1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.46:
3 * bug fix: fix mach port rights leaks in mach exception handling code on
4 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
6 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
7 * enhancement: redefinition warnings for macros from different files. (lp#434657)
8 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
9 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
10 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
11 processed using EVAL -- now the appropriate toplevel form is reported instead.
12 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
13 declarations. (lp#726331)
14 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
15 that NIL/NULL is excluded from the type.
16 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
18 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
20 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
21 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
22 stack-allocated values out of their dynamic-extent. (lp#310175)
23 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
24 x86-64 builds caused a type-error.
25 * bug fix: calling COMPILE with something else than a lambda-expression as the
26 second argument reports a more sensible error. (lp#718905)
27 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
28 are detected. (lp#520607)
29 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
31 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
32 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
33 methods. (regression from 1.0.45.18)
34 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
35 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
36 * bug fix: several foreign functions accepting string also accepted NIL and
37 consequently caused a memory fault at 0 now signal a type-error instead.
39 * bug fix: under rare circumstances, constraint propagation could rewrite a
40 variable reference to refer to a variable not in scope, causing an error
41 during physical environment analysis when attempting to close over the
43 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
45 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
46 * enhancement: largefile support on Solaris.
47 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
49 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
50 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
52 * optimization: ERROR and CERROR are approximately 5 times faster.
53 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
54 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
55 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
56 up instance creation in those cases.
57 * optimization: arithmetic operations with multiple constant arguments in now
58 have them reduced at compile-time. (lp#676414)
59 * optimization: determining current character position on string-streams for
60 pretty-printing was overly slow.
61 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
62 lifetime analysis to overwrite closed-over variables (lp#681092).
63 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
64 were not handled correctly (lp#713063).
65 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
67 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
69 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
70 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
71 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
72 unintern the wrong symbol with the same name. (lp#693796)
73 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
74 making it possible to restore the initial table if it has been messed up.
77 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
78 * enhancement: ~/ and ~user/ are treated specially in pathnames.
79 Refer to documentation for details.
80 * enhancement: ASDF has been updated to version 2.010.
81 * optimization: mutated closed-over variables that are only accessed by
82 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
83 declared to be DYNAMIC-EXTENT) are stored directly in their containing
84 stack frame, rather than allocating a VALUE-CELL (lp#586103).
85 * optimization: UNWIND-PROTECT cleanup functions are now declared
87 * bug fix: backtracing function with &REST arguments now shows the full
88 argument list. (lp#310173)
89 * bug fix: return types for functions with complex lambda-lists are now
90 derived properly (lp#384892)
91 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
92 long string arguments slowed the compiler down to a crawl.
93 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
94 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
95 in the DEFMETHOD body.
96 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
97 messages, being instead replaced with the corresponding function name.
98 * bug fix: don't derive overly complex unions of numeric types for arithmetic
99 operators. (lp#309448)
101 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
102 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
103 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
104 * enhancement: ALLOCATION-INFORMATION also provides the page the object
106 * enhancement: default dynamic-space size can be configured at build-time
107 without touching source, using the --dynamic-space-size argument to make.sh.
108 * enhancement: DESCRIBE recognizes symbols naming optimization policy
109 qualities, and mentions ALWAYS-BOUND declarations.
110 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
112 * enhancement: ASDF has been updated to 2.009.
113 * enhancement: the system detects known type-erros in calls better,
114 signalling a full warning about violated proclaimed FTYPEs and violations
115 of derived FTYPEs within the same file, including self-calls.
116 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
117 * optimization: constant-folding exploits numeric and character types, in
118 addition member types.
119 * optimization: numeric, character and member types that are inhabited by
120 exactly one value are tested with EQL.
121 * optimization: more conditional branches are eliminated during IR1.
122 Branches are simplified before performing if/if-conversion, and simple
123 equivalent branches (that only read the same constant or variable) are
125 * improvements to the Windows port:
126 ** change: canonical unparsing form for pathname namestrings now uses / as
127 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
128 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
129 on Windows. (thanks to Kalyanov Dmitry)
130 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
132 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
133 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
134 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
135 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
137 * bug fix: interrupts arriving during CL:OPEN caused an error.
138 * bug fix: overeager character buffering could cause input to block
139 spuriously when reading from a pipe (lp#643686)
140 * bug fix: more efficient timer expiry should avoid starvation on systems
141 where number of SIGALRMs per second is restricted. (lp#375515)
142 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
143 * bug fix: compile-times no longer scale linearly with the size of
144 quoted lists in source-code. (lp#654289)
145 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
146 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
147 so badly. (lp#654485)
148 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
149 an error for eg. STRUCTURE. (lp#458015)
150 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
151 (lp#613871, thanks to Roman Marynchak)
152 * bug fix: more reliable &REST list type derivation. (lp#655203)
153 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
154 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
155 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
156 also declared NOTINLINE. (lp#655581)
157 * bug fix: the compiler could attempt to emit constant left shifts of
158 greater value than n-word-bits. (lp#309063)
159 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
160 type information for the function being set. (lp#659220)
161 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
162 containing self-calls were recompiled with a new signature, and failed
163 to warn when a self-call using the old signature was left in. (lp#655126)
164 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
165 :DEFAULT when the default external had character size other than 8 bits.
167 * bug fix: derived types of functions in the same file were implicitly
168 trusted, leading to potential heap corruption when those function were
169 defined incompatibly. (lp#657499)
170 * bug fix: existing ASDF source registries are ignored when building
172 * bug fix: short-form DEFSETF checks that the second argument is a symbol
173 (lp#655824, thanks to Roman Marynchak)
174 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
175 package-lock violation was detected. (lp#660752)
176 * bug fix: the system can store different docstrings for a single function
177 under different names. (lp#661631, regression from 1.0.29.24)
178 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
179 properly. (lp#384801)
180 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
181 of specified length could confuse the type derivation in unsafe code.
183 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
184 fork with multiple Lisp threads running is made on every platform,
185 not just Darwin. (lp#451111)
186 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
187 around when core was saved, which could cause undefined behaviour when the
189 * bug fix: Allow UNTRACE of functions that are no longer defined
190 (lp#667657, thanks to Attila Lendvai)
191 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
192 compile-time warning (lp#664373, thanks to Stas Boukarev)
194 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
195 * incompatible change: FD-STREAMS no longer participate in the serve-event
196 event-loop by default. (lp#316072)
197 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
198 affects streams from CL:OPEN.
199 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
200 default, but this is liable to change: applications needing serve-event
201 for socket streams should explicitly request it using :SERVE-EVENTS T
203 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
205 * enhancement: CLOS effective method functions and defclass slot typechecking
206 function now have debug names for use in backtraces and profiles.
207 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
209 * enhancement: symbols are printed using fully qualified names in several
210 error and warning messages which are often associated with package
211 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
212 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
213 thanks to Andrew Golding)
214 * bug fix: reading /proc files on Linux works. (lp#425199)
215 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
217 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
218 breaking code that tried to write the value of a printer control variable.
219 (lp#581564, thanks to Stas Boukarev)
220 * bug fix: WRITE compiler macro did not handle output stream designators
221 correctly. (lp#598374, thanks to Stas Boukarev)
222 * bug fix: better availability of names of foreign functions in backtraces
223 on Linux. (lp#626962, thanks to Stas Boukarev)
224 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
225 lp#627581, thanks to Josh Elsasser and Jim Wise)
226 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
227 thanks to Josh Elsasser)
228 * bug fix: using aliases for builtin classes as defmethod specializers
229 without adding DEFTYPEs for them works. (lp#618387)
230 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
232 * bug fix: legally dynamic-extent lists and vectors used as
233 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
234 * bug fix: inline-expansion creating references to dead lambda-variables
235 (lp#454681, thanks to Alexey Dejneka)
236 * bug fix: better error message for bogus numerical arguments to RANDOM.
237 (lp#598986, thanks to Stas Boukarev)
238 * bug fix: the compiler occasionally inlined references from incompatible
239 environments occurs. (lp#308951)
240 * bug fix: the compiler threw an error when trying to compile a local
241 function (labels or flet) known to take a specialized complex argument.
242 (not in launchpad, reported by sykopomp in #lispgames)
243 * bug fix: package-locks failed to protect against compile-time effects of
244 DEFUN when the symbol previously had a macro definition. (lp#576637)
245 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
246 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
247 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
248 * bug fix: evaluation in debugger REPL works using the global context when
249 in frames that do not have sufficient debug information.
250 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
252 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
254 * bug fix: interrupt taking longer than the requested period caused SLEEP
255 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
257 changes in sbcl-1.0.42 relative to sbcl-1.0.41
259 ** Cross-compilation host is now specified to make.sh using
260 command-line argument --xc-host=<command> instead of a positional
261 argument. (thanks to Daniel Herring)
262 ** Install location can be specified to make.sh using command-line
263 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
264 * optimization: The default implementation of
265 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
266 * enhancement: Explicit memory barrier operations are now available for use
267 by multithreaded code. See documentation for details.
268 * enhancement: Experimental support for threading on Linux/PPC.
269 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
270 * bug fix: EXPT signals an error if first argument is a zero and second
271 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
272 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
273 (lp#576594, thanks to Roman Marynchak)
274 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
275 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
277 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
278 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
279 cached, leading to many fewer expensive calls to
280 COMPUTE-APPLICABLE-METHODS.
281 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
282 CLASS argument, search for and call an appropriate optimized ctor function
284 * bug fix: WRITE always returns the correct value.
286 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
287 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
288 * bug fix: Name conflicts between symbols passed as arguments to a single
289 call to IMPORT no longer add multiple symbols with the same name to the
290 package (detectable via DO-SYMBOLS).
291 * bug fix: support building without the dlshim on darwin x86 and x86-64
293 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
295 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
296 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
298 * bug fix: linkage-table entries on PPC now no longer overflow their
299 space allocation (potentially causing crashes if they are written out
301 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
302 platforms, preventing the GC from seeing stale pointers on the control
303 stack in subsequent GCs (which would, and does, break invariants).
304 * bug fix: 32-bit unicode external formats now work on big-endian systems.
305 * bug fix: Literal characters with code points greater than about 32767
306 now work on PPC UNICODE builds.
307 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
308 high order bits are explicitly cleared out. In some contrived situations,
309 this could lead to wrong results in mixed real/complex float arithmetic.
310 * bug fix: Fix function/macro redefinition warnings when building with
311 clisp. (lp#576787, thanks to Josh Elsasser)
312 * new platform: experimental support for ppc/openbsd (thanks to Josh
314 * bug fix: Floating-point traps now work on ppc/linux.
316 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
317 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
318 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
319 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
320 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
321 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
322 SB-THREAD:GRAB-MUTEX.
323 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
324 contain additional data structures and tools for concurrent programming;
325 at the moment it contains a lock-free queue, and a lock-free mailbox
327 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
328 GET-MUTEX but takes &key rather than &optional parameters. Also added
329 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
331 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
332 SB-THREAD:WAIT-ON-SEMAPHORE.
333 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
335 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
336 conditions to defer the deadline for forever.
337 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
339 * enhancement: errors from NO-APPLICABLE-METHOD and
340 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
341 generic function call.
342 * enhancement: SB-BSD-SOCKET improvements
343 ** sockets and socket streams now have a more informative printed
344 representation based on the corresponding SOCKET-NAME and
346 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
348 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
349 CL:CLOSE when appropriate, and no longer disassociates the stream
350 from the socket if close failed. (lp#543951)
351 * improvements to the instrumenting profiler
352 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
353 ** optimization: counters no longer use locks for the overflow mode.
354 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
355 incurred an off-by-one miscount.
356 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
357 * enhancement: improved DEFMETHOD pretty-printing.
358 * enhancement: perform range reduction when arguments are too large for
359 x87's transcendentals (instead of returning 0). (lp#327192)
360 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
361 some of CL-PPCRE's macros. (lp#570079)
362 * enhancement: our machine code is slightly less hostile to valgrind on
364 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
365 to Robert Swindells and Aleksej Saushev)
366 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
367 * bug fix: a rare case of startup-time page table corruption.
368 * bug fix: a semaphore with multiple waiters and some of them unwinding due
369 to timeouts could be left in an inconsistent state.
370 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
371 * bug fix: misoptimization of multiplication by one in
372 (SB-C::FLOAT-ACCURACY 0) policies.
373 * bug fix: miscounts in SB-PROFILE.
374 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
375 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
376 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
377 up itself" (March 2010) for further details.
378 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
379 against length of the list if the element is found before the specified
380 END is reached. (thanks to Alec Berryman, lp#554385)
381 * bug fix: errors signalled during package graph modification no longer
382 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
383 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
384 :SB-DOC feature. (lp#552564)
385 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
386 * bug fix: more robust runtime executable path detection. (lp#375549)
387 * bug fix: GCD always returns positive values. (lp#413680)
388 * bug fix: Converting division to multiplication by reciprocal handles
390 * bug fix: We were too eager in eliding range reduction tests on x87.
391 The maximal magnitude is 2^63, not 2^64.
392 * bug fix: Transforms for TRUNCATE don't die when the result is completely
394 * bug fix: Maybe restore buildability on Alpha.
395 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
397 * bug fix: RANDOM-STATE can be printed readably again.
398 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
399 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
400 types) could result in type mismatches during compilation.
402 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
403 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
404 stack frame thrown from.
405 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
406 compiler optimization qualities inside dynamic extent of its body.
407 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
408 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
410 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
411 constraint propgation, allowing better compilation eg. when used to
412 access structures with WITH-SLOTS. (lp#520366)
413 * optimization: the compiler is now more aware of the type of the underlying
414 storage vector for multidimensional simple arrays resulting in better code
415 for accessing such arrays.
416 * optimization: passing NIL as the environment argument to TYPEP no longer
417 inhibits optimizing it. (lp#309788)
418 * optimization: more efficient register usage when handling single-float
419 arguments on x86-64. (thanks to Lutz Euler)
420 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
421 pre-allocated temporary vectors. (lp#496249)
422 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
423 in :INITIAL-CONTENTS. (lp#523612)
424 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
425 functions. (lp#524707)
426 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
427 WITH-SLOTS usages during compilation.
428 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
429 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
430 all x86oid platforms with :UD2-BREAKPOINTS target feature.
431 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
432 instruction (tested on x86oid linux with ud2-breakpoints).
433 * bug fix: slam.sh now works on win32.
434 * bug fix: better differences of numeric types. (lp#309124)
435 * bug fix: arrays declared intersection and union types can have their
436 upgraded element type derived. (lp#316078)
437 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
438 threads started during profiling. (lp#472499)
439 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
441 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
442 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
443 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
444 values instead of signaling an error. (lp#309093)
445 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
447 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
448 declarations (lp#497321)
449 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
450 and failed to detect circular lists (lp#452008)
451 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
453 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
454 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
455 due to it, so that handlers can run.
456 * bug fix: reparsing undefined types if they have become defined since
458 * bug fix: missing &REST type in a proclamation for a function with both
459 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
460 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
461 expanded calls (lp#542174)
462 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
463 than just at toplevel form.
465 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
466 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
467 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
468 but work on type specifiers.
469 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
470 to name a type specifier.
471 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
472 specifier is valid where "valid" basically means "would be accepted as
473 second argument of TYPEP".
474 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
475 returns the function's declared, or derived FTYPE.
476 * new feature: SB-POSIX now supports accessing the d_ino member of
477 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
478 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
479 provide for seeding a RANDOM-STATE object with user-provided data or
480 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
481 attempt to initialize the returned state from the operating system's
482 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
483 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
484 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
485 * bug fix: Fix grammar and style issues for the docstrings of
486 printer-related variables and functions. (Thanks to mon_key; launchpad
488 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
490 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
491 in a row even though a handler defered the deadline long into the
493 * bug fix: A deadline handler was run without interrupts enabled for a
494 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
495 in infinitely spinning, non-killable threads.
496 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
497 before reaching the erring stack frame.
498 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
499 real power. (launchpad bug lp#525949)
500 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
501 GENCGC platforms. (launchpad bug lp#529014)
502 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
503 (launchpad bug lp#525916)
504 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
505 (Thanks to Robert Goldman)
507 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
508 * optimization: ROUND with a single single-float or double-float argument
509 is properly inlined when possible.
510 * optimization: Slightly better code is generated for integer<->float
511 conversions and for single-float<->double-float conversions on x86-64.
512 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
513 code for 32-bit and 64-bit rotations on x86-64.
514 * bug fix: The install script changes the ownership of directories as well
515 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
516 launchpad bug lp#508485)
517 * bug fix: TRUNCATE with a single single-float or double-float argument is
518 properly inlined when possible. (launchpad bug lp#489388)
519 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
520 no longer causes a compiler error on x86 and ppc.
521 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
522 always relative to *READTABLE* rather than the passed argument.
524 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
525 * minor incompatible change: threading support is now enabled by default
527 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
529 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
530 are now caught and reported just like errors during macroexpansion.
531 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
532 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
533 * enhancement: ASDF systems can now depends on SB-QUEUE.
534 * fixes and improvements related to Unicode and external formats:
535 ** bug fix: error handling and restart usage in the ucs-2 external format
537 ** there is now an implementation of the ucs-4 external format.
538 ** the utf-16 and utf-32 external formats are supported.
539 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
540 in the environment. setenv() and unsetenv() are also provided. (reported by
541 Fare Rideau; launchpad bug lp#460455)
542 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
543 loading. This ensures sensible errors for .FASL files from other
544 implementations on case-insensitive filesystems. (reported by Willem
545 Broekema; launchpad bug lp#489417)
546 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
547 Willem Broekema; launchpad bug lp#489698).
548 * bug fix: some minor code rearrangements to reenable warning-free building
549 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
550 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
552 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
555 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
556 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
557 * improvement: support O_LARGEFILE access to files larger than 2GB on
558 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
559 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
560 definitions for methods specializing on the passed class itself.
561 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
562 definitions for methods specializing on the passed class itself, or on
564 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
565 about itself during the build (e.g. for M-? in Slime), if this flag is
566 enabled in customize-target-features.lisp. This will increase the core
567 size by about 5-6mb, though, so it's mostly interesting to SBCL
569 * new feature: various GENCGC tuning parameters have been experimentally
570 documented and exported from SB-EXT. See documentation for details.
571 * fixes and improvements related to Unicode and external formats:
572 ** the Unicode character database has been upgraded to the
573 Unicode 5.2 standard, giving names and properties to a number of new
574 characters, and providing a few extra characters with case
576 ** improvement: restarts for providing replacement input/output on coding
577 errors for fd-stream external formats.
578 ** improvement: where :<encoding> is a keyword corresponding to an
579 external format the system supports, it is now possible to specify
580 (:<encoding> :replacement <character>) as an external format which will
581 automatically substitute <character> on encoding or decoding errors for
582 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
584 ** improvement: the file streams underlying the standard streams (such as
585 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
586 which uses the replacement mechanism to handle encoding errors,
587 preventing various infinite error chains and unrecoverable I/O
589 ** minor incompatible change: the utf-8 external format now correctly
590 refuses to encode Lisp characters in the surrogate range (char-codes
591 between #xd800 and #xdfff).
592 ** fix a typo preventing conversion of strings into octet vectors
593 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
595 ** fix a bug in the octet multibyte handling of decoding errors and the
596 USE-VALUE restart. (launchpad bug lp#314939)
597 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
598 restart on fd-stream decoding errors.
599 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
600 error is near the end of file.
601 ** fix a double-error case in unibyte octet conversions, when the first
602 use of USE-VALUE is ignored.
603 ** fix bugs in handling of undefined code points in unibyte encodings.
604 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
605 streams after an UNREAD-CHAR.
606 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
607 object is allocated in a boxed region of dynamic space.
608 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
609 fork with multiple Lisp threads running is made, instead of going
610 ahead with unpredictable consequences. (reported by Leslie Polzer)
611 * bug fix: uses of slot accessors on specialized method parameters within
612 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
613 error while finalizing the class. This fix may cause classes with slot
614 accessors to be finalized later than previously. (reported by Lars Rune
615 Nøstdal; launchpad bug lp#473699)
616 * bug fix: restore buildability on the MIPS platform. (regression from
617 1.0.30.38, reported by Samium Gromoff)
618 * bug fix: inspecting closures is less likely to fail with a type error.
619 * bug fix: no timer starvation when setting the system clock back.
620 (launchpad bug lp#460283)
621 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
622 standard pprint dispatch table as specified by CLHS.
623 * bug fix: give CLISP a hint about a type declaration to enable it to build
624 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
626 * bug fix: correctly dump literal objects in defaulting forms of arglists.
627 (reported by Attila Lendvai; launchpad bug lp#310132)
628 * bug fix: distinguish in type specifiers between arrays that might be
629 complex and arrays that are definitely complex. (launchpad bug lp#309129)
630 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
631 type. (reported by Levente Mészáros; launchpad bug lp#485972)
632 * bug fix: setting the value of a symbol-macro within a method in the
633 presence of type declarations works properly again. (reported by Iban
634 Hatchondo; launchpad bug lp#485019)
636 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
637 * optimization: faster FIND and POSITION on strings of unknown element type
638 in high SPEED policies. (thanks to Karol Swietlicki)
639 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
641 * improvement: better error signalling for bogus parameter specializer names
642 in DEFMETHOD forms (reported by Pluijzer)
643 * bug fix: DELETE-FILE once again works on logical pathnames (regression
645 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
647 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
648 removes previous default initargs (reported by Lars Rune Nøstdal and
650 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
651 lambda-lists. (reported by Peter Seibel)
652 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
653 correctly when starting from an executable core without saved runtime
654 options (reported by Faré Rideau, thanks to Zach Beane)
655 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
656 an optimization note instead. (reported by Martin Cracauer)
657 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
658 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
659 new process group if it doesn't need to share stdin with the sbcl
660 process. (thanks to Leslie Polzer)
661 * bug fix: SATISFIES could be misoptimized to refer to a local function.
662 (reported by Stanislaw Halik)
664 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
665 * improvement: stack allocation is should now be possible in all nested
666 inlining cases: failure to stack allocate when equivalent code is manually
667 open coded is now considered a bug.
668 * improvements related to Unicode:
669 ** the Unicode character database has been upgraded to the
670 Unicode 5.1 standard, giving names and properties to a number of new
671 characters, and providing a few extra characters with case
673 ** the system now recognizes and produces names for Unicode Hangul
675 ** the EBCDIC-US external-format is now supported for octet operations
676 (as well as for stream operations).
677 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
678 be used to output toplevel compile-time effects into a separate .CFASL
680 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
681 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
683 * optimization: TRUNCATE on known single- and double-floats is upto 25%
685 * optimization: division of floating point numbers by constants uses
686 multiplication by reciprocal when an exact reciprocal exists.
687 * optimization: multiplication of single- and double-floats floats by
688 constant two has been optimized.
689 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
690 sufficient type information is available. (thanks to Leslie Polzer)
691 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
692 known structure objects are as efficient as defstruct generated accessors.
693 * optimization: unused vector creation can now be optimized away.
694 * improvement: ASDF systems can now depends on SB-INTROSPECT.
695 * improvement: a STYLE-WARNING is signalled when a generic function
696 clobbers an earlier FTYPE proclamation.
697 * improvement: the compiler is able to track the effective type of
698 generic function across method addition and removal even in the
699 absence of an explicit DEFGENERIC.
700 * improvement: DESCRIBE now reports on symbols naming undefined
701 but assumed or declared function as well.
702 * improvement: recompilation of systems using SB-GROVEL now works
703 (thanks to Leslie Polzer)
704 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
705 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
707 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
708 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
709 well as user defined declaration names.
710 ** VARIABLE-INFORMATION is now aware of alien variables.
711 * improvement: improved address space layout on OpenBSD (thanks to Josh
713 * improvement: pretty-printing of various Lisp forms has been improved
714 (thanks to Tobias Rittweiler)
715 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
716 unused were deleted in safe code. (reported by John Fremlin)
717 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
719 * bug fix: some out-of-line array predicates were missing (reported by
721 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
723 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
724 (thanks to Larry D'Anna)
725 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
726 as well. (reported by Josh Elsasser)
727 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
728 leading to possible attempts to delete the same file twice. See docstring
729 on DELETE-FILE for details. (reported by John Fremlin)
730 * bug fix: DELETE-FILE once again deletes the file named by the pathname
731 designator argument, rather than its truename. (reported by Luis
733 * bug fix: the low-level debugger had 32-bit assumptions and was missing
734 information about some array types. (thanks to Luis Oliveira)
735 * bug fix: moderately complex combinations of inline expansions could
736 be miscompiled if the result was declared to be dynamic extent.
737 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
738 form (+ <variable> <integer>) were miscompiled under certain
740 * bug fix: in some cases no compiler note about failure to stack allocate
741 was emitted, even if the objects were in fact heap allocated.
742 * bug fix: minor violation of "otherwise inaccessible" rule for stack
743 allocation could cause objects users might reasonably expect to
744 be heap allocated to be stack allocated.
745 * bug fix: DESCRIBE signalled an error for generic functions under
746 certain circumstances. (thanks to Leslie Polzer)
747 * bug fix: Fixed spelling of an error message.
749 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
750 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
751 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
752 of SB-THREAD:THREAD-ERROR-THREAD.
753 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
754 * new feature: docstrings for local and anonymous functions are no longer
755 discarded. (thanks to Leslie Polzer)
756 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
757 values in other threads.
758 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
759 about object allocation.
760 * optimization: division of a real float by a complex float is implemented
761 with a specialised code sequence.
762 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
763 keywords is an order of magnitude faster.
764 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
765 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
766 methods, and similarly for non-standard metaclass classes as long as there
767 are no methods additional on MAKE-INSTANCE.
768 * optimization: more efficient type-checks for FIXNUMs when the value
769 is known to be a signed word on x86 and x86-64.
770 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
771 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
773 * optimization: compiler is smarter about delegating argument type checks to
775 * optimization: several character functions are now compiled somewhat more
776 efficiently. (reported by Lynn Quam)
777 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
778 * improvement: less unsafe constant folding in floating point arithmetic,
779 especially for mixed complex/real -float operations.
780 * optimization: constant double and single floats are stored in native
781 unboxed format on x86[-64].
782 * optimization: smarter code for arithmetic operations with constant floats,
783 complex floats, or integers on x86[-64].
784 * optimization: smarter code for conjugate/multiplication of float complexes
785 and abs/negate of floats on x86-64.
786 * optimization: more efficient complex float and real float operations on
788 * improvement: complex float division is slightly more stable.
789 * improvement: DESCRIBE output has been reworked to be easier to read and
790 contains more pertinent information.
791 * improvement: failure to provide requested stack allocation compiler notes
792 provided in all cases (requested stack allocation not happening without a
793 note being issued is now considered a bug.)
794 * bug fix: SB-POSIX exports the documented types and functions
795 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
796 types. (reported by "abhi")
797 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
798 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
799 (thanks to Paul Khuong)
800 * bug fix: looping around HANDLER-CASE could silently consume stack space
801 on each iteration. (reported by "foobar")
802 * bug fix: better error signalling when calls to functions seeking elements
803 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
804 (reported by Tobias Rittweiler)
805 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
806 directory components now works as it used to. (various prolems reported by
807 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
808 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
809 (reported by Elliot Slaughter, thanks to Stas Boukarev)
810 * bug fix: bogus undefined variable warnings from fopcompiled references to
811 global variables. (thanks to Lars Rune Nøstdal)
812 * bug fix: foreign function names should now appear in backtraces on
813 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
814 * bug fix: SETF compiler macro documentation strings are not discarded
816 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
817 (thanks to Alex Plotnick)
818 * bug fix: SLEEP accepts large integer arguments, truncating them to
819 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
820 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
821 * bug fix: compiler notes for expensive slot type checks could be emitted
822 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
824 changes in sbcl-1.0.29 relative to 1.0.28:
825 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
826 https://bugs.launchpad.net/sbcl
827 Bugs can be reported directly there, or by sending email to
828 sbcl-bugs@lists.sourceforge.net
829 (no subscription required.)
830 * minor incompatible change: under weak type checking policy integer
831 types are weakened less aggressively.
832 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
833 allowed to return, which causes SBCL to quit with exit status 0. Previously
834 if the function returned with a small integer return value, that value
835 was accidentally reused as the exit status.
836 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
837 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
838 :HASH-FUNCTION argument. Refer to user manual for details.
839 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
841 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
842 microseconds since the Unix epoch on all platforms.
843 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
844 allows the compiler to safely elide boundedness checks for special
846 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
847 the symbol, prohibits both lexical and dynamic binding. This is mainly an
848 efficiency measure for threaded platforms, but also valueable in
850 * new feature: UNC pathnames are now understood by the system on Windows.
