1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.52:
3 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
4 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
5 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
6 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
7 targets is now 63 bits (up from 61).
8 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
9 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
10 of multiple-valued places to be set to NIL, instead of signalling an
11 error (per a careful reading of CLHS 5.1.2.3).
13 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
14 * enhancement: ASDF has been updated to version 2.017.
15 * enhancement: the --core command line option now accepts binaries with
17 * enhancement: when built with :sb-core-compression, core files (regular
18 or executable) can be compressed with zlib. Use the :COMPRESSION
19 argument to SAVE-LISP-AND-DIE to specify a compression level.
20 * enhancement: --[no-]merge-core-pages determines whether the runtime
21 hints the operating system that identical core pages between SBCL
22 processes should share the same physical memory. Default is to only
23 enable this for compressed cores.
24 * optimization: SLEEP no longer conses.
25 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
26 or bit-vectors when using the standard pretty-print dispatch table.
27 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
29 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
30 AREF, CHAR, etc. (lp#826971)
31 * bug fix: compiler-errors causes by integer arguments with composed of
32 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
33 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
34 expressions. (lp#770184)
35 * bug fix: complex single float literals are correctly aligned when used
36 as arguments of arithmetic operators.
37 * bug fix: on 32-bit platforms, rounding of double floats larger than a
38 fixnum is correct. (reported by Peter Keller)
39 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
40 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
42 * bug fix: redefining classes such that slots with custom allocation are
43 added or removed works again.
45 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
46 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
47 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
48 MAKE-SOCKET-STREAM if using SERVE-EVENT.
49 * enhancement: added support for socket keepalive timeout intervals
50 and probe counts on Linux.
51 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
52 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
53 * enhancement: added new toplevel options --quit and --non-interactive
55 * enhancement: the Windows port of SBCL now builds and runs on Wine
56 (thanks to Anton Kovalenko).
57 * enhancement: more, and more correct, SSE instruction definitions on
58 x86-64 (thanks to Alexander Gavrilov).
59 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
60 to help the processor execute spin loops, when applicable. Currently
61 implemented for x86 and x86-64.
62 * optimization: unsigned integer divisions by a constant are implemented
63 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
64 * optimization: improved type-derivation for LOAD-TIME-VALUE.
65 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
66 instructions. (lp#814688)
67 * bug fix: COERCE to unfinalized extended sequence classes now works.
68 (reported by Jan Moringen; lp#815155)
69 * bug fix: a compiler error during typecheck generation, reported by Eric
71 * bug fix: obsolete instance protocol fires when shared slots are added
73 * bug fix: fixed-format floating point printing with scaling factors.
75 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
76 backtraces. (lp#818460)
77 * bug fix: better backtraces for interrupted syscall frames on x86.
79 * bug fix: SSE comparison instructions can be disassembled even when one
80 operand is in memory. (lp#814702)
81 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
82 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
83 type information associated with the VALUES form.
84 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
86 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
87 first write (lp#561642).
88 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
89 * bug fix: bound propagation involving conversion of large bignums to
90 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
92 * bug fix: &REST to &MORE conversion still works in unsafe call to known
93 functions; reported by Lutz Euler (lp#826459).
94 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
97 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
98 * enhancement: errors from FD handlers now provide a restart to remove
99 the offending handler.
100 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
102 * enhancement: location of user or system initialization file can now easily
103 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
104 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
105 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
106 the thunk, as a keyword argument, :arguments.
107 * enhancement: constraint propagation is simplified (and sped up) when
108 COMPILATION-SPEED > SPEED.
109 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
110 * enhancement: debugger understands &MORE arguments better.
111 * optimization: extracting bits of a single-float on x86-64 has been
112 optimized. (lp#555201)
113 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
114 when (> SPEED SPACE).
115 * optimization: local call trampolines (x86 and x86-64) are emitted
117 * optimization: implicit value cells for dynamic-extent closed-over bindings
118 on x86 and x86-64 can hold unboxed values as well.
119 * meta-optimization: improved compilation speed, especially for large
120 functions. (lp#792363 and lp#394206)
121 * bug fix: bound derivation for floating point operations is now more
122 careful about rounding possibly closing open bounds. (lp#793771)
123 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
124 backwards incompatible change in 1.0.48.27)
125 * bug fix: occasional debugger errors in when a type-error occured in a
126 function with dynamic-extent &rest list.
127 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
128 boa-construtors can be used to initialized structure slots.
129 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
130 (lp#795705, regression)
131 * bug fix: DIRECTORY works better on logical pathnames.
132 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
133 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
134 * bug fix: the compiler no longer constant-folds NaNs in
135 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
136 * bug fix: FORMAT now handles floating point rounding correct, eg.
137 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
139 * bug fix: style warning during lambda-list introspection of generic
140 functions with both optional and key argments.
141 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
143 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
146 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
147 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
148 interrupts for its body.
149 * enhancement: source locations are now available for files loaded as
150 source, compile-time-too evaluation, and initialization files.
151 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
152 virtual source-file information, eg. overriding input-file of COMPILE-FILE
153 when a temporary file is used for compilation.
154 * enhancement: ASDF has been updated to version 2.015.3.
155 * enhancement: backtraces involving frames from the default evaluator are
157 * enhancement: RUN-PROGRAM works with user-defined binary input and output
159 * enhancement: more informative compile-time warnings and runtime errors for
160 type-errors detected at compile-time.
161 * enhancement: deadlock detection for mutexes and spinlocks.
162 * enhancement: dynamic-extent for &rest lists stack allocate only their
163 spines, not their argumets. While portable code should not rely on this,
164 particularly in combination with inlining, it should make dynamic-extent
165 easier to use safely.
166 * enhancement: SB-POSIX improvements:
167 ** WNOHANG and WUNTRACED are exported.
168 ** SYSCALL-ERROR now also provides the name of the failing system call.
169 * enhancement: --script improvements:
170 ** errors on standard input, output, and error streams are handled and
171 cause scripts to exit silently, making them easier to use in shell
173 ** backtraces from scripts now go to standard error instead of the
174 terminal even if one is available.
175 ** --script can be an argument, causing the script to be loaded from
177 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
178 strings to foreign memory.
179 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
180 a file, making it easier to understand heap dynamics.
181 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
182 allows the compiler to automatically elide rest-list allocation so long as
183 the call sites are in functions that the compiler knows cannot escape.
185 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
186 especially in safe code when none of the required arguments have changed
188 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
189 uninterruptible, as well as blocking reads from socket streams created
190 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
191 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
192 from the to-char if the from-char is not a dispatch-macro character.
193 * bug fix: references to undefined variables in function calls that are
194 optimized away now signal a runtime error. (lp#722734)
195 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
196 types from a function defined in the same file. (regression from
198 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
200 * bug fix: spurious errors during QUIT when standard streams were closed.
202 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
203 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
204 years, is now no longer supported.
205 * enhancement: read() and write() have been added to SB-POSIX.
206 * enhancement: types of DEFSTRUCT constructors are proclaimed more
207 accurately, allowing better typechecking of call-sites.
208 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
209 are no longer caught. (reverted to pre 1.0.34 behaviour)
210 * optimization: slightly faster ISQRT. (lp#713343)
211 * bug fix: better support for Solaris /bin/sh in sh-based tests.
212 * bug fix: TRACE behaves better when attempting to trace undefined
213 functions. (lp#740717)
214 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
215 to (FUNCALL #'(LAMBDA ...) ...).
216 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
217 a compile-time error. (lp#720382)
218 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
220 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
221 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
222 optimization. (regression from 1.0.45.18/1.0.46.15)
223 * bug fix: package locks did not protects against compile-time side-effects
224 of DEFUN. (lp#675584)
225 * bug fix: --dynamic-space-size argument is validated more carefully.
227 * bug fix: memory fault from printing a malformed simple-condition.
229 * bug fix: redefining classes so that slot-definition classes change now
230 engages the obsolete instance protocol. (lp#766271)
231 * bug fix: constant improper lists could break source coverage recording.
233 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
236 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
237 * bug fix: fix mach port rights leaks in mach exception handling code on
238 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
240 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
241 * enhancement: redefinition warnings for macros from different files. (lp#434657)
242 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
243 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
244 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
245 processed using EVAL -- now the appropriate toplevel form is reported instead.
246 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
247 declarations. (lp#726331)
248 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
249 that NIL/NULL is excluded from the type.
250 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
252 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
254 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
255 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
256 stack-allocated values out of their dynamic-extent. (lp#310175)
257 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
258 x86-64 builds caused a type-error.
259 * bug fix: calling COMPILE with something else than a lambda-expression as the
260 second argument reports a more sensible error. (lp#718905)
261 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
262 are detected. (lp#520607)
263 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
265 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
266 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
267 methods. (regression from 1.0.45.18)
268 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
269 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
270 * bug fix: several foreign functions accepting string also accepted NIL and
271 consequently caused a memory fault at 0 now signal a type-error instead.
273 * bug fix: under rare circumstances, constraint propagation could rewrite a
274 variable reference to refer to a variable not in scope, causing an error
275 during physical environment analysis when attempting to close over the
276 variable. (lp#551227)
277 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
279 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
280 * enhancement: largefile support on Solaris.
281 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
282 arguments (lp#710017)
283 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
284 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
286 * optimization: ERROR and CERROR are approximately 5 times faster.
287 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
288 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
289 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
290 up instance creation in those cases.
291 * optimization: arithmetic operations with multiple constant arguments in now
292 have them reduced at compile-time. (lp#676414)
293 * optimization: determining current character position on string-streams for
294 pretty-printing was overly slow.
295 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
296 lifetime analysis to overwrite closed-over variables (lp#681092).
297 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
298 were not handled correctly (lp#713063).
299 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
301 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
302 mistake. (lp#667297).
303 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
304 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
305 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
306 unintern the wrong symbol with the same name. (lp#693796)
307 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
308 making it possible to restore the initial table if it has been messed up.
311 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
312 * enhancement: ~/ and ~user/ are treated specially in pathnames.
313 Refer to documentation for details.
314 * enhancement: ASDF has been updated to version 2.010.
315 * optimization: mutated closed-over variables that are only accessed by
316 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
317 declared to be DYNAMIC-EXTENT) are stored directly in their containing
318 stack frame, rather than allocating a VALUE-CELL (lp#586103).
319 * optimization: UNWIND-PROTECT cleanup functions are now declared
321 * bug fix: backtracing function with &REST arguments now shows the full
322 argument list. (lp#310173)
323 * bug fix: return types for functions with complex lambda-lists are now
324 derived properly (lp#384892)
325 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
326 long string arguments slowed the compiler down to a crawl.
327 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
328 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
329 in the DEFMETHOD body.
330 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
331 messages, being instead replaced with the corresponding function name.
332 * bug fix: don't derive overly complex unions of numeric types for arithmetic
333 operators. (lp#309448)
335 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
336 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
337 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
338 * enhancement: ALLOCATION-INFORMATION also provides the page the object
340 * enhancement: default dynamic-space size can be configured at build-time
341 without touching source, using the --dynamic-space-size argument to make.sh.
342 * enhancement: DESCRIBE recognizes symbols naming optimization policy
343 qualities, and mentions ALWAYS-BOUND declarations.
344 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
346 * enhancement: ASDF has been updated to 2.009.
347 * enhancement: the system detects known type-erros in calls better,
348 signalling a full warning about violated proclaimed FTYPEs and violations
349 of derived FTYPEs within the same file, including self-calls.
350 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
351 * optimization: constant-folding exploits numeric and character types, in
352 addition member types.
353 * optimization: numeric, character and member types that are inhabited by
354 exactly one value are tested with EQL.
355 * optimization: more conditional branches are eliminated during IR1.
356 Branches are simplified before performing if/if-conversion, and simple
357 equivalent branches (that only read the same constant or variable) are
359 * improvements to the Windows port:
360 ** change: canonical unparsing form for pathname namestrings now uses / as
361 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
362 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
363 on Windows. (thanks to Kalyanov Dmitry)
364 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
366 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
367 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
368 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
369 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
371 * bug fix: interrupts arriving during CL:OPEN caused an error.
372 * bug fix: overeager character buffering could cause input to block
373 spuriously when reading from a pipe (lp#643686)
374 * bug fix: more efficient timer expiry should avoid starvation on systems
375 where number of SIGALRMs per second is restricted. (lp#375515)
376 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
377 * bug fix: compile-times no longer scale linearly with the size of
378 quoted lists in source-code. (lp#654289)
379 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
380 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
381 so badly. (lp#654485)
382 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
383 an error for eg. STRUCTURE. (lp#458015)
384 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
385 (lp#613871, thanks to Roman Marynchak)
386 * bug fix: more reliable &REST list type derivation. (lp#655203)
387 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
388 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
389 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
390 also declared NOTINLINE. (lp#655581)
391 * bug fix: the compiler could attempt to emit constant left shifts of
392 greater value than n-word-bits. (lp#309063)
393 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
394 type information for the function being set. (lp#659220)
395 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
396 containing self-calls were recompiled with a new signature, and failed
397 to warn when a self-call using the old signature was left in. (lp#655126)
398 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
399 :DEFAULT when the default external had character size other than 8 bits.
401 * bug fix: derived types of functions in the same file were implicitly
402 trusted, leading to potential heap corruption when those function were
403 defined incompatibly. (lp#657499)
404 * bug fix: existing ASDF source registries are ignored when building
406 * bug fix: short-form DEFSETF checks that the second argument is a symbol
407 (lp#655824, thanks to Roman Marynchak)
408 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
409 package-lock violation was detected. (lp#660752)
410 * bug fix: the system can store different docstrings for a single function
411 under different names. (lp#661631, regression from 1.0.29.24)
412 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
413 properly. (lp#384801)
414 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
415 of specified length could confuse the type derivation in unsafe code.
417 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
418 fork with multiple Lisp threads running is made on every platform,
419 not just Darwin. (lp#451111)
420 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
421 around when core was saved, which could cause undefined behaviour when the
423 * bug fix: Allow UNTRACE of functions that are no longer defined
424 (lp#667657, thanks to Attila Lendvai)
425 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
426 compile-time warning (lp#664373, thanks to Stas Boukarev)
428 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
429 * incompatible change: FD-STREAMS no longer participate in the serve-event
430 event-loop by default. (lp#316072)
431 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
432 affects streams from CL:OPEN.
433 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
434 default, but this is liable to change: applications needing serve-event
435 for socket streams should explicitly request it using :SERVE-EVENTS T
437 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
439 * enhancement: CLOS effective method functions and defclass slot typechecking
440 function now have debug names for use in backtraces and profiles.
441 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
443 * enhancement: symbols are printed using fully qualified names in several
444 error and warning messages which are often associated with package
445 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
446 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
447 thanks to Andrew Golding)
448 * bug fix: reading /proc files on Linux works. (lp#425199)
449 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
451 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
452 breaking code that tried to write the value of a printer control variable.
453 (lp#581564, thanks to Stas Boukarev)
454 * bug fix: WRITE compiler macro did not handle output stream designators
455 correctly. (lp#598374, thanks to Stas Boukarev)
456 * bug fix: better availability of names of foreign functions in backtraces
457 on Linux. (lp#626962, thanks to Stas Boukarev)
458 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
459 lp#627581, thanks to Josh Elsasser and Jim Wise)
460 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
461 thanks to Josh Elsasser)
462 * bug fix: using aliases for builtin classes as defmethod specializers
463 without adding DEFTYPEs for them works. (lp#618387)
464 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
466 * bug fix: legally dynamic-extent lists and vectors used as
467 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
468 * bug fix: inline-expansion creating references to dead lambda-variables
469 (lp#454681, thanks to Alexey Dejneka)
470 * bug fix: better error message for bogus numerical arguments to RANDOM.
471 (lp#598986, thanks to Stas Boukarev)
472 * bug fix: the compiler occasionally inlined references from incompatible
473 environments occurs. (lp#308951)
474 * bug fix: the compiler threw an error when trying to compile a local
475 function (labels or flet) known to take a specialized complex argument.
476 (not in launchpad, reported by sykopomp in #lispgames)
477 * bug fix: package-locks failed to protect against compile-time effects of
478 DEFUN when the symbol previously had a macro definition. (lp#576637)
479 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
480 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
481 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
482 * bug fix: evaluation in debugger REPL works using the global context when
483 in frames that do not have sufficient debug information.
484 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
486 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
488 * bug fix: interrupt taking longer than the requested period caused SLEEP
489 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
491 changes in sbcl-1.0.42 relative to sbcl-1.0.41
493 ** Cross-compilation host is now specified to make.sh using
494 command-line argument --xc-host=<command> instead of a positional
495 argument. (thanks to Daniel Herring)
496 ** Install location can be specified to make.sh using command-line
497 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
498 * optimization: The default implementation of
499 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
500 * enhancement: Explicit memory barrier operations are now available for use
501 by multithreaded code. See documentation for details.
502 * enhancement: Experimental support for threading on Linux/PPC.
503 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
504 * bug fix: EXPT signals an error if first argument is a zero and second
505 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
506 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
507 (lp#576594, thanks to Roman Marynchak)
508 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
509 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
511 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
512 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
513 cached, leading to many fewer expensive calls to
514 COMPUTE-APPLICABLE-METHODS.
515 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
516 CLASS argument, search for and call an appropriate optimized ctor function
518 * bug fix: WRITE always returns the correct value.
520 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
521 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
522 * bug fix: Name conflicts between symbols passed as arguments to a single
523 call to IMPORT no longer add multiple symbols with the same name to the
524 package (detectable via DO-SYMBOLS).
525 * bug fix: support building without the dlshim on darwin x86 and x86-64
527 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
529 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
530 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
532 * bug fix: linkage-table entries on PPC now no longer overflow their
533 space allocation (potentially causing crashes if they are written out
535 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
536 platforms, preventing the GC from seeing stale pointers on the control
537 stack in subsequent GCs (which would, and does, break invariants).
538 * bug fix: 32-bit unicode external formats now work on big-endian systems.
539 * bug fix: Literal characters with code points greater than about 32767
540 now work on PPC UNICODE builds.
541 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
542 high order bits are explicitly cleared out. In some contrived situations,
543 this could lead to wrong results in mixed real/complex float arithmetic.
544 * bug fix: Fix function/macro redefinition warnings when building with
545 clisp. (lp#576787, thanks to Josh Elsasser)
546 * new platform: experimental support for ppc/openbsd (thanks to Josh
548 * bug fix: Floating-point traps now work on ppc/linux.
550 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
551 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
552 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
553 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
554 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
555 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
556 SB-THREAD:GRAB-MUTEX.
557 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
558 contain additional data structures and tools for concurrent programming;
559 at the moment it contains a lock-free queue, and a lock-free mailbox
561 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
562 GET-MUTEX but takes &key rather than &optional parameters. Also added
563 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
565 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
566 SB-THREAD:WAIT-ON-SEMAPHORE.
567 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
569 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
570 conditions to defer the deadline for forever.
571 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
573 * enhancement: errors from NO-APPLICABLE-METHOD and
574 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
575 generic function call.
576 * enhancement: SB-BSD-SOCKET improvements
577 ** sockets and socket streams now have a more informative printed
578 representation based on the corresponding SOCKET-NAME and
580 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
582 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
583 CL:CLOSE when appropriate, and no longer disassociates the stream
584 from the socket if close failed. (lp#543951)
585 * improvements to the instrumenting profiler
586 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
587 ** optimization: counters no longer use locks for the overflow mode.
588 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
589 incurred an off-by-one miscount.
590 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
591 * enhancement: improved DEFMETHOD pretty-printing.
592 * enhancement: perform range reduction when arguments are too large for
593 x87's transcendentals (instead of returning 0). (lp#327192)
594 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
595 some of CL-PPCRE's macros. (lp#570079)
596 * enhancement: our machine code is slightly less hostile to valgrind on
598 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
599 to Robert Swindells and Aleksej Saushev)
600 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
601 * bug fix: a rare case of startup-time page table corruption.
602 * bug fix: a semaphore with multiple waiters and some of them unwinding due
603 to timeouts could be left in an inconsistent state.
604 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
605 * bug fix: misoptimization of multiplication by one in
606 (SB-C::FLOAT-ACCURACY 0) policies.
607 * bug fix: miscounts in SB-PROFILE.
608 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
609 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
610 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
611 up itself" (March 2010) for further details.
612 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
613 against length of the list if the element is found before the specified
614 END is reached. (thanks to Alec Berryman, lp#554385)
615 * bug fix: errors signalled during package graph modification no longer
616 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
617 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
618 :SB-DOC feature. (lp#552564)
619 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
620 * bug fix: more robust runtime executable path detection. (lp#375549)
621 * bug fix: GCD always returns positive values. (lp#413680)
622 * bug fix: Converting division to multiplication by reciprocal handles
624 * bug fix: We were too eager in eliding range reduction tests on x87.
625 The maximal magnitude is 2^63, not 2^64.
626 * bug fix: Transforms for TRUNCATE don't die when the result is completely
628 * bug fix: Maybe restore buildability on Alpha.
629 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
631 * bug fix: RANDOM-STATE can be printed readably again.
632 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
633 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
634 types) could result in type mismatches during compilation.
636 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
637 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
638 stack frame thrown from.
639 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
640 compiler optimization qualities inside dynamic extent of its body.
641 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
642 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
644 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
645 constraint propgation, allowing better compilation eg. when used to
646 access structures with WITH-SLOTS. (lp#520366)
647 * optimization: the compiler is now more aware of the type of the underlying
648 storage vector for multidimensional simple arrays resulting in better code
649 for accessing such arrays.
650 * optimization: passing NIL as the environment argument to TYPEP no longer
651 inhibits optimizing it. (lp#309788)
652 * optimization: more efficient register usage when handling single-float
653 arguments on x86-64. (thanks to Lutz Euler)
654 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
655 pre-allocated temporary vectors. (lp#496249)
656 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
657 in :INITIAL-CONTENTS. (lp#523612)
658 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
659 functions. (lp#524707)
660 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
661 WITH-SLOTS usages during compilation.
662 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
663 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
664 all x86oid platforms with :UD2-BREAKPOINTS target feature.
665 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
666 instruction (tested on x86oid linux with ud2-breakpoints).
667 * bug fix: slam.sh now works on win32.
668 * bug fix: better differences of numeric types. (lp#309124)
669 * bug fix: arrays declared intersection and union types can have their
670 upgraded element type derived. (lp#316078)
671 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
672 threads started during profiling. (lp#472499)
673 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
675 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
676 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
677 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
678 values instead of signaling an error. (lp#309093)
679 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
681 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
682 declarations (lp#497321)
683 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
684 and failed to detect circular lists (lp#452008)
685 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
687 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
688 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
689 due to it, so that handlers can run.
690 * bug fix: reparsing undefined types if they have become defined since
692 * bug fix: missing &REST type in a proclamation for a function with both
693 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
694 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
695 expanded calls (lp#542174)
696 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
697 than just at toplevel form.
699 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
700 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
701 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
702 but work on type specifiers.
703 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
704 to name a type specifier.
705 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
706 specifier is valid where "valid" basically means "would be accepted as
707 second argument of TYPEP".
708 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
709 returns the function's declared, or derived FTYPE.
710 * new feature: SB-POSIX now supports accessing the d_ino member of
711 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
712 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
713 provide for seeding a RANDOM-STATE object with user-provided data or
714 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
715 attempt to initialize the returned state from the operating system's
716 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
717 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
718 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
719 * bug fix: Fix grammar and style issues for the docstrings of
720 printer-related variables and functions. (Thanks to mon_key; launchpad
722 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
724 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
725 in a row even though a handler defered the deadline long into the
727 * bug fix: A deadline handler was run without interrupts enabled for a
728 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
729 in infinitely spinning, non-killable threads.
730 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
731 before reaching the erring stack frame.
732 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
733 real power. (launchpad bug lp#525949)
734 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
735 GENCGC platforms. (launchpad bug lp#529014)
736 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
737 (launchpad bug lp#525916)
738 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
739 (Thanks to Robert Goldman)
741 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
742 * optimization: ROUND with a single single-float or double-float argument
743 is properly inlined when possible.
744 * optimization: Slightly better code is generated for integer<->float
745 conversions and for single-float<->double-float conversions on x86-64.
746 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
747 code for 32-bit and 64-bit rotations on x86-64.
748 * bug fix: The install script changes the ownership of directories as well
749 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
750 launchpad bug lp#508485)
751 * bug fix: TRUNCATE with a single single-float or double-float argument is
752 properly inlined when possible. (launchpad bug lp#489388)
753 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
754 no longer causes a compiler error on x86 and ppc.
755 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
756 always relative to *READTABLE* rather than the passed argument.
758 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
759 * minor incompatible change: threading support is now enabled by default
761 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
763 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
764 are now caught and reported just like errors during macroexpansion.
765 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
766 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
767 * enhancement: ASDF systems can now depends on SB-QUEUE.
768 * fixes and improvements related to Unicode and external formats:
769 ** bug fix: error handling and restart usage in the ucs-2 external format
771 ** there is now an implementation of the ucs-4 external format.
772 ** the utf-16 and utf-32 external formats are supported.
773 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
774 in the environment. setenv() and unsetenv() are also provided. (reported by
775 Fare Rideau; launchpad bug lp#460455)
776 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
777 loading. This ensures sensible errors for .FASL files from other
778 implementations on case-insensitive filesystems. (reported by Willem
779 Broekema; launchpad bug lp#489417)
780 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
781 Willem Broekema; launchpad bug lp#489698).
782 * bug fix: some minor code rearrangements to reenable warning-free building
783 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
784 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
786 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
789 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
790 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
791 * improvement: support O_LARGEFILE access to files larger than 2GB on
792 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
793 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
794 definitions for methods specializing on the passed class itself.
795 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
796 definitions for methods specializing on the passed class itself, or on
798 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
799 about itself during the build (e.g. for M-? in Slime), if this flag is
800 enabled in customize-target-features.lisp. This will increase the core
801 size by about 5-6mb, though, so it's mostly interesting to SBCL
803 * new feature: various GENCGC tuning parameters have been experimentally
804 documented and exported from SB-EXT. See documentation for details.
805 * fixes and improvements related to Unicode and external formats:
806 ** the Unicode character database has been upgraded to the
807 Unicode 5.2 standard, giving names and properties to a number of new
808 characters, and providing a few extra characters with case
810 ** improvement: restarts for providing replacement input/output on coding
811 errors for fd-stream external formats.
812 ** improvement: where :<encoding> is a keyword corresponding to an
813 external format the system supports, it is now possible to specify
814 (:<encoding> :replacement <character>) as an external format which will
815 automatically substitute <character> on encoding or decoding errors for
816 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
818 ** improvement: the file streams underlying the standard streams (such as
819 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
820 which uses the replacement mechanism to handle encoding errors,
821 preventing various infinite error chains and unrecoverable I/O
823 ** minor incompatible change: the utf-8 external format now correctly
824 refuses to encode Lisp characters in the surrogate range (char-codes
825 between #xd800 and #xdfff).
826 ** fix a typo preventing conversion of strings into octet vectors
827 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
829 ** fix a bug in the octet multibyte handling of decoding errors and the
830 USE-VALUE restart. (launchpad bug lp#314939)
831 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
832 restart on fd-stream decoding errors.
833 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
834 error is near the end of file.
835 ** fix a double-error case in unibyte octet conversions, when the first
836 use of USE-VALUE is ignored.
837 ** fix bugs in handling of undefined code points in unibyte encodings.
838 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
839 streams after an UNREAD-CHAR.
840 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
841 object is allocated in a boxed region of dynamic space.
842 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
843 fork with multiple Lisp threads running is made, instead of going
844 ahead with unpredictable consequences. (reported by Leslie Polzer)
845 * bug fix: uses of slot accessors on specialized method parameters within
846 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
847 error while finalizing the class. This fix may cause classes with slot
848 accessors to be finalized later than previously. (reported by Lars Rune
849 Nøstdal; launchpad bug lp#473699)
850 * bug fix: restore buildability on the MIPS platform. (regression from
851 1.0.30.38, reported by Samium Gromoff)
852 * bug fix: inspecting closures is less likely to fail with a type error.
853 * bug fix: no timer starvation when setting the system clock back.
854 (launchpad bug lp#460283)
855 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
856 standard pprint dispatch table as specified by CLHS.
857 * bug fix: give CLISP a hint about a type declaration to enable it to build
858 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
860 * bug fix: correctly dump literal objects in defaulting forms of arglists.
861 (reported by Attila Lendvai; launchpad bug lp#310132)
862 * bug fix: distinguish in type specifiers between arrays that might be
863 complex and arrays that are definitely complex. (launchpad bug lp#309129)
864 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
865 type. (reported by Levente Mészáros; launchpad bug lp#485972)
866 * bug fix: setting the value of a symbol-macro within a method in the
867 presence of type declarations works properly again. (reported by Iban
868 Hatchondo; launchpad bug lp#485019)
870 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
871 * optimization: faster FIND and POSITION on strings of unknown element type
872 in high SPEED policies. (thanks to Karol Swietlicki)
873 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
875 * improvement: better error signalling for bogus parameter specializer names
876 in DEFMETHOD forms (reported by Pluijzer)
877 * bug fix: DELETE-FILE once again works on logical pathnames (regression
879 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
881 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
882 removes previous default initargs (reported by Lars Rune Nøstdal and
884 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
885 lambda-lists. (reported by Peter Seibel)
886 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
887 correctly when starting from an executable core without saved runtime
888 options (reported by Faré Rideau, thanks to Zach Beane)
889 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
890 an optimization note instead. (reported by Martin Cracauer)
891 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
892 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
893 new process group if it doesn't need to share stdin with the sbcl
894 process. (thanks to Leslie Polzer)
895 * bug fix: SATISFIES could be misoptimized to refer to a local function.
