1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.39:
3 * bug fix: Name conflicts between symbols passed as arguments to a
4 single call to IMPORT no longer add multiple symbols with the same name
5 to the package (detectable via DO-SYMBOLS).
6 * bug fix: support building without the dlshim on darwin x86 and x86-64
9 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
10 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
12 * bug fix: linkage-table entries on PPC now no longer overflow their
13 space allocation (potentially causing crashes if they are written out
15 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
16 platforms, preventing the GC from seeing stale pointers on the control
17 stack in subsequent GCs (which would, and does, break invariants).
18 * bug fix: 32-bit unicode external formats now work on big-endian systems.
19 * bug fix: Literal characters with code points greater than about 32767
20 now work on PPC UNICODE builds.
21 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
22 high order bits are explicitly cleared out. In some contrived situations,
23 this could lead to wrong results in mixed real/complex float arithmetic.
24 * bug fix: Fix function/macro redefinition warnings when building with
25 clisp. (lp#576787, thanks to Josh Elsasser)
26 * new platform: experimental support for ppc/openbsd (thanks to Josh
28 * bug fix: Floating-point traps now work on ppc/linux.
30 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
31 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
32 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
33 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
34 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
35 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
37 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
38 contain additional data structures and tools for concurrent programming;
39 at the moment it contains a lock-free queue, and a lock-free mailbox
41 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
42 GET-MUTEX but takes &key rather than &optional parameters. Also added
43 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
45 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
46 SB-THREAD:WAIT-ON-SEMAPHORE.
47 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
49 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
50 conditions to defer the deadline for forever.
51 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
53 * enhancement: errors from NO-APPLICABLE-METHOD and
54 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
55 generic function call.
56 * enhancement: SB-BSD-SOCKET improvements
57 ** sockets and socket streams now have a more informative printed
58 representation based on the corresponding SOCKET-NAME and
60 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
62 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
63 CL:CLOSE when appropriate, and no longer disassociates the stream
64 from the socket if close failed. (lp#543951)
65 * improvements to the instrumenting profiler
66 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
67 ** optimization: counters no longer use locks for the overflow mode.
68 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
69 incurred an off-by-one miscount.
70 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
71 * enhancement: improved DEFMETHOD pretty-printing.
72 * enhancement: perform range reduction when arguments are too large for
73 x87's transcendentals (instead of returning 0). (lp#327192)
74 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
75 some of CL-PPCRE's macros. (lp#570079)
76 * enhancement: our machine code is slightly less hostile to valgrind on
78 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
79 to Robert Swindells and Aleksej Saushev)
80 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
81 * bug fix: a rare case of startup-time page table corruption.
82 * bug fix: a semaphore with multiple waiters and some of them unwinding due
83 to timeouts could be left in an inconsistent state.
84 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
85 * bug fix: misoptimization of multiplication by one in
86 (SB-C::FLOAT-ACCURACY 0) policies.
87 * bug fix: miscounts in SB-PROFILE.
88 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
89 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
90 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
91 up itself" (March 2010) for further details.
92 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
93 against length of the list if the element is found before the specified
94 END is reached. (thanks to Alec Berryman, lp#554385)
95 * bug fix: errors signalled during package graph modification no longer
96 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
97 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
98 :SB-DOC feature. (lp#552564)
99 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
100 * bug fix: more robust runtime executable path detection. (lp#375549)
101 * bug fix: GCD always returns positive values. (lp#413680)
102 * bug fix: Converting division to multiplication by reciprocal handles
104 * bug fix: We were too eager in eliding range reduction tests on x87.
105 The maximal magnitude is 2^63, not 2^64.
106 * bug fix: Transforms for TRUNCATE don't die when the result is completely
108 * bug fix: Maybe restore buildability on Alpha.
109 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
111 * bug fix: RANDOM-STATE can be printed readably again.
112 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
113 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
114 types) could result in type mismatches during compilation.
116 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
117 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
118 stack frame thrown from.
119 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
120 compiler optimization qualities inside dynamic extent of its body.
121 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
122 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
124 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
125 constraint propgation, allowing better compilation eg. when used to
126 access structures with WITH-SLOTS. (lp#520366)
127 * optimization: the compiler is now more aware of the type of the underlying
128 storage vector for multidimensional simple arrays resulting in better code
129 for accessing such arrays.
130 * optimization: passing NIL as the environment argument to TYPEP no longer
131 inhibits optimizing it. (lp#309788)
132 * optimization: more efficient register usage when handling single-float
133 arguments on x86-64. (thanks to Lutz Euler)
134 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
135 pre-allocated temporary vectors. (lp#496249)
136 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
137 in :INITIAL-CONTENTS. (lp#523612)
138 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
139 functions. (lp#524707)
140 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
141 WITH-SLOTS usages during compilation.
142 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
143 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
144 all x86oid platforms with :UD2-BREAKPOINTS target feature.
145 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
146 instruction (tested on x86oid linux with ud2-breakpoints).
147 * bug fix: slam.sh now works on win32.
148 * bug fix: better differences of numeric types. (lp#309124)
149 * bug fix: arrays declared intersection and union types can have their
150 upgraded element type derived. (lp#316078)
151 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
152 threads started during profiling. (lp#472499)
153 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
155 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
156 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
157 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
158 values instead of signaling an error. (lp#309093)
159 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
161 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
162 declarations (lp#497321)
163 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
164 and failed to detect circular lists (lp#452008)
165 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
167 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
168 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
169 due to it, so that handlers can run.
170 * bug fix: reparsing undefined types if they have become defined since
172 * bug fix: missing &REST type in a proclamation for a function with both
173 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
174 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
175 expanded calls (lp#542174)
176 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
177 than just at toplevel form.
179 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
180 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
181 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
182 but work on type specifiers.
183 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
184 to name a type specifier.
185 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
186 specifier is valid where "valid" basically means "would be accepted as
187 second argument of TYPEP".
188 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
189 returns the function's declared, or derived FTYPE.
190 * new feature: SB-POSIX now supports accessing the d_ino member of
191 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
192 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
193 provide for seeding a RANDOM-STATE object with user-provided data or
194 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
195 attempt to initialize the returned state from the operating system's
196 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
197 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
198 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
199 * bug fix: Fix grammar and style issues for the docstrings of
200 printer-related variables and functions. (Thanks to mon_key; launchpad
202 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
204 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
205 in a row even though a handler defered the deadline long into the
207 * bug fix: A deadline handler was run without interrupts enabled for a
208 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
209 in infinitely spinning, non-killable threads.
210 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
211 before reaching the erring stack frame.
212 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
213 real power. (launchpad bug lp#525949)
214 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
215 GENCGC platforms. (launchpad bug lp#529014)
216 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
217 (launchpad bug lp#525916)
218 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
219 (Thanks to Robert Goldman)
221 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
222 * optimization: ROUND with a single single-float or double-float argument
223 is properly inlined when possible.
224 * optimization: Slightly better code is generated for integer<->float
225 conversions and for single-float<->double-float conversions on x86-64.
226 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
227 code for 32-bit and 64-bit rotations on x86-64.
228 * bug fix: The install script changes the ownership of directories as well
229 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
230 launchpad bug lp#508485)
231 * bug fix: TRUNCATE with a single single-float or double-float argument is
232 properly inlined when possible. (launchpad bug lp#489388)
233 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
234 no longer causes a compiler error on x86 and ppc.
235 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
236 always relative to *READTABLE* rather than the passed argument.
238 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
239 * minor incompatible change: threading support is now enabled by default
241 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
243 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
244 are now caught and reported just like errors during macroexpansion.
245 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
246 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
247 * enhancement: ASDF systems can now depends on SB-QUEUE.
248 * fixes and improvements related to Unicode and external formats:
249 ** bug fix: error handling and restart usage in the ucs-2 external format
251 ** there is now an implementation of the ucs-4 external format.
252 ** the utf-16 and utf-32 external formats are supported.
253 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
254 in the environment. setenv() and unsetenv() are also provided. (reported by
255 Fare Rideau; launchpad bug lp#460455)
256 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
257 loading. This ensures sensible errors for .FASL files from other
258 implementations on case-insensitive filesystems. (reported by Willem
259 Broekema; launchpad bug lp#489417)
260 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
261 Willem Broekema; launchpad bug lp#489698).
262 * bug fix: some minor code rearrangements to reenable warning-free building
263 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
264 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
266 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
269 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
270 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
271 * improvement: support O_LARGEFILE access to files larger than 2GB on
272 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
273 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
274 definitions for methods specializing on the passed class itself.
275 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
276 definitions for methods specializing on the passed class itself, or on
278 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
279 about itself during the build (e.g. for M-? in Slime), if this flag is
280 enabled in customize-target-features.lisp. This will increase the core
281 size by about 5-6mb, though, so it's mostly interesting to SBCL
283 * new feature: various GENCGC tuning parameters have been experimentally
284 documented and exported from SB-EXT. See documentation for details.
285 * fixes and improvements related to Unicode and external formats:
286 ** the Unicode character database has been upgraded to the
287 Unicode 5.2 standard, giving names and properties to a number of new
288 characters, and providing a few extra characters with case
290 ** improvement: restarts for providing replacement input/output on coding
291 errors for fd-stream external formats.
292 ** improvement: where :<encoding> is a keyword corresponding to an
293 external format the system supports, it is now possible to specify
294 (:<encoding> :replacement <character>) as an external format which will
295 automatically substitute <character> on encoding or decoding errors for
296 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
298 ** improvement: the file streams underlying the standard streams (such as
299 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
300 which uses the replacement mechanism to handle encoding errors,
301 preventing various infinite error chains and unrecoverable I/O
303 ** minor incompatible change: the utf-8 external format now correctly
304 refuses to encode Lisp characters in the surrogate range (char-codes
305 between #xd800 and #xdfff).
306 ** fix a typo preventing conversion of strings into octet vectors
307 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
309 ** fix a bug in the octet multibyte handling of decoding errors and the
310 USE-VALUE restart. (launchpad bug lp#314939)
311 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
312 restart on fd-stream decoding errors.
313 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
314 error is near the end of file.
315 ** fix a double-error case in unibyte octet conversions, when the first
316 use of USE-VALUE is ignored.
317 ** fix bugs in handling of undefined code points in unibyte encodings.
318 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
319 streams after an UNREAD-CHAR.
320 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
321 object is allocated in a boxed region of dynamic space.
322 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
323 fork with multiple Lisp threads running is made, instead of going
324 ahead with unpredictable consequences. (reported by Leslie Polzer)
325 * bug fix: uses of slot accessors on specialized method parameters within
326 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
327 error while finalizing the class. This fix may cause classes with slot
328 accessors to be finalized later than previously. (reported by Lars Rune
329 Nøstdal; launchpad bug lp#473699)
330 * bug fix: restore buildability on the MIPS platform. (regression from
331 1.0.30.38, reported by Samium Gromoff)
332 * bug fix: inspecting closures is less likely to fail with a type error.
333 * bug fix: no timer starvation when setting the system clock back.
334 (launchpad bug lp#460283)
335 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
336 standard pprint dispatch table as specified by CLHS.
337 * bug fix: give CLISP a hint about a type declaration to enable it to build
338 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
340 * bug fix: correctly dump literal objects in defaulting forms of arglists.
341 (reported by Attila Lendvai; launchpad bug lp#310132)
342 * bug fix: distinguish in type specifiers between arrays that might be
343 complex and arrays that are definitely complex. (launchpad bug lp#309129)
344 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
345 type. (reported by Levente Mészáros; launchpad bug lp#485972)
346 * bug fix: setting the value of a symbol-macro within a method in the
347 presence of type declarations works properly again. (reported by Iban
348 Hatchondo; launchpad bug lp#485019)
350 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
351 * optimization: faster FIND and POSITION on strings of unknown element type
352 in high SPEED policies. (thanks to Karol Swietlicki)
353 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
355 * improvement: better error signalling for bogus parameter specializer names
356 in DEFMETHOD forms (reported by Pluijzer)
357 * bug fix: DELETE-FILE once again works on logical pathnames (regression
359 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
361 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
362 removes previous default initargs (reported by Lars Rune Nøstdal and
364 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
365 lambda-lists. (reported by Peter Seibel)
366 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
367 correctly when starting from an executable core without saved runtime
368 options (reported by Faré Rideau, thanks to Zach Beane)
369 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
370 an optimization note instead. (reported by Martin Cracauer)
371 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
372 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
373 new process group if it doesn't need to share stdin with the sbcl
374 process. (thanks to Leslie Polzer)
375 * bug fix: SATISFIES could be misoptimized to refer to a local function.
376 (reported by Stanislaw Halik)
378 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
379 * improvement: stack allocation is should now be possible in all nested
380 inlining cases: failure to stack allocate when equivalent code is manually
381 open coded is now considered a bug.
382 * improvements related to Unicode:
383 ** the Unicode character database has been upgraded to the
384 Unicode 5.1 standard, giving names and properties to a number of new
385 characters, and providing a few extra characters with case
387 ** the system now recognizes and produces names for Unicode Hangul
389 ** the EBCDIC-US external-format is now supported for octet operations
390 (as well as for stream operations).
391 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
392 be used to output toplevel compile-time effects into a separate .CFASL
394 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
395 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
397 * optimization: TRUNCATE on known single- and double-floats is upto 25%
399 * optimization: division of floating point numbers by constants uses
400 multiplication by reciprocal when an exact reciprocal exists.
401 * optimization: multiplication of single- and double-floats floats by
402 constant two has been optimized.
403 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
404 sufficient type information is available. (thanks to Leslie Polzer)
405 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
406 known structure objects are as efficient as defstruct generated accessors.
407 * optimization: unused vector creation can now be optimized away.
408 * improvement: ASDF systems can now depends on SB-INTROSPECT.
409 * improvement: a STYLE-WARNING is signalled when a generic function
410 clobbers an earlier FTYPE proclamation.
411 * improvement: the compiler is able to track the effective type of
412 generic function across method addition and removal even in the
413 absence of an explicit DEFGENERIC.
414 * improvement: DESCRIBE now reports on symbols naming undefined
415 but assumed or declared function as well.
416 * improvement: recompilation of systems using SB-GROVEL now works
417 (thanks to Leslie Polzer)
418 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
419 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
421 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
422 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
423 well as user defined declaration names.
424 ** VARIABLE-INFORMATION is now aware of alien variables.
425 * improvement: improved address space layout on OpenBSD (thanks to Josh
427 * improvement: pretty-printing of various Lisp forms has been improved
428 (thanks to Tobias Rittweiler)
429 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
430 unused were deleted in safe code. (reported by John Fremlin)
431 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
433 * bug fix: some out-of-line array predicates were missing (reported by
435 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
437 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
438 (thanks to Larry D'Anna)
439 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
440 as well. (reported by Josh Elsasser)
441 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
442 leading to possible attempts to delete the same file twice. See docstring
443 on DELETE-FILE for details. (reported by John Fremlin)
444 * bug fix: DELETE-FILE once again deletes the file named by the pathname
445 designator argument, rather than its truename. (reported by Luis
447 * bug fix: the low-level debugger had 32-bit assumptions and was missing
448 information about some array types. (thanks to Luis Oliveira)
449 * bug fix: moderately complex combinations of inline expansions could
450 be miscompiled if the result was declared to be dynamic extent.
451 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
452 form (+ <variable> <integer>) were miscompiled under certain
454 * bug fix: in some cases no compiler note about failure to stack allocate
455 was emitted, even if the objects were in fact heap allocated.
456 * bug fix: minor violation of "otherwise inaccessible" rule for stack
457 allocation could cause objects users might reasonably expect to
458 be heap allocated to be stack allocated.
459 * bug fix: DESCRIBE signalled an error for generic functions under
460 certain circumstances. (thanks to Leslie Polzer)
461 * bug fix: Fixed spelling of an error message.
463 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
464 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
465 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
466 of SB-THREAD:THREAD-ERROR-THREAD.
467 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
468 * new feature: docstrings for local and anonymous functions are no longer
469 discarded. (thanks to Leslie Polzer)
470 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
471 values in other threads.
472 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
473 about object allocation.
474 * optimization: division of a real float by a complex float is implemented
475 with a specialised code sequence.
476 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
477 keywords is an order of magnitude faster.
478 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
479 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
480 methods, and similarly for non-standard metaclass classes as long as there
481 are no methods additional on MAKE-INSTANCE.
482 * optimization: more efficient type-checks for FIXNUMs when the value
483 is known to be a signed word on x86 and x86-64.
484 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
485 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
487 * optimization: compiler is smarter about delegating argument type checks to
489 * optimization: several character functions are now compiled somewhat more
490 efficiently. (reported by Lynn Quam)
491 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
492 * improvement: less unsafe constant folding in floating point arithmetic,
493 especially for mixed complex/real -float operations.
494 * optimization: constant double and single floats are stored in native
495 unboxed format on x86[-64].
496 * optimization: smarter code for arithmetic operations with constant floats,
497 complex floats, or integers on x86[-64].
498 * optimization: smarter code for conjugate/multiplication of float complexes
499 and abs/negate of floats on x86-64.
500 * optimization: more efficient complex float and real float operations on
502 * improvement: complex float division is slightly more stable.
503 * improvement: DESCRIBE output has been reworked to be easier to read and
504 contains more pertinent information.
505 * improvement: failure to provide requested stack allocation compiler notes
506 provided in all cases (requested stack allocation not happening without a
507 note being issued is now considered a bug.)
508 * bug fix: SB-POSIX exports the documented types and functions
509 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
510 types. (reported by "abhi")
511 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
512 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
513 (thanks to Paul Khuong)
514 * bug fix: looping around HANDLER-CASE could silently consume stack space
515 on each iteration. (reported by "foobar")
516 * bug fix: better error signalling when calls to functions seeking elements
517 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
518 (reported by Tobias Rittweiler)
519 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
520 directory components now works as it used to. (various prolems reported by
521 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
522 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
523 (reported by Elliot Slaughter, thanks to Stas Boukarev)
524 * bug fix: bogus undefined variable warnings from fopcompiled references to
525 global variables. (thanks to Lars Rune Nøstdal)
526 * bug fix: foreign function names should now appear in backtraces on
527 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
528 * bug fix: SETF compiler macro documentation strings are not discarded
530 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
531 (thanks to Alex Plotnick)
532 * bug fix: SLEEP accepts large integer arguments, truncating them to
533 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
534 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
535 * bug fix: compiler notes for expensive slot type checks could be emitted
536 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
538 changes in sbcl-1.0.29 relative to 1.0.28:
539 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
540 https://bugs.launchpad.net/sbcl
541 Bugs can be reported directly there, or by sending email to
542 sbcl-bugs@lists.sourceforge.net
543 (no subscription required.)
544 * minor incompatible change: under weak type checking policy integer
545 types are weakened less aggressively.
546 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
547 allowed to return, which causes SBCL to quit with exit status 0. Previously
548 if the function returned with a small integer return value, that value
549 was accidentally reused as the exit status.
550 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
551 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
552 :HASH-FUNCTION argument. Refer to user manual for details.
553 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
555 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
556 microseconds since the Unix epoch on all platforms.
557 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
558 allows the compiler to safely elide boundedness checks for special
560 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
561 the symbol, prohibits both lexical and dynamic binding. This is mainly an
562 efficiency measure for threaded platforms, but also valueable in
564 * new feature: UNC pathnames are now understood by the system on Windows.
565 * optimization: the compiler uses a specialized version of FILL when the
566 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
568 * optimization: accesses to potentially non-simple arrays where element type
569 is known are 50% faster.
570 * optimization: compiler now generates faster array typechecking code.
571 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
573 * optimization: multidimensional array accesses in the absence of type
574 information regarding array rank are approximately 10% faster due to
575 open coding of ARRAY-RANK.
576 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
577 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
579 * optimization: result of call to VECTOR can now be stack allocated.
580 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
581 as long as the resulting array is one-dimensional and has a known
582 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
583 length of the list matches the known length of the vector does not
584 allocate the list as an intermediate step. Ditto for VECTOR and simple
586 * optimization: MAKE-ARRAY can now stack allocate in the presence of
587 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
588 known element type, and is known to be simple and one dimensional.
589 * improvement: SBCL now emits a compiler note where stack allocation was
590 requested but could not be provided (not in all cases, unfortunately)
591 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
592 * improvement: pretty-printing loop has been implemented properly. (thanks
593 to Tobias Rittweiler)
594 * documentation: CLOS slot typechecing policy has been documented.
595 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
596 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
597 pointer, leading to memory faults. (thanks to Bart Botta)
598 * bug fix: better floating point exception handling on x86/OpenBSD.
599 (thanks to Josh Elsasser)
600 * bug fix: exit status from QUIT when called under --script was lost
601 (reported by Hubert Kauker)
602 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
603 same implementation of FILL to initialize the array, even if a more
604 efficient one was available (reported by Stas Boukarev, thanks to
606 * bug fix: potential miscompilation of array stack allocation on x86 and
607 x86-64. (reported by Time Tossavainen)
608 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
609 result in their subforms being treated as top level forms. (reported by
611 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
612 than a machine register could leave garbage in the high bits of the
613 result register (bug 316325).
614 * bug fix: disable address space randomization Linux/x86-64 as well,
615 not just x86-64. (reported by Ken Olum)
616 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
617 generate incorrect code.
618 * bug fix: #201; type inference for CONS and ARRAY types could derive
619 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
620 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
621 could not be assigned to or bound with PROGV. (reported by Lorenz
623 * bug fix: the value of CL:- in the inspector was the previous expression
624 evaluated rather than the expression being evaluated.
625 * bug fix: constants can no longer be locally declared special.
626 * bug fix: signals delivered to threads started from foreign land (read:
627 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
628 thread by blocking all signals and resignalling.
629 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
630 from :INITFORM, if any.
632 changes in sbcl-1.0.28 relative to 1.0.27:
633 * a number of bugs in cross-compilation have been fixed, with the ultimate
634 result that building under (at least) clisp should be much more reliable.
635 * minor incompatible changes: echo-streams now propagate unread-char to the
636 underlying input stream, and no longer permit unreading more than one
638 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
639 frames, allowing for instance more reliable backtraces.
640 * improvement: the debugger REPL can now reference lexical variables
641 by name directly for code compiled with (DEBUG 3).
642 * improvement: errors from malformed declarations now have better source
643 paths associated with them. (thanks to Tobias Rittweiler)
644 * optimization: faster local calls on x86/x86-64
645 * bug fix: some error messages for out-of-bound array indexes confused the
646 index and the bound. (thanks to Stas Boukarev)
647 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
649 * bug fix: running regressions tests in shells without OSTYPE set now works.
650 (reported by Harald Hanche-Olsen)
651 * bug fix: more robust static space exhaustion signalling from
652 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
653 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
654 docstring away instead of storing it under names such as (LAMBDA (X)).
655 (reported by Leslie Polzer)
656 * bug fix: timers could go off in the wrong order, be delayed indefinitely
657 (thanks to Ole Arndt for the patch)
658 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
659 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
660 potentially-invalid effective methods in its cache.
661 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
662 instances as well (thanks to Paul Khuong)
663 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
664 SB-POSIX:WAITPID and their C equivalents.
665 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
667 changes in sbcl-1.0.27 relative to 1.0.26:
668 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
669 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
670 * improvement: the system either recovers from stack exhaustion or dies
671 properly as opposed to leaving the user uncertain of whether the handler
672 trampled on some random memory next to the stack or having to rely on
673 --lose-on-corruption (which is still a good idea to use in production
674 because stack exhaustion can happen in signal handlers which will likely
676 * bug fix: fix gc related interrupt handling bug on ppc (regression from
677 1.0.25.37, reported by Harald Hanche-Olsen)
678 * bug fix: work around signal delivery bug in darwin (regression from
679 1.0.25.44, reported by Sidney Markowitz)
680 * bug fix: fix ERROR leaking memory (reported by David Thompson)
682 changes in sbcl-1.0.26 relative to 1.0.25:
683 * incompatible change: an interruption (be it a function passed to
684 INTERRUPT-THREAD or a timer function) runs in an environment where
685 interrupts can be enabled. The interruption can use
686 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
687 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
688 potentially running out of stack. Keep in mind that in the absence
689 of WITHOUT-INTERRUPTS some potentially blocking operation such as
690 acquiring a lock can enable interrupts.
691 * incompatible change: GC-OFF and GC-ON are removed, as they were
692 always unsafe. Use WITHOUT-GCING instead.
693 * new feature: runtime option --disable-ldb
694 * new feature: runtime option --lose-on-corruption to die at the
695 slightest hint of possibly non-recoverable errors: running out of
696 memory, stack, alien stack, binding stack, encountering a memory
697 fault, etc. In the absence of --lose-on-corruption a warning is
699 * enhancement: detect binding stack exhaustion
700 * enhancement: detect alien stack exhaustion on x86/x86-64
701 * improvement: generally more stable and reliable interrupt handling
702 * improvement: there is a per thread interruption queue,
703 interruptions are executed in order of arrival
704 * improvement: a repeating timer reschedules itself when the it has
705 finished, but expiration times are spaced equally. If an
706 expiration time is in the past it will trigger after a short grace
707 period that may give a chance to other things to run.
708 * optimization: slightly faster gc on multithreaded builds
709 * optimization: faster WITHOUT-GCING
710 * bug fix: when JOIN-THREAD signals an error, do it when not holding
711 important locks so that the debugger/handler doesn't produce
712 recursive errors or deadlock.
713 * bug fix: real-time signals are not used anymore, so no more
714 hanging when the system wide real-time signal queue gets full.
715 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
717 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
718 * bug fix: fix random memory faults related to interrupts on alpha
719 * bug fix: fix random memory faults related to interrupts on sparc
720 * bug fix: fix deadlocks related to starting threads
721 * bug fix: fix deadlines on locks on futex platforms
722 * bug fix: restore errno in signal handlers
723 * bug fix: fix deadlocks related to hash tables
724 * bug fix: fix deadlocks in pcl
726 changes in sbcl-1.0.25 relative to 1.0.24:
727 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
728 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
729 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
730 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
731 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
732 better name and does not return values so stale on multiprocessor systems.
733 Also, HOLDING-MUTEX-P was added for about the only sane usage of
735 * improvement: unithread builds keep track of MUTEX-VALUE.
736 * improvement: reading from a TWO-WAY-STREAM does not touch the output
737 stream anymore making it thread safe to have a concurrent reader and
738 a writer, for instance, in a pipe.
739 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
740 arguments, making compiler-macros for SETF-functions able to inspect
741 their constant arguments.
742 * improvement: COMPILE-FILE reports times with millisecond accuracy
743 (thanks to Luis Oliveira)
744 * optimization: CHAR-CODE type derivation has been improved, making
745 TYPEP elimination on subtypes of CHARACTER work better. (reported
746 by Tobias Rittweiler, patch by Paul Khuong)
747 * bug fix: setting alien structure fields of type struct by value now
748 computes the right offset for the memory copy.
749 * bug fix: compilation problem involving inlined calls to aliens with
750 result type VOID. (reported by Ken Olum)
751 * bug fix: #235a; sequential inline expasion in different policies no
752 longer reuses the functional from the previous expansion site.
753 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
754 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
755 * bug fix: named ENUMs in multiply-referenced alien record types no longer
756 cause an implied type redefinition. Regression from 1.0.21.29.
757 * bug fix: sign-extension of small signed return values now works with C
758 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
759 * improvements to the Windows port:
760 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
761 Westfold, thanks to Rudi Schlatte)
763 changes in sbcl-1.0.24 relative to 1.0.23:
764 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
765 vector of a multidimensional SIMPLE-ARRAY.
