1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.42
3 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
5 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
7 * enhancement: symbols are printed using fully qualified names in several
8 error and warning messages which are often associated with package
9 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
10 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
11 thanks to Andrew Golding)
12 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
14 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
15 breaking code that tried to write the value of a printer control variable.
16 (lp#581564, thanks to Stas Boukarev)
17 * bug fix: WRITE compiler macro did not handle output stream designators
18 correctly. (lp#598374, thanks to Stas Boukarev)
19 * bug fix: better availability of names of foreign functions in backtraces
20 on Linux. (lp#626962, thanks to Stas Boukarev)
21 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
22 lp#627581, thanks to Josh Elsasser and Jim Wise)
23 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
24 thanks to Josh Elsasser)
25 * bug fix: using aliases for builtin classes as defmethod specializers
26 without adding DEFTYPEs for them works. (lp#618387)
27 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
29 * bug fix: legally dynamic-extent lists and vectors used as
30 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
31 * bug fix: inline-expansion creating references to dead lambda-variables
32 (lp#454681, thanks to Alexey Dejneka)
33 * bug fix: better error message for bogus numerical arguments to RANDOM.
34 (lp#598986, thanks to Stas Boukarev)
35 * bug fix: the compiler occasionally inlined references from incompatible
36 environments occurs. (lp#308951)
38 changes in sbcl-1.0.42 relative to sbcl-1.0.41
41 ** Cross-compilation host is now specified to make.sh using
42 command-line argument --xc-host=<command> instead of a positional
43 argument. (thanks to Daniel Herring)
44 ** Install location can be specified to make.sh using command-line
45 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
46 * optimization: The default implementation of
47 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
48 * enhancement: Explicit memory barrier operations are now available for use
49 by multithreaded code. See documentation for details.
50 * enhancement: Experimental support for threading on Linux/PPC.
51 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
52 * bug fix: EXPT signals an error if first argument is a zero and second
53 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
54 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
55 (lp#576594, thanks to Roman Marynchak)
56 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
57 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
59 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
60 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
61 cached, leading to many fewer expensive calls to
62 COMPUTE-APPLICABLE-METHODS.
63 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
64 CLASS argument, search for and call an appropriate optimized ctor function
66 * bug fix: WRITE always returns the correct value.
68 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
69 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
70 * bug fix: Name conflicts between symbols passed as arguments to a single
71 call to IMPORT no longer add multiple symbols with the same name to the
72 package (detectable via DO-SYMBOLS).
73 * bug fix: support building without the dlshim on darwin x86 and x86-64
75 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
77 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
78 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
80 * bug fix: linkage-table entries on PPC now no longer overflow their
81 space allocation (potentially causing crashes if they are written out
83 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
84 platforms, preventing the GC from seeing stale pointers on the control
85 stack in subsequent GCs (which would, and does, break invariants).
86 * bug fix: 32-bit unicode external formats now work on big-endian systems.
87 * bug fix: Literal characters with code points greater than about 32767
88 now work on PPC UNICODE builds.
89 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
90 high order bits are explicitly cleared out. In some contrived situations,
91 this could lead to wrong results in mixed real/complex float arithmetic.
92 * bug fix: Fix function/macro redefinition warnings when building with
93 clisp. (lp#576787, thanks to Josh Elsasser)
94 * new platform: experimental support for ppc/openbsd (thanks to Josh
96 * bug fix: Floating-point traps now work on ppc/linux.
98 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
99 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
100 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
101 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
102 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
103 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
104 SB-THREAD:GRAB-MUTEX.
105 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
106 contain additional data structures and tools for concurrent programming;
107 at the moment it contains a lock-free queue, and a lock-free mailbox
109 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
110 GET-MUTEX but takes &key rather than &optional parameters. Also added
111 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
113 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
114 SB-THREAD:WAIT-ON-SEMAPHORE.
115 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
117 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
118 conditions to defer the deadline for forever.
119 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
121 * enhancement: errors from NO-APPLICABLE-METHOD and
122 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
123 generic function call.
124 * enhancement: SB-BSD-SOCKET improvements
125 ** sockets and socket streams now have a more informative printed
126 representation based on the corresponding SOCKET-NAME and
128 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
130 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
131 CL:CLOSE when appropriate, and no longer disassociates the stream
132 from the socket if close failed. (lp#543951)
133 * improvements to the instrumenting profiler
134 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
135 ** optimization: counters no longer use locks for the overflow mode.
136 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
137 incurred an off-by-one miscount.
138 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
139 * enhancement: improved DEFMETHOD pretty-printing.
140 * enhancement: perform range reduction when arguments are too large for
141 x87's transcendentals (instead of returning 0). (lp#327192)
142 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
143 some of CL-PPCRE's macros. (lp#570079)
144 * enhancement: our machine code is slightly less hostile to valgrind on
146 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
147 to Robert Swindells and Aleksej Saushev)
148 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
149 * bug fix: a rare case of startup-time page table corruption.
150 * bug fix: a semaphore with multiple waiters and some of them unwinding due
151 to timeouts could be left in an inconsistent state.
152 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
153 * bug fix: misoptimization of multiplication by one in
154 (SB-C::FLOAT-ACCURACY 0) policies.
155 * bug fix: miscounts in SB-PROFILE.
156 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
157 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
158 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
159 up itself" (March 2010) for further details.
160 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
161 against length of the list if the element is found before the specified
162 END is reached. (thanks to Alec Berryman, lp#554385)
163 * bug fix: errors signalled during package graph modification no longer
164 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
165 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
166 :SB-DOC feature. (lp#552564)
167 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
168 * bug fix: more robust runtime executable path detection. (lp#375549)
169 * bug fix: GCD always returns positive values. (lp#413680)
170 * bug fix: Converting division to multiplication by reciprocal handles
172 * bug fix: We were too eager in eliding range reduction tests on x87.
173 The maximal magnitude is 2^63, not 2^64.
174 * bug fix: Transforms for TRUNCATE don't die when the result is completely
176 * bug fix: Maybe restore buildability on Alpha.
177 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
179 * bug fix: RANDOM-STATE can be printed readably again.
180 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
181 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
182 types) could result in type mismatches during compilation.
184 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
185 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
186 stack frame thrown from.
187 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
188 compiler optimization qualities inside dynamic extent of its body.
189 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
190 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
192 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
193 constraint propgation, allowing better compilation eg. when used to
194 access structures with WITH-SLOTS. (lp#520366)
195 * optimization: the compiler is now more aware of the type of the underlying
196 storage vector for multidimensional simple arrays resulting in better code
197 for accessing such arrays.
198 * optimization: passing NIL as the environment argument to TYPEP no longer
199 inhibits optimizing it. (lp#309788)
200 * optimization: more efficient register usage when handling single-float
201 arguments on x86-64. (thanks to Lutz Euler)
202 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
203 pre-allocated temporary vectors. (lp#496249)
204 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
205 in :INITIAL-CONTENTS. (lp#523612)
206 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
207 functions. (lp#524707)
208 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
209 WITH-SLOTS usages during compilation.
210 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
211 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
212 all x86oid platforms with :UD2-BREAKPOINTS target feature.
213 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
214 instruction (tested on x86oid linux with ud2-breakpoints).
215 * bug fix: slam.sh now works on win32.
216 * bug fix: better differences of numeric types. (lp#309124)
217 * bug fix: arrays declared intersection and union types can have their
218 upgraded element type derived. (lp#316078)
219 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
220 threads started during profiling. (lp#472499)
221 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
223 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
224 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
225 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
226 values instead of signaling an error. (lp#309093)
227 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
229 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
230 declarations (lp#497321)
231 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
232 and failed to detect circular lists (lp#452008)
233 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
235 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
236 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
237 due to it, so that handlers can run.
238 * bug fix: reparsing undefined types if they have become defined since
240 * bug fix: missing &REST type in a proclamation for a function with both
241 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
242 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
243 expanded calls (lp#542174)
244 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
245 than just at toplevel form.
247 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
248 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
249 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
250 but work on type specifiers.
251 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
252 to name a type specifier.
253 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
254 specifier is valid where "valid" basically means "would be accepted as
255 second argument of TYPEP".
256 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
257 returns the function's declared, or derived FTYPE.
258 * new feature: SB-POSIX now supports accessing the d_ino member of
259 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
260 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
261 provide for seeding a RANDOM-STATE object with user-provided data or
262 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
263 attempt to initialize the returned state from the operating system's
264 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
265 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
266 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
267 * bug fix: Fix grammar and style issues for the docstrings of
268 printer-related variables and functions. (Thanks to mon_key; launchpad
270 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
272 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
273 in a row even though a handler defered the deadline long into the
275 * bug fix: A deadline handler was run without interrupts enabled for a
276 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
277 in infinitely spinning, non-killable threads.
278 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
279 before reaching the erring stack frame.
280 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
281 real power. (launchpad bug lp#525949)
282 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
283 GENCGC platforms. (launchpad bug lp#529014)
284 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
285 (launchpad bug lp#525916)
286 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
287 (Thanks to Robert Goldman)
289 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
290 * optimization: ROUND with a single single-float or double-float argument
291 is properly inlined when possible.
292 * optimization: Slightly better code is generated for integer<->float
293 conversions and for single-float<->double-float conversions on x86-64.
294 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
295 code for 32-bit and 64-bit rotations on x86-64.
296 * bug fix: The install script changes the ownership of directories as well
297 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
298 launchpad bug lp#508485)
299 * bug fix: TRUNCATE with a single single-float or double-float argument is
300 properly inlined when possible. (launchpad bug lp#489388)
301 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
302 no longer causes a compiler error on x86 and ppc.
303 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
304 always relative to *READTABLE* rather than the passed argument.
306 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
307 * minor incompatible change: threading support is now enabled by default
309 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
311 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
312 are now caught and reported just like errors during macroexpansion.
313 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
314 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
315 * enhancement: ASDF systems can now depends on SB-QUEUE.
316 * fixes and improvements related to Unicode and external formats:
317 ** bug fix: error handling and restart usage in the ucs-2 external format
319 ** there is now an implementation of the ucs-4 external format.
320 ** the utf-16 and utf-32 external formats are supported.
321 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
322 in the environment. setenv() and unsetenv() are also provided. (reported by
323 Fare Rideau; launchpad bug lp#460455)
324 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
325 loading. This ensures sensible errors for .FASL files from other
326 implementations on case-insensitive filesystems. (reported by Willem
327 Broekema; launchpad bug lp#489417)
328 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
329 Willem Broekema; launchpad bug lp#489698).
330 * bug fix: some minor code rearrangements to reenable warning-free building
331 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
332 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
334 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
337 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
338 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
339 * improvement: support O_LARGEFILE access to files larger than 2GB on
340 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
341 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
342 definitions for methods specializing on the passed class itself.
343 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
344 definitions for methods specializing on the passed class itself, or on
346 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
347 about itself during the build (e.g. for M-? in Slime), if this flag is
348 enabled in customize-target-features.lisp. This will increase the core
349 size by about 5-6mb, though, so it's mostly interesting to SBCL
351 * new feature: various GENCGC tuning parameters have been experimentally
352 documented and exported from SB-EXT. See documentation for details.
353 * fixes and improvements related to Unicode and external formats:
354 ** the Unicode character database has been upgraded to the
355 Unicode 5.2 standard, giving names and properties to a number of new
356 characters, and providing a few extra characters with case
358 ** improvement: restarts for providing replacement input/output on coding
359 errors for fd-stream external formats.
360 ** improvement: where :<encoding> is a keyword corresponding to an
361 external format the system supports, it is now possible to specify
362 (:<encoding> :replacement <character>) as an external format which will
363 automatically substitute <character> on encoding or decoding errors for
364 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
366 ** improvement: the file streams underlying the standard streams (such as
367 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
368 which uses the replacement mechanism to handle encoding errors,
369 preventing various infinite error chains and unrecoverable I/O
371 ** minor incompatible change: the utf-8 external format now correctly
372 refuses to encode Lisp characters in the surrogate range (char-codes
373 between #xd800 and #xdfff).
374 ** fix a typo preventing conversion of strings into octet vectors
375 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
377 ** fix a bug in the octet multibyte handling of decoding errors and the
378 USE-VALUE restart. (launchpad bug lp#314939)
379 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
380 restart on fd-stream decoding errors.
381 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
382 error is near the end of file.
383 ** fix a double-error case in unibyte octet conversions, when the first
384 use of USE-VALUE is ignored.
385 ** fix bugs in handling of undefined code points in unibyte encodings.
386 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
387 streams after an UNREAD-CHAR.
388 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
389 object is allocated in a boxed region of dynamic space.
390 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
391 fork with multiple Lisp threads running is made, instead of going
392 ahead with unpredictable consequences. (reported by Leslie Polzer)
393 * bug fix: uses of slot accessors on specialized method parameters within
394 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
395 error while finalizing the class. This fix may cause classes with slot
396 accessors to be finalized later than previously. (reported by Lars Rune
397 Nøstdal; launchpad bug lp#473699)
398 * bug fix: restore buildability on the MIPS platform. (regression from
399 1.0.30.38, reported by Samium Gromoff)
400 * bug fix: inspecting closures is less likely to fail with a type error.
401 * bug fix: no timer starvation when setting the system clock back.
402 (launchpad bug lp#460283)
403 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
404 standard pprint dispatch table as specified by CLHS.
405 * bug fix: give CLISP a hint about a type declaration to enable it to build
406 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
408 * bug fix: correctly dump literal objects in defaulting forms of arglists.
409 (reported by Attila Lendvai; launchpad bug lp#310132)
410 * bug fix: distinguish in type specifiers between arrays that might be
411 complex and arrays that are definitely complex. (launchpad bug lp#309129)
412 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
413 type. (reported by Levente Mészáros; launchpad bug lp#485972)
414 * bug fix: setting the value of a symbol-macro within a method in the
415 presence of type declarations works properly again. (reported by Iban
416 Hatchondo; launchpad bug lp#485019)
418 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
419 * optimization: faster FIND and POSITION on strings of unknown element type
420 in high SPEED policies. (thanks to Karol Swietlicki)
421 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
423 * improvement: better error signalling for bogus parameter specializer names
424 in DEFMETHOD forms (reported by Pluijzer)
425 * bug fix: DELETE-FILE once again works on logical pathnames (regression
427 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
429 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
430 removes previous default initargs (reported by Lars Rune Nøstdal and
432 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
433 lambda-lists. (reported by Peter Seibel)
434 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
435 correctly when starting from an executable core without saved runtime
436 options (reported by Faré Rideau, thanks to Zach Beane)
437 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
438 an optimization note instead. (reported by Martin Cracauer)
439 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
440 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
441 new process group if it doesn't need to share stdin with the sbcl
442 process. (thanks to Leslie Polzer)
443 * bug fix: SATISFIES could be misoptimized to refer to a local function.
444 (reported by Stanislaw Halik)
446 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
447 * improvement: stack allocation is should now be possible in all nested
448 inlining cases: failure to stack allocate when equivalent code is manually
449 open coded is now considered a bug.
450 * improvements related to Unicode:
451 ** the Unicode character database has been upgraded to the
452 Unicode 5.1 standard, giving names and properties to a number of new
453 characters, and providing a few extra characters with case
455 ** the system now recognizes and produces names for Unicode Hangul
457 ** the EBCDIC-US external-format is now supported for octet operations
458 (as well as for stream operations).
459 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
460 be used to output toplevel compile-time effects into a separate .CFASL
462 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
463 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
465 * optimization: TRUNCATE on known single- and double-floats is upto 25%
467 * optimization: division of floating point numbers by constants uses
468 multiplication by reciprocal when an exact reciprocal exists.
469 * optimization: multiplication of single- and double-floats floats by
470 constant two has been optimized.
471 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
472 sufficient type information is available. (thanks to Leslie Polzer)
473 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
474 known structure objects are as efficient as defstruct generated accessors.
475 * optimization: unused vector creation can now be optimized away.
476 * improvement: ASDF systems can now depends on SB-INTROSPECT.
477 * improvement: a STYLE-WARNING is signalled when a generic function
478 clobbers an earlier FTYPE proclamation.
479 * improvement: the compiler is able to track the effective type of
480 generic function across method addition and removal even in the
481 absence of an explicit DEFGENERIC.
482 * improvement: DESCRIBE now reports on symbols naming undefined
483 but assumed or declared function as well.
484 * improvement: recompilation of systems using SB-GROVEL now works
485 (thanks to Leslie Polzer)
486 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
487 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
489 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
490 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
491 well as user defined declaration names.
492 ** VARIABLE-INFORMATION is now aware of alien variables.
493 * improvement: improved address space layout on OpenBSD (thanks to Josh
495 * improvement: pretty-printing of various Lisp forms has been improved
496 (thanks to Tobias Rittweiler)
497 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
498 unused were deleted in safe code. (reported by John Fremlin)
499 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
501 * bug fix: some out-of-line array predicates were missing (reported by
503 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
505 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
506 (thanks to Larry D'Anna)
507 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
508 as well. (reported by Josh Elsasser)
509 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
510 leading to possible attempts to delete the same file twice. See docstring
511 on DELETE-FILE for details. (reported by John Fremlin)
512 * bug fix: DELETE-FILE once again deletes the file named by the pathname
513 designator argument, rather than its truename. (reported by Luis
515 * bug fix: the low-level debugger had 32-bit assumptions and was missing
516 information about some array types. (thanks to Luis Oliveira)
517 * bug fix: moderately complex combinations of inline expansions could
518 be miscompiled if the result was declared to be dynamic extent.
519 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
520 form (+ <variable> <integer>) were miscompiled under certain
522 * bug fix: in some cases no compiler note about failure to stack allocate
523 was emitted, even if the objects were in fact heap allocated.
524 * bug fix: minor violation of "otherwise inaccessible" rule for stack
525 allocation could cause objects users might reasonably expect to
526 be heap allocated to be stack allocated.
527 * bug fix: DESCRIBE signalled an error for generic functions under
528 certain circumstances. (thanks to Leslie Polzer)
529 * bug fix: Fixed spelling of an error message.
531 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
532 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
533 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
534 of SB-THREAD:THREAD-ERROR-THREAD.
535 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
536 * new feature: docstrings for local and anonymous functions are no longer
537 discarded. (thanks to Leslie Polzer)
538 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
539 values in other threads.
540 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
541 about object allocation.
542 * optimization: division of a real float by a complex float is implemented
543 with a specialised code sequence.
544 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
545 keywords is an order of magnitude faster.
546 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
547 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
548 methods, and similarly for non-standard metaclass classes as long as there
549 are no methods additional on MAKE-INSTANCE.
550 * optimization: more efficient type-checks for FIXNUMs when the value
551 is known to be a signed word on x86 and x86-64.
552 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
553 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
555 * optimization: compiler is smarter about delegating argument type checks to
557 * optimization: several character functions are now compiled somewhat more
558 efficiently. (reported by Lynn Quam)
559 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
560 * improvement: less unsafe constant folding in floating point arithmetic,
561 especially for mixed complex/real -float operations.
562 * optimization: constant double and single floats are stored in native
563 unboxed format on x86[-64].
564 * optimization: smarter code for arithmetic operations with constant floats,
565 complex floats, or integers on x86[-64].
566 * optimization: smarter code for conjugate/multiplication of float complexes
567 and abs/negate of floats on x86-64.
568 * optimization: more efficient complex float and real float operations on
570 * improvement: complex float division is slightly more stable.
571 * improvement: DESCRIBE output has been reworked to be easier to read and
572 contains more pertinent information.
573 * improvement: failure to provide requested stack allocation compiler notes
574 provided in all cases (requested stack allocation not happening without a
575 note being issued is now considered a bug.)
576 * bug fix: SB-POSIX exports the documented types and functions
577 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
578 types. (reported by "abhi")
579 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
580 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
581 (thanks to Paul Khuong)
582 * bug fix: looping around HANDLER-CASE could silently consume stack space
583 on each iteration. (reported by "foobar")
584 * bug fix: better error signalling when calls to functions seeking elements
585 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
586 (reported by Tobias Rittweiler)
587 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
588 directory components now works as it used to. (various prolems reported by
589 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
590 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
591 (reported by Elliot Slaughter, thanks to Stas Boukarev)
592 * bug fix: bogus undefined variable warnings from fopcompiled references to
593 global variables. (thanks to Lars Rune Nøstdal)
594 * bug fix: foreign function names should now appear in backtraces on
595 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
596 * bug fix: SETF compiler macro documentation strings are not discarded
598 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
599 (thanks to Alex Plotnick)
600 * bug fix: SLEEP accepts large integer arguments, truncating them to
601 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
602 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
603 * bug fix: compiler notes for expensive slot type checks could be emitted
604 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
606 changes in sbcl-1.0.29 relative to 1.0.28:
607 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
608 https://bugs.launchpad.net/sbcl
609 Bugs can be reported directly there, or by sending email to
610 sbcl-bugs@lists.sourceforge.net
611 (no subscription required.)
612 * minor incompatible change: under weak type checking policy integer
613 types are weakened less aggressively.
614 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
615 allowed to return, which causes SBCL to quit with exit status 0. Previously
616 if the function returned with a small integer return value, that value
617 was accidentally reused as the exit status.
618 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
619 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
620 :HASH-FUNCTION argument. Refer to user manual for details.
621 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
623 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
624 microseconds since the Unix epoch on all platforms.
625 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
626 allows the compiler to safely elide boundedness checks for special
628 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
629 the symbol, prohibits both lexical and dynamic binding. This is mainly an
630 efficiency measure for threaded platforms, but also valueable in
632 * new feature: UNC pathnames are now understood by the system on Windows.
633 * optimization: the compiler uses a specialized version of FILL when the
634 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
636 * optimization: accesses to potentially non-simple arrays where element type
637 is known are 50% faster.
638 * optimization: compiler now generates faster array typechecking code.
639 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
641 * optimization: multidimensional array accesses in the absence of type
642 information regarding array rank are approximately 10% faster due to
643 open coding of ARRAY-RANK.
644 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
645 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
647 * optimization: result of call to VECTOR can now be stack allocated.
648 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
649 as long as the resulting array is one-dimensional and has a known
650 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
651 length of the list matches the known length of the vector does not
652 allocate the list as an intermediate step. Ditto for VECTOR and simple
654 * optimization: MAKE-ARRAY can now stack allocate in the presence of
655 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
656 known element type, and is known to be simple and one dimensional.
657 * improvement: SBCL now emits a compiler note where stack allocation was
658 requested but could not be provided (not in all cases, unfortunately)
659 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
660 * improvement: pretty-printing loop has been implemented properly. (thanks
661 to Tobias Rittweiler)
662 * documentation: CLOS slot typechecing policy has been documented.
663 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
664 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
665 pointer, leading to memory faults. (thanks to Bart Botta)
666 * bug fix: better floating point exception handling on x86/OpenBSD.
667 (thanks to Josh Elsasser)
668 * bug fix: exit status from QUIT when called under --script was lost
669 (reported by Hubert Kauker)
670 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
671 same implementation of FILL to initialize the array, even if a more
672 efficient one was available (reported by Stas Boukarev, thanks to
674 * bug fix: potential miscompilation of array stack allocation on x86 and
675 x86-64. (reported by Time Tossavainen)
676 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
677 result in their subforms being treated as top level forms. (reported by
679 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
680 than a machine register could leave garbage in the high bits of the
681 result register (bug 316325).
682 * bug fix: disable address space randomization Linux/x86-64 as well,
683 not just x86-64. (reported by Ken Olum)
684 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
685 generate incorrect code.
686 * bug fix: #201; type inference for CONS and ARRAY types could derive
687 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
688 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
689 could not be assigned to or bound with PROGV. (reported by Lorenz
691 * bug fix: the value of CL:- in the inspector was the previous expression
692 evaluated rather than the expression being evaluated.
693 * bug fix: constants can no longer be locally declared special.
694 * bug fix: signals delivered to threads started from foreign land (read:
695 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
696 thread by blocking all signals and resignalling.
697 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
698 from :INITFORM, if any.
700 changes in sbcl-1.0.28 relative to 1.0.27:
701 * a number of bugs in cross-compilation have been fixed, with the ultimate
702 result that building under (at least) clisp should be much more reliable.
703 * minor incompatible changes: echo-streams now propagate unread-char to the
704 underlying input stream, and no longer permit unreading more than one
706 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
707 frames, allowing for instance more reliable backtraces.
708 * improvement: the debugger REPL can now reference lexical variables
709 by name directly for code compiled with (DEBUG 3).
710 * improvement: errors from malformed declarations now have better source
711 paths associated with them. (thanks to Tobias Rittweiler)
712 * optimization: faster local calls on x86/x86-64
713 * bug fix: some error messages for out-of-bound array indexes confused the
714 index and the bound. (thanks to Stas Boukarev)
715 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
717 * bug fix: running regressions tests in shells without OSTYPE set now works.
718 (reported by Harald Hanche-Olsen)
719 * bug fix: more robust static space exhaustion signalling from
720 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
721 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
722 docstring away instead of storing it under names such as (LAMBDA (X)).
723 (reported by Leslie Polzer)
724 * bug fix: timers could go off in the wrong order, be delayed indefinitely
725 (thanks to Ole Arndt for the patch)
726 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
727 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
728 potentially-invalid effective methods in its cache.
729 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
730 instances as well (thanks to Paul Khuong)
731 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
732 SB-POSIX:WAITPID and their C equivalents.
733 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
735 changes in sbcl-1.0.27 relative to 1.0.26:
736 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
737 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
738 * improvement: the system either recovers from stack exhaustion or dies
739 properly as opposed to leaving the user uncertain of whether the handler
740 trampled on some random memory next to the stack or having to rely on
741 --lose-on-corruption (which is still a good idea to use in production
742 because stack exhaustion can happen in signal handlers which will likely
744 * bug fix: fix gc related interrupt handling bug on ppc (regression from
745 1.0.25.37, reported by Harald Hanche-Olsen)
746 * bug fix: work around signal delivery bug in darwin (regression from
747 1.0.25.44, reported by Sidney Markowitz)
748 * bug fix: fix ERROR leaking memory (reported by David Thompson)
750 changes in sbcl-1.0.26 relative to 1.0.25:
751 * incompatible change: an interruption (be it a function passed to
752 INTERRUPT-THREAD or a timer function) runs in an environment where
753 interrupts can be enabled. The interruption can use
754 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
755 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
756 potentially running out of stack. Keep in mind that in the absence
757 of WITHOUT-INTERRUPTS some potentially blocking operation such as
758 acquiring a lock can enable interrupts.
759 * incompatible change: GC-OFF and GC-ON are removed, as they were
760 always unsafe. Use WITHOUT-GCING instead.
761 * new feature: runtime option --disable-ldb
762 * new feature: runtime option --lose-on-corruption to die at the
763 slightest hint of possibly non-recoverable errors: running out of
764 memory, stack, alien stack, binding stack, encountering a memory
765 fault, etc. In the absence of --lose-on-corruption a warning is
767 * enhancement: detect binding stack exhaustion
768 * enhancement: detect alien stack exhaustion on x86/x86-64
769 * improvement: generally more stable and reliable interrupt handling
770 * improvement: there is a per thread interruption queue,
771 interruptions are executed in order of arrival
772 * improvement: a repeating timer reschedules itself when the it has
773 finished, but expiration times are spaced equally. If an
774 expiration time is in the past it will trigger after a short grace
775 period that may give a chance to other things to run.
776 * optimization: slightly faster gc on multithreaded builds
777 * optimization: faster WITHOUT-GCING
778 * bug fix: when JOIN-THREAD signals an error, do it when not holding
779 important locks so that the debugger/handler doesn't produce
780 recursive errors or deadlock.
781 * bug fix: real-time signals are not used anymore, so no more
782 hanging when the system wide real-time signal queue gets full.
