1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.44:
3 * bug fix: backtracing function with &REST arguments now shows the full
4 argument list. (lp#310173)
5 * bug fix: return types for functions with complex lambda-lists are now
6 derived properly (lp#384892)
7 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
8 long string arguments slowed the compiler down to a crawl.
10 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
11 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
12 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
13 * enhancement: ALLOCATION-INFORMATION also provides the page the object
15 * enhancement: default dynamic-space size can be configured at build-time
16 without touching source, using the --dynamic-space-size argument to make.sh.
17 * enhancement: DESCRIBE recognizes symbols naming optimization policy
18 qualities, and mentions ALWAYS-BOUND declarations.
19 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
21 * enhancement: ASDF has been updated to 2.009.
22 * enhancement: the system detects known type-erros in calls better,
23 signalling a full warning about violated proclaimed FTYPEs and violations
24 of derived FTYPEs within the same file, including self-calls.
25 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
26 * optimization: constant-folding exploits numeric and character types, in
27 addition member types.
28 * optimization: numeric, character and member types that are inhabited by
29 exactly one value are tested with EQL.
30 * optimization: more conditional branches are eliminated during IR1.
31 Branches are simplified before performing if/if-conversion, and simple
32 equivalent branches (that only read the same constant or variable) are
34 * improvements to the Windows port:
35 ** change: canonical unparsing form for pathname namestrings now uses / as
36 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
37 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
38 on Windows. (thanks to Kalyanov Dmitry)
39 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
41 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
42 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
43 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
44 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
46 * bug fix: interrupts arriving during CL:OPEN caused an error.
47 * bug fix: overeager character buffering could cause input to block
48 spuriously when reading from a pipe (lp#643686)
49 * bug fix: more efficient timer expiry should avoid starvation on systems
50 where number of SIGALRMs per second is restricted. (lp#375515)
51 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
52 * bug fix: compile-times no longer scale linearly with the size of
53 quoted lists in source-code. (lp#654289)
54 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
55 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
57 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
58 an error for eg. STRUCTURE. (lp#458015)
59 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
60 (lp#613871, thanks to Roman Marynchak)
61 * bug fix: more reliable &REST list type derivation. (lp#655203)
62 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
63 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
64 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
65 also declared NOTINLINE. (lp#655581)
66 * bug fix: the compiler could attempt to emit constant left shifts of
67 greater value than n-word-bits. (lp#309063)
68 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
69 type information for the function being set. (lp#659220)
70 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
71 containing self-calls were recompiled with a new signature, and failed
72 to warn when a self-call using the old signature was left in. (lp#655126)
73 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
74 :DEFAULT when the default external had character size other than 8 bits.
76 * bug fix: derived types of functions in the same file were implicitly
77 trusted, leading to potential heap corruption when those function were
78 defined incompatibly. (lp#657499)
79 * bug fix: existing ASDF source registries are ignored when building
81 * bug fix: short-form DEFSETF checks that the second argument is a symbol
82 (lp#655824, thanks to Roman Marynchak)
83 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
84 package-lock violation was detected. (lp#660752)
85 * bug fix: the system can store different docstrings for a single function
86 under different names. (lp#661631, regression from 1.0.29.24)
87 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
89 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
90 of specified length could confuse the type derivation in unsafe code.
92 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
93 fork with multiple Lisp threads running is made on every platform,
94 not just Darwin. (lp#451111)
95 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
96 around when core was saved, which could cause undefined behaviour when the
98 * bug fix: Allow UNTRACE of functions that are no longer defined
99 (lp#667657, thanks to Attila Lendvai)
100 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
101 compile-time warning (lp#664373, thanks to Stas Boukarev)
103 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
104 * incompatible change: FD-STREAMS no longer participate in the serve-event
105 event-loop by default. (lp#316072)
106 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
107 affects streams from CL:OPEN.
108 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
109 default, but this is liable to change: applications needing serve-event
110 for socket streams should explicitly request it using :SERVE-EVENTS T
112 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
114 * enhancement: CLOS effective method functions and defclass slot typechecking
115 function now have debug names for use in backtraces and profiles.
116 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
118 * enhancement: symbols are printed using fully qualified names in several
119 error and warning messages which are often associated with package
120 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
121 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
122 thanks to Andrew Golding)
123 * bug fix: reading /proc files on Linux works. (lp#425199)
124 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
126 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
127 breaking code that tried to write the value of a printer control variable.
128 (lp#581564, thanks to Stas Boukarev)
129 * bug fix: WRITE compiler macro did not handle output stream designators
130 correctly. (lp#598374, thanks to Stas Boukarev)
131 * bug fix: better availability of names of foreign functions in backtraces
132 on Linux. (lp#626962, thanks to Stas Boukarev)
133 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
134 lp#627581, thanks to Josh Elsasser and Jim Wise)
135 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
136 thanks to Josh Elsasser)
137 * bug fix: using aliases for builtin classes as defmethod specializers
138 without adding DEFTYPEs for them works. (lp#618387)
139 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
141 * bug fix: legally dynamic-extent lists and vectors used as
142 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
143 * bug fix: inline-expansion creating references to dead lambda-variables
144 (lp#454681, thanks to Alexey Dejneka)
145 * bug fix: better error message for bogus numerical arguments to RANDOM.
146 (lp#598986, thanks to Stas Boukarev)
147 * bug fix: the compiler occasionally inlined references from incompatible
148 environments occurs. (lp#308951)
149 * bug fix: the compiler threw an error when trying to compile a local
150 function (labels or flet) known to take a specialized complex argument.
151 (not in launchpad, reported by sykopomp in #lispgames)
152 * bug fix: package-locks failed to protect against compile-time effects of
153 DEFUN when the symbol previously had a macro definition. (lp#576637)
154 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
155 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
156 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
157 * bug fix: evaluation in debugger REPL works using the global context when
158 in frames that do not have sufficient debug information.
159 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
161 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
163 * bug fix: interrupt taking longer than the requested period caused SLEEP
164 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
166 changes in sbcl-1.0.42 relative to sbcl-1.0.41
168 ** Cross-compilation host is now specified to make.sh using
169 command-line argument --xc-host=<command> instead of a positional
170 argument. (thanks to Daniel Herring)
171 ** Install location can be specified to make.sh using command-line
172 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
173 * optimization: The default implementation of
174 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
175 * enhancement: Explicit memory barrier operations are now available for use
176 by multithreaded code. See documentation for details.
177 * enhancement: Experimental support for threading on Linux/PPC.
178 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
179 * bug fix: EXPT signals an error if first argument is a zero and second
180 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
181 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
182 (lp#576594, thanks to Roman Marynchak)
183 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
184 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
186 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
187 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
188 cached, leading to many fewer expensive calls to
189 COMPUTE-APPLICABLE-METHODS.
190 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
191 CLASS argument, search for and call an appropriate optimized ctor function
193 * bug fix: WRITE always returns the correct value.
195 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
196 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
197 * bug fix: Name conflicts between symbols passed as arguments to a single
198 call to IMPORT no longer add multiple symbols with the same name to the
199 package (detectable via DO-SYMBOLS).
200 * bug fix: support building without the dlshim on darwin x86 and x86-64
202 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
204 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
205 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
207 * bug fix: linkage-table entries on PPC now no longer overflow their
208 space allocation (potentially causing crashes if they are written out
210 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
211 platforms, preventing the GC from seeing stale pointers on the control
212 stack in subsequent GCs (which would, and does, break invariants).
213 * bug fix: 32-bit unicode external formats now work on big-endian systems.
214 * bug fix: Literal characters with code points greater than about 32767
215 now work on PPC UNICODE builds.
216 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
217 high order bits are explicitly cleared out. In some contrived situations,
218 this could lead to wrong results in mixed real/complex float arithmetic.
219 * bug fix: Fix function/macro redefinition warnings when building with
220 clisp. (lp#576787, thanks to Josh Elsasser)
221 * new platform: experimental support for ppc/openbsd (thanks to Josh
223 * bug fix: Floating-point traps now work on ppc/linux.
225 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
226 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
227 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
228 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
229 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
230 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
231 SB-THREAD:GRAB-MUTEX.
232 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
233 contain additional data structures and tools for concurrent programming;
234 at the moment it contains a lock-free queue, and a lock-free mailbox
236 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
237 GET-MUTEX but takes &key rather than &optional parameters. Also added
238 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
240 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
241 SB-THREAD:WAIT-ON-SEMAPHORE.
242 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
244 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
245 conditions to defer the deadline for forever.
246 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
248 * enhancement: errors from NO-APPLICABLE-METHOD and
249 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
250 generic function call.
251 * enhancement: SB-BSD-SOCKET improvements
252 ** sockets and socket streams now have a more informative printed
253 representation based on the corresponding SOCKET-NAME and
255 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
257 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
258 CL:CLOSE when appropriate, and no longer disassociates the stream
259 from the socket if close failed. (lp#543951)
260 * improvements to the instrumenting profiler
261 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
262 ** optimization: counters no longer use locks for the overflow mode.
263 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
264 incurred an off-by-one miscount.
265 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
266 * enhancement: improved DEFMETHOD pretty-printing.
267 * enhancement: perform range reduction when arguments are too large for
268 x87's transcendentals (instead of returning 0). (lp#327192)
269 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
270 some of CL-PPCRE's macros. (lp#570079)
271 * enhancement: our machine code is slightly less hostile to valgrind on
273 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
274 to Robert Swindells and Aleksej Saushev)
275 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
276 * bug fix: a rare case of startup-time page table corruption.
277 * bug fix: a semaphore with multiple waiters and some of them unwinding due
278 to timeouts could be left in an inconsistent state.
279 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
280 * bug fix: misoptimization of multiplication by one in
281 (SB-C::FLOAT-ACCURACY 0) policies.
282 * bug fix: miscounts in SB-PROFILE.
283 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
284 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
285 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
286 up itself" (March 2010) for further details.
287 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
288 against length of the list if the element is found before the specified
289 END is reached. (thanks to Alec Berryman, lp#554385)
290 * bug fix: errors signalled during package graph modification no longer
291 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
292 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
293 :SB-DOC feature. (lp#552564)
294 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
295 * bug fix: more robust runtime executable path detection. (lp#375549)
296 * bug fix: GCD always returns positive values. (lp#413680)
297 * bug fix: Converting division to multiplication by reciprocal handles
299 * bug fix: We were too eager in eliding range reduction tests on x87.
300 The maximal magnitude is 2^63, not 2^64.
301 * bug fix: Transforms for TRUNCATE don't die when the result is completely
303 * bug fix: Maybe restore buildability on Alpha.
304 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
306 * bug fix: RANDOM-STATE can be printed readably again.
307 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
308 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
309 types) could result in type mismatches during compilation.
311 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
312 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
313 stack frame thrown from.
314 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
315 compiler optimization qualities inside dynamic extent of its body.
316 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
317 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
319 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
320 constraint propgation, allowing better compilation eg. when used to
321 access structures with WITH-SLOTS. (lp#520366)
322 * optimization: the compiler is now more aware of the type of the underlying
323 storage vector for multidimensional simple arrays resulting in better code
324 for accessing such arrays.
325 * optimization: passing NIL as the environment argument to TYPEP no longer
326 inhibits optimizing it. (lp#309788)
327 * optimization: more efficient register usage when handling single-float
328 arguments on x86-64. (thanks to Lutz Euler)
329 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
330 pre-allocated temporary vectors. (lp#496249)
331 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
332 in :INITIAL-CONTENTS. (lp#523612)
333 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
334 functions. (lp#524707)
335 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
336 WITH-SLOTS usages during compilation.
337 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
338 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
339 all x86oid platforms with :UD2-BREAKPOINTS target feature.
340 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
341 instruction (tested on x86oid linux with ud2-breakpoints).
342 * bug fix: slam.sh now works on win32.
343 * bug fix: better differences of numeric types. (lp#309124)
344 * bug fix: arrays declared intersection and union types can have their
345 upgraded element type derived. (lp#316078)
346 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
347 threads started during profiling. (lp#472499)
348 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
350 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
351 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
352 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
353 values instead of signaling an error. (lp#309093)
354 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
356 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
357 declarations (lp#497321)
358 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
359 and failed to detect circular lists (lp#452008)
360 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
362 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
363 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
364 due to it, so that handlers can run.
365 * bug fix: reparsing undefined types if they have become defined since
367 * bug fix: missing &REST type in a proclamation for a function with both
368 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
369 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
370 expanded calls (lp#542174)
371 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
372 than just at toplevel form.
374 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
375 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
376 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
377 but work on type specifiers.
378 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
379 to name a type specifier.
380 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
381 specifier is valid where "valid" basically means "would be accepted as
382 second argument of TYPEP".
383 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
384 returns the function's declared, or derived FTYPE.
385 * new feature: SB-POSIX now supports accessing the d_ino member of
386 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
387 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
388 provide for seeding a RANDOM-STATE object with user-provided data or
389 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
390 attempt to initialize the returned state from the operating system's
391 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
392 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
393 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
394 * bug fix: Fix grammar and style issues for the docstrings of
395 printer-related variables and functions. (Thanks to mon_key; launchpad
397 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
399 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
400 in a row even though a handler defered the deadline long into the
402 * bug fix: A deadline handler was run without interrupts enabled for a
403 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
404 in infinitely spinning, non-killable threads.
405 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
406 before reaching the erring stack frame.
407 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
408 real power. (launchpad bug lp#525949)
409 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
410 GENCGC platforms. (launchpad bug lp#529014)
411 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
412 (launchpad bug lp#525916)
413 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
414 (Thanks to Robert Goldman)
416 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
417 * optimization: ROUND with a single single-float or double-float argument
418 is properly inlined when possible.
419 * optimization: Slightly better code is generated for integer<->float
420 conversions and for single-float<->double-float conversions on x86-64.
421 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
422 code for 32-bit and 64-bit rotations on x86-64.
423 * bug fix: The install script changes the ownership of directories as well
424 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
425 launchpad bug lp#508485)
426 * bug fix: TRUNCATE with a single single-float or double-float argument is
427 properly inlined when possible. (launchpad bug lp#489388)
428 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
429 no longer causes a compiler error on x86 and ppc.
430 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
431 always relative to *READTABLE* rather than the passed argument.
433 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
434 * minor incompatible change: threading support is now enabled by default
436 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
438 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
439 are now caught and reported just like errors during macroexpansion.
440 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
441 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
442 * enhancement: ASDF systems can now depends on SB-QUEUE.
443 * fixes and improvements related to Unicode and external formats:
444 ** bug fix: error handling and restart usage in the ucs-2 external format
446 ** there is now an implementation of the ucs-4 external format.
447 ** the utf-16 and utf-32 external formats are supported.
448 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
449 in the environment. setenv() and unsetenv() are also provided. (reported by
450 Fare Rideau; launchpad bug lp#460455)
451 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
452 loading. This ensures sensible errors for .FASL files from other
453 implementations on case-insensitive filesystems. (reported by Willem
454 Broekema; launchpad bug lp#489417)
455 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
456 Willem Broekema; launchpad bug lp#489698).
457 * bug fix: some minor code rearrangements to reenable warning-free building
458 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
459 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
461 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
464 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
465 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
466 * improvement: support O_LARGEFILE access to files larger than 2GB on
467 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
468 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
469 definitions for methods specializing on the passed class itself.
470 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
471 definitions for methods specializing on the passed class itself, or on
473 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
474 about itself during the build (e.g. for M-? in Slime), if this flag is
475 enabled in customize-target-features.lisp. This will increase the core
476 size by about 5-6mb, though, so it's mostly interesting to SBCL
478 * new feature: various GENCGC tuning parameters have been experimentally
479 documented and exported from SB-EXT. See documentation for details.
480 * fixes and improvements related to Unicode and external formats:
481 ** the Unicode character database has been upgraded to the
482 Unicode 5.2 standard, giving names and properties to a number of new
483 characters, and providing a few extra characters with case
485 ** improvement: restarts for providing replacement input/output on coding
486 errors for fd-stream external formats.
487 ** improvement: where :<encoding> is a keyword corresponding to an
488 external format the system supports, it is now possible to specify
489 (:<encoding> :replacement <character>) as an external format which will
490 automatically substitute <character> on encoding or decoding errors for
491 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
493 ** improvement: the file streams underlying the standard streams (such as
494 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
495 which uses the replacement mechanism to handle encoding errors,
496 preventing various infinite error chains and unrecoverable I/O
498 ** minor incompatible change: the utf-8 external format now correctly
499 refuses to encode Lisp characters in the surrogate range (char-codes
500 between #xd800 and #xdfff).
501 ** fix a typo preventing conversion of strings into octet vectors
502 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
504 ** fix a bug in the octet multibyte handling of decoding errors and the
505 USE-VALUE restart. (launchpad bug lp#314939)
506 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
507 restart on fd-stream decoding errors.
508 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
509 error is near the end of file.
510 ** fix a double-error case in unibyte octet conversions, when the first
511 use of USE-VALUE is ignored.
512 ** fix bugs in handling of undefined code points in unibyte encodings.
513 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
514 streams after an UNREAD-CHAR.
515 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
516 object is allocated in a boxed region of dynamic space.
517 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
518 fork with multiple Lisp threads running is made, instead of going
519 ahead with unpredictable consequences. (reported by Leslie Polzer)
520 * bug fix: uses of slot accessors on specialized method parameters within
521 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
522 error while finalizing the class. This fix may cause classes with slot
523 accessors to be finalized later than previously. (reported by Lars Rune
524 Nøstdal; launchpad bug lp#473699)
525 * bug fix: restore buildability on the MIPS platform. (regression from
526 1.0.30.38, reported by Samium Gromoff)
527 * bug fix: inspecting closures is less likely to fail with a type error.
528 * bug fix: no timer starvation when setting the system clock back.
529 (launchpad bug lp#460283)
530 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
531 standard pprint dispatch table as specified by CLHS.
532 * bug fix: give CLISP a hint about a type declaration to enable it to build
533 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
535 * bug fix: correctly dump literal objects in defaulting forms of arglists.
536 (reported by Attila Lendvai; launchpad bug lp#310132)
537 * bug fix: distinguish in type specifiers between arrays that might be
538 complex and arrays that are definitely complex. (launchpad bug lp#309129)
539 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
540 type. (reported by Levente Mészáros; launchpad bug lp#485972)
541 * bug fix: setting the value of a symbol-macro within a method in the
542 presence of type declarations works properly again. (reported by Iban
543 Hatchondo; launchpad bug lp#485019)
545 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
546 * optimization: faster FIND and POSITION on strings of unknown element type
547 in high SPEED policies. (thanks to Karol Swietlicki)
548 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
550 * improvement: better error signalling for bogus parameter specializer names
551 in DEFMETHOD forms (reported by Pluijzer)
552 * bug fix: DELETE-FILE once again works on logical pathnames (regression
554 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
556 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
557 removes previous default initargs (reported by Lars Rune Nøstdal and
559 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
560 lambda-lists. (reported by Peter Seibel)
561 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
562 correctly when starting from an executable core without saved runtime
563 options (reported by Faré Rideau, thanks to Zach Beane)
564 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
565 an optimization note instead. (reported by Martin Cracauer)
566 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
567 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
568 new process group if it doesn't need to share stdin with the sbcl
569 process. (thanks to Leslie Polzer)
570 * bug fix: SATISFIES could be misoptimized to refer to a local function.
571 (reported by Stanislaw Halik)
573 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
574 * improvement: stack allocation is should now be possible in all nested
575 inlining cases: failure to stack allocate when equivalent code is manually
576 open coded is now considered a bug.
577 * improvements related to Unicode:
578 ** the Unicode character database has been upgraded to the
579 Unicode 5.1 standard, giving names and properties to a number of new
580 characters, and providing a few extra characters with case
582 ** the system now recognizes and produces names for Unicode Hangul
584 ** the EBCDIC-US external-format is now supported for octet operations
585 (as well as for stream operations).
586 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
587 be used to output toplevel compile-time effects into a separate .CFASL
589 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
590 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
592 * optimization: TRUNCATE on known single- and double-floats is upto 25%
594 * optimization: division of floating point numbers by constants uses
595 multiplication by reciprocal when an exact reciprocal exists.
596 * optimization: multiplication of single- and double-floats floats by
597 constant two has been optimized.
598 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
599 sufficient type information is available. (thanks to Leslie Polzer)
600 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
601 known structure objects are as efficient as defstruct generated accessors.
602 * optimization: unused vector creation can now be optimized away.
603 * improvement: ASDF systems can now depends on SB-INTROSPECT.
604 * improvement: a STYLE-WARNING is signalled when a generic function
605 clobbers an earlier FTYPE proclamation.
606 * improvement: the compiler is able to track the effective type of
607 generic function across method addition and removal even in the
608 absence of an explicit DEFGENERIC.
609 * improvement: DESCRIBE now reports on symbols naming undefined
610 but assumed or declared function as well.
611 * improvement: recompilation of systems using SB-GROVEL now works
612 (thanks to Leslie Polzer)
613 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
614 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
616 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
617 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
618 well as user defined declaration names.
619 ** VARIABLE-INFORMATION is now aware of alien variables.
620 * improvement: improved address space layout on OpenBSD (thanks to Josh
622 * improvement: pretty-printing of various Lisp forms has been improved
623 (thanks to Tobias Rittweiler)
624 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
625 unused were deleted in safe code. (reported by John Fremlin)
626 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
628 * bug fix: some out-of-line array predicates were missing (reported by
630 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
632 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
633 (thanks to Larry D'Anna)
634 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
635 as well. (reported by Josh Elsasser)
636 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
637 leading to possible attempts to delete the same file twice. See docstring
638 on DELETE-FILE for details. (reported by John Fremlin)
639 * bug fix: DELETE-FILE once again deletes the file named by the pathname
640 designator argument, rather than its truename. (reported by Luis
642 * bug fix: the low-level debugger had 32-bit assumptions and was missing
643 information about some array types. (thanks to Luis Oliveira)
644 * bug fix: moderately complex combinations of inline expansions could
645 be miscompiled if the result was declared to be dynamic extent.
646 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
647 form (+ <variable> <integer>) were miscompiled under certain
649 * bug fix: in some cases no compiler note about failure to stack allocate
650 was emitted, even if the objects were in fact heap allocated.
651 * bug fix: minor violation of "otherwise inaccessible" rule for stack
652 allocation could cause objects users might reasonably expect to
653 be heap allocated to be stack allocated.
654 * bug fix: DESCRIBE signalled an error for generic functions under
655 certain circumstances. (thanks to Leslie Polzer)
656 * bug fix: Fixed spelling of an error message.
658 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
659 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
660 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
661 of SB-THREAD:THREAD-ERROR-THREAD.
662 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
663 * new feature: docstrings for local and anonymous functions are no longer
664 discarded. (thanks to Leslie Polzer)
665 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
666 values in other threads.
667 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
668 about object allocation.
669 * optimization: division of a real float by a complex float is implemented
670 with a specialised code sequence.
671 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
672 keywords is an order of magnitude faster.
673 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
674 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
675 methods, and similarly for non-standard metaclass classes as long as there
676 are no methods additional on MAKE-INSTANCE.
677 * optimization: more efficient type-checks for FIXNUMs when the value
678 is known to be a signed word on x86 and x86-64.
679 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
680 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
682 * optimization: compiler is smarter about delegating argument type checks to
684 * optimization: several character functions are now compiled somewhat more
685 efficiently. (reported by Lynn Quam)
686 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
687 * improvement: less unsafe constant folding in floating point arithmetic,
688 especially for mixed complex/real -float operations.
689 * optimization: constant double and single floats are stored in native
690 unboxed format on x86[-64].
691 * optimization: smarter code for arithmetic operations with constant floats,
692 complex floats, or integers on x86[-64].
693 * optimization: smarter code for conjugate/multiplication of float complexes
694 and abs/negate of floats on x86-64.
695 * optimization: more efficient complex float and real float operations on
697 * improvement: complex float division is slightly more stable.
698 * improvement: DESCRIBE output has been reworked to be easier to read and
699 contains more pertinent information.
700 * improvement: failure to provide requested stack allocation compiler notes
701 provided in all cases (requested stack allocation not happening without a
702 note being issued is now considered a bug.)
703 * bug fix: SB-POSIX exports the documented types and functions
704 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
705 types. (reported by "abhi")
706 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
707 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
708 (thanks to Paul Khuong)
709 * bug fix: looping around HANDLER-CASE could silently consume stack space
710 on each iteration. (reported by "foobar")
711 * bug fix: better error signalling when calls to functions seeking elements
712 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
713 (reported by Tobias Rittweiler)
714 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
715 directory components now works as it used to. (various prolems reported by
716 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
717 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
718 (reported by Elliot Slaughter, thanks to Stas Boukarev)
719 * bug fix: bogus undefined variable warnings from fopcompiled references to
720 global variables. (thanks to Lars Rune Nøstdal)
721 * bug fix: foreign function names should now appear in backtraces on
722 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
723 * bug fix: SETF compiler macro documentation strings are not discarded
725 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
726 (thanks to Alex Plotnick)
727 * bug fix: SLEEP accepts large integer arguments, truncating them to
728 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
729 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
730 * bug fix: compiler notes for expensive slot type checks could be emitted
731 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
733 changes in sbcl-1.0.29 relative to 1.0.28:
734 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
735 https://bugs.launchpad.net/sbcl
736 Bugs can be reported directly there, or by sending email to
737 sbcl-bugs@lists.sourceforge.net
738 (no subscription required.)
739 * minor incompatible change: under weak type checking policy integer
740 types are weakened less aggressively.
741 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
742 allowed to return, which causes SBCL to quit with exit status 0. Previously
743 if the function returned with a small integer return value, that value
744 was accidentally reused as the exit status.
745 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
746 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
747 :HASH-FUNCTION argument. Refer to user manual for details.
748 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
750 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
751 microseconds since the Unix epoch on all platforms.
752 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
753 allows the compiler to safely elide boundedness checks for special
755 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
756 the symbol, prohibits both lexical and dynamic binding. This is mainly an
757 efficiency measure for threaded platforms, but also valueable in
759 * new feature: UNC pathnames are now understood by the system on Windows.
760 * optimization: the compiler uses a specialized version of FILL when the
761 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
763 * optimization: accesses to potentially non-simple arrays where element type
764 is known are 50% faster.
765 * optimization: compiler now generates faster array typechecking code.
766 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
768 * optimization: multidimensional array accesses in the absence of type
769 information regarding array rank are approximately 10% faster due to
770 open coding of ARRAY-RANK.
771 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
772 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
774 * optimization: result of call to VECTOR can now be stack allocated.
775 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
776 as long as the resulting array is one-dimensional and has a known
777 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
778 length of the list matches the known length of the vector does not
779 allocate the list as an intermediate step. Ditto for VECTOR and simple
781 * optimization: MAKE-ARRAY can now stack allocate in the presence of
782 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
783 known element type, and is known to be simple and one dimensional.
784 * improvement: SBCL now emits a compiler note where stack allocation was
785 requested but could not be provided (not in all cases, unfortunately)
786 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
787 * improvement: pretty-printing loop has been implemented properly. (thanks
788 to Tobias Rittweiler)
789 * documentation: CLOS slot typechecing policy has been documented.
790 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
791 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
792 pointer, leading to memory faults. (thanks to Bart Botta)
793 * bug fix: better floating point exception handling on x86/OpenBSD.
794 (thanks to Josh Elsasser)
795 * bug fix: exit status from QUIT when called under --script was lost
796 (reported by Hubert Kauker)
797 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
798 same implementation of FILL to initialize the array, even if a more
799 efficient one was available (reported by Stas Boukarev, thanks to
801 * bug fix: potential miscompilation of array stack allocation on x86 and
802 x86-64. (reported by Time Tossavainen)
803 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
804 result in their subforms being treated as top level forms. (reported by
806 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
807 than a machine register could leave garbage in the high bits of the
808 result register (bug 316325).
809 * bug fix: disable address space randomization Linux/x86-64 as well,
810 not just x86-64. (reported by Ken Olum)
811 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
812 generate incorrect code.
813 * bug fix: #201; type inference for CONS and ARRAY types could derive
814 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
815 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
816 could not be assigned to or bound with PROGV. (reported by Lorenz
818 * bug fix: the value of CL:- in the inspector was the previous expression
819 evaluated rather than the expression being evaluated.
820 * bug fix: constants can no longer be locally declared special.
821 * bug fix: signals delivered to threads started from foreign land (read:
822 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
823 thread by blocking all signals and resignalling.
