1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.9.38:
3 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
5 * bug fix: linkage-table entries on PPC now no longer overflow their
6 space allocation (potentially causing crashes if they are written out
8 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
9 platforms, preventing the GC from seeing stale pointers on the control
10 stack in subsequent GCs (which would, and does, break invariants).
11 * bug fix: 32-bit unicode external formats now work on big-endian systems.
12 * bug fix: Literal characters with code points greater than about 32767
13 now work on PPC UNICODE builds.
14 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
15 high order bits are explicitly cleared out. In some contrived situations,
16 this could lead to wrong results in mixed real/complex float arithmetic.
17 * bug fix: Fix function/macro redefinition warnings when building with
18 clisp. (lp#576787, thanks to Josh Elsasser)
20 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
21 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
22 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
23 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
24 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
25 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
27 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
28 contain additional data structures and tools for concurrent programming;
29 at the moment it contains a lock-free queue, and a lock-free mailbox
31 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
32 GET-MUTEX but takes &key rather than &optional parameters. Also added
33 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
35 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
36 SB-THREAD:WAIT-ON-SEMAPHORE.
37 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
39 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
40 conditions to defer the deadline for forever.
41 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
43 * enhancement: errors from NO-APPLICABLE-METHOD and
44 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
45 generic function call.
46 * enhancement: SB-BSD-SOCKET improvements
47 ** sockets and socket streams now have a more informative printed
48 representation based on the corresponding SOCKET-NAME and
50 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
52 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
53 CL:CLOSE when appropriate, and no longer disassociates the stream
54 from the socket if close failed. (lp#543951)
55 * improvements to the instrumenting profiler
56 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
57 ** optimization: counters no longer use locks for the overflow mode.
58 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
59 incurred an off-by-one miscount.
60 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
61 * enhancement: improved DEFMETHOD pretty-printing.
62 * enhancement: perform range reduction when arguments are too large for
63 x87's transcendentals (instead of returning 0). (lp#327192)
64 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
65 some of CL-PPCRE's macros. (lp#570079)
66 * enhancement: our machine code is slightly less hostile to valgrind on
68 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
69 to Robert Swindells and Aleksej Saushev)
70 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
71 * bug fix: a rare case of startup-time page table corruption.
72 * bug fix: a semaphore with multiple waiters and some of them unwinding due
73 to timeouts could be left in an inconsistent state.
74 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
75 * bug fix: misoptimization of multiplication by one in
76 (SB-C::FLOAT-ACCURACY 0) policies.
77 * bug fix: miscounts in SB-PROFILE.
78 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
79 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
80 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
81 up itself" (March 2010) for further details.
82 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
83 against length of the list if the element is found before the specified
84 END is reached. (thanks to Alec Berryman, lp#554385)
85 * bug fix: errors signalled during package graph modification no longer
86 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
87 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
88 :SB-DOC feature. (lp#552564)
89 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
90 * bug fix: more robust runtime executable path detection. (lp#375549)
91 * bug fix: GCD always returns positive values. (lp#413680)
92 * bug fix: Converting division to multiplication by reciprocal handles
94 * bug fix: We were too eager in eliding range reduction tests on x87.
95 The maximal magnitude is 2^63, not 2^64.
96 * bug fix: Transforms for TRUNCATE don't die when the result is completely
98 * bug fix: Maybe restore buildability on Alpha.
99 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
101 * bug fix: RANDOM-STATE can be printed readably again.
102 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
103 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
104 types) could result in type mismatches during compilation.
106 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
107 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
108 stack frame thrown from.
109 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
110 compiler optimization qualities inside dynamic extent of its body.
111 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
112 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
114 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
115 constraint propgation, allowing better compilation eg. when used to
116 access structures with WITH-SLOTS. (lp#520366)
117 * optimization: the compiler is now more aware of the type of the underlying
118 storage vector for multidimensional simple arrays resulting in better code
119 for accessing such arrays.
120 * optimization: passing NIL as the environment argument to TYPEP no longer
121 inhibits optimizing it. (lp#309788)
122 * optimization: more efficient register usage when handling single-float
123 arguments on x86-64. (thanks to Lutz Euler)
124 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
125 pre-allocated temporary vectors. (lp#496249)
126 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
127 in :INITIAL-CONTENTS. (lp#523612)
128 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
129 functions. (lp#524707)
130 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
131 WITH-SLOTS usages during compilation.
132 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
133 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
134 all x86oid platforms with :UD2-BREAKPOINTS target feature.
135 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
136 instruction (tested on x86oid linux with ud2-breakpoints).
137 * bug fix: slam.sh now works on win32.
138 * bug fix: better differences of numeric types. (lp#309124)
139 * bug fix: arrays declared intersection and union types can have their
140 upgraded element type derived. (lp#316078)
141 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
142 threads started during profiling. (lp#472499)
143 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
145 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
146 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
147 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
148 values instead of signaling an error. (lp#309093)
149 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
151 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
152 declarations (lp#497321)
153 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
154 and failed to detect circular lists (lp#452008)
155 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
157 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
158 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
159 due to it, so that handlers can run.
160 * bug fix: reparsing undefined types if they have become defined since
162 * bug fix: missing &REST type in a proclamation for a function with both
163 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
164 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
165 expanded calls (lp#542174)
166 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
167 than just at toplevel form.
169 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
170 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
171 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
172 but work on type specifiers.
173 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
174 to name a type specifier.
175 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
176 specifier is valid where "valid" basically means "would be accepted as
177 second argument of TYPEP".
178 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
179 returns the function's declared, or derived FTYPE.
180 * new feature: SB-POSIX now supports accessing the d_ino member of
181 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
182 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
183 provide for seeding a RANDOM-STATE object with user-provided data or
184 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
185 attempt to initialize the returned state from the operating system's
186 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
187 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
188 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
189 * bug fix: Fix grammar and style issues for the docstrings of
190 printer-related variables and functions. (Thanks to mon_key; launchpad
192 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
194 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
195 in a row even though a handler defered the deadline long into the
197 * bug fix: A deadline handler was run without interrupts enabled for a
198 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
199 in infinitely spinning, non-killable threads.
200 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
201 before reaching the erring stack frame.
202 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
203 real power. (launchpad bug lp#525949)
204 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
205 GENCGC platforms. (launchpad bug lp#529014)
206 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
207 (launchpad bug lp#525916)
208 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
209 (Thanks to Robert Goldman)
211 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
212 * optimization: ROUND with a single single-float or double-float argument
213 is properly inlined when possible.
214 * optimization: Slightly better code is generated for integer<->float
215 conversions and for single-float<->double-float conversions on x86-64.
216 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
217 code for 32-bit and 64-bit rotations on x86-64.
218 * bug fix: The install script changes the ownership of directories as well
219 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
220 launchpad bug lp#508485)
221 * bug fix: TRUNCATE with a single single-float or double-float argument is
222 properly inlined when possible. (launchpad bug lp#489388)
223 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
224 no longer causes a compiler error on x86 and ppc.
225 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
226 always relative to *READTABLE* rather than the passed argument.
228 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
229 * minor incompatible change: threading support is now enabled by default
231 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
233 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
234 are now caught and reported just like errors during macroexpansion.
235 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
236 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
237 * enhancement: ASDF systems can now depends on SB-QUEUE.
238 * fixes and improvements related to Unicode and external formats:
239 ** bug fix: error handling and restart usage in the ucs-2 external format
241 ** there is now an implementation of the ucs-4 external format.
242 ** the utf-16 and utf-32 external formats are supported.
243 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
244 in the environment. setenv() and unsetenv() are also provided. (reported by
245 Fare Rideau; launchpad bug lp#460455)
246 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
247 loading. This ensures sensible errors for .FASL files from other
248 implementations on case-insensitive filesystems. (reported by Willem
249 Broekema; launchpad bug lp#489417)
250 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
251 Willem Broekema; launchpad bug lp#489698).
252 * bug fix: some minor code rearrangements to reenable warning-free building
253 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
254 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
256 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
259 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
260 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
261 * improvement: support O_LARGEFILE access to files larger than 2GB on
262 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
263 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
264 definitions for methods specializing on the passed class itself.
265 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
266 definitions for methods specializing on the passed class itself, or on
268 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
269 about itself during the build (e.g. for M-? in Slime), if this flag is
270 enabled in customize-target-features.lisp. This will increase the core
271 size by about 5-6mb, though, so it's mostly interesting to SBCL
273 * new feature: various GENCGC tuning parameters have been experimentally
274 documented and exported from SB-EXT. See documentation for details.
275 * fixes and improvements related to Unicode and external formats:
276 ** the Unicode character database has been upgraded to the
277 Unicode 5.2 standard, giving names and properties to a number of new
278 characters, and providing a few extra characters with case
280 ** improvement: restarts for providing replacement input/output on coding
281 errors for fd-stream external formats.
282 ** improvement: where :<encoding> is a keyword corresponding to an
283 external format the system supports, it is now possible to specify
284 (:<encoding> :replacement <character>) as an external format which will
285 automatically substitute <character> on encoding or decoding errors for
286 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
288 ** improvement: the file streams underlying the standard streams (such as
289 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
290 which uses the replacement mechanism to handle encoding errors,
291 preventing various infinite error chains and unrecoverable I/O
293 ** minor incompatible change: the utf-8 external format now correctly
294 refuses to encode Lisp characters in the surrogate range (char-codes
295 between #xd800 and #xdfff).
296 ** fix a typo preventing conversion of strings into octet vectors
297 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
299 ** fix a bug in the octet multibyte handling of decoding errors and the
300 USE-VALUE restart. (launchpad bug lp#314939)
301 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
302 restart on fd-stream decoding errors.
303 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
304 error is near the end of file.
305 ** fix a double-error case in unibyte octet conversions, when the first
306 use of USE-VALUE is ignored.
307 ** fix bugs in handling of undefined code points in unibyte encodings.
308 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
309 streams after an UNREAD-CHAR.
310 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
311 object is allocated in a boxed region of dynamic space.
312 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
313 fork with multiple Lisp threads running is made, instead of going
314 ahead with unpredictable consequences. (reported by Leslie Polzer)
315 * bug fix: uses of slot accessors on specialized method parameters within
316 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
317 error while finalizing the class. This fix may cause classes with slot
318 accessors to be finalized later than previously. (reported by Lars Rune
319 Nøstdal; launchpad bug lp#473699)
320 * bug fix: restore buildability on the MIPS platform. (regression from
321 1.0.30.38, reported by Samium Gromoff)
322 * bug fix: inspecting closures is less likely to fail with a type error.
323 * bug fix: no timer starvation when setting the system clock back.
324 (launchpad bug lp#460283)
325 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
326 standard pprint dispatch table as specified by CLHS.
327 * bug fix: give CLISP a hint about a type declaration to enable it to build
328 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
330 * bug fix: correctly dump literal objects in defaulting forms of arglists.
331 (reported by Attila Lendvai; launchpad bug lp#310132)
332 * bug fix: distinguish in type specifiers between arrays that might be
333 complex and arrays that are definitely complex. (launchpad bug lp#309129)
334 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
335 type. (reported by Levente Mészáros; launchpad bug lp#485972)
336 * bug fix: setting the value of a symbol-macro within a method in the
337 presence of type declarations works properly again. (reported by Iban
338 Hatchondo; launchpad bug lp#485019)
340 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
341 * optimization: faster FIND and POSITION on strings of unknown element type
342 in high SPEED policies. (thanks to Karol Swietlicki)
343 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
345 * improvement: better error signalling for bogus parameter specializer names
346 in DEFMETHOD forms (reported by Pluijzer)
347 * bug fix: DELETE-FILE once again works on logical pathnames (regression
349 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
351 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
352 removes previous default initargs (reported by Lars Rune Nøstdal and
354 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
355 lambda-lists. (reported by Peter Seibel)
356 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
357 correctly when starting from an executable core without saved runtime
358 options (reported by Faré Rideau, thanks to Zach Beane)
359 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
360 an optimization note instead. (reported by Martin Cracauer)
361 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
362 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
363 new process group if it doesn't need to share stdin with the sbcl
364 process. (thanks to Leslie Polzer)
365 * bug fix: SATISFIES could be misoptimized to refer to a local function.
366 (reported by Stanislaw Halik)
368 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
369 * improvement: stack allocation is should now be possible in all nested
370 inlining cases: failure to stack allocate when equivalent code is manually
371 open coded is now considered a bug.
372 * improvements related to Unicode:
373 ** the Unicode character database has been upgraded to the
374 Unicode 5.1 standard, giving names and properties to a number of new
375 characters, and providing a few extra characters with case
377 ** the system now recognizes and produces names for Unicode Hangul
379 ** the EBCDIC-US external-format is now supported for octet operations
380 (as well as for stream operations).
381 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
382 be used to output toplevel compile-time effects into a separate .CFASL
384 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
385 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
387 * optimization: TRUNCATE on known single- and double-floats is upto 25%
389 * optimization: division of floating point numbers by constants uses
390 multiplication by reciprocal when an exact reciprocal exists.
391 * optimization: multiplication of single- and double-floats floats by
392 constant two has been optimized.
393 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
394 sufficient type information is available. (thanks to Leslie Polzer)
395 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
396 known structure objects are as efficient as defstruct generated accessors.
397 * optimization: unused vector creation can now be optimized away.
398 * improvement: ASDF systems can now depends on SB-INTROSPECT.
399 * improvement: a STYLE-WARNING is signalled when a generic function
400 clobbers an earlier FTYPE proclamation.
401 * improvement: the compiler is able to track the effective type of
402 generic function across method addition and removal even in the
403 absence of an explicit DEFGENERIC.
404 * improvement: DESCRIBE now reports on symbols naming undefined
405 but assumed or declared function as well.
406 * improvement: recompilation of systems using SB-GROVEL now works
407 (thanks to Leslie Polzer)
408 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
409 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
411 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
412 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
413 well as user defined declaration names.
414 ** VARIABLE-INFORMATION is now aware of alien variables.
415 * improvement: improved address space layout on OpenBSD (thanks to Josh
417 * improvement: pretty-printing of various Lisp forms has been improved
418 (thanks to Tobias Rittweiler)
419 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
420 unused were deleted in safe code. (reported by John Fremlin)
421 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
423 * bug fix: some out-of-line array predicates were missing (reported by
425 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
427 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
428 (thanks to Larry D'Anna)
429 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
430 as well. (reported by Josh Elsasser)
431 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
432 leading to possible attempts to delete the same file twice. See docstring
433 on DELETE-FILE for details. (reported by John Fremlin)
434 * bug fix: DELETE-FILE once again deletes the file named by the pathname
435 designator argument, rather than its truename. (reported by Luis
437 * bug fix: the low-level debugger had 32-bit assumptions and was missing
438 information about some array types. (thanks to Luis Oliveira)
439 * bug fix: moderately complex combinations of inline expansions could
440 be miscompiled if the result was declared to be dynamic extent.
441 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
442 form (+ <variable> <integer>) were miscompiled under certain
444 * bug fix: in some cases no compiler note about failure to stack allocate
445 was emitted, even if the objects were in fact heap allocated.
446 * bug fix: minor violation of "otherwise inaccessible" rule for stack
447 allocation could cause objects users might reasonably expect to
448 be heap allocated to be stack allocated.
449 * bug fix: DESCRIBE signalled an error for generic functions under
450 certain circumstances. (thanks to Leslie Polzer)
451 * bug fix: Fixed spelling of an error message.
453 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
454 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
455 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
456 of SB-THREAD:THREAD-ERROR-THREAD.
457 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
458 * new feature: docstrings for local and anonymous functions are no longer
459 discarded. (thanks to Leslie Polzer)
460 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
461 values in other threads.
462 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
463 about object allocation.
464 * optimization: division of a real float by a complex float is implemented
465 with a specialised code sequence.
466 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
467 keywords is an order of magnitude faster.
468 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
469 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
470 methods, and similarly for non-standard metaclass classes as long as there
471 are no methods additional on MAKE-INSTANCE.
472 * optimization: more efficient type-checks for FIXNUMs when the value
473 is known to be a signed word on x86 and x86-64.
474 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
475 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
477 * optimization: compiler is smarter about delegating argument type checks to
479 * optimization: several character functions are now compiled somewhat more
480 efficiently. (reported by Lynn Quam)
481 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
482 * improvement: less unsafe constant folding in floating point arithmetic,
483 especially for mixed complex/real -float operations.
484 * optimization: constant double and single floats are stored in native
485 unboxed format on x86[-64].
486 * optimization: smarter code for arithmetic operations with constant floats,
487 complex floats, or integers on x86[-64].
488 * optimization: smarter code for conjugate/multiplication of float complexes
489 and abs/negate of floats on x86-64.
490 * optimization: more efficient complex float and real float operations on
492 * improvement: complex float division is slightly more stable.
493 * improvement: DESCRIBE output has been reworked to be easier to read and
494 contains more pertinent information.
495 * improvement: failure to provide requested stack allocation compiler notes
496 provided in all cases (requested stack allocation not happening without a
497 note being issued is now considered a bug.)
498 * bug fix: SB-POSIX exports the documented types and functions
499 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
500 types. (reported by "abhi")
501 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
502 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
503 (thanks to Paul Khuong)
504 * bug fix: looping around HANDLER-CASE could silently consume stack space
505 on each iteration. (reported by "foobar")
506 * bug fix: better error signalling when calls to functions seeking elements
507 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
508 (reported by Tobias Rittweiler)
509 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
510 directory components now works as it used to. (various prolems reported by
511 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
512 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
513 (reported by Elliot Slaughter, thanks to Stas Boukarev)
514 * bug fix: bogus undefined variable warnings from fopcompiled references to
515 global variables. (thanks to Lars Rune Nøstdal)
516 * bug fix: foreign function names should now appear in backtraces on
517 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
518 * bug fix: SETF compiler macro documentation strings are not discarded
520 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
521 (thanks to Alex Plotnick)
522 * bug fix: SLEEP accepts large integer arguments, truncating them to
523 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
524 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
525 * bug fix: compiler notes for expensive slot type checks could be emitted
526 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
528 changes in sbcl-1.0.29 relative to 1.0.28:
529 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
530 https://bugs.launchpad.net/sbcl
531 Bugs can be reported directly there, or by sending email to
532 sbcl-bugs@lists.sourceforge.net
533 (no subscription required.)
534 * minor incompatible change: under weak type checking policy integer
535 types are weakened less aggressively.
536 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
537 allowed to return, which causes SBCL to quit with exit status 0. Previously
538 if the function returned with a small integer return value, that value
539 was accidentally reused as the exit status.
540 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
541 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
542 :HASH-FUNCTION argument. Refer to user manual for details.
543 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
545 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
546 microseconds since the Unix epoch on all platforms.
547 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
548 allows the compiler to safely elide boundedness checks for special
550 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
551 the symbol, prohibits both lexical and dynamic binding. This is mainly an
552 efficiency measure for threaded platforms, but also valueable in
554 * new feature: UNC pathnames are now understood by the system on Windows.
555 * optimization: the compiler uses a specialized version of FILL when the
556 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
558 * optimization: accesses to potentially non-simple arrays where element type
559 is known are 50% faster.
560 * optimization: compiler now generates faster array typechecking code.
561 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
563 * optimization: multidimensional array accesses in the absence of type
564 information regarding array rank are approximately 10% faster due to
565 open coding of ARRAY-RANK.
566 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
567 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
569 * optimization: result of call to VECTOR can now be stack allocated.
570 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
571 as long as the resulting array is one-dimensional and has a known
572 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
573 length of the list matches the known length of the vector does not
574 allocate the list as an intermediate step. Ditto for VECTOR and simple
576 * optimization: MAKE-ARRAY can now stack allocate in the presence of
577 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
578 known element type, and is known to be simple and one dimensional.
579 * improvement: SBCL now emits a compiler note where stack allocation was
580 requested but could not be provided (not in all cases, unfortunately)
581 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
582 * improvement: pretty-printing loop has been implemented properly. (thanks
583 to Tobias Rittweiler)
584 * documentation: CLOS slot typechecing policy has been documented.
585 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
586 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
587 pointer, leading to memory faults. (thanks to Bart Botta)
588 * bug fix: better floating point exception handling on x86/OpenBSD.
589 (thanks to Josh Elsasser)
590 * bug fix: exit status from QUIT when called under --script was lost
591 (reported by Hubert Kauker)
592 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
593 same implementation of FILL to initialize the array, even if a more
594 efficient one was available (reported by Stas Boukarev, thanks to
596 * bug fix: potential miscompilation of array stack allocation on x86 and
597 x86-64. (reported by Time Tossavainen)
598 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
599 result in their subforms being treated as top level forms. (reported by
601 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
602 than a machine register could leave garbage in the high bits of the
603 result register (bug 316325).
604 * bug fix: disable address space randomization Linux/x86-64 as well,
605 not just x86-64. (reported by Ken Olum)
606 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
607 generate incorrect code.
608 * bug fix: #201; type inference for CONS and ARRAY types could derive
609 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
610 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
611 could not be assigned to or bound with PROGV. (reported by Lorenz
613 * bug fix: the value of CL:- in the inspector was the previous expression
614 evaluated rather than the expression being evaluated.
615 * bug fix: constants can no longer be locally declared special.
616 * bug fix: signals delivered to threads started from foreign land (read:
617 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
618 thread by blocking all signals and resignalling.
619 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
620 from :INITFORM, if any.
622 changes in sbcl-1.0.28 relative to 1.0.27:
623 * a number of bugs in cross-compilation have been fixed, with the ultimate
624 result that building under (at least) clisp should be much more reliable.
625 * minor incompatible changes: echo-streams now propagate unread-char to the
626 underlying input stream, and no longer permit unreading more than one
628 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
629 frames, allowing for instance more reliable backtraces.
630 * improvement: the debugger REPL can now reference lexical variables
631 by name directly for code compiled with (DEBUG 3).
632 * improvement: errors from malformed declarations now have better source
633 paths associated with them. (thanks to Tobias Rittweiler)
634 * optimization: faster local calls on x86/x86-64
635 * bug fix: some error messages for out-of-bound array indexes confused the
636 index and the bound. (thanks to Stas Boukarev)
637 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
639 * bug fix: running regressions tests in shells without OSTYPE set now works.
640 (reported by Harald Hanche-Olsen)
641 * bug fix: more robust static space exhaustion signalling from
642 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
643 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
644 docstring away instead of storing it under names such as (LAMBDA (X)).
645 (reported by Leslie Polzer)
646 * bug fix: timers could go off in the wrong order, be delayed indefinitely
647 (thanks to Ole Arndt for the patch)
648 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
649 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
650 potentially-invalid effective methods in its cache.
651 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
652 instances as well (thanks to Paul Khuong)
653 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
654 SB-POSIX:WAITPID and their C equivalents.
655 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
657 changes in sbcl-1.0.27 relative to 1.0.26:
658 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
659 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
660 * improvement: the system either recovers from stack exhaustion or dies
661 properly as opposed to leaving the user uncertain of whether the handler
662 trampled on some random memory next to the stack or having to rely on
663 --lose-on-corruption (which is still a good idea to use in production
664 because stack exhaustion can happen in signal handlers which will likely
666 * bug fix: fix gc related interrupt handling bug on ppc (regression from
667 1.0.25.37, reported by Harald Hanche-Olsen)
668 * bug fix: work around signal delivery bug in darwin (regression from
669 1.0.25.44, reported by Sidney Markowitz)
670 * bug fix: fix ERROR leaking memory (reported by David Thompson)
672 changes in sbcl-1.0.26 relative to 1.0.25:
673 * incompatible change: an interruption (be it a function passed to
674 INTERRUPT-THREAD or a timer function) runs in an environment where
675 interrupts can be enabled. The interruption can use
676 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
677 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
678 potentially running out of stack. Keep in mind that in the absence
679 of WITHOUT-INTERRUPTS some potentially blocking operation such as
680 acquiring a lock can enable interrupts.
681 * incompatible change: GC-OFF and GC-ON are removed, as they were
682 always unsafe. Use WITHOUT-GCING instead.
683 * new feature: runtime option --disable-ldb
684 * new feature: runtime option --lose-on-corruption to die at the
685 slightest hint of possibly non-recoverable errors: running out of
686 memory, stack, alien stack, binding stack, encountering a memory
687 fault, etc. In the absence of --lose-on-corruption a warning is
689 * enhancement: detect binding stack exhaustion
690 * enhancement: detect alien stack exhaustion on x86/x86-64
691 * improvement: generally more stable and reliable interrupt handling
692 * improvement: there is a per thread interruption queue,
693 interruptions are executed in order of arrival
694 * improvement: a repeating timer reschedules itself when the it has
695 finished, but expiration times are spaced equally. If an
696 expiration time is in the past it will trigger after a short grace
697 period that may give a chance to other things to run.
698 * optimization: slightly faster gc on multithreaded builds
699 * optimization: faster WITHOUT-GCING
700 * bug fix: when JOIN-THREAD signals an error, do it when not holding
701 important locks so that the debugger/handler doesn't produce
702 recursive errors or deadlock.
703 * bug fix: real-time signals are not used anymore, so no more
704 hanging when the system wide real-time signal queue gets full.
705 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
707 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
708 * bug fix: fix random memory faults related to interrupts on alpha
709 * bug fix: fix random memory faults related to interrupts on sparc
710 * bug fix: fix deadlocks related to starting threads
711 * bug fix: fix deadlines on locks on futex platforms
712 * bug fix: restore errno in signal handlers
713 * bug fix: fix deadlocks related to hash tables
714 * bug fix: fix deadlocks in pcl
716 changes in sbcl-1.0.25 relative to 1.0.24:
717 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
718 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
719 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
720 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
721 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
722 better name and does not return values so stale on multiprocessor systems.
723 Also, HOLDING-MUTEX-P was added for about the only sane usage of
725 * improvement: unithread builds keep track of MUTEX-VALUE.
726 * improvement: reading from a TWO-WAY-STREAM does not touch the output
727 stream anymore making it thread safe to have a concurrent reader and
728 a writer, for instance, in a pipe.
729 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
730 arguments, making compiler-macros for SETF-functions able to inspect
731 their constant arguments.
732 * improvement: COMPILE-FILE reports times with millisecond accuracy
733 (thanks to Luis Oliveira)
734 * optimization: CHAR-CODE type derivation has been improved, making
735 TYPEP elimination on subtypes of CHARACTER work better. (reported
736 by Tobias Rittweiler, patch by Paul Khuong)
737 * bug fix: setting alien structure fields of type struct by value now
738 computes the right offset for the memory copy.
739 * bug fix: compilation problem involving inlined calls to aliens with
740 result type VOID. (reported by Ken Olum)
741 * bug fix: #235a; sequential inline expasion in different policies no
742 longer reuses the functional from the previous expansion site.
743 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
744 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
745 * bug fix: named ENUMs in multiply-referenced alien record types no longer
746 cause an implied type redefinition. Regression from 1.0.21.29.
747 * bug fix: sign-extension of small signed return values now works with C
748 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
749 * improvements to the Windows port:
750 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
751 Westfold, thanks to Rudi Schlatte)
753 changes in sbcl-1.0.24 relative to 1.0.23:
754 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
755 vector of a multidimensional SIMPLE-ARRAY.
