1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.41
4 ** Cross-compilation host is now specified to make.sh using
5 command-line argument --xc-host=<command> instead of a positional
6 argument. (thanks to Daniel Herring)
7 ** Install location can be specified to make.sh using command-line
8 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
9 * optimization: The default implementation of
10 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
11 * enhancement: Explicit memory barrier operations are now available for use
12 by multithreaded code. See documentation for details.
13 * enhancement: Experimental support for threading on Linux/PPC.
14 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
15 * bug fix: EXPT signals an error if first argument is a zero and second
16 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
17 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
18 (lp#576594, thanks to Roman Marynchak)
20 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
21 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
22 cached, leading to many fewer expensive calls to
23 COMPUTE-APPLICABLE-METHODS.
24 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
25 CLASS argument, search for and call an appropriate optimized ctor function
27 * bug fix: WRITE always returns the correct value.
29 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
30 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
31 * bug fix: Name conflicts between symbols passed as arguments to a single
32 call to IMPORT no longer add multiple symbols with the same name to the
33 package (detectable via DO-SYMBOLS).
34 * bug fix: support building without the dlshim on darwin x86 and x86-64
36 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
38 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
39 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
41 * bug fix: linkage-table entries on PPC now no longer overflow their
42 space allocation (potentially causing crashes if they are written out
44 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
45 platforms, preventing the GC from seeing stale pointers on the control
46 stack in subsequent GCs (which would, and does, break invariants).
47 * bug fix: 32-bit unicode external formats now work on big-endian systems.
48 * bug fix: Literal characters with code points greater than about 32767
49 now work on PPC UNICODE builds.
50 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
51 high order bits are explicitly cleared out. In some contrived situations,
52 this could lead to wrong results in mixed real/complex float arithmetic.
53 * bug fix: Fix function/macro redefinition warnings when building with
54 clisp. (lp#576787, thanks to Josh Elsasser)
55 * new platform: experimental support for ppc/openbsd (thanks to Josh
57 * bug fix: Floating-point traps now work on ppc/linux.
59 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
60 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
61 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
62 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
63 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
64 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
66 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
67 contain additional data structures and tools for concurrent programming;
68 at the moment it contains a lock-free queue, and a lock-free mailbox
70 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
71 GET-MUTEX but takes &key rather than &optional parameters. Also added
72 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
74 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
75 SB-THREAD:WAIT-ON-SEMAPHORE.
76 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
78 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
79 conditions to defer the deadline for forever.
80 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
82 * enhancement: errors from NO-APPLICABLE-METHOD and
83 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
84 generic function call.
85 * enhancement: SB-BSD-SOCKET improvements
86 ** sockets and socket streams now have a more informative printed
87 representation based on the corresponding SOCKET-NAME and
89 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
91 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
92 CL:CLOSE when appropriate, and no longer disassociates the stream
93 from the socket if close failed. (lp#543951)
94 * improvements to the instrumenting profiler
95 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
96 ** optimization: counters no longer use locks for the overflow mode.
97 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
98 incurred an off-by-one miscount.
99 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
100 * enhancement: improved DEFMETHOD pretty-printing.
101 * enhancement: perform range reduction when arguments are too large for
102 x87's transcendentals (instead of returning 0). (lp#327192)
103 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
104 some of CL-PPCRE's macros. (lp#570079)
105 * enhancement: our machine code is slightly less hostile to valgrind on
107 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
108 to Robert Swindells and Aleksej Saushev)
109 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
110 * bug fix: a rare case of startup-time page table corruption.
111 * bug fix: a semaphore with multiple waiters and some of them unwinding due
112 to timeouts could be left in an inconsistent state.
113 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
114 * bug fix: misoptimization of multiplication by one in
115 (SB-C::FLOAT-ACCURACY 0) policies.
116 * bug fix: miscounts in SB-PROFILE.
117 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
118 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
119 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
120 up itself" (March 2010) for further details.
121 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
122 against length of the list if the element is found before the specified
123 END is reached. (thanks to Alec Berryman, lp#554385)
124 * bug fix: errors signalled during package graph modification no longer
125 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
126 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
127 :SB-DOC feature. (lp#552564)
128 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
129 * bug fix: more robust runtime executable path detection. (lp#375549)
130 * bug fix: GCD always returns positive values. (lp#413680)
131 * bug fix: Converting division to multiplication by reciprocal handles
133 * bug fix: We were too eager in eliding range reduction tests on x87.
134 The maximal magnitude is 2^63, not 2^64.
135 * bug fix: Transforms for TRUNCATE don't die when the result is completely
137 * bug fix: Maybe restore buildability on Alpha.
138 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
140 * bug fix: RANDOM-STATE can be printed readably again.
141 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
142 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
143 types) could result in type mismatches during compilation.
145 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
146 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
147 stack frame thrown from.
148 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
149 compiler optimization qualities inside dynamic extent of its body.
150 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
151 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
153 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
154 constraint propgation, allowing better compilation eg. when used to
155 access structures with WITH-SLOTS. (lp#520366)
156 * optimization: the compiler is now more aware of the type of the underlying
157 storage vector for multidimensional simple arrays resulting in better code
158 for accessing such arrays.
159 * optimization: passing NIL as the environment argument to TYPEP no longer
160 inhibits optimizing it. (lp#309788)
161 * optimization: more efficient register usage when handling single-float
162 arguments on x86-64. (thanks to Lutz Euler)
163 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
164 pre-allocated temporary vectors. (lp#496249)
165 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
166 in :INITIAL-CONTENTS. (lp#523612)
167 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
168 functions. (lp#524707)
169 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
170 WITH-SLOTS usages during compilation.
171 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
172 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
173 all x86oid platforms with :UD2-BREAKPOINTS target feature.
174 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
175 instruction (tested on x86oid linux with ud2-breakpoints).
176 * bug fix: slam.sh now works on win32.
177 * bug fix: better differences of numeric types. (lp#309124)
178 * bug fix: arrays declared intersection and union types can have their
179 upgraded element type derived. (lp#316078)
180 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
181 threads started during profiling. (lp#472499)
182 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
184 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
185 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
186 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
187 values instead of signaling an error. (lp#309093)
188 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
190 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
191 declarations (lp#497321)
192 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
193 and failed to detect circular lists (lp#452008)
194 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
196 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
197 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
198 due to it, so that handlers can run.
199 * bug fix: reparsing undefined types if they have become defined since
201 * bug fix: missing &REST type in a proclamation for a function with both
202 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
203 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
204 expanded calls (lp#542174)
205 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
206 than just at toplevel form.
208 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
209 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
210 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
211 but work on type specifiers.
212 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
213 to name a type specifier.
214 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
215 specifier is valid where "valid" basically means "would be accepted as
216 second argument of TYPEP".
217 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
218 returns the function's declared, or derived FTYPE.
219 * new feature: SB-POSIX now supports accessing the d_ino member of
220 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
221 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
222 provide for seeding a RANDOM-STATE object with user-provided data or
223 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
224 attempt to initialize the returned state from the operating system's
225 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
226 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
227 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
228 * bug fix: Fix grammar and style issues for the docstrings of
229 printer-related variables and functions. (Thanks to mon_key; launchpad
231 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
233 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
234 in a row even though a handler defered the deadline long into the
236 * bug fix: A deadline handler was run without interrupts enabled for a
237 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
238 in infinitely spinning, non-killable threads.
239 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
240 before reaching the erring stack frame.
241 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
242 real power. (launchpad bug lp#525949)
243 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
244 GENCGC platforms. (launchpad bug lp#529014)
245 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
246 (launchpad bug lp#525916)
247 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
248 (Thanks to Robert Goldman)
250 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
251 * optimization: ROUND with a single single-float or double-float argument
252 is properly inlined when possible.
253 * optimization: Slightly better code is generated for integer<->float
254 conversions and for single-float<->double-float conversions on x86-64.
255 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
256 code for 32-bit and 64-bit rotations on x86-64.
257 * bug fix: The install script changes the ownership of directories as well
258 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
259 launchpad bug lp#508485)
260 * bug fix: TRUNCATE with a single single-float or double-float argument is
261 properly inlined when possible. (launchpad bug lp#489388)
262 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
263 no longer causes a compiler error on x86 and ppc.
264 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
265 always relative to *READTABLE* rather than the passed argument.
267 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
268 * minor incompatible change: threading support is now enabled by default
270 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
272 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
273 are now caught and reported just like errors during macroexpansion.
274 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
275 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
276 * enhancement: ASDF systems can now depends on SB-QUEUE.
277 * fixes and improvements related to Unicode and external formats:
278 ** bug fix: error handling and restart usage in the ucs-2 external format
280 ** there is now an implementation of the ucs-4 external format.
281 ** the utf-16 and utf-32 external formats are supported.
282 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
283 in the environment. setenv() and unsetenv() are also provided. (reported by
284 Fare Rideau; launchpad bug lp#460455)
285 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
286 loading. This ensures sensible errors for .FASL files from other
287 implementations on case-insensitive filesystems. (reported by Willem
288 Broekema; launchpad bug lp#489417)
289 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
290 Willem Broekema; launchpad bug lp#489698).
291 * bug fix: some minor code rearrangements to reenable warning-free building
292 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
293 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
295 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
298 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
299 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
300 * improvement: support O_LARGEFILE access to files larger than 2GB on
301 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
302 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
303 definitions for methods specializing on the passed class itself.
304 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
305 definitions for methods specializing on the passed class itself, or on
307 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
308 about itself during the build (e.g. for M-? in Slime), if this flag is
309 enabled in customize-target-features.lisp. This will increase the core
310 size by about 5-6mb, though, so it's mostly interesting to SBCL
312 * new feature: various GENCGC tuning parameters have been experimentally
313 documented and exported from SB-EXT. See documentation for details.
314 * fixes and improvements related to Unicode and external formats:
315 ** the Unicode character database has been upgraded to the
316 Unicode 5.2 standard, giving names and properties to a number of new
317 characters, and providing a few extra characters with case
319 ** improvement: restarts for providing replacement input/output on coding
320 errors for fd-stream external formats.
321 ** improvement: where :<encoding> is a keyword corresponding to an
322 external format the system supports, it is now possible to specify
323 (:<encoding> :replacement <character>) as an external format which will
324 automatically substitute <character> on encoding or decoding errors for
325 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
327 ** improvement: the file streams underlying the standard streams (such as
328 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
329 which uses the replacement mechanism to handle encoding errors,
330 preventing various infinite error chains and unrecoverable I/O
332 ** minor incompatible change: the utf-8 external format now correctly
333 refuses to encode Lisp characters in the surrogate range (char-codes
334 between #xd800 and #xdfff).
335 ** fix a typo preventing conversion of strings into octet vectors
336 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
338 ** fix a bug in the octet multibyte handling of decoding errors and the
339 USE-VALUE restart. (launchpad bug lp#314939)
340 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
341 restart on fd-stream decoding errors.
342 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
343 error is near the end of file.
344 ** fix a double-error case in unibyte octet conversions, when the first
345 use of USE-VALUE is ignored.
346 ** fix bugs in handling of undefined code points in unibyte encodings.
347 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
348 streams after an UNREAD-CHAR.
349 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
350 object is allocated in a boxed region of dynamic space.
351 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
352 fork with multiple Lisp threads running is made, instead of going
353 ahead with unpredictable consequences. (reported by Leslie Polzer)
354 * bug fix: uses of slot accessors on specialized method parameters within
355 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
356 error while finalizing the class. This fix may cause classes with slot
357 accessors to be finalized later than previously. (reported by Lars Rune
358 Nøstdal; launchpad bug lp#473699)
359 * bug fix: restore buildability on the MIPS platform. (regression from
360 1.0.30.38, reported by Samium Gromoff)
361 * bug fix: inspecting closures is less likely to fail with a type error.
362 * bug fix: no timer starvation when setting the system clock back.
363 (launchpad bug lp#460283)
364 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
365 standard pprint dispatch table as specified by CLHS.
366 * bug fix: give CLISP a hint about a type declaration to enable it to build
367 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
369 * bug fix: correctly dump literal objects in defaulting forms of arglists.
370 (reported by Attila Lendvai; launchpad bug lp#310132)
371 * bug fix: distinguish in type specifiers between arrays that might be
372 complex and arrays that are definitely complex. (launchpad bug lp#309129)
373 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
374 type. (reported by Levente Mészáros; launchpad bug lp#485972)
375 * bug fix: setting the value of a symbol-macro within a method in the
376 presence of type declarations works properly again. (reported by Iban
377 Hatchondo; launchpad bug lp#485019)
379 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
380 * optimization: faster FIND and POSITION on strings of unknown element type
381 in high SPEED policies. (thanks to Karol Swietlicki)
382 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
384 * improvement: better error signalling for bogus parameter specializer names
385 in DEFMETHOD forms (reported by Pluijzer)
386 * bug fix: DELETE-FILE once again works on logical pathnames (regression
388 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
390 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
391 removes previous default initargs (reported by Lars Rune Nøstdal and
393 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
394 lambda-lists. (reported by Peter Seibel)
395 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
396 correctly when starting from an executable core without saved runtime
397 options (reported by Faré Rideau, thanks to Zach Beane)
398 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
399 an optimization note instead. (reported by Martin Cracauer)
400 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
401 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
402 new process group if it doesn't need to share stdin with the sbcl
403 process. (thanks to Leslie Polzer)
404 * bug fix: SATISFIES could be misoptimized to refer to a local function.
405 (reported by Stanislaw Halik)
407 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
408 * improvement: stack allocation is should now be possible in all nested
409 inlining cases: failure to stack allocate when equivalent code is manually
410 open coded is now considered a bug.
411 * improvements related to Unicode:
412 ** the Unicode character database has been upgraded to the
413 Unicode 5.1 standard, giving names and properties to a number of new
414 characters, and providing a few extra characters with case
416 ** the system now recognizes and produces names for Unicode Hangul
418 ** the EBCDIC-US external-format is now supported for octet operations
419 (as well as for stream operations).
420 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
421 be used to output toplevel compile-time effects into a separate .CFASL
423 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
424 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
426 * optimization: TRUNCATE on known single- and double-floats is upto 25%
428 * optimization: division of floating point numbers by constants uses
429 multiplication by reciprocal when an exact reciprocal exists.
430 * optimization: multiplication of single- and double-floats floats by
431 constant two has been optimized.
432 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
433 sufficient type information is available. (thanks to Leslie Polzer)
434 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
435 known structure objects are as efficient as defstruct generated accessors.
436 * optimization: unused vector creation can now be optimized away.
437 * improvement: ASDF systems can now depends on SB-INTROSPECT.
438 * improvement: a STYLE-WARNING is signalled when a generic function
439 clobbers an earlier FTYPE proclamation.
440 * improvement: the compiler is able to track the effective type of
441 generic function across method addition and removal even in the
442 absence of an explicit DEFGENERIC.
443 * improvement: DESCRIBE now reports on symbols naming undefined
444 but assumed or declared function as well.
445 * improvement: recompilation of systems using SB-GROVEL now works
446 (thanks to Leslie Polzer)
447 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
448 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
450 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
451 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
452 well as user defined declaration names.
453 ** VARIABLE-INFORMATION is now aware of alien variables.
454 * improvement: improved address space layout on OpenBSD (thanks to Josh
456 * improvement: pretty-printing of various Lisp forms has been improved
457 (thanks to Tobias Rittweiler)
458 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
459 unused were deleted in safe code. (reported by John Fremlin)
460 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
462 * bug fix: some out-of-line array predicates were missing (reported by
464 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
466 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
467 (thanks to Larry D'Anna)
468 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
469 as well. (reported by Josh Elsasser)
470 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
471 leading to possible attempts to delete the same file twice. See docstring
472 on DELETE-FILE for details. (reported by John Fremlin)
473 * bug fix: DELETE-FILE once again deletes the file named by the pathname
474 designator argument, rather than its truename. (reported by Luis
476 * bug fix: the low-level debugger had 32-bit assumptions and was missing
477 information about some array types. (thanks to Luis Oliveira)
478 * bug fix: moderately complex combinations of inline expansions could
479 be miscompiled if the result was declared to be dynamic extent.
480 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
481 form (+ <variable> <integer>) were miscompiled under certain
483 * bug fix: in some cases no compiler note about failure to stack allocate
484 was emitted, even if the objects were in fact heap allocated.
485 * bug fix: minor violation of "otherwise inaccessible" rule for stack
486 allocation could cause objects users might reasonably expect to
487 be heap allocated to be stack allocated.
488 * bug fix: DESCRIBE signalled an error for generic functions under
489 certain circumstances. (thanks to Leslie Polzer)
490 * bug fix: Fixed spelling of an error message.
492 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
493 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
494 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
495 of SB-THREAD:THREAD-ERROR-THREAD.
496 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
497 * new feature: docstrings for local and anonymous functions are no longer
498 discarded. (thanks to Leslie Polzer)
499 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
500 values in other threads.
501 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
502 about object allocation.
503 * optimization: division of a real float by a complex float is implemented
504 with a specialised code sequence.
505 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
506 keywords is an order of magnitude faster.
507 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
508 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
509 methods, and similarly for non-standard metaclass classes as long as there
510 are no methods additional on MAKE-INSTANCE.
511 * optimization: more efficient type-checks for FIXNUMs when the value
512 is known to be a signed word on x86 and x86-64.
513 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
514 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
516 * optimization: compiler is smarter about delegating argument type checks to
518 * optimization: several character functions are now compiled somewhat more
519 efficiently. (reported by Lynn Quam)
520 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
521 * improvement: less unsafe constant folding in floating point arithmetic,
522 especially for mixed complex/real -float operations.
523 * optimization: constant double and single floats are stored in native
524 unboxed format on x86[-64].
525 * optimization: smarter code for arithmetic operations with constant floats,
526 complex floats, or integers on x86[-64].
527 * optimization: smarter code for conjugate/multiplication of float complexes
528 and abs/negate of floats on x86-64.
529 * optimization: more efficient complex float and real float operations on
531 * improvement: complex float division is slightly more stable.
532 * improvement: DESCRIBE output has been reworked to be easier to read and
533 contains more pertinent information.
534 * improvement: failure to provide requested stack allocation compiler notes
535 provided in all cases (requested stack allocation not happening without a
536 note being issued is now considered a bug.)
537 * bug fix: SB-POSIX exports the documented types and functions
538 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
539 types. (reported by "abhi")
540 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
541 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
542 (thanks to Paul Khuong)
543 * bug fix: looping around HANDLER-CASE could silently consume stack space
544 on each iteration. (reported by "foobar")
545 * bug fix: better error signalling when calls to functions seeking elements
546 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
547 (reported by Tobias Rittweiler)
548 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
549 directory components now works as it used to. (various prolems reported by
550 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
551 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
552 (reported by Elliot Slaughter, thanks to Stas Boukarev)
553 * bug fix: bogus undefined variable warnings from fopcompiled references to
554 global variables. (thanks to Lars Rune Nøstdal)
555 * bug fix: foreign function names should now appear in backtraces on
556 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
557 * bug fix: SETF compiler macro documentation strings are not discarded
559 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
560 (thanks to Alex Plotnick)
561 * bug fix: SLEEP accepts large integer arguments, truncating them to
562 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
563 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
564 * bug fix: compiler notes for expensive slot type checks could be emitted
565 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
567 changes in sbcl-1.0.29 relative to 1.0.28:
568 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
569 https://bugs.launchpad.net/sbcl
570 Bugs can be reported directly there, or by sending email to
571 sbcl-bugs@lists.sourceforge.net
572 (no subscription required.)
573 * minor incompatible change: under weak type checking policy integer
574 types are weakened less aggressively.
575 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
576 allowed to return, which causes SBCL to quit with exit status 0. Previously
577 if the function returned with a small integer return value, that value
578 was accidentally reused as the exit status.
579 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
580 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
581 :HASH-FUNCTION argument. Refer to user manual for details.
582 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
584 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
585 microseconds since the Unix epoch on all platforms.
586 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
587 allows the compiler to safely elide boundedness checks for special
589 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
590 the symbol, prohibits both lexical and dynamic binding. This is mainly an
591 efficiency measure for threaded platforms, but also valueable in
593 * new feature: UNC pathnames are now understood by the system on Windows.
594 * optimization: the compiler uses a specialized version of FILL when the
595 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
597 * optimization: accesses to potentially non-simple arrays where element type
598 is known are 50% faster.
599 * optimization: compiler now generates faster array typechecking code.
600 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
602 * optimization: multidimensional array accesses in the absence of type
603 information regarding array rank are approximately 10% faster due to
604 open coding of ARRAY-RANK.
605 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
606 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
608 * optimization: result of call to VECTOR can now be stack allocated.
609 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
610 as long as the resulting array is one-dimensional and has a known
611 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
612 length of the list matches the known length of the vector does not
613 allocate the list as an intermediate step. Ditto for VECTOR and simple
615 * optimization: MAKE-ARRAY can now stack allocate in the presence of
616 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
617 known element type, and is known to be simple and one dimensional.
618 * improvement: SBCL now emits a compiler note where stack allocation was
619 requested but could not be provided (not in all cases, unfortunately)
620 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
621 * improvement: pretty-printing loop has been implemented properly. (thanks
622 to Tobias Rittweiler)
623 * documentation: CLOS slot typechecing policy has been documented.
624 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
625 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
626 pointer, leading to memory faults. (thanks to Bart Botta)
627 * bug fix: better floating point exception handling on x86/OpenBSD.
628 (thanks to Josh Elsasser)
629 * bug fix: exit status from QUIT when called under --script was lost
630 (reported by Hubert Kauker)
631 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
632 same implementation of FILL to initialize the array, even if a more
633 efficient one was available (reported by Stas Boukarev, thanks to
635 * bug fix: potential miscompilation of array stack allocation on x86 and
636 x86-64. (reported by Time Tossavainen)
637 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
638 result in their subforms being treated as top level forms. (reported by
640 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
641 than a machine register could leave garbage in the high bits of the
642 result register (bug 316325).
643 * bug fix: disable address space randomization Linux/x86-64 as well,
644 not just x86-64. (reported by Ken Olum)
645 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
646 generate incorrect code.
647 * bug fix: #201; type inference for CONS and ARRAY types could derive
648 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
649 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
650 could not be assigned to or bound with PROGV. (reported by Lorenz
652 * bug fix: the value of CL:- in the inspector was the previous expression
653 evaluated rather than the expression being evaluated.
654 * bug fix: constants can no longer be locally declared special.
655 * bug fix: signals delivered to threads started from foreign land (read:
656 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
657 thread by blocking all signals and resignalling.
658 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
659 from :INITFORM, if any.
661 changes in sbcl-1.0.28 relative to 1.0.27:
662 * a number of bugs in cross-compilation have been fixed, with the ultimate
663 result that building under (at least) clisp should be much more reliable.
664 * minor incompatible changes: echo-streams now propagate unread-char to the
665 underlying input stream, and no longer permit unreading more than one
667 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
668 frames, allowing for instance more reliable backtraces.
669 * improvement: the debugger REPL can now reference lexical variables
670 by name directly for code compiled with (DEBUG 3).
671 * improvement: errors from malformed declarations now have better source
672 paths associated with them. (thanks to Tobias Rittweiler)
673 * optimization: faster local calls on x86/x86-64
674 * bug fix: some error messages for out-of-bound array indexes confused the
675 index and the bound. (thanks to Stas Boukarev)
676 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
678 * bug fix: running regressions tests in shells without OSTYPE set now works.
679 (reported by Harald Hanche-Olsen)
680 * bug fix: more robust static space exhaustion signalling from
681 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
682 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
683 docstring away instead of storing it under names such as (LAMBDA (X)).
684 (reported by Leslie Polzer)
685 * bug fix: timers could go off in the wrong order, be delayed indefinitely
686 (thanks to Ole Arndt for the patch)
687 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
688 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
689 potentially-invalid effective methods in its cache.
690 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
691 instances as well (thanks to Paul Khuong)
692 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
693 SB-POSIX:WAITPID and their C equivalents.
694 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
696 changes in sbcl-1.0.27 relative to 1.0.26:
697 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
698 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
699 * improvement: the system either recovers from stack exhaustion or dies
700 properly as opposed to leaving the user uncertain of whether the handler
701 trampled on some random memory next to the stack or having to rely on
702 --lose-on-corruption (which is still a good idea to use in production
703 because stack exhaustion can happen in signal handlers which will likely
705 * bug fix: fix gc related interrupt handling bug on ppc (regression from
706 1.0.25.37, reported by Harald Hanche-Olsen)
707 * bug fix: work around signal delivery bug in darwin (regression from
708 1.0.25.44, reported by Sidney Markowitz)
709 * bug fix: fix ERROR leaking memory (reported by David Thompson)
711 changes in sbcl-1.0.26 relative to 1.0.25:
712 * incompatible change: an interruption (be it a function passed to
713 INTERRUPT-THREAD or a timer function) runs in an environment where
714 interrupts can be enabled. The interruption can use
715 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
716 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
717 potentially running out of stack. Keep in mind that in the absence
718 of WITHOUT-INTERRUPTS some potentially blocking operation such as
719 acquiring a lock can enable interrupts.
720 * incompatible change: GC-OFF and GC-ON are removed, as they were
721 always unsafe. Use WITHOUT-GCING instead.
722 * new feature: runtime option --disable-ldb
723 * new feature: runtime option --lose-on-corruption to die at the
724 slightest hint of possibly non-recoverable errors: running out of
725 memory, stack, alien stack, binding stack, encountering a memory
726 fault, etc. In the absence of --lose-on-corruption a warning is
728 * enhancement: detect binding stack exhaustion
729 * enhancement: detect alien stack exhaustion on x86/x86-64
730 * improvement: generally more stable and reliable interrupt handling
731 * improvement: there is a per thread interruption queue,
732 interruptions are executed in order of arrival
733 * improvement: a repeating timer reschedules itself when the it has
734 finished, but expiration times are spaced equally. If an
735 expiration time is in the past it will trigger after a short grace
736 period that may give a chance to other things to run.
737 * optimization: slightly faster gc on multithreaded builds
738 * optimization: faster WITHOUT-GCING
739 * bug fix: when JOIN-THREAD signals an error, do it when not holding
740 important locks so that the debugger/handler doesn't produce
741 recursive errors or deadlock.
742 * bug fix: real-time signals are not used anymore, so no more
743 hanging when the system wide real-time signal queue gets full.
744 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
746 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
747 * bug fix: fix random memory faults related to interrupts on alpha
748 * bug fix: fix random memory faults related to interrupts on sparc
749 * bug fix: fix deadlocks related to starting threads
750 * bug fix: fix deadlines on locks on futex platforms
751 * bug fix: restore errno in signal handlers
752 * bug fix: fix deadlocks related to hash tables
753 * bug fix: fix deadlocks in pcl
755 changes in sbcl-1.0.25 relative to 1.0.24:
756 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
757 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
758 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
759 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
760 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
761 better name and does not return values so stale on multiprocessor systems.
762 Also, HOLDING-MUTEX-P was added for about the only sane usage of
764 * improvement: unithread builds keep track of MUTEX-VALUE.
765 * improvement: reading from a TWO-WAY-STREAM does not touch the output
766 stream anymore making it thread safe to have a concurrent reader and
767 a writer, for instance, in a pipe.
768 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
769 arguments, making compiler-macros for SETF-functions able to inspect
770 their constant arguments.
771 * improvement: COMPILE-FILE reports times with millisecond accuracy
772 (thanks to Luis Oliveira)
773 * optimization: CHAR-CODE type derivation has been improved, making
774 TYPEP elimination on subtypes of CHARACTER work better. (reported
775 by Tobias Rittweiler, patch by Paul Khuong)
776 * bug fix: setting alien structure fields of type struct by value now
777 computes the right offset for the memory copy.