766 * new feature: the system now signals a continuable error if standard
767 readtable modification is attempted. (thanks to Tobias Rittweiler)
768 * new feature: DIRECTORY has been extended with a non-standard keyword
769 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
770 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
771 has been robustified and documented better. (thanks to Robert Goldman)
772 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
773 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
774 * tradeoff: constant FORMAT control strings are now compiled unless
775 SPACE > SPEED (previously only when SPEED > SPACE.)
776 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
778 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
780 * bug fix: lexical type declarations are now correctly reported by
781 SB-CLTL2. (reported by Larry D'Anna)
782 * bug fix: STRING-TO-OCTETS did not handle :START properly when
783 using UTF-8 as external format. (thanks to Luis Oliveira)
784 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
785 are signalled correctly. (thanks to Stas Boukarev)
786 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
787 designator. (thanks to Tobias Rittweiler)
788 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
789 designator, and returns T instead of the function. (thanks to
791 * bug fix: direct superclasses of STANDARD-CLASS and
792 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
793 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
794 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
795 when no class with the named slot yet exists no longer causes a
796 compile-time style-warning.
797 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
798 in safe code. (reported by Didier Verna)
799 * bug fix: #430; nested structure constructors can stack allocate.
800 * bug fix: on some 64-bit platforms dynamic space size was truncated
801 to #xffff0000 bytes. (reported by Benjamin Lambert)
802 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
803 REPL unusable. (reported by Daniel Herring)
804 * bug fix: return values of READ-SEQUENCE did not take :START into
805 account on file streams, regressions since 1.0.12.22. (reported by
806 Thomas Russ, patch by Paul Khuong)
807 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
808 method specializer used to confuse permuation vector optimization.
809 * bug fix: system inserted bogus implicit type declarations for local
810 special variables in DEFMETHOD bodies.
811 * bug fix: #354; duplicated frames in backtraces due to
812 non-tail-call-optimized XEPs to functions with return type NIL
814 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
815 initializes structure object slots according to DEFSTRUCT initforms,
816 and DEFSTRUCT forms :INCLUDEind structure classes defined using
817 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
818 (reported by Bruno Haible and Stephen Wilson)
819 * bug fix: #395; fill-pointer output streams used now support
820 element-type BASE-CHAR as well.
821 * bug fix: compiler error when attempting to derive return value of
822 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
824 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
826 * bug fix: Mac OS X binaries should now be portable between Leopard
829 changes in sbcl-1.0.23 relative to 1.0.22:
830 * enhancement: when disassembling method functions, disassembly
831 for the associated fast function is also produced.
832 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
834 * optimization: printing with *PRINT-PRETTY* true is now more
835 efficient as long as the object being printed doesn't require
836 special handling by the pretty printer.
837 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
838 now interact correctly with type declarations.
839 * partial bug fix: PCL detects infinite recursion during wrapper
840 validation. (thanks to Attila Lendvai)
841 * bug fix: #426; nested function calls are inlined properly.
842 Previously if FOO was an inline function, in calls of the form
843 (FOO (FOO ...)) the outer call was not inlined.
844 * bug fix: long long arguments passed in registers to alien
845 functions on PowerPC Linux and NetBSD are now handled correctly
846 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
848 changes in sbcl-1.0.22 relative to 1.0.21:
849 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
850 for the shared object in the current directory, but passes the native
851 namestring of the designated pathname to the operation system's shared
852 object loading function as-it.
853 * minor incompatible change: --disable-debugger toplevel option now takes
854 effect before processing of initialization files and --eval or --load
856 * new feature: new commandline argument: --script, which supports
857 shebang lines. See documentation for details. (based on work by
859 * new feature: SAVE-LISP-AND-DIE can save current values of
860 --dynamic-space-size and --control-stack-size in the executable core,
861 causing it to skip normal runtime option processing. See documentation
862 for details. (thanks to Zach Beane)
863 * enhancement: inoccous calls to EVAL or generic functions dispatching
864 on subclasses of eg. STREAM no longer cause compiler notes to appear.
865 * enhancement: the system no longer resignals errors from --load and
866 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
867 associated with the original error to be lost. (thanks to Ariel
869 * enhancement: :DONT-SAVE keyword argument has been added to
870 LOAD-SHARED-OBJECT for controlling interaction with
871 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
872 the effects of an earlier LOAD-SHARED-OBJECT call.
873 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
874 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
875 provided. (reported by Cedric St-Jean)
876 * bug fix: circularity handling in the reader did not treat raw
877 structure slots correctly. (reported by Cedric St-Jean)
878 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
879 file descriptors when there were none.
880 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
881 was broken. (reporteed by Willem Broekema)
882 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
883 pathnames without a directory.
884 * bug fix: COMPILE-FILE did not warn about undefined variable
885 references at toplevel, and LOAD of the resulting fasl did
887 * bug fix: functions with non-required arguments used to end up with
888 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
889 * bug fix: redefining a function with non-required arguments didn't
890 update the system's knowledge about its call signature properly.
891 * bug fix: fixed #431; incompatible alien record type redefinitions
892 are detected and handled. (reported by Neil Haven)
893 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
894 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
896 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
897 after alien stack frames.
898 * bug fix: strings passed to mk{s,d}temp lacked null termination
900 changes in sbcl-1.0.21 relative to 1.0.20:
901 * new feature: the compiler is able to track the effective type of a
902 generic function across method addition and removal.
903 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
904 appropriately typed structure slots without locking.
905 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
906 information like those gathered by TIME using a programming-friendly
908 * new feature: TIME reports time taken even if the form performs a
909 non-local transfer of control.
910 * enhancement: reduced conservativism on GENCGC platforms: on
911 average 45% less pages pinned (measured from SBCL self build).
912 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
913 mutate constant symbols or violate declaimed type of the symbol.
914 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
915 sleeping on the semaphore in heavily contested semaphores.
916 * bug fix: semaphores and condition variables were not interrupt
918 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
919 owned by other threads anymore.
920 * bug fix: FIND on lists called KEY outside the specified
921 subsequence. (reported by budden)
922 * bug fix: LOG doesn't use single-float intermediate results when
923 given mixed integer and double-float arguments, leading to better
924 precision. (reported by Bob Felts)
925 * bug fix: LOG with base zero returned values of inconsistent type.
927 changes in sbcl-1.0.20 relative to 1.0.19:
928 * minor incompatible change: OPTIMIZE qualities
929 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
930 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
931 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
932 * documentation: some slot access efficiency guidelines have been
933 added to the user manual.
934 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
935 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
936 as ASSOC and MEMEBER.
937 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
938 to more efficient EQ-comparison versions more often.
939 * optimization: enhanced derivation of DOLIST iteration variable type
941 * optimization: constant folding of simple (LIST ...) forms as DOLIST
943 * optimization: runtime lookup of function definitions can be
944 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
945 * optimization: compiler is able to derive the return type of
946 (AREF (THE STRING X) Y) as being CHARACTER.
947 * optimization: CLRHASH on empty hash-tables no longer does pointless
948 work. (thanks to Alec Berryman)
949 * optimization: REPLACE deftransforms don't punt when :START1 or
951 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
952 no longer emits a code deletion note. (reported by Andrew
954 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
955 functions with an odd number of &OPTIONAL arguments, a &REST
956 argument, and one or more &KEY arguments at the call site.
957 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
958 arguments appeared at call sites as well.
959 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
960 READ-LINE &co can no longer read from them afterwards. (reported
962 * bug fix: fixed #427: unused local aliens no longer cause compiler
963 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
965 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
966 alien-stack leakage. (reported by Andy Hefner)
967 * bug fix: PROGV signals an error when an attempt to violate declared
968 type of a variable or bind a constant is made.
969 * bug fix: SET signals an error when an attempt to violate declared
970 type of a variable is made.
971 * bug fix: restart computation during the execution of a restart
972 test function no longer causes infinite recursion. (reported by
974 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
975 signals an error. (thanks to Pierre Mai)
976 * bug fix: EXPORT left symbol unexported in conflict situations.
977 (thanks to Michael Weber)
978 * bug fix: correctly handle name conflicts involving CL:NIL.
979 (thanks to Michael Weber)
980 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
981 conflicts arising from USEing package with conflicting symbols
982 correctly. (thanks to Michael Weber)
984 changes in sbcl-1.0.19 relative to 1.0.18:
985 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
986 warnings that go otherwise unhandled will be muffled if they are
987 of the type that's the value of this variable.
988 * optimization: stack allocation is slightly more efficient on x86
990 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
991 where a raw slot always is initialized using the initform whose
992 type is not know sufficiently well a compile-time are now compiled
993 correctly. (reported by John Morrison)
994 * bug fix: compiler no longer makes erronous assumptions in the
995 presence of non-foldable SATISFIES types.
996 * bug fix: stack analysis missed cleanups of dynamic-extent
997 arguments in non-let-converted calls to local functions.
998 * improvements to the Windows port:
999 ** adjusted address spaces for building on both Win32 and
1000 Win64. (thanks for John Connors)
1001 * fixed some bugs revealed by Paul Dietz' test suite:
1002 ** interval arithmetic during type derivation used inexact integer
1003 to single-float coercions.
1004 ** arithmetic operations involving large integers and single
1005 floats give the same results in compiled and interpreted code.
1006 ** deriving the result type of COERCE no longer signals an error
1007 if the derived type of the second argument is a MEMBER type
1008 containing invalid type specifiers.
1009 ** ADJOIN with constant NIL as second argument works correctly.
1010 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1012 changes in sbcl-1.0.18 relative to 1.0.17:
1013 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1014 profiles only the current thread.
1015 * minor incompatible change: changes to SYMBOL-VALUE of constants
1016 defined with DEFCONSTANT now signal an error.
1017 * enhancement: SB-SPROF now has support for wallclock profiling,
1018 and is also able to profile specific threads. REPORT output
1019 has also additional sorting options.
1020 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1022 * optimization: structure allocation has been improved
1023 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1024 ** out of line constructors are ~10% faster.
1025 ** inline constructors are ~15% faster.
1026 ** inline constructors are capable of dynamic extent allocation
1027 (generally on x86 and x86-64, in some cases on other platforms
1029 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1031 * optimization: file compiler is now able to coalesce non-circular
1032 lists, non-base strings, and bit-vectors. Additionally, constants
1033 are never referenced through SYMBOL-VALUE at runtime.
1034 * optimization: code defining methods on PRINT-OBJECT (and other
1035 generic functions in the COMMON-LISP package) now loads faster.
1036 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1038 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1039 fasl is now deleted. (reported by Attila Lendvai)
1040 * bug fix: READ-LINE always returned NIL for the last line in files.
1041 (reported by Yoshinori Tahara)
1042 * bug fix: more accurate disassembly annotations of foreign function
1043 calls. (thanks to Andy Hefner)
1044 * bug fix: trimming non-simple strings and non-string string
1045 designators when the there is nothing to trim works properly.
1046 (thanks to James Knight)
1047 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1048 (thanks to Travis Cross)
1049 * fixed some bugs revealed by Paul Dietz' test suite:
1050 ** NIL is a valid function name (regression at 1.0.13.38)
1051 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1052 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1053 fill pointers properly (regression at 1.0.12.23)
1054 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1055 displacement indices properly (regression at 1.0.12.23)
1057 changes in sbcl-1.0.17 relative to 1.0.16:
1058 * temporary regression: user code can no longer allocate closure
1059 variable storage on stack, due to bug 419 without explicitly
1060 requesting it. Please consult sbcl-devel for advice if you need to
1061 use this feature in the meanwhile.
1062 * new feature: runtime argument --control-stack-size can be used to
1063 adjust thread default control stack size.
1064 * enhancement: improved TIME output
1065 ** all times are reported using the measured accuracy (milliseconds
1066 for real and GC times, microseconds for everything else.)
1067 ** processor cycle counts on x86 and x86-64.
1068 ** interpreted forms are counted for both evaluator modes.
1069 ** number of lambdas converted by the compiler is reported.
1070 ** CPU percentage report (computed from real and total run time.)
1071 ** more comprehensive run time reporting, using a condenced format
1072 ** interperted form, lambda, and page fault counts are omitted
1074 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1076 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1077 * optimization: two argument forms of LAST are upto ~10% faster
1078 in normal SPEED policies.
1079 * optimization: NCONC no longer needs to heap cons its &REST list
1080 in normal SPEED policies.
1081 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1082 to Sidney Markowitz)
1083 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1084 regression since 1.0.9.1. (thanks to Eric Marsden)
1085 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1086 since 1.0.15.36. (thanks to Paul Khuong)
1087 * bug fix: LAST when always returned the whole list when given a bignum
1088 as the second argument.
1089 * bug fix: dynamic extent allocation of nested lists and vectors
1090 could leak to otherwise accessible parts.
1091 * bug fix: invalid optimization of heap-allocated alien variable
1093 * bug fix: fasl header checking is less vulnerable to different
1094 platform word lengths.
1095 * bug fix: more correct assembler syntax for GNU binutils
1096 2.18.50.0.4 support. (thanks to Marijn Schouten)
1097 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1099 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1100 declarations) successfully. (reported by Attila Lendvai)
1102 changes in sbcl-1.0.16 relative to 1.0.15:
1103 * minor incompatible change: revert the changes to sb-posix's error
1104 signaling added in 1.0.14.
1105 * minor incompatible change: change PROBE-FILE back to returning
1106 NIL whenever we can't get a truename, as was the case before 1.0.14.
1107 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1108 inherits from ERROR instead of just CONDITION.
1109 * new feature: SB-INTROSPECT can provide source locations for instances
1110 as well. (thanks to Tobias Rittweiler)
1111 * optimization: binding special variables now generates smaller code
1112 on threaded platforms.
1113 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1114 and cases where no :TEST is given but the compiler can infer that
1115 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1116 * optimization: better LOGNOT on fixnums.
1117 * optimization: modular arithmetic for a particular requested width
1118 is implemented using a tagged representation unless a better
1119 representation is available.
1120 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1121 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1122 for wellformedness and returns a specialized vector. (reported by
1123 Francois-Rene Rideau)
1124 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1125 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1126 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1127 unscheduling timer at the same time as another timer fires.
1128 * bug fix: don't reschedule timers for dead threads.
1129 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1130 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1131 bogus errors if select() was interrupted.
1132 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1134 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1135 * enhancement: cleaner backtraces for interactive interrupts, as
1136 well as other cases where the interesting frames used to be
1137 obscured by interrupt handling frames.
1138 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1139 now supported, and tracing a whole package using (TRACE "FOO") now
1140 traces SETF-functions as well.
1141 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1142 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1143 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1144 * unreadably printed representation of hash-tables now includes
1146 * bug fix: partially fixed #188: type propagation from assignments
1147 is now more efficient.
1148 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1149 'DOUBLE-FLOAT) are not flushable.
1150 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1151 full address of the object, and none of the tag bits.
1152 * bug fix: readably printing hash-tables now respects other printer
1153 control variables. (reported by Cedric St-Jean)
1154 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1155 keyword with MAKE-HASH-TABLE.
1156 * bug fix: export SB-POSIX:MKSTEMP.
1157 * bug fix: SORT was not interrupt safe.
1158 * bug fix: XREF accounts for the last node of each basic-block as
1160 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1161 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1162 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1163 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1164 create obsolete instances in the case of redefinition or
1165 obsoletion of a superclass. (thanks to Andy Hefner)
1166 * bug fix: Support for the Alpha architecture has been revived; it had
1167 suffered somewhat from lack of maintenance since sbcl-1.0.
1168 * improvements to the Windows port:
1169 ** The system detects the codepage to use at startup, instead of
1170 using the value from the saved core. (thanks to Kei Suzuki)
1172 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1173 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1174 (see documentation for details.)
1175 * revived support for OpenBSD (contributed by Josh Elsasser)
1176 * partially fixed bug #108: ROOM no longer suffers from occasional
1177 (AVER (SAP= CURRENT END)) failures.
1178 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1179 bodies no longer cause a WARNING to be signalled. (reported by
1181 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1182 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1183 the bug in TRUNCATE.) (reported by Michael Weber)
1184 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1185 no samples. (reported by Andy Hefner)
1186 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1187 no longer appear as (NIL ...) frames in backtraces.
1188 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1189 is now actually exported from SB-EXT as documented. (reported by
1191 * bug fix: sb-aclrepl now correctly understands how to inspect
1192 single-floats on 64-bit platforms where single-floats are not boxed.
1193 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1194 yet been finalized. (reported by Levente Meszaros)
1195 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1196 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1197 SBCL-specific optimize qualities.
1199 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1200 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1201 an executable in the search path, and does so in the child
1202 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1203 been removed; it can be found in the CVS history, for somebody who
1204 needs that search behavior (see the manual).
1205 * minor incompatible change: compiler policy re. weakening type
1206 checks has changed: now type checks are weakened only if SAFETY < 2
1208 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1209 unparsing of directory pathnames as files. Analogously,
1210 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1211 filename to parse into a directory pathname.
1212 * enhancement: implicit generic function creation now signals a
1213 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1214 users can bind handlers for and muffle around calls to LOAD.
1215 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1216 to be used (using the default stream external format), and allows
1217 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1218 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1219 strings and vectors whose element-type or simplicity is not fully
1220 known at compile-time.
1221 * optimization: STRING-TRIM and related functions no longer allocate
1222 a new string when no trimming needs to be performed. These functions
1223 are also faster than before when the input string has been declared
1225 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1226 * optimization: READ-LINE is significantly faster for files containing
1228 * optimization: non-open coded uses of character comparison operators
1229 (e.g. char=) no longer cons when called with more than one parameter
1230 on platforms supporting dynamic-extent allocation.
1231 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1232 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1233 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1235 * bug fix: some sequence functions elided bounds checking when
1237 * bug fix: too liberal weakening of union-type checks when SPEED >
1239 * bug fix: more bogus fixnum declarations in ROOM implementation
1242 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1243 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1244 :SYNCHRONIZED argument, which makes the hash-table safe for
1245 concurrent accesses (but not iteration.) See also:
1246 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1247 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1248 * optimization: CONCATENATE on strings is an order of magnitude faster
1249 in code compiled with (> SPEED SPACE).
1250 * optimization: SUBSEQ is ~50% faster on lists.
1251 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1252 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1253 END is smaller then START.
1254 * bug fix: SB-PROFILE will no longer report extra consing for nested
1255 calls to profiled functions.
1256 * bug fix: ROOM implementation had bogus fixnum declarations which
1257 could cause type-errors when calling ROOM on large images.
1258 * bug fix: if file compilation is aborted, the partial fasl is now
1259 deleted, and COMPILE-FILE returns NIL as the primary value.
1260 * bug fix: number of thread safety issues relating to SBCL's internal
1261 hash-table usage have been fixed.
1262 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1263 be returned from its body when the values were being returned
1264 using unknown-values return convection and the W-P-O was wrapped
1265 inside an UNWIND-PROTECT.
1266 * bug fix: sb-posix should now compile again under Windows, enabling
1267 slime to work again.
1269 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1270 * incompatible change: hash-table accessor functions are no longer
1271 automatically protected by locks. Concurrent accesses on the same hash-table
1272 from multiple threads can give inconsistent results or even corrupt the
1273 hash-table completely. Multi-threaded applications should do their own
1274 locking at the correct granularity. In the current implementation it is
1275 still safe to have multiple readers access the same table, but it's not
1276 guaranteed that this property will be maintained in future releases.
1277 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1278 and will signal an error at runtime.
1279 * enhancement: SB-THREAD package now exports a semaphore interface.
1280 * enhancement: CONS can now stack-allocate on x86 and
1281 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1283 * enhancement: nested lists can now be stack allocated on
1284 platforms providing stack allocation support.
1285 * enhancement: dynamic-extent support has been extended to support
1286 cases where there are multiple possible sources for the stack
1288 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1289 if the mutex is uncontested on Linux.
1290 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1291 as specified by the CLHS. (thanks to Tobias Rittweiler)
1292 * bug fix: NaN comparison now works on x86-64.
1293 * bug fix: CLOSE :ABORT T on a stream with pending output now
1295 * bug fix: instances of non-standard metaclasses using standard
1296 instance structure protocol sometimes missed the slot type checks
1298 * bug fix: known functions can be inlined in high-debug code.
1300 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1301 * minor incompatible change: the MSI installer on Windows no longer
1302 associates .lisp and .fasl files with the installed SBCL.
1303 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1304 on Windows. (thanks to Luis Oliviera)
1305 * new feature: SB-CLTL2 contrib module now implements
1306 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1307 * optimization: scavenging weak pointers is now more efficient,
1308 requiring O(1) instead of O(N) per weak pointer to identify
1309 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1310 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1311 method bodies using constant slot-names when the first argument is
1312 a specializer parameter for the method.
1313 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1314 names, when the class of the instance is a direct instance
1315 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1316 as slow as the constant slot-name case.)
1317 * optimization: member type construction is now O(N) instead
1319 * optimization: UNION and NUNION are now O(N+M) for large
1320 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1322 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1323 now more readable in environments like Slime which display it.
1324 (thanks to Tobias C. Rittweiler)
1325 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1326 was able to infer the correct argument type for the object on which
1327 the CAS operation was being performed.
1328 * bug fix: copy propagation interfered with parallel assignment
1329 semantics in local calls. (reported by Paul Khuong)
1330 * bug fix: the signed modular fixnum shift compiled to wrong code on
1331 x86 and x86-64. (spotted by a slight modification to some of
1334 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1335 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1336 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1337 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1339 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1340 and generic function now print the object identity for anonymous
1341 instances. (thanks to Attila Lendvai)
1342 * enhancement: as an extension to MOP, SBCL now supports SETF of
1343 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1344 (thanks to Attila Lendvai)
1345 * enhancement: sb-cover has an alternate annotation mode which puts
1346 the form annotations at the car of the form, instead of annotating
1347 it completely. The benefit of this mode is that it shows better
1348 which forms were instrumented by the compiler.
1349 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1350 by printer control variables. (reported by Dan Corkill)
1351 * bug fix: system leaked memory when delayed output was performed by
1352 the OS in smaller chunks then expected. (thanks to David Smith)
1353 * bug fix: system leaked memory when file streams were not closed
1355 * bug fix: large objects written to slow streams that were modified
1356 after the write could end up with the modified state written to
1357 the underlying file descriptor.
1358 * bug fix: multiple threads operating in parallel on the same stream
1359 could cause buffer-overflows.
1360 * bug fix: source location information is stored correctly
1361 (broken since 1.0.6). This bug would generally show up as the
1362 Slime debugger highlighting the wrong form when the sldb-show-source
1364 * bug fix: Branch forms are again annotated as branches in the sb-cover
1366 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1367 on x86-64. (reported by Gregory Vanuxem)
1368 * bug fix: EQUALP could return wrong results for structures with raw
1369 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1370 word). (reported by Vjacheslav Fyodorov)
1371 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1374 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1375 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1376 atomic compare-and-swap operations on threaded platforms.
1377 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1378 allows assigning a global minimum value to optimization qualities
1379 (overriding proclamations and declarations).
1380 * enhancement: closed over variables can be stack-allocated on x86
1382 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1384 * optimization: slot definition lookup is now O(1). This speeds up
1385 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1386 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1387 * optimization: ASSOC and MEMBER can now be open-coded for all
1388 combinations of keyword arguments when second argument is constant
1389 and SPEED >= SPACE. In other cases a specialized version is
1391 * bug fix: using obsoleted structure instances with TYPEP and
1392 generic functions now signals a sensible error.
1393 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1394 (reported by Kristoffer Kvello)
1395 * bug fix: backtrace construction is now more careful when making
1396 lisp-objects from pointers on the stack, to avoid creating bogus
1397 objects that can be seen by the GC.
1398 * bug fix: defaulting of values in contexts expecting more than 7
1399 variables now works on x86-64. (reported by Christopher Laux)
1400 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1402 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1403 as the property-list of a symbol.
1404 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1405 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1406 situations requested, are once again file-compileable. (reported
1409 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1410 * MOP improvement: support for user-defined subclasses of
1411 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1412 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1413 the expansion of DEFMETHOD, is responsible for generating a form
1414 which creates a list of specializers when evaluated. Additional
1415 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1416 debugging and introspective support.
1417 * minor incompatible change: the (unsupported) spinlock interface
1418 has changed: free spinlock now has the value NIL, and a held spinlock
1419 has the owning thread as its value.
1420 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1421 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1423 * enhancement: name of a socket-stream is now "a socket" instead of
1424 "a constant string".
1425 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1426 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1427 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1428 for generic functions. (Thanks to Tobias C. Rittweiler)
1429 * optimization: bignum printing speed has been improved by 20-40%
1430 (depending on the bignum size.)
1431 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1433 * bug fix: the cache used by the CLOS to store precomputed effective
1434 methods, slot offsets, and constant return values is now thread and
1436 * bug fix: generic function dispatch function updating is now thread
1437 and interrupt safe (in the sense that the known issues have been
1439 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1440 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1441 * bug fix: asdf systems with dependencies to the SB-POSIX or
1442 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1443 * bug fix: interrupt safety of applicable method computation has been
1446 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1447 * new contrib: sb-cover, an experimental code coverage tool, is included
1448 as a contrib module.
1449 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1450 significantly faster.
1451 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1452 produce more efficient code on x86-64 if the compiler can determine
1453 that (+ INDEX <constant>) does not require a bounds check and FOO
1454 has an element type at least 8 bits wide.
1455 * enhancement: a new, experimental synchronous timeout facility is
1456 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1457 * enhancement: when a symbol name conflict error arises, the
1458 conflicting symbols are always printed with a package prefix.
1459 (thanks to Kevin Reid)
1460 * enhancement: stepping is now once again supported on the SPARC and
1461 MIPS platforms. (It is also now more likely to work on CheneyGC
1463 * enhancement: sb-sprof can now also track and report accurate call
1465 * bug fixes: the treatment of non-standard subclasses of
1466 SB-MOP:SPECIALIZER is more correct.
1467 * incompatible change: PURIFY no longer copies the data from the
1468 dynamic space into the static and read-only spaces on platforms
1469 that use the generational garbage collector
1470 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1472 * bug fix: GC race condition occasionally resulting in crashes with
1473 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1475 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1477 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1478 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1479 * bug fix: an asynchronous interrupt could previously leave the
1480 system running with GC inhibited.
1481 * bug fix: a DECLARE form evaluated at top-level now causes an error
1482 rather than silently (or verbosely) returning NIL.
1483 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1484 result in a error being signalled due to source form lookup errors.
1485 (reported by Peter Graves)
1487 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1488 * incompatible change: removed writer methods for host-ent-name,
1489 host-ent-addresses -- changing the values did not update the DNS
1491 * minor incompatible change: changed experimental JOIN-THREAD interface
1492 * documentation: the manual now lists reader and writer methods
1493 in class slot documentation sections. (thanks to Richard M Kreuter)
1494 * documentation: unwinding from asyncronous events has been
1495 documented as unsafe.
1496 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1497 in multithreaded application code.
1498 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1499 platforms. (thanks to James Anderson for the optimization hint)
1500 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1502 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1503 variants no longer cons.
1504 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1505 their NOT- variants no longer cons.
1506 * optimization: EQUAL hash tables no longer use SXHASH for objects
1507 of all data types, but instead use an EQL hash for types for which
1508 EQUAL is the same as EQL.
1509 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1510 are significantly faster.
1511 * optimization: new STRING-OUTPUT-STREAM implementation is much
1512 faster for large outputs and conses 30% less on average.
1513 * enhancement: XREF information is now collected for references made
1514 to global variables using SYMBOL-VALUE and a constant argument.