756 * new feature: the system now signals a continuable error if standard
757 readtable modification is attempted. (thanks to Tobias Rittweiler)
758 * new feature: DIRECTORY has been extended with a non-standard keyword
759 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
760 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
761 has been robustified and documented better. (thanks to Robert Goldman)
762 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
763 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
764 * tradeoff: constant FORMAT control strings are now compiled unless
765 SPACE > SPEED (previously only when SPEED > SPACE.)
766 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
768 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
770 * bug fix: lexical type declarations are now correctly reported by
771 SB-CLTL2. (reported by Larry D'Anna)
772 * bug fix: STRING-TO-OCTETS did not handle :START properly when
773 using UTF-8 as external format. (thanks to Luis Oliveira)
774 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
775 are signalled correctly. (thanks to Stas Boukarev)
776 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
777 designator. (thanks to Tobias Rittweiler)
778 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
779 designator, and returns T instead of the function. (thanks to
781 * bug fix: direct superclasses of STANDARD-CLASS and
782 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
783 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
784 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
785 when no class with the named slot yet exists no longer causes a
786 compile-time style-warning.
787 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
788 in safe code. (reported by Didier Verna)
789 * bug fix: #430; nested structure constructors can stack allocate.
790 * bug fix: on some 64-bit platforms dynamic space size was truncated
791 to #xffff0000 bytes. (reported by Benjamin Lambert)
792 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
793 REPL unusable. (reported by Daniel Herring)
794 * bug fix: return values of READ-SEQUENCE did not take :START into
795 account on file streams, regressions since 1.0.12.22. (reported by
796 Thomas Russ, patch by Paul Khuong)
797 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
798 method specializer used to confuse permuation vector optimization.
799 * bug fix: system inserted bogus implicit type declarations for local
800 special variables in DEFMETHOD bodies.
801 * bug fix: #354; duplicated frames in backtraces due to
802 non-tail-call-optimized XEPs to functions with return type NIL
804 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
805 initializes structure object slots according to DEFSTRUCT initforms,
806 and DEFSTRUCT forms :INCLUDEind structure classes defined using
807 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
808 (reported by Bruno Haible and Stephen Wilson)
809 * bug fix: #395; fill-pointer output streams used now support
810 element-type BASE-CHAR as well.
811 * bug fix: compiler error when attempting to derive return value of
812 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
814 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
816 * bug fix: Mac OS X binaries should now be portable between Leopard
819 changes in sbcl-1.0.23 relative to 1.0.22:
820 * enhancement: when disassembling method functions, disassembly
821 for the associated fast function is also produced.
822 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
824 * optimization: printing with *PRINT-PRETTY* true is now more
825 efficient as long as the object being printed doesn't require
826 special handling by the pretty printer.
827 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
828 now interact correctly with type declarations.
829 * partial bug fix: PCL detects infinite recursion during wrapper
830 validation. (thanks to Attila Lendvai)
831 * bug fix: #426; nested function calls are inlined properly.
832 Previously if FOO was an inline function, in calls of the form
833 (FOO (FOO ...)) the outer call was not inlined.
834 * bug fix: long long arguments passed in registers to alien
835 functions on PowerPC Linux and NetBSD are now handled correctly
836 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
838 changes in sbcl-1.0.22 relative to 1.0.21:
839 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
840 for the shared object in the current directory, but passes the native
841 namestring of the designated pathname to the operation system's shared
842 object loading function as-it.
843 * minor incompatible change: --disable-debugger toplevel option now takes
844 effect before processing of initialization files and --eval or --load
846 * new feature: new commandline argument: --script, which supports
847 shebang lines. See documentation for details. (based on work by
849 * new feature: SAVE-LISP-AND-DIE can save current values of
850 --dynamic-space-size and --control-stack-size in the executable core,
851 causing it to skip normal runtime option processing. See documentation
852 for details. (thanks to Zach Beane)
853 * enhancement: inoccous calls to EVAL or generic functions dispatching
854 on subclasses of eg. STREAM no longer cause compiler notes to appear.
855 * enhancement: the system no longer resignals errors from --load and
856 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
857 associated with the original error to be lost. (thanks to Ariel
859 * enhancement: :DONT-SAVE keyword argument has been added to
860 LOAD-SHARED-OBJECT for controlling interaction with
861 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
862 the effects of an earlier LOAD-SHARED-OBJECT call.
863 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
864 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
865 provided. (reported by Cedric St-Jean)
866 * bug fix: circularity handling in the reader did not treat raw
867 structure slots correctly. (reported by Cedric St-Jean)
868 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
869 file descriptors when there were none.
870 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
871 was broken. (reporteed by Willem Broekema)
872 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
873 pathnames without a directory.
874 * bug fix: COMPILE-FILE did not warn about undefined variable
875 references at toplevel, and LOAD of the resulting fasl did
877 * bug fix: functions with non-required arguments used to end up with
878 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
879 * bug fix: redefining a function with non-required arguments didn't
880 update the system's knowledge about its call signature properly.
881 * bug fix: fixed #431; incompatible alien record type redefinitions
882 are detected and handled. (reported by Neil Haven)
883 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
884 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
886 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
887 after alien stack frames.
888 * bug fix: strings passed to mk{s,d}temp lacked null termination
890 changes in sbcl-1.0.21 relative to 1.0.20:
891 * new feature: the compiler is able to track the effective type of a
892 generic function across method addition and removal.
893 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
894 appropriately typed structure slots without locking.
895 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
896 information like those gathered by TIME using a programming-friendly
898 * new feature: TIME reports time taken even if the form performs a
899 non-local transfer of control.
900 * enhancement: reduced conservativism on GENCGC platforms: on
901 average 45% less pages pinned (measured from SBCL self build).
902 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
903 mutate constant symbols or violate declaimed type of the symbol.
904 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
905 sleeping on the semaphore in heavily contested semaphores.
906 * bug fix: semaphores and condition variables were not interrupt
908 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
909 owned by other threads anymore.
910 * bug fix: FIND on lists called KEY outside the specified
911 subsequence. (reported by budden)
912 * bug fix: LOG doesn't use single-float intermediate results when
913 given mixed integer and double-float arguments, leading to better
914 precision. (reported by Bob Felts)
915 * bug fix: LOG with base zero returned values of inconsistent type.
917 changes in sbcl-1.0.20 relative to 1.0.19:
918 * minor incompatible change: OPTIMIZE qualities
919 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
920 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
921 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
922 * documentation: some slot access efficiency guidelines have been
923 added to the user manual.
924 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
925 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
926 as ASSOC and MEMEBER.
927 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
928 to more efficient EQ-comparison versions more often.
929 * optimization: enhanced derivation of DOLIST iteration variable type
931 * optimization: constant folding of simple (LIST ...) forms as DOLIST
933 * optimization: runtime lookup of function definitions can be
934 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
935 * optimization: compiler is able to derive the return type of
936 (AREF (THE STRING X) Y) as being CHARACTER.
937 * optimization: CLRHASH on empty hash-tables no longer does pointless
938 work. (thanks to Alec Berryman)
939 * optimization: REPLACE deftransforms don't punt when :START1 or
941 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
942 no longer emits a code deletion note. (reported by Andrew
944 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
945 functions with an odd number of &OPTIONAL arguments, a &REST
946 argument, and one or more &KEY arguments at the call site.
947 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
948 arguments appeared at call sites as well.
949 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
950 READ-LINE &co can no longer read from them afterwards. (reported
952 * bug fix: fixed #427: unused local aliens no longer cause compiler
953 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
955 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
956 alien-stack leakage. (reported by Andy Hefner)
957 * bug fix: PROGV signals an error when an attempt to violate declared
958 type of a variable or bind a constant is made.
959 * bug fix: SET signals an error when an attempt to violate declared
960 type of a variable is made.
961 * bug fix: restart computation during the execution of a restart
962 test function no longer causes infinite recursion. (reported by
964 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
965 signals an error. (thanks to Pierre Mai)
966 * bug fix: EXPORT left symbol unexported in conflict situations.
967 (thanks to Michael Weber)
968 * bug fix: correctly handle name conflicts involving CL:NIL.
969 (thanks to Michael Weber)
970 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
971 conflicts arising from USEing package with conflicting symbols
972 correctly. (thanks to Michael Weber)
974 changes in sbcl-1.0.19 relative to 1.0.18:
975 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
976 warnings that go otherwise unhandled will be muffled if they are
977 of the type that's the value of this variable.
978 * optimization: stack allocation is slightly more efficient on x86
980 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
981 where a raw slot always is initialized using the initform whose
982 type is not know sufficiently well a compile-time are now compiled
983 correctly. (reported by John Morrison)
984 * bug fix: compiler no longer makes erronous assumptions in the
985 presence of non-foldable SATISFIES types.
986 * bug fix: stack analysis missed cleanups of dynamic-extent
987 arguments in non-let-converted calls to local functions.
988 * improvements to the Windows port:
989 ** adjusted address spaces for building on both Win32 and
990 Win64. (thanks for John Connors)
991 * fixed some bugs revealed by Paul Dietz' test suite:
992 ** interval arithmetic during type derivation used inexact integer
993 to single-float coercions.
994 ** arithmetic operations involving large integers and single
995 floats give the same results in compiled and interpreted code.
996 ** deriving the result type of COERCE no longer signals an error
997 if the derived type of the second argument is a MEMBER type
998 containing invalid type specifiers.
999 ** ADJOIN with constant NIL as second argument works correctly.
1000 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1002 changes in sbcl-1.0.18 relative to 1.0.17:
1003 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1004 profiles only the current thread.
1005 * minor incompatible change: changes to SYMBOL-VALUE of constants
1006 defined with DEFCONSTANT now signal an error.
1007 * enhancement: SB-SPROF now has support for wallclock profiling,
1008 and is also able to profile specific threads. REPORT output
1009 has also additional sorting options.
1010 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1012 * optimization: structure allocation has been improved
1013 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1014 ** out of line constructors are ~10% faster.
1015 ** inline constructors are ~15% faster.
1016 ** inline constructors are capable of dynamic extent allocation
1017 (generally on x86 and x86-64, in some cases on other platforms
1019 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1021 * optimization: file compiler is now able to coalesce non-circular
1022 lists, non-base strings, and bit-vectors. Additionally, constants
1023 are never referenced through SYMBOL-VALUE at runtime.
1024 * optimization: code defining methods on PRINT-OBJECT (and other
1025 generic functions in the COMMON-LISP package) now loads faster.
1026 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1028 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1029 fasl is now deleted. (reported by Attila Lendvai)
1030 * bug fix: READ-LINE always returned NIL for the last line in files.
1031 (reported by Yoshinori Tahara)
1032 * bug fix: more accurate disassembly annotations of foreign function
1033 calls. (thanks to Andy Hefner)
1034 * bug fix: trimming non-simple strings and non-string string
1035 designators when the there is nothing to trim works properly.
1036 (thanks to James Knight)
1037 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1038 (thanks to Travis Cross)
1039 * fixed some bugs revealed by Paul Dietz' test suite:
1040 ** NIL is a valid function name (regression at 1.0.13.38)
1041 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1042 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1043 fill pointers properly (regression at 1.0.12.23)
1044 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1045 displacement indices properly (regression at 1.0.12.23)
1047 changes in sbcl-1.0.17 relative to 1.0.16:
1048 * temporary regression: user code can no longer allocate closure
1049 variable storage on stack, due to bug 419 without explicitly
1050 requesting it. Please consult sbcl-devel for advice if you need to
1051 use this feature in the meanwhile.
1052 * new feature: runtime argument --control-stack-size can be used to
1053 adjust thread default control stack size.
1054 * enhancement: improved TIME output
1055 ** all times are reported using the measured accuracy (milliseconds
1056 for real and GC times, microseconds for everything else.)
1057 ** processor cycle counts on x86 and x86-64.
1058 ** interpreted forms are counted for both evaluator modes.
1059 ** number of lambdas converted by the compiler is reported.
1060 ** CPU percentage report (computed from real and total run time.)
1061 ** more comprehensive run time reporting, using a condenced format
1062 ** interperted form, lambda, and page fault counts are omitted
1064 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1066 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1067 * optimization: two argument forms of LAST are upto ~10% faster
1068 in normal SPEED policies.
1069 * optimization: NCONC no longer needs to heap cons its &REST list
1070 in normal SPEED policies.
1071 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1072 to Sidney Markowitz)
1073 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1074 regression since 1.0.9.1. (thanks to Eric Marsden)
1075 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1076 since 1.0.15.36. (thanks to Paul Khuong)
1077 * bug fix: LAST when always returned the whole list when given a bignum
1078 as the second argument.
1079 * bug fix: dynamic extent allocation of nested lists and vectors
1080 could leak to otherwise accessible parts.
1081 * bug fix: invalid optimization of heap-allocated alien variable
1083 * bug fix: fasl header checking is less vulnerable to different
1084 platform word lengths.
1085 * bug fix: more correct assembler syntax for GNU binutils
1086 2.18.50.0.4 support. (thanks to Marijn Schouten)
1087 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1089 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1090 declarations) successfully. (reported by Attila Lendvai)
1092 changes in sbcl-1.0.16 relative to 1.0.15:
1093 * minor incompatible change: revert the changes to sb-posix's error
1094 signaling added in 1.0.14.
1095 * minor incompatible change: change PROBE-FILE back to returning
1096 NIL whenever we can't get a truename, as was the case before 1.0.14.
1097 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1098 inherits from ERROR instead of just CONDITION.
1099 * new feature: SB-INTROSPECT can provide source locations for instances
1100 as well. (thanks to Tobias Rittweiler)
1101 * optimization: binding special variables now generates smaller code
1102 on threaded platforms.
1103 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1104 and cases where no :TEST is given but the compiler can infer that
1105 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1106 * optimization: better LOGNOT on fixnums.
1107 * optimization: modular arithmetic for a particular requested width
1108 is implemented using a tagged representation unless a better
1109 representation is available.
1110 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1111 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1112 for wellformedness and returns a specialized vector. (reported by
1113 Francois-Rene Rideau)
1114 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1115 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1116 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1117 unscheduling timer at the same time as another timer fires.
1118 * bug fix: don't reschedule timers for dead threads.
1119 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1120 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1121 bogus errors if select() was interrupted.
1122 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1124 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1125 * enhancement: cleaner backtraces for interactive interrupts, as
1126 well as other cases where the interesting frames used to be
1127 obscured by interrupt handling frames.
1128 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1129 now supported, and tracing a whole package using (TRACE "FOO") now
1130 traces SETF-functions as well.
1131 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1132 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1133 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1134 * unreadably printed representation of hash-tables now includes
1136 * bug fix: partially fixed #188: type propagation from assignments
1137 is now more efficient.
1138 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1139 'DOUBLE-FLOAT) are not flushable.
1140 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1141 full address of the object, and none of the tag bits.
1142 * bug fix: readably printing hash-tables now respects other printer
1143 control variables. (reported by Cedric St-Jean)
1144 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1145 keyword with MAKE-HASH-TABLE.
1146 * bug fix: export SB-POSIX:MKSTEMP.
1147 * bug fix: SORT was not interrupt safe.
1148 * bug fix: XREF accounts for the last node of each basic-block as
1150 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1151 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1152 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1153 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1154 create obsolete instances in the case of redefinition or
1155 obsoletion of a superclass. (thanks to Andy Hefner)
1156 * bug fix: Support for the Alpha architecture has been revived; it had
1157 suffered somewhat from lack of maintenance since sbcl-1.0.
1158 * improvements to the Windows port:
1159 ** The system detects the codepage to use at startup, instead of
1160 using the value from the saved core. (thanks to Kei Suzuki)
1162 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1163 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1164 (see documentation for details.)
1165 * revived support for OpenBSD (contributed by Josh Elsasser)
1166 * partially fixed bug #108: ROOM no longer suffers from occasional
1167 (AVER (SAP= CURRENT END)) failures.
1168 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1169 bodies no longer cause a WARNING to be signalled. (reported by
1171 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1172 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1173 the bug in TRUNCATE.) (reported by Michael Weber)
1174 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1175 no samples. (reported by Andy Hefner)
1176 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1177 no longer appear as (NIL ...) frames in backtraces.
1178 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1179 is now actually exported from SB-EXT as documented. (reported by
1181 * bug fix: sb-aclrepl now correctly understands how to inspect
1182 single-floats on 64-bit platforms where single-floats are not boxed.
1183 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1184 yet been finalized. (reported by Levente Meszaros)
1185 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1186 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1187 SBCL-specific optimize qualities.
1189 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1190 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1191 an executable in the search path, and does so in the child
1192 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1193 been removed; it can be found in the CVS history, for somebody who
1194 needs that search behavior (see the manual).
1195 * minor incompatible change: compiler policy re. weakening type
1196 checks has changed: now type checks are weakened only if SAFETY < 2
1198 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1199 unparsing of directory pathnames as files. Analogously,
1200 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1201 filename to parse into a directory pathname.
1202 * enhancement: implicit generic function creation now signals a
1203 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1204 users can bind handlers for and muffle around calls to LOAD.
1205 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1206 to be used (using the default stream external format), and allows
1207 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1208 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1209 strings and vectors whose element-type or simplicity is not fully
1210 known at compile-time.
1211 * optimization: STRING-TRIM and related functions no longer allocate
1212 a new string when no trimming needs to be performed. These functions
1213 are also faster than before when the input string has been declared
1215 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1216 * optimization: READ-LINE is significantly faster for files containing
1218 * optimization: non-open coded uses of character comparison operators
1219 (e.g. char=) no longer cons when called with more than one parameter
1220 on platforms supporting dynamic-extent allocation.
1221 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1222 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1223 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1225 * bug fix: some sequence functions elided bounds checking when
1227 * bug fix: too liberal weakening of union-type checks when SPEED >
1229 * bug fix: more bogus fixnum declarations in ROOM implementation
1232 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1233 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1234 :SYNCHRONIZED argument, which makes the hash-table safe for
1235 concurrent accesses (but not iteration.) See also:
1236 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1237 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1238 * optimization: CONCATENATE on strings is an order of magnitude faster
1239 in code compiled with (> SPEED SPACE).
1240 * optimization: SUBSEQ is ~50% faster on lists.
1241 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1242 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1243 END is smaller then START.
1244 * bug fix: SB-PROFILE will no longer report extra consing for nested
1245 calls to profiled functions.
1246 * bug fix: ROOM implementation had bogus fixnum declarations which
1247 could cause type-errors when calling ROOM on large images.
1248 * bug fix: if file compilation is aborted, the partial fasl is now
1249 deleted, and COMPILE-FILE returns NIL as the primary value.
1250 * bug fix: number of thread safety issues relating to SBCL's internal
1251 hash-table usage have been fixed.
1252 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1253 be returned from its body when the values were being returned
1254 using unknown-values return convection and the W-P-O was wrapped
1255 inside an UNWIND-PROTECT.
1256 * bug fix: sb-posix should now compile again under Windows, enabling
1257 slime to work again.
1259 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1260 * incompatible change: hash-table accessor functions are no longer
1261 automatically protected by locks. Concurrent accesses on the same hash-table
1262 from multiple threads can give inconsistent results or even corrupt the
1263 hash-table completely. Multi-threaded applications should do their own
1264 locking at the correct granularity. In the current implementation it is
1265 still safe to have multiple readers access the same table, but it's not
1266 guaranteed that this property will be maintained in future releases.
1267 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1268 and will signal an error at runtime.
1269 * enhancement: SB-THREAD package now exports a semaphore interface.
1270 * enhancement: CONS can now stack-allocate on x86 and
1271 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1273 * enhancement: nested lists can now be stack allocated on
1274 platforms providing stack allocation support.
1275 * enhancement: dynamic-extent support has been extended to support
1276 cases where there are multiple possible sources for the stack
1278 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1279 if the mutex is uncontested on Linux.
1280 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1281 as specified by the CLHS. (thanks to Tobias Rittweiler)
1282 * bug fix: NaN comparison now works on x86-64.
1283 * bug fix: CLOSE :ABORT T on a stream with pending output now
1285 * bug fix: instances of non-standard metaclasses using standard
1286 instance structure protocol sometimes missed the slot type checks
1288 * bug fix: known functions can be inlined in high-debug code.
1290 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1291 * minor incompatible change: the MSI installer on Windows no longer
1292 associates .lisp and .fasl files with the installed SBCL.
1293 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1294 on Windows. (thanks to Luis Oliviera)
1295 * new feature: SB-CLTL2 contrib module now implements
1296 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1297 * optimization: scavenging weak pointers is now more efficient,
1298 requiring O(1) instead of O(N) per weak pointer to identify
1299 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1300 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1301 method bodies using constant slot-names when the first argument is
1302 a specializer parameter for the method.
1303 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1304 names, when the class of the instance is a direct instance
1305 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1306 as slow as the constant slot-name case.)
1307 * optimization: member type construction is now O(N) instead
1309 * optimization: UNION and NUNION are now O(N+M) for large
1310 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1312 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1313 now more readable in environments like Slime which display it.
1314 (thanks to Tobias C. Rittweiler)
1315 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1316 was able to infer the correct argument type for the object on which
1317 the CAS operation was being performed.
1318 * bug fix: copy propagation interfered with parallel assignment
1319 semantics in local calls. (reported by Paul Khuong)
1320 * bug fix: the signed modular fixnum shift compiled to wrong code on
1321 x86 and x86-64. (spotted by a slight modification to some of
1324 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1325 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1326 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1327 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1329 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1330 and generic function now print the object identity for anonymous
1331 instances. (thanks to Attila Lendvai)
1332 * enhancement: as an extension to MOP, SBCL now supports SETF of
1333 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1334 (thanks to Attila Lendvai)
1335 * enhancement: sb-cover has an alternate annotation mode which puts
1336 the form annotations at the car of the form, instead of annotating
1337 it completely. The benefit of this mode is that it shows better
1338 which forms were instrumented by the compiler.
1339 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1340 by printer control variables. (reported by Dan Corkill)
1341 * bug fix: system leaked memory when delayed output was performed by
1342 the OS in smaller chunks then expected. (thanks to David Smith)
1343 * bug fix: system leaked memory when file streams were not closed
1345 * bug fix: large objects written to slow streams that were modified
1346 after the write could end up with the modified state written to
1347 the underlying file descriptor.
1348 * bug fix: multiple threads operating in parallel on the same stream
1349 could cause buffer-overflows.
1350 * bug fix: source location information is stored correctly
1351 (broken since 1.0.6). This bug would generally show up as the
1352 Slime debugger highlighting the wrong form when the sldb-show-source
1354 * bug fix: Branch forms are again annotated as branches in the sb-cover
1356 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1357 on x86-64. (reported by Gregory Vanuxem)
1358 * bug fix: EQUALP could return wrong results for structures with raw
1359 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1360 word). (reported by Vjacheslav Fyodorov)
1361 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1364 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1365 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1366 atomic compare-and-swap operations on threaded platforms.
1367 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1368 allows assigning a global minimum value to optimization qualities
1369 (overriding proclamations and declarations).
1370 * enhancement: closed over variables can be stack-allocated on x86
1372 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1374 * optimization: slot definition lookup is now O(1). This speeds up
1375 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1376 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1377 * optimization: ASSOC and MEMBER can now be open-coded for all
1378 combinations of keyword arguments when second argument is constant
1379 and SPEED >= SPACE. In other cases a specialized version is
1381 * bug fix: using obsoleted structure instances with TYPEP and
1382 generic functions now signals a sensible error.
1383 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1384 (reported by Kristoffer Kvello)
1385 * bug fix: backtrace construction is now more careful when making
1386 lisp-objects from pointers on the stack, to avoid creating bogus
1387 objects that can be seen by the GC.
1388 * bug fix: defaulting of values in contexts expecting more than 7
1389 variables now works on x86-64. (reported by Christopher Laux)
1390 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1392 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1393 as the property-list of a symbol.
1394 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1395 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1396 situations requested, are once again file-compileable. (reported
1399 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1400 * MOP improvement: support for user-defined subclasses of
1401 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1402 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1403 the expansion of DEFMETHOD, is responsible for generating a form
1404 which creates a list of specializers when evaluated. Additional
1405 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1406 debugging and introspective support.
1407 * minor incompatible change: the (unsupported) spinlock interface
1408 has changed: free spinlock now has the value NIL, and a held spinlock
1409 has the owning thread as its value.
1410 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1411 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1413 * enhancement: name of a socket-stream is now "a socket" instead of
1414 "a constant string".
1415 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1416 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1417 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1418 for generic functions. (Thanks to Tobias C. Rittweiler)
1419 * optimization: bignum printing speed has been improved by 20-40%
1420 (depending on the bignum size.)
1421 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1423 * bug fix: the cache used by the CLOS to store precomputed effective
1424 methods, slot offsets, and constant return values is now thread and
1426 * bug fix: generic function dispatch function updating is now thread
1427 and interrupt safe (in the sense that the known issues have been
1429 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1430 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1431 * bug fix: asdf systems with dependencies to the SB-POSIX or
1432 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1433 * bug fix: interrupt safety of applicable method computation has been
1436 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1437 * new contrib: sb-cover, an experimental code coverage tool, is included
1438 as a contrib module.
1439 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1440 significantly faster.
1441 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1442 produce more efficient code on x86-64 if the compiler can determine
1443 that (+ INDEX <constant>) does not require a bounds check and FOO
1444 has an element type at least 8 bits wide.
1445 * enhancement: a new, experimental synchronous timeout facility is
1446 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1447 * enhancement: when a symbol name conflict error arises, the
1448 conflicting symbols are always printed with a package prefix.
1449 (thanks to Kevin Reid)
1450 * enhancement: stepping is now once again supported on the SPARC and
1451 MIPS platforms. (It is also now more likely to work on CheneyGC
1453 * enhancement: sb-sprof can now also track and report accurate call
1455 * bug fixes: the treatment of non-standard subclasses of
1456 SB-MOP:SPECIALIZER is more correct.
1457 * incompatible change: PURIFY no longer copies the data from the
1458 dynamic space into the static and read-only spaces on platforms
1459 that use the generational garbage collector
1460 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1462 * bug fix: GC race condition occasionally resulting in crashes with
1463 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1465 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1467 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1468 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1469 * bug fix: an asynchronous interrupt could previously leave the
1470 system running with GC inhibited.
1471 * bug fix: a DECLARE form evaluated at top-level now causes an error
1472 rather than silently (or verbosely) returning NIL.
1473 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1474 result in a error being signalled due to source form lookup errors.
1475 (reported by Peter Graves)
1477 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1478 * incompatible change: removed writer methods for host-ent-name,
1479 host-ent-addresses -- changing the values did not update the DNS
1481 * minor incompatible change: changed experimental JOIN-THREAD interface
1482 * documentation: the manual now lists reader and writer methods
1483 in class slot documentation sections. (thanks to Richard M Kreuter)
1484 * documentation: unwinding from asyncronous events has been
1485 documented as unsafe.
1486 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1487 in multithreaded application code.
1488 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1489 platforms. (thanks to James Anderson for the optimization hint)
1490 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1492 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1493 variants no longer cons.
1494 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1495 their NOT- variants no longer cons.
1496 * optimization: EQUAL hash tables no longer use SXHASH for objects
1497 of all data types, but instead use an EQL hash for types for which
1498 EQUAL is the same as EQL.
1499 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1500 are significantly faster.
1501 * optimization: new STRING-OUTPUT-STREAM implementation is much
1502 faster for large outputs and conses 30% less on average.
1503 * enhancement: XREF information is now collected for references made
1504 to global variables using SYMBOL-VALUE and a constant argument.
1505 * enhancement: SIGINT now causes a specific condition
1506 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1507 * bug fix: FILE-POSITION used to signal an error in some cases where
1508 ANSI requires it to return NIL.
1509 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1510 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1511 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1513 * bug fix: bad type declaration in the CLOS implementation has
1514 been fixed. (reported by James Anderson)
1515 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1516 (thanks to Lutz Euler)
1517 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1518 required by the CLHS. (reported by Samium Gromoff)
1519 * bug fix: dead unbound variable references now signal an error.