778 * bug fix: compilation problem involving inlined calls to aliens with
779 result type VOID. (reported by Ken Olum)
780 * bug fix: #235a; sequential inline expasion in different policies no
781 longer reuses the functional from the previous expansion site.
782 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
783 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
784 * bug fix: named ENUMs in multiply-referenced alien record types no longer
785 cause an implied type redefinition. Regression from 1.0.21.29.
786 * bug fix: sign-extension of small signed return values now works with C
787 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
788 * improvements to the Windows port:
789 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
790 Westfold, thanks to Rudi Schlatte)
792 changes in sbcl-1.0.24 relative to 1.0.23:
793 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
794 vector of a multidimensional SIMPLE-ARRAY.
795 * new feature: the system now signals a continuable error if standard
796 readtable modification is attempted. (thanks to Tobias Rittweiler)
797 * new feature: DIRECTORY has been extended with a non-standard keyword
798 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
799 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
800 has been robustified and documented better. (thanks to Robert Goldman)
801 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
802 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
803 * tradeoff: constant FORMAT control strings are now compiled unless
804 SPACE > SPEED (previously only when SPEED > SPACE.)
805 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
807 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
809 * bug fix: lexical type declarations are now correctly reported by
810 SB-CLTL2. (reported by Larry D'Anna)
811 * bug fix: STRING-TO-OCTETS did not handle :START properly when
812 using UTF-8 as external format. (thanks to Luis Oliveira)
813 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
814 are signalled correctly. (thanks to Stas Boukarev)
815 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
816 designator. (thanks to Tobias Rittweiler)
817 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
818 designator, and returns T instead of the function. (thanks to
820 * bug fix: direct superclasses of STANDARD-CLASS and
821 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
822 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
823 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
824 when no class with the named slot yet exists no longer causes a
825 compile-time style-warning.
826 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
827 in safe code. (reported by Didier Verna)
828 * bug fix: #430; nested structure constructors can stack allocate.
829 * bug fix: on some 64-bit platforms dynamic space size was truncated
830 to #xffff0000 bytes. (reported by Benjamin Lambert)
831 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
832 REPL unusable. (reported by Daniel Herring)
833 * bug fix: return values of READ-SEQUENCE did not take :START into
834 account on file streams, regressions since 1.0.12.22. (reported by
835 Thomas Russ, patch by Paul Khuong)
836 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
837 method specializer used to confuse permuation vector optimization.
838 * bug fix: system inserted bogus implicit type declarations for local
839 special variables in DEFMETHOD bodies.
840 * bug fix: #354; duplicated frames in backtraces due to
841 non-tail-call-optimized XEPs to functions with return type NIL
843 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
844 initializes structure object slots according to DEFSTRUCT initforms,
845 and DEFSTRUCT forms :INCLUDEind structure classes defined using
846 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
847 (reported by Bruno Haible and Stephen Wilson)
848 * bug fix: #395; fill-pointer output streams used now support
849 element-type BASE-CHAR as well.
850 * bug fix: compiler error when attempting to derive return value of
851 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
853 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
855 * bug fix: Mac OS X binaries should now be portable between Leopard
858 changes in sbcl-1.0.23 relative to 1.0.22:
859 * enhancement: when disassembling method functions, disassembly
860 for the associated fast function is also produced.
861 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
863 * optimization: printing with *PRINT-PRETTY* true is now more
864 efficient as long as the object being printed doesn't require
865 special handling by the pretty printer.
866 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
867 now interact correctly with type declarations.
868 * partial bug fix: PCL detects infinite recursion during wrapper
869 validation. (thanks to Attila Lendvai)
870 * bug fix: #426; nested function calls are inlined properly.
871 Previously if FOO was an inline function, in calls of the form
872 (FOO (FOO ...)) the outer call was not inlined.
873 * bug fix: long long arguments passed in registers to alien
874 functions on PowerPC Linux and NetBSD are now handled correctly
875 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
877 changes in sbcl-1.0.22 relative to 1.0.21:
878 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
879 for the shared object in the current directory, but passes the native
880 namestring of the designated pathname to the operation system's shared
881 object loading function as-it.
882 * minor incompatible change: --disable-debugger toplevel option now takes
883 effect before processing of initialization files and --eval or --load
885 * new feature: new commandline argument: --script, which supports
886 shebang lines. See documentation for details. (based on work by
888 * new feature: SAVE-LISP-AND-DIE can save current values of
889 --dynamic-space-size and --control-stack-size in the executable core,
890 causing it to skip normal runtime option processing. See documentation
891 for details. (thanks to Zach Beane)
892 * enhancement: inoccous calls to EVAL or generic functions dispatching
893 on subclasses of eg. STREAM no longer cause compiler notes to appear.
894 * enhancement: the system no longer resignals errors from --load and
895 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
896 associated with the original error to be lost. (thanks to Ariel
898 * enhancement: :DONT-SAVE keyword argument has been added to
899 LOAD-SHARED-OBJECT for controlling interaction with
900 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
901 the effects of an earlier LOAD-SHARED-OBJECT call.
902 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
903 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
904 provided. (reported by Cedric St-Jean)
905 * bug fix: circularity handling in the reader did not treat raw
906 structure slots correctly. (reported by Cedric St-Jean)
907 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
908 file descriptors when there were none.
909 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
910 was broken. (reporteed by Willem Broekema)
911 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
912 pathnames without a directory.
913 * bug fix: COMPILE-FILE did not warn about undefined variable
914 references at toplevel, and LOAD of the resulting fasl did
916 * bug fix: functions with non-required arguments used to end up with
917 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
918 * bug fix: redefining a function with non-required arguments didn't
919 update the system's knowledge about its call signature properly.
920 * bug fix: fixed #431; incompatible alien record type redefinitions
921 are detected and handled. (reported by Neil Haven)
922 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
923 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
925 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
926 after alien stack frames.
927 * bug fix: strings passed to mk{s,d}temp lacked null termination
929 changes in sbcl-1.0.21 relative to 1.0.20:
930 * new feature: the compiler is able to track the effective type of a
931 generic function across method addition and removal.
932 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
933 appropriately typed structure slots without locking.
934 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
935 information like those gathered by TIME using a programming-friendly
937 * new feature: TIME reports time taken even if the form performs a
938 non-local transfer of control.
939 * enhancement: reduced conservativism on GENCGC platforms: on
940 average 45% less pages pinned (measured from SBCL self build).
941 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
942 mutate constant symbols or violate declaimed type of the symbol.
943 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
944 sleeping on the semaphore in heavily contested semaphores.
945 * bug fix: semaphores and condition variables were not interrupt
947 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
948 owned by other threads anymore.
949 * bug fix: FIND on lists called KEY outside the specified
950 subsequence. (reported by budden)
951 * bug fix: LOG doesn't use single-float intermediate results when
952 given mixed integer and double-float arguments, leading to better
953 precision. (reported by Bob Felts)
954 * bug fix: LOG with base zero returned values of inconsistent type.
956 changes in sbcl-1.0.20 relative to 1.0.19:
957 * minor incompatible change: OPTIMIZE qualities
958 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
959 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
960 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
961 * documentation: some slot access efficiency guidelines have been
962 added to the user manual.
963 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
964 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
965 as ASSOC and MEMEBER.
966 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
967 to more efficient EQ-comparison versions more often.
968 * optimization: enhanced derivation of DOLIST iteration variable type
970 * optimization: constant folding of simple (LIST ...) forms as DOLIST
972 * optimization: runtime lookup of function definitions can be
973 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
974 * optimization: compiler is able to derive the return type of
975 (AREF (THE STRING X) Y) as being CHARACTER.
976 * optimization: CLRHASH on empty hash-tables no longer does pointless
977 work. (thanks to Alec Berryman)
978 * optimization: REPLACE deftransforms don't punt when :START1 or
980 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
981 no longer emits a code deletion note. (reported by Andrew
983 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
984 functions with an odd number of &OPTIONAL arguments, a &REST
985 argument, and one or more &KEY arguments at the call site.
986 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
987 arguments appeared at call sites as well.
988 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
989 READ-LINE &co can no longer read from them afterwards. (reported
991 * bug fix: fixed #427: unused local aliens no longer cause compiler
992 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
994 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
995 alien-stack leakage. (reported by Andy Hefner)
996 * bug fix: PROGV signals an error when an attempt to violate declared
997 type of a variable or bind a constant is made.
998 * bug fix: SET signals an error when an attempt to violate declared
999 type of a variable is made.
1000 * bug fix: restart computation during the execution of a restart
1001 test function no longer causes infinite recursion. (reported by
1003 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1004 signals an error. (thanks to Pierre Mai)
1005 * bug fix: EXPORT left symbol unexported in conflict situations.
1006 (thanks to Michael Weber)
1007 * bug fix: correctly handle name conflicts involving CL:NIL.
1008 (thanks to Michael Weber)
1009 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1010 conflicts arising from USEing package with conflicting symbols
1011 correctly. (thanks to Michael Weber)
1013 changes in sbcl-1.0.19 relative to 1.0.18:
1014 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1015 warnings that go otherwise unhandled will be muffled if they are
1016 of the type that's the value of this variable.
1017 * optimization: stack allocation is slightly more efficient on x86
1019 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1020 where a raw slot always is initialized using the initform whose
1021 type is not know sufficiently well a compile-time are now compiled
1022 correctly. (reported by John Morrison)
1023 * bug fix: compiler no longer makes erronous assumptions in the
1024 presence of non-foldable SATISFIES types.
1025 * bug fix: stack analysis missed cleanups of dynamic-extent
1026 arguments in non-let-converted calls to local functions.
1027 * improvements to the Windows port:
1028 ** adjusted address spaces for building on both Win32 and
1029 Win64. (thanks for John Connors)
1030 * fixed some bugs revealed by Paul Dietz' test suite:
1031 ** interval arithmetic during type derivation used inexact integer
1032 to single-float coercions.
1033 ** arithmetic operations involving large integers and single
1034 floats give the same results in compiled and interpreted code.
1035 ** deriving the result type of COERCE no longer signals an error
1036 if the derived type of the second argument is a MEMBER type
1037 containing invalid type specifiers.
1038 ** ADJOIN with constant NIL as second argument works correctly.
1039 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1041 changes in sbcl-1.0.18 relative to 1.0.17:
1042 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1043 profiles only the current thread.
1044 * minor incompatible change: changes to SYMBOL-VALUE of constants
1045 defined with DEFCONSTANT now signal an error.
1046 * enhancement: SB-SPROF now has support for wallclock profiling,
1047 and is also able to profile specific threads. REPORT output
1048 has also additional sorting options.
1049 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1051 * optimization: structure allocation has been improved
1052 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1053 ** out of line constructors are ~10% faster.
1054 ** inline constructors are ~15% faster.
1055 ** inline constructors are capable of dynamic extent allocation
1056 (generally on x86 and x86-64, in some cases on other platforms
1058 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1060 * optimization: file compiler is now able to coalesce non-circular
1061 lists, non-base strings, and bit-vectors. Additionally, constants
1062 are never referenced through SYMBOL-VALUE at runtime.
1063 * optimization: code defining methods on PRINT-OBJECT (and other
1064 generic functions in the COMMON-LISP package) now loads faster.
1065 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1067 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1068 fasl is now deleted. (reported by Attila Lendvai)
1069 * bug fix: READ-LINE always returned NIL for the last line in files.
1070 (reported by Yoshinori Tahara)
1071 * bug fix: more accurate disassembly annotations of foreign function
1072 calls. (thanks to Andy Hefner)
1073 * bug fix: trimming non-simple strings and non-string string
1074 designators when the there is nothing to trim works properly.
1075 (thanks to James Knight)
1076 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1077 (thanks to Travis Cross)
1078 * fixed some bugs revealed by Paul Dietz' test suite:
1079 ** NIL is a valid function name (regression at 1.0.13.38)
1080 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1081 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1082 fill pointers properly (regression at 1.0.12.23)
1083 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1084 displacement indices properly (regression at 1.0.12.23)
1086 changes in sbcl-1.0.17 relative to 1.0.16:
1087 * temporary regression: user code can no longer allocate closure
1088 variable storage on stack, due to bug 419 without explicitly
1089 requesting it. Please consult sbcl-devel for advice if you need to
1090 use this feature in the meanwhile.
1091 * new feature: runtime argument --control-stack-size can be used to
1092 adjust thread default control stack size.
1093 * enhancement: improved TIME output
1094 ** all times are reported using the measured accuracy (milliseconds
1095 for real and GC times, microseconds for everything else.)
1096 ** processor cycle counts on x86 and x86-64.
1097 ** interpreted forms are counted for both evaluator modes.
1098 ** number of lambdas converted by the compiler is reported.
1099 ** CPU percentage report (computed from real and total run time.)
1100 ** more comprehensive run time reporting, using a condenced format
1101 ** interperted form, lambda, and page fault counts are omitted
1103 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1105 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1106 * optimization: two argument forms of LAST are upto ~10% faster
1107 in normal SPEED policies.
1108 * optimization: NCONC no longer needs to heap cons its &REST list
1109 in normal SPEED policies.
1110 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1111 to Sidney Markowitz)
1112 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1113 regression since 1.0.9.1. (thanks to Eric Marsden)
1114 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1115 since 1.0.15.36. (thanks to Paul Khuong)
1116 * bug fix: LAST when always returned the whole list when given a bignum
1117 as the second argument.
1118 * bug fix: dynamic extent allocation of nested lists and vectors
1119 could leak to otherwise accessible parts.
1120 * bug fix: invalid optimization of heap-allocated alien variable
1122 * bug fix: fasl header checking is less vulnerable to different
1123 platform word lengths.
1124 * bug fix: more correct assembler syntax for GNU binutils
1125 2.18.50.0.4 support. (thanks to Marijn Schouten)
1126 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1128 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1129 declarations) successfully. (reported by Attila Lendvai)
1131 changes in sbcl-1.0.16 relative to 1.0.15:
1132 * minor incompatible change: revert the changes to sb-posix's error
1133 signaling added in 1.0.14.
1134 * minor incompatible change: change PROBE-FILE back to returning
1135 NIL whenever we can't get a truename, as was the case before 1.0.14.
1136 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1137 inherits from ERROR instead of just CONDITION.
1138 * new feature: SB-INTROSPECT can provide source locations for instances
1139 as well. (thanks to Tobias Rittweiler)
1140 * optimization: binding special variables now generates smaller code
1141 on threaded platforms.
1142 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1143 and cases where no :TEST is given but the compiler can infer that
1144 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1145 * optimization: better LOGNOT on fixnums.
1146 * optimization: modular arithmetic for a particular requested width
1147 is implemented using a tagged representation unless a better
1148 representation is available.
1149 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1150 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1151 for wellformedness and returns a specialized vector. (reported by
1152 Francois-Rene Rideau)
1153 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1154 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1155 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1156 unscheduling timer at the same time as another timer fires.
1157 * bug fix: don't reschedule timers for dead threads.
1158 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1159 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1160 bogus errors if select() was interrupted.
1161 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1163 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1164 * enhancement: cleaner backtraces for interactive interrupts, as
1165 well as other cases where the interesting frames used to be
1166 obscured by interrupt handling frames.
1167 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1168 now supported, and tracing a whole package using (TRACE "FOO") now
1169 traces SETF-functions as well.
1170 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1171 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1172 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1173 * unreadably printed representation of hash-tables now includes
1175 * bug fix: partially fixed #188: type propagation from assignments
1176 is now more efficient.
1177 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1178 'DOUBLE-FLOAT) are not flushable.
1179 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1180 full address of the object, and none of the tag bits.
1181 * bug fix: readably printing hash-tables now respects other printer
1182 control variables. (reported by Cedric St-Jean)
1183 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1184 keyword with MAKE-HASH-TABLE.
1185 * bug fix: export SB-POSIX:MKSTEMP.
1186 * bug fix: SORT was not interrupt safe.
1187 * bug fix: XREF accounts for the last node of each basic-block as
1189 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1190 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1191 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1192 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1193 create obsolete instances in the case of redefinition or
1194 obsoletion of a superclass. (thanks to Andy Hefner)
1195 * bug fix: Support for the Alpha architecture has been revived; it had
1196 suffered somewhat from lack of maintenance since sbcl-1.0.
1197 * improvements to the Windows port:
1198 ** The system detects the codepage to use at startup, instead of
1199 using the value from the saved core. (thanks to Kei Suzuki)
1201 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1202 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1203 (see documentation for details.)
1204 * revived support for OpenBSD (contributed by Josh Elsasser)
1205 * partially fixed bug #108: ROOM no longer suffers from occasional
1206 (AVER (SAP= CURRENT END)) failures.
1207 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1208 bodies no longer cause a WARNING to be signalled. (reported by
1210 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1211 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1212 the bug in TRUNCATE.) (reported by Michael Weber)
1213 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1214 no samples. (reported by Andy Hefner)
1215 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1216 no longer appear as (NIL ...) frames in backtraces.
1217 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1218 is now actually exported from SB-EXT as documented. (reported by
1220 * bug fix: sb-aclrepl now correctly understands how to inspect
1221 single-floats on 64-bit platforms where single-floats are not boxed.
1222 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1223 yet been finalized. (reported by Levente Meszaros)
1224 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1225 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1226 SBCL-specific optimize qualities.
1228 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1229 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1230 an executable in the search path, and does so in the child
1231 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1232 been removed; it can be found in the CVS history, for somebody who
1233 needs that search behavior (see the manual).
1234 * minor incompatible change: compiler policy re. weakening type
1235 checks has changed: now type checks are weakened only if SAFETY < 2
1237 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1238 unparsing of directory pathnames as files. Analogously,
1239 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1240 filename to parse into a directory pathname.
1241 * enhancement: implicit generic function creation now signals a
1242 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1243 users can bind handlers for and muffle around calls to LOAD.
1244 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1245 to be used (using the default stream external format), and allows
1246 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1247 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1248 strings and vectors whose element-type or simplicity is not fully
1249 known at compile-time.
1250 * optimization: STRING-TRIM and related functions no longer allocate
1251 a new string when no trimming needs to be performed. These functions
1252 are also faster than before when the input string has been declared
1254 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1255 * optimization: READ-LINE is significantly faster for files containing
1257 * optimization: non-open coded uses of character comparison operators
1258 (e.g. char=) no longer cons when called with more than one parameter
1259 on platforms supporting dynamic-extent allocation.
1260 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1261 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1262 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1264 * bug fix: some sequence functions elided bounds checking when
1266 * bug fix: too liberal weakening of union-type checks when SPEED >
1268 * bug fix: more bogus fixnum declarations in ROOM implementation
1271 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1272 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1273 :SYNCHRONIZED argument, which makes the hash-table safe for
1274 concurrent accesses (but not iteration.) See also:
1275 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1276 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1277 * optimization: CONCATENATE on strings is an order of magnitude faster
1278 in code compiled with (> SPEED SPACE).
1279 * optimization: SUBSEQ is ~50% faster on lists.
1280 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1281 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1282 END is smaller then START.
1283 * bug fix: SB-PROFILE will no longer report extra consing for nested
1284 calls to profiled functions.
1285 * bug fix: ROOM implementation had bogus fixnum declarations which
1286 could cause type-errors when calling ROOM on large images.
1287 * bug fix: if file compilation is aborted, the partial fasl is now
1288 deleted, and COMPILE-FILE returns NIL as the primary value.
1289 * bug fix: number of thread safety issues relating to SBCL's internal
1290 hash-table usage have been fixed.
1291 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1292 be returned from its body when the values were being returned
1293 using unknown-values return convection and the W-P-O was wrapped
1294 inside an UNWIND-PROTECT.
1295 * bug fix: sb-posix should now compile again under Windows, enabling
1296 slime to work again.
1298 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1299 * incompatible change: hash-table accessor functions are no longer
1300 automatically protected by locks. Concurrent accesses on the same hash-table
1301 from multiple threads can give inconsistent results or even corrupt the
1302 hash-table completely. Multi-threaded applications should do their own
1303 locking at the correct granularity. In the current implementation it is
1304 still safe to have multiple readers access the same table, but it's not
1305 guaranteed that this property will be maintained in future releases.
1306 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1307 and will signal an error at runtime.
1308 * enhancement: SB-THREAD package now exports a semaphore interface.
1309 * enhancement: CONS can now stack-allocate on x86 and
1310 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1312 * enhancement: nested lists can now be stack allocated on
1313 platforms providing stack allocation support.
1314 * enhancement: dynamic-extent support has been extended to support
1315 cases where there are multiple possible sources for the stack
1317 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1318 if the mutex is uncontested on Linux.
1319 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1320 as specified by the CLHS. (thanks to Tobias Rittweiler)
1321 * bug fix: NaN comparison now works on x86-64.
1322 * bug fix: CLOSE :ABORT T on a stream with pending output now
1324 * bug fix: instances of non-standard metaclasses using standard
1325 instance structure protocol sometimes missed the slot type checks
1327 * bug fix: known functions can be inlined in high-debug code.
1329 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1330 * minor incompatible change: the MSI installer on Windows no longer
1331 associates .lisp and .fasl files with the installed SBCL.
1332 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1333 on Windows. (thanks to Luis Oliviera)
1334 * new feature: SB-CLTL2 contrib module now implements
1335 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1336 * optimization: scavenging weak pointers is now more efficient,
1337 requiring O(1) instead of O(N) per weak pointer to identify
1338 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1339 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1340 method bodies using constant slot-names when the first argument is
1341 a specializer parameter for the method.
1342 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1343 names, when the class of the instance is a direct instance
1344 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1345 as slow as the constant slot-name case.)
1346 * optimization: member type construction is now O(N) instead
1348 * optimization: UNION and NUNION are now O(N+M) for large
1349 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1351 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1352 now more readable in environments like Slime which display it.
1353 (thanks to Tobias C. Rittweiler)
1354 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1355 was able to infer the correct argument type for the object on which
1356 the CAS operation was being performed.
1357 * bug fix: copy propagation interfered with parallel assignment
1358 semantics in local calls. (reported by Paul Khuong)
1359 * bug fix: the signed modular fixnum shift compiled to wrong code on
1360 x86 and x86-64. (spotted by a slight modification to some of
1363 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1364 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1365 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1366 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1368 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1369 and generic function now print the object identity for anonymous
1370 instances. (thanks to Attila Lendvai)
1371 * enhancement: as an extension to MOP, SBCL now supports SETF of
1372 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1373 (thanks to Attila Lendvai)
1374 * enhancement: sb-cover has an alternate annotation mode which puts
1375 the form annotations at the car of the form, instead of annotating
1376 it completely. The benefit of this mode is that it shows better
1377 which forms were instrumented by the compiler.
1378 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1379 by printer control variables. (reported by Dan Corkill)
1380 * bug fix: system leaked memory when delayed output was performed by
1381 the OS in smaller chunks then expected. (thanks to David Smith)
1382 * bug fix: system leaked memory when file streams were not closed
1384 * bug fix: large objects written to slow streams that were modified
1385 after the write could end up with the modified state written to
1386 the underlying file descriptor.
1387 * bug fix: multiple threads operating in parallel on the same stream
1388 could cause buffer-overflows.
1389 * bug fix: source location information is stored correctly
1390 (broken since 1.0.6). This bug would generally show up as the
1391 Slime debugger highlighting the wrong form when the sldb-show-source
1393 * bug fix: Branch forms are again annotated as branches in the sb-cover
1395 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1396 on x86-64. (reported by Gregory Vanuxem)
1397 * bug fix: EQUALP could return wrong results for structures with raw
1398 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1399 word). (reported by Vjacheslav Fyodorov)
1400 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1403 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1404 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1405 atomic compare-and-swap operations on threaded platforms.
1406 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1407 allows assigning a global minimum value to optimization qualities
1408 (overriding proclamations and declarations).
1409 * enhancement: closed over variables can be stack-allocated on x86
1411 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1413 * optimization: slot definition lookup is now O(1). This speeds up
1414 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1415 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1416 * optimization: ASSOC and MEMBER can now be open-coded for all
1417 combinations of keyword arguments when second argument is constant
1418 and SPEED >= SPACE. In other cases a specialized version is
1420 * bug fix: using obsoleted structure instances with TYPEP and
1421 generic functions now signals a sensible error.
1422 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1423 (reported by Kristoffer Kvello)
1424 * bug fix: backtrace construction is now more careful when making
1425 lisp-objects from pointers on the stack, to avoid creating bogus
1426 objects that can be seen by the GC.
1427 * bug fix: defaulting of values in contexts expecting more than 7
1428 variables now works on x86-64. (reported by Christopher Laux)
1429 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1431 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1432 as the property-list of a symbol.
1433 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1434 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1435 situations requested, are once again file-compileable. (reported
1438 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1439 * MOP improvement: support for user-defined subclasses of
1440 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1441 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1442 the expansion of DEFMETHOD, is responsible for generating a form
1443 which creates a list of specializers when evaluated. Additional
1444 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1445 debugging and introspective support.
1446 * minor incompatible change: the (unsupported) spinlock interface
1447 has changed: free spinlock now has the value NIL, and a held spinlock
1448 has the owning thread as its value.
1449 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1450 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1452 * enhancement: name of a socket-stream is now "a socket" instead of
1453 "a constant string".
1454 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1455 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1456 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1457 for generic functions. (Thanks to Tobias C. Rittweiler)
1458 * optimization: bignum printing speed has been improved by 20-40%
1459 (depending on the bignum size.)
1460 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1462 * bug fix: the cache used by the CLOS to store precomputed effective
1463 methods, slot offsets, and constant return values is now thread and
1465 * bug fix: generic function dispatch function updating is now thread
1466 and interrupt safe (in the sense that the known issues have been
1468 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1469 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1470 * bug fix: asdf systems with dependencies to the SB-POSIX or
1471 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1472 * bug fix: interrupt safety of applicable method computation has been
1475 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1476 * new contrib: sb-cover, an experimental code coverage tool, is included
1477 as a contrib module.
1478 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1479 significantly faster.
1480 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1481 produce more efficient code on x86-64 if the compiler can determine
1482 that (+ INDEX <constant>) does not require a bounds check and FOO
1483 has an element type at least 8 bits wide.
1484 * enhancement: a new, experimental synchronous timeout facility is
1485 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1486 * enhancement: when a symbol name conflict error arises, the
1487 conflicting symbols are always printed with a package prefix.
1488 (thanks to Kevin Reid)
1489 * enhancement: stepping is now once again supported on the SPARC and
1490 MIPS platforms. (It is also now more likely to work on CheneyGC
1492 * enhancement: sb-sprof can now also track and report accurate call
1494 * bug fixes: the treatment of non-standard subclasses of
1495 SB-MOP:SPECIALIZER is more correct.
1496 * incompatible change: PURIFY no longer copies the data from the
1497 dynamic space into the static and read-only spaces on platforms
1498 that use the generational garbage collector
1499 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1501 * bug fix: GC race condition occasionally resulting in crashes with
1502 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1504 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1506 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1507 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1508 * bug fix: an asynchronous interrupt could previously leave the
1509 system running with GC inhibited.
1510 * bug fix: a DECLARE form evaluated at top-level now causes an error
1511 rather than silently (or verbosely) returning NIL.
1512 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1513 result in a error being signalled due to source form lookup errors.
1514 (reported by Peter Graves)
1516 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1517 * incompatible change: removed writer methods for host-ent-name,
1518 host-ent-addresses -- changing the values did not update the DNS
1520 * minor incompatible change: changed experimental JOIN-THREAD interface
1521 * documentation: the manual now lists reader and writer methods
1522 in class slot documentation sections. (thanks to Richard M Kreuter)
1523 * documentation: unwinding from asyncronous events has been
1524 documented as unsafe.
