1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.43:
3 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
4 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
5 * enhancement: ALLOCATION-INFORMATION also provides the page the object
7 * enhancement: default dynamic-space size can be configured at build-time
8 without touching source, using the --dynamic-space-size argument to make.sh.
9 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
10 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
11 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
13 * bug fix: interrupts arriving due to CL:OPEN caused an error.
14 * bug fix: overeager character buffering could cause input to block
15 spuriously when reading from a pipe (lp#643686)
16 * bug fix: more efficient timer expiry should avoid starvation on systems
17 where number of SIGALRMs per second is restricted. (lp#375515)
19 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
20 * incompatible change: FD-STREAMS no longer participate in the serve-event
21 event-loop by default. (lp#316072)
22 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
23 affects streams from CL:OPEN.
24 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
25 default, but this is liable to change: applications needing serve-event
26 for socket streams should explicitly request it using :SERVE-EVENTS T
28 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
30 * enhancement: CLOS effective method functions and defclass slot typechecking
31 function now have debug names for use in backtraces and profiles.
32 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
34 * enhancement: symbols are printed using fully qualified names in several
35 error and warning messages which are often associated with package
36 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
37 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
38 thanks to Andrew Golding)
39 * bug fix: reading /proc files on Linux works. (lp#425199)
40 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
42 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
43 breaking code that tried to write the value of a printer control variable.
44 (lp#581564, thanks to Stas Boukarev)
45 * bug fix: WRITE compiler macro did not handle output stream designators
46 correctly. (lp#598374, thanks to Stas Boukarev)
47 * bug fix: better availability of names of foreign functions in backtraces
48 on Linux. (lp#626962, thanks to Stas Boukarev)
49 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
50 lp#627581, thanks to Josh Elsasser and Jim Wise)
51 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
52 thanks to Josh Elsasser)
53 * bug fix: using aliases for builtin classes as defmethod specializers
54 without adding DEFTYPEs for them works. (lp#618387)
55 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
57 * bug fix: legally dynamic-extent lists and vectors used as
58 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
59 * bug fix: inline-expansion creating references to dead lambda-variables
60 (lp#454681, thanks to Alexey Dejneka)
61 * bug fix: better error message for bogus numerical arguments to RANDOM.
62 (lp#598986, thanks to Stas Boukarev)
63 * bug fix: the compiler occasionally inlined references from incompatible
64 environments occurs. (lp#308951)
65 * bug fix: the compiler threw an error when trying to compile a local
66 function (labels or flet) known to take a specialized complex argument.
67 (not in launchpad, reported by sykopomp in #lispgames)
68 * bug fix: package-locks failed to protect against compile-time effects of
69 DEFUN when the symbol previously had a macro definition. (lp#576637)
70 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
71 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
72 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
73 * bug fix: evaluation in debugger REPL works using the global context when
74 in frames that do not have sufficient debug information.
75 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
77 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
79 * bug fix: interrupt taking longer than the requested period caused SLEEP
80 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
82 changes in sbcl-1.0.42 relative to sbcl-1.0.41
84 ** Cross-compilation host is now specified to make.sh using
85 command-line argument --xc-host=<command> instead of a positional
86 argument. (thanks to Daniel Herring)
87 ** Install location can be specified to make.sh using command-line
88 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
89 * optimization: The default implementation of
90 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
91 * enhancement: Explicit memory barrier operations are now available for use
92 by multithreaded code. See documentation for details.
93 * enhancement: Experimental support for threading on Linux/PPC.
94 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
95 * bug fix: EXPT signals an error if first argument is a zero and second
96 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
97 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
98 (lp#576594, thanks to Roman Marynchak)
99 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
100 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
102 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
103 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
104 cached, leading to many fewer expensive calls to
105 COMPUTE-APPLICABLE-METHODS.
106 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
107 CLASS argument, search for and call an appropriate optimized ctor function
109 * bug fix: WRITE always returns the correct value.
111 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
112 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
113 * bug fix: Name conflicts between symbols passed as arguments to a single
114 call to IMPORT no longer add multiple symbols with the same name to the
115 package (detectable via DO-SYMBOLS).
116 * bug fix: support building without the dlshim on darwin x86 and x86-64
118 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
120 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
121 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
123 * bug fix: linkage-table entries on PPC now no longer overflow their
124 space allocation (potentially causing crashes if they are written out
126 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
127 platforms, preventing the GC from seeing stale pointers on the control
128 stack in subsequent GCs (which would, and does, break invariants).
129 * bug fix: 32-bit unicode external formats now work on big-endian systems.
130 * bug fix: Literal characters with code points greater than about 32767
131 now work on PPC UNICODE builds.
132 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
133 high order bits are explicitly cleared out. In some contrived situations,
134 this could lead to wrong results in mixed real/complex float arithmetic.
135 * bug fix: Fix function/macro redefinition warnings when building with
136 clisp. (lp#576787, thanks to Josh Elsasser)
137 * new platform: experimental support for ppc/openbsd (thanks to Josh
139 * bug fix: Floating-point traps now work on ppc/linux.
141 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
142 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
143 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
144 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
145 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
146 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
147 SB-THREAD:GRAB-MUTEX.
148 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
149 contain additional data structures and tools for concurrent programming;
150 at the moment it contains a lock-free queue, and a lock-free mailbox
152 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
153 GET-MUTEX but takes &key rather than &optional parameters. Also added
154 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
156 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
157 SB-THREAD:WAIT-ON-SEMAPHORE.
158 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
160 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
161 conditions to defer the deadline for forever.
162 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
164 * enhancement: errors from NO-APPLICABLE-METHOD and
165 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
166 generic function call.
167 * enhancement: SB-BSD-SOCKET improvements
168 ** sockets and socket streams now have a more informative printed
169 representation based on the corresponding SOCKET-NAME and
171 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
173 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
174 CL:CLOSE when appropriate, and no longer disassociates the stream
175 from the socket if close failed. (lp#543951)
176 * improvements to the instrumenting profiler
177 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
178 ** optimization: counters no longer use locks for the overflow mode.
179 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
180 incurred an off-by-one miscount.
181 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
182 * enhancement: improved DEFMETHOD pretty-printing.
183 * enhancement: perform range reduction when arguments are too large for
184 x87's transcendentals (instead of returning 0). (lp#327192)
185 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
186 some of CL-PPCRE's macros. (lp#570079)
187 * enhancement: our machine code is slightly less hostile to valgrind on
189 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
190 to Robert Swindells and Aleksej Saushev)
191 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
192 * bug fix: a rare case of startup-time page table corruption.
193 * bug fix: a semaphore with multiple waiters and some of them unwinding due
194 to timeouts could be left in an inconsistent state.
195 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
196 * bug fix: misoptimization of multiplication by one in
197 (SB-C::FLOAT-ACCURACY 0) policies.
198 * bug fix: miscounts in SB-PROFILE.
199 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
200 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
201 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
202 up itself" (March 2010) for further details.
203 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
204 against length of the list if the element is found before the specified
205 END is reached. (thanks to Alec Berryman, lp#554385)
206 * bug fix: errors signalled during package graph modification no longer
207 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
208 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
209 :SB-DOC feature. (lp#552564)
210 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
211 * bug fix: more robust runtime executable path detection. (lp#375549)
212 * bug fix: GCD always returns positive values. (lp#413680)
213 * bug fix: Converting division to multiplication by reciprocal handles
215 * bug fix: We were too eager in eliding range reduction tests on x87.
216 The maximal magnitude is 2^63, not 2^64.
217 * bug fix: Transforms for TRUNCATE don't die when the result is completely
219 * bug fix: Maybe restore buildability on Alpha.
220 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
222 * bug fix: RANDOM-STATE can be printed readably again.
223 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
224 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
225 types) could result in type mismatches during compilation.
227 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
228 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
229 stack frame thrown from.
230 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
231 compiler optimization qualities inside dynamic extent of its body.
232 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
233 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
235 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
236 constraint propgation, allowing better compilation eg. when used to
237 access structures with WITH-SLOTS. (lp#520366)
238 * optimization: the compiler is now more aware of the type of the underlying
239 storage vector for multidimensional simple arrays resulting in better code
240 for accessing such arrays.
241 * optimization: passing NIL as the environment argument to TYPEP no longer
242 inhibits optimizing it. (lp#309788)
243 * optimization: more efficient register usage when handling single-float
244 arguments on x86-64. (thanks to Lutz Euler)
245 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
246 pre-allocated temporary vectors. (lp#496249)
247 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
248 in :INITIAL-CONTENTS. (lp#523612)
249 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
250 functions. (lp#524707)
251 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
252 WITH-SLOTS usages during compilation.
253 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
254 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
255 all x86oid platforms with :UD2-BREAKPOINTS target feature.
256 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
257 instruction (tested on x86oid linux with ud2-breakpoints).
258 * bug fix: slam.sh now works on win32.
259 * bug fix: better differences of numeric types. (lp#309124)
260 * bug fix: arrays declared intersection and union types can have their
261 upgraded element type derived. (lp#316078)
262 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
263 threads started during profiling. (lp#472499)
264 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
266 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
267 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
268 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
269 values instead of signaling an error. (lp#309093)
270 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
272 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
273 declarations (lp#497321)
274 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
275 and failed to detect circular lists (lp#452008)
276 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
278 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
279 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
280 due to it, so that handlers can run.
281 * bug fix: reparsing undefined types if they have become defined since
283 * bug fix: missing &REST type in a proclamation for a function with both
284 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
285 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
286 expanded calls (lp#542174)
287 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
288 than just at toplevel form.
290 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
291 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
292 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
293 but work on type specifiers.
294 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
295 to name a type specifier.
296 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
297 specifier is valid where "valid" basically means "would be accepted as
298 second argument of TYPEP".
299 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
300 returns the function's declared, or derived FTYPE.
301 * new feature: SB-POSIX now supports accessing the d_ino member of
302 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
303 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
304 provide for seeding a RANDOM-STATE object with user-provided data or
305 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
306 attempt to initialize the returned state from the operating system's
307 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
308 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
309 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
310 * bug fix: Fix grammar and style issues for the docstrings of
311 printer-related variables and functions. (Thanks to mon_key; launchpad
313 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
315 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
316 in a row even though a handler defered the deadline long into the
318 * bug fix: A deadline handler was run without interrupts enabled for a
319 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
320 in infinitely spinning, non-killable threads.
321 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
322 before reaching the erring stack frame.
323 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
324 real power. (launchpad bug lp#525949)
325 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
326 GENCGC platforms. (launchpad bug lp#529014)
327 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
328 (launchpad bug lp#525916)
329 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
330 (Thanks to Robert Goldman)
332 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
333 * optimization: ROUND with a single single-float or double-float argument
334 is properly inlined when possible.
335 * optimization: Slightly better code is generated for integer<->float
336 conversions and for single-float<->double-float conversions on x86-64.
337 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
338 code for 32-bit and 64-bit rotations on x86-64.
339 * bug fix: The install script changes the ownership of directories as well
340 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
341 launchpad bug lp#508485)
342 * bug fix: TRUNCATE with a single single-float or double-float argument is
343 properly inlined when possible. (launchpad bug lp#489388)
344 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
345 no longer causes a compiler error on x86 and ppc.
346 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
347 always relative to *READTABLE* rather than the passed argument.
349 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
350 * minor incompatible change: threading support is now enabled by default
352 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
354 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
355 are now caught and reported just like errors during macroexpansion.
356 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
357 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
358 * enhancement: ASDF systems can now depends on SB-QUEUE.
359 * fixes and improvements related to Unicode and external formats:
360 ** bug fix: error handling and restart usage in the ucs-2 external format
362 ** there is now an implementation of the ucs-4 external format.
363 ** the utf-16 and utf-32 external formats are supported.
364 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
365 in the environment. setenv() and unsetenv() are also provided. (reported by
366 Fare Rideau; launchpad bug lp#460455)
367 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
368 loading. This ensures sensible errors for .FASL files from other
369 implementations on case-insensitive filesystems. (reported by Willem
370 Broekema; launchpad bug lp#489417)
371 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
372 Willem Broekema; launchpad bug lp#489698).
373 * bug fix: some minor code rearrangements to reenable warning-free building
374 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
375 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
377 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
380 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
381 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
382 * improvement: support O_LARGEFILE access to files larger than 2GB on
383 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
384 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
385 definitions for methods specializing on the passed class itself.
386 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
387 definitions for methods specializing on the passed class itself, or on
389 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
390 about itself during the build (e.g. for M-? in Slime), if this flag is
391 enabled in customize-target-features.lisp. This will increase the core
392 size by about 5-6mb, though, so it's mostly interesting to SBCL
394 * new feature: various GENCGC tuning parameters have been experimentally
395 documented and exported from SB-EXT. See documentation for details.
396 * fixes and improvements related to Unicode and external formats:
397 ** the Unicode character database has been upgraded to the
398 Unicode 5.2 standard, giving names and properties to a number of new
399 characters, and providing a few extra characters with case
401 ** improvement: restarts for providing replacement input/output on coding
402 errors for fd-stream external formats.
403 ** improvement: where :<encoding> is a keyword corresponding to an
404 external format the system supports, it is now possible to specify
405 (:<encoding> :replacement <character>) as an external format which will
406 automatically substitute <character> on encoding or decoding errors for
407 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
409 ** improvement: the file streams underlying the standard streams (such as
410 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
411 which uses the replacement mechanism to handle encoding errors,
412 preventing various infinite error chains and unrecoverable I/O
414 ** minor incompatible change: the utf-8 external format now correctly
415 refuses to encode Lisp characters in the surrogate range (char-codes
416 between #xd800 and #xdfff).
417 ** fix a typo preventing conversion of strings into octet vectors
418 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
420 ** fix a bug in the octet multibyte handling of decoding errors and the
421 USE-VALUE restart. (launchpad bug lp#314939)
422 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
423 restart on fd-stream decoding errors.
424 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
425 error is near the end of file.
426 ** fix a double-error case in unibyte octet conversions, when the first
427 use of USE-VALUE is ignored.
428 ** fix bugs in handling of undefined code points in unibyte encodings.
429 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
430 streams after an UNREAD-CHAR.
431 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
432 object is allocated in a boxed region of dynamic space.
433 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
434 fork with multiple Lisp threads running is made, instead of going
435 ahead with unpredictable consequences. (reported by Leslie Polzer)
436 * bug fix: uses of slot accessors on specialized method parameters within
437 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
438 error while finalizing the class. This fix may cause classes with slot
439 accessors to be finalized later than previously. (reported by Lars Rune
440 Nøstdal; launchpad bug lp#473699)
441 * bug fix: restore buildability on the MIPS platform. (regression from
442 1.0.30.38, reported by Samium Gromoff)
443 * bug fix: inspecting closures is less likely to fail with a type error.
444 * bug fix: no timer starvation when setting the system clock back.
445 (launchpad bug lp#460283)
446 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
447 standard pprint dispatch table as specified by CLHS.
448 * bug fix: give CLISP a hint about a type declaration to enable it to build
449 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
451 * bug fix: correctly dump literal objects in defaulting forms of arglists.
452 (reported by Attila Lendvai; launchpad bug lp#310132)
453 * bug fix: distinguish in type specifiers between arrays that might be
454 complex and arrays that are definitely complex. (launchpad bug lp#309129)
455 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
456 type. (reported by Levente Mészáros; launchpad bug lp#485972)
457 * bug fix: setting the value of a symbol-macro within a method in the
458 presence of type declarations works properly again. (reported by Iban
459 Hatchondo; launchpad bug lp#485019)
461 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
462 * optimization: faster FIND and POSITION on strings of unknown element type
463 in high SPEED policies. (thanks to Karol Swietlicki)
464 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
466 * improvement: better error signalling for bogus parameter specializer names
467 in DEFMETHOD forms (reported by Pluijzer)
468 * bug fix: DELETE-FILE once again works on logical pathnames (regression
470 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
472 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
473 removes previous default initargs (reported by Lars Rune Nøstdal and
475 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
476 lambda-lists. (reported by Peter Seibel)
477 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
478 correctly when starting from an executable core without saved runtime
479 options (reported by Faré Rideau, thanks to Zach Beane)
480 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
481 an optimization note instead. (reported by Martin Cracauer)
482 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
483 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
484 new process group if it doesn't need to share stdin with the sbcl
485 process. (thanks to Leslie Polzer)
486 * bug fix: SATISFIES could be misoptimized to refer to a local function.
487 (reported by Stanislaw Halik)
489 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
490 * improvement: stack allocation is should now be possible in all nested
491 inlining cases: failure to stack allocate when equivalent code is manually
492 open coded is now considered a bug.
493 * improvements related to Unicode:
494 ** the Unicode character database has been upgraded to the
495 Unicode 5.1 standard, giving names and properties to a number of new
496 characters, and providing a few extra characters with case
498 ** the system now recognizes and produces names for Unicode Hangul
500 ** the EBCDIC-US external-format is now supported for octet operations
501 (as well as for stream operations).
502 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
503 be used to output toplevel compile-time effects into a separate .CFASL
505 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
506 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
508 * optimization: TRUNCATE on known single- and double-floats is upto 25%
510 * optimization: division of floating point numbers by constants uses
511 multiplication by reciprocal when an exact reciprocal exists.
512 * optimization: multiplication of single- and double-floats floats by
513 constant two has been optimized.
514 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
515 sufficient type information is available. (thanks to Leslie Polzer)
516 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
517 known structure objects are as efficient as defstruct generated accessors.
518 * optimization: unused vector creation can now be optimized away.
519 * improvement: ASDF systems can now depends on SB-INTROSPECT.
520 * improvement: a STYLE-WARNING is signalled when a generic function
521 clobbers an earlier FTYPE proclamation.
522 * improvement: the compiler is able to track the effective type of
523 generic function across method addition and removal even in the
524 absence of an explicit DEFGENERIC.
525 * improvement: DESCRIBE now reports on symbols naming undefined
526 but assumed or declared function as well.
527 * improvement: recompilation of systems using SB-GROVEL now works
528 (thanks to Leslie Polzer)
529 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
530 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
532 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
533 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
534 well as user defined declaration names.
535 ** VARIABLE-INFORMATION is now aware of alien variables.
536 * improvement: improved address space layout on OpenBSD (thanks to Josh
538 * improvement: pretty-printing of various Lisp forms has been improved
539 (thanks to Tobias Rittweiler)
540 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
541 unused were deleted in safe code. (reported by John Fremlin)
542 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
544 * bug fix: some out-of-line array predicates were missing (reported by
546 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
548 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
549 (thanks to Larry D'Anna)
550 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
551 as well. (reported by Josh Elsasser)
552 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
553 leading to possible attempts to delete the same file twice. See docstring
554 on DELETE-FILE for details. (reported by John Fremlin)
555 * bug fix: DELETE-FILE once again deletes the file named by the pathname
556 designator argument, rather than its truename. (reported by Luis
558 * bug fix: the low-level debugger had 32-bit assumptions and was missing
559 information about some array types. (thanks to Luis Oliveira)
560 * bug fix: moderately complex combinations of inline expansions could
561 be miscompiled if the result was declared to be dynamic extent.
562 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
563 form (+ <variable> <integer>) were miscompiled under certain
565 * bug fix: in some cases no compiler note about failure to stack allocate
566 was emitted, even if the objects were in fact heap allocated.
567 * bug fix: minor violation of "otherwise inaccessible" rule for stack
568 allocation could cause objects users might reasonably expect to
569 be heap allocated to be stack allocated.
570 * bug fix: DESCRIBE signalled an error for generic functions under
571 certain circumstances. (thanks to Leslie Polzer)
572 * bug fix: Fixed spelling of an error message.
574 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
575 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
576 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
577 of SB-THREAD:THREAD-ERROR-THREAD.
578 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
579 * new feature: docstrings for local and anonymous functions are no longer
580 discarded. (thanks to Leslie Polzer)
581 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
582 values in other threads.
583 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
584 about object allocation.
585 * optimization: division of a real float by a complex float is implemented
586 with a specialised code sequence.
587 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
588 keywords is an order of magnitude faster.
589 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
590 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
591 methods, and similarly for non-standard metaclass classes as long as there
592 are no methods additional on MAKE-INSTANCE.
593 * optimization: more efficient type-checks for FIXNUMs when the value
594 is known to be a signed word on x86 and x86-64.
595 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
596 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
598 * optimization: compiler is smarter about delegating argument type checks to
600 * optimization: several character functions are now compiled somewhat more
601 efficiently. (reported by Lynn Quam)
602 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
603 * improvement: less unsafe constant folding in floating point arithmetic,
604 especially for mixed complex/real -float operations.
605 * optimization: constant double and single floats are stored in native
606 unboxed format on x86[-64].
607 * optimization: smarter code for arithmetic operations with constant floats,
608 complex floats, or integers on x86[-64].
609 * optimization: smarter code for conjugate/multiplication of float complexes
610 and abs/negate of floats on x86-64.
611 * optimization: more efficient complex float and real float operations on
613 * improvement: complex float division is slightly more stable.
614 * improvement: DESCRIBE output has been reworked to be easier to read and
615 contains more pertinent information.
616 * improvement: failure to provide requested stack allocation compiler notes
617 provided in all cases (requested stack allocation not happening without a
618 note being issued is now considered a bug.)
619 * bug fix: SB-POSIX exports the documented types and functions
620 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
621 types. (reported by "abhi")
622 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
623 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
624 (thanks to Paul Khuong)
625 * bug fix: looping around HANDLER-CASE could silently consume stack space
626 on each iteration. (reported by "foobar")
627 * bug fix: better error signalling when calls to functions seeking elements
628 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
629 (reported by Tobias Rittweiler)
630 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
631 directory components now works as it used to. (various prolems reported by
632 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
633 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
634 (reported by Elliot Slaughter, thanks to Stas Boukarev)
635 * bug fix: bogus undefined variable warnings from fopcompiled references to
636 global variables. (thanks to Lars Rune Nøstdal)
637 * bug fix: foreign function names should now appear in backtraces on
638 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
639 * bug fix: SETF compiler macro documentation strings are not discarded
641 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
642 (thanks to Alex Plotnick)
643 * bug fix: SLEEP accepts large integer arguments, truncating them to
644 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
645 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
646 * bug fix: compiler notes for expensive slot type checks could be emitted
647 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
649 changes in sbcl-1.0.29 relative to 1.0.28:
650 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
651 https://bugs.launchpad.net/sbcl
652 Bugs can be reported directly there, or by sending email to
653 sbcl-bugs@lists.sourceforge.net
654 (no subscription required.)
655 * minor incompatible change: under weak type checking policy integer
656 types are weakened less aggressively.
657 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
658 allowed to return, which causes SBCL to quit with exit status 0. Previously
659 if the function returned with a small integer return value, that value
660 was accidentally reused as the exit status.
661 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
662 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
663 :HASH-FUNCTION argument. Refer to user manual for details.
664 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
666 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
667 microseconds since the Unix epoch on all platforms.
668 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
669 allows the compiler to safely elide boundedness checks for special
671 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
672 the symbol, prohibits both lexical and dynamic binding. This is mainly an
673 efficiency measure for threaded platforms, but also valueable in
675 * new feature: UNC pathnames are now understood by the system on Windows.
676 * optimization: the compiler uses a specialized version of FILL when the
677 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
679 * optimization: accesses to potentially non-simple arrays where element type
680 is known are 50% faster.
681 * optimization: compiler now generates faster array typechecking code.
682 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
684 * optimization: multidimensional array accesses in the absence of type
685 information regarding array rank are approximately 10% faster due to
686 open coding of ARRAY-RANK.
687 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
688 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
690 * optimization: result of call to VECTOR can now be stack allocated.
691 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
692 as long as the resulting array is one-dimensional and has a known
693 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
694 length of the list matches the known length of the vector does not
695 allocate the list as an intermediate step. Ditto for VECTOR and simple
697 * optimization: MAKE-ARRAY can now stack allocate in the presence of
698 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
699 known element type, and is known to be simple and one dimensional.
700 * improvement: SBCL now emits a compiler note where stack allocation was
701 requested but could not be provided (not in all cases, unfortunately)
702 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
703 * improvement: pretty-printing loop has been implemented properly. (thanks
704 to Tobias Rittweiler)
705 * documentation: CLOS slot typechecing policy has been documented.
706 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
707 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
708 pointer, leading to memory faults. (thanks to Bart Botta)
709 * bug fix: better floating point exception handling on x86/OpenBSD.
710 (thanks to Josh Elsasser)
711 * bug fix: exit status from QUIT when called under --script was lost
712 (reported by Hubert Kauker)
713 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
714 same implementation of FILL to initialize the array, even if a more
715 efficient one was available (reported by Stas Boukarev, thanks to
717 * bug fix: potential miscompilation of array stack allocation on x86 and
718 x86-64. (reported by Time Tossavainen)
719 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
720 result in their subforms being treated as top level forms. (reported by
722 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
723 than a machine register could leave garbage in the high bits of the
724 result register (bug 316325).
725 * bug fix: disable address space randomization Linux/x86-64 as well,
726 not just x86-64. (reported by Ken Olum)
727 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
728 generate incorrect code.
729 * bug fix: #201; type inference for CONS and ARRAY types could derive
730 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
731 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
732 could not be assigned to or bound with PROGV. (reported by Lorenz
734 * bug fix: the value of CL:- in the inspector was the previous expression
735 evaluated rather than the expression being evaluated.
736 * bug fix: constants can no longer be locally declared special.
737 * bug fix: signals delivered to threads started from foreign land (read:
738 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
739 thread by blocking all signals and resignalling.
740 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
741 from :INITFORM, if any.
743 changes in sbcl-1.0.28 relative to 1.0.27:
744 * a number of bugs in cross-compilation have been fixed, with the ultimate
745 result that building under (at least) clisp should be much more reliable.
746 * minor incompatible changes: echo-streams now propagate unread-char to the
747 underlying input stream, and no longer permit unreading more than one
749 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
750 frames, allowing for instance more reliable backtraces.
751 * improvement: the debugger REPL can now reference lexical variables
752 by name directly for code compiled with (DEBUG 3).
753 * improvement: errors from malformed declarations now have better source
754 paths associated with them. (thanks to Tobias Rittweiler)
755 * optimization: faster local calls on x86/x86-64
756 * bug fix: some error messages for out-of-bound array indexes confused the
757 index and the bound. (thanks to Stas Boukarev)
758 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
760 * bug fix: running regressions tests in shells without OSTYPE set now works.
761 (reported by Harald Hanche-Olsen)
762 * bug fix: more robust static space exhaustion signalling from
763 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
764 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
765 docstring away instead of storing it under names such as (LAMBDA (X)).
766 (reported by Leslie Polzer)
767 * bug fix: timers could go off in the wrong order, be delayed indefinitely
768 (thanks to Ole Arndt for the patch)
769 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
770 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
771 potentially-invalid effective methods in its cache.
772 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
773 instances as well (thanks to Paul Khuong)
774 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
775 SB-POSIX:WAITPID and their C equivalents.
776 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
778 changes in sbcl-1.0.27 relative to 1.0.26:
779 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
780 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
781 * improvement: the system either recovers from stack exhaustion or dies
782 properly as opposed to leaving the user uncertain of whether the handler
783 trampled on some random memory next to the stack or having to rely on
784 --lose-on-corruption (which is still a good idea to use in production
785 because stack exhaustion can happen in signal handlers which will likely
787 * bug fix: fix gc related interrupt handling bug on ppc (regression from
788 1.0.25.37, reported by Harald Hanche-Olsen)
789 * bug fix: work around signal delivery bug in darwin (regression from
790 1.0.25.44, reported by Sidney Markowitz)
791 * bug fix: fix ERROR leaking memory (reported by David Thompson)
793 changes in sbcl-1.0.26 relative to 1.0.25:
794 * incompatible change: an interruption (be it a function passed to
795 INTERRUPT-THREAD or a timer function) runs in an environment where
796 interrupts can be enabled. The interruption can use
797 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
798 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
799 potentially running out of stack. Keep in mind that in the absence
800 of WITHOUT-INTERRUPTS some potentially blocking operation such as
801 acquiring a lock can enable interrupts.
