1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.42
3 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
5 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
7 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
8 thanks to Andrew Golding)
9 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
11 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
12 breaking code that tried to write the value of a printer control variable.
13 (lp#581564, thanks to Stas Boukarev)
14 * bug fix: WRITE compiler macro did not handle output stream designators
15 correctly. (lp#598374, thanks to Stas Boukarev)
16 * bug fix: better availability of names of foreign functions in backtraces
17 on Linux. (lp#626962, thanks to Stas Boukarev)
18 * bug fix: scripting fixes for Solaris and FreeBSD. (lp#615497, thanks to
20 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, thanks to
22 * bug fix: using aliases for builtin classes as defmethod specializers
23 without adding DEFTYPEs for them works. (lp#618387)
24 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
26 * bug fix: legally dynamic-extent lists and vectors used as
27 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
28 * bug fix: inline-expansion creating references to dead lambda-variables
29 (lp#454681, thanks to Alexey Dejneka)
31 changes in sbcl-1.0.42 relative to sbcl-1.0.41
33 ** Cross-compilation host is now specified to make.sh using
34 command-line argument --xc-host=<command> instead of a positional
35 argument. (thanks to Daniel Herring)
36 ** Install location can be specified to make.sh using command-line
37 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
38 * optimization: The default implementation of
39 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
40 * enhancement: Explicit memory barrier operations are now available for use
41 by multithreaded code. See documentation for details.
42 * enhancement: Experimental support for threading on Linux/PPC.
43 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
44 * bug fix: EXPT signals an error if first argument is a zero and second
45 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
46 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
47 (lp#576594, thanks to Roman Marynchak)
48 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
49 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
51 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
52 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
53 cached, leading to many fewer expensive calls to
54 COMPUTE-APPLICABLE-METHODS.
55 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
56 CLASS argument, search for and call an appropriate optimized ctor function
58 * bug fix: WRITE always returns the correct value.
60 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
61 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
62 * bug fix: Name conflicts between symbols passed as arguments to a single
63 call to IMPORT no longer add multiple symbols with the same name to the
64 package (detectable via DO-SYMBOLS).
65 * bug fix: support building without the dlshim on darwin x86 and x86-64
67 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
69 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
70 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
72 * bug fix: linkage-table entries on PPC now no longer overflow their
73 space allocation (potentially causing crashes if they are written out
75 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
76 platforms, preventing the GC from seeing stale pointers on the control
77 stack in subsequent GCs (which would, and does, break invariants).
78 * bug fix: 32-bit unicode external formats now work on big-endian systems.
79 * bug fix: Literal characters with code points greater than about 32767
80 now work on PPC UNICODE builds.
81 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
82 high order bits are explicitly cleared out. In some contrived situations,
83 this could lead to wrong results in mixed real/complex float arithmetic.
84 * bug fix: Fix function/macro redefinition warnings when building with
85 clisp. (lp#576787, thanks to Josh Elsasser)
86 * new platform: experimental support for ppc/openbsd (thanks to Josh
88 * bug fix: Floating-point traps now work on ppc/linux.
90 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
91 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
92 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
93 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
94 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
95 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
97 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
98 contain additional data structures and tools for concurrent programming;
99 at the moment it contains a lock-free queue, and a lock-free mailbox
101 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
102 GET-MUTEX but takes &key rather than &optional parameters. Also added
103 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
105 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
106 SB-THREAD:WAIT-ON-SEMAPHORE.
107 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
109 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
110 conditions to defer the deadline for forever.
111 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
113 * enhancement: errors from NO-APPLICABLE-METHOD and
114 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
115 generic function call.
116 * enhancement: SB-BSD-SOCKET improvements
117 ** sockets and socket streams now have a more informative printed
118 representation based on the corresponding SOCKET-NAME and
120 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
122 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
123 CL:CLOSE when appropriate, and no longer disassociates the stream
124 from the socket if close failed. (lp#543951)
125 * improvements to the instrumenting profiler
126 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
127 ** optimization: counters no longer use locks for the overflow mode.
128 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
129 incurred an off-by-one miscount.
130 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
131 * enhancement: improved DEFMETHOD pretty-printing.
132 * enhancement: perform range reduction when arguments are too large for
133 x87's transcendentals (instead of returning 0). (lp#327192)
134 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
135 some of CL-PPCRE's macros. (lp#570079)
136 * enhancement: our machine code is slightly less hostile to valgrind on
138 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
139 to Robert Swindells and Aleksej Saushev)
140 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
141 * bug fix: a rare case of startup-time page table corruption.
142 * bug fix: a semaphore with multiple waiters and some of them unwinding due
143 to timeouts could be left in an inconsistent state.
144 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
145 * bug fix: misoptimization of multiplication by one in
146 (SB-C::FLOAT-ACCURACY 0) policies.
147 * bug fix: miscounts in SB-PROFILE.
148 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
149 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
150 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
151 up itself" (March 2010) for further details.
152 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
153 against length of the list if the element is found before the specified
154 END is reached. (thanks to Alec Berryman, lp#554385)
155 * bug fix: errors signalled during package graph modification no longer
156 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
157 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
158 :SB-DOC feature. (lp#552564)
159 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
160 * bug fix: more robust runtime executable path detection. (lp#375549)
161 * bug fix: GCD always returns positive values. (lp#413680)
162 * bug fix: Converting division to multiplication by reciprocal handles
164 * bug fix: We were too eager in eliding range reduction tests on x87.
165 The maximal magnitude is 2^63, not 2^64.
166 * bug fix: Transforms for TRUNCATE don't die when the result is completely
168 * bug fix: Maybe restore buildability on Alpha.
169 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
171 * bug fix: RANDOM-STATE can be printed readably again.
172 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
173 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
174 types) could result in type mismatches during compilation.
176 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
177 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
178 stack frame thrown from.
179 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
180 compiler optimization qualities inside dynamic extent of its body.
181 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
182 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
184 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
185 constraint propgation, allowing better compilation eg. when used to
186 access structures with WITH-SLOTS. (lp#520366)
187 * optimization: the compiler is now more aware of the type of the underlying
188 storage vector for multidimensional simple arrays resulting in better code
189 for accessing such arrays.
190 * optimization: passing NIL as the environment argument to TYPEP no longer
191 inhibits optimizing it. (lp#309788)
192 * optimization: more efficient register usage when handling single-float
193 arguments on x86-64. (thanks to Lutz Euler)
194 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
195 pre-allocated temporary vectors. (lp#496249)
196 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
197 in :INITIAL-CONTENTS. (lp#523612)
198 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
199 functions. (lp#524707)
200 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
201 WITH-SLOTS usages during compilation.
202 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
203 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
204 all x86oid platforms with :UD2-BREAKPOINTS target feature.
205 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
206 instruction (tested on x86oid linux with ud2-breakpoints).
207 * bug fix: slam.sh now works on win32.
208 * bug fix: better differences of numeric types. (lp#309124)
209 * bug fix: arrays declared intersection and union types can have their
210 upgraded element type derived. (lp#316078)
211 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
212 threads started during profiling. (lp#472499)
213 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
215 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
216 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
217 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
218 values instead of signaling an error. (lp#309093)
219 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
221 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
222 declarations (lp#497321)
223 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
224 and failed to detect circular lists (lp#452008)
225 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
227 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
228 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
229 due to it, so that handlers can run.
230 * bug fix: reparsing undefined types if they have become defined since
232 * bug fix: missing &REST type in a proclamation for a function with both
233 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
234 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
235 expanded calls (lp#542174)
236 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
237 than just at toplevel form.
239 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
240 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
241 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
242 but work on type specifiers.
243 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
244 to name a type specifier.
245 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
246 specifier is valid where "valid" basically means "would be accepted as
247 second argument of TYPEP".
248 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
249 returns the function's declared, or derived FTYPE.
250 * new feature: SB-POSIX now supports accessing the d_ino member of
251 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
252 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
253 provide for seeding a RANDOM-STATE object with user-provided data or
254 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
255 attempt to initialize the returned state from the operating system's
256 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
257 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
258 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
259 * bug fix: Fix grammar and style issues for the docstrings of
260 printer-related variables and functions. (Thanks to mon_key; launchpad
262 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
264 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
265 in a row even though a handler defered the deadline long into the
267 * bug fix: A deadline handler was run without interrupts enabled for a
268 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
269 in infinitely spinning, non-killable threads.
270 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
271 before reaching the erring stack frame.
272 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
273 real power. (launchpad bug lp#525949)
274 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
275 GENCGC platforms. (launchpad bug lp#529014)
276 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
277 (launchpad bug lp#525916)
278 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
279 (Thanks to Robert Goldman)
281 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
282 * optimization: ROUND with a single single-float or double-float argument
283 is properly inlined when possible.
284 * optimization: Slightly better code is generated for integer<->float
285 conversions and for single-float<->double-float conversions on x86-64.
286 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
287 code for 32-bit and 64-bit rotations on x86-64.
288 * bug fix: The install script changes the ownership of directories as well
289 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
290 launchpad bug lp#508485)
291 * bug fix: TRUNCATE with a single single-float or double-float argument is
292 properly inlined when possible. (launchpad bug lp#489388)
293 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
294 no longer causes a compiler error on x86 and ppc.
295 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
296 always relative to *READTABLE* rather than the passed argument.
298 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
299 * minor incompatible change: threading support is now enabled by default
301 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
303 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
304 are now caught and reported just like errors during macroexpansion.
305 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
306 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
307 * enhancement: ASDF systems can now depends on SB-QUEUE.
308 * fixes and improvements related to Unicode and external formats:
309 ** bug fix: error handling and restart usage in the ucs-2 external format
311 ** there is now an implementation of the ucs-4 external format.
312 ** the utf-16 and utf-32 external formats are supported.
313 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
314 in the environment. setenv() and unsetenv() are also provided. (reported by
315 Fare Rideau; launchpad bug lp#460455)
316 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
317 loading. This ensures sensible errors for .FASL files from other
318 implementations on case-insensitive filesystems. (reported by Willem
319 Broekema; launchpad bug lp#489417)
320 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
321 Willem Broekema; launchpad bug lp#489698).
322 * bug fix: some minor code rearrangements to reenable warning-free building
323 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
324 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
326 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
329 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
330 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
331 * improvement: support O_LARGEFILE access to files larger than 2GB on
332 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
333 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
334 definitions for methods specializing on the passed class itself.
335 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
336 definitions for methods specializing on the passed class itself, or on
338 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
339 about itself during the build (e.g. for M-? in Slime), if this flag is
340 enabled in customize-target-features.lisp. This will increase the core
341 size by about 5-6mb, though, so it's mostly interesting to SBCL
343 * new feature: various GENCGC tuning parameters have been experimentally
344 documented and exported from SB-EXT. See documentation for details.
345 * fixes and improvements related to Unicode and external formats:
346 ** the Unicode character database has been upgraded to the
347 Unicode 5.2 standard, giving names and properties to a number of new
348 characters, and providing a few extra characters with case
350 ** improvement: restarts for providing replacement input/output on coding
351 errors for fd-stream external formats.
352 ** improvement: where :<encoding> is a keyword corresponding to an
353 external format the system supports, it is now possible to specify
354 (:<encoding> :replacement <character>) as an external format which will
355 automatically substitute <character> on encoding or decoding errors for
356 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
358 ** improvement: the file streams underlying the standard streams (such as
359 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
360 which uses the replacement mechanism to handle encoding errors,
361 preventing various infinite error chains and unrecoverable I/O
363 ** minor incompatible change: the utf-8 external format now correctly
364 refuses to encode Lisp characters in the surrogate range (char-codes
365 between #xd800 and #xdfff).
366 ** fix a typo preventing conversion of strings into octet vectors
367 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
369 ** fix a bug in the octet multibyte handling of decoding errors and the
370 USE-VALUE restart. (launchpad bug lp#314939)
371 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
372 restart on fd-stream decoding errors.
373 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
374 error is near the end of file.
375 ** fix a double-error case in unibyte octet conversions, when the first
376 use of USE-VALUE is ignored.
377 ** fix bugs in handling of undefined code points in unibyte encodings.
378 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
379 streams after an UNREAD-CHAR.
380 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
381 object is allocated in a boxed region of dynamic space.
382 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
383 fork with multiple Lisp threads running is made, instead of going
384 ahead with unpredictable consequences. (reported by Leslie Polzer)
385 * bug fix: uses of slot accessors on specialized method parameters within
386 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
387 error while finalizing the class. This fix may cause classes with slot
388 accessors to be finalized later than previously. (reported by Lars Rune
389 Nøstdal; launchpad bug lp#473699)
390 * bug fix: restore buildability on the MIPS platform. (regression from
391 1.0.30.38, reported by Samium Gromoff)
392 * bug fix: inspecting closures is less likely to fail with a type error.
393 * bug fix: no timer starvation when setting the system clock back.
394 (launchpad bug lp#460283)
395 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
396 standard pprint dispatch table as specified by CLHS.
397 * bug fix: give CLISP a hint about a type declaration to enable it to build
398 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
400 * bug fix: correctly dump literal objects in defaulting forms of arglists.
401 (reported by Attila Lendvai; launchpad bug lp#310132)
402 * bug fix: distinguish in type specifiers between arrays that might be
403 complex and arrays that are definitely complex. (launchpad bug lp#309129)
404 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
405 type. (reported by Levente Mészáros; launchpad bug lp#485972)
406 * bug fix: setting the value of a symbol-macro within a method in the
407 presence of type declarations works properly again. (reported by Iban
408 Hatchondo; launchpad bug lp#485019)
410 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
411 * optimization: faster FIND and POSITION on strings of unknown element type
412 in high SPEED policies. (thanks to Karol Swietlicki)
413 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
415 * improvement: better error signalling for bogus parameter specializer names
416 in DEFMETHOD forms (reported by Pluijzer)
417 * bug fix: DELETE-FILE once again works on logical pathnames (regression
419 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
421 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
422 removes previous default initargs (reported by Lars Rune Nøstdal and
424 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
425 lambda-lists. (reported by Peter Seibel)
426 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
427 correctly when starting from an executable core without saved runtime
428 options (reported by Faré Rideau, thanks to Zach Beane)
429 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
430 an optimization note instead. (reported by Martin Cracauer)
431 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
432 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
433 new process group if it doesn't need to share stdin with the sbcl
434 process. (thanks to Leslie Polzer)
435 * bug fix: SATISFIES could be misoptimized to refer to a local function.
436 (reported by Stanislaw Halik)
438 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
439 * improvement: stack allocation is should now be possible in all nested
440 inlining cases: failure to stack allocate when equivalent code is manually
441 open coded is now considered a bug.
442 * improvements related to Unicode:
443 ** the Unicode character database has been upgraded to the
444 Unicode 5.1 standard, giving names and properties to a number of new
445 characters, and providing a few extra characters with case
447 ** the system now recognizes and produces names for Unicode Hangul
449 ** the EBCDIC-US external-format is now supported for octet operations
450 (as well as for stream operations).
451 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
452 be used to output toplevel compile-time effects into a separate .CFASL
454 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
455 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
457 * optimization: TRUNCATE on known single- and double-floats is upto 25%
459 * optimization: division of floating point numbers by constants uses
460 multiplication by reciprocal when an exact reciprocal exists.
461 * optimization: multiplication of single- and double-floats floats by
462 constant two has been optimized.
463 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
464 sufficient type information is available. (thanks to Leslie Polzer)
465 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
466 known structure objects are as efficient as defstruct generated accessors.
467 * optimization: unused vector creation can now be optimized away.
468 * improvement: ASDF systems can now depends on SB-INTROSPECT.
469 * improvement: a STYLE-WARNING is signalled when a generic function
470 clobbers an earlier FTYPE proclamation.
471 * improvement: the compiler is able to track the effective type of
472 generic function across method addition and removal even in the
473 absence of an explicit DEFGENERIC.
474 * improvement: DESCRIBE now reports on symbols naming undefined
475 but assumed or declared function as well.
476 * improvement: recompilation of systems using SB-GROVEL now works
477 (thanks to Leslie Polzer)
478 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
479 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
481 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
482 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
483 well as user defined declaration names.
484 ** VARIABLE-INFORMATION is now aware of alien variables.
485 * improvement: improved address space layout on OpenBSD (thanks to Josh
487 * improvement: pretty-printing of various Lisp forms has been improved
488 (thanks to Tobias Rittweiler)
489 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
490 unused were deleted in safe code. (reported by John Fremlin)
491 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
493 * bug fix: some out-of-line array predicates were missing (reported by
495 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
497 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
498 (thanks to Larry D'Anna)
499 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
500 as well. (reported by Josh Elsasser)
501 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
502 leading to possible attempts to delete the same file twice. See docstring
503 on DELETE-FILE for details. (reported by John Fremlin)
504 * bug fix: DELETE-FILE once again deletes the file named by the pathname
505 designator argument, rather than its truename. (reported by Luis
507 * bug fix: the low-level debugger had 32-bit assumptions and was missing
508 information about some array types. (thanks to Luis Oliveira)
509 * bug fix: moderately complex combinations of inline expansions could
510 be miscompiled if the result was declared to be dynamic extent.
511 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
512 form (+ <variable> <integer>) were miscompiled under certain
514 * bug fix: in some cases no compiler note about failure to stack allocate
515 was emitted, even if the objects were in fact heap allocated.
516 * bug fix: minor violation of "otherwise inaccessible" rule for stack
517 allocation could cause objects users might reasonably expect to
518 be heap allocated to be stack allocated.
519 * bug fix: DESCRIBE signalled an error for generic functions under
520 certain circumstances. (thanks to Leslie Polzer)
521 * bug fix: Fixed spelling of an error message.
523 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
524 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
525 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
526 of SB-THREAD:THREAD-ERROR-THREAD.
527 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
528 * new feature: docstrings for local and anonymous functions are no longer
529 discarded. (thanks to Leslie Polzer)
530 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
531 values in other threads.
532 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
533 about object allocation.
534 * optimization: division of a real float by a complex float is implemented
535 with a specialised code sequence.
536 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
537 keywords is an order of magnitude faster.
538 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
539 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
540 methods, and similarly for non-standard metaclass classes as long as there
541 are no methods additional on MAKE-INSTANCE.
542 * optimization: more efficient type-checks for FIXNUMs when the value
543 is known to be a signed word on x86 and x86-64.
544 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
545 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
547 * optimization: compiler is smarter about delegating argument type checks to
549 * optimization: several character functions are now compiled somewhat more
550 efficiently. (reported by Lynn Quam)
551 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
552 * improvement: less unsafe constant folding in floating point arithmetic,
553 especially for mixed complex/real -float operations.
554 * optimization: constant double and single floats are stored in native
555 unboxed format on x86[-64].
556 * optimization: smarter code for arithmetic operations with constant floats,
557 complex floats, or integers on x86[-64].
558 * optimization: smarter code for conjugate/multiplication of float complexes
559 and abs/negate of floats on x86-64.
560 * optimization: more efficient complex float and real float operations on
562 * improvement: complex float division is slightly more stable.
563 * improvement: DESCRIBE output has been reworked to be easier to read and
564 contains more pertinent information.
565 * improvement: failure to provide requested stack allocation compiler notes
566 provided in all cases (requested stack allocation not happening without a
567 note being issued is now considered a bug.)
568 * bug fix: SB-POSIX exports the documented types and functions
569 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
570 types. (reported by "abhi")
571 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
572 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
573 (thanks to Paul Khuong)
574 * bug fix: looping around HANDLER-CASE could silently consume stack space
575 on each iteration. (reported by "foobar")
576 * bug fix: better error signalling when calls to functions seeking elements
577 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
578 (reported by Tobias Rittweiler)
579 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
580 directory components now works as it used to. (various prolems reported by
581 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
582 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
583 (reported by Elliot Slaughter, thanks to Stas Boukarev)
584 * bug fix: bogus undefined variable warnings from fopcompiled references to
585 global variables. (thanks to Lars Rune Nøstdal)
586 * bug fix: foreign function names should now appear in backtraces on
587 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
588 * bug fix: SETF compiler macro documentation strings are not discarded
590 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
591 (thanks to Alex Plotnick)
592 * bug fix: SLEEP accepts large integer arguments, truncating them to
593 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
594 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
595 * bug fix: compiler notes for expensive slot type checks could be emitted
596 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
598 changes in sbcl-1.0.29 relative to 1.0.28:
599 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
600 https://bugs.launchpad.net/sbcl
601 Bugs can be reported directly there, or by sending email to
602 sbcl-bugs@lists.sourceforge.net
603 (no subscription required.)
604 * minor incompatible change: under weak type checking policy integer
605 types are weakened less aggressively.
606 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
607 allowed to return, which causes SBCL to quit with exit status 0. Previously
608 if the function returned with a small integer return value, that value
609 was accidentally reused as the exit status.
610 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
611 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
612 :HASH-FUNCTION argument. Refer to user manual for details.
613 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
615 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
616 microseconds since the Unix epoch on all platforms.
617 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
618 allows the compiler to safely elide boundedness checks for special
620 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
621 the symbol, prohibits both lexical and dynamic binding. This is mainly an
622 efficiency measure for threaded platforms, but also valueable in
624 * new feature: UNC pathnames are now understood by the system on Windows.
625 * optimization: the compiler uses a specialized version of FILL when the
626 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
628 * optimization: accesses to potentially non-simple arrays where element type
629 is known are 50% faster.
630 * optimization: compiler now generates faster array typechecking code.
631 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
633 * optimization: multidimensional array accesses in the absence of type
634 information regarding array rank are approximately 10% faster due to
635 open coding of ARRAY-RANK.
636 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
637 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
639 * optimization: result of call to VECTOR can now be stack allocated.
640 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
641 as long as the resulting array is one-dimensional and has a known
642 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
643 length of the list matches the known length of the vector does not
644 allocate the list as an intermediate step. Ditto for VECTOR and simple
646 * optimization: MAKE-ARRAY can now stack allocate in the presence of
647 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
648 known element type, and is known to be simple and one dimensional.
649 * improvement: SBCL now emits a compiler note where stack allocation was
650 requested but could not be provided (not in all cases, unfortunately)
651 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
652 * improvement: pretty-printing loop has been implemented properly. (thanks
653 to Tobias Rittweiler)
654 * documentation: CLOS slot typechecing policy has been documented.
655 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
656 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
657 pointer, leading to memory faults. (thanks to Bart Botta)
658 * bug fix: better floating point exception handling on x86/OpenBSD.
659 (thanks to Josh Elsasser)
660 * bug fix: exit status from QUIT when called under --script was lost
661 (reported by Hubert Kauker)
662 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
663 same implementation of FILL to initialize the array, even if a more
664 efficient one was available (reported by Stas Boukarev, thanks to
666 * bug fix: potential miscompilation of array stack allocation on x86 and
667 x86-64. (reported by Time Tossavainen)
668 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
669 result in their subforms being treated as top level forms. (reported by
671 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
672 than a machine register could leave garbage in the high bits of the
673 result register (bug 316325).
674 * bug fix: disable address space randomization Linux/x86-64 as well,
675 not just x86-64. (reported by Ken Olum)
676 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
677 generate incorrect code.
678 * bug fix: #201; type inference for CONS and ARRAY types could derive
679 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
680 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
681 could not be assigned to or bound with PROGV. (reported by Lorenz
683 * bug fix: the value of CL:- in the inspector was the previous expression
684 evaluated rather than the expression being evaluated.
685 * bug fix: constants can no longer be locally declared special.
686 * bug fix: signals delivered to threads started from foreign land (read:
687 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
688 thread by blocking all signals and resignalling.
689 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
690 from :INITFORM, if any.
692 changes in sbcl-1.0.28 relative to 1.0.27:
693 * a number of bugs in cross-compilation have been fixed, with the ultimate
694 result that building under (at least) clisp should be much more reliable.
695 * minor incompatible changes: echo-streams now propagate unread-char to the
696 underlying input stream, and no longer permit unreading more than one
698 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
699 frames, allowing for instance more reliable backtraces.
700 * improvement: the debugger REPL can now reference lexical variables
701 by name directly for code compiled with (DEBUG 3).
702 * improvement: errors from malformed declarations now have better source
703 paths associated with them. (thanks to Tobias Rittweiler)
704 * optimization: faster local calls on x86/x86-64
705 * bug fix: some error messages for out-of-bound array indexes confused the
706 index and the bound. (thanks to Stas Boukarev)
707 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
709 * bug fix: running regressions tests in shells without OSTYPE set now works.
710 (reported by Harald Hanche-Olsen)
711 * bug fix: more robust static space exhaustion signalling from
712 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
713 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
714 docstring away instead of storing it under names such as (LAMBDA (X)).
715 (reported by Leslie Polzer)
716 * bug fix: timers could go off in the wrong order, be delayed indefinitely
717 (thanks to Ole Arndt for the patch)
718 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
719 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
720 potentially-invalid effective methods in its cache.
721 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
722 instances as well (thanks to Paul Khuong)
723 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
724 SB-POSIX:WAITPID and their C equivalents.
725 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
727 changes in sbcl-1.0.27 relative to 1.0.26:
728 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
729 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
730 * improvement: the system either recovers from stack exhaustion or dies
731 properly as opposed to leaving the user uncertain of whether the handler
732 trampled on some random memory next to the stack or having to rely on
733 --lose-on-corruption (which is still a good idea to use in production
734 because stack exhaustion can happen in signal handlers which will likely
736 * bug fix: fix gc related interrupt handling bug on ppc (regression from
737 1.0.25.37, reported by Harald Hanche-Olsen)
738 * bug fix: work around signal delivery bug in darwin (regression from
739 1.0.25.44, reported by Sidney Markowitz)
740 * bug fix: fix ERROR leaking memory (reported by David Thompson)
742 changes in sbcl-1.0.26 relative to 1.0.25:
743 * incompatible change: an interruption (be it a function passed to
744 INTERRUPT-THREAD or a timer function) runs in an environment where
745 interrupts can be enabled. The interruption can use
746 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
747 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
748 potentially running out of stack. Keep in mind that in the absence
749 of WITHOUT-INTERRUPTS some potentially blocking operation such as
750 acquiring a lock can enable interrupts.
751 * incompatible change: GC-OFF and GC-ON are removed, as they were
752 always unsafe. Use WITHOUT-GCING instead.
753 * new feature: runtime option --disable-ldb
754 * new feature: runtime option --lose-on-corruption to die at the
755 slightest hint of possibly non-recoverable errors: running out of
756 memory, stack, alien stack, binding stack, encountering a memory
757 fault, etc. In the absence of --lose-on-corruption a warning is
759 * enhancement: detect binding stack exhaustion
760 * enhancement: detect alien stack exhaustion on x86/x86-64
761 * improvement: generally more stable and reliable interrupt handling
762 * improvement: there is a per thread interruption queue,
763 interruptions are executed in order of arrival
764 * improvement: a repeating timer reschedules itself when the it has
765 finished, but expiration times are spaced equally. If an
766 expiration time is in the past it will trigger after a short grace
767 period that may give a chance to other things to run.
768 * optimization: slightly faster gc on multithreaded builds
769 * optimization: faster WITHOUT-GCING
770 * bug fix: when JOIN-THREAD signals an error, do it when not holding
771 important locks so that the debugger/handler doesn't produce
772 recursive errors or deadlock.
773 * bug fix: real-time signals are not used anymore, so no more
774 hanging when the system wide real-time signal queue gets full.
775 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
777 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
778 * bug fix: fix random memory faults related to interrupts on alpha
779 * bug fix: fix random memory faults related to interrupts on sparc
780 * bug fix: fix deadlocks related to starting threads
781 * bug fix: fix deadlines on locks on futex platforms
782 * bug fix: restore errno in signal handlers
783 * bug fix: fix deadlocks related to hash tables
784 * bug fix: fix deadlocks in pcl
786 changes in sbcl-1.0.25 relative to 1.0.24:
787 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
788 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
789 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
790 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
791 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
792 better name and does not return values so stale on multiprocessor systems.