1525 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1526 in multithreaded application code.
1527 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1528 platforms. (thanks to James Anderson for the optimization hint)
1529 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1531 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1532 variants no longer cons.
1533 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1534 their NOT- variants no longer cons.
1535 * optimization: EQUAL hash tables no longer use SXHASH for objects
1536 of all data types, but instead use an EQL hash for types for which
1537 EQUAL is the same as EQL.
1538 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1539 are significantly faster.
1540 * optimization: new STRING-OUTPUT-STREAM implementation is much
1541 faster for large outputs and conses 30% less on average.
1542 * enhancement: XREF information is now collected for references made
1543 to global variables using SYMBOL-VALUE and a constant argument.
1544 * enhancement: SIGINT now causes a specific condition
1545 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1546 * bug fix: FILE-POSITION used to signal an error in some cases where
1547 ANSI requires it to return NIL.
1548 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1549 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1550 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1552 * bug fix: bad type declaration in the CLOS implementation has
1553 been fixed. (reported by James Anderson)
1554 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1555 (thanks to Lutz Euler)
1556 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1557 required by the CLHS. (reported by Samium Gromoff)
1558 * bug fix: dead unbound variable references now signal an error.
1559 (reported by Marco Monteiro)
1560 * bug fix: / with an unused value was being deleted in safe code.
1561 (thanks to Marco Monteiro and Kevin Reid)
1562 * bug fix: number of characters that can be written onto a single
1563 line in a file is unlimited.
1564 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1565 been fixed by inhibiting interrupts for when GC is disabled.
1566 * bug fix: some interrupt safety issues with GETHASH, (SETF
1567 GETHASH), CLRHASH and REMHASH have been fixed.
1568 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1569 specifier no longer causes infinite recursion.
1570 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1571 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1572 * bug fix: an &environment argument with the correct variable information
1573 is passed to macros that are expanded during byte compilation.
1574 (reported by Samium Gromoff)
1575 * bug fix: a logic error was causing the hash function for bignums to
1576 have excessive amounts of collisions. (reported by Faré Rideau)
1577 * bug fix: modifying the contents of an array could change the return
1578 value of SXHASH on that array, which is only allowed for strings
1579 and bit vectors. (bug introduced in 0.9.16)
1580 * improvement: the x86-64/darwin port now passes all tests (except
1581 for the debugger tests) but should still be considered
1582 experimental until this is fixed.
1583 * improvement: a style-warning is signaled for CASE (etc) clauses with
1584 duplicate keys. (thanks to Kevin Reid)
1585 * improvement: macos/x86 and macos/x86-64 now use mach exception
1586 handlers for dealing with illegal instructions (for trapping and
1587 error handling) and memory protection violations (for GC).
1589 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1590 * new platform: experimental support for x86-64/darwin (MacOS).
1591 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1592 and getnameinfo sockets functions are used instead of gethostbyaddr
1593 and gethostbyname, on platforms where the newer functions are available.
1594 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1596 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1597 don't print the startup banner, but behave as if --noinform was passed
1598 as a command line argument. (thanks to Kevin Reid)
1599 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1600 * optimization: code using alien values with undeclared types is much faster.
1601 * optimization: the compiler is now able to open code SEARCH in more cases.
1602 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1603 * bug fix: using standardized COMMON-LISP special variables as loop
1604 variables no longer signals bogus package lock violations. (reported
1606 * bug fix: declaring local loop variables to be of a range-limited type
1607 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1608 (reported by Andras Simon)
1609 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1610 bugs remain on x86-64.)
1611 * bug fix: the #= and ## reader macros now interact reasonably with
1612 funcallable instances.
1613 * bug fix: type-checks for function arguments were compiled using the
1614 compiler policy settings of the wrong lexical environment (in 1.0.2
1616 * bug fix: SHADOW accepts characters as string designators, as required
1617 by the spec (thanks to Eric Marsden)
1618 * bug fix: fixed GC safety issues when foreign functions are called with
1619 non-base strings as arguments
1620 * bug fix: more consistent error output for fatal-compiler-warnings, like
1622 * bug fix: functions with proper names were showing up as NIL in
1623 backtraces (reported by Edi Weitz, regression in 1.0.2)
1625 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1626 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1627 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1628 produce more efficient code on the x86 if the compiler can determine
1629 that (+ INDEX <constant>) does not require a bounds check and FOO
1630 has an element type at least 8 bits wide.
1631 * bug fix: references to undefined variables are handled the same way
1632 in toplevel forms as in the normal compiler
1633 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1635 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1636 (thanks to Jon Buller)
1637 * improvement: faster compilation times for complex functions
1638 * improvement: added readlink support to SB-POSIX (thanks to Richard
1641 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1642 * improvement: experimental support for mach exception handling on
1643 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1645 * improvement: support for GBK external format.
1646 (thanks to Chun Tian (binghe))
1647 * improvement: the debugger now displays variables that have been closed
1648 over, in code compiled with (DEBUG 2) or higher
1649 * improvement: support for executable cores on NetBSD (thanks to
1651 * new feature: added a RESTART-FRAME debugger command
1652 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1653 be used to provide an implementation for FILE-POSITION on Gray streams
1654 (thanks to Eric Marsden)
1655 * new feature: add syslog, openlog and closelog support to SB-POSIX
1656 (thanks to Richard Kreuter)
1657 * optimization: the function call overhead in code compiled with
1658 a high DEBUG optimization setting is significantly
1659 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1660 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1661 (thanks to Tony Martinez)
1662 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1663 evaluated once (reported by Kevin Reid)
1664 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1665 works again (thanks to Kilian Sprotte)
1666 * bug fix: an error is signaled for tagbodies with duplicate tags
1667 (thanks to Stephen Wilson)
1668 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1669 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1670 stack frames from alien callbacks.
1671 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1672 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1673 65k pages (thanks to David Woodhouse)
1674 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1676 changes in sbcl-1.0.1 relative to sbcl-1.0:
1677 * new platform: FreeBSD/x86-64, including support for threading.
1678 * new feature: the compiler stores cross-referencing information
1679 about function calls (who-calls), macroexpansion (who-macroexpands)
1680 and special variables (who-binds, who-sets, who-references) for code
1681 compiled with (< SPACE 3). This information is available through the
1682 sb-introspect contrib.
1683 * new feature: users may subclass SEQUENCE, and have instances of
1684 these classes interoperate with standard Common Lisp functions if
1685 a number of methods are defined. (This feature is experimental
1686 and the interface subject to change based on feedback from SBCL
1687 users and the general community)
1688 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1689 x86/x86-64, rather than the previous fixed depth of 8
1690 * improvement: another pthread back-end of mutex "pthread-futex".
1691 * bug fix: non-ascii command-line arguments are processed correctly
1692 (thanks to Yaroslav Kavenchuk)
1693 * bug fix: non-required arguments were not passed correctly when a method
1694 defined using DEFMETHOD was called from a mop-generated method using
1695 CALL-NEXT-METHOD (reported by Pascal Costanza)
1696 * bug fix: recursion is now permitted in accessors through
1697 SLOT-UNBOUND. (reported by Pascal Costanza)
1698 * bug fix: an error was signaled at startup if the HOME environment
1699 variable was defined, but had an empty value (reported by Peter Van Eynde)
1700 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1701 signal a PROGRAM-ERROR, not a BUG.
1702 * bug fix: SB-POSIX:READDIR works when built with large file support.
1703 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1705 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1706 for better automatic indentation support. (thanks to Matt Pillsbury)
1707 * optimization: loading generic functions no longer takes O(n^2) time,
1708 proportional to the amount of methods in the generic function
1709 (reported by Todd Sabin and Jeremy Brown)
1710 * optimization: the FIND and POSITION family of sequence functions
1711 are significantly faster on arrays whose element types have been
1713 * improvements to the Windows port:
1714 ** Intermittent heap corruption problems have been fixed. (thanks
1715 to Alastair Bridgewater)
1716 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1718 ** Lisp is able to unwind foreign exception frames from alien
1719 callbacks. (thanks to Alastair Bridgewater)
1721 changes in sbcl-1.0 relative to sbcl-0.9.18:
1722 * improvement: experimental support for threading on FreeBSD/x86.
1723 (thanks to NIIMI Satoshi)
1724 * improvement: runtime option --dynamic-space-size can be used
1725 to set the size of the dynamic space reserved on startup.
1726 * improvement: floating point modes in effect are now saved in
1727 core, and restored on startup.
1728 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1729 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1730 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1731 threads are not running after *SAVE-HOOKS* have run.
1732 * improvement: writes to CLOS instance slots are type-checked in code
1733 compiled with (SAFETY 3)
1734 * improvement: floating-point exception handling on FreeBSD (thanks to
1736 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1737 (thanks to Zach Beane)
1738 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1740 * improvement: added support for the Shift-JIS external format.
1741 (contributed by NIIMI Satoshi)
1742 * improvement: callbacks are supported on Linux/PPC. (thanks to
1744 * bug fix: compiler bug triggered by a (non-standard) VALUES
1745 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1746 * bug fix: file compiler no longer confuses validated and already
1747 dumped structurres. (reported by Kaersten Poeck)
1748 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1749 fill-pointer signals a type-error as required. (thanks to
1751 * bug fix: disassemly of funcallable instances works.
1752 * bug fix: single stepping on PPC.
1753 * bug fix: fix thread-safety problems in the type system (generally
1754 manifesting as nonsensical errors like "STRING is a bad type specifier
1755 for sequences" or "The value 1 is not of type FIXNUM")
1756 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1757 (reported by Josip Gracin)
1758 * bug fix: an error is signaled for attempts to displace arrays with
1759 incompatible element types (thanks to Mario Mommer)
1760 * bug fix: more correct handling of wide characters in debug info
1761 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1762 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1763 and don't cause extra consing
1764 * optimization: MAP and MAP-INTO are significantly faster on vectors
1765 whose elements types have been declared.
1766 * Improvements to SB-SPROF:
1767 ** Support for allocation profiling
1768 ** Reduced profiling overhead, especially for long profiling runs
1769 * Improvements to the Windows port:
1770 ** floating point exceptions are now reported correctly.
1771 ** stack exhaustion detection works partially.
1772 ** more accurate GET-INTERNAL-REAL-TIME.
1773 ** better RUN-PROGRAM behaviour in case of errors in the child
1775 ** PROBE-FILE now simplifies pathnames correctly.
1776 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1777 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1778 1st 1970 (although time timezone data will be unreliable).
1779 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1781 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1782 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1783 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1785 * bug fix: two potential GC deadlocks affecting threaded builds.
1786 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1787 returns T (reported by Anton Kazennikov)
1788 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1789 with non-variable places
1790 * bug fix: remove a race condition in the setting of
1791 funcallable-instance functions, this should make threaded CLOS
1792 code more stable against memory faults.
1793 * bug fix: corruption of specials when unbinding is interrupted by an
1794 asynchronous unwind (reported by Hannu Koivisto)
1795 * improvement: the debugger will now also display local variables that
1796 are only used once, for code compiled with a DEBUG optimization quality
1799 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1800 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1801 * incompatible change: External-format support for FFI calls. The
1802 SB-ALIEN:C-STRING no longer implies an ASCII
1803 external-format. Instead the string is subject to external-format
1804 conversion. Additionally return values of type SB-ALIEN:C-STRING
1805 are by default of type (SIMPLE-ARRAY CHARACTER), not
1806 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1807 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1808 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1809 * incompatible change: SB-EXT package no longer contains the
1810 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1811 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1813 * incompatible change: the single-stepper is no longer available
1814 on Alpha, Mips and Sparc platforms.
1815 * minor incompatible change: the direct superclasses of
1816 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1817 not (STANDARD-OBJECT FUNCTION). This makes the
1818 class-precedence-lists of GENERIC-FUNCTION and
1819 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1821 * minor incompatible change: the default stream external format on
1822 non-unicode SBCL is no longer detected from the locale, but is always
1824 * new feature: Add a version of evaluator that uses an interpreter instead
1825 of the compiler. EVAL still uses the compiler by default, to switch it
1826 to use the interpreter, set the value of the variable
1827 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1828 * minor incompatible change: the single-stepper REPL has been merged
1829 with the normal debugger (see the "Stepping" heading of the debugger help
1830 for more details). The debugger command STEP will no longer switch
1831 to the single-stepper REPL.
1832 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1833 for a type now works.
1834 * bug fix: loading of default sysinit file works. (thanks to Leonid
1836 * bug fix: better detection of circularities in the file-compiler.
1837 (reported by Marco Monteiro)
1838 * bug fix: the CL pathname functions now work with files that have
1839 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1840 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1841 systems with Unix98 pty semantics.
1842 * bug fix: ASDF-INSTALL will now work with bsd tar.
1843 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1845 * bug fix: timers expiring in dead threads no longer cause a
1846 type-error (reported by Paul "Nonny Mouse").
1847 * bug fix: thanks to more lightweight single-stepper instrumentation,
1848 code compiled with (DEBUG 3) will compile and execute significantly faster,
1849 and will have more accurate type-inferencing than before
1850 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1851 whose bindings are modified
1852 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1853 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1854 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1855 CL:SOFTWARE-VERSION with proper version
1857 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1858 * feature: implemented the READER-METHOD-CLASS and
1859 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1860 as specified by AMOP.
1861 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1863 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1864 (thanks to Lutz Euler)
1865 * optimization: hashing of general arrays and vectors has been
1866 improved. (reported by Any Fingerhut)
1867 * enhancement: SB-INTROSPECT is now able to find definitions of
1868 profiled functions. (thanks to Troels Henriksen)
1869 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1870 as well, allowing compiler-macros for SETF-functions to expand.
1871 * enhancement: step-instrumentation no longer wraps known
1872 single-value functions with multiple-value context, allowing
1873 better type inference.
1874 * fixed bug #337: use of MAKE-METHOD in method combination now works
1875 even in the presence of user-defined method classes. (reported by
1876 Bruno Haible and Pascal Costanza)
1877 * fixed bug #339(c): if there are applicable methods not part of any
1878 long-form method-combination group, call INVALID-METHOD-ERROR.
1879 (reported by Bruno Haible)
1880 * fixed bug #361: the :FUNCTION initarg in the protocol for
1881 initialization of methods can now be used to override
1882 internally-produced optimized functions. (reported by Bruno
1884 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1885 system-provided lambda expression no longer cause warnings about
1886 unbound #:|pv-table| symbols.
1887 * bug fix: improved the handling of type declarations and the
1888 detection of violations for keyword arguments with non-constant
1890 * bug fix: potentially erronous calls to PATHNAME and
1891 MERGE-PATHNAMES were being flushed in some cases.
1892 (reported by Richard Kreuter)
1893 * bug fix: compiled calls to TYPEP were mishandling obsolete
1894 instances. (reported by James Bielman and Attila Lendvai)
1895 * bug fix: format strings with ~> without matching ~< no longer
1896 trigger an AVER, but signal an understandable error instead.
1897 (reported by Antonio Martinez)
1898 * bug fix: specifying an output-file without a pathname-type for
1899 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1900 of input-file instead of "fasl". (reported by Robert Dodier)
1901 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1902 (reported by James Y Knight).
1903 * bug fix: compiler-macros-function did not consider the environment
1904 argument for shadowing by local functions.
1905 * bug fix: compiler-macros expansion was inhibited by local INLINE
1907 * bug fix: inline expansions of known functions were subject to
1908 step-instrumentation in high debug policies, leading to problems
1909 with type-inference.
1910 * bug fix: compiler failed to differentiate between different CONS
1911 types in some cases.
1912 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1913 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1914 * bug fix: #368: incorrect use of expressed vs. upgraded array
1916 * bug fix: #306a: more precise unions of array types.
1917 * thread-safety improvements:
1918 ** CONDITION-WAIT could return early on Linux, if the thread was
1919 interrupted and subsequently continued with SIGCONT.
1920 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1922 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1923 * added support for the ucs-2 external format. (contributed by Ivan
1925 * minor incompatible change: pretty printing of objects of type
1926 (cons symbol) is, in the default pprint-dispatch-table, now
1927 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1929 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1930 called later in a class's lifetime, possibly as late as when the
1931 first instance of the class is created. Previously,
1932 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1933 class became finalizeable.
1934 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1935 for multibyte external-format streams. (thanks to "vbzoli")
1936 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1937 with :ALLOCATION :CLASS inherited from superclasses of the
1939 * fixed bug: anonymous classes can now be created using the :NAME
1940 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1941 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1942 * fixed bug: core-files saved with :EXECUTABLE T can again be
1943 executed when SBCL_HOME isn't set. (reported by James Knight)
1944 * fixed bug: toplevel LOCALLY forms with declarations could
1945 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1946 * fixed bug: printing from several different threads using different
1947 values of *print-case* could cause invalid output, due to
1948 some internal special variables of the printer not being bound
1949 thread-locally (reported by Max Mikhanosha)
1950 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1951 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1952 (reported by Pascal Costanza)
1953 * fixed bug: FINALIZE-INHERITANCE is called from
1954 REINITIALIZE-INSTANCE on classes when the class has previously
1955 been finalized, as required by AMOP.
1956 * minor code generation optimizations:
1957 ** better register allocation in CLOS dispatching functions
1958 ** overflow detection when coercing signed bytes to fixnums on x86-64
1959 ** is now implemented with one IMUL instruction instead of three shifts
1960 ** more efficient bit-vector access on x86 and x86-64
1961 ** more efficient access to raw structure slots on x86 and x86-64
1962 * fixed some bugs revealed by Paul Dietz' test suite:
1963 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1964 return its argument.
1966 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1967 * feature: thread support on Solaris/x86, and experimental thread support
1969 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1971 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1972 default method for SLOT-UNBOUND.
1973 * minor incompatible change: prevent the user from specializing the
1974 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1975 somewhat counter to the intent of the protocol, I (CSR) think, and
1976 additionally it just doesn't work in SBCL as currently
1977 implemented, thanks to optimizations (that are always valid for
1978 the other three SLOT-VALUEish functions, but not for the setter).
1979 * minor incompatible change: the :SB-LDB feature is now enabled by
1980 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1981 the low-level debugger.
1982 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1983 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1984 down to an SB-SYS:FD-STREAM, allowing direct communication in
1985 more cases. Temporary files and pipes are still used as a fallback
1987 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1988 on the non-reentrant C functions localtime(3) and gmtime(3).
1989 * bug fix: global optimization policy was not visible in LOCALLY and
1991 * bug fix: class objects can be used as specializers in methods.
1992 (reported by Pascal Costanza)
1993 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1994 with a type error. (reported by blitz_ on #lisp)
1995 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1996 failed with a type error. (reported by Pascal Bourguignon)
1997 * bug fix: merging pathnames against defaults with :DIRECTORY
1998 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1999 (reported by James Y Knight)
2000 * bug fix: saving large (>2GB) cores on x86-64 now works
2001 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2002 constant index and a (simple-array (signed-byte 32)) array
2003 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2004 error (patch by Robert J. Macomber)
2005 * feature: TIME now displays the amount of run-time spent in GC
2006 * bug fix: The debugger now does a better job of respecting
2007 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2008 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2009 workaround for bug 403.)
2010 * bug fix: floating point exception handling now works on FreeBSD
2011 (thanks to NIIMI Satoshi)
2012 * fixed some bugs revealed by Paul Dietz' test suite:
2013 ** MISC.641: LET-conversion were not supposed to work in late
2015 * improvements to the Win32/x86 port:
2016 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2017 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2019 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2020 * new feature: source path information is generated for macro-expansion
2021 errors for use in IDE's like Slime (thanks to Helmut Eller)
2022 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2023 * bug fix: compiler does not loop forever on an invalid type in
2025 * improvement: compilation of most CLOS applications is significantly
2027 * optimization: added a limited bytecode compiler for simple toplevel
2028 forms, speeding up compilation and FASL loading
2029 * bug fix: the statistical profiler now properly distinguishes anonymous
2032 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2033 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2034 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2035 into subclasses of the finalized class. Now user calls to
2036 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2037 system return before any subclasses are finalized.
2038 * minor incompatible change: The reader no longer ignores errors
2039 regarding non-existent packages in #+ and #- feature tests.
2040 * new feature: command line options --no-sysinit, --no-userinit to
2041 inhibit loading the corresponding init files
2042 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2043 for sending data through UDP sockets (thanks to François-René Rideau)
2044 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2045 error is signalled instead (thanks to François-René Rideau)
2046 * minor incompatible change: Error signalling behaviour of lexical
2047 operations violating package locks has changed slightly. Refer to
2048 documentation on package locks for details.
2049 * enhancement: EVAL can process IF-expressions without resorting to the
2051 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2052 constant-folded properly due to missing out-of-line functions.
2053 (reported by Mika Pihlajamäki)
2054 * bug fix: LISTEN sometimes returned T even in cases where no data was
2055 immediately available from the stream
2056 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2057 were reversed. (reported by Levente Mészáros)
2058 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2059 when given a vector displaced to an adjustable array. (reported
2061 * bug fix: derivation of float boundaries from numbers outside the
2062 appropriate float range (reported by John Wiseman)
2063 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2065 * bug fix: precomputing cache entries for generic functions with
2066 some subclasses of specializers as yet invalid does not attempt to
2067 fill a cache line with a negative offset. (reported by Levente
2069 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2070 allow condition class objects as arguments to DOCUMENTATION and
2071 (SETF DOCUMENTATION); only find and set documentation for
2072 structure names for the STRUCTURE doc-type. (suggested by Gary
2074 * improvements to the Win32/x86 port:
2075 ** (user-homedir-pathname) and default initialization file
2076 locations now know about the user's "Documents and Settings"
2077 directory (thanks to Yaroslav Kavenchuk)
2078 ** run-program is implemented (thanks to Mike Thomas)
2079 ** sockets support (thanks to Timothy Ritchey)
2080 ** better backtrace support (thanks to Alastair Bridgewater)
2081 ** sb-grovel supported
2082 ** asdf-install and sb-posix work somewhat
2083 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2084 * improvements to the Solaris/x86 port:
2085 ** works on Solaris 11/Solaris Express
2086 ** floating-point exception handling support
2087 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2088 * fixed some bugs revealed by Paul Dietz' test suite:
2089 ** REMOVE-METHOD returns its generic function argument even when
2090 the method is not one of the generic functions' methods.
2091 ** objects declared as MEMBER types can be admissible arguments to
2092 structure accessors.
2093 ** printing characters should simply be printed by the FORMAT ~:C
2095 ** compiler failure when compiling functions with hairy constant
2096 defaults for optional parameters.
2097 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2098 function, which is already optimized.
2100 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2101 * new platform: experimental support for SBCL x86/Darwin, including
2102 MacOS X 10.4.5 on Intel.
2103 * new feature: Unicode character names are now known to the system
2104 (through CHAR-NAME and NAME-CHAR).
2105 * new feature: the filesystem location of SBCL's core file is
2106 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2107 * minor incompatible change: the contrib modules SB-POSIX and
2108 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2109 this change is to make it easier to distribute
2110 location-independent binaries.
2111 * bug fix: as implied by AMOP, standardized classes no longer have
2112 slots named by external symbols of public packages. (reported by
2114 * optimization: calling functions via constant symbols -- as in
2115 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2116 via the function object as in (FUNCALL #'FOO).
2117 * optimization: on x86 and x86-64, the calling convention for the
2118 case of dealing with an unknown number of values has been altered
2119 to be friendlier to the prediction heuristics implemented,
2120 particularly with reference to CALL and RET pairing. (thanks to
2121 Alastair Bridgewater)
2122 * optimization: on x86, the code for access to thread-local symbol
2123 values and binding/unbinding of thread-local symbols is smaller.
2124 (thanks to Alastair Bridgewater)
2125 * enhancement: CONSTANTP is now able to determine constantness of
2126 more complex forms, including calls to constant-foldable standardized
2127 functions and some special forms beyond QUOTE.
2128 * fixed bug: occasional GC crashes on Solaris/x86
2129 * optimization: x86-64 supports stack allocation of results of simple
2130 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2131 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2132 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2133 (thanks to James Knight)
2134 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2135 by the standard (thanks to Stephen Compall)
2137 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2138 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2139 be used for bundling the runtime and the core file into one
2140 executable binary. This feature is not currently supported on all SBCL
2141 platforms. (thanks to James Bielman and NIIMI Satoshi)
2142 * new feature: a generational or ephemeral garbage collector is now
2143 the default on the PowerPC platform (both Linux and Darwin). The
2144 old Cheney (stop and copy) collector is a build-time option.
2145 (thanks to Cyrus Harmon, after Raymond Toy)
2146 * minor incompatible change: the method by which SBCL finds its
2147 contributed modules has changed; it no longer relies on symbolic
2148 links from an $SBCL_HOME/systems directory, but searches directly
2149 in the subdirectories of $SBCL_HOME.
2150 * enhancement: the dynamic heap size on the Linux/PPC platform is
2151 markedly larger, even using the older Cheney garbage collector.
2152 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2153 certain complicated string types. (reported by Gary King)
2154 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2155 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2156 * fixed bug: DOCUMENTATION on structures no longer signals an
2157 error if no structure type of the right name exists. (reported by
2159 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2160 applicable non-standard primary or :AROUND method on
2161 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2162 no longer cause unbound variable errors. (reported by Kevin Reid)
2163 * fixed bug: metacircle resolution in cases where methods have slots
2164 added before the slots from STANDARD-METHOD. (reported by Jean
2166 * fixed bug: the Power PC assembly code for calling into lisp
2167 sometimes computed its return address wrongly (depending on the
2168 15th bit of the address, fixed at link time). This used to
2169 manifest itself in a segmentation violation while building PCL.
2170 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2171 many others over the years)
2172 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2173 the stack pointer (treated as a signed integer) is negative.
2174 (thanks to Peter van Eynde)
2176 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2177 * new platform: experimental support for the Windows operating
2178 system has been added. (thanks to Alastair Bridgewater)
2179 * fixed several bugs in and robustified the PPC FFI (including
2180 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2181 * bug fix: allow non-simple string symbol names (reported by Paul
2183 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2185 * bug fix: saving a core corrupted callbacks on x86/x86-64
2186 * bug fix: closed a loophole in metacircularity detection and
2187 grounding in the PCL implementation of CLOS.
2188 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2189 (reported by tomppa on #lisp)
2190 * bug fix: clear the direction flag on Lisp -> C transitions, as
2191 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2192 (reported by Andrej Grozin and Hendrik Maryns)
2193 * optimization: major improvements to GC efficiency on GENCGC platforms
2194 * optimization: faster implementation of EQUAL
2195 * optimization: emit more efficient opcodes for some common
2196 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2197 * optimization: several other minor code-generation improvements on x86-64
2198 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2200 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2201 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2202 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2203 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2204 by ANSI as a generic function, and for consistency (SETF
2205 GENERIC-FUNCTION-NAME) is treated likewise.
2206 * fixed bug #233.b: make constraint propagation notice when a variable
2207 value is changed after it is referenced but before it is used
2208 * fixed bug #296: no more arbitrary behaviour from filenames with
2209 odd characters as --load arguments. (reported by Adam Warner)
2210 * fixed bug #390: :CHARACTER-SET pathname components now work as
2211 expected. (reported by Tim Daly Jr)
2212 * fixed bug #391: complicated :TYPE intersections in slot
2213 definitions no longer cause an error in PCL internals.