802 * incompatible change: GC-OFF and GC-ON are removed, as they were
803 always unsafe. Use WITHOUT-GCING instead.
804 * new feature: runtime option --disable-ldb
805 * new feature: runtime option --lose-on-corruption to die at the
806 slightest hint of possibly non-recoverable errors: running out of
807 memory, stack, alien stack, binding stack, encountering a memory
808 fault, etc. In the absence of --lose-on-corruption a warning is
810 * enhancement: detect binding stack exhaustion
811 * enhancement: detect alien stack exhaustion on x86/x86-64
812 * improvement: generally more stable and reliable interrupt handling
813 * improvement: there is a per thread interruption queue,
814 interruptions are executed in order of arrival
815 * improvement: a repeating timer reschedules itself when the it has
816 finished, but expiration times are spaced equally. If an
817 expiration time is in the past it will trigger after a short grace
818 period that may give a chance to other things to run.
819 * optimization: slightly faster gc on multithreaded builds
820 * optimization: faster WITHOUT-GCING
821 * bug fix: when JOIN-THREAD signals an error, do it when not holding
822 important locks so that the debugger/handler doesn't produce
823 recursive errors or deadlock.
824 * bug fix: real-time signals are not used anymore, so no more
825 hanging when the system wide real-time signal queue gets full.
826 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
828 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
829 * bug fix: fix random memory faults related to interrupts on alpha
830 * bug fix: fix random memory faults related to interrupts on sparc
831 * bug fix: fix deadlocks related to starting threads
832 * bug fix: fix deadlines on locks on futex platforms
833 * bug fix: restore errno in signal handlers
834 * bug fix: fix deadlocks related to hash tables
835 * bug fix: fix deadlocks in pcl
837 changes in sbcl-1.0.25 relative to 1.0.24:
838 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
839 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
840 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
841 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
842 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
843 better name and does not return values so stale on multiprocessor systems.
844 Also, HOLDING-MUTEX-P was added for about the only sane usage of
846 * improvement: unithread builds keep track of MUTEX-VALUE.
847 * improvement: reading from a TWO-WAY-STREAM does not touch the output
848 stream anymore making it thread safe to have a concurrent reader and
849 a writer, for instance, in a pipe.
850 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
851 arguments, making compiler-macros for SETF-functions able to inspect
852 their constant arguments.
853 * improvement: COMPILE-FILE reports times with millisecond accuracy
854 (thanks to Luis Oliveira)
855 * optimization: CHAR-CODE type derivation has been improved, making
856 TYPEP elimination on subtypes of CHARACTER work better. (reported
857 by Tobias Rittweiler, patch by Paul Khuong)
858 * bug fix: setting alien structure fields of type struct by value now
859 computes the right offset for the memory copy.
860 * bug fix: compilation problem involving inlined calls to aliens with
861 result type VOID. (reported by Ken Olum)
862 * bug fix: #235a; sequential inline expasion in different policies no
863 longer reuses the functional from the previous expansion site.
864 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
865 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
866 * bug fix: named ENUMs in multiply-referenced alien record types no longer
867 cause an implied type redefinition. Regression from 1.0.21.29.
868 * bug fix: sign-extension of small signed return values now works with C
869 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
870 * improvements to the Windows port:
871 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
872 Westfold, thanks to Rudi Schlatte)
874 changes in sbcl-1.0.24 relative to 1.0.23:
875 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
876 vector of a multidimensional SIMPLE-ARRAY.
877 * new feature: the system now signals a continuable error if standard
878 readtable modification is attempted. (thanks to Tobias Rittweiler)
879 * new feature: DIRECTORY has been extended with a non-standard keyword
880 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
881 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
882 has been robustified and documented better. (thanks to Robert Goldman)
883 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
884 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
885 * tradeoff: constant FORMAT control strings are now compiled unless
886 SPACE > SPEED (previously only when SPEED > SPACE.)
887 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
889 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
891 * bug fix: lexical type declarations are now correctly reported by
892 SB-CLTL2. (reported by Larry D'Anna)
893 * bug fix: STRING-TO-OCTETS did not handle :START properly when
894 using UTF-8 as external format. (thanks to Luis Oliveira)
895 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
896 are signalled correctly. (thanks to Stas Boukarev)
897 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
898 designator. (thanks to Tobias Rittweiler)
899 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
900 designator, and returns T instead of the function. (thanks to
902 * bug fix: direct superclasses of STANDARD-CLASS and
903 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
904 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
905 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
906 when no class with the named slot yet exists no longer causes a
907 compile-time style-warning.
908 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
909 in safe code. (reported by Didier Verna)
910 * bug fix: #430; nested structure constructors can stack allocate.
911 * bug fix: on some 64-bit platforms dynamic space size was truncated
912 to #xffff0000 bytes. (reported by Benjamin Lambert)
913 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
914 REPL unusable. (reported by Daniel Herring)
915 * bug fix: return values of READ-SEQUENCE did not take :START into
916 account on file streams, regressions since 1.0.12.22. (reported by
917 Thomas Russ, patch by Paul Khuong)
918 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
919 method specializer used to confuse permuation vector optimization.
920 * bug fix: system inserted bogus implicit type declarations for local
921 special variables in DEFMETHOD bodies.
922 * bug fix: #354; duplicated frames in backtraces due to
923 non-tail-call-optimized XEPs to functions with return type NIL
925 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
926 initializes structure object slots according to DEFSTRUCT initforms,
927 and DEFSTRUCT forms :INCLUDEind structure classes defined using
928 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
929 (reported by Bruno Haible and Stephen Wilson)
930 * bug fix: #395; fill-pointer output streams used now support
931 element-type BASE-CHAR as well.
932 * bug fix: compiler error when attempting to derive return value of
933 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
935 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
937 * bug fix: Mac OS X binaries should now be portable between Leopard
940 changes in sbcl-1.0.23 relative to 1.0.22:
941 * enhancement: when disassembling method functions, disassembly
942 for the associated fast function is also produced.
943 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
945 * optimization: printing with *PRINT-PRETTY* true is now more
946 efficient as long as the object being printed doesn't require
947 special handling by the pretty printer.
948 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
949 now interact correctly with type declarations.
950 * partial bug fix: PCL detects infinite recursion during wrapper
951 validation. (thanks to Attila Lendvai)
952 * bug fix: #426; nested function calls are inlined properly.
953 Previously if FOO was an inline function, in calls of the form
954 (FOO (FOO ...)) the outer call was not inlined.
955 * bug fix: long long arguments passed in registers to alien
956 functions on PowerPC Linux and NetBSD are now handled correctly
957 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
959 changes in sbcl-1.0.22 relative to 1.0.21:
960 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
961 for the shared object in the current directory, but passes the native
962 namestring of the designated pathname to the operation system's shared
963 object loading function as-it.
964 * minor incompatible change: --disable-debugger toplevel option now takes
965 effect before processing of initialization files and --eval or --load
967 * new feature: new commandline argument: --script, which supports
968 shebang lines. See documentation for details. (based on work by
970 * new feature: SAVE-LISP-AND-DIE can save current values of
971 --dynamic-space-size and --control-stack-size in the executable core,
972 causing it to skip normal runtime option processing. See documentation
973 for details. (thanks to Zach Beane)
974 * enhancement: inoccous calls to EVAL or generic functions dispatching
975 on subclasses of eg. STREAM no longer cause compiler notes to appear.
976 * enhancement: the system no longer resignals errors from --load and
977 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
978 associated with the original error to be lost. (thanks to Ariel
980 * enhancement: :DONT-SAVE keyword argument has been added to
981 LOAD-SHARED-OBJECT for controlling interaction with
982 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
983 the effects of an earlier LOAD-SHARED-OBJECT call.
984 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
985 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
986 provided. (reported by Cedric St-Jean)
987 * bug fix: circularity handling in the reader did not treat raw
988 structure slots correctly. (reported by Cedric St-Jean)
989 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
990 file descriptors when there were none.
991 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
992 was broken. (reporteed by Willem Broekema)
993 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
994 pathnames without a directory.
995 * bug fix: COMPILE-FILE did not warn about undefined variable
996 references at toplevel, and LOAD of the resulting fasl did
998 * bug fix: functions with non-required arguments used to end up with
999 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1000 * bug fix: redefining a function with non-required arguments didn't
1001 update the system's knowledge about its call signature properly.
1002 * bug fix: fixed #431; incompatible alien record type redefinitions
1003 are detected and handled. (reported by Neil Haven)
1004 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1005 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1007 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1008 after alien stack frames.
1009 * bug fix: strings passed to mk{s,d}temp lacked null termination
1011 changes in sbcl-1.0.21 relative to 1.0.20:
1012 * new feature: the compiler is able to track the effective type of a
1013 generic function across method addition and removal.
1014 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1015 appropriately typed structure slots without locking.
1016 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1017 information like those gathered by TIME using a programming-friendly
1019 * new feature: TIME reports time taken even if the form performs a
1020 non-local transfer of control.
1021 * enhancement: reduced conservativism on GENCGC platforms: on
1022 average 45% less pages pinned (measured from SBCL self build).
1023 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1024 mutate constant symbols or violate declaimed type of the symbol.
1025 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1026 sleeping on the semaphore in heavily contested semaphores.
1027 * bug fix: semaphores and condition variables were not interrupt
1029 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1030 owned by other threads anymore.
1031 * bug fix: FIND on lists called KEY outside the specified
1032 subsequence. (reported by budden)
1033 * bug fix: LOG doesn't use single-float intermediate results when
1034 given mixed integer and double-float arguments, leading to better
1035 precision. (reported by Bob Felts)
1036 * bug fix: LOG with base zero returned values of inconsistent type.
1038 changes in sbcl-1.0.20 relative to 1.0.19:
1039 * minor incompatible change: OPTIMIZE qualities
1040 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1041 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1042 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1043 * documentation: some slot access efficiency guidelines have been
1044 added to the user manual.
1045 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1046 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1047 as ASSOC and MEMEBER.
1048 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1049 to more efficient EQ-comparison versions more often.
1050 * optimization: enhanced derivation of DOLIST iteration variable type
1052 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1054 * optimization: runtime lookup of function definitions can be
1055 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1056 * optimization: compiler is able to derive the return type of
1057 (AREF (THE STRING X) Y) as being CHARACTER.
1058 * optimization: CLRHASH on empty hash-tables no longer does pointless
1059 work. (thanks to Alec Berryman)
1060 * optimization: REPLACE deftransforms don't punt when :START1 or
1062 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1063 no longer emits a code deletion note. (reported by Andrew
1065 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1066 functions with an odd number of &OPTIONAL arguments, a &REST
1067 argument, and one or more &KEY arguments at the call site.
1068 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1069 arguments appeared at call sites as well.
1070 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1071 READ-LINE &co can no longer read from them afterwards. (reported
1073 * bug fix: fixed #427: unused local aliens no longer cause compiler
1074 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1076 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1077 alien-stack leakage. (reported by Andy Hefner)
1078 * bug fix: PROGV signals an error when an attempt to violate declared
1079 type of a variable or bind a constant is made.
1080 * bug fix: SET signals an error when an attempt to violate declared
1081 type of a variable is made.
1082 * bug fix: restart computation during the execution of a restart
1083 test function no longer causes infinite recursion. (reported by
1085 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1086 signals an error. (thanks to Pierre Mai)
1087 * bug fix: EXPORT left symbol unexported in conflict situations.
1088 (thanks to Michael Weber)
1089 * bug fix: correctly handle name conflicts involving CL:NIL.
1090 (thanks to Michael Weber)
1091 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1092 conflicts arising from USEing package with conflicting symbols
1093 correctly. (thanks to Michael Weber)
1095 changes in sbcl-1.0.19 relative to 1.0.18:
1096 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1097 warnings that go otherwise unhandled will be muffled if they are
1098 of the type that's the value of this variable.
1099 * optimization: stack allocation is slightly more efficient on x86
1101 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1102 where a raw slot always is initialized using the initform whose
1103 type is not know sufficiently well a compile-time are now compiled
1104 correctly. (reported by John Morrison)
1105 * bug fix: compiler no longer makes erronous assumptions in the
1106 presence of non-foldable SATISFIES types.
1107 * bug fix: stack analysis missed cleanups of dynamic-extent
1108 arguments in non-let-converted calls to local functions.
1109 * improvements to the Windows port:
1110 ** adjusted address spaces for building on both Win32 and
1111 Win64. (thanks for John Connors)
1112 * fixed some bugs revealed by Paul Dietz' test suite:
1113 ** interval arithmetic during type derivation used inexact integer
1114 to single-float coercions.
1115 ** arithmetic operations involving large integers and single
1116 floats give the same results in compiled and interpreted code.
1117 ** deriving the result type of COERCE no longer signals an error
1118 if the derived type of the second argument is a MEMBER type
1119 containing invalid type specifiers.
1120 ** ADJOIN with constant NIL as second argument works correctly.
1121 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1123 changes in sbcl-1.0.18 relative to 1.0.17:
1124 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1125 profiles only the current thread.
1126 * minor incompatible change: changes to SYMBOL-VALUE of constants
1127 defined with DEFCONSTANT now signal an error.
1128 * enhancement: SB-SPROF now has support for wallclock profiling,
1129 and is also able to profile specific threads. REPORT output
1130 has also additional sorting options.
1131 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1133 * optimization: structure allocation has been improved
1134 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1135 ** out of line constructors are ~10% faster.
1136 ** inline constructors are ~15% faster.
1137 ** inline constructors are capable of dynamic extent allocation
1138 (generally on x86 and x86-64, in some cases on other platforms
1140 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1142 * optimization: file compiler is now able to coalesce non-circular
1143 lists, non-base strings, and bit-vectors. Additionally, constants
1144 are never referenced through SYMBOL-VALUE at runtime.
1145 * optimization: code defining methods on PRINT-OBJECT (and other
1146 generic functions in the COMMON-LISP package) now loads faster.
1147 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1149 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1150 fasl is now deleted. (reported by Attila Lendvai)
1151 * bug fix: READ-LINE always returned NIL for the last line in files.
1152 (reported by Yoshinori Tahara)
1153 * bug fix: more accurate disassembly annotations of foreign function
1154 calls. (thanks to Andy Hefner)
1155 * bug fix: trimming non-simple strings and non-string string
1156 designators when the there is nothing to trim works properly.
1157 (thanks to James Knight)
1158 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1159 (thanks to Travis Cross)
1160 * fixed some bugs revealed by Paul Dietz' test suite:
1161 ** NIL is a valid function name (regression at 1.0.13.38)
1162 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1163 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1164 fill pointers properly (regression at 1.0.12.23)
1165 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1166 displacement indices properly (regression at 1.0.12.23)
1168 changes in sbcl-1.0.17 relative to 1.0.16:
1169 * temporary regression: user code can no longer allocate closure
1170 variable storage on stack, due to bug 419 without explicitly
1171 requesting it. Please consult sbcl-devel for advice if you need to
1172 use this feature in the meanwhile.
1173 * new feature: runtime argument --control-stack-size can be used to
1174 adjust thread default control stack size.
1175 * enhancement: improved TIME output
1176 ** all times are reported using the measured accuracy (milliseconds
1177 for real and GC times, microseconds for everything else.)
1178 ** processor cycle counts on x86 and x86-64.
1179 ** interpreted forms are counted for both evaluator modes.
1180 ** number of lambdas converted by the compiler is reported.
1181 ** CPU percentage report (computed from real and total run time.)
1182 ** more comprehensive run time reporting, using a condenced format
1183 ** interperted form, lambda, and page fault counts are omitted
1185 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1187 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1188 * optimization: two argument forms of LAST are upto ~10% faster
1189 in normal SPEED policies.
1190 * optimization: NCONC no longer needs to heap cons its &REST list
1191 in normal SPEED policies.
1192 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1193 to Sidney Markowitz)
1194 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1195 regression since 1.0.9.1. (thanks to Eric Marsden)
1196 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1197 since 1.0.15.36. (thanks to Paul Khuong)
1198 * bug fix: LAST when always returned the whole list when given a bignum
1199 as the second argument.
1200 * bug fix: dynamic extent allocation of nested lists and vectors
1201 could leak to otherwise accessible parts.
1202 * bug fix: invalid optimization of heap-allocated alien variable
1204 * bug fix: fasl header checking is less vulnerable to different
1205 platform word lengths.
1206 * bug fix: more correct assembler syntax for GNU binutils
1207 2.18.50.0.4 support. (thanks to Marijn Schouten)
1208 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1210 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1211 declarations) successfully. (reported by Attila Lendvai)
1213 changes in sbcl-1.0.16 relative to 1.0.15:
1214 * minor incompatible change: revert the changes to sb-posix's error
1215 signaling added in 1.0.14.
1216 * minor incompatible change: change PROBE-FILE back to returning
1217 NIL whenever we can't get a truename, as was the case before 1.0.14.
1218 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1219 inherits from ERROR instead of just CONDITION.
1220 * new feature: SB-INTROSPECT can provide source locations for instances
1221 as well. (thanks to Tobias Rittweiler)
1222 * optimization: binding special variables now generates smaller code
1223 on threaded platforms.
1224 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1225 and cases where no :TEST is given but the compiler can infer that
1226 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1227 * optimization: better LOGNOT on fixnums.
1228 * optimization: modular arithmetic for a particular requested width
1229 is implemented using a tagged representation unless a better
1230 representation is available.
1231 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1232 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1233 for wellformedness and returns a specialized vector. (reported by
1234 Francois-Rene Rideau)
1235 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1236 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1237 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1238 unscheduling timer at the same time as another timer fires.
1239 * bug fix: don't reschedule timers for dead threads.
1240 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1241 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1242 bogus errors if select() was interrupted.
1243 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1245 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1246 * enhancement: cleaner backtraces for interactive interrupts, as
1247 well as other cases where the interesting frames used to be
1248 obscured by interrupt handling frames.
1249 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1250 now supported, and tracing a whole package using (TRACE "FOO") now
1251 traces SETF-functions as well.
1252 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1253 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1254 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1255 * unreadably printed representation of hash-tables now includes
1257 * bug fix: partially fixed #188: type propagation from assignments
1258 is now more efficient.
1259 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1260 'DOUBLE-FLOAT) are not flushable.
1261 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1262 full address of the object, and none of the tag bits.
1263 * bug fix: readably printing hash-tables now respects other printer
1264 control variables. (reported by Cedric St-Jean)
1265 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1266 keyword with MAKE-HASH-TABLE.
1267 * bug fix: export SB-POSIX:MKSTEMP.
1268 * bug fix: SORT was not interrupt safe.
1269 * bug fix: XREF accounts for the last node of each basic-block as
1271 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1272 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1273 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1274 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1275 create obsolete instances in the case of redefinition or
1276 obsoletion of a superclass. (thanks to Andy Hefner)
1277 * bug fix: Support for the Alpha architecture has been revived; it had
1278 suffered somewhat from lack of maintenance since sbcl-1.0.
1279 * improvements to the Windows port:
1280 ** The system detects the codepage to use at startup, instead of
1281 using the value from the saved core. (thanks to Kei Suzuki)
1283 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1284 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1285 (see documentation for details.)
1286 * revived support for OpenBSD (contributed by Josh Elsasser)
1287 * partially fixed bug #108: ROOM no longer suffers from occasional
1288 (AVER (SAP= CURRENT END)) failures.
1289 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1290 bodies no longer cause a WARNING to be signalled. (reported by
1292 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1293 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1294 the bug in TRUNCATE.) (reported by Michael Weber)
1295 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1296 no samples. (reported by Andy Hefner)
1297 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1298 no longer appear as (NIL ...) frames in backtraces.
1299 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1300 is now actually exported from SB-EXT as documented. (reported by
1302 * bug fix: sb-aclrepl now correctly understands how to inspect
1303 single-floats on 64-bit platforms where single-floats are not boxed.
1304 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1305 yet been finalized. (reported by Levente Meszaros)
1306 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1307 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1308 SBCL-specific optimize qualities.
1310 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1311 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1312 an executable in the search path, and does so in the child
1313 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1314 been removed; it can be found in the CVS history, for somebody who
1315 needs that search behavior (see the manual).
1316 * minor incompatible change: compiler policy re. weakening type
1317 checks has changed: now type checks are weakened only if SAFETY < 2
1319 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1320 unparsing of directory pathnames as files. Analogously,
1321 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1322 filename to parse into a directory pathname.
1323 * enhancement: implicit generic function creation now signals a
1324 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1325 users can bind handlers for and muffle around calls to LOAD.
1326 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1327 to be used (using the default stream external format), and allows
1328 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1329 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1330 strings and vectors whose element-type or simplicity is not fully
1331 known at compile-time.
1332 * optimization: STRING-TRIM and related functions no longer allocate
1333 a new string when no trimming needs to be performed. These functions
1334 are also faster than before when the input string has been declared
1336 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1337 * optimization: READ-LINE is significantly faster for files containing
1339 * optimization: non-open coded uses of character comparison operators
1340 (e.g. char=) no longer cons when called with more than one parameter
1341 on platforms supporting dynamic-extent allocation.
1342 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1343 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1344 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1346 * bug fix: some sequence functions elided bounds checking when
1348 * bug fix: too liberal weakening of union-type checks when SPEED >
1350 * bug fix: more bogus fixnum declarations in ROOM implementation
1353 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1354 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1355 :SYNCHRONIZED argument, which makes the hash-table safe for
1356 concurrent accesses (but not iteration.) See also:
1357 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1358 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1359 * optimization: CONCATENATE on strings is an order of magnitude faster
1360 in code compiled with (> SPEED SPACE).
1361 * optimization: SUBSEQ is ~50% faster on lists.
1362 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1363 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1364 END is smaller then START.
1365 * bug fix: SB-PROFILE will no longer report extra consing for nested
1366 calls to profiled functions.
1367 * bug fix: ROOM implementation had bogus fixnum declarations which
1368 could cause type-errors when calling ROOM on large images.
1369 * bug fix: if file compilation is aborted, the partial fasl is now
1370 deleted, and COMPILE-FILE returns NIL as the primary value.
1371 * bug fix: number of thread safety issues relating to SBCL's internal
1372 hash-table usage have been fixed.
1373 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1374 be returned from its body when the values were being returned
1375 using unknown-values return convection and the W-P-O was wrapped
1376 inside an UNWIND-PROTECT.
1377 * bug fix: sb-posix should now compile again under Windows, enabling
1378 slime to work again.
1380 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1381 * incompatible change: hash-table accessor functions are no longer
1382 automatically protected by locks. Concurrent accesses on the same hash-table
1383 from multiple threads can give inconsistent results or even corrupt the
1384 hash-table completely. Multi-threaded applications should do their own
1385 locking at the correct granularity. In the current implementation it is
1386 still safe to have multiple readers access the same table, but it's not
1387 guaranteed that this property will be maintained in future releases.
1388 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1389 and will signal an error at runtime.
1390 * enhancement: SB-THREAD package now exports a semaphore interface.
1391 * enhancement: CONS can now stack-allocate on x86 and
1392 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1394 * enhancement: nested lists can now be stack allocated on
1395 platforms providing stack allocation support.
1396 * enhancement: dynamic-extent support has been extended to support
1397 cases where there are multiple possible sources for the stack
1399 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1400 if the mutex is uncontested on Linux.
1401 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1402 as specified by the CLHS. (thanks to Tobias Rittweiler)
1403 * bug fix: NaN comparison now works on x86-64.
1404 * bug fix: CLOSE :ABORT T on a stream with pending output now
1406 * bug fix: instances of non-standard metaclasses using standard
1407 instance structure protocol sometimes missed the slot type checks
1409 * bug fix: known functions can be inlined in high-debug code.
1411 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1412 * minor incompatible change: the MSI installer on Windows no longer
1413 associates .lisp and .fasl files with the installed SBCL.
1414 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1415 on Windows. (thanks to Luis Oliviera)
1416 * new feature: SB-CLTL2 contrib module now implements
1417 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1418 * optimization: scavenging weak pointers is now more efficient,
1419 requiring O(1) instead of O(N) per weak pointer to identify
1420 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1421 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1422 method bodies using constant slot-names when the first argument is
1423 a specializer parameter for the method.
1424 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1425 names, when the class of the instance is a direct instance
1426 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1427 as slow as the constant slot-name case.)
1428 * optimization: member type construction is now O(N) instead
1430 * optimization: UNION and NUNION are now O(N+M) for large
1431 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1433 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1434 now more readable in environments like Slime which display it.
1435 (thanks to Tobias C. Rittweiler)
1436 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1437 was able to infer the correct argument type for the object on which
1438 the CAS operation was being performed.
1439 * bug fix: copy propagation interfered with parallel assignment
1440 semantics in local calls. (reported by Paul Khuong)
1441 * bug fix: the signed modular fixnum shift compiled to wrong code on
1442 x86 and x86-64. (spotted by a slight modification to some of
1445 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1446 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1447 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1448 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1450 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1451 and generic function now print the object identity for anonymous
1452 instances. (thanks to Attila Lendvai)
1453 * enhancement: as an extension to MOP, SBCL now supports SETF of
1454 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1455 (thanks to Attila Lendvai)
1456 * enhancement: sb-cover has an alternate annotation mode which puts
1457 the form annotations at the car of the form, instead of annotating
1458 it completely. The benefit of this mode is that it shows better
1459 which forms were instrumented by the compiler.
1460 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1461 by printer control variables. (reported by Dan Corkill)
1462 * bug fix: system leaked memory when delayed output was performed by
1463 the OS in smaller chunks then expected. (thanks to David Smith)
1464 * bug fix: system leaked memory when file streams were not closed
1466 * bug fix: large objects written to slow streams that were modified
1467 after the write could end up with the modified state written to
1468 the underlying file descriptor.
1469 * bug fix: multiple threads operating in parallel on the same stream
1470 could cause buffer-overflows.
1471 * bug fix: source location information is stored correctly
1472 (broken since 1.0.6). This bug would generally show up as the
1473 Slime debugger highlighting the wrong form when the sldb-show-source
1475 * bug fix: Branch forms are again annotated as branches in the sb-cover
1477 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1478 on x86-64. (reported by Gregory Vanuxem)
1479 * bug fix: EQUALP could return wrong results for structures with raw
1480 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1481 word). (reported by Vjacheslav Fyodorov)
1482 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1485 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1486 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1487 atomic compare-and-swap operations on threaded platforms.
1488 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1489 allows assigning a global minimum value to optimization qualities
1490 (overriding proclamations and declarations).
1491 * enhancement: closed over variables can be stack-allocated on x86
1493 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1495 * optimization: slot definition lookup is now O(1). This speeds up
1496 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1497 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1498 * optimization: ASSOC and MEMBER can now be open-coded for all
1499 combinations of keyword arguments when second argument is constant
1500 and SPEED >= SPACE. In other cases a specialized version is
1502 * bug fix: using obsoleted structure instances with TYPEP and
1503 generic functions now signals a sensible error.
1504 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1505 (reported by Kristoffer Kvello)
1506 * bug fix: backtrace construction is now more careful when making
1507 lisp-objects from pointers on the stack, to avoid creating bogus
1508 objects that can be seen by the GC.
1509 * bug fix: defaulting of values in contexts expecting more than 7
1510 variables now works on x86-64. (reported by Christopher Laux)
1511 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1513 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1514 as the property-list of a symbol.
1515 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1516 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1517 situations requested, are once again file-compileable. (reported
1520 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1521 * MOP improvement: support for user-defined subclasses of
1522 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1523 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1524 the expansion of DEFMETHOD, is responsible for generating a form
1525 which creates a list of specializers when evaluated. Additional
1526 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1527 debugging and introspective support.
1528 * minor incompatible change: the (unsupported) spinlock interface
1529 has changed: free spinlock now has the value NIL, and a held spinlock
1530 has the owning thread as its value.
1531 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1532 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1534 * enhancement: name of a socket-stream is now "a socket" instead of
1535 "a constant string".
1536 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1537 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1538 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1539 for generic functions. (Thanks to Tobias C. Rittweiler)
1540 * optimization: bignum printing speed has been improved by 20-40%
1541 (depending on the bignum size.)