851 * optimization: the compiler uses a specialized version of FILL when the
852 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
854 * optimization: accesses to potentially non-simple arrays where element type
855 is known are 50% faster.
856 * optimization: compiler now generates faster array typechecking code.
857 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
859 * optimization: multidimensional array accesses in the absence of type
860 information regarding array rank are approximately 10% faster due to
861 open coding of ARRAY-RANK.
862 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
863 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
865 * optimization: result of call to VECTOR can now be stack allocated.
866 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
867 as long as the resulting array is one-dimensional and has a known
868 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
869 length of the list matches the known length of the vector does not
870 allocate the list as an intermediate step. Ditto for VECTOR and simple
872 * optimization: MAKE-ARRAY can now stack allocate in the presence of
873 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
874 known element type, and is known to be simple and one dimensional.
875 * improvement: SBCL now emits a compiler note where stack allocation was
876 requested but could not be provided (not in all cases, unfortunately)
877 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
878 * improvement: pretty-printing loop has been implemented properly. (thanks
879 to Tobias Rittweiler)
880 * documentation: CLOS slot typechecing policy has been documented.
881 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
882 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
883 pointer, leading to memory faults. (thanks to Bart Botta)
884 * bug fix: better floating point exception handling on x86/OpenBSD.
885 (thanks to Josh Elsasser)
886 * bug fix: exit status from QUIT when called under --script was lost
887 (reported by Hubert Kauker)
888 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
889 same implementation of FILL to initialize the array, even if a more
890 efficient one was available (reported by Stas Boukarev, thanks to
892 * bug fix: potential miscompilation of array stack allocation on x86 and
893 x86-64. (reported by Time Tossavainen)
894 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
895 result in their subforms being treated as top level forms. (reported by
897 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
898 than a machine register could leave garbage in the high bits of the
899 result register (bug 316325).
900 * bug fix: disable address space randomization Linux/x86-64 as well,
901 not just x86-64. (reported by Ken Olum)
902 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
903 generate incorrect code.
904 * bug fix: #201; type inference for CONS and ARRAY types could derive
905 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
906 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
907 could not be assigned to or bound with PROGV. (reported by Lorenz
909 * bug fix: the value of CL:- in the inspector was the previous expression
910 evaluated rather than the expression being evaluated.
911 * bug fix: constants can no longer be locally declared special.
912 * bug fix: signals delivered to threads started from foreign land (read:
913 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
914 thread by blocking all signals and resignalling.
915 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
916 from :INITFORM, if any.
918 changes in sbcl-1.0.28 relative to 1.0.27:
919 * a number of bugs in cross-compilation have been fixed, with the ultimate
920 result that building under (at least) clisp should be much more reliable.
921 * minor incompatible changes: echo-streams now propagate unread-char to the
922 underlying input stream, and no longer permit unreading more than one
924 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
925 frames, allowing for instance more reliable backtraces.
926 * improvement: the debugger REPL can now reference lexical variables
927 by name directly for code compiled with (DEBUG 3).
928 * improvement: errors from malformed declarations now have better source
929 paths associated with them. (thanks to Tobias Rittweiler)
930 * optimization: faster local calls on x86/x86-64
931 * bug fix: some error messages for out-of-bound array indexes confused the
932 index and the bound. (thanks to Stas Boukarev)
933 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
935 * bug fix: running regressions tests in shells without OSTYPE set now works.
936 (reported by Harald Hanche-Olsen)
937 * bug fix: more robust static space exhaustion signalling from
938 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
939 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
940 docstring away instead of storing it under names such as (LAMBDA (X)).
941 (reported by Leslie Polzer)
942 * bug fix: timers could go off in the wrong order, be delayed indefinitely
943 (thanks to Ole Arndt for the patch)
944 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
945 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
946 potentially-invalid effective methods in its cache.
947 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
948 instances as well (thanks to Paul Khuong)
949 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
950 SB-POSIX:WAITPID and their C equivalents.
951 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
953 changes in sbcl-1.0.27 relative to 1.0.26:
954 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
955 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
956 * improvement: the system either recovers from stack exhaustion or dies
957 properly as opposed to leaving the user uncertain of whether the handler
958 trampled on some random memory next to the stack or having to rely on
959 --lose-on-corruption (which is still a good idea to use in production
960 because stack exhaustion can happen in signal handlers which will likely
962 * bug fix: fix gc related interrupt handling bug on ppc (regression from
963 1.0.25.37, reported by Harald Hanche-Olsen)
964 * bug fix: work around signal delivery bug in darwin (regression from
965 1.0.25.44, reported by Sidney Markowitz)
966 * bug fix: fix ERROR leaking memory (reported by David Thompson)
968 changes in sbcl-1.0.26 relative to 1.0.25:
969 * incompatible change: an interruption (be it a function passed to
970 INTERRUPT-THREAD or a timer function) runs in an environment where
971 interrupts can be enabled. The interruption can use
972 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
973 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
974 potentially running out of stack. Keep in mind that in the absence
975 of WITHOUT-INTERRUPTS some potentially blocking operation such as
976 acquiring a lock can enable interrupts.
977 * incompatible change: GC-OFF and GC-ON are removed, as they were
978 always unsafe. Use WITHOUT-GCING instead.
979 * new feature: runtime option --disable-ldb
980 * new feature: runtime option --lose-on-corruption to die at the
981 slightest hint of possibly non-recoverable errors: running out of
982 memory, stack, alien stack, binding stack, encountering a memory
983 fault, etc. In the absence of --lose-on-corruption a warning is
985 * enhancement: detect binding stack exhaustion
986 * enhancement: detect alien stack exhaustion on x86/x86-64
987 * improvement: generally more stable and reliable interrupt handling
988 * improvement: there is a per thread interruption queue,
989 interruptions are executed in order of arrival
990 * improvement: a repeating timer reschedules itself when the it has
991 finished, but expiration times are spaced equally. If an
992 expiration time is in the past it will trigger after a short grace
993 period that may give a chance to other things to run.
994 * optimization: slightly faster gc on multithreaded builds
995 * optimization: faster WITHOUT-GCING
996 * bug fix: when JOIN-THREAD signals an error, do it when not holding
997 important locks so that the debugger/handler doesn't produce
998 recursive errors or deadlock.
999 * bug fix: real-time signals are not used anymore, so no more
1000 hanging when the system wide real-time signal queue gets full.
1001 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1003 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1004 * bug fix: fix random memory faults related to interrupts on alpha
1005 * bug fix: fix random memory faults related to interrupts on sparc
1006 * bug fix: fix deadlocks related to starting threads
1007 * bug fix: fix deadlines on locks on futex platforms
1008 * bug fix: restore errno in signal handlers
1009 * bug fix: fix deadlocks related to hash tables
1010 * bug fix: fix deadlocks in pcl
1012 changes in sbcl-1.0.25 relative to 1.0.24:
1013 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1014 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1015 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1016 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1017 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1018 better name and does not return values so stale on multiprocessor systems.
1019 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1021 * improvement: unithread builds keep track of MUTEX-VALUE.
1022 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1023 stream anymore making it thread safe to have a concurrent reader and
1024 a writer, for instance, in a pipe.
1025 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1026 arguments, making compiler-macros for SETF-functions able to inspect
1027 their constant arguments.
1028 * improvement: COMPILE-FILE reports times with millisecond accuracy
1029 (thanks to Luis Oliveira)
1030 * optimization: CHAR-CODE type derivation has been improved, making
1031 TYPEP elimination on subtypes of CHARACTER work better. (reported
1032 by Tobias Rittweiler, patch by Paul Khuong)
1033 * bug fix: setting alien structure fields of type struct by value now
1034 computes the right offset for the memory copy.
1035 * bug fix: compilation problem involving inlined calls to aliens with
1036 result type VOID. (reported by Ken Olum)
1037 * bug fix: #235a; sequential inline expasion in different policies no
1038 longer reuses the functional from the previous expansion site.
1039 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1040 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1041 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1042 cause an implied type redefinition. Regression from 1.0.21.29.
1043 * bug fix: sign-extension of small signed return values now works with C
1044 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1045 * improvements to the Windows port:
1046 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1047 Westfold, thanks to Rudi Schlatte)
1049 changes in sbcl-1.0.24 relative to 1.0.23:
1050 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1051 vector of a multidimensional SIMPLE-ARRAY.
1052 * new feature: the system now signals a continuable error if standard
1053 readtable modification is attempted. (thanks to Tobias Rittweiler)
1054 * new feature: DIRECTORY has been extended with a non-standard keyword
1055 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1056 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1057 has been robustified and documented better. (thanks to Robert Goldman)
1058 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1059 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1060 * tradeoff: constant FORMAT control strings are now compiled unless
1061 SPACE > SPEED (previously only when SPEED > SPACE.)
1062 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1064 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1066 * bug fix: lexical type declarations are now correctly reported by
1067 SB-CLTL2. (reported by Larry D'Anna)
1068 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1069 using UTF-8 as external format. (thanks to Luis Oliveira)
1070 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1071 are signalled correctly. (thanks to Stas Boukarev)
1072 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1073 designator. (thanks to Tobias Rittweiler)
1074 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1075 designator, and returns T instead of the function. (thanks to
1077 * bug fix: direct superclasses of STANDARD-CLASS and
1078 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1079 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1080 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1081 when no class with the named slot yet exists no longer causes a
1082 compile-time style-warning.
1083 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1084 in safe code. (reported by Didier Verna)
1085 * bug fix: #430; nested structure constructors can stack allocate.
1086 * bug fix: on some 64-bit platforms dynamic space size was truncated
1087 to #xffff0000 bytes. (reported by Benjamin Lambert)
1088 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1089 REPL unusable. (reported by Daniel Herring)
1090 * bug fix: return values of READ-SEQUENCE did not take :START into
1091 account on file streams, regressions since 1.0.12.22. (reported by
1092 Thomas Russ, patch by Paul Khuong)
1093 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1094 method specializer used to confuse permuation vector optimization.
1095 * bug fix: system inserted bogus implicit type declarations for local
1096 special variables in DEFMETHOD bodies.
1097 * bug fix: #354; duplicated frames in backtraces due to
1098 non-tail-call-optimized XEPs to functions with return type NIL
1100 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1101 initializes structure object slots according to DEFSTRUCT initforms,
1102 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1103 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1104 (reported by Bruno Haible and Stephen Wilson)
1105 * bug fix: #395; fill-pointer output streams used now support
1106 element-type BASE-CHAR as well.
1107 * bug fix: compiler error when attempting to derive return value of
1108 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1110 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1112 * bug fix: Mac OS X binaries should now be portable between Leopard
1115 changes in sbcl-1.0.23 relative to 1.0.22:
1116 * enhancement: when disassembling method functions, disassembly
1117 for the associated fast function is also produced.
1118 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1120 * optimization: printing with *PRINT-PRETTY* true is now more
1121 efficient as long as the object being printed doesn't require
1122 special handling by the pretty printer.
1123 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1124 now interact correctly with type declarations.
1125 * partial bug fix: PCL detects infinite recursion during wrapper
1126 validation. (thanks to Attila Lendvai)
1127 * bug fix: #426; nested function calls are inlined properly.
1128 Previously if FOO was an inline function, in calls of the form
1129 (FOO (FOO ...)) the outer call was not inlined.
1130 * bug fix: long long arguments passed in registers to alien
1131 functions on PowerPC Linux and NetBSD are now handled correctly
1132 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1134 changes in sbcl-1.0.22 relative to 1.0.21:
1135 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1136 for the shared object in the current directory, but passes the native
1137 namestring of the designated pathname to the operation system's shared
1138 object loading function as-it.
1139 * minor incompatible change: --disable-debugger toplevel option now takes
1140 effect before processing of initialization files and --eval or --load
1142 * new feature: new commandline argument: --script, which supports
1143 shebang lines. See documentation for details. (based on work by
1145 * new feature: SAVE-LISP-AND-DIE can save current values of
1146 --dynamic-space-size and --control-stack-size in the executable core,
1147 causing it to skip normal runtime option processing. See documentation
1148 for details. (thanks to Zach Beane)
1149 * enhancement: inoccous calls to EVAL or generic functions dispatching
1150 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1151 * enhancement: the system no longer resignals errors from --load and
1152 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1153 associated with the original error to be lost. (thanks to Ariel
1155 * enhancement: :DONT-SAVE keyword argument has been added to
1156 LOAD-SHARED-OBJECT for controlling interaction with
1157 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1158 the effects of an earlier LOAD-SHARED-OBJECT call.
1159 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1160 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1161 provided. (reported by Cedric St-Jean)
1162 * bug fix: circularity handling in the reader did not treat raw
1163 structure slots correctly. (reported by Cedric St-Jean)
1164 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1165 file descriptors when there were none.
1166 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1167 was broken. (reporteed by Willem Broekema)
1168 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1169 pathnames without a directory.
1170 * bug fix: COMPILE-FILE did not warn about undefined variable
1171 references at toplevel, and LOAD of the resulting fasl did
1172 not signal an error.
1173 * bug fix: functions with non-required arguments used to end up with
1174 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1175 * bug fix: redefining a function with non-required arguments didn't
1176 update the system's knowledge about its call signature properly.
1177 * bug fix: fixed #431; incompatible alien record type redefinitions
1178 are detected and handled. (reported by Neil Haven)
1179 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1180 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1182 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1183 after alien stack frames.
1184 * bug fix: strings passed to mk{s,d}temp lacked null termination
1186 changes in sbcl-1.0.21 relative to 1.0.20:
1187 * new feature: the compiler is able to track the effective type of a
1188 generic function across method addition and removal.
1189 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1190 appropriately typed structure slots without locking.
1191 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1192 information like those gathered by TIME using a programming-friendly
1194 * new feature: TIME reports time taken even if the form performs a
1195 non-local transfer of control.
1196 * enhancement: reduced conservativism on GENCGC platforms: on
1197 average 45% less pages pinned (measured from SBCL self build).
1198 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1199 mutate constant symbols or violate declaimed type of the symbol.
1200 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1201 sleeping on the semaphore in heavily contested semaphores.
1202 * bug fix: semaphores and condition variables were not interrupt
1204 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1205 owned by other threads anymore.
1206 * bug fix: FIND on lists called KEY outside the specified
1207 subsequence. (reported by budden)
1208 * bug fix: LOG doesn't use single-float intermediate results when
1209 given mixed integer and double-float arguments, leading to better
1210 precision. (reported by Bob Felts)
1211 * bug fix: LOG with base zero returned values of inconsistent type.
1213 changes in sbcl-1.0.20 relative to 1.0.19:
1214 * minor incompatible change: OPTIMIZE qualities
1215 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1216 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1217 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1218 * documentation: some slot access efficiency guidelines have been
1219 added to the user manual.
1220 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1221 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1222 as ASSOC and MEMEBER.
1223 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1224 to more efficient EQ-comparison versions more often.
1225 * optimization: enhanced derivation of DOLIST iteration variable type
1227 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1229 * optimization: runtime lookup of function definitions can be
1230 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1231 * optimization: compiler is able to derive the return type of
1232 (AREF (THE STRING X) Y) as being CHARACTER.
1233 * optimization: CLRHASH on empty hash-tables no longer does pointless
1234 work. (thanks to Alec Berryman)
1235 * optimization: REPLACE deftransforms don't punt when :START1 or
1237 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1238 no longer emits a code deletion note. (reported by Andrew
1240 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1241 functions with an odd number of &OPTIONAL arguments, a &REST
1242 argument, and one or more &KEY arguments at the call site.
1243 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1244 arguments appeared at call sites as well.
1245 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1246 READ-LINE &co can no longer read from them afterwards. (reported
1248 * bug fix: fixed #427: unused local aliens no longer cause compiler
1249 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1251 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1252 alien-stack leakage. (reported by Andy Hefner)
1253 * bug fix: PROGV signals an error when an attempt to violate declared
1254 type of a variable or bind a constant is made.
1255 * bug fix: SET signals an error when an attempt to violate declared
1256 type of a variable is made.
1257 * bug fix: restart computation during the execution of a restart
1258 test function no longer causes infinite recursion. (reported by
1260 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1261 signals an error. (thanks to Pierre Mai)
1262 * bug fix: EXPORT left symbol unexported in conflict situations.
1263 (thanks to Michael Weber)
1264 * bug fix: correctly handle name conflicts involving CL:NIL.
1265 (thanks to Michael Weber)
1266 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1267 conflicts arising from USEing package with conflicting symbols
1268 correctly. (thanks to Michael Weber)
1270 changes in sbcl-1.0.19 relative to 1.0.18:
1271 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1272 warnings that go otherwise unhandled will be muffled if they are
1273 of the type that's the value of this variable.
1274 * optimization: stack allocation is slightly more efficient on x86
1276 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1277 where a raw slot always is initialized using the initform whose
1278 type is not know sufficiently well a compile-time are now compiled
1279 correctly. (reported by John Morrison)
1280 * bug fix: compiler no longer makes erronous assumptions in the
1281 presence of non-foldable SATISFIES types.
1282 * bug fix: stack analysis missed cleanups of dynamic-extent
1283 arguments in non-let-converted calls to local functions.
1284 * improvements to the Windows port:
1285 ** adjusted address spaces for building on both Win32 and
1286 Win64. (thanks for John Connors)
1287 * fixed some bugs revealed by Paul Dietz' test suite:
1288 ** interval arithmetic during type derivation used inexact integer
1289 to single-float coercions.
1290 ** arithmetic operations involving large integers and single
1291 floats give the same results in compiled and interpreted code.
1292 ** deriving the result type of COERCE no longer signals an error
1293 if the derived type of the second argument is a MEMBER type
1294 containing invalid type specifiers.
1295 ** ADJOIN with constant NIL as second argument works correctly.
1296 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1298 changes in sbcl-1.0.18 relative to 1.0.17:
1299 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1300 profiles only the current thread.
1301 * minor incompatible change: changes to SYMBOL-VALUE of constants
1302 defined with DEFCONSTANT now signal an error.
1303 * enhancement: SB-SPROF now has support for wallclock profiling,
1304 and is also able to profile specific threads. REPORT output
1305 has also additional sorting options.
1306 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1308 * optimization: structure allocation has been improved
1309 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1310 ** out of line constructors are ~10% faster.
1311 ** inline constructors are ~15% faster.
1312 ** inline constructors are capable of dynamic extent allocation
1313 (generally on x86 and x86-64, in some cases on other platforms
1315 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1317 * optimization: file compiler is now able to coalesce non-circular
1318 lists, non-base strings, and bit-vectors. Additionally, constants
1319 are never referenced through SYMBOL-VALUE at runtime.
1320 * optimization: code defining methods on PRINT-OBJECT (and other
1321 generic functions in the COMMON-LISP package) now loads faster.
1322 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1324 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1325 fasl is now deleted. (reported by Attila Lendvai)
1326 * bug fix: READ-LINE always returned NIL for the last line in files.
1327 (reported by Yoshinori Tahara)
1328 * bug fix: more accurate disassembly annotations of foreign function
1329 calls. (thanks to Andy Hefner)
1330 * bug fix: trimming non-simple strings and non-string string
1331 designators when the there is nothing to trim works properly.
1332 (thanks to James Knight)
1333 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1334 (thanks to Travis Cross)
1335 * fixed some bugs revealed by Paul Dietz' test suite:
1336 ** NIL is a valid function name (regression at 1.0.13.38)
1337 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1338 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1339 fill pointers properly (regression at 1.0.12.23)
1340 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1341 displacement indices properly (regression at 1.0.12.23)
1343 changes in sbcl-1.0.17 relative to 1.0.16:
1344 * temporary regression: user code can no longer allocate closure
1345 variable storage on stack, due to bug 419 without explicitly
1346 requesting it. Please consult sbcl-devel for advice if you need to
1347 use this feature in the meanwhile.
1348 * new feature: runtime argument --control-stack-size can be used to
1349 adjust thread default control stack size.
1350 * enhancement: improved TIME output
1351 ** all times are reported using the measured accuracy (milliseconds
1352 for real and GC times, microseconds for everything else.)
1353 ** processor cycle counts on x86 and x86-64.
1354 ** interpreted forms are counted for both evaluator modes.
1355 ** number of lambdas converted by the compiler is reported.
1356 ** CPU percentage report (computed from real and total run time.)
1357 ** more comprehensive run time reporting, using a condenced format
1358 ** interperted form, lambda, and page fault counts are omitted
1360 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1362 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1363 * optimization: two argument forms of LAST are upto ~10% faster
1364 in normal SPEED policies.
1365 * optimization: NCONC no longer needs to heap cons its &REST list
1366 in normal SPEED policies.
1367 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1368 to Sidney Markowitz)
1369 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1370 regression since 1.0.9.1. (thanks to Eric Marsden)
1371 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1372 since 1.0.15.36. (thanks to Paul Khuong)
1373 * bug fix: LAST when always returned the whole list when given a bignum
1374 as the second argument.
1375 * bug fix: dynamic extent allocation of nested lists and vectors
1376 could leak to otherwise accessible parts.
1377 * bug fix: invalid optimization of heap-allocated alien variable
1379 * bug fix: fasl header checking is less vulnerable to different
1380 platform word lengths.
1381 * bug fix: more correct assembler syntax for GNU binutils
1382 2.18.50.0.4 support. (thanks to Marijn Schouten)
1383 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1385 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1386 declarations) successfully. (reported by Attila Lendvai)
1388 changes in sbcl-1.0.16 relative to 1.0.15:
1389 * minor incompatible change: revert the changes to sb-posix's error
1390 signaling added in 1.0.14.
1391 * minor incompatible change: change PROBE-FILE back to returning
1392 NIL whenever we can't get a truename, as was the case before 1.0.14.
1393 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1394 inherits from ERROR instead of just CONDITION.
1395 * new feature: SB-INTROSPECT can provide source locations for instances
1396 as well. (thanks to Tobias Rittweiler)
1397 * optimization: binding special variables now generates smaller code
1398 on threaded platforms.
1399 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1400 and cases where no :TEST is given but the compiler can infer that
1401 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1402 * optimization: better LOGNOT on fixnums.
1403 * optimization: modular arithmetic for a particular requested width
1404 is implemented using a tagged representation unless a better
1405 representation is available.
1406 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1407 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1408 for wellformedness and returns a specialized vector. (reported by
1409 Francois-Rene Rideau)
1410 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1411 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1412 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1413 unscheduling timer at the same time as another timer fires.
1414 * bug fix: don't reschedule timers for dead threads.
1415 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1416 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1417 bogus errors if select() was interrupted.
1418 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1420 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1421 * enhancement: cleaner backtraces for interactive interrupts, as
1422 well as other cases where the interesting frames used to be
1423 obscured by interrupt handling frames.
1424 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1425 now supported, and tracing a whole package using (TRACE "FOO") now
1426 traces SETF-functions as well.
1427 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1428 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1429 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1430 * unreadably printed representation of hash-tables now includes
1432 * bug fix: partially fixed #188: type propagation from assignments
1433 is now more efficient.
1434 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1435 'DOUBLE-FLOAT) are not flushable.
1436 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1437 full address of the object, and none of the tag bits.
1438 * bug fix: readably printing hash-tables now respects other printer
1439 control variables. (reported by Cedric St-Jean)
1440 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1441 keyword with MAKE-HASH-TABLE.
1442 * bug fix: export SB-POSIX:MKSTEMP.
1443 * bug fix: SORT was not interrupt safe.
1444 * bug fix: XREF accounts for the last node of each basic-block as
1446 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1447 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1448 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1449 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1450 create obsolete instances in the case of redefinition or
1451 obsoletion of a superclass. (thanks to Andy Hefner)
1452 * bug fix: Support for the Alpha architecture has been revived; it had
1453 suffered somewhat from lack of maintenance since sbcl-1.0.
1454 * improvements to the Windows port:
1455 ** The system detects the codepage to use at startup, instead of
1456 using the value from the saved core. (thanks to Kei Suzuki)
1458 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1459 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1460 (see documentation for details.)
1461 * revived support for OpenBSD (contributed by Josh Elsasser)
1462 * partially fixed bug #108: ROOM no longer suffers from occasional
1463 (AVER (SAP= CURRENT END)) failures.
1464 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1465 bodies no longer cause a WARNING to be signalled. (reported by
1467 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1468 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1469 the bug in TRUNCATE.) (reported by Michael Weber)
1470 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1471 no samples. (reported by Andy Hefner)
1472 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1473 no longer appear as (NIL ...) frames in backtraces.
1474 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1475 is now actually exported from SB-EXT as documented. (reported by
1477 * bug fix: sb-aclrepl now correctly understands how to inspect
1478 single-floats on 64-bit platforms where single-floats are not boxed.
1479 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1480 yet been finalized. (reported by Levente Meszaros)
1481 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1482 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1483 SBCL-specific optimize qualities.
1485 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1486 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1487 an executable in the search path, and does so in the child
1488 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1489 been removed; it can be found in the CVS history, for somebody who
1490 needs that search behavior (see the manual).
1491 * minor incompatible change: compiler policy re. weakening type
1492 checks has changed: now type checks are weakened only if SAFETY < 2
1494 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1495 unparsing of directory pathnames as files. Analogously,
1496 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1497 filename to parse into a directory pathname.
1498 * enhancement: implicit generic function creation now signals a
1499 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1500 users can bind handlers for and muffle around calls to LOAD.
1501 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1502 to be used (using the default stream external format), and allows
1503 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1504 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1505 strings and vectors whose element-type or simplicity is not fully
1506 known at compile-time.
1507 * optimization: STRING-TRIM and related functions no longer allocate
1508 a new string when no trimming needs to be performed. These functions
1509 are also faster than before when the input string has been declared
1511 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1512 * optimization: READ-LINE is significantly faster for files containing
1514 * optimization: non-open coded uses of character comparison operators
1515 (e.g. char=) no longer cons when called with more than one parameter
1516 on platforms supporting dynamic-extent allocation.
1517 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1518 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1519 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1521 * bug fix: some sequence functions elided bounds checking when
1523 * bug fix: too liberal weakening of union-type checks when SPEED >
1525 * bug fix: more bogus fixnum declarations in ROOM implementation
1528 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1529 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1530 :SYNCHRONIZED argument, which makes the hash-table safe for
1531 concurrent accesses (but not iteration.) See also:
1532 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1533 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1534 * optimization: CONCATENATE on strings is an order of magnitude faster
1535 in code compiled with (> SPEED SPACE).
1536 * optimization: SUBSEQ is ~50% faster on lists.
1537 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1538 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1539 END is smaller then START.
1540 * bug fix: SB-PROFILE will no longer report extra consing for nested
1541 calls to profiled functions.
1542 * bug fix: ROOM implementation had bogus fixnum declarations which
1543 could cause type-errors when calling ROOM on large images.
1544 * bug fix: if file compilation is aborted, the partial fasl is now
1545 deleted, and COMPILE-FILE returns NIL as the primary value.
1546 * bug fix: number of thread safety issues relating to SBCL's internal
1547 hash-table usage have been fixed.
1548 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1549 be returned from its body when the values were being returned
1550 using unknown-values return convection and the W-P-O was wrapped
1551 inside an UNWIND-PROTECT.
1552 * bug fix: sb-posix should now compile again under Windows, enabling
1553 slime to work again.
1555 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1556 * incompatible change: hash-table accessor functions are no longer
1557 automatically protected by locks. Concurrent accesses on the same hash-table
1558 from multiple threads can give inconsistent results or even corrupt the
1559 hash-table completely. Multi-threaded applications should do their own
1560 locking at the correct granularity. In the current implementation it is
1561 still safe to have multiple readers access the same table, but it's not
1562 guaranteed that this property will be maintained in future releases.
1563 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1564 and will signal an error at runtime.
1565 * enhancement: SB-THREAD package now exports a semaphore interface.
1566 * enhancement: CONS can now stack-allocate on x86 and
1567 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1569 * enhancement: nested lists can now be stack allocated on
1570 platforms providing stack allocation support.
1571 * enhancement: dynamic-extent support has been extended to support
1572 cases where there are multiple possible sources for the stack
1574 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1575 if the mutex is uncontested on Linux.
1576 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1577 as specified by the CLHS. (thanks to Tobias Rittweiler)
1578 * bug fix: NaN comparison now works on x86-64.
1579 * bug fix: CLOSE :ABORT T on a stream with pending output now
1581 * bug fix: instances of non-standard metaclasses using standard
1582 instance structure protocol sometimes missed the slot type checks
1584 * bug fix: known functions can be inlined in high-debug code.
1586 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1587 * minor incompatible change: the MSI installer on Windows no longer
1588 associates .lisp and .fasl files with the installed SBCL.
1589 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1590 on Windows. (thanks to Luis Oliviera)
1591 * new feature: SB-CLTL2 contrib module now implements
1592 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1593 * optimization: scavenging weak pointers is now more efficient,
1594 requiring O(1) instead of O(N) per weak pointer to identify
1595 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1596 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1597 method bodies using constant slot-names when the first argument is
1598 a specializer parameter for the method.