824 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
825 from :INITFORM, if any.
827 changes in sbcl-1.0.28 relative to 1.0.27:
828 * a number of bugs in cross-compilation have been fixed, with the ultimate
829 result that building under (at least) clisp should be much more reliable.
830 * minor incompatible changes: echo-streams now propagate unread-char to the
831 underlying input stream, and no longer permit unreading more than one
833 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
834 frames, allowing for instance more reliable backtraces.
835 * improvement: the debugger REPL can now reference lexical variables
836 by name directly for code compiled with (DEBUG 3).
837 * improvement: errors from malformed declarations now have better source
838 paths associated with them. (thanks to Tobias Rittweiler)
839 * optimization: faster local calls on x86/x86-64
840 * bug fix: some error messages for out-of-bound array indexes confused the
841 index and the bound. (thanks to Stas Boukarev)
842 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
844 * bug fix: running regressions tests in shells without OSTYPE set now works.
845 (reported by Harald Hanche-Olsen)
846 * bug fix: more robust static space exhaustion signalling from
847 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
848 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
849 docstring away instead of storing it under names such as (LAMBDA (X)).
850 (reported by Leslie Polzer)
851 * bug fix: timers could go off in the wrong order, be delayed indefinitely
852 (thanks to Ole Arndt for the patch)
853 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
854 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
855 potentially-invalid effective methods in its cache.
856 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
857 instances as well (thanks to Paul Khuong)
858 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
859 SB-POSIX:WAITPID and their C equivalents.
860 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
862 changes in sbcl-1.0.27 relative to 1.0.26:
863 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
864 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
865 * improvement: the system either recovers from stack exhaustion or dies
866 properly as opposed to leaving the user uncertain of whether the handler
867 trampled on some random memory next to the stack or having to rely on
868 --lose-on-corruption (which is still a good idea to use in production
869 because stack exhaustion can happen in signal handlers which will likely
871 * bug fix: fix gc related interrupt handling bug on ppc (regression from
872 1.0.25.37, reported by Harald Hanche-Olsen)
873 * bug fix: work around signal delivery bug in darwin (regression from
874 1.0.25.44, reported by Sidney Markowitz)
875 * bug fix: fix ERROR leaking memory (reported by David Thompson)
877 changes in sbcl-1.0.26 relative to 1.0.25:
878 * incompatible change: an interruption (be it a function passed to
879 INTERRUPT-THREAD or a timer function) runs in an environment where
880 interrupts can be enabled. The interruption can use
881 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
882 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
883 potentially running out of stack. Keep in mind that in the absence
884 of WITHOUT-INTERRUPTS some potentially blocking operation such as
885 acquiring a lock can enable interrupts.
886 * incompatible change: GC-OFF and GC-ON are removed, as they were
887 always unsafe. Use WITHOUT-GCING instead.
888 * new feature: runtime option --disable-ldb
889 * new feature: runtime option --lose-on-corruption to die at the
890 slightest hint of possibly non-recoverable errors: running out of
891 memory, stack, alien stack, binding stack, encountering a memory
892 fault, etc. In the absence of --lose-on-corruption a warning is
894 * enhancement: detect binding stack exhaustion
895 * enhancement: detect alien stack exhaustion on x86/x86-64
896 * improvement: generally more stable and reliable interrupt handling
897 * improvement: there is a per thread interruption queue,
898 interruptions are executed in order of arrival
899 * improvement: a repeating timer reschedules itself when the it has
900 finished, but expiration times are spaced equally. If an
901 expiration time is in the past it will trigger after a short grace
902 period that may give a chance to other things to run.
903 * optimization: slightly faster gc on multithreaded builds
904 * optimization: faster WITHOUT-GCING
905 * bug fix: when JOIN-THREAD signals an error, do it when not holding
906 important locks so that the debugger/handler doesn't produce
907 recursive errors or deadlock.
908 * bug fix: real-time signals are not used anymore, so no more
909 hanging when the system wide real-time signal queue gets full.
910 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
912 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
913 * bug fix: fix random memory faults related to interrupts on alpha
914 * bug fix: fix random memory faults related to interrupts on sparc
915 * bug fix: fix deadlocks related to starting threads
916 * bug fix: fix deadlines on locks on futex platforms
917 * bug fix: restore errno in signal handlers
918 * bug fix: fix deadlocks related to hash tables
919 * bug fix: fix deadlocks in pcl
921 changes in sbcl-1.0.25 relative to 1.0.24:
922 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
923 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
924 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
925 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
926 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
927 better name and does not return values so stale on multiprocessor systems.
928 Also, HOLDING-MUTEX-P was added for about the only sane usage of
930 * improvement: unithread builds keep track of MUTEX-VALUE.
931 * improvement: reading from a TWO-WAY-STREAM does not touch the output
932 stream anymore making it thread safe to have a concurrent reader and
933 a writer, for instance, in a pipe.
934 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
935 arguments, making compiler-macros for SETF-functions able to inspect
936 their constant arguments.
937 * improvement: COMPILE-FILE reports times with millisecond accuracy
938 (thanks to Luis Oliveira)
939 * optimization: CHAR-CODE type derivation has been improved, making
940 TYPEP elimination on subtypes of CHARACTER work better. (reported
941 by Tobias Rittweiler, patch by Paul Khuong)
942 * bug fix: setting alien structure fields of type struct by value now
943 computes the right offset for the memory copy.
944 * bug fix: compilation problem involving inlined calls to aliens with
945 result type VOID. (reported by Ken Olum)
946 * bug fix: #235a; sequential inline expasion in different policies no
947 longer reuses the functional from the previous expansion site.
948 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
949 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
950 * bug fix: named ENUMs in multiply-referenced alien record types no longer
951 cause an implied type redefinition. Regression from 1.0.21.29.
952 * bug fix: sign-extension of small signed return values now works with C
953 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
954 * improvements to the Windows port:
955 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
956 Westfold, thanks to Rudi Schlatte)
958 changes in sbcl-1.0.24 relative to 1.0.23:
959 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
960 vector of a multidimensional SIMPLE-ARRAY.
961 * new feature: the system now signals a continuable error if standard
962 readtable modification is attempted. (thanks to Tobias Rittweiler)
963 * new feature: DIRECTORY has been extended with a non-standard keyword
964 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
965 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
966 has been robustified and documented better. (thanks to Robert Goldman)
967 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
968 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
969 * tradeoff: constant FORMAT control strings are now compiled unless
970 SPACE > SPEED (previously only when SPEED > SPACE.)
971 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
973 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
975 * bug fix: lexical type declarations are now correctly reported by
976 SB-CLTL2. (reported by Larry D'Anna)
977 * bug fix: STRING-TO-OCTETS did not handle :START properly when
978 using UTF-8 as external format. (thanks to Luis Oliveira)
979 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
980 are signalled correctly. (thanks to Stas Boukarev)
981 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
982 designator. (thanks to Tobias Rittweiler)
983 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
984 designator, and returns T instead of the function. (thanks to
986 * bug fix: direct superclasses of STANDARD-CLASS and
987 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
988 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
989 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
990 when no class with the named slot yet exists no longer causes a
991 compile-time style-warning.
992 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
993 in safe code. (reported by Didier Verna)
994 * bug fix: #430; nested structure constructors can stack allocate.
995 * bug fix: on some 64-bit platforms dynamic space size was truncated
996 to #xffff0000 bytes. (reported by Benjamin Lambert)
997 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
998 REPL unusable. (reported by Daniel Herring)
999 * bug fix: return values of READ-SEQUENCE did not take :START into
1000 account on file streams, regressions since 1.0.12.22. (reported by
1001 Thomas Russ, patch by Paul Khuong)
1002 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1003 method specializer used to confuse permuation vector optimization.
1004 * bug fix: system inserted bogus implicit type declarations for local
1005 special variables in DEFMETHOD bodies.
1006 * bug fix: #354; duplicated frames in backtraces due to
1007 non-tail-call-optimized XEPs to functions with return type NIL
1009 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1010 initializes structure object slots according to DEFSTRUCT initforms,
1011 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1012 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1013 (reported by Bruno Haible and Stephen Wilson)
1014 * bug fix: #395; fill-pointer output streams used now support
1015 element-type BASE-CHAR as well.
1016 * bug fix: compiler error when attempting to derive return value of
1017 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1019 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1021 * bug fix: Mac OS X binaries should now be portable between Leopard
1024 changes in sbcl-1.0.23 relative to 1.0.22:
1025 * enhancement: when disassembling method functions, disassembly
1026 for the associated fast function is also produced.
1027 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1029 * optimization: printing with *PRINT-PRETTY* true is now more
1030 efficient as long as the object being printed doesn't require
1031 special handling by the pretty printer.
1032 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1033 now interact correctly with type declarations.
1034 * partial bug fix: PCL detects infinite recursion during wrapper
1035 validation. (thanks to Attila Lendvai)
1036 * bug fix: #426; nested function calls are inlined properly.
1037 Previously if FOO was an inline function, in calls of the form
1038 (FOO (FOO ...)) the outer call was not inlined.
1039 * bug fix: long long arguments passed in registers to alien
1040 functions on PowerPC Linux and NetBSD are now handled correctly
1041 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1043 changes in sbcl-1.0.22 relative to 1.0.21:
1044 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1045 for the shared object in the current directory, but passes the native
1046 namestring of the designated pathname to the operation system's shared
1047 object loading function as-it.
1048 * minor incompatible change: --disable-debugger toplevel option now takes
1049 effect before processing of initialization files and --eval or --load
1051 * new feature: new commandline argument: --script, which supports
1052 shebang lines. See documentation for details. (based on work by
1054 * new feature: SAVE-LISP-AND-DIE can save current values of
1055 --dynamic-space-size and --control-stack-size in the executable core,
1056 causing it to skip normal runtime option processing. See documentation
1057 for details. (thanks to Zach Beane)
1058 * enhancement: inoccous calls to EVAL or generic functions dispatching
1059 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1060 * enhancement: the system no longer resignals errors from --load and
1061 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1062 associated with the original error to be lost. (thanks to Ariel
1064 * enhancement: :DONT-SAVE keyword argument has been added to
1065 LOAD-SHARED-OBJECT for controlling interaction with
1066 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1067 the effects of an earlier LOAD-SHARED-OBJECT call.
1068 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1069 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1070 provided. (reported by Cedric St-Jean)
1071 * bug fix: circularity handling in the reader did not treat raw
1072 structure slots correctly. (reported by Cedric St-Jean)
1073 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1074 file descriptors when there were none.
1075 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1076 was broken. (reporteed by Willem Broekema)
1077 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1078 pathnames without a directory.
1079 * bug fix: COMPILE-FILE did not warn about undefined variable
1080 references at toplevel, and LOAD of the resulting fasl did
1081 not signal an error.
1082 * bug fix: functions with non-required arguments used to end up with
1083 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1084 * bug fix: redefining a function with non-required arguments didn't
1085 update the system's knowledge about its call signature properly.
1086 * bug fix: fixed #431; incompatible alien record type redefinitions
1087 are detected and handled. (reported by Neil Haven)
1088 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1089 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1091 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1092 after alien stack frames.
1093 * bug fix: strings passed to mk{s,d}temp lacked null termination
1095 changes in sbcl-1.0.21 relative to 1.0.20:
1096 * new feature: the compiler is able to track the effective type of a
1097 generic function across method addition and removal.
1098 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1099 appropriately typed structure slots without locking.
1100 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1101 information like those gathered by TIME using a programming-friendly
1103 * new feature: TIME reports time taken even if the form performs a
1104 non-local transfer of control.
1105 * enhancement: reduced conservativism on GENCGC platforms: on
1106 average 45% less pages pinned (measured from SBCL self build).
1107 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1108 mutate constant symbols or violate declaimed type of the symbol.
1109 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1110 sleeping on the semaphore in heavily contested semaphores.
1111 * bug fix: semaphores and condition variables were not interrupt
1113 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1114 owned by other threads anymore.
1115 * bug fix: FIND on lists called KEY outside the specified
1116 subsequence. (reported by budden)
1117 * bug fix: LOG doesn't use single-float intermediate results when
1118 given mixed integer and double-float arguments, leading to better
1119 precision. (reported by Bob Felts)
1120 * bug fix: LOG with base zero returned values of inconsistent type.
1122 changes in sbcl-1.0.20 relative to 1.0.19:
1123 * minor incompatible change: OPTIMIZE qualities
1124 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1125 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1126 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1127 * documentation: some slot access efficiency guidelines have been
1128 added to the user manual.
1129 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1130 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1131 as ASSOC and MEMEBER.
1132 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1133 to more efficient EQ-comparison versions more often.
1134 * optimization: enhanced derivation of DOLIST iteration variable type
1136 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1138 * optimization: runtime lookup of function definitions can be
1139 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1140 * optimization: compiler is able to derive the return type of
1141 (AREF (THE STRING X) Y) as being CHARACTER.
1142 * optimization: CLRHASH on empty hash-tables no longer does pointless
1143 work. (thanks to Alec Berryman)
1144 * optimization: REPLACE deftransforms don't punt when :START1 or
1146 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1147 no longer emits a code deletion note. (reported by Andrew
1149 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1150 functions with an odd number of &OPTIONAL arguments, a &REST
1151 argument, and one or more &KEY arguments at the call site.
1152 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1153 arguments appeared at call sites as well.
1154 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1155 READ-LINE &co can no longer read from them afterwards. (reported
1157 * bug fix: fixed #427: unused local aliens no longer cause compiler
1158 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1160 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1161 alien-stack leakage. (reported by Andy Hefner)
1162 * bug fix: PROGV signals an error when an attempt to violate declared
1163 type of a variable or bind a constant is made.
1164 * bug fix: SET signals an error when an attempt to violate declared
1165 type of a variable is made.
1166 * bug fix: restart computation during the execution of a restart
1167 test function no longer causes infinite recursion. (reported by
1169 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1170 signals an error. (thanks to Pierre Mai)
1171 * bug fix: EXPORT left symbol unexported in conflict situations.
1172 (thanks to Michael Weber)
1173 * bug fix: correctly handle name conflicts involving CL:NIL.
1174 (thanks to Michael Weber)
1175 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1176 conflicts arising from USEing package with conflicting symbols
1177 correctly. (thanks to Michael Weber)
1179 changes in sbcl-1.0.19 relative to 1.0.18:
1180 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1181 warnings that go otherwise unhandled will be muffled if they are
1182 of the type that's the value of this variable.
1183 * optimization: stack allocation is slightly more efficient on x86
1185 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1186 where a raw slot always is initialized using the initform whose
1187 type is not know sufficiently well a compile-time are now compiled
1188 correctly. (reported by John Morrison)
1189 * bug fix: compiler no longer makes erronous assumptions in the
1190 presence of non-foldable SATISFIES types.
1191 * bug fix: stack analysis missed cleanups of dynamic-extent
1192 arguments in non-let-converted calls to local functions.
1193 * improvements to the Windows port:
1194 ** adjusted address spaces for building on both Win32 and
1195 Win64. (thanks for John Connors)
1196 * fixed some bugs revealed by Paul Dietz' test suite:
1197 ** interval arithmetic during type derivation used inexact integer
1198 to single-float coercions.
1199 ** arithmetic operations involving large integers and single
1200 floats give the same results in compiled and interpreted code.
1201 ** deriving the result type of COERCE no longer signals an error
1202 if the derived type of the second argument is a MEMBER type
1203 containing invalid type specifiers.
1204 ** ADJOIN with constant NIL as second argument works correctly.
1205 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1207 changes in sbcl-1.0.18 relative to 1.0.17:
1208 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1209 profiles only the current thread.
1210 * minor incompatible change: changes to SYMBOL-VALUE of constants
1211 defined with DEFCONSTANT now signal an error.
1212 * enhancement: SB-SPROF now has support for wallclock profiling,
1213 and is also able to profile specific threads. REPORT output
1214 has also additional sorting options.
1215 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1217 * optimization: structure allocation has been improved
1218 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1219 ** out of line constructors are ~10% faster.
1220 ** inline constructors are ~15% faster.
1221 ** inline constructors are capable of dynamic extent allocation
1222 (generally on x86 and x86-64, in some cases on other platforms
1224 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1226 * optimization: file compiler is now able to coalesce non-circular
1227 lists, non-base strings, and bit-vectors. Additionally, constants
1228 are never referenced through SYMBOL-VALUE at runtime.
1229 * optimization: code defining methods on PRINT-OBJECT (and other
1230 generic functions in the COMMON-LISP package) now loads faster.
1231 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1233 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1234 fasl is now deleted. (reported by Attila Lendvai)
1235 * bug fix: READ-LINE always returned NIL for the last line in files.
1236 (reported by Yoshinori Tahara)
1237 * bug fix: more accurate disassembly annotations of foreign function
1238 calls. (thanks to Andy Hefner)
1239 * bug fix: trimming non-simple strings and non-string string
1240 designators when the there is nothing to trim works properly.
1241 (thanks to James Knight)
1242 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1243 (thanks to Travis Cross)
1244 * fixed some bugs revealed by Paul Dietz' test suite:
1245 ** NIL is a valid function name (regression at 1.0.13.38)
1246 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1247 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1248 fill pointers properly (regression at 1.0.12.23)
1249 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1250 displacement indices properly (regression at 1.0.12.23)
1252 changes in sbcl-1.0.17 relative to 1.0.16:
1253 * temporary regression: user code can no longer allocate closure
1254 variable storage on stack, due to bug 419 without explicitly
1255 requesting it. Please consult sbcl-devel for advice if you need to
1256 use this feature in the meanwhile.
1257 * new feature: runtime argument --control-stack-size can be used to
1258 adjust thread default control stack size.
1259 * enhancement: improved TIME output
1260 ** all times are reported using the measured accuracy (milliseconds
1261 for real and GC times, microseconds for everything else.)
1262 ** processor cycle counts on x86 and x86-64.
1263 ** interpreted forms are counted for both evaluator modes.
1264 ** number of lambdas converted by the compiler is reported.
1265 ** CPU percentage report (computed from real and total run time.)
1266 ** more comprehensive run time reporting, using a condenced format
1267 ** interperted form, lambda, and page fault counts are omitted
1269 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1271 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1272 * optimization: two argument forms of LAST are upto ~10% faster
1273 in normal SPEED policies.
1274 * optimization: NCONC no longer needs to heap cons its &REST list
1275 in normal SPEED policies.
1276 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1277 to Sidney Markowitz)
1278 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1279 regression since 1.0.9.1. (thanks to Eric Marsden)
1280 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1281 since 1.0.15.36. (thanks to Paul Khuong)
1282 * bug fix: LAST when always returned the whole list when given a bignum
1283 as the second argument.
1284 * bug fix: dynamic extent allocation of nested lists and vectors
1285 could leak to otherwise accessible parts.
1286 * bug fix: invalid optimization of heap-allocated alien variable
1288 * bug fix: fasl header checking is less vulnerable to different
1289 platform word lengths.
1290 * bug fix: more correct assembler syntax for GNU binutils
1291 2.18.50.0.4 support. (thanks to Marijn Schouten)
1292 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1294 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1295 declarations) successfully. (reported by Attila Lendvai)
1297 changes in sbcl-1.0.16 relative to 1.0.15:
1298 * minor incompatible change: revert the changes to sb-posix's error
1299 signaling added in 1.0.14.
1300 * minor incompatible change: change PROBE-FILE back to returning
1301 NIL whenever we can't get a truename, as was the case before 1.0.14.
1302 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1303 inherits from ERROR instead of just CONDITION.
1304 * new feature: SB-INTROSPECT can provide source locations for instances
1305 as well. (thanks to Tobias Rittweiler)
1306 * optimization: binding special variables now generates smaller code
1307 on threaded platforms.
1308 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1309 and cases where no :TEST is given but the compiler can infer that
1310 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1311 * optimization: better LOGNOT on fixnums.
1312 * optimization: modular arithmetic for a particular requested width
1313 is implemented using a tagged representation unless a better
1314 representation is available.
1315 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1316 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1317 for wellformedness and returns a specialized vector. (reported by
1318 Francois-Rene Rideau)
1319 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1320 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1321 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1322 unscheduling timer at the same time as another timer fires.
1323 * bug fix: don't reschedule timers for dead threads.
1324 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1325 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1326 bogus errors if select() was interrupted.
1327 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1329 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1330 * enhancement: cleaner backtraces for interactive interrupts, as
1331 well as other cases where the interesting frames used to be
1332 obscured by interrupt handling frames.
1333 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1334 now supported, and tracing a whole package using (TRACE "FOO") now
1335 traces SETF-functions as well.
1336 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1337 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1338 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1339 * unreadably printed representation of hash-tables now includes
1341 * bug fix: partially fixed #188: type propagation from assignments
1342 is now more efficient.
1343 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1344 'DOUBLE-FLOAT) are not flushable.
1345 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1346 full address of the object, and none of the tag bits.
1347 * bug fix: readably printing hash-tables now respects other printer
1348 control variables. (reported by Cedric St-Jean)
1349 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1350 keyword with MAKE-HASH-TABLE.
1351 * bug fix: export SB-POSIX:MKSTEMP.
1352 * bug fix: SORT was not interrupt safe.
1353 * bug fix: XREF accounts for the last node of each basic-block as
1355 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1356 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1357 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1358 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1359 create obsolete instances in the case of redefinition or
1360 obsoletion of a superclass. (thanks to Andy Hefner)
1361 * bug fix: Support for the Alpha architecture has been revived; it had
1362 suffered somewhat from lack of maintenance since sbcl-1.0.
1363 * improvements to the Windows port:
1364 ** The system detects the codepage to use at startup, instead of
1365 using the value from the saved core. (thanks to Kei Suzuki)
1367 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1368 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1369 (see documentation for details.)
1370 * revived support for OpenBSD (contributed by Josh Elsasser)
1371 * partially fixed bug #108: ROOM no longer suffers from occasional
1372 (AVER (SAP= CURRENT END)) failures.
1373 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1374 bodies no longer cause a WARNING to be signalled. (reported by
1376 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1377 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1378 the bug in TRUNCATE.) (reported by Michael Weber)
1379 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1380 no samples. (reported by Andy Hefner)
1381 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1382 no longer appear as (NIL ...) frames in backtraces.
1383 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1384 is now actually exported from SB-EXT as documented. (reported by
1386 * bug fix: sb-aclrepl now correctly understands how to inspect
1387 single-floats on 64-bit platforms where single-floats are not boxed.
1388 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1389 yet been finalized. (reported by Levente Meszaros)
1390 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1391 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1392 SBCL-specific optimize qualities.
1394 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1395 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1396 an executable in the search path, and does so in the child
1397 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1398 been removed; it can be found in the CVS history, for somebody who
1399 needs that search behavior (see the manual).
1400 * minor incompatible change: compiler policy re. weakening type
1401 checks has changed: now type checks are weakened only if SAFETY < 2
1403 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1404 unparsing of directory pathnames as files. Analogously,
1405 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1406 filename to parse into a directory pathname.
1407 * enhancement: implicit generic function creation now signals a
1408 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1409 users can bind handlers for and muffle around calls to LOAD.
1410 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1411 to be used (using the default stream external format), and allows
1412 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1413 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1414 strings and vectors whose element-type or simplicity is not fully
1415 known at compile-time.
1416 * optimization: STRING-TRIM and related functions no longer allocate
1417 a new string when no trimming needs to be performed. These functions
1418 are also faster than before when the input string has been declared
1420 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1421 * optimization: READ-LINE is significantly faster for files containing
1423 * optimization: non-open coded uses of character comparison operators
1424 (e.g. char=) no longer cons when called with more than one parameter
1425 on platforms supporting dynamic-extent allocation.
1426 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1427 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1428 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1430 * bug fix: some sequence functions elided bounds checking when
1432 * bug fix: too liberal weakening of union-type checks when SPEED >
1434 * bug fix: more bogus fixnum declarations in ROOM implementation
1437 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1438 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1439 :SYNCHRONIZED argument, which makes the hash-table safe for
1440 concurrent accesses (but not iteration.) See also:
1441 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1442 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1443 * optimization: CONCATENATE on strings is an order of magnitude faster
1444 in code compiled with (> SPEED SPACE).
1445 * optimization: SUBSEQ is ~50% faster on lists.
1446 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1447 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1448 END is smaller then START.
1449 * bug fix: SB-PROFILE will no longer report extra consing for nested
1450 calls to profiled functions.
1451 * bug fix: ROOM implementation had bogus fixnum declarations which
1452 could cause type-errors when calling ROOM on large images.
1453 * bug fix: if file compilation is aborted, the partial fasl is now
1454 deleted, and COMPILE-FILE returns NIL as the primary value.
1455 * bug fix: number of thread safety issues relating to SBCL's internal
1456 hash-table usage have been fixed.
1457 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1458 be returned from its body when the values were being returned
1459 using unknown-values return convection and the W-P-O was wrapped
1460 inside an UNWIND-PROTECT.
1461 * bug fix: sb-posix should now compile again under Windows, enabling
1462 slime to work again.
1464 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1465 * incompatible change: hash-table accessor functions are no longer
1466 automatically protected by locks. Concurrent accesses on the same hash-table
1467 from multiple threads can give inconsistent results or even corrupt the
1468 hash-table completely. Multi-threaded applications should do their own
1469 locking at the correct granularity. In the current implementation it is
1470 still safe to have multiple readers access the same table, but it's not
1471 guaranteed that this property will be maintained in future releases.
1472 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1473 and will signal an error at runtime.
1474 * enhancement: SB-THREAD package now exports a semaphore interface.
1475 * enhancement: CONS can now stack-allocate on x86 and
1476 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1478 * enhancement: nested lists can now be stack allocated on
1479 platforms providing stack allocation support.
1480 * enhancement: dynamic-extent support has been extended to support
1481 cases where there are multiple possible sources for the stack
1483 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1484 if the mutex is uncontested on Linux.
1485 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1486 as specified by the CLHS. (thanks to Tobias Rittweiler)
1487 * bug fix: NaN comparison now works on x86-64.
1488 * bug fix: CLOSE :ABORT T on a stream with pending output now
1490 * bug fix: instances of non-standard metaclasses using standard
1491 instance structure protocol sometimes missed the slot type checks
1493 * bug fix: known functions can be inlined in high-debug code.
1495 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1496 * minor incompatible change: the MSI installer on Windows no longer
1497 associates .lisp and .fasl files with the installed SBCL.
1498 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1499 on Windows. (thanks to Luis Oliviera)
1500 * new feature: SB-CLTL2 contrib module now implements
1501 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1502 * optimization: scavenging weak pointers is now more efficient,
1503 requiring O(1) instead of O(N) per weak pointer to identify
1504 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1505 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1506 method bodies using constant slot-names when the first argument is
1507 a specializer parameter for the method.
1508 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1509 names, when the class of the instance is a direct instance
1510 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1511 as slow as the constant slot-name case.)
1512 * optimization: member type construction is now O(N) instead
1514 * optimization: UNION and NUNION are now O(N+M) for large
1515 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1517 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1518 now more readable in environments like Slime which display it.
1519 (thanks to Tobias C. Rittweiler)
1520 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1521 was able to infer the correct argument type for the object on which
1522 the CAS operation was being performed.
1523 * bug fix: copy propagation interfered with parallel assignment
1524 semantics in local calls. (reported by Paul Khuong)
1525 * bug fix: the signed modular fixnum shift compiled to wrong code on
1526 x86 and x86-64. (spotted by a slight modification to some of
1529 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1530 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1531 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1532 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1534 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1535 and generic function now print the object identity for anonymous
1536 instances. (thanks to Attila Lendvai)
1537 * enhancement: as an extension to MOP, SBCL now supports SETF of
1538 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1539 (thanks to Attila Lendvai)
1540 * enhancement: sb-cover has an alternate annotation mode which puts
1541 the form annotations at the car of the form, instead of annotating
1542 it completely. The benefit of this mode is that it shows better
1543 which forms were instrumented by the compiler.
1544 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1545 by printer control variables. (reported by Dan Corkill)
1546 * bug fix: system leaked memory when delayed output was performed by
1547 the OS in smaller chunks then expected. (thanks to David Smith)
1548 * bug fix: system leaked memory when file streams were not closed
1550 * bug fix: large objects written to slow streams that were modified
1551 after the write could end up with the modified state written to
1552 the underlying file descriptor.
1553 * bug fix: multiple threads operating in parallel on the same stream
1554 could cause buffer-overflows.
