1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.47:
3 * enhancement: read() and write() have been added to SB-POSIX.
4 * enhancement: types of DEFSTRUCT constructors are proclaimed more
5 accurately, allowing better typechecking of call-sites.
6 * optimization: slightly faster ISQRT. (lp#713343)
7 * bug fix: TRACE behaves better when attempting to trace undefined
10 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
11 * bug fix: fix mach port rights leaks in mach exception handling code on
12 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
14 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
15 * enhancement: redefinition warnings for macros from different files. (lp#434657)
16 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
17 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
18 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
19 processed using EVAL -- now the appropriate toplevel form is reported instead.
20 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
21 declarations. (lp#726331)
22 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
23 that NIL/NULL is excluded from the type.
24 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
26 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
28 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
29 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
30 stack-allocated values out of their dynamic-extent. (lp#310175)
31 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
32 x86-64 builds caused a type-error.
33 * bug fix: calling COMPILE with something else than a lambda-expression as the
34 second argument reports a more sensible error. (lp#718905)
35 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
36 are detected. (lp#520607)
37 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
39 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
40 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
41 methods. (regression from 1.0.45.18)
42 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
43 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
44 * bug fix: several foreign functions accepting string also accepted NIL and
45 consequently caused a memory fault at 0 now signal a type-error instead.
47 * bug fix: under rare circumstances, constraint propagation could rewrite a
48 variable reference to refer to a variable not in scope, causing an error
49 during physical environment analysis when attempting to close over the
51 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
53 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
54 * enhancement: largefile support on Solaris.
55 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
57 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
58 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
60 * optimization: ERROR and CERROR are approximately 5 times faster.
61 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
62 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
63 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
64 up instance creation in those cases.
65 * optimization: arithmetic operations with multiple constant arguments in now
66 have them reduced at compile-time. (lp#676414)
67 * optimization: determining current character position on string-streams for
68 pretty-printing was overly slow.
69 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
70 lifetime analysis to overwrite closed-over variables (lp#681092).
71 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
72 were not handled correctly (lp#713063).
73 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
75 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
77 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
78 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
79 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
80 unintern the wrong symbol with the same name. (lp#693796)
81 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
82 making it possible to restore the initial table if it has been messed up.
85 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
86 * enhancement: ~/ and ~user/ are treated specially in pathnames.
87 Refer to documentation for details.
88 * enhancement: ASDF has been updated to version 2.010.
89 * optimization: mutated closed-over variables that are only accessed by
90 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
91 declared to be DYNAMIC-EXTENT) are stored directly in their containing
92 stack frame, rather than allocating a VALUE-CELL (lp#586103).
93 * optimization: UNWIND-PROTECT cleanup functions are now declared
95 * bug fix: backtracing function with &REST arguments now shows the full
96 argument list. (lp#310173)
97 * bug fix: return types for functions with complex lambda-lists are now
98 derived properly (lp#384892)
99 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
100 long string arguments slowed the compiler down to a crawl.
101 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
102 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
103 in the DEFMETHOD body.
104 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
105 messages, being instead replaced with the corresponding function name.
106 * bug fix: don't derive overly complex unions of numeric types for arithmetic
107 operators. (lp#309448)
109 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
110 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
111 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
112 * enhancement: ALLOCATION-INFORMATION also provides the page the object
114 * enhancement: default dynamic-space size can be configured at build-time
115 without touching source, using the --dynamic-space-size argument to make.sh.
116 * enhancement: DESCRIBE recognizes symbols naming optimization policy
117 qualities, and mentions ALWAYS-BOUND declarations.
118 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
120 * enhancement: ASDF has been updated to 2.009.
121 * enhancement: the system detects known type-erros in calls better,
122 signalling a full warning about violated proclaimed FTYPEs and violations
123 of derived FTYPEs within the same file, including self-calls.
124 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
125 * optimization: constant-folding exploits numeric and character types, in
126 addition member types.
127 * optimization: numeric, character and member types that are inhabited by
128 exactly one value are tested with EQL.
129 * optimization: more conditional branches are eliminated during IR1.
130 Branches are simplified before performing if/if-conversion, and simple
131 equivalent branches (that only read the same constant or variable) are
133 * improvements to the Windows port:
134 ** change: canonical unparsing form for pathname namestrings now uses / as
135 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
136 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
137 on Windows. (thanks to Kalyanov Dmitry)
138 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
140 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
141 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
142 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
143 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
145 * bug fix: interrupts arriving during CL:OPEN caused an error.
146 * bug fix: overeager character buffering could cause input to block
147 spuriously when reading from a pipe (lp#643686)
148 * bug fix: more efficient timer expiry should avoid starvation on systems
149 where number of SIGALRMs per second is restricted. (lp#375515)
150 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
151 * bug fix: compile-times no longer scale linearly with the size of
152 quoted lists in source-code. (lp#654289)
153 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
154 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
155 so badly. (lp#654485)
156 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
157 an error for eg. STRUCTURE. (lp#458015)
158 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
159 (lp#613871, thanks to Roman Marynchak)
160 * bug fix: more reliable &REST list type derivation. (lp#655203)
161 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
162 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
163 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
164 also declared NOTINLINE. (lp#655581)
165 * bug fix: the compiler could attempt to emit constant left shifts of
166 greater value than n-word-bits. (lp#309063)
167 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
168 type information for the function being set. (lp#659220)
169 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
170 containing self-calls were recompiled with a new signature, and failed
171 to warn when a self-call using the old signature was left in. (lp#655126)
172 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
173 :DEFAULT when the default external had character size other than 8 bits.
175 * bug fix: derived types of functions in the same file were implicitly
176 trusted, leading to potential heap corruption when those function were
177 defined incompatibly. (lp#657499)
178 * bug fix: existing ASDF source registries are ignored when building
180 * bug fix: short-form DEFSETF checks that the second argument is a symbol
181 (lp#655824, thanks to Roman Marynchak)
182 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
183 package-lock violation was detected. (lp#660752)
184 * bug fix: the system can store different docstrings for a single function
185 under different names. (lp#661631, regression from 1.0.29.24)
186 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
187 properly. (lp#384801)
188 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
189 of specified length could confuse the type derivation in unsafe code.
191 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
192 fork with multiple Lisp threads running is made on every platform,
193 not just Darwin. (lp#451111)
194 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
195 around when core was saved, which could cause undefined behaviour when the
197 * bug fix: Allow UNTRACE of functions that are no longer defined
198 (lp#667657, thanks to Attila Lendvai)
199 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
200 compile-time warning (lp#664373, thanks to Stas Boukarev)
202 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
203 * incompatible change: FD-STREAMS no longer participate in the serve-event
204 event-loop by default. (lp#316072)
205 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
206 affects streams from CL:OPEN.
207 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
208 default, but this is liable to change: applications needing serve-event
209 for socket streams should explicitly request it using :SERVE-EVENTS T
211 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
213 * enhancement: CLOS effective method functions and defclass slot typechecking
214 function now have debug names for use in backtraces and profiles.
215 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
217 * enhancement: symbols are printed using fully qualified names in several
218 error and warning messages which are often associated with package
219 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
220 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
221 thanks to Andrew Golding)
222 * bug fix: reading /proc files on Linux works. (lp#425199)
223 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
225 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
226 breaking code that tried to write the value of a printer control variable.
227 (lp#581564, thanks to Stas Boukarev)
228 * bug fix: WRITE compiler macro did not handle output stream designators
229 correctly. (lp#598374, thanks to Stas Boukarev)
230 * bug fix: better availability of names of foreign functions in backtraces
231 on Linux. (lp#626962, thanks to Stas Boukarev)
232 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
233 lp#627581, thanks to Josh Elsasser and Jim Wise)
234 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
235 thanks to Josh Elsasser)
236 * bug fix: using aliases for builtin classes as defmethod specializers
237 without adding DEFTYPEs for them works. (lp#618387)
238 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
240 * bug fix: legally dynamic-extent lists and vectors used as
241 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
242 * bug fix: inline-expansion creating references to dead lambda-variables
243 (lp#454681, thanks to Alexey Dejneka)
244 * bug fix: better error message for bogus numerical arguments to RANDOM.
245 (lp#598986, thanks to Stas Boukarev)
246 * bug fix: the compiler occasionally inlined references from incompatible
247 environments occurs. (lp#308951)
248 * bug fix: the compiler threw an error when trying to compile a local
249 function (labels or flet) known to take a specialized complex argument.
250 (not in launchpad, reported by sykopomp in #lispgames)
251 * bug fix: package-locks failed to protect against compile-time effects of
252 DEFUN when the symbol previously had a macro definition. (lp#576637)
253 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
254 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
255 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
256 * bug fix: evaluation in debugger REPL works using the global context when
257 in frames that do not have sufficient debug information.
258 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
260 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
262 * bug fix: interrupt taking longer than the requested period caused SLEEP
263 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
265 changes in sbcl-1.0.42 relative to sbcl-1.0.41
267 ** Cross-compilation host is now specified to make.sh using
268 command-line argument --xc-host=<command> instead of a positional
269 argument. (thanks to Daniel Herring)
270 ** Install location can be specified to make.sh using command-line
271 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
272 * optimization: The default implementation of
273 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
274 * enhancement: Explicit memory barrier operations are now available for use
275 by multithreaded code. See documentation for details.
276 * enhancement: Experimental support for threading on Linux/PPC.
277 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
278 * bug fix: EXPT signals an error if first argument is a zero and second
279 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
280 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
281 (lp#576594, thanks to Roman Marynchak)
282 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
283 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
285 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
286 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
287 cached, leading to many fewer expensive calls to
288 COMPUTE-APPLICABLE-METHODS.
289 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
290 CLASS argument, search for and call an appropriate optimized ctor function
292 * bug fix: WRITE always returns the correct value.
294 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
295 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
296 * bug fix: Name conflicts between symbols passed as arguments to a single
297 call to IMPORT no longer add multiple symbols with the same name to the
298 package (detectable via DO-SYMBOLS).
299 * bug fix: support building without the dlshim on darwin x86 and x86-64
301 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
303 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
304 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
306 * bug fix: linkage-table entries on PPC now no longer overflow their
307 space allocation (potentially causing crashes if they are written out
309 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
310 platforms, preventing the GC from seeing stale pointers on the control
311 stack in subsequent GCs (which would, and does, break invariants).
312 * bug fix: 32-bit unicode external formats now work on big-endian systems.
313 * bug fix: Literal characters with code points greater than about 32767
314 now work on PPC UNICODE builds.
315 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
316 high order bits are explicitly cleared out. In some contrived situations,
317 this could lead to wrong results in mixed real/complex float arithmetic.
318 * bug fix: Fix function/macro redefinition warnings when building with
319 clisp. (lp#576787, thanks to Josh Elsasser)
320 * new platform: experimental support for ppc/openbsd (thanks to Josh
322 * bug fix: Floating-point traps now work on ppc/linux.
324 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
325 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
326 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
327 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
328 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
329 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
330 SB-THREAD:GRAB-MUTEX.
331 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
332 contain additional data structures and tools for concurrent programming;
333 at the moment it contains a lock-free queue, and a lock-free mailbox
335 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
336 GET-MUTEX but takes &key rather than &optional parameters. Also added
337 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
339 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
340 SB-THREAD:WAIT-ON-SEMAPHORE.
341 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
343 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
344 conditions to defer the deadline for forever.
345 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
347 * enhancement: errors from NO-APPLICABLE-METHOD and
348 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
349 generic function call.
350 * enhancement: SB-BSD-SOCKET improvements
351 ** sockets and socket streams now have a more informative printed
352 representation based on the corresponding SOCKET-NAME and
354 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
356 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
357 CL:CLOSE when appropriate, and no longer disassociates the stream
358 from the socket if close failed. (lp#543951)
359 * improvements to the instrumenting profiler
360 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
361 ** optimization: counters no longer use locks for the overflow mode.
362 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
363 incurred an off-by-one miscount.
364 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
365 * enhancement: improved DEFMETHOD pretty-printing.
366 * enhancement: perform range reduction when arguments are too large for
367 x87's transcendentals (instead of returning 0). (lp#327192)
368 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
369 some of CL-PPCRE's macros. (lp#570079)
370 * enhancement: our machine code is slightly less hostile to valgrind on
372 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
373 to Robert Swindells and Aleksej Saushev)
374 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
375 * bug fix: a rare case of startup-time page table corruption.
376 * bug fix: a semaphore with multiple waiters and some of them unwinding due
377 to timeouts could be left in an inconsistent state.
378 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
379 * bug fix: misoptimization of multiplication by one in
380 (SB-C::FLOAT-ACCURACY 0) policies.
381 * bug fix: miscounts in SB-PROFILE.
382 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
383 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
384 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
385 up itself" (March 2010) for further details.
386 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
387 against length of the list if the element is found before the specified
388 END is reached. (thanks to Alec Berryman, lp#554385)
389 * bug fix: errors signalled during package graph modification no longer
390 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
391 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
392 :SB-DOC feature. (lp#552564)
393 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
394 * bug fix: more robust runtime executable path detection. (lp#375549)
395 * bug fix: GCD always returns positive values. (lp#413680)
396 * bug fix: Converting division to multiplication by reciprocal handles
398 * bug fix: We were too eager in eliding range reduction tests on x87.
399 The maximal magnitude is 2^63, not 2^64.
400 * bug fix: Transforms for TRUNCATE don't die when the result is completely
402 * bug fix: Maybe restore buildability on Alpha.
403 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
405 * bug fix: RANDOM-STATE can be printed readably again.
406 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
407 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
408 types) could result in type mismatches during compilation.
410 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
411 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
412 stack frame thrown from.
413 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
414 compiler optimization qualities inside dynamic extent of its body.
415 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
416 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
418 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
419 constraint propgation, allowing better compilation eg. when used to
420 access structures with WITH-SLOTS. (lp#520366)
421 * optimization: the compiler is now more aware of the type of the underlying
422 storage vector for multidimensional simple arrays resulting in better code
423 for accessing such arrays.
424 * optimization: passing NIL as the environment argument to TYPEP no longer
425 inhibits optimizing it. (lp#309788)
426 * optimization: more efficient register usage when handling single-float
427 arguments on x86-64. (thanks to Lutz Euler)
428 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
429 pre-allocated temporary vectors. (lp#496249)
430 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
431 in :INITIAL-CONTENTS. (lp#523612)
432 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
433 functions. (lp#524707)
434 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
435 WITH-SLOTS usages during compilation.
436 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
437 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
438 all x86oid platforms with :UD2-BREAKPOINTS target feature.
439 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
440 instruction (tested on x86oid linux with ud2-breakpoints).
441 * bug fix: slam.sh now works on win32.
442 * bug fix: better differences of numeric types. (lp#309124)
443 * bug fix: arrays declared intersection and union types can have their
444 upgraded element type derived. (lp#316078)
445 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
446 threads started during profiling. (lp#472499)
447 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
449 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
450 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
451 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
452 values instead of signaling an error. (lp#309093)
453 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
455 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
456 declarations (lp#497321)
457 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
458 and failed to detect circular lists (lp#452008)
459 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
461 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
462 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
463 due to it, so that handlers can run.
464 * bug fix: reparsing undefined types if they have become defined since
466 * bug fix: missing &REST type in a proclamation for a function with both
467 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
468 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
469 expanded calls (lp#542174)
470 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
471 than just at toplevel form.
473 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
474 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
475 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
476 but work on type specifiers.
477 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
478 to name a type specifier.
479 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
480 specifier is valid where "valid" basically means "would be accepted as
481 second argument of TYPEP".
482 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
483 returns the function's declared, or derived FTYPE.
484 * new feature: SB-POSIX now supports accessing the d_ino member of
485 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
486 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
487 provide for seeding a RANDOM-STATE object with user-provided data or
488 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
489 attempt to initialize the returned state from the operating system's
490 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
491 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
492 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
493 * bug fix: Fix grammar and style issues for the docstrings of
494 printer-related variables and functions. (Thanks to mon_key; launchpad
496 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
498 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
499 in a row even though a handler defered the deadline long into the
501 * bug fix: A deadline handler was run without interrupts enabled for a
502 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
503 in infinitely spinning, non-killable threads.
504 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
505 before reaching the erring stack frame.
506 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
507 real power. (launchpad bug lp#525949)
508 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
509 GENCGC platforms. (launchpad bug lp#529014)
510 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
511 (launchpad bug lp#525916)
512 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
513 (Thanks to Robert Goldman)
515 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
516 * optimization: ROUND with a single single-float or double-float argument
517 is properly inlined when possible.
518 * optimization: Slightly better code is generated for integer<->float
519 conversions and for single-float<->double-float conversions on x86-64.
520 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
521 code for 32-bit and 64-bit rotations on x86-64.
522 * bug fix: The install script changes the ownership of directories as well
523 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
524 launchpad bug lp#508485)
525 * bug fix: TRUNCATE with a single single-float or double-float argument is
526 properly inlined when possible. (launchpad bug lp#489388)
527 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
528 no longer causes a compiler error on x86 and ppc.
529 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
530 always relative to *READTABLE* rather than the passed argument.
532 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
533 * minor incompatible change: threading support is now enabled by default
535 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
537 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
538 are now caught and reported just like errors during macroexpansion.
539 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
540 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
541 * enhancement: ASDF systems can now depends on SB-QUEUE.
542 * fixes and improvements related to Unicode and external formats:
543 ** bug fix: error handling and restart usage in the ucs-2 external format
545 ** there is now an implementation of the ucs-4 external format.
546 ** the utf-16 and utf-32 external formats are supported.
547 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
548 in the environment. setenv() and unsetenv() are also provided. (reported by
549 Fare Rideau; launchpad bug lp#460455)
550 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
551 loading. This ensures sensible errors for .FASL files from other
552 implementations on case-insensitive filesystems. (reported by Willem
553 Broekema; launchpad bug lp#489417)
554 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
555 Willem Broekema; launchpad bug lp#489698).
556 * bug fix: some minor code rearrangements to reenable warning-free building
557 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
558 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
560 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
563 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
564 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
565 * improvement: support O_LARGEFILE access to files larger than 2GB on
566 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
567 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
568 definitions for methods specializing on the passed class itself.
569 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
570 definitions for methods specializing on the passed class itself, or on
572 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
573 about itself during the build (e.g. for M-? in Slime), if this flag is
574 enabled in customize-target-features.lisp. This will increase the core
575 size by about 5-6mb, though, so it's mostly interesting to SBCL
577 * new feature: various GENCGC tuning parameters have been experimentally
578 documented and exported from SB-EXT. See documentation for details.
579 * fixes and improvements related to Unicode and external formats:
580 ** the Unicode character database has been upgraded to the
581 Unicode 5.2 standard, giving names and properties to a number of new
582 characters, and providing a few extra characters with case
584 ** improvement: restarts for providing replacement input/output on coding
585 errors for fd-stream external formats.
586 ** improvement: where :<encoding> is a keyword corresponding to an
587 external format the system supports, it is now possible to specify
588 (:<encoding> :replacement <character>) as an external format which will
589 automatically substitute <character> on encoding or decoding errors for
590 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
592 ** improvement: the file streams underlying the standard streams (such as
593 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
594 which uses the replacement mechanism to handle encoding errors,
595 preventing various infinite error chains and unrecoverable I/O
597 ** minor incompatible change: the utf-8 external format now correctly
598 refuses to encode Lisp characters in the surrogate range (char-codes
599 between #xd800 and #xdfff).
600 ** fix a typo preventing conversion of strings into octet vectors
601 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
603 ** fix a bug in the octet multibyte handling of decoding errors and the
604 USE-VALUE restart. (launchpad bug lp#314939)
605 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
606 restart on fd-stream decoding errors.
607 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
608 error is near the end of file.
609 ** fix a double-error case in unibyte octet conversions, when the first
610 use of USE-VALUE is ignored.
611 ** fix bugs in handling of undefined code points in unibyte encodings.
612 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
613 streams after an UNREAD-CHAR.
614 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
615 object is allocated in a boxed region of dynamic space.
616 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
617 fork with multiple Lisp threads running is made, instead of going
618 ahead with unpredictable consequences. (reported by Leslie Polzer)
619 * bug fix: uses of slot accessors on specialized method parameters within
620 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
621 error while finalizing the class. This fix may cause classes with slot
622 accessors to be finalized later than previously. (reported by Lars Rune
623 Nøstdal; launchpad bug lp#473699)
624 * bug fix: restore buildability on the MIPS platform. (regression from
625 1.0.30.38, reported by Samium Gromoff)
626 * bug fix: inspecting closures is less likely to fail with a type error.
627 * bug fix: no timer starvation when setting the system clock back.
628 (launchpad bug lp#460283)
629 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
630 standard pprint dispatch table as specified by CLHS.
631 * bug fix: give CLISP a hint about a type declaration to enable it to build
632 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
634 * bug fix: correctly dump literal objects in defaulting forms of arglists.
635 (reported by Attila Lendvai; launchpad bug lp#310132)
636 * bug fix: distinguish in type specifiers between arrays that might be
637 complex and arrays that are definitely complex. (launchpad bug lp#309129)
638 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
639 type. (reported by Levente Mészáros; launchpad bug lp#485972)
640 * bug fix: setting the value of a symbol-macro within a method in the
641 presence of type declarations works properly again. (reported by Iban
642 Hatchondo; launchpad bug lp#485019)
644 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
645 * optimization: faster FIND and POSITION on strings of unknown element type
646 in high SPEED policies. (thanks to Karol Swietlicki)
647 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
649 * improvement: better error signalling for bogus parameter specializer names
650 in DEFMETHOD forms (reported by Pluijzer)
651 * bug fix: DELETE-FILE once again works on logical pathnames (regression
653 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
655 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
656 removes previous default initargs (reported by Lars Rune Nøstdal and
658 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
659 lambda-lists. (reported by Peter Seibel)
660 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
661 correctly when starting from an executable core without saved runtime
662 options (reported by Faré Rideau, thanks to Zach Beane)
663 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
664 an optimization note instead. (reported by Martin Cracauer)
665 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
666 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
667 new process group if it doesn't need to share stdin with the sbcl
668 process. (thanks to Leslie Polzer)
669 * bug fix: SATISFIES could be misoptimized to refer to a local function.
670 (reported by Stanislaw Halik)
672 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
673 * improvement: stack allocation is should now be possible in all nested
674 inlining cases: failure to stack allocate when equivalent code is manually
675 open coded is now considered a bug.
676 * improvements related to Unicode:
677 ** the Unicode character database has been upgraded to the
678 Unicode 5.1 standard, giving names and properties to a number of new
679 characters, and providing a few extra characters with case
681 ** the system now recognizes and produces names for Unicode Hangul
683 ** the EBCDIC-US external-format is now supported for octet operations
684 (as well as for stream operations).
685 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
686 be used to output toplevel compile-time effects into a separate .CFASL
688 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
689 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
691 * optimization: TRUNCATE on known single- and double-floats is upto 25%
693 * optimization: division of floating point numbers by constants uses
694 multiplication by reciprocal when an exact reciprocal exists.
695 * optimization: multiplication of single- and double-floats floats by
696 constant two has been optimized.
697 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
698 sufficient type information is available. (thanks to Leslie Polzer)
699 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
700 known structure objects are as efficient as defstruct generated accessors.
701 * optimization: unused vector creation can now be optimized away.
702 * improvement: ASDF systems can now depends on SB-INTROSPECT.
703 * improvement: a STYLE-WARNING is signalled when a generic function
704 clobbers an earlier FTYPE proclamation.
705 * improvement: the compiler is able to track the effective type of
706 generic function across method addition and removal even in the
707 absence of an explicit DEFGENERIC.
708 * improvement: DESCRIBE now reports on symbols naming undefined
709 but assumed or declared function as well.
710 * improvement: recompilation of systems using SB-GROVEL now works
711 (thanks to Leslie Polzer)
712 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
713 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
715 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
716 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
717 well as user defined declaration names.
718 ** VARIABLE-INFORMATION is now aware of alien variables.
719 * improvement: improved address space layout on OpenBSD (thanks to Josh
721 * improvement: pretty-printing of various Lisp forms has been improved
722 (thanks to Tobias Rittweiler)
723 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
724 unused were deleted in safe code. (reported by John Fremlin)
725 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
727 * bug fix: some out-of-line array predicates were missing (reported by
729 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
731 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
732 (thanks to Larry D'Anna)
733 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
734 as well. (reported by Josh Elsasser)
735 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
736 leading to possible attempts to delete the same file twice. See docstring
737 on DELETE-FILE for details. (reported by John Fremlin)
738 * bug fix: DELETE-FILE once again deletes the file named by the pathname
739 designator argument, rather than its truename. (reported by Luis
741 * bug fix: the low-level debugger had 32-bit assumptions and was missing
742 information about some array types. (thanks to Luis Oliveira)
743 * bug fix: moderately complex combinations of inline expansions could
744 be miscompiled if the result was declared to be dynamic extent.
745 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
746 form (+ <variable> <integer>) were miscompiled under certain
748 * bug fix: in some cases no compiler note about failure to stack allocate
749 was emitted, even if the objects were in fact heap allocated.
750 * bug fix: minor violation of "otherwise inaccessible" rule for stack
751 allocation could cause objects users might reasonably expect to
752 be heap allocated to be stack allocated.
753 * bug fix: DESCRIBE signalled an error for generic functions under
754 certain circumstances. (thanks to Leslie Polzer)
755 * bug fix: Fixed spelling of an error message.
757 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
758 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
759 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
760 of SB-THREAD:THREAD-ERROR-THREAD.
761 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
762 * new feature: docstrings for local and anonymous functions are no longer
763 discarded. (thanks to Leslie Polzer)
764 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
765 values in other threads.
766 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
767 about object allocation.
768 * optimization: division of a real float by a complex float is implemented
769 with a specialised code sequence.
770 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
771 keywords is an order of magnitude faster.
772 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
773 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
774 methods, and similarly for non-standard metaclass classes as long as there
775 are no methods additional on MAKE-INSTANCE.
776 * optimization: more efficient type-checks for FIXNUMs when the value
777 is known to be a signed word on x86 and x86-64.
778 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
779 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
781 * optimization: compiler is smarter about delegating argument type checks to
783 * optimization: several character functions are now compiled somewhat more
784 efficiently. (reported by Lynn Quam)
785 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
786 * improvement: less unsafe constant folding in floating point arithmetic,
787 especially for mixed complex/real -float operations.
788 * optimization: constant double and single floats are stored in native
789 unboxed format on x86[-64].
790 * optimization: smarter code for arithmetic operations with constant floats,
791 complex floats, or integers on x86[-64].
792 * optimization: smarter code for conjugate/multiplication of float complexes
793 and abs/negate of floats on x86-64.
794 * optimization: more efficient complex float and real float operations on
796 * improvement: complex float division is slightly more stable.
797 * improvement: DESCRIBE output has been reworked to be easier to read and
798 contains more pertinent information.
799 * improvement: failure to provide requested stack allocation compiler notes
800 provided in all cases (requested stack allocation not happening without a
801 note being issued is now considered a bug.)
802 * bug fix: SB-POSIX exports the documented types and functions
803 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
804 types. (reported by "abhi")
805 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
806 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
807 (thanks to Paul Khuong)
808 * bug fix: looping around HANDLER-CASE could silently consume stack space
809 on each iteration. (reported by "foobar")
810 * bug fix: better error signalling when calls to functions seeking elements
811 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
812 (reported by Tobias Rittweiler)
813 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
814 directory components now works as it used to. (various prolems reported by
815 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
816 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
817 (reported by Elliot Slaughter, thanks to Stas Boukarev)
818 * bug fix: bogus undefined variable warnings from fopcompiled references to
819 global variables. (thanks to Lars Rune Nøstdal)
820 * bug fix: foreign function names should now appear in backtraces on
821 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
822 * bug fix: SETF compiler macro documentation strings are not discarded
824 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
825 (thanks to Alex Plotnick)
826 * bug fix: SLEEP accepts large integer arguments, truncating them to
827 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
828 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
829 * bug fix: compiler notes for expensive slot type checks could be emitted
830 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
832 changes in sbcl-1.0.29 relative to 1.0.28:
833 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
834 https://bugs.launchpad.net/sbcl
835 Bugs can be reported directly there, or by sending email to
836 sbcl-bugs@lists.sourceforge.net
837 (no subscription required.)
838 * minor incompatible change: under weak type checking policy integer
839 types are weakened less aggressively.
840 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
841 allowed to return, which causes SBCL to quit with exit status 0. Previously
842 if the function returned with a small integer return value, that value
843 was accidentally reused as the exit status.
844 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
845 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
846 :HASH-FUNCTION argument. Refer to user manual for details.
847 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
849 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
850 microseconds since the Unix epoch on all platforms.