896 (reported by Stanislaw Halik)
898 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
899 * improvement: stack allocation is should now be possible in all nested
900 inlining cases: failure to stack allocate when equivalent code is manually
901 open coded is now considered a bug.
902 * improvements related to Unicode:
903 ** the Unicode character database has been upgraded to the
904 Unicode 5.1 standard, giving names and properties to a number of new
905 characters, and providing a few extra characters with case
907 ** the system now recognizes and produces names for Unicode Hangul
909 ** the EBCDIC-US external-format is now supported for octet operations
910 (as well as for stream operations).
911 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
912 be used to output toplevel compile-time effects into a separate .CFASL
914 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
915 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
917 * optimization: TRUNCATE on known single- and double-floats is upto 25%
919 * optimization: division of floating point numbers by constants uses
920 multiplication by reciprocal when an exact reciprocal exists.
921 * optimization: multiplication of single- and double-floats floats by
922 constant two has been optimized.
923 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
924 sufficient type information is available. (thanks to Leslie Polzer)
925 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
926 known structure objects are as efficient as defstruct generated accessors.
927 * optimization: unused vector creation can now be optimized away.
928 * improvement: ASDF systems can now depends on SB-INTROSPECT.
929 * improvement: a STYLE-WARNING is signalled when a generic function
930 clobbers an earlier FTYPE proclamation.
931 * improvement: the compiler is able to track the effective type of
932 generic function across method addition and removal even in the
933 absence of an explicit DEFGENERIC.
934 * improvement: DESCRIBE now reports on symbols naming undefined
935 but assumed or declared function as well.
936 * improvement: recompilation of systems using SB-GROVEL now works
937 (thanks to Leslie Polzer)
938 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
939 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
941 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
942 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
943 well as user defined declaration names.
944 ** VARIABLE-INFORMATION is now aware of alien variables.
945 * improvement: improved address space layout on OpenBSD (thanks to Josh
947 * improvement: pretty-printing of various Lisp forms has been improved
948 (thanks to Tobias Rittweiler)
949 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
950 unused were deleted in safe code. (reported by John Fremlin)
951 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
953 * bug fix: some out-of-line array predicates were missing (reported by
955 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
957 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
958 (thanks to Larry D'Anna)
959 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
960 as well. (reported by Josh Elsasser)
961 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
962 leading to possible attempts to delete the same file twice. See docstring
963 on DELETE-FILE for details. (reported by John Fremlin)
964 * bug fix: DELETE-FILE once again deletes the file named by the pathname
965 designator argument, rather than its truename. (reported by Luis
967 * bug fix: the low-level debugger had 32-bit assumptions and was missing
968 information about some array types. (thanks to Luis Oliveira)
969 * bug fix: moderately complex combinations of inline expansions could
970 be miscompiled if the result was declared to be dynamic extent.
971 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
972 form (+ <variable> <integer>) were miscompiled under certain
974 * bug fix: in some cases no compiler note about failure to stack allocate
975 was emitted, even if the objects were in fact heap allocated.
976 * bug fix: minor violation of "otherwise inaccessible" rule for stack
977 allocation could cause objects users might reasonably expect to
978 be heap allocated to be stack allocated.
979 * bug fix: DESCRIBE signalled an error for generic functions under
980 certain circumstances. (thanks to Leslie Polzer)
981 * bug fix: Fixed spelling of an error message.
983 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
984 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
985 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
986 of SB-THREAD:THREAD-ERROR-THREAD.
987 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
988 * new feature: docstrings for local and anonymous functions are no longer
989 discarded. (thanks to Leslie Polzer)
990 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
991 values in other threads.
992 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
993 about object allocation.
994 * optimization: division of a real float by a complex float is implemented
995 with a specialised code sequence.
996 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
997 keywords is an order of magnitude faster.
998 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
999 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1000 methods, and similarly for non-standard metaclass classes as long as there
1001 are no methods additional on MAKE-INSTANCE.
1002 * optimization: more efficient type-checks for FIXNUMs when the value
1003 is known to be a signed word on x86 and x86-64.
1004 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1005 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1007 * optimization: compiler is smarter about delegating argument type checks to
1009 * optimization: several character functions are now compiled somewhat more
1010 efficiently. (reported by Lynn Quam)
1011 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1012 * improvement: less unsafe constant folding in floating point arithmetic,
1013 especially for mixed complex/real -float operations.
1014 * optimization: constant double and single floats are stored in native
1015 unboxed format on x86[-64].
1016 * optimization: smarter code for arithmetic operations with constant floats,
1017 complex floats, or integers on x86[-64].
1018 * optimization: smarter code for conjugate/multiplication of float complexes
1019 and abs/negate of floats on x86-64.
1020 * optimization: more efficient complex float and real float operations on
1022 * improvement: complex float division is slightly more stable.
1023 * improvement: DESCRIBE output has been reworked to be easier to read and
1024 contains more pertinent information.
1025 * improvement: failure to provide requested stack allocation compiler notes
1026 provided in all cases (requested stack allocation not happening without a
1027 note being issued is now considered a bug.)
1028 * bug fix: SB-POSIX exports the documented types and functions
1029 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1030 types. (reported by "abhi")
1031 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1032 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1033 (thanks to Paul Khuong)
1034 * bug fix: looping around HANDLER-CASE could silently consume stack space
1035 on each iteration. (reported by "foobar")
1036 * bug fix: better error signalling when calls to functions seeking elements
1037 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1038 (reported by Tobias Rittweiler)
1039 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1040 directory components now works as it used to. (various prolems reported by
1041 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1042 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1043 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1044 * bug fix: bogus undefined variable warnings from fopcompiled references to
1045 global variables. (thanks to Lars Rune Nøstdal)
1046 * bug fix: foreign function names should now appear in backtraces on
1047 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1048 * bug fix: SETF compiler macro documentation strings are not discarded
1050 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1051 (thanks to Alex Plotnick)
1052 * bug fix: SLEEP accepts large integer arguments, truncating them to
1053 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1054 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1055 * bug fix: compiler notes for expensive slot type checks could be emitted
1056 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1058 changes in sbcl-1.0.29 relative to 1.0.28:
1059 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1060 https://bugs.launchpad.net/sbcl
1061 Bugs can be reported directly there, or by sending email to
1062 sbcl-bugs@lists.sourceforge.net
1063 (no subscription required.)
1064 * minor incompatible change: under weak type checking policy integer
1065 types are weakened less aggressively.
1066 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1067 allowed to return, which causes SBCL to quit with exit status 0. Previously
1068 if the function returned with a small integer return value, that value
1069 was accidentally reused as the exit status.
1070 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1071 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1072 :HASH-FUNCTION argument. Refer to user manual for details.
1073 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1075 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1076 microseconds since the Unix epoch on all platforms.
1077 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1078 allows the compiler to safely elide boundedness checks for special
1080 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1081 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1082 efficiency measure for threaded platforms, but also valueable in
1084 * new feature: UNC pathnames are now understood by the system on Windows.
1085 * optimization: the compiler uses a specialized version of FILL when the
1086 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1088 * optimization: accesses to potentially non-simple arrays where element type
1089 is known are 50% faster.
1090 * optimization: compiler now generates faster array typechecking code.
1091 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1093 * optimization: multidimensional array accesses in the absence of type
1094 information regarding array rank are approximately 10% faster due to
1095 open coding of ARRAY-RANK.
1096 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1097 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1099 * optimization: result of call to VECTOR can now be stack allocated.
1100 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1101 as long as the resulting array is one-dimensional and has a known
1102 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1103 length of the list matches the known length of the vector does not
1104 allocate the list as an intermediate step. Ditto for VECTOR and simple
1106 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1107 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1108 known element type, and is known to be simple and one dimensional.
1109 * improvement: SBCL now emits a compiler note where stack allocation was
1110 requested but could not be provided (not in all cases, unfortunately)
1111 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1112 * improvement: pretty-printing loop has been implemented properly. (thanks
1113 to Tobias Rittweiler)
1114 * documentation: CLOS slot typechecing policy has been documented.
1115 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1116 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1117 pointer, leading to memory faults. (thanks to Bart Botta)
1118 * bug fix: better floating point exception handling on x86/OpenBSD.
1119 (thanks to Josh Elsasser)
1120 * bug fix: exit status from QUIT when called under --script was lost
1121 (reported by Hubert Kauker)
1122 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1123 same implementation of FILL to initialize the array, even if a more
1124 efficient one was available (reported by Stas Boukarev, thanks to
1126 * bug fix: potential miscompilation of array stack allocation on x86 and
1127 x86-64. (reported by Time Tossavainen)
1128 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1129 result in their subforms being treated as top level forms. (reported by
1131 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1132 than a machine register could leave garbage in the high bits of the
1133 result register (bug 316325).
1134 * bug fix: disable address space randomization Linux/x86-64 as well,
1135 not just x86-64. (reported by Ken Olum)
1136 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1137 generate incorrect code.
1138 * bug fix: #201; type inference for CONS and ARRAY types could derive
1139 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1140 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1141 could not be assigned to or bound with PROGV. (reported by Lorenz
1143 * bug fix: the value of CL:- in the inspector was the previous expression
1144 evaluated rather than the expression being evaluated.
1145 * bug fix: constants can no longer be locally declared special.
1146 * bug fix: signals delivered to threads started from foreign land (read:
1147 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1148 thread by blocking all signals and resignalling.
1149 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1150 from :INITFORM, if any.
1152 changes in sbcl-1.0.28 relative to 1.0.27:
1153 * a number of bugs in cross-compilation have been fixed, with the ultimate
1154 result that building under (at least) clisp should be much more reliable.
1155 * minor incompatible changes: echo-streams now propagate unread-char to the
1156 underlying input stream, and no longer permit unreading more than one
1158 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1159 frames, allowing for instance more reliable backtraces.
1160 * improvement: the debugger REPL can now reference lexical variables
1161 by name directly for code compiled with (DEBUG 3).
1162 * improvement: errors from malformed declarations now have better source
1163 paths associated with them. (thanks to Tobias Rittweiler)
1164 * optimization: faster local calls on x86/x86-64
1165 * bug fix: some error messages for out-of-bound array indexes confused the
1166 index and the bound. (thanks to Stas Boukarev)
1167 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1169 * bug fix: running regressions tests in shells without OSTYPE set now works.
1170 (reported by Harald Hanche-Olsen)
1171 * bug fix: more robust static space exhaustion signalling from
1172 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1173 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1174 docstring away instead of storing it under names such as (LAMBDA (X)).
1175 (reported by Leslie Polzer)
1176 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1177 (thanks to Ole Arndt for the patch)
1178 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1179 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1180 potentially-invalid effective methods in its cache.
1181 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1182 instances as well (thanks to Paul Khuong)
1183 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1184 SB-POSIX:WAITPID and their C equivalents.
1185 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1187 changes in sbcl-1.0.27 relative to 1.0.26:
1188 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1189 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1190 * improvement: the system either recovers from stack exhaustion or dies
1191 properly as opposed to leaving the user uncertain of whether the handler
1192 trampled on some random memory next to the stack or having to rely on
1193 --lose-on-corruption (which is still a good idea to use in production
1194 because stack exhaustion can happen in signal handlers which will likely
1196 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1197 1.0.25.37, reported by Harald Hanche-Olsen)
1198 * bug fix: work around signal delivery bug in darwin (regression from
1199 1.0.25.44, reported by Sidney Markowitz)
1200 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1202 changes in sbcl-1.0.26 relative to 1.0.25:
1203 * incompatible change: an interruption (be it a function passed to
1204 INTERRUPT-THREAD or a timer function) runs in an environment where
1205 interrupts can be enabled. The interruption can use
1206 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1207 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1208 potentially running out of stack. Keep in mind that in the absence
1209 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1210 acquiring a lock can enable interrupts.
1211 * incompatible change: GC-OFF and GC-ON are removed, as they were
1212 always unsafe. Use WITHOUT-GCING instead.
1213 * new feature: runtime option --disable-ldb
1214 * new feature: runtime option --lose-on-corruption to die at the
1215 slightest hint of possibly non-recoverable errors: running out of
1216 memory, stack, alien stack, binding stack, encountering a memory
1217 fault, etc. In the absence of --lose-on-corruption a warning is
1219 * enhancement: detect binding stack exhaustion
1220 * enhancement: detect alien stack exhaustion on x86/x86-64
1221 * improvement: generally more stable and reliable interrupt handling
1222 * improvement: there is a per thread interruption queue,
1223 interruptions are executed in order of arrival
1224 * improvement: a repeating timer reschedules itself when the it has
1225 finished, but expiration times are spaced equally. If an
1226 expiration time is in the past it will trigger after a short grace
1227 period that may give a chance to other things to run.
1228 * optimization: slightly faster gc on multithreaded builds
1229 * optimization: faster WITHOUT-GCING
1230 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1231 important locks so that the debugger/handler doesn't produce
1232 recursive errors or deadlock.
1233 * bug fix: real-time signals are not used anymore, so no more
1234 hanging when the system wide real-time signal queue gets full.
1235 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1237 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1238 * bug fix: fix random memory faults related to interrupts on alpha
1239 * bug fix: fix random memory faults related to interrupts on sparc
1240 * bug fix: fix deadlocks related to starting threads
1241 * bug fix: fix deadlines on locks on futex platforms
1242 * bug fix: restore errno in signal handlers
1243 * bug fix: fix deadlocks related to hash tables
1244 * bug fix: fix deadlocks in pcl
1246 changes in sbcl-1.0.25 relative to 1.0.24:
1247 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1248 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1249 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1250 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1251 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1252 better name and does not return values so stale on multiprocessor systems.
1253 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1255 * improvement: unithread builds keep track of MUTEX-VALUE.
1256 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1257 stream anymore making it thread safe to have a concurrent reader and
1258 a writer, for instance, in a pipe.
1259 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1260 arguments, making compiler-macros for SETF-functions able to inspect
1261 their constant arguments.
1262 * improvement: COMPILE-FILE reports times with millisecond accuracy
1263 (thanks to Luis Oliveira)
1264 * optimization: CHAR-CODE type derivation has been improved, making
1265 TYPEP elimination on subtypes of CHARACTER work better. (reported
1266 by Tobias Rittweiler, patch by Paul Khuong)
1267 * bug fix: setting alien structure fields of type struct by value now
1268 computes the right offset for the memory copy.
1269 * bug fix: compilation problem involving inlined calls to aliens with
1270 result type VOID. (reported by Ken Olum)
1271 * bug fix: #235a; sequential inline expasion in different policies no
1272 longer reuses the functional from the previous expansion site.
1273 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1274 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1275 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1276 cause an implied type redefinition. Regression from 1.0.21.29.
1277 * bug fix: sign-extension of small signed return values now works with C
1278 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1279 * improvements to the Windows port:
1280 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1281 Westfold, thanks to Rudi Schlatte)
1283 changes in sbcl-1.0.24 relative to 1.0.23:
1284 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1285 vector of a multidimensional SIMPLE-ARRAY.
1286 * new feature: the system now signals a continuable error if standard
1287 readtable modification is attempted. (thanks to Tobias Rittweiler)
1288 * new feature: DIRECTORY has been extended with a non-standard keyword
1289 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1290 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1291 has been robustified and documented better. (thanks to Robert Goldman)
1292 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1293 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1294 * tradeoff: constant FORMAT control strings are now compiled unless
1295 SPACE > SPEED (previously only when SPEED > SPACE.)
1296 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1298 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1300 * bug fix: lexical type declarations are now correctly reported by
1301 SB-CLTL2. (reported by Larry D'Anna)
1302 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1303 using UTF-8 as external format. (thanks to Luis Oliveira)
1304 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1305 are signalled correctly. (thanks to Stas Boukarev)
1306 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1307 designator. (thanks to Tobias Rittweiler)
1308 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1309 designator, and returns T instead of the function. (thanks to
1311 * bug fix: direct superclasses of STANDARD-CLASS and
1312 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1313 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1314 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1315 when no class with the named slot yet exists no longer causes a
1316 compile-time style-warning.
1317 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1318 in safe code. (reported by Didier Verna)
1319 * bug fix: #430; nested structure constructors can stack allocate.
1320 * bug fix: on some 64-bit platforms dynamic space size was truncated
1321 to #xffff0000 bytes. (reported by Benjamin Lambert)
1322 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1323 REPL unusable. (reported by Daniel Herring)
1324 * bug fix: return values of READ-SEQUENCE did not take :START into
1325 account on file streams, regressions since 1.0.12.22. (reported by
1326 Thomas Russ, patch by Paul Khuong)
1327 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1328 method specializer used to confuse permuation vector optimization.
1329 * bug fix: system inserted bogus implicit type declarations for local
1330 special variables in DEFMETHOD bodies.
1331 * bug fix: #354; duplicated frames in backtraces due to
1332 non-tail-call-optimized XEPs to functions with return type NIL
1334 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1335 initializes structure object slots according to DEFSTRUCT initforms,
1336 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1337 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1338 (reported by Bruno Haible and Stephen Wilson)
1339 * bug fix: #395; fill-pointer output streams used now support
1340 element-type BASE-CHAR as well.
1341 * bug fix: compiler error when attempting to derive return value of
1342 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1344 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1346 * bug fix: Mac OS X binaries should now be portable between Leopard
1349 changes in sbcl-1.0.23 relative to 1.0.22:
1350 * enhancement: when disassembling method functions, disassembly
1351 for the associated fast function is also produced.
1352 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1354 * optimization: printing with *PRINT-PRETTY* true is now more
1355 efficient as long as the object being printed doesn't require
1356 special handling by the pretty printer.
1357 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1358 now interact correctly with type declarations.
1359 * partial bug fix: PCL detects infinite recursion during wrapper
1360 validation. (thanks to Attila Lendvai)
1361 * bug fix: #426; nested function calls are inlined properly.
1362 Previously if FOO was an inline function, in calls of the form
1363 (FOO (FOO ...)) the outer call was not inlined.
1364 * bug fix: long long arguments passed in registers to alien
1365 functions on PowerPC Linux and NetBSD are now handled correctly
1366 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1368 changes in sbcl-1.0.22 relative to 1.0.21:
1369 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1370 for the shared object in the current directory, but passes the native
1371 namestring of the designated pathname to the operation system's shared
1372 object loading function as-it.
1373 * minor incompatible change: --disable-debugger toplevel option now takes
1374 effect before processing of initialization files and --eval or --load
1376 * new feature: new commandline argument: --script, which supports
1377 shebang lines. See documentation for details. (based on work by
1379 * new feature: SAVE-LISP-AND-DIE can save current values of
1380 --dynamic-space-size and --control-stack-size in the executable core,
1381 causing it to skip normal runtime option processing. See documentation
1382 for details. (thanks to Zach Beane)
1383 * enhancement: inoccous calls to EVAL or generic functions dispatching
1384 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1385 * enhancement: the system no longer resignals errors from --load and
1386 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1387 associated with the original error to be lost. (thanks to Ariel
1389 * enhancement: :DONT-SAVE keyword argument has been added to
1390 LOAD-SHARED-OBJECT for controlling interaction with
1391 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1392 the effects of an earlier LOAD-SHARED-OBJECT call.
1393 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1394 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1395 provided. (reported by Cedric St-Jean)
1396 * bug fix: circularity handling in the reader did not treat raw
1397 structure slots correctly. (reported by Cedric St-Jean)
1398 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1399 file descriptors when there were none.
1400 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1401 was broken. (reporteed by Willem Broekema)
1402 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1403 pathnames without a directory.
1404 * bug fix: COMPILE-FILE did not warn about undefined variable
1405 references at toplevel, and LOAD of the resulting fasl did
1406 not signal an error.
1407 * bug fix: functions with non-required arguments used to end up with
1408 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1409 * bug fix: redefining a function with non-required arguments didn't
1410 update the system's knowledge about its call signature properly.
1411 * bug fix: fixed #431; incompatible alien record type redefinitions
1412 are detected and handled. (reported by Neil Haven)
1413 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1414 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1416 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1417 after alien stack frames.
1418 * bug fix: strings passed to mk{s,d}temp lacked null termination
1420 changes in sbcl-1.0.21 relative to 1.0.20:
1421 * new feature: the compiler is able to track the effective type of a
1422 generic function across method addition and removal.
1423 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1424 appropriately typed structure slots without locking.
1425 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1426 information like those gathered by TIME using a programming-friendly
1428 * new feature: TIME reports time taken even if the form performs a
1429 non-local transfer of control.
1430 * enhancement: reduced conservativism on GENCGC platforms: on
1431 average 45% less pages pinned (measured from SBCL self build).
1432 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1433 mutate constant symbols or violate declaimed type of the symbol.
1434 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1435 sleeping on the semaphore in heavily contested semaphores.
1436 * bug fix: semaphores and condition variables were not interrupt
1438 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1439 owned by other threads anymore.
1440 * bug fix: FIND on lists called KEY outside the specified
1441 subsequence. (reported by budden)
1442 * bug fix: LOG doesn't use single-float intermediate results when
1443 given mixed integer and double-float arguments, leading to better
1444 precision. (reported by Bob Felts)
1445 * bug fix: LOG with base zero returned values of inconsistent type.
1447 changes in sbcl-1.0.20 relative to 1.0.19:
1448 * minor incompatible change: OPTIMIZE qualities
1449 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1450 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1451 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1452 * documentation: some slot access efficiency guidelines have been
1453 added to the user manual.
1454 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1455 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1456 as ASSOC and MEMEBER.
1457 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1458 to more efficient EQ-comparison versions more often.
1459 * optimization: enhanced derivation of DOLIST iteration variable type
1461 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1463 * optimization: runtime lookup of function definitions can be
1464 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1465 * optimization: compiler is able to derive the return type of
1466 (AREF (THE STRING X) Y) as being CHARACTER.
1467 * optimization: CLRHASH on empty hash-tables no longer does pointless
1468 work. (thanks to Alec Berryman)
1469 * optimization: REPLACE deftransforms don't punt when :START1 or
1471 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1472 no longer emits a code deletion note. (reported by Andrew
1474 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1475 functions with an odd number of &OPTIONAL arguments, a &REST
1476 argument, and one or more &KEY arguments at the call site.
1477 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1478 arguments appeared at call sites as well.
1479 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1480 READ-LINE &co can no longer read from them afterwards. (reported
1482 * bug fix: fixed #427: unused local aliens no longer cause compiler
1483 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1485 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1486 alien-stack leakage. (reported by Andy Hefner)
1487 * bug fix: PROGV signals an error when an attempt to violate declared
1488 type of a variable or bind a constant is made.
1489 * bug fix: SET signals an error when an attempt to violate declared
1490 type of a variable is made.
1491 * bug fix: restart computation during the execution of a restart
1492 test function no longer causes infinite recursion. (reported by
1494 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1495 signals an error. (thanks to Pierre Mai)
1496 * bug fix: EXPORT left symbol unexported in conflict situations.
1497 (thanks to Michael Weber)
1498 * bug fix: correctly handle name conflicts involving CL:NIL.
1499 (thanks to Michael Weber)
1500 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1501 conflicts arising from USEing package with conflicting symbols
1502 correctly. (thanks to Michael Weber)
1504 changes in sbcl-1.0.19 relative to 1.0.18:
1505 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1506 warnings that go otherwise unhandled will be muffled if they are
1507 of the type that's the value of this variable.
1508 * optimization: stack allocation is slightly more efficient on x86
1510 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1511 where a raw slot always is initialized using the initform whose
1512 type is not know sufficiently well a compile-time are now compiled
1513 correctly. (reported by John Morrison)
1514 * bug fix: compiler no longer makes erronous assumptions in the
1515 presence of non-foldable SATISFIES types.
1516 * bug fix: stack analysis missed cleanups of dynamic-extent
1517 arguments in non-let-converted calls to local functions.
1518 * improvements to the Windows port:
1519 ** adjusted address spaces for building on both Win32 and
1520 Win64. (thanks for John Connors)
1521 * fixed some bugs revealed by Paul Dietz' test suite:
1522 ** interval arithmetic during type derivation used inexact integer
1523 to single-float coercions.
1524 ** arithmetic operations involving large integers and single
1525 floats give the same results in compiled and interpreted code.
1526 ** deriving the result type of COERCE no longer signals an error
1527 if the derived type of the second argument is a MEMBER type
1528 containing invalid type specifiers.
1529 ** ADJOIN with constant NIL as second argument works correctly.
1530 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1532 changes in sbcl-1.0.18 relative to 1.0.17:
1533 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1534 profiles only the current thread.
1535 * minor incompatible change: changes to SYMBOL-VALUE of constants
1536 defined with DEFCONSTANT now signal an error.
1537 * enhancement: SB-SPROF now has support for wallclock profiling,
1538 and is also able to profile specific threads. REPORT output
1539 has also additional sorting options.
1540 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1542 * optimization: structure allocation has been improved
1543 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1544 ** out of line constructors are ~10% faster.
1545 ** inline constructors are ~15% faster.
1546 ** inline constructors are capable of dynamic extent allocation
1547 (generally on x86 and x86-64, in some cases on other platforms
1549 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1551 * optimization: file compiler is now able to coalesce non-circular
1552 lists, non-base strings, and bit-vectors. Additionally, constants
1553 are never referenced through SYMBOL-VALUE at runtime.
1554 * optimization: code defining methods on PRINT-OBJECT (and other
1555 generic functions in the COMMON-LISP package) now loads faster.
1556 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1558 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1559 fasl is now deleted. (reported by Attila Lendvai)
1560 * bug fix: READ-LINE always returned NIL for the last line in files.
1561 (reported by Yoshinori Tahara)
1562 * bug fix: more accurate disassembly annotations of foreign function
1563 calls. (thanks to Andy Hefner)
1564 * bug fix: trimming non-simple strings and non-string string
1565 designators when the there is nothing to trim works properly.
1566 (thanks to James Knight)
1567 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1568 (thanks to Travis Cross)
1569 * fixed some bugs revealed by Paul Dietz' test suite:
1570 ** NIL is a valid function name (regression at 1.0.13.38)
1571 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1572 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1573 fill pointers properly (regression at 1.0.12.23)
1574 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1575 displacement indices properly (regression at 1.0.12.23)
1577 changes in sbcl-1.0.17 relative to 1.0.16:
1578 * temporary regression: user code can no longer allocate closure
1579 variable storage on stack, due to bug 419 without explicitly
1580 requesting it. Please consult sbcl-devel for advice if you need to
1581 use this feature in the meanwhile.
1582 * new feature: runtime argument --control-stack-size can be used to
1583 adjust thread default control stack size.
1584 * enhancement: improved TIME output
1585 ** all times are reported using the measured accuracy (milliseconds
1586 for real and GC times, microseconds for everything else.)
1587 ** processor cycle counts on x86 and x86-64.
1588 ** interpreted forms are counted for both evaluator modes.
1589 ** number of lambdas converted by the compiler is reported.
1590 ** CPU percentage report (computed from real and total run time.)
1591 ** more comprehensive run time reporting, using a condenced format
1592 ** interperted form, lambda, and page fault counts are omitted
1594 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1596 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1597 * optimization: two argument forms of LAST are upto ~10% faster
1598 in normal SPEED policies.
1599 * optimization: NCONC no longer needs to heap cons its &REST list
1600 in normal SPEED policies.
1601 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1602 to Sidney Markowitz)
1603 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1604 regression since 1.0.9.1. (thanks to Eric Marsden)
1605 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1606 since 1.0.15.36. (thanks to Paul Khuong)
1607 * bug fix: LAST when always returned the whole list when given a bignum
1608 as the second argument.
1609 * bug fix: dynamic extent allocation of nested lists and vectors
1610 could leak to otherwise accessible parts.
1611 * bug fix: invalid optimization of heap-allocated alien variable
1613 * bug fix: fasl header checking is less vulnerable to different
1614 platform word lengths.
1615 * bug fix: more correct assembler syntax for GNU binutils
1616 2.18.50.0.4 support. (thanks to Marijn Schouten)
1617 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1619 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1620 declarations) successfully. (reported by Attila Lendvai)
1622 changes in sbcl-1.0.16 relative to 1.0.15:
1623 * minor incompatible change: revert the changes to sb-posix's error
1624 signaling added in 1.0.14.
1625 * minor incompatible change: change PROBE-FILE back to returning
1626 NIL whenever we can't get a truename, as was the case before 1.0.14.
1627 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1628 inherits from ERROR instead of just CONDITION.
1629 * new feature: SB-INTROSPECT can provide source locations for instances
1630 as well. (thanks to Tobias Rittweiler)
1631 * optimization: binding special variables now generates smaller code
1632 on threaded platforms.
1633 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1634 and cases where no :TEST is given but the compiler can infer that
1635 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1636 * optimization: better LOGNOT on fixnums.
1637 * optimization: modular arithmetic for a particular requested width
1638 is implemented using a tagged representation unless a better
1639 representation is available.
1640 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1641 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1642 for wellformedness and returns a specialized vector. (reported by
1643 Francois-Rene Rideau)
1644 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1645 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1646 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1647 unscheduling timer at the same time as another timer fires.
1648 * bug fix: don't reschedule timers for dead threads.
1649 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1650 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1651 bogus errors if select() was interrupted.
1652 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1654 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1655 * enhancement: cleaner backtraces for interactive interrupts, as
1656 well as other cases where the interesting frames used to be
1657 obscured by interrupt handling frames.
1658 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1659 now supported, and tracing a whole package using (TRACE "FOO") now
1660 traces SETF-functions as well.
1661 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1662 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1663 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1664 * unreadably printed representation of hash-tables now includes
1666 * bug fix: partially fixed #188: type propagation from assignments
1667 is now more efficient.