783 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
785 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
786 * bug fix: fix random memory faults related to interrupts on alpha
787 * bug fix: fix random memory faults related to interrupts on sparc
788 * bug fix: fix deadlocks related to starting threads
789 * bug fix: fix deadlines on locks on futex platforms
790 * bug fix: restore errno in signal handlers
791 * bug fix: fix deadlocks related to hash tables
792 * bug fix: fix deadlocks in pcl
794 changes in sbcl-1.0.25 relative to 1.0.24:
795 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
796 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
797 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
798 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
799 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
800 better name and does not return values so stale on multiprocessor systems.
801 Also, HOLDING-MUTEX-P was added for about the only sane usage of
803 * improvement: unithread builds keep track of MUTEX-VALUE.
804 * improvement: reading from a TWO-WAY-STREAM does not touch the output
805 stream anymore making it thread safe to have a concurrent reader and
806 a writer, for instance, in a pipe.
807 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
808 arguments, making compiler-macros for SETF-functions able to inspect
809 their constant arguments.
810 * improvement: COMPILE-FILE reports times with millisecond accuracy
811 (thanks to Luis Oliveira)
812 * optimization: CHAR-CODE type derivation has been improved, making
813 TYPEP elimination on subtypes of CHARACTER work better. (reported
814 by Tobias Rittweiler, patch by Paul Khuong)
815 * bug fix: setting alien structure fields of type struct by value now
816 computes the right offset for the memory copy.
817 * bug fix: compilation problem involving inlined calls to aliens with
818 result type VOID. (reported by Ken Olum)
819 * bug fix: #235a; sequential inline expasion in different policies no
820 longer reuses the functional from the previous expansion site.
821 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
822 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
823 * bug fix: named ENUMs in multiply-referenced alien record types no longer
824 cause an implied type redefinition. Regression from 1.0.21.29.
825 * bug fix: sign-extension of small signed return values now works with C
826 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
827 * improvements to the Windows port:
828 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
829 Westfold, thanks to Rudi Schlatte)
831 changes in sbcl-1.0.24 relative to 1.0.23:
832 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
833 vector of a multidimensional SIMPLE-ARRAY.
834 * new feature: the system now signals a continuable error if standard
835 readtable modification is attempted. (thanks to Tobias Rittweiler)
836 * new feature: DIRECTORY has been extended with a non-standard keyword
837 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
838 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
839 has been robustified and documented better. (thanks to Robert Goldman)
840 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
841 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
842 * tradeoff: constant FORMAT control strings are now compiled unless
843 SPACE > SPEED (previously only when SPEED > SPACE.)
844 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
846 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
848 * bug fix: lexical type declarations are now correctly reported by
849 SB-CLTL2. (reported by Larry D'Anna)
850 * bug fix: STRING-TO-OCTETS did not handle :START properly when
851 using UTF-8 as external format. (thanks to Luis Oliveira)
852 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
853 are signalled correctly. (thanks to Stas Boukarev)
854 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
855 designator. (thanks to Tobias Rittweiler)
856 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
857 designator, and returns T instead of the function. (thanks to
859 * bug fix: direct superclasses of STANDARD-CLASS and
860 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
861 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
862 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
863 when no class with the named slot yet exists no longer causes a
864 compile-time style-warning.
865 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
866 in safe code. (reported by Didier Verna)
867 * bug fix: #430; nested structure constructors can stack allocate.
868 * bug fix: on some 64-bit platforms dynamic space size was truncated
869 to #xffff0000 bytes. (reported by Benjamin Lambert)
870 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
871 REPL unusable. (reported by Daniel Herring)
872 * bug fix: return values of READ-SEQUENCE did not take :START into
873 account on file streams, regressions since 1.0.12.22. (reported by
874 Thomas Russ, patch by Paul Khuong)
875 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
876 method specializer used to confuse permuation vector optimization.
877 * bug fix: system inserted bogus implicit type declarations for local
878 special variables in DEFMETHOD bodies.
879 * bug fix: #354; duplicated frames in backtraces due to
880 non-tail-call-optimized XEPs to functions with return type NIL
882 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
883 initializes structure object slots according to DEFSTRUCT initforms,
884 and DEFSTRUCT forms :INCLUDEind structure classes defined using
885 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
886 (reported by Bruno Haible and Stephen Wilson)
887 * bug fix: #395; fill-pointer output streams used now support
888 element-type BASE-CHAR as well.
889 * bug fix: compiler error when attempting to derive return value of
890 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
892 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
894 * bug fix: Mac OS X binaries should now be portable between Leopard
897 changes in sbcl-1.0.23 relative to 1.0.22:
898 * enhancement: when disassembling method functions, disassembly
899 for the associated fast function is also produced.
900 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
902 * optimization: printing with *PRINT-PRETTY* true is now more
903 efficient as long as the object being printed doesn't require
904 special handling by the pretty printer.
905 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
906 now interact correctly with type declarations.
907 * partial bug fix: PCL detects infinite recursion during wrapper
908 validation. (thanks to Attila Lendvai)
909 * bug fix: #426; nested function calls are inlined properly.
910 Previously if FOO was an inline function, in calls of the form
911 (FOO (FOO ...)) the outer call was not inlined.
912 * bug fix: long long arguments passed in registers to alien
913 functions on PowerPC Linux and NetBSD are now handled correctly
914 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
916 changes in sbcl-1.0.22 relative to 1.0.21:
917 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
918 for the shared object in the current directory, but passes the native
919 namestring of the designated pathname to the operation system's shared
920 object loading function as-it.
921 * minor incompatible change: --disable-debugger toplevel option now takes
922 effect before processing of initialization files and --eval or --load
924 * new feature: new commandline argument: --script, which supports
925 shebang lines. See documentation for details. (based on work by
927 * new feature: SAVE-LISP-AND-DIE can save current values of
928 --dynamic-space-size and --control-stack-size in the executable core,
929 causing it to skip normal runtime option processing. See documentation
930 for details. (thanks to Zach Beane)
931 * enhancement: inoccous calls to EVAL or generic functions dispatching
932 on subclasses of eg. STREAM no longer cause compiler notes to appear.
933 * enhancement: the system no longer resignals errors from --load and
934 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
935 associated with the original error to be lost. (thanks to Ariel
937 * enhancement: :DONT-SAVE keyword argument has been added to
938 LOAD-SHARED-OBJECT for controlling interaction with
939 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
940 the effects of an earlier LOAD-SHARED-OBJECT call.
941 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
942 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
943 provided. (reported by Cedric St-Jean)
944 * bug fix: circularity handling in the reader did not treat raw
945 structure slots correctly. (reported by Cedric St-Jean)
946 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
947 file descriptors when there were none.
948 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
949 was broken. (reporteed by Willem Broekema)
950 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
951 pathnames without a directory.
952 * bug fix: COMPILE-FILE did not warn about undefined variable
953 references at toplevel, and LOAD of the resulting fasl did
955 * bug fix: functions with non-required arguments used to end up with
956 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
957 * bug fix: redefining a function with non-required arguments didn't
958 update the system's knowledge about its call signature properly.
959 * bug fix: fixed #431; incompatible alien record type redefinitions
960 are detected and handled. (reported by Neil Haven)
961 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
962 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
964 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
965 after alien stack frames.
966 * bug fix: strings passed to mk{s,d}temp lacked null termination
968 changes in sbcl-1.0.21 relative to 1.0.20:
969 * new feature: the compiler is able to track the effective type of a
970 generic function across method addition and removal.
971 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
972 appropriately typed structure slots without locking.
973 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
974 information like those gathered by TIME using a programming-friendly
976 * new feature: TIME reports time taken even if the form performs a
977 non-local transfer of control.
978 * enhancement: reduced conservativism on GENCGC platforms: on
979 average 45% less pages pinned (measured from SBCL self build).
980 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
981 mutate constant symbols or violate declaimed type of the symbol.
982 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
983 sleeping on the semaphore in heavily contested semaphores.
984 * bug fix: semaphores and condition variables were not interrupt
986 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
987 owned by other threads anymore.
988 * bug fix: FIND on lists called KEY outside the specified
989 subsequence. (reported by budden)
990 * bug fix: LOG doesn't use single-float intermediate results when
991 given mixed integer and double-float arguments, leading to better
992 precision. (reported by Bob Felts)
993 * bug fix: LOG with base zero returned values of inconsistent type.
995 changes in sbcl-1.0.20 relative to 1.0.19:
996 * minor incompatible change: OPTIMIZE qualities
997 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
998 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
999 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1000 * documentation: some slot access efficiency guidelines have been
1001 added to the user manual.
1002 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1003 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1004 as ASSOC and MEMEBER.
1005 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1006 to more efficient EQ-comparison versions more often.
1007 * optimization: enhanced derivation of DOLIST iteration variable type
1009 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1011 * optimization: runtime lookup of function definitions can be
1012 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1013 * optimization: compiler is able to derive the return type of
1014 (AREF (THE STRING X) Y) as being CHARACTER.
1015 * optimization: CLRHASH on empty hash-tables no longer does pointless
1016 work. (thanks to Alec Berryman)
1017 * optimization: REPLACE deftransforms don't punt when :START1 or
1019 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1020 no longer emits a code deletion note. (reported by Andrew
1022 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1023 functions with an odd number of &OPTIONAL arguments, a &REST
1024 argument, and one or more &KEY arguments at the call site.
1025 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1026 arguments appeared at call sites as well.
1027 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1028 READ-LINE &co can no longer read from them afterwards. (reported
1030 * bug fix: fixed #427: unused local aliens no longer cause compiler
1031 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1033 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1034 alien-stack leakage. (reported by Andy Hefner)
1035 * bug fix: PROGV signals an error when an attempt to violate declared
1036 type of a variable or bind a constant is made.
1037 * bug fix: SET signals an error when an attempt to violate declared
1038 type of a variable is made.
1039 * bug fix: restart computation during the execution of a restart
1040 test function no longer causes infinite recursion. (reported by
1042 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1043 signals an error. (thanks to Pierre Mai)
1044 * bug fix: EXPORT left symbol unexported in conflict situations.
1045 (thanks to Michael Weber)
1046 * bug fix: correctly handle name conflicts involving CL:NIL.
1047 (thanks to Michael Weber)
1048 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1049 conflicts arising from USEing package with conflicting symbols
1050 correctly. (thanks to Michael Weber)
1052 changes in sbcl-1.0.19 relative to 1.0.18:
1053 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1054 warnings that go otherwise unhandled will be muffled if they are
1055 of the type that's the value of this variable.
1056 * optimization: stack allocation is slightly more efficient on x86
1058 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1059 where a raw slot always is initialized using the initform whose
1060 type is not know sufficiently well a compile-time are now compiled
1061 correctly. (reported by John Morrison)
1062 * bug fix: compiler no longer makes erronous assumptions in the
1063 presence of non-foldable SATISFIES types.
1064 * bug fix: stack analysis missed cleanups of dynamic-extent
1065 arguments in non-let-converted calls to local functions.
1066 * improvements to the Windows port:
1067 ** adjusted address spaces for building on both Win32 and
1068 Win64. (thanks for John Connors)
1069 * fixed some bugs revealed by Paul Dietz' test suite:
1070 ** interval arithmetic during type derivation used inexact integer
1071 to single-float coercions.
1072 ** arithmetic operations involving large integers and single
1073 floats give the same results in compiled and interpreted code.
1074 ** deriving the result type of COERCE no longer signals an error
1075 if the derived type of the second argument is a MEMBER type
1076 containing invalid type specifiers.
1077 ** ADJOIN with constant NIL as second argument works correctly.
1078 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1080 changes in sbcl-1.0.18 relative to 1.0.17:
1081 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1082 profiles only the current thread.
1083 * minor incompatible change: changes to SYMBOL-VALUE of constants
1084 defined with DEFCONSTANT now signal an error.
1085 * enhancement: SB-SPROF now has support for wallclock profiling,
1086 and is also able to profile specific threads. REPORT output
1087 has also additional sorting options.
1088 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1090 * optimization: structure allocation has been improved
1091 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1092 ** out of line constructors are ~10% faster.
1093 ** inline constructors are ~15% faster.
1094 ** inline constructors are capable of dynamic extent allocation
1095 (generally on x86 and x86-64, in some cases on other platforms
1097 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1099 * optimization: file compiler is now able to coalesce non-circular
1100 lists, non-base strings, and bit-vectors. Additionally, constants
1101 are never referenced through SYMBOL-VALUE at runtime.
1102 * optimization: code defining methods on PRINT-OBJECT (and other
1103 generic functions in the COMMON-LISP package) now loads faster.
1104 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1106 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1107 fasl is now deleted. (reported by Attila Lendvai)
1108 * bug fix: READ-LINE always returned NIL for the last line in files.
1109 (reported by Yoshinori Tahara)
1110 * bug fix: more accurate disassembly annotations of foreign function
1111 calls. (thanks to Andy Hefner)
1112 * bug fix: trimming non-simple strings and non-string string
1113 designators when the there is nothing to trim works properly.
1114 (thanks to James Knight)
1115 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1116 (thanks to Travis Cross)
1117 * fixed some bugs revealed by Paul Dietz' test suite:
1118 ** NIL is a valid function name (regression at 1.0.13.38)
1119 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1120 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1121 fill pointers properly (regression at 1.0.12.23)
1122 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1123 displacement indices properly (regression at 1.0.12.23)
1125 changes in sbcl-1.0.17 relative to 1.0.16:
1126 * temporary regression: user code can no longer allocate closure
1127 variable storage on stack, due to bug 419 without explicitly
1128 requesting it. Please consult sbcl-devel for advice if you need to
1129 use this feature in the meanwhile.
1130 * new feature: runtime argument --control-stack-size can be used to
1131 adjust thread default control stack size.
1132 * enhancement: improved TIME output
1133 ** all times are reported using the measured accuracy (milliseconds
1134 for real and GC times, microseconds for everything else.)
1135 ** processor cycle counts on x86 and x86-64.
1136 ** interpreted forms are counted for both evaluator modes.
1137 ** number of lambdas converted by the compiler is reported.
1138 ** CPU percentage report (computed from real and total run time.)
1139 ** more comprehensive run time reporting, using a condenced format
1140 ** interperted form, lambda, and page fault counts are omitted
1142 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1144 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1145 * optimization: two argument forms of LAST are upto ~10% faster
1146 in normal SPEED policies.
1147 * optimization: NCONC no longer needs to heap cons its &REST list
1148 in normal SPEED policies.
1149 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1150 to Sidney Markowitz)
1151 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1152 regression since 1.0.9.1. (thanks to Eric Marsden)
1153 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1154 since 1.0.15.36. (thanks to Paul Khuong)
1155 * bug fix: LAST when always returned the whole list when given a bignum
1156 as the second argument.
1157 * bug fix: dynamic extent allocation of nested lists and vectors
1158 could leak to otherwise accessible parts.
1159 * bug fix: invalid optimization of heap-allocated alien variable
1161 * bug fix: fasl header checking is less vulnerable to different
1162 platform word lengths.
1163 * bug fix: more correct assembler syntax for GNU binutils
1164 2.18.50.0.4 support. (thanks to Marijn Schouten)
1165 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1167 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1168 declarations) successfully. (reported by Attila Lendvai)
1170 changes in sbcl-1.0.16 relative to 1.0.15:
1171 * minor incompatible change: revert the changes to sb-posix's error
1172 signaling added in 1.0.14.
1173 * minor incompatible change: change PROBE-FILE back to returning
1174 NIL whenever we can't get a truename, as was the case before 1.0.14.
1175 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1176 inherits from ERROR instead of just CONDITION.
1177 * new feature: SB-INTROSPECT can provide source locations for instances
1178 as well. (thanks to Tobias Rittweiler)
1179 * optimization: binding special variables now generates smaller code
1180 on threaded platforms.
1181 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1182 and cases where no :TEST is given but the compiler can infer that
1183 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1184 * optimization: better LOGNOT on fixnums.
1185 * optimization: modular arithmetic for a particular requested width
1186 is implemented using a tagged representation unless a better
1187 representation is available.
1188 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1189 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1190 for wellformedness and returns a specialized vector. (reported by
1191 Francois-Rene Rideau)
1192 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1193 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1194 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1195 unscheduling timer at the same time as another timer fires.
1196 * bug fix: don't reschedule timers for dead threads.
1197 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1198 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1199 bogus errors if select() was interrupted.
1200 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1202 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1203 * enhancement: cleaner backtraces for interactive interrupts, as
1204 well as other cases where the interesting frames used to be
1205 obscured by interrupt handling frames.
1206 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1207 now supported, and tracing a whole package using (TRACE "FOO") now
1208 traces SETF-functions as well.
1209 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1210 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1211 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1212 * unreadably printed representation of hash-tables now includes
1214 * bug fix: partially fixed #188: type propagation from assignments
1215 is now more efficient.
1216 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1217 'DOUBLE-FLOAT) are not flushable.
1218 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1219 full address of the object, and none of the tag bits.
1220 * bug fix: readably printing hash-tables now respects other printer
1221 control variables. (reported by Cedric St-Jean)
1222 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1223 keyword with MAKE-HASH-TABLE.
1224 * bug fix: export SB-POSIX:MKSTEMP.
1225 * bug fix: SORT was not interrupt safe.
1226 * bug fix: XREF accounts for the last node of each basic-block as
1228 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1229 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1230 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1231 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1232 create obsolete instances in the case of redefinition or
1233 obsoletion of a superclass. (thanks to Andy Hefner)
1234 * bug fix: Support for the Alpha architecture has been revived; it had
1235 suffered somewhat from lack of maintenance since sbcl-1.0.
1236 * improvements to the Windows port:
1237 ** The system detects the codepage to use at startup, instead of
1238 using the value from the saved core. (thanks to Kei Suzuki)
1240 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1241 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1242 (see documentation for details.)
1243 * revived support for OpenBSD (contributed by Josh Elsasser)
1244 * partially fixed bug #108: ROOM no longer suffers from occasional
1245 (AVER (SAP= CURRENT END)) failures.
1246 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1247 bodies no longer cause a WARNING to be signalled. (reported by
1249 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1250 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1251 the bug in TRUNCATE.) (reported by Michael Weber)
1252 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1253 no samples. (reported by Andy Hefner)
1254 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1255 no longer appear as (NIL ...) frames in backtraces.
1256 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1257 is now actually exported from SB-EXT as documented. (reported by
1259 * bug fix: sb-aclrepl now correctly understands how to inspect
1260 single-floats on 64-bit platforms where single-floats are not boxed.
1261 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1262 yet been finalized. (reported by Levente Meszaros)
1263 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1264 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1265 SBCL-specific optimize qualities.
1267 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1268 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1269 an executable in the search path, and does so in the child
1270 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1271 been removed; it can be found in the CVS history, for somebody who
1272 needs that search behavior (see the manual).
1273 * minor incompatible change: compiler policy re. weakening type
1274 checks has changed: now type checks are weakened only if SAFETY < 2
1276 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1277 unparsing of directory pathnames as files. Analogously,
1278 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1279 filename to parse into a directory pathname.
1280 * enhancement: implicit generic function creation now signals a
1281 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1282 users can bind handlers for and muffle around calls to LOAD.
1283 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1284 to be used (using the default stream external format), and allows
1285 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1286 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1287 strings and vectors whose element-type or simplicity is not fully
1288 known at compile-time.
1289 * optimization: STRING-TRIM and related functions no longer allocate
1290 a new string when no trimming needs to be performed. These functions
1291 are also faster than before when the input string has been declared
1293 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1294 * optimization: READ-LINE is significantly faster for files containing
1296 * optimization: non-open coded uses of character comparison operators
1297 (e.g. char=) no longer cons when called with more than one parameter
1298 on platforms supporting dynamic-extent allocation.
1299 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1300 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1301 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1303 * bug fix: some sequence functions elided bounds checking when
1305 * bug fix: too liberal weakening of union-type checks when SPEED >
1307 * bug fix: more bogus fixnum declarations in ROOM implementation
1310 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1311 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1312 :SYNCHRONIZED argument, which makes the hash-table safe for
1313 concurrent accesses (but not iteration.) See also:
1314 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1315 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1316 * optimization: CONCATENATE on strings is an order of magnitude faster
1317 in code compiled with (> SPEED SPACE).
1318 * optimization: SUBSEQ is ~50% faster on lists.
1319 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1320 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1321 END is smaller then START.
1322 * bug fix: SB-PROFILE will no longer report extra consing for nested
1323 calls to profiled functions.
1324 * bug fix: ROOM implementation had bogus fixnum declarations which
1325 could cause type-errors when calling ROOM on large images.
1326 * bug fix: if file compilation is aborted, the partial fasl is now
1327 deleted, and COMPILE-FILE returns NIL as the primary value.
1328 * bug fix: number of thread safety issues relating to SBCL's internal
1329 hash-table usage have been fixed.
1330 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1331 be returned from its body when the values were being returned
1332 using unknown-values return convection and the W-P-O was wrapped
1333 inside an UNWIND-PROTECT.
1334 * bug fix: sb-posix should now compile again under Windows, enabling
1335 slime to work again.
1337 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1338 * incompatible change: hash-table accessor functions are no longer
1339 automatically protected by locks. Concurrent accesses on the same hash-table
1340 from multiple threads can give inconsistent results or even corrupt the
1341 hash-table completely. Multi-threaded applications should do their own
1342 locking at the correct granularity. In the current implementation it is
1343 still safe to have multiple readers access the same table, but it's not
1344 guaranteed that this property will be maintained in future releases.
1345 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1346 and will signal an error at runtime.
1347 * enhancement: SB-THREAD package now exports a semaphore interface.
1348 * enhancement: CONS can now stack-allocate on x86 and
1349 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1351 * enhancement: nested lists can now be stack allocated on
1352 platforms providing stack allocation support.
1353 * enhancement: dynamic-extent support has been extended to support
1354 cases where there are multiple possible sources for the stack
1356 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1357 if the mutex is uncontested on Linux.
1358 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1359 as specified by the CLHS. (thanks to Tobias Rittweiler)
1360 * bug fix: NaN comparison now works on x86-64.
1361 * bug fix: CLOSE :ABORT T on a stream with pending output now
1363 * bug fix: instances of non-standard metaclasses using standard
1364 instance structure protocol sometimes missed the slot type checks
1366 * bug fix: known functions can be inlined in high-debug code.
1368 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1369 * minor incompatible change: the MSI installer on Windows no longer
1370 associates .lisp and .fasl files with the installed SBCL.
1371 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1372 on Windows. (thanks to Luis Oliviera)
1373 * new feature: SB-CLTL2 contrib module now implements
1374 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1375 * optimization: scavenging weak pointers is now more efficient,
1376 requiring O(1) instead of O(N) per weak pointer to identify
1377 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1378 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1379 method bodies using constant slot-names when the first argument is
1380 a specializer parameter for the method.
1381 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1382 names, when the class of the instance is a direct instance
1383 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1384 as slow as the constant slot-name case.)
1385 * optimization: member type construction is now O(N) instead
1387 * optimization: UNION and NUNION are now O(N+M) for large
1388 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1390 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1391 now more readable in environments like Slime which display it.
1392 (thanks to Tobias C. Rittweiler)
1393 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1394 was able to infer the correct argument type for the object on which
1395 the CAS operation was being performed.
1396 * bug fix: copy propagation interfered with parallel assignment
1397 semantics in local calls. (reported by Paul Khuong)
1398 * bug fix: the signed modular fixnum shift compiled to wrong code on
1399 x86 and x86-64. (spotted by a slight modification to some of
1402 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1403 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1404 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1405 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1407 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1408 and generic function now print the object identity for anonymous
1409 instances. (thanks to Attila Lendvai)
1410 * enhancement: as an extension to MOP, SBCL now supports SETF of
1411 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1412 (thanks to Attila Lendvai)
1413 * enhancement: sb-cover has an alternate annotation mode which puts
1414 the form annotations at the car of the form, instead of annotating
1415 it completely. The benefit of this mode is that it shows better
1416 which forms were instrumented by the compiler.
1417 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1418 by printer control variables. (reported by Dan Corkill)
1419 * bug fix: system leaked memory when delayed output was performed by
1420 the OS in smaller chunks then expected. (thanks to David Smith)
1421 * bug fix: system leaked memory when file streams were not closed
1423 * bug fix: large objects written to slow streams that were modified
1424 after the write could end up with the modified state written to
1425 the underlying file descriptor.
1426 * bug fix: multiple threads operating in parallel on the same stream
1427 could cause buffer-overflows.
1428 * bug fix: source location information is stored correctly
1429 (broken since 1.0.6). This bug would generally show up as the
1430 Slime debugger highlighting the wrong form when the sldb-show-source
1432 * bug fix: Branch forms are again annotated as branches in the sb-cover
1434 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1435 on x86-64. (reported by Gregory Vanuxem)
1436 * bug fix: EQUALP could return wrong results for structures with raw
1437 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1438 word). (reported by Vjacheslav Fyodorov)
1439 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1442 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1443 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1444 atomic compare-and-swap operations on threaded platforms.
1445 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1446 allows assigning a global minimum value to optimization qualities
1447 (overriding proclamations and declarations).
1448 * enhancement: closed over variables can be stack-allocated on x86
1450 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1452 * optimization: slot definition lookup is now O(1). This speeds up
1453 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1454 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1455 * optimization: ASSOC and MEMBER can now be open-coded for all
1456 combinations of keyword arguments when second argument is constant
1457 and SPEED >= SPACE. In other cases a specialized version is
1459 * bug fix: using obsoleted structure instances with TYPEP and
1460 generic functions now signals a sensible error.
1461 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1462 (reported by Kristoffer Kvello)
1463 * bug fix: backtrace construction is now more careful when making
1464 lisp-objects from pointers on the stack, to avoid creating bogus
1465 objects that can be seen by the GC.
1466 * bug fix: defaulting of values in contexts expecting more than 7
1467 variables now works on x86-64. (reported by Christopher Laux)
1468 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1470 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1471 as the property-list of a symbol.
1472 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1473 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1474 situations requested, are once again file-compileable. (reported
1477 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1478 * MOP improvement: support for user-defined subclasses of
1479 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1480 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1481 the expansion of DEFMETHOD, is responsible for generating a form
1482 which creates a list of specializers when evaluated. Additional
1483 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1484 debugging and introspective support.
1485 * minor incompatible change: the (unsupported) spinlock interface
1486 has changed: free spinlock now has the value NIL, and a held spinlock
1487 has the owning thread as its value.
1488 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1489 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1491 * enhancement: name of a socket-stream is now "a socket" instead of
1492 "a constant string".
1493 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1494 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1495 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1496 for generic functions. (Thanks to Tobias C. Rittweiler)
1497 * optimization: bignum printing speed has been improved by 20-40%
1498 (depending on the bignum size.)
1499 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1501 * bug fix: the cache used by the CLOS to store precomputed effective
1502 methods, slot offsets, and constant return values is now thread and
1504 * bug fix: generic function dispatch function updating is now thread
1505 and interrupt safe (in the sense that the known issues have been
1507 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1508 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1509 * bug fix: asdf systems with dependencies to the SB-POSIX or
1510 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1511 * bug fix: interrupt safety of applicable method computation has been
1514 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1515 * new contrib: sb-cover, an experimental code coverage tool, is included
1516 as a contrib module.
1517 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1518 significantly faster.
1519 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1520 produce more efficient code on x86-64 if the compiler can determine
1521 that (+ INDEX <constant>) does not require a bounds check and FOO
1522 has an element type at least 8 bits wide.
1523 * enhancement: a new, experimental synchronous timeout facility is
1524 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1525 * enhancement: when a symbol name conflict error arises, the
1526 conflicting symbols are always printed with a package prefix.