2214 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2215 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2216 returning the number of octets which would be written to the
2217 file-stream. (thanks to Robert J. Macomber)
2218 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2219 arguments to the internal stream functions. (thanks to David
2221 * bug fix: stack exhaustion is now handled on the x86/SunOS
2222 platform. (thanks to Daisuke Homma)
2223 * bug fix: more accurate ROOM results on GENCGC platforms
2224 * optimization: improved type inference for arithmetic-for
2225 index variables in LOOP
2226 * optimization: faster floating-point SQRT on x86-64
2227 * fixed some bugs revealed by Paul Dietz' test suite:
2228 ** DOCUMENTATION returns NIL instead of "" for method combinations
2229 that don't have a docstring
2231 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2232 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2233 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2234 therefore are not customizeable by user code (as seems to be at
2235 least permitted and maybe required by AMOP). As a consolation,
2236 however, the SBCL implementation of these functions now calls
2237 REINITIALIZE-INSTANCE as specified by AMOP.
2238 * bug fix: slot-definition documentation is propagated as per ANSI
2239 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2240 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2241 argument, as do eslotd initialization methods. (from Pascal
2242 Costanza's "Closer" project)
2243 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2244 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2246 * bug fix: it is now possible to have more than one subclass of
2247 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2248 (reported by Bruno Haible, Pascal Costanza and others)
2249 * bug fix: the dependent update protocol now works for generic
2250 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2251 and Pascal Costanza)
2252 * bug fix: condition-class instances corresponding to
2253 DEFINE-CONDITION forms are now created eagerly. (reported by
2254 Kalle Olavi Niemitalo on comp.lang.lisp)
2255 * bug fix: floating point printing is more accurate in some
2256 circumstances. (thanks to Simon Alexander)
2257 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2258 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2259 * bug fix: callbacks on OS X now preserve stack-alignment.
2260 (thanks to Cyrus Harmon)
2261 * enhancement: the x86-64 disassembler is much better at
2262 disassembling SSE instructions. (thanks to Lutz Euler)
2263 * enhancement: CHECK-TYPE on a variable now allows type-inference
2264 (thanks to Vincent Arkesteijn)
2265 * optimization: improved performance of EUC-JP external format.
2266 (thanks to NIIMI Satoshi)
2267 * optimization: performance improvements to IO on file streams of
2268 :ELEMENT-TYPE CHARACTER
2269 * optimization: much faster memory allocation on x86-64
2270 * optimization: faster garbage collections (latency and throughput)
2272 * optimization: faster bignum subtraction and division on x86 and x86-64
2273 (thanks to Lutz Euler)
2274 * optimization: more accurate type-inference for loops that use a
2275 floating point index variable or a negative step.
2277 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2278 * bug fix: add a workaround to SBCL looping infinitely at startup on
2279 Linux kernels with apparently buggy implementations of personality().
2280 (thanks to Svein Ove Aas)
2281 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2282 (thanks to David Lichteblau)
2283 * bug fix: local bindings shadow global symbol macros for
2284 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2285 * optimization: non-open coded uses of numeric comparison operators
2286 (e.g. >) no longer cons when called with more than one parameter
2287 on platforms supporting dynamic-extent allocation.
2288 * enhancement: saving cores with foreign code loaded is now supported
2289 on MIPS/Linux in addition to the previously supported platforms.
2290 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2291 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2292 * bug fix: division by zero in sb-sprof when no samples were collected
2293 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2294 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2295 (thanks to Alexander Kjeldaas)
2296 * new feature: ignoring the return values of destructive functions
2297 like NREVERSE signals a compile-time style-warning.
2298 (thanks to Kevin Reid)
2299 * new feature: the alignment of alien structure fields can be
2300 explicitly specified. (thanks to Cyrus Harmon)
2301 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2302 and dump core on SIGQUIT
2304 ** incompatible change: threads do not inherit values of specials
2305 from their parents (see manual)
2306 ** bug fix: threads stacks belonging to dead threads are freed by the
2307 next exiting thread, no need to gc to collect thread stacks anymore
2308 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2309 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2310 ** bug fix: dynamic variable and thread start related gc lossage
2311 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2313 * fixed some bugs revealed by Paul Dietz' test suite:
2314 ** SUBTYPEP is slightly more accurate on heinously complicated
2315 CONS types where some of the members have uncertain (in the
2316 NIL, NIL sense) type relationships to each other.
2318 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2319 no longer purified unless :PURIFY T is explicitly specified.
2320 ** Non-purified cores are significantly smaller than before
2322 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2323 * new feature: timers based on Zach Beane's excellent timer package
2324 * added support for the following external formats: koi8-u,
2325 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2326 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2327 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2328 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2329 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2330 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2331 * incompatible change: a threaded SBCL will no longer revert to
2332 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2333 * bug fix: interrupts are disabled until startup is complete; no
2334 more sigsegvs when receiving a signal to soon
2335 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2337 * bug fix: add a workaround for the memory randomization features in
2338 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2339 workaround will only be in effect on systems with the proc filesystem
2341 * bug fix: printing objects of type HASH-TABLE signals a
2342 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2344 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2345 have been running for over 50 days. (reported by Gilbert Baumann)
2346 * bug fix: the logic for getting names of functions gets less
2347 confused when confronded with alternate-metaclass
2348 funcallable-instances. (reported by Cyrus Harmon)
2349 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2350 consistent, even on internal alternate-metaclass objects.
2351 * bug fix: flush closure information collected by physical
2352 environment analysis prepass before the main pass. (bug reported
2354 * bug fix: compiler pack phase does not modify a hashtable, which is
2355 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2356 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2357 may be expanded. (reported by Alexander <malishev> on c.l.l)
2358 * bug fix: no more style-warnings when compiling code using LAST
2359 under high-SPEED low-SPACE settings. (reported by David Wallin
2361 * fixed some incompatibilities between SBCL's MOP and the MOP
2363 ** the METAOBJECT class is now implemented;
2364 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2365 STANDARD-OBJECT, as required;
2366 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2367 now compatible (as required by VALIDATE-SUPERCLASS); there
2368 remains a consistency requirement over the presence or absence
2369 of the FUNCTION class in the superclass list of finalized
2370 classes; see the manual for more details;
2371 ** the :AROUND method for COMPUTE-SLOTS on
2372 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2373 requested slot ordering.
2375 ** bug fix: parent thread now can be gc'ed even with a live
2377 ** bug fix: binding a special with PROGV to no value is not
2378 the same as that symbol not having been bound (thanks to
2380 ** bug fix: binding specials is thread safe (thanks to
2382 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2383 and SB-SPROF do not die with 'no handler for signal XX in
2384 interrupt_handle_now(..)' anymore
2385 ** bug fix: WITH-TIMEOUT works with multiple running threads
2386 * fixed some bugs revealed by Paul Dietz' test suite:
2387 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2388 the :method-class keyword argument.
2390 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2391 * new port: the Solaris operating system on x86 processors is now
2392 mostly supported, though some rough edges in the environment
2393 remain. (thanks to Daisuke Homma)
2394 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2395 space for its heap. (thanks to Thiemo Seufer)
2396 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2397 closures. (thanks to Thiemo Seufer)
2398 * minor incompatible change: eof selects abort in the debugger.
2399 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2400 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2402 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2403 deprecated, and will go away in a future revision of SBCL.
2404 * minor incompatible change: GC-ON and GC-OFF are no longer
2405 implemented with a counter, it does not matter how many times gc
2406 is switched on or off
2407 * bug fix: discriminating functions for generic function classes
2408 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2409 make invalid assumptions about method precedence order. (reported
2411 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2412 platforms. (thanks to Thiemo Seufer)
2413 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2414 * bug fix: correct pathname printing with printer escaping is on.
2415 (thanks to Kevin Reid)
2416 * bug fix: complex VOP definitions in "user-space" no longer trigger
2417 package locks. (reported by Zach Beane)
2418 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2419 for funcallable-instance functions, and is no different from
2421 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2422 characters in the current readtable. (reported by Nicholas Neuss)
2423 * bug fix: SUBTYPEP on various CONS types returns more a more
2424 accurate acknowledgment of its certainty.
2425 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2426 lists in some cases. This partially fixes bug 384.
2427 * flush all standard streams before prompting in the REPL and the
2429 * bug fix: signal handling and triggering gc do not conflict
2430 directly anymore, in particular a high frequency sb-sprof does
2431 not prevent gc from running
2432 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2433 approximation for timezone and DST information between the
2434 universal time epoch and the smallest negative 32-bit time_t.
2435 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2436 year 1899 so long as the encoded time is non-negative.
2437 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2438 the correct answer for non-constant rotate amounts when performing
2439 an inline 32-bit rotation.
2441 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2442 there is only one thread in the session
2443 ** bug fix: memory leak for streams created in one thread and
2444 written to in another
2445 ** bug fix: lockup when compiled with gcc4
2446 ** bug fix: race that allows the gc to be triggered when gc is
2448 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2449 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2451 ** bug fix: finished threads are gc'ed properly
2452 * fixed some bugs revealed by Paul Dietz' test suite:
2453 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2454 has arguments with a different set of applicable methods from
2455 the orignal arguments.
2456 ** The type error thrown by MAP now has a correct expected-type
2458 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2459 name a compiled function.
2460 ** Three MISC tests where a large bignum was improperly coerced to
2461 a float that couldn't represent that bignum during type
2462 derivation were fixed.
2463 ** SUBTYPEP can now handle types involving the negation of a
2464 list-form FUNCTION type.
2465 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2466 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2467 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2469 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2470 * New feature: Experimental support for bivalent streams: streams
2471 opened with :element-type :default now allow character and binary
2472 (unsigned-byte 8) I/O
2473 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2474 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2476 * bug fix: no more highly sporadic "couldn't check whether ~S is
2477 readable" when reading a stream and an interrupt hits in the middle
2478 of a select system call
2479 * compiler better recognizes complex arrays (reported by Eduardo
2481 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2482 for variables on SBCL built with linkage-tables. (reported by Luis
2484 * various error reporting improvements.
2485 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2486 (Thanks to Thiemo Seufer)
2487 * bug fix: nested reader invokations work correctly
2488 * bug fix: it is possible to have simultaneous references to foreign
2489 code and foreign data with the same name.
2491 ** added x86-64 support
2492 ** incompatible change: the threading api now works with thread
2493 objects instead of thread ids
2494 ** bug fix: threads are protected from signals and interruption when
2495 starting up or going down
2496 ** bug fix: a race where an exiting thread could lose its stack to gc
2497 ** bug fix: don't halt on infinite error in threads if possible
2498 ** fixed numerous gc deadlocks introduced in the pthread merge
2499 ** bug fix: fixed thread safety issues in read and print
2500 ** bug fix: debugger doesn't hang on session lock if interrupted at
2501 an inappropriate moment
2502 ** bug fix: run-program is now thread safe(r)
2503 ** bug fix: inner with-recursive-lock no longer releases the mutex
2504 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2505 * fixed some bugs revealed by Paul Dietz' test suite:
2506 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2507 EXPECTED-TYPE slots filled.
2508 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2510 ** MAKE-CONDITION accepts classes as type-designators.
2511 ** COMPILE may never return NIL.
2512 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2513 range before calling Unix time functions
2515 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2516 * numerous signal handling fixes to increase stability
2517 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2518 * minor incompatible change: we now correctly canonize default
2519 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2520 as per the MOP, rather than the historical (INITARG INITFUNCTION
2521 INITFORM). (reported by Bruno Haible)
2522 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2523 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2524 for more information.
2525 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2526 pathname is a directory pathname.
2527 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2528 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2530 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2531 :METACLASS argument in addition to a class name. (reported by
2532 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2533 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2534 (reported by Bruno Haible; patch from Gerd Moellmann)
2535 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2537 * bug fix: more cleanups to the floating point exception handling on
2538 x86-64 (thanks to James Knight)
2539 * bug fix: the compiler does not try to constant fold calls of
2540 COERCE and BIT-* functions when they return freshly constructed
2541 objects. (reported by Nikodemus Siivola and Paul Dietz)
2542 * optimization: improved the MIPS versions of generic (in the
2543 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2544 * optimization: direct conversion of (unsigned-byte 32) to floats on
2545 the PowerPC platform.
2546 * optimization: structure instances with raw slots now use less
2547 memory, and probably show better memory locality. (thanks to
2549 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2550 are treated as requests for stack allocation on the x86-64,
2551 Alpha-32, PPC and SPARC platforms.
2552 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2553 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2554 (thanks to Tony Martinez)
2556 ** gcing a dead thread can no longer lead to lockups
2557 ** threads block signals until they are set up properly
2558 ** errno is no longer shared by threads
2559 ** interrupt-thread restores the eflags register on x86
2560 ** fixed some lockups due to gc/thread interaction
2561 * fixed some bugs revealed by Paul Dietz' test suite:
2562 ** invalid dotted lists no longer raise a read error when
2563 *READ-SUPPRESS* is T
2564 ** signal an error if a symbol that names a declaration is used
2565 as the name of a type, or vice versa
2566 ** allow using the (declare (typespec var*)) abbreviation for
2567 (declare (type typespec var*)) with all type specifiers
2568 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2569 ** always return NIL from PPRINT-POP when OBJECT is NIL
2570 ** don't signal errors when pretty-printing malformed LABELS,
2571 FLET or MACROLET forms
2572 ** declarations in a DOLIST body are also in scope for the
2574 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2576 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2579 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2580 * fixed cross-compiler leakages that prevented building a 32-bit
2581 target with a 64-bit host compiler.
2582 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2583 opened with :IF-EXISTS :OVERWRITE.
2584 * fixed bug 281: error for an invalid qualifier in a short-form method
2585 combination method is not signalled until the faulty method is called.
2586 * bug fix: iteration variable type inferrer failed to deal with open
2587 intervals. (reported by Alan Shields)
2588 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2589 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2590 or more runtime options were provided to the sbcl binary.
2591 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2592 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2593 * optimization: there's now a fast-path for fixnum arguments in the
2594 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2595 * optimization: the code generated on x86-64 is more compact thanks
2596 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2597 * bug fix: floating-point exception handling now partly works on
2598 x86-64. (Thanks to James Knight)
2599 * improvement to the MIPS backend from Thiemo Seufer: C-style
2600 64-bit long long arguments and return values to alien functions
2602 * fixed some bugs revealed by Paul Dietz' test suite:
2603 ** the type-error signalled from WARN has a filled-in DATUM slot.
2604 ** the type-error required when a stream is not associated with
2605 a file has the stream as its datum.
2606 ** type-errors on single-floats on x86-64 no longer have
2607 :INVALID-OBJECT as the datum
2608 ** the type-errors signalled for invalid function names now have
2609 a correct expected type
2610 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2611 for structures defined with a :TYPE. Documentation strings for
2612 typed structures are no longer immediately discarded
2613 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2614 broadcast streams and synonym streams. FILE-LENGTH now also works
2615 on broadcast streams.
2617 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2618 * incompatible change: the --noprogrammer option, deprecated since
2619 version 0.7.5, has been removed. Please use the equivalent
2620 --disable-debugger option instead.
2621 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2623 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2624 inoperational for a while now) has been completely removed.
2625 * null lexical environments are now printed as #<NULL-LEXENV>,
2626 significantly reducing the amount of clutter in typical backtraces.
2627 * documentation on weak pointers, finalization, and after GC hooks
2628 has been added to the manual.
2629 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2630 as other specialized array types, is much faster. SUBSEQ and
2631 COPY-SEQ on such arrays have also been sped up.
2632 * optimization: EQL is now more efficient when at least other argument
2633 is known to be of type (OR FIXNUM (NOT NUMBER)).
2634 * fixed bug: the runtime is now less vulnerable to changes in the
2635 size of the SBCL object on OS X, and virtual memory is reserved for
2636 all spaces that need to be at a fixed address.
2637 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2638 * fixed bug: finalizers and after GC hooks that cause consing are now
2640 * fixed bug: compiler error messages and summaries are now printed to
2641 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2642 * fixed inference of the upper bound of an iteration variable.
2643 (reported by Rajat Datta).
2644 * fixed bug 211e: calling local functions with duplicated constant
2645 keyword argument no longer causes a bogus style warning about an
2647 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2648 ftype declaration to be disregarded. (reported by Dave Roberts)
2649 * fixed bug 373: caused by erronous compilation of references to alien
2650 variables in the runtime on ppc/darwin.
2651 * fixed bug 376: CONJUGATE type deriver.
2652 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2653 (reported by Baughn on #lisp)
2654 * a cross-compiler bug on non-x86 platforms has been identified and
2655 fixed. (thanks to Bruno Haible)
2656 * improvements to the MIPS runtime code for increased stability.
2657 (thanks to Thiemo Seufer)
2658 * increased the maximimum compact environment size to allow
2659 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2660 * partial workaround for bug 135: don't name the function we're
2661 calling for hairy cases of EVAL, so as not to accumulate one environment
2662 entry per call to EVAL. (reported by Kevin Reid)
2663 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2664 * optimization: type testing for non-vector arrays should be faster.
2665 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2667 * bug fix: setting 31st element of a bit vector to zero did not work
2669 * bug fix: redefining a class definition which failed due to a
2670 previous accessor / function clash now works (but see BUGS entry
2671 #380 for more problems in this area). (thanks to Zach Beane)
2672 * the long form of DEFINE-METHOD-COMBINATION disables method group
2673 checking when given a single method group with pattern *. (thanks
2675 * on x86 compiler supports stack allocation of results of simple
2676 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2677 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2678 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2679 * fixed some bugs related to Unicode integration:
2680 ** the restarts for recovering from input and output encoding
2681 errors only appear when there is in fact such an error to
2683 * fixed some bugs revealed by Paul Dietz' test suite:
2684 ** MISC.549 and similar: late transformation of unsafe type
2685 assertions into derived types caused unexpected code
2687 ** SCALE-FLOAT type deriver is less wrong.
2688 ** type derivers for EXP, LOG and similar functions compute result
2689 types for complex arguments better.
2690 ** (MISC.563) CONJUGATE type deriver works for very restricted
2692 ** out-of-line type testers for character strings are available.
2693 ** EQUAL compiler transform understands specialness of objects
2695 ** accessing double-floats stored on the stack now works on x86-64.
2696 ** debugger internals could sometimes create invalid lispobjs,
2697 resulting in GC crashes.
2698 ** MISC.548: type check weakening can convert required type into
2700 ** initialization forms for bindings are not in scope of free special
2703 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2704 * incompatible change: thread support for non-NPTL systems has
2705 been removed - locking is buggy and unreliable. A threaded
2706 SBCL build will now warn at startup and refuse to create
2707 new threads, unless futex support is detected in the kernel
2708 * incompatible change: the top level REPL now has only an ABORT
2709 restart associated with it, not TOPLEVEL and ABORT as it used to.
2710 TOP and TOPLEVEL are now available as debugger commands for
2711 returning to the top level.
2712 * incompatible change: forms evaluated in the REPL now use the
2713 global optimization policy.
2714 * incompatible change: user- and system-initialization files are
2715 no longer processed with LOAD, but by READ and EVAL; hence the
2716 global optimization policy, startup package, readtable, etc,
2718 * The .fasl file format number has been incremented because of
2719 various incompatible changes.
2720 * internal entry point details and argument counts no longer appear
2721 in backtraces unless explicitly requested by setting
2722 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2723 * built-in and standard functions no longer have names like "top
2724 level local call to FOO".
2725 * fixed bug 32: functions defined in non-null lexical environments
2726 now have more legible printed representation
2727 * fixed bug 33: functions defined in non-null lexical environemnts
2728 are now more amenable to inspection by INSPECT.
2729 * workaround for bug 354: XEPs no longer appear in backtraces unless
2730 explicitly requested.
2731 * fixed bug: receiving the signal which results from attempting to
2732 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2733 SIGBUS on other *BSDs) on architectures where the C stack is also
2734 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2735 to debugger confusion or wild instability. (reported by Cheuksan
2737 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2738 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2739 (reported by Lutz Euler)
2740 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2741 compiled code. (reported by Paul Dietz)
2742 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2743 specialized parameter to a method to something that is not TYPEP
2744 the specializer is now possible.
2745 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2746 face of package deletion.
2747 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2748 pathname. (reported by David Tolpin on c.l.l)
2749 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2750 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2751 STRING-STREAM and FILE-STREAM, respectively.
2752 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2753 than previously; in addition, its test suite is now run on build.
2754 (thanks to Luke Gorrie)
2755 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2756 * optimization: added a immediate representation for single-floats
2758 * fixed some bugs revealed by Paul Dietz' test suite:
2759 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2760 ** attempting to create a package with a colliding nickname causes
2761 correctable errors to be signalled.
2762 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2763 ** several x86-64 backend bugs related to sign-extension of immediate
2766 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2767 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2768 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2770 * fixed loading of multiply forward-referenced layouts.
2771 (thanks to Cheuksan Wang)
2772 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2773 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2774 (see COMPILE-FILE documentation for details of :PRINT option)
2775 * fixed bugs 19 and 317: fixed-format floating point printing is
2776 more accurate. This also fixes a bug reported by Adam Warner
2777 related to the ~@F format directive.
2778 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2780 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2781 dispatch table if the from-char is a dispatch macro character.
2782 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2783 by the wordsize no longer ignore the last word. (reported by Lutz
2785 * fixed bug in type checking of dynamic-extent variables. (reported
2787 * optimization: sequence traversal functions use their freedom to
2788 coerce function designators to functions.
2789 * optimization: code with many calls to CLOS methods specialized on
2790 CLOS classes has had redundant type checks removed.
2791 * optimization: added declarations to speed up operations that access
2792 the internal character database (for example STRING-UPCASE)
2793 * optimization: comparison operations between floats and sufficiently small
2794 fixnums no longer create extra rationals
2795 * fixed some bugs related to Unicode integration:
2796 ** portions of multibyte characters at the end of buffers for
2797 character-based file input are correctly transferred to the
2798 start of the buffer at the next read.
2799 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2800 passing it through to OPEN.
2801 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2802 argument given to internal calls to OPEN.
2803 ** the built-in comment readers (introduced by character sequences
2804 ";" and "#|") are more forgiving to encoding errors; they will
2805 STYLE-WARN and then attempt to resync the stream at a character
2806 boundary. (thanks to Teemu Kalvas)
2807 * fixed some bugs in the x86-64 port:
2808 ** Negative short int return values from c-calls are sign-extended
2810 ** The stack is aligned to 16-bytes for c-calls, as required by
2811 the ABI. (thanks to Cheuksan Wang)
2812 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2813 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2814 for enums. (thanks to Vincent Arkesteijn)
2815 ** Multiple small optimizations and bugfixes for floating point
2817 * fixed some bugs revealed by Paul Dietz' test suite:
2818 ** Space, Tab, Linefeed, Return and Page have the invalid
2819 secondary constituent character trait.
2820 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2822 ** WITH-INPUT-FROM-STRING should only update the index place on
2824 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2825 works more reliably.
2826 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2827 with one-dimensional arrays with fill pointers.
2828 ** TYPE-OF failed on a complex with an integer realpart and a
2830 ** compiler failure during type inference for the code of form
2831 (IF (EQL X (THE ...)) ...) (MISC.535).
2833 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2834 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2835 platform. The port supports 61-bit fixnums, large memory spaces
2836 and reloading shared object files.
2837 * enhancement: saving cores with foreign code loaded is now
2838 supported on ppc/Darwin in addition to the previously supported
2840 * enhancement: the statistical profiler now walks deeper into the
2841 call stack for more meaningful call-graphs and accrued time
2842 reports (x86/x86-64 only). It also now reports time spent in
2844 * enhancement: it is now possible to trace most individual methods
2845 of a generic function in addition to tracing the generic function
2847 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2849 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2850 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2851 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2852 produces an error. (thanks to Vincent Arkesteijn)
2853 * bug fix: NAMESTRING on pathnames with :WILD components in their
2854 directories works correctly. (thanks to Artem V. Andreev)
2855 * fixed bug 125: compiler preserves identity of closures. (reported
2857 * bug fixed: functions with &REST arguments sometimes failed with
2858 "Undefined function" when compiled with (DEBUG 3). (reported by
2860 * bug fix: overflow during compiling of setting element of a bit
2861 vector with constant index and value. (reported by Timmy Douglas)
2862 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2863 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2864 * on x86 compiler partially supports stack allocation of dynamic-extent
2866 * GO and RETURN-FROM do not check the extent of their exit points
2867 when compiled with SAFETY 0.
2868 * fixed some bugs related to Unicode integration:
2869 ** encoding and decoding errors are now much more robustly
2870 handled; it should now be possible to recover even from invalid
2871 input or output to the terminal. (thanks to Teemu Kalvas)
2872 ** provided a first cut at implementing STRING-TO-OCTETS and
2873 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2874 ** altered the SB-MD5 contributed module slightly, changing the
2875 interface just enough for it to be supportable for builds where
2876 lisp characters are not eight bits.
2877 * fixed some bugs revealed by Paul Dietz' test suite:
2878 ** the FORMATTER-generated functions for ~V[ conditionals require
2879 the correct number of arguments.
2880 ** READ-FROM-STRING returns the mandated second value when applied
2881 to displaced strings.
2882 ** the #\Rubout and #\Backspace characters are treated as invalid
2883 constituent characters by the tokenizer.
2885 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2886 * new feature: reloading changed shared object files with
2887 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2888 * new feature: references to foreign variables and functions
2889 can now be compiled and loaded before the corresponding shared
2890 object file is loaded, as long as the foreign definitions are
2891 available at runtime.
2892 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2893 supported. (thanks to Dan Debertin)
2894 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2895 just keywords. (thanks to Vincent Arkesteijn)
2896 * fixed bug #331: structure-class instances corresponding to
2897 DEFSTRUCT forms are now created eagerly.
2898 * fixed bug #345: backtraces from calls to undefined functions work
2899 on x86 as well. Related bug #61 is now also partially fixed on x86
2900 (backtraces from throws to unknown catch tags.)
2901 * bug fix: lambda-list parsing is now stricter vrt. order and number
2902 of lambda-list keywords.
2903 * bug fix: as specified by AMOP, an error is signalled if a
2904 class-option appears multiple times in a DEFCLASS form. (reported
2906 * bug fix: RANDOM can be compiled when the compiler derives the type
2907 of its numeric argument as a disjoint set of small integers.
2908 (reported by Paul Dietz)
2909 * bug fix: starting a core saved with shared objects loaded when
2910 those objects are not available no longer causes threaded SBCL to
2911 hang. (reported by Sean Ross)
2912 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2914 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2915 argument, which must always be NIL. (reported by Kalle Niemitalo)
2916 * bug fix: printing 1.0d+23 no longer results in an error.
2917 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2918 * bug fix: structure slot setters preserve evaluation order. (thanks
2920 * fixed some bugs related to Unicode integration:
2921 ** RUN-PROGRAM can allow its child to take input from a Lisp
2922 stream. (reported by Stefan Scholl)
2923 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2924 locales. (reported by Ken Causey)
2925 * fixed some bugs revealed by Paul Dietz' test suite:
2926 ** INCF, DECF and REMF evaluate their place form as specified in
2928 ** FORMATTER expands ~{ ~} iteration directives with V or #
2929 parameters correctly.
2930 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2931 consequent uses no arguments correctly.
2932 ** the system has a partial understanding of the (COMPLEX RATIO)
2934 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2937 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2938 * new feature: a build-time option (controlled by the :SB-UNICODE
2939 keyword feature, enabled by default) for building the system with
2940 support for the entire 21-bit character space defined by the
2942 * new feature: the system now has rudimentary external-format
2943 support; the primary user-visible change at this time is that
2944 characters with the high bit set (such as lower-case-e-acute) will
2945 print correctly to a terminal in a UTF-8 environment.
2946 * minor incompatible change: BASE-CHAR no longer names a class;
2947 however, CHARACTER continues to do so, as required by ANSI.
