1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.47:
3 * bug fix: better support for Solaris /bin/sh in sh-based tests.
4 * enhancement: read() and write() have been added to SB-POSIX.
5 * enhancement: types of DEFSTRUCT constructors are proclaimed more
6 accurately, allowing better typechecking of call-sites.
7 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
8 years, is now no longer supported.
9 * optimization: slightly faster ISQRT. (lp#713343)
10 * bug fix: TRACE behaves better when attempting to trace undefined
11 functions. (lp#740717)
13 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
14 * bug fix: fix mach port rights leaks in mach exception handling code on
15 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
17 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
18 * enhancement: redefinition warnings for macros from different files. (lp#434657)
19 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
20 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
21 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
22 processed using EVAL -- now the appropriate toplevel form is reported instead.
23 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
24 declarations. (lp#726331)
25 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
26 that NIL/NULL is excluded from the type.
27 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
29 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
31 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
32 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
33 stack-allocated values out of their dynamic-extent. (lp#310175)
34 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
35 x86-64 builds caused a type-error.
36 * bug fix: calling COMPILE with something else than a lambda-expression as the
37 second argument reports a more sensible error. (lp#718905)
38 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
39 are detected. (lp#520607)
40 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
42 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
43 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
44 methods. (regression from 1.0.45.18)
45 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
46 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
47 * bug fix: several foreign functions accepting string also accepted NIL and
48 consequently caused a memory fault at 0 now signal a type-error instead.
50 * bug fix: under rare circumstances, constraint propagation could rewrite a
51 variable reference to refer to a variable not in scope, causing an error
52 during physical environment analysis when attempting to close over the
54 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
56 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
57 * enhancement: largefile support on Solaris.
58 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
60 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
61 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
63 * optimization: ERROR and CERROR are approximately 5 times faster.
64 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
65 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
66 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
67 up instance creation in those cases.
68 * optimization: arithmetic operations with multiple constant arguments in now
69 have them reduced at compile-time. (lp#676414)
70 * optimization: determining current character position on string-streams for
71 pretty-printing was overly slow.
72 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
73 lifetime analysis to overwrite closed-over variables (lp#681092).
74 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
75 were not handled correctly (lp#713063).
76 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
78 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
80 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
81 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
82 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
83 unintern the wrong symbol with the same name. (lp#693796)
84 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
85 making it possible to restore the initial table if it has been messed up.
88 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
89 * enhancement: ~/ and ~user/ are treated specially in pathnames.
90 Refer to documentation for details.
91 * enhancement: ASDF has been updated to version 2.010.
92 * optimization: mutated closed-over variables that are only accessed by
93 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
94 declared to be DYNAMIC-EXTENT) are stored directly in their containing
95 stack frame, rather than allocating a VALUE-CELL (lp#586103).
96 * optimization: UNWIND-PROTECT cleanup functions are now declared
98 * bug fix: backtracing function with &REST arguments now shows the full
99 argument list. (lp#310173)
100 * bug fix: return types for functions with complex lambda-lists are now
101 derived properly (lp#384892)
102 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
103 long string arguments slowed the compiler down to a crawl.
104 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
105 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
106 in the DEFMETHOD body.
107 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
108 messages, being instead replaced with the corresponding function name.
109 * bug fix: don't derive overly complex unions of numeric types for arithmetic
110 operators. (lp#309448)
112 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
113 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
114 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
115 * enhancement: ALLOCATION-INFORMATION also provides the page the object
117 * enhancement: default dynamic-space size can be configured at build-time
118 without touching source, using the --dynamic-space-size argument to make.sh.
119 * enhancement: DESCRIBE recognizes symbols naming optimization policy
120 qualities, and mentions ALWAYS-BOUND declarations.
121 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
123 * enhancement: ASDF has been updated to 2.009.
124 * enhancement: the system detects known type-erros in calls better,
125 signalling a full warning about violated proclaimed FTYPEs and violations
126 of derived FTYPEs within the same file, including self-calls.
127 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
128 * optimization: constant-folding exploits numeric and character types, in
129 addition member types.
130 * optimization: numeric, character and member types that are inhabited by
131 exactly one value are tested with EQL.
132 * optimization: more conditional branches are eliminated during IR1.
133 Branches are simplified before performing if/if-conversion, and simple
134 equivalent branches (that only read the same constant or variable) are
136 * improvements to the Windows port:
137 ** change: canonical unparsing form for pathname namestrings now uses / as
138 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
139 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
140 on Windows. (thanks to Kalyanov Dmitry)
141 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
143 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
144 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
145 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
146 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
148 * bug fix: interrupts arriving during CL:OPEN caused an error.
149 * bug fix: overeager character buffering could cause input to block
150 spuriously when reading from a pipe (lp#643686)
151 * bug fix: more efficient timer expiry should avoid starvation on systems
152 where number of SIGALRMs per second is restricted. (lp#375515)
153 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
154 * bug fix: compile-times no longer scale linearly with the size of
155 quoted lists in source-code. (lp#654289)
156 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
157 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
158 so badly. (lp#654485)
159 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
160 an error for eg. STRUCTURE. (lp#458015)
161 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
162 (lp#613871, thanks to Roman Marynchak)
163 * bug fix: more reliable &REST list type derivation. (lp#655203)
164 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
165 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
166 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
167 also declared NOTINLINE. (lp#655581)
168 * bug fix: the compiler could attempt to emit constant left shifts of
169 greater value than n-word-bits. (lp#309063)
170 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
171 type information for the function being set. (lp#659220)
172 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
173 containing self-calls were recompiled with a new signature, and failed
174 to warn when a self-call using the old signature was left in. (lp#655126)
175 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
176 :DEFAULT when the default external had character size other than 8 bits.
178 * bug fix: derived types of functions in the same file were implicitly
179 trusted, leading to potential heap corruption when those function were
180 defined incompatibly. (lp#657499)
181 * bug fix: existing ASDF source registries are ignored when building
183 * bug fix: short-form DEFSETF checks that the second argument is a symbol
184 (lp#655824, thanks to Roman Marynchak)
185 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
186 package-lock violation was detected. (lp#660752)
187 * bug fix: the system can store different docstrings for a single function
188 under different names. (lp#661631, regression from 1.0.29.24)
189 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
190 properly. (lp#384801)
191 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
192 of specified length could confuse the type derivation in unsafe code.
194 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
195 fork with multiple Lisp threads running is made on every platform,
196 not just Darwin. (lp#451111)
197 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
198 around when core was saved, which could cause undefined behaviour when the
200 * bug fix: Allow UNTRACE of functions that are no longer defined
201 (lp#667657, thanks to Attila Lendvai)
202 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
203 compile-time warning (lp#664373, thanks to Stas Boukarev)
205 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
206 * incompatible change: FD-STREAMS no longer participate in the serve-event
207 event-loop by default. (lp#316072)
208 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
209 affects streams from CL:OPEN.
210 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
211 default, but this is liable to change: applications needing serve-event
212 for socket streams should explicitly request it using :SERVE-EVENTS T
214 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
216 * enhancement: CLOS effective method functions and defclass slot typechecking
217 function now have debug names for use in backtraces and profiles.
218 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
220 * enhancement: symbols are printed using fully qualified names in several
221 error and warning messages which are often associated with package
222 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
223 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
224 thanks to Andrew Golding)
225 * bug fix: reading /proc files on Linux works. (lp#425199)
226 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
228 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
229 breaking code that tried to write the value of a printer control variable.
230 (lp#581564, thanks to Stas Boukarev)
231 * bug fix: WRITE compiler macro did not handle output stream designators
232 correctly. (lp#598374, thanks to Stas Boukarev)
233 * bug fix: better availability of names of foreign functions in backtraces
234 on Linux. (lp#626962, thanks to Stas Boukarev)
235 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
236 lp#627581, thanks to Josh Elsasser and Jim Wise)
237 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
238 thanks to Josh Elsasser)
239 * bug fix: using aliases for builtin classes as defmethod specializers
240 without adding DEFTYPEs for them works. (lp#618387)
241 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
243 * bug fix: legally dynamic-extent lists and vectors used as
244 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
245 * bug fix: inline-expansion creating references to dead lambda-variables
246 (lp#454681, thanks to Alexey Dejneka)
247 * bug fix: better error message for bogus numerical arguments to RANDOM.
248 (lp#598986, thanks to Stas Boukarev)
249 * bug fix: the compiler occasionally inlined references from incompatible
250 environments occurs. (lp#308951)
251 * bug fix: the compiler threw an error when trying to compile a local
252 function (labels or flet) known to take a specialized complex argument.
253 (not in launchpad, reported by sykopomp in #lispgames)
254 * bug fix: package-locks failed to protect against compile-time effects of
255 DEFUN when the symbol previously had a macro definition. (lp#576637)
256 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
257 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
258 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
259 * bug fix: evaluation in debugger REPL works using the global context when
260 in frames that do not have sufficient debug information.
261 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
263 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
265 * bug fix: interrupt taking longer than the requested period caused SLEEP
266 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
268 changes in sbcl-1.0.42 relative to sbcl-1.0.41
270 ** Cross-compilation host is now specified to make.sh using
271 command-line argument --xc-host=<command> instead of a positional
272 argument. (thanks to Daniel Herring)
273 ** Install location can be specified to make.sh using command-line
274 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
275 * optimization: The default implementation of
276 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
277 * enhancement: Explicit memory barrier operations are now available for use
278 by multithreaded code. See documentation for details.
279 * enhancement: Experimental support for threading on Linux/PPC.
280 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
281 * bug fix: EXPT signals an error if first argument is a zero and second
282 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
283 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
284 (lp#576594, thanks to Roman Marynchak)
285 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
286 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
288 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
289 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
290 cached, leading to many fewer expensive calls to
291 COMPUTE-APPLICABLE-METHODS.
292 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
293 CLASS argument, search for and call an appropriate optimized ctor function
295 * bug fix: WRITE always returns the correct value.
297 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
298 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
299 * bug fix: Name conflicts between symbols passed as arguments to a single
300 call to IMPORT no longer add multiple symbols with the same name to the
301 package (detectable via DO-SYMBOLS).
302 * bug fix: support building without the dlshim on darwin x86 and x86-64
304 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
306 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
307 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
309 * bug fix: linkage-table entries on PPC now no longer overflow their
310 space allocation (potentially causing crashes if they are written out
312 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
313 platforms, preventing the GC from seeing stale pointers on the control
314 stack in subsequent GCs (which would, and does, break invariants).
315 * bug fix: 32-bit unicode external formats now work on big-endian systems.
316 * bug fix: Literal characters with code points greater than about 32767
317 now work on PPC UNICODE builds.
318 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
319 high order bits are explicitly cleared out. In some contrived situations,
320 this could lead to wrong results in mixed real/complex float arithmetic.
321 * bug fix: Fix function/macro redefinition warnings when building with
322 clisp. (lp#576787, thanks to Josh Elsasser)
323 * new platform: experimental support for ppc/openbsd (thanks to Josh
325 * bug fix: Floating-point traps now work on ppc/linux.
327 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
328 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
329 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
330 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
331 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
332 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
333 SB-THREAD:GRAB-MUTEX.
334 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
335 contain additional data structures and tools for concurrent programming;
336 at the moment it contains a lock-free queue, and a lock-free mailbox
338 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
339 GET-MUTEX but takes &key rather than &optional parameters. Also added
340 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
342 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
343 SB-THREAD:WAIT-ON-SEMAPHORE.
344 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
346 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
347 conditions to defer the deadline for forever.
348 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
350 * enhancement: errors from NO-APPLICABLE-METHOD and
351 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
352 generic function call.
353 * enhancement: SB-BSD-SOCKET improvements
354 ** sockets and socket streams now have a more informative printed
355 representation based on the corresponding SOCKET-NAME and
357 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
359 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
360 CL:CLOSE when appropriate, and no longer disassociates the stream
361 from the socket if close failed. (lp#543951)
362 * improvements to the instrumenting profiler
363 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
364 ** optimization: counters no longer use locks for the overflow mode.
365 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
366 incurred an off-by-one miscount.
367 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
368 * enhancement: improved DEFMETHOD pretty-printing.
369 * enhancement: perform range reduction when arguments are too large for
370 x87's transcendentals (instead of returning 0). (lp#327192)
371 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
372 some of CL-PPCRE's macros. (lp#570079)
373 * enhancement: our machine code is slightly less hostile to valgrind on
375 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
376 to Robert Swindells and Aleksej Saushev)
377 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
378 * bug fix: a rare case of startup-time page table corruption.
379 * bug fix: a semaphore with multiple waiters and some of them unwinding due
380 to timeouts could be left in an inconsistent state.
381 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
382 * bug fix: misoptimization of multiplication by one in
383 (SB-C::FLOAT-ACCURACY 0) policies.
384 * bug fix: miscounts in SB-PROFILE.
385 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
386 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
387 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
388 up itself" (March 2010) for further details.
389 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
390 against length of the list if the element is found before the specified
391 END is reached. (thanks to Alec Berryman, lp#554385)
392 * bug fix: errors signalled during package graph modification no longer
393 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
394 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
395 :SB-DOC feature. (lp#552564)
396 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
397 * bug fix: more robust runtime executable path detection. (lp#375549)
398 * bug fix: GCD always returns positive values. (lp#413680)
399 * bug fix: Converting division to multiplication by reciprocal handles
401 * bug fix: We were too eager in eliding range reduction tests on x87.
402 The maximal magnitude is 2^63, not 2^64.
403 * bug fix: Transforms for TRUNCATE don't die when the result is completely
405 * bug fix: Maybe restore buildability on Alpha.
406 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
408 * bug fix: RANDOM-STATE can be printed readably again.
409 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
410 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
411 types) could result in type mismatches during compilation.
413 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
414 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
415 stack frame thrown from.
416 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
417 compiler optimization qualities inside dynamic extent of its body.
418 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
419 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
421 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
422 constraint propgation, allowing better compilation eg. when used to
423 access structures with WITH-SLOTS. (lp#520366)
424 * optimization: the compiler is now more aware of the type of the underlying
425 storage vector for multidimensional simple arrays resulting in better code
426 for accessing such arrays.
427 * optimization: passing NIL as the environment argument to TYPEP no longer
428 inhibits optimizing it. (lp#309788)
429 * optimization: more efficient register usage when handling single-float
430 arguments on x86-64. (thanks to Lutz Euler)
431 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
432 pre-allocated temporary vectors. (lp#496249)
433 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
434 in :INITIAL-CONTENTS. (lp#523612)
435 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
436 functions. (lp#524707)
437 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
438 WITH-SLOTS usages during compilation.
439 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
440 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
441 all x86oid platforms with :UD2-BREAKPOINTS target feature.
442 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
443 instruction (tested on x86oid linux with ud2-breakpoints).
444 * bug fix: slam.sh now works on win32.
445 * bug fix: better differences of numeric types. (lp#309124)
446 * bug fix: arrays declared intersection and union types can have their
447 upgraded element type derived. (lp#316078)
448 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
449 threads started during profiling. (lp#472499)
450 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
452 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
453 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
454 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
455 values instead of signaling an error. (lp#309093)
456 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
458 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
459 declarations (lp#497321)
460 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
461 and failed to detect circular lists (lp#452008)
462 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
464 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
465 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
466 due to it, so that handlers can run.
467 * bug fix: reparsing undefined types if they have become defined since
469 * bug fix: missing &REST type in a proclamation for a function with both
470 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
471 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
472 expanded calls (lp#542174)
473 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
474 than just at toplevel form.
476 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
477 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
478 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
479 but work on type specifiers.
480 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
481 to name a type specifier.
482 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
483 specifier is valid where "valid" basically means "would be accepted as
484 second argument of TYPEP".
485 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
486 returns the function's declared, or derived FTYPE.
487 * new feature: SB-POSIX now supports accessing the d_ino member of
488 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
489 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
490 provide for seeding a RANDOM-STATE object with user-provided data or
491 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
492 attempt to initialize the returned state from the operating system's
493 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
494 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
495 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
496 * bug fix: Fix grammar and style issues for the docstrings of
497 printer-related variables and functions. (Thanks to mon_key; launchpad
499 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
501 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
502 in a row even though a handler defered the deadline long into the
504 * bug fix: A deadline handler was run without interrupts enabled for a
505 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
506 in infinitely spinning, non-killable threads.
507 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
508 before reaching the erring stack frame.
509 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
510 real power. (launchpad bug lp#525949)
511 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
512 GENCGC platforms. (launchpad bug lp#529014)
513 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
514 (launchpad bug lp#525916)
515 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
516 (Thanks to Robert Goldman)
518 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
519 * optimization: ROUND with a single single-float or double-float argument
520 is properly inlined when possible.
521 * optimization: Slightly better code is generated for integer<->float
522 conversions and for single-float<->double-float conversions on x86-64.
523 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
524 code for 32-bit and 64-bit rotations on x86-64.
525 * bug fix: The install script changes the ownership of directories as well
526 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
527 launchpad bug lp#508485)
528 * bug fix: TRUNCATE with a single single-float or double-float argument is
529 properly inlined when possible. (launchpad bug lp#489388)
530 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
531 no longer causes a compiler error on x86 and ppc.
532 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
533 always relative to *READTABLE* rather than the passed argument.
535 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
536 * minor incompatible change: threading support is now enabled by default
538 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
540 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
541 are now caught and reported just like errors during macroexpansion.
542 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
543 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
544 * enhancement: ASDF systems can now depends on SB-QUEUE.
545 * fixes and improvements related to Unicode and external formats:
546 ** bug fix: error handling and restart usage in the ucs-2 external format
548 ** there is now an implementation of the ucs-4 external format.
549 ** the utf-16 and utf-32 external formats are supported.
550 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
551 in the environment. setenv() and unsetenv() are also provided. (reported by
552 Fare Rideau; launchpad bug lp#460455)
553 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
554 loading. This ensures sensible errors for .FASL files from other
555 implementations on case-insensitive filesystems. (reported by Willem
556 Broekema; launchpad bug lp#489417)
557 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
558 Willem Broekema; launchpad bug lp#489698).
559 * bug fix: some minor code rearrangements to reenable warning-free building
560 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
561 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
563 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
566 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
567 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
568 * improvement: support O_LARGEFILE access to files larger than 2GB on
569 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
570 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
571 definitions for methods specializing on the passed class itself.
572 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
573 definitions for methods specializing on the passed class itself, or on
575 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
576 about itself during the build (e.g. for M-? in Slime), if this flag is
577 enabled in customize-target-features.lisp. This will increase the core
578 size by about 5-6mb, though, so it's mostly interesting to SBCL
580 * new feature: various GENCGC tuning parameters have been experimentally
581 documented and exported from SB-EXT. See documentation for details.
582 * fixes and improvements related to Unicode and external formats:
583 ** the Unicode character database has been upgraded to the
584 Unicode 5.2 standard, giving names and properties to a number of new
585 characters, and providing a few extra characters with case
587 ** improvement: restarts for providing replacement input/output on coding
588 errors for fd-stream external formats.
589 ** improvement: where :<encoding> is a keyword corresponding to an
590 external format the system supports, it is now possible to specify
591 (:<encoding> :replacement <character>) as an external format which will
592 automatically substitute <character> on encoding or decoding errors for
593 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
595 ** improvement: the file streams underlying the standard streams (such as
596 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
597 which uses the replacement mechanism to handle encoding errors,
598 preventing various infinite error chains and unrecoverable I/O
600 ** minor incompatible change: the utf-8 external format now correctly
601 refuses to encode Lisp characters in the surrogate range (char-codes
602 between #xd800 and #xdfff).
603 ** fix a typo preventing conversion of strings into octet vectors
604 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
606 ** fix a bug in the octet multibyte handling of decoding errors and the
607 USE-VALUE restart. (launchpad bug lp#314939)
608 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
609 restart on fd-stream decoding errors.
610 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
611 error is near the end of file.
612 ** fix a double-error case in unibyte octet conversions, when the first
613 use of USE-VALUE is ignored.
614 ** fix bugs in handling of undefined code points in unibyte encodings.
615 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
616 streams after an UNREAD-CHAR.
617 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
618 object is allocated in a boxed region of dynamic space.
619 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
620 fork with multiple Lisp threads running is made, instead of going
621 ahead with unpredictable consequences. (reported by Leslie Polzer)
622 * bug fix: uses of slot accessors on specialized method parameters within
623 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
624 error while finalizing the class. This fix may cause classes with slot
625 accessors to be finalized later than previously. (reported by Lars Rune
626 Nøstdal; launchpad bug lp#473699)
627 * bug fix: restore buildability on the MIPS platform. (regression from
628 1.0.30.38, reported by Samium Gromoff)
629 * bug fix: inspecting closures is less likely to fail with a type error.
630 * bug fix: no timer starvation when setting the system clock back.
631 (launchpad bug lp#460283)
632 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
633 standard pprint dispatch table as specified by CLHS.
634 * bug fix: give CLISP a hint about a type declaration to enable it to build
635 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
637 * bug fix: correctly dump literal objects in defaulting forms of arglists.
638 (reported by Attila Lendvai; launchpad bug lp#310132)
639 * bug fix: distinguish in type specifiers between arrays that might be
640 complex and arrays that are definitely complex. (launchpad bug lp#309129)
641 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
642 type. (reported by Levente Mészáros; launchpad bug lp#485972)
643 * bug fix: setting the value of a symbol-macro within a method in the
644 presence of type declarations works properly again. (reported by Iban
645 Hatchondo; launchpad bug lp#485019)
647 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
648 * optimization: faster FIND and POSITION on strings of unknown element type
649 in high SPEED policies. (thanks to Karol Swietlicki)
650 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
652 * improvement: better error signalling for bogus parameter specializer names
653 in DEFMETHOD forms (reported by Pluijzer)
654 * bug fix: DELETE-FILE once again works on logical pathnames (regression
656 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
658 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
659 removes previous default initargs (reported by Lars Rune Nøstdal and
661 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
662 lambda-lists. (reported by Peter Seibel)
663 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
664 correctly when starting from an executable core without saved runtime
665 options (reported by Faré Rideau, thanks to Zach Beane)
666 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
667 an optimization note instead. (reported by Martin Cracauer)
668 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
669 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
670 new process group if it doesn't need to share stdin with the sbcl
671 process. (thanks to Leslie Polzer)
672 * bug fix: SATISFIES could be misoptimized to refer to a local function.
673 (reported by Stanislaw Halik)
675 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
676 * improvement: stack allocation is should now be possible in all nested
677 inlining cases: failure to stack allocate when equivalent code is manually
678 open coded is now considered a bug.
679 * improvements related to Unicode:
680 ** the Unicode character database has been upgraded to the
681 Unicode 5.1 standard, giving names and properties to a number of new
682 characters, and providing a few extra characters with case
684 ** the system now recognizes and produces names for Unicode Hangul
686 ** the EBCDIC-US external-format is now supported for octet operations
687 (as well as for stream operations).
688 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
689 be used to output toplevel compile-time effects into a separate .CFASL
691 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
692 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
694 * optimization: TRUNCATE on known single- and double-floats is upto 25%
696 * optimization: division of floating point numbers by constants uses
697 multiplication by reciprocal when an exact reciprocal exists.
698 * optimization: multiplication of single- and double-floats floats by
699 constant two has been optimized.
700 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
701 sufficient type information is available. (thanks to Leslie Polzer)
702 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
703 known structure objects are as efficient as defstruct generated accessors.
704 * optimization: unused vector creation can now be optimized away.
705 * improvement: ASDF systems can now depends on SB-INTROSPECT.
706 * improvement: a STYLE-WARNING is signalled when a generic function
707 clobbers an earlier FTYPE proclamation.
708 * improvement: the compiler is able to track the effective type of
709 generic function across method addition and removal even in the
710 absence of an explicit DEFGENERIC.
711 * improvement: DESCRIBE now reports on symbols naming undefined
712 but assumed or declared function as well.
713 * improvement: recompilation of systems using SB-GROVEL now works
714 (thanks to Leslie Polzer)
715 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
716 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
718 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
719 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
720 well as user defined declaration names.
721 ** VARIABLE-INFORMATION is now aware of alien variables.
722 * improvement: improved address space layout on OpenBSD (thanks to Josh
724 * improvement: pretty-printing of various Lisp forms has been improved
725 (thanks to Tobias Rittweiler)
726 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
727 unused were deleted in safe code. (reported by John Fremlin)
728 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
730 * bug fix: some out-of-line array predicates were missing (reported by
732 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
734 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
735 (thanks to Larry D'Anna)
736 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
737 as well. (reported by Josh Elsasser)
738 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
739 leading to possible attempts to delete the same file twice. See docstring
740 on DELETE-FILE for details. (reported by John Fremlin)
741 * bug fix: DELETE-FILE once again deletes the file named by the pathname
742 designator argument, rather than its truename. (reported by Luis
744 * bug fix: the low-level debugger had 32-bit assumptions and was missing
745 information about some array types. (thanks to Luis Oliveira)
746 * bug fix: moderately complex combinations of inline expansions could
747 be miscompiled if the result was declared to be dynamic extent.
748 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
749 form (+ <variable> <integer>) were miscompiled under certain
751 * bug fix: in some cases no compiler note about failure to stack allocate
752 was emitted, even if the objects were in fact heap allocated.
753 * bug fix: minor violation of "otherwise inaccessible" rule for stack
754 allocation could cause objects users might reasonably expect to
755 be heap allocated to be stack allocated.
756 * bug fix: DESCRIBE signalled an error for generic functions under
757 certain circumstances. (thanks to Leslie Polzer)
758 * bug fix: Fixed spelling of an error message.
760 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
761 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
762 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
763 of SB-THREAD:THREAD-ERROR-THREAD.
764 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
765 * new feature: docstrings for local and anonymous functions are no longer
766 discarded. (thanks to Leslie Polzer)
767 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
768 values in other threads.
769 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
770 about object allocation.
771 * optimization: division of a real float by a complex float is implemented
772 with a specialised code sequence.
773 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
774 keywords is an order of magnitude faster.
775 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
776 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
777 methods, and similarly for non-standard metaclass classes as long as there
778 are no methods additional on MAKE-INSTANCE.
779 * optimization: more efficient type-checks for FIXNUMs when the value
780 is known to be a signed word on x86 and x86-64.
781 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
782 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
784 * optimization: compiler is smarter about delegating argument type checks to
786 * optimization: several character functions are now compiled somewhat more
787 efficiently. (reported by Lynn Quam)
788 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
789 * improvement: less unsafe constant folding in floating point arithmetic,
790 especially for mixed complex/real -float operations.
791 * optimization: constant double and single floats are stored in native
792 unboxed format on x86[-64].
793 * optimization: smarter code for arithmetic operations with constant floats,
794 complex floats, or integers on x86[-64].
795 * optimization: smarter code for conjugate/multiplication of float complexes
796 and abs/negate of floats on x86-64.
797 * optimization: more efficient complex float and real float operations on
799 * improvement: complex float division is slightly more stable.
800 * improvement: DESCRIBE output has been reworked to be easier to read and
801 contains more pertinent information.
802 * improvement: failure to provide requested stack allocation compiler notes
803 provided in all cases (requested stack allocation not happening without a
804 note being issued is now considered a bug.)
805 * bug fix: SB-POSIX exports the documented types and functions
806 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
807 types. (reported by "abhi")
808 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
809 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
810 (thanks to Paul Khuong)
811 * bug fix: looping around HANDLER-CASE could silently consume stack space
812 on each iteration. (reported by "foobar")
813 * bug fix: better error signalling when calls to functions seeking elements
814 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
815 (reported by Tobias Rittweiler)
816 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
817 directory components now works as it used to. (various prolems reported by
818 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
819 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
820 (reported by Elliot Slaughter, thanks to Stas Boukarev)
821 * bug fix: bogus undefined variable warnings from fopcompiled references to
822 global variables. (thanks to Lars Rune Nøstdal)
823 * bug fix: foreign function names should now appear in backtraces on
824 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
825 * bug fix: SETF compiler macro documentation strings are not discarded
827 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
828 (thanks to Alex Plotnick)
829 * bug fix: SLEEP accepts large integer arguments, truncating them to
830 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
831 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
832 * bug fix: compiler notes for expensive slot type checks could be emitted
833 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
835 changes in sbcl-1.0.29 relative to 1.0.28:
836 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
837 https://bugs.launchpad.net/sbcl
838 Bugs can be reported directly there, or by sending email to
839 sbcl-bugs@lists.sourceforge.net
840 (no subscription required.)
841 * minor incompatible change: under weak type checking policy integer
842 types are weakened less aggressively.
843 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
844 allowed to return, which causes SBCL to quit with exit status 0. Previously
845 if the function returned with a small integer return value, that value
846 was accidentally reused as the exit status.
847 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
848 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
849 :HASH-FUNCTION argument. Refer to user manual for details.