851 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
852 allows the compiler to safely elide boundedness checks for special
854 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
855 the symbol, prohibits both lexical and dynamic binding. This is mainly an
856 efficiency measure for threaded platforms, but also valueable in
858 * new feature: UNC pathnames are now understood by the system on Windows.
859 * optimization: the compiler uses a specialized version of FILL when the
860 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
862 * optimization: accesses to potentially non-simple arrays where element type
863 is known are 50% faster.
864 * optimization: compiler now generates faster array typechecking code.
865 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
867 * optimization: multidimensional array accesses in the absence of type
868 information regarding array rank are approximately 10% faster due to
869 open coding of ARRAY-RANK.
870 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
871 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
873 * optimization: result of call to VECTOR can now be stack allocated.
874 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
875 as long as the resulting array is one-dimensional and has a known
876 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
877 length of the list matches the known length of the vector does not
878 allocate the list as an intermediate step. Ditto for VECTOR and simple
880 * optimization: MAKE-ARRAY can now stack allocate in the presence of
881 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
882 known element type, and is known to be simple and one dimensional.
883 * improvement: SBCL now emits a compiler note where stack allocation was
884 requested but could not be provided (not in all cases, unfortunately)
885 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
886 * improvement: pretty-printing loop has been implemented properly. (thanks
887 to Tobias Rittweiler)
888 * documentation: CLOS slot typechecing policy has been documented.
889 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
890 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
891 pointer, leading to memory faults. (thanks to Bart Botta)
892 * bug fix: better floating point exception handling on x86/OpenBSD.
893 (thanks to Josh Elsasser)
894 * bug fix: exit status from QUIT when called under --script was lost
895 (reported by Hubert Kauker)
896 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
897 same implementation of FILL to initialize the array, even if a more
898 efficient one was available (reported by Stas Boukarev, thanks to
900 * bug fix: potential miscompilation of array stack allocation on x86 and
901 x86-64. (reported by Time Tossavainen)
902 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
903 result in their subforms being treated as top level forms. (reported by
905 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
906 than a machine register could leave garbage in the high bits of the
907 result register (bug 316325).
908 * bug fix: disable address space randomization Linux/x86-64 as well,
909 not just x86-64. (reported by Ken Olum)
910 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
911 generate incorrect code.
912 * bug fix: #201; type inference for CONS and ARRAY types could derive
913 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
914 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
915 could not be assigned to or bound with PROGV. (reported by Lorenz
917 * bug fix: the value of CL:- in the inspector was the previous expression
918 evaluated rather than the expression being evaluated.
919 * bug fix: constants can no longer be locally declared special.
920 * bug fix: signals delivered to threads started from foreign land (read:
921 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
922 thread by blocking all signals and resignalling.
923 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
924 from :INITFORM, if any.
926 changes in sbcl-1.0.28 relative to 1.0.27:
927 * a number of bugs in cross-compilation have been fixed, with the ultimate
928 result that building under (at least) clisp should be much more reliable.
929 * minor incompatible changes: echo-streams now propagate unread-char to the
930 underlying input stream, and no longer permit unreading more than one
932 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
933 frames, allowing for instance more reliable backtraces.
934 * improvement: the debugger REPL can now reference lexical variables
935 by name directly for code compiled with (DEBUG 3).
936 * improvement: errors from malformed declarations now have better source
937 paths associated with them. (thanks to Tobias Rittweiler)
938 * optimization: faster local calls on x86/x86-64
939 * bug fix: some error messages for out-of-bound array indexes confused the
940 index and the bound. (thanks to Stas Boukarev)
941 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
943 * bug fix: running regressions tests in shells without OSTYPE set now works.
944 (reported by Harald Hanche-Olsen)
945 * bug fix: more robust static space exhaustion signalling from
946 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
947 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
948 docstring away instead of storing it under names such as (LAMBDA (X)).
949 (reported by Leslie Polzer)
950 * bug fix: timers could go off in the wrong order, be delayed indefinitely
951 (thanks to Ole Arndt for the patch)
952 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
953 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
954 potentially-invalid effective methods in its cache.
955 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
956 instances as well (thanks to Paul Khuong)
957 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
958 SB-POSIX:WAITPID and their C equivalents.
959 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
961 changes in sbcl-1.0.27 relative to 1.0.26:
962 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
963 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
964 * improvement: the system either recovers from stack exhaustion or dies
965 properly as opposed to leaving the user uncertain of whether the handler
966 trampled on some random memory next to the stack or having to rely on
967 --lose-on-corruption (which is still a good idea to use in production
968 because stack exhaustion can happen in signal handlers which will likely
970 * bug fix: fix gc related interrupt handling bug on ppc (regression from
971 1.0.25.37, reported by Harald Hanche-Olsen)
972 * bug fix: work around signal delivery bug in darwin (regression from
973 1.0.25.44, reported by Sidney Markowitz)
974 * bug fix: fix ERROR leaking memory (reported by David Thompson)
976 changes in sbcl-1.0.26 relative to 1.0.25:
977 * incompatible change: an interruption (be it a function passed to
978 INTERRUPT-THREAD or a timer function) runs in an environment where
979 interrupts can be enabled. The interruption can use
980 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
981 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
982 potentially running out of stack. Keep in mind that in the absence
983 of WITHOUT-INTERRUPTS some potentially blocking operation such as
984 acquiring a lock can enable interrupts.
985 * incompatible change: GC-OFF and GC-ON are removed, as they were
986 always unsafe. Use WITHOUT-GCING instead.
987 * new feature: runtime option --disable-ldb
988 * new feature: runtime option --lose-on-corruption to die at the
989 slightest hint of possibly non-recoverable errors: running out of
990 memory, stack, alien stack, binding stack, encountering a memory
991 fault, etc. In the absence of --lose-on-corruption a warning is
993 * enhancement: detect binding stack exhaustion
994 * enhancement: detect alien stack exhaustion on x86/x86-64
995 * improvement: generally more stable and reliable interrupt handling
996 * improvement: there is a per thread interruption queue,
997 interruptions are executed in order of arrival
998 * improvement: a repeating timer reschedules itself when the it has
999 finished, but expiration times are spaced equally. If an
1000 expiration time is in the past it will trigger after a short grace
1001 period that may give a chance to other things to run.
1002 * optimization: slightly faster gc on multithreaded builds
1003 * optimization: faster WITHOUT-GCING
1004 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1005 important locks so that the debugger/handler doesn't produce
1006 recursive errors or deadlock.
1007 * bug fix: real-time signals are not used anymore, so no more
1008 hanging when the system wide real-time signal queue gets full.
1009 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1011 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1012 * bug fix: fix random memory faults related to interrupts on alpha
1013 * bug fix: fix random memory faults related to interrupts on sparc
1014 * bug fix: fix deadlocks related to starting threads
1015 * bug fix: fix deadlines on locks on futex platforms
1016 * bug fix: restore errno in signal handlers
1017 * bug fix: fix deadlocks related to hash tables
1018 * bug fix: fix deadlocks in pcl
1020 changes in sbcl-1.0.25 relative to 1.0.24:
1021 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1022 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1023 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1024 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1025 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1026 better name and does not return values so stale on multiprocessor systems.
1027 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1029 * improvement: unithread builds keep track of MUTEX-VALUE.
1030 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1031 stream anymore making it thread safe to have a concurrent reader and
1032 a writer, for instance, in a pipe.
1033 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1034 arguments, making compiler-macros for SETF-functions able to inspect
1035 their constant arguments.
1036 * improvement: COMPILE-FILE reports times with millisecond accuracy
1037 (thanks to Luis Oliveira)
1038 * optimization: CHAR-CODE type derivation has been improved, making
1039 TYPEP elimination on subtypes of CHARACTER work better. (reported
1040 by Tobias Rittweiler, patch by Paul Khuong)
1041 * bug fix: setting alien structure fields of type struct by value now
1042 computes the right offset for the memory copy.
1043 * bug fix: compilation problem involving inlined calls to aliens with
1044 result type VOID. (reported by Ken Olum)
1045 * bug fix: #235a; sequential inline expasion in different policies no
1046 longer reuses the functional from the previous expansion site.
1047 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1048 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1049 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1050 cause an implied type redefinition. Regression from 1.0.21.29.
1051 * bug fix: sign-extension of small signed return values now works with C
1052 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1053 * improvements to the Windows port:
1054 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1055 Westfold, thanks to Rudi Schlatte)
1057 changes in sbcl-1.0.24 relative to 1.0.23:
1058 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1059 vector of a multidimensional SIMPLE-ARRAY.
1060 * new feature: the system now signals a continuable error if standard
1061 readtable modification is attempted. (thanks to Tobias Rittweiler)
1062 * new feature: DIRECTORY has been extended with a non-standard keyword
1063 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1064 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1065 has been robustified and documented better. (thanks to Robert Goldman)
1066 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1067 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1068 * tradeoff: constant FORMAT control strings are now compiled unless
1069 SPACE > SPEED (previously only when SPEED > SPACE.)
1070 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1072 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1074 * bug fix: lexical type declarations are now correctly reported by
1075 SB-CLTL2. (reported by Larry D'Anna)
1076 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1077 using UTF-8 as external format. (thanks to Luis Oliveira)
1078 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1079 are signalled correctly. (thanks to Stas Boukarev)
1080 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1081 designator. (thanks to Tobias Rittweiler)
1082 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1083 designator, and returns T instead of the function. (thanks to
1085 * bug fix: direct superclasses of STANDARD-CLASS and
1086 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1087 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1088 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1089 when no class with the named slot yet exists no longer causes a
1090 compile-time style-warning.
1091 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1092 in safe code. (reported by Didier Verna)
1093 * bug fix: #430; nested structure constructors can stack allocate.
1094 * bug fix: on some 64-bit platforms dynamic space size was truncated
1095 to #xffff0000 bytes. (reported by Benjamin Lambert)
1096 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1097 REPL unusable. (reported by Daniel Herring)
1098 * bug fix: return values of READ-SEQUENCE did not take :START into
1099 account on file streams, regressions since 1.0.12.22. (reported by
1100 Thomas Russ, patch by Paul Khuong)
1101 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1102 method specializer used to confuse permuation vector optimization.
1103 * bug fix: system inserted bogus implicit type declarations for local
1104 special variables in DEFMETHOD bodies.
1105 * bug fix: #354; duplicated frames in backtraces due to
1106 non-tail-call-optimized XEPs to functions with return type NIL
1108 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1109 initializes structure object slots according to DEFSTRUCT initforms,
1110 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1111 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1112 (reported by Bruno Haible and Stephen Wilson)
1113 * bug fix: #395; fill-pointer output streams used now support
1114 element-type BASE-CHAR as well.
1115 * bug fix: compiler error when attempting to derive return value of
1116 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1118 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1120 * bug fix: Mac OS X binaries should now be portable between Leopard
1123 changes in sbcl-1.0.23 relative to 1.0.22:
1124 * enhancement: when disassembling method functions, disassembly
1125 for the associated fast function is also produced.
1126 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1128 * optimization: printing with *PRINT-PRETTY* true is now more
1129 efficient as long as the object being printed doesn't require
1130 special handling by the pretty printer.
1131 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1132 now interact correctly with type declarations.
1133 * partial bug fix: PCL detects infinite recursion during wrapper
1134 validation. (thanks to Attila Lendvai)
1135 * bug fix: #426; nested function calls are inlined properly.
1136 Previously if FOO was an inline function, in calls of the form
1137 (FOO (FOO ...)) the outer call was not inlined.
1138 * bug fix: long long arguments passed in registers to alien
1139 functions on PowerPC Linux and NetBSD are now handled correctly
1140 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1142 changes in sbcl-1.0.22 relative to 1.0.21:
1143 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1144 for the shared object in the current directory, but passes the native
1145 namestring of the designated pathname to the operation system's shared
1146 object loading function as-it.
1147 * minor incompatible change: --disable-debugger toplevel option now takes
1148 effect before processing of initialization files and --eval or --load
1150 * new feature: new commandline argument: --script, which supports
1151 shebang lines. See documentation for details. (based on work by
1153 * new feature: SAVE-LISP-AND-DIE can save current values of
1154 --dynamic-space-size and --control-stack-size in the executable core,
1155 causing it to skip normal runtime option processing. See documentation
1156 for details. (thanks to Zach Beane)
1157 * enhancement: inoccous calls to EVAL or generic functions dispatching
1158 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1159 * enhancement: the system no longer resignals errors from --load and
1160 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1161 associated with the original error to be lost. (thanks to Ariel
1163 * enhancement: :DONT-SAVE keyword argument has been added to
1164 LOAD-SHARED-OBJECT for controlling interaction with
1165 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1166 the effects of an earlier LOAD-SHARED-OBJECT call.
1167 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1168 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1169 provided. (reported by Cedric St-Jean)
1170 * bug fix: circularity handling in the reader did not treat raw
1171 structure slots correctly. (reported by Cedric St-Jean)
1172 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1173 file descriptors when there were none.
1174 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1175 was broken. (reporteed by Willem Broekema)
1176 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1177 pathnames without a directory.
1178 * bug fix: COMPILE-FILE did not warn about undefined variable
1179 references at toplevel, and LOAD of the resulting fasl did
1180 not signal an error.
1181 * bug fix: functions with non-required arguments used to end up with
1182 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1183 * bug fix: redefining a function with non-required arguments didn't
1184 update the system's knowledge about its call signature properly.
1185 * bug fix: fixed #431; incompatible alien record type redefinitions
1186 are detected and handled. (reported by Neil Haven)
1187 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1188 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1190 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1191 after alien stack frames.
1192 * bug fix: strings passed to mk{s,d}temp lacked null termination
1194 changes in sbcl-1.0.21 relative to 1.0.20:
1195 * new feature: the compiler is able to track the effective type of a
1196 generic function across method addition and removal.
1197 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1198 appropriately typed structure slots without locking.
1199 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1200 information like those gathered by TIME using a programming-friendly
1202 * new feature: TIME reports time taken even if the form performs a
1203 non-local transfer of control.
1204 * enhancement: reduced conservativism on GENCGC platforms: on
1205 average 45% less pages pinned (measured from SBCL self build).
1206 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1207 mutate constant symbols or violate declaimed type of the symbol.
1208 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1209 sleeping on the semaphore in heavily contested semaphores.
1210 * bug fix: semaphores and condition variables were not interrupt
1212 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1213 owned by other threads anymore.
1214 * bug fix: FIND on lists called KEY outside the specified
1215 subsequence. (reported by budden)
1216 * bug fix: LOG doesn't use single-float intermediate results when
1217 given mixed integer and double-float arguments, leading to better
1218 precision. (reported by Bob Felts)
1219 * bug fix: LOG with base zero returned values of inconsistent type.
1221 changes in sbcl-1.0.20 relative to 1.0.19:
1222 * minor incompatible change: OPTIMIZE qualities
1223 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1224 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1225 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1226 * documentation: some slot access efficiency guidelines have been
1227 added to the user manual.
1228 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1229 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1230 as ASSOC and MEMEBER.
1231 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1232 to more efficient EQ-comparison versions more often.
1233 * optimization: enhanced derivation of DOLIST iteration variable type
1235 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1237 * optimization: runtime lookup of function definitions can be
1238 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1239 * optimization: compiler is able to derive the return type of
1240 (AREF (THE STRING X) Y) as being CHARACTER.
1241 * optimization: CLRHASH on empty hash-tables no longer does pointless
1242 work. (thanks to Alec Berryman)
1243 * optimization: REPLACE deftransforms don't punt when :START1 or
1245 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1246 no longer emits a code deletion note. (reported by Andrew
1248 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1249 functions with an odd number of &OPTIONAL arguments, a &REST
1250 argument, and one or more &KEY arguments at the call site.
1251 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1252 arguments appeared at call sites as well.
1253 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1254 READ-LINE &co can no longer read from them afterwards. (reported
1256 * bug fix: fixed #427: unused local aliens no longer cause compiler
1257 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1259 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1260 alien-stack leakage. (reported by Andy Hefner)
1261 * bug fix: PROGV signals an error when an attempt to violate declared
1262 type of a variable or bind a constant is made.
1263 * bug fix: SET signals an error when an attempt to violate declared
1264 type of a variable is made.
1265 * bug fix: restart computation during the execution of a restart
1266 test function no longer causes infinite recursion. (reported by
1268 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1269 signals an error. (thanks to Pierre Mai)
1270 * bug fix: EXPORT left symbol unexported in conflict situations.
1271 (thanks to Michael Weber)
1272 * bug fix: correctly handle name conflicts involving CL:NIL.
1273 (thanks to Michael Weber)
1274 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1275 conflicts arising from USEing package with conflicting symbols
1276 correctly. (thanks to Michael Weber)
1278 changes in sbcl-1.0.19 relative to 1.0.18:
1279 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1280 warnings that go otherwise unhandled will be muffled if they are
1281 of the type that's the value of this variable.
1282 * optimization: stack allocation is slightly more efficient on x86
1284 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1285 where a raw slot always is initialized using the initform whose
1286 type is not know sufficiently well a compile-time are now compiled
1287 correctly. (reported by John Morrison)
1288 * bug fix: compiler no longer makes erronous assumptions in the
1289 presence of non-foldable SATISFIES types.
1290 * bug fix: stack analysis missed cleanups of dynamic-extent
1291 arguments in non-let-converted calls to local functions.
1292 * improvements to the Windows port:
1293 ** adjusted address spaces for building on both Win32 and
1294 Win64. (thanks for John Connors)
1295 * fixed some bugs revealed by Paul Dietz' test suite:
1296 ** interval arithmetic during type derivation used inexact integer
1297 to single-float coercions.
1298 ** arithmetic operations involving large integers and single
1299 floats give the same results in compiled and interpreted code.
1300 ** deriving the result type of COERCE no longer signals an error
1301 if the derived type of the second argument is a MEMBER type
1302 containing invalid type specifiers.
1303 ** ADJOIN with constant NIL as second argument works correctly.
1304 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1306 changes in sbcl-1.0.18 relative to 1.0.17:
1307 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1308 profiles only the current thread.
1309 * minor incompatible change: changes to SYMBOL-VALUE of constants
1310 defined with DEFCONSTANT now signal an error.
1311 * enhancement: SB-SPROF now has support for wallclock profiling,
1312 and is also able to profile specific threads. REPORT output
1313 has also additional sorting options.
1314 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1316 * optimization: structure allocation has been improved
1317 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1318 ** out of line constructors are ~10% faster.
1319 ** inline constructors are ~15% faster.
1320 ** inline constructors are capable of dynamic extent allocation
1321 (generally on x86 and x86-64, in some cases on other platforms
1323 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1325 * optimization: file compiler is now able to coalesce non-circular
1326 lists, non-base strings, and bit-vectors. Additionally, constants
1327 are never referenced through SYMBOL-VALUE at runtime.
1328 * optimization: code defining methods on PRINT-OBJECT (and other
1329 generic functions in the COMMON-LISP package) now loads faster.
1330 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1332 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1333 fasl is now deleted. (reported by Attila Lendvai)
1334 * bug fix: READ-LINE always returned NIL for the last line in files.
1335 (reported by Yoshinori Tahara)
1336 * bug fix: more accurate disassembly annotations of foreign function
1337 calls. (thanks to Andy Hefner)
1338 * bug fix: trimming non-simple strings and non-string string
1339 designators when the there is nothing to trim works properly.
1340 (thanks to James Knight)
1341 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1342 (thanks to Travis Cross)
1343 * fixed some bugs revealed by Paul Dietz' test suite:
1344 ** NIL is a valid function name (regression at 1.0.13.38)
1345 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1346 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1347 fill pointers properly (regression at 1.0.12.23)
1348 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1349 displacement indices properly (regression at 1.0.12.23)
1351 changes in sbcl-1.0.17 relative to 1.0.16:
1352 * temporary regression: user code can no longer allocate closure
1353 variable storage on stack, due to bug 419 without explicitly
1354 requesting it. Please consult sbcl-devel for advice if you need to
1355 use this feature in the meanwhile.
1356 * new feature: runtime argument --control-stack-size can be used to
1357 adjust thread default control stack size.
1358 * enhancement: improved TIME output
1359 ** all times are reported using the measured accuracy (milliseconds
1360 for real and GC times, microseconds for everything else.)
1361 ** processor cycle counts on x86 and x86-64.
1362 ** interpreted forms are counted for both evaluator modes.
1363 ** number of lambdas converted by the compiler is reported.
1364 ** CPU percentage report (computed from real and total run time.)
1365 ** more comprehensive run time reporting, using a condenced format
1366 ** interperted form, lambda, and page fault counts are omitted
1368 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1370 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1371 * optimization: two argument forms of LAST are upto ~10% faster
1372 in normal SPEED policies.
1373 * optimization: NCONC no longer needs to heap cons its &REST list
1374 in normal SPEED policies.
1375 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1376 to Sidney Markowitz)
1377 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1378 regression since 1.0.9.1. (thanks to Eric Marsden)
1379 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1380 since 1.0.15.36. (thanks to Paul Khuong)
1381 * bug fix: LAST when always returned the whole list when given a bignum
1382 as the second argument.
1383 * bug fix: dynamic extent allocation of nested lists and vectors
1384 could leak to otherwise accessible parts.
1385 * bug fix: invalid optimization of heap-allocated alien variable
1387 * bug fix: fasl header checking is less vulnerable to different
1388 platform word lengths.
1389 * bug fix: more correct assembler syntax for GNU binutils
1390 2.18.50.0.4 support. (thanks to Marijn Schouten)
1391 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1393 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1394 declarations) successfully. (reported by Attila Lendvai)
1396 changes in sbcl-1.0.16 relative to 1.0.15:
1397 * minor incompatible change: revert the changes to sb-posix's error
1398 signaling added in 1.0.14.
1399 * minor incompatible change: change PROBE-FILE back to returning
1400 NIL whenever we can't get a truename, as was the case before 1.0.14.
1401 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1402 inherits from ERROR instead of just CONDITION.
1403 * new feature: SB-INTROSPECT can provide source locations for instances
1404 as well. (thanks to Tobias Rittweiler)
1405 * optimization: binding special variables now generates smaller code
1406 on threaded platforms.
1407 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1408 and cases where no :TEST is given but the compiler can infer that
1409 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1410 * optimization: better LOGNOT on fixnums.
1411 * optimization: modular arithmetic for a particular requested width
1412 is implemented using a tagged representation unless a better
1413 representation is available.
1414 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1415 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1416 for wellformedness and returns a specialized vector. (reported by
1417 Francois-Rene Rideau)
1418 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1419 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1420 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1421 unscheduling timer at the same time as another timer fires.
1422 * bug fix: don't reschedule timers for dead threads.
1423 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1424 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1425 bogus errors if select() was interrupted.
1426 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1428 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1429 * enhancement: cleaner backtraces for interactive interrupts, as
1430 well as other cases where the interesting frames used to be
1431 obscured by interrupt handling frames.
1432 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1433 now supported, and tracing a whole package using (TRACE "FOO") now
1434 traces SETF-functions as well.
1435 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1436 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1437 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1438 * unreadably printed representation of hash-tables now includes
1440 * bug fix: partially fixed #188: type propagation from assignments
1441 is now more efficient.
1442 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1443 'DOUBLE-FLOAT) are not flushable.
1444 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1445 full address of the object, and none of the tag bits.
1446 * bug fix: readably printing hash-tables now respects other printer
1447 control variables. (reported by Cedric St-Jean)
1448 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1449 keyword with MAKE-HASH-TABLE.
1450 * bug fix: export SB-POSIX:MKSTEMP.
1451 * bug fix: SORT was not interrupt safe.
1452 * bug fix: XREF accounts for the last node of each basic-block as
1454 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1455 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1456 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1457 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1458 create obsolete instances in the case of redefinition or
1459 obsoletion of a superclass. (thanks to Andy Hefner)
1460 * bug fix: Support for the Alpha architecture has been revived; it had
1461 suffered somewhat from lack of maintenance since sbcl-1.0.
1462 * improvements to the Windows port:
1463 ** The system detects the codepage to use at startup, instead of
1464 using the value from the saved core. (thanks to Kei Suzuki)
1466 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1467 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1468 (see documentation for details.)
1469 * revived support for OpenBSD (contributed by Josh Elsasser)
1470 * partially fixed bug #108: ROOM no longer suffers from occasional
1471 (AVER (SAP= CURRENT END)) failures.
1472 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1473 bodies no longer cause a WARNING to be signalled. (reported by
1475 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1476 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1477 the bug in TRUNCATE.) (reported by Michael Weber)
1478 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1479 no samples. (reported by Andy Hefner)
1480 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1481 no longer appear as (NIL ...) frames in backtraces.
1482 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1483 is now actually exported from SB-EXT as documented. (reported by
1485 * bug fix: sb-aclrepl now correctly understands how to inspect
1486 single-floats on 64-bit platforms where single-floats are not boxed.
1487 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1488 yet been finalized. (reported by Levente Meszaros)
1489 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1490 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1491 SBCL-specific optimize qualities.
1493 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1494 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1495 an executable in the search path, and does so in the child
1496 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1497 been removed; it can be found in the CVS history, for somebody who
1498 needs that search behavior (see the manual).
1499 * minor incompatible change: compiler policy re. weakening type
1500 checks has changed: now type checks are weakened only if SAFETY < 2
1502 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1503 unparsing of directory pathnames as files. Analogously,
1504 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1505 filename to parse into a directory pathname.
1506 * enhancement: implicit generic function creation now signals a
1507 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1508 users can bind handlers for and muffle around calls to LOAD.
1509 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1510 to be used (using the default stream external format), and allows
1511 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1512 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1513 strings and vectors whose element-type or simplicity is not fully
1514 known at compile-time.
1515 * optimization: STRING-TRIM and related functions no longer allocate
1516 a new string when no trimming needs to be performed. These functions
1517 are also faster than before when the input string has been declared
1519 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1520 * optimization: READ-LINE is significantly faster for files containing
1522 * optimization: non-open coded uses of character comparison operators
1523 (e.g. char=) no longer cons when called with more than one parameter
1524 on platforms supporting dynamic-extent allocation.
1525 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1526 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1527 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1529 * bug fix: some sequence functions elided bounds checking when
1531 * bug fix: too liberal weakening of union-type checks when SPEED >
1533 * bug fix: more bogus fixnum declarations in ROOM implementation
1536 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1537 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1538 :SYNCHRONIZED argument, which makes the hash-table safe for
1539 concurrent accesses (but not iteration.) See also:
1540 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1541 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1542 * optimization: CONCATENATE on strings is an order of magnitude faster
1543 in code compiled with (> SPEED SPACE).
1544 * optimization: SUBSEQ is ~50% faster on lists.
1545 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1546 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1547 END is smaller then START.
1548 * bug fix: SB-PROFILE will no longer report extra consing for nested
1549 calls to profiled functions.
1550 * bug fix: ROOM implementation had bogus fixnum declarations which
1551 could cause type-errors when calling ROOM on large images.
1552 * bug fix: if file compilation is aborted, the partial fasl is now
1553 deleted, and COMPILE-FILE returns NIL as the primary value.
1554 * bug fix: number of thread safety issues relating to SBCL's internal
1555 hash-table usage have been fixed.
1556 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1557 be returned from its body when the values were being returned
1558 using unknown-values return convection and the W-P-O was wrapped
1559 inside an UNWIND-PROTECT.
1560 * bug fix: sb-posix should now compile again under Windows, enabling
1561 slime to work again.
1563 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1564 * incompatible change: hash-table accessor functions are no longer
1565 automatically protected by locks. Concurrent accesses on the same hash-table
1566 from multiple threads can give inconsistent results or even corrupt the
1567 hash-table completely. Multi-threaded applications should do their own
1568 locking at the correct granularity. In the current implementation it is
1569 still safe to have multiple readers access the same table, but it's not
1570 guaranteed that this property will be maintained in future releases.
1571 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1572 and will signal an error at runtime.
1573 * enhancement: SB-THREAD package now exports a semaphore interface.
1574 * enhancement: CONS can now stack-allocate on x86 and
1575 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1577 * enhancement: nested lists can now be stack allocated on
1578 platforms providing stack allocation support.
1579 * enhancement: dynamic-extent support has been extended to support
1580 cases where there are multiple possible sources for the stack
1582 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1583 if the mutex is uncontested on Linux.
1584 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1585 as specified by the CLHS. (thanks to Tobias Rittweiler)
1586 * bug fix: NaN comparison now works on x86-64.
1587 * bug fix: CLOSE :ABORT T on a stream with pending output now
1589 * bug fix: instances of non-standard metaclasses using standard
1590 instance structure protocol sometimes missed the slot type checks
1592 * bug fix: known functions can be inlined in high-debug code.
1594 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1595 * minor incompatible change: the MSI installer on Windows no longer
1596 associates .lisp and .fasl files with the installed SBCL.
