1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.51:
3 * enhancement: ASDF has been updated to version 2.017.
4 * enhancement: the --core command line option now accepts binaries with
6 * enhancement: when built with :sb-core-compression, core files (regular
7 or executable) can be compressed with zlib. Use the :COMPRESSION
8 argument to SAVE-LISP-AND-DIE to specify a compression level.
9 * enhancement: --[no-]merge-core-pages determines whether the runtime
10 hints the operating system that identical core pages between SBCL
11 processes should share the same physical memory. Default is to only
12 enable this for compressed cores.
13 * optimization: SLEEP no longer conses.
14 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
15 or bit-vectors when using the standard pretty-print dispatch table.
16 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
18 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
19 AREF, CHAR, etc. (lp#826971)
20 * bug fix: compiler-errors causes by integer arguments with composed of
21 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
22 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
23 expressions. (lp#770184)
24 * bug fix: complex single float literals are correctly aligned when used
25 as arguments of arithmetic operators.
26 * bug fix: on 32-bit platforms, rounding of double floats larger than a
27 fixnum is correct. (reported by Peter Keller)
28 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
29 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
32 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
33 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
34 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
35 MAKE-SOCKET-STREAM if using SERVE-EVENT.
36 * enhancement: added support for socket keepalive timeout intervals
37 and probe counts on Linux.
38 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
39 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
40 * enhancement: added new toplevel options --quit and --non-interactive
42 * enhancement: the Windows port of SBCL now builds and runs on Wine
43 (thanks to Anton Kovalenko).
44 * enhancement: more, and more correct, SSE instruction definitions on
45 x86-64 (thanks to Alexander Gavrilov).
46 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
47 to help the processor execute spin loops, when applicable. Currently
48 implemented for x86 and x86-64.
49 * optimization: unsigned integer divisions by a constant are implemented
50 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
51 * optimization: improved type-derivation for LOAD-TIME-VALUE.
52 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
53 instructions. (lp#814688)
54 * bug fix: COERCE to unfinalized extended sequence classes now works.
55 (reported by Jan Moringen; lp#815155)
56 * bug fix: a compiler error during typecheck generation, reported by Eric
58 * bug fix: obsolete instance protocol fires when shared slots are added
60 * bug fix: fixed-format floating point printing with scaling factors.
62 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
63 backtraces. (lp#818460)
64 * bug fix: better backtraces for interrupted syscall frames on x86.
66 * bug fix: SSE comparison instructions can be disassembled even when one
67 operand is in memory. (lp#814702)
68 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
69 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
70 type information associated with the VALUES form.
71 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
73 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
74 first write (lp#561642).
75 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
76 * bug fix: bound propagation involving conversion of large bignums to
77 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
79 * bug fix: &REST to &MORE conversion still works in unsafe call to known
80 functions; reported by Lutz Euler (lp#826459).
81 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
84 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
85 * enhancement: errors from FD handlers now provide a restart to remove
86 the offending handler.
87 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
89 * enhancement: location of user or system initialization file can now easily
90 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
91 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
92 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
93 the thunk, as a keyword argument, :arguments.
94 * enhancement: constraint propagation is simplified (and sped up) when
95 COMPILATION-SPEED > SPEED.
96 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
97 * enhancement: debugger understands &MORE arguments better.
98 * optimization: extracting bits of a single-float on x86-64 has been
99 optimized. (lp#555201)
100 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
101 when (> SPEED SPACE).
102 * optimization: local call trampolines (x86 and x86-64) are emitted
104 * optimization: implicit value cells for dynamic-extent closed-over bindings
105 on x86 and x86-64 can hold unboxed values as well.
106 * meta-optimization: improved compilation speed, especially for large
107 functions. (lp#792363 and lp#394206)
108 * bug fix: bound derivation for floating point operations is now more
109 careful about rounding possibly closing open bounds. (lp#793771)
110 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
111 backwards incompatible change in 1.0.48.27)
112 * bug fix: occasional debugger errors in when a type-error occured in a
113 function with dynamic-extent &rest list.
114 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
115 boa-construtors can be used to initialized structure slots.
116 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
117 (lp#795705, regression)
118 * bug fix: DIRECTORY works better on logical pathnames.
119 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
120 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
121 * bug fix: the compiler no longer constant-folds NaNs in
122 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
123 * bug fix: FORMAT now handles floating point rounding correct, eg.
124 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
126 * bug fix: style warning during lambda-list introspection of generic
127 functions with both optional and key argments.
128 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
130 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
133 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
134 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
135 interrupts for its body.
136 * enhancement: source locations are now available for files loaded as
137 source, compile-time-too evaluation, and initialization files.
138 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
139 virtual source-file information, eg. overriding input-file of COMPILE-FILE
140 when a temporary file is used for compilation.
141 * enhancement: ASDF has been updated to version 2.015.3.
142 * enhancement: backtraces involving frames from the default evaluator are
144 * enhancement: RUN-PROGRAM works with user-defined binary input and output
146 * enhancement: more informative compile-time warnings and runtime errors for
147 type-errors detected at compile-time.
148 * enhancement: deadlock detection for mutexes and spinlocks.
149 * enhancement: dynamic-extent for &rest lists stack allocate only their
150 spines, not their argumets. While portable code should not rely on this,
151 particularly in combination with inlining, it should make dynamic-extent
152 easier to use safely.
153 * enhancement: SB-POSIX improvements:
154 ** WNOHANG and WUNTRACED are exported.
155 ** SYSCALL-ERROR now also provides the name of the failing system call.
156 * enhancement: --script improvements:
157 ** errors on standard input, output, and error streams are handled and
158 cause scripts to exit silently, making them easier to use in shell
160 ** backtraces from scripts now go to standard error instead of the
161 terminal even if one is available.
162 ** --script can be an argument, causing the script to be loaded from
164 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
165 strings to foreign memory.
166 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
167 a file, making it easier to understand heap dynamics.
168 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
169 allows the compiler to automatically elide rest-list allocation so long as
170 the call sites are in functions that the compiler knows cannot escape.
172 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
173 especially in safe code when none of the required arguments have changed
175 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
176 uninterruptible, as well as blocking reads from socket streams created
177 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
178 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
179 from the to-char if the from-char is not a dispatch-macro character.
180 * bug fix: references to undefined variables in function calls that are
181 optimized away now signal a runtime error. (lp#722734)
182 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
183 types from a function defined in the same file. (regression from
185 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
187 * bug fix: spurious errors during QUIT when standard streams were closed.
189 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
190 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
191 years, is now no longer supported.
192 * enhancement: read() and write() have been added to SB-POSIX.
193 * enhancement: types of DEFSTRUCT constructors are proclaimed more
194 accurately, allowing better typechecking of call-sites.
195 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
196 are no longer caught. (reverted to pre 1.0.34 behaviour)
197 * optimization: slightly faster ISQRT. (lp#713343)
198 * bug fix: better support for Solaris /bin/sh in sh-based tests.
199 * bug fix: TRACE behaves better when attempting to trace undefined
200 functions. (lp#740717)
201 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
202 to (FUNCALL #'(LAMBDA ...) ...).
203 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
204 a compile-time error. (lp#720382)
205 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
207 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
208 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
209 optimization. (regression from 1.0.45.18/1.0.46.15)
210 * bug fix: package locks did not protects against compile-time side-effects
211 of DEFUN. (lp#675584)
212 * bug fix: --dynamic-space-size argument is validated more carefully.
214 * bug fix: memory fault from printing a malformed simple-condition.
216 * bug fix: redefining classes so that slot-definition classes change now
217 engages the obsolete instance protocol. (lp#766271)
218 * bug fix: constant improper lists could break source coverage recording.
220 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
223 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
224 * bug fix: fix mach port rights leaks in mach exception handling code on
225 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
227 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
228 * enhancement: redefinition warnings for macros from different files. (lp#434657)
229 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
230 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
231 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
232 processed using EVAL -- now the appropriate toplevel form is reported instead.
233 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
234 declarations. (lp#726331)
235 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
236 that NIL/NULL is excluded from the type.
237 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
239 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
241 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
242 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
243 stack-allocated values out of their dynamic-extent. (lp#310175)
244 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
245 x86-64 builds caused a type-error.
246 * bug fix: calling COMPILE with something else than a lambda-expression as the
247 second argument reports a more sensible error. (lp#718905)
248 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
249 are detected. (lp#520607)
250 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
252 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
253 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
254 methods. (regression from 1.0.45.18)
255 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
256 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
257 * bug fix: several foreign functions accepting string also accepted NIL and
258 consequently caused a memory fault at 0 now signal a type-error instead.
260 * bug fix: under rare circumstances, constraint propagation could rewrite a
261 variable reference to refer to a variable not in scope, causing an error
262 during physical environment analysis when attempting to close over the
263 variable. (lp#551227)
264 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
266 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
267 * enhancement: largefile support on Solaris.
268 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
269 arguments (lp#710017)
270 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
271 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
273 * optimization: ERROR and CERROR are approximately 5 times faster.
274 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
275 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
276 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
277 up instance creation in those cases.
278 * optimization: arithmetic operations with multiple constant arguments in now
279 have them reduced at compile-time. (lp#676414)
280 * optimization: determining current character position on string-streams for
281 pretty-printing was overly slow.
282 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
283 lifetime analysis to overwrite closed-over variables (lp#681092).
284 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
285 were not handled correctly (lp#713063).
286 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
288 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
289 mistake. (lp#667297).
290 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
291 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
292 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
293 unintern the wrong symbol with the same name. (lp#693796)
294 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
295 making it possible to restore the initial table if it has been messed up.
298 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
299 * enhancement: ~/ and ~user/ are treated specially in pathnames.
300 Refer to documentation for details.
301 * enhancement: ASDF has been updated to version 2.010.
302 * optimization: mutated closed-over variables that are only accessed by
303 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
304 declared to be DYNAMIC-EXTENT) are stored directly in their containing
305 stack frame, rather than allocating a VALUE-CELL (lp#586103).
306 * optimization: UNWIND-PROTECT cleanup functions are now declared
308 * bug fix: backtracing function with &REST arguments now shows the full
309 argument list. (lp#310173)
310 * bug fix: return types for functions with complex lambda-lists are now
311 derived properly (lp#384892)
312 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
313 long string arguments slowed the compiler down to a crawl.
314 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
315 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
316 in the DEFMETHOD body.
317 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
318 messages, being instead replaced with the corresponding function name.
319 * bug fix: don't derive overly complex unions of numeric types for arithmetic
320 operators. (lp#309448)
322 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
323 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
324 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
325 * enhancement: ALLOCATION-INFORMATION also provides the page the object
327 * enhancement: default dynamic-space size can be configured at build-time
328 without touching source, using the --dynamic-space-size argument to make.sh.
329 * enhancement: DESCRIBE recognizes symbols naming optimization policy
330 qualities, and mentions ALWAYS-BOUND declarations.
331 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
333 * enhancement: ASDF has been updated to 2.009.
334 * enhancement: the system detects known type-erros in calls better,
335 signalling a full warning about violated proclaimed FTYPEs and violations
336 of derived FTYPEs within the same file, including self-calls.
337 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
338 * optimization: constant-folding exploits numeric and character types, in
339 addition member types.
340 * optimization: numeric, character and member types that are inhabited by
341 exactly one value are tested with EQL.
342 * optimization: more conditional branches are eliminated during IR1.
343 Branches are simplified before performing if/if-conversion, and simple
344 equivalent branches (that only read the same constant or variable) are
346 * improvements to the Windows port:
347 ** change: canonical unparsing form for pathname namestrings now uses / as
348 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
349 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
350 on Windows. (thanks to Kalyanov Dmitry)
351 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
353 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
354 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
355 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
356 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
358 * bug fix: interrupts arriving during CL:OPEN caused an error.
359 * bug fix: overeager character buffering could cause input to block
360 spuriously when reading from a pipe (lp#643686)
361 * bug fix: more efficient timer expiry should avoid starvation on systems
362 where number of SIGALRMs per second is restricted. (lp#375515)
363 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
364 * bug fix: compile-times no longer scale linearly with the size of
365 quoted lists in source-code. (lp#654289)
366 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
367 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
368 so badly. (lp#654485)
369 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
370 an error for eg. STRUCTURE. (lp#458015)
371 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
372 (lp#613871, thanks to Roman Marynchak)
373 * bug fix: more reliable &REST list type derivation. (lp#655203)
374 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
375 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
376 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
377 also declared NOTINLINE. (lp#655581)
378 * bug fix: the compiler could attempt to emit constant left shifts of
379 greater value than n-word-bits. (lp#309063)
380 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
381 type information for the function being set. (lp#659220)
382 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
383 containing self-calls were recompiled with a new signature, and failed
384 to warn when a self-call using the old signature was left in. (lp#655126)
385 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
386 :DEFAULT when the default external had character size other than 8 bits.
388 * bug fix: derived types of functions in the same file were implicitly
389 trusted, leading to potential heap corruption when those function were
390 defined incompatibly. (lp#657499)
391 * bug fix: existing ASDF source registries are ignored when building
393 * bug fix: short-form DEFSETF checks that the second argument is a symbol
394 (lp#655824, thanks to Roman Marynchak)
395 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
396 package-lock violation was detected. (lp#660752)
397 * bug fix: the system can store different docstrings for a single function
398 under different names. (lp#661631, regression from 1.0.29.24)
399 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
400 properly. (lp#384801)
401 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
402 of specified length could confuse the type derivation in unsafe code.
404 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
405 fork with multiple Lisp threads running is made on every platform,
406 not just Darwin. (lp#451111)
407 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
408 around when core was saved, which could cause undefined behaviour when the
410 * bug fix: Allow UNTRACE of functions that are no longer defined
411 (lp#667657, thanks to Attila Lendvai)
412 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
413 compile-time warning (lp#664373, thanks to Stas Boukarev)
415 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
416 * incompatible change: FD-STREAMS no longer participate in the serve-event
417 event-loop by default. (lp#316072)
418 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
419 affects streams from CL:OPEN.
420 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
421 default, but this is liable to change: applications needing serve-event
422 for socket streams should explicitly request it using :SERVE-EVENTS T
424 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
426 * enhancement: CLOS effective method functions and defclass slot typechecking
427 function now have debug names for use in backtraces and profiles.
428 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
430 * enhancement: symbols are printed using fully qualified names in several
431 error and warning messages which are often associated with package
432 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
433 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
434 thanks to Andrew Golding)
435 * bug fix: reading /proc files on Linux works. (lp#425199)
436 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
438 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
439 breaking code that tried to write the value of a printer control variable.
440 (lp#581564, thanks to Stas Boukarev)
441 * bug fix: WRITE compiler macro did not handle output stream designators
442 correctly. (lp#598374, thanks to Stas Boukarev)
443 * bug fix: better availability of names of foreign functions in backtraces
444 on Linux. (lp#626962, thanks to Stas Boukarev)
445 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
446 lp#627581, thanks to Josh Elsasser and Jim Wise)
447 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
448 thanks to Josh Elsasser)
449 * bug fix: using aliases for builtin classes as defmethod specializers
450 without adding DEFTYPEs for them works. (lp#618387)
451 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
453 * bug fix: legally dynamic-extent lists and vectors used as
454 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
455 * bug fix: inline-expansion creating references to dead lambda-variables
456 (lp#454681, thanks to Alexey Dejneka)
457 * bug fix: better error message for bogus numerical arguments to RANDOM.
458 (lp#598986, thanks to Stas Boukarev)
459 * bug fix: the compiler occasionally inlined references from incompatible
460 environments occurs. (lp#308951)
461 * bug fix: the compiler threw an error when trying to compile a local
462 function (labels or flet) known to take a specialized complex argument.
463 (not in launchpad, reported by sykopomp in #lispgames)
464 * bug fix: package-locks failed to protect against compile-time effects of
465 DEFUN when the symbol previously had a macro definition. (lp#576637)
466 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
467 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
468 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
469 * bug fix: evaluation in debugger REPL works using the global context when
470 in frames that do not have sufficient debug information.
471 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
473 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
475 * bug fix: interrupt taking longer than the requested period caused SLEEP
476 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
478 changes in sbcl-1.0.42 relative to sbcl-1.0.41
480 ** Cross-compilation host is now specified to make.sh using
481 command-line argument --xc-host=<command> instead of a positional
482 argument. (thanks to Daniel Herring)
483 ** Install location can be specified to make.sh using command-line
484 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
485 * optimization: The default implementation of
486 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
487 * enhancement: Explicit memory barrier operations are now available for use
488 by multithreaded code. See documentation for details.
489 * enhancement: Experimental support for threading on Linux/PPC.
490 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
491 * bug fix: EXPT signals an error if first argument is a zero and second
492 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
493 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
494 (lp#576594, thanks to Roman Marynchak)
495 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
496 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
498 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
499 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
500 cached, leading to many fewer expensive calls to
501 COMPUTE-APPLICABLE-METHODS.
502 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
503 CLASS argument, search for and call an appropriate optimized ctor function
505 * bug fix: WRITE always returns the correct value.
507 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
508 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
509 * bug fix: Name conflicts between symbols passed as arguments to a single
510 call to IMPORT no longer add multiple symbols with the same name to the
511 package (detectable via DO-SYMBOLS).
512 * bug fix: support building without the dlshim on darwin x86 and x86-64
514 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
516 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
517 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
519 * bug fix: linkage-table entries on PPC now no longer overflow their
520 space allocation (potentially causing crashes if they are written out
522 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
523 platforms, preventing the GC from seeing stale pointers on the control
524 stack in subsequent GCs (which would, and does, break invariants).
525 * bug fix: 32-bit unicode external formats now work on big-endian systems.
526 * bug fix: Literal characters with code points greater than about 32767
527 now work on PPC UNICODE builds.
528 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
529 high order bits are explicitly cleared out. In some contrived situations,
530 this could lead to wrong results in mixed real/complex float arithmetic.
531 * bug fix: Fix function/macro redefinition warnings when building with
532 clisp. (lp#576787, thanks to Josh Elsasser)
533 * new platform: experimental support for ppc/openbsd (thanks to Josh
535 * bug fix: Floating-point traps now work on ppc/linux.
537 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
538 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
539 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
540 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
541 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
542 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
543 SB-THREAD:GRAB-MUTEX.
544 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
545 contain additional data structures and tools for concurrent programming;
546 at the moment it contains a lock-free queue, and a lock-free mailbox
548 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
549 GET-MUTEX but takes &key rather than &optional parameters. Also added
550 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
552 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
553 SB-THREAD:WAIT-ON-SEMAPHORE.
554 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
556 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
557 conditions to defer the deadline for forever.
558 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
560 * enhancement: errors from NO-APPLICABLE-METHOD and
561 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
562 generic function call.
563 * enhancement: SB-BSD-SOCKET improvements
564 ** sockets and socket streams now have a more informative printed
565 representation based on the corresponding SOCKET-NAME and
567 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
569 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
570 CL:CLOSE when appropriate, and no longer disassociates the stream
571 from the socket if close failed. (lp#543951)
572 * improvements to the instrumenting profiler
573 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
574 ** optimization: counters no longer use locks for the overflow mode.
575 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
576 incurred an off-by-one miscount.
577 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
578 * enhancement: improved DEFMETHOD pretty-printing.
579 * enhancement: perform range reduction when arguments are too large for
580 x87's transcendentals (instead of returning 0). (lp#327192)
581 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
582 some of CL-PPCRE's macros. (lp#570079)
583 * enhancement: our machine code is slightly less hostile to valgrind on
585 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
586 to Robert Swindells and Aleksej Saushev)
587 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
588 * bug fix: a rare case of startup-time page table corruption.
589 * bug fix: a semaphore with multiple waiters and some of them unwinding due
590 to timeouts could be left in an inconsistent state.
591 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
592 * bug fix: misoptimization of multiplication by one in
593 (SB-C::FLOAT-ACCURACY 0) policies.
594 * bug fix: miscounts in SB-PROFILE.
595 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
596 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
597 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
598 up itself" (March 2010) for further details.
599 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
600 against length of the list if the element is found before the specified
601 END is reached. (thanks to Alec Berryman, lp#554385)
602 * bug fix: errors signalled during package graph modification no longer
603 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
604 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
605 :SB-DOC feature. (lp#552564)
606 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
607 * bug fix: more robust runtime executable path detection. (lp#375549)
608 * bug fix: GCD always returns positive values. (lp#413680)
609 * bug fix: Converting division to multiplication by reciprocal handles
611 * bug fix: We were too eager in eliding range reduction tests on x87.
612 The maximal magnitude is 2^63, not 2^64.
613 * bug fix: Transforms for TRUNCATE don't die when the result is completely
615 * bug fix: Maybe restore buildability on Alpha.
616 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
618 * bug fix: RANDOM-STATE can be printed readably again.
619 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
620 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
621 types) could result in type mismatches during compilation.
623 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
624 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
625 stack frame thrown from.
626 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
627 compiler optimization qualities inside dynamic extent of its body.
628 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
629 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
631 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
632 constraint propgation, allowing better compilation eg. when used to
633 access structures with WITH-SLOTS. (lp#520366)
634 * optimization: the compiler is now more aware of the type of the underlying
635 storage vector for multidimensional simple arrays resulting in better code
636 for accessing such arrays.
637 * optimization: passing NIL as the environment argument to TYPEP no longer
638 inhibits optimizing it. (lp#309788)
639 * optimization: more efficient register usage when handling single-float
640 arguments on x86-64. (thanks to Lutz Euler)
641 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
642 pre-allocated temporary vectors. (lp#496249)
643 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
644 in :INITIAL-CONTENTS. (lp#523612)
645 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
646 functions. (lp#524707)
647 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
648 WITH-SLOTS usages during compilation.
649 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
650 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
651 all x86oid platforms with :UD2-BREAKPOINTS target feature.
652 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
653 instruction (tested on x86oid linux with ud2-breakpoints).
654 * bug fix: slam.sh now works on win32.
655 * bug fix: better differences of numeric types. (lp#309124)
656 * bug fix: arrays declared intersection and union types can have their
657 upgraded element type derived. (lp#316078)
658 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
659 threads started during profiling. (lp#472499)
660 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
662 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
663 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
664 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
665 values instead of signaling an error. (lp#309093)
666 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
668 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
669 declarations (lp#497321)
670 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
671 and failed to detect circular lists (lp#452008)
672 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
674 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
675 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
676 due to it, so that handlers can run.
677 * bug fix: reparsing undefined types if they have become defined since
679 * bug fix: missing &REST type in a proclamation for a function with both
680 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
681 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
682 expanded calls (lp#542174)
683 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
684 than just at toplevel form.
686 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
687 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
688 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
689 but work on type specifiers.
690 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
691 to name a type specifier.
692 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
693 specifier is valid where "valid" basically means "would be accepted as
694 second argument of TYPEP".
695 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
696 returns the function's declared, or derived FTYPE.
697 * new feature: SB-POSIX now supports accessing the d_ino member of
698 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
699 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
700 provide for seeding a RANDOM-STATE object with user-provided data or
701 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
702 attempt to initialize the returned state from the operating system's
703 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
704 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
705 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
706 * bug fix: Fix grammar and style issues for the docstrings of
707 printer-related variables and functions. (Thanks to mon_key; launchpad
709 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
711 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
712 in a row even though a handler defered the deadline long into the
714 * bug fix: A deadline handler was run without interrupts enabled for a
715 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
716 in infinitely spinning, non-killable threads.
717 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
718 before reaching the erring stack frame.
719 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
720 real power. (launchpad bug lp#525949)
721 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
722 GENCGC platforms. (launchpad bug lp#529014)
723 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
724 (launchpad bug lp#525916)
725 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
726 (Thanks to Robert Goldman)
728 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
729 * optimization: ROUND with a single single-float or double-float argument
730 is properly inlined when possible.
731 * optimization: Slightly better code is generated for integer<->float
732 conversions and for single-float<->double-float conversions on x86-64.
733 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
734 code for 32-bit and 64-bit rotations on x86-64.
735 * bug fix: The install script changes the ownership of directories as well
736 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
737 launchpad bug lp#508485)
738 * bug fix: TRUNCATE with a single single-float or double-float argument is
739 properly inlined when possible. (launchpad bug lp#489388)
740 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
741 no longer causes a compiler error on x86 and ppc.
742 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
743 always relative to *READTABLE* rather than the passed argument.
745 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
746 * minor incompatible change: threading support is now enabled by default
748 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
750 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
751 are now caught and reported just like errors during macroexpansion.
752 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
753 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
754 * enhancement: ASDF systems can now depends on SB-QUEUE.
755 * fixes and improvements related to Unicode and external formats:
756 ** bug fix: error handling and restart usage in the ucs-2 external format
758 ** there is now an implementation of the ucs-4 external format.
759 ** the utf-16 and utf-32 external formats are supported.
760 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
761 in the environment. setenv() and unsetenv() are also provided. (reported by
762 Fare Rideau; launchpad bug lp#460455)
763 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
764 loading. This ensures sensible errors for .FASL files from other
765 implementations on case-insensitive filesystems. (reported by Willem
766 Broekema; launchpad bug lp#489417)
767 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
768 Willem Broekema; launchpad bug lp#489698).
769 * bug fix: some minor code rearrangements to reenable warning-free building
770 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
771 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
773 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
776 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
777 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
778 * improvement: support O_LARGEFILE access to files larger than 2GB on
779 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
780 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
781 definitions for methods specializing on the passed class itself.
782 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
783 definitions for methods specializing on the passed class itself, or on
785 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
786 about itself during the build (e.g. for M-? in Slime), if this flag is
787 enabled in customize-target-features.lisp. This will increase the core
788 size by about 5-6mb, though, so it's mostly interesting to SBCL
790 * new feature: various GENCGC tuning parameters have been experimentally
791 documented and exported from SB-EXT. See documentation for details.
792 * fixes and improvements related to Unicode and external formats:
793 ** the Unicode character database has been upgraded to the
794 Unicode 5.2 standard, giving names and properties to a number of new
795 characters, and providing a few extra characters with case
797 ** improvement: restarts for providing replacement input/output on coding
798 errors for fd-stream external formats.
799 ** improvement: where :<encoding> is a keyword corresponding to an
800 external format the system supports, it is now possible to specify
801 (:<encoding> :replacement <character>) as an external format which will
802 automatically substitute <character> on encoding or decoding errors for
803 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
805 ** improvement: the file streams underlying the standard streams (such as
806 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
807 which uses the replacement mechanism to handle encoding errors,
808 preventing various infinite error chains and unrecoverable I/O
810 ** minor incompatible change: the utf-8 external format now correctly
811 refuses to encode Lisp characters in the surrogate range (char-codes
812 between #xd800 and #xdfff).
813 ** fix a typo preventing conversion of strings into octet vectors
814 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
816 ** fix a bug in the octet multibyte handling of decoding errors and the
817 USE-VALUE restart. (launchpad bug lp#314939)
818 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
819 restart on fd-stream decoding errors.
820 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
821 error is near the end of file.
822 ** fix a double-error case in unibyte octet conversions, when the first
823 use of USE-VALUE is ignored.
824 ** fix bugs in handling of undefined code points in unibyte encodings.
825 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
826 streams after an UNREAD-CHAR.
827 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
828 object is allocated in a boxed region of dynamic space.
829 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
830 fork with multiple Lisp threads running is made, instead of going
831 ahead with unpredictable consequences. (reported by Leslie Polzer)
832 * bug fix: uses of slot accessors on specialized method parameters within
833 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
834 error while finalizing the class. This fix may cause classes with slot
835 accessors to be finalized later than previously. (reported by Lars Rune
836 Nøstdal; launchpad bug lp#473699)
837 * bug fix: restore buildability on the MIPS platform. (regression from
838 1.0.30.38, reported by Samium Gromoff)
839 * bug fix: inspecting closures is less likely to fail with a type error.
840 * bug fix: no timer starvation when setting the system clock back.
841 (launchpad bug lp#460283)
842 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
843 standard pprint dispatch table as specified by CLHS.
844 * bug fix: give CLISP a hint about a type declaration to enable it to build
845 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
847 * bug fix: correctly dump literal objects in defaulting forms of arglists.
848 (reported by Attila Lendvai; launchpad bug lp#310132)
849 * bug fix: distinguish in type specifiers between arrays that might be
850 complex and arrays that are definitely complex. (launchpad bug lp#309129)
851 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
852 type. (reported by Levente Mészáros; launchpad bug lp#485972)
853 * bug fix: setting the value of a symbol-macro within a method in the
854 presence of type declarations works properly again. (reported by Iban
855 Hatchondo; launchpad bug lp#485019)
857 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
858 * optimization: faster FIND and POSITION on strings of unknown element type
859 in high SPEED policies. (thanks to Karol Swietlicki)
860 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
862 * improvement: better error signalling for bogus parameter specializer names
863 in DEFMETHOD forms (reported by Pluijzer)
864 * bug fix: DELETE-FILE once again works on logical pathnames (regression
866 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
868 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
869 removes previous default initargs (reported by Lars Rune Nøstdal and
871 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
872 lambda-lists. (reported by Peter Seibel)
873 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
874 correctly when starting from an executable core without saved runtime
875 options (reported by Faré Rideau, thanks to Zach Beane)
876 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
877 an optimization note instead. (reported by Martin Cracauer)
878 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
879 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
880 new process group if it doesn't need to share stdin with the sbcl
881 process. (thanks to Leslie Polzer)
882 * bug fix: SATISFIES could be misoptimized to refer to a local function.
883 (reported by Stanislaw Halik)
885 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
886 * improvement: stack allocation is should now be possible in all nested
887 inlining cases: failure to stack allocate when equivalent code is manually
888 open coded is now considered a bug.
