1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.42
3 * incompatible change: FD-STREAMS no longer participate in the serve-event
4 event-loop by default. (lp#316072)
5 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
6 affects streams from CL:OPEN.
7 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
8 default, but this is liable to change: applications needing serve-event
9 for socket streams should explicitly request it using :SERVE-EVENTS T
11 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
13 * enhancement: CLOS effective method functions and defclass slot typechecking
14 function now have debug names for use in backtraces and profiles.
15 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
17 * enhancement: symbols are printed using fully qualified names in several
18 error and warning messages which are often associated with package
19 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
20 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
21 thanks to Andrew Golding)
22 * bug fix: reading /proc files on Linux works. (lp#425199)
23 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
25 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
26 breaking code that tried to write the value of a printer control variable.
27 (lp#581564, thanks to Stas Boukarev)
28 * bug fix: WRITE compiler macro did not handle output stream designators
29 correctly. (lp#598374, thanks to Stas Boukarev)
30 * bug fix: better availability of names of foreign functions in backtraces
31 on Linux. (lp#626962, thanks to Stas Boukarev)
32 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
33 lp#627581, thanks to Josh Elsasser and Jim Wise)
34 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
35 thanks to Josh Elsasser)
36 * bug fix: using aliases for builtin classes as defmethod specializers
37 without adding DEFTYPEs for them works. (lp#618387)
38 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
40 * bug fix: legally dynamic-extent lists and vectors used as
41 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
42 * bug fix: inline-expansion creating references to dead lambda-variables
43 (lp#454681, thanks to Alexey Dejneka)
44 * bug fix: better error message for bogus numerical arguments to RANDOM.
45 (lp#598986, thanks to Stas Boukarev)
46 * bug fix: the compiler occasionally inlined references from incompatible
47 environments occurs. (lp#308951)
48 * bug fix: the compiler threw an error when trying to compile a local
49 function (labels or flet) known to take a specialized complex argument.
50 (not in launchpad, reported by sykopomp in #lispgames)
51 * bug fix: package-locks failed to protect against compile-time effects of
52 DEFUN when the symbol previously had a macro definition. (lp#576637)
53 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
54 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
55 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
56 * bug fix: evaluation in debugger REPL works using the global context when
57 in frames that do not have sufficient debug information.
58 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
60 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
63 changes in sbcl-1.0.42 relative to sbcl-1.0.41
65 ** Cross-compilation host is now specified to make.sh using
66 command-line argument --xc-host=<command> instead of a positional
67 argument. (thanks to Daniel Herring)
68 ** Install location can be specified to make.sh using command-line
69 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
70 * optimization: The default implementation of
71 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
72 * enhancement: Explicit memory barrier operations are now available for use
73 by multithreaded code. See documentation for details.
74 * enhancement: Experimental support for threading on Linux/PPC.
75 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
76 * bug fix: EXPT signals an error if first argument is a zero and second
77 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
78 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
79 (lp#576594, thanks to Roman Marynchak)
80 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
81 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
83 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
84 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
85 cached, leading to many fewer expensive calls to
86 COMPUTE-APPLICABLE-METHODS.
87 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
88 CLASS argument, search for and call an appropriate optimized ctor function
90 * bug fix: WRITE always returns the correct value.
92 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
93 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
94 * bug fix: Name conflicts between symbols passed as arguments to a single
95 call to IMPORT no longer add multiple symbols with the same name to the
96 package (detectable via DO-SYMBOLS).
97 * bug fix: support building without the dlshim on darwin x86 and x86-64
99 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
101 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
102 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
104 * bug fix: linkage-table entries on PPC now no longer overflow their
105 space allocation (potentially causing crashes if they are written out
107 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
108 platforms, preventing the GC from seeing stale pointers on the control
109 stack in subsequent GCs (which would, and does, break invariants).
110 * bug fix: 32-bit unicode external formats now work on big-endian systems.
111 * bug fix: Literal characters with code points greater than about 32767
112 now work on PPC UNICODE builds.
113 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
114 high order bits are explicitly cleared out. In some contrived situations,
115 this could lead to wrong results in mixed real/complex float arithmetic.
116 * bug fix: Fix function/macro redefinition warnings when building with
117 clisp. (lp#576787, thanks to Josh Elsasser)
118 * new platform: experimental support for ppc/openbsd (thanks to Josh
120 * bug fix: Floating-point traps now work on ppc/linux.
122 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
123 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
124 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
125 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
126 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
127 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
128 SB-THREAD:GRAB-MUTEX.
129 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
130 contain additional data structures and tools for concurrent programming;
131 at the moment it contains a lock-free queue, and a lock-free mailbox
133 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
134 GET-MUTEX but takes &key rather than &optional parameters. Also added
135 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
137 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
138 SB-THREAD:WAIT-ON-SEMAPHORE.
139 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
141 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
142 conditions to defer the deadline for forever.
143 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
145 * enhancement: errors from NO-APPLICABLE-METHOD and
146 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
147 generic function call.
148 * enhancement: SB-BSD-SOCKET improvements
149 ** sockets and socket streams now have a more informative printed
150 representation based on the corresponding SOCKET-NAME and
152 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
154 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
155 CL:CLOSE when appropriate, and no longer disassociates the stream
156 from the socket if close failed. (lp#543951)
157 * improvements to the instrumenting profiler
158 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
159 ** optimization: counters no longer use locks for the overflow mode.
160 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
161 incurred an off-by-one miscount.
162 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
163 * enhancement: improved DEFMETHOD pretty-printing.
164 * enhancement: perform range reduction when arguments are too large for
165 x87's transcendentals (instead of returning 0). (lp#327192)
166 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
167 some of CL-PPCRE's macros. (lp#570079)
168 * enhancement: our machine code is slightly less hostile to valgrind on
170 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
171 to Robert Swindells and Aleksej Saushev)
172 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
173 * bug fix: a rare case of startup-time page table corruption.
174 * bug fix: a semaphore with multiple waiters and some of them unwinding due
175 to timeouts could be left in an inconsistent state.
176 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
177 * bug fix: misoptimization of multiplication by one in
178 (SB-C::FLOAT-ACCURACY 0) policies.
179 * bug fix: miscounts in SB-PROFILE.
180 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
181 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
182 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
183 up itself" (March 2010) for further details.
184 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
185 against length of the list if the element is found before the specified
186 END is reached. (thanks to Alec Berryman, lp#554385)
187 * bug fix: errors signalled during package graph modification no longer
188 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
189 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
190 :SB-DOC feature. (lp#552564)
191 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
192 * bug fix: more robust runtime executable path detection. (lp#375549)
193 * bug fix: GCD always returns positive values. (lp#413680)
194 * bug fix: Converting division to multiplication by reciprocal handles
196 * bug fix: We were too eager in eliding range reduction tests on x87.
197 The maximal magnitude is 2^63, not 2^64.
198 * bug fix: Transforms for TRUNCATE don't die when the result is completely
200 * bug fix: Maybe restore buildability on Alpha.
201 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
203 * bug fix: RANDOM-STATE can be printed readably again.
204 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
205 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
206 types) could result in type mismatches during compilation.
208 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
209 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
210 stack frame thrown from.
211 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
212 compiler optimization qualities inside dynamic extent of its body.
213 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
214 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
216 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
217 constraint propgation, allowing better compilation eg. when used to
218 access structures with WITH-SLOTS. (lp#520366)
219 * optimization: the compiler is now more aware of the type of the underlying
220 storage vector for multidimensional simple arrays resulting in better code
221 for accessing such arrays.
222 * optimization: passing NIL as the environment argument to TYPEP no longer
223 inhibits optimizing it. (lp#309788)
224 * optimization: more efficient register usage when handling single-float
225 arguments on x86-64. (thanks to Lutz Euler)
226 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
227 pre-allocated temporary vectors. (lp#496249)
228 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
229 in :INITIAL-CONTENTS. (lp#523612)
230 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
231 functions. (lp#524707)
232 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
233 WITH-SLOTS usages during compilation.
234 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
235 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
236 all x86oid platforms with :UD2-BREAKPOINTS target feature.
237 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
238 instruction (tested on x86oid linux with ud2-breakpoints).
239 * bug fix: slam.sh now works on win32.
240 * bug fix: better differences of numeric types. (lp#309124)
241 * bug fix: arrays declared intersection and union types can have their
242 upgraded element type derived. (lp#316078)
243 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
244 threads started during profiling. (lp#472499)
245 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
247 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
248 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
249 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
250 values instead of signaling an error. (lp#309093)
251 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
253 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
254 declarations (lp#497321)
255 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
256 and failed to detect circular lists (lp#452008)
257 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
259 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
260 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
261 due to it, so that handlers can run.
262 * bug fix: reparsing undefined types if they have become defined since
264 * bug fix: missing &REST type in a proclamation for a function with both
265 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
266 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
267 expanded calls (lp#542174)
268 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
269 than just at toplevel form.
271 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
272 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
273 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
274 but work on type specifiers.
275 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
276 to name a type specifier.
277 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
278 specifier is valid where "valid" basically means "would be accepted as
279 second argument of TYPEP".
280 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
281 returns the function's declared, or derived FTYPE.
282 * new feature: SB-POSIX now supports accessing the d_ino member of
283 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
284 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
285 provide for seeding a RANDOM-STATE object with user-provided data or
286 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
287 attempt to initialize the returned state from the operating system's
288 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
289 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
290 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
291 * bug fix: Fix grammar and style issues for the docstrings of
292 printer-related variables and functions. (Thanks to mon_key; launchpad
294 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
296 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
297 in a row even though a handler defered the deadline long into the
299 * bug fix: A deadline handler was run without interrupts enabled for a
300 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
301 in infinitely spinning, non-killable threads.
302 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
303 before reaching the erring stack frame.
304 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
305 real power. (launchpad bug lp#525949)
306 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
307 GENCGC platforms. (launchpad bug lp#529014)
308 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
309 (launchpad bug lp#525916)
310 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
311 (Thanks to Robert Goldman)
313 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
314 * optimization: ROUND with a single single-float or double-float argument
315 is properly inlined when possible.
316 * optimization: Slightly better code is generated for integer<->float
317 conversions and for single-float<->double-float conversions on x86-64.
318 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
319 code for 32-bit and 64-bit rotations on x86-64.
320 * bug fix: The install script changes the ownership of directories as well
321 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
322 launchpad bug lp#508485)
323 * bug fix: TRUNCATE with a single single-float or double-float argument is
324 properly inlined when possible. (launchpad bug lp#489388)
325 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
326 no longer causes a compiler error on x86 and ppc.
327 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
328 always relative to *READTABLE* rather than the passed argument.
330 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
331 * minor incompatible change: threading support is now enabled by default
333 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
335 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
336 are now caught and reported just like errors during macroexpansion.
337 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
338 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
339 * enhancement: ASDF systems can now depends on SB-QUEUE.
340 * fixes and improvements related to Unicode and external formats:
341 ** bug fix: error handling and restart usage in the ucs-2 external format
343 ** there is now an implementation of the ucs-4 external format.
344 ** the utf-16 and utf-32 external formats are supported.
345 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
346 in the environment. setenv() and unsetenv() are also provided. (reported by
347 Fare Rideau; launchpad bug lp#460455)
348 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
349 loading. This ensures sensible errors for .FASL files from other
350 implementations on case-insensitive filesystems. (reported by Willem
351 Broekema; launchpad bug lp#489417)
352 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
353 Willem Broekema; launchpad bug lp#489698).
354 * bug fix: some minor code rearrangements to reenable warning-free building
355 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
356 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
358 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
361 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
362 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
363 * improvement: support O_LARGEFILE access to files larger than 2GB on
364 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
365 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
366 definitions for methods specializing on the passed class itself.
367 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
368 definitions for methods specializing on the passed class itself, or on
370 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
371 about itself during the build (e.g. for M-? in Slime), if this flag is
372 enabled in customize-target-features.lisp. This will increase the core
373 size by about 5-6mb, though, so it's mostly interesting to SBCL
375 * new feature: various GENCGC tuning parameters have been experimentally
376 documented and exported from SB-EXT. See documentation for details.
377 * fixes and improvements related to Unicode and external formats:
378 ** the Unicode character database has been upgraded to the
379 Unicode 5.2 standard, giving names and properties to a number of new
380 characters, and providing a few extra characters with case
382 ** improvement: restarts for providing replacement input/output on coding
383 errors for fd-stream external formats.
384 ** improvement: where :<encoding> is a keyword corresponding to an
385 external format the system supports, it is now possible to specify
386 (:<encoding> :replacement <character>) as an external format which will
387 automatically substitute <character> on encoding or decoding errors for
388 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
390 ** improvement: the file streams underlying the standard streams (such as
391 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
392 which uses the replacement mechanism to handle encoding errors,
393 preventing various infinite error chains and unrecoverable I/O
395 ** minor incompatible change: the utf-8 external format now correctly
396 refuses to encode Lisp characters in the surrogate range (char-codes
397 between #xd800 and #xdfff).
398 ** fix a typo preventing conversion of strings into octet vectors
399 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
401 ** fix a bug in the octet multibyte handling of decoding errors and the
402 USE-VALUE restart. (launchpad bug lp#314939)
403 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
404 restart on fd-stream decoding errors.
405 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
406 error is near the end of file.
407 ** fix a double-error case in unibyte octet conversions, when the first
408 use of USE-VALUE is ignored.
409 ** fix bugs in handling of undefined code points in unibyte encodings.
410 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
411 streams after an UNREAD-CHAR.
412 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
413 object is allocated in a boxed region of dynamic space.
414 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
415 fork with multiple Lisp threads running is made, instead of going
416 ahead with unpredictable consequences. (reported by Leslie Polzer)
417 * bug fix: uses of slot accessors on specialized method parameters within
418 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
419 error while finalizing the class. This fix may cause classes with slot
420 accessors to be finalized later than previously. (reported by Lars Rune
421 Nøstdal; launchpad bug lp#473699)
422 * bug fix: restore buildability on the MIPS platform. (regression from
423 1.0.30.38, reported by Samium Gromoff)
424 * bug fix: inspecting closures is less likely to fail with a type error.
425 * bug fix: no timer starvation when setting the system clock back.
426 (launchpad bug lp#460283)
427 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
428 standard pprint dispatch table as specified by CLHS.
429 * bug fix: give CLISP a hint about a type declaration to enable it to build
430 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
432 * bug fix: correctly dump literal objects in defaulting forms of arglists.
433 (reported by Attila Lendvai; launchpad bug lp#310132)
434 * bug fix: distinguish in type specifiers between arrays that might be
435 complex and arrays that are definitely complex. (launchpad bug lp#309129)
436 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
437 type. (reported by Levente Mészáros; launchpad bug lp#485972)
438 * bug fix: setting the value of a symbol-macro within a method in the
439 presence of type declarations works properly again. (reported by Iban
440 Hatchondo; launchpad bug lp#485019)
442 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
443 * optimization: faster FIND and POSITION on strings of unknown element type
444 in high SPEED policies. (thanks to Karol Swietlicki)
445 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
447 * improvement: better error signalling for bogus parameter specializer names
448 in DEFMETHOD forms (reported by Pluijzer)
449 * bug fix: DELETE-FILE once again works on logical pathnames (regression
451 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
453 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
454 removes previous default initargs (reported by Lars Rune Nøstdal and
456 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
457 lambda-lists. (reported by Peter Seibel)
458 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
459 correctly when starting from an executable core without saved runtime
460 options (reported by Faré Rideau, thanks to Zach Beane)
461 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
462 an optimization note instead. (reported by Martin Cracauer)
463 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
464 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
465 new process group if it doesn't need to share stdin with the sbcl
466 process. (thanks to Leslie Polzer)
467 * bug fix: SATISFIES could be misoptimized to refer to a local function.
468 (reported by Stanislaw Halik)
470 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
471 * improvement: stack allocation is should now be possible in all nested
472 inlining cases: failure to stack allocate when equivalent code is manually
473 open coded is now considered a bug.
474 * improvements related to Unicode:
475 ** the Unicode character database has been upgraded to the
476 Unicode 5.1 standard, giving names and properties to a number of new
477 characters, and providing a few extra characters with case
479 ** the system now recognizes and produces names for Unicode Hangul
481 ** the EBCDIC-US external-format is now supported for octet operations
482 (as well as for stream operations).
483 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
484 be used to output toplevel compile-time effects into a separate .CFASL
486 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
487 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
489 * optimization: TRUNCATE on known single- and double-floats is upto 25%
491 * optimization: division of floating point numbers by constants uses
492 multiplication by reciprocal when an exact reciprocal exists.
493 * optimization: multiplication of single- and double-floats floats by
494 constant two has been optimized.
495 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
496 sufficient type information is available. (thanks to Leslie Polzer)
497 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
498 known structure objects are as efficient as defstruct generated accessors.
499 * optimization: unused vector creation can now be optimized away.
500 * improvement: ASDF systems can now depends on SB-INTROSPECT.
501 * improvement: a STYLE-WARNING is signalled when a generic function
502 clobbers an earlier FTYPE proclamation.
503 * improvement: the compiler is able to track the effective type of
504 generic function across method addition and removal even in the
505 absence of an explicit DEFGENERIC.
506 * improvement: DESCRIBE now reports on symbols naming undefined
507 but assumed or declared function as well.
508 * improvement: recompilation of systems using SB-GROVEL now works
509 (thanks to Leslie Polzer)
510 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
511 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
513 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
514 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
515 well as user defined declaration names.
516 ** VARIABLE-INFORMATION is now aware of alien variables.
517 * improvement: improved address space layout on OpenBSD (thanks to Josh
519 * improvement: pretty-printing of various Lisp forms has been improved
520 (thanks to Tobias Rittweiler)
521 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
522 unused were deleted in safe code. (reported by John Fremlin)
523 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
525 * bug fix: some out-of-line array predicates were missing (reported by
527 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
529 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
530 (thanks to Larry D'Anna)
531 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
532 as well. (reported by Josh Elsasser)
533 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
534 leading to possible attempts to delete the same file twice. See docstring
535 on DELETE-FILE for details. (reported by John Fremlin)
536 * bug fix: DELETE-FILE once again deletes the file named by the pathname
537 designator argument, rather than its truename. (reported by Luis
539 * bug fix: the low-level debugger had 32-bit assumptions and was missing
540 information about some array types. (thanks to Luis Oliveira)
541 * bug fix: moderately complex combinations of inline expansions could
542 be miscompiled if the result was declared to be dynamic extent.
543 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
544 form (+ <variable> <integer>) were miscompiled under certain
546 * bug fix: in some cases no compiler note about failure to stack allocate
547 was emitted, even if the objects were in fact heap allocated.
548 * bug fix: minor violation of "otherwise inaccessible" rule for stack
549 allocation could cause objects users might reasonably expect to
550 be heap allocated to be stack allocated.
551 * bug fix: DESCRIBE signalled an error for generic functions under
552 certain circumstances. (thanks to Leslie Polzer)
553 * bug fix: Fixed spelling of an error message.
555 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
556 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
557 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
558 of SB-THREAD:THREAD-ERROR-THREAD.
559 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
560 * new feature: docstrings for local and anonymous functions are no longer
561 discarded. (thanks to Leslie Polzer)
562 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
563 values in other threads.
564 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
565 about object allocation.
566 * optimization: division of a real float by a complex float is implemented
567 with a specialised code sequence.
568 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
569 keywords is an order of magnitude faster.
570 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
571 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
572 methods, and similarly for non-standard metaclass classes as long as there
573 are no methods additional on MAKE-INSTANCE.
574 * optimization: more efficient type-checks for FIXNUMs when the value
575 is known to be a signed word on x86 and x86-64.
576 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
577 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
579 * optimization: compiler is smarter about delegating argument type checks to
581 * optimization: several character functions are now compiled somewhat more
582 efficiently. (reported by Lynn Quam)
583 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
584 * improvement: less unsafe constant folding in floating point arithmetic,
585 especially for mixed complex/real -float operations.
586 * optimization: constant double and single floats are stored in native
587 unboxed format on x86[-64].
588 * optimization: smarter code for arithmetic operations with constant floats,
589 complex floats, or integers on x86[-64].
590 * optimization: smarter code for conjugate/multiplication of float complexes
591 and abs/negate of floats on x86-64.
592 * optimization: more efficient complex float and real float operations on
594 * improvement: complex float division is slightly more stable.
595 * improvement: DESCRIBE output has been reworked to be easier to read and
596 contains more pertinent information.
597 * improvement: failure to provide requested stack allocation compiler notes
598 provided in all cases (requested stack allocation not happening without a
599 note being issued is now considered a bug.)
600 * bug fix: SB-POSIX exports the documented types and functions
601 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
602 types. (reported by "abhi")
603 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
604 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
605 (thanks to Paul Khuong)
606 * bug fix: looping around HANDLER-CASE could silently consume stack space
607 on each iteration. (reported by "foobar")
608 * bug fix: better error signalling when calls to functions seeking elements
609 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
610 (reported by Tobias Rittweiler)
611 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
612 directory components now works as it used to. (various prolems reported by
613 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
614 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
615 (reported by Elliot Slaughter, thanks to Stas Boukarev)
616 * bug fix: bogus undefined variable warnings from fopcompiled references to
617 global variables. (thanks to Lars Rune Nøstdal)
618 * bug fix: foreign function names should now appear in backtraces on
619 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
620 * bug fix: SETF compiler macro documentation strings are not discarded
622 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
623 (thanks to Alex Plotnick)
624 * bug fix: SLEEP accepts large integer arguments, truncating them to
625 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
626 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
627 * bug fix: compiler notes for expensive slot type checks could be emitted
628 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
630 changes in sbcl-1.0.29 relative to 1.0.28:
631 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
632 https://bugs.launchpad.net/sbcl
633 Bugs can be reported directly there, or by sending email to
634 sbcl-bugs@lists.sourceforge.net
635 (no subscription required.)
636 * minor incompatible change: under weak type checking policy integer
637 types are weakened less aggressively.
638 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
639 allowed to return, which causes SBCL to quit with exit status 0. Previously
640 if the function returned with a small integer return value, that value
641 was accidentally reused as the exit status.
642 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
643 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
644 :HASH-FUNCTION argument. Refer to user manual for details.
645 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
647 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
648 microseconds since the Unix epoch on all platforms.
649 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
650 allows the compiler to safely elide boundedness checks for special
652 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
653 the symbol, prohibits both lexical and dynamic binding. This is mainly an
654 efficiency measure for threaded platforms, but also valueable in
656 * new feature: UNC pathnames are now understood by the system on Windows.
657 * optimization: the compiler uses a specialized version of FILL when the
658 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
660 * optimization: accesses to potentially non-simple arrays where element type
661 is known are 50% faster.
662 * optimization: compiler now generates faster array typechecking code.
663 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
665 * optimization: multidimensional array accesses in the absence of type
666 information regarding array rank are approximately 10% faster due to
667 open coding of ARRAY-RANK.
668 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
669 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
671 * optimization: result of call to VECTOR can now be stack allocated.
672 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
673 as long as the resulting array is one-dimensional and has a known
674 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
675 length of the list matches the known length of the vector does not
676 allocate the list as an intermediate step. Ditto for VECTOR and simple
678 * optimization: MAKE-ARRAY can now stack allocate in the presence of
679 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
680 known element type, and is known to be simple and one dimensional.
681 * improvement: SBCL now emits a compiler note where stack allocation was
682 requested but could not be provided (not in all cases, unfortunately)
683 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
684 * improvement: pretty-printing loop has been implemented properly. (thanks
685 to Tobias Rittweiler)
686 * documentation: CLOS slot typechecing policy has been documented.
687 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
688 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
689 pointer, leading to memory faults. (thanks to Bart Botta)
690 * bug fix: better floating point exception handling on x86/OpenBSD.
691 (thanks to Josh Elsasser)
692 * bug fix: exit status from QUIT when called under --script was lost
693 (reported by Hubert Kauker)
694 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
695 same implementation of FILL to initialize the array, even if a more
696 efficient one was available (reported by Stas Boukarev, thanks to
698 * bug fix: potential miscompilation of array stack allocation on x86 and
699 x86-64. (reported by Time Tossavainen)
700 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
701 result in their subforms being treated as top level forms. (reported by
703 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
704 than a machine register could leave garbage in the high bits of the
705 result register (bug 316325).
706 * bug fix: disable address space randomization Linux/x86-64 as well,
707 not just x86-64. (reported by Ken Olum)
708 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
709 generate incorrect code.
710 * bug fix: #201; type inference for CONS and ARRAY types could derive
711 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
712 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
713 could not be assigned to or bound with PROGV. (reported by Lorenz
715 * bug fix: the value of CL:- in the inspector was the previous expression
716 evaluated rather than the expression being evaluated.
717 * bug fix: constants can no longer be locally declared special.
718 * bug fix: signals delivered to threads started from foreign land (read:
719 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
720 thread by blocking all signals and resignalling.
721 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
722 from :INITFORM, if any.
724 changes in sbcl-1.0.28 relative to 1.0.27:
725 * a number of bugs in cross-compilation have been fixed, with the ultimate
726 result that building under (at least) clisp should be much more reliable.
727 * minor incompatible changes: echo-streams now propagate unread-char to the
728 underlying input stream, and no longer permit unreading more than one
730 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
731 frames, allowing for instance more reliable backtraces.
732 * improvement: the debugger REPL can now reference lexical variables
733 by name directly for code compiled with (DEBUG 3).
734 * improvement: errors from malformed declarations now have better source
735 paths associated with them. (thanks to Tobias Rittweiler)
736 * optimization: faster local calls on x86/x86-64
737 * bug fix: some error messages for out-of-bound array indexes confused the
738 index and the bound. (thanks to Stas Boukarev)
739 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
741 * bug fix: running regressions tests in shells without OSTYPE set now works.
742 (reported by Harald Hanche-Olsen)
743 * bug fix: more robust static space exhaustion signalling from
744 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
745 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
746 docstring away instead of storing it under names such as (LAMBDA (X)).
747 (reported by Leslie Polzer)
748 * bug fix: timers could go off in the wrong order, be delayed indefinitely
749 (thanks to Ole Arndt for the patch)
750 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
751 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
752 potentially-invalid effective methods in its cache.
753 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
754 instances as well (thanks to Paul Khuong)
755 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
756 SB-POSIX:WAITPID and their C equivalents.
757 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
759 changes in sbcl-1.0.27 relative to 1.0.26:
760 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
761 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
762 * improvement: the system either recovers from stack exhaustion or dies
763 properly as opposed to leaving the user uncertain of whether the handler
764 trampled on some random memory next to the stack or having to rely on
765 --lose-on-corruption (which is still a good idea to use in production
766 because stack exhaustion can happen in signal handlers which will likely
768 * bug fix: fix gc related interrupt handling bug on ppc (regression from
769 1.0.25.37, reported by Harald Hanche-Olsen)
770 * bug fix: work around signal delivery bug in darwin (regression from
771 1.0.25.44, reported by Sidney Markowitz)
772 * bug fix: fix ERROR leaking memory (reported by David Thompson)
774 changes in sbcl-1.0.26 relative to 1.0.25:
775 * incompatible change: an interruption (be it a function passed to
776 INTERRUPT-THREAD or a timer function) runs in an environment where
777 interrupts can be enabled. The interruption can use
778 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
779 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
780 potentially running out of stack. Keep in mind that in the absence
781 of WITHOUT-INTERRUPTS some potentially blocking operation such as
782 acquiring a lock can enable interrupts.
783 * incompatible change: GC-OFF and GC-ON are removed, as they were
784 always unsafe. Use WITHOUT-GCING instead.
785 * new feature: runtime option --disable-ldb
786 * new feature: runtime option --lose-on-corruption to die at the
787 slightest hint of possibly non-recoverable errors: running out of
788 memory, stack, alien stack, binding stack, encountering a memory
789 fault, etc. In the absence of --lose-on-corruption a warning is
791 * enhancement: detect binding stack exhaustion
792 * enhancement: detect alien stack exhaustion on x86/x86-64
793 * improvement: generally more stable and reliable interrupt handling
794 * improvement: there is a per thread interruption queue,
795 interruptions are executed in order of arrival
796 * improvement: a repeating timer reschedules itself when the it has
797 finished, but expiration times are spaced equally. If an
798 expiration time is in the past it will trigger after a short grace
799 period that may give a chance to other things to run.