1597 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1598 on Windows. (thanks to Luis Oliviera)
1599 * new feature: SB-CLTL2 contrib module now implements
1600 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1601 * optimization: scavenging weak pointers is now more efficient,
1602 requiring O(1) instead of O(N) per weak pointer to identify
1603 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1604 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1605 method bodies using constant slot-names when the first argument is
1606 a specializer parameter for the method.
1607 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1608 names, when the class of the instance is a direct instance
1609 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1610 as slow as the constant slot-name case.)
1611 * optimization: member type construction is now O(N) instead
1613 * optimization: UNION and NUNION are now O(N+M) for large
1614 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1616 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1617 now more readable in environments like Slime which display it.
1618 (thanks to Tobias C. Rittweiler)
1619 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1620 was able to infer the correct argument type for the object on which
1621 the CAS operation was being performed.
1622 * bug fix: copy propagation interfered with parallel assignment
1623 semantics in local calls. (reported by Paul Khuong)
1624 * bug fix: the signed modular fixnum shift compiled to wrong code on
1625 x86 and x86-64. (spotted by a slight modification to some of
1628 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1629 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1630 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1631 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1633 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1634 and generic function now print the object identity for anonymous
1635 instances. (thanks to Attila Lendvai)
1636 * enhancement: as an extension to MOP, SBCL now supports SETF of
1637 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1638 (thanks to Attila Lendvai)
1639 * enhancement: sb-cover has an alternate annotation mode which puts
1640 the form annotations at the car of the form, instead of annotating
1641 it completely. The benefit of this mode is that it shows better
1642 which forms were instrumented by the compiler.
1643 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1644 by printer control variables. (reported by Dan Corkill)
1645 * bug fix: system leaked memory when delayed output was performed by
1646 the OS in smaller chunks then expected. (thanks to David Smith)
1647 * bug fix: system leaked memory when file streams were not closed
1649 * bug fix: large objects written to slow streams that were modified
1650 after the write could end up with the modified state written to
1651 the underlying file descriptor.
1652 * bug fix: multiple threads operating in parallel on the same stream
1653 could cause buffer-overflows.
1654 * bug fix: source location information is stored correctly
1655 (broken since 1.0.6). This bug would generally show up as the
1656 Slime debugger highlighting the wrong form when the sldb-show-source
1658 * bug fix: Branch forms are again annotated as branches in the sb-cover
1660 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1661 on x86-64. (reported by Gregory Vanuxem)
1662 * bug fix: EQUALP could return wrong results for structures with raw
1663 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1664 word). (reported by Vjacheslav Fyodorov)
1665 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1668 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1669 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1670 atomic compare-and-swap operations on threaded platforms.
1671 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1672 allows assigning a global minimum value to optimization qualities
1673 (overriding proclamations and declarations).
1674 * enhancement: closed over variables can be stack-allocated on x86
1676 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1678 * optimization: slot definition lookup is now O(1). This speeds up
1679 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1680 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1681 * optimization: ASSOC and MEMBER can now be open-coded for all
1682 combinations of keyword arguments when second argument is constant
1683 and SPEED >= SPACE. In other cases a specialized version is
1685 * bug fix: using obsoleted structure instances with TYPEP and
1686 generic functions now signals a sensible error.
1687 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1688 (reported by Kristoffer Kvello)
1689 * bug fix: backtrace construction is now more careful when making
1690 lisp-objects from pointers on the stack, to avoid creating bogus
1691 objects that can be seen by the GC.
1692 * bug fix: defaulting of values in contexts expecting more than 7
1693 variables now works on x86-64. (reported by Christopher Laux)
1694 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1696 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1697 as the property-list of a symbol.
1698 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1699 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1700 situations requested, are once again file-compileable. (reported
1703 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1704 * MOP improvement: support for user-defined subclasses of
1705 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1706 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1707 the expansion of DEFMETHOD, is responsible for generating a form
1708 which creates a list of specializers when evaluated. Additional
1709 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1710 debugging and introspective support.
1711 * minor incompatible change: the (unsupported) spinlock interface
1712 has changed: free spinlock now has the value NIL, and a held spinlock
1713 has the owning thread as its value.
1714 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1715 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1717 * enhancement: name of a socket-stream is now "a socket" instead of
1718 "a constant string".
1719 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1720 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1721 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1722 for generic functions. (Thanks to Tobias C. Rittweiler)
1723 * optimization: bignum printing speed has been improved by 20-40%
1724 (depending on the bignum size.)
1725 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1727 * bug fix: the cache used by the CLOS to store precomputed effective
1728 methods, slot offsets, and constant return values is now thread and
1730 * bug fix: generic function dispatch function updating is now thread
1731 and interrupt safe (in the sense that the known issues have been
1733 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1734 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1735 * bug fix: asdf systems with dependencies to the SB-POSIX or
1736 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1737 * bug fix: interrupt safety of applicable method computation has been
1740 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1741 * new contrib: sb-cover, an experimental code coverage tool, is included
1742 as a contrib module.
1743 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1744 significantly faster.
1745 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1746 produce more efficient code on x86-64 if the compiler can determine
1747 that (+ INDEX <constant>) does not require a bounds check and FOO
1748 has an element type at least 8 bits wide.
1749 * enhancement: a new, experimental synchronous timeout facility is
1750 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1751 * enhancement: when a symbol name conflict error arises, the
1752 conflicting symbols are always printed with a package prefix.
1753 (thanks to Kevin Reid)
1754 * enhancement: stepping is now once again supported on the SPARC and
1755 MIPS platforms. (It is also now more likely to work on CheneyGC
1757 * enhancement: sb-sprof can now also track and report accurate call
1759 * bug fixes: the treatment of non-standard subclasses of
1760 SB-MOP:SPECIALIZER is more correct.
1761 * incompatible change: PURIFY no longer copies the data from the
1762 dynamic space into the static and read-only spaces on platforms
1763 that use the generational garbage collector
1764 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1766 * bug fix: GC race condition occasionally resulting in crashes with
1767 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1769 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1771 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1772 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1773 * bug fix: an asynchronous interrupt could previously leave the
1774 system running with GC inhibited.
1775 * bug fix: a DECLARE form evaluated at top-level now causes an error
1776 rather than silently (or verbosely) returning NIL.
1777 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1778 result in a error being signalled due to source form lookup errors.
1779 (reported by Peter Graves)
1781 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1782 * incompatible change: removed writer methods for host-ent-name,
1783 host-ent-addresses -- changing the values did not update the DNS
1785 * minor incompatible change: changed experimental JOIN-THREAD interface
1786 * documentation: the manual now lists reader and writer methods
1787 in class slot documentation sections. (thanks to Richard M Kreuter)
1788 * documentation: unwinding from asyncronous events has been
1789 documented as unsafe.
1790 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1791 in multithreaded application code.
1792 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1793 platforms. (thanks to James Anderson for the optimization hint)
1794 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1796 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1797 variants no longer cons.
1798 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1799 their NOT- variants no longer cons.
1800 * optimization: EQUAL hash tables no longer use SXHASH for objects
1801 of all data types, but instead use an EQL hash for types for which
1802 EQUAL is the same as EQL.
1803 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1804 are significantly faster.
1805 * optimization: new STRING-OUTPUT-STREAM implementation is much
1806 faster for large outputs and conses 30% less on average.
1807 * enhancement: XREF information is now collected for references made
1808 to global variables using SYMBOL-VALUE and a constant argument.
1809 * enhancement: SIGINT now causes a specific condition
1810 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1811 * bug fix: FILE-POSITION used to signal an error in some cases where
1812 ANSI requires it to return NIL.
1813 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1814 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1815 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1817 * bug fix: bad type declaration in the CLOS implementation has
1818 been fixed. (reported by James Anderson)
1819 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1820 (thanks to Lutz Euler)
1821 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1822 required by the CLHS. (reported by Samium Gromoff)
1823 * bug fix: dead unbound variable references now signal an error.
1824 (reported by Marco Monteiro)
1825 * bug fix: / with an unused value was being deleted in safe code.
1826 (thanks to Marco Monteiro and Kevin Reid)
1827 * bug fix: number of characters that can be written onto a single
1828 line in a file is unlimited.
1829 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1830 been fixed by inhibiting interrupts for when GC is disabled.
1831 * bug fix: some interrupt safety issues with GETHASH, (SETF
1832 GETHASH), CLRHASH and REMHASH have been fixed.
1833 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1834 specifier no longer causes infinite recursion.
1835 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1836 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1837 * bug fix: an &environment argument with the correct variable information
1838 is passed to macros that are expanded during byte compilation.
1839 (reported by Samium Gromoff)
1840 * bug fix: a logic error was causing the hash function for bignums to
1841 have excessive amounts of collisions. (reported by Faré Rideau)
1842 * bug fix: modifying the contents of an array could change the return
1843 value of SXHASH on that array, which is only allowed for strings
1844 and bit vectors. (bug introduced in 0.9.16)
1845 * improvement: the x86-64/darwin port now passes all tests (except
1846 for the debugger tests) but should still be considered
1847 experimental until this is fixed.
1848 * improvement: a style-warning is signaled for CASE (etc) clauses with
1849 duplicate keys. (thanks to Kevin Reid)
1850 * improvement: macos/x86 and macos/x86-64 now use mach exception
1851 handlers for dealing with illegal instructions (for trapping and
1852 error handling) and memory protection violations (for GC).
1854 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1855 * new platform: experimental support for x86-64/darwin (MacOS).
1856 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1857 and getnameinfo sockets functions are used instead of gethostbyaddr
1858 and gethostbyname, on platforms where the newer functions are available.
1859 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1861 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1862 don't print the startup banner, but behave as if --noinform was passed
1863 as a command line argument. (thanks to Kevin Reid)
1864 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1865 * optimization: code using alien values with undeclared types is much faster.
1866 * optimization: the compiler is now able to open code SEARCH in more cases.
1867 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1868 * bug fix: using standardized COMMON-LISP special variables as loop
1869 variables no longer signals bogus package lock violations. (reported
1871 * bug fix: declaring local loop variables to be of a range-limited type
1872 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1873 (reported by Andras Simon)
1874 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1875 bugs remain on x86-64.)
1876 * bug fix: the #= and ## reader macros now interact reasonably with
1877 funcallable instances.
1878 * bug fix: type-checks for function arguments were compiled using the
1879 compiler policy settings of the wrong lexical environment (in 1.0.2
1881 * bug fix: SHADOW accepts characters as string designators, as required
1882 by the spec (thanks to Eric Marsden)
1883 * bug fix: fixed GC safety issues when foreign functions are called with
1884 non-base strings as arguments
1885 * bug fix: more consistent error output for fatal-compiler-warnings, like
1887 * bug fix: functions with proper names were showing up as NIL in
1888 backtraces (reported by Edi Weitz, regression in 1.0.2)
1890 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1891 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1892 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1893 produce more efficient code on the x86 if the compiler can determine
1894 that (+ INDEX <constant>) does not require a bounds check and FOO
1895 has an element type at least 8 bits wide.
1896 * bug fix: references to undefined variables are handled the same way
1897 in toplevel forms as in the normal compiler
1898 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1900 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1901 (thanks to Jon Buller)
1902 * improvement: faster compilation times for complex functions
1903 * improvement: added readlink support to SB-POSIX (thanks to Richard
1906 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1907 * improvement: experimental support for mach exception handling on
1908 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1910 * improvement: support for GBK external format.
1911 (thanks to Chun Tian (binghe))
1912 * improvement: the debugger now displays variables that have been closed
1913 over, in code compiled with (DEBUG 2) or higher
1914 * improvement: support for executable cores on NetBSD (thanks to
1916 * new feature: added a RESTART-FRAME debugger command
1917 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1918 be used to provide an implementation for FILE-POSITION on Gray streams
1919 (thanks to Eric Marsden)
1920 * new feature: add syslog, openlog and closelog support to SB-POSIX
1921 (thanks to Richard Kreuter)
1922 * optimization: the function call overhead in code compiled with
1923 a high DEBUG optimization setting is significantly
1924 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1925 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1926 (thanks to Tony Martinez)
1927 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1928 evaluated once (reported by Kevin Reid)
1929 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1930 works again (thanks to Kilian Sprotte)
1931 * bug fix: an error is signaled for tagbodies with duplicate tags
1932 (thanks to Stephen Wilson)
1933 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1934 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1935 stack frames from alien callbacks.
1936 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1937 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1938 65k pages (thanks to David Woodhouse)
1939 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1941 changes in sbcl-1.0.1 relative to sbcl-1.0:
1942 * new platform: FreeBSD/x86-64, including support for threading.
1943 * new feature: the compiler stores cross-referencing information
1944 about function calls (who-calls), macroexpansion (who-macroexpands)
1945 and special variables (who-binds, who-sets, who-references) for code
1946 compiled with (< SPACE 3). This information is available through the
1947 sb-introspect contrib.
1948 * new feature: users may subclass SEQUENCE, and have instances of
1949 these classes interoperate with standard Common Lisp functions if
1950 a number of methods are defined. (This feature is experimental
1951 and the interface subject to change based on feedback from SBCL
1952 users and the general community)
1953 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1954 x86/x86-64, rather than the previous fixed depth of 8
1955 * improvement: another pthread back-end of mutex "pthread-futex".
1956 * bug fix: non-ascii command-line arguments are processed correctly
1957 (thanks to Yaroslav Kavenchuk)
1958 * bug fix: non-required arguments were not passed correctly when a method
1959 defined using DEFMETHOD was called from a mop-generated method using
1960 CALL-NEXT-METHOD (reported by Pascal Costanza)
1961 * bug fix: recursion is now permitted in accessors through
1962 SLOT-UNBOUND. (reported by Pascal Costanza)
1963 * bug fix: an error was signaled at startup if the HOME environment
1964 variable was defined, but had an empty value (reported by Peter Van Eynde)
1965 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1966 signal a PROGRAM-ERROR, not a BUG.
1967 * bug fix: SB-POSIX:READDIR works when built with large file support.
1968 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1970 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1971 for better automatic indentation support. (thanks to Matt Pillsbury)
1972 * optimization: loading generic functions no longer takes O(n^2) time,
1973 proportional to the amount of methods in the generic function
1974 (reported by Todd Sabin and Jeremy Brown)
1975 * optimization: the FIND and POSITION family of sequence functions
1976 are significantly faster on arrays whose element types have been
1978 * improvements to the Windows port:
1979 ** Intermittent heap corruption problems have been fixed. (thanks
1980 to Alastair Bridgewater)
1981 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1983 ** Lisp is able to unwind foreign exception frames from alien
1984 callbacks. (thanks to Alastair Bridgewater)
1986 changes in sbcl-1.0 relative to sbcl-0.9.18:
1987 * improvement: experimental support for threading on FreeBSD/x86.
1988 (thanks to NIIMI Satoshi)
1989 * improvement: runtime option --dynamic-space-size can be used
1990 to set the size of the dynamic space reserved on startup.
1991 * improvement: floating point modes in effect are now saved in
1992 core, and restored on startup.
1993 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1994 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1995 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1996 threads are not running after *SAVE-HOOKS* have run.
1997 * improvement: writes to CLOS instance slots are type-checked in code
1998 compiled with (SAFETY 3)
1999 * improvement: floating-point exception handling on FreeBSD (thanks to
2001 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2002 (thanks to Zach Beane)
2003 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2005 * improvement: added support for the Shift-JIS external format.
2006 (contributed by NIIMI Satoshi)
2007 * improvement: callbacks are supported on Linux/PPC. (thanks to
2009 * bug fix: compiler bug triggered by a (non-standard) VALUES
2010 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2011 * bug fix: file compiler no longer confuses validated and already
2012 dumped structurres. (reported by Kaersten Poeck)
2013 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2014 fill-pointer signals a type-error as required. (thanks to
2016 * bug fix: disassemly of funcallable instances works.
2017 * bug fix: single stepping on PPC.
2018 * bug fix: fix thread-safety problems in the type system (generally
2019 manifesting as nonsensical errors like "STRING is a bad type specifier
2020 for sequences" or "The value 1 is not of type FIXNUM")
2021 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2022 (reported by Josip Gracin)
2023 * bug fix: an error is signaled for attempts to displace arrays with
2024 incompatible element types (thanks to Mario Mommer)
2025 * bug fix: more correct handling of wide characters in debug info
2026 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2027 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2028 and don't cause extra consing
2029 * optimization: MAP and MAP-INTO are significantly faster on vectors
2030 whose elements types have been declared.
2031 * Improvements to SB-SPROF:
2032 ** Support for allocation profiling
2033 ** Reduced profiling overhead, especially for long profiling runs
2034 * Improvements to the Windows port:
2035 ** floating point exceptions are now reported correctly.
2036 ** stack exhaustion detection works partially.
2037 ** more accurate GET-INTERNAL-REAL-TIME.
2038 ** better RUN-PROGRAM behaviour in case of errors in the child
2040 ** PROBE-FILE now simplifies pathnames correctly.
2041 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2042 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2043 1st 1970 (although time timezone data will be unreliable).
2044 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2046 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2047 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2048 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2050 * bug fix: two potential GC deadlocks affecting threaded builds.
2051 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2052 returns T (reported by Anton Kazennikov)
2053 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2054 with non-variable places
2055 * bug fix: remove a race condition in the setting of
2056 funcallable-instance functions, this should make threaded CLOS
2057 code more stable against memory faults.
2058 * bug fix: corruption of specials when unbinding is interrupted by an
2059 asynchronous unwind (reported by Hannu Koivisto)
2060 * improvement: the debugger will now also display local variables that
2061 are only used once, for code compiled with a DEBUG optimization quality
2064 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2065 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2066 * incompatible change: External-format support for FFI calls. The
2067 SB-ALIEN:C-STRING no longer implies an ASCII
2068 external-format. Instead the string is subject to external-format
2069 conversion. Additionally return values of type SB-ALIEN:C-STRING
2070 are by default of type (SIMPLE-ARRAY CHARACTER), not
2071 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2072 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2073 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2074 * incompatible change: SB-EXT package no longer contains the
2075 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2076 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2078 * incompatible change: the single-stepper is no longer available
2079 on Alpha, Mips and Sparc platforms.
2080 * minor incompatible change: the direct superclasses of
2081 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2082 not (STANDARD-OBJECT FUNCTION). This makes the
2083 class-precedence-lists of GENERIC-FUNCTION and
2084 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2086 * minor incompatible change: the default stream external format on
2087 non-unicode SBCL is no longer detected from the locale, but is always
2089 * new feature: Add a version of evaluator that uses an interpreter instead
2090 of the compiler. EVAL still uses the compiler by default, to switch it
2091 to use the interpreter, set the value of the variable
2092 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2093 * minor incompatible change: the single-stepper REPL has been merged
2094 with the normal debugger (see the "Stepping" heading of the debugger help
2095 for more details). The debugger command STEP will no longer switch
2096 to the single-stepper REPL.
2097 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2098 for a type now works.
2099 * bug fix: loading of default sysinit file works. (thanks to Leonid
2101 * bug fix: better detection of circularities in the file-compiler.
2102 (reported by Marco Monteiro)
2103 * bug fix: the CL pathname functions now work with files that have
2104 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2105 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2106 systems with Unix98 pty semantics.
2107 * bug fix: ASDF-INSTALL will now work with bsd tar.
2108 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2110 * bug fix: timers expiring in dead threads no longer cause a
2111 type-error (reported by Paul "Nonny Mouse").
2112 * bug fix: thanks to more lightweight single-stepper instrumentation,
2113 code compiled with (DEBUG 3) will compile and execute significantly faster,
2114 and will have more accurate type-inferencing than before
2115 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2116 whose bindings are modified
2117 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2118 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2119 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2120 CL:SOFTWARE-VERSION with proper version
2122 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2123 * feature: implemented the READER-METHOD-CLASS and
2124 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2125 as specified by AMOP.
2126 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2128 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2129 (thanks to Lutz Euler)
2130 * optimization: hashing of general arrays and vectors has been
2131 improved. (reported by Any Fingerhut)
2132 * enhancement: SB-INTROSPECT is now able to find definitions of
2133 profiled functions. (thanks to Troels Henriksen)
2134 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2135 as well, allowing compiler-macros for SETF-functions to expand.
2136 * enhancement: step-instrumentation no longer wraps known
2137 single-value functions with multiple-value context, allowing
2138 better type inference.
2139 * fixed bug #337: use of MAKE-METHOD in method combination now works
2140 even in the presence of user-defined method classes. (reported by
2141 Bruno Haible and Pascal Costanza)
2142 * fixed bug #339(c): if there are applicable methods not part of any
2143 long-form method-combination group, call INVALID-METHOD-ERROR.
2144 (reported by Bruno Haible)
2145 * fixed bug #361: the :FUNCTION initarg in the protocol for
2146 initialization of methods can now be used to override
2147 internally-produced optimized functions. (reported by Bruno
2149 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2150 system-provided lambda expression no longer cause warnings about
2151 unbound #:|pv-table| symbols.
2152 * bug fix: improved the handling of type declarations and the
2153 detection of violations for keyword arguments with non-constant
2155 * bug fix: potentially erronous calls to PATHNAME and
2156 MERGE-PATHNAMES were being flushed in some cases.
2157 (reported by Richard Kreuter)
2158 * bug fix: compiled calls to TYPEP were mishandling obsolete
2159 instances. (reported by James Bielman and Attila Lendvai)
2160 * bug fix: format strings with ~> without matching ~< no longer
2161 trigger an AVER, but signal an understandable error instead.
2162 (reported by Antonio Martinez)
2163 * bug fix: specifying an output-file without a pathname-type for
2164 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2165 of input-file instead of "fasl". (reported by Robert Dodier)
2166 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2167 (reported by James Y Knight).
2168 * bug fix: compiler-macros-function did not consider the environment
2169 argument for shadowing by local functions.
2170 * bug fix: compiler-macros expansion was inhibited by local INLINE
2172 * bug fix: inline expansions of known functions were subject to
2173 step-instrumentation in high debug policies, leading to problems
2174 with type-inference.
2175 * bug fix: compiler failed to differentiate between different CONS
2176 types in some cases.
2177 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2178 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2179 * bug fix: #368: incorrect use of expressed vs. upgraded array
2181 * bug fix: #306a: more precise unions of array types.
2182 * thread-safety improvements:
2183 ** CONDITION-WAIT could return early on Linux, if the thread was
2184 interrupted and subsequently continued with SIGCONT.
2185 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2187 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2188 * added support for the ucs-2 external format. (contributed by Ivan
2190 * minor incompatible change: pretty printing of objects of type
2191 (cons symbol) is, in the default pprint-dispatch-table, now
2192 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2194 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2195 called later in a class's lifetime, possibly as late as when the
2196 first instance of the class is created. Previously,
2197 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2198 class became finalizeable.
2199 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2200 for multibyte external-format streams. (thanks to "vbzoli")
2201 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2202 with :ALLOCATION :CLASS inherited from superclasses of the
2204 * fixed bug: anonymous classes can now be created using the :NAME
2205 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2206 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2207 * fixed bug: core-files saved with :EXECUTABLE T can again be
2208 executed when SBCL_HOME isn't set. (reported by James Knight)
2209 * fixed bug: toplevel LOCALLY forms with declarations could
2210 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2211 * fixed bug: printing from several different threads using different
2212 values of *print-case* could cause invalid output, due to
2213 some internal special variables of the printer not being bound
2214 thread-locally (reported by Max Mikhanosha)
2215 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2216 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2217 (reported by Pascal Costanza)
2218 * fixed bug: FINALIZE-INHERITANCE is called from
2219 REINITIALIZE-INSTANCE on classes when the class has previously
2220 been finalized, as required by AMOP.
2221 * minor code generation optimizations:
2222 ** better register allocation in CLOS dispatching functions
2223 ** overflow detection when coercing signed bytes to fixnums on x86-64
2224 ** is now implemented with one IMUL instruction instead of three shifts
2225 ** more efficient bit-vector access on x86 and x86-64
2226 ** more efficient access to raw structure slots on x86 and x86-64
2227 * fixed some bugs revealed by Paul Dietz' test suite:
2228 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2229 return its argument.
2231 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2232 * feature: thread support on Solaris/x86, and experimental thread support
2234 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2236 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2237 default method for SLOT-UNBOUND.
2238 * minor incompatible change: prevent the user from specializing the
2239 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2240 somewhat counter to the intent of the protocol, I (CSR) think, and
2241 additionally it just doesn't work in SBCL as currently
2242 implemented, thanks to optimizations (that are always valid for
2243 the other three SLOT-VALUEish functions, but not for the setter).
2244 * minor incompatible change: the :SB-LDB feature is now enabled by
2245 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2246 the low-level debugger.
2247 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2248 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2249 down to an SB-SYS:FD-STREAM, allowing direct communication in
2250 more cases. Temporary files and pipes are still used as a fallback
2252 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2253 on the non-reentrant C functions localtime(3) and gmtime(3).
2254 * bug fix: global optimization policy was not visible in LOCALLY and
2256 * bug fix: class objects can be used as specializers in methods.
2257 (reported by Pascal Costanza)
2258 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2259 with a type error. (reported by blitz_ on #lisp)
2260 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2261 failed with a type error. (reported by Pascal Bourguignon)
2262 * bug fix: merging pathnames against defaults with :DIRECTORY
2263 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2264 (reported by James Y Knight)
2265 * bug fix: saving large (>2GB) cores on x86-64 now works
2266 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2267 constant index and a (simple-array (signed-byte 32)) array
2268 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2269 error (patch by Robert J. Macomber)
2270 * feature: TIME now displays the amount of run-time spent in GC
2271 * bug fix: The debugger now does a better job of respecting
2272 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2273 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2274 workaround for bug 403.)
2275 * bug fix: floating point exception handling now works on FreeBSD
2276 (thanks to NIIMI Satoshi)
2277 * fixed some bugs revealed by Paul Dietz' test suite:
2278 ** MISC.641: LET-conversion were not supposed to work in late
2280 * improvements to the Win32/x86 port:
2281 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2282 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2284 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2285 * new feature: source path information is generated for macro-expansion
2286 errors for use in IDE's like Slime (thanks to Helmut Eller)
2287 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2288 * bug fix: compiler does not loop forever on an invalid type in
2290 * improvement: compilation of most CLOS applications is significantly
2292 * optimization: added a limited bytecode compiler for simple toplevel
2293 forms, speeding up compilation and FASL loading
2294 * bug fix: the statistical profiler now properly distinguishes anonymous
2297 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2298 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2299 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2300 into subclasses of the finalized class. Now user calls to
2301 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2302 system return before any subclasses are finalized.
2303 * minor incompatible change: The reader no longer ignores errors
2304 regarding non-existent packages in #+ and #- feature tests.
2305 * new feature: command line options --no-sysinit, --no-userinit to
2306 inhibit loading the corresponding init files
2307 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2308 for sending data through UDP sockets (thanks to François-René Rideau)
2309 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2310 error is signalled instead (thanks to François-René Rideau)
2311 * minor incompatible change: Error signalling behaviour of lexical
2312 operations violating package locks has changed slightly. Refer to
2313 documentation on package locks for details.
2314 * enhancement: EVAL can process IF-expressions without resorting to the
2316 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2317 constant-folded properly due to missing out-of-line functions.
2318 (reported by Mika Pihlajamäki)
2319 * bug fix: LISTEN sometimes returned T even in cases where no data was
2320 immediately available from the stream
2321 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2322 were reversed. (reported by Levente Mészáros)
2323 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2324 when given a vector displaced to an adjustable array. (reported
2326 * bug fix: derivation of float boundaries from numbers outside the
2327 appropriate float range (reported by John Wiseman)
2328 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2330 * bug fix: precomputing cache entries for generic functions with
2331 some subclasses of specializers as yet invalid does not attempt to
2332 fill a cache line with a negative offset. (reported by Levente
2334 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2335 allow condition class objects as arguments to DOCUMENTATION and
2336 (SETF DOCUMENTATION); only find and set documentation for
2337 structure names for the STRUCTURE doc-type. (suggested by Gary
2339 * improvements to the Win32/x86 port:
2340 ** (user-homedir-pathname) and default initialization file
2341 locations now know about the user's "Documents and Settings"
2342 directory (thanks to Yaroslav Kavenchuk)
2343 ** run-program is implemented (thanks to Mike Thomas)
2344 ** sockets support (thanks to Timothy Ritchey)
2345 ** better backtrace support (thanks to Alastair Bridgewater)
2346 ** sb-grovel supported
2347 ** asdf-install and sb-posix work somewhat
2348 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2349 * improvements to the Solaris/x86 port:
2350 ** works on Solaris 11/Solaris Express
2351 ** floating-point exception handling support
2352 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2353 * fixed some bugs revealed by Paul Dietz' test suite:
2354 ** REMOVE-METHOD returns its generic function argument even when
2355 the method is not one of the generic functions' methods.