1520 (reported by Marco Monteiro)
1521 * bug fix: / with an unused value was being deleted in safe code.
1522 (thanks to Marco Monteiro and Kevin Reid)
1523 * bug fix: number of characters that can be written onto a single
1524 line in a file is unlimited.
1525 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1526 been fixed by inhibiting interrupts for when GC is disabled.
1527 * bug fix: some interrupt safety issues with GETHASH, (SETF
1528 GETHASH), CLRHASH and REMHASH have been fixed.
1529 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1530 specifier no longer causes infinite recursion.
1531 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1532 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1533 * bug fix: an &environment argument with the correct variable information
1534 is passed to macros that are expanded during byte compilation.
1535 (reported by Samium Gromoff)
1536 * bug fix: a logic error was causing the hash function for bignums to
1537 have excessive amounts of collisions. (reported by Faré Rideau)
1538 * bug fix: modifying the contents of an array could change the return
1539 value of SXHASH on that array, which is only allowed for strings
1540 and bit vectors. (bug introduced in 0.9.16)
1541 * improvement: the x86-64/darwin port now passes all tests (except
1542 for the debugger tests) but should still be considered
1543 experimental until this is fixed.
1544 * improvement: a style-warning is signaled for CASE (etc) clauses with
1545 duplicate keys. (thanks to Kevin Reid)
1546 * improvement: macos/x86 and macos/x86-64 now use mach exception
1547 handlers for dealing with illegal instructions (for trapping and
1548 error handling) and memory protection violations (for GC).
1550 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1551 * new platform: experimental support for x86-64/darwin (MacOS).
1552 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1553 and getnameinfo sockets functions are used instead of gethostbyaddr
1554 and gethostbyname, on platforms where the newer functions are available.
1555 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1557 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1558 don't print the startup banner, but behave as if --noinform was passed
1559 as a command line argument. (thanks to Kevin Reid)
1560 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1561 * optimization: code using alien values with undeclared types is much faster.
1562 * optimization: the compiler is now able to open code SEARCH in more cases.
1563 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1564 * bug fix: using standardized COMMON-LISP special variables as loop
1565 variables no longer signals bogus package lock violations. (reported
1567 * bug fix: declaring local loop variables to be of a range-limited type
1568 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1569 (reported by Andras Simon)
1570 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1571 bugs remain on x86-64.)
1572 * bug fix: the #= and ## reader macros now interact reasonably with
1573 funcallable instances.
1574 * bug fix: type-checks for function arguments were compiled using the
1575 compiler policy settings of the wrong lexical environment (in 1.0.2
1577 * bug fix: SHADOW accepts characters as string designators, as required
1578 by the spec (thanks to Eric Marsden)
1579 * bug fix: fixed GC safety issues when foreign functions are called with
1580 non-base strings as arguments
1581 * bug fix: more consistent error output for fatal-compiler-warnings, like
1583 * bug fix: functions with proper names were showing up as NIL in
1584 backtraces (reported by Edi Weitz, regression in 1.0.2)
1586 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1587 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1588 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1589 produce more efficient code on the x86 if the compiler can determine
1590 that (+ INDEX <constant>) does not require a bounds check and FOO
1591 has an element type at least 8 bits wide.
1592 * bug fix: references to undefined variables are handled the same way
1593 in toplevel forms as in the normal compiler
1594 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1596 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1597 (thanks to Jon Buller)
1598 * improvement: faster compilation times for complex functions
1599 * improvement: added readlink support to SB-POSIX (thanks to Richard
1602 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1603 * improvement: experimental support for mach exception handling on
1604 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1606 * improvement: support for GBK external format.
1607 (thanks to Chun Tian (binghe))
1608 * improvement: the debugger now displays variables that have been closed
1609 over, in code compiled with (DEBUG 2) or higher
1610 * improvement: support for executable cores on NetBSD (thanks to
1612 * new feature: added a RESTART-FRAME debugger command
1613 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1614 be used to provide an implementation for FILE-POSITION on Gray streams
1615 (thanks to Eric Marsden)
1616 * new feature: add syslog, openlog and closelog support to SB-POSIX
1617 (thanks to Richard Kreuter)
1618 * optimization: the function call overhead in code compiled with
1619 a high DEBUG optimization setting is significantly
1620 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1621 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1622 (thanks to Tony Martinez)
1623 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1624 evaluated once (reported by Kevin Reid)
1625 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1626 works again (thanks to Kilian Sprotte)
1627 * bug fix: an error is signaled for tagbodies with duplicate tags
1628 (thanks to Stephen Wilson)
1629 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1630 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1631 stack frames from alien callbacks.
1632 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1633 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1634 65k pages (thanks to David Woodhouse)
1635 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1637 changes in sbcl-1.0.1 relative to sbcl-1.0:
1638 * new platform: FreeBSD/x86-64, including support for threading.
1639 * new feature: the compiler stores cross-referencing information
1640 about function calls (who-calls), macroexpansion (who-macroexpands)
1641 and special variables (who-binds, who-sets, who-references) for code
1642 compiled with (< SPACE 3). This information is available through the
1643 sb-introspect contrib.
1644 * new feature: users may subclass SEQUENCE, and have instances of
1645 these classes interoperate with standard Common Lisp functions if
1646 a number of methods are defined. (This feature is experimental
1647 and the interface subject to change based on feedback from SBCL
1648 users and the general community)
1649 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1650 x86/x86-64, rather than the previous fixed depth of 8
1651 * improvement: another pthread back-end of mutex "pthread-futex".
1652 * bug fix: non-ascii command-line arguments are processed correctly
1653 (thanks to Yaroslav Kavenchuk)
1654 * bug fix: non-required arguments were not passed correctly when a method
1655 defined using DEFMETHOD was called from a mop-generated method using
1656 CALL-NEXT-METHOD (reported by Pascal Costanza)
1657 * bug fix: recursion is now permitted in accessors through
1658 SLOT-UNBOUND. (reported by Pascal Costanza)
1659 * bug fix: an error was signaled at startup if the HOME environment
1660 variable was defined, but had an empty value (reported by Peter Van Eynde)
1661 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1662 signal a PROGRAM-ERROR, not a BUG.
1663 * bug fix: SB-POSIX:READDIR works when built with large file support.
1664 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1666 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1667 for better automatic indentation support. (thanks to Matt Pillsbury)
1668 * optimization: loading generic functions no longer takes O(n^2) time,
1669 proportional to the amount of methods in the generic function
1670 (reported by Todd Sabin and Jeremy Brown)
1671 * optimization: the FIND and POSITION family of sequence functions
1672 are significantly faster on arrays whose element types have been
1674 * improvements to the Windows port:
1675 ** Intermittent heap corruption problems have been fixed. (thanks
1676 to Alastair Bridgewater)
1677 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1679 ** Lisp is able to unwind foreign exception frames from alien
1680 callbacks. (thanks to Alastair Bridgewater)
1682 changes in sbcl-1.0 relative to sbcl-0.9.18:
1683 * improvement: experimental support for threading on FreeBSD/x86.
1684 (thanks to NIIMI Satoshi)
1685 * improvement: runtime option --dynamic-space-size can be used
1686 to set the size of the dynamic space reserved on startup.
1687 * improvement: floating point modes in effect are now saved in
1688 core, and restored on startup.
1689 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1690 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1691 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1692 threads are not running after *SAVE-HOOKS* have run.
1693 * improvement: writes to CLOS instance slots are type-checked in code
1694 compiled with (SAFETY 3)
1695 * improvement: floating-point exception handling on FreeBSD (thanks to
1697 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1698 (thanks to Zach Beane)
1699 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1701 * improvement: added support for the Shift-JIS external format.
1702 (contributed by NIIMI Satoshi)
1703 * improvement: callbacks are supported on Linux/PPC. (thanks to
1705 * bug fix: compiler bug triggered by a (non-standard) VALUES
1706 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1707 * bug fix: file compiler no longer confuses validated and already
1708 dumped structurres. (reported by Kaersten Poeck)
1709 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1710 fill-pointer signals a type-error as required. (thanks to
1712 * bug fix: disassemly of funcallable instances works.
1713 * bug fix: single stepping on PPC.
1714 * bug fix: fix thread-safety problems in the type system (generally
1715 manifesting as nonsensical errors like "STRING is a bad type specifier
1716 for sequences" or "The value 1 is not of type FIXNUM")
1717 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1718 (reported by Josip Gracin)
1719 * bug fix: an error is signaled for attempts to displace arrays with
1720 incompatible element types (thanks to Mario Mommer)
1721 * bug fix: more correct handling of wide characters in debug info
1722 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1723 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1724 and don't cause extra consing
1725 * optimization: MAP and MAP-INTO are significantly faster on vectors
1726 whose elements types have been declared.
1727 * Improvements to SB-SPROF:
1728 ** Support for allocation profiling
1729 ** Reduced profiling overhead, especially for long profiling runs
1730 * Improvements to the Windows port:
1731 ** floating point exceptions are now reported correctly.
1732 ** stack exhaustion detection works partially.
1733 ** more accurate GET-INTERNAL-REAL-TIME.
1734 ** better RUN-PROGRAM behaviour in case of errors in the child
1736 ** PROBE-FILE now simplifies pathnames correctly.
1737 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1738 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1739 1st 1970 (although time timezone data will be unreliable).
1740 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1742 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1743 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1744 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1746 * bug fix: two potential GC deadlocks affecting threaded builds.
1747 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1748 returns T (reported by Anton Kazennikov)
1749 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1750 with non-variable places
1751 * bug fix: remove a race condition in the setting of
1752 funcallable-instance functions, this should make threaded CLOS
1753 code more stable against memory faults.
1754 * bug fix: corruption of specials when unbinding is interrupted by an
1755 asynchronous unwind (reported by Hannu Koivisto)
1756 * improvement: the debugger will now also display local variables that
1757 are only used once, for code compiled with a DEBUG optimization quality
1760 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1761 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1762 * incompatible change: External-format support for FFI calls. The
1763 SB-ALIEN:C-STRING no longer implies an ASCII
1764 external-format. Instead the string is subject to external-format
1765 conversion. Additionally return values of type SB-ALIEN:C-STRING
1766 are by default of type (SIMPLE-ARRAY CHARACTER), not
1767 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1768 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1769 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1770 * incompatible change: SB-EXT package no longer contains the
1771 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1772 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1774 * incompatible change: the single-stepper is no longer available
1775 on Alpha, Mips and Sparc platforms.
1776 * minor incompatible change: the direct superclasses of
1777 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1778 not (STANDARD-OBJECT FUNCTION). This makes the
1779 class-precedence-lists of GENERIC-FUNCTION and
1780 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1782 * minor incompatible change: the default stream external format on
1783 non-unicode SBCL is no longer detected from the locale, but is always
1785 * new feature: Add a version of evaluator that uses an interpreter instead
1786 of the compiler. EVAL still uses the compiler by default, to switch it
1787 to use the interpreter, set the value of the variable
1788 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1789 * minor incompatible change: the single-stepper REPL has been merged
1790 with the normal debugger (see the "Stepping" heading of the debugger help
1791 for more details). The debugger command STEP will no longer switch
1792 to the single-stepper REPL.
1793 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1794 for a type now works.
1795 * bug fix: loading of default sysinit file works. (thanks to Leonid
1797 * bug fix: better detection of circularities in the file-compiler.
1798 (reported by Marco Monteiro)
1799 * bug fix: the CL pathname functions now work with files that have
1800 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1801 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1802 systems with Unix98 pty semantics.
1803 * bug fix: ASDF-INSTALL will now work with bsd tar.
1804 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1806 * bug fix: timers expiring in dead threads no longer cause a
1807 type-error (reported by Paul "Nonny Mouse").
1808 * bug fix: thanks to more lightweight single-stepper instrumentation,
1809 code compiled with (DEBUG 3) will compile and execute significantly faster,
1810 and will have more accurate type-inferencing than before
1811 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1812 whose bindings are modified
1813 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1814 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1815 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1816 CL:SOFTWARE-VERSION with proper version
1818 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1819 * feature: implemented the READER-METHOD-CLASS and
1820 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1821 as specified by AMOP.
1822 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1824 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1825 (thanks to Lutz Euler)
1826 * optimization: hashing of general arrays and vectors has been
1827 improved. (reported by Any Fingerhut)
1828 * enhancement: SB-INTROSPECT is now able to find definitions of
1829 profiled functions. (thanks to Troels Henriksen)
1830 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1831 as well, allowing compiler-macros for SETF-functions to expand.
1832 * enhancement: step-instrumentation no longer wraps known
1833 single-value functions with multiple-value context, allowing
1834 better type inference.
1835 * fixed bug #337: use of MAKE-METHOD in method combination now works
1836 even in the presence of user-defined method classes. (reported by
1837 Bruno Haible and Pascal Costanza)
1838 * fixed bug #339(c): if there are applicable methods not part of any
1839 long-form method-combination group, call INVALID-METHOD-ERROR.
1840 (reported by Bruno Haible)
1841 * fixed bug #361: the :FUNCTION initarg in the protocol for
1842 initialization of methods can now be used to override
1843 internally-produced optimized functions. (reported by Bruno
1845 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1846 system-provided lambda expression no longer cause warnings about
1847 unbound #:|pv-table| symbols.
1848 * bug fix: improved the handling of type declarations and the
1849 detection of violations for keyword arguments with non-constant
1851 * bug fix: potentially erronous calls to PATHNAME and
1852 MERGE-PATHNAMES were being flushed in some cases.
1853 (reported by Richard Kreuter)
1854 * bug fix: compiled calls to TYPEP were mishandling obsolete
1855 instances. (reported by James Bielman and Attila Lendvai)
1856 * bug fix: format strings with ~> without matching ~< no longer
1857 trigger an AVER, but signal an understandable error instead.
1858 (reported by Antonio Martinez)
1859 * bug fix: specifying an output-file without a pathname-type for
1860 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1861 of input-file instead of "fasl". (reported by Robert Dodier)
1862 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1863 (reported by James Y Knight).
1864 * bug fix: compiler-macros-function did not consider the environment
1865 argument for shadowing by local functions.
1866 * bug fix: compiler-macros expansion was inhibited by local INLINE
1868 * bug fix: inline expansions of known functions were subject to
1869 step-instrumentation in high debug policies, leading to problems
1870 with type-inference.
1871 * bug fix: compiler failed to differentiate between different CONS
1872 types in some cases.
1873 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1874 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1875 * bug fix: #368: incorrect use of expressed vs. upgraded array
1877 * bug fix: #306a: more precise unions of array types.
1878 * thread-safety improvements:
1879 ** CONDITION-WAIT could return early on Linux, if the thread was
1880 interrupted and subsequently continued with SIGCONT.
1881 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1883 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1884 * added support for the ucs-2 external format. (contributed by Ivan
1886 * minor incompatible change: pretty printing of objects of type
1887 (cons symbol) is, in the default pprint-dispatch-table, now
1888 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1890 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1891 called later in a class's lifetime, possibly as late as when the
1892 first instance of the class is created. Previously,
1893 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1894 class became finalizeable.
1895 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1896 for multibyte external-format streams. (thanks to "vbzoli")
1897 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1898 with :ALLOCATION :CLASS inherited from superclasses of the
1900 * fixed bug: anonymous classes can now be created using the :NAME
1901 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1902 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1903 * fixed bug: core-files saved with :EXECUTABLE T can again be
1904 executed when SBCL_HOME isn't set. (reported by James Knight)
1905 * fixed bug: toplevel LOCALLY forms with declarations could
1906 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1907 * fixed bug: printing from several different threads using different
1908 values of *print-case* could cause invalid output, due to
1909 some internal special variables of the printer not being bound
1910 thread-locally (reported by Max Mikhanosha)
1911 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1912 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1913 (reported by Pascal Costanza)
1914 * fixed bug: FINALIZE-INHERITANCE is called from
1915 REINITIALIZE-INSTANCE on classes when the class has previously
1916 been finalized, as required by AMOP.
1917 * minor code generation optimizations:
1918 ** better register allocation in CLOS dispatching functions
1919 ** overflow detection when coercing signed bytes to fixnums on x86-64
1920 ** is now implemented with one IMUL instruction instead of three shifts
1921 ** more efficient bit-vector access on x86 and x86-64
1922 ** more efficient access to raw structure slots on x86 and x86-64
1923 * fixed some bugs revealed by Paul Dietz' test suite:
1924 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1925 return its argument.
1927 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1928 * feature: thread support on Solaris/x86, and experimental thread support
1930 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1932 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1933 default method for SLOT-UNBOUND.
1934 * minor incompatible change: prevent the user from specializing the
1935 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1936 somewhat counter to the intent of the protocol, I (CSR) think, and
1937 additionally it just doesn't work in SBCL as currently
1938 implemented, thanks to optimizations (that are always valid for
1939 the other three SLOT-VALUEish functions, but not for the setter).
1940 * minor incompatible change: the :SB-LDB feature is now enabled by
1941 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1942 the low-level debugger.
1943 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1944 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1945 down to an SB-SYS:FD-STREAM, allowing direct communication in
1946 more cases. Temporary files and pipes are still used as a fallback
1948 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1949 on the non-reentrant C functions localtime(3) and gmtime(3).
1950 * bug fix: global optimization policy was not visible in LOCALLY and
1952 * bug fix: class objects can be used as specializers in methods.
1953 (reported by Pascal Costanza)
1954 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1955 with a type error. (reported by blitz_ on #lisp)
1956 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1957 failed with a type error. (reported by Pascal Bourguignon)
1958 * bug fix: merging pathnames against defaults with :DIRECTORY
1959 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1960 (reported by James Y Knight)
1961 * bug fix: saving large (>2GB) cores on x86-64 now works
1962 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1963 constant index and a (simple-array (signed-byte 32)) array
1964 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1965 error (patch by Robert J. Macomber)
1966 * feature: TIME now displays the amount of run-time spent in GC
1967 * bug fix: The debugger now does a better job of respecting
1968 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1969 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1970 workaround for bug 403.)
1971 * bug fix: floating point exception handling now works on FreeBSD
1972 (thanks to NIIMI Satoshi)
1973 * fixed some bugs revealed by Paul Dietz' test suite:
1974 ** MISC.641: LET-conversion were not supposed to work in late
1976 * improvements to the Win32/x86 port:
1977 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1978 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1980 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1981 * new feature: source path information is generated for macro-expansion
1982 errors for use in IDE's like Slime (thanks to Helmut Eller)
1983 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1984 * bug fix: compiler does not loop forever on an invalid type in
1986 * improvement: compilation of most CLOS applications is significantly
1988 * optimization: added a limited bytecode compiler for simple toplevel
1989 forms, speeding up compilation and FASL loading
1990 * bug fix: the statistical profiler now properly distinguishes anonymous
1993 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1994 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1995 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1996 into subclasses of the finalized class. Now user calls to
1997 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1998 system return before any subclasses are finalized.
1999 * minor incompatible change: The reader no longer ignores errors
2000 regarding non-existent packages in #+ and #- feature tests.
2001 * new feature: command line options --no-sysinit, --no-userinit to
2002 inhibit loading the corresponding init files
2003 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2004 for sending data through UDP sockets (thanks to François-René Rideau)
2005 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2006 error is signalled instead (thanks to François-René Rideau)
2007 * minor incompatible change: Error signalling behaviour of lexical
2008 operations violating package locks has changed slightly. Refer to
2009 documentation on package locks for details.
2010 * enhancement: EVAL can process IF-expressions without resorting to the
2012 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2013 constant-folded properly due to missing out-of-line functions.
2014 (reported by Mika Pihlajamäki)
2015 * bug fix: LISTEN sometimes returned T even in cases where no data was
2016 immediately available from the stream
2017 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2018 were reversed. (reported by Levente Mészáros)
2019 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2020 when given a vector displaced to an adjustable array. (reported
2022 * bug fix: derivation of float boundaries from numbers outside the
2023 appropriate float range (reported by John Wiseman)
2024 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2026 * bug fix: precomputing cache entries for generic functions with
2027 some subclasses of specializers as yet invalid does not attempt to
2028 fill a cache line with a negative offset. (reported by Levente
2030 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2031 allow condition class objects as arguments to DOCUMENTATION and
2032 (SETF DOCUMENTATION); only find and set documentation for
2033 structure names for the STRUCTURE doc-type. (suggested by Gary
2035 * improvements to the Win32/x86 port:
2036 ** (user-homedir-pathname) and default initialization file
2037 locations now know about the user's "Documents and Settings"
2038 directory (thanks to Yaroslav Kavenchuk)
2039 ** run-program is implemented (thanks to Mike Thomas)
2040 ** sockets support (thanks to Timothy Ritchey)
2041 ** better backtrace support (thanks to Alastair Bridgewater)
2042 ** sb-grovel supported
2043 ** asdf-install and sb-posix work somewhat
2044 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2045 * improvements to the Solaris/x86 port:
2046 ** works on Solaris 11/Solaris Express
2047 ** floating-point exception handling support
2048 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2049 * fixed some bugs revealed by Paul Dietz' test suite:
2050 ** REMOVE-METHOD returns its generic function argument even when
2051 the method is not one of the generic functions' methods.
2052 ** objects declared as MEMBER types can be admissible arguments to
2053 structure accessors.
2054 ** printing characters should simply be printed by the FORMAT ~:C
2056 ** compiler failure when compiling functions with hairy constant
2057 defaults for optional parameters.
2058 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2059 function, which is already optimized.
2061 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2062 * new platform: experimental support for SBCL x86/Darwin, including
2063 MacOS X 10.4.5 on Intel.
2064 * new feature: Unicode character names are now known to the system
2065 (through CHAR-NAME and NAME-CHAR).
2066 * new feature: the filesystem location of SBCL's core file is
2067 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2068 * minor incompatible change: the contrib modules SB-POSIX and
2069 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2070 this change is to make it easier to distribute
2071 location-independent binaries.
2072 * bug fix: as implied by AMOP, standardized classes no longer have
2073 slots named by external symbols of public packages. (reported by
2075 * optimization: calling functions via constant symbols -- as in
2076 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2077 via the function object as in (FUNCALL #'FOO).
2078 * optimization: on x86 and x86-64, the calling convention for the
2079 case of dealing with an unknown number of values has been altered
2080 to be friendlier to the prediction heuristics implemented,
2081 particularly with reference to CALL and RET pairing. (thanks to
2082 Alastair Bridgewater)
2083 * optimization: on x86, the code for access to thread-local symbol
2084 values and binding/unbinding of thread-local symbols is smaller.
2085 (thanks to Alastair Bridgewater)
2086 * enhancement: CONSTANTP is now able to determine constantness of
2087 more complex forms, including calls to constant-foldable standardized
2088 functions and some special forms beyond QUOTE.
2089 * fixed bug: occasional GC crashes on Solaris/x86
2090 * optimization: x86-64 supports stack allocation of results of simple
2091 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2092 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2093 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2094 (thanks to James Knight)
2095 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2096 by the standard (thanks to Stephen Compall)
2098 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2099 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2100 be used for bundling the runtime and the core file into one
2101 executable binary. This feature is not currently supported on all SBCL
2102 platforms. (thanks to James Bielman and NIIMI Satoshi)
2103 * new feature: a generational or ephemeral garbage collector is now
2104 the default on the PowerPC platform (both Linux and Darwin). The
2105 old Cheney (stop and copy) collector is a build-time option.
2106 (thanks to Cyrus Harmon, after Raymond Toy)
2107 * minor incompatible change: the method by which SBCL finds its
2108 contributed modules has changed; it no longer relies on symbolic
2109 links from an $SBCL_HOME/systems directory, but searches directly
2110 in the subdirectories of $SBCL_HOME.
2111 * enhancement: the dynamic heap size on the Linux/PPC platform is
2112 markedly larger, even using the older Cheney garbage collector.
2113 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2114 certain complicated string types. (reported by Gary King)
2115 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2116 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2117 * fixed bug: DOCUMENTATION on structures no longer signals an
2118 error if no structure type of the right name exists. (reported by
2120 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2121 applicable non-standard primary or :AROUND method on
2122 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2123 no longer cause unbound variable errors. (reported by Kevin Reid)
2124 * fixed bug: metacircle resolution in cases where methods have slots
2125 added before the slots from STANDARD-METHOD. (reported by Jean
2127 * fixed bug: the Power PC assembly code for calling into lisp
2128 sometimes computed its return address wrongly (depending on the
2129 15th bit of the address, fixed at link time). This used to
2130 manifest itself in a segmentation violation while building PCL.
2131 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2132 many others over the years)
2133 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2134 the stack pointer (treated as a signed integer) is negative.
2135 (thanks to Peter van Eynde)
2137 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2138 * new platform: experimental support for the Windows operating
2139 system has been added. (thanks to Alastair Bridgewater)
2140 * fixed several bugs in and robustified the PPC FFI (including
2141 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2142 * bug fix: allow non-simple string symbol names (reported by Paul
2144 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2146 * bug fix: saving a core corrupted callbacks on x86/x86-64
2147 * bug fix: closed a loophole in metacircularity detection and
2148 grounding in the PCL implementation of CLOS.
2149 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2150 (reported by tomppa on #lisp)
2151 * bug fix: clear the direction flag on Lisp -> C transitions, as
2152 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2153 (reported by Andrej Grozin and Hendrik Maryns)
2154 * optimization: major improvements to GC efficiency on GENCGC platforms
2155 * optimization: faster implementation of EQUAL
2156 * optimization: emit more efficient opcodes for some common
2157 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2158 * optimization: several other minor code-generation improvements on x86-64
2159 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2161 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2162 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2163 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2164 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2165 by ANSI as a generic function, and for consistency (SETF
2166 GENERIC-FUNCTION-NAME) is treated likewise.
2167 * fixed bug #233.b: make constraint propagation notice when a variable
2168 value is changed after it is referenced but before it is used
2169 * fixed bug #296: no more arbitrary behaviour from filenames with
2170 odd characters as --load arguments. (reported by Adam Warner)
2171 * fixed bug #390: :CHARACTER-SET pathname components now work as
2172 expected. (reported by Tim Daly Jr)
2173 * fixed bug #391: complicated :TYPE intersections in slot
2174 definitions no longer cause an error in PCL internals.
2175 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2176 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2177 returning the number of octets which would be written to the
2178 file-stream. (thanks to Robert J. Macomber)
2179 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2180 arguments to the internal stream functions. (thanks to David
2182 * bug fix: stack exhaustion is now handled on the x86/SunOS
2183 platform. (thanks to Daisuke Homma)
2184 * bug fix: more accurate ROOM results on GENCGC platforms
2185 * optimization: improved type inference for arithmetic-for
2186 index variables in LOOP
2187 * optimization: faster floating-point SQRT on x86-64
2188 * fixed some bugs revealed by Paul Dietz' test suite:
2189 ** DOCUMENTATION returns NIL instead of "" for method combinations
2190 that don't have a docstring
2192 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2193 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2194 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2195 therefore are not customizeable by user code (as seems to be at
2196 least permitted and maybe required by AMOP). As a consolation,
2197 however, the SBCL implementation of these functions now calls
2198 REINITIALIZE-INSTANCE as specified by AMOP.
2199 * bug fix: slot-definition documentation is propagated as per ANSI
2200 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2201 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2202 argument, as do eslotd initialization methods. (from Pascal
2203 Costanza's "Closer" project)
2204 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2205 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2207 * bug fix: it is now possible to have more than one subclass of
2208 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2209 (reported by Bruno Haible, Pascal Costanza and others)
2210 * bug fix: the dependent update protocol now works for generic
2211 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2212 and Pascal Costanza)
2213 * bug fix: condition-class instances corresponding to
2214 DEFINE-CONDITION forms are now created eagerly. (reported by
2215 Kalle Olavi Niemitalo on comp.lang.lisp)
2216 * bug fix: floating point printing is more accurate in some
2217 circumstances. (thanks to Simon Alexander)
2218 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2219 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2220 * bug fix: callbacks on OS X now preserve stack-alignment.
