1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.52:
3 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
4 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
5 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
6 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
7 targets is now 63 bits (up from 61).
8 * enhancement: DESCRIBE now reports a lambda-list and source location
9 for complext setf-expanders.
10 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
11 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
12 of multiple-valued places to be set to NIL, instead of signalling an
13 error (per a careful reading of CLHS 5.1.2.3).
14 * bug fix: floating-point traps now work on darwin/x86-64.
16 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
17 * enhancement: ASDF has been updated to version 2.017.
18 * enhancement: the --core command line option now accepts binaries with
20 * enhancement: when built with :sb-core-compression, core files (regular
21 or executable) can be compressed with zlib. Use the :COMPRESSION
22 argument to SAVE-LISP-AND-DIE to specify a compression level.
23 * enhancement: --[no-]merge-core-pages determines whether the runtime
24 hints the operating system that identical core pages between SBCL
25 processes should share the same physical memory. Default is to only
26 enable this for compressed cores.
27 * optimization: SLEEP no longer conses.
28 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
29 or bit-vectors when using the standard pretty-print dispatch table.
30 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
32 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
33 AREF, CHAR, etc. (lp#826971)
34 * bug fix: compiler-errors causes by integer arguments with composed of
35 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
36 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
37 expressions. (lp#770184)
38 * bug fix: complex single float literals are correctly aligned when used
39 as arguments of arithmetic operators.
40 * bug fix: on 32-bit platforms, rounding of double floats larger than a
41 fixnum is correct. (reported by Peter Keller)
42 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
43 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
45 * bug fix: redefining classes such that slots with custom allocation are
46 added or removed works again.
48 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
49 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
50 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
51 MAKE-SOCKET-STREAM if using SERVE-EVENT.
52 * enhancement: added support for socket keepalive timeout intervals
53 and probe counts on Linux.
54 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
55 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
56 * enhancement: added new toplevel options --quit and --non-interactive
58 * enhancement: the Windows port of SBCL now builds and runs on Wine
59 (thanks to Anton Kovalenko).
60 * enhancement: more, and more correct, SSE instruction definitions on
61 x86-64 (thanks to Alexander Gavrilov).
62 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
63 to help the processor execute spin loops, when applicable. Currently
64 implemented for x86 and x86-64.
65 * optimization: unsigned integer divisions by a constant are implemented
66 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
67 * optimization: improved type-derivation for LOAD-TIME-VALUE.
68 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
69 instructions. (lp#814688)
70 * bug fix: COERCE to unfinalized extended sequence classes now works.
71 (reported by Jan Moringen; lp#815155)
72 * bug fix: a compiler error during typecheck generation, reported by Eric
74 * bug fix: obsolete instance protocol fires when shared slots are added
76 * bug fix: fixed-format floating point printing with scaling factors.
78 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
79 backtraces. (lp#818460)
80 * bug fix: better backtraces for interrupted syscall frames on x86.
82 * bug fix: SSE comparison instructions can be disassembled even when one
83 operand is in memory. (lp#814702)
84 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
85 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
86 type information associated with the VALUES form.
87 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
89 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
90 first write (lp#561642).
91 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
92 * bug fix: bound propagation involving conversion of large bignums to
93 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
95 * bug fix: &REST to &MORE conversion still works in unsafe call to known
96 functions; reported by Lutz Euler (lp#826459).
97 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
100 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
101 * enhancement: errors from FD handlers now provide a restart to remove
102 the offending handler.
103 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
105 * enhancement: location of user or system initialization file can now easily
106 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
107 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
108 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
109 the thunk, as a keyword argument, :arguments.
110 * enhancement: constraint propagation is simplified (and sped up) when
111 COMPILATION-SPEED > SPEED.
112 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
113 * enhancement: debugger understands &MORE arguments better.
114 * optimization: extracting bits of a single-float on x86-64 has been
115 optimized. (lp#555201)
116 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
117 when (> SPEED SPACE).
118 * optimization: local call trampolines (x86 and x86-64) are emitted
120 * optimization: implicit value cells for dynamic-extent closed-over bindings
121 on x86 and x86-64 can hold unboxed values as well.
122 * meta-optimization: improved compilation speed, especially for large
123 functions. (lp#792363 and lp#394206)
124 * bug fix: bound derivation for floating point operations is now more
125 careful about rounding possibly closing open bounds. (lp#793771)
126 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
127 backwards incompatible change in 1.0.48.27)
128 * bug fix: occasional debugger errors in when a type-error occured in a
129 function with dynamic-extent &rest list.
130 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
131 boa-construtors can be used to initialized structure slots.
132 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
133 (lp#795705, regression)
134 * bug fix: DIRECTORY works better on logical pathnames.
135 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
136 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
137 * bug fix: the compiler no longer constant-folds NaNs in
138 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
139 * bug fix: FORMAT now handles floating point rounding correct, eg.
140 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
142 * bug fix: style warning during lambda-list introspection of generic
143 functions with both optional and key argments.
144 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
146 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
149 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
150 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
151 interrupts for its body.
152 * enhancement: source locations are now available for files loaded as
153 source, compile-time-too evaluation, and initialization files.
154 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
155 virtual source-file information, eg. overriding input-file of COMPILE-FILE
156 when a temporary file is used for compilation.
157 * enhancement: ASDF has been updated to version 2.015.3.
158 * enhancement: backtraces involving frames from the default evaluator are
160 * enhancement: RUN-PROGRAM works with user-defined binary input and output
162 * enhancement: more informative compile-time warnings and runtime errors for
163 type-errors detected at compile-time.
164 * enhancement: deadlock detection for mutexes and spinlocks.
165 * enhancement: dynamic-extent for &rest lists stack allocate only their
166 spines, not their argumets. While portable code should not rely on this,
167 particularly in combination with inlining, it should make dynamic-extent
168 easier to use safely.
169 * enhancement: SB-POSIX improvements:
170 ** WNOHANG and WUNTRACED are exported.
171 ** SYSCALL-ERROR now also provides the name of the failing system call.
172 * enhancement: --script improvements:
173 ** errors on standard input, output, and error streams are handled and
174 cause scripts to exit silently, making them easier to use in shell
176 ** backtraces from scripts now go to standard error instead of the
177 terminal even if one is available.
178 ** --script can be an argument, causing the script to be loaded from
180 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
181 strings to foreign memory.
182 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
183 a file, making it easier to understand heap dynamics.
184 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
185 allows the compiler to automatically elide rest-list allocation so long as
186 the call sites are in functions that the compiler knows cannot escape.
188 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
189 especially in safe code when none of the required arguments have changed
191 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
192 uninterruptible, as well as blocking reads from socket streams created
193 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
194 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
195 from the to-char if the from-char is not a dispatch-macro character.
196 * bug fix: references to undefined variables in function calls that are
197 optimized away now signal a runtime error. (lp#722734)
198 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
199 types from a function defined in the same file. (regression from
201 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
203 * bug fix: spurious errors during QUIT when standard streams were closed.
205 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
206 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
207 years, is now no longer supported.
208 * enhancement: read() and write() have been added to SB-POSIX.
209 * enhancement: types of DEFSTRUCT constructors are proclaimed more
210 accurately, allowing better typechecking of call-sites.
211 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
212 are no longer caught. (reverted to pre 1.0.34 behaviour)
213 * optimization: slightly faster ISQRT. (lp#713343)
214 * bug fix: better support for Solaris /bin/sh in sh-based tests.
215 * bug fix: TRACE behaves better when attempting to trace undefined
216 functions. (lp#740717)
217 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
218 to (FUNCALL #'(LAMBDA ...) ...).
219 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
220 a compile-time error. (lp#720382)
221 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
223 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
224 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
225 optimization. (regression from 1.0.45.18/1.0.46.15)
226 * bug fix: package locks did not protects against compile-time side-effects
227 of DEFUN. (lp#675584)
228 * bug fix: --dynamic-space-size argument is validated more carefully.
230 * bug fix: memory fault from printing a malformed simple-condition.
232 * bug fix: redefining classes so that slot-definition classes change now
233 engages the obsolete instance protocol. (lp#766271)
234 * bug fix: constant improper lists could break source coverage recording.
236 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
239 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
240 * bug fix: fix mach port rights leaks in mach exception handling code on
241 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
243 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
244 * enhancement: redefinition warnings for macros from different files. (lp#434657)
245 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
246 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
247 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
248 processed using EVAL -- now the appropriate toplevel form is reported instead.
249 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
250 declarations. (lp#726331)
251 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
252 that NIL/NULL is excluded from the type.
253 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
255 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
257 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
258 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
259 stack-allocated values out of their dynamic-extent. (lp#310175)
260 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
261 x86-64 builds caused a type-error.
262 * bug fix: calling COMPILE with something else than a lambda-expression as the
263 second argument reports a more sensible error. (lp#718905)
264 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
265 are detected. (lp#520607)
266 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
268 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
269 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
270 methods. (regression from 1.0.45.18)
271 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
272 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
273 * bug fix: several foreign functions accepting string also accepted NIL and
274 consequently caused a memory fault at 0 now signal a type-error instead.
276 * bug fix: under rare circumstances, constraint propagation could rewrite a
277 variable reference to refer to a variable not in scope, causing an error
278 during physical environment analysis when attempting to close over the
279 variable. (lp#551227)
280 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
282 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
283 * enhancement: largefile support on Solaris.
284 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
285 arguments (lp#710017)
286 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
287 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
289 * optimization: ERROR and CERROR are approximately 5 times faster.
290 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
291 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
292 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
293 up instance creation in those cases.
294 * optimization: arithmetic operations with multiple constant arguments in now
295 have them reduced at compile-time. (lp#676414)
296 * optimization: determining current character position on string-streams for
297 pretty-printing was overly slow.
298 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
299 lifetime analysis to overwrite closed-over variables (lp#681092).
300 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
301 were not handled correctly (lp#713063).
302 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
304 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
305 mistake. (lp#667297).
306 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
307 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
308 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
309 unintern the wrong symbol with the same name. (lp#693796)
310 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
311 making it possible to restore the initial table if it has been messed up.
314 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
315 * enhancement: ~/ and ~user/ are treated specially in pathnames.
316 Refer to documentation for details.
317 * enhancement: ASDF has been updated to version 2.010.
318 * optimization: mutated closed-over variables that are only accessed by
319 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
320 declared to be DYNAMIC-EXTENT) are stored directly in their containing
321 stack frame, rather than allocating a VALUE-CELL (lp#586103).
322 * optimization: UNWIND-PROTECT cleanup functions are now declared
324 * bug fix: backtracing function with &REST arguments now shows the full
325 argument list. (lp#310173)
326 * bug fix: return types for functions with complex lambda-lists are now
327 derived properly (lp#384892)
328 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
329 long string arguments slowed the compiler down to a crawl.
330 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
331 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
332 in the DEFMETHOD body.
333 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
334 messages, being instead replaced with the corresponding function name.
335 * bug fix: don't derive overly complex unions of numeric types for arithmetic
336 operators. (lp#309448)
338 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
339 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
340 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
341 * enhancement: ALLOCATION-INFORMATION also provides the page the object
343 * enhancement: default dynamic-space size can be configured at build-time
344 without touching source, using the --dynamic-space-size argument to make.sh.
345 * enhancement: DESCRIBE recognizes symbols naming optimization policy
346 qualities, and mentions ALWAYS-BOUND declarations.
347 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
349 * enhancement: ASDF has been updated to 2.009.
350 * enhancement: the system detects known type-erros in calls better,
351 signalling a full warning about violated proclaimed FTYPEs and violations
352 of derived FTYPEs within the same file, including self-calls.
353 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
354 * optimization: constant-folding exploits numeric and character types, in
355 addition member types.
356 * optimization: numeric, character and member types that are inhabited by
357 exactly one value are tested with EQL.
358 * optimization: more conditional branches are eliminated during IR1.
359 Branches are simplified before performing if/if-conversion, and simple
360 equivalent branches (that only read the same constant or variable) are
362 * improvements to the Windows port:
363 ** change: canonical unparsing form for pathname namestrings now uses / as
364 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
365 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
366 on Windows. (thanks to Kalyanov Dmitry)
367 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
369 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
370 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
371 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
372 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
374 * bug fix: interrupts arriving during CL:OPEN caused an error.
375 * bug fix: overeager character buffering could cause input to block
376 spuriously when reading from a pipe (lp#643686)
377 * bug fix: more efficient timer expiry should avoid starvation on systems
378 where number of SIGALRMs per second is restricted. (lp#375515)
379 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
380 * bug fix: compile-times no longer scale linearly with the size of
381 quoted lists in source-code. (lp#654289)
382 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
383 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
384 so badly. (lp#654485)
385 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
386 an error for eg. STRUCTURE. (lp#458015)
387 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
388 (lp#613871, thanks to Roman Marynchak)
389 * bug fix: more reliable &REST list type derivation. (lp#655203)
390 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
391 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
392 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
393 also declared NOTINLINE. (lp#655581)
394 * bug fix: the compiler could attempt to emit constant left shifts of
395 greater value than n-word-bits. (lp#309063)
396 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
397 type information for the function being set. (lp#659220)
398 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
399 containing self-calls were recompiled with a new signature, and failed
400 to warn when a self-call using the old signature was left in. (lp#655126)
401 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
402 :DEFAULT when the default external had character size other than 8 bits.
404 * bug fix: derived types of functions in the same file were implicitly
405 trusted, leading to potential heap corruption when those function were
406 defined incompatibly. (lp#657499)
407 * bug fix: existing ASDF source registries are ignored when building
409 * bug fix: short-form DEFSETF checks that the second argument is a symbol
410 (lp#655824, thanks to Roman Marynchak)
411 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
412 package-lock violation was detected. (lp#660752)
413 * bug fix: the system can store different docstrings for a single function
414 under different names. (lp#661631, regression from 1.0.29.24)
415 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
416 properly. (lp#384801)
417 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
418 of specified length could confuse the type derivation in unsafe code.
420 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
421 fork with multiple Lisp threads running is made on every platform,
422 not just Darwin. (lp#451111)
423 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
424 around when core was saved, which could cause undefined behaviour when the
426 * bug fix: Allow UNTRACE of functions that are no longer defined
427 (lp#667657, thanks to Attila Lendvai)
428 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
429 compile-time warning (lp#664373, thanks to Stas Boukarev)
431 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
432 * incompatible change: FD-STREAMS no longer participate in the serve-event
433 event-loop by default. (lp#316072)
434 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
435 affects streams from CL:OPEN.
436 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
437 default, but this is liable to change: applications needing serve-event
438 for socket streams should explicitly request it using :SERVE-EVENTS T
440 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
442 * enhancement: CLOS effective method functions and defclass slot typechecking
443 function now have debug names for use in backtraces and profiles.
444 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
446 * enhancement: symbols are printed using fully qualified names in several
447 error and warning messages which are often associated with package
448 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
449 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
450 thanks to Andrew Golding)
451 * bug fix: reading /proc files on Linux works. (lp#425199)
452 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
454 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
455 breaking code that tried to write the value of a printer control variable.
456 (lp#581564, thanks to Stas Boukarev)
457 * bug fix: WRITE compiler macro did not handle output stream designators
458 correctly. (lp#598374, thanks to Stas Boukarev)
459 * bug fix: better availability of names of foreign functions in backtraces
460 on Linux. (lp#626962, thanks to Stas Boukarev)
461 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
462 lp#627581, thanks to Josh Elsasser and Jim Wise)
463 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
464 thanks to Josh Elsasser)
465 * bug fix: using aliases for builtin classes as defmethod specializers
466 without adding DEFTYPEs for them works. (lp#618387)
467 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
469 * bug fix: legally dynamic-extent lists and vectors used as
470 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
471 * bug fix: inline-expansion creating references to dead lambda-variables
472 (lp#454681, thanks to Alexey Dejneka)
473 * bug fix: better error message for bogus numerical arguments to RANDOM.
474 (lp#598986, thanks to Stas Boukarev)
475 * bug fix: the compiler occasionally inlined references from incompatible
476 environments occurs. (lp#308951)
477 * bug fix: the compiler threw an error when trying to compile a local
478 function (labels or flet) known to take a specialized complex argument.
479 (not in launchpad, reported by sykopomp in #lispgames)
480 * bug fix: package-locks failed to protect against compile-time effects of
481 DEFUN when the symbol previously had a macro definition. (lp#576637)
482 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
483 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
484 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
485 * bug fix: evaluation in debugger REPL works using the global context when
486 in frames that do not have sufficient debug information.
487 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
489 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
491 * bug fix: interrupt taking longer than the requested period caused SLEEP
492 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
494 changes in sbcl-1.0.42 relative to sbcl-1.0.41
496 ** Cross-compilation host is now specified to make.sh using
497 command-line argument --xc-host=<command> instead of a positional
498 argument. (thanks to Daniel Herring)
499 ** Install location can be specified to make.sh using command-line
500 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
501 * optimization: The default implementation of
502 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
503 * enhancement: Explicit memory barrier operations are now available for use
504 by multithreaded code. See documentation for details.
505 * enhancement: Experimental support for threading on Linux/PPC.
506 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
507 * bug fix: EXPT signals an error if first argument is a zero and second
508 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
509 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
510 (lp#576594, thanks to Roman Marynchak)
511 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
512 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
514 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
515 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
516 cached, leading to many fewer expensive calls to
517 COMPUTE-APPLICABLE-METHODS.
518 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
519 CLASS argument, search for and call an appropriate optimized ctor function
521 * bug fix: WRITE always returns the correct value.
523 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
524 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
525 * bug fix: Name conflicts between symbols passed as arguments to a single
526 call to IMPORT no longer add multiple symbols with the same name to the
527 package (detectable via DO-SYMBOLS).
528 * bug fix: support building without the dlshim on darwin x86 and x86-64
530 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
532 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
533 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
535 * bug fix: linkage-table entries on PPC now no longer overflow their
536 space allocation (potentially causing crashes if they are written out
538 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
539 platforms, preventing the GC from seeing stale pointers on the control
540 stack in subsequent GCs (which would, and does, break invariants).
541 * bug fix: 32-bit unicode external formats now work on big-endian systems.
542 * bug fix: Literal characters with code points greater than about 32767
543 now work on PPC UNICODE builds.
544 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
545 high order bits are explicitly cleared out. In some contrived situations,
546 this could lead to wrong results in mixed real/complex float arithmetic.
547 * bug fix: Fix function/macro redefinition warnings when building with
548 clisp. (lp#576787, thanks to Josh Elsasser)
549 * new platform: experimental support for ppc/openbsd (thanks to Josh
551 * bug fix: Floating-point traps now work on ppc/linux.
553 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
554 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
555 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
556 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
557 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
558 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
559 SB-THREAD:GRAB-MUTEX.
560 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
561 contain additional data structures and tools for concurrent programming;
562 at the moment it contains a lock-free queue, and a lock-free mailbox
564 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
565 GET-MUTEX but takes &key rather than &optional parameters. Also added
566 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
568 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
569 SB-THREAD:WAIT-ON-SEMAPHORE.
570 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
572 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
573 conditions to defer the deadline for forever.
574 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
576 * enhancement: errors from NO-APPLICABLE-METHOD and
577 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
578 generic function call.
579 * enhancement: SB-BSD-SOCKET improvements
580 ** sockets and socket streams now have a more informative printed
581 representation based on the corresponding SOCKET-NAME and
583 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
585 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
586 CL:CLOSE when appropriate, and no longer disassociates the stream
587 from the socket if close failed. (lp#543951)
588 * improvements to the instrumenting profiler
589 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
590 ** optimization: counters no longer use locks for the overflow mode.
591 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
592 incurred an off-by-one miscount.
593 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
594 * enhancement: improved DEFMETHOD pretty-printing.
595 * enhancement: perform range reduction when arguments are too large for
596 x87's transcendentals (instead of returning 0). (lp#327192)
597 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
598 some of CL-PPCRE's macros. (lp#570079)
599 * enhancement: our machine code is slightly less hostile to valgrind on
601 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
602 to Robert Swindells and Aleksej Saushev)
603 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
604 * bug fix: a rare case of startup-time page table corruption.
605 * bug fix: a semaphore with multiple waiters and some of them unwinding due
606 to timeouts could be left in an inconsistent state.
607 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
608 * bug fix: misoptimization of multiplication by one in
609 (SB-C::FLOAT-ACCURACY 0) policies.
610 * bug fix: miscounts in SB-PROFILE.
611 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
612 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
613 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
614 up itself" (March 2010) for further details.
615 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
616 against length of the list if the element is found before the specified
617 END is reached. (thanks to Alec Berryman, lp#554385)
618 * bug fix: errors signalled during package graph modification no longer
619 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
620 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
621 :SB-DOC feature. (lp#552564)
622 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
623 * bug fix: more robust runtime executable path detection. (lp#375549)
624 * bug fix: GCD always returns positive values. (lp#413680)
625 * bug fix: Converting division to multiplication by reciprocal handles
627 * bug fix: We were too eager in eliding range reduction tests on x87.
628 The maximal magnitude is 2^63, not 2^64.
629 * bug fix: Transforms for TRUNCATE don't die when the result is completely
631 * bug fix: Maybe restore buildability on Alpha.
632 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
634 * bug fix: RANDOM-STATE can be printed readably again.
635 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
636 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
637 types) could result in type mismatches during compilation.
639 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
640 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
641 stack frame thrown from.
642 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
643 compiler optimization qualities inside dynamic extent of its body.
644 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
645 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
647 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
648 constraint propgation, allowing better compilation eg. when used to
649 access structures with WITH-SLOTS. (lp#520366)
650 * optimization: the compiler is now more aware of the type of the underlying
651 storage vector for multidimensional simple arrays resulting in better code
652 for accessing such arrays.
653 * optimization: passing NIL as the environment argument to TYPEP no longer
654 inhibits optimizing it. (lp#309788)
655 * optimization: more efficient register usage when handling single-float
656 arguments on x86-64. (thanks to Lutz Euler)
657 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
658 pre-allocated temporary vectors. (lp#496249)
659 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
660 in :INITIAL-CONTENTS. (lp#523612)
661 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
662 functions. (lp#524707)
663 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
664 WITH-SLOTS usages during compilation.
665 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
666 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
667 all x86oid platforms with :UD2-BREAKPOINTS target feature.
668 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
669 instruction (tested on x86oid linux with ud2-breakpoints).
670 * bug fix: slam.sh now works on win32.
671 * bug fix: better differences of numeric types. (lp#309124)
672 * bug fix: arrays declared intersection and union types can have their
673 upgraded element type derived. (lp#316078)
674 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
675 threads started during profiling. (lp#472499)
676 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
678 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
679 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
680 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
681 values instead of signaling an error. (lp#309093)
682 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
684 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
685 declarations (lp#497321)
686 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
687 and failed to detect circular lists (lp#452008)
688 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
690 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
691 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
692 due to it, so that handlers can run.
693 * bug fix: reparsing undefined types if they have become defined since
695 * bug fix: missing &REST type in a proclamation for a function with both
696 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
697 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
698 expanded calls (lp#542174)
699 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
700 than just at toplevel form.
702 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
703 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
704 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
705 but work on type specifiers.
706 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
707 to name a type specifier.
708 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
709 specifier is valid where "valid" basically means "would be accepted as
710 second argument of TYPEP".
711 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
712 returns the function's declared, or derived FTYPE.
713 * new feature: SB-POSIX now supports accessing the d_ino member of
714 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
715 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
716 provide for seeding a RANDOM-STATE object with user-provided data or
717 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
718 attempt to initialize the returned state from the operating system's
719 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
720 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
721 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
722 * bug fix: Fix grammar and style issues for the docstrings of
723 printer-related variables and functions. (Thanks to mon_key; launchpad
725 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
727 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
728 in a row even though a handler defered the deadline long into the
730 * bug fix: A deadline handler was run without interrupts enabled for a
731 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
732 in infinitely spinning, non-killable threads.
733 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
734 before reaching the erring stack frame.
735 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
736 real power. (launchpad bug lp#525949)
737 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
738 GENCGC platforms. (launchpad bug lp#529014)
739 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
740 (launchpad bug lp#525916)
741 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
742 (Thanks to Robert Goldman)
744 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
745 * optimization: ROUND with a single single-float or double-float argument
746 is properly inlined when possible.
747 * optimization: Slightly better code is generated for integer<->float
748 conversions and for single-float<->double-float conversions on x86-64.
749 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
750 code for 32-bit and 64-bit rotations on x86-64.
751 * bug fix: The install script changes the ownership of directories as well
752 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
753 launchpad bug lp#508485)
754 * bug fix: TRUNCATE with a single single-float or double-float argument is
755 properly inlined when possible. (launchpad bug lp#489388)
756 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
757 no longer causes a compiler error on x86 and ppc.
758 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
759 always relative to *READTABLE* rather than the passed argument.
761 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
762 * minor incompatible change: threading support is now enabled by default
764 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
766 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
767 are now caught and reported just like errors during macroexpansion.
768 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
769 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
770 * enhancement: ASDF systems can now depends on SB-QUEUE.
771 * fixes and improvements related to Unicode and external formats:
772 ** bug fix: error handling and restart usage in the ucs-2 external format
774 ** there is now an implementation of the ucs-4 external format.
775 ** the utf-16 and utf-32 external formats are supported.
776 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
777 in the environment. setenv() and unsetenv() are also provided. (reported by
778 Fare Rideau; launchpad bug lp#460455)
779 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
780 loading. This ensures sensible errors for .FASL files from other
781 implementations on case-insensitive filesystems. (reported by Willem
782 Broekema; launchpad bug lp#489417)
783 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
784 Willem Broekema; launchpad bug lp#489698).
785 * bug fix: some minor code rearrangements to reenable warning-free building
786 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
787 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
789 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
792 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
793 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
794 * improvement: support O_LARGEFILE access to files larger than 2GB on
795 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
796 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
797 definitions for methods specializing on the passed class itself.
798 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
799 definitions for methods specializing on the passed class itself, or on
801 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
802 about itself during the build (e.g. for M-? in Slime), if this flag is
803 enabled in customize-target-features.lisp. This will increase the core
804 size by about 5-6mb, though, so it's mostly interesting to SBCL
806 * new feature: various GENCGC tuning parameters have been experimentally
807 documented and exported from SB-EXT. See documentation for details.
808 * fixes and improvements related to Unicode and external formats:
809 ** the Unicode character database has been upgraded to the
810 Unicode 5.2 standard, giving names and properties to a number of new
811 characters, and providing a few extra characters with case
813 ** improvement: restarts for providing replacement input/output on coding
814 errors for fd-stream external formats.
815 ** improvement: where :<encoding> is a keyword corresponding to an
816 external format the system supports, it is now possible to specify
817 (:<encoding> :replacement <character>) as an external format which will
818 automatically substitute <character> on encoding or decoding errors for
819 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
821 ** improvement: the file streams underlying the standard streams (such as
822 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
823 which uses the replacement mechanism to handle encoding errors,
824 preventing various infinite error chains and unrecoverable I/O
826 ** minor incompatible change: the utf-8 external format now correctly
827 refuses to encode Lisp characters in the surrogate range (char-codes
828 between #xd800 and #xdfff).
829 ** fix a typo preventing conversion of strings into octet vectors
830 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
832 ** fix a bug in the octet multibyte handling of decoding errors and the
833 USE-VALUE restart. (launchpad bug lp#314939)
834 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
835 restart on fd-stream decoding errors.
836 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
837 error is near the end of file.
838 ** fix a double-error case in unibyte octet conversions, when the first
839 use of USE-VALUE is ignored.
840 ** fix bugs in handling of undefined code points in unibyte encodings.
841 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
842 streams after an UNREAD-CHAR.
843 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
844 object is allocated in a boxed region of dynamic space.
845 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
846 fork with multiple Lisp threads running is made, instead of going
847 ahead with unpredictable consequences. (reported by Leslie Polzer)
848 * bug fix: uses of slot accessors on specialized method parameters within
849 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
850 error while finalizing the class. This fix may cause classes with slot
851 accessors to be finalized later than previously. (reported by Lars Rune
852 Nøstdal; launchpad bug lp#473699)
853 * bug fix: restore buildability on the MIPS platform. (regression from
854 1.0.30.38, reported by Samium Gromoff)
855 * bug fix: inspecting closures is less likely to fail with a type error.
856 * bug fix: no timer starvation when setting the system clock back.
857 (launchpad bug lp#460283)
858 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
859 standard pprint dispatch table as specified by CLHS.
860 * bug fix: give CLISP a hint about a type declaration to enable it to build
861 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
863 * bug fix: correctly dump literal objects in defaulting forms of arglists.
864 (reported by Attila Lendvai; launchpad bug lp#310132)
865 * bug fix: distinguish in type specifiers between arrays that might be
866 complex and arrays that are definitely complex. (launchpad bug lp#309129)
867 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
868 type. (reported by Levente Mészáros; launchpad bug lp#485972)
869 * bug fix: setting the value of a symbol-macro within a method in the
870 presence of type declarations works properly again. (reported by Iban
871 Hatchondo; launchpad bug lp#485019)
873 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
874 * optimization: faster FIND and POSITION on strings of unknown element type
875 in high SPEED policies. (thanks to Karol Swietlicki)
876 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
878 * improvement: better error signalling for bogus parameter specializer names
879 in DEFMETHOD forms (reported by Pluijzer)
880 * bug fix: DELETE-FILE once again works on logical pathnames (regression
882 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
884 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
885 removes previous default initargs (reported by Lars Rune Nøstdal and
887 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
888 lambda-lists. (reported by Peter Seibel)
889 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
890 correctly when starting from an executable core without saved runtime
891 options (reported by Faré Rideau, thanks to Zach Beane)
892 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
893 an optimization note instead. (reported by Martin Cracauer)
894 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
895 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
896 new process group if it doesn't need to share stdin with the sbcl
897 process. (thanks to Leslie Polzer)
898 * bug fix: SATISFIES could be misoptimized to refer to a local function.