1668 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1669 'DOUBLE-FLOAT) are not flushable.
1670 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1671 full address of the object, and none of the tag bits.
1672 * bug fix: readably printing hash-tables now respects other printer
1673 control variables. (reported by Cedric St-Jean)
1674 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1675 keyword with MAKE-HASH-TABLE.
1676 * bug fix: export SB-POSIX:MKSTEMP.
1677 * bug fix: SORT was not interrupt safe.
1678 * bug fix: XREF accounts for the last node of each basic-block as
1680 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1681 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1682 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1683 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1684 create obsolete instances in the case of redefinition or
1685 obsoletion of a superclass. (thanks to Andy Hefner)
1686 * bug fix: Support for the Alpha architecture has been revived; it had
1687 suffered somewhat from lack of maintenance since sbcl-1.0.
1688 * improvements to the Windows port:
1689 ** The system detects the codepage to use at startup, instead of
1690 using the value from the saved core. (thanks to Kei Suzuki)
1692 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1693 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1694 (see documentation for details.)
1695 * revived support for OpenBSD (contributed by Josh Elsasser)
1696 * partially fixed bug #108: ROOM no longer suffers from occasional
1697 (AVER (SAP= CURRENT END)) failures.
1698 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1699 bodies no longer cause a WARNING to be signalled. (reported by
1701 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1702 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1703 the bug in TRUNCATE.) (reported by Michael Weber)
1704 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1705 no samples. (reported by Andy Hefner)
1706 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1707 no longer appear as (NIL ...) frames in backtraces.
1708 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1709 is now actually exported from SB-EXT as documented. (reported by
1711 * bug fix: sb-aclrepl now correctly understands how to inspect
1712 single-floats on 64-bit platforms where single-floats are not boxed.
1713 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1714 yet been finalized. (reported by Levente Meszaros)
1715 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1716 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1717 SBCL-specific optimize qualities.
1719 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1720 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1721 an executable in the search path, and does so in the child
1722 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1723 been removed; it can be found in the CVS history, for somebody who
1724 needs that search behavior (see the manual).
1725 * minor incompatible change: compiler policy re. weakening type
1726 checks has changed: now type checks are weakened only if SAFETY < 2
1728 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1729 unparsing of directory pathnames as files. Analogously,
1730 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1731 filename to parse into a directory pathname.
1732 * enhancement: implicit generic function creation now signals a
1733 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1734 users can bind handlers for and muffle around calls to LOAD.
1735 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1736 to be used (using the default stream external format), and allows
1737 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1738 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1739 strings and vectors whose element-type or simplicity is not fully
1740 known at compile-time.
1741 * optimization: STRING-TRIM and related functions no longer allocate
1742 a new string when no trimming needs to be performed. These functions
1743 are also faster than before when the input string has been declared
1745 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1746 * optimization: READ-LINE is significantly faster for files containing
1748 * optimization: non-open coded uses of character comparison operators
1749 (e.g. char=) no longer cons when called with more than one parameter
1750 on platforms supporting dynamic-extent allocation.
1751 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1752 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1753 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1755 * bug fix: some sequence functions elided bounds checking when
1757 * bug fix: too liberal weakening of union-type checks when SPEED >
1759 * bug fix: more bogus fixnum declarations in ROOM implementation
1762 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1763 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1764 :SYNCHRONIZED argument, which makes the hash-table safe for
1765 concurrent accesses (but not iteration.) See also:
1766 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1767 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1768 * optimization: CONCATENATE on strings is an order of magnitude faster
1769 in code compiled with (> SPEED SPACE).
1770 * optimization: SUBSEQ is ~50% faster on lists.
1771 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1772 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1773 END is smaller then START.
1774 * bug fix: SB-PROFILE will no longer report extra consing for nested
1775 calls to profiled functions.
1776 * bug fix: ROOM implementation had bogus fixnum declarations which
1777 could cause type-errors when calling ROOM on large images.
1778 * bug fix: if file compilation is aborted, the partial fasl is now
1779 deleted, and COMPILE-FILE returns NIL as the primary value.
1780 * bug fix: number of thread safety issues relating to SBCL's internal
1781 hash-table usage have been fixed.
1782 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1783 be returned from its body when the values were being returned
1784 using unknown-values return convection and the W-P-O was wrapped
1785 inside an UNWIND-PROTECT.
1786 * bug fix: sb-posix should now compile again under Windows, enabling
1787 slime to work again.
1789 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1790 * incompatible change: hash-table accessor functions are no longer
1791 automatically protected by locks. Concurrent accesses on the same hash-table
1792 from multiple threads can give inconsistent results or even corrupt the
1793 hash-table completely. Multi-threaded applications should do their own
1794 locking at the correct granularity. In the current implementation it is
1795 still safe to have multiple readers access the same table, but it's not
1796 guaranteed that this property will be maintained in future releases.
1797 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1798 and will signal an error at runtime.
1799 * enhancement: SB-THREAD package now exports a semaphore interface.
1800 * enhancement: CONS can now stack-allocate on x86 and
1801 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1803 * enhancement: nested lists can now be stack allocated on
1804 platforms providing stack allocation support.
1805 * enhancement: dynamic-extent support has been extended to support
1806 cases where there are multiple possible sources for the stack
1808 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1809 if the mutex is uncontested on Linux.
1810 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1811 as specified by the CLHS. (thanks to Tobias Rittweiler)
1812 * bug fix: NaN comparison now works on x86-64.
1813 * bug fix: CLOSE :ABORT T on a stream with pending output now
1815 * bug fix: instances of non-standard metaclasses using standard
1816 instance structure protocol sometimes missed the slot type checks
1818 * bug fix: known functions can be inlined in high-debug code.
1820 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1821 * minor incompatible change: the MSI installer on Windows no longer
1822 associates .lisp and .fasl files with the installed SBCL.
1823 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1824 on Windows. (thanks to Luis Oliviera)
1825 * new feature: SB-CLTL2 contrib module now implements
1826 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1827 * optimization: scavenging weak pointers is now more efficient,
1828 requiring O(1) instead of O(N) per weak pointer to identify
1829 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1830 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1831 method bodies using constant slot-names when the first argument is
1832 a specializer parameter for the method.
1833 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1834 names, when the class of the instance is a direct instance
1835 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1836 as slow as the constant slot-name case.)
1837 * optimization: member type construction is now O(N) instead
1839 * optimization: UNION and NUNION are now O(N+M) for large
1840 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1842 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1843 now more readable in environments like Slime which display it.
1844 (thanks to Tobias C. Rittweiler)
1845 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1846 was able to infer the correct argument type for the object on which
1847 the CAS operation was being performed.
1848 * bug fix: copy propagation interfered with parallel assignment
1849 semantics in local calls. (reported by Paul Khuong)
1850 * bug fix: the signed modular fixnum shift compiled to wrong code on
1851 x86 and x86-64. (spotted by a slight modification to some of
1854 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1855 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1856 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1857 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1859 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1860 and generic function now print the object identity for anonymous
1861 instances. (thanks to Attila Lendvai)
1862 * enhancement: as an extension to MOP, SBCL now supports SETF of
1863 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1864 (thanks to Attila Lendvai)
1865 * enhancement: sb-cover has an alternate annotation mode which puts
1866 the form annotations at the car of the form, instead of annotating
1867 it completely. The benefit of this mode is that it shows better
1868 which forms were instrumented by the compiler.
1869 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1870 by printer control variables. (reported by Dan Corkill)
1871 * bug fix: system leaked memory when delayed output was performed by
1872 the OS in smaller chunks then expected. (thanks to David Smith)
1873 * bug fix: system leaked memory when file streams were not closed
1875 * bug fix: large objects written to slow streams that were modified
1876 after the write could end up with the modified state written to
1877 the underlying file descriptor.
1878 * bug fix: multiple threads operating in parallel on the same stream
1879 could cause buffer-overflows.
1880 * bug fix: source location information is stored correctly
1881 (broken since 1.0.6). This bug would generally show up as the
1882 Slime debugger highlighting the wrong form when the sldb-show-source
1884 * bug fix: Branch forms are again annotated as branches in the sb-cover
1886 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1887 on x86-64. (reported by Gregory Vanuxem)
1888 * bug fix: EQUALP could return wrong results for structures with raw
1889 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1890 word). (reported by Vjacheslav Fyodorov)
1891 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1894 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1895 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1896 atomic compare-and-swap operations on threaded platforms.
1897 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1898 allows assigning a global minimum value to optimization qualities
1899 (overriding proclamations and declarations).
1900 * enhancement: closed over variables can be stack-allocated on x86
1902 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1904 * optimization: slot definition lookup is now O(1). This speeds up
1905 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1906 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1907 * optimization: ASSOC and MEMBER can now be open-coded for all
1908 combinations of keyword arguments when second argument is constant
1909 and SPEED >= SPACE. In other cases a specialized version is
1911 * bug fix: using obsoleted structure instances with TYPEP and
1912 generic functions now signals a sensible error.
1913 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1914 (reported by Kristoffer Kvello)
1915 * bug fix: backtrace construction is now more careful when making
1916 lisp-objects from pointers on the stack, to avoid creating bogus
1917 objects that can be seen by the GC.
1918 * bug fix: defaulting of values in contexts expecting more than 7
1919 variables now works on x86-64. (reported by Christopher Laux)
1920 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1922 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1923 as the property-list of a symbol.
1924 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1925 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1926 situations requested, are once again file-compileable. (reported
1929 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1930 * MOP improvement: support for user-defined subclasses of
1931 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1932 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1933 the expansion of DEFMETHOD, is responsible for generating a form
1934 which creates a list of specializers when evaluated. Additional
1935 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1936 debugging and introspective support.
1937 * minor incompatible change: the (unsupported) spinlock interface
1938 has changed: free spinlock now has the value NIL, and a held spinlock
1939 has the owning thread as its value.
1940 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1941 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1943 * enhancement: name of a socket-stream is now "a socket" instead of
1944 "a constant string".
1945 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1946 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1947 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1948 for generic functions. (Thanks to Tobias C. Rittweiler)
1949 * optimization: bignum printing speed has been improved by 20-40%
1950 (depending on the bignum size.)
1951 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1953 * bug fix: the cache used by the CLOS to store precomputed effective
1954 methods, slot offsets, and constant return values is now thread and
1956 * bug fix: generic function dispatch function updating is now thread
1957 and interrupt safe (in the sense that the known issues have been
1959 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1960 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1961 * bug fix: asdf systems with dependencies to the SB-POSIX or
1962 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1963 * bug fix: interrupt safety of applicable method computation has been
1966 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1967 * new contrib: sb-cover, an experimental code coverage tool, is included
1968 as a contrib module.
1969 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1970 significantly faster.
1971 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1972 produce more efficient code on x86-64 if the compiler can determine
1973 that (+ INDEX <constant>) does not require a bounds check and FOO
1974 has an element type at least 8 bits wide.
1975 * enhancement: a new, experimental synchronous timeout facility is
1976 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1977 * enhancement: when a symbol name conflict error arises, the
1978 conflicting symbols are always printed with a package prefix.
1979 (thanks to Kevin Reid)
1980 * enhancement: stepping is now once again supported on the SPARC and
1981 MIPS platforms. (It is also now more likely to work on CheneyGC
1983 * enhancement: sb-sprof can now also track and report accurate call
1985 * bug fixes: the treatment of non-standard subclasses of
1986 SB-MOP:SPECIALIZER is more correct.
1987 * incompatible change: PURIFY no longer copies the data from the
1988 dynamic space into the static and read-only spaces on platforms
1989 that use the generational garbage collector
1990 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1992 * bug fix: GC race condition occasionally resulting in crashes with
1993 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1995 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1997 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1998 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1999 * bug fix: an asynchronous interrupt could previously leave the
2000 system running with GC inhibited.
2001 * bug fix: a DECLARE form evaluated at top-level now causes an error
2002 rather than silently (or verbosely) returning NIL.
2003 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2004 result in a error being signalled due to source form lookup errors.
2005 (reported by Peter Graves)
2007 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2008 * incompatible change: removed writer methods for host-ent-name,
2009 host-ent-addresses -- changing the values did not update the DNS
2011 * minor incompatible change: changed experimental JOIN-THREAD interface
2012 * documentation: the manual now lists reader and writer methods
2013 in class slot documentation sections. (thanks to Richard M Kreuter)
2014 * documentation: unwinding from asyncronous events has been
2015 documented as unsafe.
2016 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2017 in multithreaded application code.
2018 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2019 platforms. (thanks to James Anderson for the optimization hint)
2020 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2022 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2023 variants no longer cons.
2024 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2025 their NOT- variants no longer cons.
2026 * optimization: EQUAL hash tables no longer use SXHASH for objects
2027 of all data types, but instead use an EQL hash for types for which
2028 EQUAL is the same as EQL.
2029 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2030 are significantly faster.
2031 * optimization: new STRING-OUTPUT-STREAM implementation is much
2032 faster for large outputs and conses 30% less on average.
2033 * enhancement: XREF information is now collected for references made
2034 to global variables using SYMBOL-VALUE and a constant argument.
2035 * enhancement: SIGINT now causes a specific condition
2036 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2037 * bug fix: FILE-POSITION used to signal an error in some cases where
2038 ANSI requires it to return NIL.
2039 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2040 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2041 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2043 * bug fix: bad type declaration in the CLOS implementation has
2044 been fixed. (reported by James Anderson)
2045 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2046 (thanks to Lutz Euler)
2047 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2048 required by the CLHS. (reported by Samium Gromoff)
2049 * bug fix: dead unbound variable references now signal an error.
2050 (reported by Marco Monteiro)
2051 * bug fix: / with an unused value was being deleted in safe code.
2052 (thanks to Marco Monteiro and Kevin Reid)
2053 * bug fix: number of characters that can be written onto a single
2054 line in a file is unlimited.
2055 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2056 been fixed by inhibiting interrupts for when GC is disabled.
2057 * bug fix: some interrupt safety issues with GETHASH, (SETF
2058 GETHASH), CLRHASH and REMHASH have been fixed.
2059 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2060 specifier no longer causes infinite recursion.
2061 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2062 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2063 * bug fix: an &environment argument with the correct variable information
2064 is passed to macros that are expanded during byte compilation.
2065 (reported by Samium Gromoff)
2066 * bug fix: a logic error was causing the hash function for bignums to
2067 have excessive amounts of collisions. (reported by Faré Rideau)
2068 * bug fix: modifying the contents of an array could change the return
2069 value of SXHASH on that array, which is only allowed for strings
2070 and bit vectors. (bug introduced in 0.9.16)
2071 * improvement: the x86-64/darwin port now passes all tests (except
2072 for the debugger tests) but should still be considered
2073 experimental until this is fixed.
2074 * improvement: a style-warning is signaled for CASE (etc) clauses with
2075 duplicate keys. (thanks to Kevin Reid)
2076 * improvement: macos/x86 and macos/x86-64 now use mach exception
2077 handlers for dealing with illegal instructions (for trapping and
2078 error handling) and memory protection violations (for GC).
2080 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2081 * new platform: experimental support for x86-64/darwin (MacOS).
2082 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2083 and getnameinfo sockets functions are used instead of gethostbyaddr
2084 and gethostbyname, on platforms where the newer functions are available.
2085 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2087 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2088 don't print the startup banner, but behave as if --noinform was passed
2089 as a command line argument. (thanks to Kevin Reid)
2090 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2091 * optimization: code using alien values with undeclared types is much faster.
2092 * optimization: the compiler is now able to open code SEARCH in more cases.
2093 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2094 * bug fix: using standardized COMMON-LISP special variables as loop
2095 variables no longer signals bogus package lock violations. (reported
2097 * bug fix: declaring local loop variables to be of a range-limited type
2098 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2099 (reported by Andras Simon)
2100 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2101 bugs remain on x86-64.)
2102 * bug fix: the #= and ## reader macros now interact reasonably with
2103 funcallable instances.
2104 * bug fix: type-checks for function arguments were compiled using the
2105 compiler policy settings of the wrong lexical environment (in 1.0.2
2107 * bug fix: SHADOW accepts characters as string designators, as required
2108 by the spec (thanks to Eric Marsden)
2109 * bug fix: fixed GC safety issues when foreign functions are called with
2110 non-base strings as arguments
2111 * bug fix: more consistent error output for fatal-compiler-warnings, like
2113 * bug fix: functions with proper names were showing up as NIL in
2114 backtraces (reported by Edi Weitz, regression in 1.0.2)
2116 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2117 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2118 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2119 produce more efficient code on the x86 if the compiler can determine
2120 that (+ INDEX <constant>) does not require a bounds check and FOO
2121 has an element type at least 8 bits wide.
2122 * bug fix: references to undefined variables are handled the same way
2123 in toplevel forms as in the normal compiler
2124 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2126 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2127 (thanks to Jon Buller)
2128 * improvement: faster compilation times for complex functions
2129 * improvement: added readlink support to SB-POSIX (thanks to Richard
2132 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2133 * improvement: experimental support for mach exception handling on
2134 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2136 * improvement: support for GBK external format.
2137 (thanks to Chun Tian (binghe))
2138 * improvement: the debugger now displays variables that have been closed
2139 over, in code compiled with (DEBUG 2) or higher
2140 * improvement: support for executable cores on NetBSD (thanks to
2142 * new feature: added a RESTART-FRAME debugger command
2143 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2144 be used to provide an implementation for FILE-POSITION on Gray streams
2145 (thanks to Eric Marsden)
2146 * new feature: add syslog, openlog and closelog support to SB-POSIX
2147 (thanks to Richard Kreuter)
2148 * optimization: the function call overhead in code compiled with
2149 a high DEBUG optimization setting is significantly
2150 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2151 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2152 (thanks to Tony Martinez)
2153 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2154 evaluated once (reported by Kevin Reid)
2155 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2156 works again (thanks to Kilian Sprotte)
2157 * bug fix: an error is signaled for tagbodies with duplicate tags
2158 (thanks to Stephen Wilson)
2159 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2160 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2161 stack frames from alien callbacks.
2162 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2163 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2164 65k pages (thanks to David Woodhouse)
2165 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2167 changes in sbcl-1.0.1 relative to sbcl-1.0:
2168 * new platform: FreeBSD/x86-64, including support for threading.
2169 * new feature: the compiler stores cross-referencing information
2170 about function calls (who-calls), macroexpansion (who-macroexpands)
2171 and special variables (who-binds, who-sets, who-references) for code
2172 compiled with (< SPACE 3). This information is available through the
2173 sb-introspect contrib.
2174 * new feature: users may subclass SEQUENCE, and have instances of
2175 these classes interoperate with standard Common Lisp functions if
2176 a number of methods are defined. (This feature is experimental
2177 and the interface subject to change based on feedback from SBCL
2178 users and the general community)
2179 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2180 x86/x86-64, rather than the previous fixed depth of 8
2181 * improvement: another pthread back-end of mutex "pthread-futex".
2182 * bug fix: non-ascii command-line arguments are processed correctly
2183 (thanks to Yaroslav Kavenchuk)
2184 * bug fix: non-required arguments were not passed correctly when a method
2185 defined using DEFMETHOD was called from a mop-generated method using
2186 CALL-NEXT-METHOD (reported by Pascal Costanza)
2187 * bug fix: recursion is now permitted in accessors through
2188 SLOT-UNBOUND. (reported by Pascal Costanza)
2189 * bug fix: an error was signaled at startup if the HOME environment
2190 variable was defined, but had an empty value (reported by Peter Van Eynde)
2191 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2192 signal a PROGRAM-ERROR, not a BUG.
2193 * bug fix: SB-POSIX:READDIR works when built with large file support.
2194 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2196 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2197 for better automatic indentation support. (thanks to Matt Pillsbury)
2198 * optimization: loading generic functions no longer takes O(n^2) time,
2199 proportional to the amount of methods in the generic function
2200 (reported by Todd Sabin and Jeremy Brown)
2201 * optimization: the FIND and POSITION family of sequence functions
2202 are significantly faster on arrays whose element types have been
2204 * improvements to the Windows port:
2205 ** Intermittent heap corruption problems have been fixed. (thanks
2206 to Alastair Bridgewater)
2207 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2209 ** Lisp is able to unwind foreign exception frames from alien
2210 callbacks. (thanks to Alastair Bridgewater)
2212 changes in sbcl-1.0 relative to sbcl-0.9.18:
2213 * improvement: experimental support for threading on FreeBSD/x86.
2214 (thanks to NIIMI Satoshi)
2215 * improvement: runtime option --dynamic-space-size can be used
2216 to set the size of the dynamic space reserved on startup.
2217 * improvement: floating point modes in effect are now saved in
2218 core, and restored on startup.
2219 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2220 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2221 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2222 threads are not running after *SAVE-HOOKS* have run.
2223 * improvement: writes to CLOS instance slots are type-checked in code
2224 compiled with (SAFETY 3)
2225 * improvement: floating-point exception handling on FreeBSD (thanks to
2227 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2228 (thanks to Zach Beane)
2229 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2231 * improvement: added support for the Shift-JIS external format.
2232 (contributed by NIIMI Satoshi)
2233 * improvement: callbacks are supported on Linux/PPC. (thanks to
2235 * bug fix: compiler bug triggered by a (non-standard) VALUES
2236 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2237 * bug fix: file compiler no longer confuses validated and already
2238 dumped structurres. (reported by Kaersten Poeck)
2239 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2240 fill-pointer signals a type-error as required. (thanks to
2242 * bug fix: disassemly of funcallable instances works.
2243 * bug fix: single stepping on PPC.
2244 * bug fix: fix thread-safety problems in the type system (generally
2245 manifesting as nonsensical errors like "STRING is a bad type specifier
2246 for sequences" or "The value 1 is not of type FIXNUM")
2247 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2248 (reported by Josip Gracin)
2249 * bug fix: an error is signaled for attempts to displace arrays with
2250 incompatible element types (thanks to Mario Mommer)
2251 * bug fix: more correct handling of wide characters in debug info
2252 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2253 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2254 and don't cause extra consing
2255 * optimization: MAP and MAP-INTO are significantly faster on vectors
2256 whose elements types have been declared.
2257 * Improvements to SB-SPROF:
2258 ** Support for allocation profiling
2259 ** Reduced profiling overhead, especially for long profiling runs
2260 * Improvements to the Windows port:
2261 ** floating point exceptions are now reported correctly.
2262 ** stack exhaustion detection works partially.
2263 ** more accurate GET-INTERNAL-REAL-TIME.
2264 ** better RUN-PROGRAM behaviour in case of errors in the child
2266 ** PROBE-FILE now simplifies pathnames correctly.
2267 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2268 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2269 1st 1970 (although time timezone data will be unreliable).
2270 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2272 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2273 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2274 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2276 * bug fix: two potential GC deadlocks affecting threaded builds.
2277 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2278 returns T (reported by Anton Kazennikov)
2279 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2280 with non-variable places
2281 * bug fix: remove a race condition in the setting of
2282 funcallable-instance functions, this should make threaded CLOS
2283 code more stable against memory faults.
2284 * bug fix: corruption of specials when unbinding is interrupted by an
2285 asynchronous unwind (reported by Hannu Koivisto)
2286 * improvement: the debugger will now also display local variables that
2287 are only used once, for code compiled with a DEBUG optimization quality
2290 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2291 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2292 * incompatible change: External-format support for FFI calls. The
2293 SB-ALIEN:C-STRING no longer implies an ASCII
2294 external-format. Instead the string is subject to external-format
2295 conversion. Additionally return values of type SB-ALIEN:C-STRING
2296 are by default of type (SIMPLE-ARRAY CHARACTER), not
2297 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2298 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2299 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2300 * incompatible change: SB-EXT package no longer contains the
2301 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2302 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2304 * incompatible change: the single-stepper is no longer available
2305 on Alpha, Mips and Sparc platforms.
2306 * minor incompatible change: the direct superclasses of
2307 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2308 not (STANDARD-OBJECT FUNCTION). This makes the
2309 class-precedence-lists of GENERIC-FUNCTION and
2310 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2312 * minor incompatible change: the default stream external format on
2313 non-unicode SBCL is no longer detected from the locale, but is always
2315 * new feature: Add a version of evaluator that uses an interpreter instead
2316 of the compiler. EVAL still uses the compiler by default, to switch it
2317 to use the interpreter, set the value of the variable
2318 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2319 * minor incompatible change: the single-stepper REPL has been merged
2320 with the normal debugger (see the "Stepping" heading of the debugger help
2321 for more details). The debugger command STEP will no longer switch
2322 to the single-stepper REPL.
2323 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2324 for a type now works.
2325 * bug fix: loading of default sysinit file works. (thanks to Leonid
2327 * bug fix: better detection of circularities in the file-compiler.
2328 (reported by Marco Monteiro)
2329 * bug fix: the CL pathname functions now work with files that have
2330 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2331 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2332 systems with Unix98 pty semantics.
2333 * bug fix: ASDF-INSTALL will now work with bsd tar.
2334 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2336 * bug fix: timers expiring in dead threads no longer cause a
2337 type-error (reported by Paul "Nonny Mouse").
2338 * bug fix: thanks to more lightweight single-stepper instrumentation,
2339 code compiled with (DEBUG 3) will compile and execute significantly faster,
2340 and will have more accurate type-inferencing than before
2341 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2342 whose bindings are modified
2343 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2344 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2345 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2346 CL:SOFTWARE-VERSION with proper version
2348 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2349 * feature: implemented the READER-METHOD-CLASS and
2350 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2351 as specified by AMOP.
2352 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2354 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2355 (thanks to Lutz Euler)
2356 * optimization: hashing of general arrays and vectors has been
2357 improved. (reported by Any Fingerhut)
2358 * enhancement: SB-INTROSPECT is now able to find definitions of
2359 profiled functions. (thanks to Troels Henriksen)
2360 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2361 as well, allowing compiler-macros for SETF-functions to expand.
2362 * enhancement: step-instrumentation no longer wraps known
2363 single-value functions with multiple-value context, allowing
2364 better type inference.
2365 * fixed bug #337: use of MAKE-METHOD in method combination now works
2366 even in the presence of user-defined method classes. (reported by
2367 Bruno Haible and Pascal Costanza)
2368 * fixed bug #339(c): if there are applicable methods not part of any
2369 long-form method-combination group, call INVALID-METHOD-ERROR.
2370 (reported by Bruno Haible)
2371 * fixed bug #361: the :FUNCTION initarg in the protocol for
2372 initialization of methods can now be used to override
2373 internally-produced optimized functions. (reported by Bruno
2375 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2376 system-provided lambda expression no longer cause warnings about
2377 unbound #:|pv-table| symbols.
2378 * bug fix: improved the handling of type declarations and the
2379 detection of violations for keyword arguments with non-constant
2381 * bug fix: potentially erronous calls to PATHNAME and
2382 MERGE-PATHNAMES were being flushed in some cases.
2383 (reported by Richard Kreuter)
2384 * bug fix: compiled calls to TYPEP were mishandling obsolete
2385 instances. (reported by James Bielman and Attila Lendvai)
2386 * bug fix: format strings with ~> without matching ~< no longer
2387 trigger an AVER, but signal an understandable error instead.
2388 (reported by Antonio Martinez)
2389 * bug fix: specifying an output-file without a pathname-type for
2390 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2391 of input-file instead of "fasl". (reported by Robert Dodier)
2392 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2393 (reported by James Y Knight).
2394 * bug fix: compiler-macros-function did not consider the environment
2395 argument for shadowing by local functions.
2396 * bug fix: compiler-macros expansion was inhibited by local INLINE
2398 * bug fix: inline expansions of known functions were subject to
2399 step-instrumentation in high debug policies, leading to problems
2400 with type-inference.
2401 * bug fix: compiler failed to differentiate between different CONS
2402 types in some cases.
2403 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2404 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2405 * bug fix: #368: incorrect use of expressed vs. upgraded array
2407 * bug fix: #306a: more precise unions of array types.
2408 * thread-safety improvements:
2409 ** CONDITION-WAIT could return early on Linux, if the thread was
2410 interrupted and subsequently continued with SIGCONT.
2411 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2413 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2414 * added support for the ucs-2 external format. (contributed by Ivan
2416 * minor incompatible change: pretty printing of objects of type
2417 (cons symbol) is, in the default pprint-dispatch-table, now
2418 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2420 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2421 called later in a class's lifetime, possibly as late as when the
2422 first instance of the class is created. Previously,
2423 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2424 class became finalizeable.
2425 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2426 for multibyte external-format streams. (thanks to "vbzoli")
2427 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2428 with :ALLOCATION :CLASS inherited from superclasses of the
2430 * fixed bug: anonymous classes can now be created using the :NAME
2431 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2432 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2433 * fixed bug: core-files saved with :EXECUTABLE T can again be
2434 executed when SBCL_HOME isn't set. (reported by James Knight)
2435 * fixed bug: toplevel LOCALLY forms with declarations could
2436 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2437 * fixed bug: printing from several different threads using different
2438 values of *print-case* could cause invalid output, due to
2439 some internal special variables of the printer not being bound
2440 thread-locally (reported by Max Mikhanosha)
2441 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2442 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2443 (reported by Pascal Costanza)
2444 * fixed bug: FINALIZE-INHERITANCE is called from
2445 REINITIALIZE-INSTANCE on classes when the class has previously
2446 been finalized, as required by AMOP.
2447 * minor code generation optimizations:
2448 ** better register allocation in CLOS dispatching functions
2449 ** overflow detection when coercing signed bytes to fixnums on x86-64
2450 ** is now implemented with one IMUL instruction instead of three shifts
2451 ** more efficient bit-vector access on x86 and x86-64
2452 ** more efficient access to raw structure slots on x86 and x86-64
2453 * fixed some bugs revealed by Paul Dietz' test suite:
2454 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2455 return its argument.
