1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.43:
3 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
4 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
5 * enhancement: ALLOCATION-INFORMATION also provides the page the object
7 * enhancement: default dynamic-space size can be configured at build-time
8 without touching source, using the --dynamic-space-size argument to make.sh.
9 * enhancement: DESCRIBE recognizes symbols naming optimization policy
10 qualities, and mentions ALWAYS-BOUND declarations.
11 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
13 * enhancement: ASDF has been updated to 2.009.
14 * enhancement: the system detects known type-erros in calls better,
15 signalling a full warning about violated proclaimed FTYPEs and violations
16 of derived FTYPEs within the same file, including self-calls.
17 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
18 * optimization: constant-folding exploits numeric and character types, in
19 addition member types.
20 * optimization: numeric, character and member types that are inhabited by
21 exactly one value are tested with EQL.
22 * optimization: more conditional branches are eliminated during IR1.
23 Branches are simplified before performing if/if-conversion, and simple
24 equivalent branches (that only read the same constant or variable) are
26 * improvements to the Windows port:
27 ** change: canonical unparsing form for pathname namestrings now uses / as
28 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
29 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
30 on Windows. (thanks to Kalyanov Dmitry)
31 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
33 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
34 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
35 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
36 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
38 * bug fix: interrupts arriving during CL:OPEN caused an error.
39 * bug fix: overeager character buffering could cause input to block
40 spuriously when reading from a pipe (lp#643686)
41 * bug fix: more efficient timer expiry should avoid starvation on systems
42 where number of SIGALRMs per second is restricted. (lp#375515)
43 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
44 * bug fix: compile-times no longer scale linearly with the size of
45 quoted lists in source-code. (lp#654289)
46 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
47 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
49 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
50 an error for eg. STRUCTURE. (lp#458015)
51 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
52 (lp#613871, thanks to Roman Marynchak)
53 * bug fix: more reliable &REST list type derivation. (lp#655203)
54 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
55 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
56 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
57 also declared NOTINLINE. (lp#655581)
58 * bug fix: the compiler could attempt to emit constant left shifts of
59 greater value than n-word-bits. (lp#309063)
60 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
61 type information for the function being set. (lp#659220)
62 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
63 containing self-calls were recompiled with a new signature, and failed
64 to warn when a self-call using the old signature was left in. (lp#655126)
65 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
66 :DEFAULT when the default external had character size other than 8 bits.
68 * bug fix: derived types of functions in the same file were implicitly
69 trusted, leading to potential heap corruption when those function were
70 defined incompatibly. (lp#657499)
71 * bug fix: existing ASDF source registries are ignored when building
73 * bug fix: short-form DEFSETF checks that the second argument is a symbol
74 (lp#655824, thanks to Roman Marynchak)
75 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
76 package-lock violation was detected. (lp#660752)
77 * bug fix: the system can store different docstrings for a single function
78 under different names. (lp#661631, regression from 1.0.29.24)
79 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
81 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
82 of specified length could confuse the type derivation in unsafe code.
84 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
85 fork with multiple Lisp threads running is made on every platform,
86 not just Darwin. (lp#451111)
87 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
88 around when core was saved, which could cause undefined behaviour when the
91 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
92 * incompatible change: FD-STREAMS no longer participate in the serve-event
93 event-loop by default. (lp#316072)
94 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
95 affects streams from CL:OPEN.
96 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
97 default, but this is liable to change: applications needing serve-event
98 for socket streams should explicitly request it using :SERVE-EVENTS T
100 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
102 * enhancement: CLOS effective method functions and defclass slot typechecking
103 function now have debug names for use in backtraces and profiles.
104 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
106 * enhancement: symbols are printed using fully qualified names in several
107 error and warning messages which are often associated with package
108 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
109 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
110 thanks to Andrew Golding)
111 * bug fix: reading /proc files on Linux works. (lp#425199)
112 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
114 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
115 breaking code that tried to write the value of a printer control variable.
116 (lp#581564, thanks to Stas Boukarev)
117 * bug fix: WRITE compiler macro did not handle output stream designators
118 correctly. (lp#598374, thanks to Stas Boukarev)
119 * bug fix: better availability of names of foreign functions in backtraces
120 on Linux. (lp#626962, thanks to Stas Boukarev)
121 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
122 lp#627581, thanks to Josh Elsasser and Jim Wise)
123 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
124 thanks to Josh Elsasser)
125 * bug fix: using aliases for builtin classes as defmethod specializers
126 without adding DEFTYPEs for them works. (lp#618387)
127 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
129 * bug fix: legally dynamic-extent lists and vectors used as
130 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
131 * bug fix: inline-expansion creating references to dead lambda-variables
132 (lp#454681, thanks to Alexey Dejneka)
133 * bug fix: better error message for bogus numerical arguments to RANDOM.
134 (lp#598986, thanks to Stas Boukarev)
135 * bug fix: the compiler occasionally inlined references from incompatible
136 environments occurs. (lp#308951)
137 * bug fix: the compiler threw an error when trying to compile a local
138 function (labels or flet) known to take a specialized complex argument.
139 (not in launchpad, reported by sykopomp in #lispgames)
140 * bug fix: package-locks failed to protect against compile-time effects of
141 DEFUN when the symbol previously had a macro definition. (lp#576637)
142 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
143 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
144 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
145 * bug fix: evaluation in debugger REPL works using the global context when
146 in frames that do not have sufficient debug information.
147 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
149 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
151 * bug fix: interrupt taking longer than the requested period caused SLEEP
152 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
154 changes in sbcl-1.0.42 relative to sbcl-1.0.41
156 ** Cross-compilation host is now specified to make.sh using
157 command-line argument --xc-host=<command> instead of a positional
158 argument. (thanks to Daniel Herring)
159 ** Install location can be specified to make.sh using command-line
160 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
161 * optimization: The default implementation of
162 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
163 * enhancement: Explicit memory barrier operations are now available for use
164 by multithreaded code. See documentation for details.
165 * enhancement: Experimental support for threading on Linux/PPC.
166 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
167 * bug fix: EXPT signals an error if first argument is a zero and second
168 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
169 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
170 (lp#576594, thanks to Roman Marynchak)
171 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
172 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
174 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
175 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
176 cached, leading to many fewer expensive calls to
177 COMPUTE-APPLICABLE-METHODS.
178 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
179 CLASS argument, search for and call an appropriate optimized ctor function
181 * bug fix: WRITE always returns the correct value.
183 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
184 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
185 * bug fix: Name conflicts between symbols passed as arguments to a single
186 call to IMPORT no longer add multiple symbols with the same name to the
187 package (detectable via DO-SYMBOLS).
188 * bug fix: support building without the dlshim on darwin x86 and x86-64
190 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
192 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
193 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
195 * bug fix: linkage-table entries on PPC now no longer overflow their
196 space allocation (potentially causing crashes if they are written out
198 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
199 platforms, preventing the GC from seeing stale pointers on the control
200 stack in subsequent GCs (which would, and does, break invariants).
201 * bug fix: 32-bit unicode external formats now work on big-endian systems.
202 * bug fix: Literal characters with code points greater than about 32767
203 now work on PPC UNICODE builds.
204 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
205 high order bits are explicitly cleared out. In some contrived situations,
206 this could lead to wrong results in mixed real/complex float arithmetic.
207 * bug fix: Fix function/macro redefinition warnings when building with
208 clisp. (lp#576787, thanks to Josh Elsasser)
209 * new platform: experimental support for ppc/openbsd (thanks to Josh
211 * bug fix: Floating-point traps now work on ppc/linux.
213 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
214 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
215 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
216 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
217 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
218 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
219 SB-THREAD:GRAB-MUTEX.
220 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
221 contain additional data structures and tools for concurrent programming;
222 at the moment it contains a lock-free queue, and a lock-free mailbox
224 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
225 GET-MUTEX but takes &key rather than &optional parameters. Also added
226 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
228 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
229 SB-THREAD:WAIT-ON-SEMAPHORE.
230 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
232 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
233 conditions to defer the deadline for forever.
234 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
236 * enhancement: errors from NO-APPLICABLE-METHOD and
237 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
238 generic function call.
239 * enhancement: SB-BSD-SOCKET improvements
240 ** sockets and socket streams now have a more informative printed
241 representation based on the corresponding SOCKET-NAME and
243 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
245 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
246 CL:CLOSE when appropriate, and no longer disassociates the stream
247 from the socket if close failed. (lp#543951)
248 * improvements to the instrumenting profiler
249 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
250 ** optimization: counters no longer use locks for the overflow mode.
251 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
252 incurred an off-by-one miscount.
253 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
254 * enhancement: improved DEFMETHOD pretty-printing.
255 * enhancement: perform range reduction when arguments are too large for
256 x87's transcendentals (instead of returning 0). (lp#327192)
257 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
258 some of CL-PPCRE's macros. (lp#570079)
259 * enhancement: our machine code is slightly less hostile to valgrind on
261 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
262 to Robert Swindells and Aleksej Saushev)
263 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
264 * bug fix: a rare case of startup-time page table corruption.
265 * bug fix: a semaphore with multiple waiters and some of them unwinding due
266 to timeouts could be left in an inconsistent state.
267 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
268 * bug fix: misoptimization of multiplication by one in
269 (SB-C::FLOAT-ACCURACY 0) policies.
270 * bug fix: miscounts in SB-PROFILE.
271 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
272 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
273 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
274 up itself" (March 2010) for further details.
275 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
276 against length of the list if the element is found before the specified
277 END is reached. (thanks to Alec Berryman, lp#554385)
278 * bug fix: errors signalled during package graph modification no longer
279 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
280 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
281 :SB-DOC feature. (lp#552564)
282 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
283 * bug fix: more robust runtime executable path detection. (lp#375549)
284 * bug fix: GCD always returns positive values. (lp#413680)
285 * bug fix: Converting division to multiplication by reciprocal handles
287 * bug fix: We were too eager in eliding range reduction tests on x87.
288 The maximal magnitude is 2^63, not 2^64.
289 * bug fix: Transforms for TRUNCATE don't die when the result is completely
291 * bug fix: Maybe restore buildability on Alpha.
292 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
294 * bug fix: RANDOM-STATE can be printed readably again.
295 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
296 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
297 types) could result in type mismatches during compilation.
299 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
300 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
301 stack frame thrown from.
302 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
303 compiler optimization qualities inside dynamic extent of its body.
304 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
305 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
307 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
308 constraint propgation, allowing better compilation eg. when used to
309 access structures with WITH-SLOTS. (lp#520366)
310 * optimization: the compiler is now more aware of the type of the underlying
311 storage vector for multidimensional simple arrays resulting in better code
312 for accessing such arrays.
313 * optimization: passing NIL as the environment argument to TYPEP no longer
314 inhibits optimizing it. (lp#309788)
315 * optimization: more efficient register usage when handling single-float
316 arguments on x86-64. (thanks to Lutz Euler)
317 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
318 pre-allocated temporary vectors. (lp#496249)
319 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
320 in :INITIAL-CONTENTS. (lp#523612)
321 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
322 functions. (lp#524707)
323 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
324 WITH-SLOTS usages during compilation.
325 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
326 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
327 all x86oid platforms with :UD2-BREAKPOINTS target feature.
328 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
329 instruction (tested on x86oid linux with ud2-breakpoints).
330 * bug fix: slam.sh now works on win32.
331 * bug fix: better differences of numeric types. (lp#309124)
332 * bug fix: arrays declared intersection and union types can have their
333 upgraded element type derived. (lp#316078)
334 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
335 threads started during profiling. (lp#472499)
336 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
338 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
339 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
340 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
341 values instead of signaling an error. (lp#309093)
342 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
344 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
345 declarations (lp#497321)
346 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
347 and failed to detect circular lists (lp#452008)
348 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
350 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
351 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
352 due to it, so that handlers can run.
353 * bug fix: reparsing undefined types if they have become defined since
355 * bug fix: missing &REST type in a proclamation for a function with both
356 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
357 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
358 expanded calls (lp#542174)
359 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
360 than just at toplevel form.
362 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
363 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
364 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
365 but work on type specifiers.
366 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
367 to name a type specifier.
368 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
369 specifier is valid where "valid" basically means "would be accepted as
370 second argument of TYPEP".
371 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
372 returns the function's declared, or derived FTYPE.
373 * new feature: SB-POSIX now supports accessing the d_ino member of
374 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
375 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
376 provide for seeding a RANDOM-STATE object with user-provided data or
377 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
378 attempt to initialize the returned state from the operating system's
379 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
380 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
381 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
382 * bug fix: Fix grammar and style issues for the docstrings of
383 printer-related variables and functions. (Thanks to mon_key; launchpad
385 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
387 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
388 in a row even though a handler defered the deadline long into the
390 * bug fix: A deadline handler was run without interrupts enabled for a
391 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
392 in infinitely spinning, non-killable threads.
393 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
394 before reaching the erring stack frame.
395 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
396 real power. (launchpad bug lp#525949)
397 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
398 GENCGC platforms. (launchpad bug lp#529014)
399 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
400 (launchpad bug lp#525916)
401 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
402 (Thanks to Robert Goldman)
404 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
405 * optimization: ROUND with a single single-float or double-float argument
406 is properly inlined when possible.
407 * optimization: Slightly better code is generated for integer<->float
408 conversions and for single-float<->double-float conversions on x86-64.
409 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
410 code for 32-bit and 64-bit rotations on x86-64.
411 * bug fix: The install script changes the ownership of directories as well
412 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
413 launchpad bug lp#508485)
414 * bug fix: TRUNCATE with a single single-float or double-float argument is
415 properly inlined when possible. (launchpad bug lp#489388)
416 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
417 no longer causes a compiler error on x86 and ppc.
418 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
419 always relative to *READTABLE* rather than the passed argument.
421 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
422 * minor incompatible change: threading support is now enabled by default
424 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
426 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
427 are now caught and reported just like errors during macroexpansion.
428 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
429 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
430 * enhancement: ASDF systems can now depends on SB-QUEUE.
431 * fixes and improvements related to Unicode and external formats:
432 ** bug fix: error handling and restart usage in the ucs-2 external format
434 ** there is now an implementation of the ucs-4 external format.
435 ** the utf-16 and utf-32 external formats are supported.
436 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
437 in the environment. setenv() and unsetenv() are also provided. (reported by
438 Fare Rideau; launchpad bug lp#460455)
439 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
440 loading. This ensures sensible errors for .FASL files from other
441 implementations on case-insensitive filesystems. (reported by Willem
442 Broekema; launchpad bug lp#489417)
443 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
444 Willem Broekema; launchpad bug lp#489698).
445 * bug fix: some minor code rearrangements to reenable warning-free building
446 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
447 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
449 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
452 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
453 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
454 * improvement: support O_LARGEFILE access to files larger than 2GB on
455 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
456 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
457 definitions for methods specializing on the passed class itself.
458 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
459 definitions for methods specializing on the passed class itself, or on
461 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
462 about itself during the build (e.g. for M-? in Slime), if this flag is
463 enabled in customize-target-features.lisp. This will increase the core
464 size by about 5-6mb, though, so it's mostly interesting to SBCL
466 * new feature: various GENCGC tuning parameters have been experimentally
467 documented and exported from SB-EXT. See documentation for details.
468 * fixes and improvements related to Unicode and external formats:
469 ** the Unicode character database has been upgraded to the
470 Unicode 5.2 standard, giving names and properties to a number of new
471 characters, and providing a few extra characters with case
473 ** improvement: restarts for providing replacement input/output on coding
474 errors for fd-stream external formats.
475 ** improvement: where :<encoding> is a keyword corresponding to an
476 external format the system supports, it is now possible to specify
477 (:<encoding> :replacement <character>) as an external format which will
478 automatically substitute <character> on encoding or decoding errors for
479 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
481 ** improvement: the file streams underlying the standard streams (such as
482 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
483 which uses the replacement mechanism to handle encoding errors,
484 preventing various infinite error chains and unrecoverable I/O
486 ** minor incompatible change: the utf-8 external format now correctly
487 refuses to encode Lisp characters in the surrogate range (char-codes
488 between #xd800 and #xdfff).
489 ** fix a typo preventing conversion of strings into octet vectors
490 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
492 ** fix a bug in the octet multibyte handling of decoding errors and the
493 USE-VALUE restart. (launchpad bug lp#314939)
494 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
495 restart on fd-stream decoding errors.
496 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
497 error is near the end of file.
498 ** fix a double-error case in unibyte octet conversions, when the first
499 use of USE-VALUE is ignored.
500 ** fix bugs in handling of undefined code points in unibyte encodings.
501 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
502 streams after an UNREAD-CHAR.
503 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
504 object is allocated in a boxed region of dynamic space.
505 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
506 fork with multiple Lisp threads running is made, instead of going
507 ahead with unpredictable consequences. (reported by Leslie Polzer)
508 * bug fix: uses of slot accessors on specialized method parameters within
509 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
510 error while finalizing the class. This fix may cause classes with slot
511 accessors to be finalized later than previously. (reported by Lars Rune
512 Nøstdal; launchpad bug lp#473699)
513 * bug fix: restore buildability on the MIPS platform. (regression from
514 1.0.30.38, reported by Samium Gromoff)
515 * bug fix: inspecting closures is less likely to fail with a type error.
516 * bug fix: no timer starvation when setting the system clock back.
517 (launchpad bug lp#460283)
518 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
519 standard pprint dispatch table as specified by CLHS.
520 * bug fix: give CLISP a hint about a type declaration to enable it to build
521 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
523 * bug fix: correctly dump literal objects in defaulting forms of arglists.
524 (reported by Attila Lendvai; launchpad bug lp#310132)
525 * bug fix: distinguish in type specifiers between arrays that might be
526 complex and arrays that are definitely complex. (launchpad bug lp#309129)
527 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
528 type. (reported by Levente Mészáros; launchpad bug lp#485972)
529 * bug fix: setting the value of a symbol-macro within a method in the
530 presence of type declarations works properly again. (reported by Iban
531 Hatchondo; launchpad bug lp#485019)
533 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
534 * optimization: faster FIND and POSITION on strings of unknown element type
535 in high SPEED policies. (thanks to Karol Swietlicki)
536 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
538 * improvement: better error signalling for bogus parameter specializer names
539 in DEFMETHOD forms (reported by Pluijzer)
540 * bug fix: DELETE-FILE once again works on logical pathnames (regression
542 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
544 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
545 removes previous default initargs (reported by Lars Rune Nøstdal and
547 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
548 lambda-lists. (reported by Peter Seibel)
549 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
550 correctly when starting from an executable core without saved runtime
551 options (reported by Faré Rideau, thanks to Zach Beane)
552 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
553 an optimization note instead. (reported by Martin Cracauer)
554 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
555 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
556 new process group if it doesn't need to share stdin with the sbcl
557 process. (thanks to Leslie Polzer)
558 * bug fix: SATISFIES could be misoptimized to refer to a local function.
559 (reported by Stanislaw Halik)
561 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
562 * improvement: stack allocation is should now be possible in all nested
563 inlining cases: failure to stack allocate when equivalent code is manually
564 open coded is now considered a bug.
565 * improvements related to Unicode:
566 ** the Unicode character database has been upgraded to the
567 Unicode 5.1 standard, giving names and properties to a number of new
568 characters, and providing a few extra characters with case
570 ** the system now recognizes and produces names for Unicode Hangul
572 ** the EBCDIC-US external-format is now supported for octet operations
573 (as well as for stream operations).
574 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
575 be used to output toplevel compile-time effects into a separate .CFASL
577 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
578 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
580 * optimization: TRUNCATE on known single- and double-floats is upto 25%
582 * optimization: division of floating point numbers by constants uses
583 multiplication by reciprocal when an exact reciprocal exists.
584 * optimization: multiplication of single- and double-floats floats by
585 constant two has been optimized.
586 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
587 sufficient type information is available. (thanks to Leslie Polzer)
588 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
589 known structure objects are as efficient as defstruct generated accessors.
590 * optimization: unused vector creation can now be optimized away.
591 * improvement: ASDF systems can now depends on SB-INTROSPECT.
592 * improvement: a STYLE-WARNING is signalled when a generic function
593 clobbers an earlier FTYPE proclamation.
594 * improvement: the compiler is able to track the effective type of
595 generic function across method addition and removal even in the
596 absence of an explicit DEFGENERIC.
597 * improvement: DESCRIBE now reports on symbols naming undefined
598 but assumed or declared function as well.
599 * improvement: recompilation of systems using SB-GROVEL now works
600 (thanks to Leslie Polzer)
601 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
602 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
604 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
605 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
606 well as user defined declaration names.
607 ** VARIABLE-INFORMATION is now aware of alien variables.
608 * improvement: improved address space layout on OpenBSD (thanks to Josh
610 * improvement: pretty-printing of various Lisp forms has been improved
611 (thanks to Tobias Rittweiler)
612 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
613 unused were deleted in safe code. (reported by John Fremlin)
614 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
616 * bug fix: some out-of-line array predicates were missing (reported by
618 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
620 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
621 (thanks to Larry D'Anna)
622 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
623 as well. (reported by Josh Elsasser)
624 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
625 leading to possible attempts to delete the same file twice. See docstring
626 on DELETE-FILE for details. (reported by John Fremlin)
627 * bug fix: DELETE-FILE once again deletes the file named by the pathname
628 designator argument, rather than its truename. (reported by Luis
630 * bug fix: the low-level debugger had 32-bit assumptions and was missing
631 information about some array types. (thanks to Luis Oliveira)
632 * bug fix: moderately complex combinations of inline expansions could
633 be miscompiled if the result was declared to be dynamic extent.
634 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
635 form (+ <variable> <integer>) were miscompiled under certain
637 * bug fix: in some cases no compiler note about failure to stack allocate
638 was emitted, even if the objects were in fact heap allocated.
639 * bug fix: minor violation of "otherwise inaccessible" rule for stack
640 allocation could cause objects users might reasonably expect to
641 be heap allocated to be stack allocated.
642 * bug fix: DESCRIBE signalled an error for generic functions under
643 certain circumstances. (thanks to Leslie Polzer)
644 * bug fix: Fixed spelling of an error message.
646 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
647 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
648 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
649 of SB-THREAD:THREAD-ERROR-THREAD.
650 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
651 * new feature: docstrings for local and anonymous functions are no longer
652 discarded. (thanks to Leslie Polzer)
653 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
654 values in other threads.
655 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
656 about object allocation.
657 * optimization: division of a real float by a complex float is implemented
658 with a specialised code sequence.
659 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
660 keywords is an order of magnitude faster.
661 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
662 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
663 methods, and similarly for non-standard metaclass classes as long as there
664 are no methods additional on MAKE-INSTANCE.
665 * optimization: more efficient type-checks for FIXNUMs when the value
666 is known to be a signed word on x86 and x86-64.
667 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
668 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
670 * optimization: compiler is smarter about delegating argument type checks to
672 * optimization: several character functions are now compiled somewhat more
673 efficiently. (reported by Lynn Quam)
674 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
675 * improvement: less unsafe constant folding in floating point arithmetic,
676 especially for mixed complex/real -float operations.
677 * optimization: constant double and single floats are stored in native
678 unboxed format on x86[-64].
679 * optimization: smarter code for arithmetic operations with constant floats,
680 complex floats, or integers on x86[-64].
681 * optimization: smarter code for conjugate/multiplication of float complexes
682 and abs/negate of floats on x86-64.
683 * optimization: more efficient complex float and real float operations on
685 * improvement: complex float division is slightly more stable.
686 * improvement: DESCRIBE output has been reworked to be easier to read and
687 contains more pertinent information.
688 * improvement: failure to provide requested stack allocation compiler notes
689 provided in all cases (requested stack allocation not happening without a
690 note being issued is now considered a bug.)
691 * bug fix: SB-POSIX exports the documented types and functions
692 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
693 types. (reported by "abhi")
694 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
695 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
696 (thanks to Paul Khuong)
697 * bug fix: looping around HANDLER-CASE could silently consume stack space
698 on each iteration. (reported by "foobar")
699 * bug fix: better error signalling when calls to functions seeking elements
700 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
701 (reported by Tobias Rittweiler)
702 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
703 directory components now works as it used to. (various prolems reported by
704 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
705 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
706 (reported by Elliot Slaughter, thanks to Stas Boukarev)
707 * bug fix: bogus undefined variable warnings from fopcompiled references to
708 global variables. (thanks to Lars Rune Nøstdal)
709 * bug fix: foreign function names should now appear in backtraces on
710 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
711 * bug fix: SETF compiler macro documentation strings are not discarded
713 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
714 (thanks to Alex Plotnick)
715 * bug fix: SLEEP accepts large integer arguments, truncating them to
716 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
717 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
718 * bug fix: compiler notes for expensive slot type checks could be emitted
719 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
721 changes in sbcl-1.0.29 relative to 1.0.28:
722 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
723 https://bugs.launchpad.net/sbcl
724 Bugs can be reported directly there, or by sending email to
725 sbcl-bugs@lists.sourceforge.net
726 (no subscription required.)
727 * minor incompatible change: under weak type checking policy integer
728 types are weakened less aggressively.
729 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
730 allowed to return, which causes SBCL to quit with exit status 0. Previously
731 if the function returned with a small integer return value, that value
732 was accidentally reused as the exit status.
733 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
734 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
735 :HASH-FUNCTION argument. Refer to user manual for details.
736 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
738 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
739 microseconds since the Unix epoch on all platforms.
740 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
741 allows the compiler to safely elide boundedness checks for special
743 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
744 the symbol, prohibits both lexical and dynamic binding. This is mainly an
745 efficiency measure for threaded platforms, but also valueable in
747 * new feature: UNC pathnames are now understood by the system on Windows.
748 * optimization: the compiler uses a specialized version of FILL when the
749 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
751 * optimization: accesses to potentially non-simple arrays where element type
752 is known are 50% faster.
753 * optimization: compiler now generates faster array typechecking code.
754 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
756 * optimization: multidimensional array accesses in the absence of type
757 information regarding array rank are approximately 10% faster due to
758 open coding of ARRAY-RANK.
759 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
760 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
762 * optimization: result of call to VECTOR can now be stack allocated.
763 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
764 as long as the resulting array is one-dimensional and has a known
765 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
766 length of the list matches the known length of the vector does not
767 allocate the list as an intermediate step. Ditto for VECTOR and simple
769 * optimization: MAKE-ARRAY can now stack allocate in the presence of
770 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
771 known element type, and is known to be simple and one dimensional.
772 * improvement: SBCL now emits a compiler note where stack allocation was
773 requested but could not be provided (not in all cases, unfortunately)
774 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
775 * improvement: pretty-printing loop has been implemented properly. (thanks
776 to Tobias Rittweiler)
777 * documentation: CLOS slot typechecing policy has been documented.
778 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
779 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
780 pointer, leading to memory faults. (thanks to Bart Botta)
781 * bug fix: better floating point exception handling on x86/OpenBSD.
782 (thanks to Josh Elsasser)
783 * bug fix: exit status from QUIT when called under --script was lost
784 (reported by Hubert Kauker)
785 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
786 same implementation of FILL to initialize the array, even if a more
787 efficient one was available (reported by Stas Boukarev, thanks to
789 * bug fix: potential miscompilation of array stack allocation on x86 and
790 x86-64. (reported by Time Tossavainen)
791 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
792 result in their subforms being treated as top level forms. (reported by
794 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
795 than a machine register could leave garbage in the high bits of the
796 result register (bug 316325).
797 * bug fix: disable address space randomization Linux/x86-64 as well,
798 not just x86-64. (reported by Ken Olum)
799 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
800 generate incorrect code.
801 * bug fix: #201; type inference for CONS and ARRAY types could derive
802 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
803 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
804 could not be assigned to or bound with PROGV. (reported by Lorenz
806 * bug fix: the value of CL:- in the inspector was the previous expression
807 evaluated rather than the expression being evaluated.
808 * bug fix: constants can no longer be locally declared special.
809 * bug fix: signals delivered to threads started from foreign land (read:
810 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
811 thread by blocking all signals and resignalling.
812 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
813 from :INITFORM, if any.
815 changes in sbcl-1.0.28 relative to 1.0.27:
816 * a number of bugs in cross-compilation have been fixed, with the ultimate
817 result that building under (at least) clisp should be much more reliable.
818 * minor incompatible changes: echo-streams now propagate unread-char to the
819 underlying input stream, and no longer permit unreading more than one
821 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
822 frames, allowing for instance more reliable backtraces.