1527 (thanks to Kevin Reid)
1528 * enhancement: stepping is now once again supported on the SPARC and
1529 MIPS platforms. (It is also now more likely to work on CheneyGC
1531 * enhancement: sb-sprof can now also track and report accurate call
1533 * bug fixes: the treatment of non-standard subclasses of
1534 SB-MOP:SPECIALIZER is more correct.
1535 * incompatible change: PURIFY no longer copies the data from the
1536 dynamic space into the static and read-only spaces on platforms
1537 that use the generational garbage collector
1538 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1540 * bug fix: GC race condition occasionally resulting in crashes with
1541 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1543 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1545 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1546 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1547 * bug fix: an asynchronous interrupt could previously leave the
1548 system running with GC inhibited.
1549 * bug fix: a DECLARE form evaluated at top-level now causes an error
1550 rather than silently (or verbosely) returning NIL.
1551 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1552 result in a error being signalled due to source form lookup errors.
1553 (reported by Peter Graves)
1555 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1556 * incompatible change: removed writer methods for host-ent-name,
1557 host-ent-addresses -- changing the values did not update the DNS
1559 * minor incompatible change: changed experimental JOIN-THREAD interface
1560 * documentation: the manual now lists reader and writer methods
1561 in class slot documentation sections. (thanks to Richard M Kreuter)
1562 * documentation: unwinding from asyncronous events has been
1563 documented as unsafe.
1564 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1565 in multithreaded application code.
1566 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1567 platforms. (thanks to James Anderson for the optimization hint)
1568 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1570 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1571 variants no longer cons.
1572 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1573 their NOT- variants no longer cons.
1574 * optimization: EQUAL hash tables no longer use SXHASH for objects
1575 of all data types, but instead use an EQL hash for types for which
1576 EQUAL is the same as EQL.
1577 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1578 are significantly faster.
1579 * optimization: new STRING-OUTPUT-STREAM implementation is much
1580 faster for large outputs and conses 30% less on average.
1581 * enhancement: XREF information is now collected for references made
1582 to global variables using SYMBOL-VALUE and a constant argument.
1583 * enhancement: SIGINT now causes a specific condition
1584 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1585 * bug fix: FILE-POSITION used to signal an error in some cases where
1586 ANSI requires it to return NIL.
1587 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1588 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1589 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1591 * bug fix: bad type declaration in the CLOS implementation has
1592 been fixed. (reported by James Anderson)
1593 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1594 (thanks to Lutz Euler)
1595 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1596 required by the CLHS. (reported by Samium Gromoff)
1597 * bug fix: dead unbound variable references now signal an error.
1598 (reported by Marco Monteiro)
1599 * bug fix: / with an unused value was being deleted in safe code.
1600 (thanks to Marco Monteiro and Kevin Reid)
1601 * bug fix: number of characters that can be written onto a single
1602 line in a file is unlimited.
1603 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1604 been fixed by inhibiting interrupts for when GC is disabled.
1605 * bug fix: some interrupt safety issues with GETHASH, (SETF
1606 GETHASH), CLRHASH and REMHASH have been fixed.
1607 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1608 specifier no longer causes infinite recursion.
1609 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1610 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1611 * bug fix: an &environment argument with the correct variable information
1612 is passed to macros that are expanded during byte compilation.
1613 (reported by Samium Gromoff)
1614 * bug fix: a logic error was causing the hash function for bignums to
1615 have excessive amounts of collisions. (reported by Faré Rideau)
1616 * bug fix: modifying the contents of an array could change the return
1617 value of SXHASH on that array, which is only allowed for strings
1618 and bit vectors. (bug introduced in 0.9.16)
1619 * improvement: the x86-64/darwin port now passes all tests (except
1620 for the debugger tests) but should still be considered
1621 experimental until this is fixed.
1622 * improvement: a style-warning is signaled for CASE (etc) clauses with
1623 duplicate keys. (thanks to Kevin Reid)
1624 * improvement: macos/x86 and macos/x86-64 now use mach exception
1625 handlers for dealing with illegal instructions (for trapping and
1626 error handling) and memory protection violations (for GC).
1628 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1629 * new platform: experimental support for x86-64/darwin (MacOS).
1630 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1631 and getnameinfo sockets functions are used instead of gethostbyaddr
1632 and gethostbyname, on platforms where the newer functions are available.
1633 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1635 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1636 don't print the startup banner, but behave as if --noinform was passed
1637 as a command line argument. (thanks to Kevin Reid)
1638 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1639 * optimization: code using alien values with undeclared types is much faster.
1640 * optimization: the compiler is now able to open code SEARCH in more cases.
1641 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1642 * bug fix: using standardized COMMON-LISP special variables as loop
1643 variables no longer signals bogus package lock violations. (reported
1645 * bug fix: declaring local loop variables to be of a range-limited type
1646 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1647 (reported by Andras Simon)
1648 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1649 bugs remain on x86-64.)
1650 * bug fix: the #= and ## reader macros now interact reasonably with
1651 funcallable instances.
1652 * bug fix: type-checks for function arguments were compiled using the
1653 compiler policy settings of the wrong lexical environment (in 1.0.2
1655 * bug fix: SHADOW accepts characters as string designators, as required
1656 by the spec (thanks to Eric Marsden)
1657 * bug fix: fixed GC safety issues when foreign functions are called with
1658 non-base strings as arguments
1659 * bug fix: more consistent error output for fatal-compiler-warnings, like
1661 * bug fix: functions with proper names were showing up as NIL in
1662 backtraces (reported by Edi Weitz, regression in 1.0.2)
1664 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1665 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1666 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1667 produce more efficient code on the x86 if the compiler can determine
1668 that (+ INDEX <constant>) does not require a bounds check and FOO
1669 has an element type at least 8 bits wide.
1670 * bug fix: references to undefined variables are handled the same way
1671 in toplevel forms as in the normal compiler
1672 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1674 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1675 (thanks to Jon Buller)
1676 * improvement: faster compilation times for complex functions
1677 * improvement: added readlink support to SB-POSIX (thanks to Richard
1680 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1681 * improvement: experimental support for mach exception handling on
1682 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1684 * improvement: support for GBK external format.
1685 (thanks to Chun Tian (binghe))
1686 * improvement: the debugger now displays variables that have been closed
1687 over, in code compiled with (DEBUG 2) or higher
1688 * improvement: support for executable cores on NetBSD (thanks to
1690 * new feature: added a RESTART-FRAME debugger command
1691 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1692 be used to provide an implementation for FILE-POSITION on Gray streams
1693 (thanks to Eric Marsden)
1694 * new feature: add syslog, openlog and closelog support to SB-POSIX
1695 (thanks to Richard Kreuter)
1696 * optimization: the function call overhead in code compiled with
1697 a high DEBUG optimization setting is significantly
1698 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1699 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1700 (thanks to Tony Martinez)
1701 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1702 evaluated once (reported by Kevin Reid)
1703 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1704 works again (thanks to Kilian Sprotte)
1705 * bug fix: an error is signaled for tagbodies with duplicate tags
1706 (thanks to Stephen Wilson)
1707 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1708 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1709 stack frames from alien callbacks.
1710 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1711 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1712 65k pages (thanks to David Woodhouse)
1713 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1715 changes in sbcl-1.0.1 relative to sbcl-1.0:
1716 * new platform: FreeBSD/x86-64, including support for threading.
1717 * new feature: the compiler stores cross-referencing information
1718 about function calls (who-calls), macroexpansion (who-macroexpands)
1719 and special variables (who-binds, who-sets, who-references) for code
1720 compiled with (< SPACE 3). This information is available through the
1721 sb-introspect contrib.
1722 * new feature: users may subclass SEQUENCE, and have instances of
1723 these classes interoperate with standard Common Lisp functions if
1724 a number of methods are defined. (This feature is experimental
1725 and the interface subject to change based on feedback from SBCL
1726 users and the general community)
1727 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1728 x86/x86-64, rather than the previous fixed depth of 8
1729 * improvement: another pthread back-end of mutex "pthread-futex".
1730 * bug fix: non-ascii command-line arguments are processed correctly
1731 (thanks to Yaroslav Kavenchuk)
1732 * bug fix: non-required arguments were not passed correctly when a method
1733 defined using DEFMETHOD was called from a mop-generated method using
1734 CALL-NEXT-METHOD (reported by Pascal Costanza)
1735 * bug fix: recursion is now permitted in accessors through
1736 SLOT-UNBOUND. (reported by Pascal Costanza)
1737 * bug fix: an error was signaled at startup if the HOME environment
1738 variable was defined, but had an empty value (reported by Peter Van Eynde)
1739 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1740 signal a PROGRAM-ERROR, not a BUG.
1741 * bug fix: SB-POSIX:READDIR works when built with large file support.
1742 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1744 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1745 for better automatic indentation support. (thanks to Matt Pillsbury)
1746 * optimization: loading generic functions no longer takes O(n^2) time,
1747 proportional to the amount of methods in the generic function
1748 (reported by Todd Sabin and Jeremy Brown)
1749 * optimization: the FIND and POSITION family of sequence functions
1750 are significantly faster on arrays whose element types have been
1752 * improvements to the Windows port:
1753 ** Intermittent heap corruption problems have been fixed. (thanks
1754 to Alastair Bridgewater)
1755 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1757 ** Lisp is able to unwind foreign exception frames from alien
1758 callbacks. (thanks to Alastair Bridgewater)
1760 changes in sbcl-1.0 relative to sbcl-0.9.18:
1761 * improvement: experimental support for threading on FreeBSD/x86.
1762 (thanks to NIIMI Satoshi)
1763 * improvement: runtime option --dynamic-space-size can be used
1764 to set the size of the dynamic space reserved on startup.
1765 * improvement: floating point modes in effect are now saved in
1766 core, and restored on startup.
1767 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1768 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1769 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1770 threads are not running after *SAVE-HOOKS* have run.
1771 * improvement: writes to CLOS instance slots are type-checked in code
1772 compiled with (SAFETY 3)
1773 * improvement: floating-point exception handling on FreeBSD (thanks to
1775 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1776 (thanks to Zach Beane)
1777 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1779 * improvement: added support for the Shift-JIS external format.
1780 (contributed by NIIMI Satoshi)
1781 * improvement: callbacks are supported on Linux/PPC. (thanks to
1783 * bug fix: compiler bug triggered by a (non-standard) VALUES
1784 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1785 * bug fix: file compiler no longer confuses validated and already
1786 dumped structurres. (reported by Kaersten Poeck)
1787 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1788 fill-pointer signals a type-error as required. (thanks to
1790 * bug fix: disassemly of funcallable instances works.
1791 * bug fix: single stepping on PPC.
1792 * bug fix: fix thread-safety problems in the type system (generally
1793 manifesting as nonsensical errors like "STRING is a bad type specifier
1794 for sequences" or "The value 1 is not of type FIXNUM")
1795 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1796 (reported by Josip Gracin)
1797 * bug fix: an error is signaled for attempts to displace arrays with
1798 incompatible element types (thanks to Mario Mommer)
1799 * bug fix: more correct handling of wide characters in debug info
1800 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1801 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1802 and don't cause extra consing
1803 * optimization: MAP and MAP-INTO are significantly faster on vectors
1804 whose elements types have been declared.
1805 * Improvements to SB-SPROF:
1806 ** Support for allocation profiling
1807 ** Reduced profiling overhead, especially for long profiling runs
1808 * Improvements to the Windows port:
1809 ** floating point exceptions are now reported correctly.
1810 ** stack exhaustion detection works partially.
1811 ** more accurate GET-INTERNAL-REAL-TIME.
1812 ** better RUN-PROGRAM behaviour in case of errors in the child
1814 ** PROBE-FILE now simplifies pathnames correctly.
1815 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1816 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1817 1st 1970 (although time timezone data will be unreliable).
1818 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1820 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1821 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1822 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1824 * bug fix: two potential GC deadlocks affecting threaded builds.
1825 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1826 returns T (reported by Anton Kazennikov)
1827 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1828 with non-variable places
1829 * bug fix: remove a race condition in the setting of
1830 funcallable-instance functions, this should make threaded CLOS
1831 code more stable against memory faults.
1832 * bug fix: corruption of specials when unbinding is interrupted by an
1833 asynchronous unwind (reported by Hannu Koivisto)
1834 * improvement: the debugger will now also display local variables that
1835 are only used once, for code compiled with a DEBUG optimization quality
1838 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1839 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1840 * incompatible change: External-format support for FFI calls. The
1841 SB-ALIEN:C-STRING no longer implies an ASCII
1842 external-format. Instead the string is subject to external-format
1843 conversion. Additionally return values of type SB-ALIEN:C-STRING
1844 are by default of type (SIMPLE-ARRAY CHARACTER), not
1845 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1846 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1847 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1848 * incompatible change: SB-EXT package no longer contains the
1849 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1850 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1852 * incompatible change: the single-stepper is no longer available
1853 on Alpha, Mips and Sparc platforms.
1854 * minor incompatible change: the direct superclasses of
1855 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1856 not (STANDARD-OBJECT FUNCTION). This makes the
1857 class-precedence-lists of GENERIC-FUNCTION and
1858 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1860 * minor incompatible change: the default stream external format on
1861 non-unicode SBCL is no longer detected from the locale, but is always
1863 * new feature: Add a version of evaluator that uses an interpreter instead
1864 of the compiler. EVAL still uses the compiler by default, to switch it
1865 to use the interpreter, set the value of the variable
1866 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1867 * minor incompatible change: the single-stepper REPL has been merged
1868 with the normal debugger (see the "Stepping" heading of the debugger help
1869 for more details). The debugger command STEP will no longer switch
1870 to the single-stepper REPL.
1871 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1872 for a type now works.
1873 * bug fix: loading of default sysinit file works. (thanks to Leonid
1875 * bug fix: better detection of circularities in the file-compiler.
1876 (reported by Marco Monteiro)
1877 * bug fix: the CL pathname functions now work with files that have
1878 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1879 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1880 systems with Unix98 pty semantics.
1881 * bug fix: ASDF-INSTALL will now work with bsd tar.
1882 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1884 * bug fix: timers expiring in dead threads no longer cause a
1885 type-error (reported by Paul "Nonny Mouse").
1886 * bug fix: thanks to more lightweight single-stepper instrumentation,
1887 code compiled with (DEBUG 3) will compile and execute significantly faster,
1888 and will have more accurate type-inferencing than before
1889 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1890 whose bindings are modified
1891 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1892 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1893 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1894 CL:SOFTWARE-VERSION with proper version
1896 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1897 * feature: implemented the READER-METHOD-CLASS and
1898 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1899 as specified by AMOP.
1900 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1902 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1903 (thanks to Lutz Euler)
1904 * optimization: hashing of general arrays and vectors has been
1905 improved. (reported by Any Fingerhut)
1906 * enhancement: SB-INTROSPECT is now able to find definitions of
1907 profiled functions. (thanks to Troels Henriksen)
1908 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1909 as well, allowing compiler-macros for SETF-functions to expand.
1910 * enhancement: step-instrumentation no longer wraps known
1911 single-value functions with multiple-value context, allowing
1912 better type inference.
1913 * fixed bug #337: use of MAKE-METHOD in method combination now works
1914 even in the presence of user-defined method classes. (reported by
1915 Bruno Haible and Pascal Costanza)
1916 * fixed bug #339(c): if there are applicable methods not part of any
1917 long-form method-combination group, call INVALID-METHOD-ERROR.
1918 (reported by Bruno Haible)
1919 * fixed bug #361: the :FUNCTION initarg in the protocol for
1920 initialization of methods can now be used to override
1921 internally-produced optimized functions. (reported by Bruno
1923 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1924 system-provided lambda expression no longer cause warnings about
1925 unbound #:|pv-table| symbols.
1926 * bug fix: improved the handling of type declarations and the
1927 detection of violations for keyword arguments with non-constant
1929 * bug fix: potentially erronous calls to PATHNAME and
1930 MERGE-PATHNAMES were being flushed in some cases.
1931 (reported by Richard Kreuter)
1932 * bug fix: compiled calls to TYPEP were mishandling obsolete
1933 instances. (reported by James Bielman and Attila Lendvai)
1934 * bug fix: format strings with ~> without matching ~< no longer
1935 trigger an AVER, but signal an understandable error instead.
1936 (reported by Antonio Martinez)
1937 * bug fix: specifying an output-file without a pathname-type for
1938 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1939 of input-file instead of "fasl". (reported by Robert Dodier)
1940 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1941 (reported by James Y Knight).
1942 * bug fix: compiler-macros-function did not consider the environment
1943 argument for shadowing by local functions.
1944 * bug fix: compiler-macros expansion was inhibited by local INLINE
1946 * bug fix: inline expansions of known functions were subject to
1947 step-instrumentation in high debug policies, leading to problems
1948 with type-inference.
1949 * bug fix: compiler failed to differentiate between different CONS
1950 types in some cases.
1951 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1952 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1953 * bug fix: #368: incorrect use of expressed vs. upgraded array
1955 * bug fix: #306a: more precise unions of array types.
1956 * thread-safety improvements:
1957 ** CONDITION-WAIT could return early on Linux, if the thread was
1958 interrupted and subsequently continued with SIGCONT.
1959 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1961 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1962 * added support for the ucs-2 external format. (contributed by Ivan
1964 * minor incompatible change: pretty printing of objects of type
1965 (cons symbol) is, in the default pprint-dispatch-table, now
1966 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1968 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1969 called later in a class's lifetime, possibly as late as when the
1970 first instance of the class is created. Previously,
1971 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1972 class became finalizeable.
1973 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1974 for multibyte external-format streams. (thanks to "vbzoli")
1975 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1976 with :ALLOCATION :CLASS inherited from superclasses of the
1978 * fixed bug: anonymous classes can now be created using the :NAME
1979 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1980 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1981 * fixed bug: core-files saved with :EXECUTABLE T can again be
1982 executed when SBCL_HOME isn't set. (reported by James Knight)
1983 * fixed bug: toplevel LOCALLY forms with declarations could
1984 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1985 * fixed bug: printing from several different threads using different
1986 values of *print-case* could cause invalid output, due to
1987 some internal special variables of the printer not being bound
1988 thread-locally (reported by Max Mikhanosha)
1989 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1990 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1991 (reported by Pascal Costanza)
1992 * fixed bug: FINALIZE-INHERITANCE is called from
1993 REINITIALIZE-INSTANCE on classes when the class has previously
1994 been finalized, as required by AMOP.
1995 * minor code generation optimizations:
1996 ** better register allocation in CLOS dispatching functions
1997 ** overflow detection when coercing signed bytes to fixnums on x86-64
1998 ** is now implemented with one IMUL instruction instead of three shifts
1999 ** more efficient bit-vector access on x86 and x86-64
2000 ** more efficient access to raw structure slots on x86 and x86-64
2001 * fixed some bugs revealed by Paul Dietz' test suite:
2002 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2003 return its argument.
2005 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2006 * feature: thread support on Solaris/x86, and experimental thread support
2008 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2010 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2011 default method for SLOT-UNBOUND.
2012 * minor incompatible change: prevent the user from specializing the
2013 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2014 somewhat counter to the intent of the protocol, I (CSR) think, and
2015 additionally it just doesn't work in SBCL as currently
2016 implemented, thanks to optimizations (that are always valid for
2017 the other three SLOT-VALUEish functions, but not for the setter).
2018 * minor incompatible change: the :SB-LDB feature is now enabled by
2019 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2020 the low-level debugger.
2021 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2022 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2023 down to an SB-SYS:FD-STREAM, allowing direct communication in
2024 more cases. Temporary files and pipes are still used as a fallback
2026 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2027 on the non-reentrant C functions localtime(3) and gmtime(3).
2028 * bug fix: global optimization policy was not visible in LOCALLY and
2030 * bug fix: class objects can be used as specializers in methods.
2031 (reported by Pascal Costanza)
2032 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2033 with a type error. (reported by blitz_ on #lisp)
2034 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2035 failed with a type error. (reported by Pascal Bourguignon)
2036 * bug fix: merging pathnames against defaults with :DIRECTORY
2037 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2038 (reported by James Y Knight)
2039 * bug fix: saving large (>2GB) cores on x86-64 now works
2040 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2041 constant index and a (simple-array (signed-byte 32)) array
2042 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2043 error (patch by Robert J. Macomber)
2044 * feature: TIME now displays the amount of run-time spent in GC
2045 * bug fix: The debugger now does a better job of respecting
2046 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2047 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2048 workaround for bug 403.)
2049 * bug fix: floating point exception handling now works on FreeBSD
2050 (thanks to NIIMI Satoshi)
2051 * fixed some bugs revealed by Paul Dietz' test suite:
2052 ** MISC.641: LET-conversion were not supposed to work in late
2054 * improvements to the Win32/x86 port:
2055 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2056 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2058 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2059 * new feature: source path information is generated for macro-expansion
2060 errors for use in IDE's like Slime (thanks to Helmut Eller)
2061 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2062 * bug fix: compiler does not loop forever on an invalid type in
2064 * improvement: compilation of most CLOS applications is significantly
2066 * optimization: added a limited bytecode compiler for simple toplevel
2067 forms, speeding up compilation and FASL loading
2068 * bug fix: the statistical profiler now properly distinguishes anonymous
2071 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2072 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2073 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2074 into subclasses of the finalized class. Now user calls to
2075 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2076 system return before any subclasses are finalized.
2077 * minor incompatible change: The reader no longer ignores errors
2078 regarding non-existent packages in #+ and #- feature tests.
2079 * new feature: command line options --no-sysinit, --no-userinit to
2080 inhibit loading the corresponding init files
2081 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2082 for sending data through UDP sockets (thanks to François-René Rideau)
2083 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2084 error is signalled instead (thanks to François-René Rideau)
2085 * minor incompatible change: Error signalling behaviour of lexical
2086 operations violating package locks has changed slightly. Refer to
2087 documentation on package locks for details.
2088 * enhancement: EVAL can process IF-expressions without resorting to the
2090 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2091 constant-folded properly due to missing out-of-line functions.
2092 (reported by Mika Pihlajamäki)
2093 * bug fix: LISTEN sometimes returned T even in cases where no data was
2094 immediately available from the stream
2095 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2096 were reversed. (reported by Levente Mészáros)
2097 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2098 when given a vector displaced to an adjustable array. (reported
2100 * bug fix: derivation of float boundaries from numbers outside the
2101 appropriate float range (reported by John Wiseman)
2102 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2104 * bug fix: precomputing cache entries for generic functions with
2105 some subclasses of specializers as yet invalid does not attempt to
2106 fill a cache line with a negative offset. (reported by Levente
2108 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2109 allow condition class objects as arguments to DOCUMENTATION and
2110 (SETF DOCUMENTATION); only find and set documentation for
2111 structure names for the STRUCTURE doc-type. (suggested by Gary
2113 * improvements to the Win32/x86 port:
2114 ** (user-homedir-pathname) and default initialization file
2115 locations now know about the user's "Documents and Settings"
2116 directory (thanks to Yaroslav Kavenchuk)
2117 ** run-program is implemented (thanks to Mike Thomas)
2118 ** sockets support (thanks to Timothy Ritchey)
2119 ** better backtrace support (thanks to Alastair Bridgewater)
2120 ** sb-grovel supported
2121 ** asdf-install and sb-posix work somewhat
2122 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2123 * improvements to the Solaris/x86 port:
2124 ** works on Solaris 11/Solaris Express
2125 ** floating-point exception handling support
2126 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2127 * fixed some bugs revealed by Paul Dietz' test suite:
2128 ** REMOVE-METHOD returns its generic function argument even when
2129 the method is not one of the generic functions' methods.
2130 ** objects declared as MEMBER types can be admissible arguments to
2131 structure accessors.
2132 ** printing characters should simply be printed by the FORMAT ~:C
2134 ** compiler failure when compiling functions with hairy constant
2135 defaults for optional parameters.
2136 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2137 function, which is already optimized.
2139 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2140 * new platform: experimental support for SBCL x86/Darwin, including
2141 MacOS X 10.4.5 on Intel.
2142 * new feature: Unicode character names are now known to the system
2143 (through CHAR-NAME and NAME-CHAR).
2144 * new feature: the filesystem location of SBCL's core file is
2145 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2146 * minor incompatible change: the contrib modules SB-POSIX and
2147 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2148 this change is to make it easier to distribute
2149 location-independent binaries.
2150 * bug fix: as implied by AMOP, standardized classes no longer have
2151 slots named by external symbols of public packages. (reported by
2153 * optimization: calling functions via constant symbols -- as in
2154 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2155 via the function object as in (FUNCALL #'FOO).
2156 * optimization: on x86 and x86-64, the calling convention for the
2157 case of dealing with an unknown number of values has been altered
2158 to be friendlier to the prediction heuristics implemented,
2159 particularly with reference to CALL and RET pairing. (thanks to
2160 Alastair Bridgewater)
2161 * optimization: on x86, the code for access to thread-local symbol
2162 values and binding/unbinding of thread-local symbols is smaller.
2163 (thanks to Alastair Bridgewater)
2164 * enhancement: CONSTANTP is now able to determine constantness of
2165 more complex forms, including calls to constant-foldable standardized
2166 functions and some special forms beyond QUOTE.
2167 * fixed bug: occasional GC crashes on Solaris/x86
2168 * optimization: x86-64 supports stack allocation of results of simple
2169 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2170 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2171 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2172 (thanks to James Knight)
2173 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2174 by the standard (thanks to Stephen Compall)
2176 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2177 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2178 be used for bundling the runtime and the core file into one
2179 executable binary. This feature is not currently supported on all SBCL
2180 platforms. (thanks to James Bielman and NIIMI Satoshi)
2181 * new feature: a generational or ephemeral garbage collector is now
2182 the default on the PowerPC platform (both Linux and Darwin). The
2183 old Cheney (stop and copy) collector is a build-time option.
2184 (thanks to Cyrus Harmon, after Raymond Toy)
2185 * minor incompatible change: the method by which SBCL finds its
2186 contributed modules has changed; it no longer relies on symbolic
2187 links from an $SBCL_HOME/systems directory, but searches directly
2188 in the subdirectories of $SBCL_HOME.
2189 * enhancement: the dynamic heap size on the Linux/PPC platform is
2190 markedly larger, even using the older Cheney garbage collector.
2191 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2192 certain complicated string types. (reported by Gary King)
2193 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2194 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2195 * fixed bug: DOCUMENTATION on structures no longer signals an
2196 error if no structure type of the right name exists. (reported by
2198 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2199 applicable non-standard primary or :AROUND method on
2200 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2201 no longer cause unbound variable errors. (reported by Kevin Reid)
2202 * fixed bug: metacircle resolution in cases where methods have slots
2203 added before the slots from STANDARD-METHOD. (reported by Jean
2205 * fixed bug: the Power PC assembly code for calling into lisp
2206 sometimes computed its return address wrongly (depending on the
2207 15th bit of the address, fixed at link time). This used to
2208 manifest itself in a segmentation violation while building PCL.
2209 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2210 many others over the years)
2211 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2212 the stack pointer (treated as a signed integer) is negative.
2213 (thanks to Peter van Eynde)
2215 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2216 * new platform: experimental support for the Windows operating
2217 system has been added. (thanks to Alastair Bridgewater)
2218 * fixed several bugs in and robustified the PPC FFI (including
2219 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2220 * bug fix: allow non-simple string symbol names (reported by Paul
2222 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2224 * bug fix: saving a core corrupted callbacks on x86/x86-64
2225 * bug fix: closed a loophole in metacircularity detection and
2226 grounding in the PCL implementation of CLOS.
2227 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2228 (reported by tomppa on #lisp)
2229 * bug fix: clear the direction flag on Lisp -> C transitions, as
2230 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2231 (reported by Andrej Grozin and Hendrik Maryns)
2232 * optimization: major improvements to GC efficiency on GENCGC platforms
2233 * optimization: faster implementation of EQUAL
2234 * optimization: emit more efficient opcodes for some common
2235 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2236 * optimization: several other minor code-generation improvements on x86-64
2237 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2239 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2240 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2241 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2242 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2243 by ANSI as a generic function, and for consistency (SETF
2244 GENERIC-FUNCTION-NAME) is treated likewise.
2245 * fixed bug #233.b: make constraint propagation notice when a variable
2246 value is changed after it is referenced but before it is used
2247 * fixed bug #296: no more arbitrary behaviour from filenames with
2248 odd characters as --load arguments. (reported by Adam Warner)
2249 * fixed bug #390: :CHARACTER-SET pathname components now work as
2250 expected. (reported by Tim Daly Jr)
2251 * fixed bug #391: complicated :TYPE intersections in slot
2252 definitions no longer cause an error in PCL internals.
