1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.43:
3 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
4 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
6 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
7 * incompatible change: FD-STREAMS no longer participate in the serve-event
8 event-loop by default. (lp#316072)
9 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
10 affects streams from CL:OPEN.
11 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
12 default, but this is liable to change: applications needing serve-event
13 for socket streams should explicitly request it using :SERVE-EVENTS T
15 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
17 * enhancement: CLOS effective method functions and defclass slot typechecking
18 function now have debug names for use in backtraces and profiles.
19 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
21 * enhancement: symbols are printed using fully qualified names in several
22 error and warning messages which are often associated with package
23 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
24 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
25 thanks to Andrew Golding)
26 * bug fix: reading /proc files on Linux works. (lp#425199)
27 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
29 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
30 breaking code that tried to write the value of a printer control variable.
31 (lp#581564, thanks to Stas Boukarev)
32 * bug fix: WRITE compiler macro did not handle output stream designators
33 correctly. (lp#598374, thanks to Stas Boukarev)
34 * bug fix: better availability of names of foreign functions in backtraces
35 on Linux. (lp#626962, thanks to Stas Boukarev)
36 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
37 lp#627581, thanks to Josh Elsasser and Jim Wise)
38 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
39 thanks to Josh Elsasser)
40 * bug fix: using aliases for builtin classes as defmethod specializers
41 without adding DEFTYPEs for them works. (lp#618387)
42 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
44 * bug fix: legally dynamic-extent lists and vectors used as
45 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
46 * bug fix: inline-expansion creating references to dead lambda-variables
47 (lp#454681, thanks to Alexey Dejneka)
48 * bug fix: better error message for bogus numerical arguments to RANDOM.
49 (lp#598986, thanks to Stas Boukarev)
50 * bug fix: the compiler occasionally inlined references from incompatible
51 environments occurs. (lp#308951)
52 * bug fix: the compiler threw an error when trying to compile a local
53 function (labels or flet) known to take a specialized complex argument.
54 (not in launchpad, reported by sykopomp in #lispgames)
55 * bug fix: package-locks failed to protect against compile-time effects of
56 DEFUN when the symbol previously had a macro definition. (lp#576637)
57 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
58 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
59 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
60 * bug fix: evaluation in debugger REPL works using the global context when
61 in frames that do not have sufficient debug information.
62 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
64 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
66 * bug fix: interrupt taking longer than the requested period caused SLEEP
67 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
69 changes in sbcl-1.0.42 relative to sbcl-1.0.41
71 ** Cross-compilation host is now specified to make.sh using
72 command-line argument --xc-host=<command> instead of a positional
73 argument. (thanks to Daniel Herring)
74 ** Install location can be specified to make.sh using command-line
75 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
76 * optimization: The default implementation of
77 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
78 * enhancement: Explicit memory barrier operations are now available for use
79 by multithreaded code. See documentation for details.
80 * enhancement: Experimental support for threading on Linux/PPC.
81 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
82 * bug fix: EXPT signals an error if first argument is a zero and second
83 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
84 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
85 (lp#576594, thanks to Roman Marynchak)
86 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
87 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
89 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
90 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
91 cached, leading to many fewer expensive calls to
92 COMPUTE-APPLICABLE-METHODS.
93 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
94 CLASS argument, search for and call an appropriate optimized ctor function
96 * bug fix: WRITE always returns the correct value.
98 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
99 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
100 * bug fix: Name conflicts between symbols passed as arguments to a single
101 call to IMPORT no longer add multiple symbols with the same name to the
102 package (detectable via DO-SYMBOLS).
103 * bug fix: support building without the dlshim on darwin x86 and x86-64
105 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
107 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
108 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
110 * bug fix: linkage-table entries on PPC now no longer overflow their
111 space allocation (potentially causing crashes if they are written out
113 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
114 platforms, preventing the GC from seeing stale pointers on the control
115 stack in subsequent GCs (which would, and does, break invariants).
116 * bug fix: 32-bit unicode external formats now work on big-endian systems.
117 * bug fix: Literal characters with code points greater than about 32767
118 now work on PPC UNICODE builds.
119 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
120 high order bits are explicitly cleared out. In some contrived situations,
121 this could lead to wrong results in mixed real/complex float arithmetic.
122 * bug fix: Fix function/macro redefinition warnings when building with
123 clisp. (lp#576787, thanks to Josh Elsasser)
124 * new platform: experimental support for ppc/openbsd (thanks to Josh
126 * bug fix: Floating-point traps now work on ppc/linux.
128 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
129 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
130 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
131 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
132 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
133 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
134 SB-THREAD:GRAB-MUTEX.
135 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
136 contain additional data structures and tools for concurrent programming;
137 at the moment it contains a lock-free queue, and a lock-free mailbox
139 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
140 GET-MUTEX but takes &key rather than &optional parameters. Also added
141 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
143 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
144 SB-THREAD:WAIT-ON-SEMAPHORE.
145 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
147 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
148 conditions to defer the deadline for forever.
149 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
151 * enhancement: errors from NO-APPLICABLE-METHOD and
152 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
153 generic function call.
154 * enhancement: SB-BSD-SOCKET improvements
155 ** sockets and socket streams now have a more informative printed
156 representation based on the corresponding SOCKET-NAME and
158 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
160 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
161 CL:CLOSE when appropriate, and no longer disassociates the stream
162 from the socket if close failed. (lp#543951)
163 * improvements to the instrumenting profiler
164 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
165 ** optimization: counters no longer use locks for the overflow mode.
166 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
167 incurred an off-by-one miscount.
168 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
169 * enhancement: improved DEFMETHOD pretty-printing.
170 * enhancement: perform range reduction when arguments are too large for
171 x87's transcendentals (instead of returning 0). (lp#327192)
172 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
173 some of CL-PPCRE's macros. (lp#570079)
174 * enhancement: our machine code is slightly less hostile to valgrind on
176 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
177 to Robert Swindells and Aleksej Saushev)
178 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
179 * bug fix: a rare case of startup-time page table corruption.
180 * bug fix: a semaphore with multiple waiters and some of them unwinding due
181 to timeouts could be left in an inconsistent state.
182 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
183 * bug fix: misoptimization of multiplication by one in
184 (SB-C::FLOAT-ACCURACY 0) policies.
185 * bug fix: miscounts in SB-PROFILE.
186 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
187 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
188 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
189 up itself" (March 2010) for further details.
190 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
191 against length of the list if the element is found before the specified
192 END is reached. (thanks to Alec Berryman, lp#554385)
193 * bug fix: errors signalled during package graph modification no longer
194 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
195 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
196 :SB-DOC feature. (lp#552564)
197 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
198 * bug fix: more robust runtime executable path detection. (lp#375549)
199 * bug fix: GCD always returns positive values. (lp#413680)
200 * bug fix: Converting division to multiplication by reciprocal handles
202 * bug fix: We were too eager in eliding range reduction tests on x87.
203 The maximal magnitude is 2^63, not 2^64.
204 * bug fix: Transforms for TRUNCATE don't die when the result is completely
206 * bug fix: Maybe restore buildability on Alpha.
207 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
209 * bug fix: RANDOM-STATE can be printed readably again.
210 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
211 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
212 types) could result in type mismatches during compilation.
214 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
215 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
216 stack frame thrown from.
217 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
218 compiler optimization qualities inside dynamic extent of its body.
219 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
220 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
222 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
223 constraint propgation, allowing better compilation eg. when used to
224 access structures with WITH-SLOTS. (lp#520366)
225 * optimization: the compiler is now more aware of the type of the underlying
226 storage vector for multidimensional simple arrays resulting in better code
227 for accessing such arrays.
228 * optimization: passing NIL as the environment argument to TYPEP no longer
229 inhibits optimizing it. (lp#309788)
230 * optimization: more efficient register usage when handling single-float
231 arguments on x86-64. (thanks to Lutz Euler)
232 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
233 pre-allocated temporary vectors. (lp#496249)
234 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
235 in :INITIAL-CONTENTS. (lp#523612)
236 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
237 functions. (lp#524707)
238 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
239 WITH-SLOTS usages during compilation.
240 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
241 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
242 all x86oid platforms with :UD2-BREAKPOINTS target feature.
243 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
244 instruction (tested on x86oid linux with ud2-breakpoints).
245 * bug fix: slam.sh now works on win32.
246 * bug fix: better differences of numeric types. (lp#309124)
247 * bug fix: arrays declared intersection and union types can have their
248 upgraded element type derived. (lp#316078)
249 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
250 threads started during profiling. (lp#472499)
251 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
253 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
254 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
255 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
256 values instead of signaling an error. (lp#309093)
257 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
259 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
260 declarations (lp#497321)
261 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
262 and failed to detect circular lists (lp#452008)
263 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
265 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
266 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
267 due to it, so that handlers can run.
268 * bug fix: reparsing undefined types if they have become defined since
270 * bug fix: missing &REST type in a proclamation for a function with both
271 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
272 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
273 expanded calls (lp#542174)
274 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
275 than just at toplevel form.
277 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
278 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
279 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
280 but work on type specifiers.
281 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
282 to name a type specifier.
283 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
284 specifier is valid where "valid" basically means "would be accepted as
285 second argument of TYPEP".
286 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
287 returns the function's declared, or derived FTYPE.
288 * new feature: SB-POSIX now supports accessing the d_ino member of
289 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
290 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
291 provide for seeding a RANDOM-STATE object with user-provided data or
292 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
293 attempt to initialize the returned state from the operating system's
294 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
295 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
296 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
297 * bug fix: Fix grammar and style issues for the docstrings of
298 printer-related variables and functions. (Thanks to mon_key; launchpad
300 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
302 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
303 in a row even though a handler defered the deadline long into the
305 * bug fix: A deadline handler was run without interrupts enabled for a
306 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
307 in infinitely spinning, non-killable threads.
308 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
309 before reaching the erring stack frame.
310 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
311 real power. (launchpad bug lp#525949)
312 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
313 GENCGC platforms. (launchpad bug lp#529014)
314 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
315 (launchpad bug lp#525916)
316 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
317 (Thanks to Robert Goldman)
319 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
320 * optimization: ROUND with a single single-float or double-float argument
321 is properly inlined when possible.
322 * optimization: Slightly better code is generated for integer<->float
323 conversions and for single-float<->double-float conversions on x86-64.
324 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
325 code for 32-bit and 64-bit rotations on x86-64.
326 * bug fix: The install script changes the ownership of directories as well
327 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
328 launchpad bug lp#508485)
329 * bug fix: TRUNCATE with a single single-float or double-float argument is
330 properly inlined when possible. (launchpad bug lp#489388)
331 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
332 no longer causes a compiler error on x86 and ppc.
333 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
334 always relative to *READTABLE* rather than the passed argument.
336 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
337 * minor incompatible change: threading support is now enabled by default
339 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
341 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
342 are now caught and reported just like errors during macroexpansion.
343 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
344 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
345 * enhancement: ASDF systems can now depends on SB-QUEUE.
346 * fixes and improvements related to Unicode and external formats:
347 ** bug fix: error handling and restart usage in the ucs-2 external format
349 ** there is now an implementation of the ucs-4 external format.
350 ** the utf-16 and utf-32 external formats are supported.
351 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
352 in the environment. setenv() and unsetenv() are also provided. (reported by
353 Fare Rideau; launchpad bug lp#460455)
354 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
355 loading. This ensures sensible errors for .FASL files from other
356 implementations on case-insensitive filesystems. (reported by Willem
357 Broekema; launchpad bug lp#489417)
358 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
359 Willem Broekema; launchpad bug lp#489698).
360 * bug fix: some minor code rearrangements to reenable warning-free building
361 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
362 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
364 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
367 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
368 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
369 * improvement: support O_LARGEFILE access to files larger than 2GB on
370 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
371 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
372 definitions for methods specializing on the passed class itself.
373 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
374 definitions for methods specializing on the passed class itself, or on
376 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
377 about itself during the build (e.g. for M-? in Slime), if this flag is
378 enabled in customize-target-features.lisp. This will increase the core
379 size by about 5-6mb, though, so it's mostly interesting to SBCL
381 * new feature: various GENCGC tuning parameters have been experimentally
382 documented and exported from SB-EXT. See documentation for details.
383 * fixes and improvements related to Unicode and external formats:
384 ** the Unicode character database has been upgraded to the
385 Unicode 5.2 standard, giving names and properties to a number of new
386 characters, and providing a few extra characters with case
388 ** improvement: restarts for providing replacement input/output on coding
389 errors for fd-stream external formats.
390 ** improvement: where :<encoding> is a keyword corresponding to an
391 external format the system supports, it is now possible to specify
392 (:<encoding> :replacement <character>) as an external format which will
393 automatically substitute <character> on encoding or decoding errors for
394 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
396 ** improvement: the file streams underlying the standard streams (such as
397 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
398 which uses the replacement mechanism to handle encoding errors,
399 preventing various infinite error chains and unrecoverable I/O
401 ** minor incompatible change: the utf-8 external format now correctly
402 refuses to encode Lisp characters in the surrogate range (char-codes
403 between #xd800 and #xdfff).
404 ** fix a typo preventing conversion of strings into octet vectors
405 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
407 ** fix a bug in the octet multibyte handling of decoding errors and the
408 USE-VALUE restart. (launchpad bug lp#314939)
409 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
410 restart on fd-stream decoding errors.
411 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
412 error is near the end of file.
413 ** fix a double-error case in unibyte octet conversions, when the first
414 use of USE-VALUE is ignored.
415 ** fix bugs in handling of undefined code points in unibyte encodings.
416 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
417 streams after an UNREAD-CHAR.
418 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
419 object is allocated in a boxed region of dynamic space.
420 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
421 fork with multiple Lisp threads running is made, instead of going
422 ahead with unpredictable consequences. (reported by Leslie Polzer)
423 * bug fix: uses of slot accessors on specialized method parameters within
424 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
425 error while finalizing the class. This fix may cause classes with slot
426 accessors to be finalized later than previously. (reported by Lars Rune
427 Nøstdal; launchpad bug lp#473699)
428 * bug fix: restore buildability on the MIPS platform. (regression from
429 1.0.30.38, reported by Samium Gromoff)
430 * bug fix: inspecting closures is less likely to fail with a type error.
431 * bug fix: no timer starvation when setting the system clock back.
432 (launchpad bug lp#460283)
433 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
434 standard pprint dispatch table as specified by CLHS.
435 * bug fix: give CLISP a hint about a type declaration to enable it to build
436 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
438 * bug fix: correctly dump literal objects in defaulting forms of arglists.
439 (reported by Attila Lendvai; launchpad bug lp#310132)
440 * bug fix: distinguish in type specifiers between arrays that might be
441 complex and arrays that are definitely complex. (launchpad bug lp#309129)
442 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
443 type. (reported by Levente Mészáros; launchpad bug lp#485972)
444 * bug fix: setting the value of a symbol-macro within a method in the
445 presence of type declarations works properly again. (reported by Iban
446 Hatchondo; launchpad bug lp#485019)
448 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
449 * optimization: faster FIND and POSITION on strings of unknown element type
450 in high SPEED policies. (thanks to Karol Swietlicki)
451 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
453 * improvement: better error signalling for bogus parameter specializer names
454 in DEFMETHOD forms (reported by Pluijzer)
455 * bug fix: DELETE-FILE once again works on logical pathnames (regression
457 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
459 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
460 removes previous default initargs (reported by Lars Rune Nøstdal and
462 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
463 lambda-lists. (reported by Peter Seibel)
464 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
465 correctly when starting from an executable core without saved runtime
466 options (reported by Faré Rideau, thanks to Zach Beane)
467 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
468 an optimization note instead. (reported by Martin Cracauer)
469 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
470 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
471 new process group if it doesn't need to share stdin with the sbcl
472 process. (thanks to Leslie Polzer)
473 * bug fix: SATISFIES could be misoptimized to refer to a local function.
474 (reported by Stanislaw Halik)
476 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
477 * improvement: stack allocation is should now be possible in all nested
478 inlining cases: failure to stack allocate when equivalent code is manually
479 open coded is now considered a bug.
480 * improvements related to Unicode:
481 ** the Unicode character database has been upgraded to the
482 Unicode 5.1 standard, giving names and properties to a number of new
483 characters, and providing a few extra characters with case
485 ** the system now recognizes and produces names for Unicode Hangul
487 ** the EBCDIC-US external-format is now supported for octet operations
488 (as well as for stream operations).
489 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
490 be used to output toplevel compile-time effects into a separate .CFASL
492 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
493 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
495 * optimization: TRUNCATE on known single- and double-floats is upto 25%
497 * optimization: division of floating point numbers by constants uses
498 multiplication by reciprocal when an exact reciprocal exists.
499 * optimization: multiplication of single- and double-floats floats by
500 constant two has been optimized.
501 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
502 sufficient type information is available. (thanks to Leslie Polzer)
503 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
504 known structure objects are as efficient as defstruct generated accessors.
505 * optimization: unused vector creation can now be optimized away.
506 * improvement: ASDF systems can now depends on SB-INTROSPECT.
507 * improvement: a STYLE-WARNING is signalled when a generic function
508 clobbers an earlier FTYPE proclamation.
509 * improvement: the compiler is able to track the effective type of
510 generic function across method addition and removal even in the
511 absence of an explicit DEFGENERIC.
512 * improvement: DESCRIBE now reports on symbols naming undefined
513 but assumed or declared function as well.
514 * improvement: recompilation of systems using SB-GROVEL now works
515 (thanks to Leslie Polzer)
516 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
517 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
519 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
520 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
521 well as user defined declaration names.
522 ** VARIABLE-INFORMATION is now aware of alien variables.
523 * improvement: improved address space layout on OpenBSD (thanks to Josh
525 * improvement: pretty-printing of various Lisp forms has been improved
526 (thanks to Tobias Rittweiler)
527 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
528 unused were deleted in safe code. (reported by John Fremlin)
529 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
531 * bug fix: some out-of-line array predicates were missing (reported by
533 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
535 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
536 (thanks to Larry D'Anna)
537 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
538 as well. (reported by Josh Elsasser)
539 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
540 leading to possible attempts to delete the same file twice. See docstring
541 on DELETE-FILE for details. (reported by John Fremlin)
542 * bug fix: DELETE-FILE once again deletes the file named by the pathname
543 designator argument, rather than its truename. (reported by Luis
545 * bug fix: the low-level debugger had 32-bit assumptions and was missing
546 information about some array types. (thanks to Luis Oliveira)
547 * bug fix: moderately complex combinations of inline expansions could
548 be miscompiled if the result was declared to be dynamic extent.
549 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
550 form (+ <variable> <integer>) were miscompiled under certain
552 * bug fix: in some cases no compiler note about failure to stack allocate
553 was emitted, even if the objects were in fact heap allocated.
554 * bug fix: minor violation of "otherwise inaccessible" rule for stack
555 allocation could cause objects users might reasonably expect to
556 be heap allocated to be stack allocated.
557 * bug fix: DESCRIBE signalled an error for generic functions under
558 certain circumstances. (thanks to Leslie Polzer)
559 * bug fix: Fixed spelling of an error message.
561 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
562 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
563 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
564 of SB-THREAD:THREAD-ERROR-THREAD.
565 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
566 * new feature: docstrings for local and anonymous functions are no longer
567 discarded. (thanks to Leslie Polzer)
568 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
569 values in other threads.
570 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
571 about object allocation.
572 * optimization: division of a real float by a complex float is implemented
573 with a specialised code sequence.
574 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
575 keywords is an order of magnitude faster.
576 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
577 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
578 methods, and similarly for non-standard metaclass classes as long as there
579 are no methods additional on MAKE-INSTANCE.
580 * optimization: more efficient type-checks for FIXNUMs when the value
581 is known to be a signed word on x86 and x86-64.
582 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
583 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
585 * optimization: compiler is smarter about delegating argument type checks to
587 * optimization: several character functions are now compiled somewhat more
588 efficiently. (reported by Lynn Quam)
589 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
590 * improvement: less unsafe constant folding in floating point arithmetic,
591 especially for mixed complex/real -float operations.
592 * optimization: constant double and single floats are stored in native
593 unboxed format on x86[-64].
594 * optimization: smarter code for arithmetic operations with constant floats,
595 complex floats, or integers on x86[-64].
596 * optimization: smarter code for conjugate/multiplication of float complexes
597 and abs/negate of floats on x86-64.
598 * optimization: more efficient complex float and real float operations on
600 * improvement: complex float division is slightly more stable.
601 * improvement: DESCRIBE output has been reworked to be easier to read and
602 contains more pertinent information.
603 * improvement: failure to provide requested stack allocation compiler notes
604 provided in all cases (requested stack allocation not happening without a
605 note being issued is now considered a bug.)
606 * bug fix: SB-POSIX exports the documented types and functions
607 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
608 types. (reported by "abhi")
609 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
610 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
611 (thanks to Paul Khuong)
612 * bug fix: looping around HANDLER-CASE could silently consume stack space
613 on each iteration. (reported by "foobar")
614 * bug fix: better error signalling when calls to functions seeking elements
615 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
616 (reported by Tobias Rittweiler)
617 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
618 directory components now works as it used to. (various prolems reported by
619 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
620 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
621 (reported by Elliot Slaughter, thanks to Stas Boukarev)
622 * bug fix: bogus undefined variable warnings from fopcompiled references to
623 global variables. (thanks to Lars Rune Nøstdal)
624 * bug fix: foreign function names should now appear in backtraces on
625 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
626 * bug fix: SETF compiler macro documentation strings are not discarded
628 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
629 (thanks to Alex Plotnick)
630 * bug fix: SLEEP accepts large integer arguments, truncating them to
631 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
632 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
633 * bug fix: compiler notes for expensive slot type checks could be emitted
634 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
636 changes in sbcl-1.0.29 relative to 1.0.28:
637 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
638 https://bugs.launchpad.net/sbcl
639 Bugs can be reported directly there, or by sending email to
640 sbcl-bugs@lists.sourceforge.net
641 (no subscription required.)
642 * minor incompatible change: under weak type checking policy integer
643 types are weakened less aggressively.
644 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
645 allowed to return, which causes SBCL to quit with exit status 0. Previously
646 if the function returned with a small integer return value, that value
647 was accidentally reused as the exit status.
648 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
649 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
650 :HASH-FUNCTION argument. Refer to user manual for details.
651 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
653 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
654 microseconds since the Unix epoch on all platforms.
655 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
656 allows the compiler to safely elide boundedness checks for special
658 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
659 the symbol, prohibits both lexical and dynamic binding. This is mainly an
660 efficiency measure for threaded platforms, but also valueable in
662 * new feature: UNC pathnames are now understood by the system on Windows.
663 * optimization: the compiler uses a specialized version of FILL when the
664 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
666 * optimization: accesses to potentially non-simple arrays where element type
667 is known are 50% faster.
668 * optimization: compiler now generates faster array typechecking code.
669 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
671 * optimization: multidimensional array accesses in the absence of type
672 information regarding array rank are approximately 10% faster due to
673 open coding of ARRAY-RANK.
674 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
675 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
677 * optimization: result of call to VECTOR can now be stack allocated.
678 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
679 as long as the resulting array is one-dimensional and has a known
680 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
681 length of the list matches the known length of the vector does not
682 allocate the list as an intermediate step. Ditto for VECTOR and simple
684 * optimization: MAKE-ARRAY can now stack allocate in the presence of
685 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
686 known element type, and is known to be simple and one dimensional.
687 * improvement: SBCL now emits a compiler note where stack allocation was
688 requested but could not be provided (not in all cases, unfortunately)
689 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
690 * improvement: pretty-printing loop has been implemented properly. (thanks
691 to Tobias Rittweiler)
692 * documentation: CLOS slot typechecing policy has been documented.
693 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
694 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
695 pointer, leading to memory faults. (thanks to Bart Botta)
696 * bug fix: better floating point exception handling on x86/OpenBSD.
697 (thanks to Josh Elsasser)
698 * bug fix: exit status from QUIT when called under --script was lost
699 (reported by Hubert Kauker)
700 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
701 same implementation of FILL to initialize the array, even if a more
702 efficient one was available (reported by Stas Boukarev, thanks to
704 * bug fix: potential miscompilation of array stack allocation on x86 and
705 x86-64. (reported by Time Tossavainen)
706 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
707 result in their subforms being treated as top level forms. (reported by
709 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
710 than a machine register could leave garbage in the high bits of the
711 result register (bug 316325).
712 * bug fix: disable address space randomization Linux/x86-64 as well,
713 not just x86-64. (reported by Ken Olum)
714 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
715 generate incorrect code.
716 * bug fix: #201; type inference for CONS and ARRAY types could derive
717 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
718 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
719 could not be assigned to or bound with PROGV. (reported by Lorenz
721 * bug fix: the value of CL:- in the inspector was the previous expression
722 evaluated rather than the expression being evaluated.
723 * bug fix: constants can no longer be locally declared special.
724 * bug fix: signals delivered to threads started from foreign land (read:
725 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
726 thread by blocking all signals and resignalling.
727 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
728 from :INITFORM, if any.
730 changes in sbcl-1.0.28 relative to 1.0.27:
731 * a number of bugs in cross-compilation have been fixed, with the ultimate
732 result that building under (at least) clisp should be much more reliable.
733 * minor incompatible changes: echo-streams now propagate unread-char to the
734 underlying input stream, and no longer permit unreading more than one
736 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
737 frames, allowing for instance more reliable backtraces.
738 * improvement: the debugger REPL can now reference lexical variables
739 by name directly for code compiled with (DEBUG 3).
740 * improvement: errors from malformed declarations now have better source
741 paths associated with them. (thanks to Tobias Rittweiler)
742 * optimization: faster local calls on x86/x86-64
743 * bug fix: some error messages for out-of-bound array indexes confused the
744 index and the bound. (thanks to Stas Boukarev)
745 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
747 * bug fix: running regressions tests in shells without OSTYPE set now works.
748 (reported by Harald Hanche-Olsen)
749 * bug fix: more robust static space exhaustion signalling from
750 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
751 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
752 docstring away instead of storing it under names such as (LAMBDA (X)).
753 (reported by Leslie Polzer)
754 * bug fix: timers could go off in the wrong order, be delayed indefinitely
755 (thanks to Ole Arndt for the patch)
756 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
757 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
758 potentially-invalid effective methods in its cache.
759 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
760 instances as well (thanks to Paul Khuong)
761 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
762 SB-POSIX:WAITPID and their C equivalents.
763 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
765 changes in sbcl-1.0.27 relative to 1.0.26:
766 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
767 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
768 * improvement: the system either recovers from stack exhaustion or dies
769 properly as opposed to leaving the user uncertain of whether the handler
770 trampled on some random memory next to the stack or having to rely on
771 --lose-on-corruption (which is still a good idea to use in production
772 because stack exhaustion can happen in signal handlers which will likely
774 * bug fix: fix gc related interrupt handling bug on ppc (regression from
775 1.0.25.37, reported by Harald Hanche-Olsen)
776 * bug fix: work around signal delivery bug in darwin (regression from
777 1.0.25.44, reported by Sidney Markowitz)
778 * bug fix: fix ERROR leaking memory (reported by David Thompson)
780 changes in sbcl-1.0.26 relative to 1.0.25:
781 * incompatible change: an interruption (be it a function passed to
782 INTERRUPT-THREAD or a timer function) runs in an environment where
783 interrupts can be enabled. The interruption can use
784 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
785 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
786 potentially running out of stack. Keep in mind that in the absence
787 of WITHOUT-INTERRUPTS some potentially blocking operation such as
788 acquiring a lock can enable interrupts.
789 * incompatible change: GC-OFF and GC-ON are removed, as they were
790 always unsafe. Use WITHOUT-GCING instead.