1599 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1600 names, when the class of the instance is a direct instance
1601 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1602 as slow as the constant slot-name case.)
1603 * optimization: member type construction is now O(N) instead
1605 * optimization: UNION and NUNION are now O(N+M) for large
1606 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1608 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1609 now more readable in environments like Slime which display it.
1610 (thanks to Tobias C. Rittweiler)
1611 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1612 was able to infer the correct argument type for the object on which
1613 the CAS operation was being performed.
1614 * bug fix: copy propagation interfered with parallel assignment
1615 semantics in local calls. (reported by Paul Khuong)
1616 * bug fix: the signed modular fixnum shift compiled to wrong code on
1617 x86 and x86-64. (spotted by a slight modification to some of
1620 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1621 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1622 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1623 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1625 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1626 and generic function now print the object identity for anonymous
1627 instances. (thanks to Attila Lendvai)
1628 * enhancement: as an extension to MOP, SBCL now supports SETF of
1629 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1630 (thanks to Attila Lendvai)
1631 * enhancement: sb-cover has an alternate annotation mode which puts
1632 the form annotations at the car of the form, instead of annotating
1633 it completely. The benefit of this mode is that it shows better
1634 which forms were instrumented by the compiler.
1635 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1636 by printer control variables. (reported by Dan Corkill)
1637 * bug fix: system leaked memory when delayed output was performed by
1638 the OS in smaller chunks then expected. (thanks to David Smith)
1639 * bug fix: system leaked memory when file streams were not closed
1641 * bug fix: large objects written to slow streams that were modified
1642 after the write could end up with the modified state written to
1643 the underlying file descriptor.
1644 * bug fix: multiple threads operating in parallel on the same stream
1645 could cause buffer-overflows.
1646 * bug fix: source location information is stored correctly
1647 (broken since 1.0.6). This bug would generally show up as the
1648 Slime debugger highlighting the wrong form when the sldb-show-source
1650 * bug fix: Branch forms are again annotated as branches in the sb-cover
1652 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1653 on x86-64. (reported by Gregory Vanuxem)
1654 * bug fix: EQUALP could return wrong results for structures with raw
1655 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1656 word). (reported by Vjacheslav Fyodorov)
1657 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1660 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1661 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1662 atomic compare-and-swap operations on threaded platforms.
1663 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1664 allows assigning a global minimum value to optimization qualities
1665 (overriding proclamations and declarations).
1666 * enhancement: closed over variables can be stack-allocated on x86
1668 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1670 * optimization: slot definition lookup is now O(1). This speeds up
1671 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1672 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1673 * optimization: ASSOC and MEMBER can now be open-coded for all
1674 combinations of keyword arguments when second argument is constant
1675 and SPEED >= SPACE. In other cases a specialized version is
1677 * bug fix: using obsoleted structure instances with TYPEP and
1678 generic functions now signals a sensible error.
1679 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1680 (reported by Kristoffer Kvello)
1681 * bug fix: backtrace construction is now more careful when making
1682 lisp-objects from pointers on the stack, to avoid creating bogus
1683 objects that can be seen by the GC.
1684 * bug fix: defaulting of values in contexts expecting more than 7
1685 variables now works on x86-64. (reported by Christopher Laux)
1686 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1688 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1689 as the property-list of a symbol.
1690 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1691 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1692 situations requested, are once again file-compileable. (reported
1695 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1696 * MOP improvement: support for user-defined subclasses of
1697 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1698 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1699 the expansion of DEFMETHOD, is responsible for generating a form
1700 which creates a list of specializers when evaluated. Additional
1701 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1702 debugging and introspective support.
1703 * minor incompatible change: the (unsupported) spinlock interface
1704 has changed: free spinlock now has the value NIL, and a held spinlock
1705 has the owning thread as its value.
1706 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1707 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1709 * enhancement: name of a socket-stream is now "a socket" instead of
1710 "a constant string".
1711 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1712 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1713 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1714 for generic functions. (Thanks to Tobias C. Rittweiler)
1715 * optimization: bignum printing speed has been improved by 20-40%
1716 (depending on the bignum size.)
1717 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1719 * bug fix: the cache used by the CLOS to store precomputed effective
1720 methods, slot offsets, and constant return values is now thread and
1722 * bug fix: generic function dispatch function updating is now thread
1723 and interrupt safe (in the sense that the known issues have been
1725 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1726 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1727 * bug fix: asdf systems with dependencies to the SB-POSIX or
1728 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1729 * bug fix: interrupt safety of applicable method computation has been
1732 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1733 * new contrib: sb-cover, an experimental code coverage tool, is included
1734 as a contrib module.
1735 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1736 significantly faster.
1737 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1738 produce more efficient code on x86-64 if the compiler can determine
1739 that (+ INDEX <constant>) does not require a bounds check and FOO
1740 has an element type at least 8 bits wide.
1741 * enhancement: a new, experimental synchronous timeout facility is
1742 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1743 * enhancement: when a symbol name conflict error arises, the
1744 conflicting symbols are always printed with a package prefix.
1745 (thanks to Kevin Reid)
1746 * enhancement: stepping is now once again supported on the SPARC and
1747 MIPS platforms. (It is also now more likely to work on CheneyGC
1749 * enhancement: sb-sprof can now also track and report accurate call
1751 * bug fixes: the treatment of non-standard subclasses of
1752 SB-MOP:SPECIALIZER is more correct.
1753 * incompatible change: PURIFY no longer copies the data from the
1754 dynamic space into the static and read-only spaces on platforms
1755 that use the generational garbage collector
1756 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1758 * bug fix: GC race condition occasionally resulting in crashes with
1759 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1761 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1763 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1764 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1765 * bug fix: an asynchronous interrupt could previously leave the
1766 system running with GC inhibited.
1767 * bug fix: a DECLARE form evaluated at top-level now causes an error
1768 rather than silently (or verbosely) returning NIL.
1769 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1770 result in a error being signalled due to source form lookup errors.
1771 (reported by Peter Graves)
1773 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1774 * incompatible change: removed writer methods for host-ent-name,
1775 host-ent-addresses -- changing the values did not update the DNS
1777 * minor incompatible change: changed experimental JOIN-THREAD interface
1778 * documentation: the manual now lists reader and writer methods
1779 in class slot documentation sections. (thanks to Richard M Kreuter)
1780 * documentation: unwinding from asyncronous events has been
1781 documented as unsafe.
1782 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1783 in multithreaded application code.
1784 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1785 platforms. (thanks to James Anderson for the optimization hint)
1786 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1788 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1789 variants no longer cons.
1790 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1791 their NOT- variants no longer cons.
1792 * optimization: EQUAL hash tables no longer use SXHASH for objects
1793 of all data types, but instead use an EQL hash for types for which
1794 EQUAL is the same as EQL.
1795 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1796 are significantly faster.
1797 * optimization: new STRING-OUTPUT-STREAM implementation is much
1798 faster for large outputs and conses 30% less on average.
1799 * enhancement: XREF information is now collected for references made
1800 to global variables using SYMBOL-VALUE and a constant argument.
1801 * enhancement: SIGINT now causes a specific condition
1802 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1803 * bug fix: FILE-POSITION used to signal an error in some cases where
1804 ANSI requires it to return NIL.
1805 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1806 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1807 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1809 * bug fix: bad type declaration in the CLOS implementation has
1810 been fixed. (reported by James Anderson)
1811 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1812 (thanks to Lutz Euler)
1813 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1814 required by the CLHS. (reported by Samium Gromoff)
1815 * bug fix: dead unbound variable references now signal an error.
1816 (reported by Marco Monteiro)
1817 * bug fix: / with an unused value was being deleted in safe code.
1818 (thanks to Marco Monteiro and Kevin Reid)
1819 * bug fix: number of characters that can be written onto a single
1820 line in a file is unlimited.
1821 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1822 been fixed by inhibiting interrupts for when GC is disabled.
1823 * bug fix: some interrupt safety issues with GETHASH, (SETF
1824 GETHASH), CLRHASH and REMHASH have been fixed.
1825 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1826 specifier no longer causes infinite recursion.
1827 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1828 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1829 * bug fix: an &environment argument with the correct variable information
1830 is passed to macros that are expanded during byte compilation.
1831 (reported by Samium Gromoff)
1832 * bug fix: a logic error was causing the hash function for bignums to
1833 have excessive amounts of collisions. (reported by Faré Rideau)
1834 * bug fix: modifying the contents of an array could change the return
1835 value of SXHASH on that array, which is only allowed for strings
1836 and bit vectors. (bug introduced in 0.9.16)
1837 * improvement: the x86-64/darwin port now passes all tests (except
1838 for the debugger tests) but should still be considered
1839 experimental until this is fixed.
1840 * improvement: a style-warning is signaled for CASE (etc) clauses with
1841 duplicate keys. (thanks to Kevin Reid)
1842 * improvement: macos/x86 and macos/x86-64 now use mach exception
1843 handlers for dealing with illegal instructions (for trapping and
1844 error handling) and memory protection violations (for GC).
1846 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1847 * new platform: experimental support for x86-64/darwin (MacOS).
1848 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1849 and getnameinfo sockets functions are used instead of gethostbyaddr
1850 and gethostbyname, on platforms where the newer functions are available.
1851 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1853 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1854 don't print the startup banner, but behave as if --noinform was passed
1855 as a command line argument. (thanks to Kevin Reid)
1856 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1857 * optimization: code using alien values with undeclared types is much faster.
1858 * optimization: the compiler is now able to open code SEARCH in more cases.
1859 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1860 * bug fix: using standardized COMMON-LISP special variables as loop
1861 variables no longer signals bogus package lock violations. (reported
1863 * bug fix: declaring local loop variables to be of a range-limited type
1864 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1865 (reported by Andras Simon)
1866 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1867 bugs remain on x86-64.)
1868 * bug fix: the #= and ## reader macros now interact reasonably with
1869 funcallable instances.
1870 * bug fix: type-checks for function arguments were compiled using the
1871 compiler policy settings of the wrong lexical environment (in 1.0.2
1873 * bug fix: SHADOW accepts characters as string designators, as required
1874 by the spec (thanks to Eric Marsden)
1875 * bug fix: fixed GC safety issues when foreign functions are called with
1876 non-base strings as arguments
1877 * bug fix: more consistent error output for fatal-compiler-warnings, like
1879 * bug fix: functions with proper names were showing up as NIL in
1880 backtraces (reported by Edi Weitz, regression in 1.0.2)
1882 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1883 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1884 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1885 produce more efficient code on the x86 if the compiler can determine
1886 that (+ INDEX <constant>) does not require a bounds check and FOO
1887 has an element type at least 8 bits wide.
1888 * bug fix: references to undefined variables are handled the same way
1889 in toplevel forms as in the normal compiler
1890 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1892 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1893 (thanks to Jon Buller)
1894 * improvement: faster compilation times for complex functions
1895 * improvement: added readlink support to SB-POSIX (thanks to Richard
1898 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1899 * improvement: experimental support for mach exception handling on
1900 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1902 * improvement: support for GBK external format.
1903 (thanks to Chun Tian (binghe))
1904 * improvement: the debugger now displays variables that have been closed
1905 over, in code compiled with (DEBUG 2) or higher
1906 * improvement: support for executable cores on NetBSD (thanks to
1908 * new feature: added a RESTART-FRAME debugger command
1909 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1910 be used to provide an implementation for FILE-POSITION on Gray streams
1911 (thanks to Eric Marsden)
1912 * new feature: add syslog, openlog and closelog support to SB-POSIX
1913 (thanks to Richard Kreuter)
1914 * optimization: the function call overhead in code compiled with
1915 a high DEBUG optimization setting is significantly
1916 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1917 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1918 (thanks to Tony Martinez)
1919 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1920 evaluated once (reported by Kevin Reid)
1921 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1922 works again (thanks to Kilian Sprotte)
1923 * bug fix: an error is signaled for tagbodies with duplicate tags
1924 (thanks to Stephen Wilson)
1925 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1926 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1927 stack frames from alien callbacks.
1928 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1929 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1930 65k pages (thanks to David Woodhouse)
1931 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1933 changes in sbcl-1.0.1 relative to sbcl-1.0:
1934 * new platform: FreeBSD/x86-64, including support for threading.
1935 * new feature: the compiler stores cross-referencing information
1936 about function calls (who-calls), macroexpansion (who-macroexpands)
1937 and special variables (who-binds, who-sets, who-references) for code
1938 compiled with (< SPACE 3). This information is available through the
1939 sb-introspect contrib.
1940 * new feature: users may subclass SEQUENCE, and have instances of
1941 these classes interoperate with standard Common Lisp functions if
1942 a number of methods are defined. (This feature is experimental
1943 and the interface subject to change based on feedback from SBCL
1944 users and the general community)
1945 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1946 x86/x86-64, rather than the previous fixed depth of 8
1947 * improvement: another pthread back-end of mutex "pthread-futex".
1948 * bug fix: non-ascii command-line arguments are processed correctly
1949 (thanks to Yaroslav Kavenchuk)
1950 * bug fix: non-required arguments were not passed correctly when a method
1951 defined using DEFMETHOD was called from a mop-generated method using
1952 CALL-NEXT-METHOD (reported by Pascal Costanza)
1953 * bug fix: recursion is now permitted in accessors through
1954 SLOT-UNBOUND. (reported by Pascal Costanza)
1955 * bug fix: an error was signaled at startup if the HOME environment
1956 variable was defined, but had an empty value (reported by Peter Van Eynde)
1957 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1958 signal a PROGRAM-ERROR, not a BUG.
1959 * bug fix: SB-POSIX:READDIR works when built with large file support.
1960 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1962 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1963 for better automatic indentation support. (thanks to Matt Pillsbury)
1964 * optimization: loading generic functions no longer takes O(n^2) time,
1965 proportional to the amount of methods in the generic function
1966 (reported by Todd Sabin and Jeremy Brown)
1967 * optimization: the FIND and POSITION family of sequence functions
1968 are significantly faster on arrays whose element types have been
1970 * improvements to the Windows port:
1971 ** Intermittent heap corruption problems have been fixed. (thanks
1972 to Alastair Bridgewater)
1973 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1975 ** Lisp is able to unwind foreign exception frames from alien
1976 callbacks. (thanks to Alastair Bridgewater)
1978 changes in sbcl-1.0 relative to sbcl-0.9.18:
1979 * improvement: experimental support for threading on FreeBSD/x86.
1980 (thanks to NIIMI Satoshi)
1981 * improvement: runtime option --dynamic-space-size can be used
1982 to set the size of the dynamic space reserved on startup.
1983 * improvement: floating point modes in effect are now saved in
1984 core, and restored on startup.
1985 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1986 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1987 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1988 threads are not running after *SAVE-HOOKS* have run.
1989 * improvement: writes to CLOS instance slots are type-checked in code
1990 compiled with (SAFETY 3)
1991 * improvement: floating-point exception handling on FreeBSD (thanks to
1993 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1994 (thanks to Zach Beane)
1995 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1997 * improvement: added support for the Shift-JIS external format.
1998 (contributed by NIIMI Satoshi)
1999 * improvement: callbacks are supported on Linux/PPC. (thanks to
2001 * bug fix: compiler bug triggered by a (non-standard) VALUES
2002 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2003 * bug fix: file compiler no longer confuses validated and already
2004 dumped structurres. (reported by Kaersten Poeck)
2005 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2006 fill-pointer signals a type-error as required. (thanks to
2008 * bug fix: disassemly of funcallable instances works.
2009 * bug fix: single stepping on PPC.
2010 * bug fix: fix thread-safety problems in the type system (generally
2011 manifesting as nonsensical errors like "STRING is a bad type specifier
2012 for sequences" or "The value 1 is not of type FIXNUM")
2013 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2014 (reported by Josip Gracin)
2015 * bug fix: an error is signaled for attempts to displace arrays with
2016 incompatible element types (thanks to Mario Mommer)
2017 * bug fix: more correct handling of wide characters in debug info
2018 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2019 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2020 and don't cause extra consing
2021 * optimization: MAP and MAP-INTO are significantly faster on vectors
2022 whose elements types have been declared.
2023 * Improvements to SB-SPROF:
2024 ** Support for allocation profiling
2025 ** Reduced profiling overhead, especially for long profiling runs
2026 * Improvements to the Windows port:
2027 ** floating point exceptions are now reported correctly.
2028 ** stack exhaustion detection works partially.
2029 ** more accurate GET-INTERNAL-REAL-TIME.
2030 ** better RUN-PROGRAM behaviour in case of errors in the child
2032 ** PROBE-FILE now simplifies pathnames correctly.
2033 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2034 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2035 1st 1970 (although time timezone data will be unreliable).
2036 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2038 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2039 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2040 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2042 * bug fix: two potential GC deadlocks affecting threaded builds.
2043 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2044 returns T (reported by Anton Kazennikov)
2045 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2046 with non-variable places
2047 * bug fix: remove a race condition in the setting of
2048 funcallable-instance functions, this should make threaded CLOS
2049 code more stable against memory faults.
2050 * bug fix: corruption of specials when unbinding is interrupted by an
2051 asynchronous unwind (reported by Hannu Koivisto)
2052 * improvement: the debugger will now also display local variables that
2053 are only used once, for code compiled with a DEBUG optimization quality
2056 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2057 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2058 * incompatible change: External-format support for FFI calls. The
2059 SB-ALIEN:C-STRING no longer implies an ASCII
2060 external-format. Instead the string is subject to external-format
2061 conversion. Additionally return values of type SB-ALIEN:C-STRING
2062 are by default of type (SIMPLE-ARRAY CHARACTER), not
2063 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2064 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2065 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2066 * incompatible change: SB-EXT package no longer contains the
2067 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2068 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2070 * incompatible change: the single-stepper is no longer available
2071 on Alpha, Mips and Sparc platforms.
2072 * minor incompatible change: the direct superclasses of
2073 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2074 not (STANDARD-OBJECT FUNCTION). This makes the
2075 class-precedence-lists of GENERIC-FUNCTION and
2076 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2078 * minor incompatible change: the default stream external format on
2079 non-unicode SBCL is no longer detected from the locale, but is always
2081 * new feature: Add a version of evaluator that uses an interpreter instead
2082 of the compiler. EVAL still uses the compiler by default, to switch it
2083 to use the interpreter, set the value of the variable
2084 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2085 * minor incompatible change: the single-stepper REPL has been merged
2086 with the normal debugger (see the "Stepping" heading of the debugger help
2087 for more details). The debugger command STEP will no longer switch
2088 to the single-stepper REPL.
2089 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2090 for a type now works.
2091 * bug fix: loading of default sysinit file works. (thanks to Leonid
2093 * bug fix: better detection of circularities in the file-compiler.
2094 (reported by Marco Monteiro)
2095 * bug fix: the CL pathname functions now work with files that have
2096 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2097 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2098 systems with Unix98 pty semantics.
2099 * bug fix: ASDF-INSTALL will now work with bsd tar.
2100 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2102 * bug fix: timers expiring in dead threads no longer cause a
2103 type-error (reported by Paul "Nonny Mouse").
2104 * bug fix: thanks to more lightweight single-stepper instrumentation,
2105 code compiled with (DEBUG 3) will compile and execute significantly faster,
2106 and will have more accurate type-inferencing than before
2107 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2108 whose bindings are modified
2109 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2110 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2111 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2112 CL:SOFTWARE-VERSION with proper version
2114 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2115 * feature: implemented the READER-METHOD-CLASS and
2116 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2117 as specified by AMOP.
2118 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2120 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2121 (thanks to Lutz Euler)
2122 * optimization: hashing of general arrays and vectors has been
2123 improved. (reported by Any Fingerhut)
2124 * enhancement: SB-INTROSPECT is now able to find definitions of
2125 profiled functions. (thanks to Troels Henriksen)
2126 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2127 as well, allowing compiler-macros for SETF-functions to expand.
2128 * enhancement: step-instrumentation no longer wraps known
2129 single-value functions with multiple-value context, allowing
2130 better type inference.
2131 * fixed bug #337: use of MAKE-METHOD in method combination now works
2132 even in the presence of user-defined method classes. (reported by
2133 Bruno Haible and Pascal Costanza)
2134 * fixed bug #339(c): if there are applicable methods not part of any
2135 long-form method-combination group, call INVALID-METHOD-ERROR.
2136 (reported by Bruno Haible)
2137 * fixed bug #361: the :FUNCTION initarg in the protocol for
2138 initialization of methods can now be used to override
2139 internally-produced optimized functions. (reported by Bruno
2141 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2142 system-provided lambda expression no longer cause warnings about
2143 unbound #:|pv-table| symbols.
2144 * bug fix: improved the handling of type declarations and the
2145 detection of violations for keyword arguments with non-constant
2147 * bug fix: potentially erronous calls to PATHNAME and
2148 MERGE-PATHNAMES were being flushed in some cases.
2149 (reported by Richard Kreuter)
2150 * bug fix: compiled calls to TYPEP were mishandling obsolete
2151 instances. (reported by James Bielman and Attila Lendvai)
2152 * bug fix: format strings with ~> without matching ~< no longer
2153 trigger an AVER, but signal an understandable error instead.
2154 (reported by Antonio Martinez)
2155 * bug fix: specifying an output-file without a pathname-type for
2156 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2157 of input-file instead of "fasl". (reported by Robert Dodier)
2158 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2159 (reported by James Y Knight).
2160 * bug fix: compiler-macros-function did not consider the environment
2161 argument for shadowing by local functions.
2162 * bug fix: compiler-macros expansion was inhibited by local INLINE
2164 * bug fix: inline expansions of known functions were subject to
2165 step-instrumentation in high debug policies, leading to problems
2166 with type-inference.
2167 * bug fix: compiler failed to differentiate between different CONS
2168 types in some cases.
2169 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2170 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2171 * bug fix: #368: incorrect use of expressed vs. upgraded array
2173 * bug fix: #306a: more precise unions of array types.
2174 * thread-safety improvements:
2175 ** CONDITION-WAIT could return early on Linux, if the thread was
2176 interrupted and subsequently continued with SIGCONT.
2177 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2179 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2180 * added support for the ucs-2 external format. (contributed by Ivan
2182 * minor incompatible change: pretty printing of objects of type
2183 (cons symbol) is, in the default pprint-dispatch-table, now
2184 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2186 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2187 called later in a class's lifetime, possibly as late as when the
2188 first instance of the class is created. Previously,
2189 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2190 class became finalizeable.
2191 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2192 for multibyte external-format streams. (thanks to "vbzoli")
2193 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2194 with :ALLOCATION :CLASS inherited from superclasses of the
2196 * fixed bug: anonymous classes can now be created using the :NAME
2197 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2198 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2199 * fixed bug: core-files saved with :EXECUTABLE T can again be
2200 executed when SBCL_HOME isn't set. (reported by James Knight)
2201 * fixed bug: toplevel LOCALLY forms with declarations could
2202 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2203 * fixed bug: printing from several different threads using different
2204 values of *print-case* could cause invalid output, due to
2205 some internal special variables of the printer not being bound
2206 thread-locally (reported by Max Mikhanosha)
2207 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2208 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2209 (reported by Pascal Costanza)
2210 * fixed bug: FINALIZE-INHERITANCE is called from
2211 REINITIALIZE-INSTANCE on classes when the class has previously
2212 been finalized, as required by AMOP.
2213 * minor code generation optimizations:
2214 ** better register allocation in CLOS dispatching functions
2215 ** overflow detection when coercing signed bytes to fixnums on x86-64
2216 ** is now implemented with one IMUL instruction instead of three shifts
2217 ** more efficient bit-vector access on x86 and x86-64
2218 ** more efficient access to raw structure slots on x86 and x86-64
2219 * fixed some bugs revealed by Paul Dietz' test suite:
2220 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2221 return its argument.
2223 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2224 * feature: thread support on Solaris/x86, and experimental thread support
2226 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2228 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2229 default method for SLOT-UNBOUND.
2230 * minor incompatible change: prevent the user from specializing the
2231 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2232 somewhat counter to the intent of the protocol, I (CSR) think, and
2233 additionally it just doesn't work in SBCL as currently
2234 implemented, thanks to optimizations (that are always valid for
2235 the other three SLOT-VALUEish functions, but not for the setter).
2236 * minor incompatible change: the :SB-LDB feature is now enabled by
2237 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2238 the low-level debugger.
2239 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2240 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2241 down to an SB-SYS:FD-STREAM, allowing direct communication in
2242 more cases. Temporary files and pipes are still used as a fallback
2244 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2245 on the non-reentrant C functions localtime(3) and gmtime(3).
2246 * bug fix: global optimization policy was not visible in LOCALLY and
2248 * bug fix: class objects can be used as specializers in methods.
2249 (reported by Pascal Costanza)
2250 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2251 with a type error. (reported by blitz_ on #lisp)
2252 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2253 failed with a type error. (reported by Pascal Bourguignon)
2254 * bug fix: merging pathnames against defaults with :DIRECTORY
2255 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2256 (reported by James Y Knight)
2257 * bug fix: saving large (>2GB) cores on x86-64 now works
2258 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2259 constant index and a (simple-array (signed-byte 32)) array
2260 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2261 error (patch by Robert J. Macomber)
2262 * feature: TIME now displays the amount of run-time spent in GC
2263 * bug fix: The debugger now does a better job of respecting
2264 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2265 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2266 workaround for bug 403.)
2267 * bug fix: floating point exception handling now works on FreeBSD
2268 (thanks to NIIMI Satoshi)
2269 * fixed some bugs revealed by Paul Dietz' test suite:
2270 ** MISC.641: LET-conversion were not supposed to work in late
2272 * improvements to the Win32/x86 port:
2273 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2274 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2276 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2277 * new feature: source path information is generated for macro-expansion
2278 errors for use in IDE's like Slime (thanks to Helmut Eller)
2279 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2280 * bug fix: compiler does not loop forever on an invalid type in
2282 * improvement: compilation of most CLOS applications is significantly
2284 * optimization: added a limited bytecode compiler for simple toplevel
2285 forms, speeding up compilation and FASL loading
2286 * bug fix: the statistical profiler now properly distinguishes anonymous
2289 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2290 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2291 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2292 into subclasses of the finalized class. Now user calls to
2293 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2294 system return before any subclasses are finalized.
2295 * minor incompatible change: The reader no longer ignores errors
2296 regarding non-existent packages in #+ and #- feature tests.
2297 * new feature: command line options --no-sysinit, --no-userinit to
2298 inhibit loading the corresponding init files
2299 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2300 for sending data through UDP sockets (thanks to François-René Rideau)
2301 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2302 error is signalled instead (thanks to François-René Rideau)
2303 * minor incompatible change: Error signalling behaviour of lexical
2304 operations violating package locks has changed slightly. Refer to
2305 documentation on package locks for details.
2306 * enhancement: EVAL can process IF-expressions without resorting to the
2308 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2309 constant-folded properly due to missing out-of-line functions.
2310 (reported by Mika Pihlajamäki)
2311 * bug fix: LISTEN sometimes returned T even in cases where no data was
2312 immediately available from the stream
2313 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2314 were reversed. (reported by Levente Mészáros)
2315 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2316 when given a vector displaced to an adjustable array. (reported
2318 * bug fix: derivation of float boundaries from numbers outside the
2319 appropriate float range (reported by John Wiseman)
2320 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2322 * bug fix: precomputing cache entries for generic functions with
2323 some subclasses of specializers as yet invalid does not attempt to
2324 fill a cache line with a negative offset. (reported by Levente
2326 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2327 allow condition class objects as arguments to DOCUMENTATION and
2328 (SETF DOCUMENTATION); only find and set documentation for
2329 structure names for the STRUCTURE doc-type. (suggested by Gary
2331 * improvements to the Win32/x86 port:
2332 ** (user-homedir-pathname) and default initialization file
2333 locations now know about the user's "Documents and Settings"
2334 directory (thanks to Yaroslav Kavenchuk)
2335 ** run-program is implemented (thanks to Mike Thomas)
2336 ** sockets support (thanks to Timothy Ritchey)
2337 ** better backtrace support (thanks to Alastair Bridgewater)
2338 ** sb-grovel supported
2339 ** asdf-install and sb-posix work somewhat
2340 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2341 * improvements to the Solaris/x86 port:
2342 ** works on Solaris 11/Solaris Express
2343 ** floating-point exception handling support
2344 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2345 * fixed some bugs revealed by Paul Dietz' test suite:
2346 ** REMOVE-METHOD returns its generic function argument even when
2347 the method is not one of the generic functions' methods.
2348 ** objects declared as MEMBER types can be admissible arguments to
2349 structure accessors.