1515 * enhancement: SIGINT now causes a specific condition
1516 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1517 * bug fix: FILE-POSITION used to signal an error in some cases where
1518 ANSI requires it to return NIL.
1519 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1520 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1521 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1523 * bug fix: bad type declaration in the CLOS implementation has
1524 been fixed. (reported by James Anderson)
1525 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1526 (thanks to Lutz Euler)
1527 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1528 required by the CLHS. (reported by Samium Gromoff)
1529 * bug fix: dead unbound variable references now signal an error.
1530 (reported by Marco Monteiro)
1531 * bug fix: / with an unused value was being deleted in safe code.
1532 (thanks to Marco Monteiro and Kevin Reid)
1533 * bug fix: number of characters that can be written onto a single
1534 line in a file is unlimited.
1535 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1536 been fixed by inhibiting interrupts for when GC is disabled.
1537 * bug fix: some interrupt safety issues with GETHASH, (SETF
1538 GETHASH), CLRHASH and REMHASH have been fixed.
1539 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1540 specifier no longer causes infinite recursion.
1541 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1542 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1543 * bug fix: an &environment argument with the correct variable information
1544 is passed to macros that are expanded during byte compilation.
1545 (reported by Samium Gromoff)
1546 * bug fix: a logic error was causing the hash function for bignums to
1547 have excessive amounts of collisions. (reported by Faré Rideau)
1548 * bug fix: modifying the contents of an array could change the return
1549 value of SXHASH on that array, which is only allowed for strings
1550 and bit vectors. (bug introduced in 0.9.16)
1551 * improvement: the x86-64/darwin port now passes all tests (except
1552 for the debugger tests) but should still be considered
1553 experimental until this is fixed.
1554 * improvement: a style-warning is signaled for CASE (etc) clauses with
1555 duplicate keys. (thanks to Kevin Reid)
1556 * improvement: macos/x86 and macos/x86-64 now use mach exception
1557 handlers for dealing with illegal instructions (for trapping and
1558 error handling) and memory protection violations (for GC).
1560 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1561 * new platform: experimental support for x86-64/darwin (MacOS).
1562 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1563 and getnameinfo sockets functions are used instead of gethostbyaddr
1564 and gethostbyname, on platforms where the newer functions are available.
1565 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1567 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1568 don't print the startup banner, but behave as if --noinform was passed
1569 as a command line argument. (thanks to Kevin Reid)
1570 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1571 * optimization: code using alien values with undeclared types is much faster.
1572 * optimization: the compiler is now able to open code SEARCH in more cases.
1573 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1574 * bug fix: using standardized COMMON-LISP special variables as loop
1575 variables no longer signals bogus package lock violations. (reported
1577 * bug fix: declaring local loop variables to be of a range-limited type
1578 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1579 (reported by Andras Simon)
1580 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1581 bugs remain on x86-64.)
1582 * bug fix: the #= and ## reader macros now interact reasonably with
1583 funcallable instances.
1584 * bug fix: type-checks for function arguments were compiled using the
1585 compiler policy settings of the wrong lexical environment (in 1.0.2
1587 * bug fix: SHADOW accepts characters as string designators, as required
1588 by the spec (thanks to Eric Marsden)
1589 * bug fix: fixed GC safety issues when foreign functions are called with
1590 non-base strings as arguments
1591 * bug fix: more consistent error output for fatal-compiler-warnings, like
1593 * bug fix: functions with proper names were showing up as NIL in
1594 backtraces (reported by Edi Weitz, regression in 1.0.2)
1596 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1597 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1598 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1599 produce more efficient code on the x86 if the compiler can determine
1600 that (+ INDEX <constant>) does not require a bounds check and FOO
1601 has an element type at least 8 bits wide.
1602 * bug fix: references to undefined variables are handled the same way
1603 in toplevel forms as in the normal compiler
1604 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1606 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1607 (thanks to Jon Buller)
1608 * improvement: faster compilation times for complex functions
1609 * improvement: added readlink support to SB-POSIX (thanks to Richard
1612 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1613 * improvement: experimental support for mach exception handling on
1614 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1616 * improvement: support for GBK external format.
1617 (thanks to Chun Tian (binghe))
1618 * improvement: the debugger now displays variables that have been closed
1619 over, in code compiled with (DEBUG 2) or higher
1620 * improvement: support for executable cores on NetBSD (thanks to
1622 * new feature: added a RESTART-FRAME debugger command
1623 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1624 be used to provide an implementation for FILE-POSITION on Gray streams
1625 (thanks to Eric Marsden)
1626 * new feature: add syslog, openlog and closelog support to SB-POSIX
1627 (thanks to Richard Kreuter)
1628 * optimization: the function call overhead in code compiled with
1629 a high DEBUG optimization setting is significantly
1630 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1631 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1632 (thanks to Tony Martinez)
1633 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1634 evaluated once (reported by Kevin Reid)
1635 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1636 works again (thanks to Kilian Sprotte)
1637 * bug fix: an error is signaled for tagbodies with duplicate tags
1638 (thanks to Stephen Wilson)
1639 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1640 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1641 stack frames from alien callbacks.
1642 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1643 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1644 65k pages (thanks to David Woodhouse)
1645 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1647 changes in sbcl-1.0.1 relative to sbcl-1.0:
1648 * new platform: FreeBSD/x86-64, including support for threading.
1649 * new feature: the compiler stores cross-referencing information
1650 about function calls (who-calls), macroexpansion (who-macroexpands)
1651 and special variables (who-binds, who-sets, who-references) for code
1652 compiled with (< SPACE 3). This information is available through the
1653 sb-introspect contrib.
1654 * new feature: users may subclass SEQUENCE, and have instances of
1655 these classes interoperate with standard Common Lisp functions if
1656 a number of methods are defined. (This feature is experimental
1657 and the interface subject to change based on feedback from SBCL
1658 users and the general community)
1659 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1660 x86/x86-64, rather than the previous fixed depth of 8
1661 * improvement: another pthread back-end of mutex "pthread-futex".
1662 * bug fix: non-ascii command-line arguments are processed correctly
1663 (thanks to Yaroslav Kavenchuk)
1664 * bug fix: non-required arguments were not passed correctly when a method
1665 defined using DEFMETHOD was called from a mop-generated method using
1666 CALL-NEXT-METHOD (reported by Pascal Costanza)
1667 * bug fix: recursion is now permitted in accessors through
1668 SLOT-UNBOUND. (reported by Pascal Costanza)
1669 * bug fix: an error was signaled at startup if the HOME environment
1670 variable was defined, but had an empty value (reported by Peter Van Eynde)
1671 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1672 signal a PROGRAM-ERROR, not a BUG.
1673 * bug fix: SB-POSIX:READDIR works when built with large file support.
1674 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1676 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1677 for better automatic indentation support. (thanks to Matt Pillsbury)
1678 * optimization: loading generic functions no longer takes O(n^2) time,
1679 proportional to the amount of methods in the generic function
1680 (reported by Todd Sabin and Jeremy Brown)
1681 * optimization: the FIND and POSITION family of sequence functions
1682 are significantly faster on arrays whose element types have been
1684 * improvements to the Windows port:
1685 ** Intermittent heap corruption problems have been fixed. (thanks
1686 to Alastair Bridgewater)
1687 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1689 ** Lisp is able to unwind foreign exception frames from alien
1690 callbacks. (thanks to Alastair Bridgewater)
1692 changes in sbcl-1.0 relative to sbcl-0.9.18:
1693 * improvement: experimental support for threading on FreeBSD/x86.
1694 (thanks to NIIMI Satoshi)
1695 * improvement: runtime option --dynamic-space-size can be used
1696 to set the size of the dynamic space reserved on startup.
1697 * improvement: floating point modes in effect are now saved in
1698 core, and restored on startup.
1699 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1700 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1701 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1702 threads are not running after *SAVE-HOOKS* have run.
1703 * improvement: writes to CLOS instance slots are type-checked in code
1704 compiled with (SAFETY 3)
1705 * improvement: floating-point exception handling on FreeBSD (thanks to
1707 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1708 (thanks to Zach Beane)
1709 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1711 * improvement: added support for the Shift-JIS external format.
1712 (contributed by NIIMI Satoshi)
1713 * improvement: callbacks are supported on Linux/PPC. (thanks to
1715 * bug fix: compiler bug triggered by a (non-standard) VALUES
1716 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1717 * bug fix: file compiler no longer confuses validated and already
1718 dumped structurres. (reported by Kaersten Poeck)
1719 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1720 fill-pointer signals a type-error as required. (thanks to
1722 * bug fix: disassemly of funcallable instances works.
1723 * bug fix: single stepping on PPC.
1724 * bug fix: fix thread-safety problems in the type system (generally
1725 manifesting as nonsensical errors like "STRING is a bad type specifier
1726 for sequences" or "The value 1 is not of type FIXNUM")
1727 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1728 (reported by Josip Gracin)
1729 * bug fix: an error is signaled for attempts to displace arrays with
1730 incompatible element types (thanks to Mario Mommer)
1731 * bug fix: more correct handling of wide characters in debug info
1732 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1733 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1734 and don't cause extra consing
1735 * optimization: MAP and MAP-INTO are significantly faster on vectors
1736 whose elements types have been declared.
1737 * Improvements to SB-SPROF:
1738 ** Support for allocation profiling
1739 ** Reduced profiling overhead, especially for long profiling runs
1740 * Improvements to the Windows port:
1741 ** floating point exceptions are now reported correctly.
1742 ** stack exhaustion detection works partially.
1743 ** more accurate GET-INTERNAL-REAL-TIME.
1744 ** better RUN-PROGRAM behaviour in case of errors in the child
1746 ** PROBE-FILE now simplifies pathnames correctly.
1747 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1748 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1749 1st 1970 (although time timezone data will be unreliable).
1750 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1752 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1753 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1754 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1756 * bug fix: two potential GC deadlocks affecting threaded builds.
1757 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1758 returns T (reported by Anton Kazennikov)
1759 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1760 with non-variable places
1761 * bug fix: remove a race condition in the setting of
1762 funcallable-instance functions, this should make threaded CLOS
1763 code more stable against memory faults.
1764 * bug fix: corruption of specials when unbinding is interrupted by an
1765 asynchronous unwind (reported by Hannu Koivisto)
1766 * improvement: the debugger will now also display local variables that
1767 are only used once, for code compiled with a DEBUG optimization quality
1770 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1771 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1772 * incompatible change: External-format support for FFI calls. The
1773 SB-ALIEN:C-STRING no longer implies an ASCII
1774 external-format. Instead the string is subject to external-format
1775 conversion. Additionally return values of type SB-ALIEN:C-STRING
1776 are by default of type (SIMPLE-ARRAY CHARACTER), not
1777 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1778 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1779 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1780 * incompatible change: SB-EXT package no longer contains the
1781 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1782 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1784 * incompatible change: the single-stepper is no longer available
1785 on Alpha, Mips and Sparc platforms.
1786 * minor incompatible change: the direct superclasses of
1787 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1788 not (STANDARD-OBJECT FUNCTION). This makes the
1789 class-precedence-lists of GENERIC-FUNCTION and
1790 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1792 * minor incompatible change: the default stream external format on
1793 non-unicode SBCL is no longer detected from the locale, but is always
1795 * new feature: Add a version of evaluator that uses an interpreter instead
1796 of the compiler. EVAL still uses the compiler by default, to switch it
1797 to use the interpreter, set the value of the variable
1798 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1799 * minor incompatible change: the single-stepper REPL has been merged
1800 with the normal debugger (see the "Stepping" heading of the debugger help
1801 for more details). The debugger command STEP will no longer switch
1802 to the single-stepper REPL.
1803 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1804 for a type now works.
1805 * bug fix: loading of default sysinit file works. (thanks to Leonid
1807 * bug fix: better detection of circularities in the file-compiler.
1808 (reported by Marco Monteiro)
1809 * bug fix: the CL pathname functions now work with files that have
1810 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1811 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1812 systems with Unix98 pty semantics.
1813 * bug fix: ASDF-INSTALL will now work with bsd tar.
1814 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1816 * bug fix: timers expiring in dead threads no longer cause a
1817 type-error (reported by Paul "Nonny Mouse").
1818 * bug fix: thanks to more lightweight single-stepper instrumentation,
1819 code compiled with (DEBUG 3) will compile and execute significantly faster,
1820 and will have more accurate type-inferencing than before
1821 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1822 whose bindings are modified
1823 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1824 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1825 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1826 CL:SOFTWARE-VERSION with proper version
1828 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1829 * feature: implemented the READER-METHOD-CLASS and
1830 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1831 as specified by AMOP.
1832 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1834 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1835 (thanks to Lutz Euler)
1836 * optimization: hashing of general arrays and vectors has been
1837 improved. (reported by Any Fingerhut)
1838 * enhancement: SB-INTROSPECT is now able to find definitions of
1839 profiled functions. (thanks to Troels Henriksen)
1840 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1841 as well, allowing compiler-macros for SETF-functions to expand.
1842 * enhancement: step-instrumentation no longer wraps known
1843 single-value functions with multiple-value context, allowing
1844 better type inference.
1845 * fixed bug #337: use of MAKE-METHOD in method combination now works
1846 even in the presence of user-defined method classes. (reported by
1847 Bruno Haible and Pascal Costanza)
1848 * fixed bug #339(c): if there are applicable methods not part of any
1849 long-form method-combination group, call INVALID-METHOD-ERROR.
1850 (reported by Bruno Haible)
1851 * fixed bug #361: the :FUNCTION initarg in the protocol for
1852 initialization of methods can now be used to override
1853 internally-produced optimized functions. (reported by Bruno
1855 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1856 system-provided lambda expression no longer cause warnings about
1857 unbound #:|pv-table| symbols.
1858 * bug fix: improved the handling of type declarations and the
1859 detection of violations for keyword arguments with non-constant
1861 * bug fix: potentially erronous calls to PATHNAME and
1862 MERGE-PATHNAMES were being flushed in some cases.
1863 (reported by Richard Kreuter)
1864 * bug fix: compiled calls to TYPEP were mishandling obsolete
1865 instances. (reported by James Bielman and Attila Lendvai)
1866 * bug fix: format strings with ~> without matching ~< no longer
1867 trigger an AVER, but signal an understandable error instead.
1868 (reported by Antonio Martinez)
1869 * bug fix: specifying an output-file without a pathname-type for
1870 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1871 of input-file instead of "fasl". (reported by Robert Dodier)
1872 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1873 (reported by James Y Knight).
1874 * bug fix: compiler-macros-function did not consider the environment
1875 argument for shadowing by local functions.
1876 * bug fix: compiler-macros expansion was inhibited by local INLINE
1878 * bug fix: inline expansions of known functions were subject to
1879 step-instrumentation in high debug policies, leading to problems
1880 with type-inference.
1881 * bug fix: compiler failed to differentiate between different CONS
1882 types in some cases.
1883 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1884 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1885 * bug fix: #368: incorrect use of expressed vs. upgraded array
1887 * bug fix: #306a: more precise unions of array types.
1888 * thread-safety improvements:
1889 ** CONDITION-WAIT could return early on Linux, if the thread was
1890 interrupted and subsequently continued with SIGCONT.
1891 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1893 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1894 * added support for the ucs-2 external format. (contributed by Ivan
1896 * minor incompatible change: pretty printing of objects of type
1897 (cons symbol) is, in the default pprint-dispatch-table, now
1898 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1900 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1901 called later in a class's lifetime, possibly as late as when the
1902 first instance of the class is created. Previously,
1903 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1904 class became finalizeable.
1905 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1906 for multibyte external-format streams. (thanks to "vbzoli")
1907 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1908 with :ALLOCATION :CLASS inherited from superclasses of the
1910 * fixed bug: anonymous classes can now be created using the :NAME
1911 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1912 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1913 * fixed bug: core-files saved with :EXECUTABLE T can again be
1914 executed when SBCL_HOME isn't set. (reported by James Knight)
1915 * fixed bug: toplevel LOCALLY forms with declarations could
1916 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1917 * fixed bug: printing from several different threads using different
1918 values of *print-case* could cause invalid output, due to
1919 some internal special variables of the printer not being bound
1920 thread-locally (reported by Max Mikhanosha)
1921 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1922 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1923 (reported by Pascal Costanza)
1924 * fixed bug: FINALIZE-INHERITANCE is called from
1925 REINITIALIZE-INSTANCE on classes when the class has previously
1926 been finalized, as required by AMOP.
1927 * minor code generation optimizations:
1928 ** better register allocation in CLOS dispatching functions
1929 ** overflow detection when coercing signed bytes to fixnums on x86-64
1930 ** is now implemented with one IMUL instruction instead of three shifts
1931 ** more efficient bit-vector access on x86 and x86-64
1932 ** more efficient access to raw structure slots on x86 and x86-64
1933 * fixed some bugs revealed by Paul Dietz' test suite:
1934 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1935 return its argument.
1937 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1938 * feature: thread support on Solaris/x86, and experimental thread support
1940 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1942 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1943 default method for SLOT-UNBOUND.
1944 * minor incompatible change: prevent the user from specializing the
1945 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1946 somewhat counter to the intent of the protocol, I (CSR) think, and
1947 additionally it just doesn't work in SBCL as currently
1948 implemented, thanks to optimizations (that are always valid for
1949 the other three SLOT-VALUEish functions, but not for the setter).
1950 * minor incompatible change: the :SB-LDB feature is now enabled by
1951 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1952 the low-level debugger.
1953 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1954 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1955 down to an SB-SYS:FD-STREAM, allowing direct communication in
1956 more cases. Temporary files and pipes are still used as a fallback
1958 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1959 on the non-reentrant C functions localtime(3) and gmtime(3).
1960 * bug fix: global optimization policy was not visible in LOCALLY and
1962 * bug fix: class objects can be used as specializers in methods.
1963 (reported by Pascal Costanza)
1964 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1965 with a type error. (reported by blitz_ on #lisp)
1966 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1967 failed with a type error. (reported by Pascal Bourguignon)
1968 * bug fix: merging pathnames against defaults with :DIRECTORY
1969 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1970 (reported by James Y Knight)
1971 * bug fix: saving large (>2GB) cores on x86-64 now works
1972 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1973 constant index and a (simple-array (signed-byte 32)) array
1974 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1975 error (patch by Robert J. Macomber)
1976 * feature: TIME now displays the amount of run-time spent in GC
1977 * bug fix: The debugger now does a better job of respecting
1978 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1979 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1980 workaround for bug 403.)
1981 * bug fix: floating point exception handling now works on FreeBSD
1982 (thanks to NIIMI Satoshi)
1983 * fixed some bugs revealed by Paul Dietz' test suite:
1984 ** MISC.641: LET-conversion were not supposed to work in late
1986 * improvements to the Win32/x86 port:
1987 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1988 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1990 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1991 * new feature: source path information is generated for macro-expansion
1992 errors for use in IDE's like Slime (thanks to Helmut Eller)
1993 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1994 * bug fix: compiler does not loop forever on an invalid type in
1996 * improvement: compilation of most CLOS applications is significantly
1998 * optimization: added a limited bytecode compiler for simple toplevel
1999 forms, speeding up compilation and FASL loading
2000 * bug fix: the statistical profiler now properly distinguishes anonymous
2003 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2004 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2005 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2006 into subclasses of the finalized class. Now user calls to
2007 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2008 system return before any subclasses are finalized.
2009 * minor incompatible change: The reader no longer ignores errors
2010 regarding non-existent packages in #+ and #- feature tests.
2011 * new feature: command line options --no-sysinit, --no-userinit to
2012 inhibit loading the corresponding init files
2013 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2014 for sending data through UDP sockets (thanks to François-René Rideau)
2015 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2016 error is signalled instead (thanks to François-René Rideau)
2017 * minor incompatible change: Error signalling behaviour of lexical
2018 operations violating package locks has changed slightly. Refer to
2019 documentation on package locks for details.
2020 * enhancement: EVAL can process IF-expressions without resorting to the
2022 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2023 constant-folded properly due to missing out-of-line functions.
2024 (reported by Mika Pihlajamäki)
2025 * bug fix: LISTEN sometimes returned T even in cases where no data was
2026 immediately available from the stream
2027 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2028 were reversed. (reported by Levente Mészáros)
2029 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2030 when given a vector displaced to an adjustable array. (reported
2032 * bug fix: derivation of float boundaries from numbers outside the
2033 appropriate float range (reported by John Wiseman)
2034 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2036 * bug fix: precomputing cache entries for generic functions with
2037 some subclasses of specializers as yet invalid does not attempt to
2038 fill a cache line with a negative offset. (reported by Levente
2040 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2041 allow condition class objects as arguments to DOCUMENTATION and
2042 (SETF DOCUMENTATION); only find and set documentation for
2043 structure names for the STRUCTURE doc-type. (suggested by Gary
2045 * improvements to the Win32/x86 port:
2046 ** (user-homedir-pathname) and default initialization file
2047 locations now know about the user's "Documents and Settings"
2048 directory (thanks to Yaroslav Kavenchuk)
2049 ** run-program is implemented (thanks to Mike Thomas)
2050 ** sockets support (thanks to Timothy Ritchey)
2051 ** better backtrace support (thanks to Alastair Bridgewater)
2052 ** sb-grovel supported
2053 ** asdf-install and sb-posix work somewhat
2054 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2055 * improvements to the Solaris/x86 port:
2056 ** works on Solaris 11/Solaris Express
2057 ** floating-point exception handling support
2058 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2059 * fixed some bugs revealed by Paul Dietz' test suite:
2060 ** REMOVE-METHOD returns its generic function argument even when
2061 the method is not one of the generic functions' methods.
2062 ** objects declared as MEMBER types can be admissible arguments to
2063 structure accessors.
2064 ** printing characters should simply be printed by the FORMAT ~:C
2066 ** compiler failure when compiling functions with hairy constant
2067 defaults for optional parameters.
2068 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2069 function, which is already optimized.
2071 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2072 * new platform: experimental support for SBCL x86/Darwin, including
2073 MacOS X 10.4.5 on Intel.
2074 * new feature: Unicode character names are now known to the system
2075 (through CHAR-NAME and NAME-CHAR).
2076 * new feature: the filesystem location of SBCL's core file is
2077 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2078 * minor incompatible change: the contrib modules SB-POSIX and
2079 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2080 this change is to make it easier to distribute
2081 location-independent binaries.
2082 * bug fix: as implied by AMOP, standardized classes no longer have
2083 slots named by external symbols of public packages. (reported by
2085 * optimization: calling functions via constant symbols -- as in
2086 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2087 via the function object as in (FUNCALL #'FOO).
2088 * optimization: on x86 and x86-64, the calling convention for the
2089 case of dealing with an unknown number of values has been altered
2090 to be friendlier to the prediction heuristics implemented,
2091 particularly with reference to CALL and RET pairing. (thanks to
2092 Alastair Bridgewater)
2093 * optimization: on x86, the code for access to thread-local symbol
2094 values and binding/unbinding of thread-local symbols is smaller.
2095 (thanks to Alastair Bridgewater)
2096 * enhancement: CONSTANTP is now able to determine constantness of
2097 more complex forms, including calls to constant-foldable standardized
2098 functions and some special forms beyond QUOTE.
2099 * fixed bug: occasional GC crashes on Solaris/x86
2100 * optimization: x86-64 supports stack allocation of results of simple
2101 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2102 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2103 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2104 (thanks to James Knight)
2105 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2106 by the standard (thanks to Stephen Compall)
2108 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2109 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2110 be used for bundling the runtime and the core file into one
2111 executable binary. This feature is not currently supported on all SBCL
2112 platforms. (thanks to James Bielman and NIIMI Satoshi)
2113 * new feature: a generational or ephemeral garbage collector is now
2114 the default on the PowerPC platform (both Linux and Darwin). The
2115 old Cheney (stop and copy) collector is a build-time option.
2116 (thanks to Cyrus Harmon, after Raymond Toy)
2117 * minor incompatible change: the method by which SBCL finds its
2118 contributed modules has changed; it no longer relies on symbolic
2119 links from an $SBCL_HOME/systems directory, but searches directly
2120 in the subdirectories of $SBCL_HOME.
2121 * enhancement: the dynamic heap size on the Linux/PPC platform is
2122 markedly larger, even using the older Cheney garbage collector.
2123 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2124 certain complicated string types. (reported by Gary King)
2125 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2126 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2127 * fixed bug: DOCUMENTATION on structures no longer signals an
2128 error if no structure type of the right name exists. (reported by
2130 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2131 applicable non-standard primary or :AROUND method on
2132 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2133 no longer cause unbound variable errors. (reported by Kevin Reid)
2134 * fixed bug: metacircle resolution in cases where methods have slots
2135 added before the slots from STANDARD-METHOD. (reported by Jean
2137 * fixed bug: the Power PC assembly code for calling into lisp
2138 sometimes computed its return address wrongly (depending on the
2139 15th bit of the address, fixed at link time). This used to
2140 manifest itself in a segmentation violation while building PCL.
2141 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2142 many others over the years)
2143 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2144 the stack pointer (treated as a signed integer) is negative.
2145 (thanks to Peter van Eynde)
2147 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2148 * new platform: experimental support for the Windows operating
2149 system has been added. (thanks to Alastair Bridgewater)
2150 * fixed several bugs in and robustified the PPC FFI (including
2151 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2152 * bug fix: allow non-simple string symbol names (reported by Paul
2154 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2156 * bug fix: saving a core corrupted callbacks on x86/x86-64
2157 * bug fix: closed a loophole in metacircularity detection and
2158 grounding in the PCL implementation of CLOS.
2159 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2160 (reported by tomppa on #lisp)
2161 * bug fix: clear the direction flag on Lisp -> C transitions, as
2162 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2163 (reported by Andrej Grozin and Hendrik Maryns)
2164 * optimization: major improvements to GC efficiency on GENCGC platforms
2165 * optimization: faster implementation of EQUAL
2166 * optimization: emit more efficient opcodes for some common
2167 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2168 * optimization: several other minor code-generation improvements on x86-64
2169 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2171 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2172 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2173 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2174 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2175 by ANSI as a generic function, and for consistency (SETF
2176 GENERIC-FUNCTION-NAME) is treated likewise.
2177 * fixed bug #233.b: make constraint propagation notice when a variable
2178 value is changed after it is referenced but before it is used
2179 * fixed bug #296: no more arbitrary behaviour from filenames with
2180 odd characters as --load arguments. (reported by Adam Warner)
2181 * fixed bug #390: :CHARACTER-SET pathname components now work as
2182 expected. (reported by Tim Daly Jr)
2183 * fixed bug #391: complicated :TYPE intersections in slot
2184 definitions no longer cause an error in PCL internals.
2185 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2186 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2187 returning the number of octets which would be written to the
2188 file-stream. (thanks to Robert J. Macomber)
2189 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2190 arguments to the internal stream functions. (thanks to David
2192 * bug fix: stack exhaustion is now handled on the x86/SunOS
2193 platform. (thanks to Daisuke Homma)
2194 * bug fix: more accurate ROOM results on GENCGC platforms
2195 * optimization: improved type inference for arithmetic-for
2196 index variables in LOOP
2197 * optimization: faster floating-point SQRT on x86-64
2198 * fixed some bugs revealed by Paul Dietz' test suite:
2199 ** DOCUMENTATION returns NIL instead of "" for method combinations
2200 that don't have a docstring
2202 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2203 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2204 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2205 therefore are not customizeable by user code (as seems to be at
2206 least permitted and maybe required by AMOP). As a consolation,
2207 however, the SBCL implementation of these functions now calls
2208 REINITIALIZE-INSTANCE as specified by AMOP.
2209 * bug fix: slot-definition documentation is propagated as per ANSI
2210 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2211 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2212 argument, as do eslotd initialization methods. (from Pascal
2213 Costanza's "Closer" project)
2214 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2215 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2217 * bug fix: it is now possible to have more than one subclass of
2218 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2219 (reported by Bruno Haible, Pascal Costanza and others)
2220 * bug fix: the dependent update protocol now works for generic
2221 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2222 and Pascal Costanza)
2223 * bug fix: condition-class instances corresponding to
2224 DEFINE-CONDITION forms are now created eagerly. (reported by
2225 Kalle Olavi Niemitalo on comp.lang.lisp)
2226 * bug fix: floating point printing is more accurate in some
2227 circumstances. (thanks to Simon Alexander)
2228 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2229 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2230 * bug fix: callbacks on OS X now preserve stack-alignment.
