1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.45:
3 * enhancement: largefile support on Solaris.
4 * optimization: ERROR and CERROR are approximately 5 times faster.
5 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
6 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
7 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
8 up instance creation in those cases.
9 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
10 lifetime analysis to overwrite closed-over variables (lp#681092).
11 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
12 were not handled correctly (lp#713063).
13 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
15 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
17 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
19 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
20 * enhancement: ~/ and ~user/ are treated specially in pathnames.
21 Refer to documentation for details.
22 * enhancement: ASDF has been updated to version 2.010.
23 * optimization: mutated closed-over variables that are only accessed by
24 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
25 declared to be DYNAMIC-EXTENT) are stored directly in their containing
26 stack frame, rather than allocating a VALUE-CELL (lp#586103).
27 * optimization: UNWIND-PROTECT cleanup functions are now declared
29 * bug fix: backtracing function with &REST arguments now shows the full
30 argument list. (lp#310173)
31 * bug fix: return types for functions with complex lambda-lists are now
32 derived properly (lp#384892)
33 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
34 long string arguments slowed the compiler down to a crawl.
35 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
36 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
37 in the DEFMETHOD body.
38 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
39 messages, being instead replaced with the corresponding function name.
40 * bug fix: don't derive overly complex unions of numeric types for arithmetic
41 operators. (lp#309448)
43 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
44 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
45 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
46 * enhancement: ALLOCATION-INFORMATION also provides the page the object
48 * enhancement: default dynamic-space size can be configured at build-time
49 without touching source, using the --dynamic-space-size argument to make.sh.
50 * enhancement: DESCRIBE recognizes symbols naming optimization policy
51 qualities, and mentions ALWAYS-BOUND declarations.
52 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
54 * enhancement: ASDF has been updated to 2.009.
55 * enhancement: the system detects known type-erros in calls better,
56 signalling a full warning about violated proclaimed FTYPEs and violations
57 of derived FTYPEs within the same file, including self-calls.
58 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
59 * optimization: constant-folding exploits numeric and character types, in
60 addition member types.
61 * optimization: numeric, character and member types that are inhabited by
62 exactly one value are tested with EQL.
63 * optimization: more conditional branches are eliminated during IR1.
64 Branches are simplified before performing if/if-conversion, and simple
65 equivalent branches (that only read the same constant or variable) are
67 * improvements to the Windows port:
68 ** change: canonical unparsing form for pathname namestrings now uses / as
69 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
70 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
71 on Windows. (thanks to Kalyanov Dmitry)
72 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
74 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
75 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
76 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
77 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
79 * bug fix: interrupts arriving during CL:OPEN caused an error.
80 * bug fix: overeager character buffering could cause input to block
81 spuriously when reading from a pipe (lp#643686)
82 * bug fix: more efficient timer expiry should avoid starvation on systems
83 where number of SIGALRMs per second is restricted. (lp#375515)
84 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
85 * bug fix: compile-times no longer scale linearly with the size of
86 quoted lists in source-code. (lp#654289)
87 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
88 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
90 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
91 an error for eg. STRUCTURE. (lp#458015)
92 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
93 (lp#613871, thanks to Roman Marynchak)
94 * bug fix: more reliable &REST list type derivation. (lp#655203)
95 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
96 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
97 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
98 also declared NOTINLINE. (lp#655581)
99 * bug fix: the compiler could attempt to emit constant left shifts of
100 greater value than n-word-bits. (lp#309063)
101 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
102 type information for the function being set. (lp#659220)
103 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
104 containing self-calls were recompiled with a new signature, and failed
105 to warn when a self-call using the old signature was left in. (lp#655126)
106 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
107 :DEFAULT when the default external had character size other than 8 bits.
109 * bug fix: derived types of functions in the same file were implicitly
110 trusted, leading to potential heap corruption when those function were
111 defined incompatibly. (lp#657499)
112 * bug fix: existing ASDF source registries are ignored when building
114 * bug fix: short-form DEFSETF checks that the second argument is a symbol
115 (lp#655824, thanks to Roman Marynchak)
116 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
117 package-lock violation was detected. (lp#660752)
118 * bug fix: the system can store different docstrings for a single function
119 under different names. (lp#661631, regression from 1.0.29.24)
120 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
121 properly. (lp#384801)
122 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
123 of specified length could confuse the type derivation in unsafe code.
125 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
126 fork with multiple Lisp threads running is made on every platform,
127 not just Darwin. (lp#451111)
128 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
129 around when core was saved, which could cause undefined behaviour when the
131 * bug fix: Allow UNTRACE of functions that are no longer defined
132 (lp#667657, thanks to Attila Lendvai)
133 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
134 compile-time warning (lp#664373, thanks to Stas Boukarev)
136 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
137 * incompatible change: FD-STREAMS no longer participate in the serve-event
138 event-loop by default. (lp#316072)
139 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
140 affects streams from CL:OPEN.
141 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
142 default, but this is liable to change: applications needing serve-event
143 for socket streams should explicitly request it using :SERVE-EVENTS T
145 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
147 * enhancement: CLOS effective method functions and defclass slot typechecking
148 function now have debug names for use in backtraces and profiles.
149 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
151 * enhancement: symbols are printed using fully qualified names in several
152 error and warning messages which are often associated with package
153 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
154 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
155 thanks to Andrew Golding)
156 * bug fix: reading /proc files on Linux works. (lp#425199)
157 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
159 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
160 breaking code that tried to write the value of a printer control variable.
161 (lp#581564, thanks to Stas Boukarev)
162 * bug fix: WRITE compiler macro did not handle output stream designators
163 correctly. (lp#598374, thanks to Stas Boukarev)
164 * bug fix: better availability of names of foreign functions in backtraces
165 on Linux. (lp#626962, thanks to Stas Boukarev)
166 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
167 lp#627581, thanks to Josh Elsasser and Jim Wise)
168 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
169 thanks to Josh Elsasser)
170 * bug fix: using aliases for builtin classes as defmethod specializers
171 without adding DEFTYPEs for them works. (lp#618387)
172 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
174 * bug fix: legally dynamic-extent lists and vectors used as
175 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
176 * bug fix: inline-expansion creating references to dead lambda-variables
177 (lp#454681, thanks to Alexey Dejneka)
178 * bug fix: better error message for bogus numerical arguments to RANDOM.
179 (lp#598986, thanks to Stas Boukarev)
180 * bug fix: the compiler occasionally inlined references from incompatible
181 environments occurs. (lp#308951)
182 * bug fix: the compiler threw an error when trying to compile a local
183 function (labels or flet) known to take a specialized complex argument.
184 (not in launchpad, reported by sykopomp in #lispgames)
185 * bug fix: package-locks failed to protect against compile-time effects of
186 DEFUN when the symbol previously had a macro definition. (lp#576637)
187 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
188 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
189 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
190 * bug fix: evaluation in debugger REPL works using the global context when
191 in frames that do not have sufficient debug information.
192 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
194 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
196 * bug fix: interrupt taking longer than the requested period caused SLEEP
197 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
199 changes in sbcl-1.0.42 relative to sbcl-1.0.41
201 ** Cross-compilation host is now specified to make.sh using
202 command-line argument --xc-host=<command> instead of a positional
203 argument. (thanks to Daniel Herring)
204 ** Install location can be specified to make.sh using command-line
205 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
206 * optimization: The default implementation of
207 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
208 * enhancement: Explicit memory barrier operations are now available for use
209 by multithreaded code. See documentation for details.
210 * enhancement: Experimental support for threading on Linux/PPC.
211 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
212 * bug fix: EXPT signals an error if first argument is a zero and second
213 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
214 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
215 (lp#576594, thanks to Roman Marynchak)
216 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
217 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
219 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
220 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
221 cached, leading to many fewer expensive calls to
222 COMPUTE-APPLICABLE-METHODS.
223 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
224 CLASS argument, search for and call an appropriate optimized ctor function
226 * bug fix: WRITE always returns the correct value.
228 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
229 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
230 * bug fix: Name conflicts between symbols passed as arguments to a single
231 call to IMPORT no longer add multiple symbols with the same name to the
232 package (detectable via DO-SYMBOLS).
233 * bug fix: support building without the dlshim on darwin x86 and x86-64
235 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
237 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
238 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
240 * bug fix: linkage-table entries on PPC now no longer overflow their
241 space allocation (potentially causing crashes if they are written out
243 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
244 platforms, preventing the GC from seeing stale pointers on the control
245 stack in subsequent GCs (which would, and does, break invariants).
246 * bug fix: 32-bit unicode external formats now work on big-endian systems.
247 * bug fix: Literal characters with code points greater than about 32767
248 now work on PPC UNICODE builds.
249 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
250 high order bits are explicitly cleared out. In some contrived situations,
251 this could lead to wrong results in mixed real/complex float arithmetic.
252 * bug fix: Fix function/macro redefinition warnings when building with
253 clisp. (lp#576787, thanks to Josh Elsasser)
254 * new platform: experimental support for ppc/openbsd (thanks to Josh
256 * bug fix: Floating-point traps now work on ppc/linux.
258 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
259 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
260 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
261 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
262 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
263 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
264 SB-THREAD:GRAB-MUTEX.
265 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
266 contain additional data structures and tools for concurrent programming;
267 at the moment it contains a lock-free queue, and a lock-free mailbox
269 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
270 GET-MUTEX but takes &key rather than &optional parameters. Also added
271 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
273 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
274 SB-THREAD:WAIT-ON-SEMAPHORE.
275 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
277 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
278 conditions to defer the deadline for forever.
279 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
281 * enhancement: errors from NO-APPLICABLE-METHOD and
282 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
283 generic function call.
284 * enhancement: SB-BSD-SOCKET improvements
285 ** sockets and socket streams now have a more informative printed
286 representation based on the corresponding SOCKET-NAME and
288 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
290 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
291 CL:CLOSE when appropriate, and no longer disassociates the stream
292 from the socket if close failed. (lp#543951)
293 * improvements to the instrumenting profiler
294 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
295 ** optimization: counters no longer use locks for the overflow mode.
296 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
297 incurred an off-by-one miscount.
298 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
299 * enhancement: improved DEFMETHOD pretty-printing.
300 * enhancement: perform range reduction when arguments are too large for
301 x87's transcendentals (instead of returning 0). (lp#327192)
302 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
303 some of CL-PPCRE's macros. (lp#570079)
304 * enhancement: our machine code is slightly less hostile to valgrind on
306 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
307 to Robert Swindells and Aleksej Saushev)
308 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
309 * bug fix: a rare case of startup-time page table corruption.
310 * bug fix: a semaphore with multiple waiters and some of them unwinding due
311 to timeouts could be left in an inconsistent state.
312 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
313 * bug fix: misoptimization of multiplication by one in
314 (SB-C::FLOAT-ACCURACY 0) policies.
315 * bug fix: miscounts in SB-PROFILE.
316 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
317 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
318 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
319 up itself" (March 2010) for further details.
320 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
321 against length of the list if the element is found before the specified
322 END is reached. (thanks to Alec Berryman, lp#554385)
323 * bug fix: errors signalled during package graph modification no longer
324 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
325 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
326 :SB-DOC feature. (lp#552564)
327 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
328 * bug fix: more robust runtime executable path detection. (lp#375549)
329 * bug fix: GCD always returns positive values. (lp#413680)
330 * bug fix: Converting division to multiplication by reciprocal handles
332 * bug fix: We were too eager in eliding range reduction tests on x87.
333 The maximal magnitude is 2^63, not 2^64.
334 * bug fix: Transforms for TRUNCATE don't die when the result is completely
336 * bug fix: Maybe restore buildability on Alpha.
337 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
339 * bug fix: RANDOM-STATE can be printed readably again.
340 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
341 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
342 types) could result in type mismatches during compilation.
344 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
345 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
346 stack frame thrown from.
347 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
348 compiler optimization qualities inside dynamic extent of its body.
349 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
350 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
352 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
353 constraint propgation, allowing better compilation eg. when used to
354 access structures with WITH-SLOTS. (lp#520366)
355 * optimization: the compiler is now more aware of the type of the underlying
356 storage vector for multidimensional simple arrays resulting in better code
357 for accessing such arrays.
358 * optimization: passing NIL as the environment argument to TYPEP no longer
359 inhibits optimizing it. (lp#309788)
360 * optimization: more efficient register usage when handling single-float
361 arguments on x86-64. (thanks to Lutz Euler)
362 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
363 pre-allocated temporary vectors. (lp#496249)
364 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
365 in :INITIAL-CONTENTS. (lp#523612)
366 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
367 functions. (lp#524707)
368 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
369 WITH-SLOTS usages during compilation.
370 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
371 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
372 all x86oid platforms with :UD2-BREAKPOINTS target feature.
373 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
374 instruction (tested on x86oid linux with ud2-breakpoints).
375 * bug fix: slam.sh now works on win32.
376 * bug fix: better differences of numeric types. (lp#309124)
377 * bug fix: arrays declared intersection and union types can have their
378 upgraded element type derived. (lp#316078)
379 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
380 threads started during profiling. (lp#472499)
381 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
383 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
384 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
385 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
386 values instead of signaling an error. (lp#309093)
387 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
389 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
390 declarations (lp#497321)
391 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
392 and failed to detect circular lists (lp#452008)
393 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
395 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
396 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
397 due to it, so that handlers can run.
398 * bug fix: reparsing undefined types if they have become defined since
400 * bug fix: missing &REST type in a proclamation for a function with both
401 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
402 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
403 expanded calls (lp#542174)
404 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
405 than just at toplevel form.
407 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
408 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
409 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
410 but work on type specifiers.
411 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
412 to name a type specifier.
413 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
414 specifier is valid where "valid" basically means "would be accepted as
415 second argument of TYPEP".
416 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
417 returns the function's declared, or derived FTYPE.
418 * new feature: SB-POSIX now supports accessing the d_ino member of
419 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
420 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
421 provide for seeding a RANDOM-STATE object with user-provided data or
422 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
423 attempt to initialize the returned state from the operating system's
424 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
425 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
426 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
427 * bug fix: Fix grammar and style issues for the docstrings of
428 printer-related variables and functions. (Thanks to mon_key; launchpad
430 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
432 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
433 in a row even though a handler defered the deadline long into the
435 * bug fix: A deadline handler was run without interrupts enabled for a
436 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
437 in infinitely spinning, non-killable threads.
438 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
439 before reaching the erring stack frame.
440 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
441 real power. (launchpad bug lp#525949)
442 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
443 GENCGC platforms. (launchpad bug lp#529014)
444 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
445 (launchpad bug lp#525916)
446 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
447 (Thanks to Robert Goldman)
449 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
450 * optimization: ROUND with a single single-float or double-float argument
451 is properly inlined when possible.
452 * optimization: Slightly better code is generated for integer<->float
453 conversions and for single-float<->double-float conversions on x86-64.
454 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
455 code for 32-bit and 64-bit rotations on x86-64.
456 * bug fix: The install script changes the ownership of directories as well
457 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
458 launchpad bug lp#508485)
459 * bug fix: TRUNCATE with a single single-float or double-float argument is
460 properly inlined when possible. (launchpad bug lp#489388)
461 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
462 no longer causes a compiler error on x86 and ppc.
463 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
464 always relative to *READTABLE* rather than the passed argument.
466 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
467 * minor incompatible change: threading support is now enabled by default
469 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
471 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
472 are now caught and reported just like errors during macroexpansion.
473 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
474 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
475 * enhancement: ASDF systems can now depends on SB-QUEUE.
476 * fixes and improvements related to Unicode and external formats:
477 ** bug fix: error handling and restart usage in the ucs-2 external format
479 ** there is now an implementation of the ucs-4 external format.
480 ** the utf-16 and utf-32 external formats are supported.
481 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
482 in the environment. setenv() and unsetenv() are also provided. (reported by
483 Fare Rideau; launchpad bug lp#460455)
484 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
485 loading. This ensures sensible errors for .FASL files from other
486 implementations on case-insensitive filesystems. (reported by Willem
487 Broekema; launchpad bug lp#489417)
488 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
489 Willem Broekema; launchpad bug lp#489698).
490 * bug fix: some minor code rearrangements to reenable warning-free building
491 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
492 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
494 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
497 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
498 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
499 * improvement: support O_LARGEFILE access to files larger than 2GB on
500 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
501 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
502 definitions for methods specializing on the passed class itself.
503 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
504 definitions for methods specializing on the passed class itself, or on
506 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
507 about itself during the build (e.g. for M-? in Slime), if this flag is
508 enabled in customize-target-features.lisp. This will increase the core
509 size by about 5-6mb, though, so it's mostly interesting to SBCL
511 * new feature: various GENCGC tuning parameters have been experimentally
512 documented and exported from SB-EXT. See documentation for details.
513 * fixes and improvements related to Unicode and external formats:
514 ** the Unicode character database has been upgraded to the
515 Unicode 5.2 standard, giving names and properties to a number of new
516 characters, and providing a few extra characters with case
518 ** improvement: restarts for providing replacement input/output on coding
519 errors for fd-stream external formats.
520 ** improvement: where :<encoding> is a keyword corresponding to an
521 external format the system supports, it is now possible to specify
522 (:<encoding> :replacement <character>) as an external format which will
523 automatically substitute <character> on encoding or decoding errors for
524 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
526 ** improvement: the file streams underlying the standard streams (such as
527 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
528 which uses the replacement mechanism to handle encoding errors,
529 preventing various infinite error chains and unrecoverable I/O
531 ** minor incompatible change: the utf-8 external format now correctly
532 refuses to encode Lisp characters in the surrogate range (char-codes
533 between #xd800 and #xdfff).
534 ** fix a typo preventing conversion of strings into octet vectors
535 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
537 ** fix a bug in the octet multibyte handling of decoding errors and the
538 USE-VALUE restart. (launchpad bug lp#314939)
539 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
540 restart on fd-stream decoding errors.
541 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
542 error is near the end of file.
543 ** fix a double-error case in unibyte octet conversions, when the first
544 use of USE-VALUE is ignored.
545 ** fix bugs in handling of undefined code points in unibyte encodings.
546 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
547 streams after an UNREAD-CHAR.
548 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
549 object is allocated in a boxed region of dynamic space.
550 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
551 fork with multiple Lisp threads running is made, instead of going
552 ahead with unpredictable consequences. (reported by Leslie Polzer)
553 * bug fix: uses of slot accessors on specialized method parameters within
554 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
555 error while finalizing the class. This fix may cause classes with slot
556 accessors to be finalized later than previously. (reported by Lars Rune
557 Nøstdal; launchpad bug lp#473699)
558 * bug fix: restore buildability on the MIPS platform. (regression from
559 1.0.30.38, reported by Samium Gromoff)
560 * bug fix: inspecting closures is less likely to fail with a type error.
561 * bug fix: no timer starvation when setting the system clock back.
562 (launchpad bug lp#460283)
563 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
564 standard pprint dispatch table as specified by CLHS.
565 * bug fix: give CLISP a hint about a type declaration to enable it to build
566 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
568 * bug fix: correctly dump literal objects in defaulting forms of arglists.
569 (reported by Attila Lendvai; launchpad bug lp#310132)
570 * bug fix: distinguish in type specifiers between arrays that might be
571 complex and arrays that are definitely complex. (launchpad bug lp#309129)
572 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
573 type. (reported by Levente Mészáros; launchpad bug lp#485972)
574 * bug fix: setting the value of a symbol-macro within a method in the
575 presence of type declarations works properly again. (reported by Iban
576 Hatchondo; launchpad bug lp#485019)
578 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
579 * optimization: faster FIND and POSITION on strings of unknown element type
580 in high SPEED policies. (thanks to Karol Swietlicki)
581 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
583 * improvement: better error signalling for bogus parameter specializer names
584 in DEFMETHOD forms (reported by Pluijzer)
585 * bug fix: DELETE-FILE once again works on logical pathnames (regression
587 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
589 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
590 removes previous default initargs (reported by Lars Rune Nøstdal and
592 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
593 lambda-lists. (reported by Peter Seibel)
594 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
595 correctly when starting from an executable core without saved runtime
596 options (reported by Faré Rideau, thanks to Zach Beane)
597 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
598 an optimization note instead. (reported by Martin Cracauer)
599 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
600 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
601 new process group if it doesn't need to share stdin with the sbcl
602 process. (thanks to Leslie Polzer)
603 * bug fix: SATISFIES could be misoptimized to refer to a local function.
604 (reported by Stanislaw Halik)
606 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
607 * improvement: stack allocation is should now be possible in all nested
608 inlining cases: failure to stack allocate when equivalent code is manually
609 open coded is now considered a bug.
610 * improvements related to Unicode:
611 ** the Unicode character database has been upgraded to the
612 Unicode 5.1 standard, giving names and properties to a number of new
613 characters, and providing a few extra characters with case
615 ** the system now recognizes and produces names for Unicode Hangul
617 ** the EBCDIC-US external-format is now supported for octet operations
618 (as well as for stream operations).
619 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
620 be used to output toplevel compile-time effects into a separate .CFASL
622 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
623 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
625 * optimization: TRUNCATE on known single- and double-floats is upto 25%
627 * optimization: division of floating point numbers by constants uses
628 multiplication by reciprocal when an exact reciprocal exists.
629 * optimization: multiplication of single- and double-floats floats by
630 constant two has been optimized.
631 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
632 sufficient type information is available. (thanks to Leslie Polzer)
633 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
634 known structure objects are as efficient as defstruct generated accessors.
635 * optimization: unused vector creation can now be optimized away.
636 * improvement: ASDF systems can now depends on SB-INTROSPECT.
637 * improvement: a STYLE-WARNING is signalled when a generic function
638 clobbers an earlier FTYPE proclamation.
639 * improvement: the compiler is able to track the effective type of
640 generic function across method addition and removal even in the
641 absence of an explicit DEFGENERIC.
642 * improvement: DESCRIBE now reports on symbols naming undefined
643 but assumed or declared function as well.
644 * improvement: recompilation of systems using SB-GROVEL now works
645 (thanks to Leslie Polzer)
646 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
647 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
649 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
650 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
651 well as user defined declaration names.
652 ** VARIABLE-INFORMATION is now aware of alien variables.
653 * improvement: improved address space layout on OpenBSD (thanks to Josh
655 * improvement: pretty-printing of various Lisp forms has been improved
656 (thanks to Tobias Rittweiler)
657 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
658 unused were deleted in safe code. (reported by John Fremlin)
659 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
661 * bug fix: some out-of-line array predicates were missing (reported by
663 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
665 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
666 (thanks to Larry D'Anna)
667 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
668 as well. (reported by Josh Elsasser)
669 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
670 leading to possible attempts to delete the same file twice. See docstring
671 on DELETE-FILE for details. (reported by John Fremlin)
672 * bug fix: DELETE-FILE once again deletes the file named by the pathname
673 designator argument, rather than its truename. (reported by Luis
675 * bug fix: the low-level debugger had 32-bit assumptions and was missing
676 information about some array types. (thanks to Luis Oliveira)
677 * bug fix: moderately complex combinations of inline expansions could
678 be miscompiled if the result was declared to be dynamic extent.
679 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
680 form (+ <variable> <integer>) were miscompiled under certain
682 * bug fix: in some cases no compiler note about failure to stack allocate
683 was emitted, even if the objects were in fact heap allocated.
684 * bug fix: minor violation of "otherwise inaccessible" rule for stack
685 allocation could cause objects users might reasonably expect to
686 be heap allocated to be stack allocated.
687 * bug fix: DESCRIBE signalled an error for generic functions under
688 certain circumstances. (thanks to Leslie Polzer)
689 * bug fix: Fixed spelling of an error message.
691 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
692 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
693 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
694 of SB-THREAD:THREAD-ERROR-THREAD.
695 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
696 * new feature: docstrings for local and anonymous functions are no longer
697 discarded. (thanks to Leslie Polzer)
698 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
699 values in other threads.
700 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
701 about object allocation.
702 * optimization: division of a real float by a complex float is implemented
703 with a specialised code sequence.
704 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
705 keywords is an order of magnitude faster.
706 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
707 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
708 methods, and similarly for non-standard metaclass classes as long as there
709 are no methods additional on MAKE-INSTANCE.
710 * optimization: more efficient type-checks for FIXNUMs when the value
711 is known to be a signed word on x86 and x86-64.
712 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
713 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
715 * optimization: compiler is smarter about delegating argument type checks to
717 * optimization: several character functions are now compiled somewhat more
718 efficiently. (reported by Lynn Quam)
719 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
720 * improvement: less unsafe constant folding in floating point arithmetic,
721 especially for mixed complex/real -float operations.
722 * optimization: constant double and single floats are stored in native
723 unboxed format on x86[-64].
724 * optimization: smarter code for arithmetic operations with constant floats,
725 complex floats, or integers on x86[-64].
726 * optimization: smarter code for conjugate/multiplication of float complexes
727 and abs/negate of floats on x86-64.
728 * optimization: more efficient complex float and real float operations on
730 * improvement: complex float division is slightly more stable.
731 * improvement: DESCRIBE output has been reworked to be easier to read and
732 contains more pertinent information.
733 * improvement: failure to provide requested stack allocation compiler notes
734 provided in all cases (requested stack allocation not happening without a
735 note being issued is now considered a bug.)
736 * bug fix: SB-POSIX exports the documented types and functions
737 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
738 types. (reported by "abhi")
739 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
740 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
741 (thanks to Paul Khuong)
742 * bug fix: looping around HANDLER-CASE could silently consume stack space
743 on each iteration. (reported by "foobar")
744 * bug fix: better error signalling when calls to functions seeking elements
745 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
746 (reported by Tobias Rittweiler)
747 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
748 directory components now works as it used to. (various prolems reported by
749 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
750 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
751 (reported by Elliot Slaughter, thanks to Stas Boukarev)
752 * bug fix: bogus undefined variable warnings from fopcompiled references to
753 global variables. (thanks to Lars Rune Nøstdal)
754 * bug fix: foreign function names should now appear in backtraces on
755 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
756 * bug fix: SETF compiler macro documentation strings are not discarded
758 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
759 (thanks to Alex Plotnick)
760 * bug fix: SLEEP accepts large integer arguments, truncating them to
761 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
762 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
763 * bug fix: compiler notes for expensive slot type checks could be emitted
764 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
766 changes in sbcl-1.0.29 relative to 1.0.28:
767 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
768 https://bugs.launchpad.net/sbcl
769 Bugs can be reported directly there, or by sending email to
770 sbcl-bugs@lists.sourceforge.net
771 (no subscription required.)
772 * minor incompatible change: under weak type checking policy integer
773 types are weakened less aggressively.
774 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
775 allowed to return, which causes SBCL to quit with exit status 0. Previously
776 if the function returned with a small integer return value, that value
777 was accidentally reused as the exit status.
778 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
779 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
780 :HASH-FUNCTION argument. Refer to user manual for details.
781 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
783 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
784 microseconds since the Unix epoch on all platforms.
785 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
786 allows the compiler to safely elide boundedness checks for special
788 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
789 the symbol, prohibits both lexical and dynamic binding. This is mainly an
790 efficiency measure for threaded platforms, but also valueable in
792 * new feature: UNC pathnames are now understood by the system on Windows.
793 * optimization: the compiler uses a specialized version of FILL when the
794 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
796 * optimization: accesses to potentially non-simple arrays where element type
797 is known are 50% faster.
798 * optimization: compiler now generates faster array typechecking code.
799 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
801 * optimization: multidimensional array accesses in the absence of type
802 information regarding array rank are approximately 10% faster due to
803 open coding of ARRAY-RANK.
804 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
805 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
807 * optimization: result of call to VECTOR can now be stack allocated.
808 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
809 as long as the resulting array is one-dimensional and has a known
810 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
811 length of the list matches the known length of the vector does not
812 allocate the list as an intermediate step. Ditto for VECTOR and simple
814 * optimization: MAKE-ARRAY can now stack allocate in the presence of
815 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
816 known element type, and is known to be simple and one dimensional.
817 * improvement: SBCL now emits a compiler note where stack allocation was
818 requested but could not be provided (not in all cases, unfortunately)
819 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
820 * improvement: pretty-printing loop has been implemented properly. (thanks
821 to Tobias Rittweiler)
822 * documentation: CLOS slot typechecing policy has been documented.
823 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
824 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
825 pointer, leading to memory faults. (thanks to Bart Botta)
826 * bug fix: better floating point exception handling on x86/OpenBSD.
