1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.41
3 * optimization: the default implementation of
4 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
5 * enhancement: Explicit memory barrier operations are now available for use
6 by multithreaded code. See documentation for details.
7 * enhancement: Experimental support for threading on Linux/PPC.
8 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
10 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
11 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
12 cached, leading to many fewer expensive calls to
13 COMPUTE-APPLICABLE-METHODS.
14 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
15 CLASS argument, search for and call an appropriate optimized ctor function
17 * bug fix: WRITE always returns the correct value.
19 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
20 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
21 * bug fix: Name conflicts between symbols passed as arguments to a single
22 call to IMPORT no longer add multiple symbols with the same name to the
23 package (detectable via DO-SYMBOLS).
24 * bug fix: support building without the dlshim on darwin x86 and x86-64
26 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
28 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
29 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
31 * bug fix: linkage-table entries on PPC now no longer overflow their
32 space allocation (potentially causing crashes if they are written out
34 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
35 platforms, preventing the GC from seeing stale pointers on the control
36 stack in subsequent GCs (which would, and does, break invariants).
37 * bug fix: 32-bit unicode external formats now work on big-endian systems.
38 * bug fix: Literal characters with code points greater than about 32767
39 now work on PPC UNICODE builds.
40 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
41 high order bits are explicitly cleared out. In some contrived situations,
42 this could lead to wrong results in mixed real/complex float arithmetic.
43 * bug fix: Fix function/macro redefinition warnings when building with
44 clisp. (lp#576787, thanks to Josh Elsasser)
45 * new platform: experimental support for ppc/openbsd (thanks to Josh
47 * bug fix: Floating-point traps now work on ppc/linux.
49 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
50 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
51 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
52 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
53 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
54 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
56 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
57 contain additional data structures and tools for concurrent programming;
58 at the moment it contains a lock-free queue, and a lock-free mailbox
60 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
61 GET-MUTEX but takes &key rather than &optional parameters. Also added
62 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
64 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
65 SB-THREAD:WAIT-ON-SEMAPHORE.
66 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
68 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
69 conditions to defer the deadline for forever.
70 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
72 * enhancement: errors from NO-APPLICABLE-METHOD and
73 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
74 generic function call.
75 * enhancement: SB-BSD-SOCKET improvements
76 ** sockets and socket streams now have a more informative printed
77 representation based on the corresponding SOCKET-NAME and
79 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
81 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
82 CL:CLOSE when appropriate, and no longer disassociates the stream
83 from the socket if close failed. (lp#543951)
84 * improvements to the instrumenting profiler
85 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
86 ** optimization: counters no longer use locks for the overflow mode.
87 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
88 incurred an off-by-one miscount.
89 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
90 * enhancement: improved DEFMETHOD pretty-printing.
91 * enhancement: perform range reduction when arguments are too large for
92 x87's transcendentals (instead of returning 0). (lp#327192)
93 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
94 some of CL-PPCRE's macros. (lp#570079)
95 * enhancement: our machine code is slightly less hostile to valgrind on
97 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
98 to Robert Swindells and Aleksej Saushev)
99 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
100 * bug fix: a rare case of startup-time page table corruption.
101 * bug fix: a semaphore with multiple waiters and some of them unwinding due
102 to timeouts could be left in an inconsistent state.
103 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
104 * bug fix: misoptimization of multiplication by one in
105 (SB-C::FLOAT-ACCURACY 0) policies.
106 * bug fix: miscounts in SB-PROFILE.
107 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
108 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
109 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
110 up itself" (March 2010) for further details.
111 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
112 against length of the list if the element is found before the specified
113 END is reached. (thanks to Alec Berryman, lp#554385)
114 * bug fix: errors signalled during package graph modification no longer
115 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
116 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
117 :SB-DOC feature. (lp#552564)
118 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
119 * bug fix: more robust runtime executable path detection. (lp#375549)
120 * bug fix: GCD always returns positive values. (lp#413680)
121 * bug fix: Converting division to multiplication by reciprocal handles
123 * bug fix: We were too eager in eliding range reduction tests on x87.
124 The maximal magnitude is 2^63, not 2^64.
125 * bug fix: Transforms for TRUNCATE don't die when the result is completely
127 * bug fix: Maybe restore buildability on Alpha.
128 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
130 * bug fix: RANDOM-STATE can be printed readably again.
131 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
132 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
133 types) could result in type mismatches during compilation.
135 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
136 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
137 stack frame thrown from.
138 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
139 compiler optimization qualities inside dynamic extent of its body.
140 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
141 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
143 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
144 constraint propgation, allowing better compilation eg. when used to
145 access structures with WITH-SLOTS. (lp#520366)
146 * optimization: the compiler is now more aware of the type of the underlying
147 storage vector for multidimensional simple arrays resulting in better code
148 for accessing such arrays.
149 * optimization: passing NIL as the environment argument to TYPEP no longer
150 inhibits optimizing it. (lp#309788)
151 * optimization: more efficient register usage when handling single-float
152 arguments on x86-64. (thanks to Lutz Euler)
153 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
154 pre-allocated temporary vectors. (lp#496249)
155 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
156 in :INITIAL-CONTENTS. (lp#523612)
157 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
158 functions. (lp#524707)
159 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
160 WITH-SLOTS usages during compilation.
161 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
162 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
163 all x86oid platforms with :UD2-BREAKPOINTS target feature.
164 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
165 instruction (tested on x86oid linux with ud2-breakpoints).
166 * bug fix: slam.sh now works on win32.
167 * bug fix: better differences of numeric types. (lp#309124)
168 * bug fix: arrays declared intersection and union types can have their
169 upgraded element type derived. (lp#316078)
170 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
171 threads started during profiling. (lp#472499)
172 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
174 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
175 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
176 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
177 values instead of signaling an error. (lp#309093)
178 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
180 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
181 declarations (lp#497321)
182 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
183 and failed to detect circular lists (lp#452008)
184 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
186 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
187 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
188 due to it, so that handlers can run.
189 * bug fix: reparsing undefined types if they have become defined since
191 * bug fix: missing &REST type in a proclamation for a function with both
192 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
193 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
194 expanded calls (lp#542174)
195 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
196 than just at toplevel form.
198 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
199 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
200 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
201 but work on type specifiers.
202 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
203 to name a type specifier.
204 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
205 specifier is valid where "valid" basically means "would be accepted as
206 second argument of TYPEP".
207 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
208 returns the function's declared, or derived FTYPE.
209 * new feature: SB-POSIX now supports accessing the d_ino member of
210 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
211 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
212 provide for seeding a RANDOM-STATE object with user-provided data or
213 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
214 attempt to initialize the returned state from the operating system's
215 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
216 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
217 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
218 * bug fix: Fix grammar and style issues for the docstrings of
219 printer-related variables and functions. (Thanks to mon_key; launchpad
221 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
223 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
224 in a row even though a handler defered the deadline long into the
226 * bug fix: A deadline handler was run without interrupts enabled for a
227 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
228 in infinitely spinning, non-killable threads.
229 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
230 before reaching the erring stack frame.
231 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
232 real power. (launchpad bug lp#525949)
233 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
234 GENCGC platforms. (launchpad bug lp#529014)
235 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
236 (launchpad bug lp#525916)
237 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
238 (Thanks to Robert Goldman)
240 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
241 * optimization: ROUND with a single single-float or double-float argument
242 is properly inlined when possible.
243 * optimization: Slightly better code is generated for integer<->float
244 conversions and for single-float<->double-float conversions on x86-64.
245 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
246 code for 32-bit and 64-bit rotations on x86-64.
247 * bug fix: The install script changes the ownership of directories as well
248 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
249 launchpad bug lp#508485)
250 * bug fix: TRUNCATE with a single single-float or double-float argument is
251 properly inlined when possible. (launchpad bug lp#489388)
252 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
253 no longer causes a compiler error on x86 and ppc.
254 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
255 always relative to *READTABLE* rather than the passed argument.
257 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
258 * minor incompatible change: threading support is now enabled by default
260 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
262 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
263 are now caught and reported just like errors during macroexpansion.
264 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
265 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
266 * enhancement: ASDF systems can now depends on SB-QUEUE.
267 * fixes and improvements related to Unicode and external formats:
268 ** bug fix: error handling and restart usage in the ucs-2 external format
270 ** there is now an implementation of the ucs-4 external format.
271 ** the utf-16 and utf-32 external formats are supported.
272 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
273 in the environment. setenv() and unsetenv() are also provided. (reported by
274 Fare Rideau; launchpad bug lp#460455)
275 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
276 loading. This ensures sensible errors for .FASL files from other
277 implementations on case-insensitive filesystems. (reported by Willem
278 Broekema; launchpad bug lp#489417)
279 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
280 Willem Broekema; launchpad bug lp#489698).
281 * bug fix: some minor code rearrangements to reenable warning-free building
282 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
283 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
285 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
288 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
289 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
290 * improvement: support O_LARGEFILE access to files larger than 2GB on
291 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
292 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
293 definitions for methods specializing on the passed class itself.
294 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
295 definitions for methods specializing on the passed class itself, or on
297 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
298 about itself during the build (e.g. for M-? in Slime), if this flag is
299 enabled in customize-target-features.lisp. This will increase the core
300 size by about 5-6mb, though, so it's mostly interesting to SBCL
302 * new feature: various GENCGC tuning parameters have been experimentally
303 documented and exported from SB-EXT. See documentation for details.
304 * fixes and improvements related to Unicode and external formats:
305 ** the Unicode character database has been upgraded to the
306 Unicode 5.2 standard, giving names and properties to a number of new
307 characters, and providing a few extra characters with case
309 ** improvement: restarts for providing replacement input/output on coding
310 errors for fd-stream external formats.
311 ** improvement: where :<encoding> is a keyword corresponding to an
312 external format the system supports, it is now possible to specify
313 (:<encoding> :replacement <character>) as an external format which will
314 automatically substitute <character> on encoding or decoding errors for
315 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
317 ** improvement: the file streams underlying the standard streams (such as
318 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
319 which uses the replacement mechanism to handle encoding errors,
320 preventing various infinite error chains and unrecoverable I/O
322 ** minor incompatible change: the utf-8 external format now correctly
323 refuses to encode Lisp characters in the surrogate range (char-codes
324 between #xd800 and #xdfff).
325 ** fix a typo preventing conversion of strings into octet vectors
326 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
328 ** fix a bug in the octet multibyte handling of decoding errors and the
329 USE-VALUE restart. (launchpad bug lp#314939)
330 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
331 restart on fd-stream decoding errors.
332 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
333 error is near the end of file.
334 ** fix a double-error case in unibyte octet conversions, when the first
335 use of USE-VALUE is ignored.
336 ** fix bugs in handling of undefined code points in unibyte encodings.
337 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
338 streams after an UNREAD-CHAR.
339 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
340 object is allocated in a boxed region of dynamic space.
341 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
342 fork with multiple Lisp threads running is made, instead of going
343 ahead with unpredictable consequences. (reported by Leslie Polzer)
344 * bug fix: uses of slot accessors on specialized method parameters within
345 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
346 error while finalizing the class. This fix may cause classes with slot
347 accessors to be finalized later than previously. (reported by Lars Rune
348 Nøstdal; launchpad bug lp#473699)
349 * bug fix: restore buildability on the MIPS platform. (regression from
350 1.0.30.38, reported by Samium Gromoff)
351 * bug fix: inspecting closures is less likely to fail with a type error.
352 * bug fix: no timer starvation when setting the system clock back.
353 (launchpad bug lp#460283)
354 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
355 standard pprint dispatch table as specified by CLHS.
356 * bug fix: give CLISP a hint about a type declaration to enable it to build
357 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
359 * bug fix: correctly dump literal objects in defaulting forms of arglists.
360 (reported by Attila Lendvai; launchpad bug lp#310132)
361 * bug fix: distinguish in type specifiers between arrays that might be
362 complex and arrays that are definitely complex. (launchpad bug lp#309129)
363 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
364 type. (reported by Levente Mészáros; launchpad bug lp#485972)
365 * bug fix: setting the value of a symbol-macro within a method in the
366 presence of type declarations works properly again. (reported by Iban
367 Hatchondo; launchpad bug lp#485019)
369 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
370 * optimization: faster FIND and POSITION on strings of unknown element type
371 in high SPEED policies. (thanks to Karol Swietlicki)
372 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
374 * improvement: better error signalling for bogus parameter specializer names
375 in DEFMETHOD forms (reported by Pluijzer)
376 * bug fix: DELETE-FILE once again works on logical pathnames (regression
378 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
380 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
381 removes previous default initargs (reported by Lars Rune Nøstdal and
383 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
384 lambda-lists. (reported by Peter Seibel)
385 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
386 correctly when starting from an executable core without saved runtime
387 options (reported by Faré Rideau, thanks to Zach Beane)
388 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
389 an optimization note instead. (reported by Martin Cracauer)
390 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
391 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
392 new process group if it doesn't need to share stdin with the sbcl
393 process. (thanks to Leslie Polzer)
394 * bug fix: SATISFIES could be misoptimized to refer to a local function.
395 (reported by Stanislaw Halik)
397 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
398 * improvement: stack allocation is should now be possible in all nested
399 inlining cases: failure to stack allocate when equivalent code is manually
400 open coded is now considered a bug.
401 * improvements related to Unicode:
402 ** the Unicode character database has been upgraded to the
403 Unicode 5.1 standard, giving names and properties to a number of new
404 characters, and providing a few extra characters with case
406 ** the system now recognizes and produces names for Unicode Hangul
408 ** the EBCDIC-US external-format is now supported for octet operations
409 (as well as for stream operations).
410 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
411 be used to output toplevel compile-time effects into a separate .CFASL
413 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
414 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
416 * optimization: TRUNCATE on known single- and double-floats is upto 25%
418 * optimization: division of floating point numbers by constants uses
419 multiplication by reciprocal when an exact reciprocal exists.
420 * optimization: multiplication of single- and double-floats floats by
421 constant two has been optimized.
422 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
423 sufficient type information is available. (thanks to Leslie Polzer)
424 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
425 known structure objects are as efficient as defstruct generated accessors.
426 * optimization: unused vector creation can now be optimized away.
427 * improvement: ASDF systems can now depends on SB-INTROSPECT.
428 * improvement: a STYLE-WARNING is signalled when a generic function
429 clobbers an earlier FTYPE proclamation.
430 * improvement: the compiler is able to track the effective type of
431 generic function across method addition and removal even in the
432 absence of an explicit DEFGENERIC.
433 * improvement: DESCRIBE now reports on symbols naming undefined
434 but assumed or declared function as well.
435 * improvement: recompilation of systems using SB-GROVEL now works
436 (thanks to Leslie Polzer)
437 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
438 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
440 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
441 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
442 well as user defined declaration names.
443 ** VARIABLE-INFORMATION is now aware of alien variables.
444 * improvement: improved address space layout on OpenBSD (thanks to Josh
446 * improvement: pretty-printing of various Lisp forms has been improved
447 (thanks to Tobias Rittweiler)
448 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
449 unused were deleted in safe code. (reported by John Fremlin)
450 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
452 * bug fix: some out-of-line array predicates were missing (reported by
454 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
456 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
457 (thanks to Larry D'Anna)
458 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
459 as well. (reported by Josh Elsasser)
460 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
461 leading to possible attempts to delete the same file twice. See docstring
462 on DELETE-FILE for details. (reported by John Fremlin)
463 * bug fix: DELETE-FILE once again deletes the file named by the pathname
464 designator argument, rather than its truename. (reported by Luis
466 * bug fix: the low-level debugger had 32-bit assumptions and was missing
467 information about some array types. (thanks to Luis Oliveira)
468 * bug fix: moderately complex combinations of inline expansions could
469 be miscompiled if the result was declared to be dynamic extent.
470 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
471 form (+ <variable> <integer>) were miscompiled under certain
473 * bug fix: in some cases no compiler note about failure to stack allocate
474 was emitted, even if the objects were in fact heap allocated.
475 * bug fix: minor violation of "otherwise inaccessible" rule for stack
476 allocation could cause objects users might reasonably expect to
477 be heap allocated to be stack allocated.
478 * bug fix: DESCRIBE signalled an error for generic functions under
479 certain circumstances. (thanks to Leslie Polzer)
480 * bug fix: Fixed spelling of an error message.
482 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
483 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
484 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
485 of SB-THREAD:THREAD-ERROR-THREAD.
486 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
487 * new feature: docstrings for local and anonymous functions are no longer
488 discarded. (thanks to Leslie Polzer)
489 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
490 values in other threads.
491 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
492 about object allocation.
493 * optimization: division of a real float by a complex float is implemented
494 with a specialised code sequence.
495 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
496 keywords is an order of magnitude faster.
497 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
498 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
499 methods, and similarly for non-standard metaclass classes as long as there
500 are no methods additional on MAKE-INSTANCE.
501 * optimization: more efficient type-checks for FIXNUMs when the value
502 is known to be a signed word on x86 and x86-64.
503 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
504 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
506 * optimization: compiler is smarter about delegating argument type checks to
508 * optimization: several character functions are now compiled somewhat more
509 efficiently. (reported by Lynn Quam)
510 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
511 * improvement: less unsafe constant folding in floating point arithmetic,
512 especially for mixed complex/real -float operations.
513 * optimization: constant double and single floats are stored in native
514 unboxed format on x86[-64].
515 * optimization: smarter code for arithmetic operations with constant floats,
516 complex floats, or integers on x86[-64].
517 * optimization: smarter code for conjugate/multiplication of float complexes
518 and abs/negate of floats on x86-64.
519 * optimization: more efficient complex float and real float operations on
521 * improvement: complex float division is slightly more stable.
522 * improvement: DESCRIBE output has been reworked to be easier to read and
523 contains more pertinent information.
524 * improvement: failure to provide requested stack allocation compiler notes
525 provided in all cases (requested stack allocation not happening without a
526 note being issued is now considered a bug.)
527 * bug fix: SB-POSIX exports the documented types and functions
528 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
529 types. (reported by "abhi")
530 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
531 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
532 (thanks to Paul Khuong)
533 * bug fix: looping around HANDLER-CASE could silently consume stack space
534 on each iteration. (reported by "foobar")
535 * bug fix: better error signalling when calls to functions seeking elements
536 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
537 (reported by Tobias Rittweiler)
538 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
539 directory components now works as it used to. (various prolems reported by
540 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
541 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
542 (reported by Elliot Slaughter, thanks to Stas Boukarev)
543 * bug fix: bogus undefined variable warnings from fopcompiled references to
544 global variables. (thanks to Lars Rune Nøstdal)
545 * bug fix: foreign function names should now appear in backtraces on
546 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
547 * bug fix: SETF compiler macro documentation strings are not discarded
549 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
550 (thanks to Alex Plotnick)
551 * bug fix: SLEEP accepts large integer arguments, truncating them to
552 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
553 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
554 * bug fix: compiler notes for expensive slot type checks could be emitted
555 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
557 changes in sbcl-1.0.29 relative to 1.0.28:
558 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
559 https://bugs.launchpad.net/sbcl
560 Bugs can be reported directly there, or by sending email to
561 sbcl-bugs@lists.sourceforge.net
562 (no subscription required.)
563 * minor incompatible change: under weak type checking policy integer
564 types are weakened less aggressively.
565 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
566 allowed to return, which causes SBCL to quit with exit status 0. Previously
567 if the function returned with a small integer return value, that value
568 was accidentally reused as the exit status.
569 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
570 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
571 :HASH-FUNCTION argument. Refer to user manual for details.
572 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
574 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
575 microseconds since the Unix epoch on all platforms.
576 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
577 allows the compiler to safely elide boundedness checks for special
579 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
580 the symbol, prohibits both lexical and dynamic binding. This is mainly an
581 efficiency measure for threaded platforms, but also valueable in
583 * new feature: UNC pathnames are now understood by the system on Windows.
584 * optimization: the compiler uses a specialized version of FILL when the
585 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
587 * optimization: accesses to potentially non-simple arrays where element type
588 is known are 50% faster.
589 * optimization: compiler now generates faster array typechecking code.
590 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
592 * optimization: multidimensional array accesses in the absence of type
593 information regarding array rank are approximately 10% faster due to
594 open coding of ARRAY-RANK.
595 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
596 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
598 * optimization: result of call to VECTOR can now be stack allocated.
599 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
600 as long as the resulting array is one-dimensional and has a known
601 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
602 length of the list matches the known length of the vector does not
603 allocate the list as an intermediate step. Ditto for VECTOR and simple
605 * optimization: MAKE-ARRAY can now stack allocate in the presence of
606 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
607 known element type, and is known to be simple and one dimensional.
608 * improvement: SBCL now emits a compiler note where stack allocation was
609 requested but could not be provided (not in all cases, unfortunately)
610 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
611 * improvement: pretty-printing loop has been implemented properly. (thanks
612 to Tobias Rittweiler)
613 * documentation: CLOS slot typechecing policy has been documented.
614 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
615 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
616 pointer, leading to memory faults. (thanks to Bart Botta)
617 * bug fix: better floating point exception handling on x86/OpenBSD.
618 (thanks to Josh Elsasser)
619 * bug fix: exit status from QUIT when called under --script was lost
620 (reported by Hubert Kauker)
621 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
622 same implementation of FILL to initialize the array, even if a more
623 efficient one was available (reported by Stas Boukarev, thanks to
625 * bug fix: potential miscompilation of array stack allocation on x86 and
626 x86-64. (reported by Time Tossavainen)
627 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
628 result in their subforms being treated as top level forms. (reported by
630 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
631 than a machine register could leave garbage in the high bits of the
632 result register (bug 316325).
633 * bug fix: disable address space randomization Linux/x86-64 as well,
634 not just x86-64. (reported by Ken Olum)
635 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
636 generate incorrect code.
637 * bug fix: #201; type inference for CONS and ARRAY types could derive
638 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
639 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
640 could not be assigned to or bound with PROGV. (reported by Lorenz
642 * bug fix: the value of CL:- in the inspector was the previous expression
643 evaluated rather than the expression being evaluated.
644 * bug fix: constants can no longer be locally declared special.
645 * bug fix: signals delivered to threads started from foreign land (read:
646 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
647 thread by blocking all signals and resignalling.
648 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
649 from :INITFORM, if any.
651 changes in sbcl-1.0.28 relative to 1.0.27:
652 * a number of bugs in cross-compilation have been fixed, with the ultimate
653 result that building under (at least) clisp should be much more reliable.
654 * minor incompatible changes: echo-streams now propagate unread-char to the
655 underlying input stream, and no longer permit unreading more than one
657 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
658 frames, allowing for instance more reliable backtraces.
659 * improvement: the debugger REPL can now reference lexical variables
660 by name directly for code compiled with (DEBUG 3).
661 * improvement: errors from malformed declarations now have better source
662 paths associated with them. (thanks to Tobias Rittweiler)
663 * optimization: faster local calls on x86/x86-64
664 * bug fix: some error messages for out-of-bound array indexes confused the
665 index and the bound. (thanks to Stas Boukarev)
666 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
668 * bug fix: running regressions tests in shells without OSTYPE set now works.
669 (reported by Harald Hanche-Olsen)
670 * bug fix: more robust static space exhaustion signalling from
671 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
672 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
673 docstring away instead of storing it under names such as (LAMBDA (X)).
674 (reported by Leslie Polzer)
675 * bug fix: timers could go off in the wrong order, be delayed indefinitely
676 (thanks to Ole Arndt for the patch)
677 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
678 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
679 potentially-invalid effective methods in its cache.
680 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
681 instances as well (thanks to Paul Khuong)
682 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
683 SB-POSIX:WAITPID and their C equivalents.
684 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
686 changes in sbcl-1.0.27 relative to 1.0.26:
687 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
688 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
689 * improvement: the system either recovers from stack exhaustion or dies
690 properly as opposed to leaving the user uncertain of whether the handler
691 trampled on some random memory next to the stack or having to rely on
692 --lose-on-corruption (which is still a good idea to use in production
693 because stack exhaustion can happen in signal handlers which will likely
695 * bug fix: fix gc related interrupt handling bug on ppc (regression from
696 1.0.25.37, reported by Harald Hanche-Olsen)
697 * bug fix: work around signal delivery bug in darwin (regression from
698 1.0.25.44, reported by Sidney Markowitz)
699 * bug fix: fix ERROR leaking memory (reported by David Thompson)
701 changes in sbcl-1.0.26 relative to 1.0.25:
702 * incompatible change: an interruption (be it a function passed to
703 INTERRUPT-THREAD or a timer function) runs in an environment where
704 interrupts can be enabled. The interruption can use
705 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
706 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
707 potentially running out of stack. Keep in mind that in the absence
708 of WITHOUT-INTERRUPTS some potentially blocking operation such as
709 acquiring a lock can enable interrupts.
710 * incompatible change: GC-OFF and GC-ON are removed, as they were
711 always unsafe. Use WITHOUT-GCING instead.
712 * new feature: runtime option --disable-ldb
713 * new feature: runtime option --lose-on-corruption to die at the
714 slightest hint of possibly non-recoverable errors: running out of
715 memory, stack, alien stack, binding stack, encountering a memory
716 fault, etc. In the absence of --lose-on-corruption a warning is
718 * enhancement: detect binding stack exhaustion
719 * enhancement: detect alien stack exhaustion on x86/x86-64
720 * improvement: generally more stable and reliable interrupt handling
721 * improvement: there is a per thread interruption queue,
722 interruptions are executed in order of arrival
723 * improvement: a repeating timer reschedules itself when the it has
724 finished, but expiration times are spaced equally. If an
725 expiration time is in the past it will trigger after a short grace
726 period that may give a chance to other things to run.
727 * optimization: slightly faster gc on multithreaded builds
728 * optimization: faster WITHOUT-GCING
729 * bug fix: when JOIN-THREAD signals an error, do it when not holding
730 important locks so that the debugger/handler doesn't produce
731 recursive errors or deadlock.
732 * bug fix: real-time signals are not used anymore, so no more
733 hanging when the system wide real-time signal queue gets full.
734 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
736 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
737 * bug fix: fix random memory faults related to interrupts on alpha
738 * bug fix: fix random memory faults related to interrupts on sparc
739 * bug fix: fix deadlocks related to starting threads
740 * bug fix: fix deadlines on locks on futex platforms
741 * bug fix: restore errno in signal handlers
742 * bug fix: fix deadlocks related to hash tables
743 * bug fix: fix deadlocks in pcl
745 changes in sbcl-1.0.25 relative to 1.0.24:
746 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
747 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
748 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
749 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
750 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
751 better name and does not return values so stale on multiprocessor systems.
752 Also, HOLDING-MUTEX-P was added for about the only sane usage of
754 * improvement: unithread builds keep track of MUTEX-VALUE.
755 * improvement: reading from a TWO-WAY-STREAM does not touch the output
756 stream anymore making it thread safe to have a concurrent reader and
757 a writer, for instance, in a pipe.
758 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
759 arguments, making compiler-macros for SETF-functions able to inspect
760 their constant arguments.
761 * improvement: COMPILE-FILE reports times with millisecond accuracy
762 (thanks to Luis Oliveira)
763 * optimization: CHAR-CODE type derivation has been improved, making
764 TYPEP elimination on subtypes of CHARACTER work better. (reported
765 by Tobias Rittweiler, patch by Paul Khuong)
766 * bug fix: setting alien structure fields of type struct by value now
767 computes the right offset for the memory copy.
768 * bug fix: compilation problem involving inlined calls to aliens with
769 result type VOID. (reported by Ken Olum)
770 * bug fix: #235a; sequential inline expasion in different policies no
771 longer reuses the functional from the previous expansion site.