823 * improvement: the debugger REPL can now reference lexical variables
824 by name directly for code compiled with (DEBUG 3).
825 * improvement: errors from malformed declarations now have better source
826 paths associated with them. (thanks to Tobias Rittweiler)
827 * optimization: faster local calls on x86/x86-64
828 * bug fix: some error messages for out-of-bound array indexes confused the
829 index and the bound. (thanks to Stas Boukarev)
830 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
832 * bug fix: running regressions tests in shells without OSTYPE set now works.
833 (reported by Harald Hanche-Olsen)
834 * bug fix: more robust static space exhaustion signalling from
835 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
836 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
837 docstring away instead of storing it under names such as (LAMBDA (X)).
838 (reported by Leslie Polzer)
839 * bug fix: timers could go off in the wrong order, be delayed indefinitely
840 (thanks to Ole Arndt for the patch)
841 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
842 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
843 potentially-invalid effective methods in its cache.
844 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
845 instances as well (thanks to Paul Khuong)
846 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
847 SB-POSIX:WAITPID and their C equivalents.
848 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
850 changes in sbcl-1.0.27 relative to 1.0.26:
851 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
852 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
853 * improvement: the system either recovers from stack exhaustion or dies
854 properly as opposed to leaving the user uncertain of whether the handler
855 trampled on some random memory next to the stack or having to rely on
856 --lose-on-corruption (which is still a good idea to use in production
857 because stack exhaustion can happen in signal handlers which will likely
859 * bug fix: fix gc related interrupt handling bug on ppc (regression from
860 1.0.25.37, reported by Harald Hanche-Olsen)
861 * bug fix: work around signal delivery bug in darwin (regression from
862 1.0.25.44, reported by Sidney Markowitz)
863 * bug fix: fix ERROR leaking memory (reported by David Thompson)
865 changes in sbcl-1.0.26 relative to 1.0.25:
866 * incompatible change: an interruption (be it a function passed to
867 INTERRUPT-THREAD or a timer function) runs in an environment where
868 interrupts can be enabled. The interruption can use
869 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
870 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
871 potentially running out of stack. Keep in mind that in the absence
872 of WITHOUT-INTERRUPTS some potentially blocking operation such as
873 acquiring a lock can enable interrupts.
874 * incompatible change: GC-OFF and GC-ON are removed, as they were
875 always unsafe. Use WITHOUT-GCING instead.
876 * new feature: runtime option --disable-ldb
877 * new feature: runtime option --lose-on-corruption to die at the
878 slightest hint of possibly non-recoverable errors: running out of
879 memory, stack, alien stack, binding stack, encountering a memory
880 fault, etc. In the absence of --lose-on-corruption a warning is
882 * enhancement: detect binding stack exhaustion
883 * enhancement: detect alien stack exhaustion on x86/x86-64
884 * improvement: generally more stable and reliable interrupt handling
885 * improvement: there is a per thread interruption queue,
886 interruptions are executed in order of arrival
887 * improvement: a repeating timer reschedules itself when the it has
888 finished, but expiration times are spaced equally. If an
889 expiration time is in the past it will trigger after a short grace
890 period that may give a chance to other things to run.
891 * optimization: slightly faster gc on multithreaded builds
892 * optimization: faster WITHOUT-GCING
893 * bug fix: when JOIN-THREAD signals an error, do it when not holding
894 important locks so that the debugger/handler doesn't produce
895 recursive errors or deadlock.
896 * bug fix: real-time signals are not used anymore, so no more
897 hanging when the system wide real-time signal queue gets full.
898 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
900 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
901 * bug fix: fix random memory faults related to interrupts on alpha
902 * bug fix: fix random memory faults related to interrupts on sparc
903 * bug fix: fix deadlocks related to starting threads
904 * bug fix: fix deadlines on locks on futex platforms
905 * bug fix: restore errno in signal handlers
906 * bug fix: fix deadlocks related to hash tables
907 * bug fix: fix deadlocks in pcl
909 changes in sbcl-1.0.25 relative to 1.0.24:
910 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
911 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
912 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
913 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
914 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
915 better name and does not return values so stale on multiprocessor systems.
916 Also, HOLDING-MUTEX-P was added for about the only sane usage of
918 * improvement: unithread builds keep track of MUTEX-VALUE.
919 * improvement: reading from a TWO-WAY-STREAM does not touch the output
920 stream anymore making it thread safe to have a concurrent reader and
921 a writer, for instance, in a pipe.
922 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
923 arguments, making compiler-macros for SETF-functions able to inspect
924 their constant arguments.
925 * improvement: COMPILE-FILE reports times with millisecond accuracy
926 (thanks to Luis Oliveira)
927 * optimization: CHAR-CODE type derivation has been improved, making
928 TYPEP elimination on subtypes of CHARACTER work better. (reported
929 by Tobias Rittweiler, patch by Paul Khuong)
930 * bug fix: setting alien structure fields of type struct by value now
931 computes the right offset for the memory copy.
932 * bug fix: compilation problem involving inlined calls to aliens with
933 result type VOID. (reported by Ken Olum)
934 * bug fix: #235a; sequential inline expasion in different policies no
935 longer reuses the functional from the previous expansion site.
936 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
937 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
938 * bug fix: named ENUMs in multiply-referenced alien record types no longer
939 cause an implied type redefinition. Regression from 1.0.21.29.
940 * bug fix: sign-extension of small signed return values now works with C
941 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
942 * improvements to the Windows port:
943 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
944 Westfold, thanks to Rudi Schlatte)
946 changes in sbcl-1.0.24 relative to 1.0.23:
947 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
948 vector of a multidimensional SIMPLE-ARRAY.
949 * new feature: the system now signals a continuable error if standard
950 readtable modification is attempted. (thanks to Tobias Rittweiler)
951 * new feature: DIRECTORY has been extended with a non-standard keyword
952 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
953 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
954 has been robustified and documented better. (thanks to Robert Goldman)
955 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
956 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
957 * tradeoff: constant FORMAT control strings are now compiled unless
958 SPACE > SPEED (previously only when SPEED > SPACE.)
959 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
961 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
963 * bug fix: lexical type declarations are now correctly reported by
964 SB-CLTL2. (reported by Larry D'Anna)
965 * bug fix: STRING-TO-OCTETS did not handle :START properly when
966 using UTF-8 as external format. (thanks to Luis Oliveira)
967 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
968 are signalled correctly. (thanks to Stas Boukarev)
969 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
970 designator. (thanks to Tobias Rittweiler)
971 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
972 designator, and returns T instead of the function. (thanks to
974 * bug fix: direct superclasses of STANDARD-CLASS and
975 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
976 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
977 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
978 when no class with the named slot yet exists no longer causes a
979 compile-time style-warning.
980 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
981 in safe code. (reported by Didier Verna)
982 * bug fix: #430; nested structure constructors can stack allocate.
983 * bug fix: on some 64-bit platforms dynamic space size was truncated
984 to #xffff0000 bytes. (reported by Benjamin Lambert)
985 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
986 REPL unusable. (reported by Daniel Herring)
987 * bug fix: return values of READ-SEQUENCE did not take :START into
988 account on file streams, regressions since 1.0.12.22. (reported by
989 Thomas Russ, patch by Paul Khuong)
990 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
991 method specializer used to confuse permuation vector optimization.
992 * bug fix: system inserted bogus implicit type declarations for local
993 special variables in DEFMETHOD bodies.
994 * bug fix: #354; duplicated frames in backtraces due to
995 non-tail-call-optimized XEPs to functions with return type NIL
997 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
998 initializes structure object slots according to DEFSTRUCT initforms,
999 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1000 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1001 (reported by Bruno Haible and Stephen Wilson)
1002 * bug fix: #395; fill-pointer output streams used now support
1003 element-type BASE-CHAR as well.
1004 * bug fix: compiler error when attempting to derive return value of
1005 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1007 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1009 * bug fix: Mac OS X binaries should now be portable between Leopard
1012 changes in sbcl-1.0.23 relative to 1.0.22:
1013 * enhancement: when disassembling method functions, disassembly
1014 for the associated fast function is also produced.
1015 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1017 * optimization: printing with *PRINT-PRETTY* true is now more
1018 efficient as long as the object being printed doesn't require
1019 special handling by the pretty printer.
1020 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1021 now interact correctly with type declarations.
1022 * partial bug fix: PCL detects infinite recursion during wrapper
1023 validation. (thanks to Attila Lendvai)
1024 * bug fix: #426; nested function calls are inlined properly.
1025 Previously if FOO was an inline function, in calls of the form
1026 (FOO (FOO ...)) the outer call was not inlined.
1027 * bug fix: long long arguments passed in registers to alien
1028 functions on PowerPC Linux and NetBSD are now handled correctly
1029 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1031 changes in sbcl-1.0.22 relative to 1.0.21:
1032 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1033 for the shared object in the current directory, but passes the native
1034 namestring of the designated pathname to the operation system's shared
1035 object loading function as-it.
1036 * minor incompatible change: --disable-debugger toplevel option now takes
1037 effect before processing of initialization files and --eval or --load
1039 * new feature: new commandline argument: --script, which supports
1040 shebang lines. See documentation for details. (based on work by
1042 * new feature: SAVE-LISP-AND-DIE can save current values of
1043 --dynamic-space-size and --control-stack-size in the executable core,
1044 causing it to skip normal runtime option processing. See documentation
1045 for details. (thanks to Zach Beane)
1046 * enhancement: inoccous calls to EVAL or generic functions dispatching
1047 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1048 * enhancement: the system no longer resignals errors from --load and
1049 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1050 associated with the original error to be lost. (thanks to Ariel
1052 * enhancement: :DONT-SAVE keyword argument has been added to
1053 LOAD-SHARED-OBJECT for controlling interaction with
1054 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1055 the effects of an earlier LOAD-SHARED-OBJECT call.
1056 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1057 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1058 provided. (reported by Cedric St-Jean)
1059 * bug fix: circularity handling in the reader did not treat raw
1060 structure slots correctly. (reported by Cedric St-Jean)
1061 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1062 file descriptors when there were none.
1063 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1064 was broken. (reporteed by Willem Broekema)
1065 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1066 pathnames without a directory.
1067 * bug fix: COMPILE-FILE did not warn about undefined variable
1068 references at toplevel, and LOAD of the resulting fasl did
1069 not signal an error.
1070 * bug fix: functions with non-required arguments used to end up with
1071 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1072 * bug fix: redefining a function with non-required arguments didn't
1073 update the system's knowledge about its call signature properly.
1074 * bug fix: fixed #431; incompatible alien record type redefinitions
1075 are detected and handled. (reported by Neil Haven)
1076 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1077 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1079 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1080 after alien stack frames.
1081 * bug fix: strings passed to mk{s,d}temp lacked null termination
1083 changes in sbcl-1.0.21 relative to 1.0.20:
1084 * new feature: the compiler is able to track the effective type of a
1085 generic function across method addition and removal.
1086 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1087 appropriately typed structure slots without locking.
1088 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1089 information like those gathered by TIME using a programming-friendly
1091 * new feature: TIME reports time taken even if the form performs a
1092 non-local transfer of control.
1093 * enhancement: reduced conservativism on GENCGC platforms: on
1094 average 45% less pages pinned (measured from SBCL self build).
1095 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1096 mutate constant symbols or violate declaimed type of the symbol.
1097 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1098 sleeping on the semaphore in heavily contested semaphores.
1099 * bug fix: semaphores and condition variables were not interrupt
1101 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1102 owned by other threads anymore.
1103 * bug fix: FIND on lists called KEY outside the specified
1104 subsequence. (reported by budden)
1105 * bug fix: LOG doesn't use single-float intermediate results when
1106 given mixed integer and double-float arguments, leading to better
1107 precision. (reported by Bob Felts)
1108 * bug fix: LOG with base zero returned values of inconsistent type.
1110 changes in sbcl-1.0.20 relative to 1.0.19:
1111 * minor incompatible change: OPTIMIZE qualities
1112 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1113 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1114 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1115 * documentation: some slot access efficiency guidelines have been
1116 added to the user manual.
1117 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1118 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1119 as ASSOC and MEMEBER.
1120 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1121 to more efficient EQ-comparison versions more often.
1122 * optimization: enhanced derivation of DOLIST iteration variable type
1124 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1126 * optimization: runtime lookup of function definitions can be
1127 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1128 * optimization: compiler is able to derive the return type of
1129 (AREF (THE STRING X) Y) as being CHARACTER.
1130 * optimization: CLRHASH on empty hash-tables no longer does pointless
1131 work. (thanks to Alec Berryman)
1132 * optimization: REPLACE deftransforms don't punt when :START1 or
1134 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1135 no longer emits a code deletion note. (reported by Andrew
1137 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1138 functions with an odd number of &OPTIONAL arguments, a &REST
1139 argument, and one or more &KEY arguments at the call site.
1140 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1141 arguments appeared at call sites as well.
1142 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1143 READ-LINE &co can no longer read from them afterwards. (reported
1145 * bug fix: fixed #427: unused local aliens no longer cause compiler
1146 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1148 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1149 alien-stack leakage. (reported by Andy Hefner)
1150 * bug fix: PROGV signals an error when an attempt to violate declared
1151 type of a variable or bind a constant is made.
1152 * bug fix: SET signals an error when an attempt to violate declared
1153 type of a variable is made.
1154 * bug fix: restart computation during the execution of a restart
1155 test function no longer causes infinite recursion. (reported by
1157 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1158 signals an error. (thanks to Pierre Mai)
1159 * bug fix: EXPORT left symbol unexported in conflict situations.
1160 (thanks to Michael Weber)
1161 * bug fix: correctly handle name conflicts involving CL:NIL.
1162 (thanks to Michael Weber)
1163 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1164 conflicts arising from USEing package with conflicting symbols
1165 correctly. (thanks to Michael Weber)
1167 changes in sbcl-1.0.19 relative to 1.0.18:
1168 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1169 warnings that go otherwise unhandled will be muffled if they are
1170 of the type that's the value of this variable.
1171 * optimization: stack allocation is slightly more efficient on x86
1173 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1174 where a raw slot always is initialized using the initform whose
1175 type is not know sufficiently well a compile-time are now compiled
1176 correctly. (reported by John Morrison)
1177 * bug fix: compiler no longer makes erronous assumptions in the
1178 presence of non-foldable SATISFIES types.
1179 * bug fix: stack analysis missed cleanups of dynamic-extent
1180 arguments in non-let-converted calls to local functions.
1181 * improvements to the Windows port:
1182 ** adjusted address spaces for building on both Win32 and
1183 Win64. (thanks for John Connors)
1184 * fixed some bugs revealed by Paul Dietz' test suite:
1185 ** interval arithmetic during type derivation used inexact integer
1186 to single-float coercions.
1187 ** arithmetic operations involving large integers and single
1188 floats give the same results in compiled and interpreted code.
1189 ** deriving the result type of COERCE no longer signals an error
1190 if the derived type of the second argument is a MEMBER type
1191 containing invalid type specifiers.
1192 ** ADJOIN with constant NIL as second argument works correctly.
1193 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1195 changes in sbcl-1.0.18 relative to 1.0.17:
1196 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1197 profiles only the current thread.
1198 * minor incompatible change: changes to SYMBOL-VALUE of constants
1199 defined with DEFCONSTANT now signal an error.
1200 * enhancement: SB-SPROF now has support for wallclock profiling,
1201 and is also able to profile specific threads. REPORT output
1202 has also additional sorting options.
1203 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1205 * optimization: structure allocation has been improved
1206 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1207 ** out of line constructors are ~10% faster.
1208 ** inline constructors are ~15% faster.
1209 ** inline constructors are capable of dynamic extent allocation
1210 (generally on x86 and x86-64, in some cases on other platforms
1212 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1214 * optimization: file compiler is now able to coalesce non-circular
1215 lists, non-base strings, and bit-vectors. Additionally, constants
1216 are never referenced through SYMBOL-VALUE at runtime.
1217 * optimization: code defining methods on PRINT-OBJECT (and other
1218 generic functions in the COMMON-LISP package) now loads faster.
1219 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1221 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1222 fasl is now deleted. (reported by Attila Lendvai)
1223 * bug fix: READ-LINE always returned NIL for the last line in files.
1224 (reported by Yoshinori Tahara)
1225 * bug fix: more accurate disassembly annotations of foreign function
1226 calls. (thanks to Andy Hefner)
1227 * bug fix: trimming non-simple strings and non-string string
1228 designators when the there is nothing to trim works properly.
1229 (thanks to James Knight)
1230 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1231 (thanks to Travis Cross)
1232 * fixed some bugs revealed by Paul Dietz' test suite:
1233 ** NIL is a valid function name (regression at 1.0.13.38)
1234 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1235 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1236 fill pointers properly (regression at 1.0.12.23)
1237 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1238 displacement indices properly (regression at 1.0.12.23)
1240 changes in sbcl-1.0.17 relative to 1.0.16:
1241 * temporary regression: user code can no longer allocate closure
1242 variable storage on stack, due to bug 419 without explicitly
1243 requesting it. Please consult sbcl-devel for advice if you need to
1244 use this feature in the meanwhile.
1245 * new feature: runtime argument --control-stack-size can be used to
1246 adjust thread default control stack size.
1247 * enhancement: improved TIME output
1248 ** all times are reported using the measured accuracy (milliseconds
1249 for real and GC times, microseconds for everything else.)
1250 ** processor cycle counts on x86 and x86-64.
1251 ** interpreted forms are counted for both evaluator modes.
1252 ** number of lambdas converted by the compiler is reported.
1253 ** CPU percentage report (computed from real and total run time.)
1254 ** more comprehensive run time reporting, using a condenced format
1255 ** interperted form, lambda, and page fault counts are omitted
1257 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1259 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1260 * optimization: two argument forms of LAST are upto ~10% faster
1261 in normal SPEED policies.
1262 * optimization: NCONC no longer needs to heap cons its &REST list
1263 in normal SPEED policies.
1264 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1265 to Sidney Markowitz)
1266 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1267 regression since 1.0.9.1. (thanks to Eric Marsden)
1268 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1269 since 1.0.15.36. (thanks to Paul Khuong)
1270 * bug fix: LAST when always returned the whole list when given a bignum
1271 as the second argument.
1272 * bug fix: dynamic extent allocation of nested lists and vectors
1273 could leak to otherwise accessible parts.
1274 * bug fix: invalid optimization of heap-allocated alien variable
1276 * bug fix: fasl header checking is less vulnerable to different
1277 platform word lengths.
1278 * bug fix: more correct assembler syntax for GNU binutils
1279 2.18.50.0.4 support. (thanks to Marijn Schouten)
1280 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1282 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1283 declarations) successfully. (reported by Attila Lendvai)
1285 changes in sbcl-1.0.16 relative to 1.0.15:
1286 * minor incompatible change: revert the changes to sb-posix's error
1287 signaling added in 1.0.14.
1288 * minor incompatible change: change PROBE-FILE back to returning
1289 NIL whenever we can't get a truename, as was the case before 1.0.14.
1290 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1291 inherits from ERROR instead of just CONDITION.
1292 * new feature: SB-INTROSPECT can provide source locations for instances
1293 as well. (thanks to Tobias Rittweiler)
1294 * optimization: binding special variables now generates smaller code
1295 on threaded platforms.
1296 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1297 and cases where no :TEST is given but the compiler can infer that
1298 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1299 * optimization: better LOGNOT on fixnums.
1300 * optimization: modular arithmetic for a particular requested width
1301 is implemented using a tagged representation unless a better
1302 representation is available.
1303 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1304 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1305 for wellformedness and returns a specialized vector. (reported by
1306 Francois-Rene Rideau)
1307 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1308 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1309 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1310 unscheduling timer at the same time as another timer fires.
1311 * bug fix: don't reschedule timers for dead threads.
1312 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1313 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1314 bogus errors if select() was interrupted.
1315 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1317 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1318 * enhancement: cleaner backtraces for interactive interrupts, as
1319 well as other cases where the interesting frames used to be
1320 obscured by interrupt handling frames.
1321 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1322 now supported, and tracing a whole package using (TRACE "FOO") now
1323 traces SETF-functions as well.
1324 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1325 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1326 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1327 * unreadably printed representation of hash-tables now includes
1329 * bug fix: partially fixed #188: type propagation from assignments
1330 is now more efficient.
1331 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1332 'DOUBLE-FLOAT) are not flushable.
1333 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1334 full address of the object, and none of the tag bits.
1335 * bug fix: readably printing hash-tables now respects other printer
1336 control variables. (reported by Cedric St-Jean)
1337 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1338 keyword with MAKE-HASH-TABLE.
1339 * bug fix: export SB-POSIX:MKSTEMP.
1340 * bug fix: SORT was not interrupt safe.
1341 * bug fix: XREF accounts for the last node of each basic-block as
1343 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1344 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1345 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1346 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1347 create obsolete instances in the case of redefinition or
1348 obsoletion of a superclass. (thanks to Andy Hefner)
1349 * bug fix: Support for the Alpha architecture has been revived; it had
1350 suffered somewhat from lack of maintenance since sbcl-1.0.
1351 * improvements to the Windows port:
1352 ** The system detects the codepage to use at startup, instead of
1353 using the value from the saved core. (thanks to Kei Suzuki)
1355 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1356 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1357 (see documentation for details.)
1358 * revived support for OpenBSD (contributed by Josh Elsasser)
1359 * partially fixed bug #108: ROOM no longer suffers from occasional
1360 (AVER (SAP= CURRENT END)) failures.
1361 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1362 bodies no longer cause a WARNING to be signalled. (reported by
1364 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1365 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1366 the bug in TRUNCATE.) (reported by Michael Weber)
1367 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1368 no samples. (reported by Andy Hefner)
1369 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1370 no longer appear as (NIL ...) frames in backtraces.
1371 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1372 is now actually exported from SB-EXT as documented. (reported by
1374 * bug fix: sb-aclrepl now correctly understands how to inspect
1375 single-floats on 64-bit platforms where single-floats are not boxed.
1376 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1377 yet been finalized. (reported by Levente Meszaros)
1378 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1379 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1380 SBCL-specific optimize qualities.
1382 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1383 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1384 an executable in the search path, and does so in the child
1385 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1386 been removed; it can be found in the CVS history, for somebody who
1387 needs that search behavior (see the manual).
1388 * minor incompatible change: compiler policy re. weakening type
1389 checks has changed: now type checks are weakened only if SAFETY < 2
1391 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1392 unparsing of directory pathnames as files. Analogously,
1393 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1394 filename to parse into a directory pathname.
1395 * enhancement: implicit generic function creation now signals a
1396 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1397 users can bind handlers for and muffle around calls to LOAD.
1398 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1399 to be used (using the default stream external format), and allows
1400 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1401 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1402 strings and vectors whose element-type or simplicity is not fully
1403 known at compile-time.
1404 * optimization: STRING-TRIM and related functions no longer allocate
1405 a new string when no trimming needs to be performed. These functions
1406 are also faster than before when the input string has been declared
1408 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1409 * optimization: READ-LINE is significantly faster for files containing
1411 * optimization: non-open coded uses of character comparison operators
1412 (e.g. char=) no longer cons when called with more than one parameter
1413 on platforms supporting dynamic-extent allocation.
1414 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1415 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1416 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1418 * bug fix: some sequence functions elided bounds checking when
1420 * bug fix: too liberal weakening of union-type checks when SPEED >
1422 * bug fix: more bogus fixnum declarations in ROOM implementation
1425 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1426 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1427 :SYNCHRONIZED argument, which makes the hash-table safe for
1428 concurrent accesses (but not iteration.) See also:
1429 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1430 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1431 * optimization: CONCATENATE on strings is an order of magnitude faster
1432 in code compiled with (> SPEED SPACE).
1433 * optimization: SUBSEQ is ~50% faster on lists.
1434 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1435 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1436 END is smaller then START.
1437 * bug fix: SB-PROFILE will no longer report extra consing for nested
1438 calls to profiled functions.
1439 * bug fix: ROOM implementation had bogus fixnum declarations which
1440 could cause type-errors when calling ROOM on large images.
1441 * bug fix: if file compilation is aborted, the partial fasl is now
1442 deleted, and COMPILE-FILE returns NIL as the primary value.
1443 * bug fix: number of thread safety issues relating to SBCL's internal
1444 hash-table usage have been fixed.
1445 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1446 be returned from its body when the values were being returned
1447 using unknown-values return convection and the W-P-O was wrapped
1448 inside an UNWIND-PROTECT.
1449 * bug fix: sb-posix should now compile again under Windows, enabling
1450 slime to work again.
1452 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1453 * incompatible change: hash-table accessor functions are no longer
1454 automatically protected by locks. Concurrent accesses on the same hash-table
1455 from multiple threads can give inconsistent results or even corrupt the
1456 hash-table completely. Multi-threaded applications should do their own
1457 locking at the correct granularity. In the current implementation it is
1458 still safe to have multiple readers access the same table, but it's not
1459 guaranteed that this property will be maintained in future releases.
1460 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1461 and will signal an error at runtime.
1462 * enhancement: SB-THREAD package now exports a semaphore interface.
1463 * enhancement: CONS can now stack-allocate on x86 and
1464 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1466 * enhancement: nested lists can now be stack allocated on
1467 platforms providing stack allocation support.
1468 * enhancement: dynamic-extent support has been extended to support
1469 cases where there are multiple possible sources for the stack
1471 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1472 if the mutex is uncontested on Linux.
1473 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1474 as specified by the CLHS. (thanks to Tobias Rittweiler)
1475 * bug fix: NaN comparison now works on x86-64.
1476 * bug fix: CLOSE :ABORT T on a stream with pending output now
1478 * bug fix: instances of non-standard metaclasses using standard
1479 instance structure protocol sometimes missed the slot type checks
1481 * bug fix: known functions can be inlined in high-debug code.
1483 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1484 * minor incompatible change: the MSI installer on Windows no longer
1485 associates .lisp and .fasl files with the installed SBCL.
1486 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1487 on Windows. (thanks to Luis Oliviera)
1488 * new feature: SB-CLTL2 contrib module now implements
1489 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1490 * optimization: scavenging weak pointers is now more efficient,
1491 requiring O(1) instead of O(N) per weak pointer to identify
1492 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1493 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1494 method bodies using constant slot-names when the first argument is
1495 a specializer parameter for the method.
1496 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1497 names, when the class of the instance is a direct instance
1498 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1499 as slow as the constant slot-name case.)
1500 * optimization: member type construction is now O(N) instead
1502 * optimization: UNION and NUNION are now O(N+M) for large
1503 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1505 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1506 now more readable in environments like Slime which display it.
1507 (thanks to Tobias C. Rittweiler)
1508 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1509 was able to infer the correct argument type for the object on which
1510 the CAS operation was being performed.
1511 * bug fix: copy propagation interfered with parallel assignment
1512 semantics in local calls. (reported by Paul Khuong)
1513 * bug fix: the signed modular fixnum shift compiled to wrong code on
1514 x86 and x86-64. (spotted by a slight modification to some of
1517 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1518 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1519 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1520 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1522 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1523 and generic function now print the object identity for anonymous
1524 instances. (thanks to Attila Lendvai)
1525 * enhancement: as an extension to MOP, SBCL now supports SETF of
1526 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1527 (thanks to Attila Lendvai)
1528 * enhancement: sb-cover has an alternate annotation mode which puts
1529 the form annotations at the car of the form, instead of annotating
1530 it completely. The benefit of this mode is that it shows better
1531 which forms were instrumented by the compiler.
1532 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1533 by printer control variables. (reported by Dan Corkill)
1534 * bug fix: system leaked memory when delayed output was performed by
1535 the OS in smaller chunks then expected. (thanks to David Smith)
1536 * bug fix: system leaked memory when file streams were not closed
1538 * bug fix: large objects written to slow streams that were modified
1539 after the write could end up with the modified state written to
1540 the underlying file descriptor.
1541 * bug fix: multiple threads operating in parallel on the same stream
1542 could cause buffer-overflows.
1543 * bug fix: source location information is stored correctly
1544 (broken since 1.0.6). This bug would generally show up as the
1545 Slime debugger highlighting the wrong form when the sldb-show-source
1547 * bug fix: Branch forms are again annotated as branches in the sb-cover
1549 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1550 on x86-64. (reported by Gregory Vanuxem)
1551 * bug fix: EQUALP could return wrong results for structures with raw
1552 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1553 word). (reported by Vjacheslav Fyodorov)
1554 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1557 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1558 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1559 atomic compare-and-swap operations on threaded platforms.