2253 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2254 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2255 returning the number of octets which would be written to the
2256 file-stream. (thanks to Robert J. Macomber)
2257 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2258 arguments to the internal stream functions. (thanks to David
2260 * bug fix: stack exhaustion is now handled on the x86/SunOS
2261 platform. (thanks to Daisuke Homma)
2262 * bug fix: more accurate ROOM results on GENCGC platforms
2263 * optimization: improved type inference for arithmetic-for
2264 index variables in LOOP
2265 * optimization: faster floating-point SQRT on x86-64
2266 * fixed some bugs revealed by Paul Dietz' test suite:
2267 ** DOCUMENTATION returns NIL instead of "" for method combinations
2268 that don't have a docstring
2270 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2271 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2272 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2273 therefore are not customizeable by user code (as seems to be at
2274 least permitted and maybe required by AMOP). As a consolation,
2275 however, the SBCL implementation of these functions now calls
2276 REINITIALIZE-INSTANCE as specified by AMOP.
2277 * bug fix: slot-definition documentation is propagated as per ANSI
2278 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2279 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2280 argument, as do eslotd initialization methods. (from Pascal
2281 Costanza's "Closer" project)
2282 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2283 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2285 * bug fix: it is now possible to have more than one subclass of
2286 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2287 (reported by Bruno Haible, Pascal Costanza and others)
2288 * bug fix: the dependent update protocol now works for generic
2289 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2290 and Pascal Costanza)
2291 * bug fix: condition-class instances corresponding to
2292 DEFINE-CONDITION forms are now created eagerly. (reported by
2293 Kalle Olavi Niemitalo on comp.lang.lisp)
2294 * bug fix: floating point printing is more accurate in some
2295 circumstances. (thanks to Simon Alexander)
2296 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2297 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2298 * bug fix: callbacks on OS X now preserve stack-alignment.
2299 (thanks to Cyrus Harmon)
2300 * enhancement: the x86-64 disassembler is much better at
2301 disassembling SSE instructions. (thanks to Lutz Euler)
2302 * enhancement: CHECK-TYPE on a variable now allows type-inference
2303 (thanks to Vincent Arkesteijn)
2304 * optimization: improved performance of EUC-JP external format.
2305 (thanks to NIIMI Satoshi)
2306 * optimization: performance improvements to IO on file streams of
2307 :ELEMENT-TYPE CHARACTER
2308 * optimization: much faster memory allocation on x86-64
2309 * optimization: faster garbage collections (latency and throughput)
2311 * optimization: faster bignum subtraction and division on x86 and x86-64
2312 (thanks to Lutz Euler)
2313 * optimization: more accurate type-inference for loops that use a
2314 floating point index variable or a negative step.
2316 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2317 * bug fix: add a workaround to SBCL looping infinitely at startup on
2318 Linux kernels with apparently buggy implementations of personality().
2319 (thanks to Svein Ove Aas)
2320 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2321 (thanks to David Lichteblau)
2322 * bug fix: local bindings shadow global symbol macros for
2323 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2324 * optimization: non-open coded uses of numeric comparison operators
2325 (e.g. >) no longer cons when called with more than one parameter
2326 on platforms supporting dynamic-extent allocation.
2327 * enhancement: saving cores with foreign code loaded is now supported
2328 on MIPS/Linux in addition to the previously supported platforms.
2329 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2330 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2331 * bug fix: division by zero in sb-sprof when no samples were collected
2332 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2333 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2334 (thanks to Alexander Kjeldaas)
2335 * new feature: ignoring the return values of destructive functions
2336 like NREVERSE signals a compile-time style-warning.
2337 (thanks to Kevin Reid)
2338 * new feature: the alignment of alien structure fields can be
2339 explicitly specified. (thanks to Cyrus Harmon)
2340 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2341 and dump core on SIGQUIT
2343 ** incompatible change: threads do not inherit values of specials
2344 from their parents (see manual)
2345 ** bug fix: threads stacks belonging to dead threads are freed by the
2346 next exiting thread, no need to gc to collect thread stacks anymore
2347 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2348 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2349 ** bug fix: dynamic variable and thread start related gc lossage
2350 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2352 * fixed some bugs revealed by Paul Dietz' test suite:
2353 ** SUBTYPEP is slightly more accurate on heinously complicated
2354 CONS types where some of the members have uncertain (in the
2355 NIL, NIL sense) type relationships to each other.
2357 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2358 no longer purified unless :PURIFY T is explicitly specified.
2359 ** Non-purified cores are significantly smaller than before
2361 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2362 * new feature: timers based on Zach Beane's excellent timer package
2363 * added support for the following external formats: koi8-u,
2364 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2365 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2366 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2367 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2368 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2369 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2370 * incompatible change: a threaded SBCL will no longer revert to
2371 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2372 * bug fix: interrupts are disabled until startup is complete; no
2373 more sigsegvs when receiving a signal to soon
2374 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2376 * bug fix: add a workaround for the memory randomization features in
2377 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2378 workaround will only be in effect on systems with the proc filesystem
2380 * bug fix: printing objects of type HASH-TABLE signals a
2381 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2383 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2384 have been running for over 50 days. (reported by Gilbert Baumann)
2385 * bug fix: the logic for getting names of functions gets less
2386 confused when confronded with alternate-metaclass
2387 funcallable-instances. (reported by Cyrus Harmon)
2388 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2389 consistent, even on internal alternate-metaclass objects.
2390 * bug fix: flush closure information collected by physical
2391 environment analysis prepass before the main pass. (bug reported
2393 * bug fix: compiler pack phase does not modify a hashtable, which is
2394 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2395 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2396 may be expanded. (reported by Alexander <malishev> on c.l.l)
2397 * bug fix: no more style-warnings when compiling code using LAST
2398 under high-SPEED low-SPACE settings. (reported by David Wallin
2400 * fixed some incompatibilities between SBCL's MOP and the MOP
2402 ** the METAOBJECT class is now implemented;
2403 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2404 STANDARD-OBJECT, as required;
2405 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2406 now compatible (as required by VALIDATE-SUPERCLASS); there
2407 remains a consistency requirement over the presence or absence
2408 of the FUNCTION class in the superclass list of finalized
2409 classes; see the manual for more details;
2410 ** the :AROUND method for COMPUTE-SLOTS on
2411 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2412 requested slot ordering.
2414 ** bug fix: parent thread now can be gc'ed even with a live
2416 ** bug fix: binding a special with PROGV to no value is not
2417 the same as that symbol not having been bound (thanks to
2419 ** bug fix: binding specials is thread safe (thanks to
2421 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2422 and SB-SPROF do not die with 'no handler for signal XX in
2423 interrupt_handle_now(..)' anymore
2424 ** bug fix: WITH-TIMEOUT works with multiple running threads
2425 * fixed some bugs revealed by Paul Dietz' test suite:
2426 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2427 the :method-class keyword argument.
2429 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2430 * new port: the Solaris operating system on x86 processors is now
2431 mostly supported, though some rough edges in the environment
2432 remain. (thanks to Daisuke Homma)
2433 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2434 space for its heap. (thanks to Thiemo Seufer)
2435 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2436 closures. (thanks to Thiemo Seufer)
2437 * minor incompatible change: eof selects abort in the debugger.
2438 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2439 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2441 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2442 deprecated, and will go away in a future revision of SBCL.
2443 * minor incompatible change: GC-ON and GC-OFF are no longer
2444 implemented with a counter, it does not matter how many times gc
2445 is switched on or off
2446 * bug fix: discriminating functions for generic function classes
2447 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2448 make invalid assumptions about method precedence order. (reported
2450 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2451 platforms. (thanks to Thiemo Seufer)
2452 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2453 * bug fix: correct pathname printing with printer escaping is on.
2454 (thanks to Kevin Reid)
2455 * bug fix: complex VOP definitions in "user-space" no longer trigger
2456 package locks. (reported by Zach Beane)
2457 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2458 for funcallable-instance functions, and is no different from
2460 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2461 characters in the current readtable. (reported by Nicholas Neuss)
2462 * bug fix: SUBTYPEP on various CONS types returns more a more
2463 accurate acknowledgment of its certainty.
2464 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2465 lists in some cases. This partially fixes bug 384.
2466 * flush all standard streams before prompting in the REPL and the
2468 * bug fix: signal handling and triggering gc do not conflict
2469 directly anymore, in particular a high frequency sb-sprof does
2470 not prevent gc from running
2471 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2472 approximation for timezone and DST information between the
2473 universal time epoch and the smallest negative 32-bit time_t.
2474 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2475 year 1899 so long as the encoded time is non-negative.
2476 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2477 the correct answer for non-constant rotate amounts when performing
2478 an inline 32-bit rotation.
2480 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2481 there is only one thread in the session
2482 ** bug fix: memory leak for streams created in one thread and
2483 written to in another
2484 ** bug fix: lockup when compiled with gcc4
2485 ** bug fix: race that allows the gc to be triggered when gc is
2487 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2488 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2490 ** bug fix: finished threads are gc'ed properly
2491 * fixed some bugs revealed by Paul Dietz' test suite:
2492 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2493 has arguments with a different set of applicable methods from
2494 the orignal arguments.
2495 ** The type error thrown by MAP now has a correct expected-type
2497 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2498 name a compiled function.
2499 ** Three MISC tests where a large bignum was improperly coerced to
2500 a float that couldn't represent that bignum during type
2501 derivation were fixed.
2502 ** SUBTYPEP can now handle types involving the negation of a
2503 list-form FUNCTION type.
2504 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2505 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2506 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2508 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2509 * New feature: Experimental support for bivalent streams: streams
2510 opened with :element-type :default now allow character and binary
2511 (unsigned-byte 8) I/O
2512 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2513 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2515 * bug fix: no more highly sporadic "couldn't check whether ~S is
2516 readable" when reading a stream and an interrupt hits in the middle
2517 of a select system call
2518 * compiler better recognizes complex arrays (reported by Eduardo
2520 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2521 for variables on SBCL built with linkage-tables. (reported by Luis
2523 * various error reporting improvements.
2524 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2525 (Thanks to Thiemo Seufer)
2526 * bug fix: nested reader invokations work correctly
2527 * bug fix: it is possible to have simultaneous references to foreign
2528 code and foreign data with the same name.
2530 ** added x86-64 support
2531 ** incompatible change: the threading api now works with thread
2532 objects instead of thread ids
2533 ** bug fix: threads are protected from signals and interruption when
2534 starting up or going down
2535 ** bug fix: a race where an exiting thread could lose its stack to gc
2536 ** bug fix: don't halt on infinite error in threads if possible
2537 ** fixed numerous gc deadlocks introduced in the pthread merge
2538 ** bug fix: fixed thread safety issues in read and print
2539 ** bug fix: debugger doesn't hang on session lock if interrupted at
2540 an inappropriate moment
2541 ** bug fix: run-program is now thread safe(r)
2542 ** bug fix: inner with-recursive-lock no longer releases the mutex
2543 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2544 * fixed some bugs revealed by Paul Dietz' test suite:
2545 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2546 EXPECTED-TYPE slots filled.
2547 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2549 ** MAKE-CONDITION accepts classes as type-designators.
2550 ** COMPILE may never return NIL.
2551 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2552 range before calling Unix time functions
2554 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2555 * numerous signal handling fixes to increase stability
2556 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2557 * minor incompatible change: we now correctly canonize default
2558 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2559 as per the MOP, rather than the historical (INITARG INITFUNCTION
2560 INITFORM). (reported by Bruno Haible)
2561 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2562 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2563 for more information.
2564 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2565 pathname is a directory pathname.
2566 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2567 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2569 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2570 :METACLASS argument in addition to a class name. (reported by
2571 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2572 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2573 (reported by Bruno Haible; patch from Gerd Moellmann)
2574 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2576 * bug fix: more cleanups to the floating point exception handling on
2577 x86-64 (thanks to James Knight)
2578 * bug fix: the compiler does not try to constant fold calls of
2579 COERCE and BIT-* functions when they return freshly constructed
2580 objects. (reported by Nikodemus Siivola and Paul Dietz)
2581 * optimization: improved the MIPS versions of generic (in the
2582 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2583 * optimization: direct conversion of (unsigned-byte 32) to floats on
2584 the PowerPC platform.
2585 * optimization: structure instances with raw slots now use less
2586 memory, and probably show better memory locality. (thanks to
2588 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2589 are treated as requests for stack allocation on the x86-64,
2590 Alpha-32, PPC and SPARC platforms.
2591 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2592 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2593 (thanks to Tony Martinez)
2595 ** gcing a dead thread can no longer lead to lockups
2596 ** threads block signals until they are set up properly
2597 ** errno is no longer shared by threads
2598 ** interrupt-thread restores the eflags register on x86
2599 ** fixed some lockups due to gc/thread interaction
2600 * fixed some bugs revealed by Paul Dietz' test suite:
2601 ** invalid dotted lists no longer raise a read error when
2602 *READ-SUPPRESS* is T
2603 ** signal an error if a symbol that names a declaration is used
2604 as the name of a type, or vice versa
2605 ** allow using the (declare (typespec var*)) abbreviation for
2606 (declare (type typespec var*)) with all type specifiers
2607 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2608 ** always return NIL from PPRINT-POP when OBJECT is NIL
2609 ** don't signal errors when pretty-printing malformed LABELS,
2610 FLET or MACROLET forms
2611 ** declarations in a DOLIST body are also in scope for the
2613 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2615 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2618 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2619 * fixed cross-compiler leakages that prevented building a 32-bit
2620 target with a 64-bit host compiler.
2621 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2622 opened with :IF-EXISTS :OVERWRITE.
2623 * fixed bug 281: error for an invalid qualifier in a short-form method
2624 combination method is not signalled until the faulty method is called.
2625 * bug fix: iteration variable type inferrer failed to deal with open
2626 intervals. (reported by Alan Shields)
2627 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2628 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2629 or more runtime options were provided to the sbcl binary.
2630 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2631 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2632 * optimization: there's now a fast-path for fixnum arguments in the
2633 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2634 * optimization: the code generated on x86-64 is more compact thanks
2635 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2636 * bug fix: floating-point exception handling now partly works on
2637 x86-64. (Thanks to James Knight)
2638 * improvement to the MIPS backend from Thiemo Seufer: C-style
2639 64-bit long long arguments and return values to alien functions
2641 * fixed some bugs revealed by Paul Dietz' test suite:
2642 ** the type-error signalled from WARN has a filled-in DATUM slot.
2643 ** the type-error required when a stream is not associated with
2644 a file has the stream as its datum.
2645 ** type-errors on single-floats on x86-64 no longer have
2646 :INVALID-OBJECT as the datum
2647 ** the type-errors signalled for invalid function names now have
2648 a correct expected type
2649 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2650 for structures defined with a :TYPE. Documentation strings for
2651 typed structures are no longer immediately discarded
2652 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2653 broadcast streams and synonym streams. FILE-LENGTH now also works
2654 on broadcast streams.
2656 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2657 * incompatible change: the --noprogrammer option, deprecated since
2658 version 0.7.5, has been removed. Please use the equivalent
2659 --disable-debugger option instead.
2660 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2662 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2663 inoperational for a while now) has been completely removed.
2664 * null lexical environments are now printed as #<NULL-LEXENV>,
2665 significantly reducing the amount of clutter in typical backtraces.
2666 * documentation on weak pointers, finalization, and after GC hooks
2667 has been added to the manual.
2668 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2669 as other specialized array types, is much faster. SUBSEQ and
2670 COPY-SEQ on such arrays have also been sped up.
2671 * optimization: EQL is now more efficient when at least other argument
2672 is known to be of type (OR FIXNUM (NOT NUMBER)).
2673 * fixed bug: the runtime is now less vulnerable to changes in the
2674 size of the SBCL object on OS X, and virtual memory is reserved for
2675 all spaces that need to be at a fixed address.
2676 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2677 * fixed bug: finalizers and after GC hooks that cause consing are now
2679 * fixed bug: compiler error messages and summaries are now printed to
2680 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2681 * fixed inference of the upper bound of an iteration variable.
2682 (reported by Rajat Datta).
2683 * fixed bug 211e: calling local functions with duplicated constant
2684 keyword argument no longer causes a bogus style warning about an
2686 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2687 ftype declaration to be disregarded. (reported by Dave Roberts)
2688 * fixed bug 373: caused by erronous compilation of references to alien
2689 variables in the runtime on ppc/darwin.
2690 * fixed bug 376: CONJUGATE type deriver.
2691 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2692 (reported by Baughn on #lisp)
2693 * a cross-compiler bug on non-x86 platforms has been identified and
2694 fixed. (thanks to Bruno Haible)
2695 * improvements to the MIPS runtime code for increased stability.
2696 (thanks to Thiemo Seufer)
2697 * increased the maximimum compact environment size to allow
2698 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2699 * partial workaround for bug 135: don't name the function we're
2700 calling for hairy cases of EVAL, so as not to accumulate one environment
2701 entry per call to EVAL. (reported by Kevin Reid)
2702 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2703 * optimization: type testing for non-vector arrays should be faster.
2704 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2706 * bug fix: setting 31st element of a bit vector to zero did not work
2708 * bug fix: redefining a class definition which failed due to a
2709 previous accessor / function clash now works (but see BUGS entry
2710 #380 for more problems in this area). (thanks to Zach Beane)
2711 * the long form of DEFINE-METHOD-COMBINATION disables method group
2712 checking when given a single method group with pattern *. (thanks
2714 * on x86 compiler supports stack allocation of results of simple
2715 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2716 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2717 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2718 * fixed some bugs related to Unicode integration:
2719 ** the restarts for recovering from input and output encoding
2720 errors only appear when there is in fact such an error to
2722 * fixed some bugs revealed by Paul Dietz' test suite:
2723 ** MISC.549 and similar: late transformation of unsafe type
2724 assertions into derived types caused unexpected code
2726 ** SCALE-FLOAT type deriver is less wrong.
2727 ** type derivers for EXP, LOG and similar functions compute result
2728 types for complex arguments better.
2729 ** (MISC.563) CONJUGATE type deriver works for very restricted
2731 ** out-of-line type testers for character strings are available.
2732 ** EQUAL compiler transform understands specialness of objects
2734 ** accessing double-floats stored on the stack now works on x86-64.
2735 ** debugger internals could sometimes create invalid lispobjs,
2736 resulting in GC crashes.
2737 ** MISC.548: type check weakening can convert required type into
2739 ** initialization forms for bindings are not in scope of free special
2742 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2743 * incompatible change: thread support for non-NPTL systems has
2744 been removed - locking is buggy and unreliable. A threaded
2745 SBCL build will now warn at startup and refuse to create
2746 new threads, unless futex support is detected in the kernel
2747 * incompatible change: the top level REPL now has only an ABORT
2748 restart associated with it, not TOPLEVEL and ABORT as it used to.
2749 TOP and TOPLEVEL are now available as debugger commands for
2750 returning to the top level.
2751 * incompatible change: forms evaluated in the REPL now use the
2752 global optimization policy.
2753 * incompatible change: user- and system-initialization files are
2754 no longer processed with LOAD, but by READ and EVAL; hence the
2755 global optimization policy, startup package, readtable, etc,
2757 * The .fasl file format number has been incremented because of
2758 various incompatible changes.
2759 * internal entry point details and argument counts no longer appear
2760 in backtraces unless explicitly requested by setting
2761 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2762 * built-in and standard functions no longer have names like "top
2763 level local call to FOO".
2764 * fixed bug 32: functions defined in non-null lexical environments
2765 now have more legible printed representation
2766 * fixed bug 33: functions defined in non-null lexical environemnts
2767 are now more amenable to inspection by INSPECT.
2768 * workaround for bug 354: XEPs no longer appear in backtraces unless
2769 explicitly requested.
2770 * fixed bug: receiving the signal which results from attempting to
2771 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2772 SIGBUS on other *BSDs) on architectures where the C stack is also
2773 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2774 to debugger confusion or wild instability. (reported by Cheuksan
2776 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2777 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2778 (reported by Lutz Euler)
2779 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2780 compiled code. (reported by Paul Dietz)
2781 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2782 specialized parameter to a method to something that is not TYPEP
2783 the specializer is now possible.
2784 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2785 face of package deletion.
2786 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2787 pathname. (reported by David Tolpin on c.l.l)
2788 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2789 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2790 STRING-STREAM and FILE-STREAM, respectively.
2791 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2792 than previously; in addition, its test suite is now run on build.
2793 (thanks to Luke Gorrie)
2794 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2795 * optimization: added a immediate representation for single-floats
2797 * fixed some bugs revealed by Paul Dietz' test suite:
2798 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2799 ** attempting to create a package with a colliding nickname causes
2800 correctable errors to be signalled.
2801 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2802 ** several x86-64 backend bugs related to sign-extension of immediate
2805 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2806 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2807 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2809 * fixed loading of multiply forward-referenced layouts.
2810 (thanks to Cheuksan Wang)
2811 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2812 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2813 (see COMPILE-FILE documentation for details of :PRINT option)
2814 * fixed bugs 19 and 317: fixed-format floating point printing is
2815 more accurate. This also fixes a bug reported by Adam Warner
2816 related to the ~@F format directive.
2817 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2819 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2820 dispatch table if the from-char is a dispatch macro character.
2821 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2822 by the wordsize no longer ignore the last word. (reported by Lutz
2824 * fixed bug in type checking of dynamic-extent variables. (reported
2826 * optimization: sequence traversal functions use their freedom to
2827 coerce function designators to functions.
2828 * optimization: code with many calls to CLOS methods specialized on
2829 CLOS classes has had redundant type checks removed.
2830 * optimization: added declarations to speed up operations that access
2831 the internal character database (for example STRING-UPCASE)
2832 * optimization: comparison operations between floats and sufficiently small
2833 fixnums no longer create extra rationals
2834 * fixed some bugs related to Unicode integration:
2835 ** portions of multibyte characters at the end of buffers for
2836 character-based file input are correctly transferred to the
2837 start of the buffer at the next read.
2838 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2839 passing it through to OPEN.
2840 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2841 argument given to internal calls to OPEN.
2842 ** the built-in comment readers (introduced by character sequences
2843 ";" and "#|") are more forgiving to encoding errors; they will
2844 STYLE-WARN and then attempt to resync the stream at a character
2845 boundary. (thanks to Teemu Kalvas)
2846 * fixed some bugs in the x86-64 port:
2847 ** Negative short int return values from c-calls are sign-extended
2849 ** The stack is aligned to 16-bytes for c-calls, as required by
2850 the ABI. (thanks to Cheuksan Wang)
2851 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2852 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2853 for enums. (thanks to Vincent Arkesteijn)
2854 ** Multiple small optimizations and bugfixes for floating point
2856 * fixed some bugs revealed by Paul Dietz' test suite:
2857 ** Space, Tab, Linefeed, Return and Page have the invalid
2858 secondary constituent character trait.
2859 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2861 ** WITH-INPUT-FROM-STRING should only update the index place on
2863 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2864 works more reliably.
2865 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2866 with one-dimensional arrays with fill pointers.
2867 ** TYPE-OF failed on a complex with an integer realpart and a
2869 ** compiler failure during type inference for the code of form
2870 (IF (EQL X (THE ...)) ...) (MISC.535).
2872 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2873 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2874 platform. The port supports 61-bit fixnums, large memory spaces
2875 and reloading shared object files.
2876 * enhancement: saving cores with foreign code loaded is now
2877 supported on ppc/Darwin in addition to the previously supported
2879 * enhancement: the statistical profiler now walks deeper into the
2880 call stack for more meaningful call-graphs and accrued time
2881 reports (x86/x86-64 only). It also now reports time spent in
2883 * enhancement: it is now possible to trace most individual methods
2884 of a generic function in addition to tracing the generic function
2886 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2888 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2889 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2890 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2891 produces an error. (thanks to Vincent Arkesteijn)
2892 * bug fix: NAMESTRING on pathnames with :WILD components in their
2893 directories works correctly. (thanks to Artem V. Andreev)
2894 * fixed bug 125: compiler preserves identity of closures. (reported
2896 * bug fixed: functions with &REST arguments sometimes failed with
2897 "Undefined function" when compiled with (DEBUG 3). (reported by
2899 * bug fix: overflow during compiling of setting element of a bit
2900 vector with constant index and value. (reported by Timmy Douglas)
2901 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2902 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2903 * on x86 compiler partially supports stack allocation of dynamic-extent
2905 * GO and RETURN-FROM do not check the extent of their exit points
2906 when compiled with SAFETY 0.
2907 * fixed some bugs related to Unicode integration:
2908 ** encoding and decoding errors are now much more robustly
2909 handled; it should now be possible to recover even from invalid
2910 input or output to the terminal. (thanks to Teemu Kalvas)
2911 ** provided a first cut at implementing STRING-TO-OCTETS and
2912 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2913 ** altered the SB-MD5 contributed module slightly, changing the
2914 interface just enough for it to be supportable for builds where
2915 lisp characters are not eight bits.
2916 * fixed some bugs revealed by Paul Dietz' test suite:
2917 ** the FORMATTER-generated functions for ~V[ conditionals require
2918 the correct number of arguments.
2919 ** READ-FROM-STRING returns the mandated second value when applied
2920 to displaced strings.
2921 ** the #\Rubout and #\Backspace characters are treated as invalid
2922 constituent characters by the tokenizer.
2924 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2925 * new feature: reloading changed shared object files with
2926 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2927 * new feature: references to foreign variables and functions
2928 can now be compiled and loaded before the corresponding shared
2929 object file is loaded, as long as the foreign definitions are
2930 available at runtime.
2931 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2932 supported. (thanks to Dan Debertin)
2933 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2934 just keywords. (thanks to Vincent Arkesteijn)
2935 * fixed bug #331: structure-class instances corresponding to
2936 DEFSTRUCT forms are now created eagerly.
2937 * fixed bug #345: backtraces from calls to undefined functions work
2938 on x86 as well. Related bug #61 is now also partially fixed on x86
2939 (backtraces from throws to unknown catch tags.)
2940 * bug fix: lambda-list parsing is now stricter vrt. order and number
2941 of lambda-list keywords.
2942 * bug fix: as specified by AMOP, an error is signalled if a
2943 class-option appears multiple times in a DEFCLASS form. (reported
2945 * bug fix: RANDOM can be compiled when the compiler derives the type
2946 of its numeric argument as a disjoint set of small integers.
2947 (reported by Paul Dietz)
2948 * bug fix: starting a core saved with shared objects loaded when
2949 those objects are not available no longer causes threaded SBCL to
2950 hang. (reported by Sean Ross)
2951 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2953 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2954 argument, which must always be NIL. (reported by Kalle Niemitalo)
2955 * bug fix: printing 1.0d+23 no longer results in an error.
2956 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2957 * bug fix: structure slot setters preserve evaluation order. (thanks
2959 * fixed some bugs related to Unicode integration:
2960 ** RUN-PROGRAM can allow its child to take input from a Lisp
2961 stream. (reported by Stefan Scholl)
2962 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2963 locales. (reported by Ken Causey)
2964 * fixed some bugs revealed by Paul Dietz' test suite:
2965 ** INCF, DECF and REMF evaluate their place form as specified in
2967 ** FORMATTER expands ~{ ~} iteration directives with V or #
2968 parameters correctly.
2969 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2970 consequent uses no arguments correctly.