2948 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2949 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2950 has been moved to the SB-EXT package (temporarily re-exported from
2952 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2953 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2955 * fixed bug #351: better error-handlind and reporting for malformed
2957 * fixed bug #350: bignum-printing is now more memory-efficient,
2958 allowing printing of very large bignums, eg. (expt 2 10000000).
2959 (reported by Bruno Haible)
2960 * fixed bug #302: better primitive-type selection for intersection
2962 * fixed bug #308: non-graphic characters now all have names, as
2963 required. (reported by Bruno Haible)
2964 * bug fix: redefining a class with different superclasses now correctly
2965 removes it from the direct-subclasses of its previous superclasses.
2966 (reported by David Morse)
2967 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2968 new value now works. (reported by Bruno Haible)
2969 * bug fix: correct canonicalization of multiple non-standard slot
2970 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2971 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2972 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2973 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2974 now exists, an signals an error.
2975 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2976 during macroexpansion for non-iteration variables as well. (reported
2977 by Bruno Haible for CMUCL)
2978 * bug fix: Cyclic structures and unprintable objects in compiler
2979 messages no longer cause errors. (reported by Bruno Haible)
2980 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2981 and READ-FROM-STRING all now return a primary value of NIL if
2982 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2983 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2984 (reported by Bruno Haible for CMUCL)
2985 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2986 do not designate a condition. (reported by Bruno Haible for
2988 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2989 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2990 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2991 permitting resolution in favour of any of the conflicting symbols.
2992 (reported by Bruno Haible for CMUCL)
2993 * bug fix: EQUAL compiler optimizations is less aggressive on
2994 strings which can potentially compare true despite having distinct
2995 specialized array element types.
2996 * bug fix: unit enumerations can be defined without dividing by
2997 zero. (thanks to Vincent Arkesteijn)
2998 * FORMAT compile-time argument count checking has been enhanced.
2999 (report from Bruno Haible for CMUCL)
3000 * a partial workaround for the bug 262: the compiler does not try to
3001 inline-expand a local function doing RETURN-FROM from a deleted
3002 BLOCK. (thanks to Peter Denno for the bug report and to David
3003 Wragg for the simple test case)
3004 * fixed some bugs revealed by Paul Dietz' test suite:
3005 ** RENAME-PACKAGE allows all package designators as new package
3007 ** constraint propagation and lambda variable substitution are
3008 more cautious in dealing with partially deleted code.
3009 ** compiler sometimes lost reoptimization passes.
3010 ** CERROR, given a condition as condition designator, passes its
3011 remaining arguments to the continue format control without
3013 ** Case-altering FORMAT directives work correctly on non-ASCII
3015 ** The REAL type specifier handles bounds outside the floating
3016 point ranges without signalling FLOATING-POINT-OVERFLOW.
3017 ** Functions with IR1-transformations can create intercomponent
3018 references to global functions.
3019 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3021 ** FORMAT ~R treats a nil value for its first parameter correctly.
3023 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3024 * enhancement: saving cores with foreign code loaded is now
3025 supported on x86/NetBSD and sparc/Linux in addition to the previously
3026 supported platforms.
3027 * bug fix: on some platforms repeated installations caused multiple
3028 copies of HTML documentation to be installed -- should not happen
3029 any more. (reported by Stefan Scholl)
3030 * bug fix: parsing self-recursive alien record types multiple times
3031 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3032 original patch by Helmut Eller for CMUCL)
3033 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3034 (thanks to Richard Kreuter)
3035 * bug fix: defining classes whose accessors are methods on existing
3036 generic functions in other (locked) packages no longer signals
3037 bogus package lock violations. (reported by François-René Rideau)
3038 * bug fix: special variables as DEFMETHOD parameters no longer have
3039 associated bogus type declarations. (reported by David Wragg and
3041 * bug fix: read-write consistency on streams of element-type
3042 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3043 * bug fix: redefiniton of the only method of a generic function with
3044 no DEFGENERIC no longer emits a full WARNING. In addition,
3045 redefinition of generic functions with no DEFGENERIC to an
3046 incompatible lambda list now signals an error. (thanks to Zach
3048 * bug fix: DEFGENERIC now works even when there's a function of the
3049 same name in an enclosing lexical environment. (thanks to Zach
3051 * fixed compiler failure, caused by instrumenting code during
3052 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3053 * optimization: added loop analysis and improved register allocation
3054 * fixed some bugs revealed by Paul Dietz' test suite:
3055 ** POSITION on displaced vectors with non-zero displacement
3056 returns the right answer.
3057 ** (SIMPLE-STRING) is a valid type specifier for sequence
3059 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3061 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3062 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3064 ** The justification version of the FORMAT ~< directive treats
3065 non-zero minpad parameter correctly.
3067 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3068 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3069 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3070 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3071 the supported interface.
3072 * new feature: Single-stepping of code compiled with DEBUG 2 or
3073 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3074 * new feature: saving cores with foreign code loaded is now
3075 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3076 Timothy Moore's work for CMUCL)
3077 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3078 parameters to * instead of NIL if no initform is supplied.
3079 (reported by Johan Bockgaard)
3080 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3081 correctly when FUNCALL appears as the car of the form. Note:
3082 despite this FUNCALL forms are not currently subject to
3083 compiler-macro expansion. (port of Raymond Toy's fix for the
3084 same from CMUCL, reported by Johan Bockgaard)
3085 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3086 (thanks for Teemu Kalvas)
3087 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3088 case instead of terminating the iteration (thanks for Julian
3089 Squires, Sean Champ and Raymond Toy)
3090 * bug fix: incorrect expansion of defgeneric that caused a style
3091 warning. (thanks for Zach Beane)
3092 * bug fix: slot accessor effective method computation works properly
3093 for classes with multiple non-standard applicable methods on
3094 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3095 * on x86 compiler supports stack allocation of results of LIST and
3096 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3097 CMUCL implementation by Gerd Moellmann)
3098 * fixed some bugs revealed by Paul Dietz' test suite:
3099 ** FORMAT strings with both the ~<~:;~> form of the justification
3100 directive and pretty-printing directives cause an error.
3102 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3103 * incompatible change: the internal functions
3104 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3105 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3106 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3107 instead of the old functions.
3108 * new feature: on platforms where "dladdr" is available foreign
3109 function names now appear in backtraces. (based on Helmut Eller's
3111 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3112 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3114 * documentation: ASDF manual is now distributed with SBCL.
3115 * bug fix: SBCL can now load its contributed modules with REQUIRE
3116 even if the system-provided entries have been removed from
3117 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3119 * bug fix: backtraces involving undefined functions or assembly
3120 routines are more informative. (thanks to Brian Downing)
3121 * bug fix: mutually referent alien structures now work correctly.
3122 (reported by Rick Taube)
3123 * bug fix: structures defined by WITH-ALIEN can be referred to
3124 within other definitions in the same WITH-ALIEN.
3125 * bug fix: division operators (MOD, TRUNCATE and the like) with
3126 constant zero divisors and integer dividends no longer generate
3128 * bug fix: provide default methods for INPUT-STREAM-P and
3129 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3130 * bug fix: improve the detection and resolution of MOP metacycles
3131 (where effective method computation depends on the generic function
3132 having its effective method computed). (reported by Bruno Haible)
3133 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3134 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3135 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3136 * bug fix: pathnames with relative directory components can be
3137 represented relative to default pathnames.
3138 * optimization: in taking the GCD of bignums, reduce the two bignums
3139 to approximately the same size (using Euclid's algorithm) before
3140 applying the more sophisticated binary GCD. (thanks to Juho
3142 * optimization: COUNT on bitvectors now operates word-at-a-time.
3143 * optimization: ASH with a positive, but not necessarily constant,
3144 (leftwards) shift, when in a modular context, is compiled to a
3146 * fixed some bugs revealed by Paul Dietz' test suite:
3147 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3148 if the corresponding argument is NIL.
3149 ** FORMAT directives accepting a minpad parameter treat negative
3151 ** literal commas as character parameters to FORMAT directives are
3153 ** literal spaces directly after ~<Newline> directives within a
3154 format-logical-block (~:< ~@:>) do not induce :FILL-style
3155 conditional newlines.
3156 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3157 as specified: it no longer includes conditional newlines).
3158 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3160 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3161 :PER-LINE-PREFIX argument does not evaluate to a string.
3163 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3164 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3165 the manual for details; for now, package locks can be disabled by
3166 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3167 if no major problems are found then it is likely that they will be
3168 compiled in unconditionally.
3169 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3170 unsupported operators on all platforms. To load a shared library
3171 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3172 object file, link it into a shared library outside of SBCL and
3173 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3175 * bug workaround: ROOM T and the GC were not working together
3176 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3177 reporting facility aren't preserved. That reporting has been
3178 disabled, so now until and unless someone figures out how to make it
3179 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3180 * minor incompatible change: as threatened around sbcl-0.8.0, the
3181 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3182 The symbols are also exported from SB-PCL for backwards
3183 compatibility, but more so than before SB-PCL should be treated as
3184 an implementation-internal package.
3185 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3187 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3188 It is known as of this release not to work on the Alpha, however.
3189 * fixed bug #167: errors signalled due to illegal syntax in method
3190 bodies are now more legible.
3191 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3192 designators and can hence be used with TYPEP.
3193 * fixed bug #333: CHECK-TYPE now ensures that the type error
3194 signalled, if any, has the right object to be accessed by
3195 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3196 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3197 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3199 * fixed bug #334: programmatic addition of slots using specialized
3200 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3201 and :ALLOCATION :CLASS slots.
3202 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3203 float exponents. (rereported by Peter Seibel)
3204 * fixed a bug: #\Space (and other whitespace characters) are no
3205 longer considered to be macro characters in standard syntax by
3206 GET-MACRO-CHARACTER.
3207 * fixed bug: initialization of condition class metaobjects no longer
3208 causes an instance of the condition to be created. (reported by
3210 * fixed bug: it is now possible to have slots such that
3211 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3212 description is neither :INSTANCE nor :CLASS.
3213 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3214 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3215 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3216 non-standard SLOT-DEFINITION-ALLOCATION values.
3217 * fixed bugs: various race conditions handling exiting threads.
3218 CL-PPCRE's thread torture test now passes.
3219 * fixed arguably-a-bug: GC time proportional to number of threads in
3220 system even when most of them are idle
3221 * optimization: improved performance of BIT and SBIT on bit-vectors.
3222 * .fasl file incompatibility: The fasl file version number has
3223 been incremented because of changes associated with package locks.
3225 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3226 * minor incompatible change: the system no longer provides
3227 optimization hints (conditions which are TYPEP
3228 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3229 mode; these hints are still emitted when higher SPEED optimization
3231 * new contrib module: a sampling profiler (profiling by statistical
3232 sampling, rather than by instrumenting functions) is available as
3233 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3234 * the behaviour of the standard function ED is now customizeable by
3235 third parties through a hook variable: see ED's documentation
3236 string for information on the protocol.
3237 * the compiler no longer emits efficiency notes for (FUNCALL X)
3238 when the type of X is uncertain under default optimization
3240 * fixed bug 276: mutating a binding of a specialized parameter to a
3241 method to something that is not TYPEP the specializer is now
3243 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3244 exhibit the required behaviour on the x86 platform. (thanks to
3245 Peter van Eynde, Eric Marsden and Bruno Haible)
3246 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3247 even for difficult arguments. (reported by Peter Graves)
3248 * fixed bug 141a: the backquote printer now descends quoted
3250 * fixed another bug in backquote printing: no more destructive
3251 modification of the form's list structure. (reported by Brian
3253 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3254 move between its address being taken and the call to
3255 interrupt_thread, fixing a crashing race condition.
3256 * the SB-POSIX contrib implementation has been adjusted so that it
3257 no longer exhibits ridiculously poor performance when constructing
3258 instances corresponding to C structs.
3260 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3261 * minor incompatible change: the sb-grovel contrib now treats C
3262 structures as alien (in the sense of SB-ALIEN) objects rather than
3263 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3264 has implications for memory management of client code
3265 (sb-grovel-returned objects must now be manually managed) and for
3266 type safety (alien objects now have full types).
3267 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3268 used to control emission of compiler diagnostics, rather than the
3269 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3270 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3271 quality should be considered deprecated.
3272 * install.sh now installs the user manual as well
3273 * (not quite a new documentable feature, but worth considering in
3274 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3275 beginnings of a semantically meaningful condition hierarchy is
3276 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3278 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3279 designator as the defaults argument.
3280 * fixed bug: Displaced arrays whose displaced-to array has become
3281 too small now cause ARRAY-DIMENSION to signal an error, providing
3282 for safer bounds-checking. (reported by Bruno Haible)
3283 * fixed bug: DEFCLASS slot definitions with identical :READER and
3284 :WRITER names now signal a reasonable error. (reported by Thomas
3286 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3288 * fixed bug: Invalid slot specification errors now print correctly.
3289 (thanks to Zach Beane)
3290 * fixed bug 320: Shared to local slot value transfers in class
3291 redefinitions now happen corrently from superclasses as
3292 well. (reported by Bruno Haible)
3293 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3295 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3296 improper lists correctly. (reported by Bruno Haible)
3297 * fixed bug 313: source-transform for <fun-name> was erroneously
3298 applied to a call of a value of a variable with name <fun-name>.
3299 (reported by Antonio Menezes Leitao)
3300 * fixed bug 307: The obsolete instance protocol ensures that
3301 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3302 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3303 remove dead unknown-values globs from the middle of the stack.
3304 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3305 easier to resume long computations after using *BREAK-ON-SIGNALS*
3306 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3307 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3308 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3309 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3310 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3311 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3313 * fixed a (fairly theoretical) bug in string printing: if
3314 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3315 does not have array-element-type equal to the most general string
3317 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3318 function name. (thanks to Nikodemus Siivola)
3319 * fixed bug: compile-time format string checker failed on
3320 non-closed ~{. (reported by Thomas F Burdick)
3321 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3322 don't warn on legal loop code involving more than one aggregate
3323 boolean. (thanks to Nikodemus Siivola)
3324 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3325 in keyword position to MAKE-PACKAGE was not being reported as
3327 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3328 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3330 * fixed bugs 280 and 312: the checking for multiple definitions in a
3331 file is less likely to become confused by uses of inline
3333 * fixed bug: the #S reader macro performs the keyword coercion
3334 specified for slot names. (reported by Kalle Niemitalo)
3335 * fixed bug: lambda lists may contain symbols whose names start with
3336 & but are not lambda-list-keywords; their occurrence triggers a
3338 * fixed bug 321: define-method-combination argument lambda lists do
3339 not cause invalid code to be generated when &optional or &aux
3340 variables have default values. (reported by Bruno Haible)
3341 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3342 have CLOS classes; this appears also to have fixed reported
3343 instability in stack exhaustion detection.
3344 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3345 MUFFLE-WARNING when no associated restart is present is now
3347 * optimization: rearranged the expansion of various defining macros
3348 so that each expands into only one top-level form in a
3349 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3351 * optimization: used a previously little-used slot in symbols to
3352 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3354 * fixed some bugs revealed by Paul Dietz' test suite:
3355 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3357 ** Fixed an optimization bug related to inheritance of initforms
3358 from local to shared slots.
3359 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3360 ** CAST optimizer forgot to flush argument derived type.
3361 ** print/read consistency on floats is now orders of magnitude
3362 more likely. (thanks also to Bruno Haible for a similar report
3364 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3365 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3366 for objects of type REAL. Make it so.
3367 ** SXHASH is specified (infelicitously) to respect similarity,
3368 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3369 it so. (thanks to Markus Ziegler)
3370 ** on the Alpha, the compiler succeeds in compiling functions
3371 returning a known number of arguments greater than 63.
3372 ** fixed handling of invalid NIL arguments in keyword position
3374 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3376 ** provided a readably-printable representation for RANDOM-STATE
3378 ** ensured that pathnames, where they have a namestring, always
3379 print using #P"..." syntax.
3381 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3382 * Support for the forthcoming 2.0 version of the NetBSD kernel
3383 running on x86 hardware has been added. (thanks to Perry
3384 E. Metzger most immediately, and others for their past work)
3385 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3386 current release version; SBCL's OpenBSD support had been broken
3387 since about the time of OpenBSD's switch to ELF binary format.)
3388 * [placeholder for DX summary]
3389 ** user code with &REST lists declared dynamic-extent, under high
3390 speed or space and low safety and debug optimization policy.
3391 * The manual has been converted to Texinfo format and the debugger
3392 chapter from the cmucl manual has been added.
3393 * A facility has been added to extract documentation strings from
3394 sbcl and store them as Texinfo-formatted snippets for inclusion in
3395 the manual (via Texinfo's @include directive)
3396 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3397 the test case to Dave Roberts)
3398 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3399 pointers. (reported by Sean Ross)
3400 * bug fix: PROFILE output is printed nicely even for large numerical
3401 values. (thanks to Zach Beane)
3402 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3403 greater than 32 handle EOF correctly.
3404 * bug fix: on X86 an immediate argument of the IMUL instruction is
3405 correctly printed in disassembly. (thanks to Lutz Euler)
3406 * bug fix: class slots in redefined classes preserve their old
3407 values. (thanks to Bruno Haible and Nikodemus Siivola)
3408 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3409 succeeds. (reported by Marco Baringer)
3410 * fixed some bugs revealed by Paul Dietz' test suite:
3411 ** READ-SEQUENCE now works on ECHO-STREAMs.
3412 ** RATIONALIZE works more according to its specification. (thanks
3415 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3416 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3417 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3418 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3419 should matter to you only if you rebind the printer control
3420 variables and then find you want different bindings in the
3421 debugger than in the ordinary execution of your program.)
3422 * The runtime build system has been tweaked to support building
3423 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3424 assembler and linker. (thanks to Nikodemus Siivola)
3425 * Unbound, undefined, undeclared variables now trigger full
3426 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3427 more often programmer error than deliberate exploitation of undefined
3429 * optimization: the hash algorithm for strings has changed to one
3430 that is less vulnerable to spurious collisions. (thanks to Juho
3432 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3433 needless bounds checking. (thanks to Juho Snellman)
3434 * optimization: implemented multiplication as a modular
3435 (UNSIGNED-BYTE 32) operation on the PPC backend.
3436 * fixed some bugs revealed by Paul Dietz' test suite:
3437 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3439 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3440 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3441 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3443 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3445 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3447 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3448 their output stream on EOF from read.
3449 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3450 have been read to end-of-file.
3451 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3453 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3454 description of determination of which consecutive characters
3456 ** Printing the "Space" character with escaping on now yields "#\\ ",
3457 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3458 ** Reading floating-point numbers with *READ-BASE* set to a number
3459 less than 10 works correctly.
3460 ** Reading floating-point numbers with *READ-BASE* set to a number
3461 more than 10 works correctly.
3462 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3463 the readtable currently in effect.
3465 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3466 * minor incompatible change: parsing of namestrings on a physical
3467 (Unix) host has changed; numbers after the final #\. in a
3468 namestring are no longer interpreted as a version field. This is
3469 intented to be largely invisible to the user, except that the
3470 meaning of the namestring "*.*.*" has changed: it now refers to a
3471 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3472 should usually be replaced by
3473 (make-pathname :name :wild :type :wild :version :wild)
3474 with the added benefit that this is more likely to be portable.
3475 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3476 option to OPEN now signals an error if the file being opened
3477 exists; this may have an impact on existing code.
3478 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3479 signals received, on the PowerPC platforms (both Linux and
3480 Darwin). (thanks to Pierre Mai for pointing out the location of
3482 * several fixes on OS X: The system now builds and runs cleanly on
3483 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3484 (thanks to Brian Mastenbrook)
3485 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3486 second-resolution: integer multiples of 1/3600 between -24 and 24.
3487 (thanks to Vincent Arkesteijn)
3488 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3489 type when called with 1 argument; PEEK-CHAR checked type of
3490 PEEK-TYPE only after having read first character from a
3491 stream. (reported by Peter Graves)
3492 * bug fix: the garbage collector now has much better locality
3493 behaviour, and in particular no longer treats all memory as being
3494 exhausted when many small objects point to each other in a deeply
3496 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3497 recognized as being TYPEP their class.
3498 * bug fix: the PUSHNEW documentation string has been corrected.
3499 (thanks to Vincent Arkesteijn)
3500 * bug fix: defaulting of the value for the last of an atypically
3501 large number of multiple values being bound was not being
3502 performed correctly on the Alpha or PPC platforms
3503 * optimization: implemented multiplication as a modular
3504 (UNSIGNED-BYTE 32) operation on the x86 backend.
3505 * optimization: SEARCH on simple-base-strings can now be open-coded.
3506 (see also contrib/compiler-extras.lisp for inspiration for
3507 teaching the compiler about the Boyer-Moore algorithm).
3508 * value, returned by MAX (and MIN) called with several EQUALP, but
3509 not EQL, arguments now does not depend on compiler settings.
3510 * fixed some bugs revealed by Paul Dietz' test suite:
3511 ** in stack analysis liveness information is propagated from
3512 non-local entry points.
3513 ** pathwise CAST removing failed when the CAST node did not start
3515 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3516 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3518 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3519 host is already defined.
3520 ** RENAME-FILE works on streams instead of signalling an internal
3522 ** PEEK-CHAR uses the current readtable when determining whether
3523 or not a character is whitespace.
3524 ** MERGE-PATHNAMES handles the case when the pathname does not
3525 specify a name while the default-pathname specifies a version.
3526 ** Pathnames now stand a better chance of respecting print/read
3528 ** Attempting to use standardized file system operators with a
3529 pathname with invalid :DIRECTORY components signals a
3531 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3533 ** DIRECTORY on logical pathnames is more correct.
3534 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3535 signal a TYPE-ERROR if their argument is not a stream.
3536 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3537 designator argument does not designate a stream.
3538 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3539 examining the synonym.
3540 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3542 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3543 element-type larger than ([UN]SIGNED-BYTE 32).
3545 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3546 * When built with the :SB-FUTEX feature, threaded builds now take
3547 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3548 for faster/more reliable mutex and condition variable support.
3549 * Incompatible change (but one you probably shouldn't have been using
3550 anyway): the interface and code for arbitrating between multiple
3551 threads in the same user session has been redesigned.
3552 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3553 error when called without an explicit environment argument.
3554 (thanks to Nikodemus Siivola)
3555 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3556 confused about their position. (thanks to Adam Warner and Gerd
3558 * bug fix: Pretty printing backquoted forms with unquotations in the
3559 argument list position of various code constructs such as LAMBDA
3560 now works correctly. (reported by Paul Dietz)
3561 * bug fix: Pretty printing unquotations no longer loses all
3562 stream position information.
3563 * optimization: performance of string output streams is now less
3564 poor for multiple small sequence writes.
3565 * optimization: performance of CSUBTYPEP in the presence of complex
3566 expressions involving CONS and NOT many times has been improved.
3567 (reported by Paul Dietz)
3568 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3570 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3571 streams for the REPL, for the debugger, and so on. (thanks to
3573 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3574 * fixed some bugs revealed by Paul Dietz' test suite:
3575 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3576 is ignored if it is too small, rather than propagating through
3577 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3578 ** extremely complex negations of CONS types were not being
3579 sufficiently canonicalized, leading to inconsistencies in
3581 ** VALUES tranformer lost derived type.
3583 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3584 * fixed a bootstrapping bug: the build process no longer assumes
3585 that the various BOOLE-related constants have the same value in
3586 host and target lisps. (noted by Paul Dietz' test suite on an
3587 SBCL binary built from CLISP)
3588 * The system can now be dynamically linked on the MIPS platform,
3589 which enables dynamic loading of foreign code from Lisp. (thanks
3590 to Ralf Baechle for discussions on the MIPS ABI)
3591 * The system now records debugging information for its own source
3592 files in a filesystem-position-independent manner, relative to
3593 the "SYS" logical host.
3594 * fixed a compiler bug: MV-LET convertion did not check references
3595 to the "max args" entry point. (reported by Brian Downing)
3596 * tweaked disassembly notes to be less confident about proclaiming
3597 some instruction as an LRA. (thanks to Brian Downing)
3598 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3599 now each have their own history, command character, and other
3600 characteristics. (thanks to David Lichteblau)
3601 * fixed some bugs revealed by Paul Dietz' test suite:
3602 ** compiler failure in compiling LOGAND expressions including a
3604 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3605 shift greater than 32.
3606 ** FLUSH-DEST did not mark blocks for type check regeneration.
3607 ** HANDLER-CASE failed to accept declarations in handler clauses
3608 in some circumstances.
3610 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3611 * New code in contrib/sb-introspect (still probably not entirely
3612 stable yet) provides some support for smart Lisp development
3613 environments like SLIME.
3614 * The conditions signalled for errors occurring when loading .fasl
3615 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3616 in a way which should help ASDF recover gracefully.
3617 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3618 stuff has been cleaned up. If you code contrib/ stuff, this might
3619 affect you, and you can look at contrib/README, contrib/STANDARDS,
3620 and/or the 0.8.4.27 diff to check.
3621 * In full calls the compiler now does not generate checks for declared
3622 argument types for all arguments.
3623 * various threading fixes
3624 ** and some experimental patches which didn't make it into
3625 the main tree for this release, but which are shipped in
3626 contrib/experimental-thread.patch as a possible fix for some
3627 failures (deadlock, spinning...) in GC-intensive multithreaded
3629 * fixed PPC build problem (source code incompatibility of different
3630 library versions): added offsetof() hackery which attempts to divine
3631 where glibc maintainers put uc_mcontext today
3632 * fixed bug 282: compiler does not trust type assertions while passing
3633 arguments to a full call.
3634 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3635 &OPTIONAL VALUES type parameter.
3636 * fix bug 214: algorithm for noting rejected templates is now more
3637 similar to that of template seletion. (also reported by rydis on
3639 * fixed bug 141b: printing backquoted information readably and prettily
3640 inserts a space where necessary.
3641 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3642 (CHARACTER 10) are now reported as errors, rather than propagated
3643 as unknown types. (reported by piso on #lisp)
3644 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3645 with values NIL and :ERROR. (thanks to Milan Zamazal)
3646 * fixed bug 191c: CLOS now does proper keyword argument checking as
3647 described in CLHS 7.6.5 and 7.6.5.1.
3648 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3649 longer raise an error; further, using a list as a for-as-arithmetic
3650 counter now raises a meaningful error.
3651 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3652 now understood by sequence creation functions such as MAKE-SEQUENCE
3654 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3655 a STRING-INPUT-STREAM.
3656 * compiler enhancement: SIGNUM is now better able to derive the type
3658 * type declarations inside WITH-SLOTS are checked. (reported by
3660 * fixed some bugs revealed by Paul Dietz' test suite:
3661 ** incorrect optimization of TRUNCATE for a positive first
3662 argument and negative second.
3663 ** compiler failure in let-convertion during flushing dead code.
3664 ** compiler failure while deriving type of TRUNCATE on an
3665 interval, containing 0.
3666 ** ASH of a negative bignum by a negative bignum count now returns
3668 ** intersection of CONS types now canonicalizes properly, fixing
3669 inconsistencies in SUBTYPEP.
3671 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3672 * incompatible change: The --disable-debugger command line
3673 option now clobbers the debugger at a more fundamental
3674 level, by redefining #'INVOKE-DEBUGGER instead of by
3675 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3676 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3677 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3678 enter the debugger REPL and then suffer recursive errors
3679 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3680 while under the new system, BREAK in --disable-debugger mode
3681 terminates the system just as an unhandled error would.
3682 * fixed compiler performance when processing loops with a step >1;
3683 * bug fix: DOCUMENTATION now retrieves generic function
3684 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3685 support has been systematized, and now supports the methods
3686 specified by ANSI, along with a default method and a method for
3687 slot documentation. (reported by Nathan Froyd)
3688 * bug fix: effective methods associated with a generic function are
3689 no longer cached over a change of that generic function's method
3690 combination. (reported by Andreas Fuchs)
3691 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3692 names a non-existent directory. (thanks to Andreas Fuchs)
3693 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3694 the PPC platform, lead to stack corruption; this has been fixed.