2231 (thanks to Cyrus Harmon)
2232 * enhancement: the x86-64 disassembler is much better at
2233 disassembling SSE instructions. (thanks to Lutz Euler)
2234 * enhancement: CHECK-TYPE on a variable now allows type-inference
2235 (thanks to Vincent Arkesteijn)
2236 * optimization: improved performance of EUC-JP external format.
2237 (thanks to NIIMI Satoshi)
2238 * optimization: performance improvements to IO on file streams of
2239 :ELEMENT-TYPE CHARACTER
2240 * optimization: much faster memory allocation on x86-64
2241 * optimization: faster garbage collections (latency and throughput)
2243 * optimization: faster bignum subtraction and division on x86 and x86-64
2244 (thanks to Lutz Euler)
2245 * optimization: more accurate type-inference for loops that use a
2246 floating point index variable or a negative step.
2248 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2249 * bug fix: add a workaround to SBCL looping infinitely at startup on
2250 Linux kernels with apparently buggy implementations of personality().
2251 (thanks to Svein Ove Aas)
2252 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2253 (thanks to David Lichteblau)
2254 * bug fix: local bindings shadow global symbol macros for
2255 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2256 * optimization: non-open coded uses of numeric comparison operators
2257 (e.g. >) no longer cons when called with more than one parameter
2258 on platforms supporting dynamic-extent allocation.
2259 * enhancement: saving cores with foreign code loaded is now supported
2260 on MIPS/Linux in addition to the previously supported platforms.
2261 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2262 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2263 * bug fix: division by zero in sb-sprof when no samples were collected
2264 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2265 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2266 (thanks to Alexander Kjeldaas)
2267 * new feature: ignoring the return values of destructive functions
2268 like NREVERSE signals a compile-time style-warning.
2269 (thanks to Kevin Reid)
2270 * new feature: the alignment of alien structure fields can be
2271 explicitly specified. (thanks to Cyrus Harmon)
2272 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2273 and dump core on SIGQUIT
2275 ** incompatible change: threads do not inherit values of specials
2276 from their parents (see manual)
2277 ** bug fix: threads stacks belonging to dead threads are freed by the
2278 next exiting thread, no need to gc to collect thread stacks anymore
2279 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2280 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2281 ** bug fix: dynamic variable and thread start related gc lossage
2282 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2284 * fixed some bugs revealed by Paul Dietz' test suite:
2285 ** SUBTYPEP is slightly more accurate on heinously complicated
2286 CONS types where some of the members have uncertain (in the
2287 NIL, NIL sense) type relationships to each other.
2289 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2290 no longer purified unless :PURIFY T is explicitly specified.
2291 ** Non-purified cores are significantly smaller than before
2293 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2294 * new feature: timers based on Zach Beane's excellent timer package
2295 * added support for the following external formats: koi8-u,
2296 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2297 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2298 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2299 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2300 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2301 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2302 * incompatible change: a threaded SBCL will no longer revert to
2303 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2304 * bug fix: interrupts are disabled until startup is complete; no
2305 more sigsegvs when receiving a signal to soon
2306 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2308 * bug fix: add a workaround for the memory randomization features in
2309 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2310 workaround will only be in effect on systems with the proc filesystem
2312 * bug fix: printing objects of type HASH-TABLE signals a
2313 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2315 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2316 have been running for over 50 days. (reported by Gilbert Baumann)
2317 * bug fix: the logic for getting names of functions gets less
2318 confused when confronded with alternate-metaclass
2319 funcallable-instances. (reported by Cyrus Harmon)
2320 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2321 consistent, even on internal alternate-metaclass objects.
2322 * bug fix: flush closure information collected by physical
2323 environment analysis prepass before the main pass. (bug reported
2325 * bug fix: compiler pack phase does not modify a hashtable, which is
2326 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2327 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2328 may be expanded. (reported by Alexander <malishev> on c.l.l)
2329 * bug fix: no more style-warnings when compiling code using LAST
2330 under high-SPEED low-SPACE settings. (reported by David Wallin
2332 * fixed some incompatibilities between SBCL's MOP and the MOP
2334 ** the METAOBJECT class is now implemented;
2335 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2336 STANDARD-OBJECT, as required;
2337 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2338 now compatible (as required by VALIDATE-SUPERCLASS); there
2339 remains a consistency requirement over the presence or absence
2340 of the FUNCTION class in the superclass list of finalized
2341 classes; see the manual for more details;
2342 ** the :AROUND method for COMPUTE-SLOTS on
2343 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2344 requested slot ordering.
2346 ** bug fix: parent thread now can be gc'ed even with a live
2348 ** bug fix: binding a special with PROGV to no value is not
2349 the same as that symbol not having been bound (thanks to
2351 ** bug fix: binding specials is thread safe (thanks to
2353 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2354 and SB-SPROF do not die with 'no handler for signal XX in
2355 interrupt_handle_now(..)' anymore
2356 ** bug fix: WITH-TIMEOUT works with multiple running threads
2357 * fixed some bugs revealed by Paul Dietz' test suite:
2358 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2359 the :method-class keyword argument.
2361 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2362 * new port: the Solaris operating system on x86 processors is now
2363 mostly supported, though some rough edges in the environment
2364 remain. (thanks to Daisuke Homma)
2365 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2366 space for its heap. (thanks to Thiemo Seufer)
2367 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2368 closures. (thanks to Thiemo Seufer)
2369 * minor incompatible change: eof selects abort in the debugger.
2370 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2371 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2373 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2374 deprecated, and will go away in a future revision of SBCL.
2375 * minor incompatible change: GC-ON and GC-OFF are no longer
2376 implemented with a counter, it does not matter how many times gc
2377 is switched on or off
2378 * bug fix: discriminating functions for generic function classes
2379 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2380 make invalid assumptions about method precedence order. (reported
2382 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2383 platforms. (thanks to Thiemo Seufer)
2384 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2385 * bug fix: correct pathname printing with printer escaping is on.
2386 (thanks to Kevin Reid)
2387 * bug fix: complex VOP definitions in "user-space" no longer trigger
2388 package locks. (reported by Zach Beane)
2389 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2390 for funcallable-instance functions, and is no different from
2392 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2393 characters in the current readtable. (reported by Nicholas Neuss)
2394 * bug fix: SUBTYPEP on various CONS types returns more a more
2395 accurate acknowledgment of its certainty.
2396 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2397 lists in some cases. This partially fixes bug 384.
2398 * flush all standard streams before prompting in the REPL and the
2400 * bug fix: signal handling and triggering gc do not conflict
2401 directly anymore, in particular a high frequency sb-sprof does
2402 not prevent gc from running
2403 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2404 approximation for timezone and DST information between the
2405 universal time epoch and the smallest negative 32-bit time_t.
2406 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2407 year 1899 so long as the encoded time is non-negative.
2408 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2409 the correct answer for non-constant rotate amounts when performing
2410 an inline 32-bit rotation.
2412 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2413 there is only one thread in the session
2414 ** bug fix: memory leak for streams created in one thread and
2415 written to in another
2416 ** bug fix: lockup when compiled with gcc4
2417 ** bug fix: race that allows the gc to be triggered when gc is
2419 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2420 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2422 ** bug fix: finished threads are gc'ed properly
2423 * fixed some bugs revealed by Paul Dietz' test suite:
2424 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2425 has arguments with a different set of applicable methods from
2426 the orignal arguments.
2427 ** The type error thrown by MAP now has a correct expected-type
2429 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2430 name a compiled function.
2431 ** Three MISC tests where a large bignum was improperly coerced to
2432 a float that couldn't represent that bignum during type
2433 derivation were fixed.
2434 ** SUBTYPEP can now handle types involving the negation of a
2435 list-form FUNCTION type.
2436 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2437 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2438 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2440 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2441 * New feature: Experimental support for bivalent streams: streams
2442 opened with :element-type :default now allow character and binary
2443 (unsigned-byte 8) I/O
2444 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2445 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2447 * bug fix: no more highly sporadic "couldn't check whether ~S is
2448 readable" when reading a stream and an interrupt hits in the middle
2449 of a select system call
2450 * compiler better recognizes complex arrays (reported by Eduardo
2452 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2453 for variables on SBCL built with linkage-tables. (reported by Luis
2455 * various error reporting improvements.
2456 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2457 (Thanks to Thiemo Seufer)
2458 * bug fix: nested reader invokations work correctly
2459 * bug fix: it is possible to have simultaneous references to foreign
2460 code and foreign data with the same name.
2462 ** added x86-64 support
2463 ** incompatible change: the threading api now works with thread
2464 objects instead of thread ids
2465 ** bug fix: threads are protected from signals and interruption when
2466 starting up or going down
2467 ** bug fix: a race where an exiting thread could lose its stack to gc
2468 ** bug fix: don't halt on infinite error in threads if possible
2469 ** fixed numerous gc deadlocks introduced in the pthread merge
2470 ** bug fix: fixed thread safety issues in read and print
2471 ** bug fix: debugger doesn't hang on session lock if interrupted at
2472 an inappropriate moment
2473 ** bug fix: run-program is now thread safe(r)
2474 ** bug fix: inner with-recursive-lock no longer releases the mutex
2475 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2476 * fixed some bugs revealed by Paul Dietz' test suite:
2477 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2478 EXPECTED-TYPE slots filled.
2479 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2481 ** MAKE-CONDITION accepts classes as type-designators.
2482 ** COMPILE may never return NIL.
2483 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2484 range before calling Unix time functions
2486 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2487 * numerous signal handling fixes to increase stability
2488 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2489 * minor incompatible change: we now correctly canonize default
2490 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2491 as per the MOP, rather than the historical (INITARG INITFUNCTION
2492 INITFORM). (reported by Bruno Haible)
2493 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2494 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2495 for more information.
2496 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2497 pathname is a directory pathname.
2498 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2499 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2501 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2502 :METACLASS argument in addition to a class name. (reported by
2503 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2504 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2505 (reported by Bruno Haible; patch from Gerd Moellmann)
2506 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2508 * bug fix: more cleanups to the floating point exception handling on
2509 x86-64 (thanks to James Knight)
2510 * bug fix: the compiler does not try to constant fold calls of
2511 COERCE and BIT-* functions when they return freshly constructed
2512 objects. (reported by Nikodemus Siivola and Paul Dietz)
2513 * optimization: improved the MIPS versions of generic (in the
2514 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2515 * optimization: direct conversion of (unsigned-byte 32) to floats on
2516 the PowerPC platform.
2517 * optimization: structure instances with raw slots now use less
2518 memory, and probably show better memory locality. (thanks to
2520 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2521 are treated as requests for stack allocation on the x86-64,
2522 Alpha-32, PPC and SPARC platforms.
2523 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2524 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2525 (thanks to Tony Martinez)
2527 ** gcing a dead thread can no longer lead to lockups
2528 ** threads block signals until they are set up properly
2529 ** errno is no longer shared by threads
2530 ** interrupt-thread restores the eflags register on x86
2531 ** fixed some lockups due to gc/thread interaction
2532 * fixed some bugs revealed by Paul Dietz' test suite:
2533 ** invalid dotted lists no longer raise a read error when
2534 *READ-SUPPRESS* is T
2535 ** signal an error if a symbol that names a declaration is used
2536 as the name of a type, or vice versa
2537 ** allow using the (declare (typespec var*)) abbreviation for
2538 (declare (type typespec var*)) with all type specifiers
2539 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2540 ** always return NIL from PPRINT-POP when OBJECT is NIL
2541 ** don't signal errors when pretty-printing malformed LABELS,
2542 FLET or MACROLET forms
2543 ** declarations in a DOLIST body are also in scope for the
2545 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2547 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2550 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2551 * fixed cross-compiler leakages that prevented building a 32-bit
2552 target with a 64-bit host compiler.
2553 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2554 opened with :IF-EXISTS :OVERWRITE.
2555 * fixed bug 281: error for an invalid qualifier in a short-form method
2556 combination method is not signalled until the faulty method is called.
2557 * bug fix: iteration variable type inferrer failed to deal with open
2558 intervals. (reported by Alan Shields)
2559 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2560 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2561 or more runtime options were provided to the sbcl binary.
2562 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2563 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2564 * optimization: there's now a fast-path for fixnum arguments in the
2565 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2566 * optimization: the code generated on x86-64 is more compact thanks
2567 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2568 * bug fix: floating-point exception handling now partly works on
2569 x86-64. (Thanks to James Knight)
2570 * improvement to the MIPS backend from Thiemo Seufer: C-style
2571 64-bit long long arguments and return values to alien functions
2573 * fixed some bugs revealed by Paul Dietz' test suite:
2574 ** the type-error signalled from WARN has a filled-in DATUM slot.
2575 ** the type-error required when a stream is not associated with
2576 a file has the stream as its datum.
2577 ** type-errors on single-floats on x86-64 no longer have
2578 :INVALID-OBJECT as the datum
2579 ** the type-errors signalled for invalid function names now have
2580 a correct expected type
2581 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2582 for structures defined with a :TYPE. Documentation strings for
2583 typed structures are no longer immediately discarded
2584 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2585 broadcast streams and synonym streams. FILE-LENGTH now also works
2586 on broadcast streams.
2588 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2589 * incompatible change: the --noprogrammer option, deprecated since
2590 version 0.7.5, has been removed. Please use the equivalent
2591 --disable-debugger option instead.
2592 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2594 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2595 inoperational for a while now) has been completely removed.
2596 * null lexical environments are now printed as #<NULL-LEXENV>,
2597 significantly reducing the amount of clutter in typical backtraces.
2598 * documentation on weak pointers, finalization, and after GC hooks
2599 has been added to the manual.
2600 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2601 as other specialized array types, is much faster. SUBSEQ and
2602 COPY-SEQ on such arrays have also been sped up.
2603 * optimization: EQL is now more efficient when at least other argument
2604 is known to be of type (OR FIXNUM (NOT NUMBER)).
2605 * fixed bug: the runtime is now less vulnerable to changes in the
2606 size of the SBCL object on OS X, and virtual memory is reserved for
2607 all spaces that need to be at a fixed address.
2608 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2609 * fixed bug: finalizers and after GC hooks that cause consing are now
2611 * fixed bug: compiler error messages and summaries are now printed to
2612 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2613 * fixed inference of the upper bound of an iteration variable.
2614 (reported by Rajat Datta).
2615 * fixed bug 211e: calling local functions with duplicated constant
2616 keyword argument no longer causes a bogus style warning about an
2618 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2619 ftype declaration to be disregarded. (reported by Dave Roberts)
2620 * fixed bug 373: caused by erronous compilation of references to alien
2621 variables in the runtime on ppc/darwin.
2622 * fixed bug 376: CONJUGATE type deriver.
2623 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2624 (reported by Baughn on #lisp)
2625 * a cross-compiler bug on non-x86 platforms has been identified and
2626 fixed. (thanks to Bruno Haible)
2627 * improvements to the MIPS runtime code for increased stability.
2628 (thanks to Thiemo Seufer)
2629 * increased the maximimum compact environment size to allow
2630 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2631 * partial workaround for bug 135: don't name the function we're
2632 calling for hairy cases of EVAL, so as not to accumulate one environment
2633 entry per call to EVAL. (reported by Kevin Reid)
2634 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2635 * optimization: type testing for non-vector arrays should be faster.
2636 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2638 * bug fix: setting 31st element of a bit vector to zero did not work
2640 * bug fix: redefining a class definition which failed due to a
2641 previous accessor / function clash now works (but see BUGS entry
2642 #380 for more problems in this area). (thanks to Zach Beane)
2643 * the long form of DEFINE-METHOD-COMBINATION disables method group
2644 checking when given a single method group with pattern *. (thanks
2646 * on x86 compiler supports stack allocation of results of simple
2647 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2648 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2649 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2650 * fixed some bugs related to Unicode integration:
2651 ** the restarts for recovering from input and output encoding
2652 errors only appear when there is in fact such an error to
2654 * fixed some bugs revealed by Paul Dietz' test suite:
2655 ** MISC.549 and similar: late transformation of unsafe type
2656 assertions into derived types caused unexpected code
2658 ** SCALE-FLOAT type deriver is less wrong.
2659 ** type derivers for EXP, LOG and similar functions compute result
2660 types for complex arguments better.
2661 ** (MISC.563) CONJUGATE type deriver works for very restricted
2663 ** out-of-line type testers for character strings are available.
2664 ** EQUAL compiler transform understands specialness of objects
2666 ** accessing double-floats stored on the stack now works on x86-64.
2667 ** debugger internals could sometimes create invalid lispobjs,
2668 resulting in GC crashes.
2669 ** MISC.548: type check weakening can convert required type into
2671 ** initialization forms for bindings are not in scope of free special
2674 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2675 * incompatible change: thread support for non-NPTL systems has
2676 been removed - locking is buggy and unreliable. A threaded
2677 SBCL build will now warn at startup and refuse to create
2678 new threads, unless futex support is detected in the kernel
2679 * incompatible change: the top level REPL now has only an ABORT
2680 restart associated with it, not TOPLEVEL and ABORT as it used to.
2681 TOP and TOPLEVEL are now available as debugger commands for
2682 returning to the top level.
2683 * incompatible change: forms evaluated in the REPL now use the
2684 global optimization policy.
2685 * incompatible change: user- and system-initialization files are
2686 no longer processed with LOAD, but by READ and EVAL; hence the
2687 global optimization policy, startup package, readtable, etc,
2689 * The .fasl file format number has been incremented because of
2690 various incompatible changes.
2691 * internal entry point details and argument counts no longer appear
2692 in backtraces unless explicitly requested by setting
2693 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2694 * built-in and standard functions no longer have names like "top
2695 level local call to FOO".
2696 * fixed bug 32: functions defined in non-null lexical environments
2697 now have more legible printed representation
2698 * fixed bug 33: functions defined in non-null lexical environemnts
2699 are now more amenable to inspection by INSPECT.
2700 * workaround for bug 354: XEPs no longer appear in backtraces unless
2701 explicitly requested.
2702 * fixed bug: receiving the signal which results from attempting to
2703 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2704 SIGBUS on other *BSDs) on architectures where the C stack is also
2705 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2706 to debugger confusion or wild instability. (reported by Cheuksan
2708 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2709 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2710 (reported by Lutz Euler)
2711 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2712 compiled code. (reported by Paul Dietz)
2713 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2714 specialized parameter to a method to something that is not TYPEP
2715 the specializer is now possible.
2716 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2717 face of package deletion.
2718 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2719 pathname. (reported by David Tolpin on c.l.l)
2720 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2721 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2722 STRING-STREAM and FILE-STREAM, respectively.
2723 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2724 than previously; in addition, its test suite is now run on build.
2725 (thanks to Luke Gorrie)
2726 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2727 * optimization: added a immediate representation for single-floats
2729 * fixed some bugs revealed by Paul Dietz' test suite:
2730 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2731 ** attempting to create a package with a colliding nickname causes
2732 correctable errors to be signalled.
2733 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2734 ** several x86-64 backend bugs related to sign-extension of immediate
2737 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2738 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2739 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2741 * fixed loading of multiply forward-referenced layouts.
2742 (thanks to Cheuksan Wang)
2743 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2744 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2745 (see COMPILE-FILE documentation for details of :PRINT option)
2746 * fixed bugs 19 and 317: fixed-format floating point printing is
2747 more accurate. This also fixes a bug reported by Adam Warner
2748 related to the ~@F format directive.
2749 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2751 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2752 dispatch table if the from-char is a dispatch macro character.
2753 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2754 by the wordsize no longer ignore the last word. (reported by Lutz
2756 * fixed bug in type checking of dynamic-extent variables. (reported
2758 * optimization: sequence traversal functions use their freedom to
2759 coerce function designators to functions.
2760 * optimization: code with many calls to CLOS methods specialized on
2761 CLOS classes has had redundant type checks removed.
2762 * optimization: added declarations to speed up operations that access
2763 the internal character database (for example STRING-UPCASE)
2764 * optimization: comparison operations between floats and sufficiently small
2765 fixnums no longer create extra rationals
2766 * fixed some bugs related to Unicode integration:
2767 ** portions of multibyte characters at the end of buffers for
2768 character-based file input are correctly transferred to the
2769 start of the buffer at the next read.
2770 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2771 passing it through to OPEN.
2772 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2773 argument given to internal calls to OPEN.
2774 ** the built-in comment readers (introduced by character sequences
2775 ";" and "#|") are more forgiving to encoding errors; they will
2776 STYLE-WARN and then attempt to resync the stream at a character
2777 boundary. (thanks to Teemu Kalvas)
2778 * fixed some bugs in the x86-64 port:
2779 ** Negative short int return values from c-calls are sign-extended
2781 ** The stack is aligned to 16-bytes for c-calls, as required by
2782 the ABI. (thanks to Cheuksan Wang)
2783 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2784 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2785 for enums. (thanks to Vincent Arkesteijn)
2786 ** Multiple small optimizations and bugfixes for floating point
2788 * fixed some bugs revealed by Paul Dietz' test suite:
2789 ** Space, Tab, Linefeed, Return and Page have the invalid
2790 secondary constituent character trait.
2791 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2793 ** WITH-INPUT-FROM-STRING should only update the index place on
2795 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2796 works more reliably.
2797 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2798 with one-dimensional arrays with fill pointers.
2799 ** TYPE-OF failed on a complex with an integer realpart and a
2801 ** compiler failure during type inference for the code of form
2802 (IF (EQL X (THE ...)) ...) (MISC.535).
2804 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2805 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2806 platform. The port supports 61-bit fixnums, large memory spaces
2807 and reloading shared object files.
2808 * enhancement: saving cores with foreign code loaded is now
2809 supported on ppc/Darwin in addition to the previously supported
2811 * enhancement: the statistical profiler now walks deeper into the
2812 call stack for more meaningful call-graphs and accrued time
2813 reports (x86/x86-64 only). It also now reports time spent in
2815 * enhancement: it is now possible to trace most individual methods
2816 of a generic function in addition to tracing the generic function
2818 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2820 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2821 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2822 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2823 produces an error. (thanks to Vincent Arkesteijn)
2824 * bug fix: NAMESTRING on pathnames with :WILD components in their
2825 directories works correctly. (thanks to Artem V. Andreev)
2826 * fixed bug 125: compiler preserves identity of closures. (reported
2828 * bug fixed: functions with &REST arguments sometimes failed with
2829 "Undefined function" when compiled with (DEBUG 3). (reported by
2831 * bug fix: overflow during compiling of setting element of a bit
2832 vector with constant index and value. (reported by Timmy Douglas)
2833 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2834 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2835 * on x86 compiler partially supports stack allocation of dynamic-extent
2837 * GO and RETURN-FROM do not check the extent of their exit points
2838 when compiled with SAFETY 0.
2839 * fixed some bugs related to Unicode integration:
2840 ** encoding and decoding errors are now much more robustly
2841 handled; it should now be possible to recover even from invalid
2842 input or output to the terminal. (thanks to Teemu Kalvas)
2843 ** provided a first cut at implementing STRING-TO-OCTETS and
2844 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2845 ** altered the SB-MD5 contributed module slightly, changing the
2846 interface just enough for it to be supportable for builds where
2847 lisp characters are not eight bits.
2848 * fixed some bugs revealed by Paul Dietz' test suite:
2849 ** the FORMATTER-generated functions for ~V[ conditionals require
2850 the correct number of arguments.
2851 ** READ-FROM-STRING returns the mandated second value when applied
2852 to displaced strings.
2853 ** the #\Rubout and #\Backspace characters are treated as invalid
2854 constituent characters by the tokenizer.
2856 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2857 * new feature: reloading changed shared object files with
2858 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2859 * new feature: references to foreign variables and functions
2860 can now be compiled and loaded before the corresponding shared
2861 object file is loaded, as long as the foreign definitions are
2862 available at runtime.
2863 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2864 supported. (thanks to Dan Debertin)
2865 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2866 just keywords. (thanks to Vincent Arkesteijn)
2867 * fixed bug #331: structure-class instances corresponding to
2868 DEFSTRUCT forms are now created eagerly.
2869 * fixed bug #345: backtraces from calls to undefined functions work
2870 on x86 as well. Related bug #61 is now also partially fixed on x86
2871 (backtraces from throws to unknown catch tags.)
2872 * bug fix: lambda-list parsing is now stricter vrt. order and number
2873 of lambda-list keywords.
2874 * bug fix: as specified by AMOP, an error is signalled if a
2875 class-option appears multiple times in a DEFCLASS form. (reported
2877 * bug fix: RANDOM can be compiled when the compiler derives the type
2878 of its numeric argument as a disjoint set of small integers.
2879 (reported by Paul Dietz)
2880 * bug fix: starting a core saved with shared objects loaded when
2881 those objects are not available no longer causes threaded SBCL to
2882 hang. (reported by Sean Ross)
2883 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2885 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2886 argument, which must always be NIL. (reported by Kalle Niemitalo)
2887 * bug fix: printing 1.0d+23 no longer results in an error.
2888 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2889 * bug fix: structure slot setters preserve evaluation order. (thanks
2891 * fixed some bugs related to Unicode integration:
2892 ** RUN-PROGRAM can allow its child to take input from a Lisp
2893 stream. (reported by Stefan Scholl)
2894 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2895 locales. (reported by Ken Causey)
2896 * fixed some bugs revealed by Paul Dietz' test suite:
2897 ** INCF, DECF and REMF evaluate their place form as specified in
2899 ** FORMATTER expands ~{ ~} iteration directives with V or #
2900 parameters correctly.
2901 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2902 consequent uses no arguments correctly.
2903 ** the system has a partial understanding of the (COMPLEX RATIO)
2905 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2908 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2909 * new feature: a build-time option (controlled by the :SB-UNICODE
2910 keyword feature, enabled by default) for building the system with
2911 support for the entire 21-bit character space defined by the
2913 * new feature: the system now has rudimentary external-format
2914 support; the primary user-visible change at this time is that
2915 characters with the high bit set (such as lower-case-e-acute) will
2916 print correctly to a terminal in a UTF-8 environment.
2917 * minor incompatible change: BASE-CHAR no longer names a class;
2918 however, CHARACTER continues to do so, as required by ANSI.
2919 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2920 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2921 has been moved to the SB-EXT package (temporarily re-exported from
2923 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2924 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2926 * fixed bug #351: better error-handlind and reporting for malformed
2928 * fixed bug #350: bignum-printing is now more memory-efficient,
2929 allowing printing of very large bignums, eg. (expt 2 10000000).
2930 (reported by Bruno Haible)
2931 * fixed bug #302: better primitive-type selection for intersection
2933 * fixed bug #308: non-graphic characters now all have names, as
2934 required. (reported by Bruno Haible)
2935 * bug fix: redefining a class with different superclasses now correctly
2936 removes it from the direct-subclasses of its previous superclasses.