793 Also, HOLDING-MUTEX-P was added for about the only sane usage of
795 * improvement: unithread builds keep track of MUTEX-VALUE.
796 * improvement: reading from a TWO-WAY-STREAM does not touch the output
797 stream anymore making it thread safe to have a concurrent reader and
798 a writer, for instance, in a pipe.
799 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
800 arguments, making compiler-macros for SETF-functions able to inspect
801 their constant arguments.
802 * improvement: COMPILE-FILE reports times with millisecond accuracy
803 (thanks to Luis Oliveira)
804 * optimization: CHAR-CODE type derivation has been improved, making
805 TYPEP elimination on subtypes of CHARACTER work better. (reported
806 by Tobias Rittweiler, patch by Paul Khuong)
807 * bug fix: setting alien structure fields of type struct by value now
808 computes the right offset for the memory copy.
809 * bug fix: compilation problem involving inlined calls to aliens with
810 result type VOID. (reported by Ken Olum)
811 * bug fix: #235a; sequential inline expasion in different policies no
812 longer reuses the functional from the previous expansion site.
813 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
814 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
815 * bug fix: named ENUMs in multiply-referenced alien record types no longer
816 cause an implied type redefinition. Regression from 1.0.21.29.
817 * bug fix: sign-extension of small signed return values now works with C
818 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
819 * improvements to the Windows port:
820 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
821 Westfold, thanks to Rudi Schlatte)
823 changes in sbcl-1.0.24 relative to 1.0.23:
824 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
825 vector of a multidimensional SIMPLE-ARRAY.
826 * new feature: the system now signals a continuable error if standard
827 readtable modification is attempted. (thanks to Tobias Rittweiler)
828 * new feature: DIRECTORY has been extended with a non-standard keyword
829 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
830 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
831 has been robustified and documented better. (thanks to Robert Goldman)
832 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
833 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
834 * tradeoff: constant FORMAT control strings are now compiled unless
835 SPACE > SPEED (previously only when SPEED > SPACE.)
836 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
838 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
840 * bug fix: lexical type declarations are now correctly reported by
841 SB-CLTL2. (reported by Larry D'Anna)
842 * bug fix: STRING-TO-OCTETS did not handle :START properly when
843 using UTF-8 as external format. (thanks to Luis Oliveira)
844 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
845 are signalled correctly. (thanks to Stas Boukarev)
846 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
847 designator. (thanks to Tobias Rittweiler)
848 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
849 designator, and returns T instead of the function. (thanks to
851 * bug fix: direct superclasses of STANDARD-CLASS and
852 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
853 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
854 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
855 when no class with the named slot yet exists no longer causes a
856 compile-time style-warning.
857 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
858 in safe code. (reported by Didier Verna)
859 * bug fix: #430; nested structure constructors can stack allocate.
860 * bug fix: on some 64-bit platforms dynamic space size was truncated
861 to #xffff0000 bytes. (reported by Benjamin Lambert)
862 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
863 REPL unusable. (reported by Daniel Herring)
864 * bug fix: return values of READ-SEQUENCE did not take :START into
865 account on file streams, regressions since 1.0.12.22. (reported by
866 Thomas Russ, patch by Paul Khuong)
867 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
868 method specializer used to confuse permuation vector optimization.
869 * bug fix: system inserted bogus implicit type declarations for local
870 special variables in DEFMETHOD bodies.
871 * bug fix: #354; duplicated frames in backtraces due to
872 non-tail-call-optimized XEPs to functions with return type NIL
874 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
875 initializes structure object slots according to DEFSTRUCT initforms,
876 and DEFSTRUCT forms :INCLUDEind structure classes defined using
877 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
878 (reported by Bruno Haible and Stephen Wilson)
879 * bug fix: #395; fill-pointer output streams used now support
880 element-type BASE-CHAR as well.
881 * bug fix: compiler error when attempting to derive return value of
882 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
884 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
886 * bug fix: Mac OS X binaries should now be portable between Leopard
889 changes in sbcl-1.0.23 relative to 1.0.22:
890 * enhancement: when disassembling method functions, disassembly
891 for the associated fast function is also produced.
892 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
894 * optimization: printing with *PRINT-PRETTY* true is now more
895 efficient as long as the object being printed doesn't require
896 special handling by the pretty printer.
897 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
898 now interact correctly with type declarations.
899 * partial bug fix: PCL detects infinite recursion during wrapper
900 validation. (thanks to Attila Lendvai)
901 * bug fix: #426; nested function calls are inlined properly.
902 Previously if FOO was an inline function, in calls of the form
903 (FOO (FOO ...)) the outer call was not inlined.
904 * bug fix: long long arguments passed in registers to alien
905 functions on PowerPC Linux and NetBSD are now handled correctly
906 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
908 changes in sbcl-1.0.22 relative to 1.0.21:
909 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
910 for the shared object in the current directory, but passes the native
911 namestring of the designated pathname to the operation system's shared
912 object loading function as-it.
913 * minor incompatible change: --disable-debugger toplevel option now takes
914 effect before processing of initialization files and --eval or --load
916 * new feature: new commandline argument: --script, which supports
917 shebang lines. See documentation for details. (based on work by
919 * new feature: SAVE-LISP-AND-DIE can save current values of
920 --dynamic-space-size and --control-stack-size in the executable core,
921 causing it to skip normal runtime option processing. See documentation
922 for details. (thanks to Zach Beane)
923 * enhancement: inoccous calls to EVAL or generic functions dispatching
924 on subclasses of eg. STREAM no longer cause compiler notes to appear.
925 * enhancement: the system no longer resignals errors from --load and
926 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
927 associated with the original error to be lost. (thanks to Ariel
929 * enhancement: :DONT-SAVE keyword argument has been added to
930 LOAD-SHARED-OBJECT for controlling interaction with
931 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
932 the effects of an earlier LOAD-SHARED-OBJECT call.
933 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
934 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
935 provided. (reported by Cedric St-Jean)
936 * bug fix: circularity handling in the reader did not treat raw
937 structure slots correctly. (reported by Cedric St-Jean)
938 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
939 file descriptors when there were none.
940 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
941 was broken. (reporteed by Willem Broekema)
942 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
943 pathnames without a directory.
944 * bug fix: COMPILE-FILE did not warn about undefined variable
945 references at toplevel, and LOAD of the resulting fasl did
947 * bug fix: functions with non-required arguments used to end up with
948 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
949 * bug fix: redefining a function with non-required arguments didn't
950 update the system's knowledge about its call signature properly.
951 * bug fix: fixed #431; incompatible alien record type redefinitions
952 are detected and handled. (reported by Neil Haven)
953 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
954 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
956 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
957 after alien stack frames.
958 * bug fix: strings passed to mk{s,d}temp lacked null termination
960 changes in sbcl-1.0.21 relative to 1.0.20:
961 * new feature: the compiler is able to track the effective type of a
962 generic function across method addition and removal.
963 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
964 appropriately typed structure slots without locking.
965 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
966 information like those gathered by TIME using a programming-friendly
968 * new feature: TIME reports time taken even if the form performs a
969 non-local transfer of control.
970 * enhancement: reduced conservativism on GENCGC platforms: on
971 average 45% less pages pinned (measured from SBCL self build).
972 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
973 mutate constant symbols or violate declaimed type of the symbol.
974 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
975 sleeping on the semaphore in heavily contested semaphores.
976 * bug fix: semaphores and condition variables were not interrupt
978 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
979 owned by other threads anymore.
980 * bug fix: FIND on lists called KEY outside the specified
981 subsequence. (reported by budden)
982 * bug fix: LOG doesn't use single-float intermediate results when
983 given mixed integer and double-float arguments, leading to better
984 precision. (reported by Bob Felts)
985 * bug fix: LOG with base zero returned values of inconsistent type.
987 changes in sbcl-1.0.20 relative to 1.0.19:
988 * minor incompatible change: OPTIMIZE qualities
989 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
990 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
991 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
992 * documentation: some slot access efficiency guidelines have been
993 added to the user manual.
994 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
995 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
996 as ASSOC and MEMEBER.
997 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
998 to more efficient EQ-comparison versions more often.
999 * optimization: enhanced derivation of DOLIST iteration variable type
1001 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1003 * optimization: runtime lookup of function definitions can be
1004 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1005 * optimization: compiler is able to derive the return type of
1006 (AREF (THE STRING X) Y) as being CHARACTER.
1007 * optimization: CLRHASH on empty hash-tables no longer does pointless
1008 work. (thanks to Alec Berryman)
1009 * optimization: REPLACE deftransforms don't punt when :START1 or
1011 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1012 no longer emits a code deletion note. (reported by Andrew
1014 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1015 functions with an odd number of &OPTIONAL arguments, a &REST
1016 argument, and one or more &KEY arguments at the call site.
1017 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1018 arguments appeared at call sites as well.
1019 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1020 READ-LINE &co can no longer read from them afterwards. (reported
1022 * bug fix: fixed #427: unused local aliens no longer cause compiler
1023 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1025 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1026 alien-stack leakage. (reported by Andy Hefner)
1027 * bug fix: PROGV signals an error when an attempt to violate declared
1028 type of a variable or bind a constant is made.
1029 * bug fix: SET signals an error when an attempt to violate declared
1030 type of a variable is made.
1031 * bug fix: restart computation during the execution of a restart
1032 test function no longer causes infinite recursion. (reported by
1034 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1035 signals an error. (thanks to Pierre Mai)
1036 * bug fix: EXPORT left symbol unexported in conflict situations.
1037 (thanks to Michael Weber)
1038 * bug fix: correctly handle name conflicts involving CL:NIL.
1039 (thanks to Michael Weber)
1040 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1041 conflicts arising from USEing package with conflicting symbols
1042 correctly. (thanks to Michael Weber)
1044 changes in sbcl-1.0.19 relative to 1.0.18:
1045 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1046 warnings that go otherwise unhandled will be muffled if they are
1047 of the type that's the value of this variable.
1048 * optimization: stack allocation is slightly more efficient on x86
1050 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1051 where a raw slot always is initialized using the initform whose
1052 type is not know sufficiently well a compile-time are now compiled
1053 correctly. (reported by John Morrison)
1054 * bug fix: compiler no longer makes erronous assumptions in the
1055 presence of non-foldable SATISFIES types.
1056 * bug fix: stack analysis missed cleanups of dynamic-extent
1057 arguments in non-let-converted calls to local functions.
1058 * improvements to the Windows port:
1059 ** adjusted address spaces for building on both Win32 and
1060 Win64. (thanks for John Connors)
1061 * fixed some bugs revealed by Paul Dietz' test suite:
1062 ** interval arithmetic during type derivation used inexact integer
1063 to single-float coercions.
1064 ** arithmetic operations involving large integers and single
1065 floats give the same results in compiled and interpreted code.
1066 ** deriving the result type of COERCE no longer signals an error
1067 if the derived type of the second argument is a MEMBER type
1068 containing invalid type specifiers.
1069 ** ADJOIN with constant NIL as second argument works correctly.
1070 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1072 changes in sbcl-1.0.18 relative to 1.0.17:
1073 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1074 profiles only the current thread.
1075 * minor incompatible change: changes to SYMBOL-VALUE of constants
1076 defined with DEFCONSTANT now signal an error.
1077 * enhancement: SB-SPROF now has support for wallclock profiling,
1078 and is also able to profile specific threads. REPORT output
1079 has also additional sorting options.
1080 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1082 * optimization: structure allocation has been improved
1083 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1084 ** out of line constructors are ~10% faster.
1085 ** inline constructors are ~15% faster.
1086 ** inline constructors are capable of dynamic extent allocation
1087 (generally on x86 and x86-64, in some cases on other platforms
1089 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1091 * optimization: file compiler is now able to coalesce non-circular
1092 lists, non-base strings, and bit-vectors. Additionally, constants
1093 are never referenced through SYMBOL-VALUE at runtime.
1094 * optimization: code defining methods on PRINT-OBJECT (and other
1095 generic functions in the COMMON-LISP package) now loads faster.
1096 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1098 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1099 fasl is now deleted. (reported by Attila Lendvai)
1100 * bug fix: READ-LINE always returned NIL for the last line in files.
1101 (reported by Yoshinori Tahara)
1102 * bug fix: more accurate disassembly annotations of foreign function
1103 calls. (thanks to Andy Hefner)
1104 * bug fix: trimming non-simple strings and non-string string
1105 designators when the there is nothing to trim works properly.
1106 (thanks to James Knight)
1107 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1108 (thanks to Travis Cross)
1109 * fixed some bugs revealed by Paul Dietz' test suite:
1110 ** NIL is a valid function name (regression at 1.0.13.38)
1111 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1112 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1113 fill pointers properly (regression at 1.0.12.23)
1114 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1115 displacement indices properly (regression at 1.0.12.23)
1117 changes in sbcl-1.0.17 relative to 1.0.16:
1118 * temporary regression: user code can no longer allocate closure
1119 variable storage on stack, due to bug 419 without explicitly
1120 requesting it. Please consult sbcl-devel for advice if you need to
1121 use this feature in the meanwhile.
1122 * new feature: runtime argument --control-stack-size can be used to
1123 adjust thread default control stack size.
1124 * enhancement: improved TIME output
1125 ** all times are reported using the measured accuracy (milliseconds
1126 for real and GC times, microseconds for everything else.)
1127 ** processor cycle counts on x86 and x86-64.
1128 ** interpreted forms are counted for both evaluator modes.
1129 ** number of lambdas converted by the compiler is reported.
1130 ** CPU percentage report (computed from real and total run time.)
1131 ** more comprehensive run time reporting, using a condenced format
1132 ** interperted form, lambda, and page fault counts are omitted
1134 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1136 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1137 * optimization: two argument forms of LAST are upto ~10% faster
1138 in normal SPEED policies.
1139 * optimization: NCONC no longer needs to heap cons its &REST list
1140 in normal SPEED policies.
1141 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1142 to Sidney Markowitz)
1143 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1144 regression since 1.0.9.1. (thanks to Eric Marsden)
1145 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1146 since 1.0.15.36. (thanks to Paul Khuong)
1147 * bug fix: LAST when always returned the whole list when given a bignum
1148 as the second argument.
1149 * bug fix: dynamic extent allocation of nested lists and vectors
1150 could leak to otherwise accessible parts.
1151 * bug fix: invalid optimization of heap-allocated alien variable
1153 * bug fix: fasl header checking is less vulnerable to different
1154 platform word lengths.
1155 * bug fix: more correct assembler syntax for GNU binutils
1156 2.18.50.0.4 support. (thanks to Marijn Schouten)
1157 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1159 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1160 declarations) successfully. (reported by Attila Lendvai)
1162 changes in sbcl-1.0.16 relative to 1.0.15:
1163 * minor incompatible change: revert the changes to sb-posix's error
1164 signaling added in 1.0.14.
1165 * minor incompatible change: change PROBE-FILE back to returning
1166 NIL whenever we can't get a truename, as was the case before 1.0.14.
1167 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1168 inherits from ERROR instead of just CONDITION.
1169 * new feature: SB-INTROSPECT can provide source locations for instances
1170 as well. (thanks to Tobias Rittweiler)
1171 * optimization: binding special variables now generates smaller code
1172 on threaded platforms.
1173 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1174 and cases where no :TEST is given but the compiler can infer that
1175 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1176 * optimization: better LOGNOT on fixnums.
1177 * optimization: modular arithmetic for a particular requested width
1178 is implemented using a tagged representation unless a better
1179 representation is available.
1180 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1181 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1182 for wellformedness and returns a specialized vector. (reported by
1183 Francois-Rene Rideau)
1184 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1185 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1186 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1187 unscheduling timer at the same time as another timer fires.
1188 * bug fix: don't reschedule timers for dead threads.
1189 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1190 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1191 bogus errors if select() was interrupted.
1192 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1194 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1195 * enhancement: cleaner backtraces for interactive interrupts, as
1196 well as other cases where the interesting frames used to be
1197 obscured by interrupt handling frames.
1198 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1199 now supported, and tracing a whole package using (TRACE "FOO") now
1200 traces SETF-functions as well.
1201 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1202 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1203 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1204 * unreadably printed representation of hash-tables now includes
1206 * bug fix: partially fixed #188: type propagation from assignments
1207 is now more efficient.
1208 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1209 'DOUBLE-FLOAT) are not flushable.
1210 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1211 full address of the object, and none of the tag bits.
1212 * bug fix: readably printing hash-tables now respects other printer
1213 control variables. (reported by Cedric St-Jean)
1214 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1215 keyword with MAKE-HASH-TABLE.
1216 * bug fix: export SB-POSIX:MKSTEMP.
1217 * bug fix: SORT was not interrupt safe.
1218 * bug fix: XREF accounts for the last node of each basic-block as
1220 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1221 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1222 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1223 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1224 create obsolete instances in the case of redefinition or
1225 obsoletion of a superclass. (thanks to Andy Hefner)
1226 * bug fix: Support for the Alpha architecture has been revived; it had
1227 suffered somewhat from lack of maintenance since sbcl-1.0.
1228 * improvements to the Windows port:
1229 ** The system detects the codepage to use at startup, instead of
1230 using the value from the saved core. (thanks to Kei Suzuki)
1232 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1233 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1234 (see documentation for details.)
1235 * revived support for OpenBSD (contributed by Josh Elsasser)
1236 * partially fixed bug #108: ROOM no longer suffers from occasional
1237 (AVER (SAP= CURRENT END)) failures.
1238 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1239 bodies no longer cause a WARNING to be signalled. (reported by
1241 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1242 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1243 the bug in TRUNCATE.) (reported by Michael Weber)
1244 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1245 no samples. (reported by Andy Hefner)
1246 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1247 no longer appear as (NIL ...) frames in backtraces.
1248 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1249 is now actually exported from SB-EXT as documented. (reported by
1251 * bug fix: sb-aclrepl now correctly understands how to inspect
1252 single-floats on 64-bit platforms where single-floats are not boxed.
1253 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1254 yet been finalized. (reported by Levente Meszaros)
1255 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1256 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1257 SBCL-specific optimize qualities.
1259 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1260 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1261 an executable in the search path, and does so in the child
1262 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1263 been removed; it can be found in the CVS history, for somebody who
1264 needs that search behavior (see the manual).
1265 * minor incompatible change: compiler policy re. weakening type
1266 checks has changed: now type checks are weakened only if SAFETY < 2
1268 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1269 unparsing of directory pathnames as files. Analogously,
1270 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1271 filename to parse into a directory pathname.
1272 * enhancement: implicit generic function creation now signals a
1273 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1274 users can bind handlers for and muffle around calls to LOAD.
1275 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1276 to be used (using the default stream external format), and allows
1277 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1278 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1279 strings and vectors whose element-type or simplicity is not fully
1280 known at compile-time.
1281 * optimization: STRING-TRIM and related functions no longer allocate
1282 a new string when no trimming needs to be performed. These functions
1283 are also faster than before when the input string has been declared
1285 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1286 * optimization: READ-LINE is significantly faster for files containing
1288 * optimization: non-open coded uses of character comparison operators
1289 (e.g. char=) no longer cons when called with more than one parameter
1290 on platforms supporting dynamic-extent allocation.
1291 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1292 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1293 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1295 * bug fix: some sequence functions elided bounds checking when
1297 * bug fix: too liberal weakening of union-type checks when SPEED >
1299 * bug fix: more bogus fixnum declarations in ROOM implementation
1302 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1303 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1304 :SYNCHRONIZED argument, which makes the hash-table safe for
1305 concurrent accesses (but not iteration.) See also:
1306 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1307 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1308 * optimization: CONCATENATE on strings is an order of magnitude faster
1309 in code compiled with (> SPEED SPACE).
1310 * optimization: SUBSEQ is ~50% faster on lists.
1311 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1312 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1313 END is smaller then START.
1314 * bug fix: SB-PROFILE will no longer report extra consing for nested
1315 calls to profiled functions.
1316 * bug fix: ROOM implementation had bogus fixnum declarations which
1317 could cause type-errors when calling ROOM on large images.
1318 * bug fix: if file compilation is aborted, the partial fasl is now
1319 deleted, and COMPILE-FILE returns NIL as the primary value.
1320 * bug fix: number of thread safety issues relating to SBCL's internal
1321 hash-table usage have been fixed.
1322 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1323 be returned from its body when the values were being returned
1324 using unknown-values return convection and the W-P-O was wrapped
1325 inside an UNWIND-PROTECT.
1326 * bug fix: sb-posix should now compile again under Windows, enabling
1327 slime to work again.
1329 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1330 * incompatible change: hash-table accessor functions are no longer
1331 automatically protected by locks. Concurrent accesses on the same hash-table
1332 from multiple threads can give inconsistent results or even corrupt the
1333 hash-table completely. Multi-threaded applications should do their own
1334 locking at the correct granularity. In the current implementation it is
1335 still safe to have multiple readers access the same table, but it's not
1336 guaranteed that this property will be maintained in future releases.
1337 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1338 and will signal an error at runtime.
1339 * enhancement: SB-THREAD package now exports a semaphore interface.
1340 * enhancement: CONS can now stack-allocate on x86 and
1341 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1343 * enhancement: nested lists can now be stack allocated on
1344 platforms providing stack allocation support.
1345 * enhancement: dynamic-extent support has been extended to support
1346 cases where there are multiple possible sources for the stack
1348 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1349 if the mutex is uncontested on Linux.
1350 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1351 as specified by the CLHS. (thanks to Tobias Rittweiler)
1352 * bug fix: NaN comparison now works on x86-64.
1353 * bug fix: CLOSE :ABORT T on a stream with pending output now
1355 * bug fix: instances of non-standard metaclasses using standard
1356 instance structure protocol sometimes missed the slot type checks
1358 * bug fix: known functions can be inlined in high-debug code.
1360 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1361 * minor incompatible change: the MSI installer on Windows no longer
1362 associates .lisp and .fasl files with the installed SBCL.
1363 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1364 on Windows. (thanks to Luis Oliviera)
1365 * new feature: SB-CLTL2 contrib module now implements
1366 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1367 * optimization: scavenging weak pointers is now more efficient,
1368 requiring O(1) instead of O(N) per weak pointer to identify
1369 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1370 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1371 method bodies using constant slot-names when the first argument is
1372 a specializer parameter for the method.
1373 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1374 names, when the class of the instance is a direct instance
1375 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1376 as slow as the constant slot-name case.)
1377 * optimization: member type construction is now O(N) instead
1379 * optimization: UNION and NUNION are now O(N+M) for large
1380 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1382 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1383 now more readable in environments like Slime which display it.
1384 (thanks to Tobias C. Rittweiler)
1385 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1386 was able to infer the correct argument type for the object on which
1387 the CAS operation was being performed.
1388 * bug fix: copy propagation interfered with parallel assignment
1389 semantics in local calls. (reported by Paul Khuong)
1390 * bug fix: the signed modular fixnum shift compiled to wrong code on
1391 x86 and x86-64. (spotted by a slight modification to some of
1394 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1395 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1396 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1397 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1399 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1400 and generic function now print the object identity for anonymous
1401 instances. (thanks to Attila Lendvai)
1402 * enhancement: as an extension to MOP, SBCL now supports SETF of
1403 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1404 (thanks to Attila Lendvai)
1405 * enhancement: sb-cover has an alternate annotation mode which puts
1406 the form annotations at the car of the form, instead of annotating
1407 it completely. The benefit of this mode is that it shows better
1408 which forms were instrumented by the compiler.
1409 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1410 by printer control variables. (reported by Dan Corkill)
1411 * bug fix: system leaked memory when delayed output was performed by
1412 the OS in smaller chunks then expected. (thanks to David Smith)
1413 * bug fix: system leaked memory when file streams were not closed
1415 * bug fix: large objects written to slow streams that were modified
1416 after the write could end up with the modified state written to
1417 the underlying file descriptor.
1418 * bug fix: multiple threads operating in parallel on the same stream
1419 could cause buffer-overflows.
1420 * bug fix: source location information is stored correctly
1421 (broken since 1.0.6). This bug would generally show up as the
1422 Slime debugger highlighting the wrong form when the sldb-show-source
1424 * bug fix: Branch forms are again annotated as branches in the sb-cover
1426 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1427 on x86-64. (reported by Gregory Vanuxem)
1428 * bug fix: EQUALP could return wrong results for structures with raw
1429 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1430 word). (reported by Vjacheslav Fyodorov)
1431 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1434 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1435 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1436 atomic compare-and-swap operations on threaded platforms.
1437 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1438 allows assigning a global minimum value to optimization qualities
1439 (overriding proclamations and declarations).
1440 * enhancement: closed over variables can be stack-allocated on x86
1442 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1444 * optimization: slot definition lookup is now O(1). This speeds up
1445 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1446 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1447 * optimization: ASSOC and MEMBER can now be open-coded for all
1448 combinations of keyword arguments when second argument is constant
1449 and SPEED >= SPACE. In other cases a specialized version is
1451 * bug fix: using obsoleted structure instances with TYPEP and
1452 generic functions now signals a sensible error.
1453 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1454 (reported by Kristoffer Kvello)
1455 * bug fix: backtrace construction is now more careful when making
1456 lisp-objects from pointers on the stack, to avoid creating bogus
1457 objects that can be seen by the GC.
1458 * bug fix: defaulting of values in contexts expecting more than 7
1459 variables now works on x86-64. (reported by Christopher Laux)
1460 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1462 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1463 as the property-list of a symbol.
1464 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1465 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1466 situations requested, are once again file-compileable. (reported
1469 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1470 * MOP improvement: support for user-defined subclasses of
1471 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1472 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1473 the expansion of DEFMETHOD, is responsible for generating a form
1474 which creates a list of specializers when evaluated. Additional
1475 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1476 debugging and introspective support.
1477 * minor incompatible change: the (unsupported) spinlock interface
1478 has changed: free spinlock now has the value NIL, and a held spinlock
1479 has the owning thread as its value.
1480 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1481 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1483 * enhancement: name of a socket-stream is now "a socket" instead of
1484 "a constant string".
1485 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1486 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1487 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1488 for generic functions. (Thanks to Tobias C. Rittweiler)
1489 * optimization: bignum printing speed has been improved by 20-40%
1490 (depending on the bignum size.)
1491 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1493 * bug fix: the cache used by the CLOS to store precomputed effective
1494 methods, slot offsets, and constant return values is now thread and
1496 * bug fix: generic function dispatch function updating is now thread
1497 and interrupt safe (in the sense that the known issues have been
1499 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1500 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1501 * bug fix: asdf systems with dependencies to the SB-POSIX or
1502 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1503 * bug fix: interrupt safety of applicable method computation has been
1506 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1507 * new contrib: sb-cover, an experimental code coverage tool, is included
1508 as a contrib module.
1509 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1510 significantly faster.
1511 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1512 produce more efficient code on x86-64 if the compiler can determine
1513 that (+ INDEX <constant>) does not require a bounds check and FOO
1514 has an element type at least 8 bits wide.
1515 * enhancement: a new, experimental synchronous timeout facility is
1516 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1517 * enhancement: when a symbol name conflict error arises, the
1518 conflicting symbols are always printed with a package prefix.
1519 (thanks to Kevin Reid)
1520 * enhancement: stepping is now once again supported on the SPARC and
1521 MIPS platforms. (It is also now more likely to work on CheneyGC
1523 * enhancement: sb-sprof can now also track and report accurate call
1525 * bug fixes: the treatment of non-standard subclasses of
1526 SB-MOP:SPECIALIZER is more correct.
1527 * incompatible change: PURIFY no longer copies the data from the
1528 dynamic space into the static and read-only spaces on platforms
1529 that use the generational garbage collector
1530 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1532 * bug fix: GC race condition occasionally resulting in crashes with
1533 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1535 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1537 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1538 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1539 * bug fix: an asynchronous interrupt could previously leave the
1540 system running with GC inhibited.