3695 (reported by Rainer Joswig)
3696 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3697 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3698 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3699 arithmetic in general, is now much more reliable on the PPC
3701 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3702 platform now returns the right answer.
3703 * optimization: restored some effective method precomputation in
3704 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3705 precomputation is now tunable.
3706 * optimization: compiler-internal data structure use has been
3707 reviewed, and changes have been made that should improve the
3708 performance of the compiler by about 20%.
3709 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3710 simple-base-strings and simple-bit-vectors is improved.
3711 * optimization: the optimization of 32-bit logical and arithmetic
3712 functions introduced in version 0.8.3 on the x86 has been
3713 implemented on the mips, ppc and sparc platforms; an
3714 implementation of the same facility, but for 64-bit arithmetic,
3715 has been added for the alpha.
3716 * microoptimization: the compiler is better able to make use of the
3717 x86 LEA instruction for multiplication by constants.
3718 * bug fix: in some situations compiler did not report usage of
3719 generic arithmetic in (SPEED 3) policy.
3720 * bug 145b fix: compiler used wrong type specifier while converting
3721 MEMBER-types to numeric.
3722 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3724 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3725 index argument now works properly on the Alpha platform.
3726 * bug fix: floating point exception treatment on the Alpha platform
3728 * bug fix: FILE-POSITION works much better on string input and
3729 output streams. (thanks to Nikodemus Siivola)
3730 * bug fix: many threading/garbage collection symptoms sorted.
3731 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3732 might be pseudo-atomic.
3733 * internal change: Stopping for GC is now done with signals not
3734 ptrace. GC is now done in whichever thread wanted it, instead of
3736 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3738 * bug fix: result form in DO is not contained in the implicit
3740 * incompatible change: ICR structure is changed; the value part of
3741 CONTINUATION is now called LVAR; corresponding functions are
3742 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3743 * added type deriver for ISQRT (thanks to Robert E. Brown).
3744 * bug fix: better support for loading from the command line when an
3745 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3747 * fixed some bugs revealed by Paul Dietz' test suite:
3748 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3749 ** ROUND and FROUND now give the right answer when given very
3750 small float arguments.
3751 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3753 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3754 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3755 ** LCM should return a non-negative integer.
3756 ** PARSE-INTEGER returned the index of a terminator instead of the
3757 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3758 ** PARSE-INTEGER returned an incorrect index being applied to a
3760 ** LCM with two arguments of 0 returns 0 rather than signalling
3762 ** unsigned addition of a 32-bit constant with the high bit set no
3763 longer causes an internal compiler error on the x86.
3764 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3765 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3766 with negative last argument.
3767 ** byte specifiers with zero size and position no longer cause
3768 an error during type derivation.
3769 ** bignum multiplication on the Alpha platform now returns the
3771 * porting: The system now builds on SuSE AMD64, although it still
3772 generates a 32-bit binary.
3773 * .fasl file incompatibility: The fasl file version number has
3774 been incremented (because of the changes to internal compiler
3775 data structures referred to above).
3777 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3778 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3779 more accurately, on the Darwin kernel running on PowerPC hardware.
3780 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3781 * Compiler code deletion notes now signal a condition of type
3782 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3783 an associated MUFFLE-WARNING restart.
3784 * The compiler now performs limited argument count validation of
3785 constant format strings in FORMAT, and where appropriate in ERROR,
3786 CERROR and WARN. (thanks to Gerd Moellmann)
3787 * New ASDF-INSTALL contrib can be used for automatic download and
3788 installation of third-party Lisp code from CCLAN or other sites
3790 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3791 which forces another thread to execute a function supplied by the
3793 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3794 now accept and act upon their :ELEMENT-TYPE keyword argument.
3795 (reported by Martin Atzmueller, Edi Weitz)
3796 * bug fix: FILE-POSITION now accepts position designators up to
3797 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3798 is the greater. (thanks to Patrik Nordebo)
3799 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3800 Kalle Olavi Niemitalo)
3801 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3802 printable. (reported by Eric Marsden)
3803 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3804 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3805 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3806 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3807 (thanks to Stig Sandoe)
3808 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3809 UNREAD-CHAR now correctly includes the unread character in the
3810 target sequence. (thanks to Gerd Moellmann)
3811 * bug fix in threaded builds: the system can now be suspended and
3812 resumed by shell job control with minimal disruption.
3813 * bug fixes in times and timezones >2038AD
3814 * better handling of "where is GNU make?" problem in build scripts
3815 (thanks to Nikodemus Siivola)
3816 * new optimization: inside a named function any reference to a
3817 function with the same name is considered to be a self-reference;
3818 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3819 optimization quality.
3820 * new optimization on x86: logical functions and + now have
3821 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3822 used when the result is truncated to 32 bits.
3823 * VALUES declaration is partially enabled.
3824 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3825 * fixed some bugs revealed by Paul Dietz' test suite:
3826 ** The system now obeys the constraint imposed by
3827 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3828 types form a lattice under type intersection.
3829 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3830 ** ASSOC now ignores NIL elements in an alist.
3831 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3832 and (1+ MOST-POSITIVE-FIXNUM) answers.
3833 ** The addition of a method with invalid qualifiers to a generic
3834 function does not cause an error to be signalled immediately;
3835 a warning is signalled, and the error is generated only on
3836 calling the generic function.
3837 * changed .fasl file version number, in part to add type codes for
3838 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3839 obscure ANSI requirements
3841 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3842 * fixed bug 148: failure to inline-expand a local function left
3843 garbage, confusing the compiler.
3844 * fixed bugs 3cd: structure slot readers perform type check if the
3845 slot can have an invalid value (i.e. it is either not initialized
3846 or can be written with a less specific slot writer).
3847 * bug fix: the compiler now traps array references to elements off
3848 the end of an array; previously, the bounds checking in some
3849 circumstances could go off-by-one.
3850 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3852 * type declarations for array element types now obey the description
3853 on the CLHS page "Declaration TYPE", as per discussions on
3854 sbcl-help around 2003-05-08. This means that a declaration
3855 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3856 declaration, all references to BAR will be asserted or assumed
3857 (with THE, so dependent on compiler policy) to involve objects of
3858 type FOO. Note that no such declaration is implied in
3859 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3860 * declared types of functions from the "Conditions"
3861 chapter. (reported by Paul Dietz)
3862 * bug fix: CERROR accepts a function as its first argument.
3863 * bug fix: NTH an NTHCDR accept a bignum as index
3864 arguments. (reported by Adam Warner)
3865 * optimization: character compare routines now optimize comparing
3866 against a constant character. (reported by Gilbert Baumann)
3867 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3868 argument now works properly on the MIPS platform.
3869 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3870 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3871 declared to have a functional type, does not cause an error
3873 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3874 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3875 * fixed bug: if last continuation of a deleted block has a
3876 destination, this destination should be deleted too. (reported by
3878 * fixed a bug in the bootstrap process: the host compiler's values
3879 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3880 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3881 test case from Patrik Nordebo)
3882 * improved the ability of the disassembler on the PPC platform to
3883 provide helpful disassembly notes.
3884 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3885 the class in more cases than previously.
3886 * bug fix: FILE-POSITION now understands :START and :END for
3887 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3888 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3889 8) data. (thanks to David Lichteblau)
3890 * bug fix: it is possible to add a method to a generic function
3891 without lambda list.
3892 * bug fix: reader failed to signal END-OF-FILE inside an
3893 object representation. (reported by Nikodemus Siivola)
3894 * fixed some bugs revealed by Paul Dietz' test suite:
3895 ** LAST and [N]BUTLAST should accept a bignum.
3896 ** condition slot accessors are methods.
3897 ** (VECTOR NIL) is a subtype of STRING.
3899 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3900 * minor incompatible change: some nonsensical specialized lambda
3901 lists (used in DEFMETHOD) which were previously ignored now signal
3903 * minor incompatible change: the system is now aware of the types of
3904 variables in the COMMON-LISP package, and will signal errors for
3905 most violations of these type constraints (where previously they
3906 were silently accepted).
3907 * minor incompatible change: COMPILE-FILE now uses the freedom
3908 afforded (ANSI 3.2.2.3) to use derived function types for
3909 functions defined in the same file. This also permits the system
3910 to warn on static type mismatches and function
3911 redefinition. (Currently it does not work with high DEBUG level.)
3912 * minor incompatible change: VALUES declaration is disabled.
3913 * When issuing notes, the compiler now signals a condition of type
3914 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3915 restart for use in user handlers. It is expected that the
3916 COMPILER-NOTE condition will eventually become a condition
3917 supertype to a hierarchy of note types, which will then be
3918 handleable in a similar fashion. However, at the moment, no such
3919 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3920 but it's an implementation detail, not a classification for the
3922 * Changes in type checking closed the following bugs:
3923 ** type checking of unused values (192b, 194d, 203);
3924 ** template selection based on unsafe type assertions (192c, 236);
3925 ** type checking in branches (194bc).
3926 * A short form of VALUES type specifier has ANSI meaning (it has
3927 increased the number of situations when SBCL cannot perform type
3929 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3930 keywords or constants is permissible.
3931 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3932 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3933 classes. (thanks to Antonio Martinez)
3934 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3935 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3936 argument to a pretty-print stream. Instead, it leaves any such
3937 operations to DESCRIBE-OBJECT methods.
3938 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3940 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3941 lambda lists. (thanks to David Lichteblau)
3942 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3943 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3944 (thanks to Gerd Moellmann)
3945 * fixed bug 246: increased compilation speed of long
3946 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3948 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3950 * DEFCONSTANT now throws a condition of type
3951 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3952 constant to a non-EQL value; CONTINUE and ABORT restarts
3953 respectively change and preserve the value.
3954 * fixed bug 63: The code walker, part of the implementation of CLOS,
3955 is now better at handling symbol macros.
3956 * bug fix: There is no longer an internal implementation type named
3957 CL:LENGTH. (reported by Raymond Toy)
3958 * bug fix: In macro-like defining macros/special operators the
3959 implicit block does not enclose the lambda list.
3960 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3961 enclosed in parentheses) are not suitable as type specifiers, and
3962 their use properly signals an error now.
3963 * bug fix: An argument count mismatch for a type specifier in code
3964 being compiled no longer causes an unhandled error at compile
3965 time, but signals a compile-time warning.
3966 * fixed simple vector readable printing
3967 * bug fix: DESCRIBE takes more care over whether the class
3968 precedence list slot of a class is bound before accessing it.
3969 (reported by Markus Krummenacker)
3970 * bug fix: FORMATTER can successfully compile pretty-printer format
3971 strings which use variants of the ~* directive inside.
3972 * bug fix: SEARCH now applies its TEST predicate to the elements of
3973 the arguments in the correct order. (thanks to Wolfhard Buss)
3974 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3975 in type inference. (thanks to Robert E. Brown)
3976 * bug fix: Reading in symbols with an explicit package name of ""
3977 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3978 * fixed some bugs revealed by Paul Dietz' test suite:
3979 ** NIL is now allowed as a structure slot name.
3980 ** Arbitrary numbers, not just REALs, are allowed in certain
3981 circumstances in LOOP for-as-arithmetic clauses.
3982 ** Multiple class redefinitions before slot access no longer
3983 causes a type error.
3984 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3985 association between the name and a class.
3986 ** Generic functions with non-standard method-combination and over
3987 five methods all of which return constants no longer return NIL
3988 after the first few invocations. (thanks to Gerd Moellmann)
3989 ** CALL-NEXT-METHOD with no arguments now passes the original
3990 values of the arguments, even in the presence of assignment.
3991 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3993 ** DISASSEMBLE works with closures and funcallable instances.
3994 ** ADD-METHOD now returns the generic function, not the new method.
3995 ** FIND-METHOD signals an error if the lengths of the specializers
3996 is incompatible with the generic function, even if the ERRORP
3998 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3999 which its argument is a member.
4000 ** DEFCLASS only redefines the class named by its class-name
4001 argument if that name is the proper name of the class;
4002 otherwise, it creates a new class.
4003 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4004 of the UNBOUND-SLOT condition to the name of the slot.
4005 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4006 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4007 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4008 SLOT-MAKUNBOUND in the specified fashion.
4010 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4011 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4012 cross-compilation host. As a consequence, we can now bootstrap our
4013 way up to SBCL starting with a bare gcc toolchain and human-readable
4014 source code (first the source to CLISP, then the source to SBCL).
4015 * A contributed module containing a partial implementation of the
4016 simple-streams interface has been included. (thanks to Rudi
4018 * A contributed module implementing the RFC1321 Message Digest
4019 Algorithm, known as MD5, has been included.
4020 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4021 no longer has any effect, as the code controlled by this feature
4022 has been deleted. (As far as we know, no-one has ever built using
4023 this feature, and its semantics were confused in any case).
4024 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4025 work on conditions (as required by the ANSI specification),
4026 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4027 expected behaviour on conditions. Users should note, however,
4028 that such behaviour is not required by the ANSI specification,
4029 and so use of this behaviour may render their code unportable.
4030 * fixed some bugs revealed by Paul Dietz' test suite:
4031 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4033 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4034 ** SXHASH on condition objects no longer returns NIL.
4035 ** :ALLOCATION :CLASS slots are better treated; their values are
4036 updated on class redefinition, and initforms inherited from
4037 superclasses are applied.
4038 ** REMOVE-METHOD returns its generic function argument even when
4039 no method was removed.
4040 ** SHARED-INITIALIZE now initializes the values of the requested
4041 slots, including those with :ALLOCATION :CLASS.
4042 ** ALLOCATE-INSTANCE now works on structure classes defined via
4043 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4045 ** SLOT-EXISTS-P now works on conditions, as well as structures
4047 ** MAKE-LOAD-FORM now has the required methods on
4048 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4049 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4050 keyword, and now implements the SLOT-NAMES argument.
4051 ** methods with &OPTIONAL arguments no longer allow too many
4052 arguments to be passed in the call without error.
4053 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4054 option is consistent with the required arguments of the generic
4055 function lambda list.
4056 * bug fix: REQUIRE accepts a string designator. (Thanks to
4058 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4059 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4060 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4061 * bug fix: The compiler now checks for duplicated variables in macro
4063 * bug fix: SETQ on globals returns the correct value.
4064 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4065 not a COMPILER-ERROR (followed by some other strange error on
4066 choosing the CONTINUE restart).
4067 * bug fix: make.sh and friends are now more consistent in the way that
4068 they look for GNU "make".
4070 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4071 * experimental native threads support (on x86 Linux >=2.4 only).
4072 This is not compiled in by default: you need to add :SB-THREAD to
4073 the target features. See the "Beyond ANSI" chapter of the manual
4075 * fix for longstanding nonANSIism: The old distinction between
4076 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4077 The return value from CL:FIND-CLASS is now a CLOS class, and
4078 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4079 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4080 * An interface to the MetaObject Protocol, as described in Kiczales,
4081 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4082 MIT Press, 1991, is available from the SB-MOP package.
4083 * incompatible change: the SB-PCL package should now be considered
4084 a private implementation detail, and no longer a semi-private MOP
4086 * minor incompatible change: due to rearrangement for threads, the
4087 control stack and binding stack are now allocated at arbitrary
4088 addresses instead of being hardcoded per-port. Users affected by
4089 this probably have to be doing advanced things with shared
4090 libraries, and will know who they are.
4091 * minor incompatible change: Previously, all --eval forms used were
4092 processed with READ before any of them were processed with EVAL.
4093 Now each --eval form is processed with both READ and EVAL before
4094 the next --eval form is processed. (Thus package operations like
4095 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4096 work as the user might reasonably expect.)
4097 * minor incompatible change: *STANDARD-INPUT* is now only an
4098 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4100 * minor incompatible change: Y-OR-N-P is now character-oriented,
4101 not line oriented. Also, YES-OR-NO-P now works without errors.
4102 (thanks to Antonio Martinez)
4103 * sb-aclrepl module improvements: an integrated inspector, added
4104 repl features, and a bug fix to :trace command.
4105 * Known functions, which cannot be open coded by the backend, are
4106 considered to be able to check types of their arguments. (fixing
4107 a bug report by Nathan J. Froyd)
4108 * fixed a bug in computing method discriminating functions: It is
4109 now possible to define methods specialized on classes which have
4110 forward-referenced superclasses. (thanks to Gerd Moellmann)
4111 * fixed evaluation order in optional entries (reported by Gilbert
4113 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4114 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4115 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4116 required-by-AMOP NAME argument, as well as CLASS and
4117 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4118 * fixed bug 20: DEFMETHOD can define methods using names that are
4119 not the proper names of classes to designate class specializers.
4120 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4121 Unix file descriptors, instead of blowing up. (thanks to Antonio
4123 * Garbage collection refactoring: user-visible change is that a
4124 call to the GC function during WITHOUT-GCING will not do garbage
4125 collection until the end of the WITHOUT-GCING. If you were doing
4126 this you were probably losing anyway.
4127 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4128 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4129 TYPEP the latter but not the former.
4130 * The compiler issues a full WARNING for calls to undefined functions
4131 with names from the CL package.
4132 * MAP-INTO for a vector destination is open coded. (reported by
4133 Brian Downing on c.l.l)
4134 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4135 documentation string.
4136 * fixed some bugs revealed by Paul Dietz' test suite:
4137 ** COPY-ALIST now signals an error if its argument is a dotted
4139 ** Condition slots are now accessed more correctly in the presence
4140 of multiple initargs for a given slot.
4141 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4142 exclude restarts of the same name associated with a different
4144 ** DEFCLASS of forward-referenced classes with another
4145 forward-referenced class in the superclasses list no longer
4147 ** Condition slots are now initialized once each, not multiple
4148 times. (thanks to Gerd Moellmann)
4149 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4151 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4152 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4153 arguments contain duplicated elements.
4154 ** RESTART-CASE understands local macros.
4155 ** RESTART-CASE associates exactly its own restarts with a condition.
4156 ** ENDP in safe mode checks its argument to be of type LIST.
4157 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4158 in question is unbound.
4159 ** Optimized MAKE-INSTANCE functions no longer cause internal
4160 assertion failures in the presence of duplicate initargs.
4161 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4162 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4163 propagated even in the ctor optimized implementation of
4165 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4167 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4168 * a better implementation of SXHASH on (simple) bit vectors,
4169 measured both in execution speed and in distribution of results
4170 over the positive fixnums, has been installed. Likewise, a better
4171 implementation of EQUAL for simple bit vectors is now available.
4172 * fixed CEILING optimization for a divisor of form 2^k.
4173 * fixed bug 240 (emitting extra style warnings "using the lexical
4174 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4175 by Antonio Martinez)
4176 * fixed SXHASH, giving different results for NIL depending on type
4177 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4178 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4179 variable. (found by Rolf Wester)
4180 * SBCL does not ignore type declarations for special
4181 variables. (reported by rif on c.l.l 2003-03-05)
4182 * some bug fixes in contrib/sb-aclrepl/
4183 * fixed some bugs revealed by Paul Dietz' test suite:
4184 ** a bug in the CONS type specifier, whereby the CAR and CDR
4185 types got intertwined, has been fixed;
4186 ** the type system is now able to reason about the interaction
4187 between INTEGER and RATIO types more completely;
4188 ** APPEND, [N]REVERSE and NRECONC check that those their
4189 arguments, which must be proper lists, are really so;
4190 ** An array specialized to be unable to hold elements has been
4191 implemented, as required -- yes, really -- by ANSI;
4192 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4193 on malformed property lists;
4195 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4196 * incompatible packaging change: in line with Unix convention,
4197 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4198 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4199 * REQUIRE and PROVIDE are now optionally capable of doing something
4200 useful. See the documentation string for REQUIRE.
4201 * infrastructure for a managed SBCL contrib system: contributed
4202 modules in this release include:
4203 ** the ASDF system definition facility;
4204 ** an interface to the BSD Sockets API;
4205 ** an ACL-like convenience interface to the repl;
4206 (thanks to Kevin Rosenberg)
4207 ** an implementation of ROTATE-BYTE, with efficient implementation
4209 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4210 gives a closer approximation to the right answer than previously.
4211 (thanks to Raymond Toy)
4212 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4213 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4214 optional environment arguments, as required by ANSI.
4215 * fixed bugs in other functions taking environment objects, allowing
4216 calls with an explicit NIL environment argument to be compiled
4218 * fixed bug 228: primary return values from
4219 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4220 COMPILE or FUNCTION.
4221 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4222 :TYPE will no longer signal errors on innocuous objects.
4223 * fixed bug 231b: SETQ is better at respecting type declarations in
4224 the lexical environment.
4225 * fixed a bug in DEFCLASS: classes named by symbols with no or
4226 unprintable packages can now be defined.
4227 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4228 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4229 * fixed compiler failure related to checking types of functions.
4230 (reported by Robert E. Brown)
4231 * the compiler is now much more consistent in its error-checking
4232 treatment of bounding index arguments to sequence functions: in
4233 (SAFETY 3) code, errors will be signalled in almost all cases if
4234 invalid sequence bounding indices are passed to functions defined
4235 by ANSI to operate on sequences.
4236 * fixed a bug in the build procedure: documentation of SBCL-specific
4237 packages is now preserved and available in the final Lisp image.
4238 * lifted FDEFINITION lookup out of loops in the implementation of
4239 many list operations. (thanks to Robert E. Brown)
4240 * fixed a bug in the reader: the #n# reader macro now works for
4241 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4242 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4243 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4244 E. Brown and Tony Martinez respectively)
4245 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4246 SLOT-BOUNDP: in particular, it is now able to optimize them much
4247 better, and is now not vulnerable to having packages renamed.
4248 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4249 always called when a slot is not present in an instance. (thanks
4251 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4252 longer signal an error on unreading a character following EOF on
4253 the previous constituent stream. (thanks to Tony Martinez)
4254 * fixed some bugs revealed by Paul Dietz' test suite:
4255 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4256 not just nonnegative fixnums;
4257 ** the logical bit-array operators such as BIT-AND now accept an
4258 explicit NIL for their "opt-arg" argument (to indicate a
4259 freshly-consed result bit-array);
4260 ** ELT now signals an error on an invalid sequence index in safe
4262 ** the type system is now cleverer about negations of numeric
4263 types, and consequently understands the BIGNUM and RATIO types
4265 ** the type system is now cleverer about the interaction between
4266 INTEGER and RATIO types: while bugs still remain, many more
4267 cases are accurately computed;
4268 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4269 if it is in the last clause;
4270 ** CONSTANTLY now correctly returns a side-effect-free function in
4272 ** DECLARE is no longer treated as a special-operator; in
4273 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4274 * incremented fasl file version number due to the change in the
4275 DEFSTRUCT-SLOT-DESCRIPTION structure.
4277 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4278 * minor incompatible change: code processed by the "interpreter" or
4279 EVAL now has a compilation optimization policy of (DEBUG 2)
4280 (changed from (DEBUG 1)) to improve debuggability of interactive
4281 development, and to allow the use of the debug RETURN command in
4283 * an experimental implementation of the RETURN command for the
4284 debugger has been included. (thanks to Frederik Kuivinen)
4285 * fixed bug 62: constraints were not propagated into a loop.
4286 * fixed bug in embedded calls of SORT (reported and investigated by
4288 * fixed some bugs revealed by Paul Dietz' test suite:
4289 ** printing and reading of arrays with some dimensions having
4290 length 0 (thanks to Gerd Moellmann);
4291 ** BOA constructor with &AUX argument without a default value does
4292 not cause a type error;
4293 ** CONSTANTP now returns true for all self-evaluating objects.
4295 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4296 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4297 accessors that are related by inheritance, as specified in the
4298 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4299 Valtteri Vuorikoski)
4300 * The compiler is now able to inline functions that were defined in
4301 a complex lexical environment (e.g. inside a MACROLET).
4302 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4304 * Support for the upcoming FreeBSD-5.0 release has been included.
4305 (thanks to Dag-Erling Smorgrav)
4306 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4307 effect when it is not in a toplevel context.
4308 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4309 stand a better chance of being correct. (thanks to Gerd
4311 * fixed bug in COERCE, which now signals an error on coercing a
4312 rational to a bounded real type which excludes the expected
4314 * The compiler is now able to derive types more accurately from the
4315 COERCE and COMPILE functions.
4316 * fixed bug 223: functional binding is considered to be constant
4317 only for symbols in the CL package.
4318 * fixed bug 231: SETQ did not check the type of a variable being set
4319 (reported by Robert E. Brown)
4320 * A new optimization for MAKE-INSTANCE has been included, fixing
4321 various bugs (including relating to :ALLOCATION :CLASS slots and
4322 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4324 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4325 ** As required by ANSI, LOOP now disallows anonymous collection
4326 clauses such as COLLECT I in conjunction with aggregate boolean
4327 clauses such as THEREIS (= I 1);
4328 ** LOOP now signals an error when any variable is reused in the
4329 same loop (including the potentially useful construct analogous
4330 to WITH A = 1 WITH A = (1+ A);
4331 ** IT is only a special loop symbol within the first clause of a
4332 conditional loop clause;
4333 ** LOOP with a typed iteration variable over a hashtable now
4334 signals a type error iff it should.
4335 * fixed some other bugs revealed by Paul Dietz' test suite:
4336 ** FILE-STREAM now names the class previously known as FD-STREAM;
4337 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4338 argument) no longer signals an error;
4339 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4340 of the slot symbol, rather than using the current package
4341 ((:CONC-NAME "") continues to intern the slot's name in the
4343 * incremented fasl file version number, because of the incompatible
4344 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4345 of the new implementation of DEFINE-COMPILER-MACRO.
4347 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4348 * Support for building SBCL for MIPS platforms running in
4349 little-endian mode has now been checked in, and basic
4350 functionality on said platforms verified.
4351 * minor incompatible change: PCL now records the pathname of a file
4352 in which methods and the like are defined, rather than its
4354 * minor incompatible change: TRUENAME now considers the truename of
4355 a file naming a directory to be the pathname with :DIRECTORY
4356 component indicating that directory.
4357 * minor incompatible change: a NAMED clause in the extended form of
4358 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4359 reason for the previous behaviour is unclear.
4360 * more systematization and improvement of CLOS and MOP conformance
4361 in PCL (thanks to Gerd Moellman and Pierre Mai):
4362 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4364 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4365 primary methods with no specializers;
4366 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4368 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4369 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4370 FORWARD-REFERENCED-CLASSes; error reporting on
4371 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4373 ** SXHASH on CLOS instances now uses a slot internal to the
4374 instance to return different numbers on distinct instances,
4375 while preserving the same return value through invocations of
4377 ** DEFMETHOD signals errors when methods with longer incongruent
4378 lambda lists are added to generic functions;
4379 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4380 CLASS, as specified in AMOP;
4381 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4382 on the order returned by the primary method for classes of
4383 class STANDARD-CLASS;
4384 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4385 * fixed some bugs shown by Paul Dietz' test suite:
4386 ** DOLIST puts its body in TAGBODY;
4387 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4389 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4390 value producing form;
4391 ** if more variables are given to PROGV than values, extra
4392 variables are bound and made to have no value;
4393 ** NSUBSTITUTE on list arguments gets the right answer with
4395 ** ELT signals an error of type TYPE-ERROR when the index argument
4396 is not a valid sequence index;
4397 ** LOOP signals (at macroexpansion time) an error of type
4398 PROGRAM-ERROR when duplicate variable names are found;
4399 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4400 ** FUNCALL of special-operators now cause an error of type
4402 ** PSETQ now works as required in the presence of side-effecting
4403 symbol-macro places;
4404 ** NCONC accepts any object as its last argument;
4405 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4407 ** loop-for-as-package does not require a package to be explicitely
4409 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4411 * fixed bug 166: compiler preserves "there is a way to go"
4412 invariant when deleting code.