791 * new feature: runtime option --disable-ldb
792 * new feature: runtime option --lose-on-corruption to die at the
793 slightest hint of possibly non-recoverable errors: running out of
794 memory, stack, alien stack, binding stack, encountering a memory
795 fault, etc. In the absence of --lose-on-corruption a warning is
797 * enhancement: detect binding stack exhaustion
798 * enhancement: detect alien stack exhaustion on x86/x86-64
799 * improvement: generally more stable and reliable interrupt handling
800 * improvement: there is a per thread interruption queue,
801 interruptions are executed in order of arrival
802 * improvement: a repeating timer reschedules itself when the it has
803 finished, but expiration times are spaced equally. If an
804 expiration time is in the past it will trigger after a short grace
805 period that may give a chance to other things to run.
806 * optimization: slightly faster gc on multithreaded builds
807 * optimization: faster WITHOUT-GCING
808 * bug fix: when JOIN-THREAD signals an error, do it when not holding
809 important locks so that the debugger/handler doesn't produce
810 recursive errors or deadlock.
811 * bug fix: real-time signals are not used anymore, so no more
812 hanging when the system wide real-time signal queue gets full.
813 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
815 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
816 * bug fix: fix random memory faults related to interrupts on alpha
817 * bug fix: fix random memory faults related to interrupts on sparc
818 * bug fix: fix deadlocks related to starting threads
819 * bug fix: fix deadlines on locks on futex platforms
820 * bug fix: restore errno in signal handlers
821 * bug fix: fix deadlocks related to hash tables
822 * bug fix: fix deadlocks in pcl
824 changes in sbcl-1.0.25 relative to 1.0.24:
825 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
826 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
827 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
828 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
829 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
830 better name and does not return values so stale on multiprocessor systems.
831 Also, HOLDING-MUTEX-P was added for about the only sane usage of
833 * improvement: unithread builds keep track of MUTEX-VALUE.
834 * improvement: reading from a TWO-WAY-STREAM does not touch the output
835 stream anymore making it thread safe to have a concurrent reader and
836 a writer, for instance, in a pipe.
837 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
838 arguments, making compiler-macros for SETF-functions able to inspect
839 their constant arguments.
840 * improvement: COMPILE-FILE reports times with millisecond accuracy
841 (thanks to Luis Oliveira)
842 * optimization: CHAR-CODE type derivation has been improved, making
843 TYPEP elimination on subtypes of CHARACTER work better. (reported
844 by Tobias Rittweiler, patch by Paul Khuong)
845 * bug fix: setting alien structure fields of type struct by value now
846 computes the right offset for the memory copy.
847 * bug fix: compilation problem involving inlined calls to aliens with
848 result type VOID. (reported by Ken Olum)
849 * bug fix: #235a; sequential inline expasion in different policies no
850 longer reuses the functional from the previous expansion site.
851 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
852 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
853 * bug fix: named ENUMs in multiply-referenced alien record types no longer
854 cause an implied type redefinition. Regression from 1.0.21.29.
855 * bug fix: sign-extension of small signed return values now works with C
856 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
857 * improvements to the Windows port:
858 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
859 Westfold, thanks to Rudi Schlatte)
861 changes in sbcl-1.0.24 relative to 1.0.23:
862 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
863 vector of a multidimensional SIMPLE-ARRAY.
864 * new feature: the system now signals a continuable error if standard
865 readtable modification is attempted. (thanks to Tobias Rittweiler)
866 * new feature: DIRECTORY has been extended with a non-standard keyword
867 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
868 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
869 has been robustified and documented better. (thanks to Robert Goldman)
870 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
871 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
872 * tradeoff: constant FORMAT control strings are now compiled unless
873 SPACE > SPEED (previously only when SPEED > SPACE.)
874 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
876 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
878 * bug fix: lexical type declarations are now correctly reported by
879 SB-CLTL2. (reported by Larry D'Anna)
880 * bug fix: STRING-TO-OCTETS did not handle :START properly when
881 using UTF-8 as external format. (thanks to Luis Oliveira)
882 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
883 are signalled correctly. (thanks to Stas Boukarev)
884 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
885 designator. (thanks to Tobias Rittweiler)
886 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
887 designator, and returns T instead of the function. (thanks to
889 * bug fix: direct superclasses of STANDARD-CLASS and
890 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
891 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
892 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
893 when no class with the named slot yet exists no longer causes a
894 compile-time style-warning.
895 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
896 in safe code. (reported by Didier Verna)
897 * bug fix: #430; nested structure constructors can stack allocate.
898 * bug fix: on some 64-bit platforms dynamic space size was truncated
899 to #xffff0000 bytes. (reported by Benjamin Lambert)
900 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
901 REPL unusable. (reported by Daniel Herring)
902 * bug fix: return values of READ-SEQUENCE did not take :START into
903 account on file streams, regressions since 1.0.12.22. (reported by
904 Thomas Russ, patch by Paul Khuong)
905 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
906 method specializer used to confuse permuation vector optimization.
907 * bug fix: system inserted bogus implicit type declarations for local
908 special variables in DEFMETHOD bodies.
909 * bug fix: #354; duplicated frames in backtraces due to
910 non-tail-call-optimized XEPs to functions with return type NIL
912 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
913 initializes structure object slots according to DEFSTRUCT initforms,
914 and DEFSTRUCT forms :INCLUDEind structure classes defined using
915 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
916 (reported by Bruno Haible and Stephen Wilson)
917 * bug fix: #395; fill-pointer output streams used now support
918 element-type BASE-CHAR as well.
919 * bug fix: compiler error when attempting to derive return value of
920 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
922 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
924 * bug fix: Mac OS X binaries should now be portable between Leopard
927 changes in sbcl-1.0.23 relative to 1.0.22:
928 * enhancement: when disassembling method functions, disassembly
929 for the associated fast function is also produced.
930 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
932 * optimization: printing with *PRINT-PRETTY* true is now more
933 efficient as long as the object being printed doesn't require
934 special handling by the pretty printer.
935 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
936 now interact correctly with type declarations.
937 * partial bug fix: PCL detects infinite recursion during wrapper
938 validation. (thanks to Attila Lendvai)
939 * bug fix: #426; nested function calls are inlined properly.
940 Previously if FOO was an inline function, in calls of the form
941 (FOO (FOO ...)) the outer call was not inlined.
942 * bug fix: long long arguments passed in registers to alien
943 functions on PowerPC Linux and NetBSD are now handled correctly
944 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
946 changes in sbcl-1.0.22 relative to 1.0.21:
947 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
948 for the shared object in the current directory, but passes the native
949 namestring of the designated pathname to the operation system's shared
950 object loading function as-it.
951 * minor incompatible change: --disable-debugger toplevel option now takes
952 effect before processing of initialization files and --eval or --load
954 * new feature: new commandline argument: --script, which supports
955 shebang lines. See documentation for details. (based on work by
957 * new feature: SAVE-LISP-AND-DIE can save current values of
958 --dynamic-space-size and --control-stack-size in the executable core,
959 causing it to skip normal runtime option processing. See documentation
960 for details. (thanks to Zach Beane)
961 * enhancement: inoccous calls to EVAL or generic functions dispatching
962 on subclasses of eg. STREAM no longer cause compiler notes to appear.
963 * enhancement: the system no longer resignals errors from --load and
964 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
965 associated with the original error to be lost. (thanks to Ariel
967 * enhancement: :DONT-SAVE keyword argument has been added to
968 LOAD-SHARED-OBJECT for controlling interaction with
969 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
970 the effects of an earlier LOAD-SHARED-OBJECT call.
971 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
972 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
973 provided. (reported by Cedric St-Jean)
974 * bug fix: circularity handling in the reader did not treat raw
975 structure slots correctly. (reported by Cedric St-Jean)
976 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
977 file descriptors when there were none.
978 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
979 was broken. (reporteed by Willem Broekema)
980 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
981 pathnames without a directory.
982 * bug fix: COMPILE-FILE did not warn about undefined variable
983 references at toplevel, and LOAD of the resulting fasl did
985 * bug fix: functions with non-required arguments used to end up with
986 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
987 * bug fix: redefining a function with non-required arguments didn't
988 update the system's knowledge about its call signature properly.
989 * bug fix: fixed #431; incompatible alien record type redefinitions
990 are detected and handled. (reported by Neil Haven)
991 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
992 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
994 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
995 after alien stack frames.
996 * bug fix: strings passed to mk{s,d}temp lacked null termination
998 changes in sbcl-1.0.21 relative to 1.0.20:
999 * new feature: the compiler is able to track the effective type of a
1000 generic function across method addition and removal.
1001 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1002 appropriately typed structure slots without locking.
1003 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1004 information like those gathered by TIME using a programming-friendly
1006 * new feature: TIME reports time taken even if the form performs a
1007 non-local transfer of control.
1008 * enhancement: reduced conservativism on GENCGC platforms: on
1009 average 45% less pages pinned (measured from SBCL self build).
1010 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1011 mutate constant symbols or violate declaimed type of the symbol.
1012 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1013 sleeping on the semaphore in heavily contested semaphores.
1014 * bug fix: semaphores and condition variables were not interrupt
1016 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1017 owned by other threads anymore.
1018 * bug fix: FIND on lists called KEY outside the specified
1019 subsequence. (reported by budden)
1020 * bug fix: LOG doesn't use single-float intermediate results when
1021 given mixed integer and double-float arguments, leading to better
1022 precision. (reported by Bob Felts)
1023 * bug fix: LOG with base zero returned values of inconsistent type.
1025 changes in sbcl-1.0.20 relative to 1.0.19:
1026 * minor incompatible change: OPTIMIZE qualities
1027 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1028 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1029 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1030 * documentation: some slot access efficiency guidelines have been
1031 added to the user manual.
1032 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1033 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1034 as ASSOC and MEMEBER.
1035 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1036 to more efficient EQ-comparison versions more often.
1037 * optimization: enhanced derivation of DOLIST iteration variable type
1039 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1041 * optimization: runtime lookup of function definitions can be
1042 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1043 * optimization: compiler is able to derive the return type of
1044 (AREF (THE STRING X) Y) as being CHARACTER.
1045 * optimization: CLRHASH on empty hash-tables no longer does pointless
1046 work. (thanks to Alec Berryman)
1047 * optimization: REPLACE deftransforms don't punt when :START1 or
1049 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1050 no longer emits a code deletion note. (reported by Andrew
1052 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1053 functions with an odd number of &OPTIONAL arguments, a &REST
1054 argument, and one or more &KEY arguments at the call site.
1055 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1056 arguments appeared at call sites as well.
1057 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1058 READ-LINE &co can no longer read from them afterwards. (reported
1060 * bug fix: fixed #427: unused local aliens no longer cause compiler
1061 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1063 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1064 alien-stack leakage. (reported by Andy Hefner)
1065 * bug fix: PROGV signals an error when an attempt to violate declared
1066 type of a variable or bind a constant is made.
1067 * bug fix: SET signals an error when an attempt to violate declared
1068 type of a variable is made.
1069 * bug fix: restart computation during the execution of a restart
1070 test function no longer causes infinite recursion. (reported by
1072 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1073 signals an error. (thanks to Pierre Mai)
1074 * bug fix: EXPORT left symbol unexported in conflict situations.
1075 (thanks to Michael Weber)
1076 * bug fix: correctly handle name conflicts involving CL:NIL.
1077 (thanks to Michael Weber)
1078 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1079 conflicts arising from USEing package with conflicting symbols
1080 correctly. (thanks to Michael Weber)
1082 changes in sbcl-1.0.19 relative to 1.0.18:
1083 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1084 warnings that go otherwise unhandled will be muffled if they are
1085 of the type that's the value of this variable.
1086 * optimization: stack allocation is slightly more efficient on x86
1088 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1089 where a raw slot always is initialized using the initform whose
1090 type is not know sufficiently well a compile-time are now compiled
1091 correctly. (reported by John Morrison)
1092 * bug fix: compiler no longer makes erronous assumptions in the
1093 presence of non-foldable SATISFIES types.
1094 * bug fix: stack analysis missed cleanups of dynamic-extent
1095 arguments in non-let-converted calls to local functions.
1096 * improvements to the Windows port:
1097 ** adjusted address spaces for building on both Win32 and
1098 Win64. (thanks for John Connors)
1099 * fixed some bugs revealed by Paul Dietz' test suite:
1100 ** interval arithmetic during type derivation used inexact integer
1101 to single-float coercions.
1102 ** arithmetic operations involving large integers and single
1103 floats give the same results in compiled and interpreted code.
1104 ** deriving the result type of COERCE no longer signals an error
1105 if the derived type of the second argument is a MEMBER type
1106 containing invalid type specifiers.
1107 ** ADJOIN with constant NIL as second argument works correctly.
1108 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1110 changes in sbcl-1.0.18 relative to 1.0.17:
1111 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1112 profiles only the current thread.
1113 * minor incompatible change: changes to SYMBOL-VALUE of constants
1114 defined with DEFCONSTANT now signal an error.
1115 * enhancement: SB-SPROF now has support for wallclock profiling,
1116 and is also able to profile specific threads. REPORT output
1117 has also additional sorting options.
1118 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1120 * optimization: structure allocation has been improved
1121 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1122 ** out of line constructors are ~10% faster.
1123 ** inline constructors are ~15% faster.
1124 ** inline constructors are capable of dynamic extent allocation
1125 (generally on x86 and x86-64, in some cases on other platforms
1127 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1129 * optimization: file compiler is now able to coalesce non-circular
1130 lists, non-base strings, and bit-vectors. Additionally, constants
1131 are never referenced through SYMBOL-VALUE at runtime.
1132 * optimization: code defining methods on PRINT-OBJECT (and other
1133 generic functions in the COMMON-LISP package) now loads faster.
1134 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1136 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1137 fasl is now deleted. (reported by Attila Lendvai)
1138 * bug fix: READ-LINE always returned NIL for the last line in files.
1139 (reported by Yoshinori Tahara)
1140 * bug fix: more accurate disassembly annotations of foreign function
1141 calls. (thanks to Andy Hefner)
1142 * bug fix: trimming non-simple strings and non-string string
1143 designators when the there is nothing to trim works properly.
1144 (thanks to James Knight)
1145 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1146 (thanks to Travis Cross)
1147 * fixed some bugs revealed by Paul Dietz' test suite:
1148 ** NIL is a valid function name (regression at 1.0.13.38)
1149 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1150 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1151 fill pointers properly (regression at 1.0.12.23)
1152 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1153 displacement indices properly (regression at 1.0.12.23)
1155 changes in sbcl-1.0.17 relative to 1.0.16:
1156 * temporary regression: user code can no longer allocate closure
1157 variable storage on stack, due to bug 419 without explicitly
1158 requesting it. Please consult sbcl-devel for advice if you need to
1159 use this feature in the meanwhile.
1160 * new feature: runtime argument --control-stack-size can be used to
1161 adjust thread default control stack size.
1162 * enhancement: improved TIME output
1163 ** all times are reported using the measured accuracy (milliseconds
1164 for real and GC times, microseconds for everything else.)
1165 ** processor cycle counts on x86 and x86-64.
1166 ** interpreted forms are counted for both evaluator modes.
1167 ** number of lambdas converted by the compiler is reported.
1168 ** CPU percentage report (computed from real and total run time.)
1169 ** more comprehensive run time reporting, using a condenced format
1170 ** interperted form, lambda, and page fault counts are omitted
1172 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1174 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1175 * optimization: two argument forms of LAST are upto ~10% faster
1176 in normal SPEED policies.
1177 * optimization: NCONC no longer needs to heap cons its &REST list
1178 in normal SPEED policies.
1179 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1180 to Sidney Markowitz)
1181 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1182 regression since 1.0.9.1. (thanks to Eric Marsden)
1183 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1184 since 1.0.15.36. (thanks to Paul Khuong)
1185 * bug fix: LAST when always returned the whole list when given a bignum
1186 as the second argument.
1187 * bug fix: dynamic extent allocation of nested lists and vectors
1188 could leak to otherwise accessible parts.
1189 * bug fix: invalid optimization of heap-allocated alien variable
1191 * bug fix: fasl header checking is less vulnerable to different
1192 platform word lengths.
1193 * bug fix: more correct assembler syntax for GNU binutils
1194 2.18.50.0.4 support. (thanks to Marijn Schouten)
1195 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1197 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1198 declarations) successfully. (reported by Attila Lendvai)
1200 changes in sbcl-1.0.16 relative to 1.0.15:
1201 * minor incompatible change: revert the changes to sb-posix's error
1202 signaling added in 1.0.14.
1203 * minor incompatible change: change PROBE-FILE back to returning
1204 NIL whenever we can't get a truename, as was the case before 1.0.14.
1205 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1206 inherits from ERROR instead of just CONDITION.
1207 * new feature: SB-INTROSPECT can provide source locations for instances
1208 as well. (thanks to Tobias Rittweiler)
1209 * optimization: binding special variables now generates smaller code
1210 on threaded platforms.
1211 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1212 and cases where no :TEST is given but the compiler can infer that
1213 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1214 * optimization: better LOGNOT on fixnums.
1215 * optimization: modular arithmetic for a particular requested width
1216 is implemented using a tagged representation unless a better
1217 representation is available.
1218 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1219 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1220 for wellformedness and returns a specialized vector. (reported by
1221 Francois-Rene Rideau)
1222 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1223 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1224 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1225 unscheduling timer at the same time as another timer fires.
1226 * bug fix: don't reschedule timers for dead threads.
1227 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1228 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1229 bogus errors if select() was interrupted.
1230 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1232 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1233 * enhancement: cleaner backtraces for interactive interrupts, as
1234 well as other cases where the interesting frames used to be
1235 obscured by interrupt handling frames.
1236 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1237 now supported, and tracing a whole package using (TRACE "FOO") now
1238 traces SETF-functions as well.
1239 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1240 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1241 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1242 * unreadably printed representation of hash-tables now includes
1244 * bug fix: partially fixed #188: type propagation from assignments
1245 is now more efficient.
1246 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1247 'DOUBLE-FLOAT) are not flushable.
1248 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1249 full address of the object, and none of the tag bits.
1250 * bug fix: readably printing hash-tables now respects other printer
1251 control variables. (reported by Cedric St-Jean)
1252 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1253 keyword with MAKE-HASH-TABLE.
1254 * bug fix: export SB-POSIX:MKSTEMP.
1255 * bug fix: SORT was not interrupt safe.
1256 * bug fix: XREF accounts for the last node of each basic-block as
1258 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1259 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1260 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1261 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1262 create obsolete instances in the case of redefinition or
1263 obsoletion of a superclass. (thanks to Andy Hefner)
1264 * bug fix: Support for the Alpha architecture has been revived; it had
1265 suffered somewhat from lack of maintenance since sbcl-1.0.
1266 * improvements to the Windows port:
1267 ** The system detects the codepage to use at startup, instead of
1268 using the value from the saved core. (thanks to Kei Suzuki)
1270 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1271 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1272 (see documentation for details.)
1273 * revived support for OpenBSD (contributed by Josh Elsasser)
1274 * partially fixed bug #108: ROOM no longer suffers from occasional
1275 (AVER (SAP= CURRENT END)) failures.
1276 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1277 bodies no longer cause a WARNING to be signalled. (reported by
1279 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1280 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1281 the bug in TRUNCATE.) (reported by Michael Weber)
1282 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1283 no samples. (reported by Andy Hefner)
1284 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1285 no longer appear as (NIL ...) frames in backtraces.
1286 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1287 is now actually exported from SB-EXT as documented. (reported by
1289 * bug fix: sb-aclrepl now correctly understands how to inspect
1290 single-floats on 64-bit platforms where single-floats are not boxed.
1291 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1292 yet been finalized. (reported by Levente Meszaros)
1293 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1294 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1295 SBCL-specific optimize qualities.
1297 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1298 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1299 an executable in the search path, and does so in the child
1300 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1301 been removed; it can be found in the CVS history, for somebody who
1302 needs that search behavior (see the manual).
1303 * minor incompatible change: compiler policy re. weakening type
1304 checks has changed: now type checks are weakened only if SAFETY < 2
1306 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1307 unparsing of directory pathnames as files. Analogously,
1308 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1309 filename to parse into a directory pathname.
1310 * enhancement: implicit generic function creation now signals a
1311 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1312 users can bind handlers for and muffle around calls to LOAD.
1313 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1314 to be used (using the default stream external format), and allows
1315 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1316 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1317 strings and vectors whose element-type or simplicity is not fully
1318 known at compile-time.
1319 * optimization: STRING-TRIM and related functions no longer allocate
1320 a new string when no trimming needs to be performed. These functions
1321 are also faster than before when the input string has been declared
1323 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1324 * optimization: READ-LINE is significantly faster for files containing
1326 * optimization: non-open coded uses of character comparison operators
1327 (e.g. char=) no longer cons when called with more than one parameter
1328 on platforms supporting dynamic-extent allocation.
1329 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1330 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1331 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1333 * bug fix: some sequence functions elided bounds checking when
1335 * bug fix: too liberal weakening of union-type checks when SPEED >
1337 * bug fix: more bogus fixnum declarations in ROOM implementation
1340 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1341 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1342 :SYNCHRONIZED argument, which makes the hash-table safe for
1343 concurrent accesses (but not iteration.) See also:
1344 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1345 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1346 * optimization: CONCATENATE on strings is an order of magnitude faster
1347 in code compiled with (> SPEED SPACE).
1348 * optimization: SUBSEQ is ~50% faster on lists.
1349 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1350 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1351 END is smaller then START.
1352 * bug fix: SB-PROFILE will no longer report extra consing for nested
1353 calls to profiled functions.
1354 * bug fix: ROOM implementation had bogus fixnum declarations which
1355 could cause type-errors when calling ROOM on large images.
1356 * bug fix: if file compilation is aborted, the partial fasl is now
1357 deleted, and COMPILE-FILE returns NIL as the primary value.
1358 * bug fix: number of thread safety issues relating to SBCL's internal
1359 hash-table usage have been fixed.
1360 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1361 be returned from its body when the values were being returned
1362 using unknown-values return convection and the W-P-O was wrapped
1363 inside an UNWIND-PROTECT.
1364 * bug fix: sb-posix should now compile again under Windows, enabling
1365 slime to work again.
1367 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1368 * incompatible change: hash-table accessor functions are no longer
1369 automatically protected by locks. Concurrent accesses on the same hash-table
1370 from multiple threads can give inconsistent results or even corrupt the
1371 hash-table completely. Multi-threaded applications should do their own
1372 locking at the correct granularity. In the current implementation it is
1373 still safe to have multiple readers access the same table, but it's not
1374 guaranteed that this property will be maintained in future releases.
1375 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1376 and will signal an error at runtime.
1377 * enhancement: SB-THREAD package now exports a semaphore interface.
1378 * enhancement: CONS can now stack-allocate on x86 and
1379 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1381 * enhancement: nested lists can now be stack allocated on
1382 platforms providing stack allocation support.
1383 * enhancement: dynamic-extent support has been extended to support
1384 cases where there are multiple possible sources for the stack
1386 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1387 if the mutex is uncontested on Linux.
1388 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1389 as specified by the CLHS. (thanks to Tobias Rittweiler)
1390 * bug fix: NaN comparison now works on x86-64.
1391 * bug fix: CLOSE :ABORT T on a stream with pending output now
1393 * bug fix: instances of non-standard metaclasses using standard
1394 instance structure protocol sometimes missed the slot type checks
1396 * bug fix: known functions can be inlined in high-debug code.
1398 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1399 * minor incompatible change: the MSI installer on Windows no longer
1400 associates .lisp and .fasl files with the installed SBCL.
1401 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1402 on Windows. (thanks to Luis Oliviera)
1403 * new feature: SB-CLTL2 contrib module now implements
1404 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1405 * optimization: scavenging weak pointers is now more efficient,
1406 requiring O(1) instead of O(N) per weak pointer to identify
1407 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1408 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1409 method bodies using constant slot-names when the first argument is
1410 a specializer parameter for the method.
1411 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1412 names, when the class of the instance is a direct instance
1413 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1414 as slow as the constant slot-name case.)
1415 * optimization: member type construction is now O(N) instead
1417 * optimization: UNION and NUNION are now O(N+M) for large
1418 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1420 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1421 now more readable in environments like Slime which display it.
1422 (thanks to Tobias C. Rittweiler)
1423 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1424 was able to infer the correct argument type for the object on which
1425 the CAS operation was being performed.
1426 * bug fix: copy propagation interfered with parallel assignment
1427 semantics in local calls. (reported by Paul Khuong)
1428 * bug fix: the signed modular fixnum shift compiled to wrong code on
1429 x86 and x86-64. (spotted by a slight modification to some of
1432 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1433 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1434 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1435 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1437 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1438 and generic function now print the object identity for anonymous
1439 instances. (thanks to Attila Lendvai)
1440 * enhancement: as an extension to MOP, SBCL now supports SETF of
1441 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1442 (thanks to Attila Lendvai)
1443 * enhancement: sb-cover has an alternate annotation mode which puts
1444 the form annotations at the car of the form, instead of annotating
1445 it completely. The benefit of this mode is that it shows better
1446 which forms were instrumented by the compiler.
1447 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1448 by printer control variables. (reported by Dan Corkill)
1449 * bug fix: system leaked memory when delayed output was performed by
1450 the OS in smaller chunks then expected. (thanks to David Smith)
1451 * bug fix: system leaked memory when file streams were not closed
1453 * bug fix: large objects written to slow streams that were modified
1454 after the write could end up with the modified state written to
1455 the underlying file descriptor.
1456 * bug fix: multiple threads operating in parallel on the same stream
1457 could cause buffer-overflows.
1458 * bug fix: source location information is stored correctly
1459 (broken since 1.0.6). This bug would generally show up as the
1460 Slime debugger highlighting the wrong form when the sldb-show-source
1462 * bug fix: Branch forms are again annotated as branches in the sb-cover
1464 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1465 on x86-64. (reported by Gregory Vanuxem)
1466 * bug fix: EQUALP could return wrong results for structures with raw
1467 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1468 word). (reported by Vjacheslav Fyodorov)
1469 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1472 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1473 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1474 atomic compare-and-swap operations on threaded platforms.
1475 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1476 allows assigning a global minimum value to optimization qualities
1477 (overriding proclamations and declarations).
1478 * enhancement: closed over variables can be stack-allocated on x86
1480 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1482 * optimization: slot definition lookup is now O(1). This speeds up
1483 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1484 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1485 * optimization: ASSOC and MEMBER can now be open-coded for all
1486 combinations of keyword arguments when second argument is constant
1487 and SPEED >= SPACE. In other cases a specialized version is
1489 * bug fix: using obsoleted structure instances with TYPEP and
1490 generic functions now signals a sensible error.
1491 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1492 (reported by Kristoffer Kvello)
1493 * bug fix: backtrace construction is now more careful when making
1494 lisp-objects from pointers on the stack, to avoid creating bogus
1495 objects that can be seen by the GC.
1496 * bug fix: defaulting of values in contexts expecting more than 7
1497 variables now works on x86-64. (reported by Christopher Laux)
1498 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1500 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1501 as the property-list of a symbol.
1502 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1503 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1504 situations requested, are once again file-compileable. (reported
1507 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1508 * MOP improvement: support for user-defined subclasses of
1509 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1510 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1511 the expansion of DEFMETHOD, is responsible for generating a form
1512 which creates a list of specializers when evaluated. Additional
1513 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1514 debugging and introspective support.
1515 * minor incompatible change: the (unsupported) spinlock interface
1516 has changed: free spinlock now has the value NIL, and a held spinlock
1517 has the owning thread as its value.
1518 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1519 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1521 * enhancement: name of a socket-stream is now "a socket" instead of
1522 "a constant string".
1523 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1524 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1525 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1526 for generic functions. (Thanks to Tobias C. Rittweiler)
1527 * optimization: bignum printing speed has been improved by 20-40%
1528 (depending on the bignum size.)
1529 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1531 * bug fix: the cache used by the CLOS to store precomputed effective
1532 methods, slot offsets, and constant return values is now thread and
1534 * bug fix: generic function dispatch function updating is now thread
1535 and interrupt safe (in the sense that the known issues have been
1537 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1538 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1539 * bug fix: asdf systems with dependencies to the SB-POSIX or
1540 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1541 * bug fix: interrupt safety of applicable method computation has been
1544 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1545 * new contrib: sb-cover, an experimental code coverage tool, is included
1546 as a contrib module.