2350 ** printing characters should simply be printed by the FORMAT ~:C
2352 ** compiler failure when compiling functions with hairy constant
2353 defaults for optional parameters.
2354 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2355 function, which is already optimized.
2357 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2358 * new platform: experimental support for SBCL x86/Darwin, including
2359 MacOS X 10.4.5 on Intel.
2360 * new feature: Unicode character names are now known to the system
2361 (through CHAR-NAME and NAME-CHAR).
2362 * new feature: the filesystem location of SBCL's core file is
2363 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2364 * minor incompatible change: the contrib modules SB-POSIX and
2365 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2366 this change is to make it easier to distribute
2367 location-independent binaries.
2368 * bug fix: as implied by AMOP, standardized classes no longer have
2369 slots named by external symbols of public packages. (reported by
2371 * optimization: calling functions via constant symbols -- as in
2372 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2373 via the function object as in (FUNCALL #'FOO).
2374 * optimization: on x86 and x86-64, the calling convention for the
2375 case of dealing with an unknown number of values has been altered
2376 to be friendlier to the prediction heuristics implemented,
2377 particularly with reference to CALL and RET pairing. (thanks to
2378 Alastair Bridgewater)
2379 * optimization: on x86, the code for access to thread-local symbol
2380 values and binding/unbinding of thread-local symbols is smaller.
2381 (thanks to Alastair Bridgewater)
2382 * enhancement: CONSTANTP is now able to determine constantness of
2383 more complex forms, including calls to constant-foldable standardized
2384 functions and some special forms beyond QUOTE.
2385 * fixed bug: occasional GC crashes on Solaris/x86
2386 * optimization: x86-64 supports stack allocation of results of simple
2387 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2388 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2389 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2390 (thanks to James Knight)
2391 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2392 by the standard (thanks to Stephen Compall)
2394 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2395 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2396 be used for bundling the runtime and the core file into one
2397 executable binary. This feature is not currently supported on all SBCL
2398 platforms. (thanks to James Bielman and NIIMI Satoshi)
2399 * new feature: a generational or ephemeral garbage collector is now
2400 the default on the PowerPC platform (both Linux and Darwin). The
2401 old Cheney (stop and copy) collector is a build-time option.
2402 (thanks to Cyrus Harmon, after Raymond Toy)
2403 * minor incompatible change: the method by which SBCL finds its
2404 contributed modules has changed; it no longer relies on symbolic
2405 links from an $SBCL_HOME/systems directory, but searches directly
2406 in the subdirectories of $SBCL_HOME.
2407 * enhancement: the dynamic heap size on the Linux/PPC platform is
2408 markedly larger, even using the older Cheney garbage collector.
2409 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2410 certain complicated string types. (reported by Gary King)
2411 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2412 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2413 * fixed bug: DOCUMENTATION on structures no longer signals an
2414 error if no structure type of the right name exists. (reported by
2416 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2417 applicable non-standard primary or :AROUND method on
2418 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2419 no longer cause unbound variable errors. (reported by Kevin Reid)
2420 * fixed bug: metacircle resolution in cases where methods have slots
2421 added before the slots from STANDARD-METHOD. (reported by Jean
2423 * fixed bug: the Power PC assembly code for calling into lisp
2424 sometimes computed its return address wrongly (depending on the
2425 15th bit of the address, fixed at link time). This used to
2426 manifest itself in a segmentation violation while building PCL.
2427 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2428 many others over the years)
2429 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2430 the stack pointer (treated as a signed integer) is negative.
2431 (thanks to Peter van Eynde)
2433 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2434 * new platform: experimental support for the Windows operating
2435 system has been added. (thanks to Alastair Bridgewater)
2436 * fixed several bugs in and robustified the PPC FFI (including
2437 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2438 * bug fix: allow non-simple string symbol names (reported by Paul
2440 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2442 * bug fix: saving a core corrupted callbacks on x86/x86-64
2443 * bug fix: closed a loophole in metacircularity detection and
2444 grounding in the PCL implementation of CLOS.
2445 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2446 (reported by tomppa on #lisp)
2447 * bug fix: clear the direction flag on Lisp -> C transitions, as
2448 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2449 (reported by Andrej Grozin and Hendrik Maryns)
2450 * optimization: major improvements to GC efficiency on GENCGC platforms
2451 * optimization: faster implementation of EQUAL
2452 * optimization: emit more efficient opcodes for some common
2453 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2454 * optimization: several other minor code-generation improvements on x86-64
2455 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2457 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2458 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2459 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2460 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2461 by ANSI as a generic function, and for consistency (SETF
2462 GENERIC-FUNCTION-NAME) is treated likewise.
2463 * fixed bug #233.b: make constraint propagation notice when a variable
2464 value is changed after it is referenced but before it is used
2465 * fixed bug #296: no more arbitrary behaviour from filenames with
2466 odd characters as --load arguments. (reported by Adam Warner)
2467 * fixed bug #390: :CHARACTER-SET pathname components now work as
2468 expected. (reported by Tim Daly Jr)
2469 * fixed bug #391: complicated :TYPE intersections in slot
2470 definitions no longer cause an error in PCL internals.
2471 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2472 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2473 returning the number of octets which would be written to the
2474 file-stream. (thanks to Robert J. Macomber)
2475 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2476 arguments to the internal stream functions. (thanks to David
2478 * bug fix: stack exhaustion is now handled on the x86/SunOS
2479 platform. (thanks to Daisuke Homma)
2480 * bug fix: more accurate ROOM results on GENCGC platforms
2481 * optimization: improved type inference for arithmetic-for
2482 index variables in LOOP
2483 * optimization: faster floating-point SQRT on x86-64
2484 * fixed some bugs revealed by Paul Dietz' test suite:
2485 ** DOCUMENTATION returns NIL instead of "" for method combinations
2486 that don't have a docstring
2488 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2489 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2490 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2491 therefore are not customizeable by user code (as seems to be at
2492 least permitted and maybe required by AMOP). As a consolation,
2493 however, the SBCL implementation of these functions now calls
2494 REINITIALIZE-INSTANCE as specified by AMOP.
2495 * bug fix: slot-definition documentation is propagated as per ANSI
2496 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2497 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2498 argument, as do eslotd initialization methods. (from Pascal
2499 Costanza's "Closer" project)
2500 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2501 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2503 * bug fix: it is now possible to have more than one subclass of
2504 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2505 (reported by Bruno Haible, Pascal Costanza and others)
2506 * bug fix: the dependent update protocol now works for generic
2507 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2508 and Pascal Costanza)
2509 * bug fix: condition-class instances corresponding to
2510 DEFINE-CONDITION forms are now created eagerly. (reported by
2511 Kalle Olavi Niemitalo on comp.lang.lisp)
2512 * bug fix: floating point printing is more accurate in some
2513 circumstances. (thanks to Simon Alexander)
2514 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2515 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2516 * bug fix: callbacks on OS X now preserve stack-alignment.
2517 (thanks to Cyrus Harmon)
2518 * enhancement: the x86-64 disassembler is much better at
2519 disassembling SSE instructions. (thanks to Lutz Euler)
2520 * enhancement: CHECK-TYPE on a variable now allows type-inference
2521 (thanks to Vincent Arkesteijn)
2522 * optimization: improved performance of EUC-JP external format.
2523 (thanks to NIIMI Satoshi)
2524 * optimization: performance improvements to IO on file streams of
2525 :ELEMENT-TYPE CHARACTER
2526 * optimization: much faster memory allocation on x86-64
2527 * optimization: faster garbage collections (latency and throughput)
2529 * optimization: faster bignum subtraction and division on x86 and x86-64
2530 (thanks to Lutz Euler)
2531 * optimization: more accurate type-inference for loops that use a
2532 floating point index variable or a negative step.
2534 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2535 * bug fix: add a workaround to SBCL looping infinitely at startup on
2536 Linux kernels with apparently buggy implementations of personality().
2537 (thanks to Svein Ove Aas)
2538 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2539 (thanks to David Lichteblau)
2540 * bug fix: local bindings shadow global symbol macros for
2541 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2542 * optimization: non-open coded uses of numeric comparison operators
2543 (e.g. >) no longer cons when called with more than one parameter
2544 on platforms supporting dynamic-extent allocation.
2545 * enhancement: saving cores with foreign code loaded is now supported
2546 on MIPS/Linux in addition to the previously supported platforms.
2547 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2548 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2549 * bug fix: division by zero in sb-sprof when no samples were collected
2550 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2551 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2552 (thanks to Alexander Kjeldaas)
2553 * new feature: ignoring the return values of destructive functions
2554 like NREVERSE signals a compile-time style-warning.
2555 (thanks to Kevin Reid)
2556 * new feature: the alignment of alien structure fields can be
2557 explicitly specified. (thanks to Cyrus Harmon)
2558 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2559 and dump core on SIGQUIT
2561 ** incompatible change: threads do not inherit values of specials
2562 from their parents (see manual)
2563 ** bug fix: threads stacks belonging to dead threads are freed by the
2564 next exiting thread, no need to gc to collect thread stacks anymore
2565 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2566 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2567 ** bug fix: dynamic variable and thread start related gc lossage
2568 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2570 * fixed some bugs revealed by Paul Dietz' test suite:
2571 ** SUBTYPEP is slightly more accurate on heinously complicated
2572 CONS types where some of the members have uncertain (in the
2573 NIL, NIL sense) type relationships to each other.
2575 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2576 no longer purified unless :PURIFY T is explicitly specified.
2577 ** Non-purified cores are significantly smaller than before
2579 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2580 * new feature: timers based on Zach Beane's excellent timer package
2581 * added support for the following external formats: koi8-u,
2582 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2583 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2584 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2585 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2586 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2587 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2588 * incompatible change: a threaded SBCL will no longer revert to
2589 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2590 * bug fix: interrupts are disabled until startup is complete; no
2591 more sigsegvs when receiving a signal to soon
2592 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2594 * bug fix: add a workaround for the memory randomization features in
2595 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2596 workaround will only be in effect on systems with the proc filesystem
2598 * bug fix: printing objects of type HASH-TABLE signals a
2599 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2601 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2602 have been running for over 50 days. (reported by Gilbert Baumann)
2603 * bug fix: the logic for getting names of functions gets less
2604 confused when confronded with alternate-metaclass
2605 funcallable-instances. (reported by Cyrus Harmon)
2606 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2607 consistent, even on internal alternate-metaclass objects.
2608 * bug fix: flush closure information collected by physical
2609 environment analysis prepass before the main pass. (bug reported
2611 * bug fix: compiler pack phase does not modify a hashtable, which is
2612 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2613 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2614 may be expanded. (reported by Alexander <malishev> on c.l.l)
2615 * bug fix: no more style-warnings when compiling code using LAST
2616 under high-SPEED low-SPACE settings. (reported by David Wallin
2618 * fixed some incompatibilities between SBCL's MOP and the MOP
2620 ** the METAOBJECT class is now implemented;
2621 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2622 STANDARD-OBJECT, as required;
2623 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2624 now compatible (as required by VALIDATE-SUPERCLASS); there
2625 remains a consistency requirement over the presence or absence
2626 of the FUNCTION class in the superclass list of finalized
2627 classes; see the manual for more details;
2628 ** the :AROUND method for COMPUTE-SLOTS on
2629 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2630 requested slot ordering.
2632 ** bug fix: parent thread now can be gc'ed even with a live
2634 ** bug fix: binding a special with PROGV to no value is not
2635 the same as that symbol not having been bound (thanks to
2637 ** bug fix: binding specials is thread safe (thanks to
2639 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2640 and SB-SPROF do not die with 'no handler for signal XX in
2641 interrupt_handle_now(..)' anymore
2642 ** bug fix: WITH-TIMEOUT works with multiple running threads
2643 * fixed some bugs revealed by Paul Dietz' test suite:
2644 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2645 the :method-class keyword argument.
2647 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2648 * new port: the Solaris operating system on x86 processors is now
2649 mostly supported, though some rough edges in the environment
2650 remain. (thanks to Daisuke Homma)
2651 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2652 space for its heap. (thanks to Thiemo Seufer)
2653 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2654 closures. (thanks to Thiemo Seufer)
2655 * minor incompatible change: eof selects abort in the debugger.
2656 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2657 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2659 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2660 deprecated, and will go away in a future revision of SBCL.
2661 * minor incompatible change: GC-ON and GC-OFF are no longer
2662 implemented with a counter, it does not matter how many times gc
2663 is switched on or off
2664 * bug fix: discriminating functions for generic function classes
2665 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2666 make invalid assumptions about method precedence order. (reported
2668 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2669 platforms. (thanks to Thiemo Seufer)
2670 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2671 * bug fix: correct pathname printing with printer escaping is on.
2672 (thanks to Kevin Reid)
2673 * bug fix: complex VOP definitions in "user-space" no longer trigger
2674 package locks. (reported by Zach Beane)
2675 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2676 for funcallable-instance functions, and is no different from
2678 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2679 characters in the current readtable. (reported by Nicholas Neuss)
2680 * bug fix: SUBTYPEP on various CONS types returns more a more
2681 accurate acknowledgment of its certainty.
2682 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2683 lists in some cases. This partially fixes bug 384.
2684 * flush all standard streams before prompting in the REPL and the
2686 * bug fix: signal handling and triggering gc do not conflict
2687 directly anymore, in particular a high frequency sb-sprof does
2688 not prevent gc from running
2689 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2690 approximation for timezone and DST information between the
2691 universal time epoch and the smallest negative 32-bit time_t.
2692 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2693 year 1899 so long as the encoded time is non-negative.
2694 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2695 the correct answer for non-constant rotate amounts when performing
2696 an inline 32-bit rotation.
2698 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2699 there is only one thread in the session
2700 ** bug fix: memory leak for streams created in one thread and
2701 written to in another
2702 ** bug fix: lockup when compiled with gcc4
2703 ** bug fix: race that allows the gc to be triggered when gc is
2705 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2706 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2708 ** bug fix: finished threads are gc'ed properly
2709 * fixed some bugs revealed by Paul Dietz' test suite:
2710 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2711 has arguments with a different set of applicable methods from
2712 the orignal arguments.
2713 ** The type error thrown by MAP now has a correct expected-type
2715 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2716 name a compiled function.
2717 ** Three MISC tests where a large bignum was improperly coerced to
2718 a float that couldn't represent that bignum during type
2719 derivation were fixed.
2720 ** SUBTYPEP can now handle types involving the negation of a
2721 list-form FUNCTION type.
2722 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2723 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2724 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2726 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2727 * New feature: Experimental support for bivalent streams: streams
2728 opened with :element-type :default now allow character and binary
2729 (unsigned-byte 8) I/O
2730 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2731 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2733 * bug fix: no more highly sporadic "couldn't check whether ~S is
2734 readable" when reading a stream and an interrupt hits in the middle
2735 of a select system call
2736 * compiler better recognizes complex arrays (reported by Eduardo
2738 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2739 for variables on SBCL built with linkage-tables. (reported by Luis
2741 * various error reporting improvements.
2742 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2743 (Thanks to Thiemo Seufer)
2744 * bug fix: nested reader invokations work correctly
2745 * bug fix: it is possible to have simultaneous references to foreign
2746 code and foreign data with the same name.
2748 ** added x86-64 support
2749 ** incompatible change: the threading api now works with thread
2750 objects instead of thread ids
2751 ** bug fix: threads are protected from signals and interruption when
2752 starting up or going down
2753 ** bug fix: a race where an exiting thread could lose its stack to gc
2754 ** bug fix: don't halt on infinite error in threads if possible
2755 ** fixed numerous gc deadlocks introduced in the pthread merge
2756 ** bug fix: fixed thread safety issues in read and print
2757 ** bug fix: debugger doesn't hang on session lock if interrupted at
2758 an inappropriate moment
2759 ** bug fix: run-program is now thread safe(r)
2760 ** bug fix: inner with-recursive-lock no longer releases the mutex
2761 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2762 * fixed some bugs revealed by Paul Dietz' test suite:
2763 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2764 EXPECTED-TYPE slots filled.
2765 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2767 ** MAKE-CONDITION accepts classes as type-designators.
2768 ** COMPILE may never return NIL.
2769 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2770 range before calling Unix time functions
2772 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2773 * numerous signal handling fixes to increase stability
2774 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2775 * minor incompatible change: we now correctly canonize default
2776 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2777 as per the MOP, rather than the historical (INITARG INITFUNCTION
2778 INITFORM). (reported by Bruno Haible)
2779 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2780 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2781 for more information.
2782 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2783 pathname is a directory pathname.
2784 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2785 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2787 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2788 :METACLASS argument in addition to a class name. (reported by
2789 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2790 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2791 (reported by Bruno Haible; patch from Gerd Moellmann)
2792 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2794 * bug fix: more cleanups to the floating point exception handling on
2795 x86-64 (thanks to James Knight)
2796 * bug fix: the compiler does not try to constant fold calls of
2797 COERCE and BIT-* functions when they return freshly constructed
2798 objects. (reported by Nikodemus Siivola and Paul Dietz)
2799 * optimization: improved the MIPS versions of generic (in the
2800 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2801 * optimization: direct conversion of (unsigned-byte 32) to floats on
2802 the PowerPC platform.
2803 * optimization: structure instances with raw slots now use less
2804 memory, and probably show better memory locality. (thanks to
2806 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2807 are treated as requests for stack allocation on the x86-64,
2808 Alpha-32, PPC and SPARC platforms.
2809 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2810 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2811 (thanks to Tony Martinez)
2813 ** gcing a dead thread can no longer lead to lockups
2814 ** threads block signals until they are set up properly
2815 ** errno is no longer shared by threads
2816 ** interrupt-thread restores the eflags register on x86
2817 ** fixed some lockups due to gc/thread interaction
2818 * fixed some bugs revealed by Paul Dietz' test suite:
2819 ** invalid dotted lists no longer raise a read error when
2820 *READ-SUPPRESS* is T
2821 ** signal an error if a symbol that names a declaration is used
2822 as the name of a type, or vice versa
2823 ** allow using the (declare (typespec var*)) abbreviation for
2824 (declare (type typespec var*)) with all type specifiers
2825 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2826 ** always return NIL from PPRINT-POP when OBJECT is NIL
2827 ** don't signal errors when pretty-printing malformed LABELS,
2828 FLET or MACROLET forms
2829 ** declarations in a DOLIST body are also in scope for the
2831 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2833 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2836 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2837 * fixed cross-compiler leakages that prevented building a 32-bit
2838 target with a 64-bit host compiler.
2839 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2840 opened with :IF-EXISTS :OVERWRITE.
2841 * fixed bug 281: error for an invalid qualifier in a short-form method
2842 combination method is not signalled until the faulty method is called.
2843 * bug fix: iteration variable type inferrer failed to deal with open
2844 intervals. (reported by Alan Shields)
2845 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2846 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2847 or more runtime options were provided to the sbcl binary.
2848 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2849 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2850 * optimization: there's now a fast-path for fixnum arguments in the
2851 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2852 * optimization: the code generated on x86-64 is more compact thanks
2853 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2854 * bug fix: floating-point exception handling now partly works on
2855 x86-64. (Thanks to James Knight)
2856 * improvement to the MIPS backend from Thiemo Seufer: C-style
2857 64-bit long long arguments and return values to alien functions
2859 * fixed some bugs revealed by Paul Dietz' test suite:
2860 ** the type-error signalled from WARN has a filled-in DATUM slot.
2861 ** the type-error required when a stream is not associated with
2862 a file has the stream as its datum.
2863 ** type-errors on single-floats on x86-64 no longer have
2864 :INVALID-OBJECT as the datum
2865 ** the type-errors signalled for invalid function names now have
2866 a correct expected type
2867 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2868 for structures defined with a :TYPE. Documentation strings for
2869 typed structures are no longer immediately discarded
2870 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2871 broadcast streams and synonym streams. FILE-LENGTH now also works
2872 on broadcast streams.
2874 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2875 * incompatible change: the --noprogrammer option, deprecated since
2876 version 0.7.5, has been removed. Please use the equivalent
2877 --disable-debugger option instead.
2878 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2880 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2881 inoperational for a while now) has been completely removed.
2882 * null lexical environments are now printed as #<NULL-LEXENV>,
2883 significantly reducing the amount of clutter in typical backtraces.
2884 * documentation on weak pointers, finalization, and after GC hooks
2885 has been added to the manual.
2886 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2887 as other specialized array types, is much faster. SUBSEQ and
2888 COPY-SEQ on such arrays have also been sped up.
2889 * optimization: EQL is now more efficient when at least other argument
2890 is known to be of type (OR FIXNUM (NOT NUMBER)).
2891 * fixed bug: the runtime is now less vulnerable to changes in the
2892 size of the SBCL object on OS X, and virtual memory is reserved for
2893 all spaces that need to be at a fixed address.
2894 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2895 * fixed bug: finalizers and after GC hooks that cause consing are now
2897 * fixed bug: compiler error messages and summaries are now printed to
2898 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2899 * fixed inference of the upper bound of an iteration variable.
2900 (reported by Rajat Datta).
2901 * fixed bug 211e: calling local functions with duplicated constant
2902 keyword argument no longer causes a bogus style warning about an
2904 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2905 ftype declaration to be disregarded. (reported by Dave Roberts)
2906 * fixed bug 373: caused by erronous compilation of references to alien
2907 variables in the runtime on ppc/darwin.
2908 * fixed bug 376: CONJUGATE type deriver.
2909 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2910 (reported by Baughn on #lisp)
2911 * a cross-compiler bug on non-x86 platforms has been identified and
2912 fixed. (thanks to Bruno Haible)
2913 * improvements to the MIPS runtime code for increased stability.
2914 (thanks to Thiemo Seufer)
2915 * increased the maximimum compact environment size to allow
2916 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2917 * partial workaround for bug 135: don't name the function we're
2918 calling for hairy cases of EVAL, so as not to accumulate one environment
2919 entry per call to EVAL. (reported by Kevin Reid)
2920 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2921 * optimization: type testing for non-vector arrays should be faster.
2922 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2924 * bug fix: setting 31st element of a bit vector to zero did not work
2926 * bug fix: redefining a class definition which failed due to a
2927 previous accessor / function clash now works (but see BUGS entry
2928 #380 for more problems in this area). (thanks to Zach Beane)
2929 * the long form of DEFINE-METHOD-COMBINATION disables method group
2930 checking when given a single method group with pattern *. (thanks
2932 * on x86 compiler supports stack allocation of results of simple
2933 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2934 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2935 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2936 * fixed some bugs related to Unicode integration:
2937 ** the restarts for recovering from input and output encoding
2938 errors only appear when there is in fact such an error to
2940 * fixed some bugs revealed by Paul Dietz' test suite:
2941 ** MISC.549 and similar: late transformation of unsafe type
2942 assertions into derived types caused unexpected code
2944 ** SCALE-FLOAT type deriver is less wrong.
2945 ** type derivers for EXP, LOG and similar functions compute result
2946 types for complex arguments better.
2947 ** (MISC.563) CONJUGATE type deriver works for very restricted
2949 ** out-of-line type testers for character strings are available.
2950 ** EQUAL compiler transform understands specialness of objects
2952 ** accessing double-floats stored on the stack now works on x86-64.
2953 ** debugger internals could sometimes create invalid lispobjs,
2954 resulting in GC crashes.
2955 ** MISC.548: type check weakening can convert required type into
2957 ** initialization forms for bindings are not in scope of free special
2960 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2961 * incompatible change: thread support for non-NPTL systems has
2962 been removed - locking is buggy and unreliable. A threaded
2963 SBCL build will now warn at startup and refuse to create
2964 new threads, unless futex support is detected in the kernel
2965 * incompatible change: the top level REPL now has only an ABORT
2966 restart associated with it, not TOPLEVEL and ABORT as it used to.
2967 TOP and TOPLEVEL are now available as debugger commands for
2968 returning to the top level.
2969 * incompatible change: forms evaluated in the REPL now use the
2970 global optimization policy.
2971 * incompatible change: user- and system-initialization files are
2972 no longer processed with LOAD, but by READ and EVAL; hence the
2973 global optimization policy, startup package, readtable, etc,
2975 * The .fasl file format number has been incremented because of
2976 various incompatible changes.
2977 * internal entry point details and argument counts no longer appear
2978 in backtraces unless explicitly requested by setting
2979 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2980 * built-in and standard functions no longer have names like "top
2981 level local call to FOO".
2982 * fixed bug 32: functions defined in non-null lexical environments
2983 now have more legible printed representation
2984 * fixed bug 33: functions defined in non-null lexical environemnts
2985 are now more amenable to inspection by INSPECT.
2986 * workaround for bug 354: XEPs no longer appear in backtraces unless
2987 explicitly requested.
2988 * fixed bug: receiving the signal which results from attempting to
2989 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2990 SIGBUS on other *BSDs) on architectures where the C stack is also
2991 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2992 to debugger confusion or wild instability. (reported by Cheuksan
2994 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2995 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2996 (reported by Lutz Euler)
2997 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2998 compiled code. (reported by Paul Dietz)
2999 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3000 specialized parameter to a method to something that is not TYPEP
3001 the specializer is now possible.
3002 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3003 face of package deletion.
3004 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3005 pathname. (reported by David Tolpin on c.l.l)
3006 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3007 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3008 STRING-STREAM and FILE-STREAM, respectively.
3009 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3010 than previously; in addition, its test suite is now run on build.
3011 (thanks to Luke Gorrie)
3012 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3013 * optimization: added a immediate representation for single-floats
3015 * fixed some bugs revealed by Paul Dietz' test suite:
3016 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3017 ** attempting to create a package with a colliding nickname causes
3018 correctable errors to be signalled.
3019 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3020 ** several x86-64 backend bugs related to sign-extension of immediate
3023 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3024 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3025 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3027 * fixed loading of multiply forward-referenced layouts.
3028 (thanks to Cheuksan Wang)
3029 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3030 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3031 (see COMPILE-FILE documentation for details of :PRINT option)
3032 * fixed bugs 19 and 317: fixed-format floating point printing is
3033 more accurate. This also fixes a bug reported by Adam Warner
3034 related to the ~@F format directive.
3035 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3037 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3038 dispatch table if the from-char is a dispatch macro character.
3039 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3040 by the wordsize no longer ignore the last word. (reported by Lutz
3042 * fixed bug in type checking of dynamic-extent variables. (reported
3044 * optimization: sequence traversal functions use their freedom to
3045 coerce function designators to functions.
3046 * optimization: code with many calls to CLOS methods specialized on
3047 CLOS classes has had redundant type checks removed.
3048 * optimization: added declarations to speed up operations that access
3049 the internal character database (for example STRING-UPCASE)
3050 * optimization: comparison operations between floats and sufficiently small
3051 fixnums no longer create extra rationals
3052 * fixed some bugs related to Unicode integration:
3053 ** portions of multibyte characters at the end of buffers for
3054 character-based file input are correctly transferred to the
3055 start of the buffer at the next read.
3056 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3057 passing it through to OPEN.
3058 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3059 argument given to internal calls to OPEN.
3060 ** the built-in comment readers (introduced by character sequences
3061 ";" and "#|") are more forgiving to encoding errors; they will
3062 STYLE-WARN and then attempt to resync the stream at a character
3063 boundary. (thanks to Teemu Kalvas)
3064 * fixed some bugs in the x86-64 port:
3065 ** Negative short int return values from c-calls are sign-extended
3067 ** The stack is aligned to 16-bytes for c-calls, as required by
3068 the ABI. (thanks to Cheuksan Wang)
3069 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3070 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3071 for enums. (thanks to Vincent Arkesteijn)
3072 ** Multiple small optimizations and bugfixes for floating point
3074 * fixed some bugs revealed by Paul Dietz' test suite:
3075 ** Space, Tab, Linefeed, Return and Page have the invalid
3076 secondary constituent character trait.
3077 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3079 ** WITH-INPUT-FROM-STRING should only update the index place on
3081 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3082 works more reliably.
3083 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3084 with one-dimensional arrays with fill pointers.
3085 ** TYPE-OF failed on a complex with an integer realpart and a
3087 ** compiler failure during type inference for the code of form
3088 (IF (EQL X (THE ...)) ...) (MISC.535).
3090 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3091 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3092 platform. The port supports 61-bit fixnums, large memory spaces
3093 and reloading shared object files.