1560 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1561 allows assigning a global minimum value to optimization qualities
1562 (overriding proclamations and declarations).
1563 * enhancement: closed over variables can be stack-allocated on x86
1565 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1567 * optimization: slot definition lookup is now O(1). This speeds up
1568 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1569 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1570 * optimization: ASSOC and MEMBER can now be open-coded for all
1571 combinations of keyword arguments when second argument is constant
1572 and SPEED >= SPACE. In other cases a specialized version is
1574 * bug fix: using obsoleted structure instances with TYPEP and
1575 generic functions now signals a sensible error.
1576 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1577 (reported by Kristoffer Kvello)
1578 * bug fix: backtrace construction is now more careful when making
1579 lisp-objects from pointers on the stack, to avoid creating bogus
1580 objects that can be seen by the GC.
1581 * bug fix: defaulting of values in contexts expecting more than 7
1582 variables now works on x86-64. (reported by Christopher Laux)
1583 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1585 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1586 as the property-list of a symbol.
1587 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1588 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1589 situations requested, are once again file-compileable. (reported
1592 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1593 * MOP improvement: support for user-defined subclasses of
1594 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1595 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1596 the expansion of DEFMETHOD, is responsible for generating a form
1597 which creates a list of specializers when evaluated. Additional
1598 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1599 debugging and introspective support.
1600 * minor incompatible change: the (unsupported) spinlock interface
1601 has changed: free spinlock now has the value NIL, and a held spinlock
1602 has the owning thread as its value.
1603 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1604 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1606 * enhancement: name of a socket-stream is now "a socket" instead of
1607 "a constant string".
1608 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1609 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1610 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1611 for generic functions. (Thanks to Tobias C. Rittweiler)
1612 * optimization: bignum printing speed has been improved by 20-40%
1613 (depending on the bignum size.)
1614 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1616 * bug fix: the cache used by the CLOS to store precomputed effective
1617 methods, slot offsets, and constant return values is now thread and
1619 * bug fix: generic function dispatch function updating is now thread
1620 and interrupt safe (in the sense that the known issues have been
1622 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1623 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1624 * bug fix: asdf systems with dependencies to the SB-POSIX or
1625 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1626 * bug fix: interrupt safety of applicable method computation has been
1629 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1630 * new contrib: sb-cover, an experimental code coverage tool, is included
1631 as a contrib module.
1632 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1633 significantly faster.
1634 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1635 produce more efficient code on x86-64 if the compiler can determine
1636 that (+ INDEX <constant>) does not require a bounds check and FOO
1637 has an element type at least 8 bits wide.
1638 * enhancement: a new, experimental synchronous timeout facility is
1639 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1640 * enhancement: when a symbol name conflict error arises, the
1641 conflicting symbols are always printed with a package prefix.
1642 (thanks to Kevin Reid)
1643 * enhancement: stepping is now once again supported on the SPARC and
1644 MIPS platforms. (It is also now more likely to work on CheneyGC
1646 * enhancement: sb-sprof can now also track and report accurate call
1648 * bug fixes: the treatment of non-standard subclasses of
1649 SB-MOP:SPECIALIZER is more correct.
1650 * incompatible change: PURIFY no longer copies the data from the
1651 dynamic space into the static and read-only spaces on platforms
1652 that use the generational garbage collector
1653 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1655 * bug fix: GC race condition occasionally resulting in crashes with
1656 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1658 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1660 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1661 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1662 * bug fix: an asynchronous interrupt could previously leave the
1663 system running with GC inhibited.
1664 * bug fix: a DECLARE form evaluated at top-level now causes an error
1665 rather than silently (or verbosely) returning NIL.
1666 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1667 result in a error being signalled due to source form lookup errors.
1668 (reported by Peter Graves)
1670 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1671 * incompatible change: removed writer methods for host-ent-name,
1672 host-ent-addresses -- changing the values did not update the DNS
1674 * minor incompatible change: changed experimental JOIN-THREAD interface
1675 * documentation: the manual now lists reader and writer methods
1676 in class slot documentation sections. (thanks to Richard M Kreuter)
1677 * documentation: unwinding from asyncronous events has been
1678 documented as unsafe.
1679 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1680 in multithreaded application code.
1681 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1682 platforms. (thanks to James Anderson for the optimization hint)
1683 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1685 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1686 variants no longer cons.
1687 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1688 their NOT- variants no longer cons.
1689 * optimization: EQUAL hash tables no longer use SXHASH for objects
1690 of all data types, but instead use an EQL hash for types for which
1691 EQUAL is the same as EQL.
1692 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1693 are significantly faster.
1694 * optimization: new STRING-OUTPUT-STREAM implementation is much
1695 faster for large outputs and conses 30% less on average.
1696 * enhancement: XREF information is now collected for references made
1697 to global variables using SYMBOL-VALUE and a constant argument.
1698 * enhancement: SIGINT now causes a specific condition
1699 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1700 * bug fix: FILE-POSITION used to signal an error in some cases where
1701 ANSI requires it to return NIL.
1702 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1703 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1704 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1706 * bug fix: bad type declaration in the CLOS implementation has
1707 been fixed. (reported by James Anderson)
1708 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1709 (thanks to Lutz Euler)
1710 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1711 required by the CLHS. (reported by Samium Gromoff)
1712 * bug fix: dead unbound variable references now signal an error.
1713 (reported by Marco Monteiro)
1714 * bug fix: / with an unused value was being deleted in safe code.
1715 (thanks to Marco Monteiro and Kevin Reid)
1716 * bug fix: number of characters that can be written onto a single
1717 line in a file is unlimited.
1718 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1719 been fixed by inhibiting interrupts for when GC is disabled.
1720 * bug fix: some interrupt safety issues with GETHASH, (SETF
1721 GETHASH), CLRHASH and REMHASH have been fixed.
1722 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1723 specifier no longer causes infinite recursion.
1724 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1725 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1726 * bug fix: an &environment argument with the correct variable information
1727 is passed to macros that are expanded during byte compilation.
1728 (reported by Samium Gromoff)
1729 * bug fix: a logic error was causing the hash function for bignums to
1730 have excessive amounts of collisions. (reported by Faré Rideau)
1731 * bug fix: modifying the contents of an array could change the return
1732 value of SXHASH on that array, which is only allowed for strings
1733 and bit vectors. (bug introduced in 0.9.16)
1734 * improvement: the x86-64/darwin port now passes all tests (except
1735 for the debugger tests) but should still be considered
1736 experimental until this is fixed.
1737 * improvement: a style-warning is signaled for CASE (etc) clauses with
1738 duplicate keys. (thanks to Kevin Reid)
1739 * improvement: macos/x86 and macos/x86-64 now use mach exception
1740 handlers for dealing with illegal instructions (for trapping and
1741 error handling) and memory protection violations (for GC).
1743 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1744 * new platform: experimental support for x86-64/darwin (MacOS).
1745 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1746 and getnameinfo sockets functions are used instead of gethostbyaddr
1747 and gethostbyname, on platforms where the newer functions are available.
1748 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1750 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1751 don't print the startup banner, but behave as if --noinform was passed
1752 as a command line argument. (thanks to Kevin Reid)
1753 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1754 * optimization: code using alien values with undeclared types is much faster.
1755 * optimization: the compiler is now able to open code SEARCH in more cases.
1756 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1757 * bug fix: using standardized COMMON-LISP special variables as loop
1758 variables no longer signals bogus package lock violations. (reported
1760 * bug fix: declaring local loop variables to be of a range-limited type
1761 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1762 (reported by Andras Simon)
1763 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1764 bugs remain on x86-64.)
1765 * bug fix: the #= and ## reader macros now interact reasonably with
1766 funcallable instances.
1767 * bug fix: type-checks for function arguments were compiled using the
1768 compiler policy settings of the wrong lexical environment (in 1.0.2
1770 * bug fix: SHADOW accepts characters as string designators, as required
1771 by the spec (thanks to Eric Marsden)
1772 * bug fix: fixed GC safety issues when foreign functions are called with
1773 non-base strings as arguments
1774 * bug fix: more consistent error output for fatal-compiler-warnings, like
1776 * bug fix: functions with proper names were showing up as NIL in
1777 backtraces (reported by Edi Weitz, regression in 1.0.2)
1779 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1780 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1781 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1782 produce more efficient code on the x86 if the compiler can determine
1783 that (+ INDEX <constant>) does not require a bounds check and FOO
1784 has an element type at least 8 bits wide.
1785 * bug fix: references to undefined variables are handled the same way
1786 in toplevel forms as in the normal compiler
1787 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1789 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1790 (thanks to Jon Buller)
1791 * improvement: faster compilation times for complex functions
1792 * improvement: added readlink support to SB-POSIX (thanks to Richard
1795 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1796 * improvement: experimental support for mach exception handling on
1797 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1799 * improvement: support for GBK external format.
1800 (thanks to Chun Tian (binghe))
1801 * improvement: the debugger now displays variables that have been closed
1802 over, in code compiled with (DEBUG 2) or higher
1803 * improvement: support for executable cores on NetBSD (thanks to
1805 * new feature: added a RESTART-FRAME debugger command
1806 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1807 be used to provide an implementation for FILE-POSITION on Gray streams
1808 (thanks to Eric Marsden)
1809 * new feature: add syslog, openlog and closelog support to SB-POSIX
1810 (thanks to Richard Kreuter)
1811 * optimization: the function call overhead in code compiled with
1812 a high DEBUG optimization setting is significantly
1813 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1814 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1815 (thanks to Tony Martinez)
1816 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1817 evaluated once (reported by Kevin Reid)
1818 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1819 works again (thanks to Kilian Sprotte)
1820 * bug fix: an error is signaled for tagbodies with duplicate tags
1821 (thanks to Stephen Wilson)
1822 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1823 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1824 stack frames from alien callbacks.
1825 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1826 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1827 65k pages (thanks to David Woodhouse)
1828 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1830 changes in sbcl-1.0.1 relative to sbcl-1.0:
1831 * new platform: FreeBSD/x86-64, including support for threading.
1832 * new feature: the compiler stores cross-referencing information
1833 about function calls (who-calls), macroexpansion (who-macroexpands)
1834 and special variables (who-binds, who-sets, who-references) for code
1835 compiled with (< SPACE 3). This information is available through the
1836 sb-introspect contrib.
1837 * new feature: users may subclass SEQUENCE, and have instances of
1838 these classes interoperate with standard Common Lisp functions if
1839 a number of methods are defined. (This feature is experimental
1840 and the interface subject to change based on feedback from SBCL
1841 users and the general community)
1842 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1843 x86/x86-64, rather than the previous fixed depth of 8
1844 * improvement: another pthread back-end of mutex "pthread-futex".
1845 * bug fix: non-ascii command-line arguments are processed correctly
1846 (thanks to Yaroslav Kavenchuk)
1847 * bug fix: non-required arguments were not passed correctly when a method
1848 defined using DEFMETHOD was called from a mop-generated method using
1849 CALL-NEXT-METHOD (reported by Pascal Costanza)
1850 * bug fix: recursion is now permitted in accessors through
1851 SLOT-UNBOUND. (reported by Pascal Costanza)
1852 * bug fix: an error was signaled at startup if the HOME environment
1853 variable was defined, but had an empty value (reported by Peter Van Eynde)
1854 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1855 signal a PROGRAM-ERROR, not a BUG.
1856 * bug fix: SB-POSIX:READDIR works when built with large file support.
1857 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1859 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1860 for better automatic indentation support. (thanks to Matt Pillsbury)
1861 * optimization: loading generic functions no longer takes O(n^2) time,
1862 proportional to the amount of methods in the generic function
1863 (reported by Todd Sabin and Jeremy Brown)
1864 * optimization: the FIND and POSITION family of sequence functions
1865 are significantly faster on arrays whose element types have been
1867 * improvements to the Windows port:
1868 ** Intermittent heap corruption problems have been fixed. (thanks
1869 to Alastair Bridgewater)
1870 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1872 ** Lisp is able to unwind foreign exception frames from alien
1873 callbacks. (thanks to Alastair Bridgewater)
1875 changes in sbcl-1.0 relative to sbcl-0.9.18:
1876 * improvement: experimental support for threading on FreeBSD/x86.
1877 (thanks to NIIMI Satoshi)
1878 * improvement: runtime option --dynamic-space-size can be used
1879 to set the size of the dynamic space reserved on startup.
1880 * improvement: floating point modes in effect are now saved in
1881 core, and restored on startup.
1882 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1883 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1884 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1885 threads are not running after *SAVE-HOOKS* have run.
1886 * improvement: writes to CLOS instance slots are type-checked in code
1887 compiled with (SAFETY 3)
1888 * improvement: floating-point exception handling on FreeBSD (thanks to
1890 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1891 (thanks to Zach Beane)
1892 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1894 * improvement: added support for the Shift-JIS external format.
1895 (contributed by NIIMI Satoshi)
1896 * improvement: callbacks are supported on Linux/PPC. (thanks to
1898 * bug fix: compiler bug triggered by a (non-standard) VALUES
1899 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1900 * bug fix: file compiler no longer confuses validated and already
1901 dumped structurres. (reported by Kaersten Poeck)
1902 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1903 fill-pointer signals a type-error as required. (thanks to
1905 * bug fix: disassemly of funcallable instances works.
1906 * bug fix: single stepping on PPC.
1907 * bug fix: fix thread-safety problems in the type system (generally
1908 manifesting as nonsensical errors like "STRING is a bad type specifier
1909 for sequences" or "The value 1 is not of type FIXNUM")
1910 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1911 (reported by Josip Gracin)
1912 * bug fix: an error is signaled for attempts to displace arrays with
1913 incompatible element types (thanks to Mario Mommer)
1914 * bug fix: more correct handling of wide characters in debug info
1915 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1916 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1917 and don't cause extra consing
1918 * optimization: MAP and MAP-INTO are significantly faster on vectors
1919 whose elements types have been declared.
1920 * Improvements to SB-SPROF:
1921 ** Support for allocation profiling
1922 ** Reduced profiling overhead, especially for long profiling runs
1923 * Improvements to the Windows port:
1924 ** floating point exceptions are now reported correctly.
1925 ** stack exhaustion detection works partially.
1926 ** more accurate GET-INTERNAL-REAL-TIME.
1927 ** better RUN-PROGRAM behaviour in case of errors in the child
1929 ** PROBE-FILE now simplifies pathnames correctly.
1930 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1931 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1932 1st 1970 (although time timezone data will be unreliable).
1933 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1935 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1936 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1937 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1939 * bug fix: two potential GC deadlocks affecting threaded builds.
1940 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1941 returns T (reported by Anton Kazennikov)
1942 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1943 with non-variable places
1944 * bug fix: remove a race condition in the setting of
1945 funcallable-instance functions, this should make threaded CLOS
1946 code more stable against memory faults.
1947 * bug fix: corruption of specials when unbinding is interrupted by an
1948 asynchronous unwind (reported by Hannu Koivisto)
1949 * improvement: the debugger will now also display local variables that
1950 are only used once, for code compiled with a DEBUG optimization quality
1953 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1954 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1955 * incompatible change: External-format support for FFI calls. The
1956 SB-ALIEN:C-STRING no longer implies an ASCII
1957 external-format. Instead the string is subject to external-format
1958 conversion. Additionally return values of type SB-ALIEN:C-STRING
1959 are by default of type (SIMPLE-ARRAY CHARACTER), not
1960 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1961 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1962 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1963 * incompatible change: SB-EXT package no longer contains the
1964 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1965 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1967 * incompatible change: the single-stepper is no longer available
1968 on Alpha, Mips and Sparc platforms.
1969 * minor incompatible change: the direct superclasses of
1970 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1971 not (STANDARD-OBJECT FUNCTION). This makes the
1972 class-precedence-lists of GENERIC-FUNCTION and
1973 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1975 * minor incompatible change: the default stream external format on
1976 non-unicode SBCL is no longer detected from the locale, but is always
1978 * new feature: Add a version of evaluator that uses an interpreter instead
1979 of the compiler. EVAL still uses the compiler by default, to switch it
1980 to use the interpreter, set the value of the variable
1981 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1982 * minor incompatible change: the single-stepper REPL has been merged
1983 with the normal debugger (see the "Stepping" heading of the debugger help
1984 for more details). The debugger command STEP will no longer switch
1985 to the single-stepper REPL.
1986 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1987 for a type now works.
1988 * bug fix: loading of default sysinit file works. (thanks to Leonid
1990 * bug fix: better detection of circularities in the file-compiler.
1991 (reported by Marco Monteiro)
1992 * bug fix: the CL pathname functions now work with files that have
1993 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1994 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1995 systems with Unix98 pty semantics.
1996 * bug fix: ASDF-INSTALL will now work with bsd tar.
1997 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1999 * bug fix: timers expiring in dead threads no longer cause a
2000 type-error (reported by Paul "Nonny Mouse").
2001 * bug fix: thanks to more lightweight single-stepper instrumentation,
2002 code compiled with (DEBUG 3) will compile and execute significantly faster,
2003 and will have more accurate type-inferencing than before
2004 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2005 whose bindings are modified
2006 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2007 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2008 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2009 CL:SOFTWARE-VERSION with proper version
2011 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2012 * feature: implemented the READER-METHOD-CLASS and
2013 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2014 as specified by AMOP.
2015 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2017 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2018 (thanks to Lutz Euler)
2019 * optimization: hashing of general arrays and vectors has been
2020 improved. (reported by Any Fingerhut)
2021 * enhancement: SB-INTROSPECT is now able to find definitions of
2022 profiled functions. (thanks to Troels Henriksen)
2023 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2024 as well, allowing compiler-macros for SETF-functions to expand.
2025 * enhancement: step-instrumentation no longer wraps known
2026 single-value functions with multiple-value context, allowing
2027 better type inference.
2028 * fixed bug #337: use of MAKE-METHOD in method combination now works
2029 even in the presence of user-defined method classes. (reported by
2030 Bruno Haible and Pascal Costanza)
2031 * fixed bug #339(c): if there are applicable methods not part of any
2032 long-form method-combination group, call INVALID-METHOD-ERROR.
2033 (reported by Bruno Haible)
2034 * fixed bug #361: the :FUNCTION initarg in the protocol for
2035 initialization of methods can now be used to override
2036 internally-produced optimized functions. (reported by Bruno
2038 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2039 system-provided lambda expression no longer cause warnings about
2040 unbound #:|pv-table| symbols.
2041 * bug fix: improved the handling of type declarations and the
2042 detection of violations for keyword arguments with non-constant
2044 * bug fix: potentially erronous calls to PATHNAME and
2045 MERGE-PATHNAMES were being flushed in some cases.
2046 (reported by Richard Kreuter)
2047 * bug fix: compiled calls to TYPEP were mishandling obsolete
2048 instances. (reported by James Bielman and Attila Lendvai)
2049 * bug fix: format strings with ~> without matching ~< no longer
2050 trigger an AVER, but signal an understandable error instead.
2051 (reported by Antonio Martinez)
2052 * bug fix: specifying an output-file without a pathname-type for
2053 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2054 of input-file instead of "fasl". (reported by Robert Dodier)
2055 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2056 (reported by James Y Knight).
2057 * bug fix: compiler-macros-function did not consider the environment
2058 argument for shadowing by local functions.
2059 * bug fix: compiler-macros expansion was inhibited by local INLINE
2061 * bug fix: inline expansions of known functions were subject to
2062 step-instrumentation in high debug policies, leading to problems
2063 with type-inference.
2064 * bug fix: compiler failed to differentiate between different CONS
2065 types in some cases.
2066 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2067 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2068 * bug fix: #368: incorrect use of expressed vs. upgraded array
2070 * bug fix: #306a: more precise unions of array types.
2071 * thread-safety improvements:
2072 ** CONDITION-WAIT could return early on Linux, if the thread was
2073 interrupted and subsequently continued with SIGCONT.
2074 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2076 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2077 * added support for the ucs-2 external format. (contributed by Ivan
2079 * minor incompatible change: pretty printing of objects of type
2080 (cons symbol) is, in the default pprint-dispatch-table, now
2081 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2083 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2084 called later in a class's lifetime, possibly as late as when the
2085 first instance of the class is created. Previously,
2086 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2087 class became finalizeable.
2088 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2089 for multibyte external-format streams. (thanks to "vbzoli")
2090 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2091 with :ALLOCATION :CLASS inherited from superclasses of the
2093 * fixed bug: anonymous classes can now be created using the :NAME
2094 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2095 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2096 * fixed bug: core-files saved with :EXECUTABLE T can again be
2097 executed when SBCL_HOME isn't set. (reported by James Knight)
2098 * fixed bug: toplevel LOCALLY forms with declarations could
2099 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2100 * fixed bug: printing from several different threads using different
2101 values of *print-case* could cause invalid output, due to
2102 some internal special variables of the printer not being bound
2103 thread-locally (reported by Max Mikhanosha)
2104 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2105 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2106 (reported by Pascal Costanza)
2107 * fixed bug: FINALIZE-INHERITANCE is called from
2108 REINITIALIZE-INSTANCE on classes when the class has previously
2109 been finalized, as required by AMOP.
2110 * minor code generation optimizations:
2111 ** better register allocation in CLOS dispatching functions
2112 ** overflow detection when coercing signed bytes to fixnums on x86-64
2113 ** is now implemented with one IMUL instruction instead of three shifts
2114 ** more efficient bit-vector access on x86 and x86-64
2115 ** more efficient access to raw structure slots on x86 and x86-64
2116 * fixed some bugs revealed by Paul Dietz' test suite:
2117 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2118 return its argument.
2120 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2121 * feature: thread support on Solaris/x86, and experimental thread support
2123 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2125 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2126 default method for SLOT-UNBOUND.
2127 * minor incompatible change: prevent the user from specializing the
2128 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2129 somewhat counter to the intent of the protocol, I (CSR) think, and
2130 additionally it just doesn't work in SBCL as currently
2131 implemented, thanks to optimizations (that are always valid for
2132 the other three SLOT-VALUEish functions, but not for the setter).
2133 * minor incompatible change: the :SB-LDB feature is now enabled by
2134 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2135 the low-level debugger.
2136 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2137 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2138 down to an SB-SYS:FD-STREAM, allowing direct communication in
2139 more cases. Temporary files and pipes are still used as a fallback
2141 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2142 on the non-reentrant C functions localtime(3) and gmtime(3).
2143 * bug fix: global optimization policy was not visible in LOCALLY and
2145 * bug fix: class objects can be used as specializers in methods.
2146 (reported by Pascal Costanza)
2147 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2148 with a type error. (reported by blitz_ on #lisp)
2149 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2150 failed with a type error. (reported by Pascal Bourguignon)
2151 * bug fix: merging pathnames against defaults with :DIRECTORY
2152 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2153 (reported by James Y Knight)
2154 * bug fix: saving large (>2GB) cores on x86-64 now works
2155 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2156 constant index and a (simple-array (signed-byte 32)) array
2157 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2158 error (patch by Robert J. Macomber)
2159 * feature: TIME now displays the amount of run-time spent in GC
2160 * bug fix: The debugger now does a better job of respecting
2161 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2162 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2163 workaround for bug 403.)
2164 * bug fix: floating point exception handling now works on FreeBSD
2165 (thanks to NIIMI Satoshi)
2166 * fixed some bugs revealed by Paul Dietz' test suite:
2167 ** MISC.641: LET-conversion were not supposed to work in late
2169 * improvements to the Win32/x86 port:
2170 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2171 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2173 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2174 * new feature: source path information is generated for macro-expansion
2175 errors for use in IDE's like Slime (thanks to Helmut Eller)
2176 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2177 * bug fix: compiler does not loop forever on an invalid type in
2179 * improvement: compilation of most CLOS applications is significantly
2181 * optimization: added a limited bytecode compiler for simple toplevel
2182 forms, speeding up compilation and FASL loading
2183 * bug fix: the statistical profiler now properly distinguishes anonymous
2186 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2187 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2188 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2189 into subclasses of the finalized class. Now user calls to
2190 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2191 system return before any subclasses are finalized.
2192 * minor incompatible change: The reader no longer ignores errors
2193 regarding non-existent packages in #+ and #- feature tests.
2194 * new feature: command line options --no-sysinit, --no-userinit to
2195 inhibit loading the corresponding init files
2196 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2197 for sending data through UDP sockets (thanks to François-René Rideau)
2198 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2199 error is signalled instead (thanks to François-René Rideau)
2200 * minor incompatible change: Error signalling behaviour of lexical
2201 operations violating package locks has changed slightly. Refer to
2202 documentation on package locks for details.
2203 * enhancement: EVAL can process IF-expressions without resorting to the
2205 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2206 constant-folded properly due to missing out-of-line functions.
2207 (reported by Mika Pihlajamäki)
2208 * bug fix: LISTEN sometimes returned T even in cases where no data was
2209 immediately available from the stream
2210 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2211 were reversed. (reported by Levente Mészáros)
2212 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2213 when given a vector displaced to an adjustable array. (reported
2215 * bug fix: derivation of float boundaries from numbers outside the
2216 appropriate float range (reported by John Wiseman)
2217 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2219 * bug fix: precomputing cache entries for generic functions with
2220 some subclasses of specializers as yet invalid does not attempt to
2221 fill a cache line with a negative offset. (reported by Levente
2223 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2224 allow condition class objects as arguments to DOCUMENTATION and
2225 (SETF DOCUMENTATION); only find and set documentation for
2226 structure names for the STRUCTURE doc-type. (suggested by Gary
2228 * improvements to the Win32/x86 port:
2229 ** (user-homedir-pathname) and default initialization file
2230 locations now know about the user's "Documents and Settings"
2231 directory (thanks to Yaroslav Kavenchuk)
2232 ** run-program is implemented (thanks to Mike Thomas)
2233 ** sockets support (thanks to Timothy Ritchey)
2234 ** better backtrace support (thanks to Alastair Bridgewater)
2235 ** sb-grovel supported
2236 ** asdf-install and sb-posix work somewhat
2237 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2238 * improvements to the Solaris/x86 port:
2239 ** works on Solaris 11/Solaris Express
2240 ** floating-point exception handling support
2241 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2242 * fixed some bugs revealed by Paul Dietz' test suite:
2243 ** REMOVE-METHOD returns its generic function argument even when
2244 the method is not one of the generic functions' methods.
2245 ** objects declared as MEMBER types can be admissible arguments to
2246 structure accessors.
2247 ** printing characters should simply be printed by the FORMAT ~:C
2249 ** compiler failure when compiling functions with hairy constant
2250 defaults for optional parameters.
2251 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2252 function, which is already optimized.
2254 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2255 * new platform: experimental support for SBCL x86/Darwin, including
2256 MacOS X 10.4.5 on Intel.
2257 * new feature: Unicode character names are now known to the system
2258 (through CHAR-NAME and NAME-CHAR).
2259 * new feature: the filesystem location of SBCL's core file is
2260 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2261 * minor incompatible change: the contrib modules SB-POSIX and
2262 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2263 this change is to make it easier to distribute
2264 location-independent binaries.
2265 * bug fix: as implied by AMOP, standardized classes no longer have
2266 slots named by external symbols of public packages. (reported by
2268 * optimization: calling functions via constant symbols -- as in
2269 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2270 via the function object as in (FUNCALL #'FOO).
2271 * optimization: on x86 and x86-64, the calling convention for the
2272 case of dealing with an unknown number of values has been altered
2273 to be friendlier to the prediction heuristics implemented,
2274 particularly with reference to CALL and RET pairing. (thanks to
2275 Alastair Bridgewater)
2276 * optimization: on x86, the code for access to thread-local symbol
2277 values and binding/unbinding of thread-local symbols is smaller.
2278 (thanks to Alastair Bridgewater)
2279 * enhancement: CONSTANTP is now able to determine constantness of
2280 more complex forms, including calls to constant-foldable standardized
2281 functions and some special forms beyond QUOTE.
2282 * fixed bug: occasional GC crashes on Solaris/x86
2283 * optimization: x86-64 supports stack allocation of results of simple
2284 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2285 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2286 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2287 (thanks to James Knight)
2288 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2289 by the standard (thanks to Stephen Compall)
2291 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2292 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2293 be used for bundling the runtime and the core file into one
2294 executable binary. This feature is not currently supported on all SBCL
2295 platforms. (thanks to James Bielman and NIIMI Satoshi)
2296 * new feature: a generational or ephemeral garbage collector is now
2297 the default on the PowerPC platform (both Linux and Darwin). The
2298 old Cheney (stop and copy) collector is a build-time option.