1547 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1548 significantly faster.
1549 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1550 produce more efficient code on x86-64 if the compiler can determine
1551 that (+ INDEX <constant>) does not require a bounds check and FOO
1552 has an element type at least 8 bits wide.
1553 * enhancement: a new, experimental synchronous timeout facility is
1554 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1555 * enhancement: when a symbol name conflict error arises, the
1556 conflicting symbols are always printed with a package prefix.
1557 (thanks to Kevin Reid)
1558 * enhancement: stepping is now once again supported on the SPARC and
1559 MIPS platforms. (It is also now more likely to work on CheneyGC
1561 * enhancement: sb-sprof can now also track and report accurate call
1563 * bug fixes: the treatment of non-standard subclasses of
1564 SB-MOP:SPECIALIZER is more correct.
1565 * incompatible change: PURIFY no longer copies the data from the
1566 dynamic space into the static and read-only spaces on platforms
1567 that use the generational garbage collector
1568 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1570 * bug fix: GC race condition occasionally resulting in crashes with
1571 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1573 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1575 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1576 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1577 * bug fix: an asynchronous interrupt could previously leave the
1578 system running with GC inhibited.
1579 * bug fix: a DECLARE form evaluated at top-level now causes an error
1580 rather than silently (or verbosely) returning NIL.
1581 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1582 result in a error being signalled due to source form lookup errors.
1583 (reported by Peter Graves)
1585 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1586 * incompatible change: removed writer methods for host-ent-name,
1587 host-ent-addresses -- changing the values did not update the DNS
1589 * minor incompatible change: changed experimental JOIN-THREAD interface
1590 * documentation: the manual now lists reader and writer methods
1591 in class slot documentation sections. (thanks to Richard M Kreuter)
1592 * documentation: unwinding from asyncronous events has been
1593 documented as unsafe.
1594 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1595 in multithreaded application code.
1596 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1597 platforms. (thanks to James Anderson for the optimization hint)
1598 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1600 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1601 variants no longer cons.
1602 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1603 their NOT- variants no longer cons.
1604 * optimization: EQUAL hash tables no longer use SXHASH for objects
1605 of all data types, but instead use an EQL hash for types for which
1606 EQUAL is the same as EQL.
1607 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1608 are significantly faster.
1609 * optimization: new STRING-OUTPUT-STREAM implementation is much
1610 faster for large outputs and conses 30% less on average.
1611 * enhancement: XREF information is now collected for references made
1612 to global variables using SYMBOL-VALUE and a constant argument.
1613 * enhancement: SIGINT now causes a specific condition
1614 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1615 * bug fix: FILE-POSITION used to signal an error in some cases where
1616 ANSI requires it to return NIL.
1617 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1618 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1619 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1621 * bug fix: bad type declaration in the CLOS implementation has
1622 been fixed. (reported by James Anderson)
1623 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1624 (thanks to Lutz Euler)
1625 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1626 required by the CLHS. (reported by Samium Gromoff)
1627 * bug fix: dead unbound variable references now signal an error.
1628 (reported by Marco Monteiro)
1629 * bug fix: / with an unused value was being deleted in safe code.
1630 (thanks to Marco Monteiro and Kevin Reid)
1631 * bug fix: number of characters that can be written onto a single
1632 line in a file is unlimited.
1633 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1634 been fixed by inhibiting interrupts for when GC is disabled.
1635 * bug fix: some interrupt safety issues with GETHASH, (SETF
1636 GETHASH), CLRHASH and REMHASH have been fixed.
1637 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1638 specifier no longer causes infinite recursion.
1639 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1640 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1641 * bug fix: an &environment argument with the correct variable information
1642 is passed to macros that are expanded during byte compilation.
1643 (reported by Samium Gromoff)
1644 * bug fix: a logic error was causing the hash function for bignums to
1645 have excessive amounts of collisions. (reported by Faré Rideau)
1646 * bug fix: modifying the contents of an array could change the return
1647 value of SXHASH on that array, which is only allowed for strings
1648 and bit vectors. (bug introduced in 0.9.16)
1649 * improvement: the x86-64/darwin port now passes all tests (except
1650 for the debugger tests) but should still be considered
1651 experimental until this is fixed.
1652 * improvement: a style-warning is signaled for CASE (etc) clauses with
1653 duplicate keys. (thanks to Kevin Reid)
1654 * improvement: macos/x86 and macos/x86-64 now use mach exception
1655 handlers for dealing with illegal instructions (for trapping and
1656 error handling) and memory protection violations (for GC).
1658 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1659 * new platform: experimental support for x86-64/darwin (MacOS).
1660 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1661 and getnameinfo sockets functions are used instead of gethostbyaddr
1662 and gethostbyname, on platforms where the newer functions are available.
1663 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1665 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1666 don't print the startup banner, but behave as if --noinform was passed
1667 as a command line argument. (thanks to Kevin Reid)
1668 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1669 * optimization: code using alien values with undeclared types is much faster.
1670 * optimization: the compiler is now able to open code SEARCH in more cases.
1671 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1672 * bug fix: using standardized COMMON-LISP special variables as loop
1673 variables no longer signals bogus package lock violations. (reported
1675 * bug fix: declaring local loop variables to be of a range-limited type
1676 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1677 (reported by Andras Simon)
1678 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1679 bugs remain on x86-64.)
1680 * bug fix: the #= and ## reader macros now interact reasonably with
1681 funcallable instances.
1682 * bug fix: type-checks for function arguments were compiled using the
1683 compiler policy settings of the wrong lexical environment (in 1.0.2
1685 * bug fix: SHADOW accepts characters as string designators, as required
1686 by the spec (thanks to Eric Marsden)
1687 * bug fix: fixed GC safety issues when foreign functions are called with
1688 non-base strings as arguments
1689 * bug fix: more consistent error output for fatal-compiler-warnings, like
1691 * bug fix: functions with proper names were showing up as NIL in
1692 backtraces (reported by Edi Weitz, regression in 1.0.2)
1694 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1695 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1696 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1697 produce more efficient code on the x86 if the compiler can determine
1698 that (+ INDEX <constant>) does not require a bounds check and FOO
1699 has an element type at least 8 bits wide.
1700 * bug fix: references to undefined variables are handled the same way
1701 in toplevel forms as in the normal compiler
1702 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1704 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1705 (thanks to Jon Buller)
1706 * improvement: faster compilation times for complex functions
1707 * improvement: added readlink support to SB-POSIX (thanks to Richard
1710 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1711 * improvement: experimental support for mach exception handling on
1712 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1714 * improvement: support for GBK external format.
1715 (thanks to Chun Tian (binghe))
1716 * improvement: the debugger now displays variables that have been closed
1717 over, in code compiled with (DEBUG 2) or higher
1718 * improvement: support for executable cores on NetBSD (thanks to
1720 * new feature: added a RESTART-FRAME debugger command
1721 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1722 be used to provide an implementation for FILE-POSITION on Gray streams
1723 (thanks to Eric Marsden)
1724 * new feature: add syslog, openlog and closelog support to SB-POSIX
1725 (thanks to Richard Kreuter)
1726 * optimization: the function call overhead in code compiled with
1727 a high DEBUG optimization setting is significantly
1728 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1729 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1730 (thanks to Tony Martinez)
1731 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1732 evaluated once (reported by Kevin Reid)
1733 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1734 works again (thanks to Kilian Sprotte)
1735 * bug fix: an error is signaled for tagbodies with duplicate tags
1736 (thanks to Stephen Wilson)
1737 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1738 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1739 stack frames from alien callbacks.
1740 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1741 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1742 65k pages (thanks to David Woodhouse)
1743 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1745 changes in sbcl-1.0.1 relative to sbcl-1.0:
1746 * new platform: FreeBSD/x86-64, including support for threading.
1747 * new feature: the compiler stores cross-referencing information
1748 about function calls (who-calls), macroexpansion (who-macroexpands)
1749 and special variables (who-binds, who-sets, who-references) for code
1750 compiled with (< SPACE 3). This information is available through the
1751 sb-introspect contrib.
1752 * new feature: users may subclass SEQUENCE, and have instances of
1753 these classes interoperate with standard Common Lisp functions if
1754 a number of methods are defined. (This feature is experimental
1755 and the interface subject to change based on feedback from SBCL
1756 users and the general community)
1757 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1758 x86/x86-64, rather than the previous fixed depth of 8
1759 * improvement: another pthread back-end of mutex "pthread-futex".
1760 * bug fix: non-ascii command-line arguments are processed correctly
1761 (thanks to Yaroslav Kavenchuk)
1762 * bug fix: non-required arguments were not passed correctly when a method
1763 defined using DEFMETHOD was called from a mop-generated method using
1764 CALL-NEXT-METHOD (reported by Pascal Costanza)
1765 * bug fix: recursion is now permitted in accessors through
1766 SLOT-UNBOUND. (reported by Pascal Costanza)
1767 * bug fix: an error was signaled at startup if the HOME environment
1768 variable was defined, but had an empty value (reported by Peter Van Eynde)
1769 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1770 signal a PROGRAM-ERROR, not a BUG.
1771 * bug fix: SB-POSIX:READDIR works when built with large file support.
1772 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1774 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1775 for better automatic indentation support. (thanks to Matt Pillsbury)
1776 * optimization: loading generic functions no longer takes O(n^2) time,
1777 proportional to the amount of methods in the generic function
1778 (reported by Todd Sabin and Jeremy Brown)
1779 * optimization: the FIND and POSITION family of sequence functions
1780 are significantly faster on arrays whose element types have been
1782 * improvements to the Windows port:
1783 ** Intermittent heap corruption problems have been fixed. (thanks
1784 to Alastair Bridgewater)
1785 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1787 ** Lisp is able to unwind foreign exception frames from alien
1788 callbacks. (thanks to Alastair Bridgewater)
1790 changes in sbcl-1.0 relative to sbcl-0.9.18:
1791 * improvement: experimental support for threading on FreeBSD/x86.
1792 (thanks to NIIMI Satoshi)
1793 * improvement: runtime option --dynamic-space-size can be used
1794 to set the size of the dynamic space reserved on startup.
1795 * improvement: floating point modes in effect are now saved in
1796 core, and restored on startup.
1797 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1798 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1799 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1800 threads are not running after *SAVE-HOOKS* have run.
1801 * improvement: writes to CLOS instance slots are type-checked in code
1802 compiled with (SAFETY 3)
1803 * improvement: floating-point exception handling on FreeBSD (thanks to
1805 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1806 (thanks to Zach Beane)
1807 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1809 * improvement: added support for the Shift-JIS external format.
1810 (contributed by NIIMI Satoshi)
1811 * improvement: callbacks are supported on Linux/PPC. (thanks to
1813 * bug fix: compiler bug triggered by a (non-standard) VALUES
1814 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1815 * bug fix: file compiler no longer confuses validated and already
1816 dumped structurres. (reported by Kaersten Poeck)
1817 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1818 fill-pointer signals a type-error as required. (thanks to
1820 * bug fix: disassemly of funcallable instances works.
1821 * bug fix: single stepping on PPC.
1822 * bug fix: fix thread-safety problems in the type system (generally
1823 manifesting as nonsensical errors like "STRING is a bad type specifier
1824 for sequences" or "The value 1 is not of type FIXNUM")
1825 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1826 (reported by Josip Gracin)
1827 * bug fix: an error is signaled for attempts to displace arrays with
1828 incompatible element types (thanks to Mario Mommer)
1829 * bug fix: more correct handling of wide characters in debug info
1830 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1831 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1832 and don't cause extra consing
1833 * optimization: MAP and MAP-INTO are significantly faster on vectors
1834 whose elements types have been declared.
1835 * Improvements to SB-SPROF:
1836 ** Support for allocation profiling
1837 ** Reduced profiling overhead, especially for long profiling runs
1838 * Improvements to the Windows port:
1839 ** floating point exceptions are now reported correctly.
1840 ** stack exhaustion detection works partially.
1841 ** more accurate GET-INTERNAL-REAL-TIME.
1842 ** better RUN-PROGRAM behaviour in case of errors in the child
1844 ** PROBE-FILE now simplifies pathnames correctly.
1845 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1846 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1847 1st 1970 (although time timezone data will be unreliable).
1848 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1850 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1851 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1852 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1854 * bug fix: two potential GC deadlocks affecting threaded builds.
1855 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1856 returns T (reported by Anton Kazennikov)
1857 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1858 with non-variable places
1859 * bug fix: remove a race condition in the setting of
1860 funcallable-instance functions, this should make threaded CLOS
1861 code more stable against memory faults.
1862 * bug fix: corruption of specials when unbinding is interrupted by an
1863 asynchronous unwind (reported by Hannu Koivisto)
1864 * improvement: the debugger will now also display local variables that
1865 are only used once, for code compiled with a DEBUG optimization quality
1868 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1869 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1870 * incompatible change: External-format support for FFI calls. The
1871 SB-ALIEN:C-STRING no longer implies an ASCII
1872 external-format. Instead the string is subject to external-format
1873 conversion. Additionally return values of type SB-ALIEN:C-STRING
1874 are by default of type (SIMPLE-ARRAY CHARACTER), not
1875 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1876 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1877 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1878 * incompatible change: SB-EXT package no longer contains the
1879 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1880 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1882 * incompatible change: the single-stepper is no longer available
1883 on Alpha, Mips and Sparc platforms.
1884 * minor incompatible change: the direct superclasses of
1885 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1886 not (STANDARD-OBJECT FUNCTION). This makes the
1887 class-precedence-lists of GENERIC-FUNCTION and
1888 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1890 * minor incompatible change: the default stream external format on
1891 non-unicode SBCL is no longer detected from the locale, but is always
1893 * new feature: Add a version of evaluator that uses an interpreter instead
1894 of the compiler. EVAL still uses the compiler by default, to switch it
1895 to use the interpreter, set the value of the variable
1896 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1897 * minor incompatible change: the single-stepper REPL has been merged
1898 with the normal debugger (see the "Stepping" heading of the debugger help
1899 for more details). The debugger command STEP will no longer switch
1900 to the single-stepper REPL.
1901 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1902 for a type now works.
1903 * bug fix: loading of default sysinit file works. (thanks to Leonid
1905 * bug fix: better detection of circularities in the file-compiler.
1906 (reported by Marco Monteiro)
1907 * bug fix: the CL pathname functions now work with files that have
1908 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1909 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1910 systems with Unix98 pty semantics.
1911 * bug fix: ASDF-INSTALL will now work with bsd tar.
1912 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1914 * bug fix: timers expiring in dead threads no longer cause a
1915 type-error (reported by Paul "Nonny Mouse").
1916 * bug fix: thanks to more lightweight single-stepper instrumentation,
1917 code compiled with (DEBUG 3) will compile and execute significantly faster,
1918 and will have more accurate type-inferencing than before
1919 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1920 whose bindings are modified
1921 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1922 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1923 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1924 CL:SOFTWARE-VERSION with proper version
1926 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1927 * feature: implemented the READER-METHOD-CLASS and
1928 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1929 as specified by AMOP.
1930 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1932 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1933 (thanks to Lutz Euler)
1934 * optimization: hashing of general arrays and vectors has been
1935 improved. (reported by Any Fingerhut)
1936 * enhancement: SB-INTROSPECT is now able to find definitions of
1937 profiled functions. (thanks to Troels Henriksen)
1938 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1939 as well, allowing compiler-macros for SETF-functions to expand.
1940 * enhancement: step-instrumentation no longer wraps known
1941 single-value functions with multiple-value context, allowing
1942 better type inference.
1943 * fixed bug #337: use of MAKE-METHOD in method combination now works
1944 even in the presence of user-defined method classes. (reported by
1945 Bruno Haible and Pascal Costanza)
1946 * fixed bug #339(c): if there are applicable methods not part of any
1947 long-form method-combination group, call INVALID-METHOD-ERROR.
1948 (reported by Bruno Haible)
1949 * fixed bug #361: the :FUNCTION initarg in the protocol for
1950 initialization of methods can now be used to override
1951 internally-produced optimized functions. (reported by Bruno
1953 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1954 system-provided lambda expression no longer cause warnings about
1955 unbound #:|pv-table| symbols.
1956 * bug fix: improved the handling of type declarations and the
1957 detection of violations for keyword arguments with non-constant
1959 * bug fix: potentially erronous calls to PATHNAME and
1960 MERGE-PATHNAMES were being flushed in some cases.
1961 (reported by Richard Kreuter)
1962 * bug fix: compiled calls to TYPEP were mishandling obsolete
1963 instances. (reported by James Bielman and Attila Lendvai)
1964 * bug fix: format strings with ~> without matching ~< no longer
1965 trigger an AVER, but signal an understandable error instead.
1966 (reported by Antonio Martinez)
1967 * bug fix: specifying an output-file without a pathname-type for
1968 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1969 of input-file instead of "fasl". (reported by Robert Dodier)
1970 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1971 (reported by James Y Knight).
1972 * bug fix: compiler-macros-function did not consider the environment
1973 argument for shadowing by local functions.
1974 * bug fix: compiler-macros expansion was inhibited by local INLINE
1976 * bug fix: inline expansions of known functions were subject to
1977 step-instrumentation in high debug policies, leading to problems
1978 with type-inference.
1979 * bug fix: compiler failed to differentiate between different CONS
1980 types in some cases.
1981 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1982 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1983 * bug fix: #368: incorrect use of expressed vs. upgraded array
1985 * bug fix: #306a: more precise unions of array types.
1986 * thread-safety improvements:
1987 ** CONDITION-WAIT could return early on Linux, if the thread was
1988 interrupted and subsequently continued with SIGCONT.
1989 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1991 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1992 * added support for the ucs-2 external format. (contributed by Ivan
1994 * minor incompatible change: pretty printing of objects of type
1995 (cons symbol) is, in the default pprint-dispatch-table, now
1996 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1998 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1999 called later in a class's lifetime, possibly as late as when the
2000 first instance of the class is created. Previously,
2001 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2002 class became finalizeable.
2003 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2004 for multibyte external-format streams. (thanks to "vbzoli")
2005 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2006 with :ALLOCATION :CLASS inherited from superclasses of the
2008 * fixed bug: anonymous classes can now be created using the :NAME
2009 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2010 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2011 * fixed bug: core-files saved with :EXECUTABLE T can again be
2012 executed when SBCL_HOME isn't set. (reported by James Knight)
2013 * fixed bug: toplevel LOCALLY forms with declarations could
2014 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2015 * fixed bug: printing from several different threads using different
2016 values of *print-case* could cause invalid output, due to
2017 some internal special variables of the printer not being bound
2018 thread-locally (reported by Max Mikhanosha)
2019 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2020 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2021 (reported by Pascal Costanza)
2022 * fixed bug: FINALIZE-INHERITANCE is called from
2023 REINITIALIZE-INSTANCE on classes when the class has previously
2024 been finalized, as required by AMOP.
2025 * minor code generation optimizations:
2026 ** better register allocation in CLOS dispatching functions
2027 ** overflow detection when coercing signed bytes to fixnums on x86-64
2028 ** is now implemented with one IMUL instruction instead of three shifts
2029 ** more efficient bit-vector access on x86 and x86-64
2030 ** more efficient access to raw structure slots on x86 and x86-64
2031 * fixed some bugs revealed by Paul Dietz' test suite:
2032 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2033 return its argument.
2035 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2036 * feature: thread support on Solaris/x86, and experimental thread support
2038 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2040 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2041 default method for SLOT-UNBOUND.
2042 * minor incompatible change: prevent the user from specializing the
2043 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2044 somewhat counter to the intent of the protocol, I (CSR) think, and
2045 additionally it just doesn't work in SBCL as currently
2046 implemented, thanks to optimizations (that are always valid for
2047 the other three SLOT-VALUEish functions, but not for the setter).
2048 * minor incompatible change: the :SB-LDB feature is now enabled by
2049 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2050 the low-level debugger.
2051 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2052 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2053 down to an SB-SYS:FD-STREAM, allowing direct communication in
2054 more cases. Temporary files and pipes are still used as a fallback
2056 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2057 on the non-reentrant C functions localtime(3) and gmtime(3).
2058 * bug fix: global optimization policy was not visible in LOCALLY and
2060 * bug fix: class objects can be used as specializers in methods.
2061 (reported by Pascal Costanza)
2062 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2063 with a type error. (reported by blitz_ on #lisp)
2064 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2065 failed with a type error. (reported by Pascal Bourguignon)
2066 * bug fix: merging pathnames against defaults with :DIRECTORY
2067 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2068 (reported by James Y Knight)
2069 * bug fix: saving large (>2GB) cores on x86-64 now works
2070 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2071 constant index and a (simple-array (signed-byte 32)) array
2072 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2073 error (patch by Robert J. Macomber)
2074 * feature: TIME now displays the amount of run-time spent in GC
2075 * bug fix: The debugger now does a better job of respecting
2076 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2077 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2078 workaround for bug 403.)
2079 * bug fix: floating point exception handling now works on FreeBSD
2080 (thanks to NIIMI Satoshi)
2081 * fixed some bugs revealed by Paul Dietz' test suite:
2082 ** MISC.641: LET-conversion were not supposed to work in late
2084 * improvements to the Win32/x86 port:
2085 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2086 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2088 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2089 * new feature: source path information is generated for macro-expansion
2090 errors for use in IDE's like Slime (thanks to Helmut Eller)
2091 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2092 * bug fix: compiler does not loop forever on an invalid type in
2094 * improvement: compilation of most CLOS applications is significantly
2096 * optimization: added a limited bytecode compiler for simple toplevel
2097 forms, speeding up compilation and FASL loading
2098 * bug fix: the statistical profiler now properly distinguishes anonymous
2101 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2102 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2103 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2104 into subclasses of the finalized class. Now user calls to
2105 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2106 system return before any subclasses are finalized.
2107 * minor incompatible change: The reader no longer ignores errors
2108 regarding non-existent packages in #+ and #- feature tests.
2109 * new feature: command line options --no-sysinit, --no-userinit to
2110 inhibit loading the corresponding init files
2111 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2112 for sending data through UDP sockets (thanks to François-René Rideau)
2113 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2114 error is signalled instead (thanks to François-René Rideau)
2115 * minor incompatible change: Error signalling behaviour of lexical
2116 operations violating package locks has changed slightly. Refer to
2117 documentation on package locks for details.
2118 * enhancement: EVAL can process IF-expressions without resorting to the
2120 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2121 constant-folded properly due to missing out-of-line functions.
2122 (reported by Mika Pihlajamäki)
2123 * bug fix: LISTEN sometimes returned T even in cases where no data was
2124 immediately available from the stream
2125 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2126 were reversed. (reported by Levente Mészáros)
2127 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2128 when given a vector displaced to an adjustable array. (reported
2130 * bug fix: derivation of float boundaries from numbers outside the
2131 appropriate float range (reported by John Wiseman)
2132 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2134 * bug fix: precomputing cache entries for generic functions with
2135 some subclasses of specializers as yet invalid does not attempt to
2136 fill a cache line with a negative offset. (reported by Levente
2138 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2139 allow condition class objects as arguments to DOCUMENTATION and
2140 (SETF DOCUMENTATION); only find and set documentation for
2141 structure names for the STRUCTURE doc-type. (suggested by Gary
2143 * improvements to the Win32/x86 port:
2144 ** (user-homedir-pathname) and default initialization file
2145 locations now know about the user's "Documents and Settings"
2146 directory (thanks to Yaroslav Kavenchuk)
2147 ** run-program is implemented (thanks to Mike Thomas)
2148 ** sockets support (thanks to Timothy Ritchey)
2149 ** better backtrace support (thanks to Alastair Bridgewater)
2150 ** sb-grovel supported
2151 ** asdf-install and sb-posix work somewhat
2152 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2153 * improvements to the Solaris/x86 port:
2154 ** works on Solaris 11/Solaris Express
2155 ** floating-point exception handling support
2156 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2157 * fixed some bugs revealed by Paul Dietz' test suite:
2158 ** REMOVE-METHOD returns its generic function argument even when
2159 the method is not one of the generic functions' methods.
2160 ** objects declared as MEMBER types can be admissible arguments to
2161 structure accessors.
2162 ** printing characters should simply be printed by the FORMAT ~:C
2164 ** compiler failure when compiling functions with hairy constant
2165 defaults for optional parameters.
2166 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2167 function, which is already optimized.
2169 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2170 * new platform: experimental support for SBCL x86/Darwin, including
2171 MacOS X 10.4.5 on Intel.
2172 * new feature: Unicode character names are now known to the system
2173 (through CHAR-NAME and NAME-CHAR).
2174 * new feature: the filesystem location of SBCL's core file is
2175 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2176 * minor incompatible change: the contrib modules SB-POSIX and
2177 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2178 this change is to make it easier to distribute
2179 location-independent binaries.
2180 * bug fix: as implied by AMOP, standardized classes no longer have
2181 slots named by external symbols of public packages. (reported by
2183 * optimization: calling functions via constant symbols -- as in
2184 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2185 via the function object as in (FUNCALL #'FOO).
2186 * optimization: on x86 and x86-64, the calling convention for the
2187 case of dealing with an unknown number of values has been altered
2188 to be friendlier to the prediction heuristics implemented,
2189 particularly with reference to CALL and RET pairing. (thanks to
2190 Alastair Bridgewater)
2191 * optimization: on x86, the code for access to thread-local symbol
2192 values and binding/unbinding of thread-local symbols is smaller.
2193 (thanks to Alastair Bridgewater)
2194 * enhancement: CONSTANTP is now able to determine constantness of
2195 more complex forms, including calls to constant-foldable standardized
2196 functions and some special forms beyond QUOTE.
2197 * fixed bug: occasional GC crashes on Solaris/x86
2198 * optimization: x86-64 supports stack allocation of results of simple
2199 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2200 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2201 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2202 (thanks to James Knight)
2203 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2204 by the standard (thanks to Stephen Compall)
2206 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2207 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2208 be used for bundling the runtime and the core file into one
2209 executable binary. This feature is not currently supported on all SBCL
2210 platforms. (thanks to James Bielman and NIIMI Satoshi)
2211 * new feature: a generational or ephemeral garbage collector is now
2212 the default on the PowerPC platform (both Linux and Darwin). The
2213 old Cheney (stop and copy) collector is a build-time option.
2214 (thanks to Cyrus Harmon, after Raymond Toy)
2215 * minor incompatible change: the method by which SBCL finds its
2216 contributed modules has changed; it no longer relies on symbolic
2217 links from an $SBCL_HOME/systems directory, but searches directly
2218 in the subdirectories of $SBCL_HOME.
2219 * enhancement: the dynamic heap size on the Linux/PPC platform is
2220 markedly larger, even using the older Cheney garbage collector.
2221 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2222 certain complicated string types. (reported by Gary King)
2223 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2224 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2225 * fixed bug: DOCUMENTATION on structures no longer signals an
2226 error if no structure type of the right name exists. (reported by
2228 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2229 applicable non-standard primary or :AROUND method on
2230 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2231 no longer cause unbound variable errors. (reported by Kevin Reid)
2232 * fixed bug: metacircle resolution in cases where methods have slots
2233 added before the slots from STANDARD-METHOD. (reported by Jean
2235 * fixed bug: the Power PC assembly code for calling into lisp
2236 sometimes computed its return address wrongly (depending on the
2237 15th bit of the address, fixed at link time). This used to
2238 manifest itself in a segmentation violation while building PCL.
2239 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2240 many others over the years)
2241 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2242 the stack pointer (treated as a signed integer) is negative.
2243 (thanks to Peter van Eynde)
2245 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2246 * new platform: experimental support for the Windows operating
2247 system has been added. (thanks to Alastair Bridgewater)
2248 * fixed several bugs in and robustified the PPC FFI (including
2249 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2250 * bug fix: allow non-simple string symbol names (reported by Paul
2252 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2254 * bug fix: saving a core corrupted callbacks on x86/x86-64
2255 * bug fix: closed a loophole in metacircularity detection and
2256 grounding in the PCL implementation of CLOS.