800 * optimization: slightly faster gc on multithreaded builds
801 * optimization: faster WITHOUT-GCING
802 * bug fix: when JOIN-THREAD signals an error, do it when not holding
803 important locks so that the debugger/handler doesn't produce
804 recursive errors or deadlock.
805 * bug fix: real-time signals are not used anymore, so no more
806 hanging when the system wide real-time signal queue gets full.
807 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
809 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
810 * bug fix: fix random memory faults related to interrupts on alpha
811 * bug fix: fix random memory faults related to interrupts on sparc
812 * bug fix: fix deadlocks related to starting threads
813 * bug fix: fix deadlines on locks on futex platforms
814 * bug fix: restore errno in signal handlers
815 * bug fix: fix deadlocks related to hash tables
816 * bug fix: fix deadlocks in pcl
818 changes in sbcl-1.0.25 relative to 1.0.24:
819 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
820 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
821 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
822 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
823 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
824 better name and does not return values so stale on multiprocessor systems.
825 Also, HOLDING-MUTEX-P was added for about the only sane usage of
827 * improvement: unithread builds keep track of MUTEX-VALUE.
828 * improvement: reading from a TWO-WAY-STREAM does not touch the output
829 stream anymore making it thread safe to have a concurrent reader and
830 a writer, for instance, in a pipe.
831 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
832 arguments, making compiler-macros for SETF-functions able to inspect
833 their constant arguments.
834 * improvement: COMPILE-FILE reports times with millisecond accuracy
835 (thanks to Luis Oliveira)
836 * optimization: CHAR-CODE type derivation has been improved, making
837 TYPEP elimination on subtypes of CHARACTER work better. (reported
838 by Tobias Rittweiler, patch by Paul Khuong)
839 * bug fix: setting alien structure fields of type struct by value now
840 computes the right offset for the memory copy.
841 * bug fix: compilation problem involving inlined calls to aliens with
842 result type VOID. (reported by Ken Olum)
843 * bug fix: #235a; sequential inline expasion in different policies no
844 longer reuses the functional from the previous expansion site.
845 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
846 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
847 * bug fix: named ENUMs in multiply-referenced alien record types no longer
848 cause an implied type redefinition. Regression from 1.0.21.29.
849 * bug fix: sign-extension of small signed return values now works with C
850 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
851 * improvements to the Windows port:
852 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
853 Westfold, thanks to Rudi Schlatte)
855 changes in sbcl-1.0.24 relative to 1.0.23:
856 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
857 vector of a multidimensional SIMPLE-ARRAY.
858 * new feature: the system now signals a continuable error if standard
859 readtable modification is attempted. (thanks to Tobias Rittweiler)
860 * new feature: DIRECTORY has been extended with a non-standard keyword
861 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
862 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
863 has been robustified and documented better. (thanks to Robert Goldman)
864 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
865 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
866 * tradeoff: constant FORMAT control strings are now compiled unless
867 SPACE > SPEED (previously only when SPEED > SPACE.)
868 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
870 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
872 * bug fix: lexical type declarations are now correctly reported by
873 SB-CLTL2. (reported by Larry D'Anna)
874 * bug fix: STRING-TO-OCTETS did not handle :START properly when
875 using UTF-8 as external format. (thanks to Luis Oliveira)
876 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
877 are signalled correctly. (thanks to Stas Boukarev)
878 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
879 designator. (thanks to Tobias Rittweiler)
880 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
881 designator, and returns T instead of the function. (thanks to
883 * bug fix: direct superclasses of STANDARD-CLASS and
884 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
885 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
886 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
887 when no class with the named slot yet exists no longer causes a
888 compile-time style-warning.
889 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
890 in safe code. (reported by Didier Verna)
891 * bug fix: #430; nested structure constructors can stack allocate.
892 * bug fix: on some 64-bit platforms dynamic space size was truncated
893 to #xffff0000 bytes. (reported by Benjamin Lambert)
894 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
895 REPL unusable. (reported by Daniel Herring)
896 * bug fix: return values of READ-SEQUENCE did not take :START into
897 account on file streams, regressions since 1.0.12.22. (reported by
898 Thomas Russ, patch by Paul Khuong)
899 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
900 method specializer used to confuse permuation vector optimization.
901 * bug fix: system inserted bogus implicit type declarations for local
902 special variables in DEFMETHOD bodies.
903 * bug fix: #354; duplicated frames in backtraces due to
904 non-tail-call-optimized XEPs to functions with return type NIL
906 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
907 initializes structure object slots according to DEFSTRUCT initforms,
908 and DEFSTRUCT forms :INCLUDEind structure classes defined using
909 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
910 (reported by Bruno Haible and Stephen Wilson)
911 * bug fix: #395; fill-pointer output streams used now support
912 element-type BASE-CHAR as well.
913 * bug fix: compiler error when attempting to derive return value of
914 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
916 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
918 * bug fix: Mac OS X binaries should now be portable between Leopard
921 changes in sbcl-1.0.23 relative to 1.0.22:
922 * enhancement: when disassembling method functions, disassembly
923 for the associated fast function is also produced.
924 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
926 * optimization: printing with *PRINT-PRETTY* true is now more
927 efficient as long as the object being printed doesn't require
928 special handling by the pretty printer.
929 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
930 now interact correctly with type declarations.
931 * partial bug fix: PCL detects infinite recursion during wrapper
932 validation. (thanks to Attila Lendvai)
933 * bug fix: #426; nested function calls are inlined properly.
934 Previously if FOO was an inline function, in calls of the form
935 (FOO (FOO ...)) the outer call was not inlined.
936 * bug fix: long long arguments passed in registers to alien
937 functions on PowerPC Linux and NetBSD are now handled correctly
938 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
940 changes in sbcl-1.0.22 relative to 1.0.21:
941 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
942 for the shared object in the current directory, but passes the native
943 namestring of the designated pathname to the operation system's shared
944 object loading function as-it.
945 * minor incompatible change: --disable-debugger toplevel option now takes
946 effect before processing of initialization files and --eval or --load
948 * new feature: new commandline argument: --script, which supports
949 shebang lines. See documentation for details. (based on work by
951 * new feature: SAVE-LISP-AND-DIE can save current values of
952 --dynamic-space-size and --control-stack-size in the executable core,
953 causing it to skip normal runtime option processing. See documentation
954 for details. (thanks to Zach Beane)
955 * enhancement: inoccous calls to EVAL or generic functions dispatching
956 on subclasses of eg. STREAM no longer cause compiler notes to appear.
957 * enhancement: the system no longer resignals errors from --load and
958 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
959 associated with the original error to be lost. (thanks to Ariel
961 * enhancement: :DONT-SAVE keyword argument has been added to
962 LOAD-SHARED-OBJECT for controlling interaction with
963 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
964 the effects of an earlier LOAD-SHARED-OBJECT call.
965 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
966 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
967 provided. (reported by Cedric St-Jean)
968 * bug fix: circularity handling in the reader did not treat raw
969 structure slots correctly. (reported by Cedric St-Jean)
970 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
971 file descriptors when there were none.
972 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
973 was broken. (reporteed by Willem Broekema)
974 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
975 pathnames without a directory.
976 * bug fix: COMPILE-FILE did not warn about undefined variable
977 references at toplevel, and LOAD of the resulting fasl did
979 * bug fix: functions with non-required arguments used to end up with
980 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
981 * bug fix: redefining a function with non-required arguments didn't
982 update the system's knowledge about its call signature properly.
983 * bug fix: fixed #431; incompatible alien record type redefinitions
984 are detected and handled. (reported by Neil Haven)
985 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
986 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
988 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
989 after alien stack frames.
990 * bug fix: strings passed to mk{s,d}temp lacked null termination
992 changes in sbcl-1.0.21 relative to 1.0.20:
993 * new feature: the compiler is able to track the effective type of a
994 generic function across method addition and removal.
995 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
996 appropriately typed structure slots without locking.
997 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
998 information like those gathered by TIME using a programming-friendly
1000 * new feature: TIME reports time taken even if the form performs a
1001 non-local transfer of control.
1002 * enhancement: reduced conservativism on GENCGC platforms: on
1003 average 45% less pages pinned (measured from SBCL self build).
1004 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1005 mutate constant symbols or violate declaimed type of the symbol.
1006 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1007 sleeping on the semaphore in heavily contested semaphores.
1008 * bug fix: semaphores and condition variables were not interrupt
1010 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1011 owned by other threads anymore.
1012 * bug fix: FIND on lists called KEY outside the specified
1013 subsequence. (reported by budden)
1014 * bug fix: LOG doesn't use single-float intermediate results when
1015 given mixed integer and double-float arguments, leading to better
1016 precision. (reported by Bob Felts)
1017 * bug fix: LOG with base zero returned values of inconsistent type.
1019 changes in sbcl-1.0.20 relative to 1.0.19:
1020 * minor incompatible change: OPTIMIZE qualities
1021 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1022 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1023 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1024 * documentation: some slot access efficiency guidelines have been
1025 added to the user manual.
1026 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1027 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1028 as ASSOC and MEMEBER.
1029 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1030 to more efficient EQ-comparison versions more often.
1031 * optimization: enhanced derivation of DOLIST iteration variable type
1033 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1035 * optimization: runtime lookup of function definitions can be
1036 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1037 * optimization: compiler is able to derive the return type of
1038 (AREF (THE STRING X) Y) as being CHARACTER.
1039 * optimization: CLRHASH on empty hash-tables no longer does pointless
1040 work. (thanks to Alec Berryman)
1041 * optimization: REPLACE deftransforms don't punt when :START1 or
1043 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1044 no longer emits a code deletion note. (reported by Andrew
1046 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1047 functions with an odd number of &OPTIONAL arguments, a &REST
1048 argument, and one or more &KEY arguments at the call site.
1049 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1050 arguments appeared at call sites as well.
1051 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1052 READ-LINE &co can no longer read from them afterwards. (reported
1054 * bug fix: fixed #427: unused local aliens no longer cause compiler
1055 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1057 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1058 alien-stack leakage. (reported by Andy Hefner)
1059 * bug fix: PROGV signals an error when an attempt to violate declared
1060 type of a variable or bind a constant is made.
1061 * bug fix: SET signals an error when an attempt to violate declared
1062 type of a variable is made.
1063 * bug fix: restart computation during the execution of a restart
1064 test function no longer causes infinite recursion. (reported by
1066 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1067 signals an error. (thanks to Pierre Mai)
1068 * bug fix: EXPORT left symbol unexported in conflict situations.
1069 (thanks to Michael Weber)
1070 * bug fix: correctly handle name conflicts involving CL:NIL.
1071 (thanks to Michael Weber)
1072 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1073 conflicts arising from USEing package with conflicting symbols
1074 correctly. (thanks to Michael Weber)
1076 changes in sbcl-1.0.19 relative to 1.0.18:
1077 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1078 warnings that go otherwise unhandled will be muffled if they are
1079 of the type that's the value of this variable.
1080 * optimization: stack allocation is slightly more efficient on x86
1082 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1083 where a raw slot always is initialized using the initform whose
1084 type is not know sufficiently well a compile-time are now compiled
1085 correctly. (reported by John Morrison)
1086 * bug fix: compiler no longer makes erronous assumptions in the
1087 presence of non-foldable SATISFIES types.
1088 * bug fix: stack analysis missed cleanups of dynamic-extent
1089 arguments in non-let-converted calls to local functions.
1090 * improvements to the Windows port:
1091 ** adjusted address spaces for building on both Win32 and
1092 Win64. (thanks for John Connors)
1093 * fixed some bugs revealed by Paul Dietz' test suite:
1094 ** interval arithmetic during type derivation used inexact integer
1095 to single-float coercions.
1096 ** arithmetic operations involving large integers and single
1097 floats give the same results in compiled and interpreted code.
1098 ** deriving the result type of COERCE no longer signals an error
1099 if the derived type of the second argument is a MEMBER type
1100 containing invalid type specifiers.
1101 ** ADJOIN with constant NIL as second argument works correctly.
1102 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1104 changes in sbcl-1.0.18 relative to 1.0.17:
1105 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1106 profiles only the current thread.
1107 * minor incompatible change: changes to SYMBOL-VALUE of constants
1108 defined with DEFCONSTANT now signal an error.
1109 * enhancement: SB-SPROF now has support for wallclock profiling,
1110 and is also able to profile specific threads. REPORT output
1111 has also additional sorting options.
1112 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1114 * optimization: structure allocation has been improved
1115 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1116 ** out of line constructors are ~10% faster.
1117 ** inline constructors are ~15% faster.
1118 ** inline constructors are capable of dynamic extent allocation
1119 (generally on x86 and x86-64, in some cases on other platforms
1121 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1123 * optimization: file compiler is now able to coalesce non-circular
1124 lists, non-base strings, and bit-vectors. Additionally, constants
1125 are never referenced through SYMBOL-VALUE at runtime.
1126 * optimization: code defining methods on PRINT-OBJECT (and other
1127 generic functions in the COMMON-LISP package) now loads faster.
1128 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1130 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1131 fasl is now deleted. (reported by Attila Lendvai)
1132 * bug fix: READ-LINE always returned NIL for the last line in files.
1133 (reported by Yoshinori Tahara)
1134 * bug fix: more accurate disassembly annotations of foreign function
1135 calls. (thanks to Andy Hefner)
1136 * bug fix: trimming non-simple strings and non-string string
1137 designators when the there is nothing to trim works properly.
1138 (thanks to James Knight)
1139 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1140 (thanks to Travis Cross)
1141 * fixed some bugs revealed by Paul Dietz' test suite:
1142 ** NIL is a valid function name (regression at 1.0.13.38)
1143 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1144 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1145 fill pointers properly (regression at 1.0.12.23)
1146 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1147 displacement indices properly (regression at 1.0.12.23)
1149 changes in sbcl-1.0.17 relative to 1.0.16:
1150 * temporary regression: user code can no longer allocate closure
1151 variable storage on stack, due to bug 419 without explicitly
1152 requesting it. Please consult sbcl-devel for advice if you need to
1153 use this feature in the meanwhile.
1154 * new feature: runtime argument --control-stack-size can be used to
1155 adjust thread default control stack size.
1156 * enhancement: improved TIME output
1157 ** all times are reported using the measured accuracy (milliseconds
1158 for real and GC times, microseconds for everything else.)
1159 ** processor cycle counts on x86 and x86-64.
1160 ** interpreted forms are counted for both evaluator modes.
1161 ** number of lambdas converted by the compiler is reported.
1162 ** CPU percentage report (computed from real and total run time.)
1163 ** more comprehensive run time reporting, using a condenced format
1164 ** interperted form, lambda, and page fault counts are omitted
1166 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1168 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1169 * optimization: two argument forms of LAST are upto ~10% faster
1170 in normal SPEED policies.
1171 * optimization: NCONC no longer needs to heap cons its &REST list
1172 in normal SPEED policies.
1173 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1174 to Sidney Markowitz)
1175 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1176 regression since 1.0.9.1. (thanks to Eric Marsden)
1177 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1178 since 1.0.15.36. (thanks to Paul Khuong)
1179 * bug fix: LAST when always returned the whole list when given a bignum
1180 as the second argument.
1181 * bug fix: dynamic extent allocation of nested lists and vectors
1182 could leak to otherwise accessible parts.
1183 * bug fix: invalid optimization of heap-allocated alien variable
1185 * bug fix: fasl header checking is less vulnerable to different
1186 platform word lengths.
1187 * bug fix: more correct assembler syntax for GNU binutils
1188 2.18.50.0.4 support. (thanks to Marijn Schouten)
1189 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1191 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1192 declarations) successfully. (reported by Attila Lendvai)
1194 changes in sbcl-1.0.16 relative to 1.0.15:
1195 * minor incompatible change: revert the changes to sb-posix's error
1196 signaling added in 1.0.14.
1197 * minor incompatible change: change PROBE-FILE back to returning
1198 NIL whenever we can't get a truename, as was the case before 1.0.14.
1199 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1200 inherits from ERROR instead of just CONDITION.
1201 * new feature: SB-INTROSPECT can provide source locations for instances
1202 as well. (thanks to Tobias Rittweiler)
1203 * optimization: binding special variables now generates smaller code
1204 on threaded platforms.
1205 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1206 and cases where no :TEST is given but the compiler can infer that
1207 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1208 * optimization: better LOGNOT on fixnums.
1209 * optimization: modular arithmetic for a particular requested width
1210 is implemented using a tagged representation unless a better
1211 representation is available.
1212 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1213 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1214 for wellformedness and returns a specialized vector. (reported by
1215 Francois-Rene Rideau)
1216 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1217 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1218 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1219 unscheduling timer at the same time as another timer fires.
1220 * bug fix: don't reschedule timers for dead threads.
1221 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1222 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1223 bogus errors if select() was interrupted.
1224 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1226 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1227 * enhancement: cleaner backtraces for interactive interrupts, as
1228 well as other cases where the interesting frames used to be
1229 obscured by interrupt handling frames.
1230 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1231 now supported, and tracing a whole package using (TRACE "FOO") now
1232 traces SETF-functions as well.
1233 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1234 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1235 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1236 * unreadably printed representation of hash-tables now includes
1238 * bug fix: partially fixed #188: type propagation from assignments
1239 is now more efficient.
1240 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1241 'DOUBLE-FLOAT) are not flushable.
1242 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1243 full address of the object, and none of the tag bits.
1244 * bug fix: readably printing hash-tables now respects other printer
1245 control variables. (reported by Cedric St-Jean)
1246 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1247 keyword with MAKE-HASH-TABLE.
1248 * bug fix: export SB-POSIX:MKSTEMP.
1249 * bug fix: SORT was not interrupt safe.
1250 * bug fix: XREF accounts for the last node of each basic-block as
1252 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1253 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1254 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1255 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1256 create obsolete instances in the case of redefinition or
1257 obsoletion of a superclass. (thanks to Andy Hefner)
1258 * bug fix: Support for the Alpha architecture has been revived; it had
1259 suffered somewhat from lack of maintenance since sbcl-1.0.
1260 * improvements to the Windows port:
1261 ** The system detects the codepage to use at startup, instead of
1262 using the value from the saved core. (thanks to Kei Suzuki)
1264 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1265 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1266 (see documentation for details.)
1267 * revived support for OpenBSD (contributed by Josh Elsasser)
1268 * partially fixed bug #108: ROOM no longer suffers from occasional
1269 (AVER (SAP= CURRENT END)) failures.
1270 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1271 bodies no longer cause a WARNING to be signalled. (reported by
1273 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1274 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1275 the bug in TRUNCATE.) (reported by Michael Weber)
1276 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1277 no samples. (reported by Andy Hefner)
1278 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1279 no longer appear as (NIL ...) frames in backtraces.
1280 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1281 is now actually exported from SB-EXT as documented. (reported by
1283 * bug fix: sb-aclrepl now correctly understands how to inspect
1284 single-floats on 64-bit platforms where single-floats are not boxed.
1285 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1286 yet been finalized. (reported by Levente Meszaros)
1287 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1288 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1289 SBCL-specific optimize qualities.
1291 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1292 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1293 an executable in the search path, and does so in the child
1294 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1295 been removed; it can be found in the CVS history, for somebody who
1296 needs that search behavior (see the manual).
1297 * minor incompatible change: compiler policy re. weakening type
1298 checks has changed: now type checks are weakened only if SAFETY < 2
1300 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1301 unparsing of directory pathnames as files. Analogously,
1302 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1303 filename to parse into a directory pathname.
1304 * enhancement: implicit generic function creation now signals a
1305 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1306 users can bind handlers for and muffle around calls to LOAD.
1307 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1308 to be used (using the default stream external format), and allows
1309 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1310 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1311 strings and vectors whose element-type or simplicity is not fully
1312 known at compile-time.
1313 * optimization: STRING-TRIM and related functions no longer allocate
1314 a new string when no trimming needs to be performed. These functions
1315 are also faster than before when the input string has been declared
1317 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1318 * optimization: READ-LINE is significantly faster for files containing
1320 * optimization: non-open coded uses of character comparison operators
1321 (e.g. char=) no longer cons when called with more than one parameter
1322 on platforms supporting dynamic-extent allocation.
1323 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1324 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1325 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1327 * bug fix: some sequence functions elided bounds checking when
1329 * bug fix: too liberal weakening of union-type checks when SPEED >
1331 * bug fix: more bogus fixnum declarations in ROOM implementation
1334 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1335 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1336 :SYNCHRONIZED argument, which makes the hash-table safe for
1337 concurrent accesses (but not iteration.) See also:
1338 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1339 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1340 * optimization: CONCATENATE on strings is an order of magnitude faster
1341 in code compiled with (> SPEED SPACE).
1342 * optimization: SUBSEQ is ~50% faster on lists.
1343 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1344 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1345 END is smaller then START.
1346 * bug fix: SB-PROFILE will no longer report extra consing for nested
1347 calls to profiled functions.
1348 * bug fix: ROOM implementation had bogus fixnum declarations which
1349 could cause type-errors when calling ROOM on large images.
1350 * bug fix: if file compilation is aborted, the partial fasl is now
1351 deleted, and COMPILE-FILE returns NIL as the primary value.
1352 * bug fix: number of thread safety issues relating to SBCL's internal
1353 hash-table usage have been fixed.
1354 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1355 be returned from its body when the values were being returned
1356 using unknown-values return convection and the W-P-O was wrapped
1357 inside an UNWIND-PROTECT.
1358 * bug fix: sb-posix should now compile again under Windows, enabling
1359 slime to work again.
1361 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1362 * incompatible change: hash-table accessor functions are no longer
1363 automatically protected by locks. Concurrent accesses on the same hash-table
1364 from multiple threads can give inconsistent results or even corrupt the
1365 hash-table completely. Multi-threaded applications should do their own
1366 locking at the correct granularity. In the current implementation it is
1367 still safe to have multiple readers access the same table, but it's not
1368 guaranteed that this property will be maintained in future releases.
1369 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1370 and will signal an error at runtime.
1371 * enhancement: SB-THREAD package now exports a semaphore interface.
1372 * enhancement: CONS can now stack-allocate on x86 and
1373 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1375 * enhancement: nested lists can now be stack allocated on
1376 platforms providing stack allocation support.
1377 * enhancement: dynamic-extent support has been extended to support
1378 cases where there are multiple possible sources for the stack
1380 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1381 if the mutex is uncontested on Linux.
1382 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1383 as specified by the CLHS. (thanks to Tobias Rittweiler)
1384 * bug fix: NaN comparison now works on x86-64.
1385 * bug fix: CLOSE :ABORT T on a stream with pending output now
1387 * bug fix: instances of non-standard metaclasses using standard
1388 instance structure protocol sometimes missed the slot type checks
1390 * bug fix: known functions can be inlined in high-debug code.
1392 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1393 * minor incompatible change: the MSI installer on Windows no longer
1394 associates .lisp and .fasl files with the installed SBCL.
1395 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1396 on Windows. (thanks to Luis Oliviera)
1397 * new feature: SB-CLTL2 contrib module now implements
1398 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1399 * optimization: scavenging weak pointers is now more efficient,
1400 requiring O(1) instead of O(N) per weak pointer to identify
1401 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1402 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1403 method bodies using constant slot-names when the first argument is
1404 a specializer parameter for the method.
1405 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1406 names, when the class of the instance is a direct instance
1407 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1408 as slow as the constant slot-name case.)
1409 * optimization: member type construction is now O(N) instead
1411 * optimization: UNION and NUNION are now O(N+M) for large
1412 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1414 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1415 now more readable in environments like Slime which display it.
1416 (thanks to Tobias C. Rittweiler)
1417 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1418 was able to infer the correct argument type for the object on which
1419 the CAS operation was being performed.
1420 * bug fix: copy propagation interfered with parallel assignment
1421 semantics in local calls. (reported by Paul Khuong)
1422 * bug fix: the signed modular fixnum shift compiled to wrong code on
1423 x86 and x86-64. (spotted by a slight modification to some of
1426 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1427 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1428 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1429 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1431 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1432 and generic function now print the object identity for anonymous
1433 instances. (thanks to Attila Lendvai)
1434 * enhancement: as an extension to MOP, SBCL now supports SETF of
1435 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1436 (thanks to Attila Lendvai)
1437 * enhancement: sb-cover has an alternate annotation mode which puts
1438 the form annotations at the car of the form, instead of annotating
1439 it completely. The benefit of this mode is that it shows better
1440 which forms were instrumented by the compiler.
1441 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1442 by printer control variables. (reported by Dan Corkill)
1443 * bug fix: system leaked memory when delayed output was performed by
1444 the OS in smaller chunks then expected. (thanks to David Smith)
1445 * bug fix: system leaked memory when file streams were not closed
1447 * bug fix: large objects written to slow streams that were modified
1448 after the write could end up with the modified state written to
1449 the underlying file descriptor.
1450 * bug fix: multiple threads operating in parallel on the same stream
1451 could cause buffer-overflows.
1452 * bug fix: source location information is stored correctly
1453 (broken since 1.0.6). This bug would generally show up as the
1454 Slime debugger highlighting the wrong form when the sldb-show-source
1456 * bug fix: Branch forms are again annotated as branches in the sb-cover
1458 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1459 on x86-64. (reported by Gregory Vanuxem)
1460 * bug fix: EQUALP could return wrong results for structures with raw
1461 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1462 word). (reported by Vjacheslav Fyodorov)
1463 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1466 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1467 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1468 atomic compare-and-swap operations on threaded platforms.
1469 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1470 allows assigning a global minimum value to optimization qualities
1471 (overriding proclamations and declarations).
1472 * enhancement: closed over variables can be stack-allocated on x86
1474 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1476 * optimization: slot definition lookup is now O(1). This speeds up
1477 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1478 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1479 * optimization: ASSOC and MEMBER can now be open-coded for all
1480 combinations of keyword arguments when second argument is constant
1481 and SPEED >= SPACE. In other cases a specialized version is
1483 * bug fix: using obsoleted structure instances with TYPEP and
1484 generic functions now signals a sensible error.
1485 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1486 (reported by Kristoffer Kvello)
1487 * bug fix: backtrace construction is now more careful when making
1488 lisp-objects from pointers on the stack, to avoid creating bogus
1489 objects that can be seen by the GC.
1490 * bug fix: defaulting of values in contexts expecting more than 7
1491 variables now works on x86-64. (reported by Christopher Laux)
1492 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1494 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1495 as the property-list of a symbol.
1496 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1497 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1498 situations requested, are once again file-compileable. (reported
1501 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1502 * MOP improvement: support for user-defined subclasses of
1503 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1504 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1505 the expansion of DEFMETHOD, is responsible for generating a form
1506 which creates a list of specializers when evaluated. Additional
1507 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1508 debugging and introspective support.
1509 * minor incompatible change: the (unsupported) spinlock interface
1510 has changed: free spinlock now has the value NIL, and a held spinlock
1511 has the owning thread as its value.
1512 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1513 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1515 * enhancement: name of a socket-stream is now "a socket" instead of
1516 "a constant string".
1517 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1518 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1519 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1520 for generic functions. (Thanks to Tobias C. Rittweiler)
1521 * optimization: bignum printing speed has been improved by 20-40%
1522 (depending on the bignum size.)
1523 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1525 * bug fix: the cache used by the CLOS to store precomputed effective
1526 methods, slot offsets, and constant return values is now thread and
1528 * bug fix: generic function dispatch function updating is now thread
1529 and interrupt safe (in the sense that the known issues have been
1531 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1532 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1533 * bug fix: asdf systems with dependencies to the SB-POSIX or
1534 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1535 * bug fix: interrupt safety of applicable method computation has been
1538 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1539 * new contrib: sb-cover, an experimental code coverage tool, is included
1540 as a contrib module.