2299 (thanks to Cyrus Harmon, after Raymond Toy)
2300 * minor incompatible change: the method by which SBCL finds its
2301 contributed modules has changed; it no longer relies on symbolic
2302 links from an $SBCL_HOME/systems directory, but searches directly
2303 in the subdirectories of $SBCL_HOME.
2304 * enhancement: the dynamic heap size on the Linux/PPC platform is
2305 markedly larger, even using the older Cheney garbage collector.
2306 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2307 certain complicated string types. (reported by Gary King)
2308 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2309 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2310 * fixed bug: DOCUMENTATION on structures no longer signals an
2311 error if no structure type of the right name exists. (reported by
2313 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2314 applicable non-standard primary or :AROUND method on
2315 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2316 no longer cause unbound variable errors. (reported by Kevin Reid)
2317 * fixed bug: metacircle resolution in cases where methods have slots
2318 added before the slots from STANDARD-METHOD. (reported by Jean
2320 * fixed bug: the Power PC assembly code for calling into lisp
2321 sometimes computed its return address wrongly (depending on the
2322 15th bit of the address, fixed at link time). This used to
2323 manifest itself in a segmentation violation while building PCL.
2324 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2325 many others over the years)
2326 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2327 the stack pointer (treated as a signed integer) is negative.
2328 (thanks to Peter van Eynde)
2330 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2331 * new platform: experimental support for the Windows operating
2332 system has been added. (thanks to Alastair Bridgewater)
2333 * fixed several bugs in and robustified the PPC FFI (including
2334 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2335 * bug fix: allow non-simple string symbol names (reported by Paul
2337 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2339 * bug fix: saving a core corrupted callbacks on x86/x86-64
2340 * bug fix: closed a loophole in metacircularity detection and
2341 grounding in the PCL implementation of CLOS.
2342 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2343 (reported by tomppa on #lisp)
2344 * bug fix: clear the direction flag on Lisp -> C transitions, as
2345 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2346 (reported by Andrej Grozin and Hendrik Maryns)
2347 * optimization: major improvements to GC efficiency on GENCGC platforms
2348 * optimization: faster implementation of EQUAL
2349 * optimization: emit more efficient opcodes for some common
2350 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2351 * optimization: several other minor code-generation improvements on x86-64
2352 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2354 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2355 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2356 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2357 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2358 by ANSI as a generic function, and for consistency (SETF
2359 GENERIC-FUNCTION-NAME) is treated likewise.
2360 * fixed bug #233.b: make constraint propagation notice when a variable
2361 value is changed after it is referenced but before it is used
2362 * fixed bug #296: no more arbitrary behaviour from filenames with
2363 odd characters as --load arguments. (reported by Adam Warner)
2364 * fixed bug #390: :CHARACTER-SET pathname components now work as
2365 expected. (reported by Tim Daly Jr)
2366 * fixed bug #391: complicated :TYPE intersections in slot
2367 definitions no longer cause an error in PCL internals.
2368 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2369 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2370 returning the number of octets which would be written to the
2371 file-stream. (thanks to Robert J. Macomber)
2372 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2373 arguments to the internal stream functions. (thanks to David
2375 * bug fix: stack exhaustion is now handled on the x86/SunOS
2376 platform. (thanks to Daisuke Homma)
2377 * bug fix: more accurate ROOM results on GENCGC platforms
2378 * optimization: improved type inference for arithmetic-for
2379 index variables in LOOP
2380 * optimization: faster floating-point SQRT on x86-64
2381 * fixed some bugs revealed by Paul Dietz' test suite:
2382 ** DOCUMENTATION returns NIL instead of "" for method combinations
2383 that don't have a docstring
2385 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2386 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2387 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2388 therefore are not customizeable by user code (as seems to be at
2389 least permitted and maybe required by AMOP). As a consolation,
2390 however, the SBCL implementation of these functions now calls
2391 REINITIALIZE-INSTANCE as specified by AMOP.
2392 * bug fix: slot-definition documentation is propagated as per ANSI
2393 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2394 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2395 argument, as do eslotd initialization methods. (from Pascal
2396 Costanza's "Closer" project)
2397 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2398 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2400 * bug fix: it is now possible to have more than one subclass of
2401 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2402 (reported by Bruno Haible, Pascal Costanza and others)
2403 * bug fix: the dependent update protocol now works for generic
2404 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2405 and Pascal Costanza)
2406 * bug fix: condition-class instances corresponding to
2407 DEFINE-CONDITION forms are now created eagerly. (reported by
2408 Kalle Olavi Niemitalo on comp.lang.lisp)
2409 * bug fix: floating point printing is more accurate in some
2410 circumstances. (thanks to Simon Alexander)
2411 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2412 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2413 * bug fix: callbacks on OS X now preserve stack-alignment.
2414 (thanks to Cyrus Harmon)
2415 * enhancement: the x86-64 disassembler is much better at
2416 disassembling SSE instructions. (thanks to Lutz Euler)
2417 * enhancement: CHECK-TYPE on a variable now allows type-inference
2418 (thanks to Vincent Arkesteijn)
2419 * optimization: improved performance of EUC-JP external format.
2420 (thanks to NIIMI Satoshi)
2421 * optimization: performance improvements to IO on file streams of
2422 :ELEMENT-TYPE CHARACTER
2423 * optimization: much faster memory allocation on x86-64
2424 * optimization: faster garbage collections (latency and throughput)
2426 * optimization: faster bignum subtraction and division on x86 and x86-64
2427 (thanks to Lutz Euler)
2428 * optimization: more accurate type-inference for loops that use a
2429 floating point index variable or a negative step.
2431 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2432 * bug fix: add a workaround to SBCL looping infinitely at startup on
2433 Linux kernels with apparently buggy implementations of personality().
2434 (thanks to Svein Ove Aas)
2435 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2436 (thanks to David Lichteblau)
2437 * bug fix: local bindings shadow global symbol macros for
2438 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2439 * optimization: non-open coded uses of numeric comparison operators
2440 (e.g. >) no longer cons when called with more than one parameter
2441 on platforms supporting dynamic-extent allocation.
2442 * enhancement: saving cores with foreign code loaded is now supported
2443 on MIPS/Linux in addition to the previously supported platforms.
2444 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2445 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2446 * bug fix: division by zero in sb-sprof when no samples were collected
2447 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2448 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2449 (thanks to Alexander Kjeldaas)
2450 * new feature: ignoring the return values of destructive functions
2451 like NREVERSE signals a compile-time style-warning.
2452 (thanks to Kevin Reid)
2453 * new feature: the alignment of alien structure fields can be
2454 explicitly specified. (thanks to Cyrus Harmon)
2455 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2456 and dump core on SIGQUIT
2458 ** incompatible change: threads do not inherit values of specials
2459 from their parents (see manual)
2460 ** bug fix: threads stacks belonging to dead threads are freed by the
2461 next exiting thread, no need to gc to collect thread stacks anymore
2462 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2463 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2464 ** bug fix: dynamic variable and thread start related gc lossage
2465 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2467 * fixed some bugs revealed by Paul Dietz' test suite:
2468 ** SUBTYPEP is slightly more accurate on heinously complicated
2469 CONS types where some of the members have uncertain (in the
2470 NIL, NIL sense) type relationships to each other.
2472 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2473 no longer purified unless :PURIFY T is explicitly specified.
2474 ** Non-purified cores are significantly smaller than before
2476 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2477 * new feature: timers based on Zach Beane's excellent timer package
2478 * added support for the following external formats: koi8-u,
2479 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2480 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2481 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2482 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2483 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2484 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2485 * incompatible change: a threaded SBCL will no longer revert to
2486 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2487 * bug fix: interrupts are disabled until startup is complete; no
2488 more sigsegvs when receiving a signal to soon
2489 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2491 * bug fix: add a workaround for the memory randomization features in
2492 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2493 workaround will only be in effect on systems with the proc filesystem
2495 * bug fix: printing objects of type HASH-TABLE signals a
2496 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2498 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2499 have been running for over 50 days. (reported by Gilbert Baumann)
2500 * bug fix: the logic for getting names of functions gets less
2501 confused when confronded with alternate-metaclass
2502 funcallable-instances. (reported by Cyrus Harmon)
2503 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2504 consistent, even on internal alternate-metaclass objects.
2505 * bug fix: flush closure information collected by physical
2506 environment analysis prepass before the main pass. (bug reported
2508 * bug fix: compiler pack phase does not modify a hashtable, which is
2509 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2510 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2511 may be expanded. (reported by Alexander <malishev> on c.l.l)
2512 * bug fix: no more style-warnings when compiling code using LAST
2513 under high-SPEED low-SPACE settings. (reported by David Wallin
2515 * fixed some incompatibilities between SBCL's MOP and the MOP
2517 ** the METAOBJECT class is now implemented;
2518 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2519 STANDARD-OBJECT, as required;
2520 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2521 now compatible (as required by VALIDATE-SUPERCLASS); there
2522 remains a consistency requirement over the presence or absence
2523 of the FUNCTION class in the superclass list of finalized
2524 classes; see the manual for more details;
2525 ** the :AROUND method for COMPUTE-SLOTS on
2526 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2527 requested slot ordering.
2529 ** bug fix: parent thread now can be gc'ed even with a live
2531 ** bug fix: binding a special with PROGV to no value is not
2532 the same as that symbol not having been bound (thanks to
2534 ** bug fix: binding specials is thread safe (thanks to
2536 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2537 and SB-SPROF do not die with 'no handler for signal XX in
2538 interrupt_handle_now(..)' anymore
2539 ** bug fix: WITH-TIMEOUT works with multiple running threads
2540 * fixed some bugs revealed by Paul Dietz' test suite:
2541 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2542 the :method-class keyword argument.
2544 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2545 * new port: the Solaris operating system on x86 processors is now
2546 mostly supported, though some rough edges in the environment
2547 remain. (thanks to Daisuke Homma)
2548 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2549 space for its heap. (thanks to Thiemo Seufer)
2550 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2551 closures. (thanks to Thiemo Seufer)
2552 * minor incompatible change: eof selects abort in the debugger.
2553 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2554 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2556 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2557 deprecated, and will go away in a future revision of SBCL.
2558 * minor incompatible change: GC-ON and GC-OFF are no longer
2559 implemented with a counter, it does not matter how many times gc
2560 is switched on or off
2561 * bug fix: discriminating functions for generic function classes
2562 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2563 make invalid assumptions about method precedence order. (reported
2565 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2566 platforms. (thanks to Thiemo Seufer)
2567 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2568 * bug fix: correct pathname printing with printer escaping is on.
2569 (thanks to Kevin Reid)
2570 * bug fix: complex VOP definitions in "user-space" no longer trigger
2571 package locks. (reported by Zach Beane)
2572 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2573 for funcallable-instance functions, and is no different from
2575 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2576 characters in the current readtable. (reported by Nicholas Neuss)
2577 * bug fix: SUBTYPEP on various CONS types returns more a more
2578 accurate acknowledgment of its certainty.
2579 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2580 lists in some cases. This partially fixes bug 384.
2581 * flush all standard streams before prompting in the REPL and the
2583 * bug fix: signal handling and triggering gc do not conflict
2584 directly anymore, in particular a high frequency sb-sprof does
2585 not prevent gc from running
2586 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2587 approximation for timezone and DST information between the
2588 universal time epoch and the smallest negative 32-bit time_t.
2589 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2590 year 1899 so long as the encoded time is non-negative.
2591 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2592 the correct answer for non-constant rotate amounts when performing
2593 an inline 32-bit rotation.
2595 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2596 there is only one thread in the session
2597 ** bug fix: memory leak for streams created in one thread and
2598 written to in another
2599 ** bug fix: lockup when compiled with gcc4
2600 ** bug fix: race that allows the gc to be triggered when gc is
2602 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2603 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2605 ** bug fix: finished threads are gc'ed properly
2606 * fixed some bugs revealed by Paul Dietz' test suite:
2607 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2608 has arguments with a different set of applicable methods from
2609 the orignal arguments.
2610 ** The type error thrown by MAP now has a correct expected-type
2612 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2613 name a compiled function.
2614 ** Three MISC tests where a large bignum was improperly coerced to
2615 a float that couldn't represent that bignum during type
2616 derivation were fixed.
2617 ** SUBTYPEP can now handle types involving the negation of a
2618 list-form FUNCTION type.
2619 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2620 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2621 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2623 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2624 * New feature: Experimental support for bivalent streams: streams
2625 opened with :element-type :default now allow character and binary
2626 (unsigned-byte 8) I/O
2627 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2628 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2630 * bug fix: no more highly sporadic "couldn't check whether ~S is
2631 readable" when reading a stream and an interrupt hits in the middle
2632 of a select system call
2633 * compiler better recognizes complex arrays (reported by Eduardo
2635 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2636 for variables on SBCL built with linkage-tables. (reported by Luis
2638 * various error reporting improvements.
2639 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2640 (Thanks to Thiemo Seufer)
2641 * bug fix: nested reader invokations work correctly
2642 * bug fix: it is possible to have simultaneous references to foreign
2643 code and foreign data with the same name.
2645 ** added x86-64 support
2646 ** incompatible change: the threading api now works with thread
2647 objects instead of thread ids
2648 ** bug fix: threads are protected from signals and interruption when
2649 starting up or going down
2650 ** bug fix: a race where an exiting thread could lose its stack to gc
2651 ** bug fix: don't halt on infinite error in threads if possible
2652 ** fixed numerous gc deadlocks introduced in the pthread merge
2653 ** bug fix: fixed thread safety issues in read and print
2654 ** bug fix: debugger doesn't hang on session lock if interrupted at
2655 an inappropriate moment
2656 ** bug fix: run-program is now thread safe(r)
2657 ** bug fix: inner with-recursive-lock no longer releases the mutex
2658 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2659 * fixed some bugs revealed by Paul Dietz' test suite:
2660 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2661 EXPECTED-TYPE slots filled.
2662 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2664 ** MAKE-CONDITION accepts classes as type-designators.
2665 ** COMPILE may never return NIL.
2666 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2667 range before calling Unix time functions
2669 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2670 * numerous signal handling fixes to increase stability
2671 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2672 * minor incompatible change: we now correctly canonize default
2673 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2674 as per the MOP, rather than the historical (INITARG INITFUNCTION
2675 INITFORM). (reported by Bruno Haible)
2676 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2677 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2678 for more information.
2679 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2680 pathname is a directory pathname.
2681 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2682 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2684 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2685 :METACLASS argument in addition to a class name. (reported by
2686 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2687 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2688 (reported by Bruno Haible; patch from Gerd Moellmann)
2689 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2691 * bug fix: more cleanups to the floating point exception handling on
2692 x86-64 (thanks to James Knight)
2693 * bug fix: the compiler does not try to constant fold calls of
2694 COERCE and BIT-* functions when they return freshly constructed
2695 objects. (reported by Nikodemus Siivola and Paul Dietz)
2696 * optimization: improved the MIPS versions of generic (in the
2697 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2698 * optimization: direct conversion of (unsigned-byte 32) to floats on
2699 the PowerPC platform.
2700 * optimization: structure instances with raw slots now use less
2701 memory, and probably show better memory locality. (thanks to
2703 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2704 are treated as requests for stack allocation on the x86-64,
2705 Alpha-32, PPC and SPARC platforms.
2706 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2707 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2708 (thanks to Tony Martinez)
2710 ** gcing a dead thread can no longer lead to lockups
2711 ** threads block signals until they are set up properly
2712 ** errno is no longer shared by threads
2713 ** interrupt-thread restores the eflags register on x86
2714 ** fixed some lockups due to gc/thread interaction
2715 * fixed some bugs revealed by Paul Dietz' test suite:
2716 ** invalid dotted lists no longer raise a read error when
2717 *READ-SUPPRESS* is T
2718 ** signal an error if a symbol that names a declaration is used
2719 as the name of a type, or vice versa
2720 ** allow using the (declare (typespec var*)) abbreviation for
2721 (declare (type typespec var*)) with all type specifiers
2722 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2723 ** always return NIL from PPRINT-POP when OBJECT is NIL
2724 ** don't signal errors when pretty-printing malformed LABELS,
2725 FLET or MACROLET forms
2726 ** declarations in a DOLIST body are also in scope for the
2728 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2730 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2733 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2734 * fixed cross-compiler leakages that prevented building a 32-bit
2735 target with a 64-bit host compiler.
2736 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2737 opened with :IF-EXISTS :OVERWRITE.
2738 * fixed bug 281: error for an invalid qualifier in a short-form method
2739 combination method is not signalled until the faulty method is called.
2740 * bug fix: iteration variable type inferrer failed to deal with open
2741 intervals. (reported by Alan Shields)
2742 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2743 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2744 or more runtime options were provided to the sbcl binary.
2745 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2746 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2747 * optimization: there's now a fast-path for fixnum arguments in the
2748 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2749 * optimization: the code generated on x86-64 is more compact thanks
2750 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2751 * bug fix: floating-point exception handling now partly works on
2752 x86-64. (Thanks to James Knight)
2753 * improvement to the MIPS backend from Thiemo Seufer: C-style
2754 64-bit long long arguments and return values to alien functions
2756 * fixed some bugs revealed by Paul Dietz' test suite:
2757 ** the type-error signalled from WARN has a filled-in DATUM slot.
2758 ** the type-error required when a stream is not associated with
2759 a file has the stream as its datum.
2760 ** type-errors on single-floats on x86-64 no longer have
2761 :INVALID-OBJECT as the datum
2762 ** the type-errors signalled for invalid function names now have
2763 a correct expected type
2764 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2765 for structures defined with a :TYPE. Documentation strings for
2766 typed structures are no longer immediately discarded
2767 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2768 broadcast streams and synonym streams. FILE-LENGTH now also works
2769 on broadcast streams.
2771 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2772 * incompatible change: the --noprogrammer option, deprecated since
2773 version 0.7.5, has been removed. Please use the equivalent
2774 --disable-debugger option instead.
2775 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2777 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2778 inoperational for a while now) has been completely removed.
2779 * null lexical environments are now printed as #<NULL-LEXENV>,
2780 significantly reducing the amount of clutter in typical backtraces.
2781 * documentation on weak pointers, finalization, and after GC hooks
2782 has been added to the manual.
2783 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2784 as other specialized array types, is much faster. SUBSEQ and
2785 COPY-SEQ on such arrays have also been sped up.
2786 * optimization: EQL is now more efficient when at least other argument
2787 is known to be of type (OR FIXNUM (NOT NUMBER)).
2788 * fixed bug: the runtime is now less vulnerable to changes in the
2789 size of the SBCL object on OS X, and virtual memory is reserved for
2790 all spaces that need to be at a fixed address.
2791 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2792 * fixed bug: finalizers and after GC hooks that cause consing are now
2794 * fixed bug: compiler error messages and summaries are now printed to
2795 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2796 * fixed inference of the upper bound of an iteration variable.
2797 (reported by Rajat Datta).
2798 * fixed bug 211e: calling local functions with duplicated constant
2799 keyword argument no longer causes a bogus style warning about an
2801 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2802 ftype declaration to be disregarded. (reported by Dave Roberts)
2803 * fixed bug 373: caused by erronous compilation of references to alien
2804 variables in the runtime on ppc/darwin.
2805 * fixed bug 376: CONJUGATE type deriver.
2806 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2807 (reported by Baughn on #lisp)
2808 * a cross-compiler bug on non-x86 platforms has been identified and
2809 fixed. (thanks to Bruno Haible)
2810 * improvements to the MIPS runtime code for increased stability.
2811 (thanks to Thiemo Seufer)
2812 * increased the maximimum compact environment size to allow
2813 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2814 * partial workaround for bug 135: don't name the function we're
2815 calling for hairy cases of EVAL, so as not to accumulate one environment
2816 entry per call to EVAL. (reported by Kevin Reid)
2817 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2818 * optimization: type testing for non-vector arrays should be faster.
2819 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2821 * bug fix: setting 31st element of a bit vector to zero did not work
2823 * bug fix: redefining a class definition which failed due to a
2824 previous accessor / function clash now works (but see BUGS entry
2825 #380 for more problems in this area). (thanks to Zach Beane)
2826 * the long form of DEFINE-METHOD-COMBINATION disables method group
2827 checking when given a single method group with pattern *. (thanks
2829 * on x86 compiler supports stack allocation of results of simple
2830 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2831 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2832 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2833 * fixed some bugs related to Unicode integration:
2834 ** the restarts for recovering from input and output encoding
2835 errors only appear when there is in fact such an error to
2837 * fixed some bugs revealed by Paul Dietz' test suite:
2838 ** MISC.549 and similar: late transformation of unsafe type
2839 assertions into derived types caused unexpected code
2841 ** SCALE-FLOAT type deriver is less wrong.
2842 ** type derivers for EXP, LOG and similar functions compute result
2843 types for complex arguments better.
2844 ** (MISC.563) CONJUGATE type deriver works for very restricted
2846 ** out-of-line type testers for character strings are available.
2847 ** EQUAL compiler transform understands specialness of objects
2849 ** accessing double-floats stored on the stack now works on x86-64.
2850 ** debugger internals could sometimes create invalid lispobjs,
2851 resulting in GC crashes.
2852 ** MISC.548: type check weakening can convert required type into
2854 ** initialization forms for bindings are not in scope of free special
2857 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2858 * incompatible change: thread support for non-NPTL systems has
2859 been removed - locking is buggy and unreliable. A threaded
2860 SBCL build will now warn at startup and refuse to create
2861 new threads, unless futex support is detected in the kernel
2862 * incompatible change: the top level REPL now has only an ABORT
2863 restart associated with it, not TOPLEVEL and ABORT as it used to.
2864 TOP and TOPLEVEL are now available as debugger commands for
2865 returning to the top level.
2866 * incompatible change: forms evaluated in the REPL now use the
2867 global optimization policy.
2868 * incompatible change: user- and system-initialization files are
2869 no longer processed with LOAD, but by READ and EVAL; hence the
2870 global optimization policy, startup package, readtable, etc,
2872 * The .fasl file format number has been incremented because of
2873 various incompatible changes.
2874 * internal entry point details and argument counts no longer appear
2875 in backtraces unless explicitly requested by setting
2876 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2877 * built-in and standard functions no longer have names like "top
2878 level local call to FOO".
2879 * fixed bug 32: functions defined in non-null lexical environments
2880 now have more legible printed representation
2881 * fixed bug 33: functions defined in non-null lexical environemnts
2882 are now more amenable to inspection by INSPECT.
2883 * workaround for bug 354: XEPs no longer appear in backtraces unless
2884 explicitly requested.
2885 * fixed bug: receiving the signal which results from attempting to
2886 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2887 SIGBUS on other *BSDs) on architectures where the C stack is also
2888 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2889 to debugger confusion or wild instability. (reported by Cheuksan
2891 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2892 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2893 (reported by Lutz Euler)
2894 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2895 compiled code. (reported by Paul Dietz)
2896 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2897 specialized parameter to a method to something that is not TYPEP
2898 the specializer is now possible.
2899 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2900 face of package deletion.
2901 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2902 pathname. (reported by David Tolpin on c.l.l)
2903 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2904 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2905 STRING-STREAM and FILE-STREAM, respectively.
2906 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2907 than previously; in addition, its test suite is now run on build.
2908 (thanks to Luke Gorrie)
2909 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2910 * optimization: added a immediate representation for single-floats
2912 * fixed some bugs revealed by Paul Dietz' test suite:
2913 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2914 ** attempting to create a package with a colliding nickname causes
2915 correctable errors to be signalled.
2916 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2917 ** several x86-64 backend bugs related to sign-extension of immediate
2920 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2921 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2922 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2924 * fixed loading of multiply forward-referenced layouts.
2925 (thanks to Cheuksan Wang)
2926 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2927 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2928 (see COMPILE-FILE documentation for details of :PRINT option)
2929 * fixed bugs 19 and 317: fixed-format floating point printing is
2930 more accurate. This also fixes a bug reported by Adam Warner
2931 related to the ~@F format directive.
2932 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2934 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2935 dispatch table if the from-char is a dispatch macro character.
2936 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2937 by the wordsize no longer ignore the last word. (reported by Lutz
2939 * fixed bug in type checking of dynamic-extent variables. (reported
2941 * optimization: sequence traversal functions use their freedom to
2942 coerce function designators to functions.
2943 * optimization: code with many calls to CLOS methods specialized on
2944 CLOS classes has had redundant type checks removed.
2945 * optimization: added declarations to speed up operations that access
2946 the internal character database (for example STRING-UPCASE)
2947 * optimization: comparison operations between floats and sufficiently small
2948 fixnums no longer create extra rationals
2949 * fixed some bugs related to Unicode integration:
2950 ** portions of multibyte characters at the end of buffers for
2951 character-based file input are correctly transferred to the
2952 start of the buffer at the next read.
2953 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2954 passing it through to OPEN.
2955 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2956 argument given to internal calls to OPEN.
2957 ** the built-in comment readers (introduced by character sequences
2958 ";" and "#|") are more forgiving to encoding errors; they will
2959 STYLE-WARN and then attempt to resync the stream at a character
2960 boundary. (thanks to Teemu Kalvas)
2961 * fixed some bugs in the x86-64 port:
2962 ** Negative short int return values from c-calls are sign-extended
2964 ** The stack is aligned to 16-bytes for c-calls, as required by
2965 the ABI. (thanks to Cheuksan Wang)
2966 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2967 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2968 for enums. (thanks to Vincent Arkesteijn)
2969 ** Multiple small optimizations and bugfixes for floating point
2971 * fixed some bugs revealed by Paul Dietz' test suite:
2972 ** Space, Tab, Linefeed, Return and Page have the invalid
2973 secondary constituent character trait.
2974 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2976 ** WITH-INPUT-FROM-STRING should only update the index place on
2978 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2979 works more reliably.
2980 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2981 with one-dimensional arrays with fill pointers.
2982 ** TYPE-OF failed on a complex with an integer realpart and a
2984 ** compiler failure during type inference for the code of form
2985 (IF (EQL X (THE ...)) ...) (MISC.535).
2987 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2988 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2989 platform. The port supports 61-bit fixnums, large memory spaces
2990 and reloading shared object files.
2991 * enhancement: saving cores with foreign code loaded is now
2992 supported on ppc/Darwin in addition to the previously supported
2994 * enhancement: the statistical profiler now walks deeper into the
2995 call stack for more meaningful call-graphs and accrued time
2996 reports (x86/x86-64 only). It also now reports time spent in
2998 * enhancement: it is now possible to trace most individual methods
2999 of a generic function in addition to tracing the generic function
3001 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3003 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3004 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3005 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3006 produces an error. (thanks to Vincent Arkesteijn)
3007 * bug fix: NAMESTRING on pathnames with :WILD components in their
3008 directories works correctly. (thanks to Artem V. Andreev)
3009 * fixed bug 125: compiler preserves identity of closures. (reported
3011 * bug fixed: functions with &REST arguments sometimes failed with
3012 "Undefined function" when compiled with (DEBUG 3). (reported by
3014 * bug fix: overflow during compiling of setting element of a bit
3015 vector with constant index and value. (reported by Timmy Douglas)
3016 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3017 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3018 * on x86 compiler partially supports stack allocation of dynamic-extent
3020 * GO and RETURN-FROM do not check the extent of their exit points
3021 when compiled with SAFETY 0.
3022 * fixed some bugs related to Unicode integration:
3023 ** encoding and decoding errors are now much more robustly
3024 handled; it should now be possible to recover even from invalid
3025 input or output to the terminal. (thanks to Teemu Kalvas)
3026 ** provided a first cut at implementing STRING-TO-OCTETS and
3027 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3028 ** altered the SB-MD5 contributed module slightly, changing the
3029 interface just enough for it to be supportable for builds where
3030 lisp characters are not eight bits.
3031 * fixed some bugs revealed by Paul Dietz' test suite:
3032 ** the FORMATTER-generated functions for ~V[ conditionals require
3033 the correct number of arguments.
3034 ** READ-FROM-STRING returns the mandated second value when applied
3035 to displaced strings.
3036 ** the #\Rubout and #\Backspace characters are treated as invalid
3037 constituent characters by the tokenizer.