2356 ** objects declared as MEMBER types can be admissible arguments to
2357 structure accessors.
2358 ** printing characters should simply be printed by the FORMAT ~:C
2360 ** compiler failure when compiling functions with hairy constant
2361 defaults for optional parameters.
2362 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2363 function, which is already optimized.
2365 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2366 * new platform: experimental support for SBCL x86/Darwin, including
2367 MacOS X 10.4.5 on Intel.
2368 * new feature: Unicode character names are now known to the system
2369 (through CHAR-NAME and NAME-CHAR).
2370 * new feature: the filesystem location of SBCL's core file is
2371 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2372 * minor incompatible change: the contrib modules SB-POSIX and
2373 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2374 this change is to make it easier to distribute
2375 location-independent binaries.
2376 * bug fix: as implied by AMOP, standardized classes no longer have
2377 slots named by external symbols of public packages. (reported by
2379 * optimization: calling functions via constant symbols -- as in
2380 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2381 via the function object as in (FUNCALL #'FOO).
2382 * optimization: on x86 and x86-64, the calling convention for the
2383 case of dealing with an unknown number of values has been altered
2384 to be friendlier to the prediction heuristics implemented,
2385 particularly with reference to CALL and RET pairing. (thanks to
2386 Alastair Bridgewater)
2387 * optimization: on x86, the code for access to thread-local symbol
2388 values and binding/unbinding of thread-local symbols is smaller.
2389 (thanks to Alastair Bridgewater)
2390 * enhancement: CONSTANTP is now able to determine constantness of
2391 more complex forms, including calls to constant-foldable standardized
2392 functions and some special forms beyond QUOTE.
2393 * fixed bug: occasional GC crashes on Solaris/x86
2394 * optimization: x86-64 supports stack allocation of results of simple
2395 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2396 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2397 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2398 (thanks to James Knight)
2399 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2400 by the standard (thanks to Stephen Compall)
2402 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2403 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2404 be used for bundling the runtime and the core file into one
2405 executable binary. This feature is not currently supported on all SBCL
2406 platforms. (thanks to James Bielman and NIIMI Satoshi)
2407 * new feature: a generational or ephemeral garbage collector is now
2408 the default on the PowerPC platform (both Linux and Darwin). The
2409 old Cheney (stop and copy) collector is a build-time option.
2410 (thanks to Cyrus Harmon, after Raymond Toy)
2411 * minor incompatible change: the method by which SBCL finds its
2412 contributed modules has changed; it no longer relies on symbolic
2413 links from an $SBCL_HOME/systems directory, but searches directly
2414 in the subdirectories of $SBCL_HOME.
2415 * enhancement: the dynamic heap size on the Linux/PPC platform is
2416 markedly larger, even using the older Cheney garbage collector.
2417 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2418 certain complicated string types. (reported by Gary King)
2419 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2420 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2421 * fixed bug: DOCUMENTATION on structures no longer signals an
2422 error if no structure type of the right name exists. (reported by
2424 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2425 applicable non-standard primary or :AROUND method on
2426 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2427 no longer cause unbound variable errors. (reported by Kevin Reid)
2428 * fixed bug: metacircle resolution in cases where methods have slots
2429 added before the slots from STANDARD-METHOD. (reported by Jean
2431 * fixed bug: the Power PC assembly code for calling into lisp
2432 sometimes computed its return address wrongly (depending on the
2433 15th bit of the address, fixed at link time). This used to
2434 manifest itself in a segmentation violation while building PCL.
2435 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2436 many others over the years)
2437 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2438 the stack pointer (treated as a signed integer) is negative.
2439 (thanks to Peter van Eynde)
2441 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2442 * new platform: experimental support for the Windows operating
2443 system has been added. (thanks to Alastair Bridgewater)
2444 * fixed several bugs in and robustified the PPC FFI (including
2445 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2446 * bug fix: allow non-simple string symbol names (reported by Paul
2448 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2450 * bug fix: saving a core corrupted callbacks on x86/x86-64
2451 * bug fix: closed a loophole in metacircularity detection and
2452 grounding in the PCL implementation of CLOS.
2453 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2454 (reported by tomppa on #lisp)
2455 * bug fix: clear the direction flag on Lisp -> C transitions, as
2456 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2457 (reported by Andrej Grozin and Hendrik Maryns)
2458 * optimization: major improvements to GC efficiency on GENCGC platforms
2459 * optimization: faster implementation of EQUAL
2460 * optimization: emit more efficient opcodes for some common
2461 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2462 * optimization: several other minor code-generation improvements on x86-64
2463 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2465 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2466 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2467 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2468 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2469 by ANSI as a generic function, and for consistency (SETF
2470 GENERIC-FUNCTION-NAME) is treated likewise.
2471 * fixed bug #233.b: make constraint propagation notice when a variable
2472 value is changed after it is referenced but before it is used
2473 * fixed bug #296: no more arbitrary behaviour from filenames with
2474 odd characters as --load arguments. (reported by Adam Warner)
2475 * fixed bug #390: :CHARACTER-SET pathname components now work as
2476 expected. (reported by Tim Daly Jr)
2477 * fixed bug #391: complicated :TYPE intersections in slot
2478 definitions no longer cause an error in PCL internals.
2479 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2480 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2481 returning the number of octets which would be written to the
2482 file-stream. (thanks to Robert J. Macomber)
2483 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2484 arguments to the internal stream functions. (thanks to David
2486 * bug fix: stack exhaustion is now handled on the x86/SunOS
2487 platform. (thanks to Daisuke Homma)
2488 * bug fix: more accurate ROOM results on GENCGC platforms
2489 * optimization: improved type inference for arithmetic-for
2490 index variables in LOOP
2491 * optimization: faster floating-point SQRT on x86-64
2492 * fixed some bugs revealed by Paul Dietz' test suite:
2493 ** DOCUMENTATION returns NIL instead of "" for method combinations
2494 that don't have a docstring
2496 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2497 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2498 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2499 therefore are not customizeable by user code (as seems to be at
2500 least permitted and maybe required by AMOP). As a consolation,
2501 however, the SBCL implementation of these functions now calls
2502 REINITIALIZE-INSTANCE as specified by AMOP.
2503 * bug fix: slot-definition documentation is propagated as per ANSI
2504 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2505 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2506 argument, as do eslotd initialization methods. (from Pascal
2507 Costanza's "Closer" project)
2508 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2509 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2511 * bug fix: it is now possible to have more than one subclass of
2512 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2513 (reported by Bruno Haible, Pascal Costanza and others)
2514 * bug fix: the dependent update protocol now works for generic
2515 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2516 and Pascal Costanza)
2517 * bug fix: condition-class instances corresponding to
2518 DEFINE-CONDITION forms are now created eagerly. (reported by
2519 Kalle Olavi Niemitalo on comp.lang.lisp)
2520 * bug fix: floating point printing is more accurate in some
2521 circumstances. (thanks to Simon Alexander)
2522 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2523 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2524 * bug fix: callbacks on OS X now preserve stack-alignment.
2525 (thanks to Cyrus Harmon)
2526 * enhancement: the x86-64 disassembler is much better at
2527 disassembling SSE instructions. (thanks to Lutz Euler)
2528 * enhancement: CHECK-TYPE on a variable now allows type-inference
2529 (thanks to Vincent Arkesteijn)
2530 * optimization: improved performance of EUC-JP external format.
2531 (thanks to NIIMI Satoshi)
2532 * optimization: performance improvements to IO on file streams of
2533 :ELEMENT-TYPE CHARACTER
2534 * optimization: much faster memory allocation on x86-64
2535 * optimization: faster garbage collections (latency and throughput)
2537 * optimization: faster bignum subtraction and division on x86 and x86-64
2538 (thanks to Lutz Euler)
2539 * optimization: more accurate type-inference for loops that use a
2540 floating point index variable or a negative step.
2542 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2543 * bug fix: add a workaround to SBCL looping infinitely at startup on
2544 Linux kernels with apparently buggy implementations of personality().
2545 (thanks to Svein Ove Aas)
2546 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2547 (thanks to David Lichteblau)
2548 * bug fix: local bindings shadow global symbol macros for
2549 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2550 * optimization: non-open coded uses of numeric comparison operators
2551 (e.g. >) no longer cons when called with more than one parameter
2552 on platforms supporting dynamic-extent allocation.
2553 * enhancement: saving cores with foreign code loaded is now supported
2554 on MIPS/Linux in addition to the previously supported platforms.
2555 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2556 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2557 * bug fix: division by zero in sb-sprof when no samples were collected
2558 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2559 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2560 (thanks to Alexander Kjeldaas)
2561 * new feature: ignoring the return values of destructive functions
2562 like NREVERSE signals a compile-time style-warning.
2563 (thanks to Kevin Reid)
2564 * new feature: the alignment of alien structure fields can be
2565 explicitly specified. (thanks to Cyrus Harmon)
2566 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2567 and dump core on SIGQUIT
2569 ** incompatible change: threads do not inherit values of specials
2570 from their parents (see manual)
2571 ** bug fix: threads stacks belonging to dead threads are freed by the
2572 next exiting thread, no need to gc to collect thread stacks anymore
2573 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2574 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2575 ** bug fix: dynamic variable and thread start related gc lossage
2576 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2578 * fixed some bugs revealed by Paul Dietz' test suite:
2579 ** SUBTYPEP is slightly more accurate on heinously complicated
2580 CONS types where some of the members have uncertain (in the
2581 NIL, NIL sense) type relationships to each other.
2583 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2584 no longer purified unless :PURIFY T is explicitly specified.
2585 ** Non-purified cores are significantly smaller than before
2587 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2588 * new feature: timers based on Zach Beane's excellent timer package
2589 * added support for the following external formats: koi8-u,
2590 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2591 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2592 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2593 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2594 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2595 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2596 * incompatible change: a threaded SBCL will no longer revert to
2597 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2598 * bug fix: interrupts are disabled until startup is complete; no
2599 more sigsegvs when receiving a signal to soon
2600 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2602 * bug fix: add a workaround for the memory randomization features in
2603 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2604 workaround will only be in effect on systems with the proc filesystem
2606 * bug fix: printing objects of type HASH-TABLE signals a
2607 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2609 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2610 have been running for over 50 days. (reported by Gilbert Baumann)
2611 * bug fix: the logic for getting names of functions gets less
2612 confused when confronded with alternate-metaclass
2613 funcallable-instances. (reported by Cyrus Harmon)
2614 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2615 consistent, even on internal alternate-metaclass objects.
2616 * bug fix: flush closure information collected by physical
2617 environment analysis prepass before the main pass. (bug reported
2619 * bug fix: compiler pack phase does not modify a hashtable, which is
2620 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2621 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2622 may be expanded. (reported by Alexander <malishev> on c.l.l)
2623 * bug fix: no more style-warnings when compiling code using LAST
2624 under high-SPEED low-SPACE settings. (reported by David Wallin
2626 * fixed some incompatibilities between SBCL's MOP and the MOP
2628 ** the METAOBJECT class is now implemented;
2629 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2630 STANDARD-OBJECT, as required;
2631 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2632 now compatible (as required by VALIDATE-SUPERCLASS); there
2633 remains a consistency requirement over the presence or absence
2634 of the FUNCTION class in the superclass list of finalized
2635 classes; see the manual for more details;
2636 ** the :AROUND method for COMPUTE-SLOTS on
2637 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2638 requested slot ordering.
2640 ** bug fix: parent thread now can be gc'ed even with a live
2642 ** bug fix: binding a special with PROGV to no value is not
2643 the same as that symbol not having been bound (thanks to
2645 ** bug fix: binding specials is thread safe (thanks to
2647 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2648 and SB-SPROF do not die with 'no handler for signal XX in
2649 interrupt_handle_now(..)' anymore
2650 ** bug fix: WITH-TIMEOUT works with multiple running threads
2651 * fixed some bugs revealed by Paul Dietz' test suite:
2652 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2653 the :method-class keyword argument.
2655 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2656 * new port: the Solaris operating system on x86 processors is now
2657 mostly supported, though some rough edges in the environment
2658 remain. (thanks to Daisuke Homma)
2659 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2660 space for its heap. (thanks to Thiemo Seufer)
2661 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2662 closures. (thanks to Thiemo Seufer)
2663 * minor incompatible change: eof selects abort in the debugger.
2664 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2665 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2667 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2668 deprecated, and will go away in a future revision of SBCL.
2669 * minor incompatible change: GC-ON and GC-OFF are no longer
2670 implemented with a counter, it does not matter how many times gc
2671 is switched on or off
2672 * bug fix: discriminating functions for generic function classes
2673 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2674 make invalid assumptions about method precedence order. (reported
2676 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2677 platforms. (thanks to Thiemo Seufer)
2678 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2679 * bug fix: correct pathname printing with printer escaping is on.
2680 (thanks to Kevin Reid)
2681 * bug fix: complex VOP definitions in "user-space" no longer trigger
2682 package locks. (reported by Zach Beane)
2683 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2684 for funcallable-instance functions, and is no different from
2686 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2687 characters in the current readtable. (reported by Nicholas Neuss)
2688 * bug fix: SUBTYPEP on various CONS types returns more a more
2689 accurate acknowledgment of its certainty.
2690 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2691 lists in some cases. This partially fixes bug 384.
2692 * flush all standard streams before prompting in the REPL and the
2694 * bug fix: signal handling and triggering gc do not conflict
2695 directly anymore, in particular a high frequency sb-sprof does
2696 not prevent gc from running
2697 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2698 approximation for timezone and DST information between the
2699 universal time epoch and the smallest negative 32-bit time_t.
2700 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2701 year 1899 so long as the encoded time is non-negative.
2702 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2703 the correct answer for non-constant rotate amounts when performing
2704 an inline 32-bit rotation.
2706 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2707 there is only one thread in the session
2708 ** bug fix: memory leak for streams created in one thread and
2709 written to in another
2710 ** bug fix: lockup when compiled with gcc4
2711 ** bug fix: race that allows the gc to be triggered when gc is
2713 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2714 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2716 ** bug fix: finished threads are gc'ed properly
2717 * fixed some bugs revealed by Paul Dietz' test suite:
2718 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2719 has arguments with a different set of applicable methods from
2720 the orignal arguments.
2721 ** The type error thrown by MAP now has a correct expected-type
2723 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2724 name a compiled function.
2725 ** Three MISC tests where a large bignum was improperly coerced to
2726 a float that couldn't represent that bignum during type
2727 derivation were fixed.
2728 ** SUBTYPEP can now handle types involving the negation of a
2729 list-form FUNCTION type.
2730 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2731 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2732 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2734 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2735 * New feature: Experimental support for bivalent streams: streams
2736 opened with :element-type :default now allow character and binary
2737 (unsigned-byte 8) I/O
2738 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2739 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2741 * bug fix: no more highly sporadic "couldn't check whether ~S is
2742 readable" when reading a stream and an interrupt hits in the middle
2743 of a select system call
2744 * compiler better recognizes complex arrays (reported by Eduardo
2746 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2747 for variables on SBCL built with linkage-tables. (reported by Luis
2749 * various error reporting improvements.
2750 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2751 (Thanks to Thiemo Seufer)
2752 * bug fix: nested reader invokations work correctly
2753 * bug fix: it is possible to have simultaneous references to foreign
2754 code and foreign data with the same name.
2756 ** added x86-64 support
2757 ** incompatible change: the threading api now works with thread
2758 objects instead of thread ids
2759 ** bug fix: threads are protected from signals and interruption when
2760 starting up or going down
2761 ** bug fix: a race where an exiting thread could lose its stack to gc
2762 ** bug fix: don't halt on infinite error in threads if possible
2763 ** fixed numerous gc deadlocks introduced in the pthread merge
2764 ** bug fix: fixed thread safety issues in read and print
2765 ** bug fix: debugger doesn't hang on session lock if interrupted at
2766 an inappropriate moment
2767 ** bug fix: run-program is now thread safe(r)
2768 ** bug fix: inner with-recursive-lock no longer releases the mutex
2769 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2770 * fixed some bugs revealed by Paul Dietz' test suite:
2771 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2772 EXPECTED-TYPE slots filled.
2773 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2775 ** MAKE-CONDITION accepts classes as type-designators.
2776 ** COMPILE may never return NIL.
2777 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2778 range before calling Unix time functions
2780 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2781 * numerous signal handling fixes to increase stability
2782 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2783 * minor incompatible change: we now correctly canonize default
2784 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2785 as per the MOP, rather than the historical (INITARG INITFUNCTION
2786 INITFORM). (reported by Bruno Haible)
2787 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2788 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2789 for more information.
2790 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2791 pathname is a directory pathname.
2792 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2793 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2795 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2796 :METACLASS argument in addition to a class name. (reported by
2797 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2798 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2799 (reported by Bruno Haible; patch from Gerd Moellmann)
2800 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2802 * bug fix: more cleanups to the floating point exception handling on
2803 x86-64 (thanks to James Knight)
2804 * bug fix: the compiler does not try to constant fold calls of
2805 COERCE and BIT-* functions when they return freshly constructed
2806 objects. (reported by Nikodemus Siivola and Paul Dietz)
2807 * optimization: improved the MIPS versions of generic (in the
2808 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2809 * optimization: direct conversion of (unsigned-byte 32) to floats on
2810 the PowerPC platform.
2811 * optimization: structure instances with raw slots now use less
2812 memory, and probably show better memory locality. (thanks to
2814 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2815 are treated as requests for stack allocation on the x86-64,
2816 Alpha-32, PPC and SPARC platforms.
2817 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2818 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2819 (thanks to Tony Martinez)
2821 ** gcing a dead thread can no longer lead to lockups
2822 ** threads block signals until they are set up properly
2823 ** errno is no longer shared by threads
2824 ** interrupt-thread restores the eflags register on x86
2825 ** fixed some lockups due to gc/thread interaction
2826 * fixed some bugs revealed by Paul Dietz' test suite:
2827 ** invalid dotted lists no longer raise a read error when
2828 *READ-SUPPRESS* is T
2829 ** signal an error if a symbol that names a declaration is used
2830 as the name of a type, or vice versa
2831 ** allow using the (declare (typespec var*)) abbreviation for
2832 (declare (type typespec var*)) with all type specifiers
2833 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2834 ** always return NIL from PPRINT-POP when OBJECT is NIL
2835 ** don't signal errors when pretty-printing malformed LABELS,
2836 FLET or MACROLET forms
2837 ** declarations in a DOLIST body are also in scope for the
2839 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2841 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2844 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2845 * fixed cross-compiler leakages that prevented building a 32-bit
2846 target with a 64-bit host compiler.
2847 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2848 opened with :IF-EXISTS :OVERWRITE.
2849 * fixed bug 281: error for an invalid qualifier in a short-form method
2850 combination method is not signalled until the faulty method is called.
2851 * bug fix: iteration variable type inferrer failed to deal with open
2852 intervals. (reported by Alan Shields)
2853 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2854 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2855 or more runtime options were provided to the sbcl binary.
2856 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2857 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2858 * optimization: there's now a fast-path for fixnum arguments in the
2859 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2860 * optimization: the code generated on x86-64 is more compact thanks
2861 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2862 * bug fix: floating-point exception handling now partly works on
2863 x86-64. (Thanks to James Knight)
2864 * improvement to the MIPS backend from Thiemo Seufer: C-style
2865 64-bit long long arguments and return values to alien functions
2867 * fixed some bugs revealed by Paul Dietz' test suite:
2868 ** the type-error signalled from WARN has a filled-in DATUM slot.
2869 ** the type-error required when a stream is not associated with
2870 a file has the stream as its datum.
2871 ** type-errors on single-floats on x86-64 no longer have
2872 :INVALID-OBJECT as the datum
2873 ** the type-errors signalled for invalid function names now have
2874 a correct expected type
2875 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2876 for structures defined with a :TYPE. Documentation strings for
2877 typed structures are no longer immediately discarded
2878 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2879 broadcast streams and synonym streams. FILE-LENGTH now also works
2880 on broadcast streams.
2882 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2883 * incompatible change: the --noprogrammer option, deprecated since
2884 version 0.7.5, has been removed. Please use the equivalent
2885 --disable-debugger option instead.
2886 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2888 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2889 inoperational for a while now) has been completely removed.
2890 * null lexical environments are now printed as #<NULL-LEXENV>,
2891 significantly reducing the amount of clutter in typical backtraces.
2892 * documentation on weak pointers, finalization, and after GC hooks
2893 has been added to the manual.
2894 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2895 as other specialized array types, is much faster. SUBSEQ and
2896 COPY-SEQ on such arrays have also been sped up.
2897 * optimization: EQL is now more efficient when at least other argument
2898 is known to be of type (OR FIXNUM (NOT NUMBER)).
2899 * fixed bug: the runtime is now less vulnerable to changes in the
2900 size of the SBCL object on OS X, and virtual memory is reserved for
2901 all spaces that need to be at a fixed address.
2902 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2903 * fixed bug: finalizers and after GC hooks that cause consing are now
2905 * fixed bug: compiler error messages and summaries are now printed to
2906 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2907 * fixed inference of the upper bound of an iteration variable.
2908 (reported by Rajat Datta).
2909 * fixed bug 211e: calling local functions with duplicated constant
2910 keyword argument no longer causes a bogus style warning about an
2912 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2913 ftype declaration to be disregarded. (reported by Dave Roberts)
2914 * fixed bug 373: caused by erronous compilation of references to alien
2915 variables in the runtime on ppc/darwin.
2916 * fixed bug 376: CONJUGATE type deriver.
2917 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2918 (reported by Baughn on #lisp)
2919 * a cross-compiler bug on non-x86 platforms has been identified and
2920 fixed. (thanks to Bruno Haible)
2921 * improvements to the MIPS runtime code for increased stability.
2922 (thanks to Thiemo Seufer)
2923 * increased the maximimum compact environment size to allow
2924 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2925 * partial workaround for bug 135: don't name the function we're
2926 calling for hairy cases of EVAL, so as not to accumulate one environment
2927 entry per call to EVAL. (reported by Kevin Reid)
2928 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2929 * optimization: type testing for non-vector arrays should be faster.
2930 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2932 * bug fix: setting 31st element of a bit vector to zero did not work
2934 * bug fix: redefining a class definition which failed due to a
2935 previous accessor / function clash now works (but see BUGS entry
2936 #380 for more problems in this area). (thanks to Zach Beane)
2937 * the long form of DEFINE-METHOD-COMBINATION disables method group
2938 checking when given a single method group with pattern *. (thanks
2940 * on x86 compiler supports stack allocation of results of simple
2941 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2942 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2943 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2944 * fixed some bugs related to Unicode integration:
2945 ** the restarts for recovering from input and output encoding
2946 errors only appear when there is in fact such an error to
2948 * fixed some bugs revealed by Paul Dietz' test suite:
2949 ** MISC.549 and similar: late transformation of unsafe type
2950 assertions into derived types caused unexpected code
2952 ** SCALE-FLOAT type deriver is less wrong.
2953 ** type derivers for EXP, LOG and similar functions compute result
2954 types for complex arguments better.
2955 ** (MISC.563) CONJUGATE type deriver works for very restricted
2957 ** out-of-line type testers for character strings are available.
2958 ** EQUAL compiler transform understands specialness of objects
2960 ** accessing double-floats stored on the stack now works on x86-64.
2961 ** debugger internals could sometimes create invalid lispobjs,
2962 resulting in GC crashes.
2963 ** MISC.548: type check weakening can convert required type into
2965 ** initialization forms for bindings are not in scope of free special
2968 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2969 * incompatible change: thread support for non-NPTL systems has
2970 been removed - locking is buggy and unreliable. A threaded
2971 SBCL build will now warn at startup and refuse to create
2972 new threads, unless futex support is detected in the kernel
2973 * incompatible change: the top level REPL now has only an ABORT
2974 restart associated with it, not TOPLEVEL and ABORT as it used to.
2975 TOP and TOPLEVEL are now available as debugger commands for
2976 returning to the top level.
2977 * incompatible change: forms evaluated in the REPL now use the
2978 global optimization policy.
2979 * incompatible change: user- and system-initialization files are
2980 no longer processed with LOAD, but by READ and EVAL; hence the
2981 global optimization policy, startup package, readtable, etc,
2983 * The .fasl file format number has been incremented because of
2984 various incompatible changes.
2985 * internal entry point details and argument counts no longer appear
2986 in backtraces unless explicitly requested by setting
2987 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2988 * built-in and standard functions no longer have names like "top
2989 level local call to FOO".
2990 * fixed bug 32: functions defined in non-null lexical environments
2991 now have more legible printed representation
2992 * fixed bug 33: functions defined in non-null lexical environemnts
2993 are now more amenable to inspection by INSPECT.
2994 * workaround for bug 354: XEPs no longer appear in backtraces unless
2995 explicitly requested.
2996 * fixed bug: receiving the signal which results from attempting to
2997 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2998 SIGBUS on other *BSDs) on architectures where the C stack is also
2999 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3000 to debugger confusion or wild instability. (reported by Cheuksan
3002 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3003 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3004 (reported by Lutz Euler)
3005 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3006 compiled code. (reported by Paul Dietz)
3007 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3008 specialized parameter to a method to something that is not TYPEP
3009 the specializer is now possible.
3010 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3011 face of package deletion.
3012 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3013 pathname. (reported by David Tolpin on c.l.l)
3014 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3015 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3016 STRING-STREAM and FILE-STREAM, respectively.
3017 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3018 than previously; in addition, its test suite is now run on build.
3019 (thanks to Luke Gorrie)
3020 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3021 * optimization: added a immediate representation for single-floats
3023 * fixed some bugs revealed by Paul Dietz' test suite:
3024 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3025 ** attempting to create a package with a colliding nickname causes
3026 correctable errors to be signalled.
3027 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3028 ** several x86-64 backend bugs related to sign-extension of immediate
3031 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3032 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3033 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3035 * fixed loading of multiply forward-referenced layouts.
3036 (thanks to Cheuksan Wang)
3037 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3038 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3039 (see COMPILE-FILE documentation for details of :PRINT option)
3040 * fixed bugs 19 and 317: fixed-format floating point printing is
3041 more accurate. This also fixes a bug reported by Adam Warner
3042 related to the ~@F format directive.
3043 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3045 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3046 dispatch table if the from-char is a dispatch macro character.
3047 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3048 by the wordsize no longer ignore the last word. (reported by Lutz
3050 * fixed bug in type checking of dynamic-extent variables. (reported
3052 * optimization: sequence traversal functions use their freedom to
3053 coerce function designators to functions.
3054 * optimization: code with many calls to CLOS methods specialized on
3055 CLOS classes has had redundant type checks removed.
3056 * optimization: added declarations to speed up operations that access
3057 the internal character database (for example STRING-UPCASE)
3058 * optimization: comparison operations between floats and sufficiently small
3059 fixnums no longer create extra rationals
3060 * fixed some bugs related to Unicode integration:
3061 ** portions of multibyte characters at the end of buffers for
3062 character-based file input are correctly transferred to the
3063 start of the buffer at the next read.
3064 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3065 passing it through to OPEN.
3066 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3067 argument given to internal calls to OPEN.
3068 ** the built-in comment readers (introduced by character sequences
3069 ";" and "#|") are more forgiving to encoding errors; they will
3070 STYLE-WARN and then attempt to resync the stream at a character
3071 boundary. (thanks to Teemu Kalvas)
3072 * fixed some bugs in the x86-64 port:
3073 ** Negative short int return values from c-calls are sign-extended
3075 ** The stack is aligned to 16-bytes for c-calls, as required by
3076 the ABI. (thanks to Cheuksan Wang)
3077 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3078 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3079 for enums. (thanks to Vincent Arkesteijn)
3080 ** Multiple small optimizations and bugfixes for floating point
3082 * fixed some bugs revealed by Paul Dietz' test suite:
3083 ** Space, Tab, Linefeed, Return and Page have the invalid
3084 secondary constituent character trait.
3085 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3087 ** WITH-INPUT-FROM-STRING should only update the index place on
3089 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3090 works more reliably.
3091 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3092 with one-dimensional arrays with fill pointers.
3093 ** TYPE-OF failed on a complex with an integer realpart and a
3095 ** compiler failure during type inference for the code of form
3096 (IF (EQL X (THE ...)) ...) (MISC.535).
3098 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3099 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3100 platform. The port supports 61-bit fixnums, large memory spaces
3101 and reloading shared object files.