850 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
852 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
853 microseconds since the Unix epoch on all platforms.
854 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
855 allows the compiler to safely elide boundedness checks for special
857 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
858 the symbol, prohibits both lexical and dynamic binding. This is mainly an
859 efficiency measure for threaded platforms, but also valueable in
861 * new feature: UNC pathnames are now understood by the system on Windows.
862 * optimization: the compiler uses a specialized version of FILL when the
863 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
865 * optimization: accesses to potentially non-simple arrays where element type
866 is known are 50% faster.
867 * optimization: compiler now generates faster array typechecking code.
868 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
870 * optimization: multidimensional array accesses in the absence of type
871 information regarding array rank are approximately 10% faster due to
872 open coding of ARRAY-RANK.
873 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
874 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
876 * optimization: result of call to VECTOR can now be stack allocated.
877 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
878 as long as the resulting array is one-dimensional and has a known
879 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
880 length of the list matches the known length of the vector does not
881 allocate the list as an intermediate step. Ditto for VECTOR and simple
883 * optimization: MAKE-ARRAY can now stack allocate in the presence of
884 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
885 known element type, and is known to be simple and one dimensional.
886 * improvement: SBCL now emits a compiler note where stack allocation was
887 requested but could not be provided (not in all cases, unfortunately)
888 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
889 * improvement: pretty-printing loop has been implemented properly. (thanks
890 to Tobias Rittweiler)
891 * documentation: CLOS slot typechecing policy has been documented.
892 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
893 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
894 pointer, leading to memory faults. (thanks to Bart Botta)
895 * bug fix: better floating point exception handling on x86/OpenBSD.
896 (thanks to Josh Elsasser)
897 * bug fix: exit status from QUIT when called under --script was lost
898 (reported by Hubert Kauker)
899 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
900 same implementation of FILL to initialize the array, even if a more
901 efficient one was available (reported by Stas Boukarev, thanks to
903 * bug fix: potential miscompilation of array stack allocation on x86 and
904 x86-64. (reported by Time Tossavainen)
905 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
906 result in their subforms being treated as top level forms. (reported by
908 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
909 than a machine register could leave garbage in the high bits of the
910 result register (bug 316325).
911 * bug fix: disable address space randomization Linux/x86-64 as well,
912 not just x86-64. (reported by Ken Olum)
913 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
914 generate incorrect code.
915 * bug fix: #201; type inference for CONS and ARRAY types could derive
916 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
917 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
918 could not be assigned to or bound with PROGV. (reported by Lorenz
920 * bug fix: the value of CL:- in the inspector was the previous expression
921 evaluated rather than the expression being evaluated.
922 * bug fix: constants can no longer be locally declared special.
923 * bug fix: signals delivered to threads started from foreign land (read:
924 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
925 thread by blocking all signals and resignalling.
926 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
927 from :INITFORM, if any.
929 changes in sbcl-1.0.28 relative to 1.0.27:
930 * a number of bugs in cross-compilation have been fixed, with the ultimate
931 result that building under (at least) clisp should be much more reliable.
932 * minor incompatible changes: echo-streams now propagate unread-char to the
933 underlying input stream, and no longer permit unreading more than one
935 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
936 frames, allowing for instance more reliable backtraces.
937 * improvement: the debugger REPL can now reference lexical variables
938 by name directly for code compiled with (DEBUG 3).
939 * improvement: errors from malformed declarations now have better source
940 paths associated with them. (thanks to Tobias Rittweiler)
941 * optimization: faster local calls on x86/x86-64
942 * bug fix: some error messages for out-of-bound array indexes confused the
943 index and the bound. (thanks to Stas Boukarev)
944 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
946 * bug fix: running regressions tests in shells without OSTYPE set now works.
947 (reported by Harald Hanche-Olsen)
948 * bug fix: more robust static space exhaustion signalling from
949 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
950 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
951 docstring away instead of storing it under names such as (LAMBDA (X)).
952 (reported by Leslie Polzer)
953 * bug fix: timers could go off in the wrong order, be delayed indefinitely
954 (thanks to Ole Arndt for the patch)
955 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
956 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
957 potentially-invalid effective methods in its cache.
958 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
959 instances as well (thanks to Paul Khuong)
960 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
961 SB-POSIX:WAITPID and their C equivalents.
962 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
964 changes in sbcl-1.0.27 relative to 1.0.26:
965 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
966 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
967 * improvement: the system either recovers from stack exhaustion or dies
968 properly as opposed to leaving the user uncertain of whether the handler
969 trampled on some random memory next to the stack or having to rely on
970 --lose-on-corruption (which is still a good idea to use in production
971 because stack exhaustion can happen in signal handlers which will likely
973 * bug fix: fix gc related interrupt handling bug on ppc (regression from
974 1.0.25.37, reported by Harald Hanche-Olsen)
975 * bug fix: work around signal delivery bug in darwin (regression from
976 1.0.25.44, reported by Sidney Markowitz)
977 * bug fix: fix ERROR leaking memory (reported by David Thompson)
979 changes in sbcl-1.0.26 relative to 1.0.25:
980 * incompatible change: an interruption (be it a function passed to
981 INTERRUPT-THREAD or a timer function) runs in an environment where
982 interrupts can be enabled. The interruption can use
983 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
984 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
985 potentially running out of stack. Keep in mind that in the absence
986 of WITHOUT-INTERRUPTS some potentially blocking operation such as
987 acquiring a lock can enable interrupts.
988 * incompatible change: GC-OFF and GC-ON are removed, as they were
989 always unsafe. Use WITHOUT-GCING instead.
990 * new feature: runtime option --disable-ldb
991 * new feature: runtime option --lose-on-corruption to die at the
992 slightest hint of possibly non-recoverable errors: running out of
993 memory, stack, alien stack, binding stack, encountering a memory
994 fault, etc. In the absence of --lose-on-corruption a warning is
996 * enhancement: detect binding stack exhaustion
997 * enhancement: detect alien stack exhaustion on x86/x86-64
998 * improvement: generally more stable and reliable interrupt handling
999 * improvement: there is a per thread interruption queue,
1000 interruptions are executed in order of arrival
1001 * improvement: a repeating timer reschedules itself when the it has
1002 finished, but expiration times are spaced equally. If an
1003 expiration time is in the past it will trigger after a short grace
1004 period that may give a chance to other things to run.
1005 * optimization: slightly faster gc on multithreaded builds
1006 * optimization: faster WITHOUT-GCING
1007 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1008 important locks so that the debugger/handler doesn't produce
1009 recursive errors or deadlock.
1010 * bug fix: real-time signals are not used anymore, so no more
1011 hanging when the system wide real-time signal queue gets full.
1012 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1014 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1015 * bug fix: fix random memory faults related to interrupts on alpha
1016 * bug fix: fix random memory faults related to interrupts on sparc
1017 * bug fix: fix deadlocks related to starting threads
1018 * bug fix: fix deadlines on locks on futex platforms
1019 * bug fix: restore errno in signal handlers
1020 * bug fix: fix deadlocks related to hash tables
1021 * bug fix: fix deadlocks in pcl
1023 changes in sbcl-1.0.25 relative to 1.0.24:
1024 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1025 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1026 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1027 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1028 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1029 better name and does not return values so stale on multiprocessor systems.
1030 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1032 * improvement: unithread builds keep track of MUTEX-VALUE.
1033 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1034 stream anymore making it thread safe to have a concurrent reader and
1035 a writer, for instance, in a pipe.
1036 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1037 arguments, making compiler-macros for SETF-functions able to inspect
1038 their constant arguments.
1039 * improvement: COMPILE-FILE reports times with millisecond accuracy
1040 (thanks to Luis Oliveira)
1041 * optimization: CHAR-CODE type derivation has been improved, making
1042 TYPEP elimination on subtypes of CHARACTER work better. (reported
1043 by Tobias Rittweiler, patch by Paul Khuong)
1044 * bug fix: setting alien structure fields of type struct by value now
1045 computes the right offset for the memory copy.
1046 * bug fix: compilation problem involving inlined calls to aliens with
1047 result type VOID. (reported by Ken Olum)
1048 * bug fix: #235a; sequential inline expasion in different policies no
1049 longer reuses the functional from the previous expansion site.
1050 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1051 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1052 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1053 cause an implied type redefinition. Regression from 1.0.21.29.
1054 * bug fix: sign-extension of small signed return values now works with C
1055 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1056 * improvements to the Windows port:
1057 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1058 Westfold, thanks to Rudi Schlatte)
1060 changes in sbcl-1.0.24 relative to 1.0.23:
1061 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1062 vector of a multidimensional SIMPLE-ARRAY.
1063 * new feature: the system now signals a continuable error if standard
1064 readtable modification is attempted. (thanks to Tobias Rittweiler)
1065 * new feature: DIRECTORY has been extended with a non-standard keyword
1066 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1067 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1068 has been robustified and documented better. (thanks to Robert Goldman)
1069 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1070 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1071 * tradeoff: constant FORMAT control strings are now compiled unless
1072 SPACE > SPEED (previously only when SPEED > SPACE.)
1073 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1075 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1077 * bug fix: lexical type declarations are now correctly reported by
1078 SB-CLTL2. (reported by Larry D'Anna)
1079 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1080 using UTF-8 as external format. (thanks to Luis Oliveira)
1081 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1082 are signalled correctly. (thanks to Stas Boukarev)
1083 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1084 designator. (thanks to Tobias Rittweiler)
1085 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1086 designator, and returns T instead of the function. (thanks to
1088 * bug fix: direct superclasses of STANDARD-CLASS and
1089 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1090 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1091 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1092 when no class with the named slot yet exists no longer causes a
1093 compile-time style-warning.
1094 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1095 in safe code. (reported by Didier Verna)
1096 * bug fix: #430; nested structure constructors can stack allocate.
1097 * bug fix: on some 64-bit platforms dynamic space size was truncated
1098 to #xffff0000 bytes. (reported by Benjamin Lambert)
1099 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1100 REPL unusable. (reported by Daniel Herring)
1101 * bug fix: return values of READ-SEQUENCE did not take :START into
1102 account on file streams, regressions since 1.0.12.22. (reported by
1103 Thomas Russ, patch by Paul Khuong)
1104 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1105 method specializer used to confuse permuation vector optimization.
1106 * bug fix: system inserted bogus implicit type declarations for local
1107 special variables in DEFMETHOD bodies.
1108 * bug fix: #354; duplicated frames in backtraces due to
1109 non-tail-call-optimized XEPs to functions with return type NIL
1111 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1112 initializes structure object slots according to DEFSTRUCT initforms,
1113 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1114 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1115 (reported by Bruno Haible and Stephen Wilson)
1116 * bug fix: #395; fill-pointer output streams used now support
1117 element-type BASE-CHAR as well.
1118 * bug fix: compiler error when attempting to derive return value of
1119 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1121 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1123 * bug fix: Mac OS X binaries should now be portable between Leopard
1126 changes in sbcl-1.0.23 relative to 1.0.22:
1127 * enhancement: when disassembling method functions, disassembly
1128 for the associated fast function is also produced.
1129 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1131 * optimization: printing with *PRINT-PRETTY* true is now more
1132 efficient as long as the object being printed doesn't require
1133 special handling by the pretty printer.
1134 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1135 now interact correctly with type declarations.
1136 * partial bug fix: PCL detects infinite recursion during wrapper
1137 validation. (thanks to Attila Lendvai)
1138 * bug fix: #426; nested function calls are inlined properly.
1139 Previously if FOO was an inline function, in calls of the form
1140 (FOO (FOO ...)) the outer call was not inlined.
1141 * bug fix: long long arguments passed in registers to alien
1142 functions on PowerPC Linux and NetBSD are now handled correctly
1143 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1145 changes in sbcl-1.0.22 relative to 1.0.21:
1146 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1147 for the shared object in the current directory, but passes the native
1148 namestring of the designated pathname to the operation system's shared
1149 object loading function as-it.
1150 * minor incompatible change: --disable-debugger toplevel option now takes
1151 effect before processing of initialization files and --eval or --load
1153 * new feature: new commandline argument: --script, which supports
1154 shebang lines. See documentation for details. (based on work by
1156 * new feature: SAVE-LISP-AND-DIE can save current values of
1157 --dynamic-space-size and --control-stack-size in the executable core,
1158 causing it to skip normal runtime option processing. See documentation
1159 for details. (thanks to Zach Beane)
1160 * enhancement: inoccous calls to EVAL or generic functions dispatching
1161 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1162 * enhancement: the system no longer resignals errors from --load and
1163 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1164 associated with the original error to be lost. (thanks to Ariel
1166 * enhancement: :DONT-SAVE keyword argument has been added to
1167 LOAD-SHARED-OBJECT for controlling interaction with
1168 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1169 the effects of an earlier LOAD-SHARED-OBJECT call.
1170 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1171 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1172 provided. (reported by Cedric St-Jean)
1173 * bug fix: circularity handling in the reader did not treat raw
1174 structure slots correctly. (reported by Cedric St-Jean)
1175 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1176 file descriptors when there were none.
1177 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1178 was broken. (reporteed by Willem Broekema)
1179 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1180 pathnames without a directory.
1181 * bug fix: COMPILE-FILE did not warn about undefined variable
1182 references at toplevel, and LOAD of the resulting fasl did
1183 not signal an error.
1184 * bug fix: functions with non-required arguments used to end up with
1185 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1186 * bug fix: redefining a function with non-required arguments didn't
1187 update the system's knowledge about its call signature properly.
1188 * bug fix: fixed #431; incompatible alien record type redefinitions
1189 are detected and handled. (reported by Neil Haven)
1190 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1191 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1193 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1194 after alien stack frames.
1195 * bug fix: strings passed to mk{s,d}temp lacked null termination
1197 changes in sbcl-1.0.21 relative to 1.0.20:
1198 * new feature: the compiler is able to track the effective type of a
1199 generic function across method addition and removal.
1200 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1201 appropriately typed structure slots without locking.
1202 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1203 information like those gathered by TIME using a programming-friendly
1205 * new feature: TIME reports time taken even if the form performs a
1206 non-local transfer of control.
1207 * enhancement: reduced conservativism on GENCGC platforms: on
1208 average 45% less pages pinned (measured from SBCL self build).
1209 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1210 mutate constant symbols or violate declaimed type of the symbol.
1211 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1212 sleeping on the semaphore in heavily contested semaphores.
1213 * bug fix: semaphores and condition variables were not interrupt
1215 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1216 owned by other threads anymore.
1217 * bug fix: FIND on lists called KEY outside the specified
1218 subsequence. (reported by budden)
1219 * bug fix: LOG doesn't use single-float intermediate results when
1220 given mixed integer and double-float arguments, leading to better
1221 precision. (reported by Bob Felts)
1222 * bug fix: LOG with base zero returned values of inconsistent type.
1224 changes in sbcl-1.0.20 relative to 1.0.19:
1225 * minor incompatible change: OPTIMIZE qualities
1226 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1227 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1228 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1229 * documentation: some slot access efficiency guidelines have been
1230 added to the user manual.
1231 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1232 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1233 as ASSOC and MEMEBER.
1234 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1235 to more efficient EQ-comparison versions more often.
1236 * optimization: enhanced derivation of DOLIST iteration variable type
1238 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1240 * optimization: runtime lookup of function definitions can be
1241 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1242 * optimization: compiler is able to derive the return type of
1243 (AREF (THE STRING X) Y) as being CHARACTER.
1244 * optimization: CLRHASH on empty hash-tables no longer does pointless
1245 work. (thanks to Alec Berryman)
1246 * optimization: REPLACE deftransforms don't punt when :START1 or
1248 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1249 no longer emits a code deletion note. (reported by Andrew
1251 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1252 functions with an odd number of &OPTIONAL arguments, a &REST
1253 argument, and one or more &KEY arguments at the call site.
1254 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1255 arguments appeared at call sites as well.
1256 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1257 READ-LINE &co can no longer read from them afterwards. (reported
1259 * bug fix: fixed #427: unused local aliens no longer cause compiler
1260 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1262 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1263 alien-stack leakage. (reported by Andy Hefner)
1264 * bug fix: PROGV signals an error when an attempt to violate declared
1265 type of a variable or bind a constant is made.
1266 * bug fix: SET signals an error when an attempt to violate declared
1267 type of a variable is made.
1268 * bug fix: restart computation during the execution of a restart
1269 test function no longer causes infinite recursion. (reported by
1271 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1272 signals an error. (thanks to Pierre Mai)
1273 * bug fix: EXPORT left symbol unexported in conflict situations.
1274 (thanks to Michael Weber)
1275 * bug fix: correctly handle name conflicts involving CL:NIL.
1276 (thanks to Michael Weber)
1277 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1278 conflicts arising from USEing package with conflicting symbols
1279 correctly. (thanks to Michael Weber)
1281 changes in sbcl-1.0.19 relative to 1.0.18:
1282 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1283 warnings that go otherwise unhandled will be muffled if they are
1284 of the type that's the value of this variable.
1285 * optimization: stack allocation is slightly more efficient on x86
1287 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1288 where a raw slot always is initialized using the initform whose
1289 type is not know sufficiently well a compile-time are now compiled
1290 correctly. (reported by John Morrison)
1291 * bug fix: compiler no longer makes erronous assumptions in the
1292 presence of non-foldable SATISFIES types.
1293 * bug fix: stack analysis missed cleanups of dynamic-extent
1294 arguments in non-let-converted calls to local functions.
1295 * improvements to the Windows port:
1296 ** adjusted address spaces for building on both Win32 and
1297 Win64. (thanks for John Connors)
1298 * fixed some bugs revealed by Paul Dietz' test suite:
1299 ** interval arithmetic during type derivation used inexact integer
1300 to single-float coercions.
1301 ** arithmetic operations involving large integers and single
1302 floats give the same results in compiled and interpreted code.
1303 ** deriving the result type of COERCE no longer signals an error
1304 if the derived type of the second argument is a MEMBER type
1305 containing invalid type specifiers.
1306 ** ADJOIN with constant NIL as second argument works correctly.
1307 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1309 changes in sbcl-1.0.18 relative to 1.0.17:
1310 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1311 profiles only the current thread.
1312 * minor incompatible change: changes to SYMBOL-VALUE of constants
1313 defined with DEFCONSTANT now signal an error.
1314 * enhancement: SB-SPROF now has support for wallclock profiling,
1315 and is also able to profile specific threads. REPORT output
1316 has also additional sorting options.
1317 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1319 * optimization: structure allocation has been improved
1320 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1321 ** out of line constructors are ~10% faster.
1322 ** inline constructors are ~15% faster.
1323 ** inline constructors are capable of dynamic extent allocation
1324 (generally on x86 and x86-64, in some cases on other platforms
1326 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1328 * optimization: file compiler is now able to coalesce non-circular
1329 lists, non-base strings, and bit-vectors. Additionally, constants
1330 are never referenced through SYMBOL-VALUE at runtime.
1331 * optimization: code defining methods on PRINT-OBJECT (and other
1332 generic functions in the COMMON-LISP package) now loads faster.
1333 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1335 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1336 fasl is now deleted. (reported by Attila Lendvai)
1337 * bug fix: READ-LINE always returned NIL for the last line in files.
1338 (reported by Yoshinori Tahara)
1339 * bug fix: more accurate disassembly annotations of foreign function
1340 calls. (thanks to Andy Hefner)
1341 * bug fix: trimming non-simple strings and non-string string
1342 designators when the there is nothing to trim works properly.
1343 (thanks to James Knight)
1344 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1345 (thanks to Travis Cross)
1346 * fixed some bugs revealed by Paul Dietz' test suite:
1347 ** NIL is a valid function name (regression at 1.0.13.38)
1348 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1349 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1350 fill pointers properly (regression at 1.0.12.23)
1351 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1352 displacement indices properly (regression at 1.0.12.23)
1354 changes in sbcl-1.0.17 relative to 1.0.16:
1355 * temporary regression: user code can no longer allocate closure
1356 variable storage on stack, due to bug 419 without explicitly
1357 requesting it. Please consult sbcl-devel for advice if you need to
1358 use this feature in the meanwhile.
1359 * new feature: runtime argument --control-stack-size can be used to
1360 adjust thread default control stack size.
1361 * enhancement: improved TIME output
1362 ** all times are reported using the measured accuracy (milliseconds
1363 for real and GC times, microseconds for everything else.)
1364 ** processor cycle counts on x86 and x86-64.
1365 ** interpreted forms are counted for both evaluator modes.
1366 ** number of lambdas converted by the compiler is reported.
1367 ** CPU percentage report (computed from real and total run time.)
1368 ** more comprehensive run time reporting, using a condenced format
1369 ** interperted form, lambda, and page fault counts are omitted
1371 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1373 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1374 * optimization: two argument forms of LAST are upto ~10% faster
1375 in normal SPEED policies.
1376 * optimization: NCONC no longer needs to heap cons its &REST list
1377 in normal SPEED policies.
1378 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1379 to Sidney Markowitz)
1380 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1381 regression since 1.0.9.1. (thanks to Eric Marsden)
1382 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1383 since 1.0.15.36. (thanks to Paul Khuong)
1384 * bug fix: LAST when always returned the whole list when given a bignum
1385 as the second argument.
1386 * bug fix: dynamic extent allocation of nested lists and vectors
1387 could leak to otherwise accessible parts.
1388 * bug fix: invalid optimization of heap-allocated alien variable
1390 * bug fix: fasl header checking is less vulnerable to different
1391 platform word lengths.
1392 * bug fix: more correct assembler syntax for GNU binutils
1393 2.18.50.0.4 support. (thanks to Marijn Schouten)
1394 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1396 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1397 declarations) successfully. (reported by Attila Lendvai)
1399 changes in sbcl-1.0.16 relative to 1.0.15:
1400 * minor incompatible change: revert the changes to sb-posix's error
1401 signaling added in 1.0.14.
1402 * minor incompatible change: change PROBE-FILE back to returning
1403 NIL whenever we can't get a truename, as was the case before 1.0.14.
1404 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1405 inherits from ERROR instead of just CONDITION.
1406 * new feature: SB-INTROSPECT can provide source locations for instances
1407 as well. (thanks to Tobias Rittweiler)
1408 * optimization: binding special variables now generates smaller code
1409 on threaded platforms.
1410 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1411 and cases where no :TEST is given but the compiler can infer that
1412 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1413 * optimization: better LOGNOT on fixnums.
1414 * optimization: modular arithmetic for a particular requested width
1415 is implemented using a tagged representation unless a better
1416 representation is available.
1417 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1418 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1419 for wellformedness and returns a specialized vector. (reported by
1420 Francois-Rene Rideau)
1421 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1422 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1423 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1424 unscheduling timer at the same time as another timer fires.
1425 * bug fix: don't reschedule timers for dead threads.
1426 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1427 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1428 bogus errors if select() was interrupted.
1429 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1431 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1432 * enhancement: cleaner backtraces for interactive interrupts, as
1433 well as other cases where the interesting frames used to be
1434 obscured by interrupt handling frames.
1435 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1436 now supported, and tracing a whole package using (TRACE "FOO") now
1437 traces SETF-functions as well.
1438 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1439 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1440 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1441 * unreadably printed representation of hash-tables now includes
1443 * bug fix: partially fixed #188: type propagation from assignments
1444 is now more efficient.
1445 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1446 'DOUBLE-FLOAT) are not flushable.
1447 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1448 full address of the object, and none of the tag bits.
1449 * bug fix: readably printing hash-tables now respects other printer
1450 control variables. (reported by Cedric St-Jean)
1451 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1452 keyword with MAKE-HASH-TABLE.
1453 * bug fix: export SB-POSIX:MKSTEMP.
1454 * bug fix: SORT was not interrupt safe.
1455 * bug fix: XREF accounts for the last node of each basic-block as
1457 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1458 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1459 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1460 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1461 create obsolete instances in the case of redefinition or
1462 obsoletion of a superclass. (thanks to Andy Hefner)
1463 * bug fix: Support for the Alpha architecture has been revived; it had
1464 suffered somewhat from lack of maintenance since sbcl-1.0.
1465 * improvements to the Windows port:
1466 ** The system detects the codepage to use at startup, instead of
1467 using the value from the saved core. (thanks to Kei Suzuki)
1469 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1470 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1471 (see documentation for details.)
1472 * revived support for OpenBSD (contributed by Josh Elsasser)
1473 * partially fixed bug #108: ROOM no longer suffers from occasional
1474 (AVER (SAP= CURRENT END)) failures.
1475 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1476 bodies no longer cause a WARNING to be signalled. (reported by
1478 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1479 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1480 the bug in TRUNCATE.) (reported by Michael Weber)
1481 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1482 no samples. (reported by Andy Hefner)
1483 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1484 no longer appear as (NIL ...) frames in backtraces.
1485 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1486 is now actually exported from SB-EXT as documented. (reported by
1488 * bug fix: sb-aclrepl now correctly understands how to inspect
1489 single-floats on 64-bit platforms where single-floats are not boxed.
1490 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1491 yet been finalized. (reported by Levente Meszaros)
1492 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1493 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1494 SBCL-specific optimize qualities.
1496 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1497 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1498 an executable in the search path, and does so in the child
1499 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1500 been removed; it can be found in the CVS history, for somebody who
1501 needs that search behavior (see the manual).
1502 * minor incompatible change: compiler policy re. weakening type
1503 checks has changed: now type checks are weakened only if SAFETY < 2
1505 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1506 unparsing of directory pathnames as files. Analogously,
1507 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1508 filename to parse into a directory pathname.
1509 * enhancement: implicit generic function creation now signals a
1510 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1511 users can bind handlers for and muffle around calls to LOAD.
1512 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1513 to be used (using the default stream external format), and allows
1514 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1515 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1516 strings and vectors whose element-type or simplicity is not fully
1517 known at compile-time.
1518 * optimization: STRING-TRIM and related functions no longer allocate
1519 a new string when no trimming needs to be performed. These functions
1520 are also faster than before when the input string has been declared
1522 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1523 * optimization: READ-LINE is significantly faster for files containing
1525 * optimization: non-open coded uses of character comparison operators
1526 (e.g. char=) no longer cons when called with more than one parameter
1527 on platforms supporting dynamic-extent allocation.
1528 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1529 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1530 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1532 * bug fix: some sequence functions elided bounds checking when
1534 * bug fix: too liberal weakening of union-type checks when SPEED >
1536 * bug fix: more bogus fixnum declarations in ROOM implementation
1539 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1540 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1541 :SYNCHRONIZED argument, which makes the hash-table safe for
1542 concurrent accesses (but not iteration.) See also:
1543 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1544 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1545 * optimization: CONCATENATE on strings is an order of magnitude faster
1546 in code compiled with (> SPEED SPACE).
1547 * optimization: SUBSEQ is ~50% faster on lists.
1548 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1549 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1550 END is smaller then START.
1551 * bug fix: SB-PROFILE will no longer report extra consing for nested
1552 calls to profiled functions.
1553 * bug fix: ROOM implementation had bogus fixnum declarations which
1554 could cause type-errors when calling ROOM on large images.
1555 * bug fix: if file compilation is aborted, the partial fasl is now
1556 deleted, and COMPILE-FILE returns NIL as the primary value.
1557 * bug fix: number of thread safety issues relating to SBCL's internal
1558 hash-table usage have been fixed.
1559 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1560 be returned from its body when the values were being returned
1561 using unknown-values return convection and the W-P-O was wrapped
1562 inside an UNWIND-PROTECT.
1563 * bug fix: sb-posix should now compile again under Windows, enabling
1564 slime to work again.
1566 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1567 * incompatible change: hash-table accessor functions are no longer
1568 automatically protected by locks. Concurrent accesses on the same hash-table
1569 from multiple threads can give inconsistent results or even corrupt the
1570 hash-table completely. Multi-threaded applications should do their own
1571 locking at the correct granularity. In the current implementation it is
1572 still safe to have multiple readers access the same table, but it's not
1573 guaranteed that this property will be maintained in future releases.
1574 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1575 and will signal an error at runtime.
1576 * enhancement: SB-THREAD package now exports a semaphore interface.
1577 * enhancement: CONS can now stack-allocate on x86 and
1578 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1580 * enhancement: nested lists can now be stack allocated on
1581 platforms providing stack allocation support.
1582 * enhancement: dynamic-extent support has been extended to support
1583 cases where there are multiple possible sources for the stack
1585 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1586 if the mutex is uncontested on Linux.
1587 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1588 as specified by the CLHS. (thanks to Tobias Rittweiler)
1589 * bug fix: NaN comparison now works on x86-64.
1590 * bug fix: CLOSE :ABORT T on a stream with pending output now
1592 * bug fix: instances of non-standard metaclasses using standard
1593 instance structure protocol sometimes missed the slot type checks
1595 * bug fix: known functions can be inlined in high-debug code.