1541 * bug fix: a DECLARE form evaluated at top-level now causes an error
1542 rather than silently (or verbosely) returning NIL.
1543 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1544 result in a error being signalled due to source form lookup errors.
1545 (reported by Peter Graves)
1547 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1548 * incompatible change: removed writer methods for host-ent-name,
1549 host-ent-addresses -- changing the values did not update the DNS
1551 * minor incompatible change: changed experimental JOIN-THREAD interface
1552 * documentation: the manual now lists reader and writer methods
1553 in class slot documentation sections. (thanks to Richard M Kreuter)
1554 * documentation: unwinding from asyncronous events has been
1555 documented as unsafe.
1556 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1557 in multithreaded application code.
1558 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1559 platforms. (thanks to James Anderson for the optimization hint)
1560 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1562 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1563 variants no longer cons.
1564 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1565 their NOT- variants no longer cons.
1566 * optimization: EQUAL hash tables no longer use SXHASH for objects
1567 of all data types, but instead use an EQL hash for types for which
1568 EQUAL is the same as EQL.
1569 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1570 are significantly faster.
1571 * optimization: new STRING-OUTPUT-STREAM implementation is much
1572 faster for large outputs and conses 30% less on average.
1573 * enhancement: XREF information is now collected for references made
1574 to global variables using SYMBOL-VALUE and a constant argument.
1575 * enhancement: SIGINT now causes a specific condition
1576 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1577 * bug fix: FILE-POSITION used to signal an error in some cases where
1578 ANSI requires it to return NIL.
1579 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1580 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1581 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1583 * bug fix: bad type declaration in the CLOS implementation has
1584 been fixed. (reported by James Anderson)
1585 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1586 (thanks to Lutz Euler)
1587 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1588 required by the CLHS. (reported by Samium Gromoff)
1589 * bug fix: dead unbound variable references now signal an error.
1590 (reported by Marco Monteiro)
1591 * bug fix: / with an unused value was being deleted in safe code.
1592 (thanks to Marco Monteiro and Kevin Reid)
1593 * bug fix: number of characters that can be written onto a single
1594 line in a file is unlimited.
1595 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1596 been fixed by inhibiting interrupts for when GC is disabled.
1597 * bug fix: some interrupt safety issues with GETHASH, (SETF
1598 GETHASH), CLRHASH and REMHASH have been fixed.
1599 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1600 specifier no longer causes infinite recursion.
1601 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1602 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1603 * bug fix: an &environment argument with the correct variable information
1604 is passed to macros that are expanded during byte compilation.
1605 (reported by Samium Gromoff)
1606 * bug fix: a logic error was causing the hash function for bignums to
1607 have excessive amounts of collisions. (reported by Faré Rideau)
1608 * bug fix: modifying the contents of an array could change the return
1609 value of SXHASH on that array, which is only allowed for strings
1610 and bit vectors. (bug introduced in 0.9.16)
1611 * improvement: the x86-64/darwin port now passes all tests (except
1612 for the debugger tests) but should still be considered
1613 experimental until this is fixed.
1614 * improvement: a style-warning is signaled for CASE (etc) clauses with
1615 duplicate keys. (thanks to Kevin Reid)
1616 * improvement: macos/x86 and macos/x86-64 now use mach exception
1617 handlers for dealing with illegal instructions (for trapping and
1618 error handling) and memory protection violations (for GC).
1620 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1621 * new platform: experimental support for x86-64/darwin (MacOS).
1622 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1623 and getnameinfo sockets functions are used instead of gethostbyaddr
1624 and gethostbyname, on platforms where the newer functions are available.
1625 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1627 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1628 don't print the startup banner, but behave as if --noinform was passed
1629 as a command line argument. (thanks to Kevin Reid)
1630 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1631 * optimization: code using alien values with undeclared types is much faster.
1632 * optimization: the compiler is now able to open code SEARCH in more cases.
1633 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1634 * bug fix: using standardized COMMON-LISP special variables as loop
1635 variables no longer signals bogus package lock violations. (reported
1637 * bug fix: declaring local loop variables to be of a range-limited type
1638 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1639 (reported by Andras Simon)
1640 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1641 bugs remain on x86-64.)
1642 * bug fix: the #= and ## reader macros now interact reasonably with
1643 funcallable instances.
1644 * bug fix: type-checks for function arguments were compiled using the
1645 compiler policy settings of the wrong lexical environment (in 1.0.2
1647 * bug fix: SHADOW accepts characters as string designators, as required
1648 by the spec (thanks to Eric Marsden)
1649 * bug fix: fixed GC safety issues when foreign functions are called with
1650 non-base strings as arguments
1651 * bug fix: more consistent error output for fatal-compiler-warnings, like
1653 * bug fix: functions with proper names were showing up as NIL in
1654 backtraces (reported by Edi Weitz, regression in 1.0.2)
1656 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1657 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1658 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1659 produce more efficient code on the x86 if the compiler can determine
1660 that (+ INDEX <constant>) does not require a bounds check and FOO
1661 has an element type at least 8 bits wide.
1662 * bug fix: references to undefined variables are handled the same way
1663 in toplevel forms as in the normal compiler
1664 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1666 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1667 (thanks to Jon Buller)
1668 * improvement: faster compilation times for complex functions
1669 * improvement: added readlink support to SB-POSIX (thanks to Richard
1672 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1673 * improvement: experimental support for mach exception handling on
1674 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1676 * improvement: support for GBK external format.
1677 (thanks to Chun Tian (binghe))
1678 * improvement: the debugger now displays variables that have been closed
1679 over, in code compiled with (DEBUG 2) or higher
1680 * improvement: support for executable cores on NetBSD (thanks to
1682 * new feature: added a RESTART-FRAME debugger command
1683 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1684 be used to provide an implementation for FILE-POSITION on Gray streams
1685 (thanks to Eric Marsden)
1686 * new feature: add syslog, openlog and closelog support to SB-POSIX
1687 (thanks to Richard Kreuter)
1688 * optimization: the function call overhead in code compiled with
1689 a high DEBUG optimization setting is significantly
1690 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1691 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1692 (thanks to Tony Martinez)
1693 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1694 evaluated once (reported by Kevin Reid)
1695 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1696 works again (thanks to Kilian Sprotte)
1697 * bug fix: an error is signaled for tagbodies with duplicate tags
1698 (thanks to Stephen Wilson)
1699 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1700 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1701 stack frames from alien callbacks.
1702 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1703 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1704 65k pages (thanks to David Woodhouse)
1705 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1707 changes in sbcl-1.0.1 relative to sbcl-1.0:
1708 * new platform: FreeBSD/x86-64, including support for threading.
1709 * new feature: the compiler stores cross-referencing information
1710 about function calls (who-calls), macroexpansion (who-macroexpands)
1711 and special variables (who-binds, who-sets, who-references) for code
1712 compiled with (< SPACE 3). This information is available through the
1713 sb-introspect contrib.
1714 * new feature: users may subclass SEQUENCE, and have instances of
1715 these classes interoperate with standard Common Lisp functions if
1716 a number of methods are defined. (This feature is experimental
1717 and the interface subject to change based on feedback from SBCL
1718 users and the general community)
1719 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1720 x86/x86-64, rather than the previous fixed depth of 8
1721 * improvement: another pthread back-end of mutex "pthread-futex".
1722 * bug fix: non-ascii command-line arguments are processed correctly
1723 (thanks to Yaroslav Kavenchuk)
1724 * bug fix: non-required arguments were not passed correctly when a method
1725 defined using DEFMETHOD was called from a mop-generated method using
1726 CALL-NEXT-METHOD (reported by Pascal Costanza)
1727 * bug fix: recursion is now permitted in accessors through
1728 SLOT-UNBOUND. (reported by Pascal Costanza)
1729 * bug fix: an error was signaled at startup if the HOME environment
1730 variable was defined, but had an empty value (reported by Peter Van Eynde)
1731 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1732 signal a PROGRAM-ERROR, not a BUG.
1733 * bug fix: SB-POSIX:READDIR works when built with large file support.
1734 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1736 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1737 for better automatic indentation support. (thanks to Matt Pillsbury)
1738 * optimization: loading generic functions no longer takes O(n^2) time,
1739 proportional to the amount of methods in the generic function
1740 (reported by Todd Sabin and Jeremy Brown)
1741 * optimization: the FIND and POSITION family of sequence functions
1742 are significantly faster on arrays whose element types have been
1744 * improvements to the Windows port:
1745 ** Intermittent heap corruption problems have been fixed. (thanks
1746 to Alastair Bridgewater)
1747 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1749 ** Lisp is able to unwind foreign exception frames from alien
1750 callbacks. (thanks to Alastair Bridgewater)
1752 changes in sbcl-1.0 relative to sbcl-0.9.18:
1753 * improvement: experimental support for threading on FreeBSD/x86.
1754 (thanks to NIIMI Satoshi)
1755 * improvement: runtime option --dynamic-space-size can be used
1756 to set the size of the dynamic space reserved on startup.
1757 * improvement: floating point modes in effect are now saved in
1758 core, and restored on startup.
1759 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1760 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1761 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1762 threads are not running after *SAVE-HOOKS* have run.
1763 * improvement: writes to CLOS instance slots are type-checked in code
1764 compiled with (SAFETY 3)
1765 * improvement: floating-point exception handling on FreeBSD (thanks to
1767 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1768 (thanks to Zach Beane)
1769 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1771 * improvement: added support for the Shift-JIS external format.
1772 (contributed by NIIMI Satoshi)
1773 * improvement: callbacks are supported on Linux/PPC. (thanks to
1775 * bug fix: compiler bug triggered by a (non-standard) VALUES
1776 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1777 * bug fix: file compiler no longer confuses validated and already
1778 dumped structurres. (reported by Kaersten Poeck)
1779 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1780 fill-pointer signals a type-error as required. (thanks to
1782 * bug fix: disassemly of funcallable instances works.
1783 * bug fix: single stepping on PPC.
1784 * bug fix: fix thread-safety problems in the type system (generally
1785 manifesting as nonsensical errors like "STRING is a bad type specifier
1786 for sequences" or "The value 1 is not of type FIXNUM")
1787 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1788 (reported by Josip Gracin)
1789 * bug fix: an error is signaled for attempts to displace arrays with
1790 incompatible element types (thanks to Mario Mommer)
1791 * bug fix: more correct handling of wide characters in debug info
1792 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1793 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1794 and don't cause extra consing
1795 * optimization: MAP and MAP-INTO are significantly faster on vectors
1796 whose elements types have been declared.
1797 * Improvements to SB-SPROF:
1798 ** Support for allocation profiling
1799 ** Reduced profiling overhead, especially for long profiling runs
1800 * Improvements to the Windows port:
1801 ** floating point exceptions are now reported correctly.
1802 ** stack exhaustion detection works partially.
1803 ** more accurate GET-INTERNAL-REAL-TIME.
1804 ** better RUN-PROGRAM behaviour in case of errors in the child
1806 ** PROBE-FILE now simplifies pathnames correctly.
1807 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1808 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1809 1st 1970 (although time timezone data will be unreliable).
1810 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1812 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1813 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1814 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1816 * bug fix: two potential GC deadlocks affecting threaded builds.
1817 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1818 returns T (reported by Anton Kazennikov)
1819 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1820 with non-variable places
1821 * bug fix: remove a race condition in the setting of
1822 funcallable-instance functions, this should make threaded CLOS
1823 code more stable against memory faults.
1824 * bug fix: corruption of specials when unbinding is interrupted by an
1825 asynchronous unwind (reported by Hannu Koivisto)
1826 * improvement: the debugger will now also display local variables that
1827 are only used once, for code compiled with a DEBUG optimization quality
1830 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1831 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1832 * incompatible change: External-format support for FFI calls. The
1833 SB-ALIEN:C-STRING no longer implies an ASCII
1834 external-format. Instead the string is subject to external-format
1835 conversion. Additionally return values of type SB-ALIEN:C-STRING
1836 are by default of type (SIMPLE-ARRAY CHARACTER), not
1837 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1838 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1839 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1840 * incompatible change: SB-EXT package no longer contains the
1841 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1842 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1844 * incompatible change: the single-stepper is no longer available
1845 on Alpha, Mips and Sparc platforms.
1846 * minor incompatible change: the direct superclasses of
1847 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1848 not (STANDARD-OBJECT FUNCTION). This makes the
1849 class-precedence-lists of GENERIC-FUNCTION and
1850 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1852 * minor incompatible change: the default stream external format on
1853 non-unicode SBCL is no longer detected from the locale, but is always
1855 * new feature: Add a version of evaluator that uses an interpreter instead
1856 of the compiler. EVAL still uses the compiler by default, to switch it
1857 to use the interpreter, set the value of the variable
1858 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1859 * minor incompatible change: the single-stepper REPL has been merged
1860 with the normal debugger (see the "Stepping" heading of the debugger help
1861 for more details). The debugger command STEP will no longer switch
1862 to the single-stepper REPL.
1863 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1864 for a type now works.
1865 * bug fix: loading of default sysinit file works. (thanks to Leonid
1867 * bug fix: better detection of circularities in the file-compiler.
1868 (reported by Marco Monteiro)
1869 * bug fix: the CL pathname functions now work with files that have
1870 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1871 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1872 systems with Unix98 pty semantics.
1873 * bug fix: ASDF-INSTALL will now work with bsd tar.
1874 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1876 * bug fix: timers expiring in dead threads no longer cause a
1877 type-error (reported by Paul "Nonny Mouse").
1878 * bug fix: thanks to more lightweight single-stepper instrumentation,
1879 code compiled with (DEBUG 3) will compile and execute significantly faster,
1880 and will have more accurate type-inferencing than before
1881 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1882 whose bindings are modified
1883 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1884 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1885 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1886 CL:SOFTWARE-VERSION with proper version
1888 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1889 * feature: implemented the READER-METHOD-CLASS and
1890 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1891 as specified by AMOP.
1892 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1894 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1895 (thanks to Lutz Euler)
1896 * optimization: hashing of general arrays and vectors has been
1897 improved. (reported by Any Fingerhut)
1898 * enhancement: SB-INTROSPECT is now able to find definitions of
1899 profiled functions. (thanks to Troels Henriksen)
1900 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1901 as well, allowing compiler-macros for SETF-functions to expand.
1902 * enhancement: step-instrumentation no longer wraps known
1903 single-value functions with multiple-value context, allowing
1904 better type inference.
1905 * fixed bug #337: use of MAKE-METHOD in method combination now works
1906 even in the presence of user-defined method classes. (reported by
1907 Bruno Haible and Pascal Costanza)
1908 * fixed bug #339(c): if there are applicable methods not part of any
1909 long-form method-combination group, call INVALID-METHOD-ERROR.
1910 (reported by Bruno Haible)
1911 * fixed bug #361: the :FUNCTION initarg in the protocol for
1912 initialization of methods can now be used to override
1913 internally-produced optimized functions. (reported by Bruno
1915 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1916 system-provided lambda expression no longer cause warnings about
1917 unbound #:|pv-table| symbols.
1918 * bug fix: improved the handling of type declarations and the
1919 detection of violations for keyword arguments with non-constant
1921 * bug fix: potentially erronous calls to PATHNAME and
1922 MERGE-PATHNAMES were being flushed in some cases.
1923 (reported by Richard Kreuter)
1924 * bug fix: compiled calls to TYPEP were mishandling obsolete
1925 instances. (reported by James Bielman and Attila Lendvai)
1926 * bug fix: format strings with ~> without matching ~< no longer
1927 trigger an AVER, but signal an understandable error instead.
1928 (reported by Antonio Martinez)
1929 * bug fix: specifying an output-file without a pathname-type for
1930 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1931 of input-file instead of "fasl". (reported by Robert Dodier)
1932 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1933 (reported by James Y Knight).
1934 * bug fix: compiler-macros-function did not consider the environment
1935 argument for shadowing by local functions.
1936 * bug fix: compiler-macros expansion was inhibited by local INLINE
1938 * bug fix: inline expansions of known functions were subject to
1939 step-instrumentation in high debug policies, leading to problems
1940 with type-inference.
1941 * bug fix: compiler failed to differentiate between different CONS
1942 types in some cases.
1943 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1944 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1945 * bug fix: #368: incorrect use of expressed vs. upgraded array
1947 * bug fix: #306a: more precise unions of array types.
1948 * thread-safety improvements:
1949 ** CONDITION-WAIT could return early on Linux, if the thread was
1950 interrupted and subsequently continued with SIGCONT.
1951 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1953 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1954 * added support for the ucs-2 external format. (contributed by Ivan
1956 * minor incompatible change: pretty printing of objects of type
1957 (cons symbol) is, in the default pprint-dispatch-table, now
1958 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1960 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1961 called later in a class's lifetime, possibly as late as when the
1962 first instance of the class is created. Previously,
1963 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1964 class became finalizeable.
1965 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1966 for multibyte external-format streams. (thanks to "vbzoli")
1967 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1968 with :ALLOCATION :CLASS inherited from superclasses of the
1970 * fixed bug: anonymous classes can now be created using the :NAME
1971 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1972 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1973 * fixed bug: core-files saved with :EXECUTABLE T can again be
1974 executed when SBCL_HOME isn't set. (reported by James Knight)
1975 * fixed bug: toplevel LOCALLY forms with declarations could
1976 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1977 * fixed bug: printing from several different threads using different
1978 values of *print-case* could cause invalid output, due to
1979 some internal special variables of the printer not being bound
1980 thread-locally (reported by Max Mikhanosha)
1981 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1982 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1983 (reported by Pascal Costanza)
1984 * fixed bug: FINALIZE-INHERITANCE is called from
1985 REINITIALIZE-INSTANCE on classes when the class has previously
1986 been finalized, as required by AMOP.
1987 * minor code generation optimizations:
1988 ** better register allocation in CLOS dispatching functions
1989 ** overflow detection when coercing signed bytes to fixnums on x86-64
1990 ** is now implemented with one IMUL instruction instead of three shifts
1991 ** more efficient bit-vector access on x86 and x86-64
1992 ** more efficient access to raw structure slots on x86 and x86-64
1993 * fixed some bugs revealed by Paul Dietz' test suite:
1994 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1995 return its argument.
1997 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1998 * feature: thread support on Solaris/x86, and experimental thread support
2000 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2002 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2003 default method for SLOT-UNBOUND.
2004 * minor incompatible change: prevent the user from specializing the
2005 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2006 somewhat counter to the intent of the protocol, I (CSR) think, and
2007 additionally it just doesn't work in SBCL as currently
2008 implemented, thanks to optimizations (that are always valid for
2009 the other three SLOT-VALUEish functions, but not for the setter).
2010 * minor incompatible change: the :SB-LDB feature is now enabled by
2011 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2012 the low-level debugger.
2013 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2014 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2015 down to an SB-SYS:FD-STREAM, allowing direct communication in
2016 more cases. Temporary files and pipes are still used as a fallback
2018 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2019 on the non-reentrant C functions localtime(3) and gmtime(3).
2020 * bug fix: global optimization policy was not visible in LOCALLY and
2022 * bug fix: class objects can be used as specializers in methods.
2023 (reported by Pascal Costanza)
2024 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2025 with a type error. (reported by blitz_ on #lisp)
2026 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2027 failed with a type error. (reported by Pascal Bourguignon)
2028 * bug fix: merging pathnames against defaults with :DIRECTORY
2029 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2030 (reported by James Y Knight)
2031 * bug fix: saving large (>2GB) cores on x86-64 now works
2032 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2033 constant index and a (simple-array (signed-byte 32)) array
2034 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2035 error (patch by Robert J. Macomber)
2036 * feature: TIME now displays the amount of run-time spent in GC
2037 * bug fix: The debugger now does a better job of respecting
2038 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2039 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2040 workaround for bug 403.)
2041 * bug fix: floating point exception handling now works on FreeBSD
2042 (thanks to NIIMI Satoshi)
2043 * fixed some bugs revealed by Paul Dietz' test suite:
2044 ** MISC.641: LET-conversion were not supposed to work in late
2046 * improvements to the Win32/x86 port:
2047 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2048 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2050 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2051 * new feature: source path information is generated for macro-expansion
2052 errors for use in IDE's like Slime (thanks to Helmut Eller)
2053 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2054 * bug fix: compiler does not loop forever on an invalid type in
2056 * improvement: compilation of most CLOS applications is significantly
2058 * optimization: added a limited bytecode compiler for simple toplevel
2059 forms, speeding up compilation and FASL loading
2060 * bug fix: the statistical profiler now properly distinguishes anonymous
2063 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2064 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2065 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2066 into subclasses of the finalized class. Now user calls to
2067 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2068 system return before any subclasses are finalized.
2069 * minor incompatible change: The reader no longer ignores errors
2070 regarding non-existent packages in #+ and #- feature tests.
2071 * new feature: command line options --no-sysinit, --no-userinit to
2072 inhibit loading the corresponding init files
2073 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2074 for sending data through UDP sockets (thanks to François-René Rideau)
2075 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2076 error is signalled instead (thanks to François-René Rideau)
2077 * minor incompatible change: Error signalling behaviour of lexical
2078 operations violating package locks has changed slightly. Refer to
2079 documentation on package locks for details.
2080 * enhancement: EVAL can process IF-expressions without resorting to the
2082 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2083 constant-folded properly due to missing out-of-line functions.
2084 (reported by Mika Pihlajamäki)
2085 * bug fix: LISTEN sometimes returned T even in cases where no data was
2086 immediately available from the stream
2087 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2088 were reversed. (reported by Levente Mészáros)
2089 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2090 when given a vector displaced to an adjustable array. (reported
2092 * bug fix: derivation of float boundaries from numbers outside the
2093 appropriate float range (reported by John Wiseman)
2094 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2096 * bug fix: precomputing cache entries for generic functions with
2097 some subclasses of specializers as yet invalid does not attempt to
2098 fill a cache line with a negative offset. (reported by Levente
2100 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2101 allow condition class objects as arguments to DOCUMENTATION and
2102 (SETF DOCUMENTATION); only find and set documentation for
2103 structure names for the STRUCTURE doc-type. (suggested by Gary
2105 * improvements to the Win32/x86 port:
2106 ** (user-homedir-pathname) and default initialization file
2107 locations now know about the user's "Documents and Settings"
2108 directory (thanks to Yaroslav Kavenchuk)
2109 ** run-program is implemented (thanks to Mike Thomas)
2110 ** sockets support (thanks to Timothy Ritchey)
2111 ** better backtrace support (thanks to Alastair Bridgewater)
2112 ** sb-grovel supported
2113 ** asdf-install and sb-posix work somewhat
2114 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2115 * improvements to the Solaris/x86 port:
2116 ** works on Solaris 11/Solaris Express
2117 ** floating-point exception handling support
2118 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2119 * fixed some bugs revealed by Paul Dietz' test suite:
2120 ** REMOVE-METHOD returns its generic function argument even when
2121 the method is not one of the generic functions' methods.
2122 ** objects declared as MEMBER types can be admissible arguments to
2123 structure accessors.
2124 ** printing characters should simply be printed by the FORMAT ~:C
2126 ** compiler failure when compiling functions with hairy constant
2127 defaults for optional parameters.
2128 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2129 function, which is already optimized.
2131 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2132 * new platform: experimental support for SBCL x86/Darwin, including
2133 MacOS X 10.4.5 on Intel.
2134 * new feature: Unicode character names are now known to the system
2135 (through CHAR-NAME and NAME-CHAR).
2136 * new feature: the filesystem location of SBCL's core file is
2137 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2138 * minor incompatible change: the contrib modules SB-POSIX and
2139 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2140 this change is to make it easier to distribute
2141 location-independent binaries.
2142 * bug fix: as implied by AMOP, standardized classes no longer have
2143 slots named by external symbols of public packages. (reported by
2145 * optimization: calling functions via constant symbols -- as in
2146 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2147 via the function object as in (FUNCALL #'FOO).
2148 * optimization: on x86 and x86-64, the calling convention for the
2149 case of dealing with an unknown number of values has been altered
2150 to be friendlier to the prediction heuristics implemented,
2151 particularly with reference to CALL and RET pairing. (thanks to
2152 Alastair Bridgewater)
2153 * optimization: on x86, the code for access to thread-local symbol
2154 values and binding/unbinding of thread-local symbols is smaller.
2155 (thanks to Alastair Bridgewater)
2156 * enhancement: CONSTANTP is now able to determine constantness of
2157 more complex forms, including calls to constant-foldable standardized
2158 functions and some special forms beyond QUOTE.
2159 * fixed bug: occasional GC crashes on Solaris/x86
2160 * optimization: x86-64 supports stack allocation of results of simple
2161 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2162 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2163 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2164 (thanks to James Knight)
2165 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2166 by the standard (thanks to Stephen Compall)
2168 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2169 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2170 be used for bundling the runtime and the core file into one
2171 executable binary. This feature is not currently supported on all SBCL
2172 platforms. (thanks to James Bielman and NIIMI Satoshi)
2173 * new feature: a generational or ephemeral garbage collector is now
2174 the default on the PowerPC platform (both Linux and Darwin). The
2175 old Cheney (stop and copy) collector is a build-time option.
2176 (thanks to Cyrus Harmon, after Raymond Toy)
2177 * minor incompatible change: the method by which SBCL finds its
2178 contributed modules has changed; it no longer relies on symbolic
2179 links from an $SBCL_HOME/systems directory, but searches directly
2180 in the subdirectories of $SBCL_HOME.
2181 * enhancement: the dynamic heap size on the Linux/PPC platform is
2182 markedly larger, even using the older Cheney garbage collector.
2183 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2184 certain complicated string types. (reported by Gary King)
2185 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2186 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2187 * fixed bug: DOCUMENTATION on structures no longer signals an
2188 error if no structure type of the right name exists. (reported by
2190 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2191 applicable non-standard primary or :AROUND method on
2192 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2193 no longer cause unbound variable errors. (reported by Kevin Reid)
2194 * fixed bug: metacircle resolution in cases where methods have slots
2195 added before the slots from STANDARD-METHOD. (reported by Jean
2197 * fixed bug: the Power PC assembly code for calling into lisp
2198 sometimes computed its return address wrongly (depending on the
2199 15th bit of the address, fixed at link time). This used to
2200 manifest itself in a segmentation violation while building PCL.
2201 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2202 many others over the years)
2203 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2204 the stack pointer (treated as a signed integer) is negative.
2205 (thanks to Peter van Eynde)
2207 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2208 * new platform: experimental support for the Windows operating
2209 system has been added. (thanks to Alastair Bridgewater)
2210 * fixed several bugs in and robustified the PPC FFI (including
2211 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2212 * bug fix: allow non-simple string symbol names (reported by Paul
2214 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2216 * bug fix: saving a core corrupted callbacks on x86/x86-64
2217 * bug fix: closed a loophole in metacircularity detection and
2218 grounding in the PCL implementation of CLOS.
2219 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2220 (reported by tomppa on #lisp)
2221 * bug fix: clear the direction flag on Lisp -> C transitions, as
2222 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2223 (reported by Andrej Grozin and Hendrik Maryns)
2224 * optimization: major improvements to GC efficiency on GENCGC platforms
2225 * optimization: faster implementation of EQUAL
2226 * optimization: emit more efficient opcodes for some common
2227 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2228 * optimization: several other minor code-generation improvements on x86-64
2229 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2231 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2232 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2233 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2234 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2235 by ANSI as a generic function, and for consistency (SETF
2236 GENERIC-FUNCTION-NAME) is treated likewise.
2237 * fixed bug #233.b: make constraint propagation notice when a variable
2238 value is changed after it is referenced but before it is used
2239 * fixed bug #296: no more arbitrary behaviour from filenames with
2240 odd characters as --load arguments. (reported by Adam Warner)
2241 * fixed bug #390: :CHARACTER-SET pathname components now work as
2242 expected. (reported by Tim Daly Jr)
2243 * fixed bug #391: complicated :TYPE intersections in slot
2244 definitions no longer cause an error in PCL internals.