889 * improvements related to Unicode:
890 ** the Unicode character database has been upgraded to the
891 Unicode 5.1 standard, giving names and properties to a number of new
892 characters, and providing a few extra characters with case
894 ** the system now recognizes and produces names for Unicode Hangul
896 ** the EBCDIC-US external-format is now supported for octet operations
897 (as well as for stream operations).
898 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
899 be used to output toplevel compile-time effects into a separate .CFASL
901 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
902 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
904 * optimization: TRUNCATE on known single- and double-floats is upto 25%
906 * optimization: division of floating point numbers by constants uses
907 multiplication by reciprocal when an exact reciprocal exists.
908 * optimization: multiplication of single- and double-floats floats by
909 constant two has been optimized.
910 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
911 sufficient type information is available. (thanks to Leslie Polzer)
912 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
913 known structure objects are as efficient as defstruct generated accessors.
914 * optimization: unused vector creation can now be optimized away.
915 * improvement: ASDF systems can now depends on SB-INTROSPECT.
916 * improvement: a STYLE-WARNING is signalled when a generic function
917 clobbers an earlier FTYPE proclamation.
918 * improvement: the compiler is able to track the effective type of
919 generic function across method addition and removal even in the
920 absence of an explicit DEFGENERIC.
921 * improvement: DESCRIBE now reports on symbols naming undefined
922 but assumed or declared function as well.
923 * improvement: recompilation of systems using SB-GROVEL now works
924 (thanks to Leslie Polzer)
925 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
926 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
928 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
929 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
930 well as user defined declaration names.
931 ** VARIABLE-INFORMATION is now aware of alien variables.
932 * improvement: improved address space layout on OpenBSD (thanks to Josh
934 * improvement: pretty-printing of various Lisp forms has been improved
935 (thanks to Tobias Rittweiler)
936 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
937 unused were deleted in safe code. (reported by John Fremlin)
938 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
940 * bug fix: some out-of-line array predicates were missing (reported by
942 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
944 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
945 (thanks to Larry D'Anna)
946 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
947 as well. (reported by Josh Elsasser)
948 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
949 leading to possible attempts to delete the same file twice. See docstring
950 on DELETE-FILE for details. (reported by John Fremlin)
951 * bug fix: DELETE-FILE once again deletes the file named by the pathname
952 designator argument, rather than its truename. (reported by Luis
954 * bug fix: the low-level debugger had 32-bit assumptions and was missing
955 information about some array types. (thanks to Luis Oliveira)
956 * bug fix: moderately complex combinations of inline expansions could
957 be miscompiled if the result was declared to be dynamic extent.
958 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
959 form (+ <variable> <integer>) were miscompiled under certain
961 * bug fix: in some cases no compiler note about failure to stack allocate
962 was emitted, even if the objects were in fact heap allocated.
963 * bug fix: minor violation of "otherwise inaccessible" rule for stack
964 allocation could cause objects users might reasonably expect to
965 be heap allocated to be stack allocated.
966 * bug fix: DESCRIBE signalled an error for generic functions under
967 certain circumstances. (thanks to Leslie Polzer)
968 * bug fix: Fixed spelling of an error message.
970 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
971 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
972 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
973 of SB-THREAD:THREAD-ERROR-THREAD.
974 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
975 * new feature: docstrings for local and anonymous functions are no longer
976 discarded. (thanks to Leslie Polzer)
977 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
978 values in other threads.
979 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
980 about object allocation.
981 * optimization: division of a real float by a complex float is implemented
982 with a specialised code sequence.
983 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
984 keywords is an order of magnitude faster.
985 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
986 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
987 methods, and similarly for non-standard metaclass classes as long as there
988 are no methods additional on MAKE-INSTANCE.
989 * optimization: more efficient type-checks for FIXNUMs when the value
990 is known to be a signed word on x86 and x86-64.
991 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
992 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
994 * optimization: compiler is smarter about delegating argument type checks to
996 * optimization: several character functions are now compiled somewhat more
997 efficiently. (reported by Lynn Quam)
998 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
999 * improvement: less unsafe constant folding in floating point arithmetic,
1000 especially for mixed complex/real -float operations.
1001 * optimization: constant double and single floats are stored in native
1002 unboxed format on x86[-64].
1003 * optimization: smarter code for arithmetic operations with constant floats,
1004 complex floats, or integers on x86[-64].
1005 * optimization: smarter code for conjugate/multiplication of float complexes
1006 and abs/negate of floats on x86-64.
1007 * optimization: more efficient complex float and real float operations on
1009 * improvement: complex float division is slightly more stable.
1010 * improvement: DESCRIBE output has been reworked to be easier to read and
1011 contains more pertinent information.
1012 * improvement: failure to provide requested stack allocation compiler notes
1013 provided in all cases (requested stack allocation not happening without a
1014 note being issued is now considered a bug.)
1015 * bug fix: SB-POSIX exports the documented types and functions
1016 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1017 types. (reported by "abhi")
1018 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1019 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1020 (thanks to Paul Khuong)
1021 * bug fix: looping around HANDLER-CASE could silently consume stack space
1022 on each iteration. (reported by "foobar")
1023 * bug fix: better error signalling when calls to functions seeking elements
1024 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1025 (reported by Tobias Rittweiler)
1026 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1027 directory components now works as it used to. (various prolems reported by
1028 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1029 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1030 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1031 * bug fix: bogus undefined variable warnings from fopcompiled references to
1032 global variables. (thanks to Lars Rune Nøstdal)
1033 * bug fix: foreign function names should now appear in backtraces on
1034 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1035 * bug fix: SETF compiler macro documentation strings are not discarded
1037 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1038 (thanks to Alex Plotnick)
1039 * bug fix: SLEEP accepts large integer arguments, truncating them to
1040 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1041 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1042 * bug fix: compiler notes for expensive slot type checks could be emitted
1043 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1045 changes in sbcl-1.0.29 relative to 1.0.28:
1046 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1047 https://bugs.launchpad.net/sbcl
1048 Bugs can be reported directly there, or by sending email to
1049 sbcl-bugs@lists.sourceforge.net
1050 (no subscription required.)
1051 * minor incompatible change: under weak type checking policy integer
1052 types are weakened less aggressively.
1053 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1054 allowed to return, which causes SBCL to quit with exit status 0. Previously
1055 if the function returned with a small integer return value, that value
1056 was accidentally reused as the exit status.
1057 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1058 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1059 :HASH-FUNCTION argument. Refer to user manual for details.
1060 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1062 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1063 microseconds since the Unix epoch on all platforms.
1064 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1065 allows the compiler to safely elide boundedness checks for special
1067 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1068 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1069 efficiency measure for threaded platforms, but also valueable in
1071 * new feature: UNC pathnames are now understood by the system on Windows.
1072 * optimization: the compiler uses a specialized version of FILL when the
1073 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1075 * optimization: accesses to potentially non-simple arrays where element type
1076 is known are 50% faster.
1077 * optimization: compiler now generates faster array typechecking code.
1078 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1080 * optimization: multidimensional array accesses in the absence of type
1081 information regarding array rank are approximately 10% faster due to
1082 open coding of ARRAY-RANK.
1083 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1084 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1086 * optimization: result of call to VECTOR can now be stack allocated.
1087 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1088 as long as the resulting array is one-dimensional and has a known
1089 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1090 length of the list matches the known length of the vector does not
1091 allocate the list as an intermediate step. Ditto for VECTOR and simple
1093 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1094 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1095 known element type, and is known to be simple and one dimensional.
1096 * improvement: SBCL now emits a compiler note where stack allocation was
1097 requested but could not be provided (not in all cases, unfortunately)
1098 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1099 * improvement: pretty-printing loop has been implemented properly. (thanks
1100 to Tobias Rittweiler)
1101 * documentation: CLOS slot typechecing policy has been documented.
1102 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1103 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1104 pointer, leading to memory faults. (thanks to Bart Botta)
1105 * bug fix: better floating point exception handling on x86/OpenBSD.
1106 (thanks to Josh Elsasser)
1107 * bug fix: exit status from QUIT when called under --script was lost
1108 (reported by Hubert Kauker)
1109 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1110 same implementation of FILL to initialize the array, even if a more
1111 efficient one was available (reported by Stas Boukarev, thanks to
1113 * bug fix: potential miscompilation of array stack allocation on x86 and
1114 x86-64. (reported by Time Tossavainen)
1115 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1116 result in their subforms being treated as top level forms. (reported by
1118 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1119 than a machine register could leave garbage in the high bits of the
1120 result register (bug 316325).
1121 * bug fix: disable address space randomization Linux/x86-64 as well,
1122 not just x86-64. (reported by Ken Olum)
1123 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1124 generate incorrect code.
1125 * bug fix: #201; type inference for CONS and ARRAY types could derive
1126 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1127 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1128 could not be assigned to or bound with PROGV. (reported by Lorenz
1130 * bug fix: the value of CL:- in the inspector was the previous expression
1131 evaluated rather than the expression being evaluated.
1132 * bug fix: constants can no longer be locally declared special.
1133 * bug fix: signals delivered to threads started from foreign land (read:
1134 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1135 thread by blocking all signals and resignalling.
1136 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1137 from :INITFORM, if any.
1139 changes in sbcl-1.0.28 relative to 1.0.27:
1140 * a number of bugs in cross-compilation have been fixed, with the ultimate
1141 result that building under (at least) clisp should be much more reliable.
1142 * minor incompatible changes: echo-streams now propagate unread-char to the
1143 underlying input stream, and no longer permit unreading more than one
1145 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1146 frames, allowing for instance more reliable backtraces.
1147 * improvement: the debugger REPL can now reference lexical variables
1148 by name directly for code compiled with (DEBUG 3).
1149 * improvement: errors from malformed declarations now have better source
1150 paths associated with them. (thanks to Tobias Rittweiler)
1151 * optimization: faster local calls on x86/x86-64
1152 * bug fix: some error messages for out-of-bound array indexes confused the
1153 index and the bound. (thanks to Stas Boukarev)
1154 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1156 * bug fix: running regressions tests in shells without OSTYPE set now works.
1157 (reported by Harald Hanche-Olsen)
1158 * bug fix: more robust static space exhaustion signalling from
1159 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1160 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1161 docstring away instead of storing it under names such as (LAMBDA (X)).
1162 (reported by Leslie Polzer)
1163 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1164 (thanks to Ole Arndt for the patch)
1165 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1166 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1167 potentially-invalid effective methods in its cache.
1168 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1169 instances as well (thanks to Paul Khuong)
1170 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1171 SB-POSIX:WAITPID and their C equivalents.
1172 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1174 changes in sbcl-1.0.27 relative to 1.0.26:
1175 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1176 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1177 * improvement: the system either recovers from stack exhaustion or dies
1178 properly as opposed to leaving the user uncertain of whether the handler
1179 trampled on some random memory next to the stack or having to rely on
1180 --lose-on-corruption (which is still a good idea to use in production
1181 because stack exhaustion can happen in signal handlers which will likely
1183 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1184 1.0.25.37, reported by Harald Hanche-Olsen)
1185 * bug fix: work around signal delivery bug in darwin (regression from
1186 1.0.25.44, reported by Sidney Markowitz)
1187 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1189 changes in sbcl-1.0.26 relative to 1.0.25:
1190 * incompatible change: an interruption (be it a function passed to
1191 INTERRUPT-THREAD or a timer function) runs in an environment where
1192 interrupts can be enabled. The interruption can use
1193 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1194 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1195 potentially running out of stack. Keep in mind that in the absence
1196 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1197 acquiring a lock can enable interrupts.
1198 * incompatible change: GC-OFF and GC-ON are removed, as they were
1199 always unsafe. Use WITHOUT-GCING instead.
1200 * new feature: runtime option --disable-ldb
1201 * new feature: runtime option --lose-on-corruption to die at the
1202 slightest hint of possibly non-recoverable errors: running out of
1203 memory, stack, alien stack, binding stack, encountering a memory
1204 fault, etc. In the absence of --lose-on-corruption a warning is
1206 * enhancement: detect binding stack exhaustion
1207 * enhancement: detect alien stack exhaustion on x86/x86-64
1208 * improvement: generally more stable and reliable interrupt handling
1209 * improvement: there is a per thread interruption queue,
1210 interruptions are executed in order of arrival
1211 * improvement: a repeating timer reschedules itself when the it has
1212 finished, but expiration times are spaced equally. If an
1213 expiration time is in the past it will trigger after a short grace
1214 period that may give a chance to other things to run.
1215 * optimization: slightly faster gc on multithreaded builds
1216 * optimization: faster WITHOUT-GCING
1217 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1218 important locks so that the debugger/handler doesn't produce
1219 recursive errors or deadlock.
1220 * bug fix: real-time signals are not used anymore, so no more
1221 hanging when the system wide real-time signal queue gets full.
1222 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1224 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1225 * bug fix: fix random memory faults related to interrupts on alpha
1226 * bug fix: fix random memory faults related to interrupts on sparc
1227 * bug fix: fix deadlocks related to starting threads
1228 * bug fix: fix deadlines on locks on futex platforms
1229 * bug fix: restore errno in signal handlers
1230 * bug fix: fix deadlocks related to hash tables
1231 * bug fix: fix deadlocks in pcl
1233 changes in sbcl-1.0.25 relative to 1.0.24:
1234 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1235 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1236 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1237 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1238 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1239 better name and does not return values so stale on multiprocessor systems.
1240 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1242 * improvement: unithread builds keep track of MUTEX-VALUE.
1243 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1244 stream anymore making it thread safe to have a concurrent reader and
1245 a writer, for instance, in a pipe.
1246 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1247 arguments, making compiler-macros for SETF-functions able to inspect
1248 their constant arguments.
1249 * improvement: COMPILE-FILE reports times with millisecond accuracy
1250 (thanks to Luis Oliveira)
1251 * optimization: CHAR-CODE type derivation has been improved, making
1252 TYPEP elimination on subtypes of CHARACTER work better. (reported
1253 by Tobias Rittweiler, patch by Paul Khuong)
1254 * bug fix: setting alien structure fields of type struct by value now
1255 computes the right offset for the memory copy.
1256 * bug fix: compilation problem involving inlined calls to aliens with
1257 result type VOID. (reported by Ken Olum)
1258 * bug fix: #235a; sequential inline expasion in different policies no
1259 longer reuses the functional from the previous expansion site.
1260 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1261 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1262 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1263 cause an implied type redefinition. Regression from 1.0.21.29.
1264 * bug fix: sign-extension of small signed return values now works with C
1265 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1266 * improvements to the Windows port:
1267 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1268 Westfold, thanks to Rudi Schlatte)
1270 changes in sbcl-1.0.24 relative to 1.0.23:
1271 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1272 vector of a multidimensional SIMPLE-ARRAY.
1273 * new feature: the system now signals a continuable error if standard
1274 readtable modification is attempted. (thanks to Tobias Rittweiler)
1275 * new feature: DIRECTORY has been extended with a non-standard keyword
1276 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1277 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1278 has been robustified and documented better. (thanks to Robert Goldman)
1279 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1280 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1281 * tradeoff: constant FORMAT control strings are now compiled unless
1282 SPACE > SPEED (previously only when SPEED > SPACE.)
1283 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1285 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1287 * bug fix: lexical type declarations are now correctly reported by
1288 SB-CLTL2. (reported by Larry D'Anna)
1289 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1290 using UTF-8 as external format. (thanks to Luis Oliveira)
1291 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1292 are signalled correctly. (thanks to Stas Boukarev)
1293 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1294 designator. (thanks to Tobias Rittweiler)
1295 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1296 designator, and returns T instead of the function. (thanks to
1298 * bug fix: direct superclasses of STANDARD-CLASS and
1299 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1300 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1301 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1302 when no class with the named slot yet exists no longer causes a
1303 compile-time style-warning.
1304 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1305 in safe code. (reported by Didier Verna)
1306 * bug fix: #430; nested structure constructors can stack allocate.
1307 * bug fix: on some 64-bit platforms dynamic space size was truncated
1308 to #xffff0000 bytes. (reported by Benjamin Lambert)
1309 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1310 REPL unusable. (reported by Daniel Herring)
1311 * bug fix: return values of READ-SEQUENCE did not take :START into
1312 account on file streams, regressions since 1.0.12.22. (reported by
1313 Thomas Russ, patch by Paul Khuong)
1314 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1315 method specializer used to confuse permuation vector optimization.
1316 * bug fix: system inserted bogus implicit type declarations for local
1317 special variables in DEFMETHOD bodies.
1318 * bug fix: #354; duplicated frames in backtraces due to
1319 non-tail-call-optimized XEPs to functions with return type NIL
1321 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1322 initializes structure object slots according to DEFSTRUCT initforms,
1323 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1324 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1325 (reported by Bruno Haible and Stephen Wilson)
1326 * bug fix: #395; fill-pointer output streams used now support
1327 element-type BASE-CHAR as well.
1328 * bug fix: compiler error when attempting to derive return value of
1329 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1331 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1333 * bug fix: Mac OS X binaries should now be portable between Leopard
1336 changes in sbcl-1.0.23 relative to 1.0.22:
1337 * enhancement: when disassembling method functions, disassembly
1338 for the associated fast function is also produced.
1339 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1341 * optimization: printing with *PRINT-PRETTY* true is now more
1342 efficient as long as the object being printed doesn't require
1343 special handling by the pretty printer.
1344 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1345 now interact correctly with type declarations.
1346 * partial bug fix: PCL detects infinite recursion during wrapper
1347 validation. (thanks to Attila Lendvai)
1348 * bug fix: #426; nested function calls are inlined properly.
1349 Previously if FOO was an inline function, in calls of the form
1350 (FOO (FOO ...)) the outer call was not inlined.
1351 * bug fix: long long arguments passed in registers to alien
1352 functions on PowerPC Linux and NetBSD are now handled correctly
1353 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1355 changes in sbcl-1.0.22 relative to 1.0.21:
1356 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1357 for the shared object in the current directory, but passes the native
1358 namestring of the designated pathname to the operation system's shared
1359 object loading function as-it.
1360 * minor incompatible change: --disable-debugger toplevel option now takes
1361 effect before processing of initialization files and --eval or --load
1363 * new feature: new commandline argument: --script, which supports
1364 shebang lines. See documentation for details. (based on work by
1366 * new feature: SAVE-LISP-AND-DIE can save current values of
1367 --dynamic-space-size and --control-stack-size in the executable core,
1368 causing it to skip normal runtime option processing. See documentation
1369 for details. (thanks to Zach Beane)
1370 * enhancement: inoccous calls to EVAL or generic functions dispatching
1371 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1372 * enhancement: the system no longer resignals errors from --load and
1373 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1374 associated with the original error to be lost. (thanks to Ariel
1376 * enhancement: :DONT-SAVE keyword argument has been added to
1377 LOAD-SHARED-OBJECT for controlling interaction with
1378 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1379 the effects of an earlier LOAD-SHARED-OBJECT call.
1380 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1381 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1382 provided. (reported by Cedric St-Jean)
1383 * bug fix: circularity handling in the reader did not treat raw
1384 structure slots correctly. (reported by Cedric St-Jean)
1385 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1386 file descriptors when there were none.
1387 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1388 was broken. (reporteed by Willem Broekema)
1389 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1390 pathnames without a directory.
1391 * bug fix: COMPILE-FILE did not warn about undefined variable
1392 references at toplevel, and LOAD of the resulting fasl did
1393 not signal an error.
1394 * bug fix: functions with non-required arguments used to end up with
1395 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1396 * bug fix: redefining a function with non-required arguments didn't
1397 update the system's knowledge about its call signature properly.
1398 * bug fix: fixed #431; incompatible alien record type redefinitions
1399 are detected and handled. (reported by Neil Haven)
1400 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1401 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1403 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1404 after alien stack frames.
1405 * bug fix: strings passed to mk{s,d}temp lacked null termination
1407 changes in sbcl-1.0.21 relative to 1.0.20:
1408 * new feature: the compiler is able to track the effective type of a
1409 generic function across method addition and removal.
1410 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1411 appropriately typed structure slots without locking.
1412 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1413 information like those gathered by TIME using a programming-friendly
1415 * new feature: TIME reports time taken even if the form performs a
1416 non-local transfer of control.
1417 * enhancement: reduced conservativism on GENCGC platforms: on
1418 average 45% less pages pinned (measured from SBCL self build).
1419 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1420 mutate constant symbols or violate declaimed type of the symbol.
1421 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1422 sleeping on the semaphore in heavily contested semaphores.
1423 * bug fix: semaphores and condition variables were not interrupt
1425 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1426 owned by other threads anymore.
1427 * bug fix: FIND on lists called KEY outside the specified
1428 subsequence. (reported by budden)
1429 * bug fix: LOG doesn't use single-float intermediate results when
1430 given mixed integer and double-float arguments, leading to better
1431 precision. (reported by Bob Felts)
1432 * bug fix: LOG with base zero returned values of inconsistent type.
1434 changes in sbcl-1.0.20 relative to 1.0.19:
1435 * minor incompatible change: OPTIMIZE qualities
1436 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1437 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1438 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1439 * documentation: some slot access efficiency guidelines have been
1440 added to the user manual.
1441 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1442 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1443 as ASSOC and MEMEBER.
1444 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1445 to more efficient EQ-comparison versions more often.
1446 * optimization: enhanced derivation of DOLIST iteration variable type
1448 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1450 * optimization: runtime lookup of function definitions can be
1451 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1452 * optimization: compiler is able to derive the return type of
1453 (AREF (THE STRING X) Y) as being CHARACTER.
1454 * optimization: CLRHASH on empty hash-tables no longer does pointless
1455 work. (thanks to Alec Berryman)
1456 * optimization: REPLACE deftransforms don't punt when :START1 or
1458 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1459 no longer emits a code deletion note. (reported by Andrew
1461 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1462 functions with an odd number of &OPTIONAL arguments, a &REST
1463 argument, and one or more &KEY arguments at the call site.
1464 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1465 arguments appeared at call sites as well.
1466 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1467 READ-LINE &co can no longer read from them afterwards. (reported
1469 * bug fix: fixed #427: unused local aliens no longer cause compiler
1470 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1472 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1473 alien-stack leakage. (reported by Andy Hefner)
1474 * bug fix: PROGV signals an error when an attempt to violate declared
1475 type of a variable or bind a constant is made.
1476 * bug fix: SET signals an error when an attempt to violate declared
1477 type of a variable is made.
1478 * bug fix: restart computation during the execution of a restart
1479 test function no longer causes infinite recursion. (reported by
1481 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1482 signals an error. (thanks to Pierre Mai)
1483 * bug fix: EXPORT left symbol unexported in conflict situations.
1484 (thanks to Michael Weber)
1485 * bug fix: correctly handle name conflicts involving CL:NIL.
1486 (thanks to Michael Weber)
1487 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1488 conflicts arising from USEing package with conflicting symbols
1489 correctly. (thanks to Michael Weber)
1491 changes in sbcl-1.0.19 relative to 1.0.18:
1492 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1493 warnings that go otherwise unhandled will be muffled if they are
1494 of the type that's the value of this variable.
1495 * optimization: stack allocation is slightly more efficient on x86
1497 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1498 where a raw slot always is initialized using the initform whose
1499 type is not know sufficiently well a compile-time are now compiled
1500 correctly. (reported by John Morrison)
1501 * bug fix: compiler no longer makes erronous assumptions in the
1502 presence of non-foldable SATISFIES types.
1503 * bug fix: stack analysis missed cleanups of dynamic-extent
1504 arguments in non-let-converted calls to local functions.
1505 * improvements to the Windows port:
1506 ** adjusted address spaces for building on both Win32 and
1507 Win64. (thanks for John Connors)
1508 * fixed some bugs revealed by Paul Dietz' test suite:
1509 ** interval arithmetic during type derivation used inexact integer
1510 to single-float coercions.
1511 ** arithmetic operations involving large integers and single
1512 floats give the same results in compiled and interpreted code.
1513 ** deriving the result type of COERCE no longer signals an error
1514 if the derived type of the second argument is a MEMBER type
1515 containing invalid type specifiers.
1516 ** ADJOIN with constant NIL as second argument works correctly.
1517 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1519 changes in sbcl-1.0.18 relative to 1.0.17:
1520 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1521 profiles only the current thread.
1522 * minor incompatible change: changes to SYMBOL-VALUE of constants
1523 defined with DEFCONSTANT now signal an error.
1524 * enhancement: SB-SPROF now has support for wallclock profiling,
1525 and is also able to profile specific threads. REPORT output
1526 has also additional sorting options.
1527 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1529 * optimization: structure allocation has been improved
1530 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1531 ** out of line constructors are ~10% faster.
1532 ** inline constructors are ~15% faster.
1533 ** inline constructors are capable of dynamic extent allocation
1534 (generally on x86 and x86-64, in some cases on other platforms
1536 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1538 * optimization: file compiler is now able to coalesce non-circular
1539 lists, non-base strings, and bit-vectors. Additionally, constants
1540 are never referenced through SYMBOL-VALUE at runtime.
1541 * optimization: code defining methods on PRINT-OBJECT (and other
1542 generic functions in the COMMON-LISP package) now loads faster.
1543 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1545 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1546 fasl is now deleted. (reported by Attila Lendvai)
1547 * bug fix: READ-LINE always returned NIL for the last line in files.
1548 (reported by Yoshinori Tahara)
1549 * bug fix: more accurate disassembly annotations of foreign function
1550 calls. (thanks to Andy Hefner)
1551 * bug fix: trimming non-simple strings and non-string string
1552 designators when the there is nothing to trim works properly.
1553 (thanks to James Knight)
1554 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1555 (thanks to Travis Cross)
1556 * fixed some bugs revealed by Paul Dietz' test suite:
1557 ** NIL is a valid function name (regression at 1.0.13.38)
1558 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1559 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1560 fill pointers properly (regression at 1.0.12.23)
1561 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1562 displacement indices properly (regression at 1.0.12.23)
1564 changes in sbcl-1.0.17 relative to 1.0.16:
1565 * temporary regression: user code can no longer allocate closure
1566 variable storage on stack, due to bug 419 without explicitly
1567 requesting it. Please consult sbcl-devel for advice if you need to
1568 use this feature in the meanwhile.
1569 * new feature: runtime argument --control-stack-size can be used to
1570 adjust thread default control stack size.
1571 * enhancement: improved TIME output
1572 ** all times are reported using the measured accuracy (milliseconds
1573 for real and GC times, microseconds for everything else.)
1574 ** processor cycle counts on x86 and x86-64.
1575 ** interpreted forms are counted for both evaluator modes.
1576 ** number of lambdas converted by the compiler is reported.
1577 ** CPU percentage report (computed from real and total run time.)
1578 ** more comprehensive run time reporting, using a condenced format
1579 ** interperted form, lambda, and page fault counts are omitted
1581 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1583 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1584 * optimization: two argument forms of LAST are upto ~10% faster
1585 in normal SPEED policies.
1586 * optimization: NCONC no longer needs to heap cons its &REST list
1587 in normal SPEED policies.
1588 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1589 to Sidney Markowitz)
1590 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1591 regression since 1.0.9.1. (thanks to Eric Marsden)
1592 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1593 since 1.0.15.36. (thanks to Paul Khuong)
1594 * bug fix: LAST when always returned the whole list when given a bignum
1595 as the second argument.
1596 * bug fix: dynamic extent allocation of nested lists and vectors
1597 could leak to otherwise accessible parts.
1598 * bug fix: invalid optimization of heap-allocated alien variable
1600 * bug fix: fasl header checking is less vulnerable to different
1601 platform word lengths.
1602 * bug fix: more correct assembler syntax for GNU binutils
1603 2.18.50.0.4 support. (thanks to Marijn Schouten)
1604 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1606 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1607 declarations) successfully. (reported by Attila Lendvai)
1609 changes in sbcl-1.0.16 relative to 1.0.15:
1610 * minor incompatible change: revert the changes to sb-posix's error
1611 signaling added in 1.0.14.
1612 * minor incompatible change: change PROBE-FILE back to returning
1613 NIL whenever we can't get a truename, as was the case before 1.0.14.
1614 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1615 inherits from ERROR instead of just CONDITION.
1616 * new feature: SB-INTROSPECT can provide source locations for instances
1617 as well. (thanks to Tobias Rittweiler)
1618 * optimization: binding special variables now generates smaller code
1619 on threaded platforms.
1620 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1621 and cases where no :TEST is given but the compiler can infer that
1622 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1623 * optimization: better LOGNOT on fixnums.
1624 * optimization: modular arithmetic for a particular requested width
1625 is implemented using a tagged representation unless a better
1626 representation is available.
1627 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1628 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1629 for wellformedness and returns a specialized vector. (reported by
1630 Francois-Rene Rideau)
1631 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1632 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1633 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1634 unscheduling timer at the same time as another timer fires.
1635 * bug fix: don't reschedule timers for dead threads.
1636 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1637 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1638 bogus errors if select() was interrupted.
1639 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1641 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1642 * enhancement: cleaner backtraces for interactive interrupts, as
1643 well as other cases where the interesting frames used to be
1644 obscured by interrupt handling frames.
1645 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1646 now supported, and tracing a whole package using (TRACE "FOO") now
1647 traces SETF-functions as well.
1648 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1649 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1650 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1651 * unreadably printed representation of hash-tables now includes
1653 * bug fix: partially fixed #188: type propagation from assignments
1654 is now more efficient.
1655 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1656 'DOUBLE-FLOAT) are not flushable.
1657 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1658 full address of the object, and none of the tag bits.
1659 * bug fix: readably printing hash-tables now respects other printer
1660 control variables. (reported by Cedric St-Jean)
1661 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1662 keyword with MAKE-HASH-TABLE.