1541 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1542 significantly faster.
1543 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1544 produce more efficient code on x86-64 if the compiler can determine
1545 that (+ INDEX <constant>) does not require a bounds check and FOO
1546 has an element type at least 8 bits wide.
1547 * enhancement: a new, experimental synchronous timeout facility is
1548 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1549 * enhancement: when a symbol name conflict error arises, the
1550 conflicting symbols are always printed with a package prefix.
1551 (thanks to Kevin Reid)
1552 * enhancement: stepping is now once again supported on the SPARC and
1553 MIPS platforms. (It is also now more likely to work on CheneyGC
1555 * enhancement: sb-sprof can now also track and report accurate call
1557 * bug fixes: the treatment of non-standard subclasses of
1558 SB-MOP:SPECIALIZER is more correct.
1559 * incompatible change: PURIFY no longer copies the data from the
1560 dynamic space into the static and read-only spaces on platforms
1561 that use the generational garbage collector
1562 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1564 * bug fix: GC race condition occasionally resulting in crashes with
1565 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1567 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1569 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1570 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1571 * bug fix: an asynchronous interrupt could previously leave the
1572 system running with GC inhibited.
1573 * bug fix: a DECLARE form evaluated at top-level now causes an error
1574 rather than silently (or verbosely) returning NIL.
1575 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1576 result in a error being signalled due to source form lookup errors.
1577 (reported by Peter Graves)
1579 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1580 * incompatible change: removed writer methods for host-ent-name,
1581 host-ent-addresses -- changing the values did not update the DNS
1583 * minor incompatible change: changed experimental JOIN-THREAD interface
1584 * documentation: the manual now lists reader and writer methods
1585 in class slot documentation sections. (thanks to Richard M Kreuter)
1586 * documentation: unwinding from asyncronous events has been
1587 documented as unsafe.
1588 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1589 in multithreaded application code.
1590 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1591 platforms. (thanks to James Anderson for the optimization hint)
1592 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1594 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1595 variants no longer cons.
1596 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1597 their NOT- variants no longer cons.
1598 * optimization: EQUAL hash tables no longer use SXHASH for objects
1599 of all data types, but instead use an EQL hash for types for which
1600 EQUAL is the same as EQL.
1601 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1602 are significantly faster.
1603 * optimization: new STRING-OUTPUT-STREAM implementation is much
1604 faster for large outputs and conses 30% less on average.
1605 * enhancement: XREF information is now collected for references made
1606 to global variables using SYMBOL-VALUE and a constant argument.
1607 * enhancement: SIGINT now causes a specific condition
1608 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1609 * bug fix: FILE-POSITION used to signal an error in some cases where
1610 ANSI requires it to return NIL.
1611 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1612 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1613 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1615 * bug fix: bad type declaration in the CLOS implementation has
1616 been fixed. (reported by James Anderson)
1617 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1618 (thanks to Lutz Euler)
1619 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1620 required by the CLHS. (reported by Samium Gromoff)
1621 * bug fix: dead unbound variable references now signal an error.
1622 (reported by Marco Monteiro)
1623 * bug fix: / with an unused value was being deleted in safe code.
1624 (thanks to Marco Monteiro and Kevin Reid)
1625 * bug fix: number of characters that can be written onto a single
1626 line in a file is unlimited.
1627 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1628 been fixed by inhibiting interrupts for when GC is disabled.
1629 * bug fix: some interrupt safety issues with GETHASH, (SETF
1630 GETHASH), CLRHASH and REMHASH have been fixed.
1631 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1632 specifier no longer causes infinite recursion.
1633 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1634 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1635 * bug fix: an &environment argument with the correct variable information
1636 is passed to macros that are expanded during byte compilation.
1637 (reported by Samium Gromoff)
1638 * bug fix: a logic error was causing the hash function for bignums to
1639 have excessive amounts of collisions. (reported by Faré Rideau)
1640 * bug fix: modifying the contents of an array could change the return
1641 value of SXHASH on that array, which is only allowed for strings
1642 and bit vectors. (bug introduced in 0.9.16)
1643 * improvement: the x86-64/darwin port now passes all tests (except
1644 for the debugger tests) but should still be considered
1645 experimental until this is fixed.
1646 * improvement: a style-warning is signaled for CASE (etc) clauses with
1647 duplicate keys. (thanks to Kevin Reid)
1648 * improvement: macos/x86 and macos/x86-64 now use mach exception
1649 handlers for dealing with illegal instructions (for trapping and
1650 error handling) and memory protection violations (for GC).
1652 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1653 * new platform: experimental support for x86-64/darwin (MacOS).
1654 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1655 and getnameinfo sockets functions are used instead of gethostbyaddr
1656 and gethostbyname, on platforms where the newer functions are available.
1657 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1659 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1660 don't print the startup banner, but behave as if --noinform was passed
1661 as a command line argument. (thanks to Kevin Reid)
1662 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1663 * optimization: code using alien values with undeclared types is much faster.
1664 * optimization: the compiler is now able to open code SEARCH in more cases.
1665 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1666 * bug fix: using standardized COMMON-LISP special variables as loop
1667 variables no longer signals bogus package lock violations. (reported
1669 * bug fix: declaring local loop variables to be of a range-limited type
1670 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1671 (reported by Andras Simon)
1672 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1673 bugs remain on x86-64.)
1674 * bug fix: the #= and ## reader macros now interact reasonably with
1675 funcallable instances.
1676 * bug fix: type-checks for function arguments were compiled using the
1677 compiler policy settings of the wrong lexical environment (in 1.0.2
1679 * bug fix: SHADOW accepts characters as string designators, as required
1680 by the spec (thanks to Eric Marsden)
1681 * bug fix: fixed GC safety issues when foreign functions are called with
1682 non-base strings as arguments
1683 * bug fix: more consistent error output for fatal-compiler-warnings, like
1685 * bug fix: functions with proper names were showing up as NIL in
1686 backtraces (reported by Edi Weitz, regression in 1.0.2)
1688 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1689 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1690 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1691 produce more efficient code on the x86 if the compiler can determine
1692 that (+ INDEX <constant>) does not require a bounds check and FOO
1693 has an element type at least 8 bits wide.
1694 * bug fix: references to undefined variables are handled the same way
1695 in toplevel forms as in the normal compiler
1696 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1698 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1699 (thanks to Jon Buller)
1700 * improvement: faster compilation times for complex functions
1701 * improvement: added readlink support to SB-POSIX (thanks to Richard
1704 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1705 * improvement: experimental support for mach exception handling on
1706 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1708 * improvement: support for GBK external format.
1709 (thanks to Chun Tian (binghe))
1710 * improvement: the debugger now displays variables that have been closed
1711 over, in code compiled with (DEBUG 2) or higher
1712 * improvement: support for executable cores on NetBSD (thanks to
1714 * new feature: added a RESTART-FRAME debugger command
1715 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1716 be used to provide an implementation for FILE-POSITION on Gray streams
1717 (thanks to Eric Marsden)
1718 * new feature: add syslog, openlog and closelog support to SB-POSIX
1719 (thanks to Richard Kreuter)
1720 * optimization: the function call overhead in code compiled with
1721 a high DEBUG optimization setting is significantly
1722 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1723 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1724 (thanks to Tony Martinez)
1725 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1726 evaluated once (reported by Kevin Reid)
1727 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1728 works again (thanks to Kilian Sprotte)
1729 * bug fix: an error is signaled for tagbodies with duplicate tags
1730 (thanks to Stephen Wilson)
1731 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1732 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1733 stack frames from alien callbacks.
1734 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1735 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1736 65k pages (thanks to David Woodhouse)
1737 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1739 changes in sbcl-1.0.1 relative to sbcl-1.0:
1740 * new platform: FreeBSD/x86-64, including support for threading.
1741 * new feature: the compiler stores cross-referencing information
1742 about function calls (who-calls), macroexpansion (who-macroexpands)
1743 and special variables (who-binds, who-sets, who-references) for code
1744 compiled with (< SPACE 3). This information is available through the
1745 sb-introspect contrib.
1746 * new feature: users may subclass SEQUENCE, and have instances of
1747 these classes interoperate with standard Common Lisp functions if
1748 a number of methods are defined. (This feature is experimental
1749 and the interface subject to change based on feedback from SBCL
1750 users and the general community)
1751 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1752 x86/x86-64, rather than the previous fixed depth of 8
1753 * improvement: another pthread back-end of mutex "pthread-futex".
1754 * bug fix: non-ascii command-line arguments are processed correctly
1755 (thanks to Yaroslav Kavenchuk)
1756 * bug fix: non-required arguments were not passed correctly when a method
1757 defined using DEFMETHOD was called from a mop-generated method using
1758 CALL-NEXT-METHOD (reported by Pascal Costanza)
1759 * bug fix: recursion is now permitted in accessors through
1760 SLOT-UNBOUND. (reported by Pascal Costanza)
1761 * bug fix: an error was signaled at startup if the HOME environment
1762 variable was defined, but had an empty value (reported by Peter Van Eynde)
1763 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1764 signal a PROGRAM-ERROR, not a BUG.
1765 * bug fix: SB-POSIX:READDIR works when built with large file support.
1766 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1768 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1769 for better automatic indentation support. (thanks to Matt Pillsbury)
1770 * optimization: loading generic functions no longer takes O(n^2) time,
1771 proportional to the amount of methods in the generic function
1772 (reported by Todd Sabin and Jeremy Brown)
1773 * optimization: the FIND and POSITION family of sequence functions
1774 are significantly faster on arrays whose element types have been
1776 * improvements to the Windows port:
1777 ** Intermittent heap corruption problems have been fixed. (thanks
1778 to Alastair Bridgewater)
1779 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1781 ** Lisp is able to unwind foreign exception frames from alien
1782 callbacks. (thanks to Alastair Bridgewater)
1784 changes in sbcl-1.0 relative to sbcl-0.9.18:
1785 * improvement: experimental support for threading on FreeBSD/x86.
1786 (thanks to NIIMI Satoshi)
1787 * improvement: runtime option --dynamic-space-size can be used
1788 to set the size of the dynamic space reserved on startup.
1789 * improvement: floating point modes in effect are now saved in
1790 core, and restored on startup.
1791 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1792 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1793 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1794 threads are not running after *SAVE-HOOKS* have run.
1795 * improvement: writes to CLOS instance slots are type-checked in code
1796 compiled with (SAFETY 3)
1797 * improvement: floating-point exception handling on FreeBSD (thanks to
1799 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1800 (thanks to Zach Beane)
1801 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1803 * improvement: added support for the Shift-JIS external format.
1804 (contributed by NIIMI Satoshi)
1805 * improvement: callbacks are supported on Linux/PPC. (thanks to
1807 * bug fix: compiler bug triggered by a (non-standard) VALUES
1808 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1809 * bug fix: file compiler no longer confuses validated and already
1810 dumped structurres. (reported by Kaersten Poeck)
1811 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1812 fill-pointer signals a type-error as required. (thanks to
1814 * bug fix: disassemly of funcallable instances works.
1815 * bug fix: single stepping on PPC.
1816 * bug fix: fix thread-safety problems in the type system (generally
1817 manifesting as nonsensical errors like "STRING is a bad type specifier
1818 for sequences" or "The value 1 is not of type FIXNUM")
1819 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1820 (reported by Josip Gracin)
1821 * bug fix: an error is signaled for attempts to displace arrays with
1822 incompatible element types (thanks to Mario Mommer)
1823 * bug fix: more correct handling of wide characters in debug info
1824 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1825 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1826 and don't cause extra consing
1827 * optimization: MAP and MAP-INTO are significantly faster on vectors
1828 whose elements types have been declared.
1829 * Improvements to SB-SPROF:
1830 ** Support for allocation profiling
1831 ** Reduced profiling overhead, especially for long profiling runs
1832 * Improvements to the Windows port:
1833 ** floating point exceptions are now reported correctly.
1834 ** stack exhaustion detection works partially.
1835 ** more accurate GET-INTERNAL-REAL-TIME.
1836 ** better RUN-PROGRAM behaviour in case of errors in the child
1838 ** PROBE-FILE now simplifies pathnames correctly.
1839 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1840 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1841 1st 1970 (although time timezone data will be unreliable).
1842 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1844 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1845 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1846 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1848 * bug fix: two potential GC deadlocks affecting threaded builds.
1849 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1850 returns T (reported by Anton Kazennikov)
1851 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1852 with non-variable places
1853 * bug fix: remove a race condition in the setting of
1854 funcallable-instance functions, this should make threaded CLOS
1855 code more stable against memory faults.
1856 * bug fix: corruption of specials when unbinding is interrupted by an
1857 asynchronous unwind (reported by Hannu Koivisto)
1858 * improvement: the debugger will now also display local variables that
1859 are only used once, for code compiled with a DEBUG optimization quality
1862 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1863 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1864 * incompatible change: External-format support for FFI calls. The
1865 SB-ALIEN:C-STRING no longer implies an ASCII
1866 external-format. Instead the string is subject to external-format
1867 conversion. Additionally return values of type SB-ALIEN:C-STRING
1868 are by default of type (SIMPLE-ARRAY CHARACTER), not
1869 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1870 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1871 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1872 * incompatible change: SB-EXT package no longer contains the
1873 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1874 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1876 * incompatible change: the single-stepper is no longer available
1877 on Alpha, Mips and Sparc platforms.
1878 * minor incompatible change: the direct superclasses of
1879 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1880 not (STANDARD-OBJECT FUNCTION). This makes the
1881 class-precedence-lists of GENERIC-FUNCTION and
1882 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1884 * minor incompatible change: the default stream external format on
1885 non-unicode SBCL is no longer detected from the locale, but is always
1887 * new feature: Add a version of evaluator that uses an interpreter instead
1888 of the compiler. EVAL still uses the compiler by default, to switch it
1889 to use the interpreter, set the value of the variable
1890 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1891 * minor incompatible change: the single-stepper REPL has been merged
1892 with the normal debugger (see the "Stepping" heading of the debugger help
1893 for more details). The debugger command STEP will no longer switch
1894 to the single-stepper REPL.
1895 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1896 for a type now works.
1897 * bug fix: loading of default sysinit file works. (thanks to Leonid
1899 * bug fix: better detection of circularities in the file-compiler.
1900 (reported by Marco Monteiro)
1901 * bug fix: the CL pathname functions now work with files that have
1902 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1903 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1904 systems with Unix98 pty semantics.
1905 * bug fix: ASDF-INSTALL will now work with bsd tar.
1906 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1908 * bug fix: timers expiring in dead threads no longer cause a
1909 type-error (reported by Paul "Nonny Mouse").
1910 * bug fix: thanks to more lightweight single-stepper instrumentation,
1911 code compiled with (DEBUG 3) will compile and execute significantly faster,
1912 and will have more accurate type-inferencing than before
1913 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1914 whose bindings are modified
1915 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1916 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1917 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1918 CL:SOFTWARE-VERSION with proper version
1920 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1921 * feature: implemented the READER-METHOD-CLASS and
1922 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1923 as specified by AMOP.
1924 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1926 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1927 (thanks to Lutz Euler)
1928 * optimization: hashing of general arrays and vectors has been
1929 improved. (reported by Any Fingerhut)
1930 * enhancement: SB-INTROSPECT is now able to find definitions of
1931 profiled functions. (thanks to Troels Henriksen)
1932 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1933 as well, allowing compiler-macros for SETF-functions to expand.
1934 * enhancement: step-instrumentation no longer wraps known
1935 single-value functions with multiple-value context, allowing
1936 better type inference.
1937 * fixed bug #337: use of MAKE-METHOD in method combination now works
1938 even in the presence of user-defined method classes. (reported by
1939 Bruno Haible and Pascal Costanza)
1940 * fixed bug #339(c): if there are applicable methods not part of any
1941 long-form method-combination group, call INVALID-METHOD-ERROR.
1942 (reported by Bruno Haible)
1943 * fixed bug #361: the :FUNCTION initarg in the protocol for
1944 initialization of methods can now be used to override
1945 internally-produced optimized functions. (reported by Bruno
1947 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1948 system-provided lambda expression no longer cause warnings about
1949 unbound #:|pv-table| symbols.
1950 * bug fix: improved the handling of type declarations and the
1951 detection of violations for keyword arguments with non-constant
1953 * bug fix: potentially erronous calls to PATHNAME and
1954 MERGE-PATHNAMES were being flushed in some cases.
1955 (reported by Richard Kreuter)
1956 * bug fix: compiled calls to TYPEP were mishandling obsolete
1957 instances. (reported by James Bielman and Attila Lendvai)
1958 * bug fix: format strings with ~> without matching ~< no longer
1959 trigger an AVER, but signal an understandable error instead.
1960 (reported by Antonio Martinez)
1961 * bug fix: specifying an output-file without a pathname-type for
1962 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1963 of input-file instead of "fasl". (reported by Robert Dodier)
1964 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1965 (reported by James Y Knight).
1966 * bug fix: compiler-macros-function did not consider the environment
1967 argument for shadowing by local functions.
1968 * bug fix: compiler-macros expansion was inhibited by local INLINE
1970 * bug fix: inline expansions of known functions were subject to
1971 step-instrumentation in high debug policies, leading to problems
1972 with type-inference.
1973 * bug fix: compiler failed to differentiate between different CONS
1974 types in some cases.
1975 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1976 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1977 * bug fix: #368: incorrect use of expressed vs. upgraded array
1979 * bug fix: #306a: more precise unions of array types.
1980 * thread-safety improvements:
1981 ** CONDITION-WAIT could return early on Linux, if the thread was
1982 interrupted and subsequently continued with SIGCONT.
1983 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1985 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1986 * added support for the ucs-2 external format. (contributed by Ivan
1988 * minor incompatible change: pretty printing of objects of type
1989 (cons symbol) is, in the default pprint-dispatch-table, now
1990 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1992 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1993 called later in a class's lifetime, possibly as late as when the
1994 first instance of the class is created. Previously,
1995 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1996 class became finalizeable.
1997 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1998 for multibyte external-format streams. (thanks to "vbzoli")
1999 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2000 with :ALLOCATION :CLASS inherited from superclasses of the
2002 * fixed bug: anonymous classes can now be created using the :NAME
2003 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2004 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2005 * fixed bug: core-files saved with :EXECUTABLE T can again be
2006 executed when SBCL_HOME isn't set. (reported by James Knight)
2007 * fixed bug: toplevel LOCALLY forms with declarations could
2008 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2009 * fixed bug: printing from several different threads using different
2010 values of *print-case* could cause invalid output, due to
2011 some internal special variables of the printer not being bound
2012 thread-locally (reported by Max Mikhanosha)
2013 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2014 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2015 (reported by Pascal Costanza)
2016 * fixed bug: FINALIZE-INHERITANCE is called from
2017 REINITIALIZE-INSTANCE on classes when the class has previously
2018 been finalized, as required by AMOP.
2019 * minor code generation optimizations:
2020 ** better register allocation in CLOS dispatching functions
2021 ** overflow detection when coercing signed bytes to fixnums on x86-64
2022 ** is now implemented with one IMUL instruction instead of three shifts
2023 ** more efficient bit-vector access on x86 and x86-64
2024 ** more efficient access to raw structure slots on x86 and x86-64
2025 * fixed some bugs revealed by Paul Dietz' test suite:
2026 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2027 return its argument.
2029 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2030 * feature: thread support on Solaris/x86, and experimental thread support
2032 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2034 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2035 default method for SLOT-UNBOUND.
2036 * minor incompatible change: prevent the user from specializing the
2037 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2038 somewhat counter to the intent of the protocol, I (CSR) think, and
2039 additionally it just doesn't work in SBCL as currently
2040 implemented, thanks to optimizations (that are always valid for
2041 the other three SLOT-VALUEish functions, but not for the setter).
2042 * minor incompatible change: the :SB-LDB feature is now enabled by
2043 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2044 the low-level debugger.
2045 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2046 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2047 down to an SB-SYS:FD-STREAM, allowing direct communication in
2048 more cases. Temporary files and pipes are still used as a fallback
2050 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2051 on the non-reentrant C functions localtime(3) and gmtime(3).
2052 * bug fix: global optimization policy was not visible in LOCALLY and
2054 * bug fix: class objects can be used as specializers in methods.
2055 (reported by Pascal Costanza)
2056 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2057 with a type error. (reported by blitz_ on #lisp)
2058 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2059 failed with a type error. (reported by Pascal Bourguignon)
2060 * bug fix: merging pathnames against defaults with :DIRECTORY
2061 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2062 (reported by James Y Knight)
2063 * bug fix: saving large (>2GB) cores on x86-64 now works
2064 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2065 constant index and a (simple-array (signed-byte 32)) array
2066 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2067 error (patch by Robert J. Macomber)
2068 * feature: TIME now displays the amount of run-time spent in GC
2069 * bug fix: The debugger now does a better job of respecting
2070 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2071 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2072 workaround for bug 403.)
2073 * bug fix: floating point exception handling now works on FreeBSD
2074 (thanks to NIIMI Satoshi)
2075 * fixed some bugs revealed by Paul Dietz' test suite:
2076 ** MISC.641: LET-conversion were not supposed to work in late
2078 * improvements to the Win32/x86 port:
2079 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2080 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2082 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2083 * new feature: source path information is generated for macro-expansion
2084 errors for use in IDE's like Slime (thanks to Helmut Eller)
2085 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2086 * bug fix: compiler does not loop forever on an invalid type in
2088 * improvement: compilation of most CLOS applications is significantly
2090 * optimization: added a limited bytecode compiler for simple toplevel
2091 forms, speeding up compilation and FASL loading
2092 * bug fix: the statistical profiler now properly distinguishes anonymous
2095 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2096 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2097 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2098 into subclasses of the finalized class. Now user calls to
2099 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2100 system return before any subclasses are finalized.
2101 * minor incompatible change: The reader no longer ignores errors
2102 regarding non-existent packages in #+ and #- feature tests.
2103 * new feature: command line options --no-sysinit, --no-userinit to
2104 inhibit loading the corresponding init files
2105 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2106 for sending data through UDP sockets (thanks to François-René Rideau)
2107 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2108 error is signalled instead (thanks to François-René Rideau)
2109 * minor incompatible change: Error signalling behaviour of lexical
2110 operations violating package locks has changed slightly. Refer to
2111 documentation on package locks for details.
2112 * enhancement: EVAL can process IF-expressions without resorting to the
2114 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2115 constant-folded properly due to missing out-of-line functions.
2116 (reported by Mika Pihlajamäki)
2117 * bug fix: LISTEN sometimes returned T even in cases where no data was
2118 immediately available from the stream
2119 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2120 were reversed. (reported by Levente Mészáros)
2121 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2122 when given a vector displaced to an adjustable array. (reported
2124 * bug fix: derivation of float boundaries from numbers outside the
2125 appropriate float range (reported by John Wiseman)
2126 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2128 * bug fix: precomputing cache entries for generic functions with
2129 some subclasses of specializers as yet invalid does not attempt to
2130 fill a cache line with a negative offset. (reported by Levente
2132 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2133 allow condition class objects as arguments to DOCUMENTATION and
2134 (SETF DOCUMENTATION); only find and set documentation for
2135 structure names for the STRUCTURE doc-type. (suggested by Gary
2137 * improvements to the Win32/x86 port:
2138 ** (user-homedir-pathname) and default initialization file
2139 locations now know about the user's "Documents and Settings"
2140 directory (thanks to Yaroslav Kavenchuk)
2141 ** run-program is implemented (thanks to Mike Thomas)
2142 ** sockets support (thanks to Timothy Ritchey)
2143 ** better backtrace support (thanks to Alastair Bridgewater)
2144 ** sb-grovel supported
2145 ** asdf-install and sb-posix work somewhat
2146 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2147 * improvements to the Solaris/x86 port:
2148 ** works on Solaris 11/Solaris Express
2149 ** floating-point exception handling support
2150 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2151 * fixed some bugs revealed by Paul Dietz' test suite:
2152 ** REMOVE-METHOD returns its generic function argument even when
2153 the method is not one of the generic functions' methods.
2154 ** objects declared as MEMBER types can be admissible arguments to
2155 structure accessors.
2156 ** printing characters should simply be printed by the FORMAT ~:C
2158 ** compiler failure when compiling functions with hairy constant
2159 defaults for optional parameters.
2160 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2161 function, which is already optimized.
2163 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2164 * new platform: experimental support for SBCL x86/Darwin, including
2165 MacOS X 10.4.5 on Intel.
2166 * new feature: Unicode character names are now known to the system
2167 (through CHAR-NAME and NAME-CHAR).
2168 * new feature: the filesystem location of SBCL's core file is
2169 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2170 * minor incompatible change: the contrib modules SB-POSIX and
2171 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2172 this change is to make it easier to distribute
2173 location-independent binaries.
2174 * bug fix: as implied by AMOP, standardized classes no longer have
2175 slots named by external symbols of public packages. (reported by
2177 * optimization: calling functions via constant symbols -- as in
2178 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2179 via the function object as in (FUNCALL #'FOO).
2180 * optimization: on x86 and x86-64, the calling convention for the
2181 case of dealing with an unknown number of values has been altered
2182 to be friendlier to the prediction heuristics implemented,
2183 particularly with reference to CALL and RET pairing. (thanks to
2184 Alastair Bridgewater)
2185 * optimization: on x86, the code for access to thread-local symbol
2186 values and binding/unbinding of thread-local symbols is smaller.
2187 (thanks to Alastair Bridgewater)
2188 * enhancement: CONSTANTP is now able to determine constantness of
2189 more complex forms, including calls to constant-foldable standardized
2190 functions and some special forms beyond QUOTE.
2191 * fixed bug: occasional GC crashes on Solaris/x86
2192 * optimization: x86-64 supports stack allocation of results of simple
2193 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2194 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2195 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2196 (thanks to James Knight)
2197 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2198 by the standard (thanks to Stephen Compall)
2200 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2201 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2202 be used for bundling the runtime and the core file into one
2203 executable binary. This feature is not currently supported on all SBCL
2204 platforms. (thanks to James Bielman and NIIMI Satoshi)
2205 * new feature: a generational or ephemeral garbage collector is now
2206 the default on the PowerPC platform (both Linux and Darwin). The
2207 old Cheney (stop and copy) collector is a build-time option.
2208 (thanks to Cyrus Harmon, after Raymond Toy)
2209 * minor incompatible change: the method by which SBCL finds its
2210 contributed modules has changed; it no longer relies on symbolic
2211 links from an $SBCL_HOME/systems directory, but searches directly
2212 in the subdirectories of $SBCL_HOME.
2213 * enhancement: the dynamic heap size on the Linux/PPC platform is
2214 markedly larger, even using the older Cheney garbage collector.
2215 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2216 certain complicated string types. (reported by Gary King)
2217 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2218 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2219 * fixed bug: DOCUMENTATION on structures no longer signals an
2220 error if no structure type of the right name exists. (reported by
2222 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2223 applicable non-standard primary or :AROUND method on
2224 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2225 no longer cause unbound variable errors. (reported by Kevin Reid)
2226 * fixed bug: metacircle resolution in cases where methods have slots
2227 added before the slots from STANDARD-METHOD. (reported by Jean
2229 * fixed bug: the Power PC assembly code for calling into lisp
2230 sometimes computed its return address wrongly (depending on the
2231 15th bit of the address, fixed at link time). This used to
2232 manifest itself in a segmentation violation while building PCL.
2233 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2234 many others over the years)
2235 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2236 the stack pointer (treated as a signed integer) is negative.
2237 (thanks to Peter van Eynde)
2239 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2240 * new platform: experimental support for the Windows operating
2241 system has been added. (thanks to Alastair Bridgewater)
2242 * fixed several bugs in and robustified the PPC FFI (including
2243 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2244 * bug fix: allow non-simple string symbol names (reported by Paul
2246 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2248 * bug fix: saving a core corrupted callbacks on x86/x86-64
2249 * bug fix: closed a loophole in metacircularity detection and
2250 grounding in the PCL implementation of CLOS.