2971 ** the system has a partial understanding of the (COMPLEX RATIO)
2973 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2976 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2977 * new feature: a build-time option (controlled by the :SB-UNICODE
2978 keyword feature, enabled by default) for building the system with
2979 support for the entire 21-bit character space defined by the
2981 * new feature: the system now has rudimentary external-format
2982 support; the primary user-visible change at this time is that
2983 characters with the high bit set (such as lower-case-e-acute) will
2984 print correctly to a terminal in a UTF-8 environment.
2985 * minor incompatible change: BASE-CHAR no longer names a class;
2986 however, CHARACTER continues to do so, as required by ANSI.
2987 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2988 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2989 has been moved to the SB-EXT package (temporarily re-exported from
2991 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2992 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2994 * fixed bug #351: better error-handlind and reporting for malformed
2996 * fixed bug #350: bignum-printing is now more memory-efficient,
2997 allowing printing of very large bignums, eg. (expt 2 10000000).
2998 (reported by Bruno Haible)
2999 * fixed bug #302: better primitive-type selection for intersection
3001 * fixed bug #308: non-graphic characters now all have names, as
3002 required. (reported by Bruno Haible)
3003 * bug fix: redefining a class with different superclasses now correctly
3004 removes it from the direct-subclasses of its previous superclasses.
3005 (reported by David Morse)
3006 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3007 new value now works. (reported by Bruno Haible)
3008 * bug fix: correct canonicalization of multiple non-standard slot
3009 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3010 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3011 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3012 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3013 now exists, an signals an error.
3014 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3015 during macroexpansion for non-iteration variables as well. (reported
3016 by Bruno Haible for CMUCL)
3017 * bug fix: Cyclic structures and unprintable objects in compiler
3018 messages no longer cause errors. (reported by Bruno Haible)
3019 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3020 and READ-FROM-STRING all now return a primary value of NIL if
3021 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3022 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3023 (reported by Bruno Haible for CMUCL)
3024 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3025 do not designate a condition. (reported by Bruno Haible for
3027 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3028 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3029 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3030 permitting resolution in favour of any of the conflicting symbols.
3031 (reported by Bruno Haible for CMUCL)
3032 * bug fix: EQUAL compiler optimizations is less aggressive on
3033 strings which can potentially compare true despite having distinct
3034 specialized array element types.
3035 * bug fix: unit enumerations can be defined without dividing by
3036 zero. (thanks to Vincent Arkesteijn)
3037 * FORMAT compile-time argument count checking has been enhanced.
3038 (report from Bruno Haible for CMUCL)
3039 * a partial workaround for the bug 262: the compiler does not try to
3040 inline-expand a local function doing RETURN-FROM from a deleted
3041 BLOCK. (thanks to Peter Denno for the bug report and to David
3042 Wragg for the simple test case)
3043 * fixed some bugs revealed by Paul Dietz' test suite:
3044 ** RENAME-PACKAGE allows all package designators as new package
3046 ** constraint propagation and lambda variable substitution are
3047 more cautious in dealing with partially deleted code.
3048 ** compiler sometimes lost reoptimization passes.
3049 ** CERROR, given a condition as condition designator, passes its
3050 remaining arguments to the continue format control without
3052 ** Case-altering FORMAT directives work correctly on non-ASCII
3054 ** The REAL type specifier handles bounds outside the floating
3055 point ranges without signalling FLOATING-POINT-OVERFLOW.
3056 ** Functions with IR1-transformations can create intercomponent
3057 references to global functions.
3058 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3060 ** FORMAT ~R treats a nil value for its first parameter correctly.
3062 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3063 * enhancement: saving cores with foreign code loaded is now
3064 supported on x86/NetBSD and sparc/Linux in addition to the previously
3065 supported platforms.
3066 * bug fix: on some platforms repeated installations caused multiple
3067 copies of HTML documentation to be installed -- should not happen
3068 any more. (reported by Stefan Scholl)
3069 * bug fix: parsing self-recursive alien record types multiple times
3070 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3071 original patch by Helmut Eller for CMUCL)
3072 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3073 (thanks to Richard Kreuter)
3074 * bug fix: defining classes whose accessors are methods on existing
3075 generic functions in other (locked) packages no longer signals
3076 bogus package lock violations. (reported by François-René Rideau)
3077 * bug fix: special variables as DEFMETHOD parameters no longer have
3078 associated bogus type declarations. (reported by David Wragg and
3080 * bug fix: read-write consistency on streams of element-type
3081 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3082 * bug fix: redefiniton of the only method of a generic function with
3083 no DEFGENERIC no longer emits a full WARNING. In addition,
3084 redefinition of generic functions with no DEFGENERIC to an
3085 incompatible lambda list now signals an error. (thanks to Zach
3087 * bug fix: DEFGENERIC now works even when there's a function of the
3088 same name in an enclosing lexical environment. (thanks to Zach
3090 * fixed compiler failure, caused by instrumenting code during
3091 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3092 * optimization: added loop analysis and improved register allocation
3093 * fixed some bugs revealed by Paul Dietz' test suite:
3094 ** POSITION on displaced vectors with non-zero displacement
3095 returns the right answer.
3096 ** (SIMPLE-STRING) is a valid type specifier for sequence
3098 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3100 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3101 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3103 ** The justification version of the FORMAT ~< directive treats
3104 non-zero minpad parameter correctly.
3106 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3107 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3108 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3109 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3110 the supported interface.
3111 * new feature: Single-stepping of code compiled with DEBUG 2 or
3112 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3113 * new feature: saving cores with foreign code loaded is now
3114 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3115 Timothy Moore's work for CMUCL)
3116 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3117 parameters to * instead of NIL if no initform is supplied.
3118 (reported by Johan Bockgaard)
3119 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3120 correctly when FUNCALL appears as the car of the form. Note:
3121 despite this FUNCALL forms are not currently subject to
3122 compiler-macro expansion. (port of Raymond Toy's fix for the
3123 same from CMUCL, reported by Johan Bockgaard)
3124 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3125 (thanks for Teemu Kalvas)
3126 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3127 case instead of terminating the iteration (thanks for Julian
3128 Squires, Sean Champ and Raymond Toy)
3129 * bug fix: incorrect expansion of defgeneric that caused a style
3130 warning. (thanks for Zach Beane)
3131 * bug fix: slot accessor effective method computation works properly
3132 for classes with multiple non-standard applicable methods on
3133 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3134 * on x86 compiler supports stack allocation of results of LIST and
3135 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3136 CMUCL implementation by Gerd Moellmann)
3137 * fixed some bugs revealed by Paul Dietz' test suite:
3138 ** FORMAT strings with both the ~<~:;~> form of the justification
3139 directive and pretty-printing directives cause an error.
3141 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3142 * incompatible change: the internal functions
3143 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3144 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3145 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3146 instead of the old functions.
3147 * new feature: on platforms where "dladdr" is available foreign
3148 function names now appear in backtraces. (based on Helmut Eller's
3150 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3151 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3153 * documentation: ASDF manual is now distributed with SBCL.
3154 * bug fix: SBCL can now load its contributed modules with REQUIRE
3155 even if the system-provided entries have been removed from
3156 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3158 * bug fix: backtraces involving undefined functions or assembly
3159 routines are more informative. (thanks to Brian Downing)
3160 * bug fix: mutually referent alien structures now work correctly.
3161 (reported by Rick Taube)
3162 * bug fix: structures defined by WITH-ALIEN can be referred to
3163 within other definitions in the same WITH-ALIEN.
3164 * bug fix: division operators (MOD, TRUNCATE and the like) with
3165 constant zero divisors and integer dividends no longer generate
3167 * bug fix: provide default methods for INPUT-STREAM-P and
3168 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3169 * bug fix: improve the detection and resolution of MOP metacycles
3170 (where effective method computation depends on the generic function
3171 having its effective method computed). (reported by Bruno Haible)
3172 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3173 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3174 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3175 * bug fix: pathnames with relative directory components can be
3176 represented relative to default pathnames.
3177 * optimization: in taking the GCD of bignums, reduce the two bignums
3178 to approximately the same size (using Euclid's algorithm) before
3179 applying the more sophisticated binary GCD. (thanks to Juho
3181 * optimization: COUNT on bitvectors now operates word-at-a-time.
3182 * optimization: ASH with a positive, but not necessarily constant,
3183 (leftwards) shift, when in a modular context, is compiled to a
3185 * fixed some bugs revealed by Paul Dietz' test suite:
3186 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3187 if the corresponding argument is NIL.
3188 ** FORMAT directives accepting a minpad parameter treat negative
3190 ** literal commas as character parameters to FORMAT directives are
3192 ** literal spaces directly after ~<Newline> directives within a
3193 format-logical-block (~:< ~@:>) do not induce :FILL-style
3194 conditional newlines.
3195 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3196 as specified: it no longer includes conditional newlines).
3197 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3199 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3200 :PER-LINE-PREFIX argument does not evaluate to a string.
3202 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3203 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3204 the manual for details; for now, package locks can be disabled by
3205 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3206 if no major problems are found then it is likely that they will be
3207 compiled in unconditionally.
3208 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3209 unsupported operators on all platforms. To load a shared library
3210 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3211 object file, link it into a shared library outside of SBCL and
3212 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3214 * bug workaround: ROOM T and the GC were not working together
3215 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3216 reporting facility aren't preserved. That reporting has been
3217 disabled, so now until and unless someone figures out how to make it
3218 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3219 * minor incompatible change: as threatened around sbcl-0.8.0, the
3220 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3221 The symbols are also exported from SB-PCL for backwards
3222 compatibility, but more so than before SB-PCL should be treated as
3223 an implementation-internal package.
3224 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3226 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3227 It is known as of this release not to work on the Alpha, however.
3228 * fixed bug #167: errors signalled due to illegal syntax in method
3229 bodies are now more legible.
3230 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3231 designators and can hence be used with TYPEP.
3232 * fixed bug #333: CHECK-TYPE now ensures that the type error
3233 signalled, if any, has the right object to be accessed by
3234 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3235 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3236 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3238 * fixed bug #334: programmatic addition of slots using specialized
3239 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3240 and :ALLOCATION :CLASS slots.
3241 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3242 float exponents. (rereported by Peter Seibel)
3243 * fixed a bug: #\Space (and other whitespace characters) are no
3244 longer considered to be macro characters in standard syntax by
3245 GET-MACRO-CHARACTER.
3246 * fixed bug: initialization of condition class metaobjects no longer
3247 causes an instance of the condition to be created. (reported by
3249 * fixed bug: it is now possible to have slots such that
3250 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3251 description is neither :INSTANCE nor :CLASS.
3252 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3253 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3254 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3255 non-standard SLOT-DEFINITION-ALLOCATION values.
3256 * fixed bugs: various race conditions handling exiting threads.
3257 CL-PPCRE's thread torture test now passes.
3258 * fixed arguably-a-bug: GC time proportional to number of threads in
3259 system even when most of them are idle
3260 * optimization: improved performance of BIT and SBIT on bit-vectors.
3261 * .fasl file incompatibility: The fasl file version number has
3262 been incremented because of changes associated with package locks.
3264 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3265 * minor incompatible change: the system no longer provides
3266 optimization hints (conditions which are TYPEP
3267 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3268 mode; these hints are still emitted when higher SPEED optimization
3270 * new contrib module: a sampling profiler (profiling by statistical
3271 sampling, rather than by instrumenting functions) is available as
3272 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3273 * the behaviour of the standard function ED is now customizeable by
3274 third parties through a hook variable: see ED's documentation
3275 string for information on the protocol.
3276 * the compiler no longer emits efficiency notes for (FUNCALL X)
3277 when the type of X is uncertain under default optimization
3279 * fixed bug 276: mutating a binding of a specialized parameter to a
3280 method to something that is not TYPEP the specializer is now
3282 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3283 exhibit the required behaviour on the x86 platform. (thanks to
3284 Peter van Eynde, Eric Marsden and Bruno Haible)
3285 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3286 even for difficult arguments. (reported by Peter Graves)
3287 * fixed bug 141a: the backquote printer now descends quoted
3289 * fixed another bug in backquote printing: no more destructive
3290 modification of the form's list structure. (reported by Brian
3292 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3293 move between its address being taken and the call to
3294 interrupt_thread, fixing a crashing race condition.
3295 * the SB-POSIX contrib implementation has been adjusted so that it
3296 no longer exhibits ridiculously poor performance when constructing
3297 instances corresponding to C structs.
3299 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3300 * minor incompatible change: the sb-grovel contrib now treats C
3301 structures as alien (in the sense of SB-ALIEN) objects rather than
3302 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3303 has implications for memory management of client code
3304 (sb-grovel-returned objects must now be manually managed) and for
3305 type safety (alien objects now have full types).
3306 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3307 used to control emission of compiler diagnostics, rather than the
3308 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3309 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3310 quality should be considered deprecated.
3311 * install.sh now installs the user manual as well
3312 * (not quite a new documentable feature, but worth considering in
3313 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3314 beginnings of a semantically meaningful condition hierarchy is
3315 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3317 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3318 designator as the defaults argument.
3319 * fixed bug: Displaced arrays whose displaced-to array has become
3320 too small now cause ARRAY-DIMENSION to signal an error, providing
3321 for safer bounds-checking. (reported by Bruno Haible)
3322 * fixed bug: DEFCLASS slot definitions with identical :READER and
3323 :WRITER names now signal a reasonable error. (reported by Thomas
3325 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3327 * fixed bug: Invalid slot specification errors now print correctly.
3328 (thanks to Zach Beane)
3329 * fixed bug 320: Shared to local slot value transfers in class
3330 redefinitions now happen corrently from superclasses as
3331 well. (reported by Bruno Haible)
3332 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3334 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3335 improper lists correctly. (reported by Bruno Haible)
3336 * fixed bug 313: source-transform for <fun-name> was erroneously
3337 applied to a call of a value of a variable with name <fun-name>.
3338 (reported by Antonio Menezes Leitao)
3339 * fixed bug 307: The obsolete instance protocol ensures that
3340 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3341 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3342 remove dead unknown-values globs from the middle of the stack.
3343 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3344 easier to resume long computations after using *BREAK-ON-SIGNALS*
3345 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3346 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3347 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3348 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3349 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3350 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3352 * fixed a (fairly theoretical) bug in string printing: if
3353 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3354 does not have array-element-type equal to the most general string
3356 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3357 function name. (thanks to Nikodemus Siivola)
3358 * fixed bug: compile-time format string checker failed on
3359 non-closed ~{. (reported by Thomas F Burdick)
3360 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3361 don't warn on legal loop code involving more than one aggregate
3362 boolean. (thanks to Nikodemus Siivola)
3363 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3364 in keyword position to MAKE-PACKAGE was not being reported as
3366 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3367 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3369 * fixed bugs 280 and 312: the checking for multiple definitions in a
3370 file is less likely to become confused by uses of inline
3372 * fixed bug: the #S reader macro performs the keyword coercion
3373 specified for slot names. (reported by Kalle Niemitalo)
3374 * fixed bug: lambda lists may contain symbols whose names start with
3375 & but are not lambda-list-keywords; their occurrence triggers a
3377 * fixed bug 321: define-method-combination argument lambda lists do
3378 not cause invalid code to be generated when &optional or &aux
3379 variables have default values. (reported by Bruno Haible)
3380 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3381 have CLOS classes; this appears also to have fixed reported
3382 instability in stack exhaustion detection.
3383 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3384 MUFFLE-WARNING when no associated restart is present is now
3386 * optimization: rearranged the expansion of various defining macros
3387 so that each expands into only one top-level form in a
3388 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3390 * optimization: used a previously little-used slot in symbols to
3391 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3393 * fixed some bugs revealed by Paul Dietz' test suite:
3394 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3396 ** Fixed an optimization bug related to inheritance of initforms
3397 from local to shared slots.
3398 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3399 ** CAST optimizer forgot to flush argument derived type.
3400 ** print/read consistency on floats is now orders of magnitude
3401 more likely. (thanks also to Bruno Haible for a similar report
3403 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3404 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3405 for objects of type REAL. Make it so.
3406 ** SXHASH is specified (infelicitously) to respect similarity,
3407 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3408 it so. (thanks to Markus Ziegler)
3409 ** on the Alpha, the compiler succeeds in compiling functions
3410 returning a known number of arguments greater than 63.
3411 ** fixed handling of invalid NIL arguments in keyword position
3413 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3415 ** provided a readably-printable representation for RANDOM-STATE
3417 ** ensured that pathnames, where they have a namestring, always
3418 print using #P"..." syntax.
3420 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3421 * Support for the forthcoming 2.0 version of the NetBSD kernel
3422 running on x86 hardware has been added. (thanks to Perry
3423 E. Metzger most immediately, and others for their past work)
3424 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3425 current release version; SBCL's OpenBSD support had been broken
3426 since about the time of OpenBSD's switch to ELF binary format.)
3427 * [placeholder for DX summary]
3428 ** user code with &REST lists declared dynamic-extent, under high
3429 speed or space and low safety and debug optimization policy.
3430 * The manual has been converted to Texinfo format and the debugger
3431 chapter from the cmucl manual has been added.
3432 * A facility has been added to extract documentation strings from
3433 sbcl and store them as Texinfo-formatted snippets for inclusion in
3434 the manual (via Texinfo's @include directive)
3435 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3436 the test case to Dave Roberts)
3437 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3438 pointers. (reported by Sean Ross)
3439 * bug fix: PROFILE output is printed nicely even for large numerical
3440 values. (thanks to Zach Beane)
3441 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3442 greater than 32 handle EOF correctly.
3443 * bug fix: on X86 an immediate argument of the IMUL instruction is
3444 correctly printed in disassembly. (thanks to Lutz Euler)
3445 * bug fix: class slots in redefined classes preserve their old
3446 values. (thanks to Bruno Haible and Nikodemus Siivola)
3447 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3448 succeeds. (reported by Marco Baringer)
3449 * fixed some bugs revealed by Paul Dietz' test suite:
3450 ** READ-SEQUENCE now works on ECHO-STREAMs.
3451 ** RATIONALIZE works more according to its specification. (thanks
3454 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3455 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3456 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3457 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3458 should matter to you only if you rebind the printer control
3459 variables and then find you want different bindings in the
3460 debugger than in the ordinary execution of your program.)
3461 * The runtime build system has been tweaked to support building
3462 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3463 assembler and linker. (thanks to Nikodemus Siivola)
3464 * Unbound, undefined, undeclared variables now trigger full
3465 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3466 more often programmer error than deliberate exploitation of undefined
3468 * optimization: the hash algorithm for strings has changed to one
3469 that is less vulnerable to spurious collisions. (thanks to Juho
3471 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3472 needless bounds checking. (thanks to Juho Snellman)
3473 * optimization: implemented multiplication as a modular
3474 (UNSIGNED-BYTE 32) operation on the PPC backend.
3475 * fixed some bugs revealed by Paul Dietz' test suite:
3476 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3478 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3479 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3480 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3482 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3484 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3486 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3487 their output stream on EOF from read.
3488 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3489 have been read to end-of-file.
3490 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3492 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3493 description of determination of which consecutive characters
3495 ** Printing the "Space" character with escaping on now yields "#\\ ",
3496 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3497 ** Reading floating-point numbers with *READ-BASE* set to a number
3498 less than 10 works correctly.
3499 ** Reading floating-point numbers with *READ-BASE* set to a number
3500 more than 10 works correctly.
3501 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3502 the readtable currently in effect.
3504 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3505 * minor incompatible change: parsing of namestrings on a physical
3506 (Unix) host has changed; numbers after the final #\. in a
3507 namestring are no longer interpreted as a version field. This is
3508 intented to be largely invisible to the user, except that the
3509 meaning of the namestring "*.*.*" has changed: it now refers to a
3510 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3511 should usually be replaced by
3512 (make-pathname :name :wild :type :wild :version :wild)
3513 with the added benefit that this is more likely to be portable.
3514 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3515 option to OPEN now signals an error if the file being opened
3516 exists; this may have an impact on existing code.
3517 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3518 signals received, on the PowerPC platforms (both Linux and
3519 Darwin). (thanks to Pierre Mai for pointing out the location of
3521 * several fixes on OS X: The system now builds and runs cleanly on
3522 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3523 (thanks to Brian Mastenbrook)
3524 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3525 second-resolution: integer multiples of 1/3600 between -24 and 24.
3526 (thanks to Vincent Arkesteijn)
3527 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3528 type when called with 1 argument; PEEK-CHAR checked type of
3529 PEEK-TYPE only after having read first character from a
3530 stream. (reported by Peter Graves)
3531 * bug fix: the garbage collector now has much better locality
3532 behaviour, and in particular no longer treats all memory as being
3533 exhausted when many small objects point to each other in a deeply
3535 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3536 recognized as being TYPEP their class.
3537 * bug fix: the PUSHNEW documentation string has been corrected.
3538 (thanks to Vincent Arkesteijn)
3539 * bug fix: defaulting of the value for the last of an atypically
3540 large number of multiple values being bound was not being
3541 performed correctly on the Alpha or PPC platforms
3542 * optimization: implemented multiplication as a modular
3543 (UNSIGNED-BYTE 32) operation on the x86 backend.
3544 * optimization: SEARCH on simple-base-strings can now be open-coded.
3545 (see also contrib/compiler-extras.lisp for inspiration for
3546 teaching the compiler about the Boyer-Moore algorithm).
3547 * value, returned by MAX (and MIN) called with several EQUALP, but
3548 not EQL, arguments now does not depend on compiler settings.
3549 * fixed some bugs revealed by Paul Dietz' test suite:
3550 ** in stack analysis liveness information is propagated from
3551 non-local entry points.
3552 ** pathwise CAST removing failed when the CAST node did not start
3554 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3555 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3557 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3558 host is already defined.
3559 ** RENAME-FILE works on streams instead of signalling an internal
3561 ** PEEK-CHAR uses the current readtable when determining whether
3562 or not a character is whitespace.
3563 ** MERGE-PATHNAMES handles the case when the pathname does not
3564 specify a name while the default-pathname specifies a version.
3565 ** Pathnames now stand a better chance of respecting print/read
3567 ** Attempting to use standardized file system operators with a
3568 pathname with invalid :DIRECTORY components signals a
3570 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3572 ** DIRECTORY on logical pathnames is more correct.
3573 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3574 signal a TYPE-ERROR if their argument is not a stream.
3575 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3576 designator argument does not designate a stream.
3577 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3578 examining the synonym.
3579 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3581 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3582 element-type larger than ([UN]SIGNED-BYTE 32).
3584 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3585 * When built with the :SB-FUTEX feature, threaded builds now take
3586 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3587 for faster/more reliable mutex and condition variable support.
3588 * Incompatible change (but one you probably shouldn't have been using
3589 anyway): the interface and code for arbitrating between multiple
3590 threads in the same user session has been redesigned.
3591 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3592 error when called without an explicit environment argument.
3593 (thanks to Nikodemus Siivola)
3594 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3595 confused about their position. (thanks to Adam Warner and Gerd
3597 * bug fix: Pretty printing backquoted forms with unquotations in the
3598 argument list position of various code constructs such as LAMBDA
3599 now works correctly. (reported by Paul Dietz)
3600 * bug fix: Pretty printing unquotations no longer loses all
3601 stream position information.
3602 * optimization: performance of string output streams is now less
3603 poor for multiple small sequence writes.
3604 * optimization: performance of CSUBTYPEP in the presence of complex
3605 expressions involving CONS and NOT many times has been improved.
3606 (reported by Paul Dietz)
3607 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3609 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3610 streams for the REPL, for the debugger, and so on. (thanks to
3612 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3613 * fixed some bugs revealed by Paul Dietz' test suite:
3614 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3615 is ignored if it is too small, rather than propagating through
3616 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3617 ** extremely complex negations of CONS types were not being
3618 sufficiently canonicalized, leading to inconsistencies in
3620 ** VALUES tranformer lost derived type.
3622 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3623 * fixed a bootstrapping bug: the build process no longer assumes
3624 that the various BOOLE-related constants have the same value in
3625 host and target lisps. (noted by Paul Dietz' test suite on an
3626 SBCL binary built from CLISP)
3627 * The system can now be dynamically linked on the MIPS platform,
3628 which enables dynamic loading of foreign code from Lisp. (thanks
3629 to Ralf Baechle for discussions on the MIPS ABI)
3630 * The system now records debugging information for its own source
3631 files in a filesystem-position-independent manner, relative to
3632 the "SYS" logical host.
3633 * fixed a compiler bug: MV-LET convertion did not check references
3634 to the "max args" entry point. (reported by Brian Downing)
3635 * tweaked disassembly notes to be less confident about proclaiming
3636 some instruction as an LRA. (thanks to Brian Downing)
3637 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3638 now each have their own history, command character, and other
3639 characteristics. (thanks to David Lichteblau)
3640 * fixed some bugs revealed by Paul Dietz' test suite:
3641 ** compiler failure in compiling LOGAND expressions including a
3643 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3644 shift greater than 32.
3645 ** FLUSH-DEST did not mark blocks for type check regeneration.
3646 ** HANDLER-CASE failed to accept declarations in handler clauses
3647 in some circumstances.
3649 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3650 * New code in contrib/sb-introspect (still probably not entirely
3651 stable yet) provides some support for smart Lisp development
3652 environments like SLIME.
3653 * The conditions signalled for errors occurring when loading .fasl
3654 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3655 in a way which should help ASDF recover gracefully.
3656 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3657 stuff has been cleaned up. If you code contrib/ stuff, this might
3658 affect you, and you can look at contrib/README, contrib/STANDARDS,
3659 and/or the 0.8.4.27 diff to check.
3660 * In full calls the compiler now does not generate checks for declared
3661 argument types for all arguments.
3662 * various threading fixes
3663 ** and some experimental patches which didn't make it into
3664 the main tree for this release, but which are shipped in
3665 contrib/experimental-thread.patch as a possible fix for some
3666 failures (deadlock, spinning...) in GC-intensive multithreaded
3668 * fixed PPC build problem (source code incompatibility of different
3669 library versions): added offsetof() hackery which attempts to divine
3670 where glibc maintainers put uc_mcontext today
3671 * fixed bug 282: compiler does not trust type assertions while passing
3672 arguments to a full call.
3673 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3674 &OPTIONAL VALUES type parameter.
3675 * fix bug 214: algorithm for noting rejected templates is now more
3676 similar to that of template seletion. (also reported by rydis on
3678 * fixed bug 141b: printing backquoted information readably and prettily
3679 inserts a space where necessary.
3680 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3681 (CHARACTER 10) are now reported as errors, rather than propagated
3682 as unknown types. (reported by piso on #lisp)
3683 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3684 with values NIL and :ERROR. (thanks to Milan Zamazal)
3685 * fixed bug 191c: CLOS now does proper keyword argument checking as
3686 described in CLHS 7.6.5 and 7.6.5.1.
3687 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3688 longer raise an error; further, using a list as a for-as-arithmetic
3689 counter now raises a meaningful error.
3690 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3691 now understood by sequence creation functions such as MAKE-SEQUENCE
3693 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3694 a STRING-INPUT-STREAM.
3695 * compiler enhancement: SIGNUM is now better able to derive the type
3697 * type declarations inside WITH-SLOTS are checked. (reported by
3699 * fixed some bugs revealed by Paul Dietz' test suite:
3700 ** incorrect optimization of TRUNCATE for a positive first
3701 argument and negative second.
3702 ** compiler failure in let-convertion during flushing dead code.
3703 ** compiler failure while deriving type of TRUNCATE on an
3704 interval, containing 0.
3705 ** ASH of a negative bignum by a negative bignum count now returns
3707 ** intersection of CONS types now canonicalizes properly, fixing
3708 inconsistencies in SUBTYPEP.