1663 * bug fix: export SB-POSIX:MKSTEMP.
1664 * bug fix: SORT was not interrupt safe.
1665 * bug fix: XREF accounts for the last node of each basic-block as
1667 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1668 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1669 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1670 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1671 create obsolete instances in the case of redefinition or
1672 obsoletion of a superclass. (thanks to Andy Hefner)
1673 * bug fix: Support for the Alpha architecture has been revived; it had
1674 suffered somewhat from lack of maintenance since sbcl-1.0.
1675 * improvements to the Windows port:
1676 ** The system detects the codepage to use at startup, instead of
1677 using the value from the saved core. (thanks to Kei Suzuki)
1679 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1680 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1681 (see documentation for details.)
1682 * revived support for OpenBSD (contributed by Josh Elsasser)
1683 * partially fixed bug #108: ROOM no longer suffers from occasional
1684 (AVER (SAP= CURRENT END)) failures.
1685 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1686 bodies no longer cause a WARNING to be signalled. (reported by
1688 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1689 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1690 the bug in TRUNCATE.) (reported by Michael Weber)
1691 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1692 no samples. (reported by Andy Hefner)
1693 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1694 no longer appear as (NIL ...) frames in backtraces.
1695 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1696 is now actually exported from SB-EXT as documented. (reported by
1698 * bug fix: sb-aclrepl now correctly understands how to inspect
1699 single-floats on 64-bit platforms where single-floats are not boxed.
1700 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1701 yet been finalized. (reported by Levente Meszaros)
1702 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1703 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1704 SBCL-specific optimize qualities.
1706 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1707 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1708 an executable in the search path, and does so in the child
1709 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1710 been removed; it can be found in the CVS history, for somebody who
1711 needs that search behavior (see the manual).
1712 * minor incompatible change: compiler policy re. weakening type
1713 checks has changed: now type checks are weakened only if SAFETY < 2
1715 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1716 unparsing of directory pathnames as files. Analogously,
1717 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1718 filename to parse into a directory pathname.
1719 * enhancement: implicit generic function creation now signals a
1720 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1721 users can bind handlers for and muffle around calls to LOAD.
1722 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1723 to be used (using the default stream external format), and allows
1724 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1725 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1726 strings and vectors whose element-type or simplicity is not fully
1727 known at compile-time.
1728 * optimization: STRING-TRIM and related functions no longer allocate
1729 a new string when no trimming needs to be performed. These functions
1730 are also faster than before when the input string has been declared
1732 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1733 * optimization: READ-LINE is significantly faster for files containing
1735 * optimization: non-open coded uses of character comparison operators
1736 (e.g. char=) no longer cons when called with more than one parameter
1737 on platforms supporting dynamic-extent allocation.
1738 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1739 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1740 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1742 * bug fix: some sequence functions elided bounds checking when
1744 * bug fix: too liberal weakening of union-type checks when SPEED >
1746 * bug fix: more bogus fixnum declarations in ROOM implementation
1749 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1750 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1751 :SYNCHRONIZED argument, which makes the hash-table safe for
1752 concurrent accesses (but not iteration.) See also:
1753 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1754 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1755 * optimization: CONCATENATE on strings is an order of magnitude faster
1756 in code compiled with (> SPEED SPACE).
1757 * optimization: SUBSEQ is ~50% faster on lists.
1758 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1759 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1760 END is smaller then START.
1761 * bug fix: SB-PROFILE will no longer report extra consing for nested
1762 calls to profiled functions.
1763 * bug fix: ROOM implementation had bogus fixnum declarations which
1764 could cause type-errors when calling ROOM on large images.
1765 * bug fix: if file compilation is aborted, the partial fasl is now
1766 deleted, and COMPILE-FILE returns NIL as the primary value.
1767 * bug fix: number of thread safety issues relating to SBCL's internal
1768 hash-table usage have been fixed.
1769 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1770 be returned from its body when the values were being returned
1771 using unknown-values return convection and the W-P-O was wrapped
1772 inside an UNWIND-PROTECT.
1773 * bug fix: sb-posix should now compile again under Windows, enabling
1774 slime to work again.
1776 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1777 * incompatible change: hash-table accessor functions are no longer
1778 automatically protected by locks. Concurrent accesses on the same hash-table
1779 from multiple threads can give inconsistent results or even corrupt the
1780 hash-table completely. Multi-threaded applications should do their own
1781 locking at the correct granularity. In the current implementation it is
1782 still safe to have multiple readers access the same table, but it's not
1783 guaranteed that this property will be maintained in future releases.
1784 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1785 and will signal an error at runtime.
1786 * enhancement: SB-THREAD package now exports a semaphore interface.
1787 * enhancement: CONS can now stack-allocate on x86 and
1788 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1790 * enhancement: nested lists can now be stack allocated on
1791 platforms providing stack allocation support.
1792 * enhancement: dynamic-extent support has been extended to support
1793 cases where there are multiple possible sources for the stack
1795 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1796 if the mutex is uncontested on Linux.
1797 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1798 as specified by the CLHS. (thanks to Tobias Rittweiler)
1799 * bug fix: NaN comparison now works on x86-64.
1800 * bug fix: CLOSE :ABORT T on a stream with pending output now
1802 * bug fix: instances of non-standard metaclasses using standard
1803 instance structure protocol sometimes missed the slot type checks
1805 * bug fix: known functions can be inlined in high-debug code.
1807 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1808 * minor incompatible change: the MSI installer on Windows no longer
1809 associates .lisp and .fasl files with the installed SBCL.
1810 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1811 on Windows. (thanks to Luis Oliviera)
1812 * new feature: SB-CLTL2 contrib module now implements
1813 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1814 * optimization: scavenging weak pointers is now more efficient,
1815 requiring O(1) instead of O(N) per weak pointer to identify
1816 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1817 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1818 method bodies using constant slot-names when the first argument is
1819 a specializer parameter for the method.
1820 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1821 names, when the class of the instance is a direct instance
1822 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1823 as slow as the constant slot-name case.)
1824 * optimization: member type construction is now O(N) instead
1826 * optimization: UNION and NUNION are now O(N+M) for large
1827 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1829 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1830 now more readable in environments like Slime which display it.
1831 (thanks to Tobias C. Rittweiler)
1832 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1833 was able to infer the correct argument type for the object on which
1834 the CAS operation was being performed.
1835 * bug fix: copy propagation interfered with parallel assignment
1836 semantics in local calls. (reported by Paul Khuong)
1837 * bug fix: the signed modular fixnum shift compiled to wrong code on
1838 x86 and x86-64. (spotted by a slight modification to some of
1841 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1842 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1843 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1844 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1846 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1847 and generic function now print the object identity for anonymous
1848 instances. (thanks to Attila Lendvai)
1849 * enhancement: as an extension to MOP, SBCL now supports SETF of
1850 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1851 (thanks to Attila Lendvai)
1852 * enhancement: sb-cover has an alternate annotation mode which puts
1853 the form annotations at the car of the form, instead of annotating
1854 it completely. The benefit of this mode is that it shows better
1855 which forms were instrumented by the compiler.
1856 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1857 by printer control variables. (reported by Dan Corkill)
1858 * bug fix: system leaked memory when delayed output was performed by
1859 the OS in smaller chunks then expected. (thanks to David Smith)
1860 * bug fix: system leaked memory when file streams were not closed
1862 * bug fix: large objects written to slow streams that were modified
1863 after the write could end up with the modified state written to
1864 the underlying file descriptor.
1865 * bug fix: multiple threads operating in parallel on the same stream
1866 could cause buffer-overflows.
1867 * bug fix: source location information is stored correctly
1868 (broken since 1.0.6). This bug would generally show up as the
1869 Slime debugger highlighting the wrong form when the sldb-show-source
1871 * bug fix: Branch forms are again annotated as branches in the sb-cover
1873 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1874 on x86-64. (reported by Gregory Vanuxem)
1875 * bug fix: EQUALP could return wrong results for structures with raw
1876 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1877 word). (reported by Vjacheslav Fyodorov)
1878 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1881 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1882 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1883 atomic compare-and-swap operations on threaded platforms.
1884 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1885 allows assigning a global minimum value to optimization qualities
1886 (overriding proclamations and declarations).
1887 * enhancement: closed over variables can be stack-allocated on x86
1889 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1891 * optimization: slot definition lookup is now O(1). This speeds up
1892 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1893 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1894 * optimization: ASSOC and MEMBER can now be open-coded for all
1895 combinations of keyword arguments when second argument is constant
1896 and SPEED >= SPACE. In other cases a specialized version is
1898 * bug fix: using obsoleted structure instances with TYPEP and
1899 generic functions now signals a sensible error.
1900 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1901 (reported by Kristoffer Kvello)
1902 * bug fix: backtrace construction is now more careful when making
1903 lisp-objects from pointers on the stack, to avoid creating bogus
1904 objects that can be seen by the GC.
1905 * bug fix: defaulting of values in contexts expecting more than 7
1906 variables now works on x86-64. (reported by Christopher Laux)
1907 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1909 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1910 as the property-list of a symbol.
1911 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1912 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1913 situations requested, are once again file-compileable. (reported
1916 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1917 * MOP improvement: support for user-defined subclasses of
1918 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1919 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1920 the expansion of DEFMETHOD, is responsible for generating a form
1921 which creates a list of specializers when evaluated. Additional
1922 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1923 debugging and introspective support.
1924 * minor incompatible change: the (unsupported) spinlock interface
1925 has changed: free spinlock now has the value NIL, and a held spinlock
1926 has the owning thread as its value.
1927 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1928 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1930 * enhancement: name of a socket-stream is now "a socket" instead of
1931 "a constant string".
1932 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1933 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1934 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1935 for generic functions. (Thanks to Tobias C. Rittweiler)
1936 * optimization: bignum printing speed has been improved by 20-40%
1937 (depending on the bignum size.)
1938 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1940 * bug fix: the cache used by the CLOS to store precomputed effective
1941 methods, slot offsets, and constant return values is now thread and
1943 * bug fix: generic function dispatch function updating is now thread
1944 and interrupt safe (in the sense that the known issues have been
1946 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1947 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1948 * bug fix: asdf systems with dependencies to the SB-POSIX or
1949 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1950 * bug fix: interrupt safety of applicable method computation has been
1953 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1954 * new contrib: sb-cover, an experimental code coverage tool, is included
1955 as a contrib module.
1956 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1957 significantly faster.
1958 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1959 produce more efficient code on x86-64 if the compiler can determine
1960 that (+ INDEX <constant>) does not require a bounds check and FOO
1961 has an element type at least 8 bits wide.
1962 * enhancement: a new, experimental synchronous timeout facility is
1963 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1964 * enhancement: when a symbol name conflict error arises, the
1965 conflicting symbols are always printed with a package prefix.
1966 (thanks to Kevin Reid)
1967 * enhancement: stepping is now once again supported on the SPARC and
1968 MIPS platforms. (It is also now more likely to work on CheneyGC
1970 * enhancement: sb-sprof can now also track and report accurate call
1972 * bug fixes: the treatment of non-standard subclasses of
1973 SB-MOP:SPECIALIZER is more correct.
1974 * incompatible change: PURIFY no longer copies the data from the
1975 dynamic space into the static and read-only spaces on platforms
1976 that use the generational garbage collector
1977 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1979 * bug fix: GC race condition occasionally resulting in crashes with
1980 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1982 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1984 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1985 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1986 * bug fix: an asynchronous interrupt could previously leave the
1987 system running with GC inhibited.
1988 * bug fix: a DECLARE form evaluated at top-level now causes an error
1989 rather than silently (or verbosely) returning NIL.
1990 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1991 result in a error being signalled due to source form lookup errors.
1992 (reported by Peter Graves)
1994 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1995 * incompatible change: removed writer methods for host-ent-name,
1996 host-ent-addresses -- changing the values did not update the DNS
1998 * minor incompatible change: changed experimental JOIN-THREAD interface
1999 * documentation: the manual now lists reader and writer methods
2000 in class slot documentation sections. (thanks to Richard M Kreuter)
2001 * documentation: unwinding from asyncronous events has been
2002 documented as unsafe.
2003 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2004 in multithreaded application code.
2005 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2006 platforms. (thanks to James Anderson for the optimization hint)
2007 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2009 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2010 variants no longer cons.
2011 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2012 their NOT- variants no longer cons.
2013 * optimization: EQUAL hash tables no longer use SXHASH for objects
2014 of all data types, but instead use an EQL hash for types for which
2015 EQUAL is the same as EQL.
2016 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2017 are significantly faster.
2018 * optimization: new STRING-OUTPUT-STREAM implementation is much
2019 faster for large outputs and conses 30% less on average.
2020 * enhancement: XREF information is now collected for references made
2021 to global variables using SYMBOL-VALUE and a constant argument.
2022 * enhancement: SIGINT now causes a specific condition
2023 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2024 * bug fix: FILE-POSITION used to signal an error in some cases where
2025 ANSI requires it to return NIL.
2026 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2027 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2028 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2030 * bug fix: bad type declaration in the CLOS implementation has
2031 been fixed. (reported by James Anderson)
2032 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2033 (thanks to Lutz Euler)
2034 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2035 required by the CLHS. (reported by Samium Gromoff)
2036 * bug fix: dead unbound variable references now signal an error.
2037 (reported by Marco Monteiro)
2038 * bug fix: / with an unused value was being deleted in safe code.
2039 (thanks to Marco Monteiro and Kevin Reid)
2040 * bug fix: number of characters that can be written onto a single
2041 line in a file is unlimited.
2042 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2043 been fixed by inhibiting interrupts for when GC is disabled.
2044 * bug fix: some interrupt safety issues with GETHASH, (SETF
2045 GETHASH), CLRHASH and REMHASH have been fixed.
2046 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2047 specifier no longer causes infinite recursion.
2048 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2049 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2050 * bug fix: an &environment argument with the correct variable information
2051 is passed to macros that are expanded during byte compilation.
2052 (reported by Samium Gromoff)
2053 * bug fix: a logic error was causing the hash function for bignums to
2054 have excessive amounts of collisions. (reported by Faré Rideau)
2055 * bug fix: modifying the contents of an array could change the return
2056 value of SXHASH on that array, which is only allowed for strings
2057 and bit vectors. (bug introduced in 0.9.16)
2058 * improvement: the x86-64/darwin port now passes all tests (except
2059 for the debugger tests) but should still be considered
2060 experimental until this is fixed.
2061 * improvement: a style-warning is signaled for CASE (etc) clauses with
2062 duplicate keys. (thanks to Kevin Reid)
2063 * improvement: macos/x86 and macos/x86-64 now use mach exception
2064 handlers for dealing with illegal instructions (for trapping and
2065 error handling) and memory protection violations (for GC).
2067 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2068 * new platform: experimental support for x86-64/darwin (MacOS).
2069 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2070 and getnameinfo sockets functions are used instead of gethostbyaddr
2071 and gethostbyname, on platforms where the newer functions are available.
2072 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2074 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2075 don't print the startup banner, but behave as if --noinform was passed
2076 as a command line argument. (thanks to Kevin Reid)
2077 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2078 * optimization: code using alien values with undeclared types is much faster.
2079 * optimization: the compiler is now able to open code SEARCH in more cases.
2080 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2081 * bug fix: using standardized COMMON-LISP special variables as loop
2082 variables no longer signals bogus package lock violations. (reported
2084 * bug fix: declaring local loop variables to be of a range-limited type
2085 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2086 (reported by Andras Simon)
2087 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2088 bugs remain on x86-64.)
2089 * bug fix: the #= and ## reader macros now interact reasonably with
2090 funcallable instances.
2091 * bug fix: type-checks for function arguments were compiled using the
2092 compiler policy settings of the wrong lexical environment (in 1.0.2
2094 * bug fix: SHADOW accepts characters as string designators, as required
2095 by the spec (thanks to Eric Marsden)
2096 * bug fix: fixed GC safety issues when foreign functions are called with
2097 non-base strings as arguments
2098 * bug fix: more consistent error output for fatal-compiler-warnings, like
2100 * bug fix: functions with proper names were showing up as NIL in
2101 backtraces (reported by Edi Weitz, regression in 1.0.2)
2103 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2104 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2105 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2106 produce more efficient code on the x86 if the compiler can determine
2107 that (+ INDEX <constant>) does not require a bounds check and FOO
2108 has an element type at least 8 bits wide.
2109 * bug fix: references to undefined variables are handled the same way
2110 in toplevel forms as in the normal compiler
2111 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2113 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2114 (thanks to Jon Buller)
2115 * improvement: faster compilation times for complex functions
2116 * improvement: added readlink support to SB-POSIX (thanks to Richard
2119 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2120 * improvement: experimental support for mach exception handling on
2121 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2123 * improvement: support for GBK external format.
2124 (thanks to Chun Tian (binghe))
2125 * improvement: the debugger now displays variables that have been closed
2126 over, in code compiled with (DEBUG 2) or higher
2127 * improvement: support for executable cores on NetBSD (thanks to
2129 * new feature: added a RESTART-FRAME debugger command
2130 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2131 be used to provide an implementation for FILE-POSITION on Gray streams
2132 (thanks to Eric Marsden)
2133 * new feature: add syslog, openlog and closelog support to SB-POSIX
2134 (thanks to Richard Kreuter)
2135 * optimization: the function call overhead in code compiled with
2136 a high DEBUG optimization setting is significantly
2137 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2138 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2139 (thanks to Tony Martinez)
2140 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2141 evaluated once (reported by Kevin Reid)
2142 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2143 works again (thanks to Kilian Sprotte)
2144 * bug fix: an error is signaled for tagbodies with duplicate tags
2145 (thanks to Stephen Wilson)
2146 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2147 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2148 stack frames from alien callbacks.
2149 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2150 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2151 65k pages (thanks to David Woodhouse)
2152 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2154 changes in sbcl-1.0.1 relative to sbcl-1.0:
2155 * new platform: FreeBSD/x86-64, including support for threading.
2156 * new feature: the compiler stores cross-referencing information
2157 about function calls (who-calls), macroexpansion (who-macroexpands)
2158 and special variables (who-binds, who-sets, who-references) for code
2159 compiled with (< SPACE 3). This information is available through the
2160 sb-introspect contrib.
2161 * new feature: users may subclass SEQUENCE, and have instances of
2162 these classes interoperate with standard Common Lisp functions if
2163 a number of methods are defined. (This feature is experimental
2164 and the interface subject to change based on feedback from SBCL
2165 users and the general community)
2166 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2167 x86/x86-64, rather than the previous fixed depth of 8
2168 * improvement: another pthread back-end of mutex "pthread-futex".
2169 * bug fix: non-ascii command-line arguments are processed correctly
2170 (thanks to Yaroslav Kavenchuk)
2171 * bug fix: non-required arguments were not passed correctly when a method
2172 defined using DEFMETHOD was called from a mop-generated method using
2173 CALL-NEXT-METHOD (reported by Pascal Costanza)
2174 * bug fix: recursion is now permitted in accessors through
2175 SLOT-UNBOUND. (reported by Pascal Costanza)
2176 * bug fix: an error was signaled at startup if the HOME environment
2177 variable was defined, but had an empty value (reported by Peter Van Eynde)
2178 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2179 signal a PROGRAM-ERROR, not a BUG.
2180 * bug fix: SB-POSIX:READDIR works when built with large file support.
2181 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2183 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2184 for better automatic indentation support. (thanks to Matt Pillsbury)
2185 * optimization: loading generic functions no longer takes O(n^2) time,
2186 proportional to the amount of methods in the generic function
2187 (reported by Todd Sabin and Jeremy Brown)
2188 * optimization: the FIND and POSITION family of sequence functions
2189 are significantly faster on arrays whose element types have been
2191 * improvements to the Windows port:
2192 ** Intermittent heap corruption problems have been fixed. (thanks
2193 to Alastair Bridgewater)
2194 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2196 ** Lisp is able to unwind foreign exception frames from alien
2197 callbacks. (thanks to Alastair Bridgewater)
2199 changes in sbcl-1.0 relative to sbcl-0.9.18:
2200 * improvement: experimental support for threading on FreeBSD/x86.
2201 (thanks to NIIMI Satoshi)
2202 * improvement: runtime option --dynamic-space-size can be used
2203 to set the size of the dynamic space reserved on startup.
2204 * improvement: floating point modes in effect are now saved in
2205 core, and restored on startup.
2206 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2207 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2208 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2209 threads are not running after *SAVE-HOOKS* have run.
2210 * improvement: writes to CLOS instance slots are type-checked in code
2211 compiled with (SAFETY 3)
2212 * improvement: floating-point exception handling on FreeBSD (thanks to
2214 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2215 (thanks to Zach Beane)
2216 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2218 * improvement: added support for the Shift-JIS external format.
2219 (contributed by NIIMI Satoshi)
2220 * improvement: callbacks are supported on Linux/PPC. (thanks to
2222 * bug fix: compiler bug triggered by a (non-standard) VALUES
2223 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2224 * bug fix: file compiler no longer confuses validated and already
2225 dumped structurres. (reported by Kaersten Poeck)
2226 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2227 fill-pointer signals a type-error as required. (thanks to
2229 * bug fix: disassemly of funcallable instances works.
2230 * bug fix: single stepping on PPC.
2231 * bug fix: fix thread-safety problems in the type system (generally
2232 manifesting as nonsensical errors like "STRING is a bad type specifier
2233 for sequences" or "The value 1 is not of type FIXNUM")
2234 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2235 (reported by Josip Gracin)
2236 * bug fix: an error is signaled for attempts to displace arrays with
2237 incompatible element types (thanks to Mario Mommer)
2238 * bug fix: more correct handling of wide characters in debug info
2239 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2240 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2241 and don't cause extra consing
2242 * optimization: MAP and MAP-INTO are significantly faster on vectors
2243 whose elements types have been declared.
2244 * Improvements to SB-SPROF:
2245 ** Support for allocation profiling
2246 ** Reduced profiling overhead, especially for long profiling runs
2247 * Improvements to the Windows port:
2248 ** floating point exceptions are now reported correctly.
2249 ** stack exhaustion detection works partially.
2250 ** more accurate GET-INTERNAL-REAL-TIME.
2251 ** better RUN-PROGRAM behaviour in case of errors in the child
2253 ** PROBE-FILE now simplifies pathnames correctly.
2254 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2255 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2256 1st 1970 (although time timezone data will be unreliable).
2257 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2259 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2260 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2261 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2263 * bug fix: two potential GC deadlocks affecting threaded builds.
2264 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2265 returns T (reported by Anton Kazennikov)
2266 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2267 with non-variable places
2268 * bug fix: remove a race condition in the setting of
2269 funcallable-instance functions, this should make threaded CLOS
2270 code more stable against memory faults.
2271 * bug fix: corruption of specials when unbinding is interrupted by an
2272 asynchronous unwind (reported by Hannu Koivisto)
2273 * improvement: the debugger will now also display local variables that
2274 are only used once, for code compiled with a DEBUG optimization quality
2277 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2278 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2279 * incompatible change: External-format support for FFI calls. The
2280 SB-ALIEN:C-STRING no longer implies an ASCII
2281 external-format. Instead the string is subject to external-format
2282 conversion. Additionally return values of type SB-ALIEN:C-STRING
2283 are by default of type (SIMPLE-ARRAY CHARACTER), not
2284 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2285 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2286 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2287 * incompatible change: SB-EXT package no longer contains the
2288 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2289 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2291 * incompatible change: the single-stepper is no longer available
2292 on Alpha, Mips and Sparc platforms.
2293 * minor incompatible change: the direct superclasses of
2294 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2295 not (STANDARD-OBJECT FUNCTION). This makes the
2296 class-precedence-lists of GENERIC-FUNCTION and
2297 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2299 * minor incompatible change: the default stream external format on
2300 non-unicode SBCL is no longer detected from the locale, but is always
2302 * new feature: Add a version of evaluator that uses an interpreter instead
2303 of the compiler. EVAL still uses the compiler by default, to switch it
2304 to use the interpreter, set the value of the variable
2305 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2306 * minor incompatible change: the single-stepper REPL has been merged
2307 with the normal debugger (see the "Stepping" heading of the debugger help
2308 for more details). The debugger command STEP will no longer switch
2309 to the single-stepper REPL.
2310 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2311 for a type now works.
2312 * bug fix: loading of default sysinit file works. (thanks to Leonid
2314 * bug fix: better detection of circularities in the file-compiler.
2315 (reported by Marco Monteiro)
2316 * bug fix: the CL pathname functions now work with files that have
2317 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2318 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2319 systems with Unix98 pty semantics.
2320 * bug fix: ASDF-INSTALL will now work with bsd tar.
2321 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2323 * bug fix: timers expiring in dead threads no longer cause a
2324 type-error (reported by Paul "Nonny Mouse").
2325 * bug fix: thanks to more lightweight single-stepper instrumentation,
2326 code compiled with (DEBUG 3) will compile and execute significantly faster,
2327 and will have more accurate type-inferencing than before
2328 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2329 whose bindings are modified
2330 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2331 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2332 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2333 CL:SOFTWARE-VERSION with proper version
2335 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2336 * feature: implemented the READER-METHOD-CLASS and
2337 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2338 as specified by AMOP.
2339 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2341 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2342 (thanks to Lutz Euler)
2343 * optimization: hashing of general arrays and vectors has been
2344 improved. (reported by Any Fingerhut)
2345 * enhancement: SB-INTROSPECT is now able to find definitions of
2346 profiled functions. (thanks to Troels Henriksen)
2347 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2348 as well, allowing compiler-macros for SETF-functions to expand.
2349 * enhancement: step-instrumentation no longer wraps known
2350 single-value functions with multiple-value context, allowing
2351 better type inference.
2352 * fixed bug #337: use of MAKE-METHOD in method combination now works
2353 even in the presence of user-defined method classes. (reported by
2354 Bruno Haible and Pascal Costanza)
2355 * fixed bug #339(c): if there are applicable methods not part of any
2356 long-form method-combination group, call INVALID-METHOD-ERROR.
2357 (reported by Bruno Haible)
2358 * fixed bug #361: the :FUNCTION initarg in the protocol for
2359 initialization of methods can now be used to override
2360 internally-produced optimized functions. (reported by Bruno
2362 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2363 system-provided lambda expression no longer cause warnings about
2364 unbound #:|pv-table| symbols.
2365 * bug fix: improved the handling of type declarations and the
2366 detection of violations for keyword arguments with non-constant
2368 * bug fix: potentially erronous calls to PATHNAME and
2369 MERGE-PATHNAMES were being flushed in some cases.
2370 (reported by Richard Kreuter)
2371 * bug fix: compiled calls to TYPEP were mishandling obsolete
2372 instances. (reported by James Bielman and Attila Lendvai)
2373 * bug fix: format strings with ~> without matching ~< no longer
2374 trigger an AVER, but signal an understandable error instead.
2375 (reported by Antonio Martinez)
2376 * bug fix: specifying an output-file without a pathname-type for
2377 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2378 of input-file instead of "fasl". (reported by Robert Dodier)
2379 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2380 (reported by James Y Knight).
2381 * bug fix: compiler-macros-function did not consider the environment
2382 argument for shadowing by local functions.
2383 * bug fix: compiler-macros expansion was inhibited by local INLINE
2385 * bug fix: inline expansions of known functions were subject to
2386 step-instrumentation in high debug policies, leading to problems
2387 with type-inference.
2388 * bug fix: compiler failed to differentiate between different CONS
2389 types in some cases.
2390 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2391 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2392 * bug fix: #368: incorrect use of expressed vs. upgraded array
2394 * bug fix: #306a: more precise unions of array types.
2395 * thread-safety improvements:
2396 ** CONDITION-WAIT could return early on Linux, if the thread was
2397 interrupted and subsequently continued with SIGCONT.
2398 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2400 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2401 * added support for the ucs-2 external format. (contributed by Ivan
2403 * minor incompatible change: pretty printing of objects of type
2404 (cons symbol) is, in the default pprint-dispatch-table, now
2405 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2407 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2408 called later in a class's lifetime, possibly as late as when the
2409 first instance of the class is created. Previously,
2410 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2411 class became finalizeable.
2412 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2413 for multibyte external-format streams. (thanks to "vbzoli")
2414 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2415 with :ALLOCATION :CLASS inherited from superclasses of the
2417 * fixed bug: anonymous classes can now be created using the :NAME
2418 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2419 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2420 * fixed bug: core-files saved with :EXECUTABLE T can again be
2421 executed when SBCL_HOME isn't set. (reported by James Knight)
2422 * fixed bug: toplevel LOCALLY forms with declarations could
2423 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2424 * fixed bug: printing from several different threads using different
2425 values of *print-case* could cause invalid output, due to
2426 some internal special variables of the printer not being bound
2427 thread-locally (reported by Max Mikhanosha)
2428 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2429 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2430 (reported by Pascal Costanza)
2431 * fixed bug: FINALIZE-INHERITANCE is called from
2432 REINITIALIZE-INSTANCE on classes when the class has previously
2433 been finalized, as required by AMOP.
2434 * minor code generation optimizations:
2435 ** better register allocation in CLOS dispatching functions
2436 ** overflow detection when coercing signed bytes to fixnums on x86-64
2437 ** is now implemented with one IMUL instruction instead of three shifts
2438 ** more efficient bit-vector access on x86 and x86-64
2439 ** more efficient access to raw structure slots on x86 and x86-64
2440 * fixed some bugs revealed by Paul Dietz' test suite:
2441 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2442 return its argument.
2444 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2445 * feature: thread support on Solaris/x86, and experimental thread support
2447 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2449 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2450 default method for SLOT-UNBOUND.