2251 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2252 (reported by tomppa on #lisp)
2253 * bug fix: clear the direction flag on Lisp -> C transitions, as
2254 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2255 (reported by Andrej Grozin and Hendrik Maryns)
2256 * optimization: major improvements to GC efficiency on GENCGC platforms
2257 * optimization: faster implementation of EQUAL
2258 * optimization: emit more efficient opcodes for some common
2259 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2260 * optimization: several other minor code-generation improvements on x86-64
2261 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2263 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2264 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2265 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2266 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2267 by ANSI as a generic function, and for consistency (SETF
2268 GENERIC-FUNCTION-NAME) is treated likewise.
2269 * fixed bug #233.b: make constraint propagation notice when a variable
2270 value is changed after it is referenced but before it is used
2271 * fixed bug #296: no more arbitrary behaviour from filenames with
2272 odd characters as --load arguments. (reported by Adam Warner)
2273 * fixed bug #390: :CHARACTER-SET pathname components now work as
2274 expected. (reported by Tim Daly Jr)
2275 * fixed bug #391: complicated :TYPE intersections in slot
2276 definitions no longer cause an error in PCL internals.
2277 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2278 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2279 returning the number of octets which would be written to the
2280 file-stream. (thanks to Robert J. Macomber)
2281 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2282 arguments to the internal stream functions. (thanks to David
2284 * bug fix: stack exhaustion is now handled on the x86/SunOS
2285 platform. (thanks to Daisuke Homma)
2286 * bug fix: more accurate ROOM results on GENCGC platforms
2287 * optimization: improved type inference for arithmetic-for
2288 index variables in LOOP
2289 * optimization: faster floating-point SQRT on x86-64
2290 * fixed some bugs revealed by Paul Dietz' test suite:
2291 ** DOCUMENTATION returns NIL instead of "" for method combinations
2292 that don't have a docstring
2294 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2295 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2296 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2297 therefore are not customizeable by user code (as seems to be at
2298 least permitted and maybe required by AMOP). As a consolation,
2299 however, the SBCL implementation of these functions now calls
2300 REINITIALIZE-INSTANCE as specified by AMOP.
2301 * bug fix: slot-definition documentation is propagated as per ANSI
2302 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2303 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2304 argument, as do eslotd initialization methods. (from Pascal
2305 Costanza's "Closer" project)
2306 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2307 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2309 * bug fix: it is now possible to have more than one subclass of
2310 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2311 (reported by Bruno Haible, Pascal Costanza and others)
2312 * bug fix: the dependent update protocol now works for generic
2313 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2314 and Pascal Costanza)
2315 * bug fix: condition-class instances corresponding to
2316 DEFINE-CONDITION forms are now created eagerly. (reported by
2317 Kalle Olavi Niemitalo on comp.lang.lisp)
2318 * bug fix: floating point printing is more accurate in some
2319 circumstances. (thanks to Simon Alexander)
2320 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2321 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2322 * bug fix: callbacks on OS X now preserve stack-alignment.
2323 (thanks to Cyrus Harmon)
2324 * enhancement: the x86-64 disassembler is much better at
2325 disassembling SSE instructions. (thanks to Lutz Euler)
2326 * enhancement: CHECK-TYPE on a variable now allows type-inference
2327 (thanks to Vincent Arkesteijn)
2328 * optimization: improved performance of EUC-JP external format.
2329 (thanks to NIIMI Satoshi)
2330 * optimization: performance improvements to IO on file streams of
2331 :ELEMENT-TYPE CHARACTER
2332 * optimization: much faster memory allocation on x86-64
2333 * optimization: faster garbage collections (latency and throughput)
2335 * optimization: faster bignum subtraction and division on x86 and x86-64
2336 (thanks to Lutz Euler)
2337 * optimization: more accurate type-inference for loops that use a
2338 floating point index variable or a negative step.
2340 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2341 * bug fix: add a workaround to SBCL looping infinitely at startup on
2342 Linux kernels with apparently buggy implementations of personality().
2343 (thanks to Svein Ove Aas)
2344 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2345 (thanks to David Lichteblau)
2346 * bug fix: local bindings shadow global symbol macros for
2347 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2348 * optimization: non-open coded uses of numeric comparison operators
2349 (e.g. >) no longer cons when called with more than one parameter
2350 on platforms supporting dynamic-extent allocation.
2351 * enhancement: saving cores with foreign code loaded is now supported
2352 on MIPS/Linux in addition to the previously supported platforms.
2353 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2354 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2355 * bug fix: division by zero in sb-sprof when no samples were collected
2356 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2357 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2358 (thanks to Alexander Kjeldaas)
2359 * new feature: ignoring the return values of destructive functions
2360 like NREVERSE signals a compile-time style-warning.
2361 (thanks to Kevin Reid)
2362 * new feature: the alignment of alien structure fields can be
2363 explicitly specified. (thanks to Cyrus Harmon)
2364 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2365 and dump core on SIGQUIT
2367 ** incompatible change: threads do not inherit values of specials
2368 from their parents (see manual)
2369 ** bug fix: threads stacks belonging to dead threads are freed by the
2370 next exiting thread, no need to gc to collect thread stacks anymore
2371 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2372 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2373 ** bug fix: dynamic variable and thread start related gc lossage
2374 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2376 * fixed some bugs revealed by Paul Dietz' test suite:
2377 ** SUBTYPEP is slightly more accurate on heinously complicated
2378 CONS types where some of the members have uncertain (in the
2379 NIL, NIL sense) type relationships to each other.
2381 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2382 no longer purified unless :PURIFY T is explicitly specified.
2383 ** Non-purified cores are significantly smaller than before
2385 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2386 * new feature: timers based on Zach Beane's excellent timer package
2387 * added support for the following external formats: koi8-u,
2388 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2389 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2390 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2391 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2392 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2393 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2394 * incompatible change: a threaded SBCL will no longer revert to
2395 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2396 * bug fix: interrupts are disabled until startup is complete; no
2397 more sigsegvs when receiving a signal to soon
2398 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2400 * bug fix: add a workaround for the memory randomization features in
2401 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2402 workaround will only be in effect on systems with the proc filesystem
2404 * bug fix: printing objects of type HASH-TABLE signals a
2405 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2407 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2408 have been running for over 50 days. (reported by Gilbert Baumann)
2409 * bug fix: the logic for getting names of functions gets less
2410 confused when confronded with alternate-metaclass
2411 funcallable-instances. (reported by Cyrus Harmon)
2412 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2413 consistent, even on internal alternate-metaclass objects.
2414 * bug fix: flush closure information collected by physical
2415 environment analysis prepass before the main pass. (bug reported
2417 * bug fix: compiler pack phase does not modify a hashtable, which is
2418 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2419 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2420 may be expanded. (reported by Alexander <malishev> on c.l.l)
2421 * bug fix: no more style-warnings when compiling code using LAST
2422 under high-SPEED low-SPACE settings. (reported by David Wallin
2424 * fixed some incompatibilities between SBCL's MOP and the MOP
2426 ** the METAOBJECT class is now implemented;
2427 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2428 STANDARD-OBJECT, as required;
2429 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2430 now compatible (as required by VALIDATE-SUPERCLASS); there
2431 remains a consistency requirement over the presence or absence
2432 of the FUNCTION class in the superclass list of finalized
2433 classes; see the manual for more details;
2434 ** the :AROUND method for COMPUTE-SLOTS on
2435 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2436 requested slot ordering.
2438 ** bug fix: parent thread now can be gc'ed even with a live
2440 ** bug fix: binding a special with PROGV to no value is not
2441 the same as that symbol not having been bound (thanks to
2443 ** bug fix: binding specials is thread safe (thanks to
2445 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2446 and SB-SPROF do not die with 'no handler for signal XX in
2447 interrupt_handle_now(..)' anymore
2448 ** bug fix: WITH-TIMEOUT works with multiple running threads
2449 * fixed some bugs revealed by Paul Dietz' test suite:
2450 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2451 the :method-class keyword argument.
2453 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2454 * new port: the Solaris operating system on x86 processors is now
2455 mostly supported, though some rough edges in the environment
2456 remain. (thanks to Daisuke Homma)
2457 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2458 space for its heap. (thanks to Thiemo Seufer)
2459 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2460 closures. (thanks to Thiemo Seufer)
2461 * minor incompatible change: eof selects abort in the debugger.
2462 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2463 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2465 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2466 deprecated, and will go away in a future revision of SBCL.
2467 * minor incompatible change: GC-ON and GC-OFF are no longer
2468 implemented with a counter, it does not matter how many times gc
2469 is switched on or off
2470 * bug fix: discriminating functions for generic function classes
2471 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2472 make invalid assumptions about method precedence order. (reported
2474 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2475 platforms. (thanks to Thiemo Seufer)
2476 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2477 * bug fix: correct pathname printing with printer escaping is on.
2478 (thanks to Kevin Reid)
2479 * bug fix: complex VOP definitions in "user-space" no longer trigger
2480 package locks. (reported by Zach Beane)
2481 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2482 for funcallable-instance functions, and is no different from
2484 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2485 characters in the current readtable. (reported by Nicholas Neuss)
2486 * bug fix: SUBTYPEP on various CONS types returns more a more
2487 accurate acknowledgment of its certainty.
2488 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2489 lists in some cases. This partially fixes bug 384.
2490 * flush all standard streams before prompting in the REPL and the
2492 * bug fix: signal handling and triggering gc do not conflict
2493 directly anymore, in particular a high frequency sb-sprof does
2494 not prevent gc from running
2495 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2496 approximation for timezone and DST information between the
2497 universal time epoch and the smallest negative 32-bit time_t.
2498 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2499 year 1899 so long as the encoded time is non-negative.
2500 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2501 the correct answer for non-constant rotate amounts when performing
2502 an inline 32-bit rotation.
2504 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2505 there is only one thread in the session
2506 ** bug fix: memory leak for streams created in one thread and
2507 written to in another
2508 ** bug fix: lockup when compiled with gcc4
2509 ** bug fix: race that allows the gc to be triggered when gc is
2511 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2512 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2514 ** bug fix: finished threads are gc'ed properly
2515 * fixed some bugs revealed by Paul Dietz' test suite:
2516 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2517 has arguments with a different set of applicable methods from
2518 the orignal arguments.
2519 ** The type error thrown by MAP now has a correct expected-type
2521 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2522 name a compiled function.
2523 ** Three MISC tests where a large bignum was improperly coerced to
2524 a float that couldn't represent that bignum during type
2525 derivation were fixed.
2526 ** SUBTYPEP can now handle types involving the negation of a
2527 list-form FUNCTION type.
2528 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2529 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2530 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2532 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2533 * New feature: Experimental support for bivalent streams: streams
2534 opened with :element-type :default now allow character and binary
2535 (unsigned-byte 8) I/O
2536 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2537 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2539 * bug fix: no more highly sporadic "couldn't check whether ~S is
2540 readable" when reading a stream and an interrupt hits in the middle
2541 of a select system call
2542 * compiler better recognizes complex arrays (reported by Eduardo
2544 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2545 for variables on SBCL built with linkage-tables. (reported by Luis
2547 * various error reporting improvements.
2548 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2549 (Thanks to Thiemo Seufer)
2550 * bug fix: nested reader invokations work correctly
2551 * bug fix: it is possible to have simultaneous references to foreign
2552 code and foreign data with the same name.
2554 ** added x86-64 support
2555 ** incompatible change: the threading api now works with thread
2556 objects instead of thread ids
2557 ** bug fix: threads are protected from signals and interruption when
2558 starting up or going down
2559 ** bug fix: a race where an exiting thread could lose its stack to gc
2560 ** bug fix: don't halt on infinite error in threads if possible
2561 ** fixed numerous gc deadlocks introduced in the pthread merge
2562 ** bug fix: fixed thread safety issues in read and print
2563 ** bug fix: debugger doesn't hang on session lock if interrupted at
2564 an inappropriate moment
2565 ** bug fix: run-program is now thread safe(r)
2566 ** bug fix: inner with-recursive-lock no longer releases the mutex
2567 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2568 * fixed some bugs revealed by Paul Dietz' test suite:
2569 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2570 EXPECTED-TYPE slots filled.
2571 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2573 ** MAKE-CONDITION accepts classes as type-designators.
2574 ** COMPILE may never return NIL.
2575 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2576 range before calling Unix time functions
2578 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2579 * numerous signal handling fixes to increase stability
2580 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2581 * minor incompatible change: we now correctly canonize default
2582 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2583 as per the MOP, rather than the historical (INITARG INITFUNCTION
2584 INITFORM). (reported by Bruno Haible)
2585 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2586 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2587 for more information.
2588 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2589 pathname is a directory pathname.
2590 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2591 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2593 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2594 :METACLASS argument in addition to a class name. (reported by
2595 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2596 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2597 (reported by Bruno Haible; patch from Gerd Moellmann)
2598 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2600 * bug fix: more cleanups to the floating point exception handling on
2601 x86-64 (thanks to James Knight)
2602 * bug fix: the compiler does not try to constant fold calls of
2603 COERCE and BIT-* functions when they return freshly constructed
2604 objects. (reported by Nikodemus Siivola and Paul Dietz)
2605 * optimization: improved the MIPS versions of generic (in the
2606 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2607 * optimization: direct conversion of (unsigned-byte 32) to floats on
2608 the PowerPC platform.
2609 * optimization: structure instances with raw slots now use less
2610 memory, and probably show better memory locality. (thanks to
2612 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2613 are treated as requests for stack allocation on the x86-64,
2614 Alpha-32, PPC and SPARC platforms.
2615 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2616 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2617 (thanks to Tony Martinez)
2619 ** gcing a dead thread can no longer lead to lockups
2620 ** threads block signals until they are set up properly
2621 ** errno is no longer shared by threads
2622 ** interrupt-thread restores the eflags register on x86
2623 ** fixed some lockups due to gc/thread interaction
2624 * fixed some bugs revealed by Paul Dietz' test suite:
2625 ** invalid dotted lists no longer raise a read error when
2626 *READ-SUPPRESS* is T
2627 ** signal an error if a symbol that names a declaration is used
2628 as the name of a type, or vice versa
2629 ** allow using the (declare (typespec var*)) abbreviation for
2630 (declare (type typespec var*)) with all type specifiers
2631 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2632 ** always return NIL from PPRINT-POP when OBJECT is NIL
2633 ** don't signal errors when pretty-printing malformed LABELS,
2634 FLET or MACROLET forms
2635 ** declarations in a DOLIST body are also in scope for the
2637 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2639 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2642 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2643 * fixed cross-compiler leakages that prevented building a 32-bit
2644 target with a 64-bit host compiler.
2645 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2646 opened with :IF-EXISTS :OVERWRITE.
2647 * fixed bug 281: error for an invalid qualifier in a short-form method
2648 combination method is not signalled until the faulty method is called.
2649 * bug fix: iteration variable type inferrer failed to deal with open
2650 intervals. (reported by Alan Shields)
2651 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2652 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2653 or more runtime options were provided to the sbcl binary.
2654 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2655 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2656 * optimization: there's now a fast-path for fixnum arguments in the
2657 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2658 * optimization: the code generated on x86-64 is more compact thanks
2659 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2660 * bug fix: floating-point exception handling now partly works on
2661 x86-64. (Thanks to James Knight)
2662 * improvement to the MIPS backend from Thiemo Seufer: C-style
2663 64-bit long long arguments and return values to alien functions
2665 * fixed some bugs revealed by Paul Dietz' test suite:
2666 ** the type-error signalled from WARN has a filled-in DATUM slot.
2667 ** the type-error required when a stream is not associated with
2668 a file has the stream as its datum.
2669 ** type-errors on single-floats on x86-64 no longer have
2670 :INVALID-OBJECT as the datum
2671 ** the type-errors signalled for invalid function names now have
2672 a correct expected type
2673 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2674 for structures defined with a :TYPE. Documentation strings for
2675 typed structures are no longer immediately discarded
2676 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2677 broadcast streams and synonym streams. FILE-LENGTH now also works
2678 on broadcast streams.
2680 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2681 * incompatible change: the --noprogrammer option, deprecated since
2682 version 0.7.5, has been removed. Please use the equivalent
2683 --disable-debugger option instead.
2684 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2686 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2687 inoperational for a while now) has been completely removed.
2688 * null lexical environments are now printed as #<NULL-LEXENV>,
2689 significantly reducing the amount of clutter in typical backtraces.
2690 * documentation on weak pointers, finalization, and after GC hooks
2691 has been added to the manual.
2692 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2693 as other specialized array types, is much faster. SUBSEQ and
2694 COPY-SEQ on such arrays have also been sped up.
2695 * optimization: EQL is now more efficient when at least other argument
2696 is known to be of type (OR FIXNUM (NOT NUMBER)).
2697 * fixed bug: the runtime is now less vulnerable to changes in the
2698 size of the SBCL object on OS X, and virtual memory is reserved for
2699 all spaces that need to be at a fixed address.
2700 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2701 * fixed bug: finalizers and after GC hooks that cause consing are now
2703 * fixed bug: compiler error messages and summaries are now printed to
2704 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2705 * fixed inference of the upper bound of an iteration variable.
2706 (reported by Rajat Datta).
2707 * fixed bug 211e: calling local functions with duplicated constant
2708 keyword argument no longer causes a bogus style warning about an
2710 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2711 ftype declaration to be disregarded. (reported by Dave Roberts)
2712 * fixed bug 373: caused by erronous compilation of references to alien
2713 variables in the runtime on ppc/darwin.
2714 * fixed bug 376: CONJUGATE type deriver.
2715 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2716 (reported by Baughn on #lisp)
2717 * a cross-compiler bug on non-x86 platforms has been identified and
2718 fixed. (thanks to Bruno Haible)
2719 * improvements to the MIPS runtime code for increased stability.
2720 (thanks to Thiemo Seufer)
2721 * increased the maximimum compact environment size to allow
2722 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2723 * partial workaround for bug 135: don't name the function we're
2724 calling for hairy cases of EVAL, so as not to accumulate one environment
2725 entry per call to EVAL. (reported by Kevin Reid)
2726 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2727 * optimization: type testing for non-vector arrays should be faster.
2728 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2730 * bug fix: setting 31st element of a bit vector to zero did not work
2732 * bug fix: redefining a class definition which failed due to a
2733 previous accessor / function clash now works (but see BUGS entry
2734 #380 for more problems in this area). (thanks to Zach Beane)
2735 * the long form of DEFINE-METHOD-COMBINATION disables method group
2736 checking when given a single method group with pattern *. (thanks
2738 * on x86 compiler supports stack allocation of results of simple
2739 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2740 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2741 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2742 * fixed some bugs related to Unicode integration:
2743 ** the restarts for recovering from input and output encoding
2744 errors only appear when there is in fact such an error to
2746 * fixed some bugs revealed by Paul Dietz' test suite:
2747 ** MISC.549 and similar: late transformation of unsafe type
2748 assertions into derived types caused unexpected code
2750 ** SCALE-FLOAT type deriver is less wrong.
2751 ** type derivers for EXP, LOG and similar functions compute result
2752 types for complex arguments better.
2753 ** (MISC.563) CONJUGATE type deriver works for very restricted
2755 ** out-of-line type testers for character strings are available.
2756 ** EQUAL compiler transform understands specialness of objects
2758 ** accessing double-floats stored on the stack now works on x86-64.
2759 ** debugger internals could sometimes create invalid lispobjs,
2760 resulting in GC crashes.
2761 ** MISC.548: type check weakening can convert required type into
2763 ** initialization forms for bindings are not in scope of free special
2766 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2767 * incompatible change: thread support for non-NPTL systems has
2768 been removed - locking is buggy and unreliable. A threaded
2769 SBCL build will now warn at startup and refuse to create
2770 new threads, unless futex support is detected in the kernel
2771 * incompatible change: the top level REPL now has only an ABORT
2772 restart associated with it, not TOPLEVEL and ABORT as it used to.
2773 TOP and TOPLEVEL are now available as debugger commands for
2774 returning to the top level.
2775 * incompatible change: forms evaluated in the REPL now use the
2776 global optimization policy.
2777 * incompatible change: user- and system-initialization files are
2778 no longer processed with LOAD, but by READ and EVAL; hence the
2779 global optimization policy, startup package, readtable, etc,
2781 * The .fasl file format number has been incremented because of
2782 various incompatible changes.
2783 * internal entry point details and argument counts no longer appear
2784 in backtraces unless explicitly requested by setting
2785 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2786 * built-in and standard functions no longer have names like "top
2787 level local call to FOO".
2788 * fixed bug 32: functions defined in non-null lexical environments
2789 now have more legible printed representation
2790 * fixed bug 33: functions defined in non-null lexical environemnts
2791 are now more amenable to inspection by INSPECT.
2792 * workaround for bug 354: XEPs no longer appear in backtraces unless
2793 explicitly requested.
2794 * fixed bug: receiving the signal which results from attempting to
2795 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2796 SIGBUS on other *BSDs) on architectures where the C stack is also
2797 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2798 to debugger confusion or wild instability. (reported by Cheuksan
2800 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2801 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2802 (reported by Lutz Euler)
2803 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2804 compiled code. (reported by Paul Dietz)
2805 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2806 specialized parameter to a method to something that is not TYPEP
2807 the specializer is now possible.
2808 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2809 face of package deletion.
2810 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2811 pathname. (reported by David Tolpin on c.l.l)
2812 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2813 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2814 STRING-STREAM and FILE-STREAM, respectively.
2815 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2816 than previously; in addition, its test suite is now run on build.
2817 (thanks to Luke Gorrie)
2818 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2819 * optimization: added a immediate representation for single-floats
2821 * fixed some bugs revealed by Paul Dietz' test suite:
2822 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2823 ** attempting to create a package with a colliding nickname causes
2824 correctable errors to be signalled.
2825 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2826 ** several x86-64 backend bugs related to sign-extension of immediate
2829 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2830 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2831 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2833 * fixed loading of multiply forward-referenced layouts.
2834 (thanks to Cheuksan Wang)
2835 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2836 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2837 (see COMPILE-FILE documentation for details of :PRINT option)
2838 * fixed bugs 19 and 317: fixed-format floating point printing is
2839 more accurate. This also fixes a bug reported by Adam Warner
2840 related to the ~@F format directive.
2841 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2843 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2844 dispatch table if the from-char is a dispatch macro character.
2845 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2846 by the wordsize no longer ignore the last word. (reported by Lutz
2848 * fixed bug in type checking of dynamic-extent variables. (reported
2850 * optimization: sequence traversal functions use their freedom to
2851 coerce function designators to functions.
2852 * optimization: code with many calls to CLOS methods specialized on
2853 CLOS classes has had redundant type checks removed.
2854 * optimization: added declarations to speed up operations that access
2855 the internal character database (for example STRING-UPCASE)
2856 * optimization: comparison operations between floats and sufficiently small
2857 fixnums no longer create extra rationals
2858 * fixed some bugs related to Unicode integration:
2859 ** portions of multibyte characters at the end of buffers for
2860 character-based file input are correctly transferred to the
2861 start of the buffer at the next read.
2862 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2863 passing it through to OPEN.
2864 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2865 argument given to internal calls to OPEN.
2866 ** the built-in comment readers (introduced by character sequences
2867 ";" and "#|") are more forgiving to encoding errors; they will
2868 STYLE-WARN and then attempt to resync the stream at a character
2869 boundary. (thanks to Teemu Kalvas)
2870 * fixed some bugs in the x86-64 port:
2871 ** Negative short int return values from c-calls are sign-extended
2873 ** The stack is aligned to 16-bytes for c-calls, as required by
2874 the ABI. (thanks to Cheuksan Wang)
2875 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2876 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2877 for enums. (thanks to Vincent Arkesteijn)
2878 ** Multiple small optimizations and bugfixes for floating point
2880 * fixed some bugs revealed by Paul Dietz' test suite:
2881 ** Space, Tab, Linefeed, Return and Page have the invalid
2882 secondary constituent character trait.
2883 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2885 ** WITH-INPUT-FROM-STRING should only update the index place on
2887 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2888 works more reliably.
2889 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2890 with one-dimensional arrays with fill pointers.
2891 ** TYPE-OF failed on a complex with an integer realpart and a
2893 ** compiler failure during type inference for the code of form
2894 (IF (EQL X (THE ...)) ...) (MISC.535).
2896 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2897 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2898 platform. The port supports 61-bit fixnums, large memory spaces
2899 and reloading shared object files.
2900 * enhancement: saving cores with foreign code loaded is now
2901 supported on ppc/Darwin in addition to the previously supported
2903 * enhancement: the statistical profiler now walks deeper into the
2904 call stack for more meaningful call-graphs and accrued time
2905 reports (x86/x86-64 only). It also now reports time spent in
2907 * enhancement: it is now possible to trace most individual methods
2908 of a generic function in addition to tracing the generic function
2910 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2912 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2913 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2914 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2915 produces an error. (thanks to Vincent Arkesteijn)
2916 * bug fix: NAMESTRING on pathnames with :WILD components in their
2917 directories works correctly. (thanks to Artem V. Andreev)
2918 * fixed bug 125: compiler preserves identity of closures. (reported
2920 * bug fixed: functions with &REST arguments sometimes failed with
2921 "Undefined function" when compiled with (DEBUG 3). (reported by
2923 * bug fix: overflow during compiling of setting element of a bit
2924 vector with constant index and value. (reported by Timmy Douglas)
2925 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2926 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2927 * on x86 compiler partially supports stack allocation of dynamic-extent
2929 * GO and RETURN-FROM do not check the extent of their exit points
2930 when compiled with SAFETY 0.
2931 * fixed some bugs related to Unicode integration:
2932 ** encoding and decoding errors are now much more robustly
2933 handled; it should now be possible to recover even from invalid
2934 input or output to the terminal. (thanks to Teemu Kalvas)
2935 ** provided a first cut at implementing STRING-TO-OCTETS and
2936 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2937 ** altered the SB-MD5 contributed module slightly, changing the
2938 interface just enough for it to be supportable for builds where
2939 lisp characters are not eight bits.
2940 * fixed some bugs revealed by Paul Dietz' test suite:
2941 ** the FORMATTER-generated functions for ~V[ conditionals require
2942 the correct number of arguments.
2943 ** READ-FROM-STRING returns the mandated second value when applied
2944 to displaced strings.
2945 ** the #\Rubout and #\Backspace characters are treated as invalid
2946 constituent characters by the tokenizer.
2948 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2949 * new feature: reloading changed shared object files with
2950 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2951 * new feature: references to foreign variables and functions
2952 can now be compiled and loaded before the corresponding shared
2953 object file is loaded, as long as the foreign definitions are
2954 available at runtime.
2955 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2956 supported. (thanks to Dan Debertin)
2957 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2958 just keywords. (thanks to Vincent Arkesteijn)
2959 * fixed bug #331: structure-class instances corresponding to
2960 DEFSTRUCT forms are now created eagerly.
2961 * fixed bug #345: backtraces from calls to undefined functions work
2962 on x86 as well. Related bug #61 is now also partially fixed on x86
2963 (backtraces from throws to unknown catch tags.)
2964 * bug fix: lambda-list parsing is now stricter vrt. order and number
2965 of lambda-list keywords.
2966 * bug fix: as specified by AMOP, an error is signalled if a
2967 class-option appears multiple times in a DEFCLASS form. (reported
2969 * bug fix: RANDOM can be compiled when the compiler derives the type
2970 of its numeric argument as a disjoint set of small integers.
2971 (reported by Paul Dietz)
2972 * bug fix: starting a core saved with shared objects loaded when
2973 those objects are not available no longer causes threaded SBCL to
2974 hang. (reported by Sean Ross)
2975 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2977 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2978 argument, which must always be NIL. (reported by Kalle Niemitalo)
2979 * bug fix: printing 1.0d+23 no longer results in an error.