1597 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1598 * minor incompatible change: the MSI installer on Windows no longer
1599 associates .lisp and .fasl files with the installed SBCL.
1600 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1601 on Windows. (thanks to Luis Oliviera)
1602 * new feature: SB-CLTL2 contrib module now implements
1603 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1604 * optimization: scavenging weak pointers is now more efficient,
1605 requiring O(1) instead of O(N) per weak pointer to identify
1606 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1607 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1608 method bodies using constant slot-names when the first argument is
1609 a specializer parameter for the method.
1610 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1611 names, when the class of the instance is a direct instance
1612 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1613 as slow as the constant slot-name case.)
1614 * optimization: member type construction is now O(N) instead
1616 * optimization: UNION and NUNION are now O(N+M) for large
1617 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1619 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1620 now more readable in environments like Slime which display it.
1621 (thanks to Tobias C. Rittweiler)
1622 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1623 was able to infer the correct argument type for the object on which
1624 the CAS operation was being performed.
1625 * bug fix: copy propagation interfered with parallel assignment
1626 semantics in local calls. (reported by Paul Khuong)
1627 * bug fix: the signed modular fixnum shift compiled to wrong code on
1628 x86 and x86-64. (spotted by a slight modification to some of
1631 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1632 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1633 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1634 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1636 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1637 and generic function now print the object identity for anonymous
1638 instances. (thanks to Attila Lendvai)
1639 * enhancement: as an extension to MOP, SBCL now supports SETF of
1640 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1641 (thanks to Attila Lendvai)
1642 * enhancement: sb-cover has an alternate annotation mode which puts
1643 the form annotations at the car of the form, instead of annotating
1644 it completely. The benefit of this mode is that it shows better
1645 which forms were instrumented by the compiler.
1646 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1647 by printer control variables. (reported by Dan Corkill)
1648 * bug fix: system leaked memory when delayed output was performed by
1649 the OS in smaller chunks then expected. (thanks to David Smith)
1650 * bug fix: system leaked memory when file streams were not closed
1652 * bug fix: large objects written to slow streams that were modified
1653 after the write could end up with the modified state written to
1654 the underlying file descriptor.
1655 * bug fix: multiple threads operating in parallel on the same stream
1656 could cause buffer-overflows.
1657 * bug fix: source location information is stored correctly
1658 (broken since 1.0.6). This bug would generally show up as the
1659 Slime debugger highlighting the wrong form when the sldb-show-source
1661 * bug fix: Branch forms are again annotated as branches in the sb-cover
1663 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1664 on x86-64. (reported by Gregory Vanuxem)
1665 * bug fix: EQUALP could return wrong results for structures with raw
1666 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1667 word). (reported by Vjacheslav Fyodorov)
1668 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1671 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1672 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1673 atomic compare-and-swap operations on threaded platforms.
1674 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1675 allows assigning a global minimum value to optimization qualities
1676 (overriding proclamations and declarations).
1677 * enhancement: closed over variables can be stack-allocated on x86
1679 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1681 * optimization: slot definition lookup is now O(1). This speeds up
1682 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1683 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1684 * optimization: ASSOC and MEMBER can now be open-coded for all
1685 combinations of keyword arguments when second argument is constant
1686 and SPEED >= SPACE. In other cases a specialized version is
1688 * bug fix: using obsoleted structure instances with TYPEP and
1689 generic functions now signals a sensible error.
1690 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1691 (reported by Kristoffer Kvello)
1692 * bug fix: backtrace construction is now more careful when making
1693 lisp-objects from pointers on the stack, to avoid creating bogus
1694 objects that can be seen by the GC.
1695 * bug fix: defaulting of values in contexts expecting more than 7
1696 variables now works on x86-64. (reported by Christopher Laux)
1697 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1699 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1700 as the property-list of a symbol.
1701 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1702 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1703 situations requested, are once again file-compileable. (reported
1706 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1707 * MOP improvement: support for user-defined subclasses of
1708 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1709 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1710 the expansion of DEFMETHOD, is responsible for generating a form
1711 which creates a list of specializers when evaluated. Additional
1712 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1713 debugging and introspective support.
1714 * minor incompatible change: the (unsupported) spinlock interface
1715 has changed: free spinlock now has the value NIL, and a held spinlock
1716 has the owning thread as its value.
1717 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1718 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1720 * enhancement: name of a socket-stream is now "a socket" instead of
1721 "a constant string".
1722 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1723 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1724 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1725 for generic functions. (Thanks to Tobias C. Rittweiler)
1726 * optimization: bignum printing speed has been improved by 20-40%
1727 (depending on the bignum size.)
1728 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1730 * bug fix: the cache used by the CLOS to store precomputed effective
1731 methods, slot offsets, and constant return values is now thread and
1733 * bug fix: generic function dispatch function updating is now thread
1734 and interrupt safe (in the sense that the known issues have been
1736 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1737 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1738 * bug fix: asdf systems with dependencies to the SB-POSIX or
1739 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1740 * bug fix: interrupt safety of applicable method computation has been
1743 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1744 * new contrib: sb-cover, an experimental code coverage tool, is included
1745 as a contrib module.
1746 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1747 significantly faster.
1748 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1749 produce more efficient code on x86-64 if the compiler can determine
1750 that (+ INDEX <constant>) does not require a bounds check and FOO
1751 has an element type at least 8 bits wide.
1752 * enhancement: a new, experimental synchronous timeout facility is
1753 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1754 * enhancement: when a symbol name conflict error arises, the
1755 conflicting symbols are always printed with a package prefix.
1756 (thanks to Kevin Reid)
1757 * enhancement: stepping is now once again supported on the SPARC and
1758 MIPS platforms. (It is also now more likely to work on CheneyGC
1760 * enhancement: sb-sprof can now also track and report accurate call
1762 * bug fixes: the treatment of non-standard subclasses of
1763 SB-MOP:SPECIALIZER is more correct.
1764 * incompatible change: PURIFY no longer copies the data from the
1765 dynamic space into the static and read-only spaces on platforms
1766 that use the generational garbage collector
1767 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1769 * bug fix: GC race condition occasionally resulting in crashes with
1770 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1772 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1774 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1775 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1776 * bug fix: an asynchronous interrupt could previously leave the
1777 system running with GC inhibited.
1778 * bug fix: a DECLARE form evaluated at top-level now causes an error
1779 rather than silently (or verbosely) returning NIL.
1780 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1781 result in a error being signalled due to source form lookup errors.
1782 (reported by Peter Graves)
1784 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1785 * incompatible change: removed writer methods for host-ent-name,
1786 host-ent-addresses -- changing the values did not update the DNS
1788 * minor incompatible change: changed experimental JOIN-THREAD interface
1789 * documentation: the manual now lists reader and writer methods
1790 in class slot documentation sections. (thanks to Richard M Kreuter)
1791 * documentation: unwinding from asyncronous events has been
1792 documented as unsafe.
1793 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1794 in multithreaded application code.
1795 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1796 platforms. (thanks to James Anderson for the optimization hint)
1797 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1799 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1800 variants no longer cons.
1801 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1802 their NOT- variants no longer cons.
1803 * optimization: EQUAL hash tables no longer use SXHASH for objects
1804 of all data types, but instead use an EQL hash for types for which
1805 EQUAL is the same as EQL.
1806 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1807 are significantly faster.
1808 * optimization: new STRING-OUTPUT-STREAM implementation is much
1809 faster for large outputs and conses 30% less on average.
1810 * enhancement: XREF information is now collected for references made
1811 to global variables using SYMBOL-VALUE and a constant argument.
1812 * enhancement: SIGINT now causes a specific condition
1813 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1814 * bug fix: FILE-POSITION used to signal an error in some cases where
1815 ANSI requires it to return NIL.
1816 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1817 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1818 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1820 * bug fix: bad type declaration in the CLOS implementation has
1821 been fixed. (reported by James Anderson)
1822 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1823 (thanks to Lutz Euler)
1824 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1825 required by the CLHS. (reported by Samium Gromoff)
1826 * bug fix: dead unbound variable references now signal an error.
1827 (reported by Marco Monteiro)
1828 * bug fix: / with an unused value was being deleted in safe code.
1829 (thanks to Marco Monteiro and Kevin Reid)
1830 * bug fix: number of characters that can be written onto a single
1831 line in a file is unlimited.
1832 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1833 been fixed by inhibiting interrupts for when GC is disabled.
1834 * bug fix: some interrupt safety issues with GETHASH, (SETF
1835 GETHASH), CLRHASH and REMHASH have been fixed.
1836 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1837 specifier no longer causes infinite recursion.
1838 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1839 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1840 * bug fix: an &environment argument with the correct variable information
1841 is passed to macros that are expanded during byte compilation.
1842 (reported by Samium Gromoff)
1843 * bug fix: a logic error was causing the hash function for bignums to
1844 have excessive amounts of collisions. (reported by Faré Rideau)
1845 * bug fix: modifying the contents of an array could change the return
1846 value of SXHASH on that array, which is only allowed for strings
1847 and bit vectors. (bug introduced in 0.9.16)
1848 * improvement: the x86-64/darwin port now passes all tests (except
1849 for the debugger tests) but should still be considered
1850 experimental until this is fixed.
1851 * improvement: a style-warning is signaled for CASE (etc) clauses with
1852 duplicate keys. (thanks to Kevin Reid)
1853 * improvement: macos/x86 and macos/x86-64 now use mach exception
1854 handlers for dealing with illegal instructions (for trapping and
1855 error handling) and memory protection violations (for GC).
1857 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1858 * new platform: experimental support for x86-64/darwin (MacOS).
1859 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1860 and getnameinfo sockets functions are used instead of gethostbyaddr
1861 and gethostbyname, on platforms where the newer functions are available.
1862 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1864 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1865 don't print the startup banner, but behave as if --noinform was passed
1866 as a command line argument. (thanks to Kevin Reid)
1867 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1868 * optimization: code using alien values with undeclared types is much faster.
1869 * optimization: the compiler is now able to open code SEARCH in more cases.
1870 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1871 * bug fix: using standardized COMMON-LISP special variables as loop
1872 variables no longer signals bogus package lock violations. (reported
1874 * bug fix: declaring local loop variables to be of a range-limited type
1875 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1876 (reported by Andras Simon)
1877 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1878 bugs remain on x86-64.)
1879 * bug fix: the #= and ## reader macros now interact reasonably with
1880 funcallable instances.
1881 * bug fix: type-checks for function arguments were compiled using the
1882 compiler policy settings of the wrong lexical environment (in 1.0.2
1884 * bug fix: SHADOW accepts characters as string designators, as required
1885 by the spec (thanks to Eric Marsden)
1886 * bug fix: fixed GC safety issues when foreign functions are called with
1887 non-base strings as arguments
1888 * bug fix: more consistent error output for fatal-compiler-warnings, like
1890 * bug fix: functions with proper names were showing up as NIL in
1891 backtraces (reported by Edi Weitz, regression in 1.0.2)
1893 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1894 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1895 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1896 produce more efficient code on the x86 if the compiler can determine
1897 that (+ INDEX <constant>) does not require a bounds check and FOO
1898 has an element type at least 8 bits wide.
1899 * bug fix: references to undefined variables are handled the same way
1900 in toplevel forms as in the normal compiler
1901 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1903 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1904 (thanks to Jon Buller)
1905 * improvement: faster compilation times for complex functions
1906 * improvement: added readlink support to SB-POSIX (thanks to Richard
1909 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1910 * improvement: experimental support for mach exception handling on
1911 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1913 * improvement: support for GBK external format.
1914 (thanks to Chun Tian (binghe))
1915 * improvement: the debugger now displays variables that have been closed
1916 over, in code compiled with (DEBUG 2) or higher
1917 * improvement: support for executable cores on NetBSD (thanks to
1919 * new feature: added a RESTART-FRAME debugger command
1920 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1921 be used to provide an implementation for FILE-POSITION on Gray streams
1922 (thanks to Eric Marsden)
1923 * new feature: add syslog, openlog and closelog support to SB-POSIX
1924 (thanks to Richard Kreuter)
1925 * optimization: the function call overhead in code compiled with
1926 a high DEBUG optimization setting is significantly
1927 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1928 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1929 (thanks to Tony Martinez)
1930 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1931 evaluated once (reported by Kevin Reid)
1932 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1933 works again (thanks to Kilian Sprotte)
1934 * bug fix: an error is signaled for tagbodies with duplicate tags
1935 (thanks to Stephen Wilson)
1936 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1937 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1938 stack frames from alien callbacks.
1939 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1940 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1941 65k pages (thanks to David Woodhouse)
1942 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1944 changes in sbcl-1.0.1 relative to sbcl-1.0:
1945 * new platform: FreeBSD/x86-64, including support for threading.
1946 * new feature: the compiler stores cross-referencing information
1947 about function calls (who-calls), macroexpansion (who-macroexpands)
1948 and special variables (who-binds, who-sets, who-references) for code
1949 compiled with (< SPACE 3). This information is available through the
1950 sb-introspect contrib.
1951 * new feature: users may subclass SEQUENCE, and have instances of
1952 these classes interoperate with standard Common Lisp functions if
1953 a number of methods are defined. (This feature is experimental
1954 and the interface subject to change based on feedback from SBCL
1955 users and the general community)
1956 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1957 x86/x86-64, rather than the previous fixed depth of 8
1958 * improvement: another pthread back-end of mutex "pthread-futex".
1959 * bug fix: non-ascii command-line arguments are processed correctly
1960 (thanks to Yaroslav Kavenchuk)
1961 * bug fix: non-required arguments were not passed correctly when a method
1962 defined using DEFMETHOD was called from a mop-generated method using
1963 CALL-NEXT-METHOD (reported by Pascal Costanza)
1964 * bug fix: recursion is now permitted in accessors through
1965 SLOT-UNBOUND. (reported by Pascal Costanza)
1966 * bug fix: an error was signaled at startup if the HOME environment
1967 variable was defined, but had an empty value (reported by Peter Van Eynde)
1968 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1969 signal a PROGRAM-ERROR, not a BUG.
1970 * bug fix: SB-POSIX:READDIR works when built with large file support.
1971 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1973 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1974 for better automatic indentation support. (thanks to Matt Pillsbury)
1975 * optimization: loading generic functions no longer takes O(n^2) time,
1976 proportional to the amount of methods in the generic function
1977 (reported by Todd Sabin and Jeremy Brown)
1978 * optimization: the FIND and POSITION family of sequence functions
1979 are significantly faster on arrays whose element types have been
1981 * improvements to the Windows port:
1982 ** Intermittent heap corruption problems have been fixed. (thanks
1983 to Alastair Bridgewater)
1984 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1986 ** Lisp is able to unwind foreign exception frames from alien
1987 callbacks. (thanks to Alastair Bridgewater)
1989 changes in sbcl-1.0 relative to sbcl-0.9.18:
1990 * improvement: experimental support for threading on FreeBSD/x86.
1991 (thanks to NIIMI Satoshi)
1992 * improvement: runtime option --dynamic-space-size can be used
1993 to set the size of the dynamic space reserved on startup.
1994 * improvement: floating point modes in effect are now saved in
1995 core, and restored on startup.
1996 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1997 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1998 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1999 threads are not running after *SAVE-HOOKS* have run.
2000 * improvement: writes to CLOS instance slots are type-checked in code
2001 compiled with (SAFETY 3)
2002 * improvement: floating-point exception handling on FreeBSD (thanks to
2004 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2005 (thanks to Zach Beane)
2006 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2008 * improvement: added support for the Shift-JIS external format.
2009 (contributed by NIIMI Satoshi)
2010 * improvement: callbacks are supported on Linux/PPC. (thanks to
2012 * bug fix: compiler bug triggered by a (non-standard) VALUES
2013 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2014 * bug fix: file compiler no longer confuses validated and already
2015 dumped structurres. (reported by Kaersten Poeck)
2016 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2017 fill-pointer signals a type-error as required. (thanks to
2019 * bug fix: disassemly of funcallable instances works.
2020 * bug fix: single stepping on PPC.
2021 * bug fix: fix thread-safety problems in the type system (generally
2022 manifesting as nonsensical errors like "STRING is a bad type specifier
2023 for sequences" or "The value 1 is not of type FIXNUM")
2024 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2025 (reported by Josip Gracin)
2026 * bug fix: an error is signaled for attempts to displace arrays with
2027 incompatible element types (thanks to Mario Mommer)
2028 * bug fix: more correct handling of wide characters in debug info
2029 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2030 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2031 and don't cause extra consing
2032 * optimization: MAP and MAP-INTO are significantly faster on vectors
2033 whose elements types have been declared.
2034 * Improvements to SB-SPROF:
2035 ** Support for allocation profiling
2036 ** Reduced profiling overhead, especially for long profiling runs
2037 * Improvements to the Windows port:
2038 ** floating point exceptions are now reported correctly.
2039 ** stack exhaustion detection works partially.
2040 ** more accurate GET-INTERNAL-REAL-TIME.
2041 ** better RUN-PROGRAM behaviour in case of errors in the child
2043 ** PROBE-FILE now simplifies pathnames correctly.
2044 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2045 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2046 1st 1970 (although time timezone data will be unreliable).
2047 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2049 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2050 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2051 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2053 * bug fix: two potential GC deadlocks affecting threaded builds.
2054 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2055 returns T (reported by Anton Kazennikov)
2056 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2057 with non-variable places
2058 * bug fix: remove a race condition in the setting of
2059 funcallable-instance functions, this should make threaded CLOS
2060 code more stable against memory faults.
2061 * bug fix: corruption of specials when unbinding is interrupted by an
2062 asynchronous unwind (reported by Hannu Koivisto)
2063 * improvement: the debugger will now also display local variables that
2064 are only used once, for code compiled with a DEBUG optimization quality
2067 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2068 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2069 * incompatible change: External-format support for FFI calls. The
2070 SB-ALIEN:C-STRING no longer implies an ASCII
2071 external-format. Instead the string is subject to external-format
2072 conversion. Additionally return values of type SB-ALIEN:C-STRING
2073 are by default of type (SIMPLE-ARRAY CHARACTER), not
2074 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2075 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2076 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2077 * incompatible change: SB-EXT package no longer contains the
2078 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2079 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2081 * incompatible change: the single-stepper is no longer available
2082 on Alpha, Mips and Sparc platforms.
2083 * minor incompatible change: the direct superclasses of
2084 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2085 not (STANDARD-OBJECT FUNCTION). This makes the
2086 class-precedence-lists of GENERIC-FUNCTION and
2087 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2089 * minor incompatible change: the default stream external format on
2090 non-unicode SBCL is no longer detected from the locale, but is always
2092 * new feature: Add a version of evaluator that uses an interpreter instead
2093 of the compiler. EVAL still uses the compiler by default, to switch it
2094 to use the interpreter, set the value of the variable
2095 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2096 * minor incompatible change: the single-stepper REPL has been merged
2097 with the normal debugger (see the "Stepping" heading of the debugger help
2098 for more details). The debugger command STEP will no longer switch
2099 to the single-stepper REPL.
2100 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2101 for a type now works.
2102 * bug fix: loading of default sysinit file works. (thanks to Leonid
2104 * bug fix: better detection of circularities in the file-compiler.
2105 (reported by Marco Monteiro)
2106 * bug fix: the CL pathname functions now work with files that have
2107 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2108 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2109 systems with Unix98 pty semantics.
2110 * bug fix: ASDF-INSTALL will now work with bsd tar.
2111 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2113 * bug fix: timers expiring in dead threads no longer cause a
2114 type-error (reported by Paul "Nonny Mouse").
2115 * bug fix: thanks to more lightweight single-stepper instrumentation,
2116 code compiled with (DEBUG 3) will compile and execute significantly faster,
2117 and will have more accurate type-inferencing than before
2118 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2119 whose bindings are modified
2120 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2121 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2122 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2123 CL:SOFTWARE-VERSION with proper version
2125 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2126 * feature: implemented the READER-METHOD-CLASS and
2127 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2128 as specified by AMOP.
2129 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2131 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2132 (thanks to Lutz Euler)
2133 * optimization: hashing of general arrays and vectors has been
2134 improved. (reported by Any Fingerhut)
2135 * enhancement: SB-INTROSPECT is now able to find definitions of
2136 profiled functions. (thanks to Troels Henriksen)
2137 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2138 as well, allowing compiler-macros for SETF-functions to expand.
2139 * enhancement: step-instrumentation no longer wraps known
2140 single-value functions with multiple-value context, allowing
2141 better type inference.
2142 * fixed bug #337: use of MAKE-METHOD in method combination now works
2143 even in the presence of user-defined method classes. (reported by
2144 Bruno Haible and Pascal Costanza)
2145 * fixed bug #339(c): if there are applicable methods not part of any
2146 long-form method-combination group, call INVALID-METHOD-ERROR.
2147 (reported by Bruno Haible)
2148 * fixed bug #361: the :FUNCTION initarg in the protocol for
2149 initialization of methods can now be used to override
2150 internally-produced optimized functions. (reported by Bruno
2152 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2153 system-provided lambda expression no longer cause warnings about
2154 unbound #:|pv-table| symbols.
2155 * bug fix: improved the handling of type declarations and the
2156 detection of violations for keyword arguments with non-constant
2158 * bug fix: potentially erronous calls to PATHNAME and
2159 MERGE-PATHNAMES were being flushed in some cases.
2160 (reported by Richard Kreuter)
2161 * bug fix: compiled calls to TYPEP were mishandling obsolete
2162 instances. (reported by James Bielman and Attila Lendvai)
2163 * bug fix: format strings with ~> without matching ~< no longer
2164 trigger an AVER, but signal an understandable error instead.
2165 (reported by Antonio Martinez)
2166 * bug fix: specifying an output-file without a pathname-type for
2167 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2168 of input-file instead of "fasl". (reported by Robert Dodier)
2169 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2170 (reported by James Y Knight).
2171 * bug fix: compiler-macros-function did not consider the environment
2172 argument for shadowing by local functions.
2173 * bug fix: compiler-macros expansion was inhibited by local INLINE
2175 * bug fix: inline expansions of known functions were subject to
2176 step-instrumentation in high debug policies, leading to problems
2177 with type-inference.
2178 * bug fix: compiler failed to differentiate between different CONS
2179 types in some cases.
2180 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2181 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2182 * bug fix: #368: incorrect use of expressed vs. upgraded array
2184 * bug fix: #306a: more precise unions of array types.
2185 * thread-safety improvements:
2186 ** CONDITION-WAIT could return early on Linux, if the thread was
2187 interrupted and subsequently continued with SIGCONT.
2188 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2190 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2191 * added support for the ucs-2 external format. (contributed by Ivan
2193 * minor incompatible change: pretty printing of objects of type
2194 (cons symbol) is, in the default pprint-dispatch-table, now
2195 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2197 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2198 called later in a class's lifetime, possibly as late as when the
2199 first instance of the class is created. Previously,
2200 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2201 class became finalizeable.
2202 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2203 for multibyte external-format streams. (thanks to "vbzoli")
2204 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2205 with :ALLOCATION :CLASS inherited from superclasses of the
2207 * fixed bug: anonymous classes can now be created using the :NAME
2208 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2209 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2210 * fixed bug: core-files saved with :EXECUTABLE T can again be
2211 executed when SBCL_HOME isn't set. (reported by James Knight)
2212 * fixed bug: toplevel LOCALLY forms with declarations could
2213 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2214 * fixed bug: printing from several different threads using different
2215 values of *print-case* could cause invalid output, due to
2216 some internal special variables of the printer not being bound
2217 thread-locally (reported by Max Mikhanosha)
2218 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2219 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2220 (reported by Pascal Costanza)
2221 * fixed bug: FINALIZE-INHERITANCE is called from
2222 REINITIALIZE-INSTANCE on classes when the class has previously
2223 been finalized, as required by AMOP.
2224 * minor code generation optimizations:
2225 ** better register allocation in CLOS dispatching functions
2226 ** overflow detection when coercing signed bytes to fixnums on x86-64
2227 ** is now implemented with one IMUL instruction instead of three shifts
2228 ** more efficient bit-vector access on x86 and x86-64
2229 ** more efficient access to raw structure slots on x86 and x86-64
2230 * fixed some bugs revealed by Paul Dietz' test suite:
2231 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2232 return its argument.
2234 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2235 * feature: thread support on Solaris/x86, and experimental thread support
2237 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2239 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2240 default method for SLOT-UNBOUND.
2241 * minor incompatible change: prevent the user from specializing the
2242 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2243 somewhat counter to the intent of the protocol, I (CSR) think, and
2244 additionally it just doesn't work in SBCL as currently
2245 implemented, thanks to optimizations (that are always valid for
2246 the other three SLOT-VALUEish functions, but not for the setter).
2247 * minor incompatible change: the :SB-LDB feature is now enabled by
2248 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2249 the low-level debugger.
2250 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2251 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2252 down to an SB-SYS:FD-STREAM, allowing direct communication in
2253 more cases. Temporary files and pipes are still used as a fallback
2255 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2256 on the non-reentrant C functions localtime(3) and gmtime(3).
2257 * bug fix: global optimization policy was not visible in LOCALLY and
2259 * bug fix: class objects can be used as specializers in methods.
2260 (reported by Pascal Costanza)
2261 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2262 with a type error. (reported by blitz_ on #lisp)
2263 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2264 failed with a type error. (reported by Pascal Bourguignon)
2265 * bug fix: merging pathnames against defaults with :DIRECTORY
2266 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2267 (reported by James Y Knight)
2268 * bug fix: saving large (>2GB) cores on x86-64 now works
2269 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2270 constant index and a (simple-array (signed-byte 32)) array
2271 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2272 error (patch by Robert J. Macomber)
2273 * feature: TIME now displays the amount of run-time spent in GC
2274 * bug fix: The debugger now does a better job of respecting
2275 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2276 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2277 workaround for bug 403.)
2278 * bug fix: floating point exception handling now works on FreeBSD
2279 (thanks to NIIMI Satoshi)
2280 * fixed some bugs revealed by Paul Dietz' test suite:
2281 ** MISC.641: LET-conversion were not supposed to work in late
2283 * improvements to the Win32/x86 port:
2284 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2285 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2287 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2288 * new feature: source path information is generated for macro-expansion
2289 errors for use in IDE's like Slime (thanks to Helmut Eller)
2290 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2291 * bug fix: compiler does not loop forever on an invalid type in
2293 * improvement: compilation of most CLOS applications is significantly
2295 * optimization: added a limited bytecode compiler for simple toplevel
2296 forms, speeding up compilation and FASL loading
2297 * bug fix: the statistical profiler now properly distinguishes anonymous
2300 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2301 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2302 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2303 into subclasses of the finalized class. Now user calls to
2304 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2305 system return before any subclasses are finalized.
2306 * minor incompatible change: The reader no longer ignores errors
2307 regarding non-existent packages in #+ and #- feature tests.
2308 * new feature: command line options --no-sysinit, --no-userinit to
2309 inhibit loading the corresponding init files
2310 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2311 for sending data through UDP sockets (thanks to François-René Rideau)
2312 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2313 error is signalled instead (thanks to François-René Rideau)
2314 * minor incompatible change: Error signalling behaviour of lexical
2315 operations violating package locks has changed slightly. Refer to
2316 documentation on package locks for details.
2317 * enhancement: EVAL can process IF-expressions without resorting to the
2319 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2320 constant-folded properly due to missing out-of-line functions.
2321 (reported by Mika Pihlajamäki)
2322 * bug fix: LISTEN sometimes returned T even in cases where no data was
2323 immediately available from the stream
2324 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2325 were reversed. (reported by Levente Mészáros)
2326 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2327 when given a vector displaced to an adjustable array. (reported
2329 * bug fix: derivation of float boundaries from numbers outside the
2330 appropriate float range (reported by John Wiseman)
2331 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2333 * bug fix: precomputing cache entries for generic functions with
2334 some subclasses of specializers as yet invalid does not attempt to
2335 fill a cache line with a negative offset. (reported by Levente
2337 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2338 allow condition class objects as arguments to DOCUMENTATION and
2339 (SETF DOCUMENTATION); only find and set documentation for
2340 structure names for the STRUCTURE doc-type. (suggested by Gary
2342 * improvements to the Win32/x86 port:
2343 ** (user-homedir-pathname) and default initialization file
2344 locations now know about the user's "Documents and Settings"
2345 directory (thanks to Yaroslav Kavenchuk)
2346 ** run-program is implemented (thanks to Mike Thomas)
2347 ** sockets support (thanks to Timothy Ritchey)
2348 ** better backtrace support (thanks to Alastair Bridgewater)
2349 ** sb-grovel supported
2350 ** asdf-install and sb-posix work somewhat
2351 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2352 * improvements to the Solaris/x86 port:
2353 ** works on Solaris 11/Solaris Express
2354 ** floating-point exception handling support
2355 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2356 * fixed some bugs revealed by Paul Dietz' test suite:
2357 ** REMOVE-METHOD returns its generic function argument even when
2358 the method is not one of the generic functions' methods.