827 (thanks to Josh Elsasser)
828 * bug fix: exit status from QUIT when called under --script was lost
829 (reported by Hubert Kauker)
830 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
831 same implementation of FILL to initialize the array, even if a more
832 efficient one was available (reported by Stas Boukarev, thanks to
834 * bug fix: potential miscompilation of array stack allocation on x86 and
835 x86-64. (reported by Time Tossavainen)
836 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
837 result in their subforms being treated as top level forms. (reported by
839 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
840 than a machine register could leave garbage in the high bits of the
841 result register (bug 316325).
842 * bug fix: disable address space randomization Linux/x86-64 as well,
843 not just x86-64. (reported by Ken Olum)
844 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
845 generate incorrect code.
846 * bug fix: #201; type inference for CONS and ARRAY types could derive
847 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
848 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
849 could not be assigned to or bound with PROGV. (reported by Lorenz
851 * bug fix: the value of CL:- in the inspector was the previous expression
852 evaluated rather than the expression being evaluated.
853 * bug fix: constants can no longer be locally declared special.
854 * bug fix: signals delivered to threads started from foreign land (read:
855 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
856 thread by blocking all signals and resignalling.
857 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
858 from :INITFORM, if any.
860 changes in sbcl-1.0.28 relative to 1.0.27:
861 * a number of bugs in cross-compilation have been fixed, with the ultimate
862 result that building under (at least) clisp should be much more reliable.
863 * minor incompatible changes: echo-streams now propagate unread-char to the
864 underlying input stream, and no longer permit unreading more than one
866 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
867 frames, allowing for instance more reliable backtraces.
868 * improvement: the debugger REPL can now reference lexical variables
869 by name directly for code compiled with (DEBUG 3).
870 * improvement: errors from malformed declarations now have better source
871 paths associated with them. (thanks to Tobias Rittweiler)
872 * optimization: faster local calls on x86/x86-64
873 * bug fix: some error messages for out-of-bound array indexes confused the
874 index and the bound. (thanks to Stas Boukarev)
875 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
877 * bug fix: running regressions tests in shells without OSTYPE set now works.
878 (reported by Harald Hanche-Olsen)
879 * bug fix: more robust static space exhaustion signalling from
880 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
881 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
882 docstring away instead of storing it under names such as (LAMBDA (X)).
883 (reported by Leslie Polzer)
884 * bug fix: timers could go off in the wrong order, be delayed indefinitely
885 (thanks to Ole Arndt for the patch)
886 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
887 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
888 potentially-invalid effective methods in its cache.
889 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
890 instances as well (thanks to Paul Khuong)
891 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
892 SB-POSIX:WAITPID and their C equivalents.
893 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
895 changes in sbcl-1.0.27 relative to 1.0.26:
896 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
897 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
898 * improvement: the system either recovers from stack exhaustion or dies
899 properly as opposed to leaving the user uncertain of whether the handler
900 trampled on some random memory next to the stack or having to rely on
901 --lose-on-corruption (which is still a good idea to use in production
902 because stack exhaustion can happen in signal handlers which will likely
904 * bug fix: fix gc related interrupt handling bug on ppc (regression from
905 1.0.25.37, reported by Harald Hanche-Olsen)
906 * bug fix: work around signal delivery bug in darwin (regression from
907 1.0.25.44, reported by Sidney Markowitz)
908 * bug fix: fix ERROR leaking memory (reported by David Thompson)
910 changes in sbcl-1.0.26 relative to 1.0.25:
911 * incompatible change: an interruption (be it a function passed to
912 INTERRUPT-THREAD or a timer function) runs in an environment where
913 interrupts can be enabled. The interruption can use
914 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
915 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
916 potentially running out of stack. Keep in mind that in the absence
917 of WITHOUT-INTERRUPTS some potentially blocking operation such as
918 acquiring a lock can enable interrupts.
919 * incompatible change: GC-OFF and GC-ON are removed, as they were
920 always unsafe. Use WITHOUT-GCING instead.
921 * new feature: runtime option --disable-ldb
922 * new feature: runtime option --lose-on-corruption to die at the
923 slightest hint of possibly non-recoverable errors: running out of
924 memory, stack, alien stack, binding stack, encountering a memory
925 fault, etc. In the absence of --lose-on-corruption a warning is
927 * enhancement: detect binding stack exhaustion
928 * enhancement: detect alien stack exhaustion on x86/x86-64
929 * improvement: generally more stable and reliable interrupt handling
930 * improvement: there is a per thread interruption queue,
931 interruptions are executed in order of arrival
932 * improvement: a repeating timer reschedules itself when the it has
933 finished, but expiration times are spaced equally. If an
934 expiration time is in the past it will trigger after a short grace
935 period that may give a chance to other things to run.
936 * optimization: slightly faster gc on multithreaded builds
937 * optimization: faster WITHOUT-GCING
938 * bug fix: when JOIN-THREAD signals an error, do it when not holding
939 important locks so that the debugger/handler doesn't produce
940 recursive errors or deadlock.
941 * bug fix: real-time signals are not used anymore, so no more
942 hanging when the system wide real-time signal queue gets full.
943 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
945 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
946 * bug fix: fix random memory faults related to interrupts on alpha
947 * bug fix: fix random memory faults related to interrupts on sparc
948 * bug fix: fix deadlocks related to starting threads
949 * bug fix: fix deadlines on locks on futex platforms
950 * bug fix: restore errno in signal handlers
951 * bug fix: fix deadlocks related to hash tables
952 * bug fix: fix deadlocks in pcl
954 changes in sbcl-1.0.25 relative to 1.0.24:
955 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
956 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
957 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
958 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
959 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
960 better name and does not return values so stale on multiprocessor systems.
961 Also, HOLDING-MUTEX-P was added for about the only sane usage of
963 * improvement: unithread builds keep track of MUTEX-VALUE.
964 * improvement: reading from a TWO-WAY-STREAM does not touch the output
965 stream anymore making it thread safe to have a concurrent reader and
966 a writer, for instance, in a pipe.
967 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
968 arguments, making compiler-macros for SETF-functions able to inspect
969 their constant arguments.
970 * improvement: COMPILE-FILE reports times with millisecond accuracy
971 (thanks to Luis Oliveira)
972 * optimization: CHAR-CODE type derivation has been improved, making
973 TYPEP elimination on subtypes of CHARACTER work better. (reported
974 by Tobias Rittweiler, patch by Paul Khuong)
975 * bug fix: setting alien structure fields of type struct by value now
976 computes the right offset for the memory copy.
977 * bug fix: compilation problem involving inlined calls to aliens with
978 result type VOID. (reported by Ken Olum)
979 * bug fix: #235a; sequential inline expasion in different policies no
980 longer reuses the functional from the previous expansion site.
981 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
982 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
983 * bug fix: named ENUMs in multiply-referenced alien record types no longer
984 cause an implied type redefinition. Regression from 1.0.21.29.
985 * bug fix: sign-extension of small signed return values now works with C
986 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
987 * improvements to the Windows port:
988 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
989 Westfold, thanks to Rudi Schlatte)
991 changes in sbcl-1.0.24 relative to 1.0.23:
992 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
993 vector of a multidimensional SIMPLE-ARRAY.
994 * new feature: the system now signals a continuable error if standard
995 readtable modification is attempted. (thanks to Tobias Rittweiler)
996 * new feature: DIRECTORY has been extended with a non-standard keyword
997 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
998 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
999 has been robustified and documented better. (thanks to Robert Goldman)
1000 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1001 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1002 * tradeoff: constant FORMAT control strings are now compiled unless
1003 SPACE > SPEED (previously only when SPEED > SPACE.)
1004 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1006 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1008 * bug fix: lexical type declarations are now correctly reported by
1009 SB-CLTL2. (reported by Larry D'Anna)
1010 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1011 using UTF-8 as external format. (thanks to Luis Oliveira)
1012 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1013 are signalled correctly. (thanks to Stas Boukarev)
1014 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1015 designator. (thanks to Tobias Rittweiler)
1016 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1017 designator, and returns T instead of the function. (thanks to
1019 * bug fix: direct superclasses of STANDARD-CLASS and
1020 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1021 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1022 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1023 when no class with the named slot yet exists no longer causes a
1024 compile-time style-warning.
1025 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1026 in safe code. (reported by Didier Verna)
1027 * bug fix: #430; nested structure constructors can stack allocate.
1028 * bug fix: on some 64-bit platforms dynamic space size was truncated
1029 to #xffff0000 bytes. (reported by Benjamin Lambert)
1030 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1031 REPL unusable. (reported by Daniel Herring)
1032 * bug fix: return values of READ-SEQUENCE did not take :START into
1033 account on file streams, regressions since 1.0.12.22. (reported by
1034 Thomas Russ, patch by Paul Khuong)
1035 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1036 method specializer used to confuse permuation vector optimization.
1037 * bug fix: system inserted bogus implicit type declarations for local
1038 special variables in DEFMETHOD bodies.
1039 * bug fix: #354; duplicated frames in backtraces due to
1040 non-tail-call-optimized XEPs to functions with return type NIL
1042 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1043 initializes structure object slots according to DEFSTRUCT initforms,
1044 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1045 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1046 (reported by Bruno Haible and Stephen Wilson)
1047 * bug fix: #395; fill-pointer output streams used now support
1048 element-type BASE-CHAR as well.
1049 * bug fix: compiler error when attempting to derive return value of
1050 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1052 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1054 * bug fix: Mac OS X binaries should now be portable between Leopard
1057 changes in sbcl-1.0.23 relative to 1.0.22:
1058 * enhancement: when disassembling method functions, disassembly
1059 for the associated fast function is also produced.
1060 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1062 * optimization: printing with *PRINT-PRETTY* true is now more
1063 efficient as long as the object being printed doesn't require
1064 special handling by the pretty printer.
1065 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1066 now interact correctly with type declarations.
1067 * partial bug fix: PCL detects infinite recursion during wrapper
1068 validation. (thanks to Attila Lendvai)
1069 * bug fix: #426; nested function calls are inlined properly.
1070 Previously if FOO was an inline function, in calls of the form
1071 (FOO (FOO ...)) the outer call was not inlined.
1072 * bug fix: long long arguments passed in registers to alien
1073 functions on PowerPC Linux and NetBSD are now handled correctly
1074 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1076 changes in sbcl-1.0.22 relative to 1.0.21:
1077 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1078 for the shared object in the current directory, but passes the native
1079 namestring of the designated pathname to the operation system's shared
1080 object loading function as-it.
1081 * minor incompatible change: --disable-debugger toplevel option now takes
1082 effect before processing of initialization files and --eval or --load
1084 * new feature: new commandline argument: --script, which supports
1085 shebang lines. See documentation for details. (based on work by
1087 * new feature: SAVE-LISP-AND-DIE can save current values of
1088 --dynamic-space-size and --control-stack-size in the executable core,
1089 causing it to skip normal runtime option processing. See documentation
1090 for details. (thanks to Zach Beane)
1091 * enhancement: inoccous calls to EVAL or generic functions dispatching
1092 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1093 * enhancement: the system no longer resignals errors from --load and
1094 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1095 associated with the original error to be lost. (thanks to Ariel
1097 * enhancement: :DONT-SAVE keyword argument has been added to
1098 LOAD-SHARED-OBJECT for controlling interaction with
1099 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1100 the effects of an earlier LOAD-SHARED-OBJECT call.
1101 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1102 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1103 provided. (reported by Cedric St-Jean)
1104 * bug fix: circularity handling in the reader did not treat raw
1105 structure slots correctly. (reported by Cedric St-Jean)
1106 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1107 file descriptors when there were none.
1108 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1109 was broken. (reporteed by Willem Broekema)
1110 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1111 pathnames without a directory.
1112 * bug fix: COMPILE-FILE did not warn about undefined variable
1113 references at toplevel, and LOAD of the resulting fasl did
1114 not signal an error.
1115 * bug fix: functions with non-required arguments used to end up with
1116 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1117 * bug fix: redefining a function with non-required arguments didn't
1118 update the system's knowledge about its call signature properly.
1119 * bug fix: fixed #431; incompatible alien record type redefinitions
1120 are detected and handled. (reported by Neil Haven)
1121 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1122 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1124 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1125 after alien stack frames.
1126 * bug fix: strings passed to mk{s,d}temp lacked null termination
1128 changes in sbcl-1.0.21 relative to 1.0.20:
1129 * new feature: the compiler is able to track the effective type of a
1130 generic function across method addition and removal.
1131 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1132 appropriately typed structure slots without locking.
1133 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1134 information like those gathered by TIME using a programming-friendly
1136 * new feature: TIME reports time taken even if the form performs a
1137 non-local transfer of control.
1138 * enhancement: reduced conservativism on GENCGC platforms: on
1139 average 45% less pages pinned (measured from SBCL self build).
1140 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1141 mutate constant symbols or violate declaimed type of the symbol.
1142 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1143 sleeping on the semaphore in heavily contested semaphores.
1144 * bug fix: semaphores and condition variables were not interrupt
1146 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1147 owned by other threads anymore.
1148 * bug fix: FIND on lists called KEY outside the specified
1149 subsequence. (reported by budden)
1150 * bug fix: LOG doesn't use single-float intermediate results when
1151 given mixed integer and double-float arguments, leading to better
1152 precision. (reported by Bob Felts)
1153 * bug fix: LOG with base zero returned values of inconsistent type.
1155 changes in sbcl-1.0.20 relative to 1.0.19:
1156 * minor incompatible change: OPTIMIZE qualities
1157 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1158 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1159 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1160 * documentation: some slot access efficiency guidelines have been
1161 added to the user manual.
1162 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1163 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1164 as ASSOC and MEMEBER.
1165 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1166 to more efficient EQ-comparison versions more often.
1167 * optimization: enhanced derivation of DOLIST iteration variable type
1169 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1171 * optimization: runtime lookup of function definitions can be
1172 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1173 * optimization: compiler is able to derive the return type of
1174 (AREF (THE STRING X) Y) as being CHARACTER.
1175 * optimization: CLRHASH on empty hash-tables no longer does pointless
1176 work. (thanks to Alec Berryman)
1177 * optimization: REPLACE deftransforms don't punt when :START1 or
1179 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1180 no longer emits a code deletion note. (reported by Andrew
1182 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1183 functions with an odd number of &OPTIONAL arguments, a &REST
1184 argument, and one or more &KEY arguments at the call site.
1185 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1186 arguments appeared at call sites as well.
1187 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1188 READ-LINE &co can no longer read from them afterwards. (reported
1190 * bug fix: fixed #427: unused local aliens no longer cause compiler
1191 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1193 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1194 alien-stack leakage. (reported by Andy Hefner)
1195 * bug fix: PROGV signals an error when an attempt to violate declared
1196 type of a variable or bind a constant is made.
1197 * bug fix: SET signals an error when an attempt to violate declared
1198 type of a variable is made.
1199 * bug fix: restart computation during the execution of a restart
1200 test function no longer causes infinite recursion. (reported by
1202 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1203 signals an error. (thanks to Pierre Mai)
1204 * bug fix: EXPORT left symbol unexported in conflict situations.
1205 (thanks to Michael Weber)
1206 * bug fix: correctly handle name conflicts involving CL:NIL.
1207 (thanks to Michael Weber)
1208 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1209 conflicts arising from USEing package with conflicting symbols
1210 correctly. (thanks to Michael Weber)
1212 changes in sbcl-1.0.19 relative to 1.0.18:
1213 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1214 warnings that go otherwise unhandled will be muffled if they are
1215 of the type that's the value of this variable.
1216 * optimization: stack allocation is slightly more efficient on x86
1218 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1219 where a raw slot always is initialized using the initform whose
1220 type is not know sufficiently well a compile-time are now compiled
1221 correctly. (reported by John Morrison)
1222 * bug fix: compiler no longer makes erronous assumptions in the
1223 presence of non-foldable SATISFIES types.
1224 * bug fix: stack analysis missed cleanups of dynamic-extent
1225 arguments in non-let-converted calls to local functions.
1226 * improvements to the Windows port:
1227 ** adjusted address spaces for building on both Win32 and
1228 Win64. (thanks for John Connors)
1229 * fixed some bugs revealed by Paul Dietz' test suite:
1230 ** interval arithmetic during type derivation used inexact integer
1231 to single-float coercions.
1232 ** arithmetic operations involving large integers and single
1233 floats give the same results in compiled and interpreted code.
1234 ** deriving the result type of COERCE no longer signals an error
1235 if the derived type of the second argument is a MEMBER type
1236 containing invalid type specifiers.
1237 ** ADJOIN with constant NIL as second argument works correctly.
1238 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1240 changes in sbcl-1.0.18 relative to 1.0.17:
1241 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1242 profiles only the current thread.
1243 * minor incompatible change: changes to SYMBOL-VALUE of constants
1244 defined with DEFCONSTANT now signal an error.
1245 * enhancement: SB-SPROF now has support for wallclock profiling,
1246 and is also able to profile specific threads. REPORT output
1247 has also additional sorting options.
1248 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1250 * optimization: structure allocation has been improved
1251 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1252 ** out of line constructors are ~10% faster.
1253 ** inline constructors are ~15% faster.
1254 ** inline constructors are capable of dynamic extent allocation
1255 (generally on x86 and x86-64, in some cases on other platforms
1257 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1259 * optimization: file compiler is now able to coalesce non-circular
1260 lists, non-base strings, and bit-vectors. Additionally, constants
1261 are never referenced through SYMBOL-VALUE at runtime.
1262 * optimization: code defining methods on PRINT-OBJECT (and other
1263 generic functions in the COMMON-LISP package) now loads faster.
1264 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1266 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1267 fasl is now deleted. (reported by Attila Lendvai)
1268 * bug fix: READ-LINE always returned NIL for the last line in files.
1269 (reported by Yoshinori Tahara)
1270 * bug fix: more accurate disassembly annotations of foreign function
1271 calls. (thanks to Andy Hefner)
1272 * bug fix: trimming non-simple strings and non-string string
1273 designators when the there is nothing to trim works properly.
1274 (thanks to James Knight)
1275 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1276 (thanks to Travis Cross)
1277 * fixed some bugs revealed by Paul Dietz' test suite:
1278 ** NIL is a valid function name (regression at 1.0.13.38)
1279 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1280 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1281 fill pointers properly (regression at 1.0.12.23)
1282 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1283 displacement indices properly (regression at 1.0.12.23)
1285 changes in sbcl-1.0.17 relative to 1.0.16:
1286 * temporary regression: user code can no longer allocate closure
1287 variable storage on stack, due to bug 419 without explicitly
1288 requesting it. Please consult sbcl-devel for advice if you need to
1289 use this feature in the meanwhile.
1290 * new feature: runtime argument --control-stack-size can be used to
1291 adjust thread default control stack size.
1292 * enhancement: improved TIME output
1293 ** all times are reported using the measured accuracy (milliseconds
1294 for real and GC times, microseconds for everything else.)
1295 ** processor cycle counts on x86 and x86-64.
1296 ** interpreted forms are counted for both evaluator modes.
1297 ** number of lambdas converted by the compiler is reported.
1298 ** CPU percentage report (computed from real and total run time.)
1299 ** more comprehensive run time reporting, using a condenced format
1300 ** interperted form, lambda, and page fault counts are omitted
1302 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1304 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1305 * optimization: two argument forms of LAST are upto ~10% faster
1306 in normal SPEED policies.
1307 * optimization: NCONC no longer needs to heap cons its &REST list
1308 in normal SPEED policies.
1309 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1310 to Sidney Markowitz)
1311 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1312 regression since 1.0.9.1. (thanks to Eric Marsden)
1313 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1314 since 1.0.15.36. (thanks to Paul Khuong)
1315 * bug fix: LAST when always returned the whole list when given a bignum
1316 as the second argument.
1317 * bug fix: dynamic extent allocation of nested lists and vectors
1318 could leak to otherwise accessible parts.
1319 * bug fix: invalid optimization of heap-allocated alien variable
1321 * bug fix: fasl header checking is less vulnerable to different
1322 platform word lengths.
1323 * bug fix: more correct assembler syntax for GNU binutils
1324 2.18.50.0.4 support. (thanks to Marijn Schouten)
1325 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1327 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1328 declarations) successfully. (reported by Attila Lendvai)
1330 changes in sbcl-1.0.16 relative to 1.0.15:
1331 * minor incompatible change: revert the changes to sb-posix's error
1332 signaling added in 1.0.14.
1333 * minor incompatible change: change PROBE-FILE back to returning
1334 NIL whenever we can't get a truename, as was the case before 1.0.14.
1335 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1336 inherits from ERROR instead of just CONDITION.
1337 * new feature: SB-INTROSPECT can provide source locations for instances
1338 as well. (thanks to Tobias Rittweiler)
1339 * optimization: binding special variables now generates smaller code
1340 on threaded platforms.
1341 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1342 and cases where no :TEST is given but the compiler can infer that
1343 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1344 * optimization: better LOGNOT on fixnums.
1345 * optimization: modular arithmetic for a particular requested width
1346 is implemented using a tagged representation unless a better
1347 representation is available.
1348 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1349 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1350 for wellformedness and returns a specialized vector. (reported by
1351 Francois-Rene Rideau)
1352 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1353 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1354 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1355 unscheduling timer at the same time as another timer fires.
1356 * bug fix: don't reschedule timers for dead threads.
1357 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1358 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1359 bogus errors if select() was interrupted.
1360 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1362 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1363 * enhancement: cleaner backtraces for interactive interrupts, as
1364 well as other cases where the interesting frames used to be
1365 obscured by interrupt handling frames.
1366 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1367 now supported, and tracing a whole package using (TRACE "FOO") now
1368 traces SETF-functions as well.
1369 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1370 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1371 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1372 * unreadably printed representation of hash-tables now includes
1374 * bug fix: partially fixed #188: type propagation from assignments
1375 is now more efficient.
1376 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1377 'DOUBLE-FLOAT) are not flushable.
1378 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1379 full address of the object, and none of the tag bits.
1380 * bug fix: readably printing hash-tables now respects other printer
1381 control variables. (reported by Cedric St-Jean)
1382 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1383 keyword with MAKE-HASH-TABLE.
1384 * bug fix: export SB-POSIX:MKSTEMP.
1385 * bug fix: SORT was not interrupt safe.
1386 * bug fix: XREF accounts for the last node of each basic-block as
1388 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1389 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1390 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1391 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1392 create obsolete instances in the case of redefinition or
1393 obsoletion of a superclass. (thanks to Andy Hefner)
1394 * bug fix: Support for the Alpha architecture has been revived; it had
1395 suffered somewhat from lack of maintenance since sbcl-1.0.
1396 * improvements to the Windows port:
1397 ** The system detects the codepage to use at startup, instead of
1398 using the value from the saved core. (thanks to Kei Suzuki)
1400 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1401 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1402 (see documentation for details.)
1403 * revived support for OpenBSD (contributed by Josh Elsasser)
1404 * partially fixed bug #108: ROOM no longer suffers from occasional
1405 (AVER (SAP= CURRENT END)) failures.
1406 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1407 bodies no longer cause a WARNING to be signalled. (reported by
1409 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1410 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1411 the bug in TRUNCATE.) (reported by Michael Weber)
1412 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1413 no samples. (reported by Andy Hefner)
1414 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1415 no longer appear as (NIL ...) frames in backtraces.
1416 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1417 is now actually exported from SB-EXT as documented. (reported by
1419 * bug fix: sb-aclrepl now correctly understands how to inspect
1420 single-floats on 64-bit platforms where single-floats are not boxed.
1421 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1422 yet been finalized. (reported by Levente Meszaros)
1423 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1424 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1425 SBCL-specific optimize qualities.
1427 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1428 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1429 an executable in the search path, and does so in the child
1430 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1431 been removed; it can be found in the CVS history, for somebody who
1432 needs that search behavior (see the manual).
1433 * minor incompatible change: compiler policy re. weakening type
1434 checks has changed: now type checks are weakened only if SAFETY < 2
1436 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1437 unparsing of directory pathnames as files. Analogously,
1438 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1439 filename to parse into a directory pathname.
1440 * enhancement: implicit generic function creation now signals a
1441 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1442 users can bind handlers for and muffle around calls to LOAD.
1443 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1444 to be used (using the default stream external format), and allows
1445 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1446 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1447 strings and vectors whose element-type or simplicity is not fully
1448 known at compile-time.
1449 * optimization: STRING-TRIM and related functions no longer allocate
1450 a new string when no trimming needs to be performed. These functions
1451 are also faster than before when the input string has been declared
1453 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1454 * optimization: READ-LINE is significantly faster for files containing
1456 * optimization: non-open coded uses of character comparison operators
1457 (e.g. char=) no longer cons when called with more than one parameter
1458 on platforms supporting dynamic-extent allocation.
1459 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1460 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1461 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1463 * bug fix: some sequence functions elided bounds checking when
1465 * bug fix: too liberal weakening of union-type checks when SPEED >
1467 * bug fix: more bogus fixnum declarations in ROOM implementation
1470 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1471 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1472 :SYNCHRONIZED argument, which makes the hash-table safe for
1473 concurrent accesses (but not iteration.) See also:
1474 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1475 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1476 * optimization: CONCATENATE on strings is an order of magnitude faster
1477 in code compiled with (> SPEED SPACE).
1478 * optimization: SUBSEQ is ~50% faster on lists.
1479 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1480 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1481 END is smaller then START.
1482 * bug fix: SB-PROFILE will no longer report extra consing for nested
1483 calls to profiled functions.
1484 * bug fix: ROOM implementation had bogus fixnum declarations which
1485 could cause type-errors when calling ROOM on large images.
1486 * bug fix: if file compilation is aborted, the partial fasl is now
1487 deleted, and COMPILE-FILE returns NIL as the primary value.
1488 * bug fix: number of thread safety issues relating to SBCL's internal
1489 hash-table usage have been fixed.
1490 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1491 be returned from its body when the values were being returned
1492 using unknown-values return convection and the W-P-O was wrapped
1493 inside an UNWIND-PROTECT.
1494 * bug fix: sb-posix should now compile again under Windows, enabling
1495 slime to work again.
1497 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1498 * incompatible change: hash-table accessor functions are no longer
1499 automatically protected by locks. Concurrent accesses on the same hash-table
1500 from multiple threads can give inconsistent results or even corrupt the
1501 hash-table completely. Multi-threaded applications should do their own
1502 locking at the correct granularity. In the current implementation it is
1503 still safe to have multiple readers access the same table, but it's not
1504 guaranteed that this property will be maintained in future releases.
1505 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1506 and will signal an error at runtime.
1507 * enhancement: SB-THREAD package now exports a semaphore interface.
1508 * enhancement: CONS can now stack-allocate on x86 and
1509 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1511 * enhancement: nested lists can now be stack allocated on
1512 platforms providing stack allocation support.
1513 * enhancement: dynamic-extent support has been extended to support
1514 cases where there are multiple possible sources for the stack
1516 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1517 if the mutex is uncontested on Linux.
1518 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1519 as specified by the CLHS. (thanks to Tobias Rittweiler)
1520 * bug fix: NaN comparison now works on x86-64.
1521 * bug fix: CLOSE :ABORT T on a stream with pending output now
1523 * bug fix: instances of non-standard metaclasses using standard
1524 instance structure protocol sometimes missed the slot type checks
1526 * bug fix: known functions can be inlined in high-debug code.
1528 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1529 * minor incompatible change: the MSI installer on Windows no longer
1530 associates .lisp and .fasl files with the installed SBCL.
1531 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1532 on Windows. (thanks to Luis Oliviera)
1533 * new feature: SB-CLTL2 contrib module now implements
1534 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1535 * optimization: scavenging weak pointers is now more efficient,
1536 requiring O(1) instead of O(N) per weak pointer to identify
1537 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1538 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1539 method bodies using constant slot-names when the first argument is
1540 a specializer parameter for the method.
1541 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1542 names, when the class of the instance is a direct instance
1543 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1544 as slow as the constant slot-name case.)
1545 * optimization: member type construction is now O(N) instead
1547 * optimization: UNION and NUNION are now O(N+M) for large
1548 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1550 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1551 now more readable in environments like Slime which display it.
1552 (thanks to Tobias C. Rittweiler)
1553 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1554 was able to infer the correct argument type for the object on which
1555 the CAS operation was being performed.
1556 * bug fix: copy propagation interfered with parallel assignment
1557 semantics in local calls. (reported by Paul Khuong)
1558 * bug fix: the signed modular fixnum shift compiled to wrong code on
1559 x86 and x86-64. (spotted by a slight modification to some of
1562 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1563 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1564 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1565 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1567 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1568 and generic function now print the object identity for anonymous
1569 instances. (thanks to Attila Lendvai)
1570 * enhancement: as an extension to MOP, SBCL now supports SETF of
1571 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1572 (thanks to Attila Lendvai)
1573 * enhancement: sb-cover has an alternate annotation mode which puts
1574 the form annotations at the car of the form, instead of annotating
1575 it completely. The benefit of this mode is that it shows better
1576 which forms were instrumented by the compiler.