3094 * enhancement: saving cores with foreign code loaded is now
3095 supported on ppc/Darwin in addition to the previously supported
3097 * enhancement: the statistical profiler now walks deeper into the
3098 call stack for more meaningful call-graphs and accrued time
3099 reports (x86/x86-64 only). It also now reports time spent in
3101 * enhancement: it is now possible to trace most individual methods
3102 of a generic function in addition to tracing the generic function
3104 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3106 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3107 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3108 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3109 produces an error. (thanks to Vincent Arkesteijn)
3110 * bug fix: NAMESTRING on pathnames with :WILD components in their
3111 directories works correctly. (thanks to Artem V. Andreev)
3112 * fixed bug 125: compiler preserves identity of closures. (reported
3114 * bug fixed: functions with &REST arguments sometimes failed with
3115 "Undefined function" when compiled with (DEBUG 3). (reported by
3117 * bug fix: overflow during compiling of setting element of a bit
3118 vector with constant index and value. (reported by Timmy Douglas)
3119 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3120 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3121 * on x86 compiler partially supports stack allocation of dynamic-extent
3123 * GO and RETURN-FROM do not check the extent of their exit points
3124 when compiled with SAFETY 0.
3125 * fixed some bugs related to Unicode integration:
3126 ** encoding and decoding errors are now much more robustly
3127 handled; it should now be possible to recover even from invalid
3128 input or output to the terminal. (thanks to Teemu Kalvas)
3129 ** provided a first cut at implementing STRING-TO-OCTETS and
3130 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3131 ** altered the SB-MD5 contributed module slightly, changing the
3132 interface just enough for it to be supportable for builds where
3133 lisp characters are not eight bits.
3134 * fixed some bugs revealed by Paul Dietz' test suite:
3135 ** the FORMATTER-generated functions for ~V[ conditionals require
3136 the correct number of arguments.
3137 ** READ-FROM-STRING returns the mandated second value when applied
3138 to displaced strings.
3139 ** the #\Rubout and #\Backspace characters are treated as invalid
3140 constituent characters by the tokenizer.
3142 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3143 * new feature: reloading changed shared object files with
3144 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3145 * new feature: references to foreign variables and functions
3146 can now be compiled and loaded before the corresponding shared
3147 object file is loaded, as long as the foreign definitions are
3148 available at runtime.
3149 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3150 supported. (thanks to Dan Debertin)
3151 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3152 just keywords. (thanks to Vincent Arkesteijn)
3153 * fixed bug #331: structure-class instances corresponding to
3154 DEFSTRUCT forms are now created eagerly.
3155 * fixed bug #345: backtraces from calls to undefined functions work
3156 on x86 as well. Related bug #61 is now also partially fixed on x86
3157 (backtraces from throws to unknown catch tags.)
3158 * bug fix: lambda-list parsing is now stricter vrt. order and number
3159 of lambda-list keywords.
3160 * bug fix: as specified by AMOP, an error is signalled if a
3161 class-option appears multiple times in a DEFCLASS form. (reported
3163 * bug fix: RANDOM can be compiled when the compiler derives the type
3164 of its numeric argument as a disjoint set of small integers.
3165 (reported by Paul Dietz)
3166 * bug fix: starting a core saved with shared objects loaded when
3167 those objects are not available no longer causes threaded SBCL to
3168 hang. (reported by Sean Ross)
3169 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3171 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3172 argument, which must always be NIL. (reported by Kalle Niemitalo)
3173 * bug fix: printing 1.0d+23 no longer results in an error.
3174 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3175 * bug fix: structure slot setters preserve evaluation order. (thanks
3177 * fixed some bugs related to Unicode integration:
3178 ** RUN-PROGRAM can allow its child to take input from a Lisp
3179 stream. (reported by Stefan Scholl)
3180 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3181 locales. (reported by Ken Causey)
3182 * fixed some bugs revealed by Paul Dietz' test suite:
3183 ** INCF, DECF and REMF evaluate their place form as specified in
3185 ** FORMATTER expands ~{ ~} iteration directives with V or #
3186 parameters correctly.
3187 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3188 consequent uses no arguments correctly.
3189 ** the system has a partial understanding of the (COMPLEX RATIO)
3191 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3194 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3195 * new feature: a build-time option (controlled by the :SB-UNICODE
3196 keyword feature, enabled by default) for building the system with
3197 support for the entire 21-bit character space defined by the
3199 * new feature: the system now has rudimentary external-format
3200 support; the primary user-visible change at this time is that
3201 characters with the high bit set (such as lower-case-e-acute) will
3202 print correctly to a terminal in a UTF-8 environment.
3203 * minor incompatible change: BASE-CHAR no longer names a class;
3204 however, CHARACTER continues to do so, as required by ANSI.
3205 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3206 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3207 has been moved to the SB-EXT package (temporarily re-exported from
3209 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3210 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3212 * fixed bug #351: better error-handlind and reporting for malformed
3214 * fixed bug #350: bignum-printing is now more memory-efficient,
3215 allowing printing of very large bignums, eg. (expt 2 10000000).
3216 (reported by Bruno Haible)
3217 * fixed bug #302: better primitive-type selection for intersection
3219 * fixed bug #308: non-graphic characters now all have names, as
3220 required. (reported by Bruno Haible)
3221 * bug fix: redefining a class with different superclasses now correctly
3222 removes it from the direct-subclasses of its previous superclasses.
3223 (reported by David Morse)
3224 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3225 new value now works. (reported by Bruno Haible)
3226 * bug fix: correct canonicalization of multiple non-standard slot
3227 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3228 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3229 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3230 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3231 now exists, an signals an error.
3232 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3233 during macroexpansion for non-iteration variables as well. (reported
3234 by Bruno Haible for CMUCL)
3235 * bug fix: Cyclic structures and unprintable objects in compiler
3236 messages no longer cause errors. (reported by Bruno Haible)
3237 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3238 and READ-FROM-STRING all now return a primary value of NIL if
3239 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3240 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3241 (reported by Bruno Haible for CMUCL)
3242 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3243 do not designate a condition. (reported by Bruno Haible for
3245 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3246 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3247 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3248 permitting resolution in favour of any of the conflicting symbols.
3249 (reported by Bruno Haible for CMUCL)
3250 * bug fix: EQUAL compiler optimizations is less aggressive on
3251 strings which can potentially compare true despite having distinct
3252 specialized array element types.
3253 * bug fix: unit enumerations can be defined without dividing by
3254 zero. (thanks to Vincent Arkesteijn)
3255 * FORMAT compile-time argument count checking has been enhanced.
3256 (report from Bruno Haible for CMUCL)
3257 * a partial workaround for the bug 262: the compiler does not try to
3258 inline-expand a local function doing RETURN-FROM from a deleted
3259 BLOCK. (thanks to Peter Denno for the bug report and to David
3260 Wragg for the simple test case)
3261 * fixed some bugs revealed by Paul Dietz' test suite:
3262 ** RENAME-PACKAGE allows all package designators as new package
3264 ** constraint propagation and lambda variable substitution are
3265 more cautious in dealing with partially deleted code.
3266 ** compiler sometimes lost reoptimization passes.
3267 ** CERROR, given a condition as condition designator, passes its
3268 remaining arguments to the continue format control without
3270 ** Case-altering FORMAT directives work correctly on non-ASCII
3272 ** The REAL type specifier handles bounds outside the floating
3273 point ranges without signalling FLOATING-POINT-OVERFLOW.
3274 ** Functions with IR1-transformations can create intercomponent
3275 references to global functions.
3276 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3278 ** FORMAT ~R treats a nil value for its first parameter correctly.
3280 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3281 * enhancement: saving cores with foreign code loaded is now
3282 supported on x86/NetBSD and sparc/Linux in addition to the previously
3283 supported platforms.
3284 * bug fix: on some platforms repeated installations caused multiple
3285 copies of HTML documentation to be installed -- should not happen
3286 any more. (reported by Stefan Scholl)
3287 * bug fix: parsing self-recursive alien record types multiple times
3288 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3289 original patch by Helmut Eller for CMUCL)
3290 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3291 (thanks to Richard Kreuter)
3292 * bug fix: defining classes whose accessors are methods on existing
3293 generic functions in other (locked) packages no longer signals
3294 bogus package lock violations. (reported by François-René Rideau)
3295 * bug fix: special variables as DEFMETHOD parameters no longer have
3296 associated bogus type declarations. (reported by David Wragg and
3298 * bug fix: read-write consistency on streams of element-type
3299 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3300 * bug fix: redefiniton of the only method of a generic function with
3301 no DEFGENERIC no longer emits a full WARNING. In addition,
3302 redefinition of generic functions with no DEFGENERIC to an
3303 incompatible lambda list now signals an error. (thanks to Zach
3305 * bug fix: DEFGENERIC now works even when there's a function of the
3306 same name in an enclosing lexical environment. (thanks to Zach
3308 * fixed compiler failure, caused by instrumenting code during
3309 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3310 * optimization: added loop analysis and improved register allocation
3311 * fixed some bugs revealed by Paul Dietz' test suite:
3312 ** POSITION on displaced vectors with non-zero displacement
3313 returns the right answer.
3314 ** (SIMPLE-STRING) is a valid type specifier for sequence
3316 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3318 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3319 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3321 ** The justification version of the FORMAT ~< directive treats
3322 non-zero minpad parameter correctly.
3324 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3325 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3326 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3327 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3328 the supported interface.
3329 * new feature: Single-stepping of code compiled with DEBUG 2 or
3330 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3331 * new feature: saving cores with foreign code loaded is now
3332 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3333 Timothy Moore's work for CMUCL)
3334 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3335 parameters to * instead of NIL if no initform is supplied.
3336 (reported by Johan Bockgaard)
3337 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3338 correctly when FUNCALL appears as the car of the form. Note:
3339 despite this FUNCALL forms are not currently subject to
3340 compiler-macro expansion. (port of Raymond Toy's fix for the
3341 same from CMUCL, reported by Johan Bockgaard)
3342 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3343 (thanks for Teemu Kalvas)
3344 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3345 case instead of terminating the iteration (thanks for Julian
3346 Squires, Sean Champ and Raymond Toy)
3347 * bug fix: incorrect expansion of defgeneric that caused a style
3348 warning. (thanks for Zach Beane)
3349 * bug fix: slot accessor effective method computation works properly
3350 for classes with multiple non-standard applicable methods on
3351 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3352 * on x86 compiler supports stack allocation of results of LIST and
3353 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3354 CMUCL implementation by Gerd Moellmann)
3355 * fixed some bugs revealed by Paul Dietz' test suite:
3356 ** FORMAT strings with both the ~<~:;~> form of the justification
3357 directive and pretty-printing directives cause an error.
3359 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3360 * incompatible change: the internal functions
3361 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3362 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3363 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3364 instead of the old functions.
3365 * new feature: on platforms where "dladdr" is available foreign
3366 function names now appear in backtraces. (based on Helmut Eller's
3368 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3369 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3371 * documentation: ASDF manual is now distributed with SBCL.
3372 * bug fix: SBCL can now load its contributed modules with REQUIRE
3373 even if the system-provided entries have been removed from
3374 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3376 * bug fix: backtraces involving undefined functions or assembly
3377 routines are more informative. (thanks to Brian Downing)
3378 * bug fix: mutually referent alien structures now work correctly.
3379 (reported by Rick Taube)
3380 * bug fix: structures defined by WITH-ALIEN can be referred to
3381 within other definitions in the same WITH-ALIEN.
3382 * bug fix: division operators (MOD, TRUNCATE and the like) with
3383 constant zero divisors and integer dividends no longer generate
3385 * bug fix: provide default methods for INPUT-STREAM-P and
3386 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3387 * bug fix: improve the detection and resolution of MOP metacycles
3388 (where effective method computation depends on the generic function
3389 having its effective method computed). (reported by Bruno Haible)
3390 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3391 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3392 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3393 * bug fix: pathnames with relative directory components can be
3394 represented relative to default pathnames.
3395 * optimization: in taking the GCD of bignums, reduce the two bignums
3396 to approximately the same size (using Euclid's algorithm) before
3397 applying the more sophisticated binary GCD. (thanks to Juho
3399 * optimization: COUNT on bitvectors now operates word-at-a-time.
3400 * optimization: ASH with a positive, but not necessarily constant,
3401 (leftwards) shift, when in a modular context, is compiled to a
3403 * fixed some bugs revealed by Paul Dietz' test suite:
3404 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3405 if the corresponding argument is NIL.
3406 ** FORMAT directives accepting a minpad parameter treat negative
3408 ** literal commas as character parameters to FORMAT directives are
3410 ** literal spaces directly after ~<Newline> directives within a
3411 format-logical-block (~:< ~@:>) do not induce :FILL-style
3412 conditional newlines.
3413 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3414 as specified: it no longer includes conditional newlines).
3415 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3417 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3418 :PER-LINE-PREFIX argument does not evaluate to a string.
3420 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3421 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3422 the manual for details; for now, package locks can be disabled by
3423 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3424 if no major problems are found then it is likely that they will be
3425 compiled in unconditionally.
3426 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3427 unsupported operators on all platforms. To load a shared library
3428 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3429 object file, link it into a shared library outside of SBCL and
3430 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3432 * bug workaround: ROOM T and the GC were not working together
3433 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3434 reporting facility aren't preserved. That reporting has been
3435 disabled, so now until and unless someone figures out how to make it
3436 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3437 * minor incompatible change: as threatened around sbcl-0.8.0, the
3438 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3439 The symbols are also exported from SB-PCL for backwards
3440 compatibility, but more so than before SB-PCL should be treated as
3441 an implementation-internal package.
3442 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3444 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3445 It is known as of this release not to work on the Alpha, however.
3446 * fixed bug #167: errors signalled due to illegal syntax in method
3447 bodies are now more legible.
3448 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3449 designators and can hence be used with TYPEP.
3450 * fixed bug #333: CHECK-TYPE now ensures that the type error
3451 signalled, if any, has the right object to be accessed by
3452 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3453 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3454 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3456 * fixed bug #334: programmatic addition of slots using specialized
3457 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3458 and :ALLOCATION :CLASS slots.
3459 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3460 float exponents. (rereported by Peter Seibel)
3461 * fixed a bug: #\Space (and other whitespace characters) are no
3462 longer considered to be macro characters in standard syntax by
3463 GET-MACRO-CHARACTER.
3464 * fixed bug: initialization of condition class metaobjects no longer
3465 causes an instance of the condition to be created. (reported by
3467 * fixed bug: it is now possible to have slots such that
3468 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3469 description is neither :INSTANCE nor :CLASS.
3470 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3471 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3472 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3473 non-standard SLOT-DEFINITION-ALLOCATION values.
3474 * fixed bugs: various race conditions handling exiting threads.
3475 CL-PPCRE's thread torture test now passes.
3476 * fixed arguably-a-bug: GC time proportional to number of threads in
3477 system even when most of them are idle
3478 * optimization: improved performance of BIT and SBIT on bit-vectors.
3479 * .fasl file incompatibility: The fasl file version number has
3480 been incremented because of changes associated with package locks.
3482 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3483 * minor incompatible change: the system no longer provides
3484 optimization hints (conditions which are TYPEP
3485 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3486 mode; these hints are still emitted when higher SPEED optimization
3488 * new contrib module: a sampling profiler (profiling by statistical
3489 sampling, rather than by instrumenting functions) is available as
3490 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3491 * the behaviour of the standard function ED is now customizeable by
3492 third parties through a hook variable: see ED's documentation
3493 string for information on the protocol.
3494 * the compiler no longer emits efficiency notes for (FUNCALL X)
3495 when the type of X is uncertain under default optimization
3497 * fixed bug 276: mutating a binding of a specialized parameter to a
3498 method to something that is not TYPEP the specializer is now
3500 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3501 exhibit the required behaviour on the x86 platform. (thanks to
3502 Peter van Eynde, Eric Marsden and Bruno Haible)
3503 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3504 even for difficult arguments. (reported by Peter Graves)
3505 * fixed bug 141a: the backquote printer now descends quoted
3507 * fixed another bug in backquote printing: no more destructive
3508 modification of the form's list structure. (reported by Brian
3510 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3511 move between its address being taken and the call to
3512 interrupt_thread, fixing a crashing race condition.
3513 * the SB-POSIX contrib implementation has been adjusted so that it
3514 no longer exhibits ridiculously poor performance when constructing
3515 instances corresponding to C structs.
3517 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3518 * minor incompatible change: the sb-grovel contrib now treats C
3519 structures as alien (in the sense of SB-ALIEN) objects rather than
3520 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3521 has implications for memory management of client code
3522 (sb-grovel-returned objects must now be manually managed) and for
3523 type safety (alien objects now have full types).
3524 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3525 used to control emission of compiler diagnostics, rather than the
3526 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3527 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3528 quality should be considered deprecated.
3529 * install.sh now installs the user manual as well
3530 * (not quite a new documentable feature, but worth considering in
3531 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3532 beginnings of a semantically meaningful condition hierarchy is
3533 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3535 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3536 designator as the defaults argument.
3537 * fixed bug: Displaced arrays whose displaced-to array has become
3538 too small now cause ARRAY-DIMENSION to signal an error, providing
3539 for safer bounds-checking. (reported by Bruno Haible)
3540 * fixed bug: DEFCLASS slot definitions with identical :READER and
3541 :WRITER names now signal a reasonable error. (reported by Thomas
3543 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3545 * fixed bug: Invalid slot specification errors now print correctly.
3546 (thanks to Zach Beane)
3547 * fixed bug 320: Shared to local slot value transfers in class
3548 redefinitions now happen corrently from superclasses as
3549 well. (reported by Bruno Haible)
3550 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3552 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3553 improper lists correctly. (reported by Bruno Haible)
3554 * fixed bug 313: source-transform for <fun-name> was erroneously
3555 applied to a call of a value of a variable with name <fun-name>.
3556 (reported by Antonio Menezes Leitao)
3557 * fixed bug 307: The obsolete instance protocol ensures that
3558 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3559 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3560 remove dead unknown-values globs from the middle of the stack.
3561 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3562 easier to resume long computations after using *BREAK-ON-SIGNALS*
3563 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3564 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3565 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3566 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3567 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3568 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3570 * fixed a (fairly theoretical) bug in string printing: if
3571 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3572 does not have array-element-type equal to the most general string
3574 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3575 function name. (thanks to Nikodemus Siivola)
3576 * fixed bug: compile-time format string checker failed on
3577 non-closed ~{. (reported by Thomas F Burdick)
3578 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3579 don't warn on legal loop code involving more than one aggregate
3580 boolean. (thanks to Nikodemus Siivola)
3581 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3582 in keyword position to MAKE-PACKAGE was not being reported as
3584 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3585 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3587 * fixed bugs 280 and 312: the checking for multiple definitions in a
3588 file is less likely to become confused by uses of inline
3590 * fixed bug: the #S reader macro performs the keyword coercion
3591 specified for slot names. (reported by Kalle Niemitalo)
3592 * fixed bug: lambda lists may contain symbols whose names start with
3593 & but are not lambda-list-keywords; their occurrence triggers a
3595 * fixed bug 321: define-method-combination argument lambda lists do
3596 not cause invalid code to be generated when &optional or &aux
3597 variables have default values. (reported by Bruno Haible)
3598 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3599 have CLOS classes; this appears also to have fixed reported
3600 instability in stack exhaustion detection.
3601 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3602 MUFFLE-WARNING when no associated restart is present is now
3604 * optimization: rearranged the expansion of various defining macros
3605 so that each expands into only one top-level form in a
3606 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3608 * optimization: used a previously little-used slot in symbols to
3609 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3611 * fixed some bugs revealed by Paul Dietz' test suite:
3612 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3614 ** Fixed an optimization bug related to inheritance of initforms
3615 from local to shared slots.
3616 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3617 ** CAST optimizer forgot to flush argument derived type.
3618 ** print/read consistency on floats is now orders of magnitude
3619 more likely. (thanks also to Bruno Haible for a similar report
3621 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3622 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3623 for objects of type REAL. Make it so.
3624 ** SXHASH is specified (infelicitously) to respect similarity,
3625 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3626 it so. (thanks to Markus Ziegler)
3627 ** on the Alpha, the compiler succeeds in compiling functions
3628 returning a known number of arguments greater than 63.
3629 ** fixed handling of invalid NIL arguments in keyword position
3631 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3633 ** provided a readably-printable representation for RANDOM-STATE
3635 ** ensured that pathnames, where they have a namestring, always
3636 print using #P"..." syntax.
3638 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3639 * Support for the forthcoming 2.0 version of the NetBSD kernel
3640 running on x86 hardware has been added. (thanks to Perry
3641 E. Metzger most immediately, and others for their past work)
3642 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3643 current release version; SBCL's OpenBSD support had been broken
3644 since about the time of OpenBSD's switch to ELF binary format.)
3645 * [placeholder for DX summary]
3646 ** user code with &REST lists declared dynamic-extent, under high
3647 speed or space and low safety and debug optimization policy.
3648 * The manual has been converted to Texinfo format and the debugger
3649 chapter from the cmucl manual has been added.
3650 * A facility has been added to extract documentation strings from
3651 sbcl and store them as Texinfo-formatted snippets for inclusion in
3652 the manual (via Texinfo's @include directive)
3653 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3654 the test case to Dave Roberts)
3655 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3656 pointers. (reported by Sean Ross)
3657 * bug fix: PROFILE output is printed nicely even for large numerical
3658 values. (thanks to Zach Beane)
3659 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3660 greater than 32 handle EOF correctly.
3661 * bug fix: on X86 an immediate argument of the IMUL instruction is
3662 correctly printed in disassembly. (thanks to Lutz Euler)
3663 * bug fix: class slots in redefined classes preserve their old
3664 values. (thanks to Bruno Haible and Nikodemus Siivola)
3665 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3666 succeeds. (reported by Marco Baringer)
3667 * fixed some bugs revealed by Paul Dietz' test suite:
3668 ** READ-SEQUENCE now works on ECHO-STREAMs.
3669 ** RATIONALIZE works more according to its specification. (thanks
3672 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3673 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3674 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3675 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3676 should matter to you only if you rebind the printer control
3677 variables and then find you want different bindings in the
3678 debugger than in the ordinary execution of your program.)
3679 * The runtime build system has been tweaked to support building
3680 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3681 assembler and linker. (thanks to Nikodemus Siivola)
3682 * Unbound, undefined, undeclared variables now trigger full
3683 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3684 more often programmer error than deliberate exploitation of undefined
3686 * optimization: the hash algorithm for strings has changed to one
3687 that is less vulnerable to spurious collisions. (thanks to Juho
3689 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3690 needless bounds checking. (thanks to Juho Snellman)
3691 * optimization: implemented multiplication as a modular
3692 (UNSIGNED-BYTE 32) operation on the PPC backend.
3693 * fixed some bugs revealed by Paul Dietz' test suite:
3694 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3696 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3697 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3698 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3700 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3702 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3704 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3705 their output stream on EOF from read.
3706 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3707 have been read to end-of-file.
3708 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3710 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3711 description of determination of which consecutive characters
3713 ** Printing the "Space" character with escaping on now yields "#\\ ",
3714 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3715 ** Reading floating-point numbers with *READ-BASE* set to a number
3716 less than 10 works correctly.
3717 ** Reading floating-point numbers with *READ-BASE* set to a number
3718 more than 10 works correctly.
3719 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3720 the readtable currently in effect.
3722 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3723 * minor incompatible change: parsing of namestrings on a physical
3724 (Unix) host has changed; numbers after the final #\. in a
3725 namestring are no longer interpreted as a version field. This is
3726 intented to be largely invisible to the user, except that the
3727 meaning of the namestring "*.*.*" has changed: it now refers to a
3728 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3729 should usually be replaced by
3730 (make-pathname :name :wild :type :wild :version :wild)
3731 with the added benefit that this is more likely to be portable.
3732 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3733 option to OPEN now signals an error if the file being opened
3734 exists; this may have an impact on existing code.
3735 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3736 signals received, on the PowerPC platforms (both Linux and
3737 Darwin). (thanks to Pierre Mai for pointing out the location of
3739 * several fixes on OS X: The system now builds and runs cleanly on
3740 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3741 (thanks to Brian Mastenbrook)
3742 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3743 second-resolution: integer multiples of 1/3600 between -24 and 24.
3744 (thanks to Vincent Arkesteijn)
3745 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3746 type when called with 1 argument; PEEK-CHAR checked type of
3747 PEEK-TYPE only after having read first character from a
3748 stream. (reported by Peter Graves)
3749 * bug fix: the garbage collector now has much better locality
3750 behaviour, and in particular no longer treats all memory as being
3751 exhausted when many small objects point to each other in a deeply
3753 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3754 recognized as being TYPEP their class.
3755 * bug fix: the PUSHNEW documentation string has been corrected.
3756 (thanks to Vincent Arkesteijn)
3757 * bug fix: defaulting of the value for the last of an atypically
3758 large number of multiple values being bound was not being
3759 performed correctly on the Alpha or PPC platforms
3760 * optimization: implemented multiplication as a modular
3761 (UNSIGNED-BYTE 32) operation on the x86 backend.
3762 * optimization: SEARCH on simple-base-strings can now be open-coded.
3763 (see also contrib/compiler-extras.lisp for inspiration for
3764 teaching the compiler about the Boyer-Moore algorithm).
3765 * value, returned by MAX (and MIN) called with several EQUALP, but
3766 not EQL, arguments now does not depend on compiler settings.
3767 * fixed some bugs revealed by Paul Dietz' test suite:
3768 ** in stack analysis liveness information is propagated from
3769 non-local entry points.
3770 ** pathwise CAST removing failed when the CAST node did not start
3772 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3773 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3775 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3776 host is already defined.
3777 ** RENAME-FILE works on streams instead of signalling an internal
3779 ** PEEK-CHAR uses the current readtable when determining whether
3780 or not a character is whitespace.
3781 ** MERGE-PATHNAMES handles the case when the pathname does not
3782 specify a name while the default-pathname specifies a version.
3783 ** Pathnames now stand a better chance of respecting print/read
3785 ** Attempting to use standardized file system operators with a
3786 pathname with invalid :DIRECTORY components signals a
3788 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3790 ** DIRECTORY on logical pathnames is more correct.
3791 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3792 signal a TYPE-ERROR if their argument is not a stream.
3793 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3794 designator argument does not designate a stream.
3795 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3796 examining the synonym.
3797 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3799 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3800 element-type larger than ([UN]SIGNED-BYTE 32).
3802 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3803 * When built with the :SB-FUTEX feature, threaded builds now take
3804 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3805 for faster/more reliable mutex and condition variable support.
3806 * Incompatible change (but one you probably shouldn't have been using
3807 anyway): the interface and code for arbitrating between multiple
3808 threads in the same user session has been redesigned.
3809 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3810 error when called without an explicit environment argument.
3811 (thanks to Nikodemus Siivola)
3812 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3813 confused about their position. (thanks to Adam Warner and Gerd
3815 * bug fix: Pretty printing backquoted forms with unquotations in the
3816 argument list position of various code constructs such as LAMBDA
3817 now works correctly. (reported by Paul Dietz)
3818 * bug fix: Pretty printing unquotations no longer loses all
3819 stream position information.
3820 * optimization: performance of string output streams is now less
3821 poor for multiple small sequence writes.
3822 * optimization: performance of CSUBTYPEP in the presence of complex
3823 expressions involving CONS and NOT many times has been improved.
3824 (reported by Paul Dietz)
3825 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3827 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3828 streams for the REPL, for the debugger, and so on. (thanks to
3830 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3831 * fixed some bugs revealed by Paul Dietz' test suite:
3832 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3833 is ignored if it is too small, rather than propagating through
3834 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3835 ** extremely complex negations of CONS types were not being
3836 sufficiently canonicalized, leading to inconsistencies in
3838 ** VALUES tranformer lost derived type.
3840 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3841 * fixed a bootstrapping bug: the build process no longer assumes
3842 that the various BOOLE-related constants have the same value in
3843 host and target lisps. (noted by Paul Dietz' test suite on an
3844 SBCL binary built from CLISP)
3845 * The system can now be dynamically linked on the MIPS platform,
3846 which enables dynamic loading of foreign code from Lisp. (thanks
3847 to Ralf Baechle for discussions on the MIPS ABI)
3848 * The system now records debugging information for its own source
3849 files in a filesystem-position-independent manner, relative to
3850 the "SYS" logical host.
3851 * fixed a compiler bug: MV-LET convertion did not check references
3852 to the "max args" entry point. (reported by Brian Downing)
3853 * tweaked disassembly notes to be less confident about proclaiming
3854 some instruction as an LRA. (thanks to Brian Downing)
3855 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3856 now each have their own history, command character, and other
3857 characteristics. (thanks to David Lichteblau)
3858 * fixed some bugs revealed by Paul Dietz' test suite:
3859 ** compiler failure in compiling LOGAND expressions including a
3861 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3862 shift greater than 32.
3863 ** FLUSH-DEST did not mark blocks for type check regeneration.
3864 ** HANDLER-CASE failed to accept declarations in handler clauses
3865 in some circumstances.
3867 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3868 * New code in contrib/sb-introspect (still probably not entirely
3869 stable yet) provides some support for smart Lisp development
3870 environments like SLIME.