899 (reported by Stanislaw Halik)
901 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
902 * improvement: stack allocation is should now be possible in all nested
903 inlining cases: failure to stack allocate when equivalent code is manually
904 open coded is now considered a bug.
905 * improvements related to Unicode:
906 ** the Unicode character database has been upgraded to the
907 Unicode 5.1 standard, giving names and properties to a number of new
908 characters, and providing a few extra characters with case
910 ** the system now recognizes and produces names for Unicode Hangul
912 ** the EBCDIC-US external-format is now supported for octet operations
913 (as well as for stream operations).
914 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
915 be used to output toplevel compile-time effects into a separate .CFASL
917 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
918 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
920 * optimization: TRUNCATE on known single- and double-floats is upto 25%
922 * optimization: division of floating point numbers by constants uses
923 multiplication by reciprocal when an exact reciprocal exists.
924 * optimization: multiplication of single- and double-floats floats by
925 constant two has been optimized.
926 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
927 sufficient type information is available. (thanks to Leslie Polzer)
928 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
929 known structure objects are as efficient as defstruct generated accessors.
930 * optimization: unused vector creation can now be optimized away.
931 * improvement: ASDF systems can now depends on SB-INTROSPECT.
932 * improvement: a STYLE-WARNING is signalled when a generic function
933 clobbers an earlier FTYPE proclamation.
934 * improvement: the compiler is able to track the effective type of
935 generic function across method addition and removal even in the
936 absence of an explicit DEFGENERIC.
937 * improvement: DESCRIBE now reports on symbols naming undefined
938 but assumed or declared function as well.
939 * improvement: recompilation of systems using SB-GROVEL now works
940 (thanks to Leslie Polzer)
941 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
942 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
944 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
945 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
946 well as user defined declaration names.
947 ** VARIABLE-INFORMATION is now aware of alien variables.
948 * improvement: improved address space layout on OpenBSD (thanks to Josh
950 * improvement: pretty-printing of various Lisp forms has been improved
951 (thanks to Tobias Rittweiler)
952 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
953 unused were deleted in safe code. (reported by John Fremlin)
954 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
956 * bug fix: some out-of-line array predicates were missing (reported by
958 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
960 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
961 (thanks to Larry D'Anna)
962 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
963 as well. (reported by Josh Elsasser)
964 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
965 leading to possible attempts to delete the same file twice. See docstring
966 on DELETE-FILE for details. (reported by John Fremlin)
967 * bug fix: DELETE-FILE once again deletes the file named by the pathname
968 designator argument, rather than its truename. (reported by Luis
970 * bug fix: the low-level debugger had 32-bit assumptions and was missing
971 information about some array types. (thanks to Luis Oliveira)
972 * bug fix: moderately complex combinations of inline expansions could
973 be miscompiled if the result was declared to be dynamic extent.
974 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
975 form (+ <variable> <integer>) were miscompiled under certain
977 * bug fix: in some cases no compiler note about failure to stack allocate
978 was emitted, even if the objects were in fact heap allocated.
979 * bug fix: minor violation of "otherwise inaccessible" rule for stack
980 allocation could cause objects users might reasonably expect to
981 be heap allocated to be stack allocated.
982 * bug fix: DESCRIBE signalled an error for generic functions under
983 certain circumstances. (thanks to Leslie Polzer)
984 * bug fix: Fixed spelling of an error message.
986 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
987 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
988 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
989 of SB-THREAD:THREAD-ERROR-THREAD.
990 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
991 * new feature: docstrings for local and anonymous functions are no longer
992 discarded. (thanks to Leslie Polzer)
993 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
994 values in other threads.
995 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
996 about object allocation.
997 * optimization: division of a real float by a complex float is implemented
998 with a specialised code sequence.
999 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1000 keywords is an order of magnitude faster.
1001 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1002 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1003 methods, and similarly for non-standard metaclass classes as long as there
1004 are no methods additional on MAKE-INSTANCE.
1005 * optimization: more efficient type-checks for FIXNUMs when the value
1006 is known to be a signed word on x86 and x86-64.
1007 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1008 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1010 * optimization: compiler is smarter about delegating argument type checks to
1012 * optimization: several character functions are now compiled somewhat more
1013 efficiently. (reported by Lynn Quam)
1014 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1015 * improvement: less unsafe constant folding in floating point arithmetic,
1016 especially for mixed complex/real -float operations.
1017 * optimization: constant double and single floats are stored in native
1018 unboxed format on x86[-64].
1019 * optimization: smarter code for arithmetic operations with constant floats,
1020 complex floats, or integers on x86[-64].
1021 * optimization: smarter code for conjugate/multiplication of float complexes
1022 and abs/negate of floats on x86-64.
1023 * optimization: more efficient complex float and real float operations on
1025 * improvement: complex float division is slightly more stable.
1026 * improvement: DESCRIBE output has been reworked to be easier to read and
1027 contains more pertinent information.
1028 * improvement: failure to provide requested stack allocation compiler notes
1029 provided in all cases (requested stack allocation not happening without a
1030 note being issued is now considered a bug.)
1031 * bug fix: SB-POSIX exports the documented types and functions
1032 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1033 types. (reported by "abhi")
1034 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1035 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1036 (thanks to Paul Khuong)
1037 * bug fix: looping around HANDLER-CASE could silently consume stack space
1038 on each iteration. (reported by "foobar")
1039 * bug fix: better error signalling when calls to functions seeking elements
1040 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1041 (reported by Tobias Rittweiler)
1042 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1043 directory components now works as it used to. (various prolems reported by
1044 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1045 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1046 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1047 * bug fix: bogus undefined variable warnings from fopcompiled references to
1048 global variables. (thanks to Lars Rune Nøstdal)
1049 * bug fix: foreign function names should now appear in backtraces on
1050 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1051 * bug fix: SETF compiler macro documentation strings are not discarded
1053 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1054 (thanks to Alex Plotnick)
1055 * bug fix: SLEEP accepts large integer arguments, truncating them to
1056 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1057 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1058 * bug fix: compiler notes for expensive slot type checks could be emitted
1059 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1061 changes in sbcl-1.0.29 relative to 1.0.28:
1062 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1063 https://bugs.launchpad.net/sbcl
1064 Bugs can be reported directly there, or by sending email to
1065 sbcl-bugs@lists.sourceforge.net
1066 (no subscription required.)
1067 * minor incompatible change: under weak type checking policy integer
1068 types are weakened less aggressively.
1069 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1070 allowed to return, which causes SBCL to quit with exit status 0. Previously
1071 if the function returned with a small integer return value, that value
1072 was accidentally reused as the exit status.
1073 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1074 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1075 :HASH-FUNCTION argument. Refer to user manual for details.
1076 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1078 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1079 microseconds since the Unix epoch on all platforms.
1080 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1081 allows the compiler to safely elide boundedness checks for special
1083 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1084 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1085 efficiency measure for threaded platforms, but also valueable in
1087 * new feature: UNC pathnames are now understood by the system on Windows.
1088 * optimization: the compiler uses a specialized version of FILL when the
1089 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1091 * optimization: accesses to potentially non-simple arrays where element type
1092 is known are 50% faster.
1093 * optimization: compiler now generates faster array typechecking code.
1094 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1096 * optimization: multidimensional array accesses in the absence of type
1097 information regarding array rank are approximately 10% faster due to
1098 open coding of ARRAY-RANK.
1099 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1100 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1102 * optimization: result of call to VECTOR can now be stack allocated.
1103 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1104 as long as the resulting array is one-dimensional and has a known
1105 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1106 length of the list matches the known length of the vector does not
1107 allocate the list as an intermediate step. Ditto for VECTOR and simple
1109 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1110 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1111 known element type, and is known to be simple and one dimensional.
1112 * improvement: SBCL now emits a compiler note where stack allocation was
1113 requested but could not be provided (not in all cases, unfortunately)
1114 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1115 * improvement: pretty-printing loop has been implemented properly. (thanks
1116 to Tobias Rittweiler)
1117 * documentation: CLOS slot typechecing policy has been documented.
1118 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1119 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1120 pointer, leading to memory faults. (thanks to Bart Botta)
1121 * bug fix: better floating point exception handling on x86/OpenBSD.
1122 (thanks to Josh Elsasser)
1123 * bug fix: exit status from QUIT when called under --script was lost
1124 (reported by Hubert Kauker)
1125 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1126 same implementation of FILL to initialize the array, even if a more
1127 efficient one was available (reported by Stas Boukarev, thanks to
1129 * bug fix: potential miscompilation of array stack allocation on x86 and
1130 x86-64. (reported by Time Tossavainen)
1131 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1132 result in their subforms being treated as top level forms. (reported by
1134 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1135 than a machine register could leave garbage in the high bits of the
1136 result register (bug 316325).
1137 * bug fix: disable address space randomization Linux/x86-64 as well,
1138 not just x86-64. (reported by Ken Olum)
1139 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1140 generate incorrect code.
1141 * bug fix: #201; type inference for CONS and ARRAY types could derive
1142 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1143 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1144 could not be assigned to or bound with PROGV. (reported by Lorenz
1146 * bug fix: the value of CL:- in the inspector was the previous expression
1147 evaluated rather than the expression being evaluated.
1148 * bug fix: constants can no longer be locally declared special.
1149 * bug fix: signals delivered to threads started from foreign land (read:
1150 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1151 thread by blocking all signals and resignalling.
1152 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1153 from :INITFORM, if any.
1155 changes in sbcl-1.0.28 relative to 1.0.27:
1156 * a number of bugs in cross-compilation have been fixed, with the ultimate
1157 result that building under (at least) clisp should be much more reliable.
1158 * minor incompatible changes: echo-streams now propagate unread-char to the
1159 underlying input stream, and no longer permit unreading more than one
1161 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1162 frames, allowing for instance more reliable backtraces.
1163 * improvement: the debugger REPL can now reference lexical variables
1164 by name directly for code compiled with (DEBUG 3).
1165 * improvement: errors from malformed declarations now have better source
1166 paths associated with them. (thanks to Tobias Rittweiler)
1167 * optimization: faster local calls on x86/x86-64
1168 * bug fix: some error messages for out-of-bound array indexes confused the
1169 index and the bound. (thanks to Stas Boukarev)
1170 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1172 * bug fix: running regressions tests in shells without OSTYPE set now works.
1173 (reported by Harald Hanche-Olsen)
1174 * bug fix: more robust static space exhaustion signalling from
1175 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1176 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1177 docstring away instead of storing it under names such as (LAMBDA (X)).
1178 (reported by Leslie Polzer)
1179 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1180 (thanks to Ole Arndt for the patch)
1181 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1182 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1183 potentially-invalid effective methods in its cache.
1184 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1185 instances as well (thanks to Paul Khuong)
1186 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1187 SB-POSIX:WAITPID and their C equivalents.
1188 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1190 changes in sbcl-1.0.27 relative to 1.0.26:
1191 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1192 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1193 * improvement: the system either recovers from stack exhaustion or dies
1194 properly as opposed to leaving the user uncertain of whether the handler
1195 trampled on some random memory next to the stack or having to rely on
1196 --lose-on-corruption (which is still a good idea to use in production
1197 because stack exhaustion can happen in signal handlers which will likely
1199 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1200 1.0.25.37, reported by Harald Hanche-Olsen)
1201 * bug fix: work around signal delivery bug in darwin (regression from
1202 1.0.25.44, reported by Sidney Markowitz)
1203 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1205 changes in sbcl-1.0.26 relative to 1.0.25:
1206 * incompatible change: an interruption (be it a function passed to
1207 INTERRUPT-THREAD or a timer function) runs in an environment where
1208 interrupts can be enabled. The interruption can use
1209 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1210 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1211 potentially running out of stack. Keep in mind that in the absence
1212 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1213 acquiring a lock can enable interrupts.
1214 * incompatible change: GC-OFF and GC-ON are removed, as they were
1215 always unsafe. Use WITHOUT-GCING instead.
1216 * new feature: runtime option --disable-ldb
1217 * new feature: runtime option --lose-on-corruption to die at the
1218 slightest hint of possibly non-recoverable errors: running out of
1219 memory, stack, alien stack, binding stack, encountering a memory
1220 fault, etc. In the absence of --lose-on-corruption a warning is
1222 * enhancement: detect binding stack exhaustion
1223 * enhancement: detect alien stack exhaustion on x86/x86-64
1224 * improvement: generally more stable and reliable interrupt handling
1225 * improvement: there is a per thread interruption queue,
1226 interruptions are executed in order of arrival
1227 * improvement: a repeating timer reschedules itself when the it has
1228 finished, but expiration times are spaced equally. If an
1229 expiration time is in the past it will trigger after a short grace
1230 period that may give a chance to other things to run.
1231 * optimization: slightly faster gc on multithreaded builds
1232 * optimization: faster WITHOUT-GCING
1233 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1234 important locks so that the debugger/handler doesn't produce
1235 recursive errors or deadlock.
1236 * bug fix: real-time signals are not used anymore, so no more
1237 hanging when the system wide real-time signal queue gets full.
1238 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1240 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1241 * bug fix: fix random memory faults related to interrupts on alpha
1242 * bug fix: fix random memory faults related to interrupts on sparc
1243 * bug fix: fix deadlocks related to starting threads
1244 * bug fix: fix deadlines on locks on futex platforms
1245 * bug fix: restore errno in signal handlers
1246 * bug fix: fix deadlocks related to hash tables
1247 * bug fix: fix deadlocks in pcl
1249 changes in sbcl-1.0.25 relative to 1.0.24:
1250 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1251 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1252 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1253 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1254 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1255 better name and does not return values so stale on multiprocessor systems.
1256 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1258 * improvement: unithread builds keep track of MUTEX-VALUE.
1259 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1260 stream anymore making it thread safe to have a concurrent reader and
1261 a writer, for instance, in a pipe.
1262 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1263 arguments, making compiler-macros for SETF-functions able to inspect
1264 their constant arguments.
1265 * improvement: COMPILE-FILE reports times with millisecond accuracy
1266 (thanks to Luis Oliveira)
1267 * optimization: CHAR-CODE type derivation has been improved, making
1268 TYPEP elimination on subtypes of CHARACTER work better. (reported
1269 by Tobias Rittweiler, patch by Paul Khuong)
1270 * bug fix: setting alien structure fields of type struct by value now
1271 computes the right offset for the memory copy.
1272 * bug fix: compilation problem involving inlined calls to aliens with
1273 result type VOID. (reported by Ken Olum)
1274 * bug fix: #235a; sequential inline expasion in different policies no
1275 longer reuses the functional from the previous expansion site.
1276 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1277 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1278 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1279 cause an implied type redefinition. Regression from 1.0.21.29.
1280 * bug fix: sign-extension of small signed return values now works with C
1281 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1282 * improvements to the Windows port:
1283 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1284 Westfold, thanks to Rudi Schlatte)
1286 changes in sbcl-1.0.24 relative to 1.0.23:
1287 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1288 vector of a multidimensional SIMPLE-ARRAY.
1289 * new feature: the system now signals a continuable error if standard
1290 readtable modification is attempted. (thanks to Tobias Rittweiler)
1291 * new feature: DIRECTORY has been extended with a non-standard keyword
1292 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1293 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1294 has been robustified and documented better. (thanks to Robert Goldman)
1295 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1296 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1297 * tradeoff: constant FORMAT control strings are now compiled unless
1298 SPACE > SPEED (previously only when SPEED > SPACE.)
1299 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1301 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1303 * bug fix: lexical type declarations are now correctly reported by
1304 SB-CLTL2. (reported by Larry D'Anna)
1305 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1306 using UTF-8 as external format. (thanks to Luis Oliveira)
1307 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1308 are signalled correctly. (thanks to Stas Boukarev)
1309 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1310 designator. (thanks to Tobias Rittweiler)
1311 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1312 designator, and returns T instead of the function. (thanks to
1314 * bug fix: direct superclasses of STANDARD-CLASS and
1315 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1316 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1317 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1318 when no class with the named slot yet exists no longer causes a
1319 compile-time style-warning.
1320 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1321 in safe code. (reported by Didier Verna)
1322 * bug fix: #430; nested structure constructors can stack allocate.
1323 * bug fix: on some 64-bit platforms dynamic space size was truncated
1324 to #xffff0000 bytes. (reported by Benjamin Lambert)
1325 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1326 REPL unusable. (reported by Daniel Herring)
1327 * bug fix: return values of READ-SEQUENCE did not take :START into
1328 account on file streams, regressions since 1.0.12.22. (reported by
1329 Thomas Russ, patch by Paul Khuong)
1330 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1331 method specializer used to confuse permuation vector optimization.
1332 * bug fix: system inserted bogus implicit type declarations for local
1333 special variables in DEFMETHOD bodies.
1334 * bug fix: #354; duplicated frames in backtraces due to
1335 non-tail-call-optimized XEPs to functions with return type NIL
1337 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1338 initializes structure object slots according to DEFSTRUCT initforms,
1339 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1340 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1341 (reported by Bruno Haible and Stephen Wilson)
1342 * bug fix: #395; fill-pointer output streams used now support
1343 element-type BASE-CHAR as well.
1344 * bug fix: compiler error when attempting to derive return value of
1345 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1347 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1349 * bug fix: Mac OS X binaries should now be portable between Leopard
1352 changes in sbcl-1.0.23 relative to 1.0.22:
1353 * enhancement: when disassembling method functions, disassembly
1354 for the associated fast function is also produced.
1355 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1357 * optimization: printing with *PRINT-PRETTY* true is now more
1358 efficient as long as the object being printed doesn't require
1359 special handling by the pretty printer.
1360 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1361 now interact correctly with type declarations.
1362 * partial bug fix: PCL detects infinite recursion during wrapper
1363 validation. (thanks to Attila Lendvai)
1364 * bug fix: #426; nested function calls are inlined properly.
1365 Previously if FOO was an inline function, in calls of the form
1366 (FOO (FOO ...)) the outer call was not inlined.
1367 * bug fix: long long arguments passed in registers to alien
1368 functions on PowerPC Linux and NetBSD are now handled correctly
1369 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1371 changes in sbcl-1.0.22 relative to 1.0.21:
1372 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1373 for the shared object in the current directory, but passes the native
1374 namestring of the designated pathname to the operation system's shared
1375 object loading function as-it.
1376 * minor incompatible change: --disable-debugger toplevel option now takes
1377 effect before processing of initialization files and --eval or --load
1379 * new feature: new commandline argument: --script, which supports
1380 shebang lines. See documentation for details. (based on work by
1382 * new feature: SAVE-LISP-AND-DIE can save current values of
1383 --dynamic-space-size and --control-stack-size in the executable core,
1384 causing it to skip normal runtime option processing. See documentation
1385 for details. (thanks to Zach Beane)
1386 * enhancement: inoccous calls to EVAL or generic functions dispatching
1387 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1388 * enhancement: the system no longer resignals errors from --load and
1389 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1390 associated with the original error to be lost. (thanks to Ariel
1392 * enhancement: :DONT-SAVE keyword argument has been added to
1393 LOAD-SHARED-OBJECT for controlling interaction with
1394 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1395 the effects of an earlier LOAD-SHARED-OBJECT call.
1396 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1397 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1398 provided. (reported by Cedric St-Jean)
1399 * bug fix: circularity handling in the reader did not treat raw
1400 structure slots correctly. (reported by Cedric St-Jean)
1401 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1402 file descriptors when there were none.
1403 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1404 was broken. (reporteed by Willem Broekema)
1405 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1406 pathnames without a directory.
1407 * bug fix: COMPILE-FILE did not warn about undefined variable
1408 references at toplevel, and LOAD of the resulting fasl did
1409 not signal an error.
1410 * bug fix: functions with non-required arguments used to end up with
1411 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1412 * bug fix: redefining a function with non-required arguments didn't
1413 update the system's knowledge about its call signature properly.
1414 * bug fix: fixed #431; incompatible alien record type redefinitions
1415 are detected and handled. (reported by Neil Haven)
1416 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1417 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1419 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1420 after alien stack frames.
1421 * bug fix: strings passed to mk{s,d}temp lacked null termination
1423 changes in sbcl-1.0.21 relative to 1.0.20:
1424 * new feature: the compiler is able to track the effective type of a
1425 generic function across method addition and removal.
1426 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1427 appropriately typed structure slots without locking.
1428 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1429 information like those gathered by TIME using a programming-friendly
1431 * new feature: TIME reports time taken even if the form performs a
1432 non-local transfer of control.
1433 * enhancement: reduced conservativism on GENCGC platforms: on
1434 average 45% less pages pinned (measured from SBCL self build).
1435 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1436 mutate constant symbols or violate declaimed type of the symbol.
1437 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1438 sleeping on the semaphore in heavily contested semaphores.
1439 * bug fix: semaphores and condition variables were not interrupt
1441 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1442 owned by other threads anymore.
1443 * bug fix: FIND on lists called KEY outside the specified
1444 subsequence. (reported by budden)
1445 * bug fix: LOG doesn't use single-float intermediate results when
1446 given mixed integer and double-float arguments, leading to better
1447 precision. (reported by Bob Felts)
1448 * bug fix: LOG with base zero returned values of inconsistent type.
1450 changes in sbcl-1.0.20 relative to 1.0.19:
1451 * minor incompatible change: OPTIMIZE qualities
1452 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1453 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1454 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1455 * documentation: some slot access efficiency guidelines have been
1456 added to the user manual.
1457 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1458 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1459 as ASSOC and MEMEBER.
1460 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1461 to more efficient EQ-comparison versions more often.
1462 * optimization: enhanced derivation of DOLIST iteration variable type
1464 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1466 * optimization: runtime lookup of function definitions can be
1467 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1468 * optimization: compiler is able to derive the return type of
1469 (AREF (THE STRING X) Y) as being CHARACTER.
1470 * optimization: CLRHASH on empty hash-tables no longer does pointless
1471 work. (thanks to Alec Berryman)
1472 * optimization: REPLACE deftransforms don't punt when :START1 or
1474 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1475 no longer emits a code deletion note. (reported by Andrew
1477 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1478 functions with an odd number of &OPTIONAL arguments, a &REST
1479 argument, and one or more &KEY arguments at the call site.
1480 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1481 arguments appeared at call sites as well.
1482 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1483 READ-LINE &co can no longer read from them afterwards. (reported
1485 * bug fix: fixed #427: unused local aliens no longer cause compiler
1486 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1488 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1489 alien-stack leakage. (reported by Andy Hefner)
1490 * bug fix: PROGV signals an error when an attempt to violate declared
1491 type of a variable or bind a constant is made.
1492 * bug fix: SET signals an error when an attempt to violate declared
1493 type of a variable is made.
1494 * bug fix: restart computation during the execution of a restart
1495 test function no longer causes infinite recursion. (reported by
1497 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1498 signals an error. (thanks to Pierre Mai)
1499 * bug fix: EXPORT left symbol unexported in conflict situations.
1500 (thanks to Michael Weber)
1501 * bug fix: correctly handle name conflicts involving CL:NIL.
1502 (thanks to Michael Weber)
1503 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1504 conflicts arising from USEing package with conflicting symbols
1505 correctly. (thanks to Michael Weber)
1507 changes in sbcl-1.0.19 relative to 1.0.18:
1508 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1509 warnings that go otherwise unhandled will be muffled if they are
1510 of the type that's the value of this variable.
1511 * optimization: stack allocation is slightly more efficient on x86
1513 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1514 where a raw slot always is initialized using the initform whose
1515 type is not know sufficiently well a compile-time are now compiled
1516 correctly. (reported by John Morrison)
1517 * bug fix: compiler no longer makes erronous assumptions in the
1518 presence of non-foldable SATISFIES types.
1519 * bug fix: stack analysis missed cleanups of dynamic-extent
1520 arguments in non-let-converted calls to local functions.
1521 * improvements to the Windows port:
1522 ** adjusted address spaces for building on both Win32 and
1523 Win64. (thanks for John Connors)
1524 * fixed some bugs revealed by Paul Dietz' test suite:
1525 ** interval arithmetic during type derivation used inexact integer
1526 to single-float coercions.
1527 ** arithmetic operations involving large integers and single
1528 floats give the same results in compiled and interpreted code.
1529 ** deriving the result type of COERCE no longer signals an error
1530 if the derived type of the second argument is a MEMBER type
1531 containing invalid type specifiers.
1532 ** ADJOIN with constant NIL as second argument works correctly.
1533 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1535 changes in sbcl-1.0.18 relative to 1.0.17:
1536 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1537 profiles only the current thread.
1538 * minor incompatible change: changes to SYMBOL-VALUE of constants
1539 defined with DEFCONSTANT now signal an error.
1540 * enhancement: SB-SPROF now has support for wallclock profiling,
1541 and is also able to profile specific threads. REPORT output
1542 has also additional sorting options.
1543 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1545 * optimization: structure allocation has been improved
1546 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1547 ** out of line constructors are ~10% faster.
1548 ** inline constructors are ~15% faster.
1549 ** inline constructors are capable of dynamic extent allocation
1550 (generally on x86 and x86-64, in some cases on other platforms
1552 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1554 * optimization: file compiler is now able to coalesce non-circular
1555 lists, non-base strings, and bit-vectors. Additionally, constants
1556 are never referenced through SYMBOL-VALUE at runtime.
1557 * optimization: code defining methods on PRINT-OBJECT (and other
1558 generic functions in the COMMON-LISP package) now loads faster.
1559 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1561 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1562 fasl is now deleted. (reported by Attila Lendvai)
1563 * bug fix: READ-LINE always returned NIL for the last line in files.
1564 (reported by Yoshinori Tahara)
1565 * bug fix: more accurate disassembly annotations of foreign function
1566 calls. (thanks to Andy Hefner)
1567 * bug fix: trimming non-simple strings and non-string string
1568 designators when the there is nothing to trim works properly.
1569 (thanks to James Knight)
1570 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1571 (thanks to Travis Cross)
1572 * fixed some bugs revealed by Paul Dietz' test suite:
1573 ** NIL is a valid function name (regression at 1.0.13.38)
1574 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1575 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1576 fill pointers properly (regression at 1.0.12.23)
1577 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1578 displacement indices properly (regression at 1.0.12.23)
1580 changes in sbcl-1.0.17 relative to 1.0.16:
1581 * temporary regression: user code can no longer allocate closure
1582 variable storage on stack, due to bug 419 without explicitly
1583 requesting it. Please consult sbcl-devel for advice if you need to
1584 use this feature in the meanwhile.
1585 * new feature: runtime argument --control-stack-size can be used to
1586 adjust thread default control stack size.
1587 * enhancement: improved TIME output
1588 ** all times are reported using the measured accuracy (milliseconds
1589 for real and GC times, microseconds for everything else.)
1590 ** processor cycle counts on x86 and x86-64.
1591 ** interpreted forms are counted for both evaluator modes.
1592 ** number of lambdas converted by the compiler is reported.
1593 ** CPU percentage report (computed from real and total run time.)
1594 ** more comprehensive run time reporting, using a condenced format
1595 ** interperted form, lambda, and page fault counts are omitted
1597 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1599 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1600 * optimization: two argument forms of LAST are upto ~10% faster
1601 in normal SPEED policies.
1602 * optimization: NCONC no longer needs to heap cons its &REST list
1603 in normal SPEED policies.
1604 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1605 to Sidney Markowitz)
1606 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1607 regression since 1.0.9.1. (thanks to Eric Marsden)
1608 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1609 since 1.0.15.36. (thanks to Paul Khuong)
1610 * bug fix: LAST when always returned the whole list when given a bignum
1611 as the second argument.
1612 * bug fix: dynamic extent allocation of nested lists and vectors
1613 could leak to otherwise accessible parts.
1614 * bug fix: invalid optimization of heap-allocated alien variable
1616 * bug fix: fasl header checking is less vulnerable to different
1617 platform word lengths.
1618 * bug fix: more correct assembler syntax for GNU binutils
1619 2.18.50.0.4 support. (thanks to Marijn Schouten)
1620 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1622 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1623 declarations) successfully. (reported by Attila Lendvai)
1625 changes in sbcl-1.0.16 relative to 1.0.15:
1626 * minor incompatible change: revert the changes to sb-posix's error
1627 signaling added in 1.0.14.
1628 * minor incompatible change: change PROBE-FILE back to returning
1629 NIL whenever we can't get a truename, as was the case before 1.0.14.
1630 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1631 inherits from ERROR instead of just CONDITION.
1632 * new feature: SB-INTROSPECT can provide source locations for instances
1633 as well. (thanks to Tobias Rittweiler)
1634 * optimization: binding special variables now generates smaller code
1635 on threaded platforms.
1636 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1637 and cases where no :TEST is given but the compiler can infer that
1638 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1639 * optimization: better LOGNOT on fixnums.
1640 * optimization: modular arithmetic for a particular requested width
1641 is implemented using a tagged representation unless a better
1642 representation is available.
1643 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1644 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1645 for wellformedness and returns a specialized vector. (reported by
1646 Francois-Rene Rideau)
1647 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1648 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1649 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1650 unscheduling timer at the same time as another timer fires.
1651 * bug fix: don't reschedule timers for dead threads.
1652 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1653 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1654 bogus errors if select() was interrupted.
1655 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1657 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1658 * enhancement: cleaner backtraces for interactive interrupts, as
1659 well as other cases where the interesting frames used to be
1660 obscured by interrupt handling frames.
1661 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1662 now supported, and tracing a whole package using (TRACE "FOO") now
1663 traces SETF-functions as well.
1664 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1665 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1666 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1667 * unreadably printed representation of hash-tables now includes
1669 * bug fix: partially fixed #188: type propagation from assignments
1670 is now more efficient.