2257 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2258 (reported by tomppa on #lisp)
2259 * bug fix: clear the direction flag on Lisp -> C transitions, as
2260 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2261 (reported by Andrej Grozin and Hendrik Maryns)
2262 * optimization: major improvements to GC efficiency on GENCGC platforms
2263 * optimization: faster implementation of EQUAL
2264 * optimization: emit more efficient opcodes for some common
2265 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2266 * optimization: several other minor code-generation improvements on x86-64
2267 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2269 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2270 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2271 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2272 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2273 by ANSI as a generic function, and for consistency (SETF
2274 GENERIC-FUNCTION-NAME) is treated likewise.
2275 * fixed bug #233.b: make constraint propagation notice when a variable
2276 value is changed after it is referenced but before it is used
2277 * fixed bug #296: no more arbitrary behaviour from filenames with
2278 odd characters as --load arguments. (reported by Adam Warner)
2279 * fixed bug #390: :CHARACTER-SET pathname components now work as
2280 expected. (reported by Tim Daly Jr)
2281 * fixed bug #391: complicated :TYPE intersections in slot
2282 definitions no longer cause an error in PCL internals.
2283 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2284 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2285 returning the number of octets which would be written to the
2286 file-stream. (thanks to Robert J. Macomber)
2287 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2288 arguments to the internal stream functions. (thanks to David
2290 * bug fix: stack exhaustion is now handled on the x86/SunOS
2291 platform. (thanks to Daisuke Homma)
2292 * bug fix: more accurate ROOM results on GENCGC platforms
2293 * optimization: improved type inference for arithmetic-for
2294 index variables in LOOP
2295 * optimization: faster floating-point SQRT on x86-64
2296 * fixed some bugs revealed by Paul Dietz' test suite:
2297 ** DOCUMENTATION returns NIL instead of "" for method combinations
2298 that don't have a docstring
2300 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2301 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2302 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2303 therefore are not customizeable by user code (as seems to be at
2304 least permitted and maybe required by AMOP). As a consolation,
2305 however, the SBCL implementation of these functions now calls
2306 REINITIALIZE-INSTANCE as specified by AMOP.
2307 * bug fix: slot-definition documentation is propagated as per ANSI
2308 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2309 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2310 argument, as do eslotd initialization methods. (from Pascal
2311 Costanza's "Closer" project)
2312 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2313 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2315 * bug fix: it is now possible to have more than one subclass of
2316 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2317 (reported by Bruno Haible, Pascal Costanza and others)
2318 * bug fix: the dependent update protocol now works for generic
2319 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2320 and Pascal Costanza)
2321 * bug fix: condition-class instances corresponding to
2322 DEFINE-CONDITION forms are now created eagerly. (reported by
2323 Kalle Olavi Niemitalo on comp.lang.lisp)
2324 * bug fix: floating point printing is more accurate in some
2325 circumstances. (thanks to Simon Alexander)
2326 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2327 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2328 * bug fix: callbacks on OS X now preserve stack-alignment.
2329 (thanks to Cyrus Harmon)
2330 * enhancement: the x86-64 disassembler is much better at
2331 disassembling SSE instructions. (thanks to Lutz Euler)
2332 * enhancement: CHECK-TYPE on a variable now allows type-inference
2333 (thanks to Vincent Arkesteijn)
2334 * optimization: improved performance of EUC-JP external format.
2335 (thanks to NIIMI Satoshi)
2336 * optimization: performance improvements to IO on file streams of
2337 :ELEMENT-TYPE CHARACTER
2338 * optimization: much faster memory allocation on x86-64
2339 * optimization: faster garbage collections (latency and throughput)
2341 * optimization: faster bignum subtraction and division on x86 and x86-64
2342 (thanks to Lutz Euler)
2343 * optimization: more accurate type-inference for loops that use a
2344 floating point index variable or a negative step.
2346 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2347 * bug fix: add a workaround to SBCL looping infinitely at startup on
2348 Linux kernels with apparently buggy implementations of personality().
2349 (thanks to Svein Ove Aas)
2350 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2351 (thanks to David Lichteblau)
2352 * bug fix: local bindings shadow global symbol macros for
2353 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2354 * optimization: non-open coded uses of numeric comparison operators
2355 (e.g. >) no longer cons when called with more than one parameter
2356 on platforms supporting dynamic-extent allocation.
2357 * enhancement: saving cores with foreign code loaded is now supported
2358 on MIPS/Linux in addition to the previously supported platforms.
2359 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2360 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2361 * bug fix: division by zero in sb-sprof when no samples were collected
2362 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2363 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2364 (thanks to Alexander Kjeldaas)
2365 * new feature: ignoring the return values of destructive functions
2366 like NREVERSE signals a compile-time style-warning.
2367 (thanks to Kevin Reid)
2368 * new feature: the alignment of alien structure fields can be
2369 explicitly specified. (thanks to Cyrus Harmon)
2370 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2371 and dump core on SIGQUIT
2373 ** incompatible change: threads do not inherit values of specials
2374 from their parents (see manual)
2375 ** bug fix: threads stacks belonging to dead threads are freed by the
2376 next exiting thread, no need to gc to collect thread stacks anymore
2377 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2378 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2379 ** bug fix: dynamic variable and thread start related gc lossage
2380 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2382 * fixed some bugs revealed by Paul Dietz' test suite:
2383 ** SUBTYPEP is slightly more accurate on heinously complicated
2384 CONS types where some of the members have uncertain (in the
2385 NIL, NIL sense) type relationships to each other.
2387 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2388 no longer purified unless :PURIFY T is explicitly specified.
2389 ** Non-purified cores are significantly smaller than before
2391 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2392 * new feature: timers based on Zach Beane's excellent timer package
2393 * added support for the following external formats: koi8-u,
2394 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2395 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2396 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2397 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2398 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2399 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2400 * incompatible change: a threaded SBCL will no longer revert to
2401 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2402 * bug fix: interrupts are disabled until startup is complete; no
2403 more sigsegvs when receiving a signal to soon
2404 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2406 * bug fix: add a workaround for the memory randomization features in
2407 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2408 workaround will only be in effect on systems with the proc filesystem
2410 * bug fix: printing objects of type HASH-TABLE signals a
2411 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2413 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2414 have been running for over 50 days. (reported by Gilbert Baumann)
2415 * bug fix: the logic for getting names of functions gets less
2416 confused when confronded with alternate-metaclass
2417 funcallable-instances. (reported by Cyrus Harmon)
2418 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2419 consistent, even on internal alternate-metaclass objects.
2420 * bug fix: flush closure information collected by physical
2421 environment analysis prepass before the main pass. (bug reported
2423 * bug fix: compiler pack phase does not modify a hashtable, which is
2424 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2425 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2426 may be expanded. (reported by Alexander <malishev> on c.l.l)
2427 * bug fix: no more style-warnings when compiling code using LAST
2428 under high-SPEED low-SPACE settings. (reported by David Wallin
2430 * fixed some incompatibilities between SBCL's MOP and the MOP
2432 ** the METAOBJECT class is now implemented;
2433 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2434 STANDARD-OBJECT, as required;
2435 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2436 now compatible (as required by VALIDATE-SUPERCLASS); there
2437 remains a consistency requirement over the presence or absence
2438 of the FUNCTION class in the superclass list of finalized
2439 classes; see the manual for more details;
2440 ** the :AROUND method for COMPUTE-SLOTS on
2441 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2442 requested slot ordering.
2444 ** bug fix: parent thread now can be gc'ed even with a live
2446 ** bug fix: binding a special with PROGV to no value is not
2447 the same as that symbol not having been bound (thanks to
2449 ** bug fix: binding specials is thread safe (thanks to
2451 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2452 and SB-SPROF do not die with 'no handler for signal XX in
2453 interrupt_handle_now(..)' anymore
2454 ** bug fix: WITH-TIMEOUT works with multiple running threads
2455 * fixed some bugs revealed by Paul Dietz' test suite:
2456 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2457 the :method-class keyword argument.
2459 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2460 * new port: the Solaris operating system on x86 processors is now
2461 mostly supported, though some rough edges in the environment
2462 remain. (thanks to Daisuke Homma)
2463 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2464 space for its heap. (thanks to Thiemo Seufer)
2465 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2466 closures. (thanks to Thiemo Seufer)
2467 * minor incompatible change: eof selects abort in the debugger.
2468 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2469 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2471 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2472 deprecated, and will go away in a future revision of SBCL.
2473 * minor incompatible change: GC-ON and GC-OFF are no longer
2474 implemented with a counter, it does not matter how many times gc
2475 is switched on or off
2476 * bug fix: discriminating functions for generic function classes
2477 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2478 make invalid assumptions about method precedence order. (reported
2480 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2481 platforms. (thanks to Thiemo Seufer)
2482 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2483 * bug fix: correct pathname printing with printer escaping is on.
2484 (thanks to Kevin Reid)
2485 * bug fix: complex VOP definitions in "user-space" no longer trigger
2486 package locks. (reported by Zach Beane)
2487 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2488 for funcallable-instance functions, and is no different from
2490 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2491 characters in the current readtable. (reported by Nicholas Neuss)
2492 * bug fix: SUBTYPEP on various CONS types returns more a more
2493 accurate acknowledgment of its certainty.
2494 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2495 lists in some cases. This partially fixes bug 384.
2496 * flush all standard streams before prompting in the REPL and the
2498 * bug fix: signal handling and triggering gc do not conflict
2499 directly anymore, in particular a high frequency sb-sprof does
2500 not prevent gc from running
2501 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2502 approximation for timezone and DST information between the
2503 universal time epoch and the smallest negative 32-bit time_t.
2504 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2505 year 1899 so long as the encoded time is non-negative.
2506 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2507 the correct answer for non-constant rotate amounts when performing
2508 an inline 32-bit rotation.
2510 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2511 there is only one thread in the session
2512 ** bug fix: memory leak for streams created in one thread and
2513 written to in another
2514 ** bug fix: lockup when compiled with gcc4
2515 ** bug fix: race that allows the gc to be triggered when gc is
2517 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2518 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2520 ** bug fix: finished threads are gc'ed properly
2521 * fixed some bugs revealed by Paul Dietz' test suite:
2522 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2523 has arguments with a different set of applicable methods from
2524 the orignal arguments.
2525 ** The type error thrown by MAP now has a correct expected-type
2527 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2528 name a compiled function.
2529 ** Three MISC tests where a large bignum was improperly coerced to
2530 a float that couldn't represent that bignum during type
2531 derivation were fixed.
2532 ** SUBTYPEP can now handle types involving the negation of a
2533 list-form FUNCTION type.
2534 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2535 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2536 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2538 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2539 * New feature: Experimental support for bivalent streams: streams
2540 opened with :element-type :default now allow character and binary
2541 (unsigned-byte 8) I/O
2542 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2543 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2545 * bug fix: no more highly sporadic "couldn't check whether ~S is
2546 readable" when reading a stream and an interrupt hits in the middle
2547 of a select system call
2548 * compiler better recognizes complex arrays (reported by Eduardo
2550 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2551 for variables on SBCL built with linkage-tables. (reported by Luis
2553 * various error reporting improvements.
2554 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2555 (Thanks to Thiemo Seufer)
2556 * bug fix: nested reader invokations work correctly
2557 * bug fix: it is possible to have simultaneous references to foreign
2558 code and foreign data with the same name.
2560 ** added x86-64 support
2561 ** incompatible change: the threading api now works with thread
2562 objects instead of thread ids
2563 ** bug fix: threads are protected from signals and interruption when
2564 starting up or going down
2565 ** bug fix: a race where an exiting thread could lose its stack to gc
2566 ** bug fix: don't halt on infinite error in threads if possible
2567 ** fixed numerous gc deadlocks introduced in the pthread merge
2568 ** bug fix: fixed thread safety issues in read and print
2569 ** bug fix: debugger doesn't hang on session lock if interrupted at
2570 an inappropriate moment
2571 ** bug fix: run-program is now thread safe(r)
2572 ** bug fix: inner with-recursive-lock no longer releases the mutex
2573 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2574 * fixed some bugs revealed by Paul Dietz' test suite:
2575 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2576 EXPECTED-TYPE slots filled.
2577 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2579 ** MAKE-CONDITION accepts classes as type-designators.
2580 ** COMPILE may never return NIL.
2581 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2582 range before calling Unix time functions
2584 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2585 * numerous signal handling fixes to increase stability
2586 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2587 * minor incompatible change: we now correctly canonize default
2588 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2589 as per the MOP, rather than the historical (INITARG INITFUNCTION
2590 INITFORM). (reported by Bruno Haible)
2591 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2592 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2593 for more information.
2594 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2595 pathname is a directory pathname.
2596 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2597 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2599 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2600 :METACLASS argument in addition to a class name. (reported by
2601 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2602 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2603 (reported by Bruno Haible; patch from Gerd Moellmann)
2604 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2606 * bug fix: more cleanups to the floating point exception handling on
2607 x86-64 (thanks to James Knight)
2608 * bug fix: the compiler does not try to constant fold calls of
2609 COERCE and BIT-* functions when they return freshly constructed
2610 objects. (reported by Nikodemus Siivola and Paul Dietz)
2611 * optimization: improved the MIPS versions of generic (in the
2612 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2613 * optimization: direct conversion of (unsigned-byte 32) to floats on
2614 the PowerPC platform.
2615 * optimization: structure instances with raw slots now use less
2616 memory, and probably show better memory locality. (thanks to
2618 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2619 are treated as requests for stack allocation on the x86-64,
2620 Alpha-32, PPC and SPARC platforms.
2621 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2622 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2623 (thanks to Tony Martinez)
2625 ** gcing a dead thread can no longer lead to lockups
2626 ** threads block signals until they are set up properly
2627 ** errno is no longer shared by threads
2628 ** interrupt-thread restores the eflags register on x86
2629 ** fixed some lockups due to gc/thread interaction
2630 * fixed some bugs revealed by Paul Dietz' test suite:
2631 ** invalid dotted lists no longer raise a read error when
2632 *READ-SUPPRESS* is T
2633 ** signal an error if a symbol that names a declaration is used
2634 as the name of a type, or vice versa
2635 ** allow using the (declare (typespec var*)) abbreviation for
2636 (declare (type typespec var*)) with all type specifiers
2637 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2638 ** always return NIL from PPRINT-POP when OBJECT is NIL
2639 ** don't signal errors when pretty-printing malformed LABELS,
2640 FLET or MACROLET forms
2641 ** declarations in a DOLIST body are also in scope for the
2643 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2645 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2648 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2649 * fixed cross-compiler leakages that prevented building a 32-bit
2650 target with a 64-bit host compiler.
2651 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2652 opened with :IF-EXISTS :OVERWRITE.
2653 * fixed bug 281: error for an invalid qualifier in a short-form method
2654 combination method is not signalled until the faulty method is called.
2655 * bug fix: iteration variable type inferrer failed to deal with open
2656 intervals. (reported by Alan Shields)
2657 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2658 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2659 or more runtime options were provided to the sbcl binary.
2660 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2661 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2662 * optimization: there's now a fast-path for fixnum arguments in the
2663 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2664 * optimization: the code generated on x86-64 is more compact thanks
2665 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2666 * bug fix: floating-point exception handling now partly works on
2667 x86-64. (Thanks to James Knight)
2668 * improvement to the MIPS backend from Thiemo Seufer: C-style
2669 64-bit long long arguments and return values to alien functions
2671 * fixed some bugs revealed by Paul Dietz' test suite:
2672 ** the type-error signalled from WARN has a filled-in DATUM slot.
2673 ** the type-error required when a stream is not associated with
2674 a file has the stream as its datum.
2675 ** type-errors on single-floats on x86-64 no longer have
2676 :INVALID-OBJECT as the datum
2677 ** the type-errors signalled for invalid function names now have
2678 a correct expected type
2679 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2680 for structures defined with a :TYPE. Documentation strings for
2681 typed structures are no longer immediately discarded
2682 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2683 broadcast streams and synonym streams. FILE-LENGTH now also works
2684 on broadcast streams.
2686 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2687 * incompatible change: the --noprogrammer option, deprecated since
2688 version 0.7.5, has been removed. Please use the equivalent
2689 --disable-debugger option instead.
2690 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2692 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2693 inoperational for a while now) has been completely removed.
2694 * null lexical environments are now printed as #<NULL-LEXENV>,
2695 significantly reducing the amount of clutter in typical backtraces.
2696 * documentation on weak pointers, finalization, and after GC hooks
2697 has been added to the manual.
2698 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2699 as other specialized array types, is much faster. SUBSEQ and
2700 COPY-SEQ on such arrays have also been sped up.
2701 * optimization: EQL is now more efficient when at least other argument
2702 is known to be of type (OR FIXNUM (NOT NUMBER)).
2703 * fixed bug: the runtime is now less vulnerable to changes in the
2704 size of the SBCL object on OS X, and virtual memory is reserved for
2705 all spaces that need to be at a fixed address.
2706 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2707 * fixed bug: finalizers and after GC hooks that cause consing are now
2709 * fixed bug: compiler error messages and summaries are now printed to
2710 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2711 * fixed inference of the upper bound of an iteration variable.
2712 (reported by Rajat Datta).
2713 * fixed bug 211e: calling local functions with duplicated constant
2714 keyword argument no longer causes a bogus style warning about an
2716 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2717 ftype declaration to be disregarded. (reported by Dave Roberts)
2718 * fixed bug 373: caused by erronous compilation of references to alien
2719 variables in the runtime on ppc/darwin.
2720 * fixed bug 376: CONJUGATE type deriver.
2721 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2722 (reported by Baughn on #lisp)
2723 * a cross-compiler bug on non-x86 platforms has been identified and
2724 fixed. (thanks to Bruno Haible)
2725 * improvements to the MIPS runtime code for increased stability.
2726 (thanks to Thiemo Seufer)
2727 * increased the maximimum compact environment size to allow
2728 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2729 * partial workaround for bug 135: don't name the function we're
2730 calling for hairy cases of EVAL, so as not to accumulate one environment
2731 entry per call to EVAL. (reported by Kevin Reid)
2732 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2733 * optimization: type testing for non-vector arrays should be faster.
2734 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2736 * bug fix: setting 31st element of a bit vector to zero did not work
2738 * bug fix: redefining a class definition which failed due to a
2739 previous accessor / function clash now works (but see BUGS entry
2740 #380 for more problems in this area). (thanks to Zach Beane)
2741 * the long form of DEFINE-METHOD-COMBINATION disables method group
2742 checking when given a single method group with pattern *. (thanks
2744 * on x86 compiler supports stack allocation of results of simple
2745 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2746 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2747 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2748 * fixed some bugs related to Unicode integration:
2749 ** the restarts for recovering from input and output encoding
2750 errors only appear when there is in fact such an error to
2752 * fixed some bugs revealed by Paul Dietz' test suite:
2753 ** MISC.549 and similar: late transformation of unsafe type
2754 assertions into derived types caused unexpected code
2756 ** SCALE-FLOAT type deriver is less wrong.
2757 ** type derivers for EXP, LOG and similar functions compute result
2758 types for complex arguments better.
2759 ** (MISC.563) CONJUGATE type deriver works for very restricted
2761 ** out-of-line type testers for character strings are available.
2762 ** EQUAL compiler transform understands specialness of objects
2764 ** accessing double-floats stored on the stack now works on x86-64.
2765 ** debugger internals could sometimes create invalid lispobjs,
2766 resulting in GC crashes.
2767 ** MISC.548: type check weakening can convert required type into
2769 ** initialization forms for bindings are not in scope of free special
2772 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2773 * incompatible change: thread support for non-NPTL systems has
2774 been removed - locking is buggy and unreliable. A threaded
2775 SBCL build will now warn at startup and refuse to create
2776 new threads, unless futex support is detected in the kernel
2777 * incompatible change: the top level REPL now has only an ABORT
2778 restart associated with it, not TOPLEVEL and ABORT as it used to.
2779 TOP and TOPLEVEL are now available as debugger commands for
2780 returning to the top level.
2781 * incompatible change: forms evaluated in the REPL now use the
2782 global optimization policy.
2783 * incompatible change: user- and system-initialization files are
2784 no longer processed with LOAD, but by READ and EVAL; hence the
2785 global optimization policy, startup package, readtable, etc,
2787 * The .fasl file format number has been incremented because of
2788 various incompatible changes.
2789 * internal entry point details and argument counts no longer appear
2790 in backtraces unless explicitly requested by setting
2791 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2792 * built-in and standard functions no longer have names like "top
2793 level local call to FOO".
2794 * fixed bug 32: functions defined in non-null lexical environments
2795 now have more legible printed representation
2796 * fixed bug 33: functions defined in non-null lexical environemnts
2797 are now more amenable to inspection by INSPECT.
2798 * workaround for bug 354: XEPs no longer appear in backtraces unless
2799 explicitly requested.
2800 * fixed bug: receiving the signal which results from attempting to
2801 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2802 SIGBUS on other *BSDs) on architectures where the C stack is also
2803 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2804 to debugger confusion or wild instability. (reported by Cheuksan
2806 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2807 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2808 (reported by Lutz Euler)
2809 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2810 compiled code. (reported by Paul Dietz)
2811 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2812 specialized parameter to a method to something that is not TYPEP
2813 the specializer is now possible.
2814 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2815 face of package deletion.
2816 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2817 pathname. (reported by David Tolpin on c.l.l)
2818 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2819 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2820 STRING-STREAM and FILE-STREAM, respectively.
2821 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2822 than previously; in addition, its test suite is now run on build.
2823 (thanks to Luke Gorrie)
2824 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2825 * optimization: added a immediate representation for single-floats
2827 * fixed some bugs revealed by Paul Dietz' test suite:
2828 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2829 ** attempting to create a package with a colliding nickname causes
2830 correctable errors to be signalled.
2831 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2832 ** several x86-64 backend bugs related to sign-extension of immediate
2835 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2836 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2837 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2839 * fixed loading of multiply forward-referenced layouts.
2840 (thanks to Cheuksan Wang)
2841 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2842 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2843 (see COMPILE-FILE documentation for details of :PRINT option)
2844 * fixed bugs 19 and 317: fixed-format floating point printing is
2845 more accurate. This also fixes a bug reported by Adam Warner
2846 related to the ~@F format directive.
2847 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2849 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2850 dispatch table if the from-char is a dispatch macro character.
2851 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2852 by the wordsize no longer ignore the last word. (reported by Lutz
2854 * fixed bug in type checking of dynamic-extent variables. (reported
2856 * optimization: sequence traversal functions use their freedom to
2857 coerce function designators to functions.
2858 * optimization: code with many calls to CLOS methods specialized on
2859 CLOS classes has had redundant type checks removed.
2860 * optimization: added declarations to speed up operations that access
2861 the internal character database (for example STRING-UPCASE)
2862 * optimization: comparison operations between floats and sufficiently small
2863 fixnums no longer create extra rationals
2864 * fixed some bugs related to Unicode integration:
2865 ** portions of multibyte characters at the end of buffers for
2866 character-based file input are correctly transferred to the
2867 start of the buffer at the next read.
2868 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2869 passing it through to OPEN.
2870 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2871 argument given to internal calls to OPEN.
2872 ** the built-in comment readers (introduced by character sequences
2873 ";" and "#|") are more forgiving to encoding errors; they will
2874 STYLE-WARN and then attempt to resync the stream at a character
2875 boundary. (thanks to Teemu Kalvas)
2876 * fixed some bugs in the x86-64 port:
2877 ** Negative short int return values from c-calls are sign-extended
2879 ** The stack is aligned to 16-bytes for c-calls, as required by
2880 the ABI. (thanks to Cheuksan Wang)
2881 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2882 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2883 for enums. (thanks to Vincent Arkesteijn)
2884 ** Multiple small optimizations and bugfixes for floating point
2886 * fixed some bugs revealed by Paul Dietz' test suite:
2887 ** Space, Tab, Linefeed, Return and Page have the invalid
2888 secondary constituent character trait.
2889 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2891 ** WITH-INPUT-FROM-STRING should only update the index place on
2893 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2894 works more reliably.
2895 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2896 with one-dimensional arrays with fill pointers.
2897 ** TYPE-OF failed on a complex with an integer realpart and a
2899 ** compiler failure during type inference for the code of form
2900 (IF (EQL X (THE ...)) ...) (MISC.535).
2902 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2903 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2904 platform. The port supports 61-bit fixnums, large memory spaces
2905 and reloading shared object files.
2906 * enhancement: saving cores with foreign code loaded is now
2907 supported on ppc/Darwin in addition to the previously supported
2909 * enhancement: the statistical profiler now walks deeper into the
2910 call stack for more meaningful call-graphs and accrued time
2911 reports (x86/x86-64 only). It also now reports time spent in
2913 * enhancement: it is now possible to trace most individual methods
2914 of a generic function in addition to tracing the generic function
2916 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2918 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2919 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2920 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2921 produces an error. (thanks to Vincent Arkesteijn)
2922 * bug fix: NAMESTRING on pathnames with :WILD components in their
2923 directories works correctly. (thanks to Artem V. Andreev)
2924 * fixed bug 125: compiler preserves identity of closures. (reported
2926 * bug fixed: functions with &REST arguments sometimes failed with
2927 "Undefined function" when compiled with (DEBUG 3). (reported by
2929 * bug fix: overflow during compiling of setting element of a bit
2930 vector with constant index and value. (reported by Timmy Douglas)
2931 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2932 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2933 * on x86 compiler partially supports stack allocation of dynamic-extent
2935 * GO and RETURN-FROM do not check the extent of their exit points
2936 when compiled with SAFETY 0.
2937 * fixed some bugs related to Unicode integration:
2938 ** encoding and decoding errors are now much more robustly
2939 handled; it should now be possible to recover even from invalid
2940 input or output to the terminal. (thanks to Teemu Kalvas)
2941 ** provided a first cut at implementing STRING-TO-OCTETS and
2942 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2943 ** altered the SB-MD5 contributed module slightly, changing the
2944 interface just enough for it to be supportable for builds where
2945 lisp characters are not eight bits.
2946 * fixed some bugs revealed by Paul Dietz' test suite:
2947 ** the FORMATTER-generated functions for ~V[ conditionals require
2948 the correct number of arguments.
2949 ** READ-FROM-STRING returns the mandated second value when applied
2950 to displaced strings.
2951 ** the #\Rubout and #\Backspace characters are treated as invalid
2952 constituent characters by the tokenizer.
2954 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2955 * new feature: reloading changed shared object files with
2956 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2957 * new feature: references to foreign variables and functions
2958 can now be compiled and loaded before the corresponding shared
2959 object file is loaded, as long as the foreign definitions are
2960 available at runtime.
2961 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2962 supported. (thanks to Dan Debertin)
2963 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2964 just keywords. (thanks to Vincent Arkesteijn)
2965 * fixed bug #331: structure-class instances corresponding to
2966 DEFSTRUCT forms are now created eagerly.
2967 * fixed bug #345: backtraces from calls to undefined functions work
2968 on x86 as well. Related bug #61 is now also partially fixed on x86
2969 (backtraces from throws to unknown catch tags.)
2970 * bug fix: lambda-list parsing is now stricter vrt. order and number
2971 of lambda-list keywords.
2972 * bug fix: as specified by AMOP, an error is signalled if a
2973 class-option appears multiple times in a DEFCLASS form. (reported
2975 * bug fix: RANDOM can be compiled when the compiler derives the type
2976 of its numeric argument as a disjoint set of small integers.
2977 (reported by Paul Dietz)
2978 * bug fix: starting a core saved with shared objects loaded when
2979 those objects are not available no longer causes threaded SBCL to
2980 hang. (reported by Sean Ross)
2981 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2983 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2984 argument, which must always be NIL. (reported by Kalle Niemitalo)
2985 * bug fix: printing 1.0d+23 no longer results in an error.