2451 * minor incompatible change: prevent the user from specializing the
2452 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2453 somewhat counter to the intent of the protocol, I (CSR) think, and
2454 additionally it just doesn't work in SBCL as currently
2455 implemented, thanks to optimizations (that are always valid for
2456 the other three SLOT-VALUEish functions, but not for the setter).
2457 * minor incompatible change: the :SB-LDB feature is now enabled by
2458 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2459 the low-level debugger.
2460 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2461 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2462 down to an SB-SYS:FD-STREAM, allowing direct communication in
2463 more cases. Temporary files and pipes are still used as a fallback
2465 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2466 on the non-reentrant C functions localtime(3) and gmtime(3).
2467 * bug fix: global optimization policy was not visible in LOCALLY and
2469 * bug fix: class objects can be used as specializers in methods.
2470 (reported by Pascal Costanza)
2471 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2472 with a type error. (reported by blitz_ on #lisp)
2473 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2474 failed with a type error. (reported by Pascal Bourguignon)
2475 * bug fix: merging pathnames against defaults with :DIRECTORY
2476 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2477 (reported by James Y Knight)
2478 * bug fix: saving large (>2GB) cores on x86-64 now works
2479 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2480 constant index and a (simple-array (signed-byte 32)) array
2481 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2482 error (patch by Robert J. Macomber)
2483 * feature: TIME now displays the amount of run-time spent in GC
2484 * bug fix: The debugger now does a better job of respecting
2485 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2486 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2487 workaround for bug 403.)
2488 * bug fix: floating point exception handling now works on FreeBSD
2489 (thanks to NIIMI Satoshi)
2490 * fixed some bugs revealed by Paul Dietz' test suite:
2491 ** MISC.641: LET-conversion were not supposed to work in late
2493 * improvements to the Win32/x86 port:
2494 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2495 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2497 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2498 * new feature: source path information is generated for macro-expansion
2499 errors for use in IDE's like Slime (thanks to Helmut Eller)
2500 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2501 * bug fix: compiler does not loop forever on an invalid type in
2503 * improvement: compilation of most CLOS applications is significantly
2505 * optimization: added a limited bytecode compiler for simple toplevel
2506 forms, speeding up compilation and FASL loading
2507 * bug fix: the statistical profiler now properly distinguishes anonymous
2510 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2511 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2512 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2513 into subclasses of the finalized class. Now user calls to
2514 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2515 system return before any subclasses are finalized.
2516 * minor incompatible change: The reader no longer ignores errors
2517 regarding non-existent packages in #+ and #- feature tests.
2518 * new feature: command line options --no-sysinit, --no-userinit to
2519 inhibit loading the corresponding init files
2520 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2521 for sending data through UDP sockets (thanks to François-René Rideau)
2522 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2523 error is signalled instead (thanks to François-René Rideau)
2524 * minor incompatible change: Error signalling behaviour of lexical
2525 operations violating package locks has changed slightly. Refer to
2526 documentation on package locks for details.
2527 * enhancement: EVAL can process IF-expressions without resorting to the
2529 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2530 constant-folded properly due to missing out-of-line functions.
2531 (reported by Mika Pihlajamäki)
2532 * bug fix: LISTEN sometimes returned T even in cases where no data was
2533 immediately available from the stream
2534 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2535 were reversed. (reported by Levente Mészáros)
2536 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2537 when given a vector displaced to an adjustable array. (reported
2539 * bug fix: derivation of float boundaries from numbers outside the
2540 appropriate float range (reported by John Wiseman)
2541 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2543 * bug fix: precomputing cache entries for generic functions with
2544 some subclasses of specializers as yet invalid does not attempt to
2545 fill a cache line with a negative offset. (reported by Levente
2547 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2548 allow condition class objects as arguments to DOCUMENTATION and
2549 (SETF DOCUMENTATION); only find and set documentation for
2550 structure names for the STRUCTURE doc-type. (suggested by Gary
2552 * improvements to the Win32/x86 port:
2553 ** (user-homedir-pathname) and default initialization file
2554 locations now know about the user's "Documents and Settings"
2555 directory (thanks to Yaroslav Kavenchuk)
2556 ** run-program is implemented (thanks to Mike Thomas)
2557 ** sockets support (thanks to Timothy Ritchey)
2558 ** better backtrace support (thanks to Alastair Bridgewater)
2559 ** sb-grovel supported
2560 ** asdf-install and sb-posix work somewhat
2561 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2562 * improvements to the Solaris/x86 port:
2563 ** works on Solaris 11/Solaris Express
2564 ** floating-point exception handling support
2565 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2566 * fixed some bugs revealed by Paul Dietz' test suite:
2567 ** REMOVE-METHOD returns its generic function argument even when
2568 the method is not one of the generic functions' methods.
2569 ** objects declared as MEMBER types can be admissible arguments to
2570 structure accessors.
2571 ** printing characters should simply be printed by the FORMAT ~:C
2573 ** compiler failure when compiling functions with hairy constant
2574 defaults for optional parameters.
2575 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2576 function, which is already optimized.
2578 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2579 * new platform: experimental support for SBCL x86/Darwin, including
2580 MacOS X 10.4.5 on Intel.
2581 * new feature: Unicode character names are now known to the system
2582 (through CHAR-NAME and NAME-CHAR).
2583 * new feature: the filesystem location of SBCL's core file is
2584 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2585 * minor incompatible change: the contrib modules SB-POSIX and
2586 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2587 this change is to make it easier to distribute
2588 location-independent binaries.
2589 * bug fix: as implied by AMOP, standardized classes no longer have
2590 slots named by external symbols of public packages. (reported by
2592 * optimization: calling functions via constant symbols -- as in
2593 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2594 via the function object as in (FUNCALL #'FOO).
2595 * optimization: on x86 and x86-64, the calling convention for the
2596 case of dealing with an unknown number of values has been altered
2597 to be friendlier to the prediction heuristics implemented,
2598 particularly with reference to CALL and RET pairing. (thanks to
2599 Alastair Bridgewater)
2600 * optimization: on x86, the code for access to thread-local symbol
2601 values and binding/unbinding of thread-local symbols is smaller.
2602 (thanks to Alastair Bridgewater)
2603 * enhancement: CONSTANTP is now able to determine constantness of
2604 more complex forms, including calls to constant-foldable standardized
2605 functions and some special forms beyond QUOTE.
2606 * fixed bug: occasional GC crashes on Solaris/x86
2607 * optimization: x86-64 supports stack allocation of results of simple
2608 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2609 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2610 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2611 (thanks to James Knight)
2612 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2613 by the standard (thanks to Stephen Compall)
2615 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2616 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2617 be used for bundling the runtime and the core file into one
2618 executable binary. This feature is not currently supported on all SBCL
2619 platforms. (thanks to James Bielman and NIIMI Satoshi)
2620 * new feature: a generational or ephemeral garbage collector is now
2621 the default on the PowerPC platform (both Linux and Darwin). The
2622 old Cheney (stop and copy) collector is a build-time option.
2623 (thanks to Cyrus Harmon, after Raymond Toy)
2624 * minor incompatible change: the method by which SBCL finds its
2625 contributed modules has changed; it no longer relies on symbolic
2626 links from an $SBCL_HOME/systems directory, but searches directly
2627 in the subdirectories of $SBCL_HOME.
2628 * enhancement: the dynamic heap size on the Linux/PPC platform is
2629 markedly larger, even using the older Cheney garbage collector.
2630 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2631 certain complicated string types. (reported by Gary King)
2632 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2633 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2634 * fixed bug: DOCUMENTATION on structures no longer signals an
2635 error if no structure type of the right name exists. (reported by
2637 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2638 applicable non-standard primary or :AROUND method on
2639 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2640 no longer cause unbound variable errors. (reported by Kevin Reid)
2641 * fixed bug: metacircle resolution in cases where methods have slots
2642 added before the slots from STANDARD-METHOD. (reported by Jean
2644 * fixed bug: the Power PC assembly code for calling into lisp
2645 sometimes computed its return address wrongly (depending on the
2646 15th bit of the address, fixed at link time). This used to
2647 manifest itself in a segmentation violation while building PCL.
2648 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2649 many others over the years)
2650 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2651 the stack pointer (treated as a signed integer) is negative.
2652 (thanks to Peter van Eynde)
2654 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2655 * new platform: experimental support for the Windows operating
2656 system has been added. (thanks to Alastair Bridgewater)
2657 * fixed several bugs in and robustified the PPC FFI (including
2658 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2659 * bug fix: allow non-simple string symbol names (reported by Paul
2661 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2663 * bug fix: saving a core corrupted callbacks on x86/x86-64
2664 * bug fix: closed a loophole in metacircularity detection and
2665 grounding in the PCL implementation of CLOS.
2666 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2667 (reported by tomppa on #lisp)
2668 * bug fix: clear the direction flag on Lisp -> C transitions, as
2669 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2670 (reported by Andrej Grozin and Hendrik Maryns)
2671 * optimization: major improvements to GC efficiency on GENCGC platforms
2672 * optimization: faster implementation of EQUAL
2673 * optimization: emit more efficient opcodes for some common
2674 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2675 * optimization: several other minor code-generation improvements on x86-64
2676 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2678 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2679 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2680 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2681 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2682 by ANSI as a generic function, and for consistency (SETF
2683 GENERIC-FUNCTION-NAME) is treated likewise.
2684 * fixed bug #233.b: make constraint propagation notice when a variable
2685 value is changed after it is referenced but before it is used
2686 * fixed bug #296: no more arbitrary behaviour from filenames with
2687 odd characters as --load arguments. (reported by Adam Warner)
2688 * fixed bug #390: :CHARACTER-SET pathname components now work as
2689 expected. (reported by Tim Daly Jr)
2690 * fixed bug #391: complicated :TYPE intersections in slot
2691 definitions no longer cause an error in PCL internals.
2692 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2693 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2694 returning the number of octets which would be written to the
2695 file-stream. (thanks to Robert J. Macomber)
2696 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2697 arguments to the internal stream functions. (thanks to David
2699 * bug fix: stack exhaustion is now handled on the x86/SunOS
2700 platform. (thanks to Daisuke Homma)
2701 * bug fix: more accurate ROOM results on GENCGC platforms
2702 * optimization: improved type inference for arithmetic-for
2703 index variables in LOOP
2704 * optimization: faster floating-point SQRT on x86-64
2705 * fixed some bugs revealed by Paul Dietz' test suite:
2706 ** DOCUMENTATION returns NIL instead of "" for method combinations
2707 that don't have a docstring
2709 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2710 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2711 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2712 therefore are not customizeable by user code (as seems to be at
2713 least permitted and maybe required by AMOP). As a consolation,
2714 however, the SBCL implementation of these functions now calls
2715 REINITIALIZE-INSTANCE as specified by AMOP.
2716 * bug fix: slot-definition documentation is propagated as per ANSI
2717 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2718 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2719 argument, as do eslotd initialization methods. (from Pascal
2720 Costanza's "Closer" project)
2721 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2722 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2724 * bug fix: it is now possible to have more than one subclass of
2725 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2726 (reported by Bruno Haible, Pascal Costanza and others)
2727 * bug fix: the dependent update protocol now works for generic
2728 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2729 and Pascal Costanza)
2730 * bug fix: condition-class instances corresponding to
2731 DEFINE-CONDITION forms are now created eagerly. (reported by
2732 Kalle Olavi Niemitalo on comp.lang.lisp)
2733 * bug fix: floating point printing is more accurate in some
2734 circumstances. (thanks to Simon Alexander)
2735 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2736 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2737 * bug fix: callbacks on OS X now preserve stack-alignment.
2738 (thanks to Cyrus Harmon)
2739 * enhancement: the x86-64 disassembler is much better at
2740 disassembling SSE instructions. (thanks to Lutz Euler)
2741 * enhancement: CHECK-TYPE on a variable now allows type-inference
2742 (thanks to Vincent Arkesteijn)
2743 * optimization: improved performance of EUC-JP external format.
2744 (thanks to NIIMI Satoshi)
2745 * optimization: performance improvements to IO on file streams of
2746 :ELEMENT-TYPE CHARACTER
2747 * optimization: much faster memory allocation on x86-64
2748 * optimization: faster garbage collections (latency and throughput)
2750 * optimization: faster bignum subtraction and division on x86 and x86-64
2751 (thanks to Lutz Euler)
2752 * optimization: more accurate type-inference for loops that use a
2753 floating point index variable or a negative step.
2755 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2756 * bug fix: add a workaround to SBCL looping infinitely at startup on
2757 Linux kernels with apparently buggy implementations of personality().
2758 (thanks to Svein Ove Aas)
2759 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2760 (thanks to David Lichteblau)
2761 * bug fix: local bindings shadow global symbol macros for
2762 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2763 * optimization: non-open coded uses of numeric comparison operators
2764 (e.g. >) no longer cons when called with more than one parameter
2765 on platforms supporting dynamic-extent allocation.
2766 * enhancement: saving cores with foreign code loaded is now supported
2767 on MIPS/Linux in addition to the previously supported platforms.
2768 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2769 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2770 * bug fix: division by zero in sb-sprof when no samples were collected
2771 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2772 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2773 (thanks to Alexander Kjeldaas)
2774 * new feature: ignoring the return values of destructive functions
2775 like NREVERSE signals a compile-time style-warning.
2776 (thanks to Kevin Reid)
2777 * new feature: the alignment of alien structure fields can be
2778 explicitly specified. (thanks to Cyrus Harmon)
2779 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2780 and dump core on SIGQUIT
2782 ** incompatible change: threads do not inherit values of specials
2783 from their parents (see manual)
2784 ** bug fix: threads stacks belonging to dead threads are freed by the
2785 next exiting thread, no need to gc to collect thread stacks anymore
2786 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2787 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2788 ** bug fix: dynamic variable and thread start related gc lossage
2789 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2791 * fixed some bugs revealed by Paul Dietz' test suite:
2792 ** SUBTYPEP is slightly more accurate on heinously complicated
2793 CONS types where some of the members have uncertain (in the
2794 NIL, NIL sense) type relationships to each other.
2796 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2797 no longer purified unless :PURIFY T is explicitly specified.
2798 ** Non-purified cores are significantly smaller than before
2800 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2801 * new feature: timers based on Zach Beane's excellent timer package
2802 * added support for the following external formats: koi8-u,
2803 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2804 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2805 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2806 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2807 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2808 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2809 * incompatible change: a threaded SBCL will no longer revert to
2810 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2811 * bug fix: interrupts are disabled until startup is complete; no
2812 more sigsegvs when receiving a signal to soon
2813 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2815 * bug fix: add a workaround for the memory randomization features in
2816 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2817 workaround will only be in effect on systems with the proc filesystem
2819 * bug fix: printing objects of type HASH-TABLE signals a
2820 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2822 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2823 have been running for over 50 days. (reported by Gilbert Baumann)
2824 * bug fix: the logic for getting names of functions gets less
2825 confused when confronded with alternate-metaclass
2826 funcallable-instances. (reported by Cyrus Harmon)
2827 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2828 consistent, even on internal alternate-metaclass objects.
2829 * bug fix: flush closure information collected by physical
2830 environment analysis prepass before the main pass. (bug reported
2832 * bug fix: compiler pack phase does not modify a hashtable, which is
2833 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2834 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2835 may be expanded. (reported by Alexander <malishev> on c.l.l)
2836 * bug fix: no more style-warnings when compiling code using LAST
2837 under high-SPEED low-SPACE settings. (reported by David Wallin
2839 * fixed some incompatibilities between SBCL's MOP and the MOP
2841 ** the METAOBJECT class is now implemented;
2842 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2843 STANDARD-OBJECT, as required;
2844 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2845 now compatible (as required by VALIDATE-SUPERCLASS); there
2846 remains a consistency requirement over the presence or absence
2847 of the FUNCTION class in the superclass list of finalized
2848 classes; see the manual for more details;
2849 ** the :AROUND method for COMPUTE-SLOTS on
2850 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2851 requested slot ordering.
2853 ** bug fix: parent thread now can be gc'ed even with a live
2855 ** bug fix: binding a special with PROGV to no value is not
2856 the same as that symbol not having been bound (thanks to
2858 ** bug fix: binding specials is thread safe (thanks to
2860 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2861 and SB-SPROF do not die with 'no handler for signal XX in
2862 interrupt_handle_now(..)' anymore
2863 ** bug fix: WITH-TIMEOUT works with multiple running threads
2864 * fixed some bugs revealed by Paul Dietz' test suite:
2865 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2866 the :method-class keyword argument.
2868 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2869 * new port: the Solaris operating system on x86 processors is now
2870 mostly supported, though some rough edges in the environment
2871 remain. (thanks to Daisuke Homma)
2872 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2873 space for its heap. (thanks to Thiemo Seufer)
2874 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2875 closures. (thanks to Thiemo Seufer)
2876 * minor incompatible change: eof selects abort in the debugger.
2877 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2878 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2880 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2881 deprecated, and will go away in a future revision of SBCL.
2882 * minor incompatible change: GC-ON and GC-OFF are no longer
2883 implemented with a counter, it does not matter how many times gc
2884 is switched on or off
2885 * bug fix: discriminating functions for generic function classes
2886 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2887 make invalid assumptions about method precedence order. (reported
2889 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2890 platforms. (thanks to Thiemo Seufer)
2891 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2892 * bug fix: correct pathname printing with printer escaping is on.
2893 (thanks to Kevin Reid)
2894 * bug fix: complex VOP definitions in "user-space" no longer trigger
2895 package locks. (reported by Zach Beane)
2896 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2897 for funcallable-instance functions, and is no different from
2899 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2900 characters in the current readtable. (reported by Nicholas Neuss)
2901 * bug fix: SUBTYPEP on various CONS types returns more a more
2902 accurate acknowledgment of its certainty.
2903 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2904 lists in some cases. This partially fixes bug 384.
2905 * flush all standard streams before prompting in the REPL and the
2907 * bug fix: signal handling and triggering gc do not conflict
2908 directly anymore, in particular a high frequency sb-sprof does
2909 not prevent gc from running
2910 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2911 approximation for timezone and DST information between the
2912 universal time epoch and the smallest negative 32-bit time_t.
2913 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2914 year 1899 so long as the encoded time is non-negative.
2915 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2916 the correct answer for non-constant rotate amounts when performing
2917 an inline 32-bit rotation.
2919 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2920 there is only one thread in the session
2921 ** bug fix: memory leak for streams created in one thread and
2922 written to in another
2923 ** bug fix: lockup when compiled with gcc4
2924 ** bug fix: race that allows the gc to be triggered when gc is
2926 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2927 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2929 ** bug fix: finished threads are gc'ed properly
2930 * fixed some bugs revealed by Paul Dietz' test suite:
2931 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2932 has arguments with a different set of applicable methods from
2933 the orignal arguments.
2934 ** The type error thrown by MAP now has a correct expected-type
2936 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2937 name a compiled function.
2938 ** Three MISC tests where a large bignum was improperly coerced to
2939 a float that couldn't represent that bignum during type
2940 derivation were fixed.
2941 ** SUBTYPEP can now handle types involving the negation of a
2942 list-form FUNCTION type.
2943 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2944 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2945 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2947 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2948 * New feature: Experimental support for bivalent streams: streams
2949 opened with :element-type :default now allow character and binary
2950 (unsigned-byte 8) I/O
2951 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2952 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2954 * bug fix: no more highly sporadic "couldn't check whether ~S is
2955 readable" when reading a stream and an interrupt hits in the middle
2956 of a select system call
2957 * compiler better recognizes complex arrays (reported by Eduardo
2959 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2960 for variables on SBCL built with linkage-tables. (reported by Luis
2962 * various error reporting improvements.
2963 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2964 (Thanks to Thiemo Seufer)
2965 * bug fix: nested reader invokations work correctly
2966 * bug fix: it is possible to have simultaneous references to foreign
2967 code and foreign data with the same name.
2969 ** added x86-64 support
2970 ** incompatible change: the threading api now works with thread
2971 objects instead of thread ids
2972 ** bug fix: threads are protected from signals and interruption when
2973 starting up or going down
2974 ** bug fix: a race where an exiting thread could lose its stack to gc
2975 ** bug fix: don't halt on infinite error in threads if possible
2976 ** fixed numerous gc deadlocks introduced in the pthread merge
2977 ** bug fix: fixed thread safety issues in read and print
2978 ** bug fix: debugger doesn't hang on session lock if interrupted at
2979 an inappropriate moment
2980 ** bug fix: run-program is now thread safe(r)
2981 ** bug fix: inner with-recursive-lock no longer releases the mutex
2982 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2983 * fixed some bugs revealed by Paul Dietz' test suite:
2984 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2985 EXPECTED-TYPE slots filled.
2986 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2988 ** MAKE-CONDITION accepts classes as type-designators.
2989 ** COMPILE may never return NIL.
2990 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2991 range before calling Unix time functions
2993 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2994 * numerous signal handling fixes to increase stability
2995 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2996 * minor incompatible change: we now correctly canonize default
2997 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2998 as per the MOP, rather than the historical (INITARG INITFUNCTION
2999 INITFORM). (reported by Bruno Haible)
3000 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3001 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3002 for more information.
3003 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3004 pathname is a directory pathname.
3005 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3006 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3008 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3009 :METACLASS argument in addition to a class name. (reported by
3010 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3011 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3012 (reported by Bruno Haible; patch from Gerd Moellmann)
3013 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3015 * bug fix: more cleanups to the floating point exception handling on
3016 x86-64 (thanks to James Knight)
3017 * bug fix: the compiler does not try to constant fold calls of
3018 COERCE and BIT-* functions when they return freshly constructed
3019 objects. (reported by Nikodemus Siivola and Paul Dietz)
3020 * optimization: improved the MIPS versions of generic (in the
3021 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3022 * optimization: direct conversion of (unsigned-byte 32) to floats on
3023 the PowerPC platform.
3024 * optimization: structure instances with raw slots now use less
3025 memory, and probably show better memory locality. (thanks to
3027 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3028 are treated as requests for stack allocation on the x86-64,
3029 Alpha-32, PPC and SPARC platforms.
3030 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3031 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3032 (thanks to Tony Martinez)
3034 ** gcing a dead thread can no longer lead to lockups
3035 ** threads block signals until they are set up properly
3036 ** errno is no longer shared by threads
3037 ** interrupt-thread restores the eflags register on x86
3038 ** fixed some lockups due to gc/thread interaction
3039 * fixed some bugs revealed by Paul Dietz' test suite:
3040 ** invalid dotted lists no longer raise a read error when
3041 *READ-SUPPRESS* is T
3042 ** signal an error if a symbol that names a declaration is used
3043 as the name of a type, or vice versa
3044 ** allow using the (declare (typespec var*)) abbreviation for
3045 (declare (type typespec var*)) with all type specifiers
3046 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3047 ** always return NIL from PPRINT-POP when OBJECT is NIL
3048 ** don't signal errors when pretty-printing malformed LABELS,
3049 FLET or MACROLET forms
3050 ** declarations in a DOLIST body are also in scope for the
3052 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3054 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3057 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3058 * fixed cross-compiler leakages that prevented building a 32-bit
3059 target with a 64-bit host compiler.
3060 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3061 opened with :IF-EXISTS :OVERWRITE.
3062 * fixed bug 281: error for an invalid qualifier in a short-form method
3063 combination method is not signalled until the faulty method is called.
3064 * bug fix: iteration variable type inferrer failed to deal with open
3065 intervals. (reported by Alan Shields)
3066 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3067 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3068 or more runtime options were provided to the sbcl binary.
3069 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3070 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3071 * optimization: there's now a fast-path for fixnum arguments in the
3072 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3073 * optimization: the code generated on x86-64 is more compact thanks
3074 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3075 * bug fix: floating-point exception handling now partly works on
3076 x86-64. (Thanks to James Knight)
3077 * improvement to the MIPS backend from Thiemo Seufer: C-style
3078 64-bit long long arguments and return values to alien functions
3080 * fixed some bugs revealed by Paul Dietz' test suite:
3081 ** the type-error signalled from WARN has a filled-in DATUM slot.
3082 ** the type-error required when a stream is not associated with
3083 a file has the stream as its datum.
3084 ** type-errors on single-floats on x86-64 no longer have
3085 :INVALID-OBJECT as the datum
3086 ** the type-errors signalled for invalid function names now have
3087 a correct expected type
3088 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3089 for structures defined with a :TYPE. Documentation strings for
3090 typed structures are no longer immediately discarded
3091 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3092 broadcast streams and synonym streams. FILE-LENGTH now also works
3093 on broadcast streams.
3095 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3096 * incompatible change: the --noprogrammer option, deprecated since
3097 version 0.7.5, has been removed. Please use the equivalent
3098 --disable-debugger option instead.
3099 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3101 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3102 inoperational for a while now) has been completely removed.
3103 * null lexical environments are now printed as #<NULL-LEXENV>,
3104 significantly reducing the amount of clutter in typical backtraces.
3105 * documentation on weak pointers, finalization, and after GC hooks
3106 has been added to the manual.
3107 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3108 as other specialized array types, is much faster. SUBSEQ and
3109 COPY-SEQ on such arrays have also been sped up.
3110 * optimization: EQL is now more efficient when at least other argument
3111 is known to be of type (OR FIXNUM (NOT NUMBER)).
3112 * fixed bug: the runtime is now less vulnerable to changes in the
3113 size of the SBCL object on OS X, and virtual memory is reserved for
3114 all spaces that need to be at a fixed address.
3115 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3116 * fixed bug: finalizers and after GC hooks that cause consing are now
3118 * fixed bug: compiler error messages and summaries are now printed to
3119 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3120 * fixed inference of the upper bound of an iteration variable.
3121 (reported by Rajat Datta).
3122 * fixed bug 211e: calling local functions with duplicated constant
3123 keyword argument no longer causes a bogus style warning about an
3125 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3126 ftype declaration to be disregarded. (reported by Dave Roberts)
3127 * fixed bug 373: caused by erronous compilation of references to alien
3128 variables in the runtime on ppc/darwin.
3129 * fixed bug 376: CONJUGATE type deriver.
3130 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3131 (reported by Baughn on #lisp)
3132 * a cross-compiler bug on non-x86 platforms has been identified and
3133 fixed. (thanks to Bruno Haible)
3134 * improvements to the MIPS runtime code for increased stability.
3135 (thanks to Thiemo Seufer)
3136 * increased the maximimum compact environment size to allow
3137 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3138 * partial workaround for bug 135: don't name the function we're
3139 calling for hairy cases of EVAL, so as not to accumulate one environment
3140 entry per call to EVAL. (reported by Kevin Reid)
3141 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3142 * optimization: type testing for non-vector arrays should be faster.
3143 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3145 * bug fix: setting 31st element of a bit vector to zero did not work
3147 * bug fix: redefining a class definition which failed due to a
3148 previous accessor / function clash now works (but see BUGS entry
3149 #380 for more problems in this area). (thanks to Zach Beane)
3150 * the long form of DEFINE-METHOD-COMBINATION disables method group
3151 checking when given a single method group with pattern *. (thanks
3153 * on x86 compiler supports stack allocation of results of simple
3154 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3155 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3156 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3157 * fixed some bugs related to Unicode integration:
3158 ** the restarts for recovering from input and output encoding
3159 errors only appear when there is in fact such an error to
3161 * fixed some bugs revealed by Paul Dietz' test suite:
3162 ** MISC.549 and similar: late transformation of unsafe type
3163 assertions into derived types caused unexpected code
3165 ** SCALE-FLOAT type deriver is less wrong.
3166 ** type derivers for EXP, LOG and similar functions compute result
3167 types for complex arguments better.
3168 ** (MISC.563) CONJUGATE type deriver works for very restricted
3170 ** out-of-line type testers for character strings are available.
3171 ** EQUAL compiler transform understands specialness of objects
3173 ** accessing double-floats stored on the stack now works on x86-64.
3174 ** debugger internals could sometimes create invalid lispobjs,
3175 resulting in GC crashes.
3176 ** MISC.548: type check weakening can convert required type into
3178 ** initialization forms for bindings are not in scope of free special
3181 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3182 * incompatible change: thread support for non-NPTL systems has
3183 been removed - locking is buggy and unreliable. A threaded
3184 SBCL build will now warn at startup and refuse to create
3185 new threads, unless futex support is detected in the kernel
3186 * incompatible change: the top level REPL now has only an ABORT
3187 restart associated with it, not TOPLEVEL and ABORT as it used to.
3188 TOP and TOPLEVEL are now available as debugger commands for
3189 returning to the top level.
3190 * incompatible change: forms evaluated in the REPL now use the
3191 global optimization policy.
3192 * incompatible change: user- and system-initialization files are
3193 no longer processed with LOAD, but by READ and EVAL; hence the
3194 global optimization policy, startup package, readtable, etc,
3196 * The .fasl file format number has been incremented because of
3197 various incompatible changes.
3198 * internal entry point details and argument counts no longer appear
3199 in backtraces unless explicitly requested by setting
3200 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3201 * built-in and standard functions no longer have names like "top
3202 level local call to FOO".
3203 * fixed bug 32: functions defined in non-null lexical environments
3204 now have more legible printed representation
3205 * fixed bug 33: functions defined in non-null lexical environemnts
3206 are now more amenable to inspection by INSPECT.
3207 * workaround for bug 354: XEPs no longer appear in backtraces unless
3208 explicitly requested.
3209 * fixed bug: receiving the signal which results from attempting to
3210 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3211 SIGBUS on other *BSDs) on architectures where the C stack is also
3212 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3213 to debugger confusion or wild instability. (reported by Cheuksan
3215 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3216 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3217 (reported by Lutz Euler)
3218 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3219 compiled code. (reported by Paul Dietz)
3220 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3221 specialized parameter to a method to something that is not TYPEP
3222 the specializer is now possible.
3223 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3224 face of package deletion.
3225 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3226 pathname. (reported by David Tolpin on c.l.l)
3227 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3228 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3229 STRING-STREAM and FILE-STREAM, respectively.
3230 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3231 than previously; in addition, its test suite is now run on build.
3232 (thanks to Luke Gorrie)
3233 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3234 * optimization: added a immediate representation for single-floats
3236 * fixed some bugs revealed by Paul Dietz' test suite:
3237 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3238 ** attempting to create a package with a colliding nickname causes
3239 correctable errors to be signalled.
3240 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3241 ** several x86-64 backend bugs related to sign-extension of immediate
3244 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3245 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3246 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3248 * fixed loading of multiply forward-referenced layouts.
3249 (thanks to Cheuksan Wang)
3250 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3251 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3252 (see COMPILE-FILE documentation for details of :PRINT option)
3253 * fixed bugs 19 and 317: fixed-format floating point printing is
3254 more accurate. This also fixes a bug reported by Adam Warner
3255 related to the ~@F format directive.
3256 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3258 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3259 dispatch table if the from-char is a dispatch macro character.
3260 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3261 by the wordsize no longer ignore the last word. (reported by Lutz
3263 * fixed bug in type checking of dynamic-extent variables. (reported
3265 * optimization: sequence traversal functions use their freedom to
3266 coerce function designators to functions.
3267 * optimization: code with many calls to CLOS methods specialized on
3268 CLOS classes has had redundant type checks removed.
3269 * optimization: added declarations to speed up operations that access
3270 the internal character database (for example STRING-UPCASE)
3271 * optimization: comparison operations between floats and sufficiently small
3272 fixnums no longer create extra rationals
3273 * fixed some bugs related to Unicode integration:
3274 ** portions of multibyte characters at the end of buffers for
3275 character-based file input are correctly transferred to the
3276 start of the buffer at the next read.
3277 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3278 passing it through to OPEN.
3279 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3280 argument given to internal calls to OPEN.
3281 ** the built-in comment readers (introduced by character sequences
3282 ";" and "#|") are more forgiving to encoding errors; they will
3283 STYLE-WARN and then attempt to resync the stream at a character
3284 boundary. (thanks to Teemu Kalvas)
3285 * fixed some bugs in the x86-64 port:
3286 ** Negative short int return values from c-calls are sign-extended
3288 ** The stack is aligned to 16-bytes for c-calls, as required by
3289 the ABI. (thanks to Cheuksan Wang)
3290 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3291 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3292 for enums. (thanks to Vincent Arkesteijn)
3293 ** Multiple small optimizations and bugfixes for floating point
3295 * fixed some bugs revealed by Paul Dietz' test suite:
3296 ** Space, Tab, Linefeed, Return and Page have the invalid
3297 secondary constituent character trait.
3298 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3300 ** WITH-INPUT-FROM-STRING should only update the index place on
3302 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3303 works more reliably.
3304 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3305 with one-dimensional arrays with fill pointers.
3306 ** TYPE-OF failed on a complex with an integer realpart and a
3308 ** compiler failure during type inference for the code of form
3309 (IF (EQL X (THE ...)) ...) (MISC.535).
3311 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3312 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3313 platform. The port supports 61-bit fixnums, large memory spaces
3314 and reloading shared object files.
3315 * enhancement: saving cores with foreign code loaded is now
3316 supported on ppc/Darwin in addition to the previously supported
3318 * enhancement: the statistical profiler now walks deeper into the
3319 call stack for more meaningful call-graphs and accrued time
3320 reports (x86/x86-64 only). It also now reports time spent in
3322 * enhancement: it is now possible to trace most individual methods
3323 of a generic function in addition to tracing the generic function
3325 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3327 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3328 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3329 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3330 produces an error. (thanks to Vincent Arkesteijn)
3331 * bug fix: NAMESTRING on pathnames with :WILD components in their
3332 directories works correctly. (thanks to Artem V. Andreev)
3333 * fixed bug 125: compiler preserves identity of closures. (reported
3335 * bug fixed: functions with &REST arguments sometimes failed with
3336 "Undefined function" when compiled with (DEBUG 3). (reported by
3338 * bug fix: overflow during compiling of setting element of a bit
3339 vector with constant index and value. (reported by Timmy Douglas)
3340 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3341 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3342 * on x86 compiler partially supports stack allocation of dynamic-extent
3344 * GO and RETURN-FROM do not check the extent of their exit points
3345 when compiled with SAFETY 0.
3346 * fixed some bugs related to Unicode integration:
3347 ** encoding and decoding errors are now much more robustly
3348 handled; it should now be possible to recover even from invalid
3349 input or output to the terminal. (thanks to Teemu Kalvas)
3350 ** provided a first cut at implementing STRING-TO-OCTETS and
3351 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3352 ** altered the SB-MD5 contributed module slightly, changing the
3353 interface just enough for it to be supportable for builds where
3354 lisp characters are not eight bits.
3355 * fixed some bugs revealed by Paul Dietz' test suite:
3356 ** the FORMATTER-generated functions for ~V[ conditionals require
3357 the correct number of arguments.
3358 ** READ-FROM-STRING returns the mandated second value when applied
3359 to displaced strings.
3360 ** the #\Rubout and #\Backspace characters are treated as invalid
3361 constituent characters by the tokenizer.
3363 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3364 * new feature: reloading changed shared object files with
3365 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3366 * new feature: references to foreign variables and functions
3367 can now be compiled and loaded before the corresponding shared
3368 object file is loaded, as long as the foreign definitions are
3369 available at runtime.
3370 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3371 supported. (thanks to Dan Debertin)
3372 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3373 just keywords. (thanks to Vincent Arkesteijn)
3374 * fixed bug #331: structure-class instances corresponding to
3375 DEFSTRUCT forms are now created eagerly.
3376 * fixed bug #345: backtraces from calls to undefined functions work
3377 on x86 as well. Related bug #61 is now also partially fixed on x86
3378 (backtraces from throws to unknown catch tags.)
3379 * bug fix: lambda-list parsing is now stricter vrt. order and number
3380 of lambda-list keywords.
3381 * bug fix: as specified by AMOP, an error is signalled if a
3382 class-option appears multiple times in a DEFCLASS form. (reported
3384 * bug fix: RANDOM can be compiled when the compiler derives the type
3385 of its numeric argument as a disjoint set of small integers.
3386 (reported by Paul Dietz)
3387 * bug fix: starting a core saved with shared objects loaded when
3388 those objects are not available no longer causes threaded SBCL to
3389 hang. (reported by Sean Ross)
3390 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3392 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3393 argument, which must always be NIL. (reported by Kalle Niemitalo)
3394 * bug fix: printing 1.0d+23 no longer results in an error.
3395 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3396 * bug fix: structure slot setters preserve evaluation order. (thanks
3398 * fixed some bugs related to Unicode integration:
3399 ** RUN-PROGRAM can allow its child to take input from a Lisp
3400 stream. (reported by Stefan Scholl)
3401 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3402 locales. (reported by Ken Causey)
3403 * fixed some bugs revealed by Paul Dietz' test suite:
3404 ** INCF, DECF and REMF evaluate their place form as specified in
3406 ** FORMATTER expands ~{ ~} iteration directives with V or #
3407 parameters correctly.
3408 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3409 consequent uses no arguments correctly.
3410 ** the system has a partial understanding of the (COMPLEX RATIO)
3412 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3415 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3416 * new feature: a build-time option (controlled by the :SB-UNICODE
3417 keyword feature, enabled by default) for building the system with
3418 support for the entire 21-bit character space defined by the
3420 * new feature: the system now has rudimentary external-format
3421 support; the primary user-visible change at this time is that
3422 characters with the high bit set (such as lower-case-e-acute) will
3423 print correctly to a terminal in a UTF-8 environment.
3424 * minor incompatible change: BASE-CHAR no longer names a class;
3425 however, CHARACTER continues to do so, as required by ANSI.
3426 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3427 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3428 has been moved to the SB-EXT package (temporarily re-exported from
3430 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3431 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3433 * fixed bug #351: better error-handlind and reporting for malformed
3435 * fixed bug #350: bignum-printing is now more memory-efficient,
3436 allowing printing of very large bignums, eg. (expt 2 10000000).
3437 (reported by Bruno Haible)
3438 * fixed bug #302: better primitive-type selection for intersection
3440 * fixed bug #308: non-graphic characters now all have names, as
3441 required. (reported by Bruno Haible)
3442 * bug fix: redefining a class with different superclasses now correctly
3443 removes it from the direct-subclasses of its previous superclasses.
3444 (reported by David Morse)
3445 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3446 new value now works. (reported by Bruno Haible)
3447 * bug fix: correct canonicalization of multiple non-standard slot
3448 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3449 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3450 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3451 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3452 now exists, an signals an error.
3453 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3454 during macroexpansion for non-iteration variables as well. (reported
3455 by Bruno Haible for CMUCL)
3456 * bug fix: Cyclic structures and unprintable objects in compiler
3457 messages no longer cause errors. (reported by Bruno Haible)
3458 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3459 and READ-FROM-STRING all now return a primary value of NIL if
3460 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3461 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3462 (reported by Bruno Haible for CMUCL)
3463 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3464 do not designate a condition. (reported by Bruno Haible for
3466 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3467 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3468 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3469 permitting resolution in favour of any of the conflicting symbols.
3470 (reported by Bruno Haible for CMUCL)
3471 * bug fix: EQUAL compiler optimizations is less aggressive on
3472 strings which can potentially compare true despite having distinct
3473 specialized array element types.
3474 * bug fix: unit enumerations can be defined without dividing by
3475 zero. (thanks to Vincent Arkesteijn)
3476 * FORMAT compile-time argument count checking has been enhanced.
3477 (report from Bruno Haible for CMUCL)
3478 * a partial workaround for the bug 262: the compiler does not try to
3479 inline-expand a local function doing RETURN-FROM from a deleted
3480 BLOCK. (thanks to Peter Denno for the bug report and to David
3481 Wragg for the simple test case)
3482 * fixed some bugs revealed by Paul Dietz' test suite:
3483 ** RENAME-PACKAGE allows all package designators as new package
3485 ** constraint propagation and lambda variable substitution are
3486 more cautious in dealing with partially deleted code.
3487 ** compiler sometimes lost reoptimization passes.
3488 ** CERROR, given a condition as condition designator, passes its
3489 remaining arguments to the continue format control without
3491 ** Case-altering FORMAT directives work correctly on non-ASCII
3493 ** The REAL type specifier handles bounds outside the floating
3494 point ranges without signalling FLOATING-POINT-OVERFLOW.
3495 ** Functions with IR1-transformations can create intercomponent
3496 references to global functions.
3497 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3499 ** FORMAT ~R treats a nil value for its first parameter correctly.
3501 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3502 * enhancement: saving cores with foreign code loaded is now
3503 supported on x86/NetBSD and sparc/Linux in addition to the previously
3504 supported platforms.
3505 * bug fix: on some platforms repeated installations caused multiple
3506 copies of HTML documentation to be installed -- should not happen
3507 any more. (reported by Stefan Scholl)
3508 * bug fix: parsing self-recursive alien record types multiple times
3509 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3510 original patch by Helmut Eller for CMUCL)
3511 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3512 (thanks to Richard Kreuter)
3513 * bug fix: defining classes whose accessors are methods on existing
3514 generic functions in other (locked) packages no longer signals
3515 bogus package lock violations. (reported by François-René Rideau)
3516 * bug fix: special variables as DEFMETHOD parameters no longer have
3517 associated bogus type declarations. (reported by David Wragg and
3519 * bug fix: read-write consistency on streams of element-type
3520 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3521 * bug fix: redefiniton of the only method of a generic function with
3522 no DEFGENERIC no longer emits a full WARNING. In addition,
3523 redefinition of generic functions with no DEFGENERIC to an
3524 incompatible lambda list now signals an error. (thanks to Zach
3526 * bug fix: DEFGENERIC now works even when there's a function of the
3527 same name in an enclosing lexical environment. (thanks to Zach
3529 * fixed compiler failure, caused by instrumenting code during
3530 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3531 * optimization: added loop analysis and improved register allocation
3532 * fixed some bugs revealed by Paul Dietz' test suite:
3533 ** POSITION on displaced vectors with non-zero displacement
3534 returns the right answer.
3535 ** (SIMPLE-STRING) is a valid type specifier for sequence
3537 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3539 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3540 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3542 ** The justification version of the FORMAT ~< directive treats
3543 non-zero minpad parameter correctly.
3545 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3546 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3547 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3548 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3549 the supported interface.
3550 * new feature: Single-stepping of code compiled with DEBUG 2 or
3551 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3552 * new feature: saving cores with foreign code loaded is now
3553 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3554 Timothy Moore's work for CMUCL)
3555 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3556 parameters to * instead of NIL if no initform is supplied.
3557 (reported by Johan Bockgaard)
3558 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3559 correctly when FUNCALL appears as the car of the form. Note:
3560 despite this FUNCALL forms are not currently subject to
3561 compiler-macro expansion. (port of Raymond Toy's fix for the
3562 same from CMUCL, reported by Johan Bockgaard)
3563 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3564 (thanks for Teemu Kalvas)
3565 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3566 case instead of terminating the iteration (thanks for Julian
3567 Squires, Sean Champ and Raymond Toy)
3568 * bug fix: incorrect expansion of defgeneric that caused a style
3569 warning. (thanks for Zach Beane)
3570 * bug fix: slot accessor effective method computation works properly
3571 for classes with multiple non-standard applicable methods on
3572 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3573 * on x86 compiler supports stack allocation of results of LIST and
3574 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3575 CMUCL implementation by Gerd Moellmann)
3576 * fixed some bugs revealed by Paul Dietz' test suite:
3577 ** FORMAT strings with both the ~<~:;~> form of the justification
3578 directive and pretty-printing directives cause an error.
3580 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3581 * incompatible change: the internal functions
3582 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3583 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3584 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3585 instead of the old functions.
3586 * new feature: on platforms where "dladdr" is available foreign
3587 function names now appear in backtraces. (based on Helmut Eller's
3589 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3590 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3592 * documentation: ASDF manual is now distributed with SBCL.
3593 * bug fix: SBCL can now load its contributed modules with REQUIRE
3594 even if the system-provided entries have been removed from
3595 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3597 * bug fix: backtraces involving undefined functions or assembly
3598 routines are more informative. (thanks to Brian Downing)
3599 * bug fix: mutually referent alien structures now work correctly.
3600 (reported by Rick Taube)
3601 * bug fix: structures defined by WITH-ALIEN can be referred to
3602 within other definitions in the same WITH-ALIEN.
3603 * bug fix: division operators (MOD, TRUNCATE and the like) with
3604 constant zero divisors and integer dividends no longer generate
3606 * bug fix: provide default methods for INPUT-STREAM-P and
3607 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3608 * bug fix: improve the detection and resolution of MOP metacycles
3609 (where effective method computation depends on the generic function
3610 having its effective method computed). (reported by Bruno Haible)
3611 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3612 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3613 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3614 * bug fix: pathnames with relative directory components can be
3615 represented relative to default pathnames.
3616 * optimization: in taking the GCD of bignums, reduce the two bignums
3617 to approximately the same size (using Euclid's algorithm) before
3618 applying the more sophisticated binary GCD. (thanks to Juho
3620 * optimization: COUNT on bitvectors now operates word-at-a-time.
3621 * optimization: ASH with a positive, but not necessarily constant,
3622 (leftwards) shift, when in a modular context, is compiled to a
3624 * fixed some bugs revealed by Paul Dietz' test suite:
3625 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3626 if the corresponding argument is NIL.
3627 ** FORMAT directives accepting a minpad parameter treat negative
3629 ** literal commas as character parameters to FORMAT directives are
3631 ** literal spaces directly after ~<Newline> directives within a
3632 format-logical-block (~:< ~@:>) do not induce :FILL-style
3633 conditional newlines.
3634 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3635 as specified: it no longer includes conditional newlines).
3636 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3638 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3639 :PER-LINE-PREFIX argument does not evaluate to a string.
3641 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3642 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3643 the manual for details; for now, package locks can be disabled by
3644 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3645 if no major problems are found then it is likely that they will be
3646 compiled in unconditionally.
3647 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3648 unsupported operators on all platforms. To load a shared library
3649 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3650 object file, link it into a shared library outside of SBCL and
3651 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3653 * bug workaround: ROOM T and the GC were not working together
3654 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3655 reporting facility aren't preserved. That reporting has been
3656 disabled, so now until and unless someone figures out how to make it
3657 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3658 * minor incompatible change: as threatened around sbcl-0.8.0, the
3659 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3660 The symbols are also exported from SB-PCL for backwards
3661 compatibility, but more so than before SB-PCL should be treated as
3662 an implementation-internal package.
3663 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3665 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3666 It is known as of this release not to work on the Alpha, however.
3667 * fixed bug #167: errors signalled due to illegal syntax in method
3668 bodies are now more legible.
3669 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3670 designators and can hence be used with TYPEP.
3671 * fixed bug #333: CHECK-TYPE now ensures that the type error
3672 signalled, if any, has the right object to be accessed by
3673 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3674 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3675 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3677 * fixed bug #334: programmatic addition of slots using specialized
3678 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3679 and :ALLOCATION :CLASS slots.
3680 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3681 float exponents. (rereported by Peter Seibel)
3682 * fixed a bug: #\Space (and other whitespace characters) are no
3683 longer considered to be macro characters in standard syntax by
3684 GET-MACRO-CHARACTER.
3685 * fixed bug: initialization of condition class metaobjects no longer
3686 causes an instance of the condition to be created. (reported by
3688 * fixed bug: it is now possible to have slots such that
3689 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3690 description is neither :INSTANCE nor :CLASS.
3691 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3692 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3693 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3694 non-standard SLOT-DEFINITION-ALLOCATION values.
3695 * fixed bugs: various race conditions handling exiting threads.
3696 CL-PPCRE's thread torture test now passes.
3697 * fixed arguably-a-bug: GC time proportional to number of threads in
3698 system even when most of them are idle
3699 * optimization: improved performance of BIT and SBIT on bit-vectors.
3700 * .fasl file incompatibility: The fasl file version number has
3701 been incremented because of changes associated with package locks.
3703 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3704 * minor incompatible change: the system no longer provides
3705 optimization hints (conditions which are TYPEP
3706 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3707 mode; these hints are still emitted when higher SPEED optimization
3709 * new contrib module: a sampling profiler (profiling by statistical
3710 sampling, rather than by instrumenting functions) is available as
3711 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3712 * the behaviour of the standard function ED is now customizeable by
3713 third parties through a hook variable: see ED's documentation
3714 string for information on the protocol.
3715 * the compiler no longer emits efficiency notes for (FUNCALL X)
3716 when the type of X is uncertain under default optimization
3718 * fixed bug 276: mutating a binding of a specialized parameter to a
3719 method to something that is not TYPEP the specializer is now
3721 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3722 exhibit the required behaviour on the x86 platform. (thanks to
3723 Peter van Eynde, Eric Marsden and Bruno Haible)
3724 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3725 even for difficult arguments. (reported by Peter Graves)
3726 * fixed bug 141a: the backquote printer now descends quoted
3728 * fixed another bug in backquote printing: no more destructive
3729 modification of the form's list structure. (reported by Brian
3731 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3732 move between its address being taken and the call to
3733 interrupt_thread, fixing a crashing race condition.
3734 * the SB-POSIX contrib implementation has been adjusted so that it
3735 no longer exhibits ridiculously poor performance when constructing
3736 instances corresponding to C structs.
3738 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3739 * minor incompatible change: the sb-grovel contrib now treats C
3740 structures as alien (in the sense of SB-ALIEN) objects rather than
3741 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3742 has implications for memory management of client code
3743 (sb-grovel-returned objects must now be manually managed) and for
3744 type safety (alien objects now have full types).
3745 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3746 used to control emission of compiler diagnostics, rather than the
3747 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3748 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3749 quality should be considered deprecated.
3750 * install.sh now installs the user manual as well
3751 * (not quite a new documentable feature, but worth considering in
3752 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3753 beginnings of a semantically meaningful condition hierarchy is
3754 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3756 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3757 designator as the defaults argument.
3758 * fixed bug: Displaced arrays whose displaced-to array has become
3759 too small now cause ARRAY-DIMENSION to signal an error, providing
3760 for safer bounds-checking. (reported by Bruno Haible)
3761 * fixed bug: DEFCLASS slot definitions with identical :READER and
3762 :WRITER names now signal a reasonable error. (reported by Thomas
3764 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3766 * fixed bug: Invalid slot specification errors now print correctly.
3767 (thanks to Zach Beane)
3768 * fixed bug 320: Shared to local slot value transfers in class
3769 redefinitions now happen corrently from superclasses as
3770 well. (reported by Bruno Haible)
3771 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3773 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3774 improper lists correctly. (reported by Bruno Haible)
3775 * fixed bug 313: source-transform for <fun-name> was erroneously
3776 applied to a call of a value of a variable with name <fun-name>.
3777 (reported by Antonio Menezes Leitao)
3778 * fixed bug 307: The obsolete instance protocol ensures that
3779 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3780 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3781 remove dead unknown-values globs from the middle of the stack.
3782 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3783 easier to resume long computations after using *BREAK-ON-SIGNALS*
3784 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3785 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3786 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3787 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3788 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3789 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3791 * fixed a (fairly theoretical) bug in string printing: if
3792 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3793 does not have array-element-type equal to the most general string
3795 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3796 function name. (thanks to Nikodemus Siivola)
3797 * fixed bug: compile-time format string checker failed on
3798 non-closed ~{. (reported by Thomas F Burdick)
3799 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3800 don't warn on legal loop code involving more than one aggregate
3801 boolean. (thanks to Nikodemus Siivola)
3802 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3803 in keyword position to MAKE-PACKAGE was not being reported as
3805 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3806 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3808 * fixed bugs 280 and 312: the checking for multiple definitions in a
3809 file is less likely to become confused by uses of inline
3811 * fixed bug: the #S reader macro performs the keyword coercion
3812 specified for slot names. (reported by Kalle Niemitalo)
3813 * fixed bug: lambda lists may contain symbols whose names start with
3814 & but are not lambda-list-keywords; their occurrence triggers a
3816 * fixed bug 321: define-method-combination argument lambda lists do
3817 not cause invalid code to be generated when &optional or &aux
3818 variables have default values. (reported by Bruno Haible)
3819 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3820 have CLOS classes; this appears also to have fixed reported
3821 instability in stack exhaustion detection.
3822 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3823 MUFFLE-WARNING when no associated restart is present is now
3825 * optimization: rearranged the expansion of various defining macros
3826 so that each expands into only one top-level form in a
3827 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3829 * optimization: used a previously little-used slot in symbols to
3830 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3832 * fixed some bugs revealed by Paul Dietz' test suite:
3833 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3835 ** Fixed an optimization bug related to inheritance of initforms
3836 from local to shared slots.
3837 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3838 ** CAST optimizer forgot to flush argument derived type.
3839 ** print/read consistency on floats is now orders of magnitude
3840 more likely. (thanks also to Bruno Haible for a similar report
3842 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3843 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3844 for objects of type REAL. Make it so.
3845 ** SXHASH is specified (infelicitously) to respect similarity,
3846 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3847 it so. (thanks to Markus Ziegler)
3848 ** on the Alpha, the compiler succeeds in compiling functions
3849 returning a known number of arguments greater than 63.
3850 ** fixed handling of invalid NIL arguments in keyword position
3852 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3854 ** provided a readably-printable representation for RANDOM-STATE
3856 ** ensured that pathnames, where they have a namestring, always
3857 print using #P"..." syntax.
3859 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3860 * Support for the forthcoming 2.0 version of the NetBSD kernel
3861 running on x86 hardware has been added. (thanks to Perry
3862 E. Metzger most immediately, and others for their past work)
3863 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3864 current release version; SBCL's OpenBSD support had been broken
3865 since about the time of OpenBSD's switch to ELF binary format.)
3866 * [placeholder for DX summary]
3867 ** user code with &REST lists declared dynamic-extent, under high
3868 speed or space and low safety and debug optimization policy.
3869 * The manual has been converted to Texinfo format and the debugger
3870 chapter from the cmucl manual has been added.
3871 * A facility has been added to extract documentation strings from
3872 sbcl and store them as Texinfo-formatted snippets for inclusion in
3873 the manual (via Texinfo's @include directive)
3874 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3875 the test case to Dave Roberts)
3876 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3877 pointers. (reported by Sean Ross)
3878 * bug fix: PROFILE output is printed nicely even for large numerical
3879 values. (thanks to Zach Beane)
3880 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3881 greater than 32 handle EOF correctly.
3882 * bug fix: on X86 an immediate argument of the IMUL instruction is
3883 correctly printed in disassembly. (thanks to Lutz Euler)
3884 * bug fix: class slots in redefined classes preserve their old
3885 values. (thanks to Bruno Haible and Nikodemus Siivola)
3886 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3887 succeeds. (reported by Marco Baringer)
3888 * fixed some bugs revealed by Paul Dietz' test suite:
3889 ** READ-SEQUENCE now works on ECHO-STREAMs.
3890 ** RATIONALIZE works more according to its specification. (thanks
3893 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3894 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3895 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3896 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3897 should matter to you only if you rebind the printer control
3898 variables and then find you want different bindings in the
3899 debugger than in the ordinary execution of your program.)
3900 * The runtime build system has been tweaked to support building
3901 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3902 assembler and linker. (thanks to Nikodemus Siivola)
3903 * Unbound, undefined, undeclared variables now trigger full
3904 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3905 more often programmer error than deliberate exploitation of undefined
3907 * optimization: the hash algorithm for strings has changed to one
3908 that is less vulnerable to spurious collisions. (thanks to Juho
3910 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3911 needless bounds checking. (thanks to Juho Snellman)
3912 * optimization: implemented multiplication as a modular
3913 (UNSIGNED-BYTE 32) operation on the PPC backend.
3914 * fixed some bugs revealed by Paul Dietz' test suite:
3915 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3917 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3918 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3919 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3921 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3923 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3925 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3926 their output stream on EOF from read.
3927 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3928 have been read to end-of-file.
3929 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3931 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3932 description of determination of which consecutive characters
3934 ** Printing the "Space" character with escaping on now yields "#\\ ",
3935 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3936 ** Reading floating-point numbers with *READ-BASE* set to a number
3937 less than 10 works correctly.
3938 ** Reading floating-point numbers with *READ-BASE* set to a number
3939 more than 10 works correctly.
3940 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3941 the readtable currently in effect.
3943 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3944 * minor incompatible change: parsing of namestrings on a physical
3945 (Unix) host has changed; numbers after the final #\. in a
3946 namestring are no longer interpreted as a version field. This is
3947 intented to be largely invisible to the user, except that the
3948 meaning of the namestring "*.*.*" has changed: it now refers to a
3949 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3950 should usually be replaced by
3951 (make-pathname :name :wild :type :wild :version :wild)
3952 with the added benefit that this is more likely to be portable.
3953 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3954 option to OPEN now signals an error if the file being opened
3955 exists; this may have an impact on existing code.
3956 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3957 signals received, on the PowerPC platforms (both Linux and
3958 Darwin). (thanks to Pierre Mai for pointing out the location of
3960 * several fixes on OS X: The system now builds and runs cleanly on
3961 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3962 (thanks to Brian Mastenbrook)
3963 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3964 second-resolution: integer multiples of 1/3600 between -24 and 24.
3965 (thanks to Vincent Arkesteijn)
3966 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3967 type when called with 1 argument; PEEK-CHAR checked type of
3968 PEEK-TYPE only after having read first character from a
3969 stream. (reported by Peter Graves)
3970 * bug fix: the garbage collector now has much better locality
3971 behaviour, and in particular no longer treats all memory as being
3972 exhausted when many small objects point to each other in a deeply
3974 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3975 recognized as being TYPEP their class.
3976 * bug fix: the PUSHNEW documentation string has been corrected.
3977 (thanks to Vincent Arkesteijn)
3978 * bug fix: defaulting of the value for the last of an atypically
3979 large number of multiple values being bound was not being
3980 performed correctly on the Alpha or PPC platforms
3981 * optimization: implemented multiplication as a modular
3982 (UNSIGNED-BYTE 32) operation on the x86 backend.
3983 * optimization: SEARCH on simple-base-strings can now be open-coded.
3984 (see also contrib/compiler-extras.lisp for inspiration for
3985 teaching the compiler about the Boyer-Moore algorithm).
3986 * value, returned by MAX (and MIN) called with several EQUALP, but
3987 not EQL, arguments now does not depend on compiler settings.
3988 * fixed some bugs revealed by Paul Dietz' test suite:
3989 ** in stack analysis liveness information is propagated from
3990 non-local entry points.
3991 ** pathwise CAST removing failed when the CAST node did not start
3993 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3994 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3996 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3997 host is already defined.
3998 ** RENAME-FILE works on streams instead of signalling an internal
4000 ** PEEK-CHAR uses the current readtable when determining whether
4001 or not a character is whitespace.
4002 ** MERGE-PATHNAMES handles the case when the pathname does not
4003 specify a name while the default-pathname specifies a version.
4004 ** Pathnames now stand a better chance of respecting print/read
4006 ** Attempting to use standardized file system operators with a
4007 pathname with invalid :DIRECTORY components signals a
4009 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4011 ** DIRECTORY on logical pathnames is more correct.
4012 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4013 signal a TYPE-ERROR if their argument is not a stream.
4014 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4015 designator argument does not designate a stream.
4016 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4017 examining the synonym.
4018 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4020 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4021 element-type larger than ([UN]SIGNED-BYTE 32).
4023 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4024 * When built with the :SB-FUTEX feature, threaded builds now take
4025 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4026 for faster/more reliable mutex and condition variable support.
4027 * Incompatible change (but one you probably shouldn't have been using
4028 anyway): the interface and code for arbitrating between multiple
4029 threads in the same user session has been redesigned.
4030 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4031 error when called without an explicit environment argument.
4032 (thanks to Nikodemus Siivola)
4033 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4034 confused about their position. (thanks to Adam Warner and Gerd
4036 * bug fix: Pretty printing backquoted forms with unquotations in the
4037 argument list position of various code constructs such as LAMBDA
4038 now works correctly. (reported by Paul Dietz)
4039 * bug fix: Pretty printing unquotations no longer loses all
4040 stream position information.
4041 * optimization: performance of string output streams is now less
4042 poor for multiple small sequence writes.
4043 * optimization: performance of CSUBTYPEP in the presence of complex
4044 expressions involving CONS and NOT many times has been improved.
4045 (reported by Paul Dietz)
4046 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4048 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4049 streams for the REPL, for the debugger, and so on. (thanks to
4051 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4052 * fixed some bugs revealed by Paul Dietz' test suite:
4053 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4054 is ignored if it is too small, rather than propagating through
4055 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4056 ** extremely complex negations of CONS types were not being
4057 sufficiently canonicalized, leading to inconsistencies in
4059 ** VALUES tranformer lost derived type.
4061 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4062 * fixed a bootstrapping bug: the build process no longer assumes
4063 that the various BOOLE-related constants have the same value in
4064 host and target lisps. (noted by Paul Dietz' test suite on an
4065 SBCL binary built from CLISP)
4066 * The system can now be dynamically linked on the MIPS platform,
4067 which enables dynamic loading of foreign code from Lisp. (thanks
4068 to Ralf Baechle for discussions on the MIPS ABI)
4069 * The system now records debugging information for its own source
4070 files in a filesystem-position-independent manner, relative to
4071 the "SYS" logical host.
4072 * fixed a compiler bug: MV-LET convertion did not check references
4073 to the "max args" entry point. (reported by Brian Downing)
4074 * tweaked disassembly notes to be less confident about proclaiming
4075 some instruction as an LRA. (thanks to Brian Downing)
4076 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4077 now each have their own history, command character, and other
4078 characteristics. (thanks to David Lichteblau)
4079 * fixed some bugs revealed by Paul Dietz' test suite:
4080 ** compiler failure in compiling LOGAND expressions including a
4082 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4083 shift greater than 32.
4084 ** FLUSH-DEST did not mark blocks for type check regeneration.
4085 ** HANDLER-CASE failed to accept declarations in handler clauses
4086 in some circumstances.
4088 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4089 * New code in contrib/sb-introspect (still probably not entirely
4090 stable yet) provides some support for smart Lisp development
4091 environments like SLIME.
4092 * The conditions signalled for errors occurring when loading .fasl
4093 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4094 in a way which should help ASDF recover gracefully.
4095 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4096 stuff has been cleaned up. If you code contrib/ stuff, this might
4097 affect you, and you can look at contrib/README, contrib/STANDARDS,
4098 and/or the 0.8.4.27 diff to check.
4099 * In full calls the compiler now does not generate checks for declared
4100 argument types for all arguments.
4101 * various threading fixes
4102 ** and some experimental patches which didn't make it into
4103 the main tree for this release, but which are shipped in
4104 contrib/experimental-thread.patch as a possible fix for some
4105 failures (deadlock, spinning...) in GC-intensive multithreaded
4107 * fixed PPC build problem (source code incompatibility of different
4108 library versions): added offsetof() hackery which attempts to divine
4109 where glibc maintainers put uc_mcontext today
4110 * fixed bug 282: compiler does not trust type assertions while passing
4111 arguments to a full call.
4112 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4113 &OPTIONAL VALUES type parameter.
4114 * fix bug 214: algorithm for noting rejected templates is now more
4115 similar to that of template seletion. (also reported by rydis on
4117 * fixed bug 141b: printing backquoted information readably and prettily
4118 inserts a space where necessary.
4119 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4120 (CHARACTER 10) are now reported as errors, rather than propagated
4121 as unknown types. (reported by piso on #lisp)
4122 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4123 with values NIL and :ERROR. (thanks to Milan Zamazal)
4124 * fixed bug 191c: CLOS now does proper keyword argument checking as
4125 described in CLHS 7.6.5 and 7.6.5.1.
4126 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4127 longer raise an error; further, using a list as a for-as-arithmetic
4128 counter now raises a meaningful error.
4129 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4130 now understood by sequence creation functions such as MAKE-SEQUENCE
4132 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4133 a STRING-INPUT-STREAM.
4134 * compiler enhancement: SIGNUM is now better able to derive the type
4136 * type declarations inside WITH-SLOTS are checked. (reported by
4138 * fixed some bugs revealed by Paul Dietz' test suite:
4139 ** incorrect optimization of TRUNCATE for a positive first
4140 argument and negative second.
4141 ** compiler failure in let-convertion during flushing dead code.
4142 ** compiler failure while deriving type of TRUNCATE on an
4143 interval, containing 0.
4144 ** ASH of a negative bignum by a negative bignum count now returns
4146 ** intersection of CONS types now canonicalizes properly, fixing
4147 inconsistencies in SUBTYPEP.
4149 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4150 * incompatible change: The --disable-debugger command line
4151 option now clobbers the debugger at a more fundamental
4152 level, by redefining #'INVOKE-DEBUGGER instead of by
4153 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4154 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4155 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4156 enter the debugger REPL and then suffer recursive errors
4157 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4158 while under the new system, BREAK in --disable-debugger mode
4159 terminates the system just as an unhandled error would.
4160 * fixed compiler performance when processing loops with a step >1;
4161 * bug fix: DOCUMENTATION now retrieves generic function
4162 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4163 support has been systematized, and now supports the methods
4164 specified by ANSI, along with a default method and a method for
4165 slot documentation. (reported by Nathan Froyd)
4166 * bug fix: effective methods associated with a generic function are
4167 no longer cached over a change of that generic function's method
4168 combination. (reported by Andreas Fuchs)
4169 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4170 names a non-existent directory. (thanks to Andreas Fuchs)
4171 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4172 the PPC platform, lead to stack corruption; this has been fixed.
4173 (reported by Rainer Joswig)
4174 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4175 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4176 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4177 arithmetic in general, is now much more reliable on the PPC
4179 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4180 platform now returns the right answer.
4181 * optimization: restored some effective method precomputation in
4182 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4183 precomputation is now tunable.
4184 * optimization: compiler-internal data structure use has been
4185 reviewed, and changes have been made that should improve the
4186 performance of the compiler by about 20%.
4187 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4188 simple-base-strings and simple-bit-vectors is improved.
4189 * optimization: the optimization of 32-bit logical and arithmetic
4190 functions introduced in version 0.8.3 on the x86 has been
4191 implemented on the mips, ppc and sparc platforms; an
4192 implementation of the same facility, but for 64-bit arithmetic,
4193 has been added for the alpha.
4194 * microoptimization: the compiler is better able to make use of the
4195 x86 LEA instruction for multiplication by constants.
4196 * bug fix: in some situations compiler did not report usage of
4197 generic arithmetic in (SPEED 3) policy.
4198 * bug 145b fix: compiler used wrong type specifier while converting
4199 MEMBER-types to numeric.
4200 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4202 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4203 index argument now works properly on the Alpha platform.
4204 * bug fix: floating point exception treatment on the Alpha platform
4206 * bug fix: FILE-POSITION works much better on string input and
4207 output streams. (thanks to Nikodemus Siivola)
4208 * bug fix: many threading/garbage collection symptoms sorted.
4209 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4210 might be pseudo-atomic.
4211 * internal change: Stopping for GC is now done with signals not
4212 ptrace. GC is now done in whichever thread wanted it, instead of
4214 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4216 * bug fix: result form in DO is not contained in the implicit
4218 * incompatible change: ICR structure is changed; the value part of
4219 CONTINUATION is now called LVAR; corresponding functions are
4220 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4221 * added type deriver for ISQRT (thanks to Robert E. Brown).
4222 * bug fix: better support for loading from the command line when an
4223 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4225 * fixed some bugs revealed by Paul Dietz' test suite:
4226 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4227 ** ROUND and FROUND now give the right answer when given very
4228 small float arguments.
4229 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4231 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4232 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4233 ** LCM should return a non-negative integer.
4234 ** PARSE-INTEGER returned the index of a terminator instead of the
4235 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4236 ** PARSE-INTEGER returned an incorrect index being applied to a
4238 ** LCM with two arguments of 0 returns 0 rather than signalling
4240 ** unsigned addition of a 32-bit constant with the high bit set no
4241 longer causes an internal compiler error on the x86.
4242 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4243 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4244 with negative last argument.
4245 ** byte specifiers with zero size and position no longer cause
4246 an error during type derivation.
4247 ** bignum multiplication on the Alpha platform now returns the
4249 * porting: The system now builds on SuSE AMD64, although it still
4250 generates a 32-bit binary.
4251 * .fasl file incompatibility: The fasl file version number has
4252 been incremented (because of the changes to internal compiler
4253 data structures referred to above).
4255 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4256 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4257 more accurately, on the Darwin kernel running on PowerPC hardware.
4258 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4259 * Compiler code deletion notes now signal a condition of type
4260 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4261 an associated MUFFLE-WARNING restart.
4262 * The compiler now performs limited argument count validation of
4263 constant format strings in FORMAT, and where appropriate in ERROR,
4264 CERROR and WARN. (thanks to Gerd Moellmann)
4265 * New ASDF-INSTALL contrib can be used for automatic download and
4266 installation of third-party Lisp code from CCLAN or other sites
4268 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4269 which forces another thread to execute a function supplied by the
4271 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4272 now accept and act upon their :ELEMENT-TYPE keyword argument.
4273 (reported by Martin Atzmueller, Edi Weitz)
4274 * bug fix: FILE-POSITION now accepts position designators up to
4275 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4276 is the greater. (thanks to Patrik Nordebo)
4277 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4278 Kalle Olavi Niemitalo)
4279 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4280 printable. (reported by Eric Marsden)
4281 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4282 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4283 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4284 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4285 (thanks to Stig Sandoe)
4286 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4287 UNREAD-CHAR now correctly includes the unread character in the
4288 target sequence. (thanks to Gerd Moellmann)
4289 * bug fix in threaded builds: the system can now be suspended and
4290 resumed by shell job control with minimal disruption.
4291 * bug fixes in times and timezones >2038AD
4292 * better handling of "where is GNU make?" problem in build scripts
4293 (thanks to Nikodemus Siivola)
4294 * new optimization: inside a named function any reference to a
4295 function with the same name is considered to be a self-reference;
4296 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4297 optimization quality.
4298 * new optimization on x86: logical functions and + now have
4299 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4300 used when the result is truncated to 32 bits.
4301 * VALUES declaration is partially enabled.
4302 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4303 * fixed some bugs revealed by Paul Dietz' test suite:
4304 ** The system now obeys the constraint imposed by
4305 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4306 types form a lattice under type intersection.
4307 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4308 ** ASSOC now ignores NIL elements in an alist.
4309 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4310 and (1+ MOST-POSITIVE-FIXNUM) answers.
4311 ** The addition of a method with invalid qualifiers to a generic
4312 function does not cause an error to be signalled immediately;
4313 a warning is signalled, and the error is generated only on
4314 calling the generic function.
4315 * changed .fasl file version number, in part to add type codes for
4316 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4317 obscure ANSI requirements
4319 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4320 * fixed bug 148: failure to inline-expand a local function left
4321 garbage, confusing the compiler.
4322 * fixed bugs 3cd: structure slot readers perform type check if the
4323 slot can have an invalid value (i.e. it is either not initialized
4324 or can be written with a less specific slot writer).
4325 * bug fix: the compiler now traps array references to elements off
4326 the end of an array; previously, the bounds checking in some
4327 circumstances could go off-by-one.
4328 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4330 * type declarations for array element types now obey the description
4331 on the CLHS page "Declaration TYPE", as per discussions on
4332 sbcl-help around 2003-05-08. This means that a declaration
4333 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4334 declaration, all references to BAR will be asserted or assumed
4335 (with THE, so dependent on compiler policy) to involve objects of
4336 type FOO. Note that no such declaration is implied in
4337 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4338 * declared types of functions from the "Conditions"
4339 chapter. (reported by Paul Dietz)
4340 * bug fix: CERROR accepts a function as its first argument.
4341 * bug fix: NTH an NTHCDR accept a bignum as index
4342 arguments. (reported by Adam Warner)
4343 * optimization: character compare routines now optimize comparing
4344 against a constant character. (reported by Gilbert Baumann)
4345 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4346 argument now works properly on the MIPS platform.
4347 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4348 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4349 declared to have a functional type, does not cause an error
4351 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4352 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4353 * fixed bug: if last continuation of a deleted block has a
4354 destination, this destination should be deleted too. (reported by
4356 * fixed a bug in the bootstrap process: the host compiler's values
4357 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4358 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4359 test case from Patrik Nordebo)
4360 * improved the ability of the disassembler on the PPC platform to
4361 provide helpful disassembly notes.
4362 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4363 the class in more cases than previously.
4364 * bug fix: FILE-POSITION now understands :START and :END for
4365 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4366 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4367 8) data. (thanks to David Lichteblau)
4368 * bug fix: it is possible to add a method to a generic function
4369 without lambda list.
4370 * bug fix: reader failed to signal END-OF-FILE inside an
4371 object representation. (reported by Nikodemus Siivola)
4372 * fixed some bugs revealed by Paul Dietz' test suite:
4373 ** LAST and [N]BUTLAST should accept a bignum.
4374 ** condition slot accessors are methods.
4375 ** (VECTOR NIL) is a subtype of STRING.
4377 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4378 * minor incompatible change: some nonsensical specialized lambda
4379 lists (used in DEFMETHOD) which were previously ignored now signal
4381 * minor incompatible change: the system is now aware of the types of
4382 variables in the COMMON-LISP package, and will signal errors for
4383 most violations of these type constraints (where previously they
4384 were silently accepted).
4385 * minor incompatible change: COMPILE-FILE now uses the freedom
4386 afforded (ANSI 3.2.2.3) to use derived function types for
4387 functions defined in the same file. This also permits the system
4388 to warn on static type mismatches and function
4389 redefinition. (Currently it does not work with high DEBUG level.)
4390 * minor incompatible change: VALUES declaration is disabled.
4391 * When issuing notes, the compiler now signals a condition of type
4392 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4393 restart for use in user handlers. It is expected that the
4394 COMPILER-NOTE condition will eventually become a condition
4395 supertype to a hierarchy of note types, which will then be
4396 handleable in a similar fashion. However, at the moment, no such
4397 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4398 but it's an implementation detail, not a classification for the
4400 * Changes in type checking closed the following bugs:
4401 ** type checking of unused values (192b, 194d, 203);
4402 ** template selection based on unsafe type assertions (192c, 236);
4403 ** type checking in branches (194bc).
4404 * A short form of VALUES type specifier has ANSI meaning (it has
4405 increased the number of situations when SBCL cannot perform type
4407 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4408 keywords or constants is permissible.
4409 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4410 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4411 classes. (thanks to Antonio Martinez)
4412 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4413 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4414 argument to a pretty-print stream. Instead, it leaves any such
4415 operations to DESCRIBE-OBJECT methods.
4416 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4418 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4419 lambda lists. (thanks to David Lichteblau)
4420 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4421 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4422 (thanks to Gerd Moellmann)
4423 * fixed bug 246: increased compilation speed of long
4424 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4426 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4428 * DEFCONSTANT now throws a condition of type
4429 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4430 constant to a non-EQL value; CONTINUE and ABORT restarts
4431 respectively change and preserve the value.
4432 * fixed bug 63: The code walker, part of the implementation of CLOS,
4433 is now better at handling symbol macros.
4434 * bug fix: There is no longer an internal implementation type named
4435 CL:LENGTH. (reported by Raymond Toy)
4436 * bug fix: In macro-like defining macros/special operators the
4437 implicit block does not enclose the lambda list.
4438 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4439 enclosed in parentheses) are not suitable as type specifiers, and
4440 their use properly signals an error now.
4441 * bug fix: An argument count mismatch for a type specifier in code
4442 being compiled no longer causes an unhandled error at compile
4443 time, but signals a compile-time warning.
4444 * fixed simple vector readable printing
4445 * bug fix: DESCRIBE takes more care over whether the class
4446 precedence list slot of a class is bound before accessing it.
4447 (reported by Markus Krummenacker)
4448 * bug fix: FORMATTER can successfully compile pretty-printer format
4449 strings which use variants of the ~* directive inside.
4450 * bug fix: SEARCH now applies its TEST predicate to the elements of
4451 the arguments in the correct order. (thanks to Wolfhard Buss)
4452 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4453 in type inference. (thanks to Robert E. Brown)
4454 * bug fix: Reading in symbols with an explicit package name of ""
4455 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4456 * fixed some bugs revealed by Paul Dietz' test suite:
4457 ** NIL is now allowed as a structure slot name.
4458 ** Arbitrary numbers, not just REALs, are allowed in certain
4459 circumstances in LOOP for-as-arithmetic clauses.
4460 ** Multiple class redefinitions before slot access no longer
4461 causes a type error.
4462 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4463 association between the name and a class.
4464 ** Generic functions with non-standard method-combination and over
4465 five methods all of which return constants no longer return NIL
4466 after the first few invocations. (thanks to Gerd Moellmann)
4467 ** CALL-NEXT-METHOD with no arguments now passes the original
4468 values of the arguments, even in the presence of assignment.
4469 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4471 ** DISASSEMBLE works with closures and funcallable instances.
4472 ** ADD-METHOD now returns the generic function, not the new method.
4473 ** FIND-METHOD signals an error if the lengths of the specializers
4474 is incompatible with the generic function, even if the ERRORP
4476 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4477 which its argument is a member.
4478 ** DEFCLASS only redefines the class named by its class-name
4479 argument if that name is the proper name of the class;
4480 otherwise, it creates a new class.
4481 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4482 of the UNBOUND-SLOT condition to the name of the slot.
4483 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4484 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4485 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4486 SLOT-MAKUNBOUND in the specified fashion.
4488 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4489 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4490 cross-compilation host. As a consequence, we can now bootstrap our
4491 way up to SBCL starting with a bare gcc toolchain and human-readable
4492 source code (first the source to CLISP, then the source to SBCL).
4493 * A contributed module containing a partial implementation of the
4494 simple-streams interface has been included. (thanks to Rudi
4496 * A contributed module implementing the RFC1321 Message Digest
4497 Algorithm, known as MD5, has been included.
4498 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4499 no longer has any effect, as the code controlled by this feature
4500 has been deleted. (As far as we know, no-one has ever built using
4501 this feature, and its semantics were confused in any case).
4502 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4503 work on conditions (as required by the ANSI specification),
4504 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4505 expected behaviour on conditions. Users should note, however,
4506 that such behaviour is not required by the ANSI specification,
4507 and so use of this behaviour may render their code unportable.
4508 * fixed some bugs revealed by Paul Dietz' test suite:
4509 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4511 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4512 ** SXHASH on condition objects no longer returns NIL.
4513 ** :ALLOCATION :CLASS slots are better treated; their values are
4514 updated on class redefinition, and initforms inherited from
4515 superclasses are applied.
4516 ** REMOVE-METHOD returns its generic function argument even when
4517 no method was removed.
4518 ** SHARED-INITIALIZE now initializes the values of the requested
4519 slots, including those with :ALLOCATION :CLASS.
4520 ** ALLOCATE-INSTANCE now works on structure classes defined via
4521 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4523 ** SLOT-EXISTS-P now works on conditions, as well as structures
4525 ** MAKE-LOAD-FORM now has the required methods on
4526 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4527 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4528 keyword, and now implements the SLOT-NAMES argument.
4529 ** methods with &OPTIONAL arguments no longer allow too many
4530 arguments to be passed in the call without error.
4531 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4532 option is consistent with the required arguments of the generic
4533 function lambda list.
4534 * bug fix: REQUIRE accepts a string designator. (Thanks to
4536 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4537 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4538 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4539 * bug fix: The compiler now checks for duplicated variables in macro
4541 * bug fix: SETQ on globals returns the correct value.
4542 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4543 not a COMPILER-ERROR (followed by some other strange error on
4544 choosing the CONTINUE restart).
4545 * bug fix: make.sh and friends are now more consistent in the way that
4546 they look for GNU "make".
4548 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4549 * experimental native threads support (on x86 Linux >=2.4 only).
4550 This is not compiled in by default: you need to add :SB-THREAD to
4551 the target features. See the "Beyond ANSI" chapter of the manual
4553 * fix for longstanding nonANSIism: The old distinction between
4554 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4555 The return value from CL:FIND-CLASS is now a CLOS class, and
4556 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4557 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4558 * An interface to the MetaObject Protocol, as described in Kiczales,
4559 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4560 MIT Press, 1991, is available from the SB-MOP package.
4561 * incompatible change: the SB-PCL package should now be considered
4562 a private implementation detail, and no longer a semi-private MOP
4564 * minor incompatible change: due to rearrangement for threads, the
4565 control stack and binding stack are now allocated at arbitrary
4566 addresses instead of being hardcoded per-port. Users affected by
4567 this probably have to be doing advanced things with shared
4568 libraries, and will know who they are.
4569 * minor incompatible change: Previously, all --eval forms used were
4570 processed with READ before any of them were processed with EVAL.
4571 Now each --eval form is processed with both READ and EVAL before
4572 the next --eval form is processed. (Thus package operations like
4573 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4574 work as the user might reasonably expect.)
4575 * minor incompatible change: *STANDARD-INPUT* is now only an
4576 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4578 * minor incompatible change: Y-OR-N-P is now character-oriented,
4579 not line oriented. Also, YES-OR-NO-P now works without errors.
4580 (thanks to Antonio Martinez)
4581 * sb-aclrepl module improvements: an integrated inspector, added
4582 repl features, and a bug fix to :trace command.
4583 * Known functions, which cannot be open coded by the backend, are
4584 considered to be able to check types of their arguments. (fixing
4585 a bug report by Nathan J. Froyd)
4586 * fixed a bug in computing method discriminating functions: It is
4587 now possible to define methods specialized on classes which have
4588 forward-referenced superclasses. (thanks to Gerd Moellmann)
4589 * fixed evaluation order in optional entries (reported by Gilbert
4591 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4592 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4593 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4594 required-by-AMOP NAME argument, as well as CLASS and
4595 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4596 * fixed bug 20: DEFMETHOD can define methods using names that are
4597 not the proper names of classes to designate class specializers.
4598 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4599 Unix file descriptors, instead of blowing up. (thanks to Antonio
4601 * Garbage collection refactoring: user-visible change is that a
4602 call to the GC function during WITHOUT-GCING will not do garbage
4603 collection until the end of the WITHOUT-GCING. If you were doing
4604 this you were probably losing anyway.
4605 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4606 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4607 TYPEP the latter but not the former.
4608 * The compiler issues a full WARNING for calls to undefined functions
4609 with names from the CL package.
4610 * MAP-INTO for a vector destination is open coded. (reported by
4611 Brian Downing on c.l.l)
4612 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4613 documentation string.
4614 * fixed some bugs revealed by Paul Dietz' test suite:
4615 ** COPY-ALIST now signals an error if its argument is a dotted
4617 ** Condition slots are now accessed more correctly in the presence
4618 of multiple initargs for a given slot.
4619 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4620 exclude restarts of the same name associated with a different
4622 ** DEFCLASS of forward-referenced classes with another
4623 forward-referenced class in the superclasses list no longer
4625 ** Condition slots are now initialized once each, not multiple
4626 times. (thanks to Gerd Moellmann)
4627 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4629 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4630 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4631 arguments contain duplicated elements.
4632 ** RESTART-CASE understands local macros.
4633 ** RESTART-CASE associates exactly its own restarts with a condition.
4634 ** ENDP in safe mode checks its argument to be of type LIST.
4635 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4636 in question is unbound.
4637 ** Optimized MAKE-INSTANCE functions no longer cause internal
4638 assertion failures in the presence of duplicate initargs.
4639 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4640 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4641 propagated even in the ctor optimized implementation of
4643 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4645 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4646 * a better implementation of SXHASH on (simple) bit vectors,
4647 measured both in execution speed and in distribution of results
4648 over the positive fixnums, has been installed. Likewise, a better
4649 implementation of EQUAL for simple bit vectors is now available.
4650 * fixed CEILING optimization for a divisor of form 2^k.
4651 * fixed bug 240 (emitting extra style warnings "using the lexical
4652 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4653 by Antonio Martinez)
4654 * fixed SXHASH, giving different results for NIL depending on type
4655 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4656 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4657 variable. (found by Rolf Wester)
4658 * SBCL does not ignore type declarations for special
4659 variables. (reported by rif on c.l.l 2003-03-05)
4660 * some bug fixes in contrib/sb-aclrepl/
4661 * fixed some bugs revealed by Paul Dietz' test suite:
4662 ** a bug in the CONS type specifier, whereby the CAR and CDR
4663 types got intertwined, has been fixed;
4664 ** the type system is now able to reason about the interaction
4665 between INTEGER and RATIO types more completely;
4666 ** APPEND, [N]REVERSE and NRECONC check that those their
4667 arguments, which must be proper lists, are really so;
4668 ** An array specialized to be unable to hold elements has been
4669 implemented, as required -- yes, really -- by ANSI;
4670 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4671 on malformed property lists;
4673 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4674 * incompatible packaging change: in line with Unix convention,
4675 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4676 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4677 * REQUIRE and PROVIDE are now optionally capable of doing something
4678 useful. See the documentation string for REQUIRE.
4679 * infrastructure for a managed SBCL contrib system: contributed
4680 modules in this release include:
4681 ** the ASDF system definition facility;
4682 ** an interface to the BSD Sockets API;
4683 ** an ACL-like convenience interface to the repl;
4684 (thanks to Kevin Rosenberg)
4685 ** an implementation of ROTATE-BYTE, with efficient implementation
4687 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4688 gives a closer approximation to the right answer than previously.
4689 (thanks to Raymond Toy)
4690 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4691 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4692 optional environment arguments, as required by ANSI.
4693 * fixed bugs in other functions taking environment objects, allowing
4694 calls with an explicit NIL environment argument to be compiled
4696 * fixed bug 228: primary return values from
4697 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4698 COMPILE or FUNCTION.
4699 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4700 :TYPE will no longer signal errors on innocuous objects.
4701 * fixed bug 231b: SETQ is better at respecting type declarations in
4702 the lexical environment.
4703 * fixed a bug in DEFCLASS: classes named by symbols with no or
4704 unprintable packages can now be defined.
4705 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4706 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4707 * fixed compiler failure related to checking types of functions.
4708 (reported by Robert E. Brown)
4709 * the compiler is now much more consistent in its error-checking
4710 treatment of bounding index arguments to sequence functions: in
4711 (SAFETY 3) code, errors will be signalled in almost all cases if
4712 invalid sequence bounding indices are passed to functions defined
4713 by ANSI to operate on sequences.
4714 * fixed a bug in the build procedure: documentation of SBCL-specific
4715 packages is now preserved and available in the final Lisp image.
4716 * lifted FDEFINITION lookup out of loops in the implementation of
4717 many list operations. (thanks to Robert E. Brown)
4718 * fixed a bug in the reader: the #n# reader macro now works for
4719 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4720 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4721 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4722 E. Brown and Tony Martinez respectively)
4723 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4724 SLOT-BOUNDP: in particular, it is now able to optimize them much
4725 better, and is now not vulnerable to having packages renamed.
4726 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4727 always called when a slot is not present in an instance. (thanks
4729 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4730 longer signal an error on unreading a character following EOF on
4731 the previous constituent stream. (thanks to Tony Martinez)
4732 * fixed some bugs revealed by Paul Dietz' test suite:
4733 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4734 not just nonnegative fixnums;
4735 ** the logical bit-array operators such as BIT-AND now accept an
4736 explicit NIL for their "opt-arg" argument (to indicate a
4737 freshly-consed result bit-array);
4738 ** ELT now signals an error on an invalid sequence index in safe
4740 ** the type system is now cleverer about negations of numeric
4741 types, and consequently understands the BIGNUM and RATIO types
4743 ** the type system is now cleverer about the interaction between
4744 INTEGER and RATIO types: while bugs still remain, many more
4745 cases are accurately computed;
4746 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4747 if it is in the last clause;
4748 ** CONSTANTLY now correctly returns a side-effect-free function in
4750 ** DECLARE is no longer treated as a special-operator; in
4751 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4752 * incremented fasl file version number due to the change in the
4753 DEFSTRUCT-SLOT-DESCRIPTION structure.
4755 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4756 * minor incompatible change: code processed by the "interpreter" or
4757 EVAL now has a compilation optimization policy of (DEBUG 2)
4758 (changed from (DEBUG 1)) to improve debuggability of interactive
4759 development, and to allow the use of the debug RETURN command in
4761 * an experimental implementation of the RETURN command for the
4762 debugger has been included. (thanks to Frederik Kuivinen)
4763 * fixed bug 62: constraints were not propagated into a loop.
4764 * fixed bug in embedded calls of SORT (reported and investigated by
4766 * fixed some bugs revealed by Paul Dietz' test suite:
4767 ** printing and reading of arrays with some dimensions having
4768 length 0 (thanks to Gerd Moellmann);
4769 ** BOA constructor with &AUX argument without a default value does
4770 not cause a type error;
4771 ** CONSTANTP now returns true for all self-evaluating objects.
4773 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4774 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4775 accessors that are related by inheritance, as specified in the
4776 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4777 Valtteri Vuorikoski)
4778 * The compiler is now able to inline functions that were defined in
4779 a complex lexical environment (e.g. inside a MACROLET).
4780 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4782 * Support for the upcoming FreeBSD-5.0 release has been included.
4783 (thanks to Dag-Erling Smorgrav)
4784 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4785 effect when it is not in a toplevel context.
4786 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4787 stand a better chance of being correct. (thanks to Gerd
4789 * fixed bug in COERCE, which now signals an error on coercing a
4790 rational to a bounded real type which excludes the expected
4792 * The compiler is now able to derive types more accurately from the
4793 COERCE and COMPILE functions.
4794 * fixed bug 223: functional binding is considered to be constant
4795 only for symbols in the CL package.
4796 * fixed bug 231: SETQ did not check the type of a variable being set
4797 (reported by Robert E. Brown)
4798 * A new optimization for MAKE-INSTANCE has been included, fixing
4799 various bugs (including relating to :ALLOCATION :CLASS slots and
4800 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4802 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4803 ** As required by ANSI, LOOP now disallows anonymous collection
4804 clauses such as COLLECT I in conjunction with aggregate boolean
4805 clauses such as THEREIS (= I 1);
4806 ** LOOP now signals an error when any variable is reused in the
4807 same loop (including the potentially useful construct analogous
4808 to WITH A = 1 WITH A = (1+ A);
4809 ** IT is only a special loop symbol within the first clause of a
4810 conditional loop clause;
4811 ** LOOP with a typed iteration variable over a hashtable now
4812 signals a type error iff it should.
4813 * fixed some other bugs revealed by Paul Dietz' test suite:
4814 ** FILE-STREAM now names the class previously known as FD-STREAM;
4815 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4816 argument) no longer signals an error;
4817 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4818 of the slot symbol, rather than using the current package
4819 ((:CONC-NAME "") continues to intern the slot's name in the
4821 * incremented fasl file version number, because of the incompatible
4822 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4823 of the new implementation of DEFINE-COMPILER-MACRO.
4825 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4826 * Support for building SBCL for MIPS platforms running in
4827 little-endian mode has now been checked in, and basic
4828 functionality on said platforms verified.
4829 * minor incompatible change: PCL now records the pathname of a file
4830 in which methods and the like are defined, rather than its
4832 * minor incompatible change: TRUENAME now considers the truename of
4833 a file naming a directory to be the pathname with :DIRECTORY
4834 component indicating that directory.
4835 * minor incompatible change: a NAMED clause in the extended form of
4836 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4837 reason for the previous behaviour is unclear.
4838 * more systematization and improvement of CLOS and MOP conformance
4839 in PCL (thanks to Gerd Moellman and Pierre Mai):
4840 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4842 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4843 primary methods with no specializers;
4844 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4846 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4847 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4848 FORWARD-REFERENCED-CLASSes; error reporting on
4849 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4851 ** SXHASH on CLOS instances now uses a slot internal to the
4852 instance to return different numbers on distinct instances,
4853 while preserving the same return value through invocations of
4855 ** DEFMETHOD signals errors when methods with longer incongruent
4856 lambda lists are added to generic functions;
4857 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4858 CLASS, as specified in AMOP;
4859 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4860 on the order returned by the primary method for classes of
4861 class STANDARD-CLASS;
4862 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4863 * fixed some bugs shown by Paul Dietz' test suite:
4864 ** DOLIST puts its body in TAGBODY;
4865 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4867 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4868 value producing form;
4869 ** if more variables are given to PROGV than values, extra
4870 variables are bound and made to have no value;
4871 ** NSUBSTITUTE on list arguments gets the right answer with
4873 ** ELT signals an error of type TYPE-ERROR when the index argument
4874 is not a valid sequence index;
4875 ** LOOP signals (at macroexpansion time) an error of type
4876 PROGRAM-ERROR when duplicate variable names are found;
4877 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4878 ** FUNCALL of special-operators now cause an error of type
4880 ** PSETQ now works as required in the presence of side-effecting
4881 symbol-macro places;
4882 ** NCONC accepts any object as its last argument;
4883 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4885 ** loop-for-as-package does not require a package to be explicitely
4887 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4889 * fixed bug 166: compiler preserves "there is a way to go"
4890 invariant when deleting code.
4891 * fixed bug 172: macro lambda lists with required arguments after
4892 &REST arguments now cause an error to be signalled. (thanks to
4894 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4895 bug. (thanks to Matthew Danish)
4896 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4898 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4899 arguments are lexically rebound. (thanks to Gerd Moellmann and
4901 * fixed bug 194: error messages are now more informative when there
4902 is no primary method applicable in a call to a generic
4903 function. (thanks to Gerd Moellmann)
4904 * fixed bug in command line argument checking (thanks to Julian
4906 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4907 (thanks to Matthew Danish)
4908 * incremented fasl file version number, because of the
4909 SXHASH-related changes in the layout of CLOS data structures
4911 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4912 * minor incompatible change: The runtime (the Unix executable named
4913 "sbcl") is now much pickier about the .core files it will load.
4914 Essentially it now requires .core files to descend from the same
4915 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4916 as the runtime does. (The intent is to prevent the crashes which
4917 can occur, and which can even be reported as mysterious failures,
4918 when people patch the sources or change the build parameters
4919 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4920 sbcl and .core files.)
4921 * fixed bug: VALUES-LIST is no longer optimized away.
4922 * fixed bug 142: The FFI conversion of C string values to Lisp
4923 string values no longer conses excessively. (thanks to Nathan
4924 Froyd porting Raymond Toy's fix to CMU CL)
4925 * began to systematize and improve MOP conformance in PCL (thanks to
4926 Nathan Froyd, Gerd Moellman and Pierre Mai):
4927 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4929 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4930 ** FINALIZE-INHERITANCE is now called on class finalization;
4931 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4932 argument precedence order.
4933 * fixed bug 202: The compiler no longer fails on functions whose
4934 derived types contradict their declared type.
4935 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4936 so it can be non-toplevel.
4937 * The fasl file version number has changed (because of the new
4938 implementation of DEFMACRO).
4939 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4940 safe code, that any length requirement by their type-specifier
4941 argument is valid. The exceptions to this are described in bug
4943 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4944 functions now check the types of their inputs as required by ANSI.
4945 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4946 introduced symbol is DECLAREd to be SPECIAL.
4947 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4948 * fixed bug: :COUNT argument to sequence functions may be negative
4949 * fixed bug: body of DO-SYMBOLS may contain declarations
4950 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4951 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4952 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4953 symbol macro only once
4954 * fixed printing of call frame when argument list is unavailable
4955 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4956 * compiler no longer signals WARNING on unknown keyword
4959 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4960 * A beta-quality port to the mips architecture running Linux,
4961 based on the old CMUCL backend, has been made. It has been tested
4962 on a big-endian kernel, and works sufficiently well to be able to
4963 rebuild itself; it has not been tested in little-endian mode.
4964 * fixed an inconsistency between gencgc.c and purify.c which made
4965 dumping/loading .core files unreliable
4966 * fixed bug 120a: The compiler now deals correctly with IFs where
4967 the consequent is the same as the alternative, instead of
4968 misderiving the return type. (thanks to Alexey Dejneka)
4969 * fixed bug 113: Logical pathnames are now dumpable (the logical
4970 host is resolved at load-time, throwing an error if it is not
4972 * fixed bug 174: FORMAT's error message is slightly clearer when a
4973 non-printing character is used in a format directive.
4974 * fixed several bugs in compiler checking of type declarations, i.e.
4975 violations of the Python "declarations are assertions" principle
4976 (thanks to Alexey Dejneka)
4977 * fixed several bugs in PCL's error checking (thanks to Gerd
4979 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4981 * fixed bug in compilation of functions as first class values
4982 (thanks to Antonio Martinez-Shotton)
4983 * The compiler's handling TYPE-ERRORs which it can prove will
4984 inevitably happen at runtime has been cleaned up and corrected
4985 in several ways. (thanks to Alexey Dejneka)
4986 * improved argument type checking for various basic arithmetic
4987 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4988 lavished on them in the past that they can be compiled in many
4989 ways in different special cases
4990 * fixed bug 181: compiler checks validity of user supplied type
4992 * cleaned up code flushing in optimization: Function calls which
4993 should signal errors for safety purposes (e.g. which ANSI says
4994 should signal errors when their arguments are of incorrect type)
4995 are no longer optimized away.
4996 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4997 * incremented fasl file version number, because changes in the
4998 implementation of sequence functions like COERCE caused
4999 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5000 in old inline expansions) to become undefined. (Actually these
5001 changes were later undone, so we might very well be binary
5002 compatible with 0.7.7 after all, but leaving the version number
5003 incremented seemed like the simplest and most conservative
5006 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5007 * An alpha-quality port to the parisc architecture running Linux,
5008 based on the old CMUCL backend, has been made. This, even more so
5009 than the other backends, should be considered still a work in
5010 progress; known problems include that the Linux kernel in 64-bit
5011 mode does not propagate the correct sigcontext structure to
5012 userspace, and consequently SBCL on a parisc64 kernel will not
5014 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5015 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5016 suppressed.) Also now that the compiler is looking at declarations
5017 in the environment, it checks optimization declarations as well,
5018 and suppresses inlining when (> DEBUG SPEED).
5019 * More fixes have been made to treatment of floating point exception
5020 treatment and other Unix signals. In particular, floating point
5021 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5022 * The detection and handling of control stack exhaustion (infinite
5023 or very deeply nested recursion) has changed. Stack exhaustion
5024 detection is now done by write-protecting pages at the OS level
5025 and applies at all optimization settings; when found, a
5026 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5027 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5028 be caught using IGNORE-ERRORS.
5029 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5030 correctly when transforming recursive LABELS functions to LETs.
5031 (thanks to Alexey Dejneka)
5032 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5033 that are names of constants or global variables.
5034 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5035 alien routines with docstrings.
5036 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5037 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5039 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5040 (thanks to Eric Marsden)
5041 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5042 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5043 * Bug fix: The SPARC backend can now compile functions involving
5044 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5045 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5046 to a functions expecting a PATHNAME-DESIGNATOR.
5047 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5048 lambda lists. (thanks to Alexey Dejneka)
5049 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5050 functions so that EXPORTing the name of the class doesn't cause
5051 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5052 to Antonio Martinez for reporting this)
5053 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5054 constant-folded without failing an assertion. (thanks to Einar
5055 Floystad Dorum for reporting this)
5056 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5057 types are now dealt with more correctly by the compiler.
5058 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5059 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5060 behaviour analogous to RENAME-FILE. This puts its behaviour more
5061 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5063 * The fasl file version number has changed again. (because of the
5064 bug fix involving the names of PCL MAKE-INSTANCE functions)
5066 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5067 * bug fix: Floating point exceptions are treated much more
5068 consistently on the x86/Linux and PPC/Linux platforms.
5069 * Array initialization with :INITIAL-ELEMENT is now much faster for
5070 cases when the compiler cannot open code the array creation, but
5071 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5072 array accesses have also seen a speed increase.
5073 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5074 specified. (This was at the root of some bad interactions between
5075 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5077 * bug fix: Internal error arguments for undefined functions are now
5078 computed correctly on the PPC/Linux platform.
5079 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5080 Raymond Toy's patch for CMU CL)
5081 * Support for the Solaris 9 operating environment has been included
5082 (thanks to Daniel Merritt)
5083 * A very ugly but hopefully complete draft of the missing FFI chapter
5084 of the manual has been created by reformatting the corresponding
5085 CMU CL manual chapter into (currently very ugly and incoherent)
5086 DocBook and bringing it up to date for SBCL behavior. Thus, the
5087 manual is now essentially complete, at least by my extreme
5088 once-and-only-once standards, whereby it's acceptable to refer to
5089 the doc strings of SB-EXT functions as the primary documentation.
5090 * The fasl file version number has changed again, due to cleanup of
5091 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5092 is no longer a static symbol.)
5094 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5095 * SBCL now builds with OpenMCL (version 0.12) as the
5096 cross-compilation host; also, more progress has been made toward
5097 bootstrapping under CLISP.
5098 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5100 * bug 158 fixed: The compiler can now deal with integer loop
5101 increments different from 1; fixing this turned out also to fix
5103 * bug 169 fixed: no more bogus warnings about using lexical bindings
5104 despite the presence of perfectly good SPECIAL declarations (thanks
5105 to David Lichteblau)
5106 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5107 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5108 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5110 * bug 180 fixed: Method combination specifications no longer ignore
5111 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5112 * bug fix: Structure type predicate functions now check their argument
5113 count as they should.
5114 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5115 correctly. (thanks to Pierre Mai)
5116 * minor incompatible change: The --noprogrammer option is deprecated
5117 in favor of the new --disable-debugger option, which is very similar.
5118 (The major difference is that it takes effect at a slightly different
5119 time at startup, causing handling of errors in --sysinit and
5120 --userinit files will be affected differently.) The
5121 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5122 been added to allow this functionality to be controlled from ordinary
5123 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5124 maintainers, who might want to run non-interactive scripts to
5125 build SBCL cores which will later be used interactively.)
5126 * minor incompatible change: The LOAD function no longer, when given
5127 a wild pathname to load, loads all files matching that pathname.
5128 Instead, an error of type FILE-ERROR is signalled.
5130 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5131 * bug 147 fixed: The compiler preserves its block link/count
5132 invariants more correctly now so that it doesn't crash. (thanks
5134 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5136 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5137 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5138 no-value-for-this-character as NIL (as specified by ANSI).
5139 * HOST-NAMESTRING on physical pathnames now returns a string that is
5140 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5141 (thanks to Christophe Rhodes)
5142 * The Alpha port handles icache flushing more correctly. (thanks to
5144 * More progress has been made toward bootstrapping under CLISP. (thanks
5145 to Christophe Rhodes)
5146 * The fasl file format has changed again, because dynamic loading
5147 on OpenBSD (which has non-ELF object files) motivated some cleanups
5148 in the way that foreign symbols are transformed and passed around.
5149 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5150 is no longer treated as whitespace by the reader, but instead as
5151 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5152 |A
\7fB|, instead of A as it used to.
5154 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5155 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5156 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5157 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5158 this as of 0.7.1.45, but was left out of the previous news section
5159 (thanks to Dan Barlow)
5160 * SBCL now runs on the Solaris operating system on SPARC architectures
5161 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5162 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5163 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5164 * SPARC backend cleanups, allowing builds of cores optimized for V8
5165 and V9 SPARCS, and also emission of code targeted to a particular
5166 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5168 * SBCL is closer to bootstrapping under CLISP, thanks to various
5169 fixes by Christophe Rhodes.
5170 * The fasl file format has changed again, to allow the compiler's
5171 INFO database to support symbol macros.
5172 * The user manual (in doc/) is formatted into HTML more nicely.
5173 (thanks to coreythomas)
5174 * The system is smarter about SUBTYPEP relationships, especially
5175 those involving NOT types (including types such as ATOM which are
5176 represented internally using NOT types). Thus SUBTYPEP is less
5177 likely to return (VALUES NIL NIL) in general, and in particular
5178 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5180 * The fasl file format has changed again, because the internal
5181 representation of types now includes a new slot to support the new
5182 SUBTYPEP-of-NOT-types logic.
5183 * (not a change in the main branch of SBCL, but a related prototype
5184 which can hopefully be merged into the main branch of SBCL in the
5185 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5186 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5187 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5188 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5189 dispatch macro character combinations. (thanks to Alexey Dejneka)
5190 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5191 that superficially look like logical namestrings correctly.
5192 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5194 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5195 default supplied-p) for &optional and &key arguments. (thanks to
5198 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5199 * incompatible change: The compiler is now less aggressive about
5200 tail call optimization, doing it only when (> SPACE DEBUG) or
5201 (> SPEED DEBUG). (This is an incompatible change because there are
5202 programs which relied on the old CMU-CL-style behavior to optimize
5203 away their unbounded recursion which will now die of stack overflow.)
5204 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5205 for non-GENCGC systems has been increased to 20M (since that
5206 seems much closer to the likely performance optimum for modern
5207 systems than the old 4M value was)
5208 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5209 and *DEBUG-PRINT-LEVEL*
5210 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5211 of CMU CL's support for SPARC, and various endianness and other
5212 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5213 * new syntactic sugar for the Unix command line: --load foo.bar is now
5214 an alternate notation for --eval '(load "foo.bar")'.
5216 ** The system now detects stack overflow and handles it gracefully,
5217 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5218 optimization settings. (This is a good thing in general, and
5219 its introduction in this version should be particularly timely
5220 for anyone whose code fails because of suppression of tail
5222 ** The system now hunts for the C variable "environ" in a more
5223 devious way, to avoid segfaults when the C library version differs
5224 between compile time and run time. (thanks to Christophe Rhodes)
5225 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5226 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5227 ** The compiler no longer issues bogus style warnings for undefined
5228 classes in the same source file as the DEFCLASSes which defined
5229 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5231 ** fixes in CONDITION class precedence list for undefined function
5232 errors (thanks to Alexei Dejneka)
5233 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5234 correctly. (thanks to Dan Barlow)
5235 ** portability fixes aiming at bootstrapping under CLISP (thanks
5236 to Dave McDonald and Christophe Rhodes)
5237 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5238 ** fixes in type translation and and type inference (thanks to
5240 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5241 ** various fixes in the new ports (thanks to Dan Barlow)
5242 * several changes related to debugging:
5243 ** suppression of tail recursion, as noted above
5244 ** stack overflow detection, as noted above
5245 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5246 is now the default. (For some time encapsulation has been more
5247 reliable than the breakpoint-based :ENCAPSULATE NIL
5248 implementation, at least on X86 systems; and I just noticed that
5249 encapsulation also seems closer to the spirit of the ANSI
5252 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5254 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5255 up properly again. (There was a packaging bug in 0.7.0 which
5256 left their definitions in SB-SYS::LOAD-FOREIGN and
5257 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5258 vital for most things which interface to C-level interfaces,
5259 like extensions working with sockets or databases or
5260 Perl-compatible regexes or whatever, and the need to fix
5261 this bug is the main reason that 0.7.1 was released so
5263 ** DEFGENERIC is now choosier about the methods it redefines, so that
5264 reLOADing a previously-LOADed file containing DEFGENERICs does
5265 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5266 cycle now works as it should. (thanks to Alexey Dejneka)
5267 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5268 fixed by Christophe Rhodes. (He actually submitted this patch
5269 months ago, and I delayed until after 0.7.0.)
5270 ** Bug 111 (internal compiler confusion about runtime checks on
5271 FUNCTION types) was fixed by Alexey Dejneka.
5272 * Some internal cleanups (getting rid of variables which aren't
5273 needed now that the byte interpreter is gone) caused the fasl
5274 file format number to change again.
5276 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5277 * major incompatible change: The default fasl file extension, i.e. the
5278 default extension for files produced by COMPILE-FILE, has changed
5279 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5281 ** There are many changes in the implementation of the compiler.
5282 SBCL is now essentially a compiler-only implementation of ANSI
5283 Common Lisp. EVAL still "interprets" a few special cases, but
5284 almost all the interesting cases are handled by creating
5285 a LAMBDA expression, calling COMPILE on it, then calling
5286 FUNCALL on the result.
5287 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5288 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5289 Since the code is newer, there might still be some new bugs
5290 (though not as many as before Martin Atzmueller's fixes:-). But
5291 the new code is substantially simpler and clearer, and hopefully
5292 any remaining bugs will be simpler, less fundamental, and more
5293 fixable then the bugs in the old code.
5294 ** The revised compiler is still a little unsteady on its feet.
5296 *** The debugging information it produces (particularly the names
5297 of FUNCTION objects) is sometimes much less useful than what
5298 the old compiler produced.
5299 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5300 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5301 within a MACROLET) has been temporarily weakened.
5302 ** There are new compiler optimizations for various functions:
5303 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5304 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5305 *** the math functions TRUNCATE, FLOOR, and CEILING
5306 *** the function-of-all-trades COERCE
5307 Mostly these should be transparent, but there's one
5308 potentially-annoying problem (bug 117): when the compiler
5309 inline-expands a function and does type analysis on the result,
5310 it can create control paths which have type mismatches, and
5311 when it can't prove that those control paths aren't taken,
5312 it will issue WARNINGs about the type mismatches. This is
5313 a particular problem in practice for the new sequence functions.
5314 It's not clear how this should be fixed, and for now, a
5315 workaround is given in the entry for 117 in the BUGS file.
5316 ** (Because of the interaction between the two previous items --
5317 occasional inlining problems and new inline expansions -- some
5318 of the new sequence function optimizations won't really kick in
5319 completely until debugging information, and then inlining, are
5320 straightened out in some future version.)
5321 * minor incompatible changes:
5322 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5323 DIRECTORY no longer implicitly promotes NIL slots of its
5324 pathname argument to :WILD. In particular, when you ask for the
5325 contents of a directory (which you used to be able to do without
5326 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5327 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5328 ** changes in behavior that ANSI explicitly defines to be
5329 implementation dependent:
5330 *** The new compiler-only implementation still conforms with ANSI,
5331 but acts a little different than before. Besides the obvious
5332 changes in performance tradeoffs (that the cost per form passed
5333 to EVAL has gone up, and the cost per form executed by EVAL
5334 has gone down), the behavior of the system changes a little
5335 because there are no longer any interpreted function objects.
5336 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5337 e.g. doing COMPILE on the output of interactive DEFUN is
5339 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5341 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5342 has changed from (:CL) to NIL.
5343 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5344 e.g. #\Newline and #\Tab, don't have names specified in the
5345 ANSI Common Lisp standard, is now based on their ASCII symbolic
5346 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5347 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5348 are no longer used for output.
5349 ** changes in internal implementation constants:
5350 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5351 4 million. (If your application spends a lot of time GCing and
5352 you have a lot of RAM, you might want to experiment with
5353 increasing it even more.)
5354 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5355 However, almost all old code should still continue to work without
5356 immediate update, as SB-C-CALL is now a (deprecated) nickname
5358 ** Old operator names in the style DEF-FOO are now deprecated in
5359 favor of new corresponding names DEFINE-FOO, for consistency with
5360 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5361 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5362 internal symbols, but a few supported extensions like
5363 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5364 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5365 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5366 etc. as you get deeper into recursive calls to the debugger
5367 command loop, instead of the old "5]", "5]]", "5]]]"
5368 sequence. (I was motivated to do this when squabbles between
5369 ILISP and SBCL left me very deeply nested in the debugger. In the
5370 short term, this change will probably provoke more ILISP/SBCL
5371 squabbles, but hopefully it will be an improvement in the long run.)
5372 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5373 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5374 function, since declaiming return types involving aliens is
5375 (1) annoyingly messy to do by hand and (2) vital to efficient
5376 compilation of code which calls such functions.
5377 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5378 longer reexported by the SB-EXT package. They're solely useful
5379 for alien code, so it seems more logical that you should get
5380 them from the SB-ALIEN package, not in SB-EXT.
5381 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5382 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5383 features. Instead, the code that they used to control is always
5384 built into the system.
5385 * many other bug fixes
5386 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5387 advantage of the new EVAL-WHEN stuff and to clean them up in
5388 general, and they are now more ANSI-compliant in a number of
5389 ways. Martin Atzmueller is responsible for a lot of this.
5390 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5392 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5393 *** correct ERROR type for various file operations
5394 *** some fixes for Lisp streams
5395 *** DEFMETHOD syntax checking
5396 *** changing old weird representation of debug information as
5397 strings (which, among their other deficiencies, don't transform
5398 correctly when you rename packages, and don't change their
5399 print representation when you change things like *PACKAGE*
5400 and *PRINT-LENGTH*) to symbols and lists of symbols
5401 He also made several improvements and fixed several bugs in DESCRIBE.
5402 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5404 *** misbehavior of WRITE-STRING/WRITE-LINE
5405 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5406 and several other LOOP problems as well
5407 *** DIRECTORY when similar filenames are present
5408 *** DEFGENERIC with :METHOD options
5409 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5410 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5411 *** argument ordering in FIND with :TEST option
5412 *** mishandled package designator argument in APROPOS-LIST
5413 *** various problems in the backquote readmacro
5414 *** a bug in APROPOS
5415 *** probably some others that I'm not describing very well here,
5416 since the CVS log documents them by reference to sbcl-devel
5417 messages, and the SourceForge archives aren't working well.:-(
5418 ** Dan Barlow improved the Alpha port (and is making progress on the
5419 PPC port, for those of you who think different).
5420 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5421 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5422 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5423 continues to work on the SPARC port (for those of you in a position
5424 to look down upon our little PC-compatible boxes from a great height).
5425 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5426 and uses that copy, rather than the current dynamic value, when
5427 it's trying to decide whether to truncate output. Thus e.g.
5428 (let ((*print-lines* 50))
5429 (pprint-logical-block (stream nil)
5431 (let ((*print-lines* 8))
5432 (print (aref possiblybigthings i) stream)))))
5433 should now truncate the logical block only at 50 lines, instead of
5434 often truncating it at 8 lines, as it did before.
5435 * The doc/cmucl/ directory, containing old CMU CL documentation
5436 from the time of the fork, is no longer part of the base system.
5437 SourceForge has shut down its anonymous FTP service, and with it
5438 my original plan for distributing the old CMU CL documentation
5439 there. For now, if you need these files you can download an old
5440 SBCL source release and extract them from it.
5441 * The fasl file version number changed again, for dozens of reasons,
5442 some of which are apparent above.
5444 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5445 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5446 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5447 patch, so that DISASSEMBLE output is much nicer.
5448 * The code in the SB-PROFILE package now seems reasonably stable.
5449 I still haven't decided what the final interface should look like
5450 (I'd like PROFILE to interact cleanly with TRACE, since both
5451 facilities use function encapsulation) but if you have a need
5452 for profiling now, you can probably use it successfully with
5453 the current CMU-CL-style interface.
5454 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5455 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5456 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5457 link now returns the dangling link itself, and for similar
5458 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5459 link itself. (In these cases the old code signalled an error and
5460 looped endlessly, respectively.) Thus, DIRECTORY now works even
5461 in the presence of dangling and cyclic symbolic links.
5462 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5463 is now a supported extension again, since the consensus on
5464 sbcl-devel was that it can be useful for ordinary development
5465 work, not just for debugging SBCL itself.
5466 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5467 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5468 that currently-defined functions might be redefined later with
5469 different return types.
5470 * Hash tables can be printed readably, as inspired by CMU CL code
5471 of Eric Marsden and SBCL code of Martin Atzmueller.
5472 * better error handling in CLOS method combination, thanks to
5473 Martin Atzmueller porting Pierre Mai's CMU CL patches
5474 * more overflow fixes for >16Mbyte I/O buffers
5475 * A bug in READ has been fixed, so that now a single Ctrl-D
5476 character suffices to cause end-of-file on character streams.
5477 In particular, now you only need one Ctrl-D at the command
5478 line (not two) to exit SBCL.
5479 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5481 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5482 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5483 does the right thing.
5484 * The implementation of some type tests, especially for CONDITION
5485 types, is now tidier and maybe faster, due to CMU CL code
5486 originally by Douglas Crosher, ported by Martin Atzmueller.
5487 * Some math functions have been fixed, and there are new
5488 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5489 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5490 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5491 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5492 likely to be built into sbcl-0.7.0.)
5493 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5494 CL, ported to SBCL by Martin Atzmueller)
5495 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5496 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5497 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5498 * There's a new slam.sh hack to shorten the edit/compile/debug
5499 cycle for low-level changes to SBCL itself, and a new
5500 :SB-AFTER-XC-CORE target feature to control the generation of
5501 the after-xc.core file needed by slam.sh.
5502 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5503 COMPILE-FILE is no longer supported, so that now every function
5504 gets an entry point, so that block compilation looks a little
5505 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5506 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5507 returns the number of bytes consed since the system started,
5508 rather than the number consed since the first time the function
5509 was called. (The new definition parallels ANSI functions like
5510 CL:GET-INTERNAL-RUN-TIME.)
5511 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5512 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5513 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5514 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5515 * Fasl file version numbers are now independent of the target CPU,
5516 since historically most system changes which required version
5517 number changes have affected all CPUs equally. Similarly,
5518 the byte fasl file version is now equal to the ordinary
5521 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5522 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5523 is no longer recognized. I apologize for this, because it was
5524 listed in SB-EXT as a supported extension, but I found that
5525 its existing behavior was poorly specified, as well as incorrectly
5526 specified, and it looked like too much of a mess to straighten it
5527 out. I have enough on my hands trying to get ANSI stuff to work..
5528 * many patches ported from CMU CL by Martin Atzmueller, with
5529 half a dozen bug fixes in pretty-printing and the debugger, and
5530 half a dozen others elsewhere
5531 * fixed bug 13: Floating point infinities are now supported again.
5532 They might still be a little bit flaky, but thanks to bug reports
5533 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5534 as flaky as they were.
5535 * The --noprogrammer command line option is now supported. (Its
5536 behavior is slightly different in detail from what the old man
5537 page claimed it would do, but it's still appropriate under the
5538 same circumstances that the man page talks about.)
5539 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5540 are now supported, and enabled by default. Thus, the compiler can
5541 handle many floating point and complex operations much less
5542 inefficiently. (Thus e.g. you can implement a complex FFT
5544 * The compiler now detects type mismatches between DECLAIM FTYPE
5545 and DEFUN better, and implements CHECK-TYPE more correctly, and
5546 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5547 thanks to patches from Martin Atzmueller.