1671 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1672 'DOUBLE-FLOAT) are not flushable.
1673 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1674 full address of the object, and none of the tag bits.
1675 * bug fix: readably printing hash-tables now respects other printer
1676 control variables. (reported by Cedric St-Jean)
1677 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1678 keyword with MAKE-HASH-TABLE.
1679 * bug fix: export SB-POSIX:MKSTEMP.
1680 * bug fix: SORT was not interrupt safe.
1681 * bug fix: XREF accounts for the last node of each basic-block as
1683 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1684 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1685 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1686 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1687 create obsolete instances in the case of redefinition or
1688 obsoletion of a superclass. (thanks to Andy Hefner)
1689 * bug fix: Support for the Alpha architecture has been revived; it had
1690 suffered somewhat from lack of maintenance since sbcl-1.0.
1691 * improvements to the Windows port:
1692 ** The system detects the codepage to use at startup, instead of
1693 using the value from the saved core. (thanks to Kei Suzuki)
1695 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1696 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1697 (see documentation for details.)
1698 * revived support for OpenBSD (contributed by Josh Elsasser)
1699 * partially fixed bug #108: ROOM no longer suffers from occasional
1700 (AVER (SAP= CURRENT END)) failures.
1701 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1702 bodies no longer cause a WARNING to be signalled. (reported by
1704 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1705 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1706 the bug in TRUNCATE.) (reported by Michael Weber)
1707 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1708 no samples. (reported by Andy Hefner)
1709 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1710 no longer appear as (NIL ...) frames in backtraces.
1711 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1712 is now actually exported from SB-EXT as documented. (reported by
1714 * bug fix: sb-aclrepl now correctly understands how to inspect
1715 single-floats on 64-bit platforms where single-floats are not boxed.
1716 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1717 yet been finalized. (reported by Levente Meszaros)
1718 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1719 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1720 SBCL-specific optimize qualities.
1722 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1723 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1724 an executable in the search path, and does so in the child
1725 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1726 been removed; it can be found in the CVS history, for somebody who
1727 needs that search behavior (see the manual).
1728 * minor incompatible change: compiler policy re. weakening type
1729 checks has changed: now type checks are weakened only if SAFETY < 2
1731 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1732 unparsing of directory pathnames as files. Analogously,
1733 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1734 filename to parse into a directory pathname.
1735 * enhancement: implicit generic function creation now signals a
1736 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1737 users can bind handlers for and muffle around calls to LOAD.
1738 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1739 to be used (using the default stream external format), and allows
1740 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1741 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1742 strings and vectors whose element-type or simplicity is not fully
1743 known at compile-time.
1744 * optimization: STRING-TRIM and related functions no longer allocate
1745 a new string when no trimming needs to be performed. These functions
1746 are also faster than before when the input string has been declared
1748 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1749 * optimization: READ-LINE is significantly faster for files containing
1751 * optimization: non-open coded uses of character comparison operators
1752 (e.g. char=) no longer cons when called with more than one parameter
1753 on platforms supporting dynamic-extent allocation.
1754 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1755 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1756 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1758 * bug fix: some sequence functions elided bounds checking when
1760 * bug fix: too liberal weakening of union-type checks when SPEED >
1762 * bug fix: more bogus fixnum declarations in ROOM implementation
1765 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1766 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1767 :SYNCHRONIZED argument, which makes the hash-table safe for
1768 concurrent accesses (but not iteration.) See also:
1769 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1770 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1771 * optimization: CONCATENATE on strings is an order of magnitude faster
1772 in code compiled with (> SPEED SPACE).
1773 * optimization: SUBSEQ is ~50% faster on lists.
1774 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1775 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1776 END is smaller then START.
1777 * bug fix: SB-PROFILE will no longer report extra consing for nested
1778 calls to profiled functions.
1779 * bug fix: ROOM implementation had bogus fixnum declarations which
1780 could cause type-errors when calling ROOM on large images.
1781 * bug fix: if file compilation is aborted, the partial fasl is now
1782 deleted, and COMPILE-FILE returns NIL as the primary value.
1783 * bug fix: number of thread safety issues relating to SBCL's internal
1784 hash-table usage have been fixed.
1785 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1786 be returned from its body when the values were being returned
1787 using unknown-values return convection and the W-P-O was wrapped
1788 inside an UNWIND-PROTECT.
1789 * bug fix: sb-posix should now compile again under Windows, enabling
1790 slime to work again.
1792 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1793 * incompatible change: hash-table accessor functions are no longer
1794 automatically protected by locks. Concurrent accesses on the same hash-table
1795 from multiple threads can give inconsistent results or even corrupt the
1796 hash-table completely. Multi-threaded applications should do their own
1797 locking at the correct granularity. In the current implementation it is
1798 still safe to have multiple readers access the same table, but it's not
1799 guaranteed that this property will be maintained in future releases.
1800 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1801 and will signal an error at runtime.
1802 * enhancement: SB-THREAD package now exports a semaphore interface.
1803 * enhancement: CONS can now stack-allocate on x86 and
1804 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1806 * enhancement: nested lists can now be stack allocated on
1807 platforms providing stack allocation support.
1808 * enhancement: dynamic-extent support has been extended to support
1809 cases where there are multiple possible sources for the stack
1811 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1812 if the mutex is uncontested on Linux.
1813 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1814 as specified by the CLHS. (thanks to Tobias Rittweiler)
1815 * bug fix: NaN comparison now works on x86-64.
1816 * bug fix: CLOSE :ABORT T on a stream with pending output now
1818 * bug fix: instances of non-standard metaclasses using standard
1819 instance structure protocol sometimes missed the slot type checks
1821 * bug fix: known functions can be inlined in high-debug code.
1823 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1824 * minor incompatible change: the MSI installer on Windows no longer
1825 associates .lisp and .fasl files with the installed SBCL.
1826 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1827 on Windows. (thanks to Luis Oliviera)
1828 * new feature: SB-CLTL2 contrib module now implements
1829 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1830 * optimization: scavenging weak pointers is now more efficient,
1831 requiring O(1) instead of O(N) per weak pointer to identify
1832 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1833 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1834 method bodies using constant slot-names when the first argument is
1835 a specializer parameter for the method.
1836 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1837 names, when the class of the instance is a direct instance
1838 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1839 as slow as the constant slot-name case.)
1840 * optimization: member type construction is now O(N) instead
1842 * optimization: UNION and NUNION are now O(N+M) for large
1843 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1845 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1846 now more readable in environments like Slime which display it.
1847 (thanks to Tobias C. Rittweiler)
1848 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1849 was able to infer the correct argument type for the object on which
1850 the CAS operation was being performed.
1851 * bug fix: copy propagation interfered with parallel assignment
1852 semantics in local calls. (reported by Paul Khuong)
1853 * bug fix: the signed modular fixnum shift compiled to wrong code on
1854 x86 and x86-64. (spotted by a slight modification to some of
1857 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1858 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1859 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1860 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1862 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1863 and generic function now print the object identity for anonymous
1864 instances. (thanks to Attila Lendvai)
1865 * enhancement: as an extension to MOP, SBCL now supports SETF of
1866 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1867 (thanks to Attila Lendvai)
1868 * enhancement: sb-cover has an alternate annotation mode which puts
1869 the form annotations at the car of the form, instead of annotating
1870 it completely. The benefit of this mode is that it shows better
1871 which forms were instrumented by the compiler.
1872 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1873 by printer control variables. (reported by Dan Corkill)
1874 * bug fix: system leaked memory when delayed output was performed by
1875 the OS in smaller chunks then expected. (thanks to David Smith)
1876 * bug fix: system leaked memory when file streams were not closed
1878 * bug fix: large objects written to slow streams that were modified
1879 after the write could end up with the modified state written to
1880 the underlying file descriptor.
1881 * bug fix: multiple threads operating in parallel on the same stream
1882 could cause buffer-overflows.
1883 * bug fix: source location information is stored correctly
1884 (broken since 1.0.6). This bug would generally show up as the
1885 Slime debugger highlighting the wrong form when the sldb-show-source
1887 * bug fix: Branch forms are again annotated as branches in the sb-cover
1889 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1890 on x86-64. (reported by Gregory Vanuxem)
1891 * bug fix: EQUALP could return wrong results for structures with raw
1892 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1893 word). (reported by Vjacheslav Fyodorov)
1894 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1897 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1898 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1899 atomic compare-and-swap operations on threaded platforms.
1900 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1901 allows assigning a global minimum value to optimization qualities
1902 (overriding proclamations and declarations).
1903 * enhancement: closed over variables can be stack-allocated on x86
1905 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1907 * optimization: slot definition lookup is now O(1). This speeds up
1908 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1909 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1910 * optimization: ASSOC and MEMBER can now be open-coded for all
1911 combinations of keyword arguments when second argument is constant
1912 and SPEED >= SPACE. In other cases a specialized version is
1914 * bug fix: using obsoleted structure instances with TYPEP and
1915 generic functions now signals a sensible error.
1916 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1917 (reported by Kristoffer Kvello)
1918 * bug fix: backtrace construction is now more careful when making
1919 lisp-objects from pointers on the stack, to avoid creating bogus
1920 objects that can be seen by the GC.
1921 * bug fix: defaulting of values in contexts expecting more than 7
1922 variables now works on x86-64. (reported by Christopher Laux)
1923 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1925 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1926 as the property-list of a symbol.
1927 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1928 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1929 situations requested, are once again file-compileable. (reported
1932 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1933 * MOP improvement: support for user-defined subclasses of
1934 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1935 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1936 the expansion of DEFMETHOD, is responsible for generating a form
1937 which creates a list of specializers when evaluated. Additional
1938 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1939 debugging and introspective support.
1940 * minor incompatible change: the (unsupported) spinlock interface
1941 has changed: free spinlock now has the value NIL, and a held spinlock
1942 has the owning thread as its value.
1943 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1944 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1946 * enhancement: name of a socket-stream is now "a socket" instead of
1947 "a constant string".
1948 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1949 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1950 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1951 for generic functions. (Thanks to Tobias C. Rittweiler)
1952 * optimization: bignum printing speed has been improved by 20-40%
1953 (depending on the bignum size.)
1954 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1956 * bug fix: the cache used by the CLOS to store precomputed effective
1957 methods, slot offsets, and constant return values is now thread and
1959 * bug fix: generic function dispatch function updating is now thread
1960 and interrupt safe (in the sense that the known issues have been
1962 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1963 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1964 * bug fix: asdf systems with dependencies to the SB-POSIX or
1965 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1966 * bug fix: interrupt safety of applicable method computation has been
1969 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1970 * new contrib: sb-cover, an experimental code coverage tool, is included
1971 as a contrib module.
1972 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1973 significantly faster.
1974 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1975 produce more efficient code on x86-64 if the compiler can determine
1976 that (+ INDEX <constant>) does not require a bounds check and FOO
1977 has an element type at least 8 bits wide.
1978 * enhancement: a new, experimental synchronous timeout facility is
1979 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1980 * enhancement: when a symbol name conflict error arises, the
1981 conflicting symbols are always printed with a package prefix.
1982 (thanks to Kevin Reid)
1983 * enhancement: stepping is now once again supported on the SPARC and
1984 MIPS platforms. (It is also now more likely to work on CheneyGC
1986 * enhancement: sb-sprof can now also track and report accurate call
1988 * bug fixes: the treatment of non-standard subclasses of
1989 SB-MOP:SPECIALIZER is more correct.
1990 * incompatible change: PURIFY no longer copies the data from the
1991 dynamic space into the static and read-only spaces on platforms
1992 that use the generational garbage collector
1993 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1995 * bug fix: GC race condition occasionally resulting in crashes with
1996 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1998 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2000 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2001 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2002 * bug fix: an asynchronous interrupt could previously leave the
2003 system running with GC inhibited.
2004 * bug fix: a DECLARE form evaluated at top-level now causes an error
2005 rather than silently (or verbosely) returning NIL.
2006 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2007 result in a error being signalled due to source form lookup errors.
2008 (reported by Peter Graves)
2010 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2011 * incompatible change: removed writer methods for host-ent-name,
2012 host-ent-addresses -- changing the values did not update the DNS
2014 * minor incompatible change: changed experimental JOIN-THREAD interface
2015 * documentation: the manual now lists reader and writer methods
2016 in class slot documentation sections. (thanks to Richard M Kreuter)
2017 * documentation: unwinding from asyncronous events has been
2018 documented as unsafe.
2019 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2020 in multithreaded application code.
2021 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2022 platforms. (thanks to James Anderson for the optimization hint)
2023 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2025 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2026 variants no longer cons.
2027 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2028 their NOT- variants no longer cons.
2029 * optimization: EQUAL hash tables no longer use SXHASH for objects
2030 of all data types, but instead use an EQL hash for types for which
2031 EQUAL is the same as EQL.
2032 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2033 are significantly faster.
2034 * optimization: new STRING-OUTPUT-STREAM implementation is much
2035 faster for large outputs and conses 30% less on average.
2036 * enhancement: XREF information is now collected for references made
2037 to global variables using SYMBOL-VALUE and a constant argument.
2038 * enhancement: SIGINT now causes a specific condition
2039 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2040 * bug fix: FILE-POSITION used to signal an error in some cases where
2041 ANSI requires it to return NIL.
2042 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2043 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2044 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2046 * bug fix: bad type declaration in the CLOS implementation has
2047 been fixed. (reported by James Anderson)
2048 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2049 (thanks to Lutz Euler)
2050 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2051 required by the CLHS. (reported by Samium Gromoff)
2052 * bug fix: dead unbound variable references now signal an error.
2053 (reported by Marco Monteiro)
2054 * bug fix: / with an unused value was being deleted in safe code.
2055 (thanks to Marco Monteiro and Kevin Reid)
2056 * bug fix: number of characters that can be written onto a single
2057 line in a file is unlimited.
2058 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2059 been fixed by inhibiting interrupts for when GC is disabled.
2060 * bug fix: some interrupt safety issues with GETHASH, (SETF
2061 GETHASH), CLRHASH and REMHASH have been fixed.
2062 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2063 specifier no longer causes infinite recursion.
2064 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2065 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2066 * bug fix: an &environment argument with the correct variable information
2067 is passed to macros that are expanded during byte compilation.
2068 (reported by Samium Gromoff)
2069 * bug fix: a logic error was causing the hash function for bignums to
2070 have excessive amounts of collisions. (reported by Faré Rideau)
2071 * bug fix: modifying the contents of an array could change the return
2072 value of SXHASH on that array, which is only allowed for strings
2073 and bit vectors. (bug introduced in 0.9.16)
2074 * improvement: the x86-64/darwin port now passes all tests (except
2075 for the debugger tests) but should still be considered
2076 experimental until this is fixed.
2077 * improvement: a style-warning is signaled for CASE (etc) clauses with
2078 duplicate keys. (thanks to Kevin Reid)
2079 * improvement: macos/x86 and macos/x86-64 now use mach exception
2080 handlers for dealing with illegal instructions (for trapping and
2081 error handling) and memory protection violations (for GC).
2083 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2084 * new platform: experimental support for x86-64/darwin (MacOS).
2085 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2086 and getnameinfo sockets functions are used instead of gethostbyaddr
2087 and gethostbyname, on platforms where the newer functions are available.
2088 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2090 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2091 don't print the startup banner, but behave as if --noinform was passed
2092 as a command line argument. (thanks to Kevin Reid)
2093 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2094 * optimization: code using alien values with undeclared types is much faster.
2095 * optimization: the compiler is now able to open code SEARCH in more cases.
2096 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2097 * bug fix: using standardized COMMON-LISP special variables as loop
2098 variables no longer signals bogus package lock violations. (reported
2100 * bug fix: declaring local loop variables to be of a range-limited type
2101 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2102 (reported by Andras Simon)
2103 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2104 bugs remain on x86-64.)
2105 * bug fix: the #= and ## reader macros now interact reasonably with
2106 funcallable instances.
2107 * bug fix: type-checks for function arguments were compiled using the
2108 compiler policy settings of the wrong lexical environment (in 1.0.2
2110 * bug fix: SHADOW accepts characters as string designators, as required
2111 by the spec (thanks to Eric Marsden)
2112 * bug fix: fixed GC safety issues when foreign functions are called with
2113 non-base strings as arguments
2114 * bug fix: more consistent error output for fatal-compiler-warnings, like
2116 * bug fix: functions with proper names were showing up as NIL in
2117 backtraces (reported by Edi Weitz, regression in 1.0.2)
2119 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2120 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2121 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2122 produce more efficient code on the x86 if the compiler can determine
2123 that (+ INDEX <constant>) does not require a bounds check and FOO
2124 has an element type at least 8 bits wide.
2125 * bug fix: references to undefined variables are handled the same way
2126 in toplevel forms as in the normal compiler
2127 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2129 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2130 (thanks to Jon Buller)
2131 * improvement: faster compilation times for complex functions
2132 * improvement: added readlink support to SB-POSIX (thanks to Richard
2135 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2136 * improvement: experimental support for mach exception handling on
2137 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2139 * improvement: support for GBK external format.
2140 (thanks to Chun Tian (binghe))
2141 * improvement: the debugger now displays variables that have been closed
2142 over, in code compiled with (DEBUG 2) or higher
2143 * improvement: support for executable cores on NetBSD (thanks to
2145 * new feature: added a RESTART-FRAME debugger command
2146 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2147 be used to provide an implementation for FILE-POSITION on Gray streams
2148 (thanks to Eric Marsden)
2149 * new feature: add syslog, openlog and closelog support to SB-POSIX
2150 (thanks to Richard Kreuter)
2151 * optimization: the function call overhead in code compiled with
2152 a high DEBUG optimization setting is significantly
2153 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2154 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2155 (thanks to Tony Martinez)
2156 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2157 evaluated once (reported by Kevin Reid)
2158 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2159 works again (thanks to Kilian Sprotte)
2160 * bug fix: an error is signaled for tagbodies with duplicate tags
2161 (thanks to Stephen Wilson)
2162 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2163 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2164 stack frames from alien callbacks.
2165 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2166 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2167 65k pages (thanks to David Woodhouse)
2168 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2170 changes in sbcl-1.0.1 relative to sbcl-1.0:
2171 * new platform: FreeBSD/x86-64, including support for threading.
2172 * new feature: the compiler stores cross-referencing information
2173 about function calls (who-calls), macroexpansion (who-macroexpands)
2174 and special variables (who-binds, who-sets, who-references) for code
2175 compiled with (< SPACE 3). This information is available through the
2176 sb-introspect contrib.
2177 * new feature: users may subclass SEQUENCE, and have instances of
2178 these classes interoperate with standard Common Lisp functions if
2179 a number of methods are defined. (This feature is experimental
2180 and the interface subject to change based on feedback from SBCL
2181 users and the general community)
2182 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2183 x86/x86-64, rather than the previous fixed depth of 8
2184 * improvement: another pthread back-end of mutex "pthread-futex".
2185 * bug fix: non-ascii command-line arguments are processed correctly
2186 (thanks to Yaroslav Kavenchuk)
2187 * bug fix: non-required arguments were not passed correctly when a method
2188 defined using DEFMETHOD was called from a mop-generated method using
2189 CALL-NEXT-METHOD (reported by Pascal Costanza)
2190 * bug fix: recursion is now permitted in accessors through
2191 SLOT-UNBOUND. (reported by Pascal Costanza)
2192 * bug fix: an error was signaled at startup if the HOME environment
2193 variable was defined, but had an empty value (reported by Peter Van Eynde)
2194 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2195 signal a PROGRAM-ERROR, not a BUG.
2196 * bug fix: SB-POSIX:READDIR works when built with large file support.
2197 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2199 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2200 for better automatic indentation support. (thanks to Matt Pillsbury)
2201 * optimization: loading generic functions no longer takes O(n^2) time,
2202 proportional to the amount of methods in the generic function
2203 (reported by Todd Sabin and Jeremy Brown)
2204 * optimization: the FIND and POSITION family of sequence functions
2205 are significantly faster on arrays whose element types have been
2207 * improvements to the Windows port:
2208 ** Intermittent heap corruption problems have been fixed. (thanks
2209 to Alastair Bridgewater)
2210 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2212 ** Lisp is able to unwind foreign exception frames from alien
2213 callbacks. (thanks to Alastair Bridgewater)
2215 changes in sbcl-1.0 relative to sbcl-0.9.18:
2216 * improvement: experimental support for threading on FreeBSD/x86.
2217 (thanks to NIIMI Satoshi)
2218 * improvement: runtime option --dynamic-space-size can be used
2219 to set the size of the dynamic space reserved on startup.
2220 * improvement: floating point modes in effect are now saved in
2221 core, and restored on startup.
2222 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2223 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2224 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2225 threads are not running after *SAVE-HOOKS* have run.
2226 * improvement: writes to CLOS instance slots are type-checked in code
2227 compiled with (SAFETY 3)
2228 * improvement: floating-point exception handling on FreeBSD (thanks to
2230 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2231 (thanks to Zach Beane)
2232 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2234 * improvement: added support for the Shift-JIS external format.
2235 (contributed by NIIMI Satoshi)
2236 * improvement: callbacks are supported on Linux/PPC. (thanks to
2238 * bug fix: compiler bug triggered by a (non-standard) VALUES
2239 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2240 * bug fix: file compiler no longer confuses validated and already
2241 dumped structurres. (reported by Kaersten Poeck)
2242 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2243 fill-pointer signals a type-error as required. (thanks to
2245 * bug fix: disassemly of funcallable instances works.
2246 * bug fix: single stepping on PPC.
2247 * bug fix: fix thread-safety problems in the type system (generally
2248 manifesting as nonsensical errors like "STRING is a bad type specifier
2249 for sequences" or "The value 1 is not of type FIXNUM")
2250 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2251 (reported by Josip Gracin)
2252 * bug fix: an error is signaled for attempts to displace arrays with
2253 incompatible element types (thanks to Mario Mommer)
2254 * bug fix: more correct handling of wide characters in debug info
2255 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2256 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2257 and don't cause extra consing
2258 * optimization: MAP and MAP-INTO are significantly faster on vectors
2259 whose elements types have been declared.
2260 * Improvements to SB-SPROF:
2261 ** Support for allocation profiling
2262 ** Reduced profiling overhead, especially for long profiling runs
2263 * Improvements to the Windows port:
2264 ** floating point exceptions are now reported correctly.
2265 ** stack exhaustion detection works partially.
2266 ** more accurate GET-INTERNAL-REAL-TIME.
2267 ** better RUN-PROGRAM behaviour in case of errors in the child
2269 ** PROBE-FILE now simplifies pathnames correctly.
2270 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2271 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2272 1st 1970 (although time timezone data will be unreliable).
2273 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2275 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2276 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2277 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2279 * bug fix: two potential GC deadlocks affecting threaded builds.
2280 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2281 returns T (reported by Anton Kazennikov)
2282 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2283 with non-variable places
2284 * bug fix: remove a race condition in the setting of
2285 funcallable-instance functions, this should make threaded CLOS
2286 code more stable against memory faults.
2287 * bug fix: corruption of specials when unbinding is interrupted by an
2288 asynchronous unwind (reported by Hannu Koivisto)
2289 * improvement: the debugger will now also display local variables that
2290 are only used once, for code compiled with a DEBUG optimization quality
2293 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2294 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2295 * incompatible change: External-format support for FFI calls. The
2296 SB-ALIEN:C-STRING no longer implies an ASCII
2297 external-format. Instead the string is subject to external-format
2298 conversion. Additionally return values of type SB-ALIEN:C-STRING
2299 are by default of type (SIMPLE-ARRAY CHARACTER), not
2300 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2301 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2302 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2303 * incompatible change: SB-EXT package no longer contains the
2304 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2305 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2307 * incompatible change: the single-stepper is no longer available
2308 on Alpha, Mips and Sparc platforms.
2309 * minor incompatible change: the direct superclasses of
2310 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2311 not (STANDARD-OBJECT FUNCTION). This makes the
2312 class-precedence-lists of GENERIC-FUNCTION and
2313 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2315 * minor incompatible change: the default stream external format on
2316 non-unicode SBCL is no longer detected from the locale, but is always
2318 * new feature: Add a version of evaluator that uses an interpreter instead
2319 of the compiler. EVAL still uses the compiler by default, to switch it
2320 to use the interpreter, set the value of the variable
2321 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2322 * minor incompatible change: the single-stepper REPL has been merged
2323 with the normal debugger (see the "Stepping" heading of the debugger help
2324 for more details). The debugger command STEP will no longer switch
2325 to the single-stepper REPL.
2326 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2327 for a type now works.
2328 * bug fix: loading of default sysinit file works. (thanks to Leonid
2330 * bug fix: better detection of circularities in the file-compiler.
2331 (reported by Marco Monteiro)
2332 * bug fix: the CL pathname functions now work with files that have
2333 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2334 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2335 systems with Unix98 pty semantics.
2336 * bug fix: ASDF-INSTALL will now work with bsd tar.
2337 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2339 * bug fix: timers expiring in dead threads no longer cause a
2340 type-error (reported by Paul "Nonny Mouse").
2341 * bug fix: thanks to more lightweight single-stepper instrumentation,
2342 code compiled with (DEBUG 3) will compile and execute significantly faster,
2343 and will have more accurate type-inferencing than before
2344 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2345 whose bindings are modified
2346 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2347 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2348 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2349 CL:SOFTWARE-VERSION with proper version
2351 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2352 * feature: implemented the READER-METHOD-CLASS and
2353 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2354 as specified by AMOP.
2355 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2357 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2358 (thanks to Lutz Euler)
2359 * optimization: hashing of general arrays and vectors has been
2360 improved. (reported by Any Fingerhut)
2361 * enhancement: SB-INTROSPECT is now able to find definitions of
2362 profiled functions. (thanks to Troels Henriksen)
2363 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2364 as well, allowing compiler-macros for SETF-functions to expand.
2365 * enhancement: step-instrumentation no longer wraps known
2366 single-value functions with multiple-value context, allowing
2367 better type inference.
2368 * fixed bug #337: use of MAKE-METHOD in method combination now works
2369 even in the presence of user-defined method classes. (reported by
2370 Bruno Haible and Pascal Costanza)
2371 * fixed bug #339(c): if there are applicable methods not part of any
2372 long-form method-combination group, call INVALID-METHOD-ERROR.
2373 (reported by Bruno Haible)
2374 * fixed bug #361: the :FUNCTION initarg in the protocol for
2375 initialization of methods can now be used to override
2376 internally-produced optimized functions. (reported by Bruno
2378 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2379 system-provided lambda expression no longer cause warnings about
2380 unbound #:|pv-table| symbols.
2381 * bug fix: improved the handling of type declarations and the
2382 detection of violations for keyword arguments with non-constant
2384 * bug fix: potentially erronous calls to PATHNAME and
2385 MERGE-PATHNAMES were being flushed in some cases.
2386 (reported by Richard Kreuter)
2387 * bug fix: compiled calls to TYPEP were mishandling obsolete
2388 instances. (reported by James Bielman and Attila Lendvai)
2389 * bug fix: format strings with ~> without matching ~< no longer
2390 trigger an AVER, but signal an understandable error instead.
2391 (reported by Antonio Martinez)
2392 * bug fix: specifying an output-file without a pathname-type for
2393 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2394 of input-file instead of "fasl". (reported by Robert Dodier)
2395 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2396 (reported by James Y Knight).
2397 * bug fix: compiler-macros-function did not consider the environment
2398 argument for shadowing by local functions.
2399 * bug fix: compiler-macros expansion was inhibited by local INLINE
2401 * bug fix: inline expansions of known functions were subject to
2402 step-instrumentation in high debug policies, leading to problems
2403 with type-inference.
2404 * bug fix: compiler failed to differentiate between different CONS
2405 types in some cases.
2406 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2407 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2408 * bug fix: #368: incorrect use of expressed vs. upgraded array
2410 * bug fix: #306a: more precise unions of array types.
2411 * thread-safety improvements:
2412 ** CONDITION-WAIT could return early on Linux, if the thread was
2413 interrupted and subsequently continued with SIGCONT.
2414 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2416 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2417 * added support for the ucs-2 external format. (contributed by Ivan
2419 * minor incompatible change: pretty printing of objects of type
2420 (cons symbol) is, in the default pprint-dispatch-table, now
2421 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2423 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2424 called later in a class's lifetime, possibly as late as when the
2425 first instance of the class is created. Previously,
2426 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2427 class became finalizeable.
2428 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2429 for multibyte external-format streams. (thanks to "vbzoli")
2430 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2431 with :ALLOCATION :CLASS inherited from superclasses of the
2433 * fixed bug: anonymous classes can now be created using the :NAME
2434 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2435 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2436 * fixed bug: core-files saved with :EXECUTABLE T can again be
2437 executed when SBCL_HOME isn't set. (reported by James Knight)
2438 * fixed bug: toplevel LOCALLY forms with declarations could
2439 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2440 * fixed bug: printing from several different threads using different
2441 values of *print-case* could cause invalid output, due to
2442 some internal special variables of the printer not being bound
2443 thread-locally (reported by Max Mikhanosha)
2444 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2445 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2446 (reported by Pascal Costanza)
2447 * fixed bug: FINALIZE-INHERITANCE is called from
2448 REINITIALIZE-INSTANCE on classes when the class has previously
2449 been finalized, as required by AMOP.
2450 * minor code generation optimizations:
2451 ** better register allocation in CLOS dispatching functions
2452 ** overflow detection when coercing signed bytes to fixnums on x86-64
2453 ** is now implemented with one IMUL instruction instead of three shifts
2454 ** more efficient bit-vector access on x86 and x86-64
2455 ** more efficient access to raw structure slots on x86 and x86-64
2456 * fixed some bugs revealed by Paul Dietz' test suite:
2457 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2458 return its argument.
