1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.53:
3 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
4 correctly, even on wide-fixnum builds. (lp#887220)
5 * bug fix: (directory "foo/*/*.*") did not follow symlinks in foo/ that
6 resolved to directories.
8 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
9 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
10 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
11 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
12 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
13 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
14 targets is now 63 bits (up from 61).
15 * enhancement: DESCRIBE now reports a lambda-list and source location
16 for complext setf-expanders.
17 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
18 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
19 of multiple-valued places to be set to NIL, instead of signalling an
20 error (per a careful reading of CLHS 5.1.2.3).
21 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
22 * bug fix: repair crash in x86oid darwin signal handling emulation
23 when built with certain compilers.
24 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
25 rotation arguments on x86-64. (lp#882151)
26 * bug fix: low-level control flow optimisations could result in bogus
27 code in functions with tail and non-tail calls to local functions on
29 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
30 to emit literal characters > (code-char 4095), for comparisons with
32 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
33 on 64 bit platforms. (lp#881445)
34 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
35 delete the wrong file when using relative pathnames. (lp#882877)
36 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
37 sequences and :KEY NIL.
39 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
40 * enhancement: ASDF has been updated to version 2.017.
41 * enhancement: the --core command line option now accepts binaries with
43 * enhancement: when built with :sb-core-compression, core files (regular
44 or executable) can be compressed with zlib. Use the :COMPRESSION
45 argument to SAVE-LISP-AND-DIE to specify a compression level.
46 * enhancement: --[no-]merge-core-pages determines whether the runtime
47 hints the operating system that identical core pages between SBCL
48 processes should share the same physical memory. Default is to only
49 enable this for compressed cores.
50 * optimization: SLEEP no longer conses.
51 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
52 or bit-vectors when using the standard pretty-print dispatch table.
53 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
55 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
56 AREF, CHAR, etc. (lp#826971)
57 * bug fix: compiler-errors causes by integer arguments with composed of
58 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
59 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
60 expressions. (lp#770184)
61 * bug fix: complex single float literals are correctly aligned when used
62 as arguments of arithmetic operators.
63 * bug fix: on 32-bit platforms, rounding of double floats larger than a
64 fixnum is correct. (reported by Peter Keller)
65 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
66 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
68 * bug fix: redefining classes such that slots with custom allocation are
69 added or removed works again.
71 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
72 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
73 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
74 MAKE-SOCKET-STREAM if using SERVE-EVENT.
75 * enhancement: added support for socket keepalive timeout intervals
76 and probe counts on Linux.
77 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
78 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
79 * enhancement: added new toplevel options --quit and --non-interactive
81 * enhancement: the Windows port of SBCL now builds and runs on Wine
82 (thanks to Anton Kovalenko).
83 * enhancement: more, and more correct, SSE instruction definitions on
84 x86-64 (thanks to Alexander Gavrilov).
85 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
86 to help the processor execute spin loops, when applicable. Currently
87 implemented for x86 and x86-64.
88 * optimization: unsigned integer divisions by a constant are implemented
89 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
90 * optimization: improved type-derivation for LOAD-TIME-VALUE.
91 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
92 instructions. (lp#814688)
93 * bug fix: COERCE to unfinalized extended sequence classes now works.
94 (reported by Jan Moringen; lp#815155)
95 * bug fix: a compiler error during typecheck generation, reported by Eric
97 * bug fix: obsolete instance protocol fires when shared slots are added
99 * bug fix: fixed-format floating point printing with scaling factors.
101 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
102 backtraces. (lp#818460)
103 * bug fix: better backtraces for interrupted syscall frames on x86.
105 * bug fix: SSE comparison instructions can be disassembled even when one
106 operand is in memory. (lp#814702)
107 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
108 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
109 type information associated with the VALUES form.
110 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
112 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
113 first write (lp#561642).
114 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
115 * bug fix: bound propagation involving conversion of large bignums to
116 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
118 * bug fix: &REST to &MORE conversion still works in unsafe call to known
119 functions; reported by Lutz Euler (lp#826459).
120 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
123 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
124 * enhancement: errors from FD handlers now provide a restart to remove
125 the offending handler.
126 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
128 * enhancement: location of user or system initialization file can now easily
129 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
130 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
131 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
132 the thunk, as a keyword argument, :arguments.
133 * enhancement: constraint propagation is simplified (and sped up) when
134 COMPILATION-SPEED > SPEED.
135 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
136 * enhancement: debugger understands &MORE arguments better.
137 * optimization: extracting bits of a single-float on x86-64 has been
138 optimized. (lp#555201)
139 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
140 when (> SPEED SPACE).
141 * optimization: local call trampolines (x86 and x86-64) are emitted
143 * optimization: implicit value cells for dynamic-extent closed-over bindings
144 on x86 and x86-64 can hold unboxed values as well.
145 * meta-optimization: improved compilation speed, especially for large
146 functions. (lp#792363 and lp#394206)
147 * bug fix: bound derivation for floating point operations is now more
148 careful about rounding possibly closing open bounds. (lp#793771)
149 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
150 backwards incompatible change in 1.0.48.27)
151 * bug fix: occasional debugger errors in when a type-error occured in a
152 function with dynamic-extent &rest list.
153 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
154 boa-construtors can be used to initialized structure slots.
155 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
156 (lp#795705, regression)
157 * bug fix: DIRECTORY works better on logical pathnames.
158 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
159 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
160 * bug fix: the compiler no longer constant-folds NaNs in
161 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
162 * bug fix: FORMAT now handles floating point rounding correct, eg.
163 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
165 * bug fix: style warning during lambda-list introspection of generic
166 functions with both optional and key argments.
167 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
169 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
172 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
173 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
174 interrupts for its body.
175 * enhancement: source locations are now available for files loaded as
176 source, compile-time-too evaluation, and initialization files.
177 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
178 virtual source-file information, eg. overriding input-file of COMPILE-FILE
179 when a temporary file is used for compilation.
180 * enhancement: ASDF has been updated to version 2.015.3.
181 * enhancement: backtraces involving frames from the default evaluator are
183 * enhancement: RUN-PROGRAM works with user-defined binary input and output
185 * enhancement: more informative compile-time warnings and runtime errors for
186 type-errors detected at compile-time.
187 * enhancement: deadlock detection for mutexes and spinlocks.
188 * enhancement: dynamic-extent for &rest lists stack allocate only their
189 spines, not their argumets. While portable code should not rely on this,
190 particularly in combination with inlining, it should make dynamic-extent
191 easier to use safely.
192 * enhancement: SB-POSIX improvements:
193 ** WNOHANG and WUNTRACED are exported.
194 ** SYSCALL-ERROR now also provides the name of the failing system call.
195 * enhancement: --script improvements:
196 ** errors on standard input, output, and error streams are handled and
197 cause scripts to exit silently, making them easier to use in shell
199 ** backtraces from scripts now go to standard error instead of the
200 terminal even if one is available.
201 ** --script can be an argument, causing the script to be loaded from
203 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
204 strings to foreign memory.
205 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
206 a file, making it easier to understand heap dynamics.
207 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
208 allows the compiler to automatically elide rest-list allocation so long as
209 the call sites are in functions that the compiler knows cannot escape.
211 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
212 especially in safe code when none of the required arguments have changed
214 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
215 uninterruptible, as well as blocking reads from socket streams created
216 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
217 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
218 from the to-char if the from-char is not a dispatch-macro character.
219 * bug fix: references to undefined variables in function calls that are
220 optimized away now signal a runtime error. (lp#722734)
221 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
222 types from a function defined in the same file. (regression from
224 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
226 * bug fix: spurious errors during QUIT when standard streams were closed.
228 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
229 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
230 years, is now no longer supported.
231 * enhancement: read() and write() have been added to SB-POSIX.
232 * enhancement: types of DEFSTRUCT constructors are proclaimed more
233 accurately, allowing better typechecking of call-sites.
234 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
235 are no longer caught. (reverted to pre 1.0.34 behaviour)
236 * optimization: slightly faster ISQRT. (lp#713343)
237 * bug fix: better support for Solaris /bin/sh in sh-based tests.
238 * bug fix: TRACE behaves better when attempting to trace undefined
239 functions. (lp#740717)
240 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
241 to (FUNCALL #'(LAMBDA ...) ...).
242 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
243 a compile-time error. (lp#720382)
244 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
246 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
247 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
248 optimization. (regression from 1.0.45.18/1.0.46.15)
249 * bug fix: package locks did not protects against compile-time side-effects
250 of DEFUN. (lp#675584)
251 * bug fix: --dynamic-space-size argument is validated more carefully.
253 * bug fix: memory fault from printing a malformed simple-condition.
255 * bug fix: redefining classes so that slot-definition classes change now
256 engages the obsolete instance protocol. (lp#766271)
257 * bug fix: constant improper lists could break source coverage recording.
259 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
262 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
263 * bug fix: fix mach port rights leaks in mach exception handling code on
264 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
266 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
267 * enhancement: redefinition warnings for macros from different files. (lp#434657)
268 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
269 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
270 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
271 processed using EVAL -- now the appropriate toplevel form is reported instead.
272 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
273 declarations. (lp#726331)
274 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
275 that NIL/NULL is excluded from the type.
276 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
278 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
280 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
281 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
282 stack-allocated values out of their dynamic-extent. (lp#310175)
283 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
284 x86-64 builds caused a type-error.
285 * bug fix: calling COMPILE with something else than a lambda-expression as the
286 second argument reports a more sensible error. (lp#718905)
287 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
288 are detected. (lp#520607)
289 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
291 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
292 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
293 methods. (regression from 1.0.45.18)
294 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
295 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
296 * bug fix: several foreign functions accepting string also accepted NIL and
297 consequently caused a memory fault at 0 now signal a type-error instead.
299 * bug fix: under rare circumstances, constraint propagation could rewrite a
300 variable reference to refer to a variable not in scope, causing an error
301 during physical environment analysis when attempting to close over the
302 variable. (lp#551227)
303 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
305 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
306 * enhancement: largefile support on Solaris.
307 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
308 arguments (lp#710017)
309 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
310 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
312 * optimization: ERROR and CERROR are approximately 5 times faster.
313 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
314 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
315 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
316 up instance creation in those cases.
317 * optimization: arithmetic operations with multiple constant arguments in now
318 have them reduced at compile-time. (lp#676414)
319 * optimization: determining current character position on string-streams for
320 pretty-printing was overly slow.
321 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
322 lifetime analysis to overwrite closed-over variables (lp#681092).
323 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
324 were not handled correctly (lp#713063).
325 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
327 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
328 mistake. (lp#667297).
329 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
330 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
331 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
332 unintern the wrong symbol with the same name. (lp#693796)
333 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
334 making it possible to restore the initial table if it has been messed up.
337 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
338 * enhancement: ~/ and ~user/ are treated specially in pathnames.
339 Refer to documentation for details.
340 * enhancement: ASDF has been updated to version 2.010.
341 * optimization: mutated closed-over variables that are only accessed by
342 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
343 declared to be DYNAMIC-EXTENT) are stored directly in their containing
344 stack frame, rather than allocating a VALUE-CELL (lp#586103).
345 * optimization: UNWIND-PROTECT cleanup functions are now declared
347 * bug fix: backtracing function with &REST arguments now shows the full
348 argument list. (lp#310173)
349 * bug fix: return types for functions with complex lambda-lists are now
350 derived properly (lp#384892)
351 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
352 long string arguments slowed the compiler down to a crawl.
353 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
354 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
355 in the DEFMETHOD body.
356 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
357 messages, being instead replaced with the corresponding function name.
358 * bug fix: don't derive overly complex unions of numeric types for arithmetic
359 operators. (lp#309448)
361 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
362 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
363 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
364 * enhancement: ALLOCATION-INFORMATION also provides the page the object
366 * enhancement: default dynamic-space size can be configured at build-time
367 without touching source, using the --dynamic-space-size argument to make.sh.
368 * enhancement: DESCRIBE recognizes symbols naming optimization policy
369 qualities, and mentions ALWAYS-BOUND declarations.
370 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
372 * enhancement: ASDF has been updated to 2.009.
373 * enhancement: the system detects known type-erros in calls better,
374 signalling a full warning about violated proclaimed FTYPEs and violations
375 of derived FTYPEs within the same file, including self-calls.
376 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
377 * optimization: constant-folding exploits numeric and character types, in
378 addition member types.
379 * optimization: numeric, character and member types that are inhabited by
380 exactly one value are tested with EQL.
381 * optimization: more conditional branches are eliminated during IR1.
382 Branches are simplified before performing if/if-conversion, and simple
383 equivalent branches (that only read the same constant or variable) are
385 * improvements to the Windows port:
386 ** change: canonical unparsing form for pathname namestrings now uses / as
387 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
388 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
389 on Windows. (thanks to Kalyanov Dmitry)
390 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
392 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
393 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
394 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
395 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
397 * bug fix: interrupts arriving during CL:OPEN caused an error.
398 * bug fix: overeager character buffering could cause input to block
399 spuriously when reading from a pipe (lp#643686)
400 * bug fix: more efficient timer expiry should avoid starvation on systems
401 where number of SIGALRMs per second is restricted. (lp#375515)
402 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
403 * bug fix: compile-times no longer scale linearly with the size of
404 quoted lists in source-code. (lp#654289)
405 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
406 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
407 so badly. (lp#654485)
408 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
409 an error for eg. STRUCTURE. (lp#458015)
410 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
411 (lp#613871, thanks to Roman Marynchak)
412 * bug fix: more reliable &REST list type derivation. (lp#655203)
413 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
414 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
415 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
416 also declared NOTINLINE. (lp#655581)
417 * bug fix: the compiler could attempt to emit constant left shifts of
418 greater value than n-word-bits. (lp#309063)
419 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
420 type information for the function being set. (lp#659220)
421 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
422 containing self-calls were recompiled with a new signature, and failed
423 to warn when a self-call using the old signature was left in. (lp#655126)
424 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
425 :DEFAULT when the default external had character size other than 8 bits.
427 * bug fix: derived types of functions in the same file were implicitly
428 trusted, leading to potential heap corruption when those function were
429 defined incompatibly. (lp#657499)
430 * bug fix: existing ASDF source registries are ignored when building
432 * bug fix: short-form DEFSETF checks that the second argument is a symbol
433 (lp#655824, thanks to Roman Marynchak)
434 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
435 package-lock violation was detected. (lp#660752)
436 * bug fix: the system can store different docstrings for a single function
437 under different names. (lp#661631, regression from 1.0.29.24)
438 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
439 properly. (lp#384801)
440 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
441 of specified length could confuse the type derivation in unsafe code.
443 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
444 fork with multiple Lisp threads running is made on every platform,
445 not just Darwin. (lp#451111)
446 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
447 around when core was saved, which could cause undefined behaviour when the
449 * bug fix: Allow UNTRACE of functions that are no longer defined
450 (lp#667657, thanks to Attila Lendvai)
451 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
452 compile-time warning (lp#664373, thanks to Stas Boukarev)
454 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
455 * incompatible change: FD-STREAMS no longer participate in the serve-event
456 event-loop by default. (lp#316072)
457 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
458 affects streams from CL:OPEN.
459 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
460 default, but this is liable to change: applications needing serve-event
461 for socket streams should explicitly request it using :SERVE-EVENTS T
463 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
465 * enhancement: CLOS effective method functions and defclass slot typechecking
466 function now have debug names for use in backtraces and profiles.
467 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
469 * enhancement: symbols are printed using fully qualified names in several
470 error and warning messages which are often associated with package
471 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
472 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
473 thanks to Andrew Golding)
474 * bug fix: reading /proc files on Linux works. (lp#425199)
475 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
477 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
478 breaking code that tried to write the value of a printer control variable.
479 (lp#581564, thanks to Stas Boukarev)
480 * bug fix: WRITE compiler macro did not handle output stream designators
481 correctly. (lp#598374, thanks to Stas Boukarev)
482 * bug fix: better availability of names of foreign functions in backtraces
483 on Linux. (lp#626962, thanks to Stas Boukarev)
484 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
485 lp#627581, thanks to Josh Elsasser and Jim Wise)
486 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
487 thanks to Josh Elsasser)
488 * bug fix: using aliases for builtin classes as defmethod specializers
489 without adding DEFTYPEs for them works. (lp#618387)
490 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
492 * bug fix: legally dynamic-extent lists and vectors used as
493 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
494 * bug fix: inline-expansion creating references to dead lambda-variables
495 (lp#454681, thanks to Alexey Dejneka)
496 * bug fix: better error message for bogus numerical arguments to RANDOM.
497 (lp#598986, thanks to Stas Boukarev)
498 * bug fix: the compiler occasionally inlined references from incompatible
499 environments occurs. (lp#308951)
500 * bug fix: the compiler threw an error when trying to compile a local
501 function (labels or flet) known to take a specialized complex argument.
502 (not in launchpad, reported by sykopomp in #lispgames)
503 * bug fix: package-locks failed to protect against compile-time effects of
504 DEFUN when the symbol previously had a macro definition. (lp#576637)
505 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
506 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
507 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
508 * bug fix: evaluation in debugger REPL works using the global context when
509 in frames that do not have sufficient debug information.
510 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
512 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
514 * bug fix: interrupt taking longer than the requested period caused SLEEP
515 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
517 changes in sbcl-1.0.42 relative to sbcl-1.0.41
519 ** Cross-compilation host is now specified to make.sh using
520 command-line argument --xc-host=<command> instead of a positional
521 argument. (thanks to Daniel Herring)
522 ** Install location can be specified to make.sh using command-line
523 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
524 * optimization: The default implementation of
525 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
526 * enhancement: Explicit memory barrier operations are now available for use
527 by multithreaded code. See documentation for details.
528 * enhancement: Experimental support for threading on Linux/PPC.
529 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
530 * bug fix: EXPT signals an error if first argument is a zero and second
531 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
532 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
533 (lp#576594, thanks to Roman Marynchak)
534 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
535 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
537 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
538 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
539 cached, leading to many fewer expensive calls to
540 COMPUTE-APPLICABLE-METHODS.
541 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
542 CLASS argument, search for and call an appropriate optimized ctor function
544 * bug fix: WRITE always returns the correct value.
546 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
547 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
548 * bug fix: Name conflicts between symbols passed as arguments to a single
549 call to IMPORT no longer add multiple symbols with the same name to the
550 package (detectable via DO-SYMBOLS).
551 * bug fix: support building without the dlshim on darwin x86 and x86-64
553 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
555 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
556 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
558 * bug fix: linkage-table entries on PPC now no longer overflow their
559 space allocation (potentially causing crashes if they are written out
561 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
562 platforms, preventing the GC from seeing stale pointers on the control
563 stack in subsequent GCs (which would, and does, break invariants).
564 * bug fix: 32-bit unicode external formats now work on big-endian systems.
565 * bug fix: Literal characters with code points greater than about 32767
566 now work on PPC UNICODE builds.
567 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
568 high order bits are explicitly cleared out. In some contrived situations,
569 this could lead to wrong results in mixed real/complex float arithmetic.
570 * bug fix: Fix function/macro redefinition warnings when building with
571 clisp. (lp#576787, thanks to Josh Elsasser)
572 * new platform: experimental support for ppc/openbsd (thanks to Josh
574 * bug fix: Floating-point traps now work on ppc/linux.
576 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
577 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
578 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
579 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
580 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
581 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
582 SB-THREAD:GRAB-MUTEX.
583 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
584 contain additional data structures and tools for concurrent programming;
585 at the moment it contains a lock-free queue, and a lock-free mailbox
587 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
588 GET-MUTEX but takes &key rather than &optional parameters. Also added
589 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
591 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
592 SB-THREAD:WAIT-ON-SEMAPHORE.
593 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
595 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
596 conditions to defer the deadline for forever.
597 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
599 * enhancement: errors from NO-APPLICABLE-METHOD and
600 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
601 generic function call.
602 * enhancement: SB-BSD-SOCKET improvements
603 ** sockets and socket streams now have a more informative printed
604 representation based on the corresponding SOCKET-NAME and
606 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
608 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
609 CL:CLOSE when appropriate, and no longer disassociates the stream
610 from the socket if close failed. (lp#543951)
611 * improvements to the instrumenting profiler
612 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
613 ** optimization: counters no longer use locks for the overflow mode.
614 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
615 incurred an off-by-one miscount.
616 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
617 * enhancement: improved DEFMETHOD pretty-printing.
618 * enhancement: perform range reduction when arguments are too large for
619 x87's transcendentals (instead of returning 0). (lp#327192)
620 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
621 some of CL-PPCRE's macros. (lp#570079)
622 * enhancement: our machine code is slightly less hostile to valgrind on
624 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
625 to Robert Swindells and Aleksej Saushev)
626 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
627 * bug fix: a rare case of startup-time page table corruption.
628 * bug fix: a semaphore with multiple waiters and some of them unwinding due
629 to timeouts could be left in an inconsistent state.
630 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
631 * bug fix: misoptimization of multiplication by one in
632 (SB-C::FLOAT-ACCURACY 0) policies.
633 * bug fix: miscounts in SB-PROFILE.
634 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
635 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
636 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
637 up itself" (March 2010) for further details.
638 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
639 against length of the list if the element is found before the specified
640 END is reached. (thanks to Alec Berryman, lp#554385)
641 * bug fix: errors signalled during package graph modification no longer
642 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
643 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
644 :SB-DOC feature. (lp#552564)
645 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
646 * bug fix: more robust runtime executable path detection. (lp#375549)
647 * bug fix: GCD always returns positive values. (lp#413680)
648 * bug fix: Converting division to multiplication by reciprocal handles
650 * bug fix: We were too eager in eliding range reduction tests on x87.
651 The maximal magnitude is 2^63, not 2^64.
652 * bug fix: Transforms for TRUNCATE don't die when the result is completely
654 * bug fix: Maybe restore buildability on Alpha.
655 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
657 * bug fix: RANDOM-STATE can be printed readably again.
658 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
659 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
660 types) could result in type mismatches during compilation.
662 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
663 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
664 stack frame thrown from.
665 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
666 compiler optimization qualities inside dynamic extent of its body.
667 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
668 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
670 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
671 constraint propgation, allowing better compilation eg. when used to
672 access structures with WITH-SLOTS. (lp#520366)
673 * optimization: the compiler is now more aware of the type of the underlying
674 storage vector for multidimensional simple arrays resulting in better code
675 for accessing such arrays.
676 * optimization: passing NIL as the environment argument to TYPEP no longer
677 inhibits optimizing it. (lp#309788)
678 * optimization: more efficient register usage when handling single-float
679 arguments on x86-64. (thanks to Lutz Euler)
680 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
681 pre-allocated temporary vectors. (lp#496249)
682 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
683 in :INITIAL-CONTENTS. (lp#523612)
684 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
685 functions. (lp#524707)
686 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
687 WITH-SLOTS usages during compilation.
688 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
689 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
690 all x86oid platforms with :UD2-BREAKPOINTS target feature.
691 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
692 instruction (tested on x86oid linux with ud2-breakpoints).
693 * bug fix: slam.sh now works on win32.
694 * bug fix: better differences of numeric types. (lp#309124)
695 * bug fix: arrays declared intersection and union types can have their
696 upgraded element type derived. (lp#316078)
697 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
698 threads started during profiling. (lp#472499)
699 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
701 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
702 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
703 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
704 values instead of signaling an error. (lp#309093)
705 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
707 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
708 declarations (lp#497321)
709 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
710 and failed to detect circular lists (lp#452008)
711 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
713 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
714 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
715 due to it, so that handlers can run.
716 * bug fix: reparsing undefined types if they have become defined since
718 * bug fix: missing &REST type in a proclamation for a function with both
719 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
720 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
721 expanded calls (lp#542174)
722 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
723 than just at toplevel form.
725 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
726 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
727 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
728 but work on type specifiers.
729 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
730 to name a type specifier.
731 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
732 specifier is valid where "valid" basically means "would be accepted as
733 second argument of TYPEP".
734 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
735 returns the function's declared, or derived FTYPE.
736 * new feature: SB-POSIX now supports accessing the d_ino member of
737 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
738 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
739 provide for seeding a RANDOM-STATE object with user-provided data or
740 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
741 attempt to initialize the returned state from the operating system's
742 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
743 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
744 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
745 * bug fix: Fix grammar and style issues for the docstrings of
746 printer-related variables and functions. (Thanks to mon_key; launchpad
748 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
750 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
751 in a row even though a handler defered the deadline long into the
753 * bug fix: A deadline handler was run without interrupts enabled for a
754 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
755 in infinitely spinning, non-killable threads.
756 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
757 before reaching the erring stack frame.
758 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
759 real power. (launchpad bug lp#525949)
760 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
761 GENCGC platforms. (launchpad bug lp#529014)
762 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
763 (launchpad bug lp#525916)
764 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
765 (Thanks to Robert Goldman)
767 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
768 * optimization: ROUND with a single single-float or double-float argument
769 is properly inlined when possible.
770 * optimization: Slightly better code is generated for integer<->float
771 conversions and for single-float<->double-float conversions on x86-64.
772 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
773 code for 32-bit and 64-bit rotations on x86-64.
774 * bug fix: The install script changes the ownership of directories as well
775 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
776 launchpad bug lp#508485)
777 * bug fix: TRUNCATE with a single single-float or double-float argument is
778 properly inlined when possible. (launchpad bug lp#489388)
779 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
780 no longer causes a compiler error on x86 and ppc.
781 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
782 always relative to *READTABLE* rather than the passed argument.
784 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
785 * minor incompatible change: threading support is now enabled by default
787 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
789 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
790 are now caught and reported just like errors during macroexpansion.
791 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
792 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
793 * enhancement: ASDF systems can now depends on SB-QUEUE.
794 * fixes and improvements related to Unicode and external formats:
795 ** bug fix: error handling and restart usage in the ucs-2 external format
797 ** there is now an implementation of the ucs-4 external format.
798 ** the utf-16 and utf-32 external formats are supported.
799 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
800 in the environment. setenv() and unsetenv() are also provided. (reported by
801 Fare Rideau; launchpad bug lp#460455)
802 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
803 loading. This ensures sensible errors for .FASL files from other
804 implementations on case-insensitive filesystems. (reported by Willem
805 Broekema; launchpad bug lp#489417)
806 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
807 Willem Broekema; launchpad bug lp#489698).
808 * bug fix: some minor code rearrangements to reenable warning-free building
809 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
810 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
812 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
815 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
816 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
817 * improvement: support O_LARGEFILE access to files larger than 2GB on
818 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
819 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
820 definitions for methods specializing on the passed class itself.
821 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
822 definitions for methods specializing on the passed class itself, or on
824 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
825 about itself during the build (e.g. for M-? in Slime), if this flag is
826 enabled in customize-target-features.lisp. This will increase the core
827 size by about 5-6mb, though, so it's mostly interesting to SBCL
829 * new feature: various GENCGC tuning parameters have been experimentally
830 documented and exported from SB-EXT. See documentation for details.
831 * fixes and improvements related to Unicode and external formats:
832 ** the Unicode character database has been upgraded to the
833 Unicode 5.2 standard, giving names and properties to a number of new
834 characters, and providing a few extra characters with case
836 ** improvement: restarts for providing replacement input/output on coding
837 errors for fd-stream external formats.
838 ** improvement: where :<encoding> is a keyword corresponding to an
839 external format the system supports, it is now possible to specify
840 (:<encoding> :replacement <character>) as an external format which will
841 automatically substitute <character> on encoding or decoding errors for
842 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
844 ** improvement: the file streams underlying the standard streams (such as
845 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
846 which uses the replacement mechanism to handle encoding errors,
847 preventing various infinite error chains and unrecoverable I/O
849 ** minor incompatible change: the utf-8 external format now correctly
850 refuses to encode Lisp characters in the surrogate range (char-codes
851 between #xd800 and #xdfff).
852 ** fix a typo preventing conversion of strings into octet vectors
853 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
855 ** fix a bug in the octet multibyte handling of decoding errors and the
856 USE-VALUE restart. (launchpad bug lp#314939)
857 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
858 restart on fd-stream decoding errors.
859 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
860 error is near the end of file.
861 ** fix a double-error case in unibyte octet conversions, when the first
862 use of USE-VALUE is ignored.
863 ** fix bugs in handling of undefined code points in unibyte encodings.
864 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
865 streams after an UNREAD-CHAR.
866 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
867 object is allocated in a boxed region of dynamic space.
868 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
869 fork with multiple Lisp threads running is made, instead of going
870 ahead with unpredictable consequences. (reported by Leslie Polzer)
871 * bug fix: uses of slot accessors on specialized method parameters within
872 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
873 error while finalizing the class. This fix may cause classes with slot
874 accessors to be finalized later than previously. (reported by Lars Rune
875 Nøstdal; launchpad bug lp#473699)
876 * bug fix: restore buildability on the MIPS platform. (regression from
877 1.0.30.38, reported by Samium Gromoff)
878 * bug fix: inspecting closures is less likely to fail with a type error.
879 * bug fix: no timer starvation when setting the system clock back.
880 (launchpad bug lp#460283)
881 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
882 standard pprint dispatch table as specified by CLHS.
883 * bug fix: give CLISP a hint about a type declaration to enable it to build
884 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
886 * bug fix: correctly dump literal objects in defaulting forms of arglists.