2457 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2458 * feature: thread support on Solaris/x86, and experimental thread support
2460 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2462 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2463 default method for SLOT-UNBOUND.
2464 * minor incompatible change: prevent the user from specializing the
2465 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2466 somewhat counter to the intent of the protocol, I (CSR) think, and
2467 additionally it just doesn't work in SBCL as currently
2468 implemented, thanks to optimizations (that are always valid for
2469 the other three SLOT-VALUEish functions, but not for the setter).
2470 * minor incompatible change: the :SB-LDB feature is now enabled by
2471 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2472 the low-level debugger.
2473 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2474 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2475 down to an SB-SYS:FD-STREAM, allowing direct communication in
2476 more cases. Temporary files and pipes are still used as a fallback
2478 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2479 on the non-reentrant C functions localtime(3) and gmtime(3).
2480 * bug fix: global optimization policy was not visible in LOCALLY and
2482 * bug fix: class objects can be used as specializers in methods.
2483 (reported by Pascal Costanza)
2484 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2485 with a type error. (reported by blitz_ on #lisp)
2486 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2487 failed with a type error. (reported by Pascal Bourguignon)
2488 * bug fix: merging pathnames against defaults with :DIRECTORY
2489 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2490 (reported by James Y Knight)
2491 * bug fix: saving large (>2GB) cores on x86-64 now works
2492 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2493 constant index and a (simple-array (signed-byte 32)) array
2494 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2495 error (patch by Robert J. Macomber)
2496 * feature: TIME now displays the amount of run-time spent in GC
2497 * bug fix: The debugger now does a better job of respecting
2498 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2499 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2500 workaround for bug 403.)
2501 * bug fix: floating point exception handling now works on FreeBSD
2502 (thanks to NIIMI Satoshi)
2503 * fixed some bugs revealed by Paul Dietz' test suite:
2504 ** MISC.641: LET-conversion were not supposed to work in late
2506 * improvements to the Win32/x86 port:
2507 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2508 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2510 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2511 * new feature: source path information is generated for macro-expansion
2512 errors for use in IDE's like Slime (thanks to Helmut Eller)
2513 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2514 * bug fix: compiler does not loop forever on an invalid type in
2516 * improvement: compilation of most CLOS applications is significantly
2518 * optimization: added a limited bytecode compiler for simple toplevel
2519 forms, speeding up compilation and FASL loading
2520 * bug fix: the statistical profiler now properly distinguishes anonymous
2523 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2524 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2525 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2526 into subclasses of the finalized class. Now user calls to
2527 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2528 system return before any subclasses are finalized.
2529 * minor incompatible change: The reader no longer ignores errors
2530 regarding non-existent packages in #+ and #- feature tests.
2531 * new feature: command line options --no-sysinit, --no-userinit to
2532 inhibit loading the corresponding init files
2533 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2534 for sending data through UDP sockets (thanks to François-René Rideau)
2535 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2536 error is signalled instead (thanks to François-René Rideau)
2537 * minor incompatible change: Error signalling behaviour of lexical
2538 operations violating package locks has changed slightly. Refer to
2539 documentation on package locks for details.
2540 * enhancement: EVAL can process IF-expressions without resorting to the
2542 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2543 constant-folded properly due to missing out-of-line functions.
2544 (reported by Mika Pihlajamäki)
2545 * bug fix: LISTEN sometimes returned T even in cases where no data was
2546 immediately available from the stream
2547 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2548 were reversed. (reported by Levente Mészáros)
2549 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2550 when given a vector displaced to an adjustable array. (reported
2552 * bug fix: derivation of float boundaries from numbers outside the
2553 appropriate float range (reported by John Wiseman)
2554 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2556 * bug fix: precomputing cache entries for generic functions with
2557 some subclasses of specializers as yet invalid does not attempt to
2558 fill a cache line with a negative offset. (reported by Levente
2560 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2561 allow condition class objects as arguments to DOCUMENTATION and
2562 (SETF DOCUMENTATION); only find and set documentation for
2563 structure names for the STRUCTURE doc-type. (suggested by Gary
2565 * improvements to the Win32/x86 port:
2566 ** (user-homedir-pathname) and default initialization file
2567 locations now know about the user's "Documents and Settings"
2568 directory (thanks to Yaroslav Kavenchuk)
2569 ** run-program is implemented (thanks to Mike Thomas)
2570 ** sockets support (thanks to Timothy Ritchey)
2571 ** better backtrace support (thanks to Alastair Bridgewater)
2572 ** sb-grovel supported
2573 ** asdf-install and sb-posix work somewhat
2574 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2575 * improvements to the Solaris/x86 port:
2576 ** works on Solaris 11/Solaris Express
2577 ** floating-point exception handling support
2578 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2579 * fixed some bugs revealed by Paul Dietz' test suite:
2580 ** REMOVE-METHOD returns its generic function argument even when
2581 the method is not one of the generic functions' methods.
2582 ** objects declared as MEMBER types can be admissible arguments to
2583 structure accessors.
2584 ** printing characters should simply be printed by the FORMAT ~:C
2586 ** compiler failure when compiling functions with hairy constant
2587 defaults for optional parameters.
2588 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2589 function, which is already optimized.
2591 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2592 * new platform: experimental support for SBCL x86/Darwin, including
2593 MacOS X 10.4.5 on Intel.
2594 * new feature: Unicode character names are now known to the system
2595 (through CHAR-NAME and NAME-CHAR).
2596 * new feature: the filesystem location of SBCL's core file is
2597 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2598 * minor incompatible change: the contrib modules SB-POSIX and
2599 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2600 this change is to make it easier to distribute
2601 location-independent binaries.
2602 * bug fix: as implied by AMOP, standardized classes no longer have
2603 slots named by external symbols of public packages. (reported by
2605 * optimization: calling functions via constant symbols -- as in
2606 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2607 via the function object as in (FUNCALL #'FOO).
2608 * optimization: on x86 and x86-64, the calling convention for the
2609 case of dealing with an unknown number of values has been altered
2610 to be friendlier to the prediction heuristics implemented,
2611 particularly with reference to CALL and RET pairing. (thanks to
2612 Alastair Bridgewater)
2613 * optimization: on x86, the code for access to thread-local symbol
2614 values and binding/unbinding of thread-local symbols is smaller.
2615 (thanks to Alastair Bridgewater)
2616 * enhancement: CONSTANTP is now able to determine constantness of
2617 more complex forms, including calls to constant-foldable standardized
2618 functions and some special forms beyond QUOTE.
2619 * fixed bug: occasional GC crashes on Solaris/x86
2620 * optimization: x86-64 supports stack allocation of results of simple
2621 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2622 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2623 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2624 (thanks to James Knight)
2625 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2626 by the standard (thanks to Stephen Compall)
2628 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2629 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2630 be used for bundling the runtime and the core file into one
2631 executable binary. This feature is not currently supported on all SBCL
2632 platforms. (thanks to James Bielman and NIIMI Satoshi)
2633 * new feature: a generational or ephemeral garbage collector is now
2634 the default on the PowerPC platform (both Linux and Darwin). The
2635 old Cheney (stop and copy) collector is a build-time option.
2636 (thanks to Cyrus Harmon, after Raymond Toy)
2637 * minor incompatible change: the method by which SBCL finds its
2638 contributed modules has changed; it no longer relies on symbolic
2639 links from an $SBCL_HOME/systems directory, but searches directly
2640 in the subdirectories of $SBCL_HOME.
2641 * enhancement: the dynamic heap size on the Linux/PPC platform is
2642 markedly larger, even using the older Cheney garbage collector.
2643 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2644 certain complicated string types. (reported by Gary King)
2645 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2646 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2647 * fixed bug: DOCUMENTATION on structures no longer signals an
2648 error if no structure type of the right name exists. (reported by
2650 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2651 applicable non-standard primary or :AROUND method on
2652 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2653 no longer cause unbound variable errors. (reported by Kevin Reid)
2654 * fixed bug: metacircle resolution in cases where methods have slots
2655 added before the slots from STANDARD-METHOD. (reported by Jean
2657 * fixed bug: the Power PC assembly code for calling into lisp
2658 sometimes computed its return address wrongly (depending on the
2659 15th bit of the address, fixed at link time). This used to
2660 manifest itself in a segmentation violation while building PCL.
2661 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2662 many others over the years)
2663 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2664 the stack pointer (treated as a signed integer) is negative.
2665 (thanks to Peter van Eynde)
2667 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2668 * new platform: experimental support for the Windows operating
2669 system has been added. (thanks to Alastair Bridgewater)
2670 * fixed several bugs in and robustified the PPC FFI (including
2671 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2672 * bug fix: allow non-simple string symbol names (reported by Paul
2674 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2676 * bug fix: saving a core corrupted callbacks on x86/x86-64
2677 * bug fix: closed a loophole in metacircularity detection and
2678 grounding in the PCL implementation of CLOS.
2679 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2680 (reported by tomppa on #lisp)
2681 * bug fix: clear the direction flag on Lisp -> C transitions, as
2682 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2683 (reported by Andrej Grozin and Hendrik Maryns)
2684 * optimization: major improvements to GC efficiency on GENCGC platforms
2685 * optimization: faster implementation of EQUAL
2686 * optimization: emit more efficient opcodes for some common
2687 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2688 * optimization: several other minor code-generation improvements on x86-64
2689 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2691 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2692 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2693 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2694 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2695 by ANSI as a generic function, and for consistency (SETF
2696 GENERIC-FUNCTION-NAME) is treated likewise.
2697 * fixed bug #233.b: make constraint propagation notice when a variable
2698 value is changed after it is referenced but before it is used
2699 * fixed bug #296: no more arbitrary behaviour from filenames with
2700 odd characters as --load arguments. (reported by Adam Warner)
2701 * fixed bug #390: :CHARACTER-SET pathname components now work as
2702 expected. (reported by Tim Daly Jr)
2703 * fixed bug #391: complicated :TYPE intersections in slot
2704 definitions no longer cause an error in PCL internals.
2705 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2706 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2707 returning the number of octets which would be written to the
2708 file-stream. (thanks to Robert J. Macomber)
2709 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2710 arguments to the internal stream functions. (thanks to David
2712 * bug fix: stack exhaustion is now handled on the x86/SunOS
2713 platform. (thanks to Daisuke Homma)
2714 * bug fix: more accurate ROOM results on GENCGC platforms
2715 * optimization: improved type inference for arithmetic-for
2716 index variables in LOOP
2717 * optimization: faster floating-point SQRT on x86-64
2718 * fixed some bugs revealed by Paul Dietz' test suite:
2719 ** DOCUMENTATION returns NIL instead of "" for method combinations
2720 that don't have a docstring
2722 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2723 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2724 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2725 therefore are not customizeable by user code (as seems to be at
2726 least permitted and maybe required by AMOP). As a consolation,
2727 however, the SBCL implementation of these functions now calls
2728 REINITIALIZE-INSTANCE as specified by AMOP.
2729 * bug fix: slot-definition documentation is propagated as per ANSI
2730 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2731 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2732 argument, as do eslotd initialization methods. (from Pascal
2733 Costanza's "Closer" project)
2734 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2735 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2737 * bug fix: it is now possible to have more than one subclass of
2738 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2739 (reported by Bruno Haible, Pascal Costanza and others)
2740 * bug fix: the dependent update protocol now works for generic
2741 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2742 and Pascal Costanza)
2743 * bug fix: condition-class instances corresponding to
2744 DEFINE-CONDITION forms are now created eagerly. (reported by
2745 Kalle Olavi Niemitalo on comp.lang.lisp)
2746 * bug fix: floating point printing is more accurate in some
2747 circumstances. (thanks to Simon Alexander)
2748 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2749 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2750 * bug fix: callbacks on OS X now preserve stack-alignment.
2751 (thanks to Cyrus Harmon)
2752 * enhancement: the x86-64 disassembler is much better at
2753 disassembling SSE instructions. (thanks to Lutz Euler)
2754 * enhancement: CHECK-TYPE on a variable now allows type-inference
2755 (thanks to Vincent Arkesteijn)
2756 * optimization: improved performance of EUC-JP external format.
2757 (thanks to NIIMI Satoshi)
2758 * optimization: performance improvements to IO on file streams of
2759 :ELEMENT-TYPE CHARACTER
2760 * optimization: much faster memory allocation on x86-64
2761 * optimization: faster garbage collections (latency and throughput)
2763 * optimization: faster bignum subtraction and division on x86 and x86-64
2764 (thanks to Lutz Euler)
2765 * optimization: more accurate type-inference for loops that use a
2766 floating point index variable or a negative step.
2768 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2769 * bug fix: add a workaround to SBCL looping infinitely at startup on
2770 Linux kernels with apparently buggy implementations of personality().
2771 (thanks to Svein Ove Aas)
2772 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2773 (thanks to David Lichteblau)
2774 * bug fix: local bindings shadow global symbol macros for
2775 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2776 * optimization: non-open coded uses of numeric comparison operators
2777 (e.g. >) no longer cons when called with more than one parameter
2778 on platforms supporting dynamic-extent allocation.
2779 * enhancement: saving cores with foreign code loaded is now supported
2780 on MIPS/Linux in addition to the previously supported platforms.
2781 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2782 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2783 * bug fix: division by zero in sb-sprof when no samples were collected
2784 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2785 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2786 (thanks to Alexander Kjeldaas)
2787 * new feature: ignoring the return values of destructive functions
2788 like NREVERSE signals a compile-time style-warning.
2789 (thanks to Kevin Reid)
2790 * new feature: the alignment of alien structure fields can be
2791 explicitly specified. (thanks to Cyrus Harmon)
2792 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2793 and dump core on SIGQUIT
2795 ** incompatible change: threads do not inherit values of specials
2796 from their parents (see manual)
2797 ** bug fix: threads stacks belonging to dead threads are freed by the
2798 next exiting thread, no need to gc to collect thread stacks anymore
2799 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2800 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2801 ** bug fix: dynamic variable and thread start related gc lossage
2802 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2804 * fixed some bugs revealed by Paul Dietz' test suite:
2805 ** SUBTYPEP is slightly more accurate on heinously complicated
2806 CONS types where some of the members have uncertain (in the
2807 NIL, NIL sense) type relationships to each other.
2809 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2810 no longer purified unless :PURIFY T is explicitly specified.
2811 ** Non-purified cores are significantly smaller than before
2813 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2814 * new feature: timers based on Zach Beane's excellent timer package
2815 * added support for the following external formats: koi8-u,
2816 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2817 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2818 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2819 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2820 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2821 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2822 * incompatible change: a threaded SBCL will no longer revert to
2823 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2824 * bug fix: interrupts are disabled until startup is complete; no
2825 more sigsegvs when receiving a signal to soon
2826 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2828 * bug fix: add a workaround for the memory randomization features in
2829 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2830 workaround will only be in effect on systems with the proc filesystem
2832 * bug fix: printing objects of type HASH-TABLE signals a
2833 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2835 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2836 have been running for over 50 days. (reported by Gilbert Baumann)
2837 * bug fix: the logic for getting names of functions gets less
2838 confused when confronded with alternate-metaclass
2839 funcallable-instances. (reported by Cyrus Harmon)
2840 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2841 consistent, even on internal alternate-metaclass objects.
2842 * bug fix: flush closure information collected by physical
2843 environment analysis prepass before the main pass. (bug reported
2845 * bug fix: compiler pack phase does not modify a hashtable, which is
2846 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2847 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2848 may be expanded. (reported by Alexander <malishev> on c.l.l)
2849 * bug fix: no more style-warnings when compiling code using LAST
2850 under high-SPEED low-SPACE settings. (reported by David Wallin
2852 * fixed some incompatibilities between SBCL's MOP and the MOP
2854 ** the METAOBJECT class is now implemented;
2855 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2856 STANDARD-OBJECT, as required;
2857 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2858 now compatible (as required by VALIDATE-SUPERCLASS); there
2859 remains a consistency requirement over the presence or absence
2860 of the FUNCTION class in the superclass list of finalized
2861 classes; see the manual for more details;
2862 ** the :AROUND method for COMPUTE-SLOTS on
2863 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2864 requested slot ordering.
2866 ** bug fix: parent thread now can be gc'ed even with a live
2868 ** bug fix: binding a special with PROGV to no value is not
2869 the same as that symbol not having been bound (thanks to
2871 ** bug fix: binding specials is thread safe (thanks to
2873 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2874 and SB-SPROF do not die with 'no handler for signal XX in
2875 interrupt_handle_now(..)' anymore
2876 ** bug fix: WITH-TIMEOUT works with multiple running threads
2877 * fixed some bugs revealed by Paul Dietz' test suite:
2878 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2879 the :method-class keyword argument.
2881 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2882 * new port: the Solaris operating system on x86 processors is now
2883 mostly supported, though some rough edges in the environment
2884 remain. (thanks to Daisuke Homma)
2885 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2886 space for its heap. (thanks to Thiemo Seufer)
2887 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2888 closures. (thanks to Thiemo Seufer)
2889 * minor incompatible change: eof selects abort in the debugger.
2890 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2891 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2893 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2894 deprecated, and will go away in a future revision of SBCL.
2895 * minor incompatible change: GC-ON and GC-OFF are no longer
2896 implemented with a counter, it does not matter how many times gc
2897 is switched on or off
2898 * bug fix: discriminating functions for generic function classes
2899 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2900 make invalid assumptions about method precedence order. (reported
2902 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2903 platforms. (thanks to Thiemo Seufer)
2904 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2905 * bug fix: correct pathname printing with printer escaping is on.
2906 (thanks to Kevin Reid)
2907 * bug fix: complex VOP definitions in "user-space" no longer trigger
2908 package locks. (reported by Zach Beane)
2909 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2910 for funcallable-instance functions, and is no different from
2912 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2913 characters in the current readtable. (reported by Nicholas Neuss)
2914 * bug fix: SUBTYPEP on various CONS types returns more a more
2915 accurate acknowledgment of its certainty.
2916 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2917 lists in some cases. This partially fixes bug 384.
2918 * flush all standard streams before prompting in the REPL and the
2920 * bug fix: signal handling and triggering gc do not conflict
2921 directly anymore, in particular a high frequency sb-sprof does
2922 not prevent gc from running
2923 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2924 approximation for timezone and DST information between the
2925 universal time epoch and the smallest negative 32-bit time_t.
2926 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2927 year 1899 so long as the encoded time is non-negative.
2928 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2929 the correct answer for non-constant rotate amounts when performing
2930 an inline 32-bit rotation.
2932 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2933 there is only one thread in the session
2934 ** bug fix: memory leak for streams created in one thread and
2935 written to in another
2936 ** bug fix: lockup when compiled with gcc4
2937 ** bug fix: race that allows the gc to be triggered when gc is
2939 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2940 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2942 ** bug fix: finished threads are gc'ed properly
2943 * fixed some bugs revealed by Paul Dietz' test suite:
2944 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2945 has arguments with a different set of applicable methods from
2946 the orignal arguments.
2947 ** The type error thrown by MAP now has a correct expected-type
2949 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2950 name a compiled function.
2951 ** Three MISC tests where a large bignum was improperly coerced to
2952 a float that couldn't represent that bignum during type
2953 derivation were fixed.
2954 ** SUBTYPEP can now handle types involving the negation of a
2955 list-form FUNCTION type.
2956 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2957 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2958 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2960 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2961 * New feature: Experimental support for bivalent streams: streams
2962 opened with :element-type :default now allow character and binary
2963 (unsigned-byte 8) I/O
2964 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2965 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2967 * bug fix: no more highly sporadic "couldn't check whether ~S is
2968 readable" when reading a stream and an interrupt hits in the middle
2969 of a select system call
2970 * compiler better recognizes complex arrays (reported by Eduardo
2972 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2973 for variables on SBCL built with linkage-tables. (reported by Luis
2975 * various error reporting improvements.
2976 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2977 (Thanks to Thiemo Seufer)
2978 * bug fix: nested reader invokations work correctly
2979 * bug fix: it is possible to have simultaneous references to foreign
2980 code and foreign data with the same name.
2982 ** added x86-64 support
2983 ** incompatible change: the threading api now works with thread
2984 objects instead of thread ids
2985 ** bug fix: threads are protected from signals and interruption when
2986 starting up or going down
2987 ** bug fix: a race where an exiting thread could lose its stack to gc
2988 ** bug fix: don't halt on infinite error in threads if possible
2989 ** fixed numerous gc deadlocks introduced in the pthread merge
2990 ** bug fix: fixed thread safety issues in read and print
2991 ** bug fix: debugger doesn't hang on session lock if interrupted at
2992 an inappropriate moment
2993 ** bug fix: run-program is now thread safe(r)
2994 ** bug fix: inner with-recursive-lock no longer releases the mutex
2995 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2996 * fixed some bugs revealed by Paul Dietz' test suite:
2997 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2998 EXPECTED-TYPE slots filled.
2999 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3001 ** MAKE-CONDITION accepts classes as type-designators.
3002 ** COMPILE may never return NIL.
3003 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3004 range before calling Unix time functions
3006 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3007 * numerous signal handling fixes to increase stability
3008 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3009 * minor incompatible change: we now correctly canonize default
3010 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3011 as per the MOP, rather than the historical (INITARG INITFUNCTION
3012 INITFORM). (reported by Bruno Haible)
3013 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3014 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3015 for more information.
3016 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3017 pathname is a directory pathname.
3018 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3019 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3021 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3022 :METACLASS argument in addition to a class name. (reported by
3023 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3024 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3025 (reported by Bruno Haible; patch from Gerd Moellmann)
3026 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3028 * bug fix: more cleanups to the floating point exception handling on
3029 x86-64 (thanks to James Knight)
3030 * bug fix: the compiler does not try to constant fold calls of
3031 COERCE and BIT-* functions when they return freshly constructed
3032 objects. (reported by Nikodemus Siivola and Paul Dietz)
3033 * optimization: improved the MIPS versions of generic (in the
3034 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3035 * optimization: direct conversion of (unsigned-byte 32) to floats on
3036 the PowerPC platform.
3037 * optimization: structure instances with raw slots now use less
3038 memory, and probably show better memory locality. (thanks to
3040 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3041 are treated as requests for stack allocation on the x86-64,
3042 Alpha-32, PPC and SPARC platforms.
3043 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3044 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3045 (thanks to Tony Martinez)
3047 ** gcing a dead thread can no longer lead to lockups
3048 ** threads block signals until they are set up properly
3049 ** errno is no longer shared by threads
3050 ** interrupt-thread restores the eflags register on x86
3051 ** fixed some lockups due to gc/thread interaction
3052 * fixed some bugs revealed by Paul Dietz' test suite:
3053 ** invalid dotted lists no longer raise a read error when
3054 *READ-SUPPRESS* is T
3055 ** signal an error if a symbol that names a declaration is used
3056 as the name of a type, or vice versa
3057 ** allow using the (declare (typespec var*)) abbreviation for
3058 (declare (type typespec var*)) with all type specifiers
3059 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3060 ** always return NIL from PPRINT-POP when OBJECT is NIL
3061 ** don't signal errors when pretty-printing malformed LABELS,
3062 FLET or MACROLET forms
3063 ** declarations in a DOLIST body are also in scope for the
3065 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3067 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3070 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3071 * fixed cross-compiler leakages that prevented building a 32-bit
3072 target with a 64-bit host compiler.
3073 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3074 opened with :IF-EXISTS :OVERWRITE.
3075 * fixed bug 281: error for an invalid qualifier in a short-form method
3076 combination method is not signalled until the faulty method is called.
3077 * bug fix: iteration variable type inferrer failed to deal with open
3078 intervals. (reported by Alan Shields)
3079 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3080 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3081 or more runtime options were provided to the sbcl binary.
3082 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3083 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3084 * optimization: there's now a fast-path for fixnum arguments in the
3085 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3086 * optimization: the code generated on x86-64 is more compact thanks
3087 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3088 * bug fix: floating-point exception handling now partly works on
3089 x86-64. (Thanks to James Knight)
3090 * improvement to the MIPS backend from Thiemo Seufer: C-style
3091 64-bit long long arguments and return values to alien functions
3093 * fixed some bugs revealed by Paul Dietz' test suite:
3094 ** the type-error signalled from WARN has a filled-in DATUM slot.
3095 ** the type-error required when a stream is not associated with
3096 a file has the stream as its datum.
3097 ** type-errors on single-floats on x86-64 no longer have
3098 :INVALID-OBJECT as the datum
3099 ** the type-errors signalled for invalid function names now have
3100 a correct expected type
3101 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3102 for structures defined with a :TYPE. Documentation strings for
3103 typed structures are no longer immediately discarded
3104 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3105 broadcast streams and synonym streams. FILE-LENGTH now also works
3106 on broadcast streams.
3108 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3109 * incompatible change: the --noprogrammer option, deprecated since
3110 version 0.7.5, has been removed. Please use the equivalent
3111 --disable-debugger option instead.
3112 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3114 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3115 inoperational for a while now) has been completely removed.
3116 * null lexical environments are now printed as #<NULL-LEXENV>,
3117 significantly reducing the amount of clutter in typical backtraces.
3118 * documentation on weak pointers, finalization, and after GC hooks
3119 has been added to the manual.
3120 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3121 as other specialized array types, is much faster. SUBSEQ and
3122 COPY-SEQ on such arrays have also been sped up.
3123 * optimization: EQL is now more efficient when at least other argument
3124 is known to be of type (OR FIXNUM (NOT NUMBER)).
3125 * fixed bug: the runtime is now less vulnerable to changes in the
3126 size of the SBCL object on OS X, and virtual memory is reserved for
3127 all spaces that need to be at a fixed address.
3128 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3129 * fixed bug: finalizers and after GC hooks that cause consing are now
3131 * fixed bug: compiler error messages and summaries are now printed to
3132 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3133 * fixed inference of the upper bound of an iteration variable.
3134 (reported by Rajat Datta).
3135 * fixed bug 211e: calling local functions with duplicated constant
3136 keyword argument no longer causes a bogus style warning about an
3138 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3139 ftype declaration to be disregarded. (reported by Dave Roberts)
3140 * fixed bug 373: caused by erronous compilation of references to alien
3141 variables in the runtime on ppc/darwin.
3142 * fixed bug 376: CONJUGATE type deriver.
3143 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3144 (reported by Baughn on #lisp)
3145 * a cross-compiler bug on non-x86 platforms has been identified and
3146 fixed. (thanks to Bruno Haible)
3147 * improvements to the MIPS runtime code for increased stability.
3148 (thanks to Thiemo Seufer)
3149 * increased the maximimum compact environment size to allow
3150 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3151 * partial workaround for bug 135: don't name the function we're
3152 calling for hairy cases of EVAL, so as not to accumulate one environment
3153 entry per call to EVAL. (reported by Kevin Reid)
3154 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3155 * optimization: type testing for non-vector arrays should be faster.
3156 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3158 * bug fix: setting 31st element of a bit vector to zero did not work
3160 * bug fix: redefining a class definition which failed due to a
3161 previous accessor / function clash now works (but see BUGS entry
3162 #380 for more problems in this area). (thanks to Zach Beane)
3163 * the long form of DEFINE-METHOD-COMBINATION disables method group
3164 checking when given a single method group with pattern *. (thanks
3166 * on x86 compiler supports stack allocation of results of simple
3167 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3168 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3169 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3170 * fixed some bugs related to Unicode integration:
3171 ** the restarts for recovering from input and output encoding
3172 errors only appear when there is in fact such an error to
3174 * fixed some bugs revealed by Paul Dietz' test suite:
3175 ** MISC.549 and similar: late transformation of unsafe type
3176 assertions into derived types caused unexpected code
3178 ** SCALE-FLOAT type deriver is less wrong.
3179 ** type derivers for EXP, LOG and similar functions compute result
3180 types for complex arguments better.
3181 ** (MISC.563) CONJUGATE type deriver works for very restricted
3183 ** out-of-line type testers for character strings are available.
3184 ** EQUAL compiler transform understands specialness of objects
3186 ** accessing double-floats stored on the stack now works on x86-64.
3187 ** debugger internals could sometimes create invalid lispobjs,
3188 resulting in GC crashes.
3189 ** MISC.548: type check weakening can convert required type into
3191 ** initialization forms for bindings are not in scope of free special
3194 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3195 * incompatible change: thread support for non-NPTL systems has
3196 been removed - locking is buggy and unreliable. A threaded
3197 SBCL build will now warn at startup and refuse to create
3198 new threads, unless futex support is detected in the kernel
3199 * incompatible change: the top level REPL now has only an ABORT
3200 restart associated with it, not TOPLEVEL and ABORT as it used to.
3201 TOP and TOPLEVEL are now available as debugger commands for
3202 returning to the top level.
3203 * incompatible change: forms evaluated in the REPL now use the
3204 global optimization policy.
3205 * incompatible change: user- and system-initialization files are
3206 no longer processed with LOAD, but by READ and EVAL; hence the
3207 global optimization policy, startup package, readtable, etc,
3209 * The .fasl file format number has been incremented because of
3210 various incompatible changes.
3211 * internal entry point details and argument counts no longer appear
3212 in backtraces unless explicitly requested by setting
3213 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3214 * built-in and standard functions no longer have names like "top
3215 level local call to FOO".
3216 * fixed bug 32: functions defined in non-null lexical environments
3217 now have more legible printed representation
3218 * fixed bug 33: functions defined in non-null lexical environemnts
3219 are now more amenable to inspection by INSPECT.
3220 * workaround for bug 354: XEPs no longer appear in backtraces unless
3221 explicitly requested.