2221 (thanks to Cyrus Harmon)
2222 * enhancement: the x86-64 disassembler is much better at
2223 disassembling SSE instructions. (thanks to Lutz Euler)
2224 * enhancement: CHECK-TYPE on a variable now allows type-inference
2225 (thanks to Vincent Arkesteijn)
2226 * optimization: improved performance of EUC-JP external format.
2227 (thanks to NIIMI Satoshi)
2228 * optimization: performance improvements to IO on file streams of
2229 :ELEMENT-TYPE CHARACTER
2230 * optimization: much faster memory allocation on x86-64
2231 * optimization: faster garbage collections (latency and throughput)
2233 * optimization: faster bignum subtraction and division on x86 and x86-64
2234 (thanks to Lutz Euler)
2235 * optimization: more accurate type-inference for loops that use a
2236 floating point index variable or a negative step.
2238 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2239 * bug fix: add a workaround to SBCL looping infinitely at startup on
2240 Linux kernels with apparently buggy implementations of personality().
2241 (thanks to Svein Ove Aas)
2242 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2243 (thanks to David Lichteblau)
2244 * bug fix: local bindings shadow global symbol macros for
2245 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2246 * optimization: non-open coded uses of numeric comparison operators
2247 (e.g. >) no longer cons when called with more than one parameter
2248 on platforms supporting dynamic-extent allocation.
2249 * enhancement: saving cores with foreign code loaded is now supported
2250 on MIPS/Linux in addition to the previously supported platforms.
2251 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2252 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2253 * bug fix: division by zero in sb-sprof when no samples were collected
2254 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2255 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2256 (thanks to Alexander Kjeldaas)
2257 * new feature: ignoring the return values of destructive functions
2258 like NREVERSE signals a compile-time style-warning.
2259 (thanks to Kevin Reid)
2260 * new feature: the alignment of alien structure fields can be
2261 explicitly specified. (thanks to Cyrus Harmon)
2262 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2263 and dump core on SIGQUIT
2265 ** incompatible change: threads do not inherit values of specials
2266 from their parents (see manual)
2267 ** bug fix: threads stacks belonging to dead threads are freed by the
2268 next exiting thread, no need to gc to collect thread stacks anymore
2269 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2270 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2271 ** bug fix: dynamic variable and thread start related gc lossage
2272 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2274 * fixed some bugs revealed by Paul Dietz' test suite:
2275 ** SUBTYPEP is slightly more accurate on heinously complicated
2276 CONS types where some of the members have uncertain (in the
2277 NIL, NIL sense) type relationships to each other.
2279 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2280 no longer purified unless :PURIFY T is explicitly specified.
2281 ** Non-purified cores are significantly smaller than before
2283 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2284 * new feature: timers based on Zach Beane's excellent timer package
2285 * added support for the following external formats: koi8-u,
2286 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2287 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2288 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2289 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2290 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2291 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2292 * incompatible change: a threaded SBCL will no longer revert to
2293 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2294 * bug fix: interrupts are disabled until startup is complete; no
2295 more sigsegvs when receiving a signal to soon
2296 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2298 * bug fix: add a workaround for the memory randomization features in
2299 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2300 workaround will only be in effect on systems with the proc filesystem
2302 * bug fix: printing objects of type HASH-TABLE signals a
2303 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2305 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2306 have been running for over 50 days. (reported by Gilbert Baumann)
2307 * bug fix: the logic for getting names of functions gets less
2308 confused when confronded with alternate-metaclass
2309 funcallable-instances. (reported by Cyrus Harmon)
2310 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2311 consistent, even on internal alternate-metaclass objects.
2312 * bug fix: flush closure information collected by physical
2313 environment analysis prepass before the main pass. (bug reported
2315 * bug fix: compiler pack phase does not modify a hashtable, which is
2316 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2317 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2318 may be expanded. (reported by Alexander <malishev> on c.l.l)
2319 * bug fix: no more style-warnings when compiling code using LAST
2320 under high-SPEED low-SPACE settings. (reported by David Wallin
2322 * fixed some incompatibilities between SBCL's MOP and the MOP
2324 ** the METAOBJECT class is now implemented;
2325 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2326 STANDARD-OBJECT, as required;
2327 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2328 now compatible (as required by VALIDATE-SUPERCLASS); there
2329 remains a consistency requirement over the presence or absence
2330 of the FUNCTION class in the superclass list of finalized
2331 classes; see the manual for more details;
2332 ** the :AROUND method for COMPUTE-SLOTS on
2333 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2334 requested slot ordering.
2336 ** bug fix: parent thread now can be gc'ed even with a live
2338 ** bug fix: binding a special with PROGV to no value is not
2339 the same as that symbol not having been bound (thanks to
2341 ** bug fix: binding specials is thread safe (thanks to
2343 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2344 and SB-SPROF do not die with 'no handler for signal XX in
2345 interrupt_handle_now(..)' anymore
2346 ** bug fix: WITH-TIMEOUT works with multiple running threads
2347 * fixed some bugs revealed by Paul Dietz' test suite:
2348 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2349 the :method-class keyword argument.
2351 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2352 * new port: the Solaris operating system on x86 processors is now
2353 mostly supported, though some rough edges in the environment
2354 remain. (thanks to Daisuke Homma)
2355 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2356 space for its heap. (thanks to Thiemo Seufer)
2357 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2358 closures. (thanks to Thiemo Seufer)
2359 * minor incompatible change: eof selects abort in the debugger.
2360 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2361 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2363 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2364 deprecated, and will go away in a future revision of SBCL.
2365 * minor incompatible change: GC-ON and GC-OFF are no longer
2366 implemented with a counter, it does not matter how many times gc
2367 is switched on or off
2368 * bug fix: discriminating functions for generic function classes
2369 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2370 make invalid assumptions about method precedence order. (reported
2372 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2373 platforms. (thanks to Thiemo Seufer)
2374 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2375 * bug fix: correct pathname printing with printer escaping is on.
2376 (thanks to Kevin Reid)
2377 * bug fix: complex VOP definitions in "user-space" no longer trigger
2378 package locks. (reported by Zach Beane)
2379 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2380 for funcallable-instance functions, and is no different from
2382 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2383 characters in the current readtable. (reported by Nicholas Neuss)
2384 * bug fix: SUBTYPEP on various CONS types returns more a more
2385 accurate acknowledgment of its certainty.
2386 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2387 lists in some cases. This partially fixes bug 384.
2388 * flush all standard streams before prompting in the REPL and the
2390 * bug fix: signal handling and triggering gc do not conflict
2391 directly anymore, in particular a high frequency sb-sprof does
2392 not prevent gc from running
2393 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2394 approximation for timezone and DST information between the
2395 universal time epoch and the smallest negative 32-bit time_t.
2396 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2397 year 1899 so long as the encoded time is non-negative.
2398 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2399 the correct answer for non-constant rotate amounts when performing
2400 an inline 32-bit rotation.
2402 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2403 there is only one thread in the session
2404 ** bug fix: memory leak for streams created in one thread and
2405 written to in another
2406 ** bug fix: lockup when compiled with gcc4
2407 ** bug fix: race that allows the gc to be triggered when gc is
2409 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2410 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2412 ** bug fix: finished threads are gc'ed properly
2413 * fixed some bugs revealed by Paul Dietz' test suite:
2414 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2415 has arguments with a different set of applicable methods from
2416 the orignal arguments.
2417 ** The type error thrown by MAP now has a correct expected-type
2419 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2420 name a compiled function.
2421 ** Three MISC tests where a large bignum was improperly coerced to
2422 a float that couldn't represent that bignum during type
2423 derivation were fixed.
2424 ** SUBTYPEP can now handle types involving the negation of a
2425 list-form FUNCTION type.
2426 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2427 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2428 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2430 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2431 * New feature: Experimental support for bivalent streams: streams
2432 opened with :element-type :default now allow character and binary
2433 (unsigned-byte 8) I/O
2434 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2435 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2437 * bug fix: no more highly sporadic "couldn't check whether ~S is
2438 readable" when reading a stream and an interrupt hits in the middle
2439 of a select system call
2440 * compiler better recognizes complex arrays (reported by Eduardo
2442 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2443 for variables on SBCL built with linkage-tables. (reported by Luis
2445 * various error reporting improvements.
2446 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2447 (Thanks to Thiemo Seufer)
2448 * bug fix: nested reader invokations work correctly
2449 * bug fix: it is possible to have simultaneous references to foreign
2450 code and foreign data with the same name.
2452 ** added x86-64 support
2453 ** incompatible change: the threading api now works with thread
2454 objects instead of thread ids
2455 ** bug fix: threads are protected from signals and interruption when
2456 starting up or going down
2457 ** bug fix: a race where an exiting thread could lose its stack to gc
2458 ** bug fix: don't halt on infinite error in threads if possible
2459 ** fixed numerous gc deadlocks introduced in the pthread merge
2460 ** bug fix: fixed thread safety issues in read and print
2461 ** bug fix: debugger doesn't hang on session lock if interrupted at
2462 an inappropriate moment
2463 ** bug fix: run-program is now thread safe(r)
2464 ** bug fix: inner with-recursive-lock no longer releases the mutex
2465 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2466 * fixed some bugs revealed by Paul Dietz' test suite:
2467 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2468 EXPECTED-TYPE slots filled.
2469 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2471 ** MAKE-CONDITION accepts classes as type-designators.
2472 ** COMPILE may never return NIL.
2473 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2474 range before calling Unix time functions
2476 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2477 * numerous signal handling fixes to increase stability
2478 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2479 * minor incompatible change: we now correctly canonize default
2480 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2481 as per the MOP, rather than the historical (INITARG INITFUNCTION
2482 INITFORM). (reported by Bruno Haible)
2483 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2484 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2485 for more information.
2486 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2487 pathname is a directory pathname.
2488 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2489 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2491 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2492 :METACLASS argument in addition to a class name. (reported by
2493 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2494 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2495 (reported by Bruno Haible; patch from Gerd Moellmann)
2496 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2498 * bug fix: more cleanups to the floating point exception handling on
2499 x86-64 (thanks to James Knight)
2500 * bug fix: the compiler does not try to constant fold calls of
2501 COERCE and BIT-* functions when they return freshly constructed
2502 objects. (reported by Nikodemus Siivola and Paul Dietz)
2503 * optimization: improved the MIPS versions of generic (in the
2504 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2505 * optimization: direct conversion of (unsigned-byte 32) to floats on
2506 the PowerPC platform.
2507 * optimization: structure instances with raw slots now use less
2508 memory, and probably show better memory locality. (thanks to
2510 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2511 are treated as requests for stack allocation on the x86-64,
2512 Alpha-32, PPC and SPARC platforms.
2513 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2514 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2515 (thanks to Tony Martinez)
2517 ** gcing a dead thread can no longer lead to lockups
2518 ** threads block signals until they are set up properly
2519 ** errno is no longer shared by threads
2520 ** interrupt-thread restores the eflags register on x86
2521 ** fixed some lockups due to gc/thread interaction
2522 * fixed some bugs revealed by Paul Dietz' test suite:
2523 ** invalid dotted lists no longer raise a read error when
2524 *READ-SUPPRESS* is T
2525 ** signal an error if a symbol that names a declaration is used
2526 as the name of a type, or vice versa
2527 ** allow using the (declare (typespec var*)) abbreviation for
2528 (declare (type typespec var*)) with all type specifiers
2529 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2530 ** always return NIL from PPRINT-POP when OBJECT is NIL
2531 ** don't signal errors when pretty-printing malformed LABELS,
2532 FLET or MACROLET forms
2533 ** declarations in a DOLIST body are also in scope for the
2535 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2537 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2540 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2541 * fixed cross-compiler leakages that prevented building a 32-bit
2542 target with a 64-bit host compiler.
2543 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2544 opened with :IF-EXISTS :OVERWRITE.
2545 * fixed bug 281: error for an invalid qualifier in a short-form method
2546 combination method is not signalled until the faulty method is called.
2547 * bug fix: iteration variable type inferrer failed to deal with open
2548 intervals. (reported by Alan Shields)
2549 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2550 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2551 or more runtime options were provided to the sbcl binary.
2552 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2553 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2554 * optimization: there's now a fast-path for fixnum arguments in the
2555 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2556 * optimization: the code generated on x86-64 is more compact thanks
2557 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2558 * bug fix: floating-point exception handling now partly works on
2559 x86-64. (Thanks to James Knight)
2560 * improvement to the MIPS backend from Thiemo Seufer: C-style
2561 64-bit long long arguments and return values to alien functions
2563 * fixed some bugs revealed by Paul Dietz' test suite:
2564 ** the type-error signalled from WARN has a filled-in DATUM slot.
2565 ** the type-error required when a stream is not associated with
2566 a file has the stream as its datum.
2567 ** type-errors on single-floats on x86-64 no longer have
2568 :INVALID-OBJECT as the datum
2569 ** the type-errors signalled for invalid function names now have
2570 a correct expected type
2571 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2572 for structures defined with a :TYPE. Documentation strings for
2573 typed structures are no longer immediately discarded
2574 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2575 broadcast streams and synonym streams. FILE-LENGTH now also works
2576 on broadcast streams.
2578 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2579 * incompatible change: the --noprogrammer option, deprecated since
2580 version 0.7.5, has been removed. Please use the equivalent
2581 --disable-debugger option instead.
2582 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2584 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2585 inoperational for a while now) has been completely removed.
2586 * null lexical environments are now printed as #<NULL-LEXENV>,
2587 significantly reducing the amount of clutter in typical backtraces.
2588 * documentation on weak pointers, finalization, and after GC hooks
2589 has been added to the manual.
2590 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2591 as other specialized array types, is much faster. SUBSEQ and
2592 COPY-SEQ on such arrays have also been sped up.
2593 * optimization: EQL is now more efficient when at least other argument
2594 is known to be of type (OR FIXNUM (NOT NUMBER)).
2595 * fixed bug: the runtime is now less vulnerable to changes in the
2596 size of the SBCL object on OS X, and virtual memory is reserved for
2597 all spaces that need to be at a fixed address.
2598 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2599 * fixed bug: finalizers and after GC hooks that cause consing are now
2601 * fixed bug: compiler error messages and summaries are now printed to
2602 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2603 * fixed inference of the upper bound of an iteration variable.
2604 (reported by Rajat Datta).
2605 * fixed bug 211e: calling local functions with duplicated constant
2606 keyword argument no longer causes a bogus style warning about an
2608 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2609 ftype declaration to be disregarded. (reported by Dave Roberts)
2610 * fixed bug 373: caused by erronous compilation of references to alien
2611 variables in the runtime on ppc/darwin.
2612 * fixed bug 376: CONJUGATE type deriver.
2613 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2614 (reported by Baughn on #lisp)
2615 * a cross-compiler bug on non-x86 platforms has been identified and
2616 fixed. (thanks to Bruno Haible)
2617 * improvements to the MIPS runtime code for increased stability.
2618 (thanks to Thiemo Seufer)
2619 * increased the maximimum compact environment size to allow
2620 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2621 * partial workaround for bug 135: don't name the function we're
2622 calling for hairy cases of EVAL, so as not to accumulate one environment
2623 entry per call to EVAL. (reported by Kevin Reid)
2624 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2625 * optimization: type testing for non-vector arrays should be faster.
2626 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2628 * bug fix: setting 31st element of a bit vector to zero did not work
2630 * bug fix: redefining a class definition which failed due to a
2631 previous accessor / function clash now works (but see BUGS entry
2632 #380 for more problems in this area). (thanks to Zach Beane)
2633 * the long form of DEFINE-METHOD-COMBINATION disables method group
2634 checking when given a single method group with pattern *. (thanks
2636 * on x86 compiler supports stack allocation of results of simple
2637 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2638 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2639 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2640 * fixed some bugs related to Unicode integration:
2641 ** the restarts for recovering from input and output encoding
2642 errors only appear when there is in fact such an error to
2644 * fixed some bugs revealed by Paul Dietz' test suite:
2645 ** MISC.549 and similar: late transformation of unsafe type
2646 assertions into derived types caused unexpected code
2648 ** SCALE-FLOAT type deriver is less wrong.
2649 ** type derivers for EXP, LOG and similar functions compute result
2650 types for complex arguments better.
2651 ** (MISC.563) CONJUGATE type deriver works for very restricted
2653 ** out-of-line type testers for character strings are available.
2654 ** EQUAL compiler transform understands specialness of objects
2656 ** accessing double-floats stored on the stack now works on x86-64.
2657 ** debugger internals could sometimes create invalid lispobjs,
2658 resulting in GC crashes.
2659 ** MISC.548: type check weakening can convert required type into
2661 ** initialization forms for bindings are not in scope of free special
2664 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2665 * incompatible change: thread support for non-NPTL systems has
2666 been removed - locking is buggy and unreliable. A threaded
2667 SBCL build will now warn at startup and refuse to create
2668 new threads, unless futex support is detected in the kernel
2669 * incompatible change: the top level REPL now has only an ABORT
2670 restart associated with it, not TOPLEVEL and ABORT as it used to.
2671 TOP and TOPLEVEL are now available as debugger commands for
2672 returning to the top level.
2673 * incompatible change: forms evaluated in the REPL now use the
2674 global optimization policy.
2675 * incompatible change: user- and system-initialization files are
2676 no longer processed with LOAD, but by READ and EVAL; hence the
2677 global optimization policy, startup package, readtable, etc,
2679 * The .fasl file format number has been incremented because of
2680 various incompatible changes.
2681 * internal entry point details and argument counts no longer appear
2682 in backtraces unless explicitly requested by setting
2683 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2684 * built-in and standard functions no longer have names like "top
2685 level local call to FOO".
2686 * fixed bug 32: functions defined in non-null lexical environments
2687 now have more legible printed representation
2688 * fixed bug 33: functions defined in non-null lexical environemnts
2689 are now more amenable to inspection by INSPECT.
2690 * workaround for bug 354: XEPs no longer appear in backtraces unless
2691 explicitly requested.
2692 * fixed bug: receiving the signal which results from attempting to
2693 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2694 SIGBUS on other *BSDs) on architectures where the C stack is also
2695 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2696 to debugger confusion or wild instability. (reported by Cheuksan
2698 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2699 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2700 (reported by Lutz Euler)
2701 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2702 compiled code. (reported by Paul Dietz)
2703 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2704 specialized parameter to a method to something that is not TYPEP
2705 the specializer is now possible.
2706 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2707 face of package deletion.
2708 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2709 pathname. (reported by David Tolpin on c.l.l)
2710 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2711 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2712 STRING-STREAM and FILE-STREAM, respectively.
2713 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2714 than previously; in addition, its test suite is now run on build.
2715 (thanks to Luke Gorrie)
2716 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2717 * optimization: added a immediate representation for single-floats
2719 * fixed some bugs revealed by Paul Dietz' test suite:
2720 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2721 ** attempting to create a package with a colliding nickname causes
2722 correctable errors to be signalled.
2723 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2724 ** several x86-64 backend bugs related to sign-extension of immediate
2727 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2728 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2729 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2731 * fixed loading of multiply forward-referenced layouts.
2732 (thanks to Cheuksan Wang)
2733 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2734 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2735 (see COMPILE-FILE documentation for details of :PRINT option)
2736 * fixed bugs 19 and 317: fixed-format floating point printing is
2737 more accurate. This also fixes a bug reported by Adam Warner
2738 related to the ~@F format directive.
2739 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2741 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2742 dispatch table if the from-char is a dispatch macro character.
2743 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2744 by the wordsize no longer ignore the last word. (reported by Lutz
2746 * fixed bug in type checking of dynamic-extent variables. (reported
2748 * optimization: sequence traversal functions use their freedom to
2749 coerce function designators to functions.
2750 * optimization: code with many calls to CLOS methods specialized on
2751 CLOS classes has had redundant type checks removed.
2752 * optimization: added declarations to speed up operations that access
2753 the internal character database (for example STRING-UPCASE)
2754 * optimization: comparison operations between floats and sufficiently small
2755 fixnums no longer create extra rationals
2756 * fixed some bugs related to Unicode integration:
2757 ** portions of multibyte characters at the end of buffers for
2758 character-based file input are correctly transferred to the
2759 start of the buffer at the next read.
2760 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2761 passing it through to OPEN.
2762 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2763 argument given to internal calls to OPEN.
2764 ** the built-in comment readers (introduced by character sequences
2765 ";" and "#|") are more forgiving to encoding errors; they will
2766 STYLE-WARN and then attempt to resync the stream at a character
2767 boundary. (thanks to Teemu Kalvas)
2768 * fixed some bugs in the x86-64 port:
2769 ** Negative short int return values from c-calls are sign-extended
2771 ** The stack is aligned to 16-bytes for c-calls, as required by
2772 the ABI. (thanks to Cheuksan Wang)
2773 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2774 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2775 for enums. (thanks to Vincent Arkesteijn)
2776 ** Multiple small optimizations and bugfixes for floating point
2778 * fixed some bugs revealed by Paul Dietz' test suite:
2779 ** Space, Tab, Linefeed, Return and Page have the invalid
2780 secondary constituent character trait.
2781 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2783 ** WITH-INPUT-FROM-STRING should only update the index place on
2785 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2786 works more reliably.
2787 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2788 with one-dimensional arrays with fill pointers.
2789 ** TYPE-OF failed on a complex with an integer realpart and a
2791 ** compiler failure during type inference for the code of form
2792 (IF (EQL X (THE ...)) ...) (MISC.535).
2794 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2795 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2796 platform. The port supports 61-bit fixnums, large memory spaces
2797 and reloading shared object files.
2798 * enhancement: saving cores with foreign code loaded is now
2799 supported on ppc/Darwin in addition to the previously supported
2801 * enhancement: the statistical profiler now walks deeper into the
2802 call stack for more meaningful call-graphs and accrued time
2803 reports (x86/x86-64 only). It also now reports time spent in
2805 * enhancement: it is now possible to trace most individual methods
2806 of a generic function in addition to tracing the generic function
2808 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2810 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2811 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2812 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2813 produces an error. (thanks to Vincent Arkesteijn)
2814 * bug fix: NAMESTRING on pathnames with :WILD components in their
2815 directories works correctly. (thanks to Artem V. Andreev)
2816 * fixed bug 125: compiler preserves identity of closures. (reported
2818 * bug fixed: functions with &REST arguments sometimes failed with
2819 "Undefined function" when compiled with (DEBUG 3). (reported by
2821 * bug fix: overflow during compiling of setting element of a bit
2822 vector with constant index and value. (reported by Timmy Douglas)
2823 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2824 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2825 * on x86 compiler partially supports stack allocation of dynamic-extent
2827 * GO and RETURN-FROM do not check the extent of their exit points
2828 when compiled with SAFETY 0.
2829 * fixed some bugs related to Unicode integration:
2830 ** encoding and decoding errors are now much more robustly
2831 handled; it should now be possible to recover even from invalid
2832 input or output to the terminal. (thanks to Teemu Kalvas)
2833 ** provided a first cut at implementing STRING-TO-OCTETS and
2834 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2835 ** altered the SB-MD5 contributed module slightly, changing the
2836 interface just enough for it to be supportable for builds where
2837 lisp characters are not eight bits.
2838 * fixed some bugs revealed by Paul Dietz' test suite:
2839 ** the FORMATTER-generated functions for ~V[ conditionals require
2840 the correct number of arguments.
2841 ** READ-FROM-STRING returns the mandated second value when applied
2842 to displaced strings.
2843 ** the #\Rubout and #\Backspace characters are treated as invalid
2844 constituent characters by the tokenizer.
2846 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2847 * new feature: reloading changed shared object files with
2848 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2849 * new feature: references to foreign variables and functions
2850 can now be compiled and loaded before the corresponding shared
2851 object file is loaded, as long as the foreign definitions are
2852 available at runtime.
2853 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2854 supported. (thanks to Dan Debertin)
2855 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2856 just keywords. (thanks to Vincent Arkesteijn)
2857 * fixed bug #331: structure-class instances corresponding to
2858 DEFSTRUCT forms are now created eagerly.
2859 * fixed bug #345: backtraces from calls to undefined functions work
2860 on x86 as well. Related bug #61 is now also partially fixed on x86
2861 (backtraces from throws to unknown catch tags.)
2862 * bug fix: lambda-list parsing is now stricter vrt. order and number
2863 of lambda-list keywords.
2864 * bug fix: as specified by AMOP, an error is signalled if a
2865 class-option appears multiple times in a DEFCLASS form. (reported
2867 * bug fix: RANDOM can be compiled when the compiler derives the type
2868 of its numeric argument as a disjoint set of small integers.
2869 (reported by Paul Dietz)
2870 * bug fix: starting a core saved with shared objects loaded when
2871 those objects are not available no longer causes threaded SBCL to
2872 hang. (reported by Sean Ross)
2873 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2875 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2876 argument, which must always be NIL. (reported by Kalle Niemitalo)
2877 * bug fix: printing 1.0d+23 no longer results in an error.
2878 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2879 * bug fix: structure slot setters preserve evaluation order. (thanks
2881 * fixed some bugs related to Unicode integration:
2882 ** RUN-PROGRAM can allow its child to take input from a Lisp
2883 stream. (reported by Stefan Scholl)
2884 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2885 locales. (reported by Ken Causey)
2886 * fixed some bugs revealed by Paul Dietz' test suite:
2887 ** INCF, DECF and REMF evaluate their place form as specified in
2889 ** FORMATTER expands ~{ ~} iteration directives with V or #
2890 parameters correctly.
2891 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2892 consequent uses no arguments correctly.
2893 ** the system has a partial understanding of the (COMPLEX RATIO)
2895 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2898 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2899 * new feature: a build-time option (controlled by the :SB-UNICODE
2900 keyword feature, enabled by default) for building the system with
2901 support for the entire 21-bit character space defined by the
2903 * new feature: the system now has rudimentary external-format
2904 support; the primary user-visible change at this time is that
2905 characters with the high bit set (such as lower-case-e-acute) will
2906 print correctly to a terminal in a UTF-8 environment.
2907 * minor incompatible change: BASE-CHAR no longer names a class;
2908 however, CHARACTER continues to do so, as required by ANSI.
2909 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2910 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2911 has been moved to the SB-EXT package (temporarily re-exported from
2913 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2914 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2916 * fixed bug #351: better error-handlind and reporting for malformed
2918 * fixed bug #350: bignum-printing is now more memory-efficient,
2919 allowing printing of very large bignums, eg. (expt 2 10000000).
2920 (reported by Bruno Haible)
2921 * fixed bug #302: better primitive-type selection for intersection
2923 * fixed bug #308: non-graphic characters now all have names, as
2924 required. (reported by Bruno Haible)
2925 * bug fix: redefining a class with different superclasses now correctly
2926 removes it from the direct-subclasses of its previous superclasses.
2927 (reported by David Morse)
2928 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2929 new value now works. (reported by Bruno Haible)
2930 * bug fix: correct canonicalization of multiple non-standard slot
2931 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2932 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2933 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2934 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2935 now exists, an signals an error.