2359 ** objects declared as MEMBER types can be admissible arguments to
2360 structure accessors.
2361 ** printing characters should simply be printed by the FORMAT ~:C
2363 ** compiler failure when compiling functions with hairy constant
2364 defaults for optional parameters.
2365 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2366 function, which is already optimized.
2368 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2369 * new platform: experimental support for SBCL x86/Darwin, including
2370 MacOS X 10.4.5 on Intel.
2371 * new feature: Unicode character names are now known to the system
2372 (through CHAR-NAME and NAME-CHAR).
2373 * new feature: the filesystem location of SBCL's core file is
2374 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2375 * minor incompatible change: the contrib modules SB-POSIX and
2376 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2377 this change is to make it easier to distribute
2378 location-independent binaries.
2379 * bug fix: as implied by AMOP, standardized classes no longer have
2380 slots named by external symbols of public packages. (reported by
2382 * optimization: calling functions via constant symbols -- as in
2383 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2384 via the function object as in (FUNCALL #'FOO).
2385 * optimization: on x86 and x86-64, the calling convention for the
2386 case of dealing with an unknown number of values has been altered
2387 to be friendlier to the prediction heuristics implemented,
2388 particularly with reference to CALL and RET pairing. (thanks to
2389 Alastair Bridgewater)
2390 * optimization: on x86, the code for access to thread-local symbol
2391 values and binding/unbinding of thread-local symbols is smaller.
2392 (thanks to Alastair Bridgewater)
2393 * enhancement: CONSTANTP is now able to determine constantness of
2394 more complex forms, including calls to constant-foldable standardized
2395 functions and some special forms beyond QUOTE.
2396 * fixed bug: occasional GC crashes on Solaris/x86
2397 * optimization: x86-64 supports stack allocation of results of simple
2398 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2399 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2400 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2401 (thanks to James Knight)
2402 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2403 by the standard (thanks to Stephen Compall)
2405 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2406 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2407 be used for bundling the runtime and the core file into one
2408 executable binary. This feature is not currently supported on all SBCL
2409 platforms. (thanks to James Bielman and NIIMI Satoshi)
2410 * new feature: a generational or ephemeral garbage collector is now
2411 the default on the PowerPC platform (both Linux and Darwin). The
2412 old Cheney (stop and copy) collector is a build-time option.
2413 (thanks to Cyrus Harmon, after Raymond Toy)
2414 * minor incompatible change: the method by which SBCL finds its
2415 contributed modules has changed; it no longer relies on symbolic
2416 links from an $SBCL_HOME/systems directory, but searches directly
2417 in the subdirectories of $SBCL_HOME.
2418 * enhancement: the dynamic heap size on the Linux/PPC platform is
2419 markedly larger, even using the older Cheney garbage collector.
2420 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2421 certain complicated string types. (reported by Gary King)
2422 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2423 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2424 * fixed bug: DOCUMENTATION on structures no longer signals an
2425 error if no structure type of the right name exists. (reported by
2427 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2428 applicable non-standard primary or :AROUND method on
2429 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2430 no longer cause unbound variable errors. (reported by Kevin Reid)
2431 * fixed bug: metacircle resolution in cases where methods have slots
2432 added before the slots from STANDARD-METHOD. (reported by Jean
2434 * fixed bug: the Power PC assembly code for calling into lisp
2435 sometimes computed its return address wrongly (depending on the
2436 15th bit of the address, fixed at link time). This used to
2437 manifest itself in a segmentation violation while building PCL.
2438 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2439 many others over the years)
2440 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2441 the stack pointer (treated as a signed integer) is negative.
2442 (thanks to Peter van Eynde)
2444 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2445 * new platform: experimental support for the Windows operating
2446 system has been added. (thanks to Alastair Bridgewater)
2447 * fixed several bugs in and robustified the PPC FFI (including
2448 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2449 * bug fix: allow non-simple string symbol names (reported by Paul
2451 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2453 * bug fix: saving a core corrupted callbacks on x86/x86-64
2454 * bug fix: closed a loophole in metacircularity detection and
2455 grounding in the PCL implementation of CLOS.
2456 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2457 (reported by tomppa on #lisp)
2458 * bug fix: clear the direction flag on Lisp -> C transitions, as
2459 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2460 (reported by Andrej Grozin and Hendrik Maryns)
2461 * optimization: major improvements to GC efficiency on GENCGC platforms
2462 * optimization: faster implementation of EQUAL
2463 * optimization: emit more efficient opcodes for some common
2464 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2465 * optimization: several other minor code-generation improvements on x86-64
2466 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2468 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2469 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2470 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2471 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2472 by ANSI as a generic function, and for consistency (SETF
2473 GENERIC-FUNCTION-NAME) is treated likewise.
2474 * fixed bug #233.b: make constraint propagation notice when a variable
2475 value is changed after it is referenced but before it is used
2476 * fixed bug #296: no more arbitrary behaviour from filenames with
2477 odd characters as --load arguments. (reported by Adam Warner)
2478 * fixed bug #390: :CHARACTER-SET pathname components now work as
2479 expected. (reported by Tim Daly Jr)
2480 * fixed bug #391: complicated :TYPE intersections in slot
2481 definitions no longer cause an error in PCL internals.
2482 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2483 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2484 returning the number of octets which would be written to the
2485 file-stream. (thanks to Robert J. Macomber)
2486 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2487 arguments to the internal stream functions. (thanks to David
2489 * bug fix: stack exhaustion is now handled on the x86/SunOS
2490 platform. (thanks to Daisuke Homma)
2491 * bug fix: more accurate ROOM results on GENCGC platforms
2492 * optimization: improved type inference for arithmetic-for
2493 index variables in LOOP
2494 * optimization: faster floating-point SQRT on x86-64
2495 * fixed some bugs revealed by Paul Dietz' test suite:
2496 ** DOCUMENTATION returns NIL instead of "" for method combinations
2497 that don't have a docstring
2499 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2500 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2501 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2502 therefore are not customizeable by user code (as seems to be at
2503 least permitted and maybe required by AMOP). As a consolation,
2504 however, the SBCL implementation of these functions now calls
2505 REINITIALIZE-INSTANCE as specified by AMOP.
2506 * bug fix: slot-definition documentation is propagated as per ANSI
2507 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2508 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2509 argument, as do eslotd initialization methods. (from Pascal
2510 Costanza's "Closer" project)
2511 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2512 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2514 * bug fix: it is now possible to have more than one subclass of
2515 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2516 (reported by Bruno Haible, Pascal Costanza and others)
2517 * bug fix: the dependent update protocol now works for generic
2518 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2519 and Pascal Costanza)
2520 * bug fix: condition-class instances corresponding to
2521 DEFINE-CONDITION forms are now created eagerly. (reported by
2522 Kalle Olavi Niemitalo on comp.lang.lisp)
2523 * bug fix: floating point printing is more accurate in some
2524 circumstances. (thanks to Simon Alexander)
2525 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2526 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2527 * bug fix: callbacks on OS X now preserve stack-alignment.
2528 (thanks to Cyrus Harmon)
2529 * enhancement: the x86-64 disassembler is much better at
2530 disassembling SSE instructions. (thanks to Lutz Euler)
2531 * enhancement: CHECK-TYPE on a variable now allows type-inference
2532 (thanks to Vincent Arkesteijn)
2533 * optimization: improved performance of EUC-JP external format.
2534 (thanks to NIIMI Satoshi)
2535 * optimization: performance improvements to IO on file streams of
2536 :ELEMENT-TYPE CHARACTER
2537 * optimization: much faster memory allocation on x86-64
2538 * optimization: faster garbage collections (latency and throughput)
2540 * optimization: faster bignum subtraction and division on x86 and x86-64
2541 (thanks to Lutz Euler)
2542 * optimization: more accurate type-inference for loops that use a
2543 floating point index variable or a negative step.
2545 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2546 * bug fix: add a workaround to SBCL looping infinitely at startup on
2547 Linux kernels with apparently buggy implementations of personality().
2548 (thanks to Svein Ove Aas)
2549 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2550 (thanks to David Lichteblau)
2551 * bug fix: local bindings shadow global symbol macros for
2552 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2553 * optimization: non-open coded uses of numeric comparison operators
2554 (e.g. >) no longer cons when called with more than one parameter
2555 on platforms supporting dynamic-extent allocation.
2556 * enhancement: saving cores with foreign code loaded is now supported
2557 on MIPS/Linux in addition to the previously supported platforms.
2558 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2559 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2560 * bug fix: division by zero in sb-sprof when no samples were collected
2561 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2562 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2563 (thanks to Alexander Kjeldaas)
2564 * new feature: ignoring the return values of destructive functions
2565 like NREVERSE signals a compile-time style-warning.
2566 (thanks to Kevin Reid)
2567 * new feature: the alignment of alien structure fields can be
2568 explicitly specified. (thanks to Cyrus Harmon)
2569 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2570 and dump core on SIGQUIT
2572 ** incompatible change: threads do not inherit values of specials
2573 from their parents (see manual)
2574 ** bug fix: threads stacks belonging to dead threads are freed by the
2575 next exiting thread, no need to gc to collect thread stacks anymore
2576 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2577 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2578 ** bug fix: dynamic variable and thread start related gc lossage
2579 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2581 * fixed some bugs revealed by Paul Dietz' test suite:
2582 ** SUBTYPEP is slightly more accurate on heinously complicated
2583 CONS types where some of the members have uncertain (in the
2584 NIL, NIL sense) type relationships to each other.
2586 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2587 no longer purified unless :PURIFY T is explicitly specified.
2588 ** Non-purified cores are significantly smaller than before
2590 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2591 * new feature: timers based on Zach Beane's excellent timer package
2592 * added support for the following external formats: koi8-u,
2593 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2594 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2595 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2596 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2597 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2598 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2599 * incompatible change: a threaded SBCL will no longer revert to
2600 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2601 * bug fix: interrupts are disabled until startup is complete; no
2602 more sigsegvs when receiving a signal to soon
2603 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2605 * bug fix: add a workaround for the memory randomization features in
2606 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2607 workaround will only be in effect on systems with the proc filesystem
2609 * bug fix: printing objects of type HASH-TABLE signals a
2610 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2612 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2613 have been running for over 50 days. (reported by Gilbert Baumann)
2614 * bug fix: the logic for getting names of functions gets less
2615 confused when confronded with alternate-metaclass
2616 funcallable-instances. (reported by Cyrus Harmon)
2617 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2618 consistent, even on internal alternate-metaclass objects.
2619 * bug fix: flush closure information collected by physical
2620 environment analysis prepass before the main pass. (bug reported
2622 * bug fix: compiler pack phase does not modify a hashtable, which is
2623 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2624 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2625 may be expanded. (reported by Alexander <malishev> on c.l.l)
2626 * bug fix: no more style-warnings when compiling code using LAST
2627 under high-SPEED low-SPACE settings. (reported by David Wallin
2629 * fixed some incompatibilities between SBCL's MOP and the MOP
2631 ** the METAOBJECT class is now implemented;
2632 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2633 STANDARD-OBJECT, as required;
2634 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2635 now compatible (as required by VALIDATE-SUPERCLASS); there
2636 remains a consistency requirement over the presence or absence
2637 of the FUNCTION class in the superclass list of finalized
2638 classes; see the manual for more details;
2639 ** the :AROUND method for COMPUTE-SLOTS on
2640 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2641 requested slot ordering.
2643 ** bug fix: parent thread now can be gc'ed even with a live
2645 ** bug fix: binding a special with PROGV to no value is not
2646 the same as that symbol not having been bound (thanks to
2648 ** bug fix: binding specials is thread safe (thanks to
2650 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2651 and SB-SPROF do not die with 'no handler for signal XX in
2652 interrupt_handle_now(..)' anymore
2653 ** bug fix: WITH-TIMEOUT works with multiple running threads
2654 * fixed some bugs revealed by Paul Dietz' test suite:
2655 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2656 the :method-class keyword argument.
2658 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2659 * new port: the Solaris operating system on x86 processors is now
2660 mostly supported, though some rough edges in the environment
2661 remain. (thanks to Daisuke Homma)
2662 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2663 space for its heap. (thanks to Thiemo Seufer)
2664 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2665 closures. (thanks to Thiemo Seufer)
2666 * minor incompatible change: eof selects abort in the debugger.
2667 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2668 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2670 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2671 deprecated, and will go away in a future revision of SBCL.
2672 * minor incompatible change: GC-ON and GC-OFF are no longer
2673 implemented with a counter, it does not matter how many times gc
2674 is switched on or off
2675 * bug fix: discriminating functions for generic function classes
2676 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2677 make invalid assumptions about method precedence order. (reported
2679 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2680 platforms. (thanks to Thiemo Seufer)
2681 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2682 * bug fix: correct pathname printing with printer escaping is on.
2683 (thanks to Kevin Reid)
2684 * bug fix: complex VOP definitions in "user-space" no longer trigger
2685 package locks. (reported by Zach Beane)
2686 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2687 for funcallable-instance functions, and is no different from
2689 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2690 characters in the current readtable. (reported by Nicholas Neuss)
2691 * bug fix: SUBTYPEP on various CONS types returns more a more
2692 accurate acknowledgment of its certainty.
2693 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2694 lists in some cases. This partially fixes bug 384.
2695 * flush all standard streams before prompting in the REPL and the
2697 * bug fix: signal handling and triggering gc do not conflict
2698 directly anymore, in particular a high frequency sb-sprof does
2699 not prevent gc from running
2700 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2701 approximation for timezone and DST information between the
2702 universal time epoch and the smallest negative 32-bit time_t.
2703 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2704 year 1899 so long as the encoded time is non-negative.
2705 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2706 the correct answer for non-constant rotate amounts when performing
2707 an inline 32-bit rotation.
2709 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2710 there is only one thread in the session
2711 ** bug fix: memory leak for streams created in one thread and
2712 written to in another
2713 ** bug fix: lockup when compiled with gcc4
2714 ** bug fix: race that allows the gc to be triggered when gc is
2716 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2717 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2719 ** bug fix: finished threads are gc'ed properly
2720 * fixed some bugs revealed by Paul Dietz' test suite:
2721 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2722 has arguments with a different set of applicable methods from
2723 the orignal arguments.
2724 ** The type error thrown by MAP now has a correct expected-type
2726 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2727 name a compiled function.
2728 ** Three MISC tests where a large bignum was improperly coerced to
2729 a float that couldn't represent that bignum during type
2730 derivation were fixed.
2731 ** SUBTYPEP can now handle types involving the negation of a
2732 list-form FUNCTION type.
2733 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2734 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2735 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2737 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2738 * New feature: Experimental support for bivalent streams: streams
2739 opened with :element-type :default now allow character and binary
2740 (unsigned-byte 8) I/O
2741 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2742 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2744 * bug fix: no more highly sporadic "couldn't check whether ~S is
2745 readable" when reading a stream and an interrupt hits in the middle
2746 of a select system call
2747 * compiler better recognizes complex arrays (reported by Eduardo
2749 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2750 for variables on SBCL built with linkage-tables. (reported by Luis
2752 * various error reporting improvements.
2753 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2754 (Thanks to Thiemo Seufer)
2755 * bug fix: nested reader invokations work correctly
2756 * bug fix: it is possible to have simultaneous references to foreign
2757 code and foreign data with the same name.
2759 ** added x86-64 support
2760 ** incompatible change: the threading api now works with thread
2761 objects instead of thread ids
2762 ** bug fix: threads are protected from signals and interruption when
2763 starting up or going down
2764 ** bug fix: a race where an exiting thread could lose its stack to gc
2765 ** bug fix: don't halt on infinite error in threads if possible
2766 ** fixed numerous gc deadlocks introduced in the pthread merge
2767 ** bug fix: fixed thread safety issues in read and print
2768 ** bug fix: debugger doesn't hang on session lock if interrupted at
2769 an inappropriate moment
2770 ** bug fix: run-program is now thread safe(r)
2771 ** bug fix: inner with-recursive-lock no longer releases the mutex
2772 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2773 * fixed some bugs revealed by Paul Dietz' test suite:
2774 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2775 EXPECTED-TYPE slots filled.
2776 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2778 ** MAKE-CONDITION accepts classes as type-designators.
2779 ** COMPILE may never return NIL.
2780 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2781 range before calling Unix time functions
2783 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2784 * numerous signal handling fixes to increase stability
2785 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2786 * minor incompatible change: we now correctly canonize default
2787 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2788 as per the MOP, rather than the historical (INITARG INITFUNCTION
2789 INITFORM). (reported by Bruno Haible)
2790 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2791 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2792 for more information.
2793 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2794 pathname is a directory pathname.
2795 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2796 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2798 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2799 :METACLASS argument in addition to a class name. (reported by
2800 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2801 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2802 (reported by Bruno Haible; patch from Gerd Moellmann)
2803 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2805 * bug fix: more cleanups to the floating point exception handling on
2806 x86-64 (thanks to James Knight)
2807 * bug fix: the compiler does not try to constant fold calls of
2808 COERCE and BIT-* functions when they return freshly constructed
2809 objects. (reported by Nikodemus Siivola and Paul Dietz)
2810 * optimization: improved the MIPS versions of generic (in the
2811 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2812 * optimization: direct conversion of (unsigned-byte 32) to floats on
2813 the PowerPC platform.
2814 * optimization: structure instances with raw slots now use less
2815 memory, and probably show better memory locality. (thanks to
2817 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2818 are treated as requests for stack allocation on the x86-64,
2819 Alpha-32, PPC and SPARC platforms.
2820 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2821 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2822 (thanks to Tony Martinez)
2824 ** gcing a dead thread can no longer lead to lockups
2825 ** threads block signals until they are set up properly
2826 ** errno is no longer shared by threads
2827 ** interrupt-thread restores the eflags register on x86
2828 ** fixed some lockups due to gc/thread interaction
2829 * fixed some bugs revealed by Paul Dietz' test suite:
2830 ** invalid dotted lists no longer raise a read error when
2831 *READ-SUPPRESS* is T
2832 ** signal an error if a symbol that names a declaration is used
2833 as the name of a type, or vice versa
2834 ** allow using the (declare (typespec var*)) abbreviation for
2835 (declare (type typespec var*)) with all type specifiers
2836 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2837 ** always return NIL from PPRINT-POP when OBJECT is NIL
2838 ** don't signal errors when pretty-printing malformed LABELS,
2839 FLET or MACROLET forms
2840 ** declarations in a DOLIST body are also in scope for the
2842 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2844 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2847 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2848 * fixed cross-compiler leakages that prevented building a 32-bit
2849 target with a 64-bit host compiler.
2850 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2851 opened with :IF-EXISTS :OVERWRITE.
2852 * fixed bug 281: error for an invalid qualifier in a short-form method
2853 combination method is not signalled until the faulty method is called.
2854 * bug fix: iteration variable type inferrer failed to deal with open
2855 intervals. (reported by Alan Shields)
2856 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2857 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2858 or more runtime options were provided to the sbcl binary.
2859 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2860 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2861 * optimization: there's now a fast-path for fixnum arguments in the
2862 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2863 * optimization: the code generated on x86-64 is more compact thanks
2864 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2865 * bug fix: floating-point exception handling now partly works on
2866 x86-64. (Thanks to James Knight)
2867 * improvement to the MIPS backend from Thiemo Seufer: C-style
2868 64-bit long long arguments and return values to alien functions
2870 * fixed some bugs revealed by Paul Dietz' test suite:
2871 ** the type-error signalled from WARN has a filled-in DATUM slot.
2872 ** the type-error required when a stream is not associated with
2873 a file has the stream as its datum.
2874 ** type-errors on single-floats on x86-64 no longer have
2875 :INVALID-OBJECT as the datum
2876 ** the type-errors signalled for invalid function names now have
2877 a correct expected type
2878 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2879 for structures defined with a :TYPE. Documentation strings for
2880 typed structures are no longer immediately discarded
2881 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2882 broadcast streams and synonym streams. FILE-LENGTH now also works
2883 on broadcast streams.
2885 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2886 * incompatible change: the --noprogrammer option, deprecated since
2887 version 0.7.5, has been removed. Please use the equivalent
2888 --disable-debugger option instead.
2889 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2891 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2892 inoperational for a while now) has been completely removed.
2893 * null lexical environments are now printed as #<NULL-LEXENV>,
2894 significantly reducing the amount of clutter in typical backtraces.
2895 * documentation on weak pointers, finalization, and after GC hooks
2896 has been added to the manual.
2897 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2898 as other specialized array types, is much faster. SUBSEQ and
2899 COPY-SEQ on such arrays have also been sped up.
2900 * optimization: EQL is now more efficient when at least other argument
2901 is known to be of type (OR FIXNUM (NOT NUMBER)).
2902 * fixed bug: the runtime is now less vulnerable to changes in the
2903 size of the SBCL object on OS X, and virtual memory is reserved for
2904 all spaces that need to be at a fixed address.
2905 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2906 * fixed bug: finalizers and after GC hooks that cause consing are now
2908 * fixed bug: compiler error messages and summaries are now printed to
2909 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2910 * fixed inference of the upper bound of an iteration variable.
2911 (reported by Rajat Datta).
2912 * fixed bug 211e: calling local functions with duplicated constant
2913 keyword argument no longer causes a bogus style warning about an
2915 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2916 ftype declaration to be disregarded. (reported by Dave Roberts)
2917 * fixed bug 373: caused by erronous compilation of references to alien
2918 variables in the runtime on ppc/darwin.
2919 * fixed bug 376: CONJUGATE type deriver.
2920 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2921 (reported by Baughn on #lisp)
2922 * a cross-compiler bug on non-x86 platforms has been identified and
2923 fixed. (thanks to Bruno Haible)
2924 * improvements to the MIPS runtime code for increased stability.
2925 (thanks to Thiemo Seufer)
2926 * increased the maximimum compact environment size to allow
2927 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2928 * partial workaround for bug 135: don't name the function we're
2929 calling for hairy cases of EVAL, so as not to accumulate one environment
2930 entry per call to EVAL. (reported by Kevin Reid)
2931 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2932 * optimization: type testing for non-vector arrays should be faster.
2933 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2935 * bug fix: setting 31st element of a bit vector to zero did not work
2937 * bug fix: redefining a class definition which failed due to a
2938 previous accessor / function clash now works (but see BUGS entry
2939 #380 for more problems in this area). (thanks to Zach Beane)
2940 * the long form of DEFINE-METHOD-COMBINATION disables method group
2941 checking when given a single method group with pattern *. (thanks
2943 * on x86 compiler supports stack allocation of results of simple
2944 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2945 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2946 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2947 * fixed some bugs related to Unicode integration:
2948 ** the restarts for recovering from input and output encoding
2949 errors only appear when there is in fact such an error to
2951 * fixed some bugs revealed by Paul Dietz' test suite:
2952 ** MISC.549 and similar: late transformation of unsafe type
2953 assertions into derived types caused unexpected code
2955 ** SCALE-FLOAT type deriver is less wrong.
2956 ** type derivers for EXP, LOG and similar functions compute result
2957 types for complex arguments better.
2958 ** (MISC.563) CONJUGATE type deriver works for very restricted
2960 ** out-of-line type testers for character strings are available.
2961 ** EQUAL compiler transform understands specialness of objects
2963 ** accessing double-floats stored on the stack now works on x86-64.
2964 ** debugger internals could sometimes create invalid lispobjs,
2965 resulting in GC crashes.
2966 ** MISC.548: type check weakening can convert required type into
2968 ** initialization forms for bindings are not in scope of free special
2971 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2972 * incompatible change: thread support for non-NPTL systems has
2973 been removed - locking is buggy and unreliable. A threaded
2974 SBCL build will now warn at startup and refuse to create
2975 new threads, unless futex support is detected in the kernel
2976 * incompatible change: the top level REPL now has only an ABORT
2977 restart associated with it, not TOPLEVEL and ABORT as it used to.
2978 TOP and TOPLEVEL are now available as debugger commands for
2979 returning to the top level.
2980 * incompatible change: forms evaluated in the REPL now use the
2981 global optimization policy.
2982 * incompatible change: user- and system-initialization files are
2983 no longer processed with LOAD, but by READ and EVAL; hence the
2984 global optimization policy, startup package, readtable, etc,
2986 * The .fasl file format number has been incremented because of
2987 various incompatible changes.
2988 * internal entry point details and argument counts no longer appear
2989 in backtraces unless explicitly requested by setting
2990 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2991 * built-in and standard functions no longer have names like "top
2992 level local call to FOO".
2993 * fixed bug 32: functions defined in non-null lexical environments
2994 now have more legible printed representation
2995 * fixed bug 33: functions defined in non-null lexical environemnts
2996 are now more amenable to inspection by INSPECT.
2997 * workaround for bug 354: XEPs no longer appear in backtraces unless
2998 explicitly requested.
2999 * fixed bug: receiving the signal which results from attempting to
3000 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3001 SIGBUS on other *BSDs) on architectures where the C stack is also
3002 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3003 to debugger confusion or wild instability. (reported by Cheuksan
3005 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3006 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3007 (reported by Lutz Euler)
3008 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3009 compiled code. (reported by Paul Dietz)
3010 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3011 specialized parameter to a method to something that is not TYPEP
3012 the specializer is now possible.
3013 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3014 face of package deletion.
3015 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3016 pathname. (reported by David Tolpin on c.l.l)
3017 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3018 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3019 STRING-STREAM and FILE-STREAM, respectively.
3020 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3021 than previously; in addition, its test suite is now run on build.
3022 (thanks to Luke Gorrie)
3023 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3024 * optimization: added a immediate representation for single-floats
3026 * fixed some bugs revealed by Paul Dietz' test suite:
3027 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3028 ** attempting to create a package with a colliding nickname causes
3029 correctable errors to be signalled.
3030 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3031 ** several x86-64 backend bugs related to sign-extension of immediate
3034 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3035 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3036 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3038 * fixed loading of multiply forward-referenced layouts.
3039 (thanks to Cheuksan Wang)
3040 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3041 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3042 (see COMPILE-FILE documentation for details of :PRINT option)
3043 * fixed bugs 19 and 317: fixed-format floating point printing is
3044 more accurate. This also fixes a bug reported by Adam Warner
3045 related to the ~@F format directive.
3046 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3048 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3049 dispatch table if the from-char is a dispatch macro character.
3050 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3051 by the wordsize no longer ignore the last word. (reported by Lutz
3053 * fixed bug in type checking of dynamic-extent variables. (reported
3055 * optimization: sequence traversal functions use their freedom to
3056 coerce function designators to functions.
3057 * optimization: code with many calls to CLOS methods specialized on
3058 CLOS classes has had redundant type checks removed.
3059 * optimization: added declarations to speed up operations that access
3060 the internal character database (for example STRING-UPCASE)
3061 * optimization: comparison operations between floats and sufficiently small
3062 fixnums no longer create extra rationals
3063 * fixed some bugs related to Unicode integration:
3064 ** portions of multibyte characters at the end of buffers for
3065 character-based file input are correctly transferred to the
3066 start of the buffer at the next read.
3067 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3068 passing it through to OPEN.
3069 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3070 argument given to internal calls to OPEN.
3071 ** the built-in comment readers (introduced by character sequences
3072 ";" and "#|") are more forgiving to encoding errors; they will
3073 STYLE-WARN and then attempt to resync the stream at a character
3074 boundary. (thanks to Teemu Kalvas)
3075 * fixed some bugs in the x86-64 port:
3076 ** Negative short int return values from c-calls are sign-extended
3078 ** The stack is aligned to 16-bytes for c-calls, as required by
3079 the ABI. (thanks to Cheuksan Wang)
3080 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3081 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3082 for enums. (thanks to Vincent Arkesteijn)
3083 ** Multiple small optimizations and bugfixes for floating point
3085 * fixed some bugs revealed by Paul Dietz' test suite:
3086 ** Space, Tab, Linefeed, Return and Page have the invalid
3087 secondary constituent character trait.
3088 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3090 ** WITH-INPUT-FROM-STRING should only update the index place on
3092 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3093 works more reliably.
3094 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3095 with one-dimensional arrays with fill pointers.
3096 ** TYPE-OF failed on a complex with an integer realpart and a
3098 ** compiler failure during type inference for the code of form
3099 (IF (EQL X (THE ...)) ...) (MISC.535).
3101 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3102 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3103 platform. The port supports 61-bit fixnums, large memory spaces
3104 and reloading shared object files.