2937 (reported by David Morse)
2938 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2939 new value now works. (reported by Bruno Haible)
2940 * bug fix: correct canonicalization of multiple non-standard slot
2941 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2942 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2943 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2944 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2945 now exists, an signals an error.
2946 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2947 during macroexpansion for non-iteration variables as well. (reported
2948 by Bruno Haible for CMUCL)
2949 * bug fix: Cyclic structures and unprintable objects in compiler
2950 messages no longer cause errors. (reported by Bruno Haible)
2951 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2952 and READ-FROM-STRING all now return a primary value of NIL if
2953 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2954 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2955 (reported by Bruno Haible for CMUCL)
2956 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2957 do not designate a condition. (reported by Bruno Haible for
2959 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2960 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2961 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2962 permitting resolution in favour of any of the conflicting symbols.
2963 (reported by Bruno Haible for CMUCL)
2964 * bug fix: EQUAL compiler optimizations is less aggressive on
2965 strings which can potentially compare true despite having distinct
2966 specialized array element types.
2967 * bug fix: unit enumerations can be defined without dividing by
2968 zero. (thanks to Vincent Arkesteijn)
2969 * FORMAT compile-time argument count checking has been enhanced.
2970 (report from Bruno Haible for CMUCL)
2971 * a partial workaround for the bug 262: the compiler does not try to
2972 inline-expand a local function doing RETURN-FROM from a deleted
2973 BLOCK. (thanks to Peter Denno for the bug report and to David
2974 Wragg for the simple test case)
2975 * fixed some bugs revealed by Paul Dietz' test suite:
2976 ** RENAME-PACKAGE allows all package designators as new package
2978 ** constraint propagation and lambda variable substitution are
2979 more cautious in dealing with partially deleted code.
2980 ** compiler sometimes lost reoptimization passes.
2981 ** CERROR, given a condition as condition designator, passes its
2982 remaining arguments to the continue format control without
2984 ** Case-altering FORMAT directives work correctly on non-ASCII
2986 ** The REAL type specifier handles bounds outside the floating
2987 point ranges without signalling FLOATING-POINT-OVERFLOW.
2988 ** Functions with IR1-transformations can create intercomponent
2989 references to global functions.
2990 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2992 ** FORMAT ~R treats a nil value for its first parameter correctly.
2994 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2995 * enhancement: saving cores with foreign code loaded is now
2996 supported on x86/NetBSD and sparc/Linux in addition to the previously
2997 supported platforms.
2998 * bug fix: on some platforms repeated installations caused multiple
2999 copies of HTML documentation to be installed -- should not happen
3000 any more. (reported by Stefan Scholl)
3001 * bug fix: parsing self-recursive alien record types multiple times
3002 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3003 original patch by Helmut Eller for CMUCL)
3004 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3005 (thanks to Richard Kreuter)
3006 * bug fix: defining classes whose accessors are methods on existing
3007 generic functions in other (locked) packages no longer signals
3008 bogus package lock violations. (reported by François-René Rideau)
3009 * bug fix: special variables as DEFMETHOD parameters no longer have
3010 associated bogus type declarations. (reported by David Wragg and
3012 * bug fix: read-write consistency on streams of element-type
3013 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3014 * bug fix: redefiniton of the only method of a generic function with
3015 no DEFGENERIC no longer emits a full WARNING. In addition,
3016 redefinition of generic functions with no DEFGENERIC to an
3017 incompatible lambda list now signals an error. (thanks to Zach
3019 * bug fix: DEFGENERIC now works even when there's a function of the
3020 same name in an enclosing lexical environment. (thanks to Zach
3022 * fixed compiler failure, caused by instrumenting code during
3023 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3024 * optimization: added loop analysis and improved register allocation
3025 * fixed some bugs revealed by Paul Dietz' test suite:
3026 ** POSITION on displaced vectors with non-zero displacement
3027 returns the right answer.
3028 ** (SIMPLE-STRING) is a valid type specifier for sequence
3030 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3032 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3033 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3035 ** The justification version of the FORMAT ~< directive treats
3036 non-zero minpad parameter correctly.
3038 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3039 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3040 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3041 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3042 the supported interface.
3043 * new feature: Single-stepping of code compiled with DEBUG 2 or
3044 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3045 * new feature: saving cores with foreign code loaded is now
3046 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3047 Timothy Moore's work for CMUCL)
3048 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3049 parameters to * instead of NIL if no initform is supplied.
3050 (reported by Johan Bockgaard)
3051 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3052 correctly when FUNCALL appears as the car of the form. Note:
3053 despite this FUNCALL forms are not currently subject to
3054 compiler-macro expansion. (port of Raymond Toy's fix for the
3055 same from CMUCL, reported by Johan Bockgaard)
3056 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3057 (thanks for Teemu Kalvas)
3058 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3059 case instead of terminating the iteration (thanks for Julian
3060 Squires, Sean Champ and Raymond Toy)
3061 * bug fix: incorrect expansion of defgeneric that caused a style
3062 warning. (thanks for Zach Beane)
3063 * bug fix: slot accessor effective method computation works properly
3064 for classes with multiple non-standard applicable methods on
3065 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3066 * on x86 compiler supports stack allocation of results of LIST and
3067 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3068 CMUCL implementation by Gerd Moellmann)
3069 * fixed some bugs revealed by Paul Dietz' test suite:
3070 ** FORMAT strings with both the ~<~:;~> form of the justification
3071 directive and pretty-printing directives cause an error.
3073 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3074 * incompatible change: the internal functions
3075 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3076 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3077 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3078 instead of the old functions.
3079 * new feature: on platforms where "dladdr" is available foreign
3080 function names now appear in backtraces. (based on Helmut Eller's
3082 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3083 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3085 * documentation: ASDF manual is now distributed with SBCL.
3086 * bug fix: SBCL can now load its contributed modules with REQUIRE
3087 even if the system-provided entries have been removed from
3088 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3090 * bug fix: backtraces involving undefined functions or assembly
3091 routines are more informative. (thanks to Brian Downing)
3092 * bug fix: mutually referent alien structures now work correctly.
3093 (reported by Rick Taube)
3094 * bug fix: structures defined by WITH-ALIEN can be referred to
3095 within other definitions in the same WITH-ALIEN.
3096 * bug fix: division operators (MOD, TRUNCATE and the like) with
3097 constant zero divisors and integer dividends no longer generate
3099 * bug fix: provide default methods for INPUT-STREAM-P and
3100 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3101 * bug fix: improve the detection and resolution of MOP metacycles
3102 (where effective method computation depends on the generic function
3103 having its effective method computed). (reported by Bruno Haible)
3104 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3105 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3106 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3107 * bug fix: pathnames with relative directory components can be
3108 represented relative to default pathnames.
3109 * optimization: in taking the GCD of bignums, reduce the two bignums
3110 to approximately the same size (using Euclid's algorithm) before
3111 applying the more sophisticated binary GCD. (thanks to Juho
3113 * optimization: COUNT on bitvectors now operates word-at-a-time.
3114 * optimization: ASH with a positive, but not necessarily constant,
3115 (leftwards) shift, when in a modular context, is compiled to a
3117 * fixed some bugs revealed by Paul Dietz' test suite:
3118 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3119 if the corresponding argument is NIL.
3120 ** FORMAT directives accepting a minpad parameter treat negative
3122 ** literal commas as character parameters to FORMAT directives are
3124 ** literal spaces directly after ~<Newline> directives within a
3125 format-logical-block (~:< ~@:>) do not induce :FILL-style
3126 conditional newlines.
3127 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3128 as specified: it no longer includes conditional newlines).
3129 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3131 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3132 :PER-LINE-PREFIX argument does not evaluate to a string.
3134 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3135 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3136 the manual for details; for now, package locks can be disabled by
3137 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3138 if no major problems are found then it is likely that they will be
3139 compiled in unconditionally.
3140 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3141 unsupported operators on all platforms. To load a shared library
3142 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3143 object file, link it into a shared library outside of SBCL and
3144 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3146 * bug workaround: ROOM T and the GC were not working together
3147 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3148 reporting facility aren't preserved. That reporting has been
3149 disabled, so now until and unless someone figures out how to make it
3150 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3151 * minor incompatible change: as threatened around sbcl-0.8.0, the
3152 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3153 The symbols are also exported from SB-PCL for backwards
3154 compatibility, but more so than before SB-PCL should be treated as
3155 an implementation-internal package.
3156 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3158 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3159 It is known as of this release not to work on the Alpha, however.
3160 * fixed bug #167: errors signalled due to illegal syntax in method
3161 bodies are now more legible.
3162 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3163 designators and can hence be used with TYPEP.
3164 * fixed bug #333: CHECK-TYPE now ensures that the type error
3165 signalled, if any, has the right object to be accessed by
3166 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3167 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3168 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3170 * fixed bug #334: programmatic addition of slots using specialized
3171 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3172 and :ALLOCATION :CLASS slots.
3173 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3174 float exponents. (rereported by Peter Seibel)
3175 * fixed a bug: #\Space (and other whitespace characters) are no
3176 longer considered to be macro characters in standard syntax by
3177 GET-MACRO-CHARACTER.
3178 * fixed bug: initialization of condition class metaobjects no longer
3179 causes an instance of the condition to be created. (reported by
3181 * fixed bug: it is now possible to have slots such that
3182 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3183 description is neither :INSTANCE nor :CLASS.
3184 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3185 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3186 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3187 non-standard SLOT-DEFINITION-ALLOCATION values.
3188 * fixed bugs: various race conditions handling exiting threads.
3189 CL-PPCRE's thread torture test now passes.
3190 * fixed arguably-a-bug: GC time proportional to number of threads in
3191 system even when most of them are idle
3192 * optimization: improved performance of BIT and SBIT on bit-vectors.
3193 * .fasl file incompatibility: The fasl file version number has
3194 been incremented because of changes associated with package locks.
3196 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3197 * minor incompatible change: the system no longer provides
3198 optimization hints (conditions which are TYPEP
3199 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3200 mode; these hints are still emitted when higher SPEED optimization
3202 * new contrib module: a sampling profiler (profiling by statistical
3203 sampling, rather than by instrumenting functions) is available as
3204 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3205 * the behaviour of the standard function ED is now customizeable by
3206 third parties through a hook variable: see ED's documentation
3207 string for information on the protocol.
3208 * the compiler no longer emits efficiency notes for (FUNCALL X)
3209 when the type of X is uncertain under default optimization
3211 * fixed bug 276: mutating a binding of a specialized parameter to a
3212 method to something that is not TYPEP the specializer is now
3214 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3215 exhibit the required behaviour on the x86 platform. (thanks to
3216 Peter van Eynde, Eric Marsden and Bruno Haible)
3217 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3218 even for difficult arguments. (reported by Peter Graves)
3219 * fixed bug 141a: the backquote printer now descends quoted
3221 * fixed another bug in backquote printing: no more destructive
3222 modification of the form's list structure. (reported by Brian
3224 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3225 move between its address being taken and the call to
3226 interrupt_thread, fixing a crashing race condition.
3227 * the SB-POSIX contrib implementation has been adjusted so that it
3228 no longer exhibits ridiculously poor performance when constructing
3229 instances corresponding to C structs.
3231 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3232 * minor incompatible change: the sb-grovel contrib now treats C
3233 structures as alien (in the sense of SB-ALIEN) objects rather than
3234 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3235 has implications for memory management of client code
3236 (sb-grovel-returned objects must now be manually managed) and for
3237 type safety (alien objects now have full types).
3238 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3239 used to control emission of compiler diagnostics, rather than the
3240 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3241 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3242 quality should be considered deprecated.
3243 * install.sh now installs the user manual as well
3244 * (not quite a new documentable feature, but worth considering in
3245 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3246 beginnings of a semantically meaningful condition hierarchy is
3247 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3249 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3250 designator as the defaults argument.
3251 * fixed bug: Displaced arrays whose displaced-to array has become
3252 too small now cause ARRAY-DIMENSION to signal an error, providing
3253 for safer bounds-checking. (reported by Bruno Haible)
3254 * fixed bug: DEFCLASS slot definitions with identical :READER and
3255 :WRITER names now signal a reasonable error. (reported by Thomas
3257 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3259 * fixed bug: Invalid slot specification errors now print correctly.
3260 (thanks to Zach Beane)
3261 * fixed bug 320: Shared to local slot value transfers in class
3262 redefinitions now happen corrently from superclasses as
3263 well. (reported by Bruno Haible)
3264 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3266 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3267 improper lists correctly. (reported by Bruno Haible)
3268 * fixed bug 313: source-transform for <fun-name> was erroneously
3269 applied to a call of a value of a variable with name <fun-name>.
3270 (reported by Antonio Menezes Leitao)
3271 * fixed bug 307: The obsolete instance protocol ensures that
3272 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3273 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3274 remove dead unknown-values globs from the middle of the stack.
3275 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3276 easier to resume long computations after using *BREAK-ON-SIGNALS*
3277 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3278 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3279 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3280 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3281 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3282 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3284 * fixed a (fairly theoretical) bug in string printing: if
3285 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3286 does not have array-element-type equal to the most general string
3288 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3289 function name. (thanks to Nikodemus Siivola)
3290 * fixed bug: compile-time format string checker failed on
3291 non-closed ~{. (reported by Thomas F Burdick)
3292 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3293 don't warn on legal loop code involving more than one aggregate
3294 boolean. (thanks to Nikodemus Siivola)
3295 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3296 in keyword position to MAKE-PACKAGE was not being reported as
3298 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3299 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3301 * fixed bugs 280 and 312: the checking for multiple definitions in a
3302 file is less likely to become confused by uses of inline
3304 * fixed bug: the #S reader macro performs the keyword coercion
3305 specified for slot names. (reported by Kalle Niemitalo)
3306 * fixed bug: lambda lists may contain symbols whose names start with
3307 & but are not lambda-list-keywords; their occurrence triggers a
3309 * fixed bug 321: define-method-combination argument lambda lists do
3310 not cause invalid code to be generated when &optional or &aux
3311 variables have default values. (reported by Bruno Haible)
3312 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3313 have CLOS classes; this appears also to have fixed reported
3314 instability in stack exhaustion detection.
3315 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3316 MUFFLE-WARNING when no associated restart is present is now
3318 * optimization: rearranged the expansion of various defining macros
3319 so that each expands into only one top-level form in a
3320 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3322 * optimization: used a previously little-used slot in symbols to
3323 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3325 * fixed some bugs revealed by Paul Dietz' test suite:
3326 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3328 ** Fixed an optimization bug related to inheritance of initforms
3329 from local to shared slots.
3330 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3331 ** CAST optimizer forgot to flush argument derived type.
3332 ** print/read consistency on floats is now orders of magnitude
3333 more likely. (thanks also to Bruno Haible for a similar report
3335 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3336 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3337 for objects of type REAL. Make it so.
3338 ** SXHASH is specified (infelicitously) to respect similarity,
3339 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3340 it so. (thanks to Markus Ziegler)
3341 ** on the Alpha, the compiler succeeds in compiling functions
3342 returning a known number of arguments greater than 63.
3343 ** fixed handling of invalid NIL arguments in keyword position
3345 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3347 ** provided a readably-printable representation for RANDOM-STATE
3349 ** ensured that pathnames, where they have a namestring, always
3350 print using #P"..." syntax.
3352 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3353 * Support for the forthcoming 2.0 version of the NetBSD kernel
3354 running on x86 hardware has been added. (thanks to Perry
3355 E. Metzger most immediately, and others for their past work)
3356 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3357 current release version; SBCL's OpenBSD support had been broken
3358 since about the time of OpenBSD's switch to ELF binary format.)
3359 * [placeholder for DX summary]
3360 ** user code with &REST lists declared dynamic-extent, under high
3361 speed or space and low safety and debug optimization policy.
3362 * The manual has been converted to Texinfo format and the debugger
3363 chapter from the cmucl manual has been added.
3364 * A facility has been added to extract documentation strings from
3365 sbcl and store them as Texinfo-formatted snippets for inclusion in
3366 the manual (via Texinfo's @include directive)
3367 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3368 the test case to Dave Roberts)
3369 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3370 pointers. (reported by Sean Ross)
3371 * bug fix: PROFILE output is printed nicely even for large numerical
3372 values. (thanks to Zach Beane)
3373 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3374 greater than 32 handle EOF correctly.
3375 * bug fix: on X86 an immediate argument of the IMUL instruction is
3376 correctly printed in disassembly. (thanks to Lutz Euler)
3377 * bug fix: class slots in redefined classes preserve their old
3378 values. (thanks to Bruno Haible and Nikodemus Siivola)
3379 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3380 succeeds. (reported by Marco Baringer)
3381 * fixed some bugs revealed by Paul Dietz' test suite:
3382 ** READ-SEQUENCE now works on ECHO-STREAMs.
3383 ** RATIONALIZE works more according to its specification. (thanks
3386 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3387 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3388 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3389 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3390 should matter to you only if you rebind the printer control
3391 variables and then find you want different bindings in the
3392 debugger than in the ordinary execution of your program.)
3393 * The runtime build system has been tweaked to support building
3394 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3395 assembler and linker. (thanks to Nikodemus Siivola)
3396 * Unbound, undefined, undeclared variables now trigger full
3397 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3398 more often programmer error than deliberate exploitation of undefined
3400 * optimization: the hash algorithm for strings has changed to one
3401 that is less vulnerable to spurious collisions. (thanks to Juho
3403 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3404 needless bounds checking. (thanks to Juho Snellman)
3405 * optimization: implemented multiplication as a modular
3406 (UNSIGNED-BYTE 32) operation on the PPC backend.
3407 * fixed some bugs revealed by Paul Dietz' test suite:
3408 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3410 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3411 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3412 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3414 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3416 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3418 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3419 their output stream on EOF from read.
3420 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3421 have been read to end-of-file.
3422 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3424 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3425 description of determination of which consecutive characters
3427 ** Printing the "Space" character with escaping on now yields "#\\ ",
3428 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3429 ** Reading floating-point numbers with *READ-BASE* set to a number
3430 less than 10 works correctly.
3431 ** Reading floating-point numbers with *READ-BASE* set to a number
3432 more than 10 works correctly.
3433 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3434 the readtable currently in effect.
3436 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3437 * minor incompatible change: parsing of namestrings on a physical
3438 (Unix) host has changed; numbers after the final #\. in a
3439 namestring are no longer interpreted as a version field. This is
3440 intented to be largely invisible to the user, except that the
3441 meaning of the namestring "*.*.*" has changed: it now refers to a
3442 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3443 should usually be replaced by
3444 (make-pathname :name :wild :type :wild :version :wild)
3445 with the added benefit that this is more likely to be portable.
3446 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3447 option to OPEN now signals an error if the file being opened
3448 exists; this may have an impact on existing code.
3449 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3450 signals received, on the PowerPC platforms (both Linux and
3451 Darwin). (thanks to Pierre Mai for pointing out the location of
3453 * several fixes on OS X: The system now builds and runs cleanly on
3454 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3455 (thanks to Brian Mastenbrook)
3456 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3457 second-resolution: integer multiples of 1/3600 between -24 and 24.
3458 (thanks to Vincent Arkesteijn)
3459 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3460 type when called with 1 argument; PEEK-CHAR checked type of
3461 PEEK-TYPE only after having read first character from a
3462 stream. (reported by Peter Graves)
3463 * bug fix: the garbage collector now has much better locality
3464 behaviour, and in particular no longer treats all memory as being
3465 exhausted when many small objects point to each other in a deeply
3467 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3468 recognized as being TYPEP their class.
3469 * bug fix: the PUSHNEW documentation string has been corrected.
3470 (thanks to Vincent Arkesteijn)
3471 * bug fix: defaulting of the value for the last of an atypically
3472 large number of multiple values being bound was not being
3473 performed correctly on the Alpha or PPC platforms
3474 * optimization: implemented multiplication as a modular
3475 (UNSIGNED-BYTE 32) operation on the x86 backend.
3476 * optimization: SEARCH on simple-base-strings can now be open-coded.
3477 (see also contrib/compiler-extras.lisp for inspiration for
3478 teaching the compiler about the Boyer-Moore algorithm).
3479 * value, returned by MAX (and MIN) called with several EQUALP, but
3480 not EQL, arguments now does not depend on compiler settings.
3481 * fixed some bugs revealed by Paul Dietz' test suite:
3482 ** in stack analysis liveness information is propagated from
3483 non-local entry points.
3484 ** pathwise CAST removing failed when the CAST node did not start
3486 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3487 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3489 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3490 host is already defined.
3491 ** RENAME-FILE works on streams instead of signalling an internal
3493 ** PEEK-CHAR uses the current readtable when determining whether
3494 or not a character is whitespace.
3495 ** MERGE-PATHNAMES handles the case when the pathname does not
3496 specify a name while the default-pathname specifies a version.
3497 ** Pathnames now stand a better chance of respecting print/read
3499 ** Attempting to use standardized file system operators with a
3500 pathname with invalid :DIRECTORY components signals a
3502 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3504 ** DIRECTORY on logical pathnames is more correct.
3505 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3506 signal a TYPE-ERROR if their argument is not a stream.
3507 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3508 designator argument does not designate a stream.
3509 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3510 examining the synonym.
3511 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3513 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3514 element-type larger than ([UN]SIGNED-BYTE 32).
3516 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3517 * When built with the :SB-FUTEX feature, threaded builds now take
3518 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3519 for faster/more reliable mutex and condition variable support.
3520 * Incompatible change (but one you probably shouldn't have been using
3521 anyway): the interface and code for arbitrating between multiple
3522 threads in the same user session has been redesigned.
3523 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3524 error when called without an explicit environment argument.
3525 (thanks to Nikodemus Siivola)
3526 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3527 confused about their position. (thanks to Adam Warner and Gerd
3529 * bug fix: Pretty printing backquoted forms with unquotations in the
3530 argument list position of various code constructs such as LAMBDA
3531 now works correctly. (reported by Paul Dietz)
3532 * bug fix: Pretty printing unquotations no longer loses all
3533 stream position information.
3534 * optimization: performance of string output streams is now less
3535 poor for multiple small sequence writes.
3536 * optimization: performance of CSUBTYPEP in the presence of complex
3537 expressions involving CONS and NOT many times has been improved.
3538 (reported by Paul Dietz)
3539 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3541 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3542 streams for the REPL, for the debugger, and so on. (thanks to
3544 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3545 * fixed some bugs revealed by Paul Dietz' test suite:
3546 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3547 is ignored if it is too small, rather than propagating through
3548 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3549 ** extremely complex negations of CONS types were not being
3550 sufficiently canonicalized, leading to inconsistencies in
3552 ** VALUES tranformer lost derived type.
3554 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3555 * fixed a bootstrapping bug: the build process no longer assumes
3556 that the various BOOLE-related constants have the same value in
3557 host and target lisps. (noted by Paul Dietz' test suite on an
3558 SBCL binary built from CLISP)
3559 * The system can now be dynamically linked on the MIPS platform,
3560 which enables dynamic loading of foreign code from Lisp. (thanks
3561 to Ralf Baechle for discussions on the MIPS ABI)
3562 * The system now records debugging information for its own source
3563 files in a filesystem-position-independent manner, relative to
3564 the "SYS" logical host.
3565 * fixed a compiler bug: MV-LET convertion did not check references
3566 to the "max args" entry point. (reported by Brian Downing)
3567 * tweaked disassembly notes to be less confident about proclaiming
3568 some instruction as an LRA. (thanks to Brian Downing)
3569 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3570 now each have their own history, command character, and other
3571 characteristics. (thanks to David Lichteblau)
3572 * fixed some bugs revealed by Paul Dietz' test suite:
3573 ** compiler failure in compiling LOGAND expressions including a
3575 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3576 shift greater than 32.
3577 ** FLUSH-DEST did not mark blocks for type check regeneration.
3578 ** HANDLER-CASE failed to accept declarations in handler clauses
3579 in some circumstances.
3581 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3582 * New code in contrib/sb-introspect (still probably not entirely
3583 stable yet) provides some support for smart Lisp development
3584 environments like SLIME.
3585 * The conditions signalled for errors occurring when loading .fasl
3586 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3587 in a way which should help ASDF recover gracefully.
3588 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3589 stuff has been cleaned up. If you code contrib/ stuff, this might
3590 affect you, and you can look at contrib/README, contrib/STANDARDS,
3591 and/or the 0.8.4.27 diff to check.
3592 * In full calls the compiler now does not generate checks for declared
3593 argument types for all arguments.
3594 * various threading fixes
3595 ** and some experimental patches which didn't make it into
3596 the main tree for this release, but which are shipped in
3597 contrib/experimental-thread.patch as a possible fix for some
3598 failures (deadlock, spinning...) in GC-intensive multithreaded
3600 * fixed PPC build problem (source code incompatibility of different
3601 library versions): added offsetof() hackery which attempts to divine
3602 where glibc maintainers put uc_mcontext today
3603 * fixed bug 282: compiler does not trust type assertions while passing
3604 arguments to a full call.
3605 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3606 &OPTIONAL VALUES type parameter.
3607 * fix bug 214: algorithm for noting rejected templates is now more
3608 similar to that of template seletion. (also reported by rydis on
3610 * fixed bug 141b: printing backquoted information readably and prettily
3611 inserts a space where necessary.
3612 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3613 (CHARACTER 10) are now reported as errors, rather than propagated
3614 as unknown types. (reported by piso on #lisp)
3615 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3616 with values NIL and :ERROR. (thanks to Milan Zamazal)
3617 * fixed bug 191c: CLOS now does proper keyword argument checking as
3618 described in CLHS 7.6.5 and 7.6.5.1.
3619 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3620 longer raise an error; further, using a list as a for-as-arithmetic
3621 counter now raises a meaningful error.
3622 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3623 now understood by sequence creation functions such as MAKE-SEQUENCE
3625 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3626 a STRING-INPUT-STREAM.
3627 * compiler enhancement: SIGNUM is now better able to derive the type
3629 * type declarations inside WITH-SLOTS are checked. (reported by
3631 * fixed some bugs revealed by Paul Dietz' test suite:
3632 ** incorrect optimization of TRUNCATE for a positive first
3633 argument and negative second.
3634 ** compiler failure in let-convertion during flushing dead code.
3635 ** compiler failure while deriving type of TRUNCATE on an
3636 interval, containing 0.
3637 ** ASH of a negative bignum by a negative bignum count now returns
3639 ** intersection of CONS types now canonicalizes properly, fixing
3640 inconsistencies in SUBTYPEP.
3642 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3643 * incompatible change: The --disable-debugger command line
3644 option now clobbers the debugger at a more fundamental
3645 level, by redefining #'INVOKE-DEBUGGER instead of by
3646 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3647 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3648 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3649 enter the debugger REPL and then suffer recursive errors
3650 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3651 while under the new system, BREAK in --disable-debugger mode
3652 terminates the system just as an unhandled error would.
3653 * fixed compiler performance when processing loops with a step >1;
3654 * bug fix: DOCUMENTATION now retrieves generic function
3655 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3656 support has been systematized, and now supports the methods
3657 specified by ANSI, along with a default method and a method for
3658 slot documentation. (reported by Nathan Froyd)
3659 * bug fix: effective methods associated with a generic function are
3660 no longer cached over a change of that generic function's method
3661 combination. (reported by Andreas Fuchs)
3662 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3663 names a non-existent directory. (thanks to Andreas Fuchs)
3664 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3665 the PPC platform, lead to stack corruption; this has been fixed.