2936 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2937 during macroexpansion for non-iteration variables as well. (reported
2938 by Bruno Haible for CMUCL)
2939 * bug fix: Cyclic structures and unprintable objects in compiler
2940 messages no longer cause errors. (reported by Bruno Haible)
2941 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2942 and READ-FROM-STRING all now return a primary value of NIL if
2943 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2944 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2945 (reported by Bruno Haible for CMUCL)
2946 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2947 do not designate a condition. (reported by Bruno Haible for
2949 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2950 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2951 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2952 permitting resolution in favour of any of the conflicting symbols.
2953 (reported by Bruno Haible for CMUCL)
2954 * bug fix: EQUAL compiler optimizations is less aggressive on
2955 strings which can potentially compare true despite having distinct
2956 specialized array element types.
2957 * bug fix: unit enumerations can be defined without dividing by
2958 zero. (thanks to Vincent Arkesteijn)
2959 * FORMAT compile-time argument count checking has been enhanced.
2960 (report from Bruno Haible for CMUCL)
2961 * a partial workaround for the bug 262: the compiler does not try to
2962 inline-expand a local function doing RETURN-FROM from a deleted
2963 BLOCK. (thanks to Peter Denno for the bug report and to David
2964 Wragg for the simple test case)
2965 * fixed some bugs revealed by Paul Dietz' test suite:
2966 ** RENAME-PACKAGE allows all package designators as new package
2968 ** constraint propagation and lambda variable substitution are
2969 more cautious in dealing with partially deleted code.
2970 ** compiler sometimes lost reoptimization passes.
2971 ** CERROR, given a condition as condition designator, passes its
2972 remaining arguments to the continue format control without
2974 ** Case-altering FORMAT directives work correctly on non-ASCII
2976 ** The REAL type specifier handles bounds outside the floating
2977 point ranges without signalling FLOATING-POINT-OVERFLOW.
2978 ** Functions with IR1-transformations can create intercomponent
2979 references to global functions.
2980 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2982 ** FORMAT ~R treats a nil value for its first parameter correctly.
2984 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2985 * enhancement: saving cores with foreign code loaded is now
2986 supported on x86/NetBSD and sparc/Linux in addition to the previously
2987 supported platforms.
2988 * bug fix: on some platforms repeated installations caused multiple
2989 copies of HTML documentation to be installed -- should not happen
2990 any more. (reported by Stefan Scholl)
2991 * bug fix: parsing self-recursive alien record types multiple times
2992 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2993 original patch by Helmut Eller for CMUCL)
2994 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2995 (thanks to Richard Kreuter)
2996 * bug fix: defining classes whose accessors are methods on existing
2997 generic functions in other (locked) packages no longer signals
2998 bogus package lock violations. (reported by François-René Rideau)
2999 * bug fix: special variables as DEFMETHOD parameters no longer have
3000 associated bogus type declarations. (reported by David Wragg and
3002 * bug fix: read-write consistency on streams of element-type
3003 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3004 * bug fix: redefiniton of the only method of a generic function with
3005 no DEFGENERIC no longer emits a full WARNING. In addition,
3006 redefinition of generic functions with no DEFGENERIC to an
3007 incompatible lambda list now signals an error. (thanks to Zach
3009 * bug fix: DEFGENERIC now works even when there's a function of the
3010 same name in an enclosing lexical environment. (thanks to Zach
3012 * fixed compiler failure, caused by instrumenting code during
3013 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3014 * optimization: added loop analysis and improved register allocation
3015 * fixed some bugs revealed by Paul Dietz' test suite:
3016 ** POSITION on displaced vectors with non-zero displacement
3017 returns the right answer.
3018 ** (SIMPLE-STRING) is a valid type specifier for sequence
3020 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3022 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3023 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3025 ** The justification version of the FORMAT ~< directive treats
3026 non-zero minpad parameter correctly.
3028 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3029 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3030 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3031 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3032 the supported interface.
3033 * new feature: Single-stepping of code compiled with DEBUG 2 or
3034 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3035 * new feature: saving cores with foreign code loaded is now
3036 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3037 Timothy Moore's work for CMUCL)
3038 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3039 parameters to * instead of NIL if no initform is supplied.
3040 (reported by Johan Bockgaard)
3041 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3042 correctly when FUNCALL appears as the car of the form. Note:
3043 despite this FUNCALL forms are not currently subject to
3044 compiler-macro expansion. (port of Raymond Toy's fix for the
3045 same from CMUCL, reported by Johan Bockgaard)
3046 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3047 (thanks for Teemu Kalvas)
3048 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3049 case instead of terminating the iteration (thanks for Julian
3050 Squires, Sean Champ and Raymond Toy)
3051 * bug fix: incorrect expansion of defgeneric that caused a style
3052 warning. (thanks for Zach Beane)
3053 * bug fix: slot accessor effective method computation works properly
3054 for classes with multiple non-standard applicable methods on
3055 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3056 * on x86 compiler supports stack allocation of results of LIST and
3057 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3058 CMUCL implementation by Gerd Moellmann)
3059 * fixed some bugs revealed by Paul Dietz' test suite:
3060 ** FORMAT strings with both the ~<~:;~> form of the justification
3061 directive and pretty-printing directives cause an error.
3063 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3064 * incompatible change: the internal functions
3065 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3066 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3067 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3068 instead of the old functions.
3069 * new feature: on platforms where "dladdr" is available foreign
3070 function names now appear in backtraces. (based on Helmut Eller's
3072 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3073 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3075 * documentation: ASDF manual is now distributed with SBCL.
3076 * bug fix: SBCL can now load its contributed modules with REQUIRE
3077 even if the system-provided entries have been removed from
3078 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3080 * bug fix: backtraces involving undefined functions or assembly
3081 routines are more informative. (thanks to Brian Downing)
3082 * bug fix: mutually referent alien structures now work correctly.
3083 (reported by Rick Taube)
3084 * bug fix: structures defined by WITH-ALIEN can be referred to
3085 within other definitions in the same WITH-ALIEN.
3086 * bug fix: division operators (MOD, TRUNCATE and the like) with
3087 constant zero divisors and integer dividends no longer generate
3089 * bug fix: provide default methods for INPUT-STREAM-P and
3090 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3091 * bug fix: improve the detection and resolution of MOP metacycles
3092 (where effective method computation depends on the generic function
3093 having its effective method computed). (reported by Bruno Haible)
3094 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3095 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3096 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3097 * bug fix: pathnames with relative directory components can be
3098 represented relative to default pathnames.
3099 * optimization: in taking the GCD of bignums, reduce the two bignums
3100 to approximately the same size (using Euclid's algorithm) before
3101 applying the more sophisticated binary GCD. (thanks to Juho
3103 * optimization: COUNT on bitvectors now operates word-at-a-time.
3104 * optimization: ASH with a positive, but not necessarily constant,
3105 (leftwards) shift, when in a modular context, is compiled to a
3107 * fixed some bugs revealed by Paul Dietz' test suite:
3108 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3109 if the corresponding argument is NIL.
3110 ** FORMAT directives accepting a minpad parameter treat negative
3112 ** literal commas as character parameters to FORMAT directives are
3114 ** literal spaces directly after ~<Newline> directives within a
3115 format-logical-block (~:< ~@:>) do not induce :FILL-style
3116 conditional newlines.
3117 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3118 as specified: it no longer includes conditional newlines).
3119 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3121 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3122 :PER-LINE-PREFIX argument does not evaluate to a string.
3124 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3125 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3126 the manual for details; for now, package locks can be disabled by
3127 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3128 if no major problems are found then it is likely that they will be
3129 compiled in unconditionally.
3130 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3131 unsupported operators on all platforms. To load a shared library
3132 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3133 object file, link it into a shared library outside of SBCL and
3134 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3136 * bug workaround: ROOM T and the GC were not working together
3137 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3138 reporting facility aren't preserved. That reporting has been
3139 disabled, so now until and unless someone figures out how to make it
3140 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3141 * minor incompatible change: as threatened around sbcl-0.8.0, the
3142 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3143 The symbols are also exported from SB-PCL for backwards
3144 compatibility, but more so than before SB-PCL should be treated as
3145 an implementation-internal package.
3146 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3148 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3149 It is known as of this release not to work on the Alpha, however.
3150 * fixed bug #167: errors signalled due to illegal syntax in method
3151 bodies are now more legible.
3152 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3153 designators and can hence be used with TYPEP.
3154 * fixed bug #333: CHECK-TYPE now ensures that the type error
3155 signalled, if any, has the right object to be accessed by
3156 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3157 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3158 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3160 * fixed bug #334: programmatic addition of slots using specialized
3161 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3162 and :ALLOCATION :CLASS slots.
3163 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3164 float exponents. (rereported by Peter Seibel)
3165 * fixed a bug: #\Space (and other whitespace characters) are no
3166 longer considered to be macro characters in standard syntax by
3167 GET-MACRO-CHARACTER.
3168 * fixed bug: initialization of condition class metaobjects no longer
3169 causes an instance of the condition to be created. (reported by
3171 * fixed bug: it is now possible to have slots such that
3172 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3173 description is neither :INSTANCE nor :CLASS.
3174 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3175 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3176 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3177 non-standard SLOT-DEFINITION-ALLOCATION values.
3178 * fixed bugs: various race conditions handling exiting threads.
3179 CL-PPCRE's thread torture test now passes.
3180 * fixed arguably-a-bug: GC time proportional to number of threads in
3181 system even when most of them are idle
3182 * optimization: improved performance of BIT and SBIT on bit-vectors.
3183 * .fasl file incompatibility: The fasl file version number has
3184 been incremented because of changes associated with package locks.
3186 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3187 * minor incompatible change: the system no longer provides
3188 optimization hints (conditions which are TYPEP
3189 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3190 mode; these hints are still emitted when higher SPEED optimization
3192 * new contrib module: a sampling profiler (profiling by statistical
3193 sampling, rather than by instrumenting functions) is available as
3194 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3195 * the behaviour of the standard function ED is now customizeable by
3196 third parties through a hook variable: see ED's documentation
3197 string for information on the protocol.
3198 * the compiler no longer emits efficiency notes for (FUNCALL X)
3199 when the type of X is uncertain under default optimization
3201 * fixed bug 276: mutating a binding of a specialized parameter to a
3202 method to something that is not TYPEP the specializer is now
3204 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3205 exhibit the required behaviour on the x86 platform. (thanks to
3206 Peter van Eynde, Eric Marsden and Bruno Haible)
3207 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3208 even for difficult arguments. (reported by Peter Graves)
3209 * fixed bug 141a: the backquote printer now descends quoted
3211 * fixed another bug in backquote printing: no more destructive
3212 modification of the form's list structure. (reported by Brian
3214 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3215 move between its address being taken and the call to
3216 interrupt_thread, fixing a crashing race condition.
3217 * the SB-POSIX contrib implementation has been adjusted so that it
3218 no longer exhibits ridiculously poor performance when constructing
3219 instances corresponding to C structs.
3221 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3222 * minor incompatible change: the sb-grovel contrib now treats C
3223 structures as alien (in the sense of SB-ALIEN) objects rather than
3224 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3225 has implications for memory management of client code
3226 (sb-grovel-returned objects must now be manually managed) and for
3227 type safety (alien objects now have full types).
3228 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3229 used to control emission of compiler diagnostics, rather than the
3230 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3231 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3232 quality should be considered deprecated.
3233 * install.sh now installs the user manual as well
3234 * (not quite a new documentable feature, but worth considering in
3235 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3236 beginnings of a semantically meaningful condition hierarchy is
3237 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3239 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3240 designator as the defaults argument.
3241 * fixed bug: Displaced arrays whose displaced-to array has become
3242 too small now cause ARRAY-DIMENSION to signal an error, providing
3243 for safer bounds-checking. (reported by Bruno Haible)
3244 * fixed bug: DEFCLASS slot definitions with identical :READER and
3245 :WRITER names now signal a reasonable error. (reported by Thomas
3247 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3249 * fixed bug: Invalid slot specification errors now print correctly.
3250 (thanks to Zach Beane)
3251 * fixed bug 320: Shared to local slot value transfers in class
3252 redefinitions now happen corrently from superclasses as
3253 well. (reported by Bruno Haible)
3254 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3256 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3257 improper lists correctly. (reported by Bruno Haible)
3258 * fixed bug 313: source-transform for <fun-name> was erroneously
3259 applied to a call of a value of a variable with name <fun-name>.
3260 (reported by Antonio Menezes Leitao)
3261 * fixed bug 307: The obsolete instance protocol ensures that
3262 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3263 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3264 remove dead unknown-values globs from the middle of the stack.
3265 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3266 easier to resume long computations after using *BREAK-ON-SIGNALS*
3267 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3268 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3269 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3270 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3271 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3272 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3274 * fixed a (fairly theoretical) bug in string printing: if
3275 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3276 does not have array-element-type equal to the most general string
3278 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3279 function name. (thanks to Nikodemus Siivola)
3280 * fixed bug: compile-time format string checker failed on
3281 non-closed ~{. (reported by Thomas F Burdick)
3282 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3283 don't warn on legal loop code involving more than one aggregate
3284 boolean. (thanks to Nikodemus Siivola)
3285 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3286 in keyword position to MAKE-PACKAGE was not being reported as
3288 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3289 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3291 * fixed bugs 280 and 312: the checking for multiple definitions in a
3292 file is less likely to become confused by uses of inline
3294 * fixed bug: the #S reader macro performs the keyword coercion
3295 specified for slot names. (reported by Kalle Niemitalo)
3296 * fixed bug: lambda lists may contain symbols whose names start with
3297 & but are not lambda-list-keywords; their occurrence triggers a
3299 * fixed bug 321: define-method-combination argument lambda lists do
3300 not cause invalid code to be generated when &optional or &aux
3301 variables have default values. (reported by Bruno Haible)
3302 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3303 have CLOS classes; this appears also to have fixed reported
3304 instability in stack exhaustion detection.
3305 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3306 MUFFLE-WARNING when no associated restart is present is now
3308 * optimization: rearranged the expansion of various defining macros
3309 so that each expands into only one top-level form in a
3310 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3312 * optimization: used a previously little-used slot in symbols to
3313 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3315 * fixed some bugs revealed by Paul Dietz' test suite:
3316 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3318 ** Fixed an optimization bug related to inheritance of initforms
3319 from local to shared slots.
3320 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3321 ** CAST optimizer forgot to flush argument derived type.
3322 ** print/read consistency on floats is now orders of magnitude
3323 more likely. (thanks also to Bruno Haible for a similar report
3325 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3326 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3327 for objects of type REAL. Make it so.
3328 ** SXHASH is specified (infelicitously) to respect similarity,
3329 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3330 it so. (thanks to Markus Ziegler)
3331 ** on the Alpha, the compiler succeeds in compiling functions
3332 returning a known number of arguments greater than 63.
3333 ** fixed handling of invalid NIL arguments in keyword position
3335 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3337 ** provided a readably-printable representation for RANDOM-STATE
3339 ** ensured that pathnames, where they have a namestring, always
3340 print using #P"..." syntax.
3342 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3343 * Support for the forthcoming 2.0 version of the NetBSD kernel
3344 running on x86 hardware has been added. (thanks to Perry
3345 E. Metzger most immediately, and others for their past work)
3346 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3347 current release version; SBCL's OpenBSD support had been broken
3348 since about the time of OpenBSD's switch to ELF binary format.)
3349 * [placeholder for DX summary]
3350 ** user code with &REST lists declared dynamic-extent, under high
3351 speed or space and low safety and debug optimization policy.
3352 * The manual has been converted to Texinfo format and the debugger
3353 chapter from the cmucl manual has been added.
3354 * A facility has been added to extract documentation strings from
3355 sbcl and store them as Texinfo-formatted snippets for inclusion in
3356 the manual (via Texinfo's @include directive)
3357 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3358 the test case to Dave Roberts)
3359 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3360 pointers. (reported by Sean Ross)
3361 * bug fix: PROFILE output is printed nicely even for large numerical
3362 values. (thanks to Zach Beane)
3363 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3364 greater than 32 handle EOF correctly.
3365 * bug fix: on X86 an immediate argument of the IMUL instruction is
3366 correctly printed in disassembly. (thanks to Lutz Euler)
3367 * bug fix: class slots in redefined classes preserve their old
3368 values. (thanks to Bruno Haible and Nikodemus Siivola)
3369 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3370 succeeds. (reported by Marco Baringer)
3371 * fixed some bugs revealed by Paul Dietz' test suite:
3372 ** READ-SEQUENCE now works on ECHO-STREAMs.
3373 ** RATIONALIZE works more according to its specification. (thanks
3376 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3377 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3378 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3379 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3380 should matter to you only if you rebind the printer control
3381 variables and then find you want different bindings in the
3382 debugger than in the ordinary execution of your program.)
3383 * The runtime build system has been tweaked to support building
3384 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3385 assembler and linker. (thanks to Nikodemus Siivola)
3386 * Unbound, undefined, undeclared variables now trigger full
3387 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3388 more often programmer error than deliberate exploitation of undefined
3390 * optimization: the hash algorithm for strings has changed to one
3391 that is less vulnerable to spurious collisions. (thanks to Juho
3393 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3394 needless bounds checking. (thanks to Juho Snellman)
3395 * optimization: implemented multiplication as a modular
3396 (UNSIGNED-BYTE 32) operation on the PPC backend.
3397 * fixed some bugs revealed by Paul Dietz' test suite:
3398 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3400 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3401 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3402 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3404 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3406 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3408 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3409 their output stream on EOF from read.
3410 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3411 have been read to end-of-file.
3412 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3414 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3415 description of determination of which consecutive characters
3417 ** Printing the "Space" character with escaping on now yields "#\\ ",
3418 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3419 ** Reading floating-point numbers with *READ-BASE* set to a number
3420 less than 10 works correctly.
3421 ** Reading floating-point numbers with *READ-BASE* set to a number
3422 more than 10 works correctly.
3423 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3424 the readtable currently in effect.
3426 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3427 * minor incompatible change: parsing of namestrings on a physical
3428 (Unix) host has changed; numbers after the final #\. in a
3429 namestring are no longer interpreted as a version field. This is
3430 intented to be largely invisible to the user, except that the
3431 meaning of the namestring "*.*.*" has changed: it now refers to a
3432 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3433 should usually be replaced by
3434 (make-pathname :name :wild :type :wild :version :wild)
3435 with the added benefit that this is more likely to be portable.
3436 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3437 option to OPEN now signals an error if the file being opened
3438 exists; this may have an impact on existing code.
3439 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3440 signals received, on the PowerPC platforms (both Linux and
3441 Darwin). (thanks to Pierre Mai for pointing out the location of
3443 * several fixes on OS X: The system now builds and runs cleanly on
3444 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3445 (thanks to Brian Mastenbrook)
3446 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3447 second-resolution: integer multiples of 1/3600 between -24 and 24.
3448 (thanks to Vincent Arkesteijn)
3449 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3450 type when called with 1 argument; PEEK-CHAR checked type of
3451 PEEK-TYPE only after having read first character from a
3452 stream. (reported by Peter Graves)
3453 * bug fix: the garbage collector now has much better locality
3454 behaviour, and in particular no longer treats all memory as being
3455 exhausted when many small objects point to each other in a deeply
3457 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3458 recognized as being TYPEP their class.
3459 * bug fix: the PUSHNEW documentation string has been corrected.
3460 (thanks to Vincent Arkesteijn)
3461 * bug fix: defaulting of the value for the last of an atypically
3462 large number of multiple values being bound was not being
3463 performed correctly on the Alpha or PPC platforms
3464 * optimization: implemented multiplication as a modular
3465 (UNSIGNED-BYTE 32) operation on the x86 backend.
3466 * optimization: SEARCH on simple-base-strings can now be open-coded.
3467 (see also contrib/compiler-extras.lisp for inspiration for
3468 teaching the compiler about the Boyer-Moore algorithm).
3469 * value, returned by MAX (and MIN) called with several EQUALP, but
3470 not EQL, arguments now does not depend on compiler settings.
3471 * fixed some bugs revealed by Paul Dietz' test suite:
3472 ** in stack analysis liveness information is propagated from
3473 non-local entry points.
3474 ** pathwise CAST removing failed when the CAST node did not start
3476 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3477 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3479 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3480 host is already defined.
3481 ** RENAME-FILE works on streams instead of signalling an internal
3483 ** PEEK-CHAR uses the current readtable when determining whether
3484 or not a character is whitespace.
3485 ** MERGE-PATHNAMES handles the case when the pathname does not
3486 specify a name while the default-pathname specifies a version.
3487 ** Pathnames now stand a better chance of respecting print/read
3489 ** Attempting to use standardized file system operators with a
3490 pathname with invalid :DIRECTORY components signals a
3492 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3494 ** DIRECTORY on logical pathnames is more correct.
3495 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3496 signal a TYPE-ERROR if their argument is not a stream.
3497 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3498 designator argument does not designate a stream.
3499 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3500 examining the synonym.
3501 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3503 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3504 element-type larger than ([UN]SIGNED-BYTE 32).
3506 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3507 * When built with the :SB-FUTEX feature, threaded builds now take
3508 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3509 for faster/more reliable mutex and condition variable support.
3510 * Incompatible change (but one you probably shouldn't have been using
3511 anyway): the interface and code for arbitrating between multiple
3512 threads in the same user session has been redesigned.
3513 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3514 error when called without an explicit environment argument.
3515 (thanks to Nikodemus Siivola)
3516 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3517 confused about their position. (thanks to Adam Warner and Gerd
3519 * bug fix: Pretty printing backquoted forms with unquotations in the
3520 argument list position of various code constructs such as LAMBDA
3521 now works correctly. (reported by Paul Dietz)
3522 * bug fix: Pretty printing unquotations no longer loses all
3523 stream position information.
3524 * optimization: performance of string output streams is now less
3525 poor for multiple small sequence writes.
3526 * optimization: performance of CSUBTYPEP in the presence of complex
3527 expressions involving CONS and NOT many times has been improved.
3528 (reported by Paul Dietz)
3529 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3531 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3532 streams for the REPL, for the debugger, and so on. (thanks to
3534 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3535 * fixed some bugs revealed by Paul Dietz' test suite:
3536 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3537 is ignored if it is too small, rather than propagating through
3538 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3539 ** extremely complex negations of CONS types were not being
3540 sufficiently canonicalized, leading to inconsistencies in
3542 ** VALUES tranformer lost derived type.
3544 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3545 * fixed a bootstrapping bug: the build process no longer assumes
3546 that the various BOOLE-related constants have the same value in
3547 host and target lisps. (noted by Paul Dietz' test suite on an
3548 SBCL binary built from CLISP)
3549 * The system can now be dynamically linked on the MIPS platform,
3550 which enables dynamic loading of foreign code from Lisp. (thanks
3551 to Ralf Baechle for discussions on the MIPS ABI)
3552 * The system now records debugging information for its own source
3553 files in a filesystem-position-independent manner, relative to
3554 the "SYS" logical host.
3555 * fixed a compiler bug: MV-LET convertion did not check references
3556 to the "max args" entry point. (reported by Brian Downing)
3557 * tweaked disassembly notes to be less confident about proclaiming
3558 some instruction as an LRA. (thanks to Brian Downing)
3559 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3560 now each have their own history, command character, and other
3561 characteristics. (thanks to David Lichteblau)
3562 * fixed some bugs revealed by Paul Dietz' test suite:
3563 ** compiler failure in compiling LOGAND expressions including a
3565 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3566 shift greater than 32.
3567 ** FLUSH-DEST did not mark blocks for type check regeneration.
3568 ** HANDLER-CASE failed to accept declarations in handler clauses
3569 in some circumstances.
3571 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3572 * New code in contrib/sb-introspect (still probably not entirely
3573 stable yet) provides some support for smart Lisp development
3574 environments like SLIME.
3575 * The conditions signalled for errors occurring when loading .fasl
3576 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3577 in a way which should help ASDF recover gracefully.
3578 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3579 stuff has been cleaned up. If you code contrib/ stuff, this might
3580 affect you, and you can look at contrib/README, contrib/STANDARDS,
3581 and/or the 0.8.4.27 diff to check.
3582 * In full calls the compiler now does not generate checks for declared
3583 argument types for all arguments.
3584 * various threading fixes
3585 ** and some experimental patches which didn't make it into
3586 the main tree for this release, but which are shipped in
3587 contrib/experimental-thread.patch as a possible fix for some
3588 failures (deadlock, spinning...) in GC-intensive multithreaded
3590 * fixed PPC build problem (source code incompatibility of different
3591 library versions): added offsetof() hackery which attempts to divine
3592 where glibc maintainers put uc_mcontext today
3593 * fixed bug 282: compiler does not trust type assertions while passing
3594 arguments to a full call.
3595 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3596 &OPTIONAL VALUES type parameter.
3597 * fix bug 214: algorithm for noting rejected templates is now more
3598 similar to that of template seletion. (also reported by rydis on
3600 * fixed bug 141b: printing backquoted information readably and prettily
3601 inserts a space where necessary.
3602 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3603 (CHARACTER 10) are now reported as errors, rather than propagated
3604 as unknown types. (reported by piso on #lisp)
3605 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3606 with values NIL and :ERROR. (thanks to Milan Zamazal)
3607 * fixed bug 191c: CLOS now does proper keyword argument checking as
3608 described in CLHS 7.6.5 and 7.6.5.1.
3609 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3610 longer raise an error; further, using a list as a for-as-arithmetic
3611 counter now raises a meaningful error.
3612 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3613 now understood by sequence creation functions such as MAKE-SEQUENCE
3615 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3616 a STRING-INPUT-STREAM.
3617 * compiler enhancement: SIGNUM is now better able to derive the type
3619 * type declarations inside WITH-SLOTS are checked. (reported by
3621 * fixed some bugs revealed by Paul Dietz' test suite:
3622 ** incorrect optimization of TRUNCATE for a positive first
3623 argument and negative second.
3624 ** compiler failure in let-convertion during flushing dead code.
3625 ** compiler failure while deriving type of TRUNCATE on an
3626 interval, containing 0.
3627 ** ASH of a negative bignum by a negative bignum count now returns
3629 ** intersection of CONS types now canonicalizes properly, fixing
3630 inconsistencies in SUBTYPEP.
3632 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3633 * incompatible change: The --disable-debugger command line
3634 option now clobbers the debugger at a more fundamental
3635 level, by redefining #'INVOKE-DEBUGGER instead of by
3636 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3637 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3638 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3639 enter the debugger REPL and then suffer recursive errors
3640 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3641 while under the new system, BREAK in --disable-debugger mode
3642 terminates the system just as an unhandled error would.
3643 * fixed compiler performance when processing loops with a step >1;
3644 * bug fix: DOCUMENTATION now retrieves generic function
3645 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3646 support has been systematized, and now supports the methods
3647 specified by ANSI, along with a default method and a method for
3648 slot documentation. (reported by Nathan Froyd)
3649 * bug fix: effective methods associated with a generic function are
3650 no longer cached over a change of that generic function's method
3651 combination. (reported by Andreas Fuchs)
3652 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3653 names a non-existent directory. (thanks to Andreas Fuchs)
3654 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3655 the PPC platform, lead to stack corruption; this has been fixed.
3656 (reported by Rainer Joswig)
3657 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3658 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3659 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3660 arithmetic in general, is now much more reliable on the PPC
3662 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3663 platform now returns the right answer.