3102 * enhancement: saving cores with foreign code loaded is now
3103 supported on ppc/Darwin in addition to the previously supported
3105 * enhancement: the statistical profiler now walks deeper into the
3106 call stack for more meaningful call-graphs and accrued time
3107 reports (x86/x86-64 only). It also now reports time spent in
3109 * enhancement: it is now possible to trace most individual methods
3110 of a generic function in addition to tracing the generic function
3112 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3114 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3115 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3116 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3117 produces an error. (thanks to Vincent Arkesteijn)
3118 * bug fix: NAMESTRING on pathnames with :WILD components in their
3119 directories works correctly. (thanks to Artem V. Andreev)
3120 * fixed bug 125: compiler preserves identity of closures. (reported
3122 * bug fixed: functions with &REST arguments sometimes failed with
3123 "Undefined function" when compiled with (DEBUG 3). (reported by
3125 * bug fix: overflow during compiling of setting element of a bit
3126 vector with constant index and value. (reported by Timmy Douglas)
3127 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3128 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3129 * on x86 compiler partially supports stack allocation of dynamic-extent
3131 * GO and RETURN-FROM do not check the extent of their exit points
3132 when compiled with SAFETY 0.
3133 * fixed some bugs related to Unicode integration:
3134 ** encoding and decoding errors are now much more robustly
3135 handled; it should now be possible to recover even from invalid
3136 input or output to the terminal. (thanks to Teemu Kalvas)
3137 ** provided a first cut at implementing STRING-TO-OCTETS and
3138 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3139 ** altered the SB-MD5 contributed module slightly, changing the
3140 interface just enough for it to be supportable for builds where
3141 lisp characters are not eight bits.
3142 * fixed some bugs revealed by Paul Dietz' test suite:
3143 ** the FORMATTER-generated functions for ~V[ conditionals require
3144 the correct number of arguments.
3145 ** READ-FROM-STRING returns the mandated second value when applied
3146 to displaced strings.
3147 ** the #\Rubout and #\Backspace characters are treated as invalid
3148 constituent characters by the tokenizer.
3150 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3151 * new feature: reloading changed shared object files with
3152 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3153 * new feature: references to foreign variables and functions
3154 can now be compiled and loaded before the corresponding shared
3155 object file is loaded, as long as the foreign definitions are
3156 available at runtime.
3157 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3158 supported. (thanks to Dan Debertin)
3159 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3160 just keywords. (thanks to Vincent Arkesteijn)
3161 * fixed bug #331: structure-class instances corresponding to
3162 DEFSTRUCT forms are now created eagerly.
3163 * fixed bug #345: backtraces from calls to undefined functions work
3164 on x86 as well. Related bug #61 is now also partially fixed on x86
3165 (backtraces from throws to unknown catch tags.)
3166 * bug fix: lambda-list parsing is now stricter vrt. order and number
3167 of lambda-list keywords.
3168 * bug fix: as specified by AMOP, an error is signalled if a
3169 class-option appears multiple times in a DEFCLASS form. (reported
3171 * bug fix: RANDOM can be compiled when the compiler derives the type
3172 of its numeric argument as a disjoint set of small integers.
3173 (reported by Paul Dietz)
3174 * bug fix: starting a core saved with shared objects loaded when
3175 those objects are not available no longer causes threaded SBCL to
3176 hang. (reported by Sean Ross)
3177 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3179 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3180 argument, which must always be NIL. (reported by Kalle Niemitalo)
3181 * bug fix: printing 1.0d+23 no longer results in an error.
3182 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3183 * bug fix: structure slot setters preserve evaluation order. (thanks
3185 * fixed some bugs related to Unicode integration:
3186 ** RUN-PROGRAM can allow its child to take input from a Lisp
3187 stream. (reported by Stefan Scholl)
3188 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3189 locales. (reported by Ken Causey)
3190 * fixed some bugs revealed by Paul Dietz' test suite:
3191 ** INCF, DECF and REMF evaluate their place form as specified in
3193 ** FORMATTER expands ~{ ~} iteration directives with V or #
3194 parameters correctly.
3195 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3196 consequent uses no arguments correctly.
3197 ** the system has a partial understanding of the (COMPLEX RATIO)
3199 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3202 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3203 * new feature: a build-time option (controlled by the :SB-UNICODE
3204 keyword feature, enabled by default) for building the system with
3205 support for the entire 21-bit character space defined by the
3207 * new feature: the system now has rudimentary external-format
3208 support; the primary user-visible change at this time is that
3209 characters with the high bit set (such as lower-case-e-acute) will
3210 print correctly to a terminal in a UTF-8 environment.
3211 * minor incompatible change: BASE-CHAR no longer names a class;
3212 however, CHARACTER continues to do so, as required by ANSI.
3213 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3214 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3215 has been moved to the SB-EXT package (temporarily re-exported from
3217 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3218 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3220 * fixed bug #351: better error-handlind and reporting for malformed
3222 * fixed bug #350: bignum-printing is now more memory-efficient,
3223 allowing printing of very large bignums, eg. (expt 2 10000000).
3224 (reported by Bruno Haible)
3225 * fixed bug #302: better primitive-type selection for intersection
3227 * fixed bug #308: non-graphic characters now all have names, as
3228 required. (reported by Bruno Haible)
3229 * bug fix: redefining a class with different superclasses now correctly
3230 removes it from the direct-subclasses of its previous superclasses.
3231 (reported by David Morse)
3232 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3233 new value now works. (reported by Bruno Haible)
3234 * bug fix: correct canonicalization of multiple non-standard slot
3235 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3236 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3237 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3238 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3239 now exists, an signals an error.
3240 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3241 during macroexpansion for non-iteration variables as well. (reported
3242 by Bruno Haible for CMUCL)
3243 * bug fix: Cyclic structures and unprintable objects in compiler
3244 messages no longer cause errors. (reported by Bruno Haible)
3245 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3246 and READ-FROM-STRING all now return a primary value of NIL if
3247 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3248 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3249 (reported by Bruno Haible for CMUCL)
3250 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3251 do not designate a condition. (reported by Bruno Haible for
3253 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3254 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3255 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3256 permitting resolution in favour of any of the conflicting symbols.
3257 (reported by Bruno Haible for CMUCL)
3258 * bug fix: EQUAL compiler optimizations is less aggressive on
3259 strings which can potentially compare true despite having distinct
3260 specialized array element types.
3261 * bug fix: unit enumerations can be defined without dividing by
3262 zero. (thanks to Vincent Arkesteijn)
3263 * FORMAT compile-time argument count checking has been enhanced.
3264 (report from Bruno Haible for CMUCL)
3265 * a partial workaround for the bug 262: the compiler does not try to
3266 inline-expand a local function doing RETURN-FROM from a deleted
3267 BLOCK. (thanks to Peter Denno for the bug report and to David
3268 Wragg for the simple test case)
3269 * fixed some bugs revealed by Paul Dietz' test suite:
3270 ** RENAME-PACKAGE allows all package designators as new package
3272 ** constraint propagation and lambda variable substitution are
3273 more cautious in dealing with partially deleted code.
3274 ** compiler sometimes lost reoptimization passes.
3275 ** CERROR, given a condition as condition designator, passes its
3276 remaining arguments to the continue format control without
3278 ** Case-altering FORMAT directives work correctly on non-ASCII
3280 ** The REAL type specifier handles bounds outside the floating
3281 point ranges without signalling FLOATING-POINT-OVERFLOW.
3282 ** Functions with IR1-transformations can create intercomponent
3283 references to global functions.
3284 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3286 ** FORMAT ~R treats a nil value for its first parameter correctly.
3288 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3289 * enhancement: saving cores with foreign code loaded is now
3290 supported on x86/NetBSD and sparc/Linux in addition to the previously
3291 supported platforms.
3292 * bug fix: on some platforms repeated installations caused multiple
3293 copies of HTML documentation to be installed -- should not happen
3294 any more. (reported by Stefan Scholl)
3295 * bug fix: parsing self-recursive alien record types multiple times
3296 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3297 original patch by Helmut Eller for CMUCL)
3298 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3299 (thanks to Richard Kreuter)
3300 * bug fix: defining classes whose accessors are methods on existing
3301 generic functions in other (locked) packages no longer signals
3302 bogus package lock violations. (reported by François-René Rideau)
3303 * bug fix: special variables as DEFMETHOD parameters no longer have
3304 associated bogus type declarations. (reported by David Wragg and
3306 * bug fix: read-write consistency on streams of element-type
3307 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3308 * bug fix: redefiniton of the only method of a generic function with
3309 no DEFGENERIC no longer emits a full WARNING. In addition,
3310 redefinition of generic functions with no DEFGENERIC to an
3311 incompatible lambda list now signals an error. (thanks to Zach
3313 * bug fix: DEFGENERIC now works even when there's a function of the
3314 same name in an enclosing lexical environment. (thanks to Zach
3316 * fixed compiler failure, caused by instrumenting code during
3317 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3318 * optimization: added loop analysis and improved register allocation
3319 * fixed some bugs revealed by Paul Dietz' test suite:
3320 ** POSITION on displaced vectors with non-zero displacement
3321 returns the right answer.
3322 ** (SIMPLE-STRING) is a valid type specifier for sequence
3324 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3326 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3327 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3329 ** The justification version of the FORMAT ~< directive treats
3330 non-zero minpad parameter correctly.
3332 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3333 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3334 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3335 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3336 the supported interface.
3337 * new feature: Single-stepping of code compiled with DEBUG 2 or
3338 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3339 * new feature: saving cores with foreign code loaded is now
3340 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3341 Timothy Moore's work for CMUCL)
3342 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3343 parameters to * instead of NIL if no initform is supplied.
3344 (reported by Johan Bockgaard)
3345 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3346 correctly when FUNCALL appears as the car of the form. Note:
3347 despite this FUNCALL forms are not currently subject to
3348 compiler-macro expansion. (port of Raymond Toy's fix for the
3349 same from CMUCL, reported by Johan Bockgaard)
3350 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3351 (thanks for Teemu Kalvas)
3352 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3353 case instead of terminating the iteration (thanks for Julian
3354 Squires, Sean Champ and Raymond Toy)
3355 * bug fix: incorrect expansion of defgeneric that caused a style
3356 warning. (thanks for Zach Beane)
3357 * bug fix: slot accessor effective method computation works properly
3358 for classes with multiple non-standard applicable methods on
3359 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3360 * on x86 compiler supports stack allocation of results of LIST and
3361 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3362 CMUCL implementation by Gerd Moellmann)
3363 * fixed some bugs revealed by Paul Dietz' test suite:
3364 ** FORMAT strings with both the ~<~:;~> form of the justification
3365 directive and pretty-printing directives cause an error.
3367 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3368 * incompatible change: the internal functions
3369 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3370 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3371 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3372 instead of the old functions.
3373 * new feature: on platforms where "dladdr" is available foreign
3374 function names now appear in backtraces. (based on Helmut Eller's
3376 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3377 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3379 * documentation: ASDF manual is now distributed with SBCL.
3380 * bug fix: SBCL can now load its contributed modules with REQUIRE
3381 even if the system-provided entries have been removed from
3382 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3384 * bug fix: backtraces involving undefined functions or assembly
3385 routines are more informative. (thanks to Brian Downing)
3386 * bug fix: mutually referent alien structures now work correctly.
3387 (reported by Rick Taube)
3388 * bug fix: structures defined by WITH-ALIEN can be referred to
3389 within other definitions in the same WITH-ALIEN.
3390 * bug fix: division operators (MOD, TRUNCATE and the like) with
3391 constant zero divisors and integer dividends no longer generate
3393 * bug fix: provide default methods for INPUT-STREAM-P and
3394 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3395 * bug fix: improve the detection and resolution of MOP metacycles
3396 (where effective method computation depends on the generic function
3397 having its effective method computed). (reported by Bruno Haible)
3398 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3399 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3400 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3401 * bug fix: pathnames with relative directory components can be
3402 represented relative to default pathnames.
3403 * optimization: in taking the GCD of bignums, reduce the two bignums
3404 to approximately the same size (using Euclid's algorithm) before
3405 applying the more sophisticated binary GCD. (thanks to Juho
3407 * optimization: COUNT on bitvectors now operates word-at-a-time.
3408 * optimization: ASH with a positive, but not necessarily constant,
3409 (leftwards) shift, when in a modular context, is compiled to a
3411 * fixed some bugs revealed by Paul Dietz' test suite:
3412 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3413 if the corresponding argument is NIL.
3414 ** FORMAT directives accepting a minpad parameter treat negative
3416 ** literal commas as character parameters to FORMAT directives are
3418 ** literal spaces directly after ~<Newline> directives within a
3419 format-logical-block (~:< ~@:>) do not induce :FILL-style
3420 conditional newlines.
3421 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3422 as specified: it no longer includes conditional newlines).
3423 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3425 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3426 :PER-LINE-PREFIX argument does not evaluate to a string.
3428 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3429 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3430 the manual for details; for now, package locks can be disabled by
3431 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3432 if no major problems are found then it is likely that they will be
3433 compiled in unconditionally.
3434 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3435 unsupported operators on all platforms. To load a shared library
3436 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3437 object file, link it into a shared library outside of SBCL and
3438 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3440 * bug workaround: ROOM T and the GC were not working together
3441 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3442 reporting facility aren't preserved. That reporting has been
3443 disabled, so now until and unless someone figures out how to make it
3444 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3445 * minor incompatible change: as threatened around sbcl-0.8.0, the
3446 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3447 The symbols are also exported from SB-PCL for backwards
3448 compatibility, but more so than before SB-PCL should be treated as
3449 an implementation-internal package.
3450 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3452 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3453 It is known as of this release not to work on the Alpha, however.
3454 * fixed bug #167: errors signalled due to illegal syntax in method
3455 bodies are now more legible.
3456 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3457 designators and can hence be used with TYPEP.
3458 * fixed bug #333: CHECK-TYPE now ensures that the type error
3459 signalled, if any, has the right object to be accessed by
3460 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3461 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3462 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3464 * fixed bug #334: programmatic addition of slots using specialized
3465 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3466 and :ALLOCATION :CLASS slots.
3467 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3468 float exponents. (rereported by Peter Seibel)
3469 * fixed a bug: #\Space (and other whitespace characters) are no
3470 longer considered to be macro characters in standard syntax by
3471 GET-MACRO-CHARACTER.
3472 * fixed bug: initialization of condition class metaobjects no longer
3473 causes an instance of the condition to be created. (reported by
3475 * fixed bug: it is now possible to have slots such that
3476 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3477 description is neither :INSTANCE nor :CLASS.
3478 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3479 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3480 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3481 non-standard SLOT-DEFINITION-ALLOCATION values.
3482 * fixed bugs: various race conditions handling exiting threads.
3483 CL-PPCRE's thread torture test now passes.
3484 * fixed arguably-a-bug: GC time proportional to number of threads in
3485 system even when most of them are idle
3486 * optimization: improved performance of BIT and SBIT on bit-vectors.
3487 * .fasl file incompatibility: The fasl file version number has
3488 been incremented because of changes associated with package locks.
3490 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3491 * minor incompatible change: the system no longer provides
3492 optimization hints (conditions which are TYPEP
3493 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3494 mode; these hints are still emitted when higher SPEED optimization
3496 * new contrib module: a sampling profiler (profiling by statistical
3497 sampling, rather than by instrumenting functions) is available as
3498 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3499 * the behaviour of the standard function ED is now customizeable by
3500 third parties through a hook variable: see ED's documentation
3501 string for information on the protocol.
3502 * the compiler no longer emits efficiency notes for (FUNCALL X)
3503 when the type of X is uncertain under default optimization
3505 * fixed bug 276: mutating a binding of a specialized parameter to a
3506 method to something that is not TYPEP the specializer is now
3508 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3509 exhibit the required behaviour on the x86 platform. (thanks to
3510 Peter van Eynde, Eric Marsden and Bruno Haible)
3511 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3512 even for difficult arguments. (reported by Peter Graves)
3513 * fixed bug 141a: the backquote printer now descends quoted
3515 * fixed another bug in backquote printing: no more destructive
3516 modification of the form's list structure. (reported by Brian
3518 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3519 move between its address being taken and the call to
3520 interrupt_thread, fixing a crashing race condition.
3521 * the SB-POSIX contrib implementation has been adjusted so that it
3522 no longer exhibits ridiculously poor performance when constructing
3523 instances corresponding to C structs.
3525 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3526 * minor incompatible change: the sb-grovel contrib now treats C
3527 structures as alien (in the sense of SB-ALIEN) objects rather than
3528 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3529 has implications for memory management of client code
3530 (sb-grovel-returned objects must now be manually managed) and for
3531 type safety (alien objects now have full types).
3532 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3533 used to control emission of compiler diagnostics, rather than the
3534 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3535 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3536 quality should be considered deprecated.
3537 * install.sh now installs the user manual as well
3538 * (not quite a new documentable feature, but worth considering in
3539 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3540 beginnings of a semantically meaningful condition hierarchy is
3541 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3543 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3544 designator as the defaults argument.
3545 * fixed bug: Displaced arrays whose displaced-to array has become
3546 too small now cause ARRAY-DIMENSION to signal an error, providing
3547 for safer bounds-checking. (reported by Bruno Haible)
3548 * fixed bug: DEFCLASS slot definitions with identical :READER and
3549 :WRITER names now signal a reasonable error. (reported by Thomas
3551 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3553 * fixed bug: Invalid slot specification errors now print correctly.
3554 (thanks to Zach Beane)
3555 * fixed bug 320: Shared to local slot value transfers in class
3556 redefinitions now happen corrently from superclasses as
3557 well. (reported by Bruno Haible)
3558 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3560 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3561 improper lists correctly. (reported by Bruno Haible)
3562 * fixed bug 313: source-transform for <fun-name> was erroneously
3563 applied to a call of a value of a variable with name <fun-name>.
3564 (reported by Antonio Menezes Leitao)
3565 * fixed bug 307: The obsolete instance protocol ensures that
3566 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3567 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3568 remove dead unknown-values globs from the middle of the stack.
3569 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3570 easier to resume long computations after using *BREAK-ON-SIGNALS*
3571 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3572 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3573 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3574 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3575 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3576 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3578 * fixed a (fairly theoretical) bug in string printing: if
3579 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3580 does not have array-element-type equal to the most general string
3582 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3583 function name. (thanks to Nikodemus Siivola)
3584 * fixed bug: compile-time format string checker failed on
3585 non-closed ~{. (reported by Thomas F Burdick)
3586 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3587 don't warn on legal loop code involving more than one aggregate
3588 boolean. (thanks to Nikodemus Siivola)
3589 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3590 in keyword position to MAKE-PACKAGE was not being reported as
3592 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3593 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3595 * fixed bugs 280 and 312: the checking for multiple definitions in a
3596 file is less likely to become confused by uses of inline
3598 * fixed bug: the #S reader macro performs the keyword coercion
3599 specified for slot names. (reported by Kalle Niemitalo)
3600 * fixed bug: lambda lists may contain symbols whose names start with
3601 & but are not lambda-list-keywords; their occurrence triggers a
3603 * fixed bug 321: define-method-combination argument lambda lists do
3604 not cause invalid code to be generated when &optional or &aux
3605 variables have default values. (reported by Bruno Haible)
3606 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3607 have CLOS classes; this appears also to have fixed reported
3608 instability in stack exhaustion detection.
3609 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3610 MUFFLE-WARNING when no associated restart is present is now
3612 * optimization: rearranged the expansion of various defining macros
3613 so that each expands into only one top-level form in a
3614 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3616 * optimization: used a previously little-used slot in symbols to
3617 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3619 * fixed some bugs revealed by Paul Dietz' test suite:
3620 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3622 ** Fixed an optimization bug related to inheritance of initforms
3623 from local to shared slots.
3624 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3625 ** CAST optimizer forgot to flush argument derived type.
3626 ** print/read consistency on floats is now orders of magnitude
3627 more likely. (thanks also to Bruno Haible for a similar report
3629 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3630 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3631 for objects of type REAL. Make it so.
3632 ** SXHASH is specified (infelicitously) to respect similarity,
3633 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3634 it so. (thanks to Markus Ziegler)
3635 ** on the Alpha, the compiler succeeds in compiling functions
3636 returning a known number of arguments greater than 63.
3637 ** fixed handling of invalid NIL arguments in keyword position
3639 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3641 ** provided a readably-printable representation for RANDOM-STATE
3643 ** ensured that pathnames, where they have a namestring, always
3644 print using #P"..." syntax.
3646 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3647 * Support for the forthcoming 2.0 version of the NetBSD kernel
3648 running on x86 hardware has been added. (thanks to Perry
3649 E. Metzger most immediately, and others for their past work)
3650 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3651 current release version; SBCL's OpenBSD support had been broken
3652 since about the time of OpenBSD's switch to ELF binary format.)
3653 * [placeholder for DX summary]
3654 ** user code with &REST lists declared dynamic-extent, under high
3655 speed or space and low safety and debug optimization policy.
3656 * The manual has been converted to Texinfo format and the debugger
3657 chapter from the cmucl manual has been added.
3658 * A facility has been added to extract documentation strings from
3659 sbcl and store them as Texinfo-formatted snippets for inclusion in
3660 the manual (via Texinfo's @include directive)
3661 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3662 the test case to Dave Roberts)
3663 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3664 pointers. (reported by Sean Ross)
3665 * bug fix: PROFILE output is printed nicely even for large numerical
3666 values. (thanks to Zach Beane)
3667 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3668 greater than 32 handle EOF correctly.
3669 * bug fix: on X86 an immediate argument of the IMUL instruction is
3670 correctly printed in disassembly. (thanks to Lutz Euler)
3671 * bug fix: class slots in redefined classes preserve their old
3672 values. (thanks to Bruno Haible and Nikodemus Siivola)
3673 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3674 succeeds. (reported by Marco Baringer)
3675 * fixed some bugs revealed by Paul Dietz' test suite:
3676 ** READ-SEQUENCE now works on ECHO-STREAMs.
3677 ** RATIONALIZE works more according to its specification. (thanks
3680 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3681 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3682 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3683 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3684 should matter to you only if you rebind the printer control
3685 variables and then find you want different bindings in the
3686 debugger than in the ordinary execution of your program.)
3687 * The runtime build system has been tweaked to support building
3688 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3689 assembler and linker. (thanks to Nikodemus Siivola)
3690 * Unbound, undefined, undeclared variables now trigger full
3691 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3692 more often programmer error than deliberate exploitation of undefined
3694 * optimization: the hash algorithm for strings has changed to one
3695 that is less vulnerable to spurious collisions. (thanks to Juho
3697 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3698 needless bounds checking. (thanks to Juho Snellman)
3699 * optimization: implemented multiplication as a modular
3700 (UNSIGNED-BYTE 32) operation on the PPC backend.
3701 * fixed some bugs revealed by Paul Dietz' test suite:
3702 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3704 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3705 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3706 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3708 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3710 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3712 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3713 their output stream on EOF from read.
3714 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3715 have been read to end-of-file.
3716 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3718 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3719 description of determination of which consecutive characters
3721 ** Printing the "Space" character with escaping on now yields "#\\ ",
3722 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3723 ** Reading floating-point numbers with *READ-BASE* set to a number
3724 less than 10 works correctly.
3725 ** Reading floating-point numbers with *READ-BASE* set to a number
3726 more than 10 works correctly.
3727 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3728 the readtable currently in effect.
3730 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3731 * minor incompatible change: parsing of namestrings on a physical
3732 (Unix) host has changed; numbers after the final #\. in a
3733 namestring are no longer interpreted as a version field. This is
3734 intented to be largely invisible to the user, except that the
3735 meaning of the namestring "*.*.*" has changed: it now refers to a
3736 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3737 should usually be replaced by
3738 (make-pathname :name :wild :type :wild :version :wild)
3739 with the added benefit that this is more likely to be portable.
3740 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3741 option to OPEN now signals an error if the file being opened
3742 exists; this may have an impact on existing code.
3743 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3744 signals received, on the PowerPC platforms (both Linux and
3745 Darwin). (thanks to Pierre Mai for pointing out the location of
3747 * several fixes on OS X: The system now builds and runs cleanly on
3748 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3749 (thanks to Brian Mastenbrook)
3750 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3751 second-resolution: integer multiples of 1/3600 between -24 and 24.
3752 (thanks to Vincent Arkesteijn)
3753 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3754 type when called with 1 argument; PEEK-CHAR checked type of
3755 PEEK-TYPE only after having read first character from a
3756 stream. (reported by Peter Graves)
3757 * bug fix: the garbage collector now has much better locality
3758 behaviour, and in particular no longer treats all memory as being
3759 exhausted when many small objects point to each other in a deeply
3761 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3762 recognized as being TYPEP their class.
3763 * bug fix: the PUSHNEW documentation string has been corrected.
3764 (thanks to Vincent Arkesteijn)
3765 * bug fix: defaulting of the value for the last of an atypically
3766 large number of multiple values being bound was not being
3767 performed correctly on the Alpha or PPC platforms
3768 * optimization: implemented multiplication as a modular
3769 (UNSIGNED-BYTE 32) operation on the x86 backend.
3770 * optimization: SEARCH on simple-base-strings can now be open-coded.
3771 (see also contrib/compiler-extras.lisp for inspiration for
3772 teaching the compiler about the Boyer-Moore algorithm).
3773 * value, returned by MAX (and MIN) called with several EQUALP, but
3774 not EQL, arguments now does not depend on compiler settings.
3775 * fixed some bugs revealed by Paul Dietz' test suite:
3776 ** in stack analysis liveness information is propagated from
3777 non-local entry points.
3778 ** pathwise CAST removing failed when the CAST node did not start
3780 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3781 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3783 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3784 host is already defined.
3785 ** RENAME-FILE works on streams instead of signalling an internal
3787 ** PEEK-CHAR uses the current readtable when determining whether
3788 or not a character is whitespace.
3789 ** MERGE-PATHNAMES handles the case when the pathname does not
3790 specify a name while the default-pathname specifies a version.
3791 ** Pathnames now stand a better chance of respecting print/read
3793 ** Attempting to use standardized file system operators with a
3794 pathname with invalid :DIRECTORY components signals a
3796 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3798 ** DIRECTORY on logical pathnames is more correct.
3799 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3800 signal a TYPE-ERROR if their argument is not a stream.
3801 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3802 designator argument does not designate a stream.
3803 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3804 examining the synonym.
3805 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3807 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3808 element-type larger than ([UN]SIGNED-BYTE 32).
3810 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3811 * When built with the :SB-FUTEX feature, threaded builds now take
3812 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3813 for faster/more reliable mutex and condition variable support.
3814 * Incompatible change (but one you probably shouldn't have been using
3815 anyway): the interface and code for arbitrating between multiple
3816 threads in the same user session has been redesigned.
3817 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3818 error when called without an explicit environment argument.
3819 (thanks to Nikodemus Siivola)
3820 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3821 confused about their position. (thanks to Adam Warner and Gerd
3823 * bug fix: Pretty printing backquoted forms with unquotations in the
3824 argument list position of various code constructs such as LAMBDA
3825 now works correctly. (reported by Paul Dietz)
3826 * bug fix: Pretty printing unquotations no longer loses all
3827 stream position information.
3828 * optimization: performance of string output streams is now less
3829 poor for multiple small sequence writes.
3830 * optimization: performance of CSUBTYPEP in the presence of complex
3831 expressions involving CONS and NOT many times has been improved.
3832 (reported by Paul Dietz)
3833 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3835 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3836 streams for the REPL, for the debugger, and so on. (thanks to
3838 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3839 * fixed some bugs revealed by Paul Dietz' test suite:
3840 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3841 is ignored if it is too small, rather than propagating through
3842 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3843 ** extremely complex negations of CONS types were not being
3844 sufficiently canonicalized, leading to inconsistencies in
3846 ** VALUES tranformer lost derived type.
3848 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3849 * fixed a bootstrapping bug: the build process no longer assumes
3850 that the various BOOLE-related constants have the same value in
3851 host and target lisps. (noted by Paul Dietz' test suite on an
3852 SBCL binary built from CLISP)
3853 * The system can now be dynamically linked on the MIPS platform,
3854 which enables dynamic loading of foreign code from Lisp. (thanks
3855 to Ralf Baechle for discussions on the MIPS ABI)
3856 * The system now records debugging information for its own source
3857 files in a filesystem-position-independent manner, relative to
3858 the "SYS" logical host.
3859 * fixed a compiler bug: MV-LET convertion did not check references
3860 to the "max args" entry point. (reported by Brian Downing)
3861 * tweaked disassembly notes to be less confident about proclaiming
3862 some instruction as an LRA. (thanks to Brian Downing)
3863 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3864 now each have their own history, command character, and other
3865 characteristics. (thanks to David Lichteblau)
3866 * fixed some bugs revealed by Paul Dietz' test suite:
3867 ** compiler failure in compiling LOGAND expressions including a
3869 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3870 shift greater than 32.
3871 ** FLUSH-DEST did not mark blocks for type check regeneration.
3872 ** HANDLER-CASE failed to accept declarations in handler clauses
3873 in some circumstances.