1555 * bug fix: source location information is stored correctly
1556 (broken since 1.0.6). This bug would generally show up as the
1557 Slime debugger highlighting the wrong form when the sldb-show-source
1559 * bug fix: Branch forms are again annotated as branches in the sb-cover
1561 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1562 on x86-64. (reported by Gregory Vanuxem)
1563 * bug fix: EQUALP could return wrong results for structures with raw
1564 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1565 word). (reported by Vjacheslav Fyodorov)
1566 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1569 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1570 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1571 atomic compare-and-swap operations on threaded platforms.
1572 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1573 allows assigning a global minimum value to optimization qualities
1574 (overriding proclamations and declarations).
1575 * enhancement: closed over variables can be stack-allocated on x86
1577 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1579 * optimization: slot definition lookup is now O(1). This speeds up
1580 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1581 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1582 * optimization: ASSOC and MEMBER can now be open-coded for all
1583 combinations of keyword arguments when second argument is constant
1584 and SPEED >= SPACE. In other cases a specialized version is
1586 * bug fix: using obsoleted structure instances with TYPEP and
1587 generic functions now signals a sensible error.
1588 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1589 (reported by Kristoffer Kvello)
1590 * bug fix: backtrace construction is now more careful when making
1591 lisp-objects from pointers on the stack, to avoid creating bogus
1592 objects that can be seen by the GC.
1593 * bug fix: defaulting of values in contexts expecting more than 7
1594 variables now works on x86-64. (reported by Christopher Laux)
1595 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1597 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1598 as the property-list of a symbol.
1599 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1600 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1601 situations requested, are once again file-compileable. (reported
1604 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1605 * MOP improvement: support for user-defined subclasses of
1606 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1607 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1608 the expansion of DEFMETHOD, is responsible for generating a form
1609 which creates a list of specializers when evaluated. Additional
1610 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1611 debugging and introspective support.
1612 * minor incompatible change: the (unsupported) spinlock interface
1613 has changed: free spinlock now has the value NIL, and a held spinlock
1614 has the owning thread as its value.
1615 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1616 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1618 * enhancement: name of a socket-stream is now "a socket" instead of
1619 "a constant string".
1620 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1621 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1622 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1623 for generic functions. (Thanks to Tobias C. Rittweiler)
1624 * optimization: bignum printing speed has been improved by 20-40%
1625 (depending on the bignum size.)
1626 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1628 * bug fix: the cache used by the CLOS to store precomputed effective
1629 methods, slot offsets, and constant return values is now thread and
1631 * bug fix: generic function dispatch function updating is now thread
1632 and interrupt safe (in the sense that the known issues have been
1634 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1635 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1636 * bug fix: asdf systems with dependencies to the SB-POSIX or
1637 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1638 * bug fix: interrupt safety of applicable method computation has been
1641 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1642 * new contrib: sb-cover, an experimental code coverage tool, is included
1643 as a contrib module.
1644 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1645 significantly faster.
1646 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1647 produce more efficient code on x86-64 if the compiler can determine
1648 that (+ INDEX <constant>) does not require a bounds check and FOO
1649 has an element type at least 8 bits wide.
1650 * enhancement: a new, experimental synchronous timeout facility is
1651 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1652 * enhancement: when a symbol name conflict error arises, the
1653 conflicting symbols are always printed with a package prefix.
1654 (thanks to Kevin Reid)
1655 * enhancement: stepping is now once again supported on the SPARC and
1656 MIPS platforms. (It is also now more likely to work on CheneyGC
1658 * enhancement: sb-sprof can now also track and report accurate call
1660 * bug fixes: the treatment of non-standard subclasses of
1661 SB-MOP:SPECIALIZER is more correct.
1662 * incompatible change: PURIFY no longer copies the data from the
1663 dynamic space into the static and read-only spaces on platforms
1664 that use the generational garbage collector
1665 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1667 * bug fix: GC race condition occasionally resulting in crashes with
1668 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1670 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1672 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1673 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1674 * bug fix: an asynchronous interrupt could previously leave the
1675 system running with GC inhibited.
1676 * bug fix: a DECLARE form evaluated at top-level now causes an error
1677 rather than silently (or verbosely) returning NIL.
1678 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1679 result in a error being signalled due to source form lookup errors.
1680 (reported by Peter Graves)
1682 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1683 * incompatible change: removed writer methods for host-ent-name,
1684 host-ent-addresses -- changing the values did not update the DNS
1686 * minor incompatible change: changed experimental JOIN-THREAD interface
1687 * documentation: the manual now lists reader and writer methods
1688 in class slot documentation sections. (thanks to Richard M Kreuter)
1689 * documentation: unwinding from asyncronous events has been
1690 documented as unsafe.
1691 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1692 in multithreaded application code.
1693 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1694 platforms. (thanks to James Anderson for the optimization hint)
1695 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1697 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1698 variants no longer cons.
1699 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1700 their NOT- variants no longer cons.
1701 * optimization: EQUAL hash tables no longer use SXHASH for objects
1702 of all data types, but instead use an EQL hash for types for which
1703 EQUAL is the same as EQL.
1704 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1705 are significantly faster.
1706 * optimization: new STRING-OUTPUT-STREAM implementation is much
1707 faster for large outputs and conses 30% less on average.
1708 * enhancement: XREF information is now collected for references made
1709 to global variables using SYMBOL-VALUE and a constant argument.
1710 * enhancement: SIGINT now causes a specific condition
1711 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1712 * bug fix: FILE-POSITION used to signal an error in some cases where
1713 ANSI requires it to return NIL.
1714 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1715 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1716 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1718 * bug fix: bad type declaration in the CLOS implementation has
1719 been fixed. (reported by James Anderson)
1720 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1721 (thanks to Lutz Euler)
1722 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1723 required by the CLHS. (reported by Samium Gromoff)
1724 * bug fix: dead unbound variable references now signal an error.
1725 (reported by Marco Monteiro)
1726 * bug fix: / with an unused value was being deleted in safe code.
1727 (thanks to Marco Monteiro and Kevin Reid)
1728 * bug fix: number of characters that can be written onto a single
1729 line in a file is unlimited.
1730 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1731 been fixed by inhibiting interrupts for when GC is disabled.
1732 * bug fix: some interrupt safety issues with GETHASH, (SETF
1733 GETHASH), CLRHASH and REMHASH have been fixed.
1734 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1735 specifier no longer causes infinite recursion.
1736 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1737 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1738 * bug fix: an &environment argument with the correct variable information
1739 is passed to macros that are expanded during byte compilation.
1740 (reported by Samium Gromoff)
1741 * bug fix: a logic error was causing the hash function for bignums to
1742 have excessive amounts of collisions. (reported by Faré Rideau)
1743 * bug fix: modifying the contents of an array could change the return
1744 value of SXHASH on that array, which is only allowed for strings
1745 and bit vectors. (bug introduced in 0.9.16)
1746 * improvement: the x86-64/darwin port now passes all tests (except
1747 for the debugger tests) but should still be considered
1748 experimental until this is fixed.
1749 * improvement: a style-warning is signaled for CASE (etc) clauses with
1750 duplicate keys. (thanks to Kevin Reid)
1751 * improvement: macos/x86 and macos/x86-64 now use mach exception
1752 handlers for dealing with illegal instructions (for trapping and
1753 error handling) and memory protection violations (for GC).
1755 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1756 * new platform: experimental support for x86-64/darwin (MacOS).
1757 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1758 and getnameinfo sockets functions are used instead of gethostbyaddr
1759 and gethostbyname, on platforms where the newer functions are available.
1760 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1762 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1763 don't print the startup banner, but behave as if --noinform was passed
1764 as a command line argument. (thanks to Kevin Reid)
1765 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1766 * optimization: code using alien values with undeclared types is much faster.
1767 * optimization: the compiler is now able to open code SEARCH in more cases.
1768 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1769 * bug fix: using standardized COMMON-LISP special variables as loop
1770 variables no longer signals bogus package lock violations. (reported
1772 * bug fix: declaring local loop variables to be of a range-limited type
1773 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1774 (reported by Andras Simon)
1775 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1776 bugs remain on x86-64.)
1777 * bug fix: the #= and ## reader macros now interact reasonably with
1778 funcallable instances.
1779 * bug fix: type-checks for function arguments were compiled using the
1780 compiler policy settings of the wrong lexical environment (in 1.0.2
1782 * bug fix: SHADOW accepts characters as string designators, as required
1783 by the spec (thanks to Eric Marsden)
1784 * bug fix: fixed GC safety issues when foreign functions are called with
1785 non-base strings as arguments
1786 * bug fix: more consistent error output for fatal-compiler-warnings, like
1788 * bug fix: functions with proper names were showing up as NIL in
1789 backtraces (reported by Edi Weitz, regression in 1.0.2)
1791 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1792 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1793 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1794 produce more efficient code on the x86 if the compiler can determine
1795 that (+ INDEX <constant>) does not require a bounds check and FOO
1796 has an element type at least 8 bits wide.
1797 * bug fix: references to undefined variables are handled the same way
1798 in toplevel forms as in the normal compiler
1799 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1801 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1802 (thanks to Jon Buller)
1803 * improvement: faster compilation times for complex functions
1804 * improvement: added readlink support to SB-POSIX (thanks to Richard
1807 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1808 * improvement: experimental support for mach exception handling on
1809 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1811 * improvement: support for GBK external format.
1812 (thanks to Chun Tian (binghe))
1813 * improvement: the debugger now displays variables that have been closed
1814 over, in code compiled with (DEBUG 2) or higher
1815 * improvement: support for executable cores on NetBSD (thanks to
1817 * new feature: added a RESTART-FRAME debugger command
1818 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1819 be used to provide an implementation for FILE-POSITION on Gray streams
1820 (thanks to Eric Marsden)
1821 * new feature: add syslog, openlog and closelog support to SB-POSIX
1822 (thanks to Richard Kreuter)
1823 * optimization: the function call overhead in code compiled with
1824 a high DEBUG optimization setting is significantly
1825 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1826 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1827 (thanks to Tony Martinez)
1828 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1829 evaluated once (reported by Kevin Reid)
1830 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1831 works again (thanks to Kilian Sprotte)
1832 * bug fix: an error is signaled for tagbodies with duplicate tags
1833 (thanks to Stephen Wilson)
1834 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1835 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1836 stack frames from alien callbacks.
1837 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1838 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1839 65k pages (thanks to David Woodhouse)
1840 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1842 changes in sbcl-1.0.1 relative to sbcl-1.0:
1843 * new platform: FreeBSD/x86-64, including support for threading.
1844 * new feature: the compiler stores cross-referencing information
1845 about function calls (who-calls), macroexpansion (who-macroexpands)
1846 and special variables (who-binds, who-sets, who-references) for code
1847 compiled with (< SPACE 3). This information is available through the
1848 sb-introspect contrib.
1849 * new feature: users may subclass SEQUENCE, and have instances of
1850 these classes interoperate with standard Common Lisp functions if
1851 a number of methods are defined. (This feature is experimental
1852 and the interface subject to change based on feedback from SBCL
1853 users and the general community)
1854 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1855 x86/x86-64, rather than the previous fixed depth of 8
1856 * improvement: another pthread back-end of mutex "pthread-futex".
1857 * bug fix: non-ascii command-line arguments are processed correctly
1858 (thanks to Yaroslav Kavenchuk)
1859 * bug fix: non-required arguments were not passed correctly when a method
1860 defined using DEFMETHOD was called from a mop-generated method using
1861 CALL-NEXT-METHOD (reported by Pascal Costanza)
1862 * bug fix: recursion is now permitted in accessors through
1863 SLOT-UNBOUND. (reported by Pascal Costanza)
1864 * bug fix: an error was signaled at startup if the HOME environment
1865 variable was defined, but had an empty value (reported by Peter Van Eynde)
1866 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1867 signal a PROGRAM-ERROR, not a BUG.
1868 * bug fix: SB-POSIX:READDIR works when built with large file support.
1869 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1871 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1872 for better automatic indentation support. (thanks to Matt Pillsbury)
1873 * optimization: loading generic functions no longer takes O(n^2) time,
1874 proportional to the amount of methods in the generic function
1875 (reported by Todd Sabin and Jeremy Brown)
1876 * optimization: the FIND and POSITION family of sequence functions
1877 are significantly faster on arrays whose element types have been
1879 * improvements to the Windows port:
1880 ** Intermittent heap corruption problems have been fixed. (thanks
1881 to Alastair Bridgewater)
1882 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1884 ** Lisp is able to unwind foreign exception frames from alien
1885 callbacks. (thanks to Alastair Bridgewater)
1887 changes in sbcl-1.0 relative to sbcl-0.9.18:
1888 * improvement: experimental support for threading on FreeBSD/x86.
1889 (thanks to NIIMI Satoshi)
1890 * improvement: runtime option --dynamic-space-size can be used
1891 to set the size of the dynamic space reserved on startup.
1892 * improvement: floating point modes in effect are now saved in
1893 core, and restored on startup.
1894 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1895 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1896 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1897 threads are not running after *SAVE-HOOKS* have run.
1898 * improvement: writes to CLOS instance slots are type-checked in code
1899 compiled with (SAFETY 3)
1900 * improvement: floating-point exception handling on FreeBSD (thanks to
1902 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1903 (thanks to Zach Beane)
1904 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1906 * improvement: added support for the Shift-JIS external format.
1907 (contributed by NIIMI Satoshi)
1908 * improvement: callbacks are supported on Linux/PPC. (thanks to
1910 * bug fix: compiler bug triggered by a (non-standard) VALUES
1911 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1912 * bug fix: file compiler no longer confuses validated and already
1913 dumped structurres. (reported by Kaersten Poeck)
1914 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1915 fill-pointer signals a type-error as required. (thanks to
1917 * bug fix: disassemly of funcallable instances works.
1918 * bug fix: single stepping on PPC.
1919 * bug fix: fix thread-safety problems in the type system (generally
1920 manifesting as nonsensical errors like "STRING is a bad type specifier
1921 for sequences" or "The value 1 is not of type FIXNUM")
1922 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1923 (reported by Josip Gracin)
1924 * bug fix: an error is signaled for attempts to displace arrays with
1925 incompatible element types (thanks to Mario Mommer)
1926 * bug fix: more correct handling of wide characters in debug info
1927 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1928 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1929 and don't cause extra consing
1930 * optimization: MAP and MAP-INTO are significantly faster on vectors
1931 whose elements types have been declared.
1932 * Improvements to SB-SPROF:
1933 ** Support for allocation profiling
1934 ** Reduced profiling overhead, especially for long profiling runs
1935 * Improvements to the Windows port:
1936 ** floating point exceptions are now reported correctly.
1937 ** stack exhaustion detection works partially.
1938 ** more accurate GET-INTERNAL-REAL-TIME.
1939 ** better RUN-PROGRAM behaviour in case of errors in the child
1941 ** PROBE-FILE now simplifies pathnames correctly.
1942 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1943 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1944 1st 1970 (although time timezone data will be unreliable).
1945 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1947 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1948 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1949 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1951 * bug fix: two potential GC deadlocks affecting threaded builds.
1952 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1953 returns T (reported by Anton Kazennikov)
1954 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1955 with non-variable places
1956 * bug fix: remove a race condition in the setting of
1957 funcallable-instance functions, this should make threaded CLOS
1958 code more stable against memory faults.
1959 * bug fix: corruption of specials when unbinding is interrupted by an
1960 asynchronous unwind (reported by Hannu Koivisto)
1961 * improvement: the debugger will now also display local variables that
1962 are only used once, for code compiled with a DEBUG optimization quality
1965 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1966 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1967 * incompatible change: External-format support for FFI calls. The
1968 SB-ALIEN:C-STRING no longer implies an ASCII
1969 external-format. Instead the string is subject to external-format
1970 conversion. Additionally return values of type SB-ALIEN:C-STRING
1971 are by default of type (SIMPLE-ARRAY CHARACTER), not
1972 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1973 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1974 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1975 * incompatible change: SB-EXT package no longer contains the
1976 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1977 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1979 * incompatible change: the single-stepper is no longer available
1980 on Alpha, Mips and Sparc platforms.
1981 * minor incompatible change: the direct superclasses of
1982 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1983 not (STANDARD-OBJECT FUNCTION). This makes the
1984 class-precedence-lists of GENERIC-FUNCTION and
1985 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1987 * minor incompatible change: the default stream external format on
1988 non-unicode SBCL is no longer detected from the locale, but is always
1990 * new feature: Add a version of evaluator that uses an interpreter instead
1991 of the compiler. EVAL still uses the compiler by default, to switch it
1992 to use the interpreter, set the value of the variable
1993 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1994 * minor incompatible change: the single-stepper REPL has been merged
1995 with the normal debugger (see the "Stepping" heading of the debugger help
1996 for more details). The debugger command STEP will no longer switch
1997 to the single-stepper REPL.
1998 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1999 for a type now works.
2000 * bug fix: loading of default sysinit file works. (thanks to Leonid
2002 * bug fix: better detection of circularities in the file-compiler.
2003 (reported by Marco Monteiro)
2004 * bug fix: the CL pathname functions now work with files that have
2005 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2006 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2007 systems with Unix98 pty semantics.
2008 * bug fix: ASDF-INSTALL will now work with bsd tar.
2009 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2011 * bug fix: timers expiring in dead threads no longer cause a
2012 type-error (reported by Paul "Nonny Mouse").
2013 * bug fix: thanks to more lightweight single-stepper instrumentation,
2014 code compiled with (DEBUG 3) will compile and execute significantly faster,
2015 and will have more accurate type-inferencing than before
2016 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2017 whose bindings are modified
2018 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2019 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2020 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2021 CL:SOFTWARE-VERSION with proper version
2023 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2024 * feature: implemented the READER-METHOD-CLASS and
2025 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2026 as specified by AMOP.
2027 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2029 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2030 (thanks to Lutz Euler)
2031 * optimization: hashing of general arrays and vectors has been
2032 improved. (reported by Any Fingerhut)
2033 * enhancement: SB-INTROSPECT is now able to find definitions of
2034 profiled functions. (thanks to Troels Henriksen)
2035 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2036 as well, allowing compiler-macros for SETF-functions to expand.
2037 * enhancement: step-instrumentation no longer wraps known
2038 single-value functions with multiple-value context, allowing
2039 better type inference.
2040 * fixed bug #337: use of MAKE-METHOD in method combination now works
2041 even in the presence of user-defined method classes. (reported by
2042 Bruno Haible and Pascal Costanza)
2043 * fixed bug #339(c): if there are applicable methods not part of any
2044 long-form method-combination group, call INVALID-METHOD-ERROR.
2045 (reported by Bruno Haible)
2046 * fixed bug #361: the :FUNCTION initarg in the protocol for
2047 initialization of methods can now be used to override
2048 internally-produced optimized functions. (reported by Bruno
2050 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2051 system-provided lambda expression no longer cause warnings about
2052 unbound #:|pv-table| symbols.
2053 * bug fix: improved the handling of type declarations and the
2054 detection of violations for keyword arguments with non-constant
2056 * bug fix: potentially erronous calls to PATHNAME and
2057 MERGE-PATHNAMES were being flushed in some cases.
2058 (reported by Richard Kreuter)
2059 * bug fix: compiled calls to TYPEP were mishandling obsolete
2060 instances. (reported by James Bielman and Attila Lendvai)
2061 * bug fix: format strings with ~> without matching ~< no longer
2062 trigger an AVER, but signal an understandable error instead.
2063 (reported by Antonio Martinez)
2064 * bug fix: specifying an output-file without a pathname-type for
2065 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2066 of input-file instead of "fasl". (reported by Robert Dodier)
2067 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2068 (reported by James Y Knight).
2069 * bug fix: compiler-macros-function did not consider the environment
2070 argument for shadowing by local functions.
2071 * bug fix: compiler-macros expansion was inhibited by local INLINE
2073 * bug fix: inline expansions of known functions were subject to
2074 step-instrumentation in high debug policies, leading to problems
2075 with type-inference.
2076 * bug fix: compiler failed to differentiate between different CONS
2077 types in some cases.
2078 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2079 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2080 * bug fix: #368: incorrect use of expressed vs. upgraded array
2082 * bug fix: #306a: more precise unions of array types.
2083 * thread-safety improvements:
2084 ** CONDITION-WAIT could return early on Linux, if the thread was
2085 interrupted and subsequently continued with SIGCONT.
2086 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2088 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2089 * added support for the ucs-2 external format. (contributed by Ivan
2091 * minor incompatible change: pretty printing of objects of type
2092 (cons symbol) is, in the default pprint-dispatch-table, now
2093 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2095 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2096 called later in a class's lifetime, possibly as late as when the
2097 first instance of the class is created. Previously,
2098 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2099 class became finalizeable.
2100 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2101 for multibyte external-format streams. (thanks to "vbzoli")
2102 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2103 with :ALLOCATION :CLASS inherited from superclasses of the
2105 * fixed bug: anonymous classes can now be created using the :NAME
2106 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2107 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2108 * fixed bug: core-files saved with :EXECUTABLE T can again be
2109 executed when SBCL_HOME isn't set. (reported by James Knight)
2110 * fixed bug: toplevel LOCALLY forms with declarations could
2111 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2112 * fixed bug: printing from several different threads using different
2113 values of *print-case* could cause invalid output, due to
2114 some internal special variables of the printer not being bound
2115 thread-locally (reported by Max Mikhanosha)
2116 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2117 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2118 (reported by Pascal Costanza)
2119 * fixed bug: FINALIZE-INHERITANCE is called from
2120 REINITIALIZE-INSTANCE on classes when the class has previously
2121 been finalized, as required by AMOP.
2122 * minor code generation optimizations:
2123 ** better register allocation in CLOS dispatching functions
2124 ** overflow detection when coercing signed bytes to fixnums on x86-64
2125 ** is now implemented with one IMUL instruction instead of three shifts
2126 ** more efficient bit-vector access on x86 and x86-64
2127 ** more efficient access to raw structure slots on x86 and x86-64
2128 * fixed some bugs revealed by Paul Dietz' test suite:
2129 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2130 return its argument.
2132 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2133 * feature: thread support on Solaris/x86, and experimental thread support
2135 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2137 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2138 default method for SLOT-UNBOUND.
2139 * minor incompatible change: prevent the user from specializing the
2140 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2141 somewhat counter to the intent of the protocol, I (CSR) think, and
2142 additionally it just doesn't work in SBCL as currently
2143 implemented, thanks to optimizations (that are always valid for
2144 the other three SLOT-VALUEish functions, but not for the setter).
2145 * minor incompatible change: the :SB-LDB feature is now enabled by
2146 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2147 the low-level debugger.
2148 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2149 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2150 down to an SB-SYS:FD-STREAM, allowing direct communication in
2151 more cases. Temporary files and pipes are still used as a fallback
2153 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2154 on the non-reentrant C functions localtime(3) and gmtime(3).
2155 * bug fix: global optimization policy was not visible in LOCALLY and
2157 * bug fix: class objects can be used as specializers in methods.
2158 (reported by Pascal Costanza)
2159 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2160 with a type error. (reported by blitz_ on #lisp)
2161 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2162 failed with a type error. (reported by Pascal Bourguignon)
2163 * bug fix: merging pathnames against defaults with :DIRECTORY
2164 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2165 (reported by James Y Knight)
2166 * bug fix: saving large (>2GB) cores on x86-64 now works
2167 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2168 constant index and a (simple-array (signed-byte 32)) array
2169 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2170 error (patch by Robert J. Macomber)
2171 * feature: TIME now displays the amount of run-time spent in GC
2172 * bug fix: The debugger now does a better job of respecting
2173 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2174 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2175 workaround for bug 403.)
2176 * bug fix: floating point exception handling now works on FreeBSD
2177 (thanks to NIIMI Satoshi)
2178 * fixed some bugs revealed by Paul Dietz' test suite:
2179 ** MISC.641: LET-conversion were not supposed to work in late
2181 * improvements to the Win32/x86 port:
2182 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2183 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2185 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2186 * new feature: source path information is generated for macro-expansion
2187 errors for use in IDE's like Slime (thanks to Helmut Eller)
2188 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2189 * bug fix: compiler does not loop forever on an invalid type in
2191 * improvement: compilation of most CLOS applications is significantly
2193 * optimization: added a limited bytecode compiler for simple toplevel
2194 forms, speeding up compilation and FASL loading
2195 * bug fix: the statistical profiler now properly distinguishes anonymous
2198 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2199 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2200 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2201 into subclasses of the finalized class. Now user calls to
2202 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2203 system return before any subclasses are finalized.
2204 * minor incompatible change: The reader no longer ignores errors
2205 regarding non-existent packages in #+ and #- feature tests.
2206 * new feature: command line options --no-sysinit, --no-userinit to
2207 inhibit loading the corresponding init files
2208 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2209 for sending data through UDP sockets (thanks to François-René Rideau)
2210 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2211 error is signalled instead (thanks to François-René Rideau)
2212 * minor incompatible change: Error signalling behaviour of lexical
2213 operations violating package locks has changed slightly. Refer to
2214 documentation on package locks for details.
2215 * enhancement: EVAL can process IF-expressions without resorting to the
2217 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2218 constant-folded properly due to missing out-of-line functions.
2219 (reported by Mika Pihlajamäki)
2220 * bug fix: LISTEN sometimes returned T even in cases where no data was
2221 immediately available from the stream
2222 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2223 were reversed. (reported by Levente Mészáros)
2224 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2225 when given a vector displaced to an adjustable array. (reported
2227 * bug fix: derivation of float boundaries from numbers outside the
2228 appropriate float range (reported by John Wiseman)
2229 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2231 * bug fix: precomputing cache entries for generic functions with
2232 some subclasses of specializers as yet invalid does not attempt to
2233 fill a cache line with a negative offset. (reported by Levente
2235 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2236 allow condition class objects as arguments to DOCUMENTATION and
2237 (SETF DOCUMENTATION); only find and set documentation for
2238 structure names for the STRUCTURE doc-type. (suggested by Gary
2240 * improvements to the Win32/x86 port:
2241 ** (user-homedir-pathname) and default initialization file
2242 locations now know about the user's "Documents and Settings"
2243 directory (thanks to Yaroslav Kavenchuk)
2244 ** run-program is implemented (thanks to Mike Thomas)
2245 ** sockets support (thanks to Timothy Ritchey)
2246 ** better backtrace support (thanks to Alastair Bridgewater)
2247 ** sb-grovel supported
2248 ** asdf-install and sb-posix work somewhat
2249 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2250 * improvements to the Solaris/x86 port:
2251 ** works on Solaris 11/Solaris Express
2252 ** floating-point exception handling support
2253 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2254 * fixed some bugs revealed by Paul Dietz' test suite:
2255 ** REMOVE-METHOD returns its generic function argument even when
2256 the method is not one of the generic functions' methods.
2257 ** objects declared as MEMBER types can be admissible arguments to
2258 structure accessors.
2259 ** printing characters should simply be printed by the FORMAT ~:C
2261 ** compiler failure when compiling functions with hairy constant
2262 defaults for optional parameters.
2263 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2264 function, which is already optimized.
2266 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2267 * new platform: experimental support for SBCL x86/Darwin, including
2268 MacOS X 10.4.5 on Intel.
2269 * new feature: Unicode character names are now known to the system
2270 (through CHAR-NAME and NAME-CHAR).
2271 * new feature: the filesystem location of SBCL's core file is
2272 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2273 * minor incompatible change: the contrib modules SB-POSIX and
2274 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2275 this change is to make it easier to distribute
2276 location-independent binaries.
2277 * bug fix: as implied by AMOP, standardized classes no longer have
2278 slots named by external symbols of public packages. (reported by
2280 * optimization: calling functions via constant symbols -- as in
2281 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2282 via the function object as in (FUNCALL #'FOO).
2283 * optimization: on x86 and x86-64, the calling convention for the
2284 case of dealing with an unknown number of values has been altered
2285 to be friendlier to the prediction heuristics implemented,
2286 particularly with reference to CALL and RET pairing. (thanks to
2287 Alastair Bridgewater)
2288 * optimization: on x86, the code for access to thread-local symbol
2289 values and binding/unbinding of thread-local symbols is smaller.
2290 (thanks to Alastair Bridgewater)
2291 * enhancement: CONSTANTP is now able to determine constantness of
2292 more complex forms, including calls to constant-foldable standardized
2293 functions and some special forms beyond QUOTE.