2986 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2987 * bug fix: structure slot setters preserve evaluation order. (thanks
2989 * fixed some bugs related to Unicode integration:
2990 ** RUN-PROGRAM can allow its child to take input from a Lisp
2991 stream. (reported by Stefan Scholl)
2992 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2993 locales. (reported by Ken Causey)
2994 * fixed some bugs revealed by Paul Dietz' test suite:
2995 ** INCF, DECF and REMF evaluate their place form as specified in
2997 ** FORMATTER expands ~{ ~} iteration directives with V or #
2998 parameters correctly.
2999 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3000 consequent uses no arguments correctly.
3001 ** the system has a partial understanding of the (COMPLEX RATIO)
3003 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3006 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3007 * new feature: a build-time option (controlled by the :SB-UNICODE
3008 keyword feature, enabled by default) for building the system with
3009 support for the entire 21-bit character space defined by the
3011 * new feature: the system now has rudimentary external-format
3012 support; the primary user-visible change at this time is that
3013 characters with the high bit set (such as lower-case-e-acute) will
3014 print correctly to a terminal in a UTF-8 environment.
3015 * minor incompatible change: BASE-CHAR no longer names a class;
3016 however, CHARACTER continues to do so, as required by ANSI.
3017 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3018 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3019 has been moved to the SB-EXT package (temporarily re-exported from
3021 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3022 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3024 * fixed bug #351: better error-handlind and reporting for malformed
3026 * fixed bug #350: bignum-printing is now more memory-efficient,
3027 allowing printing of very large bignums, eg. (expt 2 10000000).
3028 (reported by Bruno Haible)
3029 * fixed bug #302: better primitive-type selection for intersection
3031 * fixed bug #308: non-graphic characters now all have names, as
3032 required. (reported by Bruno Haible)
3033 * bug fix: redefining a class with different superclasses now correctly
3034 removes it from the direct-subclasses of its previous superclasses.
3035 (reported by David Morse)
3036 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3037 new value now works. (reported by Bruno Haible)
3038 * bug fix: correct canonicalization of multiple non-standard slot
3039 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3040 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3041 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3042 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3043 now exists, an signals an error.
3044 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3045 during macroexpansion for non-iteration variables as well. (reported
3046 by Bruno Haible for CMUCL)
3047 * bug fix: Cyclic structures and unprintable objects in compiler
3048 messages no longer cause errors. (reported by Bruno Haible)
3049 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3050 and READ-FROM-STRING all now return a primary value of NIL if
3051 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3052 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3053 (reported by Bruno Haible for CMUCL)
3054 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3055 do not designate a condition. (reported by Bruno Haible for
3057 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3058 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3059 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3060 permitting resolution in favour of any of the conflicting symbols.
3061 (reported by Bruno Haible for CMUCL)
3062 * bug fix: EQUAL compiler optimizations is less aggressive on
3063 strings which can potentially compare true despite having distinct
3064 specialized array element types.
3065 * bug fix: unit enumerations can be defined without dividing by
3066 zero. (thanks to Vincent Arkesteijn)
3067 * FORMAT compile-time argument count checking has been enhanced.
3068 (report from Bruno Haible for CMUCL)
3069 * a partial workaround for the bug 262: the compiler does not try to
3070 inline-expand a local function doing RETURN-FROM from a deleted
3071 BLOCK. (thanks to Peter Denno for the bug report and to David
3072 Wragg for the simple test case)
3073 * fixed some bugs revealed by Paul Dietz' test suite:
3074 ** RENAME-PACKAGE allows all package designators as new package
3076 ** constraint propagation and lambda variable substitution are
3077 more cautious in dealing with partially deleted code.
3078 ** compiler sometimes lost reoptimization passes.
3079 ** CERROR, given a condition as condition designator, passes its
3080 remaining arguments to the continue format control without
3082 ** Case-altering FORMAT directives work correctly on non-ASCII
3084 ** The REAL type specifier handles bounds outside the floating
3085 point ranges without signalling FLOATING-POINT-OVERFLOW.
3086 ** Functions with IR1-transformations can create intercomponent
3087 references to global functions.
3088 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3090 ** FORMAT ~R treats a nil value for its first parameter correctly.
3092 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3093 * enhancement: saving cores with foreign code loaded is now
3094 supported on x86/NetBSD and sparc/Linux in addition to the previously
3095 supported platforms.
3096 * bug fix: on some platforms repeated installations caused multiple
3097 copies of HTML documentation to be installed -- should not happen
3098 any more. (reported by Stefan Scholl)
3099 * bug fix: parsing self-recursive alien record types multiple times
3100 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3101 original patch by Helmut Eller for CMUCL)
3102 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3103 (thanks to Richard Kreuter)
3104 * bug fix: defining classes whose accessors are methods on existing
3105 generic functions in other (locked) packages no longer signals
3106 bogus package lock violations. (reported by François-René Rideau)
3107 * bug fix: special variables as DEFMETHOD parameters no longer have
3108 associated bogus type declarations. (reported by David Wragg and
3110 * bug fix: read-write consistency on streams of element-type
3111 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3112 * bug fix: redefiniton of the only method of a generic function with
3113 no DEFGENERIC no longer emits a full WARNING. In addition,
3114 redefinition of generic functions with no DEFGENERIC to an
3115 incompatible lambda list now signals an error. (thanks to Zach
3117 * bug fix: DEFGENERIC now works even when there's a function of the
3118 same name in an enclosing lexical environment. (thanks to Zach
3120 * fixed compiler failure, caused by instrumenting code during
3121 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3122 * optimization: added loop analysis and improved register allocation
3123 * fixed some bugs revealed by Paul Dietz' test suite:
3124 ** POSITION on displaced vectors with non-zero displacement
3125 returns the right answer.
3126 ** (SIMPLE-STRING) is a valid type specifier for sequence
3128 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3130 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3131 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3133 ** The justification version of the FORMAT ~< directive treats
3134 non-zero minpad parameter correctly.
3136 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3137 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3138 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3139 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3140 the supported interface.
3141 * new feature: Single-stepping of code compiled with DEBUG 2 or
3142 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3143 * new feature: saving cores with foreign code loaded is now
3144 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3145 Timothy Moore's work for CMUCL)
3146 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3147 parameters to * instead of NIL if no initform is supplied.
3148 (reported by Johan Bockgaard)
3149 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3150 correctly when FUNCALL appears as the car of the form. Note:
3151 despite this FUNCALL forms are not currently subject to
3152 compiler-macro expansion. (port of Raymond Toy's fix for the
3153 same from CMUCL, reported by Johan Bockgaard)
3154 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3155 (thanks for Teemu Kalvas)
3156 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3157 case instead of terminating the iteration (thanks for Julian
3158 Squires, Sean Champ and Raymond Toy)
3159 * bug fix: incorrect expansion of defgeneric that caused a style
3160 warning. (thanks for Zach Beane)
3161 * bug fix: slot accessor effective method computation works properly
3162 for classes with multiple non-standard applicable methods on
3163 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3164 * on x86 compiler supports stack allocation of results of LIST and
3165 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3166 CMUCL implementation by Gerd Moellmann)
3167 * fixed some bugs revealed by Paul Dietz' test suite:
3168 ** FORMAT strings with both the ~<~:;~> form of the justification
3169 directive and pretty-printing directives cause an error.
3171 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3172 * incompatible change: the internal functions
3173 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3174 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3175 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3176 instead of the old functions.
3177 * new feature: on platforms where "dladdr" is available foreign
3178 function names now appear in backtraces. (based on Helmut Eller's
3180 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3181 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3183 * documentation: ASDF manual is now distributed with SBCL.
3184 * bug fix: SBCL can now load its contributed modules with REQUIRE
3185 even if the system-provided entries have been removed from
3186 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3188 * bug fix: backtraces involving undefined functions or assembly
3189 routines are more informative. (thanks to Brian Downing)
3190 * bug fix: mutually referent alien structures now work correctly.
3191 (reported by Rick Taube)
3192 * bug fix: structures defined by WITH-ALIEN can be referred to
3193 within other definitions in the same WITH-ALIEN.
3194 * bug fix: division operators (MOD, TRUNCATE and the like) with
3195 constant zero divisors and integer dividends no longer generate
3197 * bug fix: provide default methods for INPUT-STREAM-P and
3198 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3199 * bug fix: improve the detection and resolution of MOP metacycles
3200 (where effective method computation depends on the generic function
3201 having its effective method computed). (reported by Bruno Haible)
3202 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3203 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3204 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3205 * bug fix: pathnames with relative directory components can be
3206 represented relative to default pathnames.
3207 * optimization: in taking the GCD of bignums, reduce the two bignums
3208 to approximately the same size (using Euclid's algorithm) before
3209 applying the more sophisticated binary GCD. (thanks to Juho
3211 * optimization: COUNT on bitvectors now operates word-at-a-time.
3212 * optimization: ASH with a positive, but not necessarily constant,
3213 (leftwards) shift, when in a modular context, is compiled to a
3215 * fixed some bugs revealed by Paul Dietz' test suite:
3216 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3217 if the corresponding argument is NIL.
3218 ** FORMAT directives accepting a minpad parameter treat negative
3220 ** literal commas as character parameters to FORMAT directives are
3222 ** literal spaces directly after ~<Newline> directives within a
3223 format-logical-block (~:< ~@:>) do not induce :FILL-style
3224 conditional newlines.
3225 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3226 as specified: it no longer includes conditional newlines).
3227 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3229 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3230 :PER-LINE-PREFIX argument does not evaluate to a string.
3232 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3233 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3234 the manual for details; for now, package locks can be disabled by
3235 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3236 if no major problems are found then it is likely that they will be
3237 compiled in unconditionally.
3238 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3239 unsupported operators on all platforms. To load a shared library
3240 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3241 object file, link it into a shared library outside of SBCL and
3242 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3244 * bug workaround: ROOM T and the GC were not working together
3245 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3246 reporting facility aren't preserved. That reporting has been
3247 disabled, so now until and unless someone figures out how to make it
3248 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3249 * minor incompatible change: as threatened around sbcl-0.8.0, the
3250 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3251 The symbols are also exported from SB-PCL for backwards
3252 compatibility, but more so than before SB-PCL should be treated as
3253 an implementation-internal package.
3254 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3256 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3257 It is known as of this release not to work on the Alpha, however.
3258 * fixed bug #167: errors signalled due to illegal syntax in method
3259 bodies are now more legible.
3260 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3261 designators and can hence be used with TYPEP.
3262 * fixed bug #333: CHECK-TYPE now ensures that the type error
3263 signalled, if any, has the right object to be accessed by
3264 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3265 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3266 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3268 * fixed bug #334: programmatic addition of slots using specialized
3269 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3270 and :ALLOCATION :CLASS slots.
3271 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3272 float exponents. (rereported by Peter Seibel)
3273 * fixed a bug: #\Space (and other whitespace characters) are no
3274 longer considered to be macro characters in standard syntax by
3275 GET-MACRO-CHARACTER.
3276 * fixed bug: initialization of condition class metaobjects no longer
3277 causes an instance of the condition to be created. (reported by
3279 * fixed bug: it is now possible to have slots such that
3280 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3281 description is neither :INSTANCE nor :CLASS.
3282 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3283 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3284 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3285 non-standard SLOT-DEFINITION-ALLOCATION values.
3286 * fixed bugs: various race conditions handling exiting threads.
3287 CL-PPCRE's thread torture test now passes.
3288 * fixed arguably-a-bug: GC time proportional to number of threads in
3289 system even when most of them are idle
3290 * optimization: improved performance of BIT and SBIT on bit-vectors.
3291 * .fasl file incompatibility: The fasl file version number has
3292 been incremented because of changes associated with package locks.
3294 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3295 * minor incompatible change: the system no longer provides
3296 optimization hints (conditions which are TYPEP
3297 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3298 mode; these hints are still emitted when higher SPEED optimization
3300 * new contrib module: a sampling profiler (profiling by statistical
3301 sampling, rather than by instrumenting functions) is available as
3302 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3303 * the behaviour of the standard function ED is now customizeable by
3304 third parties through a hook variable: see ED's documentation
3305 string for information on the protocol.
3306 * the compiler no longer emits efficiency notes for (FUNCALL X)
3307 when the type of X is uncertain under default optimization
3309 * fixed bug 276: mutating a binding of a specialized parameter to a
3310 method to something that is not TYPEP the specializer is now
3312 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3313 exhibit the required behaviour on the x86 platform. (thanks to
3314 Peter van Eynde, Eric Marsden and Bruno Haible)
3315 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3316 even for difficult arguments. (reported by Peter Graves)
3317 * fixed bug 141a: the backquote printer now descends quoted
3319 * fixed another bug in backquote printing: no more destructive
3320 modification of the form's list structure. (reported by Brian
3322 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3323 move between its address being taken and the call to
3324 interrupt_thread, fixing a crashing race condition.
3325 * the SB-POSIX contrib implementation has been adjusted so that it
3326 no longer exhibits ridiculously poor performance when constructing
3327 instances corresponding to C structs.
3329 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3330 * minor incompatible change: the sb-grovel contrib now treats C
3331 structures as alien (in the sense of SB-ALIEN) objects rather than
3332 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3333 has implications for memory management of client code
3334 (sb-grovel-returned objects must now be manually managed) and for
3335 type safety (alien objects now have full types).
3336 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3337 used to control emission of compiler diagnostics, rather than the
3338 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3339 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3340 quality should be considered deprecated.
3341 * install.sh now installs the user manual as well
3342 * (not quite a new documentable feature, but worth considering in
3343 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3344 beginnings of a semantically meaningful condition hierarchy is
3345 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3347 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3348 designator as the defaults argument.
3349 * fixed bug: Displaced arrays whose displaced-to array has become
3350 too small now cause ARRAY-DIMENSION to signal an error, providing
3351 for safer bounds-checking. (reported by Bruno Haible)
3352 * fixed bug: DEFCLASS slot definitions with identical :READER and
3353 :WRITER names now signal a reasonable error. (reported by Thomas
3355 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3357 * fixed bug: Invalid slot specification errors now print correctly.
3358 (thanks to Zach Beane)
3359 * fixed bug 320: Shared to local slot value transfers in class
3360 redefinitions now happen corrently from superclasses as
3361 well. (reported by Bruno Haible)
3362 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3364 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3365 improper lists correctly. (reported by Bruno Haible)
3366 * fixed bug 313: source-transform for <fun-name> was erroneously
3367 applied to a call of a value of a variable with name <fun-name>.
3368 (reported by Antonio Menezes Leitao)
3369 * fixed bug 307: The obsolete instance protocol ensures that
3370 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3371 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3372 remove dead unknown-values globs from the middle of the stack.
3373 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3374 easier to resume long computations after using *BREAK-ON-SIGNALS*
3375 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3376 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3377 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3378 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3379 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3380 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3382 * fixed a (fairly theoretical) bug in string printing: if
3383 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3384 does not have array-element-type equal to the most general string
3386 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3387 function name. (thanks to Nikodemus Siivola)
3388 * fixed bug: compile-time format string checker failed on
3389 non-closed ~{. (reported by Thomas F Burdick)
3390 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3391 don't warn on legal loop code involving more than one aggregate
3392 boolean. (thanks to Nikodemus Siivola)
3393 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3394 in keyword position to MAKE-PACKAGE was not being reported as
3396 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3397 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3399 * fixed bugs 280 and 312: the checking for multiple definitions in a
3400 file is less likely to become confused by uses of inline
3402 * fixed bug: the #S reader macro performs the keyword coercion
3403 specified for slot names. (reported by Kalle Niemitalo)
3404 * fixed bug: lambda lists may contain symbols whose names start with
3405 & but are not lambda-list-keywords; their occurrence triggers a
3407 * fixed bug 321: define-method-combination argument lambda lists do
3408 not cause invalid code to be generated when &optional or &aux
3409 variables have default values. (reported by Bruno Haible)
3410 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3411 have CLOS classes; this appears also to have fixed reported
3412 instability in stack exhaustion detection.
3413 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3414 MUFFLE-WARNING when no associated restart is present is now
3416 * optimization: rearranged the expansion of various defining macros
3417 so that each expands into only one top-level form in a
3418 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3420 * optimization: used a previously little-used slot in symbols to
3421 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3423 * fixed some bugs revealed by Paul Dietz' test suite:
3424 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3426 ** Fixed an optimization bug related to inheritance of initforms
3427 from local to shared slots.
3428 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3429 ** CAST optimizer forgot to flush argument derived type.
3430 ** print/read consistency on floats is now orders of magnitude
3431 more likely. (thanks also to Bruno Haible for a similar report
3433 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3434 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3435 for objects of type REAL. Make it so.
3436 ** SXHASH is specified (infelicitously) to respect similarity,
3437 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3438 it so. (thanks to Markus Ziegler)
3439 ** on the Alpha, the compiler succeeds in compiling functions
3440 returning a known number of arguments greater than 63.
3441 ** fixed handling of invalid NIL arguments in keyword position
3443 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3445 ** provided a readably-printable representation for RANDOM-STATE
3447 ** ensured that pathnames, where they have a namestring, always
3448 print using #P"..." syntax.
3450 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3451 * Support for the forthcoming 2.0 version of the NetBSD kernel
3452 running on x86 hardware has been added. (thanks to Perry
3453 E. Metzger most immediately, and others for their past work)
3454 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3455 current release version; SBCL's OpenBSD support had been broken
3456 since about the time of OpenBSD's switch to ELF binary format.)
3457 * [placeholder for DX summary]
3458 ** user code with &REST lists declared dynamic-extent, under high
3459 speed or space and low safety and debug optimization policy.
3460 * The manual has been converted to Texinfo format and the debugger
3461 chapter from the cmucl manual has been added.
3462 * A facility has been added to extract documentation strings from
3463 sbcl and store them as Texinfo-formatted snippets for inclusion in
3464 the manual (via Texinfo's @include directive)
3465 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3466 the test case to Dave Roberts)
3467 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3468 pointers. (reported by Sean Ross)
3469 * bug fix: PROFILE output is printed nicely even for large numerical
3470 values. (thanks to Zach Beane)
3471 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3472 greater than 32 handle EOF correctly.
3473 * bug fix: on X86 an immediate argument of the IMUL instruction is
3474 correctly printed in disassembly. (thanks to Lutz Euler)
3475 * bug fix: class slots in redefined classes preserve their old
3476 values. (thanks to Bruno Haible and Nikodemus Siivola)
3477 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3478 succeeds. (reported by Marco Baringer)
3479 * fixed some bugs revealed by Paul Dietz' test suite:
3480 ** READ-SEQUENCE now works on ECHO-STREAMs.
3481 ** RATIONALIZE works more according to its specification. (thanks
3484 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3485 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3486 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3487 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3488 should matter to you only if you rebind the printer control
3489 variables and then find you want different bindings in the
3490 debugger than in the ordinary execution of your program.)
3491 * The runtime build system has been tweaked to support building
3492 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3493 assembler and linker. (thanks to Nikodemus Siivola)
3494 * Unbound, undefined, undeclared variables now trigger full
3495 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3496 more often programmer error than deliberate exploitation of undefined
3498 * optimization: the hash algorithm for strings has changed to one
3499 that is less vulnerable to spurious collisions. (thanks to Juho
3501 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3502 needless bounds checking. (thanks to Juho Snellman)
3503 * optimization: implemented multiplication as a modular
3504 (UNSIGNED-BYTE 32) operation on the PPC backend.
3505 * fixed some bugs revealed by Paul Dietz' test suite:
3506 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3508 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3509 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3510 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3512 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3514 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3516 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3517 their output stream on EOF from read.
3518 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3519 have been read to end-of-file.
3520 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3522 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3523 description of determination of which consecutive characters
3525 ** Printing the "Space" character with escaping on now yields "#\\ ",
3526 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3527 ** Reading floating-point numbers with *READ-BASE* set to a number
3528 less than 10 works correctly.
3529 ** Reading floating-point numbers with *READ-BASE* set to a number
3530 more than 10 works correctly.
3531 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3532 the readtable currently in effect.
3534 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3535 * minor incompatible change: parsing of namestrings on a physical
3536 (Unix) host has changed; numbers after the final #\. in a
3537 namestring are no longer interpreted as a version field. This is
3538 intented to be largely invisible to the user, except that the
3539 meaning of the namestring "*.*.*" has changed: it now refers to a
3540 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3541 should usually be replaced by
3542 (make-pathname :name :wild :type :wild :version :wild)
3543 with the added benefit that this is more likely to be portable.
3544 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3545 option to OPEN now signals an error if the file being opened
3546 exists; this may have an impact on existing code.
3547 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3548 signals received, on the PowerPC platforms (both Linux and
3549 Darwin). (thanks to Pierre Mai for pointing out the location of
3551 * several fixes on OS X: The system now builds and runs cleanly on
3552 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3553 (thanks to Brian Mastenbrook)
3554 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3555 second-resolution: integer multiples of 1/3600 between -24 and 24.
3556 (thanks to Vincent Arkesteijn)
3557 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3558 type when called with 1 argument; PEEK-CHAR checked type of
3559 PEEK-TYPE only after having read first character from a
3560 stream. (reported by Peter Graves)
3561 * bug fix: the garbage collector now has much better locality
3562 behaviour, and in particular no longer treats all memory as being
3563 exhausted when many small objects point to each other in a deeply
3565 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3566 recognized as being TYPEP their class.
3567 * bug fix: the PUSHNEW documentation string has been corrected.
3568 (thanks to Vincent Arkesteijn)
3569 * bug fix: defaulting of the value for the last of an atypically
3570 large number of multiple values being bound was not being
3571 performed correctly on the Alpha or PPC platforms
3572 * optimization: implemented multiplication as a modular
3573 (UNSIGNED-BYTE 32) operation on the x86 backend.
3574 * optimization: SEARCH on simple-base-strings can now be open-coded.
3575 (see also contrib/compiler-extras.lisp for inspiration for
3576 teaching the compiler about the Boyer-Moore algorithm).
3577 * value, returned by MAX (and MIN) called with several EQUALP, but
3578 not EQL, arguments now does not depend on compiler settings.
3579 * fixed some bugs revealed by Paul Dietz' test suite:
3580 ** in stack analysis liveness information is propagated from
3581 non-local entry points.
3582 ** pathwise CAST removing failed when the CAST node did not start
3584 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3585 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3587 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3588 host is already defined.
3589 ** RENAME-FILE works on streams instead of signalling an internal
3591 ** PEEK-CHAR uses the current readtable when determining whether
3592 or not a character is whitespace.
3593 ** MERGE-PATHNAMES handles the case when the pathname does not
3594 specify a name while the default-pathname specifies a version.
3595 ** Pathnames now stand a better chance of respecting print/read
3597 ** Attempting to use standardized file system operators with a
3598 pathname with invalid :DIRECTORY components signals a
3600 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3602 ** DIRECTORY on logical pathnames is more correct.
3603 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3604 signal a TYPE-ERROR if their argument is not a stream.
3605 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3606 designator argument does not designate a stream.
3607 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3608 examining the synonym.
3609 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3611 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3612 element-type larger than ([UN]SIGNED-BYTE 32).
3614 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3615 * When built with the :SB-FUTEX feature, threaded builds now take
3616 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3617 for faster/more reliable mutex and condition variable support.
3618 * Incompatible change (but one you probably shouldn't have been using
3619 anyway): the interface and code for arbitrating between multiple
3620 threads in the same user session has been redesigned.
3621 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3622 error when called without an explicit environment argument.
3623 (thanks to Nikodemus Siivola)
3624 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3625 confused about their position. (thanks to Adam Warner and Gerd
3627 * bug fix: Pretty printing backquoted forms with unquotations in the
3628 argument list position of various code constructs such as LAMBDA
3629 now works correctly. (reported by Paul Dietz)
3630 * bug fix: Pretty printing unquotations no longer loses all
3631 stream position information.
3632 * optimization: performance of string output streams is now less
3633 poor for multiple small sequence writes.
3634 * optimization: performance of CSUBTYPEP in the presence of complex
3635 expressions involving CONS and NOT many times has been improved.
3636 (reported by Paul Dietz)
3637 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3639 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3640 streams for the REPL, for the debugger, and so on. (thanks to
3642 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3643 * fixed some bugs revealed by Paul Dietz' test suite:
3644 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3645 is ignored if it is too small, rather than propagating through
3646 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3647 ** extremely complex negations of CONS types were not being
3648 sufficiently canonicalized, leading to inconsistencies in
3650 ** VALUES tranformer lost derived type.
3652 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3653 * fixed a bootstrapping bug: the build process no longer assumes
3654 that the various BOOLE-related constants have the same value in
3655 host and target lisps. (noted by Paul Dietz' test suite on an
3656 SBCL binary built from CLISP)
3657 * The system can now be dynamically linked on the MIPS platform,
3658 which enables dynamic loading of foreign code from Lisp. (thanks
3659 to Ralf Baechle for discussions on the MIPS ABI)
3660 * The system now records debugging information for its own source
3661 files in a filesystem-position-independent manner, relative to
3662 the "SYS" logical host.
3663 * fixed a compiler bug: MV-LET convertion did not check references
3664 to the "max args" entry point. (reported by Brian Downing)
3665 * tweaked disassembly notes to be less confident about proclaiming
3666 some instruction as an LRA. (thanks to Brian Downing)
3667 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3668 now each have their own history, command character, and other
3669 characteristics. (thanks to David Lichteblau)
3670 * fixed some bugs revealed by Paul Dietz' test suite:
3671 ** compiler failure in compiling LOGAND expressions including a
3673 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3674 shift greater than 32.
3675 ** FLUSH-DEST did not mark blocks for type check regeneration.
3676 ** HANDLER-CASE failed to accept declarations in handler clauses
3677 in some circumstances.
3679 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3680 * New code in contrib/sb-introspect (still probably not entirely
3681 stable yet) provides some support for smart Lisp development
3682 environments like SLIME.
3683 * The conditions signalled for errors occurring when loading .fasl
3684 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3685 in a way which should help ASDF recover gracefully.
3686 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3687 stuff has been cleaned up. If you code contrib/ stuff, this might
3688 affect you, and you can look at contrib/README, contrib/STANDARDS,
3689 and/or the 0.8.4.27 diff to check.
3690 * In full calls the compiler now does not generate checks for declared
3691 argument types for all arguments.
3692 * various threading fixes
3693 ** and some experimental patches which didn't make it into
3694 the main tree for this release, but which are shipped in
3695 contrib/experimental-thread.patch as a possible fix for some
3696 failures (deadlock, spinning...) in GC-intensive multithreaded
3698 * fixed PPC build problem (source code incompatibility of different
3699 library versions): added offsetof() hackery which attempts to divine
3700 where glibc maintainers put uc_mcontext today
3701 * fixed bug 282: compiler does not trust type assertions while passing
3702 arguments to a full call.
3703 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3704 &OPTIONAL VALUES type parameter.
3705 * fix bug 214: algorithm for noting rejected templates is now more
3706 similar to that of template seletion. (also reported by rydis on
3708 * fixed bug 141b: printing backquoted information readably and prettily
3709 inserts a space where necessary.
3710 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3711 (CHARACTER 10) are now reported as errors, rather than propagated
3712 as unknown types. (reported by piso on #lisp)
3713 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3714 with values NIL and :ERROR. (thanks to Milan Zamazal)
3715 * fixed bug 191c: CLOS now does proper keyword argument checking as
3716 described in CLHS 7.6.5 and 7.6.5.1.
3717 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3718 longer raise an error; further, using a list as a for-as-arithmetic
3719 counter now raises a meaningful error.
3720 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3721 now understood by sequence creation functions such as MAKE-SEQUENCE
3723 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3724 a STRING-INPUT-STREAM.
3725 * compiler enhancement: SIGNUM is now better able to derive the type
3727 * type declarations inside WITH-SLOTS are checked. (reported by
3729 * fixed some bugs revealed by Paul Dietz' test suite:
3730 ** incorrect optimization of TRUNCATE for a positive first
3731 argument and negative second.
3732 ** compiler failure in let-convertion during flushing dead code.