3664 * optimization: restored some effective method precomputation in
3665 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3666 precomputation is now tunable.
3667 * optimization: compiler-internal data structure use has been
3668 reviewed, and changes have been made that should improve the
3669 performance of the compiler by about 20%.
3670 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3671 simple-base-strings and simple-bit-vectors is improved.
3672 * optimization: the optimization of 32-bit logical and arithmetic
3673 functions introduced in version 0.8.3 on the x86 has been
3674 implemented on the mips, ppc and sparc platforms; an
3675 implementation of the same facility, but for 64-bit arithmetic,
3676 has been added for the alpha.
3677 * microoptimization: the compiler is better able to make use of the
3678 x86 LEA instruction for multiplication by constants.
3679 * bug fix: in some situations compiler did not report usage of
3680 generic arithmetic in (SPEED 3) policy.
3681 * bug 145b fix: compiler used wrong type specifier while converting
3682 MEMBER-types to numeric.
3683 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3685 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3686 index argument now works properly on the Alpha platform.
3687 * bug fix: floating point exception treatment on the Alpha platform
3689 * bug fix: FILE-POSITION works much better on string input and
3690 output streams. (thanks to Nikodemus Siivola)
3691 * bug fix: many threading/garbage collection symptoms sorted.
3692 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3693 might be pseudo-atomic.
3694 * internal change: Stopping for GC is now done with signals not
3695 ptrace. GC is now done in whichever thread wanted it, instead of
3697 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3699 * bug fix: result form in DO is not contained in the implicit
3701 * incompatible change: ICR structure is changed; the value part of
3702 CONTINUATION is now called LVAR; corresponding functions are
3703 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3704 * added type deriver for ISQRT (thanks to Robert E. Brown).
3705 * bug fix: better support for loading from the command line when an
3706 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3708 * fixed some bugs revealed by Paul Dietz' test suite:
3709 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3710 ** ROUND and FROUND now give the right answer when given very
3711 small float arguments.
3712 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3714 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3715 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3716 ** LCM should return a non-negative integer.
3717 ** PARSE-INTEGER returned the index of a terminator instead of the
3718 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3719 ** PARSE-INTEGER returned an incorrect index being applied to a
3721 ** LCM with two arguments of 0 returns 0 rather than signalling
3723 ** unsigned addition of a 32-bit constant with the high bit set no
3724 longer causes an internal compiler error on the x86.
3725 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3726 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3727 with negative last argument.
3728 ** byte specifiers with zero size and position no longer cause
3729 an error during type derivation.
3730 ** bignum multiplication on the Alpha platform now returns the
3732 * porting: The system now builds on SuSE AMD64, although it still
3733 generates a 32-bit binary.
3734 * .fasl file incompatibility: The fasl file version number has
3735 been incremented (because of the changes to internal compiler
3736 data structures referred to above).
3738 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3739 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3740 more accurately, on the Darwin kernel running on PowerPC hardware.
3741 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3742 * Compiler code deletion notes now signal a condition of type
3743 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3744 an associated MUFFLE-WARNING restart.
3745 * The compiler now performs limited argument count validation of
3746 constant format strings in FORMAT, and where appropriate in ERROR,
3747 CERROR and WARN. (thanks to Gerd Moellmann)
3748 * New ASDF-INSTALL contrib can be used for automatic download and
3749 installation of third-party Lisp code from CCLAN or other sites
3751 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3752 which forces another thread to execute a function supplied by the
3754 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3755 now accept and act upon their :ELEMENT-TYPE keyword argument.
3756 (reported by Martin Atzmueller, Edi Weitz)
3757 * bug fix: FILE-POSITION now accepts position designators up to
3758 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3759 is the greater. (thanks to Patrik Nordebo)
3760 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3761 Kalle Olavi Niemitalo)
3762 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3763 printable. (reported by Eric Marsden)
3764 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3765 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3766 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3767 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3768 (thanks to Stig Sandoe)
3769 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3770 UNREAD-CHAR now correctly includes the unread character in the
3771 target sequence. (thanks to Gerd Moellmann)
3772 * bug fix in threaded builds: the system can now be suspended and
3773 resumed by shell job control with minimal disruption.
3774 * bug fixes in times and timezones >2038AD
3775 * better handling of "where is GNU make?" problem in build scripts
3776 (thanks to Nikodemus Siivola)
3777 * new optimization: inside a named function any reference to a
3778 function with the same name is considered to be a self-reference;
3779 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3780 optimization quality.
3781 * new optimization on x86: logical functions and + now have
3782 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3783 used when the result is truncated to 32 bits.
3784 * VALUES declaration is partially enabled.
3785 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3786 * fixed some bugs revealed by Paul Dietz' test suite:
3787 ** The system now obeys the constraint imposed by
3788 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3789 types form a lattice under type intersection.
3790 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3791 ** ASSOC now ignores NIL elements in an alist.
3792 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3793 and (1+ MOST-POSITIVE-FIXNUM) answers.
3794 ** The addition of a method with invalid qualifiers to a generic
3795 function does not cause an error to be signalled immediately;
3796 a warning is signalled, and the error is generated only on
3797 calling the generic function.
3798 * changed .fasl file version number, in part to add type codes for
3799 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3800 obscure ANSI requirements
3802 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3803 * fixed bug 148: failure to inline-expand a local function left
3804 garbage, confusing the compiler.
3805 * fixed bugs 3cd: structure slot readers perform type check if the
3806 slot can have an invalid value (i.e. it is either not initialized
3807 or can be written with a less specific slot writer).
3808 * bug fix: the compiler now traps array references to elements off
3809 the end of an array; previously, the bounds checking in some
3810 circumstances could go off-by-one.
3811 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3813 * type declarations for array element types now obey the description
3814 on the CLHS page "Declaration TYPE", as per discussions on
3815 sbcl-help around 2003-05-08. This means that a declaration
3816 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3817 declaration, all references to BAR will be asserted or assumed
3818 (with THE, so dependent on compiler policy) to involve objects of
3819 type FOO. Note that no such declaration is implied in
3820 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3821 * declared types of functions from the "Conditions"
3822 chapter. (reported by Paul Dietz)
3823 * bug fix: CERROR accepts a function as its first argument.
3824 * bug fix: NTH an NTHCDR accept a bignum as index
3825 arguments. (reported by Adam Warner)
3826 * optimization: character compare routines now optimize comparing
3827 against a constant character. (reported by Gilbert Baumann)
3828 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3829 argument now works properly on the MIPS platform.
3830 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3831 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3832 declared to have a functional type, does not cause an error
3834 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3835 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3836 * fixed bug: if last continuation of a deleted block has a
3837 destination, this destination should be deleted too. (reported by
3839 * fixed a bug in the bootstrap process: the host compiler's values
3840 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3841 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3842 test case from Patrik Nordebo)
3843 * improved the ability of the disassembler on the PPC platform to
3844 provide helpful disassembly notes.
3845 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3846 the class in more cases than previously.
3847 * bug fix: FILE-POSITION now understands :START and :END for
3848 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3849 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3850 8) data. (thanks to David Lichteblau)
3851 * bug fix: it is possible to add a method to a generic function
3852 without lambda list.
3853 * bug fix: reader failed to signal END-OF-FILE inside an
3854 object representation. (reported by Nikodemus Siivola)
3855 * fixed some bugs revealed by Paul Dietz' test suite:
3856 ** LAST and [N]BUTLAST should accept a bignum.
3857 ** condition slot accessors are methods.
3858 ** (VECTOR NIL) is a subtype of STRING.
3860 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3861 * minor incompatible change: some nonsensical specialized lambda
3862 lists (used in DEFMETHOD) which were previously ignored now signal
3864 * minor incompatible change: the system is now aware of the types of
3865 variables in the COMMON-LISP package, and will signal errors for
3866 most violations of these type constraints (where previously they
3867 were silently accepted).
3868 * minor incompatible change: COMPILE-FILE now uses the freedom
3869 afforded (ANSI 3.2.2.3) to use derived function types for
3870 functions defined in the same file. This also permits the system
3871 to warn on static type mismatches and function
3872 redefinition. (Currently it does not work with high DEBUG level.)
3873 * minor incompatible change: VALUES declaration is disabled.
3874 * When issuing notes, the compiler now signals a condition of type
3875 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3876 restart for use in user handlers. It is expected that the
3877 COMPILER-NOTE condition will eventually become a condition
3878 supertype to a hierarchy of note types, which will then be
3879 handleable in a similar fashion. However, at the moment, no such
3880 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3881 but it's an implementation detail, not a classification for the
3883 * Changes in type checking closed the following bugs:
3884 ** type checking of unused values (192b, 194d, 203);
3885 ** template selection based on unsafe type assertions (192c, 236);
3886 ** type checking in branches (194bc).
3887 * A short form of VALUES type specifier has ANSI meaning (it has
3888 increased the number of situations when SBCL cannot perform type
3890 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3891 keywords or constants is permissible.
3892 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3893 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3894 classes. (thanks to Antonio Martinez)
3895 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3896 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3897 argument to a pretty-print stream. Instead, it leaves any such
3898 operations to DESCRIBE-OBJECT methods.
3899 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3901 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3902 lambda lists. (thanks to David Lichteblau)
3903 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3904 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3905 (thanks to Gerd Moellmann)
3906 * fixed bug 246: increased compilation speed of long
3907 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3909 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3911 * DEFCONSTANT now throws a condition of type
3912 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3913 constant to a non-EQL value; CONTINUE and ABORT restarts
3914 respectively change and preserve the value.
3915 * fixed bug 63: The code walker, part of the implementation of CLOS,
3916 is now better at handling symbol macros.
3917 * bug fix: There is no longer an internal implementation type named
3918 CL:LENGTH. (reported by Raymond Toy)
3919 * bug fix: In macro-like defining macros/special operators the
3920 implicit block does not enclose the lambda list.
3921 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3922 enclosed in parentheses) are not suitable as type specifiers, and
3923 their use properly signals an error now.
3924 * bug fix: An argument count mismatch for a type specifier in code
3925 being compiled no longer causes an unhandled error at compile
3926 time, but signals a compile-time warning.
3927 * fixed simple vector readable printing
3928 * bug fix: DESCRIBE takes more care over whether the class
3929 precedence list slot of a class is bound before accessing it.
3930 (reported by Markus Krummenacker)
3931 * bug fix: FORMATTER can successfully compile pretty-printer format
3932 strings which use variants of the ~* directive inside.
3933 * bug fix: SEARCH now applies its TEST predicate to the elements of
3934 the arguments in the correct order. (thanks to Wolfhard Buss)
3935 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3936 in type inference. (thanks to Robert E. Brown)
3937 * bug fix: Reading in symbols with an explicit package name of ""
3938 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3939 * fixed some bugs revealed by Paul Dietz' test suite:
3940 ** NIL is now allowed as a structure slot name.
3941 ** Arbitrary numbers, not just REALs, are allowed in certain
3942 circumstances in LOOP for-as-arithmetic clauses.
3943 ** Multiple class redefinitions before slot access no longer
3944 causes a type error.
3945 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3946 association between the name and a class.
3947 ** Generic functions with non-standard method-combination and over
3948 five methods all of which return constants no longer return NIL
3949 after the first few invocations. (thanks to Gerd Moellmann)
3950 ** CALL-NEXT-METHOD with no arguments now passes the original
3951 values of the arguments, even in the presence of assignment.
3952 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3954 ** DISASSEMBLE works with closures and funcallable instances.
3955 ** ADD-METHOD now returns the generic function, not the new method.
3956 ** FIND-METHOD signals an error if the lengths of the specializers
3957 is incompatible with the generic function, even if the ERRORP
3959 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3960 which its argument is a member.
3961 ** DEFCLASS only redefines the class named by its class-name
3962 argument if that name is the proper name of the class;
3963 otherwise, it creates a new class.
3964 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3965 of the UNBOUND-SLOT condition to the name of the slot.
3966 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3967 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3968 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3969 SLOT-MAKUNBOUND in the specified fashion.
3971 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3972 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3973 cross-compilation host. As a consequence, we can now bootstrap our
3974 way up to SBCL starting with a bare gcc toolchain and human-readable
3975 source code (first the source to CLISP, then the source to SBCL).
3976 * A contributed module containing a partial implementation of the
3977 simple-streams interface has been included. (thanks to Rudi
3979 * A contributed module implementing the RFC1321 Message Digest
3980 Algorithm, known as MD5, has been included.
3981 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3982 no longer has any effect, as the code controlled by this feature
3983 has been deleted. (As far as we know, no-one has ever built using
3984 this feature, and its semantics were confused in any case).
3985 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3986 work on conditions (as required by the ANSI specification),
3987 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3988 expected behaviour on conditions. Users should note, however,
3989 that such behaviour is not required by the ANSI specification,
3990 and so use of this behaviour may render their code unportable.
3991 * fixed some bugs revealed by Paul Dietz' test suite:
3992 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3994 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3995 ** SXHASH on condition objects no longer returns NIL.
3996 ** :ALLOCATION :CLASS slots are better treated; their values are
3997 updated on class redefinition, and initforms inherited from
3998 superclasses are applied.
3999 ** REMOVE-METHOD returns its generic function argument even when
4000 no method was removed.
4001 ** SHARED-INITIALIZE now initializes the values of the requested
4002 slots, including those with :ALLOCATION :CLASS.
4003 ** ALLOCATE-INSTANCE now works on structure classes defined via
4004 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4006 ** SLOT-EXISTS-P now works on conditions, as well as structures
4008 ** MAKE-LOAD-FORM now has the required methods on
4009 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4010 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4011 keyword, and now implements the SLOT-NAMES argument.
4012 ** methods with &OPTIONAL arguments no longer allow too many
4013 arguments to be passed in the call without error.
4014 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4015 option is consistent with the required arguments of the generic
4016 function lambda list.
4017 * bug fix: REQUIRE accepts a string designator. (Thanks to
4019 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4020 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4021 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4022 * bug fix: The compiler now checks for duplicated variables in macro
4024 * bug fix: SETQ on globals returns the correct value.
4025 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4026 not a COMPILER-ERROR (followed by some other strange error on
4027 choosing the CONTINUE restart).
4028 * bug fix: make.sh and friends are now more consistent in the way that
4029 they look for GNU "make".
4031 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4032 * experimental native threads support (on x86 Linux >=2.4 only).
4033 This is not compiled in by default: you need to add :SB-THREAD to
4034 the target features. See the "Beyond ANSI" chapter of the manual
4036 * fix for longstanding nonANSIism: The old distinction between
4037 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4038 The return value from CL:FIND-CLASS is now a CLOS class, and
4039 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4040 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4041 * An interface to the MetaObject Protocol, as described in Kiczales,
4042 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4043 MIT Press, 1991, is available from the SB-MOP package.
4044 * incompatible change: the SB-PCL package should now be considered
4045 a private implementation detail, and no longer a semi-private MOP
4047 * minor incompatible change: due to rearrangement for threads, the
4048 control stack and binding stack are now allocated at arbitrary
4049 addresses instead of being hardcoded per-port. Users affected by
4050 this probably have to be doing advanced things with shared
4051 libraries, and will know who they are.
4052 * minor incompatible change: Previously, all --eval forms used were
4053 processed with READ before any of them were processed with EVAL.
4054 Now each --eval form is processed with both READ and EVAL before
4055 the next --eval form is processed. (Thus package operations like
4056 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4057 work as the user might reasonably expect.)
4058 * minor incompatible change: *STANDARD-INPUT* is now only an
4059 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4061 * minor incompatible change: Y-OR-N-P is now character-oriented,
4062 not line oriented. Also, YES-OR-NO-P now works without errors.
4063 (thanks to Antonio Martinez)
4064 * sb-aclrepl module improvements: an integrated inspector, added
4065 repl features, and a bug fix to :trace command.
4066 * Known functions, which cannot be open coded by the backend, are
4067 considered to be able to check types of their arguments. (fixing
4068 a bug report by Nathan J. Froyd)
4069 * fixed a bug in computing method discriminating functions: It is
4070 now possible to define methods specialized on classes which have
4071 forward-referenced superclasses. (thanks to Gerd Moellmann)
4072 * fixed evaluation order in optional entries (reported by Gilbert
4074 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4075 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4076 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4077 required-by-AMOP NAME argument, as well as CLASS and
4078 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4079 * fixed bug 20: DEFMETHOD can define methods using names that are
4080 not the proper names of classes to designate class specializers.
4081 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4082 Unix file descriptors, instead of blowing up. (thanks to Antonio
4084 * Garbage collection refactoring: user-visible change is that a
4085 call to the GC function during WITHOUT-GCING will not do garbage
4086 collection until the end of the WITHOUT-GCING. If you were doing
4087 this you were probably losing anyway.
4088 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4089 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4090 TYPEP the latter but not the former.
4091 * The compiler issues a full WARNING for calls to undefined functions
4092 with names from the CL package.
4093 * MAP-INTO for a vector destination is open coded. (reported by
4094 Brian Downing on c.l.l)
4095 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4096 documentation string.
4097 * fixed some bugs revealed by Paul Dietz' test suite:
4098 ** COPY-ALIST now signals an error if its argument is a dotted
4100 ** Condition slots are now accessed more correctly in the presence
4101 of multiple initargs for a given slot.
4102 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4103 exclude restarts of the same name associated with a different
4105 ** DEFCLASS of forward-referenced classes with another
4106 forward-referenced class in the superclasses list no longer
4108 ** Condition slots are now initialized once each, not multiple
4109 times. (thanks to Gerd Moellmann)
4110 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4112 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4113 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4114 arguments contain duplicated elements.
4115 ** RESTART-CASE understands local macros.
4116 ** RESTART-CASE associates exactly its own restarts with a condition.
4117 ** ENDP in safe mode checks its argument to be of type LIST.
4118 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4119 in question is unbound.
4120 ** Optimized MAKE-INSTANCE functions no longer cause internal
4121 assertion failures in the presence of duplicate initargs.
4122 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4123 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4124 propagated even in the ctor optimized implementation of
4126 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4128 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4129 * a better implementation of SXHASH on (simple) bit vectors,
4130 measured both in execution speed and in distribution of results
4131 over the positive fixnums, has been installed. Likewise, a better
4132 implementation of EQUAL for simple bit vectors is now available.
4133 * fixed CEILING optimization for a divisor of form 2^k.
4134 * fixed bug 240 (emitting extra style warnings "using the lexical
4135 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4136 by Antonio Martinez)
4137 * fixed SXHASH, giving different results for NIL depending on type
4138 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4139 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4140 variable. (found by Rolf Wester)
4141 * SBCL does not ignore type declarations for special
4142 variables. (reported by rif on c.l.l 2003-03-05)
4143 * some bug fixes in contrib/sb-aclrepl/
4144 * fixed some bugs revealed by Paul Dietz' test suite:
4145 ** a bug in the CONS type specifier, whereby the CAR and CDR
4146 types got intertwined, has been fixed;
4147 ** the type system is now able to reason about the interaction
4148 between INTEGER and RATIO types more completely;
4149 ** APPEND, [N]REVERSE and NRECONC check that those their
4150 arguments, which must be proper lists, are really so;
4151 ** An array specialized to be unable to hold elements has been
4152 implemented, as required -- yes, really -- by ANSI;
4153 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4154 on malformed property lists;
4156 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4157 * incompatible packaging change: in line with Unix convention,
4158 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4159 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4160 * REQUIRE and PROVIDE are now optionally capable of doing something
4161 useful. See the documentation string for REQUIRE.
4162 * infrastructure for a managed SBCL contrib system: contributed
4163 modules in this release include:
4164 ** the ASDF system definition facility;
4165 ** an interface to the BSD Sockets API;
4166 ** an ACL-like convenience interface to the repl;
4167 (thanks to Kevin Rosenberg)
4168 ** an implementation of ROTATE-BYTE, with efficient implementation
4170 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4171 gives a closer approximation to the right answer than previously.
4172 (thanks to Raymond Toy)
4173 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4174 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4175 optional environment arguments, as required by ANSI.
4176 * fixed bugs in other functions taking environment objects, allowing
4177 calls with an explicit NIL environment argument to be compiled
4179 * fixed bug 228: primary return values from
4180 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4181 COMPILE or FUNCTION.
4182 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4183 :TYPE will no longer signal errors on innocuous objects.
4184 * fixed bug 231b: SETQ is better at respecting type declarations in
4185 the lexical environment.
4186 * fixed a bug in DEFCLASS: classes named by symbols with no or
4187 unprintable packages can now be defined.
4188 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4189 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4190 * fixed compiler failure related to checking types of functions.
4191 (reported by Robert E. Brown)
4192 * the compiler is now much more consistent in its error-checking
4193 treatment of bounding index arguments to sequence functions: in
4194 (SAFETY 3) code, errors will be signalled in almost all cases if
4195 invalid sequence bounding indices are passed to functions defined
4196 by ANSI to operate on sequences.
4197 * fixed a bug in the build procedure: documentation of SBCL-specific
4198 packages is now preserved and available in the final Lisp image.
4199 * lifted FDEFINITION lookup out of loops in the implementation of
4200 many list operations. (thanks to Robert E. Brown)
4201 * fixed a bug in the reader: the #n# reader macro now works for
4202 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4203 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4204 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4205 E. Brown and Tony Martinez respectively)
4206 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4207 SLOT-BOUNDP: in particular, it is now able to optimize them much
4208 better, and is now not vulnerable to having packages renamed.
4209 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4210 always called when a slot is not present in an instance. (thanks
4212 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4213 longer signal an error on unreading a character following EOF on
4214 the previous constituent stream. (thanks to Tony Martinez)
4215 * fixed some bugs revealed by Paul Dietz' test suite:
4216 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4217 not just nonnegative fixnums;
4218 ** the logical bit-array operators such as BIT-AND now accept an
4219 explicit NIL for their "opt-arg" argument (to indicate a
4220 freshly-consed result bit-array);
4221 ** ELT now signals an error on an invalid sequence index in safe
4223 ** the type system is now cleverer about negations of numeric
4224 types, and consequently understands the BIGNUM and RATIO types
4226 ** the type system is now cleverer about the interaction between
4227 INTEGER and RATIO types: while bugs still remain, many more
4228 cases are accurately computed;
4229 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4230 if it is in the last clause;
4231 ** CONSTANTLY now correctly returns a side-effect-free function in
4233 ** DECLARE is no longer treated as a special-operator; in
4234 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4235 * incremented fasl file version number due to the change in the
4236 DEFSTRUCT-SLOT-DESCRIPTION structure.
4238 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4239 * minor incompatible change: code processed by the "interpreter" or
4240 EVAL now has a compilation optimization policy of (DEBUG 2)
4241 (changed from (DEBUG 1)) to improve debuggability of interactive
4242 development, and to allow the use of the debug RETURN command in
4244 * an experimental implementation of the RETURN command for the
4245 debugger has been included. (thanks to Frederik Kuivinen)
4246 * fixed bug 62: constraints were not propagated into a loop.
4247 * fixed bug in embedded calls of SORT (reported and investigated by
4249 * fixed some bugs revealed by Paul Dietz' test suite:
4250 ** printing and reading of arrays with some dimensions having
4251 length 0 (thanks to Gerd Moellmann);
4252 ** BOA constructor with &AUX argument without a default value does
4253 not cause a type error;
4254 ** CONSTANTP now returns true for all self-evaluating objects.
4256 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4257 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4258 accessors that are related by inheritance, as specified in the
4259 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4260 Valtteri Vuorikoski)
4261 * The compiler is now able to inline functions that were defined in
4262 a complex lexical environment (e.g. inside a MACROLET).
4263 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4265 * Support for the upcoming FreeBSD-5.0 release has been included.
4266 (thanks to Dag-Erling Smorgrav)
4267 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4268 effect when it is not in a toplevel context.
4269 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4270 stand a better chance of being correct. (thanks to Gerd
4272 * fixed bug in COERCE, which now signals an error on coercing a
4273 rational to a bounded real type which excludes the expected
4275 * The compiler is now able to derive types more accurately from the
4276 COERCE and COMPILE functions.
4277 * fixed bug 223: functional binding is considered to be constant
4278 only for symbols in the CL package.
4279 * fixed bug 231: SETQ did not check the type of a variable being set
4280 (reported by Robert E. Brown)
4281 * A new optimization for MAKE-INSTANCE has been included, fixing
4282 various bugs (including relating to :ALLOCATION :CLASS slots and
4283 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4285 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4286 ** As required by ANSI, LOOP now disallows anonymous collection
4287 clauses such as COLLECT I in conjunction with aggregate boolean
4288 clauses such as THEREIS (= I 1);
4289 ** LOOP now signals an error when any variable is reused in the
4290 same loop (including the potentially useful construct analogous
4291 to WITH A = 1 WITH A = (1+ A);
4292 ** IT is only a special loop symbol within the first clause of a
4293 conditional loop clause;
4294 ** LOOP with a typed iteration variable over a hashtable now
4295 signals a type error iff it should.
4296 * fixed some other bugs revealed by Paul Dietz' test suite:
4297 ** FILE-STREAM now names the class previously known as FD-STREAM;
4298 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4299 argument) no longer signals an error;
4300 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4301 of the slot symbol, rather than using the current package
4302 ((:CONC-NAME "") continues to intern the slot's name in the
4304 * incremented fasl file version number, because of the incompatible
4305 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4306 of the new implementation of DEFINE-COMPILER-MACRO.
4308 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4309 * Support for building SBCL for MIPS platforms running in
4310 little-endian mode has now been checked in, and basic
4311 functionality on said platforms verified.
4312 * minor incompatible change: PCL now records the pathname of a file
4313 in which methods and the like are defined, rather than its
4315 * minor incompatible change: TRUENAME now considers the truename of
4316 a file naming a directory to be the pathname with :DIRECTORY
4317 component indicating that directory.
4318 * minor incompatible change: a NAMED clause in the extended form of
4319 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4320 reason for the previous behaviour is unclear.
4321 * more systematization and improvement of CLOS and MOP conformance
4322 in PCL (thanks to Gerd Moellman and Pierre Mai):
4323 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4325 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4326 primary methods with no specializers;
4327 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4329 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4330 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4331 FORWARD-REFERENCED-CLASSes; error reporting on
4332 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4334 ** SXHASH on CLOS instances now uses a slot internal to the
4335 instance to return different numbers on distinct instances,
4336 while preserving the same return value through invocations of
4338 ** DEFMETHOD signals errors when methods with longer incongruent
4339 lambda lists are added to generic functions;
4340 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4341 CLASS, as specified in AMOP;
4342 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4343 on the order returned by the primary method for classes of
4344 class STANDARD-CLASS;
4345 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4346 * fixed some bugs shown by Paul Dietz' test suite:
4347 ** DOLIST puts its body in TAGBODY;
4348 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4350 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4351 value producing form;
4352 ** if more variables are given to PROGV than values, extra
4353 variables are bound and made to have no value;
4354 ** NSUBSTITUTE on list arguments gets the right answer with
4356 ** ELT signals an error of type TYPE-ERROR when the index argument
4357 is not a valid sequence index;
4358 ** LOOP signals (at macroexpansion time) an error of type
4359 PROGRAM-ERROR when duplicate variable names are found;
4360 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4361 ** FUNCALL of special-operators now cause an error of type
4363 ** PSETQ now works as required in the presence of side-effecting
4364 symbol-macro places;
4365 ** NCONC accepts any object as its last argument;
4366 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4368 ** loop-for-as-package does not require a package to be explicitely
4370 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4372 * fixed bug 166: compiler preserves "there is a way to go"
4373 invariant when deleting code.