2245 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2246 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2247 returning the number of octets which would be written to the
2248 file-stream. (thanks to Robert J. Macomber)
2249 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2250 arguments to the internal stream functions. (thanks to David
2252 * bug fix: stack exhaustion is now handled on the x86/SunOS
2253 platform. (thanks to Daisuke Homma)
2254 * bug fix: more accurate ROOM results on GENCGC platforms
2255 * optimization: improved type inference for arithmetic-for
2256 index variables in LOOP
2257 * optimization: faster floating-point SQRT on x86-64
2258 * fixed some bugs revealed by Paul Dietz' test suite:
2259 ** DOCUMENTATION returns NIL instead of "" for method combinations
2260 that don't have a docstring
2262 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2263 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2264 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2265 therefore are not customizeable by user code (as seems to be at
2266 least permitted and maybe required by AMOP). As a consolation,
2267 however, the SBCL implementation of these functions now calls
2268 REINITIALIZE-INSTANCE as specified by AMOP.
2269 * bug fix: slot-definition documentation is propagated as per ANSI
2270 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2271 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2272 argument, as do eslotd initialization methods. (from Pascal
2273 Costanza's "Closer" project)
2274 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2275 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2277 * bug fix: it is now possible to have more than one subclass of
2278 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2279 (reported by Bruno Haible, Pascal Costanza and others)
2280 * bug fix: the dependent update protocol now works for generic
2281 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2282 and Pascal Costanza)
2283 * bug fix: condition-class instances corresponding to
2284 DEFINE-CONDITION forms are now created eagerly. (reported by
2285 Kalle Olavi Niemitalo on comp.lang.lisp)
2286 * bug fix: floating point printing is more accurate in some
2287 circumstances. (thanks to Simon Alexander)
2288 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2289 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2290 * bug fix: callbacks on OS X now preserve stack-alignment.
2291 (thanks to Cyrus Harmon)
2292 * enhancement: the x86-64 disassembler is much better at
2293 disassembling SSE instructions. (thanks to Lutz Euler)
2294 * enhancement: CHECK-TYPE on a variable now allows type-inference
2295 (thanks to Vincent Arkesteijn)
2296 * optimization: improved performance of EUC-JP external format.
2297 (thanks to NIIMI Satoshi)
2298 * optimization: performance improvements to IO on file streams of
2299 :ELEMENT-TYPE CHARACTER
2300 * optimization: much faster memory allocation on x86-64
2301 * optimization: faster garbage collections (latency and throughput)
2303 * optimization: faster bignum subtraction and division on x86 and x86-64
2304 (thanks to Lutz Euler)
2305 * optimization: more accurate type-inference for loops that use a
2306 floating point index variable or a negative step.
2308 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2309 * bug fix: add a workaround to SBCL looping infinitely at startup on
2310 Linux kernels with apparently buggy implementations of personality().
2311 (thanks to Svein Ove Aas)
2312 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2313 (thanks to David Lichteblau)
2314 * bug fix: local bindings shadow global symbol macros for
2315 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2316 * optimization: non-open coded uses of numeric comparison operators
2317 (e.g. >) no longer cons when called with more than one parameter
2318 on platforms supporting dynamic-extent allocation.
2319 * enhancement: saving cores with foreign code loaded is now supported
2320 on MIPS/Linux in addition to the previously supported platforms.
2321 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2322 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2323 * bug fix: division by zero in sb-sprof when no samples were collected
2324 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2325 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2326 (thanks to Alexander Kjeldaas)
2327 * new feature: ignoring the return values of destructive functions
2328 like NREVERSE signals a compile-time style-warning.
2329 (thanks to Kevin Reid)
2330 * new feature: the alignment of alien structure fields can be
2331 explicitly specified. (thanks to Cyrus Harmon)
2332 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2333 and dump core on SIGQUIT
2335 ** incompatible change: threads do not inherit values of specials
2336 from their parents (see manual)
2337 ** bug fix: threads stacks belonging to dead threads are freed by the
2338 next exiting thread, no need to gc to collect thread stacks anymore
2339 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2340 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2341 ** bug fix: dynamic variable and thread start related gc lossage
2342 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2344 * fixed some bugs revealed by Paul Dietz' test suite:
2345 ** SUBTYPEP is slightly more accurate on heinously complicated
2346 CONS types where some of the members have uncertain (in the
2347 NIL, NIL sense) type relationships to each other.
2349 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2350 no longer purified unless :PURIFY T is explicitly specified.
2351 ** Non-purified cores are significantly smaller than before
2353 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2354 * new feature: timers based on Zach Beane's excellent timer package
2355 * added support for the following external formats: koi8-u,
2356 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2357 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2358 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2359 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2360 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2361 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2362 * incompatible change: a threaded SBCL will no longer revert to
2363 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2364 * bug fix: interrupts are disabled until startup is complete; no
2365 more sigsegvs when receiving a signal to soon
2366 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2368 * bug fix: add a workaround for the memory randomization features in
2369 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2370 workaround will only be in effect on systems with the proc filesystem
2372 * bug fix: printing objects of type HASH-TABLE signals a
2373 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2375 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2376 have been running for over 50 days. (reported by Gilbert Baumann)
2377 * bug fix: the logic for getting names of functions gets less
2378 confused when confronded with alternate-metaclass
2379 funcallable-instances. (reported by Cyrus Harmon)
2380 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2381 consistent, even on internal alternate-metaclass objects.
2382 * bug fix: flush closure information collected by physical
2383 environment analysis prepass before the main pass. (bug reported
2385 * bug fix: compiler pack phase does not modify a hashtable, which is
2386 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2387 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2388 may be expanded. (reported by Alexander <malishev> on c.l.l)
2389 * bug fix: no more style-warnings when compiling code using LAST
2390 under high-SPEED low-SPACE settings. (reported by David Wallin
2392 * fixed some incompatibilities between SBCL's MOP and the MOP
2394 ** the METAOBJECT class is now implemented;
2395 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2396 STANDARD-OBJECT, as required;
2397 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2398 now compatible (as required by VALIDATE-SUPERCLASS); there
2399 remains a consistency requirement over the presence or absence
2400 of the FUNCTION class in the superclass list of finalized
2401 classes; see the manual for more details;
2402 ** the :AROUND method for COMPUTE-SLOTS on
2403 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2404 requested slot ordering.
2406 ** bug fix: parent thread now can be gc'ed even with a live
2408 ** bug fix: binding a special with PROGV to no value is not
2409 the same as that symbol not having been bound (thanks to
2411 ** bug fix: binding specials is thread safe (thanks to
2413 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2414 and SB-SPROF do not die with 'no handler for signal XX in
2415 interrupt_handle_now(..)' anymore
2416 ** bug fix: WITH-TIMEOUT works with multiple running threads
2417 * fixed some bugs revealed by Paul Dietz' test suite:
2418 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2419 the :method-class keyword argument.
2421 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2422 * new port: the Solaris operating system on x86 processors is now
2423 mostly supported, though some rough edges in the environment
2424 remain. (thanks to Daisuke Homma)
2425 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2426 space for its heap. (thanks to Thiemo Seufer)
2427 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2428 closures. (thanks to Thiemo Seufer)
2429 * minor incompatible change: eof selects abort in the debugger.
2430 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2431 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2433 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2434 deprecated, and will go away in a future revision of SBCL.
2435 * minor incompatible change: GC-ON and GC-OFF are no longer
2436 implemented with a counter, it does not matter how many times gc
2437 is switched on or off
2438 * bug fix: discriminating functions for generic function classes
2439 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2440 make invalid assumptions about method precedence order. (reported
2442 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2443 platforms. (thanks to Thiemo Seufer)
2444 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2445 * bug fix: correct pathname printing with printer escaping is on.
2446 (thanks to Kevin Reid)
2447 * bug fix: complex VOP definitions in "user-space" no longer trigger
2448 package locks. (reported by Zach Beane)
2449 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2450 for funcallable-instance functions, and is no different from
2452 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2453 characters in the current readtable. (reported by Nicholas Neuss)
2454 * bug fix: SUBTYPEP on various CONS types returns more a more
2455 accurate acknowledgment of its certainty.
2456 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2457 lists in some cases. This partially fixes bug 384.
2458 * flush all standard streams before prompting in the REPL and the
2460 * bug fix: signal handling and triggering gc do not conflict
2461 directly anymore, in particular a high frequency sb-sprof does
2462 not prevent gc from running
2463 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2464 approximation for timezone and DST information between the
2465 universal time epoch and the smallest negative 32-bit time_t.
2466 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2467 year 1899 so long as the encoded time is non-negative.
2468 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2469 the correct answer for non-constant rotate amounts when performing
2470 an inline 32-bit rotation.
2472 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2473 there is only one thread in the session
2474 ** bug fix: memory leak for streams created in one thread and
2475 written to in another
2476 ** bug fix: lockup when compiled with gcc4
2477 ** bug fix: race that allows the gc to be triggered when gc is
2479 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2480 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2482 ** bug fix: finished threads are gc'ed properly
2483 * fixed some bugs revealed by Paul Dietz' test suite:
2484 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2485 has arguments with a different set of applicable methods from
2486 the orignal arguments.
2487 ** The type error thrown by MAP now has a correct expected-type
2489 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2490 name a compiled function.
2491 ** Three MISC tests where a large bignum was improperly coerced to
2492 a float that couldn't represent that bignum during type
2493 derivation were fixed.
2494 ** SUBTYPEP can now handle types involving the negation of a
2495 list-form FUNCTION type.
2496 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2497 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2498 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2500 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2501 * New feature: Experimental support for bivalent streams: streams
2502 opened with :element-type :default now allow character and binary
2503 (unsigned-byte 8) I/O
2504 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2505 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2507 * bug fix: no more highly sporadic "couldn't check whether ~S is
2508 readable" when reading a stream and an interrupt hits in the middle
2509 of a select system call
2510 * compiler better recognizes complex arrays (reported by Eduardo
2512 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2513 for variables on SBCL built with linkage-tables. (reported by Luis
2515 * various error reporting improvements.
2516 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2517 (Thanks to Thiemo Seufer)
2518 * bug fix: nested reader invokations work correctly
2519 * bug fix: it is possible to have simultaneous references to foreign
2520 code and foreign data with the same name.
2522 ** added x86-64 support
2523 ** incompatible change: the threading api now works with thread
2524 objects instead of thread ids
2525 ** bug fix: threads are protected from signals and interruption when
2526 starting up or going down
2527 ** bug fix: a race where an exiting thread could lose its stack to gc
2528 ** bug fix: don't halt on infinite error in threads if possible
2529 ** fixed numerous gc deadlocks introduced in the pthread merge
2530 ** bug fix: fixed thread safety issues in read and print
2531 ** bug fix: debugger doesn't hang on session lock if interrupted at
2532 an inappropriate moment
2533 ** bug fix: run-program is now thread safe(r)
2534 ** bug fix: inner with-recursive-lock no longer releases the mutex
2535 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2536 * fixed some bugs revealed by Paul Dietz' test suite:
2537 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2538 EXPECTED-TYPE slots filled.
2539 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2541 ** MAKE-CONDITION accepts classes as type-designators.
2542 ** COMPILE may never return NIL.
2543 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2544 range before calling Unix time functions
2546 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2547 * numerous signal handling fixes to increase stability
2548 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2549 * minor incompatible change: we now correctly canonize default
2550 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2551 as per the MOP, rather than the historical (INITARG INITFUNCTION
2552 INITFORM). (reported by Bruno Haible)
2553 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2554 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2555 for more information.
2556 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2557 pathname is a directory pathname.
2558 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2559 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2561 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2562 :METACLASS argument in addition to a class name. (reported by
2563 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2564 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2565 (reported by Bruno Haible; patch from Gerd Moellmann)
2566 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2568 * bug fix: more cleanups to the floating point exception handling on
2569 x86-64 (thanks to James Knight)
2570 * bug fix: the compiler does not try to constant fold calls of
2571 COERCE and BIT-* functions when they return freshly constructed
2572 objects. (reported by Nikodemus Siivola and Paul Dietz)
2573 * optimization: improved the MIPS versions of generic (in the
2574 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2575 * optimization: direct conversion of (unsigned-byte 32) to floats on
2576 the PowerPC platform.
2577 * optimization: structure instances with raw slots now use less
2578 memory, and probably show better memory locality. (thanks to
2580 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2581 are treated as requests for stack allocation on the x86-64,
2582 Alpha-32, PPC and SPARC platforms.
2583 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2584 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2585 (thanks to Tony Martinez)
2587 ** gcing a dead thread can no longer lead to lockups
2588 ** threads block signals until they are set up properly
2589 ** errno is no longer shared by threads
2590 ** interrupt-thread restores the eflags register on x86
2591 ** fixed some lockups due to gc/thread interaction
2592 * fixed some bugs revealed by Paul Dietz' test suite:
2593 ** invalid dotted lists no longer raise a read error when
2594 *READ-SUPPRESS* is T
2595 ** signal an error if a symbol that names a declaration is used
2596 as the name of a type, or vice versa
2597 ** allow using the (declare (typespec var*)) abbreviation for
2598 (declare (type typespec var*)) with all type specifiers
2599 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2600 ** always return NIL from PPRINT-POP when OBJECT is NIL
2601 ** don't signal errors when pretty-printing malformed LABELS,
2602 FLET or MACROLET forms
2603 ** declarations in a DOLIST body are also in scope for the
2605 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2607 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2610 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2611 * fixed cross-compiler leakages that prevented building a 32-bit
2612 target with a 64-bit host compiler.
2613 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2614 opened with :IF-EXISTS :OVERWRITE.
2615 * fixed bug 281: error for an invalid qualifier in a short-form method
2616 combination method is not signalled until the faulty method is called.
2617 * bug fix: iteration variable type inferrer failed to deal with open
2618 intervals. (reported by Alan Shields)
2619 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2620 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2621 or more runtime options were provided to the sbcl binary.
2622 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2623 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2624 * optimization: there's now a fast-path for fixnum arguments in the
2625 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2626 * optimization: the code generated on x86-64 is more compact thanks
2627 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2628 * bug fix: floating-point exception handling now partly works on
2629 x86-64. (Thanks to James Knight)
2630 * improvement to the MIPS backend from Thiemo Seufer: C-style
2631 64-bit long long arguments and return values to alien functions
2633 * fixed some bugs revealed by Paul Dietz' test suite:
2634 ** the type-error signalled from WARN has a filled-in DATUM slot.
2635 ** the type-error required when a stream is not associated with
2636 a file has the stream as its datum.
2637 ** type-errors on single-floats on x86-64 no longer have
2638 :INVALID-OBJECT as the datum
2639 ** the type-errors signalled for invalid function names now have
2640 a correct expected type
2641 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2642 for structures defined with a :TYPE. Documentation strings for
2643 typed structures are no longer immediately discarded
2644 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2645 broadcast streams and synonym streams. FILE-LENGTH now also works
2646 on broadcast streams.
2648 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2649 * incompatible change: the --noprogrammer option, deprecated since
2650 version 0.7.5, has been removed. Please use the equivalent
2651 --disable-debugger option instead.
2652 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2654 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2655 inoperational for a while now) has been completely removed.
2656 * null lexical environments are now printed as #<NULL-LEXENV>,
2657 significantly reducing the amount of clutter in typical backtraces.
2658 * documentation on weak pointers, finalization, and after GC hooks
2659 has been added to the manual.
2660 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2661 as other specialized array types, is much faster. SUBSEQ and
2662 COPY-SEQ on such arrays have also been sped up.
2663 * optimization: EQL is now more efficient when at least other argument
2664 is known to be of type (OR FIXNUM (NOT NUMBER)).
2665 * fixed bug: the runtime is now less vulnerable to changes in the
2666 size of the SBCL object on OS X, and virtual memory is reserved for
2667 all spaces that need to be at a fixed address.
2668 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2669 * fixed bug: finalizers and after GC hooks that cause consing are now
2671 * fixed bug: compiler error messages and summaries are now printed to
2672 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2673 * fixed inference of the upper bound of an iteration variable.
2674 (reported by Rajat Datta).
2675 * fixed bug 211e: calling local functions with duplicated constant
2676 keyword argument no longer causes a bogus style warning about an
2678 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2679 ftype declaration to be disregarded. (reported by Dave Roberts)
2680 * fixed bug 373: caused by erronous compilation of references to alien
2681 variables in the runtime on ppc/darwin.
2682 * fixed bug 376: CONJUGATE type deriver.
2683 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2684 (reported by Baughn on #lisp)
2685 * a cross-compiler bug on non-x86 platforms has been identified and
2686 fixed. (thanks to Bruno Haible)
2687 * improvements to the MIPS runtime code for increased stability.
2688 (thanks to Thiemo Seufer)
2689 * increased the maximimum compact environment size to allow
2690 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2691 * partial workaround for bug 135: don't name the function we're
2692 calling for hairy cases of EVAL, so as not to accumulate one environment
2693 entry per call to EVAL. (reported by Kevin Reid)
2694 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2695 * optimization: type testing for non-vector arrays should be faster.
2696 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2698 * bug fix: setting 31st element of a bit vector to zero did not work
2700 * bug fix: redefining a class definition which failed due to a
2701 previous accessor / function clash now works (but see BUGS entry
2702 #380 for more problems in this area). (thanks to Zach Beane)
2703 * the long form of DEFINE-METHOD-COMBINATION disables method group
2704 checking when given a single method group with pattern *. (thanks
2706 * on x86 compiler supports stack allocation of results of simple
2707 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2708 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2709 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2710 * fixed some bugs related to Unicode integration:
2711 ** the restarts for recovering from input and output encoding
2712 errors only appear when there is in fact such an error to
2714 * fixed some bugs revealed by Paul Dietz' test suite:
2715 ** MISC.549 and similar: late transformation of unsafe type
2716 assertions into derived types caused unexpected code
2718 ** SCALE-FLOAT type deriver is less wrong.
2719 ** type derivers for EXP, LOG and similar functions compute result
2720 types for complex arguments better.
2721 ** (MISC.563) CONJUGATE type deriver works for very restricted
2723 ** out-of-line type testers for character strings are available.
2724 ** EQUAL compiler transform understands specialness of objects
2726 ** accessing double-floats stored on the stack now works on x86-64.
2727 ** debugger internals could sometimes create invalid lispobjs,
2728 resulting in GC crashes.
2729 ** MISC.548: type check weakening can convert required type into
2731 ** initialization forms for bindings are not in scope of free special
2734 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2735 * incompatible change: thread support for non-NPTL systems has
2736 been removed - locking is buggy and unreliable. A threaded
2737 SBCL build will now warn at startup and refuse to create
2738 new threads, unless futex support is detected in the kernel
2739 * incompatible change: the top level REPL now has only an ABORT
2740 restart associated with it, not TOPLEVEL and ABORT as it used to.
2741 TOP and TOPLEVEL are now available as debugger commands for
2742 returning to the top level.
2743 * incompatible change: forms evaluated in the REPL now use the
2744 global optimization policy.
2745 * incompatible change: user- and system-initialization files are
2746 no longer processed with LOAD, but by READ and EVAL; hence the
2747 global optimization policy, startup package, readtable, etc,
2749 * The .fasl file format number has been incremented because of
2750 various incompatible changes.
2751 * internal entry point details and argument counts no longer appear
2752 in backtraces unless explicitly requested by setting
2753 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2754 * built-in and standard functions no longer have names like "top
2755 level local call to FOO".
2756 * fixed bug 32: functions defined in non-null lexical environments
2757 now have more legible printed representation
2758 * fixed bug 33: functions defined in non-null lexical environemnts
2759 are now more amenable to inspection by INSPECT.
2760 * workaround for bug 354: XEPs no longer appear in backtraces unless
2761 explicitly requested.
2762 * fixed bug: receiving the signal which results from attempting to
2763 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2764 SIGBUS on other *BSDs) on architectures where the C stack is also
2765 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2766 to debugger confusion or wild instability. (reported by Cheuksan
2768 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2769 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2770 (reported by Lutz Euler)
2771 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2772 compiled code. (reported by Paul Dietz)
2773 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2774 specialized parameter to a method to something that is not TYPEP
2775 the specializer is now possible.
2776 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2777 face of package deletion.
2778 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2779 pathname. (reported by David Tolpin on c.l.l)
2780 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2781 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2782 STRING-STREAM and FILE-STREAM, respectively.
2783 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2784 than previously; in addition, its test suite is now run on build.
2785 (thanks to Luke Gorrie)
2786 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2787 * optimization: added a immediate representation for single-floats
2789 * fixed some bugs revealed by Paul Dietz' test suite:
2790 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2791 ** attempting to create a package with a colliding nickname causes
2792 correctable errors to be signalled.
2793 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2794 ** several x86-64 backend bugs related to sign-extension of immediate
2797 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2798 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2799 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2801 * fixed loading of multiply forward-referenced layouts.
2802 (thanks to Cheuksan Wang)
2803 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2804 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2805 (see COMPILE-FILE documentation for details of :PRINT option)
2806 * fixed bugs 19 and 317: fixed-format floating point printing is
2807 more accurate. This also fixes a bug reported by Adam Warner
2808 related to the ~@F format directive.
2809 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2811 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2812 dispatch table if the from-char is a dispatch macro character.
2813 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2814 by the wordsize no longer ignore the last word. (reported by Lutz
2816 * fixed bug in type checking of dynamic-extent variables. (reported
2818 * optimization: sequence traversal functions use their freedom to
2819 coerce function designators to functions.
2820 * optimization: code with many calls to CLOS methods specialized on
2821 CLOS classes has had redundant type checks removed.
2822 * optimization: added declarations to speed up operations that access
2823 the internal character database (for example STRING-UPCASE)
2824 * optimization: comparison operations between floats and sufficiently small
2825 fixnums no longer create extra rationals
2826 * fixed some bugs related to Unicode integration:
2827 ** portions of multibyte characters at the end of buffers for
2828 character-based file input are correctly transferred to the
2829 start of the buffer at the next read.
2830 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2831 passing it through to OPEN.
2832 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2833 argument given to internal calls to OPEN.
2834 ** the built-in comment readers (introduced by character sequences
2835 ";" and "#|") are more forgiving to encoding errors; they will
2836 STYLE-WARN and then attempt to resync the stream at a character
2837 boundary. (thanks to Teemu Kalvas)
2838 * fixed some bugs in the x86-64 port:
2839 ** Negative short int return values from c-calls are sign-extended
2841 ** The stack is aligned to 16-bytes for c-calls, as required by
2842 the ABI. (thanks to Cheuksan Wang)
2843 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2844 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2845 for enums. (thanks to Vincent Arkesteijn)
2846 ** Multiple small optimizations and bugfixes for floating point
2848 * fixed some bugs revealed by Paul Dietz' test suite:
2849 ** Space, Tab, Linefeed, Return and Page have the invalid
2850 secondary constituent character trait.
2851 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2853 ** WITH-INPUT-FROM-STRING should only update the index place on
2855 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2856 works more reliably.
2857 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2858 with one-dimensional arrays with fill pointers.
2859 ** TYPE-OF failed on a complex with an integer realpart and a
2861 ** compiler failure during type inference for the code of form
2862 (IF (EQL X (THE ...)) ...) (MISC.535).
2864 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2865 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2866 platform. The port supports 61-bit fixnums, large memory spaces
2867 and reloading shared object files.
2868 * enhancement: saving cores with foreign code loaded is now
2869 supported on ppc/Darwin in addition to the previously supported
2871 * enhancement: the statistical profiler now walks deeper into the
2872 call stack for more meaningful call-graphs and accrued time
2873 reports (x86/x86-64 only). It also now reports time spent in
2875 * enhancement: it is now possible to trace most individual methods
2876 of a generic function in addition to tracing the generic function
2878 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2880 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2881 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2882 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2883 produces an error. (thanks to Vincent Arkesteijn)
2884 * bug fix: NAMESTRING on pathnames with :WILD components in their
2885 directories works correctly. (thanks to Artem V. Andreev)
2886 * fixed bug 125: compiler preserves identity of closures. (reported
2888 * bug fixed: functions with &REST arguments sometimes failed with
2889 "Undefined function" when compiled with (DEBUG 3). (reported by
2891 * bug fix: overflow during compiling of setting element of a bit
2892 vector with constant index and value. (reported by Timmy Douglas)
2893 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2894 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2895 * on x86 compiler partially supports stack allocation of dynamic-extent
2897 * GO and RETURN-FROM do not check the extent of their exit points
2898 when compiled with SAFETY 0.
2899 * fixed some bugs related to Unicode integration:
2900 ** encoding and decoding errors are now much more robustly
2901 handled; it should now be possible to recover even from invalid
2902 input or output to the terminal. (thanks to Teemu Kalvas)
2903 ** provided a first cut at implementing STRING-TO-OCTETS and
2904 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2905 ** altered the SB-MD5 contributed module slightly, changing the
2906 interface just enough for it to be supportable for builds where
2907 lisp characters are not eight bits.
2908 * fixed some bugs revealed by Paul Dietz' test suite:
2909 ** the FORMATTER-generated functions for ~V[ conditionals require
2910 the correct number of arguments.
2911 ** READ-FROM-STRING returns the mandated second value when applied
2912 to displaced strings.
2913 ** the #\Rubout and #\Backspace characters are treated as invalid
2914 constituent characters by the tokenizer.
2916 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2917 * new feature: reloading changed shared object files with
2918 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2919 * new feature: references to foreign variables and functions
2920 can now be compiled and loaded before the corresponding shared
2921 object file is loaded, as long as the foreign definitions are
2922 available at runtime.
2923 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2924 supported. (thanks to Dan Debertin)
2925 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2926 just keywords. (thanks to Vincent Arkesteijn)
2927 * fixed bug #331: structure-class instances corresponding to
2928 DEFSTRUCT forms are now created eagerly.
2929 * fixed bug #345: backtraces from calls to undefined functions work
2930 on x86 as well. Related bug #61 is now also partially fixed on x86
2931 (backtraces from throws to unknown catch tags.)
2932 * bug fix: lambda-list parsing is now stricter vrt. order and number
2933 of lambda-list keywords.
2934 * bug fix: as specified by AMOP, an error is signalled if a
2935 class-option appears multiple times in a DEFCLASS form. (reported
2937 * bug fix: RANDOM can be compiled when the compiler derives the type
2938 of its numeric argument as a disjoint set of small integers.
2939 (reported by Paul Dietz)
2940 * bug fix: starting a core saved with shared objects loaded when
2941 those objects are not available no longer causes threaded SBCL to
2942 hang. (reported by Sean Ross)
2943 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2945 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2946 argument, which must always be NIL. (reported by Kalle Niemitalo)
2947 * bug fix: printing 1.0d+23 no longer results in an error.
2948 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2949 * bug fix: structure slot setters preserve evaluation order. (thanks
2951 * fixed some bugs related to Unicode integration:
2952 ** RUN-PROGRAM can allow its child to take input from a Lisp
2953 stream. (reported by Stefan Scholl)
2954 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2955 locales. (reported by Ken Causey)
2956 * fixed some bugs revealed by Paul Dietz' test suite:
2957 ** INCF, DECF and REMF evaluate their place form as specified in
2959 ** FORMATTER expands ~{ ~} iteration directives with V or #
2960 parameters correctly.
2961 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2962 consequent uses no arguments correctly.