3710 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3711 * incompatible change: The --disable-debugger command line
3712 option now clobbers the debugger at a more fundamental
3713 level, by redefining #'INVOKE-DEBUGGER instead of by
3714 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3715 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3716 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3717 enter the debugger REPL and then suffer recursive errors
3718 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3719 while under the new system, BREAK in --disable-debugger mode
3720 terminates the system just as an unhandled error would.
3721 * fixed compiler performance when processing loops with a step >1;
3722 * bug fix: DOCUMENTATION now retrieves generic function
3723 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3724 support has been systematized, and now supports the methods
3725 specified by ANSI, along with a default method and a method for
3726 slot documentation. (reported by Nathan Froyd)
3727 * bug fix: effective methods associated with a generic function are
3728 no longer cached over a change of that generic function's method
3729 combination. (reported by Andreas Fuchs)
3730 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3731 names a non-existent directory. (thanks to Andreas Fuchs)
3732 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3733 the PPC platform, lead to stack corruption; this has been fixed.
3734 (reported by Rainer Joswig)
3735 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3736 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3737 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3738 arithmetic in general, is now much more reliable on the PPC
3740 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3741 platform now returns the right answer.
3742 * optimization: restored some effective method precomputation in
3743 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3744 precomputation is now tunable.
3745 * optimization: compiler-internal data structure use has been
3746 reviewed, and changes have been made that should improve the
3747 performance of the compiler by about 20%.
3748 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3749 simple-base-strings and simple-bit-vectors is improved.
3750 * optimization: the optimization of 32-bit logical and arithmetic
3751 functions introduced in version 0.8.3 on the x86 has been
3752 implemented on the mips, ppc and sparc platforms; an
3753 implementation of the same facility, but for 64-bit arithmetic,
3754 has been added for the alpha.
3755 * microoptimization: the compiler is better able to make use of the
3756 x86 LEA instruction for multiplication by constants.
3757 * bug fix: in some situations compiler did not report usage of
3758 generic arithmetic in (SPEED 3) policy.
3759 * bug 145b fix: compiler used wrong type specifier while converting
3760 MEMBER-types to numeric.
3761 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3763 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3764 index argument now works properly on the Alpha platform.
3765 * bug fix: floating point exception treatment on the Alpha platform
3767 * bug fix: FILE-POSITION works much better on string input and
3768 output streams. (thanks to Nikodemus Siivola)
3769 * bug fix: many threading/garbage collection symptoms sorted.
3770 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3771 might be pseudo-atomic.
3772 * internal change: Stopping for GC is now done with signals not
3773 ptrace. GC is now done in whichever thread wanted it, instead of
3775 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3777 * bug fix: result form in DO is not contained in the implicit
3779 * incompatible change: ICR structure is changed; the value part of
3780 CONTINUATION is now called LVAR; corresponding functions are
3781 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3782 * added type deriver for ISQRT (thanks to Robert E. Brown).
3783 * bug fix: better support for loading from the command line when an
3784 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3786 * fixed some bugs revealed by Paul Dietz' test suite:
3787 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3788 ** ROUND and FROUND now give the right answer when given very
3789 small float arguments.
3790 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3792 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3793 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3794 ** LCM should return a non-negative integer.
3795 ** PARSE-INTEGER returned the index of a terminator instead of the
3796 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3797 ** PARSE-INTEGER returned an incorrect index being applied to a
3799 ** LCM with two arguments of 0 returns 0 rather than signalling
3801 ** unsigned addition of a 32-bit constant with the high bit set no
3802 longer causes an internal compiler error on the x86.
3803 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3804 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3805 with negative last argument.
3806 ** byte specifiers with zero size and position no longer cause
3807 an error during type derivation.
3808 ** bignum multiplication on the Alpha platform now returns the
3810 * porting: The system now builds on SuSE AMD64, although it still
3811 generates a 32-bit binary.
3812 * .fasl file incompatibility: The fasl file version number has
3813 been incremented (because of the changes to internal compiler
3814 data structures referred to above).
3816 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3817 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3818 more accurately, on the Darwin kernel running on PowerPC hardware.
3819 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3820 * Compiler code deletion notes now signal a condition of type
3821 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3822 an associated MUFFLE-WARNING restart.
3823 * The compiler now performs limited argument count validation of
3824 constant format strings in FORMAT, and where appropriate in ERROR,
3825 CERROR and WARN. (thanks to Gerd Moellmann)
3826 * New ASDF-INSTALL contrib can be used for automatic download and
3827 installation of third-party Lisp code from CCLAN or other sites
3829 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3830 which forces another thread to execute a function supplied by the
3832 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3833 now accept and act upon their :ELEMENT-TYPE keyword argument.
3834 (reported by Martin Atzmueller, Edi Weitz)
3835 * bug fix: FILE-POSITION now accepts position designators up to
3836 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3837 is the greater. (thanks to Patrik Nordebo)
3838 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3839 Kalle Olavi Niemitalo)
3840 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3841 printable. (reported by Eric Marsden)
3842 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3843 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3844 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3845 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3846 (thanks to Stig Sandoe)
3847 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3848 UNREAD-CHAR now correctly includes the unread character in the
3849 target sequence. (thanks to Gerd Moellmann)
3850 * bug fix in threaded builds: the system can now be suspended and
3851 resumed by shell job control with minimal disruption.
3852 * bug fixes in times and timezones >2038AD
3853 * better handling of "where is GNU make?" problem in build scripts
3854 (thanks to Nikodemus Siivola)
3855 * new optimization: inside a named function any reference to a
3856 function with the same name is considered to be a self-reference;
3857 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3858 optimization quality.
3859 * new optimization on x86: logical functions and + now have
3860 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3861 used when the result is truncated to 32 bits.
3862 * VALUES declaration is partially enabled.
3863 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3864 * fixed some bugs revealed by Paul Dietz' test suite:
3865 ** The system now obeys the constraint imposed by
3866 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3867 types form a lattice under type intersection.
3868 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3869 ** ASSOC now ignores NIL elements in an alist.
3870 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3871 and (1+ MOST-POSITIVE-FIXNUM) answers.
3872 ** The addition of a method with invalid qualifiers to a generic
3873 function does not cause an error to be signalled immediately;
3874 a warning is signalled, and the error is generated only on
3875 calling the generic function.
3876 * changed .fasl file version number, in part to add type codes for
3877 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3878 obscure ANSI requirements
3880 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3881 * fixed bug 148: failure to inline-expand a local function left
3882 garbage, confusing the compiler.
3883 * fixed bugs 3cd: structure slot readers perform type check if the
3884 slot can have an invalid value (i.e. it is either not initialized
3885 or can be written with a less specific slot writer).
3886 * bug fix: the compiler now traps array references to elements off
3887 the end of an array; previously, the bounds checking in some
3888 circumstances could go off-by-one.
3889 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3891 * type declarations for array element types now obey the description
3892 on the CLHS page "Declaration TYPE", as per discussions on
3893 sbcl-help around 2003-05-08. This means that a declaration
3894 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3895 declaration, all references to BAR will be asserted or assumed
3896 (with THE, so dependent on compiler policy) to involve objects of
3897 type FOO. Note that no such declaration is implied in
3898 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3899 * declared types of functions from the "Conditions"
3900 chapter. (reported by Paul Dietz)
3901 * bug fix: CERROR accepts a function as its first argument.
3902 * bug fix: NTH an NTHCDR accept a bignum as index
3903 arguments. (reported by Adam Warner)
3904 * optimization: character compare routines now optimize comparing
3905 against a constant character. (reported by Gilbert Baumann)
3906 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3907 argument now works properly on the MIPS platform.
3908 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3909 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3910 declared to have a functional type, does not cause an error
3912 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3913 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3914 * fixed bug: if last continuation of a deleted block has a
3915 destination, this destination should be deleted too. (reported by
3917 * fixed a bug in the bootstrap process: the host compiler's values
3918 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3919 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3920 test case from Patrik Nordebo)
3921 * improved the ability of the disassembler on the PPC platform to
3922 provide helpful disassembly notes.
3923 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3924 the class in more cases than previously.
3925 * bug fix: FILE-POSITION now understands :START and :END for
3926 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3927 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3928 8) data. (thanks to David Lichteblau)
3929 * bug fix: it is possible to add a method to a generic function
3930 without lambda list.
3931 * bug fix: reader failed to signal END-OF-FILE inside an
3932 object representation. (reported by Nikodemus Siivola)
3933 * fixed some bugs revealed by Paul Dietz' test suite:
3934 ** LAST and [N]BUTLAST should accept a bignum.
3935 ** condition slot accessors are methods.
3936 ** (VECTOR NIL) is a subtype of STRING.
3938 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3939 * minor incompatible change: some nonsensical specialized lambda
3940 lists (used in DEFMETHOD) which were previously ignored now signal
3942 * minor incompatible change: the system is now aware of the types of
3943 variables in the COMMON-LISP package, and will signal errors for
3944 most violations of these type constraints (where previously they
3945 were silently accepted).
3946 * minor incompatible change: COMPILE-FILE now uses the freedom
3947 afforded (ANSI 3.2.2.3) to use derived function types for
3948 functions defined in the same file. This also permits the system
3949 to warn on static type mismatches and function
3950 redefinition. (Currently it does not work with high DEBUG level.)
3951 * minor incompatible change: VALUES declaration is disabled.
3952 * When issuing notes, the compiler now signals a condition of type
3953 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3954 restart for use in user handlers. It is expected that the
3955 COMPILER-NOTE condition will eventually become a condition
3956 supertype to a hierarchy of note types, which will then be
3957 handleable in a similar fashion. However, at the moment, no such
3958 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3959 but it's an implementation detail, not a classification for the
3961 * Changes in type checking closed the following bugs:
3962 ** type checking of unused values (192b, 194d, 203);
3963 ** template selection based on unsafe type assertions (192c, 236);
3964 ** type checking in branches (194bc).
3965 * A short form of VALUES type specifier has ANSI meaning (it has
3966 increased the number of situations when SBCL cannot perform type
3968 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3969 keywords or constants is permissible.
3970 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3971 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3972 classes. (thanks to Antonio Martinez)
3973 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3974 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3975 argument to a pretty-print stream. Instead, it leaves any such
3976 operations to DESCRIBE-OBJECT methods.
3977 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3979 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3980 lambda lists. (thanks to David Lichteblau)
3981 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3982 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3983 (thanks to Gerd Moellmann)
3984 * fixed bug 246: increased compilation speed of long
3985 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3987 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3989 * DEFCONSTANT now throws a condition of type
3990 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3991 constant to a non-EQL value; CONTINUE and ABORT restarts
3992 respectively change and preserve the value.
3993 * fixed bug 63: The code walker, part of the implementation of CLOS,
3994 is now better at handling symbol macros.
3995 * bug fix: There is no longer an internal implementation type named
3996 CL:LENGTH. (reported by Raymond Toy)
3997 * bug fix: In macro-like defining macros/special operators the
3998 implicit block does not enclose the lambda list.
3999 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4000 enclosed in parentheses) are not suitable as type specifiers, and
4001 their use properly signals an error now.
4002 * bug fix: An argument count mismatch for a type specifier in code
4003 being compiled no longer causes an unhandled error at compile
4004 time, but signals a compile-time warning.
4005 * fixed simple vector readable printing
4006 * bug fix: DESCRIBE takes more care over whether the class
4007 precedence list slot of a class is bound before accessing it.
4008 (reported by Markus Krummenacker)
4009 * bug fix: FORMATTER can successfully compile pretty-printer format
4010 strings which use variants of the ~* directive inside.
4011 * bug fix: SEARCH now applies its TEST predicate to the elements of
4012 the arguments in the correct order. (thanks to Wolfhard Buss)
4013 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4014 in type inference. (thanks to Robert E. Brown)
4015 * bug fix: Reading in symbols with an explicit package name of ""
4016 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4017 * fixed some bugs revealed by Paul Dietz' test suite:
4018 ** NIL is now allowed as a structure slot name.
4019 ** Arbitrary numbers, not just REALs, are allowed in certain
4020 circumstances in LOOP for-as-arithmetic clauses.
4021 ** Multiple class redefinitions before slot access no longer
4022 causes a type error.
4023 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4024 association between the name and a class.
4025 ** Generic functions with non-standard method-combination and over
4026 five methods all of which return constants no longer return NIL
4027 after the first few invocations. (thanks to Gerd Moellmann)
4028 ** CALL-NEXT-METHOD with no arguments now passes the original
4029 values of the arguments, even in the presence of assignment.
4030 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4032 ** DISASSEMBLE works with closures and funcallable instances.
4033 ** ADD-METHOD now returns the generic function, not the new method.
4034 ** FIND-METHOD signals an error if the lengths of the specializers
4035 is incompatible with the generic function, even if the ERRORP
4037 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4038 which its argument is a member.
4039 ** DEFCLASS only redefines the class named by its class-name
4040 argument if that name is the proper name of the class;
4041 otherwise, it creates a new class.
4042 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4043 of the UNBOUND-SLOT condition to the name of the slot.
4044 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4045 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4046 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4047 SLOT-MAKUNBOUND in the specified fashion.
4049 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4050 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4051 cross-compilation host. As a consequence, we can now bootstrap our
4052 way up to SBCL starting with a bare gcc toolchain and human-readable
4053 source code (first the source to CLISP, then the source to SBCL).
4054 * A contributed module containing a partial implementation of the
4055 simple-streams interface has been included. (thanks to Rudi
4057 * A contributed module implementing the RFC1321 Message Digest
4058 Algorithm, known as MD5, has been included.
4059 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4060 no longer has any effect, as the code controlled by this feature
4061 has been deleted. (As far as we know, no-one has ever built using
4062 this feature, and its semantics were confused in any case).
4063 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4064 work on conditions (as required by the ANSI specification),
4065 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4066 expected behaviour on conditions. Users should note, however,
4067 that such behaviour is not required by the ANSI specification,
4068 and so use of this behaviour may render their code unportable.
4069 * fixed some bugs revealed by Paul Dietz' test suite:
4070 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4072 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4073 ** SXHASH on condition objects no longer returns NIL.
4074 ** :ALLOCATION :CLASS slots are better treated; their values are
4075 updated on class redefinition, and initforms inherited from
4076 superclasses are applied.
4077 ** REMOVE-METHOD returns its generic function argument even when
4078 no method was removed.
4079 ** SHARED-INITIALIZE now initializes the values of the requested
4080 slots, including those with :ALLOCATION :CLASS.
4081 ** ALLOCATE-INSTANCE now works on structure classes defined via
4082 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4084 ** SLOT-EXISTS-P now works on conditions, as well as structures
4086 ** MAKE-LOAD-FORM now has the required methods on
4087 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4088 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4089 keyword, and now implements the SLOT-NAMES argument.
4090 ** methods with &OPTIONAL arguments no longer allow too many
4091 arguments to be passed in the call without error.
4092 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4093 option is consistent with the required arguments of the generic
4094 function lambda list.
4095 * bug fix: REQUIRE accepts a string designator. (Thanks to
4097 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4098 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4099 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4100 * bug fix: The compiler now checks for duplicated variables in macro
4102 * bug fix: SETQ on globals returns the correct value.
4103 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4104 not a COMPILER-ERROR (followed by some other strange error on
4105 choosing the CONTINUE restart).
4106 * bug fix: make.sh and friends are now more consistent in the way that
4107 they look for GNU "make".
4109 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4110 * experimental native threads support (on x86 Linux >=2.4 only).
4111 This is not compiled in by default: you need to add :SB-THREAD to
4112 the target features. See the "Beyond ANSI" chapter of the manual
4114 * fix for longstanding nonANSIism: The old distinction between
4115 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4116 The return value from CL:FIND-CLASS is now a CLOS class, and
4117 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4118 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4119 * An interface to the MetaObject Protocol, as described in Kiczales,
4120 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4121 MIT Press, 1991, is available from the SB-MOP package.
4122 * incompatible change: the SB-PCL package should now be considered
4123 a private implementation detail, and no longer a semi-private MOP
4125 * minor incompatible change: due to rearrangement for threads, the
4126 control stack and binding stack are now allocated at arbitrary
4127 addresses instead of being hardcoded per-port. Users affected by
4128 this probably have to be doing advanced things with shared
4129 libraries, and will know who they are.
4130 * minor incompatible change: Previously, all --eval forms used were
4131 processed with READ before any of them were processed with EVAL.
4132 Now each --eval form is processed with both READ and EVAL before
4133 the next --eval form is processed. (Thus package operations like
4134 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4135 work as the user might reasonably expect.)
4136 * minor incompatible change: *STANDARD-INPUT* is now only an
4137 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4139 * minor incompatible change: Y-OR-N-P is now character-oriented,
4140 not line oriented. Also, YES-OR-NO-P now works without errors.
4141 (thanks to Antonio Martinez)
4142 * sb-aclrepl module improvements: an integrated inspector, added
4143 repl features, and a bug fix to :trace command.
4144 * Known functions, which cannot be open coded by the backend, are
4145 considered to be able to check types of their arguments. (fixing
4146 a bug report by Nathan J. Froyd)
4147 * fixed a bug in computing method discriminating functions: It is
4148 now possible to define methods specialized on classes which have
4149 forward-referenced superclasses. (thanks to Gerd Moellmann)
4150 * fixed evaluation order in optional entries (reported by Gilbert
4152 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4153 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4154 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4155 required-by-AMOP NAME argument, as well as CLASS and
4156 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4157 * fixed bug 20: DEFMETHOD can define methods using names that are
4158 not the proper names of classes to designate class specializers.
4159 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4160 Unix file descriptors, instead of blowing up. (thanks to Antonio
4162 * Garbage collection refactoring: user-visible change is that a
4163 call to the GC function during WITHOUT-GCING will not do garbage
4164 collection until the end of the WITHOUT-GCING. If you were doing
4165 this you were probably losing anyway.
4166 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4167 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4168 TYPEP the latter but not the former.
4169 * The compiler issues a full WARNING for calls to undefined functions
4170 with names from the CL package.
4171 * MAP-INTO for a vector destination is open coded. (reported by
4172 Brian Downing on c.l.l)
4173 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4174 documentation string.
4175 * fixed some bugs revealed by Paul Dietz' test suite:
4176 ** COPY-ALIST now signals an error if its argument is a dotted
4178 ** Condition slots are now accessed more correctly in the presence
4179 of multiple initargs for a given slot.
4180 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4181 exclude restarts of the same name associated with a different
4183 ** DEFCLASS of forward-referenced classes with another
4184 forward-referenced class in the superclasses list no longer
4186 ** Condition slots are now initialized once each, not multiple
4187 times. (thanks to Gerd Moellmann)
4188 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4190 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4191 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4192 arguments contain duplicated elements.
4193 ** RESTART-CASE understands local macros.
4194 ** RESTART-CASE associates exactly its own restarts with a condition.
4195 ** ENDP in safe mode checks its argument to be of type LIST.
4196 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4197 in question is unbound.
4198 ** Optimized MAKE-INSTANCE functions no longer cause internal
4199 assertion failures in the presence of duplicate initargs.
4200 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4201 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4202 propagated even in the ctor optimized implementation of
4204 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4206 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4207 * a better implementation of SXHASH on (simple) bit vectors,
4208 measured both in execution speed and in distribution of results
4209 over the positive fixnums, has been installed. Likewise, a better
4210 implementation of EQUAL for simple bit vectors is now available.
4211 * fixed CEILING optimization for a divisor of form 2^k.
4212 * fixed bug 240 (emitting extra style warnings "using the lexical
4213 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4214 by Antonio Martinez)
4215 * fixed SXHASH, giving different results for NIL depending on type
4216 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4217 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4218 variable. (found by Rolf Wester)
4219 * SBCL does not ignore type declarations for special
4220 variables. (reported by rif on c.l.l 2003-03-05)
4221 * some bug fixes in contrib/sb-aclrepl/
4222 * fixed some bugs revealed by Paul Dietz' test suite:
4223 ** a bug in the CONS type specifier, whereby the CAR and CDR
4224 types got intertwined, has been fixed;
4225 ** the type system is now able to reason about the interaction
4226 between INTEGER and RATIO types more completely;
4227 ** APPEND, [N]REVERSE and NRECONC check that those their
4228 arguments, which must be proper lists, are really so;
4229 ** An array specialized to be unable to hold elements has been
4230 implemented, as required -- yes, really -- by ANSI;
4231 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4232 on malformed property lists;
4234 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4235 * incompatible packaging change: in line with Unix convention,
4236 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4237 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4238 * REQUIRE and PROVIDE are now optionally capable of doing something
4239 useful. See the documentation string for REQUIRE.
4240 * infrastructure for a managed SBCL contrib system: contributed
4241 modules in this release include:
4242 ** the ASDF system definition facility;
4243 ** an interface to the BSD Sockets API;
4244 ** an ACL-like convenience interface to the repl;
4245 (thanks to Kevin Rosenberg)
4246 ** an implementation of ROTATE-BYTE, with efficient implementation
4248 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4249 gives a closer approximation to the right answer than previously.
4250 (thanks to Raymond Toy)
4251 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4252 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4253 optional environment arguments, as required by ANSI.
4254 * fixed bugs in other functions taking environment objects, allowing
4255 calls with an explicit NIL environment argument to be compiled
4257 * fixed bug 228: primary return values from
4258 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4259 COMPILE or FUNCTION.
4260 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4261 :TYPE will no longer signal errors on innocuous objects.
4262 * fixed bug 231b: SETQ is better at respecting type declarations in
4263 the lexical environment.
4264 * fixed a bug in DEFCLASS: classes named by symbols with no or
4265 unprintable packages can now be defined.
4266 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4267 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4268 * fixed compiler failure related to checking types of functions.
4269 (reported by Robert E. Brown)
4270 * the compiler is now much more consistent in its error-checking
4271 treatment of bounding index arguments to sequence functions: in
4272 (SAFETY 3) code, errors will be signalled in almost all cases if
4273 invalid sequence bounding indices are passed to functions defined
4274 by ANSI to operate on sequences.
4275 * fixed a bug in the build procedure: documentation of SBCL-specific
4276 packages is now preserved and available in the final Lisp image.
4277 * lifted FDEFINITION lookup out of loops in the implementation of
4278 many list operations. (thanks to Robert E. Brown)
4279 * fixed a bug in the reader: the #n# reader macro now works for
4280 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4281 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4282 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4283 E. Brown and Tony Martinez respectively)
4284 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4285 SLOT-BOUNDP: in particular, it is now able to optimize them much
4286 better, and is now not vulnerable to having packages renamed.
4287 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4288 always called when a slot is not present in an instance. (thanks
4290 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4291 longer signal an error on unreading a character following EOF on
4292 the previous constituent stream. (thanks to Tony Martinez)
4293 * fixed some bugs revealed by Paul Dietz' test suite:
4294 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4295 not just nonnegative fixnums;
4296 ** the logical bit-array operators such as BIT-AND now accept an
4297 explicit NIL for their "opt-arg" argument (to indicate a
4298 freshly-consed result bit-array);
4299 ** ELT now signals an error on an invalid sequence index in safe
4301 ** the type system is now cleverer about negations of numeric
4302 types, and consequently understands the BIGNUM and RATIO types
4304 ** the type system is now cleverer about the interaction between
4305 INTEGER and RATIO types: while bugs still remain, many more
4306 cases are accurately computed;
4307 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4308 if it is in the last clause;
4309 ** CONSTANTLY now correctly returns a side-effect-free function in
4311 ** DECLARE is no longer treated as a special-operator; in
4312 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4313 * incremented fasl file version number due to the change in the
4314 DEFSTRUCT-SLOT-DESCRIPTION structure.
4316 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4317 * minor incompatible change: code processed by the "interpreter" or
4318 EVAL now has a compilation optimization policy of (DEBUG 2)
4319 (changed from (DEBUG 1)) to improve debuggability of interactive
4320 development, and to allow the use of the debug RETURN command in
4322 * an experimental implementation of the RETURN command for the
4323 debugger has been included. (thanks to Frederik Kuivinen)
4324 * fixed bug 62: constraints were not propagated into a loop.
4325 * fixed bug in embedded calls of SORT (reported and investigated by
4327 * fixed some bugs revealed by Paul Dietz' test suite:
4328 ** printing and reading of arrays with some dimensions having
4329 length 0 (thanks to Gerd Moellmann);
4330 ** BOA constructor with &AUX argument without a default value does
4331 not cause a type error;
4332 ** CONSTANTP now returns true for all self-evaluating objects.
4334 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4335 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4336 accessors that are related by inheritance, as specified in the
4337 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4338 Valtteri Vuorikoski)
4339 * The compiler is now able to inline functions that were defined in
4340 a complex lexical environment (e.g. inside a MACROLET).
4341 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4343 * Support for the upcoming FreeBSD-5.0 release has been included.
4344 (thanks to Dag-Erling Smorgrav)
4345 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4346 effect when it is not in a toplevel context.
4347 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4348 stand a better chance of being correct. (thanks to Gerd
4350 * fixed bug in COERCE, which now signals an error on coercing a
4351 rational to a bounded real type which excludes the expected
4353 * The compiler is now able to derive types more accurately from the
4354 COERCE and COMPILE functions.
4355 * fixed bug 223: functional binding is considered to be constant
4356 only for symbols in the CL package.
4357 * fixed bug 231: SETQ did not check the type of a variable being set
4358 (reported by Robert E. Brown)
4359 * A new optimization for MAKE-INSTANCE has been included, fixing
4360 various bugs (including relating to :ALLOCATION :CLASS slots and
4361 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4363 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4364 ** As required by ANSI, LOOP now disallows anonymous collection
4365 clauses such as COLLECT I in conjunction with aggregate boolean
4366 clauses such as THEREIS (= I 1);
4367 ** LOOP now signals an error when any variable is reused in the
4368 same loop (including the potentially useful construct analogous
4369 to WITH A = 1 WITH A = (1+ A);
4370 ** IT is only a special loop symbol within the first clause of a
4371 conditional loop clause;
4372 ** LOOP with a typed iteration variable over a hashtable now
4373 signals a type error iff it should.
4374 * fixed some other bugs revealed by Paul Dietz' test suite:
4375 ** FILE-STREAM now names the class previously known as FD-STREAM;
4376 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4377 argument) no longer signals an error;
4378 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4379 of the slot symbol, rather than using the current package
4380 ((:CONC-NAME "") continues to intern the slot's name in the
4382 * incremented fasl file version number, because of the incompatible
4383 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4384 of the new implementation of DEFINE-COMPILER-MACRO.
4386 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4387 * Support for building SBCL for MIPS platforms running in
4388 little-endian mode has now been checked in, and basic
4389 functionality on said platforms verified.
4390 * minor incompatible change: PCL now records the pathname of a file
4391 in which methods and the like are defined, rather than its
4393 * minor incompatible change: TRUENAME now considers the truename of
4394 a file naming a directory to be the pathname with :DIRECTORY
4395 component indicating that directory.
4396 * minor incompatible change: a NAMED clause in the extended form of
4397 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4398 reason for the previous behaviour is unclear.
4399 * more systematization and improvement of CLOS and MOP conformance
4400 in PCL (thanks to Gerd Moellman and Pierre Mai):
4401 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4403 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4404 primary methods with no specializers;
4405 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4407 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4408 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4409 FORWARD-REFERENCED-CLASSes; error reporting on
4410 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4412 ** SXHASH on CLOS instances now uses a slot internal to the
4413 instance to return different numbers on distinct instances,
4414 while preserving the same return value through invocations of
4416 ** DEFMETHOD signals errors when methods with longer incongruent
4417 lambda lists are added to generic functions;
4418 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4419 CLASS, as specified in AMOP;
4420 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4421 on the order returned by the primary method for classes of
4422 class STANDARD-CLASS;
4423 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4424 * fixed some bugs shown by Paul Dietz' test suite:
4425 ** DOLIST puts its body in TAGBODY;
4426 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4428 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4429 value producing form;
4430 ** if more variables are given to PROGV than values, extra
4431 variables are bound and made to have no value;
4432 ** NSUBSTITUTE on list arguments gets the right answer with
4434 ** ELT signals an error of type TYPE-ERROR when the index argument
4435 is not a valid sequence index;
4436 ** LOOP signals (at macroexpansion time) an error of type
4437 PROGRAM-ERROR when duplicate variable names are found;
4438 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4439 ** FUNCALL of special-operators now cause an error of type
4441 ** PSETQ now works as required in the presence of side-effecting
4442 symbol-macro places;
4443 ** NCONC accepts any object as its last argument;
4444 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4446 ** loop-for-as-package does not require a package to be explicitely
4448 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4450 * fixed bug 166: compiler preserves "there is a way to go"
4451 invariant when deleting code.