3733 ** compiler failure while deriving type of TRUNCATE on an
3734 interval, containing 0.
3735 ** ASH of a negative bignum by a negative bignum count now returns
3737 ** intersection of CONS types now canonicalizes properly, fixing
3738 inconsistencies in SUBTYPEP.
3740 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3741 * incompatible change: The --disable-debugger command line
3742 option now clobbers the debugger at a more fundamental
3743 level, by redefining #'INVOKE-DEBUGGER instead of by
3744 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3745 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3746 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3747 enter the debugger REPL and then suffer recursive errors
3748 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3749 while under the new system, BREAK in --disable-debugger mode
3750 terminates the system just as an unhandled error would.
3751 * fixed compiler performance when processing loops with a step >1;
3752 * bug fix: DOCUMENTATION now retrieves generic function
3753 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3754 support has been systematized, and now supports the methods
3755 specified by ANSI, along with a default method and a method for
3756 slot documentation. (reported by Nathan Froyd)
3757 * bug fix: effective methods associated with a generic function are
3758 no longer cached over a change of that generic function's method
3759 combination. (reported by Andreas Fuchs)
3760 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3761 names a non-existent directory. (thanks to Andreas Fuchs)
3762 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3763 the PPC platform, lead to stack corruption; this has been fixed.
3764 (reported by Rainer Joswig)
3765 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3766 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3767 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3768 arithmetic in general, is now much more reliable on the PPC
3770 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3771 platform now returns the right answer.
3772 * optimization: restored some effective method precomputation in
3773 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3774 precomputation is now tunable.
3775 * optimization: compiler-internal data structure use has been
3776 reviewed, and changes have been made that should improve the
3777 performance of the compiler by about 20%.
3778 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3779 simple-base-strings and simple-bit-vectors is improved.
3780 * optimization: the optimization of 32-bit logical and arithmetic
3781 functions introduced in version 0.8.3 on the x86 has been
3782 implemented on the mips, ppc and sparc platforms; an
3783 implementation of the same facility, but for 64-bit arithmetic,
3784 has been added for the alpha.
3785 * microoptimization: the compiler is better able to make use of the
3786 x86 LEA instruction for multiplication by constants.
3787 * bug fix: in some situations compiler did not report usage of
3788 generic arithmetic in (SPEED 3) policy.
3789 * bug 145b fix: compiler used wrong type specifier while converting
3790 MEMBER-types to numeric.
3791 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3793 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3794 index argument now works properly on the Alpha platform.
3795 * bug fix: floating point exception treatment on the Alpha platform
3797 * bug fix: FILE-POSITION works much better on string input and
3798 output streams. (thanks to Nikodemus Siivola)
3799 * bug fix: many threading/garbage collection symptoms sorted.
3800 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3801 might be pseudo-atomic.
3802 * internal change: Stopping for GC is now done with signals not
3803 ptrace. GC is now done in whichever thread wanted it, instead of
3805 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3807 * bug fix: result form in DO is not contained in the implicit
3809 * incompatible change: ICR structure is changed; the value part of
3810 CONTINUATION is now called LVAR; corresponding functions are
3811 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3812 * added type deriver for ISQRT (thanks to Robert E. Brown).
3813 * bug fix: better support for loading from the command line when an
3814 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3816 * fixed some bugs revealed by Paul Dietz' test suite:
3817 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3818 ** ROUND and FROUND now give the right answer when given very
3819 small float arguments.
3820 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3822 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3823 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3824 ** LCM should return a non-negative integer.
3825 ** PARSE-INTEGER returned the index of a terminator instead of the
3826 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3827 ** PARSE-INTEGER returned an incorrect index being applied to a
3829 ** LCM with two arguments of 0 returns 0 rather than signalling
3831 ** unsigned addition of a 32-bit constant with the high bit set no
3832 longer causes an internal compiler error on the x86.
3833 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3834 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3835 with negative last argument.
3836 ** byte specifiers with zero size and position no longer cause
3837 an error during type derivation.
3838 ** bignum multiplication on the Alpha platform now returns the
3840 * porting: The system now builds on SuSE AMD64, although it still
3841 generates a 32-bit binary.
3842 * .fasl file incompatibility: The fasl file version number has
3843 been incremented (because of the changes to internal compiler
3844 data structures referred to above).
3846 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3847 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3848 more accurately, on the Darwin kernel running on PowerPC hardware.
3849 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3850 * Compiler code deletion notes now signal a condition of type
3851 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3852 an associated MUFFLE-WARNING restart.
3853 * The compiler now performs limited argument count validation of
3854 constant format strings in FORMAT, and where appropriate in ERROR,
3855 CERROR and WARN. (thanks to Gerd Moellmann)
3856 * New ASDF-INSTALL contrib can be used for automatic download and
3857 installation of third-party Lisp code from CCLAN or other sites
3859 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3860 which forces another thread to execute a function supplied by the
3862 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3863 now accept and act upon their :ELEMENT-TYPE keyword argument.
3864 (reported by Martin Atzmueller, Edi Weitz)
3865 * bug fix: FILE-POSITION now accepts position designators up to
3866 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3867 is the greater. (thanks to Patrik Nordebo)
3868 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3869 Kalle Olavi Niemitalo)
3870 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3871 printable. (reported by Eric Marsden)
3872 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3873 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3874 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3875 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3876 (thanks to Stig Sandoe)
3877 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3878 UNREAD-CHAR now correctly includes the unread character in the
3879 target sequence. (thanks to Gerd Moellmann)
3880 * bug fix in threaded builds: the system can now be suspended and
3881 resumed by shell job control with minimal disruption.
3882 * bug fixes in times and timezones >2038AD
3883 * better handling of "where is GNU make?" problem in build scripts
3884 (thanks to Nikodemus Siivola)
3885 * new optimization: inside a named function any reference to a
3886 function with the same name is considered to be a self-reference;
3887 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3888 optimization quality.
3889 * new optimization on x86: logical functions and + now have
3890 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3891 used when the result is truncated to 32 bits.
3892 * VALUES declaration is partially enabled.
3893 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3894 * fixed some bugs revealed by Paul Dietz' test suite:
3895 ** The system now obeys the constraint imposed by
3896 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3897 types form a lattice under type intersection.
3898 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3899 ** ASSOC now ignores NIL elements in an alist.
3900 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3901 and (1+ MOST-POSITIVE-FIXNUM) answers.
3902 ** The addition of a method with invalid qualifiers to a generic
3903 function does not cause an error to be signalled immediately;
3904 a warning is signalled, and the error is generated only on
3905 calling the generic function.
3906 * changed .fasl file version number, in part to add type codes for
3907 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3908 obscure ANSI requirements
3910 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3911 * fixed bug 148: failure to inline-expand a local function left
3912 garbage, confusing the compiler.
3913 * fixed bugs 3cd: structure slot readers perform type check if the
3914 slot can have an invalid value (i.e. it is either not initialized
3915 or can be written with a less specific slot writer).
3916 * bug fix: the compiler now traps array references to elements off
3917 the end of an array; previously, the bounds checking in some
3918 circumstances could go off-by-one.
3919 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3921 * type declarations for array element types now obey the description
3922 on the CLHS page "Declaration TYPE", as per discussions on
3923 sbcl-help around 2003-05-08. This means that a declaration
3924 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3925 declaration, all references to BAR will be asserted or assumed
3926 (with THE, so dependent on compiler policy) to involve objects of
3927 type FOO. Note that no such declaration is implied in
3928 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3929 * declared types of functions from the "Conditions"
3930 chapter. (reported by Paul Dietz)
3931 * bug fix: CERROR accepts a function as its first argument.
3932 * bug fix: NTH an NTHCDR accept a bignum as index
3933 arguments. (reported by Adam Warner)
3934 * optimization: character compare routines now optimize comparing
3935 against a constant character. (reported by Gilbert Baumann)
3936 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3937 argument now works properly on the MIPS platform.
3938 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3939 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3940 declared to have a functional type, does not cause an error
3942 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3943 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3944 * fixed bug: if last continuation of a deleted block has a
3945 destination, this destination should be deleted too. (reported by
3947 * fixed a bug in the bootstrap process: the host compiler's values
3948 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3949 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3950 test case from Patrik Nordebo)
3951 * improved the ability of the disassembler on the PPC platform to
3952 provide helpful disassembly notes.
3953 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3954 the class in more cases than previously.
3955 * bug fix: FILE-POSITION now understands :START and :END for
3956 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3957 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3958 8) data. (thanks to David Lichteblau)
3959 * bug fix: it is possible to add a method to a generic function
3960 without lambda list.
3961 * bug fix: reader failed to signal END-OF-FILE inside an
3962 object representation. (reported by Nikodemus Siivola)
3963 * fixed some bugs revealed by Paul Dietz' test suite:
3964 ** LAST and [N]BUTLAST should accept a bignum.
3965 ** condition slot accessors are methods.
3966 ** (VECTOR NIL) is a subtype of STRING.
3968 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3969 * minor incompatible change: some nonsensical specialized lambda
3970 lists (used in DEFMETHOD) which were previously ignored now signal
3972 * minor incompatible change: the system is now aware of the types of
3973 variables in the COMMON-LISP package, and will signal errors for
3974 most violations of these type constraints (where previously they
3975 were silently accepted).
3976 * minor incompatible change: COMPILE-FILE now uses the freedom
3977 afforded (ANSI 3.2.2.3) to use derived function types for
3978 functions defined in the same file. This also permits the system
3979 to warn on static type mismatches and function
3980 redefinition. (Currently it does not work with high DEBUG level.)
3981 * minor incompatible change: VALUES declaration is disabled.
3982 * When issuing notes, the compiler now signals a condition of type
3983 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3984 restart for use in user handlers. It is expected that the
3985 COMPILER-NOTE condition will eventually become a condition
3986 supertype to a hierarchy of note types, which will then be
3987 handleable in a similar fashion. However, at the moment, no such
3988 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3989 but it's an implementation detail, not a classification for the
3991 * Changes in type checking closed the following bugs:
3992 ** type checking of unused values (192b, 194d, 203);
3993 ** template selection based on unsafe type assertions (192c, 236);
3994 ** type checking in branches (194bc).
3995 * A short form of VALUES type specifier has ANSI meaning (it has
3996 increased the number of situations when SBCL cannot perform type
3998 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3999 keywords or constants is permissible.
4000 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4001 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4002 classes. (thanks to Antonio Martinez)
4003 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4004 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4005 argument to a pretty-print stream. Instead, it leaves any such
4006 operations to DESCRIBE-OBJECT methods.
4007 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4009 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4010 lambda lists. (thanks to David Lichteblau)
4011 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4012 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4013 (thanks to Gerd Moellmann)
4014 * fixed bug 246: increased compilation speed of long
4015 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4017 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4019 * DEFCONSTANT now throws a condition of type
4020 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4021 constant to a non-EQL value; CONTINUE and ABORT restarts
4022 respectively change and preserve the value.
4023 * fixed bug 63: The code walker, part of the implementation of CLOS,
4024 is now better at handling symbol macros.
4025 * bug fix: There is no longer an internal implementation type named
4026 CL:LENGTH. (reported by Raymond Toy)
4027 * bug fix: In macro-like defining macros/special operators the
4028 implicit block does not enclose the lambda list.
4029 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4030 enclosed in parentheses) are not suitable as type specifiers, and
4031 their use properly signals an error now.
4032 * bug fix: An argument count mismatch for a type specifier in code
4033 being compiled no longer causes an unhandled error at compile
4034 time, but signals a compile-time warning.
4035 * fixed simple vector readable printing
4036 * bug fix: DESCRIBE takes more care over whether the class
4037 precedence list slot of a class is bound before accessing it.
4038 (reported by Markus Krummenacker)
4039 * bug fix: FORMATTER can successfully compile pretty-printer format
4040 strings which use variants of the ~* directive inside.
4041 * bug fix: SEARCH now applies its TEST predicate to the elements of
4042 the arguments in the correct order. (thanks to Wolfhard Buss)
4043 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4044 in type inference. (thanks to Robert E. Brown)
4045 * bug fix: Reading in symbols with an explicit package name of ""
4046 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4047 * fixed some bugs revealed by Paul Dietz' test suite:
4048 ** NIL is now allowed as a structure slot name.
4049 ** Arbitrary numbers, not just REALs, are allowed in certain
4050 circumstances in LOOP for-as-arithmetic clauses.
4051 ** Multiple class redefinitions before slot access no longer
4052 causes a type error.
4053 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4054 association between the name and a class.
4055 ** Generic functions with non-standard method-combination and over
4056 five methods all of which return constants no longer return NIL
4057 after the first few invocations. (thanks to Gerd Moellmann)
4058 ** CALL-NEXT-METHOD with no arguments now passes the original
4059 values of the arguments, even in the presence of assignment.
4060 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4062 ** DISASSEMBLE works with closures and funcallable instances.
4063 ** ADD-METHOD now returns the generic function, not the new method.
4064 ** FIND-METHOD signals an error if the lengths of the specializers
4065 is incompatible with the generic function, even if the ERRORP
4067 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4068 which its argument is a member.
4069 ** DEFCLASS only redefines the class named by its class-name
4070 argument if that name is the proper name of the class;
4071 otherwise, it creates a new class.
4072 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4073 of the UNBOUND-SLOT condition to the name of the slot.
4074 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4075 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4076 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4077 SLOT-MAKUNBOUND in the specified fashion.
4079 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4080 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4081 cross-compilation host. As a consequence, we can now bootstrap our
4082 way up to SBCL starting with a bare gcc toolchain and human-readable
4083 source code (first the source to CLISP, then the source to SBCL).
4084 * A contributed module containing a partial implementation of the
4085 simple-streams interface has been included. (thanks to Rudi
4087 * A contributed module implementing the RFC1321 Message Digest
4088 Algorithm, known as MD5, has been included.
4089 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4090 no longer has any effect, as the code controlled by this feature
4091 has been deleted. (As far as we know, no-one has ever built using
4092 this feature, and its semantics were confused in any case).
4093 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4094 work on conditions (as required by the ANSI specification),
4095 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4096 expected behaviour on conditions. Users should note, however,
4097 that such behaviour is not required by the ANSI specification,
4098 and so use of this behaviour may render their code unportable.
4099 * fixed some bugs revealed by Paul Dietz' test suite:
4100 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4102 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4103 ** SXHASH on condition objects no longer returns NIL.
4104 ** :ALLOCATION :CLASS slots are better treated; their values are
4105 updated on class redefinition, and initforms inherited from
4106 superclasses are applied.
4107 ** REMOVE-METHOD returns its generic function argument even when
4108 no method was removed.
4109 ** SHARED-INITIALIZE now initializes the values of the requested
4110 slots, including those with :ALLOCATION :CLASS.
4111 ** ALLOCATE-INSTANCE now works on structure classes defined via
4112 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4114 ** SLOT-EXISTS-P now works on conditions, as well as structures
4116 ** MAKE-LOAD-FORM now has the required methods on
4117 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4118 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4119 keyword, and now implements the SLOT-NAMES argument.
4120 ** methods with &OPTIONAL arguments no longer allow too many
4121 arguments to be passed in the call without error.
4122 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4123 option is consistent with the required arguments of the generic
4124 function lambda list.
4125 * bug fix: REQUIRE accepts a string designator. (Thanks to
4127 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4128 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4129 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4130 * bug fix: The compiler now checks for duplicated variables in macro
4132 * bug fix: SETQ on globals returns the correct value.
4133 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4134 not a COMPILER-ERROR (followed by some other strange error on
4135 choosing the CONTINUE restart).
4136 * bug fix: make.sh and friends are now more consistent in the way that
4137 they look for GNU "make".
4139 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4140 * experimental native threads support (on x86 Linux >=2.4 only).
4141 This is not compiled in by default: you need to add :SB-THREAD to
4142 the target features. See the "Beyond ANSI" chapter of the manual
4144 * fix for longstanding nonANSIism: The old distinction between
4145 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4146 The return value from CL:FIND-CLASS is now a CLOS class, and
4147 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4148 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4149 * An interface to the MetaObject Protocol, as described in Kiczales,
4150 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4151 MIT Press, 1991, is available from the SB-MOP package.
4152 * incompatible change: the SB-PCL package should now be considered
4153 a private implementation detail, and no longer a semi-private MOP
4155 * minor incompatible change: due to rearrangement for threads, the
4156 control stack and binding stack are now allocated at arbitrary
4157 addresses instead of being hardcoded per-port. Users affected by
4158 this probably have to be doing advanced things with shared
4159 libraries, and will know who they are.
4160 * minor incompatible change: Previously, all --eval forms used were
4161 processed with READ before any of them were processed with EVAL.
4162 Now each --eval form is processed with both READ and EVAL before
4163 the next --eval form is processed. (Thus package operations like
4164 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4165 work as the user might reasonably expect.)
4166 * minor incompatible change: *STANDARD-INPUT* is now only an
4167 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4169 * minor incompatible change: Y-OR-N-P is now character-oriented,
4170 not line oriented. Also, YES-OR-NO-P now works without errors.
4171 (thanks to Antonio Martinez)
4172 * sb-aclrepl module improvements: an integrated inspector, added
4173 repl features, and a bug fix to :trace command.
4174 * Known functions, which cannot be open coded by the backend, are
4175 considered to be able to check types of their arguments. (fixing
4176 a bug report by Nathan J. Froyd)
4177 * fixed a bug in computing method discriminating functions: It is
4178 now possible to define methods specialized on classes which have
4179 forward-referenced superclasses. (thanks to Gerd Moellmann)
4180 * fixed evaluation order in optional entries (reported by Gilbert
4182 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4183 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4184 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4185 required-by-AMOP NAME argument, as well as CLASS and
4186 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4187 * fixed bug 20: DEFMETHOD can define methods using names that are
4188 not the proper names of classes to designate class specializers.
4189 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4190 Unix file descriptors, instead of blowing up. (thanks to Antonio
4192 * Garbage collection refactoring: user-visible change is that a
4193 call to the GC function during WITHOUT-GCING will not do garbage
4194 collection until the end of the WITHOUT-GCING. If you were doing
4195 this you were probably losing anyway.
4196 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4197 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4198 TYPEP the latter but not the former.
4199 * The compiler issues a full WARNING for calls to undefined functions
4200 with names from the CL package.
4201 * MAP-INTO for a vector destination is open coded. (reported by
4202 Brian Downing on c.l.l)
4203 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4204 documentation string.
4205 * fixed some bugs revealed by Paul Dietz' test suite:
4206 ** COPY-ALIST now signals an error if its argument is a dotted
4208 ** Condition slots are now accessed more correctly in the presence
4209 of multiple initargs for a given slot.
4210 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4211 exclude restarts of the same name associated with a different
4213 ** DEFCLASS of forward-referenced classes with another
4214 forward-referenced class in the superclasses list no longer
4216 ** Condition slots are now initialized once each, not multiple
4217 times. (thanks to Gerd Moellmann)
4218 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4220 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4221 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4222 arguments contain duplicated elements.
4223 ** RESTART-CASE understands local macros.
4224 ** RESTART-CASE associates exactly its own restarts with a condition.
4225 ** ENDP in safe mode checks its argument to be of type LIST.
4226 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4227 in question is unbound.
4228 ** Optimized MAKE-INSTANCE functions no longer cause internal
4229 assertion failures in the presence of duplicate initargs.
4230 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4231 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4232 propagated even in the ctor optimized implementation of
4234 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4236 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4237 * a better implementation of SXHASH on (simple) bit vectors,
4238 measured both in execution speed and in distribution of results
4239 over the positive fixnums, has been installed. Likewise, a better
4240 implementation of EQUAL for simple bit vectors is now available.
4241 * fixed CEILING optimization for a divisor of form 2^k.
4242 * fixed bug 240 (emitting extra style warnings "using the lexical
4243 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4244 by Antonio Martinez)
4245 * fixed SXHASH, giving different results for NIL depending on type
4246 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4247 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4248 variable. (found by Rolf Wester)
4249 * SBCL does not ignore type declarations for special
4250 variables. (reported by rif on c.l.l 2003-03-05)
4251 * some bug fixes in contrib/sb-aclrepl/
4252 * fixed some bugs revealed by Paul Dietz' test suite:
4253 ** a bug in the CONS type specifier, whereby the CAR and CDR
4254 types got intertwined, has been fixed;
4255 ** the type system is now able to reason about the interaction
4256 between INTEGER and RATIO types more completely;
4257 ** APPEND, [N]REVERSE and NRECONC check that those their
4258 arguments, which must be proper lists, are really so;
4259 ** An array specialized to be unable to hold elements has been
4260 implemented, as required -- yes, really -- by ANSI;
4261 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4262 on malformed property lists;
4264 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4265 * incompatible packaging change: in line with Unix convention,
4266 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4267 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4268 * REQUIRE and PROVIDE are now optionally capable of doing something
4269 useful. See the documentation string for REQUIRE.
4270 * infrastructure for a managed SBCL contrib system: contributed
4271 modules in this release include:
4272 ** the ASDF system definition facility;
4273 ** an interface to the BSD Sockets API;
4274 ** an ACL-like convenience interface to the repl;
4275 (thanks to Kevin Rosenberg)
4276 ** an implementation of ROTATE-BYTE, with efficient implementation
4278 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4279 gives a closer approximation to the right answer than previously.
4280 (thanks to Raymond Toy)
4281 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4282 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4283 optional environment arguments, as required by ANSI.
4284 * fixed bugs in other functions taking environment objects, allowing
4285 calls with an explicit NIL environment argument to be compiled
4287 * fixed bug 228: primary return values from
4288 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4289 COMPILE or FUNCTION.
4290 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4291 :TYPE will no longer signal errors on innocuous objects.
4292 * fixed bug 231b: SETQ is better at respecting type declarations in
4293 the lexical environment.
4294 * fixed a bug in DEFCLASS: classes named by symbols with no or
4295 unprintable packages can now be defined.
4296 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4297 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4298 * fixed compiler failure related to checking types of functions.
4299 (reported by Robert E. Brown)
4300 * the compiler is now much more consistent in its error-checking
4301 treatment of bounding index arguments to sequence functions: in
4302 (SAFETY 3) code, errors will be signalled in almost all cases if
4303 invalid sequence bounding indices are passed to functions defined
4304 by ANSI to operate on sequences.
4305 * fixed a bug in the build procedure: documentation of SBCL-specific
4306 packages is now preserved and available in the final Lisp image.
4307 * lifted FDEFINITION lookup out of loops in the implementation of
4308 many list operations. (thanks to Robert E. Brown)
4309 * fixed a bug in the reader: the #n# reader macro now works for
4310 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4311 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4312 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4313 E. Brown and Tony Martinez respectively)
4314 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4315 SLOT-BOUNDP: in particular, it is now able to optimize them much
4316 better, and is now not vulnerable to having packages renamed.
4317 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4318 always called when a slot is not present in an instance. (thanks
4320 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4321 longer signal an error on unreading a character following EOF on
4322 the previous constituent stream. (thanks to Tony Martinez)
4323 * fixed some bugs revealed by Paul Dietz' test suite:
4324 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4325 not just nonnegative fixnums;
4326 ** the logical bit-array operators such as BIT-AND now accept an
4327 explicit NIL for their "opt-arg" argument (to indicate a
4328 freshly-consed result bit-array);
4329 ** ELT now signals an error on an invalid sequence index in safe
4331 ** the type system is now cleverer about negations of numeric
4332 types, and consequently understands the BIGNUM and RATIO types
4334 ** the type system is now cleverer about the interaction between
4335 INTEGER and RATIO types: while bugs still remain, many more
4336 cases are accurately computed;
4337 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4338 if it is in the last clause;
4339 ** CONSTANTLY now correctly returns a side-effect-free function in
4341 ** DECLARE is no longer treated as a special-operator; in
4342 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4343 * incremented fasl file version number due to the change in the
4344 DEFSTRUCT-SLOT-DESCRIPTION structure.
4346 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4347 * minor incompatible change: code processed by the "interpreter" or
4348 EVAL now has a compilation optimization policy of (DEBUG 2)
4349 (changed from (DEBUG 1)) to improve debuggability of interactive
4350 development, and to allow the use of the debug RETURN command in
4352 * an experimental implementation of the RETURN command for the
4353 debugger has been included. (thanks to Frederik Kuivinen)
4354 * fixed bug 62: constraints were not propagated into a loop.
4355 * fixed bug in embedded calls of SORT (reported and investigated by
4357 * fixed some bugs revealed by Paul Dietz' test suite:
4358 ** printing and reading of arrays with some dimensions having
4359 length 0 (thanks to Gerd Moellmann);
4360 ** BOA constructor with &AUX argument without a default value does
4361 not cause a type error;
4362 ** CONSTANTP now returns true for all self-evaluating objects.
4364 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4365 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4366 accessors that are related by inheritance, as specified in the
4367 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4368 Valtteri Vuorikoski)
4369 * The compiler is now able to inline functions that were defined in
4370 a complex lexical environment (e.g. inside a MACROLET).
4371 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4373 * Support for the upcoming FreeBSD-5.0 release has been included.
4374 (thanks to Dag-Erling Smorgrav)
4375 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4376 effect when it is not in a toplevel context.
4377 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4378 stand a better chance of being correct. (thanks to Gerd
4380 * fixed bug in COERCE, which now signals an error on coercing a
4381 rational to a bounded real type which excludes the expected
4383 * The compiler is now able to derive types more accurately from the
4384 COERCE and COMPILE functions.
4385 * fixed bug 223: functional binding is considered to be constant
4386 only for symbols in the CL package.
4387 * fixed bug 231: SETQ did not check the type of a variable being set
4388 (reported by Robert E. Brown)
4389 * A new optimization for MAKE-INSTANCE has been included, fixing
4390 various bugs (including relating to :ALLOCATION :CLASS slots and
4391 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4393 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4394 ** As required by ANSI, LOOP now disallows anonymous collection
4395 clauses such as COLLECT I in conjunction with aggregate boolean
4396 clauses such as THEREIS (= I 1);
4397 ** LOOP now signals an error when any variable is reused in the
4398 same loop (including the potentially useful construct analogous
4399 to WITH A = 1 WITH A = (1+ A);
4400 ** IT is only a special loop symbol within the first clause of a
4401 conditional loop clause;
4402 ** LOOP with a typed iteration variable over a hashtable now
4403 signals a type error iff it should.
4404 * fixed some other bugs revealed by Paul Dietz' test suite:
4405 ** FILE-STREAM now names the class previously known as FD-STREAM;
4406 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4407 argument) no longer signals an error;
4408 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4409 of the slot symbol, rather than using the current package
4410 ((:CONC-NAME "") continues to intern the slot's name in the
4412 * incremented fasl file version number, because of the incompatible
4413 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4414 of the new implementation of DEFINE-COMPILER-MACRO.
4416 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4417 * Support for building SBCL for MIPS platforms running in
4418 little-endian mode has now been checked in, and basic
4419 functionality on said platforms verified.
4420 * minor incompatible change: PCL now records the pathname of a file
4421 in which methods and the like are defined, rather than its
4423 * minor incompatible change: TRUENAME now considers the truename of
4424 a file naming a directory to be the pathname with :DIRECTORY
4425 component indicating that directory.
4426 * minor incompatible change: a NAMED clause in the extended form of
4427 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4428 reason for the previous behaviour is unclear.