887 (reported by Attila Lendvai; launchpad bug lp#310132)
888 * bug fix: distinguish in type specifiers between arrays that might be
889 complex and arrays that are definitely complex. (launchpad bug lp#309129)
890 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
891 type. (reported by Levente Mészáros; launchpad bug lp#485972)
892 * bug fix: setting the value of a symbol-macro within a method in the
893 presence of type declarations works properly again. (reported by Iban
894 Hatchondo; launchpad bug lp#485019)
896 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
897 * optimization: faster FIND and POSITION on strings of unknown element type
898 in high SPEED policies. (thanks to Karol Swietlicki)
899 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
901 * improvement: better error signalling for bogus parameter specializer names
902 in DEFMETHOD forms (reported by Pluijzer)
903 * bug fix: DELETE-FILE once again works on logical pathnames (regression
905 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
907 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
908 removes previous default initargs (reported by Lars Rune Nøstdal and
910 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
911 lambda-lists. (reported by Peter Seibel)
912 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
913 correctly when starting from an executable core without saved runtime
914 options (reported by Faré Rideau, thanks to Zach Beane)
915 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
916 an optimization note instead. (reported by Martin Cracauer)
917 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
918 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
919 new process group if it doesn't need to share stdin with the sbcl
920 process. (thanks to Leslie Polzer)
921 * bug fix: SATISFIES could be misoptimized to refer to a local function.
922 (reported by Stanislaw Halik)
924 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
925 * improvement: stack allocation is should now be possible in all nested
926 inlining cases: failure to stack allocate when equivalent code is manually
927 open coded is now considered a bug.
928 * improvements related to Unicode:
929 ** the Unicode character database has been upgraded to the
930 Unicode 5.1 standard, giving names and properties to a number of new
931 characters, and providing a few extra characters with case
933 ** the system now recognizes and produces names for Unicode Hangul
935 ** the EBCDIC-US external-format is now supported for octet operations
936 (as well as for stream operations).
937 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
938 be used to output toplevel compile-time effects into a separate .CFASL
940 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
941 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
943 * optimization: TRUNCATE on known single- and double-floats is upto 25%
945 * optimization: division of floating point numbers by constants uses
946 multiplication by reciprocal when an exact reciprocal exists.
947 * optimization: multiplication of single- and double-floats floats by
948 constant two has been optimized.
949 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
950 sufficient type information is available. (thanks to Leslie Polzer)
951 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
952 known structure objects are as efficient as defstruct generated accessors.
953 * optimization: unused vector creation can now be optimized away.
954 * improvement: ASDF systems can now depends on SB-INTROSPECT.
955 * improvement: a STYLE-WARNING is signalled when a generic function
956 clobbers an earlier FTYPE proclamation.
957 * improvement: the compiler is able to track the effective type of
958 generic function across method addition and removal even in the
959 absence of an explicit DEFGENERIC.
960 * improvement: DESCRIBE now reports on symbols naming undefined
961 but assumed or declared function as well.
962 * improvement: recompilation of systems using SB-GROVEL now works
963 (thanks to Leslie Polzer)
964 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
965 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
967 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
968 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
969 well as user defined declaration names.
970 ** VARIABLE-INFORMATION is now aware of alien variables.
971 * improvement: improved address space layout on OpenBSD (thanks to Josh
973 * improvement: pretty-printing of various Lisp forms has been improved
974 (thanks to Tobias Rittweiler)
975 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
976 unused were deleted in safe code. (reported by John Fremlin)
977 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
979 * bug fix: some out-of-line array predicates were missing (reported by
981 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
983 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
984 (thanks to Larry D'Anna)
985 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
986 as well. (reported by Josh Elsasser)
987 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
988 leading to possible attempts to delete the same file twice. See docstring
989 on DELETE-FILE for details. (reported by John Fremlin)
990 * bug fix: DELETE-FILE once again deletes the file named by the pathname
991 designator argument, rather than its truename. (reported by Luis
993 * bug fix: the low-level debugger had 32-bit assumptions and was missing
994 information about some array types. (thanks to Luis Oliveira)
995 * bug fix: moderately complex combinations of inline expansions could
996 be miscompiled if the result was declared to be dynamic extent.
997 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
998 form (+ <variable> <integer>) were miscompiled under certain
1000 * bug fix: in some cases no compiler note about failure to stack allocate
1001 was emitted, even if the objects were in fact heap allocated.
1002 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1003 allocation could cause objects users might reasonably expect to
1004 be heap allocated to be stack allocated.
1005 * bug fix: DESCRIBE signalled an error for generic functions under
1006 certain circumstances. (thanks to Leslie Polzer)
1007 * bug fix: Fixed spelling of an error message.
1009 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1010 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1011 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1012 of SB-THREAD:THREAD-ERROR-THREAD.
1013 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1014 * new feature: docstrings for local and anonymous functions are no longer
1015 discarded. (thanks to Leslie Polzer)
1016 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1017 values in other threads.
1018 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1019 about object allocation.
1020 * optimization: division of a real float by a complex float is implemented
1021 with a specialised code sequence.
1022 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1023 keywords is an order of magnitude faster.
1024 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1025 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1026 methods, and similarly for non-standard metaclass classes as long as there
1027 are no methods additional on MAKE-INSTANCE.
1028 * optimization: more efficient type-checks for FIXNUMs when the value
1029 is known to be a signed word on x86 and x86-64.
1030 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1031 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1033 * optimization: compiler is smarter about delegating argument type checks to
1035 * optimization: several character functions are now compiled somewhat more
1036 efficiently. (reported by Lynn Quam)
1037 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1038 * improvement: less unsafe constant folding in floating point arithmetic,
1039 especially for mixed complex/real -float operations.
1040 * optimization: constant double and single floats are stored in native
1041 unboxed format on x86[-64].
1042 * optimization: smarter code for arithmetic operations with constant floats,
1043 complex floats, or integers on x86[-64].
1044 * optimization: smarter code for conjugate/multiplication of float complexes
1045 and abs/negate of floats on x86-64.
1046 * optimization: more efficient complex float and real float operations on
1048 * improvement: complex float division is slightly more stable.
1049 * improvement: DESCRIBE output has been reworked to be easier to read and
1050 contains more pertinent information.
1051 * improvement: failure to provide requested stack allocation compiler notes
1052 provided in all cases (requested stack allocation not happening without a
1053 note being issued is now considered a bug.)
1054 * bug fix: SB-POSIX exports the documented types and functions
1055 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1056 types. (reported by "abhi")
1057 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1058 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1059 (thanks to Paul Khuong)
1060 * bug fix: looping around HANDLER-CASE could silently consume stack space
1061 on each iteration. (reported by "foobar")
1062 * bug fix: better error signalling when calls to functions seeking elements
1063 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1064 (reported by Tobias Rittweiler)
1065 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1066 directory components now works as it used to. (various prolems reported by
1067 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1068 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1069 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1070 * bug fix: bogus undefined variable warnings from fopcompiled references to
1071 global variables. (thanks to Lars Rune Nøstdal)
1072 * bug fix: foreign function names should now appear in backtraces on
1073 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1074 * bug fix: SETF compiler macro documentation strings are not discarded
1076 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1077 (thanks to Alex Plotnick)
1078 * bug fix: SLEEP accepts large integer arguments, truncating them to
1079 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1080 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1081 * bug fix: compiler notes for expensive slot type checks could be emitted
1082 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1084 changes in sbcl-1.0.29 relative to 1.0.28:
1085 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1086 https://bugs.launchpad.net/sbcl
1087 Bugs can be reported directly there, or by sending email to
1088 sbcl-bugs@lists.sourceforge.net
1089 (no subscription required.)
1090 * minor incompatible change: under weak type checking policy integer
1091 types are weakened less aggressively.
1092 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1093 allowed to return, which causes SBCL to quit with exit status 0. Previously
1094 if the function returned with a small integer return value, that value
1095 was accidentally reused as the exit status.
1096 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1097 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1098 :HASH-FUNCTION argument. Refer to user manual for details.
1099 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1101 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1102 microseconds since the Unix epoch on all platforms.
1103 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1104 allows the compiler to safely elide boundedness checks for special
1106 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1107 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1108 efficiency measure for threaded platforms, but also valueable in
1110 * new feature: UNC pathnames are now understood by the system on Windows.
1111 * optimization: the compiler uses a specialized version of FILL when the
1112 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1114 * optimization: accesses to potentially non-simple arrays where element type
1115 is known are 50% faster.
1116 * optimization: compiler now generates faster array typechecking code.
1117 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1119 * optimization: multidimensional array accesses in the absence of type
1120 information regarding array rank are approximately 10% faster due to
1121 open coding of ARRAY-RANK.
1122 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1123 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1125 * optimization: result of call to VECTOR can now be stack allocated.
1126 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1127 as long as the resulting array is one-dimensional and has a known
1128 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1129 length of the list matches the known length of the vector does not
1130 allocate the list as an intermediate step. Ditto for VECTOR and simple
1132 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1133 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1134 known element type, and is known to be simple and one dimensional.
1135 * improvement: SBCL now emits a compiler note where stack allocation was
1136 requested but could not be provided (not in all cases, unfortunately)
1137 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1138 * improvement: pretty-printing loop has been implemented properly. (thanks
1139 to Tobias Rittweiler)
1140 * documentation: CLOS slot typechecing policy has been documented.
1141 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1142 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1143 pointer, leading to memory faults. (thanks to Bart Botta)
1144 * bug fix: better floating point exception handling on x86/OpenBSD.
1145 (thanks to Josh Elsasser)
1146 * bug fix: exit status from QUIT when called under --script was lost
1147 (reported by Hubert Kauker)
1148 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1149 same implementation of FILL to initialize the array, even if a more
1150 efficient one was available (reported by Stas Boukarev, thanks to
1152 * bug fix: potential miscompilation of array stack allocation on x86 and
1153 x86-64. (reported by Time Tossavainen)
1154 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1155 result in their subforms being treated as top level forms. (reported by
1157 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1158 than a machine register could leave garbage in the high bits of the
1159 result register (bug 316325).
1160 * bug fix: disable address space randomization Linux/x86-64 as well,
1161 not just x86-64. (reported by Ken Olum)
1162 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1163 generate incorrect code.
1164 * bug fix: #201; type inference for CONS and ARRAY types could derive
1165 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1166 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1167 could not be assigned to or bound with PROGV. (reported by Lorenz
1169 * bug fix: the value of CL:- in the inspector was the previous expression
1170 evaluated rather than the expression being evaluated.
1171 * bug fix: constants can no longer be locally declared special.
1172 * bug fix: signals delivered to threads started from foreign land (read:
1173 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1174 thread by blocking all signals and resignalling.
1175 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1176 from :INITFORM, if any.
1178 changes in sbcl-1.0.28 relative to 1.0.27:
1179 * a number of bugs in cross-compilation have been fixed, with the ultimate
1180 result that building under (at least) clisp should be much more reliable.
1181 * minor incompatible changes: echo-streams now propagate unread-char to the
1182 underlying input stream, and no longer permit unreading more than one
1184 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1185 frames, allowing for instance more reliable backtraces.
1186 * improvement: the debugger REPL can now reference lexical variables
1187 by name directly for code compiled with (DEBUG 3).
1188 * improvement: errors from malformed declarations now have better source
1189 paths associated with them. (thanks to Tobias Rittweiler)
1190 * optimization: faster local calls on x86/x86-64
1191 * bug fix: some error messages for out-of-bound array indexes confused the
1192 index and the bound. (thanks to Stas Boukarev)
1193 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1195 * bug fix: running regressions tests in shells without OSTYPE set now works.
1196 (reported by Harald Hanche-Olsen)
1197 * bug fix: more robust static space exhaustion signalling from
1198 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1199 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1200 docstring away instead of storing it under names such as (LAMBDA (X)).
1201 (reported by Leslie Polzer)
1202 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1203 (thanks to Ole Arndt for the patch)
1204 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1205 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1206 potentially-invalid effective methods in its cache.
1207 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1208 instances as well (thanks to Paul Khuong)
1209 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1210 SB-POSIX:WAITPID and their C equivalents.
1211 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1213 changes in sbcl-1.0.27 relative to 1.0.26:
1214 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1215 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1216 * improvement: the system either recovers from stack exhaustion or dies
1217 properly as opposed to leaving the user uncertain of whether the handler
1218 trampled on some random memory next to the stack or having to rely on
1219 --lose-on-corruption (which is still a good idea to use in production
1220 because stack exhaustion can happen in signal handlers which will likely
1222 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1223 1.0.25.37, reported by Harald Hanche-Olsen)
1224 * bug fix: work around signal delivery bug in darwin (regression from
1225 1.0.25.44, reported by Sidney Markowitz)
1226 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1228 changes in sbcl-1.0.26 relative to 1.0.25:
1229 * incompatible change: an interruption (be it a function passed to
1230 INTERRUPT-THREAD or a timer function) runs in an environment where
1231 interrupts can be enabled. The interruption can use
1232 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1233 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1234 potentially running out of stack. Keep in mind that in the absence
1235 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1236 acquiring a lock can enable interrupts.
1237 * incompatible change: GC-OFF and GC-ON are removed, as they were
1238 always unsafe. Use WITHOUT-GCING instead.
1239 * new feature: runtime option --disable-ldb
1240 * new feature: runtime option --lose-on-corruption to die at the
1241 slightest hint of possibly non-recoverable errors: running out of
1242 memory, stack, alien stack, binding stack, encountering a memory
1243 fault, etc. In the absence of --lose-on-corruption a warning is
1245 * enhancement: detect binding stack exhaustion
1246 * enhancement: detect alien stack exhaustion on x86/x86-64
1247 * improvement: generally more stable and reliable interrupt handling
1248 * improvement: there is a per thread interruption queue,
1249 interruptions are executed in order of arrival
1250 * improvement: a repeating timer reschedules itself when the it has
1251 finished, but expiration times are spaced equally. If an
1252 expiration time is in the past it will trigger after a short grace
1253 period that may give a chance to other things to run.
1254 * optimization: slightly faster gc on multithreaded builds
1255 * optimization: faster WITHOUT-GCING
1256 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1257 important locks so that the debugger/handler doesn't produce
1258 recursive errors or deadlock.
1259 * bug fix: real-time signals are not used anymore, so no more
1260 hanging when the system wide real-time signal queue gets full.
1261 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1263 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1264 * bug fix: fix random memory faults related to interrupts on alpha
1265 * bug fix: fix random memory faults related to interrupts on sparc
1266 * bug fix: fix deadlocks related to starting threads
1267 * bug fix: fix deadlines on locks on futex platforms
1268 * bug fix: restore errno in signal handlers
1269 * bug fix: fix deadlocks related to hash tables
1270 * bug fix: fix deadlocks in pcl
1272 changes in sbcl-1.0.25 relative to 1.0.24:
1273 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1274 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1275 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1276 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1277 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1278 better name and does not return values so stale on multiprocessor systems.
1279 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1281 * improvement: unithread builds keep track of MUTEX-VALUE.
1282 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1283 stream anymore making it thread safe to have a concurrent reader and
1284 a writer, for instance, in a pipe.
1285 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1286 arguments, making compiler-macros for SETF-functions able to inspect
1287 their constant arguments.
1288 * improvement: COMPILE-FILE reports times with millisecond accuracy
1289 (thanks to Luis Oliveira)
1290 * optimization: CHAR-CODE type derivation has been improved, making
1291 TYPEP elimination on subtypes of CHARACTER work better. (reported
1292 by Tobias Rittweiler, patch by Paul Khuong)
1293 * bug fix: setting alien structure fields of type struct by value now
1294 computes the right offset for the memory copy.
1295 * bug fix: compilation problem involving inlined calls to aliens with
1296 result type VOID. (reported by Ken Olum)
1297 * bug fix: #235a; sequential inline expasion in different policies no
1298 longer reuses the functional from the previous expansion site.
1299 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1300 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1301 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1302 cause an implied type redefinition. Regression from 1.0.21.29.
1303 * bug fix: sign-extension of small signed return values now works with C
1304 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1305 * improvements to the Windows port:
1306 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1307 Westfold, thanks to Rudi Schlatte)
1309 changes in sbcl-1.0.24 relative to 1.0.23:
1310 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1311 vector of a multidimensional SIMPLE-ARRAY.
1312 * new feature: the system now signals a continuable error if standard
1313 readtable modification is attempted. (thanks to Tobias Rittweiler)
1314 * new feature: DIRECTORY has been extended with a non-standard keyword
1315 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1316 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1317 has been robustified and documented better. (thanks to Robert Goldman)
1318 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1319 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1320 * tradeoff: constant FORMAT control strings are now compiled unless
1321 SPACE > SPEED (previously only when SPEED > SPACE.)
1322 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1324 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1326 * bug fix: lexical type declarations are now correctly reported by
1327 SB-CLTL2. (reported by Larry D'Anna)
1328 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1329 using UTF-8 as external format. (thanks to Luis Oliveira)
1330 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1331 are signalled correctly. (thanks to Stas Boukarev)
1332 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1333 designator. (thanks to Tobias Rittweiler)
1334 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1335 designator, and returns T instead of the function. (thanks to
1337 * bug fix: direct superclasses of STANDARD-CLASS and
1338 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1339 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1340 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1341 when no class with the named slot yet exists no longer causes a
1342 compile-time style-warning.
1343 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1344 in safe code. (reported by Didier Verna)
1345 * bug fix: #430; nested structure constructors can stack allocate.
1346 * bug fix: on some 64-bit platforms dynamic space size was truncated
1347 to #xffff0000 bytes. (reported by Benjamin Lambert)
1348 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1349 REPL unusable. (reported by Daniel Herring)
1350 * bug fix: return values of READ-SEQUENCE did not take :START into
1351 account on file streams, regressions since 1.0.12.22. (reported by
1352 Thomas Russ, patch by Paul Khuong)
1353 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1354 method specializer used to confuse permuation vector optimization.
1355 * bug fix: system inserted bogus implicit type declarations for local
1356 special variables in DEFMETHOD bodies.
1357 * bug fix: #354; duplicated frames in backtraces due to
1358 non-tail-call-optimized XEPs to functions with return type NIL
1360 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1361 initializes structure object slots according to DEFSTRUCT initforms,
1362 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1363 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1364 (reported by Bruno Haible and Stephen Wilson)
1365 * bug fix: #395; fill-pointer output streams used now support
1366 element-type BASE-CHAR as well.
1367 * bug fix: compiler error when attempting to derive return value of
1368 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1370 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1372 * bug fix: Mac OS X binaries should now be portable between Leopard
1375 changes in sbcl-1.0.23 relative to 1.0.22:
1376 * enhancement: when disassembling method functions, disassembly
1377 for the associated fast function is also produced.
1378 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1380 * optimization: printing with *PRINT-PRETTY* true is now more
1381 efficient as long as the object being printed doesn't require
1382 special handling by the pretty printer.
1383 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1384 now interact correctly with type declarations.
1385 * partial bug fix: PCL detects infinite recursion during wrapper
1386 validation. (thanks to Attila Lendvai)
1387 * bug fix: #426; nested function calls are inlined properly.
1388 Previously if FOO was an inline function, in calls of the form
1389 (FOO (FOO ...)) the outer call was not inlined.
1390 * bug fix: long long arguments passed in registers to alien
1391 functions on PowerPC Linux and NetBSD are now handled correctly
1392 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1394 changes in sbcl-1.0.22 relative to 1.0.21:
1395 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1396 for the shared object in the current directory, but passes the native
1397 namestring of the designated pathname to the operation system's shared
1398 object loading function as-it.
1399 * minor incompatible change: --disable-debugger toplevel option now takes
1400 effect before processing of initialization files and --eval or --load
1402 * new feature: new commandline argument: --script, which supports
1403 shebang lines. See documentation for details. (based on work by
1405 * new feature: SAVE-LISP-AND-DIE can save current values of
1406 --dynamic-space-size and --control-stack-size in the executable core,
1407 causing it to skip normal runtime option processing. See documentation
1408 for details. (thanks to Zach Beane)
1409 * enhancement: inoccous calls to EVAL or generic functions dispatching
1410 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1411 * enhancement: the system no longer resignals errors from --load and
1412 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1413 associated with the original error to be lost. (thanks to Ariel
1415 * enhancement: :DONT-SAVE keyword argument has been added to
1416 LOAD-SHARED-OBJECT for controlling interaction with
1417 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1418 the effects of an earlier LOAD-SHARED-OBJECT call.
1419 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1420 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1421 provided. (reported by Cedric St-Jean)
1422 * bug fix: circularity handling in the reader did not treat raw
1423 structure slots correctly. (reported by Cedric St-Jean)
1424 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1425 file descriptors when there were none.
1426 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1427 was broken. (reporteed by Willem Broekema)
1428 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1429 pathnames without a directory.
1430 * bug fix: COMPILE-FILE did not warn about undefined variable
1431 references at toplevel, and LOAD of the resulting fasl did
1432 not signal an error.
1433 * bug fix: functions with non-required arguments used to end up with
1434 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1435 * bug fix: redefining a function with non-required arguments didn't
1436 update the system's knowledge about its call signature properly.
1437 * bug fix: fixed #431; incompatible alien record type redefinitions
1438 are detected and handled. (reported by Neil Haven)
1439 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1440 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1442 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1443 after alien stack frames.
1444 * bug fix: strings passed to mk{s,d}temp lacked null termination
1446 changes in sbcl-1.0.21 relative to 1.0.20:
1447 * new feature: the compiler is able to track the effective type of a
1448 generic function across method addition and removal.
1449 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1450 appropriately typed structure slots without locking.
1451 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1452 information like those gathered by TIME using a programming-friendly
1454 * new feature: TIME reports time taken even if the form performs a
1455 non-local transfer of control.
1456 * enhancement: reduced conservativism on GENCGC platforms: on
1457 average 45% less pages pinned (measured from SBCL self build).
1458 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1459 mutate constant symbols or violate declaimed type of the symbol.
1460 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1461 sleeping on the semaphore in heavily contested semaphores.
1462 * bug fix: semaphores and condition variables were not interrupt
1464 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1465 owned by other threads anymore.
1466 * bug fix: FIND on lists called KEY outside the specified
1467 subsequence. (reported by budden)
1468 * bug fix: LOG doesn't use single-float intermediate results when
1469 given mixed integer and double-float arguments, leading to better
1470 precision. (reported by Bob Felts)
1471 * bug fix: LOG with base zero returned values of inconsistent type.
1473 changes in sbcl-1.0.20 relative to 1.0.19:
1474 * minor incompatible change: OPTIMIZE qualities
1475 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1476 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1477 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1478 * documentation: some slot access efficiency guidelines have been
1479 added to the user manual.
1480 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1481 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1482 as ASSOC and MEMEBER.
1483 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1484 to more efficient EQ-comparison versions more often.
1485 * optimization: enhanced derivation of DOLIST iteration variable type
1487 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1489 * optimization: runtime lookup of function definitions can be
1490 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1491 * optimization: compiler is able to derive the return type of
1492 (AREF (THE STRING X) Y) as being CHARACTER.
1493 * optimization: CLRHASH on empty hash-tables no longer does pointless
1494 work. (thanks to Alec Berryman)
1495 * optimization: REPLACE deftransforms don't punt when :START1 or
1497 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1498 no longer emits a code deletion note. (reported by Andrew
1500 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1501 functions with an odd number of &OPTIONAL arguments, a &REST
1502 argument, and one or more &KEY arguments at the call site.
1503 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1504 arguments appeared at call sites as well.
1505 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1506 READ-LINE &co can no longer read from them afterwards. (reported
1508 * bug fix: fixed #427: unused local aliens no longer cause compiler
1509 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1511 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1512 alien-stack leakage. (reported by Andy Hefner)
1513 * bug fix: PROGV signals an error when an attempt to violate declared
1514 type of a variable or bind a constant is made.
1515 * bug fix: SET signals an error when an attempt to violate declared
1516 type of a variable is made.
1517 * bug fix: restart computation during the execution of a restart
1518 test function no longer causes infinite recursion. (reported by
1520 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1521 signals an error. (thanks to Pierre Mai)
1522 * bug fix: EXPORT left symbol unexported in conflict situations.
1523 (thanks to Michael Weber)
1524 * bug fix: correctly handle name conflicts involving CL:NIL.
1525 (thanks to Michael Weber)
1526 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1527 conflicts arising from USEing package with conflicting symbols
1528 correctly. (thanks to Michael Weber)
1530 changes in sbcl-1.0.19 relative to 1.0.18:
1531 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1532 warnings that go otherwise unhandled will be muffled if they are
1533 of the type that's the value of this variable.
1534 * optimization: stack allocation is slightly more efficient on x86
1536 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1537 where a raw slot always is initialized using the initform whose
1538 type is not know sufficiently well a compile-time are now compiled
1539 correctly. (reported by John Morrison)
1540 * bug fix: compiler no longer makes erronous assumptions in the
1541 presence of non-foldable SATISFIES types.
1542 * bug fix: stack analysis missed cleanups of dynamic-extent
1543 arguments in non-let-converted calls to local functions.
1544 * improvements to the Windows port:
1545 ** adjusted address spaces for building on both Win32 and
1546 Win64. (thanks for John Connors)
1547 * fixed some bugs revealed by Paul Dietz' test suite:
1548 ** interval arithmetic during type derivation used inexact integer
1549 to single-float coercions.
1550 ** arithmetic operations involving large integers and single
1551 floats give the same results in compiled and interpreted code.
1552 ** deriving the result type of COERCE no longer signals an error
1553 if the derived type of the second argument is a MEMBER type
1554 containing invalid type specifiers.
1555 ** ADJOIN with constant NIL as second argument works correctly.
1556 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1558 changes in sbcl-1.0.18 relative to 1.0.17:
1559 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1560 profiles only the current thread.
1561 * minor incompatible change: changes to SYMBOL-VALUE of constants
1562 defined with DEFCONSTANT now signal an error.
1563 * enhancement: SB-SPROF now has support for wallclock profiling,
1564 and is also able to profile specific threads. REPORT output
1565 has also additional sorting options.
1566 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1568 * optimization: structure allocation has been improved
1569 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1570 ** out of line constructors are ~10% faster.
1571 ** inline constructors are ~15% faster.
1572 ** inline constructors are capable of dynamic extent allocation
1573 (generally on x86 and x86-64, in some cases on other platforms
1575 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1577 * optimization: file compiler is now able to coalesce non-circular
1578 lists, non-base strings, and bit-vectors. Additionally, constants
1579 are never referenced through SYMBOL-VALUE at runtime.
1580 * optimization: code defining methods on PRINT-OBJECT (and other
1581 generic functions in the COMMON-LISP package) now loads faster.
1582 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1584 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1585 fasl is now deleted. (reported by Attila Lendvai)
1586 * bug fix: READ-LINE always returned NIL for the last line in files.
1587 (reported by Yoshinori Tahara)
1588 * bug fix: more accurate disassembly annotations of foreign function
1589 calls. (thanks to Andy Hefner)
1590 * bug fix: trimming non-simple strings and non-string string
1591 designators when the there is nothing to trim works properly.
1592 (thanks to James Knight)
1593 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1594 (thanks to Travis Cross)
1595 * fixed some bugs revealed by Paul Dietz' test suite:
1596 ** NIL is a valid function name (regression at 1.0.13.38)
1597 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1598 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1599 fill pointers properly (regression at 1.0.12.23)
1600 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1601 displacement indices properly (regression at 1.0.12.23)
1603 changes in sbcl-1.0.17 relative to 1.0.16:
1604 * temporary regression: user code can no longer allocate closure
1605 variable storage on stack, due to bug 419 without explicitly
1606 requesting it. Please consult sbcl-devel for advice if you need to
1607 use this feature in the meanwhile.
1608 * new feature: runtime argument --control-stack-size can be used to
1609 adjust thread default control stack size.
1610 * enhancement: improved TIME output
1611 ** all times are reported using the measured accuracy (milliseconds
1612 for real and GC times, microseconds for everything else.)
1613 ** processor cycle counts on x86 and x86-64.
1614 ** interpreted forms are counted for both evaluator modes.
1615 ** number of lambdas converted by the compiler is reported.
1616 ** CPU percentage report (computed from real and total run time.)
1617 ** more comprehensive run time reporting, using a condenced format
1618 ** interperted form, lambda, and page fault counts are omitted
1620 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1622 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1623 * optimization: two argument forms of LAST are upto ~10% faster
1624 in normal SPEED policies.
1625 * optimization: NCONC no longer needs to heap cons its &REST list
1626 in normal SPEED policies.
1627 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1628 to Sidney Markowitz)
1629 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1630 regression since 1.0.9.1. (thanks to Eric Marsden)
1631 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1632 since 1.0.15.36. (thanks to Paul Khuong)
1633 * bug fix: LAST when always returned the whole list when given a bignum
1634 as the second argument.
1635 * bug fix: dynamic extent allocation of nested lists and vectors
1636 could leak to otherwise accessible parts.
1637 * bug fix: invalid optimization of heap-allocated alien variable
1639 * bug fix: fasl header checking is less vulnerable to different
1640 platform word lengths.
1641 * bug fix: more correct assembler syntax for GNU binutils
1642 2.18.50.0.4 support. (thanks to Marijn Schouten)
1643 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1645 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1646 declarations) successfully. (reported by Attila Lendvai)
1648 changes in sbcl-1.0.16 relative to 1.0.15:
1649 * minor incompatible change: revert the changes to sb-posix's error
1650 signaling added in 1.0.14.
1651 * minor incompatible change: change PROBE-FILE back to returning
1652 NIL whenever we can't get a truename, as was the case before 1.0.14.
1653 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1654 inherits from ERROR instead of just CONDITION.
1655 * new feature: SB-INTROSPECT can provide source locations for instances
1656 as well. (thanks to Tobias Rittweiler)
1657 * optimization: binding special variables now generates smaller code
1658 on threaded platforms.
1659 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1660 and cases where no :TEST is given but the compiler can infer that
1661 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1662 * optimization: better LOGNOT on fixnums.
1663 * optimization: modular arithmetic for a particular requested width
1664 is implemented using a tagged representation unless a better
1665 representation is available.
1666 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1667 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1668 for wellformedness and returns a specialized vector. (reported by
1669 Francois-Rene Rideau)
1670 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1671 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1672 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1673 unscheduling timer at the same time as another timer fires.