2980 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2981 * bug fix: structure slot setters preserve evaluation order. (thanks
2983 * fixed some bugs related to Unicode integration:
2984 ** RUN-PROGRAM can allow its child to take input from a Lisp
2985 stream. (reported by Stefan Scholl)
2986 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2987 locales. (reported by Ken Causey)
2988 * fixed some bugs revealed by Paul Dietz' test suite:
2989 ** INCF, DECF and REMF evaluate their place form as specified in
2991 ** FORMATTER expands ~{ ~} iteration directives with V or #
2992 parameters correctly.
2993 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2994 consequent uses no arguments correctly.
2995 ** the system has a partial understanding of the (COMPLEX RATIO)
2997 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3000 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3001 * new feature: a build-time option (controlled by the :SB-UNICODE
3002 keyword feature, enabled by default) for building the system with
3003 support for the entire 21-bit character space defined by the
3005 * new feature: the system now has rudimentary external-format
3006 support; the primary user-visible change at this time is that
3007 characters with the high bit set (such as lower-case-e-acute) will
3008 print correctly to a terminal in a UTF-8 environment.
3009 * minor incompatible change: BASE-CHAR no longer names a class;
3010 however, CHARACTER continues to do so, as required by ANSI.
3011 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3012 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3013 has been moved to the SB-EXT package (temporarily re-exported from
3015 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3016 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3018 * fixed bug #351: better error-handlind and reporting for malformed
3020 * fixed bug #350: bignum-printing is now more memory-efficient,
3021 allowing printing of very large bignums, eg. (expt 2 10000000).
3022 (reported by Bruno Haible)
3023 * fixed bug #302: better primitive-type selection for intersection
3025 * fixed bug #308: non-graphic characters now all have names, as
3026 required. (reported by Bruno Haible)
3027 * bug fix: redefining a class with different superclasses now correctly
3028 removes it from the direct-subclasses of its previous superclasses.
3029 (reported by David Morse)
3030 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3031 new value now works. (reported by Bruno Haible)
3032 * bug fix: correct canonicalization of multiple non-standard slot
3033 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3034 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3035 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3036 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3037 now exists, an signals an error.
3038 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3039 during macroexpansion for non-iteration variables as well. (reported
3040 by Bruno Haible for CMUCL)
3041 * bug fix: Cyclic structures and unprintable objects in compiler
3042 messages no longer cause errors. (reported by Bruno Haible)
3043 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3044 and READ-FROM-STRING all now return a primary value of NIL if
3045 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3046 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3047 (reported by Bruno Haible for CMUCL)
3048 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3049 do not designate a condition. (reported by Bruno Haible for
3051 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3052 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3053 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3054 permitting resolution in favour of any of the conflicting symbols.
3055 (reported by Bruno Haible for CMUCL)
3056 * bug fix: EQUAL compiler optimizations is less aggressive on
3057 strings which can potentially compare true despite having distinct
3058 specialized array element types.
3059 * bug fix: unit enumerations can be defined without dividing by
3060 zero. (thanks to Vincent Arkesteijn)
3061 * FORMAT compile-time argument count checking has been enhanced.
3062 (report from Bruno Haible for CMUCL)
3063 * a partial workaround for the bug 262: the compiler does not try to
3064 inline-expand a local function doing RETURN-FROM from a deleted
3065 BLOCK. (thanks to Peter Denno for the bug report and to David
3066 Wragg for the simple test case)
3067 * fixed some bugs revealed by Paul Dietz' test suite:
3068 ** RENAME-PACKAGE allows all package designators as new package
3070 ** constraint propagation and lambda variable substitution are
3071 more cautious in dealing with partially deleted code.
3072 ** compiler sometimes lost reoptimization passes.
3073 ** CERROR, given a condition as condition designator, passes its
3074 remaining arguments to the continue format control without
3076 ** Case-altering FORMAT directives work correctly on non-ASCII
3078 ** The REAL type specifier handles bounds outside the floating
3079 point ranges without signalling FLOATING-POINT-OVERFLOW.
3080 ** Functions with IR1-transformations can create intercomponent
3081 references to global functions.
3082 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3084 ** FORMAT ~R treats a nil value for its first parameter correctly.
3086 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3087 * enhancement: saving cores with foreign code loaded is now
3088 supported on x86/NetBSD and sparc/Linux in addition to the previously
3089 supported platforms.
3090 * bug fix: on some platforms repeated installations caused multiple
3091 copies of HTML documentation to be installed -- should not happen
3092 any more. (reported by Stefan Scholl)
3093 * bug fix: parsing self-recursive alien record types multiple times
3094 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3095 original patch by Helmut Eller for CMUCL)
3096 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3097 (thanks to Richard Kreuter)
3098 * bug fix: defining classes whose accessors are methods on existing
3099 generic functions in other (locked) packages no longer signals
3100 bogus package lock violations. (reported by François-René Rideau)
3101 * bug fix: special variables as DEFMETHOD parameters no longer have
3102 associated bogus type declarations. (reported by David Wragg and
3104 * bug fix: read-write consistency on streams of element-type
3105 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3106 * bug fix: redefiniton of the only method of a generic function with
3107 no DEFGENERIC no longer emits a full WARNING. In addition,
3108 redefinition of generic functions with no DEFGENERIC to an
3109 incompatible lambda list now signals an error. (thanks to Zach
3111 * bug fix: DEFGENERIC now works even when there's a function of the
3112 same name in an enclosing lexical environment. (thanks to Zach
3114 * fixed compiler failure, caused by instrumenting code during
3115 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3116 * optimization: added loop analysis and improved register allocation
3117 * fixed some bugs revealed by Paul Dietz' test suite:
3118 ** POSITION on displaced vectors with non-zero displacement
3119 returns the right answer.
3120 ** (SIMPLE-STRING) is a valid type specifier for sequence
3122 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3124 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3125 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3127 ** The justification version of the FORMAT ~< directive treats
3128 non-zero minpad parameter correctly.
3130 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3131 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3132 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3133 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3134 the supported interface.
3135 * new feature: Single-stepping of code compiled with DEBUG 2 or
3136 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3137 * new feature: saving cores with foreign code loaded is now
3138 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3139 Timothy Moore's work for CMUCL)
3140 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3141 parameters to * instead of NIL if no initform is supplied.
3142 (reported by Johan Bockgaard)
3143 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3144 correctly when FUNCALL appears as the car of the form. Note:
3145 despite this FUNCALL forms are not currently subject to
3146 compiler-macro expansion. (port of Raymond Toy's fix for the
3147 same from CMUCL, reported by Johan Bockgaard)
3148 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3149 (thanks for Teemu Kalvas)
3150 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3151 case instead of terminating the iteration (thanks for Julian
3152 Squires, Sean Champ and Raymond Toy)
3153 * bug fix: incorrect expansion of defgeneric that caused a style
3154 warning. (thanks for Zach Beane)
3155 * bug fix: slot accessor effective method computation works properly
3156 for classes with multiple non-standard applicable methods on
3157 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3158 * on x86 compiler supports stack allocation of results of LIST and
3159 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3160 CMUCL implementation by Gerd Moellmann)
3161 * fixed some bugs revealed by Paul Dietz' test suite:
3162 ** FORMAT strings with both the ~<~:;~> form of the justification
3163 directive and pretty-printing directives cause an error.
3165 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3166 * incompatible change: the internal functions
3167 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3168 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3169 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3170 instead of the old functions.
3171 * new feature: on platforms where "dladdr" is available foreign
3172 function names now appear in backtraces. (based on Helmut Eller's
3174 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3175 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3177 * documentation: ASDF manual is now distributed with SBCL.
3178 * bug fix: SBCL can now load its contributed modules with REQUIRE
3179 even if the system-provided entries have been removed from
3180 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3182 * bug fix: backtraces involving undefined functions or assembly
3183 routines are more informative. (thanks to Brian Downing)
3184 * bug fix: mutually referent alien structures now work correctly.
3185 (reported by Rick Taube)
3186 * bug fix: structures defined by WITH-ALIEN can be referred to
3187 within other definitions in the same WITH-ALIEN.
3188 * bug fix: division operators (MOD, TRUNCATE and the like) with
3189 constant zero divisors and integer dividends no longer generate
3191 * bug fix: provide default methods for INPUT-STREAM-P and
3192 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3193 * bug fix: improve the detection and resolution of MOP metacycles
3194 (where effective method computation depends on the generic function
3195 having its effective method computed). (reported by Bruno Haible)
3196 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3197 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3198 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3199 * bug fix: pathnames with relative directory components can be
3200 represented relative to default pathnames.
3201 * optimization: in taking the GCD of bignums, reduce the two bignums
3202 to approximately the same size (using Euclid's algorithm) before
3203 applying the more sophisticated binary GCD. (thanks to Juho
3205 * optimization: COUNT on bitvectors now operates word-at-a-time.
3206 * optimization: ASH with a positive, but not necessarily constant,
3207 (leftwards) shift, when in a modular context, is compiled to a
3209 * fixed some bugs revealed by Paul Dietz' test suite:
3210 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3211 if the corresponding argument is NIL.
3212 ** FORMAT directives accepting a minpad parameter treat negative
3214 ** literal commas as character parameters to FORMAT directives are
3216 ** literal spaces directly after ~<Newline> directives within a
3217 format-logical-block (~:< ~@:>) do not induce :FILL-style
3218 conditional newlines.
3219 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3220 as specified: it no longer includes conditional newlines).
3221 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3223 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3224 :PER-LINE-PREFIX argument does not evaluate to a string.
3226 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3227 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3228 the manual for details; for now, package locks can be disabled by
3229 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3230 if no major problems are found then it is likely that they will be
3231 compiled in unconditionally.
3232 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3233 unsupported operators on all platforms. To load a shared library
3234 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3235 object file, link it into a shared library outside of SBCL and
3236 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3238 * bug workaround: ROOM T and the GC were not working together
3239 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3240 reporting facility aren't preserved. That reporting has been
3241 disabled, so now until and unless someone figures out how to make it
3242 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3243 * minor incompatible change: as threatened around sbcl-0.8.0, the
3244 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3245 The symbols are also exported from SB-PCL for backwards
3246 compatibility, but more so than before SB-PCL should be treated as
3247 an implementation-internal package.
3248 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3250 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3251 It is known as of this release not to work on the Alpha, however.
3252 * fixed bug #167: errors signalled due to illegal syntax in method
3253 bodies are now more legible.
3254 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3255 designators and can hence be used with TYPEP.
3256 * fixed bug #333: CHECK-TYPE now ensures that the type error
3257 signalled, if any, has the right object to be accessed by
3258 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3259 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3260 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3262 * fixed bug #334: programmatic addition of slots using specialized
3263 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3264 and :ALLOCATION :CLASS slots.
3265 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3266 float exponents. (rereported by Peter Seibel)
3267 * fixed a bug: #\Space (and other whitespace characters) are no
3268 longer considered to be macro characters in standard syntax by
3269 GET-MACRO-CHARACTER.
3270 * fixed bug: initialization of condition class metaobjects no longer
3271 causes an instance of the condition to be created. (reported by
3273 * fixed bug: it is now possible to have slots such that
3274 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3275 description is neither :INSTANCE nor :CLASS.
3276 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3277 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3278 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3279 non-standard SLOT-DEFINITION-ALLOCATION values.
3280 * fixed bugs: various race conditions handling exiting threads.
3281 CL-PPCRE's thread torture test now passes.
3282 * fixed arguably-a-bug: GC time proportional to number of threads in
3283 system even when most of them are idle
3284 * optimization: improved performance of BIT and SBIT on bit-vectors.
3285 * .fasl file incompatibility: The fasl file version number has
3286 been incremented because of changes associated with package locks.
3288 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3289 * minor incompatible change: the system no longer provides
3290 optimization hints (conditions which are TYPEP
3291 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3292 mode; these hints are still emitted when higher SPEED optimization
3294 * new contrib module: a sampling profiler (profiling by statistical
3295 sampling, rather than by instrumenting functions) is available as
3296 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3297 * the behaviour of the standard function ED is now customizeable by
3298 third parties through a hook variable: see ED's documentation
3299 string for information on the protocol.
3300 * the compiler no longer emits efficiency notes for (FUNCALL X)
3301 when the type of X is uncertain under default optimization
3303 * fixed bug 276: mutating a binding of a specialized parameter to a
3304 method to something that is not TYPEP the specializer is now
3306 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3307 exhibit the required behaviour on the x86 platform. (thanks to
3308 Peter van Eynde, Eric Marsden and Bruno Haible)
3309 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3310 even for difficult arguments. (reported by Peter Graves)
3311 * fixed bug 141a: the backquote printer now descends quoted
3313 * fixed another bug in backquote printing: no more destructive
3314 modification of the form's list structure. (reported by Brian
3316 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3317 move between its address being taken and the call to
3318 interrupt_thread, fixing a crashing race condition.
3319 * the SB-POSIX contrib implementation has been adjusted so that it
3320 no longer exhibits ridiculously poor performance when constructing
3321 instances corresponding to C structs.
3323 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3324 * minor incompatible change: the sb-grovel contrib now treats C
3325 structures as alien (in the sense of SB-ALIEN) objects rather than
3326 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3327 has implications for memory management of client code
3328 (sb-grovel-returned objects must now be manually managed) and for
3329 type safety (alien objects now have full types).
3330 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3331 used to control emission of compiler diagnostics, rather than the
3332 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3333 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3334 quality should be considered deprecated.
3335 * install.sh now installs the user manual as well
3336 * (not quite a new documentable feature, but worth considering in
3337 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3338 beginnings of a semantically meaningful condition hierarchy is
3339 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3341 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3342 designator as the defaults argument.
3343 * fixed bug: Displaced arrays whose displaced-to array has become
3344 too small now cause ARRAY-DIMENSION to signal an error, providing
3345 for safer bounds-checking. (reported by Bruno Haible)
3346 * fixed bug: DEFCLASS slot definitions with identical :READER and
3347 :WRITER names now signal a reasonable error. (reported by Thomas
3349 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3351 * fixed bug: Invalid slot specification errors now print correctly.
3352 (thanks to Zach Beane)
3353 * fixed bug 320: Shared to local slot value transfers in class
3354 redefinitions now happen corrently from superclasses as
3355 well. (reported by Bruno Haible)
3356 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3358 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3359 improper lists correctly. (reported by Bruno Haible)
3360 * fixed bug 313: source-transform for <fun-name> was erroneously
3361 applied to a call of a value of a variable with name <fun-name>.
3362 (reported by Antonio Menezes Leitao)
3363 * fixed bug 307: The obsolete instance protocol ensures that
3364 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3365 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3366 remove dead unknown-values globs from the middle of the stack.
3367 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3368 easier to resume long computations after using *BREAK-ON-SIGNALS*
3369 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3370 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3371 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3372 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3373 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3374 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3376 * fixed a (fairly theoretical) bug in string printing: if
3377 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3378 does not have array-element-type equal to the most general string
3380 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3381 function name. (thanks to Nikodemus Siivola)
3382 * fixed bug: compile-time format string checker failed on
3383 non-closed ~{. (reported by Thomas F Burdick)
3384 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3385 don't warn on legal loop code involving more than one aggregate
3386 boolean. (thanks to Nikodemus Siivola)
3387 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3388 in keyword position to MAKE-PACKAGE was not being reported as
3390 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3391 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3393 * fixed bugs 280 and 312: the checking for multiple definitions in a
3394 file is less likely to become confused by uses of inline
3396 * fixed bug: the #S reader macro performs the keyword coercion
3397 specified for slot names. (reported by Kalle Niemitalo)
3398 * fixed bug: lambda lists may contain symbols whose names start with
3399 & but are not lambda-list-keywords; their occurrence triggers a
3401 * fixed bug 321: define-method-combination argument lambda lists do
3402 not cause invalid code to be generated when &optional or &aux
3403 variables have default values. (reported by Bruno Haible)
3404 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3405 have CLOS classes; this appears also to have fixed reported
3406 instability in stack exhaustion detection.
3407 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3408 MUFFLE-WARNING when no associated restart is present is now
3410 * optimization: rearranged the expansion of various defining macros
3411 so that each expands into only one top-level form in a
3412 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3414 * optimization: used a previously little-used slot in symbols to
3415 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3417 * fixed some bugs revealed by Paul Dietz' test suite:
3418 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3420 ** Fixed an optimization bug related to inheritance of initforms
3421 from local to shared slots.
3422 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3423 ** CAST optimizer forgot to flush argument derived type.
3424 ** print/read consistency on floats is now orders of magnitude
3425 more likely. (thanks also to Bruno Haible for a similar report
3427 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3428 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3429 for objects of type REAL. Make it so.
3430 ** SXHASH is specified (infelicitously) to respect similarity,
3431 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3432 it so. (thanks to Markus Ziegler)
3433 ** on the Alpha, the compiler succeeds in compiling functions
3434 returning a known number of arguments greater than 63.
3435 ** fixed handling of invalid NIL arguments in keyword position
3437 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3439 ** provided a readably-printable representation for RANDOM-STATE
3441 ** ensured that pathnames, where they have a namestring, always
3442 print using #P"..." syntax.
3444 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3445 * Support for the forthcoming 2.0 version of the NetBSD kernel
3446 running on x86 hardware has been added. (thanks to Perry
3447 E. Metzger most immediately, and others for their past work)
3448 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3449 current release version; SBCL's OpenBSD support had been broken
3450 since about the time of OpenBSD's switch to ELF binary format.)
3451 * [placeholder for DX summary]
3452 ** user code with &REST lists declared dynamic-extent, under high
3453 speed or space and low safety and debug optimization policy.
3454 * The manual has been converted to Texinfo format and the debugger
3455 chapter from the cmucl manual has been added.
3456 * A facility has been added to extract documentation strings from
3457 sbcl and store them as Texinfo-formatted snippets for inclusion in
3458 the manual (via Texinfo's @include directive)
3459 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3460 the test case to Dave Roberts)
3461 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3462 pointers. (reported by Sean Ross)
3463 * bug fix: PROFILE output is printed nicely even for large numerical
3464 values. (thanks to Zach Beane)
3465 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3466 greater than 32 handle EOF correctly.
3467 * bug fix: on X86 an immediate argument of the IMUL instruction is
3468 correctly printed in disassembly. (thanks to Lutz Euler)
3469 * bug fix: class slots in redefined classes preserve their old
3470 values. (thanks to Bruno Haible and Nikodemus Siivola)
3471 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3472 succeeds. (reported by Marco Baringer)
3473 * fixed some bugs revealed by Paul Dietz' test suite:
3474 ** READ-SEQUENCE now works on ECHO-STREAMs.
3475 ** RATIONALIZE works more according to its specification. (thanks
3478 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3479 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3480 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3481 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3482 should matter to you only if you rebind the printer control
3483 variables and then find you want different bindings in the
3484 debugger than in the ordinary execution of your program.)
3485 * The runtime build system has been tweaked to support building
3486 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3487 assembler and linker. (thanks to Nikodemus Siivola)
3488 * Unbound, undefined, undeclared variables now trigger full
3489 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3490 more often programmer error than deliberate exploitation of undefined
3492 * optimization: the hash algorithm for strings has changed to one
3493 that is less vulnerable to spurious collisions. (thanks to Juho
3495 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3496 needless bounds checking. (thanks to Juho Snellman)
3497 * optimization: implemented multiplication as a modular
3498 (UNSIGNED-BYTE 32) operation on the PPC backend.
3499 * fixed some bugs revealed by Paul Dietz' test suite:
3500 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3502 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3503 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3504 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3506 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3508 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3510 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3511 their output stream on EOF from read.
3512 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3513 have been read to end-of-file.
3514 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3516 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3517 description of determination of which consecutive characters
3519 ** Printing the "Space" character with escaping on now yields "#\\ ",
3520 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3521 ** Reading floating-point numbers with *READ-BASE* set to a number
3522 less than 10 works correctly.
3523 ** Reading floating-point numbers with *READ-BASE* set to a number
3524 more than 10 works correctly.
3525 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3526 the readtable currently in effect.
3528 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3529 * minor incompatible change: parsing of namestrings on a physical
3530 (Unix) host has changed; numbers after the final #\. in a
3531 namestring are no longer interpreted as a version field. This is
3532 intented to be largely invisible to the user, except that the
3533 meaning of the namestring "*.*.*" has changed: it now refers to a
3534 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3535 should usually be replaced by
3536 (make-pathname :name :wild :type :wild :version :wild)
3537 with the added benefit that this is more likely to be portable.
3538 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3539 option to OPEN now signals an error if the file being opened
3540 exists; this may have an impact on existing code.
3541 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3542 signals received, on the PowerPC platforms (both Linux and
3543 Darwin). (thanks to Pierre Mai for pointing out the location of
3545 * several fixes on OS X: The system now builds and runs cleanly on
3546 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3547 (thanks to Brian Mastenbrook)
3548 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3549 second-resolution: integer multiples of 1/3600 between -24 and 24.
3550 (thanks to Vincent Arkesteijn)
3551 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3552 type when called with 1 argument; PEEK-CHAR checked type of
3553 PEEK-TYPE only after having read first character from a
3554 stream. (reported by Peter Graves)
3555 * bug fix: the garbage collector now has much better locality
3556 behaviour, and in particular no longer treats all memory as being
3557 exhausted when many small objects point to each other in a deeply
3559 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3560 recognized as being TYPEP their class.
3561 * bug fix: the PUSHNEW documentation string has been corrected.
3562 (thanks to Vincent Arkesteijn)
3563 * bug fix: defaulting of the value for the last of an atypically
3564 large number of multiple values being bound was not being
3565 performed correctly on the Alpha or PPC platforms
3566 * optimization: implemented multiplication as a modular
3567 (UNSIGNED-BYTE 32) operation on the x86 backend.
3568 * optimization: SEARCH on simple-base-strings can now be open-coded.
3569 (see also contrib/compiler-extras.lisp for inspiration for
3570 teaching the compiler about the Boyer-Moore algorithm).
3571 * value, returned by MAX (and MIN) called with several EQUALP, but
3572 not EQL, arguments now does not depend on compiler settings.
3573 * fixed some bugs revealed by Paul Dietz' test suite:
3574 ** in stack analysis liveness information is propagated from
3575 non-local entry points.
3576 ** pathwise CAST removing failed when the CAST node did not start
3578 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3579 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3581 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3582 host is already defined.
3583 ** RENAME-FILE works on streams instead of signalling an internal
3585 ** PEEK-CHAR uses the current readtable when determining whether
3586 or not a character is whitespace.
3587 ** MERGE-PATHNAMES handles the case when the pathname does not
3588 specify a name while the default-pathname specifies a version.
3589 ** Pathnames now stand a better chance of respecting print/read
3591 ** Attempting to use standardized file system operators with a
3592 pathname with invalid :DIRECTORY components signals a
3594 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3596 ** DIRECTORY on logical pathnames is more correct.
3597 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3598 signal a TYPE-ERROR if their argument is not a stream.
3599 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3600 designator argument does not designate a stream.
3601 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3602 examining the synonym.
3603 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3605 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3606 element-type larger than ([UN]SIGNED-BYTE 32).
3608 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3609 * When built with the :SB-FUTEX feature, threaded builds now take
3610 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3611 for faster/more reliable mutex and condition variable support.
3612 * Incompatible change (but one you probably shouldn't have been using
3613 anyway): the interface and code for arbitrating between multiple
3614 threads in the same user session has been redesigned.
3615 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3616 error when called without an explicit environment argument.
3617 (thanks to Nikodemus Siivola)
3618 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3619 confused about their position. (thanks to Adam Warner and Gerd
3621 * bug fix: Pretty printing backquoted forms with unquotations in the
3622 argument list position of various code constructs such as LAMBDA
3623 now works correctly. (reported by Paul Dietz)
3624 * bug fix: Pretty printing unquotations no longer loses all
3625 stream position information.
3626 * optimization: performance of string output streams is now less
3627 poor for multiple small sequence writes.
3628 * optimization: performance of CSUBTYPEP in the presence of complex
3629 expressions involving CONS and NOT many times has been improved.
3630 (reported by Paul Dietz)
3631 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3633 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3634 streams for the REPL, for the debugger, and so on. (thanks to
3636 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3637 * fixed some bugs revealed by Paul Dietz' test suite:
3638 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3639 is ignored if it is too small, rather than propagating through
3640 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3641 ** extremely complex negations of CONS types were not being
3642 sufficiently canonicalized, leading to inconsistencies in
3644 ** VALUES tranformer lost derived type.
3646 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3647 * fixed a bootstrapping bug: the build process no longer assumes
3648 that the various BOOLE-related constants have the same value in
3649 host and target lisps. (noted by Paul Dietz' test suite on an
3650 SBCL binary built from CLISP)
3651 * The system can now be dynamically linked on the MIPS platform,
3652 which enables dynamic loading of foreign code from Lisp. (thanks
3653 to Ralf Baechle for discussions on the MIPS ABI)
3654 * The system now records debugging information for its own source
3655 files in a filesystem-position-independent manner, relative to
3656 the "SYS" logical host.
3657 * fixed a compiler bug: MV-LET convertion did not check references
3658 to the "max args" entry point. (reported by Brian Downing)
3659 * tweaked disassembly notes to be less confident about proclaiming
3660 some instruction as an LRA. (thanks to Brian Downing)
3661 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3662 now each have their own history, command character, and other
3663 characteristics. (thanks to David Lichteblau)
3664 * fixed some bugs revealed by Paul Dietz' test suite:
3665 ** compiler failure in compiling LOGAND expressions including a
3667 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3668 shift greater than 32.
3669 ** FLUSH-DEST did not mark blocks for type check regeneration.
3670 ** HANDLER-CASE failed to accept declarations in handler clauses
3671 in some circumstances.
3673 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3674 * New code in contrib/sb-introspect (still probably not entirely
3675 stable yet) provides some support for smart Lisp development
3676 environments like SLIME.
3677 * The conditions signalled for errors occurring when loading .fasl
3678 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3679 in a way which should help ASDF recover gracefully.
3680 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3681 stuff has been cleaned up. If you code contrib/ stuff, this might
3682 affect you, and you can look at contrib/README, contrib/STANDARDS,
3683 and/or the 0.8.4.27 diff to check.
3684 * In full calls the compiler now does not generate checks for declared
3685 argument types for all arguments.
3686 * various threading fixes
3687 ** and some experimental patches which didn't make it into
3688 the main tree for this release, but which are shipped in
3689 contrib/experimental-thread.patch as a possible fix for some
3690 failures (deadlock, spinning...) in GC-intensive multithreaded
3692 * fixed PPC build problem (source code incompatibility of different
3693 library versions): added offsetof() hackery which attempts to divine
3694 where glibc maintainers put uc_mcontext today
3695 * fixed bug 282: compiler does not trust type assertions while passing
3696 arguments to a full call.
3697 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3698 &OPTIONAL VALUES type parameter.
3699 * fix bug 214: algorithm for noting rejected templates is now more
3700 similar to that of template seletion. (also reported by rydis on
3702 * fixed bug 141b: printing backquoted information readably and prettily
3703 inserts a space where necessary.
3704 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3705 (CHARACTER 10) are now reported as errors, rather than propagated
3706 as unknown types. (reported by piso on #lisp)
3707 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3708 with values NIL and :ERROR. (thanks to Milan Zamazal)
3709 * fixed bug 191c: CLOS now does proper keyword argument checking as
3710 described in CLHS 7.6.5 and 7.6.5.1.
3711 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3712 longer raise an error; further, using a list as a for-as-arithmetic
3713 counter now raises a meaningful error.
3714 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3715 now understood by sequence creation functions such as MAKE-SEQUENCE
3717 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3718 a STRING-INPUT-STREAM.
3719 * compiler enhancement: SIGNUM is now better able to derive the type
3721 * type declarations inside WITH-SLOTS are checked. (reported by
3723 * fixed some bugs revealed by Paul Dietz' test suite:
3724 ** incorrect optimization of TRUNCATE for a positive first
3725 argument and negative second.
3726 ** compiler failure in let-convertion during flushing dead code.
3727 ** compiler failure while deriving type of TRUNCATE on an
3728 interval, containing 0.