1542 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1544 * bug fix: the cache used by the CLOS to store precomputed effective
1545 methods, slot offsets, and constant return values is now thread and
1547 * bug fix: generic function dispatch function updating is now thread
1548 and interrupt safe (in the sense that the known issues have been
1550 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1551 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1552 * bug fix: asdf systems with dependencies to the SB-POSIX or
1553 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1554 * bug fix: interrupt safety of applicable method computation has been
1557 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1558 * new contrib: sb-cover, an experimental code coverage tool, is included
1559 as a contrib module.
1560 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1561 significantly faster.
1562 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1563 produce more efficient code on x86-64 if the compiler can determine
1564 that (+ INDEX <constant>) does not require a bounds check and FOO
1565 has an element type at least 8 bits wide.
1566 * enhancement: a new, experimental synchronous timeout facility is
1567 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1568 * enhancement: when a symbol name conflict error arises, the
1569 conflicting symbols are always printed with a package prefix.
1570 (thanks to Kevin Reid)
1571 * enhancement: stepping is now once again supported on the SPARC and
1572 MIPS platforms. (It is also now more likely to work on CheneyGC
1574 * enhancement: sb-sprof can now also track and report accurate call
1576 * bug fixes: the treatment of non-standard subclasses of
1577 SB-MOP:SPECIALIZER is more correct.
1578 * incompatible change: PURIFY no longer copies the data from the
1579 dynamic space into the static and read-only spaces on platforms
1580 that use the generational garbage collector
1581 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1583 * bug fix: GC race condition occasionally resulting in crashes with
1584 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1586 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1588 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1589 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1590 * bug fix: an asynchronous interrupt could previously leave the
1591 system running with GC inhibited.
1592 * bug fix: a DECLARE form evaluated at top-level now causes an error
1593 rather than silently (or verbosely) returning NIL.
1594 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1595 result in a error being signalled due to source form lookup errors.
1596 (reported by Peter Graves)
1598 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1599 * incompatible change: removed writer methods for host-ent-name,
1600 host-ent-addresses -- changing the values did not update the DNS
1602 * minor incompatible change: changed experimental JOIN-THREAD interface
1603 * documentation: the manual now lists reader and writer methods
1604 in class slot documentation sections. (thanks to Richard M Kreuter)
1605 * documentation: unwinding from asyncronous events has been
1606 documented as unsafe.
1607 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1608 in multithreaded application code.
1609 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1610 platforms. (thanks to James Anderson for the optimization hint)
1611 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1613 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1614 variants no longer cons.
1615 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1616 their NOT- variants no longer cons.
1617 * optimization: EQUAL hash tables no longer use SXHASH for objects
1618 of all data types, but instead use an EQL hash for types for which
1619 EQUAL is the same as EQL.
1620 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1621 are significantly faster.
1622 * optimization: new STRING-OUTPUT-STREAM implementation is much
1623 faster for large outputs and conses 30% less on average.
1624 * enhancement: XREF information is now collected for references made
1625 to global variables using SYMBOL-VALUE and a constant argument.
1626 * enhancement: SIGINT now causes a specific condition
1627 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1628 * bug fix: FILE-POSITION used to signal an error in some cases where
1629 ANSI requires it to return NIL.
1630 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1631 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1632 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1634 * bug fix: bad type declaration in the CLOS implementation has
1635 been fixed. (reported by James Anderson)
1636 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1637 (thanks to Lutz Euler)
1638 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1639 required by the CLHS. (reported by Samium Gromoff)
1640 * bug fix: dead unbound variable references now signal an error.
1641 (reported by Marco Monteiro)
1642 * bug fix: / with an unused value was being deleted in safe code.
1643 (thanks to Marco Monteiro and Kevin Reid)
1644 * bug fix: number of characters that can be written onto a single
1645 line in a file is unlimited.
1646 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1647 been fixed by inhibiting interrupts for when GC is disabled.
1648 * bug fix: some interrupt safety issues with GETHASH, (SETF
1649 GETHASH), CLRHASH and REMHASH have been fixed.
1650 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1651 specifier no longer causes infinite recursion.
1652 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1653 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1654 * bug fix: an &environment argument with the correct variable information
1655 is passed to macros that are expanded during byte compilation.
1656 (reported by Samium Gromoff)
1657 * bug fix: a logic error was causing the hash function for bignums to
1658 have excessive amounts of collisions. (reported by Faré Rideau)
1659 * bug fix: modifying the contents of an array could change the return
1660 value of SXHASH on that array, which is only allowed for strings
1661 and bit vectors. (bug introduced in 0.9.16)
1662 * improvement: the x86-64/darwin port now passes all tests (except
1663 for the debugger tests) but should still be considered
1664 experimental until this is fixed.
1665 * improvement: a style-warning is signaled for CASE (etc) clauses with
1666 duplicate keys. (thanks to Kevin Reid)
1667 * improvement: macos/x86 and macos/x86-64 now use mach exception
1668 handlers for dealing with illegal instructions (for trapping and
1669 error handling) and memory protection violations (for GC).
1671 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1672 * new platform: experimental support for x86-64/darwin (MacOS).
1673 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1674 and getnameinfo sockets functions are used instead of gethostbyaddr
1675 and gethostbyname, on platforms where the newer functions are available.
1676 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1678 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1679 don't print the startup banner, but behave as if --noinform was passed
1680 as a command line argument. (thanks to Kevin Reid)
1681 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1682 * optimization: code using alien values with undeclared types is much faster.
1683 * optimization: the compiler is now able to open code SEARCH in more cases.
1684 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1685 * bug fix: using standardized COMMON-LISP special variables as loop
1686 variables no longer signals bogus package lock violations. (reported
1688 * bug fix: declaring local loop variables to be of a range-limited type
1689 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1690 (reported by Andras Simon)
1691 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1692 bugs remain on x86-64.)
1693 * bug fix: the #= and ## reader macros now interact reasonably with
1694 funcallable instances.
1695 * bug fix: type-checks for function arguments were compiled using the
1696 compiler policy settings of the wrong lexical environment (in 1.0.2
1698 * bug fix: SHADOW accepts characters as string designators, as required
1699 by the spec (thanks to Eric Marsden)
1700 * bug fix: fixed GC safety issues when foreign functions are called with
1701 non-base strings as arguments
1702 * bug fix: more consistent error output for fatal-compiler-warnings, like
1704 * bug fix: functions with proper names were showing up as NIL in
1705 backtraces (reported by Edi Weitz, regression in 1.0.2)
1707 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1708 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1709 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1710 produce more efficient code on the x86 if the compiler can determine
1711 that (+ INDEX <constant>) does not require a bounds check and FOO
1712 has an element type at least 8 bits wide.
1713 * bug fix: references to undefined variables are handled the same way
1714 in toplevel forms as in the normal compiler
1715 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1717 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1718 (thanks to Jon Buller)
1719 * improvement: faster compilation times for complex functions
1720 * improvement: added readlink support to SB-POSIX (thanks to Richard
1723 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1724 * improvement: experimental support for mach exception handling on
1725 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1727 * improvement: support for GBK external format.
1728 (thanks to Chun Tian (binghe))
1729 * improvement: the debugger now displays variables that have been closed
1730 over, in code compiled with (DEBUG 2) or higher
1731 * improvement: support for executable cores on NetBSD (thanks to
1733 * new feature: added a RESTART-FRAME debugger command
1734 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1735 be used to provide an implementation for FILE-POSITION on Gray streams
1736 (thanks to Eric Marsden)
1737 * new feature: add syslog, openlog and closelog support to SB-POSIX
1738 (thanks to Richard Kreuter)
1739 * optimization: the function call overhead in code compiled with
1740 a high DEBUG optimization setting is significantly
1741 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1742 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1743 (thanks to Tony Martinez)
1744 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1745 evaluated once (reported by Kevin Reid)
1746 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1747 works again (thanks to Kilian Sprotte)
1748 * bug fix: an error is signaled for tagbodies with duplicate tags
1749 (thanks to Stephen Wilson)
1750 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1751 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1752 stack frames from alien callbacks.
1753 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1754 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1755 65k pages (thanks to David Woodhouse)
1756 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1758 changes in sbcl-1.0.1 relative to sbcl-1.0:
1759 * new platform: FreeBSD/x86-64, including support for threading.
1760 * new feature: the compiler stores cross-referencing information
1761 about function calls (who-calls), macroexpansion (who-macroexpands)
1762 and special variables (who-binds, who-sets, who-references) for code
1763 compiled with (< SPACE 3). This information is available through the
1764 sb-introspect contrib.
1765 * new feature: users may subclass SEQUENCE, and have instances of
1766 these classes interoperate with standard Common Lisp functions if
1767 a number of methods are defined. (This feature is experimental
1768 and the interface subject to change based on feedback from SBCL
1769 users and the general community)
1770 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1771 x86/x86-64, rather than the previous fixed depth of 8
1772 * improvement: another pthread back-end of mutex "pthread-futex".
1773 * bug fix: non-ascii command-line arguments are processed correctly
1774 (thanks to Yaroslav Kavenchuk)
1775 * bug fix: non-required arguments were not passed correctly when a method
1776 defined using DEFMETHOD was called from a mop-generated method using
1777 CALL-NEXT-METHOD (reported by Pascal Costanza)
1778 * bug fix: recursion is now permitted in accessors through
1779 SLOT-UNBOUND. (reported by Pascal Costanza)
1780 * bug fix: an error was signaled at startup if the HOME environment
1781 variable was defined, but had an empty value (reported by Peter Van Eynde)
1782 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1783 signal a PROGRAM-ERROR, not a BUG.
1784 * bug fix: SB-POSIX:READDIR works when built with large file support.
1785 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1787 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1788 for better automatic indentation support. (thanks to Matt Pillsbury)
1789 * optimization: loading generic functions no longer takes O(n^2) time,
1790 proportional to the amount of methods in the generic function
1791 (reported by Todd Sabin and Jeremy Brown)
1792 * optimization: the FIND and POSITION family of sequence functions
1793 are significantly faster on arrays whose element types have been
1795 * improvements to the Windows port:
1796 ** Intermittent heap corruption problems have been fixed. (thanks
1797 to Alastair Bridgewater)
1798 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1800 ** Lisp is able to unwind foreign exception frames from alien
1801 callbacks. (thanks to Alastair Bridgewater)
1803 changes in sbcl-1.0 relative to sbcl-0.9.18:
1804 * improvement: experimental support for threading on FreeBSD/x86.
1805 (thanks to NIIMI Satoshi)
1806 * improvement: runtime option --dynamic-space-size can be used
1807 to set the size of the dynamic space reserved on startup.
1808 * improvement: floating point modes in effect are now saved in
1809 core, and restored on startup.
1810 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1811 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1812 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1813 threads are not running after *SAVE-HOOKS* have run.
1814 * improvement: writes to CLOS instance slots are type-checked in code
1815 compiled with (SAFETY 3)
1816 * improvement: floating-point exception handling on FreeBSD (thanks to
1818 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1819 (thanks to Zach Beane)
1820 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1822 * improvement: added support for the Shift-JIS external format.
1823 (contributed by NIIMI Satoshi)
1824 * improvement: callbacks are supported on Linux/PPC. (thanks to
1826 * bug fix: compiler bug triggered by a (non-standard) VALUES
1827 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1828 * bug fix: file compiler no longer confuses validated and already
1829 dumped structurres. (reported by Kaersten Poeck)
1830 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1831 fill-pointer signals a type-error as required. (thanks to
1833 * bug fix: disassemly of funcallable instances works.
1834 * bug fix: single stepping on PPC.
1835 * bug fix: fix thread-safety problems in the type system (generally
1836 manifesting as nonsensical errors like "STRING is a bad type specifier
1837 for sequences" or "The value 1 is not of type FIXNUM")
1838 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1839 (reported by Josip Gracin)
1840 * bug fix: an error is signaled for attempts to displace arrays with
1841 incompatible element types (thanks to Mario Mommer)
1842 * bug fix: more correct handling of wide characters in debug info
1843 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1844 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1845 and don't cause extra consing
1846 * optimization: MAP and MAP-INTO are significantly faster on vectors
1847 whose elements types have been declared.
1848 * Improvements to SB-SPROF:
1849 ** Support for allocation profiling
1850 ** Reduced profiling overhead, especially for long profiling runs
1851 * Improvements to the Windows port:
1852 ** floating point exceptions are now reported correctly.
1853 ** stack exhaustion detection works partially.
1854 ** more accurate GET-INTERNAL-REAL-TIME.
1855 ** better RUN-PROGRAM behaviour in case of errors in the child
1857 ** PROBE-FILE now simplifies pathnames correctly.
1858 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1859 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1860 1st 1970 (although time timezone data will be unreliable).
1861 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1863 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1864 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1865 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1867 * bug fix: two potential GC deadlocks affecting threaded builds.
1868 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1869 returns T (reported by Anton Kazennikov)
1870 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1871 with non-variable places
1872 * bug fix: remove a race condition in the setting of
1873 funcallable-instance functions, this should make threaded CLOS
1874 code more stable against memory faults.
1875 * bug fix: corruption of specials when unbinding is interrupted by an
1876 asynchronous unwind (reported by Hannu Koivisto)
1877 * improvement: the debugger will now also display local variables that
1878 are only used once, for code compiled with a DEBUG optimization quality
1881 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1882 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1883 * incompatible change: External-format support for FFI calls. The
1884 SB-ALIEN:C-STRING no longer implies an ASCII
1885 external-format. Instead the string is subject to external-format
1886 conversion. Additionally return values of type SB-ALIEN:C-STRING
1887 are by default of type (SIMPLE-ARRAY CHARACTER), not
1888 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1889 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1890 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1891 * incompatible change: SB-EXT package no longer contains the
1892 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1893 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1895 * incompatible change: the single-stepper is no longer available
1896 on Alpha, Mips and Sparc platforms.
1897 * minor incompatible change: the direct superclasses of
1898 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1899 not (STANDARD-OBJECT FUNCTION). This makes the
1900 class-precedence-lists of GENERIC-FUNCTION and
1901 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1903 * minor incompatible change: the default stream external format on
1904 non-unicode SBCL is no longer detected from the locale, but is always
1906 * new feature: Add a version of evaluator that uses an interpreter instead
1907 of the compiler. EVAL still uses the compiler by default, to switch it
1908 to use the interpreter, set the value of the variable
1909 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1910 * minor incompatible change: the single-stepper REPL has been merged
1911 with the normal debugger (see the "Stepping" heading of the debugger help
1912 for more details). The debugger command STEP will no longer switch
1913 to the single-stepper REPL.
1914 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1915 for a type now works.
1916 * bug fix: loading of default sysinit file works. (thanks to Leonid
1918 * bug fix: better detection of circularities in the file-compiler.
1919 (reported by Marco Monteiro)
1920 * bug fix: the CL pathname functions now work with files that have
1921 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1922 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1923 systems with Unix98 pty semantics.
1924 * bug fix: ASDF-INSTALL will now work with bsd tar.
1925 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1927 * bug fix: timers expiring in dead threads no longer cause a
1928 type-error (reported by Paul "Nonny Mouse").
1929 * bug fix: thanks to more lightweight single-stepper instrumentation,
1930 code compiled with (DEBUG 3) will compile and execute significantly faster,
1931 and will have more accurate type-inferencing than before
1932 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1933 whose bindings are modified
1934 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1935 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1936 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1937 CL:SOFTWARE-VERSION with proper version
1939 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1940 * feature: implemented the READER-METHOD-CLASS and
1941 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1942 as specified by AMOP.
1943 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1945 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1946 (thanks to Lutz Euler)
1947 * optimization: hashing of general arrays and vectors has been
1948 improved. (reported by Any Fingerhut)
1949 * enhancement: SB-INTROSPECT is now able to find definitions of
1950 profiled functions. (thanks to Troels Henriksen)
1951 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1952 as well, allowing compiler-macros for SETF-functions to expand.
1953 * enhancement: step-instrumentation no longer wraps known
1954 single-value functions with multiple-value context, allowing
1955 better type inference.
1956 * fixed bug #337: use of MAKE-METHOD in method combination now works
1957 even in the presence of user-defined method classes. (reported by
1958 Bruno Haible and Pascal Costanza)
1959 * fixed bug #339(c): if there are applicable methods not part of any
1960 long-form method-combination group, call INVALID-METHOD-ERROR.
1961 (reported by Bruno Haible)
1962 * fixed bug #361: the :FUNCTION initarg in the protocol for
1963 initialization of methods can now be used to override
1964 internally-produced optimized functions. (reported by Bruno
1966 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1967 system-provided lambda expression no longer cause warnings about
1968 unbound #:|pv-table| symbols.
1969 * bug fix: improved the handling of type declarations and the
1970 detection of violations for keyword arguments with non-constant
1972 * bug fix: potentially erronous calls to PATHNAME and
1973 MERGE-PATHNAMES were being flushed in some cases.
1974 (reported by Richard Kreuter)
1975 * bug fix: compiled calls to TYPEP were mishandling obsolete
1976 instances. (reported by James Bielman and Attila Lendvai)
1977 * bug fix: format strings with ~> without matching ~< no longer
1978 trigger an AVER, but signal an understandable error instead.
1979 (reported by Antonio Martinez)
1980 * bug fix: specifying an output-file without a pathname-type for
1981 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1982 of input-file instead of "fasl". (reported by Robert Dodier)
1983 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1984 (reported by James Y Knight).
1985 * bug fix: compiler-macros-function did not consider the environment
1986 argument for shadowing by local functions.
1987 * bug fix: compiler-macros expansion was inhibited by local INLINE
1989 * bug fix: inline expansions of known functions were subject to
1990 step-instrumentation in high debug policies, leading to problems
1991 with type-inference.
1992 * bug fix: compiler failed to differentiate between different CONS
1993 types in some cases.
1994 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1995 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1996 * bug fix: #368: incorrect use of expressed vs. upgraded array
1998 * bug fix: #306a: more precise unions of array types.
1999 * thread-safety improvements:
2000 ** CONDITION-WAIT could return early on Linux, if the thread was
2001 interrupted and subsequently continued with SIGCONT.
2002 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2004 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2005 * added support for the ucs-2 external format. (contributed by Ivan
2007 * minor incompatible change: pretty printing of objects of type
2008 (cons symbol) is, in the default pprint-dispatch-table, now
2009 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2011 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2012 called later in a class's lifetime, possibly as late as when the
2013 first instance of the class is created. Previously,
2014 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2015 class became finalizeable.
2016 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2017 for multibyte external-format streams. (thanks to "vbzoli")
2018 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2019 with :ALLOCATION :CLASS inherited from superclasses of the
2021 * fixed bug: anonymous classes can now be created using the :NAME
2022 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2023 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2024 * fixed bug: core-files saved with :EXECUTABLE T can again be
2025 executed when SBCL_HOME isn't set. (reported by James Knight)
2026 * fixed bug: toplevel LOCALLY forms with declarations could
2027 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2028 * fixed bug: printing from several different threads using different
2029 values of *print-case* could cause invalid output, due to
2030 some internal special variables of the printer not being bound
2031 thread-locally (reported by Max Mikhanosha)
2032 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2033 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2034 (reported by Pascal Costanza)
2035 * fixed bug: FINALIZE-INHERITANCE is called from
2036 REINITIALIZE-INSTANCE on classes when the class has previously
2037 been finalized, as required by AMOP.
2038 * minor code generation optimizations:
2039 ** better register allocation in CLOS dispatching functions
2040 ** overflow detection when coercing signed bytes to fixnums on x86-64
2041 ** is now implemented with one IMUL instruction instead of three shifts
2042 ** more efficient bit-vector access on x86 and x86-64
2043 ** more efficient access to raw structure slots on x86 and x86-64
2044 * fixed some bugs revealed by Paul Dietz' test suite:
2045 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2046 return its argument.
2048 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2049 * feature: thread support on Solaris/x86, and experimental thread support
2051 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2053 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2054 default method for SLOT-UNBOUND.
2055 * minor incompatible change: prevent the user from specializing the
2056 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2057 somewhat counter to the intent of the protocol, I (CSR) think, and
2058 additionally it just doesn't work in SBCL as currently
2059 implemented, thanks to optimizations (that are always valid for
2060 the other three SLOT-VALUEish functions, but not for the setter).
2061 * minor incompatible change: the :SB-LDB feature is now enabled by
2062 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2063 the low-level debugger.
2064 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2065 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2066 down to an SB-SYS:FD-STREAM, allowing direct communication in
2067 more cases. Temporary files and pipes are still used as a fallback
2069 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2070 on the non-reentrant C functions localtime(3) and gmtime(3).
2071 * bug fix: global optimization policy was not visible in LOCALLY and
2073 * bug fix: class objects can be used as specializers in methods.
2074 (reported by Pascal Costanza)
2075 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2076 with a type error. (reported by blitz_ on #lisp)
2077 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2078 failed with a type error. (reported by Pascal Bourguignon)
2079 * bug fix: merging pathnames against defaults with :DIRECTORY
2080 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2081 (reported by James Y Knight)
2082 * bug fix: saving large (>2GB) cores on x86-64 now works
2083 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2084 constant index and a (simple-array (signed-byte 32)) array
2085 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2086 error (patch by Robert J. Macomber)
2087 * feature: TIME now displays the amount of run-time spent in GC
2088 * bug fix: The debugger now does a better job of respecting
2089 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2090 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2091 workaround for bug 403.)
2092 * bug fix: floating point exception handling now works on FreeBSD
2093 (thanks to NIIMI Satoshi)
2094 * fixed some bugs revealed by Paul Dietz' test suite:
2095 ** MISC.641: LET-conversion were not supposed to work in late
2097 * improvements to the Win32/x86 port:
2098 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2099 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2101 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2102 * new feature: source path information is generated for macro-expansion
2103 errors for use in IDE's like Slime (thanks to Helmut Eller)
2104 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2105 * bug fix: compiler does not loop forever on an invalid type in
2107 * improvement: compilation of most CLOS applications is significantly
2109 * optimization: added a limited bytecode compiler for simple toplevel
2110 forms, speeding up compilation and FASL loading
2111 * bug fix: the statistical profiler now properly distinguishes anonymous
2114 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2115 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2116 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2117 into subclasses of the finalized class. Now user calls to
2118 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2119 system return before any subclasses are finalized.
2120 * minor incompatible change: The reader no longer ignores errors
2121 regarding non-existent packages in #+ and #- feature tests.
2122 * new feature: command line options --no-sysinit, --no-userinit to
2123 inhibit loading the corresponding init files
2124 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2125 for sending data through UDP sockets (thanks to François-René Rideau)
2126 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2127 error is signalled instead (thanks to François-René Rideau)
2128 * minor incompatible change: Error signalling behaviour of lexical
2129 operations violating package locks has changed slightly. Refer to
2130 documentation on package locks for details.
2131 * enhancement: EVAL can process IF-expressions without resorting to the
2133 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2134 constant-folded properly due to missing out-of-line functions.
2135 (reported by Mika Pihlajamäki)
2136 * bug fix: LISTEN sometimes returned T even in cases where no data was
2137 immediately available from the stream
2138 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2139 were reversed. (reported by Levente Mészáros)
2140 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2141 when given a vector displaced to an adjustable array. (reported
2143 * bug fix: derivation of float boundaries from numbers outside the
2144 appropriate float range (reported by John Wiseman)
2145 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2147 * bug fix: precomputing cache entries for generic functions with
2148 some subclasses of specializers as yet invalid does not attempt to
2149 fill a cache line with a negative offset. (reported by Levente
2151 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2152 allow condition class objects as arguments to DOCUMENTATION and
2153 (SETF DOCUMENTATION); only find and set documentation for
2154 structure names for the STRUCTURE doc-type. (suggested by Gary
2156 * improvements to the Win32/x86 port:
2157 ** (user-homedir-pathname) and default initialization file
2158 locations now know about the user's "Documents and Settings"
2159 directory (thanks to Yaroslav Kavenchuk)
2160 ** run-program is implemented (thanks to Mike Thomas)
2161 ** sockets support (thanks to Timothy Ritchey)
2162 ** better backtrace support (thanks to Alastair Bridgewater)
2163 ** sb-grovel supported
2164 ** asdf-install and sb-posix work somewhat
2165 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2166 * improvements to the Solaris/x86 port:
2167 ** works on Solaris 11/Solaris Express
2168 ** floating-point exception handling support
2169 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2170 * fixed some bugs revealed by Paul Dietz' test suite:
2171 ** REMOVE-METHOD returns its generic function argument even when
2172 the method is not one of the generic functions' methods.
2173 ** objects declared as MEMBER types can be admissible arguments to
2174 structure accessors.
2175 ** printing characters should simply be printed by the FORMAT ~:C
2177 ** compiler failure when compiling functions with hairy constant
2178 defaults for optional parameters.
2179 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2180 function, which is already optimized.
2182 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2183 * new platform: experimental support for SBCL x86/Darwin, including
2184 MacOS X 10.4.5 on Intel.
2185 * new feature: Unicode character names are now known to the system
2186 (through CHAR-NAME and NAME-CHAR).
2187 * new feature: the filesystem location of SBCL's core file is
2188 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2189 * minor incompatible change: the contrib modules SB-POSIX and
2190 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2191 this change is to make it easier to distribute
2192 location-independent binaries.
2193 * bug fix: as implied by AMOP, standardized classes no longer have
2194 slots named by external symbols of public packages. (reported by
2196 * optimization: calling functions via constant symbols -- as in
2197 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2198 via the function object as in (FUNCALL #'FOO).
2199 * optimization: on x86 and x86-64, the calling convention for the
2200 case of dealing with an unknown number of values has been altered
2201 to be friendlier to the prediction heuristics implemented,
2202 particularly with reference to CALL and RET pairing. (thanks to
2203 Alastair Bridgewater)
2204 * optimization: on x86, the code for access to thread-local symbol
2205 values and binding/unbinding of thread-local symbols is smaller.
2206 (thanks to Alastair Bridgewater)
2207 * enhancement: CONSTANTP is now able to determine constantness of
2208 more complex forms, including calls to constant-foldable standardized
2209 functions and some special forms beyond QUOTE.
2210 * fixed bug: occasional GC crashes on Solaris/x86
2211 * optimization: x86-64 supports stack allocation of results of simple
2212 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2213 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2214 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2215 (thanks to James Knight)
2216 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2217 by the standard (thanks to Stephen Compall)
2219 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2220 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2221 be used for bundling the runtime and the core file into one
2222 executable binary. This feature is not currently supported on all SBCL
2223 platforms. (thanks to James Bielman and NIIMI Satoshi)
2224 * new feature: a generational or ephemeral garbage collector is now
2225 the default on the PowerPC platform (both Linux and Darwin). The
2226 old Cheney (stop and copy) collector is a build-time option.
2227 (thanks to Cyrus Harmon, after Raymond Toy)
2228 * minor incompatible change: the method by which SBCL finds its
2229 contributed modules has changed; it no longer relies on symbolic
2230 links from an $SBCL_HOME/systems directory, but searches directly
2231 in the subdirectories of $SBCL_HOME.
2232 * enhancement: the dynamic heap size on the Linux/PPC platform is
2233 markedly larger, even using the older Cheney garbage collector.
2234 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2235 certain complicated string types. (reported by Gary King)
2236 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2237 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2238 * fixed bug: DOCUMENTATION on structures no longer signals an
2239 error if no structure type of the right name exists. (reported by
2241 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2242 applicable non-standard primary or :AROUND method on
2243 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2244 no longer cause unbound variable errors. (reported by Kevin Reid)
2245 * fixed bug: metacircle resolution in cases where methods have slots
2246 added before the slots from STANDARD-METHOD. (reported by Jean
2248 * fixed bug: the Power PC assembly code for calling into lisp
2249 sometimes computed its return address wrongly (depending on the
2250 15th bit of the address, fixed at link time). This used to
2251 manifest itself in a segmentation violation while building PCL.
2252 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2253 many others over the years)
2254 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2255 the stack pointer (treated as a signed integer) is negative.