1674 * bug fix: don't reschedule timers for dead threads.
1675 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1676 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1677 bogus errors if select() was interrupted.
1678 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1680 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1681 * enhancement: cleaner backtraces for interactive interrupts, as
1682 well as other cases where the interesting frames used to be
1683 obscured by interrupt handling frames.
1684 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1685 now supported, and tracing a whole package using (TRACE "FOO") now
1686 traces SETF-functions as well.
1687 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1688 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1689 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1690 * unreadably printed representation of hash-tables now includes
1692 * bug fix: partially fixed #188: type propagation from assignments
1693 is now more efficient.
1694 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1695 'DOUBLE-FLOAT) are not flushable.
1696 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1697 full address of the object, and none of the tag bits.
1698 * bug fix: readably printing hash-tables now respects other printer
1699 control variables. (reported by Cedric St-Jean)
1700 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1701 keyword with MAKE-HASH-TABLE.
1702 * bug fix: export SB-POSIX:MKSTEMP.
1703 * bug fix: SORT was not interrupt safe.
1704 * bug fix: XREF accounts for the last node of each basic-block as
1706 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1707 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1708 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1709 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1710 create obsolete instances in the case of redefinition or
1711 obsoletion of a superclass. (thanks to Andy Hefner)
1712 * bug fix: Support for the Alpha architecture has been revived; it had
1713 suffered somewhat from lack of maintenance since sbcl-1.0.
1714 * improvements to the Windows port:
1715 ** The system detects the codepage to use at startup, instead of
1716 using the value from the saved core. (thanks to Kei Suzuki)
1718 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1719 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1720 (see documentation for details.)
1721 * revived support for OpenBSD (contributed by Josh Elsasser)
1722 * partially fixed bug #108: ROOM no longer suffers from occasional
1723 (AVER (SAP= CURRENT END)) failures.
1724 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1725 bodies no longer cause a WARNING to be signalled. (reported by
1727 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1728 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1729 the bug in TRUNCATE.) (reported by Michael Weber)
1730 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1731 no samples. (reported by Andy Hefner)
1732 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1733 no longer appear as (NIL ...) frames in backtraces.
1734 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1735 is now actually exported from SB-EXT as documented. (reported by
1737 * bug fix: sb-aclrepl now correctly understands how to inspect
1738 single-floats on 64-bit platforms where single-floats are not boxed.
1739 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1740 yet been finalized. (reported by Levente Meszaros)
1741 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1742 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1743 SBCL-specific optimize qualities.
1745 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1746 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1747 an executable in the search path, and does so in the child
1748 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1749 been removed; it can be found in the CVS history, for somebody who
1750 needs that search behavior (see the manual).
1751 * minor incompatible change: compiler policy re. weakening type
1752 checks has changed: now type checks are weakened only if SAFETY < 2
1754 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1755 unparsing of directory pathnames as files. Analogously,
1756 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1757 filename to parse into a directory pathname.
1758 * enhancement: implicit generic function creation now signals a
1759 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1760 users can bind handlers for and muffle around calls to LOAD.
1761 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1762 to be used (using the default stream external format), and allows
1763 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1764 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1765 strings and vectors whose element-type or simplicity is not fully
1766 known at compile-time.
1767 * optimization: STRING-TRIM and related functions no longer allocate
1768 a new string when no trimming needs to be performed. These functions
1769 are also faster than before when the input string has been declared
1771 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1772 * optimization: READ-LINE is significantly faster for files containing
1774 * optimization: non-open coded uses of character comparison operators
1775 (e.g. char=) no longer cons when called with more than one parameter
1776 on platforms supporting dynamic-extent allocation.
1777 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1778 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1779 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1781 * bug fix: some sequence functions elided bounds checking when
1783 * bug fix: too liberal weakening of union-type checks when SPEED >
1785 * bug fix: more bogus fixnum declarations in ROOM implementation
1788 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1789 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1790 :SYNCHRONIZED argument, which makes the hash-table safe for
1791 concurrent accesses (but not iteration.) See also:
1792 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1793 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1794 * optimization: CONCATENATE on strings is an order of magnitude faster
1795 in code compiled with (> SPEED SPACE).
1796 * optimization: SUBSEQ is ~50% faster on lists.
1797 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1798 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1799 END is smaller then START.
1800 * bug fix: SB-PROFILE will no longer report extra consing for nested
1801 calls to profiled functions.
1802 * bug fix: ROOM implementation had bogus fixnum declarations which
1803 could cause type-errors when calling ROOM on large images.
1804 * bug fix: if file compilation is aborted, the partial fasl is now
1805 deleted, and COMPILE-FILE returns NIL as the primary value.
1806 * bug fix: number of thread safety issues relating to SBCL's internal
1807 hash-table usage have been fixed.
1808 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1809 be returned from its body when the values were being returned
1810 using unknown-values return convection and the W-P-O was wrapped
1811 inside an UNWIND-PROTECT.
1812 * bug fix: sb-posix should now compile again under Windows, enabling
1813 slime to work again.
1815 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1816 * incompatible change: hash-table accessor functions are no longer
1817 automatically protected by locks. Concurrent accesses on the same hash-table
1818 from multiple threads can give inconsistent results or even corrupt the
1819 hash-table completely. Multi-threaded applications should do their own
1820 locking at the correct granularity. In the current implementation it is
1821 still safe to have multiple readers access the same table, but it's not
1822 guaranteed that this property will be maintained in future releases.
1823 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1824 and will signal an error at runtime.
1825 * enhancement: SB-THREAD package now exports a semaphore interface.
1826 * enhancement: CONS can now stack-allocate on x86 and
1827 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1829 * enhancement: nested lists can now be stack allocated on
1830 platforms providing stack allocation support.
1831 * enhancement: dynamic-extent support has been extended to support
1832 cases where there are multiple possible sources for the stack
1834 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1835 if the mutex is uncontested on Linux.
1836 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1837 as specified by the CLHS. (thanks to Tobias Rittweiler)
1838 * bug fix: NaN comparison now works on x86-64.
1839 * bug fix: CLOSE :ABORT T on a stream with pending output now
1841 * bug fix: instances of non-standard metaclasses using standard
1842 instance structure protocol sometimes missed the slot type checks
1844 * bug fix: known functions can be inlined in high-debug code.
1846 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1847 * minor incompatible change: the MSI installer on Windows no longer
1848 associates .lisp and .fasl files with the installed SBCL.
1849 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1850 on Windows. (thanks to Luis Oliviera)
1851 * new feature: SB-CLTL2 contrib module now implements
1852 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1853 * optimization: scavenging weak pointers is now more efficient,
1854 requiring O(1) instead of O(N) per weak pointer to identify
1855 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1856 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1857 method bodies using constant slot-names when the first argument is
1858 a specializer parameter for the method.
1859 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1860 names, when the class of the instance is a direct instance
1861 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1862 as slow as the constant slot-name case.)
1863 * optimization: member type construction is now O(N) instead
1865 * optimization: UNION and NUNION are now O(N+M) for large
1866 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1868 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1869 now more readable in environments like Slime which display it.
1870 (thanks to Tobias C. Rittweiler)
1871 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1872 was able to infer the correct argument type for the object on which
1873 the CAS operation was being performed.
1874 * bug fix: copy propagation interfered with parallel assignment
1875 semantics in local calls. (reported by Paul Khuong)
1876 * bug fix: the signed modular fixnum shift compiled to wrong code on
1877 x86 and x86-64. (spotted by a slight modification to some of
1880 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1881 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1882 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1883 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1885 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1886 and generic function now print the object identity for anonymous
1887 instances. (thanks to Attila Lendvai)
1888 * enhancement: as an extension to MOP, SBCL now supports SETF of
1889 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1890 (thanks to Attila Lendvai)
1891 * enhancement: sb-cover has an alternate annotation mode which puts
1892 the form annotations at the car of the form, instead of annotating
1893 it completely. The benefit of this mode is that it shows better
1894 which forms were instrumented by the compiler.
1895 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1896 by printer control variables. (reported by Dan Corkill)
1897 * bug fix: system leaked memory when delayed output was performed by
1898 the OS in smaller chunks then expected. (thanks to David Smith)
1899 * bug fix: system leaked memory when file streams were not closed
1901 * bug fix: large objects written to slow streams that were modified
1902 after the write could end up with the modified state written to
1903 the underlying file descriptor.
1904 * bug fix: multiple threads operating in parallel on the same stream
1905 could cause buffer-overflows.
1906 * bug fix: source location information is stored correctly
1907 (broken since 1.0.6). This bug would generally show up as the
1908 Slime debugger highlighting the wrong form when the sldb-show-source
1910 * bug fix: Branch forms are again annotated as branches in the sb-cover
1912 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1913 on x86-64. (reported by Gregory Vanuxem)
1914 * bug fix: EQUALP could return wrong results for structures with raw
1915 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1916 word). (reported by Vjacheslav Fyodorov)
1917 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1920 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1921 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1922 atomic compare-and-swap operations on threaded platforms.
1923 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1924 allows assigning a global minimum value to optimization qualities
1925 (overriding proclamations and declarations).
1926 * enhancement: closed over variables can be stack-allocated on x86
1928 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1930 * optimization: slot definition lookup is now O(1). This speeds up
1931 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1932 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1933 * optimization: ASSOC and MEMBER can now be open-coded for all
1934 combinations of keyword arguments when second argument is constant
1935 and SPEED >= SPACE. In other cases a specialized version is
1937 * bug fix: using obsoleted structure instances with TYPEP and
1938 generic functions now signals a sensible error.
1939 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1940 (reported by Kristoffer Kvello)
1941 * bug fix: backtrace construction is now more careful when making
1942 lisp-objects from pointers on the stack, to avoid creating bogus
1943 objects that can be seen by the GC.
1944 * bug fix: defaulting of values in contexts expecting more than 7
1945 variables now works on x86-64. (reported by Christopher Laux)
1946 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1948 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1949 as the property-list of a symbol.
1950 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1951 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1952 situations requested, are once again file-compileable. (reported
1955 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1956 * MOP improvement: support for user-defined subclasses of
1957 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1958 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1959 the expansion of DEFMETHOD, is responsible for generating a form
1960 which creates a list of specializers when evaluated. Additional
1961 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1962 debugging and introspective support.
1963 * minor incompatible change: the (unsupported) spinlock interface
1964 has changed: free spinlock now has the value NIL, and a held spinlock
1965 has the owning thread as its value.
1966 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1967 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1969 * enhancement: name of a socket-stream is now "a socket" instead of
1970 "a constant string".
1971 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1972 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1973 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1974 for generic functions. (Thanks to Tobias C. Rittweiler)
1975 * optimization: bignum printing speed has been improved by 20-40%
1976 (depending on the bignum size.)
1977 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1979 * bug fix: the cache used by the CLOS to store precomputed effective
1980 methods, slot offsets, and constant return values is now thread and
1982 * bug fix: generic function dispatch function updating is now thread
1983 and interrupt safe (in the sense that the known issues have been
1985 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1986 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1987 * bug fix: asdf systems with dependencies to the SB-POSIX or
1988 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1989 * bug fix: interrupt safety of applicable method computation has been
1992 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1993 * new contrib: sb-cover, an experimental code coverage tool, is included
1994 as a contrib module.
1995 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1996 significantly faster.
1997 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1998 produce more efficient code on x86-64 if the compiler can determine
1999 that (+ INDEX <constant>) does not require a bounds check and FOO
2000 has an element type at least 8 bits wide.
2001 * enhancement: a new, experimental synchronous timeout facility is
2002 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2003 * enhancement: when a symbol name conflict error arises, the
2004 conflicting symbols are always printed with a package prefix.
2005 (thanks to Kevin Reid)
2006 * enhancement: stepping is now once again supported on the SPARC and
2007 MIPS platforms. (It is also now more likely to work on CheneyGC
2009 * enhancement: sb-sprof can now also track and report accurate call
2011 * bug fixes: the treatment of non-standard subclasses of
2012 SB-MOP:SPECIALIZER is more correct.
2013 * incompatible change: PURIFY no longer copies the data from the
2014 dynamic space into the static and read-only spaces on platforms
2015 that use the generational garbage collector
2016 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2018 * bug fix: GC race condition occasionally resulting in crashes with
2019 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2021 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2023 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2024 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2025 * bug fix: an asynchronous interrupt could previously leave the
2026 system running with GC inhibited.
2027 * bug fix: a DECLARE form evaluated at top-level now causes an error
2028 rather than silently (or verbosely) returning NIL.
2029 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2030 result in a error being signalled due to source form lookup errors.
2031 (reported by Peter Graves)
2033 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2034 * incompatible change: removed writer methods for host-ent-name,
2035 host-ent-addresses -- changing the values did not update the DNS
2037 * minor incompatible change: changed experimental JOIN-THREAD interface
2038 * documentation: the manual now lists reader and writer methods
2039 in class slot documentation sections. (thanks to Richard M Kreuter)
2040 * documentation: unwinding from asyncronous events has been
2041 documented as unsafe.
2042 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2043 in multithreaded application code.
2044 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2045 platforms. (thanks to James Anderson for the optimization hint)
2046 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2048 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2049 variants no longer cons.
2050 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2051 their NOT- variants no longer cons.
2052 * optimization: EQUAL hash tables no longer use SXHASH for objects
2053 of all data types, but instead use an EQL hash for types for which
2054 EQUAL is the same as EQL.
2055 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2056 are significantly faster.
2057 * optimization: new STRING-OUTPUT-STREAM implementation is much
2058 faster for large outputs and conses 30% less on average.
2059 * enhancement: XREF information is now collected for references made
2060 to global variables using SYMBOL-VALUE and a constant argument.
2061 * enhancement: SIGINT now causes a specific condition
2062 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2063 * bug fix: FILE-POSITION used to signal an error in some cases where
2064 ANSI requires it to return NIL.
2065 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2066 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2067 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2069 * bug fix: bad type declaration in the CLOS implementation has
2070 been fixed. (reported by James Anderson)
2071 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2072 (thanks to Lutz Euler)
2073 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2074 required by the CLHS. (reported by Samium Gromoff)
2075 * bug fix: dead unbound variable references now signal an error.
2076 (reported by Marco Monteiro)
2077 * bug fix: / with an unused value was being deleted in safe code.
2078 (thanks to Marco Monteiro and Kevin Reid)
2079 * bug fix: number of characters that can be written onto a single
2080 line in a file is unlimited.
2081 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2082 been fixed by inhibiting interrupts for when GC is disabled.
2083 * bug fix: some interrupt safety issues with GETHASH, (SETF
2084 GETHASH), CLRHASH and REMHASH have been fixed.
2085 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2086 specifier no longer causes infinite recursion.
2087 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2088 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2089 * bug fix: an &environment argument with the correct variable information
2090 is passed to macros that are expanded during byte compilation.
2091 (reported by Samium Gromoff)
2092 * bug fix: a logic error was causing the hash function for bignums to
2093 have excessive amounts of collisions. (reported by Faré Rideau)
2094 * bug fix: modifying the contents of an array could change the return
2095 value of SXHASH on that array, which is only allowed for strings
2096 and bit vectors. (bug introduced in 0.9.16)
2097 * improvement: the x86-64/darwin port now passes all tests (except
2098 for the debugger tests) but should still be considered
2099 experimental until this is fixed.
2100 * improvement: a style-warning is signaled for CASE (etc) clauses with
2101 duplicate keys. (thanks to Kevin Reid)
2102 * improvement: macos/x86 and macos/x86-64 now use mach exception
2103 handlers for dealing with illegal instructions (for trapping and
2104 error handling) and memory protection violations (for GC).
2106 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2107 * new platform: experimental support for x86-64/darwin (MacOS).
2108 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2109 and getnameinfo sockets functions are used instead of gethostbyaddr
2110 and gethostbyname, on platforms where the newer functions are available.
2111 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2113 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2114 don't print the startup banner, but behave as if --noinform was passed
2115 as a command line argument. (thanks to Kevin Reid)
2116 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2117 * optimization: code using alien values with undeclared types is much faster.
2118 * optimization: the compiler is now able to open code SEARCH in more cases.
2119 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2120 * bug fix: using standardized COMMON-LISP special variables as loop
2121 variables no longer signals bogus package lock violations. (reported
2123 * bug fix: declaring local loop variables to be of a range-limited type
2124 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2125 (reported by Andras Simon)
2126 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2127 bugs remain on x86-64.)
2128 * bug fix: the #= and ## reader macros now interact reasonably with
2129 funcallable instances.
2130 * bug fix: type-checks for function arguments were compiled using the
2131 compiler policy settings of the wrong lexical environment (in 1.0.2
2133 * bug fix: SHADOW accepts characters as string designators, as required
2134 by the spec (thanks to Eric Marsden)
2135 * bug fix: fixed GC safety issues when foreign functions are called with
2136 non-base strings as arguments
2137 * bug fix: more consistent error output for fatal-compiler-warnings, like
2139 * bug fix: functions with proper names were showing up as NIL in
2140 backtraces (reported by Edi Weitz, regression in 1.0.2)
2142 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2143 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2144 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2145 produce more efficient code on the x86 if the compiler can determine
2146 that (+ INDEX <constant>) does not require a bounds check and FOO
2147 has an element type at least 8 bits wide.
2148 * bug fix: references to undefined variables are handled the same way
2149 in toplevel forms as in the normal compiler
2150 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2152 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2153 (thanks to Jon Buller)
2154 * improvement: faster compilation times for complex functions
2155 * improvement: added readlink support to SB-POSIX (thanks to Richard
2158 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2159 * improvement: experimental support for mach exception handling on
2160 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2162 * improvement: support for GBK external format.
2163 (thanks to Chun Tian (binghe))
2164 * improvement: the debugger now displays variables that have been closed
2165 over, in code compiled with (DEBUG 2) or higher
2166 * improvement: support for executable cores on NetBSD (thanks to
2168 * new feature: added a RESTART-FRAME debugger command
2169 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2170 be used to provide an implementation for FILE-POSITION on Gray streams
2171 (thanks to Eric Marsden)
2172 * new feature: add syslog, openlog and closelog support to SB-POSIX
2173 (thanks to Richard Kreuter)
2174 * optimization: the function call overhead in code compiled with
2175 a high DEBUG optimization setting is significantly
2176 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2177 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2178 (thanks to Tony Martinez)
2179 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2180 evaluated once (reported by Kevin Reid)
2181 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2182 works again (thanks to Kilian Sprotte)
2183 * bug fix: an error is signaled for tagbodies with duplicate tags
2184 (thanks to Stephen Wilson)
2185 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2186 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2187 stack frames from alien callbacks.
2188 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2189 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2190 65k pages (thanks to David Woodhouse)
2191 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2193 changes in sbcl-1.0.1 relative to sbcl-1.0:
2194 * new platform: FreeBSD/x86-64, including support for threading.
2195 * new feature: the compiler stores cross-referencing information
2196 about function calls (who-calls), macroexpansion (who-macroexpands)
2197 and special variables (who-binds, who-sets, who-references) for code
2198 compiled with (< SPACE 3). This information is available through the
2199 sb-introspect contrib.
2200 * new feature: users may subclass SEQUENCE, and have instances of
2201 these classes interoperate with standard Common Lisp functions if
2202 a number of methods are defined. (This feature is experimental
2203 and the interface subject to change based on feedback from SBCL
2204 users and the general community)
2205 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2206 x86/x86-64, rather than the previous fixed depth of 8
2207 * improvement: another pthread back-end of mutex "pthread-futex".
2208 * bug fix: non-ascii command-line arguments are processed correctly
2209 (thanks to Yaroslav Kavenchuk)
2210 * bug fix: non-required arguments were not passed correctly when a method
2211 defined using DEFMETHOD was called from a mop-generated method using
2212 CALL-NEXT-METHOD (reported by Pascal Costanza)
2213 * bug fix: recursion is now permitted in accessors through
2214 SLOT-UNBOUND. (reported by Pascal Costanza)
2215 * bug fix: an error was signaled at startup if the HOME environment
2216 variable was defined, but had an empty value (reported by Peter Van Eynde)
2217 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2218 signal a PROGRAM-ERROR, not a BUG.
2219 * bug fix: SB-POSIX:READDIR works when built with large file support.
2220 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2222 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2223 for better automatic indentation support. (thanks to Matt Pillsbury)
2224 * optimization: loading generic functions no longer takes O(n^2) time,
2225 proportional to the amount of methods in the generic function
2226 (reported by Todd Sabin and Jeremy Brown)
2227 * optimization: the FIND and POSITION family of sequence functions
2228 are significantly faster on arrays whose element types have been
2230 * improvements to the Windows port:
2231 ** Intermittent heap corruption problems have been fixed. (thanks
2232 to Alastair Bridgewater)
2233 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2235 ** Lisp is able to unwind foreign exception frames from alien
2236 callbacks. (thanks to Alastair Bridgewater)
2238 changes in sbcl-1.0 relative to sbcl-0.9.18:
2239 * improvement: experimental support for threading on FreeBSD/x86.
2240 (thanks to NIIMI Satoshi)
2241 * improvement: runtime option --dynamic-space-size can be used
2242 to set the size of the dynamic space reserved on startup.
2243 * improvement: floating point modes in effect are now saved in
2244 core, and restored on startup.
2245 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2246 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2247 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2248 threads are not running after *SAVE-HOOKS* have run.
2249 * improvement: writes to CLOS instance slots are type-checked in code
2250 compiled with (SAFETY 3)
2251 * improvement: floating-point exception handling on FreeBSD (thanks to
2253 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2254 (thanks to Zach Beane)
2255 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2257 * improvement: added support for the Shift-JIS external format.
2258 (contributed by NIIMI Satoshi)
2259 * improvement: callbacks are supported on Linux/PPC. (thanks to
2261 * bug fix: compiler bug triggered by a (non-standard) VALUES
2262 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2263 * bug fix: file compiler no longer confuses validated and already
2264 dumped structurres. (reported by Kaersten Poeck)
2265 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2266 fill-pointer signals a type-error as required. (thanks to
2268 * bug fix: disassemly of funcallable instances works.
2269 * bug fix: single stepping on PPC.
2270 * bug fix: fix thread-safety problems in the type system (generally
2271 manifesting as nonsensical errors like "STRING is a bad type specifier
2272 for sequences" or "The value 1 is not of type FIXNUM")
2273 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2274 (reported by Josip Gracin)
2275 * bug fix: an error is signaled for attempts to displace arrays with
2276 incompatible element types (thanks to Mario Mommer)
2277 * bug fix: more correct handling of wide characters in debug info
2278 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2279 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2280 and don't cause extra consing
2281 * optimization: MAP and MAP-INTO are significantly faster on vectors
2282 whose elements types have been declared.
2283 * Improvements to SB-SPROF:
2284 ** Support for allocation profiling
2285 ** Reduced profiling overhead, especially for long profiling runs
2286 * Improvements to the Windows port:
2287 ** floating point exceptions are now reported correctly.
2288 ** stack exhaustion detection works partially.
2289 ** more accurate GET-INTERNAL-REAL-TIME.
2290 ** better RUN-PROGRAM behaviour in case of errors in the child
2292 ** PROBE-FILE now simplifies pathnames correctly.
2293 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2294 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2295 1st 1970 (although time timezone data will be unreliable).
2296 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2298 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2299 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2300 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2302 * bug fix: two potential GC deadlocks affecting threaded builds.
2303 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2304 returns T (reported by Anton Kazennikov)
2305 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2306 with non-variable places
2307 * bug fix: remove a race condition in the setting of
2308 funcallable-instance functions, this should make threaded CLOS
2309 code more stable against memory faults.
2310 * bug fix: corruption of specials when unbinding is interrupted by an
2311 asynchronous unwind (reported by Hannu Koivisto)
2312 * improvement: the debugger will now also display local variables that
2313 are only used once, for code compiled with a DEBUG optimization quality
2316 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2317 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2318 * incompatible change: External-format support for FFI calls. The
2319 SB-ALIEN:C-STRING no longer implies an ASCII
2320 external-format. Instead the string is subject to external-format
2321 conversion. Additionally return values of type SB-ALIEN:C-STRING
2322 are by default of type (SIMPLE-ARRAY CHARACTER), not
2323 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2324 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2325 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2326 * incompatible change: SB-EXT package no longer contains the
2327 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2328 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2330 * incompatible change: the single-stepper is no longer available
2331 on Alpha, Mips and Sparc platforms.
2332 * minor incompatible change: the direct superclasses of
2333 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2334 not (STANDARD-OBJECT FUNCTION). This makes the
2335 class-precedence-lists of GENERIC-FUNCTION and
2336 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2338 * minor incompatible change: the default stream external format on
2339 non-unicode SBCL is no longer detected from the locale, but is always
2341 * new feature: Add a version of evaluator that uses an interpreter instead
2342 of the compiler. EVAL still uses the compiler by default, to switch it
2343 to use the interpreter, set the value of the variable
2344 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2345 * minor incompatible change: the single-stepper REPL has been merged
2346 with the normal debugger (see the "Stepping" heading of the debugger help
2347 for more details). The debugger command STEP will no longer switch
2348 to the single-stepper REPL.
2349 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2350 for a type now works.
2351 * bug fix: loading of default sysinit file works. (thanks to Leonid
2353 * bug fix: better detection of circularities in the file-compiler.
2354 (reported by Marco Monteiro)
2355 * bug fix: the CL pathname functions now work with files that have
2356 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2357 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2358 systems with Unix98 pty semantics.
2359 * bug fix: ASDF-INSTALL will now work with bsd tar.
2360 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2362 * bug fix: timers expiring in dead threads no longer cause a
2363 type-error (reported by Paul "Nonny Mouse").
2364 * bug fix: thanks to more lightweight single-stepper instrumentation,
2365 code compiled with (DEBUG 3) will compile and execute significantly faster,
2366 and will have more accurate type-inferencing than before
2367 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2368 whose bindings are modified
2369 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2370 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2371 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2372 CL:SOFTWARE-VERSION with proper version
2374 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2375 * feature: implemented the READER-METHOD-CLASS and
2376 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2377 as specified by AMOP.
2378 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2380 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2381 (thanks to Lutz Euler)
2382 * optimization: hashing of general arrays and vectors has been
2383 improved. (reported by Any Fingerhut)
2384 * enhancement: SB-INTROSPECT is now able to find definitions of
2385 profiled functions. (thanks to Troels Henriksen)
2386 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2387 as well, allowing compiler-macros for SETF-functions to expand.
2388 * enhancement: step-instrumentation no longer wraps known
2389 single-value functions with multiple-value context, allowing
2390 better type inference.
2391 * fixed bug #337: use of MAKE-METHOD in method combination now works
2392 even in the presence of user-defined method classes. (reported by
2393 Bruno Haible and Pascal Costanza)
2394 * fixed bug #339(c): if there are applicable methods not part of any
2395 long-form method-combination group, call INVALID-METHOD-ERROR.
2396 (reported by Bruno Haible)
2397 * fixed bug #361: the :FUNCTION initarg in the protocol for
2398 initialization of methods can now be used to override
2399 internally-produced optimized functions. (reported by Bruno
2401 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2402 system-provided lambda expression no longer cause warnings about
2403 unbound #:|pv-table| symbols.
2404 * bug fix: improved the handling of type declarations and the
2405 detection of violations for keyword arguments with non-constant
2407 * bug fix: potentially erronous calls to PATHNAME and
2408 MERGE-PATHNAMES were being flushed in some cases.
2409 (reported by Richard Kreuter)
2410 * bug fix: compiled calls to TYPEP were mishandling obsolete
2411 instances. (reported by James Bielman and Attila Lendvai)
2412 * bug fix: format strings with ~> without matching ~< no longer
2413 trigger an AVER, but signal an understandable error instead.
2414 (reported by Antonio Martinez)
2415 * bug fix: specifying an output-file without a pathname-type for
2416 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2417 of input-file instead of "fasl". (reported by Robert Dodier)
2418 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2419 (reported by James Y Knight).
2420 * bug fix: compiler-macros-function did not consider the environment
2421 argument for shadowing by local functions.
2422 * bug fix: compiler-macros expansion was inhibited by local INLINE
2424 * bug fix: inline expansions of known functions were subject to
2425 step-instrumentation in high debug policies, leading to problems
2426 with type-inference.
2427 * bug fix: compiler failed to differentiate between different CONS
2428 types in some cases.
2429 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2430 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2431 * bug fix: #368: incorrect use of expressed vs. upgraded array
2433 * bug fix: #306a: more precise unions of array types.
2434 * thread-safety improvements:
2435 ** CONDITION-WAIT could return early on Linux, if the thread was
2436 interrupted and subsequently continued with SIGCONT.
2437 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2439 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2440 * added support for the ucs-2 external format. (contributed by Ivan
2442 * minor incompatible change: pretty printing of objects of type
2443 (cons symbol) is, in the default pprint-dispatch-table, now
2444 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2446 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2447 called later in a class's lifetime, possibly as late as when the
2448 first instance of the class is created. Previously,
2449 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2450 class became finalizeable.
2451 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2452 for multibyte external-format streams. (thanks to "vbzoli")
2453 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2454 with :ALLOCATION :CLASS inherited from superclasses of the
2456 * fixed bug: anonymous classes can now be created using the :NAME
2457 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2458 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2459 * fixed bug: core-files saved with :EXECUTABLE T can again be
2460 executed when SBCL_HOME isn't set. (reported by James Knight)
2461 * fixed bug: toplevel LOCALLY forms with declarations could
2462 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2463 * fixed bug: printing from several different threads using different
2464 values of *print-case* could cause invalid output, due to
2465 some internal special variables of the printer not being bound
2466 thread-locally (reported by Max Mikhanosha)
2467 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2468 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2469 (reported by Pascal Costanza)
2470 * fixed bug: FINALIZE-INHERITANCE is called from
2471 REINITIALIZE-INSTANCE on classes when the class has previously
2472 been finalized, as required by AMOP.
2473 * minor code generation optimizations:
2474 ** better register allocation in CLOS dispatching functions
2475 ** overflow detection when coercing signed bytes to fixnums on x86-64
2476 ** is now implemented with one IMUL instruction instead of three shifts
2477 ** more efficient bit-vector access on x86 and x86-64
2478 ** more efficient access to raw structure slots on x86 and x86-64
2479 * fixed some bugs revealed by Paul Dietz' test suite:
2480 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2481 return its argument.
2483 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2484 * feature: thread support on Solaris/x86, and experimental thread support
2486 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2488 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2489 default method for SLOT-UNBOUND.
2490 * minor incompatible change: prevent the user from specializing the
2491 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2492 somewhat counter to the intent of the protocol, I (CSR) think, and
2493 additionally it just doesn't work in SBCL as currently
2494 implemented, thanks to optimizations (that are always valid for
2495 the other three SLOT-VALUEish functions, but not for the setter).
2496 * minor incompatible change: the :SB-LDB feature is now enabled by
2497 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2498 the low-level debugger.
2499 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2500 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2501 down to an SB-SYS:FD-STREAM, allowing direct communication in
2502 more cases. Temporary files and pipes are still used as a fallback
2504 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2505 on the non-reentrant C functions localtime(3) and gmtime(3).
2506 * bug fix: global optimization policy was not visible in LOCALLY and
2508 * bug fix: class objects can be used as specializers in methods.
2509 (reported by Pascal Costanza)
2510 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2511 with a type error. (reported by blitz_ on #lisp)
2512 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2513 failed with a type error. (reported by Pascal Bourguignon)
2514 * bug fix: merging pathnames against defaults with :DIRECTORY
2515 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2516 (reported by James Y Knight)
2517 * bug fix: saving large (>2GB) cores on x86-64 now works
2518 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2519 constant index and a (simple-array (signed-byte 32)) array
2520 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2521 error (patch by Robert J. Macomber)
2522 * feature: TIME now displays the amount of run-time spent in GC
2523 * bug fix: The debugger now does a better job of respecting
2524 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2525 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2526 workaround for bug 403.)
2527 * bug fix: floating point exception handling now works on FreeBSD
2528 (thanks to NIIMI Satoshi)
2529 * fixed some bugs revealed by Paul Dietz' test suite:
2530 ** MISC.641: LET-conversion were not supposed to work in late
2532 * improvements to the Win32/x86 port:
2533 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2534 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2536 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2537 * new feature: source path information is generated for macro-expansion
2538 errors for use in IDE's like Slime (thanks to Helmut Eller)
2539 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2540 * bug fix: compiler does not loop forever on an invalid type in
2542 * improvement: compilation of most CLOS applications is significantly
2544 * optimization: added a limited bytecode compiler for simple toplevel
2545 forms, speeding up compilation and FASL loading
2546 * bug fix: the statistical profiler now properly distinguishes anonymous
2549 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2550 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2551 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2552 into subclasses of the finalized class. Now user calls to
2553 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2554 system return before any subclasses are finalized.
2555 * minor incompatible change: The reader no longer ignores errors
2556 regarding non-existent packages in #+ and #- feature tests.
2557 * new feature: command line options --no-sysinit, --no-userinit to
2558 inhibit loading the corresponding init files
2559 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2560 for sending data through UDP sockets (thanks to François-René Rideau)
2561 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2562 error is signalled instead (thanks to François-René Rideau)
2563 * minor incompatible change: Error signalling behaviour of lexical
2564 operations violating package locks has changed slightly. Refer to
2565 documentation on package locks for details.
2566 * enhancement: EVAL can process IF-expressions without resorting to the
2568 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2569 constant-folded properly due to missing out-of-line functions.
2570 (reported by Mika Pihlajamäki)
2571 * bug fix: LISTEN sometimes returned T even in cases where no data was
2572 immediately available from the stream
2573 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2574 were reversed. (reported by Levente Mészáros)
2575 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2576 when given a vector displaced to an adjustable array. (reported
2578 * bug fix: derivation of float boundaries from numbers outside the
2579 appropriate float range (reported by John Wiseman)
2580 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2582 * bug fix: precomputing cache entries for generic functions with
2583 some subclasses of specializers as yet invalid does not attempt to
2584 fill a cache line with a negative offset. (reported by Levente
2586 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2587 allow condition class objects as arguments to DOCUMENTATION and
2588 (SETF DOCUMENTATION); only find and set documentation for
2589 structure names for the STRUCTURE doc-type. (suggested by Gary
2591 * improvements to the Win32/x86 port:
2592 ** (user-homedir-pathname) and default initialization file
2593 locations now know about the user's "Documents and Settings"
2594 directory (thanks to Yaroslav Kavenchuk)
2595 ** run-program is implemented (thanks to Mike Thomas)
2596 ** sockets support (thanks to Timothy Ritchey)
2597 ** better backtrace support (thanks to Alastair Bridgewater)
2598 ** sb-grovel supported
2599 ** asdf-install and sb-posix work somewhat
2600 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2601 * improvements to the Solaris/x86 port:
2602 ** works on Solaris 11/Solaris Express
2603 ** floating-point exception handling support
2604 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2605 * fixed some bugs revealed by Paul Dietz' test suite:
2606 ** REMOVE-METHOD returns its generic function argument even when
2607 the method is not one of the generic functions' methods.
2608 ** objects declared as MEMBER types can be admissible arguments to
2609 structure accessors.
2610 ** printing characters should simply be printed by the FORMAT ~:C
2612 ** compiler failure when compiling functions with hairy constant
2613 defaults for optional parameters.
2614 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2615 function, which is already optimized.
2617 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2618 * new platform: experimental support for SBCL x86/Darwin, including
2619 MacOS X 10.4.5 on Intel.
2620 * new feature: Unicode character names are now known to the system
2621 (through CHAR-NAME and NAME-CHAR).
2622 * new feature: the filesystem location of SBCL's core file is
2623 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2624 * minor incompatible change: the contrib modules SB-POSIX and
2625 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2626 this change is to make it easier to distribute
2627 location-independent binaries.
2628 * bug fix: as implied by AMOP, standardized classes no longer have
2629 slots named by external symbols of public packages. (reported by
2631 * optimization: calling functions via constant symbols -- as in
2632 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2633 via the function object as in (FUNCALL #'FOO).
2634 * optimization: on x86 and x86-64, the calling convention for the
2635 case of dealing with an unknown number of values has been altered
2636 to be friendlier to the prediction heuristics implemented,
2637 particularly with reference to CALL and RET pairing. (thanks to
2638 Alastair Bridgewater)
2639 * optimization: on x86, the code for access to thread-local symbol
2640 values and binding/unbinding of thread-local symbols is smaller.
2641 (thanks to Alastair Bridgewater)
2642 * enhancement: CONSTANTP is now able to determine constantness of
2643 more complex forms, including calls to constant-foldable standardized
2644 functions and some special forms beyond QUOTE.
2645 * fixed bug: occasional GC crashes on Solaris/x86
2646 * optimization: x86-64 supports stack allocation of results of simple
2647 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2648 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2649 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2650 (thanks to James Knight)
2651 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2652 by the standard (thanks to Stephen Compall)
2654 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2655 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2656 be used for bundling the runtime and the core file into one
2657 executable binary. This feature is not currently supported on all SBCL
2658 platforms. (thanks to James Bielman and NIIMI Satoshi)
2659 * new feature: a generational or ephemeral garbage collector is now
2660 the default on the PowerPC platform (both Linux and Darwin). The
2661 old Cheney (stop and copy) collector is a build-time option.
2662 (thanks to Cyrus Harmon, after Raymond Toy)
2663 * minor incompatible change: the method by which SBCL finds its
2664 contributed modules has changed; it no longer relies on symbolic
2665 links from an $SBCL_HOME/systems directory, but searches directly
2666 in the subdirectories of $SBCL_HOME.
2667 * enhancement: the dynamic heap size on the Linux/PPC platform is
2668 markedly larger, even using the older Cheney garbage collector.
2669 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2670 certain complicated string types. (reported by Gary King)
2671 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2672 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2673 * fixed bug: DOCUMENTATION on structures no longer signals an
2674 error if no structure type of the right name exists. (reported by
2676 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2677 applicable non-standard primary or :AROUND method on
2678 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2679 no longer cause unbound variable errors. (reported by Kevin Reid)
2680 * fixed bug: metacircle resolution in cases where methods have slots
2681 added before the slots from STANDARD-METHOD. (reported by Jean
2683 * fixed bug: the Power PC assembly code for calling into lisp
2684 sometimes computed its return address wrongly (depending on the
2685 15th bit of the address, fixed at link time). This used to
2686 manifest itself in a segmentation violation while building PCL.
2687 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2688 many others over the years)
2689 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2690 the stack pointer (treated as a signed integer) is negative.
2691 (thanks to Peter van Eynde)
2693 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2694 * new platform: experimental support for the Windows operating
2695 system has been added. (thanks to Alastair Bridgewater)
2696 * fixed several bugs in and robustified the PPC FFI (including
2697 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2698 * bug fix: allow non-simple string symbol names (reported by Paul
2700 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2702 * bug fix: saving a core corrupted callbacks on x86/x86-64
2703 * bug fix: closed a loophole in metacircularity detection and
2704 grounding in the PCL implementation of CLOS.
2705 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2706 (reported by tomppa on #lisp)
2707 * bug fix: clear the direction flag on Lisp -> C transitions, as
2708 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2709 (reported by Andrej Grozin and Hendrik Maryns)
2710 * optimization: major improvements to GC efficiency on GENCGC platforms
2711 * optimization: faster implementation of EQUAL
2712 * optimization: emit more efficient opcodes for some common
2713 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2714 * optimization: several other minor code-generation improvements on x86-64
2715 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2717 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2718 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2719 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2720 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2721 by ANSI as a generic function, and for consistency (SETF
2722 GENERIC-FUNCTION-NAME) is treated likewise.
2723 * fixed bug #233.b: make constraint propagation notice when a variable
2724 value is changed after it is referenced but before it is used
2725 * fixed bug #296: no more arbitrary behaviour from filenames with
2726 odd characters as --load arguments. (reported by Adam Warner)
2727 * fixed bug #390: :CHARACTER-SET pathname components now work as
2728 expected. (reported by Tim Daly Jr)
2729 * fixed bug #391: complicated :TYPE intersections in slot
2730 definitions no longer cause an error in PCL internals.
2731 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2732 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2733 returning the number of octets which would be written to the
2734 file-stream. (thanks to Robert J. Macomber)
2735 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2736 arguments to the internal stream functions. (thanks to David
2738 * bug fix: stack exhaustion is now handled on the x86/SunOS
2739 platform. (thanks to Daisuke Homma)
2740 * bug fix: more accurate ROOM results on GENCGC platforms
2741 * optimization: improved type inference for arithmetic-for
2742 index variables in LOOP
2743 * optimization: faster floating-point SQRT on x86-64
2744 * fixed some bugs revealed by Paul Dietz' test suite:
2745 ** DOCUMENTATION returns NIL instead of "" for method combinations
2746 that don't have a docstring
2748 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2749 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2750 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2751 therefore are not customizeable by user code (as seems to be at
2752 least permitted and maybe required by AMOP). As a consolation,
2753 however, the SBCL implementation of these functions now calls
2754 REINITIALIZE-INSTANCE as specified by AMOP.
2755 * bug fix: slot-definition documentation is propagated as per ANSI
2756 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2757 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2758 argument, as do eslotd initialization methods. (from Pascal
2759 Costanza's "Closer" project)
2760 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2761 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2763 * bug fix: it is now possible to have more than one subclass of
2764 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2765 (reported by Bruno Haible, Pascal Costanza and others)
2766 * bug fix: the dependent update protocol now works for generic
2767 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2768 and Pascal Costanza)
2769 * bug fix: condition-class instances corresponding to
2770 DEFINE-CONDITION forms are now created eagerly. (reported by
2771 Kalle Olavi Niemitalo on comp.lang.lisp)
2772 * bug fix: floating point printing is more accurate in some
2773 circumstances. (thanks to Simon Alexander)
2774 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2775 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2776 * bug fix: callbacks on OS X now preserve stack-alignment.
2777 (thanks to Cyrus Harmon)
2778 * enhancement: the x86-64 disassembler is much better at
2779 disassembling SSE instructions. (thanks to Lutz Euler)
2780 * enhancement: CHECK-TYPE on a variable now allows type-inference
2781 (thanks to Vincent Arkesteijn)
2782 * optimization: improved performance of EUC-JP external format.
2783 (thanks to NIIMI Satoshi)
2784 * optimization: performance improvements to IO on file streams of
2785 :ELEMENT-TYPE CHARACTER
2786 * optimization: much faster memory allocation on x86-64
2787 * optimization: faster garbage collections (latency and throughput)
2789 * optimization: faster bignum subtraction and division on x86 and x86-64
2790 (thanks to Lutz Euler)
2791 * optimization: more accurate type-inference for loops that use a
2792 floating point index variable or a negative step.
2794 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2795 * bug fix: add a workaround to SBCL looping infinitely at startup on
2796 Linux kernels with apparently buggy implementations of personality().
2797 (thanks to Svein Ove Aas)
2798 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2799 (thanks to David Lichteblau)
2800 * bug fix: local bindings shadow global symbol macros for
2801 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2802 * optimization: non-open coded uses of numeric comparison operators
2803 (e.g. >) no longer cons when called with more than one parameter
2804 on platforms supporting dynamic-extent allocation.
2805 * enhancement: saving cores with foreign code loaded is now supported
2806 on MIPS/Linux in addition to the previously supported platforms.
2807 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2808 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2809 * bug fix: division by zero in sb-sprof when no samples were collected
2810 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2811 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2812 (thanks to Alexander Kjeldaas)
2813 * new feature: ignoring the return values of destructive functions
2814 like NREVERSE signals a compile-time style-warning.
2815 (thanks to Kevin Reid)
2816 * new feature: the alignment of alien structure fields can be
2817 explicitly specified. (thanks to Cyrus Harmon)
2818 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2819 and dump core on SIGQUIT
2821 ** incompatible change: threads do not inherit values of specials
2822 from their parents (see manual)
2823 ** bug fix: threads stacks belonging to dead threads are freed by the
2824 next exiting thread, no need to gc to collect thread stacks anymore
2825 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2826 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2827 ** bug fix: dynamic variable and thread start related gc lossage
2828 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2830 * fixed some bugs revealed by Paul Dietz' test suite:
2831 ** SUBTYPEP is slightly more accurate on heinously complicated
2832 CONS types where some of the members have uncertain (in the
2833 NIL, NIL sense) type relationships to each other.
2835 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2836 no longer purified unless :PURIFY T is explicitly specified.
2837 ** Non-purified cores are significantly smaller than before
2839 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2840 * new feature: timers based on Zach Beane's excellent timer package
2841 * added support for the following external formats: koi8-u,
2842 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2843 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2844 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2845 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2846 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2847 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2848 * incompatible change: a threaded SBCL will no longer revert to
2849 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2850 * bug fix: interrupts are disabled until startup is complete; no
2851 more sigsegvs when receiving a signal to soon
2852 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2854 * bug fix: add a workaround for the memory randomization features in
2855 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2856 workaround will only be in effect on systems with the proc filesystem
2858 * bug fix: printing objects of type HASH-TABLE signals a
2859 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2861 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2862 have been running for over 50 days. (reported by Gilbert Baumann)
2863 * bug fix: the logic for getting names of functions gets less
2864 confused when confronded with alternate-metaclass
2865 funcallable-instances. (reported by Cyrus Harmon)
2866 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2867 consistent, even on internal alternate-metaclass objects.
2868 * bug fix: flush closure information collected by physical
2869 environment analysis prepass before the main pass. (bug reported
2871 * bug fix: compiler pack phase does not modify a hashtable, which is
2872 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2873 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2874 may be expanded. (reported by Alexander <malishev> on c.l.l)
2875 * bug fix: no more style-warnings when compiling code using LAST
2876 under high-SPEED low-SPACE settings. (reported by David Wallin
2878 * fixed some incompatibilities between SBCL's MOP and the MOP
2880 ** the METAOBJECT class is now implemented;
2881 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2882 STANDARD-OBJECT, as required;
2883 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2884 now compatible (as required by VALIDATE-SUPERCLASS); there
2885 remains a consistency requirement over the presence or absence
2886 of the FUNCTION class in the superclass list of finalized
2887 classes; see the manual for more details;
2888 ** the :AROUND method for COMPUTE-SLOTS on
2889 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2890 requested slot ordering.
2892 ** bug fix: parent thread now can be gc'ed even with a live
2894 ** bug fix: binding a special with PROGV to no value is not
2895 the same as that symbol not having been bound (thanks to
2897 ** bug fix: binding specials is thread safe (thanks to
2899 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2900 and SB-SPROF do not die with 'no handler for signal XX in
2901 interrupt_handle_now(..)' anymore
2902 ** bug fix: WITH-TIMEOUT works with multiple running threads
2903 * fixed some bugs revealed by Paul Dietz' test suite:
2904 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2905 the :method-class keyword argument.
2907 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2908 * new port: the Solaris operating system on x86 processors is now
2909 mostly supported, though some rough edges in the environment
2910 remain. (thanks to Daisuke Homma)
2911 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2912 space for its heap. (thanks to Thiemo Seufer)
2913 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2914 closures. (thanks to Thiemo Seufer)
2915 * minor incompatible change: eof selects abort in the debugger.
2916 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2917 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2919 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2920 deprecated, and will go away in a future revision of SBCL.
2921 * minor incompatible change: GC-ON and GC-OFF are no longer
2922 implemented with a counter, it does not matter how many times gc
2923 is switched on or off
2924 * bug fix: discriminating functions for generic function classes
2925 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2926 make invalid assumptions about method precedence order. (reported
2928 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2929 platforms. (thanks to Thiemo Seufer)
2930 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2931 * bug fix: correct pathname printing with printer escaping is on.
2932 (thanks to Kevin Reid)
2933 * bug fix: complex VOP definitions in "user-space" no longer trigger
2934 package locks. (reported by Zach Beane)
2935 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2936 for funcallable-instance functions, and is no different from
2938 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2939 characters in the current readtable. (reported by Nicholas Neuss)
2940 * bug fix: SUBTYPEP on various CONS types returns more a more
2941 accurate acknowledgment of its certainty.
2942 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2943 lists in some cases. This partially fixes bug 384.
2944 * flush all standard streams before prompting in the REPL and the
2946 * bug fix: signal handling and triggering gc do not conflict
2947 directly anymore, in particular a high frequency sb-sprof does
2948 not prevent gc from running
2949 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2950 approximation for timezone and DST information between the
2951 universal time epoch and the smallest negative 32-bit time_t.
2952 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2953 year 1899 so long as the encoded time is non-negative.
2954 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2955 the correct answer for non-constant rotate amounts when performing
2956 an inline 32-bit rotation.
2958 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2959 there is only one thread in the session
2960 ** bug fix: memory leak for streams created in one thread and
2961 written to in another
2962 ** bug fix: lockup when compiled with gcc4
2963 ** bug fix: race that allows the gc to be triggered when gc is
2965 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2966 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2968 ** bug fix: finished threads are gc'ed properly
2969 * fixed some bugs revealed by Paul Dietz' test suite:
2970 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2971 has arguments with a different set of applicable methods from
2972 the orignal arguments.
2973 ** The type error thrown by MAP now has a correct expected-type
2975 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2976 name a compiled function.
2977 ** Three MISC tests where a large bignum was improperly coerced to
2978 a float that couldn't represent that bignum during type
2979 derivation were fixed.
2980 ** SUBTYPEP can now handle types involving the negation of a
2981 list-form FUNCTION type.
2982 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2983 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2984 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2986 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2987 * New feature: Experimental support for bivalent streams: streams
2988 opened with :element-type :default now allow character and binary
2989 (unsigned-byte 8) I/O
2990 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2991 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2993 * bug fix: no more highly sporadic "couldn't check whether ~S is
2994 readable" when reading a stream and an interrupt hits in the middle
2995 of a select system call
2996 * compiler better recognizes complex arrays (reported by Eduardo
2998 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2999 for variables on SBCL built with linkage-tables. (reported by Luis
3001 * various error reporting improvements.
3002 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3003 (Thanks to Thiemo Seufer)
3004 * bug fix: nested reader invokations work correctly
3005 * bug fix: it is possible to have simultaneous references to foreign
3006 code and foreign data with the same name.
3008 ** added x86-64 support
3009 ** incompatible change: the threading api now works with thread
3010 objects instead of thread ids
3011 ** bug fix: threads are protected from signals and interruption when
3012 starting up or going down
3013 ** bug fix: a race where an exiting thread could lose its stack to gc
3014 ** bug fix: don't halt on infinite error in threads if possible
3015 ** fixed numerous gc deadlocks introduced in the pthread merge
3016 ** bug fix: fixed thread safety issues in read and print
3017 ** bug fix: debugger doesn't hang on session lock if interrupted at
3018 an inappropriate moment
3019 ** bug fix: run-program is now thread safe(r)
3020 ** bug fix: inner with-recursive-lock no longer releases the mutex
3021 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3022 * fixed some bugs revealed by Paul Dietz' test suite:
3023 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3024 EXPECTED-TYPE slots filled.
3025 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3027 ** MAKE-CONDITION accepts classes as type-designators.
3028 ** COMPILE may never return NIL.
3029 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3030 range before calling Unix time functions
3032 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3033 * numerous signal handling fixes to increase stability
3034 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3035 * minor incompatible change: we now correctly canonize default
3036 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3037 as per the MOP, rather than the historical (INITARG INITFUNCTION
3038 INITFORM). (reported by Bruno Haible)
3039 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3040 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3041 for more information.
3042 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3043 pathname is a directory pathname.
3044 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3045 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3047 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3048 :METACLASS argument in addition to a class name. (reported by
3049 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3050 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3051 (reported by Bruno Haible; patch from Gerd Moellmann)
3052 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3054 * bug fix: more cleanups to the floating point exception handling on
3055 x86-64 (thanks to James Knight)
3056 * bug fix: the compiler does not try to constant fold calls of
3057 COERCE and BIT-* functions when they return freshly constructed
3058 objects. (reported by Nikodemus Siivola and Paul Dietz)
3059 * optimization: improved the MIPS versions of generic (in the
3060 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3061 * optimization: direct conversion of (unsigned-byte 32) to floats on
3062 the PowerPC platform.
3063 * optimization: structure instances with raw slots now use less
3064 memory, and probably show better memory locality. (thanks to
3066 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3067 are treated as requests for stack allocation on the x86-64,
3068 Alpha-32, PPC and SPARC platforms.
3069 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3070 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3071 (thanks to Tony Martinez)
3073 ** gcing a dead thread can no longer lead to lockups
3074 ** threads block signals until they are set up properly
3075 ** errno is no longer shared by threads
3076 ** interrupt-thread restores the eflags register on x86
3077 ** fixed some lockups due to gc/thread interaction
3078 * fixed some bugs revealed by Paul Dietz' test suite:
3079 ** invalid dotted lists no longer raise a read error when
3080 *READ-SUPPRESS* is T
3081 ** signal an error if a symbol that names a declaration is used
3082 as the name of a type, or vice versa
3083 ** allow using the (declare (typespec var*)) abbreviation for
3084 (declare (type typespec var*)) with all type specifiers
3085 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3086 ** always return NIL from PPRINT-POP when OBJECT is NIL
3087 ** don't signal errors when pretty-printing malformed LABELS,
3088 FLET or MACROLET forms
3089 ** declarations in a DOLIST body are also in scope for the
3091 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3093 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3096 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3097 * fixed cross-compiler leakages that prevented building a 32-bit
3098 target with a 64-bit host compiler.
3099 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3100 opened with :IF-EXISTS :OVERWRITE.
3101 * fixed bug 281: error for an invalid qualifier in a short-form method
3102 combination method is not signalled until the faulty method is called.
3103 * bug fix: iteration variable type inferrer failed to deal with open
3104 intervals. (reported by Alan Shields)
3105 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3106 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3107 or more runtime options were provided to the sbcl binary.
3108 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3109 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3110 * optimization: there's now a fast-path for fixnum arguments in the
3111 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3112 * optimization: the code generated on x86-64 is more compact thanks
3113 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3114 * bug fix: floating-point exception handling now partly works on
3115 x86-64. (Thanks to James Knight)
3116 * improvement to the MIPS backend from Thiemo Seufer: C-style
3117 64-bit long long arguments and return values to alien functions
3119 * fixed some bugs revealed by Paul Dietz' test suite:
3120 ** the type-error signalled from WARN has a filled-in DATUM slot.
3121 ** the type-error required when a stream is not associated with
3122 a file has the stream as its datum.
3123 ** type-errors on single-floats on x86-64 no longer have
3124 :INVALID-OBJECT as the datum
3125 ** the type-errors signalled for invalid function names now have
3126 a correct expected type
3127 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3128 for structures defined with a :TYPE. Documentation strings for
3129 typed structures are no longer immediately discarded
3130 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3131 broadcast streams and synonym streams. FILE-LENGTH now also works
3132 on broadcast streams.
3134 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3135 * incompatible change: the --noprogrammer option, deprecated since
3136 version 0.7.5, has been removed. Please use the equivalent
3137 --disable-debugger option instead.
3138 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3140 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3141 inoperational for a while now) has been completely removed.
3142 * null lexical environments are now printed as #<NULL-LEXENV>,
3143 significantly reducing the amount of clutter in typical backtraces.
3144 * documentation on weak pointers, finalization, and after GC hooks
3145 has been added to the manual.
3146 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3147 as other specialized array types, is much faster. SUBSEQ and
3148 COPY-SEQ on such arrays have also been sped up.
3149 * optimization: EQL is now more efficient when at least other argument
3150 is known to be of type (OR FIXNUM (NOT NUMBER)).
3151 * fixed bug: the runtime is now less vulnerable to changes in the
3152 size of the SBCL object on OS X, and virtual memory is reserved for
3153 all spaces that need to be at a fixed address.
3154 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3155 * fixed bug: finalizers and after GC hooks that cause consing are now
3157 * fixed bug: compiler error messages and summaries are now printed to
3158 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3159 * fixed inference of the upper bound of an iteration variable.
3160 (reported by Rajat Datta).
3161 * fixed bug 211e: calling local functions with duplicated constant
3162 keyword argument no longer causes a bogus style warning about an
3164 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3165 ftype declaration to be disregarded. (reported by Dave Roberts)
3166 * fixed bug 373: caused by erronous compilation of references to alien
3167 variables in the runtime on ppc/darwin.
3168 * fixed bug 376: CONJUGATE type deriver.
3169 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3170 (reported by Baughn on #lisp)
3171 * a cross-compiler bug on non-x86 platforms has been identified and
3172 fixed. (thanks to Bruno Haible)
3173 * improvements to the MIPS runtime code for increased stability.
3174 (thanks to Thiemo Seufer)
3175 * increased the maximimum compact environment size to allow
3176 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3177 * partial workaround for bug 135: don't name the function we're
3178 calling for hairy cases of EVAL, so as not to accumulate one environment
3179 entry per call to EVAL. (reported by Kevin Reid)
3180 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3181 * optimization: type testing for non-vector arrays should be faster.
3182 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3184 * bug fix: setting 31st element of a bit vector to zero did not work
3186 * bug fix: redefining a class definition which failed due to a
3187 previous accessor / function clash now works (but see BUGS entry
3188 #380 for more problems in this area). (thanks to Zach Beane)
3189 * the long form of DEFINE-METHOD-COMBINATION disables method group
3190 checking when given a single method group with pattern *. (thanks
3192 * on x86 compiler supports stack allocation of results of simple
3193 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3194 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3195 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3196 * fixed some bugs related to Unicode integration:
3197 ** the restarts for recovering from input and output encoding
3198 errors only appear when there is in fact such an error to
3200 * fixed some bugs revealed by Paul Dietz' test suite:
3201 ** MISC.549 and similar: late transformation of unsafe type
3202 assertions into derived types caused unexpected code
3204 ** SCALE-FLOAT type deriver is less wrong.
3205 ** type derivers for EXP, LOG and similar functions compute result
3206 types for complex arguments better.
3207 ** (MISC.563) CONJUGATE type deriver works for very restricted
3209 ** out-of-line type testers for character strings are available.
3210 ** EQUAL compiler transform understands specialness of objects
3212 ** accessing double-floats stored on the stack now works on x86-64.
3213 ** debugger internals could sometimes create invalid lispobjs,
3214 resulting in GC crashes.
3215 ** MISC.548: type check weakening can convert required type into
3217 ** initialization forms for bindings are not in scope of free special
3220 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3221 * incompatible change: thread support for non-NPTL systems has
3222 been removed - locking is buggy and unreliable. A threaded
3223 SBCL build will now warn at startup and refuse to create
3224 new threads, unless futex support is detected in the kernel
3225 * incompatible change: the top level REPL now has only an ABORT
3226 restart associated with it, not TOPLEVEL and ABORT as it used to.
3227 TOP and TOPLEVEL are now available as debugger commands for
3228 returning to the top level.
3229 * incompatible change: forms evaluated in the REPL now use the
3230 global optimization policy.
3231 * incompatible change: user- and system-initialization files are
3232 no longer processed with LOAD, but by READ and EVAL; hence the
3233 global optimization policy, startup package, readtable, etc,
3235 * The .fasl file format number has been incremented because of
3236 various incompatible changes.
3237 * internal entry point details and argument counts no longer appear
3238 in backtraces unless explicitly requested by setting
3239 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3240 * built-in and standard functions no longer have names like "top
3241 level local call to FOO".
3242 * fixed bug 32: functions defined in non-null lexical environments
3243 now have more legible printed representation
3244 * fixed bug 33: functions defined in non-null lexical environemnts
3245 are now more amenable to inspection by INSPECT.
3246 * workaround for bug 354: XEPs no longer appear in backtraces unless
3247 explicitly requested.
3248 * fixed bug: receiving the signal which results from attempting to
3249 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3250 SIGBUS on other *BSDs) on architectures where the C stack is also
3251 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3252 to debugger confusion or wild instability. (reported by Cheuksan
3254 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3255 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3256 (reported by Lutz Euler)
3257 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3258 compiled code. (reported by Paul Dietz)
3259 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3260 specialized parameter to a method to something that is not TYPEP
3261 the specializer is now possible.
3262 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3263 face of package deletion.
3264 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3265 pathname. (reported by David Tolpin on c.l.l)
3266 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3267 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3268 STRING-STREAM and FILE-STREAM, respectively.
3269 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3270 than previously; in addition, its test suite is now run on build.
3271 (thanks to Luke Gorrie)
3272 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3273 * optimization: added a immediate representation for single-floats
3275 * fixed some bugs revealed by Paul Dietz' test suite:
3276 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3277 ** attempting to create a package with a colliding nickname causes
3278 correctable errors to be signalled.
3279 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3280 ** several x86-64 backend bugs related to sign-extension of immediate
3283 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3284 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3285 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3287 * fixed loading of multiply forward-referenced layouts.
3288 (thanks to Cheuksan Wang)
3289 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3290 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3291 (see COMPILE-FILE documentation for details of :PRINT option)
3292 * fixed bugs 19 and 317: fixed-format floating point printing is
3293 more accurate. This also fixes a bug reported by Adam Warner
3294 related to the ~@F format directive.
3295 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3297 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3298 dispatch table if the from-char is a dispatch macro character.
3299 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3300 by the wordsize no longer ignore the last word. (reported by Lutz
3302 * fixed bug in type checking of dynamic-extent variables. (reported
3304 * optimization: sequence traversal functions use their freedom to
3305 coerce function designators to functions.
3306 * optimization: code with many calls to CLOS methods specialized on
3307 CLOS classes has had redundant type checks removed.
3308 * optimization: added declarations to speed up operations that access
3309 the internal character database (for example STRING-UPCASE)
3310 * optimization: comparison operations between floats and sufficiently small
3311 fixnums no longer create extra rationals
3312 * fixed some bugs related to Unicode integration:
3313 ** portions of multibyte characters at the end of buffers for
3314 character-based file input are correctly transferred to the
3315 start of the buffer at the next read.
3316 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3317 passing it through to OPEN.
3318 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3319 argument given to internal calls to OPEN.
3320 ** the built-in comment readers (introduced by character sequences
3321 ";" and "#|") are more forgiving to encoding errors; they will
3322 STYLE-WARN and then attempt to resync the stream at a character
3323 boundary. (thanks to Teemu Kalvas)
3324 * fixed some bugs in the x86-64 port:
3325 ** Negative short int return values from c-calls are sign-extended
3327 ** The stack is aligned to 16-bytes for c-calls, as required by
3328 the ABI. (thanks to Cheuksan Wang)
3329 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3330 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3331 for enums. (thanks to Vincent Arkesteijn)
3332 ** Multiple small optimizations and bugfixes for floating point
3334 * fixed some bugs revealed by Paul Dietz' test suite:
3335 ** Space, Tab, Linefeed, Return and Page have the invalid
3336 secondary constituent character trait.
3337 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3339 ** WITH-INPUT-FROM-STRING should only update the index place on
3341 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3342 works more reliably.
3343 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3344 with one-dimensional arrays with fill pointers.
3345 ** TYPE-OF failed on a complex with an integer realpart and a
3347 ** compiler failure during type inference for the code of form
3348 (IF (EQL X (THE ...)) ...) (MISC.535).
3350 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3351 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3352 platform. The port supports 61-bit fixnums, large memory spaces
3353 and reloading shared object files.
3354 * enhancement: saving cores with foreign code loaded is now
3355 supported on ppc/Darwin in addition to the previously supported
3357 * enhancement: the statistical profiler now walks deeper into the
3358 call stack for more meaningful call-graphs and accrued time
3359 reports (x86/x86-64 only). It also now reports time spent in
3361 * enhancement: it is now possible to trace most individual methods
3362 of a generic function in addition to tracing the generic function
3364 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3366 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3367 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3368 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3369 produces an error. (thanks to Vincent Arkesteijn)
3370 * bug fix: NAMESTRING on pathnames with :WILD components in their
3371 directories works correctly. (thanks to Artem V. Andreev)
3372 * fixed bug 125: compiler preserves identity of closures. (reported
3374 * bug fixed: functions with &REST arguments sometimes failed with
3375 "Undefined function" when compiled with (DEBUG 3). (reported by
3377 * bug fix: overflow during compiling of setting element of a bit
3378 vector with constant index and value. (reported by Timmy Douglas)
3379 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3380 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3381 * on x86 compiler partially supports stack allocation of dynamic-extent
3383 * GO and RETURN-FROM do not check the extent of their exit points
3384 when compiled with SAFETY 0.
3385 * fixed some bugs related to Unicode integration:
3386 ** encoding and decoding errors are now much more robustly
3387 handled; it should now be possible to recover even from invalid
3388 input or output to the terminal. (thanks to Teemu Kalvas)
3389 ** provided a first cut at implementing STRING-TO-OCTETS and
3390 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3391 ** altered the SB-MD5 contributed module slightly, changing the
3392 interface just enough for it to be supportable for builds where
3393 lisp characters are not eight bits.
3394 * fixed some bugs revealed by Paul Dietz' test suite:
3395 ** the FORMATTER-generated functions for ~V[ conditionals require
3396 the correct number of arguments.
3397 ** READ-FROM-STRING returns the mandated second value when applied
3398 to displaced strings.
3399 ** the #\Rubout and #\Backspace characters are treated as invalid
3400 constituent characters by the tokenizer.
3402 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3403 * new feature: reloading changed shared object files with
3404 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3405 * new feature: references to foreign variables and functions
3406 can now be compiled and loaded before the corresponding shared
3407 object file is loaded, as long as the foreign definitions are
3408 available at runtime.
3409 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3410 supported. (thanks to Dan Debertin)
3411 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3412 just keywords. (thanks to Vincent Arkesteijn)
3413 * fixed bug #331: structure-class instances corresponding to
3414 DEFSTRUCT forms are now created eagerly.
3415 * fixed bug #345: backtraces from calls to undefined functions work
3416 on x86 as well. Related bug #61 is now also partially fixed on x86
3417 (backtraces from throws to unknown catch tags.)
3418 * bug fix: lambda-list parsing is now stricter vrt. order and number
3419 of lambda-list keywords.
3420 * bug fix: as specified by AMOP, an error is signalled if a
3421 class-option appears multiple times in a DEFCLASS form. (reported
3423 * bug fix: RANDOM can be compiled when the compiler derives the type
3424 of its numeric argument as a disjoint set of small integers.
3425 (reported by Paul Dietz)
3426 * bug fix: starting a core saved with shared objects loaded when
3427 those objects are not available no longer causes threaded SBCL to
3428 hang. (reported by Sean Ross)
3429 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3431 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3432 argument, which must always be NIL. (reported by Kalle Niemitalo)
3433 * bug fix: printing 1.0d+23 no longer results in an error.
3434 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3435 * bug fix: structure slot setters preserve evaluation order. (thanks
3437 * fixed some bugs related to Unicode integration:
3438 ** RUN-PROGRAM can allow its child to take input from a Lisp
3439 stream. (reported by Stefan Scholl)
3440 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3441 locales. (reported by Ken Causey)
3442 * fixed some bugs revealed by Paul Dietz' test suite:
3443 ** INCF, DECF and REMF evaluate their place form as specified in
3445 ** FORMATTER expands ~{ ~} iteration directives with V or #
3446 parameters correctly.
3447 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3448 consequent uses no arguments correctly.
3449 ** the system has a partial understanding of the (COMPLEX RATIO)
3451 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3454 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3455 * new feature: a build-time option (controlled by the :SB-UNICODE
3456 keyword feature, enabled by default) for building the system with
3457 support for the entire 21-bit character space defined by the
3459 * new feature: the system now has rudimentary external-format
3460 support; the primary user-visible change at this time is that
3461 characters with the high bit set (such as lower-case-e-acute) will
3462 print correctly to a terminal in a UTF-8 environment.
3463 * minor incompatible change: BASE-CHAR no longer names a class;
3464 however, CHARACTER continues to do so, as required by ANSI.
3465 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3466 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3467 has been moved to the SB-EXT package (temporarily re-exported from
3469 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3470 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3472 * fixed bug #351: better error-handlind and reporting for malformed
3474 * fixed bug #350: bignum-printing is now more memory-efficient,
3475 allowing printing of very large bignums, eg. (expt 2 10000000).
3476 (reported by Bruno Haible)
3477 * fixed bug #302: better primitive-type selection for intersection
3479 * fixed bug #308: non-graphic characters now all have names, as
3480 required. (reported by Bruno Haible)
3481 * bug fix: redefining a class with different superclasses now correctly
3482 removes it from the direct-subclasses of its previous superclasses.
3483 (reported by David Morse)
3484 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3485 new value now works. (reported by Bruno Haible)
3486 * bug fix: correct canonicalization of multiple non-standard slot
3487 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3488 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3489 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3490 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3491 now exists, an signals an error.
3492 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3493 during macroexpansion for non-iteration variables as well. (reported
3494 by Bruno Haible for CMUCL)
3495 * bug fix: Cyclic structures and unprintable objects in compiler
3496 messages no longer cause errors. (reported by Bruno Haible)
3497 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3498 and READ-FROM-STRING all now return a primary value of NIL if
3499 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3500 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3501 (reported by Bruno Haible for CMUCL)
3502 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3503 do not designate a condition. (reported by Bruno Haible for
3505 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3506 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3507 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3508 permitting resolution in favour of any of the conflicting symbols.
3509 (reported by Bruno Haible for CMUCL)
3510 * bug fix: EQUAL compiler optimizations is less aggressive on
3511 strings which can potentially compare true despite having distinct
3512 specialized array element types.
3513 * bug fix: unit enumerations can be defined without dividing by
3514 zero. (thanks to Vincent Arkesteijn)
3515 * FORMAT compile-time argument count checking has been enhanced.
3516 (report from Bruno Haible for CMUCL)
3517 * a partial workaround for the bug 262: the compiler does not try to
3518 inline-expand a local function doing RETURN-FROM from a deleted
3519 BLOCK. (thanks to Peter Denno for the bug report and to David
3520 Wragg for the simple test case)
3521 * fixed some bugs revealed by Paul Dietz' test suite:
3522 ** RENAME-PACKAGE allows all package designators as new package
3524 ** constraint propagation and lambda variable substitution are
3525 more cautious in dealing with partially deleted code.
3526 ** compiler sometimes lost reoptimization passes.
3527 ** CERROR, given a condition as condition designator, passes its
3528 remaining arguments to the continue format control without
3530 ** Case-altering FORMAT directives work correctly on non-ASCII
3532 ** The REAL type specifier handles bounds outside the floating
3533 point ranges without signalling FLOATING-POINT-OVERFLOW.
3534 ** Functions with IR1-transformations can create intercomponent
3535 references to global functions.
3536 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3538 ** FORMAT ~R treats a nil value for its first parameter correctly.
3540 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3541 * enhancement: saving cores with foreign code loaded is now
3542 supported on x86/NetBSD and sparc/Linux in addition to the previously
3543 supported platforms.
3544 * bug fix: on some platforms repeated installations caused multiple
3545 copies of HTML documentation to be installed -- should not happen
3546 any more. (reported by Stefan Scholl)
3547 * bug fix: parsing self-recursive alien record types multiple times
3548 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3549 original patch by Helmut Eller for CMUCL)
3550 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3551 (thanks to Richard Kreuter)
3552 * bug fix: defining classes whose accessors are methods on existing
3553 generic functions in other (locked) packages no longer signals
3554 bogus package lock violations. (reported by François-René Rideau)
3555 * bug fix: special variables as DEFMETHOD parameters no longer have
3556 associated bogus type declarations. (reported by David Wragg and
3558 * bug fix: read-write consistency on streams of element-type
3559 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3560 * bug fix: redefiniton of the only method of a generic function with
3561 no DEFGENERIC no longer emits a full WARNING. In addition,
3562 redefinition of generic functions with no DEFGENERIC to an
3563 incompatible lambda list now signals an error. (thanks to Zach
3565 * bug fix: DEFGENERIC now works even when there's a function of the
3566 same name in an enclosing lexical environment. (thanks to Zach
3568 * fixed compiler failure, caused by instrumenting code during
3569 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3570 * optimization: added loop analysis and improved register allocation
3571 * fixed some bugs revealed by Paul Dietz' test suite:
3572 ** POSITION on displaced vectors with non-zero displacement
3573 returns the right answer.
3574 ** (SIMPLE-STRING) is a valid type specifier for sequence
3576 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3578 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3579 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3581 ** The justification version of the FORMAT ~< directive treats
3582 non-zero minpad parameter correctly.
3584 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3585 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3586 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3587 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3588 the supported interface.
3589 * new feature: Single-stepping of code compiled with DEBUG 2 or
3590 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3591 * new feature: saving cores with foreign code loaded is now
3592 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3593 Timothy Moore's work for CMUCL)
3594 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3595 parameters to * instead of NIL if no initform is supplied.
3596 (reported by Johan Bockgaard)
3597 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3598 correctly when FUNCALL appears as the car of the form. Note:
3599 despite this FUNCALL forms are not currently subject to
3600 compiler-macro expansion. (port of Raymond Toy's fix for the
3601 same from CMUCL, reported by Johan Bockgaard)
3602 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3603 (thanks for Teemu Kalvas)
3604 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3605 case instead of terminating the iteration (thanks for Julian
3606 Squires, Sean Champ and Raymond Toy)
3607 * bug fix: incorrect expansion of defgeneric that caused a style
3608 warning. (thanks for Zach Beane)
3609 * bug fix: slot accessor effective method computation works properly
3610 for classes with multiple non-standard applicable methods on
3611 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3612 * on x86 compiler supports stack allocation of results of LIST and
3613 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3614 CMUCL implementation by Gerd Moellmann)
3615 * fixed some bugs revealed by Paul Dietz' test suite:
3616 ** FORMAT strings with both the ~<~:;~> form of the justification
3617 directive and pretty-printing directives cause an error.
3619 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3620 * incompatible change: the internal functions
3621 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3622 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3623 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3624 instead of the old functions.
3625 * new feature: on platforms where "dladdr" is available foreign
3626 function names now appear in backtraces. (based on Helmut Eller's
3628 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3629 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3631 * documentation: ASDF manual is now distributed with SBCL.
3632 * bug fix: SBCL can now load its contributed modules with REQUIRE
3633 even if the system-provided entries have been removed from
3634 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3636 * bug fix: backtraces involving undefined functions or assembly
3637 routines are more informative. (thanks to Brian Downing)
3638 * bug fix: mutually referent alien structures now work correctly.
3639 (reported by Rick Taube)
3640 * bug fix: structures defined by WITH-ALIEN can be referred to
3641 within other definitions in the same WITH-ALIEN.
3642 * bug fix: division operators (MOD, TRUNCATE and the like) with
3643 constant zero divisors and integer dividends no longer generate
3645 * bug fix: provide default methods for INPUT-STREAM-P and
3646 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3647 * bug fix: improve the detection and resolution of MOP metacycles
3648 (where effective method computation depends on the generic function
3649 having its effective method computed). (reported by Bruno Haible)
3650 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3651 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3652 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3653 * bug fix: pathnames with relative directory components can be
3654 represented relative to default pathnames.
3655 * optimization: in taking the GCD of bignums, reduce the two bignums
3656 to approximately the same size (using Euclid's algorithm) before
3657 applying the more sophisticated binary GCD. (thanks to Juho
3659 * optimization: COUNT on bitvectors now operates word-at-a-time.
3660 * optimization: ASH with a positive, but not necessarily constant,
3661 (leftwards) shift, when in a modular context, is compiled to a
3663 * fixed some bugs revealed by Paul Dietz' test suite:
3664 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3665 if the corresponding argument is NIL.
3666 ** FORMAT directives accepting a minpad parameter treat negative
3668 ** literal commas as character parameters to FORMAT directives are
3670 ** literal spaces directly after ~<Newline> directives within a
3671 format-logical-block (~:< ~@:>) do not induce :FILL-style
3672 conditional newlines.
3673 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3674 as specified: it no longer includes conditional newlines).
3675 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3677 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3678 :PER-LINE-PREFIX argument does not evaluate to a string.
3680 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3681 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3682 the manual for details; for now, package locks can be disabled by
3683 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3684 if no major problems are found then it is likely that they will be
3685 compiled in unconditionally.
3686 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3687 unsupported operators on all platforms. To load a shared library
3688 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3689 object file, link it into a shared library outside of SBCL and
3690 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3692 * bug workaround: ROOM T and the GC were not working together
3693 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3694 reporting facility aren't preserved. That reporting has been
3695 disabled, so now until and unless someone figures out how to make it
3696 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3697 * minor incompatible change: as threatened around sbcl-0.8.0, the
3698 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3699 The symbols are also exported from SB-PCL for backwards
3700 compatibility, but more so than before SB-PCL should be treated as
3701 an implementation-internal package.
3702 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3704 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3705 It is known as of this release not to work on the Alpha, however.
3706 * fixed bug #167: errors signalled due to illegal syntax in method
3707 bodies are now more legible.
3708 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3709 designators and can hence be used with TYPEP.
3710 * fixed bug #333: CHECK-TYPE now ensures that the type error
3711 signalled, if any, has the right object to be accessed by
3712 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3713 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3714 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3716 * fixed bug #334: programmatic addition of slots using specialized
3717 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3718 and :ALLOCATION :CLASS slots.
3719 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3720 float exponents. (rereported by Peter Seibel)
3721 * fixed a bug: #\Space (and other whitespace characters) are no
3722 longer considered to be macro characters in standard syntax by
3723 GET-MACRO-CHARACTER.
3724 * fixed bug: initialization of condition class metaobjects no longer
3725 causes an instance of the condition to be created. (reported by
3727 * fixed bug: it is now possible to have slots such that
3728 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3729 description is neither :INSTANCE nor :CLASS.
3730 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3731 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3732 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3733 non-standard SLOT-DEFINITION-ALLOCATION values.
3734 * fixed bugs: various race conditions handling exiting threads.
3735 CL-PPCRE's thread torture test now passes.
3736 * fixed arguably-a-bug: GC time proportional to number of threads in
3737 system even when most of them are idle
3738 * optimization: improved performance of BIT and SBIT on bit-vectors.
3739 * .fasl file incompatibility: The fasl file version number has
3740 been incremented because of changes associated with package locks.
3742 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3743 * minor incompatible change: the system no longer provides
3744 optimization hints (conditions which are TYPEP
3745 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3746 mode; these hints are still emitted when higher SPEED optimization
3748 * new contrib module: a sampling profiler (profiling by statistical
3749 sampling, rather than by instrumenting functions) is available as
3750 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3751 * the behaviour of the standard function ED is now customizeable by
3752 third parties through a hook variable: see ED's documentation
3753 string for information on the protocol.
3754 * the compiler no longer emits efficiency notes for (FUNCALL X)
3755 when the type of X is uncertain under default optimization
3757 * fixed bug 276: mutating a binding of a specialized parameter to a
3758 method to something that is not TYPEP the specializer is now
3760 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3761 exhibit the required behaviour on the x86 platform. (thanks to
3762 Peter van Eynde, Eric Marsden and Bruno Haible)
3763 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3764 even for difficult arguments. (reported by Peter Graves)
3765 * fixed bug 141a: the backquote printer now descends quoted
3767 * fixed another bug in backquote printing: no more destructive
3768 modification of the form's list structure. (reported by Brian
3770 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3771 move between its address being taken and the call to
3772 interrupt_thread, fixing a crashing race condition.
3773 * the SB-POSIX contrib implementation has been adjusted so that it
3774 no longer exhibits ridiculously poor performance when constructing
3775 instances corresponding to C structs.
3777 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3778 * minor incompatible change: the sb-grovel contrib now treats C
3779 structures as alien (in the sense of SB-ALIEN) objects rather than
3780 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3781 has implications for memory management of client code
3782 (sb-grovel-returned objects must now be manually managed) and for
3783 type safety (alien objects now have full types).
3784 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3785 used to control emission of compiler diagnostics, rather than the
3786 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3787 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3788 quality should be considered deprecated.
3789 * install.sh now installs the user manual as well
3790 * (not quite a new documentable feature, but worth considering in
3791 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3792 beginnings of a semantically meaningful condition hierarchy is
3793 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3795 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3796 designator as the defaults argument.
3797 * fixed bug: Displaced arrays whose displaced-to array has become
3798 too small now cause ARRAY-DIMENSION to signal an error, providing
3799 for safer bounds-checking. (reported by Bruno Haible)
3800 * fixed bug: DEFCLASS slot definitions with identical :READER and
3801 :WRITER names now signal a reasonable error. (reported by Thomas
3803 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3805 * fixed bug: Invalid slot specification errors now print correctly.
3806 (thanks to Zach Beane)
3807 * fixed bug 320: Shared to local slot value transfers in class
3808 redefinitions now happen corrently from superclasses as
3809 well. (reported by Bruno Haible)
3810 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3812 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3813 improper lists correctly. (reported by Bruno Haible)
3814 * fixed bug 313: source-transform for <fun-name> was erroneously
3815 applied to a call of a value of a variable with name <fun-name>.
3816 (reported by Antonio Menezes Leitao)
3817 * fixed bug 307: The obsolete instance protocol ensures that
3818 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3819 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3820 remove dead unknown-values globs from the middle of the stack.
3821 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3822 easier to resume long computations after using *BREAK-ON-SIGNALS*
3823 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3824 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3825 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3826 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3827 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3828 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3830 * fixed a (fairly theoretical) bug in string printing: if
3831 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3832 does not have array-element-type equal to the most general string
3834 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3835 function name. (thanks to Nikodemus Siivola)
3836 * fixed bug: compile-time format string checker failed on
3837 non-closed ~{. (reported by Thomas F Burdick)
3838 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3839 don't warn on legal loop code involving more than one aggregate
3840 boolean. (thanks to Nikodemus Siivola)
3841 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3842 in keyword position to MAKE-PACKAGE was not being reported as
3844 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3845 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3847 * fixed bugs 280 and 312: the checking for multiple definitions in a
3848 file is less likely to become confused by uses of inline
3850 * fixed bug: the #S reader macro performs the keyword coercion
3851 specified for slot names. (reported by Kalle Niemitalo)
3852 * fixed bug: lambda lists may contain symbols whose names start with
3853 & but are not lambda-list-keywords; their occurrence triggers a
3855 * fixed bug 321: define-method-combination argument lambda lists do
3856 not cause invalid code to be generated when &optional or &aux
3857 variables have default values. (reported by Bruno Haible)
3858 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3859 have CLOS classes; this appears also to have fixed reported
3860 instability in stack exhaustion detection.
3861 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3862 MUFFLE-WARNING when no associated restart is present is now
3864 * optimization: rearranged the expansion of various defining macros
3865 so that each expands into only one top-level form in a
3866 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3868 * optimization: used a previously little-used slot in symbols to
3869 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3871 * fixed some bugs revealed by Paul Dietz' test suite:
3872 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3874 ** Fixed an optimization bug related to inheritance of initforms
3875 from local to shared slots.
3876 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3877 ** CAST optimizer forgot to flush argument derived type.
3878 ** print/read consistency on floats is now orders of magnitude
3879 more likely. (thanks also to Bruno Haible for a similar report
3881 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3882 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3883 for objects of type REAL. Make it so.
3884 ** SXHASH is specified (infelicitously) to respect similarity,
3885 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3886 it so. (thanks to Markus Ziegler)
3887 ** on the Alpha, the compiler succeeds in compiling functions
3888 returning a known number of arguments greater than 63.
3889 ** fixed handling of invalid NIL arguments in keyword position
3891 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3893 ** provided a readably-printable representation for RANDOM-STATE
3895 ** ensured that pathnames, where they have a namestring, always
3896 print using #P"..." syntax.
3898 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3899 * Support for the forthcoming 2.0 version of the NetBSD kernel
3900 running on x86 hardware has been added. (thanks to Perry
3901 E. Metzger most immediately, and others for their past work)
3902 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3903 current release version; SBCL's OpenBSD support had been broken
3904 since about the time of OpenBSD's switch to ELF binary format.)
3905 * [placeholder for DX summary]
3906 ** user code with &REST lists declared dynamic-extent, under high
3907 speed or space and low safety and debug optimization policy.
3908 * The manual has been converted to Texinfo format and the debugger
3909 chapter from the cmucl manual has been added.
3910 * A facility has been added to extract documentation strings from
3911 sbcl and store them as Texinfo-formatted snippets for inclusion in
3912 the manual (via Texinfo's @include directive)
3913 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3914 the test case to Dave Roberts)
3915 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3916 pointers. (reported by Sean Ross)
3917 * bug fix: PROFILE output is printed nicely even for large numerical
3918 values. (thanks to Zach Beane)
3919 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3920 greater than 32 handle EOF correctly.
3921 * bug fix: on X86 an immediate argument of the IMUL instruction is
3922 correctly printed in disassembly. (thanks to Lutz Euler)
3923 * bug fix: class slots in redefined classes preserve their old
3924 values. (thanks to Bruno Haible and Nikodemus Siivola)
3925 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3926 succeeds. (reported by Marco Baringer)
3927 * fixed some bugs revealed by Paul Dietz' test suite:
3928 ** READ-SEQUENCE now works on ECHO-STREAMs.
3929 ** RATIONALIZE works more according to its specification. (thanks
3932 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3933 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3934 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3935 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3936 should matter to you only if you rebind the printer control
3937 variables and then find you want different bindings in the
3938 debugger than in the ordinary execution of your program.)
3939 * The runtime build system has been tweaked to support building
3940 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3941 assembler and linker. (thanks to Nikodemus Siivola)
3942 * Unbound, undefined, undeclared variables now trigger full
3943 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3944 more often programmer error than deliberate exploitation of undefined
3946 * optimization: the hash algorithm for strings has changed to one
3947 that is less vulnerable to spurious collisions. (thanks to Juho
3949 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3950 needless bounds checking. (thanks to Juho Snellman)
3951 * optimization: implemented multiplication as a modular
3952 (UNSIGNED-BYTE 32) operation on the PPC backend.
3953 * fixed some bugs revealed by Paul Dietz' test suite:
3954 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3956 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3957 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3958 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3960 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3962 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3964 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3965 their output stream on EOF from read.
3966 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3967 have been read to end-of-file.
3968 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3970 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3971 description of determination of which consecutive characters
3973 ** Printing the "Space" character with escaping on now yields "#\\ ",
3974 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3975 ** Reading floating-point numbers with *READ-BASE* set to a number
3976 less than 10 works correctly.
3977 ** Reading floating-point numbers with *READ-BASE* set to a number
3978 more than 10 works correctly.
3979 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3980 the readtable currently in effect.
3982 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3983 * minor incompatible change: parsing of namestrings on a physical
3984 (Unix) host has changed; numbers after the final #\. in a
3985 namestring are no longer interpreted as a version field. This is
3986 intented to be largely invisible to the user, except that the
3987 meaning of the namestring "*.*.*" has changed: it now refers to a
3988 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3989 should usually be replaced by
3990 (make-pathname :name :wild :type :wild :version :wild)
3991 with the added benefit that this is more likely to be portable.
3992 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3993 option to OPEN now signals an error if the file being opened
3994 exists; this may have an impact on existing code.
3995 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3996 signals received, on the PowerPC platforms (both Linux and
3997 Darwin). (thanks to Pierre Mai for pointing out the location of
3999 * several fixes on OS X: The system now builds and runs cleanly on
4000 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4001 (thanks to Brian Mastenbrook)
4002 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4003 second-resolution: integer multiples of 1/3600 between -24 and 24.
4004 (thanks to Vincent Arkesteijn)
4005 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4006 type when called with 1 argument; PEEK-CHAR checked type of
4007 PEEK-TYPE only after having read first character from a
4008 stream. (reported by Peter Graves)
4009 * bug fix: the garbage collector now has much better locality
4010 behaviour, and in particular no longer treats all memory as being
4011 exhausted when many small objects point to each other in a deeply
4013 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4014 recognized as being TYPEP their class.
4015 * bug fix: the PUSHNEW documentation string has been corrected.
4016 (thanks to Vincent Arkesteijn)
4017 * bug fix: defaulting of the value for the last of an atypically
4018 large number of multiple values being bound was not being
4019 performed correctly on the Alpha or PPC platforms
4020 * optimization: implemented multiplication as a modular
4021 (UNSIGNED-BYTE 32) operation on the x86 backend.
4022 * optimization: SEARCH on simple-base-strings can now be open-coded.
4023 (see also contrib/compiler-extras.lisp for inspiration for
4024 teaching the compiler about the Boyer-Moore algorithm).
4025 * value, returned by MAX (and MIN) called with several EQUALP, but
4026 not EQL, arguments now does not depend on compiler settings.
4027 * fixed some bugs revealed by Paul Dietz' test suite:
4028 ** in stack analysis liveness information is propagated from
4029 non-local entry points.
4030 ** pathwise CAST removing failed when the CAST node did not start
4032 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4033 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4035 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4036 host is already defined.
4037 ** RENAME-FILE works on streams instead of signalling an internal
4039 ** PEEK-CHAR uses the current readtable when determining whether
4040 or not a character is whitespace.
4041 ** MERGE-PATHNAMES handles the case when the pathname does not
4042 specify a name while the default-pathname specifies a version.
4043 ** Pathnames now stand a better chance of respecting print/read
4045 ** Attempting to use standardized file system operators with a
4046 pathname with invalid :DIRECTORY components signals a
4048 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4050 ** DIRECTORY on logical pathnames is more correct.
4051 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4052 signal a TYPE-ERROR if their argument is not a stream.
4053 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4054 designator argument does not designate a stream.
4055 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4056 examining the synonym.
4057 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4059 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4060 element-type larger than ([UN]SIGNED-BYTE 32).
4062 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4063 * When built with the :SB-FUTEX feature, threaded builds now take
4064 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4065 for faster/more reliable mutex and condition variable support.
4066 * Incompatible change (but one you probably shouldn't have been using
4067 anyway): the interface and code for arbitrating between multiple
4068 threads in the same user session has been redesigned.
4069 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4070 error when called without an explicit environment argument.
4071 (thanks to Nikodemus Siivola)
4072 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4073 confused about their position. (thanks to Adam Warner and Gerd
4075 * bug fix: Pretty printing backquoted forms with unquotations in the
4076 argument list position of various code constructs such as LAMBDA
4077 now works correctly. (reported by Paul Dietz)
4078 * bug fix: Pretty printing unquotations no longer loses all
4079 stream position information.
4080 * optimization: performance of string output streams is now less
4081 poor for multiple small sequence writes.
4082 * optimization: performance of CSUBTYPEP in the presence of complex
4083 expressions involving CONS and NOT many times has been improved.
4084 (reported by Paul Dietz)
4085 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4087 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4088 streams for the REPL, for the debugger, and so on. (thanks to
4090 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4091 * fixed some bugs revealed by Paul Dietz' test suite:
4092 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4093 is ignored if it is too small, rather than propagating through
4094 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4095 ** extremely complex negations of CONS types were not being
4096 sufficiently canonicalized, leading to inconsistencies in
4098 ** VALUES tranformer lost derived type.
4100 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4101 * fixed a bootstrapping bug: the build process no longer assumes
4102 that the various BOOLE-related constants have the same value in
4103 host and target lisps. (noted by Paul Dietz' test suite on an
4104 SBCL binary built from CLISP)
4105 * The system can now be dynamically linked on the MIPS platform,
4106 which enables dynamic loading of foreign code from Lisp. (thanks
4107 to Ralf Baechle for discussions on the MIPS ABI)
4108 * The system now records debugging information for its own source
4109 files in a filesystem-position-independent manner, relative to
4110 the "SYS" logical host.
4111 * fixed a compiler bug: MV-LET convertion did not check references
4112 to the "max args" entry point. (reported by Brian Downing)
4113 * tweaked disassembly notes to be less confident about proclaiming
4114 some instruction as an LRA. (thanks to Brian Downing)
4115 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4116 now each have their own history, command character, and other
4117 characteristics. (thanks to David Lichteblau)
4118 * fixed some bugs revealed by Paul Dietz' test suite:
4119 ** compiler failure in compiling LOGAND expressions including a
4121 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4122 shift greater than 32.
4123 ** FLUSH-DEST did not mark blocks for type check regeneration.
4124 ** HANDLER-CASE failed to accept declarations in handler clauses
4125 in some circumstances.
4127 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4128 * New code in contrib/sb-introspect (still probably not entirely
4129 stable yet) provides some support for smart Lisp development
4130 environments like SLIME.
4131 * The conditions signalled for errors occurring when loading .fasl
4132 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4133 in a way which should help ASDF recover gracefully.
4134 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4135 stuff has been cleaned up. If you code contrib/ stuff, this might
4136 affect you, and you can look at contrib/README, contrib/STANDARDS,
4137 and/or the 0.8.4.27 diff to check.
4138 * In full calls the compiler now does not generate checks for declared
4139 argument types for all arguments.
4140 * various threading fixes
4141 ** and some experimental patches which didn't make it into
4142 the main tree for this release, but which are shipped in
4143 contrib/experimental-thread.patch as a possible fix for some
4144 failures (deadlock, spinning...) in GC-intensive multithreaded
4146 * fixed PPC build problem (source code incompatibility of different
4147 library versions): added offsetof() hackery which attempts to divine
4148 where glibc maintainers put uc_mcontext today
4149 * fixed bug 282: compiler does not trust type assertions while passing
4150 arguments to a full call.
4151 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4152 &OPTIONAL VALUES type parameter.
4153 * fix bug 214: algorithm for noting rejected templates is now more
4154 similar to that of template seletion. (also reported by rydis on
4156 * fixed bug 141b: printing backquoted information readably and prettily
4157 inserts a space where necessary.
4158 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4159 (CHARACTER 10) are now reported as errors, rather than propagated
4160 as unknown types. (reported by piso on #lisp)
4161 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4162 with values NIL and :ERROR. (thanks to Milan Zamazal)
4163 * fixed bug 191c: CLOS now does proper keyword argument checking as
4164 described in CLHS 7.6.5 and 7.6.5.1.
4165 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4166 longer raise an error; further, using a list as a for-as-arithmetic
4167 counter now raises a meaningful error.
4168 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4169 now understood by sequence creation functions such as MAKE-SEQUENCE
4171 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4172 a STRING-INPUT-STREAM.
4173 * compiler enhancement: SIGNUM is now better able to derive the type
4175 * type declarations inside WITH-SLOTS are checked. (reported by
4177 * fixed some bugs revealed by Paul Dietz' test suite:
4178 ** incorrect optimization of TRUNCATE for a positive first
4179 argument and negative second.
4180 ** compiler failure in let-convertion during flushing dead code.
4181 ** compiler failure while deriving type of TRUNCATE on an
4182 interval, containing 0.
4183 ** ASH of a negative bignum by a negative bignum count now returns
4185 ** intersection of CONS types now canonicalizes properly, fixing
4186 inconsistencies in SUBTYPEP.
4188 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4189 * incompatible change: The --disable-debugger command line
4190 option now clobbers the debugger at a more fundamental
4191 level, by redefining #'INVOKE-DEBUGGER instead of by
4192 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4193 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4194 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4195 enter the debugger REPL and then suffer recursive errors
4196 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4197 while under the new system, BREAK in --disable-debugger mode
4198 terminates the system just as an unhandled error would.
4199 * fixed compiler performance when processing loops with a step >1;
4200 * bug fix: DOCUMENTATION now retrieves generic function
4201 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4202 support has been systematized, and now supports the methods
4203 specified by ANSI, along with a default method and a method for
4204 slot documentation. (reported by Nathan Froyd)
4205 * bug fix: effective methods associated with a generic function are
4206 no longer cached over a change of that generic function's method
4207 combination. (reported by Andreas Fuchs)
4208 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4209 names a non-existent directory. (thanks to Andreas Fuchs)
4210 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4211 the PPC platform, lead to stack corruption; this has been fixed.
4212 (reported by Rainer Joswig)
4213 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4214 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4215 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4216 arithmetic in general, is now much more reliable on the PPC
4218 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4219 platform now returns the right answer.
4220 * optimization: restored some effective method precomputation in
4221 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4222 precomputation is now tunable.
4223 * optimization: compiler-internal data structure use has been
4224 reviewed, and changes have been made that should improve the
4225 performance of the compiler by about 20%.
4226 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4227 simple-base-strings and simple-bit-vectors is improved.
4228 * optimization: the optimization of 32-bit logical and arithmetic
4229 functions introduced in version 0.8.3 on the x86 has been
4230 implemented on the mips, ppc and sparc platforms; an
4231 implementation of the same facility, but for 64-bit arithmetic,
4232 has been added for the alpha.
4233 * microoptimization: the compiler is better able to make use of the
4234 x86 LEA instruction for multiplication by constants.
4235 * bug fix: in some situations compiler did not report usage of
4236 generic arithmetic in (SPEED 3) policy.
4237 * bug 145b fix: compiler used wrong type specifier while converting
4238 MEMBER-types to numeric.
4239 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4241 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4242 index argument now works properly on the Alpha platform.
4243 * bug fix: floating point exception treatment on the Alpha platform
4245 * bug fix: FILE-POSITION works much better on string input and
4246 output streams. (thanks to Nikodemus Siivola)
4247 * bug fix: many threading/garbage collection symptoms sorted.
4248 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4249 might be pseudo-atomic.
4250 * internal change: Stopping for GC is now done with signals not
4251 ptrace. GC is now done in whichever thread wanted it, instead of
4253 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4255 * bug fix: result form in DO is not contained in the implicit
4257 * incompatible change: ICR structure is changed; the value part of
4258 CONTINUATION is now called LVAR; corresponding functions are
4259 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4260 * added type deriver for ISQRT (thanks to Robert E. Brown).
4261 * bug fix: better support for loading from the command line when an
4262 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4264 * fixed some bugs revealed by Paul Dietz' test suite:
4265 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4266 ** ROUND and FROUND now give the right answer when given very
4267 small float arguments.
4268 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4270 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4271 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4272 ** LCM should return a non-negative integer.
4273 ** PARSE-INTEGER returned the index of a terminator instead of the
4274 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4275 ** PARSE-INTEGER returned an incorrect index being applied to a
4277 ** LCM with two arguments of 0 returns 0 rather than signalling
4279 ** unsigned addition of a 32-bit constant with the high bit set no
4280 longer causes an internal compiler error on the x86.
4281 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4282 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4283 with negative last argument.
4284 ** byte specifiers with zero size and position no longer cause
4285 an error during type derivation.
4286 ** bignum multiplication on the Alpha platform now returns the
4288 * porting: The system now builds on SuSE AMD64, although it still
4289 generates a 32-bit binary.
4290 * .fasl file incompatibility: The fasl file version number has
4291 been incremented (because of the changes to internal compiler
4292 data structures referred to above).
4294 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4295 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4296 more accurately, on the Darwin kernel running on PowerPC hardware.
4297 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4298 * Compiler code deletion notes now signal a condition of type
4299 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4300 an associated MUFFLE-WARNING restart.
4301 * The compiler now performs limited argument count validation of
4302 constant format strings in FORMAT, and where appropriate in ERROR,
4303 CERROR and WARN. (thanks to Gerd Moellmann)
4304 * New ASDF-INSTALL contrib can be used for automatic download and
4305 installation of third-party Lisp code from CCLAN or other sites
4307 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4308 which forces another thread to execute a function supplied by the
4310 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4311 now accept and act upon their :ELEMENT-TYPE keyword argument.
4312 (reported by Martin Atzmueller, Edi Weitz)
4313 * bug fix: FILE-POSITION now accepts position designators up to
4314 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4315 is the greater. (thanks to Patrik Nordebo)
4316 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4317 Kalle Olavi Niemitalo)
4318 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4319 printable. (reported by Eric Marsden)
4320 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4321 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4322 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4323 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4324 (thanks to Stig Sandoe)
4325 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4326 UNREAD-CHAR now correctly includes the unread character in the
4327 target sequence. (thanks to Gerd Moellmann)
4328 * bug fix in threaded builds: the system can now be suspended and
4329 resumed by shell job control with minimal disruption.
4330 * bug fixes in times and timezones >2038AD
4331 * better handling of "where is GNU make?" problem in build scripts
4332 (thanks to Nikodemus Siivola)
4333 * new optimization: inside a named function any reference to a
4334 function with the same name is considered to be a self-reference;
4335 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4336 optimization quality.
4337 * new optimization on x86: logical functions and + now have
4338 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4339 used when the result is truncated to 32 bits.
4340 * VALUES declaration is partially enabled.
4341 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4342 * fixed some bugs revealed by Paul Dietz' test suite:
4343 ** The system now obeys the constraint imposed by
4344 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4345 types form a lattice under type intersection.
4346 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4347 ** ASSOC now ignores NIL elements in an alist.
4348 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4349 and (1+ MOST-POSITIVE-FIXNUM) answers.
4350 ** The addition of a method with invalid qualifiers to a generic
4351 function does not cause an error to be signalled immediately;
4352 a warning is signalled, and the error is generated only on
4353 calling the generic function.
4354 * changed .fasl file version number, in part to add type codes for
4355 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4356 obscure ANSI requirements
4358 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4359 * fixed bug 148: failure to inline-expand a local function left
4360 garbage, confusing the compiler.
4361 * fixed bugs 3cd: structure slot readers perform type check if the
4362 slot can have an invalid value (i.e. it is either not initialized
4363 or can be written with a less specific slot writer).
4364 * bug fix: the compiler now traps array references to elements off
4365 the end of an array; previously, the bounds checking in some
4366 circumstances could go off-by-one.
4367 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4369 * type declarations for array element types now obey the description
4370 on the CLHS page "Declaration TYPE", as per discussions on
4371 sbcl-help around 2003-05-08. This means that a declaration
4372 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4373 declaration, all references to BAR will be asserted or assumed
4374 (with THE, so dependent on compiler policy) to involve objects of
4375 type FOO. Note that no such declaration is implied in
4376 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4377 * declared types of functions from the "Conditions"
4378 chapter. (reported by Paul Dietz)
4379 * bug fix: CERROR accepts a function as its first argument.
4380 * bug fix: NTH an NTHCDR accept a bignum as index
4381 arguments. (reported by Adam Warner)
4382 * optimization: character compare routines now optimize comparing
4383 against a constant character. (reported by Gilbert Baumann)
4384 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4385 argument now works properly on the MIPS platform.
4386 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4387 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4388 declared to have a functional type, does not cause an error
4390 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4391 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4392 * fixed bug: if last continuation of a deleted block has a
4393 destination, this destination should be deleted too. (reported by
4395 * fixed a bug in the bootstrap process: the host compiler's values
4396 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4397 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4398 test case from Patrik Nordebo)
4399 * improved the ability of the disassembler on the PPC platform to
4400 provide helpful disassembly notes.
4401 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4402 the class in more cases than previously.
4403 * bug fix: FILE-POSITION now understands :START and :END for
4404 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4405 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4406 8) data. (thanks to David Lichteblau)
4407 * bug fix: it is possible to add a method to a generic function
4408 without lambda list.
4409 * bug fix: reader failed to signal END-OF-FILE inside an
4410 object representation. (reported by Nikodemus Siivola)
4411 * fixed some bugs revealed by Paul Dietz' test suite:
4412 ** LAST and [N]BUTLAST should accept a bignum.
4413 ** condition slot accessors are methods.
4414 ** (VECTOR NIL) is a subtype of STRING.
4416 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4417 * minor incompatible change: some nonsensical specialized lambda
4418 lists (used in DEFMETHOD) which were previously ignored now signal
4420 * minor incompatible change: the system is now aware of the types of
4421 variables in the COMMON-LISP package, and will signal errors for
4422 most violations of these type constraints (where previously they
4423 were silently accepted).
4424 * minor incompatible change: COMPILE-FILE now uses the freedom
4425 afforded (ANSI 3.2.2.3) to use derived function types for
4426 functions defined in the same file. This also permits the system
4427 to warn on static type mismatches and function
4428 redefinition. (Currently it does not work with high DEBUG level.)
4429 * minor incompatible change: VALUES declaration is disabled.
4430 * When issuing notes, the compiler now signals a condition of type
4431 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4432 restart for use in user handlers. It is expected that the
4433 COMPILER-NOTE condition will eventually become a condition
4434 supertype to a hierarchy of note types, which will then be
4435 handleable in a similar fashion. However, at the moment, no such
4436 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4437 but it's an implementation detail, not a classification for the
4439 * Changes in type checking closed the following bugs:
4440 ** type checking of unused values (192b, 194d, 203);
4441 ** template selection based on unsafe type assertions (192c, 236);
4442 ** type checking in branches (194bc).
4443 * A short form of VALUES type specifier has ANSI meaning (it has
4444 increased the number of situations when SBCL cannot perform type
4446 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4447 keywords or constants is permissible.
4448 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4449 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4450 classes. (thanks to Antonio Martinez)
4451 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4452 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4453 argument to a pretty-print stream. Instead, it leaves any such
4454 operations to DESCRIBE-OBJECT methods.
4455 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4457 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4458 lambda lists. (thanks to David Lichteblau)
4459 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4460 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4461 (thanks to Gerd Moellmann)
4462 * fixed bug 246: increased compilation speed of long
4463 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4465 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4467 * DEFCONSTANT now throws a condition of type
4468 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4469 constant to a non-EQL value; CONTINUE and ABORT restarts
4470 respectively change and preserve the value.
4471 * fixed bug 63: The code walker, part of the implementation of CLOS,
4472 is now better at handling symbol macros.
4473 * bug fix: There is no longer an internal implementation type named
4474 CL:LENGTH. (reported by Raymond Toy)
4475 * bug fix: In macro-like defining macros/special operators the
4476 implicit block does not enclose the lambda list.
4477 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4478 enclosed in parentheses) are not suitable as type specifiers, and
4479 their use properly signals an error now.
4480 * bug fix: An argument count mismatch for a type specifier in code
4481 being compiled no longer causes an unhandled error at compile
4482 time, but signals a compile-time warning.
4483 * fixed simple vector readable printing
4484 * bug fix: DESCRIBE takes more care over whether the class
4485 precedence list slot of a class is bound before accessing it.
4486 (reported by Markus Krummenacker)
4487 * bug fix: FORMATTER can successfully compile pretty-printer format
4488 strings which use variants of the ~* directive inside.
4489 * bug fix: SEARCH now applies its TEST predicate to the elements of
4490 the arguments in the correct order. (thanks to Wolfhard Buss)
4491 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4492 in type inference. (thanks to Robert E. Brown)
4493 * bug fix: Reading in symbols with an explicit package name of ""
4494 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4495 * fixed some bugs revealed by Paul Dietz' test suite:
4496 ** NIL is now allowed as a structure slot name.
4497 ** Arbitrary numbers, not just REALs, are allowed in certain
4498 circumstances in LOOP for-as-arithmetic clauses.
4499 ** Multiple class redefinitions before slot access no longer
4500 causes a type error.
4501 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4502 association between the name and a class.
4503 ** Generic functions with non-standard method-combination and over
4504 five methods all of which return constants no longer return NIL
4505 after the first few invocations. (thanks to Gerd Moellmann)
4506 ** CALL-NEXT-METHOD with no arguments now passes the original
4507 values of the arguments, even in the presence of assignment.
4508 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4510 ** DISASSEMBLE works with closures and funcallable instances.
4511 ** ADD-METHOD now returns the generic function, not the new method.
4512 ** FIND-METHOD signals an error if the lengths of the specializers
4513 is incompatible with the generic function, even if the ERRORP
4515 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4516 which its argument is a member.
4517 ** DEFCLASS only redefines the class named by its class-name
4518 argument if that name is the proper name of the class;
4519 otherwise, it creates a new class.
4520 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4521 of the UNBOUND-SLOT condition to the name of the slot.
4522 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4523 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4524 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4525 SLOT-MAKUNBOUND in the specified fashion.
4527 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4528 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4529 cross-compilation host. As a consequence, we can now bootstrap our
4530 way up to SBCL starting with a bare gcc toolchain and human-readable
4531 source code (first the source to CLISP, then the source to SBCL).
4532 * A contributed module containing a partial implementation of the
4533 simple-streams interface has been included. (thanks to Rudi
4535 * A contributed module implementing the RFC1321 Message Digest
4536 Algorithm, known as MD5, has been included.
4537 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4538 no longer has any effect, as the code controlled by this feature
4539 has been deleted. (As far as we know, no-one has ever built using
4540 this feature, and its semantics were confused in any case).
4541 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4542 work on conditions (as required by the ANSI specification),
4543 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4544 expected behaviour on conditions. Users should note, however,
4545 that such behaviour is not required by the ANSI specification,
4546 and so use of this behaviour may render their code unportable.
4547 * fixed some bugs revealed by Paul Dietz' test suite:
4548 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4550 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4551 ** SXHASH on condition objects no longer returns NIL.
4552 ** :ALLOCATION :CLASS slots are better treated; their values are
4553 updated on class redefinition, and initforms inherited from
4554 superclasses are applied.
4555 ** REMOVE-METHOD returns its generic function argument even when
4556 no method was removed.
4557 ** SHARED-INITIALIZE now initializes the values of the requested
4558 slots, including those with :ALLOCATION :CLASS.
4559 ** ALLOCATE-INSTANCE now works on structure classes defined via
4560 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4562 ** SLOT-EXISTS-P now works on conditions, as well as structures
4564 ** MAKE-LOAD-FORM now has the required methods on
4565 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4566 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4567 keyword, and now implements the SLOT-NAMES argument.
4568 ** methods with &OPTIONAL arguments no longer allow too many
4569 arguments to be passed in the call without error.
4570 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4571 option is consistent with the required arguments of the generic
4572 function lambda list.
4573 * bug fix: REQUIRE accepts a string designator. (Thanks to
4575 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4576 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4577 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4578 * bug fix: The compiler now checks for duplicated variables in macro
4580 * bug fix: SETQ on globals returns the correct value.
4581 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4582 not a COMPILER-ERROR (followed by some other strange error on
4583 choosing the CONTINUE restart).
4584 * bug fix: make.sh and friends are now more consistent in the way that
4585 they look for GNU "make".
4587 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4588 * experimental native threads support (on x86 Linux >=2.4 only).
4589 This is not compiled in by default: you need to add :SB-THREAD to
4590 the target features. See the "Beyond ANSI" chapter of the manual
4592 * fix for longstanding nonANSIism: The old distinction between
4593 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4594 The return value from CL:FIND-CLASS is now a CLOS class, and
4595 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4596 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4597 * An interface to the MetaObject Protocol, as described in Kiczales,
4598 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4599 MIT Press, 1991, is available from the SB-MOP package.
4600 * incompatible change: the SB-PCL package should now be considered
4601 a private implementation detail, and no longer a semi-private MOP
4603 * minor incompatible change: due to rearrangement for threads, the
4604 control stack and binding stack are now allocated at arbitrary
4605 addresses instead of being hardcoded per-port. Users affected by
4606 this probably have to be doing advanced things with shared
4607 libraries, and will know who they are.
4608 * minor incompatible change: Previously, all --eval forms used were
4609 processed with READ before any of them were processed with EVAL.
4610 Now each --eval form is processed with both READ and EVAL before
4611 the next --eval form is processed. (Thus package operations like
4612 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4613 work as the user might reasonably expect.)
4614 * minor incompatible change: *STANDARD-INPUT* is now only an
4615 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4617 * minor incompatible change: Y-OR-N-P is now character-oriented,
4618 not line oriented. Also, YES-OR-NO-P now works without errors.
4619 (thanks to Antonio Martinez)
4620 * sb-aclrepl module improvements: an integrated inspector, added
4621 repl features, and a bug fix to :trace command.
4622 * Known functions, which cannot be open coded by the backend, are
4623 considered to be able to check types of their arguments. (fixing
4624 a bug report by Nathan J. Froyd)
4625 * fixed a bug in computing method discriminating functions: It is
4626 now possible to define methods specialized on classes which have
4627 forward-referenced superclasses. (thanks to Gerd Moellmann)
4628 * fixed evaluation order in optional entries (reported by Gilbert
4630 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4631 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4632 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4633 required-by-AMOP NAME argument, as well as CLASS and
4634 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4635 * fixed bug 20: DEFMETHOD can define methods using names that are
4636 not the proper names of classes to designate class specializers.
4637 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4638 Unix file descriptors, instead of blowing up. (thanks to Antonio
4640 * Garbage collection refactoring: user-visible change is that a
4641 call to the GC function during WITHOUT-GCING will not do garbage
4642 collection until the end of the WITHOUT-GCING. If you were doing
4643 this you were probably losing anyway.
4644 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4645 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4646 TYPEP the latter but not the former.
4647 * The compiler issues a full WARNING for calls to undefined functions
4648 with names from the CL package.
4649 * MAP-INTO for a vector destination is open coded. (reported by
4650 Brian Downing on c.l.l)
4651 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4652 documentation string.
4653 * fixed some bugs revealed by Paul Dietz' test suite:
4654 ** COPY-ALIST now signals an error if its argument is a dotted
4656 ** Condition slots are now accessed more correctly in the presence
4657 of multiple initargs for a given slot.
4658 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4659 exclude restarts of the same name associated with a different
4661 ** DEFCLASS of forward-referenced classes with another
4662 forward-referenced class in the superclasses list no longer
4664 ** Condition slots are now initialized once each, not multiple
4665 times. (thanks to Gerd Moellmann)
4666 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4668 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4669 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4670 arguments contain duplicated elements.
4671 ** RESTART-CASE understands local macros.
4672 ** RESTART-CASE associates exactly its own restarts with a condition.
4673 ** ENDP in safe mode checks its argument to be of type LIST.
4674 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4675 in question is unbound.
4676 ** Optimized MAKE-INSTANCE functions no longer cause internal
4677 assertion failures in the presence of duplicate initargs.
4678 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4679 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4680 propagated even in the ctor optimized implementation of
4682 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4684 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4685 * a better implementation of SXHASH on (simple) bit vectors,
4686 measured both in execution speed and in distribution of results
4687 over the positive fixnums, has been installed. Likewise, a better
4688 implementation of EQUAL for simple bit vectors is now available.
4689 * fixed CEILING optimization for a divisor of form 2^k.
4690 * fixed bug 240 (emitting extra style warnings "using the lexical
4691 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4692 by Antonio Martinez)
4693 * fixed SXHASH, giving different results for NIL depending on type
4694 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4695 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4696 variable. (found by Rolf Wester)
4697 * SBCL does not ignore type declarations for special
4698 variables. (reported by rif on c.l.l 2003-03-05)
4699 * some bug fixes in contrib/sb-aclrepl/
4700 * fixed some bugs revealed by Paul Dietz' test suite:
4701 ** a bug in the CONS type specifier, whereby the CAR and CDR
4702 types got intertwined, has been fixed;
4703 ** the type system is now able to reason about the interaction
4704 between INTEGER and RATIO types more completely;
4705 ** APPEND, [N]REVERSE and NRECONC check that those their
4706 arguments, which must be proper lists, are really so;
4707 ** An array specialized to be unable to hold elements has been
4708 implemented, as required -- yes, really -- by ANSI;
4709 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4710 on malformed property lists;
4712 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4713 * incompatible packaging change: in line with Unix convention,
4714 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4715 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4716 * REQUIRE and PROVIDE are now optionally capable of doing something
4717 useful. See the documentation string for REQUIRE.
4718 * infrastructure for a managed SBCL contrib system: contributed
4719 modules in this release include:
4720 ** the ASDF system definition facility;
4721 ** an interface to the BSD Sockets API;
4722 ** an ACL-like convenience interface to the repl;
4723 (thanks to Kevin Rosenberg)
4724 ** an implementation of ROTATE-BYTE, with efficient implementation
4726 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4727 gives a closer approximation to the right answer than previously.
4728 (thanks to Raymond Toy)
4729 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4730 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4731 optional environment arguments, as required by ANSI.
4732 * fixed bugs in other functions taking environment objects, allowing
4733 calls with an explicit NIL environment argument to be compiled
4735 * fixed bug 228: primary return values from
4736 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4737 COMPILE or FUNCTION.
4738 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4739 :TYPE will no longer signal errors on innocuous objects.
4740 * fixed bug 231b: SETQ is better at respecting type declarations in
4741 the lexical environment.
4742 * fixed a bug in DEFCLASS: classes named by symbols with no or
4743 unprintable packages can now be defined.
4744 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4745 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4746 * fixed compiler failure related to checking types of functions.
4747 (reported by Robert E. Brown)
4748 * the compiler is now much more consistent in its error-checking
4749 treatment of bounding index arguments to sequence functions: in
4750 (SAFETY 3) code, errors will be signalled in almost all cases if
4751 invalid sequence bounding indices are passed to functions defined
4752 by ANSI to operate on sequences.
4753 * fixed a bug in the build procedure: documentation of SBCL-specific
4754 packages is now preserved and available in the final Lisp image.
4755 * lifted FDEFINITION lookup out of loops in the implementation of
4756 many list operations. (thanks to Robert E. Brown)
4757 * fixed a bug in the reader: the #n# reader macro now works for
4758 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4759 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4760 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4761 E. Brown and Tony Martinez respectively)
4762 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4763 SLOT-BOUNDP: in particular, it is now able to optimize them much
4764 better, and is now not vulnerable to having packages renamed.
4765 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4766 always called when a slot is not present in an instance. (thanks
4768 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4769 longer signal an error on unreading a character following EOF on
4770 the previous constituent stream. (thanks to Tony Martinez)
4771 * fixed some bugs revealed by Paul Dietz' test suite:
4772 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4773 not just nonnegative fixnums;
4774 ** the logical bit-array operators such as BIT-AND now accept an
4775 explicit NIL for their "opt-arg" argument (to indicate a
4776 freshly-consed result bit-array);
4777 ** ELT now signals an error on an invalid sequence index in safe
4779 ** the type system is now cleverer about negations of numeric
4780 types, and consequently understands the BIGNUM and RATIO types
4782 ** the type system is now cleverer about the interaction between
4783 INTEGER and RATIO types: while bugs still remain, many more
4784 cases are accurately computed;
4785 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4786 if it is in the last clause;
4787 ** CONSTANTLY now correctly returns a side-effect-free function in
4789 ** DECLARE is no longer treated as a special-operator; in
4790 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4791 * incremented fasl file version number due to the change in the
4792 DEFSTRUCT-SLOT-DESCRIPTION structure.
4794 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4795 * minor incompatible change: code processed by the "interpreter" or
4796 EVAL now has a compilation optimization policy of (DEBUG 2)
4797 (changed from (DEBUG 1)) to improve debuggability of interactive
4798 development, and to allow the use of the debug RETURN command in
4800 * an experimental implementation of the RETURN command for the
4801 debugger has been included. (thanks to Frederik Kuivinen)
4802 * fixed bug 62: constraints were not propagated into a loop.
4803 * fixed bug in embedded calls of SORT (reported and investigated by
4805 * fixed some bugs revealed by Paul Dietz' test suite:
4806 ** printing and reading of arrays with some dimensions having
4807 length 0 (thanks to Gerd Moellmann);
4808 ** BOA constructor with &AUX argument without a default value does
4809 not cause a type error;
4810 ** CONSTANTP now returns true for all self-evaluating objects.
4812 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4813 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4814 accessors that are related by inheritance, as specified in the
4815 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4816 Valtteri Vuorikoski)
4817 * The compiler is now able to inline functions that were defined in
4818 a complex lexical environment (e.g. inside a MACROLET).
4819 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4821 * Support for the upcoming FreeBSD-5.0 release has been included.
4822 (thanks to Dag-Erling Smorgrav)
4823 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4824 effect when it is not in a toplevel context.
4825 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4826 stand a better chance of being correct. (thanks to Gerd
4828 * fixed bug in COERCE, which now signals an error on coercing a
4829 rational to a bounded real type which excludes the expected
4831 * The compiler is now able to derive types more accurately from the
4832 COERCE and COMPILE functions.
4833 * fixed bug 223: functional binding is considered to be constant
4834 only for symbols in the CL package.
4835 * fixed bug 231: SETQ did not check the type of a variable being set
4836 (reported by Robert E. Brown)
4837 * A new optimization for MAKE-INSTANCE has been included, fixing
4838 various bugs (including relating to :ALLOCATION :CLASS slots and
4839 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4841 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4842 ** As required by ANSI, LOOP now disallows anonymous collection
4843 clauses such as COLLECT I in conjunction with aggregate boolean
4844 clauses such as THEREIS (= I 1);
4845 ** LOOP now signals an error when any variable is reused in the
4846 same loop (including the potentially useful construct analogous
4847 to WITH A = 1 WITH A = (1+ A);
4848 ** IT is only a special loop symbol within the first clause of a
4849 conditional loop clause;
4850 ** LOOP with a typed iteration variable over a hashtable now
4851 signals a type error iff it should.
4852 * fixed some other bugs revealed by Paul Dietz' test suite:
4853 ** FILE-STREAM now names the class previously known as FD-STREAM;
4854 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4855 argument) no longer signals an error;
4856 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4857 of the slot symbol, rather than using the current package
4858 ((:CONC-NAME "") continues to intern the slot's name in the
4860 * incremented fasl file version number, because of the incompatible
4861 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4862 of the new implementation of DEFINE-COMPILER-MACRO.
4864 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4865 * Support for building SBCL for MIPS platforms running in
4866 little-endian mode has now been checked in, and basic
4867 functionality on said platforms verified.
4868 * minor incompatible change: PCL now records the pathname of a file
4869 in which methods and the like are defined, rather than its
4871 * minor incompatible change: TRUENAME now considers the truename of
4872 a file naming a directory to be the pathname with :DIRECTORY
4873 component indicating that directory.
4874 * minor incompatible change: a NAMED clause in the extended form of
4875 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4876 reason for the previous behaviour is unclear.
4877 * more systematization and improvement of CLOS and MOP conformance
4878 in PCL (thanks to Gerd Moellman and Pierre Mai):
4879 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4881 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4882 primary methods with no specializers;
4883 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4885 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4886 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4887 FORWARD-REFERENCED-CLASSes; error reporting on
4888 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4890 ** SXHASH on CLOS instances now uses a slot internal to the
4891 instance to return different numbers on distinct instances,
4892 while preserving the same return value through invocations of
4894 ** DEFMETHOD signals errors when methods with longer incongruent
4895 lambda lists are added to generic functions;
4896 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4897 CLASS, as specified in AMOP;
4898 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4899 on the order returned by the primary method for classes of
4900 class STANDARD-CLASS;
4901 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4902 * fixed some bugs shown by Paul Dietz' test suite:
4903 ** DOLIST puts its body in TAGBODY;
4904 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4906 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4907 value producing form;
4908 ** if more variables are given to PROGV than values, extra
4909 variables are bound and made to have no value;
4910 ** NSUBSTITUTE on list arguments gets the right answer with
4912 ** ELT signals an error of type TYPE-ERROR when the index argument
4913 is not a valid sequence index;
4914 ** LOOP signals (at macroexpansion time) an error of type
4915 PROGRAM-ERROR when duplicate variable names are found;
4916 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4917 ** FUNCALL of special-operators now cause an error of type
4919 ** PSETQ now works as required in the presence of side-effecting
4920 symbol-macro places;
4921 ** NCONC accepts any object as its last argument;
4922 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4924 ** loop-for-as-package does not require a package to be explicitely
4926 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4928 * fixed bug 166: compiler preserves "there is a way to go"
4929 invariant when deleting code.
4930 * fixed bug 172: macro lambda lists with required arguments after
4931 &REST arguments now cause an error to be signalled. (thanks to
4933 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4934 bug. (thanks to Matthew Danish)
4935 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4937 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4938 arguments are lexically rebound. (thanks to Gerd Moellmann and
4940 * fixed bug 194: error messages are now more informative when there
4941 is no primary method applicable in a call to a generic
4942 function. (thanks to Gerd Moellmann)
4943 * fixed bug in command line argument checking (thanks to Julian
4945 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4946 (thanks to Matthew Danish)
4947 * incremented fasl file version number, because of the
4948 SXHASH-related changes in the layout of CLOS data structures
4950 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4951 * minor incompatible change: The runtime (the Unix executable named
4952 "sbcl") is now much pickier about the .core files it will load.
4953 Essentially it now requires .core files to descend from the same
4954 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4955 as the runtime does. (The intent is to prevent the crashes which
4956 can occur, and which can even be reported as mysterious failures,
4957 when people patch the sources or change the build parameters
4958 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4959 sbcl and .core files.)
4960 * fixed bug: VALUES-LIST is no longer optimized away.
4961 * fixed bug 142: The FFI conversion of C string values to Lisp
4962 string values no longer conses excessively. (thanks to Nathan
4963 Froyd porting Raymond Toy's fix to CMU CL)
4964 * began to systematize and improve MOP conformance in PCL (thanks to
4965 Nathan Froyd, Gerd Moellman and Pierre Mai):
4966 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4968 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4969 ** FINALIZE-INHERITANCE is now called on class finalization;
4970 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4971 argument precedence order.
4972 * fixed bug 202: The compiler no longer fails on functions whose
4973 derived types contradict their declared type.
4974 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4975 so it can be non-toplevel.
4976 * The fasl file version number has changed (because of the new
4977 implementation of DEFMACRO).
4978 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4979 safe code, that any length requirement by their type-specifier
4980 argument is valid. The exceptions to this are described in bug
4982 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4983 functions now check the types of their inputs as required by ANSI.
4984 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4985 introduced symbol is DECLAREd to be SPECIAL.
4986 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4987 * fixed bug: :COUNT argument to sequence functions may be negative
4988 * fixed bug: body of DO-SYMBOLS may contain declarations
4989 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4990 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4991 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4992 symbol macro only once
4993 * fixed printing of call frame when argument list is unavailable
4994 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4995 * compiler no longer signals WARNING on unknown keyword
4998 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4999 * A beta-quality port to the mips architecture running Linux,
5000 based on the old CMUCL backend, has been made. It has been tested
5001 on a big-endian kernel, and works sufficiently well to be able to
5002 rebuild itself; it has not been tested in little-endian mode.
5003 * fixed an inconsistency between gencgc.c and purify.c which made
5004 dumping/loading .core files unreliable
5005 * fixed bug 120a: The compiler now deals correctly with IFs where
5006 the consequent is the same as the alternative, instead of
5007 misderiving the return type. (thanks to Alexey Dejneka)
5008 * fixed bug 113: Logical pathnames are now dumpable (the logical
5009 host is resolved at load-time, throwing an error if it is not
5011 * fixed bug 174: FORMAT's error message is slightly clearer when a
5012 non-printing character is used in a format directive.
5013 * fixed several bugs in compiler checking of type declarations, i.e.
5014 violations of the Python "declarations are assertions" principle
5015 (thanks to Alexey Dejneka)
5016 * fixed several bugs in PCL's error checking (thanks to Gerd
5018 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5020 * fixed bug in compilation of functions as first class values
5021 (thanks to Antonio Martinez-Shotton)
5022 * The compiler's handling TYPE-ERRORs which it can prove will
5023 inevitably happen at runtime has been cleaned up and corrected
5024 in several ways. (thanks to Alexey Dejneka)
5025 * improved argument type checking for various basic arithmetic
5026 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5027 lavished on them in the past that they can be compiled in many
5028 ways in different special cases
5029 * fixed bug 181: compiler checks validity of user supplied type
5031 * cleaned up code flushing in optimization: Function calls which
5032 should signal errors for safety purposes (e.g. which ANSI says
5033 should signal errors when their arguments are of incorrect type)
5034 are no longer optimized away.
5035 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5036 * incremented fasl file version number, because changes in the
5037 implementation of sequence functions like COERCE caused
5038 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5039 in old inline expansions) to become undefined. (Actually these
5040 changes were later undone, so we might very well be binary
5041 compatible with 0.7.7 after all, but leaving the version number
5042 incremented seemed like the simplest and most conservative
5045 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5046 * An alpha-quality port to the parisc architecture running Linux,
5047 based on the old CMUCL backend, has been made. This, even more so
5048 than the other backends, should be considered still a work in
5049 progress; known problems include that the Linux kernel in 64-bit
5050 mode does not propagate the correct sigcontext structure to
5051 userspace, and consequently SBCL on a parisc64 kernel will not
5053 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5054 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5055 suppressed.) Also now that the compiler is looking at declarations
5056 in the environment, it checks optimization declarations as well,
5057 and suppresses inlining when (> DEBUG SPEED).
5058 * More fixes have been made to treatment of floating point exception
5059 treatment and other Unix signals. In particular, floating point
5060 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5061 * The detection and handling of control stack exhaustion (infinite
5062 or very deeply nested recursion) has changed. Stack exhaustion
5063 detection is now done by write-protecting pages at the OS level
5064 and applies at all optimization settings; when found, a
5065 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5066 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5067 be caught using IGNORE-ERRORS.
5068 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5069 correctly when transforming recursive LABELS functions to LETs.
5070 (thanks to Alexey Dejneka)
5071 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5072 that are names of constants or global variables.
5073 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5074 alien routines with docstrings.
5075 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5076 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5078 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5079 (thanks to Eric Marsden)
5080 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5081 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5082 * Bug fix: The SPARC backend can now compile functions involving
5083 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5084 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5085 to a functions expecting a PATHNAME-DESIGNATOR.
5086 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5087 lambda lists. (thanks to Alexey Dejneka)
5088 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5089 functions so that EXPORTing the name of the class doesn't cause
5090 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5091 to Antonio Martinez for reporting this)
5092 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5093 constant-folded without failing an assertion. (thanks to Einar
5094 Floystad Dorum for reporting this)
5095 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5096 types are now dealt with more correctly by the compiler.
5097 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5098 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5099 behaviour analogous to RENAME-FILE. This puts its behaviour more
5100 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5102 * The fasl file version number has changed again. (because of the
5103 bug fix involving the names of PCL MAKE-INSTANCE functions)
5105 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5106 * bug fix: Floating point exceptions are treated much more
5107 consistently on the x86/Linux and PPC/Linux platforms.
5108 * Array initialization with :INITIAL-ELEMENT is now much faster for
5109 cases when the compiler cannot open code the array creation, but
5110 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5111 array accesses have also seen a speed increase.
5112 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5113 specified. (This was at the root of some bad interactions between
5114 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5116 * bug fix: Internal error arguments for undefined functions are now
5117 computed correctly on the PPC/Linux platform.
5118 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5119 Raymond Toy's patch for CMU CL)
5120 * Support for the Solaris 9 operating environment has been included
5121 (thanks to Daniel Merritt)
5122 * A very ugly but hopefully complete draft of the missing FFI chapter
5123 of the manual has been created by reformatting the corresponding
5124 CMU CL manual chapter into (currently very ugly and incoherent)
5125 DocBook and bringing it up to date for SBCL behavior. Thus, the
5126 manual is now essentially complete, at least by my extreme
5127 once-and-only-once standards, whereby it's acceptable to refer to
5128 the doc strings of SB-EXT functions as the primary documentation.
5129 * The fasl file version number has changed again, due to cleanup of
5130 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5131 is no longer a static symbol.)
5133 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5134 * SBCL now builds with OpenMCL (version 0.12) as the
5135 cross-compilation host; also, more progress has been made toward
5136 bootstrapping under CLISP.
5137 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5139 * bug 158 fixed: The compiler can now deal with integer loop
5140 increments different from 1; fixing this turned out also to fix
5142 * bug 169 fixed: no more bogus warnings about using lexical bindings
5143 despite the presence of perfectly good SPECIAL declarations (thanks
5144 to David Lichteblau)
5145 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5146 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5147 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5149 * bug 180 fixed: Method combination specifications no longer ignore
5150 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5151 * bug fix: Structure type predicate functions now check their argument
5152 count as they should.
5153 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5154 correctly. (thanks to Pierre Mai)
5155 * minor incompatible change: The --noprogrammer option is deprecated
5156 in favor of the new --disable-debugger option, which is very similar.
5157 (The major difference is that it takes effect at a slightly different
5158 time at startup, causing handling of errors in --sysinit and
5159 --userinit files will be affected differently.) The
5160 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5161 been added to allow this functionality to be controlled from ordinary
5162 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5163 maintainers, who might want to run non-interactive scripts to
5164 build SBCL cores which will later be used interactively.)
5165 * minor incompatible change: The LOAD function no longer, when given
5166 a wild pathname to load, loads all files matching that pathname.
5167 Instead, an error of type FILE-ERROR is signalled.
5169 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5170 * bug 147 fixed: The compiler preserves its block link/count
5171 invariants more correctly now so that it doesn't crash. (thanks
5173 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5175 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5176 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5177 no-value-for-this-character as NIL (as specified by ANSI).
5178 * HOST-NAMESTRING on physical pathnames now returns a string that is
5179 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5180 (thanks to Christophe Rhodes)
5181 * The Alpha port handles icache flushing more correctly. (thanks to
5183 * More progress has been made toward bootstrapping under CLISP. (thanks
5184 to Christophe Rhodes)
5185 * The fasl file format has changed again, because dynamic loading
5186 on OpenBSD (which has non-ELF object files) motivated some cleanups
5187 in the way that foreign symbols are transformed and passed around.
5188 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5189 is no longer treated as whitespace by the reader, but instead as
5190 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5191 |A
\7fB|, instead of A as it used to.
5193 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5194 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5195 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5196 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5197 this as of 0.7.1.45, but was left out of the previous news section
5198 (thanks to Dan Barlow)
5199 * SBCL now runs on the Solaris operating system on SPARC architectures
5200 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5201 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5202 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5203 * SPARC backend cleanups, allowing builds of cores optimized for V8
5204 and V9 SPARCS, and also emission of code targeted to a particular
5205 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5207 * SBCL is closer to bootstrapping under CLISP, thanks to various
5208 fixes by Christophe Rhodes.
5209 * The fasl file format has changed again, to allow the compiler's
5210 INFO database to support symbol macros.
5211 * The user manual (in doc/) is formatted into HTML more nicely.
5212 (thanks to coreythomas)
5213 * The system is smarter about SUBTYPEP relationships, especially
5214 those involving NOT types (including types such as ATOM which are
5215 represented internally using NOT types). Thus SUBTYPEP is less
5216 likely to return (VALUES NIL NIL) in general, and in particular
5217 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5219 * The fasl file format has changed again, because the internal
5220 representation of types now includes a new slot to support the new
5221 SUBTYPEP-of-NOT-types logic.
5222 * (not a change in the main branch of SBCL, but a related prototype
5223 which can hopefully be merged into the main branch of SBCL in the
5224 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5225 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5226 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5227 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5228 dispatch macro character combinations. (thanks to Alexey Dejneka)
5229 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5230 that superficially look like logical namestrings correctly.
5231 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5233 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5234 default supplied-p) for &optional and &key arguments. (thanks to
5237 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5238 * incompatible change: The compiler is now less aggressive about
5239 tail call optimization, doing it only when (> SPACE DEBUG) or
5240 (> SPEED DEBUG). (This is an incompatible change because there are
5241 programs which relied on the old CMU-CL-style behavior to optimize
5242 away their unbounded recursion which will now die of stack overflow.)
5243 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5244 for non-GENCGC systems has been increased to 20M (since that
5245 seems much closer to the likely performance optimum for modern
5246 systems than the old 4M value was)
5247 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5248 and *DEBUG-PRINT-LEVEL*
5249 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5250 of CMU CL's support for SPARC, and various endianness and other
5251 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5252 * new syntactic sugar for the Unix command line: --load foo.bar is now
5253 an alternate notation for --eval '(load "foo.bar")'.
5255 ** The system now detects stack overflow and handles it gracefully,
5256 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5257 optimization settings. (This is a good thing in general, and
5258 its introduction in this version should be particularly timely
5259 for anyone whose code fails because of suppression of tail
5261 ** The system now hunts for the C variable "environ" in a more
5262 devious way, to avoid segfaults when the C library version differs
5263 between compile time and run time. (thanks to Christophe Rhodes)
5264 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5265 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5266 ** The compiler no longer issues bogus style warnings for undefined
5267 classes in the same source file as the DEFCLASSes which defined
5268 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5270 ** fixes in CONDITION class precedence list for undefined function
5271 errors (thanks to Alexei Dejneka)
5272 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5273 correctly. (thanks to Dan Barlow)
5274 ** portability fixes aiming at bootstrapping under CLISP (thanks
5275 to Dave McDonald and Christophe Rhodes)
5276 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5277 ** fixes in type translation and and type inference (thanks to
5279 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5280 ** various fixes in the new ports (thanks to Dan Barlow)
5281 * several changes related to debugging:
5282 ** suppression of tail recursion, as noted above
5283 ** stack overflow detection, as noted above
5284 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5285 is now the default. (For some time encapsulation has been more
5286 reliable than the breakpoint-based :ENCAPSULATE NIL
5287 implementation, at least on X86 systems; and I just noticed that
5288 encapsulation also seems closer to the spirit of the ANSI
5291 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5293 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5294 up properly again. (There was a packaging bug in 0.7.0 which
5295 left their definitions in SB-SYS::LOAD-FOREIGN and
5296 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5297 vital for most things which interface to C-level interfaces,
5298 like extensions working with sockets or databases or
5299 Perl-compatible regexes or whatever, and the need to fix
5300 this bug is the main reason that 0.7.1 was released so
5302 ** DEFGENERIC is now choosier about the methods it redefines, so that
5303 reLOADing a previously-LOADed file containing DEFGENERICs does
5304 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5305 cycle now works as it should. (thanks to Alexey Dejneka)
5306 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5307 fixed by Christophe Rhodes. (He actually submitted this patch
5308 months ago, and I delayed until after 0.7.0.)
5309 ** Bug 111 (internal compiler confusion about runtime checks on
5310 FUNCTION types) was fixed by Alexey Dejneka.
5311 * Some internal cleanups (getting rid of variables which aren't
5312 needed now that the byte interpreter is gone) caused the fasl
5313 file format number to change again.
5315 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5316 * major incompatible change: The default fasl file extension, i.e. the
5317 default extension for files produced by COMPILE-FILE, has changed
5318 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5320 ** There are many changes in the implementation of the compiler.
5321 SBCL is now essentially a compiler-only implementation of ANSI
5322 Common Lisp. EVAL still "interprets" a few special cases, but
5323 almost all the interesting cases are handled by creating
5324 a LAMBDA expression, calling COMPILE on it, then calling
5325 FUNCALL on the result.
5326 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5327 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5328 Since the code is newer, there might still be some new bugs
5329 (though not as many as before Martin Atzmueller's fixes:-). But
5330 the new code is substantially simpler and clearer, and hopefully
5331 any remaining bugs will be simpler, less fundamental, and more
5332 fixable then the bugs in the old code.
5333 ** The revised compiler is still a little unsteady on its feet.
5335 *** The debugging information it produces (particularly the names
5336 of FUNCTION objects) is sometimes much less useful than what
5337 the old compiler produced.
5338 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5339 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5340 within a MACROLET) has been temporarily weakened.
5341 ** There are new compiler optimizations for various functions:
5342 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5343 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5344 *** the math functions TRUNCATE, FLOOR, and CEILING
5345 *** the function-of-all-trades COERCE
5346 Mostly these should be transparent, but there's one
5347 potentially-annoying problem (bug 117): when the compiler
5348 inline-expands a function and does type analysis on the result,
5349 it can create control paths which have type mismatches, and
5350 when it can't prove that those control paths aren't taken,
5351 it will issue WARNINGs about the type mismatches. This is
5352 a particular problem in practice for the new sequence functions.
5353 It's not clear how this should be fixed, and for now, a
5354 workaround is given in the entry for 117 in the BUGS file.
5355 ** (Because of the interaction between the two previous items --
5356 occasional inlining problems and new inline expansions -- some
5357 of the new sequence function optimizations won't really kick in
5358 completely until debugging information, and then inlining, are
5359 straightened out in some future version.)
5360 * minor incompatible changes:
5361 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5362 DIRECTORY no longer implicitly promotes NIL slots of its
5363 pathname argument to :WILD. In particular, when you ask for the
5364 contents of a directory (which you used to be able to do without
5365 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5366 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5367 ** changes in behavior that ANSI explicitly defines to be
5368 implementation dependent:
5369 *** The new compiler-only implementation still conforms with ANSI,
5370 but acts a little different than before. Besides the obvious
5371 changes in performance tradeoffs (that the cost per form passed
5372 to EVAL has gone up, and the cost per form executed by EVAL
5373 has gone down), the behavior of the system changes a little
5374 because there are no longer any interpreted function objects.
5375 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5376 e.g. doing COMPILE on the output of interactive DEFUN is
5378 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5380 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5381 has changed from (:CL) to NIL.
5382 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5383 e.g. #\Newline and #\Tab, don't have names specified in the
5384 ANSI Common Lisp standard, is now based on their ASCII symbolic
5385 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5386 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5387 are no longer used for output.
5388 ** changes in internal implementation constants:
5389 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5390 4 million. (If your application spends a lot of time GCing and
5391 you have a lot of RAM, you might want to experiment with
5392 increasing it even more.)
5393 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5394 However, almost all old code should still continue to work without
5395 immediate update, as SB-C-CALL is now a (deprecated) nickname
5397 ** Old operator names in the style DEF-FOO are now deprecated in
5398 favor of new corresponding names DEFINE-FOO, for consistency with
5399 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5400 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5401 internal symbols, but a few supported extensions like
5402 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5403 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5404 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5405 etc. as you get deeper into recursive calls to the debugger
5406 command loop, instead of the old "5]", "5]]", "5]]]"
5407 sequence. (I was motivated to do this when squabbles between
5408 ILISP and SBCL left me very deeply nested in the debugger. In the
5409 short term, this change will probably provoke more ILISP/SBCL
5410 squabbles, but hopefully it will be an improvement in the long run.)
5411 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5412 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5413 function, since declaiming return types involving aliens is
5414 (1) annoyingly messy to do by hand and (2) vital to efficient
5415 compilation of code which calls such functions.
5416 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5417 longer reexported by the SB-EXT package. They're solely useful
5418 for alien code, so it seems more logical that you should get
5419 them from the SB-ALIEN package, not in SB-EXT.
5420 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5421 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5422 features. Instead, the code that they used to control is always
5423 built into the system.
5424 * many other bug fixes
5425 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5426 advantage of the new EVAL-WHEN stuff and to clean them up in
5427 general, and they are now more ANSI-compliant in a number of
5428 ways. Martin Atzmueller is responsible for a lot of this.
5429 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5431 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5432 *** correct ERROR type for various file operations
5433 *** some fixes for Lisp streams
5434 *** DEFMETHOD syntax checking
5435 *** changing old weird representation of debug information as
5436 strings (which, among their other deficiencies, don't transform
5437 correctly when you rename packages, and don't change their
5438 print representation when you change things like *PACKAGE*
5439 and *PRINT-LENGTH*) to symbols and lists of symbols
5440 He also made several improvements and fixed several bugs in DESCRIBE.
5441 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5443 *** misbehavior of WRITE-STRING/WRITE-LINE
5444 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5445 and several other LOOP problems as well
5446 *** DIRECTORY when similar filenames are present
5447 *** DEFGENERIC with :METHOD options
5448 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5449 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5450 *** argument ordering in FIND with :TEST option
5451 *** mishandled package designator argument in APROPOS-LIST
5452 *** various problems in the backquote readmacro
5453 *** a bug in APROPOS
5454 *** probably some others that I'm not describing very well here,
5455 since the CVS log documents them by reference to sbcl-devel
5456 messages, and the SourceForge archives aren't working well.:-(
5457 ** Dan Barlow improved the Alpha port (and is making progress on the
5458 PPC port, for those of you who think different).
5459 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5460 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5461 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5462 continues to work on the SPARC port (for those of you in a position
5463 to look down upon our little PC-compatible boxes from a great height).
5464 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5465 and uses that copy, rather than the current dynamic value, when
5466 it's trying to decide whether to truncate output. Thus e.g.
5467 (let ((*print-lines* 50))
5468 (pprint-logical-block (stream nil)
5470 (let ((*print-lines* 8))
5471 (print (aref possiblybigthings i) stream)))))
5472 should now truncate the logical block only at 50 lines, instead of
5473 often truncating it at 8 lines, as it did before.
5474 * The doc/cmucl/ directory, containing old CMU CL documentation
5475 from the time of the fork, is no longer part of the base system.
5476 SourceForge has shut down its anonymous FTP service, and with it
5477 my original plan for distributing the old CMU CL documentation
5478 there. For now, if you need these files you can download an old
5479 SBCL source release and extract them from it.
5480 * The fasl file version number changed again, for dozens of reasons,
5481 some of which are apparent above.
5483 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5484 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5485 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5486 patch, so that DISASSEMBLE output is much nicer.
5487 * The code in the SB-PROFILE package now seems reasonably stable.
5488 I still haven't decided what the final interface should look like
5489 (I'd like PROFILE to interact cleanly with TRACE, since both
5490 facilities use function encapsulation) but if you have a need
5491 for profiling now, you can probably use it successfully with
5492 the current CMU-CL-style interface.
5493 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5494 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5495 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5496 link now returns the dangling link itself, and for similar
5497 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5498 link itself. (In these cases the old code signalled an error and
5499 looped endlessly, respectively.) Thus, DIRECTORY now works even
5500 in the presence of dangling and cyclic symbolic links.
5501 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5502 is now a supported extension again, since the consensus on
5503 sbcl-devel was that it can be useful for ordinary development
5504 work, not just for debugging SBCL itself.
5505 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5506 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5507 that currently-defined functions might be redefined later with
5508 different return types.
5509 * Hash tables can be printed readably, as inspired by CMU CL code
5510 of Eric Marsden and SBCL code of Martin Atzmueller.
5511 * better error handling in CLOS method combination, thanks to
5512 Martin Atzmueller porting Pierre Mai's CMU CL patches
5513 * more overflow fixes for >16Mbyte I/O buffers
5514 * A bug in READ has been fixed, so that now a single Ctrl-D
5515 character suffices to cause end-of-file on character streams.
5516 In particular, now you only need one Ctrl-D at the command
5517 line (not two) to exit SBCL.
5518 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5520 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5521 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5522 does the right thing.
5523 * The implementation of some type tests, especially for CONDITION
5524 types, is now tidier and maybe faster, due to CMU CL code
5525 originally by Douglas Crosher, ported by Martin Atzmueller.
5526 * Some math functions have been fixed, and there are new
5527 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5528 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5529 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5530 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5531 likely to be built into sbcl-0.7.0.)
5532 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5533 CL, ported to SBCL by Martin Atzmueller)
5534 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5535 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5536 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5537 * There's a new slam.sh hack to shorten the edit/compile/debug
5538 cycle for low-level changes to SBCL itself, and a new
5539 :SB-AFTER-XC-CORE target feature to control the generation of
5540 the after-xc.core file needed by slam.sh.
5541 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5542 COMPILE-FILE is no longer supported, so that now every function
5543 gets an entry point, so that block compilation looks a little
5544 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5545 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5546 returns the number of bytes consed since the system started,
5547 rather than the number consed since the first time the function
5548 was called. (The new definition parallels ANSI functions like
5549 CL:GET-INTERNAL-RUN-TIME.)
5550 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5551 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5552 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5553 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5554 * Fasl file version numbers are now independent of the target CPU,
5555 since historically most system changes which required version
5556 number changes have affected all CPUs equally. Similarly,
5557 the byte fasl file version is now equal to the ordinary
5560 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5561 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5562 is no longer recognized. I apologize for this, because it was
5563 listed in SB-EXT as a supported extension, but I found that
5564 its existing behavior was poorly specified, as well as incorrectly
5565 specified, and it looked like too much of a mess to straighten it
5566 out. I have enough on my hands trying to get ANSI stuff to work..
5567 * many patches ported from CMU CL by Martin Atzmueller, with
5568 half a dozen bug fixes in pretty-printing and the debugger, and
5569 half a dozen others elsewhere
5570 * fixed bug 13: Floating point infinities are now supported again.
5571 They might still be a little bit flaky, but thanks to bug reports
5572 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5573 as flaky as they were.
5574 * The --noprogrammer command line option is now supported. (Its
5575 behavior is slightly different in detail from what the old man
5576 page claimed it would do, but it's still appropriate under the
5577 same circumstances that the man page talks about.)
5578 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5579 are now supported, and enabled by default. Thus, the compiler can
5580 handle many floating point and complex operations much less
5581 inefficiently. (Thus e.g. you can implement a complex FFT
5583 * The compiler now detects type mismatches between DECLAIM FTYPE
5584 and DEFUN better, and implements CHECK-TYPE more correctly, and
5585 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5586 thanks to patches from Martin Atzmueller.