772 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
773 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
774 * bug fix: named ENUMs in multiply-referenced alien record types no longer
775 cause an implied type redefinition. Regression from 1.0.21.29.
776 * bug fix: sign-extension of small signed return values now works with C
777 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
778 * improvements to the Windows port:
779 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
780 Westfold, thanks to Rudi Schlatte)
782 changes in sbcl-1.0.24 relative to 1.0.23:
783 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
784 vector of a multidimensional SIMPLE-ARRAY.
785 * new feature: the system now signals a continuable error if standard
786 readtable modification is attempted. (thanks to Tobias Rittweiler)
787 * new feature: DIRECTORY has been extended with a non-standard keyword
788 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
789 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
790 has been robustified and documented better. (thanks to Robert Goldman)
791 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
792 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
793 * tradeoff: constant FORMAT control strings are now compiled unless
794 SPACE > SPEED (previously only when SPEED > SPACE.)
795 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
797 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
799 * bug fix: lexical type declarations are now correctly reported by
800 SB-CLTL2. (reported by Larry D'Anna)
801 * bug fix: STRING-TO-OCTETS did not handle :START properly when
802 using UTF-8 as external format. (thanks to Luis Oliveira)
803 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
804 are signalled correctly. (thanks to Stas Boukarev)
805 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
806 designator. (thanks to Tobias Rittweiler)
807 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
808 designator, and returns T instead of the function. (thanks to
810 * bug fix: direct superclasses of STANDARD-CLASS and
811 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
812 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
813 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
814 when no class with the named slot yet exists no longer causes a
815 compile-time style-warning.
816 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
817 in safe code. (reported by Didier Verna)
818 * bug fix: #430; nested structure constructors can stack allocate.
819 * bug fix: on some 64-bit platforms dynamic space size was truncated
820 to #xffff0000 bytes. (reported by Benjamin Lambert)
821 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
822 REPL unusable. (reported by Daniel Herring)
823 * bug fix: return values of READ-SEQUENCE did not take :START into
824 account on file streams, regressions since 1.0.12.22. (reported by
825 Thomas Russ, patch by Paul Khuong)
826 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
827 method specializer used to confuse permuation vector optimization.
828 * bug fix: system inserted bogus implicit type declarations for local
829 special variables in DEFMETHOD bodies.
830 * bug fix: #354; duplicated frames in backtraces due to
831 non-tail-call-optimized XEPs to functions with return type NIL
833 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
834 initializes structure object slots according to DEFSTRUCT initforms,
835 and DEFSTRUCT forms :INCLUDEind structure classes defined using
836 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
837 (reported by Bruno Haible and Stephen Wilson)
838 * bug fix: #395; fill-pointer output streams used now support
839 element-type BASE-CHAR as well.
840 * bug fix: compiler error when attempting to derive return value of
841 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
843 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
845 * bug fix: Mac OS X binaries should now be portable between Leopard
848 changes in sbcl-1.0.23 relative to 1.0.22:
849 * enhancement: when disassembling method functions, disassembly
850 for the associated fast function is also produced.
851 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
853 * optimization: printing with *PRINT-PRETTY* true is now more
854 efficient as long as the object being printed doesn't require
855 special handling by the pretty printer.
856 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
857 now interact correctly with type declarations.
858 * partial bug fix: PCL detects infinite recursion during wrapper
859 validation. (thanks to Attila Lendvai)
860 * bug fix: #426; nested function calls are inlined properly.
861 Previously if FOO was an inline function, in calls of the form
862 (FOO (FOO ...)) the outer call was not inlined.
863 * bug fix: long long arguments passed in registers to alien
864 functions on PowerPC Linux and NetBSD are now handled correctly
865 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
867 changes in sbcl-1.0.22 relative to 1.0.21:
868 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
869 for the shared object in the current directory, but passes the native
870 namestring of the designated pathname to the operation system's shared
871 object loading function as-it.
872 * minor incompatible change: --disable-debugger toplevel option now takes
873 effect before processing of initialization files and --eval or --load
875 * new feature: new commandline argument: --script, which supports
876 shebang lines. See documentation for details. (based on work by
878 * new feature: SAVE-LISP-AND-DIE can save current values of
879 --dynamic-space-size and --control-stack-size in the executable core,
880 causing it to skip normal runtime option processing. See documentation
881 for details. (thanks to Zach Beane)
882 * enhancement: inoccous calls to EVAL or generic functions dispatching
883 on subclasses of eg. STREAM no longer cause compiler notes to appear.
884 * enhancement: the system no longer resignals errors from --load and
885 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
886 associated with the original error to be lost. (thanks to Ariel
888 * enhancement: :DONT-SAVE keyword argument has been added to
889 LOAD-SHARED-OBJECT for controlling interaction with
890 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
891 the effects of an earlier LOAD-SHARED-OBJECT call.
892 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
893 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
894 provided. (reported by Cedric St-Jean)
895 * bug fix: circularity handling in the reader did not treat raw
896 structure slots correctly. (reported by Cedric St-Jean)
897 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
898 file descriptors when there were none.
899 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
900 was broken. (reporteed by Willem Broekema)
901 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
902 pathnames without a directory.
903 * bug fix: COMPILE-FILE did not warn about undefined variable
904 references at toplevel, and LOAD of the resulting fasl did
906 * bug fix: functions with non-required arguments used to end up with
907 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
908 * bug fix: redefining a function with non-required arguments didn't
909 update the system's knowledge about its call signature properly.
910 * bug fix: fixed #431; incompatible alien record type redefinitions
911 are detected and handled. (reported by Neil Haven)
912 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
913 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
915 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
916 after alien stack frames.
917 * bug fix: strings passed to mk{s,d}temp lacked null termination
919 changes in sbcl-1.0.21 relative to 1.0.20:
920 * new feature: the compiler is able to track the effective type of a
921 generic function across method addition and removal.
922 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
923 appropriately typed structure slots without locking.
924 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
925 information like those gathered by TIME using a programming-friendly
927 * new feature: TIME reports time taken even if the form performs a
928 non-local transfer of control.
929 * enhancement: reduced conservativism on GENCGC platforms: on
930 average 45% less pages pinned (measured from SBCL self build).
931 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
932 mutate constant symbols or violate declaimed type of the symbol.
933 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
934 sleeping on the semaphore in heavily contested semaphores.
935 * bug fix: semaphores and condition variables were not interrupt
937 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
938 owned by other threads anymore.
939 * bug fix: FIND on lists called KEY outside the specified
940 subsequence. (reported by budden)
941 * bug fix: LOG doesn't use single-float intermediate results when
942 given mixed integer and double-float arguments, leading to better
943 precision. (reported by Bob Felts)
944 * bug fix: LOG with base zero returned values of inconsistent type.
946 changes in sbcl-1.0.20 relative to 1.0.19:
947 * minor incompatible change: OPTIMIZE qualities
948 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
949 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
950 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
951 * documentation: some slot access efficiency guidelines have been
952 added to the user manual.
953 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
954 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
955 as ASSOC and MEMEBER.
956 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
957 to more efficient EQ-comparison versions more often.
958 * optimization: enhanced derivation of DOLIST iteration variable type
960 * optimization: constant folding of simple (LIST ...) forms as DOLIST
962 * optimization: runtime lookup of function definitions can be
963 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
964 * optimization: compiler is able to derive the return type of
965 (AREF (THE STRING X) Y) as being CHARACTER.
966 * optimization: CLRHASH on empty hash-tables no longer does pointless
967 work. (thanks to Alec Berryman)
968 * optimization: REPLACE deftransforms don't punt when :START1 or
970 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
971 no longer emits a code deletion note. (reported by Andrew
973 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
974 functions with an odd number of &OPTIONAL arguments, a &REST
975 argument, and one or more &KEY arguments at the call site.
976 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
977 arguments appeared at call sites as well.
978 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
979 READ-LINE &co can no longer read from them afterwards. (reported
981 * bug fix: fixed #427: unused local aliens no longer cause compiler
982 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
984 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
985 alien-stack leakage. (reported by Andy Hefner)
986 * bug fix: PROGV signals an error when an attempt to violate declared
987 type of a variable or bind a constant is made.
988 * bug fix: SET signals an error when an attempt to violate declared
989 type of a variable is made.
990 * bug fix: restart computation during the execution of a restart
991 test function no longer causes infinite recursion. (reported by
993 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
994 signals an error. (thanks to Pierre Mai)
995 * bug fix: EXPORT left symbol unexported in conflict situations.
996 (thanks to Michael Weber)
997 * bug fix: correctly handle name conflicts involving CL:NIL.
998 (thanks to Michael Weber)
999 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1000 conflicts arising from USEing package with conflicting symbols
1001 correctly. (thanks to Michael Weber)
1003 changes in sbcl-1.0.19 relative to 1.0.18:
1004 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1005 warnings that go otherwise unhandled will be muffled if they are
1006 of the type that's the value of this variable.
1007 * optimization: stack allocation is slightly more efficient on x86
1009 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1010 where a raw slot always is initialized using the initform whose
1011 type is not know sufficiently well a compile-time are now compiled
1012 correctly. (reported by John Morrison)
1013 * bug fix: compiler no longer makes erronous assumptions in the
1014 presence of non-foldable SATISFIES types.
1015 * bug fix: stack analysis missed cleanups of dynamic-extent
1016 arguments in non-let-converted calls to local functions.
1017 * improvements to the Windows port:
1018 ** adjusted address spaces for building on both Win32 and
1019 Win64. (thanks for John Connors)
1020 * fixed some bugs revealed by Paul Dietz' test suite:
1021 ** interval arithmetic during type derivation used inexact integer
1022 to single-float coercions.
1023 ** arithmetic operations involving large integers and single
1024 floats give the same results in compiled and interpreted code.
1025 ** deriving the result type of COERCE no longer signals an error
1026 if the derived type of the second argument is a MEMBER type
1027 containing invalid type specifiers.
1028 ** ADJOIN with constant NIL as second argument works correctly.
1029 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1031 changes in sbcl-1.0.18 relative to 1.0.17:
1032 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1033 profiles only the current thread.
1034 * minor incompatible change: changes to SYMBOL-VALUE of constants
1035 defined with DEFCONSTANT now signal an error.
1036 * enhancement: SB-SPROF now has support for wallclock profiling,
1037 and is also able to profile specific threads. REPORT output
1038 has also additional sorting options.
1039 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1041 * optimization: structure allocation has been improved
1042 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1043 ** out of line constructors are ~10% faster.
1044 ** inline constructors are ~15% faster.
1045 ** inline constructors are capable of dynamic extent allocation
1046 (generally on x86 and x86-64, in some cases on other platforms
1048 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1050 * optimization: file compiler is now able to coalesce non-circular
1051 lists, non-base strings, and bit-vectors. Additionally, constants
1052 are never referenced through SYMBOL-VALUE at runtime.
1053 * optimization: code defining methods on PRINT-OBJECT (and other
1054 generic functions in the COMMON-LISP package) now loads faster.
1055 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1057 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1058 fasl is now deleted. (reported by Attila Lendvai)
1059 * bug fix: READ-LINE always returned NIL for the last line in files.
1060 (reported by Yoshinori Tahara)
1061 * bug fix: more accurate disassembly annotations of foreign function
1062 calls. (thanks to Andy Hefner)
1063 * bug fix: trimming non-simple strings and non-string string
1064 designators when the there is nothing to trim works properly.
1065 (thanks to James Knight)
1066 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1067 (thanks to Travis Cross)
1068 * fixed some bugs revealed by Paul Dietz' test suite:
1069 ** NIL is a valid function name (regression at 1.0.13.38)
1070 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1071 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1072 fill pointers properly (regression at 1.0.12.23)
1073 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1074 displacement indices properly (regression at 1.0.12.23)
1076 changes in sbcl-1.0.17 relative to 1.0.16:
1077 * temporary regression: user code can no longer allocate closure
1078 variable storage on stack, due to bug 419 without explicitly
1079 requesting it. Please consult sbcl-devel for advice if you need to
1080 use this feature in the meanwhile.
1081 * new feature: runtime argument --control-stack-size can be used to
1082 adjust thread default control stack size.
1083 * enhancement: improved TIME output
1084 ** all times are reported using the measured accuracy (milliseconds
1085 for real and GC times, microseconds for everything else.)
1086 ** processor cycle counts on x86 and x86-64.
1087 ** interpreted forms are counted for both evaluator modes.
1088 ** number of lambdas converted by the compiler is reported.
1089 ** CPU percentage report (computed from real and total run time.)
1090 ** more comprehensive run time reporting, using a condenced format
1091 ** interperted form, lambda, and page fault counts are omitted
1093 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1095 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1096 * optimization: two argument forms of LAST are upto ~10% faster
1097 in normal SPEED policies.
1098 * optimization: NCONC no longer needs to heap cons its &REST list
1099 in normal SPEED policies.
1100 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1101 to Sidney Markowitz)
1102 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1103 regression since 1.0.9.1. (thanks to Eric Marsden)
1104 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1105 since 1.0.15.36. (thanks to Paul Khuong)
1106 * bug fix: LAST when always returned the whole list when given a bignum
1107 as the second argument.
1108 * bug fix: dynamic extent allocation of nested lists and vectors
1109 could leak to otherwise accessible parts.
1110 * bug fix: invalid optimization of heap-allocated alien variable
1112 * bug fix: fasl header checking is less vulnerable to different
1113 platform word lengths.
1114 * bug fix: more correct assembler syntax for GNU binutils
1115 2.18.50.0.4 support. (thanks to Marijn Schouten)
1116 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1118 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1119 declarations) successfully. (reported by Attila Lendvai)
1121 changes in sbcl-1.0.16 relative to 1.0.15:
1122 * minor incompatible change: revert the changes to sb-posix's error
1123 signaling added in 1.0.14.
1124 * minor incompatible change: change PROBE-FILE back to returning
1125 NIL whenever we can't get a truename, as was the case before 1.0.14.
1126 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1127 inherits from ERROR instead of just CONDITION.
1128 * new feature: SB-INTROSPECT can provide source locations for instances
1129 as well. (thanks to Tobias Rittweiler)
1130 * optimization: binding special variables now generates smaller code
1131 on threaded platforms.
1132 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1133 and cases where no :TEST is given but the compiler can infer that
1134 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1135 * optimization: better LOGNOT on fixnums.
1136 * optimization: modular arithmetic for a particular requested width
1137 is implemented using a tagged representation unless a better
1138 representation is available.
1139 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1140 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1141 for wellformedness and returns a specialized vector. (reported by
1142 Francois-Rene Rideau)
1143 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1144 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1145 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1146 unscheduling timer at the same time as another timer fires.
1147 * bug fix: don't reschedule timers for dead threads.
1148 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1149 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1150 bogus errors if select() was interrupted.
1151 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1153 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1154 * enhancement: cleaner backtraces for interactive interrupts, as
1155 well as other cases where the interesting frames used to be
1156 obscured by interrupt handling frames.
1157 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1158 now supported, and tracing a whole package using (TRACE "FOO") now
1159 traces SETF-functions as well.
1160 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1161 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1162 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1163 * unreadably printed representation of hash-tables now includes
1165 * bug fix: partially fixed #188: type propagation from assignments
1166 is now more efficient.
1167 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1168 'DOUBLE-FLOAT) are not flushable.
1169 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1170 full address of the object, and none of the tag bits.
1171 * bug fix: readably printing hash-tables now respects other printer
1172 control variables. (reported by Cedric St-Jean)
1173 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1174 keyword with MAKE-HASH-TABLE.
1175 * bug fix: export SB-POSIX:MKSTEMP.
1176 * bug fix: SORT was not interrupt safe.
1177 * bug fix: XREF accounts for the last node of each basic-block as
1179 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1180 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1181 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1182 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1183 create obsolete instances in the case of redefinition or
1184 obsoletion of a superclass. (thanks to Andy Hefner)
1185 * bug fix: Support for the Alpha architecture has been revived; it had
1186 suffered somewhat from lack of maintenance since sbcl-1.0.
1187 * improvements to the Windows port:
1188 ** The system detects the codepage to use at startup, instead of
1189 using the value from the saved core. (thanks to Kei Suzuki)
1191 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1192 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1193 (see documentation for details.)
1194 * revived support for OpenBSD (contributed by Josh Elsasser)
1195 * partially fixed bug #108: ROOM no longer suffers from occasional
1196 (AVER (SAP= CURRENT END)) failures.
1197 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1198 bodies no longer cause a WARNING to be signalled. (reported by
1200 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1201 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1202 the bug in TRUNCATE.) (reported by Michael Weber)
1203 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1204 no samples. (reported by Andy Hefner)
1205 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1206 no longer appear as (NIL ...) frames in backtraces.
1207 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1208 is now actually exported from SB-EXT as documented. (reported by
1210 * bug fix: sb-aclrepl now correctly understands how to inspect
1211 single-floats on 64-bit platforms where single-floats are not boxed.
1212 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1213 yet been finalized. (reported by Levente Meszaros)
1214 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1215 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1216 SBCL-specific optimize qualities.
1218 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1219 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1220 an executable in the search path, and does so in the child
1221 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1222 been removed; it can be found in the CVS history, for somebody who
1223 needs that search behavior (see the manual).
1224 * minor incompatible change: compiler policy re. weakening type
1225 checks has changed: now type checks are weakened only if SAFETY < 2
1227 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1228 unparsing of directory pathnames as files. Analogously,
1229 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1230 filename to parse into a directory pathname.
1231 * enhancement: implicit generic function creation now signals a
1232 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1233 users can bind handlers for and muffle around calls to LOAD.
1234 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1235 to be used (using the default stream external format), and allows
1236 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1237 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1238 strings and vectors whose element-type or simplicity is not fully
1239 known at compile-time.
1240 * optimization: STRING-TRIM and related functions no longer allocate
1241 a new string when no trimming needs to be performed. These functions
1242 are also faster than before when the input string has been declared
1244 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1245 * optimization: READ-LINE is significantly faster for files containing
1247 * optimization: non-open coded uses of character comparison operators
1248 (e.g. char=) no longer cons when called with more than one parameter
1249 on platforms supporting dynamic-extent allocation.
1250 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1251 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1252 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1254 * bug fix: some sequence functions elided bounds checking when
1256 * bug fix: too liberal weakening of union-type checks when SPEED >
1258 * bug fix: more bogus fixnum declarations in ROOM implementation
1261 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1262 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1263 :SYNCHRONIZED argument, which makes the hash-table safe for
1264 concurrent accesses (but not iteration.) See also:
1265 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1266 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1267 * optimization: CONCATENATE on strings is an order of magnitude faster
1268 in code compiled with (> SPEED SPACE).
1269 * optimization: SUBSEQ is ~50% faster on lists.
1270 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1271 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1272 END is smaller then START.
1273 * bug fix: SB-PROFILE will no longer report extra consing for nested
1274 calls to profiled functions.
1275 * bug fix: ROOM implementation had bogus fixnum declarations which
1276 could cause type-errors when calling ROOM on large images.
1277 * bug fix: if file compilation is aborted, the partial fasl is now
1278 deleted, and COMPILE-FILE returns NIL as the primary value.
1279 * bug fix: number of thread safety issues relating to SBCL's internal
1280 hash-table usage have been fixed.
1281 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1282 be returned from its body when the values were being returned
1283 using unknown-values return convection and the W-P-O was wrapped
1284 inside an UNWIND-PROTECT.
1285 * bug fix: sb-posix should now compile again under Windows, enabling
1286 slime to work again.
1288 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1289 * incompatible change: hash-table accessor functions are no longer
1290 automatically protected by locks. Concurrent accesses on the same hash-table
1291 from multiple threads can give inconsistent results or even corrupt the
1292 hash-table completely. Multi-threaded applications should do their own
1293 locking at the correct granularity. In the current implementation it is
1294 still safe to have multiple readers access the same table, but it's not
1295 guaranteed that this property will be maintained in future releases.
1296 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1297 and will signal an error at runtime.
1298 * enhancement: SB-THREAD package now exports a semaphore interface.
1299 * enhancement: CONS can now stack-allocate on x86 and
1300 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1302 * enhancement: nested lists can now be stack allocated on
1303 platforms providing stack allocation support.
1304 * enhancement: dynamic-extent support has been extended to support
1305 cases where there are multiple possible sources for the stack
1307 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1308 if the mutex is uncontested on Linux.
1309 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1310 as specified by the CLHS. (thanks to Tobias Rittweiler)
1311 * bug fix: NaN comparison now works on x86-64.
1312 * bug fix: CLOSE :ABORT T on a stream with pending output now
1314 * bug fix: instances of non-standard metaclasses using standard
1315 instance structure protocol sometimes missed the slot type checks
1317 * bug fix: known functions can be inlined in high-debug code.
1319 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1320 * minor incompatible change: the MSI installer on Windows no longer
1321 associates .lisp and .fasl files with the installed SBCL.
1322 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1323 on Windows. (thanks to Luis Oliviera)
1324 * new feature: SB-CLTL2 contrib module now implements
1325 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1326 * optimization: scavenging weak pointers is now more efficient,
1327 requiring O(1) instead of O(N) per weak pointer to identify
1328 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1329 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1330 method bodies using constant slot-names when the first argument is
1331 a specializer parameter for the method.
1332 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1333 names, when the class of the instance is a direct instance
1334 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1335 as slow as the constant slot-name case.)
1336 * optimization: member type construction is now O(N) instead
1338 * optimization: UNION and NUNION are now O(N+M) for large
1339 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1341 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1342 now more readable in environments like Slime which display it.
1343 (thanks to Tobias C. Rittweiler)
1344 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1345 was able to infer the correct argument type for the object on which
1346 the CAS operation was being performed.
1347 * bug fix: copy propagation interfered with parallel assignment
1348 semantics in local calls. (reported by Paul Khuong)
1349 * bug fix: the signed modular fixnum shift compiled to wrong code on
1350 x86 and x86-64. (spotted by a slight modification to some of
1353 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1354 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1355 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1356 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1358 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1359 and generic function now print the object identity for anonymous
1360 instances. (thanks to Attila Lendvai)
1361 * enhancement: as an extension to MOP, SBCL now supports SETF of
1362 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1363 (thanks to Attila Lendvai)
1364 * enhancement: sb-cover has an alternate annotation mode which puts
1365 the form annotations at the car of the form, instead of annotating
1366 it completely. The benefit of this mode is that it shows better
1367 which forms were instrumented by the compiler.
1368 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1369 by printer control variables. (reported by Dan Corkill)
1370 * bug fix: system leaked memory when delayed output was performed by
1371 the OS in smaller chunks then expected. (thanks to David Smith)
1372 * bug fix: system leaked memory when file streams were not closed
1374 * bug fix: large objects written to slow streams that were modified
1375 after the write could end up with the modified state written to
1376 the underlying file descriptor.
1377 * bug fix: multiple threads operating in parallel on the same stream
1378 could cause buffer-overflows.
1379 * bug fix: source location information is stored correctly
1380 (broken since 1.0.6). This bug would generally show up as the
1381 Slime debugger highlighting the wrong form when the sldb-show-source
1383 * bug fix: Branch forms are again annotated as branches in the sb-cover
1385 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1386 on x86-64. (reported by Gregory Vanuxem)
1387 * bug fix: EQUALP could return wrong results for structures with raw
1388 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1389 word). (reported by Vjacheslav Fyodorov)
1390 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1393 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1394 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1395 atomic compare-and-swap operations on threaded platforms.
1396 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1397 allows assigning a global minimum value to optimization qualities
1398 (overriding proclamations and declarations).
1399 * enhancement: closed over variables can be stack-allocated on x86
1401 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1403 * optimization: slot definition lookup is now O(1). This speeds up
1404 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1405 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1406 * optimization: ASSOC and MEMBER can now be open-coded for all
1407 combinations of keyword arguments when second argument is constant
1408 and SPEED >= SPACE. In other cases a specialized version is
1410 * bug fix: using obsoleted structure instances with TYPEP and
1411 generic functions now signals a sensible error.
1412 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1413 (reported by Kristoffer Kvello)
1414 * bug fix: backtrace construction is now more careful when making
1415 lisp-objects from pointers on the stack, to avoid creating bogus
1416 objects that can be seen by the GC.
1417 * bug fix: defaulting of values in contexts expecting more than 7
1418 variables now works on x86-64. (reported by Christopher Laux)
1419 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1421 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1422 as the property-list of a symbol.
1423 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1424 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1425 situations requested, are once again file-compileable. (reported
1428 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1429 * MOP improvement: support for user-defined subclasses of
1430 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1431 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1432 the expansion of DEFMETHOD, is responsible for generating a form
1433 which creates a list of specializers when evaluated. Additional
1434 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1435 debugging and introspective support.
1436 * minor incompatible change: the (unsupported) spinlock interface
1437 has changed: free spinlock now has the value NIL, and a held spinlock
1438 has the owning thread as its value.
1439 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1440 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1442 * enhancement: name of a socket-stream is now "a socket" instead of
1443 "a constant string".
1444 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1445 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1446 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1447 for generic functions. (Thanks to Tobias C. Rittweiler)
1448 * optimization: bignum printing speed has been improved by 20-40%
1449 (depending on the bignum size.)
1450 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1452 * bug fix: the cache used by the CLOS to store precomputed effective
1453 methods, slot offsets, and constant return values is now thread and
1455 * bug fix: generic function dispatch function updating is now thread
1456 and interrupt safe (in the sense that the known issues have been
1458 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1459 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1460 * bug fix: asdf systems with dependencies to the SB-POSIX or
1461 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1462 * bug fix: interrupt safety of applicable method computation has been
1465 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1466 * new contrib: sb-cover, an experimental code coverage tool, is included
1467 as a contrib module.
1468 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1469 significantly faster.
1470 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1471 produce more efficient code on x86-64 if the compiler can determine
1472 that (+ INDEX <constant>) does not require a bounds check and FOO
1473 has an element type at least 8 bits wide.
1474 * enhancement: a new, experimental synchronous timeout facility is
1475 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1476 * enhancement: when a symbol name conflict error arises, the
1477 conflicting symbols are always printed with a package prefix.
1478 (thanks to Kevin Reid)
1479 * enhancement: stepping is now once again supported on the SPARC and
1480 MIPS platforms. (It is also now more likely to work on CheneyGC
1482 * enhancement: sb-sprof can now also track and report accurate call
1484 * bug fixes: the treatment of non-standard subclasses of
1485 SB-MOP:SPECIALIZER is more correct.
1486 * incompatible change: PURIFY no longer copies the data from the
1487 dynamic space into the static and read-only spaces on platforms
1488 that use the generational garbage collector
1489 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1491 * bug fix: GC race condition occasionally resulting in crashes with
1492 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1494 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1496 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1497 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1498 * bug fix: an asynchronous interrupt could previously leave the
1499 system running with GC inhibited.
1500 * bug fix: a DECLARE form evaluated at top-level now causes an error
1501 rather than silently (or verbosely) returning NIL.
1502 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1503 result in a error being signalled due to source form lookup errors.
1504 (reported by Peter Graves)
1506 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1507 * incompatible change: removed writer methods for host-ent-name,
1508 host-ent-addresses -- changing the values did not update the DNS
1510 * minor incompatible change: changed experimental JOIN-THREAD interface
1511 * documentation: the manual now lists reader and writer methods
1512 in class slot documentation sections. (thanks to Richard M Kreuter)
1513 * documentation: unwinding from asyncronous events has been
1514 documented as unsafe.
1515 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1516 in multithreaded application code.
1517 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1518 platforms. (thanks to James Anderson for the optimization hint)
1519 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1521 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1522 variants no longer cons.
1523 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1524 their NOT- variants no longer cons.