4413 * fixed bug 172: macro lambda lists with required arguments after
4414 &REST arguments now cause an error to be signalled. (thanks to
4416 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4417 bug. (thanks to Matthew Danish)
4418 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4420 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4421 arguments are lexically rebound. (thanks to Gerd Moellmann and
4423 * fixed bug 194: error messages are now more informative when there
4424 is no primary method applicable in a call to a generic
4425 function. (thanks to Gerd Moellmann)
4426 * fixed bug in command line argument checking (thanks to Julian
4428 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4429 (thanks to Matthew Danish)
4430 * incremented fasl file version number, because of the
4431 SXHASH-related changes in the layout of CLOS data structures
4433 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4434 * minor incompatible change: The runtime (the Unix executable named
4435 "sbcl") is now much pickier about the .core files it will load.
4436 Essentially it now requires .core files to descend from the same
4437 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4438 as the runtime does. (The intent is to prevent the crashes which
4439 can occur, and which can even be reported as mysterious failures,
4440 when people patch the sources or change the build parameters
4441 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4442 sbcl and .core files.)
4443 * fixed bug: VALUES-LIST is no longer optimized away.
4444 * fixed bug 142: The FFI conversion of C string values to Lisp
4445 string values no longer conses excessively. (thanks to Nathan
4446 Froyd porting Raymond Toy's fix to CMU CL)
4447 * began to systematize and improve MOP conformance in PCL (thanks to
4448 Nathan Froyd, Gerd Moellman and Pierre Mai):
4449 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4451 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4452 ** FINALIZE-INHERITANCE is now called on class finalization;
4453 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4454 argument precedence order.
4455 * fixed bug 202: The compiler no longer fails on functions whose
4456 derived types contradict their declared type.
4457 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4458 so it can be non-toplevel.
4459 * The fasl file version number has changed (because of the new
4460 implementation of DEFMACRO).
4461 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4462 safe code, that any length requirement by their type-specifier
4463 argument is valid. The exceptions to this are described in bug
4465 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4466 functions now check the types of their inputs as required by ANSI.
4467 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4468 introduced symbol is DECLAREd to be SPECIAL.
4469 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4470 * fixed bug: :COUNT argument to sequence functions may be negative
4471 * fixed bug: body of DO-SYMBOLS may contain declarations
4472 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4473 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4474 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4475 symbol macro only once
4476 * fixed printing of call frame when argument list is unavailable
4477 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4478 * compiler no longer signals WARNING on unknown keyword
4481 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4482 * A beta-quality port to the mips architecture running Linux,
4483 based on the old CMUCL backend, has been made. It has been tested
4484 on a big-endian kernel, and works sufficiently well to be able to
4485 rebuild itself; it has not been tested in little-endian mode.
4486 * fixed an inconsistency between gencgc.c and purify.c which made
4487 dumping/loading .core files unreliable
4488 * fixed bug 120a: The compiler now deals correctly with IFs where
4489 the consequent is the same as the alternative, instead of
4490 misderiving the return type. (thanks to Alexey Dejneka)
4491 * fixed bug 113: Logical pathnames are now dumpable (the logical
4492 host is resolved at load-time, throwing an error if it is not
4494 * fixed bug 174: FORMAT's error message is slightly clearer when a
4495 non-printing character is used in a format directive.
4496 * fixed several bugs in compiler checking of type declarations, i.e.
4497 violations of the Python "declarations are assertions" principle
4498 (thanks to Alexey Dejneka)
4499 * fixed several bugs in PCL's error checking (thanks to Gerd
4501 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4503 * fixed bug in compilation of functions as first class values
4504 (thanks to Antonio Martinez-Shotton)
4505 * The compiler's handling TYPE-ERRORs which it can prove will
4506 inevitably happen at runtime has been cleaned up and corrected
4507 in several ways. (thanks to Alexey Dejneka)
4508 * improved argument type checking for various basic arithmetic
4509 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4510 lavished on them in the past that they can be compiled in many
4511 ways in different special cases
4512 * fixed bug 181: compiler checks validity of user supplied type
4514 * cleaned up code flushing in optimization: Function calls which
4515 should signal errors for safety purposes (e.g. which ANSI says
4516 should signal errors when their arguments are of incorrect type)
4517 are no longer optimized away.
4518 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4519 * incremented fasl file version number, because changes in the
4520 implementation of sequence functions like COERCE caused
4521 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4522 in old inline expansions) to become undefined. (Actually these
4523 changes were later undone, so we might very well be binary
4524 compatible with 0.7.7 after all, but leaving the version number
4525 incremented seemed like the simplest and most conservative
4528 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4529 * An alpha-quality port to the parisc architecture running Linux,
4530 based on the old CMUCL backend, has been made. This, even more so
4531 than the other backends, should be considered still a work in
4532 progress; known problems include that the Linux kernel in 64-bit
4533 mode does not propagate the correct sigcontext structure to
4534 userspace, and consequently SBCL on a parisc64 kernel will not
4536 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4537 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4538 suppressed.) Also now that the compiler is looking at declarations
4539 in the environment, it checks optimization declarations as well,
4540 and suppresses inlining when (> DEBUG SPEED).
4541 * More fixes have been made to treatment of floating point exception
4542 treatment and other Unix signals. In particular, floating point
4543 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4544 * The detection and handling of control stack exhaustion (infinite
4545 or very deeply nested recursion) has changed. Stack exhaustion
4546 detection is now done by write-protecting pages at the OS level
4547 and applies at all optimization settings; when found, a
4548 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4549 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4550 be caught using IGNORE-ERRORS.
4551 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4552 correctly when transforming recursive LABELS functions to LETs.
4553 (thanks to Alexey Dejneka)
4554 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4555 that are names of constants or global variables.
4556 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4557 alien routines with docstrings.
4558 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4559 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4561 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4562 (thanks to Eric Marsden)
4563 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4564 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4565 * Bug fix: The SPARC backend can now compile functions involving
4566 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4567 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4568 to a functions expecting a PATHNAME-DESIGNATOR.
4569 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4570 lambda lists. (thanks to Alexey Dejneka)
4571 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4572 functions so that EXPORTing the name of the class doesn't cause
4573 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4574 to Antonio Martinez for reporting this)
4575 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4576 constant-folded without failing an assertion. (thanks to Einar
4577 Floystad Dorum for reporting this)
4578 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4579 types are now dealt with more correctly by the compiler.
4580 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4581 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4582 behaviour analogous to RENAME-FILE. This puts its behaviour more
4583 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4585 * The fasl file version number has changed again. (because of the
4586 bug fix involving the names of PCL MAKE-INSTANCE functions)
4588 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4589 * bug fix: Floating point exceptions are treated much more
4590 consistently on the x86/Linux and PPC/Linux platforms.
4591 * Array initialization with :INITIAL-ELEMENT is now much faster for
4592 cases when the compiler cannot open code the array creation, but
4593 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4594 array accesses have also seen a speed increase.
4595 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4596 specified. (This was at the root of some bad interactions between
4597 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4599 * bug fix: Internal error arguments for undefined functions are now
4600 computed correctly on the PPC/Linux platform.
4601 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4602 Raymond Toy's patch for CMU CL)
4603 * Support for the Solaris 9 operating environment has been included
4604 (thanks to Daniel Merritt)
4605 * A very ugly but hopefully complete draft of the missing FFI chapter
4606 of the manual has been created by reformatting the corresponding
4607 CMU CL manual chapter into (currently very ugly and incoherent)
4608 DocBook and bringing it up to date for SBCL behavior. Thus, the
4609 manual is now essentially complete, at least by my extreme
4610 once-and-only-once standards, whereby it's acceptable to refer to
4611 the doc strings of SB-EXT functions as the primary documentation.
4612 * The fasl file version number has changed again, due to cleanup of
4613 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4614 is no longer a static symbol.)
4616 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4617 * SBCL now builds with OpenMCL (version 0.12) as the
4618 cross-compilation host; also, more progress has been made toward
4619 bootstrapping under CLISP.
4620 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4622 * bug 158 fixed: The compiler can now deal with integer loop
4623 increments different from 1; fixing this turned out also to fix
4625 * bug 169 fixed: no more bogus warnings about using lexical bindings
4626 despite the presence of perfectly good SPECIAL declarations (thanks
4627 to David Lichteblau)
4628 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4629 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4630 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4632 * bug 180 fixed: Method combination specifications no longer ignore
4633 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4634 * bug fix: Structure type predicate functions now check their argument
4635 count as they should.
4636 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4637 correctly. (thanks to Pierre Mai)
4638 * minor incompatible change: The --noprogrammer option is deprecated
4639 in favor of the new --disable-debugger option, which is very similar.
4640 (The major difference is that it takes effect at a slightly different
4641 time at startup, causing handling of errors in --sysinit and
4642 --userinit files will be affected differently.) The
4643 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4644 been added to allow this functionality to be controlled from ordinary
4645 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4646 maintainers, who might want to run non-interactive scripts to
4647 build SBCL cores which will later be used interactively.)
4648 * minor incompatible change: The LOAD function no longer, when given
4649 a wild pathname to load, loads all files matching that pathname.
4650 Instead, an error of type FILE-ERROR is signalled.
4652 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4653 * bug 147 fixed: The compiler preserves its block link/count
4654 invariants more correctly now so that it doesn't crash. (thanks
4656 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4658 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4659 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4660 no-value-for-this-character as NIL (as specified by ANSI).
4661 * HOST-NAMESTRING on physical pathnames now returns a string that is
4662 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4663 (thanks to Christophe Rhodes)
4664 * The Alpha port handles icache flushing more correctly. (thanks to
4666 * More progress has been made toward bootstrapping under CLISP. (thanks
4667 to Christophe Rhodes)
4668 * The fasl file format has changed again, because dynamic loading
4669 on OpenBSD (which has non-ELF object files) motivated some cleanups
4670 in the way that foreign symbols are transformed and passed around.
4671 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4672 is no longer treated as whitespace by the reader, but instead as
4673 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4674 |A
\7fB|, instead of A as it used to.
4676 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4677 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4678 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4679 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4680 this as of 0.7.1.45, but was left out of the previous news section
4681 (thanks to Dan Barlow)
4682 * SBCL now runs on the Solaris operating system on SPARC architectures
4683 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4684 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4685 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4686 * SPARC backend cleanups, allowing builds of cores optimized for V8
4687 and V9 SPARCS, and also emission of code targeted to a particular
4688 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4690 * SBCL is closer to bootstrapping under CLISP, thanks to various
4691 fixes by Christophe Rhodes.
4692 * The fasl file format has changed again, to allow the compiler's
4693 INFO database to support symbol macros.
4694 * The user manual (in doc/) is formatted into HTML more nicely.
4695 (thanks to coreythomas)
4696 * The system is smarter about SUBTYPEP relationships, especially
4697 those involving NOT types (including types such as ATOM which are
4698 represented internally using NOT types). Thus SUBTYPEP is less
4699 likely to return (VALUES NIL NIL) in general, and in particular
4700 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4702 * The fasl file format has changed again, because the internal
4703 representation of types now includes a new slot to support the new
4704 SUBTYPEP-of-NOT-types logic.
4705 * (not a change in the main branch of SBCL, but a related prototype
4706 which can hopefully be merged into the main branch of SBCL in the
4707 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4708 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4709 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4710 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4711 dispatch macro character combinations. (thanks to Alexey Dejneka)
4712 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4713 that superficially look like logical namestrings correctly.
4714 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4716 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4717 default supplied-p) for &optional and &key arguments. (thanks to
4720 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4721 * incompatible change: The compiler is now less aggressive about
4722 tail call optimization, doing it only when (> SPACE DEBUG) or
4723 (> SPEED DEBUG). (This is an incompatible change because there are
4724 programs which relied on the old CMU-CL-style behavior to optimize
4725 away their unbounded recursion which will now die of stack overflow.)
4726 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4727 for non-GENCGC systems has been increased to 20M (since that
4728 seems much closer to the likely performance optimum for modern
4729 systems than the old 4M value was)
4730 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4731 and *DEBUG-PRINT-LEVEL*
4732 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4733 of CMU CL's support for SPARC, and various endianness and other
4734 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4735 * new syntactic sugar for the Unix command line: --load foo.bar is now
4736 an alternate notation for --eval '(load "foo.bar")'.
4738 ** The system now detects stack overflow and handles it gracefully,
4739 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4740 optimization settings. (This is a good thing in general, and
4741 its introduction in this version should be particularly timely
4742 for anyone whose code fails because of suppression of tail
4744 ** The system now hunts for the C variable "environ" in a more
4745 devious way, to avoid segfaults when the C library version differs
4746 between compile time and run time. (thanks to Christophe Rhodes)
4747 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4748 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4749 ** The compiler no longer issues bogus style warnings for undefined
4750 classes in the same source file as the DEFCLASSes which defined
4751 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4753 ** fixes in CONDITION class precedence list for undefined function
4754 errors (thanks to Alexei Dejneka)
4755 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4756 correctly. (thanks to Dan Barlow)
4757 ** portability fixes aiming at bootstrapping under CLISP (thanks
4758 to Dave McDonald and Christophe Rhodes)
4759 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4760 ** fixes in type translation and and type inference (thanks to
4762 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4763 ** various fixes in the new ports (thanks to Dan Barlow)
4764 * several changes related to debugging:
4765 ** suppression of tail recursion, as noted above
4766 ** stack overflow detection, as noted above
4767 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4768 is now the default. (For some time encapsulation has been more
4769 reliable than the breakpoint-based :ENCAPSULATE NIL
4770 implementation, at least on X86 systems; and I just noticed that
4771 encapsulation also seems closer to the spirit of the ANSI
4774 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4776 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4777 up properly again. (There was a packaging bug in 0.7.0 which
4778 left their definitions in SB-SYS::LOAD-FOREIGN and
4779 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4780 vital for most things which interface to C-level interfaces,
4781 like extensions working with sockets or databases or
4782 Perl-compatible regexes or whatever, and the need to fix
4783 this bug is the main reason that 0.7.1 was released so
4785 ** DEFGENERIC is now choosier about the methods it redefines, so that
4786 reLOADing a previously-LOADed file containing DEFGENERICs does
4787 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4788 cycle now works as it should. (thanks to Alexey Dejneka)
4789 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4790 fixed by Christophe Rhodes. (He actually submitted this patch
4791 months ago, and I delayed until after 0.7.0.)
4792 ** Bug 111 (internal compiler confusion about runtime checks on
4793 FUNCTION types) was fixed by Alexey Dejneka.
4794 * Some internal cleanups (getting rid of variables which aren't
4795 needed now that the byte interpreter is gone) caused the fasl
4796 file format number to change again.
4798 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4799 * major incompatible change: The default fasl file extension, i.e. the
4800 default extension for files produced by COMPILE-FILE, has changed
4801 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4803 ** There are many changes in the implementation of the compiler.
4804 SBCL is now essentially a compiler-only implementation of ANSI
4805 Common Lisp. EVAL still "interprets" a few special cases, but
4806 almost all the interesting cases are handled by creating
4807 a LAMBDA expression, calling COMPILE on it, then calling
4808 FUNCALL on the result.
4809 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4810 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4811 Since the code is newer, there might still be some new bugs
4812 (though not as many as before Martin Atzmueller's fixes:-). But
4813 the new code is substantially simpler and clearer, and hopefully
4814 any remaining bugs will be simpler, less fundamental, and more
4815 fixable then the bugs in the old code.
4816 ** The revised compiler is still a little unsteady on its feet.
4818 *** The debugging information it produces (particularly the names
4819 of FUNCTION objects) is sometimes much less useful than what
4820 the old compiler produced.
4821 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4822 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4823 within a MACROLET) has been temporarily weakened.
4824 ** There are new compiler optimizations for various functions:
4825 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4826 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4827 *** the math functions TRUNCATE, FLOOR, and CEILING
4828 *** the function-of-all-trades COERCE
4829 Mostly these should be transparent, but there's one
4830 potentially-annoying problem (bug 117): when the compiler
4831 inline-expands a function and does type analysis on the result,
4832 it can create control paths which have type mismatches, and
4833 when it can't prove that those control paths aren't taken,
4834 it will issue WARNINGs about the type mismatches. This is
4835 a particular problem in practice for the new sequence functions.
4836 It's not clear how this should be fixed, and for now, a
4837 workaround is given in the entry for 117 in the BUGS file.
4838 ** (Because of the interaction between the two previous items --
4839 occasional inlining problems and new inline expansions -- some
4840 of the new sequence function optimizations won't really kick in
4841 completely until debugging information, and then inlining, are
4842 straightened out in some future version.)
4843 * minor incompatible changes:
4844 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4845 DIRECTORY no longer implicitly promotes NIL slots of its
4846 pathname argument to :WILD. In particular, when you ask for the
4847 contents of a directory (which you used to be able to do without
4848 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4849 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4850 ** changes in behavior that ANSI explicitly defines to be
4851 implementation dependent:
4852 *** The new compiler-only implementation still conforms with ANSI,
4853 but acts a little different than before. Besides the obvious
4854 changes in performance tradeoffs (that the cost per form passed
4855 to EVAL has gone up, and the cost per form executed by EVAL
4856 has gone down), the behavior of the system changes a little
4857 because there are no longer any interpreted function objects.
4858 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4859 e.g. doing COMPILE on the output of interactive DEFUN is
4861 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4863 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4864 has changed from (:CL) to NIL.
4865 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4866 e.g. #\Newline and #\Tab, don't have names specified in the
4867 ANSI Common Lisp standard, is now based on their ASCII symbolic
4868 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4869 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4870 are no longer used for output.
4871 ** changes in internal implementation constants:
4872 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4873 4 million. (If your application spends a lot of time GCing and
4874 you have a lot of RAM, you might want to experiment with
4875 increasing it even more.)
4876 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4877 However, almost all old code should still continue to work without
4878 immediate update, as SB-C-CALL is now a (deprecated) nickname
4880 ** Old operator names in the style DEF-FOO are now deprecated in
4881 favor of new corresponding names DEFINE-FOO, for consistency with
4882 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4883 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4884 internal symbols, but a few supported extensions like
4885 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4886 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4887 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4888 etc. as you get deeper into recursive calls to the debugger
4889 command loop, instead of the old "5]", "5]]", "5]]]"
4890 sequence. (I was motivated to do this when squabbles between
4891 ILISP and SBCL left me very deeply nested in the debugger. In the
4892 short term, this change will probably provoke more ILISP/SBCL
4893 squabbles, but hopefully it will be an improvement in the long run.)
4894 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4895 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4896 function, since declaiming return types involving aliens is
4897 (1) annoyingly messy to do by hand and (2) vital to efficient
4898 compilation of code which calls such functions.
4899 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4900 longer reexported by the SB-EXT package. They're solely useful
4901 for alien code, so it seems more logical that you should get
4902 them from the SB-ALIEN package, not in SB-EXT.
4903 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4904 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4905 features. Instead, the code that they used to control is always
4906 built into the system.
4907 * many other bug fixes
4908 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4909 advantage of the new EVAL-WHEN stuff and to clean them up in
4910 general, and they are now more ANSI-compliant in a number of
4911 ways. Martin Atzmueller is responsible for a lot of this.
4912 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4914 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4915 *** correct ERROR type for various file operations
4916 *** some fixes for Lisp streams
4917 *** DEFMETHOD syntax checking
4918 *** changing old weird representation of debug information as
4919 strings (which, among their other deficiencies, don't transform
4920 correctly when you rename packages, and don't change their
4921 print representation when you change things like *PACKAGE*
4922 and *PRINT-LENGTH*) to symbols and lists of symbols
4923 He also made several improvements and fixed several bugs in DESCRIBE.
4924 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4926 *** misbehavior of WRITE-STRING/WRITE-LINE
4927 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4928 and several other LOOP problems as well
4929 *** DIRECTORY when similar filenames are present
4930 *** DEFGENERIC with :METHOD options
4931 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4932 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4933 *** argument ordering in FIND with :TEST option
4934 *** mishandled package designator argument in APROPOS-LIST
4935 *** various problems in the backquote readmacro
4936 *** a bug in APROPOS
4937 *** probably some others that I'm not describing very well here,
4938 since the CVS log documents them by reference to sbcl-devel
4939 messages, and the SourceForge archives aren't working well.:-(
4940 ** Dan Barlow improved the Alpha port (and is making progress on the
4941 PPC port, for those of you who think different).
4942 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4943 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4944 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4945 continues to work on the SPARC port (for those of you in a position
4946 to look down upon our little PC-compatible boxes from a great height).
4947 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4948 and uses that copy, rather than the current dynamic value, when
4949 it's trying to decide whether to truncate output. Thus e.g.
4950 (let ((*print-lines* 50))
4951 (pprint-logical-block (stream nil)
4953 (let ((*print-lines* 8))
4954 (print (aref possiblybigthings i) stream)))))
4955 should now truncate the logical block only at 50 lines, instead of
4956 often truncating it at 8 lines, as it did before.
4957 * The doc/cmucl/ directory, containing old CMU CL documentation
4958 from the time of the fork, is no longer part of the base system.
4959 SourceForge has shut down its anonymous FTP service, and with it
4960 my original plan for distributing the old CMU CL documentation
4961 there. For now, if you need these files you can download an old
4962 SBCL source release and extract them from it.
4963 * The fasl file version number changed again, for dozens of reasons,
4964 some of which are apparent above.
4966 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4967 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4968 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4969 patch, so that DISASSEMBLE output is much nicer.
4970 * The code in the SB-PROFILE package now seems reasonably stable.
4971 I still haven't decided what the final interface should look like
4972 (I'd like PROFILE to interact cleanly with TRACE, since both
4973 facilities use function encapsulation) but if you have a need
4974 for profiling now, you can probably use it successfully with
4975 the current CMU-CL-style interface.
4976 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4977 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4978 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4979 link now returns the dangling link itself, and for similar
4980 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4981 link itself. (In these cases the old code signalled an error and
4982 looped endlessly, respectively.) Thus, DIRECTORY now works even
4983 in the presence of dangling and cyclic symbolic links.
4984 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4985 is now a supported extension again, since the consensus on
4986 sbcl-devel was that it can be useful for ordinary development
4987 work, not just for debugging SBCL itself.
4988 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4989 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4990 that currently-defined functions might be redefined later with
4991 different return types.
4992 * Hash tables can be printed readably, as inspired by CMU CL code
4993 of Eric Marsden and SBCL code of Martin Atzmueller.
4994 * better error handling in CLOS method combination, thanks to
4995 Martin Atzmueller porting Pierre Mai's CMU CL patches
4996 * more overflow fixes for >16Mbyte I/O buffers
4997 * A bug in READ has been fixed, so that now a single Ctrl-D
4998 character suffices to cause end-of-file on character streams.
4999 In particular, now you only need one Ctrl-D at the command
5000 line (not two) to exit SBCL.
5001 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5003 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5004 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5005 does the right thing.
5006 * The implementation of some type tests, especially for CONDITION
5007 types, is now tidier and maybe faster, due to CMU CL code
5008 originally by Douglas Crosher, ported by Martin Atzmueller.
5009 * Some math functions have been fixed, and there are new
5010 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5011 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5012 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5013 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5014 likely to be built into sbcl-0.7.0.)
5015 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5016 CL, ported to SBCL by Martin Atzmueller)
5017 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5018 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5019 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5020 * There's a new slam.sh hack to shorten the edit/compile/debug
5021 cycle for low-level changes to SBCL itself, and a new
5022 :SB-AFTER-XC-CORE target feature to control the generation of
5023 the after-xc.core file needed by slam.sh.
5024 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5025 COMPILE-FILE is no longer supported, so that now every function
5026 gets an entry point, so that block compilation looks a little
5027 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5028 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5029 returns the number of bytes consed since the system started,
5030 rather than the number consed since the first time the function
5031 was called. (The new definition parallels ANSI functions like
5032 CL:GET-INTERNAL-RUN-TIME.)
5033 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5034 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5035 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5036 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5037 * Fasl file version numbers are now independent of the target CPU,
5038 since historically most system changes which required version
5039 number changes have affected all CPUs equally. Similarly,
5040 the byte fasl file version is now equal to the ordinary
5043 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5044 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5045 is no longer recognized. I apologize for this, because it was
5046 listed in SB-EXT as a supported extension, but I found that
5047 its existing behavior was poorly specified, as well as incorrectly
5048 specified, and it looked like too much of a mess to straighten it
5049 out. I have enough on my hands trying to get ANSI stuff to work..
5050 * many patches ported from CMU CL by Martin Atzmueller, with
5051 half a dozen bug fixes in pretty-printing and the debugger, and
5052 half a dozen others elsewhere
5053 * fixed bug 13: Floating point infinities are now supported again.
5054 They might still be a little bit flaky, but thanks to bug reports
5055 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5056 as flaky as they were.
5057 * The --noprogrammer command line option is now supported. (Its
5058 behavior is slightly different in detail from what the old man
5059 page claimed it would do, but it's still appropriate under the
5060 same circumstances that the man page talks about.)
5061 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5062 are now supported, and enabled by default. Thus, the compiler can
5063 handle many floating point and complex operations much less
5064 inefficiently. (Thus e.g. you can implement a complex FFT
5066 * The compiler now detects type mismatches between DECLAIM FTYPE
5067 and DEFUN better, and implements CHECK-TYPE more correctly, and
5068 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5069 thanks to patches from Martin Atzmueller.
5070 * various fixes to make the cross-compiler more portable to
5071 ANSI-conforming-but-different cross-compilation hosts (notably
5072 Lispworks for Windows, following bug reports from Arthur Lemmens)
5073 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5074 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5075 fixed thanks to Pierre Mai's CMU CL patches.
5076 * fixes to keep the system from overflowing internal counters when
5077 it tries to use i/o buffers larger than 16M bytes
5078 * fixed bug 45a: Various internal functions required to support
5079 complex special functions have been merged from CMU CL sources.
5080 (When I was first setting up SBCL, I misunderstood a compile-time
5081 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5082 * improved support for type intersection and union, fixing bug 12
5083 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5084 more obscure bugs as well
5085 * some steps toward byte-compiling non-performance-critical
5086 parts of the system, courtesy of patches from Martin Atzmueller
5087 * Christophe Rhodes has made some debian packages of sbcl at
5088 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5089 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5090 stable, but are nonetheless usable. When he's ready, I'd be happy
5091 to add them to the SourceForge "File Releases" section. (And if
5092 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5093 * new fasl file format version number (because of changes in
5094 internal representation of (OR ..) types to accommodate the new
5095 support for (AND ..) types, among other things)
5097 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5098 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5100 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5102 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5103 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5104 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5105 * DESCRIBE now works on structure objects again.
5106 * Most function call argument type mismatches are now handled as
5107 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5108 know whether the function will be redefined before the call is
5109 executed. (The compiler could flag local calls with full WARNINGs,
5110 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5111 it doesn't keep track of enough information to know whether calls
5112 are local in this sense.)
5113 * Compiler output is now more verbose, with messages truncated
5114 later than before. (There should be some supported way for users
5115 to override the default verbosity, but I haven't decided how to
5116 provide it yet, so this behavior is still controlled by the internal
5117 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5118 src/compiler/ir1util.lisp.)
5119 * Fasl file format version numbers have increased again, because
5120 support for the Gray streams extension changes the layout of the
5121 system's STREAM objects.
5122 * The Gray subclassable streams extension now works, thanks to a
5123 patch from Martin Atzmueller.