4374 * fixed bug 172: macro lambda lists with required arguments after
4375 &REST arguments now cause an error to be signalled. (thanks to
4377 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4378 bug. (thanks to Matthew Danish)
4379 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4381 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4382 arguments are lexically rebound. (thanks to Gerd Moellmann and
4384 * fixed bug 194: error messages are now more informative when there
4385 is no primary method applicable in a call to a generic
4386 function. (thanks to Gerd Moellmann)
4387 * fixed bug in command line argument checking (thanks to Julian
4389 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4390 (thanks to Matthew Danish)
4391 * incremented fasl file version number, because of the
4392 SXHASH-related changes in the layout of CLOS data structures
4394 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4395 * minor incompatible change: The runtime (the Unix executable named
4396 "sbcl") is now much pickier about the .core files it will load.
4397 Essentially it now requires .core files to descend from the same
4398 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4399 as the runtime does. (The intent is to prevent the crashes which
4400 can occur, and which can even be reported as mysterious failures,
4401 when people patch the sources or change the build parameters
4402 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4403 sbcl and .core files.)
4404 * fixed bug: VALUES-LIST is no longer optimized away.
4405 * fixed bug 142: The FFI conversion of C string values to Lisp
4406 string values no longer conses excessively. (thanks to Nathan
4407 Froyd porting Raymond Toy's fix to CMU CL)
4408 * began to systematize and improve MOP conformance in PCL (thanks to
4409 Nathan Froyd, Gerd Moellman and Pierre Mai):
4410 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4412 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4413 ** FINALIZE-INHERITANCE is now called on class finalization;
4414 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4415 argument precedence order.
4416 * fixed bug 202: The compiler no longer fails on functions whose
4417 derived types contradict their declared type.
4418 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4419 so it can be non-toplevel.
4420 * The fasl file version number has changed (because of the new
4421 implementation of DEFMACRO).
4422 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4423 safe code, that any length requirement by their type-specifier
4424 argument is valid. The exceptions to this are described in bug
4426 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4427 functions now check the types of their inputs as required by ANSI.
4428 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4429 introduced symbol is DECLAREd to be SPECIAL.
4430 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4431 * fixed bug: :COUNT argument to sequence functions may be negative
4432 * fixed bug: body of DO-SYMBOLS may contain declarations
4433 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4434 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4435 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4436 symbol macro only once
4437 * fixed printing of call frame when argument list is unavailable
4438 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4439 * compiler no longer signals WARNING on unknown keyword
4442 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4443 * A beta-quality port to the mips architecture running Linux,
4444 based on the old CMUCL backend, has been made. It has been tested
4445 on a big-endian kernel, and works sufficiently well to be able to
4446 rebuild itself; it has not been tested in little-endian mode.
4447 * fixed an inconsistency between gencgc.c and purify.c which made
4448 dumping/loading .core files unreliable
4449 * fixed bug 120a: The compiler now deals correctly with IFs where
4450 the consequent is the same as the alternative, instead of
4451 misderiving the return type. (thanks to Alexey Dejneka)
4452 * fixed bug 113: Logical pathnames are now dumpable (the logical
4453 host is resolved at load-time, throwing an error if it is not
4455 * fixed bug 174: FORMAT's error message is slightly clearer when a
4456 non-printing character is used in a format directive.
4457 * fixed several bugs in compiler checking of type declarations, i.e.
4458 violations of the Python "declarations are assertions" principle
4459 (thanks to Alexey Dejneka)
4460 * fixed several bugs in PCL's error checking (thanks to Gerd
4462 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4464 * fixed bug in compilation of functions as first class values
4465 (thanks to Antonio Martinez-Shotton)
4466 * The compiler's handling TYPE-ERRORs which it can prove will
4467 inevitably happen at runtime has been cleaned up and corrected
4468 in several ways. (thanks to Alexey Dejneka)
4469 * improved argument type checking for various basic arithmetic
4470 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4471 lavished on them in the past that they can be compiled in many
4472 ways in different special cases
4473 * fixed bug 181: compiler checks validity of user supplied type
4475 * cleaned up code flushing in optimization: Function calls which
4476 should signal errors for safety purposes (e.g. which ANSI says
4477 should signal errors when their arguments are of incorrect type)
4478 are no longer optimized away.
4479 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4480 * incremented fasl file version number, because changes in the
4481 implementation of sequence functions like COERCE caused
4482 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4483 in old inline expansions) to become undefined. (Actually these
4484 changes were later undone, so we might very well be binary
4485 compatible with 0.7.7 after all, but leaving the version number
4486 incremented seemed like the simplest and most conservative
4489 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4490 * An alpha-quality port to the parisc architecture running Linux,
4491 based on the old CMUCL backend, has been made. This, even more so
4492 than the other backends, should be considered still a work in
4493 progress; known problems include that the Linux kernel in 64-bit
4494 mode does not propagate the correct sigcontext structure to
4495 userspace, and consequently SBCL on a parisc64 kernel will not
4497 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4498 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4499 suppressed.) Also now that the compiler is looking at declarations
4500 in the environment, it checks optimization declarations as well,
4501 and suppresses inlining when (> DEBUG SPEED).
4502 * More fixes have been made to treatment of floating point exception
4503 treatment and other Unix signals. In particular, floating point
4504 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4505 * The detection and handling of control stack exhaustion (infinite
4506 or very deeply nested recursion) has changed. Stack exhaustion
4507 detection is now done by write-protecting pages at the OS level
4508 and applies at all optimization settings; when found, a
4509 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4510 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4511 be caught using IGNORE-ERRORS.
4512 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4513 correctly when transforming recursive LABELS functions to LETs.
4514 (thanks to Alexey Dejneka)
4515 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4516 that are names of constants or global variables.
4517 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4518 alien routines with docstrings.
4519 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4520 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4522 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4523 (thanks to Eric Marsden)
4524 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4525 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4526 * Bug fix: The SPARC backend can now compile functions involving
4527 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4528 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4529 to a functions expecting a PATHNAME-DESIGNATOR.
4530 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4531 lambda lists. (thanks to Alexey Dejneka)
4532 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4533 functions so that EXPORTing the name of the class doesn't cause
4534 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4535 to Antonio Martinez for reporting this)
4536 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4537 constant-folded without failing an assertion. (thanks to Einar
4538 Floystad Dorum for reporting this)
4539 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4540 types are now dealt with more correctly by the compiler.
4541 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4542 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4543 behaviour analogous to RENAME-FILE. This puts its behaviour more
4544 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4546 * The fasl file version number has changed again. (because of the
4547 bug fix involving the names of PCL MAKE-INSTANCE functions)
4549 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4550 * bug fix: Floating point exceptions are treated much more
4551 consistently on the x86/Linux and PPC/Linux platforms.
4552 * Array initialization with :INITIAL-ELEMENT is now much faster for
4553 cases when the compiler cannot open code the array creation, but
4554 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4555 array accesses have also seen a speed increase.
4556 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4557 specified. (This was at the root of some bad interactions between
4558 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4560 * bug fix: Internal error arguments for undefined functions are now
4561 computed correctly on the PPC/Linux platform.
4562 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4563 Raymond Toy's patch for CMU CL)
4564 * Support for the Solaris 9 operating environment has been included
4565 (thanks to Daniel Merritt)
4566 * A very ugly but hopefully complete draft of the missing FFI chapter
4567 of the manual has been created by reformatting the corresponding
4568 CMU CL manual chapter into (currently very ugly and incoherent)
4569 DocBook and bringing it up to date for SBCL behavior. Thus, the
4570 manual is now essentially complete, at least by my extreme
4571 once-and-only-once standards, whereby it's acceptable to refer to
4572 the doc strings of SB-EXT functions as the primary documentation.
4573 * The fasl file version number has changed again, due to cleanup of
4574 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4575 is no longer a static symbol.)
4577 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4578 * SBCL now builds with OpenMCL (version 0.12) as the
4579 cross-compilation host; also, more progress has been made toward
4580 bootstrapping under CLISP.
4581 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4583 * bug 158 fixed: The compiler can now deal with integer loop
4584 increments different from 1; fixing this turned out also to fix
4586 * bug 169 fixed: no more bogus warnings about using lexical bindings
4587 despite the presence of perfectly good SPECIAL declarations (thanks
4588 to David Lichteblau)
4589 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4590 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4591 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4593 * bug 180 fixed: Method combination specifications no longer ignore
4594 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4595 * bug fix: Structure type predicate functions now check their argument
4596 count as they should.
4597 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4598 correctly. (thanks to Pierre Mai)
4599 * minor incompatible change: The --noprogrammer option is deprecated
4600 in favor of the new --disable-debugger option, which is very similar.
4601 (The major difference is that it takes effect at a slightly different
4602 time at startup, causing handling of errors in --sysinit and
4603 --userinit files will be affected differently.) The
4604 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4605 been added to allow this functionality to be controlled from ordinary
4606 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4607 maintainers, who might want to run non-interactive scripts to
4608 build SBCL cores which will later be used interactively.)
4609 * minor incompatible change: The LOAD function no longer, when given
4610 a wild pathname to load, loads all files matching that pathname.
4611 Instead, an error of type FILE-ERROR is signalled.
4613 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4614 * bug 147 fixed: The compiler preserves its block link/count
4615 invariants more correctly now so that it doesn't crash. (thanks
4617 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4619 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4620 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4621 no-value-for-this-character as NIL (as specified by ANSI).
4622 * HOST-NAMESTRING on physical pathnames now returns a string that is
4623 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4624 (thanks to Christophe Rhodes)
4625 * The Alpha port handles icache flushing more correctly. (thanks to
4627 * More progress has been made toward bootstrapping under CLISP. (thanks
4628 to Christophe Rhodes)
4629 * The fasl file format has changed again, because dynamic loading
4630 on OpenBSD (which has non-ELF object files) motivated some cleanups
4631 in the way that foreign symbols are transformed and passed around.
4632 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4633 is no longer treated as whitespace by the reader, but instead as
4634 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4635 |A
\7fB|, instead of A as it used to.
4637 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4638 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4639 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4640 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4641 this as of 0.7.1.45, but was left out of the previous news section
4642 (thanks to Dan Barlow)
4643 * SBCL now runs on the Solaris operating system on SPARC architectures
4644 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4645 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4646 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4647 * SPARC backend cleanups, allowing builds of cores optimized for V8
4648 and V9 SPARCS, and also emission of code targeted to a particular
4649 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4651 * SBCL is closer to bootstrapping under CLISP, thanks to various
4652 fixes by Christophe Rhodes.
4653 * The fasl file format has changed again, to allow the compiler's
4654 INFO database to support symbol macros.
4655 * The user manual (in doc/) is formatted into HTML more nicely.
4656 (thanks to coreythomas)
4657 * The system is smarter about SUBTYPEP relationships, especially
4658 those involving NOT types (including types such as ATOM which are
4659 represented internally using NOT types). Thus SUBTYPEP is less
4660 likely to return (VALUES NIL NIL) in general, and in particular
4661 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4663 * The fasl file format has changed again, because the internal
4664 representation of types now includes a new slot to support the new
4665 SUBTYPEP-of-NOT-types logic.
4666 * (not a change in the main branch of SBCL, but a related prototype
4667 which can hopefully be merged into the main branch of SBCL in the
4668 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4669 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4670 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4671 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4672 dispatch macro character combinations. (thanks to Alexey Dejneka)
4673 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4674 that superficially look like logical namestrings correctly.
4675 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4677 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4678 default supplied-p) for &optional and &key arguments. (thanks to
4681 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4682 * incompatible change: The compiler is now less aggressive about
4683 tail call optimization, doing it only when (> SPACE DEBUG) or
4684 (> SPEED DEBUG). (This is an incompatible change because there are
4685 programs which relied on the old CMU-CL-style behavior to optimize
4686 away their unbounded recursion which will now die of stack overflow.)
4687 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4688 for non-GENCGC systems has been increased to 20M (since that
4689 seems much closer to the likely performance optimum for modern
4690 systems than the old 4M value was)
4691 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4692 and *DEBUG-PRINT-LEVEL*
4693 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4694 of CMU CL's support for SPARC, and various endianness and other
4695 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4696 * new syntactic sugar for the Unix command line: --load foo.bar is now
4697 an alternate notation for --eval '(load "foo.bar")'.
4699 ** The system now detects stack overflow and handles it gracefully,
4700 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4701 optimization settings. (This is a good thing in general, and
4702 its introduction in this version should be particularly timely
4703 for anyone whose code fails because of suppression of tail
4705 ** The system now hunts for the C variable "environ" in a more
4706 devious way, to avoid segfaults when the C library version differs
4707 between compile time and run time. (thanks to Christophe Rhodes)
4708 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4709 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4710 ** The compiler no longer issues bogus style warnings for undefined
4711 classes in the same source file as the DEFCLASSes which defined
4712 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4714 ** fixes in CONDITION class precedence list for undefined function
4715 errors (thanks to Alexei Dejneka)
4716 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4717 correctly. (thanks to Dan Barlow)
4718 ** portability fixes aiming at bootstrapping under CLISP (thanks
4719 to Dave McDonald and Christophe Rhodes)
4720 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4721 ** fixes in type translation and and type inference (thanks to
4723 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4724 ** various fixes in the new ports (thanks to Dan Barlow)
4725 * several changes related to debugging:
4726 ** suppression of tail recursion, as noted above
4727 ** stack overflow detection, as noted above
4728 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4729 is now the default. (For some time encapsulation has been more
4730 reliable than the breakpoint-based :ENCAPSULATE NIL
4731 implementation, at least on X86 systems; and I just noticed that
4732 encapsulation also seems closer to the spirit of the ANSI
4735 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4737 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4738 up properly again. (There was a packaging bug in 0.7.0 which
4739 left their definitions in SB-SYS::LOAD-FOREIGN and
4740 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4741 vital for most things which interface to C-level interfaces,
4742 like extensions working with sockets or databases or
4743 Perl-compatible regexes or whatever, and the need to fix
4744 this bug is the main reason that 0.7.1 was released so
4746 ** DEFGENERIC is now choosier about the methods it redefines, so that
4747 reLOADing a previously-LOADed file containing DEFGENERICs does
4748 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4749 cycle now works as it should. (thanks to Alexey Dejneka)
4750 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4751 fixed by Christophe Rhodes. (He actually submitted this patch
4752 months ago, and I delayed until after 0.7.0.)
4753 ** Bug 111 (internal compiler confusion about runtime checks on
4754 FUNCTION types) was fixed by Alexey Dejneka.
4755 * Some internal cleanups (getting rid of variables which aren't
4756 needed now that the byte interpreter is gone) caused the fasl
4757 file format number to change again.
4759 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4760 * major incompatible change: The default fasl file extension, i.e. the
4761 default extension for files produced by COMPILE-FILE, has changed
4762 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4764 ** There are many changes in the implementation of the compiler.
4765 SBCL is now essentially a compiler-only implementation of ANSI
4766 Common Lisp. EVAL still "interprets" a few special cases, but
4767 almost all the interesting cases are handled by creating
4768 a LAMBDA expression, calling COMPILE on it, then calling
4769 FUNCALL on the result.
4770 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4771 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4772 Since the code is newer, there might still be some new bugs
4773 (though not as many as before Martin Atzmueller's fixes:-). But
4774 the new code is substantially simpler and clearer, and hopefully
4775 any remaining bugs will be simpler, less fundamental, and more
4776 fixable then the bugs in the old code.
4777 ** The revised compiler is still a little unsteady on its feet.
4779 *** The debugging information it produces (particularly the names
4780 of FUNCTION objects) is sometimes much less useful than what
4781 the old compiler produced.
4782 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4783 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4784 within a MACROLET) has been temporarily weakened.
4785 ** There are new compiler optimizations for various functions:
4786 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4787 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4788 *** the math functions TRUNCATE, FLOOR, and CEILING
4789 *** the function-of-all-trades COERCE
4790 Mostly these should be transparent, but there's one
4791 potentially-annoying problem (bug 117): when the compiler
4792 inline-expands a function and does type analysis on the result,
4793 it can create control paths which have type mismatches, and
4794 when it can't prove that those control paths aren't taken,
4795 it will issue WARNINGs about the type mismatches. This is
4796 a particular problem in practice for the new sequence functions.
4797 It's not clear how this should be fixed, and for now, a
4798 workaround is given in the entry for 117 in the BUGS file.
4799 ** (Because of the interaction between the two previous items --
4800 occasional inlining problems and new inline expansions -- some
4801 of the new sequence function optimizations won't really kick in
4802 completely until debugging information, and then inlining, are
4803 straightened out in some future version.)
4804 * minor incompatible changes:
4805 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4806 DIRECTORY no longer implicitly promotes NIL slots of its
4807 pathname argument to :WILD. In particular, when you ask for the
4808 contents of a directory (which you used to be able to do without
4809 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4810 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4811 ** changes in behavior that ANSI explicitly defines to be
4812 implementation dependent:
4813 *** The new compiler-only implementation still conforms with ANSI,
4814 but acts a little different than before. Besides the obvious
4815 changes in performance tradeoffs (that the cost per form passed
4816 to EVAL has gone up, and the cost per form executed by EVAL
4817 has gone down), the behavior of the system changes a little
4818 because there are no longer any interpreted function objects.
4819 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4820 e.g. doing COMPILE on the output of interactive DEFUN is
4822 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4824 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4825 has changed from (:CL) to NIL.
4826 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4827 e.g. #\Newline and #\Tab, don't have names specified in the
4828 ANSI Common Lisp standard, is now based on their ASCII symbolic
4829 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4830 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4831 are no longer used for output.
4832 ** changes in internal implementation constants:
4833 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4834 4 million. (If your application spends a lot of time GCing and
4835 you have a lot of RAM, you might want to experiment with
4836 increasing it even more.)
4837 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4838 However, almost all old code should still continue to work without
4839 immediate update, as SB-C-CALL is now a (deprecated) nickname
4841 ** Old operator names in the style DEF-FOO are now deprecated in
4842 favor of new corresponding names DEFINE-FOO, for consistency with
4843 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4844 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4845 internal symbols, but a few supported extensions like
4846 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4847 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4848 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4849 etc. as you get deeper into recursive calls to the debugger
4850 command loop, instead of the old "5]", "5]]", "5]]]"
4851 sequence. (I was motivated to do this when squabbles between
4852 ILISP and SBCL left me very deeply nested in the debugger. In the
4853 short term, this change will probably provoke more ILISP/SBCL
4854 squabbles, but hopefully it will be an improvement in the long run.)
4855 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4856 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4857 function, since declaiming return types involving aliens is
4858 (1) annoyingly messy to do by hand and (2) vital to efficient
4859 compilation of code which calls such functions.
4860 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4861 longer reexported by the SB-EXT package. They're solely useful
4862 for alien code, so it seems more logical that you should get
4863 them from the SB-ALIEN package, not in SB-EXT.
4864 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4865 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4866 features. Instead, the code that they used to control is always
4867 built into the system.
4868 * many other bug fixes
4869 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4870 advantage of the new EVAL-WHEN stuff and to clean them up in
4871 general, and they are now more ANSI-compliant in a number of
4872 ways. Martin Atzmueller is responsible for a lot of this.
4873 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4875 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4876 *** correct ERROR type for various file operations
4877 *** some fixes for Lisp streams
4878 *** DEFMETHOD syntax checking
4879 *** changing old weird representation of debug information as
4880 strings (which, among their other deficiencies, don't transform
4881 correctly when you rename packages, and don't change their
4882 print representation when you change things like *PACKAGE*
4883 and *PRINT-LENGTH*) to symbols and lists of symbols
4884 He also made several improvements and fixed several bugs in DESCRIBE.
4885 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4887 *** misbehavior of WRITE-STRING/WRITE-LINE
4888 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4889 and several other LOOP problems as well
4890 *** DIRECTORY when similar filenames are present
4891 *** DEFGENERIC with :METHOD options
4892 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4893 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4894 *** argument ordering in FIND with :TEST option
4895 *** mishandled package designator argument in APROPOS-LIST
4896 *** various problems in the backquote readmacro
4897 *** a bug in APROPOS
4898 *** probably some others that I'm not describing very well here,
4899 since the CVS log documents them by reference to sbcl-devel
4900 messages, and the SourceForge archives aren't working well.:-(
4901 ** Dan Barlow improved the Alpha port (and is making progress on the
4902 PPC port, for those of you who think different).
4903 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4904 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4905 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4906 continues to work on the SPARC port (for those of you in a position
4907 to look down upon our little PC-compatible boxes from a great height).
4908 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4909 and uses that copy, rather than the current dynamic value, when
4910 it's trying to decide whether to truncate output. Thus e.g.
4911 (let ((*print-lines* 50))
4912 (pprint-logical-block (stream nil)
4914 (let ((*print-lines* 8))
4915 (print (aref possiblybigthings i) stream)))))
4916 should now truncate the logical block only at 50 lines, instead of
4917 often truncating it at 8 lines, as it did before.
4918 * The doc/cmucl/ directory, containing old CMU CL documentation
4919 from the time of the fork, is no longer part of the base system.
4920 SourceForge has shut down its anonymous FTP service, and with it
4921 my original plan for distributing the old CMU CL documentation
4922 there. For now, if you need these files you can download an old
4923 SBCL source release and extract them from it.
4924 * The fasl file version number changed again, for dozens of reasons,
4925 some of which are apparent above.
4927 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4928 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4929 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4930 patch, so that DISASSEMBLE output is much nicer.
4931 * The code in the SB-PROFILE package now seems reasonably stable.
4932 I still haven't decided what the final interface should look like
4933 (I'd like PROFILE to interact cleanly with TRACE, since both
4934 facilities use function encapsulation) but if you have a need
4935 for profiling now, you can probably use it successfully with
4936 the current CMU-CL-style interface.
4937 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4938 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4939 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4940 link now returns the dangling link itself, and for similar
4941 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4942 link itself. (In these cases the old code signalled an error and
4943 looped endlessly, respectively.) Thus, DIRECTORY now works even
4944 in the presence of dangling and cyclic symbolic links.
4945 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4946 is now a supported extension again, since the consensus on
4947 sbcl-devel was that it can be useful for ordinary development
4948 work, not just for debugging SBCL itself.
4949 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4950 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4951 that currently-defined functions might be redefined later with
4952 different return types.
4953 * Hash tables can be printed readably, as inspired by CMU CL code
4954 of Eric Marsden and SBCL code of Martin Atzmueller.
4955 * better error handling in CLOS method combination, thanks to
4956 Martin Atzmueller porting Pierre Mai's CMU CL patches
4957 * more overflow fixes for >16Mbyte I/O buffers
4958 * A bug in READ has been fixed, so that now a single Ctrl-D
4959 character suffices to cause end-of-file on character streams.
4960 In particular, now you only need one Ctrl-D at the command
4961 line (not two) to exit SBCL.
4962 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4964 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4965 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4966 does the right thing.
4967 * The implementation of some type tests, especially for CONDITION
4968 types, is now tidier and maybe faster, due to CMU CL code
4969 originally by Douglas Crosher, ported by Martin Atzmueller.
4970 * Some math functions have been fixed, and there are new
4971 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4972 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4973 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4974 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4975 likely to be built into sbcl-0.7.0.)
4976 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4977 CL, ported to SBCL by Martin Atzmueller)
4978 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4979 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4980 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4981 * There's a new slam.sh hack to shorten the edit/compile/debug
4982 cycle for low-level changes to SBCL itself, and a new
4983 :SB-AFTER-XC-CORE target feature to control the generation of
4984 the after-xc.core file needed by slam.sh.
4985 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4986 COMPILE-FILE is no longer supported, so that now every function
4987 gets an entry point, so that block compilation looks a little
4988 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4989 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4990 returns the number of bytes consed since the system started,
4991 rather than the number consed since the first time the function
4992 was called. (The new definition parallels ANSI functions like
4993 CL:GET-INTERNAL-RUN-TIME.)
4994 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4995 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4996 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4997 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4998 * Fasl file version numbers are now independent of the target CPU,
4999 since historically most system changes which required version
5000 number changes have affected all CPUs equally. Similarly,
5001 the byte fasl file version is now equal to the ordinary
5004 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5005 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5006 is no longer recognized. I apologize for this, because it was
5007 listed in SB-EXT as a supported extension, but I found that
5008 its existing behavior was poorly specified, as well as incorrectly
5009 specified, and it looked like too much of a mess to straighten it
5010 out. I have enough on my hands trying to get ANSI stuff to work..
5011 * many patches ported from CMU CL by Martin Atzmueller, with
5012 half a dozen bug fixes in pretty-printing and the debugger, and
5013 half a dozen others elsewhere
5014 * fixed bug 13: Floating point infinities are now supported again.
5015 They might still be a little bit flaky, but thanks to bug reports
5016 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5017 as flaky as they were.
5018 * The --noprogrammer command line option is now supported. (Its
5019 behavior is slightly different in detail from what the old man
5020 page claimed it would do, but it's still appropriate under the
5021 same circumstances that the man page talks about.)
5022 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5023 are now supported, and enabled by default. Thus, the compiler can
5024 handle many floating point and complex operations much less
5025 inefficiently. (Thus e.g. you can implement a complex FFT
5027 * The compiler now detects type mismatches between DECLAIM FTYPE
5028 and DEFUN better, and implements CHECK-TYPE more correctly, and
5029 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5030 thanks to patches from Martin Atzmueller.
5031 * various fixes to make the cross-compiler more portable to
5032 ANSI-conforming-but-different cross-compilation hosts (notably
5033 Lispworks for Windows, following bug reports from Arthur Lemmens)
5034 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5035 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5036 fixed thanks to Pierre Mai's CMU CL patches.
5037 * fixes to keep the system from overflowing internal counters when
5038 it tries to use i/o buffers larger than 16M bytes
5039 * fixed bug 45a: Various internal functions required to support
5040 complex special functions have been merged from CMU CL sources.
5041 (When I was first setting up SBCL, I misunderstood a compile-time
5042 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5043 * improved support for type intersection and union, fixing bug 12
5044 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5045 more obscure bugs as well
5046 * some steps toward byte-compiling non-performance-critical
5047 parts of the system, courtesy of patches from Martin Atzmueller
5048 * Christophe Rhodes has made some debian packages of sbcl at
5049 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5050 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5051 stable, but are nonetheless usable. When he's ready, I'd be happy
5052 to add them to the SourceForge "File Releases" section. (And if
5053 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5054 * new fasl file format version number (because of changes in
5055 internal representation of (OR ..) types to accommodate the new
5056 support for (AND ..) types, among other things)
5058 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5059 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5061 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5063 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5064 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5065 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5066 * DESCRIBE now works on structure objects again.
5067 * Most function call argument type mismatches are now handled as
5068 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5069 know whether the function will be redefined before the call is
5070 executed. (The compiler could flag local calls with full WARNINGs,
5071 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5072 it doesn't keep track of enough information to know whether calls
5073 are local in this sense.)
5074 * Compiler output is now more verbose, with messages truncated
5075 later than before. (There should be some supported way for users
5076 to override the default verbosity, but I haven't decided how to
5077 provide it yet, so this behavior is still controlled by the internal
5078 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5079 src/compiler/ir1util.lisp.)
5080 * Fasl file format version numbers have increased again, because
5081 support for the Gray streams extension changes the layout of the
5082 system's STREAM objects.
5083 * The Gray subclassable streams extension now works, thanks to a
5084 patch from Martin Atzmueller.
5085 * The full LOAD-FOREIGN extension (not just the primitive
5086 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5087 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5088 but like most other programs, it defaults to copying the Unix
5089 environment from the original process instead of starting the
5090 new process in an empty environment.