1577 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1578 by printer control variables. (reported by Dan Corkill)
1579 * bug fix: system leaked memory when delayed output was performed by
1580 the OS in smaller chunks then expected. (thanks to David Smith)
1581 * bug fix: system leaked memory when file streams were not closed
1583 * bug fix: large objects written to slow streams that were modified
1584 after the write could end up with the modified state written to
1585 the underlying file descriptor.
1586 * bug fix: multiple threads operating in parallel on the same stream
1587 could cause buffer-overflows.
1588 * bug fix: source location information is stored correctly
1589 (broken since 1.0.6). This bug would generally show up as the
1590 Slime debugger highlighting the wrong form when the sldb-show-source
1592 * bug fix: Branch forms are again annotated as branches in the sb-cover
1594 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1595 on x86-64. (reported by Gregory Vanuxem)
1596 * bug fix: EQUALP could return wrong results for structures with raw
1597 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1598 word). (reported by Vjacheslav Fyodorov)
1599 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1602 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1603 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1604 atomic compare-and-swap operations on threaded platforms.
1605 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1606 allows assigning a global minimum value to optimization qualities
1607 (overriding proclamations and declarations).
1608 * enhancement: closed over variables can be stack-allocated on x86
1610 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1612 * optimization: slot definition lookup is now O(1). This speeds up
1613 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1614 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1615 * optimization: ASSOC and MEMBER can now be open-coded for all
1616 combinations of keyword arguments when second argument is constant
1617 and SPEED >= SPACE. In other cases a specialized version is
1619 * bug fix: using obsoleted structure instances with TYPEP and
1620 generic functions now signals a sensible error.
1621 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1622 (reported by Kristoffer Kvello)
1623 * bug fix: backtrace construction is now more careful when making
1624 lisp-objects from pointers on the stack, to avoid creating bogus
1625 objects that can be seen by the GC.
1626 * bug fix: defaulting of values in contexts expecting more than 7
1627 variables now works on x86-64. (reported by Christopher Laux)
1628 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1630 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1631 as the property-list of a symbol.
1632 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1633 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1634 situations requested, are once again file-compileable. (reported
1637 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1638 * MOP improvement: support for user-defined subclasses of
1639 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1640 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1641 the expansion of DEFMETHOD, is responsible for generating a form
1642 which creates a list of specializers when evaluated. Additional
1643 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1644 debugging and introspective support.
1645 * minor incompatible change: the (unsupported) spinlock interface
1646 has changed: free spinlock now has the value NIL, and a held spinlock
1647 has the owning thread as its value.
1648 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1649 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1651 * enhancement: name of a socket-stream is now "a socket" instead of
1652 "a constant string".
1653 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1654 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1655 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1656 for generic functions. (Thanks to Tobias C. Rittweiler)
1657 * optimization: bignum printing speed has been improved by 20-40%
1658 (depending on the bignum size.)
1659 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1661 * bug fix: the cache used by the CLOS to store precomputed effective
1662 methods, slot offsets, and constant return values is now thread and
1664 * bug fix: generic function dispatch function updating is now thread
1665 and interrupt safe (in the sense that the known issues have been
1667 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1668 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1669 * bug fix: asdf systems with dependencies to the SB-POSIX or
1670 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1671 * bug fix: interrupt safety of applicable method computation has been
1674 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1675 * new contrib: sb-cover, an experimental code coverage tool, is included
1676 as a contrib module.
1677 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1678 significantly faster.
1679 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1680 produce more efficient code on x86-64 if the compiler can determine
1681 that (+ INDEX <constant>) does not require a bounds check and FOO
1682 has an element type at least 8 bits wide.
1683 * enhancement: a new, experimental synchronous timeout facility is
1684 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1685 * enhancement: when a symbol name conflict error arises, the
1686 conflicting symbols are always printed with a package prefix.
1687 (thanks to Kevin Reid)
1688 * enhancement: stepping is now once again supported on the SPARC and
1689 MIPS platforms. (It is also now more likely to work on CheneyGC
1691 * enhancement: sb-sprof can now also track and report accurate call
1693 * bug fixes: the treatment of non-standard subclasses of
1694 SB-MOP:SPECIALIZER is more correct.
1695 * incompatible change: PURIFY no longer copies the data from the
1696 dynamic space into the static and read-only spaces on platforms
1697 that use the generational garbage collector
1698 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1700 * bug fix: GC race condition occasionally resulting in crashes with
1701 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1703 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1705 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1706 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1707 * bug fix: an asynchronous interrupt could previously leave the
1708 system running with GC inhibited.
1709 * bug fix: a DECLARE form evaluated at top-level now causes an error
1710 rather than silently (or verbosely) returning NIL.
1711 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1712 result in a error being signalled due to source form lookup errors.
1713 (reported by Peter Graves)
1715 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1716 * incompatible change: removed writer methods for host-ent-name,
1717 host-ent-addresses -- changing the values did not update the DNS
1719 * minor incompatible change: changed experimental JOIN-THREAD interface
1720 * documentation: the manual now lists reader and writer methods
1721 in class slot documentation sections. (thanks to Richard M Kreuter)
1722 * documentation: unwinding from asyncronous events has been
1723 documented as unsafe.
1724 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1725 in multithreaded application code.
1726 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1727 platforms. (thanks to James Anderson for the optimization hint)
1728 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1730 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1731 variants no longer cons.
1732 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1733 their NOT- variants no longer cons.
1734 * optimization: EQUAL hash tables no longer use SXHASH for objects
1735 of all data types, but instead use an EQL hash for types for which
1736 EQUAL is the same as EQL.
1737 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1738 are significantly faster.
1739 * optimization: new STRING-OUTPUT-STREAM implementation is much
1740 faster for large outputs and conses 30% less on average.
1741 * enhancement: XREF information is now collected for references made
1742 to global variables using SYMBOL-VALUE and a constant argument.
1743 * enhancement: SIGINT now causes a specific condition
1744 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1745 * bug fix: FILE-POSITION used to signal an error in some cases where
1746 ANSI requires it to return NIL.
1747 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1748 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1749 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1751 * bug fix: bad type declaration in the CLOS implementation has
1752 been fixed. (reported by James Anderson)
1753 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1754 (thanks to Lutz Euler)
1755 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1756 required by the CLHS. (reported by Samium Gromoff)
1757 * bug fix: dead unbound variable references now signal an error.
1758 (reported by Marco Monteiro)
1759 * bug fix: / with an unused value was being deleted in safe code.
1760 (thanks to Marco Monteiro and Kevin Reid)
1761 * bug fix: number of characters that can be written onto a single
1762 line in a file is unlimited.
1763 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1764 been fixed by inhibiting interrupts for when GC is disabled.
1765 * bug fix: some interrupt safety issues with GETHASH, (SETF
1766 GETHASH), CLRHASH and REMHASH have been fixed.
1767 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1768 specifier no longer causes infinite recursion.
1769 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1770 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1771 * bug fix: an &environment argument with the correct variable information
1772 is passed to macros that are expanded during byte compilation.
1773 (reported by Samium Gromoff)
1774 * bug fix: a logic error was causing the hash function for bignums to
1775 have excessive amounts of collisions. (reported by Faré Rideau)
1776 * bug fix: modifying the contents of an array could change the return
1777 value of SXHASH on that array, which is only allowed for strings
1778 and bit vectors. (bug introduced in 0.9.16)
1779 * improvement: the x86-64/darwin port now passes all tests (except
1780 for the debugger tests) but should still be considered
1781 experimental until this is fixed.
1782 * improvement: a style-warning is signaled for CASE (etc) clauses with
1783 duplicate keys. (thanks to Kevin Reid)
1784 * improvement: macos/x86 and macos/x86-64 now use mach exception
1785 handlers for dealing with illegal instructions (for trapping and
1786 error handling) and memory protection violations (for GC).
1788 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1789 * new platform: experimental support for x86-64/darwin (MacOS).
1790 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1791 and getnameinfo sockets functions are used instead of gethostbyaddr
1792 and gethostbyname, on platforms where the newer functions are available.
1793 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1795 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1796 don't print the startup banner, but behave as if --noinform was passed
1797 as a command line argument. (thanks to Kevin Reid)
1798 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1799 * optimization: code using alien values with undeclared types is much faster.
1800 * optimization: the compiler is now able to open code SEARCH in more cases.
1801 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1802 * bug fix: using standardized COMMON-LISP special variables as loop
1803 variables no longer signals bogus package lock violations. (reported
1805 * bug fix: declaring local loop variables to be of a range-limited type
1806 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1807 (reported by Andras Simon)
1808 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1809 bugs remain on x86-64.)
1810 * bug fix: the #= and ## reader macros now interact reasonably with
1811 funcallable instances.
1812 * bug fix: type-checks for function arguments were compiled using the
1813 compiler policy settings of the wrong lexical environment (in 1.0.2
1815 * bug fix: SHADOW accepts characters as string designators, as required
1816 by the spec (thanks to Eric Marsden)
1817 * bug fix: fixed GC safety issues when foreign functions are called with
1818 non-base strings as arguments
1819 * bug fix: more consistent error output for fatal-compiler-warnings, like
1821 * bug fix: functions with proper names were showing up as NIL in
1822 backtraces (reported by Edi Weitz, regression in 1.0.2)
1824 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1825 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1826 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1827 produce more efficient code on the x86 if the compiler can determine
1828 that (+ INDEX <constant>) does not require a bounds check and FOO
1829 has an element type at least 8 bits wide.
1830 * bug fix: references to undefined variables are handled the same way
1831 in toplevel forms as in the normal compiler
1832 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1834 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1835 (thanks to Jon Buller)
1836 * improvement: faster compilation times for complex functions
1837 * improvement: added readlink support to SB-POSIX (thanks to Richard
1840 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1841 * improvement: experimental support for mach exception handling on
1842 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1844 * improvement: support for GBK external format.
1845 (thanks to Chun Tian (binghe))
1846 * improvement: the debugger now displays variables that have been closed
1847 over, in code compiled with (DEBUG 2) or higher
1848 * improvement: support for executable cores on NetBSD (thanks to
1850 * new feature: added a RESTART-FRAME debugger command
1851 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1852 be used to provide an implementation for FILE-POSITION on Gray streams
1853 (thanks to Eric Marsden)
1854 * new feature: add syslog, openlog and closelog support to SB-POSIX
1855 (thanks to Richard Kreuter)
1856 * optimization: the function call overhead in code compiled with
1857 a high DEBUG optimization setting is significantly
1858 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1859 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1860 (thanks to Tony Martinez)
1861 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1862 evaluated once (reported by Kevin Reid)
1863 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1864 works again (thanks to Kilian Sprotte)
1865 * bug fix: an error is signaled for tagbodies with duplicate tags
1866 (thanks to Stephen Wilson)
1867 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1868 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1869 stack frames from alien callbacks.
1870 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1871 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1872 65k pages (thanks to David Woodhouse)
1873 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1875 changes in sbcl-1.0.1 relative to sbcl-1.0:
1876 * new platform: FreeBSD/x86-64, including support for threading.
1877 * new feature: the compiler stores cross-referencing information
1878 about function calls (who-calls), macroexpansion (who-macroexpands)
1879 and special variables (who-binds, who-sets, who-references) for code
1880 compiled with (< SPACE 3). This information is available through the
1881 sb-introspect contrib.
1882 * new feature: users may subclass SEQUENCE, and have instances of
1883 these classes interoperate with standard Common Lisp functions if
1884 a number of methods are defined. (This feature is experimental
1885 and the interface subject to change based on feedback from SBCL
1886 users and the general community)
1887 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1888 x86/x86-64, rather than the previous fixed depth of 8
1889 * improvement: another pthread back-end of mutex "pthread-futex".
1890 * bug fix: non-ascii command-line arguments are processed correctly
1891 (thanks to Yaroslav Kavenchuk)
1892 * bug fix: non-required arguments were not passed correctly when a method
1893 defined using DEFMETHOD was called from a mop-generated method using
1894 CALL-NEXT-METHOD (reported by Pascal Costanza)
1895 * bug fix: recursion is now permitted in accessors through
1896 SLOT-UNBOUND. (reported by Pascal Costanza)
1897 * bug fix: an error was signaled at startup if the HOME environment
1898 variable was defined, but had an empty value (reported by Peter Van Eynde)
1899 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1900 signal a PROGRAM-ERROR, not a BUG.
1901 * bug fix: SB-POSIX:READDIR works when built with large file support.
1902 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1904 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1905 for better automatic indentation support. (thanks to Matt Pillsbury)
1906 * optimization: loading generic functions no longer takes O(n^2) time,
1907 proportional to the amount of methods in the generic function
1908 (reported by Todd Sabin and Jeremy Brown)
1909 * optimization: the FIND and POSITION family of sequence functions
1910 are significantly faster on arrays whose element types have been
1912 * improvements to the Windows port:
1913 ** Intermittent heap corruption problems have been fixed. (thanks
1914 to Alastair Bridgewater)
1915 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1917 ** Lisp is able to unwind foreign exception frames from alien
1918 callbacks. (thanks to Alastair Bridgewater)
1920 changes in sbcl-1.0 relative to sbcl-0.9.18:
1921 * improvement: experimental support for threading on FreeBSD/x86.
1922 (thanks to NIIMI Satoshi)
1923 * improvement: runtime option --dynamic-space-size can be used
1924 to set the size of the dynamic space reserved on startup.
1925 * improvement: floating point modes in effect are now saved in
1926 core, and restored on startup.
1927 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1928 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1929 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1930 threads are not running after *SAVE-HOOKS* have run.
1931 * improvement: writes to CLOS instance slots are type-checked in code
1932 compiled with (SAFETY 3)
1933 * improvement: floating-point exception handling on FreeBSD (thanks to
1935 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1936 (thanks to Zach Beane)
1937 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1939 * improvement: added support for the Shift-JIS external format.
1940 (contributed by NIIMI Satoshi)
1941 * improvement: callbacks are supported on Linux/PPC. (thanks to
1943 * bug fix: compiler bug triggered by a (non-standard) VALUES
1944 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1945 * bug fix: file compiler no longer confuses validated and already
1946 dumped structurres. (reported by Kaersten Poeck)
1947 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1948 fill-pointer signals a type-error as required. (thanks to
1950 * bug fix: disassemly of funcallable instances works.
1951 * bug fix: single stepping on PPC.
1952 * bug fix: fix thread-safety problems in the type system (generally
1953 manifesting as nonsensical errors like "STRING is a bad type specifier
1954 for sequences" or "The value 1 is not of type FIXNUM")
1955 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1956 (reported by Josip Gracin)
1957 * bug fix: an error is signaled for attempts to displace arrays with
1958 incompatible element types (thanks to Mario Mommer)
1959 * bug fix: more correct handling of wide characters in debug info
1960 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1961 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1962 and don't cause extra consing
1963 * optimization: MAP and MAP-INTO are significantly faster on vectors
1964 whose elements types have been declared.
1965 * Improvements to SB-SPROF:
1966 ** Support for allocation profiling
1967 ** Reduced profiling overhead, especially for long profiling runs
1968 * Improvements to the Windows port:
1969 ** floating point exceptions are now reported correctly.
1970 ** stack exhaustion detection works partially.
1971 ** more accurate GET-INTERNAL-REAL-TIME.
1972 ** better RUN-PROGRAM behaviour in case of errors in the child
1974 ** PROBE-FILE now simplifies pathnames correctly.
1975 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1976 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1977 1st 1970 (although time timezone data will be unreliable).
1978 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1980 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1981 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1982 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1984 * bug fix: two potential GC deadlocks affecting threaded builds.
1985 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1986 returns T (reported by Anton Kazennikov)
1987 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1988 with non-variable places
1989 * bug fix: remove a race condition in the setting of
1990 funcallable-instance functions, this should make threaded CLOS
1991 code more stable against memory faults.
1992 * bug fix: corruption of specials when unbinding is interrupted by an
1993 asynchronous unwind (reported by Hannu Koivisto)
1994 * improvement: the debugger will now also display local variables that
1995 are only used once, for code compiled with a DEBUG optimization quality
1998 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1999 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2000 * incompatible change: External-format support for FFI calls. The
2001 SB-ALIEN:C-STRING no longer implies an ASCII
2002 external-format. Instead the string is subject to external-format
2003 conversion. Additionally return values of type SB-ALIEN:C-STRING
2004 are by default of type (SIMPLE-ARRAY CHARACTER), not
2005 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2006 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2007 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2008 * incompatible change: SB-EXT package no longer contains the
2009 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2010 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2012 * incompatible change: the single-stepper is no longer available
2013 on Alpha, Mips and Sparc platforms.
2014 * minor incompatible change: the direct superclasses of
2015 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2016 not (STANDARD-OBJECT FUNCTION). This makes the
2017 class-precedence-lists of GENERIC-FUNCTION and
2018 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2020 * minor incompatible change: the default stream external format on
2021 non-unicode SBCL is no longer detected from the locale, but is always
2023 * new feature: Add a version of evaluator that uses an interpreter instead
2024 of the compiler. EVAL still uses the compiler by default, to switch it
2025 to use the interpreter, set the value of the variable
2026 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2027 * minor incompatible change: the single-stepper REPL has been merged
2028 with the normal debugger (see the "Stepping" heading of the debugger help
2029 for more details). The debugger command STEP will no longer switch
2030 to the single-stepper REPL.
2031 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2032 for a type now works.
2033 * bug fix: loading of default sysinit file works. (thanks to Leonid
2035 * bug fix: better detection of circularities in the file-compiler.
2036 (reported by Marco Monteiro)
2037 * bug fix: the CL pathname functions now work with files that have
2038 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2039 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2040 systems with Unix98 pty semantics.
2041 * bug fix: ASDF-INSTALL will now work with bsd tar.
2042 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2044 * bug fix: timers expiring in dead threads no longer cause a
2045 type-error (reported by Paul "Nonny Mouse").
2046 * bug fix: thanks to more lightweight single-stepper instrumentation,
2047 code compiled with (DEBUG 3) will compile and execute significantly faster,
2048 and will have more accurate type-inferencing than before
2049 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2050 whose bindings are modified
2051 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2052 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2053 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2054 CL:SOFTWARE-VERSION with proper version
2056 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2057 * feature: implemented the READER-METHOD-CLASS and
2058 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2059 as specified by AMOP.
2060 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2062 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2063 (thanks to Lutz Euler)
2064 * optimization: hashing of general arrays and vectors has been
2065 improved. (reported by Any Fingerhut)
2066 * enhancement: SB-INTROSPECT is now able to find definitions of
2067 profiled functions. (thanks to Troels Henriksen)
2068 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2069 as well, allowing compiler-macros for SETF-functions to expand.
2070 * enhancement: step-instrumentation no longer wraps known
2071 single-value functions with multiple-value context, allowing
2072 better type inference.
2073 * fixed bug #337: use of MAKE-METHOD in method combination now works
2074 even in the presence of user-defined method classes. (reported by
2075 Bruno Haible and Pascal Costanza)
2076 * fixed bug #339(c): if there are applicable methods not part of any
2077 long-form method-combination group, call INVALID-METHOD-ERROR.
2078 (reported by Bruno Haible)
2079 * fixed bug #361: the :FUNCTION initarg in the protocol for
2080 initialization of methods can now be used to override
2081 internally-produced optimized functions. (reported by Bruno
2083 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2084 system-provided lambda expression no longer cause warnings about
2085 unbound #:|pv-table| symbols.
2086 * bug fix: improved the handling of type declarations and the
2087 detection of violations for keyword arguments with non-constant
2089 * bug fix: potentially erronous calls to PATHNAME and
2090 MERGE-PATHNAMES were being flushed in some cases.
2091 (reported by Richard Kreuter)
2092 * bug fix: compiled calls to TYPEP were mishandling obsolete
2093 instances. (reported by James Bielman and Attila Lendvai)
2094 * bug fix: format strings with ~> without matching ~< no longer
2095 trigger an AVER, but signal an understandable error instead.
2096 (reported by Antonio Martinez)
2097 * bug fix: specifying an output-file without a pathname-type for
2098 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2099 of input-file instead of "fasl". (reported by Robert Dodier)
2100 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2101 (reported by James Y Knight).
2102 * bug fix: compiler-macros-function did not consider the environment
2103 argument for shadowing by local functions.
2104 * bug fix: compiler-macros expansion was inhibited by local INLINE
2106 * bug fix: inline expansions of known functions were subject to
2107 step-instrumentation in high debug policies, leading to problems
2108 with type-inference.
2109 * bug fix: compiler failed to differentiate between different CONS
2110 types in some cases.
2111 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2112 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2113 * bug fix: #368: incorrect use of expressed vs. upgraded array
2115 * bug fix: #306a: more precise unions of array types.
2116 * thread-safety improvements:
2117 ** CONDITION-WAIT could return early on Linux, if the thread was
2118 interrupted and subsequently continued with SIGCONT.
2119 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2121 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2122 * added support for the ucs-2 external format. (contributed by Ivan
2124 * minor incompatible change: pretty printing of objects of type
2125 (cons symbol) is, in the default pprint-dispatch-table, now
2126 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2128 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2129 called later in a class's lifetime, possibly as late as when the
2130 first instance of the class is created. Previously,
2131 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2132 class became finalizeable.
2133 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2134 for multibyte external-format streams. (thanks to "vbzoli")
2135 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2136 with :ALLOCATION :CLASS inherited from superclasses of the
2138 * fixed bug: anonymous classes can now be created using the :NAME
2139 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2140 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2141 * fixed bug: core-files saved with :EXECUTABLE T can again be
2142 executed when SBCL_HOME isn't set. (reported by James Knight)
2143 * fixed bug: toplevel LOCALLY forms with declarations could
2144 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2145 * fixed bug: printing from several different threads using different
2146 values of *print-case* could cause invalid output, due to
2147 some internal special variables of the printer not being bound
2148 thread-locally (reported by Max Mikhanosha)
2149 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2150 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2151 (reported by Pascal Costanza)
2152 * fixed bug: FINALIZE-INHERITANCE is called from
2153 REINITIALIZE-INSTANCE on classes when the class has previously
2154 been finalized, as required by AMOP.
2155 * minor code generation optimizations:
2156 ** better register allocation in CLOS dispatching functions
2157 ** overflow detection when coercing signed bytes to fixnums on x86-64
2158 ** is now implemented with one IMUL instruction instead of three shifts
2159 ** more efficient bit-vector access on x86 and x86-64
2160 ** more efficient access to raw structure slots on x86 and x86-64
2161 * fixed some bugs revealed by Paul Dietz' test suite:
2162 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2163 return its argument.
2165 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2166 * feature: thread support on Solaris/x86, and experimental thread support
2168 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2170 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2171 default method for SLOT-UNBOUND.
2172 * minor incompatible change: prevent the user from specializing the
2173 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2174 somewhat counter to the intent of the protocol, I (CSR) think, and
2175 additionally it just doesn't work in SBCL as currently
2176 implemented, thanks to optimizations (that are always valid for
2177 the other three SLOT-VALUEish functions, but not for the setter).
2178 * minor incompatible change: the :SB-LDB feature is now enabled by
2179 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2180 the low-level debugger.
2181 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2182 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2183 down to an SB-SYS:FD-STREAM, allowing direct communication in
2184 more cases. Temporary files and pipes are still used as a fallback
2186 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2187 on the non-reentrant C functions localtime(3) and gmtime(3).
2188 * bug fix: global optimization policy was not visible in LOCALLY and
2190 * bug fix: class objects can be used as specializers in methods.
2191 (reported by Pascal Costanza)
2192 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2193 with a type error. (reported by blitz_ on #lisp)
2194 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2195 failed with a type error. (reported by Pascal Bourguignon)
2196 * bug fix: merging pathnames against defaults with :DIRECTORY
2197 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2198 (reported by James Y Knight)
2199 * bug fix: saving large (>2GB) cores on x86-64 now works
2200 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2201 constant index and a (simple-array (signed-byte 32)) array
2202 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2203 error (patch by Robert J. Macomber)
2204 * feature: TIME now displays the amount of run-time spent in GC
2205 * bug fix: The debugger now does a better job of respecting
2206 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2207 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2208 workaround for bug 403.)
2209 * bug fix: floating point exception handling now works on FreeBSD
2210 (thanks to NIIMI Satoshi)
2211 * fixed some bugs revealed by Paul Dietz' test suite:
2212 ** MISC.641: LET-conversion were not supposed to work in late
2214 * improvements to the Win32/x86 port:
2215 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2216 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2218 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2219 * new feature: source path information is generated for macro-expansion
2220 errors for use in IDE's like Slime (thanks to Helmut Eller)
2221 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2222 * bug fix: compiler does not loop forever on an invalid type in
2224 * improvement: compilation of most CLOS applications is significantly
2226 * optimization: added a limited bytecode compiler for simple toplevel
2227 forms, speeding up compilation and FASL loading
2228 * bug fix: the statistical profiler now properly distinguishes anonymous
2231 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2232 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2233 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2234 into subclasses of the finalized class. Now user calls to
2235 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2236 system return before any subclasses are finalized.
2237 * minor incompatible change: The reader no longer ignores errors
2238 regarding non-existent packages in #+ and #- feature tests.
2239 * new feature: command line options --no-sysinit, --no-userinit to
2240 inhibit loading the corresponding init files
2241 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2242 for sending data through UDP sockets (thanks to François-René Rideau)
2243 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2244 error is signalled instead (thanks to François-René Rideau)
2245 * minor incompatible change: Error signalling behaviour of lexical
2246 operations violating package locks has changed slightly. Refer to
2247 documentation on package locks for details.
2248 * enhancement: EVAL can process IF-expressions without resorting to the
2250 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2251 constant-folded properly due to missing out-of-line functions.
2252 (reported by Mika Pihlajamäki)
2253 * bug fix: LISTEN sometimes returned T even in cases where no data was
2254 immediately available from the stream
2255 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2256 were reversed. (reported by Levente Mészáros)
2257 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2258 when given a vector displaced to an adjustable array. (reported
2260 * bug fix: derivation of float boundaries from numbers outside the
2261 appropriate float range (reported by John Wiseman)
2262 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2264 * bug fix: precomputing cache entries for generic functions with
2265 some subclasses of specializers as yet invalid does not attempt to
2266 fill a cache line with a negative offset. (reported by Levente
2268 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2269 allow condition class objects as arguments to DOCUMENTATION and
2270 (SETF DOCUMENTATION); only find and set documentation for
2271 structure names for the STRUCTURE doc-type. (suggested by Gary
2273 * improvements to the Win32/x86 port:
2274 ** (user-homedir-pathname) and default initialization file
2275 locations now know about the user's "Documents and Settings"
2276 directory (thanks to Yaroslav Kavenchuk)
2277 ** run-program is implemented (thanks to Mike Thomas)
2278 ** sockets support (thanks to Timothy Ritchey)
2279 ** better backtrace support (thanks to Alastair Bridgewater)
2280 ** sb-grovel supported
2281 ** asdf-install and sb-posix work somewhat
2282 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2283 * improvements to the Solaris/x86 port:
2284 ** works on Solaris 11/Solaris Express
2285 ** floating-point exception handling support
2286 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2287 * fixed some bugs revealed by Paul Dietz' test suite:
2288 ** REMOVE-METHOD returns its generic function argument even when
2289 the method is not one of the generic functions' methods.
2290 ** objects declared as MEMBER types can be admissible arguments to
2291 structure accessors.
2292 ** printing characters should simply be printed by the FORMAT ~:C
2294 ** compiler failure when compiling functions with hairy constant
2295 defaults for optional parameters.
2296 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2297 function, which is already optimized.
2299 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2300 * new platform: experimental support for SBCL x86/Darwin, including
2301 MacOS X 10.4.5 on Intel.
2302 * new feature: Unicode character names are now known to the system
2303 (through CHAR-NAME and NAME-CHAR).
2304 * new feature: the filesystem location of SBCL's core file is
2305 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2306 * minor incompatible change: the contrib modules SB-POSIX and
2307 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2308 this change is to make it easier to distribute
2309 location-independent binaries.
2310 * bug fix: as implied by AMOP, standardized classes no longer have
2311 slots named by external symbols of public packages. (reported by
2313 * optimization: calling functions via constant symbols -- as in
2314 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2315 via the function object as in (FUNCALL #'FOO).