5124 * The full LOAD-FOREIGN extension (not just the primitive
5125 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5126 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5127 but like most other programs, it defaults to copying the Unix
5128 environment from the original process instead of starting the
5129 new process in an empty environment.
5130 * Extensions which manipulate the Unix environment now support
5131 an :ENVIRONMENT keyword option which doesn't smash case or
5132 do other bad things. The CMU-CL-style :ENV option is retained
5133 for porting convenience.
5134 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5135 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5137 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5139 * A patch from Martin Atzmueller seems to have solved the SIGINT
5140 problem, and as far as we know, signal-handling now works cleanly.
5141 (If you find any new bugs, please report them!)
5142 * The system no longer defaults Lisp source file names to types
5143 ".l", ".cl", or ".lsp", but only to ".lisp".
5144 * The compiler no longer uses special default file extensions for
5145 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5146 seems to expect a single default extension for all compiled code,
5147 and there's no compelling reason to try to stretch the standard
5148 to allow two different extensions.) Instead, byte-compiled files
5149 default to the same extension as native-compiled files.
5150 * Fasl file format version numbers have increased again, because
5151 a rearrangement of internal implementation packages made some
5152 dumped symbols in old fasl files unreadable in new cores.
5153 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5154 many fewer weird special cases.
5155 * Bug #17 (differing COMPILE-FILE behavior between logical and
5156 physical pathnames) has been fixed, and some related misbehavior too,
5157 thanks to a patch from Martin Atzmueller.
5158 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5159 by Tim Moore, ported to SBCL by Martin Atzmueller.
5160 * Martin Atzmueller fixed several filesystem-related problems,
5161 including bug #36, in part by porting CMU CL patches, which were
5162 written in part by Paul Werkowski.
5163 * More compiler warnings in src/runtime/ are gone, thanks to
5164 more patches from Martin Atzmueller.
5165 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5168 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5170 * DESCRIBE now works on CONDITION objects.
5171 * The debugger now handles errors which arise when trying to print
5172 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5174 * The build system now uses an additional file, customize-target-features.lisp,
5175 to allow local modifications to the target *FEATURES* list. (The point of
5176 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5177 debugging features enabled, without having to worry about propagating it
5178 into everyone's system when I do a "cvs update".) When no
5179 customize-target-features.lisp file exists, the target *FEATURES* list
5180 should be constructed the same way as before.
5181 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5182 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5183 warn about behavior which is undefined under the ANSI spec. Note: This
5184 is specified by ANSI, but it's not very popular with programmers.
5185 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5186 macro in the SBCL sources for an example of a workaround which you
5187 might use to make portable ANSI-standard code which does what you want.
5188 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5189 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5190 when it's used as a non-toplevel form. (This is required in order
5191 to implement the DEFCONSTANT-EQX macro.)
5192 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5193 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5194 funny things, due to bugs in the implementation of EVAL-WHEN
5195 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5196 non-toplevel DEFCONSTANTs are uncommon.)
5197 * The core file version number and fasl file version number have been
5198 incremented, because the old noncompliant DEFCONSTANT behavior involved
5199 calling functions which no longer exist, and because I also took the
5200 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5201 * fixed bug 1 (error handling before read-eval-print loop starts), and
5202 redid debugger restarts and related debugger commands somewhat while
5204 ** The QUIT debugger command is gone, since it did something
5205 rather different than the SB-EXT:QUIT command, and since it never
5206 worked properly outside the main toplevel read/eval/print loop.
5207 Invoking the new TOPLEVEL restart provides the same functionality.
5208 ** The GO debugger command is also gone, since you can just invoke
5209 the CONTINUE restart directly instead.
5210 ** The TOP debugger command is also gone, since it's redundant with the
5211 FRAME 0 command, and since it interfered with abbreviations for the
5213 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5215 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5216 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5217 some porting work by Martin Atzmueller)
5218 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5219 with a boatload of patches which he ported to SBCL. Now that those
5221 ** The system tries to make sure that its low-priority messages
5222 are prefixed by semicolons, to help people who like to use
5223 syntax highlighting in their ILISP buffer. (This patch
5224 was originally due to Raymond Toy.)
5225 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5226 patches originally written by Raymond Toy.
5227 ** The compiler understands coercion between single-value and
5228 multiple-VALUES type expressions better, getting rid of some very
5229 weird behavior, thanks to patches originally by Robert MacLachlan
5230 and Douglas Crosher.
5231 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5232 lambda lists, thanks to a patch originally by Pierre Mai.
5233 ** The system no longer bogusly warns about "abbreviated type
5235 ** The compiler gets less confused by inlining and RETURN-FROM,
5236 thanks to some patches originally by Tim Moore.
5237 ** The system no longer hangs when dumping circular lists to fasl
5238 files, thanks to a patch originally from Douglas Crosher.
5239 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5240 undefined function error.
5241 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5242 in structure slot initforms) for now, documented workaround instead:-|
5243 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5244 * fixed bug 5: added stubs for various Gray stream functions called
5245 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5246 installed, at least appropriate type errors are generated
5247 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5248 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5249 consistently in DEFMETHOD forms.
5250 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5251 it doesn't seem to affect SBCL after all
5252 * The C runtime system now builds with better optimization and many
5253 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5255 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5257 * The system is now under CVS at SourceForge (instead of the
5258 CVS repository on my home machine).
5259 * The new signal handling code has been tweaked to treat register
5260 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5261 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5262 downstream, e.g. in debug-int.lisp, has implicit dependencies
5263 on the unsignedness of integer representation of machine words,
5264 and that caused the system to bomb out with infinite regress
5265 when trying to recover from type errors involving signed values,
5266 e.g. (BUTLAST '(1 2 3) -1).)
5267 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5268 (This was one of the bugs Peter Van Eynde reported back in July.)
5269 * The system now uses code inspired by Colin Walters' O(N)
5270 implementation of MAP (from the cmucl-imp@cons.org mailing
5271 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5272 inline the MAP operation, and there is more than one
5273 sequence argument to the MAP call (so that it can't just
5274 do ETYPECASE once and for all based on the type of the
5275 single sequence argument). (The old non-inline implementation
5276 of the general M-argument sequence-of-length-N case required
5277 O(M*N*N) time when any of the sequence arguments were LISTs.)
5278 * The QUIT :UNIX-CODE keyword argument has been renamed to
5279 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5280 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5282 * Raymond Wiker's patches to port dynamic loading from Linux to
5283 FreeBSD have been added.
5284 * The BUGS file is now more nearly up to date, thanks in large part
5285 to Martin Atzmueller's review of it.
5286 * The debugger now flushes standard output streams before it begins
5287 its output ("debugger invoked" and so forth).
5288 * The core version number and fasl file version number have both
5289 been incremented, because of incompatible changes in the layout
5291 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5292 used to not be called for a saved Lisp image.)
5293 * Martin Atzmueller's version of a patch to fix a compiler crash,
5294 as posted on sbcl-devel 13 September 2000, has been installed.
5295 * Instead of installing Martin Atzmueller's patch for the
5296 compiler transform for SUBSEQ, I deleted the compiler transform,
5297 and transforms for some similar consing operations.
5298 * A bug in signal handling which kept TRACE from working on OpenBSD
5300 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5301 away by constant folding
5302 * The system now defines its address space constants in one place
5303 (in the Lisp sources), and propagates them automatically elsewhere
5304 (through GENESIS and the sbcl.h file). Therefore, patching the
5305 address map is less unnecessarily tedious and error-prone. The
5306 Lisp names of address space constants have also been systematized.
5307 * CVS tags like dollar-Header-dollar have been removed from
5308 the sources, because they have never saved me trouble and
5309 they've been source of trouble working with patches and other
5310 diff-related operations.
5311 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5312 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5314 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5316 * The system has been ported to OpenBSD.
5317 * The system now compiles with a simple "sh make.sh" on the systems
5318 that it's supported on. I.e., now you no longer need to tweak
5319 text in the target-features.lisp-expr and symlinks in src/runtime/
5320 by hand, the make.sh takes care of it for you.
5321 * The system is no longer so grossly inefficient when compiling code
5322 involving vectors implemented as general (not simple) vectors (VECTOR T),
5323 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5324 which dares to use the various sequence functions on non-simple
5325 vectors, takes less of a performance hit.
5326 * There is now a primitive type predicate VECTOR-T-P
5327 to test for the (VECTOR T) type, so that e.g.
5328 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5329 can now be compiled with some semblance of efficiency. (The old code
5330 turned the type declaration into a full call to %TYPEP at runtime!)
5331 * AREF on (VECTOR T) is still not fast, since it's still compiled
5332 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5333 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5334 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5335 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5336 without making full calls to SUBTYPEP at runtime.
5337 (Some analogous efficiency issues for non-simple vectors specialized to
5338 element types other than T, or for non-simple multidimensional arrays,
5339 have not been addressed. They could almost certainly be handled the
5340 same way if anyone is motivated to do so.)
5341 * The changes in array handling break binary compatibility, so
5342 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5343 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5344 instead of (VALUES T T).
5345 * By following the instructions that Dan Barlow posted to sbcl-devel
5346 on 2 July 2000, I was able to enable primitive dynamic object
5347 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5348 functionality is not implemented (since it calls ld to resolve
5349 library references automatically, requiring RUN-PROGRAM for its
5350 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5351 try to resolve library references) is now supported.
5352 * The system now flushes the standard output streams when it terminates,
5353 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5354 them at several other probably-convenient times, e.g. in each pass of
5355 the toplevel read-eval-print loop, and after evaluating a form given
5356 as an "--eval" command-line option. (These changes were motivated by a
5357 discussion of stream flushing issues on cmucl-imp in August 2000.)
5358 * The source transform for TYPEP of array types no longer assumes
5359 that an array whose element type is a not-yet-defined type
5360 is implemented as an array of T, but instead punts, so that the
5361 type will be interpreted at runtime.
5362 * There is now some support for cross-compiling in make.sh: each of
5363 the phases of make.sh has its own script. (This should be transparent
5364 to people doing ordinary, non-cross-compile builds.)
5365 * Since my laptop doesn't have hundreds of megabytes of memory like
5366 my desktop machine, I became more motivated to do some items on
5367 my to-do list in order to reduce the size of the system a little:
5368 ** Arrange for various needed-only-at-cold-init things to be
5369 uninterned after cold init. To support this, those things have
5370 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5371 symbols with such names are now uninterned after cold init).
5372 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5373 fasl files for cold load.
5374 ** Remove the old compiler structure pooling code (which used to
5375 be conditional on the target feature :SB-ALLOC) completely.
5376 ** Redo the representation of some data in cold init to be more compact.
5377 (I also looked into supporting byte compiled code at bootstrap time,
5378 which would probably reduce the size of the system a lot, but that
5379 looked too complicated, so I punted for now.)
5380 * The maximum signal nesting depth in the src/runtime/ support code has
5381 been reduced from 4096 to 256. (I don't know any reason for the very
5382 large old value. If the new smaller value turns out to break something,
5383 I'll probably just bump it back up.)
5384 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5386 * Many, many bugs reported by Peter Van Eynde have been added to
5387 the BUGS list; some have even been fixed.
5388 * While enabling dynamic object file loading, I tried to make the
5389 code easier to understand, renaming various functions and variables
5390 with less ambiguous names, and changing some function calling
5391 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5392 * While trying to figure out how to do the OpenBSD port, I tried to
5393 clean up some of the code in src/runtime/. In particular, I dropped
5394 support for non-POSIX signal handling, added various comments,
5395 tweaked the code to reduce the number of compilation warnings, and
5396 renamed some files to increase consistency.
5397 * To support the new automatic configuration functionality in make.sh,
5398 the source file target-features.lisp-expr has been replaced with the
5399 source file base-target-features.lisp-expr and the machine-generated
5400 file local-target-features.lisp-expr.
5401 * fixed a stupid quoting error in make.sh so that using CMU CL
5402 "lisp -batch" as cross-compilation host works again
5404 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5406 * DESCRIBE no longer tries to call itself recursively to describe
5407 bound/fbound values, so that it no longer fails on symbols which are
5408 bound to themselves (like keywords, T, and NIL).
5409 * DESCRIBE now works on generic functions.
5410 * The printer now prints less-screwed-up representations of closures
5411 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5412 * A private symbol is used instead of the :EMPTY keyword previously
5413 used to mark empty slots in hash tables. Thus
5414 (DEFVAR *HT* (MAKE-HASH-TABLE))
5415 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5416 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5417 now does what ANSI says that it should. (You can still get
5418 similar noncompliant behavior if bang on the hash table
5419 implementation with all the symbols you get back from
5420 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5421 This breaks binary compatibility, since tests for equality to
5422 :EMPTY are wired into things like the macroexpansion of
5423 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5425 * There's now a minimal placeholder implementation for CL:STEP,
5426 as required by ANSI.
5427 * An obscure bug in the interaction of the normal compiler, the byte
5428 compiler, inlining, and structure predicates has been patched
5429 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5430 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5432 * Missing ordinary arguments in a macro call are now detected even
5433 when the macro lambda list contains &KEY or &REST.
5434 * The debugger no longer complains about encountering the top of the
5435 stack when you type "FRAME 0" to explicitly instruct it to go to
5436 the top of the stack. And it now prints the frame you request even
5437 if it's the current frame (instead of saying "You are here.").
5438 * As specified by ANSI, the system now always prints keywords
5439 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5441 * The default initial SIZE of HASH-TABLEs is now smaller.
5442 * Type information from CLOS class dispatch is now propagated
5443 into DEFMETHOD bodies, so that e.g.
5444 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5446 is now basically equivalent to
5447 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5448 (DECLARE (TYPE SINGLE-FLOAT X))
5450 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5451 operation, without having to do run-time type dispatch.
5452 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5453 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5454 * Since I don't seem to be making big file reorganizations very often
5455 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5456 is overflowing my ability to conveniently back them up), I've finally
5457 checked the system into CVS. (The CVS repository is on my home system,
5458 not at SourceForge -- putting it on SourceForge might come later.)
5459 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5460 high-level GC-NOTIFY-FOO functions send their output. (There's
5461 still very little control of where low-level verbose GC functions
5462 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5463 less than it used to -- the GC-NOTIFY-FOO functions are now under
5464 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5465 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5466 in only one place in the source code, and propagates it automatically
5467 everywhere that it's needed. Thus e.g. when I bump the version from
5468 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5469 * The C source files now include boilerplate legalese and documentation
5470 at the head of each file (just as the Lisp source files already did).
5471 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5472 to his page will be replaced with a link to his new CLiki service.
5474 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5476 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5477 * The build process now looks for GNU make under the default name "gmake",
5478 instead of "make" as it used to. If GNU make is not available as "gmake"
5479 on your system, you can change this default behavior by setting the
5480 GNUMAKE environment variable.
5481 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5482 can build without error under CMU CL.
5484 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5486 * There is now a partial SBCL user manual (with some new text and some
5487 text cribbed from the CMU CL manual).
5488 * The beginnings of a profiler have been added (starting with the
5489 CMU CL profiler and simplifying and cleaning up). Eventually the
5490 main interface should be through the TRACE macro, but for now,
5491 it's still accessed through vaguely CMU-CL-style functions and macros
5492 exported from the package SB-PROFILE.
5493 * Some problems left over from porting CMU CL to the new
5494 cross-compilation bootstrap process have been cleaned up:
5495 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5496 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5497 part when getting rid of the compiler *BACKEND* stuff.)
5498 ** The value of *NULL-TYPE* was screwed up, because it was
5499 being initialized before the type system knew the final
5500 definition of the 'NULL type. This screwed up several key
5501 optimizations in the compiler, causing inefficiency in all sorts
5502 of places. (I found it because I wanted to understand why
5503 GET-INTERNAL-RUN-TIME was consing.)
5504 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5505 PROCLAIM FTYPE information. Unfortunately this broke binary
5506 compatibility again, since now the forms output by DEFGENERIC
5507 to refer to functions which didn't exist in 0.6.3.
5508 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5509 can use the new (as of 0.6.3) transform for SOME into MAP into
5511 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5512 values to (INTEGER 0 1000000), so that the time code will no longer
5513 occasionally get blown up by Linux returning 1000000 microseconds
5514 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5515 its output conform to the ANSI spec. (Alas, this makes its output
5516 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5517 * A full call to MAP NIL with a single sequence argument no longer conses.
5518 * fixes to problems pointed out by Martin Atzmueller:
5519 * The manual page no longer talks about multiprocessing as though
5520 it were currently supported.
5521 * The ILISP support patches have been removed from the distribution,
5522 because as of version 5.10.1, ILISP now supports SBCL without us
5523 having to maintain patches.
5524 * added a modified version of Raymond Toy's recent CMU CL patch for
5525 EQUALP comparison of HASH-TABLE
5527 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5529 * The system still can't cross-compile itself with
5530 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5531 entails), but at least it can compile more of itself that way
5532 than it used to be able to, and various buglets which were uncovered
5533 by trying to cross-compile itself that way have now been fixed.
5534 * This release breaks binary compatibility again. This time
5535 at least I've incremented the FASL file format version to 2, so that the
5536 problem can be detected reliably instead of just causing weird errors.
5537 * various new style warnings:
5538 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5539 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5540 ** using the lexical binding of a variable named in the *FOO* style
5541 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5542 as specified by ANSI.
5543 * *RANDOM-STATE* is no longer automatically initialized from
5544 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5545 default behavior of the system is to repeat its behavior every time
5546 it's run. If you'd like to change this behavior, you can always
5547 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5548 old convention there was no comparably easy way to get the system to
5549 repeat its behavior every time it was run.
5550 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5551 FTYPE declarations has been removed, in favor of their ANSI
5552 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5553 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5554 the types of their sequence arguments can be determined at compile time.
5555 This is done through a new open code expansion for MAP which eliminates
5556 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5557 argument types can be determined at compile time.
5558 * The optimizer now transforms COERCE into an identity operation when it
5559 can prove that the coerced object is already of the correct type. (This
5560 can be a win for machine generated code, including the output of other
5561 optimization transforms, such as the MAP transform above.)
5562 * Credit information has been moved from source file headers into CREDITS.
5563 * Source file headers have been made more standard.
5564 * The CASE macro now compiles without complaining even when it has
5567 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5569 * (Note that the way that the PCL macroexpansions were rewritten
5570 to accommodate the change in DEFGENERIC below breaks binary
5571 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5572 not run under sbcl-0.6.2. Once we get out of alpha releases,
5573 i.e. hit release 1.0.0, we'll probably try to maintain binary
5574 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5575 and sbcl-1.4.4. Until then, however, it might be fairly common
5576 for maintenance releases to break binary compatibility.)
5577 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5579 * The reporting of unhandled signals has been changed to print some
5580 explanatory text as well as the report form. (Previously only
5581 the report form was printed.)
5582 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5583 it defines, so that the compiler no longer issues undefined function
5584 warnings for compiled-but-not-yet-loaded generic functions.
5585 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5586 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5587 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5588 section of the ANSI spec are supported.
5589 * The "" nickname for the "KEYWORD" package has been removed.
5590 The reader still handles symbol tokens which begin with a package marker
5591 as keywords, but it doesn't expose its mechanism for doing so in the
5592 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5593 * The system now issues STYLE-WARNINGs for contradictory TYPE
5594 proclamations. (Warnings for contradictory FTYPE proclamations would
5595 be nice too, but those can't be done usefully unless the type system
5596 is made smarter about FUNCTION types.)
5597 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5598 systematized, so that "*target-*.lisp is supposed to exist only on the
5599 target and imply that there's a related file which exists on the
5600 host, and *host-*.lisp is supposed to exist only on the host and imply
5601 that there's a related file which exists on the target. This involves a
5602 lot of renaming. Hopefully the acute confusion caused by the renaming
5603 will be justified by the reduction in chronic confusion..
5604 ** runtime-type.lisp -> early-target-type.lisp
5605 ** target-type.lisp -> late-target-type.lisp
5606 ** early-host-format.lisp -> early-format.lisp
5607 ** late-host-format.lisp -> late-format.lisp
5608 ** host-error.lisp -> misc-error.lisp
5609 ** early-error.lisp -> early-target-error.lisp
5610 ** late-error.lisp -> late-target-error.lisp
5611 ** host-defboot.lisp -> early-defboot.lisp
5612 ** code/misc.lisp -> code/target-misc.lisp
5613 ** code/host-misc.lisp -> code/misc.lisp
5614 ** code/numbers.lisp -> code/target-numbers.lisp
5615 ** code/early-numbers.lisp -> numbers.lisp
5616 ** early-host-type.lisp -> early-type.lisp
5617 ** late-host-type.lisp -> late-type.lisp
5618 ** host-typep.lisp -> typep.lisp
5619 ** load.lisp -> target-load.lisp
5620 ** host-load.lisp -> load.lisp
5621 ** host-disassem.lisp -> disassem.lisp
5622 ** host-insts.lisp -> insts.lisp
5623 ** byte-comp.lisp -> target-byte-comp.lisp
5624 ** host-byte-comp.lisp -> byte-comp.lisp
5625 ** host-signal.lisp -> signal.lisp
5626 ** host-defstruct.lisp -> defstruct.lisp
5627 ** late-target-type.lisp -> deftypes-for-target.lisp
5628 Furthermore, several other previously target-only files foo.lisp (e.g.
5629 hash-table.lisp and random.lisp) have been split into a target-and-host
5630 foo.lisp file and a target-only target-foo.lisp file, with their key type
5631 definitions in the target-and-host part, so that the cross-compiler will
5632 know more about target types.
5633 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5634 gone away. In their place are various *BACKEND-FOO* variables
5635 corresponding to the slots of the old structure.
5636 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5637 into the target SBCL has been fixed.
5638 * The chill.lisp system for loading cold code into a running SBCL
5640 * Support for the CMU CL "scavenger hook" extension has been removed.
5641 (It was undocumented and unused in the CMU CL sources that SBCL was
5642 derived from, and stale in sbcl-0.6.1.)
5643 * Various errors in the cross-compiler type system were detected
5644 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5645 (enabling various consistency checks). Many of them were fixed,
5646 but some hard problems remain, so the compiler is back to
5647 running without *TYPE-SYSTEM-INITIALIZED* for now.
5648 * As part of the cross-compiler type system cleanup, I implemented
5649 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5650 * I have started adding UNCROSS calls throughout the type system
5651 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5652 on cross-compiler input files will be able to go away, and various
5654 * CONSTANTP now returns true for quoted forms (as explicitly required
5657 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5659 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5660 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5661 (MAKE-LIST -1). In the longer term, it ought to become true
5662 that declarations are assertions even at SAFETY 1. For now, it's not
5663 quite true even at SAFETY 3, but it's at least more nearly true..
5664 (Note that this change seems to increases the size of the system by
5665 O(5%) and to decrease the speed of the compiler by 20% or more.)
5666 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5667 for the problem of printing dozens of lines of distracting information
5668 about low-level system machinery as part of the top stack frame
5669 on entry to the debugger when an undefined function was called.
5670 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5671 is not reset to COMMON-LISP-USER.
5672 * Compilation of stuff related to dyncount.lisp has been made conditional
5673 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5674 smaller. The various dyncount-related symbols have been moved into
5675 a new "SB-DYNCOUNT" package.
5676 * tty-inspect.lisp has been renamed to inspect.lisp.
5677 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5678 feature has gone away. (When we eventually port to other flavors of
5679 libc and/or Unix, we'll try to make the differences between flavors
5680 invisible at the user level.)
5681 * Various other *FEATURES* tags, and/or their associated conditionals,
5682 have been removed if obsolescent, or given better documentation, or
5683 sometimes given more-mnemonic names.
5685 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5687 * tidied up "make.sh" script
5688 * tidied up system directory structure
5689 * better "clean.sh" behavior
5690 * added doc/FOR-CMUCL-DEVELOPERS
5691 * many many small tweaks to output format, e.g. removing possibly-confusing
5692 trailing #\. character in DESCRIBE-INSTANCE
5693 * (EQUALP #\A 'A) no longer signals an error.
5694 * new hashing code, including EQUALP hashing
5695 * tidied up Lisp initialization and toplevel
5696 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5697 * command line argument processing
5698 * added POSIX-GETENV function to deal with Unix-ish environment variables
5699 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5700 terminating SBCL on EOF
5701 * non-verbose GC by default
5702 * There is no more "sbcl" shell script; the sbcl file is now the C
5703 runtime executable (just like CMU CL).
5704 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5706 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5707 symbol and package information as Lisp native symbol and package objects
5708 instead of strings naming symbols and strings naming packages. This way,
5709 whenever packages are renamed (as in warm init), debug information is
5710 transformed along with everything else.
5711 * tweaked the optimization policy declarations which control the building
5712 of SBCL itself. Now, among other things, the system no longer saves
5713 source location debugging information. (This helps two problems at once
5714 by reducing SBCL size and by keeping SBCL from trying to look for its
5715 sources -- which may not exist -- when reporting errors.)
5716 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5717 debugging and testing purposes
5718 * cleaned up printing, making the printer call PRINT-OBJECT for
5719 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5720 methods, giving nearly-ANSI behavior
5721 * converted almost all special variables to use *FOO* naming convention
5722 * deleted PARSE-TIME functionality, since it can be done portably
5723 * moved some files out of cold init into warm init
5724 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5726 * regularized formatting of source files
5727 * added an install.sh script
5728 * fixed ridiculous memory usage of cross-compiler by making
5729 compiler/alloc.lisp not try to do pooling unless it can hook
5730 itself into the GC of the cross-compilation host. Now the system
5731 builds nicely on my old laptop.
5732 * added :SB-ALLOC in target-features.lisp-expr
5733 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5734 was not implemented)
5735 * re-did condition handling and note reporting in the compiler. Notes
5736 are no longer handled by signalling conditions. Style warnings
5737 and warnings are handled more correctly and reported in such a way
5738 that it's easy to find one or the other in your output (so that you
5739 can e.g. figure out which of many problems caused COMPILE-FILE to
5741 * changed the severity of several compiler warnings from full WARNING
5742 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5743 compiler note reporting so that it doesn't use the condition system
5744 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5745 COMPILE-FILE command)
5746 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5747 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5748 no longer supported, since their implementation was deeply intertwingled
5749 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5750 * removed bogus "support" for compiler macros named (SETF FOO), and
5751 removed the compiler macro for SETF INFO (but only after making a fool
5752 of myself on the cmucl-imp mailing list by posting a bogus patch for
5753 DEFINE-COMPILER-MACRO..)
5754 * Compiled files containing forms which have side effects on the Lisp
5755 reader (such as DEFPACKAGE forms) are now handled more correctly.
5756 (Compiler queuing of top level lambdas has been suppressed by setting
5757 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5758 * deleted various currently-unused source files, e.g. gengc.lisp. They
5759 may be added back at some point e.g. when porting to other architectures,
5760 but until they are it's distracting to distribute them and to try to
5762 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5763 there were so many of them they're just distractions, and UNCROSS is
5764 known to be able to handle the current sources
5765 * moved PROFILE functionality into TRACE, so that it will be clear
5766 how the wrapping and unwrapping of functions when you profile them
5767 interacts with the wrapping and unwrapping of functions when you
5768 trace them. (Actually, the functionality isn't there yet, but at least
5769 the interface specification is there. Hopefully, the functionality will
5770 arrive with some future maintenance release.)
5771 * removed host-oops.lisp
5772 * changed signature of QUIT function to allow UNIX-CODE argument
5773 * fixed READ-SEQUENCE bug
5774 * tweaked verbose GC output so that it looks more like the progress
5775 output that ANSI specifies for functions like LOAD
5776 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5777 * added <http://sbcl.sourceforge.com> to the banner information printed by