2294 * fixed bug: occasional GC crashes on Solaris/x86
2295 * optimization: x86-64 supports stack allocation of results of simple
2296 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2297 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2298 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2299 (thanks to James Knight)
2300 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2301 by the standard (thanks to Stephen Compall)
2303 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2304 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2305 be used for bundling the runtime and the core file into one
2306 executable binary. This feature is not currently supported on all SBCL
2307 platforms. (thanks to James Bielman and NIIMI Satoshi)
2308 * new feature: a generational or ephemeral garbage collector is now
2309 the default on the PowerPC platform (both Linux and Darwin). The
2310 old Cheney (stop and copy) collector is a build-time option.
2311 (thanks to Cyrus Harmon, after Raymond Toy)
2312 * minor incompatible change: the method by which SBCL finds its
2313 contributed modules has changed; it no longer relies on symbolic
2314 links from an $SBCL_HOME/systems directory, but searches directly
2315 in the subdirectories of $SBCL_HOME.
2316 * enhancement: the dynamic heap size on the Linux/PPC platform is
2317 markedly larger, even using the older Cheney garbage collector.
2318 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2319 certain complicated string types. (reported by Gary King)
2320 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2321 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2322 * fixed bug: DOCUMENTATION on structures no longer signals an
2323 error if no structure type of the right name exists. (reported by
2325 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2326 applicable non-standard primary or :AROUND method on
2327 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2328 no longer cause unbound variable errors. (reported by Kevin Reid)
2329 * fixed bug: metacircle resolution in cases where methods have slots
2330 added before the slots from STANDARD-METHOD. (reported by Jean
2332 * fixed bug: the Power PC assembly code for calling into lisp
2333 sometimes computed its return address wrongly (depending on the
2334 15th bit of the address, fixed at link time). This used to
2335 manifest itself in a segmentation violation while building PCL.
2336 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2337 many others over the years)
2338 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2339 the stack pointer (treated as a signed integer) is negative.
2340 (thanks to Peter van Eynde)
2342 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2343 * new platform: experimental support for the Windows operating
2344 system has been added. (thanks to Alastair Bridgewater)
2345 * fixed several bugs in and robustified the PPC FFI (including
2346 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2347 * bug fix: allow non-simple string symbol names (reported by Paul
2349 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2351 * bug fix: saving a core corrupted callbacks on x86/x86-64
2352 * bug fix: closed a loophole in metacircularity detection and
2353 grounding in the PCL implementation of CLOS.
2354 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2355 (reported by tomppa on #lisp)
2356 * bug fix: clear the direction flag on Lisp -> C transitions, as
2357 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2358 (reported by Andrej Grozin and Hendrik Maryns)
2359 * optimization: major improvements to GC efficiency on GENCGC platforms
2360 * optimization: faster implementation of EQUAL
2361 * optimization: emit more efficient opcodes for some common
2362 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2363 * optimization: several other minor code-generation improvements on x86-64
2364 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2366 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2367 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2368 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2369 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2370 by ANSI as a generic function, and for consistency (SETF
2371 GENERIC-FUNCTION-NAME) is treated likewise.
2372 * fixed bug #233.b: make constraint propagation notice when a variable
2373 value is changed after it is referenced but before it is used
2374 * fixed bug #296: no more arbitrary behaviour from filenames with
2375 odd characters as --load arguments. (reported by Adam Warner)
2376 * fixed bug #390: :CHARACTER-SET pathname components now work as
2377 expected. (reported by Tim Daly Jr)
2378 * fixed bug #391: complicated :TYPE intersections in slot
2379 definitions no longer cause an error in PCL internals.
2380 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2381 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2382 returning the number of octets which would be written to the
2383 file-stream. (thanks to Robert J. Macomber)
2384 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2385 arguments to the internal stream functions. (thanks to David
2387 * bug fix: stack exhaustion is now handled on the x86/SunOS
2388 platform. (thanks to Daisuke Homma)
2389 * bug fix: more accurate ROOM results on GENCGC platforms
2390 * optimization: improved type inference for arithmetic-for
2391 index variables in LOOP
2392 * optimization: faster floating-point SQRT on x86-64
2393 * fixed some bugs revealed by Paul Dietz' test suite:
2394 ** DOCUMENTATION returns NIL instead of "" for method combinations
2395 that don't have a docstring
2397 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2398 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2399 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2400 therefore are not customizeable by user code (as seems to be at
2401 least permitted and maybe required by AMOP). As a consolation,
2402 however, the SBCL implementation of these functions now calls
2403 REINITIALIZE-INSTANCE as specified by AMOP.
2404 * bug fix: slot-definition documentation is propagated as per ANSI
2405 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2406 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2407 argument, as do eslotd initialization methods. (from Pascal
2408 Costanza's "Closer" project)
2409 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2410 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2412 * bug fix: it is now possible to have more than one subclass of
2413 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2414 (reported by Bruno Haible, Pascal Costanza and others)
2415 * bug fix: the dependent update protocol now works for generic
2416 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2417 and Pascal Costanza)
2418 * bug fix: condition-class instances corresponding to
2419 DEFINE-CONDITION forms are now created eagerly. (reported by
2420 Kalle Olavi Niemitalo on comp.lang.lisp)
2421 * bug fix: floating point printing is more accurate in some
2422 circumstances. (thanks to Simon Alexander)
2423 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2424 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2425 * bug fix: callbacks on OS X now preserve stack-alignment.
2426 (thanks to Cyrus Harmon)
2427 * enhancement: the x86-64 disassembler is much better at
2428 disassembling SSE instructions. (thanks to Lutz Euler)
2429 * enhancement: CHECK-TYPE on a variable now allows type-inference
2430 (thanks to Vincent Arkesteijn)
2431 * optimization: improved performance of EUC-JP external format.
2432 (thanks to NIIMI Satoshi)
2433 * optimization: performance improvements to IO on file streams of
2434 :ELEMENT-TYPE CHARACTER
2435 * optimization: much faster memory allocation on x86-64
2436 * optimization: faster garbage collections (latency and throughput)
2438 * optimization: faster bignum subtraction and division on x86 and x86-64
2439 (thanks to Lutz Euler)
2440 * optimization: more accurate type-inference for loops that use a
2441 floating point index variable or a negative step.
2443 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2444 * bug fix: add a workaround to SBCL looping infinitely at startup on
2445 Linux kernels with apparently buggy implementations of personality().
2446 (thanks to Svein Ove Aas)
2447 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2448 (thanks to David Lichteblau)
2449 * bug fix: local bindings shadow global symbol macros for
2450 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2451 * optimization: non-open coded uses of numeric comparison operators
2452 (e.g. >) no longer cons when called with more than one parameter
2453 on platforms supporting dynamic-extent allocation.
2454 * enhancement: saving cores with foreign code loaded is now supported
2455 on MIPS/Linux in addition to the previously supported platforms.
2456 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2457 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2458 * bug fix: division by zero in sb-sprof when no samples were collected
2459 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2460 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2461 (thanks to Alexander Kjeldaas)
2462 * new feature: ignoring the return values of destructive functions
2463 like NREVERSE signals a compile-time style-warning.
2464 (thanks to Kevin Reid)
2465 * new feature: the alignment of alien structure fields can be
2466 explicitly specified. (thanks to Cyrus Harmon)
2467 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2468 and dump core on SIGQUIT
2470 ** incompatible change: threads do not inherit values of specials
2471 from their parents (see manual)
2472 ** bug fix: threads stacks belonging to dead threads are freed by the
2473 next exiting thread, no need to gc to collect thread stacks anymore
2474 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2475 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2476 ** bug fix: dynamic variable and thread start related gc lossage
2477 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2479 * fixed some bugs revealed by Paul Dietz' test suite:
2480 ** SUBTYPEP is slightly more accurate on heinously complicated
2481 CONS types where some of the members have uncertain (in the
2482 NIL, NIL sense) type relationships to each other.
2484 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2485 no longer purified unless :PURIFY T is explicitly specified.
2486 ** Non-purified cores are significantly smaller than before
2488 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2489 * new feature: timers based on Zach Beane's excellent timer package
2490 * added support for the following external formats: koi8-u,
2491 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2492 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2493 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2494 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2495 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2496 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2497 * incompatible change: a threaded SBCL will no longer revert to
2498 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2499 * bug fix: interrupts are disabled until startup is complete; no
2500 more sigsegvs when receiving a signal to soon
2501 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2503 * bug fix: add a workaround for the memory randomization features in
2504 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2505 workaround will only be in effect on systems with the proc filesystem
2507 * bug fix: printing objects of type HASH-TABLE signals a
2508 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2510 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2511 have been running for over 50 days. (reported by Gilbert Baumann)
2512 * bug fix: the logic for getting names of functions gets less
2513 confused when confronded with alternate-metaclass
2514 funcallable-instances. (reported by Cyrus Harmon)
2515 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2516 consistent, even on internal alternate-metaclass objects.
2517 * bug fix: flush closure information collected by physical
2518 environment analysis prepass before the main pass. (bug reported
2520 * bug fix: compiler pack phase does not modify a hashtable, which is
2521 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2522 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2523 may be expanded. (reported by Alexander <malishev> on c.l.l)
2524 * bug fix: no more style-warnings when compiling code using LAST
2525 under high-SPEED low-SPACE settings. (reported by David Wallin
2527 * fixed some incompatibilities between SBCL's MOP and the MOP
2529 ** the METAOBJECT class is now implemented;
2530 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2531 STANDARD-OBJECT, as required;
2532 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2533 now compatible (as required by VALIDATE-SUPERCLASS); there
2534 remains a consistency requirement over the presence or absence
2535 of the FUNCTION class in the superclass list of finalized
2536 classes; see the manual for more details;
2537 ** the :AROUND method for COMPUTE-SLOTS on
2538 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2539 requested slot ordering.
2541 ** bug fix: parent thread now can be gc'ed even with a live
2543 ** bug fix: binding a special with PROGV to no value is not
2544 the same as that symbol not having been bound (thanks to
2546 ** bug fix: binding specials is thread safe (thanks to
2548 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2549 and SB-SPROF do not die with 'no handler for signal XX in
2550 interrupt_handle_now(..)' anymore
2551 ** bug fix: WITH-TIMEOUT works with multiple running threads
2552 * fixed some bugs revealed by Paul Dietz' test suite:
2553 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2554 the :method-class keyword argument.
2556 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2557 * new port: the Solaris operating system on x86 processors is now
2558 mostly supported, though some rough edges in the environment
2559 remain. (thanks to Daisuke Homma)
2560 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2561 space for its heap. (thanks to Thiemo Seufer)
2562 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2563 closures. (thanks to Thiemo Seufer)
2564 * minor incompatible change: eof selects abort in the debugger.
2565 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2566 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2568 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2569 deprecated, and will go away in a future revision of SBCL.
2570 * minor incompatible change: GC-ON and GC-OFF are no longer
2571 implemented with a counter, it does not matter how many times gc
2572 is switched on or off
2573 * bug fix: discriminating functions for generic function classes
2574 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2575 make invalid assumptions about method precedence order. (reported
2577 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2578 platforms. (thanks to Thiemo Seufer)
2579 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2580 * bug fix: correct pathname printing with printer escaping is on.
2581 (thanks to Kevin Reid)
2582 * bug fix: complex VOP definitions in "user-space" no longer trigger
2583 package locks. (reported by Zach Beane)
2584 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2585 for funcallable-instance functions, and is no different from
2587 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2588 characters in the current readtable. (reported by Nicholas Neuss)
2589 * bug fix: SUBTYPEP on various CONS types returns more a more
2590 accurate acknowledgment of its certainty.
2591 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2592 lists in some cases. This partially fixes bug 384.
2593 * flush all standard streams before prompting in the REPL and the
2595 * bug fix: signal handling and triggering gc do not conflict
2596 directly anymore, in particular a high frequency sb-sprof does
2597 not prevent gc from running
2598 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2599 approximation for timezone and DST information between the
2600 universal time epoch and the smallest negative 32-bit time_t.
2601 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2602 year 1899 so long as the encoded time is non-negative.
2603 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2604 the correct answer for non-constant rotate amounts when performing
2605 an inline 32-bit rotation.
2607 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2608 there is only one thread in the session
2609 ** bug fix: memory leak for streams created in one thread and
2610 written to in another
2611 ** bug fix: lockup when compiled with gcc4
2612 ** bug fix: race that allows the gc to be triggered when gc is
2614 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2615 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2617 ** bug fix: finished threads are gc'ed properly
2618 * fixed some bugs revealed by Paul Dietz' test suite:
2619 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2620 has arguments with a different set of applicable methods from
2621 the orignal arguments.
2622 ** The type error thrown by MAP now has a correct expected-type
2624 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2625 name a compiled function.
2626 ** Three MISC tests where a large bignum was improperly coerced to
2627 a float that couldn't represent that bignum during type
2628 derivation were fixed.
2629 ** SUBTYPEP can now handle types involving the negation of a
2630 list-form FUNCTION type.
2631 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2632 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2633 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2635 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2636 * New feature: Experimental support for bivalent streams: streams
2637 opened with :element-type :default now allow character and binary
2638 (unsigned-byte 8) I/O
2639 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2640 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2642 * bug fix: no more highly sporadic "couldn't check whether ~S is
2643 readable" when reading a stream and an interrupt hits in the middle
2644 of a select system call
2645 * compiler better recognizes complex arrays (reported by Eduardo
2647 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2648 for variables on SBCL built with linkage-tables. (reported by Luis
2650 * various error reporting improvements.
2651 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2652 (Thanks to Thiemo Seufer)
2653 * bug fix: nested reader invokations work correctly
2654 * bug fix: it is possible to have simultaneous references to foreign
2655 code and foreign data with the same name.
2657 ** added x86-64 support
2658 ** incompatible change: the threading api now works with thread
2659 objects instead of thread ids
2660 ** bug fix: threads are protected from signals and interruption when
2661 starting up or going down
2662 ** bug fix: a race where an exiting thread could lose its stack to gc
2663 ** bug fix: don't halt on infinite error in threads if possible
2664 ** fixed numerous gc deadlocks introduced in the pthread merge
2665 ** bug fix: fixed thread safety issues in read and print
2666 ** bug fix: debugger doesn't hang on session lock if interrupted at
2667 an inappropriate moment
2668 ** bug fix: run-program is now thread safe(r)
2669 ** bug fix: inner with-recursive-lock no longer releases the mutex
2670 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2671 * fixed some bugs revealed by Paul Dietz' test suite:
2672 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2673 EXPECTED-TYPE slots filled.
2674 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2676 ** MAKE-CONDITION accepts classes as type-designators.
2677 ** COMPILE may never return NIL.
2678 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2679 range before calling Unix time functions
2681 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2682 * numerous signal handling fixes to increase stability
2683 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2684 * minor incompatible change: we now correctly canonize default
2685 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2686 as per the MOP, rather than the historical (INITARG INITFUNCTION
2687 INITFORM). (reported by Bruno Haible)
2688 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2689 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2690 for more information.
2691 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2692 pathname is a directory pathname.
2693 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2694 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2696 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2697 :METACLASS argument in addition to a class name. (reported by
2698 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2699 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2700 (reported by Bruno Haible; patch from Gerd Moellmann)
2701 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2703 * bug fix: more cleanups to the floating point exception handling on
2704 x86-64 (thanks to James Knight)
2705 * bug fix: the compiler does not try to constant fold calls of
2706 COERCE and BIT-* functions when they return freshly constructed
2707 objects. (reported by Nikodemus Siivola and Paul Dietz)
2708 * optimization: improved the MIPS versions of generic (in the
2709 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2710 * optimization: direct conversion of (unsigned-byte 32) to floats on
2711 the PowerPC platform.
2712 * optimization: structure instances with raw slots now use less
2713 memory, and probably show better memory locality. (thanks to
2715 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2716 are treated as requests for stack allocation on the x86-64,
2717 Alpha-32, PPC and SPARC platforms.
2718 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2719 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2720 (thanks to Tony Martinez)
2722 ** gcing a dead thread can no longer lead to lockups
2723 ** threads block signals until they are set up properly
2724 ** errno is no longer shared by threads
2725 ** interrupt-thread restores the eflags register on x86
2726 ** fixed some lockups due to gc/thread interaction
2727 * fixed some bugs revealed by Paul Dietz' test suite:
2728 ** invalid dotted lists no longer raise a read error when
2729 *READ-SUPPRESS* is T
2730 ** signal an error if a symbol that names a declaration is used
2731 as the name of a type, or vice versa
2732 ** allow using the (declare (typespec var*)) abbreviation for
2733 (declare (type typespec var*)) with all type specifiers
2734 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2735 ** always return NIL from PPRINT-POP when OBJECT is NIL
2736 ** don't signal errors when pretty-printing malformed LABELS,
2737 FLET or MACROLET forms
2738 ** declarations in a DOLIST body are also in scope for the
2740 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2742 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2745 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2746 * fixed cross-compiler leakages that prevented building a 32-bit
2747 target with a 64-bit host compiler.
2748 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2749 opened with :IF-EXISTS :OVERWRITE.
2750 * fixed bug 281: error for an invalid qualifier in a short-form method
2751 combination method is not signalled until the faulty method is called.
2752 * bug fix: iteration variable type inferrer failed to deal with open
2753 intervals. (reported by Alan Shields)
2754 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2755 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2756 or more runtime options were provided to the sbcl binary.
2757 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2758 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2759 * optimization: there's now a fast-path for fixnum arguments in the
2760 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2761 * optimization: the code generated on x86-64 is more compact thanks
2762 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2763 * bug fix: floating-point exception handling now partly works on
2764 x86-64. (Thanks to James Knight)
2765 * improvement to the MIPS backend from Thiemo Seufer: C-style
2766 64-bit long long arguments and return values to alien functions
2768 * fixed some bugs revealed by Paul Dietz' test suite:
2769 ** the type-error signalled from WARN has a filled-in DATUM slot.
2770 ** the type-error required when a stream is not associated with
2771 a file has the stream as its datum.
2772 ** type-errors on single-floats on x86-64 no longer have
2773 :INVALID-OBJECT as the datum
2774 ** the type-errors signalled for invalid function names now have
2775 a correct expected type
2776 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2777 for structures defined with a :TYPE. Documentation strings for
2778 typed structures are no longer immediately discarded
2779 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2780 broadcast streams and synonym streams. FILE-LENGTH now also works
2781 on broadcast streams.
2783 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2784 * incompatible change: the --noprogrammer option, deprecated since
2785 version 0.7.5, has been removed. Please use the equivalent
2786 --disable-debugger option instead.
2787 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2789 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2790 inoperational for a while now) has been completely removed.
2791 * null lexical environments are now printed as #<NULL-LEXENV>,
2792 significantly reducing the amount of clutter in typical backtraces.
2793 * documentation on weak pointers, finalization, and after GC hooks
2794 has been added to the manual.
2795 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2796 as other specialized array types, is much faster. SUBSEQ and
2797 COPY-SEQ on such arrays have also been sped up.
2798 * optimization: EQL is now more efficient when at least other argument
2799 is known to be of type (OR FIXNUM (NOT NUMBER)).
2800 * fixed bug: the runtime is now less vulnerable to changes in the
2801 size of the SBCL object on OS X, and virtual memory is reserved for
2802 all spaces that need to be at a fixed address.
2803 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2804 * fixed bug: finalizers and after GC hooks that cause consing are now
2806 * fixed bug: compiler error messages and summaries are now printed to
2807 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2808 * fixed inference of the upper bound of an iteration variable.
2809 (reported by Rajat Datta).
2810 * fixed bug 211e: calling local functions with duplicated constant
2811 keyword argument no longer causes a bogus style warning about an
2813 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2814 ftype declaration to be disregarded. (reported by Dave Roberts)
2815 * fixed bug 373: caused by erronous compilation of references to alien
2816 variables in the runtime on ppc/darwin.
2817 * fixed bug 376: CONJUGATE type deriver.
2818 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2819 (reported by Baughn on #lisp)
2820 * a cross-compiler bug on non-x86 platforms has been identified and
2821 fixed. (thanks to Bruno Haible)
2822 * improvements to the MIPS runtime code for increased stability.
2823 (thanks to Thiemo Seufer)
2824 * increased the maximimum compact environment size to allow
2825 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2826 * partial workaround for bug 135: don't name the function we're
2827 calling for hairy cases of EVAL, so as not to accumulate one environment
2828 entry per call to EVAL. (reported by Kevin Reid)
2829 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2830 * optimization: type testing for non-vector arrays should be faster.
2831 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2833 * bug fix: setting 31st element of a bit vector to zero did not work
2835 * bug fix: redefining a class definition which failed due to a
2836 previous accessor / function clash now works (but see BUGS entry
2837 #380 for more problems in this area). (thanks to Zach Beane)
2838 * the long form of DEFINE-METHOD-COMBINATION disables method group
2839 checking when given a single method group with pattern *. (thanks
2841 * on x86 compiler supports stack allocation of results of simple
2842 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2843 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2844 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2845 * fixed some bugs related to Unicode integration:
2846 ** the restarts for recovering from input and output encoding
2847 errors only appear when there is in fact such an error to
2849 * fixed some bugs revealed by Paul Dietz' test suite:
2850 ** MISC.549 and similar: late transformation of unsafe type
2851 assertions into derived types caused unexpected code
2853 ** SCALE-FLOAT type deriver is less wrong.
2854 ** type derivers for EXP, LOG and similar functions compute result
2855 types for complex arguments better.
2856 ** (MISC.563) CONJUGATE type deriver works for very restricted
2858 ** out-of-line type testers for character strings are available.
2859 ** EQUAL compiler transform understands specialness of objects
2861 ** accessing double-floats stored on the stack now works on x86-64.
2862 ** debugger internals could sometimes create invalid lispobjs,
2863 resulting in GC crashes.
2864 ** MISC.548: type check weakening can convert required type into
2866 ** initialization forms for bindings are not in scope of free special
2869 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2870 * incompatible change: thread support for non-NPTL systems has
2871 been removed - locking is buggy and unreliable. A threaded
2872 SBCL build will now warn at startup and refuse to create
2873 new threads, unless futex support is detected in the kernel
2874 * incompatible change: the top level REPL now has only an ABORT
2875 restart associated with it, not TOPLEVEL and ABORT as it used to.
2876 TOP and TOPLEVEL are now available as debugger commands for
2877 returning to the top level.
2878 * incompatible change: forms evaluated in the REPL now use the
2879 global optimization policy.
2880 * incompatible change: user- and system-initialization files are
2881 no longer processed with LOAD, but by READ and EVAL; hence the
2882 global optimization policy, startup package, readtable, etc,
2884 * The .fasl file format number has been incremented because of
2885 various incompatible changes.
2886 * internal entry point details and argument counts no longer appear
2887 in backtraces unless explicitly requested by setting
2888 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2889 * built-in and standard functions no longer have names like "top
2890 level local call to FOO".
2891 * fixed bug 32: functions defined in non-null lexical environments
2892 now have more legible printed representation
2893 * fixed bug 33: functions defined in non-null lexical environemnts
2894 are now more amenable to inspection by INSPECT.
2895 * workaround for bug 354: XEPs no longer appear in backtraces unless
2896 explicitly requested.
2897 * fixed bug: receiving the signal which results from attempting to
2898 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2899 SIGBUS on other *BSDs) on architectures where the C stack is also
2900 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2901 to debugger confusion or wild instability. (reported by Cheuksan
2903 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2904 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2905 (reported by Lutz Euler)
2906 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2907 compiled code. (reported by Paul Dietz)
2908 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2909 specialized parameter to a method to something that is not TYPEP
2910 the specializer is now possible.
2911 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2912 face of package deletion.
2913 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2914 pathname. (reported by David Tolpin on c.l.l)
2915 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2916 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2917 STRING-STREAM and FILE-STREAM, respectively.
2918 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2919 than previously; in addition, its test suite is now run on build.
2920 (thanks to Luke Gorrie)
2921 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2922 * optimization: added a immediate representation for single-floats
2924 * fixed some bugs revealed by Paul Dietz' test suite:
2925 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2926 ** attempting to create a package with a colliding nickname causes
2927 correctable errors to be signalled.
2928 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2929 ** several x86-64 backend bugs related to sign-extension of immediate
2932 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2933 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2934 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2936 * fixed loading of multiply forward-referenced layouts.
2937 (thanks to Cheuksan Wang)
2938 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2939 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2940 (see COMPILE-FILE documentation for details of :PRINT option)
2941 * fixed bugs 19 and 317: fixed-format floating point printing is
2942 more accurate. This also fixes a bug reported by Adam Warner
2943 related to the ~@F format directive.
2944 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2946 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2947 dispatch table if the from-char is a dispatch macro character.
2948 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2949 by the wordsize no longer ignore the last word. (reported by Lutz
2951 * fixed bug in type checking of dynamic-extent variables. (reported
2953 * optimization: sequence traversal functions use their freedom to
2954 coerce function designators to functions.
2955 * optimization: code with many calls to CLOS methods specialized on
2956 CLOS classes has had redundant type checks removed.
2957 * optimization: added declarations to speed up operations that access
2958 the internal character database (for example STRING-UPCASE)
2959 * optimization: comparison operations between floats and sufficiently small
2960 fixnums no longer create extra rationals
2961 * fixed some bugs related to Unicode integration:
2962 ** portions of multibyte characters at the end of buffers for
2963 character-based file input are correctly transferred to the
2964 start of the buffer at the next read.
2965 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2966 passing it through to OPEN.
2967 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2968 argument given to internal calls to OPEN.
2969 ** the built-in comment readers (introduced by character sequences
2970 ";" and "#|") are more forgiving to encoding errors; they will
2971 STYLE-WARN and then attempt to resync the stream at a character
2972 boundary. (thanks to Teemu Kalvas)
2973 * fixed some bugs in the x86-64 port:
2974 ** Negative short int return values from c-calls are sign-extended
2976 ** The stack is aligned to 16-bytes for c-calls, as required by
2977 the ABI. (thanks to Cheuksan Wang)
2978 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2979 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2980 for enums. (thanks to Vincent Arkesteijn)
2981 ** Multiple small optimizations and bugfixes for floating point
2983 * fixed some bugs revealed by Paul Dietz' test suite:
2984 ** Space, Tab, Linefeed, Return and Page have the invalid
2985 secondary constituent character trait.
2986 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2988 ** WITH-INPUT-FROM-STRING should only update the index place on
2990 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2991 works more reliably.
2992 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2993 with one-dimensional arrays with fill pointers.
2994 ** TYPE-OF failed on a complex with an integer realpart and a
2996 ** compiler failure during type inference for the code of form
2997 (IF (EQL X (THE ...)) ...) (MISC.535).
2999 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3000 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3001 platform. The port supports 61-bit fixnums, large memory spaces
3002 and reloading shared object files.
3003 * enhancement: saving cores with foreign code loaded is now
3004 supported on ppc/Darwin in addition to the previously supported
3006 * enhancement: the statistical profiler now walks deeper into the
3007 call stack for more meaningful call-graphs and accrued time
3008 reports (x86/x86-64 only). It also now reports time spent in
3010 * enhancement: it is now possible to trace most individual methods
3011 of a generic function in addition to tracing the generic function
3013 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3015 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3016 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3017 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3018 produces an error. (thanks to Vincent Arkesteijn)
3019 * bug fix: NAMESTRING on pathnames with :WILD components in their
3020 directories works correctly. (thanks to Artem V. Andreev)
3021 * fixed bug 125: compiler preserves identity of closures. (reported
3023 * bug fixed: functions with &REST arguments sometimes failed with
3024 "Undefined function" when compiled with (DEBUG 3). (reported by
3026 * bug fix: overflow during compiling of setting element of a bit
3027 vector with constant index and value. (reported by Timmy Douglas)
3028 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3029 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3030 * on x86 compiler partially supports stack allocation of dynamic-extent
3032 * GO and RETURN-FROM do not check the extent of their exit points
3033 when compiled with SAFETY 0.
3034 * fixed some bugs related to Unicode integration:
3035 ** encoding and decoding errors are now much more robustly
3036 handled; it should now be possible to recover even from invalid
3037 input or output to the terminal. (thanks to Teemu Kalvas)
3038 ** provided a first cut at implementing STRING-TO-OCTETS and
3039 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3040 ** altered the SB-MD5 contributed module slightly, changing the
3041 interface just enough for it to be supportable for builds where
3042 lisp characters are not eight bits.