2256 (thanks to Peter van Eynde)
2258 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2259 * new platform: experimental support for the Windows operating
2260 system has been added. (thanks to Alastair Bridgewater)
2261 * fixed several bugs in and robustified the PPC FFI (including
2262 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2263 * bug fix: allow non-simple string symbol names (reported by Paul
2265 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2267 * bug fix: saving a core corrupted callbacks on x86/x86-64
2268 * bug fix: closed a loophole in metacircularity detection and
2269 grounding in the PCL implementation of CLOS.
2270 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2271 (reported by tomppa on #lisp)
2272 * bug fix: clear the direction flag on Lisp -> C transitions, as
2273 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2274 (reported by Andrej Grozin and Hendrik Maryns)
2275 * optimization: major improvements to GC efficiency on GENCGC platforms
2276 * optimization: faster implementation of EQUAL
2277 * optimization: emit more efficient opcodes for some common
2278 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2279 * optimization: several other minor code-generation improvements on x86-64
2280 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2282 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2283 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2284 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2285 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2286 by ANSI as a generic function, and for consistency (SETF
2287 GENERIC-FUNCTION-NAME) is treated likewise.
2288 * fixed bug #233.b: make constraint propagation notice when a variable
2289 value is changed after it is referenced but before it is used
2290 * fixed bug #296: no more arbitrary behaviour from filenames with
2291 odd characters as --load arguments. (reported by Adam Warner)
2292 * fixed bug #390: :CHARACTER-SET pathname components now work as
2293 expected. (reported by Tim Daly Jr)
2294 * fixed bug #391: complicated :TYPE intersections in slot
2295 definitions no longer cause an error in PCL internals.
2296 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2297 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2298 returning the number of octets which would be written to the
2299 file-stream. (thanks to Robert J. Macomber)
2300 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2301 arguments to the internal stream functions. (thanks to David
2303 * bug fix: stack exhaustion is now handled on the x86/SunOS
2304 platform. (thanks to Daisuke Homma)
2305 * bug fix: more accurate ROOM results on GENCGC platforms
2306 * optimization: improved type inference for arithmetic-for
2307 index variables in LOOP
2308 * optimization: faster floating-point SQRT on x86-64
2309 * fixed some bugs revealed by Paul Dietz' test suite:
2310 ** DOCUMENTATION returns NIL instead of "" for method combinations
2311 that don't have a docstring
2313 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2314 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2315 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2316 therefore are not customizeable by user code (as seems to be at
2317 least permitted and maybe required by AMOP). As a consolation,
2318 however, the SBCL implementation of these functions now calls
2319 REINITIALIZE-INSTANCE as specified by AMOP.
2320 * bug fix: slot-definition documentation is propagated as per ANSI
2321 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2322 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2323 argument, as do eslotd initialization methods. (from Pascal
2324 Costanza's "Closer" project)
2325 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2326 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2328 * bug fix: it is now possible to have more than one subclass of
2329 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2330 (reported by Bruno Haible, Pascal Costanza and others)
2331 * bug fix: the dependent update protocol now works for generic
2332 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2333 and Pascal Costanza)
2334 * bug fix: condition-class instances corresponding to
2335 DEFINE-CONDITION forms are now created eagerly. (reported by
2336 Kalle Olavi Niemitalo on comp.lang.lisp)
2337 * bug fix: floating point printing is more accurate in some
2338 circumstances. (thanks to Simon Alexander)
2339 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2340 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2341 * bug fix: callbacks on OS X now preserve stack-alignment.
2342 (thanks to Cyrus Harmon)
2343 * enhancement: the x86-64 disassembler is much better at
2344 disassembling SSE instructions. (thanks to Lutz Euler)
2345 * enhancement: CHECK-TYPE on a variable now allows type-inference
2346 (thanks to Vincent Arkesteijn)
2347 * optimization: improved performance of EUC-JP external format.
2348 (thanks to NIIMI Satoshi)
2349 * optimization: performance improvements to IO on file streams of
2350 :ELEMENT-TYPE CHARACTER
2351 * optimization: much faster memory allocation on x86-64
2352 * optimization: faster garbage collections (latency and throughput)
2354 * optimization: faster bignum subtraction and division on x86 and x86-64
2355 (thanks to Lutz Euler)
2356 * optimization: more accurate type-inference for loops that use a
2357 floating point index variable or a negative step.
2359 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2360 * bug fix: add a workaround to SBCL looping infinitely at startup on
2361 Linux kernels with apparently buggy implementations of personality().
2362 (thanks to Svein Ove Aas)
2363 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2364 (thanks to David Lichteblau)
2365 * bug fix: local bindings shadow global symbol macros for
2366 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2367 * optimization: non-open coded uses of numeric comparison operators
2368 (e.g. >) no longer cons when called with more than one parameter
2369 on platforms supporting dynamic-extent allocation.
2370 * enhancement: saving cores with foreign code loaded is now supported
2371 on MIPS/Linux in addition to the previously supported platforms.
2372 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2373 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2374 * bug fix: division by zero in sb-sprof when no samples were collected
2375 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2376 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2377 (thanks to Alexander Kjeldaas)
2378 * new feature: ignoring the return values of destructive functions
2379 like NREVERSE signals a compile-time style-warning.
2380 (thanks to Kevin Reid)
2381 * new feature: the alignment of alien structure fields can be
2382 explicitly specified. (thanks to Cyrus Harmon)
2383 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2384 and dump core on SIGQUIT
2386 ** incompatible change: threads do not inherit values of specials
2387 from their parents (see manual)
2388 ** bug fix: threads stacks belonging to dead threads are freed by the
2389 next exiting thread, no need to gc to collect thread stacks anymore
2390 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2391 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2392 ** bug fix: dynamic variable and thread start related gc lossage
2393 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2395 * fixed some bugs revealed by Paul Dietz' test suite:
2396 ** SUBTYPEP is slightly more accurate on heinously complicated
2397 CONS types where some of the members have uncertain (in the
2398 NIL, NIL sense) type relationships to each other.
2400 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2401 no longer purified unless :PURIFY T is explicitly specified.
2402 ** Non-purified cores are significantly smaller than before
2404 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2405 * new feature: timers based on Zach Beane's excellent timer package
2406 * added support for the following external formats: koi8-u,
2407 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2408 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2409 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2410 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2411 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2412 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2413 * incompatible change: a threaded SBCL will no longer revert to
2414 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2415 * bug fix: interrupts are disabled until startup is complete; no
2416 more sigsegvs when receiving a signal to soon
2417 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2419 * bug fix: add a workaround for the memory randomization features in
2420 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2421 workaround will only be in effect on systems with the proc filesystem
2423 * bug fix: printing objects of type HASH-TABLE signals a
2424 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2426 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2427 have been running for over 50 days. (reported by Gilbert Baumann)
2428 * bug fix: the logic for getting names of functions gets less
2429 confused when confronded with alternate-metaclass
2430 funcallable-instances. (reported by Cyrus Harmon)
2431 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2432 consistent, even on internal alternate-metaclass objects.
2433 * bug fix: flush closure information collected by physical
2434 environment analysis prepass before the main pass. (bug reported
2436 * bug fix: compiler pack phase does not modify a hashtable, which is
2437 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2438 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2439 may be expanded. (reported by Alexander <malishev> on c.l.l)
2440 * bug fix: no more style-warnings when compiling code using LAST
2441 under high-SPEED low-SPACE settings. (reported by David Wallin
2443 * fixed some incompatibilities between SBCL's MOP and the MOP
2445 ** the METAOBJECT class is now implemented;
2446 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2447 STANDARD-OBJECT, as required;
2448 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2449 now compatible (as required by VALIDATE-SUPERCLASS); there
2450 remains a consistency requirement over the presence or absence
2451 of the FUNCTION class in the superclass list of finalized
2452 classes; see the manual for more details;
2453 ** the :AROUND method for COMPUTE-SLOTS on
2454 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2455 requested slot ordering.
2457 ** bug fix: parent thread now can be gc'ed even with a live
2459 ** bug fix: binding a special with PROGV to no value is not
2460 the same as that symbol not having been bound (thanks to
2462 ** bug fix: binding specials is thread safe (thanks to
2464 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2465 and SB-SPROF do not die with 'no handler for signal XX in
2466 interrupt_handle_now(..)' anymore
2467 ** bug fix: WITH-TIMEOUT works with multiple running threads
2468 * fixed some bugs revealed by Paul Dietz' test suite:
2469 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2470 the :method-class keyword argument.
2472 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2473 * new port: the Solaris operating system on x86 processors is now
2474 mostly supported, though some rough edges in the environment
2475 remain. (thanks to Daisuke Homma)
2476 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2477 space for its heap. (thanks to Thiemo Seufer)
2478 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2479 closures. (thanks to Thiemo Seufer)
2480 * minor incompatible change: eof selects abort in the debugger.
2481 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2482 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2484 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2485 deprecated, and will go away in a future revision of SBCL.
2486 * minor incompatible change: GC-ON and GC-OFF are no longer
2487 implemented with a counter, it does not matter how many times gc
2488 is switched on or off
2489 * bug fix: discriminating functions for generic function classes
2490 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2491 make invalid assumptions about method precedence order. (reported
2493 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2494 platforms. (thanks to Thiemo Seufer)
2495 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2496 * bug fix: correct pathname printing with printer escaping is on.
2497 (thanks to Kevin Reid)
2498 * bug fix: complex VOP definitions in "user-space" no longer trigger
2499 package locks. (reported by Zach Beane)
2500 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2501 for funcallable-instance functions, and is no different from
2503 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2504 characters in the current readtable. (reported by Nicholas Neuss)
2505 * bug fix: SUBTYPEP on various CONS types returns more a more
2506 accurate acknowledgment of its certainty.
2507 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2508 lists in some cases. This partially fixes bug 384.
2509 * flush all standard streams before prompting in the REPL and the
2511 * bug fix: signal handling and triggering gc do not conflict
2512 directly anymore, in particular a high frequency sb-sprof does
2513 not prevent gc from running
2514 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2515 approximation for timezone and DST information between the
2516 universal time epoch and the smallest negative 32-bit time_t.
2517 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2518 year 1899 so long as the encoded time is non-negative.
2519 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2520 the correct answer for non-constant rotate amounts when performing
2521 an inline 32-bit rotation.
2523 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2524 there is only one thread in the session
2525 ** bug fix: memory leak for streams created in one thread and
2526 written to in another
2527 ** bug fix: lockup when compiled with gcc4
2528 ** bug fix: race that allows the gc to be triggered when gc is
2530 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2531 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2533 ** bug fix: finished threads are gc'ed properly
2534 * fixed some bugs revealed by Paul Dietz' test suite:
2535 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2536 has arguments with a different set of applicable methods from
2537 the orignal arguments.
2538 ** The type error thrown by MAP now has a correct expected-type
2540 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2541 name a compiled function.
2542 ** Three MISC tests where a large bignum was improperly coerced to
2543 a float that couldn't represent that bignum during type
2544 derivation were fixed.
2545 ** SUBTYPEP can now handle types involving the negation of a
2546 list-form FUNCTION type.
2547 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2548 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2549 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2551 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2552 * New feature: Experimental support for bivalent streams: streams
2553 opened with :element-type :default now allow character and binary
2554 (unsigned-byte 8) I/O
2555 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2556 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2558 * bug fix: no more highly sporadic "couldn't check whether ~S is
2559 readable" when reading a stream and an interrupt hits in the middle
2560 of a select system call
2561 * compiler better recognizes complex arrays (reported by Eduardo
2563 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2564 for variables on SBCL built with linkage-tables. (reported by Luis
2566 * various error reporting improvements.
2567 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2568 (Thanks to Thiemo Seufer)
2569 * bug fix: nested reader invokations work correctly
2570 * bug fix: it is possible to have simultaneous references to foreign
2571 code and foreign data with the same name.
2573 ** added x86-64 support
2574 ** incompatible change: the threading api now works with thread
2575 objects instead of thread ids
2576 ** bug fix: threads are protected from signals and interruption when
2577 starting up or going down
2578 ** bug fix: a race where an exiting thread could lose its stack to gc
2579 ** bug fix: don't halt on infinite error in threads if possible
2580 ** fixed numerous gc deadlocks introduced in the pthread merge
2581 ** bug fix: fixed thread safety issues in read and print
2582 ** bug fix: debugger doesn't hang on session lock if interrupted at
2583 an inappropriate moment
2584 ** bug fix: run-program is now thread safe(r)
2585 ** bug fix: inner with-recursive-lock no longer releases the mutex
2586 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2587 * fixed some bugs revealed by Paul Dietz' test suite:
2588 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2589 EXPECTED-TYPE slots filled.
2590 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2592 ** MAKE-CONDITION accepts classes as type-designators.
2593 ** COMPILE may never return NIL.
2594 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2595 range before calling Unix time functions
2597 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2598 * numerous signal handling fixes to increase stability
2599 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2600 * minor incompatible change: we now correctly canonize default
2601 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2602 as per the MOP, rather than the historical (INITARG INITFUNCTION
2603 INITFORM). (reported by Bruno Haible)
2604 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2605 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2606 for more information.
2607 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2608 pathname is a directory pathname.
2609 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2610 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2612 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2613 :METACLASS argument in addition to a class name. (reported by
2614 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2615 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2616 (reported by Bruno Haible; patch from Gerd Moellmann)
2617 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2619 * bug fix: more cleanups to the floating point exception handling on
2620 x86-64 (thanks to James Knight)
2621 * bug fix: the compiler does not try to constant fold calls of
2622 COERCE and BIT-* functions when they return freshly constructed
2623 objects. (reported by Nikodemus Siivola and Paul Dietz)
2624 * optimization: improved the MIPS versions of generic (in the
2625 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2626 * optimization: direct conversion of (unsigned-byte 32) to floats on
2627 the PowerPC platform.
2628 * optimization: structure instances with raw slots now use less
2629 memory, and probably show better memory locality. (thanks to
2631 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2632 are treated as requests for stack allocation on the x86-64,
2633 Alpha-32, PPC and SPARC platforms.
2634 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2635 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2636 (thanks to Tony Martinez)
2638 ** gcing a dead thread can no longer lead to lockups
2639 ** threads block signals until they are set up properly
2640 ** errno is no longer shared by threads
2641 ** interrupt-thread restores the eflags register on x86
2642 ** fixed some lockups due to gc/thread interaction
2643 * fixed some bugs revealed by Paul Dietz' test suite:
2644 ** invalid dotted lists no longer raise a read error when
2645 *READ-SUPPRESS* is T
2646 ** signal an error if a symbol that names a declaration is used
2647 as the name of a type, or vice versa
2648 ** allow using the (declare (typespec var*)) abbreviation for
2649 (declare (type typespec var*)) with all type specifiers
2650 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2651 ** always return NIL from PPRINT-POP when OBJECT is NIL
2652 ** don't signal errors when pretty-printing malformed LABELS,
2653 FLET or MACROLET forms
2654 ** declarations in a DOLIST body are also in scope for the
2656 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2658 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2661 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2662 * fixed cross-compiler leakages that prevented building a 32-bit
2663 target with a 64-bit host compiler.
2664 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2665 opened with :IF-EXISTS :OVERWRITE.
2666 * fixed bug 281: error for an invalid qualifier in a short-form method
2667 combination method is not signalled until the faulty method is called.
2668 * bug fix: iteration variable type inferrer failed to deal with open
2669 intervals. (reported by Alan Shields)
2670 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2671 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2672 or more runtime options were provided to the sbcl binary.
2673 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2674 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2675 * optimization: there's now a fast-path for fixnum arguments in the
2676 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2677 * optimization: the code generated on x86-64 is more compact thanks
2678 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2679 * bug fix: floating-point exception handling now partly works on
2680 x86-64. (Thanks to James Knight)
2681 * improvement to the MIPS backend from Thiemo Seufer: C-style
2682 64-bit long long arguments and return values to alien functions
2684 * fixed some bugs revealed by Paul Dietz' test suite:
2685 ** the type-error signalled from WARN has a filled-in DATUM slot.
2686 ** the type-error required when a stream is not associated with
2687 a file has the stream as its datum.
2688 ** type-errors on single-floats on x86-64 no longer have
2689 :INVALID-OBJECT as the datum
2690 ** the type-errors signalled for invalid function names now have
2691 a correct expected type
2692 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2693 for structures defined with a :TYPE. Documentation strings for
2694 typed structures are no longer immediately discarded
2695 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2696 broadcast streams and synonym streams. FILE-LENGTH now also works
2697 on broadcast streams.
2699 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2700 * incompatible change: the --noprogrammer option, deprecated since
2701 version 0.7.5, has been removed. Please use the equivalent
2702 --disable-debugger option instead.
2703 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2705 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2706 inoperational for a while now) has been completely removed.
2707 * null lexical environments are now printed as #<NULL-LEXENV>,
2708 significantly reducing the amount of clutter in typical backtraces.
2709 * documentation on weak pointers, finalization, and after GC hooks
2710 has been added to the manual.
2711 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2712 as other specialized array types, is much faster. SUBSEQ and
2713 COPY-SEQ on such arrays have also been sped up.
2714 * optimization: EQL is now more efficient when at least other argument
2715 is known to be of type (OR FIXNUM (NOT NUMBER)).
2716 * fixed bug: the runtime is now less vulnerable to changes in the
2717 size of the SBCL object on OS X, and virtual memory is reserved for
2718 all spaces that need to be at a fixed address.
2719 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2720 * fixed bug: finalizers and after GC hooks that cause consing are now
2722 * fixed bug: compiler error messages and summaries are now printed to
2723 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2724 * fixed inference of the upper bound of an iteration variable.
2725 (reported by Rajat Datta).
2726 * fixed bug 211e: calling local functions with duplicated constant
2727 keyword argument no longer causes a bogus style warning about an
2729 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2730 ftype declaration to be disregarded. (reported by Dave Roberts)
2731 * fixed bug 373: caused by erronous compilation of references to alien
2732 variables in the runtime on ppc/darwin.
2733 * fixed bug 376: CONJUGATE type deriver.
2734 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2735 (reported by Baughn on #lisp)
2736 * a cross-compiler bug on non-x86 platforms has been identified and
2737 fixed. (thanks to Bruno Haible)
2738 * improvements to the MIPS runtime code for increased stability.
2739 (thanks to Thiemo Seufer)
2740 * increased the maximimum compact environment size to allow
2741 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2742 * partial workaround for bug 135: don't name the function we're
2743 calling for hairy cases of EVAL, so as not to accumulate one environment
2744 entry per call to EVAL. (reported by Kevin Reid)
2745 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2746 * optimization: type testing for non-vector arrays should be faster.
2747 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2749 * bug fix: setting 31st element of a bit vector to zero did not work
2751 * bug fix: redefining a class definition which failed due to a
2752 previous accessor / function clash now works (but see BUGS entry
2753 #380 for more problems in this area). (thanks to Zach Beane)
2754 * the long form of DEFINE-METHOD-COMBINATION disables method group
2755 checking when given a single method group with pattern *. (thanks
2757 * on x86 compiler supports stack allocation of results of simple
2758 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2759 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2760 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2761 * fixed some bugs related to Unicode integration:
2762 ** the restarts for recovering from input and output encoding
2763 errors only appear when there is in fact such an error to
2765 * fixed some bugs revealed by Paul Dietz' test suite:
2766 ** MISC.549 and similar: late transformation of unsafe type
2767 assertions into derived types caused unexpected code
2769 ** SCALE-FLOAT type deriver is less wrong.
2770 ** type derivers for EXP, LOG and similar functions compute result
2771 types for complex arguments better.
2772 ** (MISC.563) CONJUGATE type deriver works for very restricted
2774 ** out-of-line type testers for character strings are available.
2775 ** EQUAL compiler transform understands specialness of objects
2777 ** accessing double-floats stored on the stack now works on x86-64.
2778 ** debugger internals could sometimes create invalid lispobjs,
2779 resulting in GC crashes.
2780 ** MISC.548: type check weakening can convert required type into
2782 ** initialization forms for bindings are not in scope of free special
2785 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2786 * incompatible change: thread support for non-NPTL systems has
2787 been removed - locking is buggy and unreliable. A threaded
2788 SBCL build will now warn at startup and refuse to create
2789 new threads, unless futex support is detected in the kernel
2790 * incompatible change: the top level REPL now has only an ABORT
2791 restart associated with it, not TOPLEVEL and ABORT as it used to.
2792 TOP and TOPLEVEL are now available as debugger commands for
2793 returning to the top level.
2794 * incompatible change: forms evaluated in the REPL now use the
2795 global optimization policy.
2796 * incompatible change: user- and system-initialization files are
2797 no longer processed with LOAD, but by READ and EVAL; hence the
2798 global optimization policy, startup package, readtable, etc,
2800 * The .fasl file format number has been incremented because of
2801 various incompatible changes.
2802 * internal entry point details and argument counts no longer appear
2803 in backtraces unless explicitly requested by setting
2804 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2805 * built-in and standard functions no longer have names like "top
2806 level local call to FOO".
2807 * fixed bug 32: functions defined in non-null lexical environments
2808 now have more legible printed representation
2809 * fixed bug 33: functions defined in non-null lexical environemnts
2810 are now more amenable to inspection by INSPECT.
2811 * workaround for bug 354: XEPs no longer appear in backtraces unless
2812 explicitly requested.
2813 * fixed bug: receiving the signal which results from attempting to
2814 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2815 SIGBUS on other *BSDs) on architectures where the C stack is also
2816 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2817 to debugger confusion or wild instability. (reported by Cheuksan
2819 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2820 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2821 (reported by Lutz Euler)
2822 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2823 compiled code. (reported by Paul Dietz)
2824 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2825 specialized parameter to a method to something that is not TYPEP
2826 the specializer is now possible.
2827 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2828 face of package deletion.
2829 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2830 pathname. (reported by David Tolpin on c.l.l)
2831 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2832 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2833 STRING-STREAM and FILE-STREAM, respectively.
2834 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2835 than previously; in addition, its test suite is now run on build.
2836 (thanks to Luke Gorrie)
2837 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2838 * optimization: added a immediate representation for single-floats
2840 * fixed some bugs revealed by Paul Dietz' test suite:
2841 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2842 ** attempting to create a package with a colliding nickname causes
2843 correctable errors to be signalled.
2844 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2845 ** several x86-64 backend bugs related to sign-extension of immediate
2848 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2849 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2850 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2852 * fixed loading of multiply forward-referenced layouts.
2853 (thanks to Cheuksan Wang)
2854 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2855 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2856 (see COMPILE-FILE documentation for details of :PRINT option)
2857 * fixed bugs 19 and 317: fixed-format floating point printing is
2858 more accurate. This also fixes a bug reported by Adam Warner
2859 related to the ~@F format directive.
2860 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2862 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2863 dispatch table if the from-char is a dispatch macro character.
2864 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2865 by the wordsize no longer ignore the last word. (reported by Lutz
2867 * fixed bug in type checking of dynamic-extent variables. (reported
2869 * optimization: sequence traversal functions use their freedom to
2870 coerce function designators to functions.
2871 * optimization: code with many calls to CLOS methods specialized on
2872 CLOS classes has had redundant type checks removed.
2873 * optimization: added declarations to speed up operations that access
2874 the internal character database (for example STRING-UPCASE)
2875 * optimization: comparison operations between floats and sufficiently small
2876 fixnums no longer create extra rationals
2877 * fixed some bugs related to Unicode integration:
2878 ** portions of multibyte characters at the end of buffers for
2879 character-based file input are correctly transferred to the
2880 start of the buffer at the next read.
2881 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2882 passing it through to OPEN.
2883 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2884 argument given to internal calls to OPEN.
2885 ** the built-in comment readers (introduced by character sequences
2886 ";" and "#|") are more forgiving to encoding errors; they will
2887 STYLE-WARN and then attempt to resync the stream at a character
2888 boundary. (thanks to Teemu Kalvas)
2889 * fixed some bugs in the x86-64 port:
2890 ** Negative short int return values from c-calls are sign-extended
2892 ** The stack is aligned to 16-bytes for c-calls, as required by
2893 the ABI. (thanks to Cheuksan Wang)
2894 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2895 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2896 for enums. (thanks to Vincent Arkesteijn)
2897 ** Multiple small optimizations and bugfixes for floating point
2899 * fixed some bugs revealed by Paul Dietz' test suite:
2900 ** Space, Tab, Linefeed, Return and Page have the invalid
2901 secondary constituent character trait.
2902 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2904 ** WITH-INPUT-FROM-STRING should only update the index place on
2906 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2907 works more reliably.
2908 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2909 with one-dimensional arrays with fill pointers.
2910 ** TYPE-OF failed on a complex with an integer realpart and a
2912 ** compiler failure during type inference for the code of form
2913 (IF (EQL X (THE ...)) ...) (MISC.535).
2915 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2916 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2917 platform. The port supports 61-bit fixnums, large memory spaces
2918 and reloading shared object files.
2919 * enhancement: saving cores with foreign code loaded is now
2920 supported on ppc/Darwin in addition to the previously supported
2922 * enhancement: the statistical profiler now walks deeper into the
2923 call stack for more meaningful call-graphs and accrued time
2924 reports (x86/x86-64 only). It also now reports time spent in
2926 * enhancement: it is now possible to trace most individual methods
2927 of a generic function in addition to tracing the generic function
2929 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2931 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2932 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2933 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2934 produces an error. (thanks to Vincent Arkesteijn)
2935 * bug fix: NAMESTRING on pathnames with :WILD components in their
2936 directories works correctly. (thanks to Artem V. Andreev)
2937 * fixed bug 125: compiler preserves identity of closures. (reported
2939 * bug fixed: functions with &REST arguments sometimes failed with
2940 "Undefined function" when compiled with (DEBUG 3). (reported by
2942 * bug fix: overflow during compiling of setting element of a bit
2943 vector with constant index and value. (reported by Timmy Douglas)
2944 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2945 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2946 * on x86 compiler partially supports stack allocation of dynamic-extent
2948 * GO and RETURN-FROM do not check the extent of their exit points
2949 when compiled with SAFETY 0.
2950 * fixed some bugs related to Unicode integration:
2951 ** encoding and decoding errors are now much more robustly
2952 handled; it should now be possible to recover even from invalid
2953 input or output to the terminal. (thanks to Teemu Kalvas)
2954 ** provided a first cut at implementing STRING-TO-OCTETS and
2955 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2956 ** altered the SB-MD5 contributed module slightly, changing the
2957 interface just enough for it to be supportable for builds where
2958 lisp characters are not eight bits.
2959 * fixed some bugs revealed by Paul Dietz' test suite:
2960 ** the FORMATTER-generated functions for ~V[ conditionals require
2961 the correct number of arguments.
2962 ** READ-FROM-STRING returns the mandated second value when applied
2963 to displaced strings.
2964 ** the #\Rubout and #\Backspace characters are treated as invalid
2965 constituent characters by the tokenizer.
2967 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2968 * new feature: reloading changed shared object files with
2969 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2970 * new feature: references to foreign variables and functions
2971 can now be compiled and loaded before the corresponding shared
2972 object file is loaded, as long as the foreign definitions are
2973 available at runtime.
2974 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2975 supported. (thanks to Dan Debertin)
2976 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2977 just keywords. (thanks to Vincent Arkesteijn)
2978 * fixed bug #331: structure-class instances corresponding to
2979 DEFSTRUCT forms are now created eagerly.
2980 * fixed bug #345: backtraces from calls to undefined functions work
2981 on x86 as well. Related bug #61 is now also partially fixed on x86
2982 (backtraces from throws to unknown catch tags.)
2983 * bug fix: lambda-list parsing is now stricter vrt. order and number
2984 of lambda-list keywords.
2985 * bug fix: as specified by AMOP, an error is signalled if a
2986 class-option appears multiple times in a DEFCLASS form. (reported
2988 * bug fix: RANDOM can be compiled when the compiler derives the type
2989 of its numeric argument as a disjoint set of small integers.
2990 (reported by Paul Dietz)
2991 * bug fix: starting a core saved with shared objects loaded when
2992 those objects are not available no longer causes threaded SBCL to
2993 hang. (reported by Sean Ross)
2994 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2996 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2997 argument, which must always be NIL. (reported by Kalle Niemitalo)
2998 * bug fix: printing 1.0d+23 no longer results in an error.
2999 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3000 * bug fix: structure slot setters preserve evaluation order. (thanks
3002 * fixed some bugs related to Unicode integration:
3003 ** RUN-PROGRAM can allow its child to take input from a Lisp
3004 stream. (reported by Stefan Scholl)
3005 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3006 locales. (reported by Ken Causey)
3007 * fixed some bugs revealed by Paul Dietz' test suite:
3008 ** INCF, DECF and REMF evaluate their place form as specified in
3010 ** FORMATTER expands ~{ ~} iteration directives with V or #
3011 parameters correctly.
3012 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3013 consequent uses no arguments correctly.
3014 ** the system has a partial understanding of the (COMPLEX RATIO)
3016 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3019 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3020 * new feature: a build-time option (controlled by the :SB-UNICODE
3021 keyword feature, enabled by default) for building the system with
3022 support for the entire 21-bit character space defined by the
3024 * new feature: the system now has rudimentary external-format
3025 support; the primary user-visible change at this time is that
3026 characters with the high bit set (such as lower-case-e-acute) will
3027 print correctly to a terminal in a UTF-8 environment.
3028 * minor incompatible change: BASE-CHAR no longer names a class;
3029 however, CHARACTER continues to do so, as required by ANSI.
3030 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3031 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3032 has been moved to the SB-EXT package (temporarily re-exported from
3034 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3035 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3037 * fixed bug #351: better error-handlind and reporting for malformed
3039 * fixed bug #350: bignum-printing is now more memory-efficient,
3040 allowing printing of very large bignums, eg. (expt 2 10000000).
3041 (reported by Bruno Haible)
3042 * fixed bug #302: better primitive-type selection for intersection
3044 * fixed bug #308: non-graphic characters now all have names, as
3045 required. (reported by Bruno Haible)
3046 * bug fix: redefining a class with different superclasses now correctly
3047 removes it from the direct-subclasses of its previous superclasses.
3048 (reported by David Morse)
3049 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3050 new value now works. (reported by Bruno Haible)
3051 * bug fix: correct canonicalization of multiple non-standard slot
3052 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3053 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3054 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3055 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3056 now exists, an signals an error.
3057 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3058 during macroexpansion for non-iteration variables as well. (reported
3059 by Bruno Haible for CMUCL)
3060 * bug fix: Cyclic structures and unprintable objects in compiler
3061 messages no longer cause errors. (reported by Bruno Haible)
3062 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3063 and READ-FROM-STRING all now return a primary value of NIL if
3064 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3065 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3066 (reported by Bruno Haible for CMUCL)
3067 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3068 do not designate a condition. (reported by Bruno Haible for
3070 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3071 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3072 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3073 permitting resolution in favour of any of the conflicting symbols.
3074 (reported by Bruno Haible for CMUCL)
3075 * bug fix: EQUAL compiler optimizations is less aggressive on
3076 strings which can potentially compare true despite having distinct
3077 specialized array element types.
3078 * bug fix: unit enumerations can be defined without dividing by
3079 zero. (thanks to Vincent Arkesteijn)
3080 * FORMAT compile-time argument count checking has been enhanced.
3081 (report from Bruno Haible for CMUCL)
3082 * a partial workaround for the bug 262: the compiler does not try to
3083 inline-expand a local function doing RETURN-FROM from a deleted
3084 BLOCK. (thanks to Peter Denno for the bug report and to David
3085 Wragg for the simple test case)
3086 * fixed some bugs revealed by Paul Dietz' test suite:
3087 ** RENAME-PACKAGE allows all package designators as new package
3089 ** constraint propagation and lambda variable substitution are
3090 more cautious in dealing with partially deleted code.
3091 ** compiler sometimes lost reoptimization passes.
3092 ** CERROR, given a condition as condition designator, passes its
3093 remaining arguments to the continue format control without
3095 ** Case-altering FORMAT directives work correctly on non-ASCII
3097 ** The REAL type specifier handles bounds outside the floating
3098 point ranges without signalling FLOATING-POINT-OVERFLOW.
3099 ** Functions with IR1-transformations can create intercomponent
3100 references to global functions.
3101 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3103 ** FORMAT ~R treats a nil value for its first parameter correctly.
3105 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3106 * enhancement: saving cores with foreign code loaded is now
3107 supported on x86/NetBSD and sparc/Linux in addition to the previously
3108 supported platforms.
3109 * bug fix: on some platforms repeated installations caused multiple
3110 copies of HTML documentation to be installed -- should not happen
3111 any more. (reported by Stefan Scholl)
3112 * bug fix: parsing self-recursive alien record types multiple times
3113 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3114 original patch by Helmut Eller for CMUCL)
3115 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3116 (thanks to Richard Kreuter)
3117 * bug fix: defining classes whose accessors are methods on existing
3118 generic functions in other (locked) packages no longer signals
3119 bogus package lock violations. (reported by François-René Rideau)
3120 * bug fix: special variables as DEFMETHOD parameters no longer have
3121 associated bogus type declarations. (reported by David Wragg and
3123 * bug fix: read-write consistency on streams of element-type
3124 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3125 * bug fix: redefiniton of the only method of a generic function with
3126 no DEFGENERIC no longer emits a full WARNING. In addition,
3127 redefinition of generic functions with no DEFGENERIC to an
3128 incompatible lambda list now signals an error. (thanks to Zach
3130 * bug fix: DEFGENERIC now works even when there's a function of the
3131 same name in an enclosing lexical environment. (thanks to Zach
3133 * fixed compiler failure, caused by instrumenting code during
3134 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3135 * optimization: added loop analysis and improved register allocation
3136 * fixed some bugs revealed by Paul Dietz' test suite:
3137 ** POSITION on displaced vectors with non-zero displacement
3138 returns the right answer.
3139 ** (SIMPLE-STRING) is a valid type specifier for sequence
3141 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3143 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3144 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3146 ** The justification version of the FORMAT ~< directive treats
3147 non-zero minpad parameter correctly.
3149 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3150 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3151 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3152 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3153 the supported interface.
3154 * new feature: Single-stepping of code compiled with DEBUG 2 or
3155 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3156 * new feature: saving cores with foreign code loaded is now
3157 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3158 Timothy Moore's work for CMUCL)
3159 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3160 parameters to * instead of NIL if no initform is supplied.
3161 (reported by Johan Bockgaard)
3162 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3163 correctly when FUNCALL appears as the car of the form. Note:
3164 despite this FUNCALL forms are not currently subject to
3165 compiler-macro expansion. (port of Raymond Toy's fix for the
3166 same from CMUCL, reported by Johan Bockgaard)
3167 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3168 (thanks for Teemu Kalvas)
3169 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3170 case instead of terminating the iteration (thanks for Julian
3171 Squires, Sean Champ and Raymond Toy)
3172 * bug fix: incorrect expansion of defgeneric that caused a style
3173 warning. (thanks for Zach Beane)
3174 * bug fix: slot accessor effective method computation works properly
3175 for classes with multiple non-standard applicable methods on
3176 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3177 * on x86 compiler supports stack allocation of results of LIST and
3178 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3179 CMUCL implementation by Gerd Moellmann)
3180 * fixed some bugs revealed by Paul Dietz' test suite:
3181 ** FORMAT strings with both the ~<~:;~> form of the justification
3182 directive and pretty-printing directives cause an error.
3184 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3185 * incompatible change: the internal functions
3186 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3187 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3188 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3189 instead of the old functions.
3190 * new feature: on platforms where "dladdr" is available foreign
3191 function names now appear in backtraces. (based on Helmut Eller's
3193 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3194 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3196 * documentation: ASDF manual is now distributed with SBCL.
3197 * bug fix: SBCL can now load its contributed modules with REQUIRE
3198 even if the system-provided entries have been removed from
3199 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3201 * bug fix: backtraces involving undefined functions or assembly
3202 routines are more informative. (thanks to Brian Downing)
3203 * bug fix: mutually referent alien structures now work correctly.
3204 (reported by Rick Taube)
3205 * bug fix: structures defined by WITH-ALIEN can be referred to
3206 within other definitions in the same WITH-ALIEN.
3207 * bug fix: division operators (MOD, TRUNCATE and the like) with
3208 constant zero divisors and integer dividends no longer generate
3210 * bug fix: provide default methods for INPUT-STREAM-P and
3211 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3212 * bug fix: improve the detection and resolution of MOP metacycles
3213 (where effective method computation depends on the generic function
3214 having its effective method computed). (reported by Bruno Haible)
3215 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3216 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3217 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3218 * bug fix: pathnames with relative directory components can be
3219 represented relative to default pathnames.
3220 * optimization: in taking the GCD of bignums, reduce the two bignums
3221 to approximately the same size (using Euclid's algorithm) before
3222 applying the more sophisticated binary GCD. (thanks to Juho
3224 * optimization: COUNT on bitvectors now operates word-at-a-time.
3225 * optimization: ASH with a positive, but not necessarily constant,
3226 (leftwards) shift, when in a modular context, is compiled to a
3228 * fixed some bugs revealed by Paul Dietz' test suite:
3229 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3230 if the corresponding argument is NIL.
3231 ** FORMAT directives accepting a minpad parameter treat negative
3233 ** literal commas as character parameters to FORMAT directives are
3235 ** literal spaces directly after ~<Newline> directives within a
3236 format-logical-block (~:< ~@:>) do not induce :FILL-style
3237 conditional newlines.
3238 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3239 as specified: it no longer includes conditional newlines).
3240 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3242 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3243 :PER-LINE-PREFIX argument does not evaluate to a string.
3245 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3246 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3247 the manual for details; for now, package locks can be disabled by
3248 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3249 if no major problems are found then it is likely that they will be
3250 compiled in unconditionally.
3251 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3252 unsupported operators on all platforms. To load a shared library
3253 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3254 object file, link it into a shared library outside of SBCL and
3255 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3257 * bug workaround: ROOM T and the GC were not working together
3258 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3259 reporting facility aren't preserved. That reporting has been
3260 disabled, so now until and unless someone figures out how to make it
3261 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3262 * minor incompatible change: as threatened around sbcl-0.8.0, the
3263 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3264 The symbols are also exported from SB-PCL for backwards
3265 compatibility, but more so than before SB-PCL should be treated as
3266 an implementation-internal package.
3267 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3269 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3270 It is known as of this release not to work on the Alpha, however.
3271 * fixed bug #167: errors signalled due to illegal syntax in method
3272 bodies are now more legible.
3273 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3274 designators and can hence be used with TYPEP.
3275 * fixed bug #333: CHECK-TYPE now ensures that the type error
3276 signalled, if any, has the right object to be accessed by
3277 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3278 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3279 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3281 * fixed bug #334: programmatic addition of slots using specialized
3282 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3283 and :ALLOCATION :CLASS slots.
3284 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3285 float exponents. (rereported by Peter Seibel)
3286 * fixed a bug: #\Space (and other whitespace characters) are no
3287 longer considered to be macro characters in standard syntax by
3288 GET-MACRO-CHARACTER.
3289 * fixed bug: initialization of condition class metaobjects no longer
3290 causes an instance of the condition to be created. (reported by
3292 * fixed bug: it is now possible to have slots such that
3293 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3294 description is neither :INSTANCE nor :CLASS.
3295 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3296 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3297 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3298 non-standard SLOT-DEFINITION-ALLOCATION values.
3299 * fixed bugs: various race conditions handling exiting threads.
3300 CL-PPCRE's thread torture test now passes.
3301 * fixed arguably-a-bug: GC time proportional to number of threads in
3302 system even when most of them are idle
3303 * optimization: improved performance of BIT and SBIT on bit-vectors.
3304 * .fasl file incompatibility: The fasl file version number has
3305 been incremented because of changes associated with package locks.
3307 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3308 * minor incompatible change: the system no longer provides
3309 optimization hints (conditions which are TYPEP
3310 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3311 mode; these hints are still emitted when higher SPEED optimization
3313 * new contrib module: a sampling profiler (profiling by statistical
3314 sampling, rather than by instrumenting functions) is available as
3315 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3316 * the behaviour of the standard function ED is now customizeable by
3317 third parties through a hook variable: see ED's documentation
3318 string for information on the protocol.
3319 * the compiler no longer emits efficiency notes for (FUNCALL X)
3320 when the type of X is uncertain under default optimization
3322 * fixed bug 276: mutating a binding of a specialized parameter to a
3323 method to something that is not TYPEP the specializer is now
3325 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3326 exhibit the required behaviour on the x86 platform. (thanks to
3327 Peter van Eynde, Eric Marsden and Bruno Haible)
3328 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3329 even for difficult arguments. (reported by Peter Graves)
3330 * fixed bug 141a: the backquote printer now descends quoted
3332 * fixed another bug in backquote printing: no more destructive
3333 modification of the form's list structure. (reported by Brian
3335 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3336 move between its address being taken and the call to
3337 interrupt_thread, fixing a crashing race condition.
3338 * the SB-POSIX contrib implementation has been adjusted so that it
3339 no longer exhibits ridiculously poor performance when constructing
3340 instances corresponding to C structs.
3342 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3343 * minor incompatible change: the sb-grovel contrib now treats C
3344 structures as alien (in the sense of SB-ALIEN) objects rather than
3345 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3346 has implications for memory management of client code
3347 (sb-grovel-returned objects must now be manually managed) and for
3348 type safety (alien objects now have full types).
3349 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3350 used to control emission of compiler diagnostics, rather than the
3351 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3352 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3353 quality should be considered deprecated.
3354 * install.sh now installs the user manual as well
3355 * (not quite a new documentable feature, but worth considering in
3356 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3357 beginnings of a semantically meaningful condition hierarchy is
3358 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3360 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3361 designator as the defaults argument.
3362 * fixed bug: Displaced arrays whose displaced-to array has become
3363 too small now cause ARRAY-DIMENSION to signal an error, providing
3364 for safer bounds-checking. (reported by Bruno Haible)
3365 * fixed bug: DEFCLASS slot definitions with identical :READER and
3366 :WRITER names now signal a reasonable error. (reported by Thomas
3368 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3370 * fixed bug: Invalid slot specification errors now print correctly.
3371 (thanks to Zach Beane)
3372 * fixed bug 320: Shared to local slot value transfers in class
3373 redefinitions now happen corrently from superclasses as
3374 well. (reported by Bruno Haible)
3375 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3377 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3378 improper lists correctly. (reported by Bruno Haible)
3379 * fixed bug 313: source-transform for <fun-name> was erroneously
3380 applied to a call of a value of a variable with name <fun-name>.
3381 (reported by Antonio Menezes Leitao)
3382 * fixed bug 307: The obsolete instance protocol ensures that
3383 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3384 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3385 remove dead unknown-values globs from the middle of the stack.
3386 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3387 easier to resume long computations after using *BREAK-ON-SIGNALS*
3388 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3389 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3390 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3391 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3392 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3393 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3395 * fixed a (fairly theoretical) bug in string printing: if
3396 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3397 does not have array-element-type equal to the most general string
3399 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3400 function name. (thanks to Nikodemus Siivola)
3401 * fixed bug: compile-time format string checker failed on
3402 non-closed ~{. (reported by Thomas F Burdick)
3403 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3404 don't warn on legal loop code involving more than one aggregate
3405 boolean. (thanks to Nikodemus Siivola)
3406 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3407 in keyword position to MAKE-PACKAGE was not being reported as
3409 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3410 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3412 * fixed bugs 280 and 312: the checking for multiple definitions in a
3413 file is less likely to become confused by uses of inline
3415 * fixed bug: the #S reader macro performs the keyword coercion
3416 specified for slot names. (reported by Kalle Niemitalo)
3417 * fixed bug: lambda lists may contain symbols whose names start with
3418 & but are not lambda-list-keywords; their occurrence triggers a
3420 * fixed bug 321: define-method-combination argument lambda lists do
3421 not cause invalid code to be generated when &optional or &aux
3422 variables have default values. (reported by Bruno Haible)
3423 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3424 have CLOS classes; this appears also to have fixed reported
3425 instability in stack exhaustion detection.
3426 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3427 MUFFLE-WARNING when no associated restart is present is now
3429 * optimization: rearranged the expansion of various defining macros
3430 so that each expands into only one top-level form in a
3431 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3433 * optimization: used a previously little-used slot in symbols to
3434 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3436 * fixed some bugs revealed by Paul Dietz' test suite:
3437 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3439 ** Fixed an optimization bug related to inheritance of initforms
3440 from local to shared slots.
3441 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3442 ** CAST optimizer forgot to flush argument derived type.
3443 ** print/read consistency on floats is now orders of magnitude
3444 more likely. (thanks also to Bruno Haible for a similar report
3446 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3447 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3448 for objects of type REAL. Make it so.
3449 ** SXHASH is specified (infelicitously) to respect similarity,
3450 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3451 it so. (thanks to Markus Ziegler)
3452 ** on the Alpha, the compiler succeeds in compiling functions
3453 returning a known number of arguments greater than 63.
3454 ** fixed handling of invalid NIL arguments in keyword position
3456 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3458 ** provided a readably-printable representation for RANDOM-STATE
3460 ** ensured that pathnames, where they have a namestring, always
3461 print using #P"..." syntax.
3463 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3464 * Support for the forthcoming 2.0 version of the NetBSD kernel
3465 running on x86 hardware has been added. (thanks to Perry
3466 E. Metzger most immediately, and others for their past work)
3467 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3468 current release version; SBCL's OpenBSD support had been broken
3469 since about the time of OpenBSD's switch to ELF binary format.)
3470 * [placeholder for DX summary]
3471 ** user code with &REST lists declared dynamic-extent, under high
3472 speed or space and low safety and debug optimization policy.
3473 * The manual has been converted to Texinfo format and the debugger
3474 chapter from the cmucl manual has been added.
3475 * A facility has been added to extract documentation strings from
3476 sbcl and store them as Texinfo-formatted snippets for inclusion in
3477 the manual (via Texinfo's @include directive)
3478 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3479 the test case to Dave Roberts)
3480 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3481 pointers. (reported by Sean Ross)
3482 * bug fix: PROFILE output is printed nicely even for large numerical
3483 values. (thanks to Zach Beane)
3484 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3485 greater than 32 handle EOF correctly.
3486 * bug fix: on X86 an immediate argument of the IMUL instruction is
3487 correctly printed in disassembly. (thanks to Lutz Euler)
3488 * bug fix: class slots in redefined classes preserve their old
3489 values. (thanks to Bruno Haible and Nikodemus Siivola)
3490 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3491 succeeds. (reported by Marco Baringer)
3492 * fixed some bugs revealed by Paul Dietz' test suite:
3493 ** READ-SEQUENCE now works on ECHO-STREAMs.
3494 ** RATIONALIZE works more according to its specification. (thanks
3497 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3498 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3499 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3500 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3501 should matter to you only if you rebind the printer control
3502 variables and then find you want different bindings in the
3503 debugger than in the ordinary execution of your program.)
3504 * The runtime build system has been tweaked to support building
3505 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3506 assembler and linker. (thanks to Nikodemus Siivola)
3507 * Unbound, undefined, undeclared variables now trigger full
3508 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3509 more often programmer error than deliberate exploitation of undefined
3511 * optimization: the hash algorithm for strings has changed to one
3512 that is less vulnerable to spurious collisions. (thanks to Juho
3514 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3515 needless bounds checking. (thanks to Juho Snellman)
3516 * optimization: implemented multiplication as a modular
3517 (UNSIGNED-BYTE 32) operation on the PPC backend.
3518 * fixed some bugs revealed by Paul Dietz' test suite:
3519 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3521 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3522 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3523 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3525 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3527 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3529 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3530 their output stream on EOF from read.
3531 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3532 have been read to end-of-file.
3533 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3535 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3536 description of determination of which consecutive characters
3538 ** Printing the "Space" character with escaping on now yields "#\\ ",
3539 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3540 ** Reading floating-point numbers with *READ-BASE* set to a number
3541 less than 10 works correctly.
3542 ** Reading floating-point numbers with *READ-BASE* set to a number
3543 more than 10 works correctly.
3544 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3545 the readtable currently in effect.
3547 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3548 * minor incompatible change: parsing of namestrings on a physical
3549 (Unix) host has changed; numbers after the final #\. in a
3550 namestring are no longer interpreted as a version field. This is
3551 intented to be largely invisible to the user, except that the
3552 meaning of the namestring "*.*.*" has changed: it now refers to a
3553 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3554 should usually be replaced by
3555 (make-pathname :name :wild :type :wild :version :wild)
3556 with the added benefit that this is more likely to be portable.
3557 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3558 option to OPEN now signals an error if the file being opened
3559 exists; this may have an impact on existing code.
3560 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3561 signals received, on the PowerPC platforms (both Linux and
3562 Darwin). (thanks to Pierre Mai for pointing out the location of
3564 * several fixes on OS X: The system now builds and runs cleanly on
3565 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3566 (thanks to Brian Mastenbrook)
3567 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3568 second-resolution: integer multiples of 1/3600 between -24 and 24.
3569 (thanks to Vincent Arkesteijn)
3570 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3571 type when called with 1 argument; PEEK-CHAR checked type of
3572 PEEK-TYPE only after having read first character from a
3573 stream. (reported by Peter Graves)
3574 * bug fix: the garbage collector now has much better locality
3575 behaviour, and in particular no longer treats all memory as being
3576 exhausted when many small objects point to each other in a deeply
3578 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3579 recognized as being TYPEP their class.
3580 * bug fix: the PUSHNEW documentation string has been corrected.
3581 (thanks to Vincent Arkesteijn)
3582 * bug fix: defaulting of the value for the last of an atypically
3583 large number of multiple values being bound was not being
3584 performed correctly on the Alpha or PPC platforms
3585 * optimization: implemented multiplication as a modular
3586 (UNSIGNED-BYTE 32) operation on the x86 backend.
3587 * optimization: SEARCH on simple-base-strings can now be open-coded.
3588 (see also contrib/compiler-extras.lisp for inspiration for
3589 teaching the compiler about the Boyer-Moore algorithm).
3590 * value, returned by MAX (and MIN) called with several EQUALP, but
3591 not EQL, arguments now does not depend on compiler settings.
3592 * fixed some bugs revealed by Paul Dietz' test suite:
3593 ** in stack analysis liveness information is propagated from
3594 non-local entry points.
3595 ** pathwise CAST removing failed when the CAST node did not start
3597 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3598 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3600 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3601 host is already defined.
3602 ** RENAME-FILE works on streams instead of signalling an internal
3604 ** PEEK-CHAR uses the current readtable when determining whether
3605 or not a character is whitespace.
3606 ** MERGE-PATHNAMES handles the case when the pathname does not
3607 specify a name while the default-pathname specifies a version.
3608 ** Pathnames now stand a better chance of respecting print/read
3610 ** Attempting to use standardized file system operators with a
3611 pathname with invalid :DIRECTORY components signals a
3613 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3615 ** DIRECTORY on logical pathnames is more correct.
3616 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3617 signal a TYPE-ERROR if their argument is not a stream.
3618 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3619 designator argument does not designate a stream.
3620 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3621 examining the synonym.
3622 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3624 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3625 element-type larger than ([UN]SIGNED-BYTE 32).
3627 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3628 * When built with the :SB-FUTEX feature, threaded builds now take
3629 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3630 for faster/more reliable mutex and condition variable support.
3631 * Incompatible change (but one you probably shouldn't have been using
3632 anyway): the interface and code for arbitrating between multiple
3633 threads in the same user session has been redesigned.
3634 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3635 error when called without an explicit environment argument.
3636 (thanks to Nikodemus Siivola)
3637 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3638 confused about their position. (thanks to Adam Warner and Gerd
3640 * bug fix: Pretty printing backquoted forms with unquotations in the
3641 argument list position of various code constructs such as LAMBDA
3642 now works correctly. (reported by Paul Dietz)
3643 * bug fix: Pretty printing unquotations no longer loses all
3644 stream position information.
3645 * optimization: performance of string output streams is now less
3646 poor for multiple small sequence writes.
3647 * optimization: performance of CSUBTYPEP in the presence of complex
3648 expressions involving CONS and NOT many times has been improved.
3649 (reported by Paul Dietz)
3650 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3652 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3653 streams for the REPL, for the debugger, and so on. (thanks to
3655 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3656 * fixed some bugs revealed by Paul Dietz' test suite:
3657 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3658 is ignored if it is too small, rather than propagating through
3659 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3660 ** extremely complex negations of CONS types were not being
3661 sufficiently canonicalized, leading to inconsistencies in
3663 ** VALUES tranformer lost derived type.
3665 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3666 * fixed a bootstrapping bug: the build process no longer assumes
3667 that the various BOOLE-related constants have the same value in
3668 host and target lisps. (noted by Paul Dietz' test suite on an
3669 SBCL binary built from CLISP)
3670 * The system can now be dynamically linked on the MIPS platform,
3671 which enables dynamic loading of foreign code from Lisp. (thanks
3672 to Ralf Baechle for discussions on the MIPS ABI)
3673 * The system now records debugging information for its own source
3674 files in a filesystem-position-independent manner, relative to
3675 the "SYS" logical host.
3676 * fixed a compiler bug: MV-LET convertion did not check references
3677 to the "max args" entry point. (reported by Brian Downing)
3678 * tweaked disassembly notes to be less confident about proclaiming
3679 some instruction as an LRA. (thanks to Brian Downing)
3680 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3681 now each have their own history, command character, and other
3682 characteristics. (thanks to David Lichteblau)
3683 * fixed some bugs revealed by Paul Dietz' test suite:
3684 ** compiler failure in compiling LOGAND expressions including a
3686 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3687 shift greater than 32.
3688 ** FLUSH-DEST did not mark blocks for type check regeneration.
3689 ** HANDLER-CASE failed to accept declarations in handler clauses
3690 in some circumstances.
3692 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3693 * New code in contrib/sb-introspect (still probably not entirely
3694 stable yet) provides some support for smart Lisp development
3695 environments like SLIME.
3696 * The conditions signalled for errors occurring when loading .fasl
3697 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3698 in a way which should help ASDF recover gracefully.
3699 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3700 stuff has been cleaned up. If you code contrib/ stuff, this might
3701 affect you, and you can look at contrib/README, contrib/STANDARDS,
3702 and/or the 0.8.4.27 diff to check.
3703 * In full calls the compiler now does not generate checks for declared
3704 argument types for all arguments.
3705 * various threading fixes
3706 ** and some experimental patches which didn't make it into
3707 the main tree for this release, but which are shipped in
3708 contrib/experimental-thread.patch as a possible fix for some
3709 failures (deadlock, spinning...) in GC-intensive multithreaded
3711 * fixed PPC build problem (source code incompatibility of different
3712 library versions): added offsetof() hackery which attempts to divine
3713 where glibc maintainers put uc_mcontext today
3714 * fixed bug 282: compiler does not trust type assertions while passing
3715 arguments to a full call.
3716 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3717 &OPTIONAL VALUES type parameter.
3718 * fix bug 214: algorithm for noting rejected templates is now more
3719 similar to that of template seletion. (also reported by rydis on
3721 * fixed bug 141b: printing backquoted information readably and prettily
3722 inserts a space where necessary.
3723 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3724 (CHARACTER 10) are now reported as errors, rather than propagated
3725 as unknown types. (reported by piso on #lisp)
3726 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3727 with values NIL and :ERROR. (thanks to Milan Zamazal)
3728 * fixed bug 191c: CLOS now does proper keyword argument checking as
3729 described in CLHS 7.6.5 and 7.6.5.1.
3730 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3731 longer raise an error; further, using a list as a for-as-arithmetic
3732 counter now raises a meaningful error.
3733 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3734 now understood by sequence creation functions such as MAKE-SEQUENCE
3736 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3737 a STRING-INPUT-STREAM.
3738 * compiler enhancement: SIGNUM is now better able to derive the type
3740 * type declarations inside WITH-SLOTS are checked. (reported by
3742 * fixed some bugs revealed by Paul Dietz' test suite:
3743 ** incorrect optimization of TRUNCATE for a positive first
3744 argument and negative second.
3745 ** compiler failure in let-convertion during flushing dead code.
3746 ** compiler failure while deriving type of TRUNCATE on an
3747 interval, containing 0.
3748 ** ASH of a negative bignum by a negative bignum count now returns
3750 ** intersection of CONS types now canonicalizes properly, fixing
3751 inconsistencies in SUBTYPEP.
3753 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3754 * incompatible change: The --disable-debugger command line
3755 option now clobbers the debugger at a more fundamental
3756 level, by redefining #'INVOKE-DEBUGGER instead of by
3757 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3758 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3759 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3760 enter the debugger REPL and then suffer recursive errors
3761 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3762 while under the new system, BREAK in --disable-debugger mode
3763 terminates the system just as an unhandled error would.
3764 * fixed compiler performance when processing loops with a step >1;
3765 * bug fix: DOCUMENTATION now retrieves generic function
3766 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3767 support has been systematized, and now supports the methods
3768 specified by ANSI, along with a default method and a method for
3769 slot documentation. (reported by Nathan Froyd)
3770 * bug fix: effective methods associated with a generic function are
3771 no longer cached over a change of that generic function's method
3772 combination. (reported by Andreas Fuchs)
3773 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3774 names a non-existent directory. (thanks to Andreas Fuchs)
3775 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3776 the PPC platform, lead to stack corruption; this has been fixed.
3777 (reported by Rainer Joswig)
3778 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3779 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3780 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3781 arithmetic in general, is now much more reliable on the PPC
3783 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3784 platform now returns the right answer.
3785 * optimization: restored some effective method precomputation in
3786 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3787 precomputation is now tunable.
3788 * optimization: compiler-internal data structure use has been
3789 reviewed, and changes have been made that should improve the
3790 performance of the compiler by about 20%.
3791 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3792 simple-base-strings and simple-bit-vectors is improved.
3793 * optimization: the optimization of 32-bit logical and arithmetic
3794 functions introduced in version 0.8.3 on the x86 has been
3795 implemented on the mips, ppc and sparc platforms; an
3796 implementation of the same facility, but for 64-bit arithmetic,
3797 has been added for the alpha.
3798 * microoptimization: the compiler is better able to make use of the
3799 x86 LEA instruction for multiplication by constants.
3800 * bug fix: in some situations compiler did not report usage of
3801 generic arithmetic in (SPEED 3) policy.
3802 * bug 145b fix: compiler used wrong type specifier while converting
3803 MEMBER-types to numeric.
3804 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3806 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3807 index argument now works properly on the Alpha platform.
3808 * bug fix: floating point exception treatment on the Alpha platform
3810 * bug fix: FILE-POSITION works much better on string input and
3811 output streams. (thanks to Nikodemus Siivola)
3812 * bug fix: many threading/garbage collection symptoms sorted.
3813 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3814 might be pseudo-atomic.
3815 * internal change: Stopping for GC is now done with signals not
3816 ptrace. GC is now done in whichever thread wanted it, instead of
3818 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3820 * bug fix: result form in DO is not contained in the implicit
3822 * incompatible change: ICR structure is changed; the value part of
3823 CONTINUATION is now called LVAR; corresponding functions are
3824 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3825 * added type deriver for ISQRT (thanks to Robert E. Brown).
3826 * bug fix: better support for loading from the command line when an
3827 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3829 * fixed some bugs revealed by Paul Dietz' test suite:
3830 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3831 ** ROUND and FROUND now give the right answer when given very
3832 small float arguments.
3833 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3835 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3836 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3837 ** LCM should return a non-negative integer.
3838 ** PARSE-INTEGER returned the index of a terminator instead of the
3839 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3840 ** PARSE-INTEGER returned an incorrect index being applied to a
3842 ** LCM with two arguments of 0 returns 0 rather than signalling
3844 ** unsigned addition of a 32-bit constant with the high bit set no
3845 longer causes an internal compiler error on the x86.
3846 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3847 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3848 with negative last argument.
3849 ** byte specifiers with zero size and position no longer cause
3850 an error during type derivation.
3851 ** bignum multiplication on the Alpha platform now returns the
3853 * porting: The system now builds on SuSE AMD64, although it still
3854 generates a 32-bit binary.
3855 * .fasl file incompatibility: The fasl file version number has
3856 been incremented (because of the changes to internal compiler
3857 data structures referred to above).
3859 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3860 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3861 more accurately, on the Darwin kernel running on PowerPC hardware.
3862 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3863 * Compiler code deletion notes now signal a condition of type
3864 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3865 an associated MUFFLE-WARNING restart.
3866 * The compiler now performs limited argument count validation of
3867 constant format strings in FORMAT, and where appropriate in ERROR,
3868 CERROR and WARN. (thanks to Gerd Moellmann)
3869 * New ASDF-INSTALL contrib can be used for automatic download and
3870 installation of third-party Lisp code from CCLAN or other sites
3872 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3873 which forces another thread to execute a function supplied by the
3875 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3876 now accept and act upon their :ELEMENT-TYPE keyword argument.
3877 (reported by Martin Atzmueller, Edi Weitz)
3878 * bug fix: FILE-POSITION now accepts position designators up to
3879 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3880 is the greater. (thanks to Patrik Nordebo)
3881 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3882 Kalle Olavi Niemitalo)
3883 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3884 printable. (reported by Eric Marsden)
3885 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3886 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3887 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3888 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3889 (thanks to Stig Sandoe)
3890 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3891 UNREAD-CHAR now correctly includes the unread character in the
3892 target sequence. (thanks to Gerd Moellmann)
3893 * bug fix in threaded builds: the system can now be suspended and
3894 resumed by shell job control with minimal disruption.
3895 * bug fixes in times and timezones >2038AD
3896 * better handling of "where is GNU make?" problem in build scripts
3897 (thanks to Nikodemus Siivola)
3898 * new optimization: inside a named function any reference to a
3899 function with the same name is considered to be a self-reference;
3900 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3901 optimization quality.
3902 * new optimization on x86: logical functions and + now have
3903 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3904 used when the result is truncated to 32 bits.
3905 * VALUES declaration is partially enabled.
3906 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3907 * fixed some bugs revealed by Paul Dietz' test suite:
3908 ** The system now obeys the constraint imposed by
3909 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3910 types form a lattice under type intersection.
3911 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3912 ** ASSOC now ignores NIL elements in an alist.
3913 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3914 and (1+ MOST-POSITIVE-FIXNUM) answers.
3915 ** The addition of a method with invalid qualifiers to a generic
3916 function does not cause an error to be signalled immediately;
3917 a warning is signalled, and the error is generated only on
3918 calling the generic function.
3919 * changed .fasl file version number, in part to add type codes for
3920 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3921 obscure ANSI requirements
3923 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3924 * fixed bug 148: failure to inline-expand a local function left
3925 garbage, confusing the compiler.
3926 * fixed bugs 3cd: structure slot readers perform type check if the
3927 slot can have an invalid value (i.e. it is either not initialized
3928 or can be written with a less specific slot writer).
3929 * bug fix: the compiler now traps array references to elements off
3930 the end of an array; previously, the bounds checking in some
3931 circumstances could go off-by-one.
3932 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3934 * type declarations for array element types now obey the description
3935 on the CLHS page "Declaration TYPE", as per discussions on
3936 sbcl-help around 2003-05-08. This means that a declaration
3937 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3938 declaration, all references to BAR will be asserted or assumed
3939 (with THE, so dependent on compiler policy) to involve objects of
3940 type FOO. Note that no such declaration is implied in
3941 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3942 * declared types of functions from the "Conditions"
3943 chapter. (reported by Paul Dietz)
3944 * bug fix: CERROR accepts a function as its first argument.
3945 * bug fix: NTH an NTHCDR accept a bignum as index
3946 arguments. (reported by Adam Warner)
3947 * optimization: character compare routines now optimize comparing
3948 against a constant character. (reported by Gilbert Baumann)
3949 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3950 argument now works properly on the MIPS platform.
3951 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3952 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3953 declared to have a functional type, does not cause an error
3955 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3956 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3957 * fixed bug: if last continuation of a deleted block has a
3958 destination, this destination should be deleted too. (reported by
3960 * fixed a bug in the bootstrap process: the host compiler's values
3961 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3962 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3963 test case from Patrik Nordebo)
3964 * improved the ability of the disassembler on the PPC platform to
3965 provide helpful disassembly notes.
3966 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3967 the class in more cases than previously.
3968 * bug fix: FILE-POSITION now understands :START and :END for
3969 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3970 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3971 8) data. (thanks to David Lichteblau)
3972 * bug fix: it is possible to add a method to a generic function
3973 without lambda list.
3974 * bug fix: reader failed to signal END-OF-FILE inside an
3975 object representation. (reported by Nikodemus Siivola)
3976 * fixed some bugs revealed by Paul Dietz' test suite:
3977 ** LAST and [N]BUTLAST should accept a bignum.
3978 ** condition slot accessors are methods.
3979 ** (VECTOR NIL) is a subtype of STRING.
3981 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3982 * minor incompatible change: some nonsensical specialized lambda
3983 lists (used in DEFMETHOD) which were previously ignored now signal
3985 * minor incompatible change: the system is now aware of the types of
3986 variables in the COMMON-LISP package, and will signal errors for
3987 most violations of these type constraints (where previously they
3988 were silently accepted).
3989 * minor incompatible change: COMPILE-FILE now uses the freedom
3990 afforded (ANSI 3.2.2.3) to use derived function types for
3991 functions defined in the same file. This also permits the system
3992 to warn on static type mismatches and function
3993 redefinition. (Currently it does not work with high DEBUG level.)
3994 * minor incompatible change: VALUES declaration is disabled.
3995 * When issuing notes, the compiler now signals a condition of type
3996 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3997 restart for use in user handlers. It is expected that the
3998 COMPILER-NOTE condition will eventually become a condition
3999 supertype to a hierarchy of note types, which will then be
4000 handleable in a similar fashion. However, at the moment, no such
4001 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4002 but it's an implementation detail, not a classification for the
4004 * Changes in type checking closed the following bugs:
4005 ** type checking of unused values (192b, 194d, 203);
4006 ** template selection based on unsafe type assertions (192c, 236);
4007 ** type checking in branches (194bc).
4008 * A short form of VALUES type specifier has ANSI meaning (it has
4009 increased the number of situations when SBCL cannot perform type
4011 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4012 keywords or constants is permissible.
4013 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4014 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4015 classes. (thanks to Antonio Martinez)
4016 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4017 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4018 argument to a pretty-print stream. Instead, it leaves any such
4019 operations to DESCRIBE-OBJECT methods.
4020 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4022 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4023 lambda lists. (thanks to David Lichteblau)
4024 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4025 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4026 (thanks to Gerd Moellmann)
4027 * fixed bug 246: increased compilation speed of long
4028 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4030 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4032 * DEFCONSTANT now throws a condition of type
4033 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4034 constant to a non-EQL value; CONTINUE and ABORT restarts
4035 respectively change and preserve the value.
4036 * fixed bug 63: The code walker, part of the implementation of CLOS,
4037 is now better at handling symbol macros.
4038 * bug fix: There is no longer an internal implementation type named
4039 CL:LENGTH. (reported by Raymond Toy)
4040 * bug fix: In macro-like defining macros/special operators the
4041 implicit block does not enclose the lambda list.
4042 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4043 enclosed in parentheses) are not suitable as type specifiers, and
4044 their use properly signals an error now.
4045 * bug fix: An argument count mismatch for a type specifier in code
4046 being compiled no longer causes an unhandled error at compile
4047 time, but signals a compile-time warning.
4048 * fixed simple vector readable printing
4049 * bug fix: DESCRIBE takes more care over whether the class
4050 precedence list slot of a class is bound before accessing it.
4051 (reported by Markus Krummenacker)
4052 * bug fix: FORMATTER can successfully compile pretty-printer format
4053 strings which use variants of the ~* directive inside.
4054 * bug fix: SEARCH now applies its TEST predicate to the elements of
4055 the arguments in the correct order. (thanks to Wolfhard Buss)
4056 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4057 in type inference. (thanks to Robert E. Brown)
4058 * bug fix: Reading in symbols with an explicit package name of ""
4059 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4060 * fixed some bugs revealed by Paul Dietz' test suite:
4061 ** NIL is now allowed as a structure slot name.
4062 ** Arbitrary numbers, not just REALs, are allowed in certain
4063 circumstances in LOOP for-as-arithmetic clauses.
4064 ** Multiple class redefinitions before slot access no longer
4065 causes a type error.
4066 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4067 association between the name and a class.
4068 ** Generic functions with non-standard method-combination and over
4069 five methods all of which return constants no longer return NIL
4070 after the first few invocations. (thanks to Gerd Moellmann)
4071 ** CALL-NEXT-METHOD with no arguments now passes the original
4072 values of the arguments, even in the presence of assignment.
4073 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4075 ** DISASSEMBLE works with closures and funcallable instances.
4076 ** ADD-METHOD now returns the generic function, not the new method.
4077 ** FIND-METHOD signals an error if the lengths of the specializers
4078 is incompatible with the generic function, even if the ERRORP
4080 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4081 which its argument is a member.
4082 ** DEFCLASS only redefines the class named by its class-name
4083 argument if that name is the proper name of the class;
4084 otherwise, it creates a new class.
4085 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4086 of the UNBOUND-SLOT condition to the name of the slot.
4087 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4088 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4089 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4090 SLOT-MAKUNBOUND in the specified fashion.
4092 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4093 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4094 cross-compilation host. As a consequence, we can now bootstrap our
4095 way up to SBCL starting with a bare gcc toolchain and human-readable
4096 source code (first the source to CLISP, then the source to SBCL).
4097 * A contributed module containing a partial implementation of the
4098 simple-streams interface has been included. (thanks to Rudi
4100 * A contributed module implementing the RFC1321 Message Digest
4101 Algorithm, known as MD5, has been included.
4102 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4103 no longer has any effect, as the code controlled by this feature
4104 has been deleted. (As far as we know, no-one has ever built using
4105 this feature, and its semantics were confused in any case).
4106 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4107 work on conditions (as required by the ANSI specification),
4108 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4109 expected behaviour on conditions. Users should note, however,
4110 that such behaviour is not required by the ANSI specification,
4111 and so use of this behaviour may render their code unportable.
4112 * fixed some bugs revealed by Paul Dietz' test suite:
4113 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4115 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4116 ** SXHASH on condition objects no longer returns NIL.
4117 ** :ALLOCATION :CLASS slots are better treated; their values are
4118 updated on class redefinition, and initforms inherited from
4119 superclasses are applied.
4120 ** REMOVE-METHOD returns its generic function argument even when
4121 no method was removed.
4122 ** SHARED-INITIALIZE now initializes the values of the requested
4123 slots, including those with :ALLOCATION :CLASS.
4124 ** ALLOCATE-INSTANCE now works on structure classes defined via
4125 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4127 ** SLOT-EXISTS-P now works on conditions, as well as structures
4129 ** MAKE-LOAD-FORM now has the required methods on
4130 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4131 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4132 keyword, and now implements the SLOT-NAMES argument.
4133 ** methods with &OPTIONAL arguments no longer allow too many
4134 arguments to be passed in the call without error.
4135 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4136 option is consistent with the required arguments of the generic
4137 function lambda list.
4138 * bug fix: REQUIRE accepts a string designator. (Thanks to
4140 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4141 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4142 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4143 * bug fix: The compiler now checks for duplicated variables in macro
4145 * bug fix: SETQ on globals returns the correct value.
4146 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4147 not a COMPILER-ERROR (followed by some other strange error on
4148 choosing the CONTINUE restart).
4149 * bug fix: make.sh and friends are now more consistent in the way that
4150 they look for GNU "make".
4152 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4153 * experimental native threads support (on x86 Linux >=2.4 only).
4154 This is not compiled in by default: you need to add :SB-THREAD to
4155 the target features. See the "Beyond ANSI" chapter of the manual
4157 * fix for longstanding nonANSIism: The old distinction between
4158 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4159 The return value from CL:FIND-CLASS is now a CLOS class, and
4160 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4161 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4162 * An interface to the MetaObject Protocol, as described in Kiczales,
4163 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4164 MIT Press, 1991, is available from the SB-MOP package.
4165 * incompatible change: the SB-PCL package should now be considered
4166 a private implementation detail, and no longer a semi-private MOP
4168 * minor incompatible change: due to rearrangement for threads, the
4169 control stack and binding stack are now allocated at arbitrary
4170 addresses instead of being hardcoded per-port. Users affected by
4171 this probably have to be doing advanced things with shared
4172 libraries, and will know who they are.
4173 * minor incompatible change: Previously, all --eval forms used were
4174 processed with READ before any of them were processed with EVAL.
4175 Now each --eval form is processed with both READ and EVAL before
4176 the next --eval form is processed. (Thus package operations like
4177 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4178 work as the user might reasonably expect.)
4179 * minor incompatible change: *STANDARD-INPUT* is now only an
4180 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4182 * minor incompatible change: Y-OR-N-P is now character-oriented,
4183 not line oriented. Also, YES-OR-NO-P now works without errors.
4184 (thanks to Antonio Martinez)
4185 * sb-aclrepl module improvements: an integrated inspector, added
4186 repl features, and a bug fix to :trace command.
4187 * Known functions, which cannot be open coded by the backend, are
4188 considered to be able to check types of their arguments. (fixing
4189 a bug report by Nathan J. Froyd)
4190 * fixed a bug in computing method discriminating functions: It is
4191 now possible to define methods specialized on classes which have
4192 forward-referenced superclasses. (thanks to Gerd Moellmann)
4193 * fixed evaluation order in optional entries (reported by Gilbert
4195 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4196 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4197 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4198 required-by-AMOP NAME argument, as well as CLASS and
4199 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4200 * fixed bug 20: DEFMETHOD can define methods using names that are
4201 not the proper names of classes to designate class specializers.
4202 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4203 Unix file descriptors, instead of blowing up. (thanks to Antonio
4205 * Garbage collection refactoring: user-visible change is that a
4206 call to the GC function during WITHOUT-GCING will not do garbage
4207 collection until the end of the WITHOUT-GCING. If you were doing
4208 this you were probably losing anyway.
4209 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4210 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4211 TYPEP the latter but not the former.
4212 * The compiler issues a full WARNING for calls to undefined functions
4213 with names from the CL package.
4214 * MAP-INTO for a vector destination is open coded. (reported by
4215 Brian Downing on c.l.l)
4216 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4217 documentation string.
4218 * fixed some bugs revealed by Paul Dietz' test suite:
4219 ** COPY-ALIST now signals an error if its argument is a dotted
4221 ** Condition slots are now accessed more correctly in the presence
4222 of multiple initargs for a given slot.
4223 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4224 exclude restarts of the same name associated with a different
4226 ** DEFCLASS of forward-referenced classes with another
4227 forward-referenced class in the superclasses list no longer
4229 ** Condition slots are now initialized once each, not multiple
4230 times. (thanks to Gerd Moellmann)
4231 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4233 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4234 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4235 arguments contain duplicated elements.
4236 ** RESTART-CASE understands local macros.
4237 ** RESTART-CASE associates exactly its own restarts with a condition.
4238 ** ENDP in safe mode checks its argument to be of type LIST.
4239 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4240 in question is unbound.
4241 ** Optimized MAKE-INSTANCE functions no longer cause internal
4242 assertion failures in the presence of duplicate initargs.
4243 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4244 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4245 propagated even in the ctor optimized implementation of
4247 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4249 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4250 * a better implementation of SXHASH on (simple) bit vectors,
4251 measured both in execution speed and in distribution of results
4252 over the positive fixnums, has been installed. Likewise, a better
4253 implementation of EQUAL for simple bit vectors is now available.
4254 * fixed CEILING optimization for a divisor of form 2^k.
4255 * fixed bug 240 (emitting extra style warnings "using the lexical
4256 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4257 by Antonio Martinez)
4258 * fixed SXHASH, giving different results for NIL depending on type
4259 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4260 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4261 variable. (found by Rolf Wester)
4262 * SBCL does not ignore type declarations for special
4263 variables. (reported by rif on c.l.l 2003-03-05)
4264 * some bug fixes in contrib/sb-aclrepl/
4265 * fixed some bugs revealed by Paul Dietz' test suite:
4266 ** a bug in the CONS type specifier, whereby the CAR and CDR
4267 types got intertwined, has been fixed;
4268 ** the type system is now able to reason about the interaction
4269 between INTEGER and RATIO types more completely;
4270 ** APPEND, [N]REVERSE and NRECONC check that those their
4271 arguments, which must be proper lists, are really so;
4272 ** An array specialized to be unable to hold elements has been
4273 implemented, as required -- yes, really -- by ANSI;
4274 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4275 on malformed property lists;
4277 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4278 * incompatible packaging change: in line with Unix convention,
4279 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4280 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4281 * REQUIRE and PROVIDE are now optionally capable of doing something
4282 useful. See the documentation string for REQUIRE.
4283 * infrastructure for a managed SBCL contrib system: contributed
4284 modules in this release include:
4285 ** the ASDF system definition facility;
4286 ** an interface to the BSD Sockets API;
4287 ** an ACL-like convenience interface to the repl;
4288 (thanks to Kevin Rosenberg)
4289 ** an implementation of ROTATE-BYTE, with efficient implementation
4291 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4292 gives a closer approximation to the right answer than previously.
4293 (thanks to Raymond Toy)
4294 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4295 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4296 optional environment arguments, as required by ANSI.
4297 * fixed bugs in other functions taking environment objects, allowing
4298 calls with an explicit NIL environment argument to be compiled
4300 * fixed bug 228: primary return values from
4301 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4302 COMPILE or FUNCTION.
4303 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4304 :TYPE will no longer signal errors on innocuous objects.
4305 * fixed bug 231b: SETQ is better at respecting type declarations in
4306 the lexical environment.
4307 * fixed a bug in DEFCLASS: classes named by symbols with no or
4308 unprintable packages can now be defined.
4309 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4310 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4311 * fixed compiler failure related to checking types of functions.
4312 (reported by Robert E. Brown)
4313 * the compiler is now much more consistent in its error-checking
4314 treatment of bounding index arguments to sequence functions: in
4315 (SAFETY 3) code, errors will be signalled in almost all cases if
4316 invalid sequence bounding indices are passed to functions defined
4317 by ANSI to operate on sequences.
4318 * fixed a bug in the build procedure: documentation of SBCL-specific
4319 packages is now preserved and available in the final Lisp image.
4320 * lifted FDEFINITION lookup out of loops in the implementation of
4321 many list operations. (thanks to Robert E. Brown)
4322 * fixed a bug in the reader: the #n# reader macro now works for
4323 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4324 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4325 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4326 E. Brown and Tony Martinez respectively)
4327 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4328 SLOT-BOUNDP: in particular, it is now able to optimize them much
4329 better, and is now not vulnerable to having packages renamed.
4330 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4331 always called when a slot is not present in an instance. (thanks
4333 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4334 longer signal an error on unreading a character following EOF on
4335 the previous constituent stream. (thanks to Tony Martinez)
4336 * fixed some bugs revealed by Paul Dietz' test suite:
4337 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4338 not just nonnegative fixnums;
4339 ** the logical bit-array operators such as BIT-AND now accept an
4340 explicit NIL for their "opt-arg" argument (to indicate a
4341 freshly-consed result bit-array);
4342 ** ELT now signals an error on an invalid sequence index in safe
4344 ** the type system is now cleverer about negations of numeric
4345 types, and consequently understands the BIGNUM and RATIO types
4347 ** the type system is now cleverer about the interaction between
4348 INTEGER and RATIO types: while bugs still remain, many more
4349 cases are accurately computed;
4350 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4351 if it is in the last clause;
4352 ** CONSTANTLY now correctly returns a side-effect-free function in
4354 ** DECLARE is no longer treated as a special-operator; in
4355 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4356 * incremented fasl file version number due to the change in the
4357 DEFSTRUCT-SLOT-DESCRIPTION structure.
4359 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4360 * minor incompatible change: code processed by the "interpreter" or
4361 EVAL now has a compilation optimization policy of (DEBUG 2)
4362 (changed from (DEBUG 1)) to improve debuggability of interactive
4363 development, and to allow the use of the debug RETURN command in
4365 * an experimental implementation of the RETURN command for the
4366 debugger has been included. (thanks to Frederik Kuivinen)
4367 * fixed bug 62: constraints were not propagated into a loop.
4368 * fixed bug in embedded calls of SORT (reported and investigated by
4370 * fixed some bugs revealed by Paul Dietz' test suite:
4371 ** printing and reading of arrays with some dimensions having
4372 length 0 (thanks to Gerd Moellmann);
4373 ** BOA constructor with &AUX argument without a default value does
4374 not cause a type error;
4375 ** CONSTANTP now returns true for all self-evaluating objects.
4377 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4378 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4379 accessors that are related by inheritance, as specified in the
4380 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4381 Valtteri Vuorikoski)
4382 * The compiler is now able to inline functions that were defined in
4383 a complex lexical environment (e.g. inside a MACROLET).
4384 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4386 * Support for the upcoming FreeBSD-5.0 release has been included.
4387 (thanks to Dag-Erling Smorgrav)
4388 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4389 effect when it is not in a toplevel context.
4390 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4391 stand a better chance of being correct. (thanks to Gerd
4393 * fixed bug in COERCE, which now signals an error on coercing a
4394 rational to a bounded real type which excludes the expected
4396 * The compiler is now able to derive types more accurately from the
4397 COERCE and COMPILE functions.
4398 * fixed bug 223: functional binding is considered to be constant
4399 only for symbols in the CL package.
4400 * fixed bug 231: SETQ did not check the type of a variable being set
4401 (reported by Robert E. Brown)
4402 * A new optimization for MAKE-INSTANCE has been included, fixing
4403 various bugs (including relating to :ALLOCATION :CLASS slots and
4404 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4406 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4407 ** As required by ANSI, LOOP now disallows anonymous collection
4408 clauses such as COLLECT I in conjunction with aggregate boolean
4409 clauses such as THEREIS (= I 1);
4410 ** LOOP now signals an error when any variable is reused in the
4411 same loop (including the potentially useful construct analogous
4412 to WITH A = 1 WITH A = (1+ A);
4413 ** IT is only a special loop symbol within the first clause of a
4414 conditional loop clause;
4415 ** LOOP with a typed iteration variable over a hashtable now
4416 signals a type error iff it should.
4417 * fixed some other bugs revealed by Paul Dietz' test suite:
4418 ** FILE-STREAM now names the class previously known as FD-STREAM;
4419 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4420 argument) no longer signals an error;
4421 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4422 of the slot symbol, rather than using the current package
4423 ((:CONC-NAME "") continues to intern the slot's name in the
4425 * incremented fasl file version number, because of the incompatible
4426 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4427 of the new implementation of DEFINE-COMPILER-MACRO.
4429 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4430 * Support for building SBCL for MIPS platforms running in
4431 little-endian mode has now been checked in, and basic
4432 functionality on said platforms verified.
4433 * minor incompatible change: PCL now records the pathname of a file
4434 in which methods and the like are defined, rather than its
4436 * minor incompatible change: TRUENAME now considers the truename of
4437 a file naming a directory to be the pathname with :DIRECTORY
4438 component indicating that directory.
4439 * minor incompatible change: a NAMED clause in the extended form of
4440 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4441 reason for the previous behaviour is unclear.
4442 * more systematization and improvement of CLOS and MOP conformance
4443 in PCL (thanks to Gerd Moellman and Pierre Mai):
4444 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4446 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4447 primary methods with no specializers;
4448 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4450 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4451 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4452 FORWARD-REFERENCED-CLASSes; error reporting on
4453 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4455 ** SXHASH on CLOS instances now uses a slot internal to the
4456 instance to return different numbers on distinct instances,
4457 while preserving the same return value through invocations of
4459 ** DEFMETHOD signals errors when methods with longer incongruent
4460 lambda lists are added to generic functions;
4461 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4462 CLASS, as specified in AMOP;
4463 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4464 on the order returned by the primary method for classes of
4465 class STANDARD-CLASS;
4466 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4467 * fixed some bugs shown by Paul Dietz' test suite:
4468 ** DOLIST puts its body in TAGBODY;
4469 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4471 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4472 value producing form;
4473 ** if more variables are given to PROGV than values, extra
4474 variables are bound and made to have no value;
4475 ** NSUBSTITUTE on list arguments gets the right answer with
4477 ** ELT signals an error of type TYPE-ERROR when the index argument
4478 is not a valid sequence index;
4479 ** LOOP signals (at macroexpansion time) an error of type
4480 PROGRAM-ERROR when duplicate variable names are found;
4481 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4482 ** FUNCALL of special-operators now cause an error of type
4484 ** PSETQ now works as required in the presence of side-effecting
4485 symbol-macro places;
4486 ** NCONC accepts any object as its last argument;
4487 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4489 ** loop-for-as-package does not require a package to be explicitely
4491 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4493 * fixed bug 166: compiler preserves "there is a way to go"
4494 invariant when deleting code.
4495 * fixed bug 172: macro lambda lists with required arguments after
4496 &REST arguments now cause an error to be signalled. (thanks to
4498 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4499 bug. (thanks to Matthew Danish)
4500 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4502 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4503 arguments are lexically rebound. (thanks to Gerd Moellmann and
4505 * fixed bug 194: error messages are now more informative when there
4506 is no primary method applicable in a call to a generic
4507 function. (thanks to Gerd Moellmann)
4508 * fixed bug in command line argument checking (thanks to Julian
4510 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4511 (thanks to Matthew Danish)
4512 * incremented fasl file version number, because of the
4513 SXHASH-related changes in the layout of CLOS data structures
4515 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4516 * minor incompatible change: The runtime (the Unix executable named
4517 "sbcl") is now much pickier about the .core files it will load.
4518 Essentially it now requires .core files to descend from the same
4519 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4520 as the runtime does. (The intent is to prevent the crashes which
4521 can occur, and which can even be reported as mysterious failures,
4522 when people patch the sources or change the build parameters
4523 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4524 sbcl and .core files.)
4525 * fixed bug: VALUES-LIST is no longer optimized away.
4526 * fixed bug 142: The FFI conversion of C string values to Lisp
4527 string values no longer conses excessively. (thanks to Nathan
4528 Froyd porting Raymond Toy's fix to CMU CL)
4529 * began to systematize and improve MOP conformance in PCL (thanks to
4530 Nathan Froyd, Gerd Moellman and Pierre Mai):
4531 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4533 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4534 ** FINALIZE-INHERITANCE is now called on class finalization;
4535 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4536 argument precedence order.
4537 * fixed bug 202: The compiler no longer fails on functions whose
4538 derived types contradict their declared type.
4539 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4540 so it can be non-toplevel.
4541 * The fasl file version number has changed (because of the new
4542 implementation of DEFMACRO).
4543 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4544 safe code, that any length requirement by their type-specifier
4545 argument is valid. The exceptions to this are described in bug
4547 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4548 functions now check the types of their inputs as required by ANSI.
4549 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4550 introduced symbol is DECLAREd to be SPECIAL.
4551 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4552 * fixed bug: :COUNT argument to sequence functions may be negative
4553 * fixed bug: body of DO-SYMBOLS may contain declarations
4554 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4555 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4556 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4557 symbol macro only once
4558 * fixed printing of call frame when argument list is unavailable
4559 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4560 * compiler no longer signals WARNING on unknown keyword
4563 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4564 * A beta-quality port to the mips architecture running Linux,
4565 based on the old CMUCL backend, has been made. It has been tested
4566 on a big-endian kernel, and works sufficiently well to be able to
4567 rebuild itself; it has not been tested in little-endian mode.
4568 * fixed an inconsistency between gencgc.c and purify.c which made
4569 dumping/loading .core files unreliable
4570 * fixed bug 120a: The compiler now deals correctly with IFs where
4571 the consequent is the same as the alternative, instead of
4572 misderiving the return type. (thanks to Alexey Dejneka)
4573 * fixed bug 113: Logical pathnames are now dumpable (the logical
4574 host is resolved at load-time, throwing an error if it is not
4576 * fixed bug 174: FORMAT's error message is slightly clearer when a
4577 non-printing character is used in a format directive.
4578 * fixed several bugs in compiler checking of type declarations, i.e.
4579 violations of the Python "declarations are assertions" principle
4580 (thanks to Alexey Dejneka)
4581 * fixed several bugs in PCL's error checking (thanks to Gerd
4583 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4585 * fixed bug in compilation of functions as first class values
4586 (thanks to Antonio Martinez-Shotton)
4587 * The compiler's handling TYPE-ERRORs which it can prove will
4588 inevitably happen at runtime has been cleaned up and corrected
4589 in several ways. (thanks to Alexey Dejneka)
4590 * improved argument type checking for various basic arithmetic
4591 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4592 lavished on them in the past that they can be compiled in many
4593 ways in different special cases
4594 * fixed bug 181: compiler checks validity of user supplied type
4596 * cleaned up code flushing in optimization: Function calls which
4597 should signal errors for safety purposes (e.g. which ANSI says
4598 should signal errors when their arguments are of incorrect type)
4599 are no longer optimized away.
4600 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4601 * incremented fasl file version number, because changes in the
4602 implementation of sequence functions like COERCE caused
4603 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4604 in old inline expansions) to become undefined. (Actually these
4605 changes were later undone, so we might very well be binary
4606 compatible with 0.7.7 after all, but leaving the version number
4607 incremented seemed like the simplest and most conservative
4610 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4611 * An alpha-quality port to the parisc architecture running Linux,
4612 based on the old CMUCL backend, has been made. This, even more so
4613 than the other backends, should be considered still a work in
4614 progress; known problems include that the Linux kernel in 64-bit
4615 mode does not propagate the correct sigcontext structure to
4616 userspace, and consequently SBCL on a parisc64 kernel will not
4618 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4619 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4620 suppressed.) Also now that the compiler is looking at declarations
4621 in the environment, it checks optimization declarations as well,
4622 and suppresses inlining when (> DEBUG SPEED).
4623 * More fixes have been made to treatment of floating point exception
4624 treatment and other Unix signals. In particular, floating point
4625 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4626 * The detection and handling of control stack exhaustion (infinite
4627 or very deeply nested recursion) has changed. Stack exhaustion
4628 detection is now done by write-protecting pages at the OS level
4629 and applies at all optimization settings; when found, a
4630 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4631 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4632 be caught using IGNORE-ERRORS.
4633 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4634 correctly when transforming recursive LABELS functions to LETs.
4635 (thanks to Alexey Dejneka)
4636 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4637 that are names of constants or global variables.
4638 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4639 alien routines with docstrings.
4640 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4641 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4643 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4644 (thanks to Eric Marsden)
4645 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4646 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4647 * Bug fix: The SPARC backend can now compile functions involving
4648 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4649 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4650 to a functions expecting a PATHNAME-DESIGNATOR.
4651 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4652 lambda lists. (thanks to Alexey Dejneka)
4653 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4654 functions so that EXPORTing the name of the class doesn't cause
4655 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4656 to Antonio Martinez for reporting this)
4657 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4658 constant-folded without failing an assertion. (thanks to Einar
4659 Floystad Dorum for reporting this)
4660 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4661 types are now dealt with more correctly by the compiler.
4662 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4663 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4664 behaviour analogous to RENAME-FILE. This puts its behaviour more
4665 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4667 * The fasl file version number has changed again. (because of the
4668 bug fix involving the names of PCL MAKE-INSTANCE functions)
4670 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4671 * bug fix: Floating point exceptions are treated much more
4672 consistently on the x86/Linux and PPC/Linux platforms.
4673 * Array initialization with :INITIAL-ELEMENT is now much faster for
4674 cases when the compiler cannot open code the array creation, but
4675 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4676 array accesses have also seen a speed increase.
4677 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4678 specified. (This was at the root of some bad interactions between
4679 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4681 * bug fix: Internal error arguments for undefined functions are now
4682 computed correctly on the PPC/Linux platform.
4683 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4684 Raymond Toy's patch for CMU CL)
4685 * Support for the Solaris 9 operating environment has been included
4686 (thanks to Daniel Merritt)
4687 * A very ugly but hopefully complete draft of the missing FFI chapter
4688 of the manual has been created by reformatting the corresponding
4689 CMU CL manual chapter into (currently very ugly and incoherent)
4690 DocBook and bringing it up to date for SBCL behavior. Thus, the
4691 manual is now essentially complete, at least by my extreme
4692 once-and-only-once standards, whereby it's acceptable to refer to
4693 the doc strings of SB-EXT functions as the primary documentation.
4694 * The fasl file version number has changed again, due to cleanup of
4695 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4696 is no longer a static symbol.)
4698 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4699 * SBCL now builds with OpenMCL (version 0.12) as the
4700 cross-compilation host; also, more progress has been made toward
4701 bootstrapping under CLISP.
4702 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4704 * bug 158 fixed: The compiler can now deal with integer loop
4705 increments different from 1; fixing this turned out also to fix
4707 * bug 169 fixed: no more bogus warnings about using lexical bindings
4708 despite the presence of perfectly good SPECIAL declarations (thanks
4709 to David Lichteblau)
4710 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4711 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4712 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4714 * bug 180 fixed: Method combination specifications no longer ignore
4715 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4716 * bug fix: Structure type predicate functions now check their argument
4717 count as they should.
4718 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4719 correctly. (thanks to Pierre Mai)
4720 * minor incompatible change: The --noprogrammer option is deprecated
4721 in favor of the new --disable-debugger option, which is very similar.
4722 (The major difference is that it takes effect at a slightly different
4723 time at startup, causing handling of errors in --sysinit and
4724 --userinit files will be affected differently.) The
4725 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4726 been added to allow this functionality to be controlled from ordinary
4727 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4728 maintainers, who might want to run non-interactive scripts to
4729 build SBCL cores which will later be used interactively.)
4730 * minor incompatible change: The LOAD function no longer, when given
4731 a wild pathname to load, loads all files matching that pathname.
4732 Instead, an error of type FILE-ERROR is signalled.
4734 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4735 * bug 147 fixed: The compiler preserves its block link/count
4736 invariants more correctly now so that it doesn't crash. (thanks
4738 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4740 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4741 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4742 no-value-for-this-character as NIL (as specified by ANSI).
4743 * HOST-NAMESTRING on physical pathnames now returns a string that is
4744 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4745 (thanks to Christophe Rhodes)
4746 * The Alpha port handles icache flushing more correctly. (thanks to
4748 * More progress has been made toward bootstrapping under CLISP. (thanks
4749 to Christophe Rhodes)
4750 * The fasl file format has changed again, because dynamic loading
4751 on OpenBSD (which has non-ELF object files) motivated some cleanups
4752 in the way that foreign symbols are transformed and passed around.
4753 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4754 is no longer treated as whitespace by the reader, but instead as
4755 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4756 |A
\7fB|, instead of A as it used to.
4758 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4759 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4760 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4761 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4762 this as of 0.7.1.45, but was left out of the previous news section
4763 (thanks to Dan Barlow)
4764 * SBCL now runs on the Solaris operating system on SPARC architectures
4765 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4766 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4767 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4768 * SPARC backend cleanups, allowing builds of cores optimized for V8
4769 and V9 SPARCS, and also emission of code targeted to a particular
4770 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4772 * SBCL is closer to bootstrapping under CLISP, thanks to various
4773 fixes by Christophe Rhodes.
4774 * The fasl file format has changed again, to allow the compiler's
4775 INFO database to support symbol macros.
4776 * The user manual (in doc/) is formatted into HTML more nicely.
4777 (thanks to coreythomas)
4778 * The system is smarter about SUBTYPEP relationships, especially
4779 those involving NOT types (including types such as ATOM which are
4780 represented internally using NOT types). Thus SUBTYPEP is less
4781 likely to return (VALUES NIL NIL) in general, and in particular
4782 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4784 * The fasl file format has changed again, because the internal
4785 representation of types now includes a new slot to support the new
4786 SUBTYPEP-of-NOT-types logic.
4787 * (not a change in the main branch of SBCL, but a related prototype
4788 which can hopefully be merged into the main branch of SBCL in the
4789 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4790 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4791 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4792 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4793 dispatch macro character combinations. (thanks to Alexey Dejneka)
4794 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4795 that superficially look like logical namestrings correctly.
4796 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4798 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4799 default supplied-p) for &optional and &key arguments. (thanks to
4802 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4803 * incompatible change: The compiler is now less aggressive about
4804 tail call optimization, doing it only when (> SPACE DEBUG) or
4805 (> SPEED DEBUG). (This is an incompatible change because there are
4806 programs which relied on the old CMU-CL-style behavior to optimize
4807 away their unbounded recursion which will now die of stack overflow.)
4808 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4809 for non-GENCGC systems has been increased to 20M (since that
4810 seems much closer to the likely performance optimum for modern
4811 systems than the old 4M value was)
4812 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4813 and *DEBUG-PRINT-LEVEL*
4814 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4815 of CMU CL's support for SPARC, and various endianness and other
4816 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4817 * new syntactic sugar for the Unix command line: --load foo.bar is now
4818 an alternate notation for --eval '(load "foo.bar")'.
4820 ** The system now detects stack overflow and handles it gracefully,
4821 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4822 optimization settings. (This is a good thing in general, and
4823 its introduction in this version should be particularly timely
4824 for anyone whose code fails because of suppression of tail
4826 ** The system now hunts for the C variable "environ" in a more
4827 devious way, to avoid segfaults when the C library version differs
4828 between compile time and run time. (thanks to Christophe Rhodes)
4829 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4830 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4831 ** The compiler no longer issues bogus style warnings for undefined
4832 classes in the same source file as the DEFCLASSes which defined
4833 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4835 ** fixes in CONDITION class precedence list for undefined function
4836 errors (thanks to Alexei Dejneka)
4837 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4838 correctly. (thanks to Dan Barlow)
4839 ** portability fixes aiming at bootstrapping under CLISP (thanks
4840 to Dave McDonald and Christophe Rhodes)
4841 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4842 ** fixes in type translation and and type inference (thanks to
4844 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4845 ** various fixes in the new ports (thanks to Dan Barlow)
4846 * several changes related to debugging:
4847 ** suppression of tail recursion, as noted above
4848 ** stack overflow detection, as noted above
4849 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4850 is now the default. (For some time encapsulation has been more
4851 reliable than the breakpoint-based :ENCAPSULATE NIL
4852 implementation, at least on X86 systems; and I just noticed that
4853 encapsulation also seems closer to the spirit of the ANSI
4856 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4858 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4859 up properly again. (There was a packaging bug in 0.7.0 which
4860 left their definitions in SB-SYS::LOAD-FOREIGN and
4861 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4862 vital for most things which interface to C-level interfaces,
4863 like extensions working with sockets or databases or
4864 Perl-compatible regexes or whatever, and the need to fix
4865 this bug is the main reason that 0.7.1 was released so
4867 ** DEFGENERIC is now choosier about the methods it redefines, so that
4868 reLOADing a previously-LOADed file containing DEFGENERICs does
4869 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4870 cycle now works as it should. (thanks to Alexey Dejneka)
4871 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4872 fixed by Christophe Rhodes. (He actually submitted this patch
4873 months ago, and I delayed until after 0.7.0.)
4874 ** Bug 111 (internal compiler confusion about runtime checks on
4875 FUNCTION types) was fixed by Alexey Dejneka.
4876 * Some internal cleanups (getting rid of variables which aren't
4877 needed now that the byte interpreter is gone) caused the fasl
4878 file format number to change again.
4880 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4881 * major incompatible change: The default fasl file extension, i.e. the
4882 default extension for files produced by COMPILE-FILE, has changed
4883 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4885 ** There are many changes in the implementation of the compiler.
4886 SBCL is now essentially a compiler-only implementation of ANSI
4887 Common Lisp. EVAL still "interprets" a few special cases, but
4888 almost all the interesting cases are handled by creating
4889 a LAMBDA expression, calling COMPILE on it, then calling
4890 FUNCALL on the result.
4891 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4892 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4893 Since the code is newer, there might still be some new bugs
4894 (though not as many as before Martin Atzmueller's fixes:-). But
4895 the new code is substantially simpler and clearer, and hopefully
4896 any remaining bugs will be simpler, less fundamental, and more
4897 fixable then the bugs in the old code.
4898 ** The revised compiler is still a little unsteady on its feet.
4900 *** The debugging information it produces (particularly the names
4901 of FUNCTION objects) is sometimes much less useful than what
4902 the old compiler produced.
4903 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4904 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4905 within a MACROLET) has been temporarily weakened.
4906 ** There are new compiler optimizations for various functions:
4907 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4908 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4909 *** the math functions TRUNCATE, FLOOR, and CEILING
4910 *** the function-of-all-trades COERCE
4911 Mostly these should be transparent, but there's one
4912 potentially-annoying problem (bug 117): when the compiler
4913 inline-expands a function and does type analysis on the result,
4914 it can create control paths which have type mismatches, and
4915 when it can't prove that those control paths aren't taken,
4916 it will issue WARNINGs about the type mismatches. This is
4917 a particular problem in practice for the new sequence functions.
4918 It's not clear how this should be fixed, and for now, a
4919 workaround is given in the entry for 117 in the BUGS file.
4920 ** (Because of the interaction between the two previous items --
4921 occasional inlining problems and new inline expansions -- some
4922 of the new sequence function optimizations won't really kick in
4923 completely until debugging information, and then inlining, are
4924 straightened out in some future version.)
4925 * minor incompatible changes:
4926 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4927 DIRECTORY no longer implicitly promotes NIL slots of its
4928 pathname argument to :WILD. In particular, when you ask for the
4929 contents of a directory (which you used to be able to do without
4930 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4931 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4932 ** changes in behavior that ANSI explicitly defines to be
4933 implementation dependent:
4934 *** The new compiler-only implementation still conforms with ANSI,
4935 but acts a little different than before. Besides the obvious
4936 changes in performance tradeoffs (that the cost per form passed
4937 to EVAL has gone up, and the cost per form executed by EVAL
4938 has gone down), the behavior of the system changes a little
4939 because there are no longer any interpreted function objects.
4940 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4941 e.g. doing COMPILE on the output of interactive DEFUN is
4943 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4945 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4946 has changed from (:CL) to NIL.
4947 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4948 e.g. #\Newline and #\Tab, don't have names specified in the
4949 ANSI Common Lisp standard, is now based on their ASCII symbolic
4950 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4951 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4952 are no longer used for output.
4953 ** changes in internal implementation constants:
4954 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4955 4 million. (If your application spends a lot of time GCing and
4956 you have a lot of RAM, you might want to experiment with
4957 increasing it even more.)
4958 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4959 However, almost all old code should still continue to work without
4960 immediate update, as SB-C-CALL is now a (deprecated) nickname
4962 ** Old operator names in the style DEF-FOO are now deprecated in
4963 favor of new corresponding names DEFINE-FOO, for consistency with
4964 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4965 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4966 internal symbols, but a few supported extensions like
4967 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4968 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4969 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4970 etc. as you get deeper into recursive calls to the debugger
4971 command loop, instead of the old "5]", "5]]", "5]]]"
4972 sequence. (I was motivated to do this when squabbles between
4973 ILISP and SBCL left me very deeply nested in the debugger. In the
4974 short term, this change will probably provoke more ILISP/SBCL
4975 squabbles, but hopefully it will be an improvement in the long run.)
4976 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4977 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4978 function, since declaiming return types involving aliens is
4979 (1) annoyingly messy to do by hand and (2) vital to efficient
4980 compilation of code which calls such functions.
4981 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4982 longer reexported by the SB-EXT package. They're solely useful
4983 for alien code, so it seems more logical that you should get
4984 them from the SB-ALIEN package, not in SB-EXT.
4985 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4986 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4987 features. Instead, the code that they used to control is always
4988 built into the system.
4989 * many other bug fixes
4990 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4991 advantage of the new EVAL-WHEN stuff and to clean them up in
4992 general, and they are now more ANSI-compliant in a number of
4993 ways. Martin Atzmueller is responsible for a lot of this.
4994 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4996 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4997 *** correct ERROR type for various file operations
4998 *** some fixes for Lisp streams
4999 *** DEFMETHOD syntax checking
5000 *** changing old weird representation of debug information as
5001 strings (which, among their other deficiencies, don't transform
5002 correctly when you rename packages, and don't change their
5003 print representation when you change things like *PACKAGE*
5004 and *PRINT-LENGTH*) to symbols and lists of symbols
5005 He also made several improvements and fixed several bugs in DESCRIBE.
5006 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5008 *** misbehavior of WRITE-STRING/WRITE-LINE
5009 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5010 and several other LOOP problems as well
5011 *** DIRECTORY when similar filenames are present
5012 *** DEFGENERIC with :METHOD options
5013 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5014 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5015 *** argument ordering in FIND with :TEST option
5016 *** mishandled package designator argument in APROPOS-LIST
5017 *** various problems in the backquote readmacro
5018 *** a bug in APROPOS
5019 *** probably some others that I'm not describing very well here,
5020 since the CVS log documents them by reference to sbcl-devel
5021 messages, and the SourceForge archives aren't working well.:-(
5022 ** Dan Barlow improved the Alpha port (and is making progress on the
5023 PPC port, for those of you who think different).
5024 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5025 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5026 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5027 continues to work on the SPARC port (for those of you in a position
5028 to look down upon our little PC-compatible boxes from a great height).
5029 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5030 and uses that copy, rather than the current dynamic value, when
5031 it's trying to decide whether to truncate output. Thus e.g.
5032 (let ((*print-lines* 50))
5033 (pprint-logical-block (stream nil)
5035 (let ((*print-lines* 8))
5036 (print (aref possiblybigthings i) stream)))))
5037 should now truncate the logical block only at 50 lines, instead of
5038 often truncating it at 8 lines, as it did before.
5039 * The doc/cmucl/ directory, containing old CMU CL documentation
5040 from the time of the fork, is no longer part of the base system.
5041 SourceForge has shut down its anonymous FTP service, and with it
5042 my original plan for distributing the old CMU CL documentation
5043 there. For now, if you need these files you can download an old
5044 SBCL source release and extract them from it.
5045 * The fasl file version number changed again, for dozens of reasons,
5046 some of which are apparent above.
5048 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5049 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5050 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5051 patch, so that DISASSEMBLE output is much nicer.
5052 * The code in the SB-PROFILE package now seems reasonably stable.
5053 I still haven't decided what the final interface should look like
5054 (I'd like PROFILE to interact cleanly with TRACE, since both
5055 facilities use function encapsulation) but if you have a need
5056 for profiling now, you can probably use it successfully with
5057 the current CMU-CL-style interface.
5058 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5059 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5060 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5061 link now returns the dangling link itself, and for similar
5062 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5063 link itself. (In these cases the old code signalled an error and
5064 looped endlessly, respectively.) Thus, DIRECTORY now works even
5065 in the presence of dangling and cyclic symbolic links.
5066 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5067 is now a supported extension again, since the consensus on
5068 sbcl-devel was that it can be useful for ordinary development
5069 work, not just for debugging SBCL itself.
5070 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5071 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5072 that currently-defined functions might be redefined later with
5073 different return types.
5074 * Hash tables can be printed readably, as inspired by CMU CL code
5075 of Eric Marsden and SBCL code of Martin Atzmueller.
5076 * better error handling in CLOS method combination, thanks to
5077 Martin Atzmueller porting Pierre Mai's CMU CL patches
5078 * more overflow fixes for >16Mbyte I/O buffers
5079 * A bug in READ has been fixed, so that now a single Ctrl-D
5080 character suffices to cause end-of-file on character streams.
5081 In particular, now you only need one Ctrl-D at the command
5082 line (not two) to exit SBCL.
5083 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5085 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5086 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5087 does the right thing.
5088 * The implementation of some type tests, especially for CONDITION
5089 types, is now tidier and maybe faster, due to CMU CL code
5090 originally by Douglas Crosher, ported by Martin Atzmueller.
5091 * Some math functions have been fixed, and there are new
5092 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5093 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5094 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5095 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5096 likely to be built into sbcl-0.7.0.)
5097 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5098 CL, ported to SBCL by Martin Atzmueller)
5099 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5100 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5101 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5102 * There's a new slam.sh hack to shorten the edit/compile/debug
5103 cycle for low-level changes to SBCL itself, and a new
5104 :SB-AFTER-XC-CORE target feature to control the generation of
5105 the after-xc.core file needed by slam.sh.
5106 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5107 COMPILE-FILE is no longer supported, so that now every function
5108 gets an entry point, so that block compilation looks a little
5109 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5110 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5111 returns the number of bytes consed since the system started,
5112 rather than the number consed since the first time the function
5113 was called. (The new definition parallels ANSI functions like
5114 CL:GET-INTERNAL-RUN-TIME.)
5115 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5116 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5117 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5118 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5119 * Fasl file version numbers are now independent of the target CPU,
5120 since historically most system changes which required version
5121 number changes have affected all CPUs equally. Similarly,
5122 the byte fasl file version is now equal to the ordinary
5125 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5126 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5127 is no longer recognized. I apologize for this, because it was
5128 listed in SB-EXT as a supported extension, but I found that
5129 its existing behavior was poorly specified, as well as incorrectly
5130 specified, and it looked like too much of a mess to straighten it
5131 out. I have enough on my hands trying to get ANSI stuff to work..
5132 * many patches ported from CMU CL by Martin Atzmueller, with
5133 half a dozen bug fixes in pretty-printing and the debugger, and
5134 half a dozen others elsewhere
5135 * fixed bug 13: Floating point infinities are now supported again.
5136 They might still be a little bit flaky, but thanks to bug reports
5137 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5138 as flaky as they were.
5139 * The --noprogrammer command line option is now supported. (Its
5140 behavior is slightly different in detail from what the old man
5141 page claimed it would do, but it's still appropriate under the
5142 same circumstances that the man page talks about.)
5143 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5144 are now supported, and enabled by default. Thus, the compiler can
5145 handle many floating point and complex operations much less
5146 inefficiently. (Thus e.g. you can implement a complex FFT
5148 * The compiler now detects type mismatches between DECLAIM FTYPE
5149 and DEFUN better, and implements CHECK-TYPE more correctly, and
5150 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5151 thanks to patches from Martin Atzmueller.
5152 * various fixes to make the cross-compiler more portable to
5153 ANSI-conforming-but-different cross-compilation hosts (notably
5154 Lispworks for Windows, following bug reports from Arthur Lemmens)
5155 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5156 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5157 fixed thanks to Pierre Mai's CMU CL patches.
5158 * fixes to keep the system from overflowing internal counters when
5159 it tries to use i/o buffers larger than 16M bytes
5160 * fixed bug 45a: Various internal functions required to support
5161 complex special functions have been merged from CMU CL sources.
5162 (When I was first setting up SBCL, I misunderstood a compile-time
5163 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5164 * improved support for type intersection and union, fixing bug 12
5165 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5166 more obscure bugs as well
5167 * some steps toward byte-compiling non-performance-critical
5168 parts of the system, courtesy of patches from Martin Atzmueller
5169 * Christophe Rhodes has made some debian packages of sbcl at
5170 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5171 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5172 stable, but are nonetheless usable. When he's ready, I'd be happy
5173 to add them to the SourceForge "File Releases" section. (And if
5174 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5175 * new fasl file format version number (because of changes in
5176 internal representation of (OR ..) types to accommodate the new
5177 support for (AND ..) types, among other things)
5179 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5180 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5182 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5184 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5185 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5186 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5187 * DESCRIBE now works on structure objects again.
5188 * Most function call argument type mismatches are now handled as
5189 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5190 know whether the function will be redefined before the call is
5191 executed. (The compiler could flag local calls with full WARNINGs,
5192 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5193 it doesn't keep track of enough information to know whether calls
5194 are local in this sense.)