1525 * optimization: EQUAL hash tables no longer use SXHASH for objects
1526 of all data types, but instead use an EQL hash for types for which
1527 EQUAL is the same as EQL.
1528 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1529 are significantly faster.
1530 * optimization: new STRING-OUTPUT-STREAM implementation is much
1531 faster for large outputs and conses 30% less on average.
1532 * enhancement: XREF information is now collected for references made
1533 to global variables using SYMBOL-VALUE and a constant argument.
1534 * enhancement: SIGINT now causes a specific condition
1535 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1536 * bug fix: FILE-POSITION used to signal an error in some cases where
1537 ANSI requires it to return NIL.
1538 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1539 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1540 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1542 * bug fix: bad type declaration in the CLOS implementation has
1543 been fixed. (reported by James Anderson)
1544 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1545 (thanks to Lutz Euler)
1546 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1547 required by the CLHS. (reported by Samium Gromoff)
1548 * bug fix: dead unbound variable references now signal an error.
1549 (reported by Marco Monteiro)
1550 * bug fix: / with an unused value was being deleted in safe code.
1551 (thanks to Marco Monteiro and Kevin Reid)
1552 * bug fix: number of characters that can be written onto a single
1553 line in a file is unlimited.
1554 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1555 been fixed by inhibiting interrupts for when GC is disabled.
1556 * bug fix: some interrupt safety issues with GETHASH, (SETF
1557 GETHASH), CLRHASH and REMHASH have been fixed.
1558 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1559 specifier no longer causes infinite recursion.
1560 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1561 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1562 * bug fix: an &environment argument with the correct variable information
1563 is passed to macros that are expanded during byte compilation.
1564 (reported by Samium Gromoff)
1565 * bug fix: a logic error was causing the hash function for bignums to
1566 have excessive amounts of collisions. (reported by Faré Rideau)
1567 * bug fix: modifying the contents of an array could change the return
1568 value of SXHASH on that array, which is only allowed for strings
1569 and bit vectors. (bug introduced in 0.9.16)
1570 * improvement: the x86-64/darwin port now passes all tests (except
1571 for the debugger tests) but should still be considered
1572 experimental until this is fixed.
1573 * improvement: a style-warning is signaled for CASE (etc) clauses with
1574 duplicate keys. (thanks to Kevin Reid)
1575 * improvement: macos/x86 and macos/x86-64 now use mach exception
1576 handlers for dealing with illegal instructions (for trapping and
1577 error handling) and memory protection violations (for GC).
1579 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1580 * new platform: experimental support for x86-64/darwin (MacOS).
1581 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1582 and getnameinfo sockets functions are used instead of gethostbyaddr
1583 and gethostbyname, on platforms where the newer functions are available.
1584 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1586 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1587 don't print the startup banner, but behave as if --noinform was passed
1588 as a command line argument. (thanks to Kevin Reid)
1589 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1590 * optimization: code using alien values with undeclared types is much faster.
1591 * optimization: the compiler is now able to open code SEARCH in more cases.
1592 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1593 * bug fix: using standardized COMMON-LISP special variables as loop
1594 variables no longer signals bogus package lock violations. (reported
1596 * bug fix: declaring local loop variables to be of a range-limited type
1597 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1598 (reported by Andras Simon)
1599 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1600 bugs remain on x86-64.)
1601 * bug fix: the #= and ## reader macros now interact reasonably with
1602 funcallable instances.
1603 * bug fix: type-checks for function arguments were compiled using the
1604 compiler policy settings of the wrong lexical environment (in 1.0.2
1606 * bug fix: SHADOW accepts characters as string designators, as required
1607 by the spec (thanks to Eric Marsden)
1608 * bug fix: fixed GC safety issues when foreign functions are called with
1609 non-base strings as arguments
1610 * bug fix: more consistent error output for fatal-compiler-warnings, like
1612 * bug fix: functions with proper names were showing up as NIL in
1613 backtraces (reported by Edi Weitz, regression in 1.0.2)
1615 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1616 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1617 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1618 produce more efficient code on the x86 if the compiler can determine
1619 that (+ INDEX <constant>) does not require a bounds check and FOO
1620 has an element type at least 8 bits wide.
1621 * bug fix: references to undefined variables are handled the same way
1622 in toplevel forms as in the normal compiler
1623 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1625 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1626 (thanks to Jon Buller)
1627 * improvement: faster compilation times for complex functions
1628 * improvement: added readlink support to SB-POSIX (thanks to Richard
1631 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1632 * improvement: experimental support for mach exception handling on
1633 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1635 * improvement: support for GBK external format.
1636 (thanks to Chun Tian (binghe))
1637 * improvement: the debugger now displays variables that have been closed
1638 over, in code compiled with (DEBUG 2) or higher
1639 * improvement: support for executable cores on NetBSD (thanks to
1641 * new feature: added a RESTART-FRAME debugger command
1642 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1643 be used to provide an implementation for FILE-POSITION on Gray streams
1644 (thanks to Eric Marsden)
1645 * new feature: add syslog, openlog and closelog support to SB-POSIX
1646 (thanks to Richard Kreuter)
1647 * optimization: the function call overhead in code compiled with
1648 a high DEBUG optimization setting is significantly
1649 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1650 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1651 (thanks to Tony Martinez)
1652 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1653 evaluated once (reported by Kevin Reid)
1654 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1655 works again (thanks to Kilian Sprotte)
1656 * bug fix: an error is signaled for tagbodies with duplicate tags
1657 (thanks to Stephen Wilson)
1658 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1659 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1660 stack frames from alien callbacks.
1661 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1662 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1663 65k pages (thanks to David Woodhouse)
1664 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1666 changes in sbcl-1.0.1 relative to sbcl-1.0:
1667 * new platform: FreeBSD/x86-64, including support for threading.
1668 * new feature: the compiler stores cross-referencing information
1669 about function calls (who-calls), macroexpansion (who-macroexpands)
1670 and special variables (who-binds, who-sets, who-references) for code
1671 compiled with (< SPACE 3). This information is available through the
1672 sb-introspect contrib.
1673 * new feature: users may subclass SEQUENCE, and have instances of
1674 these classes interoperate with standard Common Lisp functions if
1675 a number of methods are defined. (This feature is experimental
1676 and the interface subject to change based on feedback from SBCL
1677 users and the general community)
1678 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1679 x86/x86-64, rather than the previous fixed depth of 8
1680 * improvement: another pthread back-end of mutex "pthread-futex".
1681 * bug fix: non-ascii command-line arguments are processed correctly
1682 (thanks to Yaroslav Kavenchuk)
1683 * bug fix: non-required arguments were not passed correctly when a method
1684 defined using DEFMETHOD was called from a mop-generated method using
1685 CALL-NEXT-METHOD (reported by Pascal Costanza)
1686 * bug fix: recursion is now permitted in accessors through
1687 SLOT-UNBOUND. (reported by Pascal Costanza)
1688 * bug fix: an error was signaled at startup if the HOME environment
1689 variable was defined, but had an empty value (reported by Peter Van Eynde)
1690 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1691 signal a PROGRAM-ERROR, not a BUG.
1692 * bug fix: SB-POSIX:READDIR works when built with large file support.
1693 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1695 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1696 for better automatic indentation support. (thanks to Matt Pillsbury)
1697 * optimization: loading generic functions no longer takes O(n^2) time,
1698 proportional to the amount of methods in the generic function
1699 (reported by Todd Sabin and Jeremy Brown)
1700 * optimization: the FIND and POSITION family of sequence functions
1701 are significantly faster on arrays whose element types have been
1703 * improvements to the Windows port:
1704 ** Intermittent heap corruption problems have been fixed. (thanks
1705 to Alastair Bridgewater)
1706 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1708 ** Lisp is able to unwind foreign exception frames from alien
1709 callbacks. (thanks to Alastair Bridgewater)
1711 changes in sbcl-1.0 relative to sbcl-0.9.18:
1712 * improvement: experimental support for threading on FreeBSD/x86.
1713 (thanks to NIIMI Satoshi)
1714 * improvement: runtime option --dynamic-space-size can be used
1715 to set the size of the dynamic space reserved on startup.
1716 * improvement: floating point modes in effect are now saved in
1717 core, and restored on startup.
1718 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1719 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1720 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1721 threads are not running after *SAVE-HOOKS* have run.
1722 * improvement: writes to CLOS instance slots are type-checked in code
1723 compiled with (SAFETY 3)
1724 * improvement: floating-point exception handling on FreeBSD (thanks to
1726 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1727 (thanks to Zach Beane)
1728 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1730 * improvement: added support for the Shift-JIS external format.
1731 (contributed by NIIMI Satoshi)
1732 * improvement: callbacks are supported on Linux/PPC. (thanks to
1734 * bug fix: compiler bug triggered by a (non-standard) VALUES
1735 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1736 * bug fix: file compiler no longer confuses validated and already
1737 dumped structurres. (reported by Kaersten Poeck)
1738 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1739 fill-pointer signals a type-error as required. (thanks to
1741 * bug fix: disassemly of funcallable instances works.
1742 * bug fix: single stepping on PPC.
1743 * bug fix: fix thread-safety problems in the type system (generally
1744 manifesting as nonsensical errors like "STRING is a bad type specifier
1745 for sequences" or "The value 1 is not of type FIXNUM")
1746 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1747 (reported by Josip Gracin)
1748 * bug fix: an error is signaled for attempts to displace arrays with
1749 incompatible element types (thanks to Mario Mommer)
1750 * bug fix: more correct handling of wide characters in debug info
1751 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1752 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1753 and don't cause extra consing
1754 * optimization: MAP and MAP-INTO are significantly faster on vectors
1755 whose elements types have been declared.
1756 * Improvements to SB-SPROF:
1757 ** Support for allocation profiling
1758 ** Reduced profiling overhead, especially for long profiling runs
1759 * Improvements to the Windows port:
1760 ** floating point exceptions are now reported correctly.
1761 ** stack exhaustion detection works partially.
1762 ** more accurate GET-INTERNAL-REAL-TIME.
1763 ** better RUN-PROGRAM behaviour in case of errors in the child
1765 ** PROBE-FILE now simplifies pathnames correctly.
1766 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1767 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1768 1st 1970 (although time timezone data will be unreliable).
1769 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1771 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1772 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1773 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1775 * bug fix: two potential GC deadlocks affecting threaded builds.
1776 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1777 returns T (reported by Anton Kazennikov)
1778 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1779 with non-variable places
1780 * bug fix: remove a race condition in the setting of
1781 funcallable-instance functions, this should make threaded CLOS
1782 code more stable against memory faults.
1783 * bug fix: corruption of specials when unbinding is interrupted by an
1784 asynchronous unwind (reported by Hannu Koivisto)
1785 * improvement: the debugger will now also display local variables that
1786 are only used once, for code compiled with a DEBUG optimization quality
1789 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1790 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1791 * incompatible change: External-format support for FFI calls. The
1792 SB-ALIEN:C-STRING no longer implies an ASCII
1793 external-format. Instead the string is subject to external-format
1794 conversion. Additionally return values of type SB-ALIEN:C-STRING
1795 are by default of type (SIMPLE-ARRAY CHARACTER), not
1796 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1797 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1798 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1799 * incompatible change: SB-EXT package no longer contains the
1800 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1801 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1803 * incompatible change: the single-stepper is no longer available
1804 on Alpha, Mips and Sparc platforms.
1805 * minor incompatible change: the direct superclasses of
1806 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1807 not (STANDARD-OBJECT FUNCTION). This makes the
1808 class-precedence-lists of GENERIC-FUNCTION and
1809 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1811 * minor incompatible change: the default stream external format on
1812 non-unicode SBCL is no longer detected from the locale, but is always
1814 * new feature: Add a version of evaluator that uses an interpreter instead
1815 of the compiler. EVAL still uses the compiler by default, to switch it
1816 to use the interpreter, set the value of the variable
1817 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1818 * minor incompatible change: the single-stepper REPL has been merged
1819 with the normal debugger (see the "Stepping" heading of the debugger help
1820 for more details). The debugger command STEP will no longer switch
1821 to the single-stepper REPL.
1822 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1823 for a type now works.
1824 * bug fix: loading of default sysinit file works. (thanks to Leonid
1826 * bug fix: better detection of circularities in the file-compiler.
1827 (reported by Marco Monteiro)
1828 * bug fix: the CL pathname functions now work with files that have
1829 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1830 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1831 systems with Unix98 pty semantics.
1832 * bug fix: ASDF-INSTALL will now work with bsd tar.
1833 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1835 * bug fix: timers expiring in dead threads no longer cause a
1836 type-error (reported by Paul "Nonny Mouse").
1837 * bug fix: thanks to more lightweight single-stepper instrumentation,
1838 code compiled with (DEBUG 3) will compile and execute significantly faster,
1839 and will have more accurate type-inferencing than before
1840 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1841 whose bindings are modified
1842 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1843 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1844 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1845 CL:SOFTWARE-VERSION with proper version
1847 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1848 * feature: implemented the READER-METHOD-CLASS and
1849 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1850 as specified by AMOP.
1851 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1853 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1854 (thanks to Lutz Euler)
1855 * optimization: hashing of general arrays and vectors has been
1856 improved. (reported by Any Fingerhut)
1857 * enhancement: SB-INTROSPECT is now able to find definitions of
1858 profiled functions. (thanks to Troels Henriksen)
1859 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1860 as well, allowing compiler-macros for SETF-functions to expand.
1861 * enhancement: step-instrumentation no longer wraps known
1862 single-value functions with multiple-value context, allowing
1863 better type inference.
1864 * fixed bug #337: use of MAKE-METHOD in method combination now works
1865 even in the presence of user-defined method classes. (reported by
1866 Bruno Haible and Pascal Costanza)
1867 * fixed bug #339(c): if there are applicable methods not part of any
1868 long-form method-combination group, call INVALID-METHOD-ERROR.
1869 (reported by Bruno Haible)
1870 * fixed bug #361: the :FUNCTION initarg in the protocol for
1871 initialization of methods can now be used to override
1872 internally-produced optimized functions. (reported by Bruno
1874 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1875 system-provided lambda expression no longer cause warnings about
1876 unbound #:|pv-table| symbols.
1877 * bug fix: improved the handling of type declarations and the
1878 detection of violations for keyword arguments with non-constant
1880 * bug fix: potentially erronous calls to PATHNAME and
1881 MERGE-PATHNAMES were being flushed in some cases.
1882 (reported by Richard Kreuter)
1883 * bug fix: compiled calls to TYPEP were mishandling obsolete
1884 instances. (reported by James Bielman and Attila Lendvai)
1885 * bug fix: format strings with ~> without matching ~< no longer
1886 trigger an AVER, but signal an understandable error instead.
1887 (reported by Antonio Martinez)
1888 * bug fix: specifying an output-file without a pathname-type for
1889 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1890 of input-file instead of "fasl". (reported by Robert Dodier)
1891 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1892 (reported by James Y Knight).
1893 * bug fix: compiler-macros-function did not consider the environment
1894 argument for shadowing by local functions.
1895 * bug fix: compiler-macros expansion was inhibited by local INLINE
1897 * bug fix: inline expansions of known functions were subject to
1898 step-instrumentation in high debug policies, leading to problems
1899 with type-inference.
1900 * bug fix: compiler failed to differentiate between different CONS
1901 types in some cases.
1902 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1903 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1904 * bug fix: #368: incorrect use of expressed vs. upgraded array
1906 * bug fix: #306a: more precise unions of array types.
1907 * thread-safety improvements:
1908 ** CONDITION-WAIT could return early on Linux, if the thread was
1909 interrupted and subsequently continued with SIGCONT.
1910 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1912 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1913 * added support for the ucs-2 external format. (contributed by Ivan
1915 * minor incompatible change: pretty printing of objects of type
1916 (cons symbol) is, in the default pprint-dispatch-table, now
1917 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1919 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1920 called later in a class's lifetime, possibly as late as when the
1921 first instance of the class is created. Previously,
1922 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1923 class became finalizeable.
1924 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1925 for multibyte external-format streams. (thanks to "vbzoli")
1926 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1927 with :ALLOCATION :CLASS inherited from superclasses of the
1929 * fixed bug: anonymous classes can now be created using the :NAME
1930 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1931 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1932 * fixed bug: core-files saved with :EXECUTABLE T can again be
1933 executed when SBCL_HOME isn't set. (reported by James Knight)
1934 * fixed bug: toplevel LOCALLY forms with declarations could
1935 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1936 * fixed bug: printing from several different threads using different
1937 values of *print-case* could cause invalid output, due to
1938 some internal special variables of the printer not being bound
1939 thread-locally (reported by Max Mikhanosha)
1940 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1941 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1942 (reported by Pascal Costanza)
1943 * fixed bug: FINALIZE-INHERITANCE is called from
1944 REINITIALIZE-INSTANCE on classes when the class has previously
1945 been finalized, as required by AMOP.
1946 * minor code generation optimizations:
1947 ** better register allocation in CLOS dispatching functions
1948 ** overflow detection when coercing signed bytes to fixnums on x86-64
1949 ** is now implemented with one IMUL instruction instead of three shifts
1950 ** more efficient bit-vector access on x86 and x86-64
1951 ** more efficient access to raw structure slots on x86 and x86-64
1952 * fixed some bugs revealed by Paul Dietz' test suite:
1953 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1954 return its argument.
1956 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1957 * feature: thread support on Solaris/x86, and experimental thread support
1959 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1961 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1962 default method for SLOT-UNBOUND.
1963 * minor incompatible change: prevent the user from specializing the
1964 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1965 somewhat counter to the intent of the protocol, I (CSR) think, and
1966 additionally it just doesn't work in SBCL as currently
1967 implemented, thanks to optimizations (that are always valid for
1968 the other three SLOT-VALUEish functions, but not for the setter).
1969 * minor incompatible change: the :SB-LDB feature is now enabled by
1970 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1971 the low-level debugger.
1972 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1973 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1974 down to an SB-SYS:FD-STREAM, allowing direct communication in
1975 more cases. Temporary files and pipes are still used as a fallback
1977 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1978 on the non-reentrant C functions localtime(3) and gmtime(3).
1979 * bug fix: global optimization policy was not visible in LOCALLY and
1981 * bug fix: class objects can be used as specializers in methods.
1982 (reported by Pascal Costanza)
1983 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1984 with a type error. (reported by blitz_ on #lisp)
1985 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1986 failed with a type error. (reported by Pascal Bourguignon)
1987 * bug fix: merging pathnames against defaults with :DIRECTORY
1988 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1989 (reported by James Y Knight)
1990 * bug fix: saving large (>2GB) cores on x86-64 now works
1991 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1992 constant index and a (simple-array (signed-byte 32)) array
1993 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1994 error (patch by Robert J. Macomber)
1995 * feature: TIME now displays the amount of run-time spent in GC
1996 * bug fix: The debugger now does a better job of respecting
1997 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1998 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1999 workaround for bug 403.)
2000 * bug fix: floating point exception handling now works on FreeBSD
2001 (thanks to NIIMI Satoshi)
2002 * fixed some bugs revealed by Paul Dietz' test suite:
2003 ** MISC.641: LET-conversion were not supposed to work in late
2005 * improvements to the Win32/x86 port:
2006 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2007 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2009 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2010 * new feature: source path information is generated for macro-expansion
2011 errors for use in IDE's like Slime (thanks to Helmut Eller)
2012 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2013 * bug fix: compiler does not loop forever on an invalid type in
2015 * improvement: compilation of most CLOS applications is significantly
2017 * optimization: added a limited bytecode compiler for simple toplevel
2018 forms, speeding up compilation and FASL loading
2019 * bug fix: the statistical profiler now properly distinguishes anonymous
2022 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2023 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2024 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2025 into subclasses of the finalized class. Now user calls to
2026 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2027 system return before any subclasses are finalized.
2028 * minor incompatible change: The reader no longer ignores errors
2029 regarding non-existent packages in #+ and #- feature tests.
2030 * new feature: command line options --no-sysinit, --no-userinit to
2031 inhibit loading the corresponding init files
2032 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2033 for sending data through UDP sockets (thanks to François-René Rideau)
2034 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2035 error is signalled instead (thanks to François-René Rideau)
2036 * minor incompatible change: Error signalling behaviour of lexical
2037 operations violating package locks has changed slightly. Refer to
2038 documentation on package locks for details.
2039 * enhancement: EVAL can process IF-expressions without resorting to the
2041 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2042 constant-folded properly due to missing out-of-line functions.
2043 (reported by Mika Pihlajamäki)
2044 * bug fix: LISTEN sometimes returned T even in cases where no data was
2045 immediately available from the stream
2046 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2047 were reversed. (reported by Levente Mészáros)
2048 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2049 when given a vector displaced to an adjustable array. (reported
2051 * bug fix: derivation of float boundaries from numbers outside the
2052 appropriate float range (reported by John Wiseman)
2053 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2055 * bug fix: precomputing cache entries for generic functions with
2056 some subclasses of specializers as yet invalid does not attempt to
2057 fill a cache line with a negative offset. (reported by Levente
2059 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2060 allow condition class objects as arguments to DOCUMENTATION and
2061 (SETF DOCUMENTATION); only find and set documentation for
2062 structure names for the STRUCTURE doc-type. (suggested by Gary
2064 * improvements to the Win32/x86 port:
2065 ** (user-homedir-pathname) and default initialization file
2066 locations now know about the user's "Documents and Settings"
2067 directory (thanks to Yaroslav Kavenchuk)
2068 ** run-program is implemented (thanks to Mike Thomas)
2069 ** sockets support (thanks to Timothy Ritchey)
2070 ** better backtrace support (thanks to Alastair Bridgewater)
2071 ** sb-grovel supported
2072 ** asdf-install and sb-posix work somewhat
2073 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2074 * improvements to the Solaris/x86 port:
2075 ** works on Solaris 11/Solaris Express
2076 ** floating-point exception handling support
2077 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2078 * fixed some bugs revealed by Paul Dietz' test suite:
2079 ** REMOVE-METHOD returns its generic function argument even when
2080 the method is not one of the generic functions' methods.
2081 ** objects declared as MEMBER types can be admissible arguments to
2082 structure accessors.
2083 ** printing characters should simply be printed by the FORMAT ~:C
2085 ** compiler failure when compiling functions with hairy constant
2086 defaults for optional parameters.
2087 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2088 function, which is already optimized.
2090 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2091 * new platform: experimental support for SBCL x86/Darwin, including
2092 MacOS X 10.4.5 on Intel.
2093 * new feature: Unicode character names are now known to the system
2094 (through CHAR-NAME and NAME-CHAR).
2095 * new feature: the filesystem location of SBCL's core file is
2096 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2097 * minor incompatible change: the contrib modules SB-POSIX and
2098 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2099 this change is to make it easier to distribute
2100 location-independent binaries.
2101 * bug fix: as implied by AMOP, standardized classes no longer have
2102 slots named by external symbols of public packages. (reported by
2104 * optimization: calling functions via constant symbols -- as in
2105 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2106 via the function object as in (FUNCALL #'FOO).
2107 * optimization: on x86 and x86-64, the calling convention for the
2108 case of dealing with an unknown number of values has been altered
2109 to be friendlier to the prediction heuristics implemented,
2110 particularly with reference to CALL and RET pairing. (thanks to
2111 Alastair Bridgewater)
2112 * optimization: on x86, the code for access to thread-local symbol
2113 values and binding/unbinding of thread-local symbols is smaller.
2114 (thanks to Alastair Bridgewater)
2115 * enhancement: CONSTANTP is now able to determine constantness of
2116 more complex forms, including calls to constant-foldable standardized
2117 functions and some special forms beyond QUOTE.
2118 * fixed bug: occasional GC crashes on Solaris/x86
2119 * optimization: x86-64 supports stack allocation of results of simple
2120 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2121 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2122 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2123 (thanks to James Knight)
2124 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2125 by the standard (thanks to Stephen Compall)
2127 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2128 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2129 be used for bundling the runtime and the core file into one
2130 executable binary. This feature is not currently supported on all SBCL
2131 platforms. (thanks to James Bielman and NIIMI Satoshi)
2132 * new feature: a generational or ephemeral garbage collector is now
2133 the default on the PowerPC platform (both Linux and Darwin). The
2134 old Cheney (stop and copy) collector is a build-time option.
2135 (thanks to Cyrus Harmon, after Raymond Toy)
2136 * minor incompatible change: the method by which SBCL finds its
2137 contributed modules has changed; it no longer relies on symbolic
2138 links from an $SBCL_HOME/systems directory, but searches directly
2139 in the subdirectories of $SBCL_HOME.
2140 * enhancement: the dynamic heap size on the Linux/PPC platform is
2141 markedly larger, even using the older Cheney garbage collector.
2142 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2143 certain complicated string types. (reported by Gary King)
2144 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2145 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2146 * fixed bug: DOCUMENTATION on structures no longer signals an
2147 error if no structure type of the right name exists. (reported by
2149 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2150 applicable non-standard primary or :AROUND method on
2151 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2152 no longer cause unbound variable errors. (reported by Kevin Reid)
2153 * fixed bug: metacircle resolution in cases where methods have slots
2154 added before the slots from STANDARD-METHOD. (reported by Jean
2156 * fixed bug: the Power PC assembly code for calling into lisp
2157 sometimes computed its return address wrongly (depending on the
2158 15th bit of the address, fixed at link time). This used to
2159 manifest itself in a segmentation violation while building PCL.
2160 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2161 many others over the years)
2162 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2163 the stack pointer (treated as a signed integer) is negative.
2164 (thanks to Peter van Eynde)
2166 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2167 * new platform: experimental support for the Windows operating
2168 system has been added. (thanks to Alastair Bridgewater)
2169 * fixed several bugs in and robustified the PPC FFI (including
2170 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2171 * bug fix: allow non-simple string symbol names (reported by Paul
2173 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2175 * bug fix: saving a core corrupted callbacks on x86/x86-64
2176 * bug fix: closed a loophole in metacircularity detection and
2177 grounding in the PCL implementation of CLOS.
2178 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2179 (reported by tomppa on #lisp)
2180 * bug fix: clear the direction flag on Lisp -> C transitions, as
2181 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2182 (reported by Andrej Grozin and Hendrik Maryns)
2183 * optimization: major improvements to GC efficiency on GENCGC platforms
2184 * optimization: faster implementation of EQUAL
2185 * optimization: emit more efficient opcodes for some common
2186 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2187 * optimization: several other minor code-generation improvements on x86-64
2188 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2190 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2191 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2192 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2193 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2194 by ANSI as a generic function, and for consistency (SETF
2195 GENERIC-FUNCTION-NAME) is treated likewise.
2196 * fixed bug #233.b: make constraint propagation notice when a variable
2197 value is changed after it is referenced but before it is used
2198 * fixed bug #296: no more arbitrary behaviour from filenames with
2199 odd characters as --load arguments. (reported by Adam Warner)
2200 * fixed bug #390: :CHARACTER-SET pathname components now work as
2201 expected. (reported by Tim Daly Jr)
2202 * fixed bug #391: complicated :TYPE intersections in slot
2203 definitions no longer cause an error in PCL internals.