2316 * optimization: on x86 and x86-64, the calling convention for the
2317 case of dealing with an unknown number of values has been altered
2318 to be friendlier to the prediction heuristics implemented,
2319 particularly with reference to CALL and RET pairing. (thanks to
2320 Alastair Bridgewater)
2321 * optimization: on x86, the code for access to thread-local symbol
2322 values and binding/unbinding of thread-local symbols is smaller.
2323 (thanks to Alastair Bridgewater)
2324 * enhancement: CONSTANTP is now able to determine constantness of
2325 more complex forms, including calls to constant-foldable standardized
2326 functions and some special forms beyond QUOTE.
2327 * fixed bug: occasional GC crashes on Solaris/x86
2328 * optimization: x86-64 supports stack allocation of results of simple
2329 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2330 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2331 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2332 (thanks to James Knight)
2333 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2334 by the standard (thanks to Stephen Compall)
2336 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2337 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2338 be used for bundling the runtime and the core file into one
2339 executable binary. This feature is not currently supported on all SBCL
2340 platforms. (thanks to James Bielman and NIIMI Satoshi)
2341 * new feature: a generational or ephemeral garbage collector is now
2342 the default on the PowerPC platform (both Linux and Darwin). The
2343 old Cheney (stop and copy) collector is a build-time option.
2344 (thanks to Cyrus Harmon, after Raymond Toy)
2345 * minor incompatible change: the method by which SBCL finds its
2346 contributed modules has changed; it no longer relies on symbolic
2347 links from an $SBCL_HOME/systems directory, but searches directly
2348 in the subdirectories of $SBCL_HOME.
2349 * enhancement: the dynamic heap size on the Linux/PPC platform is
2350 markedly larger, even using the older Cheney garbage collector.
2351 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2352 certain complicated string types. (reported by Gary King)
2353 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2354 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2355 * fixed bug: DOCUMENTATION on structures no longer signals an
2356 error if no structure type of the right name exists. (reported by
2358 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2359 applicable non-standard primary or :AROUND method on
2360 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2361 no longer cause unbound variable errors. (reported by Kevin Reid)
2362 * fixed bug: metacircle resolution in cases where methods have slots
2363 added before the slots from STANDARD-METHOD. (reported by Jean
2365 * fixed bug: the Power PC assembly code for calling into lisp
2366 sometimes computed its return address wrongly (depending on the
2367 15th bit of the address, fixed at link time). This used to
2368 manifest itself in a segmentation violation while building PCL.
2369 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2370 many others over the years)
2371 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2372 the stack pointer (treated as a signed integer) is negative.
2373 (thanks to Peter van Eynde)
2375 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2376 * new platform: experimental support for the Windows operating
2377 system has been added. (thanks to Alastair Bridgewater)
2378 * fixed several bugs in and robustified the PPC FFI (including
2379 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2380 * bug fix: allow non-simple string symbol names (reported by Paul
2382 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2384 * bug fix: saving a core corrupted callbacks on x86/x86-64
2385 * bug fix: closed a loophole in metacircularity detection and
2386 grounding in the PCL implementation of CLOS.
2387 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2388 (reported by tomppa on #lisp)
2389 * bug fix: clear the direction flag on Lisp -> C transitions, as
2390 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2391 (reported by Andrej Grozin and Hendrik Maryns)
2392 * optimization: major improvements to GC efficiency on GENCGC platforms
2393 * optimization: faster implementation of EQUAL
2394 * optimization: emit more efficient opcodes for some common
2395 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2396 * optimization: several other minor code-generation improvements on x86-64
2397 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2399 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2400 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2401 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2402 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2403 by ANSI as a generic function, and for consistency (SETF
2404 GENERIC-FUNCTION-NAME) is treated likewise.
2405 * fixed bug #233.b: make constraint propagation notice when a variable
2406 value is changed after it is referenced but before it is used
2407 * fixed bug #296: no more arbitrary behaviour from filenames with
2408 odd characters as --load arguments. (reported by Adam Warner)
2409 * fixed bug #390: :CHARACTER-SET pathname components now work as
2410 expected. (reported by Tim Daly Jr)
2411 * fixed bug #391: complicated :TYPE intersections in slot
2412 definitions no longer cause an error in PCL internals.
2413 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2414 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2415 returning the number of octets which would be written to the
2416 file-stream. (thanks to Robert J. Macomber)
2417 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2418 arguments to the internal stream functions. (thanks to David
2420 * bug fix: stack exhaustion is now handled on the x86/SunOS
2421 platform. (thanks to Daisuke Homma)
2422 * bug fix: more accurate ROOM results on GENCGC platforms
2423 * optimization: improved type inference for arithmetic-for
2424 index variables in LOOP
2425 * optimization: faster floating-point SQRT on x86-64
2426 * fixed some bugs revealed by Paul Dietz' test suite:
2427 ** DOCUMENTATION returns NIL instead of "" for method combinations
2428 that don't have a docstring
2430 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2431 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2432 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2433 therefore are not customizeable by user code (as seems to be at
2434 least permitted and maybe required by AMOP). As a consolation,
2435 however, the SBCL implementation of these functions now calls
2436 REINITIALIZE-INSTANCE as specified by AMOP.
2437 * bug fix: slot-definition documentation is propagated as per ANSI
2438 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2439 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2440 argument, as do eslotd initialization methods. (from Pascal
2441 Costanza's "Closer" project)
2442 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2443 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2445 * bug fix: it is now possible to have more than one subclass of
2446 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2447 (reported by Bruno Haible, Pascal Costanza and others)
2448 * bug fix: the dependent update protocol now works for generic
2449 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2450 and Pascal Costanza)
2451 * bug fix: condition-class instances corresponding to
2452 DEFINE-CONDITION forms are now created eagerly. (reported by
2453 Kalle Olavi Niemitalo on comp.lang.lisp)
2454 * bug fix: floating point printing is more accurate in some
2455 circumstances. (thanks to Simon Alexander)
2456 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2457 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2458 * bug fix: callbacks on OS X now preserve stack-alignment.
2459 (thanks to Cyrus Harmon)
2460 * enhancement: the x86-64 disassembler is much better at
2461 disassembling SSE instructions. (thanks to Lutz Euler)
2462 * enhancement: CHECK-TYPE on a variable now allows type-inference
2463 (thanks to Vincent Arkesteijn)
2464 * optimization: improved performance of EUC-JP external format.
2465 (thanks to NIIMI Satoshi)
2466 * optimization: performance improvements to IO on file streams of
2467 :ELEMENT-TYPE CHARACTER
2468 * optimization: much faster memory allocation on x86-64
2469 * optimization: faster garbage collections (latency and throughput)
2471 * optimization: faster bignum subtraction and division on x86 and x86-64
2472 (thanks to Lutz Euler)
2473 * optimization: more accurate type-inference for loops that use a
2474 floating point index variable or a negative step.
2476 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2477 * bug fix: add a workaround to SBCL looping infinitely at startup on
2478 Linux kernels with apparently buggy implementations of personality().
2479 (thanks to Svein Ove Aas)
2480 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2481 (thanks to David Lichteblau)
2482 * bug fix: local bindings shadow global symbol macros for
2483 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2484 * optimization: non-open coded uses of numeric comparison operators
2485 (e.g. >) no longer cons when called with more than one parameter
2486 on platforms supporting dynamic-extent allocation.
2487 * enhancement: saving cores with foreign code loaded is now supported
2488 on MIPS/Linux in addition to the previously supported platforms.
2489 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2490 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2491 * bug fix: division by zero in sb-sprof when no samples were collected
2492 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2493 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2494 (thanks to Alexander Kjeldaas)
2495 * new feature: ignoring the return values of destructive functions
2496 like NREVERSE signals a compile-time style-warning.
2497 (thanks to Kevin Reid)
2498 * new feature: the alignment of alien structure fields can be
2499 explicitly specified. (thanks to Cyrus Harmon)
2500 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2501 and dump core on SIGQUIT
2503 ** incompatible change: threads do not inherit values of specials
2504 from their parents (see manual)
2505 ** bug fix: threads stacks belonging to dead threads are freed by the
2506 next exiting thread, no need to gc to collect thread stacks anymore
2507 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2508 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2509 ** bug fix: dynamic variable and thread start related gc lossage
2510 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2512 * fixed some bugs revealed by Paul Dietz' test suite:
2513 ** SUBTYPEP is slightly more accurate on heinously complicated
2514 CONS types where some of the members have uncertain (in the
2515 NIL, NIL sense) type relationships to each other.
2517 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2518 no longer purified unless :PURIFY T is explicitly specified.
2519 ** Non-purified cores are significantly smaller than before
2521 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2522 * new feature: timers based on Zach Beane's excellent timer package
2523 * added support for the following external formats: koi8-u,
2524 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2525 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2526 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2527 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2528 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2529 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2530 * incompatible change: a threaded SBCL will no longer revert to
2531 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2532 * bug fix: interrupts are disabled until startup is complete; no
2533 more sigsegvs when receiving a signal to soon
2534 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2536 * bug fix: add a workaround for the memory randomization features in
2537 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2538 workaround will only be in effect on systems with the proc filesystem
2540 * bug fix: printing objects of type HASH-TABLE signals a
2541 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2543 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2544 have been running for over 50 days. (reported by Gilbert Baumann)
2545 * bug fix: the logic for getting names of functions gets less
2546 confused when confronded with alternate-metaclass
2547 funcallable-instances. (reported by Cyrus Harmon)
2548 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2549 consistent, even on internal alternate-metaclass objects.
2550 * bug fix: flush closure information collected by physical
2551 environment analysis prepass before the main pass. (bug reported
2553 * bug fix: compiler pack phase does not modify a hashtable, which is
2554 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2555 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2556 may be expanded. (reported by Alexander <malishev> on c.l.l)
2557 * bug fix: no more style-warnings when compiling code using LAST
2558 under high-SPEED low-SPACE settings. (reported by David Wallin
2560 * fixed some incompatibilities between SBCL's MOP and the MOP
2562 ** the METAOBJECT class is now implemented;
2563 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2564 STANDARD-OBJECT, as required;
2565 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2566 now compatible (as required by VALIDATE-SUPERCLASS); there
2567 remains a consistency requirement over the presence or absence
2568 of the FUNCTION class in the superclass list of finalized
2569 classes; see the manual for more details;
2570 ** the :AROUND method for COMPUTE-SLOTS on
2571 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2572 requested slot ordering.
2574 ** bug fix: parent thread now can be gc'ed even with a live
2576 ** bug fix: binding a special with PROGV to no value is not
2577 the same as that symbol not having been bound (thanks to
2579 ** bug fix: binding specials is thread safe (thanks to
2581 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2582 and SB-SPROF do not die with 'no handler for signal XX in
2583 interrupt_handle_now(..)' anymore
2584 ** bug fix: WITH-TIMEOUT works with multiple running threads
2585 * fixed some bugs revealed by Paul Dietz' test suite:
2586 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2587 the :method-class keyword argument.
2589 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2590 * new port: the Solaris operating system on x86 processors is now
2591 mostly supported, though some rough edges in the environment
2592 remain. (thanks to Daisuke Homma)
2593 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2594 space for its heap. (thanks to Thiemo Seufer)
2595 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2596 closures. (thanks to Thiemo Seufer)
2597 * minor incompatible change: eof selects abort in the debugger.
2598 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2599 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2601 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2602 deprecated, and will go away in a future revision of SBCL.
2603 * minor incompatible change: GC-ON and GC-OFF are no longer
2604 implemented with a counter, it does not matter how many times gc
2605 is switched on or off
2606 * bug fix: discriminating functions for generic function classes
2607 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2608 make invalid assumptions about method precedence order. (reported
2610 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2611 platforms. (thanks to Thiemo Seufer)
2612 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2613 * bug fix: correct pathname printing with printer escaping is on.
2614 (thanks to Kevin Reid)
2615 * bug fix: complex VOP definitions in "user-space" no longer trigger
2616 package locks. (reported by Zach Beane)
2617 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2618 for funcallable-instance functions, and is no different from
2620 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2621 characters in the current readtable. (reported by Nicholas Neuss)
2622 * bug fix: SUBTYPEP on various CONS types returns more a more
2623 accurate acknowledgment of its certainty.
2624 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2625 lists in some cases. This partially fixes bug 384.
2626 * flush all standard streams before prompting in the REPL and the
2628 * bug fix: signal handling and triggering gc do not conflict
2629 directly anymore, in particular a high frequency sb-sprof does
2630 not prevent gc from running
2631 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2632 approximation for timezone and DST information between the
2633 universal time epoch and the smallest negative 32-bit time_t.
2634 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2635 year 1899 so long as the encoded time is non-negative.
2636 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2637 the correct answer for non-constant rotate amounts when performing
2638 an inline 32-bit rotation.
2640 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2641 there is only one thread in the session
2642 ** bug fix: memory leak for streams created in one thread and
2643 written to in another
2644 ** bug fix: lockup when compiled with gcc4
2645 ** bug fix: race that allows the gc to be triggered when gc is
2647 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2648 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2650 ** bug fix: finished threads are gc'ed properly
2651 * fixed some bugs revealed by Paul Dietz' test suite:
2652 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2653 has arguments with a different set of applicable methods from
2654 the orignal arguments.
2655 ** The type error thrown by MAP now has a correct expected-type
2657 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2658 name a compiled function.
2659 ** Three MISC tests where a large bignum was improperly coerced to
2660 a float that couldn't represent that bignum during type
2661 derivation were fixed.
2662 ** SUBTYPEP can now handle types involving the negation of a
2663 list-form FUNCTION type.
2664 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2665 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2666 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2668 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2669 * New feature: Experimental support for bivalent streams: streams
2670 opened with :element-type :default now allow character and binary
2671 (unsigned-byte 8) I/O
2672 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2673 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2675 * bug fix: no more highly sporadic "couldn't check whether ~S is
2676 readable" when reading a stream and an interrupt hits in the middle
2677 of a select system call
2678 * compiler better recognizes complex arrays (reported by Eduardo
2680 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2681 for variables on SBCL built with linkage-tables. (reported by Luis
2683 * various error reporting improvements.
2684 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2685 (Thanks to Thiemo Seufer)
2686 * bug fix: nested reader invokations work correctly
2687 * bug fix: it is possible to have simultaneous references to foreign
2688 code and foreign data with the same name.
2690 ** added x86-64 support
2691 ** incompatible change: the threading api now works with thread
2692 objects instead of thread ids
2693 ** bug fix: threads are protected from signals and interruption when
2694 starting up or going down
2695 ** bug fix: a race where an exiting thread could lose its stack to gc
2696 ** bug fix: don't halt on infinite error in threads if possible
2697 ** fixed numerous gc deadlocks introduced in the pthread merge
2698 ** bug fix: fixed thread safety issues in read and print
2699 ** bug fix: debugger doesn't hang on session lock if interrupted at
2700 an inappropriate moment
2701 ** bug fix: run-program is now thread safe(r)
2702 ** bug fix: inner with-recursive-lock no longer releases the mutex
2703 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2704 * fixed some bugs revealed by Paul Dietz' test suite:
2705 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2706 EXPECTED-TYPE slots filled.
2707 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2709 ** MAKE-CONDITION accepts classes as type-designators.
2710 ** COMPILE may never return NIL.
2711 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2712 range before calling Unix time functions
2714 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2715 * numerous signal handling fixes to increase stability
2716 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2717 * minor incompatible change: we now correctly canonize default
2718 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2719 as per the MOP, rather than the historical (INITARG INITFUNCTION
2720 INITFORM). (reported by Bruno Haible)
2721 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2722 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2723 for more information.
2724 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2725 pathname is a directory pathname.
2726 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2727 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2729 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2730 :METACLASS argument in addition to a class name. (reported by
2731 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2732 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2733 (reported by Bruno Haible; patch from Gerd Moellmann)
2734 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2736 * bug fix: more cleanups to the floating point exception handling on
2737 x86-64 (thanks to James Knight)
2738 * bug fix: the compiler does not try to constant fold calls of
2739 COERCE and BIT-* functions when they return freshly constructed
2740 objects. (reported by Nikodemus Siivola and Paul Dietz)
2741 * optimization: improved the MIPS versions of generic (in the
2742 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2743 * optimization: direct conversion of (unsigned-byte 32) to floats on
2744 the PowerPC platform.
2745 * optimization: structure instances with raw slots now use less
2746 memory, and probably show better memory locality. (thanks to
2748 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2749 are treated as requests for stack allocation on the x86-64,
2750 Alpha-32, PPC and SPARC platforms.
2751 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2752 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2753 (thanks to Tony Martinez)
2755 ** gcing a dead thread can no longer lead to lockups
2756 ** threads block signals until they are set up properly
2757 ** errno is no longer shared by threads
2758 ** interrupt-thread restores the eflags register on x86
2759 ** fixed some lockups due to gc/thread interaction
2760 * fixed some bugs revealed by Paul Dietz' test suite:
2761 ** invalid dotted lists no longer raise a read error when
2762 *READ-SUPPRESS* is T
2763 ** signal an error if a symbol that names a declaration is used
2764 as the name of a type, or vice versa
2765 ** allow using the (declare (typespec var*)) abbreviation for
2766 (declare (type typespec var*)) with all type specifiers
2767 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2768 ** always return NIL from PPRINT-POP when OBJECT is NIL
2769 ** don't signal errors when pretty-printing malformed LABELS,
2770 FLET or MACROLET forms
2771 ** declarations in a DOLIST body are also in scope for the
2773 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2775 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2778 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2779 * fixed cross-compiler leakages that prevented building a 32-bit
2780 target with a 64-bit host compiler.
2781 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2782 opened with :IF-EXISTS :OVERWRITE.
2783 * fixed bug 281: error for an invalid qualifier in a short-form method
2784 combination method is not signalled until the faulty method is called.
2785 * bug fix: iteration variable type inferrer failed to deal with open
2786 intervals. (reported by Alan Shields)
2787 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2788 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2789 or more runtime options were provided to the sbcl binary.
2790 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2791 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2792 * optimization: there's now a fast-path for fixnum arguments in the
2793 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2794 * optimization: the code generated on x86-64 is more compact thanks
2795 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2796 * bug fix: floating-point exception handling now partly works on
2797 x86-64. (Thanks to James Knight)
2798 * improvement to the MIPS backend from Thiemo Seufer: C-style
2799 64-bit long long arguments and return values to alien functions
2801 * fixed some bugs revealed by Paul Dietz' test suite:
2802 ** the type-error signalled from WARN has a filled-in DATUM slot.
2803 ** the type-error required when a stream is not associated with
2804 a file has the stream as its datum.
2805 ** type-errors on single-floats on x86-64 no longer have
2806 :INVALID-OBJECT as the datum
2807 ** the type-errors signalled for invalid function names now have
2808 a correct expected type
2809 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2810 for structures defined with a :TYPE. Documentation strings for
2811 typed structures are no longer immediately discarded
2812 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2813 broadcast streams and synonym streams. FILE-LENGTH now also works
2814 on broadcast streams.
2816 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2817 * incompatible change: the --noprogrammer option, deprecated since
2818 version 0.7.5, has been removed. Please use the equivalent
2819 --disable-debugger option instead.
2820 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2822 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2823 inoperational for a while now) has been completely removed.
2824 * null lexical environments are now printed as #<NULL-LEXENV>,
2825 significantly reducing the amount of clutter in typical backtraces.
2826 * documentation on weak pointers, finalization, and after GC hooks
2827 has been added to the manual.
2828 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2829 as other specialized array types, is much faster. SUBSEQ and
2830 COPY-SEQ on such arrays have also been sped up.
2831 * optimization: EQL is now more efficient when at least other argument
2832 is known to be of type (OR FIXNUM (NOT NUMBER)).
2833 * fixed bug: the runtime is now less vulnerable to changes in the
2834 size of the SBCL object on OS X, and virtual memory is reserved for
2835 all spaces that need to be at a fixed address.
2836 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2837 * fixed bug: finalizers and after GC hooks that cause consing are now
2839 * fixed bug: compiler error messages and summaries are now printed to
2840 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2841 * fixed inference of the upper bound of an iteration variable.
2842 (reported by Rajat Datta).
2843 * fixed bug 211e: calling local functions with duplicated constant
2844 keyword argument no longer causes a bogus style warning about an
2846 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2847 ftype declaration to be disregarded. (reported by Dave Roberts)
2848 * fixed bug 373: caused by erronous compilation of references to alien
2849 variables in the runtime on ppc/darwin.
2850 * fixed bug 376: CONJUGATE type deriver.
2851 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2852 (reported by Baughn on #lisp)
2853 * a cross-compiler bug on non-x86 platforms has been identified and
2854 fixed. (thanks to Bruno Haible)
2855 * improvements to the MIPS runtime code for increased stability.
2856 (thanks to Thiemo Seufer)
2857 * increased the maximimum compact environment size to allow
2858 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2859 * partial workaround for bug 135: don't name the function we're
2860 calling for hairy cases of EVAL, so as not to accumulate one environment
2861 entry per call to EVAL. (reported by Kevin Reid)
2862 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2863 * optimization: type testing for non-vector arrays should be faster.
2864 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2866 * bug fix: setting 31st element of a bit vector to zero did not work
2868 * bug fix: redefining a class definition which failed due to a
2869 previous accessor / function clash now works (but see BUGS entry
2870 #380 for more problems in this area). (thanks to Zach Beane)
2871 * the long form of DEFINE-METHOD-COMBINATION disables method group
2872 checking when given a single method group with pattern *. (thanks
2874 * on x86 compiler supports stack allocation of results of simple
2875 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2876 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2877 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2878 * fixed some bugs related to Unicode integration:
2879 ** the restarts for recovering from input and output encoding
2880 errors only appear when there is in fact such an error to
2882 * fixed some bugs revealed by Paul Dietz' test suite:
2883 ** MISC.549 and similar: late transformation of unsafe type
2884 assertions into derived types caused unexpected code
2886 ** SCALE-FLOAT type deriver is less wrong.
2887 ** type derivers for EXP, LOG and similar functions compute result
2888 types for complex arguments better.
2889 ** (MISC.563) CONJUGATE type deriver works for very restricted
2891 ** out-of-line type testers for character strings are available.
2892 ** EQUAL compiler transform understands specialness of objects
2894 ** accessing double-floats stored on the stack now works on x86-64.
2895 ** debugger internals could sometimes create invalid lispobjs,
2896 resulting in GC crashes.
2897 ** MISC.548: type check weakening can convert required type into
2899 ** initialization forms for bindings are not in scope of free special
2902 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2903 * incompatible change: thread support for non-NPTL systems has
2904 been removed - locking is buggy and unreliable. A threaded
2905 SBCL build will now warn at startup and refuse to create
2906 new threads, unless futex support is detected in the kernel
2907 * incompatible change: the top level REPL now has only an ABORT
2908 restart associated with it, not TOPLEVEL and ABORT as it used to.
2909 TOP and TOPLEVEL are now available as debugger commands for
2910 returning to the top level.
2911 * incompatible change: forms evaluated in the REPL now use the
2912 global optimization policy.
2913 * incompatible change: user- and system-initialization files are
2914 no longer processed with LOAD, but by READ and EVAL; hence the
2915 global optimization policy, startup package, readtable, etc,
2917 * The .fasl file format number has been incremented because of
2918 various incompatible changes.
2919 * internal entry point details and argument counts no longer appear
2920 in backtraces unless explicitly requested by setting
2921 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2922 * built-in and standard functions no longer have names like "top
2923 level local call to FOO".
2924 * fixed bug 32: functions defined in non-null lexical environments
2925 now have more legible printed representation
2926 * fixed bug 33: functions defined in non-null lexical environemnts
2927 are now more amenable to inspection by INSPECT.
2928 * workaround for bug 354: XEPs no longer appear in backtraces unless
2929 explicitly requested.
2930 * fixed bug: receiving the signal which results from attempting to
2931 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2932 SIGBUS on other *BSDs) on architectures where the C stack is also
2933 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2934 to debugger confusion or wild instability. (reported by Cheuksan
2936 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2937 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2938 (reported by Lutz Euler)
2939 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2940 compiled code. (reported by Paul Dietz)
2941 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2942 specialized parameter to a method to something that is not TYPEP
2943 the specializer is now possible.
2944 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2945 face of package deletion.
2946 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2947 pathname. (reported by David Tolpin on c.l.l)
2948 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2949 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2950 STRING-STREAM and FILE-STREAM, respectively.
2951 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2952 than previously; in addition, its test suite is now run on build.
2953 (thanks to Luke Gorrie)
2954 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2955 * optimization: added a immediate representation for single-floats
2957 * fixed some bugs revealed by Paul Dietz' test suite:
2958 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2959 ** attempting to create a package with a colliding nickname causes
2960 correctable errors to be signalled.
2961 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2962 ** several x86-64 backend bugs related to sign-extension of immediate
2965 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2966 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2967 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2969 * fixed loading of multiply forward-referenced layouts.
2970 (thanks to Cheuksan Wang)
2971 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2972 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2973 (see COMPILE-FILE documentation for details of :PRINT option)
2974 * fixed bugs 19 and 317: fixed-format floating point printing is
2975 more accurate. This also fixes a bug reported by Adam Warner
2976 related to the ~@F format directive.
2977 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2979 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2980 dispatch table if the from-char is a dispatch macro character.
2981 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2982 by the wordsize no longer ignore the last word. (reported by Lutz
2984 * fixed bug in type checking of dynamic-extent variables. (reported
2986 * optimization: sequence traversal functions use their freedom to
2987 coerce function designators to functions.
2988 * optimization: code with many calls to CLOS methods specialized on
2989 CLOS classes has had redundant type checks removed.
2990 * optimization: added declarations to speed up operations that access
2991 the internal character database (for example STRING-UPCASE)
2992 * optimization: comparison operations between floats and sufficiently small
2993 fixnums no longer create extra rationals
2994 * fixed some bugs related to Unicode integration:
2995 ** portions of multibyte characters at the end of buffers for
2996 character-based file input are correctly transferred to the
2997 start of the buffer at the next read.
2998 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2999 passing it through to OPEN.
3000 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3001 argument given to internal calls to OPEN.
3002 ** the built-in comment readers (introduced by character sequences
3003 ";" and "#|") are more forgiving to encoding errors; they will
3004 STYLE-WARN and then attempt to resync the stream at a character
3005 boundary. (thanks to Teemu Kalvas)
3006 * fixed some bugs in the x86-64 port:
3007 ** Negative short int return values from c-calls are sign-extended
3009 ** The stack is aligned to 16-bytes for c-calls, as required by
3010 the ABI. (thanks to Cheuksan Wang)
3011 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3012 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3013 for enums. (thanks to Vincent Arkesteijn)
3014 ** Multiple small optimizations and bugfixes for floating point
3016 * fixed some bugs revealed by Paul Dietz' test suite:
3017 ** Space, Tab, Linefeed, Return and Page have the invalid
3018 secondary constituent character trait.
3019 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3021 ** WITH-INPUT-FROM-STRING should only update the index place on
3023 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3024 works more reliably.
3025 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3026 with one-dimensional arrays with fill pointers.
3027 ** TYPE-OF failed on a complex with an integer realpart and a
3029 ** compiler failure during type inference for the code of form
3030 (IF (EQL X (THE ...)) ...) (MISC.535).
3032 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3033 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3034 platform. The port supports 61-bit fixnums, large memory spaces
3035 and reloading shared object files.
3036 * enhancement: saving cores with foreign code loaded is now
3037 supported on ppc/Darwin in addition to the previously supported
3039 * enhancement: the statistical profiler now walks deeper into the
3040 call stack for more meaningful call-graphs and accrued time
3041 reports (x86/x86-64 only). It also now reports time spent in
3043 * enhancement: it is now possible to trace most individual methods
3044 of a generic function in addition to tracing the generic function
3046 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3048 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3049 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3050 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3051 produces an error. (thanks to Vincent Arkesteijn)
3052 * bug fix: NAMESTRING on pathnames with :WILD components in their
3053 directories works correctly. (thanks to Artem V. Andreev)
3054 * fixed bug 125: compiler preserves identity of closures. (reported
3056 * bug fixed: functions with &REST arguments sometimes failed with
3057 "Undefined function" when compiled with (DEBUG 3). (reported by
3059 * bug fix: overflow during compiling of setting element of a bit
3060 vector with constant index and value. (reported by Timmy Douglas)
3061 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3062 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3063 * on x86 compiler partially supports stack allocation of dynamic-extent
3065 * GO and RETURN-FROM do not check the extent of their exit points
3066 when compiled with SAFETY 0.
3067 * fixed some bugs related to Unicode integration:
3068 ** encoding and decoding errors are now much more robustly
3069 handled; it should now be possible to recover even from invalid
3070 input or output to the terminal. (thanks to Teemu Kalvas)
3071 ** provided a first cut at implementing STRING-TO-OCTETS and
3072 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3073 ** altered the SB-MD5 contributed module slightly, changing the
3074 interface just enough for it to be supportable for builds where
3075 lisp characters are not eight bits.
3076 * fixed some bugs revealed by Paul Dietz' test suite:
3077 ** the FORMATTER-generated functions for ~V[ conditionals require
3078 the correct number of arguments.
3079 ** READ-FROM-STRING returns the mandated second value when applied
3080 to displaced strings.
3081 ** the #\Rubout and #\Backspace characters are treated as invalid
3082 constituent characters by the tokenizer.
3084 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3085 * new feature: reloading changed shared object files with
3086 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3087 * new feature: references to foreign variables and functions
3088 can now be compiled and loaded before the corresponding shared
3089 object file is loaded, as long as the foreign definitions are
3090 available at runtime.
3091 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3092 supported. (thanks to Dan Debertin)
3093 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3094 just keywords. (thanks to Vincent Arkesteijn)
3095 * fixed bug #331: structure-class instances corresponding to
3096 DEFSTRUCT forms are now created eagerly.
3097 * fixed bug #345: backtraces from calls to undefined functions work
3098 on x86 as well. Related bug #61 is now also partially fixed on x86
3099 (backtraces from throws to unknown catch tags.)
3100 * bug fix: lambda-list parsing is now stricter vrt. order and number
3101 of lambda-list keywords.
3102 * bug fix: as specified by AMOP, an error is signalled if a
3103 class-option appears multiple times in a DEFCLASS form. (reported
3105 * bug fix: RANDOM can be compiled when the compiler derives the type
3106 of its numeric argument as a disjoint set of small integers.
3107 (reported by Paul Dietz)
3108 * bug fix: starting a core saved with shared objects loaded when
3109 those objects are not available no longer causes threaded SBCL to
3110 hang. (reported by Sean Ross)
3111 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3113 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3114 argument, which must always be NIL. (reported by Kalle Niemitalo)
3115 * bug fix: printing 1.0d+23 no longer results in an error.
3116 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3117 * bug fix: structure slot setters preserve evaluation order. (thanks
3119 * fixed some bugs related to Unicode integration:
3120 ** RUN-PROGRAM can allow its child to take input from a Lisp
3121 stream. (reported by Stefan Scholl)
3122 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3123 locales. (reported by Ken Causey)
3124 * fixed some bugs revealed by Paul Dietz' test suite:
3125 ** INCF, DECF and REMF evaluate their place form as specified in
3127 ** FORMATTER expands ~{ ~} iteration directives with V or #
3128 parameters correctly.
3129 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3130 consequent uses no arguments correctly.
3131 ** the system has a partial understanding of the (COMPLEX RATIO)
3133 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3136 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3137 * new feature: a build-time option (controlled by the :SB-UNICODE
3138 keyword feature, enabled by default) for building the system with
3139 support for the entire 21-bit character space defined by the
3141 * new feature: the system now has rudimentary external-format
3142 support; the primary user-visible change at this time is that
3143 characters with the high bit set (such as lower-case-e-acute) will
3144 print correctly to a terminal in a UTF-8 environment.
3145 * minor incompatible change: BASE-CHAR no longer names a class;
3146 however, CHARACTER continues to do so, as required by ANSI.
3147 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3148 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3149 has been moved to the SB-EXT package (temporarily re-exported from
3151 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3152 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3154 * fixed bug #351: better error-handlind and reporting for malformed
3156 * fixed bug #350: bignum-printing is now more memory-efficient,
3157 allowing printing of very large bignums, eg. (expt 2 10000000).
3158 (reported by Bruno Haible)
3159 * fixed bug #302: better primitive-type selection for intersection
3161 * fixed bug #308: non-graphic characters now all have names, as
3162 required. (reported by Bruno Haible)
3163 * bug fix: redefining a class with different superclasses now correctly
3164 removes it from the direct-subclasses of its previous superclasses.
3165 (reported by David Morse)
3166 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3167 new value now works. (reported by Bruno Haible)
3168 * bug fix: correct canonicalization of multiple non-standard slot
3169 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3170 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3171 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3172 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3173 now exists, an signals an error.
3174 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3175 during macroexpansion for non-iteration variables as well. (reported
3176 by Bruno Haible for CMUCL)
3177 * bug fix: Cyclic structures and unprintable objects in compiler
3178 messages no longer cause errors. (reported by Bruno Haible)
3179 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3180 and READ-FROM-STRING all now return a primary value of NIL if
3181 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3182 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3183 (reported by Bruno Haible for CMUCL)
3184 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3185 do not designate a condition. (reported by Bruno Haible for
3187 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3188 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3189 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3190 permitting resolution in favour of any of the conflicting symbols.
3191 (reported by Bruno Haible for CMUCL)
3192 * bug fix: EQUAL compiler optimizations is less aggressive on
3193 strings which can potentially compare true despite having distinct
3194 specialized array element types.
3195 * bug fix: unit enumerations can be defined without dividing by
3196 zero. (thanks to Vincent Arkesteijn)
3197 * FORMAT compile-time argument count checking has been enhanced.
3198 (report from Bruno Haible for CMUCL)
3199 * a partial workaround for the bug 262: the compiler does not try to
3200 inline-expand a local function doing RETURN-FROM from a deleted
3201 BLOCK. (thanks to Peter Denno for the bug report and to David
3202 Wragg for the simple test case)
3203 * fixed some bugs revealed by Paul Dietz' test suite:
3204 ** RENAME-PACKAGE allows all package designators as new package
3206 ** constraint propagation and lambda variable substitution are
3207 more cautious in dealing with partially deleted code.
3208 ** compiler sometimes lost reoptimization passes.
3209 ** CERROR, given a condition as condition designator, passes its
3210 remaining arguments to the continue format control without
3212 ** Case-altering FORMAT directives work correctly on non-ASCII
3214 ** The REAL type specifier handles bounds outside the floating
3215 point ranges without signalling FLOATING-POINT-OVERFLOW.
3216 ** Functions with IR1-transformations can create intercomponent
3217 references to global functions.
3218 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3220 ** FORMAT ~R treats a nil value for its first parameter correctly.
3222 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3223 * enhancement: saving cores with foreign code loaded is now
3224 supported on x86/NetBSD and sparc/Linux in addition to the previously
3225 supported platforms.
3226 * bug fix: on some platforms repeated installations caused multiple
3227 copies of HTML documentation to be installed -- should not happen
3228 any more. (reported by Stefan Scholl)
3229 * bug fix: parsing self-recursive alien record types multiple times
3230 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3231 original patch by Helmut Eller for CMUCL)
3232 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3233 (thanks to Richard Kreuter)
3234 * bug fix: defining classes whose accessors are methods on existing
3235 generic functions in other (locked) packages no longer signals
3236 bogus package lock violations. (reported by François-René Rideau)
3237 * bug fix: special variables as DEFMETHOD parameters no longer have
3238 associated bogus type declarations. (reported by David Wragg and
3240 * bug fix: read-write consistency on streams of element-type
3241 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3242 * bug fix: redefiniton of the only method of a generic function with
3243 no DEFGENERIC no longer emits a full WARNING. In addition,
3244 redefinition of generic functions with no DEFGENERIC to an
3245 incompatible lambda list now signals an error. (thanks to Zach
3247 * bug fix: DEFGENERIC now works even when there's a function of the
3248 same name in an enclosing lexical environment. (thanks to Zach
3250 * fixed compiler failure, caused by instrumenting code during
3251 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3252 * optimization: added loop analysis and improved register allocation
3253 * fixed some bugs revealed by Paul Dietz' test suite:
3254 ** POSITION on displaced vectors with non-zero displacement
3255 returns the right answer.
3256 ** (SIMPLE-STRING) is a valid type specifier for sequence
3258 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3260 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3261 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3263 ** The justification version of the FORMAT ~< directive treats
3264 non-zero minpad parameter correctly.
3266 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3267 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3268 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3269 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3270 the supported interface.
3271 * new feature: Single-stepping of code compiled with DEBUG 2 or
3272 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3273 * new feature: saving cores with foreign code loaded is now
3274 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3275 Timothy Moore's work for CMUCL)
3276 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3277 parameters to * instead of NIL if no initform is supplied.
3278 (reported by Johan Bockgaard)
3279 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3280 correctly when FUNCALL appears as the car of the form. Note:
3281 despite this FUNCALL forms are not currently subject to
3282 compiler-macro expansion. (port of Raymond Toy's fix for the
3283 same from CMUCL, reported by Johan Bockgaard)
3284 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3285 (thanks for Teemu Kalvas)
3286 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3287 case instead of terminating the iteration (thanks for Julian
3288 Squires, Sean Champ and Raymond Toy)
3289 * bug fix: incorrect expansion of defgeneric that caused a style
3290 warning. (thanks for Zach Beane)
3291 * bug fix: slot accessor effective method computation works properly
3292 for classes with multiple non-standard applicable methods on
3293 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3294 * on x86 compiler supports stack allocation of results of LIST and
3295 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3296 CMUCL implementation by Gerd Moellmann)
3297 * fixed some bugs revealed by Paul Dietz' test suite:
3298 ** FORMAT strings with both the ~<~:;~> form of the justification
3299 directive and pretty-printing directives cause an error.
3301 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3302 * incompatible change: the internal functions
3303 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3304 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3305 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3306 instead of the old functions.
3307 * new feature: on platforms where "dladdr" is available foreign
3308 function names now appear in backtraces. (based on Helmut Eller's
3310 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3311 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3313 * documentation: ASDF manual is now distributed with SBCL.
3314 * bug fix: SBCL can now load its contributed modules with REQUIRE
3315 even if the system-provided entries have been removed from
3316 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3318 * bug fix: backtraces involving undefined functions or assembly
3319 routines are more informative. (thanks to Brian Downing)
3320 * bug fix: mutually referent alien structures now work correctly.
3321 (reported by Rick Taube)
3322 * bug fix: structures defined by WITH-ALIEN can be referred to
3323 within other definitions in the same WITH-ALIEN.
3324 * bug fix: division operators (MOD, TRUNCATE and the like) with
3325 constant zero divisors and integer dividends no longer generate
3327 * bug fix: provide default methods for INPUT-STREAM-P and
3328 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3329 * bug fix: improve the detection and resolution of MOP metacycles
3330 (where effective method computation depends on the generic function
3331 having its effective method computed). (reported by Bruno Haible)
3332 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3333 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3334 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3335 * bug fix: pathnames with relative directory components can be
3336 represented relative to default pathnames.
3337 * optimization: in taking the GCD of bignums, reduce the two bignums
3338 to approximately the same size (using Euclid's algorithm) before
3339 applying the more sophisticated binary GCD. (thanks to Juho
3341 * optimization: COUNT on bitvectors now operates word-at-a-time.
3342 * optimization: ASH with a positive, but not necessarily constant,
3343 (leftwards) shift, when in a modular context, is compiled to a
3345 * fixed some bugs revealed by Paul Dietz' test suite:
3346 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3347 if the corresponding argument is NIL.
3348 ** FORMAT directives accepting a minpad parameter treat negative
3350 ** literal commas as character parameters to FORMAT directives are
3352 ** literal spaces directly after ~<Newline> directives within a
3353 format-logical-block (~:< ~@:>) do not induce :FILL-style
3354 conditional newlines.
3355 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3356 as specified: it no longer includes conditional newlines).
3357 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3359 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3360 :PER-LINE-PREFIX argument does not evaluate to a string.
3362 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3363 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3364 the manual for details; for now, package locks can be disabled by
3365 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3366 if no major problems are found then it is likely that they will be
3367 compiled in unconditionally.
3368 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3369 unsupported operators on all platforms. To load a shared library
3370 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3371 object file, link it into a shared library outside of SBCL and
3372 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3374 * bug workaround: ROOM T and the GC were not working together
3375 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3376 reporting facility aren't preserved. That reporting has been
3377 disabled, so now until and unless someone figures out how to make it
3378 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3379 * minor incompatible change: as threatened around sbcl-0.8.0, the
3380 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3381 The symbols are also exported from SB-PCL for backwards
3382 compatibility, but more so than before SB-PCL should be treated as
3383 an implementation-internal package.
3384 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3386 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3387 It is known as of this release not to work on the Alpha, however.
3388 * fixed bug #167: errors signalled due to illegal syntax in method
3389 bodies are now more legible.
3390 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3391 designators and can hence be used with TYPEP.
3392 * fixed bug #333: CHECK-TYPE now ensures that the type error
3393 signalled, if any, has the right object to be accessed by
3394 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3395 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3396 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3398 * fixed bug #334: programmatic addition of slots using specialized
3399 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3400 and :ALLOCATION :CLASS slots.
3401 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3402 float exponents. (rereported by Peter Seibel)
3403 * fixed a bug: #\Space (and other whitespace characters) are no
3404 longer considered to be macro characters in standard syntax by
3405 GET-MACRO-CHARACTER.
3406 * fixed bug: initialization of condition class metaobjects no longer
3407 causes an instance of the condition to be created. (reported by
3409 * fixed bug: it is now possible to have slots such that
3410 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3411 description is neither :INSTANCE nor :CLASS.
3412 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3413 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3414 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3415 non-standard SLOT-DEFINITION-ALLOCATION values.
3416 * fixed bugs: various race conditions handling exiting threads.
3417 CL-PPCRE's thread torture test now passes.
3418 * fixed arguably-a-bug: GC time proportional to number of threads in
3419 system even when most of them are idle
3420 * optimization: improved performance of BIT and SBIT on bit-vectors.
3421 * .fasl file incompatibility: The fasl file version number has
3422 been incremented because of changes associated with package locks.
3424 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3425 * minor incompatible change: the system no longer provides
3426 optimization hints (conditions which are TYPEP
3427 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3428 mode; these hints are still emitted when higher SPEED optimization
3430 * new contrib module: a sampling profiler (profiling by statistical
3431 sampling, rather than by instrumenting functions) is available as
3432 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3433 * the behaviour of the standard function ED is now customizeable by
3434 third parties through a hook variable: see ED's documentation
3435 string for information on the protocol.
3436 * the compiler no longer emits efficiency notes for (FUNCALL X)
3437 when the type of X is uncertain under default optimization
3439 * fixed bug 276: mutating a binding of a specialized parameter to a
3440 method to something that is not TYPEP the specializer is now
3442 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3443 exhibit the required behaviour on the x86 platform. (thanks to
3444 Peter van Eynde, Eric Marsden and Bruno Haible)
3445 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3446 even for difficult arguments. (reported by Peter Graves)
3447 * fixed bug 141a: the backquote printer now descends quoted
3449 * fixed another bug in backquote printing: no more destructive
3450 modification of the form's list structure. (reported by Brian
3452 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3453 move between its address being taken and the call to
3454 interrupt_thread, fixing a crashing race condition.
3455 * the SB-POSIX contrib implementation has been adjusted so that it
3456 no longer exhibits ridiculously poor performance when constructing
3457 instances corresponding to C structs.
3459 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3460 * minor incompatible change: the sb-grovel contrib now treats C
3461 structures as alien (in the sense of SB-ALIEN) objects rather than
3462 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3463 has implications for memory management of client code
3464 (sb-grovel-returned objects must now be manually managed) and for
3465 type safety (alien objects now have full types).
3466 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3467 used to control emission of compiler diagnostics, rather than the
3468 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3469 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3470 quality should be considered deprecated.
3471 * install.sh now installs the user manual as well
3472 * (not quite a new documentable feature, but worth considering in
3473 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3474 beginnings of a semantically meaningful condition hierarchy is
3475 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3477 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3478 designator as the defaults argument.
3479 * fixed bug: Displaced arrays whose displaced-to array has become
3480 too small now cause ARRAY-DIMENSION to signal an error, providing
3481 for safer bounds-checking. (reported by Bruno Haible)
3482 * fixed bug: DEFCLASS slot definitions with identical :READER and
3483 :WRITER names now signal a reasonable error. (reported by Thomas
3485 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3487 * fixed bug: Invalid slot specification errors now print correctly.
3488 (thanks to Zach Beane)
3489 * fixed bug 320: Shared to local slot value transfers in class
3490 redefinitions now happen corrently from superclasses as
3491 well. (reported by Bruno Haible)
3492 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3494 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3495 improper lists correctly. (reported by Bruno Haible)
3496 * fixed bug 313: source-transform for <fun-name> was erroneously
3497 applied to a call of a value of a variable with name <fun-name>.
3498 (reported by Antonio Menezes Leitao)
3499 * fixed bug 307: The obsolete instance protocol ensures that
3500 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3501 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3502 remove dead unknown-values globs from the middle of the stack.
3503 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3504 easier to resume long computations after using *BREAK-ON-SIGNALS*
3505 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3506 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3507 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3508 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3509 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3510 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3512 * fixed a (fairly theoretical) bug in string printing: if
3513 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3514 does not have array-element-type equal to the most general string
3516 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3517 function name. (thanks to Nikodemus Siivola)
3518 * fixed bug: compile-time format string checker failed on
3519 non-closed ~{. (reported by Thomas F Burdick)
3520 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3521 don't warn on legal loop code involving more than one aggregate
3522 boolean. (thanks to Nikodemus Siivola)
3523 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3524 in keyword position to MAKE-PACKAGE was not being reported as
3526 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3527 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3529 * fixed bugs 280 and 312: the checking for multiple definitions in a
3530 file is less likely to become confused by uses of inline
3532 * fixed bug: the #S reader macro performs the keyword coercion
3533 specified for slot names. (reported by Kalle Niemitalo)
3534 * fixed bug: lambda lists may contain symbols whose names start with
3535 & but are not lambda-list-keywords; their occurrence triggers a
3537 * fixed bug 321: define-method-combination argument lambda lists do
3538 not cause invalid code to be generated when &optional or &aux
3539 variables have default values. (reported by Bruno Haible)
3540 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3541 have CLOS classes; this appears also to have fixed reported
3542 instability in stack exhaustion detection.
3543 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3544 MUFFLE-WARNING when no associated restart is present is now
3546 * optimization: rearranged the expansion of various defining macros
3547 so that each expands into only one top-level form in a
3548 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3550 * optimization: used a previously little-used slot in symbols to
3551 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3553 * fixed some bugs revealed by Paul Dietz' test suite:
3554 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3556 ** Fixed an optimization bug related to inheritance of initforms
3557 from local to shared slots.
3558 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3559 ** CAST optimizer forgot to flush argument derived type.
3560 ** print/read consistency on floats is now orders of magnitude
3561 more likely. (thanks also to Bruno Haible for a similar report
3563 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3564 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3565 for objects of type REAL. Make it so.
3566 ** SXHASH is specified (infelicitously) to respect similarity,
3567 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3568 it so. (thanks to Markus Ziegler)
3569 ** on the Alpha, the compiler succeeds in compiling functions
3570 returning a known number of arguments greater than 63.
3571 ** fixed handling of invalid NIL arguments in keyword position
3573 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3575 ** provided a readably-printable representation for RANDOM-STATE
3577 ** ensured that pathnames, where they have a namestring, always
3578 print using #P"..." syntax.
3580 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3581 * Support for the forthcoming 2.0 version of the NetBSD kernel
3582 running on x86 hardware has been added. (thanks to Perry
3583 E. Metzger most immediately, and others for their past work)
3584 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3585 current release version; SBCL's OpenBSD support had been broken
3586 since about the time of OpenBSD's switch to ELF binary format.)
3587 * [placeholder for DX summary]
3588 ** user code with &REST lists declared dynamic-extent, under high
3589 speed or space and low safety and debug optimization policy.
3590 * The manual has been converted to Texinfo format and the debugger
3591 chapter from the cmucl manual has been added.
3592 * A facility has been added to extract documentation strings from
3593 sbcl and store them as Texinfo-formatted snippets for inclusion in
3594 the manual (via Texinfo's @include directive)
3595 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3596 the test case to Dave Roberts)
3597 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3598 pointers. (reported by Sean Ross)
3599 * bug fix: PROFILE output is printed nicely even for large numerical
3600 values. (thanks to Zach Beane)
3601 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3602 greater than 32 handle EOF correctly.
3603 * bug fix: on X86 an immediate argument of the IMUL instruction is
3604 correctly printed in disassembly. (thanks to Lutz Euler)
3605 * bug fix: class slots in redefined classes preserve their old
3606 values. (thanks to Bruno Haible and Nikodemus Siivola)
3607 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3608 succeeds. (reported by Marco Baringer)
3609 * fixed some bugs revealed by Paul Dietz' test suite:
3610 ** READ-SEQUENCE now works on ECHO-STREAMs.
3611 ** RATIONALIZE works more according to its specification. (thanks
3614 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3615 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3616 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3617 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3618 should matter to you only if you rebind the printer control
3619 variables and then find you want different bindings in the
3620 debugger than in the ordinary execution of your program.)
3621 * The runtime build system has been tweaked to support building
3622 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3623 assembler and linker. (thanks to Nikodemus Siivola)
3624 * Unbound, undefined, undeclared variables now trigger full
3625 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3626 more often programmer error than deliberate exploitation of undefined
3628 * optimization: the hash algorithm for strings has changed to one
3629 that is less vulnerable to spurious collisions. (thanks to Juho
3631 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3632 needless bounds checking. (thanks to Juho Snellman)
3633 * optimization: implemented multiplication as a modular
3634 (UNSIGNED-BYTE 32) operation on the PPC backend.
3635 * fixed some bugs revealed by Paul Dietz' test suite:
3636 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3638 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3639 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3640 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3642 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3644 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3646 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3647 their output stream on EOF from read.
3648 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3649 have been read to end-of-file.
3650 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3652 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3653 description of determination of which consecutive characters
3655 ** Printing the "Space" character with escaping on now yields "#\\ ",
3656 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3657 ** Reading floating-point numbers with *READ-BASE* set to a number
3658 less than 10 works correctly.
3659 ** Reading floating-point numbers with *READ-BASE* set to a number
3660 more than 10 works correctly.
3661 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3662 the readtable currently in effect.
3664 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3665 * minor incompatible change: parsing of namestrings on a physical
3666 (Unix) host has changed; numbers after the final #\. in a
3667 namestring are no longer interpreted as a version field. This is
3668 intented to be largely invisible to the user, except that the
3669 meaning of the namestring "*.*.*" has changed: it now refers to a
3670 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3671 should usually be replaced by
3672 (make-pathname :name :wild :type :wild :version :wild)
3673 with the added benefit that this is more likely to be portable.
3674 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3675 option to OPEN now signals an error if the file being opened
3676 exists; this may have an impact on existing code.
3677 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3678 signals received, on the PowerPC platforms (both Linux and
3679 Darwin). (thanks to Pierre Mai for pointing out the location of
3681 * several fixes on OS X: The system now builds and runs cleanly on
3682 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3683 (thanks to Brian Mastenbrook)
3684 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3685 second-resolution: integer multiples of 1/3600 between -24 and 24.
3686 (thanks to Vincent Arkesteijn)
3687 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3688 type when called with 1 argument; PEEK-CHAR checked type of
3689 PEEK-TYPE only after having read first character from a
3690 stream. (reported by Peter Graves)
3691 * bug fix: the garbage collector now has much better locality
3692 behaviour, and in particular no longer treats all memory as being
3693 exhausted when many small objects point to each other in a deeply
3695 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3696 recognized as being TYPEP their class.
3697 * bug fix: the PUSHNEW documentation string has been corrected.
3698 (thanks to Vincent Arkesteijn)
3699 * bug fix: defaulting of the value for the last of an atypically
3700 large number of multiple values being bound was not being
3701 performed correctly on the Alpha or PPC platforms
3702 * optimization: implemented multiplication as a modular
3703 (UNSIGNED-BYTE 32) operation on the x86 backend.
3704 * optimization: SEARCH on simple-base-strings can now be open-coded.
3705 (see also contrib/compiler-extras.lisp for inspiration for
3706 teaching the compiler about the Boyer-Moore algorithm).
3707 * value, returned by MAX (and MIN) called with several EQUALP, but
3708 not EQL, arguments now does not depend on compiler settings.
3709 * fixed some bugs revealed by Paul Dietz' test suite:
3710 ** in stack analysis liveness information is propagated from
3711 non-local entry points.
3712 ** pathwise CAST removing failed when the CAST node did not start
3714 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3715 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3717 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3718 host is already defined.
3719 ** RENAME-FILE works on streams instead of signalling an internal
3721 ** PEEK-CHAR uses the current readtable when determining whether
3722 or not a character is whitespace.
3723 ** MERGE-PATHNAMES handles the case when the pathname does not
3724 specify a name while the default-pathname specifies a version.
3725 ** Pathnames now stand a better chance of respecting print/read
3727 ** Attempting to use standardized file system operators with a
3728 pathname with invalid :DIRECTORY components signals a
3730 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3732 ** DIRECTORY on logical pathnames is more correct.
3733 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3734 signal a TYPE-ERROR if their argument is not a stream.
3735 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3736 designator argument does not designate a stream.
3737 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3738 examining the synonym.
3739 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3741 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3742 element-type larger than ([UN]SIGNED-BYTE 32).
3744 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3745 * When built with the :SB-FUTEX feature, threaded builds now take
3746 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3747 for faster/more reliable mutex and condition variable support.
3748 * Incompatible change (but one you probably shouldn't have been using
3749 anyway): the interface and code for arbitrating between multiple
3750 threads in the same user session has been redesigned.
3751 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3752 error when called without an explicit environment argument.
3753 (thanks to Nikodemus Siivola)
3754 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3755 confused about their position. (thanks to Adam Warner and Gerd
3757 * bug fix: Pretty printing backquoted forms with unquotations in the
3758 argument list position of various code constructs such as LAMBDA
3759 now works correctly. (reported by Paul Dietz)
3760 * bug fix: Pretty printing unquotations no longer loses all
3761 stream position information.
3762 * optimization: performance of string output streams is now less
3763 poor for multiple small sequence writes.
3764 * optimization: performance of CSUBTYPEP in the presence of complex
3765 expressions involving CONS and NOT many times has been improved.
3766 (reported by Paul Dietz)
3767 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3769 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3770 streams for the REPL, for the debugger, and so on. (thanks to
3772 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3773 * fixed some bugs revealed by Paul Dietz' test suite:
3774 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3775 is ignored if it is too small, rather than propagating through
3776 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3777 ** extremely complex negations of CONS types were not being
3778 sufficiently canonicalized, leading to inconsistencies in
3780 ** VALUES tranformer lost derived type.
3782 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3783 * fixed a bootstrapping bug: the build process no longer assumes
3784 that the various BOOLE-related constants have the same value in
3785 host and target lisps. (noted by Paul Dietz' test suite on an
3786 SBCL binary built from CLISP)
3787 * The system can now be dynamically linked on the MIPS platform,
3788 which enables dynamic loading of foreign code from Lisp. (thanks
3789 to Ralf Baechle for discussions on the MIPS ABI)
3790 * The system now records debugging information for its own source
3791 files in a filesystem-position-independent manner, relative to
3792 the "SYS" logical host.
3793 * fixed a compiler bug: MV-LET convertion did not check references
3794 to the "max args" entry point. (reported by Brian Downing)
3795 * tweaked disassembly notes to be less confident about proclaiming
3796 some instruction as an LRA. (thanks to Brian Downing)
3797 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3798 now each have their own history, command character, and other
3799 characteristics. (thanks to David Lichteblau)
3800 * fixed some bugs revealed by Paul Dietz' test suite:
3801 ** compiler failure in compiling LOGAND expressions including a
3803 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3804 shift greater than 32.
3805 ** FLUSH-DEST did not mark blocks for type check regeneration.
3806 ** HANDLER-CASE failed to accept declarations in handler clauses
3807 in some circumstances.
3809 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3810 * New code in contrib/sb-introspect (still probably not entirely
3811 stable yet) provides some support for smart Lisp development
3812 environments like SLIME.
3813 * The conditions signalled for errors occurring when loading .fasl
3814 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3815 in a way which should help ASDF recover gracefully.
3816 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3817 stuff has been cleaned up. If you code contrib/ stuff, this might
3818 affect you, and you can look at contrib/README, contrib/STANDARDS,
3819 and/or the 0.8.4.27 diff to check.
3820 * In full calls the compiler now does not generate checks for declared
3821 argument types for all arguments.
3822 * various threading fixes
3823 ** and some experimental patches which didn't make it into
3824 the main tree for this release, but which are shipped in
3825 contrib/experimental-thread.patch as a possible fix for some
3826 failures (deadlock, spinning...) in GC-intensive multithreaded
3828 * fixed PPC build problem (source code incompatibility of different
3829 library versions): added offsetof() hackery which attempts to divine
3830 where glibc maintainers put uc_mcontext today
3831 * fixed bug 282: compiler does not trust type assertions while passing
3832 arguments to a full call.
3833 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3834 &OPTIONAL VALUES type parameter.
3835 * fix bug 214: algorithm for noting rejected templates is now more
3836 similar to that of template seletion. (also reported by rydis on
3838 * fixed bug 141b: printing backquoted information readably and prettily
3839 inserts a space where necessary.
3840 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3841 (CHARACTER 10) are now reported as errors, rather than propagated
3842 as unknown types. (reported by piso on #lisp)
3843 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3844 with values NIL and :ERROR. (thanks to Milan Zamazal)
3845 * fixed bug 191c: CLOS now does proper keyword argument checking as
3846 described in CLHS 7.6.5 and 7.6.5.1.
3847 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3848 longer raise an error; further, using a list as a for-as-arithmetic
3849 counter now raises a meaningful error.
3850 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3851 now understood by sequence creation functions such as MAKE-SEQUENCE
3853 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3854 a STRING-INPUT-STREAM.
3855 * compiler enhancement: SIGNUM is now better able to derive the type
3857 * type declarations inside WITH-SLOTS are checked. (reported by
3859 * fixed some bugs revealed by Paul Dietz' test suite:
3860 ** incorrect optimization of TRUNCATE for a positive first
3861 argument and negative second.
3862 ** compiler failure in let-convertion during flushing dead code.
3863 ** compiler failure while deriving type of TRUNCATE on an
3864 interval, containing 0.
3865 ** ASH of a negative bignum by a negative bignum count now returns
3867 ** intersection of CONS types now canonicalizes properly, fixing
3868 inconsistencies in SUBTYPEP.
3870 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3871 * incompatible change: The --disable-debugger command line
3872 option now clobbers the debugger at a more fundamental
3873 level, by redefining #'INVOKE-DEBUGGER instead of by
3874 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3875 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3876 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3877 enter the debugger REPL and then suffer recursive errors
3878 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3879 while under the new system, BREAK in --disable-debugger mode
3880 terminates the system just as an unhandled error would.
3881 * fixed compiler performance when processing loops with a step >1;
3882 * bug fix: DOCUMENTATION now retrieves generic function
3883 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3884 support has been systematized, and now supports the methods
3885 specified by ANSI, along with a default method and a method for
3886 slot documentation. (reported by Nathan Froyd)
3887 * bug fix: effective methods associated with a generic function are
3888 no longer cached over a change of that generic function's method
3889 combination. (reported by Andreas Fuchs)
3890 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3891 names a non-existent directory. (thanks to Andreas Fuchs)
3892 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3893 the PPC platform, lead to stack corruption; this has been fixed.
3894 (reported by Rainer Joswig)
3895 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3896 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3897 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3898 arithmetic in general, is now much more reliable on the PPC
3900 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3901 platform now returns the right answer.
3902 * optimization: restored some effective method precomputation in
3903 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3904 precomputation is now tunable.
3905 * optimization: compiler-internal data structure use has been
3906 reviewed, and changes have been made that should improve the
3907 performance of the compiler by about 20%.
3908 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3909 simple-base-strings and simple-bit-vectors is improved.
3910 * optimization: the optimization of 32-bit logical and arithmetic
3911 functions introduced in version 0.8.3 on the x86 has been
3912 implemented on the mips, ppc and sparc platforms; an
3913 implementation of the same facility, but for 64-bit arithmetic,
3914 has been added for the alpha.
3915 * microoptimization: the compiler is better able to make use of the
3916 x86 LEA instruction for multiplication by constants.
3917 * bug fix: in some situations compiler did not report usage of
3918 generic arithmetic in (SPEED 3) policy.
3919 * bug 145b fix: compiler used wrong type specifier while converting
3920 MEMBER-types to numeric.
3921 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3923 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3924 index argument now works properly on the Alpha platform.
3925 * bug fix: floating point exception treatment on the Alpha platform
3927 * bug fix: FILE-POSITION works much better on string input and
3928 output streams. (thanks to Nikodemus Siivola)
3929 * bug fix: many threading/garbage collection symptoms sorted.
3930 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3931 might be pseudo-atomic.
3932 * internal change: Stopping for GC is now done with signals not
3933 ptrace. GC is now done in whichever thread wanted it, instead of
3935 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3937 * bug fix: result form in DO is not contained in the implicit
3939 * incompatible change: ICR structure is changed; the value part of
3940 CONTINUATION is now called LVAR; corresponding functions are
3941 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3942 * added type deriver for ISQRT (thanks to Robert E. Brown).
3943 * bug fix: better support for loading from the command line when an
3944 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3946 * fixed some bugs revealed by Paul Dietz' test suite:
3947 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3948 ** ROUND and FROUND now give the right answer when given very
3949 small float arguments.
3950 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3952 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3953 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3954 ** LCM should return a non-negative integer.
3955 ** PARSE-INTEGER returned the index of a terminator instead of the
3956 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3957 ** PARSE-INTEGER returned an incorrect index being applied to a
3959 ** LCM with two arguments of 0 returns 0 rather than signalling
3961 ** unsigned addition of a 32-bit constant with the high bit set no
3962 longer causes an internal compiler error on the x86.
3963 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3964 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3965 with negative last argument.
3966 ** byte specifiers with zero size and position no longer cause
3967 an error during type derivation.
3968 ** bignum multiplication on the Alpha platform now returns the
3970 * porting: The system now builds on SuSE AMD64, although it still
3971 generates a 32-bit binary.
3972 * .fasl file incompatibility: The fasl file version number has
3973 been incremented (because of the changes to internal compiler
3974 data structures referred to above).
3976 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3977 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3978 more accurately, on the Darwin kernel running on PowerPC hardware.
3979 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3980 * Compiler code deletion notes now signal a condition of type
3981 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3982 an associated MUFFLE-WARNING restart.
3983 * The compiler now performs limited argument count validation of
3984 constant format strings in FORMAT, and where appropriate in ERROR,
3985 CERROR and WARN. (thanks to Gerd Moellmann)
3986 * New ASDF-INSTALL contrib can be used for automatic download and
3987 installation of third-party Lisp code from CCLAN or other sites
3989 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3990 which forces another thread to execute a function supplied by the
3992 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3993 now accept and act upon their :ELEMENT-TYPE keyword argument.
3994 (reported by Martin Atzmueller, Edi Weitz)
3995 * bug fix: FILE-POSITION now accepts position designators up to
3996 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3997 is the greater. (thanks to Patrik Nordebo)
3998 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3999 Kalle Olavi Niemitalo)
4000 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4001 printable. (reported by Eric Marsden)
4002 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4003 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4004 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4005 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4006 (thanks to Stig Sandoe)
4007 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4008 UNREAD-CHAR now correctly includes the unread character in the
4009 target sequence. (thanks to Gerd Moellmann)
4010 * bug fix in threaded builds: the system can now be suspended and
4011 resumed by shell job control with minimal disruption.
4012 * bug fixes in times and timezones >2038AD
4013 * better handling of "where is GNU make?" problem in build scripts
4014 (thanks to Nikodemus Siivola)
4015 * new optimization: inside a named function any reference to a
4016 function with the same name is considered to be a self-reference;
4017 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4018 optimization quality.
4019 * new optimization on x86: logical functions and + now have
4020 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4021 used when the result is truncated to 32 bits.
4022 * VALUES declaration is partially enabled.
4023 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4024 * fixed some bugs revealed by Paul Dietz' test suite:
4025 ** The system now obeys the constraint imposed by
4026 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4027 types form a lattice under type intersection.
4028 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4029 ** ASSOC now ignores NIL elements in an alist.
4030 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4031 and (1+ MOST-POSITIVE-FIXNUM) answers.
4032 ** The addition of a method with invalid qualifiers to a generic
4033 function does not cause an error to be signalled immediately;
4034 a warning is signalled, and the error is generated only on
4035 calling the generic function.
4036 * changed .fasl file version number, in part to add type codes for
4037 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4038 obscure ANSI requirements
4040 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4041 * fixed bug 148: failure to inline-expand a local function left
4042 garbage, confusing the compiler.
4043 * fixed bugs 3cd: structure slot readers perform type check if the
4044 slot can have an invalid value (i.e. it is either not initialized
4045 or can be written with a less specific slot writer).
4046 * bug fix: the compiler now traps array references to elements off
4047 the end of an array; previously, the bounds checking in some
4048 circumstances could go off-by-one.
4049 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4051 * type declarations for array element types now obey the description
4052 on the CLHS page "Declaration TYPE", as per discussions on
4053 sbcl-help around 2003-05-08. This means that a declaration
4054 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4055 declaration, all references to BAR will be asserted or assumed
4056 (with THE, so dependent on compiler policy) to involve objects of
4057 type FOO. Note that no such declaration is implied in
4058 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4059 * declared types of functions from the "Conditions"
4060 chapter. (reported by Paul Dietz)
4061 * bug fix: CERROR accepts a function as its first argument.
4062 * bug fix: NTH an NTHCDR accept a bignum as index
4063 arguments. (reported by Adam Warner)
4064 * optimization: character compare routines now optimize comparing
4065 against a constant character. (reported by Gilbert Baumann)
4066 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4067 argument now works properly on the MIPS platform.
4068 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4069 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4070 declared to have a functional type, does not cause an error
4072 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4073 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4074 * fixed bug: if last continuation of a deleted block has a
4075 destination, this destination should be deleted too. (reported by
4077 * fixed a bug in the bootstrap process: the host compiler's values
4078 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4079 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4080 test case from Patrik Nordebo)
4081 * improved the ability of the disassembler on the PPC platform to
4082 provide helpful disassembly notes.
4083 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4084 the class in more cases than previously.
4085 * bug fix: FILE-POSITION now understands :START and :END for
4086 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4087 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4088 8) data. (thanks to David Lichteblau)
4089 * bug fix: it is possible to add a method to a generic function
4090 without lambda list.
4091 * bug fix: reader failed to signal END-OF-FILE inside an
4092 object representation. (reported by Nikodemus Siivola)
4093 * fixed some bugs revealed by Paul Dietz' test suite:
4094 ** LAST and [N]BUTLAST should accept a bignum.
4095 ** condition slot accessors are methods.
4096 ** (VECTOR NIL) is a subtype of STRING.
4098 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4099 * minor incompatible change: some nonsensical specialized lambda
4100 lists (used in DEFMETHOD) which were previously ignored now signal
4102 * minor incompatible change: the system is now aware of the types of
4103 variables in the COMMON-LISP package, and will signal errors for
4104 most violations of these type constraints (where previously they
4105 were silently accepted).
4106 * minor incompatible change: COMPILE-FILE now uses the freedom
4107 afforded (ANSI 3.2.2.3) to use derived function types for
4108 functions defined in the same file. This also permits the system
4109 to warn on static type mismatches and function
4110 redefinition. (Currently it does not work with high DEBUG level.)
4111 * minor incompatible change: VALUES declaration is disabled.
4112 * When issuing notes, the compiler now signals a condition of type
4113 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4114 restart for use in user handlers. It is expected that the
4115 COMPILER-NOTE condition will eventually become a condition
4116 supertype to a hierarchy of note types, which will then be
4117 handleable in a similar fashion. However, at the moment, no such
4118 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4119 but it's an implementation detail, not a classification for the
4121 * Changes in type checking closed the following bugs:
4122 ** type checking of unused values (192b, 194d, 203);
4123 ** template selection based on unsafe type assertions (192c, 236);
4124 ** type checking in branches (194bc).
4125 * A short form of VALUES type specifier has ANSI meaning (it has
4126 increased the number of situations when SBCL cannot perform type
4128 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4129 keywords or constants is permissible.
4130 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4131 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4132 classes. (thanks to Antonio Martinez)
4133 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4134 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4135 argument to a pretty-print stream. Instead, it leaves any such
4136 operations to DESCRIBE-OBJECT methods.
4137 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4139 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4140 lambda lists. (thanks to David Lichteblau)
4141 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4142 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4143 (thanks to Gerd Moellmann)
4144 * fixed bug 246: increased compilation speed of long
4145 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4147 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4149 * DEFCONSTANT now throws a condition of type
4150 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4151 constant to a non-EQL value; CONTINUE and ABORT restarts
4152 respectively change and preserve the value.
4153 * fixed bug 63: The code walker, part of the implementation of CLOS,
4154 is now better at handling symbol macros.
4155 * bug fix: There is no longer an internal implementation type named
4156 CL:LENGTH. (reported by Raymond Toy)
4157 * bug fix: In macro-like defining macros/special operators the
4158 implicit block does not enclose the lambda list.
4159 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4160 enclosed in parentheses) are not suitable as type specifiers, and
4161 their use properly signals an error now.
4162 * bug fix: An argument count mismatch for a type specifier in code
4163 being compiled no longer causes an unhandled error at compile
4164 time, but signals a compile-time warning.
4165 * fixed simple vector readable printing
4166 * bug fix: DESCRIBE takes more care over whether the class
4167 precedence list slot of a class is bound before accessing it.
4168 (reported by Markus Krummenacker)
4169 * bug fix: FORMATTER can successfully compile pretty-printer format
4170 strings which use variants of the ~* directive inside.
4171 * bug fix: SEARCH now applies its TEST predicate to the elements of
4172 the arguments in the correct order. (thanks to Wolfhard Buss)
4173 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4174 in type inference. (thanks to Robert E. Brown)
4175 * bug fix: Reading in symbols with an explicit package name of ""
4176 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4177 * fixed some bugs revealed by Paul Dietz' test suite:
4178 ** NIL is now allowed as a structure slot name.
4179 ** Arbitrary numbers, not just REALs, are allowed in certain
4180 circumstances in LOOP for-as-arithmetic clauses.
4181 ** Multiple class redefinitions before slot access no longer
4182 causes a type error.
4183 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4184 association between the name and a class.
4185 ** Generic functions with non-standard method-combination and over
4186 five methods all of which return constants no longer return NIL
4187 after the first few invocations. (thanks to Gerd Moellmann)
4188 ** CALL-NEXT-METHOD with no arguments now passes the original
4189 values of the arguments, even in the presence of assignment.
4190 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4192 ** DISASSEMBLE works with closures and funcallable instances.
4193 ** ADD-METHOD now returns the generic function, not the new method.
4194 ** FIND-METHOD signals an error if the lengths of the specializers
4195 is incompatible with the generic function, even if the ERRORP
4197 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4198 which its argument is a member.
4199 ** DEFCLASS only redefines the class named by its class-name
4200 argument if that name is the proper name of the class;
4201 otherwise, it creates a new class.
4202 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4203 of the UNBOUND-SLOT condition to the name of the slot.
4204 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4205 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4206 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4207 SLOT-MAKUNBOUND in the specified fashion.
4209 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4210 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4211 cross-compilation host. As a consequence, we can now bootstrap our
4212 way up to SBCL starting with a bare gcc toolchain and human-readable
4213 source code (first the source to CLISP, then the source to SBCL).
4214 * A contributed module containing a partial implementation of the
4215 simple-streams interface has been included. (thanks to Rudi
4217 * A contributed module implementing the RFC1321 Message Digest
4218 Algorithm, known as MD5, has been included.
4219 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4220 no longer has any effect, as the code controlled by this feature
4221 has been deleted. (As far as we know, no-one has ever built using
4222 this feature, and its semantics were confused in any case).
4223 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4224 work on conditions (as required by the ANSI specification),
4225 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4226 expected behaviour on conditions. Users should note, however,
4227 that such behaviour is not required by the ANSI specification,
4228 and so use of this behaviour may render their code unportable.
4229 * fixed some bugs revealed by Paul Dietz' test suite:
4230 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4232 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4233 ** SXHASH on condition objects no longer returns NIL.
4234 ** :ALLOCATION :CLASS slots are better treated; their values are
4235 updated on class redefinition, and initforms inherited from
4236 superclasses are applied.
4237 ** REMOVE-METHOD returns its generic function argument even when
4238 no method was removed.
4239 ** SHARED-INITIALIZE now initializes the values of the requested
4240 slots, including those with :ALLOCATION :CLASS.
4241 ** ALLOCATE-INSTANCE now works on structure classes defined via
4242 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4244 ** SLOT-EXISTS-P now works on conditions, as well as structures
4246 ** MAKE-LOAD-FORM now has the required methods on
4247 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4248 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4249 keyword, and now implements the SLOT-NAMES argument.
4250 ** methods with &OPTIONAL arguments no longer allow too many
4251 arguments to be passed in the call without error.
4252 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4253 option is consistent with the required arguments of the generic
4254 function lambda list.
4255 * bug fix: REQUIRE accepts a string designator. (Thanks to
4257 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4258 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4259 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4260 * bug fix: The compiler now checks for duplicated variables in macro
4262 * bug fix: SETQ on globals returns the correct value.
4263 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4264 not a COMPILER-ERROR (followed by some other strange error on
4265 choosing the CONTINUE restart).
4266 * bug fix: make.sh and friends are now more consistent in the way that
4267 they look for GNU "make".
4269 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4270 * experimental native threads support (on x86 Linux >=2.4 only).
4271 This is not compiled in by default: you need to add :SB-THREAD to
4272 the target features. See the "Beyond ANSI" chapter of the manual
4274 * fix for longstanding nonANSIism: The old distinction between
4275 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4276 The return value from CL:FIND-CLASS is now a CLOS class, and
4277 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4278 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4279 * An interface to the MetaObject Protocol, as described in Kiczales,
4280 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4281 MIT Press, 1991, is available from the SB-MOP package.
4282 * incompatible change: the SB-PCL package should now be considered
4283 a private implementation detail, and no longer a semi-private MOP
4285 * minor incompatible change: due to rearrangement for threads, the
4286 control stack and binding stack are now allocated at arbitrary
4287 addresses instead of being hardcoded per-port. Users affected by
4288 this probably have to be doing advanced things with shared
4289 libraries, and will know who they are.
4290 * minor incompatible change: Previously, all --eval forms used were
4291 processed with READ before any of them were processed with EVAL.
4292 Now each --eval form is processed with both READ and EVAL before
4293 the next --eval form is processed. (Thus package operations like
4294 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4295 work as the user might reasonably expect.)
4296 * minor incompatible change: *STANDARD-INPUT* is now only an
4297 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4299 * minor incompatible change: Y-OR-N-P is now character-oriented,
4300 not line oriented. Also, YES-OR-NO-P now works without errors.
4301 (thanks to Antonio Martinez)
4302 * sb-aclrepl module improvements: an integrated inspector, added
4303 repl features, and a bug fix to :trace command.
4304 * Known functions, which cannot be open coded by the backend, are
4305 considered to be able to check types of their arguments. (fixing
4306 a bug report by Nathan J. Froyd)
4307 * fixed a bug in computing method discriminating functions: It is
4308 now possible to define methods specialized on classes which have
4309 forward-referenced superclasses. (thanks to Gerd Moellmann)
4310 * fixed evaluation order in optional entries (reported by Gilbert
4312 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4313 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4314 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4315 required-by-AMOP NAME argument, as well as CLASS and
4316 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4317 * fixed bug 20: DEFMETHOD can define methods using names that are
4318 not the proper names of classes to designate class specializers.
4319 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4320 Unix file descriptors, instead of blowing up. (thanks to Antonio
4322 * Garbage collection refactoring: user-visible change is that a
4323 call to the GC function during WITHOUT-GCING will not do garbage
4324 collection until the end of the WITHOUT-GCING. If you were doing
4325 this you were probably losing anyway.
4326 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4327 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4328 TYPEP the latter but not the former.
4329 * The compiler issues a full WARNING for calls to undefined functions
4330 with names from the CL package.
4331 * MAP-INTO for a vector destination is open coded. (reported by
4332 Brian Downing on c.l.l)
4333 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4334 documentation string.
4335 * fixed some bugs revealed by Paul Dietz' test suite:
4336 ** COPY-ALIST now signals an error if its argument is a dotted
4338 ** Condition slots are now accessed more correctly in the presence
4339 of multiple initargs for a given slot.
4340 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4341 exclude restarts of the same name associated with a different
4343 ** DEFCLASS of forward-referenced classes with another
4344 forward-referenced class in the superclasses list no longer
4346 ** Condition slots are now initialized once each, not multiple
4347 times. (thanks to Gerd Moellmann)
4348 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4350 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4351 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4352 arguments contain duplicated elements.
4353 ** RESTART-CASE understands local macros.
4354 ** RESTART-CASE associates exactly its own restarts with a condition.
4355 ** ENDP in safe mode checks its argument to be of type LIST.
4356 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4357 in question is unbound.
4358 ** Optimized MAKE-INSTANCE functions no longer cause internal
4359 assertion failures in the presence of duplicate initargs.
4360 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4361 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4362 propagated even in the ctor optimized implementation of
4364 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4366 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4367 * a better implementation of SXHASH on (simple) bit vectors,
4368 measured both in execution speed and in distribution of results
4369 over the positive fixnums, has been installed. Likewise, a better
4370 implementation of EQUAL for simple bit vectors is now available.
4371 * fixed CEILING optimization for a divisor of form 2^k.
4372 * fixed bug 240 (emitting extra style warnings "using the lexical
4373 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4374 by Antonio Martinez)
4375 * fixed SXHASH, giving different results for NIL depending on type
4376 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4377 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4378 variable. (found by Rolf Wester)
4379 * SBCL does not ignore type declarations for special
4380 variables. (reported by rif on c.l.l 2003-03-05)
4381 * some bug fixes in contrib/sb-aclrepl/
4382 * fixed some bugs revealed by Paul Dietz' test suite:
4383 ** a bug in the CONS type specifier, whereby the CAR and CDR
4384 types got intertwined, has been fixed;
4385 ** the type system is now able to reason about the interaction
4386 between INTEGER and RATIO types more completely;
4387 ** APPEND, [N]REVERSE and NRECONC check that those their
4388 arguments, which must be proper lists, are really so;
4389 ** An array specialized to be unable to hold elements has been
4390 implemented, as required -- yes, really -- by ANSI;
4391 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4392 on malformed property lists;
4394 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4395 * incompatible packaging change: in line with Unix convention,
4396 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4397 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4398 * REQUIRE and PROVIDE are now optionally capable of doing something
4399 useful. See the documentation string for REQUIRE.
4400 * infrastructure for a managed SBCL contrib system: contributed
4401 modules in this release include:
4402 ** the ASDF system definition facility;
4403 ** an interface to the BSD Sockets API;
4404 ** an ACL-like convenience interface to the repl;
4405 (thanks to Kevin Rosenberg)
4406 ** an implementation of ROTATE-BYTE, with efficient implementation
4408 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4409 gives a closer approximation to the right answer than previously.
4410 (thanks to Raymond Toy)
4411 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4412 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4413 optional environment arguments, as required by ANSI.
4414 * fixed bugs in other functions taking environment objects, allowing
4415 calls with an explicit NIL environment argument to be compiled
4417 * fixed bug 228: primary return values from
4418 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4419 COMPILE or FUNCTION.
4420 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4421 :TYPE will no longer signal errors on innocuous objects.
4422 * fixed bug 231b: SETQ is better at respecting type declarations in
4423 the lexical environment.
4424 * fixed a bug in DEFCLASS: classes named by symbols with no or
4425 unprintable packages can now be defined.
4426 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4427 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4428 * fixed compiler failure related to checking types of functions.
4429 (reported by Robert E. Brown)
4430 * the compiler is now much more consistent in its error-checking
4431 treatment of bounding index arguments to sequence functions: in
4432 (SAFETY 3) code, errors will be signalled in almost all cases if
4433 invalid sequence bounding indices are passed to functions defined
4434 by ANSI to operate on sequences.
4435 * fixed a bug in the build procedure: documentation of SBCL-specific
4436 packages is now preserved and available in the final Lisp image.
4437 * lifted FDEFINITION lookup out of loops in the implementation of
4438 many list operations. (thanks to Robert E. Brown)
4439 * fixed a bug in the reader: the #n# reader macro now works for
4440 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4441 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4442 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4443 E. Brown and Tony Martinez respectively)
4444 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4445 SLOT-BOUNDP: in particular, it is now able to optimize them much
4446 better, and is now not vulnerable to having packages renamed.
4447 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4448 always called when a slot is not present in an instance. (thanks
4450 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4451 longer signal an error on unreading a character following EOF on
4452 the previous constituent stream. (thanks to Tony Martinez)
4453 * fixed some bugs revealed by Paul Dietz' test suite:
4454 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4455 not just nonnegative fixnums;
4456 ** the logical bit-array operators such as BIT-AND now accept an
4457 explicit NIL for their "opt-arg" argument (to indicate a
4458 freshly-consed result bit-array);
4459 ** ELT now signals an error on an invalid sequence index in safe
4461 ** the type system is now cleverer about negations of numeric
4462 types, and consequently understands the BIGNUM and RATIO types
4464 ** the type system is now cleverer about the interaction between
4465 INTEGER and RATIO types: while bugs still remain, many more
4466 cases are accurately computed;
4467 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4468 if it is in the last clause;
4469 ** CONSTANTLY now correctly returns a side-effect-free function in
4471 ** DECLARE is no longer treated as a special-operator; in
4472 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4473 * incremented fasl file version number due to the change in the
4474 DEFSTRUCT-SLOT-DESCRIPTION structure.
4476 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4477 * minor incompatible change: code processed by the "interpreter" or
4478 EVAL now has a compilation optimization policy of (DEBUG 2)
4479 (changed from (DEBUG 1)) to improve debuggability of interactive
4480 development, and to allow the use of the debug RETURN command in
4482 * an experimental implementation of the RETURN command for the
4483 debugger has been included. (thanks to Frederik Kuivinen)
4484 * fixed bug 62: constraints were not propagated into a loop.
4485 * fixed bug in embedded calls of SORT (reported and investigated by
4487 * fixed some bugs revealed by Paul Dietz' test suite:
4488 ** printing and reading of arrays with some dimensions having
4489 length 0 (thanks to Gerd Moellmann);
4490 ** BOA constructor with &AUX argument without a default value does
4491 not cause a type error;
4492 ** CONSTANTP now returns true for all self-evaluating objects.
4494 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4495 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4496 accessors that are related by inheritance, as specified in the
4497 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4498 Valtteri Vuorikoski)
4499 * The compiler is now able to inline functions that were defined in
4500 a complex lexical environment (e.g. inside a MACROLET).
4501 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4503 * Support for the upcoming FreeBSD-5.0 release has been included.
4504 (thanks to Dag-Erling Smorgrav)
4505 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4506 effect when it is not in a toplevel context.
4507 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4508 stand a better chance of being correct. (thanks to Gerd
4510 * fixed bug in COERCE, which now signals an error on coercing a
4511 rational to a bounded real type which excludes the expected
4513 * The compiler is now able to derive types more accurately from the
4514 COERCE and COMPILE functions.
4515 * fixed bug 223: functional binding is considered to be constant
4516 only for symbols in the CL package.
4517 * fixed bug 231: SETQ did not check the type of a variable being set
4518 (reported by Robert E. Brown)
4519 * A new optimization for MAKE-INSTANCE has been included, fixing
4520 various bugs (including relating to :ALLOCATION :CLASS slots and
4521 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4523 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4524 ** As required by ANSI, LOOP now disallows anonymous collection
4525 clauses such as COLLECT I in conjunction with aggregate boolean
4526 clauses such as THEREIS (= I 1);
4527 ** LOOP now signals an error when any variable is reused in the
4528 same loop (including the potentially useful construct analogous
4529 to WITH A = 1 WITH A = (1+ A);
4530 ** IT is only a special loop symbol within the first clause of a
4531 conditional loop clause;
4532 ** LOOP with a typed iteration variable over a hashtable now
4533 signals a type error iff it should.
4534 * fixed some other bugs revealed by Paul Dietz' test suite:
4535 ** FILE-STREAM now names the class previously known as FD-STREAM;
4536 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4537 argument) no longer signals an error;
4538 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4539 of the slot symbol, rather than using the current package
4540 ((:CONC-NAME "") continues to intern the slot's name in the
4542 * incremented fasl file version number, because of the incompatible
4543 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4544 of the new implementation of DEFINE-COMPILER-MACRO.
4546 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4547 * Support for building SBCL for MIPS platforms running in
4548 little-endian mode has now been checked in, and basic
4549 functionality on said platforms verified.
4550 * minor incompatible change: PCL now records the pathname of a file
4551 in which methods and the like are defined, rather than its
4553 * minor incompatible change: TRUENAME now considers the truename of
4554 a file naming a directory to be the pathname with :DIRECTORY
4555 component indicating that directory.
4556 * minor incompatible change: a NAMED clause in the extended form of
4557 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4558 reason for the previous behaviour is unclear.
4559 * more systematization and improvement of CLOS and MOP conformance
4560 in PCL (thanks to Gerd Moellman and Pierre Mai):
4561 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4563 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4564 primary methods with no specializers;
4565 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4567 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4568 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4569 FORWARD-REFERENCED-CLASSes; error reporting on
4570 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4572 ** SXHASH on CLOS instances now uses a slot internal to the
4573 instance to return different numbers on distinct instances,
4574 while preserving the same return value through invocations of
4576 ** DEFMETHOD signals errors when methods with longer incongruent
4577 lambda lists are added to generic functions;
4578 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4579 CLASS, as specified in AMOP;
4580 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4581 on the order returned by the primary method for classes of
4582 class STANDARD-CLASS;
4583 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4584 * fixed some bugs shown by Paul Dietz' test suite:
4585 ** DOLIST puts its body in TAGBODY;
4586 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4588 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4589 value producing form;
4590 ** if more variables are given to PROGV than values, extra
4591 variables are bound and made to have no value;
4592 ** NSUBSTITUTE on list arguments gets the right answer with
4594 ** ELT signals an error of type TYPE-ERROR when the index argument
4595 is not a valid sequence index;
4596 ** LOOP signals (at macroexpansion time) an error of type
4597 PROGRAM-ERROR when duplicate variable names are found;
4598 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4599 ** FUNCALL of special-operators now cause an error of type
4601 ** PSETQ now works as required in the presence of side-effecting
4602 symbol-macro places;
4603 ** NCONC accepts any object as its last argument;
4604 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4606 ** loop-for-as-package does not require a package to be explicitely
4608 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4610 * fixed bug 166: compiler preserves "there is a way to go"
4611 invariant when deleting code.
4612 * fixed bug 172: macro lambda lists with required arguments after
4613 &REST arguments now cause an error to be signalled. (thanks to
4615 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4616 bug. (thanks to Matthew Danish)
4617 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4619 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4620 arguments are lexically rebound. (thanks to Gerd Moellmann and
4622 * fixed bug 194: error messages are now more informative when there
4623 is no primary method applicable in a call to a generic
4624 function. (thanks to Gerd Moellmann)
4625 * fixed bug in command line argument checking (thanks to Julian
4627 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4628 (thanks to Matthew Danish)
4629 * incremented fasl file version number, because of the
4630 SXHASH-related changes in the layout of CLOS data structures
4632 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4633 * minor incompatible change: The runtime (the Unix executable named
4634 "sbcl") is now much pickier about the .core files it will load.
4635 Essentially it now requires .core files to descend from the same
4636 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4637 as the runtime does. (The intent is to prevent the crashes which
4638 can occur, and which can even be reported as mysterious failures,
4639 when people patch the sources or change the build parameters
4640 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4641 sbcl and .core files.)
4642 * fixed bug: VALUES-LIST is no longer optimized away.
4643 * fixed bug 142: The FFI conversion of C string values to Lisp
4644 string values no longer conses excessively. (thanks to Nathan
4645 Froyd porting Raymond Toy's fix to CMU CL)
4646 * began to systematize and improve MOP conformance in PCL (thanks to
4647 Nathan Froyd, Gerd Moellman and Pierre Mai):
4648 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4650 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4651 ** FINALIZE-INHERITANCE is now called on class finalization;
4652 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4653 argument precedence order.
4654 * fixed bug 202: The compiler no longer fails on functions whose
4655 derived types contradict their declared type.
4656 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4657 so it can be non-toplevel.
4658 * The fasl file version number has changed (because of the new
4659 implementation of DEFMACRO).
4660 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4661 safe code, that any length requirement by their type-specifier
4662 argument is valid. The exceptions to this are described in bug
4664 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4665 functions now check the types of their inputs as required by ANSI.
4666 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4667 introduced symbol is DECLAREd to be SPECIAL.
4668 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4669 * fixed bug: :COUNT argument to sequence functions may be negative
4670 * fixed bug: body of DO-SYMBOLS may contain declarations
4671 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4672 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4673 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4674 symbol macro only once
4675 * fixed printing of call frame when argument list is unavailable
4676 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4677 * compiler no longer signals WARNING on unknown keyword
4680 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4681 * A beta-quality port to the mips architecture running Linux,
4682 based on the old CMUCL backend, has been made. It has been tested
4683 on a big-endian kernel, and works sufficiently well to be able to
4684 rebuild itself; it has not been tested in little-endian mode.
4685 * fixed an inconsistency between gencgc.c and purify.c which made
4686 dumping/loading .core files unreliable
4687 * fixed bug 120a: The compiler now deals correctly with IFs where
4688 the consequent is the same as the alternative, instead of
4689 misderiving the return type. (thanks to Alexey Dejneka)
4690 * fixed bug 113: Logical pathnames are now dumpable (the logical
4691 host is resolved at load-time, throwing an error if it is not
4693 * fixed bug 174: FORMAT's error message is slightly clearer when a
4694 non-printing character is used in a format directive.
4695 * fixed several bugs in compiler checking of type declarations, i.e.
4696 violations of the Python "declarations are assertions" principle
4697 (thanks to Alexey Dejneka)
4698 * fixed several bugs in PCL's error checking (thanks to Gerd
4700 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4702 * fixed bug in compilation of functions as first class values
4703 (thanks to Antonio Martinez-Shotton)
4704 * The compiler's handling TYPE-ERRORs which it can prove will
4705 inevitably happen at runtime has been cleaned up and corrected
4706 in several ways. (thanks to Alexey Dejneka)
4707 * improved argument type checking for various basic arithmetic
4708 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4709 lavished on them in the past that they can be compiled in many
4710 ways in different special cases
4711 * fixed bug 181: compiler checks validity of user supplied type
4713 * cleaned up code flushing in optimization: Function calls which
4714 should signal errors for safety purposes (e.g. which ANSI says
4715 should signal errors when their arguments are of incorrect type)
4716 are no longer optimized away.
4717 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4718 * incremented fasl file version number, because changes in the
4719 implementation of sequence functions like COERCE caused
4720 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4721 in old inline expansions) to become undefined. (Actually these
4722 changes were later undone, so we might very well be binary
4723 compatible with 0.7.7 after all, but leaving the version number
4724 incremented seemed like the simplest and most conservative
4727 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4728 * An alpha-quality port to the parisc architecture running Linux,
4729 based on the old CMUCL backend, has been made. This, even more so
4730 than the other backends, should be considered still a work in
4731 progress; known problems include that the Linux kernel in 64-bit
4732 mode does not propagate the correct sigcontext structure to
4733 userspace, and consequently SBCL on a parisc64 kernel will not
4735 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4736 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4737 suppressed.) Also now that the compiler is looking at declarations
4738 in the environment, it checks optimization declarations as well,
4739 and suppresses inlining when (> DEBUG SPEED).
4740 * More fixes have been made to treatment of floating point exception
4741 treatment and other Unix signals. In particular, floating point
4742 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4743 * The detection and handling of control stack exhaustion (infinite
4744 or very deeply nested recursion) has changed. Stack exhaustion
4745 detection is now done by write-protecting pages at the OS level
4746 and applies at all optimization settings; when found, a
4747 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4748 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4749 be caught using IGNORE-ERRORS.
4750 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4751 correctly when transforming recursive LABELS functions to LETs.
4752 (thanks to Alexey Dejneka)
4753 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4754 that are names of constants or global variables.
4755 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4756 alien routines with docstrings.
4757 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4758 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4760 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4761 (thanks to Eric Marsden)
4762 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4763 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4764 * Bug fix: The SPARC backend can now compile functions involving
4765 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4766 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4767 to a functions expecting a PATHNAME-DESIGNATOR.
4768 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4769 lambda lists. (thanks to Alexey Dejneka)
4770 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4771 functions so that EXPORTing the name of the class doesn't cause
4772 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4773 to Antonio Martinez for reporting this)
4774 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4775 constant-folded without failing an assertion. (thanks to Einar
4776 Floystad Dorum for reporting this)
4777 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4778 types are now dealt with more correctly by the compiler.
4779 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4780 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4781 behaviour analogous to RENAME-FILE. This puts its behaviour more
4782 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4784 * The fasl file version number has changed again. (because of the
4785 bug fix involving the names of PCL MAKE-INSTANCE functions)
4787 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4788 * bug fix: Floating point exceptions are treated much more
4789 consistently on the x86/Linux and PPC/Linux platforms.
4790 * Array initialization with :INITIAL-ELEMENT is now much faster for
4791 cases when the compiler cannot open code the array creation, but
4792 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4793 array accesses have also seen a speed increase.
4794 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4795 specified. (This was at the root of some bad interactions between
4796 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4798 * bug fix: Internal error arguments for undefined functions are now
4799 computed correctly on the PPC/Linux platform.
4800 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4801 Raymond Toy's patch for CMU CL)
4802 * Support for the Solaris 9 operating environment has been included
4803 (thanks to Daniel Merritt)
4804 * A very ugly but hopefully complete draft of the missing FFI chapter
4805 of the manual has been created by reformatting the corresponding
4806 CMU CL manual chapter into (currently very ugly and incoherent)
4807 DocBook and bringing it up to date for SBCL behavior. Thus, the
4808 manual is now essentially complete, at least by my extreme
4809 once-and-only-once standards, whereby it's acceptable to refer to
4810 the doc strings of SB-EXT functions as the primary documentation.
4811 * The fasl file version number has changed again, due to cleanup of
4812 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4813 is no longer a static symbol.)
4815 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4816 * SBCL now builds with OpenMCL (version 0.12) as the
4817 cross-compilation host; also, more progress has been made toward
4818 bootstrapping under CLISP.
4819 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4821 * bug 158 fixed: The compiler can now deal with integer loop
4822 increments different from 1; fixing this turned out also to fix
4824 * bug 169 fixed: no more bogus warnings about using lexical bindings
4825 despite the presence of perfectly good SPECIAL declarations (thanks
4826 to David Lichteblau)
4827 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4828 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4829 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4831 * bug 180 fixed: Method combination specifications no longer ignore
4832 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4833 * bug fix: Structure type predicate functions now check their argument
4834 count as they should.
4835 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4836 correctly. (thanks to Pierre Mai)
4837 * minor incompatible change: The --noprogrammer option is deprecated
4838 in favor of the new --disable-debugger option, which is very similar.
4839 (The major difference is that it takes effect at a slightly different
4840 time at startup, causing handling of errors in --sysinit and
4841 --userinit files will be affected differently.) The
4842 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4843 been added to allow this functionality to be controlled from ordinary
4844 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4845 maintainers, who might want to run non-interactive scripts to
4846 build SBCL cores which will later be used interactively.)
4847 * minor incompatible change: The LOAD function no longer, when given
4848 a wild pathname to load, loads all files matching that pathname.
4849 Instead, an error of type FILE-ERROR is signalled.
4851 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4852 * bug 147 fixed: The compiler preserves its block link/count
4853 invariants more correctly now so that it doesn't crash. (thanks
4855 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4857 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4858 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4859 no-value-for-this-character as NIL (as specified by ANSI).
4860 * HOST-NAMESTRING on physical pathnames now returns a string that is
4861 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4862 (thanks to Christophe Rhodes)
4863 * The Alpha port handles icache flushing more correctly. (thanks to
4865 * More progress has been made toward bootstrapping under CLISP. (thanks
4866 to Christophe Rhodes)
4867 * The fasl file format has changed again, because dynamic loading
4868 on OpenBSD (which has non-ELF object files) motivated some cleanups
4869 in the way that foreign symbols are transformed and passed around.
4870 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4871 is no longer treated as whitespace by the reader, but instead as
4872 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4873 |A
\7fB|, instead of A as it used to.
4875 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4876 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4877 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4878 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4879 this as of 0.7.1.45, but was left out of the previous news section
4880 (thanks to Dan Barlow)
4881 * SBCL now runs on the Solaris operating system on SPARC architectures
4882 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4883 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4884 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4885 * SPARC backend cleanups, allowing builds of cores optimized for V8
4886 and V9 SPARCS, and also emission of code targeted to a particular
4887 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4889 * SBCL is closer to bootstrapping under CLISP, thanks to various
4890 fixes by Christophe Rhodes.
4891 * The fasl file format has changed again, to allow the compiler's
4892 INFO database to support symbol macros.
4893 * The user manual (in doc/) is formatted into HTML more nicely.
4894 (thanks to coreythomas)
4895 * The system is smarter about SUBTYPEP relationships, especially
4896 those involving NOT types (including types such as ATOM which are
4897 represented internally using NOT types). Thus SUBTYPEP is less
4898 likely to return (VALUES NIL NIL) in general, and in particular
4899 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4901 * The fasl file format has changed again, because the internal
4902 representation of types now includes a new slot to support the new
4903 SUBTYPEP-of-NOT-types logic.
4904 * (not a change in the main branch of SBCL, but a related prototype
4905 which can hopefully be merged into the main branch of SBCL in the
4906 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4907 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4908 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4909 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4910 dispatch macro character combinations. (thanks to Alexey Dejneka)
4911 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4912 that superficially look like logical namestrings correctly.
4913 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4915 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4916 default supplied-p) for &optional and &key arguments. (thanks to
4919 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4920 * incompatible change: The compiler is now less aggressive about
4921 tail call optimization, doing it only when (> SPACE DEBUG) or
4922 (> SPEED DEBUG). (This is an incompatible change because there are
4923 programs which relied on the old CMU-CL-style behavior to optimize
4924 away their unbounded recursion which will now die of stack overflow.)
4925 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4926 for non-GENCGC systems has been increased to 20M (since that
4927 seems much closer to the likely performance optimum for modern
4928 systems than the old 4M value was)
4929 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4930 and *DEBUG-PRINT-LEVEL*
4931 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4932 of CMU CL's support for SPARC, and various endianness and other
4933 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4934 * new syntactic sugar for the Unix command line: --load foo.bar is now
4935 an alternate notation for --eval '(load "foo.bar")'.
4937 ** The system now detects stack overflow and handles it gracefully,
4938 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4939 optimization settings. (This is a good thing in general, and
4940 its introduction in this version should be particularly timely
4941 for anyone whose code fails because of suppression of tail
4943 ** The system now hunts for the C variable "environ" in a more
4944 devious way, to avoid segfaults when the C library version differs
4945 between compile time and run time. (thanks to Christophe Rhodes)
4946 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4947 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4948 ** The compiler no longer issues bogus style warnings for undefined
4949 classes in the same source file as the DEFCLASSes which defined
4950 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4952 ** fixes in CONDITION class precedence list for undefined function
4953 errors (thanks to Alexei Dejneka)
4954 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4955 correctly. (thanks to Dan Barlow)
4956 ** portability fixes aiming at bootstrapping under CLISP (thanks
4957 to Dave McDonald and Christophe Rhodes)
4958 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4959 ** fixes in type translation and and type inference (thanks to
4961 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4962 ** various fixes in the new ports (thanks to Dan Barlow)
4963 * several changes related to debugging:
4964 ** suppression of tail recursion, as noted above
4965 ** stack overflow detection, as noted above
4966 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4967 is now the default. (For some time encapsulation has been more
4968 reliable than the breakpoint-based :ENCAPSULATE NIL
4969 implementation, at least on X86 systems; and I just noticed that
4970 encapsulation also seems closer to the spirit of the ANSI
4973 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4975 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4976 up properly again. (There was a packaging bug in 0.7.0 which
4977 left their definitions in SB-SYS::LOAD-FOREIGN and
4978 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4979 vital for most things which interface to C-level interfaces,
4980 like extensions working with sockets or databases or
4981 Perl-compatible regexes or whatever, and the need to fix
4982 this bug is the main reason that 0.7.1 was released so
4984 ** DEFGENERIC is now choosier about the methods it redefines, so that
4985 reLOADing a previously-LOADed file containing DEFGENERICs does
4986 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4987 cycle now works as it should. (thanks to Alexey Dejneka)
4988 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4989 fixed by Christophe Rhodes. (He actually submitted this patch
4990 months ago, and I delayed until after 0.7.0.)
4991 ** Bug 111 (internal compiler confusion about runtime checks on
4992 FUNCTION types) was fixed by Alexey Dejneka.
4993 * Some internal cleanups (getting rid of variables which aren't
4994 needed now that the byte interpreter is gone) caused the fasl
4995 file format number to change again.
4997 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4998 * major incompatible change: The default fasl file extension, i.e. the
4999 default extension for files produced by COMPILE-FILE, has changed
5000 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5002 ** There are many changes in the implementation of the compiler.
5003 SBCL is now essentially a compiler-only implementation of ANSI
5004 Common Lisp. EVAL still "interprets" a few special cases, but
5005 almost all the interesting cases are handled by creating
5006 a LAMBDA expression, calling COMPILE on it, then calling
5007 FUNCALL on the result.
5008 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5009 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5010 Since the code is newer, there might still be some new bugs
5011 (though not as many as before Martin Atzmueller's fixes:-). But
5012 the new code is substantially simpler and clearer, and hopefully
5013 any remaining bugs will be simpler, less fundamental, and more
5014 fixable then the bugs in the old code.
5015 ** The revised compiler is still a little unsteady on its feet.
5017 *** The debugging information it produces (particularly the names
5018 of FUNCTION objects) is sometimes much less useful than what
5019 the old compiler produced.
5020 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5021 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5022 within a MACROLET) has been temporarily weakened.
5023 ** There are new compiler optimizations for various functions:
5024 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5025 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5026 *** the math functions TRUNCATE, FLOOR, and CEILING
5027 *** the function-of-all-trades COERCE
5028 Mostly these should be transparent, but there's one
5029 potentially-annoying problem (bug 117): when the compiler
5030 inline-expands a function and does type analysis on the result,
5031 it can create control paths which have type mismatches, and
5032 when it can't prove that those control paths aren't taken,
5033 it will issue WARNINGs about the type mismatches. This is
5034 a particular problem in practice for the new sequence functions.
5035 It's not clear how this should be fixed, and for now, a
5036 workaround is given in the entry for 117 in the BUGS file.
5037 ** (Because of the interaction between the two previous items --
5038 occasional inlining problems and new inline expansions -- some
5039 of the new sequence function optimizations won't really kick in
5040 completely until debugging information, and then inlining, are
5041 straightened out in some future version.)
5042 * minor incompatible changes:
5043 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5044 DIRECTORY no longer implicitly promotes NIL slots of its
5045 pathname argument to :WILD. In particular, when you ask for the
5046 contents of a directory (which you used to be able to do without
5047 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5048 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5049 ** changes in behavior that ANSI explicitly defines to be
5050 implementation dependent:
5051 *** The new compiler-only implementation still conforms with ANSI,
5052 but acts a little different than before. Besides the obvious
5053 changes in performance tradeoffs (that the cost per form passed
5054 to EVAL has gone up, and the cost per form executed by EVAL
5055 has gone down), the behavior of the system changes a little
5056 because there are no longer any interpreted function objects.
5057 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5058 e.g. doing COMPILE on the output of interactive DEFUN is
5060 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5062 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5063 has changed from (:CL) to NIL.
5064 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5065 e.g. #\Newline and #\Tab, don't have names specified in the
5066 ANSI Common Lisp standard, is now based on their ASCII symbolic
5067 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5068 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5069 are no longer used for output.
5070 ** changes in internal implementation constants:
5071 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5072 4 million. (If your application spends a lot of time GCing and
5073 you have a lot of RAM, you might want to experiment with
5074 increasing it even more.)
5075 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5076 However, almost all old code should still continue to work without
5077 immediate update, as SB-C-CALL is now a (deprecated) nickname
5079 ** Old operator names in the style DEF-FOO are now deprecated in
5080 favor of new corresponding names DEFINE-FOO, for consistency with
5081 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5082 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5083 internal symbols, but a few supported extensions like
5084 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5085 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5086 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5087 etc. as you get deeper into recursive calls to the debugger
5088 command loop, instead of the old "5]", "5]]", "5]]]"
5089 sequence. (I was motivated to do this when squabbles between
5090 ILISP and SBCL left me very deeply nested in the debugger. In the
5091 short term, this change will probably provoke more ILISP/SBCL
5092 squabbles, but hopefully it will be an improvement in the long run.)
5093 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5094 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5095 function, since declaiming return types involving aliens is
5096 (1) annoyingly messy to do by hand and (2) vital to efficient
5097 compilation of code which calls such functions.
5098 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5099 longer reexported by the SB-EXT package. They're solely useful
5100 for alien code, so it seems more logical that you should get
5101 them from the SB-ALIEN package, not in SB-EXT.
5102 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5103 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5104 features. Instead, the code that they used to control is always
5105 built into the system.
5106 * many other bug fixes
5107 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5108 advantage of the new EVAL-WHEN stuff and to clean them up in
5109 general, and they are now more ANSI-compliant in a number of
5110 ways. Martin Atzmueller is responsible for a lot of this.
5111 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5113 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5114 *** correct ERROR type for various file operations
5115 *** some fixes for Lisp streams
5116 *** DEFMETHOD syntax checking
5117 *** changing old weird representation of debug information as
5118 strings (which, among their other deficiencies, don't transform
5119 correctly when you rename packages, and don't change their
5120 print representation when you change things like *PACKAGE*
5121 and *PRINT-LENGTH*) to symbols and lists of symbols
5122 He also made several improvements and fixed several bugs in DESCRIBE.
5123 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5125 *** misbehavior of WRITE-STRING/WRITE-LINE
5126 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5127 and several other LOOP problems as well
5128 *** DIRECTORY when similar filenames are present
5129 *** DEFGENERIC with :METHOD options
5130 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5131 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5132 *** argument ordering in FIND with :TEST option
5133 *** mishandled package designator argument in APROPOS-LIST
5134 *** various problems in the backquote readmacro
5135 *** a bug in APROPOS
5136 *** probably some others that I'm not describing very well here,
5137 since the CVS log documents them by reference to sbcl-devel
5138 messages, and the SourceForge archives aren't working well.:-(
5139 ** Dan Barlow improved the Alpha port (and is making progress on the
5140 PPC port, for those of you who think different).
5141 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5142 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5143 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5144 continues to work on the SPARC port (for those of you in a position
5145 to look down upon our little PC-compatible boxes from a great height).
5146 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5147 and uses that copy, rather than the current dynamic value, when
5148 it's trying to decide whether to truncate output. Thus e.g.
5149 (let ((*print-lines* 50))
5150 (pprint-logical-block (stream nil)
5152 (let ((*print-lines* 8))
5153 (print (aref possiblybigthings i) stream)))))
5154 should now truncate the logical block only at 50 lines, instead of
5155 often truncating it at 8 lines, as it did before.
5156 * The doc/cmucl/ directory, containing old CMU CL documentation
5157 from the time of the fork, is no longer part of the base system.
5158 SourceForge has shut down its anonymous FTP service, and with it
5159 my original plan for distributing the old CMU CL documentation
5160 there. For now, if you need these files you can download an old
5161 SBCL source release and extract them from it.
5162 * The fasl file version number changed again, for dozens of reasons,
5163 some of which are apparent above.
5165 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5166 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5167 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5168 patch, so that DISASSEMBLE output is much nicer.
5169 * The code in the SB-PROFILE package now seems reasonably stable.
5170 I still haven't decided what the final interface should look like
5171 (I'd like PROFILE to interact cleanly with TRACE, since both
5172 facilities use function encapsulation) but if you have a need
5173 for profiling now, you can probably use it successfully with
5174 the current CMU-CL-style interface.
5175 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5176 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5177 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5178 link now returns the dangling link itself, and for similar
5179 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5180 link itself. (In these cases the old code signalled an error and
5181 looped endlessly, respectively.) Thus, DIRECTORY now works even
5182 in the presence of dangling and cyclic symbolic links.
5183 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5184 is now a supported extension again, since the consensus on
5185 sbcl-devel was that it can be useful for ordinary development
5186 work, not just for debugging SBCL itself.
5187 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5188 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5189 that currently-defined functions might be redefined later with
5190 different return types.
5191 * Hash tables can be printed readably, as inspired by CMU CL code
5192 of Eric Marsden and SBCL code of Martin Atzmueller.
5193 * better error handling in CLOS method combination, thanks to
5194 Martin Atzmueller porting Pierre Mai's CMU CL patches
5195 * more overflow fixes for >16Mbyte I/O buffers
5196 * A bug in READ has been fixed, so that now a single Ctrl-D
5197 character suffices to cause end-of-file on character streams.
5198 In particular, now you only need one Ctrl-D at the command
5199 line (not two) to exit SBCL.
5200 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5202 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5203 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5204 does the right thing.
5205 * The implementation of some type tests, especially for CONDITION
5206 types, is now tidier and maybe faster, due to CMU CL code
5207 originally by Douglas Crosher, ported by Martin Atzmueller.
5208 * Some math functions have been fixed, and there are new
5209 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5210 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5211 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5212 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5213 likely to be built into sbcl-0.7.0.)
5214 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5215 CL, ported to SBCL by Martin Atzmueller)
5216 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5217 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5218 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5219 * There's a new slam.sh hack to shorten the edit/compile/debug
5220 cycle for low-level changes to SBCL itself, and a new
5221 :SB-AFTER-XC-CORE target feature to control the generation of
5222 the after-xc.core file needed by slam.sh.
5223 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5224 COMPILE-FILE is no longer supported, so that now every function
5225 gets an entry point, so that block compilation looks a little
5226 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5227 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5228 returns the number of bytes consed since the system started,
5229 rather than the number consed since the first time the function
5230 was called. (The new definition parallels ANSI functions like
5231 CL:GET-INTERNAL-RUN-TIME.)
5232 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5233 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5234 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5235 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5236 * Fasl file version numbers are now independent of the target CPU,
5237 since historically most system changes which required version
5238 number changes have affected all CPUs equally. Similarly,
5239 the byte fasl file version is now equal to the ordinary
5242 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5243 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5244 is no longer recognized. I apologize for this, because it was
5245 listed in SB-EXT as a supported extension, but I found that
5246 its existing behavior was poorly specified, as well as incorrectly
5247 specified, and it looked like too much of a mess to straighten it
5248 out. I have enough on my hands trying to get ANSI stuff to work..
5249 * many patches ported from CMU CL by Martin Atzmueller, with
5250 half a dozen bug fixes in pretty-printing and the debugger, and
5251 half a dozen others elsewhere
5252 * fixed bug 13: Floating point infinities are now supported again.
5253 They might still be a little bit flaky, but thanks to bug reports
5254 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5255 as flaky as they were.
5256 * The --noprogrammer command line option is now supported. (Its
5257 behavior is slightly different in detail from what the old man
5258 page claimed it would do, but it's still appropriate under the
5259 same circumstances that the man page talks about.)
5260 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5261 are now supported, and enabled by default. Thus, the compiler can
5262 handle many floating point and complex operations much less
5263 inefficiently. (Thus e.g. you can implement a complex FFT
5265 * The compiler now detects type mismatches between DECLAIM FTYPE
5266 and DEFUN better, and implements CHECK-TYPE more correctly, and
5267 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5268 thanks to patches from Martin Atzmueller.
5269 * various fixes to make the cross-compiler more portable to
5270 ANSI-conforming-but-different cross-compilation hosts (notably
5271 Lispworks for Windows, following bug reports from Arthur Lemmens)
5272 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5273 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5274 fixed thanks to Pierre Mai's CMU CL patches.
5275 * fixes to keep the system from overflowing internal counters when
5276 it tries to use i/o buffers larger than 16M bytes
5277 * fixed bug 45a: Various internal functions required to support
5278 complex special functions have been merged from CMU CL sources.
5279 (When I was first setting up SBCL, I misunderstood a compile-time
5280 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5281 * improved support for type intersection and union, fixing bug 12
5282 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5283 more obscure bugs as well
5284 * some steps toward byte-compiling non-performance-critical
5285 parts of the system, courtesy of patches from Martin Atzmueller
5286 * Christophe Rhodes has made some debian packages of sbcl at
5287 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5288 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5289 stable, but are nonetheless usable. When he's ready, I'd be happy
5290 to add them to the SourceForge "File Releases" section. (And if
5291 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5292 * new fasl file format version number (because of changes in
5293 internal representation of (OR ..) types to accommodate the new
5294 support for (AND ..) types, among other things)
5296 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5297 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5299 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5301 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5302 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5303 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5304 * DESCRIBE now works on structure objects again.