3043 * fixed some bugs revealed by Paul Dietz' test suite:
3044 ** the FORMATTER-generated functions for ~V[ conditionals require
3045 the correct number of arguments.
3046 ** READ-FROM-STRING returns the mandated second value when applied
3047 to displaced strings.
3048 ** the #\Rubout and #\Backspace characters are treated as invalid
3049 constituent characters by the tokenizer.
3051 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3052 * new feature: reloading changed shared object files with
3053 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3054 * new feature: references to foreign variables and functions
3055 can now be compiled and loaded before the corresponding shared
3056 object file is loaded, as long as the foreign definitions are
3057 available at runtime.
3058 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3059 supported. (thanks to Dan Debertin)
3060 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3061 just keywords. (thanks to Vincent Arkesteijn)
3062 * fixed bug #331: structure-class instances corresponding to
3063 DEFSTRUCT forms are now created eagerly.
3064 * fixed bug #345: backtraces from calls to undefined functions work
3065 on x86 as well. Related bug #61 is now also partially fixed on x86
3066 (backtraces from throws to unknown catch tags.)
3067 * bug fix: lambda-list parsing is now stricter vrt. order and number
3068 of lambda-list keywords.
3069 * bug fix: as specified by AMOP, an error is signalled if a
3070 class-option appears multiple times in a DEFCLASS form. (reported
3072 * bug fix: RANDOM can be compiled when the compiler derives the type
3073 of its numeric argument as a disjoint set of small integers.
3074 (reported by Paul Dietz)
3075 * bug fix: starting a core saved with shared objects loaded when
3076 those objects are not available no longer causes threaded SBCL to
3077 hang. (reported by Sean Ross)
3078 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3080 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3081 argument, which must always be NIL. (reported by Kalle Niemitalo)
3082 * bug fix: printing 1.0d+23 no longer results in an error.
3083 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3084 * bug fix: structure slot setters preserve evaluation order. (thanks
3086 * fixed some bugs related to Unicode integration:
3087 ** RUN-PROGRAM can allow its child to take input from a Lisp
3088 stream. (reported by Stefan Scholl)
3089 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3090 locales. (reported by Ken Causey)
3091 * fixed some bugs revealed by Paul Dietz' test suite:
3092 ** INCF, DECF and REMF evaluate their place form as specified in
3094 ** FORMATTER expands ~{ ~} iteration directives with V or #
3095 parameters correctly.
3096 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3097 consequent uses no arguments correctly.
3098 ** the system has a partial understanding of the (COMPLEX RATIO)
3100 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3103 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3104 * new feature: a build-time option (controlled by the :SB-UNICODE
3105 keyword feature, enabled by default) for building the system with
3106 support for the entire 21-bit character space defined by the
3108 * new feature: the system now has rudimentary external-format
3109 support; the primary user-visible change at this time is that
3110 characters with the high bit set (such as lower-case-e-acute) will
3111 print correctly to a terminal in a UTF-8 environment.
3112 * minor incompatible change: BASE-CHAR no longer names a class;
3113 however, CHARACTER continues to do so, as required by ANSI.
3114 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3115 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3116 has been moved to the SB-EXT package (temporarily re-exported from
3118 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3119 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3121 * fixed bug #351: better error-handlind and reporting for malformed
3123 * fixed bug #350: bignum-printing is now more memory-efficient,
3124 allowing printing of very large bignums, eg. (expt 2 10000000).
3125 (reported by Bruno Haible)
3126 * fixed bug #302: better primitive-type selection for intersection
3128 * fixed bug #308: non-graphic characters now all have names, as
3129 required. (reported by Bruno Haible)
3130 * bug fix: redefining a class with different superclasses now correctly
3131 removes it from the direct-subclasses of its previous superclasses.
3132 (reported by David Morse)
3133 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3134 new value now works. (reported by Bruno Haible)
3135 * bug fix: correct canonicalization of multiple non-standard slot
3136 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3137 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3138 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3139 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3140 now exists, an signals an error.
3141 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3142 during macroexpansion for non-iteration variables as well. (reported
3143 by Bruno Haible for CMUCL)
3144 * bug fix: Cyclic structures and unprintable objects in compiler
3145 messages no longer cause errors. (reported by Bruno Haible)
3146 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3147 and READ-FROM-STRING all now return a primary value of NIL if
3148 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3149 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3150 (reported by Bruno Haible for CMUCL)
3151 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3152 do not designate a condition. (reported by Bruno Haible for
3154 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3155 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3156 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3157 permitting resolution in favour of any of the conflicting symbols.
3158 (reported by Bruno Haible for CMUCL)
3159 * bug fix: EQUAL compiler optimizations is less aggressive on
3160 strings which can potentially compare true despite having distinct
3161 specialized array element types.
3162 * bug fix: unit enumerations can be defined without dividing by
3163 zero. (thanks to Vincent Arkesteijn)
3164 * FORMAT compile-time argument count checking has been enhanced.
3165 (report from Bruno Haible for CMUCL)
3166 * a partial workaround for the bug 262: the compiler does not try to
3167 inline-expand a local function doing RETURN-FROM from a deleted
3168 BLOCK. (thanks to Peter Denno for the bug report and to David
3169 Wragg for the simple test case)
3170 * fixed some bugs revealed by Paul Dietz' test suite:
3171 ** RENAME-PACKAGE allows all package designators as new package
3173 ** constraint propagation and lambda variable substitution are
3174 more cautious in dealing with partially deleted code.
3175 ** compiler sometimes lost reoptimization passes.
3176 ** CERROR, given a condition as condition designator, passes its
3177 remaining arguments to the continue format control without
3179 ** Case-altering FORMAT directives work correctly on non-ASCII
3181 ** The REAL type specifier handles bounds outside the floating
3182 point ranges without signalling FLOATING-POINT-OVERFLOW.
3183 ** Functions with IR1-transformations can create intercomponent
3184 references to global functions.
3185 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3187 ** FORMAT ~R treats a nil value for its first parameter correctly.
3189 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3190 * enhancement: saving cores with foreign code loaded is now
3191 supported on x86/NetBSD and sparc/Linux in addition to the previously
3192 supported platforms.
3193 * bug fix: on some platforms repeated installations caused multiple
3194 copies of HTML documentation to be installed -- should not happen
3195 any more. (reported by Stefan Scholl)
3196 * bug fix: parsing self-recursive alien record types multiple times
3197 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3198 original patch by Helmut Eller for CMUCL)
3199 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3200 (thanks to Richard Kreuter)
3201 * bug fix: defining classes whose accessors are methods on existing
3202 generic functions in other (locked) packages no longer signals
3203 bogus package lock violations. (reported by François-René Rideau)
3204 * bug fix: special variables as DEFMETHOD parameters no longer have
3205 associated bogus type declarations. (reported by David Wragg and
3207 * bug fix: read-write consistency on streams of element-type
3208 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3209 * bug fix: redefiniton of the only method of a generic function with
3210 no DEFGENERIC no longer emits a full WARNING. In addition,
3211 redefinition of generic functions with no DEFGENERIC to an
3212 incompatible lambda list now signals an error. (thanks to Zach
3214 * bug fix: DEFGENERIC now works even when there's a function of the
3215 same name in an enclosing lexical environment. (thanks to Zach
3217 * fixed compiler failure, caused by instrumenting code during
3218 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3219 * optimization: added loop analysis and improved register allocation
3220 * fixed some bugs revealed by Paul Dietz' test suite:
3221 ** POSITION on displaced vectors with non-zero displacement
3222 returns the right answer.
3223 ** (SIMPLE-STRING) is a valid type specifier for sequence
3225 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3227 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3228 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3230 ** The justification version of the FORMAT ~< directive treats
3231 non-zero minpad parameter correctly.
3233 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3234 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3235 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3236 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3237 the supported interface.
3238 * new feature: Single-stepping of code compiled with DEBUG 2 or
3239 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3240 * new feature: saving cores with foreign code loaded is now
3241 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3242 Timothy Moore's work for CMUCL)
3243 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3244 parameters to * instead of NIL if no initform is supplied.
3245 (reported by Johan Bockgaard)
3246 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3247 correctly when FUNCALL appears as the car of the form. Note:
3248 despite this FUNCALL forms are not currently subject to
3249 compiler-macro expansion. (port of Raymond Toy's fix for the
3250 same from CMUCL, reported by Johan Bockgaard)
3251 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3252 (thanks for Teemu Kalvas)
3253 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3254 case instead of terminating the iteration (thanks for Julian
3255 Squires, Sean Champ and Raymond Toy)
3256 * bug fix: incorrect expansion of defgeneric that caused a style
3257 warning. (thanks for Zach Beane)
3258 * bug fix: slot accessor effective method computation works properly
3259 for classes with multiple non-standard applicable methods on
3260 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3261 * on x86 compiler supports stack allocation of results of LIST and
3262 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3263 CMUCL implementation by Gerd Moellmann)
3264 * fixed some bugs revealed by Paul Dietz' test suite:
3265 ** FORMAT strings with both the ~<~:;~> form of the justification
3266 directive and pretty-printing directives cause an error.
3268 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3269 * incompatible change: the internal functions
3270 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3271 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3272 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3273 instead of the old functions.
3274 * new feature: on platforms where "dladdr" is available foreign
3275 function names now appear in backtraces. (based on Helmut Eller's
3277 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3278 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3280 * documentation: ASDF manual is now distributed with SBCL.
3281 * bug fix: SBCL can now load its contributed modules with REQUIRE
3282 even if the system-provided entries have been removed from
3283 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3285 * bug fix: backtraces involving undefined functions or assembly
3286 routines are more informative. (thanks to Brian Downing)
3287 * bug fix: mutually referent alien structures now work correctly.
3288 (reported by Rick Taube)
3289 * bug fix: structures defined by WITH-ALIEN can be referred to
3290 within other definitions in the same WITH-ALIEN.
3291 * bug fix: division operators (MOD, TRUNCATE and the like) with
3292 constant zero divisors and integer dividends no longer generate
3294 * bug fix: provide default methods for INPUT-STREAM-P and
3295 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3296 * bug fix: improve the detection and resolution of MOP metacycles
3297 (where effective method computation depends on the generic function
3298 having its effective method computed). (reported by Bruno Haible)
3299 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3300 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3301 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3302 * bug fix: pathnames with relative directory components can be
3303 represented relative to default pathnames.
3304 * optimization: in taking the GCD of bignums, reduce the two bignums
3305 to approximately the same size (using Euclid's algorithm) before
3306 applying the more sophisticated binary GCD. (thanks to Juho
3308 * optimization: COUNT on bitvectors now operates word-at-a-time.
3309 * optimization: ASH with a positive, but not necessarily constant,
3310 (leftwards) shift, when in a modular context, is compiled to a
3312 * fixed some bugs revealed by Paul Dietz' test suite:
3313 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3314 if the corresponding argument is NIL.
3315 ** FORMAT directives accepting a minpad parameter treat negative
3317 ** literal commas as character parameters to FORMAT directives are
3319 ** literal spaces directly after ~<Newline> directives within a
3320 format-logical-block (~:< ~@:>) do not induce :FILL-style
3321 conditional newlines.
3322 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3323 as specified: it no longer includes conditional newlines).
3324 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3326 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3327 :PER-LINE-PREFIX argument does not evaluate to a string.
3329 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3330 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3331 the manual for details; for now, package locks can be disabled by
3332 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3333 if no major problems are found then it is likely that they will be
3334 compiled in unconditionally.
3335 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3336 unsupported operators on all platforms. To load a shared library
3337 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3338 object file, link it into a shared library outside of SBCL and
3339 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3341 * bug workaround: ROOM T and the GC were not working together
3342 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3343 reporting facility aren't preserved. That reporting has been
3344 disabled, so now until and unless someone figures out how to make it
3345 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3346 * minor incompatible change: as threatened around sbcl-0.8.0, the
3347 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3348 The symbols are also exported from SB-PCL for backwards
3349 compatibility, but more so than before SB-PCL should be treated as
3350 an implementation-internal package.
3351 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3353 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3354 It is known as of this release not to work on the Alpha, however.
3355 * fixed bug #167: errors signalled due to illegal syntax in method
3356 bodies are now more legible.
3357 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3358 designators and can hence be used with TYPEP.
3359 * fixed bug #333: CHECK-TYPE now ensures that the type error
3360 signalled, if any, has the right object to be accessed by
3361 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3362 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3363 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3365 * fixed bug #334: programmatic addition of slots using specialized
3366 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3367 and :ALLOCATION :CLASS slots.
3368 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3369 float exponents. (rereported by Peter Seibel)
3370 * fixed a bug: #\Space (and other whitespace characters) are no
3371 longer considered to be macro characters in standard syntax by
3372 GET-MACRO-CHARACTER.
3373 * fixed bug: initialization of condition class metaobjects no longer
3374 causes an instance of the condition to be created. (reported by
3376 * fixed bug: it is now possible to have slots such that
3377 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3378 description is neither :INSTANCE nor :CLASS.
3379 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3380 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3381 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3382 non-standard SLOT-DEFINITION-ALLOCATION values.
3383 * fixed bugs: various race conditions handling exiting threads.
3384 CL-PPCRE's thread torture test now passes.
3385 * fixed arguably-a-bug: GC time proportional to number of threads in
3386 system even when most of them are idle
3387 * optimization: improved performance of BIT and SBIT on bit-vectors.
3388 * .fasl file incompatibility: The fasl file version number has
3389 been incremented because of changes associated with package locks.
3391 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3392 * minor incompatible change: the system no longer provides
3393 optimization hints (conditions which are TYPEP
3394 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3395 mode; these hints are still emitted when higher SPEED optimization
3397 * new contrib module: a sampling profiler (profiling by statistical
3398 sampling, rather than by instrumenting functions) is available as
3399 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3400 * the behaviour of the standard function ED is now customizeable by
3401 third parties through a hook variable: see ED's documentation
3402 string for information on the protocol.
3403 * the compiler no longer emits efficiency notes for (FUNCALL X)
3404 when the type of X is uncertain under default optimization
3406 * fixed bug 276: mutating a binding of a specialized parameter to a
3407 method to something that is not TYPEP the specializer is now
3409 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3410 exhibit the required behaviour on the x86 platform. (thanks to
3411 Peter van Eynde, Eric Marsden and Bruno Haible)
3412 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3413 even for difficult arguments. (reported by Peter Graves)
3414 * fixed bug 141a: the backquote printer now descends quoted
3416 * fixed another bug in backquote printing: no more destructive
3417 modification of the form's list structure. (reported by Brian
3419 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3420 move between its address being taken and the call to
3421 interrupt_thread, fixing a crashing race condition.
3422 * the SB-POSIX contrib implementation has been adjusted so that it
3423 no longer exhibits ridiculously poor performance when constructing
3424 instances corresponding to C structs.
3426 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3427 * minor incompatible change: the sb-grovel contrib now treats C
3428 structures as alien (in the sense of SB-ALIEN) objects rather than
3429 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3430 has implications for memory management of client code
3431 (sb-grovel-returned objects must now be manually managed) and for
3432 type safety (alien objects now have full types).
3433 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3434 used to control emission of compiler diagnostics, rather than the
3435 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3436 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3437 quality should be considered deprecated.
3438 * install.sh now installs the user manual as well
3439 * (not quite a new documentable feature, but worth considering in
3440 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3441 beginnings of a semantically meaningful condition hierarchy is
3442 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3444 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3445 designator as the defaults argument.
3446 * fixed bug: Displaced arrays whose displaced-to array has become
3447 too small now cause ARRAY-DIMENSION to signal an error, providing
3448 for safer bounds-checking. (reported by Bruno Haible)
3449 * fixed bug: DEFCLASS slot definitions with identical :READER and
3450 :WRITER names now signal a reasonable error. (reported by Thomas
3452 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3454 * fixed bug: Invalid slot specification errors now print correctly.
3455 (thanks to Zach Beane)
3456 * fixed bug 320: Shared to local slot value transfers in class
3457 redefinitions now happen corrently from superclasses as
3458 well. (reported by Bruno Haible)
3459 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3461 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3462 improper lists correctly. (reported by Bruno Haible)
3463 * fixed bug 313: source-transform for <fun-name> was erroneously
3464 applied to a call of a value of a variable with name <fun-name>.
3465 (reported by Antonio Menezes Leitao)
3466 * fixed bug 307: The obsolete instance protocol ensures that
3467 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3468 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3469 remove dead unknown-values globs from the middle of the stack.
3470 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3471 easier to resume long computations after using *BREAK-ON-SIGNALS*
3472 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3473 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3474 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3475 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3476 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3477 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3479 * fixed a (fairly theoretical) bug in string printing: if
3480 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3481 does not have array-element-type equal to the most general string
3483 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3484 function name. (thanks to Nikodemus Siivola)
3485 * fixed bug: compile-time format string checker failed on
3486 non-closed ~{. (reported by Thomas F Burdick)
3487 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3488 don't warn on legal loop code involving more than one aggregate
3489 boolean. (thanks to Nikodemus Siivola)
3490 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3491 in keyword position to MAKE-PACKAGE was not being reported as
3493 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3494 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3496 * fixed bugs 280 and 312: the checking for multiple definitions in a
3497 file is less likely to become confused by uses of inline
3499 * fixed bug: the #S reader macro performs the keyword coercion
3500 specified for slot names. (reported by Kalle Niemitalo)
3501 * fixed bug: lambda lists may contain symbols whose names start with
3502 & but are not lambda-list-keywords; their occurrence triggers a
3504 * fixed bug 321: define-method-combination argument lambda lists do
3505 not cause invalid code to be generated when &optional or &aux
3506 variables have default values. (reported by Bruno Haible)
3507 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3508 have CLOS classes; this appears also to have fixed reported
3509 instability in stack exhaustion detection.
3510 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3511 MUFFLE-WARNING when no associated restart is present is now
3513 * optimization: rearranged the expansion of various defining macros
3514 so that each expands into only one top-level form in a
3515 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3517 * optimization: used a previously little-used slot in symbols to
3518 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3520 * fixed some bugs revealed by Paul Dietz' test suite:
3521 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3523 ** Fixed an optimization bug related to inheritance of initforms
3524 from local to shared slots.
3525 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3526 ** CAST optimizer forgot to flush argument derived type.
3527 ** print/read consistency on floats is now orders of magnitude
3528 more likely. (thanks also to Bruno Haible for a similar report
3530 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3531 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3532 for objects of type REAL. Make it so.
3533 ** SXHASH is specified (infelicitously) to respect similarity,
3534 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3535 it so. (thanks to Markus Ziegler)
3536 ** on the Alpha, the compiler succeeds in compiling functions
3537 returning a known number of arguments greater than 63.
3538 ** fixed handling of invalid NIL arguments in keyword position
3540 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3542 ** provided a readably-printable representation for RANDOM-STATE
3544 ** ensured that pathnames, where they have a namestring, always
3545 print using #P"..." syntax.
3547 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3548 * Support for the forthcoming 2.0 version of the NetBSD kernel
3549 running on x86 hardware has been added. (thanks to Perry
3550 E. Metzger most immediately, and others for their past work)
3551 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3552 current release version; SBCL's OpenBSD support had been broken
3553 since about the time of OpenBSD's switch to ELF binary format.)
3554 * [placeholder for DX summary]
3555 ** user code with &REST lists declared dynamic-extent, under high
3556 speed or space and low safety and debug optimization policy.
3557 * The manual has been converted to Texinfo format and the debugger
3558 chapter from the cmucl manual has been added.
3559 * A facility has been added to extract documentation strings from
3560 sbcl and store them as Texinfo-formatted snippets for inclusion in
3561 the manual (via Texinfo's @include directive)
3562 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3563 the test case to Dave Roberts)
3564 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3565 pointers. (reported by Sean Ross)
3566 * bug fix: PROFILE output is printed nicely even for large numerical
3567 values. (thanks to Zach Beane)
3568 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3569 greater than 32 handle EOF correctly.
3570 * bug fix: on X86 an immediate argument of the IMUL instruction is
3571 correctly printed in disassembly. (thanks to Lutz Euler)
3572 * bug fix: class slots in redefined classes preserve their old
3573 values. (thanks to Bruno Haible and Nikodemus Siivola)
3574 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3575 succeeds. (reported by Marco Baringer)
3576 * fixed some bugs revealed by Paul Dietz' test suite:
3577 ** READ-SEQUENCE now works on ECHO-STREAMs.
3578 ** RATIONALIZE works more according to its specification. (thanks
3581 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3582 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3583 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3584 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3585 should matter to you only if you rebind the printer control
3586 variables and then find you want different bindings in the
3587 debugger than in the ordinary execution of your program.)
3588 * The runtime build system has been tweaked to support building
3589 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3590 assembler and linker. (thanks to Nikodemus Siivola)
3591 * Unbound, undefined, undeclared variables now trigger full
3592 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3593 more often programmer error than deliberate exploitation of undefined
3595 * optimization: the hash algorithm for strings has changed to one
3596 that is less vulnerable to spurious collisions. (thanks to Juho
3598 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3599 needless bounds checking. (thanks to Juho Snellman)
3600 * optimization: implemented multiplication as a modular
3601 (UNSIGNED-BYTE 32) operation on the PPC backend.
3602 * fixed some bugs revealed by Paul Dietz' test suite:
3603 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3605 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3606 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3607 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3609 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3611 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3613 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3614 their output stream on EOF from read.
3615 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3616 have been read to end-of-file.
3617 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3619 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3620 description of determination of which consecutive characters
3622 ** Printing the "Space" character with escaping on now yields "#\\ ",
3623 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3624 ** Reading floating-point numbers with *READ-BASE* set to a number
3625 less than 10 works correctly.
3626 ** Reading floating-point numbers with *READ-BASE* set to a number
3627 more than 10 works correctly.
3628 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3629 the readtable currently in effect.
3631 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3632 * minor incompatible change: parsing of namestrings on a physical
3633 (Unix) host has changed; numbers after the final #\. in a
3634 namestring are no longer interpreted as a version field. This is
3635 intented to be largely invisible to the user, except that the
3636 meaning of the namestring "*.*.*" has changed: it now refers to a
3637 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3638 should usually be replaced by
3639 (make-pathname :name :wild :type :wild :version :wild)
3640 with the added benefit that this is more likely to be portable.
3641 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3642 option to OPEN now signals an error if the file being opened
3643 exists; this may have an impact on existing code.
3644 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3645 signals received, on the PowerPC platforms (both Linux and
3646 Darwin). (thanks to Pierre Mai for pointing out the location of
3648 * several fixes on OS X: The system now builds and runs cleanly on
3649 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3650 (thanks to Brian Mastenbrook)
3651 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3652 second-resolution: integer multiples of 1/3600 between -24 and 24.
3653 (thanks to Vincent Arkesteijn)
3654 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3655 type when called with 1 argument; PEEK-CHAR checked type of
3656 PEEK-TYPE only after having read first character from a
3657 stream. (reported by Peter Graves)
3658 * bug fix: the garbage collector now has much better locality
3659 behaviour, and in particular no longer treats all memory as being
3660 exhausted when many small objects point to each other in a deeply
3662 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3663 recognized as being TYPEP their class.
3664 * bug fix: the PUSHNEW documentation string has been corrected.
3665 (thanks to Vincent Arkesteijn)
3666 * bug fix: defaulting of the value for the last of an atypically
3667 large number of multiple values being bound was not being
3668 performed correctly on the Alpha or PPC platforms
3669 * optimization: implemented multiplication as a modular
3670 (UNSIGNED-BYTE 32) operation on the x86 backend.
3671 * optimization: SEARCH on simple-base-strings can now be open-coded.
3672 (see also contrib/compiler-extras.lisp for inspiration for
3673 teaching the compiler about the Boyer-Moore algorithm).
3674 * value, returned by MAX (and MIN) called with several EQUALP, but
3675 not EQL, arguments now does not depend on compiler settings.
3676 * fixed some bugs revealed by Paul Dietz' test suite:
3677 ** in stack analysis liveness information is propagated from
3678 non-local entry points.
3679 ** pathwise CAST removing failed when the CAST node did not start
3681 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3682 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3684 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3685 host is already defined.
3686 ** RENAME-FILE works on streams instead of signalling an internal
3688 ** PEEK-CHAR uses the current readtable when determining whether
3689 or not a character is whitespace.
3690 ** MERGE-PATHNAMES handles the case when the pathname does not
3691 specify a name while the default-pathname specifies a version.
3692 ** Pathnames now stand a better chance of respecting print/read
3694 ** Attempting to use standardized file system operators with a
3695 pathname with invalid :DIRECTORY components signals a
3697 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3699 ** DIRECTORY on logical pathnames is more correct.
3700 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3701 signal a TYPE-ERROR if their argument is not a stream.
3702 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3703 designator argument does not designate a stream.
3704 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3705 examining the synonym.
3706 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3708 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3709 element-type larger than ([UN]SIGNED-BYTE 32).
3711 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3712 * When built with the :SB-FUTEX feature, threaded builds now take
3713 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3714 for faster/more reliable mutex and condition variable support.
3715 * Incompatible change (but one you probably shouldn't have been using
3716 anyway): the interface and code for arbitrating between multiple
3717 threads in the same user session has been redesigned.
3718 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3719 error when called without an explicit environment argument.
3720 (thanks to Nikodemus Siivola)
3721 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3722 confused about their position. (thanks to Adam Warner and Gerd
3724 * bug fix: Pretty printing backquoted forms with unquotations in the
3725 argument list position of various code constructs such as LAMBDA
3726 now works correctly. (reported by Paul Dietz)
3727 * bug fix: Pretty printing unquotations no longer loses all
3728 stream position information.
3729 * optimization: performance of string output streams is now less
3730 poor for multiple small sequence writes.
3731 * optimization: performance of CSUBTYPEP in the presence of complex
3732 expressions involving CONS and NOT many times has been improved.
3733 (reported by Paul Dietz)
3734 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3736 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3737 streams for the REPL, for the debugger, and so on. (thanks to
3739 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3740 * fixed some bugs revealed by Paul Dietz' test suite:
3741 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3742 is ignored if it is too small, rather than propagating through
3743 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3744 ** extremely complex negations of CONS types were not being
3745 sufficiently canonicalized, leading to inconsistencies in
3747 ** VALUES tranformer lost derived type.
3749 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3750 * fixed a bootstrapping bug: the build process no longer assumes
3751 that the various BOOLE-related constants have the same value in
3752 host and target lisps. (noted by Paul Dietz' test suite on an
3753 SBCL binary built from CLISP)
3754 * The system can now be dynamically linked on the MIPS platform,
3755 which enables dynamic loading of foreign code from Lisp. (thanks
3756 to Ralf Baechle for discussions on the MIPS ABI)
3757 * The system now records debugging information for its own source
3758 files in a filesystem-position-independent manner, relative to
3759 the "SYS" logical host.
3760 * fixed a compiler bug: MV-LET convertion did not check references
3761 to the "max args" entry point. (reported by Brian Downing)
3762 * tweaked disassembly notes to be less confident about proclaiming
3763 some instruction as an LRA. (thanks to Brian Downing)
3764 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3765 now each have their own history, command character, and other
3766 characteristics. (thanks to David Lichteblau)
3767 * fixed some bugs revealed by Paul Dietz' test suite:
3768 ** compiler failure in compiling LOGAND expressions including a
3770 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3771 shift greater than 32.
3772 ** FLUSH-DEST did not mark blocks for type check regeneration.
3773 ** HANDLER-CASE failed to accept declarations in handler clauses
3774 in some circumstances.
3776 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3777 * New code in contrib/sb-introspect (still probably not entirely
3778 stable yet) provides some support for smart Lisp development
3779 environments like SLIME.
3780 * The conditions signalled for errors occurring when loading .fasl
3781 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3782 in a way which should help ASDF recover gracefully.
3783 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3784 stuff has been cleaned up. If you code contrib/ stuff, this might
3785 affect you, and you can look at contrib/README, contrib/STANDARDS,
3786 and/or the 0.8.4.27 diff to check.
3787 * In full calls the compiler now does not generate checks for declared
3788 argument types for all arguments.
3789 * various threading fixes
3790 ** and some experimental patches which didn't make it into
3791 the main tree for this release, but which are shipped in
3792 contrib/experimental-thread.patch as a possible fix for some
3793 failures (deadlock, spinning...) in GC-intensive multithreaded
3795 * fixed PPC build problem (source code incompatibility of different
3796 library versions): added offsetof() hackery which attempts to divine
3797 where glibc maintainers put uc_mcontext today
3798 * fixed bug 282: compiler does not trust type assertions while passing
3799 arguments to a full call.
