1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.50:
3 * enhancement: ASDF has been updated to version 2.017.
4 * enhancement: the --core command line option now accepts binaries with
6 * enhancement: when built with :sb-core-compression, core files (regular
7 or executable) can be compressed with zlib. Use the :COMPRESSION
8 argument to SAVE-LISP-AND-DIE to specify a compression level.
9 * enhancement: --[no-]merge-core-pages determines whether the runtime
10 hints the operating system that identical core pages between SBCL
11 processes should share the same physical memory. Default is to only
12 enable this for compressed cores.
13 * optimization: SLEEP no longer conses.
14 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
15 or bit-vectors when using the standard pretty-print dispatch table.
16 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
18 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
19 AREF, CHAR, etc. (lp#826971)
20 * bug fix: compiler-errors causes by integer arguments with composed of multiple
21 ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
22 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
23 expressions. (lp#770184)
24 * bug fix: complex single float literals are correctly aligned when used
25 as arguments of arithmetic operators.
27 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
28 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
29 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
30 MAKE-SOCKET-STREAM if using SERVE-EVENT.
31 * enhancement: added support for socket keepalive timeout intervals
32 and probe counts on Linux.
33 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
34 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
35 * enhancement: added new toplevel options --quit and --non-interactive
37 * enhancement: the Windows port of SBCL now builds and runs on Wine
38 (thanks to Anton Kovalenko).
39 * enhancement: more, and more correct, SSE instruction definitions on
40 x86-64 (thanks to Alexander Gavrilov).
41 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
42 to help the processor execute spin loops, when applicable. Currently
43 implemented for x86 and x86-64.
44 * optimization: unsigned integer divisions by a constant are implemented
45 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
46 * optimization: improved type-derivation for LOAD-TIME-VALUE.
47 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
48 instructions. (lp#814688)
49 * bug fix: COERCE to unfinalized extended sequence classes now works.
50 (reported by Jan Moringen; lp#815155)
51 * bug fix: a compiler error during typecheck generation, reported by Eric
53 * bug fix: obsolete instance protocol fires when shared slots are added
55 * bug fix: fixed-format floating point printing with scaling factors.
57 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
58 backtraces. (lp#818460)
59 * bug fix: better backtraces for interrupted syscall frames on x86.
61 * bug fix: SSE comparison instructions can be disassembled even when one
62 operand is in memory. (lp#814702)
63 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
64 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
65 type information associated with the VALUES form.
66 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
68 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
69 first write (lp#561642).
70 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
71 * bug fix: bound propagation involving conversion of large bignums to
72 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
74 * bug fix: &REST to &MORE conversion still works in unsafe call to known
75 functions; reported by Lutz Euler (lp#826459).
76 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
79 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
80 * enhancement: errors from FD handlers now provide a restart to remove
81 the offending handler.
82 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
84 * enhancement: location of user or system initialization file can now easily
85 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
86 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
87 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
88 the thunk, as a keyword argument, :arguments.
89 * enhancement: constraint propagation is simplified (and sped up) when
90 COMPILATION-SPEED > SPEED.
91 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
92 * enhancement: debugger understands &MORE arguments better.
93 * optimization: extracting bits of a single-float on x86-64 has been
94 optimized. (lp#555201)
95 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
97 * optimization: local call trampolines (x86 and x86-64) are emitted
99 * optimization: implicit value cells for dynamic-extent closed-over bindings
100 on x86 and x86-64 can hold unboxed values as well.
101 * meta-optimization: improved compilation speed, especially for large
102 functions. (lp#792363 and lp#394206)
103 * bug fix: bound derivation for floating point operations is now more
104 careful about rounding possibly closing open bounds. (lp#793771)
105 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
106 backwards incompatible change in 1.0.48.27)
107 * bug fix: occasional debugger errors in when a type-error occured in a
108 function with dynamic-extent &rest list.
109 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
110 boa-construtors can be used to initialized structure slots.
111 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
112 (lp#795705, regression)
113 * bug fix: DIRECTORY works better on logical pathnames.
114 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
115 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
116 * bug fix: the compiler no longer constant-folds NaNs in
117 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
118 * bug fix: FORMAT now handles floating point rounding correct, eg.
119 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
121 * bug fix: style warning during lambda-list introspection of generic
122 functions with both optional and key argments.
123 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
125 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
128 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
129 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
130 interrupts for its body.
131 * enhancement: source locations are now available for files loaded as
132 source, compile-time-too evaluation, and initialization files.
133 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
134 virtual source-file information, eg. overriding input-file of COMPILE-FILE
135 when a temporary file is used for compilation.
136 * enhancement: ASDF has been updated to version 2.015.3.
137 * enhancement: backtraces involving frames from the default evaluator are
139 * enhancement: RUN-PROGRAM works with user-defined binary input and output
141 * enhancement: more informative compile-time warnings and runtime errors for
142 type-errors detected at compile-time.
143 * enhancement: deadlock detection for mutexes and spinlocks.
144 * enhancement: dynamic-extent for &rest lists stack allocate only their
145 spines, not their argumets. While portable code should not rely on this,
146 particularly in combination with inlining, it should make dynamic-extent
147 easier to use safely.
148 * enhancement: SB-POSIX improvements:
149 ** WNOHANG and WUNTRACED are exported.
150 ** SYSCALL-ERROR now also provides the name of the failing system call.
151 * enhancement: --script improvements:
152 ** errors on standard input, output, and error streams are handled and
153 cause scripts to exit silently, making them easier to use in shell
155 ** backtraces from scripts now go to standard error instead of the
156 terminal even if one is available.
157 ** --script can be an argument, causing the script to be loaded from
159 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
160 strings to foreign memory.
161 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
162 a file, making it easier to understand heap dynamics.
163 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
164 allows the compiler to automatically elide rest-list allocation so long as
165 the call sites are in functions that the compiler knows cannot escape.
167 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
168 especially in safe code when none of the required arguments have changed
170 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
171 uninterruptible, as well as blocking reads from socket streams created
172 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
173 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
174 from the to-char if the from-char is not a dispatch-macro character.
175 * bug fix: references to undefined variables in function calls that are
176 optimized away now signal a runtime error. (lp#722734)
177 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
178 types from a function defined in the same file. (regression from
180 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
182 * bug fix: spurious errors during QUIT when standard streams were closed.
184 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
185 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
186 years, is now no longer supported.
187 * enhancement: read() and write() have been added to SB-POSIX.
188 * enhancement: types of DEFSTRUCT constructors are proclaimed more
189 accurately, allowing better typechecking of call-sites.
190 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
191 are no longer caught. (reverted to pre 1.0.34 behaviour)
192 * optimization: slightly faster ISQRT. (lp#713343)
193 * bug fix: better support for Solaris /bin/sh in sh-based tests.
194 * bug fix: TRACE behaves better when attempting to trace undefined
195 functions. (lp#740717)
196 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
197 to (FUNCALL #'(LAMBDA ...) ...).
198 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
199 a compile-time error. (lp#720382)
200 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
202 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
203 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
204 optimization. (regression from 1.0.45.18/1.0.46.15)
205 * bug fix: package locks did not protects against compile-time side-effects
206 of DEFUN. (lp#675584)
207 * bug fix: --dynamic-space-size argument is validated more carefully.
209 * bug fix: memory fault from printing a malformed simple-condition.
211 * bug fix: redefining classes so that slot-definition classes change now
212 engages the obsolete instance protocol. (lp#766271)
213 * bug fix: constant improper lists could break source coverage recording.
215 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
218 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
219 * bug fix: fix mach port rights leaks in mach exception handling code on
220 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
222 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
223 * enhancement: redefinition warnings for macros from different files. (lp#434657)
224 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
225 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
226 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
227 processed using EVAL -- now the appropriate toplevel form is reported instead.
228 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
229 declarations. (lp#726331)
230 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
231 that NIL/NULL is excluded from the type.
232 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
234 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
236 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
237 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
238 stack-allocated values out of their dynamic-extent. (lp#310175)
239 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
240 x86-64 builds caused a type-error.
241 * bug fix: calling COMPILE with something else than a lambda-expression as the
242 second argument reports a more sensible error. (lp#718905)
243 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
244 are detected. (lp#520607)
245 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
247 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
248 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
249 methods. (regression from 1.0.45.18)
250 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
251 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
252 * bug fix: several foreign functions accepting string also accepted NIL and
253 consequently caused a memory fault at 0 now signal a type-error instead.
255 * bug fix: under rare circumstances, constraint propagation could rewrite a
256 variable reference to refer to a variable not in scope, causing an error
257 during physical environment analysis when attempting to close over the
258 variable. (lp#551227)
259 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
261 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
262 * enhancement: largefile support on Solaris.
263 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
264 arguments (lp#710017)
265 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
266 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
268 * optimization: ERROR and CERROR are approximately 5 times faster.
269 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
270 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
271 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
272 up instance creation in those cases.
273 * optimization: arithmetic operations with multiple constant arguments in now
274 have them reduced at compile-time. (lp#676414)
275 * optimization: determining current character position on string-streams for
276 pretty-printing was overly slow.
277 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
278 lifetime analysis to overwrite closed-over variables (lp#681092).
279 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
280 were not handled correctly (lp#713063).
281 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
283 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
284 mistake. (lp#667297).
285 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
286 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
287 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
288 unintern the wrong symbol with the same name. (lp#693796)
289 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
290 making it possible to restore the initial table if it has been messed up.
293 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
294 * enhancement: ~/ and ~user/ are treated specially in pathnames.
295 Refer to documentation for details.
296 * enhancement: ASDF has been updated to version 2.010.
297 * optimization: mutated closed-over variables that are only accessed by
298 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
299 declared to be DYNAMIC-EXTENT) are stored directly in their containing
300 stack frame, rather than allocating a VALUE-CELL (lp#586103).
301 * optimization: UNWIND-PROTECT cleanup functions are now declared
303 * bug fix: backtracing function with &REST arguments now shows the full
304 argument list. (lp#310173)
305 * bug fix: return types for functions with complex lambda-lists are now
306 derived properly (lp#384892)
307 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
308 long string arguments slowed the compiler down to a crawl.
309 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
310 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
311 in the DEFMETHOD body.
312 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
313 messages, being instead replaced with the corresponding function name.
314 * bug fix: don't derive overly complex unions of numeric types for arithmetic
315 operators. (lp#309448)
317 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
318 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
319 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
320 * enhancement: ALLOCATION-INFORMATION also provides the page the object
322 * enhancement: default dynamic-space size can be configured at build-time
323 without touching source, using the --dynamic-space-size argument to make.sh.
324 * enhancement: DESCRIBE recognizes symbols naming optimization policy
325 qualities, and mentions ALWAYS-BOUND declarations.
326 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
328 * enhancement: ASDF has been updated to 2.009.
329 * enhancement: the system detects known type-erros in calls better,
330 signalling a full warning about violated proclaimed FTYPEs and violations
331 of derived FTYPEs within the same file, including self-calls.
332 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
333 * optimization: constant-folding exploits numeric and character types, in
334 addition member types.
335 * optimization: numeric, character and member types that are inhabited by
336 exactly one value are tested with EQL.
337 * optimization: more conditional branches are eliminated during IR1.
338 Branches are simplified before performing if/if-conversion, and simple
339 equivalent branches (that only read the same constant or variable) are
341 * improvements to the Windows port:
342 ** change: canonical unparsing form for pathname namestrings now uses / as
343 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
344 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
345 on Windows. (thanks to Kalyanov Dmitry)
346 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
348 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
349 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
350 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
351 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
353 * bug fix: interrupts arriving during CL:OPEN caused an error.
354 * bug fix: overeager character buffering could cause input to block
355 spuriously when reading from a pipe (lp#643686)
356 * bug fix: more efficient timer expiry should avoid starvation on systems
357 where number of SIGALRMs per second is restricted. (lp#375515)
358 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
359 * bug fix: compile-times no longer scale linearly with the size of
360 quoted lists in source-code. (lp#654289)
361 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
362 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
363 so badly. (lp#654485)
364 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
365 an error for eg. STRUCTURE. (lp#458015)
366 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
367 (lp#613871, thanks to Roman Marynchak)
368 * bug fix: more reliable &REST list type derivation. (lp#655203)
369 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
370 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
371 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
372 also declared NOTINLINE. (lp#655581)
373 * bug fix: the compiler could attempt to emit constant left shifts of
374 greater value than n-word-bits. (lp#309063)
375 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
376 type information for the function being set. (lp#659220)
377 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
378 containing self-calls were recompiled with a new signature, and failed
379 to warn when a self-call using the old signature was left in. (lp#655126)
380 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
381 :DEFAULT when the default external had character size other than 8 bits.
383 * bug fix: derived types of functions in the same file were implicitly
384 trusted, leading to potential heap corruption when those function were
385 defined incompatibly. (lp#657499)
386 * bug fix: existing ASDF source registries are ignored when building
388 * bug fix: short-form DEFSETF checks that the second argument is a symbol
389 (lp#655824, thanks to Roman Marynchak)
390 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
391 package-lock violation was detected. (lp#660752)
392 * bug fix: the system can store different docstrings for a single function
393 under different names. (lp#661631, regression from 1.0.29.24)
394 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
395 properly. (lp#384801)
396 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
397 of specified length could confuse the type derivation in unsafe code.
399 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
400 fork with multiple Lisp threads running is made on every platform,
401 not just Darwin. (lp#451111)
402 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
403 around when core was saved, which could cause undefined behaviour when the
405 * bug fix: Allow UNTRACE of functions that are no longer defined
406 (lp#667657, thanks to Attila Lendvai)
407 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
408 compile-time warning (lp#664373, thanks to Stas Boukarev)
410 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
411 * incompatible change: FD-STREAMS no longer participate in the serve-event
412 event-loop by default. (lp#316072)
413 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
414 affects streams from CL:OPEN.
415 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
416 default, but this is liable to change: applications needing serve-event
417 for socket streams should explicitly request it using :SERVE-EVENTS T
419 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
421 * enhancement: CLOS effective method functions and defclass slot typechecking
422 function now have debug names for use in backtraces and profiles.
423 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
425 * enhancement: symbols are printed using fully qualified names in several
426 error and warning messages which are often associated with package
427 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
428 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
429 thanks to Andrew Golding)
430 * bug fix: reading /proc files on Linux works. (lp#425199)
431 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
433 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
434 breaking code that tried to write the value of a printer control variable.
435 (lp#581564, thanks to Stas Boukarev)
436 * bug fix: WRITE compiler macro did not handle output stream designators
437 correctly. (lp#598374, thanks to Stas Boukarev)
438 * bug fix: better availability of names of foreign functions in backtraces
439 on Linux. (lp#626962, thanks to Stas Boukarev)
440 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
441 lp#627581, thanks to Josh Elsasser and Jim Wise)
442 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
443 thanks to Josh Elsasser)
444 * bug fix: using aliases for builtin classes as defmethod specializers
445 without adding DEFTYPEs for them works. (lp#618387)
446 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
448 * bug fix: legally dynamic-extent lists and vectors used as
449 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
450 * bug fix: inline-expansion creating references to dead lambda-variables
451 (lp#454681, thanks to Alexey Dejneka)
452 * bug fix: better error message for bogus numerical arguments to RANDOM.
453 (lp#598986, thanks to Stas Boukarev)
454 * bug fix: the compiler occasionally inlined references from incompatible
455 environments occurs. (lp#308951)
456 * bug fix: the compiler threw an error when trying to compile a local
457 function (labels or flet) known to take a specialized complex argument.
458 (not in launchpad, reported by sykopomp in #lispgames)
459 * bug fix: package-locks failed to protect against compile-time effects of
460 DEFUN when the symbol previously had a macro definition. (lp#576637)
461 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
462 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
463 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
464 * bug fix: evaluation in debugger REPL works using the global context when
465 in frames that do not have sufficient debug information.
466 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
468 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
470 * bug fix: interrupt taking longer than the requested period caused SLEEP
471 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
473 changes in sbcl-1.0.42 relative to sbcl-1.0.41
475 ** Cross-compilation host is now specified to make.sh using
476 command-line argument --xc-host=<command> instead of a positional
477 argument. (thanks to Daniel Herring)
478 ** Install location can be specified to make.sh using command-line
479 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
480 * optimization: The default implementation of
481 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
482 * enhancement: Explicit memory barrier operations are now available for use
483 by multithreaded code. See documentation for details.
484 * enhancement: Experimental support for threading on Linux/PPC.
485 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
486 * bug fix: EXPT signals an error if first argument is a zero and second
487 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
488 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
489 (lp#576594, thanks to Roman Marynchak)
490 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
491 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
493 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
494 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
495 cached, leading to many fewer expensive calls to
496 COMPUTE-APPLICABLE-METHODS.
497 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
498 CLASS argument, search for and call an appropriate optimized ctor function
500 * bug fix: WRITE always returns the correct value.
502 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
503 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
504 * bug fix: Name conflicts between symbols passed as arguments to a single
505 call to IMPORT no longer add multiple symbols with the same name to the
506 package (detectable via DO-SYMBOLS).
507 * bug fix: support building without the dlshim on darwin x86 and x86-64
509 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
511 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
512 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
514 * bug fix: linkage-table entries on PPC now no longer overflow their
515 space allocation (potentially causing crashes if they are written out
517 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
518 platforms, preventing the GC from seeing stale pointers on the control
519 stack in subsequent GCs (which would, and does, break invariants).
520 * bug fix: 32-bit unicode external formats now work on big-endian systems.
521 * bug fix: Literal characters with code points greater than about 32767
522 now work on PPC UNICODE builds.
523 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
524 high order bits are explicitly cleared out. In some contrived situations,
525 this could lead to wrong results in mixed real/complex float arithmetic.
526 * bug fix: Fix function/macro redefinition warnings when building with
527 clisp. (lp#576787, thanks to Josh Elsasser)
528 * new platform: experimental support for ppc/openbsd (thanks to Josh
530 * bug fix: Floating-point traps now work on ppc/linux.
532 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
533 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
534 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
535 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
536 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
537 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
538 SB-THREAD:GRAB-MUTEX.
539 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
540 contain additional data structures and tools for concurrent programming;
541 at the moment it contains a lock-free queue, and a lock-free mailbox
543 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
544 GET-MUTEX but takes &key rather than &optional parameters. Also added
545 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
547 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
548 SB-THREAD:WAIT-ON-SEMAPHORE.
549 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
551 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
552 conditions to defer the deadline for forever.
553 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
555 * enhancement: errors from NO-APPLICABLE-METHOD and
556 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
557 generic function call.
558 * enhancement: SB-BSD-SOCKET improvements
559 ** sockets and socket streams now have a more informative printed
560 representation based on the corresponding SOCKET-NAME and
562 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
564 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
565 CL:CLOSE when appropriate, and no longer disassociates the stream
566 from the socket if close failed. (lp#543951)
567 * improvements to the instrumenting profiler
568 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
569 ** optimization: counters no longer use locks for the overflow mode.
570 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
571 incurred an off-by-one miscount.
572 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
573 * enhancement: improved DEFMETHOD pretty-printing.
574 * enhancement: perform range reduction when arguments are too large for
575 x87's transcendentals (instead of returning 0). (lp#327192)
576 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
577 some of CL-PPCRE's macros. (lp#570079)
578 * enhancement: our machine code is slightly less hostile to valgrind on
580 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
581 to Robert Swindells and Aleksej Saushev)
582 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
583 * bug fix: a rare case of startup-time page table corruption.
584 * bug fix: a semaphore with multiple waiters and some of them unwinding due
585 to timeouts could be left in an inconsistent state.
586 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
587 * bug fix: misoptimization of multiplication by one in
588 (SB-C::FLOAT-ACCURACY 0) policies.
589 * bug fix: miscounts in SB-PROFILE.
590 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
591 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
592 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
593 up itself" (March 2010) for further details.
594 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
595 against length of the list if the element is found before the specified
596 END is reached. (thanks to Alec Berryman, lp#554385)
597 * bug fix: errors signalled during package graph modification no longer
598 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
599 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
600 :SB-DOC feature. (lp#552564)
601 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
602 * bug fix: more robust runtime executable path detection. (lp#375549)
603 * bug fix: GCD always returns positive values. (lp#413680)
604 * bug fix: Converting division to multiplication by reciprocal handles
606 * bug fix: We were too eager in eliding range reduction tests on x87.
607 The maximal magnitude is 2^63, not 2^64.
608 * bug fix: Transforms for TRUNCATE don't die when the result is completely
610 * bug fix: Maybe restore buildability on Alpha.
611 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
613 * bug fix: RANDOM-STATE can be printed readably again.
614 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
615 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
616 types) could result in type mismatches during compilation.
618 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
619 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
620 stack frame thrown from.
621 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
622 compiler optimization qualities inside dynamic extent of its body.
623 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
624 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
626 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
627 constraint propgation, allowing better compilation eg. when used to
628 access structures with WITH-SLOTS. (lp#520366)
629 * optimization: the compiler is now more aware of the type of the underlying
630 storage vector for multidimensional simple arrays resulting in better code
631 for accessing such arrays.
632 * optimization: passing NIL as the environment argument to TYPEP no longer
633 inhibits optimizing it. (lp#309788)
634 * optimization: more efficient register usage when handling single-float
635 arguments on x86-64. (thanks to Lutz Euler)
636 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
637 pre-allocated temporary vectors. (lp#496249)
638 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
639 in :INITIAL-CONTENTS. (lp#523612)
640 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
641 functions. (lp#524707)
642 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
643 WITH-SLOTS usages during compilation.
644 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
645 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
646 all x86oid platforms with :UD2-BREAKPOINTS target feature.
647 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
648 instruction (tested on x86oid linux with ud2-breakpoints).
649 * bug fix: slam.sh now works on win32.
650 * bug fix: better differences of numeric types. (lp#309124)
651 * bug fix: arrays declared intersection and union types can have their
652 upgraded element type derived. (lp#316078)
653 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
654 threads started during profiling. (lp#472499)
655 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
657 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
658 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
659 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
660 values instead of signaling an error. (lp#309093)
661 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
663 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
664 declarations (lp#497321)
665 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
666 and failed to detect circular lists (lp#452008)
667 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
669 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
670 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
671 due to it, so that handlers can run.
672 * bug fix: reparsing undefined types if they have become defined since
674 * bug fix: missing &REST type in a proclamation for a function with both
675 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
676 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
677 expanded calls (lp#542174)
678 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
679 than just at toplevel form.
681 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
682 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
683 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
684 but work on type specifiers.
685 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
686 to name a type specifier.
687 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
688 specifier is valid where "valid" basically means "would be accepted as
689 second argument of TYPEP".
690 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
691 returns the function's declared, or derived FTYPE.
692 * new feature: SB-POSIX now supports accessing the d_ino member of
693 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
694 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
695 provide for seeding a RANDOM-STATE object with user-provided data or
696 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
697 attempt to initialize the returned state from the operating system's
698 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
699 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
700 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
701 * bug fix: Fix grammar and style issues for the docstrings of
702 printer-related variables and functions. (Thanks to mon_key; launchpad
704 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
706 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
707 in a row even though a handler defered the deadline long into the
709 * bug fix: A deadline handler was run without interrupts enabled for a
710 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
711 in infinitely spinning, non-killable threads.
712 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
713 before reaching the erring stack frame.
714 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
715 real power. (launchpad bug lp#525949)
716 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
717 GENCGC platforms. (launchpad bug lp#529014)
718 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
719 (launchpad bug lp#525916)
720 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
721 (Thanks to Robert Goldman)
723 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
724 * optimization: ROUND with a single single-float or double-float argument
725 is properly inlined when possible.
726 * optimization: Slightly better code is generated for integer<->float
727 conversions and for single-float<->double-float conversions on x86-64.
728 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
729 code for 32-bit and 64-bit rotations on x86-64.
730 * bug fix: The install script changes the ownership of directories as well
731 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
732 launchpad bug lp#508485)
733 * bug fix: TRUNCATE with a single single-float or double-float argument is
734 properly inlined when possible. (launchpad bug lp#489388)
735 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
736 no longer causes a compiler error on x86 and ppc.
737 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
738 always relative to *READTABLE* rather than the passed argument.
740 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
741 * minor incompatible change: threading support is now enabled by default
743 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
745 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
746 are now caught and reported just like errors during macroexpansion.
747 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
748 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
749 * enhancement: ASDF systems can now depends on SB-QUEUE.
750 * fixes and improvements related to Unicode and external formats:
751 ** bug fix: error handling and restart usage in the ucs-2 external format
753 ** there is now an implementation of the ucs-4 external format.
754 ** the utf-16 and utf-32 external formats are supported.
755 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
756 in the environment. setenv() and unsetenv() are also provided. (reported by
757 Fare Rideau; launchpad bug lp#460455)
758 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
759 loading. This ensures sensible errors for .FASL files from other
760 implementations on case-insensitive filesystems. (reported by Willem
761 Broekema; launchpad bug lp#489417)
762 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
763 Willem Broekema; launchpad bug lp#489698).
764 * bug fix: some minor code rearrangements to reenable warning-free building
765 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
766 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
768 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
771 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
772 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
773 * improvement: support O_LARGEFILE access to files larger than 2GB on
774 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
775 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
776 definitions for methods specializing on the passed class itself.
777 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
778 definitions for methods specializing on the passed class itself, or on
780 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
781 about itself during the build (e.g. for M-? in Slime), if this flag is
782 enabled in customize-target-features.lisp. This will increase the core
783 size by about 5-6mb, though, so it's mostly interesting to SBCL
785 * new feature: various GENCGC tuning parameters have been experimentally
786 documented and exported from SB-EXT. See documentation for details.
787 * fixes and improvements related to Unicode and external formats:
788 ** the Unicode character database has been upgraded to the
789 Unicode 5.2 standard, giving names and properties to a number of new
790 characters, and providing a few extra characters with case
792 ** improvement: restarts for providing replacement input/output on coding
793 errors for fd-stream external formats.
794 ** improvement: where :<encoding> is a keyword corresponding to an
795 external format the system supports, it is now possible to specify
796 (:<encoding> :replacement <character>) as an external format which will
797 automatically substitute <character> on encoding or decoding errors for
798 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
800 ** improvement: the file streams underlying the standard streams (such as
801 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
802 which uses the replacement mechanism to handle encoding errors,
803 preventing various infinite error chains and unrecoverable I/O
805 ** minor incompatible change: the utf-8 external format now correctly
806 refuses to encode Lisp characters in the surrogate range (char-codes
807 between #xd800 and #xdfff).
808 ** fix a typo preventing conversion of strings into octet vectors
809 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
811 ** fix a bug in the octet multibyte handling of decoding errors and the
812 USE-VALUE restart. (launchpad bug lp#314939)
813 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
814 restart on fd-stream decoding errors.
815 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
816 error is near the end of file.
817 ** fix a double-error case in unibyte octet conversions, when the first
818 use of USE-VALUE is ignored.
819 ** fix bugs in handling of undefined code points in unibyte encodings.
820 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
821 streams after an UNREAD-CHAR.
822 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
823 object is allocated in a boxed region of dynamic space.
824 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
825 fork with multiple Lisp threads running is made, instead of going
826 ahead with unpredictable consequences. (reported by Leslie Polzer)
827 * bug fix: uses of slot accessors on specialized method parameters within
828 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
829 error while finalizing the class. This fix may cause classes with slot
830 accessors to be finalized later than previously. (reported by Lars Rune
831 Nøstdal; launchpad bug lp#473699)
832 * bug fix: restore buildability on the MIPS platform. (regression from
833 1.0.30.38, reported by Samium Gromoff)
834 * bug fix: inspecting closures is less likely to fail with a type error.
835 * bug fix: no timer starvation when setting the system clock back.
836 (launchpad bug lp#460283)
837 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
838 standard pprint dispatch table as specified by CLHS.
839 * bug fix: give CLISP a hint about a type declaration to enable it to build
840 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
842 * bug fix: correctly dump literal objects in defaulting forms of arglists.
843 (reported by Attila Lendvai; launchpad bug lp#310132)
844 * bug fix: distinguish in type specifiers between arrays that might be
845 complex and arrays that are definitely complex. (launchpad bug lp#309129)
846 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
847 type. (reported by Levente Mészáros; launchpad bug lp#485972)
848 * bug fix: setting the value of a symbol-macro within a method in the
849 presence of type declarations works properly again. (reported by Iban
850 Hatchondo; launchpad bug lp#485019)
852 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
853 * optimization: faster FIND and POSITION on strings of unknown element type
854 in high SPEED policies. (thanks to Karol Swietlicki)
855 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
857 * improvement: better error signalling for bogus parameter specializer names
858 in DEFMETHOD forms (reported by Pluijzer)
859 * bug fix: DELETE-FILE once again works on logical pathnames (regression
861 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
863 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
864 removes previous default initargs (reported by Lars Rune Nøstdal and
866 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
867 lambda-lists. (reported by Peter Seibel)
868 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
869 correctly when starting from an executable core without saved runtime
870 options (reported by Faré Rideau, thanks to Zach Beane)
871 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
872 an optimization note instead. (reported by Martin Cracauer)
873 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
874 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
875 new process group if it doesn't need to share stdin with the sbcl
876 process. (thanks to Leslie Polzer)
877 * bug fix: SATISFIES could be misoptimized to refer to a local function.
878 (reported by Stanislaw Halik)
880 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
881 * improvement: stack allocation is should now be possible in all nested
882 inlining cases: failure to stack allocate when equivalent code is manually
883 open coded is now considered a bug.
884 * improvements related to Unicode:
885 ** the Unicode character database has been upgraded to the
886 Unicode 5.1 standard, giving names and properties to a number of new
887 characters, and providing a few extra characters with case
889 ** the system now recognizes and produces names for Unicode Hangul
891 ** the EBCDIC-US external-format is now supported for octet operations
892 (as well as for stream operations).