2204 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2205 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2206 returning the number of octets which would be written to the
2207 file-stream. (thanks to Robert J. Macomber)
2208 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2209 arguments to the internal stream functions. (thanks to David
2211 * bug fix: stack exhaustion is now handled on the x86/SunOS
2212 platform. (thanks to Daisuke Homma)
2213 * bug fix: more accurate ROOM results on GENCGC platforms
2214 * optimization: improved type inference for arithmetic-for
2215 index variables in LOOP
2216 * optimization: faster floating-point SQRT on x86-64
2217 * fixed some bugs revealed by Paul Dietz' test suite:
2218 ** DOCUMENTATION returns NIL instead of "" for method combinations
2219 that don't have a docstring
2221 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2222 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2223 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2224 therefore are not customizeable by user code (as seems to be at
2225 least permitted and maybe required by AMOP). As a consolation,
2226 however, the SBCL implementation of these functions now calls
2227 REINITIALIZE-INSTANCE as specified by AMOP.
2228 * bug fix: slot-definition documentation is propagated as per ANSI
2229 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2230 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2231 argument, as do eslotd initialization methods. (from Pascal
2232 Costanza's "Closer" project)
2233 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2234 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2236 * bug fix: it is now possible to have more than one subclass of
2237 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2238 (reported by Bruno Haible, Pascal Costanza and others)
2239 * bug fix: the dependent update protocol now works for generic
2240 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2241 and Pascal Costanza)
2242 * bug fix: condition-class instances corresponding to
2243 DEFINE-CONDITION forms are now created eagerly. (reported by
2244 Kalle Olavi Niemitalo on comp.lang.lisp)
2245 * bug fix: floating point printing is more accurate in some
2246 circumstances. (thanks to Simon Alexander)
2247 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2248 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2249 * bug fix: callbacks on OS X now preserve stack-alignment.
2250 (thanks to Cyrus Harmon)
2251 * enhancement: the x86-64 disassembler is much better at
2252 disassembling SSE instructions. (thanks to Lutz Euler)
2253 * enhancement: CHECK-TYPE on a variable now allows type-inference
2254 (thanks to Vincent Arkesteijn)
2255 * optimization: improved performance of EUC-JP external format.
2256 (thanks to NIIMI Satoshi)
2257 * optimization: performance improvements to IO on file streams of
2258 :ELEMENT-TYPE CHARACTER
2259 * optimization: much faster memory allocation on x86-64
2260 * optimization: faster garbage collections (latency and throughput)
2262 * optimization: faster bignum subtraction and division on x86 and x86-64
2263 (thanks to Lutz Euler)
2264 * optimization: more accurate type-inference for loops that use a
2265 floating point index variable or a negative step.
2267 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2268 * bug fix: add a workaround to SBCL looping infinitely at startup on
2269 Linux kernels with apparently buggy implementations of personality().
2270 (thanks to Svein Ove Aas)
2271 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2272 (thanks to David Lichteblau)
2273 * bug fix: local bindings shadow global symbol macros for
2274 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2275 * optimization: non-open coded uses of numeric comparison operators
2276 (e.g. >) no longer cons when called with more than one parameter
2277 on platforms supporting dynamic-extent allocation.
2278 * enhancement: saving cores with foreign code loaded is now supported
2279 on MIPS/Linux in addition to the previously supported platforms.
2280 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2281 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2282 * bug fix: division by zero in sb-sprof when no samples were collected
2283 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2284 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2285 (thanks to Alexander Kjeldaas)
2286 * new feature: ignoring the return values of destructive functions
2287 like NREVERSE signals a compile-time style-warning.
2288 (thanks to Kevin Reid)
2289 * new feature: the alignment of alien structure fields can be
2290 explicitly specified. (thanks to Cyrus Harmon)
2291 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2292 and dump core on SIGQUIT
2294 ** incompatible change: threads do not inherit values of specials
2295 from their parents (see manual)
2296 ** bug fix: threads stacks belonging to dead threads are freed by the
2297 next exiting thread, no need to gc to collect thread stacks anymore
2298 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2299 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2300 ** bug fix: dynamic variable and thread start related gc lossage
2301 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2303 * fixed some bugs revealed by Paul Dietz' test suite:
2304 ** SUBTYPEP is slightly more accurate on heinously complicated
2305 CONS types where some of the members have uncertain (in the
2306 NIL, NIL sense) type relationships to each other.
2308 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2309 no longer purified unless :PURIFY T is explicitly specified.
2310 ** Non-purified cores are significantly smaller than before
2312 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2313 * new feature: timers based on Zach Beane's excellent timer package
2314 * added support for the following external formats: koi8-u,
2315 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2316 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2317 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2318 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2319 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2320 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2321 * incompatible change: a threaded SBCL will no longer revert to
2322 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2323 * bug fix: interrupts are disabled until startup is complete; no
2324 more sigsegvs when receiving a signal to soon
2325 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2327 * bug fix: add a workaround for the memory randomization features in
2328 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2329 workaround will only be in effect on systems with the proc filesystem
2331 * bug fix: printing objects of type HASH-TABLE signals a
2332 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2334 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2335 have been running for over 50 days. (reported by Gilbert Baumann)
2336 * bug fix: the logic for getting names of functions gets less
2337 confused when confronded with alternate-metaclass
2338 funcallable-instances. (reported by Cyrus Harmon)
2339 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2340 consistent, even on internal alternate-metaclass objects.
2341 * bug fix: flush closure information collected by physical
2342 environment analysis prepass before the main pass. (bug reported
2344 * bug fix: compiler pack phase does not modify a hashtable, which is
2345 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2346 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2347 may be expanded. (reported by Alexander <malishev> on c.l.l)
2348 * bug fix: no more style-warnings when compiling code using LAST
2349 under high-SPEED low-SPACE settings. (reported by David Wallin
2351 * fixed some incompatibilities between SBCL's MOP and the MOP
2353 ** the METAOBJECT class is now implemented;
2354 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2355 STANDARD-OBJECT, as required;
2356 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2357 now compatible (as required by VALIDATE-SUPERCLASS); there
2358 remains a consistency requirement over the presence or absence
2359 of the FUNCTION class in the superclass list of finalized
2360 classes; see the manual for more details;
2361 ** the :AROUND method for COMPUTE-SLOTS on
2362 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2363 requested slot ordering.
2365 ** bug fix: parent thread now can be gc'ed even with a live
2367 ** bug fix: binding a special with PROGV to no value is not
2368 the same as that symbol not having been bound (thanks to
2370 ** bug fix: binding specials is thread safe (thanks to
2372 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2373 and SB-SPROF do not die with 'no handler for signal XX in
2374 interrupt_handle_now(..)' anymore
2375 ** bug fix: WITH-TIMEOUT works with multiple running threads
2376 * fixed some bugs revealed by Paul Dietz' test suite:
2377 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2378 the :method-class keyword argument.
2380 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2381 * new port: the Solaris operating system on x86 processors is now
2382 mostly supported, though some rough edges in the environment
2383 remain. (thanks to Daisuke Homma)
2384 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2385 space for its heap. (thanks to Thiemo Seufer)
2386 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2387 closures. (thanks to Thiemo Seufer)
2388 * minor incompatible change: eof selects abort in the debugger.
2389 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2390 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2392 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2393 deprecated, and will go away in a future revision of SBCL.
2394 * minor incompatible change: GC-ON and GC-OFF are no longer
2395 implemented with a counter, it does not matter how many times gc
2396 is switched on or off
2397 * bug fix: discriminating functions for generic function classes
2398 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2399 make invalid assumptions about method precedence order. (reported
2401 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2402 platforms. (thanks to Thiemo Seufer)
2403 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2404 * bug fix: correct pathname printing with printer escaping is on.
2405 (thanks to Kevin Reid)
2406 * bug fix: complex VOP definitions in "user-space" no longer trigger
2407 package locks. (reported by Zach Beane)
2408 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2409 for funcallable-instance functions, and is no different from
2411 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2412 characters in the current readtable. (reported by Nicholas Neuss)
2413 * bug fix: SUBTYPEP on various CONS types returns more a more
2414 accurate acknowledgment of its certainty.
2415 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2416 lists in some cases. This partially fixes bug 384.
2417 * flush all standard streams before prompting in the REPL and the
2419 * bug fix: signal handling and triggering gc do not conflict
2420 directly anymore, in particular a high frequency sb-sprof does
2421 not prevent gc from running
2422 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2423 approximation for timezone and DST information between the
2424 universal time epoch and the smallest negative 32-bit time_t.
2425 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2426 year 1899 so long as the encoded time is non-negative.
2427 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2428 the correct answer for non-constant rotate amounts when performing
2429 an inline 32-bit rotation.
2431 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2432 there is only one thread in the session
2433 ** bug fix: memory leak for streams created in one thread and
2434 written to in another
2435 ** bug fix: lockup when compiled with gcc4
2436 ** bug fix: race that allows the gc to be triggered when gc is
2438 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2439 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2441 ** bug fix: finished threads are gc'ed properly
2442 * fixed some bugs revealed by Paul Dietz' test suite:
2443 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2444 has arguments with a different set of applicable methods from
2445 the orignal arguments.
2446 ** The type error thrown by MAP now has a correct expected-type
2448 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2449 name a compiled function.
2450 ** Three MISC tests where a large bignum was improperly coerced to
2451 a float that couldn't represent that bignum during type
2452 derivation were fixed.
2453 ** SUBTYPEP can now handle types involving the negation of a
2454 list-form FUNCTION type.
2455 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2456 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2457 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2459 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2460 * New feature: Experimental support for bivalent streams: streams
2461 opened with :element-type :default now allow character and binary
2462 (unsigned-byte 8) I/O
2463 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2464 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2466 * bug fix: no more highly sporadic "couldn't check whether ~S is
2467 readable" when reading a stream and an interrupt hits in the middle
2468 of a select system call
2469 * compiler better recognizes complex arrays (reported by Eduardo
2471 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2472 for variables on SBCL built with linkage-tables. (reported by Luis
2474 * various error reporting improvements.
2475 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2476 (Thanks to Thiemo Seufer)
2477 * bug fix: nested reader invokations work correctly
2478 * bug fix: it is possible to have simultaneous references to foreign
2479 code and foreign data with the same name.
2481 ** added x86-64 support
2482 ** incompatible change: the threading api now works with thread
2483 objects instead of thread ids
2484 ** bug fix: threads are protected from signals and interruption when
2485 starting up or going down
2486 ** bug fix: a race where an exiting thread could lose its stack to gc
2487 ** bug fix: don't halt on infinite error in threads if possible
2488 ** fixed numerous gc deadlocks introduced in the pthread merge
2489 ** bug fix: fixed thread safety issues in read and print
2490 ** bug fix: debugger doesn't hang on session lock if interrupted at
2491 an inappropriate moment
2492 ** bug fix: run-program is now thread safe(r)
2493 ** bug fix: inner with-recursive-lock no longer releases the mutex
2494 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2495 * fixed some bugs revealed by Paul Dietz' test suite:
2496 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2497 EXPECTED-TYPE slots filled.
2498 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2500 ** MAKE-CONDITION accepts classes as type-designators.
2501 ** COMPILE may never return NIL.
2502 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2503 range before calling Unix time functions
2505 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2506 * numerous signal handling fixes to increase stability
2507 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2508 * minor incompatible change: we now correctly canonize default
2509 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2510 as per the MOP, rather than the historical (INITARG INITFUNCTION
2511 INITFORM). (reported by Bruno Haible)
2512 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2513 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2514 for more information.
2515 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2516 pathname is a directory pathname.
2517 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2518 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2520 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2521 :METACLASS argument in addition to a class name. (reported by
2522 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2523 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2524 (reported by Bruno Haible; patch from Gerd Moellmann)
2525 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2527 * bug fix: more cleanups to the floating point exception handling on
2528 x86-64 (thanks to James Knight)
2529 * bug fix: the compiler does not try to constant fold calls of
2530 COERCE and BIT-* functions when they return freshly constructed
2531 objects. (reported by Nikodemus Siivola and Paul Dietz)
2532 * optimization: improved the MIPS versions of generic (in the
2533 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2534 * optimization: direct conversion of (unsigned-byte 32) to floats on
2535 the PowerPC platform.
2536 * optimization: structure instances with raw slots now use less
2537 memory, and probably show better memory locality. (thanks to
2539 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2540 are treated as requests for stack allocation on the x86-64,
2541 Alpha-32, PPC and SPARC platforms.
2542 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2543 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2544 (thanks to Tony Martinez)
2546 ** gcing a dead thread can no longer lead to lockups
2547 ** threads block signals until they are set up properly
2548 ** errno is no longer shared by threads
2549 ** interrupt-thread restores the eflags register on x86
2550 ** fixed some lockups due to gc/thread interaction
2551 * fixed some bugs revealed by Paul Dietz' test suite:
2552 ** invalid dotted lists no longer raise a read error when
2553 *READ-SUPPRESS* is T
2554 ** signal an error if a symbol that names a declaration is used
2555 as the name of a type, or vice versa
2556 ** allow using the (declare (typespec var*)) abbreviation for
2557 (declare (type typespec var*)) with all type specifiers
2558 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2559 ** always return NIL from PPRINT-POP when OBJECT is NIL
2560 ** don't signal errors when pretty-printing malformed LABELS,
2561 FLET or MACROLET forms
2562 ** declarations in a DOLIST body are also in scope for the
2564 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2566 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2569 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2570 * fixed cross-compiler leakages that prevented building a 32-bit
2571 target with a 64-bit host compiler.
2572 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2573 opened with :IF-EXISTS :OVERWRITE.
2574 * fixed bug 281: error for an invalid qualifier in a short-form method
2575 combination method is not signalled until the faulty method is called.
2576 * bug fix: iteration variable type inferrer failed to deal with open
2577 intervals. (reported by Alan Shields)
2578 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2579 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2580 or more runtime options were provided to the sbcl binary.
2581 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2582 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2583 * optimization: there's now a fast-path for fixnum arguments in the
2584 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2585 * optimization: the code generated on x86-64 is more compact thanks
2586 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2587 * bug fix: floating-point exception handling now partly works on
2588 x86-64. (Thanks to James Knight)
2589 * improvement to the MIPS backend from Thiemo Seufer: C-style
2590 64-bit long long arguments and return values to alien functions
2592 * fixed some bugs revealed by Paul Dietz' test suite:
2593 ** the type-error signalled from WARN has a filled-in DATUM slot.
2594 ** the type-error required when a stream is not associated with
2595 a file has the stream as its datum.
2596 ** type-errors on single-floats on x86-64 no longer have
2597 :INVALID-OBJECT as the datum
2598 ** the type-errors signalled for invalid function names now have
2599 a correct expected type
2600 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2601 for structures defined with a :TYPE. Documentation strings for
2602 typed structures are no longer immediately discarded
2603 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2604 broadcast streams and synonym streams. FILE-LENGTH now also works
2605 on broadcast streams.
2607 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2608 * incompatible change: the --noprogrammer option, deprecated since
2609 version 0.7.5, has been removed. Please use the equivalent
2610 --disable-debugger option instead.
2611 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2613 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2614 inoperational for a while now) has been completely removed.
2615 * null lexical environments are now printed as #<NULL-LEXENV>,
2616 significantly reducing the amount of clutter in typical backtraces.
2617 * documentation on weak pointers, finalization, and after GC hooks
2618 has been added to the manual.
2619 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2620 as other specialized array types, is much faster. SUBSEQ and
2621 COPY-SEQ on such arrays have also been sped up.
2622 * optimization: EQL is now more efficient when at least other argument
2623 is known to be of type (OR FIXNUM (NOT NUMBER)).
2624 * fixed bug: the runtime is now less vulnerable to changes in the
2625 size of the SBCL object on OS X, and virtual memory is reserved for
2626 all spaces that need to be at a fixed address.
2627 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2628 * fixed bug: finalizers and after GC hooks that cause consing are now
2630 * fixed bug: compiler error messages and summaries are now printed to
2631 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2632 * fixed inference of the upper bound of an iteration variable.
2633 (reported by Rajat Datta).
2634 * fixed bug 211e: calling local functions with duplicated constant
2635 keyword argument no longer causes a bogus style warning about an
2637 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2638 ftype declaration to be disregarded. (reported by Dave Roberts)
2639 * fixed bug 373: caused by erronous compilation of references to alien
2640 variables in the runtime on ppc/darwin.
2641 * fixed bug 376: CONJUGATE type deriver.
2642 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2643 (reported by Baughn on #lisp)
2644 * a cross-compiler bug on non-x86 platforms has been identified and
2645 fixed. (thanks to Bruno Haible)
2646 * improvements to the MIPS runtime code for increased stability.
2647 (thanks to Thiemo Seufer)
2648 * increased the maximimum compact environment size to allow
2649 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2650 * partial workaround for bug 135: don't name the function we're
2651 calling for hairy cases of EVAL, so as not to accumulate one environment
2652 entry per call to EVAL. (reported by Kevin Reid)
2653 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2654 * optimization: type testing for non-vector arrays should be faster.
2655 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2657 * bug fix: setting 31st element of a bit vector to zero did not work
2659 * bug fix: redefining a class definition which failed due to a
2660 previous accessor / function clash now works (but see BUGS entry
2661 #380 for more problems in this area). (thanks to Zach Beane)
2662 * the long form of DEFINE-METHOD-COMBINATION disables method group
2663 checking when given a single method group with pattern *. (thanks
2665 * on x86 compiler supports stack allocation of results of simple
2666 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2667 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2668 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2669 * fixed some bugs related to Unicode integration:
2670 ** the restarts for recovering from input and output encoding
2671 errors only appear when there is in fact such an error to
2673 * fixed some bugs revealed by Paul Dietz' test suite:
2674 ** MISC.549 and similar: late transformation of unsafe type
2675 assertions into derived types caused unexpected code
2677 ** SCALE-FLOAT type deriver is less wrong.
2678 ** type derivers for EXP, LOG and similar functions compute result
2679 types for complex arguments better.
2680 ** (MISC.563) CONJUGATE type deriver works for very restricted
2682 ** out-of-line type testers for character strings are available.
2683 ** EQUAL compiler transform understands specialness of objects
2685 ** accessing double-floats stored on the stack now works on x86-64.
2686 ** debugger internals could sometimes create invalid lispobjs,
2687 resulting in GC crashes.
2688 ** MISC.548: type check weakening can convert required type into
2690 ** initialization forms for bindings are not in scope of free special
2693 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2694 * incompatible change: thread support for non-NPTL systems has
2695 been removed - locking is buggy and unreliable. A threaded
2696 SBCL build will now warn at startup and refuse to create
2697 new threads, unless futex support is detected in the kernel
2698 * incompatible change: the top level REPL now has only an ABORT
2699 restart associated with it, not TOPLEVEL and ABORT as it used to.
2700 TOP and TOPLEVEL are now available as debugger commands for
2701 returning to the top level.
2702 * incompatible change: forms evaluated in the REPL now use the
2703 global optimization policy.
2704 * incompatible change: user- and system-initialization files are
2705 no longer processed with LOAD, but by READ and EVAL; hence the
2706 global optimization policy, startup package, readtable, etc,
2708 * The .fasl file format number has been incremented because of
2709 various incompatible changes.
2710 * internal entry point details and argument counts no longer appear
2711 in backtraces unless explicitly requested by setting
2712 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2713 * built-in and standard functions no longer have names like "top
2714 level local call to FOO".
2715 * fixed bug 32: functions defined in non-null lexical environments
2716 now have more legible printed representation
2717 * fixed bug 33: functions defined in non-null lexical environemnts
2718 are now more amenable to inspection by INSPECT.
2719 * workaround for bug 354: XEPs no longer appear in backtraces unless
2720 explicitly requested.
2721 * fixed bug: receiving the signal which results from attempting to
2722 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2723 SIGBUS on other *BSDs) on architectures where the C stack is also
2724 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2725 to debugger confusion or wild instability. (reported by Cheuksan
2727 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2728 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2729 (reported by Lutz Euler)
2730 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2731 compiled code. (reported by Paul Dietz)
2732 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2733 specialized parameter to a method to something that is not TYPEP
2734 the specializer is now possible.
2735 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2736 face of package deletion.
2737 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2738 pathname. (reported by David Tolpin on c.l.l)
2739 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2740 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2741 STRING-STREAM and FILE-STREAM, respectively.
2742 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2743 than previously; in addition, its test suite is now run on build.
2744 (thanks to Luke Gorrie)
2745 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2746 * optimization: added a immediate representation for single-floats
2748 * fixed some bugs revealed by Paul Dietz' test suite:
2749 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2750 ** attempting to create a package with a colliding nickname causes
2751 correctable errors to be signalled.
2752 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2753 ** several x86-64 backend bugs related to sign-extension of immediate
2756 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2757 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2758 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2760 * fixed loading of multiply forward-referenced layouts.
2761 (thanks to Cheuksan Wang)
2762 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2763 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2764 (see COMPILE-FILE documentation for details of :PRINT option)
2765 * fixed bugs 19 and 317: fixed-format floating point printing is
2766 more accurate. This also fixes a bug reported by Adam Warner
2767 related to the ~@F format directive.
2768 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2770 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2771 dispatch table if the from-char is a dispatch macro character.
2772 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2773 by the wordsize no longer ignore the last word. (reported by Lutz
2775 * fixed bug in type checking of dynamic-extent variables. (reported
2777 * optimization: sequence traversal functions use their freedom to
2778 coerce function designators to functions.
2779 * optimization: code with many calls to CLOS methods specialized on
2780 CLOS classes has had redundant type checks removed.
2781 * optimization: added declarations to speed up operations that access
2782 the internal character database (for example STRING-UPCASE)
2783 * optimization: comparison operations between floats and sufficiently small
2784 fixnums no longer create extra rationals
2785 * fixed some bugs related to Unicode integration:
2786 ** portions of multibyte characters at the end of buffers for
2787 character-based file input are correctly transferred to the
2788 start of the buffer at the next read.
2789 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2790 passing it through to OPEN.
2791 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2792 argument given to internal calls to OPEN.
2793 ** the built-in comment readers (introduced by character sequences
2794 ";" and "#|") are more forgiving to encoding errors; they will
2795 STYLE-WARN and then attempt to resync the stream at a character
2796 boundary. (thanks to Teemu Kalvas)
2797 * fixed some bugs in the x86-64 port:
2798 ** Negative short int return values from c-calls are sign-extended
2800 ** The stack is aligned to 16-bytes for c-calls, as required by
2801 the ABI. (thanks to Cheuksan Wang)
2802 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2803 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2804 for enums. (thanks to Vincent Arkesteijn)
2805 ** Multiple small optimizations and bugfixes for floating point
2807 * fixed some bugs revealed by Paul Dietz' test suite:
2808 ** Space, Tab, Linefeed, Return and Page have the invalid
2809 secondary constituent character trait.
2810 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2812 ** WITH-INPUT-FROM-STRING should only update the index place on
2814 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2815 works more reliably.
2816 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2817 with one-dimensional arrays with fill pointers.
2818 ** TYPE-OF failed on a complex with an integer realpart and a
2820 ** compiler failure during type inference for the code of form
2821 (IF (EQL X (THE ...)) ...) (MISC.535).
2823 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2824 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2825 platform. The port supports 61-bit fixnums, large memory spaces
2826 and reloading shared object files.
2827 * enhancement: saving cores with foreign code loaded is now
2828 supported on ppc/Darwin in addition to the previously supported
2830 * enhancement: the statistical profiler now walks deeper into the
2831 call stack for more meaningful call-graphs and accrued time
2832 reports (x86/x86-64 only). It also now reports time spent in
2834 * enhancement: it is now possible to trace most individual methods
2835 of a generic function in addition to tracing the generic function
2837 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2839 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2840 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2841 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2842 produces an error. (thanks to Vincent Arkesteijn)
2843 * bug fix: NAMESTRING on pathnames with :WILD components in their
2844 directories works correctly. (thanks to Artem V. Andreev)
2845 * fixed bug 125: compiler preserves identity of closures. (reported
2847 * bug fixed: functions with &REST arguments sometimes failed with
2848 "Undefined function" when compiled with (DEBUG 3). (reported by
2850 * bug fix: overflow during compiling of setting element of a bit
2851 vector with constant index and value. (reported by Timmy Douglas)
2852 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2853 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2854 * on x86 compiler partially supports stack allocation of dynamic-extent
2856 * GO and RETURN-FROM do not check the extent of their exit points
2857 when compiled with SAFETY 0.
2858 * fixed some bugs related to Unicode integration:
2859 ** encoding and decoding errors are now much more robustly
2860 handled; it should now be possible to recover even from invalid
2861 input or output to the terminal. (thanks to Teemu Kalvas)
2862 ** provided a first cut at implementing STRING-TO-OCTETS and
2863 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2864 ** altered the SB-MD5 contributed module slightly, changing the
2865 interface just enough for it to be supportable for builds where
2866 lisp characters are not eight bits.
2867 * fixed some bugs revealed by Paul Dietz' test suite:
2868 ** the FORMATTER-generated functions for ~V[ conditionals require
2869 the correct number of arguments.
2870 ** READ-FROM-STRING returns the mandated second value when applied
2871 to displaced strings.
2872 ** the #\Rubout and #\Backspace characters are treated as invalid
2873 constituent characters by the tokenizer.
2875 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2876 * new feature: reloading changed shared object files with
2877 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2878 * new feature: references to foreign variables and functions
2879 can now be compiled and loaded before the corresponding shared
2880 object file is loaded, as long as the foreign definitions are
2881 available at runtime.
2882 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2883 supported. (thanks to Dan Debertin)
2884 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2885 just keywords. (thanks to Vincent Arkesteijn)
2886 * fixed bug #331: structure-class instances corresponding to
2887 DEFSTRUCT forms are now created eagerly.
2888 * fixed bug #345: backtraces from calls to undefined functions work
2889 on x86 as well. Related bug #61 is now also partially fixed on x86
2890 (backtraces from throws to unknown catch tags.)
2891 * bug fix: lambda-list parsing is now stricter vrt. order and number
2892 of lambda-list keywords.
2893 * bug fix: as specified by AMOP, an error is signalled if a
2894 class-option appears multiple times in a DEFCLASS form. (reported
2896 * bug fix: RANDOM can be compiled when the compiler derives the type
2897 of its numeric argument as a disjoint set of small integers.
2898 (reported by Paul Dietz)
2899 * bug fix: starting a core saved with shared objects loaded when
2900 those objects are not available no longer causes threaded SBCL to
2901 hang. (reported by Sean Ross)
2902 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2904 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2905 argument, which must always be NIL. (reported by Kalle Niemitalo)
2906 * bug fix: printing 1.0d+23 no longer results in an error.
2907 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2908 * bug fix: structure slot setters preserve evaluation order. (thanks
2910 * fixed some bugs related to Unicode integration:
2911 ** RUN-PROGRAM can allow its child to take input from a Lisp
2912 stream. (reported by Stefan Scholl)
2913 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2914 locales. (reported by Ken Causey)
2915 * fixed some bugs revealed by Paul Dietz' test suite:
2916 ** INCF, DECF and REMF evaluate their place form as specified in
2918 ** FORMATTER expands ~{ ~} iteration directives with V or #
2919 parameters correctly.
2920 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2921 consequent uses no arguments correctly.
2922 ** the system has a partial understanding of the (COMPLEX RATIO)
2924 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2927 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2928 * new feature: a build-time option (controlled by the :SB-UNICODE
2929 keyword feature, enabled by default) for building the system with
2930 support for the entire 21-bit character space defined by the
2932 * new feature: the system now has rudimentary external-format
2933 support; the primary user-visible change at this time is that
2934 characters with the high bit set (such as lower-case-e-acute) will
2935 print correctly to a terminal in a UTF-8 environment.
2936 * minor incompatible change: BASE-CHAR no longer names a class;
2937 however, CHARACTER continues to do so, as required by ANSI.
2938 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2939 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2940 has been moved to the SB-EXT package (temporarily re-exported from
2942 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2943 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2945 * fixed bug #351: better error-handlind and reporting for malformed
2947 * fixed bug #350: bignum-printing is now more memory-efficient,
2948 allowing printing of very large bignums, eg. (expt 2 10000000).