5195 * Compiler output is now more verbose, with messages truncated
5196 later than before. (There should be some supported way for users
5197 to override the default verbosity, but I haven't decided how to
5198 provide it yet, so this behavior is still controlled by the internal
5199 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5200 src/compiler/ir1util.lisp.)
5201 * Fasl file format version numbers have increased again, because
5202 support for the Gray streams extension changes the layout of the
5203 system's STREAM objects.
5204 * The Gray subclassable streams extension now works, thanks to a
5205 patch from Martin Atzmueller.
5206 * The full LOAD-FOREIGN extension (not just the primitive
5207 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5208 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5209 but like most other programs, it defaults to copying the Unix
5210 environment from the original process instead of starting the
5211 new process in an empty environment.
5212 * Extensions which manipulate the Unix environment now support
5213 an :ENVIRONMENT keyword option which doesn't smash case or
5214 do other bad things. The CMU-CL-style :ENV option is retained
5215 for porting convenience.
5216 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5217 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5219 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5221 * A patch from Martin Atzmueller seems to have solved the SIGINT
5222 problem, and as far as we know, signal-handling now works cleanly.
5223 (If you find any new bugs, please report them!)
5224 * The system no longer defaults Lisp source file names to types
5225 ".l", ".cl", or ".lsp", but only to ".lisp".
5226 * The compiler no longer uses special default file extensions for
5227 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5228 seems to expect a single default extension for all compiled code,
5229 and there's no compelling reason to try to stretch the standard
5230 to allow two different extensions.) Instead, byte-compiled files
5231 default to the same extension as native-compiled files.
5232 * Fasl file format version numbers have increased again, because
5233 a rearrangement of internal implementation packages made some
5234 dumped symbols in old fasl files unreadable in new cores.
5235 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5236 many fewer weird special cases.
5237 * Bug #17 (differing COMPILE-FILE behavior between logical and
5238 physical pathnames) has been fixed, and some related misbehavior too,
5239 thanks to a patch from Martin Atzmueller.
5240 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5241 by Tim Moore, ported to SBCL by Martin Atzmueller.
5242 * Martin Atzmueller fixed several filesystem-related problems,
5243 including bug #36, in part by porting CMU CL patches, which were
5244 written in part by Paul Werkowski.
5245 * More compiler warnings in src/runtime/ are gone, thanks to
5246 more patches from Martin Atzmueller.
5247 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5250 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5252 * DESCRIBE now works on CONDITION objects.
5253 * The debugger now handles errors which arise when trying to print
5254 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5256 * The build system now uses an additional file, customize-target-features.lisp,
5257 to allow local modifications to the target *FEATURES* list. (The point of
5258 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5259 debugging features enabled, without having to worry about propagating it
5260 into everyone's system when I do a "cvs update".) When no
5261 customize-target-features.lisp file exists, the target *FEATURES* list
5262 should be constructed the same way as before.
5263 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5264 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5265 warn about behavior which is undefined under the ANSI spec. Note: This
5266 is specified by ANSI, but it's not very popular with programmers.
5267 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5268 macro in the SBCL sources for an example of a workaround which you
5269 might use to make portable ANSI-standard code which does what you want.
5270 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5271 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5272 when it's used as a non-toplevel form. (This is required in order
5273 to implement the DEFCONSTANT-EQX macro.)
5274 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5275 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5276 funny things, due to bugs in the implementation of EVAL-WHEN
5277 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5278 non-toplevel DEFCONSTANTs are uncommon.)
5279 * The core file version number and fasl file version number have been
5280 incremented, because the old noncompliant DEFCONSTANT behavior involved
5281 calling functions which no longer exist, and because I also took the
5282 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5283 * fixed bug 1 (error handling before read-eval-print loop starts), and
5284 redid debugger restarts and related debugger commands somewhat while
5286 ** The QUIT debugger command is gone, since it did something
5287 rather different than the SB-EXT:QUIT command, and since it never
5288 worked properly outside the main toplevel read/eval/print loop.
5289 Invoking the new TOPLEVEL restart provides the same functionality.
5290 ** The GO debugger command is also gone, since you can just invoke
5291 the CONTINUE restart directly instead.
5292 ** The TOP debugger command is also gone, since it's redundant with the
5293 FRAME 0 command, and since it interfered with abbreviations for the
5295 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5297 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5298 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5299 some porting work by Martin Atzmueller)
5300 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5301 with a boatload of patches which he ported to SBCL. Now that those
5303 ** The system tries to make sure that its low-priority messages
5304 are prefixed by semicolons, to help people who like to use
5305 syntax highlighting in their ILISP buffer. (This patch
5306 was originally due to Raymond Toy.)
5307 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5308 patches originally written by Raymond Toy.
5309 ** The compiler understands coercion between single-value and
5310 multiple-VALUES type expressions better, getting rid of some very
5311 weird behavior, thanks to patches originally by Robert MacLachlan
5312 and Douglas Crosher.
5313 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5314 lambda lists, thanks to a patch originally by Pierre Mai.
5315 ** The system no longer bogusly warns about "abbreviated type
5317 ** The compiler gets less confused by inlining and RETURN-FROM,
5318 thanks to some patches originally by Tim Moore.
5319 ** The system no longer hangs when dumping circular lists to fasl
5320 files, thanks to a patch originally from Douglas Crosher.
5321 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5322 undefined function error.
5323 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5324 in structure slot initforms) for now, documented workaround instead:-|
5325 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5326 * fixed bug 5: added stubs for various Gray stream functions called
5327 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5328 installed, at least appropriate type errors are generated
5329 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5330 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5331 consistently in DEFMETHOD forms.
5332 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5333 it doesn't seem to affect SBCL after all
5334 * The C runtime system now builds with better optimization and many
5335 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5337 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5339 * The system is now under CVS at SourceForge (instead of the
5340 CVS repository on my home machine).
5341 * The new signal handling code has been tweaked to treat register
5342 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5343 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5344 downstream, e.g. in debug-int.lisp, has implicit dependencies
5345 on the unsignedness of integer representation of machine words,
5346 and that caused the system to bomb out with infinite regress
5347 when trying to recover from type errors involving signed values,
5348 e.g. (BUTLAST '(1 2 3) -1).)
5349 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5350 (This was one of the bugs Peter Van Eynde reported back in July.)
5351 * The system now uses code inspired by Colin Walters' O(N)
5352 implementation of MAP (from the cmucl-imp@cons.org mailing
5353 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5354 inline the MAP operation, and there is more than one
5355 sequence argument to the MAP call (so that it can't just
5356 do ETYPECASE once and for all based on the type of the
5357 single sequence argument). (The old non-inline implementation
5358 of the general M-argument sequence-of-length-N case required
5359 O(M*N*N) time when any of the sequence arguments were LISTs.)
5360 * The QUIT :UNIX-CODE keyword argument has been renamed to
5361 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5362 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5364 * Raymond Wiker's patches to port dynamic loading from Linux to
5365 FreeBSD have been added.
5366 * The BUGS file is now more nearly up to date, thanks in large part
5367 to Martin Atzmueller's review of it.
5368 * The debugger now flushes standard output streams before it begins
5369 its output ("debugger invoked" and so forth).
5370 * The core version number and fasl file version number have both
5371 been incremented, because of incompatible changes in the layout
5373 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5374 used to not be called for a saved Lisp image.)
5375 * Martin Atzmueller's version of a patch to fix a compiler crash,
5376 as posted on sbcl-devel 13 September 2000, has been installed.
5377 * Instead of installing Martin Atzmueller's patch for the
5378 compiler transform for SUBSEQ, I deleted the compiler transform,
5379 and transforms for some similar consing operations.
5380 * A bug in signal handling which kept TRACE from working on OpenBSD
5382 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5383 away by constant folding
5384 * The system now defines its address space constants in one place
5385 (in the Lisp sources), and propagates them automatically elsewhere
5386 (through GENESIS and the sbcl.h file). Therefore, patching the
5387 address map is less unnecessarily tedious and error-prone. The
5388 Lisp names of address space constants have also been systematized.
5389 * CVS tags like dollar-Header-dollar have been removed from
5390 the sources, because they have never saved me trouble and
5391 they've been source of trouble working with patches and other
5392 diff-related operations.
5393 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5394 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5396 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5398 * The system has been ported to OpenBSD.
5399 * The system now compiles with a simple "sh make.sh" on the systems
5400 that it's supported on. I.e., now you no longer need to tweak
5401 text in the target-features.lisp-expr and symlinks in src/runtime/
5402 by hand, the make.sh takes care of it for you.
5403 * The system is no longer so grossly inefficient when compiling code
5404 involving vectors implemented as general (not simple) vectors (VECTOR T),
5405 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5406 which dares to use the various sequence functions on non-simple
5407 vectors, takes less of a performance hit.
5408 * There is now a primitive type predicate VECTOR-T-P
5409 to test for the (VECTOR T) type, so that e.g.
5410 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5411 can now be compiled with some semblance of efficiency. (The old code
5412 turned the type declaration into a full call to %TYPEP at runtime!)
5413 * AREF on (VECTOR T) is still not fast, since it's still compiled
5414 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5415 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5416 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5417 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5418 without making full calls to SUBTYPEP at runtime.
5419 (Some analogous efficiency issues for non-simple vectors specialized to
5420 element types other than T, or for non-simple multidimensional arrays,
5421 have not been addressed. They could almost certainly be handled the
5422 same way if anyone is motivated to do so.)
5423 * The changes in array handling break binary compatibility, so
5424 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5425 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5426 instead of (VALUES T T).
5427 * By following the instructions that Dan Barlow posted to sbcl-devel
5428 on 2 July 2000, I was able to enable primitive dynamic object
5429 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5430 functionality is not implemented (since it calls ld to resolve
5431 library references automatically, requiring RUN-PROGRAM for its
5432 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5433 try to resolve library references) is now supported.
5434 * The system now flushes the standard output streams when it terminates,
5435 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5436 them at several other probably-convenient times, e.g. in each pass of
5437 the toplevel read-eval-print loop, and after evaluating a form given
5438 as an "--eval" command-line option. (These changes were motivated by a
5439 discussion of stream flushing issues on cmucl-imp in August 2000.)
5440 * The source transform for TYPEP of array types no longer assumes
5441 that an array whose element type is a not-yet-defined type
5442 is implemented as an array of T, but instead punts, so that the
5443 type will be interpreted at runtime.
5444 * There is now some support for cross-compiling in make.sh: each of
5445 the phases of make.sh has its own script. (This should be transparent
5446 to people doing ordinary, non-cross-compile builds.)
5447 * Since my laptop doesn't have hundreds of megabytes of memory like
5448 my desktop machine, I became more motivated to do some items on
5449 my to-do list in order to reduce the size of the system a little:
5450 ** Arrange for various needed-only-at-cold-init things to be
5451 uninterned after cold init. To support this, those things have
5452 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5453 symbols with such names are now uninterned after cold init).
5454 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5455 fasl files for cold load.
5456 ** Remove the old compiler structure pooling code (which used to
5457 be conditional on the target feature :SB-ALLOC) completely.
5458 ** Redo the representation of some data in cold init to be more compact.
5459 (I also looked into supporting byte compiled code at bootstrap time,
5460 which would probably reduce the size of the system a lot, but that
5461 looked too complicated, so I punted for now.)
5462 * The maximum signal nesting depth in the src/runtime/ support code has
5463 been reduced from 4096 to 256. (I don't know any reason for the very
5464 large old value. If the new smaller value turns out to break something,
5465 I'll probably just bump it back up.)
5466 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5468 * Many, many bugs reported by Peter Van Eynde have been added to
5469 the BUGS list; some have even been fixed.
5470 * While enabling dynamic object file loading, I tried to make the
5471 code easier to understand, renaming various functions and variables
5472 with less ambiguous names, and changing some function calling
5473 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5474 * While trying to figure out how to do the OpenBSD port, I tried to
5475 clean up some of the code in src/runtime/. In particular, I dropped
5476 support for non-POSIX signal handling, added various comments,
5477 tweaked the code to reduce the number of compilation warnings, and
5478 renamed some files to increase consistency.
5479 * To support the new automatic configuration functionality in make.sh,
5480 the source file target-features.lisp-expr has been replaced with the
5481 source file base-target-features.lisp-expr and the machine-generated
5482 file local-target-features.lisp-expr.
5483 * fixed a stupid quoting error in make.sh so that using CMU CL
5484 "lisp -batch" as cross-compilation host works again
5486 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5488 * DESCRIBE no longer tries to call itself recursively to describe
5489 bound/fbound values, so that it no longer fails on symbols which are
5490 bound to themselves (like keywords, T, and NIL).
5491 * DESCRIBE now works on generic functions.
5492 * The printer now prints less-screwed-up representations of closures
5493 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5494 * A private symbol is used instead of the :EMPTY keyword previously
5495 used to mark empty slots in hash tables. Thus
5496 (DEFVAR *HT* (MAKE-HASH-TABLE))
5497 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5498 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5499 now does what ANSI says that it should. (You can still get
5500 similar noncompliant behavior if bang on the hash table
5501 implementation with all the symbols you get back from
5502 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5503 This breaks binary compatibility, since tests for equality to
5504 :EMPTY are wired into things like the macroexpansion of
5505 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5507 * There's now a minimal placeholder implementation for CL:STEP,
5508 as required by ANSI.
5509 * An obscure bug in the interaction of the normal compiler, the byte
5510 compiler, inlining, and structure predicates has been patched
5511 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5512 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5514 * Missing ordinary arguments in a macro call are now detected even
5515 when the macro lambda list contains &KEY or &REST.
5516 * The debugger no longer complains about encountering the top of the
5517 stack when you type "FRAME 0" to explicitly instruct it to go to
5518 the top of the stack. And it now prints the frame you request even
5519 if it's the current frame (instead of saying "You are here.").
5520 * As specified by ANSI, the system now always prints keywords
5521 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5523 * The default initial SIZE of HASH-TABLEs is now smaller.
5524 * Type information from CLOS class dispatch is now propagated
5525 into DEFMETHOD bodies, so that e.g.
5526 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5528 is now basically equivalent to
5529 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5530 (DECLARE (TYPE SINGLE-FLOAT X))
5532 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5533 operation, without having to do run-time type dispatch.
5534 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5535 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5536 * Since I don't seem to be making big file reorganizations very often
5537 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5538 is overflowing my ability to conveniently back them up), I've finally
5539 checked the system into CVS. (The CVS repository is on my home system,
5540 not at SourceForge -- putting it on SourceForge might come later.)
5541 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5542 high-level GC-NOTIFY-FOO functions send their output. (There's
5543 still very little control of where low-level verbose GC functions
5544 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5545 less than it used to -- the GC-NOTIFY-FOO functions are now under
5546 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5547 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5548 in only one place in the source code, and propagates it automatically
5549 everywhere that it's needed. Thus e.g. when I bump the version from
5550 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5551 * The C source files now include boilerplate legalese and documentation
5552 at the head of each file (just as the Lisp source files already did).
5553 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5554 to his page will be replaced with a link to his new CLiki service.
5556 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5558 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5559 * The build process now looks for GNU make under the default name "gmake",
5560 instead of "make" as it used to. If GNU make is not available as "gmake"
5561 on your system, you can change this default behavior by setting the
5562 GNUMAKE environment variable.
5563 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5564 can build without error under CMU CL.
5566 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5568 * There is now a partial SBCL user manual (with some new text and some
5569 text cribbed from the CMU CL manual).
5570 * The beginnings of a profiler have been added (starting with the
5571 CMU CL profiler and simplifying and cleaning up). Eventually the
5572 main interface should be through the TRACE macro, but for now,
5573 it's still accessed through vaguely CMU-CL-style functions and macros
5574 exported from the package SB-PROFILE.
5575 * Some problems left over from porting CMU CL to the new
5576 cross-compilation bootstrap process have been cleaned up:
5577 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5578 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5579 part when getting rid of the compiler *BACKEND* stuff.)
5580 ** The value of *NULL-TYPE* was screwed up, because it was
5581 being initialized before the type system knew the final
5582 definition of the 'NULL type. This screwed up several key
5583 optimizations in the compiler, causing inefficiency in all sorts
5584 of places. (I found it because I wanted to understand why
5585 GET-INTERNAL-RUN-TIME was consing.)
5586 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5587 PROCLAIM FTYPE information. Unfortunately this broke binary
5588 compatibility again, since now the forms output by DEFGENERIC
5589 to refer to functions which didn't exist in 0.6.3.
5590 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5591 can use the new (as of 0.6.3) transform for SOME into MAP into
5593 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5594 values to (INTEGER 0 1000000), so that the time code will no longer
5595 occasionally get blown up by Linux returning 1000000 microseconds
5596 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5597 its output conform to the ANSI spec. (Alas, this makes its output
5598 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5599 * A full call to MAP NIL with a single sequence argument no longer conses.
5600 * fixes to problems pointed out by Martin Atzmueller:
5601 * The manual page no longer talks about multiprocessing as though
5602 it were currently supported.
5603 * The ILISP support patches have been removed from the distribution,
5604 because as of version 5.10.1, ILISP now supports SBCL without us
5605 having to maintain patches.
5606 * added a modified version of Raymond Toy's recent CMU CL patch for
5607 EQUALP comparison of HASH-TABLE
5609 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5611 * The system still can't cross-compile itself with
5612 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5613 entails), but at least it can compile more of itself that way
5614 than it used to be able to, and various buglets which were uncovered
5615 by trying to cross-compile itself that way have now been fixed.
5616 * This release breaks binary compatibility again. This time
5617 at least I've incremented the FASL file format version to 2, so that the
5618 problem can be detected reliably instead of just causing weird errors.
5619 * various new style warnings:
5620 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5621 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5622 ** using the lexical binding of a variable named in the *FOO* style
5623 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5624 as specified by ANSI.
5625 * *RANDOM-STATE* is no longer automatically initialized from
5626 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5627 default behavior of the system is to repeat its behavior every time
5628 it's run. If you'd like to change this behavior, you can always
5629 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5630 old convention there was no comparably easy way to get the system to
5631 repeat its behavior every time it was run.
5632 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5633 FTYPE declarations has been removed, in favor of their ANSI
5634 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5635 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5636 the types of their sequence arguments can be determined at compile time.
5637 This is done through a new open code expansion for MAP which eliminates
5638 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5639 argument types can be determined at compile time.
5640 * The optimizer now transforms COERCE into an identity operation when it
5641 can prove that the coerced object is already of the correct type. (This
5642 can be a win for machine generated code, including the output of other
5643 optimization transforms, such as the MAP transform above.)
5644 * Credit information has been moved from source file headers into CREDITS.
5645 * Source file headers have been made more standard.
5646 * The CASE macro now compiles without complaining even when it has
5649 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5651 * (Note that the way that the PCL macroexpansions were rewritten
5652 to accommodate the change in DEFGENERIC below breaks binary
5653 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5654 not run under sbcl-0.6.2. Once we get out of alpha releases,
5655 i.e. hit release 1.0.0, we'll probably try to maintain binary
5656 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5657 and sbcl-1.4.4. Until then, however, it might be fairly common
5658 for maintenance releases to break binary compatibility.)
5659 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5661 * The reporting of unhandled signals has been changed to print some
5662 explanatory text as well as the report form. (Previously only
5663 the report form was printed.)
5664 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5665 it defines, so that the compiler no longer issues undefined function
5666 warnings for compiled-but-not-yet-loaded generic functions.
5667 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5668 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5669 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5670 section of the ANSI spec are supported.
5671 * The "" nickname for the "KEYWORD" package has been removed.
5672 The reader still handles symbol tokens which begin with a package marker
5673 as keywords, but it doesn't expose its mechanism for doing so in the
5674 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5675 * The system now issues STYLE-WARNINGs for contradictory TYPE
5676 proclamations. (Warnings for contradictory FTYPE proclamations would
5677 be nice too, but those can't be done usefully unless the type system
5678 is made smarter about FUNCTION types.)
5679 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5680 systematized, so that "*target-*.lisp is supposed to exist only on the
5681 target and imply that there's a related file which exists on the
5682 host, and *host-*.lisp is supposed to exist only on the host and imply
5683 that there's a related file which exists on the target. This involves a
5684 lot of renaming. Hopefully the acute confusion caused by the renaming
5685 will be justified by the reduction in chronic confusion..
5686 ** runtime-type.lisp -> early-target-type.lisp
5687 ** target-type.lisp -> late-target-type.lisp
5688 ** early-host-format.lisp -> early-format.lisp
5689 ** late-host-format.lisp -> late-format.lisp
5690 ** host-error.lisp -> misc-error.lisp
5691 ** early-error.lisp -> early-target-error.lisp
5692 ** late-error.lisp -> late-target-error.lisp
5693 ** host-defboot.lisp -> early-defboot.lisp
5694 ** code/misc.lisp -> code/target-misc.lisp
5695 ** code/host-misc.lisp -> code/misc.lisp
5696 ** code/numbers.lisp -> code/target-numbers.lisp
5697 ** code/early-numbers.lisp -> numbers.lisp
5698 ** early-host-type.lisp -> early-type.lisp
5699 ** late-host-type.lisp -> late-type.lisp
5700 ** host-typep.lisp -> typep.lisp
5701 ** load.lisp -> target-load.lisp
5702 ** host-load.lisp -> load.lisp
5703 ** host-disassem.lisp -> disassem.lisp
5704 ** host-insts.lisp -> insts.lisp
5705 ** byte-comp.lisp -> target-byte-comp.lisp
5706 ** host-byte-comp.lisp -> byte-comp.lisp
5707 ** host-signal.lisp -> signal.lisp
5708 ** host-defstruct.lisp -> defstruct.lisp
5709 ** late-target-type.lisp -> deftypes-for-target.lisp
5710 Furthermore, several other previously target-only files foo.lisp (e.g.
5711 hash-table.lisp and random.lisp) have been split into a target-and-host
5712 foo.lisp file and a target-only target-foo.lisp file, with their key type
5713 definitions in the target-and-host part, so that the cross-compiler will
5714 know more about target types.
5715 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5716 gone away. In their place are various *BACKEND-FOO* variables
5717 corresponding to the slots of the old structure.
5718 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5719 into the target SBCL has been fixed.
5720 * The chill.lisp system for loading cold code into a running SBCL
5722 * Support for the CMU CL "scavenger hook" extension has been removed.
5723 (It was undocumented and unused in the CMU CL sources that SBCL was
5724 derived from, and stale in sbcl-0.6.1.)
5725 * Various errors in the cross-compiler type system were detected
5726 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5727 (enabling various consistency checks). Many of them were fixed,
5728 but some hard problems remain, so the compiler is back to
5729 running without *TYPE-SYSTEM-INITIALIZED* for now.
5730 * As part of the cross-compiler type system cleanup, I implemented
5731 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5732 * I have started adding UNCROSS calls throughout the type system
5733 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5734 on cross-compiler input files will be able to go away, and various
5736 * CONSTANTP now returns true for quoted forms (as explicitly required
5739 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5741 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5742 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5743 (MAKE-LIST -1). In the longer term, it ought to become true
5744 that declarations are assertions even at SAFETY 1. For now, it's not
5745 quite true even at SAFETY 3, but it's at least more nearly true..
5746 (Note that this change seems to increases the size of the system by
5747 O(5%) and to decrease the speed of the compiler by 20% or more.)
5748 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5749 for the problem of printing dozens of lines of distracting information
5750 about low-level system machinery as part of the top stack frame
5751 on entry to the debugger when an undefined function was called.
5752 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5753 is not reset to COMMON-LISP-USER.
5754 * Compilation of stuff related to dyncount.lisp has been made conditional
5755 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5756 smaller. The various dyncount-related symbols have been moved into
5757 a new "SB-DYNCOUNT" package.
5758 * tty-inspect.lisp has been renamed to inspect.lisp.
5759 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5760 feature has gone away. (When we eventually port to other flavors of
5761 libc and/or Unix, we'll try to make the differences between flavors
5762 invisible at the user level.)
5763 * Various other *FEATURES* tags, and/or their associated conditionals,
5764 have been removed if obsolescent, or given better documentation, or
5765 sometimes given more-mnemonic names.
5767 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5769 * tidied up "make.sh" script
5770 * tidied up system directory structure
5771 * better "clean.sh" behavior
5772 * added doc/FOR-CMUCL-DEVELOPERS
5773 * many many small tweaks to output format, e.g. removing possibly-confusing
5774 trailing #\. character in DESCRIBE-INSTANCE
5775 * (EQUALP #\A 'A) no longer signals an error.
5776 * new hashing code, including EQUALP hashing
5777 * tidied up Lisp initialization and toplevel
5778 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5779 * command line argument processing
5780 * added POSIX-GETENV function to deal with Unix-ish environment variables
5781 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5782 terminating SBCL on EOF
5783 * non-verbose GC by default
5784 * There is no more "sbcl" shell script; the sbcl file is now the C
5785 runtime executable (just like CMU CL).
5786 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5788 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5789 symbol and package information as Lisp native symbol and package objects
5790 instead of strings naming symbols and strings naming packages. This way,
5791 whenever packages are renamed (as in warm init), debug information is
5792 transformed along with everything else.
5793 * tweaked the optimization policy declarations which control the building
5794 of SBCL itself. Now, among other things, the system no longer saves
5795 source location debugging information. (This helps two problems at once
5796 by reducing SBCL size and by keeping SBCL from trying to look for its
5797 sources -- which may not exist -- when reporting errors.)
5798 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5799 debugging and testing purposes
5800 * cleaned up printing, making the printer call PRINT-OBJECT for
5801 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5802 methods, giving nearly-ANSI behavior
5803 * converted almost all special variables to use *FOO* naming convention
5804 * deleted PARSE-TIME functionality, since it can be done portably
5805 * moved some files out of cold init into warm init
5806 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5808 * regularized formatting of source files
5809 * added an install.sh script
5810 * fixed ridiculous memory usage of cross-compiler by making
5811 compiler/alloc.lisp not try to do pooling unless it can hook
5812 itself into the GC of the cross-compilation host. Now the system
5813 builds nicely on my old laptop.
5814 * added :SB-ALLOC in target-features.lisp-expr
5815 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5816 was not implemented)
5817 * re-did condition handling and note reporting in the compiler. Notes
5818 are no longer handled by signalling conditions. Style warnings
5819 and warnings are handled more correctly and reported in such a way
5820 that it's easy to find one or the other in your output (so that you
5821 can e.g. figure out which of many problems caused COMPILE-FILE to
5823 * changed the severity of several compiler warnings from full WARNING
5824 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5825 compiler note reporting so that it doesn't use the condition system
5826 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5827 COMPILE-FILE command)
5828 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5829 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5830 no longer supported, since their implementation was deeply intertwingled
5831 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5832 * removed bogus "support" for compiler macros named (SETF FOO), and
5833 removed the compiler macro for SETF INFO (but only after making a fool
5834 of myself on the cmucl-imp mailing list by posting a bogus patch for
5835 DEFINE-COMPILER-MACRO..)
5836 * Compiled files containing forms which have side effects on the Lisp
5837 reader (such as DEFPACKAGE forms) are now handled more correctly.
5838 (Compiler queuing of top level lambdas has been suppressed by setting
5839 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5840 * deleted various currently-unused source files, e.g. gengc.lisp. They
5841 may be added back at some point e.g. when porting to other architectures,
5842 but until they are it's distracting to distribute them and to try to
5844 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5845 there were so many of them they're just distractions, and UNCROSS is
5846 known to be able to handle the current sources
5847 * moved PROFILE functionality into TRACE, so that it will be clear
5848 how the wrapping and unwrapping of functions when you profile them
5849 interacts with the wrapping and unwrapping of functions when you
5850 trace them. (Actually, the functionality isn't there yet, but at least
5851 the interface specification is there. Hopefully, the functionality will
5852 arrive with some future maintenance release.)
5853 * removed host-oops.lisp
5854 * changed signature of QUIT function to allow UNIX-CODE argument
5855 * fixed READ-SEQUENCE bug
5856 * tweaked verbose GC output so that it looks more like the progress
5857 output that ANSI specifies for functions like LOAD
5858 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5859 * added <http://sbcl.sourceforge.com> to the banner information printed by