3105 * enhancement: saving cores with foreign code loaded is now
3106 supported on ppc/Darwin in addition to the previously supported
3108 * enhancement: the statistical profiler now walks deeper into the
3109 call stack for more meaningful call-graphs and accrued time
3110 reports (x86/x86-64 only). It also now reports time spent in
3112 * enhancement: it is now possible to trace most individual methods
3113 of a generic function in addition to tracing the generic function
3115 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3117 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3118 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3119 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3120 produces an error. (thanks to Vincent Arkesteijn)
3121 * bug fix: NAMESTRING on pathnames with :WILD components in their
3122 directories works correctly. (thanks to Artem V. Andreev)
3123 * fixed bug 125: compiler preserves identity of closures. (reported
3125 * bug fixed: functions with &REST arguments sometimes failed with
3126 "Undefined function" when compiled with (DEBUG 3). (reported by
3128 * bug fix: overflow during compiling of setting element of a bit
3129 vector with constant index and value. (reported by Timmy Douglas)
3130 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3131 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3132 * on x86 compiler partially supports stack allocation of dynamic-extent
3134 * GO and RETURN-FROM do not check the extent of their exit points
3135 when compiled with SAFETY 0.
3136 * fixed some bugs related to Unicode integration:
3137 ** encoding and decoding errors are now much more robustly
3138 handled; it should now be possible to recover even from invalid
3139 input or output to the terminal. (thanks to Teemu Kalvas)
3140 ** provided a first cut at implementing STRING-TO-OCTETS and
3141 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3142 ** altered the SB-MD5 contributed module slightly, changing the
3143 interface just enough for it to be supportable for builds where
3144 lisp characters are not eight bits.
3145 * fixed some bugs revealed by Paul Dietz' test suite:
3146 ** the FORMATTER-generated functions for ~V[ conditionals require
3147 the correct number of arguments.
3148 ** READ-FROM-STRING returns the mandated second value when applied
3149 to displaced strings.
3150 ** the #\Rubout and #\Backspace characters are treated as invalid
3151 constituent characters by the tokenizer.
3153 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3154 * new feature: reloading changed shared object files with
3155 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3156 * new feature: references to foreign variables and functions
3157 can now be compiled and loaded before the corresponding shared
3158 object file is loaded, as long as the foreign definitions are
3159 available at runtime.
3160 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3161 supported. (thanks to Dan Debertin)
3162 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3163 just keywords. (thanks to Vincent Arkesteijn)
3164 * fixed bug #331: structure-class instances corresponding to
3165 DEFSTRUCT forms are now created eagerly.
3166 * fixed bug #345: backtraces from calls to undefined functions work
3167 on x86 as well. Related bug #61 is now also partially fixed on x86
3168 (backtraces from throws to unknown catch tags.)
3169 * bug fix: lambda-list parsing is now stricter vrt. order and number
3170 of lambda-list keywords.
3171 * bug fix: as specified by AMOP, an error is signalled if a
3172 class-option appears multiple times in a DEFCLASS form. (reported
3174 * bug fix: RANDOM can be compiled when the compiler derives the type
3175 of its numeric argument as a disjoint set of small integers.
3176 (reported by Paul Dietz)
3177 * bug fix: starting a core saved with shared objects loaded when
3178 those objects are not available no longer causes threaded SBCL to
3179 hang. (reported by Sean Ross)
3180 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3182 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3183 argument, which must always be NIL. (reported by Kalle Niemitalo)
3184 * bug fix: printing 1.0d+23 no longer results in an error.
3185 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3186 * bug fix: structure slot setters preserve evaluation order. (thanks
3188 * fixed some bugs related to Unicode integration:
3189 ** RUN-PROGRAM can allow its child to take input from a Lisp
3190 stream. (reported by Stefan Scholl)
3191 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3192 locales. (reported by Ken Causey)
3193 * fixed some bugs revealed by Paul Dietz' test suite:
3194 ** INCF, DECF and REMF evaluate their place form as specified in
3196 ** FORMATTER expands ~{ ~} iteration directives with V or #
3197 parameters correctly.
3198 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3199 consequent uses no arguments correctly.
3200 ** the system has a partial understanding of the (COMPLEX RATIO)
3202 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3205 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3206 * new feature: a build-time option (controlled by the :SB-UNICODE
3207 keyword feature, enabled by default) for building the system with
3208 support for the entire 21-bit character space defined by the
3210 * new feature: the system now has rudimentary external-format
3211 support; the primary user-visible change at this time is that
3212 characters with the high bit set (such as lower-case-e-acute) will
3213 print correctly to a terminal in a UTF-8 environment.
3214 * minor incompatible change: BASE-CHAR no longer names a class;
3215 however, CHARACTER continues to do so, as required by ANSI.
3216 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3217 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3218 has been moved to the SB-EXT package (temporarily re-exported from
3220 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3221 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3223 * fixed bug #351: better error-handlind and reporting for malformed
3225 * fixed bug #350: bignum-printing is now more memory-efficient,
3226 allowing printing of very large bignums, eg. (expt 2 10000000).
3227 (reported by Bruno Haible)
3228 * fixed bug #302: better primitive-type selection for intersection
3230 * fixed bug #308: non-graphic characters now all have names, as
3231 required. (reported by Bruno Haible)
3232 * bug fix: redefining a class with different superclasses now correctly
3233 removes it from the direct-subclasses of its previous superclasses.
3234 (reported by David Morse)
3235 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3236 new value now works. (reported by Bruno Haible)
3237 * bug fix: correct canonicalization of multiple non-standard slot
3238 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3239 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3240 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3241 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3242 now exists, an signals an error.
3243 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3244 during macroexpansion for non-iteration variables as well. (reported
3245 by Bruno Haible for CMUCL)
3246 * bug fix: Cyclic structures and unprintable objects in compiler
3247 messages no longer cause errors. (reported by Bruno Haible)
3248 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3249 and READ-FROM-STRING all now return a primary value of NIL if
3250 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3251 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3252 (reported by Bruno Haible for CMUCL)
3253 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3254 do not designate a condition. (reported by Bruno Haible for
3256 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3257 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3258 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3259 permitting resolution in favour of any of the conflicting symbols.
3260 (reported by Bruno Haible for CMUCL)
3261 * bug fix: EQUAL compiler optimizations is less aggressive on
3262 strings which can potentially compare true despite having distinct
3263 specialized array element types.
3264 * bug fix: unit enumerations can be defined without dividing by
3265 zero. (thanks to Vincent Arkesteijn)
3266 * FORMAT compile-time argument count checking has been enhanced.
3267 (report from Bruno Haible for CMUCL)
3268 * a partial workaround for the bug 262: the compiler does not try to
3269 inline-expand a local function doing RETURN-FROM from a deleted
3270 BLOCK. (thanks to Peter Denno for the bug report and to David
3271 Wragg for the simple test case)
3272 * fixed some bugs revealed by Paul Dietz' test suite:
3273 ** RENAME-PACKAGE allows all package designators as new package
3275 ** constraint propagation and lambda variable substitution are
3276 more cautious in dealing with partially deleted code.
3277 ** compiler sometimes lost reoptimization passes.
3278 ** CERROR, given a condition as condition designator, passes its
3279 remaining arguments to the continue format control without
3281 ** Case-altering FORMAT directives work correctly on non-ASCII
3283 ** The REAL type specifier handles bounds outside the floating
3284 point ranges without signalling FLOATING-POINT-OVERFLOW.
3285 ** Functions with IR1-transformations can create intercomponent
3286 references to global functions.
3287 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3289 ** FORMAT ~R treats a nil value for its first parameter correctly.
3291 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3292 * enhancement: saving cores with foreign code loaded is now
3293 supported on x86/NetBSD and sparc/Linux in addition to the previously
3294 supported platforms.
3295 * bug fix: on some platforms repeated installations caused multiple
3296 copies of HTML documentation to be installed -- should not happen
3297 any more. (reported by Stefan Scholl)
3298 * bug fix: parsing self-recursive alien record types multiple times
3299 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3300 original patch by Helmut Eller for CMUCL)
3301 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3302 (thanks to Richard Kreuter)
3303 * bug fix: defining classes whose accessors are methods on existing
3304 generic functions in other (locked) packages no longer signals
3305 bogus package lock violations. (reported by François-René Rideau)
3306 * bug fix: special variables as DEFMETHOD parameters no longer have
3307 associated bogus type declarations. (reported by David Wragg and
3309 * bug fix: read-write consistency on streams of element-type
3310 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3311 * bug fix: redefiniton of the only method of a generic function with
3312 no DEFGENERIC no longer emits a full WARNING. In addition,
3313 redefinition of generic functions with no DEFGENERIC to an
3314 incompatible lambda list now signals an error. (thanks to Zach
3316 * bug fix: DEFGENERIC now works even when there's a function of the
3317 same name in an enclosing lexical environment. (thanks to Zach
3319 * fixed compiler failure, caused by instrumenting code during
3320 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3321 * optimization: added loop analysis and improved register allocation
3322 * fixed some bugs revealed by Paul Dietz' test suite:
3323 ** POSITION on displaced vectors with non-zero displacement
3324 returns the right answer.
3325 ** (SIMPLE-STRING) is a valid type specifier for sequence
3327 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3329 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3330 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3332 ** The justification version of the FORMAT ~< directive treats
3333 non-zero minpad parameter correctly.
3335 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3336 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3337 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3338 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3339 the supported interface.
3340 * new feature: Single-stepping of code compiled with DEBUG 2 or
3341 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3342 * new feature: saving cores with foreign code loaded is now
3343 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3344 Timothy Moore's work for CMUCL)
3345 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3346 parameters to * instead of NIL if no initform is supplied.
3347 (reported by Johan Bockgaard)
3348 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3349 correctly when FUNCALL appears as the car of the form. Note:
3350 despite this FUNCALL forms are not currently subject to
3351 compiler-macro expansion. (port of Raymond Toy's fix for the
3352 same from CMUCL, reported by Johan Bockgaard)
3353 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3354 (thanks for Teemu Kalvas)
3355 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3356 case instead of terminating the iteration (thanks for Julian
3357 Squires, Sean Champ and Raymond Toy)
3358 * bug fix: incorrect expansion of defgeneric that caused a style
3359 warning. (thanks for Zach Beane)
3360 * bug fix: slot accessor effective method computation works properly
3361 for classes with multiple non-standard applicable methods on
3362 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3363 * on x86 compiler supports stack allocation of results of LIST and
3364 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3365 CMUCL implementation by Gerd Moellmann)
3366 * fixed some bugs revealed by Paul Dietz' test suite:
3367 ** FORMAT strings with both the ~<~:;~> form of the justification
3368 directive and pretty-printing directives cause an error.
3370 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3371 * incompatible change: the internal functions
3372 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3373 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3374 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3375 instead of the old functions.
3376 * new feature: on platforms where "dladdr" is available foreign
3377 function names now appear in backtraces. (based on Helmut Eller's
3379 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3380 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3382 * documentation: ASDF manual is now distributed with SBCL.
3383 * bug fix: SBCL can now load its contributed modules with REQUIRE
3384 even if the system-provided entries have been removed from
3385 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3387 * bug fix: backtraces involving undefined functions or assembly
3388 routines are more informative. (thanks to Brian Downing)
3389 * bug fix: mutually referent alien structures now work correctly.
3390 (reported by Rick Taube)
3391 * bug fix: structures defined by WITH-ALIEN can be referred to
3392 within other definitions in the same WITH-ALIEN.
3393 * bug fix: division operators (MOD, TRUNCATE and the like) with
3394 constant zero divisors and integer dividends no longer generate
3396 * bug fix: provide default methods for INPUT-STREAM-P and
3397 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3398 * bug fix: improve the detection and resolution of MOP metacycles
3399 (where effective method computation depends on the generic function
3400 having its effective method computed). (reported by Bruno Haible)
3401 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3402 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3403 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3404 * bug fix: pathnames with relative directory components can be
3405 represented relative to default pathnames.
3406 * optimization: in taking the GCD of bignums, reduce the two bignums
3407 to approximately the same size (using Euclid's algorithm) before
3408 applying the more sophisticated binary GCD. (thanks to Juho
3410 * optimization: COUNT on bitvectors now operates word-at-a-time.
3411 * optimization: ASH with a positive, but not necessarily constant,
3412 (leftwards) shift, when in a modular context, is compiled to a
3414 * fixed some bugs revealed by Paul Dietz' test suite:
3415 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3416 if the corresponding argument is NIL.
3417 ** FORMAT directives accepting a minpad parameter treat negative
3419 ** literal commas as character parameters to FORMAT directives are
3421 ** literal spaces directly after ~<Newline> directives within a
3422 format-logical-block (~:< ~@:>) do not induce :FILL-style
3423 conditional newlines.
3424 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3425 as specified: it no longer includes conditional newlines).
3426 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3428 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3429 :PER-LINE-PREFIX argument does not evaluate to a string.
3431 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3432 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3433 the manual for details; for now, package locks can be disabled by
3434 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3435 if no major problems are found then it is likely that they will be
3436 compiled in unconditionally.
3437 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3438 unsupported operators on all platforms. To load a shared library
3439 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3440 object file, link it into a shared library outside of SBCL and
3441 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3443 * bug workaround: ROOM T and the GC were not working together
3444 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3445 reporting facility aren't preserved. That reporting has been
3446 disabled, so now until and unless someone figures out how to make it
3447 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3448 * minor incompatible change: as threatened around sbcl-0.8.0, the
3449 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3450 The symbols are also exported from SB-PCL for backwards
3451 compatibility, but more so than before SB-PCL should be treated as
3452 an implementation-internal package.
3453 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3455 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3456 It is known as of this release not to work on the Alpha, however.
3457 * fixed bug #167: errors signalled due to illegal syntax in method
3458 bodies are now more legible.
3459 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3460 designators and can hence be used with TYPEP.
3461 * fixed bug #333: CHECK-TYPE now ensures that the type error
3462 signalled, if any, has the right object to be accessed by
3463 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3464 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3465 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3467 * fixed bug #334: programmatic addition of slots using specialized
3468 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3469 and :ALLOCATION :CLASS slots.
3470 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3471 float exponents. (rereported by Peter Seibel)
3472 * fixed a bug: #\Space (and other whitespace characters) are no
3473 longer considered to be macro characters in standard syntax by
3474 GET-MACRO-CHARACTER.
3475 * fixed bug: initialization of condition class metaobjects no longer
3476 causes an instance of the condition to be created. (reported by
3478 * fixed bug: it is now possible to have slots such that
3479 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3480 description is neither :INSTANCE nor :CLASS.
3481 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3482 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3483 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3484 non-standard SLOT-DEFINITION-ALLOCATION values.
3485 * fixed bugs: various race conditions handling exiting threads.
3486 CL-PPCRE's thread torture test now passes.
3487 * fixed arguably-a-bug: GC time proportional to number of threads in
3488 system even when most of them are idle
3489 * optimization: improved performance of BIT and SBIT on bit-vectors.
3490 * .fasl file incompatibility: The fasl file version number has
3491 been incremented because of changes associated with package locks.
3493 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3494 * minor incompatible change: the system no longer provides
3495 optimization hints (conditions which are TYPEP
3496 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3497 mode; these hints are still emitted when higher SPEED optimization
3499 * new contrib module: a sampling profiler (profiling by statistical
3500 sampling, rather than by instrumenting functions) is available as
3501 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3502 * the behaviour of the standard function ED is now customizeable by
3503 third parties through a hook variable: see ED's documentation
3504 string for information on the protocol.
3505 * the compiler no longer emits efficiency notes for (FUNCALL X)
3506 when the type of X is uncertain under default optimization
3508 * fixed bug 276: mutating a binding of a specialized parameter to a
3509 method to something that is not TYPEP the specializer is now
3511 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3512 exhibit the required behaviour on the x86 platform. (thanks to
3513 Peter van Eynde, Eric Marsden and Bruno Haible)
3514 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3515 even for difficult arguments. (reported by Peter Graves)
3516 * fixed bug 141a: the backquote printer now descends quoted
3518 * fixed another bug in backquote printing: no more destructive
3519 modification of the form's list structure. (reported by Brian
3521 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3522 move between its address being taken and the call to
3523 interrupt_thread, fixing a crashing race condition.
3524 * the SB-POSIX contrib implementation has been adjusted so that it
3525 no longer exhibits ridiculously poor performance when constructing
3526 instances corresponding to C structs.
3528 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3529 * minor incompatible change: the sb-grovel contrib now treats C
3530 structures as alien (in the sense of SB-ALIEN) objects rather than
3531 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3532 has implications for memory management of client code
3533 (sb-grovel-returned objects must now be manually managed) and for
3534 type safety (alien objects now have full types).
3535 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3536 used to control emission of compiler diagnostics, rather than the
3537 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3538 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3539 quality should be considered deprecated.
3540 * install.sh now installs the user manual as well
3541 * (not quite a new documentable feature, but worth considering in
3542 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3543 beginnings of a semantically meaningful condition hierarchy is
3544 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3546 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3547 designator as the defaults argument.
3548 * fixed bug: Displaced arrays whose displaced-to array has become
3549 too small now cause ARRAY-DIMENSION to signal an error, providing
3550 for safer bounds-checking. (reported by Bruno Haible)
3551 * fixed bug: DEFCLASS slot definitions with identical :READER and
3552 :WRITER names now signal a reasonable error. (reported by Thomas
3554 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3556 * fixed bug: Invalid slot specification errors now print correctly.
3557 (thanks to Zach Beane)
3558 * fixed bug 320: Shared to local slot value transfers in class
3559 redefinitions now happen corrently from superclasses as
3560 well. (reported by Bruno Haible)
3561 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3563 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3564 improper lists correctly. (reported by Bruno Haible)
3565 * fixed bug 313: source-transform for <fun-name> was erroneously
3566 applied to a call of a value of a variable with name <fun-name>.
3567 (reported by Antonio Menezes Leitao)
3568 * fixed bug 307: The obsolete instance protocol ensures that
3569 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3570 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3571 remove dead unknown-values globs from the middle of the stack.
3572 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3573 easier to resume long computations after using *BREAK-ON-SIGNALS*
3574 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3575 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3576 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3577 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3578 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3579 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3581 * fixed a (fairly theoretical) bug in string printing: if
3582 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3583 does not have array-element-type equal to the most general string
3585 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3586 function name. (thanks to Nikodemus Siivola)
3587 * fixed bug: compile-time format string checker failed on
3588 non-closed ~{. (reported by Thomas F Burdick)
3589 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3590 don't warn on legal loop code involving more than one aggregate
3591 boolean. (thanks to Nikodemus Siivola)
3592 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3593 in keyword position to MAKE-PACKAGE was not being reported as
3595 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3596 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3598 * fixed bugs 280 and 312: the checking for multiple definitions in a
3599 file is less likely to become confused by uses of inline
3601 * fixed bug: the #S reader macro performs the keyword coercion
3602 specified for slot names. (reported by Kalle Niemitalo)
3603 * fixed bug: lambda lists may contain symbols whose names start with
3604 & but are not lambda-list-keywords; their occurrence triggers a
3606 * fixed bug 321: define-method-combination argument lambda lists do
3607 not cause invalid code to be generated when &optional or &aux
3608 variables have default values. (reported by Bruno Haible)
3609 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3610 have CLOS classes; this appears also to have fixed reported
3611 instability in stack exhaustion detection.
3612 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3613 MUFFLE-WARNING when no associated restart is present is now
3615 * optimization: rearranged the expansion of various defining macros
3616 so that each expands into only one top-level form in a
3617 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3619 * optimization: used a previously little-used slot in symbols to
3620 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3622 * fixed some bugs revealed by Paul Dietz' test suite:
3623 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3625 ** Fixed an optimization bug related to inheritance of initforms
3626 from local to shared slots.
3627 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3628 ** CAST optimizer forgot to flush argument derived type.
3629 ** print/read consistency on floats is now orders of magnitude
3630 more likely. (thanks also to Bruno Haible for a similar report
3632 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3633 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3634 for objects of type REAL. Make it so.
3635 ** SXHASH is specified (infelicitously) to respect similarity,
3636 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3637 it so. (thanks to Markus Ziegler)
3638 ** on the Alpha, the compiler succeeds in compiling functions
3639 returning a known number of arguments greater than 63.
3640 ** fixed handling of invalid NIL arguments in keyword position
3642 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3644 ** provided a readably-printable representation for RANDOM-STATE
3646 ** ensured that pathnames, where they have a namestring, always
3647 print using #P"..." syntax.
3649 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3650 * Support for the forthcoming 2.0 version of the NetBSD kernel
3651 running on x86 hardware has been added. (thanks to Perry
3652 E. Metzger most immediately, and others for their past work)
3653 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3654 current release version; SBCL's OpenBSD support had been broken
3655 since about the time of OpenBSD's switch to ELF binary format.)
3656 * [placeholder for DX summary]
3657 ** user code with &REST lists declared dynamic-extent, under high
3658 speed or space and low safety and debug optimization policy.
3659 * The manual has been converted to Texinfo format and the debugger
3660 chapter from the cmucl manual has been added.
3661 * A facility has been added to extract documentation strings from
3662 sbcl and store them as Texinfo-formatted snippets for inclusion in
3663 the manual (via Texinfo's @include directive)
3664 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3665 the test case to Dave Roberts)
3666 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3667 pointers. (reported by Sean Ross)
3668 * bug fix: PROFILE output is printed nicely even for large numerical
3669 values. (thanks to Zach Beane)
3670 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3671 greater than 32 handle EOF correctly.
3672 * bug fix: on X86 an immediate argument of the IMUL instruction is
3673 correctly printed in disassembly. (thanks to Lutz Euler)
3674 * bug fix: class slots in redefined classes preserve their old
3675 values. (thanks to Bruno Haible and Nikodemus Siivola)
3676 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3677 succeeds. (reported by Marco Baringer)
3678 * fixed some bugs revealed by Paul Dietz' test suite:
3679 ** READ-SEQUENCE now works on ECHO-STREAMs.
3680 ** RATIONALIZE works more according to its specification. (thanks
3683 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3684 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3685 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3686 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3687 should matter to you only if you rebind the printer control
3688 variables and then find you want different bindings in the
3689 debugger than in the ordinary execution of your program.)
3690 * The runtime build system has been tweaked to support building
3691 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3692 assembler and linker. (thanks to Nikodemus Siivola)
3693 * Unbound, undefined, undeclared variables now trigger full
3694 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3695 more often programmer error than deliberate exploitation of undefined
3697 * optimization: the hash algorithm for strings has changed to one
3698 that is less vulnerable to spurious collisions. (thanks to Juho
3700 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3701 needless bounds checking. (thanks to Juho Snellman)
3702 * optimization: implemented multiplication as a modular
3703 (UNSIGNED-BYTE 32) operation on the PPC backend.
3704 * fixed some bugs revealed by Paul Dietz' test suite:
3705 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3707 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3708 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3709 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3711 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3713 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3715 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3716 their output stream on EOF from read.
3717 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3718 have been read to end-of-file.
3719 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3721 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3722 description of determination of which consecutive characters
3724 ** Printing the "Space" character with escaping on now yields "#\\ ",
3725 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3726 ** Reading floating-point numbers with *READ-BASE* set to a number
3727 less than 10 works correctly.
3728 ** Reading floating-point numbers with *READ-BASE* set to a number
3729 more than 10 works correctly.
3730 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3731 the readtable currently in effect.
3733 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3734 * minor incompatible change: parsing of namestrings on a physical
3735 (Unix) host has changed; numbers after the final #\. in a
3736 namestring are no longer interpreted as a version field. This is
3737 intented to be largely invisible to the user, except that the
3738 meaning of the namestring "*.*.*" has changed: it now refers to a
3739 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3740 should usually be replaced by
3741 (make-pathname :name :wild :type :wild :version :wild)
3742 with the added benefit that this is more likely to be portable.
3743 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3744 option to OPEN now signals an error if the file being opened
3745 exists; this may have an impact on existing code.
3746 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3747 signals received, on the PowerPC platforms (both Linux and
3748 Darwin). (thanks to Pierre Mai for pointing out the location of
3750 * several fixes on OS X: The system now builds and runs cleanly on
3751 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3752 (thanks to Brian Mastenbrook)
3753 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3754 second-resolution: integer multiples of 1/3600 between -24 and 24.
3755 (thanks to Vincent Arkesteijn)
3756 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3757 type when called with 1 argument; PEEK-CHAR checked type of
3758 PEEK-TYPE only after having read first character from a
3759 stream. (reported by Peter Graves)
3760 * bug fix: the garbage collector now has much better locality
3761 behaviour, and in particular no longer treats all memory as being
3762 exhausted when many small objects point to each other in a deeply
3764 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3765 recognized as being TYPEP their class.
3766 * bug fix: the PUSHNEW documentation string has been corrected.
3767 (thanks to Vincent Arkesteijn)
3768 * bug fix: defaulting of the value for the last of an atypically
3769 large number of multiple values being bound was not being
3770 performed correctly on the Alpha or PPC platforms
3771 * optimization: implemented multiplication as a modular
3772 (UNSIGNED-BYTE 32) operation on the x86 backend.
3773 * optimization: SEARCH on simple-base-strings can now be open-coded.
3774 (see also contrib/compiler-extras.lisp for inspiration for
3775 teaching the compiler about the Boyer-Moore algorithm).
3776 * value, returned by MAX (and MIN) called with several EQUALP, but
3777 not EQL, arguments now does not depend on compiler settings.
3778 * fixed some bugs revealed by Paul Dietz' test suite:
3779 ** in stack analysis liveness information is propagated from
3780 non-local entry points.
3781 ** pathwise CAST removing failed when the CAST node did not start
3783 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3784 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3786 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3787 host is already defined.
3788 ** RENAME-FILE works on streams instead of signalling an internal
3790 ** PEEK-CHAR uses the current readtable when determining whether
3791 or not a character is whitespace.
3792 ** MERGE-PATHNAMES handles the case when the pathname does not
3793 specify a name while the default-pathname specifies a version.
3794 ** Pathnames now stand a better chance of respecting print/read
3796 ** Attempting to use standardized file system operators with a
3797 pathname with invalid :DIRECTORY components signals a
3799 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3801 ** DIRECTORY on logical pathnames is more correct.
3802 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3803 signal a TYPE-ERROR if their argument is not a stream.
3804 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3805 designator argument does not designate a stream.
3806 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3807 examining the synonym.
3808 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3810 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3811 element-type larger than ([UN]SIGNED-BYTE 32).
3813 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3814 * When built with the :SB-FUTEX feature, threaded builds now take
3815 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3816 for faster/more reliable mutex and condition variable support.
3817 * Incompatible change (but one you probably shouldn't have been using
3818 anyway): the interface and code for arbitrating between multiple
3819 threads in the same user session has been redesigned.
3820 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3821 error when called without an explicit environment argument.
3822 (thanks to Nikodemus Siivola)
3823 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3824 confused about their position. (thanks to Adam Warner and Gerd
3826 * bug fix: Pretty printing backquoted forms with unquotations in the
3827 argument list position of various code constructs such as LAMBDA
3828 now works correctly. (reported by Paul Dietz)
3829 * bug fix: Pretty printing unquotations no longer loses all
3830 stream position information.
3831 * optimization: performance of string output streams is now less
3832 poor for multiple small sequence writes.
3833 * optimization: performance of CSUBTYPEP in the presence of complex
3834 expressions involving CONS and NOT many times has been improved.
3835 (reported by Paul Dietz)
3836 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3838 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3839 streams for the REPL, for the debugger, and so on. (thanks to
3841 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3842 * fixed some bugs revealed by Paul Dietz' test suite:
3843 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3844 is ignored if it is too small, rather than propagating through
3845 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3846 ** extremely complex negations of CONS types were not being
3847 sufficiently canonicalized, leading to inconsistencies in
3849 ** VALUES tranformer lost derived type.
3851 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3852 * fixed a bootstrapping bug: the build process no longer assumes
3853 that the various BOOLE-related constants have the same value in
3854 host and target lisps. (noted by Paul Dietz' test suite on an
3855 SBCL binary built from CLISP)
3856 * The system can now be dynamically linked on the MIPS platform,
3857 which enables dynamic loading of foreign code from Lisp. (thanks
3858 to Ralf Baechle for discussions on the MIPS ABI)
3859 * The system now records debugging information for its own source
3860 files in a filesystem-position-independent manner, relative to
3861 the "SYS" logical host.
3862 * fixed a compiler bug: MV-LET convertion did not check references
3863 to the "max args" entry point. (reported by Brian Downing)
3864 * tweaked disassembly notes to be less confident about proclaiming
3865 some instruction as an LRA. (thanks to Brian Downing)
3866 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3867 now each have their own history, command character, and other
3868 characteristics. (thanks to David Lichteblau)
3869 * fixed some bugs revealed by Paul Dietz' test suite:
3870 ** compiler failure in compiling LOGAND expressions including a
3872 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3873 shift greater than 32.
3874 ** FLUSH-DEST did not mark blocks for type check regeneration.