3666 (reported by Rainer Joswig)
3667 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3668 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3669 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3670 arithmetic in general, is now much more reliable on the PPC
3672 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3673 platform now returns the right answer.
3674 * optimization: restored some effective method precomputation in
3675 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3676 precomputation is now tunable.
3677 * optimization: compiler-internal data structure use has been
3678 reviewed, and changes have been made that should improve the
3679 performance of the compiler by about 20%.
3680 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3681 simple-base-strings and simple-bit-vectors is improved.
3682 * optimization: the optimization of 32-bit logical and arithmetic
3683 functions introduced in version 0.8.3 on the x86 has been
3684 implemented on the mips, ppc and sparc platforms; an
3685 implementation of the same facility, but for 64-bit arithmetic,
3686 has been added for the alpha.
3687 * microoptimization: the compiler is better able to make use of the
3688 x86 LEA instruction for multiplication by constants.
3689 * bug fix: in some situations compiler did not report usage of
3690 generic arithmetic in (SPEED 3) policy.
3691 * bug 145b fix: compiler used wrong type specifier while converting
3692 MEMBER-types to numeric.
3693 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3695 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3696 index argument now works properly on the Alpha platform.
3697 * bug fix: floating point exception treatment on the Alpha platform
3699 * bug fix: FILE-POSITION works much better on string input and
3700 output streams. (thanks to Nikodemus Siivola)
3701 * bug fix: many threading/garbage collection symptoms sorted.
3702 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3703 might be pseudo-atomic.
3704 * internal change: Stopping for GC is now done with signals not
3705 ptrace. GC is now done in whichever thread wanted it, instead of
3707 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3709 * bug fix: result form in DO is not contained in the implicit
3711 * incompatible change: ICR structure is changed; the value part of
3712 CONTINUATION is now called LVAR; corresponding functions are
3713 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3714 * added type deriver for ISQRT (thanks to Robert E. Brown).
3715 * bug fix: better support for loading from the command line when an
3716 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3718 * fixed some bugs revealed by Paul Dietz' test suite:
3719 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3720 ** ROUND and FROUND now give the right answer when given very
3721 small float arguments.
3722 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3724 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3725 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3726 ** LCM should return a non-negative integer.
3727 ** PARSE-INTEGER returned the index of a terminator instead of the
3728 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3729 ** PARSE-INTEGER returned an incorrect index being applied to a
3731 ** LCM with two arguments of 0 returns 0 rather than signalling
3733 ** unsigned addition of a 32-bit constant with the high bit set no
3734 longer causes an internal compiler error on the x86.
3735 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3736 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3737 with negative last argument.
3738 ** byte specifiers with zero size and position no longer cause
3739 an error during type derivation.
3740 ** bignum multiplication on the Alpha platform now returns the
3742 * porting: The system now builds on SuSE AMD64, although it still
3743 generates a 32-bit binary.
3744 * .fasl file incompatibility: The fasl file version number has
3745 been incremented (because of the changes to internal compiler
3746 data structures referred to above).
3748 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3749 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3750 more accurately, on the Darwin kernel running on PowerPC hardware.
3751 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3752 * Compiler code deletion notes now signal a condition of type
3753 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3754 an associated MUFFLE-WARNING restart.
3755 * The compiler now performs limited argument count validation of
3756 constant format strings in FORMAT, and where appropriate in ERROR,
3757 CERROR and WARN. (thanks to Gerd Moellmann)
3758 * New ASDF-INSTALL contrib can be used for automatic download and
3759 installation of third-party Lisp code from CCLAN or other sites
3761 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3762 which forces another thread to execute a function supplied by the
3764 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3765 now accept and act upon their :ELEMENT-TYPE keyword argument.
3766 (reported by Martin Atzmueller, Edi Weitz)
3767 * bug fix: FILE-POSITION now accepts position designators up to
3768 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3769 is the greater. (thanks to Patrik Nordebo)
3770 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3771 Kalle Olavi Niemitalo)
3772 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3773 printable. (reported by Eric Marsden)
3774 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3775 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3776 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3777 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3778 (thanks to Stig Sandoe)
3779 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3780 UNREAD-CHAR now correctly includes the unread character in the
3781 target sequence. (thanks to Gerd Moellmann)
3782 * bug fix in threaded builds: the system can now be suspended and
3783 resumed by shell job control with minimal disruption.
3784 * bug fixes in times and timezones >2038AD
3785 * better handling of "where is GNU make?" problem in build scripts
3786 (thanks to Nikodemus Siivola)
3787 * new optimization: inside a named function any reference to a
3788 function with the same name is considered to be a self-reference;
3789 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3790 optimization quality.
3791 * new optimization on x86: logical functions and + now have
3792 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3793 used when the result is truncated to 32 bits.
3794 * VALUES declaration is partially enabled.
3795 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3796 * fixed some bugs revealed by Paul Dietz' test suite:
3797 ** The system now obeys the constraint imposed by
3798 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3799 types form a lattice under type intersection.
3800 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3801 ** ASSOC now ignores NIL elements in an alist.
3802 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3803 and (1+ MOST-POSITIVE-FIXNUM) answers.
3804 ** The addition of a method with invalid qualifiers to a generic
3805 function does not cause an error to be signalled immediately;
3806 a warning is signalled, and the error is generated only on
3807 calling the generic function.
3808 * changed .fasl file version number, in part to add type codes for
3809 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3810 obscure ANSI requirements
3812 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3813 * fixed bug 148: failure to inline-expand a local function left
3814 garbage, confusing the compiler.
3815 * fixed bugs 3cd: structure slot readers perform type check if the
3816 slot can have an invalid value (i.e. it is either not initialized
3817 or can be written with a less specific slot writer).
3818 * bug fix: the compiler now traps array references to elements off
3819 the end of an array; previously, the bounds checking in some
3820 circumstances could go off-by-one.
3821 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3823 * type declarations for array element types now obey the description
3824 on the CLHS page "Declaration TYPE", as per discussions on
3825 sbcl-help around 2003-05-08. This means that a declaration
3826 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3827 declaration, all references to BAR will be asserted or assumed
3828 (with THE, so dependent on compiler policy) to involve objects of
3829 type FOO. Note that no such declaration is implied in
3830 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3831 * declared types of functions from the "Conditions"
3832 chapter. (reported by Paul Dietz)
3833 * bug fix: CERROR accepts a function as its first argument.
3834 * bug fix: NTH an NTHCDR accept a bignum as index
3835 arguments. (reported by Adam Warner)
3836 * optimization: character compare routines now optimize comparing
3837 against a constant character. (reported by Gilbert Baumann)
3838 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3839 argument now works properly on the MIPS platform.
3840 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3841 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3842 declared to have a functional type, does not cause an error
3844 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3845 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3846 * fixed bug: if last continuation of a deleted block has a
3847 destination, this destination should be deleted too. (reported by
3849 * fixed a bug in the bootstrap process: the host compiler's values
3850 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3851 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3852 test case from Patrik Nordebo)
3853 * improved the ability of the disassembler on the PPC platform to
3854 provide helpful disassembly notes.
3855 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3856 the class in more cases than previously.
3857 * bug fix: FILE-POSITION now understands :START and :END for
3858 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3859 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3860 8) data. (thanks to David Lichteblau)
3861 * bug fix: it is possible to add a method to a generic function
3862 without lambda list.
3863 * bug fix: reader failed to signal END-OF-FILE inside an
3864 object representation. (reported by Nikodemus Siivola)
3865 * fixed some bugs revealed by Paul Dietz' test suite:
3866 ** LAST and [N]BUTLAST should accept a bignum.
3867 ** condition slot accessors are methods.
3868 ** (VECTOR NIL) is a subtype of STRING.
3870 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3871 * minor incompatible change: some nonsensical specialized lambda
3872 lists (used in DEFMETHOD) which were previously ignored now signal
3874 * minor incompatible change: the system is now aware of the types of
3875 variables in the COMMON-LISP package, and will signal errors for
3876 most violations of these type constraints (where previously they
3877 were silently accepted).
3878 * minor incompatible change: COMPILE-FILE now uses the freedom
3879 afforded (ANSI 3.2.2.3) to use derived function types for
3880 functions defined in the same file. This also permits the system
3881 to warn on static type mismatches and function
3882 redefinition. (Currently it does not work with high DEBUG level.)
3883 * minor incompatible change: VALUES declaration is disabled.
3884 * When issuing notes, the compiler now signals a condition of type
3885 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3886 restart for use in user handlers. It is expected that the
3887 COMPILER-NOTE condition will eventually become a condition
3888 supertype to a hierarchy of note types, which will then be
3889 handleable in a similar fashion. However, at the moment, no such
3890 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3891 but it's an implementation detail, not a classification for the
3893 * Changes in type checking closed the following bugs:
3894 ** type checking of unused values (192b, 194d, 203);
3895 ** template selection based on unsafe type assertions (192c, 236);
3896 ** type checking in branches (194bc).
3897 * A short form of VALUES type specifier has ANSI meaning (it has
3898 increased the number of situations when SBCL cannot perform type
3900 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3901 keywords or constants is permissible.
3902 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3903 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3904 classes. (thanks to Antonio Martinez)
3905 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3906 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3907 argument to a pretty-print stream. Instead, it leaves any such
3908 operations to DESCRIBE-OBJECT methods.
3909 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3911 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3912 lambda lists. (thanks to David Lichteblau)
3913 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3914 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3915 (thanks to Gerd Moellmann)
3916 * fixed bug 246: increased compilation speed of long
3917 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3919 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3921 * DEFCONSTANT now throws a condition of type
3922 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3923 constant to a non-EQL value; CONTINUE and ABORT restarts
3924 respectively change and preserve the value.
3925 * fixed bug 63: The code walker, part of the implementation of CLOS,
3926 is now better at handling symbol macros.
3927 * bug fix: There is no longer an internal implementation type named
3928 CL:LENGTH. (reported by Raymond Toy)
3929 * bug fix: In macro-like defining macros/special operators the
3930 implicit block does not enclose the lambda list.
3931 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3932 enclosed in parentheses) are not suitable as type specifiers, and
3933 their use properly signals an error now.
3934 * bug fix: An argument count mismatch for a type specifier in code
3935 being compiled no longer causes an unhandled error at compile
3936 time, but signals a compile-time warning.
3937 * fixed simple vector readable printing
3938 * bug fix: DESCRIBE takes more care over whether the class
3939 precedence list slot of a class is bound before accessing it.
3940 (reported by Markus Krummenacker)
3941 * bug fix: FORMATTER can successfully compile pretty-printer format
3942 strings which use variants of the ~* directive inside.
3943 * bug fix: SEARCH now applies its TEST predicate to the elements of
3944 the arguments in the correct order. (thanks to Wolfhard Buss)
3945 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3946 in type inference. (thanks to Robert E. Brown)
3947 * bug fix: Reading in symbols with an explicit package name of ""
3948 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3949 * fixed some bugs revealed by Paul Dietz' test suite:
3950 ** NIL is now allowed as a structure slot name.
3951 ** Arbitrary numbers, not just REALs, are allowed in certain
3952 circumstances in LOOP for-as-arithmetic clauses.
3953 ** Multiple class redefinitions before slot access no longer
3954 causes a type error.
3955 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3956 association between the name and a class.
3957 ** Generic functions with non-standard method-combination and over
3958 five methods all of which return constants no longer return NIL
3959 after the first few invocations. (thanks to Gerd Moellmann)
3960 ** CALL-NEXT-METHOD with no arguments now passes the original
3961 values of the arguments, even in the presence of assignment.
3962 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3964 ** DISASSEMBLE works with closures and funcallable instances.
3965 ** ADD-METHOD now returns the generic function, not the new method.
3966 ** FIND-METHOD signals an error if the lengths of the specializers
3967 is incompatible with the generic function, even if the ERRORP
3969 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3970 which its argument is a member.
3971 ** DEFCLASS only redefines the class named by its class-name
3972 argument if that name is the proper name of the class;
3973 otherwise, it creates a new class.
3974 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3975 of the UNBOUND-SLOT condition to the name of the slot.
3976 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3977 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3978 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3979 SLOT-MAKUNBOUND in the specified fashion.
3981 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3982 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3983 cross-compilation host. As a consequence, we can now bootstrap our
3984 way up to SBCL starting with a bare gcc toolchain and human-readable
3985 source code (first the source to CLISP, then the source to SBCL).
3986 * A contributed module containing a partial implementation of the
3987 simple-streams interface has been included. (thanks to Rudi
3989 * A contributed module implementing the RFC1321 Message Digest
3990 Algorithm, known as MD5, has been included.
3991 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3992 no longer has any effect, as the code controlled by this feature
3993 has been deleted. (As far as we know, no-one has ever built using
3994 this feature, and its semantics were confused in any case).
3995 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3996 work on conditions (as required by the ANSI specification),
3997 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3998 expected behaviour on conditions. Users should note, however,
3999 that such behaviour is not required by the ANSI specification,
4000 and so use of this behaviour may render their code unportable.
4001 * fixed some bugs revealed by Paul Dietz' test suite:
4002 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4004 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4005 ** SXHASH on condition objects no longer returns NIL.
4006 ** :ALLOCATION :CLASS slots are better treated; their values are
4007 updated on class redefinition, and initforms inherited from
4008 superclasses are applied.
4009 ** REMOVE-METHOD returns its generic function argument even when
4010 no method was removed.
4011 ** SHARED-INITIALIZE now initializes the values of the requested
4012 slots, including those with :ALLOCATION :CLASS.
4013 ** ALLOCATE-INSTANCE now works on structure classes defined via
4014 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4016 ** SLOT-EXISTS-P now works on conditions, as well as structures
4018 ** MAKE-LOAD-FORM now has the required methods on
4019 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4020 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4021 keyword, and now implements the SLOT-NAMES argument.
4022 ** methods with &OPTIONAL arguments no longer allow too many
4023 arguments to be passed in the call without error.
4024 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4025 option is consistent with the required arguments of the generic
4026 function lambda list.
4027 * bug fix: REQUIRE accepts a string designator. (Thanks to
4029 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4030 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4031 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4032 * bug fix: The compiler now checks for duplicated variables in macro
4034 * bug fix: SETQ on globals returns the correct value.
4035 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4036 not a COMPILER-ERROR (followed by some other strange error on
4037 choosing the CONTINUE restart).
4038 * bug fix: make.sh and friends are now more consistent in the way that
4039 they look for GNU "make".
4041 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4042 * experimental native threads support (on x86 Linux >=2.4 only).
4043 This is not compiled in by default: you need to add :SB-THREAD to
4044 the target features. See the "Beyond ANSI" chapter of the manual
4046 * fix for longstanding nonANSIism: The old distinction between
4047 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4048 The return value from CL:FIND-CLASS is now a CLOS class, and
4049 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4050 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4051 * An interface to the MetaObject Protocol, as described in Kiczales,
4052 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4053 MIT Press, 1991, is available from the SB-MOP package.
4054 * incompatible change: the SB-PCL package should now be considered
4055 a private implementation detail, and no longer a semi-private MOP
4057 * minor incompatible change: due to rearrangement for threads, the
4058 control stack and binding stack are now allocated at arbitrary
4059 addresses instead of being hardcoded per-port. Users affected by
4060 this probably have to be doing advanced things with shared
4061 libraries, and will know who they are.
4062 * minor incompatible change: Previously, all --eval forms used were
4063 processed with READ before any of them were processed with EVAL.
4064 Now each --eval form is processed with both READ and EVAL before
4065 the next --eval form is processed. (Thus package operations like
4066 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4067 work as the user might reasonably expect.)
4068 * minor incompatible change: *STANDARD-INPUT* is now only an
4069 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4071 * minor incompatible change: Y-OR-N-P is now character-oriented,
4072 not line oriented. Also, YES-OR-NO-P now works without errors.
4073 (thanks to Antonio Martinez)
4074 * sb-aclrepl module improvements: an integrated inspector, added
4075 repl features, and a bug fix to :trace command.
4076 * Known functions, which cannot be open coded by the backend, are
4077 considered to be able to check types of their arguments. (fixing
4078 a bug report by Nathan J. Froyd)
4079 * fixed a bug in computing method discriminating functions: It is
4080 now possible to define methods specialized on classes which have
4081 forward-referenced superclasses. (thanks to Gerd Moellmann)
4082 * fixed evaluation order in optional entries (reported by Gilbert
4084 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4085 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4086 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4087 required-by-AMOP NAME argument, as well as CLASS and
4088 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4089 * fixed bug 20: DEFMETHOD can define methods using names that are
4090 not the proper names of classes to designate class specializers.
4091 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4092 Unix file descriptors, instead of blowing up. (thanks to Antonio
4094 * Garbage collection refactoring: user-visible change is that a
4095 call to the GC function during WITHOUT-GCING will not do garbage
4096 collection until the end of the WITHOUT-GCING. If you were doing
4097 this you were probably losing anyway.
4098 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4099 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4100 TYPEP the latter but not the former.
4101 * The compiler issues a full WARNING for calls to undefined functions
4102 with names from the CL package.
4103 * MAP-INTO for a vector destination is open coded. (reported by
4104 Brian Downing on c.l.l)
4105 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4106 documentation string.
4107 * fixed some bugs revealed by Paul Dietz' test suite:
4108 ** COPY-ALIST now signals an error if its argument is a dotted
4110 ** Condition slots are now accessed more correctly in the presence
4111 of multiple initargs for a given slot.
4112 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4113 exclude restarts of the same name associated with a different
4115 ** DEFCLASS of forward-referenced classes with another
4116 forward-referenced class in the superclasses list no longer
4118 ** Condition slots are now initialized once each, not multiple
4119 times. (thanks to Gerd Moellmann)
4120 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4122 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4123 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4124 arguments contain duplicated elements.
4125 ** RESTART-CASE understands local macros.
4126 ** RESTART-CASE associates exactly its own restarts with a condition.
4127 ** ENDP in safe mode checks its argument to be of type LIST.
4128 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4129 in question is unbound.
4130 ** Optimized MAKE-INSTANCE functions no longer cause internal
4131 assertion failures in the presence of duplicate initargs.
4132 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4133 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4134 propagated even in the ctor optimized implementation of
4136 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4138 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4139 * a better implementation of SXHASH on (simple) bit vectors,
4140 measured both in execution speed and in distribution of results
4141 over the positive fixnums, has been installed. Likewise, a better
4142 implementation of EQUAL for simple bit vectors is now available.
4143 * fixed CEILING optimization for a divisor of form 2^k.
4144 * fixed bug 240 (emitting extra style warnings "using the lexical
4145 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4146 by Antonio Martinez)
4147 * fixed SXHASH, giving different results for NIL depending on type
4148 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4149 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4150 variable. (found by Rolf Wester)
4151 * SBCL does not ignore type declarations for special
4152 variables. (reported by rif on c.l.l 2003-03-05)
4153 * some bug fixes in contrib/sb-aclrepl/
4154 * fixed some bugs revealed by Paul Dietz' test suite:
4155 ** a bug in the CONS type specifier, whereby the CAR and CDR
4156 types got intertwined, has been fixed;
4157 ** the type system is now able to reason about the interaction
4158 between INTEGER and RATIO types more completely;
4159 ** APPEND, [N]REVERSE and NRECONC check that those their
4160 arguments, which must be proper lists, are really so;
4161 ** An array specialized to be unable to hold elements has been
4162 implemented, as required -- yes, really -- by ANSI;
4163 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4164 on malformed property lists;
4166 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4167 * incompatible packaging change: in line with Unix convention,
4168 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4169 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4170 * REQUIRE and PROVIDE are now optionally capable of doing something
4171 useful. See the documentation string for REQUIRE.
4172 * infrastructure for a managed SBCL contrib system: contributed
4173 modules in this release include:
4174 ** the ASDF system definition facility;
4175 ** an interface to the BSD Sockets API;
4176 ** an ACL-like convenience interface to the repl;
4177 (thanks to Kevin Rosenberg)
4178 ** an implementation of ROTATE-BYTE, with efficient implementation
4180 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4181 gives a closer approximation to the right answer than previously.
4182 (thanks to Raymond Toy)
4183 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4184 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4185 optional environment arguments, as required by ANSI.
4186 * fixed bugs in other functions taking environment objects, allowing
4187 calls with an explicit NIL environment argument to be compiled
4189 * fixed bug 228: primary return values from
4190 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4191 COMPILE or FUNCTION.
4192 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4193 :TYPE will no longer signal errors on innocuous objects.
4194 * fixed bug 231b: SETQ is better at respecting type declarations in
4195 the lexical environment.
4196 * fixed a bug in DEFCLASS: classes named by symbols with no or
4197 unprintable packages can now be defined.
4198 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4199 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4200 * fixed compiler failure related to checking types of functions.
4201 (reported by Robert E. Brown)
4202 * the compiler is now much more consistent in its error-checking
4203 treatment of bounding index arguments to sequence functions: in
4204 (SAFETY 3) code, errors will be signalled in almost all cases if
4205 invalid sequence bounding indices are passed to functions defined
4206 by ANSI to operate on sequences.
4207 * fixed a bug in the build procedure: documentation of SBCL-specific
4208 packages is now preserved and available in the final Lisp image.
4209 * lifted FDEFINITION lookup out of loops in the implementation of
4210 many list operations. (thanks to Robert E. Brown)
4211 * fixed a bug in the reader: the #n# reader macro now works for
4212 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4213 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4214 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4215 E. Brown and Tony Martinez respectively)
4216 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4217 SLOT-BOUNDP: in particular, it is now able to optimize them much
4218 better, and is now not vulnerable to having packages renamed.
4219 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4220 always called when a slot is not present in an instance. (thanks
4222 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4223 longer signal an error on unreading a character following EOF on
4224 the previous constituent stream. (thanks to Tony Martinez)
4225 * fixed some bugs revealed by Paul Dietz' test suite:
4226 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4227 not just nonnegative fixnums;
4228 ** the logical bit-array operators such as BIT-AND now accept an
4229 explicit NIL for their "opt-arg" argument (to indicate a
4230 freshly-consed result bit-array);
4231 ** ELT now signals an error on an invalid sequence index in safe
4233 ** the type system is now cleverer about negations of numeric
4234 types, and consequently understands the BIGNUM and RATIO types
4236 ** the type system is now cleverer about the interaction between
4237 INTEGER and RATIO types: while bugs still remain, many more
4238 cases are accurately computed;
4239 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4240 if it is in the last clause;
4241 ** CONSTANTLY now correctly returns a side-effect-free function in
4243 ** DECLARE is no longer treated as a special-operator; in
4244 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4245 * incremented fasl file version number due to the change in the
4246 DEFSTRUCT-SLOT-DESCRIPTION structure.
4248 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4249 * minor incompatible change: code processed by the "interpreter" or
4250 EVAL now has a compilation optimization policy of (DEBUG 2)
4251 (changed from (DEBUG 1)) to improve debuggability of interactive
4252 development, and to allow the use of the debug RETURN command in
4254 * an experimental implementation of the RETURN command for the
4255 debugger has been included. (thanks to Frederik Kuivinen)
4256 * fixed bug 62: constraints were not propagated into a loop.
4257 * fixed bug in embedded calls of SORT (reported and investigated by
4259 * fixed some bugs revealed by Paul Dietz' test suite:
4260 ** printing and reading of arrays with some dimensions having
4261 length 0 (thanks to Gerd Moellmann);
4262 ** BOA constructor with &AUX argument without a default value does
4263 not cause a type error;
4264 ** CONSTANTP now returns true for all self-evaluating objects.
4266 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4267 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4268 accessors that are related by inheritance, as specified in the
4269 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4270 Valtteri Vuorikoski)
4271 * The compiler is now able to inline functions that were defined in
4272 a complex lexical environment (e.g. inside a MACROLET).
4273 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4275 * Support for the upcoming FreeBSD-5.0 release has been included.
4276 (thanks to Dag-Erling Smorgrav)
4277 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4278 effect when it is not in a toplevel context.
4279 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4280 stand a better chance of being correct. (thanks to Gerd
4282 * fixed bug in COERCE, which now signals an error on coercing a
4283 rational to a bounded real type which excludes the expected
4285 * The compiler is now able to derive types more accurately from the
4286 COERCE and COMPILE functions.
4287 * fixed bug 223: functional binding is considered to be constant
4288 only for symbols in the CL package.
4289 * fixed bug 231: SETQ did not check the type of a variable being set
4290 (reported by Robert E. Brown)
4291 * A new optimization for MAKE-INSTANCE has been included, fixing
4292 various bugs (including relating to :ALLOCATION :CLASS slots and
4293 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4295 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4296 ** As required by ANSI, LOOP now disallows anonymous collection
4297 clauses such as COLLECT I in conjunction with aggregate boolean
4298 clauses such as THEREIS (= I 1);
4299 ** LOOP now signals an error when any variable is reused in the
4300 same loop (including the potentially useful construct analogous
4301 to WITH A = 1 WITH A = (1+ A);
4302 ** IT is only a special loop symbol within the first clause of a
4303 conditional loop clause;
4304 ** LOOP with a typed iteration variable over a hashtable now
4305 signals a type error iff it should.
4306 * fixed some other bugs revealed by Paul Dietz' test suite:
4307 ** FILE-STREAM now names the class previously known as FD-STREAM;
4308 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4309 argument) no longer signals an error;
4310 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4311 of the slot symbol, rather than using the current package
4312 ((:CONC-NAME "") continues to intern the slot's name in the
4314 * incremented fasl file version number, because of the incompatible
4315 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4316 of the new implementation of DEFINE-COMPILER-MACRO.
4318 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4319 * Support for building SBCL for MIPS platforms running in
4320 little-endian mode has now been checked in, and basic
4321 functionality on said platforms verified.
4322 * minor incompatible change: PCL now records the pathname of a file
4323 in which methods and the like are defined, rather than its
4325 * minor incompatible change: TRUENAME now considers the truename of
4326 a file naming a directory to be the pathname with :DIRECTORY
4327 component indicating that directory.
4328 * minor incompatible change: a NAMED clause in the extended form of
4329 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4330 reason for the previous behaviour is unclear.
4331 * more systematization and improvement of CLOS and MOP conformance
4332 in PCL (thanks to Gerd Moellman and Pierre Mai):
4333 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4335 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4336 primary methods with no specializers;
4337 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4339 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4340 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4341 FORWARD-REFERENCED-CLASSes; error reporting on
4342 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4344 ** SXHASH on CLOS instances now uses a slot internal to the
4345 instance to return different numbers on distinct instances,
4346 while preserving the same return value through invocations of
4348 ** DEFMETHOD signals errors when methods with longer incongruent
4349 lambda lists are added to generic functions;
4350 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4351 CLASS, as specified in AMOP;
4352 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4353 on the order returned by the primary method for classes of
4354 class STANDARD-CLASS;
4355 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4356 * fixed some bugs shown by Paul Dietz' test suite:
4357 ** DOLIST puts its body in TAGBODY;
4358 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4360 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4361 value producing form;
4362 ** if more variables are given to PROGV than values, extra
4363 variables are bound and made to have no value;
4364 ** NSUBSTITUTE on list arguments gets the right answer with
4366 ** ELT signals an error of type TYPE-ERROR when the index argument
4367 is not a valid sequence index;
4368 ** LOOP signals (at macroexpansion time) an error of type
4369 PROGRAM-ERROR when duplicate variable names are found;
4370 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4371 ** FUNCALL of special-operators now cause an error of type
4373 ** PSETQ now works as required in the presence of side-effecting
4374 symbol-macro places;
4375 ** NCONC accepts any object as its last argument;
4376 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4378 ** loop-for-as-package does not require a package to be explicitely
4380 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4382 * fixed bug 166: compiler preserves "there is a way to go"
4383 invariant when deleting code.
4384 * fixed bug 172: macro lambda lists with required arguments after
4385 &REST arguments now cause an error to be signalled. (thanks to
4387 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4388 bug. (thanks to Matthew Danish)
4389 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4391 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4392 arguments are lexically rebound. (thanks to Gerd Moellmann and
4394 * fixed bug 194: error messages are now more informative when there
4395 is no primary method applicable in a call to a generic
4396 function. (thanks to Gerd Moellmann)
4397 * fixed bug in command line argument checking (thanks to Julian
4399 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4400 (thanks to Matthew Danish)
4401 * incremented fasl file version number, because of the
4402 SXHASH-related changes in the layout of CLOS data structures
4404 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4405 * minor incompatible change: The runtime (the Unix executable named
4406 "sbcl") is now much pickier about the .core files it will load.
4407 Essentially it now requires .core files to descend from the same
4408 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4409 as the runtime does. (The intent is to prevent the crashes which
4410 can occur, and which can even be reported as mysterious failures,
4411 when people patch the sources or change the build parameters
4412 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4413 sbcl and .core files.)
4414 * fixed bug: VALUES-LIST is no longer optimized away.
4415 * fixed bug 142: The FFI conversion of C string values to Lisp
4416 string values no longer conses excessively. (thanks to Nathan
4417 Froyd porting Raymond Toy's fix to CMU CL)
4418 * began to systematize and improve MOP conformance in PCL (thanks to
4419 Nathan Froyd, Gerd Moellman and Pierre Mai):
4420 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4422 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4423 ** FINALIZE-INHERITANCE is now called on class finalization;
4424 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4425 argument precedence order.
4426 * fixed bug 202: The compiler no longer fails on functions whose
4427 derived types contradict their declared type.
4428 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4429 so it can be non-toplevel.
4430 * The fasl file version number has changed (because of the new
4431 implementation of DEFMACRO).
4432 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4433 safe code, that any length requirement by their type-specifier
4434 argument is valid. The exceptions to this are described in bug
4436 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4437 functions now check the types of their inputs as required by ANSI.
4438 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4439 introduced symbol is DECLAREd to be SPECIAL.
4440 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4441 * fixed bug: :COUNT argument to sequence functions may be negative
4442 * fixed bug: body of DO-SYMBOLS may contain declarations
4443 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4444 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4445 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4446 symbol macro only once
4447 * fixed printing of call frame when argument list is unavailable
4448 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4449 * compiler no longer signals WARNING on unknown keyword
4452 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4453 * A beta-quality port to the mips architecture running Linux,
4454 based on the old CMUCL backend, has been made. It has been tested
4455 on a big-endian kernel, and works sufficiently well to be able to
4456 rebuild itself; it has not been tested in little-endian mode.
4457 * fixed an inconsistency between gencgc.c and purify.c which made
4458 dumping/loading .core files unreliable
4459 * fixed bug 120a: The compiler now deals correctly with IFs where
4460 the consequent is the same as the alternative, instead of
4461 misderiving the return type. (thanks to Alexey Dejneka)
4462 * fixed bug 113: Logical pathnames are now dumpable (the logical
4463 host is resolved at load-time, throwing an error if it is not
4465 * fixed bug 174: FORMAT's error message is slightly clearer when a
4466 non-printing character is used in a format directive.
4467 * fixed several bugs in compiler checking of type declarations, i.e.
4468 violations of the Python "declarations are assertions" principle
4469 (thanks to Alexey Dejneka)
4470 * fixed several bugs in PCL's error checking (thanks to Gerd
4472 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4474 * fixed bug in compilation of functions as first class values
4475 (thanks to Antonio Martinez-Shotton)
4476 * The compiler's handling TYPE-ERRORs which it can prove will
4477 inevitably happen at runtime has been cleaned up and corrected
4478 in several ways. (thanks to Alexey Dejneka)
4479 * improved argument type checking for various basic arithmetic
4480 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4481 lavished on them in the past that they can be compiled in many
4482 ways in different special cases
4483 * fixed bug 181: compiler checks validity of user supplied type
4485 * cleaned up code flushing in optimization: Function calls which
4486 should signal errors for safety purposes (e.g. which ANSI says
4487 should signal errors when their arguments are of incorrect type)
4488 are no longer optimized away.
4489 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4490 * incremented fasl file version number, because changes in the
4491 implementation of sequence functions like COERCE caused
4492 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4493 in old inline expansions) to become undefined. (Actually these
4494 changes were later undone, so we might very well be binary
4495 compatible with 0.7.7 after all, but leaving the version number
4496 incremented seemed like the simplest and most conservative
4499 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4500 * An alpha-quality port to the parisc architecture running Linux,
4501 based on the old CMUCL backend, has been made. This, even more so
4502 than the other backends, should be considered still a work in
4503 progress; known problems include that the Linux kernel in 64-bit
4504 mode does not propagate the correct sigcontext structure to
4505 userspace, and consequently SBCL on a parisc64 kernel will not
4507 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4508 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4509 suppressed.) Also now that the compiler is looking at declarations
4510 in the environment, it checks optimization declarations as well,
4511 and suppresses inlining when (> DEBUG SPEED).
4512 * More fixes have been made to treatment of floating point exception
4513 treatment and other Unix signals. In particular, floating point
4514 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4515 * The detection and handling of control stack exhaustion (infinite
4516 or very deeply nested recursion) has changed. Stack exhaustion
4517 detection is now done by write-protecting pages at the OS level
4518 and applies at all optimization settings; when found, a
4519 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4520 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4521 be caught using IGNORE-ERRORS.
4522 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4523 correctly when transforming recursive LABELS functions to LETs.
4524 (thanks to Alexey Dejneka)
4525 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4526 that are names of constants or global variables.
4527 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4528 alien routines with docstrings.
4529 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4530 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4532 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4533 (thanks to Eric Marsden)
4534 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4535 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4536 * Bug fix: The SPARC backend can now compile functions involving
4537 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4538 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4539 to a functions expecting a PATHNAME-DESIGNATOR.
4540 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4541 lambda lists. (thanks to Alexey Dejneka)
4542 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4543 functions so that EXPORTing the name of the class doesn't cause
4544 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4545 to Antonio Martinez for reporting this)
4546 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4547 constant-folded without failing an assertion. (thanks to Einar
4548 Floystad Dorum for reporting this)
4549 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4550 types are now dealt with more correctly by the compiler.
4551 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4552 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4553 behaviour analogous to RENAME-FILE. This puts its behaviour more
4554 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4556 * The fasl file version number has changed again. (because of the
4557 bug fix involving the names of PCL MAKE-INSTANCE functions)
4559 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4560 * bug fix: Floating point exceptions are treated much more
4561 consistently on the x86/Linux and PPC/Linux platforms.
4562 * Array initialization with :INITIAL-ELEMENT is now much faster for
4563 cases when the compiler cannot open code the array creation, but
4564 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4565 array accesses have also seen a speed increase.
4566 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4567 specified. (This was at the root of some bad interactions between
4568 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4570 * bug fix: Internal error arguments for undefined functions are now
4571 computed correctly on the PPC/Linux platform.
4572 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4573 Raymond Toy's patch for CMU CL)
4574 * Support for the Solaris 9 operating environment has been included
4575 (thanks to Daniel Merritt)
4576 * A very ugly but hopefully complete draft of the missing FFI chapter
4577 of the manual has been created by reformatting the corresponding
4578 CMU CL manual chapter into (currently very ugly and incoherent)
4579 DocBook and bringing it up to date for SBCL behavior. Thus, the
4580 manual is now essentially complete, at least by my extreme
4581 once-and-only-once standards, whereby it's acceptable to refer to
4582 the doc strings of SB-EXT functions as the primary documentation.
4583 * The fasl file version number has changed again, due to cleanup of
4584 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4585 is no longer a static symbol.)
4587 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4588 * SBCL now builds with OpenMCL (version 0.12) as the
4589 cross-compilation host; also, more progress has been made toward
4590 bootstrapping under CLISP.
4591 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4593 * bug 158 fixed: The compiler can now deal with integer loop
4594 increments different from 1; fixing this turned out also to fix
4596 * bug 169 fixed: no more bogus warnings about using lexical bindings
4597 despite the presence of perfectly good SPECIAL declarations (thanks
4598 to David Lichteblau)
4599 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4600 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4601 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4603 * bug 180 fixed: Method combination specifications no longer ignore
4604 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4605 * bug fix: Structure type predicate functions now check their argument
4606 count as they should.
4607 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4608 correctly. (thanks to Pierre Mai)
4609 * minor incompatible change: The --noprogrammer option is deprecated
4610 in favor of the new --disable-debugger option, which is very similar.
4611 (The major difference is that it takes effect at a slightly different
4612 time at startup, causing handling of errors in --sysinit and
4613 --userinit files will be affected differently.) The
4614 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4615 been added to allow this functionality to be controlled from ordinary
4616 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4617 maintainers, who might want to run non-interactive scripts to
4618 build SBCL cores which will later be used interactively.)
4619 * minor incompatible change: The LOAD function no longer, when given
4620 a wild pathname to load, loads all files matching that pathname.
4621 Instead, an error of type FILE-ERROR is signalled.
4623 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4624 * bug 147 fixed: The compiler preserves its block link/count
4625 invariants more correctly now so that it doesn't crash. (thanks
4627 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4629 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4630 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4631 no-value-for-this-character as NIL (as specified by ANSI).
4632 * HOST-NAMESTRING on physical pathnames now returns a string that is
4633 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4634 (thanks to Christophe Rhodes)
4635 * The Alpha port handles icache flushing more correctly. (thanks to
4637 * More progress has been made toward bootstrapping under CLISP. (thanks
4638 to Christophe Rhodes)
4639 * The fasl file format has changed again, because dynamic loading
4640 on OpenBSD (which has non-ELF object files) motivated some cleanups
4641 in the way that foreign symbols are transformed and passed around.
4642 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4643 is no longer treated as whitespace by the reader, but instead as
4644 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4645 |A
\7fB|, instead of A as it used to.
4647 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4648 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4649 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4650 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4651 this as of 0.7.1.45, but was left out of the previous news section
4652 (thanks to Dan Barlow)
4653 * SBCL now runs on the Solaris operating system on SPARC architectures
4654 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4655 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4656 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4657 * SPARC backend cleanups, allowing builds of cores optimized for V8
4658 and V9 SPARCS, and also emission of code targeted to a particular
4659 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4661 * SBCL is closer to bootstrapping under CLISP, thanks to various
4662 fixes by Christophe Rhodes.
4663 * The fasl file format has changed again, to allow the compiler's
4664 INFO database to support symbol macros.
4665 * The user manual (in doc/) is formatted into HTML more nicely.
4666 (thanks to coreythomas)
4667 * The system is smarter about SUBTYPEP relationships, especially
4668 those involving NOT types (including types such as ATOM which are
4669 represented internally using NOT types). Thus SUBTYPEP is less
4670 likely to return (VALUES NIL NIL) in general, and in particular
4671 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4673 * The fasl file format has changed again, because the internal
4674 representation of types now includes a new slot to support the new
4675 SUBTYPEP-of-NOT-types logic.
4676 * (not a change in the main branch of SBCL, but a related prototype
4677 which can hopefully be merged into the main branch of SBCL in the
4678 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4679 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4680 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4681 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4682 dispatch macro character combinations. (thanks to Alexey Dejneka)
4683 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4684 that superficially look like logical namestrings correctly.
4685 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4687 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4688 default supplied-p) for &optional and &key arguments. (thanks to
4691 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4692 * incompatible change: The compiler is now less aggressive about
4693 tail call optimization, doing it only when (> SPACE DEBUG) or
4694 (> SPEED DEBUG). (This is an incompatible change because there are
4695 programs which relied on the old CMU-CL-style behavior to optimize
4696 away their unbounded recursion which will now die of stack overflow.)
4697 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4698 for non-GENCGC systems has been increased to 20M (since that
4699 seems much closer to the likely performance optimum for modern
4700 systems than the old 4M value was)
4701 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4702 and *DEBUG-PRINT-LEVEL*
4703 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4704 of CMU CL's support for SPARC, and various endianness and other
4705 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4706 * new syntactic sugar for the Unix command line: --load foo.bar is now
4707 an alternate notation for --eval '(load "foo.bar")'.
4709 ** The system now detects stack overflow and handles it gracefully,
4710 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4711 optimization settings. (This is a good thing in general, and
4712 its introduction in this version should be particularly timely
4713 for anyone whose code fails because of suppression of tail
4715 ** The system now hunts for the C variable "environ" in a more
4716 devious way, to avoid segfaults when the C library version differs
4717 between compile time and run time. (thanks to Christophe Rhodes)
4718 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4719 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4720 ** The compiler no longer issues bogus style warnings for undefined
4721 classes in the same source file as the DEFCLASSes which defined
4722 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4724 ** fixes in CONDITION class precedence list for undefined function
4725 errors (thanks to Alexei Dejneka)
4726 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4727 correctly. (thanks to Dan Barlow)
4728 ** portability fixes aiming at bootstrapping under CLISP (thanks
4729 to Dave McDonald and Christophe Rhodes)
4730 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4731 ** fixes in type translation and and type inference (thanks to
4733 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4734 ** various fixes in the new ports (thanks to Dan Barlow)
4735 * several changes related to debugging:
4736 ** suppression of tail recursion, as noted above
4737 ** stack overflow detection, as noted above
4738 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4739 is now the default. (For some time encapsulation has been more
4740 reliable than the breakpoint-based :ENCAPSULATE NIL
4741 implementation, at least on X86 systems; and I just noticed that
4742 encapsulation also seems closer to the spirit of the ANSI
4745 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4747 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4748 up properly again. (There was a packaging bug in 0.7.0 which
4749 left their definitions in SB-SYS::LOAD-FOREIGN and
4750 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4751 vital for most things which interface to C-level interfaces,
4752 like extensions working with sockets or databases or
4753 Perl-compatible regexes or whatever, and the need to fix
4754 this bug is the main reason that 0.7.1 was released so
4756 ** DEFGENERIC is now choosier about the methods it redefines, so that
4757 reLOADing a previously-LOADed file containing DEFGENERICs does
4758 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4759 cycle now works as it should. (thanks to Alexey Dejneka)
4760 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4761 fixed by Christophe Rhodes. (He actually submitted this patch
4762 months ago, and I delayed until after 0.7.0.)
4763 ** Bug 111 (internal compiler confusion about runtime checks on
4764 FUNCTION types) was fixed by Alexey Dejneka.
4765 * Some internal cleanups (getting rid of variables which aren't
4766 needed now that the byte interpreter is gone) caused the fasl
4767 file format number to change again.
4769 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4770 * major incompatible change: The default fasl file extension, i.e. the
4771 default extension for files produced by COMPILE-FILE, has changed
4772 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4774 ** There are many changes in the implementation of the compiler.
4775 SBCL is now essentially a compiler-only implementation of ANSI
4776 Common Lisp. EVAL still "interprets" a few special cases, but
4777 almost all the interesting cases are handled by creating
4778 a LAMBDA expression, calling COMPILE on it, then calling
4779 FUNCALL on the result.
4780 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4781 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4782 Since the code is newer, there might still be some new bugs
4783 (though not as many as before Martin Atzmueller's fixes:-). But
4784 the new code is substantially simpler and clearer, and hopefully
4785 any remaining bugs will be simpler, less fundamental, and more
4786 fixable then the bugs in the old code.
4787 ** The revised compiler is still a little unsteady on its feet.
4789 *** The debugging information it produces (particularly the names
4790 of FUNCTION objects) is sometimes much less useful than what
4791 the old compiler produced.
4792 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4793 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4794 within a MACROLET) has been temporarily weakened.
4795 ** There are new compiler optimizations for various functions:
4796 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4797 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4798 *** the math functions TRUNCATE, FLOOR, and CEILING
4799 *** the function-of-all-trades COERCE
4800 Mostly these should be transparent, but there's one
4801 potentially-annoying problem (bug 117): when the compiler
4802 inline-expands a function and does type analysis on the result,
4803 it can create control paths which have type mismatches, and
4804 when it can't prove that those control paths aren't taken,
4805 it will issue WARNINGs about the type mismatches. This is
4806 a particular problem in practice for the new sequence functions.
4807 It's not clear how this should be fixed, and for now, a
4808 workaround is given in the entry for 117 in the BUGS file.
4809 ** (Because of the interaction between the two previous items --
4810 occasional inlining problems and new inline expansions -- some
4811 of the new sequence function optimizations won't really kick in
4812 completely until debugging information, and then inlining, are
4813 straightened out in some future version.)
4814 * minor incompatible changes:
4815 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4816 DIRECTORY no longer implicitly promotes NIL slots of its
4817 pathname argument to :WILD. In particular, when you ask for the
4818 contents of a directory (which you used to be able to do without
4819 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4820 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4821 ** changes in behavior that ANSI explicitly defines to be
4822 implementation dependent:
4823 *** The new compiler-only implementation still conforms with ANSI,
4824 but acts a little different than before. Besides the obvious
4825 changes in performance tradeoffs (that the cost per form passed
4826 to EVAL has gone up, and the cost per form executed by EVAL
4827 has gone down), the behavior of the system changes a little
4828 because there are no longer any interpreted function objects.
4829 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4830 e.g. doing COMPILE on the output of interactive DEFUN is
4832 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4834 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4835 has changed from (:CL) to NIL.
4836 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4837 e.g. #\Newline and #\Tab, don't have names specified in the
4838 ANSI Common Lisp standard, is now based on their ASCII symbolic
4839 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4840 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4841 are no longer used for output.
4842 ** changes in internal implementation constants:
4843 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4844 4 million. (If your application spends a lot of time GCing and
4845 you have a lot of RAM, you might want to experiment with
4846 increasing it even more.)
4847 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4848 However, almost all old code should still continue to work without
4849 immediate update, as SB-C-CALL is now a (deprecated) nickname
4851 ** Old operator names in the style DEF-FOO are now deprecated in
4852 favor of new corresponding names DEFINE-FOO, for consistency with
4853 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4854 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4855 internal symbols, but a few supported extensions like
4856 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4857 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4858 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4859 etc. as you get deeper into recursive calls to the debugger
4860 command loop, instead of the old "5]", "5]]", "5]]]"
4861 sequence. (I was motivated to do this when squabbles between
4862 ILISP and SBCL left me very deeply nested in the debugger. In the
4863 short term, this change will probably provoke more ILISP/SBCL
4864 squabbles, but hopefully it will be an improvement in the long run.)
4865 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4866 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4867 function, since declaiming return types involving aliens is
4868 (1) annoyingly messy to do by hand and (2) vital to efficient
4869 compilation of code which calls such functions.
4870 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4871 longer reexported by the SB-EXT package. They're solely useful
4872 for alien code, so it seems more logical that you should get
4873 them from the SB-ALIEN package, not in SB-EXT.
4874 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4875 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4876 features. Instead, the code that they used to control is always
4877 built into the system.
4878 * many other bug fixes
4879 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4880 advantage of the new EVAL-WHEN stuff and to clean them up in
4881 general, and they are now more ANSI-compliant in a number of
4882 ways. Martin Atzmueller is responsible for a lot of this.
4883 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4885 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4886 *** correct ERROR type for various file operations
4887 *** some fixes for Lisp streams
4888 *** DEFMETHOD syntax checking
4889 *** changing old weird representation of debug information as
4890 strings (which, among their other deficiencies, don't transform
4891 correctly when you rename packages, and don't change their
4892 print representation when you change things like *PACKAGE*
4893 and *PRINT-LENGTH*) to symbols and lists of symbols
4894 He also made several improvements and fixed several bugs in DESCRIBE.
4895 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4897 *** misbehavior of WRITE-STRING/WRITE-LINE
4898 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4899 and several other LOOP problems as well
4900 *** DIRECTORY when similar filenames are present
4901 *** DEFGENERIC with :METHOD options
4902 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4903 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4904 *** argument ordering in FIND with :TEST option
4905 *** mishandled package designator argument in APROPOS-LIST
4906 *** various problems in the backquote readmacro
4907 *** a bug in APROPOS
4908 *** probably some others that I'm not describing very well here,
4909 since the CVS log documents them by reference to sbcl-devel
4910 messages, and the SourceForge archives aren't working well.:-(
4911 ** Dan Barlow improved the Alpha port (and is making progress on the
4912 PPC port, for those of you who think different).
4913 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4914 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4915 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4916 continues to work on the SPARC port (for those of you in a position
4917 to look down upon our little PC-compatible boxes from a great height).
4918 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4919 and uses that copy, rather than the current dynamic value, when
4920 it's trying to decide whether to truncate output. Thus e.g.
4921 (let ((*print-lines* 50))
4922 (pprint-logical-block (stream nil)
4924 (let ((*print-lines* 8))
4925 (print (aref possiblybigthings i) stream)))))
4926 should now truncate the logical block only at 50 lines, instead of
4927 often truncating it at 8 lines, as it did before.
4928 * The doc/cmucl/ directory, containing old CMU CL documentation
4929 from the time of the fork, is no longer part of the base system.
4930 SourceForge has shut down its anonymous FTP service, and with it
4931 my original plan for distributing the old CMU CL documentation
4932 there. For now, if you need these files you can download an old
4933 SBCL source release and extract them from it.
4934 * The fasl file version number changed again, for dozens of reasons,
4935 some of which are apparent above.
4937 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4938 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4939 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4940 patch, so that DISASSEMBLE output is much nicer.
4941 * The code in the SB-PROFILE package now seems reasonably stable.
4942 I still haven't decided what the final interface should look like
4943 (I'd like PROFILE to interact cleanly with TRACE, since both
4944 facilities use function encapsulation) but if you have a need
4945 for profiling now, you can probably use it successfully with
4946 the current CMU-CL-style interface.
4947 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4948 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4949 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4950 link now returns the dangling link itself, and for similar
4951 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4952 link itself. (In these cases the old code signalled an error and
4953 looped endlessly, respectively.) Thus, DIRECTORY now works even
4954 in the presence of dangling and cyclic symbolic links.
4955 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4956 is now a supported extension again, since the consensus on
4957 sbcl-devel was that it can be useful for ordinary development
4958 work, not just for debugging SBCL itself.
4959 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4960 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4961 that currently-defined functions might be redefined later with
4962 different return types.
4963 * Hash tables can be printed readably, as inspired by CMU CL code
4964 of Eric Marsden and SBCL code of Martin Atzmueller.
4965 * better error handling in CLOS method combination, thanks to
4966 Martin Atzmueller porting Pierre Mai's CMU CL patches
4967 * more overflow fixes for >16Mbyte I/O buffers
4968 * A bug in READ has been fixed, so that now a single Ctrl-D
4969 character suffices to cause end-of-file on character streams.
4970 In particular, now you only need one Ctrl-D at the command
4971 line (not two) to exit SBCL.
4972 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4974 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4975 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4976 does the right thing.
4977 * The implementation of some type tests, especially for CONDITION
4978 types, is now tidier and maybe faster, due to CMU CL code
4979 originally by Douglas Crosher, ported by Martin Atzmueller.
4980 * Some math functions have been fixed, and there are new
4981 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4982 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4983 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4984 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4985 likely to be built into sbcl-0.7.0.)
4986 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4987 CL, ported to SBCL by Martin Atzmueller)
4988 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4989 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4990 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4991 * There's a new slam.sh hack to shorten the edit/compile/debug
4992 cycle for low-level changes to SBCL itself, and a new
4993 :SB-AFTER-XC-CORE target feature to control the generation of
4994 the after-xc.core file needed by slam.sh.
4995 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4996 COMPILE-FILE is no longer supported, so that now every function
4997 gets an entry point, so that block compilation looks a little
4998 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4999 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5000 returns the number of bytes consed since the system started,
5001 rather than the number consed since the first time the function
5002 was called. (The new definition parallels ANSI functions like
5003 CL:GET-INTERNAL-RUN-TIME.)
5004 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5005 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5006 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5007 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5008 * Fasl file version numbers are now independent of the target CPU,
5009 since historically most system changes which required version
5010 number changes have affected all CPUs equally. Similarly,
5011 the byte fasl file version is now equal to the ordinary
5014 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5015 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5016 is no longer recognized. I apologize for this, because it was
5017 listed in SB-EXT as a supported extension, but I found that
5018 its existing behavior was poorly specified, as well as incorrectly
5019 specified, and it looked like too much of a mess to straighten it
5020 out. I have enough on my hands trying to get ANSI stuff to work..
5021 * many patches ported from CMU CL by Martin Atzmueller, with
5022 half a dozen bug fixes in pretty-printing and the debugger, and
5023 half a dozen others elsewhere
5024 * fixed bug 13: Floating point infinities are now supported again.
5025 They might still be a little bit flaky, but thanks to bug reports
5026 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5027 as flaky as they were.
5028 * The --noprogrammer command line option is now supported. (Its
5029 behavior is slightly different in detail from what the old man
5030 page claimed it would do, but it's still appropriate under the
5031 same circumstances that the man page talks about.)
5032 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5033 are now supported, and enabled by default. Thus, the compiler can
5034 handle many floating point and complex operations much less
5035 inefficiently. (Thus e.g. you can implement a complex FFT
5037 * The compiler now detects type mismatches between DECLAIM FTYPE
5038 and DEFUN better, and implements CHECK-TYPE more correctly, and
5039 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5040 thanks to patches from Martin Atzmueller.
5041 * various fixes to make the cross-compiler more portable to
5042 ANSI-conforming-but-different cross-compilation hosts (notably
5043 Lispworks for Windows, following bug reports from Arthur Lemmens)
5044 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5045 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5046 fixed thanks to Pierre Mai's CMU CL patches.
5047 * fixes to keep the system from overflowing internal counters when
5048 it tries to use i/o buffers larger than 16M bytes
5049 * fixed bug 45a: Various internal functions required to support
5050 complex special functions have been merged from CMU CL sources.
5051 (When I was first setting up SBCL, I misunderstood a compile-time
5052 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5053 * improved support for type intersection and union, fixing bug 12
5054 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5055 more obscure bugs as well
5056 * some steps toward byte-compiling non-performance-critical
5057 parts of the system, courtesy of patches from Martin Atzmueller
5058 * Christophe Rhodes has made some debian packages of sbcl at
5059 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5060 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5061 stable, but are nonetheless usable. When he's ready, I'd be happy
5062 to add them to the SourceForge "File Releases" section. (And if
5063 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5064 * new fasl file format version number (because of changes in
5065 internal representation of (OR ..) types to accommodate the new
5066 support for (AND ..) types, among other things)
5068 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5069 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5071 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5073 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5074 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5075 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5076 * DESCRIBE now works on structure objects again.
5077 * Most function call argument type mismatches are now handled as
5078 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5079 know whether the function will be redefined before the call is
5080 executed. (The compiler could flag local calls with full WARNINGs,
5081 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5082 it doesn't keep track of enough information to know whether calls
5083 are local in this sense.)
5084 * Compiler output is now more verbose, with messages truncated
5085 later than before. (There should be some supported way for users
5086 to override the default verbosity, but I haven't decided how to
5087 provide it yet, so this behavior is still controlled by the internal
5088 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5089 src/compiler/ir1util.lisp.)
5090 * Fasl file format version numbers have increased again, because
5091 support for the Gray streams extension changes the layout of the
5092 system's STREAM objects.
5093 * The Gray subclassable streams extension now works, thanks to a
5094 patch from Martin Atzmueller.