4452 * fixed bug 172: macro lambda lists with required arguments after
4453 &REST arguments now cause an error to be signalled. (thanks to
4455 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4456 bug. (thanks to Matthew Danish)
4457 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4459 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4460 arguments are lexically rebound. (thanks to Gerd Moellmann and
4462 * fixed bug 194: error messages are now more informative when there
4463 is no primary method applicable in a call to a generic
4464 function. (thanks to Gerd Moellmann)
4465 * fixed bug in command line argument checking (thanks to Julian
4467 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4468 (thanks to Matthew Danish)
4469 * incremented fasl file version number, because of the
4470 SXHASH-related changes in the layout of CLOS data structures
4472 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4473 * minor incompatible change: The runtime (the Unix executable named
4474 "sbcl") is now much pickier about the .core files it will load.
4475 Essentially it now requires .core files to descend from the same
4476 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4477 as the runtime does. (The intent is to prevent the crashes which
4478 can occur, and which can even be reported as mysterious failures,
4479 when people patch the sources or change the build parameters
4480 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4481 sbcl and .core files.)
4482 * fixed bug: VALUES-LIST is no longer optimized away.
4483 * fixed bug 142: The FFI conversion of C string values to Lisp
4484 string values no longer conses excessively. (thanks to Nathan
4485 Froyd porting Raymond Toy's fix to CMU CL)
4486 * began to systematize and improve MOP conformance in PCL (thanks to
4487 Nathan Froyd, Gerd Moellman and Pierre Mai):
4488 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4490 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4491 ** FINALIZE-INHERITANCE is now called on class finalization;
4492 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4493 argument precedence order.
4494 * fixed bug 202: The compiler no longer fails on functions whose
4495 derived types contradict their declared type.
4496 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4497 so it can be non-toplevel.
4498 * The fasl file version number has changed (because of the new
4499 implementation of DEFMACRO).
4500 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4501 safe code, that any length requirement by their type-specifier
4502 argument is valid. The exceptions to this are described in bug
4504 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4505 functions now check the types of their inputs as required by ANSI.
4506 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4507 introduced symbol is DECLAREd to be SPECIAL.
4508 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4509 * fixed bug: :COUNT argument to sequence functions may be negative
4510 * fixed bug: body of DO-SYMBOLS may contain declarations
4511 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4512 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4513 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4514 symbol macro only once
4515 * fixed printing of call frame when argument list is unavailable
4516 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4517 * compiler no longer signals WARNING on unknown keyword
4520 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4521 * A beta-quality port to the mips architecture running Linux,
4522 based on the old CMUCL backend, has been made. It has been tested
4523 on a big-endian kernel, and works sufficiently well to be able to
4524 rebuild itself; it has not been tested in little-endian mode.
4525 * fixed an inconsistency between gencgc.c and purify.c which made
4526 dumping/loading .core files unreliable
4527 * fixed bug 120a: The compiler now deals correctly with IFs where
4528 the consequent is the same as the alternative, instead of
4529 misderiving the return type. (thanks to Alexey Dejneka)
4530 * fixed bug 113: Logical pathnames are now dumpable (the logical
4531 host is resolved at load-time, throwing an error if it is not
4533 * fixed bug 174: FORMAT's error message is slightly clearer when a
4534 non-printing character is used in a format directive.
4535 * fixed several bugs in compiler checking of type declarations, i.e.
4536 violations of the Python "declarations are assertions" principle
4537 (thanks to Alexey Dejneka)
4538 * fixed several bugs in PCL's error checking (thanks to Gerd
4540 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4542 * fixed bug in compilation of functions as first class values
4543 (thanks to Antonio Martinez-Shotton)
4544 * The compiler's handling TYPE-ERRORs which it can prove will
4545 inevitably happen at runtime has been cleaned up and corrected
4546 in several ways. (thanks to Alexey Dejneka)
4547 * improved argument type checking for various basic arithmetic
4548 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4549 lavished on them in the past that they can be compiled in many
4550 ways in different special cases
4551 * fixed bug 181: compiler checks validity of user supplied type
4553 * cleaned up code flushing in optimization: Function calls which
4554 should signal errors for safety purposes (e.g. which ANSI says
4555 should signal errors when their arguments are of incorrect type)
4556 are no longer optimized away.
4557 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4558 * incremented fasl file version number, because changes in the
4559 implementation of sequence functions like COERCE caused
4560 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4561 in old inline expansions) to become undefined. (Actually these
4562 changes were later undone, so we might very well be binary
4563 compatible with 0.7.7 after all, but leaving the version number
4564 incremented seemed like the simplest and most conservative
4567 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4568 * An alpha-quality port to the parisc architecture running Linux,
4569 based on the old CMUCL backend, has been made. This, even more so
4570 than the other backends, should be considered still a work in
4571 progress; known problems include that the Linux kernel in 64-bit
4572 mode does not propagate the correct sigcontext structure to
4573 userspace, and consequently SBCL on a parisc64 kernel will not
4575 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4576 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4577 suppressed.) Also now that the compiler is looking at declarations
4578 in the environment, it checks optimization declarations as well,
4579 and suppresses inlining when (> DEBUG SPEED).
4580 * More fixes have been made to treatment of floating point exception
4581 treatment and other Unix signals. In particular, floating point
4582 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4583 * The detection and handling of control stack exhaustion (infinite
4584 or very deeply nested recursion) has changed. Stack exhaustion
4585 detection is now done by write-protecting pages at the OS level
4586 and applies at all optimization settings; when found, a
4587 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4588 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4589 be caught using IGNORE-ERRORS.
4590 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4591 correctly when transforming recursive LABELS functions to LETs.
4592 (thanks to Alexey Dejneka)
4593 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4594 that are names of constants or global variables.
4595 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4596 alien routines with docstrings.
4597 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4598 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4600 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4601 (thanks to Eric Marsden)
4602 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4603 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4604 * Bug fix: The SPARC backend can now compile functions involving
4605 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4606 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4607 to a functions expecting a PATHNAME-DESIGNATOR.
4608 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4609 lambda lists. (thanks to Alexey Dejneka)
4610 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4611 functions so that EXPORTing the name of the class doesn't cause
4612 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4613 to Antonio Martinez for reporting this)
4614 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4615 constant-folded without failing an assertion. (thanks to Einar
4616 Floystad Dorum for reporting this)
4617 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4618 types are now dealt with more correctly by the compiler.
4619 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4620 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4621 behaviour analogous to RENAME-FILE. This puts its behaviour more
4622 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4624 * The fasl file version number has changed again. (because of the
4625 bug fix involving the names of PCL MAKE-INSTANCE functions)
4627 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4628 * bug fix: Floating point exceptions are treated much more
4629 consistently on the x86/Linux and PPC/Linux platforms.
4630 * Array initialization with :INITIAL-ELEMENT is now much faster for
4631 cases when the compiler cannot open code the array creation, but
4632 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4633 array accesses have also seen a speed increase.
4634 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4635 specified. (This was at the root of some bad interactions between
4636 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4638 * bug fix: Internal error arguments for undefined functions are now
4639 computed correctly on the PPC/Linux platform.
4640 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4641 Raymond Toy's patch for CMU CL)
4642 * Support for the Solaris 9 operating environment has been included
4643 (thanks to Daniel Merritt)
4644 * A very ugly but hopefully complete draft of the missing FFI chapter
4645 of the manual has been created by reformatting the corresponding
4646 CMU CL manual chapter into (currently very ugly and incoherent)
4647 DocBook and bringing it up to date for SBCL behavior. Thus, the
4648 manual is now essentially complete, at least by my extreme
4649 once-and-only-once standards, whereby it's acceptable to refer to
4650 the doc strings of SB-EXT functions as the primary documentation.
4651 * The fasl file version number has changed again, due to cleanup of
4652 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4653 is no longer a static symbol.)
4655 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4656 * SBCL now builds with OpenMCL (version 0.12) as the
4657 cross-compilation host; also, more progress has been made toward
4658 bootstrapping under CLISP.
4659 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4661 * bug 158 fixed: The compiler can now deal with integer loop
4662 increments different from 1; fixing this turned out also to fix
4664 * bug 169 fixed: no more bogus warnings about using lexical bindings
4665 despite the presence of perfectly good SPECIAL declarations (thanks
4666 to David Lichteblau)
4667 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4668 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4669 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4671 * bug 180 fixed: Method combination specifications no longer ignore
4672 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4673 * bug fix: Structure type predicate functions now check their argument
4674 count as they should.
4675 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4676 correctly. (thanks to Pierre Mai)
4677 * minor incompatible change: The --noprogrammer option is deprecated
4678 in favor of the new --disable-debugger option, which is very similar.
4679 (The major difference is that it takes effect at a slightly different
4680 time at startup, causing handling of errors in --sysinit and
4681 --userinit files will be affected differently.) The
4682 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4683 been added to allow this functionality to be controlled from ordinary
4684 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4685 maintainers, who might want to run non-interactive scripts to
4686 build SBCL cores which will later be used interactively.)
4687 * minor incompatible change: The LOAD function no longer, when given
4688 a wild pathname to load, loads all files matching that pathname.
4689 Instead, an error of type FILE-ERROR is signalled.
4691 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4692 * bug 147 fixed: The compiler preserves its block link/count
4693 invariants more correctly now so that it doesn't crash. (thanks
4695 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4697 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4698 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4699 no-value-for-this-character as NIL (as specified by ANSI).
4700 * HOST-NAMESTRING on physical pathnames now returns a string that is
4701 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4702 (thanks to Christophe Rhodes)
4703 * The Alpha port handles icache flushing more correctly. (thanks to
4705 * More progress has been made toward bootstrapping under CLISP. (thanks
4706 to Christophe Rhodes)
4707 * The fasl file format has changed again, because dynamic loading
4708 on OpenBSD (which has non-ELF object files) motivated some cleanups
4709 in the way that foreign symbols are transformed and passed around.
4710 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4711 is no longer treated as whitespace by the reader, but instead as
4712 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4713 |A
\7fB|, instead of A as it used to.
4715 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4716 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4717 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4718 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4719 this as of 0.7.1.45, but was left out of the previous news section
4720 (thanks to Dan Barlow)
4721 * SBCL now runs on the Solaris operating system on SPARC architectures
4722 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4723 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4724 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4725 * SPARC backend cleanups, allowing builds of cores optimized for V8
4726 and V9 SPARCS, and also emission of code targeted to a particular
4727 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4729 * SBCL is closer to bootstrapping under CLISP, thanks to various
4730 fixes by Christophe Rhodes.
4731 * The fasl file format has changed again, to allow the compiler's
4732 INFO database to support symbol macros.
4733 * The user manual (in doc/) is formatted into HTML more nicely.
4734 (thanks to coreythomas)
4735 * The system is smarter about SUBTYPEP relationships, especially
4736 those involving NOT types (including types such as ATOM which are
4737 represented internally using NOT types). Thus SUBTYPEP is less
4738 likely to return (VALUES NIL NIL) in general, and in particular
4739 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4741 * The fasl file format has changed again, because the internal
4742 representation of types now includes a new slot to support the new
4743 SUBTYPEP-of-NOT-types logic.
4744 * (not a change in the main branch of SBCL, but a related prototype
4745 which can hopefully be merged into the main branch of SBCL in the
4746 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4747 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4748 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4749 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4750 dispatch macro character combinations. (thanks to Alexey Dejneka)
4751 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4752 that superficially look like logical namestrings correctly.
4753 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4755 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4756 default supplied-p) for &optional and &key arguments. (thanks to
4759 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4760 * incompatible change: The compiler is now less aggressive about
4761 tail call optimization, doing it only when (> SPACE DEBUG) or
4762 (> SPEED DEBUG). (This is an incompatible change because there are
4763 programs which relied on the old CMU-CL-style behavior to optimize
4764 away their unbounded recursion which will now die of stack overflow.)
4765 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4766 for non-GENCGC systems has been increased to 20M (since that
4767 seems much closer to the likely performance optimum for modern
4768 systems than the old 4M value was)
4769 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4770 and *DEBUG-PRINT-LEVEL*
4771 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4772 of CMU CL's support for SPARC, and various endianness and other
4773 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4774 * new syntactic sugar for the Unix command line: --load foo.bar is now
4775 an alternate notation for --eval '(load "foo.bar")'.
4777 ** The system now detects stack overflow and handles it gracefully,
4778 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4779 optimization settings. (This is a good thing in general, and
4780 its introduction in this version should be particularly timely
4781 for anyone whose code fails because of suppression of tail
4783 ** The system now hunts for the C variable "environ" in a more
4784 devious way, to avoid segfaults when the C library version differs
4785 between compile time and run time. (thanks to Christophe Rhodes)
4786 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4787 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4788 ** The compiler no longer issues bogus style warnings for undefined
4789 classes in the same source file as the DEFCLASSes which defined
4790 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4792 ** fixes in CONDITION class precedence list for undefined function
4793 errors (thanks to Alexei Dejneka)
4794 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4795 correctly. (thanks to Dan Barlow)
4796 ** portability fixes aiming at bootstrapping under CLISP (thanks
4797 to Dave McDonald and Christophe Rhodes)
4798 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4799 ** fixes in type translation and and type inference (thanks to
4801 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4802 ** various fixes in the new ports (thanks to Dan Barlow)
4803 * several changes related to debugging:
4804 ** suppression of tail recursion, as noted above
4805 ** stack overflow detection, as noted above
4806 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4807 is now the default. (For some time encapsulation has been more
4808 reliable than the breakpoint-based :ENCAPSULATE NIL
4809 implementation, at least on X86 systems; and I just noticed that
4810 encapsulation also seems closer to the spirit of the ANSI
4813 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4815 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4816 up properly again. (There was a packaging bug in 0.7.0 which
4817 left their definitions in SB-SYS::LOAD-FOREIGN and
4818 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4819 vital for most things which interface to C-level interfaces,
4820 like extensions working with sockets or databases or
4821 Perl-compatible regexes or whatever, and the need to fix
4822 this bug is the main reason that 0.7.1 was released so
4824 ** DEFGENERIC is now choosier about the methods it redefines, so that
4825 reLOADing a previously-LOADed file containing DEFGENERICs does
4826 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4827 cycle now works as it should. (thanks to Alexey Dejneka)
4828 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4829 fixed by Christophe Rhodes. (He actually submitted this patch
4830 months ago, and I delayed until after 0.7.0.)
4831 ** Bug 111 (internal compiler confusion about runtime checks on
4832 FUNCTION types) was fixed by Alexey Dejneka.
4833 * Some internal cleanups (getting rid of variables which aren't
4834 needed now that the byte interpreter is gone) caused the fasl
4835 file format number to change again.
4837 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4838 * major incompatible change: The default fasl file extension, i.e. the
4839 default extension for files produced by COMPILE-FILE, has changed
4840 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4842 ** There are many changes in the implementation of the compiler.
4843 SBCL is now essentially a compiler-only implementation of ANSI
4844 Common Lisp. EVAL still "interprets" a few special cases, but
4845 almost all the interesting cases are handled by creating
4846 a LAMBDA expression, calling COMPILE on it, then calling
4847 FUNCALL on the result.
4848 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4849 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4850 Since the code is newer, there might still be some new bugs
4851 (though not as many as before Martin Atzmueller's fixes:-). But
4852 the new code is substantially simpler and clearer, and hopefully
4853 any remaining bugs will be simpler, less fundamental, and more
4854 fixable then the bugs in the old code.
4855 ** The revised compiler is still a little unsteady on its feet.
4857 *** The debugging information it produces (particularly the names
4858 of FUNCTION objects) is sometimes much less useful than what
4859 the old compiler produced.
4860 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4861 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4862 within a MACROLET) has been temporarily weakened.
4863 ** There are new compiler optimizations for various functions:
4864 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4865 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4866 *** the math functions TRUNCATE, FLOOR, and CEILING
4867 *** the function-of-all-trades COERCE
4868 Mostly these should be transparent, but there's one
4869 potentially-annoying problem (bug 117): when the compiler
4870 inline-expands a function and does type analysis on the result,
4871 it can create control paths which have type mismatches, and
4872 when it can't prove that those control paths aren't taken,
4873 it will issue WARNINGs about the type mismatches. This is
4874 a particular problem in practice for the new sequence functions.
4875 It's not clear how this should be fixed, and for now, a
4876 workaround is given in the entry for 117 in the BUGS file.
4877 ** (Because of the interaction between the two previous items --
4878 occasional inlining problems and new inline expansions -- some
4879 of the new sequence function optimizations won't really kick in
4880 completely until debugging information, and then inlining, are
4881 straightened out in some future version.)
4882 * minor incompatible changes:
4883 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4884 DIRECTORY no longer implicitly promotes NIL slots of its
4885 pathname argument to :WILD. In particular, when you ask for the
4886 contents of a directory (which you used to be able to do without
4887 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4888 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4889 ** changes in behavior that ANSI explicitly defines to be
4890 implementation dependent:
4891 *** The new compiler-only implementation still conforms with ANSI,
4892 but acts a little different than before. Besides the obvious
4893 changes in performance tradeoffs (that the cost per form passed
4894 to EVAL has gone up, and the cost per form executed by EVAL
4895 has gone down), the behavior of the system changes a little
4896 because there are no longer any interpreted function objects.
4897 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4898 e.g. doing COMPILE on the output of interactive DEFUN is
4900 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4902 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4903 has changed from (:CL) to NIL.
4904 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4905 e.g. #\Newline and #\Tab, don't have names specified in the
4906 ANSI Common Lisp standard, is now based on their ASCII symbolic
4907 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4908 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4909 are no longer used for output.
4910 ** changes in internal implementation constants:
4911 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4912 4 million. (If your application spends a lot of time GCing and
4913 you have a lot of RAM, you might want to experiment with
4914 increasing it even more.)
4915 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4916 However, almost all old code should still continue to work without
4917 immediate update, as SB-C-CALL is now a (deprecated) nickname
4919 ** Old operator names in the style DEF-FOO are now deprecated in
4920 favor of new corresponding names DEFINE-FOO, for consistency with
4921 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4922 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4923 internal symbols, but a few supported extensions like
4924 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4925 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4926 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4927 etc. as you get deeper into recursive calls to the debugger
4928 command loop, instead of the old "5]", "5]]", "5]]]"
4929 sequence. (I was motivated to do this when squabbles between
4930 ILISP and SBCL left me very deeply nested in the debugger. In the
4931 short term, this change will probably provoke more ILISP/SBCL
4932 squabbles, but hopefully it will be an improvement in the long run.)
4933 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4934 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4935 function, since declaiming return types involving aliens is
4936 (1) annoyingly messy to do by hand and (2) vital to efficient
4937 compilation of code which calls such functions.
4938 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4939 longer reexported by the SB-EXT package. They're solely useful
4940 for alien code, so it seems more logical that you should get
4941 them from the SB-ALIEN package, not in SB-EXT.
4942 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4943 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4944 features. Instead, the code that they used to control is always
4945 built into the system.
4946 * many other bug fixes
4947 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4948 advantage of the new EVAL-WHEN stuff and to clean them up in
4949 general, and they are now more ANSI-compliant in a number of
4950 ways. Martin Atzmueller is responsible for a lot of this.
4951 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4953 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4954 *** correct ERROR type for various file operations
4955 *** some fixes for Lisp streams
4956 *** DEFMETHOD syntax checking
4957 *** changing old weird representation of debug information as
4958 strings (which, among their other deficiencies, don't transform
4959 correctly when you rename packages, and don't change their
4960 print representation when you change things like *PACKAGE*
4961 and *PRINT-LENGTH*) to symbols and lists of symbols
4962 He also made several improvements and fixed several bugs in DESCRIBE.
4963 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4965 *** misbehavior of WRITE-STRING/WRITE-LINE
4966 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4967 and several other LOOP problems as well
4968 *** DIRECTORY when similar filenames are present
4969 *** DEFGENERIC with :METHOD options
4970 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4971 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4972 *** argument ordering in FIND with :TEST option
4973 *** mishandled package designator argument in APROPOS-LIST
4974 *** various problems in the backquote readmacro
4975 *** a bug in APROPOS
4976 *** probably some others that I'm not describing very well here,
4977 since the CVS log documents them by reference to sbcl-devel
4978 messages, and the SourceForge archives aren't working well.:-(
4979 ** Dan Barlow improved the Alpha port (and is making progress on the
4980 PPC port, for those of you who think different).
4981 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4982 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4983 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4984 continues to work on the SPARC port (for those of you in a position
4985 to look down upon our little PC-compatible boxes from a great height).
4986 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4987 and uses that copy, rather than the current dynamic value, when
4988 it's trying to decide whether to truncate output. Thus e.g.
4989 (let ((*print-lines* 50))
4990 (pprint-logical-block (stream nil)
4992 (let ((*print-lines* 8))
4993 (print (aref possiblybigthings i) stream)))))
4994 should now truncate the logical block only at 50 lines, instead of
4995 often truncating it at 8 lines, as it did before.
4996 * The doc/cmucl/ directory, containing old CMU CL documentation
4997 from the time of the fork, is no longer part of the base system.
4998 SourceForge has shut down its anonymous FTP service, and with it
4999 my original plan for distributing the old CMU CL documentation
5000 there. For now, if you need these files you can download an old
5001 SBCL source release and extract them from it.
5002 * The fasl file version number changed again, for dozens of reasons,
5003 some of which are apparent above.
5005 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5006 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5007 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5008 patch, so that DISASSEMBLE output is much nicer.
5009 * The code in the SB-PROFILE package now seems reasonably stable.
5010 I still haven't decided what the final interface should look like
5011 (I'd like PROFILE to interact cleanly with TRACE, since both
5012 facilities use function encapsulation) but if you have a need
5013 for profiling now, you can probably use it successfully with
5014 the current CMU-CL-style interface.
5015 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5016 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5017 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5018 link now returns the dangling link itself, and for similar
5019 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5020 link itself. (In these cases the old code signalled an error and
5021 looped endlessly, respectively.) Thus, DIRECTORY now works even
5022 in the presence of dangling and cyclic symbolic links.
5023 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5024 is now a supported extension again, since the consensus on
5025 sbcl-devel was that it can be useful for ordinary development
5026 work, not just for debugging SBCL itself.
5027 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5028 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5029 that currently-defined functions might be redefined later with
5030 different return types.
5031 * Hash tables can be printed readably, as inspired by CMU CL code
5032 of Eric Marsden and SBCL code of Martin Atzmueller.
5033 * better error handling in CLOS method combination, thanks to
5034 Martin Atzmueller porting Pierre Mai's CMU CL patches
5035 * more overflow fixes for >16Mbyte I/O buffers
5036 * A bug in READ has been fixed, so that now a single Ctrl-D
5037 character suffices to cause end-of-file on character streams.
5038 In particular, now you only need one Ctrl-D at the command
5039 line (not two) to exit SBCL.
5040 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5042 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5043 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5044 does the right thing.
5045 * The implementation of some type tests, especially for CONDITION
5046 types, is now tidier and maybe faster, due to CMU CL code
5047 originally by Douglas Crosher, ported by Martin Atzmueller.
5048 * Some math functions have been fixed, and there are new
5049 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5050 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5051 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5052 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5053 likely to be built into sbcl-0.7.0.)
5054 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5055 CL, ported to SBCL by Martin Atzmueller)
5056 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5057 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5058 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5059 * There's a new slam.sh hack to shorten the edit/compile/debug
5060 cycle for low-level changes to SBCL itself, and a new
5061 :SB-AFTER-XC-CORE target feature to control the generation of
5062 the after-xc.core file needed by slam.sh.
5063 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5064 COMPILE-FILE is no longer supported, so that now every function
5065 gets an entry point, so that block compilation looks a little
5066 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5067 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5068 returns the number of bytes consed since the system started,
5069 rather than the number consed since the first time the function
5070 was called. (The new definition parallels ANSI functions like
5071 CL:GET-INTERNAL-RUN-TIME.)
5072 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5073 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5074 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5075 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5076 * Fasl file version numbers are now independent of the target CPU,
5077 since historically most system changes which required version
5078 number changes have affected all CPUs equally. Similarly,
5079 the byte fasl file version is now equal to the ordinary
5082 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5083 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5084 is no longer recognized. I apologize for this, because it was
5085 listed in SB-EXT as a supported extension, but I found that
5086 its existing behavior was poorly specified, as well as incorrectly
5087 specified, and it looked like too much of a mess to straighten it
5088 out. I have enough on my hands trying to get ANSI stuff to work..
5089 * many patches ported from CMU CL by Martin Atzmueller, with
5090 half a dozen bug fixes in pretty-printing and the debugger, and
5091 half a dozen others elsewhere
5092 * fixed bug 13: Floating point infinities are now supported again.
5093 They might still be a little bit flaky, but thanks to bug reports
5094 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5095 as flaky as they were.
5096 * The --noprogrammer command line option is now supported. (Its
5097 behavior is slightly different in detail from what the old man
5098 page claimed it would do, but it's still appropriate under the
5099 same circumstances that the man page talks about.)
5100 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5101 are now supported, and enabled by default. Thus, the compiler can
5102 handle many floating point and complex operations much less
5103 inefficiently. (Thus e.g. you can implement a complex FFT
5105 * The compiler now detects type mismatches between DECLAIM FTYPE
5106 and DEFUN better, and implements CHECK-TYPE more correctly, and
5107 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5108 thanks to patches from Martin Atzmueller.
5109 * various fixes to make the cross-compiler more portable to
5110 ANSI-conforming-but-different cross-compilation hosts (notably
5111 Lispworks for Windows, following bug reports from Arthur Lemmens)
5112 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5113 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5114 fixed thanks to Pierre Mai's CMU CL patches.
5115 * fixes to keep the system from overflowing internal counters when
5116 it tries to use i/o buffers larger than 16M bytes
5117 * fixed bug 45a: Various internal functions required to support
5118 complex special functions have been merged from CMU CL sources.
5119 (When I was first setting up SBCL, I misunderstood a compile-time
5120 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5121 * improved support for type intersection and union, fixing bug 12
5122 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5123 more obscure bugs as well
5124 * some steps toward byte-compiling non-performance-critical
5125 parts of the system, courtesy of patches from Martin Atzmueller
5126 * Christophe Rhodes has made some debian packages of sbcl at
5127 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5128 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5129 stable, but are nonetheless usable. When he's ready, I'd be happy
5130 to add them to the SourceForge "File Releases" section. (And if
5131 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5132 * new fasl file format version number (because of changes in
5133 internal representation of (OR ..) types to accommodate the new
5134 support for (AND ..) types, among other things)
5136 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5137 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5139 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5141 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5142 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5143 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5144 * DESCRIBE now works on structure objects again.
5145 * Most function call argument type mismatches are now handled as
5146 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5147 know whether the function will be redefined before the call is
5148 executed. (The compiler could flag local calls with full WARNINGs,
5149 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5150 it doesn't keep track of enough information to know whether calls
5151 are local in this sense.)
5152 * Compiler output is now more verbose, with messages truncated
5153 later than before. (There should be some supported way for users
5154 to override the default verbosity, but I haven't decided how to
5155 provide it yet, so this behavior is still controlled by the internal
5156 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5157 src/compiler/ir1util.lisp.)