3871 * The conditions signalled for errors occurring when loading .fasl
3872 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3873 in a way which should help ASDF recover gracefully.
3874 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3875 stuff has been cleaned up. If you code contrib/ stuff, this might
3876 affect you, and you can look at contrib/README, contrib/STANDARDS,
3877 and/or the 0.8.4.27 diff to check.
3878 * In full calls the compiler now does not generate checks for declared
3879 argument types for all arguments.
3880 * various threading fixes
3881 ** and some experimental patches which didn't make it into
3882 the main tree for this release, but which are shipped in
3883 contrib/experimental-thread.patch as a possible fix for some
3884 failures (deadlock, spinning...) in GC-intensive multithreaded
3886 * fixed PPC build problem (source code incompatibility of different
3887 library versions): added offsetof() hackery which attempts to divine
3888 where glibc maintainers put uc_mcontext today
3889 * fixed bug 282: compiler does not trust type assertions while passing
3890 arguments to a full call.
3891 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3892 &OPTIONAL VALUES type parameter.
3893 * fix bug 214: algorithm for noting rejected templates is now more
3894 similar to that of template seletion. (also reported by rydis on
3896 * fixed bug 141b: printing backquoted information readably and prettily
3897 inserts a space where necessary.
3898 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3899 (CHARACTER 10) are now reported as errors, rather than propagated
3900 as unknown types. (reported by piso on #lisp)
3901 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3902 with values NIL and :ERROR. (thanks to Milan Zamazal)
3903 * fixed bug 191c: CLOS now does proper keyword argument checking as
3904 described in CLHS 7.6.5 and 7.6.5.1.
3905 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3906 longer raise an error; further, using a list as a for-as-arithmetic
3907 counter now raises a meaningful error.
3908 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3909 now understood by sequence creation functions such as MAKE-SEQUENCE
3911 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3912 a STRING-INPUT-STREAM.
3913 * compiler enhancement: SIGNUM is now better able to derive the type
3915 * type declarations inside WITH-SLOTS are checked. (reported by
3917 * fixed some bugs revealed by Paul Dietz' test suite:
3918 ** incorrect optimization of TRUNCATE for a positive first
3919 argument and negative second.
3920 ** compiler failure in let-convertion during flushing dead code.
3921 ** compiler failure while deriving type of TRUNCATE on an
3922 interval, containing 0.
3923 ** ASH of a negative bignum by a negative bignum count now returns
3925 ** intersection of CONS types now canonicalizes properly, fixing
3926 inconsistencies in SUBTYPEP.
3928 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3929 * incompatible change: The --disable-debugger command line
3930 option now clobbers the debugger at a more fundamental
3931 level, by redefining #'INVOKE-DEBUGGER instead of by
3932 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3933 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3934 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3935 enter the debugger REPL and then suffer recursive errors
3936 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3937 while under the new system, BREAK in --disable-debugger mode
3938 terminates the system just as an unhandled error would.
3939 * fixed compiler performance when processing loops with a step >1;
3940 * bug fix: DOCUMENTATION now retrieves generic function
3941 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3942 support has been systematized, and now supports the methods
3943 specified by ANSI, along with a default method and a method for
3944 slot documentation. (reported by Nathan Froyd)
3945 * bug fix: effective methods associated with a generic function are
3946 no longer cached over a change of that generic function's method
3947 combination. (reported by Andreas Fuchs)
3948 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3949 names a non-existent directory. (thanks to Andreas Fuchs)
3950 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3951 the PPC platform, lead to stack corruption; this has been fixed.
3952 (reported by Rainer Joswig)
3953 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3954 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3955 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3956 arithmetic in general, is now much more reliable on the PPC
3958 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3959 platform now returns the right answer.
3960 * optimization: restored some effective method precomputation in
3961 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3962 precomputation is now tunable.
3963 * optimization: compiler-internal data structure use has been
3964 reviewed, and changes have been made that should improve the
3965 performance of the compiler by about 20%.
3966 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3967 simple-base-strings and simple-bit-vectors is improved.
3968 * optimization: the optimization of 32-bit logical and arithmetic
3969 functions introduced in version 0.8.3 on the x86 has been
3970 implemented on the mips, ppc and sparc platforms; an
3971 implementation of the same facility, but for 64-bit arithmetic,
3972 has been added for the alpha.
3973 * microoptimization: the compiler is better able to make use of the
3974 x86 LEA instruction for multiplication by constants.
3975 * bug fix: in some situations compiler did not report usage of
3976 generic arithmetic in (SPEED 3) policy.
3977 * bug 145b fix: compiler used wrong type specifier while converting
3978 MEMBER-types to numeric.
3979 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3981 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3982 index argument now works properly on the Alpha platform.
3983 * bug fix: floating point exception treatment on the Alpha platform
3985 * bug fix: FILE-POSITION works much better on string input and
3986 output streams. (thanks to Nikodemus Siivola)
3987 * bug fix: many threading/garbage collection symptoms sorted.
3988 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3989 might be pseudo-atomic.
3990 * internal change: Stopping for GC is now done with signals not
3991 ptrace. GC is now done in whichever thread wanted it, instead of
3993 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3995 * bug fix: result form in DO is not contained in the implicit
3997 * incompatible change: ICR structure is changed; the value part of
3998 CONTINUATION is now called LVAR; corresponding functions are
3999 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4000 * added type deriver for ISQRT (thanks to Robert E. Brown).
4001 * bug fix: better support for loading from the command line when an
4002 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4004 * fixed some bugs revealed by Paul Dietz' test suite:
4005 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4006 ** ROUND and FROUND now give the right answer when given very
4007 small float arguments.
4008 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4010 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4011 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4012 ** LCM should return a non-negative integer.
4013 ** PARSE-INTEGER returned the index of a terminator instead of the
4014 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4015 ** PARSE-INTEGER returned an incorrect index being applied to a
4017 ** LCM with two arguments of 0 returns 0 rather than signalling
4019 ** unsigned addition of a 32-bit constant with the high bit set no
4020 longer causes an internal compiler error on the x86.
4021 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4022 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4023 with negative last argument.
4024 ** byte specifiers with zero size and position no longer cause
4025 an error during type derivation.
4026 ** bignum multiplication on the Alpha platform now returns the
4028 * porting: The system now builds on SuSE AMD64, although it still
4029 generates a 32-bit binary.
4030 * .fasl file incompatibility: The fasl file version number has
4031 been incremented (because of the changes to internal compiler
4032 data structures referred to above).
4034 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4035 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4036 more accurately, on the Darwin kernel running on PowerPC hardware.
4037 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4038 * Compiler code deletion notes now signal a condition of type
4039 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4040 an associated MUFFLE-WARNING restart.
4041 * The compiler now performs limited argument count validation of
4042 constant format strings in FORMAT, and where appropriate in ERROR,
4043 CERROR and WARN. (thanks to Gerd Moellmann)
4044 * New ASDF-INSTALL contrib can be used for automatic download and
4045 installation of third-party Lisp code from CCLAN or other sites
4047 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4048 which forces another thread to execute a function supplied by the
4050 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4051 now accept and act upon their :ELEMENT-TYPE keyword argument.
4052 (reported by Martin Atzmueller, Edi Weitz)
4053 * bug fix: FILE-POSITION now accepts position designators up to
4054 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4055 is the greater. (thanks to Patrik Nordebo)
4056 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4057 Kalle Olavi Niemitalo)
4058 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4059 printable. (reported by Eric Marsden)
4060 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4061 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4062 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4063 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4064 (thanks to Stig Sandoe)
4065 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4066 UNREAD-CHAR now correctly includes the unread character in the
4067 target sequence. (thanks to Gerd Moellmann)
4068 * bug fix in threaded builds: the system can now be suspended and
4069 resumed by shell job control with minimal disruption.
4070 * bug fixes in times and timezones >2038AD
4071 * better handling of "where is GNU make?" problem in build scripts
4072 (thanks to Nikodemus Siivola)
4073 * new optimization: inside a named function any reference to a
4074 function with the same name is considered to be a self-reference;
4075 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4076 optimization quality.
4077 * new optimization on x86: logical functions and + now have
4078 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4079 used when the result is truncated to 32 bits.
4080 * VALUES declaration is partially enabled.
4081 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4082 * fixed some bugs revealed by Paul Dietz' test suite:
4083 ** The system now obeys the constraint imposed by
4084 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4085 types form a lattice under type intersection.
4086 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4087 ** ASSOC now ignores NIL elements in an alist.
4088 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4089 and (1+ MOST-POSITIVE-FIXNUM) answers.
4090 ** The addition of a method with invalid qualifiers to a generic
4091 function does not cause an error to be signalled immediately;
4092 a warning is signalled, and the error is generated only on
4093 calling the generic function.
4094 * changed .fasl file version number, in part to add type codes for
4095 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4096 obscure ANSI requirements
4098 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4099 * fixed bug 148: failure to inline-expand a local function left
4100 garbage, confusing the compiler.
4101 * fixed bugs 3cd: structure slot readers perform type check if the
4102 slot can have an invalid value (i.e. it is either not initialized
4103 or can be written with a less specific slot writer).
4104 * bug fix: the compiler now traps array references to elements off
4105 the end of an array; previously, the bounds checking in some
4106 circumstances could go off-by-one.
4107 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4109 * type declarations for array element types now obey the description
4110 on the CLHS page "Declaration TYPE", as per discussions on
4111 sbcl-help around 2003-05-08. This means that a declaration
4112 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4113 declaration, all references to BAR will be asserted or assumed
4114 (with THE, so dependent on compiler policy) to involve objects of
4115 type FOO. Note that no such declaration is implied in
4116 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4117 * declared types of functions from the "Conditions"
4118 chapter. (reported by Paul Dietz)
4119 * bug fix: CERROR accepts a function as its first argument.
4120 * bug fix: NTH an NTHCDR accept a bignum as index
4121 arguments. (reported by Adam Warner)
4122 * optimization: character compare routines now optimize comparing
4123 against a constant character. (reported by Gilbert Baumann)
4124 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4125 argument now works properly on the MIPS platform.
4126 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4127 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4128 declared to have a functional type, does not cause an error
4130 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4131 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4132 * fixed bug: if last continuation of a deleted block has a
4133 destination, this destination should be deleted too. (reported by
4135 * fixed a bug in the bootstrap process: the host compiler's values
4136 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4137 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4138 test case from Patrik Nordebo)
4139 * improved the ability of the disassembler on the PPC platform to
4140 provide helpful disassembly notes.
4141 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4142 the class in more cases than previously.
4143 * bug fix: FILE-POSITION now understands :START and :END for
4144 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4145 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4146 8) data. (thanks to David Lichteblau)
4147 * bug fix: it is possible to add a method to a generic function
4148 without lambda list.
4149 * bug fix: reader failed to signal END-OF-FILE inside an
4150 object representation. (reported by Nikodemus Siivola)
4151 * fixed some bugs revealed by Paul Dietz' test suite:
4152 ** LAST and [N]BUTLAST should accept a bignum.
4153 ** condition slot accessors are methods.
4154 ** (VECTOR NIL) is a subtype of STRING.
4156 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4157 * minor incompatible change: some nonsensical specialized lambda
4158 lists (used in DEFMETHOD) which were previously ignored now signal
4160 * minor incompatible change: the system is now aware of the types of
4161 variables in the COMMON-LISP package, and will signal errors for
4162 most violations of these type constraints (where previously they
4163 were silently accepted).
4164 * minor incompatible change: COMPILE-FILE now uses the freedom
4165 afforded (ANSI 3.2.2.3) to use derived function types for
4166 functions defined in the same file. This also permits the system
4167 to warn on static type mismatches and function
4168 redefinition. (Currently it does not work with high DEBUG level.)
4169 * minor incompatible change: VALUES declaration is disabled.
4170 * When issuing notes, the compiler now signals a condition of type
4171 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4172 restart for use in user handlers. It is expected that the
4173 COMPILER-NOTE condition will eventually become a condition
4174 supertype to a hierarchy of note types, which will then be
4175 handleable in a similar fashion. However, at the moment, no such
4176 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4177 but it's an implementation detail, not a classification for the
4179 * Changes in type checking closed the following bugs:
4180 ** type checking of unused values (192b, 194d, 203);
4181 ** template selection based on unsafe type assertions (192c, 236);
4182 ** type checking in branches (194bc).
4183 * A short form of VALUES type specifier has ANSI meaning (it has
4184 increased the number of situations when SBCL cannot perform type
4186 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4187 keywords or constants is permissible.
4188 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4189 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4190 classes. (thanks to Antonio Martinez)
4191 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4192 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4193 argument to a pretty-print stream. Instead, it leaves any such
4194 operations to DESCRIBE-OBJECT methods.
4195 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4197 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4198 lambda lists. (thanks to David Lichteblau)
4199 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4200 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4201 (thanks to Gerd Moellmann)
4202 * fixed bug 246: increased compilation speed of long
4203 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4205 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4207 * DEFCONSTANT now throws a condition of type
4208 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4209 constant to a non-EQL value; CONTINUE and ABORT restarts
4210 respectively change and preserve the value.
4211 * fixed bug 63: The code walker, part of the implementation of CLOS,
4212 is now better at handling symbol macros.
4213 * bug fix: There is no longer an internal implementation type named
4214 CL:LENGTH. (reported by Raymond Toy)
4215 * bug fix: In macro-like defining macros/special operators the
4216 implicit block does not enclose the lambda list.
4217 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4218 enclosed in parentheses) are not suitable as type specifiers, and
4219 their use properly signals an error now.
4220 * bug fix: An argument count mismatch for a type specifier in code
4221 being compiled no longer causes an unhandled error at compile
4222 time, but signals a compile-time warning.
4223 * fixed simple vector readable printing
4224 * bug fix: DESCRIBE takes more care over whether the class
4225 precedence list slot of a class is bound before accessing it.
4226 (reported by Markus Krummenacker)
4227 * bug fix: FORMATTER can successfully compile pretty-printer format
4228 strings which use variants of the ~* directive inside.
4229 * bug fix: SEARCH now applies its TEST predicate to the elements of
4230 the arguments in the correct order. (thanks to Wolfhard Buss)
4231 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4232 in type inference. (thanks to Robert E. Brown)
4233 * bug fix: Reading in symbols with an explicit package name of ""
4234 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4235 * fixed some bugs revealed by Paul Dietz' test suite:
4236 ** NIL is now allowed as a structure slot name.
4237 ** Arbitrary numbers, not just REALs, are allowed in certain
4238 circumstances in LOOP for-as-arithmetic clauses.
4239 ** Multiple class redefinitions before slot access no longer
4240 causes a type error.
4241 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4242 association between the name and a class.
4243 ** Generic functions with non-standard method-combination and over
4244 five methods all of which return constants no longer return NIL
4245 after the first few invocations. (thanks to Gerd Moellmann)
4246 ** CALL-NEXT-METHOD with no arguments now passes the original
4247 values of the arguments, even in the presence of assignment.
4248 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4250 ** DISASSEMBLE works with closures and funcallable instances.
4251 ** ADD-METHOD now returns the generic function, not the new method.
4252 ** FIND-METHOD signals an error if the lengths of the specializers
4253 is incompatible with the generic function, even if the ERRORP
4255 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4256 which its argument is a member.
4257 ** DEFCLASS only redefines the class named by its class-name
4258 argument if that name is the proper name of the class;
4259 otherwise, it creates a new class.
4260 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4261 of the UNBOUND-SLOT condition to the name of the slot.
4262 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4263 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4264 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4265 SLOT-MAKUNBOUND in the specified fashion.
4267 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4268 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4269 cross-compilation host. As a consequence, we can now bootstrap our
4270 way up to SBCL starting with a bare gcc toolchain and human-readable
4271 source code (first the source to CLISP, then the source to SBCL).
4272 * A contributed module containing a partial implementation of the
4273 simple-streams interface has been included. (thanks to Rudi
4275 * A contributed module implementing the RFC1321 Message Digest
4276 Algorithm, known as MD5, has been included.
4277 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4278 no longer has any effect, as the code controlled by this feature
4279 has been deleted. (As far as we know, no-one has ever built using
4280 this feature, and its semantics were confused in any case).
4281 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4282 work on conditions (as required by the ANSI specification),
4283 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4284 expected behaviour on conditions. Users should note, however,
4285 that such behaviour is not required by the ANSI specification,
4286 and so use of this behaviour may render their code unportable.
4287 * fixed some bugs revealed by Paul Dietz' test suite:
4288 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4290 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4291 ** SXHASH on condition objects no longer returns NIL.
4292 ** :ALLOCATION :CLASS slots are better treated; their values are
4293 updated on class redefinition, and initforms inherited from
4294 superclasses are applied.
4295 ** REMOVE-METHOD returns its generic function argument even when
4296 no method was removed.
4297 ** SHARED-INITIALIZE now initializes the values of the requested
4298 slots, including those with :ALLOCATION :CLASS.
4299 ** ALLOCATE-INSTANCE now works on structure classes defined via
4300 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4302 ** SLOT-EXISTS-P now works on conditions, as well as structures
4304 ** MAKE-LOAD-FORM now has the required methods on
4305 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4306 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4307 keyword, and now implements the SLOT-NAMES argument.
4308 ** methods with &OPTIONAL arguments no longer allow too many
4309 arguments to be passed in the call without error.
4310 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4311 option is consistent with the required arguments of the generic
4312 function lambda list.
4313 * bug fix: REQUIRE accepts a string designator. (Thanks to
4315 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4316 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4317 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4318 * bug fix: The compiler now checks for duplicated variables in macro
4320 * bug fix: SETQ on globals returns the correct value.
4321 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4322 not a COMPILER-ERROR (followed by some other strange error on
4323 choosing the CONTINUE restart).
4324 * bug fix: make.sh and friends are now more consistent in the way that
4325 they look for GNU "make".
4327 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4328 * experimental native threads support (on x86 Linux >=2.4 only).
4329 This is not compiled in by default: you need to add :SB-THREAD to
4330 the target features. See the "Beyond ANSI" chapter of the manual
4332 * fix for longstanding nonANSIism: The old distinction between
4333 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4334 The return value from CL:FIND-CLASS is now a CLOS class, and
4335 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4336 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4337 * An interface to the MetaObject Protocol, as described in Kiczales,
4338 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4339 MIT Press, 1991, is available from the SB-MOP package.
4340 * incompatible change: the SB-PCL package should now be considered
4341 a private implementation detail, and no longer a semi-private MOP
4343 * minor incompatible change: due to rearrangement for threads, the
4344 control stack and binding stack are now allocated at arbitrary
4345 addresses instead of being hardcoded per-port. Users affected by
4346 this probably have to be doing advanced things with shared
4347 libraries, and will know who they are.
4348 * minor incompatible change: Previously, all --eval forms used were
4349 processed with READ before any of them were processed with EVAL.
4350 Now each --eval form is processed with both READ and EVAL before
4351 the next --eval form is processed. (Thus package operations like
4352 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4353 work as the user might reasonably expect.)
4354 * minor incompatible change: *STANDARD-INPUT* is now only an
4355 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4357 * minor incompatible change: Y-OR-N-P is now character-oriented,
4358 not line oriented. Also, YES-OR-NO-P now works without errors.
4359 (thanks to Antonio Martinez)
4360 * sb-aclrepl module improvements: an integrated inspector, added
4361 repl features, and a bug fix to :trace command.
4362 * Known functions, which cannot be open coded by the backend, are
4363 considered to be able to check types of their arguments. (fixing
4364 a bug report by Nathan J. Froyd)
4365 * fixed a bug in computing method discriminating functions: It is
4366 now possible to define methods specialized on classes which have
4367 forward-referenced superclasses. (thanks to Gerd Moellmann)
4368 * fixed evaluation order in optional entries (reported by Gilbert
4370 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4371 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4372 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4373 required-by-AMOP NAME argument, as well as CLASS and
4374 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4375 * fixed bug 20: DEFMETHOD can define methods using names that are
4376 not the proper names of classes to designate class specializers.
4377 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4378 Unix file descriptors, instead of blowing up. (thanks to Antonio
4380 * Garbage collection refactoring: user-visible change is that a
4381 call to the GC function during WITHOUT-GCING will not do garbage
4382 collection until the end of the WITHOUT-GCING. If you were doing
4383 this you were probably losing anyway.
4384 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4385 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4386 TYPEP the latter but not the former.
4387 * The compiler issues a full WARNING for calls to undefined functions
4388 with names from the CL package.
4389 * MAP-INTO for a vector destination is open coded. (reported by
4390 Brian Downing on c.l.l)
4391 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4392 documentation string.
4393 * fixed some bugs revealed by Paul Dietz' test suite:
4394 ** COPY-ALIST now signals an error if its argument is a dotted
4396 ** Condition slots are now accessed more correctly in the presence
4397 of multiple initargs for a given slot.
4398 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4399 exclude restarts of the same name associated with a different
4401 ** DEFCLASS of forward-referenced classes with another
4402 forward-referenced class in the superclasses list no longer
4404 ** Condition slots are now initialized once each, not multiple
4405 times. (thanks to Gerd Moellmann)
4406 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4408 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4409 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4410 arguments contain duplicated elements.
4411 ** RESTART-CASE understands local macros.
4412 ** RESTART-CASE associates exactly its own restarts with a condition.
4413 ** ENDP in safe mode checks its argument to be of type LIST.
4414 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4415 in question is unbound.
4416 ** Optimized MAKE-INSTANCE functions no longer cause internal
4417 assertion failures in the presence of duplicate initargs.
4418 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4419 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4420 propagated even in the ctor optimized implementation of
4422 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4424 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4425 * a better implementation of SXHASH on (simple) bit vectors,
4426 measured both in execution speed and in distribution of results
4427 over the positive fixnums, has been installed. Likewise, a better
4428 implementation of EQUAL for simple bit vectors is now available.
4429 * fixed CEILING optimization for a divisor of form 2^k.
4430 * fixed bug 240 (emitting extra style warnings "using the lexical
4431 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4432 by Antonio Martinez)
4433 * fixed SXHASH, giving different results for NIL depending on type
4434 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4435 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4436 variable. (found by Rolf Wester)
4437 * SBCL does not ignore type declarations for special
4438 variables. (reported by rif on c.l.l 2003-03-05)
4439 * some bug fixes in contrib/sb-aclrepl/
4440 * fixed some bugs revealed by Paul Dietz' test suite:
4441 ** a bug in the CONS type specifier, whereby the CAR and CDR
4442 types got intertwined, has been fixed;
4443 ** the type system is now able to reason about the interaction
4444 between INTEGER and RATIO types more completely;
4445 ** APPEND, [N]REVERSE and NRECONC check that those their
4446 arguments, which must be proper lists, are really so;
4447 ** An array specialized to be unable to hold elements has been
4448 implemented, as required -- yes, really -- by ANSI;
4449 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4450 on malformed property lists;
4452 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4453 * incompatible packaging change: in line with Unix convention,
4454 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4455 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4456 * REQUIRE and PROVIDE are now optionally capable of doing something
4457 useful. See the documentation string for REQUIRE.
4458 * infrastructure for a managed SBCL contrib system: contributed
4459 modules in this release include:
4460 ** the ASDF system definition facility;
4461 ** an interface to the BSD Sockets API;
4462 ** an ACL-like convenience interface to the repl;
4463 (thanks to Kevin Rosenberg)
4464 ** an implementation of ROTATE-BYTE, with efficient implementation
4466 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4467 gives a closer approximation to the right answer than previously.
4468 (thanks to Raymond Toy)
4469 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4470 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4471 optional environment arguments, as required by ANSI.
4472 * fixed bugs in other functions taking environment objects, allowing
4473 calls with an explicit NIL environment argument to be compiled
4475 * fixed bug 228: primary return values from
4476 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4477 COMPILE or FUNCTION.
4478 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4479 :TYPE will no longer signal errors on innocuous objects.
4480 * fixed bug 231b: SETQ is better at respecting type declarations in
4481 the lexical environment.
4482 * fixed a bug in DEFCLASS: classes named by symbols with no or
4483 unprintable packages can now be defined.
4484 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4485 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4486 * fixed compiler failure related to checking types of functions.
4487 (reported by Robert E. Brown)
4488 * the compiler is now much more consistent in its error-checking
4489 treatment of bounding index arguments to sequence functions: in
4490 (SAFETY 3) code, errors will be signalled in almost all cases if
4491 invalid sequence bounding indices are passed to functions defined
4492 by ANSI to operate on sequences.
4493 * fixed a bug in the build procedure: documentation of SBCL-specific
4494 packages is now preserved and available in the final Lisp image.
4495 * lifted FDEFINITION lookup out of loops in the implementation of
4496 many list operations. (thanks to Robert E. Brown)
4497 * fixed a bug in the reader: the #n# reader macro now works for
4498 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4499 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4500 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4501 E. Brown and Tony Martinez respectively)
4502 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4503 SLOT-BOUNDP: in particular, it is now able to optimize them much
4504 better, and is now not vulnerable to having packages renamed.
4505 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4506 always called when a slot is not present in an instance. (thanks
4508 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4509 longer signal an error on unreading a character following EOF on
4510 the previous constituent stream. (thanks to Tony Martinez)
4511 * fixed some bugs revealed by Paul Dietz' test suite:
4512 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4513 not just nonnegative fixnums;
4514 ** the logical bit-array operators such as BIT-AND now accept an
4515 explicit NIL for their "opt-arg" argument (to indicate a
4516 freshly-consed result bit-array);
4517 ** ELT now signals an error on an invalid sequence index in safe
4519 ** the type system is now cleverer about negations of numeric
4520 types, and consequently understands the BIGNUM and RATIO types
4522 ** the type system is now cleverer about the interaction between
4523 INTEGER and RATIO types: while bugs still remain, many more
4524 cases are accurately computed;
4525 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4526 if it is in the last clause;
4527 ** CONSTANTLY now correctly returns a side-effect-free function in
4529 ** DECLARE is no longer treated as a special-operator; in
4530 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4531 * incremented fasl file version number due to the change in the
4532 DEFSTRUCT-SLOT-DESCRIPTION structure.
4534 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4535 * minor incompatible change: code processed by the "interpreter" or
4536 EVAL now has a compilation optimization policy of (DEBUG 2)
4537 (changed from (DEBUG 1)) to improve debuggability of interactive
4538 development, and to allow the use of the debug RETURN command in
4540 * an experimental implementation of the RETURN command for the
4541 debugger has been included. (thanks to Frederik Kuivinen)
4542 * fixed bug 62: constraints were not propagated into a loop.
4543 * fixed bug in embedded calls of SORT (reported and investigated by
4545 * fixed some bugs revealed by Paul Dietz' test suite:
4546 ** printing and reading of arrays with some dimensions having
4547 length 0 (thanks to Gerd Moellmann);
4548 ** BOA constructor with &AUX argument without a default value does
4549 not cause a type error;
4550 ** CONSTANTP now returns true for all self-evaluating objects.
4552 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4553 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4554 accessors that are related by inheritance, as specified in the
4555 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4556 Valtteri Vuorikoski)
4557 * The compiler is now able to inline functions that were defined in
4558 a complex lexical environment (e.g. inside a MACROLET).
4559 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4561 * Support for the upcoming FreeBSD-5.0 release has been included.
4562 (thanks to Dag-Erling Smorgrav)
4563 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4564 effect when it is not in a toplevel context.
4565 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4566 stand a better chance of being correct. (thanks to Gerd
4568 * fixed bug in COERCE, which now signals an error on coercing a
4569 rational to a bounded real type which excludes the expected
4571 * The compiler is now able to derive types more accurately from the
4572 COERCE and COMPILE functions.
4573 * fixed bug 223: functional binding is considered to be constant
4574 only for symbols in the CL package.
4575 * fixed bug 231: SETQ did not check the type of a variable being set
4576 (reported by Robert E. Brown)
4577 * A new optimization for MAKE-INSTANCE has been included, fixing
4578 various bugs (including relating to :ALLOCATION :CLASS slots and
4579 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4581 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4582 ** As required by ANSI, LOOP now disallows anonymous collection
4583 clauses such as COLLECT I in conjunction with aggregate boolean
4584 clauses such as THEREIS (= I 1);
4585 ** LOOP now signals an error when any variable is reused in the
4586 same loop (including the potentially useful construct analogous
4587 to WITH A = 1 WITH A = (1+ A);
4588 ** IT is only a special loop symbol within the first clause of a
4589 conditional loop clause;
4590 ** LOOP with a typed iteration variable over a hashtable now
4591 signals a type error iff it should.