2949 (reported by Bruno Haible)
2950 * fixed bug #302: better primitive-type selection for intersection
2952 * fixed bug #308: non-graphic characters now all have names, as
2953 required. (reported by Bruno Haible)
2954 * bug fix: redefining a class with different superclasses now correctly
2955 removes it from the direct-subclasses of its previous superclasses.
2956 (reported by David Morse)
2957 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2958 new value now works. (reported by Bruno Haible)
2959 * bug fix: correct canonicalization of multiple non-standard slot
2960 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2961 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2962 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2963 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2964 now exists, an signals an error.
2965 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2966 during macroexpansion for non-iteration variables as well. (reported
2967 by Bruno Haible for CMUCL)
2968 * bug fix: Cyclic structures and unprintable objects in compiler
2969 messages no longer cause errors. (reported by Bruno Haible)
2970 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2971 and READ-FROM-STRING all now return a primary value of NIL if
2972 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2973 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2974 (reported by Bruno Haible for CMUCL)
2975 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2976 do not designate a condition. (reported by Bruno Haible for
2978 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2979 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2980 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2981 permitting resolution in favour of any of the conflicting symbols.
2982 (reported by Bruno Haible for CMUCL)
2983 * bug fix: EQUAL compiler optimizations is less aggressive on
2984 strings which can potentially compare true despite having distinct
2985 specialized array element types.
2986 * bug fix: unit enumerations can be defined without dividing by
2987 zero. (thanks to Vincent Arkesteijn)
2988 * FORMAT compile-time argument count checking has been enhanced.
2989 (report from Bruno Haible for CMUCL)
2990 * a partial workaround for the bug 262: the compiler does not try to
2991 inline-expand a local function doing RETURN-FROM from a deleted
2992 BLOCK. (thanks to Peter Denno for the bug report and to David
2993 Wragg for the simple test case)
2994 * fixed some bugs revealed by Paul Dietz' test suite:
2995 ** RENAME-PACKAGE allows all package designators as new package
2997 ** constraint propagation and lambda variable substitution are
2998 more cautious in dealing with partially deleted code.
2999 ** compiler sometimes lost reoptimization passes.
3000 ** CERROR, given a condition as condition designator, passes its
3001 remaining arguments to the continue format control without
3003 ** Case-altering FORMAT directives work correctly on non-ASCII
3005 ** The REAL type specifier handles bounds outside the floating
3006 point ranges without signalling FLOATING-POINT-OVERFLOW.
3007 ** Functions with IR1-transformations can create intercomponent
3008 references to global functions.
3009 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3011 ** FORMAT ~R treats a nil value for its first parameter correctly.
3013 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3014 * enhancement: saving cores with foreign code loaded is now
3015 supported on x86/NetBSD and sparc/Linux in addition to the previously
3016 supported platforms.
3017 * bug fix: on some platforms repeated installations caused multiple
3018 copies of HTML documentation to be installed -- should not happen
3019 any more. (reported by Stefan Scholl)
3020 * bug fix: parsing self-recursive alien record types multiple times
3021 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3022 original patch by Helmut Eller for CMUCL)
3023 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3024 (thanks to Richard Kreuter)
3025 * bug fix: defining classes whose accessors are methods on existing
3026 generic functions in other (locked) packages no longer signals
3027 bogus package lock violations. (reported by François-René Rideau)
3028 * bug fix: special variables as DEFMETHOD parameters no longer have
3029 associated bogus type declarations. (reported by David Wragg and
3031 * bug fix: read-write consistency on streams of element-type
3032 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3033 * bug fix: redefiniton of the only method of a generic function with
3034 no DEFGENERIC no longer emits a full WARNING. In addition,
3035 redefinition of generic functions with no DEFGENERIC to an
3036 incompatible lambda list now signals an error. (thanks to Zach
3038 * bug fix: DEFGENERIC now works even when there's a function of the
3039 same name in an enclosing lexical environment. (thanks to Zach
3041 * fixed compiler failure, caused by instrumenting code during
3042 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3043 * optimization: added loop analysis and improved register allocation
3044 * fixed some bugs revealed by Paul Dietz' test suite:
3045 ** POSITION on displaced vectors with non-zero displacement
3046 returns the right answer.
3047 ** (SIMPLE-STRING) is a valid type specifier for sequence
3049 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3051 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3052 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3054 ** The justification version of the FORMAT ~< directive treats
3055 non-zero minpad parameter correctly.
3057 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3058 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3059 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3060 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3061 the supported interface.
3062 * new feature: Single-stepping of code compiled with DEBUG 2 or
3063 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3064 * new feature: saving cores with foreign code loaded is now
3065 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3066 Timothy Moore's work for CMUCL)
3067 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3068 parameters to * instead of NIL if no initform is supplied.
3069 (reported by Johan Bockgaard)
3070 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3071 correctly when FUNCALL appears as the car of the form. Note:
3072 despite this FUNCALL forms are not currently subject to
3073 compiler-macro expansion. (port of Raymond Toy's fix for the
3074 same from CMUCL, reported by Johan Bockgaard)
3075 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3076 (thanks for Teemu Kalvas)
3077 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3078 case instead of terminating the iteration (thanks for Julian
3079 Squires, Sean Champ and Raymond Toy)
3080 * bug fix: incorrect expansion of defgeneric that caused a style
3081 warning. (thanks for Zach Beane)
3082 * bug fix: slot accessor effective method computation works properly
3083 for classes with multiple non-standard applicable methods on
3084 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3085 * on x86 compiler supports stack allocation of results of LIST and
3086 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3087 CMUCL implementation by Gerd Moellmann)
3088 * fixed some bugs revealed by Paul Dietz' test suite:
3089 ** FORMAT strings with both the ~<~:;~> form of the justification
3090 directive and pretty-printing directives cause an error.
3092 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3093 * incompatible change: the internal functions
3094 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3095 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3096 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3097 instead of the old functions.
3098 * new feature: on platforms where "dladdr" is available foreign
3099 function names now appear in backtraces. (based on Helmut Eller's
3101 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3102 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3104 * documentation: ASDF manual is now distributed with SBCL.
3105 * bug fix: SBCL can now load its contributed modules with REQUIRE
3106 even if the system-provided entries have been removed from
3107 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3109 * bug fix: backtraces involving undefined functions or assembly
3110 routines are more informative. (thanks to Brian Downing)
3111 * bug fix: mutually referent alien structures now work correctly.
3112 (reported by Rick Taube)
3113 * bug fix: structures defined by WITH-ALIEN can be referred to
3114 within other definitions in the same WITH-ALIEN.
3115 * bug fix: division operators (MOD, TRUNCATE and the like) with
3116 constant zero divisors and integer dividends no longer generate
3118 * bug fix: provide default methods for INPUT-STREAM-P and
3119 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3120 * bug fix: improve the detection and resolution of MOP metacycles
3121 (where effective method computation depends on the generic function
3122 having its effective method computed). (reported by Bruno Haible)
3123 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3124 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3125 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3126 * bug fix: pathnames with relative directory components can be
3127 represented relative to default pathnames.
3128 * optimization: in taking the GCD of bignums, reduce the two bignums
3129 to approximately the same size (using Euclid's algorithm) before
3130 applying the more sophisticated binary GCD. (thanks to Juho
3132 * optimization: COUNT on bitvectors now operates word-at-a-time.
3133 * optimization: ASH with a positive, but not necessarily constant,
3134 (leftwards) shift, when in a modular context, is compiled to a
3136 * fixed some bugs revealed by Paul Dietz' test suite:
3137 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3138 if the corresponding argument is NIL.
3139 ** FORMAT directives accepting a minpad parameter treat negative
3141 ** literal commas as character parameters to FORMAT directives are
3143 ** literal spaces directly after ~<Newline> directives within a
3144 format-logical-block (~:< ~@:>) do not induce :FILL-style
3145 conditional newlines.
3146 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3147 as specified: it no longer includes conditional newlines).
3148 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3150 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3151 :PER-LINE-PREFIX argument does not evaluate to a string.
3153 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3154 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3155 the manual for details; for now, package locks can be disabled by
3156 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3157 if no major problems are found then it is likely that they will be
3158 compiled in unconditionally.
3159 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3160 unsupported operators on all platforms. To load a shared library
3161 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3162 object file, link it into a shared library outside of SBCL and
3163 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3165 * bug workaround: ROOM T and the GC were not working together
3166 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3167 reporting facility aren't preserved. That reporting has been
3168 disabled, so now until and unless someone figures out how to make it
3169 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3170 * minor incompatible change: as threatened around sbcl-0.8.0, the
3171 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3172 The symbols are also exported from SB-PCL for backwards
3173 compatibility, but more so than before SB-PCL should be treated as
3174 an implementation-internal package.
3175 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3177 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3178 It is known as of this release not to work on the Alpha, however.
3179 * fixed bug #167: errors signalled due to illegal syntax in method
3180 bodies are now more legible.
3181 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3182 designators and can hence be used with TYPEP.
3183 * fixed bug #333: CHECK-TYPE now ensures that the type error
3184 signalled, if any, has the right object to be accessed by
3185 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3186 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3187 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3189 * fixed bug #334: programmatic addition of slots using specialized
3190 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3191 and :ALLOCATION :CLASS slots.
3192 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3193 float exponents. (rereported by Peter Seibel)
3194 * fixed a bug: #\Space (and other whitespace characters) are no
3195 longer considered to be macro characters in standard syntax by
3196 GET-MACRO-CHARACTER.
3197 * fixed bug: initialization of condition class metaobjects no longer
3198 causes an instance of the condition to be created. (reported by
3200 * fixed bug: it is now possible to have slots such that
3201 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3202 description is neither :INSTANCE nor :CLASS.
3203 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3204 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3205 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3206 non-standard SLOT-DEFINITION-ALLOCATION values.
3207 * fixed bugs: various race conditions handling exiting threads.
3208 CL-PPCRE's thread torture test now passes.
3209 * fixed arguably-a-bug: GC time proportional to number of threads in
3210 system even when most of them are idle
3211 * optimization: improved performance of BIT and SBIT on bit-vectors.
3212 * .fasl file incompatibility: The fasl file version number has
3213 been incremented because of changes associated with package locks.
3215 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3216 * minor incompatible change: the system no longer provides
3217 optimization hints (conditions which are TYPEP
3218 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3219 mode; these hints are still emitted when higher SPEED optimization
3221 * new contrib module: a sampling profiler (profiling by statistical
3222 sampling, rather than by instrumenting functions) is available as
3223 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3224 * the behaviour of the standard function ED is now customizeable by
3225 third parties through a hook variable: see ED's documentation
3226 string for information on the protocol.
3227 * the compiler no longer emits efficiency notes for (FUNCALL X)
3228 when the type of X is uncertain under default optimization
3230 * fixed bug 276: mutating a binding of a specialized parameter to a
3231 method to something that is not TYPEP the specializer is now
3233 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3234 exhibit the required behaviour on the x86 platform. (thanks to
3235 Peter van Eynde, Eric Marsden and Bruno Haible)
3236 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3237 even for difficult arguments. (reported by Peter Graves)
3238 * fixed bug 141a: the backquote printer now descends quoted
3240 * fixed another bug in backquote printing: no more destructive
3241 modification of the form's list structure. (reported by Brian
3243 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3244 move between its address being taken and the call to
3245 interrupt_thread, fixing a crashing race condition.
3246 * the SB-POSIX contrib implementation has been adjusted so that it
3247 no longer exhibits ridiculously poor performance when constructing
3248 instances corresponding to C structs.
3250 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3251 * minor incompatible change: the sb-grovel contrib now treats C
3252 structures as alien (in the sense of SB-ALIEN) objects rather than
3253 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3254 has implications for memory management of client code
3255 (sb-grovel-returned objects must now be manually managed) and for
3256 type safety (alien objects now have full types).
3257 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3258 used to control emission of compiler diagnostics, rather than the
3259 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3260 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3261 quality should be considered deprecated.
3262 * install.sh now installs the user manual as well
3263 * (not quite a new documentable feature, but worth considering in
3264 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3265 beginnings of a semantically meaningful condition hierarchy is
3266 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3268 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3269 designator as the defaults argument.
3270 * fixed bug: Displaced arrays whose displaced-to array has become
3271 too small now cause ARRAY-DIMENSION to signal an error, providing
3272 for safer bounds-checking. (reported by Bruno Haible)
3273 * fixed bug: DEFCLASS slot definitions with identical :READER and
3274 :WRITER names now signal a reasonable error. (reported by Thomas
3276 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3278 * fixed bug: Invalid slot specification errors now print correctly.
3279 (thanks to Zach Beane)
3280 * fixed bug 320: Shared to local slot value transfers in class
3281 redefinitions now happen corrently from superclasses as
3282 well. (reported by Bruno Haible)
3283 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3285 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3286 improper lists correctly. (reported by Bruno Haible)
3287 * fixed bug 313: source-transform for <fun-name> was erroneously
3288 applied to a call of a value of a variable with name <fun-name>.
3289 (reported by Antonio Menezes Leitao)
3290 * fixed bug 307: The obsolete instance protocol ensures that
3291 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3292 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3293 remove dead unknown-values globs from the middle of the stack.
3294 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3295 easier to resume long computations after using *BREAK-ON-SIGNALS*
3296 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3297 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3298 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3299 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3300 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3301 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3303 * fixed a (fairly theoretical) bug in string printing: if
3304 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3305 does not have array-element-type equal to the most general string
3307 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3308 function name. (thanks to Nikodemus Siivola)
3309 * fixed bug: compile-time format string checker failed on
3310 non-closed ~{. (reported by Thomas F Burdick)
3311 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3312 don't warn on legal loop code involving more than one aggregate
3313 boolean. (thanks to Nikodemus Siivola)
3314 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3315 in keyword position to MAKE-PACKAGE was not being reported as
3317 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3318 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3320 * fixed bugs 280 and 312: the checking for multiple definitions in a
3321 file is less likely to become confused by uses of inline
3323 * fixed bug: the #S reader macro performs the keyword coercion
3324 specified for slot names. (reported by Kalle Niemitalo)
3325 * fixed bug: lambda lists may contain symbols whose names start with
3326 & but are not lambda-list-keywords; their occurrence triggers a
3328 * fixed bug 321: define-method-combination argument lambda lists do
3329 not cause invalid code to be generated when &optional or &aux
3330 variables have default values. (reported by Bruno Haible)
3331 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3332 have CLOS classes; this appears also to have fixed reported
3333 instability in stack exhaustion detection.
3334 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3335 MUFFLE-WARNING when no associated restart is present is now
3337 * optimization: rearranged the expansion of various defining macros
3338 so that each expands into only one top-level form in a
3339 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3341 * optimization: used a previously little-used slot in symbols to
3342 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3344 * fixed some bugs revealed by Paul Dietz' test suite:
3345 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3347 ** Fixed an optimization bug related to inheritance of initforms
3348 from local to shared slots.
3349 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3350 ** CAST optimizer forgot to flush argument derived type.
3351 ** print/read consistency on floats is now orders of magnitude
3352 more likely. (thanks also to Bruno Haible for a similar report
3354 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3355 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3356 for objects of type REAL. Make it so.
3357 ** SXHASH is specified (infelicitously) to respect similarity,
3358 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3359 it so. (thanks to Markus Ziegler)
3360 ** on the Alpha, the compiler succeeds in compiling functions
3361 returning a known number of arguments greater than 63.
3362 ** fixed handling of invalid NIL arguments in keyword position
3364 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3366 ** provided a readably-printable representation for RANDOM-STATE
3368 ** ensured that pathnames, where they have a namestring, always
3369 print using #P"..." syntax.
3371 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3372 * Support for the forthcoming 2.0 version of the NetBSD kernel
3373 running on x86 hardware has been added. (thanks to Perry
3374 E. Metzger most immediately, and others for their past work)
3375 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3376 current release version; SBCL's OpenBSD support had been broken
3377 since about the time of OpenBSD's switch to ELF binary format.)
3378 * [placeholder for DX summary]
3379 ** user code with &REST lists declared dynamic-extent, under high
3380 speed or space and low safety and debug optimization policy.
3381 * The manual has been converted to Texinfo format and the debugger
3382 chapter from the cmucl manual has been added.
3383 * A facility has been added to extract documentation strings from
3384 sbcl and store them as Texinfo-formatted snippets for inclusion in
3385 the manual (via Texinfo's @include directive)
3386 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3387 the test case to Dave Roberts)
3388 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3389 pointers. (reported by Sean Ross)
3390 * bug fix: PROFILE output is printed nicely even for large numerical
3391 values. (thanks to Zach Beane)
3392 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3393 greater than 32 handle EOF correctly.
3394 * bug fix: on X86 an immediate argument of the IMUL instruction is
3395 correctly printed in disassembly. (thanks to Lutz Euler)
3396 * bug fix: class slots in redefined classes preserve their old
3397 values. (thanks to Bruno Haible and Nikodemus Siivola)
3398 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3399 succeeds. (reported by Marco Baringer)
3400 * fixed some bugs revealed by Paul Dietz' test suite:
3401 ** READ-SEQUENCE now works on ECHO-STREAMs.
3402 ** RATIONALIZE works more according to its specification. (thanks
3405 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3406 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3407 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3408 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3409 should matter to you only if you rebind the printer control
3410 variables and then find you want different bindings in the
3411 debugger than in the ordinary execution of your program.)
3412 * The runtime build system has been tweaked to support building
3413 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3414 assembler and linker. (thanks to Nikodemus Siivola)
3415 * Unbound, undefined, undeclared variables now trigger full
3416 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3417 more often programmer error than deliberate exploitation of undefined
3419 * optimization: the hash algorithm for strings has changed to one
3420 that is less vulnerable to spurious collisions. (thanks to Juho
3422 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3423 needless bounds checking. (thanks to Juho Snellman)
3424 * optimization: implemented multiplication as a modular
3425 (UNSIGNED-BYTE 32) operation on the PPC backend.
3426 * fixed some bugs revealed by Paul Dietz' test suite:
3427 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3429 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3430 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3431 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3433 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3435 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3437 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3438 their output stream on EOF from read.
3439 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3440 have been read to end-of-file.
3441 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3443 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3444 description of determination of which consecutive characters
3446 ** Printing the "Space" character with escaping on now yields "#\\ ",
3447 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3448 ** Reading floating-point numbers with *READ-BASE* set to a number
3449 less than 10 works correctly.
3450 ** Reading floating-point numbers with *READ-BASE* set to a number
3451 more than 10 works correctly.
3452 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3453 the readtable currently in effect.
3455 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3456 * minor incompatible change: parsing of namestrings on a physical
3457 (Unix) host has changed; numbers after the final #\. in a
3458 namestring are no longer interpreted as a version field. This is
3459 intented to be largely invisible to the user, except that the
3460 meaning of the namestring "*.*.*" has changed: it now refers to a
3461 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3462 should usually be replaced by
3463 (make-pathname :name :wild :type :wild :version :wild)
3464 with the added benefit that this is more likely to be portable.
3465 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3466 option to OPEN now signals an error if the file being opened
3467 exists; this may have an impact on existing code.
3468 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3469 signals received, on the PowerPC platforms (both Linux and
3470 Darwin). (thanks to Pierre Mai for pointing out the location of
3472 * several fixes on OS X: The system now builds and runs cleanly on
3473 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3474 (thanks to Brian Mastenbrook)
3475 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3476 second-resolution: integer multiples of 1/3600 between -24 and 24.
3477 (thanks to Vincent Arkesteijn)
3478 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3479 type when called with 1 argument; PEEK-CHAR checked type of
3480 PEEK-TYPE only after having read first character from a
3481 stream. (reported by Peter Graves)
3482 * bug fix: the garbage collector now has much better locality
3483 behaviour, and in particular no longer treats all memory as being
3484 exhausted when many small objects point to each other in a deeply
3486 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3487 recognized as being TYPEP their class.
3488 * bug fix: the PUSHNEW documentation string has been corrected.
3489 (thanks to Vincent Arkesteijn)
3490 * bug fix: defaulting of the value for the last of an atypically
3491 large number of multiple values being bound was not being
3492 performed correctly on the Alpha or PPC platforms
3493 * optimization: implemented multiplication as a modular
3494 (UNSIGNED-BYTE 32) operation on the x86 backend.
3495 * optimization: SEARCH on simple-base-strings can now be open-coded.
3496 (see also contrib/compiler-extras.lisp for inspiration for
3497 teaching the compiler about the Boyer-Moore algorithm).
3498 * value, returned by MAX (and MIN) called with several EQUALP, but
3499 not EQL, arguments now does not depend on compiler settings.
3500 * fixed some bugs revealed by Paul Dietz' test suite:
3501 ** in stack analysis liveness information is propagated from
3502 non-local entry points.
3503 ** pathwise CAST removing failed when the CAST node did not start
3505 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3506 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3508 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3509 host is already defined.
3510 ** RENAME-FILE works on streams instead of signalling an internal
3512 ** PEEK-CHAR uses the current readtable when determining whether
3513 or not a character is whitespace.
3514 ** MERGE-PATHNAMES handles the case when the pathname does not
3515 specify a name while the default-pathname specifies a version.
3516 ** Pathnames now stand a better chance of respecting print/read
3518 ** Attempting to use standardized file system operators with a
3519 pathname with invalid :DIRECTORY components signals a
3521 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3523 ** DIRECTORY on logical pathnames is more correct.
3524 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3525 signal a TYPE-ERROR if their argument is not a stream.
3526 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3527 designator argument does not designate a stream.
3528 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3529 examining the synonym.
3530 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3532 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3533 element-type larger than ([UN]SIGNED-BYTE 32).
3535 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3536 * When built with the :SB-FUTEX feature, threaded builds now take
3537 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3538 for faster/more reliable mutex and condition variable support.
3539 * Incompatible change (but one you probably shouldn't have been using
3540 anyway): the interface and code for arbitrating between multiple
3541 threads in the same user session has been redesigned.
3542 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3543 error when called without an explicit environment argument.
3544 (thanks to Nikodemus Siivola)
3545 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3546 confused about their position. (thanks to Adam Warner and Gerd
3548 * bug fix: Pretty printing backquoted forms with unquotations in the
3549 argument list position of various code constructs such as LAMBDA
3550 now works correctly. (reported by Paul Dietz)
3551 * bug fix: Pretty printing unquotations no longer loses all
3552 stream position information.
3553 * optimization: performance of string output streams is now less
3554 poor for multiple small sequence writes.
3555 * optimization: performance of CSUBTYPEP in the presence of complex
3556 expressions involving CONS and NOT many times has been improved.
3557 (reported by Paul Dietz)
3558 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3560 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3561 streams for the REPL, for the debugger, and so on. (thanks to
3563 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3564 * fixed some bugs revealed by Paul Dietz' test suite:
3565 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3566 is ignored if it is too small, rather than propagating through
3567 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3568 ** extremely complex negations of CONS types were not being
3569 sufficiently canonicalized, leading to inconsistencies in
3571 ** VALUES tranformer lost derived type.
3573 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3574 * fixed a bootstrapping bug: the build process no longer assumes
3575 that the various BOOLE-related constants have the same value in
3576 host and target lisps. (noted by Paul Dietz' test suite on an
3577 SBCL binary built from CLISP)
3578 * The system can now be dynamically linked on the MIPS platform,
3579 which enables dynamic loading of foreign code from Lisp. (thanks
3580 to Ralf Baechle for discussions on the MIPS ABI)
3581 * The system now records debugging information for its own source
3582 files in a filesystem-position-independent manner, relative to
3583 the "SYS" logical host.
3584 * fixed a compiler bug: MV-LET convertion did not check references
3585 to the "max args" entry point. (reported by Brian Downing)
3586 * tweaked disassembly notes to be less confident about proclaiming
3587 some instruction as an LRA. (thanks to Brian Downing)
3588 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3589 now each have their own history, command character, and other
3590 characteristics. (thanks to David Lichteblau)
3591 * fixed some bugs revealed by Paul Dietz' test suite:
3592 ** compiler failure in compiling LOGAND expressions including a
3594 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3595 shift greater than 32.
3596 ** FLUSH-DEST did not mark blocks for type check regeneration.
3597 ** HANDLER-CASE failed to accept declarations in handler clauses
3598 in some circumstances.
3600 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3601 * New code in contrib/sb-introspect (still probably not entirely
3602 stable yet) provides some support for smart Lisp development
3603 environments like SLIME.
3604 * The conditions signalled for errors occurring when loading .fasl
3605 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3606 in a way which should help ASDF recover gracefully.
3607 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3608 stuff has been cleaned up. If you code contrib/ stuff, this might
3609 affect you, and you can look at contrib/README, contrib/STANDARDS,
3610 and/or the 0.8.4.27 diff to check.
3611 * In full calls the compiler now does not generate checks for declared
3612 argument types for all arguments.
3613 * various threading fixes
3614 ** and some experimental patches which didn't make it into
3615 the main tree for this release, but which are shipped in
3616 contrib/experimental-thread.patch as a possible fix for some
3617 failures (deadlock, spinning...) in GC-intensive multithreaded
3619 * fixed PPC build problem (source code incompatibility of different
3620 library versions): added offsetof() hackery which attempts to divine
3621 where glibc maintainers put uc_mcontext today
3622 * fixed bug 282: compiler does not trust type assertions while passing
3623 arguments to a full call.
3624 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3625 &OPTIONAL VALUES type parameter.
3626 * fix bug 214: algorithm for noting rejected templates is now more
3627 similar to that of template seletion. (also reported by rydis on
3629 * fixed bug 141b: printing backquoted information readably and prettily
3630 inserts a space where necessary.
3631 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3632 (CHARACTER 10) are now reported as errors, rather than propagated
3633 as unknown types. (reported by piso on #lisp)
3634 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3635 with values NIL and :ERROR. (thanks to Milan Zamazal)
3636 * fixed bug 191c: CLOS now does proper keyword argument checking as
3637 described in CLHS 7.6.5 and 7.6.5.1.
3638 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3639 longer raise an error; further, using a list as a for-as-arithmetic
3640 counter now raises a meaningful error.
3641 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3642 now understood by sequence creation functions such as MAKE-SEQUENCE
3644 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3645 a STRING-INPUT-STREAM.
3646 * compiler enhancement: SIGNUM is now better able to derive the type
3648 * type declarations inside WITH-SLOTS are checked. (reported by
3650 * fixed some bugs revealed by Paul Dietz' test suite:
3651 ** incorrect optimization of TRUNCATE for a positive first
3652 argument and negative second.
3653 ** compiler failure in let-convertion during flushing dead code.
3654 ** compiler failure while deriving type of TRUNCATE on an
3655 interval, containing 0.
3656 ** ASH of a negative bignum by a negative bignum count now returns
3658 ** intersection of CONS types now canonicalizes properly, fixing
3659 inconsistencies in SUBTYPEP.
3661 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3662 * incompatible change: The --disable-debugger command line
3663 option now clobbers the debugger at a more fundamental
3664 level, by redefining #'INVOKE-DEBUGGER instead of by
3665 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3666 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3667 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3668 enter the debugger REPL and then suffer recursive errors
3669 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3670 while under the new system, BREAK in --disable-debugger mode
3671 terminates the system just as an unhandled error would.
3672 * fixed compiler performance when processing loops with a step >1;
3673 * bug fix: DOCUMENTATION now retrieves generic function
3674 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3675 support has been systematized, and now supports the methods
3676 specified by ANSI, along with a default method and a method for
3677 slot documentation. (reported by Nathan Froyd)
3678 * bug fix: effective methods associated with a generic function are
3679 no longer cached over a change of that generic function's method
3680 combination. (reported by Andreas Fuchs)
3681 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3682 names a non-existent directory. (thanks to Andreas Fuchs)
3683 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3684 the PPC platform, lead to stack corruption; this has been fixed.