4429 * more systematization and improvement of CLOS and MOP conformance
4430 in PCL (thanks to Gerd Moellman and Pierre Mai):
4431 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4433 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4434 primary methods with no specializers;
4435 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4437 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4438 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4439 FORWARD-REFERENCED-CLASSes; error reporting on
4440 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4442 ** SXHASH on CLOS instances now uses a slot internal to the
4443 instance to return different numbers on distinct instances,
4444 while preserving the same return value through invocations of
4446 ** DEFMETHOD signals errors when methods with longer incongruent
4447 lambda lists are added to generic functions;
4448 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4449 CLASS, as specified in AMOP;
4450 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4451 on the order returned by the primary method for classes of
4452 class STANDARD-CLASS;
4453 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4454 * fixed some bugs shown by Paul Dietz' test suite:
4455 ** DOLIST puts its body in TAGBODY;
4456 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4458 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4459 value producing form;
4460 ** if more variables are given to PROGV than values, extra
4461 variables are bound and made to have no value;
4462 ** NSUBSTITUTE on list arguments gets the right answer with
4464 ** ELT signals an error of type TYPE-ERROR when the index argument
4465 is not a valid sequence index;
4466 ** LOOP signals (at macroexpansion time) an error of type
4467 PROGRAM-ERROR when duplicate variable names are found;
4468 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4469 ** FUNCALL of special-operators now cause an error of type
4471 ** PSETQ now works as required in the presence of side-effecting
4472 symbol-macro places;
4473 ** NCONC accepts any object as its last argument;
4474 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4476 ** loop-for-as-package does not require a package to be explicitely
4478 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4480 * fixed bug 166: compiler preserves "there is a way to go"
4481 invariant when deleting code.
4482 * fixed bug 172: macro lambda lists with required arguments after
4483 &REST arguments now cause an error to be signalled. (thanks to
4485 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4486 bug. (thanks to Matthew Danish)
4487 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4489 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4490 arguments are lexically rebound. (thanks to Gerd Moellmann and
4492 * fixed bug 194: error messages are now more informative when there
4493 is no primary method applicable in a call to a generic
4494 function. (thanks to Gerd Moellmann)
4495 * fixed bug in command line argument checking (thanks to Julian
4497 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4498 (thanks to Matthew Danish)
4499 * incremented fasl file version number, because of the
4500 SXHASH-related changes in the layout of CLOS data structures
4502 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4503 * minor incompatible change: The runtime (the Unix executable named
4504 "sbcl") is now much pickier about the .core files it will load.
4505 Essentially it now requires .core files to descend from the same
4506 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4507 as the runtime does. (The intent is to prevent the crashes which
4508 can occur, and which can even be reported as mysterious failures,
4509 when people patch the sources or change the build parameters
4510 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4511 sbcl and .core files.)
4512 * fixed bug: VALUES-LIST is no longer optimized away.
4513 * fixed bug 142: The FFI conversion of C string values to Lisp
4514 string values no longer conses excessively. (thanks to Nathan
4515 Froyd porting Raymond Toy's fix to CMU CL)
4516 * began to systematize and improve MOP conformance in PCL (thanks to
4517 Nathan Froyd, Gerd Moellman and Pierre Mai):
4518 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4520 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4521 ** FINALIZE-INHERITANCE is now called on class finalization;
4522 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4523 argument precedence order.
4524 * fixed bug 202: The compiler no longer fails on functions whose
4525 derived types contradict their declared type.
4526 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4527 so it can be non-toplevel.
4528 * The fasl file version number has changed (because of the new
4529 implementation of DEFMACRO).
4530 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4531 safe code, that any length requirement by their type-specifier
4532 argument is valid. The exceptions to this are described in bug
4534 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4535 functions now check the types of their inputs as required by ANSI.
4536 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4537 introduced symbol is DECLAREd to be SPECIAL.
4538 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4539 * fixed bug: :COUNT argument to sequence functions may be negative
4540 * fixed bug: body of DO-SYMBOLS may contain declarations
4541 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4542 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4543 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4544 symbol macro only once
4545 * fixed printing of call frame when argument list is unavailable
4546 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4547 * compiler no longer signals WARNING on unknown keyword
4550 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4551 * A beta-quality port to the mips architecture running Linux,
4552 based on the old CMUCL backend, has been made. It has been tested
4553 on a big-endian kernel, and works sufficiently well to be able to
4554 rebuild itself; it has not been tested in little-endian mode.
4555 * fixed an inconsistency between gencgc.c and purify.c which made
4556 dumping/loading .core files unreliable
4557 * fixed bug 120a: The compiler now deals correctly with IFs where
4558 the consequent is the same as the alternative, instead of
4559 misderiving the return type. (thanks to Alexey Dejneka)
4560 * fixed bug 113: Logical pathnames are now dumpable (the logical
4561 host is resolved at load-time, throwing an error if it is not
4563 * fixed bug 174: FORMAT's error message is slightly clearer when a
4564 non-printing character is used in a format directive.
4565 * fixed several bugs in compiler checking of type declarations, i.e.
4566 violations of the Python "declarations are assertions" principle
4567 (thanks to Alexey Dejneka)
4568 * fixed several bugs in PCL's error checking (thanks to Gerd
4570 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4572 * fixed bug in compilation of functions as first class values
4573 (thanks to Antonio Martinez-Shotton)
4574 * The compiler's handling TYPE-ERRORs which it can prove will
4575 inevitably happen at runtime has been cleaned up and corrected
4576 in several ways. (thanks to Alexey Dejneka)
4577 * improved argument type checking for various basic arithmetic
4578 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4579 lavished on them in the past that they can be compiled in many
4580 ways in different special cases
4581 * fixed bug 181: compiler checks validity of user supplied type
4583 * cleaned up code flushing in optimization: Function calls which
4584 should signal errors for safety purposes (e.g. which ANSI says
4585 should signal errors when their arguments are of incorrect type)
4586 are no longer optimized away.
4587 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4588 * incremented fasl file version number, because changes in the
4589 implementation of sequence functions like COERCE caused
4590 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4591 in old inline expansions) to become undefined. (Actually these
4592 changes were later undone, so we might very well be binary
4593 compatible with 0.7.7 after all, but leaving the version number
4594 incremented seemed like the simplest and most conservative
4597 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4598 * An alpha-quality port to the parisc architecture running Linux,
4599 based on the old CMUCL backend, has been made. This, even more so
4600 than the other backends, should be considered still a work in
4601 progress; known problems include that the Linux kernel in 64-bit
4602 mode does not propagate the correct sigcontext structure to
4603 userspace, and consequently SBCL on a parisc64 kernel will not
4605 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4606 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4607 suppressed.) Also now that the compiler is looking at declarations
4608 in the environment, it checks optimization declarations as well,
4609 and suppresses inlining when (> DEBUG SPEED).
4610 * More fixes have been made to treatment of floating point exception
4611 treatment and other Unix signals. In particular, floating point
4612 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4613 * The detection and handling of control stack exhaustion (infinite
4614 or very deeply nested recursion) has changed. Stack exhaustion
4615 detection is now done by write-protecting pages at the OS level
4616 and applies at all optimization settings; when found, a
4617 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4618 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4619 be caught using IGNORE-ERRORS.
4620 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4621 correctly when transforming recursive LABELS functions to LETs.
4622 (thanks to Alexey Dejneka)
4623 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4624 that are names of constants or global variables.
4625 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4626 alien routines with docstrings.
4627 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4628 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4630 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4631 (thanks to Eric Marsden)
4632 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4633 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4634 * Bug fix: The SPARC backend can now compile functions involving
4635 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4636 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4637 to a functions expecting a PATHNAME-DESIGNATOR.
4638 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4639 lambda lists. (thanks to Alexey Dejneka)
4640 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4641 functions so that EXPORTing the name of the class doesn't cause
4642 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4643 to Antonio Martinez for reporting this)
4644 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4645 constant-folded without failing an assertion. (thanks to Einar
4646 Floystad Dorum for reporting this)
4647 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4648 types are now dealt with more correctly by the compiler.
4649 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4650 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4651 behaviour analogous to RENAME-FILE. This puts its behaviour more
4652 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4654 * The fasl file version number has changed again. (because of the
4655 bug fix involving the names of PCL MAKE-INSTANCE functions)
4657 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4658 * bug fix: Floating point exceptions are treated much more
4659 consistently on the x86/Linux and PPC/Linux platforms.
4660 * Array initialization with :INITIAL-ELEMENT is now much faster for
4661 cases when the compiler cannot open code the array creation, but
4662 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4663 array accesses have also seen a speed increase.
4664 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4665 specified. (This was at the root of some bad interactions between
4666 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4668 * bug fix: Internal error arguments for undefined functions are now
4669 computed correctly on the PPC/Linux platform.
4670 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4671 Raymond Toy's patch for CMU CL)
4672 * Support for the Solaris 9 operating environment has been included
4673 (thanks to Daniel Merritt)
4674 * A very ugly but hopefully complete draft of the missing FFI chapter
4675 of the manual has been created by reformatting the corresponding
4676 CMU CL manual chapter into (currently very ugly and incoherent)
4677 DocBook and bringing it up to date for SBCL behavior. Thus, the
4678 manual is now essentially complete, at least by my extreme
4679 once-and-only-once standards, whereby it's acceptable to refer to
4680 the doc strings of SB-EXT functions as the primary documentation.
4681 * The fasl file version number has changed again, due to cleanup of
4682 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4683 is no longer a static symbol.)
4685 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4686 * SBCL now builds with OpenMCL (version 0.12) as the
4687 cross-compilation host; also, more progress has been made toward
4688 bootstrapping under CLISP.
4689 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4691 * bug 158 fixed: The compiler can now deal with integer loop
4692 increments different from 1; fixing this turned out also to fix
4694 * bug 169 fixed: no more bogus warnings about using lexical bindings
4695 despite the presence of perfectly good SPECIAL declarations (thanks
4696 to David Lichteblau)
4697 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4698 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4699 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4701 * bug 180 fixed: Method combination specifications no longer ignore
4702 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4703 * bug fix: Structure type predicate functions now check their argument
4704 count as they should.
4705 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4706 correctly. (thanks to Pierre Mai)
4707 * minor incompatible change: The --noprogrammer option is deprecated
4708 in favor of the new --disable-debugger option, which is very similar.
4709 (The major difference is that it takes effect at a slightly different
4710 time at startup, causing handling of errors in --sysinit and
4711 --userinit files will be affected differently.) The
4712 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4713 been added to allow this functionality to be controlled from ordinary
4714 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4715 maintainers, who might want to run non-interactive scripts to
4716 build SBCL cores which will later be used interactively.)
4717 * minor incompatible change: The LOAD function no longer, when given
4718 a wild pathname to load, loads all files matching that pathname.
4719 Instead, an error of type FILE-ERROR is signalled.
4721 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4722 * bug 147 fixed: The compiler preserves its block link/count
4723 invariants more correctly now so that it doesn't crash. (thanks
4725 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4727 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4728 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4729 no-value-for-this-character as NIL (as specified by ANSI).
4730 * HOST-NAMESTRING on physical pathnames now returns a string that is
4731 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4732 (thanks to Christophe Rhodes)
4733 * The Alpha port handles icache flushing more correctly. (thanks to
4735 * More progress has been made toward bootstrapping under CLISP. (thanks
4736 to Christophe Rhodes)
4737 * The fasl file format has changed again, because dynamic loading
4738 on OpenBSD (which has non-ELF object files) motivated some cleanups
4739 in the way that foreign symbols are transformed and passed around.
4740 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4741 is no longer treated as whitespace by the reader, but instead as
4742 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4743 |A
\7fB|, instead of A as it used to.
4745 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4746 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4747 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4748 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4749 this as of 0.7.1.45, but was left out of the previous news section
4750 (thanks to Dan Barlow)
4751 * SBCL now runs on the Solaris operating system on SPARC architectures
4752 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4753 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4754 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4755 * SPARC backend cleanups, allowing builds of cores optimized for V8
4756 and V9 SPARCS, and also emission of code targeted to a particular
4757 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4759 * SBCL is closer to bootstrapping under CLISP, thanks to various
4760 fixes by Christophe Rhodes.
4761 * The fasl file format has changed again, to allow the compiler's
4762 INFO database to support symbol macros.
4763 * The user manual (in doc/) is formatted into HTML more nicely.
4764 (thanks to coreythomas)
4765 * The system is smarter about SUBTYPEP relationships, especially
4766 those involving NOT types (including types such as ATOM which are
4767 represented internally using NOT types). Thus SUBTYPEP is less
4768 likely to return (VALUES NIL NIL) in general, and in particular
4769 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4771 * The fasl file format has changed again, because the internal
4772 representation of types now includes a new slot to support the new
4773 SUBTYPEP-of-NOT-types logic.
4774 * (not a change in the main branch of SBCL, but a related prototype
4775 which can hopefully be merged into the main branch of SBCL in the
4776 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4777 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4778 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4779 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4780 dispatch macro character combinations. (thanks to Alexey Dejneka)
4781 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4782 that superficially look like logical namestrings correctly.
4783 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4785 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4786 default supplied-p) for &optional and &key arguments. (thanks to
4789 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4790 * incompatible change: The compiler is now less aggressive about
4791 tail call optimization, doing it only when (> SPACE DEBUG) or
4792 (> SPEED DEBUG). (This is an incompatible change because there are
4793 programs which relied on the old CMU-CL-style behavior to optimize
4794 away their unbounded recursion which will now die of stack overflow.)
4795 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4796 for non-GENCGC systems has been increased to 20M (since that
4797 seems much closer to the likely performance optimum for modern
4798 systems than the old 4M value was)
4799 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4800 and *DEBUG-PRINT-LEVEL*
4801 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4802 of CMU CL's support for SPARC, and various endianness and other
4803 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4804 * new syntactic sugar for the Unix command line: --load foo.bar is now
4805 an alternate notation for --eval '(load "foo.bar")'.
4807 ** The system now detects stack overflow and handles it gracefully,
4808 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4809 optimization settings. (This is a good thing in general, and
4810 its introduction in this version should be particularly timely
4811 for anyone whose code fails because of suppression of tail
4813 ** The system now hunts for the C variable "environ" in a more
4814 devious way, to avoid segfaults when the C library version differs
4815 between compile time and run time. (thanks to Christophe Rhodes)
4816 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4817 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4818 ** The compiler no longer issues bogus style warnings for undefined
4819 classes in the same source file as the DEFCLASSes which defined
4820 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4822 ** fixes in CONDITION class precedence list for undefined function
4823 errors (thanks to Alexei Dejneka)
4824 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4825 correctly. (thanks to Dan Barlow)
4826 ** portability fixes aiming at bootstrapping under CLISP (thanks
4827 to Dave McDonald and Christophe Rhodes)
4828 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4829 ** fixes in type translation and and type inference (thanks to
4831 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4832 ** various fixes in the new ports (thanks to Dan Barlow)
4833 * several changes related to debugging:
4834 ** suppression of tail recursion, as noted above
4835 ** stack overflow detection, as noted above
4836 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4837 is now the default. (For some time encapsulation has been more
4838 reliable than the breakpoint-based :ENCAPSULATE NIL
4839 implementation, at least on X86 systems; and I just noticed that
4840 encapsulation also seems closer to the spirit of the ANSI
4843 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4845 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4846 up properly again. (There was a packaging bug in 0.7.0 which
4847 left their definitions in SB-SYS::LOAD-FOREIGN and
4848 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4849 vital for most things which interface to C-level interfaces,
4850 like extensions working with sockets or databases or
4851 Perl-compatible regexes or whatever, and the need to fix
4852 this bug is the main reason that 0.7.1 was released so
4854 ** DEFGENERIC is now choosier about the methods it redefines, so that
4855 reLOADing a previously-LOADed file containing DEFGENERICs does
4856 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4857 cycle now works as it should. (thanks to Alexey Dejneka)
4858 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4859 fixed by Christophe Rhodes. (He actually submitted this patch
4860 months ago, and I delayed until after 0.7.0.)
4861 ** Bug 111 (internal compiler confusion about runtime checks on
4862 FUNCTION types) was fixed by Alexey Dejneka.
4863 * Some internal cleanups (getting rid of variables which aren't
4864 needed now that the byte interpreter is gone) caused the fasl
4865 file format number to change again.
4867 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4868 * major incompatible change: The default fasl file extension, i.e. the
4869 default extension for files produced by COMPILE-FILE, has changed
4870 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4872 ** There are many changes in the implementation of the compiler.
4873 SBCL is now essentially a compiler-only implementation of ANSI
4874 Common Lisp. EVAL still "interprets" a few special cases, but
4875 almost all the interesting cases are handled by creating
4876 a LAMBDA expression, calling COMPILE on it, then calling
4877 FUNCALL on the result.
4878 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4879 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4880 Since the code is newer, there might still be some new bugs
4881 (though not as many as before Martin Atzmueller's fixes:-). But
4882 the new code is substantially simpler and clearer, and hopefully
4883 any remaining bugs will be simpler, less fundamental, and more
4884 fixable then the bugs in the old code.
4885 ** The revised compiler is still a little unsteady on its feet.
4887 *** The debugging information it produces (particularly the names
4888 of FUNCTION objects) is sometimes much less useful than what
4889 the old compiler produced.
4890 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4891 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4892 within a MACROLET) has been temporarily weakened.
4893 ** There are new compiler optimizations for various functions:
4894 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4895 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4896 *** the math functions TRUNCATE, FLOOR, and CEILING
4897 *** the function-of-all-trades COERCE
4898 Mostly these should be transparent, but there's one
4899 potentially-annoying problem (bug 117): when the compiler
4900 inline-expands a function and does type analysis on the result,
4901 it can create control paths which have type mismatches, and
4902 when it can't prove that those control paths aren't taken,
4903 it will issue WARNINGs about the type mismatches. This is
4904 a particular problem in practice for the new sequence functions.
4905 It's not clear how this should be fixed, and for now, a
4906 workaround is given in the entry for 117 in the BUGS file.
4907 ** (Because of the interaction between the two previous items --
4908 occasional inlining problems and new inline expansions -- some
4909 of the new sequence function optimizations won't really kick in
4910 completely until debugging information, and then inlining, are
4911 straightened out in some future version.)
4912 * minor incompatible changes:
4913 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4914 DIRECTORY no longer implicitly promotes NIL slots of its
4915 pathname argument to :WILD. In particular, when you ask for the
4916 contents of a directory (which you used to be able to do without
4917 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4918 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4919 ** changes in behavior that ANSI explicitly defines to be
4920 implementation dependent:
4921 *** The new compiler-only implementation still conforms with ANSI,
4922 but acts a little different than before. Besides the obvious
4923 changes in performance tradeoffs (that the cost per form passed
4924 to EVAL has gone up, and the cost per form executed by EVAL
4925 has gone down), the behavior of the system changes a little
4926 because there are no longer any interpreted function objects.
4927 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4928 e.g. doing COMPILE on the output of interactive DEFUN is
4930 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4932 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4933 has changed from (:CL) to NIL.
4934 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4935 e.g. #\Newline and #\Tab, don't have names specified in the
4936 ANSI Common Lisp standard, is now based on their ASCII symbolic
4937 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4938 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4939 are no longer used for output.
4940 ** changes in internal implementation constants:
4941 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4942 4 million. (If your application spends a lot of time GCing and
4943 you have a lot of RAM, you might want to experiment with
4944 increasing it even more.)
4945 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4946 However, almost all old code should still continue to work without
4947 immediate update, as SB-C-CALL is now a (deprecated) nickname
4949 ** Old operator names in the style DEF-FOO are now deprecated in
4950 favor of new corresponding names DEFINE-FOO, for consistency with
4951 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4952 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4953 internal symbols, but a few supported extensions like
4954 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4955 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4956 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4957 etc. as you get deeper into recursive calls to the debugger
4958 command loop, instead of the old "5]", "5]]", "5]]]"
4959 sequence. (I was motivated to do this when squabbles between
4960 ILISP and SBCL left me very deeply nested in the debugger. In the
4961 short term, this change will probably provoke more ILISP/SBCL
4962 squabbles, but hopefully it will be an improvement in the long run.)
4963 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4964 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4965 function, since declaiming return types involving aliens is
4966 (1) annoyingly messy to do by hand and (2) vital to efficient
4967 compilation of code which calls such functions.
4968 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4969 longer reexported by the SB-EXT package. They're solely useful
4970 for alien code, so it seems more logical that you should get
4971 them from the SB-ALIEN package, not in SB-EXT.
4972 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4973 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4974 features. Instead, the code that they used to control is always
4975 built into the system.
4976 * many other bug fixes
4977 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4978 advantage of the new EVAL-WHEN stuff and to clean them up in
4979 general, and they are now more ANSI-compliant in a number of
4980 ways. Martin Atzmueller is responsible for a lot of this.
4981 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4983 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4984 *** correct ERROR type for various file operations
4985 *** some fixes for Lisp streams
4986 *** DEFMETHOD syntax checking
4987 *** changing old weird representation of debug information as
4988 strings (which, among their other deficiencies, don't transform
4989 correctly when you rename packages, and don't change their
4990 print representation when you change things like *PACKAGE*
4991 and *PRINT-LENGTH*) to symbols and lists of symbols
4992 He also made several improvements and fixed several bugs in DESCRIBE.
4993 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4995 *** misbehavior of WRITE-STRING/WRITE-LINE
4996 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4997 and several other LOOP problems as well
4998 *** DIRECTORY when similar filenames are present
4999 *** DEFGENERIC with :METHOD options
5000 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5001 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5002 *** argument ordering in FIND with :TEST option
5003 *** mishandled package designator argument in APROPOS-LIST
5004 *** various problems in the backquote readmacro
5005 *** a bug in APROPOS
5006 *** probably some others that I'm not describing very well here,
5007 since the CVS log documents them by reference to sbcl-devel
5008 messages, and the SourceForge archives aren't working well.:-(
5009 ** Dan Barlow improved the Alpha port (and is making progress on the
5010 PPC port, for those of you who think different).
5011 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5012 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5013 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5014 continues to work on the SPARC port (for those of you in a position
5015 to look down upon our little PC-compatible boxes from a great height).
5016 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5017 and uses that copy, rather than the current dynamic value, when
5018 it's trying to decide whether to truncate output. Thus e.g.
5019 (let ((*print-lines* 50))
5020 (pprint-logical-block (stream nil)
5022 (let ((*print-lines* 8))
5023 (print (aref possiblybigthings i) stream)))))
5024 should now truncate the logical block only at 50 lines, instead of
5025 often truncating it at 8 lines, as it did before.
5026 * The doc/cmucl/ directory, containing old CMU CL documentation
5027 from the time of the fork, is no longer part of the base system.
5028 SourceForge has shut down its anonymous FTP service, and with it
5029 my original plan for distributing the old CMU CL documentation
5030 there. For now, if you need these files you can download an old
5031 SBCL source release and extract them from it.
5032 * The fasl file version number changed again, for dozens of reasons,
5033 some of which are apparent above.
5035 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5036 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5037 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5038 patch, so that DISASSEMBLE output is much nicer.
5039 * The code in the SB-PROFILE package now seems reasonably stable.
5040 I still haven't decided what the final interface should look like
5041 (I'd like PROFILE to interact cleanly with TRACE, since both
5042 facilities use function encapsulation) but if you have a need
5043 for profiling now, you can probably use it successfully with
5044 the current CMU-CL-style interface.
5045 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5046 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5047 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5048 link now returns the dangling link itself, and for similar
5049 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5050 link itself. (In these cases the old code signalled an error and
5051 looped endlessly, respectively.) Thus, DIRECTORY now works even
5052 in the presence of dangling and cyclic symbolic links.
5053 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5054 is now a supported extension again, since the consensus on
5055 sbcl-devel was that it can be useful for ordinary development
5056 work, not just for debugging SBCL itself.
5057 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5058 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5059 that currently-defined functions might be redefined later with
5060 different return types.
5061 * Hash tables can be printed readably, as inspired by CMU CL code
5062 of Eric Marsden and SBCL code of Martin Atzmueller.
5063 * better error handling in CLOS method combination, thanks to
5064 Martin Atzmueller porting Pierre Mai's CMU CL patches
5065 * more overflow fixes for >16Mbyte I/O buffers
5066 * A bug in READ has been fixed, so that now a single Ctrl-D
5067 character suffices to cause end-of-file on character streams.
5068 In particular, now you only need one Ctrl-D at the command
5069 line (not two) to exit SBCL.
5070 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5072 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5073 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5074 does the right thing.
5075 * The implementation of some type tests, especially for CONDITION
5076 types, is now tidier and maybe faster, due to CMU CL code
5077 originally by Douglas Crosher, ported by Martin Atzmueller.
5078 * Some math functions have been fixed, and there are new
5079 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5080 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5081 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5082 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5083 likely to be built into sbcl-0.7.0.)
5084 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5085 CL, ported to SBCL by Martin Atzmueller)
5086 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5087 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5088 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5089 * There's a new slam.sh hack to shorten the edit/compile/debug
5090 cycle for low-level changes to SBCL itself, and a new
5091 :SB-AFTER-XC-CORE target feature to control the generation of
5092 the after-xc.core file needed by slam.sh.
5093 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5094 COMPILE-FILE is no longer supported, so that now every function
5095 gets an entry point, so that block compilation looks a little
5096 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5097 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5098 returns the number of bytes consed since the system started,
5099 rather than the number consed since the first time the function
5100 was called. (The new definition parallels ANSI functions like
5101 CL:GET-INTERNAL-RUN-TIME.)
5102 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5103 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5104 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5105 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5106 * Fasl file version numbers are now independent of the target CPU,
5107 since historically most system changes which required version
5108 number changes have affected all CPUs equally. Similarly,
5109 the byte fasl file version is now equal to the ordinary
5112 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5113 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5114 is no longer recognized. I apologize for this, because it was
5115 listed in SB-EXT as a supported extension, but I found that
5116 its existing behavior was poorly specified, as well as incorrectly
5117 specified, and it looked like too much of a mess to straighten it
5118 out. I have enough on my hands trying to get ANSI stuff to work..
5119 * many patches ported from CMU CL by Martin Atzmueller, with
5120 half a dozen bug fixes in pretty-printing and the debugger, and
5121 half a dozen others elsewhere
5122 * fixed bug 13: Floating point infinities are now supported again.
5123 They might still be a little bit flaky, but thanks to bug reports
5124 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5125 as flaky as they were.
5126 * The --noprogrammer command line option is now supported. (Its
5127 behavior is slightly different in detail from what the old man
5128 page claimed it would do, but it's still appropriate under the
5129 same circumstances that the man page talks about.)
5130 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5131 are now supported, and enabled by default. Thus, the compiler can
5132 handle many floating point and complex operations much less
5133 inefficiently. (Thus e.g. you can implement a complex FFT
5135 * The compiler now detects type mismatches between DECLAIM FTYPE
5136 and DEFUN better, and implements CHECK-TYPE more correctly, and
5137 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5138 thanks to patches from Martin Atzmueller.
5139 * various fixes to make the cross-compiler more portable to
5140 ANSI-conforming-but-different cross-compilation hosts (notably
5141 Lispworks for Windows, following bug reports from Arthur Lemmens)
5142 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5143 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5144 fixed thanks to Pierre Mai's CMU CL patches.
5145 * fixes to keep the system from overflowing internal counters when
5146 it tries to use i/o buffers larger than 16M bytes
5147 * fixed bug 45a: Various internal functions required to support
5148 complex special functions have been merged from CMU CL sources.
5149 (When I was first setting up SBCL, I misunderstood a compile-time
5150 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5151 * improved support for type intersection and union, fixing bug 12
5152 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5153 more obscure bugs as well
5154 * some steps toward byte-compiling non-performance-critical
5155 parts of the system, courtesy of patches from Martin Atzmueller
5156 * Christophe Rhodes has made some debian packages of sbcl at
5157 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5158 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5159 stable, but are nonetheless usable. When he's ready, I'd be happy
5160 to add them to the SourceForge "File Releases" section. (And if
5161 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5162 * new fasl file format version number (because of changes in
5163 internal representation of (OR ..) types to accommodate the new
5164 support for (AND ..) types, among other things)
5166 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5167 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5169 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5171 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5172 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5173 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5174 * DESCRIBE now works on structure objects again.
5175 * Most function call argument type mismatches are now handled as
5176 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5177 know whether the function will be redefined before the call is
5178 executed. (The compiler could flag local calls with full WARNINGs,
5179 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5180 it doesn't keep track of enough information to know whether calls
5181 are local in this sense.)
5182 * Compiler output is now more verbose, with messages truncated
5183 later than before. (There should be some supported way for users
5184 to override the default verbosity, but I haven't decided how to
5185 provide it yet, so this behavior is still controlled by the internal
5186 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5187 src/compiler/ir1util.lisp.)