3729 ** ASH of a negative bignum by a negative bignum count now returns
3731 ** intersection of CONS types now canonicalizes properly, fixing
3732 inconsistencies in SUBTYPEP.
3734 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3735 * incompatible change: The --disable-debugger command line
3736 option now clobbers the debugger at a more fundamental
3737 level, by redefining #'INVOKE-DEBUGGER instead of by
3738 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3739 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3740 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3741 enter the debugger REPL and then suffer recursive errors
3742 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3743 while under the new system, BREAK in --disable-debugger mode
3744 terminates the system just as an unhandled error would.
3745 * fixed compiler performance when processing loops with a step >1;
3746 * bug fix: DOCUMENTATION now retrieves generic function
3747 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3748 support has been systematized, and now supports the methods
3749 specified by ANSI, along with a default method and a method for
3750 slot documentation. (reported by Nathan Froyd)
3751 * bug fix: effective methods associated with a generic function are
3752 no longer cached over a change of that generic function's method
3753 combination. (reported by Andreas Fuchs)
3754 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3755 names a non-existent directory. (thanks to Andreas Fuchs)
3756 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3757 the PPC platform, lead to stack corruption; this has been fixed.
3758 (reported by Rainer Joswig)
3759 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3760 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3761 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3762 arithmetic in general, is now much more reliable on the PPC
3764 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3765 platform now returns the right answer.
3766 * optimization: restored some effective method precomputation in
3767 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3768 precomputation is now tunable.
3769 * optimization: compiler-internal data structure use has been
3770 reviewed, and changes have been made that should improve the
3771 performance of the compiler by about 20%.
3772 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3773 simple-base-strings and simple-bit-vectors is improved.
3774 * optimization: the optimization of 32-bit logical and arithmetic
3775 functions introduced in version 0.8.3 on the x86 has been
3776 implemented on the mips, ppc and sparc platforms; an
3777 implementation of the same facility, but for 64-bit arithmetic,
3778 has been added for the alpha.
3779 * microoptimization: the compiler is better able to make use of the
3780 x86 LEA instruction for multiplication by constants.
3781 * bug fix: in some situations compiler did not report usage of
3782 generic arithmetic in (SPEED 3) policy.
3783 * bug 145b fix: compiler used wrong type specifier while converting
3784 MEMBER-types to numeric.
3785 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3787 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3788 index argument now works properly on the Alpha platform.
3789 * bug fix: floating point exception treatment on the Alpha platform
3791 * bug fix: FILE-POSITION works much better on string input and
3792 output streams. (thanks to Nikodemus Siivola)
3793 * bug fix: many threading/garbage collection symptoms sorted.
3794 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3795 might be pseudo-atomic.
3796 * internal change: Stopping for GC is now done with signals not
3797 ptrace. GC is now done in whichever thread wanted it, instead of
3799 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3801 * bug fix: result form in DO is not contained in the implicit
3803 * incompatible change: ICR structure is changed; the value part of
3804 CONTINUATION is now called LVAR; corresponding functions are
3805 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3806 * added type deriver for ISQRT (thanks to Robert E. Brown).
3807 * bug fix: better support for loading from the command line when an
3808 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3810 * fixed some bugs revealed by Paul Dietz' test suite:
3811 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3812 ** ROUND and FROUND now give the right answer when given very
3813 small float arguments.
3814 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3816 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3817 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3818 ** LCM should return a non-negative integer.
3819 ** PARSE-INTEGER returned the index of a terminator instead of the
3820 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3821 ** PARSE-INTEGER returned an incorrect index being applied to a
3823 ** LCM with two arguments of 0 returns 0 rather than signalling
3825 ** unsigned addition of a 32-bit constant with the high bit set no
3826 longer causes an internal compiler error on the x86.
3827 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3828 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3829 with negative last argument.
3830 ** byte specifiers with zero size and position no longer cause
3831 an error during type derivation.
3832 ** bignum multiplication on the Alpha platform now returns the
3834 * porting: The system now builds on SuSE AMD64, although it still
3835 generates a 32-bit binary.
3836 * .fasl file incompatibility: The fasl file version number has
3837 been incremented (because of the changes to internal compiler
3838 data structures referred to above).
3840 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3841 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3842 more accurately, on the Darwin kernel running on PowerPC hardware.
3843 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3844 * Compiler code deletion notes now signal a condition of type
3845 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3846 an associated MUFFLE-WARNING restart.
3847 * The compiler now performs limited argument count validation of
3848 constant format strings in FORMAT, and where appropriate in ERROR,
3849 CERROR and WARN. (thanks to Gerd Moellmann)
3850 * New ASDF-INSTALL contrib can be used for automatic download and
3851 installation of third-party Lisp code from CCLAN or other sites
3853 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3854 which forces another thread to execute a function supplied by the
3856 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3857 now accept and act upon their :ELEMENT-TYPE keyword argument.
3858 (reported by Martin Atzmueller, Edi Weitz)
3859 * bug fix: FILE-POSITION now accepts position designators up to
3860 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3861 is the greater. (thanks to Patrik Nordebo)
3862 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3863 Kalle Olavi Niemitalo)
3864 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3865 printable. (reported by Eric Marsden)
3866 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3867 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3868 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3869 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3870 (thanks to Stig Sandoe)
3871 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3872 UNREAD-CHAR now correctly includes the unread character in the
3873 target sequence. (thanks to Gerd Moellmann)
3874 * bug fix in threaded builds: the system can now be suspended and
3875 resumed by shell job control with minimal disruption.
3876 * bug fixes in times and timezones >2038AD
3877 * better handling of "where is GNU make?" problem in build scripts
3878 (thanks to Nikodemus Siivola)
3879 * new optimization: inside a named function any reference to a
3880 function with the same name is considered to be a self-reference;
3881 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3882 optimization quality.
3883 * new optimization on x86: logical functions and + now have
3884 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3885 used when the result is truncated to 32 bits.
3886 * VALUES declaration is partially enabled.
3887 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3888 * fixed some bugs revealed by Paul Dietz' test suite:
3889 ** The system now obeys the constraint imposed by
3890 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3891 types form a lattice under type intersection.
3892 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3893 ** ASSOC now ignores NIL elements in an alist.
3894 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3895 and (1+ MOST-POSITIVE-FIXNUM) answers.
3896 ** The addition of a method with invalid qualifiers to a generic
3897 function does not cause an error to be signalled immediately;
3898 a warning is signalled, and the error is generated only on
3899 calling the generic function.
3900 * changed .fasl file version number, in part to add type codes for
3901 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3902 obscure ANSI requirements
3904 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3905 * fixed bug 148: failure to inline-expand a local function left
3906 garbage, confusing the compiler.
3907 * fixed bugs 3cd: structure slot readers perform type check if the
3908 slot can have an invalid value (i.e. it is either not initialized
3909 or can be written with a less specific slot writer).
3910 * bug fix: the compiler now traps array references to elements off
3911 the end of an array; previously, the bounds checking in some
3912 circumstances could go off-by-one.
3913 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3915 * type declarations for array element types now obey the description
3916 on the CLHS page "Declaration TYPE", as per discussions on
3917 sbcl-help around 2003-05-08. This means that a declaration
3918 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3919 declaration, all references to BAR will be asserted or assumed
3920 (with THE, so dependent on compiler policy) to involve objects of
3921 type FOO. Note that no such declaration is implied in
3922 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3923 * declared types of functions from the "Conditions"
3924 chapter. (reported by Paul Dietz)
3925 * bug fix: CERROR accepts a function as its first argument.
3926 * bug fix: NTH an NTHCDR accept a bignum as index
3927 arguments. (reported by Adam Warner)
3928 * optimization: character compare routines now optimize comparing
3929 against a constant character. (reported by Gilbert Baumann)
3930 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3931 argument now works properly on the MIPS platform.
3932 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3933 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3934 declared to have a functional type, does not cause an error
3936 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3937 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3938 * fixed bug: if last continuation of a deleted block has a
3939 destination, this destination should be deleted too. (reported by
3941 * fixed a bug in the bootstrap process: the host compiler's values
3942 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3943 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3944 test case from Patrik Nordebo)
3945 * improved the ability of the disassembler on the PPC platform to
3946 provide helpful disassembly notes.
3947 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3948 the class in more cases than previously.
3949 * bug fix: FILE-POSITION now understands :START and :END for
3950 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3951 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3952 8) data. (thanks to David Lichteblau)
3953 * bug fix: it is possible to add a method to a generic function
3954 without lambda list.
3955 * bug fix: reader failed to signal END-OF-FILE inside an
3956 object representation. (reported by Nikodemus Siivola)
3957 * fixed some bugs revealed by Paul Dietz' test suite:
3958 ** LAST and [N]BUTLAST should accept a bignum.
3959 ** condition slot accessors are methods.
3960 ** (VECTOR NIL) is a subtype of STRING.
3962 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3963 * minor incompatible change: some nonsensical specialized lambda
3964 lists (used in DEFMETHOD) which were previously ignored now signal
3966 * minor incompatible change: the system is now aware of the types of
3967 variables in the COMMON-LISP package, and will signal errors for
3968 most violations of these type constraints (where previously they
3969 were silently accepted).
3970 * minor incompatible change: COMPILE-FILE now uses the freedom
3971 afforded (ANSI 3.2.2.3) to use derived function types for
3972 functions defined in the same file. This also permits the system
3973 to warn on static type mismatches and function
3974 redefinition. (Currently it does not work with high DEBUG level.)
3975 * minor incompatible change: VALUES declaration is disabled.
3976 * When issuing notes, the compiler now signals a condition of type
3977 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3978 restart for use in user handlers. It is expected that the
3979 COMPILER-NOTE condition will eventually become a condition
3980 supertype to a hierarchy of note types, which will then be
3981 handleable in a similar fashion. However, at the moment, no such
3982 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3983 but it's an implementation detail, not a classification for the
3985 * Changes in type checking closed the following bugs:
3986 ** type checking of unused values (192b, 194d, 203);
3987 ** template selection based on unsafe type assertions (192c, 236);
3988 ** type checking in branches (194bc).
3989 * A short form of VALUES type specifier has ANSI meaning (it has
3990 increased the number of situations when SBCL cannot perform type
3992 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3993 keywords or constants is permissible.
3994 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3995 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3996 classes. (thanks to Antonio Martinez)
3997 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3998 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3999 argument to a pretty-print stream. Instead, it leaves any such
4000 operations to DESCRIBE-OBJECT methods.
4001 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4003 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4004 lambda lists. (thanks to David Lichteblau)
4005 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4006 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4007 (thanks to Gerd Moellmann)
4008 * fixed bug 246: increased compilation speed of long
4009 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4011 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4013 * DEFCONSTANT now throws a condition of type
4014 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4015 constant to a non-EQL value; CONTINUE and ABORT restarts
4016 respectively change and preserve the value.
4017 * fixed bug 63: The code walker, part of the implementation of CLOS,
4018 is now better at handling symbol macros.
4019 * bug fix: There is no longer an internal implementation type named
4020 CL:LENGTH. (reported by Raymond Toy)
4021 * bug fix: In macro-like defining macros/special operators the
4022 implicit block does not enclose the lambda list.
4023 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4024 enclosed in parentheses) are not suitable as type specifiers, and
4025 their use properly signals an error now.
4026 * bug fix: An argument count mismatch for a type specifier in code
4027 being compiled no longer causes an unhandled error at compile
4028 time, but signals a compile-time warning.
4029 * fixed simple vector readable printing
4030 * bug fix: DESCRIBE takes more care over whether the class
4031 precedence list slot of a class is bound before accessing it.
4032 (reported by Markus Krummenacker)
4033 * bug fix: FORMATTER can successfully compile pretty-printer format
4034 strings which use variants of the ~* directive inside.
4035 * bug fix: SEARCH now applies its TEST predicate to the elements of
4036 the arguments in the correct order. (thanks to Wolfhard Buss)
4037 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4038 in type inference. (thanks to Robert E. Brown)
4039 * bug fix: Reading in symbols with an explicit package name of ""
4040 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4041 * fixed some bugs revealed by Paul Dietz' test suite:
4042 ** NIL is now allowed as a structure slot name.
4043 ** Arbitrary numbers, not just REALs, are allowed in certain
4044 circumstances in LOOP for-as-arithmetic clauses.
4045 ** Multiple class redefinitions before slot access no longer
4046 causes a type error.
4047 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4048 association between the name and a class.
4049 ** Generic functions with non-standard method-combination and over
4050 five methods all of which return constants no longer return NIL
4051 after the first few invocations. (thanks to Gerd Moellmann)
4052 ** CALL-NEXT-METHOD with no arguments now passes the original
4053 values of the arguments, even in the presence of assignment.
4054 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4056 ** DISASSEMBLE works with closures and funcallable instances.
4057 ** ADD-METHOD now returns the generic function, not the new method.
4058 ** FIND-METHOD signals an error if the lengths of the specializers
4059 is incompatible with the generic function, even if the ERRORP
4061 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4062 which its argument is a member.
4063 ** DEFCLASS only redefines the class named by its class-name
4064 argument if that name is the proper name of the class;
4065 otherwise, it creates a new class.
4066 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4067 of the UNBOUND-SLOT condition to the name of the slot.
4068 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4069 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4070 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4071 SLOT-MAKUNBOUND in the specified fashion.
4073 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4074 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4075 cross-compilation host. As a consequence, we can now bootstrap our
4076 way up to SBCL starting with a bare gcc toolchain and human-readable
4077 source code (first the source to CLISP, then the source to SBCL).
4078 * A contributed module containing a partial implementation of the
4079 simple-streams interface has been included. (thanks to Rudi
4081 * A contributed module implementing the RFC1321 Message Digest
4082 Algorithm, known as MD5, has been included.
4083 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4084 no longer has any effect, as the code controlled by this feature
4085 has been deleted. (As far as we know, no-one has ever built using
4086 this feature, and its semantics were confused in any case).
4087 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4088 work on conditions (as required by the ANSI specification),
4089 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4090 expected behaviour on conditions. Users should note, however,
4091 that such behaviour is not required by the ANSI specification,
4092 and so use of this behaviour may render their code unportable.
4093 * fixed some bugs revealed by Paul Dietz' test suite:
4094 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4096 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4097 ** SXHASH on condition objects no longer returns NIL.
4098 ** :ALLOCATION :CLASS slots are better treated; their values are
4099 updated on class redefinition, and initforms inherited from
4100 superclasses are applied.
4101 ** REMOVE-METHOD returns its generic function argument even when
4102 no method was removed.
4103 ** SHARED-INITIALIZE now initializes the values of the requested
4104 slots, including those with :ALLOCATION :CLASS.
4105 ** ALLOCATE-INSTANCE now works on structure classes defined via
4106 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4108 ** SLOT-EXISTS-P now works on conditions, as well as structures
4110 ** MAKE-LOAD-FORM now has the required methods on
4111 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4112 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4113 keyword, and now implements the SLOT-NAMES argument.
4114 ** methods with &OPTIONAL arguments no longer allow too many
4115 arguments to be passed in the call without error.
4116 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4117 option is consistent with the required arguments of the generic
4118 function lambda list.
4119 * bug fix: REQUIRE accepts a string designator. (Thanks to
4121 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4122 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4123 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4124 * bug fix: The compiler now checks for duplicated variables in macro
4126 * bug fix: SETQ on globals returns the correct value.
4127 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4128 not a COMPILER-ERROR (followed by some other strange error on
4129 choosing the CONTINUE restart).
4130 * bug fix: make.sh and friends are now more consistent in the way that
4131 they look for GNU "make".
4133 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4134 * experimental native threads support (on x86 Linux >=2.4 only).
4135 This is not compiled in by default: you need to add :SB-THREAD to
4136 the target features. See the "Beyond ANSI" chapter of the manual
4138 * fix for longstanding nonANSIism: The old distinction between
4139 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4140 The return value from CL:FIND-CLASS is now a CLOS class, and
4141 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4142 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4143 * An interface to the MetaObject Protocol, as described in Kiczales,
4144 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4145 MIT Press, 1991, is available from the SB-MOP package.
4146 * incompatible change: the SB-PCL package should now be considered
4147 a private implementation detail, and no longer a semi-private MOP
4149 * minor incompatible change: due to rearrangement for threads, the
4150 control stack and binding stack are now allocated at arbitrary
4151 addresses instead of being hardcoded per-port. Users affected by
4152 this probably have to be doing advanced things with shared
4153 libraries, and will know who they are.
4154 * minor incompatible change: Previously, all --eval forms used were
4155 processed with READ before any of them were processed with EVAL.
4156 Now each --eval form is processed with both READ and EVAL before
4157 the next --eval form is processed. (Thus package operations like
4158 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4159 work as the user might reasonably expect.)
4160 * minor incompatible change: *STANDARD-INPUT* is now only an
4161 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4163 * minor incompatible change: Y-OR-N-P is now character-oriented,
4164 not line oriented. Also, YES-OR-NO-P now works without errors.
4165 (thanks to Antonio Martinez)
4166 * sb-aclrepl module improvements: an integrated inspector, added
4167 repl features, and a bug fix to :trace command.
4168 * Known functions, which cannot be open coded by the backend, are
4169 considered to be able to check types of their arguments. (fixing
4170 a bug report by Nathan J. Froyd)
4171 * fixed a bug in computing method discriminating functions: It is
4172 now possible to define methods specialized on classes which have
4173 forward-referenced superclasses. (thanks to Gerd Moellmann)
4174 * fixed evaluation order in optional entries (reported by Gilbert
4176 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4177 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4178 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4179 required-by-AMOP NAME argument, as well as CLASS and
4180 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4181 * fixed bug 20: DEFMETHOD can define methods using names that are
4182 not the proper names of classes to designate class specializers.
4183 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4184 Unix file descriptors, instead of blowing up. (thanks to Antonio
4186 * Garbage collection refactoring: user-visible change is that a
4187 call to the GC function during WITHOUT-GCING will not do garbage
4188 collection until the end of the WITHOUT-GCING. If you were doing
4189 this you were probably losing anyway.
4190 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4191 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4192 TYPEP the latter but not the former.
4193 * The compiler issues a full WARNING for calls to undefined functions
4194 with names from the CL package.
4195 * MAP-INTO for a vector destination is open coded. (reported by
4196 Brian Downing on c.l.l)
4197 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4198 documentation string.
4199 * fixed some bugs revealed by Paul Dietz' test suite:
4200 ** COPY-ALIST now signals an error if its argument is a dotted
4202 ** Condition slots are now accessed more correctly in the presence
4203 of multiple initargs for a given slot.
4204 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4205 exclude restarts of the same name associated with a different
4207 ** DEFCLASS of forward-referenced classes with another
4208 forward-referenced class in the superclasses list no longer
4210 ** Condition slots are now initialized once each, not multiple
4211 times. (thanks to Gerd Moellmann)
4212 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4214 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4215 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4216 arguments contain duplicated elements.
4217 ** RESTART-CASE understands local macros.
4218 ** RESTART-CASE associates exactly its own restarts with a condition.
4219 ** ENDP in safe mode checks its argument to be of type LIST.
4220 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4221 in question is unbound.
4222 ** Optimized MAKE-INSTANCE functions no longer cause internal
4223 assertion failures in the presence of duplicate initargs.
4224 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4225 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4226 propagated even in the ctor optimized implementation of
4228 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4230 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4231 * a better implementation of SXHASH on (simple) bit vectors,
4232 measured both in execution speed and in distribution of results
4233 over the positive fixnums, has been installed. Likewise, a better
4234 implementation of EQUAL for simple bit vectors is now available.
4235 * fixed CEILING optimization for a divisor of form 2^k.
4236 * fixed bug 240 (emitting extra style warnings "using the lexical
4237 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4238 by Antonio Martinez)
4239 * fixed SXHASH, giving different results for NIL depending on type
4240 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4241 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4242 variable. (found by Rolf Wester)
4243 * SBCL does not ignore type declarations for special
4244 variables. (reported by rif on c.l.l 2003-03-05)
4245 * some bug fixes in contrib/sb-aclrepl/
4246 * fixed some bugs revealed by Paul Dietz' test suite:
4247 ** a bug in the CONS type specifier, whereby the CAR and CDR
4248 types got intertwined, has been fixed;
4249 ** the type system is now able to reason about the interaction
4250 between INTEGER and RATIO types more completely;
4251 ** APPEND, [N]REVERSE and NRECONC check that those their
4252 arguments, which must be proper lists, are really so;
4253 ** An array specialized to be unable to hold elements has been
4254 implemented, as required -- yes, really -- by ANSI;
4255 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4256 on malformed property lists;
4258 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4259 * incompatible packaging change: in line with Unix convention,
4260 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4261 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4262 * REQUIRE and PROVIDE are now optionally capable of doing something
4263 useful. See the documentation string for REQUIRE.
4264 * infrastructure for a managed SBCL contrib system: contributed
4265 modules in this release include:
4266 ** the ASDF system definition facility;
4267 ** an interface to the BSD Sockets API;
4268 ** an ACL-like convenience interface to the repl;
4269 (thanks to Kevin Rosenberg)
4270 ** an implementation of ROTATE-BYTE, with efficient implementation
4272 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4273 gives a closer approximation to the right answer than previously.
4274 (thanks to Raymond Toy)
4275 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4276 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4277 optional environment arguments, as required by ANSI.
4278 * fixed bugs in other functions taking environment objects, allowing
4279 calls with an explicit NIL environment argument to be compiled
4281 * fixed bug 228: primary return values from
4282 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4283 COMPILE or FUNCTION.
4284 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4285 :TYPE will no longer signal errors on innocuous objects.
4286 * fixed bug 231b: SETQ is better at respecting type declarations in
4287 the lexical environment.
4288 * fixed a bug in DEFCLASS: classes named by symbols with no or
4289 unprintable packages can now be defined.
4290 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4291 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4292 * fixed compiler failure related to checking types of functions.
4293 (reported by Robert E. Brown)
4294 * the compiler is now much more consistent in its error-checking
4295 treatment of bounding index arguments to sequence functions: in
4296 (SAFETY 3) code, errors will be signalled in almost all cases if
4297 invalid sequence bounding indices are passed to functions defined
4298 by ANSI to operate on sequences.
4299 * fixed a bug in the build procedure: documentation of SBCL-specific
4300 packages is now preserved and available in the final Lisp image.
4301 * lifted FDEFINITION lookup out of loops in the implementation of
4302 many list operations. (thanks to Robert E. Brown)
4303 * fixed a bug in the reader: the #n# reader macro now works for
4304 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4305 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4306 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4307 E. Brown and Tony Martinez respectively)
4308 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4309 SLOT-BOUNDP: in particular, it is now able to optimize them much
4310 better, and is now not vulnerable to having packages renamed.
4311 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4312 always called when a slot is not present in an instance. (thanks
4314 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4315 longer signal an error on unreading a character following EOF on
4316 the previous constituent stream. (thanks to Tony Martinez)
4317 * fixed some bugs revealed by Paul Dietz' test suite:
4318 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4319 not just nonnegative fixnums;
4320 ** the logical bit-array operators such as BIT-AND now accept an
4321 explicit NIL for their "opt-arg" argument (to indicate a
4322 freshly-consed result bit-array);
4323 ** ELT now signals an error on an invalid sequence index in safe
4325 ** the type system is now cleverer about negations of numeric
4326 types, and consequently understands the BIGNUM and RATIO types
4328 ** the type system is now cleverer about the interaction between
4329 INTEGER and RATIO types: while bugs still remain, many more
4330 cases are accurately computed;
4331 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4332 if it is in the last clause;
4333 ** CONSTANTLY now correctly returns a side-effect-free function in
4335 ** DECLARE is no longer treated as a special-operator; in
4336 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4337 * incremented fasl file version number due to the change in the
4338 DEFSTRUCT-SLOT-DESCRIPTION structure.
4340 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4341 * minor incompatible change: code processed by the "interpreter" or
4342 EVAL now has a compilation optimization policy of (DEBUG 2)
4343 (changed from (DEBUG 1)) to improve debuggability of interactive
4344 development, and to allow the use of the debug RETURN command in
4346 * an experimental implementation of the RETURN command for the
4347 debugger has been included. (thanks to Frederik Kuivinen)
4348 * fixed bug 62: constraints were not propagated into a loop.
4349 * fixed bug in embedded calls of SORT (reported and investigated by
4351 * fixed some bugs revealed by Paul Dietz' test suite:
4352 ** printing and reading of arrays with some dimensions having
4353 length 0 (thanks to Gerd Moellmann);
4354 ** BOA constructor with &AUX argument without a default value does
4355 not cause a type error;
4356 ** CONSTANTP now returns true for all self-evaluating objects.
4358 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4359 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4360 accessors that are related by inheritance, as specified in the
4361 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4362 Valtteri Vuorikoski)
4363 * The compiler is now able to inline functions that were defined in
4364 a complex lexical environment (e.g. inside a MACROLET).
4365 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4367 * Support for the upcoming FreeBSD-5.0 release has been included.
4368 (thanks to Dag-Erling Smorgrav)
4369 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4370 effect when it is not in a toplevel context.
4371 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4372 stand a better chance of being correct. (thanks to Gerd
4374 * fixed bug in COERCE, which now signals an error on coercing a
4375 rational to a bounded real type which excludes the expected
4377 * The compiler is now able to derive types more accurately from the
4378 COERCE and COMPILE functions.
4379 * fixed bug 223: functional binding is considered to be constant
4380 only for symbols in the CL package.
4381 * fixed bug 231: SETQ did not check the type of a variable being set
4382 (reported by Robert E. Brown)
4383 * A new optimization for MAKE-INSTANCE has been included, fixing
4384 various bugs (including relating to :ALLOCATION :CLASS slots and
4385 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4387 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4388 ** As required by ANSI, LOOP now disallows anonymous collection
4389 clauses such as COLLECT I in conjunction with aggregate boolean
4390 clauses such as THEREIS (= I 1);
4391 ** LOOP now signals an error when any variable is reused in the
4392 same loop (including the potentially useful construct analogous
4393 to WITH A = 1 WITH A = (1+ A);
4394 ** IT is only a special loop symbol within the first clause of a
4395 conditional loop clause;
4396 ** LOOP with a typed iteration variable over a hashtable now
4397 signals a type error iff it should.
4398 * fixed some other bugs revealed by Paul Dietz' test suite:
4399 ** FILE-STREAM now names the class previously known as FD-STREAM;
4400 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4401 argument) no longer signals an error;
4402 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4403 of the slot symbol, rather than using the current package
4404 ((:CONC-NAME "") continues to intern the slot's name in the
4406 * incremented fasl file version number, because of the incompatible
4407 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4408 of the new implementation of DEFINE-COMPILER-MACRO.
4410 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4411 * Support for building SBCL for MIPS platforms running in
4412 little-endian mode has now been checked in, and basic
4413 functionality on said platforms verified.
4414 * minor incompatible change: PCL now records the pathname of a file
4415 in which methods and the like are defined, rather than its
4417 * minor incompatible change: TRUENAME now considers the truename of
4418 a file naming a directory to be the pathname with :DIRECTORY
4419 component indicating that directory.
4420 * minor incompatible change: a NAMED clause in the extended form of
4421 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4422 reason for the previous behaviour is unclear.