3800 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3801 &OPTIONAL VALUES type parameter.
3802 * fix bug 214: algorithm for noting rejected templates is now more
3803 similar to that of template seletion. (also reported by rydis on
3805 * fixed bug 141b: printing backquoted information readably and prettily
3806 inserts a space where necessary.
3807 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3808 (CHARACTER 10) are now reported as errors, rather than propagated
3809 as unknown types. (reported by piso on #lisp)
3810 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3811 with values NIL and :ERROR. (thanks to Milan Zamazal)
3812 * fixed bug 191c: CLOS now does proper keyword argument checking as
3813 described in CLHS 7.6.5 and 7.6.5.1.
3814 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3815 longer raise an error; further, using a list as a for-as-arithmetic
3816 counter now raises a meaningful error.
3817 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3818 now understood by sequence creation functions such as MAKE-SEQUENCE
3820 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3821 a STRING-INPUT-STREAM.
3822 * compiler enhancement: SIGNUM is now better able to derive the type
3824 * type declarations inside WITH-SLOTS are checked. (reported by
3826 * fixed some bugs revealed by Paul Dietz' test suite:
3827 ** incorrect optimization of TRUNCATE for a positive first
3828 argument and negative second.
3829 ** compiler failure in let-convertion during flushing dead code.
3830 ** compiler failure while deriving type of TRUNCATE on an
3831 interval, containing 0.
3832 ** ASH of a negative bignum by a negative bignum count now returns
3834 ** intersection of CONS types now canonicalizes properly, fixing
3835 inconsistencies in SUBTYPEP.
3837 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3838 * incompatible change: The --disable-debugger command line
3839 option now clobbers the debugger at a more fundamental
3840 level, by redefining #'INVOKE-DEBUGGER instead of by
3841 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3842 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3843 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3844 enter the debugger REPL and then suffer recursive errors
3845 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3846 while under the new system, BREAK in --disable-debugger mode
3847 terminates the system just as an unhandled error would.
3848 * fixed compiler performance when processing loops with a step >1;
3849 * bug fix: DOCUMENTATION now retrieves generic function
3850 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3851 support has been systematized, and now supports the methods
3852 specified by ANSI, along with a default method and a method for
3853 slot documentation. (reported by Nathan Froyd)
3854 * bug fix: effective methods associated with a generic function are
3855 no longer cached over a change of that generic function's method
3856 combination. (reported by Andreas Fuchs)
3857 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3858 names a non-existent directory. (thanks to Andreas Fuchs)
3859 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3860 the PPC platform, lead to stack corruption; this has been fixed.
3861 (reported by Rainer Joswig)
3862 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3863 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3864 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3865 arithmetic in general, is now much more reliable on the PPC
3867 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3868 platform now returns the right answer.
3869 * optimization: restored some effective method precomputation in
3870 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3871 precomputation is now tunable.
3872 * optimization: compiler-internal data structure use has been
3873 reviewed, and changes have been made that should improve the
3874 performance of the compiler by about 20%.
3875 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3876 simple-base-strings and simple-bit-vectors is improved.
3877 * optimization: the optimization of 32-bit logical and arithmetic
3878 functions introduced in version 0.8.3 on the x86 has been
3879 implemented on the mips, ppc and sparc platforms; an
3880 implementation of the same facility, but for 64-bit arithmetic,
3881 has been added for the alpha.
3882 * microoptimization: the compiler is better able to make use of the
3883 x86 LEA instruction for multiplication by constants.
3884 * bug fix: in some situations compiler did not report usage of
3885 generic arithmetic in (SPEED 3) policy.
3886 * bug 145b fix: compiler used wrong type specifier while converting
3887 MEMBER-types to numeric.
3888 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3890 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3891 index argument now works properly on the Alpha platform.
3892 * bug fix: floating point exception treatment on the Alpha platform
3894 * bug fix: FILE-POSITION works much better on string input and
3895 output streams. (thanks to Nikodemus Siivola)
3896 * bug fix: many threading/garbage collection symptoms sorted.
3897 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3898 might be pseudo-atomic.
3899 * internal change: Stopping for GC is now done with signals not
3900 ptrace. GC is now done in whichever thread wanted it, instead of
3902 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3904 * bug fix: result form in DO is not contained in the implicit
3906 * incompatible change: ICR structure is changed; the value part of
3907 CONTINUATION is now called LVAR; corresponding functions are
3908 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3909 * added type deriver for ISQRT (thanks to Robert E. Brown).
3910 * bug fix: better support for loading from the command line when an
3911 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3913 * fixed some bugs revealed by Paul Dietz' test suite:
3914 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3915 ** ROUND and FROUND now give the right answer when given very
3916 small float arguments.
3917 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3919 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3920 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3921 ** LCM should return a non-negative integer.
3922 ** PARSE-INTEGER returned the index of a terminator instead of the
3923 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3924 ** PARSE-INTEGER returned an incorrect index being applied to a
3926 ** LCM with two arguments of 0 returns 0 rather than signalling
3928 ** unsigned addition of a 32-bit constant with the high bit set no
3929 longer causes an internal compiler error on the x86.
3930 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3931 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3932 with negative last argument.
3933 ** byte specifiers with zero size and position no longer cause
3934 an error during type derivation.
3935 ** bignum multiplication on the Alpha platform now returns the
3937 * porting: The system now builds on SuSE AMD64, although it still
3938 generates a 32-bit binary.
3939 * .fasl file incompatibility: The fasl file version number has
3940 been incremented (because of the changes to internal compiler
3941 data structures referred to above).
3943 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3944 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3945 more accurately, on the Darwin kernel running on PowerPC hardware.
3946 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3947 * Compiler code deletion notes now signal a condition of type
3948 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3949 an associated MUFFLE-WARNING restart.
3950 * The compiler now performs limited argument count validation of
3951 constant format strings in FORMAT, and where appropriate in ERROR,
3952 CERROR and WARN. (thanks to Gerd Moellmann)
3953 * New ASDF-INSTALL contrib can be used for automatic download and
3954 installation of third-party Lisp code from CCLAN or other sites
3956 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3957 which forces another thread to execute a function supplied by the
3959 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3960 now accept and act upon their :ELEMENT-TYPE keyword argument.
3961 (reported by Martin Atzmueller, Edi Weitz)
3962 * bug fix: FILE-POSITION now accepts position designators up to
3963 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3964 is the greater. (thanks to Patrik Nordebo)
3965 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3966 Kalle Olavi Niemitalo)
3967 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3968 printable. (reported by Eric Marsden)
3969 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3970 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3971 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3972 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3973 (thanks to Stig Sandoe)
3974 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3975 UNREAD-CHAR now correctly includes the unread character in the
3976 target sequence. (thanks to Gerd Moellmann)
3977 * bug fix in threaded builds: the system can now be suspended and
3978 resumed by shell job control with minimal disruption.
3979 * bug fixes in times and timezones >2038AD
3980 * better handling of "where is GNU make?" problem in build scripts
3981 (thanks to Nikodemus Siivola)
3982 * new optimization: inside a named function any reference to a
3983 function with the same name is considered to be a self-reference;
3984 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3985 optimization quality.
3986 * new optimization on x86: logical functions and + now have
3987 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3988 used when the result is truncated to 32 bits.
3989 * VALUES declaration is partially enabled.
3990 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3991 * fixed some bugs revealed by Paul Dietz' test suite:
3992 ** The system now obeys the constraint imposed by
3993 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3994 types form a lattice under type intersection.
3995 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3996 ** ASSOC now ignores NIL elements in an alist.
3997 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3998 and (1+ MOST-POSITIVE-FIXNUM) answers.
3999 ** The addition of a method with invalid qualifiers to a generic
4000 function does not cause an error to be signalled immediately;
4001 a warning is signalled, and the error is generated only on
4002 calling the generic function.
4003 * changed .fasl file version number, in part to add type codes for
4004 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4005 obscure ANSI requirements
4007 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4008 * fixed bug 148: failure to inline-expand a local function left
4009 garbage, confusing the compiler.
4010 * fixed bugs 3cd: structure slot readers perform type check if the
4011 slot can have an invalid value (i.e. it is either not initialized
4012 or can be written with a less specific slot writer).
4013 * bug fix: the compiler now traps array references to elements off
4014 the end of an array; previously, the bounds checking in some
4015 circumstances could go off-by-one.
4016 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4018 * type declarations for array element types now obey the description
4019 on the CLHS page "Declaration TYPE", as per discussions on
4020 sbcl-help around 2003-05-08. This means that a declaration
4021 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4022 declaration, all references to BAR will be asserted or assumed
4023 (with THE, so dependent on compiler policy) to involve objects of
4024 type FOO. Note that no such declaration is implied in
4025 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4026 * declared types of functions from the "Conditions"
4027 chapter. (reported by Paul Dietz)
4028 * bug fix: CERROR accepts a function as its first argument.
4029 * bug fix: NTH an NTHCDR accept a bignum as index
4030 arguments. (reported by Adam Warner)
4031 * optimization: character compare routines now optimize comparing
4032 against a constant character. (reported by Gilbert Baumann)
4033 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4034 argument now works properly on the MIPS platform.
4035 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4036 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4037 declared to have a functional type, does not cause an error
4039 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4040 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4041 * fixed bug: if last continuation of a deleted block has a
4042 destination, this destination should be deleted too. (reported by
4044 * fixed a bug in the bootstrap process: the host compiler's values
4045 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4046 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4047 test case from Patrik Nordebo)
4048 * improved the ability of the disassembler on the PPC platform to
4049 provide helpful disassembly notes.
4050 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4051 the class in more cases than previously.
4052 * bug fix: FILE-POSITION now understands :START and :END for
4053 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4054 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4055 8) data. (thanks to David Lichteblau)
4056 * bug fix: it is possible to add a method to a generic function
4057 without lambda list.
4058 * bug fix: reader failed to signal END-OF-FILE inside an
4059 object representation. (reported by Nikodemus Siivola)
4060 * fixed some bugs revealed by Paul Dietz' test suite:
4061 ** LAST and [N]BUTLAST should accept a bignum.
4062 ** condition slot accessors are methods.
4063 ** (VECTOR NIL) is a subtype of STRING.
4065 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4066 * minor incompatible change: some nonsensical specialized lambda
4067 lists (used in DEFMETHOD) which were previously ignored now signal
4069 * minor incompatible change: the system is now aware of the types of
4070 variables in the COMMON-LISP package, and will signal errors for
4071 most violations of these type constraints (where previously they
4072 were silently accepted).
4073 * minor incompatible change: COMPILE-FILE now uses the freedom
4074 afforded (ANSI 3.2.2.3) to use derived function types for
4075 functions defined in the same file. This also permits the system
4076 to warn on static type mismatches and function
4077 redefinition. (Currently it does not work with high DEBUG level.)
4078 * minor incompatible change: VALUES declaration is disabled.
4079 * When issuing notes, the compiler now signals a condition of type
4080 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4081 restart for use in user handlers. It is expected that the
4082 COMPILER-NOTE condition will eventually become a condition
4083 supertype to a hierarchy of note types, which will then be
4084 handleable in a similar fashion. However, at the moment, no such
4085 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4086 but it's an implementation detail, not a classification for the
4088 * Changes in type checking closed the following bugs:
4089 ** type checking of unused values (192b, 194d, 203);
4090 ** template selection based on unsafe type assertions (192c, 236);
4091 ** type checking in branches (194bc).
4092 * A short form of VALUES type specifier has ANSI meaning (it has
4093 increased the number of situations when SBCL cannot perform type
4095 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4096 keywords or constants is permissible.
4097 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4098 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4099 classes. (thanks to Antonio Martinez)
4100 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4101 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4102 argument to a pretty-print stream. Instead, it leaves any such
4103 operations to DESCRIBE-OBJECT methods.
4104 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4106 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4107 lambda lists. (thanks to David Lichteblau)
4108 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4109 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4110 (thanks to Gerd Moellmann)
4111 * fixed bug 246: increased compilation speed of long
4112 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4114 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4116 * DEFCONSTANT now throws a condition of type
4117 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4118 constant to a non-EQL value; CONTINUE and ABORT restarts
4119 respectively change and preserve the value.
4120 * fixed bug 63: The code walker, part of the implementation of CLOS,
4121 is now better at handling symbol macros.
4122 * bug fix: There is no longer an internal implementation type named
4123 CL:LENGTH. (reported by Raymond Toy)
4124 * bug fix: In macro-like defining macros/special operators the
4125 implicit block does not enclose the lambda list.
4126 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4127 enclosed in parentheses) are not suitable as type specifiers, and
4128 their use properly signals an error now.
4129 * bug fix: An argument count mismatch for a type specifier in code
4130 being compiled no longer causes an unhandled error at compile
4131 time, but signals a compile-time warning.
4132 * fixed simple vector readable printing
4133 * bug fix: DESCRIBE takes more care over whether the class
4134 precedence list slot of a class is bound before accessing it.
4135 (reported by Markus Krummenacker)
4136 * bug fix: FORMATTER can successfully compile pretty-printer format
4137 strings which use variants of the ~* directive inside.
4138 * bug fix: SEARCH now applies its TEST predicate to the elements of
4139 the arguments in the correct order. (thanks to Wolfhard Buss)
4140 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4141 in type inference. (thanks to Robert E. Brown)
4142 * bug fix: Reading in symbols with an explicit package name of ""
4143 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4144 * fixed some bugs revealed by Paul Dietz' test suite:
4145 ** NIL is now allowed as a structure slot name.
4146 ** Arbitrary numbers, not just REALs, are allowed in certain
4147 circumstances in LOOP for-as-arithmetic clauses.
4148 ** Multiple class redefinitions before slot access no longer
4149 causes a type error.
4150 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4151 association between the name and a class.
4152 ** Generic functions with non-standard method-combination and over
4153 five methods all of which return constants no longer return NIL
4154 after the first few invocations. (thanks to Gerd Moellmann)
4155 ** CALL-NEXT-METHOD with no arguments now passes the original
4156 values of the arguments, even in the presence of assignment.
4157 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4159 ** DISASSEMBLE works with closures and funcallable instances.
4160 ** ADD-METHOD now returns the generic function, not the new method.
4161 ** FIND-METHOD signals an error if the lengths of the specializers
4162 is incompatible with the generic function, even if the ERRORP
4164 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4165 which its argument is a member.
4166 ** DEFCLASS only redefines the class named by its class-name
4167 argument if that name is the proper name of the class;
4168 otherwise, it creates a new class.
4169 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4170 of the UNBOUND-SLOT condition to the name of the slot.
4171 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4172 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4173 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4174 SLOT-MAKUNBOUND in the specified fashion.
4176 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4177 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4178 cross-compilation host. As a consequence, we can now bootstrap our
4179 way up to SBCL starting with a bare gcc toolchain and human-readable
4180 source code (first the source to CLISP, then the source to SBCL).
4181 * A contributed module containing a partial implementation of the
4182 simple-streams interface has been included. (thanks to Rudi
4184 * A contributed module implementing the RFC1321 Message Digest
4185 Algorithm, known as MD5, has been included.
4186 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4187 no longer has any effect, as the code controlled by this feature
4188 has been deleted. (As far as we know, no-one has ever built using
4189 this feature, and its semantics were confused in any case).
4190 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4191 work on conditions (as required by the ANSI specification),
4192 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4193 expected behaviour on conditions. Users should note, however,
4194 that such behaviour is not required by the ANSI specification,
4195 and so use of this behaviour may render their code unportable.
4196 * fixed some bugs revealed by Paul Dietz' test suite:
4197 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4199 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4200 ** SXHASH on condition objects no longer returns NIL.
4201 ** :ALLOCATION :CLASS slots are better treated; their values are
4202 updated on class redefinition, and initforms inherited from
4203 superclasses are applied.
4204 ** REMOVE-METHOD returns its generic function argument even when
4205 no method was removed.
4206 ** SHARED-INITIALIZE now initializes the values of the requested
4207 slots, including those with :ALLOCATION :CLASS.
4208 ** ALLOCATE-INSTANCE now works on structure classes defined via
4209 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4211 ** SLOT-EXISTS-P now works on conditions, as well as structures
4213 ** MAKE-LOAD-FORM now has the required methods on
4214 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4215 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4216 keyword, and now implements the SLOT-NAMES argument.
4217 ** methods with &OPTIONAL arguments no longer allow too many
4218 arguments to be passed in the call without error.
4219 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4220 option is consistent with the required arguments of the generic
4221 function lambda list.
4222 * bug fix: REQUIRE accepts a string designator. (Thanks to
4224 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4225 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4226 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4227 * bug fix: The compiler now checks for duplicated variables in macro
4229 * bug fix: SETQ on globals returns the correct value.
4230 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4231 not a COMPILER-ERROR (followed by some other strange error on
4232 choosing the CONTINUE restart).
4233 * bug fix: make.sh and friends are now more consistent in the way that
4234 they look for GNU "make".
4236 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4237 * experimental native threads support (on x86 Linux >=2.4 only).
4238 This is not compiled in by default: you need to add :SB-THREAD to
4239 the target features. See the "Beyond ANSI" chapter of the manual
4241 * fix for longstanding nonANSIism: The old distinction between
4242 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4243 The return value from CL:FIND-CLASS is now a CLOS class, and
4244 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4245 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4246 * An interface to the MetaObject Protocol, as described in Kiczales,
4247 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4248 MIT Press, 1991, is available from the SB-MOP package.
4249 * incompatible change: the SB-PCL package should now be considered
4250 a private implementation detail, and no longer a semi-private MOP
4252 * minor incompatible change: due to rearrangement for threads, the
4253 control stack and binding stack are now allocated at arbitrary
4254 addresses instead of being hardcoded per-port. Users affected by
4255 this probably have to be doing advanced things with shared
4256 libraries, and will know who they are.
4257 * minor incompatible change: Previously, all --eval forms used were
4258 processed with READ before any of them were processed with EVAL.
4259 Now each --eval form is processed with both READ and EVAL before
4260 the next --eval form is processed. (Thus package operations like
4261 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4262 work as the user might reasonably expect.)
4263 * minor incompatible change: *STANDARD-INPUT* is now only an
4264 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4266 * minor incompatible change: Y-OR-N-P is now character-oriented,
4267 not line oriented. Also, YES-OR-NO-P now works without errors.
4268 (thanks to Antonio Martinez)
4269 * sb-aclrepl module improvements: an integrated inspector, added
4270 repl features, and a bug fix to :trace command.
4271 * Known functions, which cannot be open coded by the backend, are
4272 considered to be able to check types of their arguments. (fixing
4273 a bug report by Nathan J. Froyd)
4274 * fixed a bug in computing method discriminating functions: It is
4275 now possible to define methods specialized on classes which have
4276 forward-referenced superclasses. (thanks to Gerd Moellmann)
4277 * fixed evaluation order in optional entries (reported by Gilbert
4279 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4280 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4281 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4282 required-by-AMOP NAME argument, as well as CLASS and
4283 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4284 * fixed bug 20: DEFMETHOD can define methods using names that are
4285 not the proper names of classes to designate class specializers.
4286 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4287 Unix file descriptors, instead of blowing up. (thanks to Antonio
4289 * Garbage collection refactoring: user-visible change is that a
4290 call to the GC function during WITHOUT-GCING will not do garbage
4291 collection until the end of the WITHOUT-GCING. If you were doing
4292 this you were probably losing anyway.
4293 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4294 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4295 TYPEP the latter but not the former.
4296 * The compiler issues a full WARNING for calls to undefined functions
4297 with names from the CL package.
4298 * MAP-INTO for a vector destination is open coded. (reported by
4299 Brian Downing on c.l.l)
4300 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4301 documentation string.
4302 * fixed some bugs revealed by Paul Dietz' test suite:
4303 ** COPY-ALIST now signals an error if its argument is a dotted
4305 ** Condition slots are now accessed more correctly in the presence
4306 of multiple initargs for a given slot.
4307 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4308 exclude restarts of the same name associated with a different
4310 ** DEFCLASS of forward-referenced classes with another
4311 forward-referenced class in the superclasses list no longer
4313 ** Condition slots are now initialized once each, not multiple
4314 times. (thanks to Gerd Moellmann)
4315 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4317 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4318 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4319 arguments contain duplicated elements.
4320 ** RESTART-CASE understands local macros.
4321 ** RESTART-CASE associates exactly its own restarts with a condition.
4322 ** ENDP in safe mode checks its argument to be of type LIST.
4323 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4324 in question is unbound.
4325 ** Optimized MAKE-INSTANCE functions no longer cause internal
4326 assertion failures in the presence of duplicate initargs.
4327 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4328 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4329 propagated even in the ctor optimized implementation of
4331 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4333 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4334 * a better implementation of SXHASH on (simple) bit vectors,
4335 measured both in execution speed and in distribution of results
4336 over the positive fixnums, has been installed. Likewise, a better
4337 implementation of EQUAL for simple bit vectors is now available.
4338 * fixed CEILING optimization for a divisor of form 2^k.
4339 * fixed bug 240 (emitting extra style warnings "using the lexical
4340 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4341 by Antonio Martinez)
4342 * fixed SXHASH, giving different results for NIL depending on type
4343 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4344 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4345 variable. (found by Rolf Wester)
4346 * SBCL does not ignore type declarations for special
4347 variables. (reported by rif on c.l.l 2003-03-05)
4348 * some bug fixes in contrib/sb-aclrepl/
4349 * fixed some bugs revealed by Paul Dietz' test suite:
4350 ** a bug in the CONS type specifier, whereby the CAR and CDR
4351 types got intertwined, has been fixed;
4352 ** the type system is now able to reason about the interaction
4353 between INTEGER and RATIO types more completely;
4354 ** APPEND, [N]REVERSE and NRECONC check that those their
4355 arguments, which must be proper lists, are really so;
4356 ** An array specialized to be unable to hold elements has been
4357 implemented, as required -- yes, really -- by ANSI;
4358 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4359 on malformed property lists;
4361 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4362 * incompatible packaging change: in line with Unix convention,
4363 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4364 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4365 * REQUIRE and PROVIDE are now optionally capable of doing something
4366 useful. See the documentation string for REQUIRE.
4367 * infrastructure for a managed SBCL contrib system: contributed
4368 modules in this release include:
4369 ** the ASDF system definition facility;
4370 ** an interface to the BSD Sockets API;
4371 ** an ACL-like convenience interface to the repl;
4372 (thanks to Kevin Rosenberg)
4373 ** an implementation of ROTATE-BYTE, with efficient implementation
4375 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4376 gives a closer approximation to the right answer than previously.
4377 (thanks to Raymond Toy)
4378 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4379 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4380 optional environment arguments, as required by ANSI.
4381 * fixed bugs in other functions taking environment objects, allowing
4382 calls with an explicit NIL environment argument to be compiled
4384 * fixed bug 228: primary return values from
4385 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4386 COMPILE or FUNCTION.
4387 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4388 :TYPE will no longer signal errors on innocuous objects.
4389 * fixed bug 231b: SETQ is better at respecting type declarations in
4390 the lexical environment.
4391 * fixed a bug in DEFCLASS: classes named by symbols with no or
4392 unprintable packages can now be defined.
4393 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4394 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4395 * fixed compiler failure related to checking types of functions.
4396 (reported by Robert E. Brown)
4397 * the compiler is now much more consistent in its error-checking
4398 treatment of bounding index arguments to sequence functions: in
4399 (SAFETY 3) code, errors will be signalled in almost all cases if
4400 invalid sequence bounding indices are passed to functions defined
4401 by ANSI to operate on sequences.
4402 * fixed a bug in the build procedure: documentation of SBCL-specific
4403 packages is now preserved and available in the final Lisp image.
4404 * lifted FDEFINITION lookup out of loops in the implementation of
4405 many list operations. (thanks to Robert E. Brown)
4406 * fixed a bug in the reader: the #n# reader macro now works for
4407 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4408 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4409 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4410 E. Brown and Tony Martinez respectively)
4411 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4412 SLOT-BOUNDP: in particular, it is now able to optimize them much
4413 better, and is now not vulnerable to having packages renamed.
4414 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4415 always called when a slot is not present in an instance. (thanks
4417 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4418 longer signal an error on unreading a character following EOF on
4419 the previous constituent stream. (thanks to Tony Martinez)
4420 * fixed some bugs revealed by Paul Dietz' test suite:
4421 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4422 not just nonnegative fixnums;
4423 ** the logical bit-array operators such as BIT-AND now accept an
4424 explicit NIL for their "opt-arg" argument (to indicate a
4425 freshly-consed result bit-array);
4426 ** ELT now signals an error on an invalid sequence index in safe
4428 ** the type system is now cleverer about negations of numeric
4429 types, and consequently understands the BIGNUM and RATIO types
4431 ** the type system is now cleverer about the interaction between
4432 INTEGER and RATIO types: while bugs still remain, many more
4433 cases are accurately computed;
4434 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4435 if it is in the last clause;
4436 ** CONSTANTLY now correctly returns a side-effect-free function in
4438 ** DECLARE is no longer treated as a special-operator; in
4439 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4440 * incremented fasl file version number due to the change in the
4441 DEFSTRUCT-SLOT-DESCRIPTION structure.
4443 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4444 * minor incompatible change: code processed by the "interpreter" or
4445 EVAL now has a compilation optimization policy of (DEBUG 2)
4446 (changed from (DEBUG 1)) to improve debuggability of interactive
4447 development, and to allow the use of the debug RETURN command in
4449 * an experimental implementation of the RETURN command for the
4450 debugger has been included. (thanks to Frederik Kuivinen)
4451 * fixed bug 62: constraints were not propagated into a loop.
4452 * fixed bug in embedded calls of SORT (reported and investigated by
4454 * fixed some bugs revealed by Paul Dietz' test suite:
4455 ** printing and reading of arrays with some dimensions having
4456 length 0 (thanks to Gerd Moellmann);
4457 ** BOA constructor with &AUX argument without a default value does
4458 not cause a type error;
4459 ** CONSTANTP now returns true for all self-evaluating objects.
4461 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4462 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4463 accessors that are related by inheritance, as specified in the
4464 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4465 Valtteri Vuorikoski)
4466 * The compiler is now able to inline functions that were defined in
4467 a complex lexical environment (e.g. inside a MACROLET).
4468 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4470 * Support for the upcoming FreeBSD-5.0 release has been included.
4471 (thanks to Dag-Erling Smorgrav)
4472 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4473 effect when it is not in a toplevel context.
4474 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4475 stand a better chance of being correct. (thanks to Gerd
4477 * fixed bug in COERCE, which now signals an error on coercing a
4478 rational to a bounded real type which excludes the expected
4480 * The compiler is now able to derive types more accurately from the
4481 COERCE and COMPILE functions.
4482 * fixed bug 223: functional binding is considered to be constant
4483 only for symbols in the CL package.
4484 * fixed bug 231: SETQ did not check the type of a variable being set
4485 (reported by Robert E. Brown)
4486 * A new optimization for MAKE-INSTANCE has been included, fixing
4487 various bugs (including relating to :ALLOCATION :CLASS slots and
4488 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4490 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4491 ** As required by ANSI, LOOP now disallows anonymous collection
4492 clauses such as COLLECT I in conjunction with aggregate boolean
4493 clauses such as THEREIS (= I 1);
4494 ** LOOP now signals an error when any variable is reused in the
4495 same loop (including the potentially useful construct analogous
4496 to WITH A = 1 WITH A = (1+ A);
4497 ** IT is only a special loop symbol within the first clause of a
4498 conditional loop clause;
4499 ** LOOP with a typed iteration variable over a hashtable now
4500 signals a type error iff it should.
4501 * fixed some other bugs revealed by Paul Dietz' test suite:
4502 ** FILE-STREAM now names the class previously known as FD-STREAM;
4503 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4504 argument) no longer signals an error;
4505 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4506 of the slot symbol, rather than using the current package
4507 ((:CONC-NAME "") continues to intern the slot's name in the
4509 * incremented fasl file version number, because of the incompatible
4510 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4511 of the new implementation of DEFINE-COMPILER-MACRO.
4513 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4514 * Support for building SBCL for MIPS platforms running in
4515 little-endian mode has now been checked in, and basic
4516 functionality on said platforms verified.
4517 * minor incompatible change: PCL now records the pathname of a file
4518 in which methods and the like are defined, rather than its
4520 * minor incompatible change: TRUENAME now considers the truename of
4521 a file naming a directory to be the pathname with :DIRECTORY
4522 component indicating that directory.