2963 ** the system has a partial understanding of the (COMPLEX RATIO)
2965 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2968 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2969 * new feature: a build-time option (controlled by the :SB-UNICODE
2970 keyword feature, enabled by default) for building the system with
2971 support for the entire 21-bit character space defined by the
2973 * new feature: the system now has rudimentary external-format
2974 support; the primary user-visible change at this time is that
2975 characters with the high bit set (such as lower-case-e-acute) will
2976 print correctly to a terminal in a UTF-8 environment.
2977 * minor incompatible change: BASE-CHAR no longer names a class;
2978 however, CHARACTER continues to do so, as required by ANSI.
2979 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2980 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2981 has been moved to the SB-EXT package (temporarily re-exported from
2983 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2984 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2986 * fixed bug #351: better error-handlind and reporting for malformed
2988 * fixed bug #350: bignum-printing is now more memory-efficient,
2989 allowing printing of very large bignums, eg. (expt 2 10000000).
2990 (reported by Bruno Haible)
2991 * fixed bug #302: better primitive-type selection for intersection
2993 * fixed bug #308: non-graphic characters now all have names, as
2994 required. (reported by Bruno Haible)
2995 * bug fix: redefining a class with different superclasses now correctly
2996 removes it from the direct-subclasses of its previous superclasses.
2997 (reported by David Morse)
2998 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2999 new value now works. (reported by Bruno Haible)
3000 * bug fix: correct canonicalization of multiple non-standard slot
3001 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3002 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3003 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3004 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3005 now exists, an signals an error.
3006 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3007 during macroexpansion for non-iteration variables as well. (reported
3008 by Bruno Haible for CMUCL)
3009 * bug fix: Cyclic structures and unprintable objects in compiler
3010 messages no longer cause errors. (reported by Bruno Haible)
3011 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3012 and READ-FROM-STRING all now return a primary value of NIL if
3013 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3014 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3015 (reported by Bruno Haible for CMUCL)
3016 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3017 do not designate a condition. (reported by Bruno Haible for
3019 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3020 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3021 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3022 permitting resolution in favour of any of the conflicting symbols.
3023 (reported by Bruno Haible for CMUCL)
3024 * bug fix: EQUAL compiler optimizations is less aggressive on
3025 strings which can potentially compare true despite having distinct
3026 specialized array element types.
3027 * bug fix: unit enumerations can be defined without dividing by
3028 zero. (thanks to Vincent Arkesteijn)
3029 * FORMAT compile-time argument count checking has been enhanced.
3030 (report from Bruno Haible for CMUCL)
3031 * a partial workaround for the bug 262: the compiler does not try to
3032 inline-expand a local function doing RETURN-FROM from a deleted
3033 BLOCK. (thanks to Peter Denno for the bug report and to David
3034 Wragg for the simple test case)
3035 * fixed some bugs revealed by Paul Dietz' test suite:
3036 ** RENAME-PACKAGE allows all package designators as new package
3038 ** constraint propagation and lambda variable substitution are
3039 more cautious in dealing with partially deleted code.
3040 ** compiler sometimes lost reoptimization passes.
3041 ** CERROR, given a condition as condition designator, passes its
3042 remaining arguments to the continue format control without
3044 ** Case-altering FORMAT directives work correctly on non-ASCII
3046 ** The REAL type specifier handles bounds outside the floating
3047 point ranges without signalling FLOATING-POINT-OVERFLOW.
3048 ** Functions with IR1-transformations can create intercomponent
3049 references to global functions.
3050 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3052 ** FORMAT ~R treats a nil value for its first parameter correctly.
3054 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3055 * enhancement: saving cores with foreign code loaded is now
3056 supported on x86/NetBSD and sparc/Linux in addition to the previously
3057 supported platforms.
3058 * bug fix: on some platforms repeated installations caused multiple
3059 copies of HTML documentation to be installed -- should not happen
3060 any more. (reported by Stefan Scholl)
3061 * bug fix: parsing self-recursive alien record types multiple times
3062 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3063 original patch by Helmut Eller for CMUCL)
3064 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3065 (thanks to Richard Kreuter)
3066 * bug fix: defining classes whose accessors are methods on existing
3067 generic functions in other (locked) packages no longer signals
3068 bogus package lock violations. (reported by François-René Rideau)
3069 * bug fix: special variables as DEFMETHOD parameters no longer have
3070 associated bogus type declarations. (reported by David Wragg and
3072 * bug fix: read-write consistency on streams of element-type
3073 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3074 * bug fix: redefiniton of the only method of a generic function with
3075 no DEFGENERIC no longer emits a full WARNING. In addition,
3076 redefinition of generic functions with no DEFGENERIC to an
3077 incompatible lambda list now signals an error. (thanks to Zach
3079 * bug fix: DEFGENERIC now works even when there's a function of the
3080 same name in an enclosing lexical environment. (thanks to Zach
3082 * fixed compiler failure, caused by instrumenting code during
3083 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3084 * optimization: added loop analysis and improved register allocation
3085 * fixed some bugs revealed by Paul Dietz' test suite:
3086 ** POSITION on displaced vectors with non-zero displacement
3087 returns the right answer.
3088 ** (SIMPLE-STRING) is a valid type specifier for sequence
3090 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3092 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3093 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3095 ** The justification version of the FORMAT ~< directive treats
3096 non-zero minpad parameter correctly.
3098 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3099 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3100 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3101 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3102 the supported interface.
3103 * new feature: Single-stepping of code compiled with DEBUG 2 or
3104 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3105 * new feature: saving cores with foreign code loaded is now
3106 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3107 Timothy Moore's work for CMUCL)
3108 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3109 parameters to * instead of NIL if no initform is supplied.
3110 (reported by Johan Bockgaard)
3111 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3112 correctly when FUNCALL appears as the car of the form. Note:
3113 despite this FUNCALL forms are not currently subject to
3114 compiler-macro expansion. (port of Raymond Toy's fix for the
3115 same from CMUCL, reported by Johan Bockgaard)
3116 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3117 (thanks for Teemu Kalvas)
3118 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3119 case instead of terminating the iteration (thanks for Julian
3120 Squires, Sean Champ and Raymond Toy)
3121 * bug fix: incorrect expansion of defgeneric that caused a style
3122 warning. (thanks for Zach Beane)
3123 * bug fix: slot accessor effective method computation works properly
3124 for classes with multiple non-standard applicable methods on
3125 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3126 * on x86 compiler supports stack allocation of results of LIST and
3127 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3128 CMUCL implementation by Gerd Moellmann)
3129 * fixed some bugs revealed by Paul Dietz' test suite:
3130 ** FORMAT strings with both the ~<~:;~> form of the justification
3131 directive and pretty-printing directives cause an error.
3133 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3134 * incompatible change: the internal functions
3135 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3136 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3137 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3138 instead of the old functions.
3139 * new feature: on platforms where "dladdr" is available foreign
3140 function names now appear in backtraces. (based on Helmut Eller's
3142 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3143 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3145 * documentation: ASDF manual is now distributed with SBCL.
3146 * bug fix: SBCL can now load its contributed modules with REQUIRE
3147 even if the system-provided entries have been removed from
3148 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3150 * bug fix: backtraces involving undefined functions or assembly
3151 routines are more informative. (thanks to Brian Downing)
3152 * bug fix: mutually referent alien structures now work correctly.
3153 (reported by Rick Taube)
3154 * bug fix: structures defined by WITH-ALIEN can be referred to
3155 within other definitions in the same WITH-ALIEN.
3156 * bug fix: division operators (MOD, TRUNCATE and the like) with
3157 constant zero divisors and integer dividends no longer generate
3159 * bug fix: provide default methods for INPUT-STREAM-P and
3160 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3161 * bug fix: improve the detection and resolution of MOP metacycles
3162 (where effective method computation depends on the generic function
3163 having its effective method computed). (reported by Bruno Haible)
3164 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3165 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3166 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3167 * bug fix: pathnames with relative directory components can be
3168 represented relative to default pathnames.
3169 * optimization: in taking the GCD of bignums, reduce the two bignums
3170 to approximately the same size (using Euclid's algorithm) before
3171 applying the more sophisticated binary GCD. (thanks to Juho
3173 * optimization: COUNT on bitvectors now operates word-at-a-time.
3174 * optimization: ASH with a positive, but not necessarily constant,
3175 (leftwards) shift, when in a modular context, is compiled to a
3177 * fixed some bugs revealed by Paul Dietz' test suite:
3178 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3179 if the corresponding argument is NIL.
3180 ** FORMAT directives accepting a minpad parameter treat negative
3182 ** literal commas as character parameters to FORMAT directives are
3184 ** literal spaces directly after ~<Newline> directives within a
3185 format-logical-block (~:< ~@:>) do not induce :FILL-style
3186 conditional newlines.
3187 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3188 as specified: it no longer includes conditional newlines).
3189 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3191 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3192 :PER-LINE-PREFIX argument does not evaluate to a string.
3194 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3195 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3196 the manual for details; for now, package locks can be disabled by
3197 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3198 if no major problems are found then it is likely that they will be
3199 compiled in unconditionally.
3200 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3201 unsupported operators on all platforms. To load a shared library
3202 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3203 object file, link it into a shared library outside of SBCL and
3204 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3206 * bug workaround: ROOM T and the GC were not working together
3207 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3208 reporting facility aren't preserved. That reporting has been
3209 disabled, so now until and unless someone figures out how to make it
3210 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3211 * minor incompatible change: as threatened around sbcl-0.8.0, the
3212 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3213 The symbols are also exported from SB-PCL for backwards
3214 compatibility, but more so than before SB-PCL should be treated as
3215 an implementation-internal package.
3216 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3218 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3219 It is known as of this release not to work on the Alpha, however.
3220 * fixed bug #167: errors signalled due to illegal syntax in method
3221 bodies are now more legible.
3222 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3223 designators and can hence be used with TYPEP.
3224 * fixed bug #333: CHECK-TYPE now ensures that the type error
3225 signalled, if any, has the right object to be accessed by
3226 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3227 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3228 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3230 * fixed bug #334: programmatic addition of slots using specialized
3231 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3232 and :ALLOCATION :CLASS slots.
3233 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3234 float exponents. (rereported by Peter Seibel)
3235 * fixed a bug: #\Space (and other whitespace characters) are no
3236 longer considered to be macro characters in standard syntax by
3237 GET-MACRO-CHARACTER.
3238 * fixed bug: initialization of condition class metaobjects no longer
3239 causes an instance of the condition to be created. (reported by
3241 * fixed bug: it is now possible to have slots such that
3242 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3243 description is neither :INSTANCE nor :CLASS.
3244 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3245 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3246 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3247 non-standard SLOT-DEFINITION-ALLOCATION values.
3248 * fixed bugs: various race conditions handling exiting threads.
3249 CL-PPCRE's thread torture test now passes.
3250 * fixed arguably-a-bug: GC time proportional to number of threads in
3251 system even when most of them are idle
3252 * optimization: improved performance of BIT and SBIT on bit-vectors.
3253 * .fasl file incompatibility: The fasl file version number has
3254 been incremented because of changes associated with package locks.
3256 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3257 * minor incompatible change: the system no longer provides
3258 optimization hints (conditions which are TYPEP
3259 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3260 mode; these hints are still emitted when higher SPEED optimization
3262 * new contrib module: a sampling profiler (profiling by statistical
3263 sampling, rather than by instrumenting functions) is available as
3264 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3265 * the behaviour of the standard function ED is now customizeable by
3266 third parties through a hook variable: see ED's documentation
3267 string for information on the protocol.
3268 * the compiler no longer emits efficiency notes for (FUNCALL X)
3269 when the type of X is uncertain under default optimization
3271 * fixed bug 276: mutating a binding of a specialized parameter to a
3272 method to something that is not TYPEP the specializer is now
3274 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3275 exhibit the required behaviour on the x86 platform. (thanks to
3276 Peter van Eynde, Eric Marsden and Bruno Haible)
3277 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3278 even for difficult arguments. (reported by Peter Graves)
3279 * fixed bug 141a: the backquote printer now descends quoted
3281 * fixed another bug in backquote printing: no more destructive
3282 modification of the form's list structure. (reported by Brian
3284 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3285 move between its address being taken and the call to
3286 interrupt_thread, fixing a crashing race condition.
3287 * the SB-POSIX contrib implementation has been adjusted so that it
3288 no longer exhibits ridiculously poor performance when constructing
3289 instances corresponding to C structs.
3291 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3292 * minor incompatible change: the sb-grovel contrib now treats C
3293 structures as alien (in the sense of SB-ALIEN) objects rather than
3294 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3295 has implications for memory management of client code
3296 (sb-grovel-returned objects must now be manually managed) and for
3297 type safety (alien objects now have full types).
3298 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3299 used to control emission of compiler diagnostics, rather than the
3300 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3301 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3302 quality should be considered deprecated.
3303 * install.sh now installs the user manual as well
3304 * (not quite a new documentable feature, but worth considering in
3305 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3306 beginnings of a semantically meaningful condition hierarchy is
3307 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3309 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3310 designator as the defaults argument.
3311 * fixed bug: Displaced arrays whose displaced-to array has become
3312 too small now cause ARRAY-DIMENSION to signal an error, providing
3313 for safer bounds-checking. (reported by Bruno Haible)
3314 * fixed bug: DEFCLASS slot definitions with identical :READER and
3315 :WRITER names now signal a reasonable error. (reported by Thomas
3317 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3319 * fixed bug: Invalid slot specification errors now print correctly.
3320 (thanks to Zach Beane)
3321 * fixed bug 320: Shared to local slot value transfers in class
3322 redefinitions now happen corrently from superclasses as
3323 well. (reported by Bruno Haible)
3324 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3326 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3327 improper lists correctly. (reported by Bruno Haible)
3328 * fixed bug 313: source-transform for <fun-name> was erroneously
3329 applied to a call of a value of a variable with name <fun-name>.
3330 (reported by Antonio Menezes Leitao)
3331 * fixed bug 307: The obsolete instance protocol ensures that
3332 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3333 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3334 remove dead unknown-values globs from the middle of the stack.
3335 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3336 easier to resume long computations after using *BREAK-ON-SIGNALS*
3337 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3338 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3339 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3340 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3341 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3342 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3344 * fixed a (fairly theoretical) bug in string printing: if
3345 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3346 does not have array-element-type equal to the most general string
3348 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3349 function name. (thanks to Nikodemus Siivola)
3350 * fixed bug: compile-time format string checker failed on
3351 non-closed ~{. (reported by Thomas F Burdick)
3352 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3353 don't warn on legal loop code involving more than one aggregate
3354 boolean. (thanks to Nikodemus Siivola)
3355 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3356 in keyword position to MAKE-PACKAGE was not being reported as
3358 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3359 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3361 * fixed bugs 280 and 312: the checking for multiple definitions in a
3362 file is less likely to become confused by uses of inline
3364 * fixed bug: the #S reader macro performs the keyword coercion
3365 specified for slot names. (reported by Kalle Niemitalo)
3366 * fixed bug: lambda lists may contain symbols whose names start with
3367 & but are not lambda-list-keywords; their occurrence triggers a
3369 * fixed bug 321: define-method-combination argument lambda lists do
3370 not cause invalid code to be generated when &optional or &aux
3371 variables have default values. (reported by Bruno Haible)
3372 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3373 have CLOS classes; this appears also to have fixed reported
3374 instability in stack exhaustion detection.
3375 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3376 MUFFLE-WARNING when no associated restart is present is now
3378 * optimization: rearranged the expansion of various defining macros
3379 so that each expands into only one top-level form in a
3380 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3382 * optimization: used a previously little-used slot in symbols to
3383 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3385 * fixed some bugs revealed by Paul Dietz' test suite:
3386 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3388 ** Fixed an optimization bug related to inheritance of initforms
3389 from local to shared slots.
3390 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3391 ** CAST optimizer forgot to flush argument derived type.
3392 ** print/read consistency on floats is now orders of magnitude
3393 more likely. (thanks also to Bruno Haible for a similar report
3395 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3396 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3397 for objects of type REAL. Make it so.
3398 ** SXHASH is specified (infelicitously) to respect similarity,
3399 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3400 it so. (thanks to Markus Ziegler)
3401 ** on the Alpha, the compiler succeeds in compiling functions
3402 returning a known number of arguments greater than 63.
3403 ** fixed handling of invalid NIL arguments in keyword position
3405 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3407 ** provided a readably-printable representation for RANDOM-STATE
3409 ** ensured that pathnames, where they have a namestring, always
3410 print using #P"..." syntax.
3412 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3413 * Support for the forthcoming 2.0 version of the NetBSD kernel
3414 running on x86 hardware has been added. (thanks to Perry
3415 E. Metzger most immediately, and others for their past work)
3416 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3417 current release version; SBCL's OpenBSD support had been broken
3418 since about the time of OpenBSD's switch to ELF binary format.)
3419 * [placeholder for DX summary]
3420 ** user code with &REST lists declared dynamic-extent, under high
3421 speed or space and low safety and debug optimization policy.
3422 * The manual has been converted to Texinfo format and the debugger
3423 chapter from the cmucl manual has been added.
3424 * A facility has been added to extract documentation strings from
3425 sbcl and store them as Texinfo-formatted snippets for inclusion in
3426 the manual (via Texinfo's @include directive)
3427 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3428 the test case to Dave Roberts)
3429 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3430 pointers. (reported by Sean Ross)
3431 * bug fix: PROFILE output is printed nicely even for large numerical
3432 values. (thanks to Zach Beane)
3433 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3434 greater than 32 handle EOF correctly.
3435 * bug fix: on X86 an immediate argument of the IMUL instruction is
3436 correctly printed in disassembly. (thanks to Lutz Euler)
3437 * bug fix: class slots in redefined classes preserve their old
3438 values. (thanks to Bruno Haible and Nikodemus Siivola)
3439 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3440 succeeds. (reported by Marco Baringer)
3441 * fixed some bugs revealed by Paul Dietz' test suite:
3442 ** READ-SEQUENCE now works on ECHO-STREAMs.
3443 ** RATIONALIZE works more according to its specification. (thanks
3446 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3447 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3448 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3449 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3450 should matter to you only if you rebind the printer control
3451 variables and then find you want different bindings in the
3452 debugger than in the ordinary execution of your program.)
3453 * The runtime build system has been tweaked to support building
3454 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3455 assembler and linker. (thanks to Nikodemus Siivola)
3456 * Unbound, undefined, undeclared variables now trigger full
3457 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3458 more often programmer error than deliberate exploitation of undefined
3460 * optimization: the hash algorithm for strings has changed to one
3461 that is less vulnerable to spurious collisions. (thanks to Juho
3463 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3464 needless bounds checking. (thanks to Juho Snellman)
3465 * optimization: implemented multiplication as a modular
3466 (UNSIGNED-BYTE 32) operation on the PPC backend.
3467 * fixed some bugs revealed by Paul Dietz' test suite:
3468 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3470 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3471 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3472 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3474 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3476 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3478 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3479 their output stream on EOF from read.
3480 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3481 have been read to end-of-file.
3482 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3484 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3485 description of determination of which consecutive characters
3487 ** Printing the "Space" character with escaping on now yields "#\\ ",
3488 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3489 ** Reading floating-point numbers with *READ-BASE* set to a number
3490 less than 10 works correctly.
3491 ** Reading floating-point numbers with *READ-BASE* set to a number
3492 more than 10 works correctly.
3493 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3494 the readtable currently in effect.
3496 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3497 * minor incompatible change: parsing of namestrings on a physical
3498 (Unix) host has changed; numbers after the final #\. in a
3499 namestring are no longer interpreted as a version field. This is
3500 intented to be largely invisible to the user, except that the
3501 meaning of the namestring "*.*.*" has changed: it now refers to a
3502 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3503 should usually be replaced by
3504 (make-pathname :name :wild :type :wild :version :wild)
3505 with the added benefit that this is more likely to be portable.
3506 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3507 option to OPEN now signals an error if the file being opened
3508 exists; this may have an impact on existing code.
3509 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3510 signals received, on the PowerPC platforms (both Linux and
3511 Darwin). (thanks to Pierre Mai for pointing out the location of
3513 * several fixes on OS X: The system now builds and runs cleanly on
3514 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3515 (thanks to Brian Mastenbrook)
3516 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3517 second-resolution: integer multiples of 1/3600 between -24 and 24.
3518 (thanks to Vincent Arkesteijn)
3519 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3520 type when called with 1 argument; PEEK-CHAR checked type of
3521 PEEK-TYPE only after having read first character from a
3522 stream. (reported by Peter Graves)
3523 * bug fix: the garbage collector now has much better locality
3524 behaviour, and in particular no longer treats all memory as being
3525 exhausted when many small objects point to each other in a deeply
3527 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3528 recognized as being TYPEP their class.
3529 * bug fix: the PUSHNEW documentation string has been corrected.
3530 (thanks to Vincent Arkesteijn)
3531 * bug fix: defaulting of the value for the last of an atypically
3532 large number of multiple values being bound was not being
3533 performed correctly on the Alpha or PPC platforms
3534 * optimization: implemented multiplication as a modular
3535 (UNSIGNED-BYTE 32) operation on the x86 backend.
3536 * optimization: SEARCH on simple-base-strings can now be open-coded.
3537 (see also contrib/compiler-extras.lisp for inspiration for
3538 teaching the compiler about the Boyer-Moore algorithm).
3539 * value, returned by MAX (and MIN) called with several EQUALP, but
3540 not EQL, arguments now does not depend on compiler settings.
3541 * fixed some bugs revealed by Paul Dietz' test suite:
3542 ** in stack analysis liveness information is propagated from
3543 non-local entry points.
3544 ** pathwise CAST removing failed when the CAST node did not start
3546 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3547 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3549 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3550 host is already defined.
3551 ** RENAME-FILE works on streams instead of signalling an internal
3553 ** PEEK-CHAR uses the current readtable when determining whether
3554 or not a character is whitespace.
3555 ** MERGE-PATHNAMES handles the case when the pathname does not
3556 specify a name while the default-pathname specifies a version.
3557 ** Pathnames now stand a better chance of respecting print/read
3559 ** Attempting to use standardized file system operators with a
3560 pathname with invalid :DIRECTORY components signals a
3562 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3564 ** DIRECTORY on logical pathnames is more correct.
3565 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3566 signal a TYPE-ERROR if their argument is not a stream.
3567 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3568 designator argument does not designate a stream.
3569 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3570 examining the synonym.
3571 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3573 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3574 element-type larger than ([UN]SIGNED-BYTE 32).
3576 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3577 * When built with the :SB-FUTEX feature, threaded builds now take
3578 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3579 for faster/more reliable mutex and condition variable support.
3580 * Incompatible change (but one you probably shouldn't have been using
3581 anyway): the interface and code for arbitrating between multiple
3582 threads in the same user session has been redesigned.
3583 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3584 error when called without an explicit environment argument.
3585 (thanks to Nikodemus Siivola)
3586 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3587 confused about their position. (thanks to Adam Warner and Gerd
3589 * bug fix: Pretty printing backquoted forms with unquotations in the
3590 argument list position of various code constructs such as LAMBDA
3591 now works correctly. (reported by Paul Dietz)
3592 * bug fix: Pretty printing unquotations no longer loses all
3593 stream position information.
3594 * optimization: performance of string output streams is now less
3595 poor for multiple small sequence writes.
3596 * optimization: performance of CSUBTYPEP in the presence of complex
3597 expressions involving CONS and NOT many times has been improved.
3598 (reported by Paul Dietz)
3599 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3601 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3602 streams for the REPL, for the debugger, and so on. (thanks to
3604 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3605 * fixed some bugs revealed by Paul Dietz' test suite:
3606 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3607 is ignored if it is too small, rather than propagating through
3608 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3609 ** extremely complex negations of CONS types were not being
3610 sufficiently canonicalized, leading to inconsistencies in
3612 ** VALUES tranformer lost derived type.
3614 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3615 * fixed a bootstrapping bug: the build process no longer assumes
3616 that the various BOOLE-related constants have the same value in
3617 host and target lisps. (noted by Paul Dietz' test suite on an
3618 SBCL binary built from CLISP)
3619 * The system can now be dynamically linked on the MIPS platform,
3620 which enables dynamic loading of foreign code from Lisp. (thanks
3621 to Ralf Baechle for discussions on the MIPS ABI)
3622 * The system now records debugging information for its own source
3623 files in a filesystem-position-independent manner, relative to
3624 the "SYS" logical host.
3625 * fixed a compiler bug: MV-LET convertion did not check references
3626 to the "max args" entry point. (reported by Brian Downing)
3627 * tweaked disassembly notes to be less confident about proclaiming
3628 some instruction as an LRA. (thanks to Brian Downing)
3629 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3630 now each have their own history, command character, and other
3631 characteristics. (thanks to David Lichteblau)
3632 * fixed some bugs revealed by Paul Dietz' test suite:
3633 ** compiler failure in compiling LOGAND expressions including a
3635 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3636 shift greater than 32.
3637 ** FLUSH-DEST did not mark blocks for type check regeneration.
3638 ** HANDLER-CASE failed to accept declarations in handler clauses
3639 in some circumstances.
3641 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3642 * New code in contrib/sb-introspect (still probably not entirely
3643 stable yet) provides some support for smart Lisp development
3644 environments like SLIME.
3645 * The conditions signalled for errors occurring when loading .fasl
3646 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3647 in a way which should help ASDF recover gracefully.
3648 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3649 stuff has been cleaned up. If you code contrib/ stuff, this might
3650 affect you, and you can look at contrib/README, contrib/STANDARDS,
3651 and/or the 0.8.4.27 diff to check.
3652 * In full calls the compiler now does not generate checks for declared
3653 argument types for all arguments.
3654 * various threading fixes
3655 ** and some experimental patches which didn't make it into
3656 the main tree for this release, but which are shipped in
3657 contrib/experimental-thread.patch as a possible fix for some
3658 failures (deadlock, spinning...) in GC-intensive multithreaded
3660 * fixed PPC build problem (source code incompatibility of different
3661 library versions): added offsetof() hackery which attempts to divine
3662 where glibc maintainers put uc_mcontext today
3663 * fixed bug 282: compiler does not trust type assertions while passing
3664 arguments to a full call.
3665 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3666 &OPTIONAL VALUES type parameter.
3667 * fix bug 214: algorithm for noting rejected templates is now more
3668 similar to that of template seletion. (also reported by rydis on
3670 * fixed bug 141b: printing backquoted information readably and prettily
3671 inserts a space where necessary.
3672 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3673 (CHARACTER 10) are now reported as errors, rather than propagated
3674 as unknown types. (reported by piso on #lisp)
3675 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3676 with values NIL and :ERROR. (thanks to Milan Zamazal)
3677 * fixed bug 191c: CLOS now does proper keyword argument checking as
3678 described in CLHS 7.6.5 and 7.6.5.1.
3679 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3680 longer raise an error; further, using a list as a for-as-arithmetic
3681 counter now raises a meaningful error.
3682 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3683 now understood by sequence creation functions such as MAKE-SEQUENCE
3685 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3686 a STRING-INPUT-STREAM.
3687 * compiler enhancement: SIGNUM is now better able to derive the type
3689 * type declarations inside WITH-SLOTS are checked. (reported by
3691 * fixed some bugs revealed by Paul Dietz' test suite:
3692 ** incorrect optimization of TRUNCATE for a positive first
3693 argument and negative second.
3694 ** compiler failure in let-convertion during flushing dead code.
3695 ** compiler failure while deriving type of TRUNCATE on an
3696 interval, containing 0.
3697 ** ASH of a negative bignum by a negative bignum count now returns
3699 ** intersection of CONS types now canonicalizes properly, fixing
3700 inconsistencies in SUBTYPEP.
3702 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3703 * incompatible change: The --disable-debugger command line
3704 option now clobbers the debugger at a more fundamental
3705 level, by redefining #'INVOKE-DEBUGGER instead of by
3706 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3707 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3708 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3709 enter the debugger REPL and then suffer recursive errors
3710 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3711 while under the new system, BREAK in --disable-debugger mode
3712 terminates the system just as an unhandled error would.
3713 * fixed compiler performance when processing loops with a step >1;
3714 * bug fix: DOCUMENTATION now retrieves generic function
3715 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3716 support has been systematized, and now supports the methods
3717 specified by ANSI, along with a default method and a method for
3718 slot documentation. (reported by Nathan Froyd)
3719 * bug fix: effective methods associated with a generic function are
3720 no longer cached over a change of that generic function's method
3721 combination. (reported by Andreas Fuchs)
3722 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3723 names a non-existent directory. (thanks to Andreas Fuchs)
3724 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3725 the PPC platform, lead to stack corruption; this has been fixed.
3726 (reported by Rainer Joswig)
3727 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3728 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3729 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3730 arithmetic in general, is now much more reliable on the PPC
3732 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3733 platform now returns the right answer.
3734 * optimization: restored some effective method precomputation in
3735 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3736 precomputation is now tunable.
3737 * optimization: compiler-internal data structure use has been
3738 reviewed, and changes have been made that should improve the
3739 performance of the compiler by about 20%.
3740 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3741 simple-base-strings and simple-bit-vectors is improved.
3742 * optimization: the optimization of 32-bit logical and arithmetic
3743 functions introduced in version 0.8.3 on the x86 has been
3744 implemented on the mips, ppc and sparc platforms; an
3745 implementation of the same facility, but for 64-bit arithmetic,
3746 has been added for the alpha.
3747 * microoptimization: the compiler is better able to make use of the
3748 x86 LEA instruction for multiplication by constants.
3749 * bug fix: in some situations compiler did not report usage of
3750 generic arithmetic in (SPEED 3) policy.
3751 * bug 145b fix: compiler used wrong type specifier while converting
3752 MEMBER-types to numeric.
3753 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3755 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3756 index argument now works properly on the Alpha platform.
3757 * bug fix: floating point exception treatment on the Alpha platform
3759 * bug fix: FILE-POSITION works much better on string input and
3760 output streams. (thanks to Nikodemus Siivola)
3761 * bug fix: many threading/garbage collection symptoms sorted.
3762 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3763 might be pseudo-atomic.
3764 * internal change: Stopping for GC is now done with signals not
3765 ptrace. GC is now done in whichever thread wanted it, instead of
3767 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3769 * bug fix: result form in DO is not contained in the implicit
3771 * incompatible change: ICR structure is changed; the value part of
3772 CONTINUATION is now called LVAR; corresponding functions are
3773 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3774 * added type deriver for ISQRT (thanks to Robert E. Brown).
3775 * bug fix: better support for loading from the command line when an
3776 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3778 * fixed some bugs revealed by Paul Dietz' test suite:
3779 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3780 ** ROUND and FROUND now give the right answer when given very
3781 small float arguments.
3782 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3784 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3785 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3786 ** LCM should return a non-negative integer.
3787 ** PARSE-INTEGER returned the index of a terminator instead of the
3788 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3789 ** PARSE-INTEGER returned an incorrect index being applied to a
3791 ** LCM with two arguments of 0 returns 0 rather than signalling
3793 ** unsigned addition of a 32-bit constant with the high bit set no
3794 longer causes an internal compiler error on the x86.
3795 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3796 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3797 with negative last argument.
3798 ** byte specifiers with zero size and position no longer cause
3799 an error during type derivation.
3800 ** bignum multiplication on the Alpha platform now returns the
3802 * porting: The system now builds on SuSE AMD64, although it still
3803 generates a 32-bit binary.
3804 * .fasl file incompatibility: The fasl file version number has
3805 been incremented (because of the changes to internal compiler
3806 data structures referred to above).
3808 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3809 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3810 more accurately, on the Darwin kernel running on PowerPC hardware.
3811 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3812 * Compiler code deletion notes now signal a condition of type
3813 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3814 an associated MUFFLE-WARNING restart.
3815 * The compiler now performs limited argument count validation of
3816 constant format strings in FORMAT, and where appropriate in ERROR,
3817 CERROR and WARN. (thanks to Gerd Moellmann)
3818 * New ASDF-INSTALL contrib can be used for automatic download and
3819 installation of third-party Lisp code from CCLAN or other sites
3821 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3822 which forces another thread to execute a function supplied by the
3824 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3825 now accept and act upon their :ELEMENT-TYPE keyword argument.
3826 (reported by Martin Atzmueller, Edi Weitz)
3827 * bug fix: FILE-POSITION now accepts position designators up to
3828 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3829 is the greater. (thanks to Patrik Nordebo)
3830 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3831 Kalle Olavi Niemitalo)
3832 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3833 printable. (reported by Eric Marsden)
3834 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3835 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3836 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3837 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3838 (thanks to Stig Sandoe)
3839 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3840 UNREAD-CHAR now correctly includes the unread character in the
3841 target sequence. (thanks to Gerd Moellmann)
3842 * bug fix in threaded builds: the system can now be suspended and
3843 resumed by shell job control with minimal disruption.
3844 * bug fixes in times and timezones >2038AD
3845 * better handling of "where is GNU make?" problem in build scripts
3846 (thanks to Nikodemus Siivola)
3847 * new optimization: inside a named function any reference to a
3848 function with the same name is considered to be a self-reference;
3849 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3850 optimization quality.
3851 * new optimization on x86: logical functions and + now have
3852 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3853 used when the result is truncated to 32 bits.
3854 * VALUES declaration is partially enabled.
3855 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3856 * fixed some bugs revealed by Paul Dietz' test suite:
3857 ** The system now obeys the constraint imposed by
3858 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3859 types form a lattice under type intersection.
3860 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3861 ** ASSOC now ignores NIL elements in an alist.
3862 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3863 and (1+ MOST-POSITIVE-FIXNUM) answers.
3864 ** The addition of a method with invalid qualifiers to a generic
3865 function does not cause an error to be signalled immediately;
3866 a warning is signalled, and the error is generated only on
3867 calling the generic function.
3868 * changed .fasl file version number, in part to add type codes for
3869 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3870 obscure ANSI requirements
3872 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3873 * fixed bug 148: failure to inline-expand a local function left
3874 garbage, confusing the compiler.
3875 * fixed bugs 3cd: structure slot readers perform type check if the
3876 slot can have an invalid value (i.e. it is either not initialized
3877 or can be written with a less specific slot writer).
3878 * bug fix: the compiler now traps array references to elements off
3879 the end of an array; previously, the bounds checking in some
3880 circumstances could go off-by-one.
3881 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3883 * type declarations for array element types now obey the description
3884 on the CLHS page "Declaration TYPE", as per discussions on
3885 sbcl-help around 2003-05-08. This means that a declaration
3886 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3887 declaration, all references to BAR will be asserted or assumed
3888 (with THE, so dependent on compiler policy) to involve objects of
3889 type FOO. Note that no such declaration is implied in
3890 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3891 * declared types of functions from the "Conditions"
3892 chapter. (reported by Paul Dietz)
3893 * bug fix: CERROR accepts a function as its first argument.
3894 * bug fix: NTH an NTHCDR accept a bignum as index
3895 arguments. (reported by Adam Warner)
3896 * optimization: character compare routines now optimize comparing
3897 against a constant character. (reported by Gilbert Baumann)
3898 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3899 argument now works properly on the MIPS platform.
3900 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3901 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3902 declared to have a functional type, does not cause an error
3904 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3905 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3906 * fixed bug: if last continuation of a deleted block has a
3907 destination, this destination should be deleted too. (reported by
3909 * fixed a bug in the bootstrap process: the host compiler's values
3910 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3911 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3912 test case from Patrik Nordebo)
3913 * improved the ability of the disassembler on the PPC platform to
3914 provide helpful disassembly notes.
3915 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3916 the class in more cases than previously.
3917 * bug fix: FILE-POSITION now understands :START and :END for
3918 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3919 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3920 8) data. (thanks to David Lichteblau)
3921 * bug fix: it is possible to add a method to a generic function
3922 without lambda list.
3923 * bug fix: reader failed to signal END-OF-FILE inside an
3924 object representation. (reported by Nikodemus Siivola)
3925 * fixed some bugs revealed by Paul Dietz' test suite:
3926 ** LAST and [N]BUTLAST should accept a bignum.
3927 ** condition slot accessors are methods.
3928 ** (VECTOR NIL) is a subtype of STRING.
3930 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3931 * minor incompatible change: some nonsensical specialized lambda
3932 lists (used in DEFMETHOD) which were previously ignored now signal
3934 * minor incompatible change: the system is now aware of the types of
3935 variables in the COMMON-LISP package, and will signal errors for
3936 most violations of these type constraints (where previously they
3937 were silently accepted).
3938 * minor incompatible change: COMPILE-FILE now uses the freedom
3939 afforded (ANSI 3.2.2.3) to use derived function types for
3940 functions defined in the same file. This also permits the system
3941 to warn on static type mismatches and function
3942 redefinition. (Currently it does not work with high DEBUG level.)
3943 * minor incompatible change: VALUES declaration is disabled.
3944 * When issuing notes, the compiler now signals a condition of type
3945 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3946 restart for use in user handlers. It is expected that the
3947 COMPILER-NOTE condition will eventually become a condition
3948 supertype to a hierarchy of note types, which will then be
3949 handleable in a similar fashion. However, at the moment, no such
3950 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3951 but it's an implementation detail, not a classification for the
3953 * Changes in type checking closed the following bugs:
3954 ** type checking of unused values (192b, 194d, 203);
3955 ** template selection based on unsafe type assertions (192c, 236);
3956 ** type checking in branches (194bc).
3957 * A short form of VALUES type specifier has ANSI meaning (it has
3958 increased the number of situations when SBCL cannot perform type
3960 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3961 keywords or constants is permissible.
3962 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3963 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3964 classes. (thanks to Antonio Martinez)
3965 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3966 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3967 argument to a pretty-print stream. Instead, it leaves any such
3968 operations to DESCRIBE-OBJECT methods.
3969 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3971 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3972 lambda lists. (thanks to David Lichteblau)
3973 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3974 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3975 (thanks to Gerd Moellmann)
3976 * fixed bug 246: increased compilation speed of long
3977 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3979 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3981 * DEFCONSTANT now throws a condition of type
3982 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3983 constant to a non-EQL value; CONTINUE and ABORT restarts
3984 respectively change and preserve the value.
3985 * fixed bug 63: The code walker, part of the implementation of CLOS,
3986 is now better at handling symbol macros.
3987 * bug fix: There is no longer an internal implementation type named
3988 CL:LENGTH. (reported by Raymond Toy)
3989 * bug fix: In macro-like defining macros/special operators the
3990 implicit block does not enclose the lambda list.
3991 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3992 enclosed in parentheses) are not suitable as type specifiers, and
3993 their use properly signals an error now.
3994 * bug fix: An argument count mismatch for a type specifier in code
3995 being compiled no longer causes an unhandled error at compile
3996 time, but signals a compile-time warning.
3997 * fixed simple vector readable printing
3998 * bug fix: DESCRIBE takes more care over whether the class
3999 precedence list slot of a class is bound before accessing it.
4000 (reported by Markus Krummenacker)
4001 * bug fix: FORMATTER can successfully compile pretty-printer format
4002 strings which use variants of the ~* directive inside.
4003 * bug fix: SEARCH now applies its TEST predicate to the elements of
4004 the arguments in the correct order. (thanks to Wolfhard Buss)
4005 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4006 in type inference. (thanks to Robert E. Brown)
4007 * bug fix: Reading in symbols with an explicit package name of ""
4008 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4009 * fixed some bugs revealed by Paul Dietz' test suite:
4010 ** NIL is now allowed as a structure slot name.
4011 ** Arbitrary numbers, not just REALs, are allowed in certain
4012 circumstances in LOOP for-as-arithmetic clauses.
4013 ** Multiple class redefinitions before slot access no longer
4014 causes a type error.
4015 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4016 association between the name and a class.
4017 ** Generic functions with non-standard method-combination and over
4018 five methods all of which return constants no longer return NIL
4019 after the first few invocations. (thanks to Gerd Moellmann)
4020 ** CALL-NEXT-METHOD with no arguments now passes the original
4021 values of the arguments, even in the presence of assignment.
4022 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4024 ** DISASSEMBLE works with closures and funcallable instances.
4025 ** ADD-METHOD now returns the generic function, not the new method.
4026 ** FIND-METHOD signals an error if the lengths of the specializers
4027 is incompatible with the generic function, even if the ERRORP
4029 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4030 which its argument is a member.
4031 ** DEFCLASS only redefines the class named by its class-name
4032 argument if that name is the proper name of the class;
4033 otherwise, it creates a new class.
4034 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4035 of the UNBOUND-SLOT condition to the name of the slot.
4036 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4037 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4038 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4039 SLOT-MAKUNBOUND in the specified fashion.
4041 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4042 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4043 cross-compilation host. As a consequence, we can now bootstrap our
4044 way up to SBCL starting with a bare gcc toolchain and human-readable
4045 source code (first the source to CLISP, then the source to SBCL).
4046 * A contributed module containing a partial implementation of the
4047 simple-streams interface has been included. (thanks to Rudi
4049 * A contributed module implementing the RFC1321 Message Digest
4050 Algorithm, known as MD5, has been included.
4051 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4052 no longer has any effect, as the code controlled by this feature
4053 has been deleted. (As far as we know, no-one has ever built using
4054 this feature, and its semantics were confused in any case).
4055 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4056 work on conditions (as required by the ANSI specification),
4057 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4058 expected behaviour on conditions. Users should note, however,
4059 that such behaviour is not required by the ANSI specification,
4060 and so use of this behaviour may render their code unportable.
4061 * fixed some bugs revealed by Paul Dietz' test suite:
4062 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4064 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4065 ** SXHASH on condition objects no longer returns NIL.
4066 ** :ALLOCATION :CLASS slots are better treated; their values are
4067 updated on class redefinition, and initforms inherited from
4068 superclasses are applied.
4069 ** REMOVE-METHOD returns its generic function argument even when
4070 no method was removed.
4071 ** SHARED-INITIALIZE now initializes the values of the requested
4072 slots, including those with :ALLOCATION :CLASS.
4073 ** ALLOCATE-INSTANCE now works on structure classes defined via
4074 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4076 ** SLOT-EXISTS-P now works on conditions, as well as structures
4078 ** MAKE-LOAD-FORM now has the required methods on
4079 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4080 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4081 keyword, and now implements the SLOT-NAMES argument.
4082 ** methods with &OPTIONAL arguments no longer allow too many
4083 arguments to be passed in the call without error.
4084 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4085 option is consistent with the required arguments of the generic
4086 function lambda list.
4087 * bug fix: REQUIRE accepts a string designator. (Thanks to
4089 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4090 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4091 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4092 * bug fix: The compiler now checks for duplicated variables in macro
4094 * bug fix: SETQ on globals returns the correct value.
4095 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4096 not a COMPILER-ERROR (followed by some other strange error on
4097 choosing the CONTINUE restart).
4098 * bug fix: make.sh and friends are now more consistent in the way that
4099 they look for GNU "make".
4101 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4102 * experimental native threads support (on x86 Linux >=2.4 only).
4103 This is not compiled in by default: you need to add :SB-THREAD to
4104 the target features. See the "Beyond ANSI" chapter of the manual
4106 * fix for longstanding nonANSIism: The old distinction between
4107 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4108 The return value from CL:FIND-CLASS is now a CLOS class, and
4109 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4110 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4111 * An interface to the MetaObject Protocol, as described in Kiczales,
4112 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4113 MIT Press, 1991, is available from the SB-MOP package.
4114 * incompatible change: the SB-PCL package should now be considered
4115 a private implementation detail, and no longer a semi-private MOP
4117 * minor incompatible change: due to rearrangement for threads, the
4118 control stack and binding stack are now allocated at arbitrary
4119 addresses instead of being hardcoded per-port. Users affected by
4120 this probably have to be doing advanced things with shared
4121 libraries, and will know who they are.
4122 * minor incompatible change: Previously, all --eval forms used were
4123 processed with READ before any of them were processed with EVAL.
4124 Now each --eval form is processed with both READ and EVAL before
4125 the next --eval form is processed. (Thus package operations like
4126 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4127 work as the user might reasonably expect.)
4128 * minor incompatible change: *STANDARD-INPUT* is now only an
4129 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4131 * minor incompatible change: Y-OR-N-P is now character-oriented,
4132 not line oriented. Also, YES-OR-NO-P now works without errors.
4133 (thanks to Antonio Martinez)
4134 * sb-aclrepl module improvements: an integrated inspector, added
4135 repl features, and a bug fix to :trace command.
4136 * Known functions, which cannot be open coded by the backend, are
4137 considered to be able to check types of their arguments. (fixing
4138 a bug report by Nathan J. Froyd)
4139 * fixed a bug in computing method discriminating functions: It is
4140 now possible to define methods specialized on classes which have
4141 forward-referenced superclasses. (thanks to Gerd Moellmann)
4142 * fixed evaluation order in optional entries (reported by Gilbert
4144 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4145 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4146 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4147 required-by-AMOP NAME argument, as well as CLASS and
4148 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4149 * fixed bug 20: DEFMETHOD can define methods using names that are
4150 not the proper names of classes to designate class specializers.
4151 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4152 Unix file descriptors, instead of blowing up. (thanks to Antonio
4154 * Garbage collection refactoring: user-visible change is that a
4155 call to the GC function during WITHOUT-GCING will not do garbage
4156 collection until the end of the WITHOUT-GCING. If you were doing
4157 this you were probably losing anyway.
4158 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4159 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4160 TYPEP the latter but not the former.
4161 * The compiler issues a full WARNING for calls to undefined functions
4162 with names from the CL package.
4163 * MAP-INTO for a vector destination is open coded. (reported by
4164 Brian Downing on c.l.l)
4165 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4166 documentation string.
4167 * fixed some bugs revealed by Paul Dietz' test suite:
4168 ** COPY-ALIST now signals an error if its argument is a dotted
4170 ** Condition slots are now accessed more correctly in the presence
4171 of multiple initargs for a given slot.
4172 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4173 exclude restarts of the same name associated with a different
4175 ** DEFCLASS of forward-referenced classes with another
4176 forward-referenced class in the superclasses list no longer
4178 ** Condition slots are now initialized once each, not multiple
4179 times. (thanks to Gerd Moellmann)
4180 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4182 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4183 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4184 arguments contain duplicated elements.
4185 ** RESTART-CASE understands local macros.
4186 ** RESTART-CASE associates exactly its own restarts with a condition.
4187 ** ENDP in safe mode checks its argument to be of type LIST.
4188 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4189 in question is unbound.
4190 ** Optimized MAKE-INSTANCE functions no longer cause internal
4191 assertion failures in the presence of duplicate initargs.
4192 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4193 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4194 propagated even in the ctor optimized implementation of
4196 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4198 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4199 * a better implementation of SXHASH on (simple) bit vectors,
4200 measured both in execution speed and in distribution of results
4201 over the positive fixnums, has been installed. Likewise, a better
4202 implementation of EQUAL for simple bit vectors is now available.
4203 * fixed CEILING optimization for a divisor of form 2^k.
4204 * fixed bug 240 (emitting extra style warnings "using the lexical
4205 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4206 by Antonio Martinez)
4207 * fixed SXHASH, giving different results for NIL depending on type
4208 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4209 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4210 variable. (found by Rolf Wester)
4211 * SBCL does not ignore type declarations for special
4212 variables. (reported by rif on c.l.l 2003-03-05)
4213 * some bug fixes in contrib/sb-aclrepl/
4214 * fixed some bugs revealed by Paul Dietz' test suite:
4215 ** a bug in the CONS type specifier, whereby the CAR and CDR
4216 types got intertwined, has been fixed;
4217 ** the type system is now able to reason about the interaction
4218 between INTEGER and RATIO types more completely;
4219 ** APPEND, [N]REVERSE and NRECONC check that those their
4220 arguments, which must be proper lists, are really so;
4221 ** An array specialized to be unable to hold elements has been
4222 implemented, as required -- yes, really -- by ANSI;
4223 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4224 on malformed property lists;
4226 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4227 * incompatible packaging change: in line with Unix convention,
4228 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4229 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4230 * REQUIRE and PROVIDE are now optionally capable of doing something
4231 useful. See the documentation string for REQUIRE.
4232 * infrastructure for a managed SBCL contrib system: contributed
4233 modules in this release include:
4234 ** the ASDF system definition facility;
4235 ** an interface to the BSD Sockets API;
4236 ** an ACL-like convenience interface to the repl;
4237 (thanks to Kevin Rosenberg)
4238 ** an implementation of ROTATE-BYTE, with efficient implementation
4240 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4241 gives a closer approximation to the right answer than previously.
4242 (thanks to Raymond Toy)
4243 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4244 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4245 optional environment arguments, as required by ANSI.
4246 * fixed bugs in other functions taking environment objects, allowing
4247 calls with an explicit NIL environment argument to be compiled
4249 * fixed bug 228: primary return values from
4250 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4251 COMPILE or FUNCTION.
4252 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4253 :TYPE will no longer signal errors on innocuous objects.
4254 * fixed bug 231b: SETQ is better at respecting type declarations in
4255 the lexical environment.
4256 * fixed a bug in DEFCLASS: classes named by symbols with no or
4257 unprintable packages can now be defined.
4258 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4259 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4260 * fixed compiler failure related to checking types of functions.
4261 (reported by Robert E. Brown)
4262 * the compiler is now much more consistent in its error-checking
4263 treatment of bounding index arguments to sequence functions: in
4264 (SAFETY 3) code, errors will be signalled in almost all cases if
4265 invalid sequence bounding indices are passed to functions defined
4266 by ANSI to operate on sequences.
4267 * fixed a bug in the build procedure: documentation of SBCL-specific
4268 packages is now preserved and available in the final Lisp image.
4269 * lifted FDEFINITION lookup out of loops in the implementation of
4270 many list operations. (thanks to Robert E. Brown)
4271 * fixed a bug in the reader: the #n# reader macro now works for
4272 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4273 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4274 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4275 E. Brown and Tony Martinez respectively)
4276 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4277 SLOT-BOUNDP: in particular, it is now able to optimize them much
4278 better, and is now not vulnerable to having packages renamed.
4279 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4280 always called when a slot is not present in an instance. (thanks
4282 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4283 longer signal an error on unreading a character following EOF on
4284 the previous constituent stream. (thanks to Tony Martinez)
4285 * fixed some bugs revealed by Paul Dietz' test suite:
4286 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4287 not just nonnegative fixnums;
4288 ** the logical bit-array operators such as BIT-AND now accept an
4289 explicit NIL for their "opt-arg" argument (to indicate a
4290 freshly-consed result bit-array);
4291 ** ELT now signals an error on an invalid sequence index in safe
4293 ** the type system is now cleverer about negations of numeric
4294 types, and consequently understands the BIGNUM and RATIO types
4296 ** the type system is now cleverer about the interaction between
4297 INTEGER and RATIO types: while bugs still remain, many more
4298 cases are accurately computed;
4299 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4300 if it is in the last clause;
4301 ** CONSTANTLY now correctly returns a side-effect-free function in
4303 ** DECLARE is no longer treated as a special-operator; in
4304 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4305 * incremented fasl file version number due to the change in the
4306 DEFSTRUCT-SLOT-DESCRIPTION structure.
4308 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4309 * minor incompatible change: code processed by the "interpreter" or
4310 EVAL now has a compilation optimization policy of (DEBUG 2)
4311 (changed from (DEBUG 1)) to improve debuggability of interactive
4312 development, and to allow the use of the debug RETURN command in
4314 * an experimental implementation of the RETURN command for the
4315 debugger has been included. (thanks to Frederik Kuivinen)
4316 * fixed bug 62: constraints were not propagated into a loop.
4317 * fixed bug in embedded calls of SORT (reported and investigated by
4319 * fixed some bugs revealed by Paul Dietz' test suite:
4320 ** printing and reading of arrays with some dimensions having
4321 length 0 (thanks to Gerd Moellmann);
4322 ** BOA constructor with &AUX argument without a default value does
4323 not cause a type error;
4324 ** CONSTANTP now returns true for all self-evaluating objects.
4326 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4327 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4328 accessors that are related by inheritance, as specified in the
4329 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4330 Valtteri Vuorikoski)
4331 * The compiler is now able to inline functions that were defined in
4332 a complex lexical environment (e.g. inside a MACROLET).
4333 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4335 * Support for the upcoming FreeBSD-5.0 release has been included.
4336 (thanks to Dag-Erling Smorgrav)
4337 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4338 effect when it is not in a toplevel context.
4339 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4340 stand a better chance of being correct. (thanks to Gerd
4342 * fixed bug in COERCE, which now signals an error on coercing a
4343 rational to a bounded real type which excludes the expected
4345 * The compiler is now able to derive types more accurately from the
4346 COERCE and COMPILE functions.
4347 * fixed bug 223: functional binding is considered to be constant
4348 only for symbols in the CL package.
4349 * fixed bug 231: SETQ did not check the type of a variable being set
4350 (reported by Robert E. Brown)
4351 * A new optimization for MAKE-INSTANCE has been included, fixing
4352 various bugs (including relating to :ALLOCATION :CLASS slots and
4353 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4355 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4356 ** As required by ANSI, LOOP now disallows anonymous collection
4357 clauses such as COLLECT I in conjunction with aggregate boolean
4358 clauses such as THEREIS (= I 1);
4359 ** LOOP now signals an error when any variable is reused in the
4360 same loop (including the potentially useful construct analogous
4361 to WITH A = 1 WITH A = (1+ A);
4362 ** IT is only a special loop symbol within the first clause of a
4363 conditional loop clause;
4364 ** LOOP with a typed iteration variable over a hashtable now
4365 signals a type error iff it should.
4366 * fixed some other bugs revealed by Paul Dietz' test suite:
4367 ** FILE-STREAM now names the class previously known as FD-STREAM;
4368 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4369 argument) no longer signals an error;
4370 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4371 of the slot symbol, rather than using the current package
4372 ((:CONC-NAME "") continues to intern the slot's name in the
4374 * incremented fasl file version number, because of the incompatible
4375 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4376 of the new implementation of DEFINE-COMPILER-MACRO.
4378 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4379 * Support for building SBCL for MIPS platforms running in
4380 little-endian mode has now been checked in, and basic
4381 functionality on said platforms verified.
4382 * minor incompatible change: PCL now records the pathname of a file
4383 in which methods and the like are defined, rather than its
4385 * minor incompatible change: TRUENAME now considers the truename of
4386 a file naming a directory to be the pathname with :DIRECTORY
4387 component indicating that directory.
4388 * minor incompatible change: a NAMED clause in the extended form of
4389 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4390 reason for the previous behaviour is unclear.
4391 * more systematization and improvement of CLOS and MOP conformance
4392 in PCL (thanks to Gerd Moellman and Pierre Mai):
4393 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4395 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4396 primary methods with no specializers;
4397 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4399 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4400 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4401 FORWARD-REFERENCED-CLASSes; error reporting on
4402 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4404 ** SXHASH on CLOS instances now uses a slot internal to the
4405 instance to return different numbers on distinct instances,
4406 while preserving the same return value through invocations of
4408 ** DEFMETHOD signals errors when methods with longer incongruent
4409 lambda lists are added to generic functions;
4410 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4411 CLASS, as specified in AMOP;
4412 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4413 on the order returned by the primary method for classes of
4414 class STANDARD-CLASS;
4415 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4416 * fixed some bugs shown by Paul Dietz' test suite:
4417 ** DOLIST puts its body in TAGBODY;
4418 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4420 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4421 value producing form;
4422 ** if more variables are given to PROGV than values, extra
4423 variables are bound and made to have no value;
4424 ** NSUBSTITUTE on list arguments gets the right answer with
4426 ** ELT signals an error of type TYPE-ERROR when the index argument
4427 is not a valid sequence index;
4428 ** LOOP signals (at macroexpansion time) an error of type
4429 PROGRAM-ERROR when duplicate variable names are found;
4430 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4431 ** FUNCALL of special-operators now cause an error of type
4433 ** PSETQ now works as required in the presence of side-effecting
4434 symbol-macro places;
4435 ** NCONC accepts any object as its last argument;
4436 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4438 ** loop-for-as-package does not require a package to be explicitely
4440 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4442 * fixed bug 166: compiler preserves "there is a way to go"
4443 invariant when deleting code.
4444 * fixed bug 172: macro lambda lists with required arguments after
4445 &REST arguments now cause an error to be signalled. (thanks to
4447 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4448 bug. (thanks to Matthew Danish)
4449 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4451 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4452 arguments are lexically rebound. (thanks to Gerd Moellmann and
4454 * fixed bug 194: error messages are now more informative when there
4455 is no primary method applicable in a call to a generic
4456 function. (thanks to Gerd Moellmann)
4457 * fixed bug in command line argument checking (thanks to Julian
4459 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4460 (thanks to Matthew Danish)
4461 * incremented fasl file version number, because of the
4462 SXHASH-related changes in the layout of CLOS data structures
4464 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4465 * minor incompatible change: The runtime (the Unix executable named
4466 "sbcl") is now much pickier about the .core files it will load.
4467 Essentially it now requires .core files to descend from the same
4468 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4469 as the runtime does. (The intent is to prevent the crashes which
4470 can occur, and which can even be reported as mysterious failures,
4471 when people patch the sources or change the build parameters
4472 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4473 sbcl and .core files.)
4474 * fixed bug: VALUES-LIST is no longer optimized away.
4475 * fixed bug 142: The FFI conversion of C string values to Lisp
4476 string values no longer conses excessively. (thanks to Nathan
4477 Froyd porting Raymond Toy's fix to CMU CL)
4478 * began to systematize and improve MOP conformance in PCL (thanks to
4479 Nathan Froyd, Gerd Moellman and Pierre Mai):
4480 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4482 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4483 ** FINALIZE-INHERITANCE is now called on class finalization;
4484 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4485 argument precedence order.
4486 * fixed bug 202: The compiler no longer fails on functions whose
4487 derived types contradict their declared type.
4488 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4489 so it can be non-toplevel.
4490 * The fasl file version number has changed (because of the new
4491 implementation of DEFMACRO).
4492 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4493 safe code, that any length requirement by their type-specifier
4494 argument is valid. The exceptions to this are described in bug
4496 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4497 functions now check the types of their inputs as required by ANSI.
4498 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4499 introduced symbol is DECLAREd to be SPECIAL.
4500 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4501 * fixed bug: :COUNT argument to sequence functions may be negative
4502 * fixed bug: body of DO-SYMBOLS may contain declarations
4503 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4504 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4505 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4506 symbol macro only once
4507 * fixed printing of call frame when argument list is unavailable
4508 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4509 * compiler no longer signals WARNING on unknown keyword
4512 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4513 * A beta-quality port to the mips architecture running Linux,
4514 based on the old CMUCL backend, has been made. It has been tested
4515 on a big-endian kernel, and works sufficiently well to be able to
4516 rebuild itself; it has not been tested in little-endian mode.
4517 * fixed an inconsistency between gencgc.c and purify.c which made
4518 dumping/loading .core files unreliable
4519 * fixed bug 120a: The compiler now deals correctly with IFs where
4520 the consequent is the same as the alternative, instead of
4521 misderiving the return type. (thanks to Alexey Dejneka)
4522 * fixed bug 113: Logical pathnames are now dumpable (the logical
4523 host is resolved at load-time, throwing an error if it is not
4525 * fixed bug 174: FORMAT's error message is slightly clearer when a
4526 non-printing character is used in a format directive.
4527 * fixed several bugs in compiler checking of type declarations, i.e.
4528 violations of the Python "declarations are assertions" principle
4529 (thanks to Alexey Dejneka)
4530 * fixed several bugs in PCL's error checking (thanks to Gerd
4532 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4534 * fixed bug in compilation of functions as first class values
4535 (thanks to Antonio Martinez-Shotton)
4536 * The compiler's handling TYPE-ERRORs which it can prove will
4537 inevitably happen at runtime has been cleaned up and corrected
4538 in several ways. (thanks to Alexey Dejneka)
4539 * improved argument type checking for various basic arithmetic
4540 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4541 lavished on them in the past that they can be compiled in many
4542 ways in different special cases
4543 * fixed bug 181: compiler checks validity of user supplied type
4545 * cleaned up code flushing in optimization: Function calls which
4546 should signal errors for safety purposes (e.g. which ANSI says
4547 should signal errors when their arguments are of incorrect type)
4548 are no longer optimized away.
4549 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4550 * incremented fasl file version number, because changes in the
4551 implementation of sequence functions like COERCE caused
4552 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4553 in old inline expansions) to become undefined. (Actually these
4554 changes were later undone, so we might very well be binary
4555 compatible with 0.7.7 after all, but leaving the version number
4556 incremented seemed like the simplest and most conservative
4559 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4560 * An alpha-quality port to the parisc architecture running Linux,
4561 based on the old CMUCL backend, has been made. This, even more so
4562 than the other backends, should be considered still a work in
4563 progress; known problems include that the Linux kernel in 64-bit
4564 mode does not propagate the correct sigcontext structure to
4565 userspace, and consequently SBCL on a parisc64 kernel will not
4567 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4568 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4569 suppressed.) Also now that the compiler is looking at declarations
4570 in the environment, it checks optimization declarations as well,
4571 and suppresses inlining when (> DEBUG SPEED).
4572 * More fixes have been made to treatment of floating point exception
4573 treatment and other Unix signals. In particular, floating point
4574 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4575 * The detection and handling of control stack exhaustion (infinite
4576 or very deeply nested recursion) has changed. Stack exhaustion
4577 detection is now done by write-protecting pages at the OS level
4578 and applies at all optimization settings; when found, a
4579 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4580 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4581 be caught using IGNORE-ERRORS.
4582 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4583 correctly when transforming recursive LABELS functions to LETs.
4584 (thanks to Alexey Dejneka)
4585 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4586 that are names of constants or global variables.
4587 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4588 alien routines with docstrings.
4589 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4590 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4592 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4593 (thanks to Eric Marsden)
4594 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4595 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4596 * Bug fix: The SPARC backend can now compile functions involving
4597 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4598 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4599 to a functions expecting a PATHNAME-DESIGNATOR.
4600 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4601 lambda lists. (thanks to Alexey Dejneka)
4602 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4603 functions so that EXPORTing the name of the class doesn't cause
4604 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4605 to Antonio Martinez for reporting this)
4606 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4607 constant-folded without failing an assertion. (thanks to Einar
4608 Floystad Dorum for reporting this)
4609 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4610 types are now dealt with more correctly by the compiler.
4611 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4612 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4613 behaviour analogous to RENAME-FILE. This puts its behaviour more
4614 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4616 * The fasl file version number has changed again. (because of the
4617 bug fix involving the names of PCL MAKE-INSTANCE functions)
4619 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4620 * bug fix: Floating point exceptions are treated much more
4621 consistently on the x86/Linux and PPC/Linux platforms.
4622 * Array initialization with :INITIAL-ELEMENT is now much faster for
4623 cases when the compiler cannot open code the array creation, but
4624 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4625 array accesses have also seen a speed increase.
4626 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4627 specified. (This was at the root of some bad interactions between
4628 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4630 * bug fix: Internal error arguments for undefined functions are now
4631 computed correctly on the PPC/Linux platform.
4632 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4633 Raymond Toy's patch for CMU CL)
4634 * Support for the Solaris 9 operating environment has been included
4635 (thanks to Daniel Merritt)
4636 * A very ugly but hopefully complete draft of the missing FFI chapter
4637 of the manual has been created by reformatting the corresponding
4638 CMU CL manual chapter into (currently very ugly and incoherent)
4639 DocBook and bringing it up to date for SBCL behavior. Thus, the
4640 manual is now essentially complete, at least by my extreme
4641 once-and-only-once standards, whereby it's acceptable to refer to
4642 the doc strings of SB-EXT functions as the primary documentation.
4643 * The fasl file version number has changed again, due to cleanup of
4644 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4645 is no longer a static symbol.)
4647 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4648 * SBCL now builds with OpenMCL (version 0.12) as the
4649 cross-compilation host; also, more progress has been made toward
4650 bootstrapping under CLISP.
4651 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4653 * bug 158 fixed: The compiler can now deal with integer loop
4654 increments different from 1; fixing this turned out also to fix
4656 * bug 169 fixed: no more bogus warnings about using lexical bindings
4657 despite the presence of perfectly good SPECIAL declarations (thanks
4658 to David Lichteblau)
4659 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4660 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4661 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4663 * bug 180 fixed: Method combination specifications no longer ignore
4664 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4665 * bug fix: Structure type predicate functions now check their argument
4666 count as they should.
4667 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4668 correctly. (thanks to Pierre Mai)
4669 * minor incompatible change: The --noprogrammer option is deprecated
4670 in favor of the new --disable-debugger option, which is very similar.
4671 (The major difference is that it takes effect at a slightly different
4672 time at startup, causing handling of errors in --sysinit and
4673 --userinit files will be affected differently.) The
4674 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4675 been added to allow this functionality to be controlled from ordinary
4676 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4677 maintainers, who might want to run non-interactive scripts to
4678 build SBCL cores which will later be used interactively.)
4679 * minor incompatible change: The LOAD function no longer, when given
4680 a wild pathname to load, loads all files matching that pathname.
4681 Instead, an error of type FILE-ERROR is signalled.
4683 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4684 * bug 147 fixed: The compiler preserves its block link/count
4685 invariants more correctly now so that it doesn't crash. (thanks
4687 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4689 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4690 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4691 no-value-for-this-character as NIL (as specified by ANSI).
4692 * HOST-NAMESTRING on physical pathnames now returns a string that is
4693 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4694 (thanks to Christophe Rhodes)
4695 * The Alpha port handles icache flushing more correctly. (thanks to
4697 * More progress has been made toward bootstrapping under CLISP. (thanks
4698 to Christophe Rhodes)
4699 * The fasl file format has changed again, because dynamic loading
4700 on OpenBSD (which has non-ELF object files) motivated some cleanups
4701 in the way that foreign symbols are transformed and passed around.
4702 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4703 is no longer treated as whitespace by the reader, but instead as
4704 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4705 |A
\7fB|, instead of A as it used to.
4707 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4708 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4709 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4710 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4711 this as of 0.7.1.45, but was left out of the previous news section
4712 (thanks to Dan Barlow)
4713 * SBCL now runs on the Solaris operating system on SPARC architectures
4714 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4715 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4716 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4717 * SPARC backend cleanups, allowing builds of cores optimized for V8
4718 and V9 SPARCS, and also emission of code targeted to a particular
4719 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4721 * SBCL is closer to bootstrapping under CLISP, thanks to various
4722 fixes by Christophe Rhodes.
4723 * The fasl file format has changed again, to allow the compiler's
4724 INFO database to support symbol macros.
4725 * The user manual (in doc/) is formatted into HTML more nicely.
4726 (thanks to coreythomas)
4727 * The system is smarter about SUBTYPEP relationships, especially
4728 those involving NOT types (including types such as ATOM which are
4729 represented internally using NOT types). Thus SUBTYPEP is less
4730 likely to return (VALUES NIL NIL) in general, and in particular
4731 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4733 * The fasl file format has changed again, because the internal
4734 representation of types now includes a new slot to support the new
4735 SUBTYPEP-of-NOT-types logic.
4736 * (not a change in the main branch of SBCL, but a related prototype
4737 which can hopefully be merged into the main branch of SBCL in the
4738 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4739 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4740 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4741 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4742 dispatch macro character combinations. (thanks to Alexey Dejneka)
4743 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4744 that superficially look like logical namestrings correctly.
4745 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4747 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4748 default supplied-p) for &optional and &key arguments. (thanks to
4751 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4752 * incompatible change: The compiler is now less aggressive about
4753 tail call optimization, doing it only when (> SPACE DEBUG) or
4754 (> SPEED DEBUG). (This is an incompatible change because there are
4755 programs which relied on the old CMU-CL-style behavior to optimize
4756 away their unbounded recursion which will now die of stack overflow.)
4757 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4758 for non-GENCGC systems has been increased to 20M (since that
4759 seems much closer to the likely performance optimum for modern
4760 systems than the old 4M value was)
4761 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4762 and *DEBUG-PRINT-LEVEL*
4763 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4764 of CMU CL's support for SPARC, and various endianness and other
4765 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4766 * new syntactic sugar for the Unix command line: --load foo.bar is now
4767 an alternate notation for --eval '(load "foo.bar")'.
4769 ** The system now detects stack overflow and handles it gracefully,
4770 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4771 optimization settings. (This is a good thing in general, and
4772 its introduction in this version should be particularly timely
4773 for anyone whose code fails because of suppression of tail
4775 ** The system now hunts for the C variable "environ" in a more
4776 devious way, to avoid segfaults when the C library version differs
4777 between compile time and run time. (thanks to Christophe Rhodes)
4778 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4779 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4780 ** The compiler no longer issues bogus style warnings for undefined
4781 classes in the same source file as the DEFCLASSes which defined
4782 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4784 ** fixes in CONDITION class precedence list for undefined function
4785 errors (thanks to Alexei Dejneka)
4786 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4787 correctly. (thanks to Dan Barlow)
4788 ** portability fixes aiming at bootstrapping under CLISP (thanks
4789 to Dave McDonald and Christophe Rhodes)
4790 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4791 ** fixes in type translation and and type inference (thanks to
4793 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4794 ** various fixes in the new ports (thanks to Dan Barlow)
4795 * several changes related to debugging:
4796 ** suppression of tail recursion, as noted above
4797 ** stack overflow detection, as noted above
4798 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4799 is now the default. (For some time encapsulation has been more
4800 reliable than the breakpoint-based :ENCAPSULATE NIL
4801 implementation, at least on X86 systems; and I just noticed that
4802 encapsulation also seems closer to the spirit of the ANSI
4805 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4807 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4808 up properly again. (There was a packaging bug in 0.7.0 which
4809 left their definitions in SB-SYS::LOAD-FOREIGN and
4810 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4811 vital for most things which interface to C-level interfaces,
4812 like extensions working with sockets or databases or
4813 Perl-compatible regexes or whatever, and the need to fix
4814 this bug is the main reason that 0.7.1 was released so
4816 ** DEFGENERIC is now choosier about the methods it redefines, so that
4817 reLOADing a previously-LOADed file containing DEFGENERICs does
4818 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4819 cycle now works as it should. (thanks to Alexey Dejneka)
4820 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4821 fixed by Christophe Rhodes. (He actually submitted this patch
4822 months ago, and I delayed until after 0.7.0.)
4823 ** Bug 111 (internal compiler confusion about runtime checks on
4824 FUNCTION types) was fixed by Alexey Dejneka.
4825 * Some internal cleanups (getting rid of variables which aren't
4826 needed now that the byte interpreter is gone) caused the fasl
4827 file format number to change again.
4829 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4830 * major incompatible change: The default fasl file extension, i.e. the
4831 default extension for files produced by COMPILE-FILE, has changed
4832 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4834 ** There are many changes in the implementation of the compiler.
4835 SBCL is now essentially a compiler-only implementation of ANSI
4836 Common Lisp. EVAL still "interprets" a few special cases, but
4837 almost all the interesting cases are handled by creating
4838 a LAMBDA expression, calling COMPILE on it, then calling
4839 FUNCALL on the result.
4840 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4841 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4842 Since the code is newer, there might still be some new bugs
4843 (though not as many as before Martin Atzmueller's fixes:-). But
4844 the new code is substantially simpler and clearer, and hopefully
4845 any remaining bugs will be simpler, less fundamental, and more
4846 fixable then the bugs in the old code.
4847 ** The revised compiler is still a little unsteady on its feet.
4849 *** The debugging information it produces (particularly the names
4850 of FUNCTION objects) is sometimes much less useful than what
4851 the old compiler produced.
4852 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4853 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4854 within a MACROLET) has been temporarily weakened.
4855 ** There are new compiler optimizations for various functions:
4856 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4857 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4858 *** the math functions TRUNCATE, FLOOR, and CEILING
4859 *** the function-of-all-trades COERCE
4860 Mostly these should be transparent, but there's one
4861 potentially-annoying problem (bug 117): when the compiler
4862 inline-expands a function and does type analysis on the result,
4863 it can create control paths which have type mismatches, and
4864 when it can't prove that those control paths aren't taken,
4865 it will issue WARNINGs about the type mismatches. This is
4866 a particular problem in practice for the new sequence functions.
4867 It's not clear how this should be fixed, and for now, a
4868 workaround is given in the entry for 117 in the BUGS file.
4869 ** (Because of the interaction between the two previous items --
4870 occasional inlining problems and new inline expansions -- some
4871 of the new sequence function optimizations won't really kick in
4872 completely until debugging information, and then inlining, are
4873 straightened out in some future version.)
4874 * minor incompatible changes:
4875 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4876 DIRECTORY no longer implicitly promotes NIL slots of its
4877 pathname argument to :WILD. In particular, when you ask for the
4878 contents of a directory (which you used to be able to do without
4879 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4880 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4881 ** changes in behavior that ANSI explicitly defines to be
4882 implementation dependent:
4883 *** The new compiler-only implementation still conforms with ANSI,
4884 but acts a little different than before. Besides the obvious
4885 changes in performance tradeoffs (that the cost per form passed
4886 to EVAL has gone up, and the cost per form executed by EVAL
4887 has gone down), the behavior of the system changes a little
4888 because there are no longer any interpreted function objects.
4889 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4890 e.g. doing COMPILE on the output of interactive DEFUN is
4892 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4894 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4895 has changed from (:CL) to NIL.
4896 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4897 e.g. #\Newline and #\Tab, don't have names specified in the
4898 ANSI Common Lisp standard, is now based on their ASCII symbolic
4899 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4900 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4901 are no longer used for output.
4902 ** changes in internal implementation constants:
4903 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4904 4 million. (If your application spends a lot of time GCing and
4905 you have a lot of RAM, you might want to experiment with
4906 increasing it even more.)
4907 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4908 However, almost all old code should still continue to work without
4909 immediate update, as SB-C-CALL is now a (deprecated) nickname
4911 ** Old operator names in the style DEF-FOO are now deprecated in
4912 favor of new corresponding names DEFINE-FOO, for consistency with
4913 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4914 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4915 internal symbols, but a few supported extensions like
4916 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4917 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4918 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4919 etc. as you get deeper into recursive calls to the debugger
4920 command loop, instead of the old "5]", "5]]", "5]]]"
4921 sequence. (I was motivated to do this when squabbles between
4922 ILISP and SBCL left me very deeply nested in the debugger. In the
4923 short term, this change will probably provoke more ILISP/SBCL
4924 squabbles, but hopefully it will be an improvement in the long run.)
4925 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4926 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4927 function, since declaiming return types involving aliens is
4928 (1) annoyingly messy to do by hand and (2) vital to efficient
4929 compilation of code which calls such functions.
4930 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4931 longer reexported by the SB-EXT package. They're solely useful
4932 for alien code, so it seems more logical that you should get
4933 them from the SB-ALIEN package, not in SB-EXT.
4934 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4935 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4936 features. Instead, the code that they used to control is always
4937 built into the system.
4938 * many other bug fixes
4939 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4940 advantage of the new EVAL-WHEN stuff and to clean them up in
4941 general, and they are now more ANSI-compliant in a number of
4942 ways. Martin Atzmueller is responsible for a lot of this.
4943 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4945 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4946 *** correct ERROR type for various file operations
4947 *** some fixes for Lisp streams
4948 *** DEFMETHOD syntax checking
4949 *** changing old weird representation of debug information as
4950 strings (which, among their other deficiencies, don't transform
4951 correctly when you rename packages, and don't change their
4952 print representation when you change things like *PACKAGE*
4953 and *PRINT-LENGTH*) to symbols and lists of symbols
4954 He also made several improvements and fixed several bugs in DESCRIBE.
4955 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4957 *** misbehavior of WRITE-STRING/WRITE-LINE
4958 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4959 and several other LOOP problems as well
4960 *** DIRECTORY when similar filenames are present
4961 *** DEFGENERIC with :METHOD options
4962 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4963 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4964 *** argument ordering in FIND with :TEST option
4965 *** mishandled package designator argument in APROPOS-LIST
4966 *** various problems in the backquote readmacro
4967 *** a bug in APROPOS
4968 *** probably some others that I'm not describing very well here,
4969 since the CVS log documents them by reference to sbcl-devel
4970 messages, and the SourceForge archives aren't working well.:-(
4971 ** Dan Barlow improved the Alpha port (and is making progress on the
4972 PPC port, for those of you who think different).
4973 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4974 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4975 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4976 continues to work on the SPARC port (for those of you in a position
4977 to look down upon our little PC-compatible boxes from a great height).
4978 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4979 and uses that copy, rather than the current dynamic value, when
4980 it's trying to decide whether to truncate output. Thus e.g.
4981 (let ((*print-lines* 50))
4982 (pprint-logical-block (stream nil)
4984 (let ((*print-lines* 8))
4985 (print (aref possiblybigthings i) stream)))))
4986 should now truncate the logical block only at 50 lines, instead of
4987 often truncating it at 8 lines, as it did before.
4988 * The doc/cmucl/ directory, containing old CMU CL documentation
4989 from the time of the fork, is no longer part of the base system.
4990 SourceForge has shut down its anonymous FTP service, and with it
4991 my original plan for distributing the old CMU CL documentation
4992 there. For now, if you need these files you can download an old
4993 SBCL source release and extract them from it.
4994 * The fasl file version number changed again, for dozens of reasons,
4995 some of which are apparent above.
4997 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4998 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4999 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5000 patch, so that DISASSEMBLE output is much nicer.
5001 * The code in the SB-PROFILE package now seems reasonably stable.
5002 I still haven't decided what the final interface should look like
5003 (I'd like PROFILE to interact cleanly with TRACE, since both
5004 facilities use function encapsulation) but if you have a need
5005 for profiling now, you can probably use it successfully with
5006 the current CMU-CL-style interface.
5007 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5008 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5009 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5010 link now returns the dangling link itself, and for similar
5011 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5012 link itself. (In these cases the old code signalled an error and
5013 looped endlessly, respectively.) Thus, DIRECTORY now works even
5014 in the presence of dangling and cyclic symbolic links.
5015 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5016 is now a supported extension again, since the consensus on
5017 sbcl-devel was that it can be useful for ordinary development
5018 work, not just for debugging SBCL itself.
5019 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5020 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5021 that currently-defined functions might be redefined later with
5022 different return types.
5023 * Hash tables can be printed readably, as inspired by CMU CL code
5024 of Eric Marsden and SBCL code of Martin Atzmueller.
5025 * better error handling in CLOS method combination, thanks to
5026 Martin Atzmueller porting Pierre Mai's CMU CL patches
5027 * more overflow fixes for >16Mbyte I/O buffers
5028 * A bug in READ has been fixed, so that now a single Ctrl-D
5029 character suffices to cause end-of-file on character streams.
5030 In particular, now you only need one Ctrl-D at the command
5031 line (not two) to exit SBCL.
5032 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5034 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5035 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5036 does the right thing.
5037 * The implementation of some type tests, especially for CONDITION
5038 types, is now tidier and maybe faster, due to CMU CL code
5039 originally by Douglas Crosher, ported by Martin Atzmueller.
5040 * Some math functions have been fixed, and there are new
5041 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5042 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5043 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5044 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5045 likely to be built into sbcl-0.7.0.)
5046 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5047 CL, ported to SBCL by Martin Atzmueller)
5048 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5049 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5050 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5051 * There's a new slam.sh hack to shorten the edit/compile/debug
5052 cycle for low-level changes to SBCL itself, and a new
5053 :SB-AFTER-XC-CORE target feature to control the generation of
5054 the after-xc.core file needed by slam.sh.
5055 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5056 COMPILE-FILE is no longer supported, so that now every function
5057 gets an entry point, so that block compilation looks a little
5058 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5059 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5060 returns the number of bytes consed since the system started,
5061 rather than the number consed since the first time the function
5062 was called. (The new definition parallels ANSI functions like
5063 CL:GET-INTERNAL-RUN-TIME.)
5064 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5065 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5066 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5067 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5068 * Fasl file version numbers are now independent of the target CPU,
5069 since historically most system changes which required version
5070 number changes have affected all CPUs equally. Similarly,
5071 the byte fasl file version is now equal to the ordinary
5074 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5075 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5076 is no longer recognized. I apologize for this, because it was
5077 listed in SB-EXT as a supported extension, but I found that
5078 its existing behavior was poorly specified, as well as incorrectly
5079 specified, and it looked like too much of a mess to straighten it
5080 out. I have enough on my hands trying to get ANSI stuff to work..
5081 * many patches ported from CMU CL by Martin Atzmueller, with
5082 half a dozen bug fixes in pretty-printing and the debugger, and
5083 half a dozen others elsewhere
5084 * fixed bug 13: Floating point infinities are now supported again.
5085 They might still be a little bit flaky, but thanks to bug reports
5086 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5087 as flaky as they were.
5088 * The --noprogrammer command line option is now supported. (Its
5089 behavior is slightly different in detail from what the old man
5090 page claimed it would do, but it's still appropriate under the
5091 same circumstances that the man page talks about.)
5092 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5093 are now supported, and enabled by default. Thus, the compiler can
5094 handle many floating point and complex operations much less
5095 inefficiently. (Thus e.g. you can implement a complex FFT
5097 * The compiler now detects type mismatches between DECLAIM FTYPE
5098 and DEFUN better, and implements CHECK-TYPE more correctly, and
5099 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5100 thanks to patches from Martin Atzmueller.
5101 * various fixes to make the cross-compiler more portable to
5102 ANSI-conforming-but-different cross-compilation hosts (notably
5103 Lispworks for Windows, following bug reports from Arthur Lemmens)
5104 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5105 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5106 fixed thanks to Pierre Mai's CMU CL patches.
5107 * fixes to keep the system from overflowing internal counters when
5108 it tries to use i/o buffers larger than 16M bytes
5109 * fixed bug 45a: Various internal functions required to support
5110 complex special functions have been merged from CMU CL sources.
5111 (When I was first setting up SBCL, I misunderstood a compile-time
5112 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5113 * improved support for type intersection and union, fixing bug 12
5114 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5115 more obscure bugs as well
5116 * some steps toward byte-compiling non-performance-critical
5117 parts of the system, courtesy of patches from Martin Atzmueller
5118 * Christophe Rhodes has made some debian packages of sbcl at
5119 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5120 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5121 stable, but are nonetheless usable. When he's ready, I'd be happy
5122 to add them to the SourceForge "File Releases" section. (And if
5123 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5124 * new fasl file format version number (because of changes in
5125 internal representation of (OR ..) types to accommodate the new
5126 support for (AND ..) types, among other things)
5128 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5129 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5131 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5133 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5134 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5135 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5136 * DESCRIBE now works on structure objects again.
5137 * Most function call argument type mismatches are now handled as
5138 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5139 know whether the function will be redefined before the call is
5140 executed. (The compiler could flag local calls with full WARNINGs,
5141 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5142 it doesn't keep track of enough information to know whether calls
5143 are local in this sense.)
5144 * Compiler output is now more verbose, with messages truncated
5145 later than before. (There should be some supported way for users
5146 to override the default verbosity, but I haven't decided how to
5147 provide it yet, so this behavior is still controlled by the internal
5148 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5149 src/compiler/ir1util.lisp.)
5150 * Fasl file format version numbers have increased again, because
5151 support for the Gray streams extension changes the layout of the
5152 system's STREAM objects.