3222 * fixed bug: receiving the signal which results from attempting to
3223 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3224 SIGBUS on other *BSDs) on architectures where the C stack is also
3225 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3226 to debugger confusion or wild instability. (reported by Cheuksan
3228 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3229 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3230 (reported by Lutz Euler)
3231 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3232 compiled code. (reported by Paul Dietz)
3233 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3234 specialized parameter to a method to something that is not TYPEP
3235 the specializer is now possible.
3236 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3237 face of package deletion.
3238 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3239 pathname. (reported by David Tolpin on c.l.l)
3240 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3241 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3242 STRING-STREAM and FILE-STREAM, respectively.
3243 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3244 than previously; in addition, its test suite is now run on build.
3245 (thanks to Luke Gorrie)
3246 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3247 * optimization: added a immediate representation for single-floats
3249 * fixed some bugs revealed by Paul Dietz' test suite:
3250 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3251 ** attempting to create a package with a colliding nickname causes
3252 correctable errors to be signalled.
3253 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3254 ** several x86-64 backend bugs related to sign-extension of immediate
3257 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3258 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3259 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3261 * fixed loading of multiply forward-referenced layouts.
3262 (thanks to Cheuksan Wang)
3263 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3264 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3265 (see COMPILE-FILE documentation for details of :PRINT option)
3266 * fixed bugs 19 and 317: fixed-format floating point printing is
3267 more accurate. This also fixes a bug reported by Adam Warner
3268 related to the ~@F format directive.
3269 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3271 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3272 dispatch table if the from-char is a dispatch macro character.
3273 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3274 by the wordsize no longer ignore the last word. (reported by Lutz
3276 * fixed bug in type checking of dynamic-extent variables. (reported
3278 * optimization: sequence traversal functions use their freedom to
3279 coerce function designators to functions.
3280 * optimization: code with many calls to CLOS methods specialized on
3281 CLOS classes has had redundant type checks removed.
3282 * optimization: added declarations to speed up operations that access
3283 the internal character database (for example STRING-UPCASE)
3284 * optimization: comparison operations between floats and sufficiently small
3285 fixnums no longer create extra rationals
3286 * fixed some bugs related to Unicode integration:
3287 ** portions of multibyte characters at the end of buffers for
3288 character-based file input are correctly transferred to the
3289 start of the buffer at the next read.
3290 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3291 passing it through to OPEN.
3292 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3293 argument given to internal calls to OPEN.
3294 ** the built-in comment readers (introduced by character sequences
3295 ";" and "#|") are more forgiving to encoding errors; they will
3296 STYLE-WARN and then attempt to resync the stream at a character
3297 boundary. (thanks to Teemu Kalvas)
3298 * fixed some bugs in the x86-64 port:
3299 ** Negative short int return values from c-calls are sign-extended
3301 ** The stack is aligned to 16-bytes for c-calls, as required by
3302 the ABI. (thanks to Cheuksan Wang)
3303 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3304 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3305 for enums. (thanks to Vincent Arkesteijn)
3306 ** Multiple small optimizations and bugfixes for floating point
3308 * fixed some bugs revealed by Paul Dietz' test suite:
3309 ** Space, Tab, Linefeed, Return and Page have the invalid
3310 secondary constituent character trait.
3311 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3313 ** WITH-INPUT-FROM-STRING should only update the index place on
3315 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3316 works more reliably.
3317 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3318 with one-dimensional arrays with fill pointers.
3319 ** TYPE-OF failed on a complex with an integer realpart and a
3321 ** compiler failure during type inference for the code of form
3322 (IF (EQL X (THE ...)) ...) (MISC.535).
3324 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3325 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3326 platform. The port supports 61-bit fixnums, large memory spaces
3327 and reloading shared object files.
3328 * enhancement: saving cores with foreign code loaded is now
3329 supported on ppc/Darwin in addition to the previously supported
3331 * enhancement: the statistical profiler now walks deeper into the
3332 call stack for more meaningful call-graphs and accrued time
3333 reports (x86/x86-64 only). It also now reports time spent in
3335 * enhancement: it is now possible to trace most individual methods
3336 of a generic function in addition to tracing the generic function
3338 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3340 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3341 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3342 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3343 produces an error. (thanks to Vincent Arkesteijn)
3344 * bug fix: NAMESTRING on pathnames with :WILD components in their
3345 directories works correctly. (thanks to Artem V. Andreev)
3346 * fixed bug 125: compiler preserves identity of closures. (reported
3348 * bug fixed: functions with &REST arguments sometimes failed with
3349 "Undefined function" when compiled with (DEBUG 3). (reported by
3351 * bug fix: overflow during compiling of setting element of a bit
3352 vector with constant index and value. (reported by Timmy Douglas)
3353 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3354 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3355 * on x86 compiler partially supports stack allocation of dynamic-extent
3357 * GO and RETURN-FROM do not check the extent of their exit points
3358 when compiled with SAFETY 0.
3359 * fixed some bugs related to Unicode integration:
3360 ** encoding and decoding errors are now much more robustly
3361 handled; it should now be possible to recover even from invalid
3362 input or output to the terminal. (thanks to Teemu Kalvas)
3363 ** provided a first cut at implementing STRING-TO-OCTETS and
3364 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3365 ** altered the SB-MD5 contributed module slightly, changing the
3366 interface just enough for it to be supportable for builds where
3367 lisp characters are not eight bits.
3368 * fixed some bugs revealed by Paul Dietz' test suite:
3369 ** the FORMATTER-generated functions for ~V[ conditionals require
3370 the correct number of arguments.
3371 ** READ-FROM-STRING returns the mandated second value when applied
3372 to displaced strings.
3373 ** the #\Rubout and #\Backspace characters are treated as invalid
3374 constituent characters by the tokenizer.
3376 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3377 * new feature: reloading changed shared object files with
3378 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3379 * new feature: references to foreign variables and functions
3380 can now be compiled and loaded before the corresponding shared
3381 object file is loaded, as long as the foreign definitions are
3382 available at runtime.
3383 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3384 supported. (thanks to Dan Debertin)
3385 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3386 just keywords. (thanks to Vincent Arkesteijn)
3387 * fixed bug #331: structure-class instances corresponding to
3388 DEFSTRUCT forms are now created eagerly.
3389 * fixed bug #345: backtraces from calls to undefined functions work
3390 on x86 as well. Related bug #61 is now also partially fixed on x86
3391 (backtraces from throws to unknown catch tags.)
3392 * bug fix: lambda-list parsing is now stricter vrt. order and number
3393 of lambda-list keywords.
3394 * bug fix: as specified by AMOP, an error is signalled if a
3395 class-option appears multiple times in a DEFCLASS form. (reported
3397 * bug fix: RANDOM can be compiled when the compiler derives the type
3398 of its numeric argument as a disjoint set of small integers.
3399 (reported by Paul Dietz)
3400 * bug fix: starting a core saved with shared objects loaded when
3401 those objects are not available no longer causes threaded SBCL to
3402 hang. (reported by Sean Ross)
3403 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3405 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3406 argument, which must always be NIL. (reported by Kalle Niemitalo)
3407 * bug fix: printing 1.0d+23 no longer results in an error.
3408 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3409 * bug fix: structure slot setters preserve evaluation order. (thanks
3411 * fixed some bugs related to Unicode integration:
3412 ** RUN-PROGRAM can allow its child to take input from a Lisp
3413 stream. (reported by Stefan Scholl)
3414 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3415 locales. (reported by Ken Causey)
3416 * fixed some bugs revealed by Paul Dietz' test suite:
3417 ** INCF, DECF and REMF evaluate their place form as specified in
3419 ** FORMATTER expands ~{ ~} iteration directives with V or #
3420 parameters correctly.
3421 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3422 consequent uses no arguments correctly.
3423 ** the system has a partial understanding of the (COMPLEX RATIO)
3425 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3428 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3429 * new feature: a build-time option (controlled by the :SB-UNICODE
3430 keyword feature, enabled by default) for building the system with
3431 support for the entire 21-bit character space defined by the
3433 * new feature: the system now has rudimentary external-format
3434 support; the primary user-visible change at this time is that
3435 characters with the high bit set (such as lower-case-e-acute) will
3436 print correctly to a terminal in a UTF-8 environment.
3437 * minor incompatible change: BASE-CHAR no longer names a class;
3438 however, CHARACTER continues to do so, as required by ANSI.
3439 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3440 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3441 has been moved to the SB-EXT package (temporarily re-exported from
3443 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3444 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3446 * fixed bug #351: better error-handlind and reporting for malformed
3448 * fixed bug #350: bignum-printing is now more memory-efficient,
3449 allowing printing of very large bignums, eg. (expt 2 10000000).
3450 (reported by Bruno Haible)
3451 * fixed bug #302: better primitive-type selection for intersection
3453 * fixed bug #308: non-graphic characters now all have names, as
3454 required. (reported by Bruno Haible)
3455 * bug fix: redefining a class with different superclasses now correctly
3456 removes it from the direct-subclasses of its previous superclasses.
3457 (reported by David Morse)
3458 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3459 new value now works. (reported by Bruno Haible)
3460 * bug fix: correct canonicalization of multiple non-standard slot
3461 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3462 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3463 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3464 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3465 now exists, an signals an error.
3466 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3467 during macroexpansion for non-iteration variables as well. (reported
3468 by Bruno Haible for CMUCL)
3469 * bug fix: Cyclic structures and unprintable objects in compiler
3470 messages no longer cause errors. (reported by Bruno Haible)
3471 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3472 and READ-FROM-STRING all now return a primary value of NIL if
3473 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3474 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3475 (reported by Bruno Haible for CMUCL)
3476 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3477 do not designate a condition. (reported by Bruno Haible for
3479 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3480 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3481 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3482 permitting resolution in favour of any of the conflicting symbols.
3483 (reported by Bruno Haible for CMUCL)
3484 * bug fix: EQUAL compiler optimizations is less aggressive on
3485 strings which can potentially compare true despite having distinct
3486 specialized array element types.
3487 * bug fix: unit enumerations can be defined without dividing by
3488 zero. (thanks to Vincent Arkesteijn)
3489 * FORMAT compile-time argument count checking has been enhanced.
3490 (report from Bruno Haible for CMUCL)
3491 * a partial workaround for the bug 262: the compiler does not try to
3492 inline-expand a local function doing RETURN-FROM from a deleted
3493 BLOCK. (thanks to Peter Denno for the bug report and to David
3494 Wragg for the simple test case)
3495 * fixed some bugs revealed by Paul Dietz' test suite:
3496 ** RENAME-PACKAGE allows all package designators as new package
3498 ** constraint propagation and lambda variable substitution are
3499 more cautious in dealing with partially deleted code.
3500 ** compiler sometimes lost reoptimization passes.
3501 ** CERROR, given a condition as condition designator, passes its
3502 remaining arguments to the continue format control without
3504 ** Case-altering FORMAT directives work correctly on non-ASCII
3506 ** The REAL type specifier handles bounds outside the floating
3507 point ranges without signalling FLOATING-POINT-OVERFLOW.
3508 ** Functions with IR1-transformations can create intercomponent
3509 references to global functions.
3510 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3512 ** FORMAT ~R treats a nil value for its first parameter correctly.
3514 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3515 * enhancement: saving cores with foreign code loaded is now
3516 supported on x86/NetBSD and sparc/Linux in addition to the previously
3517 supported platforms.
3518 * bug fix: on some platforms repeated installations caused multiple
3519 copies of HTML documentation to be installed -- should not happen
3520 any more. (reported by Stefan Scholl)
3521 * bug fix: parsing self-recursive alien record types multiple times
3522 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3523 original patch by Helmut Eller for CMUCL)
3524 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3525 (thanks to Richard Kreuter)
3526 * bug fix: defining classes whose accessors are methods on existing
3527 generic functions in other (locked) packages no longer signals
3528 bogus package lock violations. (reported by François-René Rideau)
3529 * bug fix: special variables as DEFMETHOD parameters no longer have
3530 associated bogus type declarations. (reported by David Wragg and
3532 * bug fix: read-write consistency on streams of element-type
3533 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3534 * bug fix: redefiniton of the only method of a generic function with
3535 no DEFGENERIC no longer emits a full WARNING. In addition,
3536 redefinition of generic functions with no DEFGENERIC to an
3537 incompatible lambda list now signals an error. (thanks to Zach
3539 * bug fix: DEFGENERIC now works even when there's a function of the
3540 same name in an enclosing lexical environment. (thanks to Zach
3542 * fixed compiler failure, caused by instrumenting code during
3543 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3544 * optimization: added loop analysis and improved register allocation
3545 * fixed some bugs revealed by Paul Dietz' test suite:
3546 ** POSITION on displaced vectors with non-zero displacement
3547 returns the right answer.
3548 ** (SIMPLE-STRING) is a valid type specifier for sequence
3550 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3552 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3553 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3555 ** The justification version of the FORMAT ~< directive treats
3556 non-zero minpad parameter correctly.
3558 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3559 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3560 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3561 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3562 the supported interface.
3563 * new feature: Single-stepping of code compiled with DEBUG 2 or
3564 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3565 * new feature: saving cores with foreign code loaded is now
3566 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3567 Timothy Moore's work for CMUCL)
3568 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3569 parameters to * instead of NIL if no initform is supplied.
3570 (reported by Johan Bockgaard)
3571 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3572 correctly when FUNCALL appears as the car of the form. Note:
3573 despite this FUNCALL forms are not currently subject to
3574 compiler-macro expansion. (port of Raymond Toy's fix for the
3575 same from CMUCL, reported by Johan Bockgaard)
3576 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3577 (thanks for Teemu Kalvas)
3578 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3579 case instead of terminating the iteration (thanks for Julian
3580 Squires, Sean Champ and Raymond Toy)
3581 * bug fix: incorrect expansion of defgeneric that caused a style
3582 warning. (thanks for Zach Beane)
3583 * bug fix: slot accessor effective method computation works properly
3584 for classes with multiple non-standard applicable methods on
3585 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3586 * on x86 compiler supports stack allocation of results of LIST and
3587 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3588 CMUCL implementation by Gerd Moellmann)
3589 * fixed some bugs revealed by Paul Dietz' test suite:
3590 ** FORMAT strings with both the ~<~:;~> form of the justification
3591 directive and pretty-printing directives cause an error.
3593 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3594 * incompatible change: the internal functions
3595 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3596 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3597 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3598 instead of the old functions.
3599 * new feature: on platforms where "dladdr" is available foreign
3600 function names now appear in backtraces. (based on Helmut Eller's
3602 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3603 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3605 * documentation: ASDF manual is now distributed with SBCL.
3606 * bug fix: SBCL can now load its contributed modules with REQUIRE
3607 even if the system-provided entries have been removed from
3608 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3610 * bug fix: backtraces involving undefined functions or assembly
3611 routines are more informative. (thanks to Brian Downing)
3612 * bug fix: mutually referent alien structures now work correctly.
3613 (reported by Rick Taube)
3614 * bug fix: structures defined by WITH-ALIEN can be referred to
3615 within other definitions in the same WITH-ALIEN.
3616 * bug fix: division operators (MOD, TRUNCATE and the like) with
3617 constant zero divisors and integer dividends no longer generate
3619 * bug fix: provide default methods for INPUT-STREAM-P and
3620 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3621 * bug fix: improve the detection and resolution of MOP metacycles
3622 (where effective method computation depends on the generic function
3623 having its effective method computed). (reported by Bruno Haible)
3624 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3625 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3626 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3627 * bug fix: pathnames with relative directory components can be
3628 represented relative to default pathnames.
3629 * optimization: in taking the GCD of bignums, reduce the two bignums
3630 to approximately the same size (using Euclid's algorithm) before
3631 applying the more sophisticated binary GCD. (thanks to Juho
3633 * optimization: COUNT on bitvectors now operates word-at-a-time.
3634 * optimization: ASH with a positive, but not necessarily constant,
3635 (leftwards) shift, when in a modular context, is compiled to a
3637 * fixed some bugs revealed by Paul Dietz' test suite:
3638 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3639 if the corresponding argument is NIL.
3640 ** FORMAT directives accepting a minpad parameter treat negative
3642 ** literal commas as character parameters to FORMAT directives are
3644 ** literal spaces directly after ~<Newline> directives within a
3645 format-logical-block (~:< ~@:>) do not induce :FILL-style
3646 conditional newlines.
3647 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3648 as specified: it no longer includes conditional newlines).
3649 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3651 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3652 :PER-LINE-PREFIX argument does not evaluate to a string.
3654 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3655 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3656 the manual for details; for now, package locks can be disabled by
3657 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3658 if no major problems are found then it is likely that they will be
3659 compiled in unconditionally.
3660 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3661 unsupported operators on all platforms. To load a shared library
3662 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3663 object file, link it into a shared library outside of SBCL and
3664 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3666 * bug workaround: ROOM T and the GC were not working together
3667 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3668 reporting facility aren't preserved. That reporting has been
3669 disabled, so now until and unless someone figures out how to make it
3670 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3671 * minor incompatible change: as threatened around sbcl-0.8.0, the
3672 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3673 The symbols are also exported from SB-PCL for backwards
3674 compatibility, but more so than before SB-PCL should be treated as
3675 an implementation-internal package.
3676 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3678 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3679 It is known as of this release not to work on the Alpha, however.
3680 * fixed bug #167: errors signalled due to illegal syntax in method
3681 bodies are now more legible.
3682 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3683 designators and can hence be used with TYPEP.
3684 * fixed bug #333: CHECK-TYPE now ensures that the type error
3685 signalled, if any, has the right object to be accessed by
3686 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3687 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3688 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3690 * fixed bug #334: programmatic addition of slots using specialized
3691 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3692 and :ALLOCATION :CLASS slots.
3693 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3694 float exponents. (rereported by Peter Seibel)
3695 * fixed a bug: #\Space (and other whitespace characters) are no
3696 longer considered to be macro characters in standard syntax by
3697 GET-MACRO-CHARACTER.
3698 * fixed bug: initialization of condition class metaobjects no longer
3699 causes an instance of the condition to be created. (reported by
3701 * fixed bug: it is now possible to have slots such that
3702 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3703 description is neither :INSTANCE nor :CLASS.
3704 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3705 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3706 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3707 non-standard SLOT-DEFINITION-ALLOCATION values.
3708 * fixed bugs: various race conditions handling exiting threads.
3709 CL-PPCRE's thread torture test now passes.
3710 * fixed arguably-a-bug: GC time proportional to number of threads in
3711 system even when most of them are idle
3712 * optimization: improved performance of BIT and SBIT on bit-vectors.
3713 * .fasl file incompatibility: The fasl file version number has
3714 been incremented because of changes associated with package locks.
3716 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3717 * minor incompatible change: the system no longer provides
3718 optimization hints (conditions which are TYPEP
3719 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3720 mode; these hints are still emitted when higher SPEED optimization
3722 * new contrib module: a sampling profiler (profiling by statistical
3723 sampling, rather than by instrumenting functions) is available as
3724 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3725 * the behaviour of the standard function ED is now customizeable by
3726 third parties through a hook variable: see ED's documentation
3727 string for information on the protocol.
3728 * the compiler no longer emits efficiency notes for (FUNCALL X)
3729 when the type of X is uncertain under default optimization
3731 * fixed bug 276: mutating a binding of a specialized parameter to a
3732 method to something that is not TYPEP the specializer is now
3734 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3735 exhibit the required behaviour on the x86 platform. (thanks to
3736 Peter van Eynde, Eric Marsden and Bruno Haible)
3737 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3738 even for difficult arguments. (reported by Peter Graves)
3739 * fixed bug 141a: the backquote printer now descends quoted
3741 * fixed another bug in backquote printing: no more destructive
3742 modification of the form's list structure. (reported by Brian
3744 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3745 move between its address being taken and the call to
3746 interrupt_thread, fixing a crashing race condition.
3747 * the SB-POSIX contrib implementation has been adjusted so that it
3748 no longer exhibits ridiculously poor performance when constructing
3749 instances corresponding to C structs.
3751 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3752 * minor incompatible change: the sb-grovel contrib now treats C
3753 structures as alien (in the sense of SB-ALIEN) objects rather than
3754 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3755 has implications for memory management of client code
3756 (sb-grovel-returned objects must now be manually managed) and for
3757 type safety (alien objects now have full types).
3758 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3759 used to control emission of compiler diagnostics, rather than the
3760 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3761 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3762 quality should be considered deprecated.
3763 * install.sh now installs the user manual as well
3764 * (not quite a new documentable feature, but worth considering in
3765 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3766 beginnings of a semantically meaningful condition hierarchy is
3767 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3769 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3770 designator as the defaults argument.
3771 * fixed bug: Displaced arrays whose displaced-to array has become
3772 too small now cause ARRAY-DIMENSION to signal an error, providing
3773 for safer bounds-checking. (reported by Bruno Haible)
3774 * fixed bug: DEFCLASS slot definitions with identical :READER and
3775 :WRITER names now signal a reasonable error. (reported by Thomas
3777 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3779 * fixed bug: Invalid slot specification errors now print correctly.
3780 (thanks to Zach Beane)
3781 * fixed bug 320: Shared to local slot value transfers in class
3782 redefinitions now happen corrently from superclasses as
3783 well. (reported by Bruno Haible)
3784 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3786 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3787 improper lists correctly. (reported by Bruno Haible)
3788 * fixed bug 313: source-transform for <fun-name> was erroneously
3789 applied to a call of a value of a variable with name <fun-name>.
3790 (reported by Antonio Menezes Leitao)
3791 * fixed bug 307: The obsolete instance protocol ensures that
3792 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3793 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3794 remove dead unknown-values globs from the middle of the stack.
3795 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3796 easier to resume long computations after using *BREAK-ON-SIGNALS*
3797 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3798 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3799 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3800 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3801 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3802 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3804 * fixed a (fairly theoretical) bug in string printing: if
3805 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3806 does not have array-element-type equal to the most general string
3808 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3809 function name. (thanks to Nikodemus Siivola)
3810 * fixed bug: compile-time format string checker failed on
3811 non-closed ~{. (reported by Thomas F Burdick)
3812 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3813 don't warn on legal loop code involving more than one aggregate
3814 boolean. (thanks to Nikodemus Siivola)
3815 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3816 in keyword position to MAKE-PACKAGE was not being reported as
3818 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3819 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3821 * fixed bugs 280 and 312: the checking for multiple definitions in a
3822 file is less likely to become confused by uses of inline
3824 * fixed bug: the #S reader macro performs the keyword coercion
3825 specified for slot names. (reported by Kalle Niemitalo)
3826 * fixed bug: lambda lists may contain symbols whose names start with
3827 & but are not lambda-list-keywords; their occurrence triggers a
3829 * fixed bug 321: define-method-combination argument lambda lists do
3830 not cause invalid code to be generated when &optional or &aux
3831 variables have default values. (reported by Bruno Haible)
3832 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3833 have CLOS classes; this appears also to have fixed reported
3834 instability in stack exhaustion detection.
3835 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3836 MUFFLE-WARNING when no associated restart is present is now
3838 * optimization: rearranged the expansion of various defining macros
3839 so that each expands into only one top-level form in a
3840 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3842 * optimization: used a previously little-used slot in symbols to
3843 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3845 * fixed some bugs revealed by Paul Dietz' test suite:
3846 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3848 ** Fixed an optimization bug related to inheritance of initforms
3849 from local to shared slots.
3850 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3851 ** CAST optimizer forgot to flush argument derived type.
3852 ** print/read consistency on floats is now orders of magnitude
3853 more likely. (thanks also to Bruno Haible for a similar report
3855 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3856 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3857 for objects of type REAL. Make it so.
3858 ** SXHASH is specified (infelicitously) to respect similarity,
3859 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3860 it so. (thanks to Markus Ziegler)
3861 ** on the Alpha, the compiler succeeds in compiling functions
3862 returning a known number of arguments greater than 63.
3863 ** fixed handling of invalid NIL arguments in keyword position
3865 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3867 ** provided a readably-printable representation for RANDOM-STATE
3869 ** ensured that pathnames, where they have a namestring, always
3870 print using #P"..." syntax.
3872 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3873 * Support for the forthcoming 2.0 version of the NetBSD kernel
3874 running on x86 hardware has been added. (thanks to Perry
3875 E. Metzger most immediately, and others for their past work)
3876 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3877 current release version; SBCL's OpenBSD support had been broken
3878 since about the time of OpenBSD's switch to ELF binary format.)
3879 * [placeholder for DX summary]
3880 ** user code with &REST lists declared dynamic-extent, under high
3881 speed or space and low safety and debug optimization policy.
3882 * The manual has been converted to Texinfo format and the debugger
3883 chapter from the cmucl manual has been added.
3884 * A facility has been added to extract documentation strings from
3885 sbcl and store them as Texinfo-formatted snippets for inclusion in
3886 the manual (via Texinfo's @include directive)
3887 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3888 the test case to Dave Roberts)
3889 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3890 pointers. (reported by Sean Ross)
3891 * bug fix: PROFILE output is printed nicely even for large numerical
3892 values. (thanks to Zach Beane)
3893 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3894 greater than 32 handle EOF correctly.
3895 * bug fix: on X86 an immediate argument of the IMUL instruction is
3896 correctly printed in disassembly. (thanks to Lutz Euler)
3897 * bug fix: class slots in redefined classes preserve their old
3898 values. (thanks to Bruno Haible and Nikodemus Siivola)
3899 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3900 succeeds. (reported by Marco Baringer)
3901 * fixed some bugs revealed by Paul Dietz' test suite:
3902 ** READ-SEQUENCE now works on ECHO-STREAMs.
3903 ** RATIONALIZE works more according to its specification. (thanks
3906 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3907 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3908 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3909 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3910 should matter to you only if you rebind the printer control
3911 variables and then find you want different bindings in the
3912 debugger than in the ordinary execution of your program.)
3913 * The runtime build system has been tweaked to support building
3914 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3915 assembler and linker. (thanks to Nikodemus Siivola)
3916 * Unbound, undefined, undeclared variables now trigger full
3917 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3918 more often programmer error than deliberate exploitation of undefined
3920 * optimization: the hash algorithm for strings has changed to one
3921 that is less vulnerable to spurious collisions. (thanks to Juho
3923 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3924 needless bounds checking. (thanks to Juho Snellman)
3925 * optimization: implemented multiplication as a modular
3926 (UNSIGNED-BYTE 32) operation on the PPC backend.
3927 * fixed some bugs revealed by Paul Dietz' test suite:
3928 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3930 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3931 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3932 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3934 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3936 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3938 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3939 their output stream on EOF from read.
3940 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3941 have been read to end-of-file.
3942 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3944 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3945 description of determination of which consecutive characters
3947 ** Printing the "Space" character with escaping on now yields "#\\ ",
3948 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3949 ** Reading floating-point numbers with *READ-BASE* set to a number
3950 less than 10 works correctly.
3951 ** Reading floating-point numbers with *READ-BASE* set to a number
3952 more than 10 works correctly.
3953 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3954 the readtable currently in effect.
3956 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3957 * minor incompatible change: parsing of namestrings on a physical
3958 (Unix) host has changed; numbers after the final #\. in a
3959 namestring are no longer interpreted as a version field. This is
3960 intented to be largely invisible to the user, except that the
3961 meaning of the namestring "*.*.*" has changed: it now refers to a
3962 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3963 should usually be replaced by
3964 (make-pathname :name :wild :type :wild :version :wild)
3965 with the added benefit that this is more likely to be portable.
3966 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3967 option to OPEN now signals an error if the file being opened
3968 exists; this may have an impact on existing code.
3969 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3970 signals received, on the PowerPC platforms (both Linux and
3971 Darwin). (thanks to Pierre Mai for pointing out the location of
3973 * several fixes on OS X: The system now builds and runs cleanly on
3974 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3975 (thanks to Brian Mastenbrook)
3976 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3977 second-resolution: integer multiples of 1/3600 between -24 and 24.
3978 (thanks to Vincent Arkesteijn)
3979 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3980 type when called with 1 argument; PEEK-CHAR checked type of
3981 PEEK-TYPE only after having read first character from a
3982 stream. (reported by Peter Graves)
3983 * bug fix: the garbage collector now has much better locality
3984 behaviour, and in particular no longer treats all memory as being
3985 exhausted when many small objects point to each other in a deeply
3987 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3988 recognized as being TYPEP their class.
3989 * bug fix: the PUSHNEW documentation string has been corrected.
3990 (thanks to Vincent Arkesteijn)
3991 * bug fix: defaulting of the value for the last of an atypically
3992 large number of multiple values being bound was not being
3993 performed correctly on the Alpha or PPC platforms
3994 * optimization: implemented multiplication as a modular
3995 (UNSIGNED-BYTE 32) operation on the x86 backend.
3996 * optimization: SEARCH on simple-base-strings can now be open-coded.
3997 (see also contrib/compiler-extras.lisp for inspiration for
3998 teaching the compiler about the Boyer-Moore algorithm).
3999 * value, returned by MAX (and MIN) called with several EQUALP, but
4000 not EQL, arguments now does not depend on compiler settings.
4001 * fixed some bugs revealed by Paul Dietz' test suite:
4002 ** in stack analysis liveness information is propagated from
4003 non-local entry points.
4004 ** pathwise CAST removing failed when the CAST node did not start
4006 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4007 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4009 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4010 host is already defined.
4011 ** RENAME-FILE works on streams instead of signalling an internal
4013 ** PEEK-CHAR uses the current readtable when determining whether
4014 or not a character is whitespace.
4015 ** MERGE-PATHNAMES handles the case when the pathname does not
4016 specify a name while the default-pathname specifies a version.
4017 ** Pathnames now stand a better chance of respecting print/read
4019 ** Attempting to use standardized file system operators with a
4020 pathname with invalid :DIRECTORY components signals a
4022 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4024 ** DIRECTORY on logical pathnames is more correct.