5095 * The full LOAD-FOREIGN extension (not just the primitive
5096 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5097 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5098 but like most other programs, it defaults to copying the Unix
5099 environment from the original process instead of starting the
5100 new process in an empty environment.
5101 * Extensions which manipulate the Unix environment now support
5102 an :ENVIRONMENT keyword option which doesn't smash case or
5103 do other bad things. The CMU-CL-style :ENV option is retained
5104 for porting convenience.
5105 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5106 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5108 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5110 * A patch from Martin Atzmueller seems to have solved the SIGINT
5111 problem, and as far as we know, signal-handling now works cleanly.
5112 (If you find any new bugs, please report them!)
5113 * The system no longer defaults Lisp source file names to types
5114 ".l", ".cl", or ".lsp", but only to ".lisp".
5115 * The compiler no longer uses special default file extensions for
5116 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5117 seems to expect a single default extension for all compiled code,
5118 and there's no compelling reason to try to stretch the standard
5119 to allow two different extensions.) Instead, byte-compiled files
5120 default to the same extension as native-compiled files.
5121 * Fasl file format version numbers have increased again, because
5122 a rearrangement of internal implementation packages made some
5123 dumped symbols in old fasl files unreadable in new cores.
5124 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5125 many fewer weird special cases.
5126 * Bug #17 (differing COMPILE-FILE behavior between logical and
5127 physical pathnames) has been fixed, and some related misbehavior too,
5128 thanks to a patch from Martin Atzmueller.
5129 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5130 by Tim Moore, ported to SBCL by Martin Atzmueller.
5131 * Martin Atzmueller fixed several filesystem-related problems,
5132 including bug #36, in part by porting CMU CL patches, which were
5133 written in part by Paul Werkowski.
5134 * More compiler warnings in src/runtime/ are gone, thanks to
5135 more patches from Martin Atzmueller.
5136 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5139 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5141 * DESCRIBE now works on CONDITION objects.
5142 * The debugger now handles errors which arise when trying to print
5143 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5145 * The build system now uses an additional file, customize-target-features.lisp,
5146 to allow local modifications to the target *FEATURES* list. (The point of
5147 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5148 debugging features enabled, without having to worry about propagating it
5149 into everyone's system when I do a "cvs update".) When no
5150 customize-target-features.lisp file exists, the target *FEATURES* list
5151 should be constructed the same way as before.
5152 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5153 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5154 warn about behavior which is undefined under the ANSI spec. Note: This
5155 is specified by ANSI, but it's not very popular with programmers.
5156 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5157 macro in the SBCL sources for an example of a workaround which you
5158 might use to make portable ANSI-standard code which does what you want.
5159 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5160 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5161 when it's used as a non-toplevel form. (This is required in order
5162 to implement the DEFCONSTANT-EQX macro.)
5163 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5164 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5165 funny things, due to bugs in the implementation of EVAL-WHEN
5166 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5167 non-toplevel DEFCONSTANTs are uncommon.)
5168 * The core file version number and fasl file version number have been
5169 incremented, because the old noncompliant DEFCONSTANT behavior involved
5170 calling functions which no longer exist, and because I also took the
5171 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5172 * fixed bug 1 (error handling before read-eval-print loop starts), and
5173 redid debugger restarts and related debugger commands somewhat while
5175 ** The QUIT debugger command is gone, since it did something
5176 rather different than the SB-EXT:QUIT command, and since it never
5177 worked properly outside the main toplevel read/eval/print loop.
5178 Invoking the new TOPLEVEL restart provides the same functionality.
5179 ** The GO debugger command is also gone, since you can just invoke
5180 the CONTINUE restart directly instead.
5181 ** The TOP debugger command is also gone, since it's redundant with the
5182 FRAME 0 command, and since it interfered with abbreviations for the
5184 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5186 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5187 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5188 some porting work by Martin Atzmueller)
5189 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5190 with a boatload of patches which he ported to SBCL. Now that those
5192 ** The system tries to make sure that its low-priority messages
5193 are prefixed by semicolons, to help people who like to use
5194 syntax highlighting in their ILISP buffer. (This patch
5195 was originally due to Raymond Toy.)
5196 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5197 patches originally written by Raymond Toy.
5198 ** The compiler understands coercion between single-value and
5199 multiple-VALUES type expressions better, getting rid of some very
5200 weird behavior, thanks to patches originally by Robert MacLachlan
5201 and Douglas Crosher.
5202 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5203 lambda lists, thanks to a patch originally by Pierre Mai.
5204 ** The system no longer bogusly warns about "abbreviated type
5206 ** The compiler gets less confused by inlining and RETURN-FROM,
5207 thanks to some patches originally by Tim Moore.
5208 ** The system no longer hangs when dumping circular lists to fasl
5209 files, thanks to a patch originally from Douglas Crosher.
5210 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5211 undefined function error.
5212 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5213 in structure slot initforms) for now, documented workaround instead:-|
5214 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5215 * fixed bug 5: added stubs for various Gray stream functions called
5216 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5217 installed, at least appropriate type errors are generated
5218 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5219 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5220 consistently in DEFMETHOD forms.
5221 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5222 it doesn't seem to affect SBCL after all
5223 * The C runtime system now builds with better optimization and many
5224 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5226 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5228 * The system is now under CVS at SourceForge (instead of the
5229 CVS repository on my home machine).
5230 * The new signal handling code has been tweaked to treat register
5231 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5232 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5233 downstream, e.g. in debug-int.lisp, has implicit dependencies
5234 on the unsignedness of integer representation of machine words,
5235 and that caused the system to bomb out with infinite regress
5236 when trying to recover from type errors involving signed values,
5237 e.g. (BUTLAST '(1 2 3) -1).)
5238 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5239 (This was one of the bugs Peter Van Eynde reported back in July.)
5240 * The system now uses code inspired by Colin Walters' O(N)
5241 implementation of MAP (from the cmucl-imp@cons.org mailing
5242 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5243 inline the MAP operation, and there is more than one
5244 sequence argument to the MAP call (so that it can't just
5245 do ETYPECASE once and for all based on the type of the
5246 single sequence argument). (The old non-inline implementation
5247 of the general M-argument sequence-of-length-N case required
5248 O(M*N*N) time when any of the sequence arguments were LISTs.)
5249 * The QUIT :UNIX-CODE keyword argument has been renamed to
5250 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5251 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5253 * Raymond Wiker's patches to port dynamic loading from Linux to
5254 FreeBSD have been added.
5255 * The BUGS file is now more nearly up to date, thanks in large part
5256 to Martin Atzmueller's review of it.
5257 * The debugger now flushes standard output streams before it begins
5258 its output ("debugger invoked" and so forth).
5259 * The core version number and fasl file version number have both
5260 been incremented, because of incompatible changes in the layout
5262 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5263 used to not be called for a saved Lisp image.)
5264 * Martin Atzmueller's version of a patch to fix a compiler crash,
5265 as posted on sbcl-devel 13 September 2000, has been installed.
5266 * Instead of installing Martin Atzmueller's patch for the
5267 compiler transform for SUBSEQ, I deleted the compiler transform,
5268 and transforms for some similar consing operations.
5269 * A bug in signal handling which kept TRACE from working on OpenBSD
5271 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5272 away by constant folding
5273 * The system now defines its address space constants in one place
5274 (in the Lisp sources), and propagates them automatically elsewhere
5275 (through GENESIS and the sbcl.h file). Therefore, patching the
5276 address map is less unnecessarily tedious and error-prone. The
5277 Lisp names of address space constants have also been systematized.
5278 * CVS tags like dollar-Header-dollar have been removed from
5279 the sources, because they have never saved me trouble and
5280 they've been source of trouble working with patches and other
5281 diff-related operations.
5282 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5283 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5285 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5287 * The system has been ported to OpenBSD.
5288 * The system now compiles with a simple "sh make.sh" on the systems
5289 that it's supported on. I.e., now you no longer need to tweak
5290 text in the target-features.lisp-expr and symlinks in src/runtime/
5291 by hand, the make.sh takes care of it for you.
5292 * The system is no longer so grossly inefficient when compiling code
5293 involving vectors implemented as general (not simple) vectors (VECTOR T),
5294 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5295 which dares to use the various sequence functions on non-simple
5296 vectors, takes less of a performance hit.
5297 * There is now a primitive type predicate VECTOR-T-P
5298 to test for the (VECTOR T) type, so that e.g.
5299 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5300 can now be compiled with some semblance of efficiency. (The old code
5301 turned the type declaration into a full call to %TYPEP at runtime!)
5302 * AREF on (VECTOR T) is still not fast, since it's still compiled
5303 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5304 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5305 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5306 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5307 without making full calls to SUBTYPEP at runtime.
5308 (Some analogous efficiency issues for non-simple vectors specialized to
5309 element types other than T, or for non-simple multidimensional arrays,
5310 have not been addressed. They could almost certainly be handled the
5311 same way if anyone is motivated to do so.)
5312 * The changes in array handling break binary compatibility, so
5313 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5314 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5315 instead of (VALUES T T).
5316 * By following the instructions that Dan Barlow posted to sbcl-devel
5317 on 2 July 2000, I was able to enable primitive dynamic object
5318 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5319 functionality is not implemented (since it calls ld to resolve
5320 library references automatically, requiring RUN-PROGRAM for its
5321 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5322 try to resolve library references) is now supported.
5323 * The system now flushes the standard output streams when it terminates,
5324 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5325 them at several other probably-convenient times, e.g. in each pass of
5326 the toplevel read-eval-print loop, and after evaluating a form given
5327 as an "--eval" command-line option. (These changes were motivated by a
5328 discussion of stream flushing issues on cmucl-imp in August 2000.)
5329 * The source transform for TYPEP of array types no longer assumes
5330 that an array whose element type is a not-yet-defined type
5331 is implemented as an array of T, but instead punts, so that the
5332 type will be interpreted at runtime.
5333 * There is now some support for cross-compiling in make.sh: each of
5334 the phases of make.sh has its own script. (This should be transparent
5335 to people doing ordinary, non-cross-compile builds.)
5336 * Since my laptop doesn't have hundreds of megabytes of memory like
5337 my desktop machine, I became more motivated to do some items on
5338 my to-do list in order to reduce the size of the system a little:
5339 ** Arrange for various needed-only-at-cold-init things to be
5340 uninterned after cold init. To support this, those things have
5341 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5342 symbols with such names are now uninterned after cold init).
5343 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5344 fasl files for cold load.
5345 ** Remove the old compiler structure pooling code (which used to
5346 be conditional on the target feature :SB-ALLOC) completely.
5347 ** Redo the representation of some data in cold init to be more compact.
5348 (I also looked into supporting byte compiled code at bootstrap time,
5349 which would probably reduce the size of the system a lot, but that
5350 looked too complicated, so I punted for now.)
5351 * The maximum signal nesting depth in the src/runtime/ support code has
5352 been reduced from 4096 to 256. (I don't know any reason for the very
5353 large old value. If the new smaller value turns out to break something,
5354 I'll probably just bump it back up.)
5355 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5357 * Many, many bugs reported by Peter Van Eynde have been added to
5358 the BUGS list; some have even been fixed.
5359 * While enabling dynamic object file loading, I tried to make the
5360 code easier to understand, renaming various functions and variables
5361 with less ambiguous names, and changing some function calling
5362 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5363 * While trying to figure out how to do the OpenBSD port, I tried to
5364 clean up some of the code in src/runtime/. In particular, I dropped
5365 support for non-POSIX signal handling, added various comments,
5366 tweaked the code to reduce the number of compilation warnings, and
5367 renamed some files to increase consistency.
5368 * To support the new automatic configuration functionality in make.sh,
5369 the source file target-features.lisp-expr has been replaced with the
5370 source file base-target-features.lisp-expr and the machine-generated
5371 file local-target-features.lisp-expr.
5372 * fixed a stupid quoting error in make.sh so that using CMU CL
5373 "lisp -batch" as cross-compilation host works again
5375 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5377 * DESCRIBE no longer tries to call itself recursively to describe
5378 bound/fbound values, so that it no longer fails on symbols which are
5379 bound to themselves (like keywords, T, and NIL).
5380 * DESCRIBE now works on generic functions.
5381 * The printer now prints less-screwed-up representations of closures
5382 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5383 * A private symbol is used instead of the :EMPTY keyword previously
5384 used to mark empty slots in hash tables. Thus
5385 (DEFVAR *HT* (MAKE-HASH-TABLE))
5386 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5387 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5388 now does what ANSI says that it should. (You can still get
5389 similar noncompliant behavior if bang on the hash table
5390 implementation with all the symbols you get back from
5391 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5392 This breaks binary compatibility, since tests for equality to
5393 :EMPTY are wired into things like the macroexpansion of
5394 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5396 * There's now a minimal placeholder implementation for CL:STEP,
5397 as required by ANSI.
5398 * An obscure bug in the interaction of the normal compiler, the byte
5399 compiler, inlining, and structure predicates has been patched
5400 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5401 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5403 * Missing ordinary arguments in a macro call are now detected even
5404 when the macro lambda list contains &KEY or &REST.
5405 * The debugger no longer complains about encountering the top of the
5406 stack when you type "FRAME 0" to explicitly instruct it to go to
5407 the top of the stack. And it now prints the frame you request even
5408 if it's the current frame (instead of saying "You are here.").
5409 * As specified by ANSI, the system now always prints keywords
5410 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5412 * The default initial SIZE of HASH-TABLEs is now smaller.
5413 * Type information from CLOS class dispatch is now propagated
5414 into DEFMETHOD bodies, so that e.g.
5415 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5417 is now basically equivalent to
5418 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5419 (DECLARE (TYPE SINGLE-FLOAT X))
5421 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5422 operation, without having to do run-time type dispatch.
5423 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5424 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5425 * Since I don't seem to be making big file reorganizations very often
5426 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5427 is overflowing my ability to conveniently back them up), I've finally
5428 checked the system into CVS. (The CVS repository is on my home system,
5429 not at SourceForge -- putting it on SourceForge might come later.)
5430 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5431 high-level GC-NOTIFY-FOO functions send their output. (There's
5432 still very little control of where low-level verbose GC functions
5433 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5434 less than it used to -- the GC-NOTIFY-FOO functions are now under
5435 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5436 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5437 in only one place in the source code, and propagates it automatically
5438 everywhere that it's needed. Thus e.g. when I bump the version from
5439 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5440 * The C source files now include boilerplate legalese and documentation
5441 at the head of each file (just as the Lisp source files already did).
5442 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5443 to his page will be replaced with a link to his new CLiki service.
5445 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5447 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5448 * The build process now looks for GNU make under the default name "gmake",
5449 instead of "make" as it used to. If GNU make is not available as "gmake"
5450 on your system, you can change this default behavior by setting the
5451 GNUMAKE environment variable.
5452 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5453 can build without error under CMU CL.
5455 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5457 * There is now a partial SBCL user manual (with some new text and some
5458 text cribbed from the CMU CL manual).
5459 * The beginnings of a profiler have been added (starting with the
5460 CMU CL profiler and simplifying and cleaning up). Eventually the
5461 main interface should be through the TRACE macro, but for now,
5462 it's still accessed through vaguely CMU-CL-style functions and macros
5463 exported from the package SB-PROFILE.
5464 * Some problems left over from porting CMU CL to the new
5465 cross-compilation bootstrap process have been cleaned up:
5466 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5467 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5468 part when getting rid of the compiler *BACKEND* stuff.)
5469 ** The value of *NULL-TYPE* was screwed up, because it was
5470 being initialized before the type system knew the final
5471 definition of the 'NULL type. This screwed up several key
5472 optimizations in the compiler, causing inefficiency in all sorts
5473 of places. (I found it because I wanted to understand why
5474 GET-INTERNAL-RUN-TIME was consing.)
5475 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5476 PROCLAIM FTYPE information. Unfortunately this broke binary
5477 compatibility again, since now the forms output by DEFGENERIC
5478 to refer to functions which didn't exist in 0.6.3.
5479 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5480 can use the new (as of 0.6.3) transform for SOME into MAP into
5482 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5483 values to (INTEGER 0 1000000), so that the time code will no longer
5484 occasionally get blown up by Linux returning 1000000 microseconds
5485 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5486 its output conform to the ANSI spec. (Alas, this makes its output
5487 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5488 * A full call to MAP NIL with a single sequence argument no longer conses.
5489 * fixes to problems pointed out by Martin Atzmueller:
5490 * The manual page no longer talks about multiprocessing as though
5491 it were currently supported.
5492 * The ILISP support patches have been removed from the distribution,
5493 because as of version 5.10.1, ILISP now supports SBCL without us
5494 having to maintain patches.
5495 * added a modified version of Raymond Toy's recent CMU CL patch for
5496 EQUALP comparison of HASH-TABLE
5498 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5500 * The system still can't cross-compile itself with
5501 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5502 entails), but at least it can compile more of itself that way
5503 than it used to be able to, and various buglets which were uncovered
5504 by trying to cross-compile itself that way have now been fixed.
5505 * This release breaks binary compatibility again. This time
5506 at least I've incremented the FASL file format version to 2, so that the
5507 problem can be detected reliably instead of just causing weird errors.
5508 * various new style warnings:
5509 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5510 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5511 ** using the lexical binding of a variable named in the *FOO* style
5512 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5513 as specified by ANSI.
5514 * *RANDOM-STATE* is no longer automatically initialized from
5515 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5516 default behavior of the system is to repeat its behavior every time
5517 it's run. If you'd like to change this behavior, you can always
5518 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5519 old convention there was no comparably easy way to get the system to
5520 repeat its behavior every time it was run.
5521 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5522 FTYPE declarations has been removed, in favor of their ANSI
5523 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5524 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5525 the types of their sequence arguments can be determined at compile time.
5526 This is done through a new open code expansion for MAP which eliminates
5527 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5528 argument types can be determined at compile time.
5529 * The optimizer now transforms COERCE into an identity operation when it
5530 can prove that the coerced object is already of the correct type. (This
5531 can be a win for machine generated code, including the output of other
5532 optimization transforms, such as the MAP transform above.)
5533 * Credit information has been moved from source file headers into CREDITS.
5534 * Source file headers have been made more standard.
5535 * The CASE macro now compiles without complaining even when it has
5538 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5540 * (Note that the way that the PCL macroexpansions were rewritten
5541 to accommodate the change in DEFGENERIC below breaks binary
5542 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5543 not run under sbcl-0.6.2. Once we get out of alpha releases,
5544 i.e. hit release 1.0.0, we'll probably try to maintain binary
5545 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5546 and sbcl-1.4.4. Until then, however, it might be fairly common
5547 for maintenance releases to break binary compatibility.)
5548 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5550 * The reporting of unhandled signals has been changed to print some
5551 explanatory text as well as the report form. (Previously only
5552 the report form was printed.)
5553 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5554 it defines, so that the compiler no longer issues undefined function
5555 warnings for compiled-but-not-yet-loaded generic functions.
5556 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5557 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5558 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5559 section of the ANSI spec are supported.
5560 * The "" nickname for the "KEYWORD" package has been removed.
5561 The reader still handles symbol tokens which begin with a package marker
5562 as keywords, but it doesn't expose its mechanism for doing so in the
5563 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5564 * The system now issues STYLE-WARNINGs for contradictory TYPE
5565 proclamations. (Warnings for contradictory FTYPE proclamations would
5566 be nice too, but those can't be done usefully unless the type system
5567 is made smarter about FUNCTION types.)
5568 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5569 systematized, so that "*target-*.lisp is supposed to exist only on the
5570 target and imply that there's a related file which exists on the
5571 host, and *host-*.lisp is supposed to exist only on the host and imply
5572 that there's a related file which exists on the target. This involves a
5573 lot of renaming. Hopefully the acute confusion caused by the renaming
5574 will be justified by the reduction in chronic confusion..
5575 ** runtime-type.lisp -> early-target-type.lisp
5576 ** target-type.lisp -> late-target-type.lisp
5577 ** early-host-format.lisp -> early-format.lisp
5578 ** late-host-format.lisp -> late-format.lisp
5579 ** host-error.lisp -> misc-error.lisp
5580 ** early-error.lisp -> early-target-error.lisp
5581 ** late-error.lisp -> late-target-error.lisp
5582 ** host-defboot.lisp -> early-defboot.lisp
5583 ** code/misc.lisp -> code/target-misc.lisp
5584 ** code/host-misc.lisp -> code/misc.lisp
5585 ** code/numbers.lisp -> code/target-numbers.lisp
5586 ** code/early-numbers.lisp -> numbers.lisp
5587 ** early-host-type.lisp -> early-type.lisp
5588 ** late-host-type.lisp -> late-type.lisp
5589 ** host-typep.lisp -> typep.lisp
5590 ** load.lisp -> target-load.lisp
5591 ** host-load.lisp -> load.lisp
5592 ** host-disassem.lisp -> disassem.lisp
5593 ** host-insts.lisp -> insts.lisp
5594 ** byte-comp.lisp -> target-byte-comp.lisp
5595 ** host-byte-comp.lisp -> byte-comp.lisp
5596 ** host-signal.lisp -> signal.lisp
5597 ** host-defstruct.lisp -> defstruct.lisp
5598 ** late-target-type.lisp -> deftypes-for-target.lisp
5599 Furthermore, several other previously target-only files foo.lisp (e.g.
5600 hash-table.lisp and random.lisp) have been split into a target-and-host
5601 foo.lisp file and a target-only target-foo.lisp file, with their key type
5602 definitions in the target-and-host part, so that the cross-compiler will
5603 know more about target types.
5604 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5605 gone away. In their place are various *BACKEND-FOO* variables
5606 corresponding to the slots of the old structure.
5607 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5608 into the target SBCL has been fixed.
5609 * The chill.lisp system for loading cold code into a running SBCL
5611 * Support for the CMU CL "scavenger hook" extension has been removed.
5612 (It was undocumented and unused in the CMU CL sources that SBCL was
5613 derived from, and stale in sbcl-0.6.1.)
5614 * Various errors in the cross-compiler type system were detected
5615 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5616 (enabling various consistency checks). Many of them were fixed,
5617 but some hard problems remain, so the compiler is back to
5618 running without *TYPE-SYSTEM-INITIALIZED* for now.
5619 * As part of the cross-compiler type system cleanup, I implemented
5620 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5621 * I have started adding UNCROSS calls throughout the type system
5622 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5623 on cross-compiler input files will be able to go away, and various
5625 * CONSTANTP now returns true for quoted forms (as explicitly required
5628 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5630 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5631 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5632 (MAKE-LIST -1). In the longer term, it ought to become true
5633 that declarations are assertions even at SAFETY 1. For now, it's not
5634 quite true even at SAFETY 3, but it's at least more nearly true..
5635 (Note that this change seems to increases the size of the system by
5636 O(5%) and to decrease the speed of the compiler by 20% or more.)
5637 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5638 for the problem of printing dozens of lines of distracting information
5639 about low-level system machinery as part of the top stack frame
5640 on entry to the debugger when an undefined function was called.
5641 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5642 is not reset to COMMON-LISP-USER.
5643 * Compilation of stuff related to dyncount.lisp has been made conditional
5644 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5645 smaller. The various dyncount-related symbols have been moved into
5646 a new "SB-DYNCOUNT" package.
5647 * tty-inspect.lisp has been renamed to inspect.lisp.
5648 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5649 feature has gone away. (When we eventually port to other flavors of
5650 libc and/or Unix, we'll try to make the differences between flavors
5651 invisible at the user level.)
5652 * Various other *FEATURES* tags, and/or their associated conditionals,
5653 have been removed if obsolescent, or given better documentation, or
5654 sometimes given more-mnemonic names.
5656 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5658 * tidied up "make.sh" script
5659 * tidied up system directory structure
5660 * better "clean.sh" behavior
5661 * added doc/FOR-CMUCL-DEVELOPERS
5662 * many many small tweaks to output format, e.g. removing possibly-confusing
5663 trailing #\. character in DESCRIBE-INSTANCE
5664 * (EQUALP #\A 'A) no longer signals an error.
5665 * new hashing code, including EQUALP hashing
5666 * tidied up Lisp initialization and toplevel
5667 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5668 * command line argument processing
5669 * added POSIX-GETENV function to deal with Unix-ish environment variables
5670 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5671 terminating SBCL on EOF
5672 * non-verbose GC by default
5673 * There is no more "sbcl" shell script; the sbcl file is now the C
5674 runtime executable (just like CMU CL).
5675 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5677 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5678 symbol and package information as Lisp native symbol and package objects
5679 instead of strings naming symbols and strings naming packages. This way,
5680 whenever packages are renamed (as in warm init), debug information is
5681 transformed along with everything else.
5682 * tweaked the optimization policy declarations which control the building
5683 of SBCL itself. Now, among other things, the system no longer saves
5684 source location debugging information. (This helps two problems at once
5685 by reducing SBCL size and by keeping SBCL from trying to look for its
5686 sources -- which may not exist -- when reporting errors.)
5687 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5688 debugging and testing purposes
5689 * cleaned up printing, making the printer call PRINT-OBJECT for
5690 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5691 methods, giving nearly-ANSI behavior
5692 * converted almost all special variables to use *FOO* naming convention
5693 * deleted PARSE-TIME functionality, since it can be done portably
5694 * moved some files out of cold init into warm init
5695 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5697 * regularized formatting of source files
5698 * added an install.sh script
5699 * fixed ridiculous memory usage of cross-compiler by making
5700 compiler/alloc.lisp not try to do pooling unless it can hook
5701 itself into the GC of the cross-compilation host. Now the system
5702 builds nicely on my old laptop.
5703 * added :SB-ALLOC in target-features.lisp-expr
5704 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5705 was not implemented)
5706 * re-did condition handling and note reporting in the compiler. Notes
5707 are no longer handled by signalling conditions. Style warnings
5708 and warnings are handled more correctly and reported in such a way
5709 that it's easy to find one or the other in your output (so that you
5710 can e.g. figure out which of many problems caused COMPILE-FILE to
5712 * changed the severity of several compiler warnings from full WARNING
5713 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5714 compiler note reporting so that it doesn't use the condition system
5715 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5716 COMPILE-FILE command)
5717 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5718 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5719 no longer supported, since their implementation was deeply intertwingled
5720 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5721 * removed bogus "support" for compiler macros named (SETF FOO), and
5722 removed the compiler macro for SETF INFO (but only after making a fool
5723 of myself on the cmucl-imp mailing list by posting a bogus patch for
5724 DEFINE-COMPILER-MACRO..)
5725 * Compiled files containing forms which have side effects on the Lisp
5726 reader (such as DEFPACKAGE forms) are now handled more correctly.
5727 (Compiler queuing of top level lambdas has been suppressed by setting
5728 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5729 * deleted various currently-unused source files, e.g. gengc.lisp. They
5730 may be added back at some point e.g. when porting to other architectures,
5731 but until they are it's distracting to distribute them and to try to
5733 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5734 there were so many of them they're just distractions, and UNCROSS is
5735 known to be able to handle the current sources
5736 * moved PROFILE functionality into TRACE, so that it will be clear
5737 how the wrapping and unwrapping of functions when you profile them
5738 interacts with the wrapping and unwrapping of functions when you
5739 trace them. (Actually, the functionality isn't there yet, but at least
5740 the interface specification is there. Hopefully, the functionality will
5741 arrive with some future maintenance release.)
5742 * removed host-oops.lisp
5743 * changed signature of QUIT function to allow UNIX-CODE argument
5744 * fixed READ-SEQUENCE bug
5745 * tweaked verbose GC output so that it looks more like the progress
5746 output that ANSI specifies for functions like LOAD
5747 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5748 * added <http://sbcl.sourceforge.com> to the banner information printed by