4423 * more systematization and improvement of CLOS and MOP conformance
4424 in PCL (thanks to Gerd Moellman and Pierre Mai):
4425 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4427 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4428 primary methods with no specializers;
4429 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4431 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4432 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4433 FORWARD-REFERENCED-CLASSes; error reporting on
4434 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4436 ** SXHASH on CLOS instances now uses a slot internal to the
4437 instance to return different numbers on distinct instances,
4438 while preserving the same return value through invocations of
4440 ** DEFMETHOD signals errors when methods with longer incongruent
4441 lambda lists are added to generic functions;
4442 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4443 CLASS, as specified in AMOP;
4444 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4445 on the order returned by the primary method for classes of
4446 class STANDARD-CLASS;
4447 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4448 * fixed some bugs shown by Paul Dietz' test suite:
4449 ** DOLIST puts its body in TAGBODY;
4450 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4452 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4453 value producing form;
4454 ** if more variables are given to PROGV than values, extra
4455 variables are bound and made to have no value;
4456 ** NSUBSTITUTE on list arguments gets the right answer with
4458 ** ELT signals an error of type TYPE-ERROR when the index argument
4459 is not a valid sequence index;
4460 ** LOOP signals (at macroexpansion time) an error of type
4461 PROGRAM-ERROR when duplicate variable names are found;
4462 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4463 ** FUNCALL of special-operators now cause an error of type
4465 ** PSETQ now works as required in the presence of side-effecting
4466 symbol-macro places;
4467 ** NCONC accepts any object as its last argument;
4468 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4470 ** loop-for-as-package does not require a package to be explicitely
4472 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4474 * fixed bug 166: compiler preserves "there is a way to go"
4475 invariant when deleting code.
4476 * fixed bug 172: macro lambda lists with required arguments after
4477 &REST arguments now cause an error to be signalled. (thanks to
4479 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4480 bug. (thanks to Matthew Danish)
4481 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4483 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4484 arguments are lexically rebound. (thanks to Gerd Moellmann and
4486 * fixed bug 194: error messages are now more informative when there
4487 is no primary method applicable in a call to a generic
4488 function. (thanks to Gerd Moellmann)
4489 * fixed bug in command line argument checking (thanks to Julian
4491 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4492 (thanks to Matthew Danish)
4493 * incremented fasl file version number, because of the
4494 SXHASH-related changes in the layout of CLOS data structures
4496 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4497 * minor incompatible change: The runtime (the Unix executable named
4498 "sbcl") is now much pickier about the .core files it will load.
4499 Essentially it now requires .core files to descend from the same
4500 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4501 as the runtime does. (The intent is to prevent the crashes which
4502 can occur, and which can even be reported as mysterious failures,
4503 when people patch the sources or change the build parameters
4504 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4505 sbcl and .core files.)
4506 * fixed bug: VALUES-LIST is no longer optimized away.
4507 * fixed bug 142: The FFI conversion of C string values to Lisp
4508 string values no longer conses excessively. (thanks to Nathan
4509 Froyd porting Raymond Toy's fix to CMU CL)
4510 * began to systematize and improve MOP conformance in PCL (thanks to
4511 Nathan Froyd, Gerd Moellman and Pierre Mai):
4512 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4514 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4515 ** FINALIZE-INHERITANCE is now called on class finalization;
4516 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4517 argument precedence order.
4518 * fixed bug 202: The compiler no longer fails on functions whose
4519 derived types contradict their declared type.
4520 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4521 so it can be non-toplevel.
4522 * The fasl file version number has changed (because of the new
4523 implementation of DEFMACRO).
4524 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4525 safe code, that any length requirement by their type-specifier
4526 argument is valid. The exceptions to this are described in bug
4528 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4529 functions now check the types of their inputs as required by ANSI.
4530 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4531 introduced symbol is DECLAREd to be SPECIAL.
4532 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4533 * fixed bug: :COUNT argument to sequence functions may be negative
4534 * fixed bug: body of DO-SYMBOLS may contain declarations
4535 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4536 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4537 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4538 symbol macro only once
4539 * fixed printing of call frame when argument list is unavailable
4540 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4541 * compiler no longer signals WARNING on unknown keyword
4544 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4545 * A beta-quality port to the mips architecture running Linux,
4546 based on the old CMUCL backend, has been made. It has been tested
4547 on a big-endian kernel, and works sufficiently well to be able to
4548 rebuild itself; it has not been tested in little-endian mode.
4549 * fixed an inconsistency between gencgc.c and purify.c which made
4550 dumping/loading .core files unreliable
4551 * fixed bug 120a: The compiler now deals correctly with IFs where
4552 the consequent is the same as the alternative, instead of
4553 misderiving the return type. (thanks to Alexey Dejneka)
4554 * fixed bug 113: Logical pathnames are now dumpable (the logical
4555 host is resolved at load-time, throwing an error if it is not
4557 * fixed bug 174: FORMAT's error message is slightly clearer when a
4558 non-printing character is used in a format directive.
4559 * fixed several bugs in compiler checking of type declarations, i.e.
4560 violations of the Python "declarations are assertions" principle
4561 (thanks to Alexey Dejneka)
4562 * fixed several bugs in PCL's error checking (thanks to Gerd
4564 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4566 * fixed bug in compilation of functions as first class values
4567 (thanks to Antonio Martinez-Shotton)
4568 * The compiler's handling TYPE-ERRORs which it can prove will
4569 inevitably happen at runtime has been cleaned up and corrected
4570 in several ways. (thanks to Alexey Dejneka)
4571 * improved argument type checking for various basic arithmetic
4572 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4573 lavished on them in the past that they can be compiled in many
4574 ways in different special cases
4575 * fixed bug 181: compiler checks validity of user supplied type
4577 * cleaned up code flushing in optimization: Function calls which
4578 should signal errors for safety purposes (e.g. which ANSI says
4579 should signal errors when their arguments are of incorrect type)
4580 are no longer optimized away.
4581 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4582 * incremented fasl file version number, because changes in the
4583 implementation of sequence functions like COERCE caused
4584 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4585 in old inline expansions) to become undefined. (Actually these
4586 changes were later undone, so we might very well be binary
4587 compatible with 0.7.7 after all, but leaving the version number
4588 incremented seemed like the simplest and most conservative
4591 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4592 * An alpha-quality port to the parisc architecture running Linux,
4593 based on the old CMUCL backend, has been made. This, even more so
4594 than the other backends, should be considered still a work in
4595 progress; known problems include that the Linux kernel in 64-bit
4596 mode does not propagate the correct sigcontext structure to
4597 userspace, and consequently SBCL on a parisc64 kernel will not
4599 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4600 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4601 suppressed.) Also now that the compiler is looking at declarations
4602 in the environment, it checks optimization declarations as well,
4603 and suppresses inlining when (> DEBUG SPEED).
4604 * More fixes have been made to treatment of floating point exception
4605 treatment and other Unix signals. In particular, floating point
4606 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4607 * The detection and handling of control stack exhaustion (infinite
4608 or very deeply nested recursion) has changed. Stack exhaustion
4609 detection is now done by write-protecting pages at the OS level
4610 and applies at all optimization settings; when found, a
4611 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4612 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4613 be caught using IGNORE-ERRORS.
4614 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4615 correctly when transforming recursive LABELS functions to LETs.
4616 (thanks to Alexey Dejneka)
4617 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4618 that are names of constants or global variables.
4619 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4620 alien routines with docstrings.
4621 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4622 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4624 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4625 (thanks to Eric Marsden)
4626 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4627 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4628 * Bug fix: The SPARC backend can now compile functions involving
4629 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4630 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4631 to a functions expecting a PATHNAME-DESIGNATOR.
4632 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4633 lambda lists. (thanks to Alexey Dejneka)
4634 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4635 functions so that EXPORTing the name of the class doesn't cause
4636 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4637 to Antonio Martinez for reporting this)
4638 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4639 constant-folded without failing an assertion. (thanks to Einar
4640 Floystad Dorum for reporting this)
4641 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4642 types are now dealt with more correctly by the compiler.
4643 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4644 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4645 behaviour analogous to RENAME-FILE. This puts its behaviour more
4646 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4648 * The fasl file version number has changed again. (because of the
4649 bug fix involving the names of PCL MAKE-INSTANCE functions)
4651 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4652 * bug fix: Floating point exceptions are treated much more
4653 consistently on the x86/Linux and PPC/Linux platforms.
4654 * Array initialization with :INITIAL-ELEMENT is now much faster for
4655 cases when the compiler cannot open code the array creation, but
4656 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4657 array accesses have also seen a speed increase.
4658 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4659 specified. (This was at the root of some bad interactions between
4660 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4662 * bug fix: Internal error arguments for undefined functions are now
4663 computed correctly on the PPC/Linux platform.
4664 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4665 Raymond Toy's patch for CMU CL)
4666 * Support for the Solaris 9 operating environment has been included
4667 (thanks to Daniel Merritt)
4668 * A very ugly but hopefully complete draft of the missing FFI chapter
4669 of the manual has been created by reformatting the corresponding
4670 CMU CL manual chapter into (currently very ugly and incoherent)
4671 DocBook and bringing it up to date for SBCL behavior. Thus, the
4672 manual is now essentially complete, at least by my extreme
4673 once-and-only-once standards, whereby it's acceptable to refer to
4674 the doc strings of SB-EXT functions as the primary documentation.
4675 * The fasl file version number has changed again, due to cleanup of
4676 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4677 is no longer a static symbol.)
4679 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4680 * SBCL now builds with OpenMCL (version 0.12) as the
4681 cross-compilation host; also, more progress has been made toward
4682 bootstrapping under CLISP.
4683 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4685 * bug 158 fixed: The compiler can now deal with integer loop
4686 increments different from 1; fixing this turned out also to fix
4688 * bug 169 fixed: no more bogus warnings about using lexical bindings
4689 despite the presence of perfectly good SPECIAL declarations (thanks
4690 to David Lichteblau)
4691 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4692 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4693 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4695 * bug 180 fixed: Method combination specifications no longer ignore
4696 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4697 * bug fix: Structure type predicate functions now check their argument
4698 count as they should.
4699 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4700 correctly. (thanks to Pierre Mai)
4701 * minor incompatible change: The --noprogrammer option is deprecated
4702 in favor of the new --disable-debugger option, which is very similar.
4703 (The major difference is that it takes effect at a slightly different
4704 time at startup, causing handling of errors in --sysinit and
4705 --userinit files will be affected differently.) The
4706 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4707 been added to allow this functionality to be controlled from ordinary
4708 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4709 maintainers, who might want to run non-interactive scripts to
4710 build SBCL cores which will later be used interactively.)
4711 * minor incompatible change: The LOAD function no longer, when given
4712 a wild pathname to load, loads all files matching that pathname.
4713 Instead, an error of type FILE-ERROR is signalled.
4715 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4716 * bug 147 fixed: The compiler preserves its block link/count
4717 invariants more correctly now so that it doesn't crash. (thanks
4719 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4721 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4722 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4723 no-value-for-this-character as NIL (as specified by ANSI).
4724 * HOST-NAMESTRING on physical pathnames now returns a string that is
4725 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4726 (thanks to Christophe Rhodes)
4727 * The Alpha port handles icache flushing more correctly. (thanks to
4729 * More progress has been made toward bootstrapping under CLISP. (thanks
4730 to Christophe Rhodes)
4731 * The fasl file format has changed again, because dynamic loading
4732 on OpenBSD (which has non-ELF object files) motivated some cleanups
4733 in the way that foreign symbols are transformed and passed around.
4734 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4735 is no longer treated as whitespace by the reader, but instead as
4736 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4737 |A
\7fB|, instead of A as it used to.
4739 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4740 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4741 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4742 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4743 this as of 0.7.1.45, but was left out of the previous news section
4744 (thanks to Dan Barlow)
4745 * SBCL now runs on the Solaris operating system on SPARC architectures
4746 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4747 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4748 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4749 * SPARC backend cleanups, allowing builds of cores optimized for V8
4750 and V9 SPARCS, and also emission of code targeted to a particular
4751 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4753 * SBCL is closer to bootstrapping under CLISP, thanks to various
4754 fixes by Christophe Rhodes.
4755 * The fasl file format has changed again, to allow the compiler's
4756 INFO database to support symbol macros.
4757 * The user manual (in doc/) is formatted into HTML more nicely.
4758 (thanks to coreythomas)
4759 * The system is smarter about SUBTYPEP relationships, especially
4760 those involving NOT types (including types such as ATOM which are
4761 represented internally using NOT types). Thus SUBTYPEP is less
4762 likely to return (VALUES NIL NIL) in general, and in particular
4763 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4765 * The fasl file format has changed again, because the internal
4766 representation of types now includes a new slot to support the new
4767 SUBTYPEP-of-NOT-types logic.
4768 * (not a change in the main branch of SBCL, but a related prototype
4769 which can hopefully be merged into the main branch of SBCL in the
4770 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4771 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4772 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4773 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4774 dispatch macro character combinations. (thanks to Alexey Dejneka)
4775 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4776 that superficially look like logical namestrings correctly.
4777 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4779 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4780 default supplied-p) for &optional and &key arguments. (thanks to
4783 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4784 * incompatible change: The compiler is now less aggressive about
4785 tail call optimization, doing it only when (> SPACE DEBUG) or
4786 (> SPEED DEBUG). (This is an incompatible change because there are
4787 programs which relied on the old CMU-CL-style behavior to optimize
4788 away their unbounded recursion which will now die of stack overflow.)
4789 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4790 for non-GENCGC systems has been increased to 20M (since that
4791 seems much closer to the likely performance optimum for modern
4792 systems than the old 4M value was)
4793 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4794 and *DEBUG-PRINT-LEVEL*
4795 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4796 of CMU CL's support for SPARC, and various endianness and other
4797 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4798 * new syntactic sugar for the Unix command line: --load foo.bar is now
4799 an alternate notation for --eval '(load "foo.bar")'.
4801 ** The system now detects stack overflow and handles it gracefully,
4802 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4803 optimization settings. (This is a good thing in general, and
4804 its introduction in this version should be particularly timely
4805 for anyone whose code fails because of suppression of tail
4807 ** The system now hunts for the C variable "environ" in a more
4808 devious way, to avoid segfaults when the C library version differs
4809 between compile time and run time. (thanks to Christophe Rhodes)
4810 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4811 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4812 ** The compiler no longer issues bogus style warnings for undefined
4813 classes in the same source file as the DEFCLASSes which defined
4814 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4816 ** fixes in CONDITION class precedence list for undefined function
4817 errors (thanks to Alexei Dejneka)
4818 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4819 correctly. (thanks to Dan Barlow)
4820 ** portability fixes aiming at bootstrapping under CLISP (thanks
4821 to Dave McDonald and Christophe Rhodes)
4822 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4823 ** fixes in type translation and and type inference (thanks to
4825 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4826 ** various fixes in the new ports (thanks to Dan Barlow)
4827 * several changes related to debugging:
4828 ** suppression of tail recursion, as noted above
4829 ** stack overflow detection, as noted above
4830 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4831 is now the default. (For some time encapsulation has been more
4832 reliable than the breakpoint-based :ENCAPSULATE NIL
4833 implementation, at least on X86 systems; and I just noticed that
4834 encapsulation also seems closer to the spirit of the ANSI
4837 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4839 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4840 up properly again. (There was a packaging bug in 0.7.0 which
4841 left their definitions in SB-SYS::LOAD-FOREIGN and
4842 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4843 vital for most things which interface to C-level interfaces,
4844 like extensions working with sockets or databases or
4845 Perl-compatible regexes or whatever, and the need to fix
4846 this bug is the main reason that 0.7.1 was released so
4848 ** DEFGENERIC is now choosier about the methods it redefines, so that
4849 reLOADing a previously-LOADed file containing DEFGENERICs does
4850 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4851 cycle now works as it should. (thanks to Alexey Dejneka)
4852 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4853 fixed by Christophe Rhodes. (He actually submitted this patch
4854 months ago, and I delayed until after 0.7.0.)
4855 ** Bug 111 (internal compiler confusion about runtime checks on
4856 FUNCTION types) was fixed by Alexey Dejneka.
4857 * Some internal cleanups (getting rid of variables which aren't
4858 needed now that the byte interpreter is gone) caused the fasl
4859 file format number to change again.
4861 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4862 * major incompatible change: The default fasl file extension, i.e. the
4863 default extension for files produced by COMPILE-FILE, has changed
4864 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4866 ** There are many changes in the implementation of the compiler.
4867 SBCL is now essentially a compiler-only implementation of ANSI
4868 Common Lisp. EVAL still "interprets" a few special cases, but
4869 almost all the interesting cases are handled by creating
4870 a LAMBDA expression, calling COMPILE on it, then calling
4871 FUNCALL on the result.
4872 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4873 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4874 Since the code is newer, there might still be some new bugs
4875 (though not as many as before Martin Atzmueller's fixes:-). But
4876 the new code is substantially simpler and clearer, and hopefully
4877 any remaining bugs will be simpler, less fundamental, and more
4878 fixable then the bugs in the old code.
4879 ** The revised compiler is still a little unsteady on its feet.
4881 *** The debugging information it produces (particularly the names
4882 of FUNCTION objects) is sometimes much less useful than what
4883 the old compiler produced.
4884 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4885 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4886 within a MACROLET) has been temporarily weakened.
4887 ** There are new compiler optimizations for various functions:
4888 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4889 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4890 *** the math functions TRUNCATE, FLOOR, and CEILING
4891 *** the function-of-all-trades COERCE
4892 Mostly these should be transparent, but there's one
4893 potentially-annoying problem (bug 117): when the compiler
4894 inline-expands a function and does type analysis on the result,
4895 it can create control paths which have type mismatches, and
4896 when it can't prove that those control paths aren't taken,
4897 it will issue WARNINGs about the type mismatches. This is
4898 a particular problem in practice for the new sequence functions.
4899 It's not clear how this should be fixed, and for now, a
4900 workaround is given in the entry for 117 in the BUGS file.
4901 ** (Because of the interaction between the two previous items --
4902 occasional inlining problems and new inline expansions -- some
4903 of the new sequence function optimizations won't really kick in
4904 completely until debugging information, and then inlining, are
4905 straightened out in some future version.)
4906 * minor incompatible changes:
4907 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4908 DIRECTORY no longer implicitly promotes NIL slots of its
4909 pathname argument to :WILD. In particular, when you ask for the
4910 contents of a directory (which you used to be able to do without
4911 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4912 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4913 ** changes in behavior that ANSI explicitly defines to be
4914 implementation dependent:
4915 *** The new compiler-only implementation still conforms with ANSI,
4916 but acts a little different than before. Besides the obvious
4917 changes in performance tradeoffs (that the cost per form passed
4918 to EVAL has gone up, and the cost per form executed by EVAL
4919 has gone down), the behavior of the system changes a little
4920 because there are no longer any interpreted function objects.
4921 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4922 e.g. doing COMPILE on the output of interactive DEFUN is
4924 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4926 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4927 has changed from (:CL) to NIL.
4928 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4929 e.g. #\Newline and #\Tab, don't have names specified in the
4930 ANSI Common Lisp standard, is now based on their ASCII symbolic
4931 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4932 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4933 are no longer used for output.
4934 ** changes in internal implementation constants:
4935 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4936 4 million. (If your application spends a lot of time GCing and
4937 you have a lot of RAM, you might want to experiment with
4938 increasing it even more.)
4939 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4940 However, almost all old code should still continue to work without
4941 immediate update, as SB-C-CALL is now a (deprecated) nickname
4943 ** Old operator names in the style DEF-FOO are now deprecated in
4944 favor of new corresponding names DEFINE-FOO, for consistency with
4945 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4946 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4947 internal symbols, but a few supported extensions like
4948 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4949 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4950 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4951 etc. as you get deeper into recursive calls to the debugger
4952 command loop, instead of the old "5]", "5]]", "5]]]"
4953 sequence. (I was motivated to do this when squabbles between
4954 ILISP and SBCL left me very deeply nested in the debugger. In the
4955 short term, this change will probably provoke more ILISP/SBCL
4956 squabbles, but hopefully it will be an improvement in the long run.)
4957 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4958 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4959 function, since declaiming return types involving aliens is
4960 (1) annoyingly messy to do by hand and (2) vital to efficient
4961 compilation of code which calls such functions.
4962 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4963 longer reexported by the SB-EXT package. They're solely useful
4964 for alien code, so it seems more logical that you should get
4965 them from the SB-ALIEN package, not in SB-EXT.
4966 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4967 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4968 features. Instead, the code that they used to control is always
4969 built into the system.
4970 * many other bug fixes
4971 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4972 advantage of the new EVAL-WHEN stuff and to clean them up in
4973 general, and they are now more ANSI-compliant in a number of
4974 ways. Martin Atzmueller is responsible for a lot of this.
4975 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4977 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4978 *** correct ERROR type for various file operations
4979 *** some fixes for Lisp streams
4980 *** DEFMETHOD syntax checking
4981 *** changing old weird representation of debug information as
4982 strings (which, among their other deficiencies, don't transform
4983 correctly when you rename packages, and don't change their
4984 print representation when you change things like *PACKAGE*
4985 and *PRINT-LENGTH*) to symbols and lists of symbols
4986 He also made several improvements and fixed several bugs in DESCRIBE.
4987 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4989 *** misbehavior of WRITE-STRING/WRITE-LINE
4990 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4991 and several other LOOP problems as well
4992 *** DIRECTORY when similar filenames are present
4993 *** DEFGENERIC with :METHOD options
4994 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4995 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4996 *** argument ordering in FIND with :TEST option
4997 *** mishandled package designator argument in APROPOS-LIST
4998 *** various problems in the backquote readmacro
4999 *** a bug in APROPOS
5000 *** probably some others that I'm not describing very well here,
5001 since the CVS log documents them by reference to sbcl-devel
5002 messages, and the SourceForge archives aren't working well.:-(
5003 ** Dan Barlow improved the Alpha port (and is making progress on the
5004 PPC port, for those of you who think different).
5005 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5006 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5007 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5008 continues to work on the SPARC port (for those of you in a position
5009 to look down upon our little PC-compatible boxes from a great height).
5010 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5011 and uses that copy, rather than the current dynamic value, when
5012 it's trying to decide whether to truncate output. Thus e.g.
5013 (let ((*print-lines* 50))
5014 (pprint-logical-block (stream nil)
5016 (let ((*print-lines* 8))
5017 (print (aref possiblybigthings i) stream)))))
5018 should now truncate the logical block only at 50 lines, instead of
5019 often truncating it at 8 lines, as it did before.
5020 * The doc/cmucl/ directory, containing old CMU CL documentation
5021 from the time of the fork, is no longer part of the base system.
5022 SourceForge has shut down its anonymous FTP service, and with it
5023 my original plan for distributing the old CMU CL documentation
5024 there. For now, if you need these files you can download an old
5025 SBCL source release and extract them from it.
5026 * The fasl file version number changed again, for dozens of reasons,
5027 some of which are apparent above.
5029 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5030 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5031 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5032 patch, so that DISASSEMBLE output is much nicer.
5033 * The code in the SB-PROFILE package now seems reasonably stable.
5034 I still haven't decided what the final interface should look like
5035 (I'd like PROFILE to interact cleanly with TRACE, since both
5036 facilities use function encapsulation) but if you have a need
5037 for profiling now, you can probably use it successfully with
5038 the current CMU-CL-style interface.
5039 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5040 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5041 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5042 link now returns the dangling link itself, and for similar
5043 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5044 link itself. (In these cases the old code signalled an error and
5045 looped endlessly, respectively.) Thus, DIRECTORY now works even
5046 in the presence of dangling and cyclic symbolic links.
5047 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5048 is now a supported extension again, since the consensus on
5049 sbcl-devel was that it can be useful for ordinary development
5050 work, not just for debugging SBCL itself.
5051 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5052 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5053 that currently-defined functions might be redefined later with
5054 different return types.
5055 * Hash tables can be printed readably, as inspired by CMU CL code
5056 of Eric Marsden and SBCL code of Martin Atzmueller.
5057 * better error handling in CLOS method combination, thanks to
5058 Martin Atzmueller porting Pierre Mai's CMU CL patches
5059 * more overflow fixes for >16Mbyte I/O buffers
5060 * A bug in READ has been fixed, so that now a single Ctrl-D
5061 character suffices to cause end-of-file on character streams.
5062 In particular, now you only need one Ctrl-D at the command
5063 line (not two) to exit SBCL.
5064 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5066 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5067 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5068 does the right thing.
5069 * The implementation of some type tests, especially for CONDITION
5070 types, is now tidier and maybe faster, due to CMU CL code
5071 originally by Douglas Crosher, ported by Martin Atzmueller.
5072 * Some math functions have been fixed, and there are new
5073 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5074 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5075 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5076 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5077 likely to be built into sbcl-0.7.0.)
5078 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5079 CL, ported to SBCL by Martin Atzmueller)
5080 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5081 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5082 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5083 * There's a new slam.sh hack to shorten the edit/compile/debug
5084 cycle for low-level changes to SBCL itself, and a new
5085 :SB-AFTER-XC-CORE target feature to control the generation of
5086 the after-xc.core file needed by slam.sh.
5087 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5088 COMPILE-FILE is no longer supported, so that now every function
5089 gets an entry point, so that block compilation looks a little
5090 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5091 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5092 returns the number of bytes consed since the system started,
5093 rather than the number consed since the first time the function
5094 was called. (The new definition parallels ANSI functions like
5095 CL:GET-INTERNAL-RUN-TIME.)
5096 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5097 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5098 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5099 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5100 * Fasl file version numbers are now independent of the target CPU,
5101 since historically most system changes which required version
5102 number changes have affected all CPUs equally. Similarly,
5103 the byte fasl file version is now equal to the ordinary
5106 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5107 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5108 is no longer recognized. I apologize for this, because it was
5109 listed in SB-EXT as a supported extension, but I found that
5110 its existing behavior was poorly specified, as well as incorrectly
5111 specified, and it looked like too much of a mess to straighten it
5112 out. I have enough on my hands trying to get ANSI stuff to work..
5113 * many patches ported from CMU CL by Martin Atzmueller, with
5114 half a dozen bug fixes in pretty-printing and the debugger, and
5115 half a dozen others elsewhere
5116 * fixed bug 13: Floating point infinities are now supported again.
5117 They might still be a little bit flaky, but thanks to bug reports
5118 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5119 as flaky as they were.
5120 * The --noprogrammer command line option is now supported. (Its
5121 behavior is slightly different in detail from what the old man
5122 page claimed it would do, but it's still appropriate under the
5123 same circumstances that the man page talks about.)
5124 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5125 are now supported, and enabled by default. Thus, the compiler can
5126 handle many floating point and complex operations much less
5127 inefficiently. (Thus e.g. you can implement a complex FFT
5129 * The compiler now detects type mismatches between DECLAIM FTYPE
5130 and DEFUN better, and implements CHECK-TYPE more correctly, and
5131 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5132 thanks to patches from Martin Atzmueller.
5133 * various fixes to make the cross-compiler more portable to
5134 ANSI-conforming-but-different cross-compilation hosts (notably
5135 Lispworks for Windows, following bug reports from Arthur Lemmens)
5136 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5137 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5138 fixed thanks to Pierre Mai's CMU CL patches.
5139 * fixes to keep the system from overflowing internal counters when
5140 it tries to use i/o buffers larger than 16M bytes
5141 * fixed bug 45a: Various internal functions required to support
5142 complex special functions have been merged from CMU CL sources.
5143 (When I was first setting up SBCL, I misunderstood a compile-time
5144 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5145 * improved support for type intersection and union, fixing bug 12
5146 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5147 more obscure bugs as well
5148 * some steps toward byte-compiling non-performance-critical
5149 parts of the system, courtesy of patches from Martin Atzmueller
5150 * Christophe Rhodes has made some debian packages of sbcl at
5151 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5152 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5153 stable, but are nonetheless usable. When he's ready, I'd be happy
5154 to add them to the SourceForge "File Releases" section. (And if
5155 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5156 * new fasl file format version number (because of changes in
5157 internal representation of (OR ..) types to accommodate the new
5158 support for (AND ..) types, among other things)
5160 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5161 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5163 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5165 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5166 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5167 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5168 * DESCRIBE now works on structure objects again.
5169 * Most function call argument type mismatches are now handled as
5170 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5171 know whether the function will be redefined before the call is
5172 executed. (The compiler could flag local calls with full WARNINGs,
5173 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5174 it doesn't keep track of enough information to know whether calls
5175 are local in this sense.)
5176 * Compiler output is now more verbose, with messages truncated
5177 later than before. (There should be some supported way for users
5178 to override the default verbosity, but I haven't decided how to
5179 provide it yet, so this behavior is still controlled by the internal
5180 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5181 src/compiler/ir1util.lisp.)