4592 * fixed some other bugs revealed by Paul Dietz' test suite:
4593 ** FILE-STREAM now names the class previously known as FD-STREAM;
4594 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4595 argument) no longer signals an error;
4596 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4597 of the slot symbol, rather than using the current package
4598 ((:CONC-NAME "") continues to intern the slot's name in the
4600 * incremented fasl file version number, because of the incompatible
4601 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4602 of the new implementation of DEFINE-COMPILER-MACRO.
4604 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4605 * Support for building SBCL for MIPS platforms running in
4606 little-endian mode has now been checked in, and basic
4607 functionality on said platforms verified.
4608 * minor incompatible change: PCL now records the pathname of a file
4609 in which methods and the like are defined, rather than its
4611 * minor incompatible change: TRUENAME now considers the truename of
4612 a file naming a directory to be the pathname with :DIRECTORY
4613 component indicating that directory.
4614 * minor incompatible change: a NAMED clause in the extended form of
4615 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4616 reason for the previous behaviour is unclear.
4617 * more systematization and improvement of CLOS and MOP conformance
4618 in PCL (thanks to Gerd Moellman and Pierre Mai):
4619 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4621 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4622 primary methods with no specializers;
4623 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4625 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4626 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4627 FORWARD-REFERENCED-CLASSes; error reporting on
4628 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4630 ** SXHASH on CLOS instances now uses a slot internal to the
4631 instance to return different numbers on distinct instances,
4632 while preserving the same return value through invocations of
4634 ** DEFMETHOD signals errors when methods with longer incongruent
4635 lambda lists are added to generic functions;
4636 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4637 CLASS, as specified in AMOP;
4638 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4639 on the order returned by the primary method for classes of
4640 class STANDARD-CLASS;
4641 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4642 * fixed some bugs shown by Paul Dietz' test suite:
4643 ** DOLIST puts its body in TAGBODY;
4644 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4646 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4647 value producing form;
4648 ** if more variables are given to PROGV than values, extra
4649 variables are bound and made to have no value;
4650 ** NSUBSTITUTE on list arguments gets the right answer with
4652 ** ELT signals an error of type TYPE-ERROR when the index argument
4653 is not a valid sequence index;
4654 ** LOOP signals (at macroexpansion time) an error of type
4655 PROGRAM-ERROR when duplicate variable names are found;
4656 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4657 ** FUNCALL of special-operators now cause an error of type
4659 ** PSETQ now works as required in the presence of side-effecting
4660 symbol-macro places;
4661 ** NCONC accepts any object as its last argument;
4662 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4664 ** loop-for-as-package does not require a package to be explicitely
4666 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4668 * fixed bug 166: compiler preserves "there is a way to go"
4669 invariant when deleting code.
4670 * fixed bug 172: macro lambda lists with required arguments after
4671 &REST arguments now cause an error to be signalled. (thanks to
4673 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4674 bug. (thanks to Matthew Danish)
4675 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4677 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4678 arguments are lexically rebound. (thanks to Gerd Moellmann and
4680 * fixed bug 194: error messages are now more informative when there
4681 is no primary method applicable in a call to a generic
4682 function. (thanks to Gerd Moellmann)
4683 * fixed bug in command line argument checking (thanks to Julian
4685 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4686 (thanks to Matthew Danish)
4687 * incremented fasl file version number, because of the
4688 SXHASH-related changes in the layout of CLOS data structures
4690 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4691 * minor incompatible change: The runtime (the Unix executable named
4692 "sbcl") is now much pickier about the .core files it will load.
4693 Essentially it now requires .core files to descend from the same
4694 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4695 as the runtime does. (The intent is to prevent the crashes which
4696 can occur, and which can even be reported as mysterious failures,
4697 when people patch the sources or change the build parameters
4698 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4699 sbcl and .core files.)
4700 * fixed bug: VALUES-LIST is no longer optimized away.
4701 * fixed bug 142: The FFI conversion of C string values to Lisp
4702 string values no longer conses excessively. (thanks to Nathan
4703 Froyd porting Raymond Toy's fix to CMU CL)
4704 * began to systematize and improve MOP conformance in PCL (thanks to
4705 Nathan Froyd, Gerd Moellman and Pierre Mai):
4706 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4708 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4709 ** FINALIZE-INHERITANCE is now called on class finalization;
4710 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4711 argument precedence order.
4712 * fixed bug 202: The compiler no longer fails on functions whose
4713 derived types contradict their declared type.
4714 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4715 so it can be non-toplevel.
4716 * The fasl file version number has changed (because of the new
4717 implementation of DEFMACRO).
4718 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4719 safe code, that any length requirement by their type-specifier
4720 argument is valid. The exceptions to this are described in bug
4722 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4723 functions now check the types of their inputs as required by ANSI.
4724 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4725 introduced symbol is DECLAREd to be SPECIAL.
4726 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4727 * fixed bug: :COUNT argument to sequence functions may be negative
4728 * fixed bug: body of DO-SYMBOLS may contain declarations
4729 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4730 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4731 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4732 symbol macro only once
4733 * fixed printing of call frame when argument list is unavailable
4734 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4735 * compiler no longer signals WARNING on unknown keyword
4738 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4739 * A beta-quality port to the mips architecture running Linux,
4740 based on the old CMUCL backend, has been made. It has been tested
4741 on a big-endian kernel, and works sufficiently well to be able to
4742 rebuild itself; it has not been tested in little-endian mode.
4743 * fixed an inconsistency between gencgc.c and purify.c which made
4744 dumping/loading .core files unreliable
4745 * fixed bug 120a: The compiler now deals correctly with IFs where
4746 the consequent is the same as the alternative, instead of
4747 misderiving the return type. (thanks to Alexey Dejneka)
4748 * fixed bug 113: Logical pathnames are now dumpable (the logical
4749 host is resolved at load-time, throwing an error if it is not
4751 * fixed bug 174: FORMAT's error message is slightly clearer when a
4752 non-printing character is used in a format directive.
4753 * fixed several bugs in compiler checking of type declarations, i.e.
4754 violations of the Python "declarations are assertions" principle
4755 (thanks to Alexey Dejneka)
4756 * fixed several bugs in PCL's error checking (thanks to Gerd
4758 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4760 * fixed bug in compilation of functions as first class values
4761 (thanks to Antonio Martinez-Shotton)
4762 * The compiler's handling TYPE-ERRORs which it can prove will
4763 inevitably happen at runtime has been cleaned up and corrected
4764 in several ways. (thanks to Alexey Dejneka)
4765 * improved argument type checking for various basic arithmetic
4766 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4767 lavished on them in the past that they can be compiled in many
4768 ways in different special cases
4769 * fixed bug 181: compiler checks validity of user supplied type
4771 * cleaned up code flushing in optimization: Function calls which
4772 should signal errors for safety purposes (e.g. which ANSI says
4773 should signal errors when their arguments are of incorrect type)
4774 are no longer optimized away.
4775 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4776 * incremented fasl file version number, because changes in the
4777 implementation of sequence functions like COERCE caused
4778 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4779 in old inline expansions) to become undefined. (Actually these
4780 changes were later undone, so we might very well be binary
4781 compatible with 0.7.7 after all, but leaving the version number
4782 incremented seemed like the simplest and most conservative
4785 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4786 * An alpha-quality port to the parisc architecture running Linux,
4787 based on the old CMUCL backend, has been made. This, even more so
4788 than the other backends, should be considered still a work in
4789 progress; known problems include that the Linux kernel in 64-bit
4790 mode does not propagate the correct sigcontext structure to
4791 userspace, and consequently SBCL on a parisc64 kernel will not
4793 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4794 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4795 suppressed.) Also now that the compiler is looking at declarations
4796 in the environment, it checks optimization declarations as well,
4797 and suppresses inlining when (> DEBUG SPEED).
4798 * More fixes have been made to treatment of floating point exception
4799 treatment and other Unix signals. In particular, floating point
4800 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4801 * The detection and handling of control stack exhaustion (infinite
4802 or very deeply nested recursion) has changed. Stack exhaustion
4803 detection is now done by write-protecting pages at the OS level
4804 and applies at all optimization settings; when found, a
4805 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4806 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4807 be caught using IGNORE-ERRORS.
4808 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4809 correctly when transforming recursive LABELS functions to LETs.
4810 (thanks to Alexey Dejneka)
4811 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4812 that are names of constants or global variables.
4813 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4814 alien routines with docstrings.
4815 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4816 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4818 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4819 (thanks to Eric Marsden)
4820 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4821 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4822 * Bug fix: The SPARC backend can now compile functions involving
4823 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4824 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4825 to a functions expecting a PATHNAME-DESIGNATOR.
4826 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4827 lambda lists. (thanks to Alexey Dejneka)
4828 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4829 functions so that EXPORTing the name of the class doesn't cause
4830 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4831 to Antonio Martinez for reporting this)
4832 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4833 constant-folded without failing an assertion. (thanks to Einar
4834 Floystad Dorum for reporting this)
4835 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4836 types are now dealt with more correctly by the compiler.
4837 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4838 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4839 behaviour analogous to RENAME-FILE. This puts its behaviour more
4840 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4842 * The fasl file version number has changed again. (because of the
4843 bug fix involving the names of PCL MAKE-INSTANCE functions)
4845 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4846 * bug fix: Floating point exceptions are treated much more
4847 consistently on the x86/Linux and PPC/Linux platforms.
4848 * Array initialization with :INITIAL-ELEMENT is now much faster for
4849 cases when the compiler cannot open code the array creation, but
4850 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4851 array accesses have also seen a speed increase.
4852 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4853 specified. (This was at the root of some bad interactions between
4854 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4856 * bug fix: Internal error arguments for undefined functions are now
4857 computed correctly on the PPC/Linux platform.
4858 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4859 Raymond Toy's patch for CMU CL)
4860 * Support for the Solaris 9 operating environment has been included
4861 (thanks to Daniel Merritt)
4862 * A very ugly but hopefully complete draft of the missing FFI chapter
4863 of the manual has been created by reformatting the corresponding
4864 CMU CL manual chapter into (currently very ugly and incoherent)
4865 DocBook and bringing it up to date for SBCL behavior. Thus, the
4866 manual is now essentially complete, at least by my extreme
4867 once-and-only-once standards, whereby it's acceptable to refer to
4868 the doc strings of SB-EXT functions as the primary documentation.
4869 * The fasl file version number has changed again, due to cleanup of
4870 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4871 is no longer a static symbol.)
4873 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4874 * SBCL now builds with OpenMCL (version 0.12) as the
4875 cross-compilation host; also, more progress has been made toward
4876 bootstrapping under CLISP.
4877 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4879 * bug 158 fixed: The compiler can now deal with integer loop
4880 increments different from 1; fixing this turned out also to fix
4882 * bug 169 fixed: no more bogus warnings about using lexical bindings
4883 despite the presence of perfectly good SPECIAL declarations (thanks
4884 to David Lichteblau)
4885 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4886 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4887 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4889 * bug 180 fixed: Method combination specifications no longer ignore
4890 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4891 * bug fix: Structure type predicate functions now check their argument
4892 count as they should.
4893 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4894 correctly. (thanks to Pierre Mai)
4895 * minor incompatible change: The --noprogrammer option is deprecated
4896 in favor of the new --disable-debugger option, which is very similar.
4897 (The major difference is that it takes effect at a slightly different
4898 time at startup, causing handling of errors in --sysinit and
4899 --userinit files will be affected differently.) The
4900 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4901 been added to allow this functionality to be controlled from ordinary
4902 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4903 maintainers, who might want to run non-interactive scripts to
4904 build SBCL cores which will later be used interactively.)
4905 * minor incompatible change: The LOAD function no longer, when given
4906 a wild pathname to load, loads all files matching that pathname.
4907 Instead, an error of type FILE-ERROR is signalled.
4909 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4910 * bug 147 fixed: The compiler preserves its block link/count
4911 invariants more correctly now so that it doesn't crash. (thanks
4913 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4915 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4916 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4917 no-value-for-this-character as NIL (as specified by ANSI).
4918 * HOST-NAMESTRING on physical pathnames now returns a string that is
4919 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4920 (thanks to Christophe Rhodes)
4921 * The Alpha port handles icache flushing more correctly. (thanks to
4923 * More progress has been made toward bootstrapping under CLISP. (thanks
4924 to Christophe Rhodes)
4925 * The fasl file format has changed again, because dynamic loading
4926 on OpenBSD (which has non-ELF object files) motivated some cleanups
4927 in the way that foreign symbols are transformed and passed around.
4928 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4929 is no longer treated as whitespace by the reader, but instead as
4930 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4931 |A
\7fB|, instead of A as it used to.
4933 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4934 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4935 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4936 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4937 this as of 0.7.1.45, but was left out of the previous news section
4938 (thanks to Dan Barlow)
4939 * SBCL now runs on the Solaris operating system on SPARC architectures
4940 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4941 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4942 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4943 * SPARC backend cleanups, allowing builds of cores optimized for V8
4944 and V9 SPARCS, and also emission of code targeted to a particular
4945 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4947 * SBCL is closer to bootstrapping under CLISP, thanks to various
4948 fixes by Christophe Rhodes.
4949 * The fasl file format has changed again, to allow the compiler's
4950 INFO database to support symbol macros.
4951 * The user manual (in doc/) is formatted into HTML more nicely.
4952 (thanks to coreythomas)
4953 * The system is smarter about SUBTYPEP relationships, especially
4954 those involving NOT types (including types such as ATOM which are
4955 represented internally using NOT types). Thus SUBTYPEP is less
4956 likely to return (VALUES NIL NIL) in general, and in particular
4957 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4959 * The fasl file format has changed again, because the internal
4960 representation of types now includes a new slot to support the new
4961 SUBTYPEP-of-NOT-types logic.
4962 * (not a change in the main branch of SBCL, but a related prototype
4963 which can hopefully be merged into the main branch of SBCL in the
4964 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4965 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4966 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4967 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4968 dispatch macro character combinations. (thanks to Alexey Dejneka)
4969 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4970 that superficially look like logical namestrings correctly.
4971 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4973 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4974 default supplied-p) for &optional and &key arguments. (thanks to
4977 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4978 * incompatible change: The compiler is now less aggressive about
4979 tail call optimization, doing it only when (> SPACE DEBUG) or
4980 (> SPEED DEBUG). (This is an incompatible change because there are
4981 programs which relied on the old CMU-CL-style behavior to optimize
4982 away their unbounded recursion which will now die of stack overflow.)
4983 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4984 for non-GENCGC systems has been increased to 20M (since that
4985 seems much closer to the likely performance optimum for modern
4986 systems than the old 4M value was)
4987 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4988 and *DEBUG-PRINT-LEVEL*
4989 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4990 of CMU CL's support for SPARC, and various endianness and other
4991 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4992 * new syntactic sugar for the Unix command line: --load foo.bar is now
4993 an alternate notation for --eval '(load "foo.bar")'.
4995 ** The system now detects stack overflow and handles it gracefully,
4996 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4997 optimization settings. (This is a good thing in general, and
4998 its introduction in this version should be particularly timely
4999 for anyone whose code fails because of suppression of tail
5001 ** The system now hunts for the C variable "environ" in a more
5002 devious way, to avoid segfaults when the C library version differs
5003 between compile time and run time. (thanks to Christophe Rhodes)
5004 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5005 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5006 ** The compiler no longer issues bogus style warnings for undefined
5007 classes in the same source file as the DEFCLASSes which defined
5008 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5010 ** fixes in CONDITION class precedence list for undefined function
5011 errors (thanks to Alexei Dejneka)
5012 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5013 correctly. (thanks to Dan Barlow)
5014 ** portability fixes aiming at bootstrapping under CLISP (thanks
5015 to Dave McDonald and Christophe Rhodes)
5016 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5017 ** fixes in type translation and and type inference (thanks to
5019 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5020 ** various fixes in the new ports (thanks to Dan Barlow)
5021 * several changes related to debugging:
5022 ** suppression of tail recursion, as noted above
5023 ** stack overflow detection, as noted above
5024 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5025 is now the default. (For some time encapsulation has been more
5026 reliable than the breakpoint-based :ENCAPSULATE NIL
5027 implementation, at least on X86 systems; and I just noticed that
5028 encapsulation also seems closer to the spirit of the ANSI
5031 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5033 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5034 up properly again. (There was a packaging bug in 0.7.0 which
5035 left their definitions in SB-SYS::LOAD-FOREIGN and
5036 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5037 vital for most things which interface to C-level interfaces,
5038 like extensions working with sockets or databases or
5039 Perl-compatible regexes or whatever, and the need to fix
5040 this bug is the main reason that 0.7.1 was released so
5042 ** DEFGENERIC is now choosier about the methods it redefines, so that
5043 reLOADing a previously-LOADed file containing DEFGENERICs does
5044 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5045 cycle now works as it should. (thanks to Alexey Dejneka)
5046 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5047 fixed by Christophe Rhodes. (He actually submitted this patch
5048 months ago, and I delayed until after 0.7.0.)
5049 ** Bug 111 (internal compiler confusion about runtime checks on
5050 FUNCTION types) was fixed by Alexey Dejneka.
5051 * Some internal cleanups (getting rid of variables which aren't
5052 needed now that the byte interpreter is gone) caused the fasl
5053 file format number to change again.
5055 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5056 * major incompatible change: The default fasl file extension, i.e. the
5057 default extension for files produced by COMPILE-FILE, has changed
5058 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5060 ** There are many changes in the implementation of the compiler.
5061 SBCL is now essentially a compiler-only implementation of ANSI
5062 Common Lisp. EVAL still "interprets" a few special cases, but
5063 almost all the interesting cases are handled by creating
5064 a LAMBDA expression, calling COMPILE on it, then calling
5065 FUNCALL on the result.
5066 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5067 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5068 Since the code is newer, there might still be some new bugs
5069 (though not as many as before Martin Atzmueller's fixes:-). But
5070 the new code is substantially simpler and clearer, and hopefully
5071 any remaining bugs will be simpler, less fundamental, and more
5072 fixable then the bugs in the old code.
5073 ** The revised compiler is still a little unsteady on its feet.
5075 *** The debugging information it produces (particularly the names
5076 of FUNCTION objects) is sometimes much less useful than what
5077 the old compiler produced.
5078 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5079 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5080 within a MACROLET) has been temporarily weakened.
5081 ** There are new compiler optimizations for various functions:
5082 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5083 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5084 *** the math functions TRUNCATE, FLOOR, and CEILING
5085 *** the function-of-all-trades COERCE
5086 Mostly these should be transparent, but there's one
5087 potentially-annoying problem (bug 117): when the compiler
5088 inline-expands a function and does type analysis on the result,
5089 it can create control paths which have type mismatches, and
5090 when it can't prove that those control paths aren't taken,
5091 it will issue WARNINGs about the type mismatches. This is
5092 a particular problem in practice for the new sequence functions.
5093 It's not clear how this should be fixed, and for now, a
5094 workaround is given in the entry for 117 in the BUGS file.
5095 ** (Because of the interaction between the two previous items --
5096 occasional inlining problems and new inline expansions -- some
5097 of the new sequence function optimizations won't really kick in
5098 completely until debugging information, and then inlining, are
5099 straightened out in some future version.)
5100 * minor incompatible changes:
5101 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5102 DIRECTORY no longer implicitly promotes NIL slots of its
5103 pathname argument to :WILD. In particular, when you ask for the
5104 contents of a directory (which you used to be able to do without
5105 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5106 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5107 ** changes in behavior that ANSI explicitly defines to be
5108 implementation dependent:
5109 *** The new compiler-only implementation still conforms with ANSI,
5110 but acts a little different than before. Besides the obvious
5111 changes in performance tradeoffs (that the cost per form passed
5112 to EVAL has gone up, and the cost per form executed by EVAL
5113 has gone down), the behavior of the system changes a little
5114 because there are no longer any interpreted function objects.
5115 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5116 e.g. doing COMPILE on the output of interactive DEFUN is
5118 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5120 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5121 has changed from (:CL) to NIL.
5122 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5123 e.g. #\Newline and #\Tab, don't have names specified in the
5124 ANSI Common Lisp standard, is now based on their ASCII symbolic
5125 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5126 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5127 are no longer used for output.
5128 ** changes in internal implementation constants:
5129 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5130 4 million. (If your application spends a lot of time GCing and
5131 you have a lot of RAM, you might want to experiment with
5132 increasing it even more.)
5133 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5134 However, almost all old code should still continue to work without
5135 immediate update, as SB-C-CALL is now a (deprecated) nickname
5137 ** Old operator names in the style DEF-FOO are now deprecated in
5138 favor of new corresponding names DEFINE-FOO, for consistency with
5139 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5140 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5141 internal symbols, but a few supported extensions like
5142 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5143 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5144 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5145 etc. as you get deeper into recursive calls to the debugger
5146 command loop, instead of the old "5]", "5]]", "5]]]"
5147 sequence. (I was motivated to do this when squabbles between
5148 ILISP and SBCL left me very deeply nested in the debugger. In the
5149 short term, this change will probably provoke more ILISP/SBCL
5150 squabbles, but hopefully it will be an improvement in the long run.)
5151 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5152 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5153 function, since declaiming return types involving aliens is
5154 (1) annoyingly messy to do by hand and (2) vital to efficient
5155 compilation of code which calls such functions.
5156 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5157 longer reexported by the SB-EXT package. They're solely useful
5158 for alien code, so it seems more logical that you should get
5159 them from the SB-ALIEN package, not in SB-EXT.
5160 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5161 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5162 features. Instead, the code that they used to control is always
5163 built into the system.
5164 * many other bug fixes
5165 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5166 advantage of the new EVAL-WHEN stuff and to clean them up in
5167 general, and they are now more ANSI-compliant in a number of
5168 ways. Martin Atzmueller is responsible for a lot of this.
5169 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5171 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5172 *** correct ERROR type for various file operations
5173 *** some fixes for Lisp streams
5174 *** DEFMETHOD syntax checking
5175 *** changing old weird representation of debug information as
5176 strings (which, among their other deficiencies, don't transform
5177 correctly when you rename packages, and don't change their
5178 print representation when you change things like *PACKAGE*
5179 and *PRINT-LENGTH*) to symbols and lists of symbols
5180 He also made several improvements and fixed several bugs in DESCRIBE.
5181 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5183 *** misbehavior of WRITE-STRING/WRITE-LINE
5184 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5185 and several other LOOP problems as well
5186 *** DIRECTORY when similar filenames are present
5187 *** DEFGENERIC with :METHOD options
5188 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5189 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5190 *** argument ordering in FIND with :TEST option
5191 *** mishandled package designator argument in APROPOS-LIST
5192 *** various problems in the backquote readmacro
5193 *** a bug in APROPOS
5194 *** probably some others that I'm not describing very well here,
5195 since the CVS log documents them by reference to sbcl-devel
5196 messages, and the SourceForge archives aren't working well.:-(
5197 ** Dan Barlow improved the Alpha port (and is making progress on the
5198 PPC port, for those of you who think different).
5199 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5200 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5201 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5202 continues to work on the SPARC port (for those of you in a position
5203 to look down upon our little PC-compatible boxes from a great height).
5204 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5205 and uses that copy, rather than the current dynamic value, when
5206 it's trying to decide whether to truncate output. Thus e.g.
5207 (let ((*print-lines* 50))
5208 (pprint-logical-block (stream nil)
5210 (let ((*print-lines* 8))
5211 (print (aref possiblybigthings i) stream)))))
5212 should now truncate the logical block only at 50 lines, instead of
5213 often truncating it at 8 lines, as it did before.
5214 * The doc/cmucl/ directory, containing old CMU CL documentation
5215 from the time of the fork, is no longer part of the base system.
5216 SourceForge has shut down its anonymous FTP service, and with it
5217 my original plan for distributing the old CMU CL documentation
5218 there. For now, if you need these files you can download an old
5219 SBCL source release and extract them from it.
5220 * The fasl file version number changed again, for dozens of reasons,
5221 some of which are apparent above.
5223 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5224 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5225 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5226 patch, so that DISASSEMBLE output is much nicer.
5227 * The code in the SB-PROFILE package now seems reasonably stable.
5228 I still haven't decided what the final interface should look like
5229 (I'd like PROFILE to interact cleanly with TRACE, since both
5230 facilities use function encapsulation) but if you have a need
5231 for profiling now, you can probably use it successfully with
5232 the current CMU-CL-style interface.
5233 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5234 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5235 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5236 link now returns the dangling link itself, and for similar
5237 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5238 link itself. (In these cases the old code signalled an error and
5239 looped endlessly, respectively.) Thus, DIRECTORY now works even
5240 in the presence of dangling and cyclic symbolic links.
5241 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5242 is now a supported extension again, since the consensus on
5243 sbcl-devel was that it can be useful for ordinary development
5244 work, not just for debugging SBCL itself.
5245 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5246 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5247 that currently-defined functions might be redefined later with
5248 different return types.
5249 * Hash tables can be printed readably, as inspired by CMU CL code
5250 of Eric Marsden and SBCL code of Martin Atzmueller.
5251 * better error handling in CLOS method combination, thanks to
5252 Martin Atzmueller porting Pierre Mai's CMU CL patches
5253 * more overflow fixes for >16Mbyte I/O buffers
5254 * A bug in READ has been fixed, so that now a single Ctrl-D
5255 character suffices to cause end-of-file on character streams.
5256 In particular, now you only need one Ctrl-D at the command
5257 line (not two) to exit SBCL.
5258 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5260 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5261 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5262 does the right thing.
5263 * The implementation of some type tests, especially for CONDITION
5264 types, is now tidier and maybe faster, due to CMU CL code
5265 originally by Douglas Crosher, ported by Martin Atzmueller.
5266 * Some math functions have been fixed, and there are new
5267 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5268 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5269 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5270 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5271 likely to be built into sbcl-0.7.0.)
5272 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5273 CL, ported to SBCL by Martin Atzmueller)
5274 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5275 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5276 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5277 * There's a new slam.sh hack to shorten the edit/compile/debug
5278 cycle for low-level changes to SBCL itself, and a new
5279 :SB-AFTER-XC-CORE target feature to control the generation of
5280 the after-xc.core file needed by slam.sh.
5281 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5282 COMPILE-FILE is no longer supported, so that now every function
5283 gets an entry point, so that block compilation looks a little
5284 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5285 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5286 returns the number of bytes consed since the system started,
5287 rather than the number consed since the first time the function
5288 was called. (The new definition parallels ANSI functions like
5289 CL:GET-INTERNAL-RUN-TIME.)
5290 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5291 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5292 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5293 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5294 * Fasl file version numbers are now independent of the target CPU,
5295 since historically most system changes which required version
5296 number changes have affected all CPUs equally. Similarly,
5297 the byte fasl file version is now equal to the ordinary
5300 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5301 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5302 is no longer recognized. I apologize for this, because it was
5303 listed in SB-EXT as a supported extension, but I found that
5304 its existing behavior was poorly specified, as well as incorrectly
5305 specified, and it looked like too much of a mess to straighten it
5306 out. I have enough on my hands trying to get ANSI stuff to work..
5307 * many patches ported from CMU CL by Martin Atzmueller, with
5308 half a dozen bug fixes in pretty-printing and the debugger, and
5309 half a dozen others elsewhere
5310 * fixed bug 13: Floating point infinities are now supported again.
5311 They might still be a little bit flaky, but thanks to bug reports
5312 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5313 as flaky as they were.
5314 * The --noprogrammer command line option is now supported. (Its
5315 behavior is slightly different in detail from what the old man
5316 page claimed it would do, but it's still appropriate under the
5317 same circumstances that the man page talks about.)
5318 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5319 are now supported, and enabled by default. Thus, the compiler can
5320 handle many floating point and complex operations much less
5321 inefficiently. (Thus e.g. you can implement a complex FFT
5323 * The compiler now detects type mismatches between DECLAIM FTYPE
5324 and DEFUN better, and implements CHECK-TYPE more correctly, and
5325 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5326 thanks to patches from Martin Atzmueller.
5327 * various fixes to make the cross-compiler more portable to
5328 ANSI-conforming-but-different cross-compilation hosts (notably
5329 Lispworks for Windows, following bug reports from Arthur Lemmens)
5330 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5331 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5332 fixed thanks to Pierre Mai's CMU CL patches.
5333 * fixes to keep the system from overflowing internal counters when
5334 it tries to use i/o buffers larger than 16M bytes
5335 * fixed bug 45a: Various internal functions required to support
5336 complex special functions have been merged from CMU CL sources.
5337 (When I was first setting up SBCL, I misunderstood a compile-time
5338 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5339 * improved support for type intersection and union, fixing bug 12
5340 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5341 more obscure bugs as well
5342 * some steps toward byte-compiling non-performance-critical
5343 parts of the system, courtesy of patches from Martin Atzmueller
5344 * Christophe Rhodes has made some debian packages of sbcl at
5345 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5346 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5347 stable, but are nonetheless usable. When he's ready, I'd be happy
5348 to add them to the SourceForge "File Releases" section. (And if
5349 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5350 * new fasl file format version number (because of changes in
5351 internal representation of (OR ..) types to accommodate the new
5352 support for (AND ..) types, among other things)
5354 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5355 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5357 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5359 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5360 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5361 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5362 * DESCRIBE now works on structure objects again.