3875 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3876 * New code in contrib/sb-introspect (still probably not entirely
3877 stable yet) provides some support for smart Lisp development
3878 environments like SLIME.
3879 * The conditions signalled for errors occurring when loading .fasl
3880 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3881 in a way which should help ASDF recover gracefully.
3882 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3883 stuff has been cleaned up. If you code contrib/ stuff, this might
3884 affect you, and you can look at contrib/README, contrib/STANDARDS,
3885 and/or the 0.8.4.27 diff to check.
3886 * In full calls the compiler now does not generate checks for declared
3887 argument types for all arguments.
3888 * various threading fixes
3889 ** and some experimental patches which didn't make it into
3890 the main tree for this release, but which are shipped in
3891 contrib/experimental-thread.patch as a possible fix for some
3892 failures (deadlock, spinning...) in GC-intensive multithreaded
3894 * fixed PPC build problem (source code incompatibility of different
3895 library versions): added offsetof() hackery which attempts to divine
3896 where glibc maintainers put uc_mcontext today
3897 * fixed bug 282: compiler does not trust type assertions while passing
3898 arguments to a full call.
3899 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3900 &OPTIONAL VALUES type parameter.
3901 * fix bug 214: algorithm for noting rejected templates is now more
3902 similar to that of template seletion. (also reported by rydis on
3904 * fixed bug 141b: printing backquoted information readably and prettily
3905 inserts a space where necessary.
3906 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3907 (CHARACTER 10) are now reported as errors, rather than propagated
3908 as unknown types. (reported by piso on #lisp)
3909 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3910 with values NIL and :ERROR. (thanks to Milan Zamazal)
3911 * fixed bug 191c: CLOS now does proper keyword argument checking as
3912 described in CLHS 7.6.5 and 7.6.5.1.
3913 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3914 longer raise an error; further, using a list as a for-as-arithmetic
3915 counter now raises a meaningful error.
3916 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3917 now understood by sequence creation functions such as MAKE-SEQUENCE
3919 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3920 a STRING-INPUT-STREAM.
3921 * compiler enhancement: SIGNUM is now better able to derive the type
3923 * type declarations inside WITH-SLOTS are checked. (reported by
3925 * fixed some bugs revealed by Paul Dietz' test suite:
3926 ** incorrect optimization of TRUNCATE for a positive first
3927 argument and negative second.
3928 ** compiler failure in let-convertion during flushing dead code.
3929 ** compiler failure while deriving type of TRUNCATE on an
3930 interval, containing 0.
3931 ** ASH of a negative bignum by a negative bignum count now returns
3933 ** intersection of CONS types now canonicalizes properly, fixing
3934 inconsistencies in SUBTYPEP.
3936 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3937 * incompatible change: The --disable-debugger command line
3938 option now clobbers the debugger at a more fundamental
3939 level, by redefining #'INVOKE-DEBUGGER instead of by
3940 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3941 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3942 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3943 enter the debugger REPL and then suffer recursive errors
3944 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3945 while under the new system, BREAK in --disable-debugger mode
3946 terminates the system just as an unhandled error would.
3947 * fixed compiler performance when processing loops with a step >1;
3948 * bug fix: DOCUMENTATION now retrieves generic function
3949 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3950 support has been systematized, and now supports the methods
3951 specified by ANSI, along with a default method and a method for
3952 slot documentation. (reported by Nathan Froyd)
3953 * bug fix: effective methods associated with a generic function are
3954 no longer cached over a change of that generic function's method
3955 combination. (reported by Andreas Fuchs)
3956 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3957 names a non-existent directory. (thanks to Andreas Fuchs)
3958 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3959 the PPC platform, lead to stack corruption; this has been fixed.
3960 (reported by Rainer Joswig)
3961 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3962 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3963 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3964 arithmetic in general, is now much more reliable on the PPC
3966 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3967 platform now returns the right answer.
3968 * optimization: restored some effective method precomputation in
3969 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3970 precomputation is now tunable.
3971 * optimization: compiler-internal data structure use has been
3972 reviewed, and changes have been made that should improve the
3973 performance of the compiler by about 20%.
3974 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3975 simple-base-strings and simple-bit-vectors is improved.
3976 * optimization: the optimization of 32-bit logical and arithmetic
3977 functions introduced in version 0.8.3 on the x86 has been
3978 implemented on the mips, ppc and sparc platforms; an
3979 implementation of the same facility, but for 64-bit arithmetic,
3980 has been added for the alpha.
3981 * microoptimization: the compiler is better able to make use of the
3982 x86 LEA instruction for multiplication by constants.
3983 * bug fix: in some situations compiler did not report usage of
3984 generic arithmetic in (SPEED 3) policy.
3985 * bug 145b fix: compiler used wrong type specifier while converting
3986 MEMBER-types to numeric.
3987 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3989 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3990 index argument now works properly on the Alpha platform.
3991 * bug fix: floating point exception treatment on the Alpha platform
3993 * bug fix: FILE-POSITION works much better on string input and
3994 output streams. (thanks to Nikodemus Siivola)
3995 * bug fix: many threading/garbage collection symptoms sorted.
3996 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3997 might be pseudo-atomic.
3998 * internal change: Stopping for GC is now done with signals not
3999 ptrace. GC is now done in whichever thread wanted it, instead of
4001 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4003 * bug fix: result form in DO is not contained in the implicit
4005 * incompatible change: ICR structure is changed; the value part of
4006 CONTINUATION is now called LVAR; corresponding functions are
4007 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4008 * added type deriver for ISQRT (thanks to Robert E. Brown).
4009 * bug fix: better support for loading from the command line when an
4010 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4012 * fixed some bugs revealed by Paul Dietz' test suite:
4013 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4014 ** ROUND and FROUND now give the right answer when given very
4015 small float arguments.
4016 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4018 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4019 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4020 ** LCM should return a non-negative integer.
4021 ** PARSE-INTEGER returned the index of a terminator instead of the
4022 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4023 ** PARSE-INTEGER returned an incorrect index being applied to a
4025 ** LCM with two arguments of 0 returns 0 rather than signalling
4027 ** unsigned addition of a 32-bit constant with the high bit set no
4028 longer causes an internal compiler error on the x86.
4029 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4030 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4031 with negative last argument.
4032 ** byte specifiers with zero size and position no longer cause
4033 an error during type derivation.
4034 ** bignum multiplication on the Alpha platform now returns the
4036 * porting: The system now builds on SuSE AMD64, although it still
4037 generates a 32-bit binary.
4038 * .fasl file incompatibility: The fasl file version number has
4039 been incremented (because of the changes to internal compiler
4040 data structures referred to above).
4042 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4043 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4044 more accurately, on the Darwin kernel running on PowerPC hardware.
4045 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4046 * Compiler code deletion notes now signal a condition of type
4047 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4048 an associated MUFFLE-WARNING restart.
4049 * The compiler now performs limited argument count validation of
4050 constant format strings in FORMAT, and where appropriate in ERROR,
4051 CERROR and WARN. (thanks to Gerd Moellmann)
4052 * New ASDF-INSTALL contrib can be used for automatic download and
4053 installation of third-party Lisp code from CCLAN or other sites
4055 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4056 which forces another thread to execute a function supplied by the
4058 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4059 now accept and act upon their :ELEMENT-TYPE keyword argument.
4060 (reported by Martin Atzmueller, Edi Weitz)
4061 * bug fix: FILE-POSITION now accepts position designators up to
4062 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4063 is the greater. (thanks to Patrik Nordebo)
4064 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4065 Kalle Olavi Niemitalo)
4066 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4067 printable. (reported by Eric Marsden)
4068 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4069 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4070 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4071 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4072 (thanks to Stig Sandoe)
4073 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4074 UNREAD-CHAR now correctly includes the unread character in the
4075 target sequence. (thanks to Gerd Moellmann)
4076 * bug fix in threaded builds: the system can now be suspended and
4077 resumed by shell job control with minimal disruption.
4078 * bug fixes in times and timezones >2038AD
4079 * better handling of "where is GNU make?" problem in build scripts
4080 (thanks to Nikodemus Siivola)
4081 * new optimization: inside a named function any reference to a
4082 function with the same name is considered to be a self-reference;
4083 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4084 optimization quality.
4085 * new optimization on x86: logical functions and + now have
4086 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4087 used when the result is truncated to 32 bits.
4088 * VALUES declaration is partially enabled.
4089 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4090 * fixed some bugs revealed by Paul Dietz' test suite:
4091 ** The system now obeys the constraint imposed by
4092 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4093 types form a lattice under type intersection.
4094 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4095 ** ASSOC now ignores NIL elements in an alist.
4096 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4097 and (1+ MOST-POSITIVE-FIXNUM) answers.
4098 ** The addition of a method with invalid qualifiers to a generic
4099 function does not cause an error to be signalled immediately;
4100 a warning is signalled, and the error is generated only on
4101 calling the generic function.
4102 * changed .fasl file version number, in part to add type codes for
4103 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4104 obscure ANSI requirements
4106 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4107 * fixed bug 148: failure to inline-expand a local function left
4108 garbage, confusing the compiler.
4109 * fixed bugs 3cd: structure slot readers perform type check if the
4110 slot can have an invalid value (i.e. it is either not initialized
4111 or can be written with a less specific slot writer).
4112 * bug fix: the compiler now traps array references to elements off
4113 the end of an array; previously, the bounds checking in some
4114 circumstances could go off-by-one.
4115 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4117 * type declarations for array element types now obey the description
4118 on the CLHS page "Declaration TYPE", as per discussions on
4119 sbcl-help around 2003-05-08. This means that a declaration
4120 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4121 declaration, all references to BAR will be asserted or assumed
4122 (with THE, so dependent on compiler policy) to involve objects of
4123 type FOO. Note that no such declaration is implied in
4124 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4125 * declared types of functions from the "Conditions"
4126 chapter. (reported by Paul Dietz)
4127 * bug fix: CERROR accepts a function as its first argument.
4128 * bug fix: NTH an NTHCDR accept a bignum as index
4129 arguments. (reported by Adam Warner)
4130 * optimization: character compare routines now optimize comparing
4131 against a constant character. (reported by Gilbert Baumann)
4132 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4133 argument now works properly on the MIPS platform.
4134 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4135 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4136 declared to have a functional type, does not cause an error
4138 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4139 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4140 * fixed bug: if last continuation of a deleted block has a
4141 destination, this destination should be deleted too. (reported by
4143 * fixed a bug in the bootstrap process: the host compiler's values
4144 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4145 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4146 test case from Patrik Nordebo)
4147 * improved the ability of the disassembler on the PPC platform to
4148 provide helpful disassembly notes.
4149 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4150 the class in more cases than previously.
4151 * bug fix: FILE-POSITION now understands :START and :END for
4152 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4153 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4154 8) data. (thanks to David Lichteblau)
4155 * bug fix: it is possible to add a method to a generic function
4156 without lambda list.
4157 * bug fix: reader failed to signal END-OF-FILE inside an
4158 object representation. (reported by Nikodemus Siivola)
4159 * fixed some bugs revealed by Paul Dietz' test suite:
4160 ** LAST and [N]BUTLAST should accept a bignum.
4161 ** condition slot accessors are methods.
4162 ** (VECTOR NIL) is a subtype of STRING.
4164 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4165 * minor incompatible change: some nonsensical specialized lambda
4166 lists (used in DEFMETHOD) which were previously ignored now signal
4168 * minor incompatible change: the system is now aware of the types of
4169 variables in the COMMON-LISP package, and will signal errors for
4170 most violations of these type constraints (where previously they
4171 were silently accepted).
4172 * minor incompatible change: COMPILE-FILE now uses the freedom
4173 afforded (ANSI 3.2.2.3) to use derived function types for
4174 functions defined in the same file. This also permits the system
4175 to warn on static type mismatches and function
4176 redefinition. (Currently it does not work with high DEBUG level.)
4177 * minor incompatible change: VALUES declaration is disabled.
4178 * When issuing notes, the compiler now signals a condition of type
4179 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4180 restart for use in user handlers. It is expected that the
4181 COMPILER-NOTE condition will eventually become a condition
4182 supertype to a hierarchy of note types, which will then be
4183 handleable in a similar fashion. However, at the moment, no such
4184 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4185 but it's an implementation detail, not a classification for the
4187 * Changes in type checking closed the following bugs:
4188 ** type checking of unused values (192b, 194d, 203);
4189 ** template selection based on unsafe type assertions (192c, 236);
4190 ** type checking in branches (194bc).
4191 * A short form of VALUES type specifier has ANSI meaning (it has
4192 increased the number of situations when SBCL cannot perform type
4194 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4195 keywords or constants is permissible.
4196 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4197 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4198 classes. (thanks to Antonio Martinez)
4199 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4200 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4201 argument to a pretty-print stream. Instead, it leaves any such
4202 operations to DESCRIBE-OBJECT methods.
4203 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4205 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4206 lambda lists. (thanks to David Lichteblau)
4207 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4208 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4209 (thanks to Gerd Moellmann)
4210 * fixed bug 246: increased compilation speed of long
4211 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4213 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4215 * DEFCONSTANT now throws a condition of type
4216 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4217 constant to a non-EQL value; CONTINUE and ABORT restarts
4218 respectively change and preserve the value.
4219 * fixed bug 63: The code walker, part of the implementation of CLOS,
4220 is now better at handling symbol macros.
4221 * bug fix: There is no longer an internal implementation type named
4222 CL:LENGTH. (reported by Raymond Toy)
4223 * bug fix: In macro-like defining macros/special operators the
4224 implicit block does not enclose the lambda list.
4225 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4226 enclosed in parentheses) are not suitable as type specifiers, and
4227 their use properly signals an error now.
4228 * bug fix: An argument count mismatch for a type specifier in code
4229 being compiled no longer causes an unhandled error at compile
4230 time, but signals a compile-time warning.
4231 * fixed simple vector readable printing
4232 * bug fix: DESCRIBE takes more care over whether the class
4233 precedence list slot of a class is bound before accessing it.
4234 (reported by Markus Krummenacker)
4235 * bug fix: FORMATTER can successfully compile pretty-printer format
4236 strings which use variants of the ~* directive inside.
4237 * bug fix: SEARCH now applies its TEST predicate to the elements of
4238 the arguments in the correct order. (thanks to Wolfhard Buss)
4239 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4240 in type inference. (thanks to Robert E. Brown)
4241 * bug fix: Reading in symbols with an explicit package name of ""
4242 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4243 * fixed some bugs revealed by Paul Dietz' test suite:
4244 ** NIL is now allowed as a structure slot name.
4245 ** Arbitrary numbers, not just REALs, are allowed in certain
4246 circumstances in LOOP for-as-arithmetic clauses.
4247 ** Multiple class redefinitions before slot access no longer
4248 causes a type error.
4249 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4250 association between the name and a class.
4251 ** Generic functions with non-standard method-combination and over
4252 five methods all of which return constants no longer return NIL
4253 after the first few invocations. (thanks to Gerd Moellmann)
4254 ** CALL-NEXT-METHOD with no arguments now passes the original
4255 values of the arguments, even in the presence of assignment.
4256 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4258 ** DISASSEMBLE works with closures and funcallable instances.
4259 ** ADD-METHOD now returns the generic function, not the new method.
4260 ** FIND-METHOD signals an error if the lengths of the specializers
4261 is incompatible with the generic function, even if the ERRORP
4263 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4264 which its argument is a member.
4265 ** DEFCLASS only redefines the class named by its class-name
4266 argument if that name is the proper name of the class;
4267 otherwise, it creates a new class.
4268 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4269 of the UNBOUND-SLOT condition to the name of the slot.
4270 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4271 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4272 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4273 SLOT-MAKUNBOUND in the specified fashion.
4275 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4276 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4277 cross-compilation host. As a consequence, we can now bootstrap our
4278 way up to SBCL starting with a bare gcc toolchain and human-readable
4279 source code (first the source to CLISP, then the source to SBCL).
4280 * A contributed module containing a partial implementation of the
4281 simple-streams interface has been included. (thanks to Rudi
4283 * A contributed module implementing the RFC1321 Message Digest
4284 Algorithm, known as MD5, has been included.
4285 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4286 no longer has any effect, as the code controlled by this feature
4287 has been deleted. (As far as we know, no-one has ever built using
4288 this feature, and its semantics were confused in any case).
4289 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4290 work on conditions (as required by the ANSI specification),
4291 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4292 expected behaviour on conditions. Users should note, however,
4293 that such behaviour is not required by the ANSI specification,
4294 and so use of this behaviour may render their code unportable.
4295 * fixed some bugs revealed by Paul Dietz' test suite:
4296 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4298 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4299 ** SXHASH on condition objects no longer returns NIL.
4300 ** :ALLOCATION :CLASS slots are better treated; their values are
4301 updated on class redefinition, and initforms inherited from
4302 superclasses are applied.
4303 ** REMOVE-METHOD returns its generic function argument even when
4304 no method was removed.
4305 ** SHARED-INITIALIZE now initializes the values of the requested
4306 slots, including those with :ALLOCATION :CLASS.
4307 ** ALLOCATE-INSTANCE now works on structure classes defined via
4308 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4310 ** SLOT-EXISTS-P now works on conditions, as well as structures
4312 ** MAKE-LOAD-FORM now has the required methods on
4313 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4314 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4315 keyword, and now implements the SLOT-NAMES argument.
4316 ** methods with &OPTIONAL arguments no longer allow too many
4317 arguments to be passed in the call without error.
4318 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4319 option is consistent with the required arguments of the generic
4320 function lambda list.
4321 * bug fix: REQUIRE accepts a string designator. (Thanks to
4323 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4324 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4325 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4326 * bug fix: The compiler now checks for duplicated variables in macro
4328 * bug fix: SETQ on globals returns the correct value.
4329 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4330 not a COMPILER-ERROR (followed by some other strange error on
4331 choosing the CONTINUE restart).
4332 * bug fix: make.sh and friends are now more consistent in the way that
4333 they look for GNU "make".
4335 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4336 * experimental native threads support (on x86 Linux >=2.4 only).
4337 This is not compiled in by default: you need to add :SB-THREAD to
4338 the target features. See the "Beyond ANSI" chapter of the manual
4340 * fix for longstanding nonANSIism: The old distinction between
4341 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4342 The return value from CL:FIND-CLASS is now a CLOS class, and
4343 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4344 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4345 * An interface to the MetaObject Protocol, as described in Kiczales,
4346 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4347 MIT Press, 1991, is available from the SB-MOP package.
4348 * incompatible change: the SB-PCL package should now be considered
4349 a private implementation detail, and no longer a semi-private MOP
4351 * minor incompatible change: due to rearrangement for threads, the
4352 control stack and binding stack are now allocated at arbitrary
4353 addresses instead of being hardcoded per-port. Users affected by
4354 this probably have to be doing advanced things with shared
4355 libraries, and will know who they are.
4356 * minor incompatible change: Previously, all --eval forms used were
4357 processed with READ before any of them were processed with EVAL.
4358 Now each --eval form is processed with both READ and EVAL before
4359 the next --eval form is processed. (Thus package operations like
4360 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4361 work as the user might reasonably expect.)
4362 * minor incompatible change: *STANDARD-INPUT* is now only an
4363 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4365 * minor incompatible change: Y-OR-N-P is now character-oriented,
4366 not line oriented. Also, YES-OR-NO-P now works without errors.
4367 (thanks to Antonio Martinez)
4368 * sb-aclrepl module improvements: an integrated inspector, added
4369 repl features, and a bug fix to :trace command.
4370 * Known functions, which cannot be open coded by the backend, are
4371 considered to be able to check types of their arguments. (fixing
4372 a bug report by Nathan J. Froyd)
4373 * fixed a bug in computing method discriminating functions: It is
4374 now possible to define methods specialized on classes which have
4375 forward-referenced superclasses. (thanks to Gerd Moellmann)
4376 * fixed evaluation order in optional entries (reported by Gilbert
4378 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4379 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4380 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4381 required-by-AMOP NAME argument, as well as CLASS and
4382 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4383 * fixed bug 20: DEFMETHOD can define methods using names that are
4384 not the proper names of classes to designate class specializers.
4385 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4386 Unix file descriptors, instead of blowing up. (thanks to Antonio
4388 * Garbage collection refactoring: user-visible change is that a
4389 call to the GC function during WITHOUT-GCING will not do garbage
4390 collection until the end of the WITHOUT-GCING. If you were doing
4391 this you were probably losing anyway.
4392 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4393 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4394 TYPEP the latter but not the former.
4395 * The compiler issues a full WARNING for calls to undefined functions
4396 with names from the CL package.
4397 * MAP-INTO for a vector destination is open coded. (reported by
4398 Brian Downing on c.l.l)
4399 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4400 documentation string.
4401 * fixed some bugs revealed by Paul Dietz' test suite:
4402 ** COPY-ALIST now signals an error if its argument is a dotted
4404 ** Condition slots are now accessed more correctly in the presence
4405 of multiple initargs for a given slot.
4406 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4407 exclude restarts of the same name associated with a different
4409 ** DEFCLASS of forward-referenced classes with another
4410 forward-referenced class in the superclasses list no longer
4412 ** Condition slots are now initialized once each, not multiple
4413 times. (thanks to Gerd Moellmann)
4414 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4416 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4417 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4418 arguments contain duplicated elements.
4419 ** RESTART-CASE understands local macros.
4420 ** RESTART-CASE associates exactly its own restarts with a condition.
4421 ** ENDP in safe mode checks its argument to be of type LIST.
4422 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4423 in question is unbound.
4424 ** Optimized MAKE-INSTANCE functions no longer cause internal
4425 assertion failures in the presence of duplicate initargs.
4426 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4427 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4428 propagated even in the ctor optimized implementation of
4430 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4432 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4433 * a better implementation of SXHASH on (simple) bit vectors,
4434 measured both in execution speed and in distribution of results
4435 over the positive fixnums, has been installed. Likewise, a better
4436 implementation of EQUAL for simple bit vectors is now available.
4437 * fixed CEILING optimization for a divisor of form 2^k.
4438 * fixed bug 240 (emitting extra style warnings "using the lexical
4439 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4440 by Antonio Martinez)
4441 * fixed SXHASH, giving different results for NIL depending on type
4442 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4443 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4444 variable. (found by Rolf Wester)
4445 * SBCL does not ignore type declarations for special
4446 variables. (reported by rif on c.l.l 2003-03-05)
4447 * some bug fixes in contrib/sb-aclrepl/
4448 * fixed some bugs revealed by Paul Dietz' test suite:
4449 ** a bug in the CONS type specifier, whereby the CAR and CDR
4450 types got intertwined, has been fixed;
4451 ** the type system is now able to reason about the interaction
4452 between INTEGER and RATIO types more completely;
4453 ** APPEND, [N]REVERSE and NRECONC check that those their
4454 arguments, which must be proper lists, are really so;
4455 ** An array specialized to be unable to hold elements has been
4456 implemented, as required -- yes, really -- by ANSI;
4457 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4458 on malformed property lists;
4460 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4461 * incompatible packaging change: in line with Unix convention,
4462 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4463 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4464 * REQUIRE and PROVIDE are now optionally capable of doing something
4465 useful. See the documentation string for REQUIRE.
4466 * infrastructure for a managed SBCL contrib system: contributed
4467 modules in this release include:
4468 ** the ASDF system definition facility;
4469 ** an interface to the BSD Sockets API;
4470 ** an ACL-like convenience interface to the repl;
4471 (thanks to Kevin Rosenberg)
4472 ** an implementation of ROTATE-BYTE, with efficient implementation
4474 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4475 gives a closer approximation to the right answer than previously.
4476 (thanks to Raymond Toy)
4477 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4478 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4479 optional environment arguments, as required by ANSI.
4480 * fixed bugs in other functions taking environment objects, allowing
4481 calls with an explicit NIL environment argument to be compiled
4483 * fixed bug 228: primary return values from
4484 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4485 COMPILE or FUNCTION.
4486 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4487 :TYPE will no longer signal errors on innocuous objects.
4488 * fixed bug 231b: SETQ is better at respecting type declarations in
4489 the lexical environment.
4490 * fixed a bug in DEFCLASS: classes named by symbols with no or
4491 unprintable packages can now be defined.
4492 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4493 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4494 * fixed compiler failure related to checking types of functions.
4495 (reported by Robert E. Brown)
4496 * the compiler is now much more consistent in its error-checking
4497 treatment of bounding index arguments to sequence functions: in
4498 (SAFETY 3) code, errors will be signalled in almost all cases if
4499 invalid sequence bounding indices are passed to functions defined
4500 by ANSI to operate on sequences.
4501 * fixed a bug in the build procedure: documentation of SBCL-specific
4502 packages is now preserved and available in the final Lisp image.
4503 * lifted FDEFINITION lookup out of loops in the implementation of
4504 many list operations. (thanks to Robert E. Brown)
4505 * fixed a bug in the reader: the #n# reader macro now works for
4506 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4507 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4508 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4509 E. Brown and Tony Martinez respectively)
4510 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4511 SLOT-BOUNDP: in particular, it is now able to optimize them much
4512 better, and is now not vulnerable to having packages renamed.
4513 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4514 always called when a slot is not present in an instance. (thanks
4516 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4517 longer signal an error on unreading a character following EOF on
4518 the previous constituent stream. (thanks to Tony Martinez)
4519 * fixed some bugs revealed by Paul Dietz' test suite:
4520 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4521 not just nonnegative fixnums;
4522 ** the logical bit-array operators such as BIT-AND now accept an
4523 explicit NIL for their "opt-arg" argument (to indicate a
4524 freshly-consed result bit-array);
4525 ** ELT now signals an error on an invalid sequence index in safe
4527 ** the type system is now cleverer about negations of numeric
4528 types, and consequently understands the BIGNUM and RATIO types
4530 ** the type system is now cleverer about the interaction between
4531 INTEGER and RATIO types: while bugs still remain, many more
4532 cases are accurately computed;
4533 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4534 if it is in the last clause;
4535 ** CONSTANTLY now correctly returns a side-effect-free function in
4537 ** DECLARE is no longer treated as a special-operator; in
4538 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4539 * incremented fasl file version number due to the change in the
4540 DEFSTRUCT-SLOT-DESCRIPTION structure.
4542 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4543 * minor incompatible change: code processed by the "interpreter" or
4544 EVAL now has a compilation optimization policy of (DEBUG 2)
4545 (changed from (DEBUG 1)) to improve debuggability of interactive
4546 development, and to allow the use of the debug RETURN command in
4548 * an experimental implementation of the RETURN command for the
4549 debugger has been included. (thanks to Frederik Kuivinen)
4550 * fixed bug 62: constraints were not propagated into a loop.
4551 * fixed bug in embedded calls of SORT (reported and investigated by
4553 * fixed some bugs revealed by Paul Dietz' test suite:
4554 ** printing and reading of arrays with some dimensions having
4555 length 0 (thanks to Gerd Moellmann);
4556 ** BOA constructor with &AUX argument without a default value does
4557 not cause a type error;
4558 ** CONSTANTP now returns true for all self-evaluating objects.
4560 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4561 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4562 accessors that are related by inheritance, as specified in the
4563 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4564 Valtteri Vuorikoski)
4565 * The compiler is now able to inline functions that were defined in
4566 a complex lexical environment (e.g. inside a MACROLET).
4567 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4569 * Support for the upcoming FreeBSD-5.0 release has been included.
4570 (thanks to Dag-Erling Smorgrav)
4571 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4572 effect when it is not in a toplevel context.
4573 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4574 stand a better chance of being correct. (thanks to Gerd
4576 * fixed bug in COERCE, which now signals an error on coercing a
4577 rational to a bounded real type which excludes the expected
4579 * The compiler is now able to derive types more accurately from the
4580 COERCE and COMPILE functions.
4581 * fixed bug 223: functional binding is considered to be constant
4582 only for symbols in the CL package.
4583 * fixed bug 231: SETQ did not check the type of a variable being set
4584 (reported by Robert E. Brown)
4585 * A new optimization for MAKE-INSTANCE has been included, fixing
4586 various bugs (including relating to :ALLOCATION :CLASS slots and
4587 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4589 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4590 ** As required by ANSI, LOOP now disallows anonymous collection
4591 clauses such as COLLECT I in conjunction with aggregate boolean
4592 clauses such as THEREIS (= I 1);
4593 ** LOOP now signals an error when any variable is reused in the
4594 same loop (including the potentially useful construct analogous
4595 to WITH A = 1 WITH A = (1+ A);
4596 ** IT is only a special loop symbol within the first clause of a
4597 conditional loop clause;
4598 ** LOOP with a typed iteration variable over a hashtable now
4599 signals a type error iff it should.