4025 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4026 signal a TYPE-ERROR if their argument is not a stream.
4027 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4028 designator argument does not designate a stream.
4029 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4030 examining the synonym.
4031 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4033 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4034 element-type larger than ([UN]SIGNED-BYTE 32).
4036 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4037 * When built with the :SB-FUTEX feature, threaded builds now take
4038 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4039 for faster/more reliable mutex and condition variable support.
4040 * Incompatible change (but one you probably shouldn't have been using
4041 anyway): the interface and code for arbitrating between multiple
4042 threads in the same user session has been redesigned.
4043 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4044 error when called without an explicit environment argument.
4045 (thanks to Nikodemus Siivola)
4046 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4047 confused about their position. (thanks to Adam Warner and Gerd
4049 * bug fix: Pretty printing backquoted forms with unquotations in the
4050 argument list position of various code constructs such as LAMBDA
4051 now works correctly. (reported by Paul Dietz)
4052 * bug fix: Pretty printing unquotations no longer loses all
4053 stream position information.
4054 * optimization: performance of string output streams is now less
4055 poor for multiple small sequence writes.
4056 * optimization: performance of CSUBTYPEP in the presence of complex
4057 expressions involving CONS and NOT many times has been improved.
4058 (reported by Paul Dietz)
4059 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4061 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4062 streams for the REPL, for the debugger, and so on. (thanks to
4064 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4065 * fixed some bugs revealed by Paul Dietz' test suite:
4066 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4067 is ignored if it is too small, rather than propagating through
4068 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4069 ** extremely complex negations of CONS types were not being
4070 sufficiently canonicalized, leading to inconsistencies in
4072 ** VALUES tranformer lost derived type.
4074 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4075 * fixed a bootstrapping bug: the build process no longer assumes
4076 that the various BOOLE-related constants have the same value in
4077 host and target lisps. (noted by Paul Dietz' test suite on an
4078 SBCL binary built from CLISP)
4079 * The system can now be dynamically linked on the MIPS platform,
4080 which enables dynamic loading of foreign code from Lisp. (thanks
4081 to Ralf Baechle for discussions on the MIPS ABI)
4082 * The system now records debugging information for its own source
4083 files in a filesystem-position-independent manner, relative to
4084 the "SYS" logical host.
4085 * fixed a compiler bug: MV-LET convertion did not check references
4086 to the "max args" entry point. (reported by Brian Downing)
4087 * tweaked disassembly notes to be less confident about proclaiming
4088 some instruction as an LRA. (thanks to Brian Downing)
4089 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4090 now each have their own history, command character, and other
4091 characteristics. (thanks to David Lichteblau)
4092 * fixed some bugs revealed by Paul Dietz' test suite:
4093 ** compiler failure in compiling LOGAND expressions including a
4095 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4096 shift greater than 32.
4097 ** FLUSH-DEST did not mark blocks for type check regeneration.
4098 ** HANDLER-CASE failed to accept declarations in handler clauses
4099 in some circumstances.
4101 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4102 * New code in contrib/sb-introspect (still probably not entirely
4103 stable yet) provides some support for smart Lisp development
4104 environments like SLIME.
4105 * The conditions signalled for errors occurring when loading .fasl
4106 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4107 in a way which should help ASDF recover gracefully.
4108 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4109 stuff has been cleaned up. If you code contrib/ stuff, this might
4110 affect you, and you can look at contrib/README, contrib/STANDARDS,
4111 and/or the 0.8.4.27 diff to check.
4112 * In full calls the compiler now does not generate checks for declared
4113 argument types for all arguments.
4114 * various threading fixes
4115 ** and some experimental patches which didn't make it into
4116 the main tree for this release, but which are shipped in
4117 contrib/experimental-thread.patch as a possible fix for some
4118 failures (deadlock, spinning...) in GC-intensive multithreaded
4120 * fixed PPC build problem (source code incompatibility of different
4121 library versions): added offsetof() hackery which attempts to divine
4122 where glibc maintainers put uc_mcontext today
4123 * fixed bug 282: compiler does not trust type assertions while passing
4124 arguments to a full call.
4125 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4126 &OPTIONAL VALUES type parameter.
4127 * fix bug 214: algorithm for noting rejected templates is now more
4128 similar to that of template seletion. (also reported by rydis on
4130 * fixed bug 141b: printing backquoted information readably and prettily
4131 inserts a space where necessary.
4132 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4133 (CHARACTER 10) are now reported as errors, rather than propagated
4134 as unknown types. (reported by piso on #lisp)
4135 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4136 with values NIL and :ERROR. (thanks to Milan Zamazal)
4137 * fixed bug 191c: CLOS now does proper keyword argument checking as
4138 described in CLHS 7.6.5 and 7.6.5.1.
4139 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4140 longer raise an error; further, using a list as a for-as-arithmetic
4141 counter now raises a meaningful error.
4142 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4143 now understood by sequence creation functions such as MAKE-SEQUENCE
4145 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4146 a STRING-INPUT-STREAM.
4147 * compiler enhancement: SIGNUM is now better able to derive the type
4149 * type declarations inside WITH-SLOTS are checked. (reported by
4151 * fixed some bugs revealed by Paul Dietz' test suite:
4152 ** incorrect optimization of TRUNCATE for a positive first
4153 argument and negative second.
4154 ** compiler failure in let-convertion during flushing dead code.
4155 ** compiler failure while deriving type of TRUNCATE on an
4156 interval, containing 0.
4157 ** ASH of a negative bignum by a negative bignum count now returns
4159 ** intersection of CONS types now canonicalizes properly, fixing
4160 inconsistencies in SUBTYPEP.
4162 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4163 * incompatible change: The --disable-debugger command line
4164 option now clobbers the debugger at a more fundamental
4165 level, by redefining #'INVOKE-DEBUGGER instead of by
4166 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4167 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4168 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4169 enter the debugger REPL and then suffer recursive errors
4170 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4171 while under the new system, BREAK in --disable-debugger mode
4172 terminates the system just as an unhandled error would.
4173 * fixed compiler performance when processing loops with a step >1;
4174 * bug fix: DOCUMENTATION now retrieves generic function
4175 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4176 support has been systematized, and now supports the methods
4177 specified by ANSI, along with a default method and a method for
4178 slot documentation. (reported by Nathan Froyd)
4179 * bug fix: effective methods associated with a generic function are
4180 no longer cached over a change of that generic function's method
4181 combination. (reported by Andreas Fuchs)
4182 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4183 names a non-existent directory. (thanks to Andreas Fuchs)
4184 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4185 the PPC platform, lead to stack corruption; this has been fixed.
4186 (reported by Rainer Joswig)
4187 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4188 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4189 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4190 arithmetic in general, is now much more reliable on the PPC
4192 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4193 platform now returns the right answer.
4194 * optimization: restored some effective method precomputation in
4195 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4196 precomputation is now tunable.
4197 * optimization: compiler-internal data structure use has been
4198 reviewed, and changes have been made that should improve the
4199 performance of the compiler by about 20%.
4200 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4201 simple-base-strings and simple-bit-vectors is improved.
4202 * optimization: the optimization of 32-bit logical and arithmetic
4203 functions introduced in version 0.8.3 on the x86 has been
4204 implemented on the mips, ppc and sparc platforms; an
4205 implementation of the same facility, but for 64-bit arithmetic,
4206 has been added for the alpha.
4207 * microoptimization: the compiler is better able to make use of the
4208 x86 LEA instruction for multiplication by constants.
4209 * bug fix: in some situations compiler did not report usage of
4210 generic arithmetic in (SPEED 3) policy.
4211 * bug 145b fix: compiler used wrong type specifier while converting
4212 MEMBER-types to numeric.
4213 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4215 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4216 index argument now works properly on the Alpha platform.
4217 * bug fix: floating point exception treatment on the Alpha platform
4219 * bug fix: FILE-POSITION works much better on string input and
4220 output streams. (thanks to Nikodemus Siivola)
4221 * bug fix: many threading/garbage collection symptoms sorted.
4222 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4223 might be pseudo-atomic.
4224 * internal change: Stopping for GC is now done with signals not
4225 ptrace. GC is now done in whichever thread wanted it, instead of
4227 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4229 * bug fix: result form in DO is not contained in the implicit
4231 * incompatible change: ICR structure is changed; the value part of
4232 CONTINUATION is now called LVAR; corresponding functions are
4233 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4234 * added type deriver for ISQRT (thanks to Robert E. Brown).
4235 * bug fix: better support for loading from the command line when an
4236 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4238 * fixed some bugs revealed by Paul Dietz' test suite:
4239 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4240 ** ROUND and FROUND now give the right answer when given very
4241 small float arguments.
4242 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4244 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4245 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4246 ** LCM should return a non-negative integer.
4247 ** PARSE-INTEGER returned the index of a terminator instead of the
4248 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4249 ** PARSE-INTEGER returned an incorrect index being applied to a
4251 ** LCM with two arguments of 0 returns 0 rather than signalling
4253 ** unsigned addition of a 32-bit constant with the high bit set no
4254 longer causes an internal compiler error on the x86.
4255 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4256 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4257 with negative last argument.
4258 ** byte specifiers with zero size and position no longer cause
4259 an error during type derivation.
4260 ** bignum multiplication on the Alpha platform now returns the
4262 * porting: The system now builds on SuSE AMD64, although it still
4263 generates a 32-bit binary.
4264 * .fasl file incompatibility: The fasl file version number has
4265 been incremented (because of the changes to internal compiler
4266 data structures referred to above).
4268 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4269 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4270 more accurately, on the Darwin kernel running on PowerPC hardware.
4271 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4272 * Compiler code deletion notes now signal a condition of type
4273 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4274 an associated MUFFLE-WARNING restart.
4275 * The compiler now performs limited argument count validation of
4276 constant format strings in FORMAT, and where appropriate in ERROR,
4277 CERROR and WARN. (thanks to Gerd Moellmann)
4278 * New ASDF-INSTALL contrib can be used for automatic download and
4279 installation of third-party Lisp code from CCLAN or other sites
4281 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4282 which forces another thread to execute a function supplied by the
4284 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4285 now accept and act upon their :ELEMENT-TYPE keyword argument.
4286 (reported by Martin Atzmueller, Edi Weitz)
4287 * bug fix: FILE-POSITION now accepts position designators up to
4288 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4289 is the greater. (thanks to Patrik Nordebo)
4290 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4291 Kalle Olavi Niemitalo)
4292 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4293 printable. (reported by Eric Marsden)
4294 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4295 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4296 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4297 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4298 (thanks to Stig Sandoe)
4299 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4300 UNREAD-CHAR now correctly includes the unread character in the
4301 target sequence. (thanks to Gerd Moellmann)
4302 * bug fix in threaded builds: the system can now be suspended and
4303 resumed by shell job control with minimal disruption.
4304 * bug fixes in times and timezones >2038AD
4305 * better handling of "where is GNU make?" problem in build scripts
4306 (thanks to Nikodemus Siivola)
4307 * new optimization: inside a named function any reference to a
4308 function with the same name is considered to be a self-reference;
4309 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4310 optimization quality.
4311 * new optimization on x86: logical functions and + now have
4312 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4313 used when the result is truncated to 32 bits.
4314 * VALUES declaration is partially enabled.
4315 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4316 * fixed some bugs revealed by Paul Dietz' test suite:
4317 ** The system now obeys the constraint imposed by
4318 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4319 types form a lattice under type intersection.
4320 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4321 ** ASSOC now ignores NIL elements in an alist.
4322 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4323 and (1+ MOST-POSITIVE-FIXNUM) answers.
4324 ** The addition of a method with invalid qualifiers to a generic
4325 function does not cause an error to be signalled immediately;
4326 a warning is signalled, and the error is generated only on
4327 calling the generic function.
4328 * changed .fasl file version number, in part to add type codes for
4329 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4330 obscure ANSI requirements
4332 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4333 * fixed bug 148: failure to inline-expand a local function left
4334 garbage, confusing the compiler.
4335 * fixed bugs 3cd: structure slot readers perform type check if the
4336 slot can have an invalid value (i.e. it is either not initialized
4337 or can be written with a less specific slot writer).
4338 * bug fix: the compiler now traps array references to elements off
4339 the end of an array; previously, the bounds checking in some
4340 circumstances could go off-by-one.
4341 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4343 * type declarations for array element types now obey the description
4344 on the CLHS page "Declaration TYPE", as per discussions on
4345 sbcl-help around 2003-05-08. This means that a declaration
4346 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4347 declaration, all references to BAR will be asserted or assumed
4348 (with THE, so dependent on compiler policy) to involve objects of
4349 type FOO. Note that no such declaration is implied in
4350 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4351 * declared types of functions from the "Conditions"
4352 chapter. (reported by Paul Dietz)
4353 * bug fix: CERROR accepts a function as its first argument.
4354 * bug fix: NTH an NTHCDR accept a bignum as index
4355 arguments. (reported by Adam Warner)
4356 * optimization: character compare routines now optimize comparing
4357 against a constant character. (reported by Gilbert Baumann)
4358 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4359 argument now works properly on the MIPS platform.
4360 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4361 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4362 declared to have a functional type, does not cause an error
4364 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4365 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4366 * fixed bug: if last continuation of a deleted block has a
4367 destination, this destination should be deleted too. (reported by
4369 * fixed a bug in the bootstrap process: the host compiler's values
4370 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4371 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4372 test case from Patrik Nordebo)
4373 * improved the ability of the disassembler on the PPC platform to
4374 provide helpful disassembly notes.
4375 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4376 the class in more cases than previously.
4377 * bug fix: FILE-POSITION now understands :START and :END for
4378 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4379 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4380 8) data. (thanks to David Lichteblau)
4381 * bug fix: it is possible to add a method to a generic function
4382 without lambda list.
4383 * bug fix: reader failed to signal END-OF-FILE inside an
4384 object representation. (reported by Nikodemus Siivola)
4385 * fixed some bugs revealed by Paul Dietz' test suite:
4386 ** LAST and [N]BUTLAST should accept a bignum.
4387 ** condition slot accessors are methods.
4388 ** (VECTOR NIL) is a subtype of STRING.
4390 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4391 * minor incompatible change: some nonsensical specialized lambda
4392 lists (used in DEFMETHOD) which were previously ignored now signal
4394 * minor incompatible change: the system is now aware of the types of
4395 variables in the COMMON-LISP package, and will signal errors for
4396 most violations of these type constraints (where previously they
4397 were silently accepted).
4398 * minor incompatible change: COMPILE-FILE now uses the freedom
4399 afforded (ANSI 3.2.2.3) to use derived function types for
4400 functions defined in the same file. This also permits the system
4401 to warn on static type mismatches and function
4402 redefinition. (Currently it does not work with high DEBUG level.)
4403 * minor incompatible change: VALUES declaration is disabled.
4404 * When issuing notes, the compiler now signals a condition of type
4405 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4406 restart for use in user handlers. It is expected that the
4407 COMPILER-NOTE condition will eventually become a condition
4408 supertype to a hierarchy of note types, which will then be
4409 handleable in a similar fashion. However, at the moment, no such
4410 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4411 but it's an implementation detail, not a classification for the
4413 * Changes in type checking closed the following bugs:
4414 ** type checking of unused values (192b, 194d, 203);
4415 ** template selection based on unsafe type assertions (192c, 236);
4416 ** type checking in branches (194bc).
4417 * A short form of VALUES type specifier has ANSI meaning (it has
4418 increased the number of situations when SBCL cannot perform type
4420 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4421 keywords or constants is permissible.
4422 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4423 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4424 classes. (thanks to Antonio Martinez)
4425 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4426 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4427 argument to a pretty-print stream. Instead, it leaves any such
4428 operations to DESCRIBE-OBJECT methods.
4429 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4431 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4432 lambda lists. (thanks to David Lichteblau)
4433 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4434 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4435 (thanks to Gerd Moellmann)
4436 * fixed bug 246: increased compilation speed of long
4437 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4439 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4441 * DEFCONSTANT now throws a condition of type
4442 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4443 constant to a non-EQL value; CONTINUE and ABORT restarts
4444 respectively change and preserve the value.
4445 * fixed bug 63: The code walker, part of the implementation of CLOS,
4446 is now better at handling symbol macros.
4447 * bug fix: There is no longer an internal implementation type named
4448 CL:LENGTH. (reported by Raymond Toy)
4449 * bug fix: In macro-like defining macros/special operators the
4450 implicit block does not enclose the lambda list.
4451 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4452 enclosed in parentheses) are not suitable as type specifiers, and
4453 their use properly signals an error now.
4454 * bug fix: An argument count mismatch for a type specifier in code
4455 being compiled no longer causes an unhandled error at compile
4456 time, but signals a compile-time warning.
4457 * fixed simple vector readable printing
4458 * bug fix: DESCRIBE takes more care over whether the class
4459 precedence list slot of a class is bound before accessing it.
4460 (reported by Markus Krummenacker)
4461 * bug fix: FORMATTER can successfully compile pretty-printer format
4462 strings which use variants of the ~* directive inside.
4463 * bug fix: SEARCH now applies its TEST predicate to the elements of
4464 the arguments in the correct order. (thanks to Wolfhard Buss)
4465 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4466 in type inference. (thanks to Robert E. Brown)
4467 * bug fix: Reading in symbols with an explicit package name of ""
4468 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4469 * fixed some bugs revealed by Paul Dietz' test suite:
4470 ** NIL is now allowed as a structure slot name.
4471 ** Arbitrary numbers, not just REALs, are allowed in certain
4472 circumstances in LOOP for-as-arithmetic clauses.
4473 ** Multiple class redefinitions before slot access no longer
4474 causes a type error.
4475 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4476 association between the name and a class.
4477 ** Generic functions with non-standard method-combination and over
4478 five methods all of which return constants no longer return NIL
4479 after the first few invocations. (thanks to Gerd Moellmann)
4480 ** CALL-NEXT-METHOD with no arguments now passes the original
4481 values of the arguments, even in the presence of assignment.
4482 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4484 ** DISASSEMBLE works with closures and funcallable instances.
4485 ** ADD-METHOD now returns the generic function, not the new method.
4486 ** FIND-METHOD signals an error if the lengths of the specializers
4487 is incompatible with the generic function, even if the ERRORP
4489 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4490 which its argument is a member.
4491 ** DEFCLASS only redefines the class named by its class-name
4492 argument if that name is the proper name of the class;
4493 otherwise, it creates a new class.
4494 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4495 of the UNBOUND-SLOT condition to the name of the slot.
4496 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4497 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4498 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4499 SLOT-MAKUNBOUND in the specified fashion.
4501 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4502 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4503 cross-compilation host. As a consequence, we can now bootstrap our
4504 way up to SBCL starting with a bare gcc toolchain and human-readable
4505 source code (first the source to CLISP, then the source to SBCL).
4506 * A contributed module containing a partial implementation of the
4507 simple-streams interface has been included. (thanks to Rudi
4509 * A contributed module implementing the RFC1321 Message Digest
4510 Algorithm, known as MD5, has been included.
4511 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4512 no longer has any effect, as the code controlled by this feature
4513 has been deleted. (As far as we know, no-one has ever built using
4514 this feature, and its semantics were confused in any case).
4515 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4516 work on conditions (as required by the ANSI specification),
4517 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4518 expected behaviour on conditions. Users should note, however,
4519 that such behaviour is not required by the ANSI specification,
4520 and so use of this behaviour may render their code unportable.
4521 * fixed some bugs revealed by Paul Dietz' test suite:
4522 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4524 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4525 ** SXHASH on condition objects no longer returns NIL.
4526 ** :ALLOCATION :CLASS slots are better treated; their values are
4527 updated on class redefinition, and initforms inherited from
4528 superclasses are applied.
4529 ** REMOVE-METHOD returns its generic function argument even when
4530 no method was removed.
4531 ** SHARED-INITIALIZE now initializes the values of the requested
4532 slots, including those with :ALLOCATION :CLASS.
4533 ** ALLOCATE-INSTANCE now works on structure classes defined via
4534 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4536 ** SLOT-EXISTS-P now works on conditions, as well as structures
4538 ** MAKE-LOAD-FORM now has the required methods on
4539 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4540 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4541 keyword, and now implements the SLOT-NAMES argument.
4542 ** methods with &OPTIONAL arguments no longer allow too many
4543 arguments to be passed in the call without error.
4544 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4545 option is consistent with the required arguments of the generic
4546 function lambda list.
4547 * bug fix: REQUIRE accepts a string designator. (Thanks to
4549 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4550 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4551 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4552 * bug fix: The compiler now checks for duplicated variables in macro
4554 * bug fix: SETQ on globals returns the correct value.
4555 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4556 not a COMPILER-ERROR (followed by some other strange error on
4557 choosing the CONTINUE restart).
4558 * bug fix: make.sh and friends are now more consistent in the way that
4559 they look for GNU "make".
4561 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4562 * experimental native threads support (on x86 Linux >=2.4 only).
4563 This is not compiled in by default: you need to add :SB-THREAD to
4564 the target features. See the "Beyond ANSI" chapter of the manual
4566 * fix for longstanding nonANSIism: The old distinction between
4567 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4568 The return value from CL:FIND-CLASS is now a CLOS class, and
4569 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4570 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4571 * An interface to the MetaObject Protocol, as described in Kiczales,
4572 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4573 MIT Press, 1991, is available from the SB-MOP package.
4574 * incompatible change: the SB-PCL package should now be considered
4575 a private implementation detail, and no longer a semi-private MOP
4577 * minor incompatible change: due to rearrangement for threads, the
4578 control stack and binding stack are now allocated at arbitrary
4579 addresses instead of being hardcoded per-port. Users affected by
4580 this probably have to be doing advanced things with shared
4581 libraries, and will know who they are.
4582 * minor incompatible change: Previously, all --eval forms used were
4583 processed with READ before any of them were processed with EVAL.
4584 Now each --eval form is processed with both READ and EVAL before
4585 the next --eval form is processed. (Thus package operations like
4586 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4587 work as the user might reasonably expect.)
4588 * minor incompatible change: *STANDARD-INPUT* is now only an
4589 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4591 * minor incompatible change: Y-OR-N-P is now character-oriented,
4592 not line oriented. Also, YES-OR-NO-P now works without errors.
4593 (thanks to Antonio Martinez)
4594 * sb-aclrepl module improvements: an integrated inspector, added
4595 repl features, and a bug fix to :trace command.
4596 * Known functions, which cannot be open coded by the backend, are
4597 considered to be able to check types of their arguments. (fixing
4598 a bug report by Nathan J. Froyd)
4599 * fixed a bug in computing method discriminating functions: It is
4600 now possible to define methods specialized on classes which have
4601 forward-referenced superclasses. (thanks to Gerd Moellmann)
4602 * fixed evaluation order in optional entries (reported by Gilbert
4604 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4605 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4606 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4607 required-by-AMOP NAME argument, as well as CLASS and
4608 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4609 * fixed bug 20: DEFMETHOD can define methods using names that are
4610 not the proper names of classes to designate class specializers.
4611 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4612 Unix file descriptors, instead of blowing up. (thanks to Antonio
4614 * Garbage collection refactoring: user-visible change is that a
4615 call to the GC function during WITHOUT-GCING will not do garbage
4616 collection until the end of the WITHOUT-GCING. If you were doing
4617 this you were probably losing anyway.
4618 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4619 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4620 TYPEP the latter but not the former.
4621 * The compiler issues a full WARNING for calls to undefined functions
4622 with names from the CL package.
4623 * MAP-INTO for a vector destination is open coded. (reported by
4624 Brian Downing on c.l.l)
4625 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4626 documentation string.
4627 * fixed some bugs revealed by Paul Dietz' test suite:
4628 ** COPY-ALIST now signals an error if its argument is a dotted
4630 ** Condition slots are now accessed more correctly in the presence
4631 of multiple initargs for a given slot.
4632 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4633 exclude restarts of the same name associated with a different
4635 ** DEFCLASS of forward-referenced classes with another
4636 forward-referenced class in the superclasses list no longer
4638 ** Condition slots are now initialized once each, not multiple
4639 times. (thanks to Gerd Moellmann)
4640 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4642 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4643 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4644 arguments contain duplicated elements.
4645 ** RESTART-CASE understands local macros.
4646 ** RESTART-CASE associates exactly its own restarts with a condition.
4647 ** ENDP in safe mode checks its argument to be of type LIST.
4648 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4649 in question is unbound.
4650 ** Optimized MAKE-INSTANCE functions no longer cause internal
4651 assertion failures in the presence of duplicate initargs.
4652 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4653 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4654 propagated even in the ctor optimized implementation of
4656 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4658 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4659 * a better implementation of SXHASH on (simple) bit vectors,
4660 measured both in execution speed and in distribution of results
4661 over the positive fixnums, has been installed. Likewise, a better
4662 implementation of EQUAL for simple bit vectors is now available.
4663 * fixed CEILING optimization for a divisor of form 2^k.
4664 * fixed bug 240 (emitting extra style warnings "using the lexical
4665 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4666 by Antonio Martinez)
4667 * fixed SXHASH, giving different results for NIL depending on type
4668 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4669 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4670 variable. (found by Rolf Wester)
4671 * SBCL does not ignore type declarations for special
4672 variables. (reported by rif on c.l.l 2003-03-05)
4673 * some bug fixes in contrib/sb-aclrepl/
4674 * fixed some bugs revealed by Paul Dietz' test suite:
4675 ** a bug in the CONS type specifier, whereby the CAR and CDR
4676 types got intertwined, has been fixed;
4677 ** the type system is now able to reason about the interaction
4678 between INTEGER and RATIO types more completely;
4679 ** APPEND, [N]REVERSE and NRECONC check that those their
4680 arguments, which must be proper lists, are really so;
4681 ** An array specialized to be unable to hold elements has been
4682 implemented, as required -- yes, really -- by ANSI;
4683 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4684 on malformed property lists;
4686 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4687 * incompatible packaging change: in line with Unix convention,
4688 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4689 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4690 * REQUIRE and PROVIDE are now optionally capable of doing something
4691 useful. See the documentation string for REQUIRE.
4692 * infrastructure for a managed SBCL contrib system: contributed
4693 modules in this release include:
4694 ** the ASDF system definition facility;
4695 ** an interface to the BSD Sockets API;
4696 ** an ACL-like convenience interface to the repl;
4697 (thanks to Kevin Rosenberg)
4698 ** an implementation of ROTATE-BYTE, with efficient implementation
4700 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4701 gives a closer approximation to the right answer than previously.
4702 (thanks to Raymond Toy)
4703 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4704 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4705 optional environment arguments, as required by ANSI.
4706 * fixed bugs in other functions taking environment objects, allowing
4707 calls with an explicit NIL environment argument to be compiled
4709 * fixed bug 228: primary return values from
4710 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4711 COMPILE or FUNCTION.
4712 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4713 :TYPE will no longer signal errors on innocuous objects.
4714 * fixed bug 231b: SETQ is better at respecting type declarations in
4715 the lexical environment.
4716 * fixed a bug in DEFCLASS: classes named by symbols with no or
4717 unprintable packages can now be defined.
4718 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4719 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4720 * fixed compiler failure related to checking types of functions.
4721 (reported by Robert E. Brown)
4722 * the compiler is now much more consistent in its error-checking
4723 treatment of bounding index arguments to sequence functions: in
4724 (SAFETY 3) code, errors will be signalled in almost all cases if
4725 invalid sequence bounding indices are passed to functions defined
4726 by ANSI to operate on sequences.
4727 * fixed a bug in the build procedure: documentation of SBCL-specific
4728 packages is now preserved and available in the final Lisp image.
4729 * lifted FDEFINITION lookup out of loops in the implementation of
4730 many list operations. (thanks to Robert E. Brown)
4731 * fixed a bug in the reader: the #n# reader macro now works for
4732 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4733 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4734 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4735 E. Brown and Tony Martinez respectively)
4736 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4737 SLOT-BOUNDP: in particular, it is now able to optimize them much
4738 better, and is now not vulnerable to having packages renamed.
4739 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4740 always called when a slot is not present in an instance. (thanks
4742 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4743 longer signal an error on unreading a character following EOF on
4744 the previous constituent stream. (thanks to Tony Martinez)
4745 * fixed some bugs revealed by Paul Dietz' test suite:
4746 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4747 not just nonnegative fixnums;
4748 ** the logical bit-array operators such as BIT-AND now accept an
4749 explicit NIL for their "opt-arg" argument (to indicate a
4750 freshly-consed result bit-array);
4751 ** ELT now signals an error on an invalid sequence index in safe
4753 ** the type system is now cleverer about negations of numeric
4754 types, and consequently understands the BIGNUM and RATIO types
4756 ** the type system is now cleverer about the interaction between
4757 INTEGER and RATIO types: while bugs still remain, many more
4758 cases are accurately computed;
4759 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4760 if it is in the last clause;
4761 ** CONSTANTLY now correctly returns a side-effect-free function in
4763 ** DECLARE is no longer treated as a special-operator; in
4764 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4765 * incremented fasl file version number due to the change in the
4766 DEFSTRUCT-SLOT-DESCRIPTION structure.
4768 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4769 * minor incompatible change: code processed by the "interpreter" or
4770 EVAL now has a compilation optimization policy of (DEBUG 2)
4771 (changed from (DEBUG 1)) to improve debuggability of interactive
4772 development, and to allow the use of the debug RETURN command in
4774 * an experimental implementation of the RETURN command for the
4775 debugger has been included. (thanks to Frederik Kuivinen)
4776 * fixed bug 62: constraints were not propagated into a loop.
4777 * fixed bug in embedded calls of SORT (reported and investigated by
4779 * fixed some bugs revealed by Paul Dietz' test suite:
4780 ** printing and reading of arrays with some dimensions having
4781 length 0 (thanks to Gerd Moellmann);
4782 ** BOA constructor with &AUX argument without a default value does
4783 not cause a type error;
4784 ** CONSTANTP now returns true for all self-evaluating objects.