5305 * Most function call argument type mismatches are now handled as
5306 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5307 know whether the function will be redefined before the call is
5308 executed. (The compiler could flag local calls with full WARNINGs,
5309 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5310 it doesn't keep track of enough information to know whether calls
5311 are local in this sense.)
5312 * Compiler output is now more verbose, with messages truncated
5313 later than before. (There should be some supported way for users
5314 to override the default verbosity, but I haven't decided how to
5315 provide it yet, so this behavior is still controlled by the internal
5316 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5317 src/compiler/ir1util.lisp.)
5318 * Fasl file format version numbers have increased again, because
5319 support for the Gray streams extension changes the layout of the
5320 system's STREAM objects.
5321 * The Gray subclassable streams extension now works, thanks to a
5322 patch from Martin Atzmueller.
5323 * The full LOAD-FOREIGN extension (not just the primitive
5324 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5325 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5326 but like most other programs, it defaults to copying the Unix
5327 environment from the original process instead of starting the
5328 new process in an empty environment.
5329 * Extensions which manipulate the Unix environment now support
5330 an :ENVIRONMENT keyword option which doesn't smash case or
5331 do other bad things. The CMU-CL-style :ENV option is retained
5332 for porting convenience.
5333 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5334 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5336 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5338 * A patch from Martin Atzmueller seems to have solved the SIGINT
5339 problem, and as far as we know, signal-handling now works cleanly.
5340 (If you find any new bugs, please report them!)
5341 * The system no longer defaults Lisp source file names to types
5342 ".l", ".cl", or ".lsp", but only to ".lisp".
5343 * The compiler no longer uses special default file extensions for
5344 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5345 seems to expect a single default extension for all compiled code,
5346 and there's no compelling reason to try to stretch the standard
5347 to allow two different extensions.) Instead, byte-compiled files
5348 default to the same extension as native-compiled files.
5349 * Fasl file format version numbers have increased again, because
5350 a rearrangement of internal implementation packages made some
5351 dumped symbols in old fasl files unreadable in new cores.
5352 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5353 many fewer weird special cases.
5354 * Bug #17 (differing COMPILE-FILE behavior between logical and
5355 physical pathnames) has been fixed, and some related misbehavior too,
5356 thanks to a patch from Martin Atzmueller.
5357 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5358 by Tim Moore, ported to SBCL by Martin Atzmueller.
5359 * Martin Atzmueller fixed several filesystem-related problems,
5360 including bug #36, in part by porting CMU CL patches, which were
5361 written in part by Paul Werkowski.
5362 * More compiler warnings in src/runtime/ are gone, thanks to
5363 more patches from Martin Atzmueller.
5364 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5367 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5369 * DESCRIBE now works on CONDITION objects.
5370 * The debugger now handles errors which arise when trying to print
5371 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5373 * The build system now uses an additional file, customize-target-features.lisp,
5374 to allow local modifications to the target *FEATURES* list. (The point of
5375 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5376 debugging features enabled, without having to worry about propagating it
5377 into everyone's system when I do a "cvs update".) When no
5378 customize-target-features.lisp file exists, the target *FEATURES* list
5379 should be constructed the same way as before.
5380 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5381 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5382 warn about behavior which is undefined under the ANSI spec. Note: This
5383 is specified by ANSI, but it's not very popular with programmers.
5384 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5385 macro in the SBCL sources for an example of a workaround which you
5386 might use to make portable ANSI-standard code which does what you want.
5387 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5388 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5389 when it's used as a non-toplevel form. (This is required in order
5390 to implement the DEFCONSTANT-EQX macro.)
5391 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5392 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5393 funny things, due to bugs in the implementation of EVAL-WHEN
5394 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5395 non-toplevel DEFCONSTANTs are uncommon.)
5396 * The core file version number and fasl file version number have been
5397 incremented, because the old noncompliant DEFCONSTANT behavior involved
5398 calling functions which no longer exist, and because I also took the
5399 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5400 * fixed bug 1 (error handling before read-eval-print loop starts), and
5401 redid debugger restarts and related debugger commands somewhat while
5403 ** The QUIT debugger command is gone, since it did something
5404 rather different than the SB-EXT:QUIT command, and since it never
5405 worked properly outside the main toplevel read/eval/print loop.
5406 Invoking the new TOPLEVEL restart provides the same functionality.
5407 ** The GO debugger command is also gone, since you can just invoke
5408 the CONTINUE restart directly instead.
5409 ** The TOP debugger command is also gone, since it's redundant with the
5410 FRAME 0 command, and since it interfered with abbreviations for the
5412 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5414 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5415 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5416 some porting work by Martin Atzmueller)
5417 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5418 with a boatload of patches which he ported to SBCL. Now that those
5420 ** The system tries to make sure that its low-priority messages
5421 are prefixed by semicolons, to help people who like to use
5422 syntax highlighting in their ILISP buffer. (This patch
5423 was originally due to Raymond Toy.)
5424 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5425 patches originally written by Raymond Toy.
5426 ** The compiler understands coercion between single-value and
5427 multiple-VALUES type expressions better, getting rid of some very
5428 weird behavior, thanks to patches originally by Robert MacLachlan
5429 and Douglas Crosher.
5430 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5431 lambda lists, thanks to a patch originally by Pierre Mai.
5432 ** The system no longer bogusly warns about "abbreviated type
5434 ** The compiler gets less confused by inlining and RETURN-FROM,
5435 thanks to some patches originally by Tim Moore.
5436 ** The system no longer hangs when dumping circular lists to fasl
5437 files, thanks to a patch originally from Douglas Crosher.
5438 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5439 undefined function error.
5440 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5441 in structure slot initforms) for now, documented workaround instead:-|
5442 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5443 * fixed bug 5: added stubs for various Gray stream functions called
5444 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5445 installed, at least appropriate type errors are generated
5446 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5447 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5448 consistently in DEFMETHOD forms.
5449 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5450 it doesn't seem to affect SBCL after all
5451 * The C runtime system now builds with better optimization and many
5452 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5454 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5456 * The system is now under CVS at SourceForge (instead of the
5457 CVS repository on my home machine).
5458 * The new signal handling code has been tweaked to treat register
5459 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5460 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5461 downstream, e.g. in debug-int.lisp, has implicit dependencies
5462 on the unsignedness of integer representation of machine words,
5463 and that caused the system to bomb out with infinite regress
5464 when trying to recover from type errors involving signed values,
5465 e.g. (BUTLAST '(1 2 3) -1).)
5466 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5467 (This was one of the bugs Peter Van Eynde reported back in July.)
5468 * The system now uses code inspired by Colin Walters' O(N)
5469 implementation of MAP (from the cmucl-imp@cons.org mailing
5470 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5471 inline the MAP operation, and there is more than one
5472 sequence argument to the MAP call (so that it can't just
5473 do ETYPECASE once and for all based on the type of the
5474 single sequence argument). (The old non-inline implementation
5475 of the general M-argument sequence-of-length-N case required
5476 O(M*N*N) time when any of the sequence arguments were LISTs.)
5477 * The QUIT :UNIX-CODE keyword argument has been renamed to
5478 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5479 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5481 * Raymond Wiker's patches to port dynamic loading from Linux to
5482 FreeBSD have been added.
5483 * The BUGS file is now more nearly up to date, thanks in large part
5484 to Martin Atzmueller's review of it.
5485 * The debugger now flushes standard output streams before it begins
5486 its output ("debugger invoked" and so forth).
5487 * The core version number and fasl file version number have both
5488 been incremented, because of incompatible changes in the layout
5490 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5491 used to not be called for a saved Lisp image.)
5492 * Martin Atzmueller's version of a patch to fix a compiler crash,
5493 as posted on sbcl-devel 13 September 2000, has been installed.
5494 * Instead of installing Martin Atzmueller's patch for the
5495 compiler transform for SUBSEQ, I deleted the compiler transform,
5496 and transforms for some similar consing operations.
5497 * A bug in signal handling which kept TRACE from working on OpenBSD
5499 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5500 away by constant folding
5501 * The system now defines its address space constants in one place
5502 (in the Lisp sources), and propagates them automatically elsewhere
5503 (through GENESIS and the sbcl.h file). Therefore, patching the
5504 address map is less unnecessarily tedious and error-prone. The
5505 Lisp names of address space constants have also been systematized.
5506 * CVS tags like dollar-Header-dollar have been removed from
5507 the sources, because they have never saved me trouble and
5508 they've been source of trouble working with patches and other
5509 diff-related operations.
5510 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5511 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5513 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5515 * The system has been ported to OpenBSD.
5516 * The system now compiles with a simple "sh make.sh" on the systems
5517 that it's supported on. I.e., now you no longer need to tweak
5518 text in the target-features.lisp-expr and symlinks in src/runtime/
5519 by hand, the make.sh takes care of it for you.
5520 * The system is no longer so grossly inefficient when compiling code
5521 involving vectors implemented as general (not simple) vectors (VECTOR T),
5522 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5523 which dares to use the various sequence functions on non-simple
5524 vectors, takes less of a performance hit.
5525 * There is now a primitive type predicate VECTOR-T-P
5526 to test for the (VECTOR T) type, so that e.g.
5527 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5528 can now be compiled with some semblance of efficiency. (The old code
5529 turned the type declaration into a full call to %TYPEP at runtime!)
5530 * AREF on (VECTOR T) is still not fast, since it's still compiled
5531 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5532 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5533 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5534 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5535 without making full calls to SUBTYPEP at runtime.
5536 (Some analogous efficiency issues for non-simple vectors specialized to
5537 element types other than T, or for non-simple multidimensional arrays,
5538 have not been addressed. They could almost certainly be handled the
5539 same way if anyone is motivated to do so.)
5540 * The changes in array handling break binary compatibility, so
5541 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5542 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5543 instead of (VALUES T T).
5544 * By following the instructions that Dan Barlow posted to sbcl-devel
5545 on 2 July 2000, I was able to enable primitive dynamic object
5546 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5547 functionality is not implemented (since it calls ld to resolve
5548 library references automatically, requiring RUN-PROGRAM for its
5549 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5550 try to resolve library references) is now supported.
5551 * The system now flushes the standard output streams when it terminates,
5552 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5553 them at several other probably-convenient times, e.g. in each pass of
5554 the toplevel read-eval-print loop, and after evaluating a form given
5555 as an "--eval" command-line option. (These changes were motivated by a
5556 discussion of stream flushing issues on cmucl-imp in August 2000.)
5557 * The source transform for TYPEP of array types no longer assumes
5558 that an array whose element type is a not-yet-defined type
5559 is implemented as an array of T, but instead punts, so that the
5560 type will be interpreted at runtime.
5561 * There is now some support for cross-compiling in make.sh: each of
5562 the phases of make.sh has its own script. (This should be transparent
5563 to people doing ordinary, non-cross-compile builds.)
5564 * Since my laptop doesn't have hundreds of megabytes of memory like
5565 my desktop machine, I became more motivated to do some items on
5566 my to-do list in order to reduce the size of the system a little:
5567 ** Arrange for various needed-only-at-cold-init things to be
5568 uninterned after cold init. To support this, those things have
5569 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5570 symbols with such names are now uninterned after cold init).
5571 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5572 fasl files for cold load.
5573 ** Remove the old compiler structure pooling code (which used to
5574 be conditional on the target feature :SB-ALLOC) completely.
5575 ** Redo the representation of some data in cold init to be more compact.
5576 (I also looked into supporting byte compiled code at bootstrap time,
5577 which would probably reduce the size of the system a lot, but that
5578 looked too complicated, so I punted for now.)
5579 * The maximum signal nesting depth in the src/runtime/ support code has
5580 been reduced from 4096 to 256. (I don't know any reason for the very
5581 large old value. If the new smaller value turns out to break something,
5582 I'll probably just bump it back up.)
5583 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5585 * Many, many bugs reported by Peter Van Eynde have been added to
5586 the BUGS list; some have even been fixed.
5587 * While enabling dynamic object file loading, I tried to make the
5588 code easier to understand, renaming various functions and variables
5589 with less ambiguous names, and changing some function calling
5590 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5591 * While trying to figure out how to do the OpenBSD port, I tried to
5592 clean up some of the code in src/runtime/. In particular, I dropped
5593 support for non-POSIX signal handling, added various comments,
5594 tweaked the code to reduce the number of compilation warnings, and
5595 renamed some files to increase consistency.
5596 * To support the new automatic configuration functionality in make.sh,
5597 the source file target-features.lisp-expr has been replaced with the
5598 source file base-target-features.lisp-expr and the machine-generated
5599 file local-target-features.lisp-expr.
5600 * fixed a stupid quoting error in make.sh so that using CMU CL
5601 "lisp -batch" as cross-compilation host works again
5603 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5605 * DESCRIBE no longer tries to call itself recursively to describe
5606 bound/fbound values, so that it no longer fails on symbols which are
5607 bound to themselves (like keywords, T, and NIL).
5608 * DESCRIBE now works on generic functions.
5609 * The printer now prints less-screwed-up representations of closures
5610 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5611 * A private symbol is used instead of the :EMPTY keyword previously
5612 used to mark empty slots in hash tables. Thus
5613 (DEFVAR *HT* (MAKE-HASH-TABLE))
5614 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5615 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5616 now does what ANSI says that it should. (You can still get
5617 similar noncompliant behavior if bang on the hash table
5618 implementation with all the symbols you get back from
5619 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5620 This breaks binary compatibility, since tests for equality to
5621 :EMPTY are wired into things like the macroexpansion of
5622 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5624 * There's now a minimal placeholder implementation for CL:STEP,
5625 as required by ANSI.
5626 * An obscure bug in the interaction of the normal compiler, the byte
5627 compiler, inlining, and structure predicates has been patched
5628 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5629 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5631 * Missing ordinary arguments in a macro call are now detected even
5632 when the macro lambda list contains &KEY or &REST.
5633 * The debugger no longer complains about encountering the top of the
5634 stack when you type "FRAME 0" to explicitly instruct it to go to
5635 the top of the stack. And it now prints the frame you request even
5636 if it's the current frame (instead of saying "You are here.").
5637 * As specified by ANSI, the system now always prints keywords
5638 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5640 * The default initial SIZE of HASH-TABLEs is now smaller.
5641 * Type information from CLOS class dispatch is now propagated
5642 into DEFMETHOD bodies, so that e.g.
5643 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5645 is now basically equivalent to
5646 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5647 (DECLARE (TYPE SINGLE-FLOAT X))
5649 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5650 operation, without having to do run-time type dispatch.
5651 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5652 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5653 * Since I don't seem to be making big file reorganizations very often
5654 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5655 is overflowing my ability to conveniently back them up), I've finally
5656 checked the system into CVS. (The CVS repository is on my home system,
5657 not at SourceForge -- putting it on SourceForge might come later.)
5658 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5659 high-level GC-NOTIFY-FOO functions send their output. (There's
5660 still very little control of where low-level verbose GC functions
5661 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5662 less than it used to -- the GC-NOTIFY-FOO functions are now under
5663 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5664 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5665 in only one place in the source code, and propagates it automatically
5666 everywhere that it's needed. Thus e.g. when I bump the version from
5667 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5668 * The C source files now include boilerplate legalese and documentation
5669 at the head of each file (just as the Lisp source files already did).
5670 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5671 to his page will be replaced with a link to his new CLiki service.
5673 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5675 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5676 * The build process now looks for GNU make under the default name "gmake",
5677 instead of "make" as it used to. If GNU make is not available as "gmake"
5678 on your system, you can change this default behavior by setting the
5679 GNUMAKE environment variable.
5680 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5681 can build without error under CMU CL.
5683 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5685 * There is now a partial SBCL user manual (with some new text and some
5686 text cribbed from the CMU CL manual).
5687 * The beginnings of a profiler have been added (starting with the
5688 CMU CL profiler and simplifying and cleaning up). Eventually the
5689 main interface should be through the TRACE macro, but for now,
5690 it's still accessed through vaguely CMU-CL-style functions and macros
5691 exported from the package SB-PROFILE.
5692 * Some problems left over from porting CMU CL to the new
5693 cross-compilation bootstrap process have been cleaned up:
5694 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5695 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5696 part when getting rid of the compiler *BACKEND* stuff.)
5697 ** The value of *NULL-TYPE* was screwed up, because it was
5698 being initialized before the type system knew the final
5699 definition of the 'NULL type. This screwed up several key
5700 optimizations in the compiler, causing inefficiency in all sorts
5701 of places. (I found it because I wanted to understand why
5702 GET-INTERNAL-RUN-TIME was consing.)
5703 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5704 PROCLAIM FTYPE information. Unfortunately this broke binary
5705 compatibility again, since now the forms output by DEFGENERIC
5706 to refer to functions which didn't exist in 0.6.3.
5707 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5708 can use the new (as of 0.6.3) transform for SOME into MAP into
5710 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5711 values to (INTEGER 0 1000000), so that the time code will no longer
5712 occasionally get blown up by Linux returning 1000000 microseconds
5713 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5714 its output conform to the ANSI spec. (Alas, this makes its output
5715 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5716 * A full call to MAP NIL with a single sequence argument no longer conses.
5717 * fixes to problems pointed out by Martin Atzmueller:
5718 * The manual page no longer talks about multiprocessing as though
5719 it were currently supported.
5720 * The ILISP support patches have been removed from the distribution,
5721 because as of version 5.10.1, ILISP now supports SBCL without us
5722 having to maintain patches.
5723 * added a modified version of Raymond Toy's recent CMU CL patch for
5724 EQUALP comparison of HASH-TABLE
5726 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5728 * The system still can't cross-compile itself with
5729 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5730 entails), but at least it can compile more of itself that way
5731 than it used to be able to, and various buglets which were uncovered
5732 by trying to cross-compile itself that way have now been fixed.
5733 * This release breaks binary compatibility again. This time
5734 at least I've incremented the FASL file format version to 2, so that the
5735 problem can be detected reliably instead of just causing weird errors.
5736 * various new style warnings:
5737 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5738 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5739 ** using the lexical binding of a variable named in the *FOO* style
5740 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5741 as specified by ANSI.
5742 * *RANDOM-STATE* is no longer automatically initialized from
5743 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5744 default behavior of the system is to repeat its behavior every time
5745 it's run. If you'd like to change this behavior, you can always
5746 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5747 old convention there was no comparably easy way to get the system to
5748 repeat its behavior every time it was run.
5749 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5750 FTYPE declarations has been removed, in favor of their ANSI
5751 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5752 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5753 the types of their sequence arguments can be determined at compile time.
5754 This is done through a new open code expansion for MAP which eliminates
5755 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5756 argument types can be determined at compile time.
5757 * The optimizer now transforms COERCE into an identity operation when it
5758 can prove that the coerced object is already of the correct type. (This
5759 can be a win for machine generated code, including the output of other
5760 optimization transforms, such as the MAP transform above.)
5761 * Credit information has been moved from source file headers into CREDITS.
5762 * Source file headers have been made more standard.
5763 * The CASE macro now compiles without complaining even when it has
5766 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5768 * (Note that the way that the PCL macroexpansions were rewritten
5769 to accommodate the change in DEFGENERIC below breaks binary
5770 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5771 not run under sbcl-0.6.2. Once we get out of alpha releases,
5772 i.e. hit release 1.0.0, we'll probably try to maintain binary
5773 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5774 and sbcl-1.4.4. Until then, however, it might be fairly common
5775 for maintenance releases to break binary compatibility.)
5776 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5778 * The reporting of unhandled signals has been changed to print some
5779 explanatory text as well as the report form. (Previously only
5780 the report form was printed.)
5781 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5782 it defines, so that the compiler no longer issues undefined function
5783 warnings for compiled-but-not-yet-loaded generic functions.
5784 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5785 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5786 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5787 section of the ANSI spec are supported.
5788 * The "" nickname for the "KEYWORD" package has been removed.
5789 The reader still handles symbol tokens which begin with a package marker
5790 as keywords, but it doesn't expose its mechanism for doing so in the
5791 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5792 * The system now issues STYLE-WARNINGs for contradictory TYPE
5793 proclamations. (Warnings for contradictory FTYPE proclamations would
5794 be nice too, but those can't be done usefully unless the type system
5795 is made smarter about FUNCTION types.)
5796 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5797 systematized, so that "*target-*.lisp is supposed to exist only on the
5798 target and imply that there's a related file which exists on the
5799 host, and *host-*.lisp is supposed to exist only on the host and imply
5800 that there's a related file which exists on the target. This involves a
5801 lot of renaming. Hopefully the acute confusion caused by the renaming
5802 will be justified by the reduction in chronic confusion..
5803 ** runtime-type.lisp -> early-target-type.lisp
5804 ** target-type.lisp -> late-target-type.lisp
5805 ** early-host-format.lisp -> early-format.lisp
5806 ** late-host-format.lisp -> late-format.lisp
5807 ** host-error.lisp -> misc-error.lisp
5808 ** early-error.lisp -> early-target-error.lisp
5809 ** late-error.lisp -> late-target-error.lisp
5810 ** host-defboot.lisp -> early-defboot.lisp
5811 ** code/misc.lisp -> code/target-misc.lisp
5812 ** code/host-misc.lisp -> code/misc.lisp
5813 ** code/numbers.lisp -> code/target-numbers.lisp
5814 ** code/early-numbers.lisp -> numbers.lisp
5815 ** early-host-type.lisp -> early-type.lisp
5816 ** late-host-type.lisp -> late-type.lisp
5817 ** host-typep.lisp -> typep.lisp
5818 ** load.lisp -> target-load.lisp
5819 ** host-load.lisp -> load.lisp
5820 ** host-disassem.lisp -> disassem.lisp
5821 ** host-insts.lisp -> insts.lisp
5822 ** byte-comp.lisp -> target-byte-comp.lisp
5823 ** host-byte-comp.lisp -> byte-comp.lisp
5824 ** host-signal.lisp -> signal.lisp
5825 ** host-defstruct.lisp -> defstruct.lisp
5826 ** late-target-type.lisp -> deftypes-for-target.lisp
5827 Furthermore, several other previously target-only files foo.lisp (e.g.
5828 hash-table.lisp and random.lisp) have been split into a target-and-host
5829 foo.lisp file and a target-only target-foo.lisp file, with their key type
5830 definitions in the target-and-host part, so that the cross-compiler will
5831 know more about target types.
5832 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5833 gone away. In their place are various *BACKEND-FOO* variables
5834 corresponding to the slots of the old structure.
5835 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5836 into the target SBCL has been fixed.
5837 * The chill.lisp system for loading cold code into a running SBCL
5839 * Support for the CMU CL "scavenger hook" extension has been removed.
5840 (It was undocumented and unused in the CMU CL sources that SBCL was
5841 derived from, and stale in sbcl-0.6.1.)
5842 * Various errors in the cross-compiler type system were detected
5843 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5844 (enabling various consistency checks). Many of them were fixed,
5845 but some hard problems remain, so the compiler is back to
5846 running without *TYPE-SYSTEM-INITIALIZED* for now.
5847 * As part of the cross-compiler type system cleanup, I implemented
5848 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5849 * I have started adding UNCROSS calls throughout the type system
5850 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5851 on cross-compiler input files will be able to go away, and various
5853 * CONSTANTP now returns true for quoted forms (as explicitly required
5856 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5858 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5859 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5860 (MAKE-LIST -1). In the longer term, it ought to become true
5861 that declarations are assertions even at SAFETY 1. For now, it's not
5862 quite true even at SAFETY 3, but it's at least more nearly true..
5863 (Note that this change seems to increases the size of the system by
5864 O(5%) and to decrease the speed of the compiler by 20% or more.)
5865 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5866 for the problem of printing dozens of lines of distracting information
5867 about low-level system machinery as part of the top stack frame
5868 on entry to the debugger when an undefined function was called.
5869 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5870 is not reset to COMMON-LISP-USER.
5871 * Compilation of stuff related to dyncount.lisp has been made conditional
5872 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5873 smaller. The various dyncount-related symbols have been moved into
5874 a new "SB-DYNCOUNT" package.
5875 * tty-inspect.lisp has been renamed to inspect.lisp.
5876 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5877 feature has gone away. (When we eventually port to other flavors of
5878 libc and/or Unix, we'll try to make the differences between flavors
5879 invisible at the user level.)
5880 * Various other *FEATURES* tags, and/or their associated conditionals,
5881 have been removed if obsolescent, or given better documentation, or
5882 sometimes given more-mnemonic names.
5884 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5886 * tidied up "make.sh" script
5887 * tidied up system directory structure
5888 * better "clean.sh" behavior
5889 * added doc/FOR-CMUCL-DEVELOPERS
5890 * many many small tweaks to output format, e.g. removing possibly-confusing
5891 trailing #\. character in DESCRIBE-INSTANCE
5892 * (EQUALP #\A 'A) no longer signals an error.
5893 * new hashing code, including EQUALP hashing
5894 * tidied up Lisp initialization and toplevel
5895 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5896 * command line argument processing
5897 * added POSIX-GETENV function to deal with Unix-ish environment variables
5898 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5899 terminating SBCL on EOF
5900 * non-verbose GC by default
5901 * There is no more "sbcl" shell script; the sbcl file is now the C
5902 runtime executable (just like CMU CL).
5903 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5905 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5906 symbol and package information as Lisp native symbol and package objects
5907 instead of strings naming symbols and strings naming packages. This way,
5908 whenever packages are renamed (as in warm init), debug information is
5909 transformed along with everything else.
5910 * tweaked the optimization policy declarations which control the building
5911 of SBCL itself. Now, among other things, the system no longer saves
5912 source location debugging information. (This helps two problems at once
5913 by reducing SBCL size and by keeping SBCL from trying to look for its
5914 sources -- which may not exist -- when reporting errors.)
5915 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5916 debugging and testing purposes
5917 * cleaned up printing, making the printer call PRINT-OBJECT for
5918 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5919 methods, giving nearly-ANSI behavior
5920 * converted almost all special variables to use *FOO* naming convention
5921 * deleted PARSE-TIME functionality, since it can be done portably
5922 * moved some files out of cold init into warm init
5923 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5925 * regularized formatting of source files
5926 * added an install.sh script
5927 * fixed ridiculous memory usage of cross-compiler by making
5928 compiler/alloc.lisp not try to do pooling unless it can hook
5929 itself into the GC of the cross-compilation host. Now the system
5930 builds nicely on my old laptop.
5931 * added :SB-ALLOC in target-features.lisp-expr
5932 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5933 was not implemented)
5934 * re-did condition handling and note reporting in the compiler. Notes
5935 are no longer handled by signalling conditions. Style warnings
5936 and warnings are handled more correctly and reported in such a way
5937 that it's easy to find one or the other in your output (so that you
5938 can e.g. figure out which of many problems caused COMPILE-FILE to
5940 * changed the severity of several compiler warnings from full WARNING
5941 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5942 compiler note reporting so that it doesn't use the condition system
5943 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5944 COMPILE-FILE command)
5945 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5946 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5947 no longer supported, since their implementation was deeply intertwingled
5948 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5949 * removed bogus "support" for compiler macros named (SETF FOO), and
5950 removed the compiler macro for SETF INFO (but only after making a fool
5951 of myself on the cmucl-imp mailing list by posting a bogus patch for
5952 DEFINE-COMPILER-MACRO..)
5953 * Compiled files containing forms which have side effects on the Lisp
5954 reader (such as DEFPACKAGE forms) are now handled more correctly.
5955 (Compiler queuing of top level lambdas has been suppressed by setting
5956 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5957 * deleted various currently-unused source files, e.g. gengc.lisp. They
5958 may be added back at some point e.g. when porting to other architectures,
5959 but until they are it's distracting to distribute them and to try to
5961 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5962 there were so many of them they're just distractions, and UNCROSS is
5963 known to be able to handle the current sources
5964 * moved PROFILE functionality into TRACE, so that it will be clear
5965 how the wrapping and unwrapping of functions when you profile them
5966 interacts with the wrapping and unwrapping of functions when you
5967 trace them. (Actually, the functionality isn't there yet, but at least
5968 the interface specification is there. Hopefully, the functionality will
5969 arrive with some future maintenance release.)
5970 * removed host-oops.lisp
5971 * changed signature of QUIT function to allow UNIX-CODE argument
5972 * fixed READ-SEQUENCE bug
5973 * tweaked verbose GC output so that it looks more like the progress
5974 output that ANSI specifies for functions like LOAD
5975 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5976 * added <http://sbcl.sourceforge.com> to the banner information printed by