5182 * Fasl file format version numbers have increased again, because
5183 support for the Gray streams extension changes the layout of the
5184 system's STREAM objects.
5185 * The Gray subclassable streams extension now works, thanks to a
5186 patch from Martin Atzmueller.
5187 * The full LOAD-FOREIGN extension (not just the primitive
5188 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5189 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5190 but like most other programs, it defaults to copying the Unix
5191 environment from the original process instead of starting the
5192 new process in an empty environment.
5193 * Extensions which manipulate the Unix environment now support
5194 an :ENVIRONMENT keyword option which doesn't smash case or
5195 do other bad things. The CMU-CL-style :ENV option is retained
5196 for porting convenience.
5197 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5198 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5200 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5202 * A patch from Martin Atzmueller seems to have solved the SIGINT
5203 problem, and as far as we know, signal-handling now works cleanly.
5204 (If you find any new bugs, please report them!)
5205 * The system no longer defaults Lisp source file names to types
5206 ".l", ".cl", or ".lsp", but only to ".lisp".
5207 * The compiler no longer uses special default file extensions for
5208 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5209 seems to expect a single default extension for all compiled code,
5210 and there's no compelling reason to try to stretch the standard
5211 to allow two different extensions.) Instead, byte-compiled files
5212 default to the same extension as native-compiled files.
5213 * Fasl file format version numbers have increased again, because
5214 a rearrangement of internal implementation packages made some
5215 dumped symbols in old fasl files unreadable in new cores.
5216 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5217 many fewer weird special cases.
5218 * Bug #17 (differing COMPILE-FILE behavior between logical and
5219 physical pathnames) has been fixed, and some related misbehavior too,
5220 thanks to a patch from Martin Atzmueller.
5221 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5222 by Tim Moore, ported to SBCL by Martin Atzmueller.
5223 * Martin Atzmueller fixed several filesystem-related problems,
5224 including bug #36, in part by porting CMU CL patches, which were
5225 written in part by Paul Werkowski.
5226 * More compiler warnings in src/runtime/ are gone, thanks to
5227 more patches from Martin Atzmueller.
5228 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5231 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5233 * DESCRIBE now works on CONDITION objects.
5234 * The debugger now handles errors which arise when trying to print
5235 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5237 * The build system now uses an additional file, customize-target-features.lisp,
5238 to allow local modifications to the target *FEATURES* list. (The point of
5239 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5240 debugging features enabled, without having to worry about propagating it
5241 into everyone's system when I do a "cvs update".) When no
5242 customize-target-features.lisp file exists, the target *FEATURES* list
5243 should be constructed the same way as before.
5244 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5245 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5246 warn about behavior which is undefined under the ANSI spec. Note: This
5247 is specified by ANSI, but it's not very popular with programmers.
5248 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5249 macro in the SBCL sources for an example of a workaround which you
5250 might use to make portable ANSI-standard code which does what you want.
5251 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5252 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5253 when it's used as a non-toplevel form. (This is required in order
5254 to implement the DEFCONSTANT-EQX macro.)
5255 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5256 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5257 funny things, due to bugs in the implementation of EVAL-WHEN
5258 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5259 non-toplevel DEFCONSTANTs are uncommon.)
5260 * The core file version number and fasl file version number have been
5261 incremented, because the old noncompliant DEFCONSTANT behavior involved
5262 calling functions which no longer exist, and because I also took the
5263 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5264 * fixed bug 1 (error handling before read-eval-print loop starts), and
5265 redid debugger restarts and related debugger commands somewhat while
5267 ** The QUIT debugger command is gone, since it did something
5268 rather different than the SB-EXT:QUIT command, and since it never
5269 worked properly outside the main toplevel read/eval/print loop.
5270 Invoking the new TOPLEVEL restart provides the same functionality.
5271 ** The GO debugger command is also gone, since you can just invoke
5272 the CONTINUE restart directly instead.
5273 ** The TOP debugger command is also gone, since it's redundant with the
5274 FRAME 0 command, and since it interfered with abbreviations for the
5276 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5278 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5279 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5280 some porting work by Martin Atzmueller)
5281 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5282 with a boatload of patches which he ported to SBCL. Now that those
5284 ** The system tries to make sure that its low-priority messages
5285 are prefixed by semicolons, to help people who like to use
5286 syntax highlighting in their ILISP buffer. (This patch
5287 was originally due to Raymond Toy.)
5288 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5289 patches originally written by Raymond Toy.
5290 ** The compiler understands coercion between single-value and
5291 multiple-VALUES type expressions better, getting rid of some very
5292 weird behavior, thanks to patches originally by Robert MacLachlan
5293 and Douglas Crosher.
5294 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5295 lambda lists, thanks to a patch originally by Pierre Mai.
5296 ** The system no longer bogusly warns about "abbreviated type
5298 ** The compiler gets less confused by inlining and RETURN-FROM,
5299 thanks to some patches originally by Tim Moore.
5300 ** The system no longer hangs when dumping circular lists to fasl
5301 files, thanks to a patch originally from Douglas Crosher.
5302 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5303 undefined function error.
5304 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5305 in structure slot initforms) for now, documented workaround instead:-|
5306 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5307 * fixed bug 5: added stubs for various Gray stream functions called
5308 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5309 installed, at least appropriate type errors are generated
5310 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5311 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5312 consistently in DEFMETHOD forms.
5313 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5314 it doesn't seem to affect SBCL after all
5315 * The C runtime system now builds with better optimization and many
5316 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5318 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5320 * The system is now under CVS at SourceForge (instead of the
5321 CVS repository on my home machine).
5322 * The new signal handling code has been tweaked to treat register
5323 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5324 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5325 downstream, e.g. in debug-int.lisp, has implicit dependencies
5326 on the unsignedness of integer representation of machine words,
5327 and that caused the system to bomb out with infinite regress
5328 when trying to recover from type errors involving signed values,
5329 e.g. (BUTLAST '(1 2 3) -1).)
5330 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5331 (This was one of the bugs Peter Van Eynde reported back in July.)
5332 * The system now uses code inspired by Colin Walters' O(N)
5333 implementation of MAP (from the cmucl-imp@cons.org mailing
5334 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5335 inline the MAP operation, and there is more than one
5336 sequence argument to the MAP call (so that it can't just
5337 do ETYPECASE once and for all based on the type of the
5338 single sequence argument). (The old non-inline implementation
5339 of the general M-argument sequence-of-length-N case required
5340 O(M*N*N) time when any of the sequence arguments were LISTs.)
5341 * The QUIT :UNIX-CODE keyword argument has been renamed to
5342 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5343 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5345 * Raymond Wiker's patches to port dynamic loading from Linux to
5346 FreeBSD have been added.
5347 * The BUGS file is now more nearly up to date, thanks in large part
5348 to Martin Atzmueller's review of it.
5349 * The debugger now flushes standard output streams before it begins
5350 its output ("debugger invoked" and so forth).
5351 * The core version number and fasl file version number have both
5352 been incremented, because of incompatible changes in the layout
5354 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5355 used to not be called for a saved Lisp image.)
5356 * Martin Atzmueller's version of a patch to fix a compiler crash,
5357 as posted on sbcl-devel 13 September 2000, has been installed.
5358 * Instead of installing Martin Atzmueller's patch for the
5359 compiler transform for SUBSEQ, I deleted the compiler transform,
5360 and transforms for some similar consing operations.
5361 * A bug in signal handling which kept TRACE from working on OpenBSD
5363 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5364 away by constant folding
5365 * The system now defines its address space constants in one place
5366 (in the Lisp sources), and propagates them automatically elsewhere
5367 (through GENESIS and the sbcl.h file). Therefore, patching the
5368 address map is less unnecessarily tedious and error-prone. The
5369 Lisp names of address space constants have also been systematized.
5370 * CVS tags like dollar-Header-dollar have been removed from
5371 the sources, because they have never saved me trouble and
5372 they've been source of trouble working with patches and other
5373 diff-related operations.
5374 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5375 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5377 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5379 * The system has been ported to OpenBSD.
5380 * The system now compiles with a simple "sh make.sh" on the systems
5381 that it's supported on. I.e., now you no longer need to tweak
5382 text in the target-features.lisp-expr and symlinks in src/runtime/
5383 by hand, the make.sh takes care of it for you.
5384 * The system is no longer so grossly inefficient when compiling code
5385 involving vectors implemented as general (not simple) vectors (VECTOR T),
5386 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5387 which dares to use the various sequence functions on non-simple
5388 vectors, takes less of a performance hit.
5389 * There is now a primitive type predicate VECTOR-T-P
5390 to test for the (VECTOR T) type, so that e.g.
5391 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5392 can now be compiled with some semblance of efficiency. (The old code
5393 turned the type declaration into a full call to %TYPEP at runtime!)
5394 * AREF on (VECTOR T) is still not fast, since it's still compiled
5395 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5396 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5397 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5398 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5399 without making full calls to SUBTYPEP at runtime.
5400 (Some analogous efficiency issues for non-simple vectors specialized to
5401 element types other than T, or for non-simple multidimensional arrays,
5402 have not been addressed. They could almost certainly be handled the
5403 same way if anyone is motivated to do so.)
5404 * The changes in array handling break binary compatibility, so
5405 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5406 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5407 instead of (VALUES T T).
5408 * By following the instructions that Dan Barlow posted to sbcl-devel
5409 on 2 July 2000, I was able to enable primitive dynamic object
5410 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5411 functionality is not implemented (since it calls ld to resolve
5412 library references automatically, requiring RUN-PROGRAM for its
5413 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5414 try to resolve library references) is now supported.
5415 * The system now flushes the standard output streams when it terminates,
5416 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5417 them at several other probably-convenient times, e.g. in each pass of
5418 the toplevel read-eval-print loop, and after evaluating a form given
5419 as an "--eval" command-line option. (These changes were motivated by a
5420 discussion of stream flushing issues on cmucl-imp in August 2000.)
5421 * The source transform for TYPEP of array types no longer assumes
5422 that an array whose element type is a not-yet-defined type
5423 is implemented as an array of T, but instead punts, so that the
5424 type will be interpreted at runtime.
5425 * There is now some support for cross-compiling in make.sh: each of
5426 the phases of make.sh has its own script. (This should be transparent
5427 to people doing ordinary, non-cross-compile builds.)
5428 * Since my laptop doesn't have hundreds of megabytes of memory like
5429 my desktop machine, I became more motivated to do some items on
5430 my to-do list in order to reduce the size of the system a little:
5431 ** Arrange for various needed-only-at-cold-init things to be
5432 uninterned after cold init. To support this, those things have
5433 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5434 symbols with such names are now uninterned after cold init).
5435 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5436 fasl files for cold load.
5437 ** Remove the old compiler structure pooling code (which used to
5438 be conditional on the target feature :SB-ALLOC) completely.
5439 ** Redo the representation of some data in cold init to be more compact.
5440 (I also looked into supporting byte compiled code at bootstrap time,
5441 which would probably reduce the size of the system a lot, but that
5442 looked too complicated, so I punted for now.)
5443 * The maximum signal nesting depth in the src/runtime/ support code has
5444 been reduced from 4096 to 256. (I don't know any reason for the very
5445 large old value. If the new smaller value turns out to break something,
5446 I'll probably just bump it back up.)
5447 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5449 * Many, many bugs reported by Peter Van Eynde have been added to
5450 the BUGS list; some have even been fixed.
5451 * While enabling dynamic object file loading, I tried to make the
5452 code easier to understand, renaming various functions and variables
5453 with less ambiguous names, and changing some function calling
5454 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5455 * While trying to figure out how to do the OpenBSD port, I tried to
5456 clean up some of the code in src/runtime/. In particular, I dropped
5457 support for non-POSIX signal handling, added various comments,
5458 tweaked the code to reduce the number of compilation warnings, and
5459 renamed some files to increase consistency.
5460 * To support the new automatic configuration functionality in make.sh,
5461 the source file target-features.lisp-expr has been replaced with the
5462 source file base-target-features.lisp-expr and the machine-generated
5463 file local-target-features.lisp-expr.
5464 * fixed a stupid quoting error in make.sh so that using CMU CL
5465 "lisp -batch" as cross-compilation host works again
5467 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5469 * DESCRIBE no longer tries to call itself recursively to describe
5470 bound/fbound values, so that it no longer fails on symbols which are
5471 bound to themselves (like keywords, T, and NIL).
5472 * DESCRIBE now works on generic functions.
5473 * The printer now prints less-screwed-up representations of closures
5474 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5475 * A private symbol is used instead of the :EMPTY keyword previously
5476 used to mark empty slots in hash tables. Thus
5477 (DEFVAR *HT* (MAKE-HASH-TABLE))
5478 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5479 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5480 now does what ANSI says that it should. (You can still get
5481 similar noncompliant behavior if bang on the hash table
5482 implementation with all the symbols you get back from
5483 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5484 This breaks binary compatibility, since tests for equality to
5485 :EMPTY are wired into things like the macroexpansion of
5486 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5488 * There's now a minimal placeholder implementation for CL:STEP,
5489 as required by ANSI.
5490 * An obscure bug in the interaction of the normal compiler, the byte
5491 compiler, inlining, and structure predicates has been patched
5492 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5493 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5495 * Missing ordinary arguments in a macro call are now detected even
5496 when the macro lambda list contains &KEY or &REST.
5497 * The debugger no longer complains about encountering the top of the
5498 stack when you type "FRAME 0" to explicitly instruct it to go to
5499 the top of the stack. And it now prints the frame you request even
5500 if it's the current frame (instead of saying "You are here.").
5501 * As specified by ANSI, the system now always prints keywords
5502 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5504 * The default initial SIZE of HASH-TABLEs is now smaller.
5505 * Type information from CLOS class dispatch is now propagated
5506 into DEFMETHOD bodies, so that e.g.
5507 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5509 is now basically equivalent to
5510 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5511 (DECLARE (TYPE SINGLE-FLOAT X))
5513 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5514 operation, without having to do run-time type dispatch.
5515 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5516 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5517 * Since I don't seem to be making big file reorganizations very often
5518 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5519 is overflowing my ability to conveniently back them up), I've finally
5520 checked the system into CVS. (The CVS repository is on my home system,
5521 not at SourceForge -- putting it on SourceForge might come later.)
5522 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5523 high-level GC-NOTIFY-FOO functions send their output. (There's
5524 still very little control of where low-level verbose GC functions
5525 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5526 less than it used to -- the GC-NOTIFY-FOO functions are now under
5527 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5528 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5529 in only one place in the source code, and propagates it automatically
5530 everywhere that it's needed. Thus e.g. when I bump the version from
5531 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5532 * The C source files now include boilerplate legalese and documentation
5533 at the head of each file (just as the Lisp source files already did).
5534 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5535 to his page will be replaced with a link to his new CLiki service.
5537 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5539 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5540 * The build process now looks for GNU make under the default name "gmake",
5541 instead of "make" as it used to. If GNU make is not available as "gmake"
5542 on your system, you can change this default behavior by setting the
5543 GNUMAKE environment variable.
5544 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5545 can build without error under CMU CL.
5547 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5549 * There is now a partial SBCL user manual (with some new text and some
5550 text cribbed from the CMU CL manual).
5551 * The beginnings of a profiler have been added (starting with the
5552 CMU CL profiler and simplifying and cleaning up). Eventually the
5553 main interface should be through the TRACE macro, but for now,
5554 it's still accessed through vaguely CMU-CL-style functions and macros
5555 exported from the package SB-PROFILE.
5556 * Some problems left over from porting CMU CL to the new
5557 cross-compilation bootstrap process have been cleaned up:
5558 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5559 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5560 part when getting rid of the compiler *BACKEND* stuff.)
5561 ** The value of *NULL-TYPE* was screwed up, because it was
5562 being initialized before the type system knew the final
5563 definition of the 'NULL type. This screwed up several key
5564 optimizations in the compiler, causing inefficiency in all sorts
5565 of places. (I found it because I wanted to understand why
5566 GET-INTERNAL-RUN-TIME was consing.)
5567 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5568 PROCLAIM FTYPE information. Unfortunately this broke binary
5569 compatibility again, since now the forms output by DEFGENERIC
5570 to refer to functions which didn't exist in 0.6.3.
5571 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5572 can use the new (as of 0.6.3) transform for SOME into MAP into
5574 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5575 values to (INTEGER 0 1000000), so that the time code will no longer
5576 occasionally get blown up by Linux returning 1000000 microseconds
5577 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5578 its output conform to the ANSI spec. (Alas, this makes its output
5579 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5580 * A full call to MAP NIL with a single sequence argument no longer conses.
5581 * fixes to problems pointed out by Martin Atzmueller:
5582 * The manual page no longer talks about multiprocessing as though
5583 it were currently supported.
5584 * The ILISP support patches have been removed from the distribution,
5585 because as of version 5.10.1, ILISP now supports SBCL without us
5586 having to maintain patches.
5587 * added a modified version of Raymond Toy's recent CMU CL patch for
5588 EQUALP comparison of HASH-TABLE
5590 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5592 * The system still can't cross-compile itself with
5593 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5594 entails), but at least it can compile more of itself that way
5595 than it used to be able to, and various buglets which were uncovered
5596 by trying to cross-compile itself that way have now been fixed.
5597 * This release breaks binary compatibility again. This time
5598 at least I've incremented the FASL file format version to 2, so that the
5599 problem can be detected reliably instead of just causing weird errors.
5600 * various new style warnings:
5601 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5602 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5603 ** using the lexical binding of a variable named in the *FOO* style
5604 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5605 as specified by ANSI.
5606 * *RANDOM-STATE* is no longer automatically initialized from
5607 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5608 default behavior of the system is to repeat its behavior every time
5609 it's run. If you'd like to change this behavior, you can always
5610 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5611 old convention there was no comparably easy way to get the system to
5612 repeat its behavior every time it was run.
5613 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5614 FTYPE declarations has been removed, in favor of their ANSI
5615 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5616 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5617 the types of their sequence arguments can be determined at compile time.
5618 This is done through a new open code expansion for MAP which eliminates
5619 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5620 argument types can be determined at compile time.
5621 * The optimizer now transforms COERCE into an identity operation when it
5622 can prove that the coerced object is already of the correct type. (This
5623 can be a win for machine generated code, including the output of other
5624 optimization transforms, such as the MAP transform above.)
5625 * Credit information has been moved from source file headers into CREDITS.
5626 * Source file headers have been made more standard.
5627 * The CASE macro now compiles without complaining even when it has
5630 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5632 * (Note that the way that the PCL macroexpansions were rewritten
5633 to accommodate the change in DEFGENERIC below breaks binary
5634 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5635 not run under sbcl-0.6.2. Once we get out of alpha releases,
5636 i.e. hit release 1.0.0, we'll probably try to maintain binary
5637 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5638 and sbcl-1.4.4. Until then, however, it might be fairly common
5639 for maintenance releases to break binary compatibility.)
5640 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5642 * The reporting of unhandled signals has been changed to print some
5643 explanatory text as well as the report form. (Previously only
5644 the report form was printed.)
5645 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5646 it defines, so that the compiler no longer issues undefined function
5647 warnings for compiled-but-not-yet-loaded generic functions.
5648 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5649 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5650 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5651 section of the ANSI spec are supported.
5652 * The "" nickname for the "KEYWORD" package has been removed.
5653 The reader still handles symbol tokens which begin with a package marker
5654 as keywords, but it doesn't expose its mechanism for doing so in the
5655 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5656 * The system now issues STYLE-WARNINGs for contradictory TYPE
5657 proclamations. (Warnings for contradictory FTYPE proclamations would
5658 be nice too, but those can't be done usefully unless the type system
5659 is made smarter about FUNCTION types.)
5660 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5661 systematized, so that "*target-*.lisp is supposed to exist only on the
5662 target and imply that there's a related file which exists on the
5663 host, and *host-*.lisp is supposed to exist only on the host and imply
5664 that there's a related file which exists on the target. This involves a
5665 lot of renaming. Hopefully the acute confusion caused by the renaming
5666 will be justified by the reduction in chronic confusion..
5667 ** runtime-type.lisp -> early-target-type.lisp
5668 ** target-type.lisp -> late-target-type.lisp
5669 ** early-host-format.lisp -> early-format.lisp
5670 ** late-host-format.lisp -> late-format.lisp
5671 ** host-error.lisp -> misc-error.lisp
5672 ** early-error.lisp -> early-target-error.lisp
5673 ** late-error.lisp -> late-target-error.lisp
5674 ** host-defboot.lisp -> early-defboot.lisp
5675 ** code/misc.lisp -> code/target-misc.lisp
5676 ** code/host-misc.lisp -> code/misc.lisp
5677 ** code/numbers.lisp -> code/target-numbers.lisp
5678 ** code/early-numbers.lisp -> numbers.lisp
5679 ** early-host-type.lisp -> early-type.lisp
5680 ** late-host-type.lisp -> late-type.lisp
5681 ** host-typep.lisp -> typep.lisp
5682 ** load.lisp -> target-load.lisp
5683 ** host-load.lisp -> load.lisp
5684 ** host-disassem.lisp -> disassem.lisp
5685 ** host-insts.lisp -> insts.lisp
5686 ** byte-comp.lisp -> target-byte-comp.lisp
5687 ** host-byte-comp.lisp -> byte-comp.lisp
5688 ** host-signal.lisp -> signal.lisp
5689 ** host-defstruct.lisp -> defstruct.lisp
5690 ** late-target-type.lisp -> deftypes-for-target.lisp
5691 Furthermore, several other previously target-only files foo.lisp (e.g.
5692 hash-table.lisp and random.lisp) have been split into a target-and-host
5693 foo.lisp file and a target-only target-foo.lisp file, with their key type
5694 definitions in the target-and-host part, so that the cross-compiler will
5695 know more about target types.
5696 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5697 gone away. In their place are various *BACKEND-FOO* variables
5698 corresponding to the slots of the old structure.
5699 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5700 into the target SBCL has been fixed.
5701 * The chill.lisp system for loading cold code into a running SBCL
5703 * Support for the CMU CL "scavenger hook" extension has been removed.
5704 (It was undocumented and unused in the CMU CL sources that SBCL was
5705 derived from, and stale in sbcl-0.6.1.)
5706 * Various errors in the cross-compiler type system were detected
5707 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5708 (enabling various consistency checks). Many of them were fixed,
5709 but some hard problems remain, so the compiler is back to
5710 running without *TYPE-SYSTEM-INITIALIZED* for now.
5711 * As part of the cross-compiler type system cleanup, I implemented
5712 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5713 * I have started adding UNCROSS calls throughout the type system
5714 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5715 on cross-compiler input files will be able to go away, and various
5717 * CONSTANTP now returns true for quoted forms (as explicitly required
5720 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5722 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5723 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5724 (MAKE-LIST -1). In the longer term, it ought to become true
5725 that declarations are assertions even at SAFETY 1. For now, it's not
5726 quite true even at SAFETY 3, but it's at least more nearly true..
5727 (Note that this change seems to increases the size of the system by
5728 O(5%) and to decrease the speed of the compiler by 20% or more.)
5729 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5730 for the problem of printing dozens of lines of distracting information
5731 about low-level system machinery as part of the top stack frame
5732 on entry to the debugger when an undefined function was called.
5733 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5734 is not reset to COMMON-LISP-USER.
5735 * Compilation of stuff related to dyncount.lisp has been made conditional
5736 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5737 smaller. The various dyncount-related symbols have been moved into
5738 a new "SB-DYNCOUNT" package.
5739 * tty-inspect.lisp has been renamed to inspect.lisp.
5740 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5741 feature has gone away. (When we eventually port to other flavors of
5742 libc and/or Unix, we'll try to make the differences between flavors
5743 invisible at the user level.)
5744 * Various other *FEATURES* tags, and/or their associated conditionals,
5745 have been removed if obsolescent, or given better documentation, or
5746 sometimes given more-mnemonic names.
5748 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5750 * tidied up "make.sh" script
5751 * tidied up system directory structure
5752 * better "clean.sh" behavior
5753 * added doc/FOR-CMUCL-DEVELOPERS
5754 * many many small tweaks to output format, e.g. removing possibly-confusing
5755 trailing #\. character in DESCRIBE-INSTANCE
5756 * (EQUALP #\A 'A) no longer signals an error.
5757 * new hashing code, including EQUALP hashing
5758 * tidied up Lisp initialization and toplevel
5759 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5760 * command line argument processing
5761 * added POSIX-GETENV function to deal with Unix-ish environment variables
5762 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5763 terminating SBCL on EOF
5764 * non-verbose GC by default
5765 * There is no more "sbcl" shell script; the sbcl file is now the C
5766 runtime executable (just like CMU CL).
5767 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5769 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5770 symbol and package information as Lisp native symbol and package objects
5771 instead of strings naming symbols and strings naming packages. This way,
5772 whenever packages are renamed (as in warm init), debug information is
5773 transformed along with everything else.
5774 * tweaked the optimization policy declarations which control the building
5775 of SBCL itself. Now, among other things, the system no longer saves
5776 source location debugging information. (This helps two problems at once
5777 by reducing SBCL size and by keeping SBCL from trying to look for its
5778 sources -- which may not exist -- when reporting errors.)
5779 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5780 debugging and testing purposes
5781 * cleaned up printing, making the printer call PRINT-OBJECT for
5782 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5783 methods, giving nearly-ANSI behavior
5784 * converted almost all special variables to use *FOO* naming convention
5785 * deleted PARSE-TIME functionality, since it can be done portably
5786 * moved some files out of cold init into warm init
5787 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5789 * regularized formatting of source files
5790 * added an install.sh script
5791 * fixed ridiculous memory usage of cross-compiler by making
5792 compiler/alloc.lisp not try to do pooling unless it can hook
5793 itself into the GC of the cross-compilation host. Now the system
5794 builds nicely on my old laptop.
5795 * added :SB-ALLOC in target-features.lisp-expr
5796 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5797 was not implemented)
5798 * re-did condition handling and note reporting in the compiler. Notes
5799 are no longer handled by signalling conditions. Style warnings
5800 and warnings are handled more correctly and reported in such a way
5801 that it's easy to find one or the other in your output (so that you
5802 can e.g. figure out which of many problems caused COMPILE-FILE to
5804 * changed the severity of several compiler warnings from full WARNING
5805 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5806 compiler note reporting so that it doesn't use the condition system
5807 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5808 COMPILE-FILE command)
5809 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5810 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5811 no longer supported, since their implementation was deeply intertwingled
5812 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5813 * removed bogus "support" for compiler macros named (SETF FOO), and
5814 removed the compiler macro for SETF INFO (but only after making a fool
5815 of myself on the cmucl-imp mailing list by posting a bogus patch for
5816 DEFINE-COMPILER-MACRO..)
5817 * Compiled files containing forms which have side effects on the Lisp
5818 reader (such as DEFPACKAGE forms) are now handled more correctly.
5819 (Compiler queuing of top level lambdas has been suppressed by setting
5820 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5821 * deleted various currently-unused source files, e.g. gengc.lisp. They
5822 may be added back at some point e.g. when porting to other architectures,
5823 but until they are it's distracting to distribute them and to try to
5825 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5826 there were so many of them they're just distractions, and UNCROSS is
5827 known to be able to handle the current sources
5828 * moved PROFILE functionality into TRACE, so that it will be clear
5829 how the wrapping and unwrapping of functions when you profile them
5830 interacts with the wrapping and unwrapping of functions when you
5831 trace them. (Actually, the functionality isn't there yet, but at least
5832 the interface specification is there. Hopefully, the functionality will
5833 arrive with some future maintenance release.)
5834 * removed host-oops.lisp
5835 * changed signature of QUIT function to allow UNIX-CODE argument
5836 * fixed READ-SEQUENCE bug
5837 * tweaked verbose GC output so that it looks more like the progress
5838 output that ANSI specifies for functions like LOAD
5839 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5840 * added <http://sbcl.sourceforge.com> to the banner information printed by