2460 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2461 * feature: thread support on Solaris/x86, and experimental thread support
2463 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2465 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2466 default method for SLOT-UNBOUND.
2467 * minor incompatible change: prevent the user from specializing the
2468 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2469 somewhat counter to the intent of the protocol, I (CSR) think, and
2470 additionally it just doesn't work in SBCL as currently
2471 implemented, thanks to optimizations (that are always valid for
2472 the other three SLOT-VALUEish functions, but not for the setter).
2473 * minor incompatible change: the :SB-LDB feature is now enabled by
2474 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2475 the low-level debugger.
2476 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2477 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2478 down to an SB-SYS:FD-STREAM, allowing direct communication in
2479 more cases. Temporary files and pipes are still used as a fallback
2481 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2482 on the non-reentrant C functions localtime(3) and gmtime(3).
2483 * bug fix: global optimization policy was not visible in LOCALLY and
2485 * bug fix: class objects can be used as specializers in methods.
2486 (reported by Pascal Costanza)
2487 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2488 with a type error. (reported by blitz_ on #lisp)
2489 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2490 failed with a type error. (reported by Pascal Bourguignon)
2491 * bug fix: merging pathnames against defaults with :DIRECTORY
2492 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2493 (reported by James Y Knight)
2494 * bug fix: saving large (>2GB) cores on x86-64 now works
2495 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2496 constant index and a (simple-array (signed-byte 32)) array
2497 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2498 error (patch by Robert J. Macomber)
2499 * feature: TIME now displays the amount of run-time spent in GC
2500 * bug fix: The debugger now does a better job of respecting
2501 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2502 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2503 workaround for bug 403.)
2504 * bug fix: floating point exception handling now works on FreeBSD
2505 (thanks to NIIMI Satoshi)
2506 * fixed some bugs revealed by Paul Dietz' test suite:
2507 ** MISC.641: LET-conversion were not supposed to work in late
2509 * improvements to the Win32/x86 port:
2510 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2511 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2513 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2514 * new feature: source path information is generated for macro-expansion
2515 errors for use in IDE's like Slime (thanks to Helmut Eller)
2516 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2517 * bug fix: compiler does not loop forever on an invalid type in
2519 * improvement: compilation of most CLOS applications is significantly
2521 * optimization: added a limited bytecode compiler for simple toplevel
2522 forms, speeding up compilation and FASL loading
2523 * bug fix: the statistical profiler now properly distinguishes anonymous
2526 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2527 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2528 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2529 into subclasses of the finalized class. Now user calls to
2530 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2531 system return before any subclasses are finalized.
2532 * minor incompatible change: The reader no longer ignores errors
2533 regarding non-existent packages in #+ and #- feature tests.
2534 * new feature: command line options --no-sysinit, --no-userinit to
2535 inhibit loading the corresponding init files
2536 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2537 for sending data through UDP sockets (thanks to François-René Rideau)
2538 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2539 error is signalled instead (thanks to François-René Rideau)
2540 * minor incompatible change: Error signalling behaviour of lexical
2541 operations violating package locks has changed slightly. Refer to
2542 documentation on package locks for details.
2543 * enhancement: EVAL can process IF-expressions without resorting to the
2545 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2546 constant-folded properly due to missing out-of-line functions.
2547 (reported by Mika Pihlajamäki)
2548 * bug fix: LISTEN sometimes returned T even in cases where no data was
2549 immediately available from the stream
2550 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2551 were reversed. (reported by Levente Mészáros)
2552 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2553 when given a vector displaced to an adjustable array. (reported
2555 * bug fix: derivation of float boundaries from numbers outside the
2556 appropriate float range (reported by John Wiseman)
2557 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2559 * bug fix: precomputing cache entries for generic functions with
2560 some subclasses of specializers as yet invalid does not attempt to
2561 fill a cache line with a negative offset. (reported by Levente
2563 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2564 allow condition class objects as arguments to DOCUMENTATION and
2565 (SETF DOCUMENTATION); only find and set documentation for
2566 structure names for the STRUCTURE doc-type. (suggested by Gary
2568 * improvements to the Win32/x86 port:
2569 ** (user-homedir-pathname) and default initialization file
2570 locations now know about the user's "Documents and Settings"
2571 directory (thanks to Yaroslav Kavenchuk)
2572 ** run-program is implemented (thanks to Mike Thomas)
2573 ** sockets support (thanks to Timothy Ritchey)
2574 ** better backtrace support (thanks to Alastair Bridgewater)
2575 ** sb-grovel supported
2576 ** asdf-install and sb-posix work somewhat
2577 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2578 * improvements to the Solaris/x86 port:
2579 ** works on Solaris 11/Solaris Express
2580 ** floating-point exception handling support
2581 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2582 * fixed some bugs revealed by Paul Dietz' test suite:
2583 ** REMOVE-METHOD returns its generic function argument even when
2584 the method is not one of the generic functions' methods.
2585 ** objects declared as MEMBER types can be admissible arguments to
2586 structure accessors.
2587 ** printing characters should simply be printed by the FORMAT ~:C
2589 ** compiler failure when compiling functions with hairy constant
2590 defaults for optional parameters.
2591 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2592 function, which is already optimized.
2594 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2595 * new platform: experimental support for SBCL x86/Darwin, including
2596 MacOS X 10.4.5 on Intel.
2597 * new feature: Unicode character names are now known to the system
2598 (through CHAR-NAME and NAME-CHAR).
2599 * new feature: the filesystem location of SBCL's core file is
2600 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2601 * minor incompatible change: the contrib modules SB-POSIX and
2602 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2603 this change is to make it easier to distribute
2604 location-independent binaries.
2605 * bug fix: as implied by AMOP, standardized classes no longer have
2606 slots named by external symbols of public packages. (reported by
2608 * optimization: calling functions via constant symbols -- as in
2609 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2610 via the function object as in (FUNCALL #'FOO).
2611 * optimization: on x86 and x86-64, the calling convention for the
2612 case of dealing with an unknown number of values has been altered
2613 to be friendlier to the prediction heuristics implemented,
2614 particularly with reference to CALL and RET pairing. (thanks to
2615 Alastair Bridgewater)
2616 * optimization: on x86, the code for access to thread-local symbol
2617 values and binding/unbinding of thread-local symbols is smaller.
2618 (thanks to Alastair Bridgewater)
2619 * enhancement: CONSTANTP is now able to determine constantness of
2620 more complex forms, including calls to constant-foldable standardized
2621 functions and some special forms beyond QUOTE.
2622 * fixed bug: occasional GC crashes on Solaris/x86
2623 * optimization: x86-64 supports stack allocation of results of simple
2624 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2625 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2626 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2627 (thanks to James Knight)
2628 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2629 by the standard (thanks to Stephen Compall)
2631 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2632 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2633 be used for bundling the runtime and the core file into one
2634 executable binary. This feature is not currently supported on all SBCL
2635 platforms. (thanks to James Bielman and NIIMI Satoshi)
2636 * new feature: a generational or ephemeral garbage collector is now
2637 the default on the PowerPC platform (both Linux and Darwin). The
2638 old Cheney (stop and copy) collector is a build-time option.
2639 (thanks to Cyrus Harmon, after Raymond Toy)
2640 * minor incompatible change: the method by which SBCL finds its
2641 contributed modules has changed; it no longer relies on symbolic
2642 links from an $SBCL_HOME/systems directory, but searches directly
2643 in the subdirectories of $SBCL_HOME.
2644 * enhancement: the dynamic heap size on the Linux/PPC platform is
2645 markedly larger, even using the older Cheney garbage collector.
2646 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2647 certain complicated string types. (reported by Gary King)
2648 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2649 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2650 * fixed bug: DOCUMENTATION on structures no longer signals an
2651 error if no structure type of the right name exists. (reported by
2653 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2654 applicable non-standard primary or :AROUND method on
2655 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2656 no longer cause unbound variable errors. (reported by Kevin Reid)
2657 * fixed bug: metacircle resolution in cases where methods have slots
2658 added before the slots from STANDARD-METHOD. (reported by Jean
2660 * fixed bug: the Power PC assembly code for calling into lisp
2661 sometimes computed its return address wrongly (depending on the
2662 15th bit of the address, fixed at link time). This used to
2663 manifest itself in a segmentation violation while building PCL.
2664 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2665 many others over the years)
2666 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2667 the stack pointer (treated as a signed integer) is negative.
2668 (thanks to Peter van Eynde)
2670 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2671 * new platform: experimental support for the Windows operating
2672 system has been added. (thanks to Alastair Bridgewater)
2673 * fixed several bugs in and robustified the PPC FFI (including
2674 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2675 * bug fix: allow non-simple string symbol names (reported by Paul
2677 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2679 * bug fix: saving a core corrupted callbacks on x86/x86-64
2680 * bug fix: closed a loophole in metacircularity detection and
2681 grounding in the PCL implementation of CLOS.
2682 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2683 (reported by tomppa on #lisp)
2684 * bug fix: clear the direction flag on Lisp -> C transitions, as
2685 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2686 (reported by Andrej Grozin and Hendrik Maryns)
2687 * optimization: major improvements to GC efficiency on GENCGC platforms
2688 * optimization: faster implementation of EQUAL
2689 * optimization: emit more efficient opcodes for some common
2690 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2691 * optimization: several other minor code-generation improvements on x86-64
2692 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2694 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2695 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2696 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2697 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2698 by ANSI as a generic function, and for consistency (SETF
2699 GENERIC-FUNCTION-NAME) is treated likewise.
2700 * fixed bug #233.b: make constraint propagation notice when a variable
2701 value is changed after it is referenced but before it is used
2702 * fixed bug #296: no more arbitrary behaviour from filenames with
2703 odd characters as --load arguments. (reported by Adam Warner)
2704 * fixed bug #390: :CHARACTER-SET pathname components now work as
2705 expected. (reported by Tim Daly Jr)
2706 * fixed bug #391: complicated :TYPE intersections in slot
2707 definitions no longer cause an error in PCL internals.
2708 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2709 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2710 returning the number of octets which would be written to the
2711 file-stream. (thanks to Robert J. Macomber)
2712 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2713 arguments to the internal stream functions. (thanks to David
2715 * bug fix: stack exhaustion is now handled on the x86/SunOS
2716 platform. (thanks to Daisuke Homma)
2717 * bug fix: more accurate ROOM results on GENCGC platforms
2718 * optimization: improved type inference for arithmetic-for
2719 index variables in LOOP
2720 * optimization: faster floating-point SQRT on x86-64
2721 * fixed some bugs revealed by Paul Dietz' test suite:
2722 ** DOCUMENTATION returns NIL instead of "" for method combinations
2723 that don't have a docstring
2725 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2726 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2727 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2728 therefore are not customizeable by user code (as seems to be at
2729 least permitted and maybe required by AMOP). As a consolation,
2730 however, the SBCL implementation of these functions now calls
2731 REINITIALIZE-INSTANCE as specified by AMOP.
2732 * bug fix: slot-definition documentation is propagated as per ANSI
2733 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2734 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2735 argument, as do eslotd initialization methods. (from Pascal
2736 Costanza's "Closer" project)
2737 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2738 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2740 * bug fix: it is now possible to have more than one subclass of
2741 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2742 (reported by Bruno Haible, Pascal Costanza and others)
2743 * bug fix: the dependent update protocol now works for generic
2744 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2745 and Pascal Costanza)
2746 * bug fix: condition-class instances corresponding to
2747 DEFINE-CONDITION forms are now created eagerly. (reported by
2748 Kalle Olavi Niemitalo on comp.lang.lisp)
2749 * bug fix: floating point printing is more accurate in some
2750 circumstances. (thanks to Simon Alexander)
2751 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2752 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2753 * bug fix: callbacks on OS X now preserve stack-alignment.
2754 (thanks to Cyrus Harmon)
2755 * enhancement: the x86-64 disassembler is much better at
2756 disassembling SSE instructions. (thanks to Lutz Euler)
2757 * enhancement: CHECK-TYPE on a variable now allows type-inference
2758 (thanks to Vincent Arkesteijn)
2759 * optimization: improved performance of EUC-JP external format.
2760 (thanks to NIIMI Satoshi)
2761 * optimization: performance improvements to IO on file streams of
2762 :ELEMENT-TYPE CHARACTER
2763 * optimization: much faster memory allocation on x86-64
2764 * optimization: faster garbage collections (latency and throughput)
2766 * optimization: faster bignum subtraction and division on x86 and x86-64
2767 (thanks to Lutz Euler)
2768 * optimization: more accurate type-inference for loops that use a
2769 floating point index variable or a negative step.
2771 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2772 * bug fix: add a workaround to SBCL looping infinitely at startup on
2773 Linux kernels with apparently buggy implementations of personality().
2774 (thanks to Svein Ove Aas)
2775 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2776 (thanks to David Lichteblau)
2777 * bug fix: local bindings shadow global symbol macros for
2778 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2779 * optimization: non-open coded uses of numeric comparison operators
2780 (e.g. >) no longer cons when called with more than one parameter
2781 on platforms supporting dynamic-extent allocation.
2782 * enhancement: saving cores with foreign code loaded is now supported
2783 on MIPS/Linux in addition to the previously supported platforms.
2784 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2785 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2786 * bug fix: division by zero in sb-sprof when no samples were collected
2787 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2788 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2789 (thanks to Alexander Kjeldaas)
2790 * new feature: ignoring the return values of destructive functions
2791 like NREVERSE signals a compile-time style-warning.
2792 (thanks to Kevin Reid)
2793 * new feature: the alignment of alien structure fields can be
2794 explicitly specified. (thanks to Cyrus Harmon)
2795 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2796 and dump core on SIGQUIT
2798 ** incompatible change: threads do not inherit values of specials
2799 from their parents (see manual)
2800 ** bug fix: threads stacks belonging to dead threads are freed by the
2801 next exiting thread, no need to gc to collect thread stacks anymore
2802 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2803 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2804 ** bug fix: dynamic variable and thread start related gc lossage
2805 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2807 * fixed some bugs revealed by Paul Dietz' test suite:
2808 ** SUBTYPEP is slightly more accurate on heinously complicated
2809 CONS types where some of the members have uncertain (in the
2810 NIL, NIL sense) type relationships to each other.
2812 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2813 no longer purified unless :PURIFY T is explicitly specified.
2814 ** Non-purified cores are significantly smaller than before
2816 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2817 * new feature: timers based on Zach Beane's excellent timer package
2818 * added support for the following external formats: koi8-u,
2819 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2820 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2821 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2822 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2823 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2824 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2825 * incompatible change: a threaded SBCL will no longer revert to
2826 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2827 * bug fix: interrupts are disabled until startup is complete; no
2828 more sigsegvs when receiving a signal to soon
2829 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2831 * bug fix: add a workaround for the memory randomization features in
2832 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2833 workaround will only be in effect on systems with the proc filesystem
2835 * bug fix: printing objects of type HASH-TABLE signals a
2836 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2838 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2839 have been running for over 50 days. (reported by Gilbert Baumann)
2840 * bug fix: the logic for getting names of functions gets less
2841 confused when confronded with alternate-metaclass
2842 funcallable-instances. (reported by Cyrus Harmon)
2843 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2844 consistent, even on internal alternate-metaclass objects.
2845 * bug fix: flush closure information collected by physical
2846 environment analysis prepass before the main pass. (bug reported
2848 * bug fix: compiler pack phase does not modify a hashtable, which is
2849 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2850 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2851 may be expanded. (reported by Alexander <malishev> on c.l.l)
2852 * bug fix: no more style-warnings when compiling code using LAST
2853 under high-SPEED low-SPACE settings. (reported by David Wallin
2855 * fixed some incompatibilities between SBCL's MOP and the MOP
2857 ** the METAOBJECT class is now implemented;
2858 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2859 STANDARD-OBJECT, as required;
2860 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2861 now compatible (as required by VALIDATE-SUPERCLASS); there
2862 remains a consistency requirement over the presence or absence
2863 of the FUNCTION class in the superclass list of finalized
2864 classes; see the manual for more details;
2865 ** the :AROUND method for COMPUTE-SLOTS on
2866 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2867 requested slot ordering.
2869 ** bug fix: parent thread now can be gc'ed even with a live
2871 ** bug fix: binding a special with PROGV to no value is not
2872 the same as that symbol not having been bound (thanks to
2874 ** bug fix: binding specials is thread safe (thanks to
2876 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2877 and SB-SPROF do not die with 'no handler for signal XX in
2878 interrupt_handle_now(..)' anymore
2879 ** bug fix: WITH-TIMEOUT works with multiple running threads
2880 * fixed some bugs revealed by Paul Dietz' test suite:
2881 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2882 the :method-class keyword argument.
2884 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2885 * new port: the Solaris operating system on x86 processors is now
2886 mostly supported, though some rough edges in the environment
2887 remain. (thanks to Daisuke Homma)
2888 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2889 space for its heap. (thanks to Thiemo Seufer)
2890 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2891 closures. (thanks to Thiemo Seufer)
2892 * minor incompatible change: eof selects abort in the debugger.
2893 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2894 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2896 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2897 deprecated, and will go away in a future revision of SBCL.
2898 * minor incompatible change: GC-ON and GC-OFF are no longer
2899 implemented with a counter, it does not matter how many times gc
2900 is switched on or off
2901 * bug fix: discriminating functions for generic function classes
2902 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2903 make invalid assumptions about method precedence order. (reported
2905 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2906 platforms. (thanks to Thiemo Seufer)
2907 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2908 * bug fix: correct pathname printing with printer escaping is on.
2909 (thanks to Kevin Reid)
2910 * bug fix: complex VOP definitions in "user-space" no longer trigger
2911 package locks. (reported by Zach Beane)
2912 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2913 for funcallable-instance functions, and is no different from
2915 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2916 characters in the current readtable. (reported by Nicholas Neuss)
2917 * bug fix: SUBTYPEP on various CONS types returns more a more
2918 accurate acknowledgment of its certainty.
2919 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2920 lists in some cases. This partially fixes bug 384.
2921 * flush all standard streams before prompting in the REPL and the
2923 * bug fix: signal handling and triggering gc do not conflict
2924 directly anymore, in particular a high frequency sb-sprof does
2925 not prevent gc from running
2926 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2927 approximation for timezone and DST information between the
2928 universal time epoch and the smallest negative 32-bit time_t.
2929 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2930 year 1899 so long as the encoded time is non-negative.
2931 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2932 the correct answer for non-constant rotate amounts when performing
2933 an inline 32-bit rotation.
2935 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2936 there is only one thread in the session
2937 ** bug fix: memory leak for streams created in one thread and
2938 written to in another
2939 ** bug fix: lockup when compiled with gcc4
2940 ** bug fix: race that allows the gc to be triggered when gc is
2942 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2943 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2945 ** bug fix: finished threads are gc'ed properly
2946 * fixed some bugs revealed by Paul Dietz' test suite:
2947 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2948 has arguments with a different set of applicable methods from
2949 the orignal arguments.
2950 ** The type error thrown by MAP now has a correct expected-type
2952 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2953 name a compiled function.
2954 ** Three MISC tests where a large bignum was improperly coerced to
2955 a float that couldn't represent that bignum during type
2956 derivation were fixed.
2957 ** SUBTYPEP can now handle types involving the negation of a
2958 list-form FUNCTION type.
2959 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2960 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2961 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2963 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2964 * New feature: Experimental support for bivalent streams: streams
2965 opened with :element-type :default now allow character and binary
2966 (unsigned-byte 8) I/O
2967 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2968 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2970 * bug fix: no more highly sporadic "couldn't check whether ~S is
2971 readable" when reading a stream and an interrupt hits in the middle
2972 of a select system call
2973 * compiler better recognizes complex arrays (reported by Eduardo
2975 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2976 for variables on SBCL built with linkage-tables. (reported by Luis
2978 * various error reporting improvements.
2979 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2980 (Thanks to Thiemo Seufer)
2981 * bug fix: nested reader invokations work correctly
2982 * bug fix: it is possible to have simultaneous references to foreign
2983 code and foreign data with the same name.
2985 ** added x86-64 support
2986 ** incompatible change: the threading api now works with thread
2987 objects instead of thread ids
2988 ** bug fix: threads are protected from signals and interruption when
2989 starting up or going down
2990 ** bug fix: a race where an exiting thread could lose its stack to gc
2991 ** bug fix: don't halt on infinite error in threads if possible
2992 ** fixed numerous gc deadlocks introduced in the pthread merge
2993 ** bug fix: fixed thread safety issues in read and print
2994 ** bug fix: debugger doesn't hang on session lock if interrupted at
2995 an inappropriate moment
2996 ** bug fix: run-program is now thread safe(r)
2997 ** bug fix: inner with-recursive-lock no longer releases the mutex
2998 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2999 * fixed some bugs revealed by Paul Dietz' test suite:
3000 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3001 EXPECTED-TYPE slots filled.
3002 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3004 ** MAKE-CONDITION accepts classes as type-designators.
3005 ** COMPILE may never return NIL.
3006 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3007 range before calling Unix time functions
3009 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3010 * numerous signal handling fixes to increase stability
3011 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3012 * minor incompatible change: we now correctly canonize default
3013 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3014 as per the MOP, rather than the historical (INITARG INITFUNCTION
3015 INITFORM). (reported by Bruno Haible)
3016 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3017 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3018 for more information.
3019 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3020 pathname is a directory pathname.
3021 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3022 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3024 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3025 :METACLASS argument in addition to a class name. (reported by
3026 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3027 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3028 (reported by Bruno Haible; patch from Gerd Moellmann)
3029 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3031 * bug fix: more cleanups to the floating point exception handling on
3032 x86-64 (thanks to James Knight)
3033 * bug fix: the compiler does not try to constant fold calls of
3034 COERCE and BIT-* functions when they return freshly constructed
3035 objects. (reported by Nikodemus Siivola and Paul Dietz)
3036 * optimization: improved the MIPS versions of generic (in the
3037 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3038 * optimization: direct conversion of (unsigned-byte 32) to floats on
3039 the PowerPC platform.
3040 * optimization: structure instances with raw slots now use less
3041 memory, and probably show better memory locality. (thanks to
3043 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3044 are treated as requests for stack allocation on the x86-64,
3045 Alpha-32, PPC and SPARC platforms.
3046 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3047 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3048 (thanks to Tony Martinez)
3050 ** gcing a dead thread can no longer lead to lockups
3051 ** threads block signals until they are set up properly
3052 ** errno is no longer shared by threads
3053 ** interrupt-thread restores the eflags register on x86
3054 ** fixed some lockups due to gc/thread interaction
3055 * fixed some bugs revealed by Paul Dietz' test suite:
3056 ** invalid dotted lists no longer raise a read error when
3057 *READ-SUPPRESS* is T
3058 ** signal an error if a symbol that names a declaration is used
3059 as the name of a type, or vice versa
3060 ** allow using the (declare (typespec var*)) abbreviation for
3061 (declare (type typespec var*)) with all type specifiers
3062 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3063 ** always return NIL from PPRINT-POP when OBJECT is NIL
3064 ** don't signal errors when pretty-printing malformed LABELS,
3065 FLET or MACROLET forms
3066 ** declarations in a DOLIST body are also in scope for the
3068 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3070 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3073 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3074 * fixed cross-compiler leakages that prevented building a 32-bit
3075 target with a 64-bit host compiler.
3076 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3077 opened with :IF-EXISTS :OVERWRITE.
3078 * fixed bug 281: error for an invalid qualifier in a short-form method
3079 combination method is not signalled until the faulty method is called.
3080 * bug fix: iteration variable type inferrer failed to deal with open
3081 intervals. (reported by Alan Shields)
3082 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3083 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3084 or more runtime options were provided to the sbcl binary.
3085 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3086 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3087 * optimization: there's now a fast-path for fixnum arguments in the
3088 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3089 * optimization: the code generated on x86-64 is more compact thanks
3090 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3091 * bug fix: floating-point exception handling now partly works on
3092 x86-64. (Thanks to James Knight)
3093 * improvement to the MIPS backend from Thiemo Seufer: C-style
3094 64-bit long long arguments and return values to alien functions
3096 * fixed some bugs revealed by Paul Dietz' test suite:
3097 ** the type-error signalled from WARN has a filled-in DATUM slot.
3098 ** the type-error required when a stream is not associated with
3099 a file has the stream as its datum.
3100 ** type-errors on single-floats on x86-64 no longer have
3101 :INVALID-OBJECT as the datum
3102 ** the type-errors signalled for invalid function names now have
3103 a correct expected type
3104 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3105 for structures defined with a :TYPE. Documentation strings for
3106 typed structures are no longer immediately discarded
3107 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3108 broadcast streams and synonym streams. FILE-LENGTH now also works
3109 on broadcast streams.
3111 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3112 * incompatible change: the --noprogrammer option, deprecated since
3113 version 0.7.5, has been removed. Please use the equivalent
3114 --disable-debugger option instead.
3115 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3117 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3118 inoperational for a while now) has been completely removed.
3119 * null lexical environments are now printed as #<NULL-LEXENV>,
3120 significantly reducing the amount of clutter in typical backtraces.
3121 * documentation on weak pointers, finalization, and after GC hooks
3122 has been added to the manual.
3123 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3124 as other specialized array types, is much faster. SUBSEQ and
3125 COPY-SEQ on such arrays have also been sped up.
3126 * optimization: EQL is now more efficient when at least other argument
3127 is known to be of type (OR FIXNUM (NOT NUMBER)).
3128 * fixed bug: the runtime is now less vulnerable to changes in the
3129 size of the SBCL object on OS X, and virtual memory is reserved for
3130 all spaces that need to be at a fixed address.
3131 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3132 * fixed bug: finalizers and after GC hooks that cause consing are now
3134 * fixed bug: compiler error messages and summaries are now printed to
3135 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3136 * fixed inference of the upper bound of an iteration variable.
3137 (reported by Rajat Datta).
3138 * fixed bug 211e: calling local functions with duplicated constant
3139 keyword argument no longer causes a bogus style warning about an
3141 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3142 ftype declaration to be disregarded. (reported by Dave Roberts)
3143 * fixed bug 373: caused by erronous compilation of references to alien
3144 variables in the runtime on ppc/darwin.
3145 * fixed bug 376: CONJUGATE type deriver.
3146 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3147 (reported by Baughn on #lisp)
3148 * a cross-compiler bug on non-x86 platforms has been identified and
3149 fixed. (thanks to Bruno Haible)
3150 * improvements to the MIPS runtime code for increased stability.
3151 (thanks to Thiemo Seufer)
3152 * increased the maximimum compact environment size to allow
3153 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3154 * partial workaround for bug 135: don't name the function we're
3155 calling for hairy cases of EVAL, so as not to accumulate one environment
3156 entry per call to EVAL. (reported by Kevin Reid)
3157 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3158 * optimization: type testing for non-vector arrays should be faster.
3159 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3161 * bug fix: setting 31st element of a bit vector to zero did not work
3163 * bug fix: redefining a class definition which failed due to a
3164 previous accessor / function clash now works (but see BUGS entry
3165 #380 for more problems in this area). (thanks to Zach Beane)
3166 * the long form of DEFINE-METHOD-COMBINATION disables method group
3167 checking when given a single method group with pattern *. (thanks
3169 * on x86 compiler supports stack allocation of results of simple
3170 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3171 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3172 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3173 * fixed some bugs related to Unicode integration:
3174 ** the restarts for recovering from input and output encoding
3175 errors only appear when there is in fact such an error to
3177 * fixed some bugs revealed by Paul Dietz' test suite:
3178 ** MISC.549 and similar: late transformation of unsafe type
3179 assertions into derived types caused unexpected code
3181 ** SCALE-FLOAT type deriver is less wrong.
3182 ** type derivers for EXP, LOG and similar functions compute result
3183 types for complex arguments better.
3184 ** (MISC.563) CONJUGATE type deriver works for very restricted
3186 ** out-of-line type testers for character strings are available.
3187 ** EQUAL compiler transform understands specialness of objects
3189 ** accessing double-floats stored on the stack now works on x86-64.
3190 ** debugger internals could sometimes create invalid lispobjs,
3191 resulting in GC crashes.
3192 ** MISC.548: type check weakening can convert required type into
3194 ** initialization forms for bindings are not in scope of free special
3197 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3198 * incompatible change: thread support for non-NPTL systems has
3199 been removed - locking is buggy and unreliable. A threaded
3200 SBCL build will now warn at startup and refuse to create
3201 new threads, unless futex support is detected in the kernel
3202 * incompatible change: the top level REPL now has only an ABORT
3203 restart associated with it, not TOPLEVEL and ABORT as it used to.
3204 TOP and TOPLEVEL are now available as debugger commands for
3205 returning to the top level.
3206 * incompatible change: forms evaluated in the REPL now use the
3207 global optimization policy.
3208 * incompatible change: user- and system-initialization files are
3209 no longer processed with LOAD, but by READ and EVAL; hence the
3210 global optimization policy, startup package, readtable, etc,
3212 * The .fasl file format number has been incremented because of
3213 various incompatible changes.
3214 * internal entry point details and argument counts no longer appear
3215 in backtraces unless explicitly requested by setting
3216 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3217 * built-in and standard functions no longer have names like "top
3218 level local call to FOO".
3219 * fixed bug 32: functions defined in non-null lexical environments
3220 now have more legible printed representation
3221 * fixed bug 33: functions defined in non-null lexical environemnts
3222 are now more amenable to inspection by INSPECT.
3223 * workaround for bug 354: XEPs no longer appear in backtraces unless
3224 explicitly requested.