5363 * Most function call argument type mismatches are now handled as
5364 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5365 know whether the function will be redefined before the call is
5366 executed. (The compiler could flag local calls with full WARNINGs,
5367 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5368 it doesn't keep track of enough information to know whether calls
5369 are local in this sense.)
5370 * Compiler output is now more verbose, with messages truncated
5371 later than before. (There should be some supported way for users
5372 to override the default verbosity, but I haven't decided how to
5373 provide it yet, so this behavior is still controlled by the internal
5374 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5375 src/compiler/ir1util.lisp.)
5376 * Fasl file format version numbers have increased again, because
5377 support for the Gray streams extension changes the layout of the
5378 system's STREAM objects.
5379 * The Gray subclassable streams extension now works, thanks to a
5380 patch from Martin Atzmueller.
5381 * The full LOAD-FOREIGN extension (not just the primitive
5382 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5383 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5384 but like most other programs, it defaults to copying the Unix
5385 environment from the original process instead of starting the
5386 new process in an empty environment.
5387 * Extensions which manipulate the Unix environment now support
5388 an :ENVIRONMENT keyword option which doesn't smash case or
5389 do other bad things. The CMU-CL-style :ENV option is retained
5390 for porting convenience.
5391 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5392 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5394 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5396 * A patch from Martin Atzmueller seems to have solved the SIGINT
5397 problem, and as far as we know, signal-handling now works cleanly.
5398 (If you find any new bugs, please report them!)
5399 * The system no longer defaults Lisp source file names to types
5400 ".l", ".cl", or ".lsp", but only to ".lisp".
5401 * The compiler no longer uses special default file extensions for
5402 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5403 seems to expect a single default extension for all compiled code,
5404 and there's no compelling reason to try to stretch the standard
5405 to allow two different extensions.) Instead, byte-compiled files
5406 default to the same extension as native-compiled files.
5407 * Fasl file format version numbers have increased again, because
5408 a rearrangement of internal implementation packages made some
5409 dumped symbols in old fasl files unreadable in new cores.
5410 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5411 many fewer weird special cases.
5412 * Bug #17 (differing COMPILE-FILE behavior between logical and
5413 physical pathnames) has been fixed, and some related misbehavior too,
5414 thanks to a patch from Martin Atzmueller.
5415 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5416 by Tim Moore, ported to SBCL by Martin Atzmueller.
5417 * Martin Atzmueller fixed several filesystem-related problems,
5418 including bug #36, in part by porting CMU CL patches, which were
5419 written in part by Paul Werkowski.
5420 * More compiler warnings in src/runtime/ are gone, thanks to
5421 more patches from Martin Atzmueller.
5422 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5425 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5427 * DESCRIBE now works on CONDITION objects.
5428 * The debugger now handles errors which arise when trying to print
5429 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5431 * The build system now uses an additional file, customize-target-features.lisp,
5432 to allow local modifications to the target *FEATURES* list. (The point of
5433 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5434 debugging features enabled, without having to worry about propagating it
5435 into everyone's system when I do a "cvs update".) When no
5436 customize-target-features.lisp file exists, the target *FEATURES* list
5437 should be constructed the same way as before.
5438 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5439 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5440 warn about behavior which is undefined under the ANSI spec. Note: This
5441 is specified by ANSI, but it's not very popular with programmers.
5442 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5443 macro in the SBCL sources for an example of a workaround which you
5444 might use to make portable ANSI-standard code which does what you want.
5445 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5446 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5447 when it's used as a non-toplevel form. (This is required in order
5448 to implement the DEFCONSTANT-EQX macro.)
5449 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5450 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5451 funny things, due to bugs in the implementation of EVAL-WHEN
5452 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5453 non-toplevel DEFCONSTANTs are uncommon.)
5454 * The core file version number and fasl file version number have been
5455 incremented, because the old noncompliant DEFCONSTANT behavior involved
5456 calling functions which no longer exist, and because I also took the
5457 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5458 * fixed bug 1 (error handling before read-eval-print loop starts), and
5459 redid debugger restarts and related debugger commands somewhat while
5461 ** The QUIT debugger command is gone, since it did something
5462 rather different than the SB-EXT:QUIT command, and since it never
5463 worked properly outside the main toplevel read/eval/print loop.
5464 Invoking the new TOPLEVEL restart provides the same functionality.
5465 ** The GO debugger command is also gone, since you can just invoke
5466 the CONTINUE restart directly instead.
5467 ** The TOP debugger command is also gone, since it's redundant with the
5468 FRAME 0 command, and since it interfered with abbreviations for the
5470 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5472 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5473 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5474 some porting work by Martin Atzmueller)
5475 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5476 with a boatload of patches which he ported to SBCL. Now that those
5478 ** The system tries to make sure that its low-priority messages
5479 are prefixed by semicolons, to help people who like to use
5480 syntax highlighting in their ILISP buffer. (This patch
5481 was originally due to Raymond Toy.)
5482 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5483 patches originally written by Raymond Toy.
5484 ** The compiler understands coercion between single-value and
5485 multiple-VALUES type expressions better, getting rid of some very
5486 weird behavior, thanks to patches originally by Robert MacLachlan
5487 and Douglas Crosher.
5488 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5489 lambda lists, thanks to a patch originally by Pierre Mai.
5490 ** The system no longer bogusly warns about "abbreviated type
5492 ** The compiler gets less confused by inlining and RETURN-FROM,
5493 thanks to some patches originally by Tim Moore.
5494 ** The system no longer hangs when dumping circular lists to fasl
5495 files, thanks to a patch originally from Douglas Crosher.
5496 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5497 undefined function error.
5498 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5499 in structure slot initforms) for now, documented workaround instead:-|
5500 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5501 * fixed bug 5: added stubs for various Gray stream functions called
5502 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5503 installed, at least appropriate type errors are generated
5504 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5505 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5506 consistently in DEFMETHOD forms.
5507 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5508 it doesn't seem to affect SBCL after all
5509 * The C runtime system now builds with better optimization and many
5510 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5512 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5514 * The system is now under CVS at SourceForge (instead of the
5515 CVS repository on my home machine).
5516 * The new signal handling code has been tweaked to treat register
5517 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5518 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5519 downstream, e.g. in debug-int.lisp, has implicit dependencies
5520 on the unsignedness of integer representation of machine words,
5521 and that caused the system to bomb out with infinite regress
5522 when trying to recover from type errors involving signed values,
5523 e.g. (BUTLAST '(1 2 3) -1).)
5524 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5525 (This was one of the bugs Peter Van Eynde reported back in July.)
5526 * The system now uses code inspired by Colin Walters' O(N)
5527 implementation of MAP (from the cmucl-imp@cons.org mailing
5528 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5529 inline the MAP operation, and there is more than one
5530 sequence argument to the MAP call (so that it can't just
5531 do ETYPECASE once and for all based on the type of the
5532 single sequence argument). (The old non-inline implementation
5533 of the general M-argument sequence-of-length-N case required
5534 O(M*N*N) time when any of the sequence arguments were LISTs.)
5535 * The QUIT :UNIX-CODE keyword argument has been renamed to
5536 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5537 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5539 * Raymond Wiker's patches to port dynamic loading from Linux to
5540 FreeBSD have been added.
5541 * The BUGS file is now more nearly up to date, thanks in large part
5542 to Martin Atzmueller's review of it.
5543 * The debugger now flushes standard output streams before it begins
5544 its output ("debugger invoked" and so forth).
5545 * The core version number and fasl file version number have both
5546 been incremented, because of incompatible changes in the layout
5548 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5549 used to not be called for a saved Lisp image.)
5550 * Martin Atzmueller's version of a patch to fix a compiler crash,
5551 as posted on sbcl-devel 13 September 2000, has been installed.
5552 * Instead of installing Martin Atzmueller's patch for the
5553 compiler transform for SUBSEQ, I deleted the compiler transform,
5554 and transforms for some similar consing operations.
5555 * A bug in signal handling which kept TRACE from working on OpenBSD
5557 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5558 away by constant folding
5559 * The system now defines its address space constants in one place
5560 (in the Lisp sources), and propagates them automatically elsewhere
5561 (through GENESIS and the sbcl.h file). Therefore, patching the
5562 address map is less unnecessarily tedious and error-prone. The
5563 Lisp names of address space constants have also been systematized.
5564 * CVS tags like dollar-Header-dollar have been removed from
5565 the sources, because they have never saved me trouble and
5566 they've been source of trouble working with patches and other
5567 diff-related operations.
5568 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5569 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5571 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5573 * The system has been ported to OpenBSD.
5574 * The system now compiles with a simple "sh make.sh" on the systems
5575 that it's supported on. I.e., now you no longer need to tweak
5576 text in the target-features.lisp-expr and symlinks in src/runtime/
5577 by hand, the make.sh takes care of it for you.
5578 * The system is no longer so grossly inefficient when compiling code
5579 involving vectors implemented as general (not simple) vectors (VECTOR T),
5580 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5581 which dares to use the various sequence functions on non-simple
5582 vectors, takes less of a performance hit.
5583 * There is now a primitive type predicate VECTOR-T-P
5584 to test for the (VECTOR T) type, so that e.g.
5585 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5586 can now be compiled with some semblance of efficiency. (The old code
5587 turned the type declaration into a full call to %TYPEP at runtime!)
5588 * AREF on (VECTOR T) is still not fast, since it's still compiled
5589 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5590 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5591 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5592 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5593 without making full calls to SUBTYPEP at runtime.
5594 (Some analogous efficiency issues for non-simple vectors specialized to
5595 element types other than T, or for non-simple multidimensional arrays,
5596 have not been addressed. They could almost certainly be handled the
5597 same way if anyone is motivated to do so.)
5598 * The changes in array handling break binary compatibility, so
5599 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5600 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5601 instead of (VALUES T T).
5602 * By following the instructions that Dan Barlow posted to sbcl-devel
5603 on 2 July 2000, I was able to enable primitive dynamic object
5604 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5605 functionality is not implemented (since it calls ld to resolve
5606 library references automatically, requiring RUN-PROGRAM for its
5607 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5608 try to resolve library references) is now supported.
5609 * The system now flushes the standard output streams when it terminates,
5610 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5611 them at several other probably-convenient times, e.g. in each pass of
5612 the toplevel read-eval-print loop, and after evaluating a form given
5613 as an "--eval" command-line option. (These changes were motivated by a
5614 discussion of stream flushing issues on cmucl-imp in August 2000.)
5615 * The source transform for TYPEP of array types no longer assumes
5616 that an array whose element type is a not-yet-defined type
5617 is implemented as an array of T, but instead punts, so that the
5618 type will be interpreted at runtime.
5619 * There is now some support for cross-compiling in make.sh: each of
5620 the phases of make.sh has its own script. (This should be transparent
5621 to people doing ordinary, non-cross-compile builds.)
5622 * Since my laptop doesn't have hundreds of megabytes of memory like
5623 my desktop machine, I became more motivated to do some items on
5624 my to-do list in order to reduce the size of the system a little:
5625 ** Arrange for various needed-only-at-cold-init things to be
5626 uninterned after cold init. To support this, those things have
5627 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5628 symbols with such names are now uninterned after cold init).
5629 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5630 fasl files for cold load.
5631 ** Remove the old compiler structure pooling code (which used to
5632 be conditional on the target feature :SB-ALLOC) completely.
5633 ** Redo the representation of some data in cold init to be more compact.
5634 (I also looked into supporting byte compiled code at bootstrap time,
5635 which would probably reduce the size of the system a lot, but that
5636 looked too complicated, so I punted for now.)
5637 * The maximum signal nesting depth in the src/runtime/ support code has
5638 been reduced from 4096 to 256. (I don't know any reason for the very
5639 large old value. If the new smaller value turns out to break something,
5640 I'll probably just bump it back up.)
5641 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5643 * Many, many bugs reported by Peter Van Eynde have been added to
5644 the BUGS list; some have even been fixed.
5645 * While enabling dynamic object file loading, I tried to make the
5646 code easier to understand, renaming various functions and variables
5647 with less ambiguous names, and changing some function calling
5648 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5649 * While trying to figure out how to do the OpenBSD port, I tried to
5650 clean up some of the code in src/runtime/. In particular, I dropped
5651 support for non-POSIX signal handling, added various comments,
5652 tweaked the code to reduce the number of compilation warnings, and
5653 renamed some files to increase consistency.
5654 * To support the new automatic configuration functionality in make.sh,
5655 the source file target-features.lisp-expr has been replaced with the
5656 source file base-target-features.lisp-expr and the machine-generated
5657 file local-target-features.lisp-expr.
5658 * fixed a stupid quoting error in make.sh so that using CMU CL
5659 "lisp -batch" as cross-compilation host works again
5661 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5663 * DESCRIBE no longer tries to call itself recursively to describe
5664 bound/fbound values, so that it no longer fails on symbols which are
5665 bound to themselves (like keywords, T, and NIL).
5666 * DESCRIBE now works on generic functions.
5667 * The printer now prints less-screwed-up representations of closures
5668 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5669 * A private symbol is used instead of the :EMPTY keyword previously
5670 used to mark empty slots in hash tables. Thus
5671 (DEFVAR *HT* (MAKE-HASH-TABLE))
5672 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5673 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5674 now does what ANSI says that it should. (You can still get
5675 similar noncompliant behavior if bang on the hash table
5676 implementation with all the symbols you get back from
5677 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5678 This breaks binary compatibility, since tests for equality to
5679 :EMPTY are wired into things like the macroexpansion of
5680 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5682 * There's now a minimal placeholder implementation for CL:STEP,
5683 as required by ANSI.
5684 * An obscure bug in the interaction of the normal compiler, the byte
5685 compiler, inlining, and structure predicates has been patched
5686 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5687 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5689 * Missing ordinary arguments in a macro call are now detected even
5690 when the macro lambda list contains &KEY or &REST.
5691 * The debugger no longer complains about encountering the top of the
5692 stack when you type "FRAME 0" to explicitly instruct it to go to
5693 the top of the stack. And it now prints the frame you request even
5694 if it's the current frame (instead of saying "You are here.").
5695 * As specified by ANSI, the system now always prints keywords
5696 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5698 * The default initial SIZE of HASH-TABLEs is now smaller.
5699 * Type information from CLOS class dispatch is now propagated
5700 into DEFMETHOD bodies, so that e.g.
5701 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5703 is now basically equivalent to
5704 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5705 (DECLARE (TYPE SINGLE-FLOAT X))
5707 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5708 operation, without having to do run-time type dispatch.
5709 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5710 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5711 * Since I don't seem to be making big file reorganizations very often
5712 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5713 is overflowing my ability to conveniently back them up), I've finally
5714 checked the system into CVS. (The CVS repository is on my home system,
5715 not at SourceForge -- putting it on SourceForge might come later.)
5716 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5717 high-level GC-NOTIFY-FOO functions send their output. (There's
5718 still very little control of where low-level verbose GC functions
5719 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5720 less than it used to -- the GC-NOTIFY-FOO functions are now under
5721 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5722 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5723 in only one place in the source code, and propagates it automatically
5724 everywhere that it's needed. Thus e.g. when I bump the version from
5725 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5726 * The C source files now include boilerplate legalese and documentation
5727 at the head of each file (just as the Lisp source files already did).
5728 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5729 to his page will be replaced with a link to his new CLiki service.
5731 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5733 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5734 * The build process now looks for GNU make under the default name "gmake",
5735 instead of "make" as it used to. If GNU make is not available as "gmake"
5736 on your system, you can change this default behavior by setting the
5737 GNUMAKE environment variable.
5738 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5739 can build without error under CMU CL.
5741 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5743 * There is now a partial SBCL user manual (with some new text and some
5744 text cribbed from the CMU CL manual).
5745 * The beginnings of a profiler have been added (starting with the
5746 CMU CL profiler and simplifying and cleaning up). Eventually the
5747 main interface should be through the TRACE macro, but for now,
5748 it's still accessed through vaguely CMU-CL-style functions and macros
5749 exported from the package SB-PROFILE.
5750 * Some problems left over from porting CMU CL to the new
5751 cross-compilation bootstrap process have been cleaned up:
5752 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5753 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5754 part when getting rid of the compiler *BACKEND* stuff.)
5755 ** The value of *NULL-TYPE* was screwed up, because it was
5756 being initialized before the type system knew the final
5757 definition of the 'NULL type. This screwed up several key
5758 optimizations in the compiler, causing inefficiency in all sorts
5759 of places. (I found it because I wanted to understand why
5760 GET-INTERNAL-RUN-TIME was consing.)
5761 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5762 PROCLAIM FTYPE information. Unfortunately this broke binary
5763 compatibility again, since now the forms output by DEFGENERIC
5764 to refer to functions which didn't exist in 0.6.3.
5765 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5766 can use the new (as of 0.6.3) transform for SOME into MAP into
5768 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5769 values to (INTEGER 0 1000000), so that the time code will no longer
5770 occasionally get blown up by Linux returning 1000000 microseconds
5771 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5772 its output conform to the ANSI spec. (Alas, this makes its output
5773 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5774 * A full call to MAP NIL with a single sequence argument no longer conses.
5775 * fixes to problems pointed out by Martin Atzmueller:
5776 * The manual page no longer talks about multiprocessing as though
5777 it were currently supported.
5778 * The ILISP support patches have been removed from the distribution,
5779 because as of version 5.10.1, ILISP now supports SBCL without us
5780 having to maintain patches.
5781 * added a modified version of Raymond Toy's recent CMU CL patch for
5782 EQUALP comparison of HASH-TABLE
5784 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5786 * The system still can't cross-compile itself with
5787 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5788 entails), but at least it can compile more of itself that way
5789 than it used to be able to, and various buglets which were uncovered
5790 by trying to cross-compile itself that way have now been fixed.
5791 * This release breaks binary compatibility again. This time
5792 at least I've incremented the FASL file format version to 2, so that the
5793 problem can be detected reliably instead of just causing weird errors.
5794 * various new style warnings:
5795 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5796 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5797 ** using the lexical binding of a variable named in the *FOO* style
5798 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5799 as specified by ANSI.
5800 * *RANDOM-STATE* is no longer automatically initialized from
5801 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5802 default behavior of the system is to repeat its behavior every time
5803 it's run. If you'd like to change this behavior, you can always
5804 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5805 old convention there was no comparably easy way to get the system to
5806 repeat its behavior every time it was run.
5807 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5808 FTYPE declarations has been removed, in favor of their ANSI
5809 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5810 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5811 the types of their sequence arguments can be determined at compile time.
5812 This is done through a new open code expansion for MAP which eliminates
5813 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5814 argument types can be determined at compile time.
5815 * The optimizer now transforms COERCE into an identity operation when it
5816 can prove that the coerced object is already of the correct type. (This
5817 can be a win for machine generated code, including the output of other
5818 optimization transforms, such as the MAP transform above.)
5819 * Credit information has been moved from source file headers into CREDITS.
5820 * Source file headers have been made more standard.
5821 * The CASE macro now compiles without complaining even when it has
5824 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5826 * (Note that the way that the PCL macroexpansions were rewritten
5827 to accommodate the change in DEFGENERIC below breaks binary
5828 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5829 not run under sbcl-0.6.2. Once we get out of alpha releases,
5830 i.e. hit release 1.0.0, we'll probably try to maintain binary
5831 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5832 and sbcl-1.4.4. Until then, however, it might be fairly common
5833 for maintenance releases to break binary compatibility.)
5834 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5836 * The reporting of unhandled signals has been changed to print some
5837 explanatory text as well as the report form. (Previously only
5838 the report form was printed.)
5839 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5840 it defines, so that the compiler no longer issues undefined function
5841 warnings for compiled-but-not-yet-loaded generic functions.
5842 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5843 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5844 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5845 section of the ANSI spec are supported.
5846 * The "" nickname for the "KEYWORD" package has been removed.
5847 The reader still handles symbol tokens which begin with a package marker
5848 as keywords, but it doesn't expose its mechanism for doing so in the
5849 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5850 * The system now issues STYLE-WARNINGs for contradictory TYPE
5851 proclamations. (Warnings for contradictory FTYPE proclamations would
5852 be nice too, but those can't be done usefully unless the type system
5853 is made smarter about FUNCTION types.)
5854 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5855 systematized, so that "*target-*.lisp is supposed to exist only on the
5856 target and imply that there's a related file which exists on the
5857 host, and *host-*.lisp is supposed to exist only on the host and imply
5858 that there's a related file which exists on the target. This involves a
5859 lot of renaming. Hopefully the acute confusion caused by the renaming
5860 will be justified by the reduction in chronic confusion..
5861 ** runtime-type.lisp -> early-target-type.lisp
5862 ** target-type.lisp -> late-target-type.lisp
5863 ** early-host-format.lisp -> early-format.lisp
5864 ** late-host-format.lisp -> late-format.lisp
5865 ** host-error.lisp -> misc-error.lisp
5866 ** early-error.lisp -> early-target-error.lisp
5867 ** late-error.lisp -> late-target-error.lisp
5868 ** host-defboot.lisp -> early-defboot.lisp
5869 ** code/misc.lisp -> code/target-misc.lisp
5870 ** code/host-misc.lisp -> code/misc.lisp
5871 ** code/numbers.lisp -> code/target-numbers.lisp
5872 ** code/early-numbers.lisp -> numbers.lisp
5873 ** early-host-type.lisp -> early-type.lisp
5874 ** late-host-type.lisp -> late-type.lisp
5875 ** host-typep.lisp -> typep.lisp
5876 ** load.lisp -> target-load.lisp
5877 ** host-load.lisp -> load.lisp
5878 ** host-disassem.lisp -> disassem.lisp
5879 ** host-insts.lisp -> insts.lisp
5880 ** byte-comp.lisp -> target-byte-comp.lisp
5881 ** host-byte-comp.lisp -> byte-comp.lisp
5882 ** host-signal.lisp -> signal.lisp
5883 ** host-defstruct.lisp -> defstruct.lisp
5884 ** late-target-type.lisp -> deftypes-for-target.lisp
5885 Furthermore, several other previously target-only files foo.lisp (e.g.
5886 hash-table.lisp and random.lisp) have been split into a target-and-host
5887 foo.lisp file and a target-only target-foo.lisp file, with their key type
5888 definitions in the target-and-host part, so that the cross-compiler will
5889 know more about target types.
5890 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5891 gone away. In their place are various *BACKEND-FOO* variables
5892 corresponding to the slots of the old structure.
5893 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5894 into the target SBCL has been fixed.
5895 * The chill.lisp system for loading cold code into a running SBCL
5897 * Support for the CMU CL "scavenger hook" extension has been removed.
5898 (It was undocumented and unused in the CMU CL sources that SBCL was
5899 derived from, and stale in sbcl-0.6.1.)
5900 * Various errors in the cross-compiler type system were detected
5901 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5902 (enabling various consistency checks). Many of them were fixed,
5903 but some hard problems remain, so the compiler is back to
5904 running without *TYPE-SYSTEM-INITIALIZED* for now.
5905 * As part of the cross-compiler type system cleanup, I implemented
5906 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5907 * I have started adding UNCROSS calls throughout the type system
5908 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5909 on cross-compiler input files will be able to go away, and various
5911 * CONSTANTP now returns true for quoted forms (as explicitly required
5914 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5916 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5917 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5918 (MAKE-LIST -1). In the longer term, it ought to become true
5919 that declarations are assertions even at SAFETY 1. For now, it's not
5920 quite true even at SAFETY 3, but it's at least more nearly true..
5921 (Note that this change seems to increases the size of the system by
5922 O(5%) and to decrease the speed of the compiler by 20% or more.)
5923 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5924 for the problem of printing dozens of lines of distracting information
5925 about low-level system machinery as part of the top stack frame
5926 on entry to the debugger when an undefined function was called.
5927 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5928 is not reset to COMMON-LISP-USER.
5929 * Compilation of stuff related to dyncount.lisp has been made conditional
5930 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5931 smaller. The various dyncount-related symbols have been moved into
5932 a new "SB-DYNCOUNT" package.
5933 * tty-inspect.lisp has been renamed to inspect.lisp.
5934 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5935 feature has gone away. (When we eventually port to other flavors of
5936 libc and/or Unix, we'll try to make the differences between flavors
5937 invisible at the user level.)
5938 * Various other *FEATURES* tags, and/or their associated conditionals,
5939 have been removed if obsolescent, or given better documentation, or
5940 sometimes given more-mnemonic names.
5942 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5944 * tidied up "make.sh" script
5945 * tidied up system directory structure
5946 * better "clean.sh" behavior
5947 * added doc/FOR-CMUCL-DEVELOPERS
5948 * many many small tweaks to output format, e.g. removing possibly-confusing
5949 trailing #\. character in DESCRIBE-INSTANCE
5950 * (EQUALP #\A 'A) no longer signals an error.
5951 * new hashing code, including EQUALP hashing
5952 * tidied up Lisp initialization and toplevel
5953 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5954 * command line argument processing
5955 * added POSIX-GETENV function to deal with Unix-ish environment variables
5956 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5957 terminating SBCL on EOF
5958 * non-verbose GC by default
5959 * There is no more "sbcl" shell script; the sbcl file is now the C
5960 runtime executable (just like CMU CL).
5961 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5963 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5964 symbol and package information as Lisp native symbol and package objects
5965 instead of strings naming symbols and strings naming packages. This way,
5966 whenever packages are renamed (as in warm init), debug information is
5967 transformed along with everything else.
5968 * tweaked the optimization policy declarations which control the building
5969 of SBCL itself. Now, among other things, the system no longer saves
5970 source location debugging information. (This helps two problems at once
5971 by reducing SBCL size and by keeping SBCL from trying to look for its
5972 sources -- which may not exist -- when reporting errors.)
5973 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5974 debugging and testing purposes
5975 * cleaned up printing, making the printer call PRINT-OBJECT for
5976 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5977 methods, giving nearly-ANSI behavior
5978 * converted almost all special variables to use *FOO* naming convention
5979 * deleted PARSE-TIME functionality, since it can be done portably
5980 * moved some files out of cold init into warm init
5981 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5983 * regularized formatting of source files
5984 * added an install.sh script
5985 * fixed ridiculous memory usage of cross-compiler by making
5986 compiler/alloc.lisp not try to do pooling unless it can hook
5987 itself into the GC of the cross-compilation host. Now the system
5988 builds nicely on my old laptop.
5989 * added :SB-ALLOC in target-features.lisp-expr
5990 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5991 was not implemented)
5992 * re-did condition handling and note reporting in the compiler. Notes
5993 are no longer handled by signalling conditions. Style warnings
5994 and warnings are handled more correctly and reported in such a way
5995 that it's easy to find one or the other in your output (so that you
5996 can e.g. figure out which of many problems caused COMPILE-FILE to
5998 * changed the severity of several compiler warnings from full WARNING
5999 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6000 compiler note reporting so that it doesn't use the condition system
6001 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6002 COMPILE-FILE command)
6003 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6004 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6005 no longer supported, since their implementation was deeply intertwingled
6006 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6007 * removed bogus "support" for compiler macros named (SETF FOO), and
6008 removed the compiler macro for SETF INFO (but only after making a fool
6009 of myself on the cmucl-imp mailing list by posting a bogus patch for
6010 DEFINE-COMPILER-MACRO..)
6011 * Compiled files containing forms which have side effects on the Lisp
6012 reader (such as DEFPACKAGE forms) are now handled more correctly.
6013 (Compiler queuing of top level lambdas has been suppressed by setting
6014 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6015 * deleted various currently-unused source files, e.g. gengc.lisp. They
6016 may be added back at some point e.g. when porting to other architectures,
6017 but until they are it's distracting to distribute them and to try to
6019 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6020 there were so many of them they're just distractions, and UNCROSS is
6021 known to be able to handle the current sources
6022 * moved PROFILE functionality into TRACE, so that it will be clear
6023 how the wrapping and unwrapping of functions when you profile them
6024 interacts with the wrapping and unwrapping of functions when you
6025 trace them. (Actually, the functionality isn't there yet, but at least
6026 the interface specification is there. Hopefully, the functionality will
6027 arrive with some future maintenance release.)
6028 * removed host-oops.lisp
6029 * changed signature of QUIT function to allow UNIX-CODE argument
6030 * fixed READ-SEQUENCE bug
6031 * tweaked verbose GC output so that it looks more like the progress
6032 output that ANSI specifies for functions like LOAD
6033 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6034 * added <http://sbcl.sourceforge.com> to the banner information printed by