3039 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3040 * new feature: reloading changed shared object files with
3041 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3042 * new feature: references to foreign variables and functions
3043 can now be compiled and loaded before the corresponding shared
3044 object file is loaded, as long as the foreign definitions are
3045 available at runtime.
3046 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3047 supported. (thanks to Dan Debertin)
3048 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3049 just keywords. (thanks to Vincent Arkesteijn)
3050 * fixed bug #331: structure-class instances corresponding to
3051 DEFSTRUCT forms are now created eagerly.
3052 * fixed bug #345: backtraces from calls to undefined functions work
3053 on x86 as well. Related bug #61 is now also partially fixed on x86
3054 (backtraces from throws to unknown catch tags.)
3055 * bug fix: lambda-list parsing is now stricter vrt. order and number
3056 of lambda-list keywords.
3057 * bug fix: as specified by AMOP, an error is signalled if a
3058 class-option appears multiple times in a DEFCLASS form. (reported
3060 * bug fix: RANDOM can be compiled when the compiler derives the type
3061 of its numeric argument as a disjoint set of small integers.
3062 (reported by Paul Dietz)
3063 * bug fix: starting a core saved with shared objects loaded when
3064 those objects are not available no longer causes threaded SBCL to
3065 hang. (reported by Sean Ross)
3066 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3068 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3069 argument, which must always be NIL. (reported by Kalle Niemitalo)
3070 * bug fix: printing 1.0d+23 no longer results in an error.
3071 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3072 * bug fix: structure slot setters preserve evaluation order. (thanks
3074 * fixed some bugs related to Unicode integration:
3075 ** RUN-PROGRAM can allow its child to take input from a Lisp
3076 stream. (reported by Stefan Scholl)
3077 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3078 locales. (reported by Ken Causey)
3079 * fixed some bugs revealed by Paul Dietz' test suite:
3080 ** INCF, DECF and REMF evaluate their place form as specified in
3082 ** FORMATTER expands ~{ ~} iteration directives with V or #
3083 parameters correctly.
3084 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3085 consequent uses no arguments correctly.
3086 ** the system has a partial understanding of the (COMPLEX RATIO)
3088 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3091 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3092 * new feature: a build-time option (controlled by the :SB-UNICODE
3093 keyword feature, enabled by default) for building the system with
3094 support for the entire 21-bit character space defined by the
3096 * new feature: the system now has rudimentary external-format
3097 support; the primary user-visible change at this time is that
3098 characters with the high bit set (such as lower-case-e-acute) will
3099 print correctly to a terminal in a UTF-8 environment.
3100 * minor incompatible change: BASE-CHAR no longer names a class;
3101 however, CHARACTER continues to do so, as required by ANSI.
3102 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3103 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3104 has been moved to the SB-EXT package (temporarily re-exported from
3106 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3107 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3109 * fixed bug #351: better error-handlind and reporting for malformed
3111 * fixed bug #350: bignum-printing is now more memory-efficient,
3112 allowing printing of very large bignums, eg. (expt 2 10000000).
3113 (reported by Bruno Haible)
3114 * fixed bug #302: better primitive-type selection for intersection
3116 * fixed bug #308: non-graphic characters now all have names, as
3117 required. (reported by Bruno Haible)
3118 * bug fix: redefining a class with different superclasses now correctly
3119 removes it from the direct-subclasses of its previous superclasses.
3120 (reported by David Morse)
3121 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3122 new value now works. (reported by Bruno Haible)
3123 * bug fix: correct canonicalization of multiple non-standard slot
3124 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3125 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3126 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3127 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3128 now exists, an signals an error.
3129 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3130 during macroexpansion for non-iteration variables as well. (reported
3131 by Bruno Haible for CMUCL)
3132 * bug fix: Cyclic structures and unprintable objects in compiler
3133 messages no longer cause errors. (reported by Bruno Haible)
3134 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3135 and READ-FROM-STRING all now return a primary value of NIL if
3136 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3137 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3138 (reported by Bruno Haible for CMUCL)
3139 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3140 do not designate a condition. (reported by Bruno Haible for
3142 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3143 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3144 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3145 permitting resolution in favour of any of the conflicting symbols.
3146 (reported by Bruno Haible for CMUCL)
3147 * bug fix: EQUAL compiler optimizations is less aggressive on
3148 strings which can potentially compare true despite having distinct
3149 specialized array element types.
3150 * bug fix: unit enumerations can be defined without dividing by
3151 zero. (thanks to Vincent Arkesteijn)
3152 * FORMAT compile-time argument count checking has been enhanced.
3153 (report from Bruno Haible for CMUCL)
3154 * a partial workaround for the bug 262: the compiler does not try to
3155 inline-expand a local function doing RETURN-FROM from a deleted
3156 BLOCK. (thanks to Peter Denno for the bug report and to David
3157 Wragg for the simple test case)
3158 * fixed some bugs revealed by Paul Dietz' test suite:
3159 ** RENAME-PACKAGE allows all package designators as new package
3161 ** constraint propagation and lambda variable substitution are
3162 more cautious in dealing with partially deleted code.
3163 ** compiler sometimes lost reoptimization passes.
3164 ** CERROR, given a condition as condition designator, passes its
3165 remaining arguments to the continue format control without
3167 ** Case-altering FORMAT directives work correctly on non-ASCII
3169 ** The REAL type specifier handles bounds outside the floating
3170 point ranges without signalling FLOATING-POINT-OVERFLOW.
3171 ** Functions with IR1-transformations can create intercomponent
3172 references to global functions.
3173 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3175 ** FORMAT ~R treats a nil value for its first parameter correctly.
3177 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3178 * enhancement: saving cores with foreign code loaded is now
3179 supported on x86/NetBSD and sparc/Linux in addition to the previously
3180 supported platforms.
3181 * bug fix: on some platforms repeated installations caused multiple
3182 copies of HTML documentation to be installed -- should not happen
3183 any more. (reported by Stefan Scholl)
3184 * bug fix: parsing self-recursive alien record types multiple times
3185 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3186 original patch by Helmut Eller for CMUCL)
3187 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3188 (thanks to Richard Kreuter)
3189 * bug fix: defining classes whose accessors are methods on existing
3190 generic functions in other (locked) packages no longer signals
3191 bogus package lock violations. (reported by François-René Rideau)
3192 * bug fix: special variables as DEFMETHOD parameters no longer have
3193 associated bogus type declarations. (reported by David Wragg and
3195 * bug fix: read-write consistency on streams of element-type
3196 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3197 * bug fix: redefiniton of the only method of a generic function with
3198 no DEFGENERIC no longer emits a full WARNING. In addition,
3199 redefinition of generic functions with no DEFGENERIC to an
3200 incompatible lambda list now signals an error. (thanks to Zach
3202 * bug fix: DEFGENERIC now works even when there's a function of the
3203 same name in an enclosing lexical environment. (thanks to Zach
3205 * fixed compiler failure, caused by instrumenting code during
3206 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3207 * optimization: added loop analysis and improved register allocation
3208 * fixed some bugs revealed by Paul Dietz' test suite:
3209 ** POSITION on displaced vectors with non-zero displacement
3210 returns the right answer.
3211 ** (SIMPLE-STRING) is a valid type specifier for sequence
3213 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3215 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3216 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3218 ** The justification version of the FORMAT ~< directive treats
3219 non-zero minpad parameter correctly.
3221 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3222 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3223 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3224 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3225 the supported interface.
3226 * new feature: Single-stepping of code compiled with DEBUG 2 or
3227 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3228 * new feature: saving cores with foreign code loaded is now
3229 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3230 Timothy Moore's work for CMUCL)
3231 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3232 parameters to * instead of NIL if no initform is supplied.
3233 (reported by Johan Bockgaard)
3234 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3235 correctly when FUNCALL appears as the car of the form. Note:
3236 despite this FUNCALL forms are not currently subject to
3237 compiler-macro expansion. (port of Raymond Toy's fix for the
3238 same from CMUCL, reported by Johan Bockgaard)
3239 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3240 (thanks for Teemu Kalvas)
3241 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3242 case instead of terminating the iteration (thanks for Julian
3243 Squires, Sean Champ and Raymond Toy)
3244 * bug fix: incorrect expansion of defgeneric that caused a style
3245 warning. (thanks for Zach Beane)
3246 * bug fix: slot accessor effective method computation works properly
3247 for classes with multiple non-standard applicable methods on
3248 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3249 * on x86 compiler supports stack allocation of results of LIST and
3250 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3251 CMUCL implementation by Gerd Moellmann)
3252 * fixed some bugs revealed by Paul Dietz' test suite:
3253 ** FORMAT strings with both the ~<~:;~> form of the justification
3254 directive and pretty-printing directives cause an error.
3256 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3257 * incompatible change: the internal functions
3258 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3259 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3260 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3261 instead of the old functions.
3262 * new feature: on platforms where "dladdr" is available foreign
3263 function names now appear in backtraces. (based on Helmut Eller's
3265 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3266 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3268 * documentation: ASDF manual is now distributed with SBCL.
3269 * bug fix: SBCL can now load its contributed modules with REQUIRE
3270 even if the system-provided entries have been removed from
3271 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3273 * bug fix: backtraces involving undefined functions or assembly
3274 routines are more informative. (thanks to Brian Downing)
3275 * bug fix: mutually referent alien structures now work correctly.
3276 (reported by Rick Taube)
3277 * bug fix: structures defined by WITH-ALIEN can be referred to
3278 within other definitions in the same WITH-ALIEN.
3279 * bug fix: division operators (MOD, TRUNCATE and the like) with
3280 constant zero divisors and integer dividends no longer generate
3282 * bug fix: provide default methods for INPUT-STREAM-P and
3283 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3284 * bug fix: improve the detection and resolution of MOP metacycles
3285 (where effective method computation depends on the generic function
3286 having its effective method computed). (reported by Bruno Haible)
3287 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3288 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3289 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3290 * bug fix: pathnames with relative directory components can be
3291 represented relative to default pathnames.
3292 * optimization: in taking the GCD of bignums, reduce the two bignums
3293 to approximately the same size (using Euclid's algorithm) before
3294 applying the more sophisticated binary GCD. (thanks to Juho
3296 * optimization: COUNT on bitvectors now operates word-at-a-time.
3297 * optimization: ASH with a positive, but not necessarily constant,
3298 (leftwards) shift, when in a modular context, is compiled to a
3300 * fixed some bugs revealed by Paul Dietz' test suite:
3301 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3302 if the corresponding argument is NIL.
3303 ** FORMAT directives accepting a minpad parameter treat negative
3305 ** literal commas as character parameters to FORMAT directives are
3307 ** literal spaces directly after ~<Newline> directives within a
3308 format-logical-block (~:< ~@:>) do not induce :FILL-style
3309 conditional newlines.
3310 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3311 as specified: it no longer includes conditional newlines).
3312 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3314 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3315 :PER-LINE-PREFIX argument does not evaluate to a string.
3317 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3318 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3319 the manual for details; for now, package locks can be disabled by
3320 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3321 if no major problems are found then it is likely that they will be
3322 compiled in unconditionally.
3323 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3324 unsupported operators on all platforms. To load a shared library
3325 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3326 object file, link it into a shared library outside of SBCL and
3327 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3329 * bug workaround: ROOM T and the GC were not working together
3330 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3331 reporting facility aren't preserved. That reporting has been
3332 disabled, so now until and unless someone figures out how to make it
3333 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3334 * minor incompatible change: as threatened around sbcl-0.8.0, the
3335 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3336 The symbols are also exported from SB-PCL for backwards
3337 compatibility, but more so than before SB-PCL should be treated as
3338 an implementation-internal package.
3339 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3341 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3342 It is known as of this release not to work on the Alpha, however.
3343 * fixed bug #167: errors signalled due to illegal syntax in method
3344 bodies are now more legible.
3345 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3346 designators and can hence be used with TYPEP.
3347 * fixed bug #333: CHECK-TYPE now ensures that the type error
3348 signalled, if any, has the right object to be accessed by
3349 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3350 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3351 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3353 * fixed bug #334: programmatic addition of slots using specialized
3354 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3355 and :ALLOCATION :CLASS slots.
3356 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3357 float exponents. (rereported by Peter Seibel)
3358 * fixed a bug: #\Space (and other whitespace characters) are no
3359 longer considered to be macro characters in standard syntax by
3360 GET-MACRO-CHARACTER.
3361 * fixed bug: initialization of condition class metaobjects no longer
3362 causes an instance of the condition to be created. (reported by
3364 * fixed bug: it is now possible to have slots such that
3365 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3366 description is neither :INSTANCE nor :CLASS.
3367 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3368 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3369 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3370 non-standard SLOT-DEFINITION-ALLOCATION values.
3371 * fixed bugs: various race conditions handling exiting threads.
3372 CL-PPCRE's thread torture test now passes.
3373 * fixed arguably-a-bug: GC time proportional to number of threads in
3374 system even when most of them are idle
3375 * optimization: improved performance of BIT and SBIT on bit-vectors.
3376 * .fasl file incompatibility: The fasl file version number has
3377 been incremented because of changes associated with package locks.
3379 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3380 * minor incompatible change: the system no longer provides
3381 optimization hints (conditions which are TYPEP
3382 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3383 mode; these hints are still emitted when higher SPEED optimization
3385 * new contrib module: a sampling profiler (profiling by statistical
3386 sampling, rather than by instrumenting functions) is available as
3387 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3388 * the behaviour of the standard function ED is now customizeable by
3389 third parties through a hook variable: see ED's documentation
3390 string for information on the protocol.
3391 * the compiler no longer emits efficiency notes for (FUNCALL X)
3392 when the type of X is uncertain under default optimization
3394 * fixed bug 276: mutating a binding of a specialized parameter to a
3395 method to something that is not TYPEP the specializer is now
3397 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3398 exhibit the required behaviour on the x86 platform. (thanks to
3399 Peter van Eynde, Eric Marsden and Bruno Haible)
3400 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3401 even for difficult arguments. (reported by Peter Graves)
3402 * fixed bug 141a: the backquote printer now descends quoted
3404 * fixed another bug in backquote printing: no more destructive
3405 modification of the form's list structure. (reported by Brian
3407 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3408 move between its address being taken and the call to
3409 interrupt_thread, fixing a crashing race condition.
3410 * the SB-POSIX contrib implementation has been adjusted so that it
3411 no longer exhibits ridiculously poor performance when constructing
3412 instances corresponding to C structs.
3414 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3415 * minor incompatible change: the sb-grovel contrib now treats C
3416 structures as alien (in the sense of SB-ALIEN) objects rather than
3417 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3418 has implications for memory management of client code
3419 (sb-grovel-returned objects must now be manually managed) and for
3420 type safety (alien objects now have full types).
3421 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3422 used to control emission of compiler diagnostics, rather than the
3423 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3424 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3425 quality should be considered deprecated.
3426 * install.sh now installs the user manual as well
3427 * (not quite a new documentable feature, but worth considering in
3428 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3429 beginnings of a semantically meaningful condition hierarchy is
3430 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3432 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3433 designator as the defaults argument.
3434 * fixed bug: Displaced arrays whose displaced-to array has become
3435 too small now cause ARRAY-DIMENSION to signal an error, providing
3436 for safer bounds-checking. (reported by Bruno Haible)
3437 * fixed bug: DEFCLASS slot definitions with identical :READER and
3438 :WRITER names now signal a reasonable error. (reported by Thomas
3440 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3442 * fixed bug: Invalid slot specification errors now print correctly.
3443 (thanks to Zach Beane)
3444 * fixed bug 320: Shared to local slot value transfers in class
3445 redefinitions now happen corrently from superclasses as
3446 well. (reported by Bruno Haible)
3447 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3449 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3450 improper lists correctly. (reported by Bruno Haible)
3451 * fixed bug 313: source-transform for <fun-name> was erroneously
3452 applied to a call of a value of a variable with name <fun-name>.
3453 (reported by Antonio Menezes Leitao)
3454 * fixed bug 307: The obsolete instance protocol ensures that
3455 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3456 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3457 remove dead unknown-values globs from the middle of the stack.
3458 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3459 easier to resume long computations after using *BREAK-ON-SIGNALS*
3460 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3461 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3462 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3463 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3464 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3465 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3467 * fixed a (fairly theoretical) bug in string printing: if
3468 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3469 does not have array-element-type equal to the most general string
3471 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3472 function name. (thanks to Nikodemus Siivola)
3473 * fixed bug: compile-time format string checker failed on
3474 non-closed ~{. (reported by Thomas F Burdick)
3475 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3476 don't warn on legal loop code involving more than one aggregate
3477 boolean. (thanks to Nikodemus Siivola)
3478 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3479 in keyword position to MAKE-PACKAGE was not being reported as
3481 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3482 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3484 * fixed bugs 280 and 312: the checking for multiple definitions in a
3485 file is less likely to become confused by uses of inline
3487 * fixed bug: the #S reader macro performs the keyword coercion
3488 specified for slot names. (reported by Kalle Niemitalo)
3489 * fixed bug: lambda lists may contain symbols whose names start with
3490 & but are not lambda-list-keywords; their occurrence triggers a
3492 * fixed bug 321: define-method-combination argument lambda lists do
3493 not cause invalid code to be generated when &optional or &aux
3494 variables have default values. (reported by Bruno Haible)
3495 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3496 have CLOS classes; this appears also to have fixed reported
3497 instability in stack exhaustion detection.
3498 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3499 MUFFLE-WARNING when no associated restart is present is now
3501 * optimization: rearranged the expansion of various defining macros
3502 so that each expands into only one top-level form in a
3503 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3505 * optimization: used a previously little-used slot in symbols to
3506 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3508 * fixed some bugs revealed by Paul Dietz' test suite:
3509 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3511 ** Fixed an optimization bug related to inheritance of initforms
3512 from local to shared slots.
3513 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3514 ** CAST optimizer forgot to flush argument derived type.
3515 ** print/read consistency on floats is now orders of magnitude
3516 more likely. (thanks also to Bruno Haible for a similar report
3518 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3519 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3520 for objects of type REAL. Make it so.
3521 ** SXHASH is specified (infelicitously) to respect similarity,
3522 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3523 it so. (thanks to Markus Ziegler)
3524 ** on the Alpha, the compiler succeeds in compiling functions
3525 returning a known number of arguments greater than 63.
3526 ** fixed handling of invalid NIL arguments in keyword position
3528 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3530 ** provided a readably-printable representation for RANDOM-STATE
3532 ** ensured that pathnames, where they have a namestring, always
3533 print using #P"..." syntax.
3535 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3536 * Support for the forthcoming 2.0 version of the NetBSD kernel
3537 running on x86 hardware has been added. (thanks to Perry
3538 E. Metzger most immediately, and others for their past work)
3539 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3540 current release version; SBCL's OpenBSD support had been broken
3541 since about the time of OpenBSD's switch to ELF binary format.)
3542 * [placeholder for DX summary]
3543 ** user code with &REST lists declared dynamic-extent, under high
3544 speed or space and low safety and debug optimization policy.
3545 * The manual has been converted to Texinfo format and the debugger
3546 chapter from the cmucl manual has been added.
3547 * A facility has been added to extract documentation strings from
3548 sbcl and store them as Texinfo-formatted snippets for inclusion in
3549 the manual (via Texinfo's @include directive)
3550 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3551 the test case to Dave Roberts)
3552 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3553 pointers. (reported by Sean Ross)
3554 * bug fix: PROFILE output is printed nicely even for large numerical
3555 values. (thanks to Zach Beane)
3556 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3557 greater than 32 handle EOF correctly.
3558 * bug fix: on X86 an immediate argument of the IMUL instruction is
3559 correctly printed in disassembly. (thanks to Lutz Euler)
3560 * bug fix: class slots in redefined classes preserve their old
3561 values. (thanks to Bruno Haible and Nikodemus Siivola)
3562 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3563 succeeds. (reported by Marco Baringer)
3564 * fixed some bugs revealed by Paul Dietz' test suite:
3565 ** READ-SEQUENCE now works on ECHO-STREAMs.
3566 ** RATIONALIZE works more according to its specification. (thanks
3569 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3570 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3571 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3572 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3573 should matter to you only if you rebind the printer control
3574 variables and then find you want different bindings in the
3575 debugger than in the ordinary execution of your program.)
3576 * The runtime build system has been tweaked to support building
3577 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3578 assembler and linker. (thanks to Nikodemus Siivola)
3579 * Unbound, undefined, undeclared variables now trigger full
3580 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3581 more often programmer error than deliberate exploitation of undefined
3583 * optimization: the hash algorithm for strings has changed to one
3584 that is less vulnerable to spurious collisions. (thanks to Juho
3586 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3587 needless bounds checking. (thanks to Juho Snellman)
3588 * optimization: implemented multiplication as a modular
3589 (UNSIGNED-BYTE 32) operation on the PPC backend.
3590 * fixed some bugs revealed by Paul Dietz' test suite:
3591 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3593 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3594 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3595 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3597 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3599 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3601 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3602 their output stream on EOF from read.
3603 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3604 have been read to end-of-file.
3605 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3607 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3608 description of determination of which consecutive characters
3610 ** Printing the "Space" character with escaping on now yields "#\\ ",
3611 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3612 ** Reading floating-point numbers with *READ-BASE* set to a number
3613 less than 10 works correctly.
3614 ** Reading floating-point numbers with *READ-BASE* set to a number
3615 more than 10 works correctly.
3616 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3617 the readtable currently in effect.
3619 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3620 * minor incompatible change: parsing of namestrings on a physical
3621 (Unix) host has changed; numbers after the final #\. in a
3622 namestring are no longer interpreted as a version field. This is
3623 intented to be largely invisible to the user, except that the
3624 meaning of the namestring "*.*.*" has changed: it now refers to a
3625 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3626 should usually be replaced by
3627 (make-pathname :name :wild :type :wild :version :wild)
3628 with the added benefit that this is more likely to be portable.
3629 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3630 option to OPEN now signals an error if the file being opened
3631 exists; this may have an impact on existing code.
3632 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3633 signals received, on the PowerPC platforms (both Linux and
3634 Darwin). (thanks to Pierre Mai for pointing out the location of
3636 * several fixes on OS X: The system now builds and runs cleanly on
3637 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3638 (thanks to Brian Mastenbrook)
3639 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3640 second-resolution: integer multiples of 1/3600 between -24 and 24.
3641 (thanks to Vincent Arkesteijn)
3642 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3643 type when called with 1 argument; PEEK-CHAR checked type of
3644 PEEK-TYPE only after having read first character from a
3645 stream. (reported by Peter Graves)
3646 * bug fix: the garbage collector now has much better locality
3647 behaviour, and in particular no longer treats all memory as being
3648 exhausted when many small objects point to each other in a deeply
3650 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3651 recognized as being TYPEP their class.
3652 * bug fix: the PUSHNEW documentation string has been corrected.
3653 (thanks to Vincent Arkesteijn)
3654 * bug fix: defaulting of the value for the last of an atypically
3655 large number of multiple values being bound was not being
3656 performed correctly on the Alpha or PPC platforms
3657 * optimization: implemented multiplication as a modular
3658 (UNSIGNED-BYTE 32) operation on the x86 backend.
3659 * optimization: SEARCH on simple-base-strings can now be open-coded.
3660 (see also contrib/compiler-extras.lisp for inspiration for
3661 teaching the compiler about the Boyer-Moore algorithm).
3662 * value, returned by MAX (and MIN) called with several EQUALP, but
3663 not EQL, arguments now does not depend on compiler settings.
3664 * fixed some bugs revealed by Paul Dietz' test suite:
3665 ** in stack analysis liveness information is propagated from
3666 non-local entry points.
3667 ** pathwise CAST removing failed when the CAST node did not start
3669 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3670 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3672 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3673 host is already defined.
3674 ** RENAME-FILE works on streams instead of signalling an internal
3676 ** PEEK-CHAR uses the current readtable when determining whether
3677 or not a character is whitespace.
3678 ** MERGE-PATHNAMES handles the case when the pathname does not
3679 specify a name while the default-pathname specifies a version.
3680 ** Pathnames now stand a better chance of respecting print/read
3682 ** Attempting to use standardized file system operators with a
3683 pathname with invalid :DIRECTORY components signals a
3685 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3687 ** DIRECTORY on logical pathnames is more correct.
3688 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3689 signal a TYPE-ERROR if their argument is not a stream.
3690 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3691 designator argument does not designate a stream.
3692 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3693 examining the synonym.
3694 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3696 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3697 element-type larger than ([UN]SIGNED-BYTE 32).
3699 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3700 * When built with the :SB-FUTEX feature, threaded builds now take
3701 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3702 for faster/more reliable mutex and condition variable support.
3703 * Incompatible change (but one you probably shouldn't have been using
3704 anyway): the interface and code for arbitrating between multiple
3705 threads in the same user session has been redesigned.
3706 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3707 error when called without an explicit environment argument.
3708 (thanks to Nikodemus Siivola)
3709 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3710 confused about their position. (thanks to Adam Warner and Gerd
3712 * bug fix: Pretty printing backquoted forms with unquotations in the
3713 argument list position of various code constructs such as LAMBDA
3714 now works correctly. (reported by Paul Dietz)
3715 * bug fix: Pretty printing unquotations no longer loses all
3716 stream position information.
3717 * optimization: performance of string output streams is now less
3718 poor for multiple small sequence writes.
3719 * optimization: performance of CSUBTYPEP in the presence of complex
3720 expressions involving CONS and NOT many times has been improved.
3721 (reported by Paul Dietz)
3722 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3724 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3725 streams for the REPL, for the debugger, and so on. (thanks to
3727 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3728 * fixed some bugs revealed by Paul Dietz' test suite:
3729 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3730 is ignored if it is too small, rather than propagating through
3731 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3732 ** extremely complex negations of CONS types were not being
3733 sufficiently canonicalized, leading to inconsistencies in
3735 ** VALUES tranformer lost derived type.
3737 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3738 * fixed a bootstrapping bug: the build process no longer assumes
3739 that the various BOOLE-related constants have the same value in
3740 host and target lisps. (noted by Paul Dietz' test suite on an
3741 SBCL binary built from CLISP)
3742 * The system can now be dynamically linked on the MIPS platform,
3743 which enables dynamic loading of foreign code from Lisp. (thanks
3744 to Ralf Baechle for discussions on the MIPS ABI)
3745 * The system now records debugging information for its own source
3746 files in a filesystem-position-independent manner, relative to
3747 the "SYS" logical host.
3748 * fixed a compiler bug: MV-LET convertion did not check references
3749 to the "max args" entry point. (reported by Brian Downing)
3750 * tweaked disassembly notes to be less confident about proclaiming
3751 some instruction as an LRA. (thanks to Brian Downing)
3752 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3753 now each have their own history, command character, and other
3754 characteristics. (thanks to David Lichteblau)
3755 * fixed some bugs revealed by Paul Dietz' test suite:
3756 ** compiler failure in compiling LOGAND expressions including a
3758 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3759 shift greater than 32.
3760 ** FLUSH-DEST did not mark blocks for type check regeneration.
3761 ** HANDLER-CASE failed to accept declarations in handler clauses
3762 in some circumstances.
3764 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3765 * New code in contrib/sb-introspect (still probably not entirely
3766 stable yet) provides some support for smart Lisp development
3767 environments like SLIME.
3768 * The conditions signalled for errors occurring when loading .fasl
3769 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3770 in a way which should help ASDF recover gracefully.
3771 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3772 stuff has been cleaned up. If you code contrib/ stuff, this might
3773 affect you, and you can look at contrib/README, contrib/STANDARDS,
3774 and/or the 0.8.4.27 diff to check.
3775 * In full calls the compiler now does not generate checks for declared
3776 argument types for all arguments.
3777 * various threading fixes
3778 ** and some experimental patches which didn't make it into
3779 the main tree for this release, but which are shipped in
3780 contrib/experimental-thread.patch as a possible fix for some
3781 failures (deadlock, spinning...) in GC-intensive multithreaded
3783 * fixed PPC build problem (source code incompatibility of different
3784 library versions): added offsetof() hackery which attempts to divine
3785 where glibc maintainers put uc_mcontext today
3786 * fixed bug 282: compiler does not trust type assertions while passing
3787 arguments to a full call.
3788 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3789 &OPTIONAL VALUES type parameter.