4600 * fixed some other bugs revealed by Paul Dietz' test suite:
4601 ** FILE-STREAM now names the class previously known as FD-STREAM;
4602 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4603 argument) no longer signals an error;
4604 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4605 of the slot symbol, rather than using the current package
4606 ((:CONC-NAME "") continues to intern the slot's name in the
4608 * incremented fasl file version number, because of the incompatible
4609 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4610 of the new implementation of DEFINE-COMPILER-MACRO.
4612 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4613 * Support for building SBCL for MIPS platforms running in
4614 little-endian mode has now been checked in, and basic
4615 functionality on said platforms verified.
4616 * minor incompatible change: PCL now records the pathname of a file
4617 in which methods and the like are defined, rather than its
4619 * minor incompatible change: TRUENAME now considers the truename of
4620 a file naming a directory to be the pathname with :DIRECTORY
4621 component indicating that directory.
4622 * minor incompatible change: a NAMED clause in the extended form of
4623 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4624 reason for the previous behaviour is unclear.
4625 * more systematization and improvement of CLOS and MOP conformance
4626 in PCL (thanks to Gerd Moellman and Pierre Mai):
4627 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4629 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4630 primary methods with no specializers;
4631 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4633 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4634 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4635 FORWARD-REFERENCED-CLASSes; error reporting on
4636 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4638 ** SXHASH on CLOS instances now uses a slot internal to the
4639 instance to return different numbers on distinct instances,
4640 while preserving the same return value through invocations of
4642 ** DEFMETHOD signals errors when methods with longer incongruent
4643 lambda lists are added to generic functions;
4644 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4645 CLASS, as specified in AMOP;
4646 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4647 on the order returned by the primary method for classes of
4648 class STANDARD-CLASS;
4649 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4650 * fixed some bugs shown by Paul Dietz' test suite:
4651 ** DOLIST puts its body in TAGBODY;
4652 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4654 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4655 value producing form;
4656 ** if more variables are given to PROGV than values, extra
4657 variables are bound and made to have no value;
4658 ** NSUBSTITUTE on list arguments gets the right answer with
4660 ** ELT signals an error of type TYPE-ERROR when the index argument
4661 is not a valid sequence index;
4662 ** LOOP signals (at macroexpansion time) an error of type
4663 PROGRAM-ERROR when duplicate variable names are found;
4664 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4665 ** FUNCALL of special-operators now cause an error of type
4667 ** PSETQ now works as required in the presence of side-effecting
4668 symbol-macro places;
4669 ** NCONC accepts any object as its last argument;
4670 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4672 ** loop-for-as-package does not require a package to be explicitely
4674 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4676 * fixed bug 166: compiler preserves "there is a way to go"
4677 invariant when deleting code.
4678 * fixed bug 172: macro lambda lists with required arguments after
4679 &REST arguments now cause an error to be signalled. (thanks to
4681 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4682 bug. (thanks to Matthew Danish)
4683 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4685 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4686 arguments are lexically rebound. (thanks to Gerd Moellmann and
4688 * fixed bug 194: error messages are now more informative when there
4689 is no primary method applicable in a call to a generic
4690 function. (thanks to Gerd Moellmann)
4691 * fixed bug in command line argument checking (thanks to Julian
4693 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4694 (thanks to Matthew Danish)
4695 * incremented fasl file version number, because of the
4696 SXHASH-related changes in the layout of CLOS data structures
4698 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4699 * minor incompatible change: The runtime (the Unix executable named
4700 "sbcl") is now much pickier about the .core files it will load.
4701 Essentially it now requires .core files to descend from the same
4702 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4703 as the runtime does. (The intent is to prevent the crashes which
4704 can occur, and which can even be reported as mysterious failures,
4705 when people patch the sources or change the build parameters
4706 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4707 sbcl and .core files.)
4708 * fixed bug: VALUES-LIST is no longer optimized away.
4709 * fixed bug 142: The FFI conversion of C string values to Lisp
4710 string values no longer conses excessively. (thanks to Nathan
4711 Froyd porting Raymond Toy's fix to CMU CL)
4712 * began to systematize and improve MOP conformance in PCL (thanks to
4713 Nathan Froyd, Gerd Moellman and Pierre Mai):
4714 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4716 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4717 ** FINALIZE-INHERITANCE is now called on class finalization;
4718 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4719 argument precedence order.
4720 * fixed bug 202: The compiler no longer fails on functions whose
4721 derived types contradict their declared type.
4722 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4723 so it can be non-toplevel.
4724 * The fasl file version number has changed (because of the new
4725 implementation of DEFMACRO).
4726 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4727 safe code, that any length requirement by their type-specifier
4728 argument is valid. The exceptions to this are described in bug
4730 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4731 functions now check the types of their inputs as required by ANSI.
4732 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4733 introduced symbol is DECLAREd to be SPECIAL.
4734 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4735 * fixed bug: :COUNT argument to sequence functions may be negative
4736 * fixed bug: body of DO-SYMBOLS may contain declarations
4737 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4738 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4739 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4740 symbol macro only once
4741 * fixed printing of call frame when argument list is unavailable
4742 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4743 * compiler no longer signals WARNING on unknown keyword
4746 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4747 * A beta-quality port to the mips architecture running Linux,
4748 based on the old CMUCL backend, has been made. It has been tested
4749 on a big-endian kernel, and works sufficiently well to be able to
4750 rebuild itself; it has not been tested in little-endian mode.
4751 * fixed an inconsistency between gencgc.c and purify.c which made
4752 dumping/loading .core files unreliable
4753 * fixed bug 120a: The compiler now deals correctly with IFs where
4754 the consequent is the same as the alternative, instead of
4755 misderiving the return type. (thanks to Alexey Dejneka)
4756 * fixed bug 113: Logical pathnames are now dumpable (the logical
4757 host is resolved at load-time, throwing an error if it is not
4759 * fixed bug 174: FORMAT's error message is slightly clearer when a
4760 non-printing character is used in a format directive.
4761 * fixed several bugs in compiler checking of type declarations, i.e.
4762 violations of the Python "declarations are assertions" principle
4763 (thanks to Alexey Dejneka)
4764 * fixed several bugs in PCL's error checking (thanks to Gerd
4766 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4768 * fixed bug in compilation of functions as first class values
4769 (thanks to Antonio Martinez-Shotton)
4770 * The compiler's handling TYPE-ERRORs which it can prove will
4771 inevitably happen at runtime has been cleaned up and corrected
4772 in several ways. (thanks to Alexey Dejneka)
4773 * improved argument type checking for various basic arithmetic
4774 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4775 lavished on them in the past that they can be compiled in many
4776 ways in different special cases
4777 * fixed bug 181: compiler checks validity of user supplied type
4779 * cleaned up code flushing in optimization: Function calls which
4780 should signal errors for safety purposes (e.g. which ANSI says
4781 should signal errors when their arguments are of incorrect type)
4782 are no longer optimized away.
4783 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4784 * incremented fasl file version number, because changes in the
4785 implementation of sequence functions like COERCE caused
4786 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4787 in old inline expansions) to become undefined. (Actually these
4788 changes were later undone, so we might very well be binary
4789 compatible with 0.7.7 after all, but leaving the version number
4790 incremented seemed like the simplest and most conservative
4793 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4794 * An alpha-quality port to the parisc architecture running Linux,
4795 based on the old CMUCL backend, has been made. This, even more so
4796 than the other backends, should be considered still a work in
4797 progress; known problems include that the Linux kernel in 64-bit
4798 mode does not propagate the correct sigcontext structure to
4799 userspace, and consequently SBCL on a parisc64 kernel will not
4801 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4802 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4803 suppressed.) Also now that the compiler is looking at declarations
4804 in the environment, it checks optimization declarations as well,
4805 and suppresses inlining when (> DEBUG SPEED).
4806 * More fixes have been made to treatment of floating point exception
4807 treatment and other Unix signals. In particular, floating point
4808 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4809 * The detection and handling of control stack exhaustion (infinite
4810 or very deeply nested recursion) has changed. Stack exhaustion
4811 detection is now done by write-protecting pages at the OS level
4812 and applies at all optimization settings; when found, a
4813 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4814 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4815 be caught using IGNORE-ERRORS.
4816 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4817 correctly when transforming recursive LABELS functions to LETs.
4818 (thanks to Alexey Dejneka)
4819 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4820 that are names of constants or global variables.
4821 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4822 alien routines with docstrings.
4823 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4824 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4826 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4827 (thanks to Eric Marsden)
4828 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4829 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4830 * Bug fix: The SPARC backend can now compile functions involving
4831 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4832 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4833 to a functions expecting a PATHNAME-DESIGNATOR.
4834 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4835 lambda lists. (thanks to Alexey Dejneka)
4836 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4837 functions so that EXPORTing the name of the class doesn't cause
4838 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4839 to Antonio Martinez for reporting this)
4840 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4841 constant-folded without failing an assertion. (thanks to Einar
4842 Floystad Dorum for reporting this)
4843 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4844 types are now dealt with more correctly by the compiler.
4845 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4846 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4847 behaviour analogous to RENAME-FILE. This puts its behaviour more
4848 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4850 * The fasl file version number has changed again. (because of the
4851 bug fix involving the names of PCL MAKE-INSTANCE functions)
4853 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4854 * bug fix: Floating point exceptions are treated much more
4855 consistently on the x86/Linux and PPC/Linux platforms.
4856 * Array initialization with :INITIAL-ELEMENT is now much faster for
4857 cases when the compiler cannot open code the array creation, but
4858 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4859 array accesses have also seen a speed increase.
4860 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4861 specified. (This was at the root of some bad interactions between
4862 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4864 * bug fix: Internal error arguments for undefined functions are now
4865 computed correctly on the PPC/Linux platform.
4866 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4867 Raymond Toy's patch for CMU CL)
4868 * Support for the Solaris 9 operating environment has been included
4869 (thanks to Daniel Merritt)
4870 * A very ugly but hopefully complete draft of the missing FFI chapter
4871 of the manual has been created by reformatting the corresponding
4872 CMU CL manual chapter into (currently very ugly and incoherent)
4873 DocBook and bringing it up to date for SBCL behavior. Thus, the
4874 manual is now essentially complete, at least by my extreme
4875 once-and-only-once standards, whereby it's acceptable to refer to
4876 the doc strings of SB-EXT functions as the primary documentation.
4877 * The fasl file version number has changed again, due to cleanup of
4878 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4879 is no longer a static symbol.)
4881 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4882 * SBCL now builds with OpenMCL (version 0.12) as the
4883 cross-compilation host; also, more progress has been made toward
4884 bootstrapping under CLISP.
4885 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4887 * bug 158 fixed: The compiler can now deal with integer loop
4888 increments different from 1; fixing this turned out also to fix
4890 * bug 169 fixed: no more bogus warnings about using lexical bindings
4891 despite the presence of perfectly good SPECIAL declarations (thanks
4892 to David Lichteblau)
4893 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4894 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4895 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4897 * bug 180 fixed: Method combination specifications no longer ignore
4898 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4899 * bug fix: Structure type predicate functions now check their argument
4900 count as they should.
4901 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4902 correctly. (thanks to Pierre Mai)
4903 * minor incompatible change: The --noprogrammer option is deprecated
4904 in favor of the new --disable-debugger option, which is very similar.
4905 (The major difference is that it takes effect at a slightly different
4906 time at startup, causing handling of errors in --sysinit and
4907 --userinit files will be affected differently.) The
4908 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4909 been added to allow this functionality to be controlled from ordinary
4910 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4911 maintainers, who might want to run non-interactive scripts to
4912 build SBCL cores which will later be used interactively.)
4913 * minor incompatible change: The LOAD function no longer, when given
4914 a wild pathname to load, loads all files matching that pathname.
4915 Instead, an error of type FILE-ERROR is signalled.
4917 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4918 * bug 147 fixed: The compiler preserves its block link/count
4919 invariants more correctly now so that it doesn't crash. (thanks
4921 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4923 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4924 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4925 no-value-for-this-character as NIL (as specified by ANSI).
4926 * HOST-NAMESTRING on physical pathnames now returns a string that is
4927 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4928 (thanks to Christophe Rhodes)
4929 * The Alpha port handles icache flushing more correctly. (thanks to
4931 * More progress has been made toward bootstrapping under CLISP. (thanks
4932 to Christophe Rhodes)
4933 * The fasl file format has changed again, because dynamic loading
4934 on OpenBSD (which has non-ELF object files) motivated some cleanups
4935 in the way that foreign symbols are transformed and passed around.
4936 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4937 is no longer treated as whitespace by the reader, but instead as
4938 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4939 |A
\7fB|, instead of A as it used to.
4941 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4942 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4943 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4944 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4945 this as of 0.7.1.45, but was left out of the previous news section
4946 (thanks to Dan Barlow)
4947 * SBCL now runs on the Solaris operating system on SPARC architectures
4948 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4949 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4950 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4951 * SPARC backend cleanups, allowing builds of cores optimized for V8
4952 and V9 SPARCS, and also emission of code targeted to a particular
4953 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4955 * SBCL is closer to bootstrapping under CLISP, thanks to various
4956 fixes by Christophe Rhodes.
4957 * The fasl file format has changed again, to allow the compiler's
4958 INFO database to support symbol macros.
4959 * The user manual (in doc/) is formatted into HTML more nicely.
4960 (thanks to coreythomas)
4961 * The system is smarter about SUBTYPEP relationships, especially
4962 those involving NOT types (including types such as ATOM which are
4963 represented internally using NOT types). Thus SUBTYPEP is less
4964 likely to return (VALUES NIL NIL) in general, and in particular
4965 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4967 * The fasl file format has changed again, because the internal
4968 representation of types now includes a new slot to support the new
4969 SUBTYPEP-of-NOT-types logic.
4970 * (not a change in the main branch of SBCL, but a related prototype
4971 which can hopefully be merged into the main branch of SBCL in the
4972 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4973 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4974 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4975 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4976 dispatch macro character combinations. (thanks to Alexey Dejneka)
4977 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4978 that superficially look like logical namestrings correctly.
4979 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4981 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4982 default supplied-p) for &optional and &key arguments. (thanks to
4985 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4986 * incompatible change: The compiler is now less aggressive about
4987 tail call optimization, doing it only when (> SPACE DEBUG) or
4988 (> SPEED DEBUG). (This is an incompatible change because there are
4989 programs which relied on the old CMU-CL-style behavior to optimize
4990 away their unbounded recursion which will now die of stack overflow.)
4991 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4992 for non-GENCGC systems has been increased to 20M (since that
4993 seems much closer to the likely performance optimum for modern
4994 systems than the old 4M value was)
4995 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4996 and *DEBUG-PRINT-LEVEL*
4997 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4998 of CMU CL's support for SPARC, and various endianness and other
4999 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5000 * new syntactic sugar for the Unix command line: --load foo.bar is now
5001 an alternate notation for --eval '(load "foo.bar")'.
5003 ** The system now detects stack overflow and handles it gracefully,
5004 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5005 optimization settings. (This is a good thing in general, and
5006 its introduction in this version should be particularly timely
5007 for anyone whose code fails because of suppression of tail
5009 ** The system now hunts for the C variable "environ" in a more
5010 devious way, to avoid segfaults when the C library version differs
5011 between compile time and run time. (thanks to Christophe Rhodes)
5012 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5013 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5014 ** The compiler no longer issues bogus style warnings for undefined
5015 classes in the same source file as the DEFCLASSes which defined
5016 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5018 ** fixes in CONDITION class precedence list for undefined function
5019 errors (thanks to Alexei Dejneka)
5020 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5021 correctly. (thanks to Dan Barlow)
5022 ** portability fixes aiming at bootstrapping under CLISP (thanks
5023 to Dave McDonald and Christophe Rhodes)
5024 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5025 ** fixes in type translation and and type inference (thanks to
5027 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5028 ** various fixes in the new ports (thanks to Dan Barlow)
5029 * several changes related to debugging:
5030 ** suppression of tail recursion, as noted above
5031 ** stack overflow detection, as noted above
5032 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5033 is now the default. (For some time encapsulation has been more
5034 reliable than the breakpoint-based :ENCAPSULATE NIL
5035 implementation, at least on X86 systems; and I just noticed that
5036 encapsulation also seems closer to the spirit of the ANSI
5039 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5041 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5042 up properly again. (There was a packaging bug in 0.7.0 which
5043 left their definitions in SB-SYS::LOAD-FOREIGN and
5044 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5045 vital for most things which interface to C-level interfaces,
5046 like extensions working with sockets or databases or
5047 Perl-compatible regexes or whatever, and the need to fix
5048 this bug is the main reason that 0.7.1 was released so
5050 ** DEFGENERIC is now choosier about the methods it redefines, so that
5051 reLOADing a previously-LOADed file containing DEFGENERICs does
5052 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5053 cycle now works as it should. (thanks to Alexey Dejneka)
5054 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5055 fixed by Christophe Rhodes. (He actually submitted this patch
5056 months ago, and I delayed until after 0.7.0.)
5057 ** Bug 111 (internal compiler confusion about runtime checks on
5058 FUNCTION types) was fixed by Alexey Dejneka.
5059 * Some internal cleanups (getting rid of variables which aren't
5060 needed now that the byte interpreter is gone) caused the fasl
5061 file format number to change again.
5063 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5064 * major incompatible change: The default fasl file extension, i.e. the
5065 default extension for files produced by COMPILE-FILE, has changed
5066 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5068 ** There are many changes in the implementation of the compiler.
5069 SBCL is now essentially a compiler-only implementation of ANSI
5070 Common Lisp. EVAL still "interprets" a few special cases, but
5071 almost all the interesting cases are handled by creating
5072 a LAMBDA expression, calling COMPILE on it, then calling
5073 FUNCALL on the result.
5074 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5075 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5076 Since the code is newer, there might still be some new bugs
5077 (though not as many as before Martin Atzmueller's fixes:-). But
5078 the new code is substantially simpler and clearer, and hopefully
5079 any remaining bugs will be simpler, less fundamental, and more
5080 fixable then the bugs in the old code.
5081 ** The revised compiler is still a little unsteady on its feet.
5083 *** The debugging information it produces (particularly the names
5084 of FUNCTION objects) is sometimes much less useful than what
5085 the old compiler produced.
5086 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5087 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5088 within a MACROLET) has been temporarily weakened.
5089 ** There are new compiler optimizations for various functions:
5090 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5091 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5092 *** the math functions TRUNCATE, FLOOR, and CEILING
5093 *** the function-of-all-trades COERCE
5094 Mostly these should be transparent, but there's one
5095 potentially-annoying problem (bug 117): when the compiler
5096 inline-expands a function and does type analysis on the result,
5097 it can create control paths which have type mismatches, and
5098 when it can't prove that those control paths aren't taken,
5099 it will issue WARNINGs about the type mismatches. This is
5100 a particular problem in practice for the new sequence functions.
5101 It's not clear how this should be fixed, and for now, a
5102 workaround is given in the entry for 117 in the BUGS file.
5103 ** (Because of the interaction between the two previous items --
5104 occasional inlining problems and new inline expansions -- some
5105 of the new sequence function optimizations won't really kick in
5106 completely until debugging information, and then inlining, are
5107 straightened out in some future version.)
5108 * minor incompatible changes:
5109 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5110 DIRECTORY no longer implicitly promotes NIL slots of its
5111 pathname argument to :WILD. In particular, when you ask for the
5112 contents of a directory (which you used to be able to do without
5113 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5114 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5115 ** changes in behavior that ANSI explicitly defines to be
5116 implementation dependent:
5117 *** The new compiler-only implementation still conforms with ANSI,
5118 but acts a little different than before. Besides the obvious
5119 changes in performance tradeoffs (that the cost per form passed
5120 to EVAL has gone up, and the cost per form executed by EVAL
5121 has gone down), the behavior of the system changes a little
5122 because there are no longer any interpreted function objects.
5123 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5124 e.g. doing COMPILE on the output of interactive DEFUN is
5126 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5128 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5129 has changed from (:CL) to NIL.
5130 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5131 e.g. #\Newline and #\Tab, don't have names specified in the
5132 ANSI Common Lisp standard, is now based on their ASCII symbolic
5133 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5134 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5135 are no longer used for output.
5136 ** changes in internal implementation constants:
5137 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5138 4 million. (If your application spends a lot of time GCing and
5139 you have a lot of RAM, you might want to experiment with
5140 increasing it even more.)
5141 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5142 However, almost all old code should still continue to work without
5143 immediate update, as SB-C-CALL is now a (deprecated) nickname
5145 ** Old operator names in the style DEF-FOO are now deprecated in
5146 favor of new corresponding names DEFINE-FOO, for consistency with
5147 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5148 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5149 internal symbols, but a few supported extensions like
5150 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5151 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5152 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5153 etc. as you get deeper into recursive calls to the debugger
5154 command loop, instead of the old "5]", "5]]", "5]]]"
5155 sequence. (I was motivated to do this when squabbles between
5156 ILISP and SBCL left me very deeply nested in the debugger. In the
5157 short term, this change will probably provoke more ILISP/SBCL
5158 squabbles, but hopefully it will be an improvement in the long run.)
5159 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5160 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5161 function, since declaiming return types involving aliens is
5162 (1) annoyingly messy to do by hand and (2) vital to efficient
5163 compilation of code which calls such functions.
5164 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5165 longer reexported by the SB-EXT package. They're solely useful
5166 for alien code, so it seems more logical that you should get
5167 them from the SB-ALIEN package, not in SB-EXT.
5168 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5169 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5170 features. Instead, the code that they used to control is always
5171 built into the system.
5172 * many other bug fixes
5173 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5174 advantage of the new EVAL-WHEN stuff and to clean them up in
5175 general, and they are now more ANSI-compliant in a number of
5176 ways. Martin Atzmueller is responsible for a lot of this.
5177 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5179 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5180 *** correct ERROR type for various file operations
5181 *** some fixes for Lisp streams
5182 *** DEFMETHOD syntax checking
5183 *** changing old weird representation of debug information as
5184 strings (which, among their other deficiencies, don't transform
5185 correctly when you rename packages, and don't change their
5186 print representation when you change things like *PACKAGE*
5187 and *PRINT-LENGTH*) to symbols and lists of symbols
5188 He also made several improvements and fixed several bugs in DESCRIBE.
5189 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5191 *** misbehavior of WRITE-STRING/WRITE-LINE
5192 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5193 and several other LOOP problems as well
5194 *** DIRECTORY when similar filenames are present
5195 *** DEFGENERIC with :METHOD options
5196 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5197 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5198 *** argument ordering in FIND with :TEST option
5199 *** mishandled package designator argument in APROPOS-LIST
5200 *** various problems in the backquote readmacro
5201 *** a bug in APROPOS
5202 *** probably some others that I'm not describing very well here,
5203 since the CVS log documents them by reference to sbcl-devel
5204 messages, and the SourceForge archives aren't working well.:-(
5205 ** Dan Barlow improved the Alpha port (and is making progress on the
5206 PPC port, for those of you who think different).
5207 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5208 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5209 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5210 continues to work on the SPARC port (for those of you in a position
5211 to look down upon our little PC-compatible boxes from a great height).
5212 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5213 and uses that copy, rather than the current dynamic value, when
5214 it's trying to decide whether to truncate output. Thus e.g.
5215 (let ((*print-lines* 50))
5216 (pprint-logical-block (stream nil)
5218 (let ((*print-lines* 8))
5219 (print (aref possiblybigthings i) stream)))))
5220 should now truncate the logical block only at 50 lines, instead of
5221 often truncating it at 8 lines, as it did before.
5222 * The doc/cmucl/ directory, containing old CMU CL documentation
5223 from the time of the fork, is no longer part of the base system.
5224 SourceForge has shut down its anonymous FTP service, and with it
5225 my original plan for distributing the old CMU CL documentation
5226 there. For now, if you need these files you can download an old
5227 SBCL source release and extract them from it.
5228 * The fasl file version number changed again, for dozens of reasons,
5229 some of which are apparent above.
5231 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5232 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5233 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5234 patch, so that DISASSEMBLE output is much nicer.
5235 * The code in the SB-PROFILE package now seems reasonably stable.
5236 I still haven't decided what the final interface should look like
5237 (I'd like PROFILE to interact cleanly with TRACE, since both
5238 facilities use function encapsulation) but if you have a need
5239 for profiling now, you can probably use it successfully with
5240 the current CMU-CL-style interface.
5241 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5242 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5243 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5244 link now returns the dangling link itself, and for similar
5245 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5246 link itself. (In these cases the old code signalled an error and
5247 looped endlessly, respectively.) Thus, DIRECTORY now works even
5248 in the presence of dangling and cyclic symbolic links.
5249 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5250 is now a supported extension again, since the consensus on
5251 sbcl-devel was that it can be useful for ordinary development
5252 work, not just for debugging SBCL itself.
5253 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5254 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5255 that currently-defined functions might be redefined later with
5256 different return types.
5257 * Hash tables can be printed readably, as inspired by CMU CL code
5258 of Eric Marsden and SBCL code of Martin Atzmueller.
5259 * better error handling in CLOS method combination, thanks to
5260 Martin Atzmueller porting Pierre Mai's CMU CL patches
5261 * more overflow fixes for >16Mbyte I/O buffers
5262 * A bug in READ has been fixed, so that now a single Ctrl-D
5263 character suffices to cause end-of-file on character streams.
5264 In particular, now you only need one Ctrl-D at the command
5265 line (not two) to exit SBCL.
5266 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5268 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5269 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5270 does the right thing.
5271 * The implementation of some type tests, especially for CONDITION
5272 types, is now tidier and maybe faster, due to CMU CL code
5273 originally by Douglas Crosher, ported by Martin Atzmueller.
5274 * Some math functions have been fixed, and there are new
5275 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5276 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5277 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5278 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5279 likely to be built into sbcl-0.7.0.)
5280 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5281 CL, ported to SBCL by Martin Atzmueller)
5282 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5283 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5284 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5285 * There's a new slam.sh hack to shorten the edit/compile/debug
5286 cycle for low-level changes to SBCL itself, and a new
5287 :SB-AFTER-XC-CORE target feature to control the generation of
5288 the after-xc.core file needed by slam.sh.
5289 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5290 COMPILE-FILE is no longer supported, so that now every function
5291 gets an entry point, so that block compilation looks a little
5292 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5293 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5294 returns the number of bytes consed since the system started,
5295 rather than the number consed since the first time the function
5296 was called. (The new definition parallels ANSI functions like
5297 CL:GET-INTERNAL-RUN-TIME.)
5298 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5299 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5300 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5301 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5302 * Fasl file version numbers are now independent of the target CPU,
5303 since historically most system changes which required version
5304 number changes have affected all CPUs equally. Similarly,
5305 the byte fasl file version is now equal to the ordinary
5308 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5309 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5310 is no longer recognized. I apologize for this, because it was
5311 listed in SB-EXT as a supported extension, but I found that
5312 its existing behavior was poorly specified, as well as incorrectly
5313 specified, and it looked like too much of a mess to straighten it
5314 out. I have enough on my hands trying to get ANSI stuff to work..
5315 * many patches ported from CMU CL by Martin Atzmueller, with
5316 half a dozen bug fixes in pretty-printing and the debugger, and
5317 half a dozen others elsewhere
5318 * fixed bug 13: Floating point infinities are now supported again.
5319 They might still be a little bit flaky, but thanks to bug reports
5320 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5321 as flaky as they were.
5322 * The --noprogrammer command line option is now supported. (Its
5323 behavior is slightly different in detail from what the old man
5324 page claimed it would do, but it's still appropriate under the
5325 same circumstances that the man page talks about.)
5326 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5327 are now supported, and enabled by default. Thus, the compiler can
5328 handle many floating point and complex operations much less
5329 inefficiently. (Thus e.g. you can implement a complex FFT
5331 * The compiler now detects type mismatches between DECLAIM FTYPE
5332 and DEFUN better, and implements CHECK-TYPE more correctly, and
5333 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5334 thanks to patches from Martin Atzmueller.
5335 * various fixes to make the cross-compiler more portable to
5336 ANSI-conforming-but-different cross-compilation hosts (notably
5337 Lispworks for Windows, following bug reports from Arthur Lemmens)
5338 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5339 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5340 fixed thanks to Pierre Mai's CMU CL patches.
5341 * fixes to keep the system from overflowing internal counters when
5342 it tries to use i/o buffers larger than 16M bytes
5343 * fixed bug 45a: Various internal functions required to support
5344 complex special functions have been merged from CMU CL sources.
5345 (When I was first setting up SBCL, I misunderstood a compile-time
5346 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5347 * improved support for type intersection and union, fixing bug 12
5348 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5349 more obscure bugs as well
5350 * some steps toward byte-compiling non-performance-critical
5351 parts of the system, courtesy of patches from Martin Atzmueller
5352 * Christophe Rhodes has made some debian packages of sbcl at
5353 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5354 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5355 stable, but are nonetheless usable. When he's ready, I'd be happy
5356 to add them to the SourceForge "File Releases" section. (And if
5357 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5358 * new fasl file format version number (because of changes in
5359 internal representation of (OR ..) types to accommodate the new
5360 support for (AND ..) types, among other things)
5362 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5363 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5365 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5367 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5368 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5369 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5370 * DESCRIBE now works on structure objects again.