5158 * Fasl file format version numbers have increased again, because
5159 support for the Gray streams extension changes the layout of the
5160 system's STREAM objects.
5161 * The Gray subclassable streams extension now works, thanks to a
5162 patch from Martin Atzmueller.
5163 * The full LOAD-FOREIGN extension (not just the primitive
5164 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5165 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5166 but like most other programs, it defaults to copying the Unix
5167 environment from the original process instead of starting the
5168 new process in an empty environment.
5169 * Extensions which manipulate the Unix environment now support
5170 an :ENVIRONMENT keyword option which doesn't smash case or
5171 do other bad things. The CMU-CL-style :ENV option is retained
5172 for porting convenience.
5173 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5174 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5176 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5178 * A patch from Martin Atzmueller seems to have solved the SIGINT
5179 problem, and as far as we know, signal-handling now works cleanly.
5180 (If you find any new bugs, please report them!)
5181 * The system no longer defaults Lisp source file names to types
5182 ".l", ".cl", or ".lsp", but only to ".lisp".
5183 * The compiler no longer uses special default file extensions for
5184 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5185 seems to expect a single default extension for all compiled code,
5186 and there's no compelling reason to try to stretch the standard
5187 to allow two different extensions.) Instead, byte-compiled files
5188 default to the same extension as native-compiled files.
5189 * Fasl file format version numbers have increased again, because
5190 a rearrangement of internal implementation packages made some
5191 dumped symbols in old fasl files unreadable in new cores.
5192 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5193 many fewer weird special cases.
5194 * Bug #17 (differing COMPILE-FILE behavior between logical and
5195 physical pathnames) has been fixed, and some related misbehavior too,
5196 thanks to a patch from Martin Atzmueller.
5197 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5198 by Tim Moore, ported to SBCL by Martin Atzmueller.
5199 * Martin Atzmueller fixed several filesystem-related problems,
5200 including bug #36, in part by porting CMU CL patches, which were
5201 written in part by Paul Werkowski.
5202 * More compiler warnings in src/runtime/ are gone, thanks to
5203 more patches from Martin Atzmueller.
5204 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5207 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5209 * DESCRIBE now works on CONDITION objects.
5210 * The debugger now handles errors which arise when trying to print
5211 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5213 * The build system now uses an additional file, customize-target-features.lisp,
5214 to allow local modifications to the target *FEATURES* list. (The point of
5215 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5216 debugging features enabled, without having to worry about propagating it
5217 into everyone's system when I do a "cvs update".) When no
5218 customize-target-features.lisp file exists, the target *FEATURES* list
5219 should be constructed the same way as before.
5220 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5221 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5222 warn about behavior which is undefined under the ANSI spec. Note: This
5223 is specified by ANSI, but it's not very popular with programmers.
5224 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5225 macro in the SBCL sources for an example of a workaround which you
5226 might use to make portable ANSI-standard code which does what you want.
5227 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5228 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5229 when it's used as a non-toplevel form. (This is required in order
5230 to implement the DEFCONSTANT-EQX macro.)
5231 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5232 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5233 funny things, due to bugs in the implementation of EVAL-WHEN
5234 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5235 non-toplevel DEFCONSTANTs are uncommon.)
5236 * The core file version number and fasl file version number have been
5237 incremented, because the old noncompliant DEFCONSTANT behavior involved
5238 calling functions which no longer exist, and because I also took the
5239 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5240 * fixed bug 1 (error handling before read-eval-print loop starts), and
5241 redid debugger restarts and related debugger commands somewhat while
5243 ** The QUIT debugger command is gone, since it did something
5244 rather different than the SB-EXT:QUIT command, and since it never
5245 worked properly outside the main toplevel read/eval/print loop.
5246 Invoking the new TOPLEVEL restart provides the same functionality.
5247 ** The GO debugger command is also gone, since you can just invoke
5248 the CONTINUE restart directly instead.
5249 ** The TOP debugger command is also gone, since it's redundant with the
5250 FRAME 0 command, and since it interfered with abbreviations for the
5252 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5254 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5255 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5256 some porting work by Martin Atzmueller)
5257 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5258 with a boatload of patches which he ported to SBCL. Now that those
5260 ** The system tries to make sure that its low-priority messages
5261 are prefixed by semicolons, to help people who like to use
5262 syntax highlighting in their ILISP buffer. (This patch
5263 was originally due to Raymond Toy.)
5264 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5265 patches originally written by Raymond Toy.
5266 ** The compiler understands coercion between single-value and
5267 multiple-VALUES type expressions better, getting rid of some very
5268 weird behavior, thanks to patches originally by Robert MacLachlan
5269 and Douglas Crosher.
5270 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5271 lambda lists, thanks to a patch originally by Pierre Mai.
5272 ** The system no longer bogusly warns about "abbreviated type
5274 ** The compiler gets less confused by inlining and RETURN-FROM,
5275 thanks to some patches originally by Tim Moore.
5276 ** The system no longer hangs when dumping circular lists to fasl
5277 files, thanks to a patch originally from Douglas Crosher.
5278 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5279 undefined function error.
5280 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5281 in structure slot initforms) for now, documented workaround instead:-|
5282 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5283 * fixed bug 5: added stubs for various Gray stream functions called
5284 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5285 installed, at least appropriate type errors are generated
5286 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5287 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5288 consistently in DEFMETHOD forms.
5289 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5290 it doesn't seem to affect SBCL after all
5291 * The C runtime system now builds with better optimization and many
5292 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5294 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5296 * The system is now under CVS at SourceForge (instead of the
5297 CVS repository on my home machine).
5298 * The new signal handling code has been tweaked to treat register
5299 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5300 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5301 downstream, e.g. in debug-int.lisp, has implicit dependencies
5302 on the unsignedness of integer representation of machine words,
5303 and that caused the system to bomb out with infinite regress
5304 when trying to recover from type errors involving signed values,
5305 e.g. (BUTLAST '(1 2 3) -1).)
5306 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5307 (This was one of the bugs Peter Van Eynde reported back in July.)
5308 * The system now uses code inspired by Colin Walters' O(N)
5309 implementation of MAP (from the cmucl-imp@cons.org mailing
5310 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5311 inline the MAP operation, and there is more than one
5312 sequence argument to the MAP call (so that it can't just
5313 do ETYPECASE once and for all based on the type of the
5314 single sequence argument). (The old non-inline implementation
5315 of the general M-argument sequence-of-length-N case required
5316 O(M*N*N) time when any of the sequence arguments were LISTs.)
5317 * The QUIT :UNIX-CODE keyword argument has been renamed to
5318 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5319 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5321 * Raymond Wiker's patches to port dynamic loading from Linux to
5322 FreeBSD have been added.
5323 * The BUGS file is now more nearly up to date, thanks in large part
5324 to Martin Atzmueller's review of it.
5325 * The debugger now flushes standard output streams before it begins
5326 its output ("debugger invoked" and so forth).
5327 * The core version number and fasl file version number have both
5328 been incremented, because of incompatible changes in the layout
5330 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5331 used to not be called for a saved Lisp image.)
5332 * Martin Atzmueller's version of a patch to fix a compiler crash,
5333 as posted on sbcl-devel 13 September 2000, has been installed.
5334 * Instead of installing Martin Atzmueller's patch for the
5335 compiler transform for SUBSEQ, I deleted the compiler transform,
5336 and transforms for some similar consing operations.
5337 * A bug in signal handling which kept TRACE from working on OpenBSD
5339 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5340 away by constant folding
5341 * The system now defines its address space constants in one place
5342 (in the Lisp sources), and propagates them automatically elsewhere
5343 (through GENESIS and the sbcl.h file). Therefore, patching the
5344 address map is less unnecessarily tedious and error-prone. The
5345 Lisp names of address space constants have also been systematized.
5346 * CVS tags like dollar-Header-dollar have been removed from
5347 the sources, because they have never saved me trouble and
5348 they've been source of trouble working with patches and other
5349 diff-related operations.
5350 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5351 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5353 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5355 * The system has been ported to OpenBSD.
5356 * The system now compiles with a simple "sh make.sh" on the systems
5357 that it's supported on. I.e., now you no longer need to tweak
5358 text in the target-features.lisp-expr and symlinks in src/runtime/
5359 by hand, the make.sh takes care of it for you.
5360 * The system is no longer so grossly inefficient when compiling code
5361 involving vectors implemented as general (not simple) vectors (VECTOR T),
5362 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5363 which dares to use the various sequence functions on non-simple
5364 vectors, takes less of a performance hit.
5365 * There is now a primitive type predicate VECTOR-T-P
5366 to test for the (VECTOR T) type, so that e.g.
5367 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5368 can now be compiled with some semblance of efficiency. (The old code
5369 turned the type declaration into a full call to %TYPEP at runtime!)
5370 * AREF on (VECTOR T) is still not fast, since it's still compiled
5371 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5372 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5373 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5374 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5375 without making full calls to SUBTYPEP at runtime.
5376 (Some analogous efficiency issues for non-simple vectors specialized to
5377 element types other than T, or for non-simple multidimensional arrays,
5378 have not been addressed. They could almost certainly be handled the
5379 same way if anyone is motivated to do so.)
5380 * The changes in array handling break binary compatibility, so
5381 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5382 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5383 instead of (VALUES T T).
5384 * By following the instructions that Dan Barlow posted to sbcl-devel
5385 on 2 July 2000, I was able to enable primitive dynamic object
5386 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5387 functionality is not implemented (since it calls ld to resolve
5388 library references automatically, requiring RUN-PROGRAM for its
5389 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5390 try to resolve library references) is now supported.
5391 * The system now flushes the standard output streams when it terminates,
5392 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5393 them at several other probably-convenient times, e.g. in each pass of
5394 the toplevel read-eval-print loop, and after evaluating a form given
5395 as an "--eval" command-line option. (These changes were motivated by a
5396 discussion of stream flushing issues on cmucl-imp in August 2000.)
5397 * The source transform for TYPEP of array types no longer assumes
5398 that an array whose element type is a not-yet-defined type
5399 is implemented as an array of T, but instead punts, so that the
5400 type will be interpreted at runtime.
5401 * There is now some support for cross-compiling in make.sh: each of
5402 the phases of make.sh has its own script. (This should be transparent
5403 to people doing ordinary, non-cross-compile builds.)
5404 * Since my laptop doesn't have hundreds of megabytes of memory like
5405 my desktop machine, I became more motivated to do some items on
5406 my to-do list in order to reduce the size of the system a little:
5407 ** Arrange for various needed-only-at-cold-init things to be
5408 uninterned after cold init. To support this, those things have
5409 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5410 symbols with such names are now uninterned after cold init).
5411 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5412 fasl files for cold load.
5413 ** Remove the old compiler structure pooling code (which used to
5414 be conditional on the target feature :SB-ALLOC) completely.
5415 ** Redo the representation of some data in cold init to be more compact.
5416 (I also looked into supporting byte compiled code at bootstrap time,
5417 which would probably reduce the size of the system a lot, but that
5418 looked too complicated, so I punted for now.)
5419 * The maximum signal nesting depth in the src/runtime/ support code has
5420 been reduced from 4096 to 256. (I don't know any reason for the very
5421 large old value. If the new smaller value turns out to break something,
5422 I'll probably just bump it back up.)
5423 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5425 * Many, many bugs reported by Peter Van Eynde have been added to
5426 the BUGS list; some have even been fixed.
5427 * While enabling dynamic object file loading, I tried to make the
5428 code easier to understand, renaming various functions and variables
5429 with less ambiguous names, and changing some function calling
5430 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5431 * While trying to figure out how to do the OpenBSD port, I tried to
5432 clean up some of the code in src/runtime/. In particular, I dropped
5433 support for non-POSIX signal handling, added various comments,
5434 tweaked the code to reduce the number of compilation warnings, and
5435 renamed some files to increase consistency.
5436 * To support the new automatic configuration functionality in make.sh,
5437 the source file target-features.lisp-expr has been replaced with the
5438 source file base-target-features.lisp-expr and the machine-generated
5439 file local-target-features.lisp-expr.
5440 * fixed a stupid quoting error in make.sh so that using CMU CL
5441 "lisp -batch" as cross-compilation host works again
5443 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5445 * DESCRIBE no longer tries to call itself recursively to describe
5446 bound/fbound values, so that it no longer fails on symbols which are
5447 bound to themselves (like keywords, T, and NIL).
5448 * DESCRIBE now works on generic functions.
5449 * The printer now prints less-screwed-up representations of closures
5450 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5451 * A private symbol is used instead of the :EMPTY keyword previously
5452 used to mark empty slots in hash tables. Thus
5453 (DEFVAR *HT* (MAKE-HASH-TABLE))
5454 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5455 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5456 now does what ANSI says that it should. (You can still get
5457 similar noncompliant behavior if bang on the hash table
5458 implementation with all the symbols you get back from
5459 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5460 This breaks binary compatibility, since tests for equality to
5461 :EMPTY are wired into things like the macroexpansion of
5462 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5464 * There's now a minimal placeholder implementation for CL:STEP,
5465 as required by ANSI.
5466 * An obscure bug in the interaction of the normal compiler, the byte
5467 compiler, inlining, and structure predicates has been patched
5468 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5469 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5471 * Missing ordinary arguments in a macro call are now detected even
5472 when the macro lambda list contains &KEY or &REST.
5473 * The debugger no longer complains about encountering the top of the
5474 stack when you type "FRAME 0" to explicitly instruct it to go to
5475 the top of the stack. And it now prints the frame you request even
5476 if it's the current frame (instead of saying "You are here.").
5477 * As specified by ANSI, the system now always prints keywords
5478 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5480 * The default initial SIZE of HASH-TABLEs is now smaller.
5481 * Type information from CLOS class dispatch is now propagated
5482 into DEFMETHOD bodies, so that e.g.
5483 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5485 is now basically equivalent to
5486 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5487 (DECLARE (TYPE SINGLE-FLOAT X))
5489 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5490 operation, without having to do run-time type dispatch.
5491 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5492 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5493 * Since I don't seem to be making big file reorganizations very often
5494 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5495 is overflowing my ability to conveniently back them up), I've finally
5496 checked the system into CVS. (The CVS repository is on my home system,
5497 not at SourceForge -- putting it on SourceForge might come later.)
5498 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5499 high-level GC-NOTIFY-FOO functions send their output. (There's
5500 still very little control of where low-level verbose GC functions
5501 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5502 less than it used to -- the GC-NOTIFY-FOO functions are now under
5503 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5504 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5505 in only one place in the source code, and propagates it automatically
5506 everywhere that it's needed. Thus e.g. when I bump the version from
5507 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5508 * The C source files now include boilerplate legalese and documentation
5509 at the head of each file (just as the Lisp source files already did).
5510 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5511 to his page will be replaced with a link to his new CLiki service.
5513 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5515 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5516 * The build process now looks for GNU make under the default name "gmake",
5517 instead of "make" as it used to. If GNU make is not available as "gmake"
5518 on your system, you can change this default behavior by setting the
5519 GNUMAKE environment variable.
5520 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5521 can build without error under CMU CL.
5523 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5525 * There is now a partial SBCL user manual (with some new text and some
5526 text cribbed from the CMU CL manual).
5527 * The beginnings of a profiler have been added (starting with the
5528 CMU CL profiler and simplifying and cleaning up). Eventually the
5529 main interface should be through the TRACE macro, but for now,
5530 it's still accessed through vaguely CMU-CL-style functions and macros
5531 exported from the package SB-PROFILE.
5532 * Some problems left over from porting CMU CL to the new
5533 cross-compilation bootstrap process have been cleaned up:
5534 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5535 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5536 part when getting rid of the compiler *BACKEND* stuff.)
5537 ** The value of *NULL-TYPE* was screwed up, because it was
5538 being initialized before the type system knew the final
5539 definition of the 'NULL type. This screwed up several key
5540 optimizations in the compiler, causing inefficiency in all sorts
5541 of places. (I found it because I wanted to understand why
5542 GET-INTERNAL-RUN-TIME was consing.)
5543 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5544 PROCLAIM FTYPE information. Unfortunately this broke binary
5545 compatibility again, since now the forms output by DEFGENERIC
5546 to refer to functions which didn't exist in 0.6.3.
5547 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5548 can use the new (as of 0.6.3) transform for SOME into MAP into
5550 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5551 values to (INTEGER 0 1000000), so that the time code will no longer
5552 occasionally get blown up by Linux returning 1000000 microseconds
5553 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5554 its output conform to the ANSI spec. (Alas, this makes its output
5555 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5556 * A full call to MAP NIL with a single sequence argument no longer conses.
5557 * fixes to problems pointed out by Martin Atzmueller:
5558 * The manual page no longer talks about multiprocessing as though
5559 it were currently supported.
5560 * The ILISP support patches have been removed from the distribution,
5561 because as of version 5.10.1, ILISP now supports SBCL without us
5562 having to maintain patches.
5563 * added a modified version of Raymond Toy's recent CMU CL patch for
5564 EQUALP comparison of HASH-TABLE
5566 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5568 * The system still can't cross-compile itself with
5569 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5570 entails), but at least it can compile more of itself that way
5571 than it used to be able to, and various buglets which were uncovered
5572 by trying to cross-compile itself that way have now been fixed.
5573 * This release breaks binary compatibility again. This time
5574 at least I've incremented the FASL file format version to 2, so that the
5575 problem can be detected reliably instead of just causing weird errors.
5576 * various new style warnings:
5577 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5578 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5579 ** using the lexical binding of a variable named in the *FOO* style
5580 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5581 as specified by ANSI.
5582 * *RANDOM-STATE* is no longer automatically initialized from
5583 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5584 default behavior of the system is to repeat its behavior every time
5585 it's run. If you'd like to change this behavior, you can always
5586 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5587 old convention there was no comparably easy way to get the system to
5588 repeat its behavior every time it was run.
5589 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5590 FTYPE declarations has been removed, in favor of their ANSI
5591 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5592 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5593 the types of their sequence arguments can be determined at compile time.
5594 This is done through a new open code expansion for MAP which eliminates
5595 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5596 argument types can be determined at compile time.
5597 * The optimizer now transforms COERCE into an identity operation when it
5598 can prove that the coerced object is already of the correct type. (This
5599 can be a win for machine generated code, including the output of other
5600 optimization transforms, such as the MAP transform above.)
5601 * Credit information has been moved from source file headers into CREDITS.
5602 * Source file headers have been made more standard.
5603 * The CASE macro now compiles without complaining even when it has
5606 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5608 * (Note that the way that the PCL macroexpansions were rewritten
5609 to accommodate the change in DEFGENERIC below breaks binary
5610 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5611 not run under sbcl-0.6.2. Once we get out of alpha releases,
5612 i.e. hit release 1.0.0, we'll probably try to maintain binary
5613 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5614 and sbcl-1.4.4. Until then, however, it might be fairly common
5615 for maintenance releases to break binary compatibility.)
5616 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5618 * The reporting of unhandled signals has been changed to print some
5619 explanatory text as well as the report form. (Previously only
5620 the report form was printed.)
5621 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5622 it defines, so that the compiler no longer issues undefined function
5623 warnings for compiled-but-not-yet-loaded generic functions.
5624 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5625 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5626 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5627 section of the ANSI spec are supported.
5628 * The "" nickname for the "KEYWORD" package has been removed.
5629 The reader still handles symbol tokens which begin with a package marker
5630 as keywords, but it doesn't expose its mechanism for doing so in the
5631 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5632 * The system now issues STYLE-WARNINGs for contradictory TYPE
5633 proclamations. (Warnings for contradictory FTYPE proclamations would
5634 be nice too, but those can't be done usefully unless the type system
5635 is made smarter about FUNCTION types.)
5636 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5637 systematized, so that "*target-*.lisp is supposed to exist only on the
5638 target and imply that there's a related file which exists on the
5639 host, and *host-*.lisp is supposed to exist only on the host and imply
5640 that there's a related file which exists on the target. This involves a
5641 lot of renaming. Hopefully the acute confusion caused by the renaming
5642 will be justified by the reduction in chronic confusion..
5643 ** runtime-type.lisp -> early-target-type.lisp
5644 ** target-type.lisp -> late-target-type.lisp
5645 ** early-host-format.lisp -> early-format.lisp
5646 ** late-host-format.lisp -> late-format.lisp
5647 ** host-error.lisp -> misc-error.lisp
5648 ** early-error.lisp -> early-target-error.lisp
5649 ** late-error.lisp -> late-target-error.lisp
5650 ** host-defboot.lisp -> early-defboot.lisp
5651 ** code/misc.lisp -> code/target-misc.lisp
5652 ** code/host-misc.lisp -> code/misc.lisp
5653 ** code/numbers.lisp -> code/target-numbers.lisp
5654 ** code/early-numbers.lisp -> numbers.lisp
5655 ** early-host-type.lisp -> early-type.lisp
5656 ** late-host-type.lisp -> late-type.lisp
5657 ** host-typep.lisp -> typep.lisp
5658 ** load.lisp -> target-load.lisp
5659 ** host-load.lisp -> load.lisp
5660 ** host-disassem.lisp -> disassem.lisp
5661 ** host-insts.lisp -> insts.lisp
5662 ** byte-comp.lisp -> target-byte-comp.lisp
5663 ** host-byte-comp.lisp -> byte-comp.lisp
5664 ** host-signal.lisp -> signal.lisp
5665 ** host-defstruct.lisp -> defstruct.lisp
5666 ** late-target-type.lisp -> deftypes-for-target.lisp
5667 Furthermore, several other previously target-only files foo.lisp (e.g.
5668 hash-table.lisp and random.lisp) have been split into a target-and-host
5669 foo.lisp file and a target-only target-foo.lisp file, with their key type
5670 definitions in the target-and-host part, so that the cross-compiler will
5671 know more about target types.
5672 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5673 gone away. In their place are various *BACKEND-FOO* variables
5674 corresponding to the slots of the old structure.
5675 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5676 into the target SBCL has been fixed.
5677 * The chill.lisp system for loading cold code into a running SBCL
5679 * Support for the CMU CL "scavenger hook" extension has been removed.
5680 (It was undocumented and unused in the CMU CL sources that SBCL was
5681 derived from, and stale in sbcl-0.6.1.)
5682 * Various errors in the cross-compiler type system were detected
5683 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5684 (enabling various consistency checks). Many of them were fixed,
5685 but some hard problems remain, so the compiler is back to
5686 running without *TYPE-SYSTEM-INITIALIZED* for now.
5687 * As part of the cross-compiler type system cleanup, I implemented
5688 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5689 * I have started adding UNCROSS calls throughout the type system
5690 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5691 on cross-compiler input files will be able to go away, and various
5693 * CONSTANTP now returns true for quoted forms (as explicitly required
5696 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5698 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5699 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5700 (MAKE-LIST -1). In the longer term, it ought to become true
5701 that declarations are assertions even at SAFETY 1. For now, it's not
5702 quite true even at SAFETY 3, but it's at least more nearly true..
5703 (Note that this change seems to increases the size of the system by
5704 O(5%) and to decrease the speed of the compiler by 20% or more.)
5705 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5706 for the problem of printing dozens of lines of distracting information
5707 about low-level system machinery as part of the top stack frame
5708 on entry to the debugger when an undefined function was called.
5709 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5710 is not reset to COMMON-LISP-USER.
5711 * Compilation of stuff related to dyncount.lisp has been made conditional
5712 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5713 smaller. The various dyncount-related symbols have been moved into
5714 a new "SB-DYNCOUNT" package.
5715 * tty-inspect.lisp has been renamed to inspect.lisp.
5716 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5717 feature has gone away. (When we eventually port to other flavors of
5718 libc and/or Unix, we'll try to make the differences between flavors
5719 invisible at the user level.)
5720 * Various other *FEATURES* tags, and/or their associated conditionals,
5721 have been removed if obsolescent, or given better documentation, or
5722 sometimes given more-mnemonic names.
5724 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5726 * tidied up "make.sh" script
5727 * tidied up system directory structure
5728 * better "clean.sh" behavior
5729 * added doc/FOR-CMUCL-DEVELOPERS
5730 * many many small tweaks to output format, e.g. removing possibly-confusing
5731 trailing #\. character in DESCRIBE-INSTANCE
5732 * (EQUALP #\A 'A) no longer signals an error.
5733 * new hashing code, including EQUALP hashing
5734 * tidied up Lisp initialization and toplevel
5735 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5736 * command line argument processing
5737 * added POSIX-GETENV function to deal with Unix-ish environment variables
5738 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5739 terminating SBCL on EOF
5740 * non-verbose GC by default
5741 * There is no more "sbcl" shell script; the sbcl file is now the C
5742 runtime executable (just like CMU CL).
5743 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5745 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5746 symbol and package information as Lisp native symbol and package objects
5747 instead of strings naming symbols and strings naming packages. This way,
5748 whenever packages are renamed (as in warm init), debug information is
5749 transformed along with everything else.
5750 * tweaked the optimization policy declarations which control the building
5751 of SBCL itself. Now, among other things, the system no longer saves
5752 source location debugging information. (This helps two problems at once
5753 by reducing SBCL size and by keeping SBCL from trying to look for its
5754 sources -- which may not exist -- when reporting errors.)
5755 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5756 debugging and testing purposes
5757 * cleaned up printing, making the printer call PRINT-OBJECT for
5758 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5759 methods, giving nearly-ANSI behavior
5760 * converted almost all special variables to use *FOO* naming convention
5761 * deleted PARSE-TIME functionality, since it can be done portably
5762 * moved some files out of cold init into warm init
5763 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5765 * regularized formatting of source files
5766 * added an install.sh script
5767 * fixed ridiculous memory usage of cross-compiler by making
5768 compiler/alloc.lisp not try to do pooling unless it can hook
5769 itself into the GC of the cross-compilation host. Now the system
5770 builds nicely on my old laptop.
5771 * added :SB-ALLOC in target-features.lisp-expr
5772 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5773 was not implemented)
5774 * re-did condition handling and note reporting in the compiler. Notes
5775 are no longer handled by signalling conditions. Style warnings
5776 and warnings are handled more correctly and reported in such a way
5777 that it's easy to find one or the other in your output (so that you
5778 can e.g. figure out which of many problems caused COMPILE-FILE to
5780 * changed the severity of several compiler warnings from full WARNING
5781 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5782 compiler note reporting so that it doesn't use the condition system
5783 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5784 COMPILE-FILE command)
5785 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5786 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5787 no longer supported, since their implementation was deeply intertwingled
5788 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5789 * removed bogus "support" for compiler macros named (SETF FOO), and
5790 removed the compiler macro for SETF INFO (but only after making a fool
5791 of myself on the cmucl-imp mailing list by posting a bogus patch for
5792 DEFINE-COMPILER-MACRO..)
5793 * Compiled files containing forms which have side effects on the Lisp
5794 reader (such as DEFPACKAGE forms) are now handled more correctly.
5795 (Compiler queuing of top level lambdas has been suppressed by setting
5796 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5797 * deleted various currently-unused source files, e.g. gengc.lisp. They
5798 may be added back at some point e.g. when porting to other architectures,
5799 but until they are it's distracting to distribute them and to try to
5801 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5802 there were so many of them they're just distractions, and UNCROSS is
5803 known to be able to handle the current sources
5804 * moved PROFILE functionality into TRACE, so that it will be clear
5805 how the wrapping and unwrapping of functions when you profile them
5806 interacts with the wrapping and unwrapping of functions when you
5807 trace them. (Actually, the functionality isn't there yet, but at least
5808 the interface specification is there. Hopefully, the functionality will
5809 arrive with some future maintenance release.)
5810 * removed host-oops.lisp
5811 * changed signature of QUIT function to allow UNIX-CODE argument
5812 * fixed READ-SEQUENCE bug
5813 * tweaked verbose GC output so that it looks more like the progress
5814 output that ANSI specifies for functions like LOAD
5815 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5816 * added <http://sbcl.sourceforge.com> to the banner information printed by