3790 * fix bug 214: algorithm for noting rejected templates is now more
3791 similar to that of template seletion. (also reported by rydis on
3793 * fixed bug 141b: printing backquoted information readably and prettily
3794 inserts a space where necessary.
3795 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3796 (CHARACTER 10) are now reported as errors, rather than propagated
3797 as unknown types. (reported by piso on #lisp)
3798 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3799 with values NIL and :ERROR. (thanks to Milan Zamazal)
3800 * fixed bug 191c: CLOS now does proper keyword argument checking as
3801 described in CLHS 7.6.5 and 7.6.5.1.
3802 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3803 longer raise an error; further, using a list as a for-as-arithmetic
3804 counter now raises a meaningful error.
3805 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3806 now understood by sequence creation functions such as MAKE-SEQUENCE
3808 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3809 a STRING-INPUT-STREAM.
3810 * compiler enhancement: SIGNUM is now better able to derive the type
3812 * type declarations inside WITH-SLOTS are checked. (reported by
3814 * fixed some bugs revealed by Paul Dietz' test suite:
3815 ** incorrect optimization of TRUNCATE for a positive first
3816 argument and negative second.
3817 ** compiler failure in let-convertion during flushing dead code.
3818 ** compiler failure while deriving type of TRUNCATE on an
3819 interval, containing 0.
3820 ** ASH of a negative bignum by a negative bignum count now returns
3822 ** intersection of CONS types now canonicalizes properly, fixing
3823 inconsistencies in SUBTYPEP.
3825 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3826 * incompatible change: The --disable-debugger command line
3827 option now clobbers the debugger at a more fundamental
3828 level, by redefining #'INVOKE-DEBUGGER instead of by
3829 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3830 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3831 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3832 enter the debugger REPL and then suffer recursive errors
3833 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3834 while under the new system, BREAK in --disable-debugger mode
3835 terminates the system just as an unhandled error would.
3836 * fixed compiler performance when processing loops with a step >1;
3837 * bug fix: DOCUMENTATION now retrieves generic function
3838 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3839 support has been systematized, and now supports the methods
3840 specified by ANSI, along with a default method and a method for
3841 slot documentation. (reported by Nathan Froyd)
3842 * bug fix: effective methods associated with a generic function are
3843 no longer cached over a change of that generic function's method
3844 combination. (reported by Andreas Fuchs)
3845 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3846 names a non-existent directory. (thanks to Andreas Fuchs)
3847 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3848 the PPC platform, lead to stack corruption; this has been fixed.
3849 (reported by Rainer Joswig)
3850 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3851 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3852 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3853 arithmetic in general, is now much more reliable on the PPC
3855 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3856 platform now returns the right answer.
3857 * optimization: restored some effective method precomputation in
3858 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3859 precomputation is now tunable.
3860 * optimization: compiler-internal data structure use has been
3861 reviewed, and changes have been made that should improve the
3862 performance of the compiler by about 20%.
3863 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3864 simple-base-strings and simple-bit-vectors is improved.
3865 * optimization: the optimization of 32-bit logical and arithmetic
3866 functions introduced in version 0.8.3 on the x86 has been
3867 implemented on the mips, ppc and sparc platforms; an
3868 implementation of the same facility, but for 64-bit arithmetic,
3869 has been added for the alpha.
3870 * microoptimization: the compiler is better able to make use of the
3871 x86 LEA instruction for multiplication by constants.
3872 * bug fix: in some situations compiler did not report usage of
3873 generic arithmetic in (SPEED 3) policy.
3874 * bug 145b fix: compiler used wrong type specifier while converting
3875 MEMBER-types to numeric.
3876 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3878 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3879 index argument now works properly on the Alpha platform.
3880 * bug fix: floating point exception treatment on the Alpha platform
3882 * bug fix: FILE-POSITION works much better on string input and
3883 output streams. (thanks to Nikodemus Siivola)
3884 * bug fix: many threading/garbage collection symptoms sorted.
3885 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3886 might be pseudo-atomic.
3887 * internal change: Stopping for GC is now done with signals not
3888 ptrace. GC is now done in whichever thread wanted it, instead of
3890 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3892 * bug fix: result form in DO is not contained in the implicit
3894 * incompatible change: ICR structure is changed; the value part of
3895 CONTINUATION is now called LVAR; corresponding functions are
3896 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3897 * added type deriver for ISQRT (thanks to Robert E. Brown).
3898 * bug fix: better support for loading from the command line when an
3899 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3901 * fixed some bugs revealed by Paul Dietz' test suite:
3902 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3903 ** ROUND and FROUND now give the right answer when given very
3904 small float arguments.
3905 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3907 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3908 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3909 ** LCM should return a non-negative integer.
3910 ** PARSE-INTEGER returned the index of a terminator instead of the
3911 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3912 ** PARSE-INTEGER returned an incorrect index being applied to a
3914 ** LCM with two arguments of 0 returns 0 rather than signalling
3916 ** unsigned addition of a 32-bit constant with the high bit set no
3917 longer causes an internal compiler error on the x86.
3918 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3919 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3920 with negative last argument.
3921 ** byte specifiers with zero size and position no longer cause
3922 an error during type derivation.
3923 ** bignum multiplication on the Alpha platform now returns the
3925 * porting: The system now builds on SuSE AMD64, although it still
3926 generates a 32-bit binary.
3927 * .fasl file incompatibility: The fasl file version number has
3928 been incremented (because of the changes to internal compiler
3929 data structures referred to above).
3931 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3932 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3933 more accurately, on the Darwin kernel running on PowerPC hardware.
3934 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3935 * Compiler code deletion notes now signal a condition of type
3936 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3937 an associated MUFFLE-WARNING restart.
3938 * The compiler now performs limited argument count validation of
3939 constant format strings in FORMAT, and where appropriate in ERROR,
3940 CERROR and WARN. (thanks to Gerd Moellmann)
3941 * New ASDF-INSTALL contrib can be used for automatic download and
3942 installation of third-party Lisp code from CCLAN or other sites
3944 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3945 which forces another thread to execute a function supplied by the
3947 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3948 now accept and act upon their :ELEMENT-TYPE keyword argument.
3949 (reported by Martin Atzmueller, Edi Weitz)
3950 * bug fix: FILE-POSITION now accepts position designators up to
3951 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3952 is the greater. (thanks to Patrik Nordebo)
3953 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3954 Kalle Olavi Niemitalo)
3955 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3956 printable. (reported by Eric Marsden)
3957 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3958 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3959 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3960 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3961 (thanks to Stig Sandoe)
3962 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3963 UNREAD-CHAR now correctly includes the unread character in the
3964 target sequence. (thanks to Gerd Moellmann)
3965 * bug fix in threaded builds: the system can now be suspended and
3966 resumed by shell job control with minimal disruption.
3967 * bug fixes in times and timezones >2038AD
3968 * better handling of "where is GNU make?" problem in build scripts
3969 (thanks to Nikodemus Siivola)
3970 * new optimization: inside a named function any reference to a
3971 function with the same name is considered to be a self-reference;
3972 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3973 optimization quality.
3974 * new optimization on x86: logical functions and + now have
3975 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3976 used when the result is truncated to 32 bits.
3977 * VALUES declaration is partially enabled.
3978 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3979 * fixed some bugs revealed by Paul Dietz' test suite:
3980 ** The system now obeys the constraint imposed by
3981 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3982 types form a lattice under type intersection.
3983 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3984 ** ASSOC now ignores NIL elements in an alist.
3985 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3986 and (1+ MOST-POSITIVE-FIXNUM) answers.
3987 ** The addition of a method with invalid qualifiers to a generic
3988 function does not cause an error to be signalled immediately;
3989 a warning is signalled, and the error is generated only on
3990 calling the generic function.
3991 * changed .fasl file version number, in part to add type codes for
3992 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3993 obscure ANSI requirements
3995 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3996 * fixed bug 148: failure to inline-expand a local function left
3997 garbage, confusing the compiler.
3998 * fixed bugs 3cd: structure slot readers perform type check if the
3999 slot can have an invalid value (i.e. it is either not initialized
4000 or can be written with a less specific slot writer).
4001 * bug fix: the compiler now traps array references to elements off
4002 the end of an array; previously, the bounds checking in some
4003 circumstances could go off-by-one.
4004 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4006 * type declarations for array element types now obey the description
4007 on the CLHS page "Declaration TYPE", as per discussions on
4008 sbcl-help around 2003-05-08. This means that a declaration
4009 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4010 declaration, all references to BAR will be asserted or assumed
4011 (with THE, so dependent on compiler policy) to involve objects of
4012 type FOO. Note that no such declaration is implied in
4013 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4014 * declared types of functions from the "Conditions"
4015 chapter. (reported by Paul Dietz)
4016 * bug fix: CERROR accepts a function as its first argument.
4017 * bug fix: NTH an NTHCDR accept a bignum as index
4018 arguments. (reported by Adam Warner)
4019 * optimization: character compare routines now optimize comparing
4020 against a constant character. (reported by Gilbert Baumann)
4021 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4022 argument now works properly on the MIPS platform.
4023 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4024 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4025 declared to have a functional type, does not cause an error
4027 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4028 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4029 * fixed bug: if last continuation of a deleted block has a
4030 destination, this destination should be deleted too. (reported by
4032 * fixed a bug in the bootstrap process: the host compiler's values
4033 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4034 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4035 test case from Patrik Nordebo)
4036 * improved the ability of the disassembler on the PPC platform to
4037 provide helpful disassembly notes.
4038 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4039 the class in more cases than previously.
4040 * bug fix: FILE-POSITION now understands :START and :END for
4041 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4042 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4043 8) data. (thanks to David Lichteblau)
4044 * bug fix: it is possible to add a method to a generic function
4045 without lambda list.
4046 * bug fix: reader failed to signal END-OF-FILE inside an
4047 object representation. (reported by Nikodemus Siivola)
4048 * fixed some bugs revealed by Paul Dietz' test suite:
4049 ** LAST and [N]BUTLAST should accept a bignum.
4050 ** condition slot accessors are methods.
4051 ** (VECTOR NIL) is a subtype of STRING.
4053 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4054 * minor incompatible change: some nonsensical specialized lambda
4055 lists (used in DEFMETHOD) which were previously ignored now signal
4057 * minor incompatible change: the system is now aware of the types of
4058 variables in the COMMON-LISP package, and will signal errors for
4059 most violations of these type constraints (where previously they
4060 were silently accepted).
4061 * minor incompatible change: COMPILE-FILE now uses the freedom
4062 afforded (ANSI 3.2.2.3) to use derived function types for
4063 functions defined in the same file. This also permits the system
4064 to warn on static type mismatches and function
4065 redefinition. (Currently it does not work with high DEBUG level.)
4066 * minor incompatible change: VALUES declaration is disabled.
4067 * When issuing notes, the compiler now signals a condition of type
4068 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4069 restart for use in user handlers. It is expected that the
4070 COMPILER-NOTE condition will eventually become a condition
4071 supertype to a hierarchy of note types, which will then be
4072 handleable in a similar fashion. However, at the moment, no such
4073 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4074 but it's an implementation detail, not a classification for the
4076 * Changes in type checking closed the following bugs:
4077 ** type checking of unused values (192b, 194d, 203);
4078 ** template selection based on unsafe type assertions (192c, 236);
4079 ** type checking in branches (194bc).
4080 * A short form of VALUES type specifier has ANSI meaning (it has
4081 increased the number of situations when SBCL cannot perform type
4083 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4084 keywords or constants is permissible.
4085 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4086 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4087 classes. (thanks to Antonio Martinez)
4088 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4089 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4090 argument to a pretty-print stream. Instead, it leaves any such
4091 operations to DESCRIBE-OBJECT methods.
4092 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4094 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4095 lambda lists. (thanks to David Lichteblau)
4096 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4097 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4098 (thanks to Gerd Moellmann)
4099 * fixed bug 246: increased compilation speed of long
4100 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4102 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4104 * DEFCONSTANT now throws a condition of type
4105 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4106 constant to a non-EQL value; CONTINUE and ABORT restarts
4107 respectively change and preserve the value.
4108 * fixed bug 63: The code walker, part of the implementation of CLOS,
4109 is now better at handling symbol macros.
4110 * bug fix: There is no longer an internal implementation type named
4111 CL:LENGTH. (reported by Raymond Toy)
4112 * bug fix: In macro-like defining macros/special operators the
4113 implicit block does not enclose the lambda list.
4114 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4115 enclosed in parentheses) are not suitable as type specifiers, and
4116 their use properly signals an error now.
4117 * bug fix: An argument count mismatch for a type specifier in code
4118 being compiled no longer causes an unhandled error at compile
4119 time, but signals a compile-time warning.
4120 * fixed simple vector readable printing
4121 * bug fix: DESCRIBE takes more care over whether the class
4122 precedence list slot of a class is bound before accessing it.
4123 (reported by Markus Krummenacker)
4124 * bug fix: FORMATTER can successfully compile pretty-printer format
4125 strings which use variants of the ~* directive inside.
4126 * bug fix: SEARCH now applies its TEST predicate to the elements of
4127 the arguments in the correct order. (thanks to Wolfhard Buss)
4128 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4129 in type inference. (thanks to Robert E. Brown)
4130 * bug fix: Reading in symbols with an explicit package name of ""
4131 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4132 * fixed some bugs revealed by Paul Dietz' test suite:
4133 ** NIL is now allowed as a structure slot name.
4134 ** Arbitrary numbers, not just REALs, are allowed in certain
4135 circumstances in LOOP for-as-arithmetic clauses.
4136 ** Multiple class redefinitions before slot access no longer
4137 causes a type error.
4138 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4139 association between the name and a class.
4140 ** Generic functions with non-standard method-combination and over
4141 five methods all of which return constants no longer return NIL
4142 after the first few invocations. (thanks to Gerd Moellmann)
4143 ** CALL-NEXT-METHOD with no arguments now passes the original
4144 values of the arguments, even in the presence of assignment.
4145 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4147 ** DISASSEMBLE works with closures and funcallable instances.
4148 ** ADD-METHOD now returns the generic function, not the new method.
4149 ** FIND-METHOD signals an error if the lengths of the specializers
4150 is incompatible with the generic function, even if the ERRORP
4152 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4153 which its argument is a member.
4154 ** DEFCLASS only redefines the class named by its class-name
4155 argument if that name is the proper name of the class;
4156 otherwise, it creates a new class.
4157 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4158 of the UNBOUND-SLOT condition to the name of the slot.
4159 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4160 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4161 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4162 SLOT-MAKUNBOUND in the specified fashion.
4164 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4165 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4166 cross-compilation host. As a consequence, we can now bootstrap our
4167 way up to SBCL starting with a bare gcc toolchain and human-readable
4168 source code (first the source to CLISP, then the source to SBCL).
4169 * A contributed module containing a partial implementation of the
4170 simple-streams interface has been included. (thanks to Rudi
4172 * A contributed module implementing the RFC1321 Message Digest
4173 Algorithm, known as MD5, has been included.
4174 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4175 no longer has any effect, as the code controlled by this feature
4176 has been deleted. (As far as we know, no-one has ever built using
4177 this feature, and its semantics were confused in any case).
4178 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4179 work on conditions (as required by the ANSI specification),
4180 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4181 expected behaviour on conditions. Users should note, however,
4182 that such behaviour is not required by the ANSI specification,
4183 and so use of this behaviour may render their code unportable.
4184 * fixed some bugs revealed by Paul Dietz' test suite:
4185 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4187 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4188 ** SXHASH on condition objects no longer returns NIL.
4189 ** :ALLOCATION :CLASS slots are better treated; their values are
4190 updated on class redefinition, and initforms inherited from
4191 superclasses are applied.
4192 ** REMOVE-METHOD returns its generic function argument even when
4193 no method was removed.
4194 ** SHARED-INITIALIZE now initializes the values of the requested
4195 slots, including those with :ALLOCATION :CLASS.
4196 ** ALLOCATE-INSTANCE now works on structure classes defined via
4197 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4199 ** SLOT-EXISTS-P now works on conditions, as well as structures
4201 ** MAKE-LOAD-FORM now has the required methods on
4202 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4203 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4204 keyword, and now implements the SLOT-NAMES argument.
4205 ** methods with &OPTIONAL arguments no longer allow too many
4206 arguments to be passed in the call without error.
4207 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4208 option is consistent with the required arguments of the generic
4209 function lambda list.
4210 * bug fix: REQUIRE accepts a string designator. (Thanks to
4212 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4213 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4214 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4215 * bug fix: The compiler now checks for duplicated variables in macro
4217 * bug fix: SETQ on globals returns the correct value.
4218 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4219 not a COMPILER-ERROR (followed by some other strange error on
4220 choosing the CONTINUE restart).
4221 * bug fix: make.sh and friends are now more consistent in the way that
4222 they look for GNU "make".
4224 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4225 * experimental native threads support (on x86 Linux >=2.4 only).
4226 This is not compiled in by default: you need to add :SB-THREAD to
4227 the target features. See the "Beyond ANSI" chapter of the manual
4229 * fix for longstanding nonANSIism: The old distinction between
4230 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4231 The return value from CL:FIND-CLASS is now a CLOS class, and
4232 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4233 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4234 * An interface to the MetaObject Protocol, as described in Kiczales,
4235 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4236 MIT Press, 1991, is available from the SB-MOP package.
4237 * incompatible change: the SB-PCL package should now be considered
4238 a private implementation detail, and no longer a semi-private MOP
4240 * minor incompatible change: due to rearrangement for threads, the
4241 control stack and binding stack are now allocated at arbitrary
4242 addresses instead of being hardcoded per-port. Users affected by
4243 this probably have to be doing advanced things with shared
4244 libraries, and will know who they are.
4245 * minor incompatible change: Previously, all --eval forms used were
4246 processed with READ before any of them were processed with EVAL.
4247 Now each --eval form is processed with both READ and EVAL before
4248 the next --eval form is processed. (Thus package operations like
4249 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4250 work as the user might reasonably expect.)
4251 * minor incompatible change: *STANDARD-INPUT* is now only an
4252 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4254 * minor incompatible change: Y-OR-N-P is now character-oriented,
4255 not line oriented. Also, YES-OR-NO-P now works without errors.
4256 (thanks to Antonio Martinez)
4257 * sb-aclrepl module improvements: an integrated inspector, added
4258 repl features, and a bug fix to :trace command.
4259 * Known functions, which cannot be open coded by the backend, are
4260 considered to be able to check types of their arguments. (fixing
4261 a bug report by Nathan J. Froyd)
4262 * fixed a bug in computing method discriminating functions: It is
4263 now possible to define methods specialized on classes which have
4264 forward-referenced superclasses. (thanks to Gerd Moellmann)
4265 * fixed evaluation order in optional entries (reported by Gilbert
4267 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4268 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4269 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4270 required-by-AMOP NAME argument, as well as CLASS and
4271 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4272 * fixed bug 20: DEFMETHOD can define methods using names that are
4273 not the proper names of classes to designate class specializers.
4274 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4275 Unix file descriptors, instead of blowing up. (thanks to Antonio
4277 * Garbage collection refactoring: user-visible change is that a
4278 call to the GC function during WITHOUT-GCING will not do garbage
4279 collection until the end of the WITHOUT-GCING. If you were doing
4280 this you were probably losing anyway.
4281 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4282 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4283 TYPEP the latter but not the former.
4284 * The compiler issues a full WARNING for calls to undefined functions
4285 with names from the CL package.
4286 * MAP-INTO for a vector destination is open coded. (reported by
4287 Brian Downing on c.l.l)
4288 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4289 documentation string.
4290 * fixed some bugs revealed by Paul Dietz' test suite:
4291 ** COPY-ALIST now signals an error if its argument is a dotted
4293 ** Condition slots are now accessed more correctly in the presence
4294 of multiple initargs for a given slot.
4295 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4296 exclude restarts of the same name associated with a different
4298 ** DEFCLASS of forward-referenced classes with another
4299 forward-referenced class in the superclasses list no longer
4301 ** Condition slots are now initialized once each, not multiple
4302 times. (thanks to Gerd Moellmann)
4303 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4305 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4306 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4307 arguments contain duplicated elements.
4308 ** RESTART-CASE understands local macros.
4309 ** RESTART-CASE associates exactly its own restarts with a condition.
4310 ** ENDP in safe mode checks its argument to be of type LIST.
4311 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4312 in question is unbound.
4313 ** Optimized MAKE-INSTANCE functions no longer cause internal
4314 assertion failures in the presence of duplicate initargs.
4315 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4316 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4317 propagated even in the ctor optimized implementation of
4319 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4321 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4322 * a better implementation of SXHASH on (simple) bit vectors,
4323 measured both in execution speed and in distribution of results
4324 over the positive fixnums, has been installed. Likewise, a better
4325 implementation of EQUAL for simple bit vectors is now available.
4326 * fixed CEILING optimization for a divisor of form 2^k.
4327 * fixed bug 240 (emitting extra style warnings "using the lexical
4328 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4329 by Antonio Martinez)
4330 * fixed SXHASH, giving different results for NIL depending on type
4331 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4332 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4333 variable. (found by Rolf Wester)
4334 * SBCL does not ignore type declarations for special
4335 variables. (reported by rif on c.l.l 2003-03-05)
4336 * some bug fixes in contrib/sb-aclrepl/
4337 * fixed some bugs revealed by Paul Dietz' test suite:
4338 ** a bug in the CONS type specifier, whereby the CAR and CDR
4339 types got intertwined, has been fixed;
4340 ** the type system is now able to reason about the interaction
4341 between INTEGER and RATIO types more completely;
4342 ** APPEND, [N]REVERSE and NRECONC check that those their
4343 arguments, which must be proper lists, are really so;
4344 ** An array specialized to be unable to hold elements has been
4345 implemented, as required -- yes, really -- by ANSI;
4346 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4347 on malformed property lists;
4349 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4350 * incompatible packaging change: in line with Unix convention,
4351 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4352 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4353 * REQUIRE and PROVIDE are now optionally capable of doing something
4354 useful. See the documentation string for REQUIRE.
4355 * infrastructure for a managed SBCL contrib system: contributed
4356 modules in this release include:
4357 ** the ASDF system definition facility;
4358 ** an interface to the BSD Sockets API;
4359 ** an ACL-like convenience interface to the repl;
4360 (thanks to Kevin Rosenberg)
4361 ** an implementation of ROTATE-BYTE, with efficient implementation
4363 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4364 gives a closer approximation to the right answer than previously.
4365 (thanks to Raymond Toy)
4366 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4367 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4368 optional environment arguments, as required by ANSI.
4369 * fixed bugs in other functions taking environment objects, allowing
4370 calls with an explicit NIL environment argument to be compiled
4372 * fixed bug 228: primary return values from
4373 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4374 COMPILE or FUNCTION.
4375 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4376 :TYPE will no longer signal errors on innocuous objects.
4377 * fixed bug 231b: SETQ is better at respecting type declarations in
4378 the lexical environment.
4379 * fixed a bug in DEFCLASS: classes named by symbols with no or
4380 unprintable packages can now be defined.
4381 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4382 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4383 * fixed compiler failure related to checking types of functions.
4384 (reported by Robert E. Brown)
4385 * the compiler is now much more consistent in its error-checking
4386 treatment of bounding index arguments to sequence functions: in
4387 (SAFETY 3) code, errors will be signalled in almost all cases if
4388 invalid sequence bounding indices are passed to functions defined
4389 by ANSI to operate on sequences.
4390 * fixed a bug in the build procedure: documentation of SBCL-specific
4391 packages is now preserved and available in the final Lisp image.
4392 * lifted FDEFINITION lookup out of loops in the implementation of
4393 many list operations. (thanks to Robert E. Brown)
4394 * fixed a bug in the reader: the #n# reader macro now works for
4395 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4396 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4397 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4398 E. Brown and Tony Martinez respectively)
4399 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4400 SLOT-BOUNDP: in particular, it is now able to optimize them much
4401 better, and is now not vulnerable to having packages renamed.
4402 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4403 always called when a slot is not present in an instance. (thanks
4405 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4406 longer signal an error on unreading a character following EOF on
4407 the previous constituent stream. (thanks to Tony Martinez)
4408 * fixed some bugs revealed by Paul Dietz' test suite:
4409 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4410 not just nonnegative fixnums;
4411 ** the logical bit-array operators such as BIT-AND now accept an
4412 explicit NIL for their "opt-arg" argument (to indicate a
4413 freshly-consed result bit-array);
4414 ** ELT now signals an error on an invalid sequence index in safe
4416 ** the type system is now cleverer about negations of numeric
4417 types, and consequently understands the BIGNUM and RATIO types
4419 ** the type system is now cleverer about the interaction between
4420 INTEGER and RATIO types: while bugs still remain, many more
4421 cases are accurately computed;
4422 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4423 if it is in the last clause;
4424 ** CONSTANTLY now correctly returns a side-effect-free function in
4426 ** DECLARE is no longer treated as a special-operator; in
4427 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4428 * incremented fasl file version number due to the change in the
4429 DEFSTRUCT-SLOT-DESCRIPTION structure.
4431 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4432 * minor incompatible change: code processed by the "interpreter" or
4433 EVAL now has a compilation optimization policy of (DEBUG 2)
4434 (changed from (DEBUG 1)) to improve debuggability of interactive
4435 development, and to allow the use of the debug RETURN command in
4437 * an experimental implementation of the RETURN command for the
4438 debugger has been included. (thanks to Frederik Kuivinen)
4439 * fixed bug 62: constraints were not propagated into a loop.
4440 * fixed bug in embedded calls of SORT (reported and investigated by
4442 * fixed some bugs revealed by Paul Dietz' test suite:
4443 ** printing and reading of arrays with some dimensions having
4444 length 0 (thanks to Gerd Moellmann);
4445 ** BOA constructor with &AUX argument without a default value does
4446 not cause a type error;
4447 ** CONSTANTP now returns true for all self-evaluating objects.
4449 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4450 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4451 accessors that are related by inheritance, as specified in the
4452 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4453 Valtteri Vuorikoski)
4454 * The compiler is now able to inline functions that were defined in
4455 a complex lexical environment (e.g. inside a MACROLET).
4456 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4458 * Support for the upcoming FreeBSD-5.0 release has been included.
4459 (thanks to Dag-Erling Smorgrav)
4460 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4461 effect when it is not in a toplevel context.
4462 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4463 stand a better chance of being correct. (thanks to Gerd
4465 * fixed bug in COERCE, which now signals an error on coercing a
4466 rational to a bounded real type which excludes the expected
4468 * The compiler is now able to derive types more accurately from the
4469 COERCE and COMPILE functions.
4470 * fixed bug 223: functional binding is considered to be constant
4471 only for symbols in the CL package.
4472 * fixed bug 231: SETQ did not check the type of a variable being set
4473 (reported by Robert E. Brown)
4474 * A new optimization for MAKE-INSTANCE has been included, fixing
4475 various bugs (including relating to :ALLOCATION :CLASS slots and
4476 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4478 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4479 ** As required by ANSI, LOOP now disallows anonymous collection
4480 clauses such as COLLECT I in conjunction with aggregate boolean
4481 clauses such as THEREIS (= I 1);
4482 ** LOOP now signals an error when any variable is reused in the
4483 same loop (including the potentially useful construct analogous
4484 to WITH A = 1 WITH A = (1+ A);
4485 ** IT is only a special loop symbol within the first clause of a
4486 conditional loop clause;
4487 ** LOOP with a typed iteration variable over a hashtable now
4488 signals a type error iff it should.
4489 * fixed some other bugs revealed by Paul Dietz' test suite:
4490 ** FILE-STREAM now names the class previously known as FD-STREAM;
4491 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4492 argument) no longer signals an error;
4493 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4494 of the slot symbol, rather than using the current package
4495 ((:CONC-NAME "") continues to intern the slot's name in the
4497 * incremented fasl file version number, because of the incompatible
4498 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4499 of the new implementation of DEFINE-COMPILER-MACRO.
4501 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4502 * Support for building SBCL for MIPS platforms running in
4503 little-endian mode has now been checked in, and basic
4504 functionality on said platforms verified.
4505 * minor incompatible change: PCL now records the pathname of a file
4506 in which methods and the like are defined, rather than its
4508 * minor incompatible change: TRUENAME now considers the truename of
4509 a file naming a directory to be the pathname with :DIRECTORY
4510 component indicating that directory.
4511 * minor incompatible change: a NAMED clause in the extended form of
4512 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4513 reason for the previous behaviour is unclear.