5371 * Most function call argument type mismatches are now handled as
5372 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5373 know whether the function will be redefined before the call is
5374 executed. (The compiler could flag local calls with full WARNINGs,
5375 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5376 it doesn't keep track of enough information to know whether calls
5377 are local in this sense.)
5378 * Compiler output is now more verbose, with messages truncated
5379 later than before. (There should be some supported way for users
5380 to override the default verbosity, but I haven't decided how to
5381 provide it yet, so this behavior is still controlled by the internal
5382 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5383 src/compiler/ir1util.lisp.)
5384 * Fasl file format version numbers have increased again, because
5385 support for the Gray streams extension changes the layout of the
5386 system's STREAM objects.
5387 * The Gray subclassable streams extension now works, thanks to a
5388 patch from Martin Atzmueller.
5389 * The full LOAD-FOREIGN extension (not just the primitive
5390 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5391 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5392 but like most other programs, it defaults to copying the Unix
5393 environment from the original process instead of starting the
5394 new process in an empty environment.
5395 * Extensions which manipulate the Unix environment now support
5396 an :ENVIRONMENT keyword option which doesn't smash case or
5397 do other bad things. The CMU-CL-style :ENV option is retained
5398 for porting convenience.
5399 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5400 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5402 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5404 * A patch from Martin Atzmueller seems to have solved the SIGINT
5405 problem, and as far as we know, signal-handling now works cleanly.
5406 (If you find any new bugs, please report them!)
5407 * The system no longer defaults Lisp source file names to types
5408 ".l", ".cl", or ".lsp", but only to ".lisp".
5409 * The compiler no longer uses special default file extensions for
5410 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5411 seems to expect a single default extension for all compiled code,
5412 and there's no compelling reason to try to stretch the standard
5413 to allow two different extensions.) Instead, byte-compiled files
5414 default to the same extension as native-compiled files.
5415 * Fasl file format version numbers have increased again, because
5416 a rearrangement of internal implementation packages made some
5417 dumped symbols in old fasl files unreadable in new cores.
5418 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5419 many fewer weird special cases.
5420 * Bug #17 (differing COMPILE-FILE behavior between logical and
5421 physical pathnames) has been fixed, and some related misbehavior too,
5422 thanks to a patch from Martin Atzmueller.
5423 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5424 by Tim Moore, ported to SBCL by Martin Atzmueller.
5425 * Martin Atzmueller fixed several filesystem-related problems,
5426 including bug #36, in part by porting CMU CL patches, which were
5427 written in part by Paul Werkowski.
5428 * More compiler warnings in src/runtime/ are gone, thanks to
5429 more patches from Martin Atzmueller.
5430 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5433 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5435 * DESCRIBE now works on CONDITION objects.
5436 * The debugger now handles errors which arise when trying to print
5437 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5439 * The build system now uses an additional file, customize-target-features.lisp,
5440 to allow local modifications to the target *FEATURES* list. (The point of
5441 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5442 debugging features enabled, without having to worry about propagating it
5443 into everyone's system when I do a "cvs update".) When no
5444 customize-target-features.lisp file exists, the target *FEATURES* list
5445 should be constructed the same way as before.
5446 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5447 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5448 warn about behavior which is undefined under the ANSI spec. Note: This
5449 is specified by ANSI, but it's not very popular with programmers.
5450 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5451 macro in the SBCL sources for an example of a workaround which you
5452 might use to make portable ANSI-standard code which does what you want.
5453 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5454 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5455 when it's used as a non-toplevel form. (This is required in order
5456 to implement the DEFCONSTANT-EQX macro.)
5457 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5458 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5459 funny things, due to bugs in the implementation of EVAL-WHEN
5460 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5461 non-toplevel DEFCONSTANTs are uncommon.)
5462 * The core file version number and fasl file version number have been
5463 incremented, because the old noncompliant DEFCONSTANT behavior involved
5464 calling functions which no longer exist, and because I also took the
5465 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5466 * fixed bug 1 (error handling before read-eval-print loop starts), and
5467 redid debugger restarts and related debugger commands somewhat while
5469 ** The QUIT debugger command is gone, since it did something
5470 rather different than the SB-EXT:QUIT command, and since it never
5471 worked properly outside the main toplevel read/eval/print loop.
5472 Invoking the new TOPLEVEL restart provides the same functionality.
5473 ** The GO debugger command is also gone, since you can just invoke
5474 the CONTINUE restart directly instead.
5475 ** The TOP debugger command is also gone, since it's redundant with the
5476 FRAME 0 command, and since it interfered with abbreviations for the
5478 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5480 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5481 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5482 some porting work by Martin Atzmueller)
5483 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5484 with a boatload of patches which he ported to SBCL. Now that those
5486 ** The system tries to make sure that its low-priority messages
5487 are prefixed by semicolons, to help people who like to use
5488 syntax highlighting in their ILISP buffer. (This patch
5489 was originally due to Raymond Toy.)
5490 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5491 patches originally written by Raymond Toy.
5492 ** The compiler understands coercion between single-value and
5493 multiple-VALUES type expressions better, getting rid of some very
5494 weird behavior, thanks to patches originally by Robert MacLachlan
5495 and Douglas Crosher.
5496 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5497 lambda lists, thanks to a patch originally by Pierre Mai.
5498 ** The system no longer bogusly warns about "abbreviated type
5500 ** The compiler gets less confused by inlining and RETURN-FROM,
5501 thanks to some patches originally by Tim Moore.
5502 ** The system no longer hangs when dumping circular lists to fasl
5503 files, thanks to a patch originally from Douglas Crosher.
5504 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5505 undefined function error.
5506 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5507 in structure slot initforms) for now, documented workaround instead:-|
5508 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5509 * fixed bug 5: added stubs for various Gray stream functions called
5510 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5511 installed, at least appropriate type errors are generated
5512 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5513 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5514 consistently in DEFMETHOD forms.
5515 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5516 it doesn't seem to affect SBCL after all
5517 * The C runtime system now builds with better optimization and many
5518 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5520 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5522 * The system is now under CVS at SourceForge (instead of the
5523 CVS repository on my home machine).
5524 * The new signal handling code has been tweaked to treat register
5525 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5526 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5527 downstream, e.g. in debug-int.lisp, has implicit dependencies
5528 on the unsignedness of integer representation of machine words,
5529 and that caused the system to bomb out with infinite regress
5530 when trying to recover from type errors involving signed values,
5531 e.g. (BUTLAST '(1 2 3) -1).)
5532 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5533 (This was one of the bugs Peter Van Eynde reported back in July.)
5534 * The system now uses code inspired by Colin Walters' O(N)
5535 implementation of MAP (from the cmucl-imp@cons.org mailing
5536 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5537 inline the MAP operation, and there is more than one
5538 sequence argument to the MAP call (so that it can't just
5539 do ETYPECASE once and for all based on the type of the
5540 single sequence argument). (The old non-inline implementation
5541 of the general M-argument sequence-of-length-N case required
5542 O(M*N*N) time when any of the sequence arguments were LISTs.)
5543 * The QUIT :UNIX-CODE keyword argument has been renamed to
5544 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5545 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5547 * Raymond Wiker's patches to port dynamic loading from Linux to
5548 FreeBSD have been added.
5549 * The BUGS file is now more nearly up to date, thanks in large part
5550 to Martin Atzmueller's review of it.
5551 * The debugger now flushes standard output streams before it begins
5552 its output ("debugger invoked" and so forth).
5553 * The core version number and fasl file version number have both
5554 been incremented, because of incompatible changes in the layout
5556 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5557 used to not be called for a saved Lisp image.)
5558 * Martin Atzmueller's version of a patch to fix a compiler crash,
5559 as posted on sbcl-devel 13 September 2000, has been installed.
5560 * Instead of installing Martin Atzmueller's patch for the
5561 compiler transform for SUBSEQ, I deleted the compiler transform,
5562 and transforms for some similar consing operations.
5563 * A bug in signal handling which kept TRACE from working on OpenBSD
5565 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5566 away by constant folding
5567 * The system now defines its address space constants in one place
5568 (in the Lisp sources), and propagates them automatically elsewhere
5569 (through GENESIS and the sbcl.h file). Therefore, patching the
5570 address map is less unnecessarily tedious and error-prone. The
5571 Lisp names of address space constants have also been systematized.
5572 * CVS tags like dollar-Header-dollar have been removed from
5573 the sources, because they have never saved me trouble and
5574 they've been source of trouble working with patches and other
5575 diff-related operations.
5576 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5577 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5579 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5581 * The system has been ported to OpenBSD.
5582 * The system now compiles with a simple "sh make.sh" on the systems
5583 that it's supported on. I.e., now you no longer need to tweak
5584 text in the target-features.lisp-expr and symlinks in src/runtime/
5585 by hand, the make.sh takes care of it for you.
5586 * The system is no longer so grossly inefficient when compiling code
5587 involving vectors implemented as general (not simple) vectors (VECTOR T),
5588 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5589 which dares to use the various sequence functions on non-simple
5590 vectors, takes less of a performance hit.
5591 * There is now a primitive type predicate VECTOR-T-P
5592 to test for the (VECTOR T) type, so that e.g.
5593 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5594 can now be compiled with some semblance of efficiency. (The old code
5595 turned the type declaration into a full call to %TYPEP at runtime!)
5596 * AREF on (VECTOR T) is still not fast, since it's still compiled
5597 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5598 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5599 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5600 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5601 without making full calls to SUBTYPEP at runtime.
5602 (Some analogous efficiency issues for non-simple vectors specialized to
5603 element types other than T, or for non-simple multidimensional arrays,
5604 have not been addressed. They could almost certainly be handled the
5605 same way if anyone is motivated to do so.)
5606 * The changes in array handling break binary compatibility, so
5607 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5608 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5609 instead of (VALUES T T).
5610 * By following the instructions that Dan Barlow posted to sbcl-devel
5611 on 2 July 2000, I was able to enable primitive dynamic object
5612 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5613 functionality is not implemented (since it calls ld to resolve
5614 library references automatically, requiring RUN-PROGRAM for its
5615 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5616 try to resolve library references) is now supported.
5617 * The system now flushes the standard output streams when it terminates,
5618 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5619 them at several other probably-convenient times, e.g. in each pass of
5620 the toplevel read-eval-print loop, and after evaluating a form given
5621 as an "--eval" command-line option. (These changes were motivated by a
5622 discussion of stream flushing issues on cmucl-imp in August 2000.)
5623 * The source transform for TYPEP of array types no longer assumes
5624 that an array whose element type is a not-yet-defined type
5625 is implemented as an array of T, but instead punts, so that the
5626 type will be interpreted at runtime.
5627 * There is now some support for cross-compiling in make.sh: each of
5628 the phases of make.sh has its own script. (This should be transparent
5629 to people doing ordinary, non-cross-compile builds.)
5630 * Since my laptop doesn't have hundreds of megabytes of memory like
5631 my desktop machine, I became more motivated to do some items on
5632 my to-do list in order to reduce the size of the system a little:
5633 ** Arrange for various needed-only-at-cold-init things to be
5634 uninterned after cold init. To support this, those things have
5635 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5636 symbols with such names are now uninterned after cold init).
5637 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5638 fasl files for cold load.
5639 ** Remove the old compiler structure pooling code (which used to
5640 be conditional on the target feature :SB-ALLOC) completely.
5641 ** Redo the representation of some data in cold init to be more compact.
5642 (I also looked into supporting byte compiled code at bootstrap time,
5643 which would probably reduce the size of the system a lot, but that
5644 looked too complicated, so I punted for now.)
5645 * The maximum signal nesting depth in the src/runtime/ support code has
5646 been reduced from 4096 to 256. (I don't know any reason for the very
5647 large old value. If the new smaller value turns out to break something,
5648 I'll probably just bump it back up.)
5649 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5651 * Many, many bugs reported by Peter Van Eynde have been added to
5652 the BUGS list; some have even been fixed.
5653 * While enabling dynamic object file loading, I tried to make the
5654 code easier to understand, renaming various functions and variables
5655 with less ambiguous names, and changing some function calling
5656 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5657 * While trying to figure out how to do the OpenBSD port, I tried to
5658 clean up some of the code in src/runtime/. In particular, I dropped
5659 support for non-POSIX signal handling, added various comments,
5660 tweaked the code to reduce the number of compilation warnings, and
5661 renamed some files to increase consistency.
5662 * To support the new automatic configuration functionality in make.sh,
5663 the source file target-features.lisp-expr has been replaced with the
5664 source file base-target-features.lisp-expr and the machine-generated
5665 file local-target-features.lisp-expr.
5666 * fixed a stupid quoting error in make.sh so that using CMU CL
5667 "lisp -batch" as cross-compilation host works again
5669 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5671 * DESCRIBE no longer tries to call itself recursively to describe
5672 bound/fbound values, so that it no longer fails on symbols which are
5673 bound to themselves (like keywords, T, and NIL).
5674 * DESCRIBE now works on generic functions.
5675 * The printer now prints less-screwed-up representations of closures
5676 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5677 * A private symbol is used instead of the :EMPTY keyword previously
5678 used to mark empty slots in hash tables. Thus
5679 (DEFVAR *HT* (MAKE-HASH-TABLE))
5680 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5681 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5682 now does what ANSI says that it should. (You can still get
5683 similar noncompliant behavior if bang on the hash table
5684 implementation with all the symbols you get back from
5685 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5686 This breaks binary compatibility, since tests for equality to
5687 :EMPTY are wired into things like the macroexpansion of
5688 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5690 * There's now a minimal placeholder implementation for CL:STEP,
5691 as required by ANSI.
5692 * An obscure bug in the interaction of the normal compiler, the byte
5693 compiler, inlining, and structure predicates has been patched
5694 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5695 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5697 * Missing ordinary arguments in a macro call are now detected even
5698 when the macro lambda list contains &KEY or &REST.
5699 * The debugger no longer complains about encountering the top of the
5700 stack when you type "FRAME 0" to explicitly instruct it to go to
5701 the top of the stack. And it now prints the frame you request even
5702 if it's the current frame (instead of saying "You are here.").
5703 * As specified by ANSI, the system now always prints keywords
5704 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5706 * The default initial SIZE of HASH-TABLEs is now smaller.
5707 * Type information from CLOS class dispatch is now propagated
5708 into DEFMETHOD bodies, so that e.g.
5709 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5711 is now basically equivalent to
5712 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5713 (DECLARE (TYPE SINGLE-FLOAT X))
5715 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5716 operation, without having to do run-time type dispatch.
5717 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5718 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5719 * Since I don't seem to be making big file reorganizations very often
5720 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5721 is overflowing my ability to conveniently back them up), I've finally
5722 checked the system into CVS. (The CVS repository is on my home system,
5723 not at SourceForge -- putting it on SourceForge might come later.)
5724 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5725 high-level GC-NOTIFY-FOO functions send their output. (There's
5726 still very little control of where low-level verbose GC functions
5727 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5728 less than it used to -- the GC-NOTIFY-FOO functions are now under
5729 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5730 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5731 in only one place in the source code, and propagates it automatically
5732 everywhere that it's needed. Thus e.g. when I bump the version from
5733 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5734 * The C source files now include boilerplate legalese and documentation
5735 at the head of each file (just as the Lisp source files already did).
5736 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5737 to his page will be replaced with a link to his new CLiki service.
5739 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5741 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5742 * The build process now looks for GNU make under the default name "gmake",
5743 instead of "make" as it used to. If GNU make is not available as "gmake"
5744 on your system, you can change this default behavior by setting the
5745 GNUMAKE environment variable.
5746 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5747 can build without error under CMU CL.
5749 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5751 * There is now a partial SBCL user manual (with some new text and some
5752 text cribbed from the CMU CL manual).
5753 * The beginnings of a profiler have been added (starting with the
5754 CMU CL profiler and simplifying and cleaning up). Eventually the
5755 main interface should be through the TRACE macro, but for now,
5756 it's still accessed through vaguely CMU-CL-style functions and macros
5757 exported from the package SB-PROFILE.
5758 * Some problems left over from porting CMU CL to the new
5759 cross-compilation bootstrap process have been cleaned up:
5760 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5761 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5762 part when getting rid of the compiler *BACKEND* stuff.)
5763 ** The value of *NULL-TYPE* was screwed up, because it was
5764 being initialized before the type system knew the final
5765 definition of the 'NULL type. This screwed up several key
5766 optimizations in the compiler, causing inefficiency in all sorts
5767 of places. (I found it because I wanted to understand why
5768 GET-INTERNAL-RUN-TIME was consing.)
5769 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5770 PROCLAIM FTYPE information. Unfortunately this broke binary
5771 compatibility again, since now the forms output by DEFGENERIC
5772 to refer to functions which didn't exist in 0.6.3.
5773 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5774 can use the new (as of 0.6.3) transform for SOME into MAP into
5776 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5777 values to (INTEGER 0 1000000), so that the time code will no longer
5778 occasionally get blown up by Linux returning 1000000 microseconds
5779 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5780 its output conform to the ANSI spec. (Alas, this makes its output
5781 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5782 * A full call to MAP NIL with a single sequence argument no longer conses.
5783 * fixes to problems pointed out by Martin Atzmueller:
5784 * The manual page no longer talks about multiprocessing as though
5785 it were currently supported.
5786 * The ILISP support patches have been removed from the distribution,
5787 because as of version 5.10.1, ILISP now supports SBCL without us
5788 having to maintain patches.
5789 * added a modified version of Raymond Toy's recent CMU CL patch for
5790 EQUALP comparison of HASH-TABLE
5792 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5794 * The system still can't cross-compile itself with
5795 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5796 entails), but at least it can compile more of itself that way
5797 than it used to be able to, and various buglets which were uncovered
5798 by trying to cross-compile itself that way have now been fixed.
5799 * This release breaks binary compatibility again. This time
5800 at least I've incremented the FASL file format version to 2, so that the
5801 problem can be detected reliably instead of just causing weird errors.
5802 * various new style warnings:
5803 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5804 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5805 ** using the lexical binding of a variable named in the *FOO* style
5806 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5807 as specified by ANSI.
5808 * *RANDOM-STATE* is no longer automatically initialized from
5809 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5810 default behavior of the system is to repeat its behavior every time
5811 it's run. If you'd like to change this behavior, you can always
5812 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5813 old convention there was no comparably easy way to get the system to
5814 repeat its behavior every time it was run.
5815 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5816 FTYPE declarations has been removed, in favor of their ANSI
5817 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5818 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5819 the types of their sequence arguments can be determined at compile time.
5820 This is done through a new open code expansion for MAP which eliminates
5821 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5822 argument types can be determined at compile time.
5823 * The optimizer now transforms COERCE into an identity operation when it
5824 can prove that the coerced object is already of the correct type. (This
5825 can be a win for machine generated code, including the output of other
5826 optimization transforms, such as the MAP transform above.)
5827 * Credit information has been moved from source file headers into CREDITS.
5828 * Source file headers have been made more standard.
5829 * The CASE macro now compiles without complaining even when it has
5832 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5834 * (Note that the way that the PCL macroexpansions were rewritten
5835 to accommodate the change in DEFGENERIC below breaks binary
5836 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5837 not run under sbcl-0.6.2. Once we get out of alpha releases,
5838 i.e. hit release 1.0.0, we'll probably try to maintain binary
5839 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5840 and sbcl-1.4.4. Until then, however, it might be fairly common
5841 for maintenance releases to break binary compatibility.)
5842 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5844 * The reporting of unhandled signals has been changed to print some
5845 explanatory text as well as the report form. (Previously only
5846 the report form was printed.)
5847 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5848 it defines, so that the compiler no longer issues undefined function
5849 warnings for compiled-but-not-yet-loaded generic functions.
5850 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5851 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5852 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5853 section of the ANSI spec are supported.
5854 * The "" nickname for the "KEYWORD" package has been removed.
5855 The reader still handles symbol tokens which begin with a package marker
5856 as keywords, but it doesn't expose its mechanism for doing so in the
5857 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5858 * The system now issues STYLE-WARNINGs for contradictory TYPE
5859 proclamations. (Warnings for contradictory FTYPE proclamations would
5860 be nice too, but those can't be done usefully unless the type system
5861 is made smarter about FUNCTION types.)
5862 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5863 systematized, so that "*target-*.lisp is supposed to exist only on the
5864 target and imply that there's a related file which exists on the
5865 host, and *host-*.lisp is supposed to exist only on the host and imply
5866 that there's a related file which exists on the target. This involves a
5867 lot of renaming. Hopefully the acute confusion caused by the renaming
5868 will be justified by the reduction in chronic confusion..
5869 ** runtime-type.lisp -> early-target-type.lisp
5870 ** target-type.lisp -> late-target-type.lisp
5871 ** early-host-format.lisp -> early-format.lisp
5872 ** late-host-format.lisp -> late-format.lisp
5873 ** host-error.lisp -> misc-error.lisp
5874 ** early-error.lisp -> early-target-error.lisp
5875 ** late-error.lisp -> late-target-error.lisp
5876 ** host-defboot.lisp -> early-defboot.lisp
5877 ** code/misc.lisp -> code/target-misc.lisp
5878 ** code/host-misc.lisp -> code/misc.lisp
5879 ** code/numbers.lisp -> code/target-numbers.lisp
5880 ** code/early-numbers.lisp -> numbers.lisp
5881 ** early-host-type.lisp -> early-type.lisp
5882 ** late-host-type.lisp -> late-type.lisp
5883 ** host-typep.lisp -> typep.lisp
5884 ** load.lisp -> target-load.lisp
5885 ** host-load.lisp -> load.lisp
5886 ** host-disassem.lisp -> disassem.lisp
5887 ** host-insts.lisp -> insts.lisp
5888 ** byte-comp.lisp -> target-byte-comp.lisp
5889 ** host-byte-comp.lisp -> byte-comp.lisp
5890 ** host-signal.lisp -> signal.lisp
5891 ** host-defstruct.lisp -> defstruct.lisp
5892 ** late-target-type.lisp -> deftypes-for-target.lisp
5893 Furthermore, several other previously target-only files foo.lisp (e.g.
5894 hash-table.lisp and random.lisp) have been split into a target-and-host
5895 foo.lisp file and a target-only target-foo.lisp file, with their key type
5896 definitions in the target-and-host part, so that the cross-compiler will
5897 know more about target types.
5898 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5899 gone away. In their place are various *BACKEND-FOO* variables
5900 corresponding to the slots of the old structure.
5901 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5902 into the target SBCL has been fixed.
5903 * The chill.lisp system for loading cold code into a running SBCL
5905 * Support for the CMU CL "scavenger hook" extension has been removed.
5906 (It was undocumented and unused in the CMU CL sources that SBCL was
5907 derived from, and stale in sbcl-0.6.1.)
5908 * Various errors in the cross-compiler type system were detected
5909 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5910 (enabling various consistency checks). Many of them were fixed,
5911 but some hard problems remain, so the compiler is back to
5912 running without *TYPE-SYSTEM-INITIALIZED* for now.
5913 * As part of the cross-compiler type system cleanup, I implemented
5914 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5915 * I have started adding UNCROSS calls throughout the type system
5916 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5917 on cross-compiler input files will be able to go away, and various
5919 * CONSTANTP now returns true for quoted forms (as explicitly required
5922 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5924 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5925 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5926 (MAKE-LIST -1). In the longer term, it ought to become true
5927 that declarations are assertions even at SAFETY 1. For now, it's not
5928 quite true even at SAFETY 3, but it's at least more nearly true..
5929 (Note that this change seems to increases the size of the system by
5930 O(5%) and to decrease the speed of the compiler by 20% or more.)
5931 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5932 for the problem of printing dozens of lines of distracting information
5933 about low-level system machinery as part of the top stack frame
5934 on entry to the debugger when an undefined function was called.
5935 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5936 is not reset to COMMON-LISP-USER.
5937 * Compilation of stuff related to dyncount.lisp has been made conditional
5938 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5939 smaller. The various dyncount-related symbols have been moved into
5940 a new "SB-DYNCOUNT" package.
5941 * tty-inspect.lisp has been renamed to inspect.lisp.
5942 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5943 feature has gone away. (When we eventually port to other flavors of
5944 libc and/or Unix, we'll try to make the differences between flavors
5945 invisible at the user level.)
5946 * Various other *FEATURES* tags, and/or their associated conditionals,
5947 have been removed if obsolescent, or given better documentation, or
5948 sometimes given more-mnemonic names.
5950 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5952 * tidied up "make.sh" script
5953 * tidied up system directory structure
5954 * better "clean.sh" behavior
5955 * added doc/FOR-CMUCL-DEVELOPERS
5956 * many many small tweaks to output format, e.g. removing possibly-confusing
5957 trailing #\. character in DESCRIBE-INSTANCE
5958 * (EQUALP #\A 'A) no longer signals an error.
5959 * new hashing code, including EQUALP hashing
5960 * tidied up Lisp initialization and toplevel
5961 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5962 * command line argument processing
5963 * added POSIX-GETENV function to deal with Unix-ish environment variables
5964 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5965 terminating SBCL on EOF
5966 * non-verbose GC by default
5967 * There is no more "sbcl" shell script; the sbcl file is now the C
5968 runtime executable (just like CMU CL).
5969 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5971 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5972 symbol and package information as Lisp native symbol and package objects
5973 instead of strings naming symbols and strings naming packages. This way,
5974 whenever packages are renamed (as in warm init), debug information is
5975 transformed along with everything else.
5976 * tweaked the optimization policy declarations which control the building
5977 of SBCL itself. Now, among other things, the system no longer saves
5978 source location debugging information. (This helps two problems at once
5979 by reducing SBCL size and by keeping SBCL from trying to look for its
5980 sources -- which may not exist -- when reporting errors.)
5981 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5982 debugging and testing purposes
5983 * cleaned up printing, making the printer call PRINT-OBJECT for
5984 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5985 methods, giving nearly-ANSI behavior
5986 * converted almost all special variables to use *FOO* naming convention
5987 * deleted PARSE-TIME functionality, since it can be done portably
5988 * moved some files out of cold init into warm init
5989 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5991 * regularized formatting of source files
5992 * added an install.sh script
5993 * fixed ridiculous memory usage of cross-compiler by making
5994 compiler/alloc.lisp not try to do pooling unless it can hook
5995 itself into the GC of the cross-compilation host. Now the system
5996 builds nicely on my old laptop.
5997 * added :SB-ALLOC in target-features.lisp-expr
5998 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5999 was not implemented)
6000 * re-did condition handling and note reporting in the compiler. Notes
6001 are no longer handled by signalling conditions. Style warnings
6002 and warnings are handled more correctly and reported in such a way
6003 that it's easy to find one or the other in your output (so that you
6004 can e.g. figure out which of many problems caused COMPILE-FILE to
6006 * changed the severity of several compiler warnings from full WARNING
6007 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6008 compiler note reporting so that it doesn't use the condition system
6009 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6010 COMPILE-FILE command)
6011 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6012 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6013 no longer supported, since their implementation was deeply intertwingled
6014 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6015 * removed bogus "support" for compiler macros named (SETF FOO), and
6016 removed the compiler macro for SETF INFO (but only after making a fool
6017 of myself on the cmucl-imp mailing list by posting a bogus patch for
6018 DEFINE-COMPILER-MACRO..)
6019 * Compiled files containing forms which have side effects on the Lisp
6020 reader (such as DEFPACKAGE forms) are now handled more correctly.
6021 (Compiler queuing of top level lambdas has been suppressed by setting
6022 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6023 * deleted various currently-unused source files, e.g. gengc.lisp. They
6024 may be added back at some point e.g. when porting to other architectures,
6025 but until they are it's distracting to distribute them and to try to
6027 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6028 there were so many of them they're just distractions, and UNCROSS is
6029 known to be able to handle the current sources
6030 * moved PROFILE functionality into TRACE, so that it will be clear
6031 how the wrapping and unwrapping of functions when you profile them
6032 interacts with the wrapping and unwrapping of functions when you
6033 trace them. (Actually, the functionality isn't there yet, but at least
6034 the interface specification is there. Hopefully, the functionality will
6035 arrive with some future maintenance release.)
6036 * removed host-oops.lisp
6037 * changed signature of QUIT function to allow UNIX-CODE argument
6038 * fixed READ-SEQUENCE bug
6039 * tweaked verbose GC output so that it looks more like the progress
6040 output that ANSI specifies for functions like LOAD
6041 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6042 * added <http://sbcl.sourceforge.com> to the banner information printed by