4786 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4787 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4788 accessors that are related by inheritance, as specified in the
4789 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4790 Valtteri Vuorikoski)
4791 * The compiler is now able to inline functions that were defined in
4792 a complex lexical environment (e.g. inside a MACROLET).
4793 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4795 * Support for the upcoming FreeBSD-5.0 release has been included.
4796 (thanks to Dag-Erling Smorgrav)
4797 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4798 effect when it is not in a toplevel context.
4799 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4800 stand a better chance of being correct. (thanks to Gerd
4802 * fixed bug in COERCE, which now signals an error on coercing a
4803 rational to a bounded real type which excludes the expected
4805 * The compiler is now able to derive types more accurately from the
4806 COERCE and COMPILE functions.
4807 * fixed bug 223: functional binding is considered to be constant
4808 only for symbols in the CL package.
4809 * fixed bug 231: SETQ did not check the type of a variable being set
4810 (reported by Robert E. Brown)
4811 * A new optimization for MAKE-INSTANCE has been included, fixing
4812 various bugs (including relating to :ALLOCATION :CLASS slots and
4813 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4815 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4816 ** As required by ANSI, LOOP now disallows anonymous collection
4817 clauses such as COLLECT I in conjunction with aggregate boolean
4818 clauses such as THEREIS (= I 1);
4819 ** LOOP now signals an error when any variable is reused in the
4820 same loop (including the potentially useful construct analogous
4821 to WITH A = 1 WITH A = (1+ A);
4822 ** IT is only a special loop symbol within the first clause of a
4823 conditional loop clause;
4824 ** LOOP with a typed iteration variable over a hashtable now
4825 signals a type error iff it should.
4826 * fixed some other bugs revealed by Paul Dietz' test suite:
4827 ** FILE-STREAM now names the class previously known as FD-STREAM;
4828 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4829 argument) no longer signals an error;
4830 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4831 of the slot symbol, rather than using the current package
4832 ((:CONC-NAME "") continues to intern the slot's name in the
4834 * incremented fasl file version number, because of the incompatible
4835 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4836 of the new implementation of DEFINE-COMPILER-MACRO.
4838 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4839 * Support for building SBCL for MIPS platforms running in
4840 little-endian mode has now been checked in, and basic
4841 functionality on said platforms verified.
4842 * minor incompatible change: PCL now records the pathname of a file
4843 in which methods and the like are defined, rather than its
4845 * minor incompatible change: TRUENAME now considers the truename of
4846 a file naming a directory to be the pathname with :DIRECTORY
4847 component indicating that directory.
4848 * minor incompatible change: a NAMED clause in the extended form of
4849 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4850 reason for the previous behaviour is unclear.
4851 * more systematization and improvement of CLOS and MOP conformance
4852 in PCL (thanks to Gerd Moellman and Pierre Mai):
4853 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4855 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4856 primary methods with no specializers;
4857 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4859 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4860 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4861 FORWARD-REFERENCED-CLASSes; error reporting on
4862 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4864 ** SXHASH on CLOS instances now uses a slot internal to the
4865 instance to return different numbers on distinct instances,
4866 while preserving the same return value through invocations of
4868 ** DEFMETHOD signals errors when methods with longer incongruent
4869 lambda lists are added to generic functions;
4870 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4871 CLASS, as specified in AMOP;
4872 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4873 on the order returned by the primary method for classes of
4874 class STANDARD-CLASS;
4875 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4876 * fixed some bugs shown by Paul Dietz' test suite:
4877 ** DOLIST puts its body in TAGBODY;
4878 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4880 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4881 value producing form;
4882 ** if more variables are given to PROGV than values, extra
4883 variables are bound and made to have no value;
4884 ** NSUBSTITUTE on list arguments gets the right answer with
4886 ** ELT signals an error of type TYPE-ERROR when the index argument
4887 is not a valid sequence index;
4888 ** LOOP signals (at macroexpansion time) an error of type
4889 PROGRAM-ERROR when duplicate variable names are found;
4890 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4891 ** FUNCALL of special-operators now cause an error of type
4893 ** PSETQ now works as required in the presence of side-effecting
4894 symbol-macro places;
4895 ** NCONC accepts any object as its last argument;
4896 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4898 ** loop-for-as-package does not require a package to be explicitely
4900 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4902 * fixed bug 166: compiler preserves "there is a way to go"
4903 invariant when deleting code.
4904 * fixed bug 172: macro lambda lists with required arguments after
4905 &REST arguments now cause an error to be signalled. (thanks to
4907 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4908 bug. (thanks to Matthew Danish)
4909 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4911 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4912 arguments are lexically rebound. (thanks to Gerd Moellmann and
4914 * fixed bug 194: error messages are now more informative when there
4915 is no primary method applicable in a call to a generic
4916 function. (thanks to Gerd Moellmann)
4917 * fixed bug in command line argument checking (thanks to Julian
4919 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4920 (thanks to Matthew Danish)
4921 * incremented fasl file version number, because of the
4922 SXHASH-related changes in the layout of CLOS data structures
4924 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4925 * minor incompatible change: The runtime (the Unix executable named
4926 "sbcl") is now much pickier about the .core files it will load.
4927 Essentially it now requires .core files to descend from the same
4928 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4929 as the runtime does. (The intent is to prevent the crashes which
4930 can occur, and which can even be reported as mysterious failures,
4931 when people patch the sources or change the build parameters
4932 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4933 sbcl and .core files.)
4934 * fixed bug: VALUES-LIST is no longer optimized away.
4935 * fixed bug 142: The FFI conversion of C string values to Lisp
4936 string values no longer conses excessively. (thanks to Nathan
4937 Froyd porting Raymond Toy's fix to CMU CL)
4938 * began to systematize and improve MOP conformance in PCL (thanks to
4939 Nathan Froyd, Gerd Moellman and Pierre Mai):
4940 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4942 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4943 ** FINALIZE-INHERITANCE is now called on class finalization;
4944 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4945 argument precedence order.
4946 * fixed bug 202: The compiler no longer fails on functions whose
4947 derived types contradict their declared type.
4948 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4949 so it can be non-toplevel.
4950 * The fasl file version number has changed (because of the new
4951 implementation of DEFMACRO).
4952 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4953 safe code, that any length requirement by their type-specifier
4954 argument is valid. The exceptions to this are described in bug
4956 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4957 functions now check the types of their inputs as required by ANSI.
4958 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4959 introduced symbol is DECLAREd to be SPECIAL.
4960 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4961 * fixed bug: :COUNT argument to sequence functions may be negative
4962 * fixed bug: body of DO-SYMBOLS may contain declarations
4963 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4964 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4965 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4966 symbol macro only once
4967 * fixed printing of call frame when argument list is unavailable
4968 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4969 * compiler no longer signals WARNING on unknown keyword
4972 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4973 * A beta-quality port to the mips architecture running Linux,
4974 based on the old CMUCL backend, has been made. It has been tested
4975 on a big-endian kernel, and works sufficiently well to be able to
4976 rebuild itself; it has not been tested in little-endian mode.
4977 * fixed an inconsistency between gencgc.c and purify.c which made
4978 dumping/loading .core files unreliable
4979 * fixed bug 120a: The compiler now deals correctly with IFs where
4980 the consequent is the same as the alternative, instead of
4981 misderiving the return type. (thanks to Alexey Dejneka)
4982 * fixed bug 113: Logical pathnames are now dumpable (the logical
4983 host is resolved at load-time, throwing an error if it is not
4985 * fixed bug 174: FORMAT's error message is slightly clearer when a
4986 non-printing character is used in a format directive.
4987 * fixed several bugs in compiler checking of type declarations, i.e.
4988 violations of the Python "declarations are assertions" principle
4989 (thanks to Alexey Dejneka)
4990 * fixed several bugs in PCL's error checking (thanks to Gerd
4992 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4994 * fixed bug in compilation of functions as first class values
4995 (thanks to Antonio Martinez-Shotton)
4996 * The compiler's handling TYPE-ERRORs which it can prove will
4997 inevitably happen at runtime has been cleaned up and corrected
4998 in several ways. (thanks to Alexey Dejneka)
4999 * improved argument type checking for various basic arithmetic
5000 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5001 lavished on them in the past that they can be compiled in many
5002 ways in different special cases
5003 * fixed bug 181: compiler checks validity of user supplied type
5005 * cleaned up code flushing in optimization: Function calls which
5006 should signal errors for safety purposes (e.g. which ANSI says
5007 should signal errors when their arguments are of incorrect type)
5008 are no longer optimized away.
5009 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5010 * incremented fasl file version number, because changes in the
5011 implementation of sequence functions like COERCE caused
5012 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5013 in old inline expansions) to become undefined. (Actually these
5014 changes were later undone, so we might very well be binary
5015 compatible with 0.7.7 after all, but leaving the version number
5016 incremented seemed like the simplest and most conservative
5019 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5020 * An alpha-quality port to the parisc architecture running Linux,
5021 based on the old CMUCL backend, has been made. This, even more so
5022 than the other backends, should be considered still a work in
5023 progress; known problems include that the Linux kernel in 64-bit
5024 mode does not propagate the correct sigcontext structure to
5025 userspace, and consequently SBCL on a parisc64 kernel will not
5027 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5028 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5029 suppressed.) Also now that the compiler is looking at declarations
5030 in the environment, it checks optimization declarations as well,
5031 and suppresses inlining when (> DEBUG SPEED).
5032 * More fixes have been made to treatment of floating point exception
5033 treatment and other Unix signals. In particular, floating point
5034 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5035 * The detection and handling of control stack exhaustion (infinite
5036 or very deeply nested recursion) has changed. Stack exhaustion
5037 detection is now done by write-protecting pages at the OS level
5038 and applies at all optimization settings; when found, a
5039 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5040 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5041 be caught using IGNORE-ERRORS.
5042 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5043 correctly when transforming recursive LABELS functions to LETs.
5044 (thanks to Alexey Dejneka)
5045 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5046 that are names of constants or global variables.
5047 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5048 alien routines with docstrings.
5049 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5050 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5052 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5053 (thanks to Eric Marsden)
5054 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5055 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5056 * Bug fix: The SPARC backend can now compile functions involving
5057 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5058 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5059 to a functions expecting a PATHNAME-DESIGNATOR.
5060 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5061 lambda lists. (thanks to Alexey Dejneka)
5062 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5063 functions so that EXPORTing the name of the class doesn't cause
5064 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5065 to Antonio Martinez for reporting this)
5066 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5067 constant-folded without failing an assertion. (thanks to Einar
5068 Floystad Dorum for reporting this)
5069 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5070 types are now dealt with more correctly by the compiler.
5071 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5072 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5073 behaviour analogous to RENAME-FILE. This puts its behaviour more
5074 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5076 * The fasl file version number has changed again. (because of the
5077 bug fix involving the names of PCL MAKE-INSTANCE functions)
5079 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5080 * bug fix: Floating point exceptions are treated much more
5081 consistently on the x86/Linux and PPC/Linux platforms.
5082 * Array initialization with :INITIAL-ELEMENT is now much faster for
5083 cases when the compiler cannot open code the array creation, but
5084 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5085 array accesses have also seen a speed increase.
5086 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5087 specified. (This was at the root of some bad interactions between
5088 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5090 * bug fix: Internal error arguments for undefined functions are now
5091 computed correctly on the PPC/Linux platform.
5092 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5093 Raymond Toy's patch for CMU CL)
5094 * Support for the Solaris 9 operating environment has been included
5095 (thanks to Daniel Merritt)
5096 * A very ugly but hopefully complete draft of the missing FFI chapter
5097 of the manual has been created by reformatting the corresponding
5098 CMU CL manual chapter into (currently very ugly and incoherent)
5099 DocBook and bringing it up to date for SBCL behavior. Thus, the
5100 manual is now essentially complete, at least by my extreme
5101 once-and-only-once standards, whereby it's acceptable to refer to
5102 the doc strings of SB-EXT functions as the primary documentation.
5103 * The fasl file version number has changed again, due to cleanup of
5104 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5105 is no longer a static symbol.)
5107 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5108 * SBCL now builds with OpenMCL (version 0.12) as the
5109 cross-compilation host; also, more progress has been made toward
5110 bootstrapping under CLISP.
5111 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5113 * bug 158 fixed: The compiler can now deal with integer loop
5114 increments different from 1; fixing this turned out also to fix
5116 * bug 169 fixed: no more bogus warnings about using lexical bindings
5117 despite the presence of perfectly good SPECIAL declarations (thanks
5118 to David Lichteblau)
5119 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5120 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5121 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5123 * bug 180 fixed: Method combination specifications no longer ignore
5124 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5125 * bug fix: Structure type predicate functions now check their argument
5126 count as they should.
5127 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5128 correctly. (thanks to Pierre Mai)
5129 * minor incompatible change: The --noprogrammer option is deprecated
5130 in favor of the new --disable-debugger option, which is very similar.
5131 (The major difference is that it takes effect at a slightly different
5132 time at startup, causing handling of errors in --sysinit and
5133 --userinit files will be affected differently.) The
5134 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5135 been added to allow this functionality to be controlled from ordinary
5136 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5137 maintainers, who might want to run non-interactive scripts to
5138 build SBCL cores which will later be used interactively.)
5139 * minor incompatible change: The LOAD function no longer, when given
5140 a wild pathname to load, loads all files matching that pathname.
5141 Instead, an error of type FILE-ERROR is signalled.
5143 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5144 * bug 147 fixed: The compiler preserves its block link/count
5145 invariants more correctly now so that it doesn't crash. (thanks
5147 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5149 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5150 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5151 no-value-for-this-character as NIL (as specified by ANSI).
5152 * HOST-NAMESTRING on physical pathnames now returns a string that is
5153 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5154 (thanks to Christophe Rhodes)
5155 * The Alpha port handles icache flushing more correctly. (thanks to
5157 * More progress has been made toward bootstrapping under CLISP. (thanks
5158 to Christophe Rhodes)
5159 * The fasl file format has changed again, because dynamic loading
5160 on OpenBSD (which has non-ELF object files) motivated some cleanups
5161 in the way that foreign symbols are transformed and passed around.
5162 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5163 is no longer treated as whitespace by the reader, but instead as
5164 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5165 |A
\7fB|, instead of A as it used to.
5167 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5168 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5169 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5170 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5171 this as of 0.7.1.45, but was left out of the previous news section
5172 (thanks to Dan Barlow)
5173 * SBCL now runs on the Solaris operating system on SPARC architectures
5174 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5175 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5176 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5177 * SPARC backend cleanups, allowing builds of cores optimized for V8
5178 and V9 SPARCS, and also emission of code targeted to a particular
5179 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5181 * SBCL is closer to bootstrapping under CLISP, thanks to various
5182 fixes by Christophe Rhodes.
5183 * The fasl file format has changed again, to allow the compiler's
5184 INFO database to support symbol macros.
5185 * The user manual (in doc/) is formatted into HTML more nicely.
5186 (thanks to coreythomas)
5187 * The system is smarter about SUBTYPEP relationships, especially
5188 those involving NOT types (including types such as ATOM which are
5189 represented internally using NOT types). Thus SUBTYPEP is less
5190 likely to return (VALUES NIL NIL) in general, and in particular
5191 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5193 * The fasl file format has changed again, because the internal
5194 representation of types now includes a new slot to support the new
5195 SUBTYPEP-of-NOT-types logic.
5196 * (not a change in the main branch of SBCL, but a related prototype
5197 which can hopefully be merged into the main branch of SBCL in the
5198 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5199 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5200 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5201 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5202 dispatch macro character combinations. (thanks to Alexey Dejneka)
5203 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5204 that superficially look like logical namestrings correctly.
5205 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5207 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5208 default supplied-p) for &optional and &key arguments. (thanks to
5211 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5212 * incompatible change: The compiler is now less aggressive about
5213 tail call optimization, doing it only when (> SPACE DEBUG) or
5214 (> SPEED DEBUG). (This is an incompatible change because there are
5215 programs which relied on the old CMU-CL-style behavior to optimize
5216 away their unbounded recursion which will now die of stack overflow.)
5217 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5218 for non-GENCGC systems has been increased to 20M (since that
5219 seems much closer to the likely performance optimum for modern
5220 systems than the old 4M value was)
5221 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5222 and *DEBUG-PRINT-LEVEL*
5223 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5224 of CMU CL's support for SPARC, and various endianness and other
5225 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5226 * new syntactic sugar for the Unix command line: --load foo.bar is now
5227 an alternate notation for --eval '(load "foo.bar")'.
5229 ** The system now detects stack overflow and handles it gracefully,
5230 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5231 optimization settings. (This is a good thing in general, and
5232 its introduction in this version should be particularly timely
5233 for anyone whose code fails because of suppression of tail
5235 ** The system now hunts for the C variable "environ" in a more
5236 devious way, to avoid segfaults when the C library version differs
5237 between compile time and run time. (thanks to Christophe Rhodes)
5238 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5239 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5240 ** The compiler no longer issues bogus style warnings for undefined
5241 classes in the same source file as the DEFCLASSes which defined
5242 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5244 ** fixes in CONDITION class precedence list for undefined function
5245 errors (thanks to Alexei Dejneka)
5246 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5247 correctly. (thanks to Dan Barlow)
5248 ** portability fixes aiming at bootstrapping under CLISP (thanks
5249 to Dave McDonald and Christophe Rhodes)
5250 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5251 ** fixes in type translation and and type inference (thanks to
5253 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5254 ** various fixes in the new ports (thanks to Dan Barlow)
5255 * several changes related to debugging:
5256 ** suppression of tail recursion, as noted above
5257 ** stack overflow detection, as noted above
5258 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5259 is now the default. (For some time encapsulation has been more
5260 reliable than the breakpoint-based :ENCAPSULATE NIL
5261 implementation, at least on X86 systems; and I just noticed that
5262 encapsulation also seems closer to the spirit of the ANSI
5265 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5267 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5268 up properly again. (There was a packaging bug in 0.7.0 which
5269 left their definitions in SB-SYS::LOAD-FOREIGN and
5270 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5271 vital for most things which interface to C-level interfaces,
5272 like extensions working with sockets or databases or
5273 Perl-compatible regexes or whatever, and the need to fix
5274 this bug is the main reason that 0.7.1 was released so
5276 ** DEFGENERIC is now choosier about the methods it redefines, so that
5277 reLOADing a previously-LOADed file containing DEFGENERICs does
5278 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5279 cycle now works as it should. (thanks to Alexey Dejneka)
5280 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5281 fixed by Christophe Rhodes. (He actually submitted this patch
5282 months ago, and I delayed until after 0.7.0.)
5283 ** Bug 111 (internal compiler confusion about runtime checks on
5284 FUNCTION types) was fixed by Alexey Dejneka.
5285 * Some internal cleanups (getting rid of variables which aren't
5286 needed now that the byte interpreter is gone) caused the fasl
5287 file format number to change again.
5289 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5290 * major incompatible change: The default fasl file extension, i.e. the
5291 default extension for files produced by COMPILE-FILE, has changed
5292 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5294 ** There are many changes in the implementation of the compiler.
5295 SBCL is now essentially a compiler-only implementation of ANSI
5296 Common Lisp. EVAL still "interprets" a few special cases, but
5297 almost all the interesting cases are handled by creating
5298 a LAMBDA expression, calling COMPILE on it, then calling
5299 FUNCALL on the result.
5300 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5301 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5302 Since the code is newer, there might still be some new bugs
5303 (though not as many as before Martin Atzmueller's fixes:-). But
5304 the new code is substantially simpler and clearer, and hopefully
5305 any remaining bugs will be simpler, less fundamental, and more
5306 fixable then the bugs in the old code.
5307 ** The revised compiler is still a little unsteady on its feet.
5309 *** The debugging information it produces (particularly the names
5310 of FUNCTION objects) is sometimes much less useful than what
5311 the old compiler produced.
5312 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5313 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5314 within a MACROLET) has been temporarily weakened.
5315 ** There are new compiler optimizations for various functions:
5316 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5317 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5318 *** the math functions TRUNCATE, FLOOR, and CEILING
5319 *** the function-of-all-trades COERCE
5320 Mostly these should be transparent, but there's one
5321 potentially-annoying problem (bug 117): when the compiler
5322 inline-expands a function and does type analysis on the result,
5323 it can create control paths which have type mismatches, and
5324 when it can't prove that those control paths aren't taken,
5325 it will issue WARNINGs about the type mismatches. This is
5326 a particular problem in practice for the new sequence functions.
5327 It's not clear how this should be fixed, and for now, a
5328 workaround is given in the entry for 117 in the BUGS file.
5329 ** (Because of the interaction between the two previous items --
5330 occasional inlining problems and new inline expansions -- some
5331 of the new sequence function optimizations won't really kick in
5332 completely until debugging information, and then inlining, are
5333 straightened out in some future version.)
5334 * minor incompatible changes:
5335 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5336 DIRECTORY no longer implicitly promotes NIL slots of its
5337 pathname argument to :WILD. In particular, when you ask for the
5338 contents of a directory (which you used to be able to do without
5339 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5340 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5341 ** changes in behavior that ANSI explicitly defines to be
5342 implementation dependent:
5343 *** The new compiler-only implementation still conforms with ANSI,
5344 but acts a little different than before. Besides the obvious
5345 changes in performance tradeoffs (that the cost per form passed
5346 to EVAL has gone up, and the cost per form executed by EVAL
5347 has gone down), the behavior of the system changes a little
5348 because there are no longer any interpreted function objects.
5349 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5350 e.g. doing COMPILE on the output of interactive DEFUN is
5352 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5354 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5355 has changed from (:CL) to NIL.
5356 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5357 e.g. #\Newline and #\Tab, don't have names specified in the
5358 ANSI Common Lisp standard, is now based on their ASCII symbolic
5359 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5360 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5361 are no longer used for output.
5362 ** changes in internal implementation constants:
5363 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5364 4 million. (If your application spends a lot of time GCing and
5365 you have a lot of RAM, you might want to experiment with
5366 increasing it even more.)
5367 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5368 However, almost all old code should still continue to work without
5369 immediate update, as SB-C-CALL is now a (deprecated) nickname
5371 ** Old operator names in the style DEF-FOO are now deprecated in
5372 favor of new corresponding names DEFINE-FOO, for consistency with
5373 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5374 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5375 internal symbols, but a few supported extensions like
5376 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5377 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5378 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5379 etc. as you get deeper into recursive calls to the debugger
5380 command loop, instead of the old "5]", "5]]", "5]]]"
5381 sequence. (I was motivated to do this when squabbles between
5382 ILISP and SBCL left me very deeply nested in the debugger. In the
5383 short term, this change will probably provoke more ILISP/SBCL
5384 squabbles, but hopefully it will be an improvement in the long run.)
5385 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5386 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5387 function, since declaiming return types involving aliens is
5388 (1) annoyingly messy to do by hand and (2) vital to efficient
5389 compilation of code which calls such functions.
5390 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5391 longer reexported by the SB-EXT package. They're solely useful
5392 for alien code, so it seems more logical that you should get
5393 them from the SB-ALIEN package, not in SB-EXT.
5394 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5395 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5396 features. Instead, the code that they used to control is always
5397 built into the system.
5398 * many other bug fixes
5399 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5400 advantage of the new EVAL-WHEN stuff and to clean them up in
5401 general, and they are now more ANSI-compliant in a number of
5402 ways. Martin Atzmueller is responsible for a lot of this.
5403 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5405 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5406 *** correct ERROR type for various file operations
5407 *** some fixes for Lisp streams
5408 *** DEFMETHOD syntax checking
5409 *** changing old weird representation of debug information as
5410 strings (which, among their other deficiencies, don't transform
5411 correctly when you rename packages, and don't change their
5412 print representation when you change things like *PACKAGE*
5413 and *PRINT-LENGTH*) to symbols and lists of symbols
5414 He also made several improvements and fixed several bugs in DESCRIBE.
5415 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5417 *** misbehavior of WRITE-STRING/WRITE-LINE
5418 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5419 and several other LOOP problems as well
5420 *** DIRECTORY when similar filenames are present
5421 *** DEFGENERIC with :METHOD options
5422 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5423 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5424 *** argument ordering in FIND with :TEST option
5425 *** mishandled package designator argument in APROPOS-LIST
5426 *** various problems in the backquote readmacro
5427 *** a bug in APROPOS
5428 *** probably some others that I'm not describing very well here,
5429 since the CVS log documents them by reference to sbcl-devel
5430 messages, and the SourceForge archives aren't working well.:-(
5431 ** Dan Barlow improved the Alpha port (and is making progress on the
5432 PPC port, for those of you who think different).
5433 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5434 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5435 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5436 continues to work on the SPARC port (for those of you in a position
5437 to look down upon our little PC-compatible boxes from a great height).
5438 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5439 and uses that copy, rather than the current dynamic value, when
5440 it's trying to decide whether to truncate output. Thus e.g.
5441 (let ((*print-lines* 50))
5442 (pprint-logical-block (stream nil)
5444 (let ((*print-lines* 8))
5445 (print (aref possiblybigthings i) stream)))))
5446 should now truncate the logical block only at 50 lines, instead of
5447 often truncating it at 8 lines, as it did before.
5448 * The doc/cmucl/ directory, containing old CMU CL documentation
5449 from the time of the fork, is no longer part of the base system.
5450 SourceForge has shut down its anonymous FTP service, and with it
5451 my original plan for distributing the old CMU CL documentation
5452 there. For now, if you need these files you can download an old
5453 SBCL source release and extract them from it.
5454 * The fasl file version number changed again, for dozens of reasons,
5455 some of which are apparent above.
5457 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5458 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5459 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5460 patch, so that DISASSEMBLE output is much nicer.
5461 * The code in the SB-PROFILE package now seems reasonably stable.
5462 I still haven't decided what the final interface should look like
5463 (I'd like PROFILE to interact cleanly with TRACE, since both
5464 facilities use function encapsulation) but if you have a need
5465 for profiling now, you can probably use it successfully with
5466 the current CMU-CL-style interface.
5467 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5468 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5469 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5470 link now returns the dangling link itself, and for similar
5471 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5472 link itself. (In these cases the old code signalled an error and
5473 looped endlessly, respectively.) Thus, DIRECTORY now works even
5474 in the presence of dangling and cyclic symbolic links.
5475 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5476 is now a supported extension again, since the consensus on
5477 sbcl-devel was that it can be useful for ordinary development
5478 work, not just for debugging SBCL itself.
5479 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5480 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5481 that currently-defined functions might be redefined later with
5482 different return types.
5483 * Hash tables can be printed readably, as inspired by CMU CL code
5484 of Eric Marsden and SBCL code of Martin Atzmueller.
5485 * better error handling in CLOS method combination, thanks to
5486 Martin Atzmueller porting Pierre Mai's CMU CL patches
5487 * more overflow fixes for >16Mbyte I/O buffers
5488 * A bug in READ has been fixed, so that now a single Ctrl-D
5489 character suffices to cause end-of-file on character streams.
5490 In particular, now you only need one Ctrl-D at the command
5491 line (not two) to exit SBCL.
5492 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5494 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5495 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5496 does the right thing.
5497 * The implementation of some type tests, especially for CONDITION
5498 types, is now tidier and maybe faster, due to CMU CL code
5499 originally by Douglas Crosher, ported by Martin Atzmueller.
5500 * Some math functions have been fixed, and there are new
5501 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5502 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5503 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5504 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5505 likely to be built into sbcl-0.7.0.)
5506 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5507 CL, ported to SBCL by Martin Atzmueller)
5508 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5509 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5510 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5511 * There's a new slam.sh hack to shorten the edit/compile/debug
5512 cycle for low-level changes to SBCL itself, and a new
5513 :SB-AFTER-XC-CORE target feature to control the generation of
5514 the after-xc.core file needed by slam.sh.
5515 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5516 COMPILE-FILE is no longer supported, so that now every function
5517 gets an entry point, so that block compilation looks a little
5518 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5519 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5520 returns the number of bytes consed since the system started,
5521 rather than the number consed since the first time the function
5522 was called. (The new definition parallels ANSI functions like
5523 CL:GET-INTERNAL-RUN-TIME.)
5524 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5525 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5526 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5527 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5528 * Fasl file version numbers are now independent of the target CPU,
5529 since historically most system changes which required version
5530 number changes have affected all CPUs equally. Similarly,
5531 the byte fasl file version is now equal to the ordinary
5534 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5535 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5536 is no longer recognized. I apologize for this, because it was
5537 listed in SB-EXT as a supported extension, but I found that
5538 its existing behavior was poorly specified, as well as incorrectly
5539 specified, and it looked like too much of a mess to straighten it
5540 out. I have enough on my hands trying to get ANSI stuff to work..
5541 * many patches ported from CMU CL by Martin Atzmueller, with
5542 half a dozen bug fixes in pretty-printing and the debugger, and
5543 half a dozen others elsewhere
5544 * fixed bug 13: Floating point infinities are now supported again.
5545 They might still be a little bit flaky, but thanks to bug reports
5546 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5547 as flaky as they were.
5548 * The --noprogrammer command line option is now supported. (Its
5549 behavior is slightly different in detail from what the old man
5550 page claimed it would do, but it's still appropriate under the
5551 same circumstances that the man page talks about.)
5552 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5553 are now supported, and enabled by default. Thus, the compiler can
5554 handle many floating point and complex operations much less
5555 inefficiently. (Thus e.g. you can implement a complex FFT
5557 * The compiler now detects type mismatches between DECLAIM FTYPE
5558 and DEFUN better, and implements CHECK-TYPE more correctly, and
5559 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5560 thanks to patches from Martin Atzmueller.