3225 * fixed bug: receiving the signal which results from attempting to
3226 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3227 SIGBUS on other *BSDs) on architectures where the C stack is also
3228 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3229 to debugger confusion or wild instability. (reported by Cheuksan
3231 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3232 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3233 (reported by Lutz Euler)
3234 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3235 compiled code. (reported by Paul Dietz)
3236 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3237 specialized parameter to a method to something that is not TYPEP
3238 the specializer is now possible.
3239 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3240 face of package deletion.
3241 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3242 pathname. (reported by David Tolpin on c.l.l)
3243 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3244 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3245 STRING-STREAM and FILE-STREAM, respectively.
3246 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3247 than previously; in addition, its test suite is now run on build.
3248 (thanks to Luke Gorrie)
3249 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3250 * optimization: added a immediate representation for single-floats
3252 * fixed some bugs revealed by Paul Dietz' test suite:
3253 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3254 ** attempting to create a package with a colliding nickname causes
3255 correctable errors to be signalled.
3256 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3257 ** several x86-64 backend bugs related to sign-extension of immediate
3260 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3261 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3262 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3264 * fixed loading of multiply forward-referenced layouts.
3265 (thanks to Cheuksan Wang)
3266 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3267 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3268 (see COMPILE-FILE documentation for details of :PRINT option)
3269 * fixed bugs 19 and 317: fixed-format floating point printing is
3270 more accurate. This also fixes a bug reported by Adam Warner
3271 related to the ~@F format directive.
3272 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3274 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3275 dispatch table if the from-char is a dispatch macro character.
3276 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3277 by the wordsize no longer ignore the last word. (reported by Lutz
3279 * fixed bug in type checking of dynamic-extent variables. (reported
3281 * optimization: sequence traversal functions use their freedom to
3282 coerce function designators to functions.
3283 * optimization: code with many calls to CLOS methods specialized on
3284 CLOS classes has had redundant type checks removed.
3285 * optimization: added declarations to speed up operations that access
3286 the internal character database (for example STRING-UPCASE)
3287 * optimization: comparison operations between floats and sufficiently small
3288 fixnums no longer create extra rationals
3289 * fixed some bugs related to Unicode integration:
3290 ** portions of multibyte characters at the end of buffers for
3291 character-based file input are correctly transferred to the
3292 start of the buffer at the next read.
3293 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3294 passing it through to OPEN.
3295 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3296 argument given to internal calls to OPEN.
3297 ** the built-in comment readers (introduced by character sequences
3298 ";" and "#|") are more forgiving to encoding errors; they will
3299 STYLE-WARN and then attempt to resync the stream at a character
3300 boundary. (thanks to Teemu Kalvas)
3301 * fixed some bugs in the x86-64 port:
3302 ** Negative short int return values from c-calls are sign-extended
3304 ** The stack is aligned to 16-bytes for c-calls, as required by
3305 the ABI. (thanks to Cheuksan Wang)
3306 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3307 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3308 for enums. (thanks to Vincent Arkesteijn)
3309 ** Multiple small optimizations and bugfixes for floating point
3311 * fixed some bugs revealed by Paul Dietz' test suite:
3312 ** Space, Tab, Linefeed, Return and Page have the invalid
3313 secondary constituent character trait.
3314 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3316 ** WITH-INPUT-FROM-STRING should only update the index place on
3318 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3319 works more reliably.
3320 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3321 with one-dimensional arrays with fill pointers.
3322 ** TYPE-OF failed on a complex with an integer realpart and a
3324 ** compiler failure during type inference for the code of form
3325 (IF (EQL X (THE ...)) ...) (MISC.535).
3327 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3328 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3329 platform. The port supports 61-bit fixnums, large memory spaces
3330 and reloading shared object files.
3331 * enhancement: saving cores with foreign code loaded is now
3332 supported on ppc/Darwin in addition to the previously supported
3334 * enhancement: the statistical profiler now walks deeper into the
3335 call stack for more meaningful call-graphs and accrued time
3336 reports (x86/x86-64 only). It also now reports time spent in
3338 * enhancement: it is now possible to trace most individual methods
3339 of a generic function in addition to tracing the generic function
3341 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3343 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3344 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3345 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3346 produces an error. (thanks to Vincent Arkesteijn)
3347 * bug fix: NAMESTRING on pathnames with :WILD components in their
3348 directories works correctly. (thanks to Artem V. Andreev)
3349 * fixed bug 125: compiler preserves identity of closures. (reported
3351 * bug fixed: functions with &REST arguments sometimes failed with
3352 "Undefined function" when compiled with (DEBUG 3). (reported by
3354 * bug fix: overflow during compiling of setting element of a bit
3355 vector with constant index and value. (reported by Timmy Douglas)
3356 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3357 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3358 * on x86 compiler partially supports stack allocation of dynamic-extent
3360 * GO and RETURN-FROM do not check the extent of their exit points
3361 when compiled with SAFETY 0.
3362 * fixed some bugs related to Unicode integration:
3363 ** encoding and decoding errors are now much more robustly
3364 handled; it should now be possible to recover even from invalid
3365 input or output to the terminal. (thanks to Teemu Kalvas)
3366 ** provided a first cut at implementing STRING-TO-OCTETS and
3367 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3368 ** altered the SB-MD5 contributed module slightly, changing the
3369 interface just enough for it to be supportable for builds where
3370 lisp characters are not eight bits.
3371 * fixed some bugs revealed by Paul Dietz' test suite:
3372 ** the FORMATTER-generated functions for ~V[ conditionals require
3373 the correct number of arguments.
3374 ** READ-FROM-STRING returns the mandated second value when applied
3375 to displaced strings.
3376 ** the #\Rubout and #\Backspace characters are treated as invalid
3377 constituent characters by the tokenizer.
3379 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3380 * new feature: reloading changed shared object files with
3381 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3382 * new feature: references to foreign variables and functions
3383 can now be compiled and loaded before the corresponding shared
3384 object file is loaded, as long as the foreign definitions are
3385 available at runtime.
3386 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3387 supported. (thanks to Dan Debertin)
3388 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3389 just keywords. (thanks to Vincent Arkesteijn)
3390 * fixed bug #331: structure-class instances corresponding to
3391 DEFSTRUCT forms are now created eagerly.
3392 * fixed bug #345: backtraces from calls to undefined functions work
3393 on x86 as well. Related bug #61 is now also partially fixed on x86
3394 (backtraces from throws to unknown catch tags.)
3395 * bug fix: lambda-list parsing is now stricter vrt. order and number
3396 of lambda-list keywords.
3397 * bug fix: as specified by AMOP, an error is signalled if a
3398 class-option appears multiple times in a DEFCLASS form. (reported
3400 * bug fix: RANDOM can be compiled when the compiler derives the type
3401 of its numeric argument as a disjoint set of small integers.
3402 (reported by Paul Dietz)
3403 * bug fix: starting a core saved with shared objects loaded when
3404 those objects are not available no longer causes threaded SBCL to
3405 hang. (reported by Sean Ross)
3406 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3408 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3409 argument, which must always be NIL. (reported by Kalle Niemitalo)
3410 * bug fix: printing 1.0d+23 no longer results in an error.
3411 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3412 * bug fix: structure slot setters preserve evaluation order. (thanks
3414 * fixed some bugs related to Unicode integration:
3415 ** RUN-PROGRAM can allow its child to take input from a Lisp
3416 stream. (reported by Stefan Scholl)
3417 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3418 locales. (reported by Ken Causey)
3419 * fixed some bugs revealed by Paul Dietz' test suite:
3420 ** INCF, DECF and REMF evaluate their place form as specified in
3422 ** FORMATTER expands ~{ ~} iteration directives with V or #
3423 parameters correctly.
3424 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3425 consequent uses no arguments correctly.
3426 ** the system has a partial understanding of the (COMPLEX RATIO)
3428 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3431 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3432 * new feature: a build-time option (controlled by the :SB-UNICODE
3433 keyword feature, enabled by default) for building the system with
3434 support for the entire 21-bit character space defined by the
3436 * new feature: the system now has rudimentary external-format
3437 support; the primary user-visible change at this time is that
3438 characters with the high bit set (such as lower-case-e-acute) will
3439 print correctly to a terminal in a UTF-8 environment.
3440 * minor incompatible change: BASE-CHAR no longer names a class;
3441 however, CHARACTER continues to do so, as required by ANSI.
3442 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3443 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3444 has been moved to the SB-EXT package (temporarily re-exported from
3446 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3447 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3449 * fixed bug #351: better error-handlind and reporting for malformed
3451 * fixed bug #350: bignum-printing is now more memory-efficient,
3452 allowing printing of very large bignums, eg. (expt 2 10000000).
3453 (reported by Bruno Haible)
3454 * fixed bug #302: better primitive-type selection for intersection
3456 * fixed bug #308: non-graphic characters now all have names, as
3457 required. (reported by Bruno Haible)
3458 * bug fix: redefining a class with different superclasses now correctly
3459 removes it from the direct-subclasses of its previous superclasses.
3460 (reported by David Morse)
3461 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3462 new value now works. (reported by Bruno Haible)
3463 * bug fix: correct canonicalization of multiple non-standard slot
3464 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3465 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3466 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3467 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3468 now exists, an signals an error.
3469 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3470 during macroexpansion for non-iteration variables as well. (reported
3471 by Bruno Haible for CMUCL)
3472 * bug fix: Cyclic structures and unprintable objects in compiler
3473 messages no longer cause errors. (reported by Bruno Haible)
3474 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3475 and READ-FROM-STRING all now return a primary value of NIL if
3476 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3477 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3478 (reported by Bruno Haible for CMUCL)
3479 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3480 do not designate a condition. (reported by Bruno Haible for
3482 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3483 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3484 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3485 permitting resolution in favour of any of the conflicting symbols.
3486 (reported by Bruno Haible for CMUCL)
3487 * bug fix: EQUAL compiler optimizations is less aggressive on
3488 strings which can potentially compare true despite having distinct
3489 specialized array element types.
3490 * bug fix: unit enumerations can be defined without dividing by
3491 zero. (thanks to Vincent Arkesteijn)
3492 * FORMAT compile-time argument count checking has been enhanced.
3493 (report from Bruno Haible for CMUCL)
3494 * a partial workaround for the bug 262: the compiler does not try to
3495 inline-expand a local function doing RETURN-FROM from a deleted
3496 BLOCK. (thanks to Peter Denno for the bug report and to David
3497 Wragg for the simple test case)
3498 * fixed some bugs revealed by Paul Dietz' test suite:
3499 ** RENAME-PACKAGE allows all package designators as new package
3501 ** constraint propagation and lambda variable substitution are
3502 more cautious in dealing with partially deleted code.
3503 ** compiler sometimes lost reoptimization passes.
3504 ** CERROR, given a condition as condition designator, passes its
3505 remaining arguments to the continue format control without
3507 ** Case-altering FORMAT directives work correctly on non-ASCII
3509 ** The REAL type specifier handles bounds outside the floating
3510 point ranges without signalling FLOATING-POINT-OVERFLOW.
3511 ** Functions with IR1-transformations can create intercomponent
3512 references to global functions.
3513 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3515 ** FORMAT ~R treats a nil value for its first parameter correctly.
3517 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3518 * enhancement: saving cores with foreign code loaded is now
3519 supported on x86/NetBSD and sparc/Linux in addition to the previously
3520 supported platforms.
3521 * bug fix: on some platforms repeated installations caused multiple
3522 copies of HTML documentation to be installed -- should not happen
3523 any more. (reported by Stefan Scholl)
3524 * bug fix: parsing self-recursive alien record types multiple times
3525 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3526 original patch by Helmut Eller for CMUCL)
3527 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3528 (thanks to Richard Kreuter)
3529 * bug fix: defining classes whose accessors are methods on existing
3530 generic functions in other (locked) packages no longer signals
3531 bogus package lock violations. (reported by François-René Rideau)
3532 * bug fix: special variables as DEFMETHOD parameters no longer have
3533 associated bogus type declarations. (reported by David Wragg and
3535 * bug fix: read-write consistency on streams of element-type
3536 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3537 * bug fix: redefiniton of the only method of a generic function with
3538 no DEFGENERIC no longer emits a full WARNING. In addition,
3539 redefinition of generic functions with no DEFGENERIC to an
3540 incompatible lambda list now signals an error. (thanks to Zach
3542 * bug fix: DEFGENERIC now works even when there's a function of the
3543 same name in an enclosing lexical environment. (thanks to Zach
3545 * fixed compiler failure, caused by instrumenting code during
3546 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3547 * optimization: added loop analysis and improved register allocation
3548 * fixed some bugs revealed by Paul Dietz' test suite:
3549 ** POSITION on displaced vectors with non-zero displacement
3550 returns the right answer.
3551 ** (SIMPLE-STRING) is a valid type specifier for sequence
3553 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3555 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3556 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3558 ** The justification version of the FORMAT ~< directive treats
3559 non-zero minpad parameter correctly.
3561 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3562 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3563 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3564 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3565 the supported interface.
3566 * new feature: Single-stepping of code compiled with DEBUG 2 or
3567 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3568 * new feature: saving cores with foreign code loaded is now
3569 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3570 Timothy Moore's work for CMUCL)
3571 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3572 parameters to * instead of NIL if no initform is supplied.
3573 (reported by Johan Bockgaard)
3574 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3575 correctly when FUNCALL appears as the car of the form. Note:
3576 despite this FUNCALL forms are not currently subject to
3577 compiler-macro expansion. (port of Raymond Toy's fix for the
3578 same from CMUCL, reported by Johan Bockgaard)
3579 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3580 (thanks for Teemu Kalvas)
3581 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3582 case instead of terminating the iteration (thanks for Julian
3583 Squires, Sean Champ and Raymond Toy)
3584 * bug fix: incorrect expansion of defgeneric that caused a style
3585 warning. (thanks for Zach Beane)
3586 * bug fix: slot accessor effective method computation works properly
3587 for classes with multiple non-standard applicable methods on
3588 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3589 * on x86 compiler supports stack allocation of results of LIST and
3590 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3591 CMUCL implementation by Gerd Moellmann)
3592 * fixed some bugs revealed by Paul Dietz' test suite:
3593 ** FORMAT strings with both the ~<~:;~> form of the justification
3594 directive and pretty-printing directives cause an error.
3596 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3597 * incompatible change: the internal functions
3598 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3599 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3600 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3601 instead of the old functions.
3602 * new feature: on platforms where "dladdr" is available foreign
3603 function names now appear in backtraces. (based on Helmut Eller's
3605 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3606 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3608 * documentation: ASDF manual is now distributed with SBCL.
3609 * bug fix: SBCL can now load its contributed modules with REQUIRE
3610 even if the system-provided entries have been removed from
3611 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3613 * bug fix: backtraces involving undefined functions or assembly
3614 routines are more informative. (thanks to Brian Downing)
3615 * bug fix: mutually referent alien structures now work correctly.
3616 (reported by Rick Taube)
3617 * bug fix: structures defined by WITH-ALIEN can be referred to
3618 within other definitions in the same WITH-ALIEN.
3619 * bug fix: division operators (MOD, TRUNCATE and the like) with
3620 constant zero divisors and integer dividends no longer generate
3622 * bug fix: provide default methods for INPUT-STREAM-P and
3623 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3624 * bug fix: improve the detection and resolution of MOP metacycles
3625 (where effective method computation depends on the generic function
3626 having its effective method computed). (reported by Bruno Haible)
3627 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3628 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3629 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3630 * bug fix: pathnames with relative directory components can be
3631 represented relative to default pathnames.
3632 * optimization: in taking the GCD of bignums, reduce the two bignums
3633 to approximately the same size (using Euclid's algorithm) before
3634 applying the more sophisticated binary GCD. (thanks to Juho
3636 * optimization: COUNT on bitvectors now operates word-at-a-time.
3637 * optimization: ASH with a positive, but not necessarily constant,
3638 (leftwards) shift, when in a modular context, is compiled to a
3640 * fixed some bugs revealed by Paul Dietz' test suite:
3641 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3642 if the corresponding argument is NIL.
3643 ** FORMAT directives accepting a minpad parameter treat negative
3645 ** literal commas as character parameters to FORMAT directives are
3647 ** literal spaces directly after ~<Newline> directives within a
3648 format-logical-block (~:< ~@:>) do not induce :FILL-style
3649 conditional newlines.
3650 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3651 as specified: it no longer includes conditional newlines).
3652 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3654 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3655 :PER-LINE-PREFIX argument does not evaluate to a string.
3657 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3658 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3659 the manual for details; for now, package locks can be disabled by
3660 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3661 if no major problems are found then it is likely that they will be
3662 compiled in unconditionally.
3663 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3664 unsupported operators on all platforms. To load a shared library
3665 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3666 object file, link it into a shared library outside of SBCL and
3667 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3669 * bug workaround: ROOM T and the GC were not working together
3670 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3671 reporting facility aren't preserved. That reporting has been
3672 disabled, so now until and unless someone figures out how to make it
3673 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3674 * minor incompatible change: as threatened around sbcl-0.8.0, the
3675 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3676 The symbols are also exported from SB-PCL for backwards
3677 compatibility, but more so than before SB-PCL should be treated as
3678 an implementation-internal package.
3679 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3681 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3682 It is known as of this release not to work on the Alpha, however.
3683 * fixed bug #167: errors signalled due to illegal syntax in method
3684 bodies are now more legible.
3685 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3686 designators and can hence be used with TYPEP.
3687 * fixed bug #333: CHECK-TYPE now ensures that the type error
3688 signalled, if any, has the right object to be accessed by
3689 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3690 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3691 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3693 * fixed bug #334: programmatic addition of slots using specialized
3694 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3695 and :ALLOCATION :CLASS slots.
3696 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3697 float exponents. (rereported by Peter Seibel)
3698 * fixed a bug: #\Space (and other whitespace characters) are no
3699 longer considered to be macro characters in standard syntax by
3700 GET-MACRO-CHARACTER.
3701 * fixed bug: initialization of condition class metaobjects no longer
3702 causes an instance of the condition to be created. (reported by
3704 * fixed bug: it is now possible to have slots such that
3705 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3706 description is neither :INSTANCE nor :CLASS.
3707 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3708 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3709 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3710 non-standard SLOT-DEFINITION-ALLOCATION values.
3711 * fixed bugs: various race conditions handling exiting threads.
3712 CL-PPCRE's thread torture test now passes.
3713 * fixed arguably-a-bug: GC time proportional to number of threads in
3714 system even when most of them are idle
3715 * optimization: improved performance of BIT and SBIT on bit-vectors.
3716 * .fasl file incompatibility: The fasl file version number has
3717 been incremented because of changes associated with package locks.
3719 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3720 * minor incompatible change: the system no longer provides
3721 optimization hints (conditions which are TYPEP
3722 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3723 mode; these hints are still emitted when higher SPEED optimization
3725 * new contrib module: a sampling profiler (profiling by statistical
3726 sampling, rather than by instrumenting functions) is available as
3727 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3728 * the behaviour of the standard function ED is now customizeable by
3729 third parties through a hook variable: see ED's documentation
3730 string for information on the protocol.
3731 * the compiler no longer emits efficiency notes for (FUNCALL X)
3732 when the type of X is uncertain under default optimization
3734 * fixed bug 276: mutating a binding of a specialized parameter to a
3735 method to something that is not TYPEP the specializer is now
3737 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3738 exhibit the required behaviour on the x86 platform. (thanks to
3739 Peter van Eynde, Eric Marsden and Bruno Haible)
3740 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3741 even for difficult arguments. (reported by Peter Graves)
3742 * fixed bug 141a: the backquote printer now descends quoted
3744 * fixed another bug in backquote printing: no more destructive
3745 modification of the form's list structure. (reported by Brian
3747 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3748 move between its address being taken and the call to
3749 interrupt_thread, fixing a crashing race condition.
3750 * the SB-POSIX contrib implementation has been adjusted so that it
3751 no longer exhibits ridiculously poor performance when constructing
3752 instances corresponding to C structs.
3754 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3755 * minor incompatible change: the sb-grovel contrib now treats C
3756 structures as alien (in the sense of SB-ALIEN) objects rather than
3757 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3758 has implications for memory management of client code
3759 (sb-grovel-returned objects must now be manually managed) and for
3760 type safety (alien objects now have full types).
3761 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3762 used to control emission of compiler diagnostics, rather than the
3763 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3764 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3765 quality should be considered deprecated.
3766 * install.sh now installs the user manual as well
3767 * (not quite a new documentable feature, but worth considering in
3768 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3769 beginnings of a semantically meaningful condition hierarchy is
3770 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3772 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3773 designator as the defaults argument.
3774 * fixed bug: Displaced arrays whose displaced-to array has become
3775 too small now cause ARRAY-DIMENSION to signal an error, providing
3776 for safer bounds-checking. (reported by Bruno Haible)
3777 * fixed bug: DEFCLASS slot definitions with identical :READER and
3778 :WRITER names now signal a reasonable error. (reported by Thomas
3780 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3782 * fixed bug: Invalid slot specification errors now print correctly.
3783 (thanks to Zach Beane)
3784 * fixed bug 320: Shared to local slot value transfers in class
3785 redefinitions now happen corrently from superclasses as
3786 well. (reported by Bruno Haible)
3787 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3789 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3790 improper lists correctly. (reported by Bruno Haible)
3791 * fixed bug 313: source-transform for <fun-name> was erroneously
3792 applied to a call of a value of a variable with name <fun-name>.
3793 (reported by Antonio Menezes Leitao)
3794 * fixed bug 307: The obsolete instance protocol ensures that
3795 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3796 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3797 remove dead unknown-values globs from the middle of the stack.
3798 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3799 easier to resume long computations after using *BREAK-ON-SIGNALS*
3800 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3801 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3802 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3803 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3804 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3805 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3807 * fixed a (fairly theoretical) bug in string printing: if
3808 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3809 does not have array-element-type equal to the most general string
3811 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3812 function name. (thanks to Nikodemus Siivola)
3813 * fixed bug: compile-time format string checker failed on
3814 non-closed ~{. (reported by Thomas F Burdick)
3815 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3816 don't warn on legal loop code involving more than one aggregate
3817 boolean. (thanks to Nikodemus Siivola)
3818 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3819 in keyword position to MAKE-PACKAGE was not being reported as
3821 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3822 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3824 * fixed bugs 280 and 312: the checking for multiple definitions in a
3825 file is less likely to become confused by uses of inline
3827 * fixed bug: the #S reader macro performs the keyword coercion
3828 specified for slot names. (reported by Kalle Niemitalo)
3829 * fixed bug: lambda lists may contain symbols whose names start with
3830 & but are not lambda-list-keywords; their occurrence triggers a
3832 * fixed bug 321: define-method-combination argument lambda lists do
3833 not cause invalid code to be generated when &optional or &aux
3834 variables have default values. (reported by Bruno Haible)
3835 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3836 have CLOS classes; this appears also to have fixed reported
3837 instability in stack exhaustion detection.
3838 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3839 MUFFLE-WARNING when no associated restart is present is now
3841 * optimization: rearranged the expansion of various defining macros
3842 so that each expands into only one top-level form in a
3843 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3845 * optimization: used a previously little-used slot in symbols to
3846 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3848 * fixed some bugs revealed by Paul Dietz' test suite:
3849 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3851 ** Fixed an optimization bug related to inheritance of initforms
3852 from local to shared slots.
3853 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3854 ** CAST optimizer forgot to flush argument derived type.
3855 ** print/read consistency on floats is now orders of magnitude
3856 more likely. (thanks also to Bruno Haible for a similar report
3858 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3859 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3860 for objects of type REAL. Make it so.
3861 ** SXHASH is specified (infelicitously) to respect similarity,
3862 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3863 it so. (thanks to Markus Ziegler)
3864 ** on the Alpha, the compiler succeeds in compiling functions
3865 returning a known number of arguments greater than 63.
3866 ** fixed handling of invalid NIL arguments in keyword position
3868 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3870 ** provided a readably-printable representation for RANDOM-STATE
3872 ** ensured that pathnames, where they have a namestring, always
3873 print using #P"..." syntax.
3875 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3876 * Support for the forthcoming 2.0 version of the NetBSD kernel
3877 running on x86 hardware has been added. (thanks to Perry
3878 E. Metzger most immediately, and others for their past work)
3879 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3880 current release version; SBCL's OpenBSD support had been broken
3881 since about the time of OpenBSD's switch to ELF binary format.)
3882 * [placeholder for DX summary]
3883 ** user code with &REST lists declared dynamic-extent, under high
3884 speed or space and low safety and debug optimization policy.
3885 * The manual has been converted to Texinfo format and the debugger
3886 chapter from the cmucl manual has been added.
3887 * A facility has been added to extract documentation strings from
3888 sbcl and store them as Texinfo-formatted snippets for inclusion in
3889 the manual (via Texinfo's @include directive)
3890 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3891 the test case to Dave Roberts)
3892 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3893 pointers. (reported by Sean Ross)
3894 * bug fix: PROFILE output is printed nicely even for large numerical
3895 values. (thanks to Zach Beane)
3896 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3897 greater than 32 handle EOF correctly.
3898 * bug fix: on X86 an immediate argument of the IMUL instruction is
3899 correctly printed in disassembly. (thanks to Lutz Euler)
3900 * bug fix: class slots in redefined classes preserve their old
3901 values. (thanks to Bruno Haible and Nikodemus Siivola)
3902 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3903 succeeds. (reported by Marco Baringer)
3904 * fixed some bugs revealed by Paul Dietz' test suite:
3905 ** READ-SEQUENCE now works on ECHO-STREAMs.
3906 ** RATIONALIZE works more according to its specification. (thanks
3909 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3910 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3911 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3912 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3913 should matter to you only if you rebind the printer control
3914 variables and then find you want different bindings in the
3915 debugger than in the ordinary execution of your program.)
3916 * The runtime build system has been tweaked to support building
3917 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3918 assembler and linker. (thanks to Nikodemus Siivola)
3919 * Unbound, undefined, undeclared variables now trigger full
3920 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3921 more often programmer error than deliberate exploitation of undefined
3923 * optimization: the hash algorithm for strings has changed to one
3924 that is less vulnerable to spurious collisions. (thanks to Juho
3926 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3927 needless bounds checking. (thanks to Juho Snellman)
3928 * optimization: implemented multiplication as a modular
3929 (UNSIGNED-BYTE 32) operation on the PPC backend.
3930 * fixed some bugs revealed by Paul Dietz' test suite:
3931 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3933 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3934 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3935 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3937 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3939 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3941 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3942 their output stream on EOF from read.
3943 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3944 have been read to end-of-file.
3945 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3947 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3948 description of determination of which consecutive characters
3950 ** Printing the "Space" character with escaping on now yields "#\\ ",
3951 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3952 ** Reading floating-point numbers with *READ-BASE* set to a number
3953 less than 10 works correctly.
3954 ** Reading floating-point numbers with *READ-BASE* set to a number
3955 more than 10 works correctly.
3956 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3957 the readtable currently in effect.
3959 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3960 * minor incompatible change: parsing of namestrings on a physical
3961 (Unix) host has changed; numbers after the final #\. in a
3962 namestring are no longer interpreted as a version field. This is
3963 intented to be largely invisible to the user, except that the
3964 meaning of the namestring "*.*.*" has changed: it now refers to a
3965 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3966 should usually be replaced by
3967 (make-pathname :name :wild :type :wild :version :wild)
3968 with the added benefit that this is more likely to be portable.
3969 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3970 option to OPEN now signals an error if the file being opened
3971 exists; this may have an impact on existing code.
3972 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3973 signals received, on the PowerPC platforms (both Linux and
3974 Darwin). (thanks to Pierre Mai for pointing out the location of
3976 * several fixes on OS X: The system now builds and runs cleanly on
3977 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3978 (thanks to Brian Mastenbrook)
3979 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3980 second-resolution: integer multiples of 1/3600 between -24 and 24.
3981 (thanks to Vincent Arkesteijn)
3982 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3983 type when called with 1 argument; PEEK-CHAR checked type of
3984 PEEK-TYPE only after having read first character from a
3985 stream. (reported by Peter Graves)
3986 * bug fix: the garbage collector now has much better locality
3987 behaviour, and in particular no longer treats all memory as being
3988 exhausted when many small objects point to each other in a deeply
3990 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3991 recognized as being TYPEP their class.
3992 * bug fix: the PUSHNEW documentation string has been corrected.
3993 (thanks to Vincent Arkesteijn)
3994 * bug fix: defaulting of the value for the last of an atypically
3995 large number of multiple values being bound was not being
3996 performed correctly on the Alpha or PPC platforms
3997 * optimization: implemented multiplication as a modular
3998 (UNSIGNED-BYTE 32) operation on the x86 backend.
3999 * optimization: SEARCH on simple-base-strings can now be open-coded.
4000 (see also contrib/compiler-extras.lisp for inspiration for
4001 teaching the compiler about the Boyer-Moore algorithm).
4002 * value, returned by MAX (and MIN) called with several EQUALP, but
4003 not EQL, arguments now does not depend on compiler settings.
4004 * fixed some bugs revealed by Paul Dietz' test suite:
4005 ** in stack analysis liveness information is propagated from
4006 non-local entry points.
4007 ** pathwise CAST removing failed when the CAST node did not start
4009 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4010 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4012 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4013 host is already defined.
4014 ** RENAME-FILE works on streams instead of signalling an internal
4016 ** PEEK-CHAR uses the current readtable when determining whether
4017 or not a character is whitespace.
4018 ** MERGE-PATHNAMES handles the case when the pathname does not
4019 specify a name while the default-pathname specifies a version.
4020 ** Pathnames now stand a better chance of respecting print/read
4022 ** Attempting to use standardized file system operators with a
4023 pathname with invalid :DIRECTORY components signals a
4025 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4027 ** DIRECTORY on logical pathnames is more correct.