5188 * Fasl file format version numbers have increased again, because
5189 support for the Gray streams extension changes the layout of the
5190 system's STREAM objects.
5191 * The Gray subclassable streams extension now works, thanks to a
5192 patch from Martin Atzmueller.
5193 * The full LOAD-FOREIGN extension (not just the primitive
5194 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5195 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5196 but like most other programs, it defaults to copying the Unix
5197 environment from the original process instead of starting the
5198 new process in an empty environment.
5199 * Extensions which manipulate the Unix environment now support
5200 an :ENVIRONMENT keyword option which doesn't smash case or
5201 do other bad things. The CMU-CL-style :ENV option is retained
5202 for porting convenience.
5203 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5204 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5206 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5208 * A patch from Martin Atzmueller seems to have solved the SIGINT
5209 problem, and as far as we know, signal-handling now works cleanly.
5210 (If you find any new bugs, please report them!)
5211 * The system no longer defaults Lisp source file names to types
5212 ".l", ".cl", or ".lsp", but only to ".lisp".
5213 * The compiler no longer uses special default file extensions for
5214 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5215 seems to expect a single default extension for all compiled code,
5216 and there's no compelling reason to try to stretch the standard
5217 to allow two different extensions.) Instead, byte-compiled files
5218 default to the same extension as native-compiled files.
5219 * Fasl file format version numbers have increased again, because
5220 a rearrangement of internal implementation packages made some
5221 dumped symbols in old fasl files unreadable in new cores.
5222 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5223 many fewer weird special cases.
5224 * Bug #17 (differing COMPILE-FILE behavior between logical and
5225 physical pathnames) has been fixed, and some related misbehavior too,
5226 thanks to a patch from Martin Atzmueller.
5227 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5228 by Tim Moore, ported to SBCL by Martin Atzmueller.
5229 * Martin Atzmueller fixed several filesystem-related problems,
5230 including bug #36, in part by porting CMU CL patches, which were
5231 written in part by Paul Werkowski.
5232 * More compiler warnings in src/runtime/ are gone, thanks to
5233 more patches from Martin Atzmueller.
5234 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5237 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5239 * DESCRIBE now works on CONDITION objects.
5240 * The debugger now handles errors which arise when trying to print
5241 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5243 * The build system now uses an additional file, customize-target-features.lisp,
5244 to allow local modifications to the target *FEATURES* list. (The point of
5245 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5246 debugging features enabled, without having to worry about propagating it
5247 into everyone's system when I do a "cvs update".) When no
5248 customize-target-features.lisp file exists, the target *FEATURES* list
5249 should be constructed the same way as before.
5250 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5251 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5252 warn about behavior which is undefined under the ANSI spec. Note: This
5253 is specified by ANSI, but it's not very popular with programmers.
5254 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5255 macro in the SBCL sources for an example of a workaround which you
5256 might use to make portable ANSI-standard code which does what you want.
5257 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5258 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5259 when it's used as a non-toplevel form. (This is required in order
5260 to implement the DEFCONSTANT-EQX macro.)
5261 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5262 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5263 funny things, due to bugs in the implementation of EVAL-WHEN
5264 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5265 non-toplevel DEFCONSTANTs are uncommon.)
5266 * The core file version number and fasl file version number have been
5267 incremented, because the old noncompliant DEFCONSTANT behavior involved
5268 calling functions which no longer exist, and because I also took the
5269 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5270 * fixed bug 1 (error handling before read-eval-print loop starts), and
5271 redid debugger restarts and related debugger commands somewhat while
5273 ** The QUIT debugger command is gone, since it did something
5274 rather different than the SB-EXT:QUIT command, and since it never
5275 worked properly outside the main toplevel read/eval/print loop.
5276 Invoking the new TOPLEVEL restart provides the same functionality.
5277 ** The GO debugger command is also gone, since you can just invoke
5278 the CONTINUE restart directly instead.
5279 ** The TOP debugger command is also gone, since it's redundant with the
5280 FRAME 0 command, and since it interfered with abbreviations for the
5282 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5284 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5285 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5286 some porting work by Martin Atzmueller)
5287 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5288 with a boatload of patches which he ported to SBCL. Now that those
5290 ** The system tries to make sure that its low-priority messages
5291 are prefixed by semicolons, to help people who like to use
5292 syntax highlighting in their ILISP buffer. (This patch
5293 was originally due to Raymond Toy.)
5294 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5295 patches originally written by Raymond Toy.
5296 ** The compiler understands coercion between single-value and
5297 multiple-VALUES type expressions better, getting rid of some very
5298 weird behavior, thanks to patches originally by Robert MacLachlan
5299 and Douglas Crosher.
5300 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5301 lambda lists, thanks to a patch originally by Pierre Mai.
5302 ** The system no longer bogusly warns about "abbreviated type
5304 ** The compiler gets less confused by inlining and RETURN-FROM,
5305 thanks to some patches originally by Tim Moore.
5306 ** The system no longer hangs when dumping circular lists to fasl
5307 files, thanks to a patch originally from Douglas Crosher.
5308 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5309 undefined function error.
5310 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5311 in structure slot initforms) for now, documented workaround instead:-|
5312 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5313 * fixed bug 5: added stubs for various Gray stream functions called
5314 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5315 installed, at least appropriate type errors are generated
5316 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5317 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5318 consistently in DEFMETHOD forms.
5319 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5320 it doesn't seem to affect SBCL after all
5321 * The C runtime system now builds with better optimization and many
5322 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5324 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5326 * The system is now under CVS at SourceForge (instead of the
5327 CVS repository on my home machine).
5328 * The new signal handling code has been tweaked to treat register
5329 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5330 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5331 downstream, e.g. in debug-int.lisp, has implicit dependencies
5332 on the unsignedness of integer representation of machine words,
5333 and that caused the system to bomb out with infinite regress
5334 when trying to recover from type errors involving signed values,
5335 e.g. (BUTLAST '(1 2 3) -1).)
5336 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5337 (This was one of the bugs Peter Van Eynde reported back in July.)
5338 * The system now uses code inspired by Colin Walters' O(N)
5339 implementation of MAP (from the cmucl-imp@cons.org mailing
5340 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5341 inline the MAP operation, and there is more than one
5342 sequence argument to the MAP call (so that it can't just
5343 do ETYPECASE once and for all based on the type of the
5344 single sequence argument). (The old non-inline implementation
5345 of the general M-argument sequence-of-length-N case required
5346 O(M*N*N) time when any of the sequence arguments were LISTs.)
5347 * The QUIT :UNIX-CODE keyword argument has been renamed to
5348 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5349 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5351 * Raymond Wiker's patches to port dynamic loading from Linux to
5352 FreeBSD have been added.
5353 * The BUGS file is now more nearly up to date, thanks in large part
5354 to Martin Atzmueller's review of it.
5355 * The debugger now flushes standard output streams before it begins
5356 its output ("debugger invoked" and so forth).
5357 * The core version number and fasl file version number have both
5358 been incremented, because of incompatible changes in the layout
5360 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5361 used to not be called for a saved Lisp image.)
5362 * Martin Atzmueller's version of a patch to fix a compiler crash,
5363 as posted on sbcl-devel 13 September 2000, has been installed.
5364 * Instead of installing Martin Atzmueller's patch for the
5365 compiler transform for SUBSEQ, I deleted the compiler transform,
5366 and transforms for some similar consing operations.
5367 * A bug in signal handling which kept TRACE from working on OpenBSD
5369 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5370 away by constant folding
5371 * The system now defines its address space constants in one place
5372 (in the Lisp sources), and propagates them automatically elsewhere
5373 (through GENESIS and the sbcl.h file). Therefore, patching the
5374 address map is less unnecessarily tedious and error-prone. The
5375 Lisp names of address space constants have also been systematized.
5376 * CVS tags like dollar-Header-dollar have been removed from
5377 the sources, because they have never saved me trouble and
5378 they've been source of trouble working with patches and other
5379 diff-related operations.
5380 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5381 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5383 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5385 * The system has been ported to OpenBSD.
5386 * The system now compiles with a simple "sh make.sh" on the systems
5387 that it's supported on. I.e., now you no longer need to tweak
5388 text in the target-features.lisp-expr and symlinks in src/runtime/
5389 by hand, the make.sh takes care of it for you.
5390 * The system is no longer so grossly inefficient when compiling code
5391 involving vectors implemented as general (not simple) vectors (VECTOR T),
5392 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5393 which dares to use the various sequence functions on non-simple
5394 vectors, takes less of a performance hit.
5395 * There is now a primitive type predicate VECTOR-T-P
5396 to test for the (VECTOR T) type, so that e.g.
5397 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5398 can now be compiled with some semblance of efficiency. (The old code
5399 turned the type declaration into a full call to %TYPEP at runtime!)
5400 * AREF on (VECTOR T) is still not fast, since it's still compiled
5401 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5402 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5403 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5404 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5405 without making full calls to SUBTYPEP at runtime.
5406 (Some analogous efficiency issues for non-simple vectors specialized to
5407 element types other than T, or for non-simple multidimensional arrays,
5408 have not been addressed. They could almost certainly be handled the
5409 same way if anyone is motivated to do so.)
5410 * The changes in array handling break binary compatibility, so
5411 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5412 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5413 instead of (VALUES T T).
5414 * By following the instructions that Dan Barlow posted to sbcl-devel
5415 on 2 July 2000, I was able to enable primitive dynamic object
5416 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5417 functionality is not implemented (since it calls ld to resolve
5418 library references automatically, requiring RUN-PROGRAM for its
5419 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5420 try to resolve library references) is now supported.
5421 * The system now flushes the standard output streams when it terminates,
5422 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5423 them at several other probably-convenient times, e.g. in each pass of
5424 the toplevel read-eval-print loop, and after evaluating a form given
5425 as an "--eval" command-line option. (These changes were motivated by a
5426 discussion of stream flushing issues on cmucl-imp in August 2000.)
5427 * The source transform for TYPEP of array types no longer assumes
5428 that an array whose element type is a not-yet-defined type
5429 is implemented as an array of T, but instead punts, so that the
5430 type will be interpreted at runtime.
5431 * There is now some support for cross-compiling in make.sh: each of
5432 the phases of make.sh has its own script. (This should be transparent
5433 to people doing ordinary, non-cross-compile builds.)
5434 * Since my laptop doesn't have hundreds of megabytes of memory like
5435 my desktop machine, I became more motivated to do some items on
5436 my to-do list in order to reduce the size of the system a little:
5437 ** Arrange for various needed-only-at-cold-init things to be
5438 uninterned after cold init. To support this, those things have
5439 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5440 symbols with such names are now uninterned after cold init).
5441 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5442 fasl files for cold load.
5443 ** Remove the old compiler structure pooling code (which used to
5444 be conditional on the target feature :SB-ALLOC) completely.
5445 ** Redo the representation of some data in cold init to be more compact.
5446 (I also looked into supporting byte compiled code at bootstrap time,
5447 which would probably reduce the size of the system a lot, but that
5448 looked too complicated, so I punted for now.)
5449 * The maximum signal nesting depth in the src/runtime/ support code has
5450 been reduced from 4096 to 256. (I don't know any reason for the very
5451 large old value. If the new smaller value turns out to break something,
5452 I'll probably just bump it back up.)
5453 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5455 * Many, many bugs reported by Peter Van Eynde have been added to
5456 the BUGS list; some have even been fixed.
5457 * While enabling dynamic object file loading, I tried to make the
5458 code easier to understand, renaming various functions and variables
5459 with less ambiguous names, and changing some function calling
5460 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5461 * While trying to figure out how to do the OpenBSD port, I tried to
5462 clean up some of the code in src/runtime/. In particular, I dropped
5463 support for non-POSIX signal handling, added various comments,
5464 tweaked the code to reduce the number of compilation warnings, and
5465 renamed some files to increase consistency.
5466 * To support the new automatic configuration functionality in make.sh,
5467 the source file target-features.lisp-expr has been replaced with the
5468 source file base-target-features.lisp-expr and the machine-generated
5469 file local-target-features.lisp-expr.
5470 * fixed a stupid quoting error in make.sh so that using CMU CL
5471 "lisp -batch" as cross-compilation host works again
5473 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5475 * DESCRIBE no longer tries to call itself recursively to describe
5476 bound/fbound values, so that it no longer fails on symbols which are
5477 bound to themselves (like keywords, T, and NIL).
5478 * DESCRIBE now works on generic functions.
5479 * The printer now prints less-screwed-up representations of closures
5480 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5481 * A private symbol is used instead of the :EMPTY keyword previously
5482 used to mark empty slots in hash tables. Thus
5483 (DEFVAR *HT* (MAKE-HASH-TABLE))
5484 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5485 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5486 now does what ANSI says that it should. (You can still get
5487 similar noncompliant behavior if bang on the hash table
5488 implementation with all the symbols you get back from
5489 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5490 This breaks binary compatibility, since tests for equality to
5491 :EMPTY are wired into things like the macroexpansion of
5492 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5494 * There's now a minimal placeholder implementation for CL:STEP,
5495 as required by ANSI.
5496 * An obscure bug in the interaction of the normal compiler, the byte
5497 compiler, inlining, and structure predicates has been patched
5498 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5499 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5501 * Missing ordinary arguments in a macro call are now detected even
5502 when the macro lambda list contains &KEY or &REST.
5503 * The debugger no longer complains about encountering the top of the
5504 stack when you type "FRAME 0" to explicitly instruct it to go to
5505 the top of the stack. And it now prints the frame you request even
5506 if it's the current frame (instead of saying "You are here.").
5507 * As specified by ANSI, the system now always prints keywords
5508 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5510 * The default initial SIZE of HASH-TABLEs is now smaller.
5511 * Type information from CLOS class dispatch is now propagated
5512 into DEFMETHOD bodies, so that e.g.
5513 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5515 is now basically equivalent to
5516 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5517 (DECLARE (TYPE SINGLE-FLOAT X))
5519 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5520 operation, without having to do run-time type dispatch.
5521 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5522 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5523 * Since I don't seem to be making big file reorganizations very often
5524 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5525 is overflowing my ability to conveniently back them up), I've finally
5526 checked the system into CVS. (The CVS repository is on my home system,
5527 not at SourceForge -- putting it on SourceForge might come later.)
5528 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5529 high-level GC-NOTIFY-FOO functions send their output. (There's
5530 still very little control of where low-level verbose GC functions
5531 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5532 less than it used to -- the GC-NOTIFY-FOO functions are now under
5533 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5534 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5535 in only one place in the source code, and propagates it automatically
5536 everywhere that it's needed. Thus e.g. when I bump the version from
5537 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5538 * The C source files now include boilerplate legalese and documentation
5539 at the head of each file (just as the Lisp source files already did).
5540 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5541 to his page will be replaced with a link to his new CLiki service.
5543 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5545 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5546 * The build process now looks for GNU make under the default name "gmake",
5547 instead of "make" as it used to. If GNU make is not available as "gmake"
5548 on your system, you can change this default behavior by setting the
5549 GNUMAKE environment variable.
5550 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5551 can build without error under CMU CL.
5553 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5555 * There is now a partial SBCL user manual (with some new text and some
5556 text cribbed from the CMU CL manual).
5557 * The beginnings of a profiler have been added (starting with the
5558 CMU CL profiler and simplifying and cleaning up). Eventually the
5559 main interface should be through the TRACE macro, but for now,
5560 it's still accessed through vaguely CMU-CL-style functions and macros
5561 exported from the package SB-PROFILE.
5562 * Some problems left over from porting CMU CL to the new
5563 cross-compilation bootstrap process have been cleaned up:
5564 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5565 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5566 part when getting rid of the compiler *BACKEND* stuff.)
5567 ** The value of *NULL-TYPE* was screwed up, because it was
5568 being initialized before the type system knew the final
5569 definition of the 'NULL type. This screwed up several key
5570 optimizations in the compiler, causing inefficiency in all sorts
5571 of places. (I found it because I wanted to understand why
5572 GET-INTERNAL-RUN-TIME was consing.)
5573 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5574 PROCLAIM FTYPE information. Unfortunately this broke binary
5575 compatibility again, since now the forms output by DEFGENERIC
5576 to refer to functions which didn't exist in 0.6.3.
5577 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5578 can use the new (as of 0.6.3) transform for SOME into MAP into
5580 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5581 values to (INTEGER 0 1000000), so that the time code will no longer
5582 occasionally get blown up by Linux returning 1000000 microseconds
5583 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5584 its output conform to the ANSI spec. (Alas, this makes its output
5585 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5586 * A full call to MAP NIL with a single sequence argument no longer conses.
5587 * fixes to problems pointed out by Martin Atzmueller:
5588 * The manual page no longer talks about multiprocessing as though
5589 it were currently supported.
5590 * The ILISP support patches have been removed from the distribution,
5591 because as of version 5.10.1, ILISP now supports SBCL without us
5592 having to maintain patches.
5593 * added a modified version of Raymond Toy's recent CMU CL patch for
5594 EQUALP comparison of HASH-TABLE
5596 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5598 * The system still can't cross-compile itself with
5599 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5600 entails), but at least it can compile more of itself that way
5601 than it used to be able to, and various buglets which were uncovered
5602 by trying to cross-compile itself that way have now been fixed.
5603 * This release breaks binary compatibility again. This time
5604 at least I've incremented the FASL file format version to 2, so that the
5605 problem can be detected reliably instead of just causing weird errors.
5606 * various new style warnings:
5607 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5608 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5609 ** using the lexical binding of a variable named in the *FOO* style
5610 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5611 as specified by ANSI.
5612 * *RANDOM-STATE* is no longer automatically initialized from
5613 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5614 default behavior of the system is to repeat its behavior every time
5615 it's run. If you'd like to change this behavior, you can always
5616 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5617 old convention there was no comparably easy way to get the system to
5618 repeat its behavior every time it was run.
5619 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5620 FTYPE declarations has been removed, in favor of their ANSI
5621 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5622 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5623 the types of their sequence arguments can be determined at compile time.
5624 This is done through a new open code expansion for MAP which eliminates
5625 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5626 argument types can be determined at compile time.
5627 * The optimizer now transforms COERCE into an identity operation when it
5628 can prove that the coerced object is already of the correct type. (This
5629 can be a win for machine generated code, including the output of other
5630 optimization transforms, such as the MAP transform above.)
5631 * Credit information has been moved from source file headers into CREDITS.
5632 * Source file headers have been made more standard.
5633 * The CASE macro now compiles without complaining even when it has
5636 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5638 * (Note that the way that the PCL macroexpansions were rewritten
5639 to accommodate the change in DEFGENERIC below breaks binary
5640 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5641 not run under sbcl-0.6.2. Once we get out of alpha releases,
5642 i.e. hit release 1.0.0, we'll probably try to maintain binary
5643 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5644 and sbcl-1.4.4. Until then, however, it might be fairly common
5645 for maintenance releases to break binary compatibility.)
5646 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5648 * The reporting of unhandled signals has been changed to print some
5649 explanatory text as well as the report form. (Previously only
5650 the report form was printed.)
5651 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5652 it defines, so that the compiler no longer issues undefined function
5653 warnings for compiled-but-not-yet-loaded generic functions.
5654 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5655 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5656 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5657 section of the ANSI spec are supported.
5658 * The "" nickname for the "KEYWORD" package has been removed.
5659 The reader still handles symbol tokens which begin with a package marker
5660 as keywords, but it doesn't expose its mechanism for doing so in the
5661 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5662 * The system now issues STYLE-WARNINGs for contradictory TYPE
5663 proclamations. (Warnings for contradictory FTYPE proclamations would
5664 be nice too, but those can't be done usefully unless the type system
5665 is made smarter about FUNCTION types.)
5666 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5667 systematized, so that "*target-*.lisp is supposed to exist only on the
5668 target and imply that there's a related file which exists on the
5669 host, and *host-*.lisp is supposed to exist only on the host and imply
5670 that there's a related file which exists on the target. This involves a
5671 lot of renaming. Hopefully the acute confusion caused by the renaming
5672 will be justified by the reduction in chronic confusion..
5673 ** runtime-type.lisp -> early-target-type.lisp
5674 ** target-type.lisp -> late-target-type.lisp
5675 ** early-host-format.lisp -> early-format.lisp
5676 ** late-host-format.lisp -> late-format.lisp
5677 ** host-error.lisp -> misc-error.lisp
5678 ** early-error.lisp -> early-target-error.lisp
5679 ** late-error.lisp -> late-target-error.lisp
5680 ** host-defboot.lisp -> early-defboot.lisp
5681 ** code/misc.lisp -> code/target-misc.lisp
5682 ** code/host-misc.lisp -> code/misc.lisp
5683 ** code/numbers.lisp -> code/target-numbers.lisp
5684 ** code/early-numbers.lisp -> numbers.lisp
5685 ** early-host-type.lisp -> early-type.lisp
5686 ** late-host-type.lisp -> late-type.lisp
5687 ** host-typep.lisp -> typep.lisp
5688 ** load.lisp -> target-load.lisp
5689 ** host-load.lisp -> load.lisp
5690 ** host-disassem.lisp -> disassem.lisp
5691 ** host-insts.lisp -> insts.lisp
5692 ** byte-comp.lisp -> target-byte-comp.lisp
5693 ** host-byte-comp.lisp -> byte-comp.lisp
5694 ** host-signal.lisp -> signal.lisp
5695 ** host-defstruct.lisp -> defstruct.lisp
5696 ** late-target-type.lisp -> deftypes-for-target.lisp
5697 Furthermore, several other previously target-only files foo.lisp (e.g.
5698 hash-table.lisp and random.lisp) have been split into a target-and-host
5699 foo.lisp file and a target-only target-foo.lisp file, with their key type
5700 definitions in the target-and-host part, so that the cross-compiler will
5701 know more about target types.
5702 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5703 gone away. In their place are various *BACKEND-FOO* variables
5704 corresponding to the slots of the old structure.
5705 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5706 into the target SBCL has been fixed.
5707 * The chill.lisp system for loading cold code into a running SBCL
5709 * Support for the CMU CL "scavenger hook" extension has been removed.
5710 (It was undocumented and unused in the CMU CL sources that SBCL was
5711 derived from, and stale in sbcl-0.6.1.)
5712 * Various errors in the cross-compiler type system were detected
5713 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5714 (enabling various consistency checks). Many of them were fixed,
5715 but some hard problems remain, so the compiler is back to
5716 running without *TYPE-SYSTEM-INITIALIZED* for now.
5717 * As part of the cross-compiler type system cleanup, I implemented
5718 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5719 * I have started adding UNCROSS calls throughout the type system
5720 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5721 on cross-compiler input files will be able to go away, and various
5723 * CONSTANTP now returns true for quoted forms (as explicitly required
5726 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5728 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5729 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5730 (MAKE-LIST -1). In the longer term, it ought to become true
5731 that declarations are assertions even at SAFETY 1. For now, it's not
5732 quite true even at SAFETY 3, but it's at least more nearly true..
5733 (Note that this change seems to increases the size of the system by
5734 O(5%) and to decrease the speed of the compiler by 20% or more.)
5735 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5736 for the problem of printing dozens of lines of distracting information
5737 about low-level system machinery as part of the top stack frame
5738 on entry to the debugger when an undefined function was called.
5739 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5740 is not reset to COMMON-LISP-USER.
5741 * Compilation of stuff related to dyncount.lisp has been made conditional
5742 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5743 smaller. The various dyncount-related symbols have been moved into
5744 a new "SB-DYNCOUNT" package.
5745 * tty-inspect.lisp has been renamed to inspect.lisp.
5746 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5747 feature has gone away. (When we eventually port to other flavors of
5748 libc and/or Unix, we'll try to make the differences between flavors
5749 invisible at the user level.)
5750 * Various other *FEATURES* tags, and/or their associated conditionals,
5751 have been removed if obsolescent, or given better documentation, or
5752 sometimes given more-mnemonic names.
5754 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5756 * tidied up "make.sh" script
5757 * tidied up system directory structure
5758 * better "clean.sh" behavior
5759 * added doc/FOR-CMUCL-DEVELOPERS
5760 * many many small tweaks to output format, e.g. removing possibly-confusing
5761 trailing #\. character in DESCRIBE-INSTANCE
5762 * (EQUALP #\A 'A) no longer signals an error.
5763 * new hashing code, including EQUALP hashing
5764 * tidied up Lisp initialization and toplevel
5765 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5766 * command line argument processing
5767 * added POSIX-GETENV function to deal with Unix-ish environment variables
5768 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5769 terminating SBCL on EOF
5770 * non-verbose GC by default
5771 * There is no more "sbcl" shell script; the sbcl file is now the C
5772 runtime executable (just like CMU CL).
5773 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5775 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5776 symbol and package information as Lisp native symbol and package objects
5777 instead of strings naming symbols and strings naming packages. This way,
5778 whenever packages are renamed (as in warm init), debug information is
5779 transformed along with everything else.
5780 * tweaked the optimization policy declarations which control the building
5781 of SBCL itself. Now, among other things, the system no longer saves
5782 source location debugging information. (This helps two problems at once
5783 by reducing SBCL size and by keeping SBCL from trying to look for its
5784 sources -- which may not exist -- when reporting errors.)
5785 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5786 debugging and testing purposes
5787 * cleaned up printing, making the printer call PRINT-OBJECT for
5788 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5789 methods, giving nearly-ANSI behavior
5790 * converted almost all special variables to use *FOO* naming convention
5791 * deleted PARSE-TIME functionality, since it can be done portably
5792 * moved some files out of cold init into warm init
5793 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5795 * regularized formatting of source files
5796 * added an install.sh script
5797 * fixed ridiculous memory usage of cross-compiler by making
5798 compiler/alloc.lisp not try to do pooling unless it can hook
5799 itself into the GC of the cross-compilation host. Now the system
5800 builds nicely on my old laptop.
5801 * added :SB-ALLOC in target-features.lisp-expr
5802 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5803 was not implemented)
5804 * re-did condition handling and note reporting in the compiler. Notes
5805 are no longer handled by signalling conditions. Style warnings
5806 and warnings are handled more correctly and reported in such a way
5807 that it's easy to find one or the other in your output (so that you
5808 can e.g. figure out which of many problems caused COMPILE-FILE to
5810 * changed the severity of several compiler warnings from full WARNING
5811 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5812 compiler note reporting so that it doesn't use the condition system
5813 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5814 COMPILE-FILE command)
5815 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5816 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5817 no longer supported, since their implementation was deeply intertwingled
5818 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5819 * removed bogus "support" for compiler macros named (SETF FOO), and
5820 removed the compiler macro for SETF INFO (but only after making a fool
5821 of myself on the cmucl-imp mailing list by posting a bogus patch for
5822 DEFINE-COMPILER-MACRO..)
5823 * Compiled files containing forms which have side effects on the Lisp
5824 reader (such as DEFPACKAGE forms) are now handled more correctly.
5825 (Compiler queuing of top level lambdas has been suppressed by setting
5826 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5827 * deleted various currently-unused source files, e.g. gengc.lisp. They
5828 may be added back at some point e.g. when porting to other architectures,
5829 but until they are it's distracting to distribute them and to try to
5831 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5832 there were so many of them they're just distractions, and UNCROSS is
5833 known to be able to handle the current sources
5834 * moved PROFILE functionality into TRACE, so that it will be clear
5835 how the wrapping and unwrapping of functions when you profile them
5836 interacts with the wrapping and unwrapping of functions when you
5837 trace them. (Actually, the functionality isn't there yet, but at least
5838 the interface specification is there. Hopefully, the functionality will
5839 arrive with some future maintenance release.)
5840 * removed host-oops.lisp
5841 * changed signature of QUIT function to allow UNIX-CODE argument
5842 * fixed READ-SEQUENCE bug
5843 * tweaked verbose GC output so that it looks more like the progress
5844 output that ANSI specifies for functions like LOAD
5845 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5846 * added <http://sbcl.sourceforge.com> to the banner information printed by