5153 * The Gray subclassable streams extension now works, thanks to a
5154 patch from Martin Atzmueller.
5155 * The full LOAD-FOREIGN extension (not just the primitive
5156 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5157 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5158 but like most other programs, it defaults to copying the Unix
5159 environment from the original process instead of starting the
5160 new process in an empty environment.
5161 * Extensions which manipulate the Unix environment now support
5162 an :ENVIRONMENT keyword option which doesn't smash case or
5163 do other bad things. The CMU-CL-style :ENV option is retained
5164 for porting convenience.
5165 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5166 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5168 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5170 * A patch from Martin Atzmueller seems to have solved the SIGINT
5171 problem, and as far as we know, signal-handling now works cleanly.
5172 (If you find any new bugs, please report them!)
5173 * The system no longer defaults Lisp source file names to types
5174 ".l", ".cl", or ".lsp", but only to ".lisp".
5175 * The compiler no longer uses special default file extensions for
5176 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5177 seems to expect a single default extension for all compiled code,
5178 and there's no compelling reason to try to stretch the standard
5179 to allow two different extensions.) Instead, byte-compiled files
5180 default to the same extension as native-compiled files.
5181 * Fasl file format version numbers have increased again, because
5182 a rearrangement of internal implementation packages made some
5183 dumped symbols in old fasl files unreadable in new cores.
5184 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5185 many fewer weird special cases.
5186 * Bug #17 (differing COMPILE-FILE behavior between logical and
5187 physical pathnames) has been fixed, and some related misbehavior too,
5188 thanks to a patch from Martin Atzmueller.
5189 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5190 by Tim Moore, ported to SBCL by Martin Atzmueller.
5191 * Martin Atzmueller fixed several filesystem-related problems,
5192 including bug #36, in part by porting CMU CL patches, which were
5193 written in part by Paul Werkowski.
5194 * More compiler warnings in src/runtime/ are gone, thanks to
5195 more patches from Martin Atzmueller.
5196 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5199 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5201 * DESCRIBE now works on CONDITION objects.
5202 * The debugger now handles errors which arise when trying to print
5203 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5205 * The build system now uses an additional file, customize-target-features.lisp,
5206 to allow local modifications to the target *FEATURES* list. (The point of
5207 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5208 debugging features enabled, without having to worry about propagating it
5209 into everyone's system when I do a "cvs update".) When no
5210 customize-target-features.lisp file exists, the target *FEATURES* list
5211 should be constructed the same way as before.
5212 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5213 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5214 warn about behavior which is undefined under the ANSI spec. Note: This
5215 is specified by ANSI, but it's not very popular with programmers.
5216 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5217 macro in the SBCL sources for an example of a workaround which you
5218 might use to make portable ANSI-standard code which does what you want.
5219 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5220 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5221 when it's used as a non-toplevel form. (This is required in order
5222 to implement the DEFCONSTANT-EQX macro.)
5223 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5224 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5225 funny things, due to bugs in the implementation of EVAL-WHEN
5226 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5227 non-toplevel DEFCONSTANTs are uncommon.)
5228 * The core file version number and fasl file version number have been
5229 incremented, because the old noncompliant DEFCONSTANT behavior involved
5230 calling functions which no longer exist, and because I also took the
5231 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5232 * fixed bug 1 (error handling before read-eval-print loop starts), and
5233 redid debugger restarts and related debugger commands somewhat while
5235 ** The QUIT debugger command is gone, since it did something
5236 rather different than the SB-EXT:QUIT command, and since it never
5237 worked properly outside the main toplevel read/eval/print loop.
5238 Invoking the new TOPLEVEL restart provides the same functionality.
5239 ** The GO debugger command is also gone, since you can just invoke
5240 the CONTINUE restart directly instead.
5241 ** The TOP debugger command is also gone, since it's redundant with the
5242 FRAME 0 command, and since it interfered with abbreviations for the
5244 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5246 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5247 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5248 some porting work by Martin Atzmueller)
5249 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5250 with a boatload of patches which he ported to SBCL. Now that those
5252 ** The system tries to make sure that its low-priority messages
5253 are prefixed by semicolons, to help people who like to use
5254 syntax highlighting in their ILISP buffer. (This patch
5255 was originally due to Raymond Toy.)
5256 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5257 patches originally written by Raymond Toy.
5258 ** The compiler understands coercion between single-value and
5259 multiple-VALUES type expressions better, getting rid of some very
5260 weird behavior, thanks to patches originally by Robert MacLachlan
5261 and Douglas Crosher.
5262 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5263 lambda lists, thanks to a patch originally by Pierre Mai.
5264 ** The system no longer bogusly warns about "abbreviated type
5266 ** The compiler gets less confused by inlining and RETURN-FROM,
5267 thanks to some patches originally by Tim Moore.
5268 ** The system no longer hangs when dumping circular lists to fasl
5269 files, thanks to a patch originally from Douglas Crosher.
5270 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5271 undefined function error.
5272 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5273 in structure slot initforms) for now, documented workaround instead:-|
5274 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5275 * fixed bug 5: added stubs for various Gray stream functions called
5276 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5277 installed, at least appropriate type errors are generated
5278 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5279 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5280 consistently in DEFMETHOD forms.
5281 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5282 it doesn't seem to affect SBCL after all
5283 * The C runtime system now builds with better optimization and many
5284 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5286 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5288 * The system is now under CVS at SourceForge (instead of the
5289 CVS repository on my home machine).
5290 * The new signal handling code has been tweaked to treat register
5291 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5292 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5293 downstream, e.g. in debug-int.lisp, has implicit dependencies
5294 on the unsignedness of integer representation of machine words,
5295 and that caused the system to bomb out with infinite regress
5296 when trying to recover from type errors involving signed values,
5297 e.g. (BUTLAST '(1 2 3) -1).)
5298 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5299 (This was one of the bugs Peter Van Eynde reported back in July.)
5300 * The system now uses code inspired by Colin Walters' O(N)
5301 implementation of MAP (from the cmucl-imp@cons.org mailing
5302 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5303 inline the MAP operation, and there is more than one
5304 sequence argument to the MAP call (so that it can't just
5305 do ETYPECASE once and for all based on the type of the
5306 single sequence argument). (The old non-inline implementation
5307 of the general M-argument sequence-of-length-N case required
5308 O(M*N*N) time when any of the sequence arguments were LISTs.)
5309 * The QUIT :UNIX-CODE keyword argument has been renamed to
5310 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5311 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5313 * Raymond Wiker's patches to port dynamic loading from Linux to
5314 FreeBSD have been added.
5315 * The BUGS file is now more nearly up to date, thanks in large part
5316 to Martin Atzmueller's review of it.
5317 * The debugger now flushes standard output streams before it begins
5318 its output ("debugger invoked" and so forth).
5319 * The core version number and fasl file version number have both
5320 been incremented, because of incompatible changes in the layout
5322 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5323 used to not be called for a saved Lisp image.)
5324 * Martin Atzmueller's version of a patch to fix a compiler crash,
5325 as posted on sbcl-devel 13 September 2000, has been installed.
5326 * Instead of installing Martin Atzmueller's patch for the
5327 compiler transform for SUBSEQ, I deleted the compiler transform,
5328 and transforms for some similar consing operations.
5329 * A bug in signal handling which kept TRACE from working on OpenBSD
5331 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5332 away by constant folding
5333 * The system now defines its address space constants in one place
5334 (in the Lisp sources), and propagates them automatically elsewhere
5335 (through GENESIS and the sbcl.h file). Therefore, patching the
5336 address map is less unnecessarily tedious and error-prone. The
5337 Lisp names of address space constants have also been systematized.
5338 * CVS tags like dollar-Header-dollar have been removed from
5339 the sources, because they have never saved me trouble and
5340 they've been source of trouble working with patches and other
5341 diff-related operations.
5342 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5343 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5345 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5347 * The system has been ported to OpenBSD.
5348 * The system now compiles with a simple "sh make.sh" on the systems
5349 that it's supported on. I.e., now you no longer need to tweak
5350 text in the target-features.lisp-expr and symlinks in src/runtime/
5351 by hand, the make.sh takes care of it for you.
5352 * The system is no longer so grossly inefficient when compiling code
5353 involving vectors implemented as general (not simple) vectors (VECTOR T),
5354 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5355 which dares to use the various sequence functions on non-simple
5356 vectors, takes less of a performance hit.
5357 * There is now a primitive type predicate VECTOR-T-P
5358 to test for the (VECTOR T) type, so that e.g.
5359 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5360 can now be compiled with some semblance of efficiency. (The old code
5361 turned the type declaration into a full call to %TYPEP at runtime!)
5362 * AREF on (VECTOR T) is still not fast, since it's still compiled
5363 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5364 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5365 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5366 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5367 without making full calls to SUBTYPEP at runtime.
5368 (Some analogous efficiency issues for non-simple vectors specialized to
5369 element types other than T, or for non-simple multidimensional arrays,
5370 have not been addressed. They could almost certainly be handled the
5371 same way if anyone is motivated to do so.)
5372 * The changes in array handling break binary compatibility, so
5373 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5374 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5375 instead of (VALUES T T).
5376 * By following the instructions that Dan Barlow posted to sbcl-devel
5377 on 2 July 2000, I was able to enable primitive dynamic object
5378 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5379 functionality is not implemented (since it calls ld to resolve
5380 library references automatically, requiring RUN-PROGRAM for its
5381 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5382 try to resolve library references) is now supported.
5383 * The system now flushes the standard output streams when it terminates,
5384 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5385 them at several other probably-convenient times, e.g. in each pass of
5386 the toplevel read-eval-print loop, and after evaluating a form given
5387 as an "--eval" command-line option. (These changes were motivated by a
5388 discussion of stream flushing issues on cmucl-imp in August 2000.)
5389 * The source transform for TYPEP of array types no longer assumes
5390 that an array whose element type is a not-yet-defined type
5391 is implemented as an array of T, but instead punts, so that the
5392 type will be interpreted at runtime.
5393 * There is now some support for cross-compiling in make.sh: each of
5394 the phases of make.sh has its own script. (This should be transparent
5395 to people doing ordinary, non-cross-compile builds.)
5396 * Since my laptop doesn't have hundreds of megabytes of memory like
5397 my desktop machine, I became more motivated to do some items on
5398 my to-do list in order to reduce the size of the system a little:
5399 ** Arrange for various needed-only-at-cold-init things to be
5400 uninterned after cold init. To support this, those things have
5401 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5402 symbols with such names are now uninterned after cold init).
5403 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5404 fasl files for cold load.
5405 ** Remove the old compiler structure pooling code (which used to
5406 be conditional on the target feature :SB-ALLOC) completely.
5407 ** Redo the representation of some data in cold init to be more compact.
5408 (I also looked into supporting byte compiled code at bootstrap time,
5409 which would probably reduce the size of the system a lot, but that
5410 looked too complicated, so I punted for now.)
5411 * The maximum signal nesting depth in the src/runtime/ support code has
5412 been reduced from 4096 to 256. (I don't know any reason for the very
5413 large old value. If the new smaller value turns out to break something,
5414 I'll probably just bump it back up.)
5415 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5417 * Many, many bugs reported by Peter Van Eynde have been added to
5418 the BUGS list; some have even been fixed.
5419 * While enabling dynamic object file loading, I tried to make the
5420 code easier to understand, renaming various functions and variables
5421 with less ambiguous names, and changing some function calling
5422 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5423 * While trying to figure out how to do the OpenBSD port, I tried to
5424 clean up some of the code in src/runtime/. In particular, I dropped
5425 support for non-POSIX signal handling, added various comments,
5426 tweaked the code to reduce the number of compilation warnings, and
5427 renamed some files to increase consistency.
5428 * To support the new automatic configuration functionality in make.sh,
5429 the source file target-features.lisp-expr has been replaced with the
5430 source file base-target-features.lisp-expr and the machine-generated
5431 file local-target-features.lisp-expr.
5432 * fixed a stupid quoting error in make.sh so that using CMU CL
5433 "lisp -batch" as cross-compilation host works again
5435 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5437 * DESCRIBE no longer tries to call itself recursively to describe
5438 bound/fbound values, so that it no longer fails on symbols which are
5439 bound to themselves (like keywords, T, and NIL).
5440 * DESCRIBE now works on generic functions.
5441 * The printer now prints less-screwed-up representations of closures
5442 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5443 * A private symbol is used instead of the :EMPTY keyword previously
5444 used to mark empty slots in hash tables. Thus
5445 (DEFVAR *HT* (MAKE-HASH-TABLE))
5446 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5447 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5448 now does what ANSI says that it should. (You can still get
5449 similar noncompliant behavior if bang on the hash table
5450 implementation with all the symbols you get back from
5451 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5452 This breaks binary compatibility, since tests for equality to
5453 :EMPTY are wired into things like the macroexpansion of
5454 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5456 * There's now a minimal placeholder implementation for CL:STEP,
5457 as required by ANSI.
5458 * An obscure bug in the interaction of the normal compiler, the byte
5459 compiler, inlining, and structure predicates has been patched
5460 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5461 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5463 * Missing ordinary arguments in a macro call are now detected even
5464 when the macro lambda list contains &KEY or &REST.
5465 * The debugger no longer complains about encountering the top of the
5466 stack when you type "FRAME 0" to explicitly instruct it to go to
5467 the top of the stack. And it now prints the frame you request even
5468 if it's the current frame (instead of saying "You are here.").
5469 * As specified by ANSI, the system now always prints keywords
5470 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5472 * The default initial SIZE of HASH-TABLEs is now smaller.
5473 * Type information from CLOS class dispatch is now propagated
5474 into DEFMETHOD bodies, so that e.g.
5475 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5477 is now basically equivalent to
5478 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5479 (DECLARE (TYPE SINGLE-FLOAT X))
5481 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5482 operation, without having to do run-time type dispatch.
5483 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5484 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5485 * Since I don't seem to be making big file reorganizations very often
5486 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5487 is overflowing my ability to conveniently back them up), I've finally
5488 checked the system into CVS. (The CVS repository is on my home system,
5489 not at SourceForge -- putting it on SourceForge might come later.)
5490 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5491 high-level GC-NOTIFY-FOO functions send their output. (There's
5492 still very little control of where low-level verbose GC functions
5493 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5494 less than it used to -- the GC-NOTIFY-FOO functions are now under
5495 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5496 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5497 in only one place in the source code, and propagates it automatically
5498 everywhere that it's needed. Thus e.g. when I bump the version from
5499 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5500 * The C source files now include boilerplate legalese and documentation
5501 at the head of each file (just as the Lisp source files already did).
5502 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5503 to his page will be replaced with a link to his new CLiki service.
5505 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5507 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5508 * The build process now looks for GNU make under the default name "gmake",
5509 instead of "make" as it used to. If GNU make is not available as "gmake"
5510 on your system, you can change this default behavior by setting the
5511 GNUMAKE environment variable.
5512 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5513 can build without error under CMU CL.
5515 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5517 * There is now a partial SBCL user manual (with some new text and some
5518 text cribbed from the CMU CL manual).
5519 * The beginnings of a profiler have been added (starting with the
5520 CMU CL profiler and simplifying and cleaning up). Eventually the
5521 main interface should be through the TRACE macro, but for now,
5522 it's still accessed through vaguely CMU-CL-style functions and macros
5523 exported from the package SB-PROFILE.
5524 * Some problems left over from porting CMU CL to the new
5525 cross-compilation bootstrap process have been cleaned up:
5526 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5527 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5528 part when getting rid of the compiler *BACKEND* stuff.)
5529 ** The value of *NULL-TYPE* was screwed up, because it was
5530 being initialized before the type system knew the final
5531 definition of the 'NULL type. This screwed up several key
5532 optimizations in the compiler, causing inefficiency in all sorts
5533 of places. (I found it because I wanted to understand why
5534 GET-INTERNAL-RUN-TIME was consing.)
5535 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5536 PROCLAIM FTYPE information. Unfortunately this broke binary
5537 compatibility again, since now the forms output by DEFGENERIC
5538 to refer to functions which didn't exist in 0.6.3.
5539 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5540 can use the new (as of 0.6.3) transform for SOME into MAP into
5542 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5543 values to (INTEGER 0 1000000), so that the time code will no longer
5544 occasionally get blown up by Linux returning 1000000 microseconds
5545 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5546 its output conform to the ANSI spec. (Alas, this makes its output
5547 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5548 * A full call to MAP NIL with a single sequence argument no longer conses.
5549 * fixes to problems pointed out by Martin Atzmueller:
5550 * The manual page no longer talks about multiprocessing as though
5551 it were currently supported.
5552 * The ILISP support patches have been removed from the distribution,
5553 because as of version 5.10.1, ILISP now supports SBCL without us
5554 having to maintain patches.
5555 * added a modified version of Raymond Toy's recent CMU CL patch for
5556 EQUALP comparison of HASH-TABLE
5558 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5560 * The system still can't cross-compile itself with
5561 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5562 entails), but at least it can compile more of itself that way
5563 than it used to be able to, and various buglets which were uncovered
5564 by trying to cross-compile itself that way have now been fixed.
5565 * This release breaks binary compatibility again. This time
5566 at least I've incremented the FASL file format version to 2, so that the
5567 problem can be detected reliably instead of just causing weird errors.
5568 * various new style warnings:
5569 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5570 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5571 ** using the lexical binding of a variable named in the *FOO* style
5572 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5573 as specified by ANSI.
5574 * *RANDOM-STATE* is no longer automatically initialized from
5575 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5576 default behavior of the system is to repeat its behavior every time
5577 it's run. If you'd like to change this behavior, you can always
5578 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5579 old convention there was no comparably easy way to get the system to
5580 repeat its behavior every time it was run.
5581 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5582 FTYPE declarations has been removed, in favor of their ANSI
5583 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5584 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5585 the types of their sequence arguments can be determined at compile time.
5586 This is done through a new open code expansion for MAP which eliminates
5587 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5588 argument types can be determined at compile time.
5589 * The optimizer now transforms COERCE into an identity operation when it
5590 can prove that the coerced object is already of the correct type. (This
5591 can be a win for machine generated code, including the output of other
5592 optimization transforms, such as the MAP transform above.)
5593 * Credit information has been moved from source file headers into CREDITS.
5594 * Source file headers have been made more standard.
5595 * The CASE macro now compiles without complaining even when it has
5598 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5600 * (Note that the way that the PCL macroexpansions were rewritten
5601 to accommodate the change in DEFGENERIC below breaks binary
5602 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5603 not run under sbcl-0.6.2. Once we get out of alpha releases,
5604 i.e. hit release 1.0.0, we'll probably try to maintain binary
5605 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5606 and sbcl-1.4.4. Until then, however, it might be fairly common
5607 for maintenance releases to break binary compatibility.)
5608 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5610 * The reporting of unhandled signals has been changed to print some
5611 explanatory text as well as the report form. (Previously only
5612 the report form was printed.)
5613 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5614 it defines, so that the compiler no longer issues undefined function
5615 warnings for compiled-but-not-yet-loaded generic functions.
5616 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5617 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5618 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5619 section of the ANSI spec are supported.
5620 * The "" nickname for the "KEYWORD" package has been removed.
5621 The reader still handles symbol tokens which begin with a package marker
5622 as keywords, but it doesn't expose its mechanism for doing so in the
5623 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5624 * The system now issues STYLE-WARNINGs for contradictory TYPE
5625 proclamations. (Warnings for contradictory FTYPE proclamations would
5626 be nice too, but those can't be done usefully unless the type system
5627 is made smarter about FUNCTION types.)
5628 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5629 systematized, so that "*target-*.lisp is supposed to exist only on the
5630 target and imply that there's a related file which exists on the
5631 host, and *host-*.lisp is supposed to exist only on the host and imply
5632 that there's a related file which exists on the target. This involves a
5633 lot of renaming. Hopefully the acute confusion caused by the renaming
5634 will be justified by the reduction in chronic confusion..
5635 ** runtime-type.lisp -> early-target-type.lisp
5636 ** target-type.lisp -> late-target-type.lisp
5637 ** early-host-format.lisp -> early-format.lisp
5638 ** late-host-format.lisp -> late-format.lisp
5639 ** host-error.lisp -> misc-error.lisp
5640 ** early-error.lisp -> early-target-error.lisp
5641 ** late-error.lisp -> late-target-error.lisp
5642 ** host-defboot.lisp -> early-defboot.lisp
5643 ** code/misc.lisp -> code/target-misc.lisp
5644 ** code/host-misc.lisp -> code/misc.lisp
5645 ** code/numbers.lisp -> code/target-numbers.lisp
5646 ** code/early-numbers.lisp -> numbers.lisp
5647 ** early-host-type.lisp -> early-type.lisp
5648 ** late-host-type.lisp -> late-type.lisp
5649 ** host-typep.lisp -> typep.lisp
5650 ** load.lisp -> target-load.lisp
5651 ** host-load.lisp -> load.lisp
5652 ** host-disassem.lisp -> disassem.lisp
5653 ** host-insts.lisp -> insts.lisp
5654 ** byte-comp.lisp -> target-byte-comp.lisp
5655 ** host-byte-comp.lisp -> byte-comp.lisp
5656 ** host-signal.lisp -> signal.lisp
5657 ** host-defstruct.lisp -> defstruct.lisp
5658 ** late-target-type.lisp -> deftypes-for-target.lisp
5659 Furthermore, several other previously target-only files foo.lisp (e.g.
5660 hash-table.lisp and random.lisp) have been split into a target-and-host
5661 foo.lisp file and a target-only target-foo.lisp file, with their key type
5662 definitions in the target-and-host part, so that the cross-compiler will
5663 know more about target types.
5664 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5665 gone away. In their place are various *BACKEND-FOO* variables
5666 corresponding to the slots of the old structure.
5667 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5668 into the target SBCL has been fixed.
5669 * The chill.lisp system for loading cold code into a running SBCL
5671 * Support for the CMU CL "scavenger hook" extension has been removed.
5672 (It was undocumented and unused in the CMU CL sources that SBCL was
5673 derived from, and stale in sbcl-0.6.1.)
5674 * Various errors in the cross-compiler type system were detected
5675 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5676 (enabling various consistency checks). Many of them were fixed,
5677 but some hard problems remain, so the compiler is back to
5678 running without *TYPE-SYSTEM-INITIALIZED* for now.
5679 * As part of the cross-compiler type system cleanup, I implemented
5680 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5681 * I have started adding UNCROSS calls throughout the type system
5682 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5683 on cross-compiler input files will be able to go away, and various
5685 * CONSTANTP now returns true for quoted forms (as explicitly required
5688 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5690 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5691 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5692 (MAKE-LIST -1). In the longer term, it ought to become true
5693 that declarations are assertions even at SAFETY 1. For now, it's not
5694 quite true even at SAFETY 3, but it's at least more nearly true..
5695 (Note that this change seems to increases the size of the system by
5696 O(5%) and to decrease the speed of the compiler by 20% or more.)
5697 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5698 for the problem of printing dozens of lines of distracting information
5699 about low-level system machinery as part of the top stack frame
5700 on entry to the debugger when an undefined function was called.
5701 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5702 is not reset to COMMON-LISP-USER.
5703 * Compilation of stuff related to dyncount.lisp has been made conditional
5704 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5705 smaller. The various dyncount-related symbols have been moved into
5706 a new "SB-DYNCOUNT" package.
5707 * tty-inspect.lisp has been renamed to inspect.lisp.
5708 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5709 feature has gone away. (When we eventually port to other flavors of
5710 libc and/or Unix, we'll try to make the differences between flavors
5711 invisible at the user level.)
5712 * Various other *FEATURES* tags, and/or their associated conditionals,
5713 have been removed if obsolescent, or given better documentation, or
5714 sometimes given more-mnemonic names.
5716 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5718 * tidied up "make.sh" script
5719 * tidied up system directory structure
5720 * better "clean.sh" behavior
5721 * added doc/FOR-CMUCL-DEVELOPERS
5722 * many many small tweaks to output format, e.g. removing possibly-confusing
5723 trailing #\. character in DESCRIBE-INSTANCE
5724 * (EQUALP #\A 'A) no longer signals an error.
5725 * new hashing code, including EQUALP hashing
5726 * tidied up Lisp initialization and toplevel
5727 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5728 * command line argument processing
5729 * added POSIX-GETENV function to deal with Unix-ish environment variables
5730 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5731 terminating SBCL on EOF
5732 * non-verbose GC by default
5733 * There is no more "sbcl" shell script; the sbcl file is now the C
5734 runtime executable (just like CMU CL).
5735 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5737 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5738 symbol and package information as Lisp native symbol and package objects
5739 instead of strings naming symbols and strings naming packages. This way,
5740 whenever packages are renamed (as in warm init), debug information is
5741 transformed along with everything else.
5742 * tweaked the optimization policy declarations which control the building
5743 of SBCL itself. Now, among other things, the system no longer saves
5744 source location debugging information. (This helps two problems at once
5745 by reducing SBCL size and by keeping SBCL from trying to look for its
5746 sources -- which may not exist -- when reporting errors.)
5747 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5748 debugging and testing purposes
5749 * cleaned up printing, making the printer call PRINT-OBJECT for
5750 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5751 methods, giving nearly-ANSI behavior
5752 * converted almost all special variables to use *FOO* naming convention
5753 * deleted PARSE-TIME functionality, since it can be done portably
5754 * moved some files out of cold init into warm init
5755 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5757 * regularized formatting of source files
5758 * added an install.sh script
5759 * fixed ridiculous memory usage of cross-compiler by making
5760 compiler/alloc.lisp not try to do pooling unless it can hook
5761 itself into the GC of the cross-compilation host. Now the system
5762 builds nicely on my old laptop.
5763 * added :SB-ALLOC in target-features.lisp-expr
5764 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5765 was not implemented)
5766 * re-did condition handling and note reporting in the compiler. Notes
5767 are no longer handled by signalling conditions. Style warnings
5768 and warnings are handled more correctly and reported in such a way
5769 that it's easy to find one or the other in your output (so that you
5770 can e.g. figure out which of many problems caused COMPILE-FILE to
5772 * changed the severity of several compiler warnings from full WARNING
5773 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5774 compiler note reporting so that it doesn't use the condition system
5775 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5776 COMPILE-FILE command)
5777 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5778 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5779 no longer supported, since their implementation was deeply intertwingled
5780 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5781 * removed bogus "support" for compiler macros named (SETF FOO), and
5782 removed the compiler macro for SETF INFO (but only after making a fool
5783 of myself on the cmucl-imp mailing list by posting a bogus patch for
5784 DEFINE-COMPILER-MACRO..)
5785 * Compiled files containing forms which have side effects on the Lisp
5786 reader (such as DEFPACKAGE forms) are now handled more correctly.
5787 (Compiler queuing of top level lambdas has been suppressed by setting
5788 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5789 * deleted various currently-unused source files, e.g. gengc.lisp. They
5790 may be added back at some point e.g. when porting to other architectures,
5791 but until they are it's distracting to distribute them and to try to
5793 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5794 there were so many of them they're just distractions, and UNCROSS is
5795 known to be able to handle the current sources
5796 * moved PROFILE functionality into TRACE, so that it will be clear
5797 how the wrapping and unwrapping of functions when you profile them
5798 interacts with the wrapping and unwrapping of functions when you
5799 trace them. (Actually, the functionality isn't there yet, but at least
5800 the interface specification is there. Hopefully, the functionality will
5801 arrive with some future maintenance release.)
5802 * removed host-oops.lisp
5803 * changed signature of QUIT function to allow UNIX-CODE argument
5804 * fixed READ-SEQUENCE bug
5805 * tweaked verbose GC output so that it looks more like the progress
5806 output that ANSI specifies for functions like LOAD
5807 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5808 * added <http://sbcl.sourceforge.com> to the banner information printed by