3875 ** HANDLER-CASE failed to accept declarations in handler clauses
3876 in some circumstances.
3878 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3879 * New code in contrib/sb-introspect (still probably not entirely
3880 stable yet) provides some support for smart Lisp development
3881 environments like SLIME.
3882 * The conditions signalled for errors occurring when loading .fasl
3883 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3884 in a way which should help ASDF recover gracefully.
3885 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3886 stuff has been cleaned up. If you code contrib/ stuff, this might
3887 affect you, and you can look at contrib/README, contrib/STANDARDS,
3888 and/or the 0.8.4.27 diff to check.
3889 * In full calls the compiler now does not generate checks for declared
3890 argument types for all arguments.
3891 * various threading fixes
3892 ** and some experimental patches which didn't make it into
3893 the main tree for this release, but which are shipped in
3894 contrib/experimental-thread.patch as a possible fix for some
3895 failures (deadlock, spinning...) in GC-intensive multithreaded
3897 * fixed PPC build problem (source code incompatibility of different
3898 library versions): added offsetof() hackery which attempts to divine
3899 where glibc maintainers put uc_mcontext today
3900 * fixed bug 282: compiler does not trust type assertions while passing
3901 arguments to a full call.
3902 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3903 &OPTIONAL VALUES type parameter.
3904 * fix bug 214: algorithm for noting rejected templates is now more
3905 similar to that of template seletion. (also reported by rydis on
3907 * fixed bug 141b: printing backquoted information readably and prettily
3908 inserts a space where necessary.
3909 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3910 (CHARACTER 10) are now reported as errors, rather than propagated
3911 as unknown types. (reported by piso on #lisp)
3912 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3913 with values NIL and :ERROR. (thanks to Milan Zamazal)
3914 * fixed bug 191c: CLOS now does proper keyword argument checking as
3915 described in CLHS 7.6.5 and 7.6.5.1.
3916 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3917 longer raise an error; further, using a list as a for-as-arithmetic
3918 counter now raises a meaningful error.
3919 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3920 now understood by sequence creation functions such as MAKE-SEQUENCE
3922 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3923 a STRING-INPUT-STREAM.
3924 * compiler enhancement: SIGNUM is now better able to derive the type
3926 * type declarations inside WITH-SLOTS are checked. (reported by
3928 * fixed some bugs revealed by Paul Dietz' test suite:
3929 ** incorrect optimization of TRUNCATE for a positive first
3930 argument and negative second.
3931 ** compiler failure in let-convertion during flushing dead code.
3932 ** compiler failure while deriving type of TRUNCATE on an
3933 interval, containing 0.
3934 ** ASH of a negative bignum by a negative bignum count now returns
3936 ** intersection of CONS types now canonicalizes properly, fixing
3937 inconsistencies in SUBTYPEP.
3939 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3940 * incompatible change: The --disable-debugger command line
3941 option now clobbers the debugger at a more fundamental
3942 level, by redefining #'INVOKE-DEBUGGER instead of by
3943 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3944 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3945 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3946 enter the debugger REPL and then suffer recursive errors
3947 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3948 while under the new system, BREAK in --disable-debugger mode
3949 terminates the system just as an unhandled error would.
3950 * fixed compiler performance when processing loops with a step >1;
3951 * bug fix: DOCUMENTATION now retrieves generic function
3952 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3953 support has been systematized, and now supports the methods
3954 specified by ANSI, along with a default method and a method for
3955 slot documentation. (reported by Nathan Froyd)
3956 * bug fix: effective methods associated with a generic function are
3957 no longer cached over a change of that generic function's method
3958 combination. (reported by Andreas Fuchs)
3959 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3960 names a non-existent directory. (thanks to Andreas Fuchs)
3961 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3962 the PPC platform, lead to stack corruption; this has been fixed.
3963 (reported by Rainer Joswig)
3964 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3965 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3966 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3967 arithmetic in general, is now much more reliable on the PPC
3969 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3970 platform now returns the right answer.
3971 * optimization: restored some effective method precomputation in
3972 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3973 precomputation is now tunable.
3974 * optimization: compiler-internal data structure use has been
3975 reviewed, and changes have been made that should improve the
3976 performance of the compiler by about 20%.
3977 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3978 simple-base-strings and simple-bit-vectors is improved.
3979 * optimization: the optimization of 32-bit logical and arithmetic
3980 functions introduced in version 0.8.3 on the x86 has been
3981 implemented on the mips, ppc and sparc platforms; an
3982 implementation of the same facility, but for 64-bit arithmetic,
3983 has been added for the alpha.
3984 * microoptimization: the compiler is better able to make use of the
3985 x86 LEA instruction for multiplication by constants.
3986 * bug fix: in some situations compiler did not report usage of
3987 generic arithmetic in (SPEED 3) policy.
3988 * bug 145b fix: compiler used wrong type specifier while converting
3989 MEMBER-types to numeric.
3990 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3992 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3993 index argument now works properly on the Alpha platform.
3994 * bug fix: floating point exception treatment on the Alpha platform
3996 * bug fix: FILE-POSITION works much better on string input and
3997 output streams. (thanks to Nikodemus Siivola)
3998 * bug fix: many threading/garbage collection symptoms sorted.
3999 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4000 might be pseudo-atomic.
4001 * internal change: Stopping for GC is now done with signals not
4002 ptrace. GC is now done in whichever thread wanted it, instead of
4004 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4006 * bug fix: result form in DO is not contained in the implicit
4008 * incompatible change: ICR structure is changed; the value part of
4009 CONTINUATION is now called LVAR; corresponding functions are
4010 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4011 * added type deriver for ISQRT (thanks to Robert E. Brown).
4012 * bug fix: better support for loading from the command line when an
4013 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4015 * fixed some bugs revealed by Paul Dietz' test suite:
4016 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4017 ** ROUND and FROUND now give the right answer when given very
4018 small float arguments.
4019 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4021 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4022 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4023 ** LCM should return a non-negative integer.
4024 ** PARSE-INTEGER returned the index of a terminator instead of the
4025 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4026 ** PARSE-INTEGER returned an incorrect index being applied to a
4028 ** LCM with two arguments of 0 returns 0 rather than signalling
4030 ** unsigned addition of a 32-bit constant with the high bit set no
4031 longer causes an internal compiler error on the x86.
4032 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4033 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4034 with negative last argument.
4035 ** byte specifiers with zero size and position no longer cause
4036 an error during type derivation.
4037 ** bignum multiplication on the Alpha platform now returns the
4039 * porting: The system now builds on SuSE AMD64, although it still
4040 generates a 32-bit binary.
4041 * .fasl file incompatibility: The fasl file version number has
4042 been incremented (because of the changes to internal compiler
4043 data structures referred to above).
4045 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4046 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4047 more accurately, on the Darwin kernel running on PowerPC hardware.
4048 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4049 * Compiler code deletion notes now signal a condition of type
4050 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4051 an associated MUFFLE-WARNING restart.
4052 * The compiler now performs limited argument count validation of
4053 constant format strings in FORMAT, and where appropriate in ERROR,
4054 CERROR and WARN. (thanks to Gerd Moellmann)
4055 * New ASDF-INSTALL contrib can be used for automatic download and
4056 installation of third-party Lisp code from CCLAN or other sites
4058 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4059 which forces another thread to execute a function supplied by the
4061 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4062 now accept and act upon their :ELEMENT-TYPE keyword argument.
4063 (reported by Martin Atzmueller, Edi Weitz)
4064 * bug fix: FILE-POSITION now accepts position designators up to
4065 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4066 is the greater. (thanks to Patrik Nordebo)
4067 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4068 Kalle Olavi Niemitalo)
4069 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4070 printable. (reported by Eric Marsden)
4071 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4072 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4073 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4074 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4075 (thanks to Stig Sandoe)
4076 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4077 UNREAD-CHAR now correctly includes the unread character in the
4078 target sequence. (thanks to Gerd Moellmann)
4079 * bug fix in threaded builds: the system can now be suspended and
4080 resumed by shell job control with minimal disruption.
4081 * bug fixes in times and timezones >2038AD
4082 * better handling of "where is GNU make?" problem in build scripts
4083 (thanks to Nikodemus Siivola)
4084 * new optimization: inside a named function any reference to a
4085 function with the same name is considered to be a self-reference;
4086 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4087 optimization quality.
4088 * new optimization on x86: logical functions and + now have
4089 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4090 used when the result is truncated to 32 bits.
4091 * VALUES declaration is partially enabled.
4092 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4093 * fixed some bugs revealed by Paul Dietz' test suite:
4094 ** The system now obeys the constraint imposed by
4095 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4096 types form a lattice under type intersection.
4097 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4098 ** ASSOC now ignores NIL elements in an alist.
4099 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4100 and (1+ MOST-POSITIVE-FIXNUM) answers.
4101 ** The addition of a method with invalid qualifiers to a generic
4102 function does not cause an error to be signalled immediately;
4103 a warning is signalled, and the error is generated only on
4104 calling the generic function.
4105 * changed .fasl file version number, in part to add type codes for
4106 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4107 obscure ANSI requirements
4109 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4110 * fixed bug 148: failure to inline-expand a local function left
4111 garbage, confusing the compiler.
4112 * fixed bugs 3cd: structure slot readers perform type check if the
4113 slot can have an invalid value (i.e. it is either not initialized
4114 or can be written with a less specific slot writer).
4115 * bug fix: the compiler now traps array references to elements off
4116 the end of an array; previously, the bounds checking in some
4117 circumstances could go off-by-one.
4118 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4120 * type declarations for array element types now obey the description
4121 on the CLHS page "Declaration TYPE", as per discussions on
4122 sbcl-help around 2003-05-08. This means that a declaration
4123 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4124 declaration, all references to BAR will be asserted or assumed
4125 (with THE, so dependent on compiler policy) to involve objects of
4126 type FOO. Note that no such declaration is implied in
4127 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4128 * declared types of functions from the "Conditions"
4129 chapter. (reported by Paul Dietz)
4130 * bug fix: CERROR accepts a function as its first argument.
4131 * bug fix: NTH an NTHCDR accept a bignum as index
4132 arguments. (reported by Adam Warner)
4133 * optimization: character compare routines now optimize comparing
4134 against a constant character. (reported by Gilbert Baumann)
4135 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4136 argument now works properly on the MIPS platform.
4137 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4138 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4139 declared to have a functional type, does not cause an error
4141 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4142 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4143 * fixed bug: if last continuation of a deleted block has a
4144 destination, this destination should be deleted too. (reported by
4146 * fixed a bug in the bootstrap process: the host compiler's values
4147 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4148 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4149 test case from Patrik Nordebo)
4150 * improved the ability of the disassembler on the PPC platform to
4151 provide helpful disassembly notes.
4152 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4153 the class in more cases than previously.
4154 * bug fix: FILE-POSITION now understands :START and :END for
4155 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4156 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4157 8) data. (thanks to David Lichteblau)
4158 * bug fix: it is possible to add a method to a generic function
4159 without lambda list.
4160 * bug fix: reader failed to signal END-OF-FILE inside an
4161 object representation. (reported by Nikodemus Siivola)
4162 * fixed some bugs revealed by Paul Dietz' test suite:
4163 ** LAST and [N]BUTLAST should accept a bignum.
4164 ** condition slot accessors are methods.
4165 ** (VECTOR NIL) is a subtype of STRING.
4167 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4168 * minor incompatible change: some nonsensical specialized lambda
4169 lists (used in DEFMETHOD) which were previously ignored now signal
4171 * minor incompatible change: the system is now aware of the types of
4172 variables in the COMMON-LISP package, and will signal errors for
4173 most violations of these type constraints (where previously they
4174 were silently accepted).
4175 * minor incompatible change: COMPILE-FILE now uses the freedom
4176 afforded (ANSI 3.2.2.3) to use derived function types for
4177 functions defined in the same file. This also permits the system
4178 to warn on static type mismatches and function
4179 redefinition. (Currently it does not work with high DEBUG level.)
4180 * minor incompatible change: VALUES declaration is disabled.
4181 * When issuing notes, the compiler now signals a condition of type
4182 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4183 restart for use in user handlers. It is expected that the
4184 COMPILER-NOTE condition will eventually become a condition
4185 supertype to a hierarchy of note types, which will then be
4186 handleable in a similar fashion. However, at the moment, no such
4187 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4188 but it's an implementation detail, not a classification for the
4190 * Changes in type checking closed the following bugs:
4191 ** type checking of unused values (192b, 194d, 203);
4192 ** template selection based on unsafe type assertions (192c, 236);
4193 ** type checking in branches (194bc).
4194 * A short form of VALUES type specifier has ANSI meaning (it has
4195 increased the number of situations when SBCL cannot perform type
4197 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4198 keywords or constants is permissible.
4199 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4200 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4201 classes. (thanks to Antonio Martinez)
4202 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4203 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4204 argument to a pretty-print stream. Instead, it leaves any such
4205 operations to DESCRIBE-OBJECT methods.
4206 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4208 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4209 lambda lists. (thanks to David Lichteblau)
4210 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4211 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4212 (thanks to Gerd Moellmann)
4213 * fixed bug 246: increased compilation speed of long
4214 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4216 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4218 * DEFCONSTANT now throws a condition of type
4219 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4220 constant to a non-EQL value; CONTINUE and ABORT restarts
4221 respectively change and preserve the value.
4222 * fixed bug 63: The code walker, part of the implementation of CLOS,
4223 is now better at handling symbol macros.
4224 * bug fix: There is no longer an internal implementation type named
4225 CL:LENGTH. (reported by Raymond Toy)
4226 * bug fix: In macro-like defining macros/special operators the
4227 implicit block does not enclose the lambda list.
4228 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4229 enclosed in parentheses) are not suitable as type specifiers, and
4230 their use properly signals an error now.
4231 * bug fix: An argument count mismatch for a type specifier in code
4232 being compiled no longer causes an unhandled error at compile
4233 time, but signals a compile-time warning.
4234 * fixed simple vector readable printing
4235 * bug fix: DESCRIBE takes more care over whether the class
4236 precedence list slot of a class is bound before accessing it.
4237 (reported by Markus Krummenacker)
4238 * bug fix: FORMATTER can successfully compile pretty-printer format
4239 strings which use variants of the ~* directive inside.
4240 * bug fix: SEARCH now applies its TEST predicate to the elements of
4241 the arguments in the correct order. (thanks to Wolfhard Buss)
4242 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4243 in type inference. (thanks to Robert E. Brown)
4244 * bug fix: Reading in symbols with an explicit package name of ""
4245 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4246 * fixed some bugs revealed by Paul Dietz' test suite:
4247 ** NIL is now allowed as a structure slot name.
4248 ** Arbitrary numbers, not just REALs, are allowed in certain
4249 circumstances in LOOP for-as-arithmetic clauses.
4250 ** Multiple class redefinitions before slot access no longer
4251 causes a type error.
4252 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4253 association between the name and a class.
4254 ** Generic functions with non-standard method-combination and over
4255 five methods all of which return constants no longer return NIL
4256 after the first few invocations. (thanks to Gerd Moellmann)
4257 ** CALL-NEXT-METHOD with no arguments now passes the original
4258 values of the arguments, even in the presence of assignment.
4259 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4261 ** DISASSEMBLE works with closures and funcallable instances.
4262 ** ADD-METHOD now returns the generic function, not the new method.
4263 ** FIND-METHOD signals an error if the lengths of the specializers
4264 is incompatible with the generic function, even if the ERRORP
4266 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4267 which its argument is a member.
4268 ** DEFCLASS only redefines the class named by its class-name
4269 argument if that name is the proper name of the class;
4270 otherwise, it creates a new class.
4271 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4272 of the UNBOUND-SLOT condition to the name of the slot.
4273 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4274 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4275 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4276 SLOT-MAKUNBOUND in the specified fashion.
4278 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4279 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4280 cross-compilation host. As a consequence, we can now bootstrap our
4281 way up to SBCL starting with a bare gcc toolchain and human-readable
4282 source code (first the source to CLISP, then the source to SBCL).
4283 * A contributed module containing a partial implementation of the
4284 simple-streams interface has been included. (thanks to Rudi
4286 * A contributed module implementing the RFC1321 Message Digest
4287 Algorithm, known as MD5, has been included.
4288 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4289 no longer has any effect, as the code controlled by this feature
4290 has been deleted. (As far as we know, no-one has ever built using
4291 this feature, and its semantics were confused in any case).
4292 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4293 work on conditions (as required by the ANSI specification),
4294 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4295 expected behaviour on conditions. Users should note, however,
4296 that such behaviour is not required by the ANSI specification,
4297 and so use of this behaviour may render their code unportable.
4298 * fixed some bugs revealed by Paul Dietz' test suite:
4299 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4301 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4302 ** SXHASH on condition objects no longer returns NIL.
4303 ** :ALLOCATION :CLASS slots are better treated; their values are
4304 updated on class redefinition, and initforms inherited from
4305 superclasses are applied.
4306 ** REMOVE-METHOD returns its generic function argument even when
4307 no method was removed.
4308 ** SHARED-INITIALIZE now initializes the values of the requested
4309 slots, including those with :ALLOCATION :CLASS.
4310 ** ALLOCATE-INSTANCE now works on structure classes defined via
4311 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4313 ** SLOT-EXISTS-P now works on conditions, as well as structures
4315 ** MAKE-LOAD-FORM now has the required methods on
4316 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4317 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4318 keyword, and now implements the SLOT-NAMES argument.
4319 ** methods with &OPTIONAL arguments no longer allow too many
4320 arguments to be passed in the call without error.
4321 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4322 option is consistent with the required arguments of the generic
4323 function lambda list.
4324 * bug fix: REQUIRE accepts a string designator. (Thanks to
4326 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4327 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4328 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4329 * bug fix: The compiler now checks for duplicated variables in macro
4331 * bug fix: SETQ on globals returns the correct value.
4332 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4333 not a COMPILER-ERROR (followed by some other strange error on
4334 choosing the CONTINUE restart).
4335 * bug fix: make.sh and friends are now more consistent in the way that
4336 they look for GNU "make".
4338 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4339 * experimental native threads support (on x86 Linux >=2.4 only).
4340 This is not compiled in by default: you need to add :SB-THREAD to
4341 the target features. See the "Beyond ANSI" chapter of the manual
4343 * fix for longstanding nonANSIism: The old distinction between
4344 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4345 The return value from CL:FIND-CLASS is now a CLOS class, and
4346 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4347 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4348 * An interface to the MetaObject Protocol, as described in Kiczales,
4349 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4350 MIT Press, 1991, is available from the SB-MOP package.
4351 * incompatible change: the SB-PCL package should now be considered
4352 a private implementation detail, and no longer a semi-private MOP
4354 * minor incompatible change: due to rearrangement for threads, the
4355 control stack and binding stack are now allocated at arbitrary
4356 addresses instead of being hardcoded per-port. Users affected by
4357 this probably have to be doing advanced things with shared
4358 libraries, and will know who they are.
4359 * minor incompatible change: Previously, all --eval forms used were
4360 processed with READ before any of them were processed with EVAL.
4361 Now each --eval form is processed with both READ and EVAL before
4362 the next --eval form is processed. (Thus package operations like
4363 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4364 work as the user might reasonably expect.)
4365 * minor incompatible change: *STANDARD-INPUT* is now only an
4366 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4368 * minor incompatible change: Y-OR-N-P is now character-oriented,
4369 not line oriented. Also, YES-OR-NO-P now works without errors.
4370 (thanks to Antonio Martinez)
4371 * sb-aclrepl module improvements: an integrated inspector, added
4372 repl features, and a bug fix to :trace command.
4373 * Known functions, which cannot be open coded by the backend, are
4374 considered to be able to check types of their arguments. (fixing
4375 a bug report by Nathan J. Froyd)
4376 * fixed a bug in computing method discriminating functions: It is
4377 now possible to define methods specialized on classes which have
4378 forward-referenced superclasses. (thanks to Gerd Moellmann)
4379 * fixed evaluation order in optional entries (reported by Gilbert
4381 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4382 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4383 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4384 required-by-AMOP NAME argument, as well as CLASS and
4385 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4386 * fixed bug 20: DEFMETHOD can define methods using names that are
4387 not the proper names of classes to designate class specializers.
4388 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4389 Unix file descriptors, instead of blowing up. (thanks to Antonio
4391 * Garbage collection refactoring: user-visible change is that a
4392 call to the GC function during WITHOUT-GCING will not do garbage
4393 collection until the end of the WITHOUT-GCING. If you were doing
4394 this you were probably losing anyway.
4395 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4396 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4397 TYPEP the latter but not the former.
4398 * The compiler issues a full WARNING for calls to undefined functions
4399 with names from the CL package.
4400 * MAP-INTO for a vector destination is open coded. (reported by
4401 Brian Downing on c.l.l)
4402 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4403 documentation string.
4404 * fixed some bugs revealed by Paul Dietz' test suite:
4405 ** COPY-ALIST now signals an error if its argument is a dotted
4407 ** Condition slots are now accessed more correctly in the presence
4408 of multiple initargs for a given slot.
4409 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4410 exclude restarts of the same name associated with a different
4412 ** DEFCLASS of forward-referenced classes with another
4413 forward-referenced class in the superclasses list no longer
4415 ** Condition slots are now initialized once each, not multiple
4416 times. (thanks to Gerd Moellmann)
4417 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4419 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4420 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4421 arguments contain duplicated elements.
4422 ** RESTART-CASE understands local macros.
4423 ** RESTART-CASE associates exactly its own restarts with a condition.
4424 ** ENDP in safe mode checks its argument to be of type LIST.
4425 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4426 in question is unbound.
4427 ** Optimized MAKE-INSTANCE functions no longer cause internal
4428 assertion failures in the presence of duplicate initargs.
4429 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4430 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4431 propagated even in the ctor optimized implementation of
4433 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4435 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4436 * a better implementation of SXHASH on (simple) bit vectors,
4437 measured both in execution speed and in distribution of results
4438 over the positive fixnums, has been installed. Likewise, a better
4439 implementation of EQUAL for simple bit vectors is now available.
4440 * fixed CEILING optimization for a divisor of form 2^k.
4441 * fixed bug 240 (emitting extra style warnings "using the lexical
4442 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4443 by Antonio Martinez)
4444 * fixed SXHASH, giving different results for NIL depending on type
4445 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4446 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4447 variable. (found by Rolf Wester)
4448 * SBCL does not ignore type declarations for special
4449 variables. (reported by rif on c.l.l 2003-03-05)
4450 * some bug fixes in contrib/sb-aclrepl/
4451 * fixed some bugs revealed by Paul Dietz' test suite:
4452 ** a bug in the CONS type specifier, whereby the CAR and CDR
4453 types got intertwined, has been fixed;
4454 ** the type system is now able to reason about the interaction
4455 between INTEGER and RATIO types more completely;
4456 ** APPEND, [N]REVERSE and NRECONC check that those their
4457 arguments, which must be proper lists, are really so;
4458 ** An array specialized to be unable to hold elements has been
4459 implemented, as required -- yes, really -- by ANSI;
4460 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4461 on malformed property lists;
4463 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4464 * incompatible packaging change: in line with Unix convention,
4465 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4466 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4467 * REQUIRE and PROVIDE are now optionally capable of doing something
4468 useful. See the documentation string for REQUIRE.
4469 * infrastructure for a managed SBCL contrib system: contributed
4470 modules in this release include:
4471 ** the ASDF system definition facility;
4472 ** an interface to the BSD Sockets API;
4473 ** an ACL-like convenience interface to the repl;
4474 (thanks to Kevin Rosenberg)
4475 ** an implementation of ROTATE-BYTE, with efficient implementation
4477 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4478 gives a closer approximation to the right answer than previously.
4479 (thanks to Raymond Toy)
4480 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4481 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4482 optional environment arguments, as required by ANSI.
4483 * fixed bugs in other functions taking environment objects, allowing
4484 calls with an explicit NIL environment argument to be compiled
4486 * fixed bug 228: primary return values from
4487 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4488 COMPILE or FUNCTION.
4489 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4490 :TYPE will no longer signal errors on innocuous objects.
4491 * fixed bug 231b: SETQ is better at respecting type declarations in
4492 the lexical environment.
4493 * fixed a bug in DEFCLASS: classes named by symbols with no or
4494 unprintable packages can now be defined.
4495 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4496 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4497 * fixed compiler failure related to checking types of functions.
4498 (reported by Robert E. Brown)
4499 * the compiler is now much more consistent in its error-checking
4500 treatment of bounding index arguments to sequence functions: in
4501 (SAFETY 3) code, errors will be signalled in almost all cases if
4502 invalid sequence bounding indices are passed to functions defined
4503 by ANSI to operate on sequences.
4504 * fixed a bug in the build procedure: documentation of SBCL-specific
4505 packages is now preserved and available in the final Lisp image.
4506 * lifted FDEFINITION lookup out of loops in the implementation of
4507 many list operations. (thanks to Robert E. Brown)
4508 * fixed a bug in the reader: the #n# reader macro now works for
4509 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4510 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4511 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4512 E. Brown and Tony Martinez respectively)
4513 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4514 SLOT-BOUNDP: in particular, it is now able to optimize them much
4515 better, and is now not vulnerable to having packages renamed.
4516 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4517 always called when a slot is not present in an instance. (thanks
4519 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4520 longer signal an error on unreading a character following EOF on
4521 the previous constituent stream. (thanks to Tony Martinez)
4522 * fixed some bugs revealed by Paul Dietz' test suite:
4523 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4524 not just nonnegative fixnums;
4525 ** the logical bit-array operators such as BIT-AND now accept an
4526 explicit NIL for their "opt-arg" argument (to indicate a
4527 freshly-consed result bit-array);
4528 ** ELT now signals an error on an invalid sequence index in safe
4530 ** the type system is now cleverer about negations of numeric
4531 types, and consequently understands the BIGNUM and RATIO types
4533 ** the type system is now cleverer about the interaction between
4534 INTEGER and RATIO types: while bugs still remain, many more
4535 cases are accurately computed;
4536 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4537 if it is in the last clause;
4538 ** CONSTANTLY now correctly returns a side-effect-free function in
4540 ** DECLARE is no longer treated as a special-operator; in
4541 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4542 * incremented fasl file version number due to the change in the
4543 DEFSTRUCT-SLOT-DESCRIPTION structure.
4545 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4546 * minor incompatible change: code processed by the "interpreter" or
4547 EVAL now has a compilation optimization policy of (DEBUG 2)
4548 (changed from (DEBUG 1)) to improve debuggability of interactive
4549 development, and to allow the use of the debug RETURN command in
4551 * an experimental implementation of the RETURN command for the
4552 debugger has been included. (thanks to Frederik Kuivinen)
4553 * fixed bug 62: constraints were not propagated into a loop.
4554 * fixed bug in embedded calls of SORT (reported and investigated by
4556 * fixed some bugs revealed by Paul Dietz' test suite:
4557 ** printing and reading of arrays with some dimensions having
4558 length 0 (thanks to Gerd Moellmann);
4559 ** BOA constructor with &AUX argument without a default value does
4560 not cause a type error;
4561 ** CONSTANTP now returns true for all self-evaluating objects.
4563 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4564 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4565 accessors that are related by inheritance, as specified in the
4566 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4567 Valtteri Vuorikoski)
4568 * The compiler is now able to inline functions that were defined in
4569 a complex lexical environment (e.g. inside a MACROLET).
4570 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4572 * Support for the upcoming FreeBSD-5.0 release has been included.
4573 (thanks to Dag-Erling Smorgrav)
4574 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4575 effect when it is not in a toplevel context.
4576 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4577 stand a better chance of being correct. (thanks to Gerd
4579 * fixed bug in COERCE, which now signals an error on coercing a
4580 rational to a bounded real type which excludes the expected
4582 * The compiler is now able to derive types more accurately from the
4583 COERCE and COMPILE functions.
4584 * fixed bug 223: functional binding is considered to be constant
4585 only for symbols in the CL package.
4586 * fixed bug 231: SETQ did not check the type of a variable being set
4587 (reported by Robert E. Brown)
4588 * A new optimization for MAKE-INSTANCE has been included, fixing
4589 various bugs (including relating to :ALLOCATION :CLASS slots and
4590 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4592 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4593 ** As required by ANSI, LOOP now disallows anonymous collection
4594 clauses such as COLLECT I in conjunction with aggregate boolean
4595 clauses such as THEREIS (= I 1);
4596 ** LOOP now signals an error when any variable is reused in the
4597 same loop (including the potentially useful construct analogous
4598 to WITH A = 1 WITH A = (1+ A);
4599 ** IT is only a special loop symbol within the first clause of a
4600 conditional loop clause;
4601 ** LOOP with a typed iteration variable over a hashtable now
4602 signals a type error iff it should.