5548 * various fixes to make the cross-compiler more portable to
5549 ANSI-conforming-but-different cross-compilation hosts (notably
5550 Lispworks for Windows, following bug reports from Arthur Lemmens)
5551 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5552 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5553 fixed thanks to Pierre Mai's CMU CL patches.
5554 * fixes to keep the system from overflowing internal counters when
5555 it tries to use i/o buffers larger than 16M bytes
5556 * fixed bug 45a: Various internal functions required to support
5557 complex special functions have been merged from CMU CL sources.
5558 (When I was first setting up SBCL, I misunderstood a compile-time
5559 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5560 * improved support for type intersection and union, fixing bug 12
5561 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5562 more obscure bugs as well
5563 * some steps toward byte-compiling non-performance-critical
5564 parts of the system, courtesy of patches from Martin Atzmueller
5565 * Christophe Rhodes has made some debian packages of sbcl at
5566 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5567 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5568 stable, but are nonetheless usable. When he's ready, I'd be happy
5569 to add them to the SourceForge "File Releases" section. (And if
5570 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5571 * new fasl file format version number (because of changes in
5572 internal representation of (OR ..) types to accommodate the new
5573 support for (AND ..) types, among other things)
5575 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5576 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5578 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5580 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5581 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5582 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5583 * DESCRIBE now works on structure objects again.
5584 * Most function call argument type mismatches are now handled as
5585 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5586 know whether the function will be redefined before the call is
5587 executed. (The compiler could flag local calls with full WARNINGs,
5588 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5589 it doesn't keep track of enough information to know whether calls
5590 are local in this sense.)
5591 * Compiler output is now more verbose, with messages truncated
5592 later than before. (There should be some supported way for users
5593 to override the default verbosity, but I haven't decided how to
5594 provide it yet, so this behavior is still controlled by the internal
5595 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5596 src/compiler/ir1util.lisp.)
5597 * Fasl file format version numbers have increased again, because
5598 support for the Gray streams extension changes the layout of the
5599 system's STREAM objects.
5600 * The Gray subclassable streams extension now works, thanks to a
5601 patch from Martin Atzmueller.
5602 * The full LOAD-FOREIGN extension (not just the primitive
5603 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5604 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5605 but like most other programs, it defaults to copying the Unix
5606 environment from the original process instead of starting the
5607 new process in an empty environment.
5608 * Extensions which manipulate the Unix environment now support
5609 an :ENVIRONMENT keyword option which doesn't smash case or
5610 do other bad things. The CMU-CL-style :ENV option is retained
5611 for porting convenience.
5612 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5613 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5615 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5617 * A patch from Martin Atzmueller seems to have solved the SIGINT
5618 problem, and as far as we know, signal-handling now works cleanly.
5619 (If you find any new bugs, please report them!)
5620 * The system no longer defaults Lisp source file names to types
5621 ".l", ".cl", or ".lsp", but only to ".lisp".
5622 * The compiler no longer uses special default file extensions for
5623 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5624 seems to expect a single default extension for all compiled code,
5625 and there's no compelling reason to try to stretch the standard
5626 to allow two different extensions.) Instead, byte-compiled files
5627 default to the same extension as native-compiled files.
5628 * Fasl file format version numbers have increased again, because
5629 a rearrangement of internal implementation packages made some
5630 dumped symbols in old fasl files unreadable in new cores.
5631 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5632 many fewer weird special cases.
5633 * Bug #17 (differing COMPILE-FILE behavior between logical and
5634 physical pathnames) has been fixed, and some related misbehavior too,
5635 thanks to a patch from Martin Atzmueller.
5636 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5637 by Tim Moore, ported to SBCL by Martin Atzmueller.
5638 * Martin Atzmueller fixed several filesystem-related problems,
5639 including bug #36, in part by porting CMU CL patches, which were
5640 written in part by Paul Werkowski.
5641 * More compiler warnings in src/runtime/ are gone, thanks to
5642 more patches from Martin Atzmueller.
5643 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5646 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5648 * DESCRIBE now works on CONDITION objects.
5649 * The debugger now handles errors which arise when trying to print
5650 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5652 * The build system now uses an additional file, customize-target-features.lisp,
5653 to allow local modifications to the target *FEATURES* list. (The point of
5654 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5655 debugging features enabled, without having to worry about propagating it
5656 into everyone's system when I do a "cvs update".) When no
5657 customize-target-features.lisp file exists, the target *FEATURES* list
5658 should be constructed the same way as before.
5659 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5660 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5661 warn about behavior which is undefined under the ANSI spec. Note: This
5662 is specified by ANSI, but it's not very popular with programmers.
5663 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5664 macro in the SBCL sources for an example of a workaround which you
5665 might use to make portable ANSI-standard code which does what you want.
5666 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5667 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5668 when it's used as a non-toplevel form. (This is required in order
5669 to implement the DEFCONSTANT-EQX macro.)
5670 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5671 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5672 funny things, due to bugs in the implementation of EVAL-WHEN
5673 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5674 non-toplevel DEFCONSTANTs are uncommon.)
5675 * The core file version number and fasl file version number have been
5676 incremented, because the old noncompliant DEFCONSTANT behavior involved
5677 calling functions which no longer exist, and because I also took the
5678 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5679 * fixed bug 1 (error handling before read-eval-print loop starts), and
5680 redid debugger restarts and related debugger commands somewhat while
5682 ** The QUIT debugger command is gone, since it did something
5683 rather different than the SB-EXT:QUIT command, and since it never
5684 worked properly outside the main toplevel read/eval/print loop.
5685 Invoking the new TOPLEVEL restart provides the same functionality.
5686 ** The GO debugger command is also gone, since you can just invoke
5687 the CONTINUE restart directly instead.
5688 ** The TOP debugger command is also gone, since it's redundant with the
5689 FRAME 0 command, and since it interfered with abbreviations for the
5691 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5693 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5694 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5695 some porting work by Martin Atzmueller)
5696 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5697 with a boatload of patches which he ported to SBCL. Now that those
5699 ** The system tries to make sure that its low-priority messages
5700 are prefixed by semicolons, to help people who like to use
5701 syntax highlighting in their ILISP buffer. (This patch
5702 was originally due to Raymond Toy.)
5703 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5704 patches originally written by Raymond Toy.
5705 ** The compiler understands coercion between single-value and
5706 multiple-VALUES type expressions better, getting rid of some very
5707 weird behavior, thanks to patches originally by Robert MacLachlan
5708 and Douglas Crosher.
5709 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5710 lambda lists, thanks to a patch originally by Pierre Mai.
5711 ** The system no longer bogusly warns about "abbreviated type
5713 ** The compiler gets less confused by inlining and RETURN-FROM,
5714 thanks to some patches originally by Tim Moore.
5715 ** The system no longer hangs when dumping circular lists to fasl
5716 files, thanks to a patch originally from Douglas Crosher.
5717 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5718 undefined function error.
5719 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5720 in structure slot initforms) for now, documented workaround instead:-|
5721 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5722 * fixed bug 5: added stubs for various Gray stream functions called
5723 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5724 installed, at least appropriate type errors are generated
5725 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5726 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5727 consistently in DEFMETHOD forms.
5728 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5729 it doesn't seem to affect SBCL after all
5730 * The C runtime system now builds with better optimization and many
5731 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5733 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5735 * The system is now under CVS at SourceForge (instead of the
5736 CVS repository on my home machine).
5737 * The new signal handling code has been tweaked to treat register
5738 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5739 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5740 downstream, e.g. in debug-int.lisp, has implicit dependencies
5741 on the unsignedness of integer representation of machine words,
5742 and that caused the system to bomb out with infinite regress
5743 when trying to recover from type errors involving signed values,
5744 e.g. (BUTLAST '(1 2 3) -1).)
5745 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5746 (This was one of the bugs Peter Van Eynde reported back in July.)
5747 * The system now uses code inspired by Colin Walters' O(N)
5748 implementation of MAP (from the cmucl-imp@cons.org mailing
5749 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5750 inline the MAP operation, and there is more than one
5751 sequence argument to the MAP call (so that it can't just
5752 do ETYPECASE once and for all based on the type of the
5753 single sequence argument). (The old non-inline implementation
5754 of the general M-argument sequence-of-length-N case required
5755 O(M*N*N) time when any of the sequence arguments were LISTs.)
5756 * The QUIT :UNIX-CODE keyword argument has been renamed to
5757 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5758 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5760 * Raymond Wiker's patches to port dynamic loading from Linux to
5761 FreeBSD have been added.
5762 * The BUGS file is now more nearly up to date, thanks in large part
5763 to Martin Atzmueller's review of it.
5764 * The debugger now flushes standard output streams before it begins
5765 its output ("debugger invoked" and so forth).
5766 * The core version number and fasl file version number have both
5767 been incremented, because of incompatible changes in the layout
5769 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5770 used to not be called for a saved Lisp image.)
5771 * Martin Atzmueller's version of a patch to fix a compiler crash,
5772 as posted on sbcl-devel 13 September 2000, has been installed.
5773 * Instead of installing Martin Atzmueller's patch for the
5774 compiler transform for SUBSEQ, I deleted the compiler transform,
5775 and transforms for some similar consing operations.
5776 * A bug in signal handling which kept TRACE from working on OpenBSD
5778 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5779 away by constant folding
5780 * The system now defines its address space constants in one place
5781 (in the Lisp sources), and propagates them automatically elsewhere
5782 (through GENESIS and the sbcl.h file). Therefore, patching the
5783 address map is less unnecessarily tedious and error-prone. The
5784 Lisp names of address space constants have also been systematized.
5785 * CVS tags like dollar-Header-dollar have been removed from
5786 the sources, because they have never saved me trouble and
5787 they've been source of trouble working with patches and other
5788 diff-related operations.
5789 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5790 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5792 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5794 * The system has been ported to OpenBSD.
5795 * The system now compiles with a simple "sh make.sh" on the systems
5796 that it's supported on. I.e., now you no longer need to tweak
5797 text in the target-features.lisp-expr and symlinks in src/runtime/
5798 by hand, the make.sh takes care of it for you.
5799 * The system is no longer so grossly inefficient when compiling code
5800 involving vectors implemented as general (not simple) vectors (VECTOR T),
5801 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5802 which dares to use the various sequence functions on non-simple
5803 vectors, takes less of a performance hit.
5804 * There is now a primitive type predicate VECTOR-T-P
5805 to test for the (VECTOR T) type, so that e.g.
5806 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5807 can now be compiled with some semblance of efficiency. (The old code
5808 turned the type declaration into a full call to %TYPEP at runtime!)
5809 * AREF on (VECTOR T) is still not fast, since it's still compiled
5810 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5811 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5812 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5813 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5814 without making full calls to SUBTYPEP at runtime.
5815 (Some analogous efficiency issues for non-simple vectors specialized to
5816 element types other than T, or for non-simple multidimensional arrays,
5817 have not been addressed. They could almost certainly be handled the
5818 same way if anyone is motivated to do so.)
5819 * The changes in array handling break binary compatibility, so
5820 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5821 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5822 instead of (VALUES T T).
5823 * By following the instructions that Dan Barlow posted to sbcl-devel
5824 on 2 July 2000, I was able to enable primitive dynamic object
5825 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5826 functionality is not implemented (since it calls ld to resolve
5827 library references automatically, requiring RUN-PROGRAM for its
5828 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5829 try to resolve library references) is now supported.
5830 * The system now flushes the standard output streams when it terminates,
5831 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5832 them at several other probably-convenient times, e.g. in each pass of
5833 the toplevel read-eval-print loop, and after evaluating a form given
5834 as an "--eval" command-line option. (These changes were motivated by a
5835 discussion of stream flushing issues on cmucl-imp in August 2000.)
5836 * The source transform for TYPEP of array types no longer assumes
5837 that an array whose element type is a not-yet-defined type
5838 is implemented as an array of T, but instead punts, so that the
5839 type will be interpreted at runtime.
5840 * There is now some support for cross-compiling in make.sh: each of
5841 the phases of make.sh has its own script. (This should be transparent
5842 to people doing ordinary, non-cross-compile builds.)
5843 * Since my laptop doesn't have hundreds of megabytes of memory like
5844 my desktop machine, I became more motivated to do some items on
5845 my to-do list in order to reduce the size of the system a little:
5846 ** Arrange for various needed-only-at-cold-init things to be
5847 uninterned after cold init. To support this, those things have
5848 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5849 symbols with such names are now uninterned after cold init).
5850 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5851 fasl files for cold load.
5852 ** Remove the old compiler structure pooling code (which used to
5853 be conditional on the target feature :SB-ALLOC) completely.
5854 ** Redo the representation of some data in cold init to be more compact.
5855 (I also looked into supporting byte compiled code at bootstrap time,
5856 which would probably reduce the size of the system a lot, but that
5857 looked too complicated, so I punted for now.)
5858 * The maximum signal nesting depth in the src/runtime/ support code has
5859 been reduced from 4096 to 256. (I don't know any reason for the very
5860 large old value. If the new smaller value turns out to break something,
5861 I'll probably just bump it back up.)
5862 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5864 * Many, many bugs reported by Peter Van Eynde have been added to
5865 the BUGS list; some have even been fixed.
5866 * While enabling dynamic object file loading, I tried to make the
5867 code easier to understand, renaming various functions and variables
5868 with less ambiguous names, and changing some function calling
5869 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5870 * While trying to figure out how to do the OpenBSD port, I tried to
5871 clean up some of the code in src/runtime/. In particular, I dropped
5872 support for non-POSIX signal handling, added various comments,
5873 tweaked the code to reduce the number of compilation warnings, and
5874 renamed some files to increase consistency.
5875 * To support the new automatic configuration functionality in make.sh,
5876 the source file target-features.lisp-expr has been replaced with the
5877 source file base-target-features.lisp-expr and the machine-generated
5878 file local-target-features.lisp-expr.
5879 * fixed a stupid quoting error in make.sh so that using CMU CL
5880 "lisp -batch" as cross-compilation host works again
5882 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5884 * DESCRIBE no longer tries to call itself recursively to describe
5885 bound/fbound values, so that it no longer fails on symbols which are
5886 bound to themselves (like keywords, T, and NIL).
5887 * DESCRIBE now works on generic functions.
5888 * The printer now prints less-screwed-up representations of closures
5889 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5890 * A private symbol is used instead of the :EMPTY keyword previously
5891 used to mark empty slots in hash tables. Thus
5892 (DEFVAR *HT* (MAKE-HASH-TABLE))
5893 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5894 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5895 now does what ANSI says that it should. (You can still get
5896 similar noncompliant behavior if bang on the hash table
5897 implementation with all the symbols you get back from
5898 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5899 This breaks binary compatibility, since tests for equality to
5900 :EMPTY are wired into things like the macroexpansion of
5901 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5903 * There's now a minimal placeholder implementation for CL:STEP,
5904 as required by ANSI.
5905 * An obscure bug in the interaction of the normal compiler, the byte
5906 compiler, inlining, and structure predicates has been patched
5907 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5908 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5910 * Missing ordinary arguments in a macro call are now detected even
5911 when the macro lambda list contains &KEY or &REST.
5912 * The debugger no longer complains about encountering the top of the
5913 stack when you type "FRAME 0" to explicitly instruct it to go to
5914 the top of the stack. And it now prints the frame you request even
5915 if it's the current frame (instead of saying "You are here.").
5916 * As specified by ANSI, the system now always prints keywords
5917 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5919 * The default initial SIZE of HASH-TABLEs is now smaller.
5920 * Type information from CLOS class dispatch is now propagated
5921 into DEFMETHOD bodies, so that e.g.
5922 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5924 is now basically equivalent to
5925 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5926 (DECLARE (TYPE SINGLE-FLOAT X))
5928 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5929 operation, without having to do run-time type dispatch.
5930 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5931 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5932 * Since I don't seem to be making big file reorganizations very often
5933 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5934 is overflowing my ability to conveniently back them up), I've finally
5935 checked the system into CVS. (The CVS repository is on my home system,
5936 not at SourceForge -- putting it on SourceForge might come later.)
5937 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5938 high-level GC-NOTIFY-FOO functions send their output. (There's
5939 still very little control of where low-level verbose GC functions
5940 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5941 less than it used to -- the GC-NOTIFY-FOO functions are now under
5942 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5943 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5944 in only one place in the source code, and propagates it automatically
5945 everywhere that it's needed. Thus e.g. when I bump the version from
5946 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5947 * The C source files now include boilerplate legalese and documentation
5948 at the head of each file (just as the Lisp source files already did).
5949 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5950 to his page will be replaced with a link to his new CLiki service.
5952 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5954 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5955 * The build process now looks for GNU make under the default name "gmake",
5956 instead of "make" as it used to. If GNU make is not available as "gmake"
5957 on your system, you can change this default behavior by setting the
5958 GNUMAKE environment variable.
5959 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5960 can build without error under CMU CL.
5962 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5964 * There is now a partial SBCL user manual (with some new text and some
5965 text cribbed from the CMU CL manual).
5966 * The beginnings of a profiler have been added (starting with the
5967 CMU CL profiler and simplifying and cleaning up). Eventually the
5968 main interface should be through the TRACE macro, but for now,
5969 it's still accessed through vaguely CMU-CL-style functions and macros
5970 exported from the package SB-PROFILE.
5971 * Some problems left over from porting CMU CL to the new
5972 cross-compilation bootstrap process have been cleaned up:
5973 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5974 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5975 part when getting rid of the compiler *BACKEND* stuff.)
5976 ** The value of *NULL-TYPE* was screwed up, because it was
5977 being initialized before the type system knew the final
5978 definition of the 'NULL type. This screwed up several key
5979 optimizations in the compiler, causing inefficiency in all sorts
5980 of places. (I found it because I wanted to understand why
5981 GET-INTERNAL-RUN-TIME was consing.)
5982 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5983 PROCLAIM FTYPE information. Unfortunately this broke binary
5984 compatibility again, since now the forms output by DEFGENERIC
5985 to refer to functions which didn't exist in 0.6.3.
5986 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5987 can use the new (as of 0.6.3) transform for SOME into MAP into
5989 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5990 values to (INTEGER 0 1000000), so that the time code will no longer
5991 occasionally get blown up by Linux returning 1000000 microseconds
5992 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5993 its output conform to the ANSI spec. (Alas, this makes its output
5994 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5995 * A full call to MAP NIL with a single sequence argument no longer conses.
5996 * fixes to problems pointed out by Martin Atzmueller:
5997 * The manual page no longer talks about multiprocessing as though
5998 it were currently supported.
5999 * The ILISP support patches have been removed from the distribution,
6000 because as of version 5.10.1, ILISP now supports SBCL without us
6001 having to maintain patches.
6002 * added a modified version of Raymond Toy's recent CMU CL patch for
6003 EQUALP comparison of HASH-TABLE
6005 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6007 * The system still can't cross-compile itself with
6008 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6009 entails), but at least it can compile more of itself that way
6010 than it used to be able to, and various buglets which were uncovered
6011 by trying to cross-compile itself that way have now been fixed.
6012 * This release breaks binary compatibility again. This time
6013 at least I've incremented the FASL file format version to 2, so that the
6014 problem can be detected reliably instead of just causing weird errors.
6015 * various new style warnings:
6016 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6017 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6018 ** using the lexical binding of a variable named in the *FOO* style
6019 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6020 as specified by ANSI.
6021 * *RANDOM-STATE* is no longer automatically initialized from
6022 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6023 default behavior of the system is to repeat its behavior every time
6024 it's run. If you'd like to change this behavior, you can always
6025 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6026 old convention there was no comparably easy way to get the system to
6027 repeat its behavior every time it was run.
6028 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6029 FTYPE declarations has been removed, in favor of their ANSI
6030 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6031 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6032 the types of their sequence arguments can be determined at compile time.
6033 This is done through a new open code expansion for MAP which eliminates
6034 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6035 argument types can be determined at compile time.
6036 * The optimizer now transforms COERCE into an identity operation when it
6037 can prove that the coerced object is already of the correct type. (This
6038 can be a win for machine generated code, including the output of other
6039 optimization transforms, such as the MAP transform above.)
6040 * Credit information has been moved from source file headers into CREDITS.
6041 * Source file headers have been made more standard.
6042 * The CASE macro now compiles without complaining even when it has
6045 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6047 * (Note that the way that the PCL macroexpansions were rewritten
6048 to accommodate the change in DEFGENERIC below breaks binary
6049 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6050 not run under sbcl-0.6.2. Once we get out of alpha releases,
6051 i.e. hit release 1.0.0, we'll probably try to maintain binary
6052 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6053 and sbcl-1.4.4. Until then, however, it might be fairly common
6054 for maintenance releases to break binary compatibility.)
6055 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6057 * The reporting of unhandled signals has been changed to print some
6058 explanatory text as well as the report form. (Previously only
6059 the report form was printed.)
6060 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6061 it defines, so that the compiler no longer issues undefined function
6062 warnings for compiled-but-not-yet-loaded generic functions.
6063 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6064 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6065 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6066 section of the ANSI spec are supported.
6067 * The "" nickname for the "KEYWORD" package has been removed.
6068 The reader still handles symbol tokens which begin with a package marker
6069 as keywords, but it doesn't expose its mechanism for doing so in the
6070 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6071 * The system now issues STYLE-WARNINGs for contradictory TYPE
6072 proclamations. (Warnings for contradictory FTYPE proclamations would
6073 be nice too, but those can't be done usefully unless the type system
6074 is made smarter about FUNCTION types.)
6075 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6076 systematized, so that "*target-*.lisp is supposed to exist only on the
6077 target and imply that there's a related file which exists on the
6078 host, and *host-*.lisp is supposed to exist only on the host and imply
6079 that there's a related file which exists on the target. This involves a
6080 lot of renaming. Hopefully the acute confusion caused by the renaming
6081 will be justified by the reduction in chronic confusion..
6082 ** runtime-type.lisp -> early-target-type.lisp
6083 ** target-type.lisp -> late-target-type.lisp
6084 ** early-host-format.lisp -> early-format.lisp
6085 ** late-host-format.lisp -> late-format.lisp
6086 ** host-error.lisp -> misc-error.lisp
6087 ** early-error.lisp -> early-target-error.lisp
6088 ** late-error.lisp -> late-target-error.lisp
6089 ** host-defboot.lisp -> early-defboot.lisp
6090 ** code/misc.lisp -> code/target-misc.lisp
6091 ** code/host-misc.lisp -> code/misc.lisp
6092 ** code/numbers.lisp -> code/target-numbers.lisp
6093 ** code/early-numbers.lisp -> numbers.lisp
6094 ** early-host-type.lisp -> early-type.lisp
6095 ** late-host-type.lisp -> late-type.lisp
6096 ** host-typep.lisp -> typep.lisp
6097 ** load.lisp -> target-load.lisp
6098 ** host-load.lisp -> load.lisp
6099 ** host-disassem.lisp -> disassem.lisp
6100 ** host-insts.lisp -> insts.lisp
6101 ** byte-comp.lisp -> target-byte-comp.lisp
6102 ** host-byte-comp.lisp -> byte-comp.lisp
6103 ** host-signal.lisp -> signal.lisp
6104 ** host-defstruct.lisp -> defstruct.lisp
6105 ** late-target-type.lisp -> deftypes-for-target.lisp
6106 Furthermore, several other previously target-only files foo.lisp (e.g.
6107 hash-table.lisp and random.lisp) have been split into a target-and-host
6108 foo.lisp file and a target-only target-foo.lisp file, with their key type
6109 definitions in the target-and-host part, so that the cross-compiler will
6110 know more about target types.
6111 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6112 gone away. In their place are various *BACKEND-FOO* variables
6113 corresponding to the slots of the old structure.
6114 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6115 into the target SBCL has been fixed.
6116 * The chill.lisp system for loading cold code into a running SBCL
6118 * Support for the CMU CL "scavenger hook" extension has been removed.
6119 (It was undocumented and unused in the CMU CL sources that SBCL was
6120 derived from, and stale in sbcl-0.6.1.)
6121 * Various errors in the cross-compiler type system were detected
6122 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6123 (enabling various consistency checks). Many of them were fixed,
6124 but some hard problems remain, so the compiler is back to
6125 running without *TYPE-SYSTEM-INITIALIZED* for now.
6126 * As part of the cross-compiler type system cleanup, I implemented
6127 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6128 * I have started adding UNCROSS calls throughout the type system
6129 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6130 on cross-compiler input files will be able to go away, and various
6132 * CONSTANTP now returns true for quoted forms (as explicitly required
6135 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6137 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6138 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6139 (MAKE-LIST -1). In the longer term, it ought to become true
6140 that declarations are assertions even at SAFETY 1. For now, it's not
6141 quite true even at SAFETY 3, but it's at least more nearly true..
6142 (Note that this change seems to increases the size of the system by
6143 O(5%) and to decrease the speed of the compiler by 20% or more.)
6144 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6145 for the problem of printing dozens of lines of distracting information
6146 about low-level system machinery as part of the top stack frame
6147 on entry to the debugger when an undefined function was called.
6148 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6149 is not reset to COMMON-LISP-USER.
6150 * Compilation of stuff related to dyncount.lisp has been made conditional
6151 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6152 smaller. The various dyncount-related symbols have been moved into
6153 a new "SB-DYNCOUNT" package.
6154 * tty-inspect.lisp has been renamed to inspect.lisp.
6155 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6156 feature has gone away. (When we eventually port to other flavors of
6157 libc and/or Unix, we'll try to make the differences between flavors
6158 invisible at the user level.)
6159 * Various other *FEATURES* tags, and/or their associated conditionals,
6160 have been removed if obsolescent, or given better documentation, or
6161 sometimes given more-mnemonic names.
6163 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6165 * tidied up "make.sh" script
6166 * tidied up system directory structure
6167 * better "clean.sh" behavior
6168 * added doc/FOR-CMUCL-DEVELOPERS
6169 * many many small tweaks to output format, e.g. removing possibly-confusing
6170 trailing #\. character in DESCRIBE-INSTANCE
6171 * (EQUALP #\A 'A) no longer signals an error.
6172 * new hashing code, including EQUALP hashing
6173 * tidied up Lisp initialization and toplevel
6174 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6175 * command line argument processing
6176 * added POSIX-GETENV function to deal with Unix-ish environment variables
6177 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6178 terminating SBCL on EOF
6179 * non-verbose GC by default
6180 * There is no more "sbcl" shell script; the sbcl file is now the C
6181 runtime executable (just like CMU CL).
6182 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6184 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6185 symbol and package information as Lisp native symbol and package objects
6186 instead of strings naming symbols and strings naming packages. This way,
6187 whenever packages are renamed (as in warm init), debug information is
6188 transformed along with everything else.
6189 * tweaked the optimization policy declarations which control the building
6190 of SBCL itself. Now, among other things, the system no longer saves
6191 source location debugging information. (This helps two problems at once
6192 by reducing SBCL size and by keeping SBCL from trying to look for its
6193 sources -- which may not exist -- when reporting errors.)
6194 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6195 debugging and testing purposes
6196 * cleaned up printing, making the printer call PRINT-OBJECT for
6197 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6198 methods, giving nearly-ANSI behavior
6199 * converted almost all special variables to use *FOO* naming convention
6200 * deleted PARSE-TIME functionality, since it can be done portably
6201 * moved some files out of cold init into warm init
6202 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6204 * regularized formatting of source files
6205 * added an install.sh script
6206 * fixed ridiculous memory usage of cross-compiler by making
6207 compiler/alloc.lisp not try to do pooling unless it can hook
6208 itself into the GC of the cross-compilation host. Now the system
6209 builds nicely on my old laptop.
6210 * added :SB-ALLOC in target-features.lisp-expr
6211 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6212 was not implemented)
6213 * re-did condition handling and note reporting in the compiler. Notes
6214 are no longer handled by signalling conditions. Style warnings
6215 and warnings are handled more correctly and reported in such a way
6216 that it's easy to find one or the other in your output (so that you
6217 can e.g. figure out which of many problems caused COMPILE-FILE to
6219 * changed the severity of several compiler warnings from full WARNING
6220 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6221 compiler note reporting so that it doesn't use the condition system
6222 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6223 COMPILE-FILE command)
6224 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6225 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6226 no longer supported, since their implementation was deeply intertwingled
6227 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6228 * removed bogus "support" for compiler macros named (SETF FOO), and
6229 removed the compiler macro for SETF INFO (but only after making a fool
6230 of myself on the cmucl-imp mailing list by posting a bogus patch for
6231 DEFINE-COMPILER-MACRO..)
6232 * Compiled files containing forms which have side effects on the Lisp
6233 reader (such as DEFPACKAGE forms) are now handled more correctly.
6234 (Compiler queuing of top level lambdas has been suppressed by setting
6235 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6236 * deleted various currently-unused source files, e.g. gengc.lisp. They
6237 may be added back at some point e.g. when porting to other architectures,
6238 but until they are it's distracting to distribute them and to try to
6240 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6241 there were so many of them they're just distractions, and UNCROSS is
6242 known to be able to handle the current sources
6243 * moved PROFILE functionality into TRACE, so that it will be clear
6244 how the wrapping and unwrapping of functions when you profile them
6245 interacts with the wrapping and unwrapping of functions when you
6246 trace them. (Actually, the functionality isn't there yet, but at least
6247 the interface specification is there. Hopefully, the functionality will
6248 arrive with some future maintenance release.)
6249 * removed host-oops.lisp
6250 * changed signature of QUIT function to allow UNIX-CODE argument
6251 * fixed READ-SEQUENCE bug
6252 * tweaked verbose GC output so that it looks more like the progress
6253 output that ANSI specifies for functions like LOAD
6254 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6255 * added <http://sbcl.sourceforge.com> to the banner information printed by