5587 * various fixes to make the cross-compiler more portable to
5588 ANSI-conforming-but-different cross-compilation hosts (notably
5589 Lispworks for Windows, following bug reports from Arthur Lemmens)
5590 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5591 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5592 fixed thanks to Pierre Mai's CMU CL patches.
5593 * fixes to keep the system from overflowing internal counters when
5594 it tries to use i/o buffers larger than 16M bytes
5595 * fixed bug 45a: Various internal functions required to support
5596 complex special functions have been merged from CMU CL sources.
5597 (When I was first setting up SBCL, I misunderstood a compile-time
5598 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5599 * improved support for type intersection and union, fixing bug 12
5600 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5601 more obscure bugs as well
5602 * some steps toward byte-compiling non-performance-critical
5603 parts of the system, courtesy of patches from Martin Atzmueller
5604 * Christophe Rhodes has made some debian packages of sbcl at
5605 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5606 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5607 stable, but are nonetheless usable. When he's ready, I'd be happy
5608 to add them to the SourceForge "File Releases" section. (And if
5609 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5610 * new fasl file format version number (because of changes in
5611 internal representation of (OR ..) types to accommodate the new
5612 support for (AND ..) types, among other things)
5614 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5615 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5617 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5619 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5620 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5621 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5622 * DESCRIBE now works on structure objects again.
5623 * Most function call argument type mismatches are now handled as
5624 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5625 know whether the function will be redefined before the call is
5626 executed. (The compiler could flag local calls with full WARNINGs,
5627 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5628 it doesn't keep track of enough information to know whether calls
5629 are local in this sense.)
5630 * Compiler output is now more verbose, with messages truncated
5631 later than before. (There should be some supported way for users
5632 to override the default verbosity, but I haven't decided how to
5633 provide it yet, so this behavior is still controlled by the internal
5634 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5635 src/compiler/ir1util.lisp.)
5636 * Fasl file format version numbers have increased again, because
5637 support for the Gray streams extension changes the layout of the
5638 system's STREAM objects.
5639 * The Gray subclassable streams extension now works, thanks to a
5640 patch from Martin Atzmueller.
5641 * The full LOAD-FOREIGN extension (not just the primitive
5642 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5643 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5644 but like most other programs, it defaults to copying the Unix
5645 environment from the original process instead of starting the
5646 new process in an empty environment.
5647 * Extensions which manipulate the Unix environment now support
5648 an :ENVIRONMENT keyword option which doesn't smash case or
5649 do other bad things. The CMU-CL-style :ENV option is retained
5650 for porting convenience.
5651 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5652 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5654 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5656 * A patch from Martin Atzmueller seems to have solved the SIGINT
5657 problem, and as far as we know, signal-handling now works cleanly.
5658 (If you find any new bugs, please report them!)
5659 * The system no longer defaults Lisp source file names to types
5660 ".l", ".cl", or ".lsp", but only to ".lisp".
5661 * The compiler no longer uses special default file extensions for
5662 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5663 seems to expect a single default extension for all compiled code,
5664 and there's no compelling reason to try to stretch the standard
5665 to allow two different extensions.) Instead, byte-compiled files
5666 default to the same extension as native-compiled files.
5667 * Fasl file format version numbers have increased again, because
5668 a rearrangement of internal implementation packages made some
5669 dumped symbols in old fasl files unreadable in new cores.
5670 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5671 many fewer weird special cases.
5672 * Bug #17 (differing COMPILE-FILE behavior between logical and
5673 physical pathnames) has been fixed, and some related misbehavior too,
5674 thanks to a patch from Martin Atzmueller.
5675 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5676 by Tim Moore, ported to SBCL by Martin Atzmueller.
5677 * Martin Atzmueller fixed several filesystem-related problems,
5678 including bug #36, in part by porting CMU CL patches, which were
5679 written in part by Paul Werkowski.
5680 * More compiler warnings in src/runtime/ are gone, thanks to
5681 more patches from Martin Atzmueller.
5682 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5685 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5687 * DESCRIBE now works on CONDITION objects.
5688 * The debugger now handles errors which arise when trying to print
5689 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5691 * The build system now uses an additional file, customize-target-features.lisp,
5692 to allow local modifications to the target *FEATURES* list. (The point of
5693 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5694 debugging features enabled, without having to worry about propagating it
5695 into everyone's system when I do a "cvs update".) When no
5696 customize-target-features.lisp file exists, the target *FEATURES* list
5697 should be constructed the same way as before.
5698 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5699 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5700 warn about behavior which is undefined under the ANSI spec. Note: This
5701 is specified by ANSI, but it's not very popular with programmers.
5702 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5703 macro in the SBCL sources for an example of a workaround which you
5704 might use to make portable ANSI-standard code which does what you want.
5705 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5706 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5707 when it's used as a non-toplevel form. (This is required in order
5708 to implement the DEFCONSTANT-EQX macro.)
5709 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5710 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5711 funny things, due to bugs in the implementation of EVAL-WHEN
5712 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5713 non-toplevel DEFCONSTANTs are uncommon.)
5714 * The core file version number and fasl file version number have been
5715 incremented, because the old noncompliant DEFCONSTANT behavior involved
5716 calling functions which no longer exist, and because I also took the
5717 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5718 * fixed bug 1 (error handling before read-eval-print loop starts), and
5719 redid debugger restarts and related debugger commands somewhat while
5721 ** The QUIT debugger command is gone, since it did something
5722 rather different than the SB-EXT:QUIT command, and since it never
5723 worked properly outside the main toplevel read/eval/print loop.
5724 Invoking the new TOPLEVEL restart provides the same functionality.
5725 ** The GO debugger command is also gone, since you can just invoke
5726 the CONTINUE restart directly instead.
5727 ** The TOP debugger command is also gone, since it's redundant with the
5728 FRAME 0 command, and since it interfered with abbreviations for the
5730 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5732 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5733 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5734 some porting work by Martin Atzmueller)
5735 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5736 with a boatload of patches which he ported to SBCL. Now that those
5738 ** The system tries to make sure that its low-priority messages
5739 are prefixed by semicolons, to help people who like to use
5740 syntax highlighting in their ILISP buffer. (This patch
5741 was originally due to Raymond Toy.)
5742 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5743 patches originally written by Raymond Toy.
5744 ** The compiler understands coercion between single-value and
5745 multiple-VALUES type expressions better, getting rid of some very
5746 weird behavior, thanks to patches originally by Robert MacLachlan
5747 and Douglas Crosher.
5748 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5749 lambda lists, thanks to a patch originally by Pierre Mai.
5750 ** The system no longer bogusly warns about "abbreviated type
5752 ** The compiler gets less confused by inlining and RETURN-FROM,
5753 thanks to some patches originally by Tim Moore.
5754 ** The system no longer hangs when dumping circular lists to fasl
5755 files, thanks to a patch originally from Douglas Crosher.
5756 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5757 undefined function error.
5758 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5759 in structure slot initforms) for now, documented workaround instead:-|
5760 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5761 * fixed bug 5: added stubs for various Gray stream functions called
5762 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5763 installed, at least appropriate type errors are generated
5764 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5765 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5766 consistently in DEFMETHOD forms.
5767 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5768 it doesn't seem to affect SBCL after all
5769 * The C runtime system now builds with better optimization and many
5770 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5772 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5774 * The system is now under CVS at SourceForge (instead of the
5775 CVS repository on my home machine).
5776 * The new signal handling code has been tweaked to treat register
5777 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5778 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5779 downstream, e.g. in debug-int.lisp, has implicit dependencies
5780 on the unsignedness of integer representation of machine words,
5781 and that caused the system to bomb out with infinite regress
5782 when trying to recover from type errors involving signed values,
5783 e.g. (BUTLAST '(1 2 3) -1).)
5784 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5785 (This was one of the bugs Peter Van Eynde reported back in July.)
5786 * The system now uses code inspired by Colin Walters' O(N)
5787 implementation of MAP (from the cmucl-imp@cons.org mailing
5788 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5789 inline the MAP operation, and there is more than one
5790 sequence argument to the MAP call (so that it can't just
5791 do ETYPECASE once and for all based on the type of the
5792 single sequence argument). (The old non-inline implementation
5793 of the general M-argument sequence-of-length-N case required
5794 O(M*N*N) time when any of the sequence arguments were LISTs.)
5795 * The QUIT :UNIX-CODE keyword argument has been renamed to
5796 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5797 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5799 * Raymond Wiker's patches to port dynamic loading from Linux to
5800 FreeBSD have been added.
5801 * The BUGS file is now more nearly up to date, thanks in large part
5802 to Martin Atzmueller's review of it.
5803 * The debugger now flushes standard output streams before it begins
5804 its output ("debugger invoked" and so forth).
5805 * The core version number and fasl file version number have both
5806 been incremented, because of incompatible changes in the layout
5808 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5809 used to not be called for a saved Lisp image.)
5810 * Martin Atzmueller's version of a patch to fix a compiler crash,
5811 as posted on sbcl-devel 13 September 2000, has been installed.
5812 * Instead of installing Martin Atzmueller's patch for the
5813 compiler transform for SUBSEQ, I deleted the compiler transform,
5814 and transforms for some similar consing operations.
5815 * A bug in signal handling which kept TRACE from working on OpenBSD
5817 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5818 away by constant folding
5819 * The system now defines its address space constants in one place
5820 (in the Lisp sources), and propagates them automatically elsewhere
5821 (through GENESIS and the sbcl.h file). Therefore, patching the
5822 address map is less unnecessarily tedious and error-prone. The
5823 Lisp names of address space constants have also been systematized.
5824 * CVS tags like dollar-Header-dollar have been removed from
5825 the sources, because they have never saved me trouble and
5826 they've been source of trouble working with patches and other
5827 diff-related operations.
5828 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5829 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5831 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5833 * The system has been ported to OpenBSD.
5834 * The system now compiles with a simple "sh make.sh" on the systems
5835 that it's supported on. I.e., now you no longer need to tweak
5836 text in the target-features.lisp-expr and symlinks in src/runtime/
5837 by hand, the make.sh takes care of it for you.
5838 * The system is no longer so grossly inefficient when compiling code
5839 involving vectors implemented as general (not simple) vectors (VECTOR T),
5840 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5841 which dares to use the various sequence functions on non-simple
5842 vectors, takes less of a performance hit.
5843 * There is now a primitive type predicate VECTOR-T-P
5844 to test for the (VECTOR T) type, so that e.g.
5845 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5846 can now be compiled with some semblance of efficiency. (The old code
5847 turned the type declaration into a full call to %TYPEP at runtime!)
5848 * AREF on (VECTOR T) is still not fast, since it's still compiled
5849 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5850 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5851 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5852 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5853 without making full calls to SUBTYPEP at runtime.
5854 (Some analogous efficiency issues for non-simple vectors specialized to
5855 element types other than T, or for non-simple multidimensional arrays,
5856 have not been addressed. They could almost certainly be handled the
5857 same way if anyone is motivated to do so.)
5858 * The changes in array handling break binary compatibility, so
5859 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5860 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5861 instead of (VALUES T T).
5862 * By following the instructions that Dan Barlow posted to sbcl-devel
5863 on 2 July 2000, I was able to enable primitive dynamic object
5864 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5865 functionality is not implemented (since it calls ld to resolve
5866 library references automatically, requiring RUN-PROGRAM for its
5867 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5868 try to resolve library references) is now supported.
5869 * The system now flushes the standard output streams when it terminates,
5870 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5871 them at several other probably-convenient times, e.g. in each pass of
5872 the toplevel read-eval-print loop, and after evaluating a form given
5873 as an "--eval" command-line option. (These changes were motivated by a
5874 discussion of stream flushing issues on cmucl-imp in August 2000.)
5875 * The source transform for TYPEP of array types no longer assumes
5876 that an array whose element type is a not-yet-defined type
5877 is implemented as an array of T, but instead punts, so that the
5878 type will be interpreted at runtime.
5879 * There is now some support for cross-compiling in make.sh: each of
5880 the phases of make.sh has its own script. (This should be transparent
5881 to people doing ordinary, non-cross-compile builds.)
5882 * Since my laptop doesn't have hundreds of megabytes of memory like
5883 my desktop machine, I became more motivated to do some items on
5884 my to-do list in order to reduce the size of the system a little:
5885 ** Arrange for various needed-only-at-cold-init things to be
5886 uninterned after cold init. To support this, those things have
5887 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5888 symbols with such names are now uninterned after cold init).
5889 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5890 fasl files for cold load.
5891 ** Remove the old compiler structure pooling code (which used to
5892 be conditional on the target feature :SB-ALLOC) completely.
5893 ** Redo the representation of some data in cold init to be more compact.
5894 (I also looked into supporting byte compiled code at bootstrap time,
5895 which would probably reduce the size of the system a lot, but that
5896 looked too complicated, so I punted for now.)
5897 * The maximum signal nesting depth in the src/runtime/ support code has
5898 been reduced from 4096 to 256. (I don't know any reason for the very
5899 large old value. If the new smaller value turns out to break something,
5900 I'll probably just bump it back up.)
5901 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5903 * Many, many bugs reported by Peter Van Eynde have been added to
5904 the BUGS list; some have even been fixed.
5905 * While enabling dynamic object file loading, I tried to make the
5906 code easier to understand, renaming various functions and variables
5907 with less ambiguous names, and changing some function calling
5908 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5909 * While trying to figure out how to do the OpenBSD port, I tried to
5910 clean up some of the code in src/runtime/. In particular, I dropped
5911 support for non-POSIX signal handling, added various comments,
5912 tweaked the code to reduce the number of compilation warnings, and
5913 renamed some files to increase consistency.
5914 * To support the new automatic configuration functionality in make.sh,
5915 the source file target-features.lisp-expr has been replaced with the
5916 source file base-target-features.lisp-expr and the machine-generated
5917 file local-target-features.lisp-expr.
5918 * fixed a stupid quoting error in make.sh so that using CMU CL
5919 "lisp -batch" as cross-compilation host works again
5921 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5923 * DESCRIBE no longer tries to call itself recursively to describe
5924 bound/fbound values, so that it no longer fails on symbols which are
5925 bound to themselves (like keywords, T, and NIL).
5926 * DESCRIBE now works on generic functions.
5927 * The printer now prints less-screwed-up representations of closures
5928 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5929 * A private symbol is used instead of the :EMPTY keyword previously
5930 used to mark empty slots in hash tables. Thus
5931 (DEFVAR *HT* (MAKE-HASH-TABLE))
5932 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5933 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5934 now does what ANSI says that it should. (You can still get
5935 similar noncompliant behavior if bang on the hash table
5936 implementation with all the symbols you get back from
5937 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5938 This breaks binary compatibility, since tests for equality to
5939 :EMPTY are wired into things like the macroexpansion of
5940 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5942 * There's now a minimal placeholder implementation for CL:STEP,
5943 as required by ANSI.
5944 * An obscure bug in the interaction of the normal compiler, the byte
5945 compiler, inlining, and structure predicates has been patched
5946 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5947 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5949 * Missing ordinary arguments in a macro call are now detected even
5950 when the macro lambda list contains &KEY or &REST.
5951 * The debugger no longer complains about encountering the top of the
5952 stack when you type "FRAME 0" to explicitly instruct it to go to
5953 the top of the stack. And it now prints the frame you request even
5954 if it's the current frame (instead of saying "You are here.").
5955 * As specified by ANSI, the system now always prints keywords
5956 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5958 * The default initial SIZE of HASH-TABLEs is now smaller.
5959 * Type information from CLOS class dispatch is now propagated
5960 into DEFMETHOD bodies, so that e.g.
5961 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5963 is now basically equivalent to
5964 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5965 (DECLARE (TYPE SINGLE-FLOAT X))
5967 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5968 operation, without having to do run-time type dispatch.
5969 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5970 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5971 * Since I don't seem to be making big file reorganizations very often
5972 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5973 is overflowing my ability to conveniently back them up), I've finally
5974 checked the system into CVS. (The CVS repository is on my home system,
5975 not at SourceForge -- putting it on SourceForge might come later.)
5976 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5977 high-level GC-NOTIFY-FOO functions send their output. (There's
5978 still very little control of where low-level verbose GC functions
5979 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5980 less than it used to -- the GC-NOTIFY-FOO functions are now under
5981 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5982 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5983 in only one place in the source code, and propagates it automatically
5984 everywhere that it's needed. Thus e.g. when I bump the version from
5985 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5986 * The C source files now include boilerplate legalese and documentation
5987 at the head of each file (just as the Lisp source files already did).
5988 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5989 to his page will be replaced with a link to his new CLiki service.
5991 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5993 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5994 * The build process now looks for GNU make under the default name "gmake",
5995 instead of "make" as it used to. If GNU make is not available as "gmake"
5996 on your system, you can change this default behavior by setting the
5997 GNUMAKE environment variable.
5998 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5999 can build without error under CMU CL.
6001 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6003 * There is now a partial SBCL user manual (with some new text and some
6004 text cribbed from the CMU CL manual).
6005 * The beginnings of a profiler have been added (starting with the
6006 CMU CL profiler and simplifying and cleaning up). Eventually the
6007 main interface should be through the TRACE macro, but for now,
6008 it's still accessed through vaguely CMU-CL-style functions and macros
6009 exported from the package SB-PROFILE.
6010 * Some problems left over from porting CMU CL to the new
6011 cross-compilation bootstrap process have been cleaned up:
6012 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6013 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6014 part when getting rid of the compiler *BACKEND* stuff.)
6015 ** The value of *NULL-TYPE* was screwed up, because it was
6016 being initialized before the type system knew the final
6017 definition of the 'NULL type. This screwed up several key
6018 optimizations in the compiler, causing inefficiency in all sorts
6019 of places. (I found it because I wanted to understand why
6020 GET-INTERNAL-RUN-TIME was consing.)
6021 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6022 PROCLAIM FTYPE information. Unfortunately this broke binary
6023 compatibility again, since now the forms output by DEFGENERIC
6024 to refer to functions which didn't exist in 0.6.3.
6025 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6026 can use the new (as of 0.6.3) transform for SOME into MAP into
6028 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6029 values to (INTEGER 0 1000000), so that the time code will no longer
6030 occasionally get blown up by Linux returning 1000000 microseconds
6031 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6032 its output conform to the ANSI spec. (Alas, this makes its output
6033 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6034 * A full call to MAP NIL with a single sequence argument no longer conses.
6035 * fixes to problems pointed out by Martin Atzmueller:
6036 * The manual page no longer talks about multiprocessing as though
6037 it were currently supported.
6038 * The ILISP support patches have been removed from the distribution,
6039 because as of version 5.10.1, ILISP now supports SBCL without us
6040 having to maintain patches.
6041 * added a modified version of Raymond Toy's recent CMU CL patch for
6042 EQUALP comparison of HASH-TABLE
6044 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6046 * The system still can't cross-compile itself with
6047 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6048 entails), but at least it can compile more of itself that way
6049 than it used to be able to, and various buglets which were uncovered
6050 by trying to cross-compile itself that way have now been fixed.
6051 * This release breaks binary compatibility again. This time
6052 at least I've incremented the FASL file format version to 2, so that the
6053 problem can be detected reliably instead of just causing weird errors.
6054 * various new style warnings:
6055 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6056 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6057 ** using the lexical binding of a variable named in the *FOO* style
6058 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6059 as specified by ANSI.
6060 * *RANDOM-STATE* is no longer automatically initialized from
6061 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6062 default behavior of the system is to repeat its behavior every time
6063 it's run. If you'd like to change this behavior, you can always
6064 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6065 old convention there was no comparably easy way to get the system to
6066 repeat its behavior every time it was run.
6067 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6068 FTYPE declarations has been removed, in favor of their ANSI
6069 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6070 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6071 the types of their sequence arguments can be determined at compile time.
6072 This is done through a new open code expansion for MAP which eliminates
6073 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6074 argument types can be determined at compile time.
6075 * The optimizer now transforms COERCE into an identity operation when it
6076 can prove that the coerced object is already of the correct type. (This
6077 can be a win for machine generated code, including the output of other
6078 optimization transforms, such as the MAP transform above.)
6079 * Credit information has been moved from source file headers into CREDITS.
6080 * Source file headers have been made more standard.
6081 * The CASE macro now compiles without complaining even when it has
6084 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6086 * (Note that the way that the PCL macroexpansions were rewritten
6087 to accommodate the change in DEFGENERIC below breaks binary
6088 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6089 not run under sbcl-0.6.2. Once we get out of alpha releases,
6090 i.e. hit release 1.0.0, we'll probably try to maintain binary
6091 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6092 and sbcl-1.4.4. Until then, however, it might be fairly common
6093 for maintenance releases to break binary compatibility.)
6094 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6096 * The reporting of unhandled signals has been changed to print some
6097 explanatory text as well as the report form. (Previously only
6098 the report form was printed.)
6099 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6100 it defines, so that the compiler no longer issues undefined function
6101 warnings for compiled-but-not-yet-loaded generic functions.
6102 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6103 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6104 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6105 section of the ANSI spec are supported.
6106 * The "" nickname for the "KEYWORD" package has been removed.
6107 The reader still handles symbol tokens which begin with a package marker
6108 as keywords, but it doesn't expose its mechanism for doing so in the
6109 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6110 * The system now issues STYLE-WARNINGs for contradictory TYPE
6111 proclamations. (Warnings for contradictory FTYPE proclamations would
6112 be nice too, but those can't be done usefully unless the type system
6113 is made smarter about FUNCTION types.)
6114 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6115 systematized, so that "*target-*.lisp is supposed to exist only on the
6116 target and imply that there's a related file which exists on the
6117 host, and *host-*.lisp is supposed to exist only on the host and imply
6118 that there's a related file which exists on the target. This involves a
6119 lot of renaming. Hopefully the acute confusion caused by the renaming
6120 will be justified by the reduction in chronic confusion..
6121 ** runtime-type.lisp -> early-target-type.lisp
6122 ** target-type.lisp -> late-target-type.lisp
6123 ** early-host-format.lisp -> early-format.lisp
6124 ** late-host-format.lisp -> late-format.lisp
6125 ** host-error.lisp -> misc-error.lisp
6126 ** early-error.lisp -> early-target-error.lisp
6127 ** late-error.lisp -> late-target-error.lisp
6128 ** host-defboot.lisp -> early-defboot.lisp
6129 ** code/misc.lisp -> code/target-misc.lisp
6130 ** code/host-misc.lisp -> code/misc.lisp
6131 ** code/numbers.lisp -> code/target-numbers.lisp
6132 ** code/early-numbers.lisp -> numbers.lisp
6133 ** early-host-type.lisp -> early-type.lisp
6134 ** late-host-type.lisp -> late-type.lisp
6135 ** host-typep.lisp -> typep.lisp
6136 ** load.lisp -> target-load.lisp
6137 ** host-load.lisp -> load.lisp
6138 ** host-disassem.lisp -> disassem.lisp
6139 ** host-insts.lisp -> insts.lisp
6140 ** byte-comp.lisp -> target-byte-comp.lisp
6141 ** host-byte-comp.lisp -> byte-comp.lisp
6142 ** host-signal.lisp -> signal.lisp
6143 ** host-defstruct.lisp -> defstruct.lisp
6144 ** late-target-type.lisp -> deftypes-for-target.lisp
6145 Furthermore, several other previously target-only files foo.lisp (e.g.
6146 hash-table.lisp and random.lisp) have been split into a target-and-host
6147 foo.lisp file and a target-only target-foo.lisp file, with their key type
6148 definitions in the target-and-host part, so that the cross-compiler will
6149 know more about target types.
6150 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6151 gone away. In their place are various *BACKEND-FOO* variables
6152 corresponding to the slots of the old structure.
6153 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6154 into the target SBCL has been fixed.
6155 * The chill.lisp system for loading cold code into a running SBCL
6157 * Support for the CMU CL "scavenger hook" extension has been removed.
6158 (It was undocumented and unused in the CMU CL sources that SBCL was
6159 derived from, and stale in sbcl-0.6.1.)
6160 * Various errors in the cross-compiler type system were detected
6161 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6162 (enabling various consistency checks). Many of them were fixed,
6163 but some hard problems remain, so the compiler is back to
6164 running without *TYPE-SYSTEM-INITIALIZED* for now.
6165 * As part of the cross-compiler type system cleanup, I implemented
6166 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6167 * I have started adding UNCROSS calls throughout the type system
6168 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6169 on cross-compiler input files will be able to go away, and various
6171 * CONSTANTP now returns true for quoted forms (as explicitly required
6174 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6176 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6177 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6178 (MAKE-LIST -1). In the longer term, it ought to become true
6179 that declarations are assertions even at SAFETY 1. For now, it's not
6180 quite true even at SAFETY 3, but it's at least more nearly true..
6181 (Note that this change seems to increases the size of the system by
6182 O(5%) and to decrease the speed of the compiler by 20% or more.)
6183 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6184 for the problem of printing dozens of lines of distracting information
6185 about low-level system machinery as part of the top stack frame
6186 on entry to the debugger when an undefined function was called.
6187 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6188 is not reset to COMMON-LISP-USER.
6189 * Compilation of stuff related to dyncount.lisp has been made conditional
6190 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6191 smaller. The various dyncount-related symbols have been moved into
6192 a new "SB-DYNCOUNT" package.
6193 * tty-inspect.lisp has been renamed to inspect.lisp.
6194 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6195 feature has gone away. (When we eventually port to other flavors of
6196 libc and/or Unix, we'll try to make the differences between flavors
6197 invisible at the user level.)
6198 * Various other *FEATURES* tags, and/or their associated conditionals,
6199 have been removed if obsolescent, or given better documentation, or
6200 sometimes given more-mnemonic names.
6202 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6204 * tidied up "make.sh" script
6205 * tidied up system directory structure
6206 * better "clean.sh" behavior
6207 * added doc/FOR-CMUCL-DEVELOPERS
6208 * many many small tweaks to output format, e.g. removing possibly-confusing
6209 trailing #\. character in DESCRIBE-INSTANCE
6210 * (EQUALP #\A 'A) no longer signals an error.
6211 * new hashing code, including EQUALP hashing
6212 * tidied up Lisp initialization and toplevel
6213 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6214 * command line argument processing
6215 * added POSIX-GETENV function to deal with Unix-ish environment variables
6216 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6217 terminating SBCL on EOF
6218 * non-verbose GC by default
6219 * There is no more "sbcl" shell script; the sbcl file is now the C
6220 runtime executable (just like CMU CL).
6221 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6223 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6224 symbol and package information as Lisp native symbol and package objects
6225 instead of strings naming symbols and strings naming packages. This way,
6226 whenever packages are renamed (as in warm init), debug information is
6227 transformed along with everything else.
6228 * tweaked the optimization policy declarations which control the building
6229 of SBCL itself. Now, among other things, the system no longer saves
6230 source location debugging information. (This helps two problems at once
6231 by reducing SBCL size and by keeping SBCL from trying to look for its
6232 sources -- which may not exist -- when reporting errors.)
6233 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6234 debugging and testing purposes
6235 * cleaned up printing, making the printer call PRINT-OBJECT for
6236 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6237 methods, giving nearly-ANSI behavior
6238 * converted almost all special variables to use *FOO* naming convention
6239 * deleted PARSE-TIME functionality, since it can be done portably
6240 * moved some files out of cold init into warm init
6241 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6243 * regularized formatting of source files
6244 * added an install.sh script
6245 * fixed ridiculous memory usage of cross-compiler by making
6246 compiler/alloc.lisp not try to do pooling unless it can hook
6247 itself into the GC of the cross-compilation host. Now the system
6248 builds nicely on my old laptop.
6249 * added :SB-ALLOC in target-features.lisp-expr
6250 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6251 was not implemented)
6252 * re-did condition handling and note reporting in the compiler. Notes
6253 are no longer handled by signalling conditions. Style warnings
6254 and warnings are handled more correctly and reported in such a way
6255 that it's easy to find one or the other in your output (so that you
6256 can e.g. figure out which of many problems caused COMPILE-FILE to
6258 * changed the severity of several compiler warnings from full WARNING
6259 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6260 compiler note reporting so that it doesn't use the condition system
6261 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6262 COMPILE-FILE command)
6263 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6264 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6265 no longer supported, since their implementation was deeply intertwingled
6266 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6267 * removed bogus "support" for compiler macros named (SETF FOO), and
6268 removed the compiler macro for SETF INFO (but only after making a fool
6269 of myself on the cmucl-imp mailing list by posting a bogus patch for
6270 DEFINE-COMPILER-MACRO..)
6271 * Compiled files containing forms which have side effects on the Lisp
6272 reader (such as DEFPACKAGE forms) are now handled more correctly.
6273 (Compiler queuing of top level lambdas has been suppressed by setting
6274 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6275 * deleted various currently-unused source files, e.g. gengc.lisp. They
6276 may be added back at some point e.g. when porting to other architectures,
6277 but until they are it's distracting to distribute them and to try to
6279 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6280 there were so many of them they're just distractions, and UNCROSS is
6281 known to be able to handle the current sources
6282 * moved PROFILE functionality into TRACE, so that it will be clear
6283 how the wrapping and unwrapping of functions when you profile them
6284 interacts with the wrapping and unwrapping of functions when you
6285 trace them. (Actually, the functionality isn't there yet, but at least
6286 the interface specification is there. Hopefully, the functionality will
6287 arrive with some future maintenance release.)
6288 * removed host-oops.lisp
6289 * changed signature of QUIT function to allow UNIX-CODE argument
6290 * fixed READ-SEQUENCE bug
6291 * tweaked verbose GC output so that it looks more like the progress
6292 output that ANSI specifies for functions like LOAD
6293 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6294 * added <http://sbcl.sourceforge.com> to the banner information printed by