4514 * more systematization and improvement of CLOS and MOP conformance
4515 in PCL (thanks to Gerd Moellman and Pierre Mai):
4516 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4518 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4519 primary methods with no specializers;
4520 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4522 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4523 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4524 FORWARD-REFERENCED-CLASSes; error reporting on
4525 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4527 ** SXHASH on CLOS instances now uses a slot internal to the
4528 instance to return different numbers on distinct instances,
4529 while preserving the same return value through invocations of
4531 ** DEFMETHOD signals errors when methods with longer incongruent
4532 lambda lists are added to generic functions;
4533 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4534 CLASS, as specified in AMOP;
4535 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4536 on the order returned by the primary method for classes of
4537 class STANDARD-CLASS;
4538 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4539 * fixed some bugs shown by Paul Dietz' test suite:
4540 ** DOLIST puts its body in TAGBODY;
4541 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4543 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4544 value producing form;
4545 ** if more variables are given to PROGV than values, extra
4546 variables are bound and made to have no value;
4547 ** NSUBSTITUTE on list arguments gets the right answer with
4549 ** ELT signals an error of type TYPE-ERROR when the index argument
4550 is not a valid sequence index;
4551 ** LOOP signals (at macroexpansion time) an error of type
4552 PROGRAM-ERROR when duplicate variable names are found;
4553 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4554 ** FUNCALL of special-operators now cause an error of type
4556 ** PSETQ now works as required in the presence of side-effecting
4557 symbol-macro places;
4558 ** NCONC accepts any object as its last argument;
4559 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4561 ** loop-for-as-package does not require a package to be explicitely
4563 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4565 * fixed bug 166: compiler preserves "there is a way to go"
4566 invariant when deleting code.
4567 * fixed bug 172: macro lambda lists with required arguments after
4568 &REST arguments now cause an error to be signalled. (thanks to
4570 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4571 bug. (thanks to Matthew Danish)
4572 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4574 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4575 arguments are lexically rebound. (thanks to Gerd Moellmann and
4577 * fixed bug 194: error messages are now more informative when there
4578 is no primary method applicable in a call to a generic
4579 function. (thanks to Gerd Moellmann)
4580 * fixed bug in command line argument checking (thanks to Julian
4582 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4583 (thanks to Matthew Danish)
4584 * incremented fasl file version number, because of the
4585 SXHASH-related changes in the layout of CLOS data structures
4587 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4588 * minor incompatible change: The runtime (the Unix executable named
4589 "sbcl") is now much pickier about the .core files it will load.
4590 Essentially it now requires .core files to descend from the same
4591 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4592 as the runtime does. (The intent is to prevent the crashes which
4593 can occur, and which can even be reported as mysterious failures,
4594 when people patch the sources or change the build parameters
4595 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4596 sbcl and .core files.)
4597 * fixed bug: VALUES-LIST is no longer optimized away.
4598 * fixed bug 142: The FFI conversion of C string values to Lisp
4599 string values no longer conses excessively. (thanks to Nathan
4600 Froyd porting Raymond Toy's fix to CMU CL)
4601 * began to systematize and improve MOP conformance in PCL (thanks to
4602 Nathan Froyd, Gerd Moellman and Pierre Mai):
4603 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4605 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4606 ** FINALIZE-INHERITANCE is now called on class finalization;
4607 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4608 argument precedence order.
4609 * fixed bug 202: The compiler no longer fails on functions whose
4610 derived types contradict their declared type.
4611 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4612 so it can be non-toplevel.
4613 * The fasl file version number has changed (because of the new
4614 implementation of DEFMACRO).
4615 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4616 safe code, that any length requirement by their type-specifier
4617 argument is valid. The exceptions to this are described in bug
4619 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4620 functions now check the types of their inputs as required by ANSI.
4621 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4622 introduced symbol is DECLAREd to be SPECIAL.
4623 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4624 * fixed bug: :COUNT argument to sequence functions may be negative
4625 * fixed bug: body of DO-SYMBOLS may contain declarations
4626 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4627 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4628 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4629 symbol macro only once
4630 * fixed printing of call frame when argument list is unavailable
4631 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4632 * compiler no longer signals WARNING on unknown keyword
4635 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4636 * A beta-quality port to the mips architecture running Linux,
4637 based on the old CMUCL backend, has been made. It has been tested
4638 on a big-endian kernel, and works sufficiently well to be able to
4639 rebuild itself; it has not been tested in little-endian mode.
4640 * fixed an inconsistency between gencgc.c and purify.c which made
4641 dumping/loading .core files unreliable
4642 * fixed bug 120a: The compiler now deals correctly with IFs where
4643 the consequent is the same as the alternative, instead of
4644 misderiving the return type. (thanks to Alexey Dejneka)
4645 * fixed bug 113: Logical pathnames are now dumpable (the logical
4646 host is resolved at load-time, throwing an error if it is not
4648 * fixed bug 174: FORMAT's error message is slightly clearer when a
4649 non-printing character is used in a format directive.
4650 * fixed several bugs in compiler checking of type declarations, i.e.
4651 violations of the Python "declarations are assertions" principle
4652 (thanks to Alexey Dejneka)
4653 * fixed several bugs in PCL's error checking (thanks to Gerd
4655 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4657 * fixed bug in compilation of functions as first class values
4658 (thanks to Antonio Martinez-Shotton)
4659 * The compiler's handling TYPE-ERRORs which it can prove will
4660 inevitably happen at runtime has been cleaned up and corrected
4661 in several ways. (thanks to Alexey Dejneka)
4662 * improved argument type checking for various basic arithmetic
4663 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4664 lavished on them in the past that they can be compiled in many
4665 ways in different special cases
4666 * fixed bug 181: compiler checks validity of user supplied type
4668 * cleaned up code flushing in optimization: Function calls which
4669 should signal errors for safety purposes (e.g. which ANSI says
4670 should signal errors when their arguments are of incorrect type)
4671 are no longer optimized away.
4672 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4673 * incremented fasl file version number, because changes in the
4674 implementation of sequence functions like COERCE caused
4675 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4676 in old inline expansions) to become undefined. (Actually these
4677 changes were later undone, so we might very well be binary
4678 compatible with 0.7.7 after all, but leaving the version number
4679 incremented seemed like the simplest and most conservative
4682 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4683 * An alpha-quality port to the parisc architecture running Linux,
4684 based on the old CMUCL backend, has been made. This, even more so
4685 than the other backends, should be considered still a work in
4686 progress; known problems include that the Linux kernel in 64-bit
4687 mode does not propagate the correct sigcontext structure to
4688 userspace, and consequently SBCL on a parisc64 kernel will not
4690 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4691 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4692 suppressed.) Also now that the compiler is looking at declarations
4693 in the environment, it checks optimization declarations as well,
4694 and suppresses inlining when (> DEBUG SPEED).
4695 * More fixes have been made to treatment of floating point exception
4696 treatment and other Unix signals. In particular, floating point
4697 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4698 * The detection and handling of control stack exhaustion (infinite
4699 or very deeply nested recursion) has changed. Stack exhaustion
4700 detection is now done by write-protecting pages at the OS level
4701 and applies at all optimization settings; when found, a
4702 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4703 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4704 be caught using IGNORE-ERRORS.
4705 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4706 correctly when transforming recursive LABELS functions to LETs.
4707 (thanks to Alexey Dejneka)
4708 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4709 that are names of constants or global variables.
4710 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4711 alien routines with docstrings.
4712 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4713 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4715 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4716 (thanks to Eric Marsden)
4717 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4718 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4719 * Bug fix: The SPARC backend can now compile functions involving
4720 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4721 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4722 to a functions expecting a PATHNAME-DESIGNATOR.
4723 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4724 lambda lists. (thanks to Alexey Dejneka)
4725 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4726 functions so that EXPORTing the name of the class doesn't cause
4727 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4728 to Antonio Martinez for reporting this)
4729 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4730 constant-folded without failing an assertion. (thanks to Einar
4731 Floystad Dorum for reporting this)
4732 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4733 types are now dealt with more correctly by the compiler.
4734 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4735 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4736 behaviour analogous to RENAME-FILE. This puts its behaviour more
4737 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4739 * The fasl file version number has changed again. (because of the
4740 bug fix involving the names of PCL MAKE-INSTANCE functions)
4742 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4743 * bug fix: Floating point exceptions are treated much more
4744 consistently on the x86/Linux and PPC/Linux platforms.
4745 * Array initialization with :INITIAL-ELEMENT is now much faster for
4746 cases when the compiler cannot open code the array creation, but
4747 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4748 array accesses have also seen a speed increase.
4749 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4750 specified. (This was at the root of some bad interactions between
4751 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4753 * bug fix: Internal error arguments for undefined functions are now
4754 computed correctly on the PPC/Linux platform.
4755 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4756 Raymond Toy's patch for CMU CL)
4757 * Support for the Solaris 9 operating environment has been included
4758 (thanks to Daniel Merritt)
4759 * A very ugly but hopefully complete draft of the missing FFI chapter
4760 of the manual has been created by reformatting the corresponding
4761 CMU CL manual chapter into (currently very ugly and incoherent)
4762 DocBook and bringing it up to date for SBCL behavior. Thus, the
4763 manual is now essentially complete, at least by my extreme
4764 once-and-only-once standards, whereby it's acceptable to refer to
4765 the doc strings of SB-EXT functions as the primary documentation.
4766 * The fasl file version number has changed again, due to cleanup of
4767 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4768 is no longer a static symbol.)
4770 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4771 * SBCL now builds with OpenMCL (version 0.12) as the
4772 cross-compilation host; also, more progress has been made toward
4773 bootstrapping under CLISP.
4774 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4776 * bug 158 fixed: The compiler can now deal with integer loop
4777 increments different from 1; fixing this turned out also to fix
4779 * bug 169 fixed: no more bogus warnings about using lexical bindings
4780 despite the presence of perfectly good SPECIAL declarations (thanks
4781 to David Lichteblau)
4782 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4783 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4784 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4786 * bug 180 fixed: Method combination specifications no longer ignore
4787 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4788 * bug fix: Structure type predicate functions now check their argument
4789 count as they should.
4790 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4791 correctly. (thanks to Pierre Mai)
4792 * minor incompatible change: The --noprogrammer option is deprecated
4793 in favor of the new --disable-debugger option, which is very similar.
4794 (The major difference is that it takes effect at a slightly different
4795 time at startup, causing handling of errors in --sysinit and
4796 --userinit files will be affected differently.) The
4797 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4798 been added to allow this functionality to be controlled from ordinary
4799 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4800 maintainers, who might want to run non-interactive scripts to
4801 build SBCL cores which will later be used interactively.)
4802 * minor incompatible change: The LOAD function no longer, when given
4803 a wild pathname to load, loads all files matching that pathname.
4804 Instead, an error of type FILE-ERROR is signalled.
4806 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4807 * bug 147 fixed: The compiler preserves its block link/count
4808 invariants more correctly now so that it doesn't crash. (thanks
4810 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4812 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4813 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4814 no-value-for-this-character as NIL (as specified by ANSI).
4815 * HOST-NAMESTRING on physical pathnames now returns a string that is
4816 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4817 (thanks to Christophe Rhodes)
4818 * The Alpha port handles icache flushing more correctly. (thanks to
4820 * More progress has been made toward bootstrapping under CLISP. (thanks
4821 to Christophe Rhodes)
4822 * The fasl file format has changed again, because dynamic loading
4823 on OpenBSD (which has non-ELF object files) motivated some cleanups
4824 in the way that foreign symbols are transformed and passed around.
4825 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4826 is no longer treated as whitespace by the reader, but instead as
4827 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4828 |A
\7fB|, instead of A as it used to.
4830 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4831 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4832 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4833 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4834 this as of 0.7.1.45, but was left out of the previous news section
4835 (thanks to Dan Barlow)
4836 * SBCL now runs on the Solaris operating system on SPARC architectures
4837 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4838 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4839 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4840 * SPARC backend cleanups, allowing builds of cores optimized for V8
4841 and V9 SPARCS, and also emission of code targeted to a particular
4842 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4844 * SBCL is closer to bootstrapping under CLISP, thanks to various
4845 fixes by Christophe Rhodes.
4846 * The fasl file format has changed again, to allow the compiler's
4847 INFO database to support symbol macros.
4848 * The user manual (in doc/) is formatted into HTML more nicely.
4849 (thanks to coreythomas)
4850 * The system is smarter about SUBTYPEP relationships, especially
4851 those involving NOT types (including types such as ATOM which are
4852 represented internally using NOT types). Thus SUBTYPEP is less
4853 likely to return (VALUES NIL NIL) in general, and in particular
4854 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4856 * The fasl file format has changed again, because the internal
4857 representation of types now includes a new slot to support the new
4858 SUBTYPEP-of-NOT-types logic.
4859 * (not a change in the main branch of SBCL, but a related prototype
4860 which can hopefully be merged into the main branch of SBCL in the
4861 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4862 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4863 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4864 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4865 dispatch macro character combinations. (thanks to Alexey Dejneka)
4866 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4867 that superficially look like logical namestrings correctly.
4868 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4870 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4871 default supplied-p) for &optional and &key arguments. (thanks to
4874 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4875 * incompatible change: The compiler is now less aggressive about
4876 tail call optimization, doing it only when (> SPACE DEBUG) or
4877 (> SPEED DEBUG). (This is an incompatible change because there are
4878 programs which relied on the old CMU-CL-style behavior to optimize
4879 away their unbounded recursion which will now die of stack overflow.)
4880 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4881 for non-GENCGC systems has been increased to 20M (since that
4882 seems much closer to the likely performance optimum for modern
4883 systems than the old 4M value was)
4884 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4885 and *DEBUG-PRINT-LEVEL*
4886 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4887 of CMU CL's support for SPARC, and various endianness and other
4888 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4889 * new syntactic sugar for the Unix command line: --load foo.bar is now
4890 an alternate notation for --eval '(load "foo.bar")'.
4892 ** The system now detects stack overflow and handles it gracefully,
4893 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4894 optimization settings. (This is a good thing in general, and
4895 its introduction in this version should be particularly timely
4896 for anyone whose code fails because of suppression of tail
4898 ** The system now hunts for the C variable "environ" in a more
4899 devious way, to avoid segfaults when the C library version differs
4900 between compile time and run time. (thanks to Christophe Rhodes)
4901 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4902 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4903 ** The compiler no longer issues bogus style warnings for undefined
4904 classes in the same source file as the DEFCLASSes which defined
4905 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4907 ** fixes in CONDITION class precedence list for undefined function
4908 errors (thanks to Alexei Dejneka)
4909 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4910 correctly. (thanks to Dan Barlow)
4911 ** portability fixes aiming at bootstrapping under CLISP (thanks
4912 to Dave McDonald and Christophe Rhodes)
4913 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4914 ** fixes in type translation and and type inference (thanks to
4916 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4917 ** various fixes in the new ports (thanks to Dan Barlow)
4918 * several changes related to debugging:
4919 ** suppression of tail recursion, as noted above
4920 ** stack overflow detection, as noted above
4921 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4922 is now the default. (For some time encapsulation has been more
4923 reliable than the breakpoint-based :ENCAPSULATE NIL
4924 implementation, at least on X86 systems; and I just noticed that
4925 encapsulation also seems closer to the spirit of the ANSI
4928 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4930 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4931 up properly again. (There was a packaging bug in 0.7.0 which
4932 left their definitions in SB-SYS::LOAD-FOREIGN and
4933 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4934 vital for most things which interface to C-level interfaces,
4935 like extensions working with sockets or databases or
4936 Perl-compatible regexes or whatever, and the need to fix
4937 this bug is the main reason that 0.7.1 was released so
4939 ** DEFGENERIC is now choosier about the methods it redefines, so that
4940 reLOADing a previously-LOADed file containing DEFGENERICs does
4941 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4942 cycle now works as it should. (thanks to Alexey Dejneka)
4943 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4944 fixed by Christophe Rhodes. (He actually submitted this patch
4945 months ago, and I delayed until after 0.7.0.)
4946 ** Bug 111 (internal compiler confusion about runtime checks on
4947 FUNCTION types) was fixed by Alexey Dejneka.
4948 * Some internal cleanups (getting rid of variables which aren't
4949 needed now that the byte interpreter is gone) caused the fasl
4950 file format number to change again.
4952 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4953 * major incompatible change: The default fasl file extension, i.e. the
4954 default extension for files produced by COMPILE-FILE, has changed
4955 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4957 ** There are many changes in the implementation of the compiler.
4958 SBCL is now essentially a compiler-only implementation of ANSI
4959 Common Lisp. EVAL still "interprets" a few special cases, but
4960 almost all the interesting cases are handled by creating
4961 a LAMBDA expression, calling COMPILE on it, then calling
4962 FUNCALL on the result.
4963 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4964 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4965 Since the code is newer, there might still be some new bugs
4966 (though not as many as before Martin Atzmueller's fixes:-). But
4967 the new code is substantially simpler and clearer, and hopefully
4968 any remaining bugs will be simpler, less fundamental, and more
4969 fixable then the bugs in the old code.
4970 ** The revised compiler is still a little unsteady on its feet.
4972 *** The debugging information it produces (particularly the names
4973 of FUNCTION objects) is sometimes much less useful than what
4974 the old compiler produced.
4975 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4976 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4977 within a MACROLET) has been temporarily weakened.
4978 ** There are new compiler optimizations for various functions:
4979 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4980 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4981 *** the math functions TRUNCATE, FLOOR, and CEILING
4982 *** the function-of-all-trades COERCE
4983 Mostly these should be transparent, but there's one
4984 potentially-annoying problem (bug 117): when the compiler
4985 inline-expands a function and does type analysis on the result,
4986 it can create control paths which have type mismatches, and
4987 when it can't prove that those control paths aren't taken,
4988 it will issue WARNINGs about the type mismatches. This is
4989 a particular problem in practice for the new sequence functions.
4990 It's not clear how this should be fixed, and for now, a
4991 workaround is given in the entry for 117 in the BUGS file.
4992 ** (Because of the interaction between the two previous items --
4993 occasional inlining problems and new inline expansions -- some
4994 of the new sequence function optimizations won't really kick in
4995 completely until debugging information, and then inlining, are
4996 straightened out in some future version.)
4997 * minor incompatible changes:
4998 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4999 DIRECTORY no longer implicitly promotes NIL slots of its
5000 pathname argument to :WILD. In particular, when you ask for the
5001 contents of a directory (which you used to be able to do without
5002 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5003 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5004 ** changes in behavior that ANSI explicitly defines to be
5005 implementation dependent:
5006 *** The new compiler-only implementation still conforms with ANSI,
5007 but acts a little different than before. Besides the obvious
5008 changes in performance tradeoffs (that the cost per form passed
5009 to EVAL has gone up, and the cost per form executed by EVAL
5010 has gone down), the behavior of the system changes a little
5011 because there are no longer any interpreted function objects.
5012 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5013 e.g. doing COMPILE on the output of interactive DEFUN is
5015 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5017 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5018 has changed from (:CL) to NIL.
5019 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5020 e.g. #\Newline and #\Tab, don't have names specified in the
5021 ANSI Common Lisp standard, is now based on their ASCII symbolic
5022 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5023 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5024 are no longer used for output.
5025 ** changes in internal implementation constants:
5026 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5027 4 million. (If your application spends a lot of time GCing and
5028 you have a lot of RAM, you might want to experiment with
5029 increasing it even more.)
5030 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5031 However, almost all old code should still continue to work without
5032 immediate update, as SB-C-CALL is now a (deprecated) nickname
5034 ** Old operator names in the style DEF-FOO are now deprecated in
5035 favor of new corresponding names DEFINE-FOO, for consistency with
5036 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5037 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5038 internal symbols, but a few supported extensions like
5039 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5040 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5041 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5042 etc. as you get deeper into recursive calls to the debugger
5043 command loop, instead of the old "5]", "5]]", "5]]]"
5044 sequence. (I was motivated to do this when squabbles between
5045 ILISP and SBCL left me very deeply nested in the debugger. In the
5046 short term, this change will probably provoke more ILISP/SBCL
5047 squabbles, but hopefully it will be an improvement in the long run.)
5048 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5049 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5050 function, since declaiming return types involving aliens is
5051 (1) annoyingly messy to do by hand and (2) vital to efficient
5052 compilation of code which calls such functions.
5053 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5054 longer reexported by the SB-EXT package. They're solely useful
5055 for alien code, so it seems more logical that you should get
5056 them from the SB-ALIEN package, not in SB-EXT.
5057 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5058 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5059 features. Instead, the code that they used to control is always
5060 built into the system.
5061 * many other bug fixes
5062 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5063 advantage of the new EVAL-WHEN stuff and to clean them up in
5064 general, and they are now more ANSI-compliant in a number of
5065 ways. Martin Atzmueller is responsible for a lot of this.
5066 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5068 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5069 *** correct ERROR type for various file operations
5070 *** some fixes for Lisp streams
5071 *** DEFMETHOD syntax checking
5072 *** changing old weird representation of debug information as
5073 strings (which, among their other deficiencies, don't transform
5074 correctly when you rename packages, and don't change their
5075 print representation when you change things like *PACKAGE*
5076 and *PRINT-LENGTH*) to symbols and lists of symbols
5077 He also made several improvements and fixed several bugs in DESCRIBE.
5078 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5080 *** misbehavior of WRITE-STRING/WRITE-LINE
5081 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5082 and several other LOOP problems as well
5083 *** DIRECTORY when similar filenames are present
5084 *** DEFGENERIC with :METHOD options
5085 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5086 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5087 *** argument ordering in FIND with :TEST option
5088 *** mishandled package designator argument in APROPOS-LIST
5089 *** various problems in the backquote readmacro
5090 *** a bug in APROPOS
5091 *** probably some others that I'm not describing very well here,
5092 since the CVS log documents them by reference to sbcl-devel
5093 messages, and the SourceForge archives aren't working well.:-(
5094 ** Dan Barlow improved the Alpha port (and is making progress on the
5095 PPC port, for those of you who think different).
5096 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5097 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5098 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5099 continues to work on the SPARC port (for those of you in a position
5100 to look down upon our little PC-compatible boxes from a great height).
5101 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5102 and uses that copy, rather than the current dynamic value, when
5103 it's trying to decide whether to truncate output. Thus e.g.
5104 (let ((*print-lines* 50))
5105 (pprint-logical-block (stream nil)
5107 (let ((*print-lines* 8))
5108 (print (aref possiblybigthings i) stream)))))
5109 should now truncate the logical block only at 50 lines, instead of
5110 often truncating it at 8 lines, as it did before.
5111 * The doc/cmucl/ directory, containing old CMU CL documentation
5112 from the time of the fork, is no longer part of the base system.
5113 SourceForge has shut down its anonymous FTP service, and with it
5114 my original plan for distributing the old CMU CL documentation
5115 there. For now, if you need these files you can download an old
5116 SBCL source release and extract them from it.
5117 * The fasl file version number changed again, for dozens of reasons,
5118 some of which are apparent above.
5120 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5121 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5122 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5123 patch, so that DISASSEMBLE output is much nicer.
5124 * The code in the SB-PROFILE package now seems reasonably stable.
5125 I still haven't decided what the final interface should look like
5126 (I'd like PROFILE to interact cleanly with TRACE, since both
5127 facilities use function encapsulation) but if you have a need
5128 for profiling now, you can probably use it successfully with
5129 the current CMU-CL-style interface.
5130 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5131 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5132 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5133 link now returns the dangling link itself, and for similar
5134 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5135 link itself. (In these cases the old code signalled an error and
5136 looped endlessly, respectively.) Thus, DIRECTORY now works even
5137 in the presence of dangling and cyclic symbolic links.
5138 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5139 is now a supported extension again, since the consensus on
5140 sbcl-devel was that it can be useful for ordinary development
5141 work, not just for debugging SBCL itself.
5142 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5143 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5144 that currently-defined functions might be redefined later with
5145 different return types.
5146 * Hash tables can be printed readably, as inspired by CMU CL code
5147 of Eric Marsden and SBCL code of Martin Atzmueller.
5148 * better error handling in CLOS method combination, thanks to
5149 Martin Atzmueller porting Pierre Mai's CMU CL patches
5150 * more overflow fixes for >16Mbyte I/O buffers
5151 * A bug in READ has been fixed, so that now a single Ctrl-D
5152 character suffices to cause end-of-file on character streams.
5153 In particular, now you only need one Ctrl-D at the command
5154 line (not two) to exit SBCL.
5155 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5157 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5158 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5159 does the right thing.
5160 * The implementation of some type tests, especially for CONDITION
5161 types, is now tidier and maybe faster, due to CMU CL code
5162 originally by Douglas Crosher, ported by Martin Atzmueller.
5163 * Some math functions have been fixed, and there are new
5164 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5165 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5166 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5167 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5168 likely to be built into sbcl-0.7.0.)
5169 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5170 CL, ported to SBCL by Martin Atzmueller)
5171 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5172 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5173 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5174 * There's a new slam.sh hack to shorten the edit/compile/debug
5175 cycle for low-level changes to SBCL itself, and a new
5176 :SB-AFTER-XC-CORE target feature to control the generation of
5177 the after-xc.core file needed by slam.sh.
5178 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5179 COMPILE-FILE is no longer supported, so that now every function
5180 gets an entry point, so that block compilation looks a little
5181 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5182 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5183 returns the number of bytes consed since the system started,
5184 rather than the number consed since the first time the function
5185 was called. (The new definition parallels ANSI functions like
5186 CL:GET-INTERNAL-RUN-TIME.)
5187 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5188 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5189 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5190 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5191 * Fasl file version numbers are now independent of the target CPU,
5192 since historically most system changes which required version
5193 number changes have affected all CPUs equally. Similarly,
5194 the byte fasl file version is now equal to the ordinary
5197 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5198 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5199 is no longer recognized. I apologize for this, because it was
5200 listed in SB-EXT as a supported extension, but I found that
5201 its existing behavior was poorly specified, as well as incorrectly
5202 specified, and it looked like too much of a mess to straighten it
5203 out. I have enough on my hands trying to get ANSI stuff to work..
5204 * many patches ported from CMU CL by Martin Atzmueller, with
5205 half a dozen bug fixes in pretty-printing and the debugger, and
5206 half a dozen others elsewhere
5207 * fixed bug 13: Floating point infinities are now supported again.
5208 They might still be a little bit flaky, but thanks to bug reports
5209 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5210 as flaky as they were.
5211 * The --noprogrammer command line option is now supported. (Its
5212 behavior is slightly different in detail from what the old man
5213 page claimed it would do, but it's still appropriate under the
5214 same circumstances that the man page talks about.)
5215 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5216 are now supported, and enabled by default. Thus, the compiler can
5217 handle many floating point and complex operations much less
5218 inefficiently. (Thus e.g. you can implement a complex FFT
5220 * The compiler now detects type mismatches between DECLAIM FTYPE
5221 and DEFUN better, and implements CHECK-TYPE more correctly, and
5222 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5223 thanks to patches from Martin Atzmueller.
5224 * various fixes to make the cross-compiler more portable to
5225 ANSI-conforming-but-different cross-compilation hosts (notably
5226 Lispworks for Windows, following bug reports from Arthur Lemmens)
5227 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5228 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5229 fixed thanks to Pierre Mai's CMU CL patches.
5230 * fixes to keep the system from overflowing internal counters when
5231 it tries to use i/o buffers larger than 16M bytes
5232 * fixed bug 45a: Various internal functions required to support
5233 complex special functions have been merged from CMU CL sources.
5234 (When I was first setting up SBCL, I misunderstood a compile-time
5235 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5236 * improved support for type intersection and union, fixing bug 12
5237 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5238 more obscure bugs as well
5239 * some steps toward byte-compiling non-performance-critical
5240 parts of the system, courtesy of patches from Martin Atzmueller
5241 * Christophe Rhodes has made some debian packages of sbcl at
5242 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5243 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5244 stable, but are nonetheless usable. When he's ready, I'd be happy
5245 to add them to the SourceForge "File Releases" section. (And if
5246 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5247 * new fasl file format version number (because of changes in
5248 internal representation of (OR ..) types to accommodate the new
5249 support for (AND ..) types, among other things)
5251 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5252 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5254 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5256 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5257 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5258 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5259 * DESCRIBE now works on structure objects again.