3685 (reported by Rainer Joswig)
3686 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3687 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3688 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3689 arithmetic in general, is now much more reliable on the PPC
3691 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3692 platform now returns the right answer.
3693 * optimization: restored some effective method precomputation in
3694 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3695 precomputation is now tunable.
3696 * optimization: compiler-internal data structure use has been
3697 reviewed, and changes have been made that should improve the
3698 performance of the compiler by about 20%.
3699 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3700 simple-base-strings and simple-bit-vectors is improved.
3701 * optimization: the optimization of 32-bit logical and arithmetic
3702 functions introduced in version 0.8.3 on the x86 has been
3703 implemented on the mips, ppc and sparc platforms; an
3704 implementation of the same facility, but for 64-bit arithmetic,
3705 has been added for the alpha.
3706 * microoptimization: the compiler is better able to make use of the
3707 x86 LEA instruction for multiplication by constants.
3708 * bug fix: in some situations compiler did not report usage of
3709 generic arithmetic in (SPEED 3) policy.
3710 * bug 145b fix: compiler used wrong type specifier while converting
3711 MEMBER-types to numeric.
3712 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3714 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3715 index argument now works properly on the Alpha platform.
3716 * bug fix: floating point exception treatment on the Alpha platform
3718 * bug fix: FILE-POSITION works much better on string input and
3719 output streams. (thanks to Nikodemus Siivola)
3720 * bug fix: many threading/garbage collection symptoms sorted.
3721 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3722 might be pseudo-atomic.
3723 * internal change: Stopping for GC is now done with signals not
3724 ptrace. GC is now done in whichever thread wanted it, instead of
3726 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3728 * bug fix: result form in DO is not contained in the implicit
3730 * incompatible change: ICR structure is changed; the value part of
3731 CONTINUATION is now called LVAR; corresponding functions are
3732 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3733 * added type deriver for ISQRT (thanks to Robert E. Brown).
3734 * bug fix: better support for loading from the command line when an
3735 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3737 * fixed some bugs revealed by Paul Dietz' test suite:
3738 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3739 ** ROUND and FROUND now give the right answer when given very
3740 small float arguments.
3741 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3743 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3744 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3745 ** LCM should return a non-negative integer.
3746 ** PARSE-INTEGER returned the index of a terminator instead of the
3747 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3748 ** PARSE-INTEGER returned an incorrect index being applied to a
3750 ** LCM with two arguments of 0 returns 0 rather than signalling
3752 ** unsigned addition of a 32-bit constant with the high bit set no
3753 longer causes an internal compiler error on the x86.
3754 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3755 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3756 with negative last argument.
3757 ** byte specifiers with zero size and position no longer cause
3758 an error during type derivation.
3759 ** bignum multiplication on the Alpha platform now returns the
3761 * porting: The system now builds on SuSE AMD64, although it still
3762 generates a 32-bit binary.
3763 * .fasl file incompatibility: The fasl file version number has
3764 been incremented (because of the changes to internal compiler
3765 data structures referred to above).
3767 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3768 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3769 more accurately, on the Darwin kernel running on PowerPC hardware.
3770 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3771 * Compiler code deletion notes now signal a condition of type
3772 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3773 an associated MUFFLE-WARNING restart.
3774 * The compiler now performs limited argument count validation of
3775 constant format strings in FORMAT, and where appropriate in ERROR,
3776 CERROR and WARN. (thanks to Gerd Moellmann)
3777 * New ASDF-INSTALL contrib can be used for automatic download and
3778 installation of third-party Lisp code from CCLAN or other sites
3780 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3781 which forces another thread to execute a function supplied by the
3783 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3784 now accept and act upon their :ELEMENT-TYPE keyword argument.
3785 (reported by Martin Atzmueller, Edi Weitz)
3786 * bug fix: FILE-POSITION now accepts position designators up to
3787 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3788 is the greater. (thanks to Patrik Nordebo)
3789 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3790 Kalle Olavi Niemitalo)
3791 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3792 printable. (reported by Eric Marsden)
3793 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3794 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3795 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3796 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3797 (thanks to Stig Sandoe)
3798 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3799 UNREAD-CHAR now correctly includes the unread character in the
3800 target sequence. (thanks to Gerd Moellmann)
3801 * bug fix in threaded builds: the system can now be suspended and
3802 resumed by shell job control with minimal disruption.
3803 * bug fixes in times and timezones >2038AD
3804 * better handling of "where is GNU make?" problem in build scripts
3805 (thanks to Nikodemus Siivola)
3806 * new optimization: inside a named function any reference to a
3807 function with the same name is considered to be a self-reference;
3808 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3809 optimization quality.
3810 * new optimization on x86: logical functions and + now have
3811 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3812 used when the result is truncated to 32 bits.
3813 * VALUES declaration is partially enabled.
3814 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3815 * fixed some bugs revealed by Paul Dietz' test suite:
3816 ** The system now obeys the constraint imposed by
3817 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3818 types form a lattice under type intersection.
3819 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3820 ** ASSOC now ignores NIL elements in an alist.
3821 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3822 and (1+ MOST-POSITIVE-FIXNUM) answers.
3823 ** The addition of a method with invalid qualifiers to a generic
3824 function does not cause an error to be signalled immediately;
3825 a warning is signalled, and the error is generated only on
3826 calling the generic function.
3827 * changed .fasl file version number, in part to add type codes for
3828 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3829 obscure ANSI requirements
3831 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3832 * fixed bug 148: failure to inline-expand a local function left
3833 garbage, confusing the compiler.
3834 * fixed bugs 3cd: structure slot readers perform type check if the
3835 slot can have an invalid value (i.e. it is either not initialized
3836 or can be written with a less specific slot writer).
3837 * bug fix: the compiler now traps array references to elements off
3838 the end of an array; previously, the bounds checking in some
3839 circumstances could go off-by-one.
3840 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3842 * type declarations for array element types now obey the description
3843 on the CLHS page "Declaration TYPE", as per discussions on
3844 sbcl-help around 2003-05-08. This means that a declaration
3845 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3846 declaration, all references to BAR will be asserted or assumed
3847 (with THE, so dependent on compiler policy) to involve objects of
3848 type FOO. Note that no such declaration is implied in
3849 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3850 * declared types of functions from the "Conditions"
3851 chapter. (reported by Paul Dietz)
3852 * bug fix: CERROR accepts a function as its first argument.
3853 * bug fix: NTH an NTHCDR accept a bignum as index
3854 arguments. (reported by Adam Warner)
3855 * optimization: character compare routines now optimize comparing
3856 against a constant character. (reported by Gilbert Baumann)
3857 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3858 argument now works properly on the MIPS platform.
3859 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3860 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3861 declared to have a functional type, does not cause an error
3863 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3864 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3865 * fixed bug: if last continuation of a deleted block has a
3866 destination, this destination should be deleted too. (reported by
3868 * fixed a bug in the bootstrap process: the host compiler's values
3869 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3870 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3871 test case from Patrik Nordebo)
3872 * improved the ability of the disassembler on the PPC platform to
3873 provide helpful disassembly notes.
3874 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3875 the class in more cases than previously.
3876 * bug fix: FILE-POSITION now understands :START and :END for
3877 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3878 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3879 8) data. (thanks to David Lichteblau)
3880 * bug fix: it is possible to add a method to a generic function
3881 without lambda list.
3882 * bug fix: reader failed to signal END-OF-FILE inside an
3883 object representation. (reported by Nikodemus Siivola)
3884 * fixed some bugs revealed by Paul Dietz' test suite:
3885 ** LAST and [N]BUTLAST should accept a bignum.
3886 ** condition slot accessors are methods.
3887 ** (VECTOR NIL) is a subtype of STRING.
3889 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3890 * minor incompatible change: some nonsensical specialized lambda
3891 lists (used in DEFMETHOD) which were previously ignored now signal
3893 * minor incompatible change: the system is now aware of the types of
3894 variables in the COMMON-LISP package, and will signal errors for
3895 most violations of these type constraints (where previously they
3896 were silently accepted).
3897 * minor incompatible change: COMPILE-FILE now uses the freedom
3898 afforded (ANSI 3.2.2.3) to use derived function types for
3899 functions defined in the same file. This also permits the system
3900 to warn on static type mismatches and function
3901 redefinition. (Currently it does not work with high DEBUG level.)
3902 * minor incompatible change: VALUES declaration is disabled.
3903 * When issuing notes, the compiler now signals a condition of type
3904 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3905 restart for use in user handlers. It is expected that the
3906 COMPILER-NOTE condition will eventually become a condition
3907 supertype to a hierarchy of note types, which will then be
3908 handleable in a similar fashion. However, at the moment, no such
3909 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3910 but it's an implementation detail, not a classification for the
3912 * Changes in type checking closed the following bugs:
3913 ** type checking of unused values (192b, 194d, 203);
3914 ** template selection based on unsafe type assertions (192c, 236);
3915 ** type checking in branches (194bc).
3916 * A short form of VALUES type specifier has ANSI meaning (it has
3917 increased the number of situations when SBCL cannot perform type
3919 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3920 keywords or constants is permissible.
3921 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3922 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3923 classes. (thanks to Antonio Martinez)
3924 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3925 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3926 argument to a pretty-print stream. Instead, it leaves any such
3927 operations to DESCRIBE-OBJECT methods.
3928 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3930 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3931 lambda lists. (thanks to David Lichteblau)
3932 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3933 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3934 (thanks to Gerd Moellmann)
3935 * fixed bug 246: increased compilation speed of long
3936 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3938 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3940 * DEFCONSTANT now throws a condition of type
3941 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3942 constant to a non-EQL value; CONTINUE and ABORT restarts
3943 respectively change and preserve the value.
3944 * fixed bug 63: The code walker, part of the implementation of CLOS,
3945 is now better at handling symbol macros.
3946 * bug fix: There is no longer an internal implementation type named
3947 CL:LENGTH. (reported by Raymond Toy)
3948 * bug fix: In macro-like defining macros/special operators the
3949 implicit block does not enclose the lambda list.
3950 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3951 enclosed in parentheses) are not suitable as type specifiers, and
3952 their use properly signals an error now.
3953 * bug fix: An argument count mismatch for a type specifier in code
3954 being compiled no longer causes an unhandled error at compile
3955 time, but signals a compile-time warning.
3956 * fixed simple vector readable printing
3957 * bug fix: DESCRIBE takes more care over whether the class
3958 precedence list slot of a class is bound before accessing it.
3959 (reported by Markus Krummenacker)
3960 * bug fix: FORMATTER can successfully compile pretty-printer format
3961 strings which use variants of the ~* directive inside.
3962 * bug fix: SEARCH now applies its TEST predicate to the elements of
3963 the arguments in the correct order. (thanks to Wolfhard Buss)
3964 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3965 in type inference. (thanks to Robert E. Brown)
3966 * bug fix: Reading in symbols with an explicit package name of ""
3967 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3968 * fixed some bugs revealed by Paul Dietz' test suite:
3969 ** NIL is now allowed as a structure slot name.
3970 ** Arbitrary numbers, not just REALs, are allowed in certain
3971 circumstances in LOOP for-as-arithmetic clauses.
3972 ** Multiple class redefinitions before slot access no longer
3973 causes a type error.
3974 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3975 association between the name and a class.
3976 ** Generic functions with non-standard method-combination and over
3977 five methods all of which return constants no longer return NIL
3978 after the first few invocations. (thanks to Gerd Moellmann)
3979 ** CALL-NEXT-METHOD with no arguments now passes the original
3980 values of the arguments, even in the presence of assignment.
3981 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3983 ** DISASSEMBLE works with closures and funcallable instances.
3984 ** ADD-METHOD now returns the generic function, not the new method.
3985 ** FIND-METHOD signals an error if the lengths of the specializers
3986 is incompatible with the generic function, even if the ERRORP
3988 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3989 which its argument is a member.
3990 ** DEFCLASS only redefines the class named by its class-name
3991 argument if that name is the proper name of the class;
3992 otherwise, it creates a new class.
3993 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3994 of the UNBOUND-SLOT condition to the name of the slot.
3995 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3996 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3997 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3998 SLOT-MAKUNBOUND in the specified fashion.
4000 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4001 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4002 cross-compilation host. As a consequence, we can now bootstrap our
4003 way up to SBCL starting with a bare gcc toolchain and human-readable
4004 source code (first the source to CLISP, then the source to SBCL).
4005 * A contributed module containing a partial implementation of the
4006 simple-streams interface has been included. (thanks to Rudi
4008 * A contributed module implementing the RFC1321 Message Digest
4009 Algorithm, known as MD5, has been included.
4010 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4011 no longer has any effect, as the code controlled by this feature
4012 has been deleted. (As far as we know, no-one has ever built using
4013 this feature, and its semantics were confused in any case).
4014 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4015 work on conditions (as required by the ANSI specification),
4016 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4017 expected behaviour on conditions. Users should note, however,
4018 that such behaviour is not required by the ANSI specification,
4019 and so use of this behaviour may render their code unportable.
4020 * fixed some bugs revealed by Paul Dietz' test suite:
4021 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4023 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4024 ** SXHASH on condition objects no longer returns NIL.
4025 ** :ALLOCATION :CLASS slots are better treated; their values are
4026 updated on class redefinition, and initforms inherited from
4027 superclasses are applied.
4028 ** REMOVE-METHOD returns its generic function argument even when
4029 no method was removed.
4030 ** SHARED-INITIALIZE now initializes the values of the requested
4031 slots, including those with :ALLOCATION :CLASS.
4032 ** ALLOCATE-INSTANCE now works on structure classes defined via
4033 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4035 ** SLOT-EXISTS-P now works on conditions, as well as structures
4037 ** MAKE-LOAD-FORM now has the required methods on
4038 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4039 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4040 keyword, and now implements the SLOT-NAMES argument.
4041 ** methods with &OPTIONAL arguments no longer allow too many
4042 arguments to be passed in the call without error.
4043 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4044 option is consistent with the required arguments of the generic
4045 function lambda list.
4046 * bug fix: REQUIRE accepts a string designator. (Thanks to
4048 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4049 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4050 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4051 * bug fix: The compiler now checks for duplicated variables in macro
4053 * bug fix: SETQ on globals returns the correct value.
4054 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4055 not a COMPILER-ERROR (followed by some other strange error on
4056 choosing the CONTINUE restart).
4057 * bug fix: make.sh and friends are now more consistent in the way that
4058 they look for GNU "make".
4060 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4061 * experimental native threads support (on x86 Linux >=2.4 only).
4062 This is not compiled in by default: you need to add :SB-THREAD to
4063 the target features. See the "Beyond ANSI" chapter of the manual
4065 * fix for longstanding nonANSIism: The old distinction between
4066 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4067 The return value from CL:FIND-CLASS is now a CLOS class, and
4068 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4069 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4070 * An interface to the MetaObject Protocol, as described in Kiczales,
4071 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4072 MIT Press, 1991, is available from the SB-MOP package.
4073 * incompatible change: the SB-PCL package should now be considered
4074 a private implementation detail, and no longer a semi-private MOP
4076 * minor incompatible change: due to rearrangement for threads, the
4077 control stack and binding stack are now allocated at arbitrary
4078 addresses instead of being hardcoded per-port. Users affected by
4079 this probably have to be doing advanced things with shared
4080 libraries, and will know who they are.
4081 * minor incompatible change: Previously, all --eval forms used were
4082 processed with READ before any of them were processed with EVAL.
4083 Now each --eval form is processed with both READ and EVAL before
4084 the next --eval form is processed. (Thus package operations like
4085 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4086 work as the user might reasonably expect.)
4087 * minor incompatible change: *STANDARD-INPUT* is now only an
4088 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4090 * minor incompatible change: Y-OR-N-P is now character-oriented,
4091 not line oriented. Also, YES-OR-NO-P now works without errors.
4092 (thanks to Antonio Martinez)
4093 * sb-aclrepl module improvements: an integrated inspector, added
4094 repl features, and a bug fix to :trace command.
4095 * Known functions, which cannot be open coded by the backend, are
4096 considered to be able to check types of their arguments. (fixing
4097 a bug report by Nathan J. Froyd)
4098 * fixed a bug in computing method discriminating functions: It is
4099 now possible to define methods specialized on classes which have
4100 forward-referenced superclasses. (thanks to Gerd Moellmann)
4101 * fixed evaluation order in optional entries (reported by Gilbert
4103 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4104 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4105 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4106 required-by-AMOP NAME argument, as well as CLASS and
4107 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4108 * fixed bug 20: DEFMETHOD can define methods using names that are
4109 not the proper names of classes to designate class specializers.
4110 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4111 Unix file descriptors, instead of blowing up. (thanks to Antonio
4113 * Garbage collection refactoring: user-visible change is that a
4114 call to the GC function during WITHOUT-GCING will not do garbage
4115 collection until the end of the WITHOUT-GCING. If you were doing
4116 this you were probably losing anyway.
4117 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4118 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4119 TYPEP the latter but not the former.
4120 * The compiler issues a full WARNING for calls to undefined functions
4121 with names from the CL package.
4122 * MAP-INTO for a vector destination is open coded. (reported by
4123 Brian Downing on c.l.l)
4124 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4125 documentation string.
4126 * fixed some bugs revealed by Paul Dietz' test suite:
4127 ** COPY-ALIST now signals an error if its argument is a dotted
4129 ** Condition slots are now accessed more correctly in the presence
4130 of multiple initargs for a given slot.
4131 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4132 exclude restarts of the same name associated with a different
4134 ** DEFCLASS of forward-referenced classes with another
4135 forward-referenced class in the superclasses list no longer
4137 ** Condition slots are now initialized once each, not multiple
4138 times. (thanks to Gerd Moellmann)
4139 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4141 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4142 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4143 arguments contain duplicated elements.
4144 ** RESTART-CASE understands local macros.
4145 ** RESTART-CASE associates exactly its own restarts with a condition.
4146 ** ENDP in safe mode checks its argument to be of type LIST.
4147 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4148 in question is unbound.
4149 ** Optimized MAKE-INSTANCE functions no longer cause internal
4150 assertion failures in the presence of duplicate initargs.
4151 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4152 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4153 propagated even in the ctor optimized implementation of
4155 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4157 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4158 * a better implementation of SXHASH on (simple) bit vectors,
4159 measured both in execution speed and in distribution of results
4160 over the positive fixnums, has been installed. Likewise, a better
4161 implementation of EQUAL for simple bit vectors is now available.
4162 * fixed CEILING optimization for a divisor of form 2^k.
4163 * fixed bug 240 (emitting extra style warnings "using the lexical
4164 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4165 by Antonio Martinez)
4166 * fixed SXHASH, giving different results for NIL depending on type
4167 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4168 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4169 variable. (found by Rolf Wester)
4170 * SBCL does not ignore type declarations for special
4171 variables. (reported by rif on c.l.l 2003-03-05)
4172 * some bug fixes in contrib/sb-aclrepl/
4173 * fixed some bugs revealed by Paul Dietz' test suite:
4174 ** a bug in the CONS type specifier, whereby the CAR and CDR
4175 types got intertwined, has been fixed;
4176 ** the type system is now able to reason about the interaction
4177 between INTEGER and RATIO types more completely;
4178 ** APPEND, [N]REVERSE and NRECONC check that those their
4179 arguments, which must be proper lists, are really so;
4180 ** An array specialized to be unable to hold elements has been
4181 implemented, as required -- yes, really -- by ANSI;
4182 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4183 on malformed property lists;
4185 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4186 * incompatible packaging change: in line with Unix convention,
4187 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4188 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4189 * REQUIRE and PROVIDE are now optionally capable of doing something
4190 useful. See the documentation string for REQUIRE.
4191 * infrastructure for a managed SBCL contrib system: contributed
4192 modules in this release include:
4193 ** the ASDF system definition facility;
4194 ** an interface to the BSD Sockets API;
4195 ** an ACL-like convenience interface to the repl;
4196 (thanks to Kevin Rosenberg)
4197 ** an implementation of ROTATE-BYTE, with efficient implementation
4199 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4200 gives a closer approximation to the right answer than previously.
4201 (thanks to Raymond Toy)
4202 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4203 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4204 optional environment arguments, as required by ANSI.
4205 * fixed bugs in other functions taking environment objects, allowing
4206 calls with an explicit NIL environment argument to be compiled
4208 * fixed bug 228: primary return values from
4209 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4210 COMPILE or FUNCTION.
4211 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4212 :TYPE will no longer signal errors on innocuous objects.
4213 * fixed bug 231b: SETQ is better at respecting type declarations in
4214 the lexical environment.
4215 * fixed a bug in DEFCLASS: classes named by symbols with no or
4216 unprintable packages can now be defined.
4217 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4218 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4219 * fixed compiler failure related to checking types of functions.
4220 (reported by Robert E. Brown)
4221 * the compiler is now much more consistent in its error-checking
4222 treatment of bounding index arguments to sequence functions: in
4223 (SAFETY 3) code, errors will be signalled in almost all cases if
4224 invalid sequence bounding indices are passed to functions defined
4225 by ANSI to operate on sequences.
4226 * fixed a bug in the build procedure: documentation of SBCL-specific
4227 packages is now preserved and available in the final Lisp image.
4228 * lifted FDEFINITION lookup out of loops in the implementation of
4229 many list operations. (thanks to Robert E. Brown)
4230 * fixed a bug in the reader: the #n# reader macro now works for
4231 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4232 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4233 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4234 E. Brown and Tony Martinez respectively)
4235 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4236 SLOT-BOUNDP: in particular, it is now able to optimize them much
4237 better, and is now not vulnerable to having packages renamed.
4238 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4239 always called when a slot is not present in an instance. (thanks
4241 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4242 longer signal an error on unreading a character following EOF on
4243 the previous constituent stream. (thanks to Tony Martinez)
4244 * fixed some bugs revealed by Paul Dietz' test suite:
4245 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4246 not just nonnegative fixnums;
4247 ** the logical bit-array operators such as BIT-AND now accept an
4248 explicit NIL for their "opt-arg" argument (to indicate a
4249 freshly-consed result bit-array);
4250 ** ELT now signals an error on an invalid sequence index in safe
4252 ** the type system is now cleverer about negations of numeric
4253 types, and consequently understands the BIGNUM and RATIO types
4255 ** the type system is now cleverer about the interaction between
4256 INTEGER and RATIO types: while bugs still remain, many more
4257 cases are accurately computed;
4258 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4259 if it is in the last clause;
4260 ** CONSTANTLY now correctly returns a side-effect-free function in
4262 ** DECLARE is no longer treated as a special-operator; in
4263 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4264 * incremented fasl file version number due to the change in the
4265 DEFSTRUCT-SLOT-DESCRIPTION structure.
4267 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4268 * minor incompatible change: code processed by the "interpreter" or
4269 EVAL now has a compilation optimization policy of (DEBUG 2)
4270 (changed from (DEBUG 1)) to improve debuggability of interactive
4271 development, and to allow the use of the debug RETURN command in
4273 * an experimental implementation of the RETURN command for the
4274 debugger has been included. (thanks to Frederik Kuivinen)
4275 * fixed bug 62: constraints were not propagated into a loop.
4276 * fixed bug in embedded calls of SORT (reported and investigated by
4278 * fixed some bugs revealed by Paul Dietz' test suite:
4279 ** printing and reading of arrays with some dimensions having
4280 length 0 (thanks to Gerd Moellmann);
4281 ** BOA constructor with &AUX argument without a default value does
4282 not cause a type error;
4283 ** CONSTANTP now returns true for all self-evaluating objects.
4285 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4286 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4287 accessors that are related by inheritance, as specified in the
4288 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4289 Valtteri Vuorikoski)
4290 * The compiler is now able to inline functions that were defined in
4291 a complex lexical environment (e.g. inside a MACROLET).
4292 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4294 * Support for the upcoming FreeBSD-5.0 release has been included.
4295 (thanks to Dag-Erling Smorgrav)
4296 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4297 effect when it is not in a toplevel context.
4298 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4299 stand a better chance of being correct. (thanks to Gerd
4301 * fixed bug in COERCE, which now signals an error on coercing a
4302 rational to a bounded real type which excludes the expected
4304 * The compiler is now able to derive types more accurately from the
4305 COERCE and COMPILE functions.
4306 * fixed bug 223: functional binding is considered to be constant
4307 only for symbols in the CL package.
4308 * fixed bug 231: SETQ did not check the type of a variable being set
4309 (reported by Robert E. Brown)
4310 * A new optimization for MAKE-INSTANCE has been included, fixing
4311 various bugs (including relating to :ALLOCATION :CLASS slots and
4312 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4314 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4315 ** As required by ANSI, LOOP now disallows anonymous collection
4316 clauses such as COLLECT I in conjunction with aggregate boolean
4317 clauses such as THEREIS (= I 1);
4318 ** LOOP now signals an error when any variable is reused in the
4319 same loop (including the potentially useful construct analogous
4320 to WITH A = 1 WITH A = (1+ A);
4321 ** IT is only a special loop symbol within the first clause of a
4322 conditional loop clause;
4323 ** LOOP with a typed iteration variable over a hashtable now
4324 signals a type error iff it should.
4325 * fixed some other bugs revealed by Paul Dietz' test suite:
4326 ** FILE-STREAM now names the class previously known as FD-STREAM;
4327 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4328 argument) no longer signals an error;
4329 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4330 of the slot symbol, rather than using the current package
4331 ((:CONC-NAME "") continues to intern the slot's name in the
4333 * incremented fasl file version number, because of the incompatible
4334 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4335 of the new implementation of DEFINE-COMPILER-MACRO.
4337 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4338 * Support for building SBCL for MIPS platforms running in
4339 little-endian mode has now been checked in, and basic
4340 functionality on said platforms verified.
4341 * minor incompatible change: PCL now records the pathname of a file
4342 in which methods and the like are defined, rather than its
4344 * minor incompatible change: TRUENAME now considers the truename of
4345 a file naming a directory to be the pathname with :DIRECTORY
4346 component indicating that directory.
4347 * minor incompatible change: a NAMED clause in the extended form of
4348 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4349 reason for the previous behaviour is unclear.
4350 * more systematization and improvement of CLOS and MOP conformance
4351 in PCL (thanks to Gerd Moellman and Pierre Mai):
4352 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4354 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4355 primary methods with no specializers;
4356 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4358 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4359 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4360 FORWARD-REFERENCED-CLASSes; error reporting on
4361 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4363 ** SXHASH on CLOS instances now uses a slot internal to the
4364 instance to return different numbers on distinct instances,
4365 while preserving the same return value through invocations of
4367 ** DEFMETHOD signals errors when methods with longer incongruent
4368 lambda lists are added to generic functions;
4369 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4370 CLASS, as specified in AMOP;
4371 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4372 on the order returned by the primary method for classes of
4373 class STANDARD-CLASS;
4374 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4375 * fixed some bugs shown by Paul Dietz' test suite:
4376 ** DOLIST puts its body in TAGBODY;
4377 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4379 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4380 value producing form;
4381 ** if more variables are given to PROGV than values, extra
4382 variables are bound and made to have no value;
4383 ** NSUBSTITUTE on list arguments gets the right answer with
4385 ** ELT signals an error of type TYPE-ERROR when the index argument
4386 is not a valid sequence index;
4387 ** LOOP signals (at macroexpansion time) an error of type
4388 PROGRAM-ERROR when duplicate variable names are found;
4389 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4390 ** FUNCALL of special-operators now cause an error of type
4392 ** PSETQ now works as required in the presence of side-effecting
4393 symbol-macro places;
4394 ** NCONC accepts any object as its last argument;
4395 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4397 ** loop-for-as-package does not require a package to be explicitely
4399 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4401 * fixed bug 166: compiler preserves "there is a way to go"
4402 invariant when deleting code.