893 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
894 be used to output toplevel compile-time effects into a separate .CFASL
896 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
897 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
899 * optimization: TRUNCATE on known single- and double-floats is upto 25%
901 * optimization: division of floating point numbers by constants uses
902 multiplication by reciprocal when an exact reciprocal exists.
903 * optimization: multiplication of single- and double-floats floats by
904 constant two has been optimized.
905 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
906 sufficient type information is available. (thanks to Leslie Polzer)
907 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
908 known structure objects are as efficient as defstruct generated accessors.
909 * optimization: unused vector creation can now be optimized away.
910 * improvement: ASDF systems can now depends on SB-INTROSPECT.
911 * improvement: a STYLE-WARNING is signalled when a generic function
912 clobbers an earlier FTYPE proclamation.
913 * improvement: the compiler is able to track the effective type of
914 generic function across method addition and removal even in the
915 absence of an explicit DEFGENERIC.
916 * improvement: DESCRIBE now reports on symbols naming undefined
917 but assumed or declared function as well.
918 * improvement: recompilation of systems using SB-GROVEL now works
919 (thanks to Leslie Polzer)
920 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
921 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
923 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
924 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
925 well as user defined declaration names.
926 ** VARIABLE-INFORMATION is now aware of alien variables.
927 * improvement: improved address space layout on OpenBSD (thanks to Josh
929 * improvement: pretty-printing of various Lisp forms has been improved
930 (thanks to Tobias Rittweiler)
931 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
932 unused were deleted in safe code. (reported by John Fremlin)
933 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
935 * bug fix: some out-of-line array predicates were missing (reported by
937 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
939 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
940 (thanks to Larry D'Anna)
941 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
942 as well. (reported by Josh Elsasser)
943 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
944 leading to possible attempts to delete the same file twice. See docstring
945 on DELETE-FILE for details. (reported by John Fremlin)
946 * bug fix: DELETE-FILE once again deletes the file named by the pathname
947 designator argument, rather than its truename. (reported by Luis
949 * bug fix: the low-level debugger had 32-bit assumptions and was missing
950 information about some array types. (thanks to Luis Oliveira)
951 * bug fix: moderately complex combinations of inline expansions could
952 be miscompiled if the result was declared to be dynamic extent.
953 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
954 form (+ <variable> <integer>) were miscompiled under certain
956 * bug fix: in some cases no compiler note about failure to stack allocate
957 was emitted, even if the objects were in fact heap allocated.
958 * bug fix: minor violation of "otherwise inaccessible" rule for stack
959 allocation could cause objects users might reasonably expect to
960 be heap allocated to be stack allocated.
961 * bug fix: DESCRIBE signalled an error for generic functions under
962 certain circumstances. (thanks to Leslie Polzer)
963 * bug fix: Fixed spelling of an error message.
965 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
966 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
967 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
968 of SB-THREAD:THREAD-ERROR-THREAD.
969 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
970 * new feature: docstrings for local and anonymous functions are no longer
971 discarded. (thanks to Leslie Polzer)
972 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
973 values in other threads.
974 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
975 about object allocation.
976 * optimization: division of a real float by a complex float is implemented
977 with a specialised code sequence.
978 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
979 keywords is an order of magnitude faster.
980 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
981 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
982 methods, and similarly for non-standard metaclass classes as long as there
983 are no methods additional on MAKE-INSTANCE.
984 * optimization: more efficient type-checks for FIXNUMs when the value
985 is known to be a signed word on x86 and x86-64.
986 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
987 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
989 * optimization: compiler is smarter about delegating argument type checks to
991 * optimization: several character functions are now compiled somewhat more
992 efficiently. (reported by Lynn Quam)
993 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
994 * improvement: less unsafe constant folding in floating point arithmetic,
995 especially for mixed complex/real -float operations.
996 * optimization: constant double and single floats are stored in native
997 unboxed format on x86[-64].
998 * optimization: smarter code for arithmetic operations with constant floats,
999 complex floats, or integers on x86[-64].
1000 * optimization: smarter code for conjugate/multiplication of float complexes
1001 and abs/negate of floats on x86-64.
1002 * optimization: more efficient complex float and real float operations on
1004 * improvement: complex float division is slightly more stable.
1005 * improvement: DESCRIBE output has been reworked to be easier to read and
1006 contains more pertinent information.
1007 * improvement: failure to provide requested stack allocation compiler notes
1008 provided in all cases (requested stack allocation not happening without a
1009 note being issued is now considered a bug.)
1010 * bug fix: SB-POSIX exports the documented types and functions
1011 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1012 types. (reported by "abhi")
1013 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1014 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1015 (thanks to Paul Khuong)
1016 * bug fix: looping around HANDLER-CASE could silently consume stack space
1017 on each iteration. (reported by "foobar")
1018 * bug fix: better error signalling when calls to functions seeking elements
1019 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1020 (reported by Tobias Rittweiler)
1021 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1022 directory components now works as it used to. (various prolems reported by
1023 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1024 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1025 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1026 * bug fix: bogus undefined variable warnings from fopcompiled references to
1027 global variables. (thanks to Lars Rune Nøstdal)
1028 * bug fix: foreign function names should now appear in backtraces on
1029 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1030 * bug fix: SETF compiler macro documentation strings are not discarded
1032 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1033 (thanks to Alex Plotnick)
1034 * bug fix: SLEEP accepts large integer arguments, truncating them to
1035 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1036 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1037 * bug fix: compiler notes for expensive slot type checks could be emitted
1038 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1040 changes in sbcl-1.0.29 relative to 1.0.28:
1041 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1042 https://bugs.launchpad.net/sbcl
1043 Bugs can be reported directly there, or by sending email to
1044 sbcl-bugs@lists.sourceforge.net
1045 (no subscription required.)
1046 * minor incompatible change: under weak type checking policy integer
1047 types are weakened less aggressively.
1048 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1049 allowed to return, which causes SBCL to quit with exit status 0. Previously
1050 if the function returned with a small integer return value, that value
1051 was accidentally reused as the exit status.
1052 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1053 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1054 :HASH-FUNCTION argument. Refer to user manual for details.
1055 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1057 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1058 microseconds since the Unix epoch on all platforms.
1059 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1060 allows the compiler to safely elide boundedness checks for special
1062 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1063 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1064 efficiency measure for threaded platforms, but also valueable in
1066 * new feature: UNC pathnames are now understood by the system on Windows.
1067 * optimization: the compiler uses a specialized version of FILL when the
1068 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1070 * optimization: accesses to potentially non-simple arrays where element type
1071 is known are 50% faster.
1072 * optimization: compiler now generates faster array typechecking code.
1073 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1075 * optimization: multidimensional array accesses in the absence of type
1076 information regarding array rank are approximately 10% faster due to
1077 open coding of ARRAY-RANK.
1078 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1079 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1081 * optimization: result of call to VECTOR can now be stack allocated.
1082 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1083 as long as the resulting array is one-dimensional and has a known
1084 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1085 length of the list matches the known length of the vector does not
1086 allocate the list as an intermediate step. Ditto for VECTOR and simple
1088 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1089 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1090 known element type, and is known to be simple and one dimensional.
1091 * improvement: SBCL now emits a compiler note where stack allocation was
1092 requested but could not be provided (not in all cases, unfortunately)
1093 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1094 * improvement: pretty-printing loop has been implemented properly. (thanks
1095 to Tobias Rittweiler)
1096 * documentation: CLOS slot typechecing policy has been documented.
1097 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1098 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1099 pointer, leading to memory faults. (thanks to Bart Botta)
1100 * bug fix: better floating point exception handling on x86/OpenBSD.
1101 (thanks to Josh Elsasser)
1102 * bug fix: exit status from QUIT when called under --script was lost
1103 (reported by Hubert Kauker)
1104 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1105 same implementation of FILL to initialize the array, even if a more
1106 efficient one was available (reported by Stas Boukarev, thanks to
1108 * bug fix: potential miscompilation of array stack allocation on x86 and
1109 x86-64. (reported by Time Tossavainen)
1110 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1111 result in their subforms being treated as top level forms. (reported by
1113 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1114 than a machine register could leave garbage in the high bits of the
1115 result register (bug 316325).
1116 * bug fix: disable address space randomization Linux/x86-64 as well,
1117 not just x86-64. (reported by Ken Olum)
1118 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1119 generate incorrect code.
1120 * bug fix: #201; type inference for CONS and ARRAY types could derive
1121 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1122 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1123 could not be assigned to or bound with PROGV. (reported by Lorenz
1125 * bug fix: the value of CL:- in the inspector was the previous expression
1126 evaluated rather than the expression being evaluated.
1127 * bug fix: constants can no longer be locally declared special.
1128 * bug fix: signals delivered to threads started from foreign land (read:
1129 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1130 thread by blocking all signals and resignalling.
1131 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1132 from :INITFORM, if any.
1134 changes in sbcl-1.0.28 relative to 1.0.27:
1135 * a number of bugs in cross-compilation have been fixed, with the ultimate
1136 result that building under (at least) clisp should be much more reliable.
1137 * minor incompatible changes: echo-streams now propagate unread-char to the
1138 underlying input stream, and no longer permit unreading more than one
1140 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1141 frames, allowing for instance more reliable backtraces.
1142 * improvement: the debugger REPL can now reference lexical variables
1143 by name directly for code compiled with (DEBUG 3).
1144 * improvement: errors from malformed declarations now have better source
1145 paths associated with them. (thanks to Tobias Rittweiler)
1146 * optimization: faster local calls on x86/x86-64
1147 * bug fix: some error messages for out-of-bound array indexes confused the
1148 index and the bound. (thanks to Stas Boukarev)
1149 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1151 * bug fix: running regressions tests in shells without OSTYPE set now works.
1152 (reported by Harald Hanche-Olsen)
1153 * bug fix: more robust static space exhaustion signalling from
1154 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1155 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1156 docstring away instead of storing it under names such as (LAMBDA (X)).
1157 (reported by Leslie Polzer)
1158 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1159 (thanks to Ole Arndt for the patch)
1160 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1161 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1162 potentially-invalid effective methods in its cache.
1163 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1164 instances as well (thanks to Paul Khuong)
1165 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1166 SB-POSIX:WAITPID and their C equivalents.
1167 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1169 changes in sbcl-1.0.27 relative to 1.0.26:
1170 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1171 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1172 * improvement: the system either recovers from stack exhaustion or dies
1173 properly as opposed to leaving the user uncertain of whether the handler
1174 trampled on some random memory next to the stack or having to rely on
1175 --lose-on-corruption (which is still a good idea to use in production
1176 because stack exhaustion can happen in signal handlers which will likely
1178 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1179 1.0.25.37, reported by Harald Hanche-Olsen)
1180 * bug fix: work around signal delivery bug in darwin (regression from
1181 1.0.25.44, reported by Sidney Markowitz)
1182 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1184 changes in sbcl-1.0.26 relative to 1.0.25:
1185 * incompatible change: an interruption (be it a function passed to
1186 INTERRUPT-THREAD or a timer function) runs in an environment where
1187 interrupts can be enabled. The interruption can use
1188 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1189 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1190 potentially running out of stack. Keep in mind that in the absence
1191 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1192 acquiring a lock can enable interrupts.
1193 * incompatible change: GC-OFF and GC-ON are removed, as they were
1194 always unsafe. Use WITHOUT-GCING instead.
1195 * new feature: runtime option --disable-ldb
1196 * new feature: runtime option --lose-on-corruption to die at the
1197 slightest hint of possibly non-recoverable errors: running out of
1198 memory, stack, alien stack, binding stack, encountering a memory
1199 fault, etc. In the absence of --lose-on-corruption a warning is
1201 * enhancement: detect binding stack exhaustion
1202 * enhancement: detect alien stack exhaustion on x86/x86-64
1203 * improvement: generally more stable and reliable interrupt handling
1204 * improvement: there is a per thread interruption queue,
1205 interruptions are executed in order of arrival
1206 * improvement: a repeating timer reschedules itself when the it has
1207 finished, but expiration times are spaced equally. If an
1208 expiration time is in the past it will trigger after a short grace
1209 period that may give a chance to other things to run.
1210 * optimization: slightly faster gc on multithreaded builds
1211 * optimization: faster WITHOUT-GCING
1212 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1213 important locks so that the debugger/handler doesn't produce
1214 recursive errors or deadlock.
1215 * bug fix: real-time signals are not used anymore, so no more
1216 hanging when the system wide real-time signal queue gets full.
1217 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1219 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1220 * bug fix: fix random memory faults related to interrupts on alpha
1221 * bug fix: fix random memory faults related to interrupts on sparc
1222 * bug fix: fix deadlocks related to starting threads
1223 * bug fix: fix deadlines on locks on futex platforms
1224 * bug fix: restore errno in signal handlers
1225 * bug fix: fix deadlocks related to hash tables
1226 * bug fix: fix deadlocks in pcl
1228 changes in sbcl-1.0.25 relative to 1.0.24:
1229 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1230 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1231 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1232 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1233 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1234 better name and does not return values so stale on multiprocessor systems.
1235 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1237 * improvement: unithread builds keep track of MUTEX-VALUE.
1238 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1239 stream anymore making it thread safe to have a concurrent reader and
1240 a writer, for instance, in a pipe.
1241 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1242 arguments, making compiler-macros for SETF-functions able to inspect
1243 their constant arguments.
1244 * improvement: COMPILE-FILE reports times with millisecond accuracy
1245 (thanks to Luis Oliveira)
1246 * optimization: CHAR-CODE type derivation has been improved, making
1247 TYPEP elimination on subtypes of CHARACTER work better. (reported
1248 by Tobias Rittweiler, patch by Paul Khuong)
1249 * bug fix: setting alien structure fields of type struct by value now
1250 computes the right offset for the memory copy.
1251 * bug fix: compilation problem involving inlined calls to aliens with
1252 result type VOID. (reported by Ken Olum)
1253 * bug fix: #235a; sequential inline expasion in different policies no
1254 longer reuses the functional from the previous expansion site.
1255 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1256 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1257 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1258 cause an implied type redefinition. Regression from 1.0.21.29.
1259 * bug fix: sign-extension of small signed return values now works with C
1260 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1261 * improvements to the Windows port:
1262 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1263 Westfold, thanks to Rudi Schlatte)
1265 changes in sbcl-1.0.24 relative to 1.0.23:
1266 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1267 vector of a multidimensional SIMPLE-ARRAY.
1268 * new feature: the system now signals a continuable error if standard
1269 readtable modification is attempted. (thanks to Tobias Rittweiler)
1270 * new feature: DIRECTORY has been extended with a non-standard keyword
1271 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1272 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1273 has been robustified and documented better. (thanks to Robert Goldman)
1274 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1275 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1276 * tradeoff: constant FORMAT control strings are now compiled unless
1277 SPACE > SPEED (previously only when SPEED > SPACE.)
1278 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1280 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1282 * bug fix: lexical type declarations are now correctly reported by
1283 SB-CLTL2. (reported by Larry D'Anna)
1284 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1285 using UTF-8 as external format. (thanks to Luis Oliveira)
1286 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1287 are signalled correctly. (thanks to Stas Boukarev)
1288 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1289 designator. (thanks to Tobias Rittweiler)
1290 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1291 designator, and returns T instead of the function. (thanks to
1293 * bug fix: direct superclasses of STANDARD-CLASS and
1294 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1295 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1296 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1297 when no class with the named slot yet exists no longer causes a
1298 compile-time style-warning.
1299 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1300 in safe code. (reported by Didier Verna)
1301 * bug fix: #430; nested structure constructors can stack allocate.
1302 * bug fix: on some 64-bit platforms dynamic space size was truncated
1303 to #xffff0000 bytes. (reported by Benjamin Lambert)
1304 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1305 REPL unusable. (reported by Daniel Herring)
1306 * bug fix: return values of READ-SEQUENCE did not take :START into
1307 account on file streams, regressions since 1.0.12.22. (reported by
1308 Thomas Russ, patch by Paul Khuong)
1309 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1310 method specializer used to confuse permuation vector optimization.
1311 * bug fix: system inserted bogus implicit type declarations for local
1312 special variables in DEFMETHOD bodies.
1313 * bug fix: #354; duplicated frames in backtraces due to
1314 non-tail-call-optimized XEPs to functions with return type NIL
1316 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1317 initializes structure object slots according to DEFSTRUCT initforms,
1318 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1319 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1320 (reported by Bruno Haible and Stephen Wilson)
1321 * bug fix: #395; fill-pointer output streams used now support
1322 element-type BASE-CHAR as well.
1323 * bug fix: compiler error when attempting to derive return value of
1324 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1326 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1328 * bug fix: Mac OS X binaries should now be portable between Leopard
1331 changes in sbcl-1.0.23 relative to 1.0.22:
1332 * enhancement: when disassembling method functions, disassembly
1333 for the associated fast function is also produced.
1334 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1336 * optimization: printing with *PRINT-PRETTY* true is now more
1337 efficient as long as the object being printed doesn't require
1338 special handling by the pretty printer.
1339 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1340 now interact correctly with type declarations.
1341 * partial bug fix: PCL detects infinite recursion during wrapper
1342 validation. (thanks to Attila Lendvai)
1343 * bug fix: #426; nested function calls are inlined properly.
1344 Previously if FOO was an inline function, in calls of the form
1345 (FOO (FOO ...)) the outer call was not inlined.
1346 * bug fix: long long arguments passed in registers to alien
1347 functions on PowerPC Linux and NetBSD are now handled correctly
1348 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1350 changes in sbcl-1.0.22 relative to 1.0.21:
1351 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1352 for the shared object in the current directory, but passes the native
1353 namestring of the designated pathname to the operation system's shared
1354 object loading function as-it.
1355 * minor incompatible change: --disable-debugger toplevel option now takes
1356 effect before processing of initialization files and --eval or --load
1358 * new feature: new commandline argument: --script, which supports
1359 shebang lines. See documentation for details. (based on work by
1361 * new feature: SAVE-LISP-AND-DIE can save current values of
1362 --dynamic-space-size and --control-stack-size in the executable core,
1363 causing it to skip normal runtime option processing. See documentation
1364 for details. (thanks to Zach Beane)
1365 * enhancement: inoccous calls to EVAL or generic functions dispatching
1366 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1367 * enhancement: the system no longer resignals errors from --load and
1368 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1369 associated with the original error to be lost. (thanks to Ariel
1371 * enhancement: :DONT-SAVE keyword argument has been added to
1372 LOAD-SHARED-OBJECT for controlling interaction with
1373 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1374 the effects of an earlier LOAD-SHARED-OBJECT call.
1375 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1376 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1377 provided. (reported by Cedric St-Jean)
1378 * bug fix: circularity handling in the reader did not treat raw
1379 structure slots correctly. (reported by Cedric St-Jean)
1380 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1381 file descriptors when there were none.
1382 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1383 was broken. (reporteed by Willem Broekema)
1384 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1385 pathnames without a directory.
1386 * bug fix: COMPILE-FILE did not warn about undefined variable
1387 references at toplevel, and LOAD of the resulting fasl did
1388 not signal an error.
1389 * bug fix: functions with non-required arguments used to end up with
1390 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1391 * bug fix: redefining a function with non-required arguments didn't
1392 update the system's knowledge about its call signature properly.
1393 * bug fix: fixed #431; incompatible alien record type redefinitions
1394 are detected and handled. (reported by Neil Haven)
1395 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1396 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1398 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1399 after alien stack frames.
1400 * bug fix: strings passed to mk{s,d}temp lacked null termination
1402 changes in sbcl-1.0.21 relative to 1.0.20:
1403 * new feature: the compiler is able to track the effective type of a
1404 generic function across method addition and removal.
1405 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1406 appropriately typed structure slots without locking.
1407 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1408 information like those gathered by TIME using a programming-friendly
1410 * new feature: TIME reports time taken even if the form performs a
1411 non-local transfer of control.
1412 * enhancement: reduced conservativism on GENCGC platforms: on
1413 average 45% less pages pinned (measured from SBCL self build).
1414 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1415 mutate constant symbols or violate declaimed type of the symbol.
1416 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1417 sleeping on the semaphore in heavily contested semaphores.
1418 * bug fix: semaphores and condition variables were not interrupt
1420 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1421 owned by other threads anymore.
1422 * bug fix: FIND on lists called KEY outside the specified
1423 subsequence. (reported by budden)
1424 * bug fix: LOG doesn't use single-float intermediate results when
1425 given mixed integer and double-float arguments, leading to better
1426 precision. (reported by Bob Felts)
1427 * bug fix: LOG with base zero returned values of inconsistent type.
1429 changes in sbcl-1.0.20 relative to 1.0.19:
1430 * minor incompatible change: OPTIMIZE qualities
1431 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1432 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1433 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1434 * documentation: some slot access efficiency guidelines have been
1435 added to the user manual.
1436 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1437 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1438 as ASSOC and MEMEBER.
1439 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1440 to more efficient EQ-comparison versions more often.
1441 * optimization: enhanced derivation of DOLIST iteration variable type
1443 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1445 * optimization: runtime lookup of function definitions can be
1446 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1447 * optimization: compiler is able to derive the return type of
1448 (AREF (THE STRING X) Y) as being CHARACTER.
1449 * optimization: CLRHASH on empty hash-tables no longer does pointless
1450 work. (thanks to Alec Berryman)
1451 * optimization: REPLACE deftransforms don't punt when :START1 or
1453 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1454 no longer emits a code deletion note. (reported by Andrew
1456 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1457 functions with an odd number of &OPTIONAL arguments, a &REST
1458 argument, and one or more &KEY arguments at the call site.
1459 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1460 arguments appeared at call sites as well.
1461 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1462 READ-LINE &co can no longer read from them afterwards. (reported
1464 * bug fix: fixed #427: unused local aliens no longer cause compiler
1465 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1467 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1468 alien-stack leakage. (reported by Andy Hefner)
1469 * bug fix: PROGV signals an error when an attempt to violate declared
1470 type of a variable or bind a constant is made.
1471 * bug fix: SET signals an error when an attempt to violate declared
1472 type of a variable is made.
1473 * bug fix: restart computation during the execution of a restart
1474 test function no longer causes infinite recursion. (reported by
1476 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1477 signals an error. (thanks to Pierre Mai)
1478 * bug fix: EXPORT left symbol unexported in conflict situations.
1479 (thanks to Michael Weber)
1480 * bug fix: correctly handle name conflicts involving CL:NIL.
1481 (thanks to Michael Weber)
1482 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1483 conflicts arising from USEing package with conflicting symbols
1484 correctly. (thanks to Michael Weber)
1486 changes in sbcl-1.0.19 relative to 1.0.18:
1487 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1488 warnings that go otherwise unhandled will be muffled if they are
1489 of the type that's the value of this variable.
1490 * optimization: stack allocation is slightly more efficient on x86
1492 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1493 where a raw slot always is initialized using the initform whose
1494 type is not know sufficiently well a compile-time are now compiled
1495 correctly. (reported by John Morrison)
1496 * bug fix: compiler no longer makes erronous assumptions in the
1497 presence of non-foldable SATISFIES types.
1498 * bug fix: stack analysis missed cleanups of dynamic-extent
1499 arguments in non-let-converted calls to local functions.
1500 * improvements to the Windows port:
1501 ** adjusted address spaces for building on both Win32 and
1502 Win64. (thanks for John Connors)
1503 * fixed some bugs revealed by Paul Dietz' test suite:
1504 ** interval arithmetic during type derivation used inexact integer
1505 to single-float coercions.
1506 ** arithmetic operations involving large integers and single
1507 floats give the same results in compiled and interpreted code.
1508 ** deriving the result type of COERCE no longer signals an error
1509 if the derived type of the second argument is a MEMBER type
1510 containing invalid type specifiers.
1511 ** ADJOIN with constant NIL as second argument works correctly.
1512 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1514 changes in sbcl-1.0.18 relative to 1.0.17:
1515 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1516 profiles only the current thread.
1517 * minor incompatible change: changes to SYMBOL-VALUE of constants
1518 defined with DEFCONSTANT now signal an error.
1519 * enhancement: SB-SPROF now has support for wallclock profiling,
1520 and is also able to profile specific threads. REPORT output
1521 has also additional sorting options.
1522 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1524 * optimization: structure allocation has been improved
1525 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1526 ** out of line constructors are ~10% faster.
1527 ** inline constructors are ~15% faster.
1528 ** inline constructors are capable of dynamic extent allocation
1529 (generally on x86 and x86-64, in some cases on other platforms
1531 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1533 * optimization: file compiler is now able to coalesce non-circular
1534 lists, non-base strings, and bit-vectors. Additionally, constants
1535 are never referenced through SYMBOL-VALUE at runtime.
1536 * optimization: code defining methods on PRINT-OBJECT (and other
1537 generic functions in the COMMON-LISP package) now loads faster.
1538 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1540 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1541 fasl is now deleted. (reported by Attila Lendvai)
1542 * bug fix: READ-LINE always returned NIL for the last line in files.
1543 (reported by Yoshinori Tahara)
1544 * bug fix: more accurate disassembly annotations of foreign function
1545 calls. (thanks to Andy Hefner)
1546 * bug fix: trimming non-simple strings and non-string string
1547 designators when the there is nothing to trim works properly.
1548 (thanks to James Knight)
1549 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1550 (thanks to Travis Cross)
1551 * fixed some bugs revealed by Paul Dietz' test suite:
1552 ** NIL is a valid function name (regression at 1.0.13.38)
1553 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1554 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1555 fill pointers properly (regression at 1.0.12.23)
1556 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1557 displacement indices properly (regression at 1.0.12.23)
1559 changes in sbcl-1.0.17 relative to 1.0.16:
1560 * temporary regression: user code can no longer allocate closure
1561 variable storage on stack, due to bug 419 without explicitly
1562 requesting it. Please consult sbcl-devel for advice if you need to
1563 use this feature in the meanwhile.
1564 * new feature: runtime argument --control-stack-size can be used to
1565 adjust thread default control stack size.
1566 * enhancement: improved TIME output
1567 ** all times are reported using the measured accuracy (milliseconds
1568 for real and GC times, microseconds for everything else.)
1569 ** processor cycle counts on x86 and x86-64.
1570 ** interpreted forms are counted for both evaluator modes.
1571 ** number of lambdas converted by the compiler is reported.
1572 ** CPU percentage report (computed from real and total run time.)
1573 ** more comprehensive run time reporting, using a condenced format
1574 ** interperted form, lambda, and page fault counts are omitted
1576 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1578 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1579 * optimization: two argument forms of LAST are upto ~10% faster
1580 in normal SPEED policies.
1581 * optimization: NCONC no longer needs to heap cons its &REST list
1582 in normal SPEED policies.
1583 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1584 to Sidney Markowitz)
1585 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1586 regression since 1.0.9.1. (thanks to Eric Marsden)
1587 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1588 since 1.0.15.36. (thanks to Paul Khuong)
1589 * bug fix: LAST when always returned the whole list when given a bignum
1590 as the second argument.
1591 * bug fix: dynamic extent allocation of nested lists and vectors
1592 could leak to otherwise accessible parts.
1593 * bug fix: invalid optimization of heap-allocated alien variable
1595 * bug fix: fasl header checking is less vulnerable to different
1596 platform word lengths.
1597 * bug fix: more correct assembler syntax for GNU binutils
1598 2.18.50.0.4 support. (thanks to Marijn Schouten)
1599 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1601 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1602 declarations) successfully. (reported by Attila Lendvai)
1604 changes in sbcl-1.0.16 relative to 1.0.15:
1605 * minor incompatible change: revert the changes to sb-posix's error
1606 signaling added in 1.0.14.
1607 * minor incompatible change: change PROBE-FILE back to returning
1608 NIL whenever we can't get a truename, as was the case before 1.0.14.
1609 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1610 inherits from ERROR instead of just CONDITION.
1611 * new feature: SB-INTROSPECT can provide source locations for instances
1612 as well. (thanks to Tobias Rittweiler)
1613 * optimization: binding special variables now generates smaller code
1614 on threaded platforms.
1615 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1616 and cases where no :TEST is given but the compiler can infer that
1617 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1618 * optimization: better LOGNOT on fixnums.
1619 * optimization: modular arithmetic for a particular requested width
1620 is implemented using a tagged representation unless a better
1621 representation is available.
1622 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1623 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1624 for wellformedness and returns a specialized vector. (reported by
1625 Francois-Rene Rideau)
1626 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1627 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1628 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1629 unscheduling timer at the same time as another timer fires.
1630 * bug fix: don't reschedule timers for dead threads.
1631 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1632 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1633 bogus errors if select() was interrupted.
1634 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1636 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1637 * enhancement: cleaner backtraces for interactive interrupts, as
1638 well as other cases where the interesting frames used to be
1639 obscured by interrupt handling frames.
1640 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1641 now supported, and tracing a whole package using (TRACE "FOO") now
1642 traces SETF-functions as well.
1643 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1644 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1645 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1646 * unreadably printed representation of hash-tables now includes
1648 * bug fix: partially fixed #188: type propagation from assignments
1649 is now more efficient.
1650 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1651 'DOUBLE-FLOAT) are not flushable.
1652 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1653 full address of the object, and none of the tag bits.
1654 * bug fix: readably printing hash-tables now respects other printer
1655 control variables. (reported by Cedric St-Jean)
1656 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1657 keyword with MAKE-HASH-TABLE.
1658 * bug fix: export SB-POSIX:MKSTEMP.
1659 * bug fix: SORT was not interrupt safe.
1660 * bug fix: XREF accounts for the last node of each basic-block as
1662 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1663 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1664 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1665 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1666 create obsolete instances in the case of redefinition or
1667 obsoletion of a superclass. (thanks to Andy Hefner)
1668 * bug fix: Support for the Alpha architecture has been revived; it had
1669 suffered somewhat from lack of maintenance since sbcl-1.0.
1670 * improvements to the Windows port:
1671 ** The system detects the codepage to use at startup, instead of
1672 using the value from the saved core. (thanks to Kei Suzuki)
1674 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1675 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1676 (see documentation for details.)
1677 * revived support for OpenBSD (contributed by Josh Elsasser)
1678 * partially fixed bug #108: ROOM no longer suffers from occasional
1679 (AVER (SAP= CURRENT END)) failures.
1680 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1681 bodies no longer cause a WARNING to be signalled. (reported by
1683 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1684 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1685 the bug in TRUNCATE.) (reported by Michael Weber)
1686 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1687 no samples. (reported by Andy Hefner)
1688 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1689 no longer appear as (NIL ...) frames in backtraces.
1690 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1691 is now actually exported from SB-EXT as documented. (reported by
1693 * bug fix: sb-aclrepl now correctly understands how to inspect
1694 single-floats on 64-bit platforms where single-floats are not boxed.
1695 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1696 yet been finalized. (reported by Levente Meszaros)
1697 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1698 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1699 SBCL-specific optimize qualities.
1701 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1702 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1703 an executable in the search path, and does so in the child
1704 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1705 been removed; it can be found in the CVS history, for somebody who
1706 needs that search behavior (see the manual).
1707 * minor incompatible change: compiler policy re. weakening type
1708 checks has changed: now type checks are weakened only if SAFETY < 2
1710 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1711 unparsing of directory pathnames as files. Analogously,
1712 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1713 filename to parse into a directory pathname.
1714 * enhancement: implicit generic function creation now signals a
1715 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1716 users can bind handlers for and muffle around calls to LOAD.
1717 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1718 to be used (using the default stream external format), and allows
1719 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1720 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1721 strings and vectors whose element-type or simplicity is not fully
1722 known at compile-time.
1723 * optimization: STRING-TRIM and related functions no longer allocate
1724 a new string when no trimming needs to be performed. These functions
1725 are also faster than before when the input string has been declared
1727 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1728 * optimization: READ-LINE is significantly faster for files containing
1730 * optimization: non-open coded uses of character comparison operators
1731 (e.g. char=) no longer cons when called with more than one parameter
1732 on platforms supporting dynamic-extent allocation.
1733 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1734 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1735 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1737 * bug fix: some sequence functions elided bounds checking when
1739 * bug fix: too liberal weakening of union-type checks when SPEED >
1741 * bug fix: more bogus fixnum declarations in ROOM implementation
1744 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1745 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1746 :SYNCHRONIZED argument, which makes the hash-table safe for
1747 concurrent accesses (but not iteration.) See also:
1748 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1749 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1750 * optimization: CONCATENATE on strings is an order of magnitude faster
1751 in code compiled with (> SPEED SPACE).
1752 * optimization: SUBSEQ is ~50% faster on lists.
1753 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1754 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1755 END is smaller then START.
1756 * bug fix: SB-PROFILE will no longer report extra consing for nested
1757 calls to profiled functions.
1758 * bug fix: ROOM implementation had bogus fixnum declarations which
1759 could cause type-errors when calling ROOM on large images.
1760 * bug fix: if file compilation is aborted, the partial fasl is now
1761 deleted, and COMPILE-FILE returns NIL as the primary value.
1762 * bug fix: number of thread safety issues relating to SBCL's internal
1763 hash-table usage have been fixed.
1764 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1765 be returned from its body when the values were being returned
1766 using unknown-values return convection and the W-P-O was wrapped
1767 inside an UNWIND-PROTECT.
1768 * bug fix: sb-posix should now compile again under Windows, enabling
1769 slime to work again.
1771 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1772 * incompatible change: hash-table accessor functions are no longer
1773 automatically protected by locks. Concurrent accesses on the same hash-table
1774 from multiple threads can give inconsistent results or even corrupt the
1775 hash-table completely. Multi-threaded applications should do their own
1776 locking at the correct granularity. In the current implementation it is
1777 still safe to have multiple readers access the same table, but it's not
1778 guaranteed that this property will be maintained in future releases.
1779 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1780 and will signal an error at runtime.
1781 * enhancement: SB-THREAD package now exports a semaphore interface.
1782 * enhancement: CONS can now stack-allocate on x86 and
1783 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1785 * enhancement: nested lists can now be stack allocated on
1786 platforms providing stack allocation support.
1787 * enhancement: dynamic-extent support has been extended to support
1788 cases where there are multiple possible sources for the stack
1790 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1791 if the mutex is uncontested on Linux.
1792 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1793 as specified by the CLHS. (thanks to Tobias Rittweiler)
1794 * bug fix: NaN comparison now works on x86-64.
1795 * bug fix: CLOSE :ABORT T on a stream with pending output now
1797 * bug fix: instances of non-standard metaclasses using standard
1798 instance structure protocol sometimes missed the slot type checks
1800 * bug fix: known functions can be inlined in high-debug code.
1802 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1803 * minor incompatible change: the MSI installer on Windows no longer
1804 associates .lisp and .fasl files with the installed SBCL.
1805 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1806 on Windows. (thanks to Luis Oliviera)
1807 * new feature: SB-CLTL2 contrib module now implements
1808 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1809 * optimization: scavenging weak pointers is now more efficient,
1810 requiring O(1) instead of O(N) per weak pointer to identify
1811 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1812 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1813 method bodies using constant slot-names when the first argument is
1814 a specializer parameter for the method.
1815 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1816 names, when the class of the instance is a direct instance
1817 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1818 as slow as the constant slot-name case.)
1819 * optimization: member type construction is now O(N) instead
1821 * optimization: UNION and NUNION are now O(N+M) for large
1822 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1824 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1825 now more readable in environments like Slime which display it.
1826 (thanks to Tobias C. Rittweiler)
1827 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1828 was able to infer the correct argument type for the object on which
1829 the CAS operation was being performed.
1830 * bug fix: copy propagation interfered with parallel assignment
1831 semantics in local calls. (reported by Paul Khuong)
1832 * bug fix: the signed modular fixnum shift compiled to wrong code on
1833 x86 and x86-64. (spotted by a slight modification to some of
1836 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1837 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1838 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1839 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1841 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1842 and generic function now print the object identity for anonymous
1843 instances. (thanks to Attila Lendvai)
1844 * enhancement: as an extension to MOP, SBCL now supports SETF of
1845 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1846 (thanks to Attila Lendvai)
1847 * enhancement: sb-cover has an alternate annotation mode which puts
1848 the form annotations at the car of the form, instead of annotating
1849 it completely. The benefit of this mode is that it shows better
1850 which forms were instrumented by the compiler.
1851 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1852 by printer control variables. (reported by Dan Corkill)
1853 * bug fix: system leaked memory when delayed output was performed by
1854 the OS in smaller chunks then expected. (thanks to David Smith)
1855 * bug fix: system leaked memory when file streams were not closed
1857 * bug fix: large objects written to slow streams that were modified
1858 after the write could end up with the modified state written to
1859 the underlying file descriptor.
1860 * bug fix: multiple threads operating in parallel on the same stream
1861 could cause buffer-overflows.
1862 * bug fix: source location information is stored correctly
1863 (broken since 1.0.6). This bug would generally show up as the
1864 Slime debugger highlighting the wrong form when the sldb-show-source
1866 * bug fix: Branch forms are again annotated as branches in the sb-cover
1868 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1869 on x86-64. (reported by Gregory Vanuxem)
1870 * bug fix: EQUALP could return wrong results for structures with raw
1871 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1872 word). (reported by Vjacheslav Fyodorov)
1873 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1876 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1877 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1878 atomic compare-and-swap operations on threaded platforms.
1879 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1880 allows assigning a global minimum value to optimization qualities
1881 (overriding proclamations and declarations).
1882 * enhancement: closed over variables can be stack-allocated on x86
1884 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1886 * optimization: slot definition lookup is now O(1). This speeds up
1887 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1888 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1889 * optimization: ASSOC and MEMBER can now be open-coded for all
1890 combinations of keyword arguments when second argument is constant
1891 and SPEED >= SPACE. In other cases a specialized version is
1893 * bug fix: using obsoleted structure instances with TYPEP and
1894 generic functions now signals a sensible error.
1895 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1896 (reported by Kristoffer Kvello)
1897 * bug fix: backtrace construction is now more careful when making
1898 lisp-objects from pointers on the stack, to avoid creating bogus
1899 objects that can be seen by the GC.
1900 * bug fix: defaulting of values in contexts expecting more than 7
1901 variables now works on x86-64. (reported by Christopher Laux)
1902 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1904 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1905 as the property-list of a symbol.
1906 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1907 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1908 situations requested, are once again file-compileable. (reported
1911 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1912 * MOP improvement: support for user-defined subclasses of
1913 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1914 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1915 the expansion of DEFMETHOD, is responsible for generating a form
1916 which creates a list of specializers when evaluated. Additional
1917 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1918 debugging and introspective support.
1919 * minor incompatible change: the (unsupported) spinlock interface
1920 has changed: free spinlock now has the value NIL, and a held spinlock
1921 has the owning thread as its value.
1922 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1923 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1925 * enhancement: name of a socket-stream is now "a socket" instead of
1926 "a constant string".
1927 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1928 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1929 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1930 for generic functions. (Thanks to Tobias C. Rittweiler)
1931 * optimization: bignum printing speed has been improved by 20-40%
1932 (depending on the bignum size.)
1933 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1935 * bug fix: the cache used by the CLOS to store precomputed effective
1936 methods, slot offsets, and constant return values is now thread and
1938 * bug fix: generic function dispatch function updating is now thread
1939 and interrupt safe (in the sense that the known issues have been
1941 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1942 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1943 * bug fix: asdf systems with dependencies to the SB-POSIX or
1944 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1945 * bug fix: interrupt safety of applicable method computation has been
1948 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1949 * new contrib: sb-cover, an experimental code coverage tool, is included
1950 as a contrib module.
1951 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1952 significantly faster.
1953 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1954 produce more efficient code on x86-64 if the compiler can determine
1955 that (+ INDEX <constant>) does not require a bounds check and FOO
1956 has an element type at least 8 bits wide.
1957 * enhancement: a new, experimental synchronous timeout facility is
1958 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1959 * enhancement: when a symbol name conflict error arises, the
1960 conflicting symbols are always printed with a package prefix.
1961 (thanks to Kevin Reid)
1962 * enhancement: stepping is now once again supported on the SPARC and
1963 MIPS platforms. (It is also now more likely to work on CheneyGC
1965 * enhancement: sb-sprof can now also track and report accurate call
1967 * bug fixes: the treatment of non-standard subclasses of
1968 SB-MOP:SPECIALIZER is more correct.
1969 * incompatible change: PURIFY no longer copies the data from the
1970 dynamic space into the static and read-only spaces on platforms
1971 that use the generational garbage collector
1972 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1974 * bug fix: GC race condition occasionally resulting in crashes with
1975 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1977 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1979 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1980 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1981 * bug fix: an asynchronous interrupt could previously leave the
1982 system running with GC inhibited.
1983 * bug fix: a DECLARE form evaluated at top-level now causes an error
1984 rather than silently (or verbosely) returning NIL.
1985 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1986 result in a error being signalled due to source form lookup errors.
1987 (reported by Peter Graves)
1989 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1990 * incompatible change: removed writer methods for host-ent-name,
1991 host-ent-addresses -- changing the values did not update the DNS
1993 * minor incompatible change: changed experimental JOIN-THREAD interface
1994 * documentation: the manual now lists reader and writer methods
1995 in class slot documentation sections. (thanks to Richard M Kreuter)
1996 * documentation: unwinding from asyncronous events has been
1997 documented as unsafe.
1998 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1999 in multithreaded application code.
2000 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2001 platforms. (thanks to James Anderson for the optimization hint)
2002 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2004 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2005 variants no longer cons.
2006 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2007 their NOT- variants no longer cons.
2008 * optimization: EQUAL hash tables no longer use SXHASH for objects
2009 of all data types, but instead use an EQL hash for types for which
2010 EQUAL is the same as EQL.
2011 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2012 are significantly faster.
2013 * optimization: new STRING-OUTPUT-STREAM implementation is much
2014 faster for large outputs and conses 30% less on average.
2015 * enhancement: XREF information is now collected for references made
2016 to global variables using SYMBOL-VALUE and a constant argument.
2017 * enhancement: SIGINT now causes a specific condition
2018 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2019 * bug fix: FILE-POSITION used to signal an error in some cases where
2020 ANSI requires it to return NIL.
2021 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2022 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2023 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2025 * bug fix: bad type declaration in the CLOS implementation has
2026 been fixed. (reported by James Anderson)
2027 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2028 (thanks to Lutz Euler)
2029 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2030 required by the CLHS. (reported by Samium Gromoff)
2031 * bug fix: dead unbound variable references now signal an error.
2032 (reported by Marco Monteiro)
2033 * bug fix: / with an unused value was being deleted in safe code.
2034 (thanks to Marco Monteiro and Kevin Reid)
2035 * bug fix: number of characters that can be written onto a single
2036 line in a file is unlimited.
2037 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2038 been fixed by inhibiting interrupts for when GC is disabled.
2039 * bug fix: some interrupt safety issues with GETHASH, (SETF
2040 GETHASH), CLRHASH and REMHASH have been fixed.
2041 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2042 specifier no longer causes infinite recursion.
2043 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2044 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2045 * bug fix: an &environment argument with the correct variable information
2046 is passed to macros that are expanded during byte compilation.
2047 (reported by Samium Gromoff)
2048 * bug fix: a logic error was causing the hash function for bignums to
2049 have excessive amounts of collisions. (reported by Faré Rideau)
2050 * bug fix: modifying the contents of an array could change the return
2051 value of SXHASH on that array, which is only allowed for strings
2052 and bit vectors. (bug introduced in 0.9.16)
2053 * improvement: the x86-64/darwin port now passes all tests (except
2054 for the debugger tests) but should still be considered
2055 experimental until this is fixed.
2056 * improvement: a style-warning is signaled for CASE (etc) clauses with
2057 duplicate keys. (thanks to Kevin Reid)
2058 * improvement: macos/x86 and macos/x86-64 now use mach exception
2059 handlers for dealing with illegal instructions (for trapping and
2060 error handling) and memory protection violations (for GC).
2062 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2063 * new platform: experimental support for x86-64/darwin (MacOS).
2064 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2065 and getnameinfo sockets functions are used instead of gethostbyaddr
2066 and gethostbyname, on platforms where the newer functions are available.
2067 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2069 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2070 don't print the startup banner, but behave as if --noinform was passed
2071 as a command line argument. (thanks to Kevin Reid)
2072 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2073 * optimization: code using alien values with undeclared types is much faster.
2074 * optimization: the compiler is now able to open code SEARCH in more cases.
2075 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2076 * bug fix: using standardized COMMON-LISP special variables as loop
2077 variables no longer signals bogus package lock violations. (reported
2079 * bug fix: declaring local loop variables to be of a range-limited type
2080 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2081 (reported by Andras Simon)
2082 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2083 bugs remain on x86-64.)
2084 * bug fix: the #= and ## reader macros now interact reasonably with
2085 funcallable instances.
2086 * bug fix: type-checks for function arguments were compiled using the
2087 compiler policy settings of the wrong lexical environment (in 1.0.2
2089 * bug fix: SHADOW accepts characters as string designators, as required
2090 by the spec (thanks to Eric Marsden)
2091 * bug fix: fixed GC safety issues when foreign functions are called with
2092 non-base strings as arguments
2093 * bug fix: more consistent error output for fatal-compiler-warnings, like
2095 * bug fix: functions with proper names were showing up as NIL in
2096 backtraces (reported by Edi Weitz, regression in 1.0.2)
2098 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2099 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2100 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2101 produce more efficient code on the x86 if the compiler can determine
2102 that (+ INDEX <constant>) does not require a bounds check and FOO
2103 has an element type at least 8 bits wide.
2104 * bug fix: references to undefined variables are handled the same way
2105 in toplevel forms as in the normal compiler
2106 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2108 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2109 (thanks to Jon Buller)
2110 * improvement: faster compilation times for complex functions
2111 * improvement: added readlink support to SB-POSIX (thanks to Richard
2114 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2115 * improvement: experimental support for mach exception handling on
2116 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2118 * improvement: support for GBK external format.
2119 (thanks to Chun Tian (binghe))
2120 * improvement: the debugger now displays variables that have been closed
2121 over, in code compiled with (DEBUG 2) or higher
2122 * improvement: support for executable cores on NetBSD (thanks to
2124 * new feature: added a RESTART-FRAME debugger command
2125 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2126 be used to provide an implementation for FILE-POSITION on Gray streams
2127 (thanks to Eric Marsden)
2128 * new feature: add syslog, openlog and closelog support to SB-POSIX
2129 (thanks to Richard Kreuter)
2130 * optimization: the function call overhead in code compiled with
2131 a high DEBUG optimization setting is significantly
2132 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2133 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2134 (thanks to Tony Martinez)
2135 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2136 evaluated once (reported by Kevin Reid)
2137 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2138 works again (thanks to Kilian Sprotte)
2139 * bug fix: an error is signaled for tagbodies with duplicate tags
2140 (thanks to Stephen Wilson)
2141 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2142 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2143 stack frames from alien callbacks.
2144 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2145 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2146 65k pages (thanks to David Woodhouse)
2147 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2149 changes in sbcl-1.0.1 relative to sbcl-1.0:
2150 * new platform: FreeBSD/x86-64, including support for threading.
2151 * new feature: the compiler stores cross-referencing information
2152 about function calls (who-calls), macroexpansion (who-macroexpands)
2153 and special variables (who-binds, who-sets, who-references) for code
2154 compiled with (< SPACE 3). This information is available through the
2155 sb-introspect contrib.
2156 * new feature: users may subclass SEQUENCE, and have instances of
2157 these classes interoperate with standard Common Lisp functions if
2158 a number of methods are defined. (This feature is experimental
2159 and the interface subject to change based on feedback from SBCL
2160 users and the general community)
2161 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2162 x86/x86-64, rather than the previous fixed depth of 8
2163 * improvement: another pthread back-end of mutex "pthread-futex".
2164 * bug fix: non-ascii command-line arguments are processed correctly
2165 (thanks to Yaroslav Kavenchuk)
2166 * bug fix: non-required arguments were not passed correctly when a method
2167 defined using DEFMETHOD was called from a mop-generated method using
2168 CALL-NEXT-METHOD (reported by Pascal Costanza)
2169 * bug fix: recursion is now permitted in accessors through
2170 SLOT-UNBOUND. (reported by Pascal Costanza)
2171 * bug fix: an error was signaled at startup if the HOME environment
2172 variable was defined, but had an empty value (reported by Peter Van Eynde)
2173 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2174 signal a PROGRAM-ERROR, not a BUG.
2175 * bug fix: SB-POSIX:READDIR works when built with large file support.
2176 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2178 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2179 for better automatic indentation support. (thanks to Matt Pillsbury)
2180 * optimization: loading generic functions no longer takes O(n^2) time,
2181 proportional to the amount of methods in the generic function
2182 (reported by Todd Sabin and Jeremy Brown)
2183 * optimization: the FIND and POSITION family of sequence functions
2184 are significantly faster on arrays whose element types have been
2186 * improvements to the Windows port:
2187 ** Intermittent heap corruption problems have been fixed. (thanks
2188 to Alastair Bridgewater)
2189 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2191 ** Lisp is able to unwind foreign exception frames from alien
2192 callbacks. (thanks to Alastair Bridgewater)
2194 changes in sbcl-1.0 relative to sbcl-0.9.18:
2195 * improvement: experimental support for threading on FreeBSD/x86.
2196 (thanks to NIIMI Satoshi)
2197 * improvement: runtime option --dynamic-space-size can be used
2198 to set the size of the dynamic space reserved on startup.
2199 * improvement: floating point modes in effect are now saved in
2200 core, and restored on startup.
2201 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2202 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2203 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2204 threads are not running after *SAVE-HOOKS* have run.
2205 * improvement: writes to CLOS instance slots are type-checked in code
2206 compiled with (SAFETY 3)
2207 * improvement: floating-point exception handling on FreeBSD (thanks to
2209 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2210 (thanks to Zach Beane)
2211 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2213 * improvement: added support for the Shift-JIS external format.
2214 (contributed by NIIMI Satoshi)
2215 * improvement: callbacks are supported on Linux/PPC. (thanks to
2217 * bug fix: compiler bug triggered by a (non-standard) VALUES
2218 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2219 * bug fix: file compiler no longer confuses validated and already
2220 dumped structurres. (reported by Kaersten Poeck)
2221 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2222 fill-pointer signals a type-error as required. (thanks to
2224 * bug fix: disassemly of funcallable instances works.
2225 * bug fix: single stepping on PPC.
2226 * bug fix: fix thread-safety problems in the type system (generally
2227 manifesting as nonsensical errors like "STRING is a bad type specifier
2228 for sequences" or "The value 1 is not of type FIXNUM")
2229 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2230 (reported by Josip Gracin)
2231 * bug fix: an error is signaled for attempts to displace arrays with
2232 incompatible element types (thanks to Mario Mommer)
2233 * bug fix: more correct handling of wide characters in debug info
2234 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2235 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2236 and don't cause extra consing
2237 * optimization: MAP and MAP-INTO are significantly faster on vectors
2238 whose elements types have been declared.
2239 * Improvements to SB-SPROF:
2240 ** Support for allocation profiling
2241 ** Reduced profiling overhead, especially for long profiling runs
2242 * Improvements to the Windows port:
2243 ** floating point exceptions are now reported correctly.
2244 ** stack exhaustion detection works partially.
2245 ** more accurate GET-INTERNAL-REAL-TIME.
2246 ** better RUN-PROGRAM behaviour in case of errors in the child
2248 ** PROBE-FILE now simplifies pathnames correctly.
2249 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2250 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2251 1st 1970 (although time timezone data will be unreliable).
2252 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2254 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2255 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2256 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2258 * bug fix: two potential GC deadlocks affecting threaded builds.
2259 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2260 returns T (reported by Anton Kazennikov)
2261 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2262 with non-variable places
2263 * bug fix: remove a race condition in the setting of
2264 funcallable-instance functions, this should make threaded CLOS
2265 code more stable against memory faults.
2266 * bug fix: corruption of specials when unbinding is interrupted by an
2267 asynchronous unwind (reported by Hannu Koivisto)
2268 * improvement: the debugger will now also display local variables that
2269 are only used once, for code compiled with a DEBUG optimization quality
2272 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2273 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2274 * incompatible change: External-format support for FFI calls. The
2275 SB-ALIEN:C-STRING no longer implies an ASCII
2276 external-format. Instead the string is subject to external-format
2277 conversion. Additionally return values of type SB-ALIEN:C-STRING
2278 are by default of type (SIMPLE-ARRAY CHARACTER), not
2279 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2280 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2281 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2282 * incompatible change: SB-EXT package no longer contains the
2283 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2284 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2286 * incompatible change: the single-stepper is no longer available
2287 on Alpha, Mips and Sparc platforms.
2288 * minor incompatible change: the direct superclasses of
2289 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2290 not (STANDARD-OBJECT FUNCTION). This makes the
2291 class-precedence-lists of GENERIC-FUNCTION and
2292 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2294 * minor incompatible change: the default stream external format on
2295 non-unicode SBCL is no longer detected from the locale, but is always
2297 * new feature: Add a version of evaluator that uses an interpreter instead
2298 of the compiler. EVAL still uses the compiler by default, to switch it
2299 to use the interpreter, set the value of the variable
2300 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2301 * minor incompatible change: the single-stepper REPL has been merged
2302 with the normal debugger (see the "Stepping" heading of the debugger help
2303 for more details). The debugger command STEP will no longer switch
2304 to the single-stepper REPL.
2305 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2306 for a type now works.
2307 * bug fix: loading of default sysinit file works. (thanks to Leonid
2309 * bug fix: better detection of circularities in the file-compiler.
2310 (reported by Marco Monteiro)
2311 * bug fix: the CL pathname functions now work with files that have
2312 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2313 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2314 systems with Unix98 pty semantics.
2315 * bug fix: ASDF-INSTALL will now work with bsd tar.
2316 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2318 * bug fix: timers expiring in dead threads no longer cause a
2319 type-error (reported by Paul "Nonny Mouse").
2320 * bug fix: thanks to more lightweight single-stepper instrumentation,
2321 code compiled with (DEBUG 3) will compile and execute significantly faster,
2322 and will have more accurate type-inferencing than before
2323 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2324 whose bindings are modified
2325 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2326 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2327 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2328 CL:SOFTWARE-VERSION with proper version
2330 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2331 * feature: implemented the READER-METHOD-CLASS and
2332 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2333 as specified by AMOP.
2334 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2336 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2337 (thanks to Lutz Euler)
2338 * optimization: hashing of general arrays and vectors has been
2339 improved. (reported by Any Fingerhut)
2340 * enhancement: SB-INTROSPECT is now able to find definitions of
2341 profiled functions. (thanks to Troels Henriksen)
2342 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2343 as well, allowing compiler-macros for SETF-functions to expand.
2344 * enhancement: step-instrumentation no longer wraps known
2345 single-value functions with multiple-value context, allowing
2346 better type inference.
2347 * fixed bug #337: use of MAKE-METHOD in method combination now works
2348 even in the presence of user-defined method classes. (reported by
2349 Bruno Haible and Pascal Costanza)
2350 * fixed bug #339(c): if there are applicable methods not part of any
2351 long-form method-combination group, call INVALID-METHOD-ERROR.
2352 (reported by Bruno Haible)
2353 * fixed bug #361: the :FUNCTION initarg in the protocol for
2354 initialization of methods can now be used to override
2355 internally-produced optimized functions. (reported by Bruno
2357 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2358 system-provided lambda expression no longer cause warnings about
2359 unbound #:|pv-table| symbols.
2360 * bug fix: improved the handling of type declarations and the
2361 detection of violations for keyword arguments with non-constant
2363 * bug fix: potentially erronous calls to PATHNAME and
2364 MERGE-PATHNAMES were being flushed in some cases.
2365 (reported by Richard Kreuter)
2366 * bug fix: compiled calls to TYPEP were mishandling obsolete
2367 instances. (reported by James Bielman and Attila Lendvai)
2368 * bug fix: format strings with ~> without matching ~< no longer
2369 trigger an AVER, but signal an understandable error instead.
2370 (reported by Antonio Martinez)
2371 * bug fix: specifying an output-file without a pathname-type for
2372 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2373 of input-file instead of "fasl". (reported by Robert Dodier)
2374 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2375 (reported by James Y Knight).
2376 * bug fix: compiler-macros-function did not consider the environment
2377 argument for shadowing by local functions.
2378 * bug fix: compiler-macros expansion was inhibited by local INLINE
2380 * bug fix: inline expansions of known functions were subject to
2381 step-instrumentation in high debug policies, leading to problems
2382 with type-inference.
2383 * bug fix: compiler failed to differentiate between different CONS
2384 types in some cases.
2385 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2386 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2387 * bug fix: #368: incorrect use of expressed vs. upgraded array
2389 * bug fix: #306a: more precise unions of array types.
2390 * thread-safety improvements:
2391 ** CONDITION-WAIT could return early on Linux, if the thread was
2392 interrupted and subsequently continued with SIGCONT.
2393 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2395 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2396 * added support for the ucs-2 external format. (contributed by Ivan
2398 * minor incompatible change: pretty printing of objects of type
2399 (cons symbol) is, in the default pprint-dispatch-table, now
2400 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2402 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2403 called later in a class's lifetime, possibly as late as when the
2404 first instance of the class is created. Previously,
2405 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2406 class became finalizeable.
2407 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2408 for multibyte external-format streams. (thanks to "vbzoli")
2409 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2410 with :ALLOCATION :CLASS inherited from superclasses of the
2412 * fixed bug: anonymous classes can now be created using the :NAME
2413 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2414 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2415 * fixed bug: core-files saved with :EXECUTABLE T can again be
2416 executed when SBCL_HOME isn't set. (reported by James Knight)
2417 * fixed bug: toplevel LOCALLY forms with declarations could
2418 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2419 * fixed bug: printing from several different threads using different
2420 values of *print-case* could cause invalid output, due to
2421 some internal special variables of the printer not being bound
2422 thread-locally (reported by Max Mikhanosha)
2423 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2424 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2425 (reported by Pascal Costanza)
2426 * fixed bug: FINALIZE-INHERITANCE is called from
2427 REINITIALIZE-INSTANCE on classes when the class has previously
2428 been finalized, as required by AMOP.
2429 * minor code generation optimizations:
2430 ** better register allocation in CLOS dispatching functions
2431 ** overflow detection when coercing signed bytes to fixnums on x86-64
2432 ** is now implemented with one IMUL instruction instead of three shifts
2433 ** more efficient bit-vector access on x86 and x86-64
2434 ** more efficient access to raw structure slots on x86 and x86-64
2435 * fixed some bugs revealed by Paul Dietz' test suite:
2436 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2437 return its argument.
2439 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2440 * feature: thread support on Solaris/x86, and experimental thread support
2442 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2444 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2445 default method for SLOT-UNBOUND.
2446 * minor incompatible change: prevent the user from specializing the
2447 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2448 somewhat counter to the intent of the protocol, I (CSR) think, and
2449 additionally it just doesn't work in SBCL as currently
2450 implemented, thanks to optimizations (that are always valid for
2451 the other three SLOT-VALUEish functions, but not for the setter).
2452 * minor incompatible change: the :SB-LDB feature is now enabled by
2453 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2454 the low-level debugger.
2455 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2456 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2457 down to an SB-SYS:FD-STREAM, allowing direct communication in
2458 more cases. Temporary files and pipes are still used as a fallback
2460 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2461 on the non-reentrant C functions localtime(3) and gmtime(3).
2462 * bug fix: global optimization policy was not visible in LOCALLY and
2464 * bug fix: class objects can be used as specializers in methods.
2465 (reported by Pascal Costanza)
2466 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2467 with a type error. (reported by blitz_ on #lisp)
2468 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2469 failed with a type error. (reported by Pascal Bourguignon)
2470 * bug fix: merging pathnames against defaults with :DIRECTORY
2471 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2472 (reported by James Y Knight)
2473 * bug fix: saving large (>2GB) cores on x86-64 now works
2474 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2475 constant index and a (simple-array (signed-byte 32)) array
2476 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2477 error (patch by Robert J. Macomber)
2478 * feature: TIME now displays the amount of run-time spent in GC
2479 * bug fix: The debugger now does a better job of respecting
2480 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2481 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2482 workaround for bug 403.)
2483 * bug fix: floating point exception handling now works on FreeBSD
2484 (thanks to NIIMI Satoshi)
2485 * fixed some bugs revealed by Paul Dietz' test suite:
2486 ** MISC.641: LET-conversion were not supposed to work in late
2488 * improvements to the Win32/x86 port:
2489 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2490 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2492 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2493 * new feature: source path information is generated for macro-expansion
2494 errors for use in IDE's like Slime (thanks to Helmut Eller)
2495 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2496 * bug fix: compiler does not loop forever on an invalid type in
2498 * improvement: compilation of most CLOS applications is significantly
2500 * optimization: added a limited bytecode compiler for simple toplevel
2501 forms, speeding up compilation and FASL loading
2502 * bug fix: the statistical profiler now properly distinguishes anonymous
2505 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2506 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2507 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2508 into subclasses of the finalized class. Now user calls to
2509 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2510 system return before any subclasses are finalized.
2511 * minor incompatible change: The reader no longer ignores errors
2512 regarding non-existent packages in #+ and #- feature tests.
2513 * new feature: command line options --no-sysinit, --no-userinit to
2514 inhibit loading the corresponding init files
2515 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2516 for sending data through UDP sockets (thanks to François-René Rideau)
2517 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2518 error is signalled instead (thanks to François-René Rideau)
2519 * minor incompatible change: Error signalling behaviour of lexical
2520 operations violating package locks has changed slightly. Refer to
2521 documentation on package locks for details.
2522 * enhancement: EVAL can process IF-expressions without resorting to the
2524 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2525 constant-folded properly due to missing out-of-line functions.
2526 (reported by Mika Pihlajamäki)
2527 * bug fix: LISTEN sometimes returned T even in cases where no data was
2528 immediately available from the stream
2529 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2530 were reversed. (reported by Levente Mészáros)
2531 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2532 when given a vector displaced to an adjustable array. (reported
2534 * bug fix: derivation of float boundaries from numbers outside the
2535 appropriate float range (reported by John Wiseman)
2536 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2538 * bug fix: precomputing cache entries for generic functions with
2539 some subclasses of specializers as yet invalid does not attempt to
2540 fill a cache line with a negative offset. (reported by Levente
2542 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2543 allow condition class objects as arguments to DOCUMENTATION and
2544 (SETF DOCUMENTATION); only find and set documentation for
2545 structure names for the STRUCTURE doc-type. (suggested by Gary
2547 * improvements to the Win32/x86 port:
2548 ** (user-homedir-pathname) and default initialization file
2549 locations now know about the user's "Documents and Settings"
2550 directory (thanks to Yaroslav Kavenchuk)
2551 ** run-program is implemented (thanks to Mike Thomas)
2552 ** sockets support (thanks to Timothy Ritchey)
2553 ** better backtrace support (thanks to Alastair Bridgewater)
2554 ** sb-grovel supported
2555 ** asdf-install and sb-posix work somewhat
2556 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2557 * improvements to the Solaris/x86 port:
2558 ** works on Solaris 11/Solaris Express
2559 ** floating-point exception handling support
2560 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2561 * fixed some bugs revealed by Paul Dietz' test suite:
2562 ** REMOVE-METHOD returns its generic function argument even when
2563 the method is not one of the generic functions' methods.
2564 ** objects declared as MEMBER types can be admissible arguments to
2565 structure accessors.
2566 ** printing characters should simply be printed by the FORMAT ~:C
2568 ** compiler failure when compiling functions with hairy constant
2569 defaults for optional parameters.
2570 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2571 function, which is already optimized.
2573 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2574 * new platform: experimental support for SBCL x86/Darwin, including
2575 MacOS X 10.4.5 on Intel.
2576 * new feature: Unicode character names are now known to the system
2577 (through CHAR-NAME and NAME-CHAR).
2578 * new feature: the filesystem location of SBCL's core file is
2579 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2580 * minor incompatible change: the contrib modules SB-POSIX and
2581 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2582 this change is to make it easier to distribute
2583 location-independent binaries.
2584 * bug fix: as implied by AMOP, standardized classes no longer have
2585 slots named by external symbols of public packages. (reported by
2587 * optimization: calling functions via constant symbols -- as in
2588 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2589 via the function object as in (FUNCALL #'FOO).
2590 * optimization: on x86 and x86-64, the calling convention for the
2591 case of dealing with an unknown number of values has been altered
2592 to be friendlier to the prediction heuristics implemented,
2593 particularly with reference to CALL and RET pairing. (thanks to
2594 Alastair Bridgewater)
2595 * optimization: on x86, the code for access to thread-local symbol
2596 values and binding/unbinding of thread-local symbols is smaller.
2597 (thanks to Alastair Bridgewater)
2598 * enhancement: CONSTANTP is now able to determine constantness of
2599 more complex forms, including calls to constant-foldable standardized
2600 functions and some special forms beyond QUOTE.
2601 * fixed bug: occasional GC crashes on Solaris/x86
2602 * optimization: x86-64 supports stack allocation of results of simple
2603 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2604 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2605 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2606 (thanks to James Knight)
2607 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2608 by the standard (thanks to Stephen Compall)
2610 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2611 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2612 be used for bundling the runtime and the core file into one
2613 executable binary. This feature is not currently supported on all SBCL
2614 platforms. (thanks to James Bielman and NIIMI Satoshi)
2615 * new feature: a generational or ephemeral garbage collector is now
2616 the default on the PowerPC platform (both Linux and Darwin). The
2617 old Cheney (stop and copy) collector is a build-time option.
2618 (thanks to Cyrus Harmon, after Raymond Toy)
2619 * minor incompatible change: the method by which SBCL finds its
2620 contributed modules has changed; it no longer relies on symbolic
2621 links from an $SBCL_HOME/systems directory, but searches directly
2622 in the subdirectories of $SBCL_HOME.
2623 * enhancement: the dynamic heap size on the Linux/PPC platform is
2624 markedly larger, even using the older Cheney garbage collector.
2625 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2626 certain complicated string types. (reported by Gary King)
2627 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2628 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2629 * fixed bug: DOCUMENTATION on structures no longer signals an
2630 error if no structure type of the right name exists. (reported by
2632 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2633 applicable non-standard primary or :AROUND method on
2634 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2635 no longer cause unbound variable errors. (reported by Kevin Reid)
2636 * fixed bug: metacircle resolution in cases where methods have slots
2637 added before the slots from STANDARD-METHOD. (reported by Jean
2639 * fixed bug: the Power PC assembly code for calling into lisp
2640 sometimes computed its return address wrongly (depending on the
2641 15th bit of the address, fixed at link time). This used to
2642 manifest itself in a segmentation violation while building PCL.
2643 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2644 many others over the years)
2645 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2646 the stack pointer (treated as a signed integer) is negative.
2647 (thanks to Peter van Eynde)
2649 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2650 * new platform: experimental support for the Windows operating
2651 system has been added. (thanks to Alastair Bridgewater)
2652 * fixed several bugs in and robustified the PPC FFI (including
2653 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2654 * bug fix: allow non-simple string symbol names (reported by Paul
2656 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2658 * bug fix: saving a core corrupted callbacks on x86/x86-64
2659 * bug fix: closed a loophole in metacircularity detection and
2660 grounding in the PCL implementation of CLOS.
2661 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2662 (reported by tomppa on #lisp)
2663 * bug fix: clear the direction flag on Lisp -> C transitions, as
2664 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2665 (reported by Andrej Grozin and Hendrik Maryns)
2666 * optimization: major improvements to GC efficiency on GENCGC platforms
2667 * optimization: faster implementation of EQUAL
2668 * optimization: emit more efficient opcodes for some common
2669 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2670 * optimization: several other minor code-generation improvements on x86-64
2671 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2673 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2674 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2675 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2676 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2677 by ANSI as a generic function, and for consistency (SETF
2678 GENERIC-FUNCTION-NAME) is treated likewise.
2679 * fixed bug #233.b: make constraint propagation notice when a variable
2680 value is changed after it is referenced but before it is used
2681 * fixed bug #296: no more arbitrary behaviour from filenames with
2682 odd characters as --load arguments. (reported by Adam Warner)
2683 * fixed bug #390: :CHARACTER-SET pathname components now work as
2684 expected. (reported by Tim Daly Jr)
2685 * fixed bug #391: complicated :TYPE intersections in slot
2686 definitions no longer cause an error in PCL internals.
2687 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2688 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2689 returning the number of octets which would be written to the
2690 file-stream. (thanks to Robert J. Macomber)
2691 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2692 arguments to the internal stream functions. (thanks to David
2694 * bug fix: stack exhaustion is now handled on the x86/SunOS
2695 platform. (thanks to Daisuke Homma)
2696 * bug fix: more accurate ROOM results on GENCGC platforms
2697 * optimization: improved type inference for arithmetic-for
2698 index variables in LOOP
2699 * optimization: faster floating-point SQRT on x86-64
2700 * fixed some bugs revealed by Paul Dietz' test suite:
2701 ** DOCUMENTATION returns NIL instead of "" for method combinations
2702 that don't have a docstring
2704 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2705 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2706 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2707 therefore are not customizeable by user code (as seems to be at
2708 least permitted and maybe required by AMOP). As a consolation,
2709 however, the SBCL implementation of these functions now calls
2710 REINITIALIZE-INSTANCE as specified by AMOP.
2711 * bug fix: slot-definition documentation is propagated as per ANSI
2712 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2713 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2714 argument, as do eslotd initialization methods. (from Pascal
2715 Costanza's "Closer" project)
2716 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2717 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2719 * bug fix: it is now possible to have more than one subclass of
2720 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2721 (reported by Bruno Haible, Pascal Costanza and others)
2722 * bug fix: the dependent update protocol now works for generic
2723 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2724 and Pascal Costanza)
2725 * bug fix: condition-class instances corresponding to
2726 DEFINE-CONDITION forms are now created eagerly. (reported by
2727 Kalle Olavi Niemitalo on comp.lang.lisp)
2728 * bug fix: floating point printing is more accurate in some
2729 circumstances. (thanks to Simon Alexander)
2730 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2731 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2732 * bug fix: callbacks on OS X now preserve stack-alignment.
2733 (thanks to Cyrus Harmon)
2734 * enhancement: the x86-64 disassembler is much better at
2735 disassembling SSE instructions. (thanks to Lutz Euler)
2736 * enhancement: CHECK-TYPE on a variable now allows type-inference
2737 (thanks to Vincent Arkesteijn)
2738 * optimization: improved performance of EUC-JP external format.
2739 (thanks to NIIMI Satoshi)
2740 * optimization: performance improvements to IO on file streams of
2741 :ELEMENT-TYPE CHARACTER
2742 * optimization: much faster memory allocation on x86-64
2743 * optimization: faster garbage collections (latency and throughput)
2745 * optimization: faster bignum subtraction and division on x86 and x86-64
2746 (thanks to Lutz Euler)
2747 * optimization: more accurate type-inference for loops that use a
2748 floating point index variable or a negative step.
2750 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2751 * bug fix: add a workaround to SBCL looping infinitely at startup on
2752 Linux kernels with apparently buggy implementations of personality().
2753 (thanks to Svein Ove Aas)
2754 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2755 (thanks to David Lichteblau)
2756 * bug fix: local bindings shadow global symbol macros for
2757 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2758 * optimization: non-open coded uses of numeric comparison operators
2759 (e.g. >) no longer cons when called with more than one parameter
2760 on platforms supporting dynamic-extent allocation.
2761 * enhancement: saving cores with foreign code loaded is now supported
2762 on MIPS/Linux in addition to the previously supported platforms.
2763 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2764 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2765 * bug fix: division by zero in sb-sprof when no samples were collected
2766 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2767 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2768 (thanks to Alexander Kjeldaas)
2769 * new feature: ignoring the return values of destructive functions
2770 like NREVERSE signals a compile-time style-warning.
2771 (thanks to Kevin Reid)
2772 * new feature: the alignment of alien structure fields can be
2773 explicitly specified. (thanks to Cyrus Harmon)
2774 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2775 and dump core on SIGQUIT
2777 ** incompatible change: threads do not inherit values of specials
2778 from their parents (see manual)
2779 ** bug fix: threads stacks belonging to dead threads are freed by the
2780 next exiting thread, no need to gc to collect thread stacks anymore
2781 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2782 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2783 ** bug fix: dynamic variable and thread start related gc lossage
2784 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2786 * fixed some bugs revealed by Paul Dietz' test suite:
2787 ** SUBTYPEP is slightly more accurate on heinously complicated
2788 CONS types where some of the members have uncertain (in the
2789 NIL, NIL sense) type relationships to each other.
2791 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2792 no longer purified unless :PURIFY T is explicitly specified.
2793 ** Non-purified cores are significantly smaller than before
2795 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2796 * new feature: timers based on Zach Beane's excellent timer package
2797 * added support for the following external formats: koi8-u,
2798 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2799 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2800 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2801 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2802 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2803 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2804 * incompatible change: a threaded SBCL will no longer revert to
2805 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2806 * bug fix: interrupts are disabled until startup is complete; no
2807 more sigsegvs when receiving a signal to soon
2808 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2810 * bug fix: add a workaround for the memory randomization features in
2811 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2812 workaround will only be in effect on systems with the proc filesystem
2814 * bug fix: printing objects of type HASH-TABLE signals a
2815 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2817 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2818 have been running for over 50 days. (reported by Gilbert Baumann)
2819 * bug fix: the logic for getting names of functions gets less
2820 confused when confronded with alternate-metaclass
2821 funcallable-instances. (reported by Cyrus Harmon)
2822 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2823 consistent, even on internal alternate-metaclass objects.
2824 * bug fix: flush closure information collected by physical
2825 environment analysis prepass before the main pass. (bug reported
2827 * bug fix: compiler pack phase does not modify a hashtable, which is
2828 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2829 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2830 may be expanded. (reported by Alexander <malishev> on c.l.l)
2831 * bug fix: no more style-warnings when compiling code using LAST
2832 under high-SPEED low-SPACE settings. (reported by David Wallin
2834 * fixed some incompatibilities between SBCL's MOP and the MOP
2836 ** the METAOBJECT class is now implemented;
2837 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2838 STANDARD-OBJECT, as required;
2839 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2840 now compatible (as required by VALIDATE-SUPERCLASS); there
2841 remains a consistency requirement over the presence or absence
2842 of the FUNCTION class in the superclass list of finalized
2843 classes; see the manual for more details;
2844 ** the :AROUND method for COMPUTE-SLOTS on
2845 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2846 requested slot ordering.
2848 ** bug fix: parent thread now can be gc'ed even with a live
2850 ** bug fix: binding a special with PROGV to no value is not
2851 the same as that symbol not having been bound (thanks to
2853 ** bug fix: binding specials is thread safe (thanks to
2855 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2856 and SB-SPROF do not die with 'no handler for signal XX in
2857 interrupt_handle_now(..)' anymore
2858 ** bug fix: WITH-TIMEOUT works with multiple running threads
2859 * fixed some bugs revealed by Paul Dietz' test suite:
2860 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2861 the :method-class keyword argument.
2863 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2864 * new port: the Solaris operating system on x86 processors is now
2865 mostly supported, though some rough edges in the environment
2866 remain. (thanks to Daisuke Homma)
2867 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2868 space for its heap. (thanks to Thiemo Seufer)
2869 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2870 closures. (thanks to Thiemo Seufer)
2871 * minor incompatible change: eof selects abort in the debugger.
2872 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2873 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2875 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2876 deprecated, and will go away in a future revision of SBCL.
2877 * minor incompatible change: GC-ON and GC-OFF are no longer
2878 implemented with a counter, it does not matter how many times gc
2879 is switched on or off
2880 * bug fix: discriminating functions for generic function classes
2881 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2882 make invalid assumptions about method precedence order. (reported
2884 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2885 platforms. (thanks to Thiemo Seufer)
2886 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2887 * bug fix: correct pathname printing with printer escaping is on.
2888 (thanks to Kevin Reid)
2889 * bug fix: complex VOP definitions in "user-space" no longer trigger
2890 package locks. (reported by Zach Beane)
2891 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2892 for funcallable-instance functions, and is no different from
2894 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2895 characters in the current readtable. (reported by Nicholas Neuss)
2896 * bug fix: SUBTYPEP on various CONS types returns more a more
2897 accurate acknowledgment of its certainty.
2898 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2899 lists in some cases. This partially fixes bug 384.
2900 * flush all standard streams before prompting in the REPL and the
2902 * bug fix: signal handling and triggering gc do not conflict
2903 directly anymore, in particular a high frequency sb-sprof does
2904 not prevent gc from running
2905 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2906 approximation for timezone and DST information between the
2907 universal time epoch and the smallest negative 32-bit time_t.
2908 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2909 year 1899 so long as the encoded time is non-negative.
2910 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2911 the correct answer for non-constant rotate amounts when performing
2912 an inline 32-bit rotation.
2914 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2915 there is only one thread in the session
2916 ** bug fix: memory leak for streams created in one thread and
2917 written to in another
2918 ** bug fix: lockup when compiled with gcc4
2919 ** bug fix: race that allows the gc to be triggered when gc is
2921 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2922 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2924 ** bug fix: finished threads are gc'ed properly
2925 * fixed some bugs revealed by Paul Dietz' test suite:
2926 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2927 has arguments with a different set of applicable methods from
2928 the orignal arguments.
2929 ** The type error thrown by MAP now has a correct expected-type
2931 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2932 name a compiled function.
2933 ** Three MISC tests where a large bignum was improperly coerced to
2934 a float that couldn't represent that bignum during type
2935 derivation were fixed.
2936 ** SUBTYPEP can now handle types involving the negation of a
2937 list-form FUNCTION type.
2938 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2939 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2940 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2942 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2943 * New feature: Experimental support for bivalent streams: streams
2944 opened with :element-type :default now allow character and binary
2945 (unsigned-byte 8) I/O
2946 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2947 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2949 * bug fix: no more highly sporadic "couldn't check whether ~S is
2950 readable" when reading a stream and an interrupt hits in the middle
2951 of a select system call
2952 * compiler better recognizes complex arrays (reported by Eduardo
2954 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2955 for variables on SBCL built with linkage-tables. (reported by Luis
2957 * various error reporting improvements.
2958 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2959 (Thanks to Thiemo Seufer)
2960 * bug fix: nested reader invokations work correctly
2961 * bug fix: it is possible to have simultaneous references to foreign
2962 code and foreign data with the same name.
2964 ** added x86-64 support
2965 ** incompatible change: the threading api now works with thread
2966 objects instead of thread ids
2967 ** bug fix: threads are protected from signals and interruption when
2968 starting up or going down
2969 ** bug fix: a race where an exiting thread could lose its stack to gc
2970 ** bug fix: don't halt on infinite error in threads if possible
2971 ** fixed numerous gc deadlocks introduced in the pthread merge
2972 ** bug fix: fixed thread safety issues in read and print
2973 ** bug fix: debugger doesn't hang on session lock if interrupted at
2974 an inappropriate moment
2975 ** bug fix: run-program is now thread safe(r)
2976 ** bug fix: inner with-recursive-lock no longer releases the mutex
2977 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2978 * fixed some bugs revealed by Paul Dietz' test suite:
2979 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2980 EXPECTED-TYPE slots filled.
2981 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2983 ** MAKE-CONDITION accepts classes as type-designators.
2984 ** COMPILE may never return NIL.
2985 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2986 range before calling Unix time functions
2988 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2989 * numerous signal handling fixes to increase stability
2990 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2991 * minor incompatible change: we now correctly canonize default
2992 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2993 as per the MOP, rather than the historical (INITARG INITFUNCTION
2994 INITFORM). (reported by Bruno Haible)
2995 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2996 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2997 for more information.
2998 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2999 pathname is a directory pathname.
3000 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3001 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3003 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3004 :METACLASS argument in addition to a class name. (reported by
3005 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3006 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3007 (reported by Bruno Haible; patch from Gerd Moellmann)
3008 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3010 * bug fix: more cleanups to the floating point exception handling on
3011 x86-64 (thanks to James Knight)
3012 * bug fix: the compiler does not try to constant fold calls of
3013 COERCE and BIT-* functions when they return freshly constructed
3014 objects. (reported by Nikodemus Siivola and Paul Dietz)
3015 * optimization: improved the MIPS versions of generic (in the
3016 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3017 * optimization: direct conversion of (unsigned-byte 32) to floats on
3018 the PowerPC platform.
3019 * optimization: structure instances with raw slots now use less
3020 memory, and probably show better memory locality. (thanks to
3022 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3023 are treated as requests for stack allocation on the x86-64,
3024 Alpha-32, PPC and SPARC platforms.
3025 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3026 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3027 (thanks to Tony Martinez)
3029 ** gcing a dead thread can no longer lead to lockups
3030 ** threads block signals until they are set up properly
3031 ** errno is no longer shared by threads
3032 ** interrupt-thread restores the eflags register on x86
3033 ** fixed some lockups due to gc/thread interaction
3034 * fixed some bugs revealed by Paul Dietz' test suite:
3035 ** invalid dotted lists no longer raise a read error when
3036 *READ-SUPPRESS* is T
3037 ** signal an error if a symbol that names a declaration is used
3038 as the name of a type, or vice versa
3039 ** allow using the (declare (typespec var*)) abbreviation for
3040 (declare (type typespec var*)) with all type specifiers
3041 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3042 ** always return NIL from PPRINT-POP when OBJECT is NIL
3043 ** don't signal errors when pretty-printing malformed LABELS,
3044 FLET or MACROLET forms
3045 ** declarations in a DOLIST body are also in scope for the
3047 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3049 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3052 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3053 * fixed cross-compiler leakages that prevented building a 32-bit
3054 target with a 64-bit host compiler.
3055 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3056 opened with :IF-EXISTS :OVERWRITE.
3057 * fixed bug 281: error for an invalid qualifier in a short-form method
3058 combination method is not signalled until the faulty method is called.
3059 * bug fix: iteration variable type inferrer failed to deal with open
3060 intervals. (reported by Alan Shields)
3061 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3062 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3063 or more runtime options were provided to the sbcl binary.
3064 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3065 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3066 * optimization: there's now a fast-path for fixnum arguments in the
3067 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3068 * optimization: the code generated on x86-64 is more compact thanks
3069 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3070 * bug fix: floating-point exception handling now partly works on
3071 x86-64. (Thanks to James Knight)
3072 * improvement to the MIPS backend from Thiemo Seufer: C-style
3073 64-bit long long arguments and return values to alien functions
3075 * fixed some bugs revealed by Paul Dietz' test suite:
3076 ** the type-error signalled from WARN has a filled-in DATUM slot.
3077 ** the type-error required when a stream is not associated with
3078 a file has the stream as its datum.
3079 ** type-errors on single-floats on x86-64 no longer have
3080 :INVALID-OBJECT as the datum
3081 ** the type-errors signalled for invalid function names now have
3082 a correct expected type
3083 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3084 for structures defined with a :TYPE. Documentation strings for
3085 typed structures are no longer immediately discarded
3086 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3087 broadcast streams and synonym streams. FILE-LENGTH now also works
3088 on broadcast streams.
3090 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3091 * incompatible change: the --noprogrammer option, deprecated since
3092 version 0.7.5, has been removed. Please use the equivalent
3093 --disable-debugger option instead.
3094 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3096 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3097 inoperational for a while now) has been completely removed.
3098 * null lexical environments are now printed as #<NULL-LEXENV>,
3099 significantly reducing the amount of clutter in typical backtraces.
3100 * documentation on weak pointers, finalization, and after GC hooks
3101 has been added to the manual.
3102 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3103 as other specialized array types, is much faster. SUBSEQ and
3104 COPY-SEQ on such arrays have also been sped up.
3105 * optimization: EQL is now more efficient when at least other argument
3106 is known to be of type (OR FIXNUM (NOT NUMBER)).
3107 * fixed bug: the runtime is now less vulnerable to changes in the
3108 size of the SBCL object on OS X, and virtual memory is reserved for
3109 all spaces that need to be at a fixed address.
3110 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3111 * fixed bug: finalizers and after GC hooks that cause consing are now
3113 * fixed bug: compiler error messages and summaries are now printed to
3114 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3115 * fixed inference of the upper bound of an iteration variable.
3116 (reported by Rajat Datta).
3117 * fixed bug 211e: calling local functions with duplicated constant
3118 keyword argument no longer causes a bogus style warning about an
3120 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3121 ftype declaration to be disregarded. (reported by Dave Roberts)
3122 * fixed bug 373: caused by erronous compilation of references to alien
3123 variables in the runtime on ppc/darwin.
3124 * fixed bug 376: CONJUGATE type deriver.
3125 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3126 (reported by Baughn on #lisp)
3127 * a cross-compiler bug on non-x86 platforms has been identified and
3128 fixed. (thanks to Bruno Haible)
3129 * improvements to the MIPS runtime code for increased stability.
3130 (thanks to Thiemo Seufer)
3131 * increased the maximimum compact environment size to allow
3132 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3133 * partial workaround for bug 135: don't name the function we're
3134 calling for hairy cases of EVAL, so as not to accumulate one environment
3135 entry per call to EVAL. (reported by Kevin Reid)
3136 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3137 * optimization: type testing for non-vector arrays should be faster.
3138 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3140 * bug fix: setting 31st element of a bit vector to zero did not work
3142 * bug fix: redefining a class definition which failed due to a
3143 previous accessor / function clash now works (but see BUGS entry
3144 #380 for more problems in this area). (thanks to Zach Beane)
3145 * the long form of DEFINE-METHOD-COMBINATION disables method group
3146 checking when given a single method group with pattern *. (thanks
3148 * on x86 compiler supports stack allocation of results of simple
3149 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3150 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3151 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3152 * fixed some bugs related to Unicode integration:
3153 ** the restarts for recovering from input and output encoding
3154 errors only appear when there is in fact such an error to
3156 * fixed some bugs revealed by Paul Dietz' test suite:
3157 ** MISC.549 and similar: late transformation of unsafe type
3158 assertions into derived types caused unexpected code
3160 ** SCALE-FLOAT type deriver is less wrong.
3161 ** type derivers for EXP, LOG and similar functions compute result
3162 types for complex arguments better.
3163 ** (MISC.563) CONJUGATE type deriver works for very restricted
3165 ** out-of-line type testers for character strings are available.
3166 ** EQUAL compiler transform understands specialness of objects
3168 ** accessing double-floats stored on the stack now works on x86-64.
3169 ** debugger internals could sometimes create invalid lispobjs,
3170 resulting in GC crashes.
3171 ** MISC.548: type check weakening can convert required type into
3173 ** initialization forms for bindings are not in scope of free special
3176 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3177 * incompatible change: thread support for non-NPTL systems has
3178 been removed - locking is buggy and unreliable. A threaded
3179 SBCL build will now warn at startup and refuse to create
3180 new threads, unless futex support is detected in the kernel
3181 * incompatible change: the top level REPL now has only an ABORT
3182 restart associated with it, not TOPLEVEL and ABORT as it used to.
3183 TOP and TOPLEVEL are now available as debugger commands for
3184 returning to the top level.
3185 * incompatible change: forms evaluated in the REPL now use the
3186 global optimization policy.
3187 * incompatible change: user- and system-initialization files are
3188 no longer processed with LOAD, but by READ and EVAL; hence the
3189 global optimization policy, startup package, readtable, etc,
3191 * The .fasl file format number has been incremented because of
3192 various incompatible changes.
3193 * internal entry point details and argument counts no longer appear
3194 in backtraces unless explicitly requested by setting
3195 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3196 * built-in and standard functions no longer have names like "top
3197 level local call to FOO".
3198 * fixed bug 32: functions defined in non-null lexical environments
3199 now have more legible printed representation
3200 * fixed bug 33: functions defined in non-null lexical environemnts
3201 are now more amenable to inspection by INSPECT.
3202 * workaround for bug 354: XEPs no longer appear in backtraces unless
3203 explicitly requested.
3204 * fixed bug: receiving the signal which results from attempting to
3205 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3206 SIGBUS on other *BSDs) on architectures where the C stack is also
3207 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3208 to debugger confusion or wild instability. (reported by Cheuksan
3210 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3211 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3212 (reported by Lutz Euler)
3213 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3214 compiled code. (reported by Paul Dietz)
3215 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3216 specialized parameter to a method to something that is not TYPEP
3217 the specializer is now possible.
3218 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3219 face of package deletion.
3220 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3221 pathname. (reported by David Tolpin on c.l.l)
3222 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3223 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3224 STRING-STREAM and FILE-STREAM, respectively.
3225 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3226 than previously; in addition, its test suite is now run on build.
3227 (thanks to Luke Gorrie)
3228 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3229 * optimization: added a immediate representation for single-floats
3231 * fixed some bugs revealed by Paul Dietz' test suite:
3232 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3233 ** attempting to create a package with a colliding nickname causes
3234 correctable errors to be signalled.
3235 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3236 ** several x86-64 backend bugs related to sign-extension of immediate
3239 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3240 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3241 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3243 * fixed loading of multiply forward-referenced layouts.
3244 (thanks to Cheuksan Wang)
3245 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3246 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3247 (see COMPILE-FILE documentation for details of :PRINT option)
3248 * fixed bugs 19 and 317: fixed-format floating point printing is
3249 more accurate. This also fixes a bug reported by Adam Warner
3250 related to the ~@F format directive.
3251 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3253 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3254 dispatch table if the from-char is a dispatch macro character.
3255 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3256 by the wordsize no longer ignore the last word. (reported by Lutz
3258 * fixed bug in type checking of dynamic-extent variables. (reported
3260 * optimization: sequence traversal functions use their freedom to
3261 coerce function designators to functions.
3262 * optimization: code with many calls to CLOS methods specialized on
3263 CLOS classes has had redundant type checks removed.
3264 * optimization: added declarations to speed up operations that access
3265 the internal character database (for example STRING-UPCASE)
3266 * optimization: comparison operations between floats and sufficiently small
3267 fixnums no longer create extra rationals
3268 * fixed some bugs related to Unicode integration:
3269 ** portions of multibyte characters at the end of buffers for
3270 character-based file input are correctly transferred to the
3271 start of the buffer at the next read.
3272 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3273 passing it through to OPEN.
3274 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3275 argument given to internal calls to OPEN.
3276 ** the built-in comment readers (introduced by character sequences
3277 ";" and "#|") are more forgiving to encoding errors; they will
3278 STYLE-WARN and then attempt to resync the stream at a character
3279 boundary. (thanks to Teemu Kalvas)
3280 * fixed some bugs in the x86-64 port:
3281 ** Negative short int return values from c-calls are sign-extended
3283 ** The stack is aligned to 16-bytes for c-calls, as required by
3284 the ABI. (thanks to Cheuksan Wang)
3285 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3286 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3287 for enums. (thanks to Vincent Arkesteijn)
3288 ** Multiple small optimizations and bugfixes for floating point
3290 * fixed some bugs revealed by Paul Dietz' test suite:
3291 ** Space, Tab, Linefeed, Return and Page have the invalid
3292 secondary constituent character trait.
3293 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3295 ** WITH-INPUT-FROM-STRING should only update the index place on
3297 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3298 works more reliably.
3299 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3300 with one-dimensional arrays with fill pointers.
3301 ** TYPE-OF failed on a complex with an integer realpart and a
3303 ** compiler failure during type inference for the code of form
3304 (IF (EQL X (THE ...)) ...) (MISC.535).
3306 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3307 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3308 platform. The port supports 61-bit fixnums, large memory spaces
3309 and reloading shared object files.
3310 * enhancement: saving cores with foreign code loaded is now
3311 supported on ppc/Darwin in addition to the previously supported
3313 * enhancement: the statistical profiler now walks deeper into the
3314 call stack for more meaningful call-graphs and accrued time
3315 reports (x86/x86-64 only). It also now reports time spent in
3317 * enhancement: it is now possible to trace most individual methods
3318 of a generic function in addition to tracing the generic function
3320 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3322 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3323 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3324 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3325 produces an error. (thanks to Vincent Arkesteijn)
3326 * bug fix: NAMESTRING on pathnames with :WILD components in their
3327 directories works correctly. (thanks to Artem V. Andreev)
3328 * fixed bug 125: compiler preserves identity of closures. (reported
3330 * bug fixed: functions with &REST arguments sometimes failed with
3331 "Undefined function" when compiled with (DEBUG 3). (reported by
3333 * bug fix: overflow during compiling of setting element of a bit
3334 vector with constant index and value. (reported by Timmy Douglas)
3335 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3336 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3337 * on x86 compiler partially supports stack allocation of dynamic-extent
3339 * GO and RETURN-FROM do not check the extent of their exit points
3340 when compiled with SAFETY 0.
3341 * fixed some bugs related to Unicode integration:
3342 ** encoding and decoding errors are now much more robustly
3343 handled; it should now be possible to recover even from invalid
3344 input or output to the terminal. (thanks to Teemu Kalvas)
3345 ** provided a first cut at implementing STRING-TO-OCTETS and
3346 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3347 ** altered the SB-MD5 contributed module slightly, changing the
3348 interface just enough for it to be supportable for builds where
3349 lisp characters are not eight bits.
3350 * fixed some bugs revealed by Paul Dietz' test suite:
3351 ** the FORMATTER-generated functions for ~V[ conditionals require
3352 the correct number of arguments.
3353 ** READ-FROM-STRING returns the mandated second value when applied
3354 to displaced strings.
3355 ** the #\Rubout and #\Backspace characters are treated as invalid
3356 constituent characters by the tokenizer.
3358 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3359 * new feature: reloading changed shared object files with
3360 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3361 * new feature: references to foreign variables and functions
3362 can now be compiled and loaded before the corresponding shared
3363 object file is loaded, as long as the foreign definitions are
3364 available at runtime.
3365 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3366 supported. (thanks to Dan Debertin)
3367 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3368 just keywords. (thanks to Vincent Arkesteijn)
3369 * fixed bug #331: structure-class instances corresponding to
3370 DEFSTRUCT forms are now created eagerly.
3371 * fixed bug #345: backtraces from calls to undefined functions work
3372 on x86 as well. Related bug #61 is now also partially fixed on x86
3373 (backtraces from throws to unknown catch tags.)
3374 * bug fix: lambda-list parsing is now stricter vrt. order and number
3375 of lambda-list keywords.
3376 * bug fix: as specified by AMOP, an error is signalled if a
3377 class-option appears multiple times in a DEFCLASS form. (reported
3379 * bug fix: RANDOM can be compiled when the compiler derives the type
3380 of its numeric argument as a disjoint set of small integers.
3381 (reported by Paul Dietz)
3382 * bug fix: starting a core saved with shared objects loaded when
3383 those objects are not available no longer causes threaded SBCL to
3384 hang. (reported by Sean Ross)
3385 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3387 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3388 argument, which must always be NIL. (reported by Kalle Niemitalo)
3389 * bug fix: printing 1.0d+23 no longer results in an error.
3390 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3391 * bug fix: structure slot setters preserve evaluation order. (thanks
3393 * fixed some bugs related to Unicode integration:
3394 ** RUN-PROGRAM can allow its child to take input from a Lisp
3395 stream. (reported by Stefan Scholl)
3396 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3397 locales. (reported by Ken Causey)
3398 * fixed some bugs revealed by Paul Dietz' test suite:
3399 ** INCF, DECF and REMF evaluate their place form as specified in
3401 ** FORMATTER expands ~{ ~} iteration directives with V or #
3402 parameters correctly.
3403 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3404 consequent uses no arguments correctly.
3405 ** the system has a partial understanding of the (COMPLEX RATIO)
3407 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3410 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3411 * new feature: a build-time option (controlled by the :SB-UNICODE
3412 keyword feature, enabled by default) for building the system with
3413 support for the entire 21-bit character space defined by the
3415 * new feature: the system now has rudimentary external-format
3416 support; the primary user-visible change at this time is that
3417 characters with the high bit set (such as lower-case-e-acute) will
3418 print correctly to a terminal in a UTF-8 environment.
3419 * minor incompatible change: BASE-CHAR no longer names a class;
3420 however, CHARACTER continues to do so, as required by ANSI.
3421 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3422 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3423 has been moved to the SB-EXT package (temporarily re-exported from
3425 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3426 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3428 * fixed bug #351: better error-handlind and reporting for malformed
3430 * fixed bug #350: bignum-printing is now more memory-efficient,
3431 allowing printing of very large bignums, eg. (expt 2 10000000).
3432 (reported by Bruno Haible)
3433 * fixed bug #302: better primitive-type selection for intersection
3435 * fixed bug #308: non-graphic characters now all have names, as
3436 required. (reported by Bruno Haible)
3437 * bug fix: redefining a class with different superclasses now correctly
3438 removes it from the direct-subclasses of its previous superclasses.
3439 (reported by David Morse)
3440 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3441 new value now works. (reported by Bruno Haible)
3442 * bug fix: correct canonicalization of multiple non-standard slot
3443 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3444 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3445 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3446 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3447 now exists, an signals an error.
3448 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3449 during macroexpansion for non-iteration variables as well. (reported
3450 by Bruno Haible for CMUCL)
3451 * bug fix: Cyclic structures and unprintable objects in compiler
3452 messages no longer cause errors. (reported by Bruno Haible)
3453 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3454 and READ-FROM-STRING all now return a primary value of NIL if
3455 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3456 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3457 (reported by Bruno Haible for CMUCL)
3458 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3459 do not designate a condition. (reported by Bruno Haible for
3461 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3462 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3463 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3464 permitting resolution in favour of any of the conflicting symbols.
3465 (reported by Bruno Haible for CMUCL)
3466 * bug fix: EQUAL compiler optimizations is less aggressive on
3467 strings which can potentially compare true despite having distinct
3468 specialized array element types.
3469 * bug fix: unit enumerations can be defined without dividing by
3470 zero. (thanks to Vincent Arkesteijn)
3471 * FORMAT compile-time argument count checking has been enhanced.
3472 (report from Bruno Haible for CMUCL)
3473 * a partial workaround for the bug 262: the compiler does not try to
3474 inline-expand a local function doing RETURN-FROM from a deleted
3475 BLOCK. (thanks to Peter Denno for the bug report and to David
3476 Wragg for the simple test case)
3477 * fixed some bugs revealed by Paul Dietz' test suite:
3478 ** RENAME-PACKAGE allows all package designators as new package
3480 ** constraint propagation and lambda variable substitution are
3481 more cautious in dealing with partially deleted code.
3482 ** compiler sometimes lost reoptimization passes.
3483 ** CERROR, given a condition as condition designator, passes its
3484 remaining arguments to the continue format control without
3486 ** Case-altering FORMAT directives work correctly on non-ASCII
3488 ** The REAL type specifier handles bounds outside the floating
3489 point ranges without signalling FLOATING-POINT-OVERFLOW.
3490 ** Functions with IR1-transformations can create intercomponent
3491 references to global functions.
3492 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3494 ** FORMAT ~R treats a nil value for its first parameter correctly.
3496 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3497 * enhancement: saving cores with foreign code loaded is now
3498 supported on x86/NetBSD and sparc/Linux in addition to the previously
3499 supported platforms.
3500 * bug fix: on some platforms repeated installations caused multiple
3501 copies of HTML documentation to be installed -- should not happen
3502 any more. (reported by Stefan Scholl)
3503 * bug fix: parsing self-recursive alien record types multiple times
3504 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3505 original patch by Helmut Eller for CMUCL)
3506 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3507 (thanks to Richard Kreuter)
3508 * bug fix: defining classes whose accessors are methods on existing
3509 generic functions in other (locked) packages no longer signals
3510 bogus package lock violations. (reported by François-René Rideau)
3511 * bug fix: special variables as DEFMETHOD parameters no longer have
3512 associated bogus type declarations. (reported by David Wragg and
3514 * bug fix: read-write consistency on streams of element-type
3515 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3516 * bug fix: redefiniton of the only method of a generic function with
3517 no DEFGENERIC no longer emits a full WARNING. In addition,
3518 redefinition of generic functions with no DEFGENERIC to an
3519 incompatible lambda list now signals an error. (thanks to Zach
3521 * bug fix: DEFGENERIC now works even when there's a function of the
3522 same name in an enclosing lexical environment. (thanks to Zach
3524 * fixed compiler failure, caused by instrumenting code during
3525 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3526 * optimization: added loop analysis and improved register allocation
3527 * fixed some bugs revealed by Paul Dietz' test suite:
3528 ** POSITION on displaced vectors with non-zero displacement
3529 returns the right answer.
3530 ** (SIMPLE-STRING) is a valid type specifier for sequence
3532 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3534 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3535 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3537 ** The justification version of the FORMAT ~< directive treats
3538 non-zero minpad parameter correctly.
3540 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3541 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3542 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3543 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3544 the supported interface.
3545 * new feature: Single-stepping of code compiled with DEBUG 2 or
3546 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3547 * new feature: saving cores with foreign code loaded is now
3548 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3549 Timothy Moore's work for CMUCL)
3550 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3551 parameters to * instead of NIL if no initform is supplied.
3552 (reported by Johan Bockgaard)
3553 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3554 correctly when FUNCALL appears as the car of the form. Note:
3555 despite this FUNCALL forms are not currently subject to
3556 compiler-macro expansion. (port of Raymond Toy's fix for the
3557 same from CMUCL, reported by Johan Bockgaard)
3558 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3559 (thanks for Teemu Kalvas)
3560 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3561 case instead of terminating the iteration (thanks for Julian
3562 Squires, Sean Champ and Raymond Toy)
3563 * bug fix: incorrect expansion of defgeneric that caused a style
3564 warning. (thanks for Zach Beane)
3565 * bug fix: slot accessor effective method computation works properly
3566 for classes with multiple non-standard applicable methods on
3567 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3568 * on x86 compiler supports stack allocation of results of LIST and
3569 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3570 CMUCL implementation by Gerd Moellmann)
3571 * fixed some bugs revealed by Paul Dietz' test suite:
3572 ** FORMAT strings with both the ~<~:;~> form of the justification
3573 directive and pretty-printing directives cause an error.
3575 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3576 * incompatible change: the internal functions
3577 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3578 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3579 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3580 instead of the old functions.
3581 * new feature: on platforms where "dladdr" is available foreign
3582 function names now appear in backtraces. (based on Helmut Eller's
3584 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3585 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3587 * documentation: ASDF manual is now distributed with SBCL.
3588 * bug fix: SBCL can now load its contributed modules with REQUIRE
3589 even if the system-provided entries have been removed from
3590 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3592 * bug fix: backtraces involving undefined functions or assembly
3593 routines are more informative. (thanks to Brian Downing)
3594 * bug fix: mutually referent alien structures now work correctly.
3595 (reported by Rick Taube)
3596 * bug fix: structures defined by WITH-ALIEN can be referred to
3597 within other definitions in the same WITH-ALIEN.
3598 * bug fix: division operators (MOD, TRUNCATE and the like) with
3599 constant zero divisors and integer dividends no longer generate
3601 * bug fix: provide default methods for INPUT-STREAM-P and
3602 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3603 * bug fix: improve the detection and resolution of MOP metacycles
3604 (where effective method computation depends on the generic function
3605 having its effective method computed). (reported by Bruno Haible)
3606 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3607 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3608 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3609 * bug fix: pathnames with relative directory components can be
3610 represented relative to default pathnames.
3611 * optimization: in taking the GCD of bignums, reduce the two bignums
3612 to approximately the same size (using Euclid's algorithm) before
3613 applying the more sophisticated binary GCD. (thanks to Juho
3615 * optimization: COUNT on bitvectors now operates word-at-a-time.
3616 * optimization: ASH with a positive, but not necessarily constant,
3617 (leftwards) shift, when in a modular context, is compiled to a
3619 * fixed some bugs revealed by Paul Dietz' test suite:
3620 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3621 if the corresponding argument is NIL.
3622 ** FORMAT directives accepting a minpad parameter treat negative
3624 ** literal commas as character parameters to FORMAT directives are
3626 ** literal spaces directly after ~<Newline> directives within a
3627 format-logical-block (~:< ~@:>) do not induce :FILL-style
3628 conditional newlines.
3629 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3630 as specified: it no longer includes conditional newlines).
3631 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3633 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3634 :PER-LINE-PREFIX argument does not evaluate to a string.
3636 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3637 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3638 the manual for details; for now, package locks can be disabled by
3639 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3640 if no major problems are found then it is likely that they will be
3641 compiled in unconditionally.
3642 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3643 unsupported operators on all platforms. To load a shared library
3644 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3645 object file, link it into a shared library outside of SBCL and
3646 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3648 * bug workaround: ROOM T and the GC were not working together
3649 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3650 reporting facility aren't preserved. That reporting has been
3651 disabled, so now until and unless someone figures out how to make it
3652 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3653 * minor incompatible change: as threatened around sbcl-0.8.0, the
3654 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3655 The symbols are also exported from SB-PCL for backwards
3656 compatibility, but more so than before SB-PCL should be treated as
3657 an implementation-internal package.
3658 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3660 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3661 It is known as of this release not to work on the Alpha, however.
3662 * fixed bug #167: errors signalled due to illegal syntax in method
3663 bodies are now more legible.
3664 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3665 designators and can hence be used with TYPEP.
3666 * fixed bug #333: CHECK-TYPE now ensures that the type error
3667 signalled, if any, has the right object to be accessed by
3668 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3669 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3670 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3672 * fixed bug #334: programmatic addition of slots using specialized
3673 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3674 and :ALLOCATION :CLASS slots.
3675 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3676 float exponents. (rereported by Peter Seibel)
3677 * fixed a bug: #\Space (and other whitespace characters) are no
3678 longer considered to be macro characters in standard syntax by
3679 GET-MACRO-CHARACTER.
3680 * fixed bug: initialization of condition class metaobjects no longer
3681 causes an instance of the condition to be created. (reported by
3683 * fixed bug: it is now possible to have slots such that
3684 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3685 description is neither :INSTANCE nor :CLASS.
3686 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3687 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3688 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3689 non-standard SLOT-DEFINITION-ALLOCATION values.
3690 * fixed bugs: various race conditions handling exiting threads.
3691 CL-PPCRE's thread torture test now passes.
3692 * fixed arguably-a-bug: GC time proportional to number of threads in
3693 system even when most of them are idle
3694 * optimization: improved performance of BIT and SBIT on bit-vectors.
3695 * .fasl file incompatibility: The fasl file version number has
3696 been incremented because of changes associated with package locks.
3698 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3699 * minor incompatible change: the system no longer provides
3700 optimization hints (conditions which are TYPEP
3701 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3702 mode; these hints are still emitted when higher SPEED optimization
3704 * new contrib module: a sampling profiler (profiling by statistical
3705 sampling, rather than by instrumenting functions) is available as
3706 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3707 * the behaviour of the standard function ED is now customizeable by
3708 third parties through a hook variable: see ED's documentation
3709 string for information on the protocol.
3710 * the compiler no longer emits efficiency notes for (FUNCALL X)
3711 when the type of X is uncertain under default optimization
3713 * fixed bug 276: mutating a binding of a specialized parameter to a
3714 method to something that is not TYPEP the specializer is now
3716 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3717 exhibit the required behaviour on the x86 platform. (thanks to
3718 Peter van Eynde, Eric Marsden and Bruno Haible)
3719 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3720 even for difficult arguments. (reported by Peter Graves)
3721 * fixed bug 141a: the backquote printer now descends quoted
3723 * fixed another bug in backquote printing: no more destructive
3724 modification of the form's list structure. (reported by Brian
3726 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3727 move between its address being taken and the call to
3728 interrupt_thread, fixing a crashing race condition.
3729 * the SB-POSIX contrib implementation has been adjusted so that it
3730 no longer exhibits ridiculously poor performance when constructing
3731 instances corresponding to C structs.
3733 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3734 * minor incompatible change: the sb-grovel contrib now treats C
3735 structures as alien (in the sense of SB-ALIEN) objects rather than
3736 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3737 has implications for memory management of client code
3738 (sb-grovel-returned objects must now be manually managed) and for
3739 type safety (alien objects now have full types).
3740 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3741 used to control emission of compiler diagnostics, rather than the
3742 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3743 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3744 quality should be considered deprecated.
3745 * install.sh now installs the user manual as well
3746 * (not quite a new documentable feature, but worth considering in
3747 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3748 beginnings of a semantically meaningful condition hierarchy is
3749 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3751 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3752 designator as the defaults argument.
3753 * fixed bug: Displaced arrays whose displaced-to array has become
3754 too small now cause ARRAY-DIMENSION to signal an error, providing
3755 for safer bounds-checking. (reported by Bruno Haible)
3756 * fixed bug: DEFCLASS slot definitions with identical :READER and
3757 :WRITER names now signal a reasonable error. (reported by Thomas
3759 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3761 * fixed bug: Invalid slot specification errors now print correctly.
3762 (thanks to Zach Beane)
3763 * fixed bug 320: Shared to local slot value transfers in class
3764 redefinitions now happen corrently from superclasses as
3765 well. (reported by Bruno Haible)
3766 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3768 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3769 improper lists correctly. (reported by Bruno Haible)
3770 * fixed bug 313: source-transform for <fun-name> was erroneously
3771 applied to a call of a value of a variable with name <fun-name>.
3772 (reported by Antonio Menezes Leitao)
3773 * fixed bug 307: The obsolete instance protocol ensures that
3774 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3775 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3776 remove dead unknown-values globs from the middle of the stack.
3777 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3778 easier to resume long computations after using *BREAK-ON-SIGNALS*
3779 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3780 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3781 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3782 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3783 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3784 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3786 * fixed a (fairly theoretical) bug in string printing: if
3787 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3788 does not have array-element-type equal to the most general string
3790 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3791 function name. (thanks to Nikodemus Siivola)
3792 * fixed bug: compile-time format string checker failed on
3793 non-closed ~{. (reported by Thomas F Burdick)
3794 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3795 don't warn on legal loop code involving more than one aggregate
3796 boolean. (thanks to Nikodemus Siivola)
3797 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3798 in keyword position to MAKE-PACKAGE was not being reported as
3800 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3801 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3803 * fixed bugs 280 and 312: the checking for multiple definitions in a
3804 file is less likely to become confused by uses of inline
3806 * fixed bug: the #S reader macro performs the keyword coercion
3807 specified for slot names. (reported by Kalle Niemitalo)
3808 * fixed bug: lambda lists may contain symbols whose names start with
3809 & but are not lambda-list-keywords; their occurrence triggers a
3811 * fixed bug 321: define-method-combination argument lambda lists do
3812 not cause invalid code to be generated when &optional or &aux
3813 variables have default values. (reported by Bruno Haible)
3814 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3815 have CLOS classes; this appears also to have fixed reported
3816 instability in stack exhaustion detection.
3817 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3818 MUFFLE-WARNING when no associated restart is present is now
3820 * optimization: rearranged the expansion of various defining macros
3821 so that each expands into only one top-level form in a
3822 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3824 * optimization: used a previously little-used slot in symbols to
3825 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3827 * fixed some bugs revealed by Paul Dietz' test suite:
3828 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3830 ** Fixed an optimization bug related to inheritance of initforms
3831 from local to shared slots.
3832 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3833 ** CAST optimizer forgot to flush argument derived type.
3834 ** print/read consistency on floats is now orders of magnitude
3835 more likely. (thanks also to Bruno Haible for a similar report
3837 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3838 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3839 for objects of type REAL. Make it so.
3840 ** SXHASH is specified (infelicitously) to respect similarity,
3841 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3842 it so. (thanks to Markus Ziegler)
3843 ** on the Alpha, the compiler succeeds in compiling functions
3844 returning a known number of arguments greater than 63.
3845 ** fixed handling of invalid NIL arguments in keyword position
3847 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3849 ** provided a readably-printable representation for RANDOM-STATE
3851 ** ensured that pathnames, where they have a namestring, always
3852 print using #P"..." syntax.
3854 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3855 * Support for the forthcoming 2.0 version of the NetBSD kernel
3856 running on x86 hardware has been added. (thanks to Perry
3857 E. Metzger most immediately, and others for their past work)
3858 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3859 current release version; SBCL's OpenBSD support had been broken
3860 since about the time of OpenBSD's switch to ELF binary format.)
3861 * [placeholder for DX summary]
3862 ** user code with &REST lists declared dynamic-extent, under high
3863 speed or space and low safety and debug optimization policy.
3864 * The manual has been converted to Texinfo format and the debugger
3865 chapter from the cmucl manual has been added.
3866 * A facility has been added to extract documentation strings from
3867 sbcl and store them as Texinfo-formatted snippets for inclusion in
3868 the manual (via Texinfo's @include directive)
3869 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3870 the test case to Dave Roberts)
3871 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3872 pointers. (reported by Sean Ross)
3873 * bug fix: PROFILE output is printed nicely even for large numerical
3874 values. (thanks to Zach Beane)
3875 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3876 greater than 32 handle EOF correctly.
3877 * bug fix: on X86 an immediate argument of the IMUL instruction is
3878 correctly printed in disassembly. (thanks to Lutz Euler)
3879 * bug fix: class slots in redefined classes preserve their old
3880 values. (thanks to Bruno Haible and Nikodemus Siivola)
3881 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3882 succeeds. (reported by Marco Baringer)
3883 * fixed some bugs revealed by Paul Dietz' test suite:
3884 ** READ-SEQUENCE now works on ECHO-STREAMs.
3885 ** RATIONALIZE works more according to its specification. (thanks
3888 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3889 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3890 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3891 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3892 should matter to you only if you rebind the printer control
3893 variables and then find you want different bindings in the
3894 debugger than in the ordinary execution of your program.)
3895 * The runtime build system has been tweaked to support building
3896 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3897 assembler and linker. (thanks to Nikodemus Siivola)
3898 * Unbound, undefined, undeclared variables now trigger full
3899 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3900 more often programmer error than deliberate exploitation of undefined
3902 * optimization: the hash algorithm for strings has changed to one
3903 that is less vulnerable to spurious collisions. (thanks to Juho
3905 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3906 needless bounds checking. (thanks to Juho Snellman)
3907 * optimization: implemented multiplication as a modular
3908 (UNSIGNED-BYTE 32) operation on the PPC backend.
3909 * fixed some bugs revealed by Paul Dietz' test suite:
3910 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3912 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3913 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3914 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3916 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3918 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3920 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3921 their output stream on EOF from read.
3922 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3923 have been read to end-of-file.
3924 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3926 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3927 description of determination of which consecutive characters
3929 ** Printing the "Space" character with escaping on now yields "#\\ ",
3930 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3931 ** Reading floating-point numbers with *READ-BASE* set to a number
3932 less than 10 works correctly.
3933 ** Reading floating-point numbers with *READ-BASE* set to a number
3934 more than 10 works correctly.
3935 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3936 the readtable currently in effect.
3938 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3939 * minor incompatible change: parsing of namestrings on a physical
3940 (Unix) host has changed; numbers after the final #\. in a
3941 namestring are no longer interpreted as a version field. This is
3942 intented to be largely invisible to the user, except that the
3943 meaning of the namestring "*.*.*" has changed: it now refers to a
3944 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3945 should usually be replaced by
3946 (make-pathname :name :wild :type :wild :version :wild)
3947 with the added benefit that this is more likely to be portable.
3948 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3949 option to OPEN now signals an error if the file being opened
3950 exists; this may have an impact on existing code.
3951 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3952 signals received, on the PowerPC platforms (both Linux and
3953 Darwin). (thanks to Pierre Mai for pointing out the location of
3955 * several fixes on OS X: The system now builds and runs cleanly on
3956 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3957 (thanks to Brian Mastenbrook)
3958 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3959 second-resolution: integer multiples of 1/3600 between -24 and 24.
3960 (thanks to Vincent Arkesteijn)
3961 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3962 type when called with 1 argument; PEEK-CHAR checked type of
3963 PEEK-TYPE only after having read first character from a
3964 stream. (reported by Peter Graves)
3965 * bug fix: the garbage collector now has much better locality
3966 behaviour, and in particular no longer treats all memory as being
3967 exhausted when many small objects point to each other in a deeply
3969 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3970 recognized as being TYPEP their class.
3971 * bug fix: the PUSHNEW documentation string has been corrected.
3972 (thanks to Vincent Arkesteijn)
3973 * bug fix: defaulting of the value for the last of an atypically
3974 large number of multiple values being bound was not being
3975 performed correctly on the Alpha or PPC platforms
3976 * optimization: implemented multiplication as a modular
3977 (UNSIGNED-BYTE 32) operation on the x86 backend.
3978 * optimization: SEARCH on simple-base-strings can now be open-coded.
3979 (see also contrib/compiler-extras.lisp for inspiration for
3980 teaching the compiler about the Boyer-Moore algorithm).
3981 * value, returned by MAX (and MIN) called with several EQUALP, but
3982 not EQL, arguments now does not depend on compiler settings.
3983 * fixed some bugs revealed by Paul Dietz' test suite:
3984 ** in stack analysis liveness information is propagated from
3985 non-local entry points.
3986 ** pathwise CAST removing failed when the CAST node did not start
3988 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3989 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3991 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3992 host is already defined.
3993 ** RENAME-FILE works on streams instead of signalling an internal
3995 ** PEEK-CHAR uses the current readtable when determining whether
3996 or not a character is whitespace.
3997 ** MERGE-PATHNAMES handles the case when the pathname does not
3998 specify a name while the default-pathname specifies a version.
3999 ** Pathnames now stand a better chance of respecting print/read
4001 ** Attempting to use standardized file system operators with a
4002 pathname with invalid :DIRECTORY components signals a
4004 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4006 ** DIRECTORY on logical pathnames is more correct.
4007 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4008 signal a TYPE-ERROR if their argument is not a stream.
4009 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4010 designator argument does not designate a stream.
4011 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4012 examining the synonym.
4013 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4015 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4016 element-type larger than ([UN]SIGNED-BYTE 32).
4018 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4019 * When built with the :SB-FUTEX feature, threaded builds now take
4020 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4021 for faster/more reliable mutex and condition variable support.
4022 * Incompatible change (but one you probably shouldn't have been using
4023 anyway): the interface and code for arbitrating between multiple
4024 threads in the same user session has been redesigned.
4025 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4026 error when called without an explicit environment argument.
4027 (thanks to Nikodemus Siivola)
4028 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4029 confused about their position. (thanks to Adam Warner and Gerd
4031 * bug fix: Pretty printing backquoted forms with unquotations in the
4032 argument list position of various code constructs such as LAMBDA
4033 now works correctly. (reported by Paul Dietz)
4034 * bug fix: Pretty printing unquotations no longer loses all
4035 stream position information.
4036 * optimization: performance of string output streams is now less
4037 poor for multiple small sequence writes.
4038 * optimization: performance of CSUBTYPEP in the presence of complex
4039 expressions involving CONS and NOT many times has been improved.
4040 (reported by Paul Dietz)
4041 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4043 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4044 streams for the REPL, for the debugger, and so on. (thanks to
4046 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4047 * fixed some bugs revealed by Paul Dietz' test suite:
4048 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4049 is ignored if it is too small, rather than propagating through
4050 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4051 ** extremely complex negations of CONS types were not being
4052 sufficiently canonicalized, leading to inconsistencies in
4054 ** VALUES tranformer lost derived type.
4056 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4057 * fixed a bootstrapping bug: the build process no longer assumes
4058 that the various BOOLE-related constants have the same value in
4059 host and target lisps. (noted by Paul Dietz' test suite on an
4060 SBCL binary built from CLISP)
4061 * The system can now be dynamically linked on the MIPS platform,
4062 which enables dynamic loading of foreign code from Lisp. (thanks
4063 to Ralf Baechle for discussions on the MIPS ABI)
4064 * The system now records debugging information for its own source
4065 files in a filesystem-position-independent manner, relative to
4066 the "SYS" logical host.
4067 * fixed a compiler bug: MV-LET convertion did not check references
4068 to the "max args" entry point. (reported by Brian Downing)
4069 * tweaked disassembly notes to be less confident about proclaiming
4070 some instruction as an LRA. (thanks to Brian Downing)
4071 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4072 now each have their own history, command character, and other
4073 characteristics. (thanks to David Lichteblau)
4074 * fixed some bugs revealed by Paul Dietz' test suite:
4075 ** compiler failure in compiling LOGAND expressions including a
4077 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4078 shift greater than 32.
4079 ** FLUSH-DEST did not mark blocks for type check regeneration.
4080 ** HANDLER-CASE failed to accept declarations in handler clauses
4081 in some circumstances.
4083 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4084 * New code in contrib/sb-introspect (still probably not entirely
4085 stable yet) provides some support for smart Lisp development
4086 environments like SLIME.
4087 * The conditions signalled for errors occurring when loading .fasl
4088 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4089 in a way which should help ASDF recover gracefully.
4090 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4091 stuff has been cleaned up. If you code contrib/ stuff, this might
4092 affect you, and you can look at contrib/README, contrib/STANDARDS,
4093 and/or the 0.8.4.27 diff to check.
4094 * In full calls the compiler now does not generate checks for declared
4095 argument types for all arguments.
4096 * various threading fixes
4097 ** and some experimental patches which didn't make it into
4098 the main tree for this release, but which are shipped in
4099 contrib/experimental-thread.patch as a possible fix for some
4100 failures (deadlock, spinning...) in GC-intensive multithreaded
4102 * fixed PPC build problem (source code incompatibility of different
4103 library versions): added offsetof() hackery which attempts to divine
4104 where glibc maintainers put uc_mcontext today
4105 * fixed bug 282: compiler does not trust type assertions while passing
4106 arguments to a full call.
4107 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4108 &OPTIONAL VALUES type parameter.
4109 * fix bug 214: algorithm for noting rejected templates is now more
4110 similar to that of template seletion. (also reported by rydis on
4112 * fixed bug 141b: printing backquoted information readably and prettily
4113 inserts a space where necessary.
4114 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4115 (CHARACTER 10) are now reported as errors, rather than propagated
4116 as unknown types. (reported by piso on #lisp)
4117 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4118 with values NIL and :ERROR. (thanks to Milan Zamazal)
4119 * fixed bug 191c: CLOS now does proper keyword argument checking as
4120 described in CLHS 7.6.5 and 7.6.5.1.
4121 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4122 longer raise an error; further, using a list as a for-as-arithmetic
4123 counter now raises a meaningful error.
4124 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4125 now understood by sequence creation functions such as MAKE-SEQUENCE
4127 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4128 a STRING-INPUT-STREAM.
4129 * compiler enhancement: SIGNUM is now better able to derive the type
4131 * type declarations inside WITH-SLOTS are checked. (reported by
4133 * fixed some bugs revealed by Paul Dietz' test suite:
4134 ** incorrect optimization of TRUNCATE for a positive first
4135 argument and negative second.
4136 ** compiler failure in let-convertion during flushing dead code.
4137 ** compiler failure while deriving type of TRUNCATE on an
4138 interval, containing 0.
4139 ** ASH of a negative bignum by a negative bignum count now returns
4141 ** intersection of CONS types now canonicalizes properly, fixing
4142 inconsistencies in SUBTYPEP.
4144 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4145 * incompatible change: The --disable-debugger command line
4146 option now clobbers the debugger at a more fundamental
4147 level, by redefining #'INVOKE-DEBUGGER instead of by
4148 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4149 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4150 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4151 enter the debugger REPL and then suffer recursive errors
4152 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4153 while under the new system, BREAK in --disable-debugger mode
4154 terminates the system just as an unhandled error would.
4155 * fixed compiler performance when processing loops with a step >1;
4156 * bug fix: DOCUMENTATION now retrieves generic function
4157 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4158 support has been systematized, and now supports the methods
4159 specified by ANSI, along with a default method and a method for
4160 slot documentation. (reported by Nathan Froyd)
4161 * bug fix: effective methods associated with a generic function are
4162 no longer cached over a change of that generic function's method
4163 combination. (reported by Andreas Fuchs)
4164 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4165 names a non-existent directory. (thanks to Andreas Fuchs)
4166 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4167 the PPC platform, lead to stack corruption; this has been fixed.
4168 (reported by Rainer Joswig)
4169 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4170 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4171 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4172 arithmetic in general, is now much more reliable on the PPC
4174 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4175 platform now returns the right answer.
4176 * optimization: restored some effective method precomputation in
4177 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4178 precomputation is now tunable.
4179 * optimization: compiler-internal data structure use has been
4180 reviewed, and changes have been made that should improve the
4181 performance of the compiler by about 20%.
4182 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4183 simple-base-strings and simple-bit-vectors is improved.
4184 * optimization: the optimization of 32-bit logical and arithmetic
4185 functions introduced in version 0.8.3 on the x86 has been
4186 implemented on the mips, ppc and sparc platforms; an
4187 implementation of the same facility, but for 64-bit arithmetic,
4188 has been added for the alpha.
4189 * microoptimization: the compiler is better able to make use of the
4190 x86 LEA instruction for multiplication by constants.
4191 * bug fix: in some situations compiler did not report usage of
4192 generic arithmetic in (SPEED 3) policy.
4193 * bug 145b fix: compiler used wrong type specifier while converting
4194 MEMBER-types to numeric.
4195 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4197 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4198 index argument now works properly on the Alpha platform.
4199 * bug fix: floating point exception treatment on the Alpha platform
4201 * bug fix: FILE-POSITION works much better on string input and
4202 output streams. (thanks to Nikodemus Siivola)
4203 * bug fix: many threading/garbage collection symptoms sorted.
4204 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4205 might be pseudo-atomic.
4206 * internal change: Stopping for GC is now done with signals not
4207 ptrace. GC is now done in whichever thread wanted it, instead of
4209 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4211 * bug fix: result form in DO is not contained in the implicit
4213 * incompatible change: ICR structure is changed; the value part of
4214 CONTINUATION is now called LVAR; corresponding functions are
4215 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4216 * added type deriver for ISQRT (thanks to Robert E. Brown).
4217 * bug fix: better support for loading from the command line when an
4218 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4220 * fixed some bugs revealed by Paul Dietz' test suite:
4221 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4222 ** ROUND and FROUND now give the right answer when given very
4223 small float arguments.
4224 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4226 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4227 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4228 ** LCM should return a non-negative integer.
4229 ** PARSE-INTEGER returned the index of a terminator instead of the
4230 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4231 ** PARSE-INTEGER returned an incorrect index being applied to a
4233 ** LCM with two arguments of 0 returns 0 rather than signalling
4235 ** unsigned addition of a 32-bit constant with the high bit set no
4236 longer causes an internal compiler error on the x86.
4237 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4238 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4239 with negative last argument.
4240 ** byte specifiers with zero size and position no longer cause
4241 an error during type derivation.
4242 ** bignum multiplication on the Alpha platform now returns the
4244 * porting: The system now builds on SuSE AMD64, although it still
4245 generates a 32-bit binary.
4246 * .fasl file incompatibility: The fasl file version number has
4247 been incremented (because of the changes to internal compiler
4248 data structures referred to above).
4250 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4251 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4252 more accurately, on the Darwin kernel running on PowerPC hardware.
4253 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4254 * Compiler code deletion notes now signal a condition of type
4255 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4256 an associated MUFFLE-WARNING restart.
4257 * The compiler now performs limited argument count validation of
4258 constant format strings in FORMAT, and where appropriate in ERROR,
4259 CERROR and WARN. (thanks to Gerd Moellmann)
4260 * New ASDF-INSTALL contrib can be used for automatic download and
4261 installation of third-party Lisp code from CCLAN or other sites
4263 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4264 which forces another thread to execute a function supplied by the
4266 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4267 now accept and act upon their :ELEMENT-TYPE keyword argument.
4268 (reported by Martin Atzmueller, Edi Weitz)
4269 * bug fix: FILE-POSITION now accepts position designators up to
4270 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4271 is the greater. (thanks to Patrik Nordebo)
4272 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4273 Kalle Olavi Niemitalo)
4274 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4275 printable. (reported by Eric Marsden)
4276 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4277 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4278 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4279 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4280 (thanks to Stig Sandoe)
4281 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4282 UNREAD-CHAR now correctly includes the unread character in the
4283 target sequence. (thanks to Gerd Moellmann)
4284 * bug fix in threaded builds: the system can now be suspended and
4285 resumed by shell job control with minimal disruption.
4286 * bug fixes in times and timezones >2038AD
4287 * better handling of "where is GNU make?" problem in build scripts
4288 (thanks to Nikodemus Siivola)
4289 * new optimization: inside a named function any reference to a
4290 function with the same name is considered to be a self-reference;
4291 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4292 optimization quality.
4293 * new optimization on x86: logical functions and + now have
4294 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4295 used when the result is truncated to 32 bits.
4296 * VALUES declaration is partially enabled.
4297 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4298 * fixed some bugs revealed by Paul Dietz' test suite:
4299 ** The system now obeys the constraint imposed by
4300 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4301 types form a lattice under type intersection.
4302 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4303 ** ASSOC now ignores NIL elements in an alist.
4304 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4305 and (1+ MOST-POSITIVE-FIXNUM) answers.
4306 ** The addition of a method with invalid qualifiers to a generic
4307 function does not cause an error to be signalled immediately;
4308 a warning is signalled, and the error is generated only on
4309 calling the generic function.
4310 * changed .fasl file version number, in part to add type codes for
4311 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4312 obscure ANSI requirements
4314 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4315 * fixed bug 148: failure to inline-expand a local function left
4316 garbage, confusing the compiler.
4317 * fixed bugs 3cd: structure slot readers perform type check if the
4318 slot can have an invalid value (i.e. it is either not initialized
4319 or can be written with a less specific slot writer).
4320 * bug fix: the compiler now traps array references to elements off
4321 the end of an array; previously, the bounds checking in some
4322 circumstances could go off-by-one.
4323 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4325 * type declarations for array element types now obey the description
4326 on the CLHS page "Declaration TYPE", as per discussions on
4327 sbcl-help around 2003-05-08. This means that a declaration
4328 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4329 declaration, all references to BAR will be asserted or assumed
4330 (with THE, so dependent on compiler policy) to involve objects of
4331 type FOO. Note that no such declaration is implied in
4332 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4333 * declared types of functions from the "Conditions"
4334 chapter. (reported by Paul Dietz)
4335 * bug fix: CERROR accepts a function as its first argument.
4336 * bug fix: NTH an NTHCDR accept a bignum as index
4337 arguments. (reported by Adam Warner)
4338 * optimization: character compare routines now optimize comparing
4339 against a constant character. (reported by Gilbert Baumann)
4340 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4341 argument now works properly on the MIPS platform.
4342 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4343 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4344 declared to have a functional type, does not cause an error
4346 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4347 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4348 * fixed bug: if last continuation of a deleted block has a
4349 destination, this destination should be deleted too. (reported by
4351 * fixed a bug in the bootstrap process: the host compiler's values
4352 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4353 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4354 test case from Patrik Nordebo)
4355 * improved the ability of the disassembler on the PPC platform to
4356 provide helpful disassembly notes.
4357 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4358 the class in more cases than previously.
4359 * bug fix: FILE-POSITION now understands :START and :END for
4360 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4361 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4362 8) data. (thanks to David Lichteblau)
4363 * bug fix: it is possible to add a method to a generic function
4364 without lambda list.
4365 * bug fix: reader failed to signal END-OF-FILE inside an
4366 object representation. (reported by Nikodemus Siivola)
4367 * fixed some bugs revealed by Paul Dietz' test suite:
4368 ** LAST and [N]BUTLAST should accept a bignum.
4369 ** condition slot accessors are methods.
4370 ** (VECTOR NIL) is a subtype of STRING.
4372 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4373 * minor incompatible change: some nonsensical specialized lambda
4374 lists (used in DEFMETHOD) which were previously ignored now signal
4376 * minor incompatible change: the system is now aware of the types of
4377 variables in the COMMON-LISP package, and will signal errors for
4378 most violations of these type constraints (where previously they
4379 were silently accepted).
4380 * minor incompatible change: COMPILE-FILE now uses the freedom
4381 afforded (ANSI 3.2.2.3) to use derived function types for
4382 functions defined in the same file. This also permits the system
4383 to warn on static type mismatches and function
4384 redefinition. (Currently it does not work with high DEBUG level.)
4385 * minor incompatible change: VALUES declaration is disabled.
4386 * When issuing notes, the compiler now signals a condition of type
4387 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4388 restart for use in user handlers. It is expected that the
4389 COMPILER-NOTE condition will eventually become a condition
4390 supertype to a hierarchy of note types, which will then be
4391 handleable in a similar fashion. However, at the moment, no such
4392 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4393 but it's an implementation detail, not a classification for the
4395 * Changes in type checking closed the following bugs:
4396 ** type checking of unused values (192b, 194d, 203);
4397 ** template selection based on unsafe type assertions (192c, 236);
4398 ** type checking in branches (194bc).
4399 * A short form of VALUES type specifier has ANSI meaning (it has
4400 increased the number of situations when SBCL cannot perform type
4402 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4403 keywords or constants is permissible.
4404 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4405 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4406 classes. (thanks to Antonio Martinez)
4407 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4408 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4409 argument to a pretty-print stream. Instead, it leaves any such
4410 operations to DESCRIBE-OBJECT methods.
4411 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4413 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4414 lambda lists. (thanks to David Lichteblau)
4415 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4416 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4417 (thanks to Gerd Moellmann)
4418 * fixed bug 246: increased compilation speed of long
4419 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4421 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4423 * DEFCONSTANT now throws a condition of type
4424 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4425 constant to a non-EQL value; CONTINUE and ABORT restarts
4426 respectively change and preserve the value.
4427 * fixed bug 63: The code walker, part of the implementation of CLOS,
4428 is now better at handling symbol macros.
4429 * bug fix: There is no longer an internal implementation type named
4430 CL:LENGTH. (reported by Raymond Toy)
4431 * bug fix: In macro-like defining macros/special operators the
4432 implicit block does not enclose the lambda list.
4433 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4434 enclosed in parentheses) are not suitable as type specifiers, and
4435 their use properly signals an error now.
4436 * bug fix: An argument count mismatch for a type specifier in code
4437 being compiled no longer causes an unhandled error at compile
4438 time, but signals a compile-time warning.
4439 * fixed simple vector readable printing
4440 * bug fix: DESCRIBE takes more care over whether the class
4441 precedence list slot of a class is bound before accessing it.
4442 (reported by Markus Krummenacker)
4443 * bug fix: FORMATTER can successfully compile pretty-printer format
4444 strings which use variants of the ~* directive inside.
4445 * bug fix: SEARCH now applies its TEST predicate to the elements of
4446 the arguments in the correct order. (thanks to Wolfhard Buss)
4447 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4448 in type inference. (thanks to Robert E. Brown)
4449 * bug fix: Reading in symbols with an explicit package name of ""
4450 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4451 * fixed some bugs revealed by Paul Dietz' test suite:
4452 ** NIL is now allowed as a structure slot name.
4453 ** Arbitrary numbers, not just REALs, are allowed in certain
4454 circumstances in LOOP for-as-arithmetic clauses.
4455 ** Multiple class redefinitions before slot access no longer
4456 causes a type error.
4457 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4458 association between the name and a class.
4459 ** Generic functions with non-standard method-combination and over
4460 five methods all of which return constants no longer return NIL
4461 after the first few invocations. (thanks to Gerd Moellmann)
4462 ** CALL-NEXT-METHOD with no arguments now passes the original
4463 values of the arguments, even in the presence of assignment.
4464 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4466 ** DISASSEMBLE works with closures and funcallable instances.
4467 ** ADD-METHOD now returns the generic function, not the new method.
4468 ** FIND-METHOD signals an error if the lengths of the specializers
4469 is incompatible with the generic function, even if the ERRORP
4471 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4472 which its argument is a member.
4473 ** DEFCLASS only redefines the class named by its class-name
4474 argument if that name is the proper name of the class;
4475 otherwise, it creates a new class.
4476 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4477 of the UNBOUND-SLOT condition to the name of the slot.
4478 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4479 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4480 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4481 SLOT-MAKUNBOUND in the specified fashion.
4483 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4484 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4485 cross-compilation host. As a consequence, we can now bootstrap our
4486 way up to SBCL starting with a bare gcc toolchain and human-readable
4487 source code (first the source to CLISP, then the source to SBCL).
4488 * A contributed module containing a partial implementation of the
4489 simple-streams interface has been included. (thanks to Rudi
4491 * A contributed module implementing the RFC1321 Message Digest
4492 Algorithm, known as MD5, has been included.
4493 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4494 no longer has any effect, as the code controlled by this feature
4495 has been deleted. (As far as we know, no-one has ever built using
4496 this feature, and its semantics were confused in any case).
4497 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4498 work on conditions (as required by the ANSI specification),
4499 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4500 expected behaviour on conditions. Users should note, however,
4501 that such behaviour is not required by the ANSI specification,
4502 and so use of this behaviour may render their code unportable.
4503 * fixed some bugs revealed by Paul Dietz' test suite:
4504 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4506 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4507 ** SXHASH on condition objects no longer returns NIL.
4508 ** :ALLOCATION :CLASS slots are better treated; their values are
4509 updated on class redefinition, and initforms inherited from
4510 superclasses are applied.
4511 ** REMOVE-METHOD returns its generic function argument even when
4512 no method was removed.
4513 ** SHARED-INITIALIZE now initializes the values of the requested
4514 slots, including those with :ALLOCATION :CLASS.
4515 ** ALLOCATE-INSTANCE now works on structure classes defined via
4516 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4518 ** SLOT-EXISTS-P now works on conditions, as well as structures
4520 ** MAKE-LOAD-FORM now has the required methods on
4521 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4522 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4523 keyword, and now implements the SLOT-NAMES argument.
4524 ** methods with &OPTIONAL arguments no longer allow too many
4525 arguments to be passed in the call without error.
4526 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4527 option is consistent with the required arguments of the generic
4528 function lambda list.
4529 * bug fix: REQUIRE accepts a string designator. (Thanks to
4531 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4532 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4533 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4534 * bug fix: The compiler now checks for duplicated variables in macro
4536 * bug fix: SETQ on globals returns the correct value.
4537 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4538 not a COMPILER-ERROR (followed by some other strange error on
4539 choosing the CONTINUE restart).
4540 * bug fix: make.sh and friends are now more consistent in the way that
4541 they look for GNU "make".
4543 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4544 * experimental native threads support (on x86 Linux >=2.4 only).
4545 This is not compiled in by default: you need to add :SB-THREAD to
4546 the target features. See the "Beyond ANSI" chapter of the manual
4548 * fix for longstanding nonANSIism: The old distinction between
4549 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4550 The return value from CL:FIND-CLASS is now a CLOS class, and
4551 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4552 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4553 * An interface to the MetaObject Protocol, as described in Kiczales,
4554 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4555 MIT Press, 1991, is available from the SB-MOP package.
4556 * incompatible change: the SB-PCL package should now be considered
4557 a private implementation detail, and no longer a semi-private MOP
4559 * minor incompatible change: due to rearrangement for threads, the
4560 control stack and binding stack are now allocated at arbitrary
4561 addresses instead of being hardcoded per-port. Users affected by
4562 this probably have to be doing advanced things with shared
4563 libraries, and will know who they are.
4564 * minor incompatible change: Previously, all --eval forms used were
4565 processed with READ before any of them were processed with EVAL.
4566 Now each --eval form is processed with both READ and EVAL before
4567 the next --eval form is processed. (Thus package operations like
4568 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4569 work as the user might reasonably expect.)
4570 * minor incompatible change: *STANDARD-INPUT* is now only an
4571 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4573 * minor incompatible change: Y-OR-N-P is now character-oriented,
4574 not line oriented. Also, YES-OR-NO-P now works without errors.
4575 (thanks to Antonio Martinez)
4576 * sb-aclrepl module improvements: an integrated inspector, added
4577 repl features, and a bug fix to :trace command.
4578 * Known functions, which cannot be open coded by the backend, are
4579 considered to be able to check types of their arguments. (fixing
4580 a bug report by Nathan J. Froyd)
4581 * fixed a bug in computing method discriminating functions: It is
4582 now possible to define methods specialized on classes which have
4583 forward-referenced superclasses. (thanks to Gerd Moellmann)
4584 * fixed evaluation order in optional entries (reported by Gilbert
4586 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4587 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4588 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4589 required-by-AMOP NAME argument, as well as CLASS and
4590 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4591 * fixed bug 20: DEFMETHOD can define methods using names that are
4592 not the proper names of classes to designate class specializers.
4593 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4594 Unix file descriptors, instead of blowing up. (thanks to Antonio
4596 * Garbage collection refactoring: user-visible change is that a
4597 call to the GC function during WITHOUT-GCING will not do garbage
4598 collection until the end of the WITHOUT-GCING. If you were doing
4599 this you were probably losing anyway.
4600 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4601 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4602 TYPEP the latter but not the former.
4603 * The compiler issues a full WARNING for calls to undefined functions
4604 with names from the CL package.
4605 * MAP-INTO for a vector destination is open coded. (reported by
4606 Brian Downing on c.l.l)
4607 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4608 documentation string.
4609 * fixed some bugs revealed by Paul Dietz' test suite:
4610 ** COPY-ALIST now signals an error if its argument is a dotted
4612 ** Condition slots are now accessed more correctly in the presence
4613 of multiple initargs for a given slot.
4614 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4615 exclude restarts of the same name associated with a different
4617 ** DEFCLASS of forward-referenced classes with another
4618 forward-referenced class in the superclasses list no longer
4620 ** Condition slots are now initialized once each, not multiple
4621 times. (thanks to Gerd Moellmann)
4622 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4624 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4625 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4626 arguments contain duplicated elements.
4627 ** RESTART-CASE understands local macros.
4628 ** RESTART-CASE associates exactly its own restarts with a condition.
4629 ** ENDP in safe mode checks its argument to be of type LIST.
4630 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4631 in question is unbound.
4632 ** Optimized MAKE-INSTANCE functions no longer cause internal
4633 assertion failures in the presence of duplicate initargs.
4634 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4635 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4636 propagated even in the ctor optimized implementation of
4638 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4640 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4641 * a better implementation of SXHASH on (simple) bit vectors,
4642 measured both in execution speed and in distribution of results
4643 over the positive fixnums, has been installed. Likewise, a better
4644 implementation of EQUAL for simple bit vectors is now available.
4645 * fixed CEILING optimization for a divisor of form 2^k.
4646 * fixed bug 240 (emitting extra style warnings "using the lexical
4647 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4648 by Antonio Martinez)
4649 * fixed SXHASH, giving different results for NIL depending on type
4650 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4651 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4652 variable. (found by Rolf Wester)
4653 * SBCL does not ignore type declarations for special
4654 variables. (reported by rif on c.l.l 2003-03-05)
4655 * some bug fixes in contrib/sb-aclrepl/
4656 * fixed some bugs revealed by Paul Dietz' test suite:
4657 ** a bug in the CONS type specifier, whereby the CAR and CDR
4658 types got intertwined, has been fixed;
4659 ** the type system is now able to reason about the interaction
4660 between INTEGER and RATIO types more completely;
4661 ** APPEND, [N]REVERSE and NRECONC check that those their
4662 arguments, which must be proper lists, are really so;
4663 ** An array specialized to be unable to hold elements has been
4664 implemented, as required -- yes, really -- by ANSI;
4665 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4666 on malformed property lists;
4668 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4669 * incompatible packaging change: in line with Unix convention,
4670 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4671 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4672 * REQUIRE and PROVIDE are now optionally capable of doing something
4673 useful. See the documentation string for REQUIRE.
4674 * infrastructure for a managed SBCL contrib system: contributed
4675 modules in this release include:
4676 ** the ASDF system definition facility;
4677 ** an interface to the BSD Sockets API;
4678 ** an ACL-like convenience interface to the repl;
4679 (thanks to Kevin Rosenberg)
4680 ** an implementation of ROTATE-BYTE, with efficient implementation
4682 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4683 gives a closer approximation to the right answer than previously.
4684 (thanks to Raymond Toy)
4685 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4686 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4687 optional environment arguments, as required by ANSI.
4688 * fixed bugs in other functions taking environment objects, allowing
4689 calls with an explicit NIL environment argument to be compiled
4691 * fixed bug 228: primary return values from
4692 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4693 COMPILE or FUNCTION.
4694 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4695 :TYPE will no longer signal errors on innocuous objects.
4696 * fixed bug 231b: SETQ is better at respecting type declarations in
4697 the lexical environment.
4698 * fixed a bug in DEFCLASS: classes named by symbols with no or
4699 unprintable packages can now be defined.
4700 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4701 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4702 * fixed compiler failure related to checking types of functions.
4703 (reported by Robert E. Brown)
4704 * the compiler is now much more consistent in its error-checking
4705 treatment of bounding index arguments to sequence functions: in
4706 (SAFETY 3) code, errors will be signalled in almost all cases if
4707 invalid sequence bounding indices are passed to functions defined
4708 by ANSI to operate on sequences.
4709 * fixed a bug in the build procedure: documentation of SBCL-specific
4710 packages is now preserved and available in the final Lisp image.
4711 * lifted FDEFINITION lookup out of loops in the implementation of
4712 many list operations. (thanks to Robert E. Brown)
4713 * fixed a bug in the reader: the #n# reader macro now works for
4714 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4715 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4716 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4717 E. Brown and Tony Martinez respectively)
4718 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4719 SLOT-BOUNDP: in particular, it is now able to optimize them much
4720 better, and is now not vulnerable to having packages renamed.
4721 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4722 always called when a slot is not present in an instance. (thanks
4724 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4725 longer signal an error on unreading a character following EOF on
4726 the previous constituent stream. (thanks to Tony Martinez)
4727 * fixed some bugs revealed by Paul Dietz' test suite:
4728 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4729 not just nonnegative fixnums;
4730 ** the logical bit-array operators such as BIT-AND now accept an
4731 explicit NIL for their "opt-arg" argument (to indicate a
4732 freshly-consed result bit-array);
4733 ** ELT now signals an error on an invalid sequence index in safe
4735 ** the type system is now cleverer about negations of numeric
4736 types, and consequently understands the BIGNUM and RATIO types
4738 ** the type system is now cleverer about the interaction between
4739 INTEGER and RATIO types: while bugs still remain, many more
4740 cases are accurately computed;
4741 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4742 if it is in the last clause;
4743 ** CONSTANTLY now correctly returns a side-effect-free function in
4745 ** DECLARE is no longer treated as a special-operator; in
4746 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4747 * incremented fasl file version number due to the change in the
4748 DEFSTRUCT-SLOT-DESCRIPTION structure.
4750 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4751 * minor incompatible change: code processed by the "interpreter" or
4752 EVAL now has a compilation optimization policy of (DEBUG 2)
4753 (changed from (DEBUG 1)) to improve debuggability of interactive
4754 development, and to allow the use of the debug RETURN command in
4756 * an experimental implementation of the RETURN command for the
4757 debugger has been included. (thanks to Frederik Kuivinen)
4758 * fixed bug 62: constraints were not propagated into a loop.
4759 * fixed bug in embedded calls of SORT (reported and investigated by
4761 * fixed some bugs revealed by Paul Dietz' test suite:
4762 ** printing and reading of arrays with some dimensions having
4763 length 0 (thanks to Gerd Moellmann);
4764 ** BOA constructor with &AUX argument without a default value does
4765 not cause a type error;
4766 ** CONSTANTP now returns true for all self-evaluating objects.
4768 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4769 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4770 accessors that are related by inheritance, as specified in the
4771 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4772 Valtteri Vuorikoski)
4773 * The compiler is now able to inline functions that were defined in
4774 a complex lexical environment (e.g. inside a MACROLET).
4775 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4777 * Support for the upcoming FreeBSD-5.0 release has been included.
4778 (thanks to Dag-Erling Smorgrav)
4779 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4780 effect when it is not in a toplevel context.
4781 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4782 stand a better chance of being correct. (thanks to Gerd
4784 * fixed bug in COERCE, which now signals an error on coercing a
4785 rational to a bounded real type which excludes the expected
4787 * The compiler is now able to derive types more accurately from the
4788 COERCE and COMPILE functions.
4789 * fixed bug 223: functional binding is considered to be constant
4790 only for symbols in the CL package.
4791 * fixed bug 231: SETQ did not check the type of a variable being set
4792 (reported by Robert E. Brown)
4793 * A new optimization for MAKE-INSTANCE has been included, fixing
4794 various bugs (including relating to :ALLOCATION :CLASS slots and
4795 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4797 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4798 ** As required by ANSI, LOOP now disallows anonymous collection
4799 clauses such as COLLECT I in conjunction with aggregate boolean
4800 clauses such as THEREIS (= I 1);
4801 ** LOOP now signals an error when any variable is reused in the
4802 same loop (including the potentially useful construct analogous
4803 to WITH A = 1 WITH A = (1+ A);
4804 ** IT is only a special loop symbol within the first clause of a
4805 conditional loop clause;
4806 ** LOOP with a typed iteration variable over a hashtable now
4807 signals a type error iff it should.
4808 * fixed some other bugs revealed by Paul Dietz' test suite:
4809 ** FILE-STREAM now names the class previously known as FD-STREAM;
4810 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4811 argument) no longer signals an error;
4812 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4813 of the slot symbol, rather than using the current package
4814 ((:CONC-NAME "") continues to intern the slot's name in the
4816 * incremented fasl file version number, because of the incompatible
4817 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4818 of the new implementation of DEFINE-COMPILER-MACRO.
4820 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4821 * Support for building SBCL for MIPS platforms running in
4822 little-endian mode has now been checked in, and basic
4823 functionality on said platforms verified.
4824 * minor incompatible change: PCL now records the pathname of a file
4825 in which methods and the like are defined, rather than its
4827 * minor incompatible change: TRUENAME now considers the truename of
4828 a file naming a directory to be the pathname with :DIRECTORY
4829 component indicating that directory.
4830 * minor incompatible change: a NAMED clause in the extended form of
4831 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4832 reason for the previous behaviour is unclear.
4833 * more systematization and improvement of CLOS and MOP conformance
4834 in PCL (thanks to Gerd Moellman and Pierre Mai):
4835 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4837 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4838 primary methods with no specializers;
4839 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4841 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4842 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4843 FORWARD-REFERENCED-CLASSes; error reporting on
4844 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4846 ** SXHASH on CLOS instances now uses a slot internal to the
4847 instance to return different numbers on distinct instances,
4848 while preserving the same return value through invocations of
4850 ** DEFMETHOD signals errors when methods with longer incongruent
4851 lambda lists are added to generic functions;
4852 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4853 CLASS, as specified in AMOP;
4854 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4855 on the order returned by the primary method for classes of
4856 class STANDARD-CLASS;
4857 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4858 * fixed some bugs shown by Paul Dietz' test suite:
4859 ** DOLIST puts its body in TAGBODY;
4860 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4862 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4863 value producing form;
4864 ** if more variables are given to PROGV than values, extra
4865 variables are bound and made to have no value;
4866 ** NSUBSTITUTE on list arguments gets the right answer with
4868 ** ELT signals an error of type TYPE-ERROR when the index argument
4869 is not a valid sequence index;
4870 ** LOOP signals (at macroexpansion time) an error of type
4871 PROGRAM-ERROR when duplicate variable names are found;
4872 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4873 ** FUNCALL of special-operators now cause an error of type
4875 ** PSETQ now works as required in the presence of side-effecting
4876 symbol-macro places;
4877 ** NCONC accepts any object as its last argument;
4878 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4880 ** loop-for-as-package does not require a package to be explicitely
4882 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4884 * fixed bug 166: compiler preserves "there is a way to go"
4885 invariant when deleting code.
4886 * fixed bug 172: macro lambda lists with required arguments after
4887 &REST arguments now cause an error to be signalled. (thanks to
4889 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4890 bug. (thanks to Matthew Danish)
4891 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4893 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4894 arguments are lexically rebound. (thanks to Gerd Moellmann and
4896 * fixed bug 194: error messages are now more informative when there
4897 is no primary method applicable in a call to a generic
4898 function. (thanks to Gerd Moellmann)
4899 * fixed bug in command line argument checking (thanks to Julian
4901 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4902 (thanks to Matthew Danish)
4903 * incremented fasl file version number, because of the
4904 SXHASH-related changes in the layout of CLOS data structures
4906 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4907 * minor incompatible change: The runtime (the Unix executable named
4908 "sbcl") is now much pickier about the .core files it will load.
4909 Essentially it now requires .core files to descend from the same
4910 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4911 as the runtime does. (The intent is to prevent the crashes which
4912 can occur, and which can even be reported as mysterious failures,
4913 when people patch the sources or change the build parameters
4914 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4915 sbcl and .core files.)
4916 * fixed bug: VALUES-LIST is no longer optimized away.
4917 * fixed bug 142: The FFI conversion of C string values to Lisp
4918 string values no longer conses excessively. (thanks to Nathan
4919 Froyd porting Raymond Toy's fix to CMU CL)
4920 * began to systematize and improve MOP conformance in PCL (thanks to
4921 Nathan Froyd, Gerd Moellman and Pierre Mai):
4922 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4924 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4925 ** FINALIZE-INHERITANCE is now called on class finalization;
4926 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4927 argument precedence order.
4928 * fixed bug 202: The compiler no longer fails on functions whose
4929 derived types contradict their declared type.
4930 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4931 so it can be non-toplevel.
4932 * The fasl file version number has changed (because of the new
4933 implementation of DEFMACRO).
4934 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4935 safe code, that any length requirement by their type-specifier
4936 argument is valid. The exceptions to this are described in bug
4938 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4939 functions now check the types of their inputs as required by ANSI.
4940 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4941 introduced symbol is DECLAREd to be SPECIAL.
4942 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4943 * fixed bug: :COUNT argument to sequence functions may be negative
4944 * fixed bug: body of DO-SYMBOLS may contain declarations
4945 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4946 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4947 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4948 symbol macro only once
4949 * fixed printing of call frame when argument list is unavailable
4950 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4951 * compiler no longer signals WARNING on unknown keyword
4954 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4955 * A beta-quality port to the mips architecture running Linux,
4956 based on the old CMUCL backend, has been made. It has been tested
4957 on a big-endian kernel, and works sufficiently well to be able to
4958 rebuild itself; it has not been tested in little-endian mode.
4959 * fixed an inconsistency between gencgc.c and purify.c which made
4960 dumping/loading .core files unreliable
4961 * fixed bug 120a: The compiler now deals correctly with IFs where
4962 the consequent is the same as the alternative, instead of
4963 misderiving the return type. (thanks to Alexey Dejneka)
4964 * fixed bug 113: Logical pathnames are now dumpable (the logical
4965 host is resolved at load-time, throwing an error if it is not
4967 * fixed bug 174: FORMAT's error message is slightly clearer when a
4968 non-printing character is used in a format directive.
4969 * fixed several bugs in compiler checking of type declarations, i.e.
4970 violations of the Python "declarations are assertions" principle
4971 (thanks to Alexey Dejneka)
4972 * fixed several bugs in PCL's error checking (thanks to Gerd
4974 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4976 * fixed bug in compilation of functions as first class values
4977 (thanks to Antonio Martinez-Shotton)
4978 * The compiler's handling TYPE-ERRORs which it can prove will
4979 inevitably happen at runtime has been cleaned up and corrected
4980 in several ways. (thanks to Alexey Dejneka)
4981 * improved argument type checking for various basic arithmetic
4982 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4983 lavished on them in the past that they can be compiled in many
4984 ways in different special cases
4985 * fixed bug 181: compiler checks validity of user supplied type
4987 * cleaned up code flushing in optimization: Function calls which
4988 should signal errors for safety purposes (e.g. which ANSI says
4989 should signal errors when their arguments are of incorrect type)
4990 are no longer optimized away.
4991 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4992 * incremented fasl file version number, because changes in the
4993 implementation of sequence functions like COERCE caused
4994 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4995 in old inline expansions) to become undefined. (Actually these
4996 changes were later undone, so we might very well be binary
4997 compatible with 0.7.7 after all, but leaving the version number
4998 incremented seemed like the simplest and most conservative
5001 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5002 * An alpha-quality port to the parisc architecture running Linux,
5003 based on the old CMUCL backend, has been made. This, even more so
5004 than the other backends, should be considered still a work in
5005 progress; known problems include that the Linux kernel in 64-bit
5006 mode does not propagate the correct sigcontext structure to
5007 userspace, and consequently SBCL on a parisc64 kernel will not
5009 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5010 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5011 suppressed.) Also now that the compiler is looking at declarations
5012 in the environment, it checks optimization declarations as well,
5013 and suppresses inlining when (> DEBUG SPEED).
5014 * More fixes have been made to treatment of floating point exception
5015 treatment and other Unix signals. In particular, floating point
5016 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5017 * The detection and handling of control stack exhaustion (infinite
5018 or very deeply nested recursion) has changed. Stack exhaustion
5019 detection is now done by write-protecting pages at the OS level
5020 and applies at all optimization settings; when found, a
5021 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5022 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5023 be caught using IGNORE-ERRORS.
5024 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5025 correctly when transforming recursive LABELS functions to LETs.
5026 (thanks to Alexey Dejneka)
5027 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5028 that are names of constants or global variables.
5029 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5030 alien routines with docstrings.
5031 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5032 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5034 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5035 (thanks to Eric Marsden)
5036 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5037 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5038 * Bug fix: The SPARC backend can now compile functions involving
5039 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5040 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5041 to a functions expecting a PATHNAME-DESIGNATOR.
5042 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5043 lambda lists. (thanks to Alexey Dejneka)
5044 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5045 functions so that EXPORTing the name of the class doesn't cause
5046 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5047 to Antonio Martinez for reporting this)
5048 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5049 constant-folded without failing an assertion. (thanks to Einar
5050 Floystad Dorum for reporting this)
5051 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5052 types are now dealt with more correctly by the compiler.
5053 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5054 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5055 behaviour analogous to RENAME-FILE. This puts its behaviour more
5056 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5058 * The fasl file version number has changed again. (because of the
5059 bug fix involving the names of PCL MAKE-INSTANCE functions)
5061 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5062 * bug fix: Floating point exceptions are treated much more
5063 consistently on the x86/Linux and PPC/Linux platforms.
5064 * Array initialization with :INITIAL-ELEMENT is now much faster for
5065 cases when the compiler cannot open code the array creation, but
5066 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5067 array accesses have also seen a speed increase.
5068 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5069 specified. (This was at the root of some bad interactions between
5070 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5072 * bug fix: Internal error arguments for undefined functions are now
5073 computed correctly on the PPC/Linux platform.
5074 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5075 Raymond Toy's patch for CMU CL)
5076 * Support for the Solaris 9 operating environment has been included
5077 (thanks to Daniel Merritt)
5078 * A very ugly but hopefully complete draft of the missing FFI chapter
5079 of the manual has been created by reformatting the corresponding
5080 CMU CL manual chapter into (currently very ugly and incoherent)
5081 DocBook and bringing it up to date for SBCL behavior. Thus, the
5082 manual is now essentially complete, at least by my extreme
5083 once-and-only-once standards, whereby it's acceptable to refer to
5084 the doc strings of SB-EXT functions as the primary documentation.
5085 * The fasl file version number has changed again, due to cleanup of
5086 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5087 is no longer a static symbol.)
5089 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5090 * SBCL now builds with OpenMCL (version 0.12) as the
5091 cross-compilation host; also, more progress has been made toward
5092 bootstrapping under CLISP.
5093 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5095 * bug 158 fixed: The compiler can now deal with integer loop
5096 increments different from 1; fixing this turned out also to fix
5098 * bug 169 fixed: no more bogus warnings about using lexical bindings
5099 despite the presence of perfectly good SPECIAL declarations (thanks
5100 to David Lichteblau)
5101 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5102 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5103 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5105 * bug 180 fixed: Method combination specifications no longer ignore
5106 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5107 * bug fix: Structure type predicate functions now check their argument
5108 count as they should.
5109 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5110 correctly. (thanks to Pierre Mai)
5111 * minor incompatible change: The --noprogrammer option is deprecated
5112 in favor of the new --disable-debugger option, which is very similar.
5113 (The major difference is that it takes effect at a slightly different
5114 time at startup, causing handling of errors in --sysinit and
5115 --userinit files will be affected differently.) The
5116 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5117 been added to allow this functionality to be controlled from ordinary
5118 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5119 maintainers, who might want to run non-interactive scripts to
5120 build SBCL cores which will later be used interactively.)
5121 * minor incompatible change: The LOAD function no longer, when given
5122 a wild pathname to load, loads all files matching that pathname.
5123 Instead, an error of type FILE-ERROR is signalled.
5125 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5126 * bug 147 fixed: The compiler preserves its block link/count
5127 invariants more correctly now so that it doesn't crash. (thanks
5129 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5131 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5132 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5133 no-value-for-this-character as NIL (as specified by ANSI).
5134 * HOST-NAMESTRING on physical pathnames now returns a string that is
5135 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5136 (thanks to Christophe Rhodes)
5137 * The Alpha port handles icache flushing more correctly. (thanks to
5139 * More progress has been made toward bootstrapping under CLISP. (thanks
5140 to Christophe Rhodes)
5141 * The fasl file format has changed again, because dynamic loading
5142 on OpenBSD (which has non-ELF object files) motivated some cleanups
5143 in the way that foreign symbols are transformed and passed around.
5144 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5145 is no longer treated as whitespace by the reader, but instead as
5146 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5147 |A
\7fB|, instead of A as it used to.
5149 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5150 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5151 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5152 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5153 this as of 0.7.1.45, but was left out of the previous news section
5154 (thanks to Dan Barlow)
5155 * SBCL now runs on the Solaris operating system on SPARC architectures
5156 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5157 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5158 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5159 * SPARC backend cleanups, allowing builds of cores optimized for V8
5160 and V9 SPARCS, and also emission of code targeted to a particular
5161 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5163 * SBCL is closer to bootstrapping under CLISP, thanks to various
5164 fixes by Christophe Rhodes.
5165 * The fasl file format has changed again, to allow the compiler's
5166 INFO database to support symbol macros.
5167 * The user manual (in doc/) is formatted into HTML more nicely.
5168 (thanks to coreythomas)
5169 * The system is smarter about SUBTYPEP relationships, especially
5170 those involving NOT types (including types such as ATOM which are
5171 represented internally using NOT types). Thus SUBTYPEP is less
5172 likely to return (VALUES NIL NIL) in general, and in particular
5173 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5175 * The fasl file format has changed again, because the internal
5176 representation of types now includes a new slot to support the new
5177 SUBTYPEP-of-NOT-types logic.
5178 * (not a change in the main branch of SBCL, but a related prototype
5179 which can hopefully be merged into the main branch of SBCL in the
5180 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5181 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5182 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5183 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5184 dispatch macro character combinations. (thanks to Alexey Dejneka)
5185 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5186 that superficially look like logical namestrings correctly.
5187 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5189 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5190 default supplied-p) for &optional and &key arguments. (thanks to
5193 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5194 * incompatible change: The compiler is now less aggressive about
5195 tail call optimization, doing it only when (> SPACE DEBUG) or
5196 (> SPEED DEBUG). (This is an incompatible change because there are
5197 programs which relied on the old CMU-CL-style behavior to optimize
5198 away their unbounded recursion which will now die of stack overflow.)
5199 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5200 for non-GENCGC systems has been increased to 20M (since that
5201 seems much closer to the likely performance optimum for modern
5202 systems than the old 4M value was)
5203 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5204 and *DEBUG-PRINT-LEVEL*
5205 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5206 of CMU CL's support for SPARC, and various endianness and other
5207 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5208 * new syntactic sugar for the Unix command line: --load foo.bar is now
5209 an alternate notation for --eval '(load "foo.bar")'.
5211 ** The system now detects stack overflow and handles it gracefully,
5212 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5213 optimization settings. (This is a good thing in general, and
5214 its introduction in this version should be particularly timely
5215 for anyone whose code fails because of suppression of tail
5217 ** The system now hunts for the C variable "environ" in a more
5218 devious way, to avoid segfaults when the C library version differs
5219 between compile time and run time. (thanks to Christophe Rhodes)
5220 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5221 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5222 ** The compiler no longer issues bogus style warnings for undefined
5223 classes in the same source file as the DEFCLASSes which defined
5224 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5226 ** fixes in CONDITION class precedence list for undefined function
5227 errors (thanks to Alexei Dejneka)
5228 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5229 correctly. (thanks to Dan Barlow)
5230 ** portability fixes aiming at bootstrapping under CLISP (thanks
5231 to Dave McDonald and Christophe Rhodes)
5232 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5233 ** fixes in type translation and and type inference (thanks to
5235 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5236 ** various fixes in the new ports (thanks to Dan Barlow)
5237 * several changes related to debugging:
5238 ** suppression of tail recursion, as noted above
5239 ** stack overflow detection, as noted above
5240 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5241 is now the default. (For some time encapsulation has been more
5242 reliable than the breakpoint-based :ENCAPSULATE NIL
5243 implementation, at least on X86 systems; and I just noticed that
5244 encapsulation also seems closer to the spirit of the ANSI
5247 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5249 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5250 up properly again. (There was a packaging bug in 0.7.0 which
5251 left their definitions in SB-SYS::LOAD-FOREIGN and
5252 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5253 vital for most things which interface to C-level interfaces,
5254 like extensions working with sockets or databases or
5255 Perl-compatible regexes or whatever, and the need to fix
5256 this bug is the main reason that 0.7.1 was released so
5258 ** DEFGENERIC is now choosier about the methods it redefines, so that
5259 reLOADing a previously-LOADed file containing DEFGENERICs does
5260 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5261 cycle now works as it should. (thanks to Alexey Dejneka)
5262 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5263 fixed by Christophe Rhodes. (He actually submitted this patch
5264 months ago, and I delayed until after 0.7.0.)
5265 ** Bug 111 (internal compiler confusion about runtime checks on
5266 FUNCTION types) was fixed by Alexey Dejneka.
5267 * Some internal cleanups (getting rid of variables which aren't
5268 needed now that the byte interpreter is gone) caused the fasl
5269 file format number to change again.
5271 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5272 * major incompatible change: The default fasl file extension, i.e. the
5273 default extension for files produced by COMPILE-FILE, has changed
5274 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5276 ** There are many changes in the implementation of the compiler.
5277 SBCL is now essentially a compiler-only implementation of ANSI
5278 Common Lisp. EVAL still "interprets" a few special cases, but
5279 almost all the interesting cases are handled by creating
5280 a LAMBDA expression, calling COMPILE on it, then calling
5281 FUNCALL on the result.
5282 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5283 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5284 Since the code is newer, there might still be some new bugs
5285 (though not as many as before Martin Atzmueller's fixes:-). But
5286 the new code is substantially simpler and clearer, and hopefully
5287 any remaining bugs will be simpler, less fundamental, and more
5288 fixable then the bugs in the old code.
5289 ** The revised compiler is still a little unsteady on its feet.
5291 *** The debugging information it produces (particularly the names
5292 of FUNCTION objects) is sometimes much less useful than what
5293 the old compiler produced.
5294 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5295 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5296 within a MACROLET) has been temporarily weakened.
5297 ** There are new compiler optimizations for various functions:
5298 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5299 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5300 *** the math functions TRUNCATE, FLOOR, and CEILING
5301 *** the function-of-all-trades COERCE
5302 Mostly these should be transparent, but there's one
5303 potentially-annoying problem (bug 117): when the compiler
5304 inline-expands a function and does type analysis on the result,
5305 it can create control paths which have type mismatches, and
5306 when it can't prove that those control paths aren't taken,
5307 it will issue WARNINGs about the type mismatches. This is
5308 a particular problem in practice for the new sequence functions.
5309 It's not clear how this should be fixed, and for now, a
5310 workaround is given in the entry for 117 in the BUGS file.
5311 ** (Because of the interaction between the two previous items --
5312 occasional inlining problems and new inline expansions -- some
5313 of the new sequence function optimizations won't really kick in
5314 completely until debugging information, and then inlining, are
5315 straightened out in some future version.)
5316 * minor incompatible changes:
5317 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5318 DIRECTORY no longer implicitly promotes NIL slots of its
5319 pathname argument to :WILD. In particular, when you ask for the
5320 contents of a directory (which you used to be able to do without
5321 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5322 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5323 ** changes in behavior that ANSI explicitly defines to be
5324 implementation dependent:
5325 *** The new compiler-only implementation still conforms with ANSI,
5326 but acts a little different than before. Besides the obvious
5327 changes in performance tradeoffs (that the cost per form passed
5328 to EVAL has gone up, and the cost per form executed by EVAL
5329 has gone down), the behavior of the system changes a little
5330 because there are no longer any interpreted function objects.
5331 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5332 e.g. doing COMPILE on the output of interactive DEFUN is
5334 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5336 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5337 has changed from (:CL) to NIL.
5338 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5339 e.g. #\Newline and #\Tab, don't have names specified in the
5340 ANSI Common Lisp standard, is now based on their ASCII symbolic
5341 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5342 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5343 are no longer used for output.
5344 ** changes in internal implementation constants:
5345 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5346 4 million. (If your application spends a lot of time GCing and
5347 you have a lot of RAM, you might want to experiment with
5348 increasing it even more.)
5349 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5350 However, almost all old code should still continue to work without
5351 immediate update, as SB-C-CALL is now a (deprecated) nickname
5353 ** Old operator names in the style DEF-FOO are now deprecated in
5354 favor of new corresponding names DEFINE-FOO, for consistency with
5355 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5356 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5357 internal symbols, but a few supported extensions like
5358 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5359 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5360 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5361 etc. as you get deeper into recursive calls to the debugger
5362 command loop, instead of the old "5]", "5]]", "5]]]"
5363 sequence. (I was motivated to do this when squabbles between
5364 ILISP and SBCL left me very deeply nested in the debugger. In the
5365 short term, this change will probably provoke more ILISP/SBCL
5366 squabbles, but hopefully it will be an improvement in the long run.)
5367 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5368 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5369 function, since declaiming return types involving aliens is
5370 (1) annoyingly messy to do by hand and (2) vital to efficient
5371 compilation of code which calls such functions.
5372 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5373 longer reexported by the SB-EXT package. They're solely useful
5374 for alien code, so it seems more logical that you should get
5375 them from the SB-ALIEN package, not in SB-EXT.
5376 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5377 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5378 features. Instead, the code that they used to control is always
5379 built into the system.
5380 * many other bug fixes
5381 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5382 advantage of the new EVAL-WHEN stuff and to clean them up in
5383 general, and they are now more ANSI-compliant in a number of
5384 ways. Martin Atzmueller is responsible for a lot of this.
5385 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5387 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5388 *** correct ERROR type for various file operations
5389 *** some fixes for Lisp streams
5390 *** DEFMETHOD syntax checking
5391 *** changing old weird representation of debug information as
5392 strings (which, among their other deficiencies, don't transform
5393 correctly when you rename packages, and don't change their
5394 print representation when you change things like *PACKAGE*
5395 and *PRINT-LENGTH*) to symbols and lists of symbols
5396 He also made several improvements and fixed several bugs in DESCRIBE.
5397 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5399 *** misbehavior of WRITE-STRING/WRITE-LINE
5400 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5401 and several other LOOP problems as well
5402 *** DIRECTORY when similar filenames are present
5403 *** DEFGENERIC with :METHOD options
5404 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5405 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5406 *** argument ordering in FIND with :TEST option
5407 *** mishandled package designator argument in APROPOS-LIST
5408 *** various problems in the backquote readmacro
5409 *** a bug in APROPOS
5410 *** probably some others that I'm not describing very well here,
5411 since the CVS log documents them by reference to sbcl-devel
5412 messages, and the SourceForge archives aren't working well.:-(
5413 ** Dan Barlow improved the Alpha port (and is making progress on the
5414 PPC port, for those of you who think different).
5415 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5416 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5417 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5418 continues to work on the SPARC port (for those of you in a position
5419 to look down upon our little PC-compatible boxes from a great height).
5420 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5421 and uses that copy, rather than the current dynamic value, when
5422 it's trying to decide whether to truncate output. Thus e.g.
5423 (let ((*print-lines* 50))
5424 (pprint-logical-block (stream nil)
5426 (let ((*print-lines* 8))
5427 (print (aref possiblybigthings i) stream)))))
5428 should now truncate the logical block only at 50 lines, instead of
5429 often truncating it at 8 lines, as it did before.
5430 * The doc/cmucl/ directory, containing old CMU CL documentation
5431 from the time of the fork, is no longer part of the base system.
5432 SourceForge has shut down its anonymous FTP service, and with it
5433 my original plan for distributing the old CMU CL documentation
5434 there. For now, if you need these files you can download an old
5435 SBCL source release and extract them from it.
5436 * The fasl file version number changed again, for dozens of reasons,
5437 some of which are apparent above.
5439 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5440 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5441 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5442 patch, so that DISASSEMBLE output is much nicer.
5443 * The code in the SB-PROFILE package now seems reasonably stable.
5444 I still haven't decided what the final interface should look like
5445 (I'd like PROFILE to interact cleanly with TRACE, since both
5446 facilities use function encapsulation) but if you have a need
5447 for profiling now, you can probably use it successfully with
5448 the current CMU-CL-style interface.
5449 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5450 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5451 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5452 link now returns the dangling link itself, and for similar
5453 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5454 link itself. (In these cases the old code signalled an error and
5455 looped endlessly, respectively.) Thus, DIRECTORY now works even
5456 in the presence of dangling and cyclic symbolic links.
5457 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5458 is now a supported extension again, since the consensus on
5459 sbcl-devel was that it can be useful for ordinary development
5460 work, not just for debugging SBCL itself.
5461 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5462 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5463 that currently-defined functions might be redefined later with
5464 different return types.
5465 * Hash tables can be printed readably, as inspired by CMU CL code
5466 of Eric Marsden and SBCL code of Martin Atzmueller.
5467 * better error handling in CLOS method combination, thanks to
5468 Martin Atzmueller porting Pierre Mai's CMU CL patches
5469 * more overflow fixes for >16Mbyte I/O buffers
5470 * A bug in READ has been fixed, so that now a single Ctrl-D
5471 character suffices to cause end-of-file on character streams.
5472 In particular, now you only need one Ctrl-D at the command
5473 line (not two) to exit SBCL.
5474 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5476 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5477 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5478 does the right thing.
5479 * The implementation of some type tests, especially for CONDITION
5480 types, is now tidier and maybe faster, due to CMU CL code
5481 originally by Douglas Crosher, ported by Martin Atzmueller.
5482 * Some math functions have been fixed, and there are new
5483 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5484 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5485 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5486 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5487 likely to be built into sbcl-0.7.0.)
5488 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5489 CL, ported to SBCL by Martin Atzmueller)
5490 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5491 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5492 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5493 * There's a new slam.sh hack to shorten the edit/compile/debug
5494 cycle for low-level changes to SBCL itself, and a new
5495 :SB-AFTER-XC-CORE target feature to control the generation of
5496 the after-xc.core file needed by slam.sh.
5497 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5498 COMPILE-FILE is no longer supported, so that now every function
5499 gets an entry point, so that block compilation looks a little
5500 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5501 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5502 returns the number of bytes consed since the system started,
5503 rather than the number consed since the first time the function
5504 was called. (The new definition parallels ANSI functions like
5505 CL:GET-INTERNAL-RUN-TIME.)
5506 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5507 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5508 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5509 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5510 * Fasl file version numbers are now independent of the target CPU,
5511 since historically most system changes which required version
5512 number changes have affected all CPUs equally. Similarly,
5513 the byte fasl file version is now equal to the ordinary
5516 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5517 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5518 is no longer recognized. I apologize for this, because it was
5519 listed in SB-EXT as a supported extension, but I found that
5520 its existing behavior was poorly specified, as well as incorrectly
5521 specified, and it looked like too much of a mess to straighten it
5522 out. I have enough on my hands trying to get ANSI stuff to work..
5523 * many patches ported from CMU CL by Martin Atzmueller, with
5524 half a dozen bug fixes in pretty-printing and the debugger, and
5525 half a dozen others elsewhere
5526 * fixed bug 13: Floating point infinities are now supported again.
5527 They might still be a little bit flaky, but thanks to bug reports
5528 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5529 as flaky as they were.
5530 * The --noprogrammer command line option is now supported. (Its
5531 behavior is slightly different in detail from what the old man
5532 page claimed it would do, but it's still appropriate under the
5533 same circumstances that the man page talks about.)
5534 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5535 are now supported, and enabled by default. Thus, the compiler can
5536 handle many floating point and complex operations much less
5537 inefficiently. (Thus e.g. you can implement a complex FFT
5539 * The compiler now detects type mismatches between DECLAIM FTYPE
5540 and DEFUN better, and implements CHECK-TYPE more correctly, and
5541 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5542 thanks to patches from Martin Atzmueller.
5543 * various fixes to make the cross-compiler more portable to
5544 ANSI-conforming-but-different cross-compilation hosts (notably
5545 Lispworks for Windows, following bug reports from Arthur Lemmens)
5546 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5547 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5548 fixed thanks to Pierre Mai's CMU CL patches.
5549 * fixes to keep the system from overflowing internal counters when
5550 it tries to use i/o buffers larger than 16M bytes
5551 * fixed bug 45a: Various internal functions required to support
5552 complex special functions have been merged from CMU CL sources.
5553 (When I was first setting up SBCL, I misunderstood a compile-time
5554 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5555 * improved support for type intersection and union, fixing bug 12
5556 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5557 more obscure bugs as well
5558 * some steps toward byte-compiling non-performance-critical
5559 parts of the system, courtesy of patches from Martin Atzmueller
5560 * Christophe Rhodes has made some debian packages of sbcl at
5561 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5562 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5563 stable, but are nonetheless usable. When he's ready, I'd be happy
5564 to add them to the SourceForge "File Releases" section. (And if
5565 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5566 * new fasl file format version number (because of changes in
5567 internal representation of (OR ..) types to accommodate the new
5568 support for (AND ..) types, among other things)
5570 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5571 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5573 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5575 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5576 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5577 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5578 * DESCRIBE now works on structure objects again.
5579 * Most function call argument type mismatches are now handled as
5580 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5581 know whether the function will be redefined before the call is
5582 executed. (The compiler could flag local calls with full WARNINGs,
5583 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5584 it doesn't keep track of enough information to know whether calls
5585 are local in this sense.)
5586 * Compiler output is now more verbose, with messages truncated
5587 later than before. (There should be some supported way for users
5588 to override the default verbosity, but I haven't decided how to
5589 provide it yet, so this behavior is still controlled by the internal
5590 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5591 src/compiler/ir1util.lisp.)
5592 * Fasl file format version numbers have increased again, because
5593 support for the Gray streams extension changes the layout of the
5594 system's STREAM objects.
5595 * The Gray subclassable streams extension now works, thanks to a
5596 patch from Martin Atzmueller.
5597 * The full LOAD-FOREIGN extension (not just the primitive
5598 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5599 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5600 but like most other programs, it defaults to copying the Unix
5601 environment from the original process instead of starting the
5602 new process in an empty environment.
5603 * Extensions which manipulate the Unix environment now support
5604 an :ENVIRONMENT keyword option which doesn't smash case or
5605 do other bad things. The CMU-CL-style :ENV option is retained
5606 for porting convenience.
5607 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5608 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5610 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5612 * A patch from Martin Atzmueller seems to have solved the SIGINT
5613 problem, and as far as we know, signal-handling now works cleanly.
5614 (If you find any new bugs, please report them!)
5615 * The system no longer defaults Lisp source file names to types
5616 ".l", ".cl", or ".lsp", but only to ".lisp".
5617 * The compiler no longer uses special default file extensions for
5618 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5619 seems to expect a single default extension for all compiled code,
5620 and there's no compelling reason to try to stretch the standard
5621 to allow two different extensions.) Instead, byte-compiled files
5622 default to the same extension as native-compiled files.
5623 * Fasl file format version numbers have increased again, because
5624 a rearrangement of internal implementation packages made some
5625 dumped symbols in old fasl files unreadable in new cores.
5626 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5627 many fewer weird special cases.
5628 * Bug #17 (differing COMPILE-FILE behavior between logical and
5629 physical pathnames) has been fixed, and some related misbehavior too,
5630 thanks to a patch from Martin Atzmueller.
5631 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5632 by Tim Moore, ported to SBCL by Martin Atzmueller.
5633 * Martin Atzmueller fixed several filesystem-related problems,
5634 including bug #36, in part by porting CMU CL patches, which were
5635 written in part by Paul Werkowski.
5636 * More compiler warnings in src/runtime/ are gone, thanks to
5637 more patches from Martin Atzmueller.
5638 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5641 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5643 * DESCRIBE now works on CONDITION objects.
5644 * The debugger now handles errors which arise when trying to print
5645 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5647 * The build system now uses an additional file, customize-target-features.lisp,
5648 to allow local modifications to the target *FEATURES* list. (The point of
5649 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5650 debugging features enabled, without having to worry about propagating it
5651 into everyone's system when I do a "cvs update".) When no
5652 customize-target-features.lisp file exists, the target *FEATURES* list
5653 should be constructed the same way as before.
5654 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5655 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5656 warn about behavior which is undefined under the ANSI spec. Note: This
5657 is specified by ANSI, but it's not very popular with programmers.
5658 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5659 macro in the SBCL sources for an example of a workaround which you
5660 might use to make portable ANSI-standard code which does what you want.
5661 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5662 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5663 when it's used as a non-toplevel form. (This is required in order
5664 to implement the DEFCONSTANT-EQX macro.)
5665 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5666 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5667 funny things, due to bugs in the implementation of EVAL-WHEN
5668 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5669 non-toplevel DEFCONSTANTs are uncommon.)
5670 * The core file version number and fasl file version number have been
5671 incremented, because the old noncompliant DEFCONSTANT behavior involved
5672 calling functions which no longer exist, and because I also took the
5673 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5674 * fixed bug 1 (error handling before read-eval-print loop starts), and
5675 redid debugger restarts and related debugger commands somewhat while
5677 ** The QUIT debugger command is gone, since it did something
5678 rather different than the SB-EXT:QUIT command, and since it never
5679 worked properly outside the main toplevel read/eval/print loop.
5680 Invoking the new TOPLEVEL restart provides the same functionality.
5681 ** The GO debugger command is also gone, since you can just invoke
5682 the CONTINUE restart directly instead.
5683 ** The TOP debugger command is also gone, since it's redundant with the
5684 FRAME 0 command, and since it interfered with abbreviations for the
5686 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5688 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5689 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5690 some porting work by Martin Atzmueller)
5691 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5692 with a boatload of patches which he ported to SBCL. Now that those
5694 ** The system tries to make sure that its low-priority messages
5695 are prefixed by semicolons, to help people who like to use
5696 syntax highlighting in their ILISP buffer. (This patch
5697 was originally due to Raymond Toy.)
5698 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5699 patches originally written by Raymond Toy.
5700 ** The compiler understands coercion between single-value and
5701 multiple-VALUES type expressions better, getting rid of some very
5702 weird behavior, thanks to patches originally by Robert MacLachlan
5703 and Douglas Crosher.
5704 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5705 lambda lists, thanks to a patch originally by Pierre Mai.
5706 ** The system no longer bogusly warns about "abbreviated type
5708 ** The compiler gets less confused by inlining and RETURN-FROM,
5709 thanks to some patches originally by Tim Moore.
5710 ** The system no longer hangs when dumping circular lists to fasl
5711 files, thanks to a patch originally from Douglas Crosher.
5712 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5713 undefined function error.
5714 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5715 in structure slot initforms) for now, documented workaround instead:-|
5716 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5717 * fixed bug 5: added stubs for various Gray stream functions called
5718 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5719 installed, at least appropriate type errors are generated
5720 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5721 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5722 consistently in DEFMETHOD forms.
5723 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5724 it doesn't seem to affect SBCL after all
5725 * The C runtime system now builds with better optimization and many
5726 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5728 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5730 * The system is now under CVS at SourceForge (instead of the
5731 CVS repository on my home machine).
5732 * The new signal handling code has been tweaked to treat register
5733 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5734 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5735 downstream, e.g. in debug-int.lisp, has implicit dependencies
5736 on the unsignedness of integer representation of machine words,
5737 and that caused the system to bomb out with infinite regress
5738 when trying to recover from type errors involving signed values,
5739 e.g. (BUTLAST '(1 2 3) -1).)
5740 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5741 (This was one of the bugs Peter Van Eynde reported back in July.)
5742 * The system now uses code inspired by Colin Walters' O(N)
5743 implementation of MAP (from the cmucl-imp@cons.org mailing
5744 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5745 inline the MAP operation, and there is more than one
5746 sequence argument to the MAP call (so that it can't just
5747 do ETYPECASE once and for all based on the type of the
5748 single sequence argument). (The old non-inline implementation
5749 of the general M-argument sequence-of-length-N case required
5750 O(M*N*N) time when any of the sequence arguments were LISTs.)
5751 * The QUIT :UNIX-CODE keyword argument has been renamed to
5752 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5753 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5755 * Raymond Wiker's patches to port dynamic loading from Linux to
5756 FreeBSD have been added.
5757 * The BUGS file is now more nearly up to date, thanks in large part
5758 to Martin Atzmueller's review of it.
5759 * The debugger now flushes standard output streams before it begins
5760 its output ("debugger invoked" and so forth).
5761 * The core version number and fasl file version number have both
5762 been incremented, because of incompatible changes in the layout
5764 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5765 used to not be called for a saved Lisp image.)
5766 * Martin Atzmueller's version of a patch to fix a compiler crash,
5767 as posted on sbcl-devel 13 September 2000, has been installed.
5768 * Instead of installing Martin Atzmueller's patch for the
5769 compiler transform for SUBSEQ, I deleted the compiler transform,
5770 and transforms for some similar consing operations.
5771 * A bug in signal handling which kept TRACE from working on OpenBSD
5773 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5774 away by constant folding
5775 * The system now defines its address space constants in one place
5776 (in the Lisp sources), and propagates them automatically elsewhere
5777 (through GENESIS and the sbcl.h file). Therefore, patching the
5778 address map is less unnecessarily tedious and error-prone. The
5779 Lisp names of address space constants have also been systematized.
5780 * CVS tags like dollar-Header-dollar have been removed from
5781 the sources, because they have never saved me trouble and
5782 they've been source of trouble working with patches and other
5783 diff-related operations.
5784 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5785 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5787 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5789 * The system has been ported to OpenBSD.
5790 * The system now compiles with a simple "sh make.sh" on the systems
5791 that it's supported on. I.e., now you no longer need to tweak
5792 text in the target-features.lisp-expr and symlinks in src/runtime/
5793 by hand, the make.sh takes care of it for you.
5794 * The system is no longer so grossly inefficient when compiling code
5795 involving vectors implemented as general (not simple) vectors (VECTOR T),
5796 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5797 which dares to use the various sequence functions on non-simple
5798 vectors, takes less of a performance hit.
5799 * There is now a primitive type predicate VECTOR-T-P
5800 to test for the (VECTOR T) type, so that e.g.
5801 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5802 can now be compiled with some semblance of efficiency. (The old code
5803 turned the type declaration into a full call to %TYPEP at runtime!)
5804 * AREF on (VECTOR T) is still not fast, since it's still compiled
5805 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5806 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5807 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5808 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5809 without making full calls to SUBTYPEP at runtime.
5810 (Some analogous efficiency issues for non-simple vectors specialized to
5811 element types other than T, or for non-simple multidimensional arrays,
5812 have not been addressed. They could almost certainly be handled the
5813 same way if anyone is motivated to do so.)
5814 * The changes in array handling break binary compatibility, so
5815 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5816 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5817 instead of (VALUES T T).
5818 * By following the instructions that Dan Barlow posted to sbcl-devel
5819 on 2 July 2000, I was able to enable primitive dynamic object
5820 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5821 functionality is not implemented (since it calls ld to resolve
5822 library references automatically, requiring RUN-PROGRAM for its
5823 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5824 try to resolve library references) is now supported.
5825 * The system now flushes the standard output streams when it terminates,
5826 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5827 them at several other probably-convenient times, e.g. in each pass of
5828 the toplevel read-eval-print loop, and after evaluating a form given
5829 as an "--eval" command-line option. (These changes were motivated by a
5830 discussion of stream flushing issues on cmucl-imp in August 2000.)
5831 * The source transform for TYPEP of array types no longer assumes
5832 that an array whose element type is a not-yet-defined type
5833 is implemented as an array of T, but instead punts, so that the
5834 type will be interpreted at runtime.
5835 * There is now some support for cross-compiling in make.sh: each of
5836 the phases of make.sh has its own script. (This should be transparent
5837 to people doing ordinary, non-cross-compile builds.)
5838 * Since my laptop doesn't have hundreds of megabytes of memory like
5839 my desktop machine, I became more motivated to do some items on
5840 my to-do list in order to reduce the size of the system a little:
5841 ** Arrange for various needed-only-at-cold-init things to be
5842 uninterned after cold init. To support this, those things have
5843 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5844 symbols with such names are now uninterned after cold init).
5845 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5846 fasl files for cold load.
5847 ** Remove the old compiler structure pooling code (which used to
5848 be conditional on the target feature :SB-ALLOC) completely.
5849 ** Redo the representation of some data in cold init to be more compact.
5850 (I also looked into supporting byte compiled code at bootstrap time,
5851 which would probably reduce the size of the system a lot, but that
5852 looked too complicated, so I punted for now.)
5853 * The maximum signal nesting depth in the src/runtime/ support code has
5854 been reduced from 4096 to 256. (I don't know any reason for the very
5855 large old value. If the new smaller value turns out to break something,
5856 I'll probably just bump it back up.)
5857 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5859 * Many, many bugs reported by Peter Van Eynde have been added to
5860 the BUGS list; some have even been fixed.
5861 * While enabling dynamic object file loading, I tried to make the
5862 code easier to understand, renaming various functions and variables
5863 with less ambiguous names, and changing some function calling
5864 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5865 * While trying to figure out how to do the OpenBSD port, I tried to
5866 clean up some of the code in src/runtime/. In particular, I dropped
5867 support for non-POSIX signal handling, added various comments,
5868 tweaked the code to reduce the number of compilation warnings, and
5869 renamed some files to increase consistency.
5870 * To support the new automatic configuration functionality in make.sh,
5871 the source file target-features.lisp-expr has been replaced with the
5872 source file base-target-features.lisp-expr and the machine-generated
5873 file local-target-features.lisp-expr.
5874 * fixed a stupid quoting error in make.sh so that using CMU CL
5875 "lisp -batch" as cross-compilation host works again
5877 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5879 * DESCRIBE no longer tries to call itself recursively to describe
5880 bound/fbound values, so that it no longer fails on symbols which are
5881 bound to themselves (like keywords, T, and NIL).
5882 * DESCRIBE now works on generic functions.
5883 * The printer now prints less-screwed-up representations of closures
5884 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5885 * A private symbol is used instead of the :EMPTY keyword previously
5886 used to mark empty slots in hash tables. Thus
5887 (DEFVAR *HT* (MAKE-HASH-TABLE))
5888 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5889 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5890 now does what ANSI says that it should. (You can still get
5891 similar noncompliant behavior if bang on the hash table
5892 implementation with all the symbols you get back from
5893 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5894 This breaks binary compatibility, since tests for equality to
5895 :EMPTY are wired into things like the macroexpansion of
5896 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5898 * There's now a minimal placeholder implementation for CL:STEP,
5899 as required by ANSI.
5900 * An obscure bug in the interaction of the normal compiler, the byte
5901 compiler, inlining, and structure predicates has been patched
5902 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5903 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5905 * Missing ordinary arguments in a macro call are now detected even
5906 when the macro lambda list contains &KEY or &REST.
5907 * The debugger no longer complains about encountering the top of the
5908 stack when you type "FRAME 0" to explicitly instruct it to go to
5909 the top of the stack. And it now prints the frame you request even
5910 if it's the current frame (instead of saying "You are here.").
5911 * As specified by ANSI, the system now always prints keywords
5912 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5914 * The default initial SIZE of HASH-TABLEs is now smaller.
5915 * Type information from CLOS class dispatch is now propagated
5916 into DEFMETHOD bodies, so that e.g.
5917 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5919 is now basically equivalent to
5920 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5921 (DECLARE (TYPE SINGLE-FLOAT X))
5923 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5924 operation, without having to do run-time type dispatch.
5925 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5926 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5927 * Since I don't seem to be making big file reorganizations very often
5928 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5929 is overflowing my ability to conveniently back them up), I've finally
5930 checked the system into CVS. (The CVS repository is on my home system,
5931 not at SourceForge -- putting it on SourceForge might come later.)
5932 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5933 high-level GC-NOTIFY-FOO functions send their output. (There's
5934 still very little control of where low-level verbose GC functions
5935 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5936 less than it used to -- the GC-NOTIFY-FOO functions are now under
5937 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5938 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5939 in only one place in the source code, and propagates it automatically
5940 everywhere that it's needed. Thus e.g. when I bump the version from
5941 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5942 * The C source files now include boilerplate legalese and documentation
5943 at the head of each file (just as the Lisp source files already did).
5944 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5945 to his page will be replaced with a link to his new CLiki service.
5947 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5949 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5950 * The build process now looks for GNU make under the default name "gmake",
5951 instead of "make" as it used to. If GNU make is not available as "gmake"
5952 on your system, you can change this default behavior by setting the
5953 GNUMAKE environment variable.
5954 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5955 can build without error under CMU CL.
5957 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5959 * There is now a partial SBCL user manual (with some new text and some
5960 text cribbed from the CMU CL manual).
5961 * The beginnings of a profiler have been added (starting with the
5962 CMU CL profiler and simplifying and cleaning up). Eventually the
5963 main interface should be through the TRACE macro, but for now,
5964 it's still accessed through vaguely CMU-CL-style functions and macros
5965 exported from the package SB-PROFILE.
5966 * Some problems left over from porting CMU CL to the new
5967 cross-compilation bootstrap process have been cleaned up:
5968 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5969 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5970 part when getting rid of the compiler *BACKEND* stuff.)
5971 ** The value of *NULL-TYPE* was screwed up, because it was
5972 being initialized before the type system knew the final
5973 definition of the 'NULL type. This screwed up several key
5974 optimizations in the compiler, causing inefficiency in all sorts
5975 of places. (I found it because I wanted to understand why
5976 GET-INTERNAL-RUN-TIME was consing.)
5977 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5978 PROCLAIM FTYPE information. Unfortunately this broke binary
5979 compatibility again, since now the forms output by DEFGENERIC
5980 to refer to functions which didn't exist in 0.6.3.
5981 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5982 can use the new (as of 0.6.3) transform for SOME into MAP into
5984 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5985 values to (INTEGER 0 1000000), so that the time code will no longer
5986 occasionally get blown up by Linux returning 1000000 microseconds
5987 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5988 its output conform to the ANSI spec. (Alas, this makes its output
5989 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5990 * A full call to MAP NIL with a single sequence argument no longer conses.
5991 * fixes to problems pointed out by Martin Atzmueller:
5992 * The manual page no longer talks about multiprocessing as though
5993 it were currently supported.
5994 * The ILISP support patches have been removed from the distribution,
5995 because as of version 5.10.1, ILISP now supports SBCL without us
5996 having to maintain patches.
5997 * added a modified version of Raymond Toy's recent CMU CL patch for
5998 EQUALP comparison of HASH-TABLE
6000 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6002 * The system still can't cross-compile itself with
6003 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6004 entails), but at least it can compile more of itself that way
6005 than it used to be able to, and various buglets which were uncovered
6006 by trying to cross-compile itself that way have now been fixed.
6007 * This release breaks binary compatibility again. This time
6008 at least I've incremented the FASL file format version to 2, so that the
6009 problem can be detected reliably instead of just causing weird errors.
6010 * various new style warnings:
6011 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6012 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6013 ** using the lexical binding of a variable named in the *FOO* style
6014 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6015 as specified by ANSI.
6016 * *RANDOM-STATE* is no longer automatically initialized from
6017 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6018 default behavior of the system is to repeat its behavior every time
6019 it's run. If you'd like to change this behavior, you can always
6020 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6021 old convention there was no comparably easy way to get the system to
6022 repeat its behavior every time it was run.
6023 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6024 FTYPE declarations has been removed, in favor of their ANSI
6025 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6026 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6027 the types of their sequence arguments can be determined at compile time.
6028 This is done through a new open code expansion for MAP which eliminates
6029 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6030 argument types can be determined at compile time.
6031 * The optimizer now transforms COERCE into an identity operation when it
6032 can prove that the coerced object is already of the correct type. (This
6033 can be a win for machine generated code, including the output of other
6034 optimization transforms, such as the MAP transform above.)
6035 * Credit information has been moved from source file headers into CREDITS.
6036 * Source file headers have been made more standard.
6037 * The CASE macro now compiles without complaining even when it has
6040 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6042 * (Note that the way that the PCL macroexpansions were rewritten
6043 to accommodate the change in DEFGENERIC below breaks binary
6044 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6045 not run under sbcl-0.6.2. Once we get out of alpha releases,
6046 i.e. hit release 1.0.0, we'll probably try to maintain binary
6047 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6048 and sbcl-1.4.4. Until then, however, it might be fairly common
6049 for maintenance releases to break binary compatibility.)
6050 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6052 * The reporting of unhandled signals has been changed to print some
6053 explanatory text as well as the report form. (Previously only
6054 the report form was printed.)
6055 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6056 it defines, so that the compiler no longer issues undefined function
6057 warnings for compiled-but-not-yet-loaded generic functions.
6058 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6059 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6060 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6061 section of the ANSI spec are supported.
6062 * The "" nickname for the "KEYWORD" package has been removed.
6063 The reader still handles symbol tokens which begin with a package marker
6064 as keywords, but it doesn't expose its mechanism for doing so in the
6065 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6066 * The system now issues STYLE-WARNINGs for contradictory TYPE
6067 proclamations. (Warnings for contradictory FTYPE proclamations would
6068 be nice too, but those can't be done usefully unless the type system
6069 is made smarter about FUNCTION types.)
6070 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6071 systematized, so that "*target-*.lisp is supposed to exist only on the
6072 target and imply that there's a related file which exists on the
6073 host, and *host-*.lisp is supposed to exist only on the host and imply
6074 that there's a related file which exists on the target. This involves a
6075 lot of renaming. Hopefully the acute confusion caused by the renaming
6076 will be justified by the reduction in chronic confusion..
6077 ** runtime-type.lisp -> early-target-type.lisp
6078 ** target-type.lisp -> late-target-type.lisp
6079 ** early-host-format.lisp -> early-format.lisp
6080 ** late-host-format.lisp -> late-format.lisp
6081 ** host-error.lisp -> misc-error.lisp
6082 ** early-error.lisp -> early-target-error.lisp
6083 ** late-error.lisp -> late-target-error.lisp
6084 ** host-defboot.lisp -> early-defboot.lisp
6085 ** code/misc.lisp -> code/target-misc.lisp
6086 ** code/host-misc.lisp -> code/misc.lisp
6087 ** code/numbers.lisp -> code/target-numbers.lisp
6088 ** code/early-numbers.lisp -> numbers.lisp
6089 ** early-host-type.lisp -> early-type.lisp
6090 ** late-host-type.lisp -> late-type.lisp
6091 ** host-typep.lisp -> typep.lisp
6092 ** load.lisp -> target-load.lisp
6093 ** host-load.lisp -> load.lisp
6094 ** host-disassem.lisp -> disassem.lisp
6095 ** host-insts.lisp -> insts.lisp
6096 ** byte-comp.lisp -> target-byte-comp.lisp
6097 ** host-byte-comp.lisp -> byte-comp.lisp
6098 ** host-signal.lisp -> signal.lisp
6099 ** host-defstruct.lisp -> defstruct.lisp
6100 ** late-target-type.lisp -> deftypes-for-target.lisp
6101 Furthermore, several other previously target-only files foo.lisp (e.g.
6102 hash-table.lisp and random.lisp) have been split into a target-and-host
6103 foo.lisp file and a target-only target-foo.lisp file, with their key type
6104 definitions in the target-and-host part, so that the cross-compiler will
6105 know more about target types.
6106 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6107 gone away. In their place are various *BACKEND-FOO* variables
6108 corresponding to the slots of the old structure.
6109 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6110 into the target SBCL has been fixed.
6111 * The chill.lisp system for loading cold code into a running SBCL
6113 * Support for the CMU CL "scavenger hook" extension has been removed.
6114 (It was undocumented and unused in the CMU CL sources that SBCL was
6115 derived from, and stale in sbcl-0.6.1.)
6116 * Various errors in the cross-compiler type system were detected
6117 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6118 (enabling various consistency checks). Many of them were fixed,
6119 but some hard problems remain, so the compiler is back to
6120 running without *TYPE-SYSTEM-INITIALIZED* for now.
6121 * As part of the cross-compiler type system cleanup, I implemented
6122 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6123 * I have started adding UNCROSS calls throughout the type system
6124 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6125 on cross-compiler input files will be able to go away, and various
6127 * CONSTANTP now returns true for quoted forms (as explicitly required
6130 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6132 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6133 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6134 (MAKE-LIST -1). In the longer term, it ought to become true
6135 that declarations are assertions even at SAFETY 1. For now, it's not
6136 quite true even at SAFETY 3, but it's at least more nearly true..
6137 (Note that this change seems to increases the size of the system by
6138 O(5%) and to decrease the speed of the compiler by 20% or more.)
6139 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6140 for the problem of printing dozens of lines of distracting information
6141 about low-level system machinery as part of the top stack frame
6142 on entry to the debugger when an undefined function was called.
6143 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6144 is not reset to COMMON-LISP-USER.
6145 * Compilation of stuff related to dyncount.lisp has been made conditional
6146 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6147 smaller. The various dyncount-related symbols have been moved into
6148 a new "SB-DYNCOUNT" package.
6149 * tty-inspect.lisp has been renamed to inspect.lisp.
6150 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6151 feature has gone away. (When we eventually port to other flavors of
6152 libc and/or Unix, we'll try to make the differences between flavors
6153 invisible at the user level.)
6154 * Various other *FEATURES* tags, and/or their associated conditionals,
6155 have been removed if obsolescent, or given better documentation, or
6156 sometimes given more-mnemonic names.
6158 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6160 * tidied up "make.sh" script
6161 * tidied up system directory structure
6162 * better "clean.sh" behavior
6163 * added doc/FOR-CMUCL-DEVELOPERS
6164 * many many small tweaks to output format, e.g. removing possibly-confusing
6165 trailing #\. character in DESCRIBE-INSTANCE
6166 * (EQUALP #\A 'A) no longer signals an error.
6167 * new hashing code, including EQUALP hashing
6168 * tidied up Lisp initialization and toplevel
6169 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6170 * command line argument processing
6171 * added POSIX-GETENV function to deal with Unix-ish environment variables
6172 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6173 terminating SBCL on EOF
6174 * non-verbose GC by default
6175 * There is no more "sbcl" shell script; the sbcl file is now the C
6176 runtime executable (just like CMU CL).
6177 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6179 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6180 symbol and package information as Lisp native symbol and package objects
6181 instead of strings naming symbols and strings naming packages. This way,
6182 whenever packages are renamed (as in warm init), debug information is
6183 transformed along with everything else.
6184 * tweaked the optimization policy declarations which control the building
6185 of SBCL itself. Now, among other things, the system no longer saves
6186 source location debugging information. (This helps two problems at once
6187 by reducing SBCL size and by keeping SBCL from trying to look for its
6188 sources -- which may not exist -- when reporting errors.)
6189 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6190 debugging and testing purposes
6191 * cleaned up printing, making the printer call PRINT-OBJECT for
6192 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6193 methods, giving nearly-ANSI behavior
6194 * converted almost all special variables to use *FOO* naming convention
6195 * deleted PARSE-TIME functionality, since it can be done portably
6196 * moved some files out of cold init into warm init
6197 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6199 * regularized formatting of source files
6200 * added an install.sh script
6201 * fixed ridiculous memory usage of cross-compiler by making
6202 compiler/alloc.lisp not try to do pooling unless it can hook
6203 itself into the GC of the cross-compilation host. Now the system
6204 builds nicely on my old laptop.
6205 * added :SB-ALLOC in target-features.lisp-expr
6206 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6207 was not implemented)
6208 * re-did condition handling and note reporting in the compiler. Notes
6209 are no longer handled by signalling conditions. Style warnings
6210 and warnings are handled more correctly and reported in such a way
6211 that it's easy to find one or the other in your output (so that you
6212 can e.g. figure out which of many problems caused COMPILE-FILE to
6214 * changed the severity of several compiler warnings from full WARNING
6215 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6216 compiler note reporting so that it doesn't use the condition system
6217 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6218 COMPILE-FILE command)
6219 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6220 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6221 no longer supported, since their implementation was deeply intertwingled
6222 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6223 * removed bogus "support" for compiler macros named (SETF FOO), and
6224 removed the compiler macro for SETF INFO (but only after making a fool
6225 of myself on the cmucl-imp mailing list by posting a bogus patch for
6226 DEFINE-COMPILER-MACRO..)
6227 * Compiled files containing forms which have side effects on the Lisp
6228 reader (such as DEFPACKAGE forms) are now handled more correctly.
6229 (Compiler queuing of top level lambdas has been suppressed by setting
6230 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6231 * deleted various currently-unused source files, e.g. gengc.lisp. They
6232 may be added back at some point e.g. when porting to other architectures,
6233 but until they are it's distracting to distribute them and to try to
6235 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6236 there were so many of them they're just distractions, and UNCROSS is
6237 known to be able to handle the current sources
6238 * moved PROFILE functionality into TRACE, so that it will be clear
6239 how the wrapping and unwrapping of functions when you profile them
6240 interacts with the wrapping and unwrapping of functions when you
6241 trace them. (Actually, the functionality isn't there yet, but at least
6242 the interface specification is there. Hopefully, the functionality will
6243 arrive with some future maintenance release.)
6244 * removed host-oops.lisp
6245 * changed signature of QUIT function to allow UNIX-CODE argument
6246 * fixed READ-SEQUENCE bug
6247 * tweaked verbose GC output so that it looks more like the progress
6248 output that ANSI specifies for functions like LOAD
6249 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6250 * added <http://sbcl.sourceforge.com> to the banner information printed by