5260 * Most function call argument type mismatches are now handled as
5261 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5262 know whether the function will be redefined before the call is
5263 executed. (The compiler could flag local calls with full WARNINGs,
5264 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5265 it doesn't keep track of enough information to know whether calls
5266 are local in this sense.)
5267 * Compiler output is now more verbose, with messages truncated
5268 later than before. (There should be some supported way for users
5269 to override the default verbosity, but I haven't decided how to
5270 provide it yet, so this behavior is still controlled by the internal
5271 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5272 src/compiler/ir1util.lisp.)
5273 * Fasl file format version numbers have increased again, because
5274 support for the Gray streams extension changes the layout of the
5275 system's STREAM objects.
5276 * The Gray subclassable streams extension now works, thanks to a
5277 patch from Martin Atzmueller.
5278 * The full LOAD-FOREIGN extension (not just the primitive
5279 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5280 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5281 but like most other programs, it defaults to copying the Unix
5282 environment from the original process instead of starting the
5283 new process in an empty environment.
5284 * Extensions which manipulate the Unix environment now support
5285 an :ENVIRONMENT keyword option which doesn't smash case or
5286 do other bad things. The CMU-CL-style :ENV option is retained
5287 for porting convenience.
5288 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5289 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5291 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5293 * A patch from Martin Atzmueller seems to have solved the SIGINT
5294 problem, and as far as we know, signal-handling now works cleanly.
5295 (If you find any new bugs, please report them!)
5296 * The system no longer defaults Lisp source file names to types
5297 ".l", ".cl", or ".lsp", but only to ".lisp".
5298 * The compiler no longer uses special default file extensions for
5299 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5300 seems to expect a single default extension for all compiled code,
5301 and there's no compelling reason to try to stretch the standard
5302 to allow two different extensions.) Instead, byte-compiled files
5303 default to the same extension as native-compiled files.
5304 * Fasl file format version numbers have increased again, because
5305 a rearrangement of internal implementation packages made some
5306 dumped symbols in old fasl files unreadable in new cores.
5307 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5308 many fewer weird special cases.
5309 * Bug #17 (differing COMPILE-FILE behavior between logical and
5310 physical pathnames) has been fixed, and some related misbehavior too,
5311 thanks to a patch from Martin Atzmueller.
5312 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5313 by Tim Moore, ported to SBCL by Martin Atzmueller.
5314 * Martin Atzmueller fixed several filesystem-related problems,
5315 including bug #36, in part by porting CMU CL patches, which were
5316 written in part by Paul Werkowski.
5317 * More compiler warnings in src/runtime/ are gone, thanks to
5318 more patches from Martin Atzmueller.
5319 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5322 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5324 * DESCRIBE now works on CONDITION objects.
5325 * The debugger now handles errors which arise when trying to print
5326 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5328 * The build system now uses an additional file, customize-target-features.lisp,
5329 to allow local modifications to the target *FEATURES* list. (The point of
5330 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5331 debugging features enabled, without having to worry about propagating it
5332 into everyone's system when I do a "cvs update".) When no
5333 customize-target-features.lisp file exists, the target *FEATURES* list
5334 should be constructed the same way as before.
5335 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5336 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5337 warn about behavior which is undefined under the ANSI spec. Note: This
5338 is specified by ANSI, but it's not very popular with programmers.
5339 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5340 macro in the SBCL sources for an example of a workaround which you
5341 might use to make portable ANSI-standard code which does what you want.
5342 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5343 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5344 when it's used as a non-toplevel form. (This is required in order
5345 to implement the DEFCONSTANT-EQX macro.)
5346 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5347 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5348 funny things, due to bugs in the implementation of EVAL-WHEN
5349 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5350 non-toplevel DEFCONSTANTs are uncommon.)
5351 * The core file version number and fasl file version number have been
5352 incremented, because the old noncompliant DEFCONSTANT behavior involved
5353 calling functions which no longer exist, and because I also took the
5354 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5355 * fixed bug 1 (error handling before read-eval-print loop starts), and
5356 redid debugger restarts and related debugger commands somewhat while
5358 ** The QUIT debugger command is gone, since it did something
5359 rather different than the SB-EXT:QUIT command, and since it never
5360 worked properly outside the main toplevel read/eval/print loop.
5361 Invoking the new TOPLEVEL restart provides the same functionality.
5362 ** The GO debugger command is also gone, since you can just invoke
5363 the CONTINUE restart directly instead.
5364 ** The TOP debugger command is also gone, since it's redundant with the
5365 FRAME 0 command, and since it interfered with abbreviations for the
5367 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5369 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5370 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5371 some porting work by Martin Atzmueller)
5372 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5373 with a boatload of patches which he ported to SBCL. Now that those
5375 ** The system tries to make sure that its low-priority messages
5376 are prefixed by semicolons, to help people who like to use
5377 syntax highlighting in their ILISP buffer. (This patch
5378 was originally due to Raymond Toy.)
5379 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5380 patches originally written by Raymond Toy.
5381 ** The compiler understands coercion between single-value and
5382 multiple-VALUES type expressions better, getting rid of some very
5383 weird behavior, thanks to patches originally by Robert MacLachlan
5384 and Douglas Crosher.
5385 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5386 lambda lists, thanks to a patch originally by Pierre Mai.
5387 ** The system no longer bogusly warns about "abbreviated type
5389 ** The compiler gets less confused by inlining and RETURN-FROM,
5390 thanks to some patches originally by Tim Moore.
5391 ** The system no longer hangs when dumping circular lists to fasl
5392 files, thanks to a patch originally from Douglas Crosher.
5393 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5394 undefined function error.
5395 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5396 in structure slot initforms) for now, documented workaround instead:-|
5397 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5398 * fixed bug 5: added stubs for various Gray stream functions called
5399 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5400 installed, at least appropriate type errors are generated
5401 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5402 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5403 consistently in DEFMETHOD forms.
5404 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5405 it doesn't seem to affect SBCL after all
5406 * The C runtime system now builds with better optimization and many
5407 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5409 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5411 * The system is now under CVS at SourceForge (instead of the
5412 CVS repository on my home machine).
5413 * The new signal handling code has been tweaked to treat register
5414 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5415 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5416 downstream, e.g. in debug-int.lisp, has implicit dependencies
5417 on the unsignedness of integer representation of machine words,
5418 and that caused the system to bomb out with infinite regress
5419 when trying to recover from type errors involving signed values,
5420 e.g. (BUTLAST '(1 2 3) -1).)
5421 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5422 (This was one of the bugs Peter Van Eynde reported back in July.)
5423 * The system now uses code inspired by Colin Walters' O(N)
5424 implementation of MAP (from the cmucl-imp@cons.org mailing
5425 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5426 inline the MAP operation, and there is more than one
5427 sequence argument to the MAP call (so that it can't just
5428 do ETYPECASE once and for all based on the type of the
5429 single sequence argument). (The old non-inline implementation
5430 of the general M-argument sequence-of-length-N case required
5431 O(M*N*N) time when any of the sequence arguments were LISTs.)
5432 * The QUIT :UNIX-CODE keyword argument has been renamed to
5433 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5434 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5436 * Raymond Wiker's patches to port dynamic loading from Linux to
5437 FreeBSD have been added.
5438 * The BUGS file is now more nearly up to date, thanks in large part
5439 to Martin Atzmueller's review of it.
5440 * The debugger now flushes standard output streams before it begins
5441 its output ("debugger invoked" and so forth).
5442 * The core version number and fasl file version number have both
5443 been incremented, because of incompatible changes in the layout
5445 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5446 used to not be called for a saved Lisp image.)
5447 * Martin Atzmueller's version of a patch to fix a compiler crash,
5448 as posted on sbcl-devel 13 September 2000, has been installed.
5449 * Instead of installing Martin Atzmueller's patch for the
5450 compiler transform for SUBSEQ, I deleted the compiler transform,
5451 and transforms for some similar consing operations.
5452 * A bug in signal handling which kept TRACE from working on OpenBSD
5454 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5455 away by constant folding
5456 * The system now defines its address space constants in one place
5457 (in the Lisp sources), and propagates them automatically elsewhere
5458 (through GENESIS and the sbcl.h file). Therefore, patching the
5459 address map is less unnecessarily tedious and error-prone. The
5460 Lisp names of address space constants have also been systematized.
5461 * CVS tags like dollar-Header-dollar have been removed from
5462 the sources, because they have never saved me trouble and
5463 they've been source of trouble working with patches and other
5464 diff-related operations.
5465 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5466 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5468 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5470 * The system has been ported to OpenBSD.
5471 * The system now compiles with a simple "sh make.sh" on the systems
5472 that it's supported on. I.e., now you no longer need to tweak
5473 text in the target-features.lisp-expr and symlinks in src/runtime/
5474 by hand, the make.sh takes care of it for you.
5475 * The system is no longer so grossly inefficient when compiling code
5476 involving vectors implemented as general (not simple) vectors (VECTOR T),
5477 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5478 which dares to use the various sequence functions on non-simple
5479 vectors, takes less of a performance hit.
5480 * There is now a primitive type predicate VECTOR-T-P
5481 to test for the (VECTOR T) type, so that e.g.
5482 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5483 can now be compiled with some semblance of efficiency. (The old code
5484 turned the type declaration into a full call to %TYPEP at runtime!)
5485 * AREF on (VECTOR T) is still not fast, since it's still compiled
5486 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5487 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5488 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5489 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5490 without making full calls to SUBTYPEP at runtime.
5491 (Some analogous efficiency issues for non-simple vectors specialized to
5492 element types other than T, or for non-simple multidimensional arrays,
5493 have not been addressed. They could almost certainly be handled the
5494 same way if anyone is motivated to do so.)
5495 * The changes in array handling break binary compatibility, so
5496 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5497 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5498 instead of (VALUES T T).
5499 * By following the instructions that Dan Barlow posted to sbcl-devel
5500 on 2 July 2000, I was able to enable primitive dynamic object
5501 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5502 functionality is not implemented (since it calls ld to resolve
5503 library references automatically, requiring RUN-PROGRAM for its
5504 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5505 try to resolve library references) is now supported.
5506 * The system now flushes the standard output streams when it terminates,
5507 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5508 them at several other probably-convenient times, e.g. in each pass of
5509 the toplevel read-eval-print loop, and after evaluating a form given
5510 as an "--eval" command-line option. (These changes were motivated by a
5511 discussion of stream flushing issues on cmucl-imp in August 2000.)
5512 * The source transform for TYPEP of array types no longer assumes
5513 that an array whose element type is a not-yet-defined type
5514 is implemented as an array of T, but instead punts, so that the
5515 type will be interpreted at runtime.
5516 * There is now some support for cross-compiling in make.sh: each of
5517 the phases of make.sh has its own script. (This should be transparent
5518 to people doing ordinary, non-cross-compile builds.)
5519 * Since my laptop doesn't have hundreds of megabytes of memory like
5520 my desktop machine, I became more motivated to do some items on
5521 my to-do list in order to reduce the size of the system a little:
5522 ** Arrange for various needed-only-at-cold-init things to be
5523 uninterned after cold init. To support this, those things have
5524 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5525 symbols with such names are now uninterned after cold init).
5526 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5527 fasl files for cold load.
5528 ** Remove the old compiler structure pooling code (which used to
5529 be conditional on the target feature :SB-ALLOC) completely.
5530 ** Redo the representation of some data in cold init to be more compact.
5531 (I also looked into supporting byte compiled code at bootstrap time,
5532 which would probably reduce the size of the system a lot, but that
5533 looked too complicated, so I punted for now.)
5534 * The maximum signal nesting depth in the src/runtime/ support code has
5535 been reduced from 4096 to 256. (I don't know any reason for the very
5536 large old value. If the new smaller value turns out to break something,
5537 I'll probably just bump it back up.)
5538 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5540 * Many, many bugs reported by Peter Van Eynde have been added to
5541 the BUGS list; some have even been fixed.
5542 * While enabling dynamic object file loading, I tried to make the
5543 code easier to understand, renaming various functions and variables
5544 with less ambiguous names, and changing some function calling
5545 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5546 * While trying to figure out how to do the OpenBSD port, I tried to
5547 clean up some of the code in src/runtime/. In particular, I dropped
5548 support for non-POSIX signal handling, added various comments,
5549 tweaked the code to reduce the number of compilation warnings, and
5550 renamed some files to increase consistency.
5551 * To support the new automatic configuration functionality in make.sh,
5552 the source file target-features.lisp-expr has been replaced with the
5553 source file base-target-features.lisp-expr and the machine-generated
5554 file local-target-features.lisp-expr.
5555 * fixed a stupid quoting error in make.sh so that using CMU CL
5556 "lisp -batch" as cross-compilation host works again
5558 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5560 * DESCRIBE no longer tries to call itself recursively to describe
5561 bound/fbound values, so that it no longer fails on symbols which are
5562 bound to themselves (like keywords, T, and NIL).
5563 * DESCRIBE now works on generic functions.
5564 * The printer now prints less-screwed-up representations of closures
5565 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5566 * A private symbol is used instead of the :EMPTY keyword previously
5567 used to mark empty slots in hash tables. Thus
5568 (DEFVAR *HT* (MAKE-HASH-TABLE))
5569 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5570 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5571 now does what ANSI says that it should. (You can still get
5572 similar noncompliant behavior if bang on the hash table
5573 implementation with all the symbols you get back from
5574 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5575 This breaks binary compatibility, since tests for equality to
5576 :EMPTY are wired into things like the macroexpansion of
5577 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5579 * There's now a minimal placeholder implementation for CL:STEP,
5580 as required by ANSI.
5581 * An obscure bug in the interaction of the normal compiler, the byte
5582 compiler, inlining, and structure predicates has been patched
5583 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5584 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5586 * Missing ordinary arguments in a macro call are now detected even
5587 when the macro lambda list contains &KEY or &REST.
5588 * The debugger no longer complains about encountering the top of the
5589 stack when you type "FRAME 0" to explicitly instruct it to go to
5590 the top of the stack. And it now prints the frame you request even
5591 if it's the current frame (instead of saying "You are here.").
5592 * As specified by ANSI, the system now always prints keywords
5593 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5595 * The default initial SIZE of HASH-TABLEs is now smaller.
5596 * Type information from CLOS class dispatch is now propagated
5597 into DEFMETHOD bodies, so that e.g.
5598 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5600 is now basically equivalent to
5601 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5602 (DECLARE (TYPE SINGLE-FLOAT X))
5604 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5605 operation, without having to do run-time type dispatch.
5606 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5607 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5608 * Since I don't seem to be making big file reorganizations very often
5609 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5610 is overflowing my ability to conveniently back them up), I've finally
5611 checked the system into CVS. (The CVS repository is on my home system,
5612 not at SourceForge -- putting it on SourceForge might come later.)
5613 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5614 high-level GC-NOTIFY-FOO functions send their output. (There's
5615 still very little control of where low-level verbose GC functions
5616 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5617 less than it used to -- the GC-NOTIFY-FOO functions are now under
5618 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5619 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5620 in only one place in the source code, and propagates it automatically
5621 everywhere that it's needed. Thus e.g. when I bump the version from
5622 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5623 * The C source files now include boilerplate legalese and documentation
5624 at the head of each file (just as the Lisp source files already did).
5625 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5626 to his page will be replaced with a link to his new CLiki service.
5628 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5630 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5631 * The build process now looks for GNU make under the default name "gmake",
5632 instead of "make" as it used to. If GNU make is not available as "gmake"
5633 on your system, you can change this default behavior by setting the
5634 GNUMAKE environment variable.
5635 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5636 can build without error under CMU CL.
5638 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5640 * There is now a partial SBCL user manual (with some new text and some
5641 text cribbed from the CMU CL manual).
5642 * The beginnings of a profiler have been added (starting with the
5643 CMU CL profiler and simplifying and cleaning up). Eventually the
5644 main interface should be through the TRACE macro, but for now,
5645 it's still accessed through vaguely CMU-CL-style functions and macros
5646 exported from the package SB-PROFILE.
5647 * Some problems left over from porting CMU CL to the new
5648 cross-compilation bootstrap process have been cleaned up:
5649 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5650 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5651 part when getting rid of the compiler *BACKEND* stuff.)
5652 ** The value of *NULL-TYPE* was screwed up, because it was
5653 being initialized before the type system knew the final
5654 definition of the 'NULL type. This screwed up several key
5655 optimizations in the compiler, causing inefficiency in all sorts
5656 of places. (I found it because I wanted to understand why
5657 GET-INTERNAL-RUN-TIME was consing.)
5658 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5659 PROCLAIM FTYPE information. Unfortunately this broke binary
5660 compatibility again, since now the forms output by DEFGENERIC
5661 to refer to functions which didn't exist in 0.6.3.
5662 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5663 can use the new (as of 0.6.3) transform for SOME into MAP into
5665 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5666 values to (INTEGER 0 1000000), so that the time code will no longer
5667 occasionally get blown up by Linux returning 1000000 microseconds
5668 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5669 its output conform to the ANSI spec. (Alas, this makes its output
5670 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5671 * A full call to MAP NIL with a single sequence argument no longer conses.
5672 * fixes to problems pointed out by Martin Atzmueller:
5673 * The manual page no longer talks about multiprocessing as though
5674 it were currently supported.
5675 * The ILISP support patches have been removed from the distribution,
5676 because as of version 5.10.1, ILISP now supports SBCL without us
5677 having to maintain patches.
5678 * added a modified version of Raymond Toy's recent CMU CL patch for
5679 EQUALP comparison of HASH-TABLE
5681 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5683 * The system still can't cross-compile itself with
5684 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5685 entails), but at least it can compile more of itself that way
5686 than it used to be able to, and various buglets which were uncovered
5687 by trying to cross-compile itself that way have now been fixed.
5688 * This release breaks binary compatibility again. This time
5689 at least I've incremented the FASL file format version to 2, so that the
5690 problem can be detected reliably instead of just causing weird errors.
5691 * various new style warnings:
5692 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5693 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5694 ** using the lexical binding of a variable named in the *FOO* style
5695 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5696 as specified by ANSI.
5697 * *RANDOM-STATE* is no longer automatically initialized from
5698 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5699 default behavior of the system is to repeat its behavior every time
5700 it's run. If you'd like to change this behavior, you can always
5701 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5702 old convention there was no comparably easy way to get the system to
5703 repeat its behavior every time it was run.
5704 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5705 FTYPE declarations has been removed, in favor of their ANSI
5706 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5707 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5708 the types of their sequence arguments can be determined at compile time.
5709 This is done through a new open code expansion for MAP which eliminates
5710 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5711 argument types can be determined at compile time.
5712 * The optimizer now transforms COERCE into an identity operation when it
5713 can prove that the coerced object is already of the correct type. (This
5714 can be a win for machine generated code, including the output of other
5715 optimization transforms, such as the MAP transform above.)
5716 * Credit information has been moved from source file headers into CREDITS.
5717 * Source file headers have been made more standard.
5718 * The CASE macro now compiles without complaining even when it has
5721 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5723 * (Note that the way that the PCL macroexpansions were rewritten
5724 to accommodate the change in DEFGENERIC below breaks binary
5725 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5726 not run under sbcl-0.6.2. Once we get out of alpha releases,
5727 i.e. hit release 1.0.0, we'll probably try to maintain binary
5728 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5729 and sbcl-1.4.4. Until then, however, it might be fairly common
5730 for maintenance releases to break binary compatibility.)
5731 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5733 * The reporting of unhandled signals has been changed to print some
5734 explanatory text as well as the report form. (Previously only
5735 the report form was printed.)
5736 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5737 it defines, so that the compiler no longer issues undefined function
5738 warnings for compiled-but-not-yet-loaded generic functions.
5739 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5740 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5741 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5742 section of the ANSI spec are supported.
5743 * The "" nickname for the "KEYWORD" package has been removed.
5744 The reader still handles symbol tokens which begin with a package marker
5745 as keywords, but it doesn't expose its mechanism for doing so in the
5746 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5747 * The system now issues STYLE-WARNINGs for contradictory TYPE
5748 proclamations. (Warnings for contradictory FTYPE proclamations would
5749 be nice too, but those can't be done usefully unless the type system
5750 is made smarter about FUNCTION types.)
5751 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5752 systematized, so that "*target-*.lisp is supposed to exist only on the
5753 target and imply that there's a related file which exists on the
5754 host, and *host-*.lisp is supposed to exist only on the host and imply
5755 that there's a related file which exists on the target. This involves a
5756 lot of renaming. Hopefully the acute confusion caused by the renaming
5757 will be justified by the reduction in chronic confusion..
5758 ** runtime-type.lisp -> early-target-type.lisp
5759 ** target-type.lisp -> late-target-type.lisp
5760 ** early-host-format.lisp -> early-format.lisp
5761 ** late-host-format.lisp -> late-format.lisp
5762 ** host-error.lisp -> misc-error.lisp
5763 ** early-error.lisp -> early-target-error.lisp
5764 ** late-error.lisp -> late-target-error.lisp
5765 ** host-defboot.lisp -> early-defboot.lisp
5766 ** code/misc.lisp -> code/target-misc.lisp
5767 ** code/host-misc.lisp -> code/misc.lisp
5768 ** code/numbers.lisp -> code/target-numbers.lisp
5769 ** code/early-numbers.lisp -> numbers.lisp
5770 ** early-host-type.lisp -> early-type.lisp
5771 ** late-host-type.lisp -> late-type.lisp
5772 ** host-typep.lisp -> typep.lisp
5773 ** load.lisp -> target-load.lisp
5774 ** host-load.lisp -> load.lisp
5775 ** host-disassem.lisp -> disassem.lisp
5776 ** host-insts.lisp -> insts.lisp
5777 ** byte-comp.lisp -> target-byte-comp.lisp
5778 ** host-byte-comp.lisp -> byte-comp.lisp
5779 ** host-signal.lisp -> signal.lisp
5780 ** host-defstruct.lisp -> defstruct.lisp
5781 ** late-target-type.lisp -> deftypes-for-target.lisp
5782 Furthermore, several other previously target-only files foo.lisp (e.g.
5783 hash-table.lisp and random.lisp) have been split into a target-and-host
5784 foo.lisp file and a target-only target-foo.lisp file, with their key type
5785 definitions in the target-and-host part, so that the cross-compiler will
5786 know more about target types.
5787 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5788 gone away. In their place are various *BACKEND-FOO* variables
5789 corresponding to the slots of the old structure.
5790 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5791 into the target SBCL has been fixed.
5792 * The chill.lisp system for loading cold code into a running SBCL
5794 * Support for the CMU CL "scavenger hook" extension has been removed.
5795 (It was undocumented and unused in the CMU CL sources that SBCL was
5796 derived from, and stale in sbcl-0.6.1.)
5797 * Various errors in the cross-compiler type system were detected
5798 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5799 (enabling various consistency checks). Many of them were fixed,
5800 but some hard problems remain, so the compiler is back to
5801 running without *TYPE-SYSTEM-INITIALIZED* for now.
5802 * As part of the cross-compiler type system cleanup, I implemented
5803 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5804 * I have started adding UNCROSS calls throughout the type system
5805 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5806 on cross-compiler input files will be able to go away, and various
5808 * CONSTANTP now returns true for quoted forms (as explicitly required
5811 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5813 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5814 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5815 (MAKE-LIST -1). In the longer term, it ought to become true
5816 that declarations are assertions even at SAFETY 1. For now, it's not
5817 quite true even at SAFETY 3, but it's at least more nearly true..
5818 (Note that this change seems to increases the size of the system by
5819 O(5%) and to decrease the speed of the compiler by 20% or more.)
5820 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5821 for the problem of printing dozens of lines of distracting information
5822 about low-level system machinery as part of the top stack frame
5823 on entry to the debugger when an undefined function was called.
5824 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5825 is not reset to COMMON-LISP-USER.
5826 * Compilation of stuff related to dyncount.lisp has been made conditional
5827 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5828 smaller. The various dyncount-related symbols have been moved into
5829 a new "SB-DYNCOUNT" package.
5830 * tty-inspect.lisp has been renamed to inspect.lisp.
5831 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5832 feature has gone away. (When we eventually port to other flavors of
5833 libc and/or Unix, we'll try to make the differences between flavors
5834 invisible at the user level.)
5835 * Various other *FEATURES* tags, and/or their associated conditionals,
5836 have been removed if obsolescent, or given better documentation, or
5837 sometimes given more-mnemonic names.
5839 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5841 * tidied up "make.sh" script
5842 * tidied up system directory structure
5843 * better "clean.sh" behavior
5844 * added doc/FOR-CMUCL-DEVELOPERS
5845 * many many small tweaks to output format, e.g. removing possibly-confusing
5846 trailing #\. character in DESCRIBE-INSTANCE
5847 * (EQUALP #\A 'A) no longer signals an error.
5848 * new hashing code, including EQUALP hashing
5849 * tidied up Lisp initialization and toplevel
5850 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5851 * command line argument processing
5852 * added POSIX-GETENV function to deal with Unix-ish environment variables
5853 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5854 terminating SBCL on EOF
5855 * non-verbose GC by default
5856 * There is no more "sbcl" shell script; the sbcl file is now the C
5857 runtime executable (just like CMU CL).
5858 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5860 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5861 symbol and package information as Lisp native symbol and package objects
5862 instead of strings naming symbols and strings naming packages. This way,
5863 whenever packages are renamed (as in warm init), debug information is
5864 transformed along with everything else.
5865 * tweaked the optimization policy declarations which control the building
5866 of SBCL itself. Now, among other things, the system no longer saves
5867 source location debugging information. (This helps two problems at once
5868 by reducing SBCL size and by keeping SBCL from trying to look for its
5869 sources -- which may not exist -- when reporting errors.)
5870 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5871 debugging and testing purposes
5872 * cleaned up printing, making the printer call PRINT-OBJECT for
5873 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5874 methods, giving nearly-ANSI behavior
5875 * converted almost all special variables to use *FOO* naming convention
5876 * deleted PARSE-TIME functionality, since it can be done portably
5877 * moved some files out of cold init into warm init
5878 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5880 * regularized formatting of source files
5881 * added an install.sh script
5882 * fixed ridiculous memory usage of cross-compiler by making
5883 compiler/alloc.lisp not try to do pooling unless it can hook
5884 itself into the GC of the cross-compilation host. Now the system
5885 builds nicely on my old laptop.
5886 * added :SB-ALLOC in target-features.lisp-expr
5887 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5888 was not implemented)
5889 * re-did condition handling and note reporting in the compiler. Notes
5890 are no longer handled by signalling conditions. Style warnings
5891 and warnings are handled more correctly and reported in such a way
5892 that it's easy to find one or the other in your output (so that you
5893 can e.g. figure out which of many problems caused COMPILE-FILE to
5895 * changed the severity of several compiler warnings from full WARNING
5896 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5897 compiler note reporting so that it doesn't use the condition system
5898 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5899 COMPILE-FILE command)
5900 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5901 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5902 no longer supported, since their implementation was deeply intertwingled
5903 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5904 * removed bogus "support" for compiler macros named (SETF FOO), and
5905 removed the compiler macro for SETF INFO (but only after making a fool
5906 of myself on the cmucl-imp mailing list by posting a bogus patch for
5907 DEFINE-COMPILER-MACRO..)
5908 * Compiled files containing forms which have side effects on the Lisp
5909 reader (such as DEFPACKAGE forms) are now handled more correctly.
5910 (Compiler queuing of top level lambdas has been suppressed by setting
5911 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5912 * deleted various currently-unused source files, e.g. gengc.lisp. They
5913 may be added back at some point e.g. when porting to other architectures,
5914 but until they are it's distracting to distribute them and to try to
5916 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5917 there were so many of them they're just distractions, and UNCROSS is
5918 known to be able to handle the current sources
5919 * moved PROFILE functionality into TRACE, so that it will be clear
5920 how the wrapping and unwrapping of functions when you profile them
5921 interacts with the wrapping and unwrapping of functions when you
5922 trace them. (Actually, the functionality isn't there yet, but at least
5923 the interface specification is there. Hopefully, the functionality will
5924 arrive with some future maintenance release.)
5925 * removed host-oops.lisp
5926 * changed signature of QUIT function to allow UNIX-CODE argument
5927 * fixed READ-SEQUENCE bug
5928 * tweaked verbose GC output so that it looks more like the progress
5929 output that ANSI specifies for functions like LOAD
5930 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5931 * added <http://sbcl.sourceforge.com> to the banner information printed by