4403 * fixed bug 172: macro lambda lists with required arguments after
4404 &REST arguments now cause an error to be signalled. (thanks to
4406 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4407 bug. (thanks to Matthew Danish)
4408 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4410 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4411 arguments are lexically rebound. (thanks to Gerd Moellmann and
4413 * fixed bug 194: error messages are now more informative when there
4414 is no primary method applicable in a call to a generic
4415 function. (thanks to Gerd Moellmann)
4416 * fixed bug in command line argument checking (thanks to Julian
4418 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4419 (thanks to Matthew Danish)
4420 * incremented fasl file version number, because of the
4421 SXHASH-related changes in the layout of CLOS data structures
4423 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4424 * minor incompatible change: The runtime (the Unix executable named
4425 "sbcl") is now much pickier about the .core files it will load.
4426 Essentially it now requires .core files to descend from the same
4427 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4428 as the runtime does. (The intent is to prevent the crashes which
4429 can occur, and which can even be reported as mysterious failures,
4430 when people patch the sources or change the build parameters
4431 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4432 sbcl and .core files.)
4433 * fixed bug: VALUES-LIST is no longer optimized away.
4434 * fixed bug 142: The FFI conversion of C string values to Lisp
4435 string values no longer conses excessively. (thanks to Nathan
4436 Froyd porting Raymond Toy's fix to CMU CL)
4437 * began to systematize and improve MOP conformance in PCL (thanks to
4438 Nathan Froyd, Gerd Moellman and Pierre Mai):
4439 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4441 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4442 ** FINALIZE-INHERITANCE is now called on class finalization;
4443 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4444 argument precedence order.
4445 * fixed bug 202: The compiler no longer fails on functions whose
4446 derived types contradict their declared type.
4447 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4448 so it can be non-toplevel.
4449 * The fasl file version number has changed (because of the new
4450 implementation of DEFMACRO).
4451 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4452 safe code, that any length requirement by their type-specifier
4453 argument is valid. The exceptions to this are described in bug
4455 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4456 functions now check the types of their inputs as required by ANSI.
4457 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4458 introduced symbol is DECLAREd to be SPECIAL.
4459 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4460 * fixed bug: :COUNT argument to sequence functions may be negative
4461 * fixed bug: body of DO-SYMBOLS may contain declarations
4462 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4463 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4464 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4465 symbol macro only once
4466 * fixed printing of call frame when argument list is unavailable
4467 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4468 * compiler no longer signals WARNING on unknown keyword
4471 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4472 * A beta-quality port to the mips architecture running Linux,
4473 based on the old CMUCL backend, has been made. It has been tested
4474 on a big-endian kernel, and works sufficiently well to be able to
4475 rebuild itself; it has not been tested in little-endian mode.
4476 * fixed an inconsistency between gencgc.c and purify.c which made
4477 dumping/loading .core files unreliable
4478 * fixed bug 120a: The compiler now deals correctly with IFs where
4479 the consequent is the same as the alternative, instead of
4480 misderiving the return type. (thanks to Alexey Dejneka)
4481 * fixed bug 113: Logical pathnames are now dumpable (the logical
4482 host is resolved at load-time, throwing an error if it is not
4484 * fixed bug 174: FORMAT's error message is slightly clearer when a
4485 non-printing character is used in a format directive.
4486 * fixed several bugs in compiler checking of type declarations, i.e.
4487 violations of the Python "declarations are assertions" principle
4488 (thanks to Alexey Dejneka)
4489 * fixed several bugs in PCL's error checking (thanks to Gerd
4491 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4493 * fixed bug in compilation of functions as first class values
4494 (thanks to Antonio Martinez-Shotton)
4495 * The compiler's handling TYPE-ERRORs which it can prove will
4496 inevitably happen at runtime has been cleaned up and corrected
4497 in several ways. (thanks to Alexey Dejneka)
4498 * improved argument type checking for various basic arithmetic
4499 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4500 lavished on them in the past that they can be compiled in many
4501 ways in different special cases
4502 * fixed bug 181: compiler checks validity of user supplied type
4504 * cleaned up code flushing in optimization: Function calls which
4505 should signal errors for safety purposes (e.g. which ANSI says
4506 should signal errors when their arguments are of incorrect type)
4507 are no longer optimized away.
4508 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4509 * incremented fasl file version number, because changes in the
4510 implementation of sequence functions like COERCE caused
4511 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4512 in old inline expansions) to become undefined. (Actually these
4513 changes were later undone, so we might very well be binary
4514 compatible with 0.7.7 after all, but leaving the version number
4515 incremented seemed like the simplest and most conservative
4518 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4519 * An alpha-quality port to the parisc architecture running Linux,
4520 based on the old CMUCL backend, has been made. This, even more so
4521 than the other backends, should be considered still a work in
4522 progress; known problems include that the Linux kernel in 64-bit
4523 mode does not propagate the correct sigcontext structure to
4524 userspace, and consequently SBCL on a parisc64 kernel will not
4526 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4527 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4528 suppressed.) Also now that the compiler is looking at declarations
4529 in the environment, it checks optimization declarations as well,
4530 and suppresses inlining when (> DEBUG SPEED).
4531 * More fixes have been made to treatment of floating point exception
4532 treatment and other Unix signals. In particular, floating point
4533 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4534 * The detection and handling of control stack exhaustion (infinite
4535 or very deeply nested recursion) has changed. Stack exhaustion
4536 detection is now done by write-protecting pages at the OS level
4537 and applies at all optimization settings; when found, a
4538 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4539 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4540 be caught using IGNORE-ERRORS.
4541 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4542 correctly when transforming recursive LABELS functions to LETs.
4543 (thanks to Alexey Dejneka)
4544 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4545 that are names of constants or global variables.
4546 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4547 alien routines with docstrings.
4548 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4549 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4551 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4552 (thanks to Eric Marsden)
4553 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4554 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4555 * Bug fix: The SPARC backend can now compile functions involving
4556 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4557 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4558 to a functions expecting a PATHNAME-DESIGNATOR.
4559 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4560 lambda lists. (thanks to Alexey Dejneka)
4561 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4562 functions so that EXPORTing the name of the class doesn't cause
4563 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4564 to Antonio Martinez for reporting this)
4565 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4566 constant-folded without failing an assertion. (thanks to Einar
4567 Floystad Dorum for reporting this)
4568 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4569 types are now dealt with more correctly by the compiler.
4570 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4571 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4572 behaviour analogous to RENAME-FILE. This puts its behaviour more
4573 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4575 * The fasl file version number has changed again. (because of the
4576 bug fix involving the names of PCL MAKE-INSTANCE functions)
4578 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4579 * bug fix: Floating point exceptions are treated much more
4580 consistently on the x86/Linux and PPC/Linux platforms.
4581 * Array initialization with :INITIAL-ELEMENT is now much faster for
4582 cases when the compiler cannot open code the array creation, but
4583 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4584 array accesses have also seen a speed increase.
4585 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4586 specified. (This was at the root of some bad interactions between
4587 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4589 * bug fix: Internal error arguments for undefined functions are now
4590 computed correctly on the PPC/Linux platform.
4591 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4592 Raymond Toy's patch for CMU CL)
4593 * Support for the Solaris 9 operating environment has been included
4594 (thanks to Daniel Merritt)
4595 * A very ugly but hopefully complete draft of the missing FFI chapter
4596 of the manual has been created by reformatting the corresponding
4597 CMU CL manual chapter into (currently very ugly and incoherent)
4598 DocBook and bringing it up to date for SBCL behavior. Thus, the
4599 manual is now essentially complete, at least by my extreme
4600 once-and-only-once standards, whereby it's acceptable to refer to
4601 the doc strings of SB-EXT functions as the primary documentation.
4602 * The fasl file version number has changed again, due to cleanup of
4603 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4604 is no longer a static symbol.)
4606 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4607 * SBCL now builds with OpenMCL (version 0.12) as the
4608 cross-compilation host; also, more progress has been made toward
4609 bootstrapping under CLISP.
4610 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4612 * bug 158 fixed: The compiler can now deal with integer loop
4613 increments different from 1; fixing this turned out also to fix
4615 * bug 169 fixed: no more bogus warnings about using lexical bindings
4616 despite the presence of perfectly good SPECIAL declarations (thanks
4617 to David Lichteblau)
4618 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4619 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4620 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4622 * bug 180 fixed: Method combination specifications no longer ignore
4623 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4624 * bug fix: Structure type predicate functions now check their argument
4625 count as they should.
4626 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4627 correctly. (thanks to Pierre Mai)
4628 * minor incompatible change: The --noprogrammer option is deprecated
4629 in favor of the new --disable-debugger option, which is very similar.
4630 (The major difference is that it takes effect at a slightly different
4631 time at startup, causing handling of errors in --sysinit and
4632 --userinit files will be affected differently.) The
4633 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4634 been added to allow this functionality to be controlled from ordinary
4635 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4636 maintainers, who might want to run non-interactive scripts to
4637 build SBCL cores which will later be used interactively.)
4638 * minor incompatible change: The LOAD function no longer, when given
4639 a wild pathname to load, loads all files matching that pathname.
4640 Instead, an error of type FILE-ERROR is signalled.
4642 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4643 * bug 147 fixed: The compiler preserves its block link/count
4644 invariants more correctly now so that it doesn't crash. (thanks
4646 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4648 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4649 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4650 no-value-for-this-character as NIL (as specified by ANSI).
4651 * HOST-NAMESTRING on physical pathnames now returns a string that is
4652 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4653 (thanks to Christophe Rhodes)
4654 * The Alpha port handles icache flushing more correctly. (thanks to
4656 * More progress has been made toward bootstrapping under CLISP. (thanks
4657 to Christophe Rhodes)
4658 * The fasl file format has changed again, because dynamic loading
4659 on OpenBSD (which has non-ELF object files) motivated some cleanups
4660 in the way that foreign symbols are transformed and passed around.
4661 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4662 is no longer treated as whitespace by the reader, but instead as
4663 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4664 |A
\7fB|, instead of A as it used to.
4666 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4667 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4668 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4669 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4670 this as of 0.7.1.45, but was left out of the previous news section
4671 (thanks to Dan Barlow)
4672 * SBCL now runs on the Solaris operating system on SPARC architectures
4673 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4674 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4675 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4676 * SPARC backend cleanups, allowing builds of cores optimized for V8
4677 and V9 SPARCS, and also emission of code targeted to a particular
4678 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4680 * SBCL is closer to bootstrapping under CLISP, thanks to various
4681 fixes by Christophe Rhodes.
4682 * The fasl file format has changed again, to allow the compiler's
4683 INFO database to support symbol macros.
4684 * The user manual (in doc/) is formatted into HTML more nicely.
4685 (thanks to coreythomas)
4686 * The system is smarter about SUBTYPEP relationships, especially
4687 those involving NOT types (including types such as ATOM which are
4688 represented internally using NOT types). Thus SUBTYPEP is less
4689 likely to return (VALUES NIL NIL) in general, and in particular
4690 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4692 * The fasl file format has changed again, because the internal
4693 representation of types now includes a new slot to support the new
4694 SUBTYPEP-of-NOT-types logic.
4695 * (not a change in the main branch of SBCL, but a related prototype
4696 which can hopefully be merged into the main branch of SBCL in the
4697 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4698 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4699 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4700 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4701 dispatch macro character combinations. (thanks to Alexey Dejneka)
4702 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4703 that superficially look like logical namestrings correctly.
4704 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4706 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4707 default supplied-p) for &optional and &key arguments. (thanks to
4710 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4711 * incompatible change: The compiler is now less aggressive about
4712 tail call optimization, doing it only when (> SPACE DEBUG) or
4713 (> SPEED DEBUG). (This is an incompatible change because there are
4714 programs which relied on the old CMU-CL-style behavior to optimize
4715 away their unbounded recursion which will now die of stack overflow.)
4716 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4717 for non-GENCGC systems has been increased to 20M (since that
4718 seems much closer to the likely performance optimum for modern
4719 systems than the old 4M value was)
4720 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4721 and *DEBUG-PRINT-LEVEL*
4722 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4723 of CMU CL's support for SPARC, and various endianness and other
4724 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4725 * new syntactic sugar for the Unix command line: --load foo.bar is now
4726 an alternate notation for --eval '(load "foo.bar")'.
4728 ** The system now detects stack overflow and handles it gracefully,
4729 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4730 optimization settings. (This is a good thing in general, and
4731 its introduction in this version should be particularly timely
4732 for anyone whose code fails because of suppression of tail
4734 ** The system now hunts for the C variable "environ" in a more
4735 devious way, to avoid segfaults when the C library version differs
4736 between compile time and run time. (thanks to Christophe Rhodes)
4737 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4738 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4739 ** The compiler no longer issues bogus style warnings for undefined
4740 classes in the same source file as the DEFCLASSes which defined
4741 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4743 ** fixes in CONDITION class precedence list for undefined function
4744 errors (thanks to Alexei Dejneka)
4745 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4746 correctly. (thanks to Dan Barlow)
4747 ** portability fixes aiming at bootstrapping under CLISP (thanks
4748 to Dave McDonald and Christophe Rhodes)
4749 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4750 ** fixes in type translation and and type inference (thanks to
4752 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4753 ** various fixes in the new ports (thanks to Dan Barlow)
4754 * several changes related to debugging:
4755 ** suppression of tail recursion, as noted above
4756 ** stack overflow detection, as noted above
4757 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4758 is now the default. (For some time encapsulation has been more
4759 reliable than the breakpoint-based :ENCAPSULATE NIL
4760 implementation, at least on X86 systems; and I just noticed that
4761 encapsulation also seems closer to the spirit of the ANSI
4764 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4766 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4767 up properly again. (There was a packaging bug in 0.7.0 which
4768 left their definitions in SB-SYS::LOAD-FOREIGN and
4769 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4770 vital for most things which interface to C-level interfaces,
4771 like extensions working with sockets or databases or
4772 Perl-compatible regexes or whatever, and the need to fix
4773 this bug is the main reason that 0.7.1 was released so
4775 ** DEFGENERIC is now choosier about the methods it redefines, so that
4776 reLOADing a previously-LOADed file containing DEFGENERICs does
4777 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4778 cycle now works as it should. (thanks to Alexey Dejneka)
4779 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4780 fixed by Christophe Rhodes. (He actually submitted this patch
4781 months ago, and I delayed until after 0.7.0.)
4782 ** Bug 111 (internal compiler confusion about runtime checks on
4783 FUNCTION types) was fixed by Alexey Dejneka.
4784 * Some internal cleanups (getting rid of variables which aren't
4785 needed now that the byte interpreter is gone) caused the fasl
4786 file format number to change again.
4788 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4789 * major incompatible change: The default fasl file extension, i.e. the
4790 default extension for files produced by COMPILE-FILE, has changed
4791 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4793 ** There are many changes in the implementation of the compiler.
4794 SBCL is now essentially a compiler-only implementation of ANSI
4795 Common Lisp. EVAL still "interprets" a few special cases, but
4796 almost all the interesting cases are handled by creating
4797 a LAMBDA expression, calling COMPILE on it, then calling
4798 FUNCALL on the result.
4799 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4800 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4801 Since the code is newer, there might still be some new bugs
4802 (though not as many as before Martin Atzmueller's fixes:-). But
4803 the new code is substantially simpler and clearer, and hopefully
4804 any remaining bugs will be simpler, less fundamental, and more
4805 fixable then the bugs in the old code.
4806 ** The revised compiler is still a little unsteady on its feet.
4808 *** The debugging information it produces (particularly the names
4809 of FUNCTION objects) is sometimes much less useful than what
4810 the old compiler produced.
4811 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4812 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4813 within a MACROLET) has been temporarily weakened.
4814 ** There are new compiler optimizations for various functions:
4815 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4816 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4817 *** the math functions TRUNCATE, FLOOR, and CEILING
4818 *** the function-of-all-trades COERCE
4819 Mostly these should be transparent, but there's one
4820 potentially-annoying problem (bug 117): when the compiler
4821 inline-expands a function and does type analysis on the result,
4822 it can create control paths which have type mismatches, and
4823 when it can't prove that those control paths aren't taken,
4824 it will issue WARNINGs about the type mismatches. This is
4825 a particular problem in practice for the new sequence functions.
4826 It's not clear how this should be fixed, and for now, a
4827 workaround is given in the entry for 117 in the BUGS file.
4828 ** (Because of the interaction between the two previous items --
4829 occasional inlining problems and new inline expansions -- some
4830 of the new sequence function optimizations won't really kick in
4831 completely until debugging information, and then inlining, are
4832 straightened out in some future version.)
4833 * minor incompatible changes:
4834 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4835 DIRECTORY no longer implicitly promotes NIL slots of its
4836 pathname argument to :WILD. In particular, when you ask for the
4837 contents of a directory (which you used to be able to do without
4838 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4839 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4840 ** changes in behavior that ANSI explicitly defines to be
4841 implementation dependent:
4842 *** The new compiler-only implementation still conforms with ANSI,
4843 but acts a little different than before. Besides the obvious
4844 changes in performance tradeoffs (that the cost per form passed
4845 to EVAL has gone up, and the cost per form executed by EVAL
4846 has gone down), the behavior of the system changes a little
4847 because there are no longer any interpreted function objects.
4848 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4849 e.g. doing COMPILE on the output of interactive DEFUN is
4851 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4853 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4854 has changed from (:CL) to NIL.
4855 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4856 e.g. #\Newline and #\Tab, don't have names specified in the
4857 ANSI Common Lisp standard, is now based on their ASCII symbolic
4858 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4859 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4860 are no longer used for output.
4861 ** changes in internal implementation constants:
4862 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4863 4 million. (If your application spends a lot of time GCing and
4864 you have a lot of RAM, you might want to experiment with
4865 increasing it even more.)
4866 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4867 However, almost all old code should still continue to work without
4868 immediate update, as SB-C-CALL is now a (deprecated) nickname
4870 ** Old operator names in the style DEF-FOO are now deprecated in
4871 favor of new corresponding names DEFINE-FOO, for consistency with
4872 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4873 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4874 internal symbols, but a few supported extensions like
4875 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4876 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4877 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4878 etc. as you get deeper into recursive calls to the debugger
4879 command loop, instead of the old "5]", "5]]", "5]]]"
4880 sequence. (I was motivated to do this when squabbles between
4881 ILISP and SBCL left me very deeply nested in the debugger. In the
4882 short term, this change will probably provoke more ILISP/SBCL
4883 squabbles, but hopefully it will be an improvement in the long run.)
4884 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4885 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4886 function, since declaiming return types involving aliens is
4887 (1) annoyingly messy to do by hand and (2) vital to efficient
4888 compilation of code which calls such functions.
4889 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4890 longer reexported by the SB-EXT package. They're solely useful
4891 for alien code, so it seems more logical that you should get
4892 them from the SB-ALIEN package, not in SB-EXT.
4893 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4894 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4895 features. Instead, the code that they used to control is always
4896 built into the system.
4897 * many other bug fixes
4898 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4899 advantage of the new EVAL-WHEN stuff and to clean them up in
4900 general, and they are now more ANSI-compliant in a number of
4901 ways. Martin Atzmueller is responsible for a lot of this.
4902 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4904 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4905 *** correct ERROR type for various file operations
4906 *** some fixes for Lisp streams
4907 *** DEFMETHOD syntax checking
4908 *** changing old weird representation of debug information as
4909 strings (which, among their other deficiencies, don't transform
4910 correctly when you rename packages, and don't change their
4911 print representation when you change things like *PACKAGE*
4912 and *PRINT-LENGTH*) to symbols and lists of symbols
4913 He also made several improvements and fixed several bugs in DESCRIBE.
4914 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4916 *** misbehavior of WRITE-STRING/WRITE-LINE
4917 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4918 and several other LOOP problems as well
4919 *** DIRECTORY when similar filenames are present
4920 *** DEFGENERIC with :METHOD options
4921 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4922 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4923 *** argument ordering in FIND with :TEST option
4924 *** mishandled package designator argument in APROPOS-LIST
4925 *** various problems in the backquote readmacro
4926 *** a bug in APROPOS
4927 *** probably some others that I'm not describing very well here,
4928 since the CVS log documents them by reference to sbcl-devel
4929 messages, and the SourceForge archives aren't working well.:-(
4930 ** Dan Barlow improved the Alpha port (and is making progress on the
4931 PPC port, for those of you who think different).
4932 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4933 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4934 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4935 continues to work on the SPARC port (for those of you in a position
4936 to look down upon our little PC-compatible boxes from a great height).
4937 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4938 and uses that copy, rather than the current dynamic value, when
4939 it's trying to decide whether to truncate output. Thus e.g.
4940 (let ((*print-lines* 50))
4941 (pprint-logical-block (stream nil)
4943 (let ((*print-lines* 8))
4944 (print (aref possiblybigthings i) stream)))))
4945 should now truncate the logical block only at 50 lines, instead of
4946 often truncating it at 8 lines, as it did before.
4947 * The doc/cmucl/ directory, containing old CMU CL documentation
4948 from the time of the fork, is no longer part of the base system.
4949 SourceForge has shut down its anonymous FTP service, and with it
4950 my original plan for distributing the old CMU CL documentation
4951 there. For now, if you need these files you can download an old
4952 SBCL source release and extract them from it.
4953 * The fasl file version number changed again, for dozens of reasons,
4954 some of which are apparent above.
4956 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4957 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4958 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4959 patch, so that DISASSEMBLE output is much nicer.
4960 * The code in the SB-PROFILE package now seems reasonably stable.
4961 I still haven't decided what the final interface should look like
4962 (I'd like PROFILE to interact cleanly with TRACE, since both
4963 facilities use function encapsulation) but if you have a need
4964 for profiling now, you can probably use it successfully with
4965 the current CMU-CL-style interface.
4966 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4967 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4968 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4969 link now returns the dangling link itself, and for similar
4970 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4971 link itself. (In these cases the old code signalled an error and
4972 looped endlessly, respectively.) Thus, DIRECTORY now works even
4973 in the presence of dangling and cyclic symbolic links.
4974 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4975 is now a supported extension again, since the consensus on
4976 sbcl-devel was that it can be useful for ordinary development
4977 work, not just for debugging SBCL itself.
4978 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4979 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4980 that currently-defined functions might be redefined later with
4981 different return types.
4982 * Hash tables can be printed readably, as inspired by CMU CL code
4983 of Eric Marsden and SBCL code of Martin Atzmueller.
4984 * better error handling in CLOS method combination, thanks to
4985 Martin Atzmueller porting Pierre Mai's CMU CL patches
4986 * more overflow fixes for >16Mbyte I/O buffers
4987 * A bug in READ has been fixed, so that now a single Ctrl-D
4988 character suffices to cause end-of-file on character streams.
4989 In particular, now you only need one Ctrl-D at the command
4990 line (not two) to exit SBCL.
4991 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4993 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4994 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4995 does the right thing.
4996 * The implementation of some type tests, especially for CONDITION
4997 types, is now tidier and maybe faster, due to CMU CL code
4998 originally by Douglas Crosher, ported by Martin Atzmueller.
4999 * Some math functions have been fixed, and there are new
5000 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5001 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5002 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5003 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5004 likely to be built into sbcl-0.7.0.)
5005 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5006 CL, ported to SBCL by Martin Atzmueller)
5007 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5008 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5009 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5010 * There's a new slam.sh hack to shorten the edit/compile/debug
5011 cycle for low-level changes to SBCL itself, and a new
5012 :SB-AFTER-XC-CORE target feature to control the generation of
5013 the after-xc.core file needed by slam.sh.
5014 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5015 COMPILE-FILE is no longer supported, so that now every function
5016 gets an entry point, so that block compilation looks a little
5017 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5018 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5019 returns the number of bytes consed since the system started,
5020 rather than the number consed since the first time the function
5021 was called. (The new definition parallels ANSI functions like
5022 CL:GET-INTERNAL-RUN-TIME.)
5023 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5024 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5025 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5026 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5027 * Fasl file version numbers are now independent of the target CPU,
5028 since historically most system changes which required version
5029 number changes have affected all CPUs equally. Similarly,
5030 the byte fasl file version is now equal to the ordinary
5033 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5034 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5035 is no longer recognized. I apologize for this, because it was
5036 listed in SB-EXT as a supported extension, but I found that
5037 its existing behavior was poorly specified, as well as incorrectly
5038 specified, and it looked like too much of a mess to straighten it
5039 out. I have enough on my hands trying to get ANSI stuff to work..
5040 * many patches ported from CMU CL by Martin Atzmueller, with
5041 half a dozen bug fixes in pretty-printing and the debugger, and
5042 half a dozen others elsewhere
5043 * fixed bug 13: Floating point infinities are now supported again.
5044 They might still be a little bit flaky, but thanks to bug reports
5045 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5046 as flaky as they were.
5047 * The --noprogrammer command line option is now supported. (Its
5048 behavior is slightly different in detail from what the old man
5049 page claimed it would do, but it's still appropriate under the
5050 same circumstances that the man page talks about.)
5051 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5052 are now supported, and enabled by default. Thus, the compiler can
5053 handle many floating point and complex operations much less
5054 inefficiently. (Thus e.g. you can implement a complex FFT
5056 * The compiler now detects type mismatches between DECLAIM FTYPE
5057 and DEFUN better, and implements CHECK-TYPE more correctly, and
5058 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5059 thanks to patches from Martin Atzmueller.
5060 * various fixes to make the cross-compiler more portable to
5061 ANSI-conforming-but-different cross-compilation hosts (notably
5062 Lispworks for Windows, following bug reports from Arthur Lemmens)
5063 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5064 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5065 fixed thanks to Pierre Mai's CMU CL patches.
5066 * fixes to keep the system from overflowing internal counters when
5067 it tries to use i/o buffers larger than 16M bytes
5068 * fixed bug 45a: Various internal functions required to support
5069 complex special functions have been merged from CMU CL sources.
5070 (When I was first setting up SBCL, I misunderstood a compile-time
5071 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5072 * improved support for type intersection and union, fixing bug 12
5073 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5074 more obscure bugs as well
5075 * some steps toward byte-compiling non-performance-critical
5076 parts of the system, courtesy of patches from Martin Atzmueller
5077 * Christophe Rhodes has made some debian packages of sbcl at
5078 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5079 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5080 stable, but are nonetheless usable. When he's ready, I'd be happy
5081 to add them to the SourceForge "File Releases" section. (And if
5082 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5083 * new fasl file format version number (because of changes in
5084 internal representation of (OR ..) types to accommodate the new
5085 support for (AND ..) types, among other things)
5087 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5088 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5090 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5092 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5093 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5094 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5095 * DESCRIBE now works on structure objects again.
5096 * Most function call argument type mismatches are now handled as
5097 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5098 know whether the function will be redefined before the call is
5099 executed. (The compiler could flag local calls with full WARNINGs,
5100 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5101 it doesn't keep track of enough information to know whether calls
5102 are local in this sense.)
5103 * Compiler output is now more verbose, with messages truncated
5104 later than before. (There should be some supported way for users
5105 to override the default verbosity, but I haven't decided how to
5106 provide it yet, so this behavior is still controlled by the internal
5107 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5108 src/compiler/ir1util.lisp.)
5109 * Fasl file format version numbers have increased again, because
5110 support for the Gray streams extension changes the layout of the
5111 system's STREAM objects.
5112 * The Gray subclassable streams extension now works, thanks to a
5113 patch from Martin Atzmueller.
5114 * The full LOAD-FOREIGN extension (not just the primitive
5115 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5116 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5117 but like most other programs, it defaults to copying the Unix
5118 environment from the original process instead of starting the
5119 new process in an empty environment.
5120 * Extensions which manipulate the Unix environment now support
5121 an :ENVIRONMENT keyword option which doesn't smash case or
5122 do other bad things. The CMU-CL-style :ENV option is retained
5123 for porting convenience.
5124 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5125 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5127 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5129 * A patch from Martin Atzmueller seems to have solved the SIGINT
5130 problem, and as far as we know, signal-handling now works cleanly.
5131 (If you find any new bugs, please report them!)
5132 * The system no longer defaults Lisp source file names to types
5133 ".l", ".cl", or ".lsp", but only to ".lisp".
5134 * The compiler no longer uses special default file extensions for
5135 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5136 seems to expect a single default extension for all compiled code,
5137 and there's no compelling reason to try to stretch the standard
5138 to allow two different extensions.) Instead, byte-compiled files
5139 default to the same extension as native-compiled files.
5140 * Fasl file format version numbers have increased again, because
5141 a rearrangement of internal implementation packages made some
5142 dumped symbols in old fasl files unreadable in new cores.
5143 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5144 many fewer weird special cases.
5145 * Bug #17 (differing COMPILE-FILE behavior between logical and
5146 physical pathnames) has been fixed, and some related misbehavior too,
5147 thanks to a patch from Martin Atzmueller.
5148 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5149 by Tim Moore, ported to SBCL by Martin Atzmueller.
5150 * Martin Atzmueller fixed several filesystem-related problems,
5151 including bug #36, in part by porting CMU CL patches, which were
5152 written in part by Paul Werkowski.
5153 * More compiler warnings in src/runtime/ are gone, thanks to
5154 more patches from Martin Atzmueller.
5155 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5158 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5160 * DESCRIBE now works on CONDITION objects.
5161 * The debugger now handles errors which arise when trying to print
5162 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5164 * The build system now uses an additional file, customize-target-features.lisp,
5165 to allow local modifications to the target *FEATURES* list. (The point of
5166 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5167 debugging features enabled, without having to worry about propagating it
5168 into everyone's system when I do a "cvs update".) When no
5169 customize-target-features.lisp file exists, the target *FEATURES* list
5170 should be constructed the same way as before.
5171 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5172 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5173 warn about behavior which is undefined under the ANSI spec. Note: This
5174 is specified by ANSI, but it's not very popular with programmers.
5175 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5176 macro in the SBCL sources for an example of a workaround which you
5177 might use to make portable ANSI-standard code which does what you want.
5178 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5179 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5180 when it's used as a non-toplevel form. (This is required in order
5181 to implement the DEFCONSTANT-EQX macro.)
5182 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5183 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5184 funny things, due to bugs in the implementation of EVAL-WHEN
5185 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5186 non-toplevel DEFCONSTANTs are uncommon.)
5187 * The core file version number and fasl file version number have been
5188 incremented, because the old noncompliant DEFCONSTANT behavior involved
5189 calling functions which no longer exist, and because I also took the
5190 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5191 * fixed bug 1 (error handling before read-eval-print loop starts), and
5192 redid debugger restarts and related debugger commands somewhat while
5194 ** The QUIT debugger command is gone, since it did something
5195 rather different than the SB-EXT:QUIT command, and since it never
5196 worked properly outside the main toplevel read/eval/print loop.
5197 Invoking the new TOPLEVEL restart provides the same functionality.
5198 ** The GO debugger command is also gone, since you can just invoke
5199 the CONTINUE restart directly instead.
5200 ** The TOP debugger command is also gone, since it's redundant with the
5201 FRAME 0 command, and since it interfered with abbreviations for the
5203 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5205 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5206 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5207 some porting work by Martin Atzmueller)
5208 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5209 with a boatload of patches which he ported to SBCL. Now that those
5211 ** The system tries to make sure that its low-priority messages
5212 are prefixed by semicolons, to help people who like to use
5213 syntax highlighting in their ILISP buffer. (This patch
5214 was originally due to Raymond Toy.)
5215 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5216 patches originally written by Raymond Toy.
5217 ** The compiler understands coercion between single-value and
5218 multiple-VALUES type expressions better, getting rid of some very
5219 weird behavior, thanks to patches originally by Robert MacLachlan
5220 and Douglas Crosher.
5221 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5222 lambda lists, thanks to a patch originally by Pierre Mai.
5223 ** The system no longer bogusly warns about "abbreviated type
5225 ** The compiler gets less confused by inlining and RETURN-FROM,
5226 thanks to some patches originally by Tim Moore.
5227 ** The system no longer hangs when dumping circular lists to fasl
5228 files, thanks to a patch originally from Douglas Crosher.
5229 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5230 undefined function error.
5231 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5232 in structure slot initforms) for now, documented workaround instead:-|
5233 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5234 * fixed bug 5: added stubs for various Gray stream functions called
5235 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5236 installed, at least appropriate type errors are generated
5237 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5238 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5239 consistently in DEFMETHOD forms.
5240 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5241 it doesn't seem to affect SBCL after all
5242 * The C runtime system now builds with better optimization and many
5243 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5245 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5247 * The system is now under CVS at SourceForge (instead of the
5248 CVS repository on my home machine).
5249 * The new signal handling code has been tweaked to treat register
5250 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5251 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5252 downstream, e.g. in debug-int.lisp, has implicit dependencies
5253 on the unsignedness of integer representation of machine words,
5254 and that caused the system to bomb out with infinite regress
5255 when trying to recover from type errors involving signed values,
5256 e.g. (BUTLAST '(1 2 3) -1).)
5257 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5258 (This was one of the bugs Peter Van Eynde reported back in July.)
5259 * The system now uses code inspired by Colin Walters' O(N)
5260 implementation of MAP (from the cmucl-imp@cons.org mailing
5261 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5262 inline the MAP operation, and there is more than one
5263 sequence argument to the MAP call (so that it can't just
5264 do ETYPECASE once and for all based on the type of the
5265 single sequence argument). (The old non-inline implementation
5266 of the general M-argument sequence-of-length-N case required
5267 O(M*N*N) time when any of the sequence arguments were LISTs.)
5268 * The QUIT :UNIX-CODE keyword argument has been renamed to
5269 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5270 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5272 * Raymond Wiker's patches to port dynamic loading from Linux to
5273 FreeBSD have been added.
5274 * The BUGS file is now more nearly up to date, thanks in large part
5275 to Martin Atzmueller's review of it.
5276 * The debugger now flushes standard output streams before it begins
5277 its output ("debugger invoked" and so forth).
5278 * The core version number and fasl file version number have both
5279 been incremented, because of incompatible changes in the layout
5281 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5282 used to not be called for a saved Lisp image.)
5283 * Martin Atzmueller's version of a patch to fix a compiler crash,
5284 as posted on sbcl-devel 13 September 2000, has been installed.
5285 * Instead of installing Martin Atzmueller's patch for the
5286 compiler transform for SUBSEQ, I deleted the compiler transform,
5287 and transforms for some similar consing operations.
5288 * A bug in signal handling which kept TRACE from working on OpenBSD
5290 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5291 away by constant folding
5292 * The system now defines its address space constants in one place
5293 (in the Lisp sources), and propagates them automatically elsewhere
5294 (through GENESIS and the sbcl.h file). Therefore, patching the
5295 address map is less unnecessarily tedious and error-prone. The
5296 Lisp names of address space constants have also been systematized.
5297 * CVS tags like dollar-Header-dollar have been removed from
5298 the sources, because they have never saved me trouble and
5299 they've been source of trouble working with patches and other
5300 diff-related operations.
5301 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5302 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5304 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5306 * The system has been ported to OpenBSD.
5307 * The system now compiles with a simple "sh make.sh" on the systems
5308 that it's supported on. I.e., now you no longer need to tweak
5309 text in the target-features.lisp-expr and symlinks in src/runtime/
5310 by hand, the make.sh takes care of it for you.
5311 * The system is no longer so grossly inefficient when compiling code
5312 involving vectors implemented as general (not simple) vectors (VECTOR T),
5313 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5314 which dares to use the various sequence functions on non-simple
5315 vectors, takes less of a performance hit.
5316 * There is now a primitive type predicate VECTOR-T-P
5317 to test for the (VECTOR T) type, so that e.g.
5318 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5319 can now be compiled with some semblance of efficiency. (The old code
5320 turned the type declaration into a full call to %TYPEP at runtime!)
5321 * AREF on (VECTOR T) is still not fast, since it's still compiled
5322 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5323 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5324 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5325 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5326 without making full calls to SUBTYPEP at runtime.
5327 (Some analogous efficiency issues for non-simple vectors specialized to
5328 element types other than T, or for non-simple multidimensional arrays,
5329 have not been addressed. They could almost certainly be handled the
5330 same way if anyone is motivated to do so.)
5331 * The changes in array handling break binary compatibility, so
5332 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5333 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5334 instead of (VALUES T T).
5335 * By following the instructions that Dan Barlow posted to sbcl-devel
5336 on 2 July 2000, I was able to enable primitive dynamic object
5337 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5338 functionality is not implemented (since it calls ld to resolve
5339 library references automatically, requiring RUN-PROGRAM for its
5340 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5341 try to resolve library references) is now supported.
5342 * The system now flushes the standard output streams when it terminates,
5343 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5344 them at several other probably-convenient times, e.g. in each pass of
5345 the toplevel read-eval-print loop, and after evaluating a form given
5346 as an "--eval" command-line option. (These changes were motivated by a
5347 discussion of stream flushing issues on cmucl-imp in August 2000.)
5348 * The source transform for TYPEP of array types no longer assumes
5349 that an array whose element type is a not-yet-defined type
5350 is implemented as an array of T, but instead punts, so that the
5351 type will be interpreted at runtime.
5352 * There is now some support for cross-compiling in make.sh: each of
5353 the phases of make.sh has its own script. (This should be transparent
5354 to people doing ordinary, non-cross-compile builds.)
5355 * Since my laptop doesn't have hundreds of megabytes of memory like
5356 my desktop machine, I became more motivated to do some items on
5357 my to-do list in order to reduce the size of the system a little:
5358 ** Arrange for various needed-only-at-cold-init things to be
5359 uninterned after cold init. To support this, those things have
5360 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5361 symbols with such names are now uninterned after cold init).
5362 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5363 fasl files for cold load.
5364 ** Remove the old compiler structure pooling code (which used to
5365 be conditional on the target feature :SB-ALLOC) completely.
5366 ** Redo the representation of some data in cold init to be more compact.
5367 (I also looked into supporting byte compiled code at bootstrap time,
5368 which would probably reduce the size of the system a lot, but that
5369 looked too complicated, so I punted for now.)
5370 * The maximum signal nesting depth in the src/runtime/ support code has
5371 been reduced from 4096 to 256. (I don't know any reason for the very
5372 large old value. If the new smaller value turns out to break something,
5373 I'll probably just bump it back up.)
5374 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5376 * Many, many bugs reported by Peter Van Eynde have been added to
5377 the BUGS list; some have even been fixed.
5378 * While enabling dynamic object file loading, I tried to make the
5379 code easier to understand, renaming various functions and variables
5380 with less ambiguous names, and changing some function calling
5381 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5382 * While trying to figure out how to do the OpenBSD port, I tried to
5383 clean up some of the code in src/runtime/. In particular, I dropped
5384 support for non-POSIX signal handling, added various comments,
5385 tweaked the code to reduce the number of compilation warnings, and
5386 renamed some files to increase consistency.
5387 * To support the new automatic configuration functionality in make.sh,
5388 the source file target-features.lisp-expr has been replaced with the
5389 source file base-target-features.lisp-expr and the machine-generated
5390 file local-target-features.lisp-expr.
5391 * fixed a stupid quoting error in make.sh so that using CMU CL
5392 "lisp -batch" as cross-compilation host works again
5394 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5396 * DESCRIBE no longer tries to call itself recursively to describe
5397 bound/fbound values, so that it no longer fails on symbols which are
5398 bound to themselves (like keywords, T, and NIL).
5399 * DESCRIBE now works on generic functions.
5400 * The printer now prints less-screwed-up representations of closures
5401 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5402 * A private symbol is used instead of the :EMPTY keyword previously
5403 used to mark empty slots in hash tables. Thus
5404 (DEFVAR *HT* (MAKE-HASH-TABLE))
5405 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5406 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5407 now does what ANSI says that it should. (You can still get
5408 similar noncompliant behavior if bang on the hash table
5409 implementation with all the symbols you get back from
5410 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5411 This breaks binary compatibility, since tests for equality to
5412 :EMPTY are wired into things like the macroexpansion of
5413 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5415 * There's now a minimal placeholder implementation for CL:STEP,
5416 as required by ANSI.
5417 * An obscure bug in the interaction of the normal compiler, the byte
5418 compiler, inlining, and structure predicates has been patched
5419 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5420 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5422 * Missing ordinary arguments in a macro call are now detected even
5423 when the macro lambda list contains &KEY or &REST.
5424 * The debugger no longer complains about encountering the top of the
5425 stack when you type "FRAME 0" to explicitly instruct it to go to
5426 the top of the stack. And it now prints the frame you request even
5427 if it's the current frame (instead of saying "You are here.").
5428 * As specified by ANSI, the system now always prints keywords
5429 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5431 * The default initial SIZE of HASH-TABLEs is now smaller.
5432 * Type information from CLOS class dispatch is now propagated
5433 into DEFMETHOD bodies, so that e.g.
5434 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5436 is now basically equivalent to
5437 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5438 (DECLARE (TYPE SINGLE-FLOAT X))
5440 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5441 operation, without having to do run-time type dispatch.
5442 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5443 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5444 * Since I don't seem to be making big file reorganizations very often
5445 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5446 is overflowing my ability to conveniently back them up), I've finally
5447 checked the system into CVS. (The CVS repository is on my home system,
5448 not at SourceForge -- putting it on SourceForge might come later.)
5449 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5450 high-level GC-NOTIFY-FOO functions send their output. (There's
5451 still very little control of where low-level verbose GC functions
5452 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5453 less than it used to -- the GC-NOTIFY-FOO functions are now under
5454 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5455 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5456 in only one place in the source code, and propagates it automatically
5457 everywhere that it's needed. Thus e.g. when I bump the version from
5458 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5459 * The C source files now include boilerplate legalese and documentation
5460 at the head of each file (just as the Lisp source files already did).
5461 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5462 to his page will be replaced with a link to his new CLiki service.
5464 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5466 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5467 * The build process now looks for GNU make under the default name "gmake",
5468 instead of "make" as it used to. If GNU make is not available as "gmake"
5469 on your system, you can change this default behavior by setting the
5470 GNUMAKE environment variable.
5471 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5472 can build without error under CMU CL.
5474 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5476 * There is now a partial SBCL user manual (with some new text and some
5477 text cribbed from the CMU CL manual).
5478 * The beginnings of a profiler have been added (starting with the
5479 CMU CL profiler and simplifying and cleaning up). Eventually the
5480 main interface should be through the TRACE macro, but for now,
5481 it's still accessed through vaguely CMU-CL-style functions and macros
5482 exported from the package SB-PROFILE.
5483 * Some problems left over from porting CMU CL to the new
5484 cross-compilation bootstrap process have been cleaned up:
5485 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5486 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5487 part when getting rid of the compiler *BACKEND* stuff.)
5488 ** The value of *NULL-TYPE* was screwed up, because it was
5489 being initialized before the type system knew the final
5490 definition of the 'NULL type. This screwed up several key
5491 optimizations in the compiler, causing inefficiency in all sorts
5492 of places. (I found it because I wanted to understand why
5493 GET-INTERNAL-RUN-TIME was consing.)
5494 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5495 PROCLAIM FTYPE information. Unfortunately this broke binary
5496 compatibility again, since now the forms output by DEFGENERIC
5497 to refer to functions which didn't exist in 0.6.3.
5498 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5499 can use the new (as of 0.6.3) transform for SOME into MAP into
5501 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5502 values to (INTEGER 0 1000000), so that the time code will no longer
5503 occasionally get blown up by Linux returning 1000000 microseconds
5504 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5505 its output conform to the ANSI spec. (Alas, this makes its output
5506 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5507 * A full call to MAP NIL with a single sequence argument no longer conses.
5508 * fixes to problems pointed out by Martin Atzmueller:
5509 * The manual page no longer talks about multiprocessing as though
5510 it were currently supported.
5511 * The ILISP support patches have been removed from the distribution,
5512 because as of version 5.10.1, ILISP now supports SBCL without us
5513 having to maintain patches.
5514 * added a modified version of Raymond Toy's recent CMU CL patch for
5515 EQUALP comparison of HASH-TABLE
5517 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5519 * The system still can't cross-compile itself with
5520 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5521 entails), but at least it can compile more of itself that way
5522 than it used to be able to, and various buglets which were uncovered
5523 by trying to cross-compile itself that way have now been fixed.
5524 * This release breaks binary compatibility again. This time
5525 at least I've incremented the FASL file format version to 2, so that the
5526 problem can be detected reliably instead of just causing weird errors.
5527 * various new style warnings:
5528 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5529 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5530 ** using the lexical binding of a variable named in the *FOO* style
5531 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5532 as specified by ANSI.
5533 * *RANDOM-STATE* is no longer automatically initialized from
5534 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5535 default behavior of the system is to repeat its behavior every time
5536 it's run. If you'd like to change this behavior, you can always
5537 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5538 old convention there was no comparably easy way to get the system to
5539 repeat its behavior every time it was run.
5540 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5541 FTYPE declarations has been removed, in favor of their ANSI
5542 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5543 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5544 the types of their sequence arguments can be determined at compile time.
5545 This is done through a new open code expansion for MAP which eliminates
5546 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5547 argument types can be determined at compile time.
5548 * The optimizer now transforms COERCE into an identity operation when it
5549 can prove that the coerced object is already of the correct type. (This
5550 can be a win for machine generated code, including the output of other
5551 optimization transforms, such as the MAP transform above.)
5552 * Credit information has been moved from source file headers into CREDITS.
5553 * Source file headers have been made more standard.
5554 * The CASE macro now compiles without complaining even when it has
5557 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5559 * (Note that the way that the PCL macroexpansions were rewritten
5560 to accommodate the change in DEFGENERIC below breaks binary
5561 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5562 not run under sbcl-0.6.2. Once we get out of alpha releases,
5563 i.e. hit release 1.0.0, we'll probably try to maintain binary
5564 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5565 and sbcl-1.4.4. Until then, however, it might be fairly common
5566 for maintenance releases to break binary compatibility.)
5567 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5569 * The reporting of unhandled signals has been changed to print some
5570 explanatory text as well as the report form. (Previously only
5571 the report form was printed.)
5572 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5573 it defines, so that the compiler no longer issues undefined function
5574 warnings for compiled-but-not-yet-loaded generic functions.
5575 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5576 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5577 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5578 section of the ANSI spec are supported.
5579 * The "" nickname for the "KEYWORD" package has been removed.
5580 The reader still handles symbol tokens which begin with a package marker
5581 as keywords, but it doesn't expose its mechanism for doing so in the
5582 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5583 * The system now issues STYLE-WARNINGs for contradictory TYPE
5584 proclamations. (Warnings for contradictory FTYPE proclamations would
5585 be nice too, but those can't be done usefully unless the type system
5586 is made smarter about FUNCTION types.)
5587 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5588 systematized, so that "*target-*.lisp is supposed to exist only on the
5589 target and imply that there's a related file which exists on the
5590 host, and *host-*.lisp is supposed to exist only on the host and imply
5591 that there's a related file which exists on the target. This involves a
5592 lot of renaming. Hopefully the acute confusion caused by the renaming
5593 will be justified by the reduction in chronic confusion..
5594 ** runtime-type.lisp -> early-target-type.lisp
5595 ** target-type.lisp -> late-target-type.lisp
5596 ** early-host-format.lisp -> early-format.lisp
5597 ** late-host-format.lisp -> late-format.lisp
5598 ** host-error.lisp -> misc-error.lisp
5599 ** early-error.lisp -> early-target-error.lisp
5600 ** late-error.lisp -> late-target-error.lisp
5601 ** host-defboot.lisp -> early-defboot.lisp
5602 ** code/misc.lisp -> code/target-misc.lisp
5603 ** code/host-misc.lisp -> code/misc.lisp
5604 ** code/numbers.lisp -> code/target-numbers.lisp
5605 ** code/early-numbers.lisp -> numbers.lisp
5606 ** early-host-type.lisp -> early-type.lisp
5607 ** late-host-type.lisp -> late-type.lisp
5608 ** host-typep.lisp -> typep.lisp
5609 ** load.lisp -> target-load.lisp
5610 ** host-load.lisp -> load.lisp
5611 ** host-disassem.lisp -> disassem.lisp
5612 ** host-insts.lisp -> insts.lisp
5613 ** byte-comp.lisp -> target-byte-comp.lisp
5614 ** host-byte-comp.lisp -> byte-comp.lisp
5615 ** host-signal.lisp -> signal.lisp
5616 ** host-defstruct.lisp -> defstruct.lisp
5617 ** late-target-type.lisp -> deftypes-for-target.lisp
5618 Furthermore, several other previously target-only files foo.lisp (e.g.
5619 hash-table.lisp and random.lisp) have been split into a target-and-host
5620 foo.lisp file and a target-only target-foo.lisp file, with their key type
5621 definitions in the target-and-host part, so that the cross-compiler will
5622 know more about target types.
5623 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5624 gone away. In their place are various *BACKEND-FOO* variables
5625 corresponding to the slots of the old structure.
5626 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5627 into the target SBCL has been fixed.
5628 * The chill.lisp system for loading cold code into a running SBCL
5630 * Support for the CMU CL "scavenger hook" extension has been removed.
5631 (It was undocumented and unused in the CMU CL sources that SBCL was
5632 derived from, and stale in sbcl-0.6.1.)
5633 * Various errors in the cross-compiler type system were detected
5634 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5635 (enabling various consistency checks). Many of them were fixed,
5636 but some hard problems remain, so the compiler is back to
5637 running without *TYPE-SYSTEM-INITIALIZED* for now.
5638 * As part of the cross-compiler type system cleanup, I implemented
5639 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5640 * I have started adding UNCROSS calls throughout the type system
5641 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5642 on cross-compiler input files will be able to go away, and various
5644 * CONSTANTP now returns true for quoted forms (as explicitly required
5647 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5649 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5650 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5651 (MAKE-LIST -1). In the longer term, it ought to become true
5652 that declarations are assertions even at SAFETY 1. For now, it's not
5653 quite true even at SAFETY 3, but it's at least more nearly true..
5654 (Note that this change seems to increases the size of the system by
5655 O(5%) and to decrease the speed of the compiler by 20% or more.)
5656 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5657 for the problem of printing dozens of lines of distracting information
5658 about low-level system machinery as part of the top stack frame
5659 on entry to the debugger when an undefined function was called.
5660 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5661 is not reset to COMMON-LISP-USER.
5662 * Compilation of stuff related to dyncount.lisp has been made conditional
5663 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5664 smaller. The various dyncount-related symbols have been moved into
5665 a new "SB-DYNCOUNT" package.
5666 * tty-inspect.lisp has been renamed to inspect.lisp.
5667 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5668 feature has gone away. (When we eventually port to other flavors of
5669 libc and/or Unix, we'll try to make the differences between flavors
5670 invisible at the user level.)
5671 * Various other *FEATURES* tags, and/or their associated conditionals,
5672 have been removed if obsolescent, or given better documentation, or
5673 sometimes given more-mnemonic names.
5675 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5677 * tidied up "make.sh" script
5678 * tidied up system directory structure
5679 * better "clean.sh" behavior
5680 * added doc/FOR-CMUCL-DEVELOPERS
5681 * many many small tweaks to output format, e.g. removing possibly-confusing
5682 trailing #\. character in DESCRIBE-INSTANCE
5683 * (EQUALP #\A 'A) no longer signals an error.
5684 * new hashing code, including EQUALP hashing
5685 * tidied up Lisp initialization and toplevel
5686 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5687 * command line argument processing
5688 * added POSIX-GETENV function to deal with Unix-ish environment variables
5689 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5690 terminating SBCL on EOF
5691 * non-verbose GC by default
5692 * There is no more "sbcl" shell script; the sbcl file is now the C
5693 runtime executable (just like CMU CL).
5694 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5696 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5697 symbol and package information as Lisp native symbol and package objects
5698 instead of strings naming symbols and strings naming packages. This way,
5699 whenever packages are renamed (as in warm init), debug information is
5700 transformed along with everything else.
5701 * tweaked the optimization policy declarations which control the building
5702 of SBCL itself. Now, among other things, the system no longer saves
5703 source location debugging information. (This helps two problems at once
5704 by reducing SBCL size and by keeping SBCL from trying to look for its
5705 sources -- which may not exist -- when reporting errors.)
5706 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5707 debugging and testing purposes
5708 * cleaned up printing, making the printer call PRINT-OBJECT for
5709 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5710 methods, giving nearly-ANSI behavior
5711 * converted almost all special variables to use *FOO* naming convention
5712 * deleted PARSE-TIME functionality, since it can be done portably
5713 * moved some files out of cold init into warm init
5714 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5716 * regularized formatting of source files
5717 * added an install.sh script
5718 * fixed ridiculous memory usage of cross-compiler by making
5719 compiler/alloc.lisp not try to do pooling unless it can hook
5720 itself into the GC of the cross-compilation host. Now the system
5721 builds nicely on my old laptop.
5722 * added :SB-ALLOC in target-features.lisp-expr
5723 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5724 was not implemented)
5725 * re-did condition handling and note reporting in the compiler. Notes
5726 are no longer handled by signalling conditions. Style warnings
5727 and warnings are handled more correctly and reported in such a way
5728 that it's easy to find one or the other in your output (so that you
5729 can e.g. figure out which of many problems caused COMPILE-FILE to
5731 * changed the severity of several compiler warnings from full WARNING
5732 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5733 compiler note reporting so that it doesn't use the condition system
5734 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5735 COMPILE-FILE command)
5736 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5737 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5738 no longer supported, since their implementation was deeply intertwingled
5739 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5740 * removed bogus "support" for compiler macros named (SETF FOO), and
5741 removed the compiler macro for SETF INFO (but only after making a fool
5742 of myself on the cmucl-imp mailing list by posting a bogus patch for
5743 DEFINE-COMPILER-MACRO..)
5744 * Compiled files containing forms which have side effects on the Lisp
5745 reader (such as DEFPACKAGE forms) are now handled more correctly.
5746 (Compiler queuing of top level lambdas has been suppressed by setting
5747 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5748 * deleted various currently-unused source files, e.g. gengc.lisp. They
5749 may be added back at some point e.g. when porting to other architectures,
5750 but until they are it's distracting to distribute them and to try to
5752 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5753 there were so many of them they're just distractions, and UNCROSS is
5754 known to be able to handle the current sources
5755 * moved PROFILE functionality into TRACE, so that it will be clear
5756 how the wrapping and unwrapping of functions when you profile them
5757 interacts with the wrapping and unwrapping of functions when you
5758 trace them. (Actually, the functionality isn't there yet, but at least
5759 the interface specification is there. Hopefully, the functionality will
5760 arrive with some future maintenance release.)
5761 * removed host-oops.lisp
5762 * changed signature of QUIT function to allow UNIX-CODE argument
5763 * fixed READ-SEQUENCE bug
5764 * tweaked verbose GC output so that it looks more like the progress
5765 output that ANSI specifies for functions like LOAD
5766 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5767 * added <http://sbcl.sourceforge.com> to the banner information printed by