4028 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4029 signal a TYPE-ERROR if their argument is not a stream.
4030 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4031 designator argument does not designate a stream.
4032 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4033 examining the synonym.
4034 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4036 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4037 element-type larger than ([UN]SIGNED-BYTE 32).
4039 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4040 * When built with the :SB-FUTEX feature, threaded builds now take
4041 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4042 for faster/more reliable mutex and condition variable support.
4043 * Incompatible change (but one you probably shouldn't have been using
4044 anyway): the interface and code for arbitrating between multiple
4045 threads in the same user session has been redesigned.
4046 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4047 error when called without an explicit environment argument.
4048 (thanks to Nikodemus Siivola)
4049 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4050 confused about their position. (thanks to Adam Warner and Gerd
4052 * bug fix: Pretty printing backquoted forms with unquotations in the
4053 argument list position of various code constructs such as LAMBDA
4054 now works correctly. (reported by Paul Dietz)
4055 * bug fix: Pretty printing unquotations no longer loses all
4056 stream position information.
4057 * optimization: performance of string output streams is now less
4058 poor for multiple small sequence writes.
4059 * optimization: performance of CSUBTYPEP in the presence of complex
4060 expressions involving CONS and NOT many times has been improved.
4061 (reported by Paul Dietz)
4062 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4064 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4065 streams for the REPL, for the debugger, and so on. (thanks to
4067 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4068 * fixed some bugs revealed by Paul Dietz' test suite:
4069 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4070 is ignored if it is too small, rather than propagating through
4071 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4072 ** extremely complex negations of CONS types were not being
4073 sufficiently canonicalized, leading to inconsistencies in
4075 ** VALUES tranformer lost derived type.
4077 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4078 * fixed a bootstrapping bug: the build process no longer assumes
4079 that the various BOOLE-related constants have the same value in
4080 host and target lisps. (noted by Paul Dietz' test suite on an
4081 SBCL binary built from CLISP)
4082 * The system can now be dynamically linked on the MIPS platform,
4083 which enables dynamic loading of foreign code from Lisp. (thanks
4084 to Ralf Baechle for discussions on the MIPS ABI)
4085 * The system now records debugging information for its own source
4086 files in a filesystem-position-independent manner, relative to
4087 the "SYS" logical host.
4088 * fixed a compiler bug: MV-LET convertion did not check references
4089 to the "max args" entry point. (reported by Brian Downing)
4090 * tweaked disassembly notes to be less confident about proclaiming
4091 some instruction as an LRA. (thanks to Brian Downing)
4092 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4093 now each have their own history, command character, and other
4094 characteristics. (thanks to David Lichteblau)
4095 * fixed some bugs revealed by Paul Dietz' test suite:
4096 ** compiler failure in compiling LOGAND expressions including a
4098 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4099 shift greater than 32.
4100 ** FLUSH-DEST did not mark blocks for type check regeneration.
4101 ** HANDLER-CASE failed to accept declarations in handler clauses
4102 in some circumstances.
4104 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4105 * New code in contrib/sb-introspect (still probably not entirely
4106 stable yet) provides some support for smart Lisp development
4107 environments like SLIME.
4108 * The conditions signalled for errors occurring when loading .fasl
4109 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4110 in a way which should help ASDF recover gracefully.
4111 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4112 stuff has been cleaned up. If you code contrib/ stuff, this might
4113 affect you, and you can look at contrib/README, contrib/STANDARDS,
4114 and/or the 0.8.4.27 diff to check.
4115 * In full calls the compiler now does not generate checks for declared
4116 argument types for all arguments.
4117 * various threading fixes
4118 ** and some experimental patches which didn't make it into
4119 the main tree for this release, but which are shipped in
4120 contrib/experimental-thread.patch as a possible fix for some
4121 failures (deadlock, spinning...) in GC-intensive multithreaded
4123 * fixed PPC build problem (source code incompatibility of different
4124 library versions): added offsetof() hackery which attempts to divine
4125 where glibc maintainers put uc_mcontext today
4126 * fixed bug 282: compiler does not trust type assertions while passing
4127 arguments to a full call.
4128 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4129 &OPTIONAL VALUES type parameter.
4130 * fix bug 214: algorithm for noting rejected templates is now more
4131 similar to that of template seletion. (also reported by rydis on
4133 * fixed bug 141b: printing backquoted information readably and prettily
4134 inserts a space where necessary.
4135 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4136 (CHARACTER 10) are now reported as errors, rather than propagated
4137 as unknown types. (reported by piso on #lisp)
4138 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4139 with values NIL and :ERROR. (thanks to Milan Zamazal)
4140 * fixed bug 191c: CLOS now does proper keyword argument checking as
4141 described in CLHS 7.6.5 and 7.6.5.1.
4142 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4143 longer raise an error; further, using a list as a for-as-arithmetic
4144 counter now raises a meaningful error.
4145 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4146 now understood by sequence creation functions such as MAKE-SEQUENCE
4148 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4149 a STRING-INPUT-STREAM.
4150 * compiler enhancement: SIGNUM is now better able to derive the type
4152 * type declarations inside WITH-SLOTS are checked. (reported by
4154 * fixed some bugs revealed by Paul Dietz' test suite:
4155 ** incorrect optimization of TRUNCATE for a positive first
4156 argument and negative second.
4157 ** compiler failure in let-convertion during flushing dead code.
4158 ** compiler failure while deriving type of TRUNCATE on an
4159 interval, containing 0.
4160 ** ASH of a negative bignum by a negative bignum count now returns
4162 ** intersection of CONS types now canonicalizes properly, fixing
4163 inconsistencies in SUBTYPEP.
4165 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4166 * incompatible change: The --disable-debugger command line
4167 option now clobbers the debugger at a more fundamental
4168 level, by redefining #'INVOKE-DEBUGGER instead of by
4169 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4170 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4171 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4172 enter the debugger REPL and then suffer recursive errors
4173 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4174 while under the new system, BREAK in --disable-debugger mode
4175 terminates the system just as an unhandled error would.
4176 * fixed compiler performance when processing loops with a step >1;
4177 * bug fix: DOCUMENTATION now retrieves generic function
4178 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4179 support has been systematized, and now supports the methods
4180 specified by ANSI, along with a default method and a method for
4181 slot documentation. (reported by Nathan Froyd)
4182 * bug fix: effective methods associated with a generic function are
4183 no longer cached over a change of that generic function's method
4184 combination. (reported by Andreas Fuchs)
4185 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4186 names a non-existent directory. (thanks to Andreas Fuchs)
4187 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4188 the PPC platform, lead to stack corruption; this has been fixed.
4189 (reported by Rainer Joswig)
4190 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4191 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4192 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4193 arithmetic in general, is now much more reliable on the PPC
4195 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4196 platform now returns the right answer.
4197 * optimization: restored some effective method precomputation in
4198 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4199 precomputation is now tunable.
4200 * optimization: compiler-internal data structure use has been
4201 reviewed, and changes have been made that should improve the
4202 performance of the compiler by about 20%.
4203 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4204 simple-base-strings and simple-bit-vectors is improved.
4205 * optimization: the optimization of 32-bit logical and arithmetic
4206 functions introduced in version 0.8.3 on the x86 has been
4207 implemented on the mips, ppc and sparc platforms; an
4208 implementation of the same facility, but for 64-bit arithmetic,
4209 has been added for the alpha.
4210 * microoptimization: the compiler is better able to make use of the
4211 x86 LEA instruction for multiplication by constants.
4212 * bug fix: in some situations compiler did not report usage of
4213 generic arithmetic in (SPEED 3) policy.
4214 * bug 145b fix: compiler used wrong type specifier while converting
4215 MEMBER-types to numeric.
4216 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4218 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4219 index argument now works properly on the Alpha platform.
4220 * bug fix: floating point exception treatment on the Alpha platform
4222 * bug fix: FILE-POSITION works much better on string input and
4223 output streams. (thanks to Nikodemus Siivola)
4224 * bug fix: many threading/garbage collection symptoms sorted.
4225 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4226 might be pseudo-atomic.
4227 * internal change: Stopping for GC is now done with signals not
4228 ptrace. GC is now done in whichever thread wanted it, instead of
4230 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4232 * bug fix: result form in DO is not contained in the implicit
4234 * incompatible change: ICR structure is changed; the value part of
4235 CONTINUATION is now called LVAR; corresponding functions are
4236 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4237 * added type deriver for ISQRT (thanks to Robert E. Brown).
4238 * bug fix: better support for loading from the command line when an
4239 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4241 * fixed some bugs revealed by Paul Dietz' test suite:
4242 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4243 ** ROUND and FROUND now give the right answer when given very
4244 small float arguments.
4245 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4247 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4248 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4249 ** LCM should return a non-negative integer.
4250 ** PARSE-INTEGER returned the index of a terminator instead of the
4251 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4252 ** PARSE-INTEGER returned an incorrect index being applied to a
4254 ** LCM with two arguments of 0 returns 0 rather than signalling
4256 ** unsigned addition of a 32-bit constant with the high bit set no
4257 longer causes an internal compiler error on the x86.
4258 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4259 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4260 with negative last argument.
4261 ** byte specifiers with zero size and position no longer cause
4262 an error during type derivation.
4263 ** bignum multiplication on the Alpha platform now returns the
4265 * porting: The system now builds on SuSE AMD64, although it still
4266 generates a 32-bit binary.
4267 * .fasl file incompatibility: The fasl file version number has
4268 been incremented (because of the changes to internal compiler
4269 data structures referred to above).
4271 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4272 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4273 more accurately, on the Darwin kernel running on PowerPC hardware.
4274 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4275 * Compiler code deletion notes now signal a condition of type
4276 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4277 an associated MUFFLE-WARNING restart.
4278 * The compiler now performs limited argument count validation of
4279 constant format strings in FORMAT, and where appropriate in ERROR,
4280 CERROR and WARN. (thanks to Gerd Moellmann)
4281 * New ASDF-INSTALL contrib can be used for automatic download and
4282 installation of third-party Lisp code from CCLAN or other sites
4284 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4285 which forces another thread to execute a function supplied by the
4287 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4288 now accept and act upon their :ELEMENT-TYPE keyword argument.
4289 (reported by Martin Atzmueller, Edi Weitz)
4290 * bug fix: FILE-POSITION now accepts position designators up to
4291 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4292 is the greater. (thanks to Patrik Nordebo)
4293 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4294 Kalle Olavi Niemitalo)
4295 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4296 printable. (reported by Eric Marsden)
4297 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4298 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4299 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4300 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4301 (thanks to Stig Sandoe)
4302 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4303 UNREAD-CHAR now correctly includes the unread character in the
4304 target sequence. (thanks to Gerd Moellmann)
4305 * bug fix in threaded builds: the system can now be suspended and
4306 resumed by shell job control with minimal disruption.
4307 * bug fixes in times and timezones >2038AD
4308 * better handling of "where is GNU make?" problem in build scripts
4309 (thanks to Nikodemus Siivola)
4310 * new optimization: inside a named function any reference to a
4311 function with the same name is considered to be a self-reference;
4312 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4313 optimization quality.
4314 * new optimization on x86: logical functions and + now have
4315 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4316 used when the result is truncated to 32 bits.
4317 * VALUES declaration is partially enabled.
4318 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4319 * fixed some bugs revealed by Paul Dietz' test suite:
4320 ** The system now obeys the constraint imposed by
4321 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4322 types form a lattice under type intersection.
4323 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4324 ** ASSOC now ignores NIL elements in an alist.
4325 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4326 and (1+ MOST-POSITIVE-FIXNUM) answers.
4327 ** The addition of a method with invalid qualifiers to a generic
4328 function does not cause an error to be signalled immediately;
4329 a warning is signalled, and the error is generated only on
4330 calling the generic function.
4331 * changed .fasl file version number, in part to add type codes for
4332 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4333 obscure ANSI requirements
4335 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4336 * fixed bug 148: failure to inline-expand a local function left
4337 garbage, confusing the compiler.
4338 * fixed bugs 3cd: structure slot readers perform type check if the
4339 slot can have an invalid value (i.e. it is either not initialized
4340 or can be written with a less specific slot writer).
4341 * bug fix: the compiler now traps array references to elements off
4342 the end of an array; previously, the bounds checking in some
4343 circumstances could go off-by-one.
4344 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4346 * type declarations for array element types now obey the description
4347 on the CLHS page "Declaration TYPE", as per discussions on
4348 sbcl-help around 2003-05-08. This means that a declaration
4349 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4350 declaration, all references to BAR will be asserted or assumed
4351 (with THE, so dependent on compiler policy) to involve objects of
4352 type FOO. Note that no such declaration is implied in
4353 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4354 * declared types of functions from the "Conditions"
4355 chapter. (reported by Paul Dietz)
4356 * bug fix: CERROR accepts a function as its first argument.
4357 * bug fix: NTH an NTHCDR accept a bignum as index
4358 arguments. (reported by Adam Warner)
4359 * optimization: character compare routines now optimize comparing
4360 against a constant character. (reported by Gilbert Baumann)
4361 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4362 argument now works properly on the MIPS platform.
4363 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4364 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4365 declared to have a functional type, does not cause an error
4367 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4368 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4369 * fixed bug: if last continuation of a deleted block has a
4370 destination, this destination should be deleted too. (reported by
4372 * fixed a bug in the bootstrap process: the host compiler's values
4373 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4374 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4375 test case from Patrik Nordebo)
4376 * improved the ability of the disassembler on the PPC platform to
4377 provide helpful disassembly notes.
4378 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4379 the class in more cases than previously.
4380 * bug fix: FILE-POSITION now understands :START and :END for
4381 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4382 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4383 8) data. (thanks to David Lichteblau)
4384 * bug fix: it is possible to add a method to a generic function
4385 without lambda list.
4386 * bug fix: reader failed to signal END-OF-FILE inside an
4387 object representation. (reported by Nikodemus Siivola)
4388 * fixed some bugs revealed by Paul Dietz' test suite:
4389 ** LAST and [N]BUTLAST should accept a bignum.
4390 ** condition slot accessors are methods.
4391 ** (VECTOR NIL) is a subtype of STRING.
4393 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4394 * minor incompatible change: some nonsensical specialized lambda
4395 lists (used in DEFMETHOD) which were previously ignored now signal
4397 * minor incompatible change: the system is now aware of the types of
4398 variables in the COMMON-LISP package, and will signal errors for
4399 most violations of these type constraints (where previously they
4400 were silently accepted).
4401 * minor incompatible change: COMPILE-FILE now uses the freedom
4402 afforded (ANSI 3.2.2.3) to use derived function types for
4403 functions defined in the same file. This also permits the system
4404 to warn on static type mismatches and function
4405 redefinition. (Currently it does not work with high DEBUG level.)
4406 * minor incompatible change: VALUES declaration is disabled.
4407 * When issuing notes, the compiler now signals a condition of type
4408 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4409 restart for use in user handlers. It is expected that the
4410 COMPILER-NOTE condition will eventually become a condition
4411 supertype to a hierarchy of note types, which will then be
4412 handleable in a similar fashion. However, at the moment, no such
4413 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4414 but it's an implementation detail, not a classification for the
4416 * Changes in type checking closed the following bugs:
4417 ** type checking of unused values (192b, 194d, 203);
4418 ** template selection based on unsafe type assertions (192c, 236);
4419 ** type checking in branches (194bc).
4420 * A short form of VALUES type specifier has ANSI meaning (it has
4421 increased the number of situations when SBCL cannot perform type
4423 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4424 keywords or constants is permissible.
4425 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4426 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4427 classes. (thanks to Antonio Martinez)
4428 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4429 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4430 argument to a pretty-print stream. Instead, it leaves any such
4431 operations to DESCRIBE-OBJECT methods.
4432 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4434 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4435 lambda lists. (thanks to David Lichteblau)
4436 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4437 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4438 (thanks to Gerd Moellmann)
4439 * fixed bug 246: increased compilation speed of long
4440 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4442 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4444 * DEFCONSTANT now throws a condition of type
4445 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4446 constant to a non-EQL value; CONTINUE and ABORT restarts
4447 respectively change and preserve the value.
4448 * fixed bug 63: The code walker, part of the implementation of CLOS,
4449 is now better at handling symbol macros.
4450 * bug fix: There is no longer an internal implementation type named
4451 CL:LENGTH. (reported by Raymond Toy)
4452 * bug fix: In macro-like defining macros/special operators the
4453 implicit block does not enclose the lambda list.
4454 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4455 enclosed in parentheses) are not suitable as type specifiers, and
4456 their use properly signals an error now.
4457 * bug fix: An argument count mismatch for a type specifier in code
4458 being compiled no longer causes an unhandled error at compile
4459 time, but signals a compile-time warning.
4460 * fixed simple vector readable printing
4461 * bug fix: DESCRIBE takes more care over whether the class
4462 precedence list slot of a class is bound before accessing it.
4463 (reported by Markus Krummenacker)
4464 * bug fix: FORMATTER can successfully compile pretty-printer format
4465 strings which use variants of the ~* directive inside.
4466 * bug fix: SEARCH now applies its TEST predicate to the elements of
4467 the arguments in the correct order. (thanks to Wolfhard Buss)
4468 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4469 in type inference. (thanks to Robert E. Brown)
4470 * bug fix: Reading in symbols with an explicit package name of ""
4471 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4472 * fixed some bugs revealed by Paul Dietz' test suite:
4473 ** NIL is now allowed as a structure slot name.
4474 ** Arbitrary numbers, not just REALs, are allowed in certain
4475 circumstances in LOOP for-as-arithmetic clauses.
4476 ** Multiple class redefinitions before slot access no longer
4477 causes a type error.
4478 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4479 association between the name and a class.
4480 ** Generic functions with non-standard method-combination and over
4481 five methods all of which return constants no longer return NIL
4482 after the first few invocations. (thanks to Gerd Moellmann)
4483 ** CALL-NEXT-METHOD with no arguments now passes the original
4484 values of the arguments, even in the presence of assignment.
4485 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4487 ** DISASSEMBLE works with closures and funcallable instances.
4488 ** ADD-METHOD now returns the generic function, not the new method.
4489 ** FIND-METHOD signals an error if the lengths of the specializers
4490 is incompatible with the generic function, even if the ERRORP
4492 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4493 which its argument is a member.
4494 ** DEFCLASS only redefines the class named by its class-name
4495 argument if that name is the proper name of the class;
4496 otherwise, it creates a new class.
4497 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4498 of the UNBOUND-SLOT condition to the name of the slot.
4499 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4500 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4501 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4502 SLOT-MAKUNBOUND in the specified fashion.
4504 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4505 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4506 cross-compilation host. As a consequence, we can now bootstrap our
4507 way up to SBCL starting with a bare gcc toolchain and human-readable
4508 source code (first the source to CLISP, then the source to SBCL).
4509 * A contributed module containing a partial implementation of the
4510 simple-streams interface has been included. (thanks to Rudi
4512 * A contributed module implementing the RFC1321 Message Digest
4513 Algorithm, known as MD5, has been included.
4514 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4515 no longer has any effect, as the code controlled by this feature
4516 has been deleted. (As far as we know, no-one has ever built using
4517 this feature, and its semantics were confused in any case).
4518 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4519 work on conditions (as required by the ANSI specification),
4520 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4521 expected behaviour on conditions. Users should note, however,
4522 that such behaviour is not required by the ANSI specification,
4523 and so use of this behaviour may render their code unportable.
4524 * fixed some bugs revealed by Paul Dietz' test suite:
4525 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4527 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4528 ** SXHASH on condition objects no longer returns NIL.
4529 ** :ALLOCATION :CLASS slots are better treated; their values are
4530 updated on class redefinition, and initforms inherited from
4531 superclasses are applied.
4532 ** REMOVE-METHOD returns its generic function argument even when
4533 no method was removed.
4534 ** SHARED-INITIALIZE now initializes the values of the requested
4535 slots, including those with :ALLOCATION :CLASS.
4536 ** ALLOCATE-INSTANCE now works on structure classes defined via
4537 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4539 ** SLOT-EXISTS-P now works on conditions, as well as structures
4541 ** MAKE-LOAD-FORM now has the required methods on
4542 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4543 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4544 keyword, and now implements the SLOT-NAMES argument.
4545 ** methods with &OPTIONAL arguments no longer allow too many
4546 arguments to be passed in the call without error.
4547 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4548 option is consistent with the required arguments of the generic
4549 function lambda list.
4550 * bug fix: REQUIRE accepts a string designator. (Thanks to
4552 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4553 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4554 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4555 * bug fix: The compiler now checks for duplicated variables in macro
4557 * bug fix: SETQ on globals returns the correct value.
4558 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4559 not a COMPILER-ERROR (followed by some other strange error on
4560 choosing the CONTINUE restart).
4561 * bug fix: make.sh and friends are now more consistent in the way that
4562 they look for GNU "make".
4564 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4565 * experimental native threads support (on x86 Linux >=2.4 only).
4566 This is not compiled in by default: you need to add :SB-THREAD to
4567 the target features. See the "Beyond ANSI" chapter of the manual
4569 * fix for longstanding nonANSIism: The old distinction between
4570 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4571 The return value from CL:FIND-CLASS is now a CLOS class, and
4572 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4573 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4574 * An interface to the MetaObject Protocol, as described in Kiczales,
4575 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4576 MIT Press, 1991, is available from the SB-MOP package.
4577 * incompatible change: the SB-PCL package should now be considered
4578 a private implementation detail, and no longer a semi-private MOP
4580 * minor incompatible change: due to rearrangement for threads, the
4581 control stack and binding stack are now allocated at arbitrary
4582 addresses instead of being hardcoded per-port. Users affected by
4583 this probably have to be doing advanced things with shared
4584 libraries, and will know who they are.
4585 * minor incompatible change: Previously, all --eval forms used were
4586 processed with READ before any of them were processed with EVAL.
4587 Now each --eval form is processed with both READ and EVAL before
4588 the next --eval form is processed. (Thus package operations like
4589 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4590 work as the user might reasonably expect.)
4591 * minor incompatible change: *STANDARD-INPUT* is now only an
4592 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4594 * minor incompatible change: Y-OR-N-P is now character-oriented,
4595 not line oriented. Also, YES-OR-NO-P now works without errors.
4596 (thanks to Antonio Martinez)
4597 * sb-aclrepl module improvements: an integrated inspector, added
4598 repl features, and a bug fix to :trace command.
4599 * Known functions, which cannot be open coded by the backend, are
4600 considered to be able to check types of their arguments. (fixing
4601 a bug report by Nathan J. Froyd)
4602 * fixed a bug in computing method discriminating functions: It is
4603 now possible to define methods specialized on classes which have
4604 forward-referenced superclasses. (thanks to Gerd Moellmann)
4605 * fixed evaluation order in optional entries (reported by Gilbert
4607 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4608 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4609 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4610 required-by-AMOP NAME argument, as well as CLASS and
4611 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4612 * fixed bug 20: DEFMETHOD can define methods using names that are
4613 not the proper names of classes to designate class specializers.
4614 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4615 Unix file descriptors, instead of blowing up. (thanks to Antonio
4617 * Garbage collection refactoring: user-visible change is that a
4618 call to the GC function during WITHOUT-GCING will not do garbage
4619 collection until the end of the WITHOUT-GCING. If you were doing
4620 this you were probably losing anyway.
4621 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4622 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4623 TYPEP the latter but not the former.
4624 * The compiler issues a full WARNING for calls to undefined functions
4625 with names from the CL package.
4626 * MAP-INTO for a vector destination is open coded. (reported by
4627 Brian Downing on c.l.l)
4628 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4629 documentation string.
4630 * fixed some bugs revealed by Paul Dietz' test suite:
4631 ** COPY-ALIST now signals an error if its argument is a dotted
4633 ** Condition slots are now accessed more correctly in the presence
4634 of multiple initargs for a given slot.
4635 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4636 exclude restarts of the same name associated with a different
4638 ** DEFCLASS of forward-referenced classes with another
4639 forward-referenced class in the superclasses list no longer
4641 ** Condition slots are now initialized once each, not multiple
4642 times. (thanks to Gerd Moellmann)
4643 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4645 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4646 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4647 arguments contain duplicated elements.
4648 ** RESTART-CASE understands local macros.
4649 ** RESTART-CASE associates exactly its own restarts with a condition.
4650 ** ENDP in safe mode checks its argument to be of type LIST.
4651 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4652 in question is unbound.
4653 ** Optimized MAKE-INSTANCE functions no longer cause internal
4654 assertion failures in the presence of duplicate initargs.
4655 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4656 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4657 propagated even in the ctor optimized implementation of
4659 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4661 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4662 * a better implementation of SXHASH on (simple) bit vectors,
4663 measured both in execution speed and in distribution of results
4664 over the positive fixnums, has been installed. Likewise, a better
4665 implementation of EQUAL for simple bit vectors is now available.
4666 * fixed CEILING optimization for a divisor of form 2^k.
4667 * fixed bug 240 (emitting extra style warnings "using the lexical
4668 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4669 by Antonio Martinez)
4670 * fixed SXHASH, giving different results for NIL depending on type
4671 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4672 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4673 variable. (found by Rolf Wester)
4674 * SBCL does not ignore type declarations for special
4675 variables. (reported by rif on c.l.l 2003-03-05)
4676 * some bug fixes in contrib/sb-aclrepl/
4677 * fixed some bugs revealed by Paul Dietz' test suite:
4678 ** a bug in the CONS type specifier, whereby the CAR and CDR
4679 types got intertwined, has been fixed;
4680 ** the type system is now able to reason about the interaction
4681 between INTEGER and RATIO types more completely;
4682 ** APPEND, [N]REVERSE and NRECONC check that those their
4683 arguments, which must be proper lists, are really so;
4684 ** An array specialized to be unable to hold elements has been
4685 implemented, as required -- yes, really -- by ANSI;
4686 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4687 on malformed property lists;
4689 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4690 * incompatible packaging change: in line with Unix convention,
4691 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4692 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4693 * REQUIRE and PROVIDE are now optionally capable of doing something
4694 useful. See the documentation string for REQUIRE.
4695 * infrastructure for a managed SBCL contrib system: contributed
4696 modules in this release include:
4697 ** the ASDF system definition facility;
4698 ** an interface to the BSD Sockets API;
4699 ** an ACL-like convenience interface to the repl;
4700 (thanks to Kevin Rosenberg)
4701 ** an implementation of ROTATE-BYTE, with efficient implementation
4703 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4704 gives a closer approximation to the right answer than previously.
4705 (thanks to Raymond Toy)
4706 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4707 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4708 optional environment arguments, as required by ANSI.
4709 * fixed bugs in other functions taking environment objects, allowing
4710 calls with an explicit NIL environment argument to be compiled
4712 * fixed bug 228: primary return values from
4713 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4714 COMPILE or FUNCTION.
4715 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4716 :TYPE will no longer signal errors on innocuous objects.
4717 * fixed bug 231b: SETQ is better at respecting type declarations in
4718 the lexical environment.
4719 * fixed a bug in DEFCLASS: classes named by symbols with no or
4720 unprintable packages can now be defined.
4721 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4722 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4723 * fixed compiler failure related to checking types of functions.
4724 (reported by Robert E. Brown)
4725 * the compiler is now much more consistent in its error-checking
4726 treatment of bounding index arguments to sequence functions: in
4727 (SAFETY 3) code, errors will be signalled in almost all cases if
4728 invalid sequence bounding indices are passed to functions defined
4729 by ANSI to operate on sequences.
4730 * fixed a bug in the build procedure: documentation of SBCL-specific
4731 packages is now preserved and available in the final Lisp image.
4732 * lifted FDEFINITION lookup out of loops in the implementation of
4733 many list operations. (thanks to Robert E. Brown)
4734 * fixed a bug in the reader: the #n# reader macro now works for
4735 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4736 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4737 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4738 E. Brown and Tony Martinez respectively)
4739 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4740 SLOT-BOUNDP: in particular, it is now able to optimize them much
4741 better, and is now not vulnerable to having packages renamed.
4742 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4743 always called when a slot is not present in an instance. (thanks
4745 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4746 longer signal an error on unreading a character following EOF on
4747 the previous constituent stream. (thanks to Tony Martinez)
4748 * fixed some bugs revealed by Paul Dietz' test suite:
4749 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4750 not just nonnegative fixnums;
4751 ** the logical bit-array operators such as BIT-AND now accept an
4752 explicit NIL for their "opt-arg" argument (to indicate a
4753 freshly-consed result bit-array);
4754 ** ELT now signals an error on an invalid sequence index in safe
4756 ** the type system is now cleverer about negations of numeric
4757 types, and consequently understands the BIGNUM and RATIO types
4759 ** the type system is now cleverer about the interaction between
4760 INTEGER and RATIO types: while bugs still remain, many more
4761 cases are accurately computed;
4762 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4763 if it is in the last clause;
4764 ** CONSTANTLY now correctly returns a side-effect-free function in
4766 ** DECLARE is no longer treated as a special-operator; in
4767 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4768 * incremented fasl file version number due to the change in the
4769 DEFSTRUCT-SLOT-DESCRIPTION structure.
4771 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4772 * minor incompatible change: code processed by the "interpreter" or
4773 EVAL now has a compilation optimization policy of (DEBUG 2)
4774 (changed from (DEBUG 1)) to improve debuggability of interactive
4775 development, and to allow the use of the debug RETURN command in
4777 * an experimental implementation of the RETURN command for the
4778 debugger has been included. (thanks to Frederik Kuivinen)
4779 * fixed bug 62: constraints were not propagated into a loop.
4780 * fixed bug in embedded calls of SORT (reported and investigated by
4782 * fixed some bugs revealed by Paul Dietz' test suite:
4783 ** printing and reading of arrays with some dimensions having
4784 length 0 (thanks to Gerd Moellmann);
4785 ** BOA constructor with &AUX argument without a default value does
4786 not cause a type error;
4787 ** CONSTANTP now returns true for all self-evaluating objects.
4789 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4790 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4791 accessors that are related by inheritance, as specified in the
4792 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4793 Valtteri Vuorikoski)
4794 * The compiler is now able to inline functions that were defined in
4795 a complex lexical environment (e.g. inside a MACROLET).
4796 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4798 * Support for the upcoming FreeBSD-5.0 release has been included.
4799 (thanks to Dag-Erling Smorgrav)
4800 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4801 effect when it is not in a toplevel context.
4802 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4803 stand a better chance of being correct. (thanks to Gerd
4805 * fixed bug in COERCE, which now signals an error on coercing a
4806 rational to a bounded real type which excludes the expected
4808 * The compiler is now able to derive types more accurately from the
4809 COERCE and COMPILE functions.
4810 * fixed bug 223: functional binding is considered to be constant
4811 only for symbols in the CL package.
4812 * fixed bug 231: SETQ did not check the type of a variable being set
4813 (reported by Robert E. Brown)
4814 * A new optimization for MAKE-INSTANCE has been included, fixing
4815 various bugs (including relating to :ALLOCATION :CLASS slots and
4816 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4818 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4819 ** As required by ANSI, LOOP now disallows anonymous collection
4820 clauses such as COLLECT I in conjunction with aggregate boolean
4821 clauses such as THEREIS (= I 1);
4822 ** LOOP now signals an error when any variable is reused in the
4823 same loop (including the potentially useful construct analogous
4824 to WITH A = 1 WITH A = (1+ A);
4825 ** IT is only a special loop symbol within the first clause of a
4826 conditional loop clause;
4827 ** LOOP with a typed iteration variable over a hashtable now
4828 signals a type error iff it should.
4829 * fixed some other bugs revealed by Paul Dietz' test suite:
4830 ** FILE-STREAM now names the class previously known as FD-STREAM;
4831 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4832 argument) no longer signals an error;
4833 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4834 of the slot symbol, rather than using the current package
4835 ((:CONC-NAME "") continues to intern the slot's name in the
4837 * incremented fasl file version number, because of the incompatible
4838 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4839 of the new implementation of DEFINE-COMPILER-MACRO.
4841 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4842 * Support for building SBCL for MIPS platforms running in
4843 little-endian mode has now been checked in, and basic
4844 functionality on said platforms verified.
4845 * minor incompatible change: PCL now records the pathname of a file
4846 in which methods and the like are defined, rather than its
4848 * minor incompatible change: TRUENAME now considers the truename of
4849 a file naming a directory to be the pathname with :DIRECTORY
4850 component indicating that directory.
4851 * minor incompatible change: a NAMED clause in the extended form of
4852 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4853 reason for the previous behaviour is unclear.
4854 * more systematization and improvement of CLOS and MOP conformance
4855 in PCL (thanks to Gerd Moellman and Pierre Mai):
4856 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4858 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4859 primary methods with no specializers;
4860 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4862 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4863 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4864 FORWARD-REFERENCED-CLASSes; error reporting on
4865 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4867 ** SXHASH on CLOS instances now uses a slot internal to the
4868 instance to return different numbers on distinct instances,
4869 while preserving the same return value through invocations of
4871 ** DEFMETHOD signals errors when methods with longer incongruent
4872 lambda lists are added to generic functions;
4873 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4874 CLASS, as specified in AMOP;
4875 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4876 on the order returned by the primary method for classes of
4877 class STANDARD-CLASS;
4878 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4879 * fixed some bugs shown by Paul Dietz' test suite:
4880 ** DOLIST puts its body in TAGBODY;
4881 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4883 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4884 value producing form;
4885 ** if more variables are given to PROGV than values, extra
4886 variables are bound and made to have no value;
4887 ** NSUBSTITUTE on list arguments gets the right answer with
4889 ** ELT signals an error of type TYPE-ERROR when the index argument
4890 is not a valid sequence index;
4891 ** LOOP signals (at macroexpansion time) an error of type
4892 PROGRAM-ERROR when duplicate variable names are found;
4893 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4894 ** FUNCALL of special-operators now cause an error of type
4896 ** PSETQ now works as required in the presence of side-effecting
4897 symbol-macro places;
4898 ** NCONC accepts any object as its last argument;
4899 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4901 ** loop-for-as-package does not require a package to be explicitely
4903 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4905 * fixed bug 166: compiler preserves "there is a way to go"
4906 invariant when deleting code.
4907 * fixed bug 172: macro lambda lists with required arguments after
4908 &REST arguments now cause an error to be signalled. (thanks to
4910 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4911 bug. (thanks to Matthew Danish)
4912 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4914 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4915 arguments are lexically rebound. (thanks to Gerd Moellmann and
4917 * fixed bug 194: error messages are now more informative when there
4918 is no primary method applicable in a call to a generic
4919 function. (thanks to Gerd Moellmann)
4920 * fixed bug in command line argument checking (thanks to Julian
4922 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4923 (thanks to Matthew Danish)
4924 * incremented fasl file version number, because of the
4925 SXHASH-related changes in the layout of CLOS data structures
4927 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4928 * minor incompatible change: The runtime (the Unix executable named
4929 "sbcl") is now much pickier about the .core files it will load.
4930 Essentially it now requires .core files to descend from the same
4931 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4932 as the runtime does. (The intent is to prevent the crashes which
4933 can occur, and which can even be reported as mysterious failures,
4934 when people patch the sources or change the build parameters
4935 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4936 sbcl and .core files.)
4937 * fixed bug: VALUES-LIST is no longer optimized away.
4938 * fixed bug 142: The FFI conversion of C string values to Lisp
4939 string values no longer conses excessively. (thanks to Nathan
4940 Froyd porting Raymond Toy's fix to CMU CL)
4941 * began to systematize and improve MOP conformance in PCL (thanks to
4942 Nathan Froyd, Gerd Moellman and Pierre Mai):
4943 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4945 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4946 ** FINALIZE-INHERITANCE is now called on class finalization;
4947 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4948 argument precedence order.
4949 * fixed bug 202: The compiler no longer fails on functions whose
4950 derived types contradict their declared type.
4951 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4952 so it can be non-toplevel.
4953 * The fasl file version number has changed (because of the new
4954 implementation of DEFMACRO).
4955 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4956 safe code, that any length requirement by their type-specifier
4957 argument is valid. The exceptions to this are described in bug
4959 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4960 functions now check the types of their inputs as required by ANSI.
4961 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4962 introduced symbol is DECLAREd to be SPECIAL.
4963 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4964 * fixed bug: :COUNT argument to sequence functions may be negative
4965 * fixed bug: body of DO-SYMBOLS may contain declarations
4966 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4967 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4968 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4969 symbol macro only once
4970 * fixed printing of call frame when argument list is unavailable
4971 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4972 * compiler no longer signals WARNING on unknown keyword
4975 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4976 * A beta-quality port to the mips architecture running Linux,
4977 based on the old CMUCL backend, has been made. It has been tested
4978 on a big-endian kernel, and works sufficiently well to be able to
4979 rebuild itself; it has not been tested in little-endian mode.
4980 * fixed an inconsistency between gencgc.c and purify.c which made
4981 dumping/loading .core files unreliable
4982 * fixed bug 120a: The compiler now deals correctly with IFs where
4983 the consequent is the same as the alternative, instead of
4984 misderiving the return type. (thanks to Alexey Dejneka)
4985 * fixed bug 113: Logical pathnames are now dumpable (the logical
4986 host is resolved at load-time, throwing an error if it is not
4988 * fixed bug 174: FORMAT's error message is slightly clearer when a
4989 non-printing character is used in a format directive.
4990 * fixed several bugs in compiler checking of type declarations, i.e.
4991 violations of the Python "declarations are assertions" principle
4992 (thanks to Alexey Dejneka)
4993 * fixed several bugs in PCL's error checking (thanks to Gerd
4995 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4997 * fixed bug in compilation of functions as first class values
4998 (thanks to Antonio Martinez-Shotton)
4999 * The compiler's handling TYPE-ERRORs which it can prove will
5000 inevitably happen at runtime has been cleaned up and corrected
5001 in several ways. (thanks to Alexey Dejneka)
5002 * improved argument type checking for various basic arithmetic
5003 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5004 lavished on them in the past that they can be compiled in many
5005 ways in different special cases
5006 * fixed bug 181: compiler checks validity of user supplied type
5008 * cleaned up code flushing in optimization: Function calls which
5009 should signal errors for safety purposes (e.g. which ANSI says
5010 should signal errors when their arguments are of incorrect type)
5011 are no longer optimized away.
5012 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5013 * incremented fasl file version number, because changes in the
5014 implementation of sequence functions like COERCE caused
5015 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5016 in old inline expansions) to become undefined. (Actually these
5017 changes were later undone, so we might very well be binary
5018 compatible with 0.7.7 after all, but leaving the version number
5019 incremented seemed like the simplest and most conservative
5022 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5023 * An alpha-quality port to the parisc architecture running Linux,
5024 based on the old CMUCL backend, has been made. This, even more so
5025 than the other backends, should be considered still a work in
5026 progress; known problems include that the Linux kernel in 64-bit
5027 mode does not propagate the correct sigcontext structure to
5028 userspace, and consequently SBCL on a parisc64 kernel will not
5030 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5031 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5032 suppressed.) Also now that the compiler is looking at declarations
5033 in the environment, it checks optimization declarations as well,
5034 and suppresses inlining when (> DEBUG SPEED).
5035 * More fixes have been made to treatment of floating point exception
5036 treatment and other Unix signals. In particular, floating point
5037 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5038 * The detection and handling of control stack exhaustion (infinite
5039 or very deeply nested recursion) has changed. Stack exhaustion
5040 detection is now done by write-protecting pages at the OS level
5041 and applies at all optimization settings; when found, a
5042 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5043 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5044 be caught using IGNORE-ERRORS.
5045 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5046 correctly when transforming recursive LABELS functions to LETs.
5047 (thanks to Alexey Dejneka)
5048 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5049 that are names of constants or global variables.
5050 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5051 alien routines with docstrings.
5052 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5053 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5055 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5056 (thanks to Eric Marsden)
5057 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5058 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5059 * Bug fix: The SPARC backend can now compile functions involving
5060 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5061 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5062 to a functions expecting a PATHNAME-DESIGNATOR.
5063 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5064 lambda lists. (thanks to Alexey Dejneka)
5065 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5066 functions so that EXPORTing the name of the class doesn't cause
5067 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5068 to Antonio Martinez for reporting this)
5069 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5070 constant-folded without failing an assertion. (thanks to Einar
5071 Floystad Dorum for reporting this)
5072 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5073 types are now dealt with more correctly by the compiler.
5074 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5075 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5076 behaviour analogous to RENAME-FILE. This puts its behaviour more
5077 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5079 * The fasl file version number has changed again. (because of the
5080 bug fix involving the names of PCL MAKE-INSTANCE functions)
5082 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5083 * bug fix: Floating point exceptions are treated much more
5084 consistently on the x86/Linux and PPC/Linux platforms.
5085 * Array initialization with :INITIAL-ELEMENT is now much faster for
5086 cases when the compiler cannot open code the array creation, but
5087 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5088 array accesses have also seen a speed increase.
5089 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5090 specified. (This was at the root of some bad interactions between
5091 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5093 * bug fix: Internal error arguments for undefined functions are now
5094 computed correctly on the PPC/Linux platform.
5095 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5096 Raymond Toy's patch for CMU CL)
5097 * Support for the Solaris 9 operating environment has been included
5098 (thanks to Daniel Merritt)
5099 * A very ugly but hopefully complete draft of the missing FFI chapter
5100 of the manual has been created by reformatting the corresponding
5101 CMU CL manual chapter into (currently very ugly and incoherent)
5102 DocBook and bringing it up to date for SBCL behavior. Thus, the
5103 manual is now essentially complete, at least by my extreme
5104 once-and-only-once standards, whereby it's acceptable to refer to
5105 the doc strings of SB-EXT functions as the primary documentation.
5106 * The fasl file version number has changed again, due to cleanup of
5107 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5108 is no longer a static symbol.)
5110 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5111 * SBCL now builds with OpenMCL (version 0.12) as the
5112 cross-compilation host; also, more progress has been made toward
5113 bootstrapping under CLISP.
5114 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5116 * bug 158 fixed: The compiler can now deal with integer loop
5117 increments different from 1; fixing this turned out also to fix
5119 * bug 169 fixed: no more bogus warnings about using lexical bindings
5120 despite the presence of perfectly good SPECIAL declarations (thanks
5121 to David Lichteblau)
5122 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5123 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5124 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5126 * bug 180 fixed: Method combination specifications no longer ignore
5127 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5128 * bug fix: Structure type predicate functions now check their argument
5129 count as they should.
5130 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5131 correctly. (thanks to Pierre Mai)
5132 * minor incompatible change: The --noprogrammer option is deprecated
5133 in favor of the new --disable-debugger option, which is very similar.
5134 (The major difference is that it takes effect at a slightly different
5135 time at startup, causing handling of errors in --sysinit and
5136 --userinit files will be affected differently.) The
5137 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5138 been added to allow this functionality to be controlled from ordinary
5139 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5140 maintainers, who might want to run non-interactive scripts to
5141 build SBCL cores which will later be used interactively.)
5142 * minor incompatible change: The LOAD function no longer, when given
5143 a wild pathname to load, loads all files matching that pathname.
5144 Instead, an error of type FILE-ERROR is signalled.
5146 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5147 * bug 147 fixed: The compiler preserves its block link/count
5148 invariants more correctly now so that it doesn't crash. (thanks
5150 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5152 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5153 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5154 no-value-for-this-character as NIL (as specified by ANSI).
5155 * HOST-NAMESTRING on physical pathnames now returns a string that is
5156 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5157 (thanks to Christophe Rhodes)
5158 * The Alpha port handles icache flushing more correctly. (thanks to
5160 * More progress has been made toward bootstrapping under CLISP. (thanks
5161 to Christophe Rhodes)
5162 * The fasl file format has changed again, because dynamic loading
5163 on OpenBSD (which has non-ELF object files) motivated some cleanups
5164 in the way that foreign symbols are transformed and passed around.
5165 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5166 is no longer treated as whitespace by the reader, but instead as
5167 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5168 |A
\7fB|, instead of A as it used to.
5170 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5171 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5172 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5173 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5174 this as of 0.7.1.45, but was left out of the previous news section
5175 (thanks to Dan Barlow)
5176 * SBCL now runs on the Solaris operating system on SPARC architectures
5177 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5178 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5179 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5180 * SPARC backend cleanups, allowing builds of cores optimized for V8
5181 and V9 SPARCS, and also emission of code targeted to a particular
5182 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5184 * SBCL is closer to bootstrapping under CLISP, thanks to various
5185 fixes by Christophe Rhodes.
5186 * The fasl file format has changed again, to allow the compiler's
5187 INFO database to support symbol macros.
5188 * The user manual (in doc/) is formatted into HTML more nicely.
5189 (thanks to coreythomas)
5190 * The system is smarter about SUBTYPEP relationships, especially
5191 those involving NOT types (including types such as ATOM which are
5192 represented internally using NOT types). Thus SUBTYPEP is less
5193 likely to return (VALUES NIL NIL) in general, and in particular
5194 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5196 * The fasl file format has changed again, because the internal
5197 representation of types now includes a new slot to support the new
5198 SUBTYPEP-of-NOT-types logic.
5199 * (not a change in the main branch of SBCL, but a related prototype
5200 which can hopefully be merged into the main branch of SBCL in the
5201 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5202 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5203 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5204 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5205 dispatch macro character combinations. (thanks to Alexey Dejneka)
5206 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5207 that superficially look like logical namestrings correctly.
5208 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5210 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5211 default supplied-p) for &optional and &key arguments. (thanks to
5214 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5215 * incompatible change: The compiler is now less aggressive about
5216 tail call optimization, doing it only when (> SPACE DEBUG) or
5217 (> SPEED DEBUG). (This is an incompatible change because there are
5218 programs which relied on the old CMU-CL-style behavior to optimize
5219 away their unbounded recursion which will now die of stack overflow.)
5220 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5221 for non-GENCGC systems has been increased to 20M (since that
5222 seems much closer to the likely performance optimum for modern
5223 systems than the old 4M value was)
5224 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5225 and *DEBUG-PRINT-LEVEL*
5226 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5227 of CMU CL's support for SPARC, and various endianness and other
5228 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5229 * new syntactic sugar for the Unix command line: --load foo.bar is now
5230 an alternate notation for --eval '(load "foo.bar")'.
5232 ** The system now detects stack overflow and handles it gracefully,
5233 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5234 optimization settings. (This is a good thing in general, and
5235 its introduction in this version should be particularly timely
5236 for anyone whose code fails because of suppression of tail
5238 ** The system now hunts for the C variable "environ" in a more
5239 devious way, to avoid segfaults when the C library version differs
5240 between compile time and run time. (thanks to Christophe Rhodes)
5241 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5242 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5243 ** The compiler no longer issues bogus style warnings for undefined
5244 classes in the same source file as the DEFCLASSes which defined
5245 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5247 ** fixes in CONDITION class precedence list for undefined function
5248 errors (thanks to Alexei Dejneka)
5249 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5250 correctly. (thanks to Dan Barlow)
5251 ** portability fixes aiming at bootstrapping under CLISP (thanks
5252 to Dave McDonald and Christophe Rhodes)
5253 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5254 ** fixes in type translation and and type inference (thanks to
5256 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5257 ** various fixes in the new ports (thanks to Dan Barlow)
5258 * several changes related to debugging:
5259 ** suppression of tail recursion, as noted above
5260 ** stack overflow detection, as noted above
5261 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5262 is now the default. (For some time encapsulation has been more
5263 reliable than the breakpoint-based :ENCAPSULATE NIL
5264 implementation, at least on X86 systems; and I just noticed that
5265 encapsulation also seems closer to the spirit of the ANSI
5268 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5270 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5271 up properly again. (There was a packaging bug in 0.7.0 which
5272 left their definitions in SB-SYS::LOAD-FOREIGN and
5273 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5274 vital for most things which interface to C-level interfaces,
5275 like extensions working with sockets or databases or
5276 Perl-compatible regexes or whatever, and the need to fix
5277 this bug is the main reason that 0.7.1 was released so
5279 ** DEFGENERIC is now choosier about the methods it redefines, so that
5280 reLOADing a previously-LOADed file containing DEFGENERICs does
5281 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5282 cycle now works as it should. (thanks to Alexey Dejneka)
5283 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5284 fixed by Christophe Rhodes. (He actually submitted this patch
5285 months ago, and I delayed until after 0.7.0.)
5286 ** Bug 111 (internal compiler confusion about runtime checks on
5287 FUNCTION types) was fixed by Alexey Dejneka.
5288 * Some internal cleanups (getting rid of variables which aren't
5289 needed now that the byte interpreter is gone) caused the fasl
5290 file format number to change again.
5292 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5293 * major incompatible change: The default fasl file extension, i.e. the
5294 default extension for files produced by COMPILE-FILE, has changed
5295 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5297 ** There are many changes in the implementation of the compiler.
5298 SBCL is now essentially a compiler-only implementation of ANSI
5299 Common Lisp. EVAL still "interprets" a few special cases, but
5300 almost all the interesting cases are handled by creating
5301 a LAMBDA expression, calling COMPILE on it, then calling
5302 FUNCALL on the result.
5303 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5304 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5305 Since the code is newer, there might still be some new bugs
5306 (though not as many as before Martin Atzmueller's fixes:-). But
5307 the new code is substantially simpler and clearer, and hopefully
5308 any remaining bugs will be simpler, less fundamental, and more
5309 fixable then the bugs in the old code.
5310 ** The revised compiler is still a little unsteady on its feet.
5312 *** The debugging information it produces (particularly the names
5313 of FUNCTION objects) is sometimes much less useful than what
5314 the old compiler produced.
5315 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5316 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5317 within a MACROLET) has been temporarily weakened.
5318 ** There are new compiler optimizations for various functions:
5319 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5320 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5321 *** the math functions TRUNCATE, FLOOR, and CEILING
5322 *** the function-of-all-trades COERCE
5323 Mostly these should be transparent, but there's one
5324 potentially-annoying problem (bug 117): when the compiler
5325 inline-expands a function and does type analysis on the result,
5326 it can create control paths which have type mismatches, and
5327 when it can't prove that those control paths aren't taken,
5328 it will issue WARNINGs about the type mismatches. This is
5329 a particular problem in practice for the new sequence functions.
5330 It's not clear how this should be fixed, and for now, a
5331 workaround is given in the entry for 117 in the BUGS file.
5332 ** (Because of the interaction between the two previous items --
5333 occasional inlining problems and new inline expansions -- some
5334 of the new sequence function optimizations won't really kick in
5335 completely until debugging information, and then inlining, are
5336 straightened out in some future version.)
5337 * minor incompatible changes:
5338 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5339 DIRECTORY no longer implicitly promotes NIL slots of its
5340 pathname argument to :WILD. In particular, when you ask for the
5341 contents of a directory (which you used to be able to do without
5342 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5343 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5344 ** changes in behavior that ANSI explicitly defines to be
5345 implementation dependent:
5346 *** The new compiler-only implementation still conforms with ANSI,
5347 but acts a little different than before. Besides the obvious
5348 changes in performance tradeoffs (that the cost per form passed
5349 to EVAL has gone up, and the cost per form executed by EVAL
5350 has gone down), the behavior of the system changes a little
5351 because there are no longer any interpreted function objects.
5352 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5353 e.g. doing COMPILE on the output of interactive DEFUN is
5355 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5357 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5358 has changed from (:CL) to NIL.
5359 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5360 e.g. #\Newline and #\Tab, don't have names specified in the
5361 ANSI Common Lisp standard, is now based on their ASCII symbolic
5362 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5363 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5364 are no longer used for output.
5365 ** changes in internal implementation constants:
5366 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5367 4 million. (If your application spends a lot of time GCing and
5368 you have a lot of RAM, you might want to experiment with
5369 increasing it even more.)
5370 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5371 However, almost all old code should still continue to work without
5372 immediate update, as SB-C-CALL is now a (deprecated) nickname
5374 ** Old operator names in the style DEF-FOO are now deprecated in
5375 favor of new corresponding names DEFINE-FOO, for consistency with
5376 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5377 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5378 internal symbols, but a few supported extensions like
5379 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5380 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5381 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5382 etc. as you get deeper into recursive calls to the debugger
5383 command loop, instead of the old "5]", "5]]", "5]]]"
5384 sequence. (I was motivated to do this when squabbles between
5385 ILISP and SBCL left me very deeply nested in the debugger. In the
5386 short term, this change will probably provoke more ILISP/SBCL
5387 squabbles, but hopefully it will be an improvement in the long run.)
5388 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5389 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5390 function, since declaiming return types involving aliens is
5391 (1) annoyingly messy to do by hand and (2) vital to efficient
5392 compilation of code which calls such functions.
5393 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5394 longer reexported by the SB-EXT package. They're solely useful
5395 for alien code, so it seems more logical that you should get
5396 them from the SB-ALIEN package, not in SB-EXT.
5397 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5398 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5399 features. Instead, the code that they used to control is always
5400 built into the system.
5401 * many other bug fixes
5402 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5403 advantage of the new EVAL-WHEN stuff and to clean them up in
5404 general, and they are now more ANSI-compliant in a number of
5405 ways. Martin Atzmueller is responsible for a lot of this.
5406 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5408 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5409 *** correct ERROR type for various file operations
5410 *** some fixes for Lisp streams
5411 *** DEFMETHOD syntax checking
5412 *** changing old weird representation of debug information as
5413 strings (which, among their other deficiencies, don't transform
5414 correctly when you rename packages, and don't change their
5415 print representation when you change things like *PACKAGE*
5416 and *PRINT-LENGTH*) to symbols and lists of symbols
5417 He also made several improvements and fixed several bugs in DESCRIBE.
5418 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5420 *** misbehavior of WRITE-STRING/WRITE-LINE
5421 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5422 and several other LOOP problems as well
5423 *** DIRECTORY when similar filenames are present
5424 *** DEFGENERIC with :METHOD options
5425 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5426 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5427 *** argument ordering in FIND with :TEST option
5428 *** mishandled package designator argument in APROPOS-LIST
5429 *** various problems in the backquote readmacro
5430 *** a bug in APROPOS
5431 *** probably some others that I'm not describing very well here,
5432 since the CVS log documents them by reference to sbcl-devel
5433 messages, and the SourceForge archives aren't working well.:-(
5434 ** Dan Barlow improved the Alpha port (and is making progress on the
5435 PPC port, for those of you who think different).
5436 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5437 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5438 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5439 continues to work on the SPARC port (for those of you in a position
5440 to look down upon our little PC-compatible boxes from a great height).
5441 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5442 and uses that copy, rather than the current dynamic value, when
5443 it's trying to decide whether to truncate output. Thus e.g.
5444 (let ((*print-lines* 50))
5445 (pprint-logical-block (stream nil)
5447 (let ((*print-lines* 8))
5448 (print (aref possiblybigthings i) stream)))))
5449 should now truncate the logical block only at 50 lines, instead of
5450 often truncating it at 8 lines, as it did before.
5451 * The doc/cmucl/ directory, containing old CMU CL documentation
5452 from the time of the fork, is no longer part of the base system.
5453 SourceForge has shut down its anonymous FTP service, and with it
5454 my original plan for distributing the old CMU CL documentation
5455 there. For now, if you need these files you can download an old
5456 SBCL source release and extract them from it.
5457 * The fasl file version number changed again, for dozens of reasons,
5458 some of which are apparent above.
5460 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5461 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5462 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5463 patch, so that DISASSEMBLE output is much nicer.
5464 * The code in the SB-PROFILE package now seems reasonably stable.
5465 I still haven't decided what the final interface should look like
5466 (I'd like PROFILE to interact cleanly with TRACE, since both
5467 facilities use function encapsulation) but if you have a need
5468 for profiling now, you can probably use it successfully with
5469 the current CMU-CL-style interface.
5470 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5471 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5472 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5473 link now returns the dangling link itself, and for similar
5474 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5475 link itself. (In these cases the old code signalled an error and
5476 looped endlessly, respectively.) Thus, DIRECTORY now works even
5477 in the presence of dangling and cyclic symbolic links.
5478 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5479 is now a supported extension again, since the consensus on
5480 sbcl-devel was that it can be useful for ordinary development
5481 work, not just for debugging SBCL itself.
5482 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5483 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5484 that currently-defined functions might be redefined later with
5485 different return types.
5486 * Hash tables can be printed readably, as inspired by CMU CL code
5487 of Eric Marsden and SBCL code of Martin Atzmueller.
5488 * better error handling in CLOS method combination, thanks to
5489 Martin Atzmueller porting Pierre Mai's CMU CL patches
5490 * more overflow fixes for >16Mbyte I/O buffers
5491 * A bug in READ has been fixed, so that now a single Ctrl-D
5492 character suffices to cause end-of-file on character streams.
5493 In particular, now you only need one Ctrl-D at the command
5494 line (not two) to exit SBCL.
5495 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5497 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5498 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5499 does the right thing.
5500 * The implementation of some type tests, especially for CONDITION
5501 types, is now tidier and maybe faster, due to CMU CL code
5502 originally by Douglas Crosher, ported by Martin Atzmueller.
5503 * Some math functions have been fixed, and there are new
5504 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5505 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5506 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5507 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5508 likely to be built into sbcl-0.7.0.)
5509 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5510 CL, ported to SBCL by Martin Atzmueller)
5511 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5512 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5513 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5514 * There's a new slam.sh hack to shorten the edit/compile/debug
5515 cycle for low-level changes to SBCL itself, and a new
5516 :SB-AFTER-XC-CORE target feature to control the generation of
5517 the after-xc.core file needed by slam.sh.
5518 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5519 COMPILE-FILE is no longer supported, so that now every function
5520 gets an entry point, so that block compilation looks a little
5521 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5522 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5523 returns the number of bytes consed since the system started,
5524 rather than the number consed since the first time the function
5525 was called. (The new definition parallels ANSI functions like
5526 CL:GET-INTERNAL-RUN-TIME.)
5527 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5528 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5529 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5530 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5531 * Fasl file version numbers are now independent of the target CPU,
5532 since historically most system changes which required version
5533 number changes have affected all CPUs equally. Similarly,
5534 the byte fasl file version is now equal to the ordinary
5537 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5538 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5539 is no longer recognized. I apologize for this, because it was
5540 listed in SB-EXT as a supported extension, but I found that
5541 its existing behavior was poorly specified, as well as incorrectly
5542 specified, and it looked like too much of a mess to straighten it
5543 out. I have enough on my hands trying to get ANSI stuff to work..
5544 * many patches ported from CMU CL by Martin Atzmueller, with
5545 half a dozen bug fixes in pretty-printing and the debugger, and
5546 half a dozen others elsewhere
5547 * fixed bug 13: Floating point infinities are now supported again.
5548 They might still be a little bit flaky, but thanks to bug reports
5549 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5550 as flaky as they were.
5551 * The --noprogrammer command line option is now supported. (Its
5552 behavior is slightly different in detail from what the old man
5553 page claimed it would do, but it's still appropriate under the
5554 same circumstances that the man page talks about.)
5555 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5556 are now supported, and enabled by default. Thus, the compiler can
5557 handle many floating point and complex operations much less
5558 inefficiently. (Thus e.g. you can implement a complex FFT
5560 * The compiler now detects type mismatches between DECLAIM FTYPE
5561 and DEFUN better, and implements CHECK-TYPE more correctly, and
5562 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5563 thanks to patches from Martin Atzmueller.
5564 * various fixes to make the cross-compiler more portable to
5565 ANSI-conforming-but-different cross-compilation hosts (notably
5566 Lispworks for Windows, following bug reports from Arthur Lemmens)
5567 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5568 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5569 fixed thanks to Pierre Mai's CMU CL patches.
5570 * fixes to keep the system from overflowing internal counters when
5571 it tries to use i/o buffers larger than 16M bytes
5572 * fixed bug 45a: Various internal functions required to support
5573 complex special functions have been merged from CMU CL sources.
5574 (When I was first setting up SBCL, I misunderstood a compile-time
5575 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5576 * improved support for type intersection and union, fixing bug 12
5577 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5578 more obscure bugs as well
5579 * some steps toward byte-compiling non-performance-critical
5580 parts of the system, courtesy of patches from Martin Atzmueller
5581 * Christophe Rhodes has made some debian packages of sbcl at
5582 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5583 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5584 stable, but are nonetheless usable. When he's ready, I'd be happy
5585 to add them to the SourceForge "File Releases" section. (And if
5586 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5587 * new fasl file format version number (because of changes in
5588 internal representation of (OR ..) types to accommodate the new
5589 support for (AND ..) types, among other things)
5591 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5592 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5594 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5596 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5597 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5598 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5599 * DESCRIBE now works on structure objects again.
5600 * Most function call argument type mismatches are now handled as
5601 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5602 know whether the function will be redefined before the call is
5603 executed. (The compiler could flag local calls with full WARNINGs,
5604 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5605 it doesn't keep track of enough information to know whether calls
5606 are local in this sense.)
5607 * Compiler output is now more verbose, with messages truncated
5608 later than before. (There should be some supported way for users
5609 to override the default verbosity, but I haven't decided how to
5610 provide it yet, so this behavior is still controlled by the internal
5611 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5612 src/compiler/ir1util.lisp.)
5613 * Fasl file format version numbers have increased again, because
5614 support for the Gray streams extension changes the layout of the
5615 system's STREAM objects.
5616 * The Gray subclassable streams extension now works, thanks to a
5617 patch from Martin Atzmueller.
5618 * The full LOAD-FOREIGN extension (not just the primitive
5619 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5620 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5621 but like most other programs, it defaults to copying the Unix
5622 environment from the original process instead of starting the
5623 new process in an empty environment.
5624 * Extensions which manipulate the Unix environment now support
5625 an :ENVIRONMENT keyword option which doesn't smash case or
5626 do other bad things. The CMU-CL-style :ENV option is retained
5627 for porting convenience.
5628 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5629 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5631 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5633 * A patch from Martin Atzmueller seems to have solved the SIGINT
5634 problem, and as far as we know, signal-handling now works cleanly.
5635 (If you find any new bugs, please report them!)
5636 * The system no longer defaults Lisp source file names to types
5637 ".l", ".cl", or ".lsp", but only to ".lisp".
5638 * The compiler no longer uses special default file extensions for
5639 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5640 seems to expect a single default extension for all compiled code,
5641 and there's no compelling reason to try to stretch the standard
5642 to allow two different extensions.) Instead, byte-compiled files
5643 default to the same extension as native-compiled files.
5644 * Fasl file format version numbers have increased again, because
5645 a rearrangement of internal implementation packages made some
5646 dumped symbols in old fasl files unreadable in new cores.
5647 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5648 many fewer weird special cases.
5649 * Bug #17 (differing COMPILE-FILE behavior between logical and
5650 physical pathnames) has been fixed, and some related misbehavior too,
5651 thanks to a patch from Martin Atzmueller.
5652 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5653 by Tim Moore, ported to SBCL by Martin Atzmueller.
5654 * Martin Atzmueller fixed several filesystem-related problems,
5655 including bug #36, in part by porting CMU CL patches, which were
5656 written in part by Paul Werkowski.
5657 * More compiler warnings in src/runtime/ are gone, thanks to
5658 more patches from Martin Atzmueller.
5659 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5662 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5664 * DESCRIBE now works on CONDITION objects.
5665 * The debugger now handles errors which arise when trying to print
5666 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5668 * The build system now uses an additional file, customize-target-features.lisp,
5669 to allow local modifications to the target *FEATURES* list. (The point of
5670 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5671 debugging features enabled, without having to worry about propagating it
5672 into everyone's system when I do a "cvs update".) When no
5673 customize-target-features.lisp file exists, the target *FEATURES* list
5674 should be constructed the same way as before.
5675 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5676 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5677 warn about behavior which is undefined under the ANSI spec. Note: This
5678 is specified by ANSI, but it's not very popular with programmers.
5679 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5680 macro in the SBCL sources for an example of a workaround which you
5681 might use to make portable ANSI-standard code which does what you want.
5682 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5683 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5684 when it's used as a non-toplevel form. (This is required in order
5685 to implement the DEFCONSTANT-EQX macro.)
5686 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5687 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5688 funny things, due to bugs in the implementation of EVAL-WHEN
5689 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5690 non-toplevel DEFCONSTANTs are uncommon.)
5691 * The core file version number and fasl file version number have been
5692 incremented, because the old noncompliant DEFCONSTANT behavior involved
5693 calling functions which no longer exist, and because I also took the
5694 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5695 * fixed bug 1 (error handling before read-eval-print loop starts), and
5696 redid debugger restarts and related debugger commands somewhat while
5698 ** The QUIT debugger command is gone, since it did something
5699 rather different than the SB-EXT:QUIT command, and since it never
5700 worked properly outside the main toplevel read/eval/print loop.
5701 Invoking the new TOPLEVEL restart provides the same functionality.
5702 ** The GO debugger command is also gone, since you can just invoke
5703 the CONTINUE restart directly instead.
5704 ** The TOP debugger command is also gone, since it's redundant with the
5705 FRAME 0 command, and since it interfered with abbreviations for the
5707 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5709 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5710 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5711 some porting work by Martin Atzmueller)
5712 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5713 with a boatload of patches which he ported to SBCL. Now that those
5715 ** The system tries to make sure that its low-priority messages
5716 are prefixed by semicolons, to help people who like to use
5717 syntax highlighting in their ILISP buffer. (This patch
5718 was originally due to Raymond Toy.)
5719 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5720 patches originally written by Raymond Toy.
5721 ** The compiler understands coercion between single-value and
5722 multiple-VALUES type expressions better, getting rid of some very
5723 weird behavior, thanks to patches originally by Robert MacLachlan
5724 and Douglas Crosher.
5725 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5726 lambda lists, thanks to a patch originally by Pierre Mai.
5727 ** The system no longer bogusly warns about "abbreviated type
5729 ** The compiler gets less confused by inlining and RETURN-FROM,
5730 thanks to some patches originally by Tim Moore.
5731 ** The system no longer hangs when dumping circular lists to fasl
5732 files, thanks to a patch originally from Douglas Crosher.
5733 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5734 undefined function error.
5735 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5736 in structure slot initforms) for now, documented workaround instead:-|
5737 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5738 * fixed bug 5: added stubs for various Gray stream functions called
5739 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5740 installed, at least appropriate type errors are generated
5741 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5742 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5743 consistently in DEFMETHOD forms.
5744 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5745 it doesn't seem to affect SBCL after all
5746 * The C runtime system now builds with better optimization and many
5747 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5749 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5751 * The system is now under CVS at SourceForge (instead of the
5752 CVS repository on my home machine).
5753 * The new signal handling code has been tweaked to treat register
5754 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5755 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5756 downstream, e.g. in debug-int.lisp, has implicit dependencies
5757 on the unsignedness of integer representation of machine words,
5758 and that caused the system to bomb out with infinite regress
5759 when trying to recover from type errors involving signed values,
5760 e.g. (BUTLAST '(1 2 3) -1).)
5761 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5762 (This was one of the bugs Peter Van Eynde reported back in July.)
5763 * The system now uses code inspired by Colin Walters' O(N)
5764 implementation of MAP (from the cmucl-imp@cons.org mailing
5765 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5766 inline the MAP operation, and there is more than one
5767 sequence argument to the MAP call (so that it can't just
5768 do ETYPECASE once and for all based on the type of the
5769 single sequence argument). (The old non-inline implementation
5770 of the general M-argument sequence-of-length-N case required
5771 O(M*N*N) time when any of the sequence arguments were LISTs.)
5772 * The QUIT :UNIX-CODE keyword argument has been renamed to
5773 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5774 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5776 * Raymond Wiker's patches to port dynamic loading from Linux to
5777 FreeBSD have been added.
5778 * The BUGS file is now more nearly up to date, thanks in large part
5779 to Martin Atzmueller's review of it.
5780 * The debugger now flushes standard output streams before it begins
5781 its output ("debugger invoked" and so forth).
5782 * The core version number and fasl file version number have both
5783 been incremented, because of incompatible changes in the layout
5785 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5786 used to not be called for a saved Lisp image.)
5787 * Martin Atzmueller's version of a patch to fix a compiler crash,
5788 as posted on sbcl-devel 13 September 2000, has been installed.
5789 * Instead of installing Martin Atzmueller's patch for the
5790 compiler transform for SUBSEQ, I deleted the compiler transform,
5791 and transforms for some similar consing operations.
5792 * A bug in signal handling which kept TRACE from working on OpenBSD
5794 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5795 away by constant folding
5796 * The system now defines its address space constants in one place
5797 (in the Lisp sources), and propagates them automatically elsewhere
5798 (through GENESIS and the sbcl.h file). Therefore, patching the
5799 address map is less unnecessarily tedious and error-prone. The
5800 Lisp names of address space constants have also been systematized.
5801 * CVS tags like dollar-Header-dollar have been removed from
5802 the sources, because they have never saved me trouble and
5803 they've been source of trouble working with patches and other
5804 diff-related operations.
5805 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5806 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5808 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5810 * The system has been ported to OpenBSD.
5811 * The system now compiles with a simple "sh make.sh" on the systems
5812 that it's supported on. I.e., now you no longer need to tweak
5813 text in the target-features.lisp-expr and symlinks in src/runtime/
5814 by hand, the make.sh takes care of it for you.
5815 * The system is no longer so grossly inefficient when compiling code
5816 involving vectors implemented as general (not simple) vectors (VECTOR T),
5817 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5818 which dares to use the various sequence functions on non-simple
5819 vectors, takes less of a performance hit.
5820 * There is now a primitive type predicate VECTOR-T-P
5821 to test for the (VECTOR T) type, so that e.g.
5822 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5823 can now be compiled with some semblance of efficiency. (The old code
5824 turned the type declaration into a full call to %TYPEP at runtime!)
5825 * AREF on (VECTOR T) is still not fast, since it's still compiled
5826 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5827 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5828 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5829 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5830 without making full calls to SUBTYPEP at runtime.
5831 (Some analogous efficiency issues for non-simple vectors specialized to
5832 element types other than T, or for non-simple multidimensional arrays,
5833 have not been addressed. They could almost certainly be handled the
5834 same way if anyone is motivated to do so.)
5835 * The changes in array handling break binary compatibility, so
5836 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5837 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5838 instead of (VALUES T T).
5839 * By following the instructions that Dan Barlow posted to sbcl-devel
5840 on 2 July 2000, I was able to enable primitive dynamic object
5841 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5842 functionality is not implemented (since it calls ld to resolve
5843 library references automatically, requiring RUN-PROGRAM for its
5844 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5845 try to resolve library references) is now supported.
5846 * The system now flushes the standard output streams when it terminates,
5847 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5848 them at several other probably-convenient times, e.g. in each pass of
5849 the toplevel read-eval-print loop, and after evaluating a form given
5850 as an "--eval" command-line option. (These changes were motivated by a
5851 discussion of stream flushing issues on cmucl-imp in August 2000.)
5852 * The source transform for TYPEP of array types no longer assumes
5853 that an array whose element type is a not-yet-defined type
5854 is implemented as an array of T, but instead punts, so that the
5855 type will be interpreted at runtime.
5856 * There is now some support for cross-compiling in make.sh: each of
5857 the phases of make.sh has its own script. (This should be transparent
5858 to people doing ordinary, non-cross-compile builds.)
5859 * Since my laptop doesn't have hundreds of megabytes of memory like
5860 my desktop machine, I became more motivated to do some items on
5861 my to-do list in order to reduce the size of the system a little:
5862 ** Arrange for various needed-only-at-cold-init things to be
5863 uninterned after cold init. To support this, those things have
5864 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5865 symbols with such names are now uninterned after cold init).
5866 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5867 fasl files for cold load.
5868 ** Remove the old compiler structure pooling code (which used to
5869 be conditional on the target feature :SB-ALLOC) completely.
5870 ** Redo the representation of some data in cold init to be more compact.
5871 (I also looked into supporting byte compiled code at bootstrap time,
5872 which would probably reduce the size of the system a lot, but that
5873 looked too complicated, so I punted for now.)
5874 * The maximum signal nesting depth in the src/runtime/ support code has
5875 been reduced from 4096 to 256. (I don't know any reason for the very
5876 large old value. If the new smaller value turns out to break something,
5877 I'll probably just bump it back up.)
5878 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5880 * Many, many bugs reported by Peter Van Eynde have been added to
5881 the BUGS list; some have even been fixed.
5882 * While enabling dynamic object file loading, I tried to make the
5883 code easier to understand, renaming various functions and variables
5884 with less ambiguous names, and changing some function calling
5885 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5886 * While trying to figure out how to do the OpenBSD port, I tried to
5887 clean up some of the code in src/runtime/. In particular, I dropped
5888 support for non-POSIX signal handling, added various comments,
5889 tweaked the code to reduce the number of compilation warnings, and
5890 renamed some files to increase consistency.
5891 * To support the new automatic configuration functionality in make.sh,
5892 the source file target-features.lisp-expr has been replaced with the
5893 source file base-target-features.lisp-expr and the machine-generated
5894 file local-target-features.lisp-expr.
5895 * fixed a stupid quoting error in make.sh so that using CMU CL
5896 "lisp -batch" as cross-compilation host works again
5898 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5900 * DESCRIBE no longer tries to call itself recursively to describe
5901 bound/fbound values, so that it no longer fails on symbols which are
5902 bound to themselves (like keywords, T, and NIL).
5903 * DESCRIBE now works on generic functions.
5904 * The printer now prints less-screwed-up representations of closures
5905 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5906 * A private symbol is used instead of the :EMPTY keyword previously
5907 used to mark empty slots in hash tables. Thus
5908 (DEFVAR *HT* (MAKE-HASH-TABLE))
5909 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5910 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5911 now does what ANSI says that it should. (You can still get
5912 similar noncompliant behavior if bang on the hash table
5913 implementation with all the symbols you get back from
5914 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5915 This breaks binary compatibility, since tests for equality to
5916 :EMPTY are wired into things like the macroexpansion of
5917 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5919 * There's now a minimal placeholder implementation for CL:STEP,
5920 as required by ANSI.
5921 * An obscure bug in the interaction of the normal compiler, the byte
5922 compiler, inlining, and structure predicates has been patched
5923 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5924 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5926 * Missing ordinary arguments in a macro call are now detected even
5927 when the macro lambda list contains &KEY or &REST.
5928 * The debugger no longer complains about encountering the top of the
5929 stack when you type "FRAME 0" to explicitly instruct it to go to
5930 the top of the stack. And it now prints the frame you request even
5931 if it's the current frame (instead of saying "You are here.").
5932 * As specified by ANSI, the system now always prints keywords
5933 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5935 * The default initial SIZE of HASH-TABLEs is now smaller.
5936 * Type information from CLOS class dispatch is now propagated
5937 into DEFMETHOD bodies, so that e.g.
5938 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5940 is now basically equivalent to
5941 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5942 (DECLARE (TYPE SINGLE-FLOAT X))
5944 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5945 operation, without having to do run-time type dispatch.
5946 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5947 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5948 * Since I don't seem to be making big file reorganizations very often
5949 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5950 is overflowing my ability to conveniently back them up), I've finally
5951 checked the system into CVS. (The CVS repository is on my home system,
5952 not at SourceForge -- putting it on SourceForge might come later.)
5953 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5954 high-level GC-NOTIFY-FOO functions send their output. (There's
5955 still very little control of where low-level verbose GC functions
5956 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5957 less than it used to -- the GC-NOTIFY-FOO functions are now under
5958 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5959 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5960 in only one place in the source code, and propagates it automatically
5961 everywhere that it's needed. Thus e.g. when I bump the version from
5962 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5963 * The C source files now include boilerplate legalese and documentation
5964 at the head of each file (just as the Lisp source files already did).
5965 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5966 to his page will be replaced with a link to his new CLiki service.
5968 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5970 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5971 * The build process now looks for GNU make under the default name "gmake",
5972 instead of "make" as it used to. If GNU make is not available as "gmake"
5973 on your system, you can change this default behavior by setting the
5974 GNUMAKE environment variable.
5975 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5976 can build without error under CMU CL.
5978 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5980 * There is now a partial SBCL user manual (with some new text and some
5981 text cribbed from the CMU CL manual).
5982 * The beginnings of a profiler have been added (starting with the
5983 CMU CL profiler and simplifying and cleaning up). Eventually the
5984 main interface should be through the TRACE macro, but for now,
5985 it's still accessed through vaguely CMU-CL-style functions and macros
5986 exported from the package SB-PROFILE.
5987 * Some problems left over from porting CMU CL to the new
5988 cross-compilation bootstrap process have been cleaned up:
5989 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5990 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5991 part when getting rid of the compiler *BACKEND* stuff.)
5992 ** The value of *NULL-TYPE* was screwed up, because it was
5993 being initialized before the type system knew the final
5994 definition of the 'NULL type. This screwed up several key
5995 optimizations in the compiler, causing inefficiency in all sorts
5996 of places. (I found it because I wanted to understand why
5997 GET-INTERNAL-RUN-TIME was consing.)
5998 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5999 PROCLAIM FTYPE information. Unfortunately this broke binary
6000 compatibility again, since now the forms output by DEFGENERIC
6001 to refer to functions which didn't exist in 0.6.3.
6002 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6003 can use the new (as of 0.6.3) transform for SOME into MAP into
6005 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6006 values to (INTEGER 0 1000000), so that the time code will no longer
6007 occasionally get blown up by Linux returning 1000000 microseconds
6008 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6009 its output conform to the ANSI spec. (Alas, this makes its output
6010 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6011 * A full call to MAP NIL with a single sequence argument no longer conses.
6012 * fixes to problems pointed out by Martin Atzmueller:
6013 * The manual page no longer talks about multiprocessing as though
6014 it were currently supported.
6015 * The ILISP support patches have been removed from the distribution,
6016 because as of version 5.10.1, ILISP now supports SBCL without us
6017 having to maintain patches.
6018 * added a modified version of Raymond Toy's recent CMU CL patch for
6019 EQUALP comparison of HASH-TABLE
6021 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6023 * The system still can't cross-compile itself with
6024 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6025 entails), but at least it can compile more of itself that way
6026 than it used to be able to, and various buglets which were uncovered
6027 by trying to cross-compile itself that way have now been fixed.
6028 * This release breaks binary compatibility again. This time
6029 at least I've incremented the FASL file format version to 2, so that the
6030 problem can be detected reliably instead of just causing weird errors.
6031 * various new style warnings:
6032 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6033 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6034 ** using the lexical binding of a variable named in the *FOO* style
6035 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6036 as specified by ANSI.
6037 * *RANDOM-STATE* is no longer automatically initialized from
6038 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6039 default behavior of the system is to repeat its behavior every time
6040 it's run. If you'd like to change this behavior, you can always
6041 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6042 old convention there was no comparably easy way to get the system to
6043 repeat its behavior every time it was run.
6044 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6045 FTYPE declarations has been removed, in favor of their ANSI
6046 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6047 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6048 the types of their sequence arguments can be determined at compile time.
6049 This is done through a new open code expansion for MAP which eliminates
6050 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6051 argument types can be determined at compile time.
6052 * The optimizer now transforms COERCE into an identity operation when it
6053 can prove that the coerced object is already of the correct type. (This
6054 can be a win for machine generated code, including the output of other
6055 optimization transforms, such as the MAP transform above.)
6056 * Credit information has been moved from source file headers into CREDITS.
6057 * Source file headers have been made more standard.
6058 * The CASE macro now compiles without complaining even when it has
6061 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6063 * (Note that the way that the PCL macroexpansions were rewritten
6064 to accommodate the change in DEFGENERIC below breaks binary
6065 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6066 not run under sbcl-0.6.2. Once we get out of alpha releases,
6067 i.e. hit release 1.0.0, we'll probably try to maintain binary
6068 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6069 and sbcl-1.4.4. Until then, however, it might be fairly common
6070 for maintenance releases to break binary compatibility.)
6071 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6073 * The reporting of unhandled signals has been changed to print some
6074 explanatory text as well as the report form. (Previously only
6075 the report form was printed.)
6076 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6077 it defines, so that the compiler no longer issues undefined function
6078 warnings for compiled-but-not-yet-loaded generic functions.
6079 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6080 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6081 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6082 section of the ANSI spec are supported.
6083 * The "" nickname for the "KEYWORD" package has been removed.
6084 The reader still handles symbol tokens which begin with a package marker
6085 as keywords, but it doesn't expose its mechanism for doing so in the
6086 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6087 * The system now issues STYLE-WARNINGs for contradictory TYPE
6088 proclamations. (Warnings for contradictory FTYPE proclamations would
6089 be nice too, but those can't be done usefully unless the type system
6090 is made smarter about FUNCTION types.)
6091 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6092 systematized, so that "*target-*.lisp is supposed to exist only on the
6093 target and imply that there's a related file which exists on the
6094 host, and *host-*.lisp is supposed to exist only on the host and imply
6095 that there's a related file which exists on the target. This involves a
6096 lot of renaming. Hopefully the acute confusion caused by the renaming
6097 will be justified by the reduction in chronic confusion..
6098 ** runtime-type.lisp -> early-target-type.lisp
6099 ** target-type.lisp -> late-target-type.lisp
6100 ** early-host-format.lisp -> early-format.lisp
6101 ** late-host-format.lisp -> late-format.lisp
6102 ** host-error.lisp -> misc-error.lisp
6103 ** early-error.lisp -> early-target-error.lisp
6104 ** late-error.lisp -> late-target-error.lisp
6105 ** host-defboot.lisp -> early-defboot.lisp
6106 ** code/misc.lisp -> code/target-misc.lisp
6107 ** code/host-misc.lisp -> code/misc.lisp
6108 ** code/numbers.lisp -> code/target-numbers.lisp
6109 ** code/early-numbers.lisp -> numbers.lisp
6110 ** early-host-type.lisp -> early-type.lisp
6111 ** late-host-type.lisp -> late-type.lisp
6112 ** host-typep.lisp -> typep.lisp
6113 ** load.lisp -> target-load.lisp
6114 ** host-load.lisp -> load.lisp
6115 ** host-disassem.lisp -> disassem.lisp
6116 ** host-insts.lisp -> insts.lisp
6117 ** byte-comp.lisp -> target-byte-comp.lisp
6118 ** host-byte-comp.lisp -> byte-comp.lisp
6119 ** host-signal.lisp -> signal.lisp
6120 ** host-defstruct.lisp -> defstruct.lisp
6121 ** late-target-type.lisp -> deftypes-for-target.lisp
6122 Furthermore, several other previously target-only files foo.lisp (e.g.
6123 hash-table.lisp and random.lisp) have been split into a target-and-host
6124 foo.lisp file and a target-only target-foo.lisp file, with their key type
6125 definitions in the target-and-host part, so that the cross-compiler will
6126 know more about target types.
6127 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6128 gone away. In their place are various *BACKEND-FOO* variables
6129 corresponding to the slots of the old structure.
6130 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6131 into the target SBCL has been fixed.
6132 * The chill.lisp system for loading cold code into a running SBCL
6134 * Support for the CMU CL "scavenger hook" extension has been removed.
6135 (It was undocumented and unused in the CMU CL sources that SBCL was
6136 derived from, and stale in sbcl-0.6.1.)
6137 * Various errors in the cross-compiler type system were detected
6138 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6139 (enabling various consistency checks). Many of them were fixed,
6140 but some hard problems remain, so the compiler is back to
6141 running without *TYPE-SYSTEM-INITIALIZED* for now.
6142 * As part of the cross-compiler type system cleanup, I implemented
6143 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6144 * I have started adding UNCROSS calls throughout the type system
6145 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6146 on cross-compiler input files will be able to go away, and various
6148 * CONSTANTP now returns true for quoted forms (as explicitly required
6151 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6153 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6154 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6155 (MAKE-LIST -1). In the longer term, it ought to become true
6156 that declarations are assertions even at SAFETY 1. For now, it's not
6157 quite true even at SAFETY 3, but it's at least more nearly true..
6158 (Note that this change seems to increases the size of the system by
6159 O(5%) and to decrease the speed of the compiler by 20% or more.)
6160 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6161 for the problem of printing dozens of lines of distracting information
6162 about low-level system machinery as part of the top stack frame
6163 on entry to the debugger when an undefined function was called.
6164 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6165 is not reset to COMMON-LISP-USER.
6166 * Compilation of stuff related to dyncount.lisp has been made conditional
6167 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6168 smaller. The various dyncount-related symbols have been moved into
6169 a new "SB-DYNCOUNT" package.
6170 * tty-inspect.lisp has been renamed to inspect.lisp.
6171 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6172 feature has gone away. (When we eventually port to other flavors of
6173 libc and/or Unix, we'll try to make the differences between flavors
6174 invisible at the user level.)
6175 * Various other *FEATURES* tags, and/or their associated conditionals,
6176 have been removed if obsolescent, or given better documentation, or
6177 sometimes given more-mnemonic names.
6179 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6181 * tidied up "make.sh" script
6182 * tidied up system directory structure
6183 * better "clean.sh" behavior
6184 * added doc/FOR-CMUCL-DEVELOPERS
6185 * many many small tweaks to output format, e.g. removing possibly-confusing
6186 trailing #\. character in DESCRIBE-INSTANCE
6187 * (EQUALP #\A 'A) no longer signals an error.
6188 * new hashing code, including EQUALP hashing
6189 * tidied up Lisp initialization and toplevel
6190 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6191 * command line argument processing
6192 * added POSIX-GETENV function to deal with Unix-ish environment variables
6193 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6194 terminating SBCL on EOF
6195 * non-verbose GC by default
6196 * There is no more "sbcl" shell script; the sbcl file is now the C
6197 runtime executable (just like CMU CL).
6198 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6200 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6201 symbol and package information as Lisp native symbol and package objects
6202 instead of strings naming symbols and strings naming packages. This way,
6203 whenever packages are renamed (as in warm init), debug information is
6204 transformed along with everything else.
6205 * tweaked the optimization policy declarations which control the building
6206 of SBCL itself. Now, among other things, the system no longer saves
6207 source location debugging information. (This helps two problems at once
6208 by reducing SBCL size and by keeping SBCL from trying to look for its
6209 sources -- which may not exist -- when reporting errors.)
6210 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6211 debugging and testing purposes
6212 * cleaned up printing, making the printer call PRINT-OBJECT for
6213 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6214 methods, giving nearly-ANSI behavior
6215 * converted almost all special variables to use *FOO* naming convention
6216 * deleted PARSE-TIME functionality, since it can be done portably
6217 * moved some files out of cold init into warm init
6218 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6220 * regularized formatting of source files
6221 * added an install.sh script
6222 * fixed ridiculous memory usage of cross-compiler by making
6223 compiler/alloc.lisp not try to do pooling unless it can hook
6224 itself into the GC of the cross-compilation host. Now the system
6225 builds nicely on my old laptop.
6226 * added :SB-ALLOC in target-features.lisp-expr
6227 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6228 was not implemented)
6229 * re-did condition handling and note reporting in the compiler. Notes
6230 are no longer handled by signalling conditions. Style warnings
6231 and warnings are handled more correctly and reported in such a way
6232 that it's easy to find one or the other in your output (so that you
6233 can e.g. figure out which of many problems caused COMPILE-FILE to
6235 * changed the severity of several compiler warnings from full WARNING
6236 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6237 compiler note reporting so that it doesn't use the condition system
6238 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6239 COMPILE-FILE command)
6240 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6241 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6242 no longer supported, since their implementation was deeply intertwingled
6243 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6244 * removed bogus "support" for compiler macros named (SETF FOO), and
6245 removed the compiler macro for SETF INFO (but only after making a fool
6246 of myself on the cmucl-imp mailing list by posting a bogus patch for
6247 DEFINE-COMPILER-MACRO..)
6248 * Compiled files containing forms which have side effects on the Lisp
6249 reader (such as DEFPACKAGE forms) are now handled more correctly.
6250 (Compiler queuing of top level lambdas has been suppressed by setting
6251 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6252 * deleted various currently-unused source files, e.g. gengc.lisp. They
6253 may be added back at some point e.g. when porting to other architectures,
6254 but until they are it's distracting to distribute them and to try to
6256 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6257 there were so many of them they're just distractions, and UNCROSS is
6258 known to be able to handle the current sources
6259 * moved PROFILE functionality into TRACE, so that it will be clear
6260 how the wrapping and unwrapping of functions when you profile them
6261 interacts with the wrapping and unwrapping of functions when you
6262 trace them. (Actually, the functionality isn't there yet, but at least
6263 the interface specification is there. Hopefully, the functionality will
6264 arrive with some future maintenance release.)
6265 * removed host-oops.lisp
6266 * changed signature of QUIT function to allow UNIX-CODE argument
6267 * fixed READ-SEQUENCE bug
6268 * tweaked verbose GC output so that it looks more like the progress
6269 output that ANSI specifies for functions like LOAD
6270 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6271 * added <http://sbcl.sourceforge.com> to the banner information printed by