5091 * Extensions which manipulate the Unix environment now support
5092 an :ENVIRONMENT keyword option which doesn't smash case or
5093 do other bad things. The CMU-CL-style :ENV option is retained
5094 for porting convenience.
5095 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5096 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5098 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5100 * A patch from Martin Atzmueller seems to have solved the SIGINT
5101 problem, and as far as we know, signal-handling now works cleanly.
5102 (If you find any new bugs, please report them!)
5103 * The system no longer defaults Lisp source file names to types
5104 ".l", ".cl", or ".lsp", but only to ".lisp".
5105 * The compiler no longer uses special default file extensions for
5106 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5107 seems to expect a single default extension for all compiled code,
5108 and there's no compelling reason to try to stretch the standard
5109 to allow two different extensions.) Instead, byte-compiled files
5110 default to the same extension as native-compiled files.
5111 * Fasl file format version numbers have increased again, because
5112 a rearrangement of internal implementation packages made some
5113 dumped symbols in old fasl files unreadable in new cores.
5114 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5115 many fewer weird special cases.
5116 * Bug #17 (differing COMPILE-FILE behavior between logical and
5117 physical pathnames) has been fixed, and some related misbehavior too,
5118 thanks to a patch from Martin Atzmueller.
5119 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5120 by Tim Moore, ported to SBCL by Martin Atzmueller.
5121 * Martin Atzmueller fixed several filesystem-related problems,
5122 including bug #36, in part by porting CMU CL patches, which were
5123 written in part by Paul Werkowski.
5124 * More compiler warnings in src/runtime/ are gone, thanks to
5125 more patches from Martin Atzmueller.
5126 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5129 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5131 * DESCRIBE now works on CONDITION objects.
5132 * The debugger now handles errors which arise when trying to print
5133 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5135 * The build system now uses an additional file, customize-target-features.lisp,
5136 to allow local modifications to the target *FEATURES* list. (The point of
5137 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5138 debugging features enabled, without having to worry about propagating it
5139 into everyone's system when I do a "cvs update".) When no
5140 customize-target-features.lisp file exists, the target *FEATURES* list
5141 should be constructed the same way as before.
5142 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5143 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5144 warn about behavior which is undefined under the ANSI spec. Note: This
5145 is specified by ANSI, but it's not very popular with programmers.
5146 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5147 macro in the SBCL sources for an example of a workaround which you
5148 might use to make portable ANSI-standard code which does what you want.
5149 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5150 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5151 when it's used as a non-toplevel form. (This is required in order
5152 to implement the DEFCONSTANT-EQX macro.)
5153 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5154 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5155 funny things, due to bugs in the implementation of EVAL-WHEN
5156 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5157 non-toplevel DEFCONSTANTs are uncommon.)
5158 * The core file version number and fasl file version number have been
5159 incremented, because the old noncompliant DEFCONSTANT behavior involved
5160 calling functions which no longer exist, and because I also took the
5161 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5162 * fixed bug 1 (error handling before read-eval-print loop starts), and
5163 redid debugger restarts and related debugger commands somewhat while
5165 ** The QUIT debugger command is gone, since it did something
5166 rather different than the SB-EXT:QUIT command, and since it never
5167 worked properly outside the main toplevel read/eval/print loop.
5168 Invoking the new TOPLEVEL restart provides the same functionality.
5169 ** The GO debugger command is also gone, since you can just invoke
5170 the CONTINUE restart directly instead.
5171 ** The TOP debugger command is also gone, since it's redundant with the
5172 FRAME 0 command, and since it interfered with abbreviations for the
5174 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5176 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5177 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5178 some porting work by Martin Atzmueller)
5179 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5180 with a boatload of patches which he ported to SBCL. Now that those
5182 ** The system tries to make sure that its low-priority messages
5183 are prefixed by semicolons, to help people who like to use
5184 syntax highlighting in their ILISP buffer. (This patch
5185 was originally due to Raymond Toy.)
5186 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5187 patches originally written by Raymond Toy.
5188 ** The compiler understands coercion between single-value and
5189 multiple-VALUES type expressions better, getting rid of some very
5190 weird behavior, thanks to patches originally by Robert MacLachlan
5191 and Douglas Crosher.
5192 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5193 lambda lists, thanks to a patch originally by Pierre Mai.
5194 ** The system no longer bogusly warns about "abbreviated type
5196 ** The compiler gets less confused by inlining and RETURN-FROM,
5197 thanks to some patches originally by Tim Moore.
5198 ** The system no longer hangs when dumping circular lists to fasl
5199 files, thanks to a patch originally from Douglas Crosher.
5200 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5201 undefined function error.
5202 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5203 in structure slot initforms) for now, documented workaround instead:-|
5204 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5205 * fixed bug 5: added stubs for various Gray stream functions called
5206 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5207 installed, at least appropriate type errors are generated
5208 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5209 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5210 consistently in DEFMETHOD forms.
5211 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5212 it doesn't seem to affect SBCL after all
5213 * The C runtime system now builds with better optimization and many
5214 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5216 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5218 * The system is now under CVS at SourceForge (instead of the
5219 CVS repository on my home machine).
5220 * The new signal handling code has been tweaked to treat register
5221 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5222 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5223 downstream, e.g. in debug-int.lisp, has implicit dependencies
5224 on the unsignedness of integer representation of machine words,
5225 and that caused the system to bomb out with infinite regress
5226 when trying to recover from type errors involving signed values,
5227 e.g. (BUTLAST '(1 2 3) -1).)
5228 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5229 (This was one of the bugs Peter Van Eynde reported back in July.)
5230 * The system now uses code inspired by Colin Walters' O(N)
5231 implementation of MAP (from the cmucl-imp@cons.org mailing
5232 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5233 inline the MAP operation, and there is more than one
5234 sequence argument to the MAP call (so that it can't just
5235 do ETYPECASE once and for all based on the type of the
5236 single sequence argument). (The old non-inline implementation
5237 of the general M-argument sequence-of-length-N case required
5238 O(M*N*N) time when any of the sequence arguments were LISTs.)
5239 * The QUIT :UNIX-CODE keyword argument has been renamed to
5240 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5241 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5243 * Raymond Wiker's patches to port dynamic loading from Linux to
5244 FreeBSD have been added.
5245 * The BUGS file is now more nearly up to date, thanks in large part
5246 to Martin Atzmueller's review of it.
5247 * The debugger now flushes standard output streams before it begins
5248 its output ("debugger invoked" and so forth).
5249 * The core version number and fasl file version number have both
5250 been incremented, because of incompatible changes in the layout
5252 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5253 used to not be called for a saved Lisp image.)
5254 * Martin Atzmueller's version of a patch to fix a compiler crash,
5255 as posted on sbcl-devel 13 September 2000, has been installed.
5256 * Instead of installing Martin Atzmueller's patch for the
5257 compiler transform for SUBSEQ, I deleted the compiler transform,
5258 and transforms for some similar consing operations.
5259 * A bug in signal handling which kept TRACE from working on OpenBSD
5261 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5262 away by constant folding
5263 * The system now defines its address space constants in one place
5264 (in the Lisp sources), and propagates them automatically elsewhere
5265 (through GENESIS and the sbcl.h file). Therefore, patching the
5266 address map is less unnecessarily tedious and error-prone. The
5267 Lisp names of address space constants have also been systematized.
5268 * CVS tags like dollar-Header-dollar have been removed from
5269 the sources, because they have never saved me trouble and
5270 they've been source of trouble working with patches and other
5271 diff-related operations.
5272 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5273 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5275 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5277 * The system has been ported to OpenBSD.
5278 * The system now compiles with a simple "sh make.sh" on the systems
5279 that it's supported on. I.e., now you no longer need to tweak
5280 text in the target-features.lisp-expr and symlinks in src/runtime/
5281 by hand, the make.sh takes care of it for you.
5282 * The system is no longer so grossly inefficient when compiling code
5283 involving vectors implemented as general (not simple) vectors (VECTOR T),
5284 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5285 which dares to use the various sequence functions on non-simple
5286 vectors, takes less of a performance hit.
5287 * There is now a primitive type predicate VECTOR-T-P
5288 to test for the (VECTOR T) type, so that e.g.
5289 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5290 can now be compiled with some semblance of efficiency. (The old code
5291 turned the type declaration into a full call to %TYPEP at runtime!)
5292 * AREF on (VECTOR T) is still not fast, since it's still compiled
5293 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5294 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5295 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5296 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5297 without making full calls to SUBTYPEP at runtime.
5298 (Some analogous efficiency issues for non-simple vectors specialized to
5299 element types other than T, or for non-simple multidimensional arrays,
5300 have not been addressed. They could almost certainly be handled the
5301 same way if anyone is motivated to do so.)
5302 * The changes in array handling break binary compatibility, so
5303 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5304 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5305 instead of (VALUES T T).
5306 * By following the instructions that Dan Barlow posted to sbcl-devel
5307 on 2 July 2000, I was able to enable primitive dynamic object
5308 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5309 functionality is not implemented (since it calls ld to resolve
5310 library references automatically, requiring RUN-PROGRAM for its
5311 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5312 try to resolve library references) is now supported.
5313 * The system now flushes the standard output streams when it terminates,
5314 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5315 them at several other probably-convenient times, e.g. in each pass of
5316 the toplevel read-eval-print loop, and after evaluating a form given
5317 as an "--eval" command-line option. (These changes were motivated by a
5318 discussion of stream flushing issues on cmucl-imp in August 2000.)
5319 * The source transform for TYPEP of array types no longer assumes
5320 that an array whose element type is a not-yet-defined type
5321 is implemented as an array of T, but instead punts, so that the
5322 type will be interpreted at runtime.
5323 * There is now some support for cross-compiling in make.sh: each of
5324 the phases of make.sh has its own script. (This should be transparent
5325 to people doing ordinary, non-cross-compile builds.)
5326 * Since my laptop doesn't have hundreds of megabytes of memory like
5327 my desktop machine, I became more motivated to do some items on
5328 my to-do list in order to reduce the size of the system a little:
5329 ** Arrange for various needed-only-at-cold-init things to be
5330 uninterned after cold init. To support this, those things have
5331 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5332 symbols with such names are now uninterned after cold init).
5333 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5334 fasl files for cold load.
5335 ** Remove the old compiler structure pooling code (which used to
5336 be conditional on the target feature :SB-ALLOC) completely.
5337 ** Redo the representation of some data in cold init to be more compact.
5338 (I also looked into supporting byte compiled code at bootstrap time,
5339 which would probably reduce the size of the system a lot, but that
5340 looked too complicated, so I punted for now.)
5341 * The maximum signal nesting depth in the src/runtime/ support code has
5342 been reduced from 4096 to 256. (I don't know any reason for the very
5343 large old value. If the new smaller value turns out to break something,
5344 I'll probably just bump it back up.)
5345 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5347 * Many, many bugs reported by Peter Van Eynde have been added to
5348 the BUGS list; some have even been fixed.
5349 * While enabling dynamic object file loading, I tried to make the
5350 code easier to understand, renaming various functions and variables
5351 with less ambiguous names, and changing some function calling
5352 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5353 * While trying to figure out how to do the OpenBSD port, I tried to
5354 clean up some of the code in src/runtime/. In particular, I dropped
5355 support for non-POSIX signal handling, added various comments,
5356 tweaked the code to reduce the number of compilation warnings, and
5357 renamed some files to increase consistency.
5358 * To support the new automatic configuration functionality in make.sh,
5359 the source file target-features.lisp-expr has been replaced with the
5360 source file base-target-features.lisp-expr and the machine-generated
5361 file local-target-features.lisp-expr.
5362 * fixed a stupid quoting error in make.sh so that using CMU CL
5363 "lisp -batch" as cross-compilation host works again
5365 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5367 * DESCRIBE no longer tries to call itself recursively to describe
5368 bound/fbound values, so that it no longer fails on symbols which are
5369 bound to themselves (like keywords, T, and NIL).
5370 * DESCRIBE now works on generic functions.
5371 * The printer now prints less-screwed-up representations of closures
5372 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5373 * A private symbol is used instead of the :EMPTY keyword previously
5374 used to mark empty slots in hash tables. Thus
5375 (DEFVAR *HT* (MAKE-HASH-TABLE))
5376 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5377 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5378 now does what ANSI says that it should. (You can still get
5379 similar noncompliant behavior if bang on the hash table
5380 implementation with all the symbols you get back from
5381 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5382 This breaks binary compatibility, since tests for equality to
5383 :EMPTY are wired into things like the macroexpansion of
5384 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5386 * There's now a minimal placeholder implementation for CL:STEP,
5387 as required by ANSI.
5388 * An obscure bug in the interaction of the normal compiler, the byte
5389 compiler, inlining, and structure predicates has been patched
5390 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5391 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5393 * Missing ordinary arguments in a macro call are now detected even
5394 when the macro lambda list contains &KEY or &REST.
5395 * The debugger no longer complains about encountering the top of the
5396 stack when you type "FRAME 0" to explicitly instruct it to go to
5397 the top of the stack. And it now prints the frame you request even
5398 if it's the current frame (instead of saying "You are here.").
5399 * As specified by ANSI, the system now always prints keywords
5400 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5402 * The default initial SIZE of HASH-TABLEs is now smaller.
5403 * Type information from CLOS class dispatch is now propagated
5404 into DEFMETHOD bodies, so that e.g.
5405 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5407 is now basically equivalent to
5408 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5409 (DECLARE (TYPE SINGLE-FLOAT X))
5411 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5412 operation, without having to do run-time type dispatch.
5413 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5414 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5415 * Since I don't seem to be making big file reorganizations very often
5416 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5417 is overflowing my ability to conveniently back them up), I've finally
5418 checked the system into CVS. (The CVS repository is on my home system,
5419 not at SourceForge -- putting it on SourceForge might come later.)
5420 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5421 high-level GC-NOTIFY-FOO functions send their output. (There's
5422 still very little control of where low-level verbose GC functions
5423 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5424 less than it used to -- the GC-NOTIFY-FOO functions are now under
5425 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5426 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5427 in only one place in the source code, and propagates it automatically
5428 everywhere that it's needed. Thus e.g. when I bump the version from
5429 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5430 * The C source files now include boilerplate legalese and documentation
5431 at the head of each file (just as the Lisp source files already did).
5432 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5433 to his page will be replaced with a link to his new CLiki service.
5435 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5437 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5438 * The build process now looks for GNU make under the default name "gmake",
5439 instead of "make" as it used to. If GNU make is not available as "gmake"
5440 on your system, you can change this default behavior by setting the
5441 GNUMAKE environment variable.
5442 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5443 can build without error under CMU CL.
5445 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5447 * There is now a partial SBCL user manual (with some new text and some
5448 text cribbed from the CMU CL manual).
5449 * The beginnings of a profiler have been added (starting with the
5450 CMU CL profiler and simplifying and cleaning up). Eventually the
5451 main interface should be through the TRACE macro, but for now,
5452 it's still accessed through vaguely CMU-CL-style functions and macros
5453 exported from the package SB-PROFILE.
5454 * Some problems left over from porting CMU CL to the new
5455 cross-compilation bootstrap process have been cleaned up:
5456 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5457 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5458 part when getting rid of the compiler *BACKEND* stuff.)
5459 ** The value of *NULL-TYPE* was screwed up, because it was
5460 being initialized before the type system knew the final
5461 definition of the 'NULL type. This screwed up several key
5462 optimizations in the compiler, causing inefficiency in all sorts
5463 of places. (I found it because I wanted to understand why
5464 GET-INTERNAL-RUN-TIME was consing.)
5465 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5466 PROCLAIM FTYPE information. Unfortunately this broke binary
5467 compatibility again, since now the forms output by DEFGENERIC
5468 to refer to functions which didn't exist in 0.6.3.
5469 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5470 can use the new (as of 0.6.3) transform for SOME into MAP into
5472 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5473 values to (INTEGER 0 1000000), so that the time code will no longer
5474 occasionally get blown up by Linux returning 1000000 microseconds
5475 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5476 its output conform to the ANSI spec. (Alas, this makes its output
5477 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5478 * A full call to MAP NIL with a single sequence argument no longer conses.
5479 * fixes to problems pointed out by Martin Atzmueller:
5480 * The manual page no longer talks about multiprocessing as though
5481 it were currently supported.
5482 * The ILISP support patches have been removed from the distribution,
5483 because as of version 5.10.1, ILISP now supports SBCL without us
5484 having to maintain patches.
5485 * added a modified version of Raymond Toy's recent CMU CL patch for
5486 EQUALP comparison of HASH-TABLE
5488 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5490 * The system still can't cross-compile itself with
5491 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5492 entails), but at least it can compile more of itself that way
5493 than it used to be able to, and various buglets which were uncovered
5494 by trying to cross-compile itself that way have now been fixed.
5495 * This release breaks binary compatibility again. This time
5496 at least I've incremented the FASL file format version to 2, so that the
5497 problem can be detected reliably instead of just causing weird errors.
5498 * various new style warnings:
5499 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5500 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5501 ** using the lexical binding of a variable named in the *FOO* style
5502 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5503 as specified by ANSI.
5504 * *RANDOM-STATE* is no longer automatically initialized from
5505 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5506 default behavior of the system is to repeat its behavior every time
5507 it's run. If you'd like to change this behavior, you can always
5508 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5509 old convention there was no comparably easy way to get the system to
5510 repeat its behavior every time it was run.
5511 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5512 FTYPE declarations has been removed, in favor of their ANSI
5513 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5514 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5515 the types of their sequence arguments can be determined at compile time.
5516 This is done through a new open code expansion for MAP which eliminates
5517 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5518 argument types can be determined at compile time.
5519 * The optimizer now transforms COERCE into an identity operation when it
5520 can prove that the coerced object is already of the correct type. (This
5521 can be a win for machine generated code, including the output of other
5522 optimization transforms, such as the MAP transform above.)
5523 * Credit information has been moved from source file headers into CREDITS.
5524 * Source file headers have been made more standard.
5525 * The CASE macro now compiles without complaining even when it has
5528 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5530 * (Note that the way that the PCL macroexpansions were rewritten
5531 to accommodate the change in DEFGENERIC below breaks binary
5532 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5533 not run under sbcl-0.6.2. Once we get out of alpha releases,
5534 i.e. hit release 1.0.0, we'll probably try to maintain binary
5535 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5536 and sbcl-1.4.4. Until then, however, it might be fairly common
5537 for maintenance releases to break binary compatibility.)
5538 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5540 * The reporting of unhandled signals has been changed to print some
5541 explanatory text as well as the report form. (Previously only
5542 the report form was printed.)
5543 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5544 it defines, so that the compiler no longer issues undefined function
5545 warnings for compiled-but-not-yet-loaded generic functions.
5546 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5547 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5548 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5549 section of the ANSI spec are supported.
5550 * The "" nickname for the "KEYWORD" package has been removed.
5551 The reader still handles symbol tokens which begin with a package marker
5552 as keywords, but it doesn't expose its mechanism for doing so in the
5553 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5554 * The system now issues STYLE-WARNINGs for contradictory TYPE
5555 proclamations. (Warnings for contradictory FTYPE proclamations would
5556 be nice too, but those can't be done usefully unless the type system
5557 is made smarter about FUNCTION types.)
5558 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5559 systematized, so that "*target-*.lisp is supposed to exist only on the
5560 target and imply that there's a related file which exists on the
5561 host, and *host-*.lisp is supposed to exist only on the host and imply
5562 that there's a related file which exists on the target. This involves a
5563 lot of renaming. Hopefully the acute confusion caused by the renaming
5564 will be justified by the reduction in chronic confusion..
5565 ** runtime-type.lisp -> early-target-type.lisp
5566 ** target-type.lisp -> late-target-type.lisp
5567 ** early-host-format.lisp -> early-format.lisp
5568 ** late-host-format.lisp -> late-format.lisp
5569 ** host-error.lisp -> misc-error.lisp
5570 ** early-error.lisp -> early-target-error.lisp
5571 ** late-error.lisp -> late-target-error.lisp
5572 ** host-defboot.lisp -> early-defboot.lisp
5573 ** code/misc.lisp -> code/target-misc.lisp
5574 ** code/host-misc.lisp -> code/misc.lisp
5575 ** code/numbers.lisp -> code/target-numbers.lisp
5576 ** code/early-numbers.lisp -> numbers.lisp
5577 ** early-host-type.lisp -> early-type.lisp
5578 ** late-host-type.lisp -> late-type.lisp
5579 ** host-typep.lisp -> typep.lisp
5580 ** load.lisp -> target-load.lisp
5581 ** host-load.lisp -> load.lisp
5582 ** host-disassem.lisp -> disassem.lisp
5583 ** host-insts.lisp -> insts.lisp
5584 ** byte-comp.lisp -> target-byte-comp.lisp
5585 ** host-byte-comp.lisp -> byte-comp.lisp
5586 ** host-signal.lisp -> signal.lisp
5587 ** host-defstruct.lisp -> defstruct.lisp
5588 ** late-target-type.lisp -> deftypes-for-target.lisp
5589 Furthermore, several other previously target-only files foo.lisp (e.g.
5590 hash-table.lisp and random.lisp) have been split into a target-and-host
5591 foo.lisp file and a target-only target-foo.lisp file, with their key type
5592 definitions in the target-and-host part, so that the cross-compiler will
5593 know more about target types.
5594 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5595 gone away. In their place are various *BACKEND-FOO* variables
5596 corresponding to the slots of the old structure.
5597 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5598 into the target SBCL has been fixed.
5599 * The chill.lisp system for loading cold code into a running SBCL
5601 * Support for the CMU CL "scavenger hook" extension has been removed.
5602 (It was undocumented and unused in the CMU CL sources that SBCL was
5603 derived from, and stale in sbcl-0.6.1.)
5604 * Various errors in the cross-compiler type system were detected
5605 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5606 (enabling various consistency checks). Many of them were fixed,
5607 but some hard problems remain, so the compiler is back to
5608 running without *TYPE-SYSTEM-INITIALIZED* for now.
5609 * As part of the cross-compiler type system cleanup, I implemented
5610 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5611 * I have started adding UNCROSS calls throughout the type system
5612 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5613 on cross-compiler input files will be able to go away, and various
5615 * CONSTANTP now returns true for quoted forms (as explicitly required
5618 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5620 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5621 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5622 (MAKE-LIST -1). In the longer term, it ought to become true
5623 that declarations are assertions even at SAFETY 1. For now, it's not
5624 quite true even at SAFETY 3, but it's at least more nearly true..
5625 (Note that this change seems to increases the size of the system by
5626 O(5%) and to decrease the speed of the compiler by 20% or more.)
5627 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5628 for the problem of printing dozens of lines of distracting information
5629 about low-level system machinery as part of the top stack frame
5630 on entry to the debugger when an undefined function was called.
5631 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5632 is not reset to COMMON-LISP-USER.
5633 * Compilation of stuff related to dyncount.lisp has been made conditional
5634 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5635 smaller. The various dyncount-related symbols have been moved into
5636 a new "SB-DYNCOUNT" package.
5637 * tty-inspect.lisp has been renamed to inspect.lisp.
5638 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5639 feature has gone away. (When we eventually port to other flavors of
5640 libc and/or Unix, we'll try to make the differences between flavors
5641 invisible at the user level.)
5642 * Various other *FEATURES* tags, and/or their associated conditionals,
5643 have been removed if obsolescent, or given better documentation, or
5644 sometimes given more-mnemonic names.
5646 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5648 * tidied up "make.sh" script
5649 * tidied up system directory structure
5650 * better "clean.sh" behavior
5651 * added doc/FOR-CMUCL-DEVELOPERS
5652 * many many small tweaks to output format, e.g. removing possibly-confusing
5653 trailing #\. character in DESCRIBE-INSTANCE
5654 * (EQUALP #\A 'A) no longer signals an error.
5655 * new hashing code, including EQUALP hashing
5656 * tidied up Lisp initialization and toplevel
5657 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5658 * command line argument processing
5659 * added POSIX-GETENV function to deal with Unix-ish environment variables
5660 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5661 terminating SBCL on EOF
5662 * non-verbose GC by default
5663 * There is no more "sbcl" shell script; the sbcl file is now the C
5664 runtime executable (just like CMU CL).
5665 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5667 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5668 symbol and package information as Lisp native symbol and package objects
5669 instead of strings naming symbols and strings naming packages. This way,
5670 whenever packages are renamed (as in warm init), debug information is
5671 transformed along with everything else.
5672 * tweaked the optimization policy declarations which control the building
5673 of SBCL itself. Now, among other things, the system no longer saves
5674 source location debugging information. (This helps two problems at once
5675 by reducing SBCL size and by keeping SBCL from trying to look for its
5676 sources -- which may not exist -- when reporting errors.)
5677 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5678 debugging and testing purposes
5679 * cleaned up printing, making the printer call PRINT-OBJECT for
5680 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5681 methods, giving nearly-ANSI behavior
5682 * converted almost all special variables to use *FOO* naming convention
5683 * deleted PARSE-TIME functionality, since it can be done portably
5684 * moved some files out of cold init into warm init
5685 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5687 * regularized formatting of source files
5688 * added an install.sh script
5689 * fixed ridiculous memory usage of cross-compiler by making
5690 compiler/alloc.lisp not try to do pooling unless it can hook
5691 itself into the GC of the cross-compilation host. Now the system
5692 builds nicely on my old laptop.
5693 * added :SB-ALLOC in target-features.lisp-expr
5694 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5695 was not implemented)
5696 * re-did condition handling and note reporting in the compiler. Notes
5697 are no longer handled by signalling conditions. Style warnings
5698 and warnings are handled more correctly and reported in such a way
5699 that it's easy to find one or the other in your output (so that you
5700 can e.g. figure out which of many problems caused COMPILE-FILE to
5702 * changed the severity of several compiler warnings from full WARNING
5703 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5704 compiler note reporting so that it doesn't use the condition system
5705 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5706 COMPILE-FILE command)
5707 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5708 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5709 no longer supported, since their implementation was deeply intertwingled
5710 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5711 * removed bogus "support" for compiler macros named (SETF FOO), and
5712 removed the compiler macro for SETF INFO (but only after making a fool
5713 of myself on the cmucl-imp mailing list by posting a bogus patch for
5714 DEFINE-COMPILER-MACRO..)
5715 * Compiled files containing forms which have side effects on the Lisp
5716 reader (such as DEFPACKAGE forms) are now handled more correctly.
5717 (Compiler queuing of top level lambdas has been suppressed by setting
5718 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5719 * deleted various currently-unused source files, e.g. gengc.lisp. They
5720 may be added back at some point e.g. when porting to other architectures,
5721 but until they are it's distracting to distribute them and to try to
5723 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5724 there were so many of them they're just distractions, and UNCROSS is
5725 known to be able to handle the current sources
5726 * moved PROFILE functionality into TRACE, so that it will be clear
5727 how the wrapping and unwrapping of functions when you profile them
5728 interacts with the wrapping and unwrapping of functions when you
5729 trace them. (Actually, the functionality isn't there yet, but at least
5730 the interface specification is there. Hopefully, the functionality will
5731 arrive with some future maintenance release.)
5732 * removed host-oops.lisp
5733 * changed signature of QUIT function to allow UNIX-CODE argument
5734 * fixed READ-SEQUENCE bug
5735 * tweaked verbose GC output so that it looks more like the progress
5736 output that ANSI specifies for functions like LOAD
5737 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5738 * added <http://sbcl.sourceforge.com> to the banner information printed by