4523 * minor incompatible change: a NAMED clause in the extended form of
4524 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4525 reason for the previous behaviour is unclear.
4526 * more systematization and improvement of CLOS and MOP conformance
4527 in PCL (thanks to Gerd Moellman and Pierre Mai):
4528 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4530 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4531 primary methods with no specializers;
4532 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4534 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4535 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4536 FORWARD-REFERENCED-CLASSes; error reporting on
4537 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4539 ** SXHASH on CLOS instances now uses a slot internal to the
4540 instance to return different numbers on distinct instances,
4541 while preserving the same return value through invocations of
4543 ** DEFMETHOD signals errors when methods with longer incongruent
4544 lambda lists are added to generic functions;
4545 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4546 CLASS, as specified in AMOP;
4547 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4548 on the order returned by the primary method for classes of
4549 class STANDARD-CLASS;
4550 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4551 * fixed some bugs shown by Paul Dietz' test suite:
4552 ** DOLIST puts its body in TAGBODY;
4553 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4555 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4556 value producing form;
4557 ** if more variables are given to PROGV than values, extra
4558 variables are bound and made to have no value;
4559 ** NSUBSTITUTE on list arguments gets the right answer with
4561 ** ELT signals an error of type TYPE-ERROR when the index argument
4562 is not a valid sequence index;
4563 ** LOOP signals (at macroexpansion time) an error of type
4564 PROGRAM-ERROR when duplicate variable names are found;
4565 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4566 ** FUNCALL of special-operators now cause an error of type
4568 ** PSETQ now works as required in the presence of side-effecting
4569 symbol-macro places;
4570 ** NCONC accepts any object as its last argument;
4571 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4573 ** loop-for-as-package does not require a package to be explicitely
4575 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4577 * fixed bug 166: compiler preserves "there is a way to go"
4578 invariant when deleting code.
4579 * fixed bug 172: macro lambda lists with required arguments after
4580 &REST arguments now cause an error to be signalled. (thanks to
4582 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4583 bug. (thanks to Matthew Danish)
4584 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4586 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4587 arguments are lexically rebound. (thanks to Gerd Moellmann and
4589 * fixed bug 194: error messages are now more informative when there
4590 is no primary method applicable in a call to a generic
4591 function. (thanks to Gerd Moellmann)
4592 * fixed bug in command line argument checking (thanks to Julian
4594 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4595 (thanks to Matthew Danish)
4596 * incremented fasl file version number, because of the
4597 SXHASH-related changes in the layout of CLOS data structures
4599 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4600 * minor incompatible change: The runtime (the Unix executable named
4601 "sbcl") is now much pickier about the .core files it will load.
4602 Essentially it now requires .core files to descend from the same
4603 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4604 as the runtime does. (The intent is to prevent the crashes which
4605 can occur, and which can even be reported as mysterious failures,
4606 when people patch the sources or change the build parameters
4607 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4608 sbcl and .core files.)
4609 * fixed bug: VALUES-LIST is no longer optimized away.
4610 * fixed bug 142: The FFI conversion of C string values to Lisp
4611 string values no longer conses excessively. (thanks to Nathan
4612 Froyd porting Raymond Toy's fix to CMU CL)
4613 * began to systematize and improve MOP conformance in PCL (thanks to
4614 Nathan Froyd, Gerd Moellman and Pierre Mai):
4615 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4617 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4618 ** FINALIZE-INHERITANCE is now called on class finalization;
4619 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4620 argument precedence order.
4621 * fixed bug 202: The compiler no longer fails on functions whose
4622 derived types contradict their declared type.
4623 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4624 so it can be non-toplevel.
4625 * The fasl file version number has changed (because of the new
4626 implementation of DEFMACRO).
4627 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4628 safe code, that any length requirement by their type-specifier
4629 argument is valid. The exceptions to this are described in bug
4631 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4632 functions now check the types of their inputs as required by ANSI.
4633 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4634 introduced symbol is DECLAREd to be SPECIAL.
4635 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4636 * fixed bug: :COUNT argument to sequence functions may be negative
4637 * fixed bug: body of DO-SYMBOLS may contain declarations
4638 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4639 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4640 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4641 symbol macro only once
4642 * fixed printing of call frame when argument list is unavailable
4643 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4644 * compiler no longer signals WARNING on unknown keyword
4647 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4648 * A beta-quality port to the mips architecture running Linux,
4649 based on the old CMUCL backend, has been made. It has been tested
4650 on a big-endian kernel, and works sufficiently well to be able to
4651 rebuild itself; it has not been tested in little-endian mode.
4652 * fixed an inconsistency between gencgc.c and purify.c which made
4653 dumping/loading .core files unreliable
4654 * fixed bug 120a: The compiler now deals correctly with IFs where
4655 the consequent is the same as the alternative, instead of
4656 misderiving the return type. (thanks to Alexey Dejneka)
4657 * fixed bug 113: Logical pathnames are now dumpable (the logical
4658 host is resolved at load-time, throwing an error if it is not
4660 * fixed bug 174: FORMAT's error message is slightly clearer when a
4661 non-printing character is used in a format directive.
4662 * fixed several bugs in compiler checking of type declarations, i.e.
4663 violations of the Python "declarations are assertions" principle
4664 (thanks to Alexey Dejneka)
4665 * fixed several bugs in PCL's error checking (thanks to Gerd
4667 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4669 * fixed bug in compilation of functions as first class values
4670 (thanks to Antonio Martinez-Shotton)
4671 * The compiler's handling TYPE-ERRORs which it can prove will
4672 inevitably happen at runtime has been cleaned up and corrected
4673 in several ways. (thanks to Alexey Dejneka)
4674 * improved argument type checking for various basic arithmetic
4675 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4676 lavished on them in the past that they can be compiled in many
4677 ways in different special cases
4678 * fixed bug 181: compiler checks validity of user supplied type
4680 * cleaned up code flushing in optimization: Function calls which
4681 should signal errors for safety purposes (e.g. which ANSI says
4682 should signal errors when their arguments are of incorrect type)
4683 are no longer optimized away.
4684 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4685 * incremented fasl file version number, because changes in the
4686 implementation of sequence functions like COERCE caused
4687 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4688 in old inline expansions) to become undefined. (Actually these
4689 changes were later undone, so we might very well be binary
4690 compatible with 0.7.7 after all, but leaving the version number
4691 incremented seemed like the simplest and most conservative
4694 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4695 * An alpha-quality port to the parisc architecture running Linux,
4696 based on the old CMUCL backend, has been made. This, even more so
4697 than the other backends, should be considered still a work in
4698 progress; known problems include that the Linux kernel in 64-bit
4699 mode does not propagate the correct sigcontext structure to
4700 userspace, and consequently SBCL on a parisc64 kernel will not
4702 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4703 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4704 suppressed.) Also now that the compiler is looking at declarations
4705 in the environment, it checks optimization declarations as well,
4706 and suppresses inlining when (> DEBUG SPEED).
4707 * More fixes have been made to treatment of floating point exception
4708 treatment and other Unix signals. In particular, floating point
4709 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4710 * The detection and handling of control stack exhaustion (infinite
4711 or very deeply nested recursion) has changed. Stack exhaustion
4712 detection is now done by write-protecting pages at the OS level
4713 and applies at all optimization settings; when found, a
4714 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4715 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4716 be caught using IGNORE-ERRORS.
4717 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4718 correctly when transforming recursive LABELS functions to LETs.
4719 (thanks to Alexey Dejneka)
4720 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4721 that are names of constants or global variables.
4722 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4723 alien routines with docstrings.
4724 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4725 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4727 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4728 (thanks to Eric Marsden)
4729 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4730 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4731 * Bug fix: The SPARC backend can now compile functions involving
4732 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4733 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4734 to a functions expecting a PATHNAME-DESIGNATOR.
4735 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4736 lambda lists. (thanks to Alexey Dejneka)
4737 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4738 functions so that EXPORTing the name of the class doesn't cause
4739 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4740 to Antonio Martinez for reporting this)
4741 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4742 constant-folded without failing an assertion. (thanks to Einar
4743 Floystad Dorum for reporting this)
4744 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4745 types are now dealt with more correctly by the compiler.
4746 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4747 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4748 behaviour analogous to RENAME-FILE. This puts its behaviour more
4749 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4751 * The fasl file version number has changed again. (because of the
4752 bug fix involving the names of PCL MAKE-INSTANCE functions)
4754 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4755 * bug fix: Floating point exceptions are treated much more
4756 consistently on the x86/Linux and PPC/Linux platforms.
4757 * Array initialization with :INITIAL-ELEMENT is now much faster for
4758 cases when the compiler cannot open code the array creation, but
4759 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4760 array accesses have also seen a speed increase.
4761 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4762 specified. (This was at the root of some bad interactions between
4763 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4765 * bug fix: Internal error arguments for undefined functions are now
4766 computed correctly on the PPC/Linux platform.
4767 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4768 Raymond Toy's patch for CMU CL)
4769 * Support for the Solaris 9 operating environment has been included
4770 (thanks to Daniel Merritt)
4771 * A very ugly but hopefully complete draft of the missing FFI chapter
4772 of the manual has been created by reformatting the corresponding
4773 CMU CL manual chapter into (currently very ugly and incoherent)
4774 DocBook and bringing it up to date for SBCL behavior. Thus, the
4775 manual is now essentially complete, at least by my extreme
4776 once-and-only-once standards, whereby it's acceptable to refer to
4777 the doc strings of SB-EXT functions as the primary documentation.
4778 * The fasl file version number has changed again, due to cleanup of
4779 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4780 is no longer a static symbol.)
4782 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4783 * SBCL now builds with OpenMCL (version 0.12) as the
4784 cross-compilation host; also, more progress has been made toward
4785 bootstrapping under CLISP.
4786 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4788 * bug 158 fixed: The compiler can now deal with integer loop
4789 increments different from 1; fixing this turned out also to fix
4791 * bug 169 fixed: no more bogus warnings about using lexical bindings
4792 despite the presence of perfectly good SPECIAL declarations (thanks
4793 to David Lichteblau)
4794 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4795 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4796 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4798 * bug 180 fixed: Method combination specifications no longer ignore
4799 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4800 * bug fix: Structure type predicate functions now check their argument
4801 count as they should.
4802 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4803 correctly. (thanks to Pierre Mai)
4804 * minor incompatible change: The --noprogrammer option is deprecated
4805 in favor of the new --disable-debugger option, which is very similar.
4806 (The major difference is that it takes effect at a slightly different
4807 time at startup, causing handling of errors in --sysinit and
4808 --userinit files will be affected differently.) The
4809 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4810 been added to allow this functionality to be controlled from ordinary
4811 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4812 maintainers, who might want to run non-interactive scripts to
4813 build SBCL cores which will later be used interactively.)
4814 * minor incompatible change: The LOAD function no longer, when given
4815 a wild pathname to load, loads all files matching that pathname.
4816 Instead, an error of type FILE-ERROR is signalled.
4818 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4819 * bug 147 fixed: The compiler preserves its block link/count
4820 invariants more correctly now so that it doesn't crash. (thanks
4822 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4824 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4825 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4826 no-value-for-this-character as NIL (as specified by ANSI).
4827 * HOST-NAMESTRING on physical pathnames now returns a string that is
4828 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4829 (thanks to Christophe Rhodes)
4830 * The Alpha port handles icache flushing more correctly. (thanks to
4832 * More progress has been made toward bootstrapping under CLISP. (thanks
4833 to Christophe Rhodes)
4834 * The fasl file format has changed again, because dynamic loading
4835 on OpenBSD (which has non-ELF object files) motivated some cleanups
4836 in the way that foreign symbols are transformed and passed around.
4837 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4838 is no longer treated as whitespace by the reader, but instead as
4839 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4840 |A
\7fB|, instead of A as it used to.
4842 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4843 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4844 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4845 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4846 this as of 0.7.1.45, but was left out of the previous news section
4847 (thanks to Dan Barlow)
4848 * SBCL now runs on the Solaris operating system on SPARC architectures
4849 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4850 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4851 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4852 * SPARC backend cleanups, allowing builds of cores optimized for V8
4853 and V9 SPARCS, and also emission of code targeted to a particular
4854 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4856 * SBCL is closer to bootstrapping under CLISP, thanks to various
4857 fixes by Christophe Rhodes.
4858 * The fasl file format has changed again, to allow the compiler's
4859 INFO database to support symbol macros.
4860 * The user manual (in doc/) is formatted into HTML more nicely.
4861 (thanks to coreythomas)
4862 * The system is smarter about SUBTYPEP relationships, especially
4863 those involving NOT types (including types such as ATOM which are
4864 represented internally using NOT types). Thus SUBTYPEP is less
4865 likely to return (VALUES NIL NIL) in general, and in particular
4866 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4868 * The fasl file format has changed again, because the internal
4869 representation of types now includes a new slot to support the new
4870 SUBTYPEP-of-NOT-types logic.
4871 * (not a change in the main branch of SBCL, but a related prototype
4872 which can hopefully be merged into the main branch of SBCL in the
4873 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4874 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4875 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4876 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4877 dispatch macro character combinations. (thanks to Alexey Dejneka)
4878 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4879 that superficially look like logical namestrings correctly.
4880 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4882 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4883 default supplied-p) for &optional and &key arguments. (thanks to
4886 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4887 * incompatible change: The compiler is now less aggressive about
4888 tail call optimization, doing it only when (> SPACE DEBUG) or
4889 (> SPEED DEBUG). (This is an incompatible change because there are
4890 programs which relied on the old CMU-CL-style behavior to optimize
4891 away their unbounded recursion which will now die of stack overflow.)
4892 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4893 for non-GENCGC systems has been increased to 20M (since that
4894 seems much closer to the likely performance optimum for modern
4895 systems than the old 4M value was)
4896 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4897 and *DEBUG-PRINT-LEVEL*
4898 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4899 of CMU CL's support for SPARC, and various endianness and other
4900 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4901 * new syntactic sugar for the Unix command line: --load foo.bar is now
4902 an alternate notation for --eval '(load "foo.bar")'.
4904 ** The system now detects stack overflow and handles it gracefully,
4905 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4906 optimization settings. (This is a good thing in general, and
4907 its introduction in this version should be particularly timely
4908 for anyone whose code fails because of suppression of tail
4910 ** The system now hunts for the C variable "environ" in a more
4911 devious way, to avoid segfaults when the C library version differs
4912 between compile time and run time. (thanks to Christophe Rhodes)
4913 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4914 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4915 ** The compiler no longer issues bogus style warnings for undefined
4916 classes in the same source file as the DEFCLASSes which defined
4917 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4919 ** fixes in CONDITION class precedence list for undefined function
4920 errors (thanks to Alexei Dejneka)
4921 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4922 correctly. (thanks to Dan Barlow)
4923 ** portability fixes aiming at bootstrapping under CLISP (thanks
4924 to Dave McDonald and Christophe Rhodes)
4925 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4926 ** fixes in type translation and and type inference (thanks to
4928 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4929 ** various fixes in the new ports (thanks to Dan Barlow)
4930 * several changes related to debugging:
4931 ** suppression of tail recursion, as noted above
4932 ** stack overflow detection, as noted above
4933 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4934 is now the default. (For some time encapsulation has been more
4935 reliable than the breakpoint-based :ENCAPSULATE NIL
4936 implementation, at least on X86 systems; and I just noticed that
4937 encapsulation also seems closer to the spirit of the ANSI
4940 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4942 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4943 up properly again. (There was a packaging bug in 0.7.0 which
4944 left their definitions in SB-SYS::LOAD-FOREIGN and
4945 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4946 vital for most things which interface to C-level interfaces,
4947 like extensions working with sockets or databases or
4948 Perl-compatible regexes or whatever, and the need to fix
4949 this bug is the main reason that 0.7.1 was released so
4951 ** DEFGENERIC is now choosier about the methods it redefines, so that
4952 reLOADing a previously-LOADed file containing DEFGENERICs does
4953 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4954 cycle now works as it should. (thanks to Alexey Dejneka)
4955 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4956 fixed by Christophe Rhodes. (He actually submitted this patch
4957 months ago, and I delayed until after 0.7.0.)
4958 ** Bug 111 (internal compiler confusion about runtime checks on
4959 FUNCTION types) was fixed by Alexey Dejneka.
4960 * Some internal cleanups (getting rid of variables which aren't
4961 needed now that the byte interpreter is gone) caused the fasl
4962 file format number to change again.
4964 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4965 * major incompatible change: The default fasl file extension, i.e. the
4966 default extension for files produced by COMPILE-FILE, has changed
4967 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4969 ** There are many changes in the implementation of the compiler.
4970 SBCL is now essentially a compiler-only implementation of ANSI
4971 Common Lisp. EVAL still "interprets" a few special cases, but
4972 almost all the interesting cases are handled by creating
4973 a LAMBDA expression, calling COMPILE on it, then calling
4974 FUNCALL on the result.
4975 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4976 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4977 Since the code is newer, there might still be some new bugs
4978 (though not as many as before Martin Atzmueller's fixes:-). But
4979 the new code is substantially simpler and clearer, and hopefully
4980 any remaining bugs will be simpler, less fundamental, and more
4981 fixable then the bugs in the old code.
4982 ** The revised compiler is still a little unsteady on its feet.
4984 *** The debugging information it produces (particularly the names
4985 of FUNCTION objects) is sometimes much less useful than what
4986 the old compiler produced.
4987 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4988 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4989 within a MACROLET) has been temporarily weakened.
4990 ** There are new compiler optimizations for various functions:
4991 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4992 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4993 *** the math functions TRUNCATE, FLOOR, and CEILING
4994 *** the function-of-all-trades COERCE
4995 Mostly these should be transparent, but there's one
4996 potentially-annoying problem (bug 117): when the compiler
4997 inline-expands a function and does type analysis on the result,
4998 it can create control paths which have type mismatches, and
4999 when it can't prove that those control paths aren't taken,
5000 it will issue WARNINGs about the type mismatches. This is
5001 a particular problem in practice for the new sequence functions.
5002 It's not clear how this should be fixed, and for now, a
5003 workaround is given in the entry for 117 in the BUGS file.
5004 ** (Because of the interaction between the two previous items --
5005 occasional inlining problems and new inline expansions -- some
5006 of the new sequence function optimizations won't really kick in
5007 completely until debugging information, and then inlining, are
5008 straightened out in some future version.)
5009 * minor incompatible changes:
5010 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5011 DIRECTORY no longer implicitly promotes NIL slots of its
5012 pathname argument to :WILD. In particular, when you ask for the
5013 contents of a directory (which you used to be able to do without
5014 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5015 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5016 ** changes in behavior that ANSI explicitly defines to be
5017 implementation dependent:
5018 *** The new compiler-only implementation still conforms with ANSI,
5019 but acts a little different than before. Besides the obvious
5020 changes in performance tradeoffs (that the cost per form passed
5021 to EVAL has gone up, and the cost per form executed by EVAL
5022 has gone down), the behavior of the system changes a little
5023 because there are no longer any interpreted function objects.
5024 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5025 e.g. doing COMPILE on the output of interactive DEFUN is
5027 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5029 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5030 has changed from (:CL) to NIL.
5031 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5032 e.g. #\Newline and #\Tab, don't have names specified in the
5033 ANSI Common Lisp standard, is now based on their ASCII symbolic
5034 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5035 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5036 are no longer used for output.
5037 ** changes in internal implementation constants:
5038 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5039 4 million. (If your application spends a lot of time GCing and
5040 you have a lot of RAM, you might want to experiment with
5041 increasing it even more.)
5042 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5043 However, almost all old code should still continue to work without
5044 immediate update, as SB-C-CALL is now a (deprecated) nickname
5046 ** Old operator names in the style DEF-FOO are now deprecated in
5047 favor of new corresponding names DEFINE-FOO, for consistency with
5048 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5049 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5050 internal symbols, but a few supported extensions like
5051 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5052 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5053 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5054 etc. as you get deeper into recursive calls to the debugger
5055 command loop, instead of the old "5]", "5]]", "5]]]"
5056 sequence. (I was motivated to do this when squabbles between
5057 ILISP and SBCL left me very deeply nested in the debugger. In the
5058 short term, this change will probably provoke more ILISP/SBCL
5059 squabbles, but hopefully it will be an improvement in the long run.)
5060 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5061 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5062 function, since declaiming return types involving aliens is
5063 (1) annoyingly messy to do by hand and (2) vital to efficient
5064 compilation of code which calls such functions.
5065 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5066 longer reexported by the SB-EXT package. They're solely useful
5067 for alien code, so it seems more logical that you should get
5068 them from the SB-ALIEN package, not in SB-EXT.
5069 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5070 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5071 features. Instead, the code that they used to control is always
5072 built into the system.
5073 * many other bug fixes
5074 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5075 advantage of the new EVAL-WHEN stuff and to clean them up in
5076 general, and they are now more ANSI-compliant in a number of
5077 ways. Martin Atzmueller is responsible for a lot of this.
5078 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5080 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5081 *** correct ERROR type for various file operations
5082 *** some fixes for Lisp streams
5083 *** DEFMETHOD syntax checking
5084 *** changing old weird representation of debug information as
5085 strings (which, among their other deficiencies, don't transform
5086 correctly when you rename packages, and don't change their
5087 print representation when you change things like *PACKAGE*
5088 and *PRINT-LENGTH*) to symbols and lists of symbols
5089 He also made several improvements and fixed several bugs in DESCRIBE.
5090 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5092 *** misbehavior of WRITE-STRING/WRITE-LINE
5093 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5094 and several other LOOP problems as well
5095 *** DIRECTORY when similar filenames are present
5096 *** DEFGENERIC with :METHOD options
5097 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5098 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5099 *** argument ordering in FIND with :TEST option
5100 *** mishandled package designator argument in APROPOS-LIST
5101 *** various problems in the backquote readmacro
5102 *** a bug in APROPOS
5103 *** probably some others that I'm not describing very well here,
5104 since the CVS log documents them by reference to sbcl-devel
5105 messages, and the SourceForge archives aren't working well.:-(
5106 ** Dan Barlow improved the Alpha port (and is making progress on the
5107 PPC port, for those of you who think different).
5108 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5109 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5110 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5111 continues to work on the SPARC port (for those of you in a position
5112 to look down upon our little PC-compatible boxes from a great height).
5113 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5114 and uses that copy, rather than the current dynamic value, when
5115 it's trying to decide whether to truncate output. Thus e.g.
5116 (let ((*print-lines* 50))
5117 (pprint-logical-block (stream nil)
5119 (let ((*print-lines* 8))
5120 (print (aref possiblybigthings i) stream)))))
5121 should now truncate the logical block only at 50 lines, instead of
5122 often truncating it at 8 lines, as it did before.
5123 * The doc/cmucl/ directory, containing old CMU CL documentation
5124 from the time of the fork, is no longer part of the base system.
5125 SourceForge has shut down its anonymous FTP service, and with it
5126 my original plan for distributing the old CMU CL documentation
5127 there. For now, if you need these files you can download an old
5128 SBCL source release and extract them from it.
5129 * The fasl file version number changed again, for dozens of reasons,
5130 some of which are apparent above.
5132 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5133 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5134 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5135 patch, so that DISASSEMBLE output is much nicer.
5136 * The code in the SB-PROFILE package now seems reasonably stable.
5137 I still haven't decided what the final interface should look like
5138 (I'd like PROFILE to interact cleanly with TRACE, since both
5139 facilities use function encapsulation) but if you have a need
5140 for profiling now, you can probably use it successfully with
5141 the current CMU-CL-style interface.
5142 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5143 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5144 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5145 link now returns the dangling link itself, and for similar
5146 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5147 link itself. (In these cases the old code signalled an error and
5148 looped endlessly, respectively.) Thus, DIRECTORY now works even
5149 in the presence of dangling and cyclic symbolic links.
5150 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5151 is now a supported extension again, since the consensus on
5152 sbcl-devel was that it can be useful for ordinary development
5153 work, not just for debugging SBCL itself.
5154 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5155 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5156 that currently-defined functions might be redefined later with
5157 different return types.
5158 * Hash tables can be printed readably, as inspired by CMU CL code
5159 of Eric Marsden and SBCL code of Martin Atzmueller.
5160 * better error handling in CLOS method combination, thanks to
5161 Martin Atzmueller porting Pierre Mai's CMU CL patches
5162 * more overflow fixes for >16Mbyte I/O buffers
5163 * A bug in READ has been fixed, so that now a single Ctrl-D
5164 character suffices to cause end-of-file on character streams.
5165 In particular, now you only need one Ctrl-D at the command
5166 line (not two) to exit SBCL.
5167 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5169 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5170 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5171 does the right thing.
5172 * The implementation of some type tests, especially for CONDITION
5173 types, is now tidier and maybe faster, due to CMU CL code
5174 originally by Douglas Crosher, ported by Martin Atzmueller.
5175 * Some math functions have been fixed, and there are new
5176 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5177 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5178 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5179 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5180 likely to be built into sbcl-0.7.0.)
5181 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5182 CL, ported to SBCL by Martin Atzmueller)
5183 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5184 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5185 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5186 * There's a new slam.sh hack to shorten the edit/compile/debug
5187 cycle for low-level changes to SBCL itself, and a new
5188 :SB-AFTER-XC-CORE target feature to control the generation of
5189 the after-xc.core file needed by slam.sh.
5190 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5191 COMPILE-FILE is no longer supported, so that now every function
5192 gets an entry point, so that block compilation looks a little
5193 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5194 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5195 returns the number of bytes consed since the system started,
5196 rather than the number consed since the first time the function
5197 was called. (The new definition parallels ANSI functions like
5198 CL:GET-INTERNAL-RUN-TIME.)
5199 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5200 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5201 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5202 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5203 * Fasl file version numbers are now independent of the target CPU,
5204 since historically most system changes which required version
5205 number changes have affected all CPUs equally. Similarly,
5206 the byte fasl file version is now equal to the ordinary
5209 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5210 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5211 is no longer recognized. I apologize for this, because it was
5212 listed in SB-EXT as a supported extension, but I found that
5213 its existing behavior was poorly specified, as well as incorrectly
5214 specified, and it looked like too much of a mess to straighten it
5215 out. I have enough on my hands trying to get ANSI stuff to work..
5216 * many patches ported from CMU CL by Martin Atzmueller, with
5217 half a dozen bug fixes in pretty-printing and the debugger, and
5218 half a dozen others elsewhere
5219 * fixed bug 13: Floating point infinities are now supported again.
5220 They might still be a little bit flaky, but thanks to bug reports
5221 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5222 as flaky as they were.
5223 * The --noprogrammer command line option is now supported. (Its
5224 behavior is slightly different in detail from what the old man
5225 page claimed it would do, but it's still appropriate under the
5226 same circumstances that the man page talks about.)
5227 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5228 are now supported, and enabled by default. Thus, the compiler can
5229 handle many floating point and complex operations much less
5230 inefficiently. (Thus e.g. you can implement a complex FFT
5232 * The compiler now detects type mismatches between DECLAIM FTYPE
5233 and DEFUN better, and implements CHECK-TYPE more correctly, and
5234 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5235 thanks to patches from Martin Atzmueller.
5236 * various fixes to make the cross-compiler more portable to
5237 ANSI-conforming-but-different cross-compilation hosts (notably
5238 Lispworks for Windows, following bug reports from Arthur Lemmens)
5239 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5240 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5241 fixed thanks to Pierre Mai's CMU CL patches.
5242 * fixes to keep the system from overflowing internal counters when
5243 it tries to use i/o buffers larger than 16M bytes
5244 * fixed bug 45a: Various internal functions required to support
5245 complex special functions have been merged from CMU CL sources.
5246 (When I was first setting up SBCL, I misunderstood a compile-time
5247 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5248 * improved support for type intersection and union, fixing bug 12
5249 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5250 more obscure bugs as well
5251 * some steps toward byte-compiling non-performance-critical
5252 parts of the system, courtesy of patches from Martin Atzmueller
5253 * Christophe Rhodes has made some debian packages of sbcl at
5254 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5255 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5256 stable, but are nonetheless usable. When he's ready, I'd be happy
5257 to add them to the SourceForge "File Releases" section. (And if
5258 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5259 * new fasl file format version number (because of changes in
5260 internal representation of (OR ..) types to accommodate the new
5261 support for (AND ..) types, among other things)
5263 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5264 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5266 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5268 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5269 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5270 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5271 * DESCRIBE now works on structure objects again.