5561 * various fixes to make the cross-compiler more portable to
5562 ANSI-conforming-but-different cross-compilation hosts (notably
5563 Lispworks for Windows, following bug reports from Arthur Lemmens)
5564 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5565 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5566 fixed thanks to Pierre Mai's CMU CL patches.
5567 * fixes to keep the system from overflowing internal counters when
5568 it tries to use i/o buffers larger than 16M bytes
5569 * fixed bug 45a: Various internal functions required to support
5570 complex special functions have been merged from CMU CL sources.
5571 (When I was first setting up SBCL, I misunderstood a compile-time
5572 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5573 * improved support for type intersection and union, fixing bug 12
5574 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5575 more obscure bugs as well
5576 * some steps toward byte-compiling non-performance-critical
5577 parts of the system, courtesy of patches from Martin Atzmueller
5578 * Christophe Rhodes has made some debian packages of sbcl at
5579 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5580 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5581 stable, but are nonetheless usable. When he's ready, I'd be happy
5582 to add them to the SourceForge "File Releases" section. (And if
5583 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5584 * new fasl file format version number (because of changes in
5585 internal representation of (OR ..) types to accommodate the new
5586 support for (AND ..) types, among other things)
5588 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5589 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5591 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5593 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5594 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5595 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5596 * DESCRIBE now works on structure objects again.
5597 * Most function call argument type mismatches are now handled as
5598 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5599 know whether the function will be redefined before the call is
5600 executed. (The compiler could flag local calls with full WARNINGs,
5601 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5602 it doesn't keep track of enough information to know whether calls
5603 are local in this sense.)
5604 * Compiler output is now more verbose, with messages truncated
5605 later than before. (There should be some supported way for users
5606 to override the default verbosity, but I haven't decided how to
5607 provide it yet, so this behavior is still controlled by the internal
5608 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5609 src/compiler/ir1util.lisp.)
5610 * Fasl file format version numbers have increased again, because
5611 support for the Gray streams extension changes the layout of the
5612 system's STREAM objects.
5613 * The Gray subclassable streams extension now works, thanks to a
5614 patch from Martin Atzmueller.
5615 * The full LOAD-FOREIGN extension (not just the primitive
5616 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5617 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5618 but like most other programs, it defaults to copying the Unix
5619 environment from the original process instead of starting the
5620 new process in an empty environment.
5621 * Extensions which manipulate the Unix environment now support
5622 an :ENVIRONMENT keyword option which doesn't smash case or
5623 do other bad things. The CMU-CL-style :ENV option is retained
5624 for porting convenience.
5625 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5626 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5628 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5630 * A patch from Martin Atzmueller seems to have solved the SIGINT
5631 problem, and as far as we know, signal-handling now works cleanly.
5632 (If you find any new bugs, please report them!)
5633 * The system no longer defaults Lisp source file names to types
5634 ".l", ".cl", or ".lsp", but only to ".lisp".
5635 * The compiler no longer uses special default file extensions for
5636 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5637 seems to expect a single default extension for all compiled code,
5638 and there's no compelling reason to try to stretch the standard
5639 to allow two different extensions.) Instead, byte-compiled files
5640 default to the same extension as native-compiled files.
5641 * Fasl file format version numbers have increased again, because
5642 a rearrangement of internal implementation packages made some
5643 dumped symbols in old fasl files unreadable in new cores.
5644 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5645 many fewer weird special cases.
5646 * Bug #17 (differing COMPILE-FILE behavior between logical and
5647 physical pathnames) has been fixed, and some related misbehavior too,
5648 thanks to a patch from Martin Atzmueller.
5649 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5650 by Tim Moore, ported to SBCL by Martin Atzmueller.
5651 * Martin Atzmueller fixed several filesystem-related problems,
5652 including bug #36, in part by porting CMU CL patches, which were
5653 written in part by Paul Werkowski.
5654 * More compiler warnings in src/runtime/ are gone, thanks to
5655 more patches from Martin Atzmueller.
5656 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5659 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5661 * DESCRIBE now works on CONDITION objects.
5662 * The debugger now handles errors which arise when trying to print
5663 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5665 * The build system now uses an additional file, customize-target-features.lisp,
5666 to allow local modifications to the target *FEATURES* list. (The point of
5667 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5668 debugging features enabled, without having to worry about propagating it
5669 into everyone's system when I do a "cvs update".) When no
5670 customize-target-features.lisp file exists, the target *FEATURES* list
5671 should be constructed the same way as before.
5672 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5673 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5674 warn about behavior which is undefined under the ANSI spec. Note: This
5675 is specified by ANSI, but it's not very popular with programmers.
5676 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5677 macro in the SBCL sources for an example of a workaround which you
5678 might use to make portable ANSI-standard code which does what you want.
5679 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5680 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5681 when it's used as a non-toplevel form. (This is required in order
5682 to implement the DEFCONSTANT-EQX macro.)
5683 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5684 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5685 funny things, due to bugs in the implementation of EVAL-WHEN
5686 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5687 non-toplevel DEFCONSTANTs are uncommon.)
5688 * The core file version number and fasl file version number have been
5689 incremented, because the old noncompliant DEFCONSTANT behavior involved
5690 calling functions which no longer exist, and because I also took the
5691 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5692 * fixed bug 1 (error handling before read-eval-print loop starts), and
5693 redid debugger restarts and related debugger commands somewhat while
5695 ** The QUIT debugger command is gone, since it did something
5696 rather different than the SB-EXT:QUIT command, and since it never
5697 worked properly outside the main toplevel read/eval/print loop.
5698 Invoking the new TOPLEVEL restart provides the same functionality.
5699 ** The GO debugger command is also gone, since you can just invoke
5700 the CONTINUE restart directly instead.
5701 ** The TOP debugger command is also gone, since it's redundant with the
5702 FRAME 0 command, and since it interfered with abbreviations for the
5704 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5706 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5707 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5708 some porting work by Martin Atzmueller)
5709 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5710 with a boatload of patches which he ported to SBCL. Now that those
5712 ** The system tries to make sure that its low-priority messages
5713 are prefixed by semicolons, to help people who like to use
5714 syntax highlighting in their ILISP buffer. (This patch
5715 was originally due to Raymond Toy.)
5716 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5717 patches originally written by Raymond Toy.
5718 ** The compiler understands coercion between single-value and
5719 multiple-VALUES type expressions better, getting rid of some very
5720 weird behavior, thanks to patches originally by Robert MacLachlan
5721 and Douglas Crosher.
5722 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5723 lambda lists, thanks to a patch originally by Pierre Mai.
5724 ** The system no longer bogusly warns about "abbreviated type
5726 ** The compiler gets less confused by inlining and RETURN-FROM,
5727 thanks to some patches originally by Tim Moore.
5728 ** The system no longer hangs when dumping circular lists to fasl
5729 files, thanks to a patch originally from Douglas Crosher.
5730 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5731 undefined function error.
5732 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5733 in structure slot initforms) for now, documented workaround instead:-|
5734 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5735 * fixed bug 5: added stubs for various Gray stream functions called
5736 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5737 installed, at least appropriate type errors are generated
5738 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5739 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5740 consistently in DEFMETHOD forms.
5741 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5742 it doesn't seem to affect SBCL after all
5743 * The C runtime system now builds with better optimization and many
5744 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5746 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5748 * The system is now under CVS at SourceForge (instead of the
5749 CVS repository on my home machine).
5750 * The new signal handling code has been tweaked to treat register
5751 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5752 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5753 downstream, e.g. in debug-int.lisp, has implicit dependencies
5754 on the unsignedness of integer representation of machine words,
5755 and that caused the system to bomb out with infinite regress
5756 when trying to recover from type errors involving signed values,
5757 e.g. (BUTLAST '(1 2 3) -1).)
5758 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5759 (This was one of the bugs Peter Van Eynde reported back in July.)
5760 * The system now uses code inspired by Colin Walters' O(N)
5761 implementation of MAP (from the cmucl-imp@cons.org mailing
5762 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5763 inline the MAP operation, and there is more than one
5764 sequence argument to the MAP call (so that it can't just
5765 do ETYPECASE once and for all based on the type of the
5766 single sequence argument). (The old non-inline implementation
5767 of the general M-argument sequence-of-length-N case required
5768 O(M*N*N) time when any of the sequence arguments were LISTs.)
5769 * The QUIT :UNIX-CODE keyword argument has been renamed to
5770 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5771 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5773 * Raymond Wiker's patches to port dynamic loading from Linux to
5774 FreeBSD have been added.
5775 * The BUGS file is now more nearly up to date, thanks in large part
5776 to Martin Atzmueller's review of it.
5777 * The debugger now flushes standard output streams before it begins
5778 its output ("debugger invoked" and so forth).
5779 * The core version number and fasl file version number have both
5780 been incremented, because of incompatible changes in the layout
5782 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5783 used to not be called for a saved Lisp image.)
5784 * Martin Atzmueller's version of a patch to fix a compiler crash,
5785 as posted on sbcl-devel 13 September 2000, has been installed.
5786 * Instead of installing Martin Atzmueller's patch for the
5787 compiler transform for SUBSEQ, I deleted the compiler transform,
5788 and transforms for some similar consing operations.
5789 * A bug in signal handling which kept TRACE from working on OpenBSD
5791 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5792 away by constant folding
5793 * The system now defines its address space constants in one place
5794 (in the Lisp sources), and propagates them automatically elsewhere
5795 (through GENESIS and the sbcl.h file). Therefore, patching the
5796 address map is less unnecessarily tedious and error-prone. The
5797 Lisp names of address space constants have also been systematized.
5798 * CVS tags like dollar-Header-dollar have been removed from
5799 the sources, because they have never saved me trouble and
5800 they've been source of trouble working with patches and other
5801 diff-related operations.
5802 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5803 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5805 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5807 * The system has been ported to OpenBSD.
5808 * The system now compiles with a simple "sh make.sh" on the systems
5809 that it's supported on. I.e., now you no longer need to tweak
5810 text in the target-features.lisp-expr and symlinks in src/runtime/
5811 by hand, the make.sh takes care of it for you.
5812 * The system is no longer so grossly inefficient when compiling code
5813 involving vectors implemented as general (not simple) vectors (VECTOR T),
5814 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5815 which dares to use the various sequence functions on non-simple
5816 vectors, takes less of a performance hit.
5817 * There is now a primitive type predicate VECTOR-T-P
5818 to test for the (VECTOR T) type, so that e.g.
5819 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5820 can now be compiled with some semblance of efficiency. (The old code
5821 turned the type declaration into a full call to %TYPEP at runtime!)
5822 * AREF on (VECTOR T) is still not fast, since it's still compiled
5823 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5824 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5825 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5826 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5827 without making full calls to SUBTYPEP at runtime.
5828 (Some analogous efficiency issues for non-simple vectors specialized to
5829 element types other than T, or for non-simple multidimensional arrays,
5830 have not been addressed. They could almost certainly be handled the
5831 same way if anyone is motivated to do so.)
5832 * The changes in array handling break binary compatibility, so
5833 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5834 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5835 instead of (VALUES T T).
5836 * By following the instructions that Dan Barlow posted to sbcl-devel
5837 on 2 July 2000, I was able to enable primitive dynamic object
5838 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5839 functionality is not implemented (since it calls ld to resolve
5840 library references automatically, requiring RUN-PROGRAM for its
5841 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5842 try to resolve library references) is now supported.
5843 * The system now flushes the standard output streams when it terminates,
5844 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5845 them at several other probably-convenient times, e.g. in each pass of
5846 the toplevel read-eval-print loop, and after evaluating a form given
5847 as an "--eval" command-line option. (These changes were motivated by a
5848 discussion of stream flushing issues on cmucl-imp in August 2000.)
5849 * The source transform for TYPEP of array types no longer assumes
5850 that an array whose element type is a not-yet-defined type
5851 is implemented as an array of T, but instead punts, so that the
5852 type will be interpreted at runtime.
5853 * There is now some support for cross-compiling in make.sh: each of
5854 the phases of make.sh has its own script. (This should be transparent
5855 to people doing ordinary, non-cross-compile builds.)
5856 * Since my laptop doesn't have hundreds of megabytes of memory like
5857 my desktop machine, I became more motivated to do some items on
5858 my to-do list in order to reduce the size of the system a little:
5859 ** Arrange for various needed-only-at-cold-init things to be
5860 uninterned after cold init. To support this, those things have
5861 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5862 symbols with such names are now uninterned after cold init).
5863 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5864 fasl files for cold load.
5865 ** Remove the old compiler structure pooling code (which used to
5866 be conditional on the target feature :SB-ALLOC) completely.
5867 ** Redo the representation of some data in cold init to be more compact.
5868 (I also looked into supporting byte compiled code at bootstrap time,
5869 which would probably reduce the size of the system a lot, but that
5870 looked too complicated, so I punted for now.)
5871 * The maximum signal nesting depth in the src/runtime/ support code has
5872 been reduced from 4096 to 256. (I don't know any reason for the very
5873 large old value. If the new smaller value turns out to break something,
5874 I'll probably just bump it back up.)
5875 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5877 * Many, many bugs reported by Peter Van Eynde have been added to
5878 the BUGS list; some have even been fixed.
5879 * While enabling dynamic object file loading, I tried to make the
5880 code easier to understand, renaming various functions and variables
5881 with less ambiguous names, and changing some function calling
5882 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5883 * While trying to figure out how to do the OpenBSD port, I tried to
5884 clean up some of the code in src/runtime/. In particular, I dropped
5885 support for non-POSIX signal handling, added various comments,
5886 tweaked the code to reduce the number of compilation warnings, and
5887 renamed some files to increase consistency.
5888 * To support the new automatic configuration functionality in make.sh,
5889 the source file target-features.lisp-expr has been replaced with the
5890 source file base-target-features.lisp-expr and the machine-generated
5891 file local-target-features.lisp-expr.
5892 * fixed a stupid quoting error in make.sh so that using CMU CL
5893 "lisp -batch" as cross-compilation host works again
5895 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5897 * DESCRIBE no longer tries to call itself recursively to describe
5898 bound/fbound values, so that it no longer fails on symbols which are
5899 bound to themselves (like keywords, T, and NIL).
5900 * DESCRIBE now works on generic functions.
5901 * The printer now prints less-screwed-up representations of closures
5902 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5903 * A private symbol is used instead of the :EMPTY keyword previously
5904 used to mark empty slots in hash tables. Thus
5905 (DEFVAR *HT* (MAKE-HASH-TABLE))
5906 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5907 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5908 now does what ANSI says that it should. (You can still get
5909 similar noncompliant behavior if bang on the hash table
5910 implementation with all the symbols you get back from
5911 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5912 This breaks binary compatibility, since tests for equality to
5913 :EMPTY are wired into things like the macroexpansion of
5914 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5916 * There's now a minimal placeholder implementation for CL:STEP,
5917 as required by ANSI.
5918 * An obscure bug in the interaction of the normal compiler, the byte
5919 compiler, inlining, and structure predicates has been patched
5920 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5921 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5923 * Missing ordinary arguments in a macro call are now detected even
5924 when the macro lambda list contains &KEY or &REST.
5925 * The debugger no longer complains about encountering the top of the
5926 stack when you type "FRAME 0" to explicitly instruct it to go to
5927 the top of the stack. And it now prints the frame you request even
5928 if it's the current frame (instead of saying "You are here.").
5929 * As specified by ANSI, the system now always prints keywords
5930 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5932 * The default initial SIZE of HASH-TABLEs is now smaller.
5933 * Type information from CLOS class dispatch is now propagated
5934 into DEFMETHOD bodies, so that e.g.
5935 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5937 is now basically equivalent to
5938 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5939 (DECLARE (TYPE SINGLE-FLOAT X))
5941 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5942 operation, without having to do run-time type dispatch.
5943 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5944 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5945 * Since I don't seem to be making big file reorganizations very often
5946 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5947 is overflowing my ability to conveniently back them up), I've finally
5948 checked the system into CVS. (The CVS repository is on my home system,
5949 not at SourceForge -- putting it on SourceForge might come later.)
5950 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5951 high-level GC-NOTIFY-FOO functions send their output. (There's
5952 still very little control of where low-level verbose GC functions
5953 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5954 less than it used to -- the GC-NOTIFY-FOO functions are now under
5955 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5956 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5957 in only one place in the source code, and propagates it automatically
5958 everywhere that it's needed. Thus e.g. when I bump the version from
5959 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5960 * The C source files now include boilerplate legalese and documentation
5961 at the head of each file (just as the Lisp source files already did).
5962 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5963 to his page will be replaced with a link to his new CLiki service.
5965 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5967 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5968 * The build process now looks for GNU make under the default name "gmake",
5969 instead of "make" as it used to. If GNU make is not available as "gmake"
5970 on your system, you can change this default behavior by setting the
5971 GNUMAKE environment variable.
5972 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5973 can build without error under CMU CL.
5975 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5977 * There is now a partial SBCL user manual (with some new text and some
5978 text cribbed from the CMU CL manual).
5979 * The beginnings of a profiler have been added (starting with the
5980 CMU CL profiler and simplifying and cleaning up). Eventually the
5981 main interface should be through the TRACE macro, but for now,
5982 it's still accessed through vaguely CMU-CL-style functions and macros
5983 exported from the package SB-PROFILE.
5984 * Some problems left over from porting CMU CL to the new
5985 cross-compilation bootstrap process have been cleaned up:
5986 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5987 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5988 part when getting rid of the compiler *BACKEND* stuff.)
5989 ** The value of *NULL-TYPE* was screwed up, because it was
5990 being initialized before the type system knew the final
5991 definition of the 'NULL type. This screwed up several key
5992 optimizations in the compiler, causing inefficiency in all sorts
5993 of places. (I found it because I wanted to understand why
5994 GET-INTERNAL-RUN-TIME was consing.)
5995 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5996 PROCLAIM FTYPE information. Unfortunately this broke binary
5997 compatibility again, since now the forms output by DEFGENERIC
5998 to refer to functions which didn't exist in 0.6.3.
5999 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6000 can use the new (as of 0.6.3) transform for SOME into MAP into
6002 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6003 values to (INTEGER 0 1000000), so that the time code will no longer
6004 occasionally get blown up by Linux returning 1000000 microseconds
6005 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6006 its output conform to the ANSI spec. (Alas, this makes its output
6007 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6008 * A full call to MAP NIL with a single sequence argument no longer conses.
6009 * fixes to problems pointed out by Martin Atzmueller:
6010 * The manual page no longer talks about multiprocessing as though
6011 it were currently supported.
6012 * The ILISP support patches have been removed from the distribution,
6013 because as of version 5.10.1, ILISP now supports SBCL without us
6014 having to maintain patches.
6015 * added a modified version of Raymond Toy's recent CMU CL patch for
6016 EQUALP comparison of HASH-TABLE
6018 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6020 * The system still can't cross-compile itself with
6021 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6022 entails), but at least it can compile more of itself that way
6023 than it used to be able to, and various buglets which were uncovered
6024 by trying to cross-compile itself that way have now been fixed.
6025 * This release breaks binary compatibility again. This time
6026 at least I've incremented the FASL file format version to 2, so that the
6027 problem can be detected reliably instead of just causing weird errors.
6028 * various new style warnings:
6029 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6030 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6031 ** using the lexical binding of a variable named in the *FOO* style
6032 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6033 as specified by ANSI.
6034 * *RANDOM-STATE* is no longer automatically initialized from
6035 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6036 default behavior of the system is to repeat its behavior every time
6037 it's run. If you'd like to change this behavior, you can always
6038 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6039 old convention there was no comparably easy way to get the system to
6040 repeat its behavior every time it was run.
6041 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6042 FTYPE declarations has been removed, in favor of their ANSI
6043 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6044 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6045 the types of their sequence arguments can be determined at compile time.
6046 This is done through a new open code expansion for MAP which eliminates
6047 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6048 argument types can be determined at compile time.
6049 * The optimizer now transforms COERCE into an identity operation when it
6050 can prove that the coerced object is already of the correct type. (This
6051 can be a win for machine generated code, including the output of other
6052 optimization transforms, such as the MAP transform above.)
6053 * Credit information has been moved from source file headers into CREDITS.
6054 * Source file headers have been made more standard.
6055 * The CASE macro now compiles without complaining even when it has
6058 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6060 * (Note that the way that the PCL macroexpansions were rewritten
6061 to accommodate the change in DEFGENERIC below breaks binary
6062 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6063 not run under sbcl-0.6.2. Once we get out of alpha releases,
6064 i.e. hit release 1.0.0, we'll probably try to maintain binary
6065 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6066 and sbcl-1.4.4. Until then, however, it might be fairly common
6067 for maintenance releases to break binary compatibility.)
6068 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6070 * The reporting of unhandled signals has been changed to print some
6071 explanatory text as well as the report form. (Previously only
6072 the report form was printed.)
6073 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6074 it defines, so that the compiler no longer issues undefined function
6075 warnings for compiled-but-not-yet-loaded generic functions.
6076 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6077 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6078 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6079 section of the ANSI spec are supported.
6080 * The "" nickname for the "KEYWORD" package has been removed.
6081 The reader still handles symbol tokens which begin with a package marker
6082 as keywords, but it doesn't expose its mechanism for doing so in the
6083 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6084 * The system now issues STYLE-WARNINGs for contradictory TYPE
6085 proclamations. (Warnings for contradictory FTYPE proclamations would
6086 be nice too, but those can't be done usefully unless the type system
6087 is made smarter about FUNCTION types.)
6088 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6089 systematized, so that "*target-*.lisp is supposed to exist only on the
6090 target and imply that there's a related file which exists on the
6091 host, and *host-*.lisp is supposed to exist only on the host and imply
6092 that there's a related file which exists on the target. This involves a
6093 lot of renaming. Hopefully the acute confusion caused by the renaming
6094 will be justified by the reduction in chronic confusion..
6095 ** runtime-type.lisp -> early-target-type.lisp
6096 ** target-type.lisp -> late-target-type.lisp
6097 ** early-host-format.lisp -> early-format.lisp
6098 ** late-host-format.lisp -> late-format.lisp
6099 ** host-error.lisp -> misc-error.lisp
6100 ** early-error.lisp -> early-target-error.lisp
6101 ** late-error.lisp -> late-target-error.lisp
6102 ** host-defboot.lisp -> early-defboot.lisp
6103 ** code/misc.lisp -> code/target-misc.lisp
6104 ** code/host-misc.lisp -> code/misc.lisp
6105 ** code/numbers.lisp -> code/target-numbers.lisp
6106 ** code/early-numbers.lisp -> numbers.lisp
6107 ** early-host-type.lisp -> early-type.lisp
6108 ** late-host-type.lisp -> late-type.lisp
6109 ** host-typep.lisp -> typep.lisp
6110 ** load.lisp -> target-load.lisp
6111 ** host-load.lisp -> load.lisp
6112 ** host-disassem.lisp -> disassem.lisp
6113 ** host-insts.lisp -> insts.lisp
6114 ** byte-comp.lisp -> target-byte-comp.lisp
6115 ** host-byte-comp.lisp -> byte-comp.lisp
6116 ** host-signal.lisp -> signal.lisp
6117 ** host-defstruct.lisp -> defstruct.lisp
6118 ** late-target-type.lisp -> deftypes-for-target.lisp
6119 Furthermore, several other previously target-only files foo.lisp (e.g.
6120 hash-table.lisp and random.lisp) have been split into a target-and-host
6121 foo.lisp file and a target-only target-foo.lisp file, with their key type
6122 definitions in the target-and-host part, so that the cross-compiler will
6123 know more about target types.
6124 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6125 gone away. In their place are various *BACKEND-FOO* variables
6126 corresponding to the slots of the old structure.
6127 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6128 into the target SBCL has been fixed.
6129 * The chill.lisp system for loading cold code into a running SBCL
6131 * Support for the CMU CL "scavenger hook" extension has been removed.
6132 (It was undocumented and unused in the CMU CL sources that SBCL was
6133 derived from, and stale in sbcl-0.6.1.)
6134 * Various errors in the cross-compiler type system were detected
6135 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6136 (enabling various consistency checks). Many of them were fixed,
6137 but some hard problems remain, so the compiler is back to
6138 running without *TYPE-SYSTEM-INITIALIZED* for now.
6139 * As part of the cross-compiler type system cleanup, I implemented
6140 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6141 * I have started adding UNCROSS calls throughout the type system
6142 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6143 on cross-compiler input files will be able to go away, and various
6145 * CONSTANTP now returns true for quoted forms (as explicitly required
6148 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6150 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6151 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6152 (MAKE-LIST -1). In the longer term, it ought to become true
6153 that declarations are assertions even at SAFETY 1. For now, it's not
6154 quite true even at SAFETY 3, but it's at least more nearly true..
6155 (Note that this change seems to increases the size of the system by
6156 O(5%) and to decrease the speed of the compiler by 20% or more.)
6157 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6158 for the problem of printing dozens of lines of distracting information
6159 about low-level system machinery as part of the top stack frame
6160 on entry to the debugger when an undefined function was called.
6161 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6162 is not reset to COMMON-LISP-USER.
6163 * Compilation of stuff related to dyncount.lisp has been made conditional
6164 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6165 smaller. The various dyncount-related symbols have been moved into
6166 a new "SB-DYNCOUNT" package.
6167 * tty-inspect.lisp has been renamed to inspect.lisp.
6168 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6169 feature has gone away. (When we eventually port to other flavors of
6170 libc and/or Unix, we'll try to make the differences between flavors
6171 invisible at the user level.)
6172 * Various other *FEATURES* tags, and/or their associated conditionals,
6173 have been removed if obsolescent, or given better documentation, or
6174 sometimes given more-mnemonic names.
6176 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6178 * tidied up "make.sh" script
6179 * tidied up system directory structure
6180 * better "clean.sh" behavior
6181 * added doc/FOR-CMUCL-DEVELOPERS
6182 * many many small tweaks to output format, e.g. removing possibly-confusing
6183 trailing #\. character in DESCRIBE-INSTANCE
6184 * (EQUALP #\A 'A) no longer signals an error.
6185 * new hashing code, including EQUALP hashing
6186 * tidied up Lisp initialization and toplevel
6187 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6188 * command line argument processing
6189 * added POSIX-GETENV function to deal with Unix-ish environment variables
6190 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6191 terminating SBCL on EOF
6192 * non-verbose GC by default
6193 * There is no more "sbcl" shell script; the sbcl file is now the C
6194 runtime executable (just like CMU CL).
6195 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6197 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6198 symbol and package information as Lisp native symbol and package objects
6199 instead of strings naming symbols and strings naming packages. This way,
6200 whenever packages are renamed (as in warm init), debug information is
6201 transformed along with everything else.
6202 * tweaked the optimization policy declarations which control the building
6203 of SBCL itself. Now, among other things, the system no longer saves
6204 source location debugging information. (This helps two problems at once
6205 by reducing SBCL size and by keeping SBCL from trying to look for its
6206 sources -- which may not exist -- when reporting errors.)
6207 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6208 debugging and testing purposes
6209 * cleaned up printing, making the printer call PRINT-OBJECT for
6210 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6211 methods, giving nearly-ANSI behavior
6212 * converted almost all special variables to use *FOO* naming convention
6213 * deleted PARSE-TIME functionality, since it can be done portably
6214 * moved some files out of cold init into warm init
6215 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6217 * regularized formatting of source files
6218 * added an install.sh script
6219 * fixed ridiculous memory usage of cross-compiler by making
6220 compiler/alloc.lisp not try to do pooling unless it can hook
6221 itself into the GC of the cross-compilation host. Now the system
6222 builds nicely on my old laptop.
6223 * added :SB-ALLOC in target-features.lisp-expr
6224 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6225 was not implemented)
6226 * re-did condition handling and note reporting in the compiler. Notes
6227 are no longer handled by signalling conditions. Style warnings
6228 and warnings are handled more correctly and reported in such a way
6229 that it's easy to find one or the other in your output (so that you
6230 can e.g. figure out which of many problems caused COMPILE-FILE to
6232 * changed the severity of several compiler warnings from full WARNING
6233 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6234 compiler note reporting so that it doesn't use the condition system
6235 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6236 COMPILE-FILE command)
6237 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6238 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6239 no longer supported, since their implementation was deeply intertwingled
6240 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6241 * removed bogus "support" for compiler macros named (SETF FOO), and
6242 removed the compiler macro for SETF INFO (but only after making a fool
6243 of myself on the cmucl-imp mailing list by posting a bogus patch for
6244 DEFINE-COMPILER-MACRO..)
6245 * Compiled files containing forms which have side effects on the Lisp
6246 reader (such as DEFPACKAGE forms) are now handled more correctly.
6247 (Compiler queuing of top level lambdas has been suppressed by setting
6248 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6249 * deleted various currently-unused source files, e.g. gengc.lisp. They
6250 may be added back at some point e.g. when porting to other architectures,
6251 but until they are it's distracting to distribute them and to try to
6253 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6254 there were so many of them they're just distractions, and UNCROSS is
6255 known to be able to handle the current sources
6256 * moved PROFILE functionality into TRACE, so that it will be clear
6257 how the wrapping and unwrapping of functions when you profile them
6258 interacts with the wrapping and unwrapping of functions when you
6259 trace them. (Actually, the functionality isn't there yet, but at least
6260 the interface specification is there. Hopefully, the functionality will
6261 arrive with some future maintenance release.)
6262 * removed host-oops.lisp
6263 * changed signature of QUIT function to allow UNIX-CODE argument
6264 * fixed READ-SEQUENCE bug
6265 * tweaked verbose GC output so that it looks more like the progress
6266 output that ANSI specifies for functions like LOAD
6267 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6268 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob