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).
15 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
16 * enhancement: ASDF has been updated to version 2.017.
17 * enhancement: the --core command line option now accepts binaries with
19 * enhancement: when built with :sb-core-compression, core files (regular
20 or executable) can be compressed with zlib. Use the :COMPRESSION
21 argument to SAVE-LISP-AND-DIE to specify a compression level.
22 * enhancement: --[no-]merge-core-pages determines whether the runtime
23 hints the operating system that identical core pages between SBCL
24 processes should share the same physical memory. Default is to only
25 enable this for compressed cores.
26 * optimization: SLEEP no longer conses.
27 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
28 or bit-vectors when using the standard pretty-print dispatch table.
29 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
31 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
32 AREF, CHAR, etc. (lp#826971)
33 * bug fix: compiler-errors causes by integer arguments with composed of
34 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
35 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
36 expressions. (lp#770184)
37 * bug fix: complex single float literals are correctly aligned when used
38 as arguments of arithmetic operators.
39 * bug fix: on 32-bit platforms, rounding of double floats larger than a
40 fixnum is correct. (reported by Peter Keller)
41 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
42 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
44 * bug fix: redefining classes such that slots with custom allocation are
45 added or removed works again.
47 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
48 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
49 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
50 MAKE-SOCKET-STREAM if using SERVE-EVENT.
51 * enhancement: added support for socket keepalive timeout intervals
52 and probe counts on Linux.
53 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
54 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
55 * enhancement: added new toplevel options --quit and --non-interactive
57 * enhancement: the Windows port of SBCL now builds and runs on Wine
58 (thanks to Anton Kovalenko).
59 * enhancement: more, and more correct, SSE instruction definitions on
60 x86-64 (thanks to Alexander Gavrilov).
61 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
62 to help the processor execute spin loops, when applicable. Currently
63 implemented for x86 and x86-64.
64 * optimization: unsigned integer divisions by a constant are implemented
65 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
66 * optimization: improved type-derivation for LOAD-TIME-VALUE.
67 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
68 instructions. (lp#814688)
69 * bug fix: COERCE to unfinalized extended sequence classes now works.
70 (reported by Jan Moringen; lp#815155)
71 * bug fix: a compiler error during typecheck generation, reported by Eric
73 * bug fix: obsolete instance protocol fires when shared slots are added
75 * bug fix: fixed-format floating point printing with scaling factors.
77 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
78 backtraces. (lp#818460)
79 * bug fix: better backtraces for interrupted syscall frames on x86.
81 * bug fix: SSE comparison instructions can be disassembled even when one
82 operand is in memory. (lp#814702)
83 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
84 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
85 type information associated with the VALUES form.
86 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
88 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
89 first write (lp#561642).
90 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
91 * bug fix: bound propagation involving conversion of large bignums to
92 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
94 * bug fix: &REST to &MORE conversion still works in unsafe call to known
95 functions; reported by Lutz Euler (lp#826459).
96 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
99 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
100 * enhancement: errors from FD handlers now provide a restart to remove
101 the offending handler.
102 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
104 * enhancement: location of user or system initialization file can now easily
105 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
106 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
107 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
108 the thunk, as a keyword argument, :arguments.
109 * enhancement: constraint propagation is simplified (and sped up) when
110 COMPILATION-SPEED > SPEED.
111 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
112 * enhancement: debugger understands &MORE arguments better.
113 * optimization: extracting bits of a single-float on x86-64 has been
114 optimized. (lp#555201)
115 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
116 when (> SPEED SPACE).
117 * optimization: local call trampolines (x86 and x86-64) are emitted
119 * optimization: implicit value cells for dynamic-extent closed-over bindings
120 on x86 and x86-64 can hold unboxed values as well.
121 * meta-optimization: improved compilation speed, especially for large
122 functions. (lp#792363 and lp#394206)
123 * bug fix: bound derivation for floating point operations is now more
124 careful about rounding possibly closing open bounds. (lp#793771)
125 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
126 backwards incompatible change in 1.0.48.27)
127 * bug fix: occasional debugger errors in when a type-error occured in a
128 function with dynamic-extent &rest list.
129 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
130 boa-construtors can be used to initialized structure slots.
131 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
132 (lp#795705, regression)
133 * bug fix: DIRECTORY works better on logical pathnames.
134 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
135 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
136 * bug fix: the compiler no longer constant-folds NaNs in
137 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
138 * bug fix: FORMAT now handles floating point rounding correct, eg.
139 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
141 * bug fix: style warning during lambda-list introspection of generic
142 functions with both optional and key argments.
143 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
145 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
148 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
149 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
150 interrupts for its body.
151 * enhancement: source locations are now available for files loaded as
152 source, compile-time-too evaluation, and initialization files.
153 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
154 virtual source-file information, eg. overriding input-file of COMPILE-FILE
155 when a temporary file is used for compilation.
156 * enhancement: ASDF has been updated to version 2.015.3.
157 * enhancement: backtraces involving frames from the default evaluator are
159 * enhancement: RUN-PROGRAM works with user-defined binary input and output
161 * enhancement: more informative compile-time warnings and runtime errors for
162 type-errors detected at compile-time.
163 * enhancement: deadlock detection for mutexes and spinlocks.
164 * enhancement: dynamic-extent for &rest lists stack allocate only their
165 spines, not their argumets. While portable code should not rely on this,
166 particularly in combination with inlining, it should make dynamic-extent
167 easier to use safely.
168 * enhancement: SB-POSIX improvements:
169 ** WNOHANG and WUNTRACED are exported.
170 ** SYSCALL-ERROR now also provides the name of the failing system call.
171 * enhancement: --script improvements:
172 ** errors on standard input, output, and error streams are handled and
173 cause scripts to exit silently, making them easier to use in shell
175 ** backtraces from scripts now go to standard error instead of the
176 terminal even if one is available.
177 ** --script can be an argument, causing the script to be loaded from
179 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
180 strings to foreign memory.
181 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
182 a file, making it easier to understand heap dynamics.
183 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
184 allows the compiler to automatically elide rest-list allocation so long as
185 the call sites are in functions that the compiler knows cannot escape.
187 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
188 especially in safe code when none of the required arguments have changed
190 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
191 uninterruptible, as well as blocking reads from socket streams created
192 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
193 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
194 from the to-char if the from-char is not a dispatch-macro character.
195 * bug fix: references to undefined variables in function calls that are
196 optimized away now signal a runtime error. (lp#722734)
197 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
198 types from a function defined in the same file. (regression from
200 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
202 * bug fix: spurious errors during QUIT when standard streams were closed.
204 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
205 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
206 years, is now no longer supported.
207 * enhancement: read() and write() have been added to SB-POSIX.
208 * enhancement: types of DEFSTRUCT constructors are proclaimed more
209 accurately, allowing better typechecking of call-sites.
210 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
211 are no longer caught. (reverted to pre 1.0.34 behaviour)
212 * optimization: slightly faster ISQRT. (lp#713343)
213 * bug fix: better support for Solaris /bin/sh in sh-based tests.
214 * bug fix: TRACE behaves better when attempting to trace undefined
215 functions. (lp#740717)
216 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
217 to (FUNCALL #'(LAMBDA ...) ...).
218 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
219 a compile-time error. (lp#720382)
220 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
222 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
223 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
224 optimization. (regression from 1.0.45.18/1.0.46.15)
225 * bug fix: package locks did not protects against compile-time side-effects
226 of DEFUN. (lp#675584)
227 * bug fix: --dynamic-space-size argument is validated more carefully.
229 * bug fix: memory fault from printing a malformed simple-condition.
231 * bug fix: redefining classes so that slot-definition classes change now
232 engages the obsolete instance protocol. (lp#766271)
233 * bug fix: constant improper lists could break source coverage recording.
235 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
238 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
239 * bug fix: fix mach port rights leaks in mach exception handling code on
240 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
242 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
243 * enhancement: redefinition warnings for macros from different files. (lp#434657)
244 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
245 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
246 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
247 processed using EVAL -- now the appropriate toplevel form is reported instead.
248 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
249 declarations. (lp#726331)
250 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
251 that NIL/NULL is excluded from the type.
252 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
254 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
256 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
257 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
258 stack-allocated values out of their dynamic-extent. (lp#310175)
259 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
260 x86-64 builds caused a type-error.
261 * bug fix: calling COMPILE with something else than a lambda-expression as the
262 second argument reports a more sensible error. (lp#718905)
263 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
264 are detected. (lp#520607)
265 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
267 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
268 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
269 methods. (regression from 1.0.45.18)
270 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
271 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
272 * bug fix: several foreign functions accepting string also accepted NIL and
273 consequently caused a memory fault at 0 now signal a type-error instead.
275 * bug fix: under rare circumstances, constraint propagation could rewrite a
276 variable reference to refer to a variable not in scope, causing an error
277 during physical environment analysis when attempting to close over the
278 variable. (lp#551227)
279 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
281 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
282 * enhancement: largefile support on Solaris.
283 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
284 arguments (lp#710017)
285 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
286 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
288 * optimization: ERROR and CERROR are approximately 5 times faster.
289 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
290 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
291 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
292 up instance creation in those cases.
293 * optimization: arithmetic operations with multiple constant arguments in now
294 have them reduced at compile-time. (lp#676414)
295 * optimization: determining current character position on string-streams for
296 pretty-printing was overly slow.
297 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
298 lifetime analysis to overwrite closed-over variables (lp#681092).
299 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
300 were not handled correctly (lp#713063).
301 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
303 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
304 mistake. (lp#667297).
305 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
306 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
307 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
308 unintern the wrong symbol with the same name. (lp#693796)
309 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
310 making it possible to restore the initial table if it has been messed up.
313 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
314 * enhancement: ~/ and ~user/ are treated specially in pathnames.
315 Refer to documentation for details.
316 * enhancement: ASDF has been updated to version 2.010.
317 * optimization: mutated closed-over variables that are only accessed by
318 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
319 declared to be DYNAMIC-EXTENT) are stored directly in their containing
320 stack frame, rather than allocating a VALUE-CELL (lp#586103).
321 * optimization: UNWIND-PROTECT cleanup functions are now declared
323 * bug fix: backtracing function with &REST arguments now shows the full
324 argument list. (lp#310173)
325 * bug fix: return types for functions with complex lambda-lists are now
326 derived properly (lp#384892)
327 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
328 long string arguments slowed the compiler down to a crawl.
329 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
330 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
331 in the DEFMETHOD body.
332 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
333 messages, being instead replaced with the corresponding function name.
334 * bug fix: don't derive overly complex unions of numeric types for arithmetic
335 operators. (lp#309448)
337 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
338 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
339 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
340 * enhancement: ALLOCATION-INFORMATION also provides the page the object
342 * enhancement: default dynamic-space size can be configured at build-time
343 without touching source, using the --dynamic-space-size argument to make.sh.
344 * enhancement: DESCRIBE recognizes symbols naming optimization policy
345 qualities, and mentions ALWAYS-BOUND declarations.
346 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
348 * enhancement: ASDF has been updated to 2.009.
349 * enhancement: the system detects known type-erros in calls better,
350 signalling a full warning about violated proclaimed FTYPEs and violations
351 of derived FTYPEs within the same file, including self-calls.
352 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
353 * optimization: constant-folding exploits numeric and character types, in
354 addition member types.
355 * optimization: numeric, character and member types that are inhabited by
356 exactly one value are tested with EQL.
357 * optimization: more conditional branches are eliminated during IR1.
358 Branches are simplified before performing if/if-conversion, and simple
359 equivalent branches (that only read the same constant or variable) are
361 * improvements to the Windows port:
362 ** change: canonical unparsing form for pathname namestrings now uses / as
363 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
364 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
365 on Windows. (thanks to Kalyanov Dmitry)
366 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
368 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
369 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
370 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
371 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
373 * bug fix: interrupts arriving during CL:OPEN caused an error.
374 * bug fix: overeager character buffering could cause input to block
375 spuriously when reading from a pipe (lp#643686)
376 * bug fix: more efficient timer expiry should avoid starvation on systems
377 where number of SIGALRMs per second is restricted. (lp#375515)
378 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
379 * bug fix: compile-times no longer scale linearly with the size of
380 quoted lists in source-code. (lp#654289)
381 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
382 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
383 so badly. (lp#654485)
384 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
385 an error for eg. STRUCTURE. (lp#458015)
386 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
387 (lp#613871, thanks to Roman Marynchak)
388 * bug fix: more reliable &REST list type derivation. (lp#655203)
389 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
390 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
391 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
392 also declared NOTINLINE. (lp#655581)
393 * bug fix: the compiler could attempt to emit constant left shifts of
394 greater value than n-word-bits. (lp#309063)
395 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
396 type information for the function being set. (lp#659220)
397 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
398 containing self-calls were recompiled with a new signature, and failed
399 to warn when a self-call using the old signature was left in. (lp#655126)
400 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
401 :DEFAULT when the default external had character size other than 8 bits.
403 * bug fix: derived types of functions in the same file were implicitly
404 trusted, leading to potential heap corruption when those function were
405 defined incompatibly. (lp#657499)
406 * bug fix: existing ASDF source registries are ignored when building
408 * bug fix: short-form DEFSETF checks that the second argument is a symbol
409 (lp#655824, thanks to Roman Marynchak)
410 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
411 package-lock violation was detected. (lp#660752)
412 * bug fix: the system can store different docstrings for a single function
413 under different names. (lp#661631, regression from 1.0.29.24)
414 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
415 properly. (lp#384801)
416 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
417 of specified length could confuse the type derivation in unsafe code.
419 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
420 fork with multiple Lisp threads running is made on every platform,
421 not just Darwin. (lp#451111)
422 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
423 around when core was saved, which could cause undefined behaviour when the
425 * bug fix: Allow UNTRACE of functions that are no longer defined
426 (lp#667657, thanks to Attila Lendvai)
427 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
428 compile-time warning (lp#664373, thanks to Stas Boukarev)
430 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
431 * incompatible change: FD-STREAMS no longer participate in the serve-event
432 event-loop by default. (lp#316072)
433 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
434 affects streams from CL:OPEN.
435 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
436 default, but this is liable to change: applications needing serve-event
437 for socket streams should explicitly request it using :SERVE-EVENTS T
439 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
441 * enhancement: CLOS effective method functions and defclass slot typechecking
442 function now have debug names for use in backtraces and profiles.
443 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
445 * enhancement: symbols are printed using fully qualified names in several
446 error and warning messages which are often associated with package
447 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
448 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
449 thanks to Andrew Golding)
450 * bug fix: reading /proc files on Linux works. (lp#425199)
451 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
453 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
454 breaking code that tried to write the value of a printer control variable.
455 (lp#581564, thanks to Stas Boukarev)
456 * bug fix: WRITE compiler macro did not handle output stream designators
457 correctly. (lp#598374, thanks to Stas Boukarev)
458 * bug fix: better availability of names of foreign functions in backtraces
459 on Linux. (lp#626962, thanks to Stas Boukarev)
460 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
461 lp#627581, thanks to Josh Elsasser and Jim Wise)
462 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
463 thanks to Josh Elsasser)
464 * bug fix: using aliases for builtin classes as defmethod specializers
465 without adding DEFTYPEs for them works. (lp#618387)
466 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
468 * bug fix: legally dynamic-extent lists and vectors used as
469 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
470 * bug fix: inline-expansion creating references to dead lambda-variables
471 (lp#454681, thanks to Alexey Dejneka)
472 * bug fix: better error message for bogus numerical arguments to RANDOM.
473 (lp#598986, thanks to Stas Boukarev)
474 * bug fix: the compiler occasionally inlined references from incompatible
475 environments occurs. (lp#308951)
476 * bug fix: the compiler threw an error when trying to compile a local
477 function (labels or flet) known to take a specialized complex argument.
478 (not in launchpad, reported by sykopomp in #lispgames)
479 * bug fix: package-locks failed to protect against compile-time effects of
480 DEFUN when the symbol previously had a macro definition. (lp#576637)
481 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
482 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
483 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
484 * bug fix: evaluation in debugger REPL works using the global context when
485 in frames that do not have sufficient debug information.
486 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
488 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
490 * bug fix: interrupt taking longer than the requested period caused SLEEP
491 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
493 changes in sbcl-1.0.42 relative to sbcl-1.0.41
495 ** Cross-compilation host is now specified to make.sh using
496 command-line argument --xc-host=<command> instead of a positional
497 argument. (thanks to Daniel Herring)
498 ** Install location can be specified to make.sh using command-line
499 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
500 * optimization: The default implementation of
501 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
502 * enhancement: Explicit memory barrier operations are now available for use
503 by multithreaded code. See documentation for details.
504 * enhancement: Experimental support for threading on Linux/PPC.
505 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
506 * bug fix: EXPT signals an error if first argument is a zero and second
507 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
508 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
509 (lp#576594, thanks to Roman Marynchak)
510 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
511 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
513 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
514 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
515 cached, leading to many fewer expensive calls to
516 COMPUTE-APPLICABLE-METHODS.
517 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
518 CLASS argument, search for and call an appropriate optimized ctor function
520 * bug fix: WRITE always returns the correct value.
522 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
523 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
524 * bug fix: Name conflicts between symbols passed as arguments to a single
525 call to IMPORT no longer add multiple symbols with the same name to the
526 package (detectable via DO-SYMBOLS).
527 * bug fix: support building without the dlshim on darwin x86 and x86-64
529 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
531 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
532 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
534 * bug fix: linkage-table entries on PPC now no longer overflow their
535 space allocation (potentially causing crashes if they are written out
537 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
538 platforms, preventing the GC from seeing stale pointers on the control
539 stack in subsequent GCs (which would, and does, break invariants).
540 * bug fix: 32-bit unicode external formats now work on big-endian systems.
541 * bug fix: Literal characters with code points greater than about 32767
542 now work on PPC UNICODE builds.
543 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
544 high order bits are explicitly cleared out. In some contrived situations,
545 this could lead to wrong results in mixed real/complex float arithmetic.
546 * bug fix: Fix function/macro redefinition warnings when building with
547 clisp. (lp#576787, thanks to Josh Elsasser)
548 * new platform: experimental support for ppc/openbsd (thanks to Josh
550 * bug fix: Floating-point traps now work on ppc/linux.
552 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
553 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
554 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
555 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
556 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
557 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
558 SB-THREAD:GRAB-MUTEX.
559 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
560 contain additional data structures and tools for concurrent programming;
561 at the moment it contains a lock-free queue, and a lock-free mailbox
563 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
564 GET-MUTEX but takes &key rather than &optional parameters. Also added
565 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
567 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
568 SB-THREAD:WAIT-ON-SEMAPHORE.
569 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
571 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
572 conditions to defer the deadline for forever.
573 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
575 * enhancement: errors from NO-APPLICABLE-METHOD and
576 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
577 generic function call.
578 * enhancement: SB-BSD-SOCKET improvements
579 ** sockets and socket streams now have a more informative printed
580 representation based on the corresponding SOCKET-NAME and
582 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
584 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
585 CL:CLOSE when appropriate, and no longer disassociates the stream
586 from the socket if close failed. (lp#543951)
587 * improvements to the instrumenting profiler
588 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
589 ** optimization: counters no longer use locks for the overflow mode.
590 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
591 incurred an off-by-one miscount.
592 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
593 * enhancement: improved DEFMETHOD pretty-printing.
594 * enhancement: perform range reduction when arguments are too large for
595 x87's transcendentals (instead of returning 0). (lp#327192)
596 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
597 some of CL-PPCRE's macros. (lp#570079)
598 * enhancement: our machine code is slightly less hostile to valgrind on
600 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
601 to Robert Swindells and Aleksej Saushev)
602 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
603 * bug fix: a rare case of startup-time page table corruption.
604 * bug fix: a semaphore with multiple waiters and some of them unwinding due
605 to timeouts could be left in an inconsistent state.
606 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
607 * bug fix: misoptimization of multiplication by one in
608 (SB-C::FLOAT-ACCURACY 0) policies.
609 * bug fix: miscounts in SB-PROFILE.
610 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
611 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
612 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
613 up itself" (March 2010) for further details.
614 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
615 against length of the list if the element is found before the specified
616 END is reached. (thanks to Alec Berryman, lp#554385)
617 * bug fix: errors signalled during package graph modification no longer
618 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
619 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
620 :SB-DOC feature. (lp#552564)
621 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
622 * bug fix: more robust runtime executable path detection. (lp#375549)
623 * bug fix: GCD always returns positive values. (lp#413680)
624 * bug fix: Converting division to multiplication by reciprocal handles
626 * bug fix: We were too eager in eliding range reduction tests on x87.
627 The maximal magnitude is 2^63, not 2^64.
628 * bug fix: Transforms for TRUNCATE don't die when the result is completely
630 * bug fix: Maybe restore buildability on Alpha.
631 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
633 * bug fix: RANDOM-STATE can be printed readably again.
634 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
635 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
636 types) could result in type mismatches during compilation.
638 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
639 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
640 stack frame thrown from.
641 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
642 compiler optimization qualities inside dynamic extent of its body.
643 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
644 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
646 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
647 constraint propgation, allowing better compilation eg. when used to
648 access structures with WITH-SLOTS. (lp#520366)
649 * optimization: the compiler is now more aware of the type of the underlying
650 storage vector for multidimensional simple arrays resulting in better code
651 for accessing such arrays.
652 * optimization: passing NIL as the environment argument to TYPEP no longer
653 inhibits optimizing it. (lp#309788)
654 * optimization: more efficient register usage when handling single-float
655 arguments on x86-64. (thanks to Lutz Euler)
656 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
657 pre-allocated temporary vectors. (lp#496249)
658 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
659 in :INITIAL-CONTENTS. (lp#523612)
660 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
661 functions. (lp#524707)
662 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
663 WITH-SLOTS usages during compilation.
664 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
665 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
666 all x86oid platforms with :UD2-BREAKPOINTS target feature.
667 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
668 instruction (tested on x86oid linux with ud2-breakpoints).
669 * bug fix: slam.sh now works on win32.
670 * bug fix: better differences of numeric types. (lp#309124)
671 * bug fix: arrays declared intersection and union types can have their
672 upgraded element type derived. (lp#316078)
673 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
674 threads started during profiling. (lp#472499)
675 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
677 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
678 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
679 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
680 values instead of signaling an error. (lp#309093)
681 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
683 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
684 declarations (lp#497321)
685 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
686 and failed to detect circular lists (lp#452008)
687 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
689 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
690 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
691 due to it, so that handlers can run.
692 * bug fix: reparsing undefined types if they have become defined since
694 * bug fix: missing &REST type in a proclamation for a function with both
695 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
696 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
697 expanded calls (lp#542174)
698 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
699 than just at toplevel form.
701 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
702 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
703 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
704 but work on type specifiers.
705 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
706 to name a type specifier.
707 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
708 specifier is valid where "valid" basically means "would be accepted as
709 second argument of TYPEP".
710 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
711 returns the function's declared, or derived FTYPE.
712 * new feature: SB-POSIX now supports accessing the d_ino member of
713 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
714 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
715 provide for seeding a RANDOM-STATE object with user-provided data or
716 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
717 attempt to initialize the returned state from the operating system's
718 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
719 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
720 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
721 * bug fix: Fix grammar and style issues for the docstrings of
722 printer-related variables and functions. (Thanks to mon_key; launchpad
724 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
726 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
727 in a row even though a handler defered the deadline long into the
729 * bug fix: A deadline handler was run without interrupts enabled for a
730 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
731 in infinitely spinning, non-killable threads.
732 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
733 before reaching the erring stack frame.
734 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
735 real power. (launchpad bug lp#525949)
736 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
737 GENCGC platforms. (launchpad bug lp#529014)
738 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
739 (launchpad bug lp#525916)
740 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
741 (Thanks to Robert Goldman)
743 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
744 * optimization: ROUND with a single single-float or double-float argument
745 is properly inlined when possible.
746 * optimization: Slightly better code is generated for integer<->float
747 conversions and for single-float<->double-float conversions on x86-64.
748 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
749 code for 32-bit and 64-bit rotations on x86-64.
750 * bug fix: The install script changes the ownership of directories as well
751 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
752 launchpad bug lp#508485)
753 * bug fix: TRUNCATE with a single single-float or double-float argument is
754 properly inlined when possible. (launchpad bug lp#489388)
755 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
756 no longer causes a compiler error on x86 and ppc.
757 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
758 always relative to *READTABLE* rather than the passed argument.
760 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
761 * minor incompatible change: threading support is now enabled by default
763 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
765 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
766 are now caught and reported just like errors during macroexpansion.
767 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
768 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
769 * enhancement: ASDF systems can now depends on SB-QUEUE.
770 * fixes and improvements related to Unicode and external formats:
771 ** bug fix: error handling and restart usage in the ucs-2 external format
773 ** there is now an implementation of the ucs-4 external format.
774 ** the utf-16 and utf-32 external formats are supported.
775 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
776 in the environment. setenv() and unsetenv() are also provided. (reported by
777 Fare Rideau; launchpad bug lp#460455)
778 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
779 loading. This ensures sensible errors for .FASL files from other
780 implementations on case-insensitive filesystems. (reported by Willem
781 Broekema; launchpad bug lp#489417)
782 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
783 Willem Broekema; launchpad bug lp#489698).
784 * bug fix: some minor code rearrangements to reenable warning-free building
785 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
786 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
788 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
791 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
792 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
793 * improvement: support O_LARGEFILE access to files larger than 2GB on
794 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
795 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
796 definitions for methods specializing on the passed class itself.
797 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
798 definitions for methods specializing on the passed class itself, or on
800 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
801 about itself during the build (e.g. for M-? in Slime), if this flag is
802 enabled in customize-target-features.lisp. This will increase the core
803 size by about 5-6mb, though, so it's mostly interesting to SBCL
805 * new feature: various GENCGC tuning parameters have been experimentally
806 documented and exported from SB-EXT. See documentation for details.
807 * fixes and improvements related to Unicode and external formats:
808 ** the Unicode character database has been upgraded to the
809 Unicode 5.2 standard, giving names and properties to a number of new
810 characters, and providing a few extra characters with case
812 ** improvement: restarts for providing replacement input/output on coding
813 errors for fd-stream external formats.
814 ** improvement: where :<encoding> is a keyword corresponding to an
815 external format the system supports, it is now possible to specify
816 (:<encoding> :replacement <character>) as an external format which will
817 automatically substitute <character> on encoding or decoding errors for
818 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
820 ** improvement: the file streams underlying the standard streams (such as
821 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
822 which uses the replacement mechanism to handle encoding errors,
823 preventing various infinite error chains and unrecoverable I/O
825 ** minor incompatible change: the utf-8 external format now correctly
826 refuses to encode Lisp characters in the surrogate range (char-codes
827 between #xd800 and #xdfff).
828 ** fix a typo preventing conversion of strings into octet vectors
829 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
831 ** fix a bug in the octet multibyte handling of decoding errors and the
832 USE-VALUE restart. (launchpad bug lp#314939)
833 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
834 restart on fd-stream decoding errors.
835 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
836 error is near the end of file.
837 ** fix a double-error case in unibyte octet conversions, when the first
838 use of USE-VALUE is ignored.
839 ** fix bugs in handling of undefined code points in unibyte encodings.
840 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
841 streams after an UNREAD-CHAR.
842 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
843 object is allocated in a boxed region of dynamic space.
844 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
845 fork with multiple Lisp threads running is made, instead of going
846 ahead with unpredictable consequences. (reported by Leslie Polzer)
847 * bug fix: uses of slot accessors on specialized method parameters within
848 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
849 error while finalizing the class. This fix may cause classes with slot
850 accessors to be finalized later than previously. (reported by Lars Rune
851 Nøstdal; launchpad bug lp#473699)
852 * bug fix: restore buildability on the MIPS platform. (regression from
853 1.0.30.38, reported by Samium Gromoff)
854 * bug fix: inspecting closures is less likely to fail with a type error.
855 * bug fix: no timer starvation when setting the system clock back.
856 (launchpad bug lp#460283)
857 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
858 standard pprint dispatch table as specified by CLHS.
859 * bug fix: give CLISP a hint about a type declaration to enable it to build
860 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
862 * bug fix: correctly dump literal objects in defaulting forms of arglists.
863 (reported by Attila Lendvai; launchpad bug lp#310132)
864 * bug fix: distinguish in type specifiers between arrays that might be
865 complex and arrays that are definitely complex. (launchpad bug lp#309129)
866 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
867 type. (reported by Levente Mészáros; launchpad bug lp#485972)
868 * bug fix: setting the value of a symbol-macro within a method in the
869 presence of type declarations works properly again. (reported by Iban
870 Hatchondo; launchpad bug lp#485019)
872 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
873 * optimization: faster FIND and POSITION on strings of unknown element type
874 in high SPEED policies. (thanks to Karol Swietlicki)
875 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
877 * improvement: better error signalling for bogus parameter specializer names
878 in DEFMETHOD forms (reported by Pluijzer)
879 * bug fix: DELETE-FILE once again works on logical pathnames (regression
881 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
883 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
884 removes previous default initargs (reported by Lars Rune Nøstdal and
886 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
887 lambda-lists. (reported by Peter Seibel)
888 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
889 correctly when starting from an executable core without saved runtime
890 options (reported by Faré Rideau, thanks to Zach Beane)
891 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
892 an optimization note instead. (reported by Martin Cracauer)
893 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
894 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
895 new process group if it doesn't need to share stdin with the sbcl
896 process. (thanks to Leslie Polzer)
897 * bug fix: SATISFIES could be misoptimized to refer to a local function.
898 (reported by Stanislaw Halik)
900 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
901 * improvement: stack allocation is should now be possible in all nested
902 inlining cases: failure to stack allocate when equivalent code is manually
903 open coded is now considered a bug.
904 * improvements related to Unicode:
905 ** the Unicode character database has been upgraded to the
906 Unicode 5.1 standard, giving names and properties to a number of new
907 characters, and providing a few extra characters with case
909 ** the system now recognizes and produces names for Unicode Hangul
911 ** the EBCDIC-US external-format is now supported for octet operations
912 (as well as for stream operations).
913 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
914 be used to output toplevel compile-time effects into a separate .CFASL
916 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
917 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
919 * optimization: TRUNCATE on known single- and double-floats is upto 25%
921 * optimization: division of floating point numbers by constants uses
922 multiplication by reciprocal when an exact reciprocal exists.
923 * optimization: multiplication of single- and double-floats floats by
924 constant two has been optimized.
925 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
926 sufficient type information is available. (thanks to Leslie Polzer)
927 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
928 known structure objects are as efficient as defstruct generated accessors.
929 * optimization: unused vector creation can now be optimized away.
930 * improvement: ASDF systems can now depends on SB-INTROSPECT.
931 * improvement: a STYLE-WARNING is signalled when a generic function
932 clobbers an earlier FTYPE proclamation.
933 * improvement: the compiler is able to track the effective type of
934 generic function across method addition and removal even in the
935 absence of an explicit DEFGENERIC.
936 * improvement: DESCRIBE now reports on symbols naming undefined
937 but assumed or declared function as well.
938 * improvement: recompilation of systems using SB-GROVEL now works
939 (thanks to Leslie Polzer)
940 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
941 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
943 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
944 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
945 well as user defined declaration names.
946 ** VARIABLE-INFORMATION is now aware of alien variables.
947 * improvement: improved address space layout on OpenBSD (thanks to Josh
949 * improvement: pretty-printing of various Lisp forms has been improved
950 (thanks to Tobias Rittweiler)
951 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
952 unused were deleted in safe code. (reported by John Fremlin)
953 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
955 * bug fix: some out-of-line array predicates were missing (reported by
957 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
959 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
960 (thanks to Larry D'Anna)
961 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
962 as well. (reported by Josh Elsasser)
963 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
964 leading to possible attempts to delete the same file twice. See docstring
965 on DELETE-FILE for details. (reported by John Fremlin)
966 * bug fix: DELETE-FILE once again deletes the file named by the pathname
967 designator argument, rather than its truename. (reported by Luis
969 * bug fix: the low-level debugger had 32-bit assumptions and was missing
970 information about some array types. (thanks to Luis Oliveira)
971 * bug fix: moderately complex combinations of inline expansions could
972 be miscompiled if the result was declared to be dynamic extent.
973 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
974 form (+ <variable> <integer>) were miscompiled under certain
976 * bug fix: in some cases no compiler note about failure to stack allocate
977 was emitted, even if the objects were in fact heap allocated.
978 * bug fix: minor violation of "otherwise inaccessible" rule for stack
979 allocation could cause objects users might reasonably expect to
980 be heap allocated to be stack allocated.
981 * bug fix: DESCRIBE signalled an error for generic functions under
982 certain circumstances. (thanks to Leslie Polzer)
983 * bug fix: Fixed spelling of an error message.
985 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
986 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
987 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
988 of SB-THREAD:THREAD-ERROR-THREAD.
989 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
990 * new feature: docstrings for local and anonymous functions are no longer
991 discarded. (thanks to Leslie Polzer)
992 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
993 values in other threads.
994 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
995 about object allocation.
996 * optimization: division of a real float by a complex float is implemented
997 with a specialised code sequence.
998 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
999 keywords is an order of magnitude faster.
1000 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1001 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1002 methods, and similarly for non-standard metaclass classes as long as there
1003 are no methods additional on MAKE-INSTANCE.
1004 * optimization: more efficient type-checks for FIXNUMs when the value
1005 is known to be a signed word on x86 and x86-64.
1006 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1007 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1009 * optimization: compiler is smarter about delegating argument type checks to
1011 * optimization: several character functions are now compiled somewhat more
1012 efficiently. (reported by Lynn Quam)
1013 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1014 * improvement: less unsafe constant folding in floating point arithmetic,
1015 especially for mixed complex/real -float operations.
1016 * optimization: constant double and single floats are stored in native
1017 unboxed format on x86[-64].
1018 * optimization: smarter code for arithmetic operations with constant floats,
1019 complex floats, or integers on x86[-64].
1020 * optimization: smarter code for conjugate/multiplication of float complexes
1021 and abs/negate of floats on x86-64.
1022 * optimization: more efficient complex float and real float operations on
1024 * improvement: complex float division is slightly more stable.
1025 * improvement: DESCRIBE output has been reworked to be easier to read and
1026 contains more pertinent information.
1027 * improvement: failure to provide requested stack allocation compiler notes
1028 provided in all cases (requested stack allocation not happening without a
1029 note being issued is now considered a bug.)
1030 * bug fix: SB-POSIX exports the documented types and functions
1031 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1032 types. (reported by "abhi")
1033 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1034 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1035 (thanks to Paul Khuong)
1036 * bug fix: looping around HANDLER-CASE could silently consume stack space
1037 on each iteration. (reported by "foobar")
1038 * bug fix: better error signalling when calls to functions seeking elements
1039 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1040 (reported by Tobias Rittweiler)
1041 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1042 directory components now works as it used to. (various prolems reported by
1043 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1044 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1045 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1046 * bug fix: bogus undefined variable warnings from fopcompiled references to
1047 global variables. (thanks to Lars Rune Nøstdal)
1048 * bug fix: foreign function names should now appear in backtraces on
1049 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1050 * bug fix: SETF compiler macro documentation strings are not discarded
1052 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1053 (thanks to Alex Plotnick)
1054 * bug fix: SLEEP accepts large integer arguments, truncating them to
1055 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1056 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1057 * bug fix: compiler notes for expensive slot type checks could be emitted
1058 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1060 changes in sbcl-1.0.29 relative to 1.0.28:
1061 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1062 https://bugs.launchpad.net/sbcl
1063 Bugs can be reported directly there, or by sending email to
1064 sbcl-bugs@lists.sourceforge.net
1065 (no subscription required.)
1066 * minor incompatible change: under weak type checking policy integer
1067 types are weakened less aggressively.
1068 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1069 allowed to return, which causes SBCL to quit with exit status 0. Previously
1070 if the function returned with a small integer return value, that value
1071 was accidentally reused as the exit status.
1072 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1073 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1074 :HASH-FUNCTION argument. Refer to user manual for details.
1075 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1077 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1078 microseconds since the Unix epoch on all platforms.
1079 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1080 allows the compiler to safely elide boundedness checks for special
1082 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1083 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1084 efficiency measure for threaded platforms, but also valueable in
1086 * new feature: UNC pathnames are now understood by the system on Windows.
1087 * optimization: the compiler uses a specialized version of FILL when the
1088 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1090 * optimization: accesses to potentially non-simple arrays where element type
1091 is known are 50% faster.
1092 * optimization: compiler now generates faster array typechecking code.
1093 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1095 * optimization: multidimensional array accesses in the absence of type
1096 information regarding array rank are approximately 10% faster due to
1097 open coding of ARRAY-RANK.
1098 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1099 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1101 * optimization: result of call to VECTOR can now be stack allocated.
1102 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1103 as long as the resulting array is one-dimensional and has a known
1104 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1105 length of the list matches the known length of the vector does not
1106 allocate the list as an intermediate step. Ditto for VECTOR and simple
1108 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1109 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1110 known element type, and is known to be simple and one dimensional.
1111 * improvement: SBCL now emits a compiler note where stack allocation was
1112 requested but could not be provided (not in all cases, unfortunately)
1113 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1114 * improvement: pretty-printing loop has been implemented properly. (thanks
1115 to Tobias Rittweiler)
1116 * documentation: CLOS slot typechecing policy has been documented.
1117 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1118 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1119 pointer, leading to memory faults. (thanks to Bart Botta)
1120 * bug fix: better floating point exception handling on x86/OpenBSD.
1121 (thanks to Josh Elsasser)
1122 * bug fix: exit status from QUIT when called under --script was lost
1123 (reported by Hubert Kauker)
1124 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1125 same implementation of FILL to initialize the array, even if a more
1126 efficient one was available (reported by Stas Boukarev, thanks to
1128 * bug fix: potential miscompilation of array stack allocation on x86 and
1129 x86-64. (reported by Time Tossavainen)
1130 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1131 result in their subforms being treated as top level forms. (reported by
1133 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1134 than a machine register could leave garbage in the high bits of the
1135 result register (bug 316325).
1136 * bug fix: disable address space randomization Linux/x86-64 as well,
1137 not just x86-64. (reported by Ken Olum)
1138 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1139 generate incorrect code.
1140 * bug fix: #201; type inference for CONS and ARRAY types could derive
1141 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1142 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1143 could not be assigned to or bound with PROGV. (reported by Lorenz
1145 * bug fix: the value of CL:- in the inspector was the previous expression
1146 evaluated rather than the expression being evaluated.
1147 * bug fix: constants can no longer be locally declared special.
1148 * bug fix: signals delivered to threads started from foreign land (read:
1149 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1150 thread by blocking all signals and resignalling.
1151 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1152 from :INITFORM, if any.
1154 changes in sbcl-1.0.28 relative to 1.0.27:
1155 * a number of bugs in cross-compilation have been fixed, with the ultimate
1156 result that building under (at least) clisp should be much more reliable.
1157 * minor incompatible changes: echo-streams now propagate unread-char to the
1158 underlying input stream, and no longer permit unreading more than one
1160 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1161 frames, allowing for instance more reliable backtraces.
1162 * improvement: the debugger REPL can now reference lexical variables
1163 by name directly for code compiled with (DEBUG 3).
1164 * improvement: errors from malformed declarations now have better source
1165 paths associated with them. (thanks to Tobias Rittweiler)
1166 * optimization: faster local calls on x86/x86-64
1167 * bug fix: some error messages for out-of-bound array indexes confused the
1168 index and the bound. (thanks to Stas Boukarev)
1169 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1171 * bug fix: running regressions tests in shells without OSTYPE set now works.
1172 (reported by Harald Hanche-Olsen)
1173 * bug fix: more robust static space exhaustion signalling from
1174 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1175 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1176 docstring away instead of storing it under names such as (LAMBDA (X)).
1177 (reported by Leslie Polzer)
1178 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1179 (thanks to Ole Arndt for the patch)
1180 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1181 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1182 potentially-invalid effective methods in its cache.
1183 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1184 instances as well (thanks to Paul Khuong)
1185 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1186 SB-POSIX:WAITPID and their C equivalents.
1187 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1189 changes in sbcl-1.0.27 relative to 1.0.26:
1190 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1191 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1192 * improvement: the system either recovers from stack exhaustion or dies
1193 properly as opposed to leaving the user uncertain of whether the handler
1194 trampled on some random memory next to the stack or having to rely on
1195 --lose-on-corruption (which is still a good idea to use in production
1196 because stack exhaustion can happen in signal handlers which will likely
1198 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1199 1.0.25.37, reported by Harald Hanche-Olsen)
1200 * bug fix: work around signal delivery bug in darwin (regression from
1201 1.0.25.44, reported by Sidney Markowitz)
1202 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1204 changes in sbcl-1.0.26 relative to 1.0.25:
1205 * incompatible change: an interruption (be it a function passed to
1206 INTERRUPT-THREAD or a timer function) runs in an environment where
1207 interrupts can be enabled. The interruption can use
1208 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1209 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1210 potentially running out of stack. Keep in mind that in the absence
1211 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1212 acquiring a lock can enable interrupts.
1213 * incompatible change: GC-OFF and GC-ON are removed, as they were
1214 always unsafe. Use WITHOUT-GCING instead.
1215 * new feature: runtime option --disable-ldb
1216 * new feature: runtime option --lose-on-corruption to die at the
1217 slightest hint of possibly non-recoverable errors: running out of
1218 memory, stack, alien stack, binding stack, encountering a memory
1219 fault, etc. In the absence of --lose-on-corruption a warning is
1221 * enhancement: detect binding stack exhaustion
1222 * enhancement: detect alien stack exhaustion on x86/x86-64
1223 * improvement: generally more stable and reliable interrupt handling
1224 * improvement: there is a per thread interruption queue,
1225 interruptions are executed in order of arrival
1226 * improvement: a repeating timer reschedules itself when the it has
1227 finished, but expiration times are spaced equally. If an
1228 expiration time is in the past it will trigger after a short grace
1229 period that may give a chance to other things to run.
1230 * optimization: slightly faster gc on multithreaded builds
1231 * optimization: faster WITHOUT-GCING
1232 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1233 important locks so that the debugger/handler doesn't produce
1234 recursive errors or deadlock.
1235 * bug fix: real-time signals are not used anymore, so no more
1236 hanging when the system wide real-time signal queue gets full.
1237 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1239 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1240 * bug fix: fix random memory faults related to interrupts on alpha
1241 * bug fix: fix random memory faults related to interrupts on sparc
1242 * bug fix: fix deadlocks related to starting threads
1243 * bug fix: fix deadlines on locks on futex platforms
1244 * bug fix: restore errno in signal handlers
1245 * bug fix: fix deadlocks related to hash tables
1246 * bug fix: fix deadlocks in pcl
1248 changes in sbcl-1.0.25 relative to 1.0.24:
1249 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1250 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1251 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1252 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1253 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1254 better name and does not return values so stale on multiprocessor systems.
1255 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1257 * improvement: unithread builds keep track of MUTEX-VALUE.
1258 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1259 stream anymore making it thread safe to have a concurrent reader and
1260 a writer, for instance, in a pipe.
1261 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1262 arguments, making compiler-macros for SETF-functions able to inspect
1263 their constant arguments.
1264 * improvement: COMPILE-FILE reports times with millisecond accuracy
1265 (thanks to Luis Oliveira)
1266 * optimization: CHAR-CODE type derivation has been improved, making
1267 TYPEP elimination on subtypes of CHARACTER work better. (reported
1268 by Tobias Rittweiler, patch by Paul Khuong)
1269 * bug fix: setting alien structure fields of type struct by value now
1270 computes the right offset for the memory copy.
1271 * bug fix: compilation problem involving inlined calls to aliens with
1272 result type VOID. (reported by Ken Olum)
1273 * bug fix: #235a; sequential inline expasion in different policies no
1274 longer reuses the functional from the previous expansion site.
1275 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1276 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1277 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1278 cause an implied type redefinition. Regression from 1.0.21.29.
1279 * bug fix: sign-extension of small signed return values now works with C
1280 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1281 * improvements to the Windows port:
1282 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1283 Westfold, thanks to Rudi Schlatte)
1285 changes in sbcl-1.0.24 relative to 1.0.23:
1286 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1287 vector of a multidimensional SIMPLE-ARRAY.
1288 * new feature: the system now signals a continuable error if standard
1289 readtable modification is attempted. (thanks to Tobias Rittweiler)
1290 * new feature: DIRECTORY has been extended with a non-standard keyword
1291 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1292 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1293 has been robustified and documented better. (thanks to Robert Goldman)
1294 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1295 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1296 * tradeoff: constant FORMAT control strings are now compiled unless
1297 SPACE > SPEED (previously only when SPEED > SPACE.)
1298 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1300 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1302 * bug fix: lexical type declarations are now correctly reported by
1303 SB-CLTL2. (reported by Larry D'Anna)
1304 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1305 using UTF-8 as external format. (thanks to Luis Oliveira)
1306 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1307 are signalled correctly. (thanks to Stas Boukarev)
1308 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1309 designator. (thanks to Tobias Rittweiler)
1310 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1311 designator, and returns T instead of the function. (thanks to
1313 * bug fix: direct superclasses of STANDARD-CLASS and
1314 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1315 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1316 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1317 when no class with the named slot yet exists no longer causes a
1318 compile-time style-warning.
1319 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1320 in safe code. (reported by Didier Verna)
1321 * bug fix: #430; nested structure constructors can stack allocate.
1322 * bug fix: on some 64-bit platforms dynamic space size was truncated
1323 to #xffff0000 bytes. (reported by Benjamin Lambert)
1324 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1325 REPL unusable. (reported by Daniel Herring)
1326 * bug fix: return values of READ-SEQUENCE did not take :START into
1327 account on file streams, regressions since 1.0.12.22. (reported by
1328 Thomas Russ, patch by Paul Khuong)
1329 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1330 method specializer used to confuse permuation vector optimization.
1331 * bug fix: system inserted bogus implicit type declarations for local
1332 special variables in DEFMETHOD bodies.
1333 * bug fix: #354; duplicated frames in backtraces due to
1334 non-tail-call-optimized XEPs to functions with return type NIL
1336 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1337 initializes structure object slots according to DEFSTRUCT initforms,
1338 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1339 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1340 (reported by Bruno Haible and Stephen Wilson)
1341 * bug fix: #395; fill-pointer output streams used now support
1342 element-type BASE-CHAR as well.
1343 * bug fix: compiler error when attempting to derive return value of
1344 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1346 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1348 * bug fix: Mac OS X binaries should now be portable between Leopard
1351 changes in sbcl-1.0.23 relative to 1.0.22:
1352 * enhancement: when disassembling method functions, disassembly
1353 for the associated fast function is also produced.
1354 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1356 * optimization: printing with *PRINT-PRETTY* true is now more
1357 efficient as long as the object being printed doesn't require
1358 special handling by the pretty printer.
1359 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1360 now interact correctly with type declarations.
1361 * partial bug fix: PCL detects infinite recursion during wrapper
1362 validation. (thanks to Attila Lendvai)
1363 * bug fix: #426; nested function calls are inlined properly.
1364 Previously if FOO was an inline function, in calls of the form
1365 (FOO (FOO ...)) the outer call was not inlined.
1366 * bug fix: long long arguments passed in registers to alien
1367 functions on PowerPC Linux and NetBSD are now handled correctly
1368 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1370 changes in sbcl-1.0.22 relative to 1.0.21:
1371 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1372 for the shared object in the current directory, but passes the native
1373 namestring of the designated pathname to the operation system's shared
1374 object loading function as-it.
1375 * minor incompatible change: --disable-debugger toplevel option now takes
1376 effect before processing of initialization files and --eval or --load
1378 * new feature: new commandline argument: --script, which supports
1379 shebang lines. See documentation for details. (based on work by
1381 * new feature: SAVE-LISP-AND-DIE can save current values of
1382 --dynamic-space-size and --control-stack-size in the executable core,
1383 causing it to skip normal runtime option processing. See documentation
1384 for details. (thanks to Zach Beane)
1385 * enhancement: inoccous calls to EVAL or generic functions dispatching
1386 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1387 * enhancement: the system no longer resignals errors from --load and
1388 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1389 associated with the original error to be lost. (thanks to Ariel
1391 * enhancement: :DONT-SAVE keyword argument has been added to
1392 LOAD-SHARED-OBJECT for controlling interaction with
1393 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1394 the effects of an earlier LOAD-SHARED-OBJECT call.
1395 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1396 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1397 provided. (reported by Cedric St-Jean)
1398 * bug fix: circularity handling in the reader did not treat raw
1399 structure slots correctly. (reported by Cedric St-Jean)
1400 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1401 file descriptors when there were none.
1402 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1403 was broken. (reporteed by Willem Broekema)
1404 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1405 pathnames without a directory.
1406 * bug fix: COMPILE-FILE did not warn about undefined variable
1407 references at toplevel, and LOAD of the resulting fasl did
1408 not signal an error.
1409 * bug fix: functions with non-required arguments used to end up with
1410 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1411 * bug fix: redefining a function with non-required arguments didn't
1412 update the system's knowledge about its call signature properly.
1413 * bug fix: fixed #431; incompatible alien record type redefinitions
1414 are detected and handled. (reported by Neil Haven)
1415 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1416 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1418 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1419 after alien stack frames.
1420 * bug fix: strings passed to mk{s,d}temp lacked null termination
1422 changes in sbcl-1.0.21 relative to 1.0.20:
1423 * new feature: the compiler is able to track the effective type of a
1424 generic function across method addition and removal.
1425 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1426 appropriately typed structure slots without locking.
1427 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1428 information like those gathered by TIME using a programming-friendly
1430 * new feature: TIME reports time taken even if the form performs a
1431 non-local transfer of control.
1432 * enhancement: reduced conservativism on GENCGC platforms: on
1433 average 45% less pages pinned (measured from SBCL self build).
1434 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1435 mutate constant symbols or violate declaimed type of the symbol.
1436 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1437 sleeping on the semaphore in heavily contested semaphores.
1438 * bug fix: semaphores and condition variables were not interrupt
1440 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1441 owned by other threads anymore.
1442 * bug fix: FIND on lists called KEY outside the specified
1443 subsequence. (reported by budden)
1444 * bug fix: LOG doesn't use single-float intermediate results when
1445 given mixed integer and double-float arguments, leading to better
1446 precision. (reported by Bob Felts)
1447 * bug fix: LOG with base zero returned values of inconsistent type.
1449 changes in sbcl-1.0.20 relative to 1.0.19:
1450 * minor incompatible change: OPTIMIZE qualities
1451 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1452 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1453 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1454 * documentation: some slot access efficiency guidelines have been
1455 added to the user manual.
1456 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1457 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1458 as ASSOC and MEMEBER.
1459 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1460 to more efficient EQ-comparison versions more often.
1461 * optimization: enhanced derivation of DOLIST iteration variable type
1463 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1465 * optimization: runtime lookup of function definitions can be
1466 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1467 * optimization: compiler is able to derive the return type of
1468 (AREF (THE STRING X) Y) as being CHARACTER.
1469 * optimization: CLRHASH on empty hash-tables no longer does pointless
1470 work. (thanks to Alec Berryman)
1471 * optimization: REPLACE deftransforms don't punt when :START1 or
1473 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1474 no longer emits a code deletion note. (reported by Andrew
1476 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1477 functions with an odd number of &OPTIONAL arguments, a &REST
1478 argument, and one or more &KEY arguments at the call site.
1479 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1480 arguments appeared at call sites as well.
1481 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1482 READ-LINE &co can no longer read from them afterwards. (reported
1484 * bug fix: fixed #427: unused local aliens no longer cause compiler
1485 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1487 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1488 alien-stack leakage. (reported by Andy Hefner)
1489 * bug fix: PROGV signals an error when an attempt to violate declared
1490 type of a variable or bind a constant is made.
1491 * bug fix: SET signals an error when an attempt to violate declared
1492 type of a variable is made.
1493 * bug fix: restart computation during the execution of a restart
1494 test function no longer causes infinite recursion. (reported by
1496 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1497 signals an error. (thanks to Pierre Mai)
1498 * bug fix: EXPORT left symbol unexported in conflict situations.
1499 (thanks to Michael Weber)
1500 * bug fix: correctly handle name conflicts involving CL:NIL.
1501 (thanks to Michael Weber)
1502 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1503 conflicts arising from USEing package with conflicting symbols
1504 correctly. (thanks to Michael Weber)
1506 changes in sbcl-1.0.19 relative to 1.0.18:
1507 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1508 warnings that go otherwise unhandled will be muffled if they are
1509 of the type that's the value of this variable.
1510 * optimization: stack allocation is slightly more efficient on x86
1512 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1513 where a raw slot always is initialized using the initform whose
1514 type is not know sufficiently well a compile-time are now compiled
1515 correctly. (reported by John Morrison)
1516 * bug fix: compiler no longer makes erronous assumptions in the
1517 presence of non-foldable SATISFIES types.
1518 * bug fix: stack analysis missed cleanups of dynamic-extent
1519 arguments in non-let-converted calls to local functions.
1520 * improvements to the Windows port:
1521 ** adjusted address spaces for building on both Win32 and
1522 Win64. (thanks for John Connors)
1523 * fixed some bugs revealed by Paul Dietz' test suite:
1524 ** interval arithmetic during type derivation used inexact integer
1525 to single-float coercions.
1526 ** arithmetic operations involving large integers and single
1527 floats give the same results in compiled and interpreted code.
1528 ** deriving the result type of COERCE no longer signals an error
1529 if the derived type of the second argument is a MEMBER type
1530 containing invalid type specifiers.
1531 ** ADJOIN with constant NIL as second argument works correctly.
1532 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1534 changes in sbcl-1.0.18 relative to 1.0.17:
1535 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1536 profiles only the current thread.
1537 * minor incompatible change: changes to SYMBOL-VALUE of constants
1538 defined with DEFCONSTANT now signal an error.
1539 * enhancement: SB-SPROF now has support for wallclock profiling,
1540 and is also able to profile specific threads. REPORT output
1541 has also additional sorting options.
1542 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1544 * optimization: structure allocation has been improved
1545 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1546 ** out of line constructors are ~10% faster.
1547 ** inline constructors are ~15% faster.
1548 ** inline constructors are capable of dynamic extent allocation
1549 (generally on x86 and x86-64, in some cases on other platforms
1551 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1553 * optimization: file compiler is now able to coalesce non-circular
1554 lists, non-base strings, and bit-vectors. Additionally, constants
1555 are never referenced through SYMBOL-VALUE at runtime.
1556 * optimization: code defining methods on PRINT-OBJECT (and other
1557 generic functions in the COMMON-LISP package) now loads faster.
1558 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1560 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1561 fasl is now deleted. (reported by Attila Lendvai)
1562 * bug fix: READ-LINE always returned NIL for the last line in files.
1563 (reported by Yoshinori Tahara)
1564 * bug fix: more accurate disassembly annotations of foreign function
1565 calls. (thanks to Andy Hefner)
1566 * bug fix: trimming non-simple strings and non-string string
1567 designators when the there is nothing to trim works properly.
1568 (thanks to James Knight)
1569 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1570 (thanks to Travis Cross)
1571 * fixed some bugs revealed by Paul Dietz' test suite:
1572 ** NIL is a valid function name (regression at 1.0.13.38)
1573 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1574 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1575 fill pointers properly (regression at 1.0.12.23)
1576 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1577 displacement indices properly (regression at 1.0.12.23)
1579 changes in sbcl-1.0.17 relative to 1.0.16:
1580 * temporary regression: user code can no longer allocate closure
1581 variable storage on stack, due to bug 419 without explicitly
1582 requesting it. Please consult sbcl-devel for advice if you need to
1583 use this feature in the meanwhile.
1584 * new feature: runtime argument --control-stack-size can be used to
1585 adjust thread default control stack size.
1586 * enhancement: improved TIME output
1587 ** all times are reported using the measured accuracy (milliseconds
1588 for real and GC times, microseconds for everything else.)
1589 ** processor cycle counts on x86 and x86-64.
1590 ** interpreted forms are counted for both evaluator modes.
1591 ** number of lambdas converted by the compiler is reported.
1592 ** CPU percentage report (computed from real and total run time.)
1593 ** more comprehensive run time reporting, using a condenced format
1594 ** interperted form, lambda, and page fault counts are omitted
1596 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1598 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1599 * optimization: two argument forms of LAST are upto ~10% faster
1600 in normal SPEED policies.
1601 * optimization: NCONC no longer needs to heap cons its &REST list
1602 in normal SPEED policies.
1603 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1604 to Sidney Markowitz)
1605 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1606 regression since 1.0.9.1. (thanks to Eric Marsden)
1607 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1608 since 1.0.15.36. (thanks to Paul Khuong)
1609 * bug fix: LAST when always returned the whole list when given a bignum
1610 as the second argument.
1611 * bug fix: dynamic extent allocation of nested lists and vectors
1612 could leak to otherwise accessible parts.
1613 * bug fix: invalid optimization of heap-allocated alien variable
1615 * bug fix: fasl header checking is less vulnerable to different
1616 platform word lengths.
1617 * bug fix: more correct assembler syntax for GNU binutils
1618 2.18.50.0.4 support. (thanks to Marijn Schouten)
1619 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1621 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1622 declarations) successfully. (reported by Attila Lendvai)
1624 changes in sbcl-1.0.16 relative to 1.0.15:
1625 * minor incompatible change: revert the changes to sb-posix's error
1626 signaling added in 1.0.14.
1627 * minor incompatible change: change PROBE-FILE back to returning
1628 NIL whenever we can't get a truename, as was the case before 1.0.14.
1629 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1630 inherits from ERROR instead of just CONDITION.
1631 * new feature: SB-INTROSPECT can provide source locations for instances
1632 as well. (thanks to Tobias Rittweiler)
1633 * optimization: binding special variables now generates smaller code
1634 on threaded platforms.
1635 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1636 and cases where no :TEST is given but the compiler can infer that
1637 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1638 * optimization: better LOGNOT on fixnums.
1639 * optimization: modular arithmetic for a particular requested width
1640 is implemented using a tagged representation unless a better
1641 representation is available.
1642 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1643 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1644 for wellformedness and returns a specialized vector. (reported by
1645 Francois-Rene Rideau)
1646 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1647 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1648 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1649 unscheduling timer at the same time as another timer fires.
1650 * bug fix: don't reschedule timers for dead threads.
1651 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1652 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1653 bogus errors if select() was interrupted.
1654 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1656 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1657 * enhancement: cleaner backtraces for interactive interrupts, as
1658 well as other cases where the interesting frames used to be
1659 obscured by interrupt handling frames.
1660 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1661 now supported, and tracing a whole package using (TRACE "FOO") now
1662 traces SETF-functions as well.
1663 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1664 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1665 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1666 * unreadably printed representation of hash-tables now includes
1668 * bug fix: partially fixed #188: type propagation from assignments
1669 is now more efficient.
1670 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1671 'DOUBLE-FLOAT) are not flushable.
1672 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1673 full address of the object, and none of the tag bits.
1674 * bug fix: readably printing hash-tables now respects other printer
1675 control variables. (reported by Cedric St-Jean)
1676 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1677 keyword with MAKE-HASH-TABLE.
1678 * bug fix: export SB-POSIX:MKSTEMP.
1679 * bug fix: SORT was not interrupt safe.
1680 * bug fix: XREF accounts for the last node of each basic-block as
1682 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1683 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1684 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1685 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1686 create obsolete instances in the case of redefinition or
1687 obsoletion of a superclass. (thanks to Andy Hefner)
1688 * bug fix: Support for the Alpha architecture has been revived; it had
1689 suffered somewhat from lack of maintenance since sbcl-1.0.
1690 * improvements to the Windows port:
1691 ** The system detects the codepage to use at startup, instead of
1692 using the value from the saved core. (thanks to Kei Suzuki)
1694 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1695 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1696 (see documentation for details.)
1697 * revived support for OpenBSD (contributed by Josh Elsasser)
1698 * partially fixed bug #108: ROOM no longer suffers from occasional
1699 (AVER (SAP= CURRENT END)) failures.
1700 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1701 bodies no longer cause a WARNING to be signalled. (reported by
1703 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1704 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1705 the bug in TRUNCATE.) (reported by Michael Weber)
1706 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1707 no samples. (reported by Andy Hefner)
1708 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1709 no longer appear as (NIL ...) frames in backtraces.
1710 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1711 is now actually exported from SB-EXT as documented. (reported by
1713 * bug fix: sb-aclrepl now correctly understands how to inspect
1714 single-floats on 64-bit platforms where single-floats are not boxed.
1715 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1716 yet been finalized. (reported by Levente Meszaros)
1717 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1718 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1719 SBCL-specific optimize qualities.
1721 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1722 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1723 an executable in the search path, and does so in the child
1724 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1725 been removed; it can be found in the CVS history, for somebody who
1726 needs that search behavior (see the manual).
1727 * minor incompatible change: compiler policy re. weakening type
1728 checks has changed: now type checks are weakened only if SAFETY < 2
1730 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1731 unparsing of directory pathnames as files. Analogously,
1732 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1733 filename to parse into a directory pathname.
1734 * enhancement: implicit generic function creation now signals a
1735 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1736 users can bind handlers for and muffle around calls to LOAD.
1737 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1738 to be used (using the default stream external format), and allows
1739 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1740 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1741 strings and vectors whose element-type or simplicity is not fully
1742 known at compile-time.
1743 * optimization: STRING-TRIM and related functions no longer allocate
1744 a new string when no trimming needs to be performed. These functions
1745 are also faster than before when the input string has been declared
1747 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1748 * optimization: READ-LINE is significantly faster for files containing
1750 * optimization: non-open coded uses of character comparison operators
1751 (e.g. char=) no longer cons when called with more than one parameter
1752 on platforms supporting dynamic-extent allocation.
1753 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1754 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1755 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1757 * bug fix: some sequence functions elided bounds checking when
1759 * bug fix: too liberal weakening of union-type checks when SPEED >
1761 * bug fix: more bogus fixnum declarations in ROOM implementation
1764 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1765 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1766 :SYNCHRONIZED argument, which makes the hash-table safe for
1767 concurrent accesses (but not iteration.) See also:
1768 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1769 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1770 * optimization: CONCATENATE on strings is an order of magnitude faster
1771 in code compiled with (> SPEED SPACE).
1772 * optimization: SUBSEQ is ~50% faster on lists.
1773 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1774 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1775 END is smaller then START.
1776 * bug fix: SB-PROFILE will no longer report extra consing for nested
1777 calls to profiled functions.
1778 * bug fix: ROOM implementation had bogus fixnum declarations which
1779 could cause type-errors when calling ROOM on large images.
1780 * bug fix: if file compilation is aborted, the partial fasl is now
1781 deleted, and COMPILE-FILE returns NIL as the primary value.
1782 * bug fix: number of thread safety issues relating to SBCL's internal
1783 hash-table usage have been fixed.
1784 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1785 be returned from its body when the values were being returned
1786 using unknown-values return convection and the W-P-O was wrapped
1787 inside an UNWIND-PROTECT.
1788 * bug fix: sb-posix should now compile again under Windows, enabling
1789 slime to work again.
1791 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1792 * incompatible change: hash-table accessor functions are no longer
1793 automatically protected by locks. Concurrent accesses on the same hash-table
1794 from multiple threads can give inconsistent results or even corrupt the
1795 hash-table completely. Multi-threaded applications should do their own
1796 locking at the correct granularity. In the current implementation it is
1797 still safe to have multiple readers access the same table, but it's not
1798 guaranteed that this property will be maintained in future releases.
1799 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1800 and will signal an error at runtime.
1801 * enhancement: SB-THREAD package now exports a semaphore interface.
1802 * enhancement: CONS can now stack-allocate on x86 and
1803 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1805 * enhancement: nested lists can now be stack allocated on
1806 platforms providing stack allocation support.
1807 * enhancement: dynamic-extent support has been extended to support
1808 cases where there are multiple possible sources for the stack
1810 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1811 if the mutex is uncontested on Linux.
1812 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1813 as specified by the CLHS. (thanks to Tobias Rittweiler)
1814 * bug fix: NaN comparison now works on x86-64.
1815 * bug fix: CLOSE :ABORT T on a stream with pending output now
1817 * bug fix: instances of non-standard metaclasses using standard
1818 instance structure protocol sometimes missed the slot type checks
1820 * bug fix: known functions can be inlined in high-debug code.
1822 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1823 * minor incompatible change: the MSI installer on Windows no longer
1824 associates .lisp and .fasl files with the installed SBCL.
1825 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1826 on Windows. (thanks to Luis Oliviera)
1827 * new feature: SB-CLTL2 contrib module now implements
1828 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1829 * optimization: scavenging weak pointers is now more efficient,
1830 requiring O(1) instead of O(N) per weak pointer to identify
1831 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1832 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1833 method bodies using constant slot-names when the first argument is
1834 a specializer parameter for the method.
1835 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1836 names, when the class of the instance is a direct instance
1837 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1838 as slow as the constant slot-name case.)
1839 * optimization: member type construction is now O(N) instead
1841 * optimization: UNION and NUNION are now O(N+M) for large
1842 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1844 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1845 now more readable in environments like Slime which display it.
1846 (thanks to Tobias C. Rittweiler)
1847 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1848 was able to infer the correct argument type for the object on which
1849 the CAS operation was being performed.
1850 * bug fix: copy propagation interfered with parallel assignment
1851 semantics in local calls. (reported by Paul Khuong)
1852 * bug fix: the signed modular fixnum shift compiled to wrong code on
1853 x86 and x86-64. (spotted by a slight modification to some of
1856 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1857 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1858 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1859 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1861 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1862 and generic function now print the object identity for anonymous
1863 instances. (thanks to Attila Lendvai)
1864 * enhancement: as an extension to MOP, SBCL now supports SETF of
1865 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1866 (thanks to Attila Lendvai)
1867 * enhancement: sb-cover has an alternate annotation mode which puts
1868 the form annotations at the car of the form, instead of annotating
1869 it completely. The benefit of this mode is that it shows better
1870 which forms were instrumented by the compiler.
1871 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1872 by printer control variables. (reported by Dan Corkill)
1873 * bug fix: system leaked memory when delayed output was performed by
1874 the OS in smaller chunks then expected. (thanks to David Smith)
1875 * bug fix: system leaked memory when file streams were not closed
1877 * bug fix: large objects written to slow streams that were modified
1878 after the write could end up with the modified state written to
1879 the underlying file descriptor.
1880 * bug fix: multiple threads operating in parallel on the same stream
1881 could cause buffer-overflows.
1882 * bug fix: source location information is stored correctly
1883 (broken since 1.0.6). This bug would generally show up as the
1884 Slime debugger highlighting the wrong form when the sldb-show-source
1886 * bug fix: Branch forms are again annotated as branches in the sb-cover
1888 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1889 on x86-64. (reported by Gregory Vanuxem)
1890 * bug fix: EQUALP could return wrong results for structures with raw
1891 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1892 word). (reported by Vjacheslav Fyodorov)
1893 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1896 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1897 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1898 atomic compare-and-swap operations on threaded platforms.
1899 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1900 allows assigning a global minimum value to optimization qualities
1901 (overriding proclamations and declarations).
1902 * enhancement: closed over variables can be stack-allocated on x86
1904 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1906 * optimization: slot definition lookup is now O(1). This speeds up
1907 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1908 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1909 * optimization: ASSOC and MEMBER can now be open-coded for all
1910 combinations of keyword arguments when second argument is constant
1911 and SPEED >= SPACE. In other cases a specialized version is
1913 * bug fix: using obsoleted structure instances with TYPEP and
1914 generic functions now signals a sensible error.
1915 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1916 (reported by Kristoffer Kvello)
1917 * bug fix: backtrace construction is now more careful when making
1918 lisp-objects from pointers on the stack, to avoid creating bogus
1919 objects that can be seen by the GC.
1920 * bug fix: defaulting of values in contexts expecting more than 7
1921 variables now works on x86-64. (reported by Christopher Laux)
1922 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1924 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1925 as the property-list of a symbol.
1926 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1927 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1928 situations requested, are once again file-compileable. (reported
1931 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1932 * MOP improvement: support for user-defined subclasses of
1933 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1934 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1935 the expansion of DEFMETHOD, is responsible for generating a form
1936 which creates a list of specializers when evaluated. Additional
1937 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1938 debugging and introspective support.
1939 * minor incompatible change: the (unsupported) spinlock interface
1940 has changed: free spinlock now has the value NIL, and a held spinlock
1941 has the owning thread as its value.
1942 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1943 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1945 * enhancement: name of a socket-stream is now "a socket" instead of
1946 "a constant string".
1947 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1948 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1949 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1950 for generic functions. (Thanks to Tobias C. Rittweiler)
1951 * optimization: bignum printing speed has been improved by 20-40%
1952 (depending on the bignum size.)
1953 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1955 * bug fix: the cache used by the CLOS to store precomputed effective
1956 methods, slot offsets, and constant return values is now thread and
1958 * bug fix: generic function dispatch function updating is now thread
1959 and interrupt safe (in the sense that the known issues have been
1961 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1962 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1963 * bug fix: asdf systems with dependencies to the SB-POSIX or
1964 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1965 * bug fix: interrupt safety of applicable method computation has been
1968 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1969 * new contrib: sb-cover, an experimental code coverage tool, is included
1970 as a contrib module.
1971 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1972 significantly faster.
1973 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1974 produce more efficient code on x86-64 if the compiler can determine
1975 that (+ INDEX <constant>) does not require a bounds check and FOO
1976 has an element type at least 8 bits wide.
1977 * enhancement: a new, experimental synchronous timeout facility is
1978 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1979 * enhancement: when a symbol name conflict error arises, the
1980 conflicting symbols are always printed with a package prefix.
1981 (thanks to Kevin Reid)
1982 * enhancement: stepping is now once again supported on the SPARC and
1983 MIPS platforms. (It is also now more likely to work on CheneyGC
1985 * enhancement: sb-sprof can now also track and report accurate call
1987 * bug fixes: the treatment of non-standard subclasses of
1988 SB-MOP:SPECIALIZER is more correct.
1989 * incompatible change: PURIFY no longer copies the data from the
1990 dynamic space into the static and read-only spaces on platforms
1991 that use the generational garbage collector
1992 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1994 * bug fix: GC race condition occasionally resulting in crashes with
1995 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1997 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1999 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2000 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2001 * bug fix: an asynchronous interrupt could previously leave the
2002 system running with GC inhibited.
2003 * bug fix: a DECLARE form evaluated at top-level now causes an error
2004 rather than silently (or verbosely) returning NIL.
2005 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2006 result in a error being signalled due to source form lookup errors.
2007 (reported by Peter Graves)
2009 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2010 * incompatible change: removed writer methods for host-ent-name,
2011 host-ent-addresses -- changing the values did not update the DNS
2013 * minor incompatible change: changed experimental JOIN-THREAD interface
2014 * documentation: the manual now lists reader and writer methods
2015 in class slot documentation sections. (thanks to Richard M Kreuter)
2016 * documentation: unwinding from asyncronous events has been
2017 documented as unsafe.
2018 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2019 in multithreaded application code.
2020 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2021 platforms. (thanks to James Anderson for the optimization hint)
2022 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2024 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2025 variants no longer cons.
2026 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2027 their NOT- variants no longer cons.
2028 * optimization: EQUAL hash tables no longer use SXHASH for objects
2029 of all data types, but instead use an EQL hash for types for which
2030 EQUAL is the same as EQL.
2031 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2032 are significantly faster.
2033 * optimization: new STRING-OUTPUT-STREAM implementation is much
2034 faster for large outputs and conses 30% less on average.
2035 * enhancement: XREF information is now collected for references made
2036 to global variables using SYMBOL-VALUE and a constant argument.
2037 * enhancement: SIGINT now causes a specific condition
2038 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2039 * bug fix: FILE-POSITION used to signal an error in some cases where
2040 ANSI requires it to return NIL.
2041 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2042 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2043 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2045 * bug fix: bad type declaration in the CLOS implementation has
2046 been fixed. (reported by James Anderson)
2047 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2048 (thanks to Lutz Euler)
2049 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2050 required by the CLHS. (reported by Samium Gromoff)
2051 * bug fix: dead unbound variable references now signal an error.
2052 (reported by Marco Monteiro)
2053 * bug fix: / with an unused value was being deleted in safe code.
2054 (thanks to Marco Monteiro and Kevin Reid)
2055 * bug fix: number of characters that can be written onto a single
2056 line in a file is unlimited.
2057 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2058 been fixed by inhibiting interrupts for when GC is disabled.
2059 * bug fix: some interrupt safety issues with GETHASH, (SETF
2060 GETHASH), CLRHASH and REMHASH have been fixed.
2061 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2062 specifier no longer causes infinite recursion.
2063 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2064 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2065 * bug fix: an &environment argument with the correct variable information
2066 is passed to macros that are expanded during byte compilation.
2067 (reported by Samium Gromoff)
2068 * bug fix: a logic error was causing the hash function for bignums to
2069 have excessive amounts of collisions. (reported by Faré Rideau)
2070 * bug fix: modifying the contents of an array could change the return
2071 value of SXHASH on that array, which is only allowed for strings
2072 and bit vectors. (bug introduced in 0.9.16)
2073 * improvement: the x86-64/darwin port now passes all tests (except
2074 for the debugger tests) but should still be considered
2075 experimental until this is fixed.
2076 * improvement: a style-warning is signaled for CASE (etc) clauses with
2077 duplicate keys. (thanks to Kevin Reid)
2078 * improvement: macos/x86 and macos/x86-64 now use mach exception
2079 handlers for dealing with illegal instructions (for trapping and
2080 error handling) and memory protection violations (for GC).
2082 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2083 * new platform: experimental support for x86-64/darwin (MacOS).
2084 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2085 and getnameinfo sockets functions are used instead of gethostbyaddr
2086 and gethostbyname, on platforms where the newer functions are available.
2087 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2089 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2090 don't print the startup banner, but behave as if --noinform was passed
2091 as a command line argument. (thanks to Kevin Reid)
2092 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2093 * optimization: code using alien values with undeclared types is much faster.
2094 * optimization: the compiler is now able to open code SEARCH in more cases.
2095 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2096 * bug fix: using standardized COMMON-LISP special variables as loop
2097 variables no longer signals bogus package lock violations. (reported
2099 * bug fix: declaring local loop variables to be of a range-limited type
2100 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2101 (reported by Andras Simon)
2102 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2103 bugs remain on x86-64.)
2104 * bug fix: the #= and ## reader macros now interact reasonably with
2105 funcallable instances.
2106 * bug fix: type-checks for function arguments were compiled using the
2107 compiler policy settings of the wrong lexical environment (in 1.0.2
2109 * bug fix: SHADOW accepts characters as string designators, as required
2110 by the spec (thanks to Eric Marsden)
2111 * bug fix: fixed GC safety issues when foreign functions are called with
2112 non-base strings as arguments
2113 * bug fix: more consistent error output for fatal-compiler-warnings, like
2115 * bug fix: functions with proper names were showing up as NIL in
2116 backtraces (reported by Edi Weitz, regression in 1.0.2)
2118 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2119 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2120 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2121 produce more efficient code on the x86 if the compiler can determine
2122 that (+ INDEX <constant>) does not require a bounds check and FOO
2123 has an element type at least 8 bits wide.
2124 * bug fix: references to undefined variables are handled the same way
2125 in toplevel forms as in the normal compiler
2126 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2128 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2129 (thanks to Jon Buller)
2130 * improvement: faster compilation times for complex functions
2131 * improvement: added readlink support to SB-POSIX (thanks to Richard
2134 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2135 * improvement: experimental support for mach exception handling on
2136 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2138 * improvement: support for GBK external format.
2139 (thanks to Chun Tian (binghe))
2140 * improvement: the debugger now displays variables that have been closed
2141 over, in code compiled with (DEBUG 2) or higher
2142 * improvement: support for executable cores on NetBSD (thanks to
2144 * new feature: added a RESTART-FRAME debugger command
2145 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2146 be used to provide an implementation for FILE-POSITION on Gray streams
2147 (thanks to Eric Marsden)
2148 * new feature: add syslog, openlog and closelog support to SB-POSIX
2149 (thanks to Richard Kreuter)
2150 * optimization: the function call overhead in code compiled with
2151 a high DEBUG optimization setting is significantly
2152 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2153 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2154 (thanks to Tony Martinez)
2155 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2156 evaluated once (reported by Kevin Reid)
2157 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2158 works again (thanks to Kilian Sprotte)
2159 * bug fix: an error is signaled for tagbodies with duplicate tags
2160 (thanks to Stephen Wilson)
2161 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2162 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2163 stack frames from alien callbacks.
2164 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2165 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2166 65k pages (thanks to David Woodhouse)
2167 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2169 changes in sbcl-1.0.1 relative to sbcl-1.0:
2170 * new platform: FreeBSD/x86-64, including support for threading.
2171 * new feature: the compiler stores cross-referencing information
2172 about function calls (who-calls), macroexpansion (who-macroexpands)
2173 and special variables (who-binds, who-sets, who-references) for code
2174 compiled with (< SPACE 3). This information is available through the
2175 sb-introspect contrib.
2176 * new feature: users may subclass SEQUENCE, and have instances of
2177 these classes interoperate with standard Common Lisp functions if
2178 a number of methods are defined. (This feature is experimental
2179 and the interface subject to change based on feedback from SBCL
2180 users and the general community)
2181 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2182 x86/x86-64, rather than the previous fixed depth of 8
2183 * improvement: another pthread back-end of mutex "pthread-futex".
2184 * bug fix: non-ascii command-line arguments are processed correctly
2185 (thanks to Yaroslav Kavenchuk)
2186 * bug fix: non-required arguments were not passed correctly when a method
2187 defined using DEFMETHOD was called from a mop-generated method using
2188 CALL-NEXT-METHOD (reported by Pascal Costanza)
2189 * bug fix: recursion is now permitted in accessors through
2190 SLOT-UNBOUND. (reported by Pascal Costanza)
2191 * bug fix: an error was signaled at startup if the HOME environment
2192 variable was defined, but had an empty value (reported by Peter Van Eynde)
2193 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2194 signal a PROGRAM-ERROR, not a BUG.
2195 * bug fix: SB-POSIX:READDIR works when built with large file support.
2196 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2198 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2199 for better automatic indentation support. (thanks to Matt Pillsbury)
2200 * optimization: loading generic functions no longer takes O(n^2) time,
2201 proportional to the amount of methods in the generic function
2202 (reported by Todd Sabin and Jeremy Brown)
2203 * optimization: the FIND and POSITION family of sequence functions
2204 are significantly faster on arrays whose element types have been
2206 * improvements to the Windows port:
2207 ** Intermittent heap corruption problems have been fixed. (thanks
2208 to Alastair Bridgewater)
2209 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2211 ** Lisp is able to unwind foreign exception frames from alien
2212 callbacks. (thanks to Alastair Bridgewater)
2214 changes in sbcl-1.0 relative to sbcl-0.9.18:
2215 * improvement: experimental support for threading on FreeBSD/x86.
2216 (thanks to NIIMI Satoshi)
2217 * improvement: runtime option --dynamic-space-size can be used
2218 to set the size of the dynamic space reserved on startup.
2219 * improvement: floating point modes in effect are now saved in
2220 core, and restored on startup.
2221 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2222 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2223 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2224 threads are not running after *SAVE-HOOKS* have run.
2225 * improvement: writes to CLOS instance slots are type-checked in code
2226 compiled with (SAFETY 3)
2227 * improvement: floating-point exception handling on FreeBSD (thanks to
2229 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2230 (thanks to Zach Beane)
2231 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2233 * improvement: added support for the Shift-JIS external format.
2234 (contributed by NIIMI Satoshi)
2235 * improvement: callbacks are supported on Linux/PPC. (thanks to
2237 * bug fix: compiler bug triggered by a (non-standard) VALUES
2238 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2239 * bug fix: file compiler no longer confuses validated and already
2240 dumped structurres. (reported by Kaersten Poeck)
2241 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2242 fill-pointer signals a type-error as required. (thanks to
2244 * bug fix: disassemly of funcallable instances works.
2245 * bug fix: single stepping on PPC.
2246 * bug fix: fix thread-safety problems in the type system (generally
2247 manifesting as nonsensical errors like "STRING is a bad type specifier
2248 for sequences" or "The value 1 is not of type FIXNUM")
2249 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2250 (reported by Josip Gracin)
2251 * bug fix: an error is signaled for attempts to displace arrays with
2252 incompatible element types (thanks to Mario Mommer)
2253 * bug fix: more correct handling of wide characters in debug info
2254 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2255 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2256 and don't cause extra consing
2257 * optimization: MAP and MAP-INTO are significantly faster on vectors
2258 whose elements types have been declared.
2259 * Improvements to SB-SPROF:
2260 ** Support for allocation profiling
2261 ** Reduced profiling overhead, especially for long profiling runs
2262 * Improvements to the Windows port:
2263 ** floating point exceptions are now reported correctly.
2264 ** stack exhaustion detection works partially.
2265 ** more accurate GET-INTERNAL-REAL-TIME.
2266 ** better RUN-PROGRAM behaviour in case of errors in the child
2268 ** PROBE-FILE now simplifies pathnames correctly.
2269 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2270 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2271 1st 1970 (although time timezone data will be unreliable).
2272 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2274 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2275 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2276 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2278 * bug fix: two potential GC deadlocks affecting threaded builds.
2279 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2280 returns T (reported by Anton Kazennikov)
2281 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2282 with non-variable places
2283 * bug fix: remove a race condition in the setting of
2284 funcallable-instance functions, this should make threaded CLOS
2285 code more stable against memory faults.
2286 * bug fix: corruption of specials when unbinding is interrupted by an
2287 asynchronous unwind (reported by Hannu Koivisto)
2288 * improvement: the debugger will now also display local variables that
2289 are only used once, for code compiled with a DEBUG optimization quality
2292 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2293 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2294 * incompatible change: External-format support for FFI calls. The
2295 SB-ALIEN:C-STRING no longer implies an ASCII
2296 external-format. Instead the string is subject to external-format
2297 conversion. Additionally return values of type SB-ALIEN:C-STRING
2298 are by default of type (SIMPLE-ARRAY CHARACTER), not
2299 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2300 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2301 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2302 * incompatible change: SB-EXT package no longer contains the
2303 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2304 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2306 * incompatible change: the single-stepper is no longer available
2307 on Alpha, Mips and Sparc platforms.
2308 * minor incompatible change: the direct superclasses of
2309 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2310 not (STANDARD-OBJECT FUNCTION). This makes the
2311 class-precedence-lists of GENERIC-FUNCTION and
2312 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2314 * minor incompatible change: the default stream external format on
2315 non-unicode SBCL is no longer detected from the locale, but is always
2317 * new feature: Add a version of evaluator that uses an interpreter instead
2318 of the compiler. EVAL still uses the compiler by default, to switch it
2319 to use the interpreter, set the value of the variable
2320 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2321 * minor incompatible change: the single-stepper REPL has been merged
2322 with the normal debugger (see the "Stepping" heading of the debugger help
2323 for more details). The debugger command STEP will no longer switch
2324 to the single-stepper REPL.
2325 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2326 for a type now works.
2327 * bug fix: loading of default sysinit file works. (thanks to Leonid
2329 * bug fix: better detection of circularities in the file-compiler.
2330 (reported by Marco Monteiro)
2331 * bug fix: the CL pathname functions now work with files that have
2332 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2333 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2334 systems with Unix98 pty semantics.
2335 * bug fix: ASDF-INSTALL will now work with bsd tar.
2336 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2338 * bug fix: timers expiring in dead threads no longer cause a
2339 type-error (reported by Paul "Nonny Mouse").
2340 * bug fix: thanks to more lightweight single-stepper instrumentation,
2341 code compiled with (DEBUG 3) will compile and execute significantly faster,
2342 and will have more accurate type-inferencing than before
2343 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2344 whose bindings are modified
2345 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2346 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2347 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2348 CL:SOFTWARE-VERSION with proper version
2350 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2351 * feature: implemented the READER-METHOD-CLASS and
2352 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2353 as specified by AMOP.
2354 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2356 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2357 (thanks to Lutz Euler)
2358 * optimization: hashing of general arrays and vectors has been
2359 improved. (reported by Any Fingerhut)
2360 * enhancement: SB-INTROSPECT is now able to find definitions of
2361 profiled functions. (thanks to Troels Henriksen)
2362 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2363 as well, allowing compiler-macros for SETF-functions to expand.
2364 * enhancement: step-instrumentation no longer wraps known
2365 single-value functions with multiple-value context, allowing
2366 better type inference.
2367 * fixed bug #337: use of MAKE-METHOD in method combination now works
2368 even in the presence of user-defined method classes. (reported by
2369 Bruno Haible and Pascal Costanza)
2370 * fixed bug #339(c): if there are applicable methods not part of any
2371 long-form method-combination group, call INVALID-METHOD-ERROR.
2372 (reported by Bruno Haible)
2373 * fixed bug #361: the :FUNCTION initarg in the protocol for
2374 initialization of methods can now be used to override
2375 internally-produced optimized functions. (reported by Bruno
2377 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2378 system-provided lambda expression no longer cause warnings about
2379 unbound #:|pv-table| symbols.
2380 * bug fix: improved the handling of type declarations and the
2381 detection of violations for keyword arguments with non-constant
2383 * bug fix: potentially erronous calls to PATHNAME and
2384 MERGE-PATHNAMES were being flushed in some cases.
2385 (reported by Richard Kreuter)
2386 * bug fix: compiled calls to TYPEP were mishandling obsolete
2387 instances. (reported by James Bielman and Attila Lendvai)
2388 * bug fix: format strings with ~> without matching ~< no longer
2389 trigger an AVER, but signal an understandable error instead.
2390 (reported by Antonio Martinez)
2391 * bug fix: specifying an output-file without a pathname-type for
2392 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2393 of input-file instead of "fasl". (reported by Robert Dodier)
2394 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2395 (reported by James Y Knight).
2396 * bug fix: compiler-macros-function did not consider the environment
2397 argument for shadowing by local functions.
2398 * bug fix: compiler-macros expansion was inhibited by local INLINE
2400 * bug fix: inline expansions of known functions were subject to
2401 step-instrumentation in high debug policies, leading to problems
2402 with type-inference.
2403 * bug fix: compiler failed to differentiate between different CONS
2404 types in some cases.
2405 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2406 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2407 * bug fix: #368: incorrect use of expressed vs. upgraded array
2409 * bug fix: #306a: more precise unions of array types.
2410 * thread-safety improvements:
2411 ** CONDITION-WAIT could return early on Linux, if the thread was
2412 interrupted and subsequently continued with SIGCONT.
2413 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2415 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2416 * added support for the ucs-2 external format. (contributed by Ivan
2418 * minor incompatible change: pretty printing of objects of type
2419 (cons symbol) is, in the default pprint-dispatch-table, now
2420 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2422 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2423 called later in a class's lifetime, possibly as late as when the
2424 first instance of the class is created. Previously,
2425 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2426 class became finalizeable.
2427 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2428 for multibyte external-format streams. (thanks to "vbzoli")
2429 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2430 with :ALLOCATION :CLASS inherited from superclasses of the
2432 * fixed bug: anonymous classes can now be created using the :NAME
2433 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2434 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2435 * fixed bug: core-files saved with :EXECUTABLE T can again be
2436 executed when SBCL_HOME isn't set. (reported by James Knight)
2437 * fixed bug: toplevel LOCALLY forms with declarations could
2438 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2439 * fixed bug: printing from several different threads using different
2440 values of *print-case* could cause invalid output, due to
2441 some internal special variables of the printer not being bound
2442 thread-locally (reported by Max Mikhanosha)
2443 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2444 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2445 (reported by Pascal Costanza)
2446 * fixed bug: FINALIZE-INHERITANCE is called from
2447 REINITIALIZE-INSTANCE on classes when the class has previously
2448 been finalized, as required by AMOP.
2449 * minor code generation optimizations:
2450 ** better register allocation in CLOS dispatching functions
2451 ** overflow detection when coercing signed bytes to fixnums on x86-64
2452 ** is now implemented with one IMUL instruction instead of three shifts
2453 ** more efficient bit-vector access on x86 and x86-64
2454 ** more efficient access to raw structure slots on x86 and x86-64
2455 * fixed some bugs revealed by Paul Dietz' test suite:
2456 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2457 return its argument.
2459 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2460 * feature: thread support on Solaris/x86, and experimental thread support
2462 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2464 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2465 default method for SLOT-UNBOUND.
2466 * minor incompatible change: prevent the user from specializing the
2467 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2468 somewhat counter to the intent of the protocol, I (CSR) think, and
2469 additionally it just doesn't work in SBCL as currently
2470 implemented, thanks to optimizations (that are always valid for
2471 the other three SLOT-VALUEish functions, but not for the setter).
2472 * minor incompatible change: the :SB-LDB feature is now enabled by
2473 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2474 the low-level debugger.
2475 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2476 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2477 down to an SB-SYS:FD-STREAM, allowing direct communication in
2478 more cases. Temporary files and pipes are still used as a fallback
2480 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2481 on the non-reentrant C functions localtime(3) and gmtime(3).
2482 * bug fix: global optimization policy was not visible in LOCALLY and
2484 * bug fix: class objects can be used as specializers in methods.
2485 (reported by Pascal Costanza)
2486 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2487 with a type error. (reported by blitz_ on #lisp)
2488 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2489 failed with a type error. (reported by Pascal Bourguignon)
2490 * bug fix: merging pathnames against defaults with :DIRECTORY
2491 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2492 (reported by James Y Knight)
2493 * bug fix: saving large (>2GB) cores on x86-64 now works
2494 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2495 constant index and a (simple-array (signed-byte 32)) array
2496 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2497 error (patch by Robert J. Macomber)
2498 * feature: TIME now displays the amount of run-time spent in GC
2499 * bug fix: The debugger now does a better job of respecting
2500 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2501 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2502 workaround for bug 403.)
2503 * bug fix: floating point exception handling now works on FreeBSD
2504 (thanks to NIIMI Satoshi)
2505 * fixed some bugs revealed by Paul Dietz' test suite:
2506 ** MISC.641: LET-conversion were not supposed to work in late
2508 * improvements to the Win32/x86 port:
2509 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2510 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2512 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2513 * new feature: source path information is generated for macro-expansion
2514 errors for use in IDE's like Slime (thanks to Helmut Eller)
2515 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2516 * bug fix: compiler does not loop forever on an invalid type in
2518 * improvement: compilation of most CLOS applications is significantly
2520 * optimization: added a limited bytecode compiler for simple toplevel
2521 forms, speeding up compilation and FASL loading
2522 * bug fix: the statistical profiler now properly distinguishes anonymous
2525 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2526 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2527 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2528 into subclasses of the finalized class. Now user calls to
2529 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2530 system return before any subclasses are finalized.
2531 * minor incompatible change: The reader no longer ignores errors
2532 regarding non-existent packages in #+ and #- feature tests.
2533 * new feature: command line options --no-sysinit, --no-userinit to
2534 inhibit loading the corresponding init files
2535 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2536 for sending data through UDP sockets (thanks to François-René Rideau)
2537 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2538 error is signalled instead (thanks to François-René Rideau)
2539 * minor incompatible change: Error signalling behaviour of lexical
2540 operations violating package locks has changed slightly. Refer to
2541 documentation on package locks for details.
2542 * enhancement: EVAL can process IF-expressions without resorting to the
2544 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2545 constant-folded properly due to missing out-of-line functions.
2546 (reported by Mika Pihlajamäki)
2547 * bug fix: LISTEN sometimes returned T even in cases where no data was
2548 immediately available from the stream
2549 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2550 were reversed. (reported by Levente Mészáros)
2551 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2552 when given a vector displaced to an adjustable array. (reported
2554 * bug fix: derivation of float boundaries from numbers outside the
2555 appropriate float range (reported by John Wiseman)
2556 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2558 * bug fix: precomputing cache entries for generic functions with
2559 some subclasses of specializers as yet invalid does not attempt to
2560 fill a cache line with a negative offset. (reported by Levente
2562 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2563 allow condition class objects as arguments to DOCUMENTATION and
2564 (SETF DOCUMENTATION); only find and set documentation for
2565 structure names for the STRUCTURE doc-type. (suggested by Gary
2567 * improvements to the Win32/x86 port:
2568 ** (user-homedir-pathname) and default initialization file
2569 locations now know about the user's "Documents and Settings"
2570 directory (thanks to Yaroslav Kavenchuk)
2571 ** run-program is implemented (thanks to Mike Thomas)
2572 ** sockets support (thanks to Timothy Ritchey)
2573 ** better backtrace support (thanks to Alastair Bridgewater)
2574 ** sb-grovel supported
2575 ** asdf-install and sb-posix work somewhat
2576 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2577 * improvements to the Solaris/x86 port:
2578 ** works on Solaris 11/Solaris Express
2579 ** floating-point exception handling support
2580 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2581 * fixed some bugs revealed by Paul Dietz' test suite:
2582 ** REMOVE-METHOD returns its generic function argument even when
2583 the method is not one of the generic functions' methods.
2584 ** objects declared as MEMBER types can be admissible arguments to
2585 structure accessors.
2586 ** printing characters should simply be printed by the FORMAT ~:C
2588 ** compiler failure when compiling functions with hairy constant
2589 defaults for optional parameters.
2590 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2591 function, which is already optimized.
2593 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2594 * new platform: experimental support for SBCL x86/Darwin, including
2595 MacOS X 10.4.5 on Intel.
2596 * new feature: Unicode character names are now known to the system
2597 (through CHAR-NAME and NAME-CHAR).
2598 * new feature: the filesystem location of SBCL's core file is
2599 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2600 * minor incompatible change: the contrib modules SB-POSIX and
2601 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2602 this change is to make it easier to distribute
2603 location-independent binaries.
2604 * bug fix: as implied by AMOP, standardized classes no longer have
2605 slots named by external symbols of public packages. (reported by
2607 * optimization: calling functions via constant symbols -- as in
2608 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2609 via the function object as in (FUNCALL #'FOO).
2610 * optimization: on x86 and x86-64, the calling convention for the
2611 case of dealing with an unknown number of values has been altered
2612 to be friendlier to the prediction heuristics implemented,
2613 particularly with reference to CALL and RET pairing. (thanks to
2614 Alastair Bridgewater)
2615 * optimization: on x86, the code for access to thread-local symbol
2616 values and binding/unbinding of thread-local symbols is smaller.
2617 (thanks to Alastair Bridgewater)
2618 * enhancement: CONSTANTP is now able to determine constantness of
2619 more complex forms, including calls to constant-foldable standardized
2620 functions and some special forms beyond QUOTE.
2621 * fixed bug: occasional GC crashes on Solaris/x86
2622 * optimization: x86-64 supports stack allocation of results of simple
2623 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2624 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2625 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2626 (thanks to James Knight)
2627 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2628 by the standard (thanks to Stephen Compall)
2630 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2631 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2632 be used for bundling the runtime and the core file into one
2633 executable binary. This feature is not currently supported on all SBCL
2634 platforms. (thanks to James Bielman and NIIMI Satoshi)
2635 * new feature: a generational or ephemeral garbage collector is now
2636 the default on the PowerPC platform (both Linux and Darwin). The
2637 old Cheney (stop and copy) collector is a build-time option.
2638 (thanks to Cyrus Harmon, after Raymond Toy)
2639 * minor incompatible change: the method by which SBCL finds its
2640 contributed modules has changed; it no longer relies on symbolic
2641 links from an $SBCL_HOME/systems directory, but searches directly
2642 in the subdirectories of $SBCL_HOME.
2643 * enhancement: the dynamic heap size on the Linux/PPC platform is
2644 markedly larger, even using the older Cheney garbage collector.
2645 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2646 certain complicated string types. (reported by Gary King)
2647 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2648 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2649 * fixed bug: DOCUMENTATION on structures no longer signals an
2650 error if no structure type of the right name exists. (reported by
2652 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2653 applicable non-standard primary or :AROUND method on
2654 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2655 no longer cause unbound variable errors. (reported by Kevin Reid)
2656 * fixed bug: metacircle resolution in cases where methods have slots
2657 added before the slots from STANDARD-METHOD. (reported by Jean
2659 * fixed bug: the Power PC assembly code for calling into lisp
2660 sometimes computed its return address wrongly (depending on the
2661 15th bit of the address, fixed at link time). This used to
2662 manifest itself in a segmentation violation while building PCL.
2663 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2664 many others over the years)
2665 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2666 the stack pointer (treated as a signed integer) is negative.
2667 (thanks to Peter van Eynde)
2669 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2670 * new platform: experimental support for the Windows operating
2671 system has been added. (thanks to Alastair Bridgewater)
2672 * fixed several bugs in and robustified the PPC FFI (including
2673 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2674 * bug fix: allow non-simple string symbol names (reported by Paul
2676 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2678 * bug fix: saving a core corrupted callbacks on x86/x86-64
2679 * bug fix: closed a loophole in metacircularity detection and
2680 grounding in the PCL implementation of CLOS.
2681 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2682 (reported by tomppa on #lisp)
2683 * bug fix: clear the direction flag on Lisp -> C transitions, as
2684 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2685 (reported by Andrej Grozin and Hendrik Maryns)
2686 * optimization: major improvements to GC efficiency on GENCGC platforms
2687 * optimization: faster implementation of EQUAL
2688 * optimization: emit more efficient opcodes for some common
2689 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2690 * optimization: several other minor code-generation improvements on x86-64
2691 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2693 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2694 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2695 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2696 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2697 by ANSI as a generic function, and for consistency (SETF
2698 GENERIC-FUNCTION-NAME) is treated likewise.
2699 * fixed bug #233.b: make constraint propagation notice when a variable
2700 value is changed after it is referenced but before it is used
2701 * fixed bug #296: no more arbitrary behaviour from filenames with
2702 odd characters as --load arguments. (reported by Adam Warner)
2703 * fixed bug #390: :CHARACTER-SET pathname components now work as
2704 expected. (reported by Tim Daly Jr)
2705 * fixed bug #391: complicated :TYPE intersections in slot
2706 definitions no longer cause an error in PCL internals.
2707 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2708 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2709 returning the number of octets which would be written to the
2710 file-stream. (thanks to Robert J. Macomber)
2711 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2712 arguments to the internal stream functions. (thanks to David
2714 * bug fix: stack exhaustion is now handled on the x86/SunOS
2715 platform. (thanks to Daisuke Homma)
2716 * bug fix: more accurate ROOM results on GENCGC platforms
2717 * optimization: improved type inference for arithmetic-for
2718 index variables in LOOP
2719 * optimization: faster floating-point SQRT on x86-64
2720 * fixed some bugs revealed by Paul Dietz' test suite:
2721 ** DOCUMENTATION returns NIL instead of "" for method combinations
2722 that don't have a docstring
2724 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2725 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2726 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2727 therefore are not customizeable by user code (as seems to be at
2728 least permitted and maybe required by AMOP). As a consolation,
2729 however, the SBCL implementation of these functions now calls
2730 REINITIALIZE-INSTANCE as specified by AMOP.
2731 * bug fix: slot-definition documentation is propagated as per ANSI
2732 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2733 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2734 argument, as do eslotd initialization methods. (from Pascal
2735 Costanza's "Closer" project)
2736 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2737 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2739 * bug fix: it is now possible to have more than one subclass of
2740 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2741 (reported by Bruno Haible, Pascal Costanza and others)
2742 * bug fix: the dependent update protocol now works for generic
2743 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2744 and Pascal Costanza)
2745 * bug fix: condition-class instances corresponding to
2746 DEFINE-CONDITION forms are now created eagerly. (reported by
2747 Kalle Olavi Niemitalo on comp.lang.lisp)
2748 * bug fix: floating point printing is more accurate in some
2749 circumstances. (thanks to Simon Alexander)
2750 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2751 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2752 * bug fix: callbacks on OS X now preserve stack-alignment.
2753 (thanks to Cyrus Harmon)
2754 * enhancement: the x86-64 disassembler is much better at
2755 disassembling SSE instructions. (thanks to Lutz Euler)
2756 * enhancement: CHECK-TYPE on a variable now allows type-inference
2757 (thanks to Vincent Arkesteijn)
2758 * optimization: improved performance of EUC-JP external format.
2759 (thanks to NIIMI Satoshi)
2760 * optimization: performance improvements to IO on file streams of
2761 :ELEMENT-TYPE CHARACTER
2762 * optimization: much faster memory allocation on x86-64
2763 * optimization: faster garbage collections (latency and throughput)
2765 * optimization: faster bignum subtraction and division on x86 and x86-64
2766 (thanks to Lutz Euler)
2767 * optimization: more accurate type-inference for loops that use a
2768 floating point index variable or a negative step.
2770 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2771 * bug fix: add a workaround to SBCL looping infinitely at startup on
2772 Linux kernels with apparently buggy implementations of personality().
2773 (thanks to Svein Ove Aas)
2774 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2775 (thanks to David Lichteblau)
2776 * bug fix: local bindings shadow global symbol macros for
2777 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2778 * optimization: non-open coded uses of numeric comparison operators
2779 (e.g. >) no longer cons when called with more than one parameter
2780 on platforms supporting dynamic-extent allocation.
2781 * enhancement: saving cores with foreign code loaded is now supported
2782 on MIPS/Linux in addition to the previously supported platforms.
2783 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2784 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2785 * bug fix: division by zero in sb-sprof when no samples were collected
2786 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2787 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2788 (thanks to Alexander Kjeldaas)
2789 * new feature: ignoring the return values of destructive functions
2790 like NREVERSE signals a compile-time style-warning.
2791 (thanks to Kevin Reid)
2792 * new feature: the alignment of alien structure fields can be
2793 explicitly specified. (thanks to Cyrus Harmon)
2794 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2795 and dump core on SIGQUIT
2797 ** incompatible change: threads do not inherit values of specials
2798 from their parents (see manual)
2799 ** bug fix: threads stacks belonging to dead threads are freed by the
2800 next exiting thread, no need to gc to collect thread stacks anymore
2801 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2802 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2803 ** bug fix: dynamic variable and thread start related gc lossage
2804 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2806 * fixed some bugs revealed by Paul Dietz' test suite:
2807 ** SUBTYPEP is slightly more accurate on heinously complicated
2808 CONS types where some of the members have uncertain (in the
2809 NIL, NIL sense) type relationships to each other.
2811 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2812 no longer purified unless :PURIFY T is explicitly specified.
2813 ** Non-purified cores are significantly smaller than before
2815 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2816 * new feature: timers based on Zach Beane's excellent timer package
2817 * added support for the following external formats: koi8-u,
2818 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2819 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2820 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2821 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2822 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2823 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2824 * incompatible change: a threaded SBCL will no longer revert to
2825 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2826 * bug fix: interrupts are disabled until startup is complete; no
2827 more sigsegvs when receiving a signal to soon
2828 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2830 * bug fix: add a workaround for the memory randomization features in
2831 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2832 workaround will only be in effect on systems with the proc filesystem
2834 * bug fix: printing objects of type HASH-TABLE signals a
2835 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2837 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2838 have been running for over 50 days. (reported by Gilbert Baumann)
2839 * bug fix: the logic for getting names of functions gets less
2840 confused when confronded with alternate-metaclass
2841 funcallable-instances. (reported by Cyrus Harmon)
2842 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2843 consistent, even on internal alternate-metaclass objects.
2844 * bug fix: flush closure information collected by physical
2845 environment analysis prepass before the main pass. (bug reported
2847 * bug fix: compiler pack phase does not modify a hashtable, which is
2848 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2849 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2850 may be expanded. (reported by Alexander <malishev> on c.l.l)
2851 * bug fix: no more style-warnings when compiling code using LAST
2852 under high-SPEED low-SPACE settings. (reported by David Wallin
2854 * fixed some incompatibilities between SBCL's MOP and the MOP
2856 ** the METAOBJECT class is now implemented;
2857 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2858 STANDARD-OBJECT, as required;
2859 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2860 now compatible (as required by VALIDATE-SUPERCLASS); there
2861 remains a consistency requirement over the presence or absence
2862 of the FUNCTION class in the superclass list of finalized
2863 classes; see the manual for more details;
2864 ** the :AROUND method for COMPUTE-SLOTS on
2865 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2866 requested slot ordering.
2868 ** bug fix: parent thread now can be gc'ed even with a live
2870 ** bug fix: binding a special with PROGV to no value is not
2871 the same as that symbol not having been bound (thanks to
2873 ** bug fix: binding specials is thread safe (thanks to
2875 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2876 and SB-SPROF do not die with 'no handler for signal XX in
2877 interrupt_handle_now(..)' anymore
2878 ** bug fix: WITH-TIMEOUT works with multiple running threads
2879 * fixed some bugs revealed by Paul Dietz' test suite:
2880 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2881 the :method-class keyword argument.
2883 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2884 * new port: the Solaris operating system on x86 processors is now
2885 mostly supported, though some rough edges in the environment
2886 remain. (thanks to Daisuke Homma)
2887 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2888 space for its heap. (thanks to Thiemo Seufer)
2889 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2890 closures. (thanks to Thiemo Seufer)
2891 * minor incompatible change: eof selects abort in the debugger.
2892 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2893 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2895 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2896 deprecated, and will go away in a future revision of SBCL.
2897 * minor incompatible change: GC-ON and GC-OFF are no longer
2898 implemented with a counter, it does not matter how many times gc
2899 is switched on or off
2900 * bug fix: discriminating functions for generic function classes
2901 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2902 make invalid assumptions about method precedence order. (reported
2904 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2905 platforms. (thanks to Thiemo Seufer)
2906 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2907 * bug fix: correct pathname printing with printer escaping is on.
2908 (thanks to Kevin Reid)
2909 * bug fix: complex VOP definitions in "user-space" no longer trigger
2910 package locks. (reported by Zach Beane)
2911 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2912 for funcallable-instance functions, and is no different from
2914 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2915 characters in the current readtable. (reported by Nicholas Neuss)
2916 * bug fix: SUBTYPEP on various CONS types returns more a more
2917 accurate acknowledgment of its certainty.
2918 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2919 lists in some cases. This partially fixes bug 384.
2920 * flush all standard streams before prompting in the REPL and the
2922 * bug fix: signal handling and triggering gc do not conflict
2923 directly anymore, in particular a high frequency sb-sprof does
2924 not prevent gc from running
2925 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2926 approximation for timezone and DST information between the
2927 universal time epoch and the smallest negative 32-bit time_t.
2928 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2929 year 1899 so long as the encoded time is non-negative.
2930 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2931 the correct answer for non-constant rotate amounts when performing
2932 an inline 32-bit rotation.
2934 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2935 there is only one thread in the session
2936 ** bug fix: memory leak for streams created in one thread and
2937 written to in another
2938 ** bug fix: lockup when compiled with gcc4
2939 ** bug fix: race that allows the gc to be triggered when gc is
2941 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2942 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2944 ** bug fix: finished threads are gc'ed properly
2945 * fixed some bugs revealed by Paul Dietz' test suite:
2946 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2947 has arguments with a different set of applicable methods from
2948 the orignal arguments.
2949 ** The type error thrown by MAP now has a correct expected-type
2951 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2952 name a compiled function.
2953 ** Three MISC tests where a large bignum was improperly coerced to
2954 a float that couldn't represent that bignum during type
2955 derivation were fixed.
2956 ** SUBTYPEP can now handle types involving the negation of a
2957 list-form FUNCTION type.
2958 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2959 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2960 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2962 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2963 * New feature: Experimental support for bivalent streams: streams
2964 opened with :element-type :default now allow character and binary
2965 (unsigned-byte 8) I/O
2966 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2967 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2969 * bug fix: no more highly sporadic "couldn't check whether ~S is
2970 readable" when reading a stream and an interrupt hits in the middle
2971 of a select system call
2972 * compiler better recognizes complex arrays (reported by Eduardo
2974 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2975 for variables on SBCL built with linkage-tables. (reported by Luis
2977 * various error reporting improvements.
2978 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2979 (Thanks to Thiemo Seufer)
2980 * bug fix: nested reader invokations work correctly
2981 * bug fix: it is possible to have simultaneous references to foreign
2982 code and foreign data with the same name.
2984 ** added x86-64 support
2985 ** incompatible change: the threading api now works with thread
2986 objects instead of thread ids
2987 ** bug fix: threads are protected from signals and interruption when
2988 starting up or going down
2989 ** bug fix: a race where an exiting thread could lose its stack to gc
2990 ** bug fix: don't halt on infinite error in threads if possible
2991 ** fixed numerous gc deadlocks introduced in the pthread merge
2992 ** bug fix: fixed thread safety issues in read and print
2993 ** bug fix: debugger doesn't hang on session lock if interrupted at
2994 an inappropriate moment
2995 ** bug fix: run-program is now thread safe(r)
2996 ** bug fix: inner with-recursive-lock no longer releases the mutex
2997 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2998 * fixed some bugs revealed by Paul Dietz' test suite:
2999 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3000 EXPECTED-TYPE slots filled.
3001 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3003 ** MAKE-CONDITION accepts classes as type-designators.
3004 ** COMPILE may never return NIL.
3005 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3006 range before calling Unix time functions
3008 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3009 * numerous signal handling fixes to increase stability
3010 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3011 * minor incompatible change: we now correctly canonize default
3012 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3013 as per the MOP, rather than the historical (INITARG INITFUNCTION
3014 INITFORM). (reported by Bruno Haible)
3015 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3016 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3017 for more information.
3018 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3019 pathname is a directory pathname.
3020 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3021 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3023 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3024 :METACLASS argument in addition to a class name. (reported by
3025 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3026 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3027 (reported by Bruno Haible; patch from Gerd Moellmann)
3028 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3030 * bug fix: more cleanups to the floating point exception handling on
3031 x86-64 (thanks to James Knight)
3032 * bug fix: the compiler does not try to constant fold calls of
3033 COERCE and BIT-* functions when they return freshly constructed
3034 objects. (reported by Nikodemus Siivola and Paul Dietz)
3035 * optimization: improved the MIPS versions of generic (in the
3036 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3037 * optimization: direct conversion of (unsigned-byte 32) to floats on
3038 the PowerPC platform.
3039 * optimization: structure instances with raw slots now use less
3040 memory, and probably show better memory locality. (thanks to
3042 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3043 are treated as requests for stack allocation on the x86-64,
3044 Alpha-32, PPC and SPARC platforms.
3045 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3046 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3047 (thanks to Tony Martinez)
3049 ** gcing a dead thread can no longer lead to lockups
3050 ** threads block signals until they are set up properly
3051 ** errno is no longer shared by threads
3052 ** interrupt-thread restores the eflags register on x86
3053 ** fixed some lockups due to gc/thread interaction
3054 * fixed some bugs revealed by Paul Dietz' test suite:
3055 ** invalid dotted lists no longer raise a read error when
3056 *READ-SUPPRESS* is T
3057 ** signal an error if a symbol that names a declaration is used
3058 as the name of a type, or vice versa
3059 ** allow using the (declare (typespec var*)) abbreviation for
3060 (declare (type typespec var*)) with all type specifiers
3061 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3062 ** always return NIL from PPRINT-POP when OBJECT is NIL
3063 ** don't signal errors when pretty-printing malformed LABELS,
3064 FLET or MACROLET forms
3065 ** declarations in a DOLIST body are also in scope for the
3067 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3069 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3072 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3073 * fixed cross-compiler leakages that prevented building a 32-bit
3074 target with a 64-bit host compiler.
3075 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3076 opened with :IF-EXISTS :OVERWRITE.
3077 * fixed bug 281: error for an invalid qualifier in a short-form method
3078 combination method is not signalled until the faulty method is called.
3079 * bug fix: iteration variable type inferrer failed to deal with open
3080 intervals. (reported by Alan Shields)
3081 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3082 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3083 or more runtime options were provided to the sbcl binary.
3084 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3085 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3086 * optimization: there's now a fast-path for fixnum arguments in the
3087 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3088 * optimization: the code generated on x86-64 is more compact thanks
3089 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3090 * bug fix: floating-point exception handling now partly works on
3091 x86-64. (Thanks to James Knight)
3092 * improvement to the MIPS backend from Thiemo Seufer: C-style
3093 64-bit long long arguments and return values to alien functions
3095 * fixed some bugs revealed by Paul Dietz' test suite:
3096 ** the type-error signalled from WARN has a filled-in DATUM slot.
3097 ** the type-error required when a stream is not associated with
3098 a file has the stream as its datum.
3099 ** type-errors on single-floats on x86-64 no longer have
3100 :INVALID-OBJECT as the datum
3101 ** the type-errors signalled for invalid function names now have
3102 a correct expected type
3103 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3104 for structures defined with a :TYPE. Documentation strings for
3105 typed structures are no longer immediately discarded
3106 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3107 broadcast streams and synonym streams. FILE-LENGTH now also works
3108 on broadcast streams.
3110 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3111 * incompatible change: the --noprogrammer option, deprecated since
3112 version 0.7.5, has been removed. Please use the equivalent
3113 --disable-debugger option instead.
3114 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3116 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3117 inoperational for a while now) has been completely removed.
3118 * null lexical environments are now printed as #<NULL-LEXENV>,
3119 significantly reducing the amount of clutter in typical backtraces.
3120 * documentation on weak pointers, finalization, and after GC hooks
3121 has been added to the manual.
3122 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3123 as other specialized array types, is much faster. SUBSEQ and
3124 COPY-SEQ on such arrays have also been sped up.
3125 * optimization: EQL is now more efficient when at least other argument
3126 is known to be of type (OR FIXNUM (NOT NUMBER)).
3127 * fixed bug: the runtime is now less vulnerable to changes in the
3128 size of the SBCL object on OS X, and virtual memory is reserved for
3129 all spaces that need to be at a fixed address.
3130 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3131 * fixed bug: finalizers and after GC hooks that cause consing are now
3133 * fixed bug: compiler error messages and summaries are now printed to
3134 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3135 * fixed inference of the upper bound of an iteration variable.
3136 (reported by Rajat Datta).
3137 * fixed bug 211e: calling local functions with duplicated constant
3138 keyword argument no longer causes a bogus style warning about an
3140 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3141 ftype declaration to be disregarded. (reported by Dave Roberts)
3142 * fixed bug 373: caused by erronous compilation of references to alien
3143 variables in the runtime on ppc/darwin.
3144 * fixed bug 376: CONJUGATE type deriver.
3145 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3146 (reported by Baughn on #lisp)
3147 * a cross-compiler bug on non-x86 platforms has been identified and
3148 fixed. (thanks to Bruno Haible)
3149 * improvements to the MIPS runtime code for increased stability.
3150 (thanks to Thiemo Seufer)
3151 * increased the maximimum compact environment size to allow
3152 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3153 * partial workaround for bug 135: don't name the function we're
3154 calling for hairy cases of EVAL, so as not to accumulate one environment
3155 entry per call to EVAL. (reported by Kevin Reid)
3156 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3157 * optimization: type testing for non-vector arrays should be faster.
3158 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3160 * bug fix: setting 31st element of a bit vector to zero did not work
3162 * bug fix: redefining a class definition which failed due to a
3163 previous accessor / function clash now works (but see BUGS entry
3164 #380 for more problems in this area). (thanks to Zach Beane)
3165 * the long form of DEFINE-METHOD-COMBINATION disables method group
3166 checking when given a single method group with pattern *. (thanks
3168 * on x86 compiler supports stack allocation of results of simple
3169 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3170 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3171 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3172 * fixed some bugs related to Unicode integration:
3173 ** the restarts for recovering from input and output encoding
3174 errors only appear when there is in fact such an error to
3176 * fixed some bugs revealed by Paul Dietz' test suite:
3177 ** MISC.549 and similar: late transformation of unsafe type
3178 assertions into derived types caused unexpected code
3180 ** SCALE-FLOAT type deriver is less wrong.
3181 ** type derivers for EXP, LOG and similar functions compute result
3182 types for complex arguments better.
3183 ** (MISC.563) CONJUGATE type deriver works for very restricted
3185 ** out-of-line type testers for character strings are available.
3186 ** EQUAL compiler transform understands specialness of objects
3188 ** accessing double-floats stored on the stack now works on x86-64.
3189 ** debugger internals could sometimes create invalid lispobjs,
3190 resulting in GC crashes.
3191 ** MISC.548: type check weakening can convert required type into
3193 ** initialization forms for bindings are not in scope of free special
3196 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3197 * incompatible change: thread support for non-NPTL systems has
3198 been removed - locking is buggy and unreliable. A threaded
3199 SBCL build will now warn at startup and refuse to create
3200 new threads, unless futex support is detected in the kernel
3201 * incompatible change: the top level REPL now has only an ABORT
3202 restart associated with it, not TOPLEVEL and ABORT as it used to.
3203 TOP and TOPLEVEL are now available as debugger commands for
3204 returning to the top level.
3205 * incompatible change: forms evaluated in the REPL now use the
3206 global optimization policy.
3207 * incompatible change: user- and system-initialization files are
3208 no longer processed with LOAD, but by READ and EVAL; hence the
3209 global optimization policy, startup package, readtable, etc,
3211 * The .fasl file format number has been incremented because of
3212 various incompatible changes.
3213 * internal entry point details and argument counts no longer appear
3214 in backtraces unless explicitly requested by setting
3215 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3216 * built-in and standard functions no longer have names like "top
3217 level local call to FOO".
3218 * fixed bug 32: functions defined in non-null lexical environments
3219 now have more legible printed representation
3220 * fixed bug 33: functions defined in non-null lexical environemnts
3221 are now more amenable to inspection by INSPECT.
3222 * workaround for bug 354: XEPs no longer appear in backtraces unless
3223 explicitly requested.
3224 * fixed bug: receiving the signal which results from attempting to
3225 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3226 SIGBUS on other *BSDs) on architectures where the C stack is also
3227 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3228 to debugger confusion or wild instability. (reported by Cheuksan
3230 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3231 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3232 (reported by Lutz Euler)
3233 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3234 compiled code. (reported by Paul Dietz)
3235 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3236 specialized parameter to a method to something that is not TYPEP
3237 the specializer is now possible.
3238 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3239 face of package deletion.
3240 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3241 pathname. (reported by David Tolpin on c.l.l)
3242 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3243 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3244 STRING-STREAM and FILE-STREAM, respectively.
3245 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3246 than previously; in addition, its test suite is now run on build.
3247 (thanks to Luke Gorrie)
3248 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3249 * optimization: added a immediate representation for single-floats
3251 * fixed some bugs revealed by Paul Dietz' test suite:
3252 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3253 ** attempting to create a package with a colliding nickname causes
3254 correctable errors to be signalled.
3255 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3256 ** several x86-64 backend bugs related to sign-extension of immediate
3259 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3260 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3261 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3263 * fixed loading of multiply forward-referenced layouts.
3264 (thanks to Cheuksan Wang)
3265 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3266 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3267 (see COMPILE-FILE documentation for details of :PRINT option)
3268 * fixed bugs 19 and 317: fixed-format floating point printing is
3269 more accurate. This also fixes a bug reported by Adam Warner
3270 related to the ~@F format directive.
3271 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3273 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3274 dispatch table if the from-char is a dispatch macro character.
3275 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3276 by the wordsize no longer ignore the last word. (reported by Lutz
3278 * fixed bug in type checking of dynamic-extent variables. (reported
3280 * optimization: sequence traversal functions use their freedom to
3281 coerce function designators to functions.
3282 * optimization: code with many calls to CLOS methods specialized on
3283 CLOS classes has had redundant type checks removed.
3284 * optimization: added declarations to speed up operations that access
3285 the internal character database (for example STRING-UPCASE)
3286 * optimization: comparison operations between floats and sufficiently small
3287 fixnums no longer create extra rationals
3288 * fixed some bugs related to Unicode integration:
3289 ** portions of multibyte characters at the end of buffers for
3290 character-based file input are correctly transferred to the
3291 start of the buffer at the next read.
3292 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3293 passing it through to OPEN.
3294 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3295 argument given to internal calls to OPEN.
3296 ** the built-in comment readers (introduced by character sequences
3297 ";" and "#|") are more forgiving to encoding errors; they will
3298 STYLE-WARN and then attempt to resync the stream at a character
3299 boundary. (thanks to Teemu Kalvas)
3300 * fixed some bugs in the x86-64 port:
3301 ** Negative short int return values from c-calls are sign-extended
3303 ** The stack is aligned to 16-bytes for c-calls, as required by
3304 the ABI. (thanks to Cheuksan Wang)
3305 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3306 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3307 for enums. (thanks to Vincent Arkesteijn)
3308 ** Multiple small optimizations and bugfixes for floating point
3310 * fixed some bugs revealed by Paul Dietz' test suite:
3311 ** Space, Tab, Linefeed, Return and Page have the invalid
3312 secondary constituent character trait.
3313 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3315 ** WITH-INPUT-FROM-STRING should only update the index place on
3317 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3318 works more reliably.
3319 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3320 with one-dimensional arrays with fill pointers.
3321 ** TYPE-OF failed on a complex with an integer realpart and a
3323 ** compiler failure during type inference for the code of form
3324 (IF (EQL X (THE ...)) ...) (MISC.535).
3326 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3327 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3328 platform. The port supports 61-bit fixnums, large memory spaces
3329 and reloading shared object files.
3330 * enhancement: saving cores with foreign code loaded is now
3331 supported on ppc/Darwin in addition to the previously supported
3333 * enhancement: the statistical profiler now walks deeper into the
3334 call stack for more meaningful call-graphs and accrued time
3335 reports (x86/x86-64 only). It also now reports time spent in
3337 * enhancement: it is now possible to trace most individual methods
3338 of a generic function in addition to tracing the generic function
3340 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3342 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3343 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3344 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3345 produces an error. (thanks to Vincent Arkesteijn)
3346 * bug fix: NAMESTRING on pathnames with :WILD components in their
3347 directories works correctly. (thanks to Artem V. Andreev)
3348 * fixed bug 125: compiler preserves identity of closures. (reported
3350 * bug fixed: functions with &REST arguments sometimes failed with
3351 "Undefined function" when compiled with (DEBUG 3). (reported by
3353 * bug fix: overflow during compiling of setting element of a bit
3354 vector with constant index and value. (reported by Timmy Douglas)
3355 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3356 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3357 * on x86 compiler partially supports stack allocation of dynamic-extent
3359 * GO and RETURN-FROM do not check the extent of their exit points
3360 when compiled with SAFETY 0.
3361 * fixed some bugs related to Unicode integration:
3362 ** encoding and decoding errors are now much more robustly
3363 handled; it should now be possible to recover even from invalid
3364 input or output to the terminal. (thanks to Teemu Kalvas)
3365 ** provided a first cut at implementing STRING-TO-OCTETS and
3366 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3367 ** altered the SB-MD5 contributed module slightly, changing the
3368 interface just enough for it to be supportable for builds where
3369 lisp characters are not eight bits.
3370 * fixed some bugs revealed by Paul Dietz' test suite:
3371 ** the FORMATTER-generated functions for ~V[ conditionals require
3372 the correct number of arguments.
3373 ** READ-FROM-STRING returns the mandated second value when applied
3374 to displaced strings.
3375 ** the #\Rubout and #\Backspace characters are treated as invalid
3376 constituent characters by the tokenizer.
3378 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3379 * new feature: reloading changed shared object files with
3380 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3381 * new feature: references to foreign variables and functions
3382 can now be compiled and loaded before the corresponding shared
3383 object file is loaded, as long as the foreign definitions are
3384 available at runtime.
3385 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3386 supported. (thanks to Dan Debertin)
3387 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3388 just keywords. (thanks to Vincent Arkesteijn)
3389 * fixed bug #331: structure-class instances corresponding to
3390 DEFSTRUCT forms are now created eagerly.
3391 * fixed bug #345: backtraces from calls to undefined functions work
3392 on x86 as well. Related bug #61 is now also partially fixed on x86
3393 (backtraces from throws to unknown catch tags.)
3394 * bug fix: lambda-list parsing is now stricter vrt. order and number
3395 of lambda-list keywords.
3396 * bug fix: as specified by AMOP, an error is signalled if a
3397 class-option appears multiple times in a DEFCLASS form. (reported
3399 * bug fix: RANDOM can be compiled when the compiler derives the type
3400 of its numeric argument as a disjoint set of small integers.
3401 (reported by Paul Dietz)
3402 * bug fix: starting a core saved with shared objects loaded when
3403 those objects are not available no longer causes threaded SBCL to
3404 hang. (reported by Sean Ross)
3405 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3407 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3408 argument, which must always be NIL. (reported by Kalle Niemitalo)
3409 * bug fix: printing 1.0d+23 no longer results in an error.
3410 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3411 * bug fix: structure slot setters preserve evaluation order. (thanks
3413 * fixed some bugs related to Unicode integration:
3414 ** RUN-PROGRAM can allow its child to take input from a Lisp
3415 stream. (reported by Stefan Scholl)
3416 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3417 locales. (reported by Ken Causey)
3418 * fixed some bugs revealed by Paul Dietz' test suite:
3419 ** INCF, DECF and REMF evaluate their place form as specified in
3421 ** FORMATTER expands ~{ ~} iteration directives with V or #
3422 parameters correctly.
3423 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3424 consequent uses no arguments correctly.
3425 ** the system has a partial understanding of the (COMPLEX RATIO)
3427 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3430 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3431 * new feature: a build-time option (controlled by the :SB-UNICODE
3432 keyword feature, enabled by default) for building the system with
3433 support for the entire 21-bit character space defined by the
3435 * new feature: the system now has rudimentary external-format
3436 support; the primary user-visible change at this time is that
3437 characters with the high bit set (such as lower-case-e-acute) will
3438 print correctly to a terminal in a UTF-8 environment.
3439 * minor incompatible change: BASE-CHAR no longer names a class;
3440 however, CHARACTER continues to do so, as required by ANSI.
3441 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3442 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3443 has been moved to the SB-EXT package (temporarily re-exported from
3445 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3446 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3448 * fixed bug #351: better error-handlind and reporting for malformed
3450 * fixed bug #350: bignum-printing is now more memory-efficient,
3451 allowing printing of very large bignums, eg. (expt 2 10000000).
3452 (reported by Bruno Haible)
3453 * fixed bug #302: better primitive-type selection for intersection
3455 * fixed bug #308: non-graphic characters now all have names, as
3456 required. (reported by Bruno Haible)
3457 * bug fix: redefining a class with different superclasses now correctly
3458 removes it from the direct-subclasses of its previous superclasses.
3459 (reported by David Morse)
3460 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3461 new value now works. (reported by Bruno Haible)
3462 * bug fix: correct canonicalization of multiple non-standard slot
3463 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3464 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3465 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3466 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3467 now exists, an signals an error.
3468 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3469 during macroexpansion for non-iteration variables as well. (reported
3470 by Bruno Haible for CMUCL)
3471 * bug fix: Cyclic structures and unprintable objects in compiler
3472 messages no longer cause errors. (reported by Bruno Haible)
3473 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3474 and READ-FROM-STRING all now return a primary value of NIL if
3475 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3476 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3477 (reported by Bruno Haible for CMUCL)
3478 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3479 do not designate a condition. (reported by Bruno Haible for
3481 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3482 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3483 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3484 permitting resolution in favour of any of the conflicting symbols.
3485 (reported by Bruno Haible for CMUCL)
3486 * bug fix: EQUAL compiler optimizations is less aggressive on
3487 strings which can potentially compare true despite having distinct
3488 specialized array element types.
3489 * bug fix: unit enumerations can be defined without dividing by
3490 zero. (thanks to Vincent Arkesteijn)
3491 * FORMAT compile-time argument count checking has been enhanced.
3492 (report from Bruno Haible for CMUCL)
3493 * a partial workaround for the bug 262: the compiler does not try to
3494 inline-expand a local function doing RETURN-FROM from a deleted
3495 BLOCK. (thanks to Peter Denno for the bug report and to David
3496 Wragg for the simple test case)
3497 * fixed some bugs revealed by Paul Dietz' test suite:
3498 ** RENAME-PACKAGE allows all package designators as new package
3500 ** constraint propagation and lambda variable substitution are
3501 more cautious in dealing with partially deleted code.
3502 ** compiler sometimes lost reoptimization passes.
3503 ** CERROR, given a condition as condition designator, passes its
3504 remaining arguments to the continue format control without
3506 ** Case-altering FORMAT directives work correctly on non-ASCII
3508 ** The REAL type specifier handles bounds outside the floating
3509 point ranges without signalling FLOATING-POINT-OVERFLOW.
3510 ** Functions with IR1-transformations can create intercomponent
3511 references to global functions.
3512 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3514 ** FORMAT ~R treats a nil value for its first parameter correctly.
3516 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3517 * enhancement: saving cores with foreign code loaded is now
3518 supported on x86/NetBSD and sparc/Linux in addition to the previously
3519 supported platforms.
3520 * bug fix: on some platforms repeated installations caused multiple
3521 copies of HTML documentation to be installed -- should not happen
3522 any more. (reported by Stefan Scholl)
3523 * bug fix: parsing self-recursive alien record types multiple times
3524 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3525 original patch by Helmut Eller for CMUCL)
3526 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3527 (thanks to Richard Kreuter)
3528 * bug fix: defining classes whose accessors are methods on existing
3529 generic functions in other (locked) packages no longer signals
3530 bogus package lock violations. (reported by François-René Rideau)
3531 * bug fix: special variables as DEFMETHOD parameters no longer have
3532 associated bogus type declarations. (reported by David Wragg and
3534 * bug fix: read-write consistency on streams of element-type
3535 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3536 * bug fix: redefiniton of the only method of a generic function with
3537 no DEFGENERIC no longer emits a full WARNING. In addition,
3538 redefinition of generic functions with no DEFGENERIC to an
3539 incompatible lambda list now signals an error. (thanks to Zach
3541 * bug fix: DEFGENERIC now works even when there's a function of the
3542 same name in an enclosing lexical environment. (thanks to Zach
3544 * fixed compiler failure, caused by instrumenting code during
3545 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3546 * optimization: added loop analysis and improved register allocation
3547 * fixed some bugs revealed by Paul Dietz' test suite:
3548 ** POSITION on displaced vectors with non-zero displacement
3549 returns the right answer.
3550 ** (SIMPLE-STRING) is a valid type specifier for sequence
3552 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3554 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3555 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3557 ** The justification version of the FORMAT ~< directive treats
3558 non-zero minpad parameter correctly.
3560 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3561 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3562 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3563 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3564 the supported interface.
3565 * new feature: Single-stepping of code compiled with DEBUG 2 or
3566 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3567 * new feature: saving cores with foreign code loaded is now
3568 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3569 Timothy Moore's work for CMUCL)
3570 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3571 parameters to * instead of NIL if no initform is supplied.
3572 (reported by Johan Bockgaard)
3573 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3574 correctly when FUNCALL appears as the car of the form. Note:
3575 despite this FUNCALL forms are not currently subject to
3576 compiler-macro expansion. (port of Raymond Toy's fix for the
3577 same from CMUCL, reported by Johan Bockgaard)
3578 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3579 (thanks for Teemu Kalvas)
3580 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3581 case instead of terminating the iteration (thanks for Julian
3582 Squires, Sean Champ and Raymond Toy)
3583 * bug fix: incorrect expansion of defgeneric that caused a style
3584 warning. (thanks for Zach Beane)
3585 * bug fix: slot accessor effective method computation works properly
3586 for classes with multiple non-standard applicable methods on
3587 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3588 * on x86 compiler supports stack allocation of results of LIST and
3589 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3590 CMUCL implementation by Gerd Moellmann)
3591 * fixed some bugs revealed by Paul Dietz' test suite:
3592 ** FORMAT strings with both the ~<~:;~> form of the justification
3593 directive and pretty-printing directives cause an error.
3595 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3596 * incompatible change: the internal functions
3597 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3598 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3599 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3600 instead of the old functions.
3601 * new feature: on platforms where "dladdr" is available foreign
3602 function names now appear in backtraces. (based on Helmut Eller's
3604 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3605 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3607 * documentation: ASDF manual is now distributed with SBCL.
3608 * bug fix: SBCL can now load its contributed modules with REQUIRE
3609 even if the system-provided entries have been removed from
3610 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3612 * bug fix: backtraces involving undefined functions or assembly
3613 routines are more informative. (thanks to Brian Downing)
3614 * bug fix: mutually referent alien structures now work correctly.
3615 (reported by Rick Taube)
3616 * bug fix: structures defined by WITH-ALIEN can be referred to
3617 within other definitions in the same WITH-ALIEN.
3618 * bug fix: division operators (MOD, TRUNCATE and the like) with
3619 constant zero divisors and integer dividends no longer generate
3621 * bug fix: provide default methods for INPUT-STREAM-P and
3622 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3623 * bug fix: improve the detection and resolution of MOP metacycles
3624 (where effective method computation depends on the generic function
3625 having its effective method computed). (reported by Bruno Haible)
3626 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3627 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3628 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3629 * bug fix: pathnames with relative directory components can be
3630 represented relative to default pathnames.
3631 * optimization: in taking the GCD of bignums, reduce the two bignums
3632 to approximately the same size (using Euclid's algorithm) before
3633 applying the more sophisticated binary GCD. (thanks to Juho
3635 * optimization: COUNT on bitvectors now operates word-at-a-time.
3636 * optimization: ASH with a positive, but not necessarily constant,
3637 (leftwards) shift, when in a modular context, is compiled to a
3639 * fixed some bugs revealed by Paul Dietz' test suite:
3640 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3641 if the corresponding argument is NIL.
3642 ** FORMAT directives accepting a minpad parameter treat negative
3644 ** literal commas as character parameters to FORMAT directives are
3646 ** literal spaces directly after ~<Newline> directives within a
3647 format-logical-block (~:< ~@:>) do not induce :FILL-style
3648 conditional newlines.
3649 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3650 as specified: it no longer includes conditional newlines).
3651 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3653 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3654 :PER-LINE-PREFIX argument does not evaluate to a string.
3656 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3657 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3658 the manual for details; for now, package locks can be disabled by
3659 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3660 if no major problems are found then it is likely that they will be
3661 compiled in unconditionally.
3662 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3663 unsupported operators on all platforms. To load a shared library
3664 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3665 object file, link it into a shared library outside of SBCL and
3666 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3668 * bug workaround: ROOM T and the GC were not working together
3669 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3670 reporting facility aren't preserved. That reporting has been
3671 disabled, so now until and unless someone figures out how to make it
3672 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3673 * minor incompatible change: as threatened around sbcl-0.8.0, the
3674 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3675 The symbols are also exported from SB-PCL for backwards
3676 compatibility, but more so than before SB-PCL should be treated as
3677 an implementation-internal package.
3678 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3680 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3681 It is known as of this release not to work on the Alpha, however.
3682 * fixed bug #167: errors signalled due to illegal syntax in method
3683 bodies are now more legible.
3684 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3685 designators and can hence be used with TYPEP.
3686 * fixed bug #333: CHECK-TYPE now ensures that the type error
3687 signalled, if any, has the right object to be accessed by
3688 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3689 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3690 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3692 * fixed bug #334: programmatic addition of slots using specialized
3693 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3694 and :ALLOCATION :CLASS slots.
3695 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3696 float exponents. (rereported by Peter Seibel)
3697 * fixed a bug: #\Space (and other whitespace characters) are no
3698 longer considered to be macro characters in standard syntax by
3699 GET-MACRO-CHARACTER.
3700 * fixed bug: initialization of condition class metaobjects no longer
3701 causes an instance of the condition to be created. (reported by
3703 * fixed bug: it is now possible to have slots such that
3704 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3705 description is neither :INSTANCE nor :CLASS.
3706 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3707 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3708 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3709 non-standard SLOT-DEFINITION-ALLOCATION values.
3710 * fixed bugs: various race conditions handling exiting threads.
3711 CL-PPCRE's thread torture test now passes.
3712 * fixed arguably-a-bug: GC time proportional to number of threads in
3713 system even when most of them are idle
3714 * optimization: improved performance of BIT and SBIT on bit-vectors.
3715 * .fasl file incompatibility: The fasl file version number has
3716 been incremented because of changes associated with package locks.
3718 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3719 * minor incompatible change: the system no longer provides
3720 optimization hints (conditions which are TYPEP
3721 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3722 mode; these hints are still emitted when higher SPEED optimization
3724 * new contrib module: a sampling profiler (profiling by statistical
3725 sampling, rather than by instrumenting functions) is available as
3726 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3727 * the behaviour of the standard function ED is now customizeable by
3728 third parties through a hook variable: see ED's documentation
3729 string for information on the protocol.
3730 * the compiler no longer emits efficiency notes for (FUNCALL X)
3731 when the type of X is uncertain under default optimization
3733 * fixed bug 276: mutating a binding of a specialized parameter to a
3734 method to something that is not TYPEP the specializer is now
3736 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3737 exhibit the required behaviour on the x86 platform. (thanks to
3738 Peter van Eynde, Eric Marsden and Bruno Haible)
3739 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3740 even for difficult arguments. (reported by Peter Graves)
3741 * fixed bug 141a: the backquote printer now descends quoted
3743 * fixed another bug in backquote printing: no more destructive
3744 modification of the form's list structure. (reported by Brian
3746 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3747 move between its address being taken and the call to
3748 interrupt_thread, fixing a crashing race condition.
3749 * the SB-POSIX contrib implementation has been adjusted so that it
3750 no longer exhibits ridiculously poor performance when constructing
3751 instances corresponding to C structs.
3753 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3754 * minor incompatible change: the sb-grovel contrib now treats C
3755 structures as alien (in the sense of SB-ALIEN) objects rather than
3756 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3757 has implications for memory management of client code
3758 (sb-grovel-returned objects must now be manually managed) and for
3759 type safety (alien objects now have full types).
3760 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3761 used to control emission of compiler diagnostics, rather than the
3762 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3763 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3764 quality should be considered deprecated.
3765 * install.sh now installs the user manual as well
3766 * (not quite a new documentable feature, but worth considering in
3767 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3768 beginnings of a semantically meaningful condition hierarchy is
3769 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3771 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3772 designator as the defaults argument.
3773 * fixed bug: Displaced arrays whose displaced-to array has become
3774 too small now cause ARRAY-DIMENSION to signal an error, providing
3775 for safer bounds-checking. (reported by Bruno Haible)
3776 * fixed bug: DEFCLASS slot definitions with identical :READER and
3777 :WRITER names now signal a reasonable error. (reported by Thomas
3779 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3781 * fixed bug: Invalid slot specification errors now print correctly.
3782 (thanks to Zach Beane)
3783 * fixed bug 320: Shared to local slot value transfers in class
3784 redefinitions now happen corrently from superclasses as
3785 well. (reported by Bruno Haible)
3786 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3788 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3789 improper lists correctly. (reported by Bruno Haible)
3790 * fixed bug 313: source-transform for <fun-name> was erroneously
3791 applied to a call of a value of a variable with name <fun-name>.
3792 (reported by Antonio Menezes Leitao)
3793 * fixed bug 307: The obsolete instance protocol ensures that
3794 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3795 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3796 remove dead unknown-values globs from the middle of the stack.
3797 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3798 easier to resume long computations after using *BREAK-ON-SIGNALS*
3799 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3800 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3801 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3802 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3803 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3804 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3806 * fixed a (fairly theoretical) bug in string printing: if
3807 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3808 does not have array-element-type equal to the most general string
3810 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3811 function name. (thanks to Nikodemus Siivola)
3812 * fixed bug: compile-time format string checker failed on
3813 non-closed ~{. (reported by Thomas F Burdick)
3814 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3815 don't warn on legal loop code involving more than one aggregate
3816 boolean. (thanks to Nikodemus Siivola)
3817 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3818 in keyword position to MAKE-PACKAGE was not being reported as
3820 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3821 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3823 * fixed bugs 280 and 312: the checking for multiple definitions in a
3824 file is less likely to become confused by uses of inline
3826 * fixed bug: the #S reader macro performs the keyword coercion
3827 specified for slot names. (reported by Kalle Niemitalo)
3828 * fixed bug: lambda lists may contain symbols whose names start with
3829 & but are not lambda-list-keywords; their occurrence triggers a
3831 * fixed bug 321: define-method-combination argument lambda lists do
3832 not cause invalid code to be generated when &optional or &aux
3833 variables have default values. (reported by Bruno Haible)
3834 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3835 have CLOS classes; this appears also to have fixed reported
3836 instability in stack exhaustion detection.
3837 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3838 MUFFLE-WARNING when no associated restart is present is now
3840 * optimization: rearranged the expansion of various defining macros
3841 so that each expands into only one top-level form in a
3842 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3844 * optimization: used a previously little-used slot in symbols to
3845 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3847 * fixed some bugs revealed by Paul Dietz' test suite:
3848 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3850 ** Fixed an optimization bug related to inheritance of initforms
3851 from local to shared slots.
3852 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3853 ** CAST optimizer forgot to flush argument derived type.
3854 ** print/read consistency on floats is now orders of magnitude
3855 more likely. (thanks also to Bruno Haible for a similar report
3857 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3858 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3859 for objects of type REAL. Make it so.
3860 ** SXHASH is specified (infelicitously) to respect similarity,
3861 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3862 it so. (thanks to Markus Ziegler)
3863 ** on the Alpha, the compiler succeeds in compiling functions
3864 returning a known number of arguments greater than 63.
3865 ** fixed handling of invalid NIL arguments in keyword position
3867 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3869 ** provided a readably-printable representation for RANDOM-STATE
3871 ** ensured that pathnames, where they have a namestring, always
3872 print using #P"..." syntax.
3874 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3875 * Support for the forthcoming 2.0 version of the NetBSD kernel
3876 running on x86 hardware has been added. (thanks to Perry
3877 E. Metzger most immediately, and others for their past work)
3878 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3879 current release version; SBCL's OpenBSD support had been broken
3880 since about the time of OpenBSD's switch to ELF binary format.)
3881 * [placeholder for DX summary]
3882 ** user code with &REST lists declared dynamic-extent, under high
3883 speed or space and low safety and debug optimization policy.
3884 * The manual has been converted to Texinfo format and the debugger
3885 chapter from the cmucl manual has been added.
3886 * A facility has been added to extract documentation strings from
3887 sbcl and store them as Texinfo-formatted snippets for inclusion in
3888 the manual (via Texinfo's @include directive)
3889 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3890 the test case to Dave Roberts)
3891 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3892 pointers. (reported by Sean Ross)
3893 * bug fix: PROFILE output is printed nicely even for large numerical
3894 values. (thanks to Zach Beane)
3895 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3896 greater than 32 handle EOF correctly.
3897 * bug fix: on X86 an immediate argument of the IMUL instruction is
3898 correctly printed in disassembly. (thanks to Lutz Euler)
3899 * bug fix: class slots in redefined classes preserve their old
3900 values. (thanks to Bruno Haible and Nikodemus Siivola)
3901 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3902 succeeds. (reported by Marco Baringer)
3903 * fixed some bugs revealed by Paul Dietz' test suite:
3904 ** READ-SEQUENCE now works on ECHO-STREAMs.
3905 ** RATIONALIZE works more according to its specification. (thanks
3908 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3909 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3910 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3911 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3912 should matter to you only if you rebind the printer control
3913 variables and then find you want different bindings in the
3914 debugger than in the ordinary execution of your program.)
3915 * The runtime build system has been tweaked to support building
3916 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3917 assembler and linker. (thanks to Nikodemus Siivola)
3918 * Unbound, undefined, undeclared variables now trigger full
3919 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3920 more often programmer error than deliberate exploitation of undefined
3922 * optimization: the hash algorithm for strings has changed to one
3923 that is less vulnerable to spurious collisions. (thanks to Juho
3925 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3926 needless bounds checking. (thanks to Juho Snellman)
3927 * optimization: implemented multiplication as a modular
3928 (UNSIGNED-BYTE 32) operation on the PPC backend.
3929 * fixed some bugs revealed by Paul Dietz' test suite:
3930 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3932 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3933 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3934 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3936 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3938 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3940 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3941 their output stream on EOF from read.
3942 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3943 have been read to end-of-file.
3944 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3946 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3947 description of determination of which consecutive characters
3949 ** Printing the "Space" character with escaping on now yields "#\\ ",
3950 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3951 ** Reading floating-point numbers with *READ-BASE* set to a number
3952 less than 10 works correctly.
3953 ** Reading floating-point numbers with *READ-BASE* set to a number
3954 more than 10 works correctly.
3955 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3956 the readtable currently in effect.
3958 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3959 * minor incompatible change: parsing of namestrings on a physical
3960 (Unix) host has changed; numbers after the final #\. in a
3961 namestring are no longer interpreted as a version field. This is
3962 intented to be largely invisible to the user, except that the
3963 meaning of the namestring "*.*.*" has changed: it now refers to a
3964 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3965 should usually be replaced by
3966 (make-pathname :name :wild :type :wild :version :wild)
3967 with the added benefit that this is more likely to be portable.
3968 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3969 option to OPEN now signals an error if the file being opened
3970 exists; this may have an impact on existing code.
3971 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3972 signals received, on the PowerPC platforms (both Linux and
3973 Darwin). (thanks to Pierre Mai for pointing out the location of
3975 * several fixes on OS X: The system now builds and runs cleanly on
3976 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3977 (thanks to Brian Mastenbrook)
3978 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3979 second-resolution: integer multiples of 1/3600 between -24 and 24.
3980 (thanks to Vincent Arkesteijn)
3981 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3982 type when called with 1 argument; PEEK-CHAR checked type of
3983 PEEK-TYPE only after having read first character from a
3984 stream. (reported by Peter Graves)
3985 * bug fix: the garbage collector now has much better locality
3986 behaviour, and in particular no longer treats all memory as being
3987 exhausted when many small objects point to each other in a deeply
3989 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3990 recognized as being TYPEP their class.
3991 * bug fix: the PUSHNEW documentation string has been corrected.
3992 (thanks to Vincent Arkesteijn)
3993 * bug fix: defaulting of the value for the last of an atypically
3994 large number of multiple values being bound was not being
3995 performed correctly on the Alpha or PPC platforms
3996 * optimization: implemented multiplication as a modular
3997 (UNSIGNED-BYTE 32) operation on the x86 backend.
3998 * optimization: SEARCH on simple-base-strings can now be open-coded.
3999 (see also contrib/compiler-extras.lisp for inspiration for
4000 teaching the compiler about the Boyer-Moore algorithm).
4001 * value, returned by MAX (and MIN) called with several EQUALP, but
4002 not EQL, arguments now does not depend on compiler settings.
4003 * fixed some bugs revealed by Paul Dietz' test suite:
4004 ** in stack analysis liveness information is propagated from
4005 non-local entry points.
4006 ** pathwise CAST removing failed when the CAST node did not start
4008 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4009 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4011 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4012 host is already defined.
4013 ** RENAME-FILE works on streams instead of signalling an internal
4015 ** PEEK-CHAR uses the current readtable when determining whether
4016 or not a character is whitespace.
4017 ** MERGE-PATHNAMES handles the case when the pathname does not
4018 specify a name while the default-pathname specifies a version.
4019 ** Pathnames now stand a better chance of respecting print/read
4021 ** Attempting to use standardized file system operators with a
4022 pathname with invalid :DIRECTORY components signals a
4024 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4026 ** DIRECTORY on logical pathnames is more correct.
4027 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4028 signal a TYPE-ERROR if their argument is not a stream.
4029 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4030 designator argument does not designate a stream.
4031 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4032 examining the synonym.
4033 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4035 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4036 element-type larger than ([UN]SIGNED-BYTE 32).
4038 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4039 * When built with the :SB-FUTEX feature, threaded builds now take
4040 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4041 for faster/more reliable mutex and condition variable support.
4042 * Incompatible change (but one you probably shouldn't have been using
4043 anyway): the interface and code for arbitrating between multiple
4044 threads in the same user session has been redesigned.
4045 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4046 error when called without an explicit environment argument.
4047 (thanks to Nikodemus Siivola)
4048 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4049 confused about their position. (thanks to Adam Warner and Gerd
4051 * bug fix: Pretty printing backquoted forms with unquotations in the
4052 argument list position of various code constructs such as LAMBDA
4053 now works correctly. (reported by Paul Dietz)
4054 * bug fix: Pretty printing unquotations no longer loses all
4055 stream position information.
4056 * optimization: performance of string output streams is now less
4057 poor for multiple small sequence writes.
4058 * optimization: performance of CSUBTYPEP in the presence of complex
4059 expressions involving CONS and NOT many times has been improved.
4060 (reported by Paul Dietz)
4061 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4063 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4064 streams for the REPL, for the debugger, and so on. (thanks to
4066 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4067 * fixed some bugs revealed by Paul Dietz' test suite:
4068 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4069 is ignored if it is too small, rather than propagating through
4070 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4071 ** extremely complex negations of CONS types were not being
4072 sufficiently canonicalized, leading to inconsistencies in
4074 ** VALUES tranformer lost derived type.
4076 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4077 * fixed a bootstrapping bug: the build process no longer assumes
4078 that the various BOOLE-related constants have the same value in
4079 host and target lisps. (noted by Paul Dietz' test suite on an
4080 SBCL binary built from CLISP)
4081 * The system can now be dynamically linked on the MIPS platform,
4082 which enables dynamic loading of foreign code from Lisp. (thanks
4083 to Ralf Baechle for discussions on the MIPS ABI)
4084 * The system now records debugging information for its own source
4085 files in a filesystem-position-independent manner, relative to
4086 the "SYS" logical host.
4087 * fixed a compiler bug: MV-LET convertion did not check references
4088 to the "max args" entry point. (reported by Brian Downing)
4089 * tweaked disassembly notes to be less confident about proclaiming
4090 some instruction as an LRA. (thanks to Brian Downing)
4091 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4092 now each have their own history, command character, and other
4093 characteristics. (thanks to David Lichteblau)
4094 * fixed some bugs revealed by Paul Dietz' test suite:
4095 ** compiler failure in compiling LOGAND expressions including a
4097 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4098 shift greater than 32.
4099 ** FLUSH-DEST did not mark blocks for type check regeneration.
4100 ** HANDLER-CASE failed to accept declarations in handler clauses
4101 in some circumstances.
4103 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4104 * New code in contrib/sb-introspect (still probably not entirely
4105 stable yet) provides some support for smart Lisp development
4106 environments like SLIME.
4107 * The conditions signalled for errors occurring when loading .fasl
4108 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4109 in a way which should help ASDF recover gracefully.
4110 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4111 stuff has been cleaned up. If you code contrib/ stuff, this might
4112 affect you, and you can look at contrib/README, contrib/STANDARDS,
4113 and/or the 0.8.4.27 diff to check.
4114 * In full calls the compiler now does not generate checks for declared
4115 argument types for all arguments.
4116 * various threading fixes
4117 ** and some experimental patches which didn't make it into
4118 the main tree for this release, but which are shipped in
4119 contrib/experimental-thread.patch as a possible fix for some
4120 failures (deadlock, spinning...) in GC-intensive multithreaded
4122 * fixed PPC build problem (source code incompatibility of different
4123 library versions): added offsetof() hackery which attempts to divine
4124 where glibc maintainers put uc_mcontext today
4125 * fixed bug 282: compiler does not trust type assertions while passing
4126 arguments to a full call.
4127 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4128 &OPTIONAL VALUES type parameter.
4129 * fix bug 214: algorithm for noting rejected templates is now more
4130 similar to that of template seletion. (also reported by rydis on
4132 * fixed bug 141b: printing backquoted information readably and prettily
4133 inserts a space where necessary.
4134 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4135 (CHARACTER 10) are now reported as errors, rather than propagated
4136 as unknown types. (reported by piso on #lisp)
4137 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4138 with values NIL and :ERROR. (thanks to Milan Zamazal)
4139 * fixed bug 191c: CLOS now does proper keyword argument checking as
4140 described in CLHS 7.6.5 and 7.6.5.1.
4141 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4142 longer raise an error; further, using a list as a for-as-arithmetic
4143 counter now raises a meaningful error.
4144 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4145 now understood by sequence creation functions such as MAKE-SEQUENCE
4147 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4148 a STRING-INPUT-STREAM.
4149 * compiler enhancement: SIGNUM is now better able to derive the type
4151 * type declarations inside WITH-SLOTS are checked. (reported by
4153 * fixed some bugs revealed by Paul Dietz' test suite:
4154 ** incorrect optimization of TRUNCATE for a positive first
4155 argument and negative second.
4156 ** compiler failure in let-convertion during flushing dead code.
4157 ** compiler failure while deriving type of TRUNCATE on an
4158 interval, containing 0.
4159 ** ASH of a negative bignum by a negative bignum count now returns
4161 ** intersection of CONS types now canonicalizes properly, fixing
4162 inconsistencies in SUBTYPEP.
4164 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4165 * incompatible change: The --disable-debugger command line
4166 option now clobbers the debugger at a more fundamental
4167 level, by redefining #'INVOKE-DEBUGGER instead of by
4168 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4169 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4170 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4171 enter the debugger REPL and then suffer recursive errors
4172 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4173 while under the new system, BREAK in --disable-debugger mode
4174 terminates the system just as an unhandled error would.
4175 * fixed compiler performance when processing loops with a step >1;
4176 * bug fix: DOCUMENTATION now retrieves generic function
4177 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4178 support has been systematized, and now supports the methods
4179 specified by ANSI, along with a default method and a method for
4180 slot documentation. (reported by Nathan Froyd)
4181 * bug fix: effective methods associated with a generic function are
4182 no longer cached over a change of that generic function's method
4183 combination. (reported by Andreas Fuchs)
4184 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4185 names a non-existent directory. (thanks to Andreas Fuchs)
4186 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4187 the PPC platform, lead to stack corruption; this has been fixed.
4188 (reported by Rainer Joswig)
4189 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4190 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4191 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4192 arithmetic in general, is now much more reliable on the PPC
4194 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4195 platform now returns the right answer.
4196 * optimization: restored some effective method precomputation in
4197 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4198 precomputation is now tunable.
4199 * optimization: compiler-internal data structure use has been
4200 reviewed, and changes have been made that should improve the
4201 performance of the compiler by about 20%.
4202 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4203 simple-base-strings and simple-bit-vectors is improved.
4204 * optimization: the optimization of 32-bit logical and arithmetic
4205 functions introduced in version 0.8.3 on the x86 has been
4206 implemented on the mips, ppc and sparc platforms; an
4207 implementation of the same facility, but for 64-bit arithmetic,
4208 has been added for the alpha.
4209 * microoptimization: the compiler is better able to make use of the
4210 x86 LEA instruction for multiplication by constants.
4211 * bug fix: in some situations compiler did not report usage of
4212 generic arithmetic in (SPEED 3) policy.
4213 * bug 145b fix: compiler used wrong type specifier while converting
4214 MEMBER-types to numeric.
4215 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4217 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4218 index argument now works properly on the Alpha platform.
4219 * bug fix: floating point exception treatment on the Alpha platform
4221 * bug fix: FILE-POSITION works much better on string input and
4222 output streams. (thanks to Nikodemus Siivola)
4223 * bug fix: many threading/garbage collection symptoms sorted.
4224 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4225 might be pseudo-atomic.
4226 * internal change: Stopping for GC is now done with signals not
4227 ptrace. GC is now done in whichever thread wanted it, instead of
4229 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4231 * bug fix: result form in DO is not contained in the implicit
4233 * incompatible change: ICR structure is changed; the value part of
4234 CONTINUATION is now called LVAR; corresponding functions are
4235 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4236 * added type deriver for ISQRT (thanks to Robert E. Brown).
4237 * bug fix: better support for loading from the command line when an
4238 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4240 * fixed some bugs revealed by Paul Dietz' test suite:
4241 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4242 ** ROUND and FROUND now give the right answer when given very
4243 small float arguments.
4244 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4246 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4247 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4248 ** LCM should return a non-negative integer.
4249 ** PARSE-INTEGER returned the index of a terminator instead of the
4250 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4251 ** PARSE-INTEGER returned an incorrect index being applied to a
4253 ** LCM with two arguments of 0 returns 0 rather than signalling
4255 ** unsigned addition of a 32-bit constant with the high bit set no
4256 longer causes an internal compiler error on the x86.
4257 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4258 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4259 with negative last argument.
4260 ** byte specifiers with zero size and position no longer cause
4261 an error during type derivation.
4262 ** bignum multiplication on the Alpha platform now returns the
4264 * porting: The system now builds on SuSE AMD64, although it still
4265 generates a 32-bit binary.
4266 * .fasl file incompatibility: The fasl file version number has
4267 been incremented (because of the changes to internal compiler
4268 data structures referred to above).
4270 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4271 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4272 more accurately, on the Darwin kernel running on PowerPC hardware.
4273 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4274 * Compiler code deletion notes now signal a condition of type
4275 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4276 an associated MUFFLE-WARNING restart.
4277 * The compiler now performs limited argument count validation of
4278 constant format strings in FORMAT, and where appropriate in ERROR,
4279 CERROR and WARN. (thanks to Gerd Moellmann)
4280 * New ASDF-INSTALL contrib can be used for automatic download and
4281 installation of third-party Lisp code from CCLAN or other sites
4283 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4284 which forces another thread to execute a function supplied by the
4286 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4287 now accept and act upon their :ELEMENT-TYPE keyword argument.
4288 (reported by Martin Atzmueller, Edi Weitz)
4289 * bug fix: FILE-POSITION now accepts position designators up to
4290 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4291 is the greater. (thanks to Patrik Nordebo)
4292 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4293 Kalle Olavi Niemitalo)
4294 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4295 printable. (reported by Eric Marsden)
4296 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4297 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4298 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4299 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4300 (thanks to Stig Sandoe)
4301 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4302 UNREAD-CHAR now correctly includes the unread character in the
4303 target sequence. (thanks to Gerd Moellmann)
4304 * bug fix in threaded builds: the system can now be suspended and
4305 resumed by shell job control with minimal disruption.
4306 * bug fixes in times and timezones >2038AD
4307 * better handling of "where is GNU make?" problem in build scripts
4308 (thanks to Nikodemus Siivola)
4309 * new optimization: inside a named function any reference to a
4310 function with the same name is considered to be a self-reference;
4311 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4312 optimization quality.
4313 * new optimization on x86: logical functions and + now have
4314 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4315 used when the result is truncated to 32 bits.
4316 * VALUES declaration is partially enabled.
4317 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4318 * fixed some bugs revealed by Paul Dietz' test suite:
4319 ** The system now obeys the constraint imposed by
4320 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4321 types form a lattice under type intersection.
4322 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4323 ** ASSOC now ignores NIL elements in an alist.
4324 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4325 and (1+ MOST-POSITIVE-FIXNUM) answers.
4326 ** The addition of a method with invalid qualifiers to a generic
4327 function does not cause an error to be signalled immediately;
4328 a warning is signalled, and the error is generated only on
4329 calling the generic function.
4330 * changed .fasl file version number, in part to add type codes for
4331 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4332 obscure ANSI requirements
4334 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4335 * fixed bug 148: failure to inline-expand a local function left
4336 garbage, confusing the compiler.
4337 * fixed bugs 3cd: structure slot readers perform type check if the
4338 slot can have an invalid value (i.e. it is either not initialized
4339 or can be written with a less specific slot writer).
4340 * bug fix: the compiler now traps array references to elements off
4341 the end of an array; previously, the bounds checking in some
4342 circumstances could go off-by-one.
4343 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4345 * type declarations for array element types now obey the description
4346 on the CLHS page "Declaration TYPE", as per discussions on
4347 sbcl-help around 2003-05-08. This means that a declaration
4348 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4349 declaration, all references to BAR will be asserted or assumed
4350 (with THE, so dependent on compiler policy) to involve objects of
4351 type FOO. Note that no such declaration is implied in
4352 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4353 * declared types of functions from the "Conditions"
4354 chapter. (reported by Paul Dietz)
4355 * bug fix: CERROR accepts a function as its first argument.
4356 * bug fix: NTH an NTHCDR accept a bignum as index
4357 arguments. (reported by Adam Warner)
4358 * optimization: character compare routines now optimize comparing
4359 against a constant character. (reported by Gilbert Baumann)
4360 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4361 argument now works properly on the MIPS platform.
4362 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4363 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4364 declared to have a functional type, does not cause an error
4366 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4367 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4368 * fixed bug: if last continuation of a deleted block has a
4369 destination, this destination should be deleted too. (reported by
4371 * fixed a bug in the bootstrap process: the host compiler's values
4372 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4373 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4374 test case from Patrik Nordebo)
4375 * improved the ability of the disassembler on the PPC platform to
4376 provide helpful disassembly notes.
4377 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4378 the class in more cases than previously.
4379 * bug fix: FILE-POSITION now understands :START and :END for
4380 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4381 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4382 8) data. (thanks to David Lichteblau)
4383 * bug fix: it is possible to add a method to a generic function
4384 without lambda list.
4385 * bug fix: reader failed to signal END-OF-FILE inside an
4386 object representation. (reported by Nikodemus Siivola)
4387 * fixed some bugs revealed by Paul Dietz' test suite:
4388 ** LAST and [N]BUTLAST should accept a bignum.
4389 ** condition slot accessors are methods.
4390 ** (VECTOR NIL) is a subtype of STRING.
4392 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4393 * minor incompatible change: some nonsensical specialized lambda
4394 lists (used in DEFMETHOD) which were previously ignored now signal
4396 * minor incompatible change: the system is now aware of the types of
4397 variables in the COMMON-LISP package, and will signal errors for
4398 most violations of these type constraints (where previously they
4399 were silently accepted).
4400 * minor incompatible change: COMPILE-FILE now uses the freedom
4401 afforded (ANSI 3.2.2.3) to use derived function types for
4402 functions defined in the same file. This also permits the system
4403 to warn on static type mismatches and function
4404 redefinition. (Currently it does not work with high DEBUG level.)
4405 * minor incompatible change: VALUES declaration is disabled.
4406 * When issuing notes, the compiler now signals a condition of type
4407 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4408 restart for use in user handlers. It is expected that the
4409 COMPILER-NOTE condition will eventually become a condition
4410 supertype to a hierarchy of note types, which will then be
4411 handleable in a similar fashion. However, at the moment, no such
4412 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4413 but it's an implementation detail, not a classification for the
4415 * Changes in type checking closed the following bugs:
4416 ** type checking of unused values (192b, 194d, 203);
4417 ** template selection based on unsafe type assertions (192c, 236);
4418 ** type checking in branches (194bc).
4419 * A short form of VALUES type specifier has ANSI meaning (it has
4420 increased the number of situations when SBCL cannot perform type
4422 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4423 keywords or constants is permissible.
4424 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4425 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4426 classes. (thanks to Antonio Martinez)
4427 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4428 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4429 argument to a pretty-print stream. Instead, it leaves any such
4430 operations to DESCRIBE-OBJECT methods.
4431 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4433 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4434 lambda lists. (thanks to David Lichteblau)
4435 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4436 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4437 (thanks to Gerd Moellmann)
4438 * fixed bug 246: increased compilation speed of long
4439 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4441 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4443 * DEFCONSTANT now throws a condition of type
4444 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4445 constant to a non-EQL value; CONTINUE and ABORT restarts
4446 respectively change and preserve the value.
4447 * fixed bug 63: The code walker, part of the implementation of CLOS,
4448 is now better at handling symbol macros.
4449 * bug fix: There is no longer an internal implementation type named
4450 CL:LENGTH. (reported by Raymond Toy)
4451 * bug fix: In macro-like defining macros/special operators the
4452 implicit block does not enclose the lambda list.
4453 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4454 enclosed in parentheses) are not suitable as type specifiers, and
4455 their use properly signals an error now.
4456 * bug fix: An argument count mismatch for a type specifier in code
4457 being compiled no longer causes an unhandled error at compile
4458 time, but signals a compile-time warning.
4459 * fixed simple vector readable printing
4460 * bug fix: DESCRIBE takes more care over whether the class
4461 precedence list slot of a class is bound before accessing it.
4462 (reported by Markus Krummenacker)
4463 * bug fix: FORMATTER can successfully compile pretty-printer format
4464 strings which use variants of the ~* directive inside.
4465 * bug fix: SEARCH now applies its TEST predicate to the elements of
4466 the arguments in the correct order. (thanks to Wolfhard Buss)
4467 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4468 in type inference. (thanks to Robert E. Brown)
4469 * bug fix: Reading in symbols with an explicit package name of ""
4470 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4471 * fixed some bugs revealed by Paul Dietz' test suite:
4472 ** NIL is now allowed as a structure slot name.
4473 ** Arbitrary numbers, not just REALs, are allowed in certain
4474 circumstances in LOOP for-as-arithmetic clauses.
4475 ** Multiple class redefinitions before slot access no longer
4476 causes a type error.
4477 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4478 association between the name and a class.
4479 ** Generic functions with non-standard method-combination and over
4480 five methods all of which return constants no longer return NIL
4481 after the first few invocations. (thanks to Gerd Moellmann)
4482 ** CALL-NEXT-METHOD with no arguments now passes the original
4483 values of the arguments, even in the presence of assignment.
4484 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4486 ** DISASSEMBLE works with closures and funcallable instances.
4487 ** ADD-METHOD now returns the generic function, not the new method.
4488 ** FIND-METHOD signals an error if the lengths of the specializers
4489 is incompatible with the generic function, even if the ERRORP
4491 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4492 which its argument is a member.
4493 ** DEFCLASS only redefines the class named by its class-name
4494 argument if that name is the proper name of the class;
4495 otherwise, it creates a new class.
4496 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4497 of the UNBOUND-SLOT condition to the name of the slot.
4498 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4499 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4500 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4501 SLOT-MAKUNBOUND in the specified fashion.
4503 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4504 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4505 cross-compilation host. As a consequence, we can now bootstrap our
4506 way up to SBCL starting with a bare gcc toolchain and human-readable
4507 source code (first the source to CLISP, then the source to SBCL).
4508 * A contributed module containing a partial implementation of the
4509 simple-streams interface has been included. (thanks to Rudi
4511 * A contributed module implementing the RFC1321 Message Digest
4512 Algorithm, known as MD5, has been included.
4513 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4514 no longer has any effect, as the code controlled by this feature
4515 has been deleted. (As far as we know, no-one has ever built using
4516 this feature, and its semantics were confused in any case).
4517 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4518 work on conditions (as required by the ANSI specification),
4519 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4520 expected behaviour on conditions. Users should note, however,
4521 that such behaviour is not required by the ANSI specification,
4522 and so use of this behaviour may render their code unportable.
4523 * fixed some bugs revealed by Paul Dietz' test suite:
4524 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4526 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4527 ** SXHASH on condition objects no longer returns NIL.
4528 ** :ALLOCATION :CLASS slots are better treated; their values are
4529 updated on class redefinition, and initforms inherited from
4530 superclasses are applied.
4531 ** REMOVE-METHOD returns its generic function argument even when
4532 no method was removed.
4533 ** SHARED-INITIALIZE now initializes the values of the requested
4534 slots, including those with :ALLOCATION :CLASS.
4535 ** ALLOCATE-INSTANCE now works on structure classes defined via
4536 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4538 ** SLOT-EXISTS-P now works on conditions, as well as structures
4540 ** MAKE-LOAD-FORM now has the required methods on
4541 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4542 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4543 keyword, and now implements the SLOT-NAMES argument.
4544 ** methods with &OPTIONAL arguments no longer allow too many
4545 arguments to be passed in the call without error.
4546 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4547 option is consistent with the required arguments of the generic
4548 function lambda list.
4549 * bug fix: REQUIRE accepts a string designator. (Thanks to
4551 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4552 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4553 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4554 * bug fix: The compiler now checks for duplicated variables in macro
4556 * bug fix: SETQ on globals returns the correct value.
4557 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4558 not a COMPILER-ERROR (followed by some other strange error on
4559 choosing the CONTINUE restart).
4560 * bug fix: make.sh and friends are now more consistent in the way that
4561 they look for GNU "make".
4563 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4564 * experimental native threads support (on x86 Linux >=2.4 only).
4565 This is not compiled in by default: you need to add :SB-THREAD to
4566 the target features. See the "Beyond ANSI" chapter of the manual
4568 * fix for longstanding nonANSIism: The old distinction between
4569 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4570 The return value from CL:FIND-CLASS is now a CLOS class, and
4571 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4572 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4573 * An interface to the MetaObject Protocol, as described in Kiczales,
4574 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4575 MIT Press, 1991, is available from the SB-MOP package.
4576 * incompatible change: the SB-PCL package should now be considered
4577 a private implementation detail, and no longer a semi-private MOP
4579 * minor incompatible change: due to rearrangement for threads, the
4580 control stack and binding stack are now allocated at arbitrary
4581 addresses instead of being hardcoded per-port. Users affected by
4582 this probably have to be doing advanced things with shared
4583 libraries, and will know who they are.
4584 * minor incompatible change: Previously, all --eval forms used were
4585 processed with READ before any of them were processed with EVAL.
4586 Now each --eval form is processed with both READ and EVAL before
4587 the next --eval form is processed. (Thus package operations like
4588 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4589 work as the user might reasonably expect.)
4590 * minor incompatible change: *STANDARD-INPUT* is now only an
4591 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4593 * minor incompatible change: Y-OR-N-P is now character-oriented,
4594 not line oriented. Also, YES-OR-NO-P now works without errors.
4595 (thanks to Antonio Martinez)
4596 * sb-aclrepl module improvements: an integrated inspector, added
4597 repl features, and a bug fix to :trace command.
4598 * Known functions, which cannot be open coded by the backend, are
4599 considered to be able to check types of their arguments. (fixing
4600 a bug report by Nathan J. Froyd)
4601 * fixed a bug in computing method discriminating functions: It is
4602 now possible to define methods specialized on classes which have
4603 forward-referenced superclasses. (thanks to Gerd Moellmann)
4604 * fixed evaluation order in optional entries (reported by Gilbert
4606 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4607 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4608 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4609 required-by-AMOP NAME argument, as well as CLASS and
4610 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4611 * fixed bug 20: DEFMETHOD can define methods using names that are
4612 not the proper names of classes to designate class specializers.
4613 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4614 Unix file descriptors, instead of blowing up. (thanks to Antonio
4616 * Garbage collection refactoring: user-visible change is that a
4617 call to the GC function during WITHOUT-GCING will not do garbage
4618 collection until the end of the WITHOUT-GCING. If you were doing
4619 this you were probably losing anyway.
4620 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4621 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4622 TYPEP the latter but not the former.
4623 * The compiler issues a full WARNING for calls to undefined functions
4624 with names from the CL package.
4625 * MAP-INTO for a vector destination is open coded. (reported by
4626 Brian Downing on c.l.l)
4627 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4628 documentation string.
4629 * fixed some bugs revealed by Paul Dietz' test suite:
4630 ** COPY-ALIST now signals an error if its argument is a dotted
4632 ** Condition slots are now accessed more correctly in the presence
4633 of multiple initargs for a given slot.
4634 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4635 exclude restarts of the same name associated with a different
4637 ** DEFCLASS of forward-referenced classes with another
4638 forward-referenced class in the superclasses list no longer
4640 ** Condition slots are now initialized once each, not multiple
4641 times. (thanks to Gerd Moellmann)
4642 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4644 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4645 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4646 arguments contain duplicated elements.
4647 ** RESTART-CASE understands local macros.
4648 ** RESTART-CASE associates exactly its own restarts with a condition.
4649 ** ENDP in safe mode checks its argument to be of type LIST.
4650 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4651 in question is unbound.
4652 ** Optimized MAKE-INSTANCE functions no longer cause internal
4653 assertion failures in the presence of duplicate initargs.
4654 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4655 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4656 propagated even in the ctor optimized implementation of
4658 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4660 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4661 * a better implementation of SXHASH on (simple) bit vectors,
4662 measured both in execution speed and in distribution of results
4663 over the positive fixnums, has been installed. Likewise, a better
4664 implementation of EQUAL for simple bit vectors is now available.
4665 * fixed CEILING optimization for a divisor of form 2^k.
4666 * fixed bug 240 (emitting extra style warnings "using the lexical
4667 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4668 by Antonio Martinez)
4669 * fixed SXHASH, giving different results for NIL depending on type
4670 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4671 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4672 variable. (found by Rolf Wester)
4673 * SBCL does not ignore type declarations for special
4674 variables. (reported by rif on c.l.l 2003-03-05)
4675 * some bug fixes in contrib/sb-aclrepl/
4676 * fixed some bugs revealed by Paul Dietz' test suite:
4677 ** a bug in the CONS type specifier, whereby the CAR and CDR
4678 types got intertwined, has been fixed;
4679 ** the type system is now able to reason about the interaction
4680 between INTEGER and RATIO types more completely;
4681 ** APPEND, [N]REVERSE and NRECONC check that those their
4682 arguments, which must be proper lists, are really so;
4683 ** An array specialized to be unable to hold elements has been
4684 implemented, as required -- yes, really -- by ANSI;
4685 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4686 on malformed property lists;
4688 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4689 * incompatible packaging change: in line with Unix convention,
4690 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4691 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4692 * REQUIRE and PROVIDE are now optionally capable of doing something
4693 useful. See the documentation string for REQUIRE.
4694 * infrastructure for a managed SBCL contrib system: contributed
4695 modules in this release include:
4696 ** the ASDF system definition facility;
4697 ** an interface to the BSD Sockets API;
4698 ** an ACL-like convenience interface to the repl;
4699 (thanks to Kevin Rosenberg)
4700 ** an implementation of ROTATE-BYTE, with efficient implementation
4702 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4703 gives a closer approximation to the right answer than previously.
4704 (thanks to Raymond Toy)
4705 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4706 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4707 optional environment arguments, as required by ANSI.
4708 * fixed bugs in other functions taking environment objects, allowing
4709 calls with an explicit NIL environment argument to be compiled
4711 * fixed bug 228: primary return values from
4712 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4713 COMPILE or FUNCTION.
4714 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4715 :TYPE will no longer signal errors on innocuous objects.
4716 * fixed bug 231b: SETQ is better at respecting type declarations in
4717 the lexical environment.
4718 * fixed a bug in DEFCLASS: classes named by symbols with no or
4719 unprintable packages can now be defined.
4720 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4721 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4722 * fixed compiler failure related to checking types of functions.
4723 (reported by Robert E. Brown)
4724 * the compiler is now much more consistent in its error-checking
4725 treatment of bounding index arguments to sequence functions: in
4726 (SAFETY 3) code, errors will be signalled in almost all cases if
4727 invalid sequence bounding indices are passed to functions defined
4728 by ANSI to operate on sequences.
4729 * fixed a bug in the build procedure: documentation of SBCL-specific
4730 packages is now preserved and available in the final Lisp image.
4731 * lifted FDEFINITION lookup out of loops in the implementation of
4732 many list operations. (thanks to Robert E. Brown)
4733 * fixed a bug in the reader: the #n# reader macro now works for
4734 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4735 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4736 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4737 E. Brown and Tony Martinez respectively)
4738 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4739 SLOT-BOUNDP: in particular, it is now able to optimize them much
4740 better, and is now not vulnerable to having packages renamed.
4741 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4742 always called when a slot is not present in an instance. (thanks
4744 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4745 longer signal an error on unreading a character following EOF on
4746 the previous constituent stream. (thanks to Tony Martinez)
4747 * fixed some bugs revealed by Paul Dietz' test suite:
4748 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4749 not just nonnegative fixnums;
4750 ** the logical bit-array operators such as BIT-AND now accept an
4751 explicit NIL for their "opt-arg" argument (to indicate a
4752 freshly-consed result bit-array);
4753 ** ELT now signals an error on an invalid sequence index in safe
4755 ** the type system is now cleverer about negations of numeric
4756 types, and consequently understands the BIGNUM and RATIO types
4758 ** the type system is now cleverer about the interaction between
4759 INTEGER and RATIO types: while bugs still remain, many more
4760 cases are accurately computed;
4761 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4762 if it is in the last clause;
4763 ** CONSTANTLY now correctly returns a side-effect-free function in
4765 ** DECLARE is no longer treated as a special-operator; in
4766 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4767 * incremented fasl file version number due to the change in the
4768 DEFSTRUCT-SLOT-DESCRIPTION structure.
4770 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4771 * minor incompatible change: code processed by the "interpreter" or
4772 EVAL now has a compilation optimization policy of (DEBUG 2)
4773 (changed from (DEBUG 1)) to improve debuggability of interactive
4774 development, and to allow the use of the debug RETURN command in
4776 * an experimental implementation of the RETURN command for the
4777 debugger has been included. (thanks to Frederik Kuivinen)
4778 * fixed bug 62: constraints were not propagated into a loop.
4779 * fixed bug in embedded calls of SORT (reported and investigated by
4781 * fixed some bugs revealed by Paul Dietz' test suite:
4782 ** printing and reading of arrays with some dimensions having
4783 length 0 (thanks to Gerd Moellmann);
4784 ** BOA constructor with &AUX argument without a default value does
4785 not cause a type error;
4786 ** CONSTANTP now returns true for all self-evaluating objects.
4788 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4789 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4790 accessors that are related by inheritance, as specified in the
4791 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4792 Valtteri Vuorikoski)
4793 * The compiler is now able to inline functions that were defined in
4794 a complex lexical environment (e.g. inside a MACROLET).
4795 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4797 * Support for the upcoming FreeBSD-5.0 release has been included.
4798 (thanks to Dag-Erling Smorgrav)
4799 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4800 effect when it is not in a toplevel context.
4801 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4802 stand a better chance of being correct. (thanks to Gerd
4804 * fixed bug in COERCE, which now signals an error on coercing a
4805 rational to a bounded real type which excludes the expected
4807 * The compiler is now able to derive types more accurately from the
4808 COERCE and COMPILE functions.
4809 * fixed bug 223: functional binding is considered to be constant
4810 only for symbols in the CL package.
4811 * fixed bug 231: SETQ did not check the type of a variable being set
4812 (reported by Robert E. Brown)
4813 * A new optimization for MAKE-INSTANCE has been included, fixing
4814 various bugs (including relating to :ALLOCATION :CLASS slots and
4815 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4817 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4818 ** As required by ANSI, LOOP now disallows anonymous collection
4819 clauses such as COLLECT I in conjunction with aggregate boolean
4820 clauses such as THEREIS (= I 1);
4821 ** LOOP now signals an error when any variable is reused in the
4822 same loop (including the potentially useful construct analogous
4823 to WITH A = 1 WITH A = (1+ A);
4824 ** IT is only a special loop symbol within the first clause of a
4825 conditional loop clause;
4826 ** LOOP with a typed iteration variable over a hashtable now
4827 signals a type error iff it should.
4828 * fixed some other bugs revealed by Paul Dietz' test suite:
4829 ** FILE-STREAM now names the class previously known as FD-STREAM;
4830 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4831 argument) no longer signals an error;
4832 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4833 of the slot symbol, rather than using the current package
4834 ((:CONC-NAME "") continues to intern the slot's name in the
4836 * incremented fasl file version number, because of the incompatible
4837 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4838 of the new implementation of DEFINE-COMPILER-MACRO.
4840 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4841 * Support for building SBCL for MIPS platforms running in
4842 little-endian mode has now been checked in, and basic
4843 functionality on said platforms verified.
4844 * minor incompatible change: PCL now records the pathname of a file
4845 in which methods and the like are defined, rather than its
4847 * minor incompatible change: TRUENAME now considers the truename of
4848 a file naming a directory to be the pathname with :DIRECTORY
4849 component indicating that directory.
4850 * minor incompatible change: a NAMED clause in the extended form of
4851 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4852 reason for the previous behaviour is unclear.
4853 * more systematization and improvement of CLOS and MOP conformance
4854 in PCL (thanks to Gerd Moellman and Pierre Mai):
4855 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4857 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4858 primary methods with no specializers;
4859 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4861 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4862 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4863 FORWARD-REFERENCED-CLASSes; error reporting on
4864 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4866 ** SXHASH on CLOS instances now uses a slot internal to the
4867 instance to return different numbers on distinct instances,
4868 while preserving the same return value through invocations of
4870 ** DEFMETHOD signals errors when methods with longer incongruent
4871 lambda lists are added to generic functions;
4872 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4873 CLASS, as specified in AMOP;
4874 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4875 on the order returned by the primary method for classes of
4876 class STANDARD-CLASS;
4877 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4878 * fixed some bugs shown by Paul Dietz' test suite:
4879 ** DOLIST puts its body in TAGBODY;
4880 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4882 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4883 value producing form;
4884 ** if more variables are given to PROGV than values, extra
4885 variables are bound and made to have no value;
4886 ** NSUBSTITUTE on list arguments gets the right answer with
4888 ** ELT signals an error of type TYPE-ERROR when the index argument
4889 is not a valid sequence index;
4890 ** LOOP signals (at macroexpansion time) an error of type
4891 PROGRAM-ERROR when duplicate variable names are found;
4892 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4893 ** FUNCALL of special-operators now cause an error of type
4895 ** PSETQ now works as required in the presence of side-effecting
4896 symbol-macro places;
4897 ** NCONC accepts any object as its last argument;
4898 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4900 ** loop-for-as-package does not require a package to be explicitely
4902 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4904 * fixed bug 166: compiler preserves "there is a way to go"
4905 invariant when deleting code.
4906 * fixed bug 172: macro lambda lists with required arguments after
4907 &REST arguments now cause an error to be signalled. (thanks to
4909 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4910 bug. (thanks to Matthew Danish)
4911 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4913 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4914 arguments are lexically rebound. (thanks to Gerd Moellmann and
4916 * fixed bug 194: error messages are now more informative when there
4917 is no primary method applicable in a call to a generic
4918 function. (thanks to Gerd Moellmann)
4919 * fixed bug in command line argument checking (thanks to Julian
4921 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4922 (thanks to Matthew Danish)
4923 * incremented fasl file version number, because of the
4924 SXHASH-related changes in the layout of CLOS data structures
4926 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4927 * minor incompatible change: The runtime (the Unix executable named
4928 "sbcl") is now much pickier about the .core files it will load.
4929 Essentially it now requires .core files to descend from the same
4930 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4931 as the runtime does. (The intent is to prevent the crashes which
4932 can occur, and which can even be reported as mysterious failures,
4933 when people patch the sources or change the build parameters
4934 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4935 sbcl and .core files.)
4936 * fixed bug: VALUES-LIST is no longer optimized away.
4937 * fixed bug 142: The FFI conversion of C string values to Lisp
4938 string values no longer conses excessively. (thanks to Nathan
4939 Froyd porting Raymond Toy's fix to CMU CL)
4940 * began to systematize and improve MOP conformance in PCL (thanks to
4941 Nathan Froyd, Gerd Moellman and Pierre Mai):
4942 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4944 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4945 ** FINALIZE-INHERITANCE is now called on class finalization;
4946 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4947 argument precedence order.
4948 * fixed bug 202: The compiler no longer fails on functions whose
4949 derived types contradict their declared type.
4950 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4951 so it can be non-toplevel.
4952 * The fasl file version number has changed (because of the new
4953 implementation of DEFMACRO).
4954 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4955 safe code, that any length requirement by their type-specifier
4956 argument is valid. The exceptions to this are described in bug
4958 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4959 functions now check the types of their inputs as required by ANSI.
4960 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4961 introduced symbol is DECLAREd to be SPECIAL.
4962 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4963 * fixed bug: :COUNT argument to sequence functions may be negative
4964 * fixed bug: body of DO-SYMBOLS may contain declarations
4965 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4966 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4967 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4968 symbol macro only once
4969 * fixed printing of call frame when argument list is unavailable
4970 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4971 * compiler no longer signals WARNING on unknown keyword
4974 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4975 * A beta-quality port to the mips architecture running Linux,
4976 based on the old CMUCL backend, has been made. It has been tested
4977 on a big-endian kernel, and works sufficiently well to be able to
4978 rebuild itself; it has not been tested in little-endian mode.
4979 * fixed an inconsistency between gencgc.c and purify.c which made
4980 dumping/loading .core files unreliable
4981 * fixed bug 120a: The compiler now deals correctly with IFs where
4982 the consequent is the same as the alternative, instead of
4983 misderiving the return type. (thanks to Alexey Dejneka)
4984 * fixed bug 113: Logical pathnames are now dumpable (the logical
4985 host is resolved at load-time, throwing an error if it is not
4987 * fixed bug 174: FORMAT's error message is slightly clearer when a
4988 non-printing character is used in a format directive.
4989 * fixed several bugs in compiler checking of type declarations, i.e.
4990 violations of the Python "declarations are assertions" principle
4991 (thanks to Alexey Dejneka)
4992 * fixed several bugs in PCL's error checking (thanks to Gerd
4994 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4996 * fixed bug in compilation of functions as first class values
4997 (thanks to Antonio Martinez-Shotton)
4998 * The compiler's handling TYPE-ERRORs which it can prove will
4999 inevitably happen at runtime has been cleaned up and corrected
5000 in several ways. (thanks to Alexey Dejneka)
5001 * improved argument type checking for various basic arithmetic
5002 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5003 lavished on them in the past that they can be compiled in many
5004 ways in different special cases
5005 * fixed bug 181: compiler checks validity of user supplied type
5007 * cleaned up code flushing in optimization: Function calls which
5008 should signal errors for safety purposes (e.g. which ANSI says
5009 should signal errors when their arguments are of incorrect type)
5010 are no longer optimized away.
5011 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5012 * incremented fasl file version number, because changes in the
5013 implementation of sequence functions like COERCE caused
5014 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5015 in old inline expansions) to become undefined. (Actually these
5016 changes were later undone, so we might very well be binary
5017 compatible with 0.7.7 after all, but leaving the version number
5018 incremented seemed like the simplest and most conservative
5021 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5022 * An alpha-quality port to the parisc architecture running Linux,
5023 based on the old CMUCL backend, has been made. This, even more so
5024 than the other backends, should be considered still a work in
5025 progress; known problems include that the Linux kernel in 64-bit
5026 mode does not propagate the correct sigcontext structure to
5027 userspace, and consequently SBCL on a parisc64 kernel will not
5029 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5030 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5031 suppressed.) Also now that the compiler is looking at declarations
5032 in the environment, it checks optimization declarations as well,
5033 and suppresses inlining when (> DEBUG SPEED).
5034 * More fixes have been made to treatment of floating point exception
5035 treatment and other Unix signals. In particular, floating point
5036 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5037 * The detection and handling of control stack exhaustion (infinite
5038 or very deeply nested recursion) has changed. Stack exhaustion
5039 detection is now done by write-protecting pages at the OS level
5040 and applies at all optimization settings; when found, a
5041 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5042 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5043 be caught using IGNORE-ERRORS.
5044 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5045 correctly when transforming recursive LABELS functions to LETs.
5046 (thanks to Alexey Dejneka)
5047 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5048 that are names of constants or global variables.
5049 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5050 alien routines with docstrings.
5051 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5052 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5054 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5055 (thanks to Eric Marsden)
5056 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5057 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5058 * Bug fix: The SPARC backend can now compile functions involving
5059 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5060 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5061 to a functions expecting a PATHNAME-DESIGNATOR.
5062 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5063 lambda lists. (thanks to Alexey Dejneka)
5064 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5065 functions so that EXPORTing the name of the class doesn't cause
5066 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5067 to Antonio Martinez for reporting this)
5068 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5069 constant-folded without failing an assertion. (thanks to Einar
5070 Floystad Dorum for reporting this)
5071 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5072 types are now dealt with more correctly by the compiler.
5073 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5074 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5075 behaviour analogous to RENAME-FILE. This puts its behaviour more
5076 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5078 * The fasl file version number has changed again. (because of the
5079 bug fix involving the names of PCL MAKE-INSTANCE functions)
5081 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5082 * bug fix: Floating point exceptions are treated much more
5083 consistently on the x86/Linux and PPC/Linux platforms.
5084 * Array initialization with :INITIAL-ELEMENT is now much faster for
5085 cases when the compiler cannot open code the array creation, but
5086 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5087 array accesses have also seen a speed increase.
5088 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5089 specified. (This was at the root of some bad interactions between
5090 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5092 * bug fix: Internal error arguments for undefined functions are now
5093 computed correctly on the PPC/Linux platform.
5094 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5095 Raymond Toy's patch for CMU CL)
5096 * Support for the Solaris 9 operating environment has been included
5097 (thanks to Daniel Merritt)
5098 * A very ugly but hopefully complete draft of the missing FFI chapter
5099 of the manual has been created by reformatting the corresponding
5100 CMU CL manual chapter into (currently very ugly and incoherent)
5101 DocBook and bringing it up to date for SBCL behavior. Thus, the
5102 manual is now essentially complete, at least by my extreme
5103 once-and-only-once standards, whereby it's acceptable to refer to
5104 the doc strings of SB-EXT functions as the primary documentation.
5105 * The fasl file version number has changed again, due to cleanup of
5106 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5107 is no longer a static symbol.)
5109 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5110 * SBCL now builds with OpenMCL (version 0.12) as the
5111 cross-compilation host; also, more progress has been made toward
5112 bootstrapping under CLISP.
5113 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5115 * bug 158 fixed: The compiler can now deal with integer loop
5116 increments different from 1; fixing this turned out also to fix
5118 * bug 169 fixed: no more bogus warnings about using lexical bindings
5119 despite the presence of perfectly good SPECIAL declarations (thanks
5120 to David Lichteblau)
5121 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5122 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5123 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5125 * bug 180 fixed: Method combination specifications no longer ignore
5126 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5127 * bug fix: Structure type predicate functions now check their argument
5128 count as they should.
5129 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5130 correctly. (thanks to Pierre Mai)
5131 * minor incompatible change: The --noprogrammer option is deprecated
5132 in favor of the new --disable-debugger option, which is very similar.
5133 (The major difference is that it takes effect at a slightly different
5134 time at startup, causing handling of errors in --sysinit and
5135 --userinit files will be affected differently.) The
5136 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5137 been added to allow this functionality to be controlled from ordinary
5138 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5139 maintainers, who might want to run non-interactive scripts to
5140 build SBCL cores which will later be used interactively.)
5141 * minor incompatible change: The LOAD function no longer, when given
5142 a wild pathname to load, loads all files matching that pathname.
5143 Instead, an error of type FILE-ERROR is signalled.
5145 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5146 * bug 147 fixed: The compiler preserves its block link/count
5147 invariants more correctly now so that it doesn't crash. (thanks
5149 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5151 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5152 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5153 no-value-for-this-character as NIL (as specified by ANSI).
5154 * HOST-NAMESTRING on physical pathnames now returns a string that is
5155 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5156 (thanks to Christophe Rhodes)
5157 * The Alpha port handles icache flushing more correctly. (thanks to
5159 * More progress has been made toward bootstrapping under CLISP. (thanks
5160 to Christophe Rhodes)
5161 * The fasl file format has changed again, because dynamic loading
5162 on OpenBSD (which has non-ELF object files) motivated some cleanups
5163 in the way that foreign symbols are transformed and passed around.
5164 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5165 is no longer treated as whitespace by the reader, but instead as
5166 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5167 |A
\7fB|, instead of A as it used to.
5169 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5170 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5171 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5172 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5173 this as of 0.7.1.45, but was left out of the previous news section
5174 (thanks to Dan Barlow)
5175 * SBCL now runs on the Solaris operating system on SPARC architectures
5176 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5177 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5178 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5179 * SPARC backend cleanups, allowing builds of cores optimized for V8
5180 and V9 SPARCS, and also emission of code targeted to a particular
5181 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5183 * SBCL is closer to bootstrapping under CLISP, thanks to various
5184 fixes by Christophe Rhodes.
5185 * The fasl file format has changed again, to allow the compiler's
5186 INFO database to support symbol macros.
5187 * The user manual (in doc/) is formatted into HTML more nicely.
5188 (thanks to coreythomas)
5189 * The system is smarter about SUBTYPEP relationships, especially
5190 those involving NOT types (including types such as ATOM which are
5191 represented internally using NOT types). Thus SUBTYPEP is less
5192 likely to return (VALUES NIL NIL) in general, and in particular
5193 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5195 * The fasl file format has changed again, because the internal
5196 representation of types now includes a new slot to support the new
5197 SUBTYPEP-of-NOT-types logic.
5198 * (not a change in the main branch of SBCL, but a related prototype
5199 which can hopefully be merged into the main branch of SBCL in the
5200 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5201 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5202 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5203 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5204 dispatch macro character combinations. (thanks to Alexey Dejneka)
5205 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5206 that superficially look like logical namestrings correctly.
5207 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5209 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5210 default supplied-p) for &optional and &key arguments. (thanks to
5213 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5214 * incompatible change: The compiler is now less aggressive about
5215 tail call optimization, doing it only when (> SPACE DEBUG) or
5216 (> SPEED DEBUG). (This is an incompatible change because there are
5217 programs which relied on the old CMU-CL-style behavior to optimize
5218 away their unbounded recursion which will now die of stack overflow.)
5219 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5220 for non-GENCGC systems has been increased to 20M (since that
5221 seems much closer to the likely performance optimum for modern
5222 systems than the old 4M value was)
5223 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5224 and *DEBUG-PRINT-LEVEL*
5225 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5226 of CMU CL's support for SPARC, and various endianness and other
5227 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5228 * new syntactic sugar for the Unix command line: --load foo.bar is now
5229 an alternate notation for --eval '(load "foo.bar")'.
5231 ** The system now detects stack overflow and handles it gracefully,
5232 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5233 optimization settings. (This is a good thing in general, and
5234 its introduction in this version should be particularly timely
5235 for anyone whose code fails because of suppression of tail
5237 ** The system now hunts for the C variable "environ" in a more
5238 devious way, to avoid segfaults when the C library version differs
5239 between compile time and run time. (thanks to Christophe Rhodes)
5240 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5241 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5242 ** The compiler no longer issues bogus style warnings for undefined
5243 classes in the same source file as the DEFCLASSes which defined
5244 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5246 ** fixes in CONDITION class precedence list for undefined function
5247 errors (thanks to Alexei Dejneka)
5248 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5249 correctly. (thanks to Dan Barlow)
5250 ** portability fixes aiming at bootstrapping under CLISP (thanks
5251 to Dave McDonald and Christophe Rhodes)
5252 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5253 ** fixes in type translation and and type inference (thanks to
5255 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5256 ** various fixes in the new ports (thanks to Dan Barlow)
5257 * several changes related to debugging:
5258 ** suppression of tail recursion, as noted above
5259 ** stack overflow detection, as noted above
5260 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5261 is now the default. (For some time encapsulation has been more
5262 reliable than the breakpoint-based :ENCAPSULATE NIL
5263 implementation, at least on X86 systems; and I just noticed that
5264 encapsulation also seems closer to the spirit of the ANSI
5267 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5269 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5270 up properly again. (There was a packaging bug in 0.7.0 which
5271 left their definitions in SB-SYS::LOAD-FOREIGN and
5272 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5273 vital for most things which interface to C-level interfaces,
5274 like extensions working with sockets or databases or
5275 Perl-compatible regexes or whatever, and the need to fix
5276 this bug is the main reason that 0.7.1 was released so
5278 ** DEFGENERIC is now choosier about the methods it redefines, so that
5279 reLOADing a previously-LOADed file containing DEFGENERICs does
5280 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5281 cycle now works as it should. (thanks to Alexey Dejneka)
5282 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5283 fixed by Christophe Rhodes. (He actually submitted this patch
5284 months ago, and I delayed until after 0.7.0.)
5285 ** Bug 111 (internal compiler confusion about runtime checks on
5286 FUNCTION types) was fixed by Alexey Dejneka.
5287 * Some internal cleanups (getting rid of variables which aren't
5288 needed now that the byte interpreter is gone) caused the fasl
5289 file format number to change again.
5291 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5292 * major incompatible change: The default fasl file extension, i.e. the
5293 default extension for files produced by COMPILE-FILE, has changed
5294 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5296 ** There are many changes in the implementation of the compiler.
5297 SBCL is now essentially a compiler-only implementation of ANSI
5298 Common Lisp. EVAL still "interprets" a few special cases, but
5299 almost all the interesting cases are handled by creating
5300 a LAMBDA expression, calling COMPILE on it, then calling
5301 FUNCALL on the result.
5302 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5303 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5304 Since the code is newer, there might still be some new bugs
5305 (though not as many as before Martin Atzmueller's fixes:-). But
5306 the new code is substantially simpler and clearer, and hopefully
5307 any remaining bugs will be simpler, less fundamental, and more
5308 fixable then the bugs in the old code.
5309 ** The revised compiler is still a little unsteady on its feet.
5311 *** The debugging information it produces (particularly the names
5312 of FUNCTION objects) is sometimes much less useful than what
5313 the old compiler produced.
5314 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5315 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5316 within a MACROLET) has been temporarily weakened.
5317 ** There are new compiler optimizations for various functions:
5318 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5319 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5320 *** the math functions TRUNCATE, FLOOR, and CEILING
5321 *** the function-of-all-trades COERCE
5322 Mostly these should be transparent, but there's one
5323 potentially-annoying problem (bug 117): when the compiler
5324 inline-expands a function and does type analysis on the result,
5325 it can create control paths which have type mismatches, and
5326 when it can't prove that those control paths aren't taken,
5327 it will issue WARNINGs about the type mismatches. This is
5328 a particular problem in practice for the new sequence functions.
5329 It's not clear how this should be fixed, and for now, a
5330 workaround is given in the entry for 117 in the BUGS file.
5331 ** (Because of the interaction between the two previous items --
5332 occasional inlining problems and new inline expansions -- some
5333 of the new sequence function optimizations won't really kick in
5334 completely until debugging information, and then inlining, are
5335 straightened out in some future version.)
5336 * minor incompatible changes:
5337 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5338 DIRECTORY no longer implicitly promotes NIL slots of its
5339 pathname argument to :WILD. In particular, when you ask for the
5340 contents of a directory (which you used to be able to do without
5341 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5342 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5343 ** changes in behavior that ANSI explicitly defines to be
5344 implementation dependent:
5345 *** The new compiler-only implementation still conforms with ANSI,
5346 but acts a little different than before. Besides the obvious
5347 changes in performance tradeoffs (that the cost per form passed
5348 to EVAL has gone up, and the cost per form executed by EVAL
5349 has gone down), the behavior of the system changes a little
5350 because there are no longer any interpreted function objects.
5351 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5352 e.g. doing COMPILE on the output of interactive DEFUN is
5354 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5356 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5357 has changed from (:CL) to NIL.
5358 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5359 e.g. #\Newline and #\Tab, don't have names specified in the
5360 ANSI Common Lisp standard, is now based on their ASCII symbolic
5361 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5362 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5363 are no longer used for output.
5364 ** changes in internal implementation constants:
5365 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5366 4 million. (If your application spends a lot of time GCing and
5367 you have a lot of RAM, you might want to experiment with
5368 increasing it even more.)
5369 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5370 However, almost all old code should still continue to work without
5371 immediate update, as SB-C-CALL is now a (deprecated) nickname
5373 ** Old operator names in the style DEF-FOO are now deprecated in
5374 favor of new corresponding names DEFINE-FOO, for consistency with
5375 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5376 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5377 internal symbols, but a few supported extensions like
5378 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5379 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5380 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5381 etc. as you get deeper into recursive calls to the debugger
5382 command loop, instead of the old "5]", "5]]", "5]]]"
5383 sequence. (I was motivated to do this when squabbles between
5384 ILISP and SBCL left me very deeply nested in the debugger. In the
5385 short term, this change will probably provoke more ILISP/SBCL
5386 squabbles, but hopefully it will be an improvement in the long run.)
5387 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5388 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5389 function, since declaiming return types involving aliens is
5390 (1) annoyingly messy to do by hand and (2) vital to efficient
5391 compilation of code which calls such functions.
5392 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5393 longer reexported by the SB-EXT package. They're solely useful
5394 for alien code, so it seems more logical that you should get
5395 them from the SB-ALIEN package, not in SB-EXT.
5396 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5397 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5398 features. Instead, the code that they used to control is always
5399 built into the system.
5400 * many other bug fixes
5401 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5402 advantage of the new EVAL-WHEN stuff and to clean them up in
5403 general, and they are now more ANSI-compliant in a number of
5404 ways. Martin Atzmueller is responsible for a lot of this.
5405 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5407 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5408 *** correct ERROR type for various file operations
5409 *** some fixes for Lisp streams
5410 *** DEFMETHOD syntax checking
5411 *** changing old weird representation of debug information as
5412 strings (which, among their other deficiencies, don't transform
5413 correctly when you rename packages, and don't change their
5414 print representation when you change things like *PACKAGE*
5415 and *PRINT-LENGTH*) to symbols and lists of symbols
5416 He also made several improvements and fixed several bugs in DESCRIBE.
5417 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5419 *** misbehavior of WRITE-STRING/WRITE-LINE
5420 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5421 and several other LOOP problems as well
5422 *** DIRECTORY when similar filenames are present
5423 *** DEFGENERIC with :METHOD options
5424 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5425 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5426 *** argument ordering in FIND with :TEST option
5427 *** mishandled package designator argument in APROPOS-LIST
5428 *** various problems in the backquote readmacro
5429 *** a bug in APROPOS
5430 *** probably some others that I'm not describing very well here,
5431 since the CVS log documents them by reference to sbcl-devel
5432 messages, and the SourceForge archives aren't working well.:-(
5433 ** Dan Barlow improved the Alpha port (and is making progress on the
5434 PPC port, for those of you who think different).
5435 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5436 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5437 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5438 continues to work on the SPARC port (for those of you in a position
5439 to look down upon our little PC-compatible boxes from a great height).
5440 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5441 and uses that copy, rather than the current dynamic value, when
5442 it's trying to decide whether to truncate output. Thus e.g.
5443 (let ((*print-lines* 50))
5444 (pprint-logical-block (stream nil)
5446 (let ((*print-lines* 8))
5447 (print (aref possiblybigthings i) stream)))))
5448 should now truncate the logical block only at 50 lines, instead of
5449 often truncating it at 8 lines, as it did before.
5450 * The doc/cmucl/ directory, containing old CMU CL documentation
5451 from the time of the fork, is no longer part of the base system.
5452 SourceForge has shut down its anonymous FTP service, and with it
5453 my original plan for distributing the old CMU CL documentation
5454 there. For now, if you need these files you can download an old
5455 SBCL source release and extract them from it.
5456 * The fasl file version number changed again, for dozens of reasons,
5457 some of which are apparent above.
5459 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5460 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5461 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5462 patch, so that DISASSEMBLE output is much nicer.
5463 * The code in the SB-PROFILE package now seems reasonably stable.
5464 I still haven't decided what the final interface should look like
5465 (I'd like PROFILE to interact cleanly with TRACE, since both
5466 facilities use function encapsulation) but if you have a need
5467 for profiling now, you can probably use it successfully with
5468 the current CMU-CL-style interface.
5469 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5470 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5471 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5472 link now returns the dangling link itself, and for similar
5473 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5474 link itself. (In these cases the old code signalled an error and
5475 looped endlessly, respectively.) Thus, DIRECTORY now works even
5476 in the presence of dangling and cyclic symbolic links.
5477 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5478 is now a supported extension again, since the consensus on
5479 sbcl-devel was that it can be useful for ordinary development
5480 work, not just for debugging SBCL itself.
5481 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5482 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5483 that currently-defined functions might be redefined later with
5484 different return types.
5485 * Hash tables can be printed readably, as inspired by CMU CL code
5486 of Eric Marsden and SBCL code of Martin Atzmueller.
5487 * better error handling in CLOS method combination, thanks to
5488 Martin Atzmueller porting Pierre Mai's CMU CL patches
5489 * more overflow fixes for >16Mbyte I/O buffers
5490 * A bug in READ has been fixed, so that now a single Ctrl-D
5491 character suffices to cause end-of-file on character streams.
5492 In particular, now you only need one Ctrl-D at the command
5493 line (not two) to exit SBCL.
5494 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5496 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5497 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5498 does the right thing.
5499 * The implementation of some type tests, especially for CONDITION
5500 types, is now tidier and maybe faster, due to CMU CL code
5501 originally by Douglas Crosher, ported by Martin Atzmueller.
5502 * Some math functions have been fixed, and there are new
5503 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5504 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5505 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5506 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5507 likely to be built into sbcl-0.7.0.)
5508 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5509 CL, ported to SBCL by Martin Atzmueller)
5510 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5511 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5512 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5513 * There's a new slam.sh hack to shorten the edit/compile/debug
5514 cycle for low-level changes to SBCL itself, and a new
5515 :SB-AFTER-XC-CORE target feature to control the generation of
5516 the after-xc.core file needed by slam.sh.
5517 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5518 COMPILE-FILE is no longer supported, so that now every function
5519 gets an entry point, so that block compilation looks a little
5520 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5521 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5522 returns the number of bytes consed since the system started,
5523 rather than the number consed since the first time the function
5524 was called. (The new definition parallels ANSI functions like
5525 CL:GET-INTERNAL-RUN-TIME.)
5526 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5527 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5528 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5529 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5530 * Fasl file version numbers are now independent of the target CPU,
5531 since historically most system changes which required version
5532 number changes have affected all CPUs equally. Similarly,
5533 the byte fasl file version is now equal to the ordinary
5536 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5537 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5538 is no longer recognized. I apologize for this, because it was
5539 listed in SB-EXT as a supported extension, but I found that
5540 its existing behavior was poorly specified, as well as incorrectly
5541 specified, and it looked like too much of a mess to straighten it
5542 out. I have enough on my hands trying to get ANSI stuff to work..
5543 * many patches ported from CMU CL by Martin Atzmueller, with
5544 half a dozen bug fixes in pretty-printing and the debugger, and
5545 half a dozen others elsewhere
5546 * fixed bug 13: Floating point infinities are now supported again.
5547 They might still be a little bit flaky, but thanks to bug reports
5548 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5549 as flaky as they were.
5550 * The --noprogrammer command line option is now supported. (Its
5551 behavior is slightly different in detail from what the old man
5552 page claimed it would do, but it's still appropriate under the
5553 same circumstances that the man page talks about.)
5554 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5555 are now supported, and enabled by default. Thus, the compiler can
5556 handle many floating point and complex operations much less
5557 inefficiently. (Thus e.g. you can implement a complex FFT
5559 * The compiler now detects type mismatches between DECLAIM FTYPE
5560 and DEFUN better, and implements CHECK-TYPE more correctly, and
5561 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5562 thanks to patches from Martin Atzmueller.
5563 * various fixes to make the cross-compiler more portable to
5564 ANSI-conforming-but-different cross-compilation hosts (notably
5565 Lispworks for Windows, following bug reports from Arthur Lemmens)
5566 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5567 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5568 fixed thanks to Pierre Mai's CMU CL patches.
5569 * fixes to keep the system from overflowing internal counters when
5570 it tries to use i/o buffers larger than 16M bytes
5571 * fixed bug 45a: Various internal functions required to support
5572 complex special functions have been merged from CMU CL sources.
5573 (When I was first setting up SBCL, I misunderstood a compile-time
5574 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5575 * improved support for type intersection and union, fixing bug 12
5576 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5577 more obscure bugs as well
5578 * some steps toward byte-compiling non-performance-critical
5579 parts of the system, courtesy of patches from Martin Atzmueller
5580 * Christophe Rhodes has made some debian packages of sbcl at
5581 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5582 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5583 stable, but are nonetheless usable. When he's ready, I'd be happy
5584 to add them to the SourceForge "File Releases" section. (And if
5585 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5586 * new fasl file format version number (because of changes in
5587 internal representation of (OR ..) types to accommodate the new
5588 support for (AND ..) types, among other things)
5590 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5591 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5593 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5595 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5596 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5597 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5598 * DESCRIBE now works on structure objects again.
5599 * Most function call argument type mismatches are now handled as
5600 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5601 know whether the function will be redefined before the call is
5602 executed. (The compiler could flag local calls with full WARNINGs,
5603 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5604 it doesn't keep track of enough information to know whether calls
5605 are local in this sense.)
5606 * Compiler output is now more verbose, with messages truncated
5607 later than before. (There should be some supported way for users
5608 to override the default verbosity, but I haven't decided how to
5609 provide it yet, so this behavior is still controlled by the internal
5610 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5611 src/compiler/ir1util.lisp.)
5612 * Fasl file format version numbers have increased again, because
5613 support for the Gray streams extension changes the layout of the
5614 system's STREAM objects.
5615 * The Gray subclassable streams extension now works, thanks to a
5616 patch from Martin Atzmueller.
5617 * The full LOAD-FOREIGN extension (not just the primitive
5618 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5619 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5620 but like most other programs, it defaults to copying the Unix
5621 environment from the original process instead of starting the
5622 new process in an empty environment.
5623 * Extensions which manipulate the Unix environment now support
5624 an :ENVIRONMENT keyword option which doesn't smash case or
5625 do other bad things. The CMU-CL-style :ENV option is retained
5626 for porting convenience.
5627 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5628 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5630 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5632 * A patch from Martin Atzmueller seems to have solved the SIGINT
5633 problem, and as far as we know, signal-handling now works cleanly.
5634 (If you find any new bugs, please report them!)
5635 * The system no longer defaults Lisp source file names to types
5636 ".l", ".cl", or ".lsp", but only to ".lisp".
5637 * The compiler no longer uses special default file extensions for
5638 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5639 seems to expect a single default extension for all compiled code,
5640 and there's no compelling reason to try to stretch the standard
5641 to allow two different extensions.) Instead, byte-compiled files
5642 default to the same extension as native-compiled files.
5643 * Fasl file format version numbers have increased again, because
5644 a rearrangement of internal implementation packages made some
5645 dumped symbols in old fasl files unreadable in new cores.
5646 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5647 many fewer weird special cases.
5648 * Bug #17 (differing COMPILE-FILE behavior between logical and
5649 physical pathnames) has been fixed, and some related misbehavior too,
5650 thanks to a patch from Martin Atzmueller.
5651 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5652 by Tim Moore, ported to SBCL by Martin Atzmueller.
5653 * Martin Atzmueller fixed several filesystem-related problems,
5654 including bug #36, in part by porting CMU CL patches, which were
5655 written in part by Paul Werkowski.
5656 * More compiler warnings in src/runtime/ are gone, thanks to
5657 more patches from Martin Atzmueller.
5658 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5661 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5663 * DESCRIBE now works on CONDITION objects.
5664 * The debugger now handles errors which arise when trying to print
5665 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5667 * The build system now uses an additional file, customize-target-features.lisp,
5668 to allow local modifications to the target *FEATURES* list. (The point of
5669 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5670 debugging features enabled, without having to worry about propagating it
5671 into everyone's system when I do a "cvs update".) When no
5672 customize-target-features.lisp file exists, the target *FEATURES* list
5673 should be constructed the same way as before.
5674 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5675 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5676 warn about behavior which is undefined under the ANSI spec. Note: This
5677 is specified by ANSI, but it's not very popular with programmers.
5678 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5679 macro in the SBCL sources for an example of a workaround which you
5680 might use to make portable ANSI-standard code which does what you want.
5681 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5682 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5683 when it's used as a non-toplevel form. (This is required in order
5684 to implement the DEFCONSTANT-EQX macro.)
5685 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5686 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5687 funny things, due to bugs in the implementation of EVAL-WHEN
5688 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5689 non-toplevel DEFCONSTANTs are uncommon.)
5690 * The core file version number and fasl file version number have been
5691 incremented, because the old noncompliant DEFCONSTANT behavior involved
5692 calling functions which no longer exist, and because I also took the
5693 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5694 * fixed bug 1 (error handling before read-eval-print loop starts), and
5695 redid debugger restarts and related debugger commands somewhat while
5697 ** The QUIT debugger command is gone, since it did something
5698 rather different than the SB-EXT:QUIT command, and since it never
5699 worked properly outside the main toplevel read/eval/print loop.
5700 Invoking the new TOPLEVEL restart provides the same functionality.
5701 ** The GO debugger command is also gone, since you can just invoke
5702 the CONTINUE restart directly instead.
5703 ** The TOP debugger command is also gone, since it's redundant with the
5704 FRAME 0 command, and since it interfered with abbreviations for the
5706 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5708 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5709 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5710 some porting work by Martin Atzmueller)
5711 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5712 with a boatload of patches which he ported to SBCL. Now that those
5714 ** The system tries to make sure that its low-priority messages
5715 are prefixed by semicolons, to help people who like to use
5716 syntax highlighting in their ILISP buffer. (This patch
5717 was originally due to Raymond Toy.)
5718 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5719 patches originally written by Raymond Toy.
5720 ** The compiler understands coercion between single-value and
5721 multiple-VALUES type expressions better, getting rid of some very
5722 weird behavior, thanks to patches originally by Robert MacLachlan
5723 and Douglas Crosher.
5724 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5725 lambda lists, thanks to a patch originally by Pierre Mai.
5726 ** The system no longer bogusly warns about "abbreviated type
5728 ** The compiler gets less confused by inlining and RETURN-FROM,
5729 thanks to some patches originally by Tim Moore.
5730 ** The system no longer hangs when dumping circular lists to fasl
5731 files, thanks to a patch originally from Douglas Crosher.
5732 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5733 undefined function error.
5734 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5735 in structure slot initforms) for now, documented workaround instead:-|
5736 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5737 * fixed bug 5: added stubs for various Gray stream functions called
5738 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5739 installed, at least appropriate type errors are generated
5740 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5741 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5742 consistently in DEFMETHOD forms.
5743 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5744 it doesn't seem to affect SBCL after all
5745 * The C runtime system now builds with better optimization and many
5746 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5748 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5750 * The system is now under CVS at SourceForge (instead of the
5751 CVS repository on my home machine).
5752 * The new signal handling code has been tweaked to treat register
5753 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5754 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5755 downstream, e.g. in debug-int.lisp, has implicit dependencies
5756 on the unsignedness of integer representation of machine words,
5757 and that caused the system to bomb out with infinite regress
5758 when trying to recover from type errors involving signed values,
5759 e.g. (BUTLAST '(1 2 3) -1).)
5760 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5761 (This was one of the bugs Peter Van Eynde reported back in July.)
5762 * The system now uses code inspired by Colin Walters' O(N)
5763 implementation of MAP (from the cmucl-imp@cons.org mailing
5764 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5765 inline the MAP operation, and there is more than one
5766 sequence argument to the MAP call (so that it can't just
5767 do ETYPECASE once and for all based on the type of the
5768 single sequence argument). (The old non-inline implementation
5769 of the general M-argument sequence-of-length-N case required
5770 O(M*N*N) time when any of the sequence arguments were LISTs.)
5771 * The QUIT :UNIX-CODE keyword argument has been renamed to
5772 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5773 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5775 * Raymond Wiker's patches to port dynamic loading from Linux to
5776 FreeBSD have been added.
5777 * The BUGS file is now more nearly up to date, thanks in large part
5778 to Martin Atzmueller's review of it.
5779 * The debugger now flushes standard output streams before it begins
5780 its output ("debugger invoked" and so forth).
5781 * The core version number and fasl file version number have both
5782 been incremented, because of incompatible changes in the layout
5784 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5785 used to not be called for a saved Lisp image.)
5786 * Martin Atzmueller's version of a patch to fix a compiler crash,
5787 as posted on sbcl-devel 13 September 2000, has been installed.
5788 * Instead of installing Martin Atzmueller's patch for the
5789 compiler transform for SUBSEQ, I deleted the compiler transform,
5790 and transforms for some similar consing operations.
5791 * A bug in signal handling which kept TRACE from working on OpenBSD
5793 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5794 away by constant folding
5795 * The system now defines its address space constants in one place
5796 (in the Lisp sources), and propagates them automatically elsewhere
5797 (through GENESIS and the sbcl.h file). Therefore, patching the
5798 address map is less unnecessarily tedious and error-prone. The
5799 Lisp names of address space constants have also been systematized.
5800 * CVS tags like dollar-Header-dollar have been removed from
5801 the sources, because they have never saved me trouble and
5802 they've been source of trouble working with patches and other
5803 diff-related operations.
5804 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5805 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5807 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5809 * The system has been ported to OpenBSD.
5810 * The system now compiles with a simple "sh make.sh" on the systems
5811 that it's supported on. I.e., now you no longer need to tweak
5812 text in the target-features.lisp-expr and symlinks in src/runtime/
5813 by hand, the make.sh takes care of it for you.
5814 * The system is no longer so grossly inefficient when compiling code
5815 involving vectors implemented as general (not simple) vectors (VECTOR T),
5816 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5817 which dares to use the various sequence functions on non-simple
5818 vectors, takes less of a performance hit.
5819 * There is now a primitive type predicate VECTOR-T-P
5820 to test for the (VECTOR T) type, so that e.g.
5821 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5822 can now be compiled with some semblance of efficiency. (The old code
5823 turned the type declaration into a full call to %TYPEP at runtime!)
5824 * AREF on (VECTOR T) is still not fast, since it's still compiled
5825 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5826 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5827 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5828 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5829 without making full calls to SUBTYPEP at runtime.
5830 (Some analogous efficiency issues for non-simple vectors specialized to
5831 element types other than T, or for non-simple multidimensional arrays,
5832 have not been addressed. They could almost certainly be handled the
5833 same way if anyone is motivated to do so.)
5834 * The changes in array handling break binary compatibility, so
5835 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5836 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5837 instead of (VALUES T T).
5838 * By following the instructions that Dan Barlow posted to sbcl-devel
5839 on 2 July 2000, I was able to enable primitive dynamic object
5840 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5841 functionality is not implemented (since it calls ld to resolve
5842 library references automatically, requiring RUN-PROGRAM for its
5843 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5844 try to resolve library references) is now supported.
5845 * The system now flushes the standard output streams when it terminates,
5846 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5847 them at several other probably-convenient times, e.g. in each pass of
5848 the toplevel read-eval-print loop, and after evaluating a form given
5849 as an "--eval" command-line option. (These changes were motivated by a
5850 discussion of stream flushing issues on cmucl-imp in August 2000.)
5851 * The source transform for TYPEP of array types no longer assumes
5852 that an array whose element type is a not-yet-defined type
5853 is implemented as an array of T, but instead punts, so that the
5854 type will be interpreted at runtime.
5855 * There is now some support for cross-compiling in make.sh: each of
5856 the phases of make.sh has its own script. (This should be transparent
5857 to people doing ordinary, non-cross-compile builds.)
5858 * Since my laptop doesn't have hundreds of megabytes of memory like
5859 my desktop machine, I became more motivated to do some items on
5860 my to-do list in order to reduce the size of the system a little:
5861 ** Arrange for various needed-only-at-cold-init things to be
5862 uninterned after cold init. To support this, those things have
5863 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5864 symbols with such names are now uninterned after cold init).
5865 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5866 fasl files for cold load.
5867 ** Remove the old compiler structure pooling code (which used to
5868 be conditional on the target feature :SB-ALLOC) completely.
5869 ** Redo the representation of some data in cold init to be more compact.
5870 (I also looked into supporting byte compiled code at bootstrap time,
5871 which would probably reduce the size of the system a lot, but that
5872 looked too complicated, so I punted for now.)
5873 * The maximum signal nesting depth in the src/runtime/ support code has
5874 been reduced from 4096 to 256. (I don't know any reason for the very
5875 large old value. If the new smaller value turns out to break something,
5876 I'll probably just bump it back up.)
5877 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5879 * Many, many bugs reported by Peter Van Eynde have been added to
5880 the BUGS list; some have even been fixed.
5881 * While enabling dynamic object file loading, I tried to make the
5882 code easier to understand, renaming various functions and variables
5883 with less ambiguous names, and changing some function calling
5884 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5885 * While trying to figure out how to do the OpenBSD port, I tried to
5886 clean up some of the code in src/runtime/. In particular, I dropped
5887 support for non-POSIX signal handling, added various comments,
5888 tweaked the code to reduce the number of compilation warnings, and
5889 renamed some files to increase consistency.
5890 * To support the new automatic configuration functionality in make.sh,
5891 the source file target-features.lisp-expr has been replaced with the
5892 source file base-target-features.lisp-expr and the machine-generated
5893 file local-target-features.lisp-expr.
5894 * fixed a stupid quoting error in make.sh so that using CMU CL
5895 "lisp -batch" as cross-compilation host works again
5897 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5899 * DESCRIBE no longer tries to call itself recursively to describe
5900 bound/fbound values, so that it no longer fails on symbols which are
5901 bound to themselves (like keywords, T, and NIL).
5902 * DESCRIBE now works on generic functions.
5903 * The printer now prints less-screwed-up representations of closures
5904 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5905 * A private symbol is used instead of the :EMPTY keyword previously
5906 used to mark empty slots in hash tables. Thus
5907 (DEFVAR *HT* (MAKE-HASH-TABLE))
5908 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5909 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5910 now does what ANSI says that it should. (You can still get
5911 similar noncompliant behavior if bang on the hash table
5912 implementation with all the symbols you get back from
5913 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5914 This breaks binary compatibility, since tests for equality to
5915 :EMPTY are wired into things like the macroexpansion of
5916 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5918 * There's now a minimal placeholder implementation for CL:STEP,
5919 as required by ANSI.
5920 * An obscure bug in the interaction of the normal compiler, the byte
5921 compiler, inlining, and structure predicates has been patched
5922 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5923 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5925 * Missing ordinary arguments in a macro call are now detected even
5926 when the macro lambda list contains &KEY or &REST.
5927 * The debugger no longer complains about encountering the top of the
5928 stack when you type "FRAME 0" to explicitly instruct it to go to
5929 the top of the stack. And it now prints the frame you request even
5930 if it's the current frame (instead of saying "You are here.").
5931 * As specified by ANSI, the system now always prints keywords
5932 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5934 * The default initial SIZE of HASH-TABLEs is now smaller.
5935 * Type information from CLOS class dispatch is now propagated
5936 into DEFMETHOD bodies, so that e.g.
5937 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5939 is now basically equivalent to
5940 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5941 (DECLARE (TYPE SINGLE-FLOAT X))
5943 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5944 operation, without having to do run-time type dispatch.
5945 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5946 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5947 * Since I don't seem to be making big file reorganizations very often
5948 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5949 is overflowing my ability to conveniently back them up), I've finally
5950 checked the system into CVS. (The CVS repository is on my home system,
5951 not at SourceForge -- putting it on SourceForge might come later.)
5952 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5953 high-level GC-NOTIFY-FOO functions send their output. (There's
5954 still very little control of where low-level verbose GC functions
5955 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5956 less than it used to -- the GC-NOTIFY-FOO functions are now under
5957 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5958 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5959 in only one place in the source code, and propagates it automatically
5960 everywhere that it's needed. Thus e.g. when I bump the version from
5961 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5962 * The C source files now include boilerplate legalese and documentation
5963 at the head of each file (just as the Lisp source files already did).
5964 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5965 to his page will be replaced with a link to his new CLiki service.
5967 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5969 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5970 * The build process now looks for GNU make under the default name "gmake",
5971 instead of "make" as it used to. If GNU make is not available as "gmake"
5972 on your system, you can change this default behavior by setting the
5973 GNUMAKE environment variable.
5974 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5975 can build without error under CMU CL.
5977 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5979 * There is now a partial SBCL user manual (with some new text and some
5980 text cribbed from the CMU CL manual).
5981 * The beginnings of a profiler have been added (starting with the
5982 CMU CL profiler and simplifying and cleaning up). Eventually the
5983 main interface should be through the TRACE macro, but for now,
5984 it's still accessed through vaguely CMU-CL-style functions and macros
5985 exported from the package SB-PROFILE.
5986 * Some problems left over from porting CMU CL to the new
5987 cross-compilation bootstrap process have been cleaned up:
5988 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5989 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5990 part when getting rid of the compiler *BACKEND* stuff.)
5991 ** The value of *NULL-TYPE* was screwed up, because it was
5992 being initialized before the type system knew the final
5993 definition of the 'NULL type. This screwed up several key
5994 optimizations in the compiler, causing inefficiency in all sorts
5995 of places. (I found it because I wanted to understand why
5996 GET-INTERNAL-RUN-TIME was consing.)
5997 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5998 PROCLAIM FTYPE information. Unfortunately this broke binary
5999 compatibility again, since now the forms output by DEFGENERIC
6000 to refer to functions which didn't exist in 0.6.3.
6001 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6002 can use the new (as of 0.6.3) transform for SOME into MAP into
6004 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6005 values to (INTEGER 0 1000000), so that the time code will no longer
6006 occasionally get blown up by Linux returning 1000000 microseconds
6007 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6008 its output conform to the ANSI spec. (Alas, this makes its output
6009 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6010 * A full call to MAP NIL with a single sequence argument no longer conses.
6011 * fixes to problems pointed out by Martin Atzmueller:
6012 * The manual page no longer talks about multiprocessing as though
6013 it were currently supported.
6014 * The ILISP support patches have been removed from the distribution,
6015 because as of version 5.10.1, ILISP now supports SBCL without us
6016 having to maintain patches.
6017 * added a modified version of Raymond Toy's recent CMU CL patch for
6018 EQUALP comparison of HASH-TABLE
6020 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6022 * The system still can't cross-compile itself with
6023 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6024 entails), but at least it can compile more of itself that way
6025 than it used to be able to, and various buglets which were uncovered
6026 by trying to cross-compile itself that way have now been fixed.
6027 * This release breaks binary compatibility again. This time
6028 at least I've incremented the FASL file format version to 2, so that the
6029 problem can be detected reliably instead of just causing weird errors.
6030 * various new style warnings:
6031 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6032 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6033 ** using the lexical binding of a variable named in the *FOO* style
6034 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6035 as specified by ANSI.
6036 * *RANDOM-STATE* is no longer automatically initialized from
6037 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6038 default behavior of the system is to repeat its behavior every time
6039 it's run. If you'd like to change this behavior, you can always
6040 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6041 old convention there was no comparably easy way to get the system to
6042 repeat its behavior every time it was run.
6043 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6044 FTYPE declarations has been removed, in favor of their ANSI
6045 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6046 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6047 the types of their sequence arguments can be determined at compile time.
6048 This is done through a new open code expansion for MAP which eliminates
6049 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6050 argument types can be determined at compile time.
6051 * The optimizer now transforms COERCE into an identity operation when it
6052 can prove that the coerced object is already of the correct type. (This
6053 can be a win for machine generated code, including the output of other
6054 optimization transforms, such as the MAP transform above.)
6055 * Credit information has been moved from source file headers into CREDITS.
6056 * Source file headers have been made more standard.
6057 * The CASE macro now compiles without complaining even when it has
6060 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6062 * (Note that the way that the PCL macroexpansions were rewritten
6063 to accommodate the change in DEFGENERIC below breaks binary
6064 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6065 not run under sbcl-0.6.2. Once we get out of alpha releases,
6066 i.e. hit release 1.0.0, we'll probably try to maintain binary
6067 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6068 and sbcl-1.4.4. Until then, however, it might be fairly common
6069 for maintenance releases to break binary compatibility.)
6070 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6072 * The reporting of unhandled signals has been changed to print some
6073 explanatory text as well as the report form. (Previously only
6074 the report form was printed.)
6075 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6076 it defines, so that the compiler no longer issues undefined function
6077 warnings for compiled-but-not-yet-loaded generic functions.
6078 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6079 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6080 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6081 section of the ANSI spec are supported.
6082 * The "" nickname for the "KEYWORD" package has been removed.
6083 The reader still handles symbol tokens which begin with a package marker
6084 as keywords, but it doesn't expose its mechanism for doing so in the
6085 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6086 * The system now issues STYLE-WARNINGs for contradictory TYPE
6087 proclamations. (Warnings for contradictory FTYPE proclamations would
6088 be nice too, but those can't be done usefully unless the type system
6089 is made smarter about FUNCTION types.)
6090 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6091 systematized, so that "*target-*.lisp is supposed to exist only on the
6092 target and imply that there's a related file which exists on the
6093 host, and *host-*.lisp is supposed to exist only on the host and imply
6094 that there's a related file which exists on the target. This involves a
6095 lot of renaming. Hopefully the acute confusion caused by the renaming
6096 will be justified by the reduction in chronic confusion..
6097 ** runtime-type.lisp -> early-target-type.lisp
6098 ** target-type.lisp -> late-target-type.lisp
6099 ** early-host-format.lisp -> early-format.lisp
6100 ** late-host-format.lisp -> late-format.lisp
6101 ** host-error.lisp -> misc-error.lisp
6102 ** early-error.lisp -> early-target-error.lisp
6103 ** late-error.lisp -> late-target-error.lisp
6104 ** host-defboot.lisp -> early-defboot.lisp
6105 ** code/misc.lisp -> code/target-misc.lisp
6106 ** code/host-misc.lisp -> code/misc.lisp
6107 ** code/numbers.lisp -> code/target-numbers.lisp
6108 ** code/early-numbers.lisp -> numbers.lisp
6109 ** early-host-type.lisp -> early-type.lisp
6110 ** late-host-type.lisp -> late-type.lisp
6111 ** host-typep.lisp -> typep.lisp
6112 ** load.lisp -> target-load.lisp
6113 ** host-load.lisp -> load.lisp
6114 ** host-disassem.lisp -> disassem.lisp
6115 ** host-insts.lisp -> insts.lisp
6116 ** byte-comp.lisp -> target-byte-comp.lisp
6117 ** host-byte-comp.lisp -> byte-comp.lisp
6118 ** host-signal.lisp -> signal.lisp
6119 ** host-defstruct.lisp -> defstruct.lisp
6120 ** late-target-type.lisp -> deftypes-for-target.lisp
6121 Furthermore, several other previously target-only files foo.lisp (e.g.
6122 hash-table.lisp and random.lisp) have been split into a target-and-host
6123 foo.lisp file and a target-only target-foo.lisp file, with their key type
6124 definitions in the target-and-host part, so that the cross-compiler will
6125 know more about target types.
6126 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6127 gone away. In their place are various *BACKEND-FOO* variables
6128 corresponding to the slots of the old structure.
6129 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6130 into the target SBCL has been fixed.
6131 * The chill.lisp system for loading cold code into a running SBCL
6133 * Support for the CMU CL "scavenger hook" extension has been removed.
6134 (It was undocumented and unused in the CMU CL sources that SBCL was
6135 derived from, and stale in sbcl-0.6.1.)
6136 * Various errors in the cross-compiler type system were detected
6137 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6138 (enabling various consistency checks). Many of them were fixed,
6139 but some hard problems remain, so the compiler is back to
6140 running without *TYPE-SYSTEM-INITIALIZED* for now.
6141 * As part of the cross-compiler type system cleanup, I implemented
6142 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6143 * I have started adding UNCROSS calls throughout the type system
6144 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6145 on cross-compiler input files will be able to go away, and various
6147 * CONSTANTP now returns true for quoted forms (as explicitly required
6150 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6152 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6153 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6154 (MAKE-LIST -1). In the longer term, it ought to become true
6155 that declarations are assertions even at SAFETY 1. For now, it's not
6156 quite true even at SAFETY 3, but it's at least more nearly true..
6157 (Note that this change seems to increases the size of the system by
6158 O(5%) and to decrease the speed of the compiler by 20% or more.)
6159 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6160 for the problem of printing dozens of lines of distracting information
6161 about low-level system machinery as part of the top stack frame
6162 on entry to the debugger when an undefined function was called.
6163 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6164 is not reset to COMMON-LISP-USER.
6165 * Compilation of stuff related to dyncount.lisp has been made conditional
6166 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6167 smaller. The various dyncount-related symbols have been moved into
6168 a new "SB-DYNCOUNT" package.
6169 * tty-inspect.lisp has been renamed to inspect.lisp.
6170 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6171 feature has gone away. (When we eventually port to other flavors of
6172 libc and/or Unix, we'll try to make the differences between flavors
6173 invisible at the user level.)
6174 * Various other *FEATURES* tags, and/or their associated conditionals,
6175 have been removed if obsolescent, or given better documentation, or
6176 sometimes given more-mnemonic names.
6178 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6180 * tidied up "make.sh" script
6181 * tidied up system directory structure
6182 * better "clean.sh" behavior
6183 * added doc/FOR-CMUCL-DEVELOPERS
6184 * many many small tweaks to output format, e.g. removing possibly-confusing
6185 trailing #\. character in DESCRIBE-INSTANCE
6186 * (EQUALP #\A 'A) no longer signals an error.
6187 * new hashing code, including EQUALP hashing
6188 * tidied up Lisp initialization and toplevel
6189 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6190 * command line argument processing
6191 * added POSIX-GETENV function to deal with Unix-ish environment variables
6192 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6193 terminating SBCL on EOF
6194 * non-verbose GC by default
6195 * There is no more "sbcl" shell script; the sbcl file is now the C
6196 runtime executable (just like CMU CL).
6197 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6199 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6200 symbol and package information as Lisp native symbol and package objects
6201 instead of strings naming symbols and strings naming packages. This way,
6202 whenever packages are renamed (as in warm init), debug information is
6203 transformed along with everything else.
6204 * tweaked the optimization policy declarations which control the building
6205 of SBCL itself. Now, among other things, the system no longer saves
6206 source location debugging information. (This helps two problems at once
6207 by reducing SBCL size and by keeping SBCL from trying to look for its
6208 sources -- which may not exist -- when reporting errors.)
6209 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6210 debugging and testing purposes
6211 * cleaned up printing, making the printer call PRINT-OBJECT for
6212 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6213 methods, giving nearly-ANSI behavior
6214 * converted almost all special variables to use *FOO* naming convention
6215 * deleted PARSE-TIME functionality, since it can be done portably
6216 * moved some files out of cold init into warm init
6217 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6219 * regularized formatting of source files
6220 * added an install.sh script
6221 * fixed ridiculous memory usage of cross-compiler by making
6222 compiler/alloc.lisp not try to do pooling unless it can hook
6223 itself into the GC of the cross-compilation host. Now the system
6224 builds nicely on my old laptop.
6225 * added :SB-ALLOC in target-features.lisp-expr
6226 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6227 was not implemented)
6228 * re-did condition handling and note reporting in the compiler. Notes
6229 are no longer handled by signalling conditions. Style warnings
6230 and warnings are handled more correctly and reported in such a way
6231 that it's easy to find one or the other in your output (so that you
6232 can e.g. figure out which of many problems caused COMPILE-FILE to
6234 * changed the severity of several compiler warnings from full WARNING
6235 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6236 compiler note reporting so that it doesn't use the condition system
6237 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6238 COMPILE-FILE command)
6239 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6240 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6241 no longer supported, since their implementation was deeply intertwingled
6242 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6243 * removed bogus "support" for compiler macros named (SETF FOO), and
6244 removed the compiler macro for SETF INFO (but only after making a fool
6245 of myself on the cmucl-imp mailing list by posting a bogus patch for
6246 DEFINE-COMPILER-MACRO..)
6247 * Compiled files containing forms which have side effects on the Lisp
6248 reader (such as DEFPACKAGE forms) are now handled more correctly.
6249 (Compiler queuing of top level lambdas has been suppressed by setting
6250 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6251 * deleted various currently-unused source files, e.g. gengc.lisp. They
6252 may be added back at some point e.g. when porting to other architectures,
6253 but until they are it's distracting to distribute them and to try to
6255 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6256 there were so many of them they're just distractions, and UNCROSS is
6257 known to be able to handle the current sources
6258 * moved PROFILE functionality into TRACE, so that it will be clear
6259 how the wrapping and unwrapping of functions when you profile them
6260 interacts with the wrapping and unwrapping of functions when you
6261 trace them. (Actually, the functionality isn't there yet, but at least
6262 the interface specification is there. Hopefully, the functionality will
6263 arrive with some future maintenance release.)
6264 * removed host-oops.lisp
6265 * changed signature of QUIT function to allow UNIX-CODE argument
6266 * fixed READ-SEQUENCE bug
6267 * tweaked verbose GC output so that it looks more like the progress
6268 output that ANSI specifies for functions like LOAD
6269 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6270 * added <http://sbcl.sourceforge.com> to the banner information printed by