4603 * fixed some other bugs revealed by Paul Dietz' test suite:
4604 ** FILE-STREAM now names the class previously known as FD-STREAM;
4605 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4606 argument) no longer signals an error;
4607 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4608 of the slot symbol, rather than using the current package
4609 ((:CONC-NAME "") continues to intern the slot's name in the
4611 * incremented fasl file version number, because of the incompatible
4612 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4613 of the new implementation of DEFINE-COMPILER-MACRO.
4615 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4616 * Support for building SBCL for MIPS platforms running in
4617 little-endian mode has now been checked in, and basic
4618 functionality on said platforms verified.
4619 * minor incompatible change: PCL now records the pathname of a file
4620 in which methods and the like are defined, rather than its
4622 * minor incompatible change: TRUENAME now considers the truename of
4623 a file naming a directory to be the pathname with :DIRECTORY
4624 component indicating that directory.
4625 * minor incompatible change: a NAMED clause in the extended form of
4626 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4627 reason for the previous behaviour is unclear.
4628 * more systematization and improvement of CLOS and MOP conformance
4629 in PCL (thanks to Gerd Moellman and Pierre Mai):
4630 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4632 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4633 primary methods with no specializers;
4634 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4636 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4637 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4638 FORWARD-REFERENCED-CLASSes; error reporting on
4639 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4641 ** SXHASH on CLOS instances now uses a slot internal to the
4642 instance to return different numbers on distinct instances,
4643 while preserving the same return value through invocations of
4645 ** DEFMETHOD signals errors when methods with longer incongruent
4646 lambda lists are added to generic functions;
4647 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4648 CLASS, as specified in AMOP;
4649 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4650 on the order returned by the primary method for classes of
4651 class STANDARD-CLASS;
4652 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4653 * fixed some bugs shown by Paul Dietz' test suite:
4654 ** DOLIST puts its body in TAGBODY;
4655 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4657 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4658 value producing form;
4659 ** if more variables are given to PROGV than values, extra
4660 variables are bound and made to have no value;
4661 ** NSUBSTITUTE on list arguments gets the right answer with
4663 ** ELT signals an error of type TYPE-ERROR when the index argument
4664 is not a valid sequence index;
4665 ** LOOP signals (at macroexpansion time) an error of type
4666 PROGRAM-ERROR when duplicate variable names are found;
4667 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4668 ** FUNCALL of special-operators now cause an error of type
4670 ** PSETQ now works as required in the presence of side-effecting
4671 symbol-macro places;
4672 ** NCONC accepts any object as its last argument;
4673 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4675 ** loop-for-as-package does not require a package to be explicitely
4677 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4679 * fixed bug 166: compiler preserves "there is a way to go"
4680 invariant when deleting code.
4681 * fixed bug 172: macro lambda lists with required arguments after
4682 &REST arguments now cause an error to be signalled. (thanks to
4684 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4685 bug. (thanks to Matthew Danish)
4686 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4688 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4689 arguments are lexically rebound. (thanks to Gerd Moellmann and
4691 * fixed bug 194: error messages are now more informative when there
4692 is no primary method applicable in a call to a generic
4693 function. (thanks to Gerd Moellmann)
4694 * fixed bug in command line argument checking (thanks to Julian
4696 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4697 (thanks to Matthew Danish)
4698 * incremented fasl file version number, because of the
4699 SXHASH-related changes in the layout of CLOS data structures
4701 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4702 * minor incompatible change: The runtime (the Unix executable named
4703 "sbcl") is now much pickier about the .core files it will load.
4704 Essentially it now requires .core files to descend from the same
4705 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4706 as the runtime does. (The intent is to prevent the crashes which
4707 can occur, and which can even be reported as mysterious failures,
4708 when people patch the sources or change the build parameters
4709 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4710 sbcl and .core files.)
4711 * fixed bug: VALUES-LIST is no longer optimized away.
4712 * fixed bug 142: The FFI conversion of C string values to Lisp
4713 string values no longer conses excessively. (thanks to Nathan
4714 Froyd porting Raymond Toy's fix to CMU CL)
4715 * began to systematize and improve MOP conformance in PCL (thanks to
4716 Nathan Froyd, Gerd Moellman and Pierre Mai):
4717 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4719 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4720 ** FINALIZE-INHERITANCE is now called on class finalization;
4721 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4722 argument precedence order.
4723 * fixed bug 202: The compiler no longer fails on functions whose
4724 derived types contradict their declared type.
4725 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4726 so it can be non-toplevel.
4727 * The fasl file version number has changed (because of the new
4728 implementation of DEFMACRO).
4729 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4730 safe code, that any length requirement by their type-specifier
4731 argument is valid. The exceptions to this are described in bug
4733 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4734 functions now check the types of their inputs as required by ANSI.
4735 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4736 introduced symbol is DECLAREd to be SPECIAL.
4737 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4738 * fixed bug: :COUNT argument to sequence functions may be negative
4739 * fixed bug: body of DO-SYMBOLS may contain declarations
4740 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4741 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4742 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4743 symbol macro only once
4744 * fixed printing of call frame when argument list is unavailable
4745 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4746 * compiler no longer signals WARNING on unknown keyword
4749 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4750 * A beta-quality port to the mips architecture running Linux,
4751 based on the old CMUCL backend, has been made. It has been tested
4752 on a big-endian kernel, and works sufficiently well to be able to
4753 rebuild itself; it has not been tested in little-endian mode.
4754 * fixed an inconsistency between gencgc.c and purify.c which made
4755 dumping/loading .core files unreliable
4756 * fixed bug 120a: The compiler now deals correctly with IFs where
4757 the consequent is the same as the alternative, instead of
4758 misderiving the return type. (thanks to Alexey Dejneka)
4759 * fixed bug 113: Logical pathnames are now dumpable (the logical
4760 host is resolved at load-time, throwing an error if it is not
4762 * fixed bug 174: FORMAT's error message is slightly clearer when a
4763 non-printing character is used in a format directive.
4764 * fixed several bugs in compiler checking of type declarations, i.e.
4765 violations of the Python "declarations are assertions" principle
4766 (thanks to Alexey Dejneka)
4767 * fixed several bugs in PCL's error checking (thanks to Gerd
4769 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4771 * fixed bug in compilation of functions as first class values
4772 (thanks to Antonio Martinez-Shotton)
4773 * The compiler's handling TYPE-ERRORs which it can prove will
4774 inevitably happen at runtime has been cleaned up and corrected
4775 in several ways. (thanks to Alexey Dejneka)
4776 * improved argument type checking for various basic arithmetic
4777 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4778 lavished on them in the past that they can be compiled in many
4779 ways in different special cases
4780 * fixed bug 181: compiler checks validity of user supplied type
4782 * cleaned up code flushing in optimization: Function calls which
4783 should signal errors for safety purposes (e.g. which ANSI says
4784 should signal errors when their arguments are of incorrect type)
4785 are no longer optimized away.
4786 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4787 * incremented fasl file version number, because changes in the
4788 implementation of sequence functions like COERCE caused
4789 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4790 in old inline expansions) to become undefined. (Actually these
4791 changes were later undone, so we might very well be binary
4792 compatible with 0.7.7 after all, but leaving the version number
4793 incremented seemed like the simplest and most conservative
4796 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4797 * An alpha-quality port to the parisc architecture running Linux,
4798 based on the old CMUCL backend, has been made. This, even more so
4799 than the other backends, should be considered still a work in
4800 progress; known problems include that the Linux kernel in 64-bit
4801 mode does not propagate the correct sigcontext structure to
4802 userspace, and consequently SBCL on a parisc64 kernel will not
4804 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4805 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4806 suppressed.) Also now that the compiler is looking at declarations
4807 in the environment, it checks optimization declarations as well,
4808 and suppresses inlining when (> DEBUG SPEED).
4809 * More fixes have been made to treatment of floating point exception
4810 treatment and other Unix signals. In particular, floating point
4811 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4812 * The detection and handling of control stack exhaustion (infinite
4813 or very deeply nested recursion) has changed. Stack exhaustion
4814 detection is now done by write-protecting pages at the OS level
4815 and applies at all optimization settings; when found, a
4816 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4817 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4818 be caught using IGNORE-ERRORS.
4819 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4820 correctly when transforming recursive LABELS functions to LETs.
4821 (thanks to Alexey Dejneka)
4822 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4823 that are names of constants or global variables.
4824 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4825 alien routines with docstrings.
4826 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4827 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4829 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4830 (thanks to Eric Marsden)
4831 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4832 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4833 * Bug fix: The SPARC backend can now compile functions involving
4834 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4835 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4836 to a functions expecting a PATHNAME-DESIGNATOR.
4837 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4838 lambda lists. (thanks to Alexey Dejneka)
4839 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4840 functions so that EXPORTing the name of the class doesn't cause
4841 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4842 to Antonio Martinez for reporting this)
4843 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4844 constant-folded without failing an assertion. (thanks to Einar
4845 Floystad Dorum for reporting this)
4846 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4847 types are now dealt with more correctly by the compiler.
4848 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4849 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4850 behaviour analogous to RENAME-FILE. This puts its behaviour more
4851 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4853 * The fasl file version number has changed again. (because of the
4854 bug fix involving the names of PCL MAKE-INSTANCE functions)
4856 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4857 * bug fix: Floating point exceptions are treated much more
4858 consistently on the x86/Linux and PPC/Linux platforms.
4859 * Array initialization with :INITIAL-ELEMENT is now much faster for
4860 cases when the compiler cannot open code the array creation, but
4861 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4862 array accesses have also seen a speed increase.
4863 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4864 specified. (This was at the root of some bad interactions between
4865 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4867 * bug fix: Internal error arguments for undefined functions are now
4868 computed correctly on the PPC/Linux platform.
4869 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4870 Raymond Toy's patch for CMU CL)
4871 * Support for the Solaris 9 operating environment has been included
4872 (thanks to Daniel Merritt)
4873 * A very ugly but hopefully complete draft of the missing FFI chapter
4874 of the manual has been created by reformatting the corresponding
4875 CMU CL manual chapter into (currently very ugly and incoherent)
4876 DocBook and bringing it up to date for SBCL behavior. Thus, the
4877 manual is now essentially complete, at least by my extreme
4878 once-and-only-once standards, whereby it's acceptable to refer to
4879 the doc strings of SB-EXT functions as the primary documentation.
4880 * The fasl file version number has changed again, due to cleanup of
4881 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4882 is no longer a static symbol.)
4884 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4885 * SBCL now builds with OpenMCL (version 0.12) as the
4886 cross-compilation host; also, more progress has been made toward
4887 bootstrapping under CLISP.
4888 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4890 * bug 158 fixed: The compiler can now deal with integer loop
4891 increments different from 1; fixing this turned out also to fix
4893 * bug 169 fixed: no more bogus warnings about using lexical bindings
4894 despite the presence of perfectly good SPECIAL declarations (thanks
4895 to David Lichteblau)
4896 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4897 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4898 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4900 * bug 180 fixed: Method combination specifications no longer ignore
4901 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4902 * bug fix: Structure type predicate functions now check their argument
4903 count as they should.
4904 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4905 correctly. (thanks to Pierre Mai)
4906 * minor incompatible change: The --noprogrammer option is deprecated
4907 in favor of the new --disable-debugger option, which is very similar.
4908 (The major difference is that it takes effect at a slightly different
4909 time at startup, causing handling of errors in --sysinit and
4910 --userinit files will be affected differently.) The
4911 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4912 been added to allow this functionality to be controlled from ordinary
4913 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4914 maintainers, who might want to run non-interactive scripts to
4915 build SBCL cores which will later be used interactively.)
4916 * minor incompatible change: The LOAD function no longer, when given
4917 a wild pathname to load, loads all files matching that pathname.
4918 Instead, an error of type FILE-ERROR is signalled.
4920 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4921 * bug 147 fixed: The compiler preserves its block link/count
4922 invariants more correctly now so that it doesn't crash. (thanks
4924 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4926 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4927 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4928 no-value-for-this-character as NIL (as specified by ANSI).
4929 * HOST-NAMESTRING on physical pathnames now returns a string that is
4930 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4931 (thanks to Christophe Rhodes)
4932 * The Alpha port handles icache flushing more correctly. (thanks to
4934 * More progress has been made toward bootstrapping under CLISP. (thanks
4935 to Christophe Rhodes)
4936 * The fasl file format has changed again, because dynamic loading
4937 on OpenBSD (which has non-ELF object files) motivated some cleanups
4938 in the way that foreign symbols are transformed and passed around.
4939 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4940 is no longer treated as whitespace by the reader, but instead as
4941 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4942 |A
\7fB|, instead of A as it used to.
4944 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4945 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4946 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4947 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4948 this as of 0.7.1.45, but was left out of the previous news section
4949 (thanks to Dan Barlow)
4950 * SBCL now runs on the Solaris operating system on SPARC architectures
4951 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4952 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4953 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4954 * SPARC backend cleanups, allowing builds of cores optimized for V8
4955 and V9 SPARCS, and also emission of code targeted to a particular
4956 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4958 * SBCL is closer to bootstrapping under CLISP, thanks to various
4959 fixes by Christophe Rhodes.
4960 * The fasl file format has changed again, to allow the compiler's
4961 INFO database to support symbol macros.
4962 * The user manual (in doc/) is formatted into HTML more nicely.
4963 (thanks to coreythomas)
4964 * The system is smarter about SUBTYPEP relationships, especially
4965 those involving NOT types (including types such as ATOM which are
4966 represented internally using NOT types). Thus SUBTYPEP is less
4967 likely to return (VALUES NIL NIL) in general, and in particular
4968 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4970 * The fasl file format has changed again, because the internal
4971 representation of types now includes a new slot to support the new
4972 SUBTYPEP-of-NOT-types logic.
4973 * (not a change in the main branch of SBCL, but a related prototype
4974 which can hopefully be merged into the main branch of SBCL in the
4975 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4976 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4977 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4978 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4979 dispatch macro character combinations. (thanks to Alexey Dejneka)
4980 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4981 that superficially look like logical namestrings correctly.
4982 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4984 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4985 default supplied-p) for &optional and &key arguments. (thanks to
4988 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4989 * incompatible change: The compiler is now less aggressive about
4990 tail call optimization, doing it only when (> SPACE DEBUG) or
4991 (> SPEED DEBUG). (This is an incompatible change because there are
4992 programs which relied on the old CMU-CL-style behavior to optimize
4993 away their unbounded recursion which will now die of stack overflow.)
4994 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4995 for non-GENCGC systems has been increased to 20M (since that
4996 seems much closer to the likely performance optimum for modern
4997 systems than the old 4M value was)
4998 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4999 and *DEBUG-PRINT-LEVEL*
5000 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5001 of CMU CL's support for SPARC, and various endianness and other
5002 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5003 * new syntactic sugar for the Unix command line: --load foo.bar is now
5004 an alternate notation for --eval '(load "foo.bar")'.
5006 ** The system now detects stack overflow and handles it gracefully,
5007 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5008 optimization settings. (This is a good thing in general, and
5009 its introduction in this version should be particularly timely
5010 for anyone whose code fails because of suppression of tail
5012 ** The system now hunts for the C variable "environ" in a more
5013 devious way, to avoid segfaults when the C library version differs
5014 between compile time and run time. (thanks to Christophe Rhodes)
5015 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5016 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5017 ** The compiler no longer issues bogus style warnings for undefined
5018 classes in the same source file as the DEFCLASSes which defined
5019 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5021 ** fixes in CONDITION class precedence list for undefined function
5022 errors (thanks to Alexei Dejneka)
5023 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5024 correctly. (thanks to Dan Barlow)
5025 ** portability fixes aiming at bootstrapping under CLISP (thanks
5026 to Dave McDonald and Christophe Rhodes)
5027 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5028 ** fixes in type translation and and type inference (thanks to
5030 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5031 ** various fixes in the new ports (thanks to Dan Barlow)
5032 * several changes related to debugging:
5033 ** suppression of tail recursion, as noted above
5034 ** stack overflow detection, as noted above
5035 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5036 is now the default. (For some time encapsulation has been more
5037 reliable than the breakpoint-based :ENCAPSULATE NIL
5038 implementation, at least on X86 systems; and I just noticed that
5039 encapsulation also seems closer to the spirit of the ANSI
5042 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5044 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5045 up properly again. (There was a packaging bug in 0.7.0 which
5046 left their definitions in SB-SYS::LOAD-FOREIGN and
5047 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5048 vital for most things which interface to C-level interfaces,
5049 like extensions working with sockets or databases or
5050 Perl-compatible regexes or whatever, and the need to fix
5051 this bug is the main reason that 0.7.1 was released so
5053 ** DEFGENERIC is now choosier about the methods it redefines, so that
5054 reLOADing a previously-LOADed file containing DEFGENERICs does
5055 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5056 cycle now works as it should. (thanks to Alexey Dejneka)
5057 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5058 fixed by Christophe Rhodes. (He actually submitted this patch
5059 months ago, and I delayed until after 0.7.0.)
5060 ** Bug 111 (internal compiler confusion about runtime checks on
5061 FUNCTION types) was fixed by Alexey Dejneka.
5062 * Some internal cleanups (getting rid of variables which aren't
5063 needed now that the byte interpreter is gone) caused the fasl
5064 file format number to change again.
5066 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5067 * major incompatible change: The default fasl file extension, i.e. the
5068 default extension for files produced by COMPILE-FILE, has changed
5069 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5071 ** There are many changes in the implementation of the compiler.
5072 SBCL is now essentially a compiler-only implementation of ANSI
5073 Common Lisp. EVAL still "interprets" a few special cases, but
5074 almost all the interesting cases are handled by creating
5075 a LAMBDA expression, calling COMPILE on it, then calling
5076 FUNCALL on the result.
5077 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5078 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5079 Since the code is newer, there might still be some new bugs
5080 (though not as many as before Martin Atzmueller's fixes:-). But
5081 the new code is substantially simpler and clearer, and hopefully
5082 any remaining bugs will be simpler, less fundamental, and more
5083 fixable then the bugs in the old code.
5084 ** The revised compiler is still a little unsteady on its feet.
5086 *** The debugging information it produces (particularly the names
5087 of FUNCTION objects) is sometimes much less useful than what
5088 the old compiler produced.
5089 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5090 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5091 within a MACROLET) has been temporarily weakened.
5092 ** There are new compiler optimizations for various functions:
5093 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5094 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5095 *** the math functions TRUNCATE, FLOOR, and CEILING
5096 *** the function-of-all-trades COERCE
5097 Mostly these should be transparent, but there's one
5098 potentially-annoying problem (bug 117): when the compiler
5099 inline-expands a function and does type analysis on the result,
5100 it can create control paths which have type mismatches, and
5101 when it can't prove that those control paths aren't taken,
5102 it will issue WARNINGs about the type mismatches. This is
5103 a particular problem in practice for the new sequence functions.
5104 It's not clear how this should be fixed, and for now, a
5105 workaround is given in the entry for 117 in the BUGS file.
5106 ** (Because of the interaction between the two previous items --
5107 occasional inlining problems and new inline expansions -- some
5108 of the new sequence function optimizations won't really kick in
5109 completely until debugging information, and then inlining, are
5110 straightened out in some future version.)
5111 * minor incompatible changes:
5112 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5113 DIRECTORY no longer implicitly promotes NIL slots of its
5114 pathname argument to :WILD. In particular, when you ask for the
5115 contents of a directory (which you used to be able to do without
5116 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5117 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5118 ** changes in behavior that ANSI explicitly defines to be
5119 implementation dependent:
5120 *** The new compiler-only implementation still conforms with ANSI,
5121 but acts a little different than before. Besides the obvious
5122 changes in performance tradeoffs (that the cost per form passed
5123 to EVAL has gone up, and the cost per form executed by EVAL
5124 has gone down), the behavior of the system changes a little
5125 because there are no longer any interpreted function objects.
5126 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5127 e.g. doing COMPILE on the output of interactive DEFUN is
5129 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5131 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5132 has changed from (:CL) to NIL.
5133 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5134 e.g. #\Newline and #\Tab, don't have names specified in the
5135 ANSI Common Lisp standard, is now based on their ASCII symbolic
5136 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5137 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5138 are no longer used for output.
5139 ** changes in internal implementation constants:
5140 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5141 4 million. (If your application spends a lot of time GCing and
5142 you have a lot of RAM, you might want to experiment with
5143 increasing it even more.)
5144 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5145 However, almost all old code should still continue to work without
5146 immediate update, as SB-C-CALL is now a (deprecated) nickname
5148 ** Old operator names in the style DEF-FOO are now deprecated in
5149 favor of new corresponding names DEFINE-FOO, for consistency with
5150 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5151 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5152 internal symbols, but a few supported extensions like
5153 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5154 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5155 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5156 etc. as you get deeper into recursive calls to the debugger
5157 command loop, instead of the old "5]", "5]]", "5]]]"
5158 sequence. (I was motivated to do this when squabbles between
5159 ILISP and SBCL left me very deeply nested in the debugger. In the
5160 short term, this change will probably provoke more ILISP/SBCL
5161 squabbles, but hopefully it will be an improvement in the long run.)
5162 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5163 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5164 function, since declaiming return types involving aliens is
5165 (1) annoyingly messy to do by hand and (2) vital to efficient
5166 compilation of code which calls such functions.
5167 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5168 longer reexported by the SB-EXT package. They're solely useful
5169 for alien code, so it seems more logical that you should get
5170 them from the SB-ALIEN package, not in SB-EXT.
5171 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5172 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5173 features. Instead, the code that they used to control is always
5174 built into the system.
5175 * many other bug fixes
5176 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5177 advantage of the new EVAL-WHEN stuff and to clean them up in
5178 general, and they are now more ANSI-compliant in a number of
5179 ways. Martin Atzmueller is responsible for a lot of this.
5180 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5182 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5183 *** correct ERROR type for various file operations
5184 *** some fixes for Lisp streams
5185 *** DEFMETHOD syntax checking
5186 *** changing old weird representation of debug information as
5187 strings (which, among their other deficiencies, don't transform
5188 correctly when you rename packages, and don't change their
5189 print representation when you change things like *PACKAGE*
5190 and *PRINT-LENGTH*) to symbols and lists of symbols
5191 He also made several improvements and fixed several bugs in DESCRIBE.
5192 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5194 *** misbehavior of WRITE-STRING/WRITE-LINE
5195 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5196 and several other LOOP problems as well
5197 *** DIRECTORY when similar filenames are present
5198 *** DEFGENERIC with :METHOD options
5199 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5200 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5201 *** argument ordering in FIND with :TEST option
5202 *** mishandled package designator argument in APROPOS-LIST
5203 *** various problems in the backquote readmacro
5204 *** a bug in APROPOS
5205 *** probably some others that I'm not describing very well here,
5206 since the CVS log documents them by reference to sbcl-devel
5207 messages, and the SourceForge archives aren't working well.:-(
5208 ** Dan Barlow improved the Alpha port (and is making progress on the
5209 PPC port, for those of you who think different).
5210 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5211 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5212 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5213 continues to work on the SPARC port (for those of you in a position
5214 to look down upon our little PC-compatible boxes from a great height).
5215 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5216 and uses that copy, rather than the current dynamic value, when
5217 it's trying to decide whether to truncate output. Thus e.g.
5218 (let ((*print-lines* 50))
5219 (pprint-logical-block (stream nil)
5221 (let ((*print-lines* 8))
5222 (print (aref possiblybigthings i) stream)))))
5223 should now truncate the logical block only at 50 lines, instead of
5224 often truncating it at 8 lines, as it did before.
5225 * The doc/cmucl/ directory, containing old CMU CL documentation
5226 from the time of the fork, is no longer part of the base system.
5227 SourceForge has shut down its anonymous FTP service, and with it
5228 my original plan for distributing the old CMU CL documentation
5229 there. For now, if you need these files you can download an old
5230 SBCL source release and extract them from it.
5231 * The fasl file version number changed again, for dozens of reasons,
5232 some of which are apparent above.
5234 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5235 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5236 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5237 patch, so that DISASSEMBLE output is much nicer.
5238 * The code in the SB-PROFILE package now seems reasonably stable.
5239 I still haven't decided what the final interface should look like
5240 (I'd like PROFILE to interact cleanly with TRACE, since both
5241 facilities use function encapsulation) but if you have a need
5242 for profiling now, you can probably use it successfully with
5243 the current CMU-CL-style interface.
5244 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5245 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5246 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5247 link now returns the dangling link itself, and for similar
5248 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5249 link itself. (In these cases the old code signalled an error and
5250 looped endlessly, respectively.) Thus, DIRECTORY now works even
5251 in the presence of dangling and cyclic symbolic links.
5252 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5253 is now a supported extension again, since the consensus on
5254 sbcl-devel was that it can be useful for ordinary development
5255 work, not just for debugging SBCL itself.
5256 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5257 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5258 that currently-defined functions might be redefined later with
5259 different return types.
5260 * Hash tables can be printed readably, as inspired by CMU CL code
5261 of Eric Marsden and SBCL code of Martin Atzmueller.
5262 * better error handling in CLOS method combination, thanks to
5263 Martin Atzmueller porting Pierre Mai's CMU CL patches
5264 * more overflow fixes for >16Mbyte I/O buffers
5265 * A bug in READ has been fixed, so that now a single Ctrl-D
5266 character suffices to cause end-of-file on character streams.
5267 In particular, now you only need one Ctrl-D at the command
5268 line (not two) to exit SBCL.
5269 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5271 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5272 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5273 does the right thing.
5274 * The implementation of some type tests, especially for CONDITION
5275 types, is now tidier and maybe faster, due to CMU CL code
5276 originally by Douglas Crosher, ported by Martin Atzmueller.
5277 * Some math functions have been fixed, and there are new
5278 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5279 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5280 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5281 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5282 likely to be built into sbcl-0.7.0.)
5283 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5284 CL, ported to SBCL by Martin Atzmueller)
5285 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5286 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5287 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5288 * There's a new slam.sh hack to shorten the edit/compile/debug
5289 cycle for low-level changes to SBCL itself, and a new
5290 :SB-AFTER-XC-CORE target feature to control the generation of
5291 the after-xc.core file needed by slam.sh.
5292 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5293 COMPILE-FILE is no longer supported, so that now every function
5294 gets an entry point, so that block compilation looks a little
5295 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5296 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5297 returns the number of bytes consed since the system started,
5298 rather than the number consed since the first time the function
5299 was called. (The new definition parallels ANSI functions like
5300 CL:GET-INTERNAL-RUN-TIME.)
5301 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5302 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5303 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5304 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5305 * Fasl file version numbers are now independent of the target CPU,
5306 since historically most system changes which required version
5307 number changes have affected all CPUs equally. Similarly,
5308 the byte fasl file version is now equal to the ordinary
5311 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5312 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5313 is no longer recognized. I apologize for this, because it was
5314 listed in SB-EXT as a supported extension, but I found that
5315 its existing behavior was poorly specified, as well as incorrectly
5316 specified, and it looked like too much of a mess to straighten it
5317 out. I have enough on my hands trying to get ANSI stuff to work..
5318 * many patches ported from CMU CL by Martin Atzmueller, with
5319 half a dozen bug fixes in pretty-printing and the debugger, and
5320 half a dozen others elsewhere
5321 * fixed bug 13: Floating point infinities are now supported again.
5322 They might still be a little bit flaky, but thanks to bug reports
5323 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5324 as flaky as they were.
5325 * The --noprogrammer command line option is now supported. (Its
5326 behavior is slightly different in detail from what the old man
5327 page claimed it would do, but it's still appropriate under the
5328 same circumstances that the man page talks about.)
5329 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5330 are now supported, and enabled by default. Thus, the compiler can
5331 handle many floating point and complex operations much less
5332 inefficiently. (Thus e.g. you can implement a complex FFT
5334 * The compiler now detects type mismatches between DECLAIM FTYPE
5335 and DEFUN better, and implements CHECK-TYPE more correctly, and
5336 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5337 thanks to patches from Martin Atzmueller.
5338 * various fixes to make the cross-compiler more portable to
5339 ANSI-conforming-but-different cross-compilation hosts (notably
5340 Lispworks for Windows, following bug reports from Arthur Lemmens)
5341 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5342 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5343 fixed thanks to Pierre Mai's CMU CL patches.
5344 * fixes to keep the system from overflowing internal counters when
5345 it tries to use i/o buffers larger than 16M bytes
5346 * fixed bug 45a: Various internal functions required to support
5347 complex special functions have been merged from CMU CL sources.
5348 (When I was first setting up SBCL, I misunderstood a compile-time
5349 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5350 * improved support for type intersection and union, fixing bug 12
5351 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5352 more obscure bugs as well
5353 * some steps toward byte-compiling non-performance-critical
5354 parts of the system, courtesy of patches from Martin Atzmueller
5355 * Christophe Rhodes has made some debian packages of sbcl at
5356 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5357 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5358 stable, but are nonetheless usable. When he's ready, I'd be happy
5359 to add them to the SourceForge "File Releases" section. (And if
5360 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5361 * new fasl file format version number (because of changes in
5362 internal representation of (OR ..) types to accommodate the new
5363 support for (AND ..) types, among other things)
5365 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5366 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5368 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5370 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5371 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5372 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5373 * DESCRIBE now works on structure objects again.