5272 * Most function call argument type mismatches are now handled as
5273 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5274 know whether the function will be redefined before the call is
5275 executed. (The compiler could flag local calls with full WARNINGs,
5276 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5277 it doesn't keep track of enough information to know whether calls
5278 are local in this sense.)
5279 * Compiler output is now more verbose, with messages truncated
5280 later than before. (There should be some supported way for users
5281 to override the default verbosity, but I haven't decided how to
5282 provide it yet, so this behavior is still controlled by the internal
5283 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5284 src/compiler/ir1util.lisp.)
5285 * Fasl file format version numbers have increased again, because
5286 support for the Gray streams extension changes the layout of the
5287 system's STREAM objects.
5288 * The Gray subclassable streams extension now works, thanks to a
5289 patch from Martin Atzmueller.
5290 * The full LOAD-FOREIGN extension (not just the primitive
5291 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5292 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5293 but like most other programs, it defaults to copying the Unix
5294 environment from the original process instead of starting the
5295 new process in an empty environment.
5296 * Extensions which manipulate the Unix environment now support
5297 an :ENVIRONMENT keyword option which doesn't smash case or
5298 do other bad things. The CMU-CL-style :ENV option is retained
5299 for porting convenience.
5300 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5301 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5303 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5305 * A patch from Martin Atzmueller seems to have solved the SIGINT
5306 problem, and as far as we know, signal-handling now works cleanly.
5307 (If you find any new bugs, please report them!)
5308 * The system no longer defaults Lisp source file names to types
5309 ".l", ".cl", or ".lsp", but only to ".lisp".
5310 * The compiler no longer uses special default file extensions for
5311 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5312 seems to expect a single default extension for all compiled code,
5313 and there's no compelling reason to try to stretch the standard
5314 to allow two different extensions.) Instead, byte-compiled files
5315 default to the same extension as native-compiled files.
5316 * Fasl file format version numbers have increased again, because
5317 a rearrangement of internal implementation packages made some
5318 dumped symbols in old fasl files unreadable in new cores.
5319 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5320 many fewer weird special cases.
5321 * Bug #17 (differing COMPILE-FILE behavior between logical and
5322 physical pathnames) has been fixed, and some related misbehavior too,
5323 thanks to a patch from Martin Atzmueller.
5324 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5325 by Tim Moore, ported to SBCL by Martin Atzmueller.
5326 * Martin Atzmueller fixed several filesystem-related problems,
5327 including bug #36, in part by porting CMU CL patches, which were
5328 written in part by Paul Werkowski.
5329 * More compiler warnings in src/runtime/ are gone, thanks to
5330 more patches from Martin Atzmueller.
5331 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5334 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5336 * DESCRIBE now works on CONDITION objects.
5337 * The debugger now handles errors which arise when trying to print
5338 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5340 * The build system now uses an additional file, customize-target-features.lisp,
5341 to allow local modifications to the target *FEATURES* list. (The point of
5342 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5343 debugging features enabled, without having to worry about propagating it
5344 into everyone's system when I do a "cvs update".) When no
5345 customize-target-features.lisp file exists, the target *FEATURES* list
5346 should be constructed the same way as before.
5347 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5348 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5349 warn about behavior which is undefined under the ANSI spec. Note: This
5350 is specified by ANSI, but it's not very popular with programmers.
5351 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5352 macro in the SBCL sources for an example of a workaround which you
5353 might use to make portable ANSI-standard code which does what you want.
5354 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5355 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5356 when it's used as a non-toplevel form. (This is required in order
5357 to implement the DEFCONSTANT-EQX macro.)
5358 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5359 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5360 funny things, due to bugs in the implementation of EVAL-WHEN
5361 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5362 non-toplevel DEFCONSTANTs are uncommon.)
5363 * The core file version number and fasl file version number have been
5364 incremented, because the old noncompliant DEFCONSTANT behavior involved
5365 calling functions which no longer exist, and because I also took the
5366 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5367 * fixed bug 1 (error handling before read-eval-print loop starts), and
5368 redid debugger restarts and related debugger commands somewhat while
5370 ** The QUIT debugger command is gone, since it did something
5371 rather different than the SB-EXT:QUIT command, and since it never
5372 worked properly outside the main toplevel read/eval/print loop.
5373 Invoking the new TOPLEVEL restart provides the same functionality.
5374 ** The GO debugger command is also gone, since you can just invoke
5375 the CONTINUE restart directly instead.
5376 ** The TOP debugger command is also gone, since it's redundant with the
5377 FRAME 0 command, and since it interfered with abbreviations for the
5379 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5381 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5382 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5383 some porting work by Martin Atzmueller)
5384 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5385 with a boatload of patches which he ported to SBCL. Now that those
5387 ** The system tries to make sure that its low-priority messages
5388 are prefixed by semicolons, to help people who like to use
5389 syntax highlighting in their ILISP buffer. (This patch
5390 was originally due to Raymond Toy.)
5391 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5392 patches originally written by Raymond Toy.
5393 ** The compiler understands coercion between single-value and
5394 multiple-VALUES type expressions better, getting rid of some very
5395 weird behavior, thanks to patches originally by Robert MacLachlan
5396 and Douglas Crosher.
5397 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5398 lambda lists, thanks to a patch originally by Pierre Mai.
5399 ** The system no longer bogusly warns about "abbreviated type
5401 ** The compiler gets less confused by inlining and RETURN-FROM,
5402 thanks to some patches originally by Tim Moore.
5403 ** The system no longer hangs when dumping circular lists to fasl
5404 files, thanks to a patch originally from Douglas Crosher.
5405 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5406 undefined function error.
5407 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5408 in structure slot initforms) for now, documented workaround instead:-|
5409 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5410 * fixed bug 5: added stubs for various Gray stream functions called
5411 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5412 installed, at least appropriate type errors are generated
5413 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5414 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5415 consistently in DEFMETHOD forms.
5416 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5417 it doesn't seem to affect SBCL after all
5418 * The C runtime system now builds with better optimization and many
5419 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5421 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5423 * The system is now under CVS at SourceForge (instead of the
5424 CVS repository on my home machine).
5425 * The new signal handling code has been tweaked to treat register
5426 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5427 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5428 downstream, e.g. in debug-int.lisp, has implicit dependencies
5429 on the unsignedness of integer representation of machine words,
5430 and that caused the system to bomb out with infinite regress
5431 when trying to recover from type errors involving signed values,
5432 e.g. (BUTLAST '(1 2 3) -1).)
5433 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5434 (This was one of the bugs Peter Van Eynde reported back in July.)
5435 * The system now uses code inspired by Colin Walters' O(N)
5436 implementation of MAP (from the cmucl-imp@cons.org mailing
5437 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5438 inline the MAP operation, and there is more than one
5439 sequence argument to the MAP call (so that it can't just
5440 do ETYPECASE once and for all based on the type of the
5441 single sequence argument). (The old non-inline implementation
5442 of the general M-argument sequence-of-length-N case required
5443 O(M*N*N) time when any of the sequence arguments were LISTs.)
5444 * The QUIT :UNIX-CODE keyword argument has been renamed to
5445 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5446 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5448 * Raymond Wiker's patches to port dynamic loading from Linux to
5449 FreeBSD have been added.
5450 * The BUGS file is now more nearly up to date, thanks in large part
5451 to Martin Atzmueller's review of it.
5452 * The debugger now flushes standard output streams before it begins
5453 its output ("debugger invoked" and so forth).
5454 * The core version number and fasl file version number have both
5455 been incremented, because of incompatible changes in the layout
5457 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5458 used to not be called for a saved Lisp image.)
5459 * Martin Atzmueller's version of a patch to fix a compiler crash,
5460 as posted on sbcl-devel 13 September 2000, has been installed.
5461 * Instead of installing Martin Atzmueller's patch for the
5462 compiler transform for SUBSEQ, I deleted the compiler transform,
5463 and transforms for some similar consing operations.
5464 * A bug in signal handling which kept TRACE from working on OpenBSD
5466 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5467 away by constant folding
5468 * The system now defines its address space constants in one place
5469 (in the Lisp sources), and propagates them automatically elsewhere
5470 (through GENESIS and the sbcl.h file). Therefore, patching the
5471 address map is less unnecessarily tedious and error-prone. The
5472 Lisp names of address space constants have also been systematized.
5473 * CVS tags like dollar-Header-dollar have been removed from
5474 the sources, because they have never saved me trouble and
5475 they've been source of trouble working with patches and other
5476 diff-related operations.
5477 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5478 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5480 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5482 * The system has been ported to OpenBSD.
5483 * The system now compiles with a simple "sh make.sh" on the systems
5484 that it's supported on. I.e., now you no longer need to tweak
5485 text in the target-features.lisp-expr and symlinks in src/runtime/
5486 by hand, the make.sh takes care of it for you.
5487 * The system is no longer so grossly inefficient when compiling code
5488 involving vectors implemented as general (not simple) vectors (VECTOR T),
5489 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5490 which dares to use the various sequence functions on non-simple
5491 vectors, takes less of a performance hit.
5492 * There is now a primitive type predicate VECTOR-T-P
5493 to test for the (VECTOR T) type, so that e.g.
5494 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5495 can now be compiled with some semblance of efficiency. (The old code
5496 turned the type declaration into a full call to %TYPEP at runtime!)
5497 * AREF on (VECTOR T) is still not fast, since it's still compiled
5498 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5499 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5500 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5501 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5502 without making full calls to SUBTYPEP at runtime.
5503 (Some analogous efficiency issues for non-simple vectors specialized to
5504 element types other than T, or for non-simple multidimensional arrays,
5505 have not been addressed. They could almost certainly be handled the
5506 same way if anyone is motivated to do so.)
5507 * The changes in array handling break binary compatibility, so
5508 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5509 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5510 instead of (VALUES T T).
5511 * By following the instructions that Dan Barlow posted to sbcl-devel
5512 on 2 July 2000, I was able to enable primitive dynamic object
5513 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5514 functionality is not implemented (since it calls ld to resolve
5515 library references automatically, requiring RUN-PROGRAM for its
5516 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5517 try to resolve library references) is now supported.
5518 * The system now flushes the standard output streams when it terminates,
5519 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5520 them at several other probably-convenient times, e.g. in each pass of
5521 the toplevel read-eval-print loop, and after evaluating a form given
5522 as an "--eval" command-line option. (These changes were motivated by a
5523 discussion of stream flushing issues on cmucl-imp in August 2000.)
5524 * The source transform for TYPEP of array types no longer assumes
5525 that an array whose element type is a not-yet-defined type
5526 is implemented as an array of T, but instead punts, so that the
5527 type will be interpreted at runtime.
5528 * There is now some support for cross-compiling in make.sh: each of
5529 the phases of make.sh has its own script. (This should be transparent
5530 to people doing ordinary, non-cross-compile builds.)
5531 * Since my laptop doesn't have hundreds of megabytes of memory like
5532 my desktop machine, I became more motivated to do some items on
5533 my to-do list in order to reduce the size of the system a little:
5534 ** Arrange for various needed-only-at-cold-init things to be
5535 uninterned after cold init. To support this, those things have
5536 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5537 symbols with such names are now uninterned after cold init).
5538 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5539 fasl files for cold load.
5540 ** Remove the old compiler structure pooling code (which used to
5541 be conditional on the target feature :SB-ALLOC) completely.
5542 ** Redo the representation of some data in cold init to be more compact.
5543 (I also looked into supporting byte compiled code at bootstrap time,
5544 which would probably reduce the size of the system a lot, but that
5545 looked too complicated, so I punted for now.)
5546 * The maximum signal nesting depth in the src/runtime/ support code has
5547 been reduced from 4096 to 256. (I don't know any reason for the very
5548 large old value. If the new smaller value turns out to break something,
5549 I'll probably just bump it back up.)
5550 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5552 * Many, many bugs reported by Peter Van Eynde have been added to
5553 the BUGS list; some have even been fixed.
5554 * While enabling dynamic object file loading, I tried to make the
5555 code easier to understand, renaming various functions and variables
5556 with less ambiguous names, and changing some function calling
5557 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5558 * While trying to figure out how to do the OpenBSD port, I tried to
5559 clean up some of the code in src/runtime/. In particular, I dropped
5560 support for non-POSIX signal handling, added various comments,
5561 tweaked the code to reduce the number of compilation warnings, and
5562 renamed some files to increase consistency.
5563 * To support the new automatic configuration functionality in make.sh,
5564 the source file target-features.lisp-expr has been replaced with the
5565 source file base-target-features.lisp-expr and the machine-generated
5566 file local-target-features.lisp-expr.
5567 * fixed a stupid quoting error in make.sh so that using CMU CL
5568 "lisp -batch" as cross-compilation host works again
5570 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5572 * DESCRIBE no longer tries to call itself recursively to describe
5573 bound/fbound values, so that it no longer fails on symbols which are
5574 bound to themselves (like keywords, T, and NIL).
5575 * DESCRIBE now works on generic functions.
5576 * The printer now prints less-screwed-up representations of closures
5577 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5578 * A private symbol is used instead of the :EMPTY keyword previously
5579 used to mark empty slots in hash tables. Thus
5580 (DEFVAR *HT* (MAKE-HASH-TABLE))
5581 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5582 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5583 now does what ANSI says that it should. (You can still get
5584 similar noncompliant behavior if bang on the hash table
5585 implementation with all the symbols you get back from
5586 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5587 This breaks binary compatibility, since tests for equality to
5588 :EMPTY are wired into things like the macroexpansion of
5589 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5591 * There's now a minimal placeholder implementation for CL:STEP,
5592 as required by ANSI.
5593 * An obscure bug in the interaction of the normal compiler, the byte
5594 compiler, inlining, and structure predicates has been patched
5595 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5596 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5598 * Missing ordinary arguments in a macro call are now detected even
5599 when the macro lambda list contains &KEY or &REST.
5600 * The debugger no longer complains about encountering the top of the
5601 stack when you type "FRAME 0" to explicitly instruct it to go to
5602 the top of the stack. And it now prints the frame you request even
5603 if it's the current frame (instead of saying "You are here.").
5604 * As specified by ANSI, the system now always prints keywords
5605 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5607 * The default initial SIZE of HASH-TABLEs is now smaller.
5608 * Type information from CLOS class dispatch is now propagated
5609 into DEFMETHOD bodies, so that e.g.
5610 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5612 is now basically equivalent to
5613 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5614 (DECLARE (TYPE SINGLE-FLOAT X))
5616 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5617 operation, without having to do run-time type dispatch.
5618 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5619 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5620 * Since I don't seem to be making big file reorganizations very often
5621 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5622 is overflowing my ability to conveniently back them up), I've finally
5623 checked the system into CVS. (The CVS repository is on my home system,
5624 not at SourceForge -- putting it on SourceForge might come later.)
5625 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5626 high-level GC-NOTIFY-FOO functions send their output. (There's
5627 still very little control of where low-level verbose GC functions
5628 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5629 less than it used to -- the GC-NOTIFY-FOO functions are now under
5630 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5631 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5632 in only one place in the source code, and propagates it automatically
5633 everywhere that it's needed. Thus e.g. when I bump the version from
5634 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5635 * The C source files now include boilerplate legalese and documentation
5636 at the head of each file (just as the Lisp source files already did).
5637 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5638 to his page will be replaced with a link to his new CLiki service.
5640 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5642 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5643 * The build process now looks for GNU make under the default name "gmake",
5644 instead of "make" as it used to. If GNU make is not available as "gmake"
5645 on your system, you can change this default behavior by setting the
5646 GNUMAKE environment variable.
5647 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5648 can build without error under CMU CL.
5650 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5652 * There is now a partial SBCL user manual (with some new text and some
5653 text cribbed from the CMU CL manual).
5654 * The beginnings of a profiler have been added (starting with the
5655 CMU CL profiler and simplifying and cleaning up). Eventually the
5656 main interface should be through the TRACE macro, but for now,
5657 it's still accessed through vaguely CMU-CL-style functions and macros
5658 exported from the package SB-PROFILE.
5659 * Some problems left over from porting CMU CL to the new
5660 cross-compilation bootstrap process have been cleaned up:
5661 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5662 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5663 part when getting rid of the compiler *BACKEND* stuff.)
5664 ** The value of *NULL-TYPE* was screwed up, because it was
5665 being initialized before the type system knew the final
5666 definition of the 'NULL type. This screwed up several key
5667 optimizations in the compiler, causing inefficiency in all sorts
5668 of places. (I found it because I wanted to understand why
5669 GET-INTERNAL-RUN-TIME was consing.)
5670 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5671 PROCLAIM FTYPE information. Unfortunately this broke binary
5672 compatibility again, since now the forms output by DEFGENERIC
5673 to refer to functions which didn't exist in 0.6.3.
5674 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5675 can use the new (as of 0.6.3) transform for SOME into MAP into
5677 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5678 values to (INTEGER 0 1000000), so that the time code will no longer
5679 occasionally get blown up by Linux returning 1000000 microseconds
5680 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5681 its output conform to the ANSI spec. (Alas, this makes its output
5682 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5683 * A full call to MAP NIL with a single sequence argument no longer conses.
5684 * fixes to problems pointed out by Martin Atzmueller:
5685 * The manual page no longer talks about multiprocessing as though
5686 it were currently supported.
5687 * The ILISP support patches have been removed from the distribution,
5688 because as of version 5.10.1, ILISP now supports SBCL without us
5689 having to maintain patches.
5690 * added a modified version of Raymond Toy's recent CMU CL patch for
5691 EQUALP comparison of HASH-TABLE
5693 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5695 * The system still can't cross-compile itself with
5696 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5697 entails), but at least it can compile more of itself that way
5698 than it used to be able to, and various buglets which were uncovered
5699 by trying to cross-compile itself that way have now been fixed.
5700 * This release breaks binary compatibility again. This time
5701 at least I've incremented the FASL file format version to 2, so that the
5702 problem can be detected reliably instead of just causing weird errors.
5703 * various new style warnings:
5704 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5705 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5706 ** using the lexical binding of a variable named in the *FOO* style
5707 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5708 as specified by ANSI.
5709 * *RANDOM-STATE* is no longer automatically initialized from
5710 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5711 default behavior of the system is to repeat its behavior every time
5712 it's run. If you'd like to change this behavior, you can always
5713 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5714 old convention there was no comparably easy way to get the system to
5715 repeat its behavior every time it was run.
5716 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5717 FTYPE declarations has been removed, in favor of their ANSI
5718 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5719 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5720 the types of their sequence arguments can be determined at compile time.
5721 This is done through a new open code expansion for MAP which eliminates
5722 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5723 argument types can be determined at compile time.
5724 * The optimizer now transforms COERCE into an identity operation when it
5725 can prove that the coerced object is already of the correct type. (This
5726 can be a win for machine generated code, including the output of other
5727 optimization transforms, such as the MAP transform above.)
5728 * Credit information has been moved from source file headers into CREDITS.
5729 * Source file headers have been made more standard.
5730 * The CASE macro now compiles without complaining even when it has
5733 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5735 * (Note that the way that the PCL macroexpansions were rewritten
5736 to accommodate the change in DEFGENERIC below breaks binary
5737 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5738 not run under sbcl-0.6.2. Once we get out of alpha releases,
5739 i.e. hit release 1.0.0, we'll probably try to maintain binary
5740 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5741 and sbcl-1.4.4. Until then, however, it might be fairly common
5742 for maintenance releases to break binary compatibility.)
5743 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5745 * The reporting of unhandled signals has been changed to print some
5746 explanatory text as well as the report form. (Previously only
5747 the report form was printed.)
5748 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5749 it defines, so that the compiler no longer issues undefined function
5750 warnings for compiled-but-not-yet-loaded generic functions.
5751 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5752 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5753 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5754 section of the ANSI spec are supported.
5755 * The "" nickname for the "KEYWORD" package has been removed.
5756 The reader still handles symbol tokens which begin with a package marker
5757 as keywords, but it doesn't expose its mechanism for doing so in the
5758 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5759 * The system now issues STYLE-WARNINGs for contradictory TYPE
5760 proclamations. (Warnings for contradictory FTYPE proclamations would
5761 be nice too, but those can't be done usefully unless the type system
5762 is made smarter about FUNCTION types.)
5763 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5764 systematized, so that "*target-*.lisp is supposed to exist only on the
5765 target and imply that there's a related file which exists on the
5766 host, and *host-*.lisp is supposed to exist only on the host and imply
5767 that there's a related file which exists on the target. This involves a
5768 lot of renaming. Hopefully the acute confusion caused by the renaming
5769 will be justified by the reduction in chronic confusion..
5770 ** runtime-type.lisp -> early-target-type.lisp
5771 ** target-type.lisp -> late-target-type.lisp
5772 ** early-host-format.lisp -> early-format.lisp
5773 ** late-host-format.lisp -> late-format.lisp
5774 ** host-error.lisp -> misc-error.lisp
5775 ** early-error.lisp -> early-target-error.lisp
5776 ** late-error.lisp -> late-target-error.lisp
5777 ** host-defboot.lisp -> early-defboot.lisp
5778 ** code/misc.lisp -> code/target-misc.lisp
5779 ** code/host-misc.lisp -> code/misc.lisp
5780 ** code/numbers.lisp -> code/target-numbers.lisp
5781 ** code/early-numbers.lisp -> numbers.lisp
5782 ** early-host-type.lisp -> early-type.lisp
5783 ** late-host-type.lisp -> late-type.lisp
5784 ** host-typep.lisp -> typep.lisp
5785 ** load.lisp -> target-load.lisp
5786 ** host-load.lisp -> load.lisp
5787 ** host-disassem.lisp -> disassem.lisp
5788 ** host-insts.lisp -> insts.lisp
5789 ** byte-comp.lisp -> target-byte-comp.lisp
5790 ** host-byte-comp.lisp -> byte-comp.lisp
5791 ** host-signal.lisp -> signal.lisp
5792 ** host-defstruct.lisp -> defstruct.lisp
5793 ** late-target-type.lisp -> deftypes-for-target.lisp
5794 Furthermore, several other previously target-only files foo.lisp (e.g.
5795 hash-table.lisp and random.lisp) have been split into a target-and-host
5796 foo.lisp file and a target-only target-foo.lisp file, with their key type
5797 definitions in the target-and-host part, so that the cross-compiler will
5798 know more about target types.
5799 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5800 gone away. In their place are various *BACKEND-FOO* variables
5801 corresponding to the slots of the old structure.
5802 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5803 into the target SBCL has been fixed.
5804 * The chill.lisp system for loading cold code into a running SBCL
5806 * Support for the CMU CL "scavenger hook" extension has been removed.
5807 (It was undocumented and unused in the CMU CL sources that SBCL was
5808 derived from, and stale in sbcl-0.6.1.)
5809 * Various errors in the cross-compiler type system were detected
5810 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5811 (enabling various consistency checks). Many of them were fixed,
5812 but some hard problems remain, so the compiler is back to
5813 running without *TYPE-SYSTEM-INITIALIZED* for now.
5814 * As part of the cross-compiler type system cleanup, I implemented
5815 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5816 * I have started adding UNCROSS calls throughout the type system
5817 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5818 on cross-compiler input files will be able to go away, and various
5820 * CONSTANTP now returns true for quoted forms (as explicitly required
5823 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5825 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5826 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5827 (MAKE-LIST -1). In the longer term, it ought to become true
5828 that declarations are assertions even at SAFETY 1. For now, it's not
5829 quite true even at SAFETY 3, but it's at least more nearly true..
5830 (Note that this change seems to increases the size of the system by
5831 O(5%) and to decrease the speed of the compiler by 20% or more.)
5832 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5833 for the problem of printing dozens of lines of distracting information
5834 about low-level system machinery as part of the top stack frame
5835 on entry to the debugger when an undefined function was called.
5836 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5837 is not reset to COMMON-LISP-USER.
5838 * Compilation of stuff related to dyncount.lisp has been made conditional
5839 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5840 smaller. The various dyncount-related symbols have been moved into
5841 a new "SB-DYNCOUNT" package.
5842 * tty-inspect.lisp has been renamed to inspect.lisp.
5843 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5844 feature has gone away. (When we eventually port to other flavors of
5845 libc and/or Unix, we'll try to make the differences between flavors
5846 invisible at the user level.)
5847 * Various other *FEATURES* tags, and/or their associated conditionals,
5848 have been removed if obsolescent, or given better documentation, or
5849 sometimes given more-mnemonic names.
5851 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5853 * tidied up "make.sh" script
5854 * tidied up system directory structure
5855 * better "clean.sh" behavior
5856 * added doc/FOR-CMUCL-DEVELOPERS
5857 * many many small tweaks to output format, e.g. removing possibly-confusing
5858 trailing #\. character in DESCRIBE-INSTANCE
5859 * (EQUALP #\A 'A) no longer signals an error.
5860 * new hashing code, including EQUALP hashing
5861 * tidied up Lisp initialization and toplevel
5862 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5863 * command line argument processing
5864 * added POSIX-GETENV function to deal with Unix-ish environment variables
5865 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5866 terminating SBCL on EOF
5867 * non-verbose GC by default
5868 * There is no more "sbcl" shell script; the sbcl file is now the C
5869 runtime executable (just like CMU CL).
5870 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5872 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5873 symbol and package information as Lisp native symbol and package objects
5874 instead of strings naming symbols and strings naming packages. This way,
5875 whenever packages are renamed (as in warm init), debug information is
5876 transformed along with everything else.
5877 * tweaked the optimization policy declarations which control the building
5878 of SBCL itself. Now, among other things, the system no longer saves
5879 source location debugging information. (This helps two problems at once
5880 by reducing SBCL size and by keeping SBCL from trying to look for its
5881 sources -- which may not exist -- when reporting errors.)
5882 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5883 debugging and testing purposes
5884 * cleaned up printing, making the printer call PRINT-OBJECT for
5885 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5886 methods, giving nearly-ANSI behavior
5887 * converted almost all special variables to use *FOO* naming convention
5888 * deleted PARSE-TIME functionality, since it can be done portably
5889 * moved some files out of cold init into warm init
5890 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5892 * regularized formatting of source files
5893 * added an install.sh script
5894 * fixed ridiculous memory usage of cross-compiler by making
5895 compiler/alloc.lisp not try to do pooling unless it can hook
5896 itself into the GC of the cross-compilation host. Now the system
5897 builds nicely on my old laptop.
5898 * added :SB-ALLOC in target-features.lisp-expr
5899 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5900 was not implemented)
5901 * re-did condition handling and note reporting in the compiler. Notes
5902 are no longer handled by signalling conditions. Style warnings
5903 and warnings are handled more correctly and reported in such a way
5904 that it's easy to find one or the other in your output (so that you
5905 can e.g. figure out which of many problems caused COMPILE-FILE to
5907 * changed the severity of several compiler warnings from full WARNING
5908 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5909 compiler note reporting so that it doesn't use the condition system
5910 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5911 COMPILE-FILE command)
5912 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5913 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5914 no longer supported, since their implementation was deeply intertwingled
5915 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5916 * removed bogus "support" for compiler macros named (SETF FOO), and
5917 removed the compiler macro for SETF INFO (but only after making a fool
5918 of myself on the cmucl-imp mailing list by posting a bogus patch for
5919 DEFINE-COMPILER-MACRO..)
5920 * Compiled files containing forms which have side effects on the Lisp
5921 reader (such as DEFPACKAGE forms) are now handled more correctly.
5922 (Compiler queuing of top level lambdas has been suppressed by setting
5923 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5924 * deleted various currently-unused source files, e.g. gengc.lisp. They
5925 may be added back at some point e.g. when porting to other architectures,
5926 but until they are it's distracting to distribute them and to try to
5928 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5929 there were so many of them they're just distractions, and UNCROSS is
5930 known to be able to handle the current sources
5931 * moved PROFILE functionality into TRACE, so that it will be clear
5932 how the wrapping and unwrapping of functions when you profile them
5933 interacts with the wrapping and unwrapping of functions when you
5934 trace them. (Actually, the functionality isn't there yet, but at least
5935 the interface specification is there. Hopefully, the functionality will
5936 arrive with some future maintenance release.)
5937 * removed host-oops.lisp
5938 * changed signature of QUIT function to allow UNIX-CODE argument
5939 * fixed READ-SEQUENCE bug
5940 * tweaked verbose GC output so that it looks more like the progress
5941 output that ANSI specifies for functions like LOAD
5942 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5943 * added <http://sbcl.sourceforge.com> to the banner information printed by