5374 * Most function call argument type mismatches are now handled as
5375 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5376 know whether the function will be redefined before the call is
5377 executed. (The compiler could flag local calls with full WARNINGs,
5378 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5379 it doesn't keep track of enough information to know whether calls
5380 are local in this sense.)
5381 * Compiler output is now more verbose, with messages truncated
5382 later than before. (There should be some supported way for users
5383 to override the default verbosity, but I haven't decided how to
5384 provide it yet, so this behavior is still controlled by the internal
5385 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5386 src/compiler/ir1util.lisp.)
5387 * Fasl file format version numbers have increased again, because
5388 support for the Gray streams extension changes the layout of the
5389 system's STREAM objects.
5390 * The Gray subclassable streams extension now works, thanks to a
5391 patch from Martin Atzmueller.
5392 * The full LOAD-FOREIGN extension (not just the primitive
5393 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5394 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5395 but like most other programs, it defaults to copying the Unix
5396 environment from the original process instead of starting the
5397 new process in an empty environment.
5398 * Extensions which manipulate the Unix environment now support
5399 an :ENVIRONMENT keyword option which doesn't smash case or
5400 do other bad things. The CMU-CL-style :ENV option is retained
5401 for porting convenience.
5402 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5403 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5405 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5407 * A patch from Martin Atzmueller seems to have solved the SIGINT
5408 problem, and as far as we know, signal-handling now works cleanly.
5409 (If you find any new bugs, please report them!)
5410 * The system no longer defaults Lisp source file names to types
5411 ".l", ".cl", or ".lsp", but only to ".lisp".
5412 * The compiler no longer uses special default file extensions for
5413 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5414 seems to expect a single default extension for all compiled code,
5415 and there's no compelling reason to try to stretch the standard
5416 to allow two different extensions.) Instead, byte-compiled files
5417 default to the same extension as native-compiled files.
5418 * Fasl file format version numbers have increased again, because
5419 a rearrangement of internal implementation packages made some
5420 dumped symbols in old fasl files unreadable in new cores.
5421 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5422 many fewer weird special cases.
5423 * Bug #17 (differing COMPILE-FILE behavior between logical and
5424 physical pathnames) has been fixed, and some related misbehavior too,
5425 thanks to a patch from Martin Atzmueller.
5426 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5427 by Tim Moore, ported to SBCL by Martin Atzmueller.
5428 * Martin Atzmueller fixed several filesystem-related problems,
5429 including bug #36, in part by porting CMU CL patches, which were
5430 written in part by Paul Werkowski.
5431 * More compiler warnings in src/runtime/ are gone, thanks to
5432 more patches from Martin Atzmueller.
5433 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5436 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5438 * DESCRIBE now works on CONDITION objects.
5439 * The debugger now handles errors which arise when trying to print
5440 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5442 * The build system now uses an additional file, customize-target-features.lisp,
5443 to allow local modifications to the target *FEATURES* list. (The point of
5444 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5445 debugging features enabled, without having to worry about propagating it
5446 into everyone's system when I do a "cvs update".) When no
5447 customize-target-features.lisp file exists, the target *FEATURES* list
5448 should be constructed the same way as before.
5449 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5450 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5451 warn about behavior which is undefined under the ANSI spec. Note: This
5452 is specified by ANSI, but it's not very popular with programmers.
5453 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5454 macro in the SBCL sources for an example of a workaround which you
5455 might use to make portable ANSI-standard code which does what you want.
5456 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5457 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5458 when it's used as a non-toplevel form. (This is required in order
5459 to implement the DEFCONSTANT-EQX macro.)
5460 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5461 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5462 funny things, due to bugs in the implementation of EVAL-WHEN
5463 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5464 non-toplevel DEFCONSTANTs are uncommon.)
5465 * The core file version number and fasl file version number have been
5466 incremented, because the old noncompliant DEFCONSTANT behavior involved
5467 calling functions which no longer exist, and because I also took the
5468 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5469 * fixed bug 1 (error handling before read-eval-print loop starts), and
5470 redid debugger restarts and related debugger commands somewhat while
5472 ** The QUIT debugger command is gone, since it did something
5473 rather different than the SB-EXT:QUIT command, and since it never
5474 worked properly outside the main toplevel read/eval/print loop.
5475 Invoking the new TOPLEVEL restart provides the same functionality.
5476 ** The GO debugger command is also gone, since you can just invoke
5477 the CONTINUE restart directly instead.
5478 ** The TOP debugger command is also gone, since it's redundant with the
5479 FRAME 0 command, and since it interfered with abbreviations for the
5481 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5483 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5484 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5485 some porting work by Martin Atzmueller)
5486 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5487 with a boatload of patches which he ported to SBCL. Now that those
5489 ** The system tries to make sure that its low-priority messages
5490 are prefixed by semicolons, to help people who like to use
5491 syntax highlighting in their ILISP buffer. (This patch
5492 was originally due to Raymond Toy.)
5493 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5494 patches originally written by Raymond Toy.
5495 ** The compiler understands coercion between single-value and
5496 multiple-VALUES type expressions better, getting rid of some very
5497 weird behavior, thanks to patches originally by Robert MacLachlan
5498 and Douglas Crosher.
5499 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5500 lambda lists, thanks to a patch originally by Pierre Mai.
5501 ** The system no longer bogusly warns about "abbreviated type
5503 ** The compiler gets less confused by inlining and RETURN-FROM,
5504 thanks to some patches originally by Tim Moore.
5505 ** The system no longer hangs when dumping circular lists to fasl
5506 files, thanks to a patch originally from Douglas Crosher.
5507 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5508 undefined function error.
5509 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5510 in structure slot initforms) for now, documented workaround instead:-|
5511 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5512 * fixed bug 5: added stubs for various Gray stream functions called
5513 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5514 installed, at least appropriate type errors are generated
5515 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5516 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5517 consistently in DEFMETHOD forms.
5518 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5519 it doesn't seem to affect SBCL after all
5520 * The C runtime system now builds with better optimization and many
5521 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5523 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5525 * The system is now under CVS at SourceForge (instead of the
5526 CVS repository on my home machine).
5527 * The new signal handling code has been tweaked to treat register
5528 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5529 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5530 downstream, e.g. in debug-int.lisp, has implicit dependencies
5531 on the unsignedness of integer representation of machine words,
5532 and that caused the system to bomb out with infinite regress
5533 when trying to recover from type errors involving signed values,
5534 e.g. (BUTLAST '(1 2 3) -1).)
5535 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5536 (This was one of the bugs Peter Van Eynde reported back in July.)
5537 * The system now uses code inspired by Colin Walters' O(N)
5538 implementation of MAP (from the cmucl-imp@cons.org mailing
5539 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5540 inline the MAP operation, and there is more than one
5541 sequence argument to the MAP call (so that it can't just
5542 do ETYPECASE once and for all based on the type of the
5543 single sequence argument). (The old non-inline implementation
5544 of the general M-argument sequence-of-length-N case required
5545 O(M*N*N) time when any of the sequence arguments were LISTs.)
5546 * The QUIT :UNIX-CODE keyword argument has been renamed to
5547 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5548 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5550 * Raymond Wiker's patches to port dynamic loading from Linux to
5551 FreeBSD have been added.
5552 * The BUGS file is now more nearly up to date, thanks in large part
5553 to Martin Atzmueller's review of it.
5554 * The debugger now flushes standard output streams before it begins
5555 its output ("debugger invoked" and so forth).
5556 * The core version number and fasl file version number have both
5557 been incremented, because of incompatible changes in the layout
5559 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5560 used to not be called for a saved Lisp image.)
5561 * Martin Atzmueller's version of a patch to fix a compiler crash,
5562 as posted on sbcl-devel 13 September 2000, has been installed.
5563 * Instead of installing Martin Atzmueller's patch for the
5564 compiler transform for SUBSEQ, I deleted the compiler transform,
5565 and transforms for some similar consing operations.
5566 * A bug in signal handling which kept TRACE from working on OpenBSD
5568 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5569 away by constant folding
5570 * The system now defines its address space constants in one place
5571 (in the Lisp sources), and propagates them automatically elsewhere
5572 (through GENESIS and the sbcl.h file). Therefore, patching the
5573 address map is less unnecessarily tedious and error-prone. The
5574 Lisp names of address space constants have also been systematized.
5575 * CVS tags like dollar-Header-dollar have been removed from
5576 the sources, because they have never saved me trouble and
5577 they've been source of trouble working with patches and other
5578 diff-related operations.
5579 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5580 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5582 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5584 * The system has been ported to OpenBSD.
5585 * The system now compiles with a simple "sh make.sh" on the systems
5586 that it's supported on. I.e., now you no longer need to tweak
5587 text in the target-features.lisp-expr and symlinks in src/runtime/
5588 by hand, the make.sh takes care of it for you.
5589 * The system is no longer so grossly inefficient when compiling code
5590 involving vectors implemented as general (not simple) vectors (VECTOR T),
5591 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5592 which dares to use the various sequence functions on non-simple
5593 vectors, takes less of a performance hit.
5594 * There is now a primitive type predicate VECTOR-T-P
5595 to test for the (VECTOR T) type, so that e.g.
5596 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5597 can now be compiled with some semblance of efficiency. (The old code
5598 turned the type declaration into a full call to %TYPEP at runtime!)
5599 * AREF on (VECTOR T) is still not fast, since it's still compiled
5600 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5601 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5602 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5603 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5604 without making full calls to SUBTYPEP at runtime.
5605 (Some analogous efficiency issues for non-simple vectors specialized to
5606 element types other than T, or for non-simple multidimensional arrays,
5607 have not been addressed. They could almost certainly be handled the
5608 same way if anyone is motivated to do so.)
5609 * The changes in array handling break binary compatibility, so
5610 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5611 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5612 instead of (VALUES T T).
5613 * By following the instructions that Dan Barlow posted to sbcl-devel
5614 on 2 July 2000, I was able to enable primitive dynamic object
5615 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5616 functionality is not implemented (since it calls ld to resolve
5617 library references automatically, requiring RUN-PROGRAM for its
5618 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5619 try to resolve library references) is now supported.
5620 * The system now flushes the standard output streams when it terminates,
5621 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5622 them at several other probably-convenient times, e.g. in each pass of
5623 the toplevel read-eval-print loop, and after evaluating a form given
5624 as an "--eval" command-line option. (These changes were motivated by a
5625 discussion of stream flushing issues on cmucl-imp in August 2000.)
5626 * The source transform for TYPEP of array types no longer assumes
5627 that an array whose element type is a not-yet-defined type
5628 is implemented as an array of T, but instead punts, so that the
5629 type will be interpreted at runtime.
5630 * There is now some support for cross-compiling in make.sh: each of
5631 the phases of make.sh has its own script. (This should be transparent
5632 to people doing ordinary, non-cross-compile builds.)
5633 * Since my laptop doesn't have hundreds of megabytes of memory like
5634 my desktop machine, I became more motivated to do some items on
5635 my to-do list in order to reduce the size of the system a little:
5636 ** Arrange for various needed-only-at-cold-init things to be
5637 uninterned after cold init. To support this, those things have
5638 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5639 symbols with such names are now uninterned after cold init).
5640 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5641 fasl files for cold load.
5642 ** Remove the old compiler structure pooling code (which used to
5643 be conditional on the target feature :SB-ALLOC) completely.
5644 ** Redo the representation of some data in cold init to be more compact.
5645 (I also looked into supporting byte compiled code at bootstrap time,
5646 which would probably reduce the size of the system a lot, but that
5647 looked too complicated, so I punted for now.)
5648 * The maximum signal nesting depth in the src/runtime/ support code has
5649 been reduced from 4096 to 256. (I don't know any reason for the very
5650 large old value. If the new smaller value turns out to break something,
5651 I'll probably just bump it back up.)
5652 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5654 * Many, many bugs reported by Peter Van Eynde have been added to
5655 the BUGS list; some have even been fixed.
5656 * While enabling dynamic object file loading, I tried to make the
5657 code easier to understand, renaming various functions and variables
5658 with less ambiguous names, and changing some function calling
5659 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5660 * While trying to figure out how to do the OpenBSD port, I tried to
5661 clean up some of the code in src/runtime/. In particular, I dropped
5662 support for non-POSIX signal handling, added various comments,
5663 tweaked the code to reduce the number of compilation warnings, and
5664 renamed some files to increase consistency.
5665 * To support the new automatic configuration functionality in make.sh,
5666 the source file target-features.lisp-expr has been replaced with the
5667 source file base-target-features.lisp-expr and the machine-generated
5668 file local-target-features.lisp-expr.
5669 * fixed a stupid quoting error in make.sh so that using CMU CL
5670 "lisp -batch" as cross-compilation host works again
5672 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5674 * DESCRIBE no longer tries to call itself recursively to describe
5675 bound/fbound values, so that it no longer fails on symbols which are
5676 bound to themselves (like keywords, T, and NIL).
5677 * DESCRIBE now works on generic functions.
5678 * The printer now prints less-screwed-up representations of closures
5679 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5680 * A private symbol is used instead of the :EMPTY keyword previously
5681 used to mark empty slots in hash tables. Thus
5682 (DEFVAR *HT* (MAKE-HASH-TABLE))
5683 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5684 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5685 now does what ANSI says that it should. (You can still get
5686 similar noncompliant behavior if bang on the hash table
5687 implementation with all the symbols you get back from
5688 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5689 This breaks binary compatibility, since tests for equality to
5690 :EMPTY are wired into things like the macroexpansion of
5691 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5693 * There's now a minimal placeholder implementation for CL:STEP,
5694 as required by ANSI.
5695 * An obscure bug in the interaction of the normal compiler, the byte
5696 compiler, inlining, and structure predicates has been patched
5697 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5698 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5700 * Missing ordinary arguments in a macro call are now detected even
5701 when the macro lambda list contains &KEY or &REST.
5702 * The debugger no longer complains about encountering the top of the
5703 stack when you type "FRAME 0" to explicitly instruct it to go to
5704 the top of the stack. And it now prints the frame you request even
5705 if it's the current frame (instead of saying "You are here.").
5706 * As specified by ANSI, the system now always prints keywords
5707 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5709 * The default initial SIZE of HASH-TABLEs is now smaller.
5710 * Type information from CLOS class dispatch is now propagated
5711 into DEFMETHOD bodies, so that e.g.
5712 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5714 is now basically equivalent to
5715 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5716 (DECLARE (TYPE SINGLE-FLOAT X))
5718 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5719 operation, without having to do run-time type dispatch.
5720 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5721 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5722 * Since I don't seem to be making big file reorganizations very often
5723 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5724 is overflowing my ability to conveniently back them up), I've finally
5725 checked the system into CVS. (The CVS repository is on my home system,
5726 not at SourceForge -- putting it on SourceForge might come later.)
5727 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5728 high-level GC-NOTIFY-FOO functions send their output. (There's
5729 still very little control of where low-level verbose GC functions
5730 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5731 less than it used to -- the GC-NOTIFY-FOO functions are now under
5732 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5733 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5734 in only one place in the source code, and propagates it automatically
5735 everywhere that it's needed. Thus e.g. when I bump the version from
5736 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5737 * The C source files now include boilerplate legalese and documentation
5738 at the head of each file (just as the Lisp source files already did).
5739 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5740 to his page will be replaced with a link to his new CLiki service.
5742 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5744 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5745 * The build process now looks for GNU make under the default name "gmake",
5746 instead of "make" as it used to. If GNU make is not available as "gmake"
5747 on your system, you can change this default behavior by setting the
5748 GNUMAKE environment variable.
5749 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5750 can build without error under CMU CL.
5752 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5754 * There is now a partial SBCL user manual (with some new text and some
5755 text cribbed from the CMU CL manual).
5756 * The beginnings of a profiler have been added (starting with the
5757 CMU CL profiler and simplifying and cleaning up). Eventually the
5758 main interface should be through the TRACE macro, but for now,
5759 it's still accessed through vaguely CMU-CL-style functions and macros
5760 exported from the package SB-PROFILE.
5761 * Some problems left over from porting CMU CL to the new
5762 cross-compilation bootstrap process have been cleaned up:
5763 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5764 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5765 part when getting rid of the compiler *BACKEND* stuff.)
5766 ** The value of *NULL-TYPE* was screwed up, because it was
5767 being initialized before the type system knew the final
5768 definition of the 'NULL type. This screwed up several key
5769 optimizations in the compiler, causing inefficiency in all sorts
5770 of places. (I found it because I wanted to understand why
5771 GET-INTERNAL-RUN-TIME was consing.)
5772 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5773 PROCLAIM FTYPE information. Unfortunately this broke binary
5774 compatibility again, since now the forms output by DEFGENERIC
5775 to refer to functions which didn't exist in 0.6.3.
5776 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5777 can use the new (as of 0.6.3) transform for SOME into MAP into
5779 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5780 values to (INTEGER 0 1000000), so that the time code will no longer
5781 occasionally get blown up by Linux returning 1000000 microseconds
5782 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5783 its output conform to the ANSI spec. (Alas, this makes its output
5784 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5785 * A full call to MAP NIL with a single sequence argument no longer conses.
5786 * fixes to problems pointed out by Martin Atzmueller:
5787 * The manual page no longer talks about multiprocessing as though
5788 it were currently supported.
5789 * The ILISP support patches have been removed from the distribution,
5790 because as of version 5.10.1, ILISP now supports SBCL without us
5791 having to maintain patches.
5792 * added a modified version of Raymond Toy's recent CMU CL patch for
5793 EQUALP comparison of HASH-TABLE
5795 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5797 * The system still can't cross-compile itself with
5798 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5799 entails), but at least it can compile more of itself that way
5800 than it used to be able to, and various buglets which were uncovered
5801 by trying to cross-compile itself that way have now been fixed.
5802 * This release breaks binary compatibility again. This time
5803 at least I've incremented the FASL file format version to 2, so that the
5804 problem can be detected reliably instead of just causing weird errors.
5805 * various new style warnings:
5806 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5807 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5808 ** using the lexical binding of a variable named in the *FOO* style
5809 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5810 as specified by ANSI.
5811 * *RANDOM-STATE* is no longer automatically initialized from
5812 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5813 default behavior of the system is to repeat its behavior every time
5814 it's run. If you'd like to change this behavior, you can always
5815 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5816 old convention there was no comparably easy way to get the system to
5817 repeat its behavior every time it was run.
5818 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5819 FTYPE declarations has been removed, in favor of their ANSI
5820 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5821 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5822 the types of their sequence arguments can be determined at compile time.
5823 This is done through a new open code expansion for MAP which eliminates
5824 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5825 argument types can be determined at compile time.
5826 * The optimizer now transforms COERCE into an identity operation when it
5827 can prove that the coerced object is already of the correct type. (This
5828 can be a win for machine generated code, including the output of other
5829 optimization transforms, such as the MAP transform above.)
5830 * Credit information has been moved from source file headers into CREDITS.
5831 * Source file headers have been made more standard.
5832 * The CASE macro now compiles without complaining even when it has
5835 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5837 * (Note that the way that the PCL macroexpansions were rewritten
5838 to accommodate the change in DEFGENERIC below breaks binary
5839 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5840 not run under sbcl-0.6.2. Once we get out of alpha releases,
5841 i.e. hit release 1.0.0, we'll probably try to maintain binary
5842 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5843 and sbcl-1.4.4. Until then, however, it might be fairly common
5844 for maintenance releases to break binary compatibility.)
5845 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5847 * The reporting of unhandled signals has been changed to print some
5848 explanatory text as well as the report form. (Previously only
5849 the report form was printed.)
5850 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5851 it defines, so that the compiler no longer issues undefined function
5852 warnings for compiled-but-not-yet-loaded generic functions.
5853 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5854 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5855 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5856 section of the ANSI spec are supported.
5857 * The "" nickname for the "KEYWORD" package has been removed.
5858 The reader still handles symbol tokens which begin with a package marker
5859 as keywords, but it doesn't expose its mechanism for doing so in the
5860 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5861 * The system now issues STYLE-WARNINGs for contradictory TYPE
5862 proclamations. (Warnings for contradictory FTYPE proclamations would
5863 be nice too, but those can't be done usefully unless the type system
5864 is made smarter about FUNCTION types.)
5865 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5866 systematized, so that "*target-*.lisp is supposed to exist only on the
5867 target and imply that there's a related file which exists on the
5868 host, and *host-*.lisp is supposed to exist only on the host and imply
5869 that there's a related file which exists on the target. This involves a
5870 lot of renaming. Hopefully the acute confusion caused by the renaming
5871 will be justified by the reduction in chronic confusion..
5872 ** runtime-type.lisp -> early-target-type.lisp
5873 ** target-type.lisp -> late-target-type.lisp
5874 ** early-host-format.lisp -> early-format.lisp
5875 ** late-host-format.lisp -> late-format.lisp
5876 ** host-error.lisp -> misc-error.lisp
5877 ** early-error.lisp -> early-target-error.lisp
5878 ** late-error.lisp -> late-target-error.lisp
5879 ** host-defboot.lisp -> early-defboot.lisp
5880 ** code/misc.lisp -> code/target-misc.lisp
5881 ** code/host-misc.lisp -> code/misc.lisp
5882 ** code/numbers.lisp -> code/target-numbers.lisp
5883 ** code/early-numbers.lisp -> numbers.lisp
5884 ** early-host-type.lisp -> early-type.lisp
5885 ** late-host-type.lisp -> late-type.lisp
5886 ** host-typep.lisp -> typep.lisp
5887 ** load.lisp -> target-load.lisp
5888 ** host-load.lisp -> load.lisp
5889 ** host-disassem.lisp -> disassem.lisp
5890 ** host-insts.lisp -> insts.lisp
5891 ** byte-comp.lisp -> target-byte-comp.lisp
5892 ** host-byte-comp.lisp -> byte-comp.lisp
5893 ** host-signal.lisp -> signal.lisp
5894 ** host-defstruct.lisp -> defstruct.lisp
5895 ** late-target-type.lisp -> deftypes-for-target.lisp
5896 Furthermore, several other previously target-only files foo.lisp (e.g.
5897 hash-table.lisp and random.lisp) have been split into a target-and-host
5898 foo.lisp file and a target-only target-foo.lisp file, with their key type
5899 definitions in the target-and-host part, so that the cross-compiler will
5900 know more about target types.
5901 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5902 gone away. In their place are various *BACKEND-FOO* variables
5903 corresponding to the slots of the old structure.
5904 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5905 into the target SBCL has been fixed.
5906 * The chill.lisp system for loading cold code into a running SBCL
5908 * Support for the CMU CL "scavenger hook" extension has been removed.
5909 (It was undocumented and unused in the CMU CL sources that SBCL was
5910 derived from, and stale in sbcl-0.6.1.)
5911 * Various errors in the cross-compiler type system were detected
5912 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5913 (enabling various consistency checks). Many of them were fixed,
5914 but some hard problems remain, so the compiler is back to
5915 running without *TYPE-SYSTEM-INITIALIZED* for now.
5916 * As part of the cross-compiler type system cleanup, I implemented
5917 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5918 * I have started adding UNCROSS calls throughout the type system
5919 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5920 on cross-compiler input files will be able to go away, and various
5922 * CONSTANTP now returns true for quoted forms (as explicitly required
5925 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5927 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5928 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5929 (MAKE-LIST -1). In the longer term, it ought to become true
5930 that declarations are assertions even at SAFETY 1. For now, it's not
5931 quite true even at SAFETY 3, but it's at least more nearly true..
5932 (Note that this change seems to increases the size of the system by
5933 O(5%) and to decrease the speed of the compiler by 20% or more.)
5934 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5935 for the problem of printing dozens of lines of distracting information
5936 about low-level system machinery as part of the top stack frame
5937 on entry to the debugger when an undefined function was called.
5938 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5939 is not reset to COMMON-LISP-USER.
5940 * Compilation of stuff related to dyncount.lisp has been made conditional
5941 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5942 smaller. The various dyncount-related symbols have been moved into
5943 a new "SB-DYNCOUNT" package.
5944 * tty-inspect.lisp has been renamed to inspect.lisp.
5945 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5946 feature has gone away. (When we eventually port to other flavors of
5947 libc and/or Unix, we'll try to make the differences between flavors
5948 invisible at the user level.)
5949 * Various other *FEATURES* tags, and/or their associated conditionals,
5950 have been removed if obsolescent, or given better documentation, or
5951 sometimes given more-mnemonic names.
5953 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5955 * tidied up "make.sh" script
5956 * tidied up system directory structure
5957 * better "clean.sh" behavior
5958 * added doc/FOR-CMUCL-DEVELOPERS
5959 * many many small tweaks to output format, e.g. removing possibly-confusing
5960 trailing #\. character in DESCRIBE-INSTANCE
5961 * (EQUALP #\A 'A) no longer signals an error.
5962 * new hashing code, including EQUALP hashing
5963 * tidied up Lisp initialization and toplevel
5964 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5965 * command line argument processing
5966 * added POSIX-GETENV function to deal with Unix-ish environment variables
5967 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5968 terminating SBCL on EOF
5969 * non-verbose GC by default
5970 * There is no more "sbcl" shell script; the sbcl file is now the C
5971 runtime executable (just like CMU CL).
5972 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5974 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5975 symbol and package information as Lisp native symbol and package objects
5976 instead of strings naming symbols and strings naming packages. This way,
5977 whenever packages are renamed (as in warm init), debug information is
5978 transformed along with everything else.
5979 * tweaked the optimization policy declarations which control the building
5980 of SBCL itself. Now, among other things, the system no longer saves
5981 source location debugging information. (This helps two problems at once
5982 by reducing SBCL size and by keeping SBCL from trying to look for its
5983 sources -- which may not exist -- when reporting errors.)
5984 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5985 debugging and testing purposes
5986 * cleaned up printing, making the printer call PRINT-OBJECT for
5987 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5988 methods, giving nearly-ANSI behavior
5989 * converted almost all special variables to use *FOO* naming convention
5990 * deleted PARSE-TIME functionality, since it can be done portably
5991 * moved some files out of cold init into warm init
5992 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5994 * regularized formatting of source files
5995 * added an install.sh script
5996 * fixed ridiculous memory usage of cross-compiler by making
5997 compiler/alloc.lisp not try to do pooling unless it can hook
5998 itself into the GC of the cross-compilation host. Now the system
5999 builds nicely on my old laptop.
6000 * added :SB-ALLOC in target-features.lisp-expr
6001 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6002 was not implemented)
6003 * re-did condition handling and note reporting in the compiler. Notes
6004 are no longer handled by signalling conditions. Style warnings
6005 and warnings are handled more correctly and reported in such a way
6006 that it's easy to find one or the other in your output (so that you
6007 can e.g. figure out which of many problems caused COMPILE-FILE to
6009 * changed the severity of several compiler warnings from full WARNING
6010 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6011 compiler note reporting so that it doesn't use the condition system
6012 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6013 COMPILE-FILE command)
6014 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6015 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6016 no longer supported, since their implementation was deeply intertwingled
6017 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6018 * removed bogus "support" for compiler macros named (SETF FOO), and
6019 removed the compiler macro for SETF INFO (but only after making a fool
6020 of myself on the cmucl-imp mailing list by posting a bogus patch for
6021 DEFINE-COMPILER-MACRO..)
6022 * Compiled files containing forms which have side effects on the Lisp
6023 reader (such as DEFPACKAGE forms) are now handled more correctly.
6024 (Compiler queuing of top level lambdas has been suppressed by setting
6025 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6026 * deleted various currently-unused source files, e.g. gengc.lisp. They
6027 may be added back at some point e.g. when porting to other architectures,
6028 but until they are it's distracting to distribute them and to try to
6030 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6031 there were so many of them they're just distractions, and UNCROSS is
6032 known to be able to handle the current sources
6033 * moved PROFILE functionality into TRACE, so that it will be clear
6034 how the wrapping and unwrapping of functions when you profile them
6035 interacts with the wrapping and unwrapping of functions when you
6036 trace them. (Actually, the functionality isn't there yet, but at least
6037 the interface specification is there. Hopefully, the functionality will
6038 arrive with some future maintenance release.)
6039 * removed host-oops.lisp
6040 * changed signature of QUIT function to allow UNIX-CODE argument
6041 * fixed READ-SEQUENCE bug
6042 * tweaked verbose GC output so that it looks more like the progress
6043 output that ANSI specifies for functions like LOAD
6044 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6045 * added <http://sbcl.sourceforge.com> to the banner information printed by