1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.48:
3 * enhancement: source locations are now available for files loaded as source,
4 compile-time-too evaluation, and initialization files.
5 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
6 virtual source-file information, eg. overriding input-file of COMPILE-FILE
7 when a temporary file is used for compilation.
8 * enhancement: ASDF has been updated to version 2.015.1.
9 * enhancement: backtraces involving frames from the default evaluator
11 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
12 uninterruptible, as well as blocking reads from socket streams created
13 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
15 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
16 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
17 years, is now no longer supported.
18 * enhancement: read() and write() have been added to SB-POSIX.
19 * enhancement: types of DEFSTRUCT constructors are proclaimed more
20 accurately, allowing better typechecking of call-sites.
21 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
22 are no longer caught. (reverted to pre 1.0.34 behaviour)
23 * optimization: slightly faster ISQRT. (lp#713343)
24 * bug fix: better support for Solaris /bin/sh in sh-based tests.
25 * bug fix: TRACE behaves better when attempting to trace undefined
26 functions. (lp#740717)
27 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
28 to (FUNCALL #'(LAMBDA ...) ...).
29 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
30 a compile-time error. (lp#720382)
31 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
33 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
34 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
35 optimization. (regression from 1.0.45.18/1.0.46.15)
36 * bug fix: package locks did not protects against compile-time side-effects
38 * bug fix: --dynamic-space-size argument is validated more carefully.
40 * bug fix: memory fault from printing a malformed simple-condition.
42 * bug fix: redefining classes so that slot-definition classes change now
43 engages the obsolete instance protocol. (lp#766271)
44 * bug fix: constant improper lists could break source coverage recording.
46 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
49 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
50 * bug fix: fix mach port rights leaks in mach exception handling code on
51 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
53 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
54 * enhancement: redefinition warnings for macros from different files. (lp#434657)
55 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
56 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
57 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
58 processed using EVAL -- now the appropriate toplevel form is reported instead.
59 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
60 declarations. (lp#726331)
61 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
62 that NIL/NULL is excluded from the type.
63 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
65 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
67 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
68 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
69 stack-allocated values out of their dynamic-extent. (lp#310175)
70 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
71 x86-64 builds caused a type-error.
72 * bug fix: calling COMPILE with something else than a lambda-expression as the
73 second argument reports a more sensible error. (lp#718905)
74 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
75 are detected. (lp#520607)
76 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
78 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
79 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
80 methods. (regression from 1.0.45.18)
81 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
82 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
83 * bug fix: several foreign functions accepting string also accepted NIL and
84 consequently caused a memory fault at 0 now signal a type-error instead.
86 * bug fix: under rare circumstances, constraint propagation could rewrite a
87 variable reference to refer to a variable not in scope, causing an error
88 during physical environment analysis when attempting to close over the
90 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
92 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
93 * enhancement: largefile support on Solaris.
94 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
96 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
97 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
99 * optimization: ERROR and CERROR are approximately 5 times faster.
100 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
101 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
102 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
103 up instance creation in those cases.
104 * optimization: arithmetic operations with multiple constant arguments in now
105 have them reduced at compile-time. (lp#676414)
106 * optimization: determining current character position on string-streams for
107 pretty-printing was overly slow.
108 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
109 lifetime analysis to overwrite closed-over variables (lp#681092).
110 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
111 were not handled correctly (lp#713063).
112 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
114 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
115 mistake. (lp#667297).
116 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
117 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
118 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
119 unintern the wrong symbol with the same name. (lp#693796)
120 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
121 making it possible to restore the initial table if it has been messed up.
124 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
125 * enhancement: ~/ and ~user/ are treated specially in pathnames.
126 Refer to documentation for details.
127 * enhancement: ASDF has been updated to version 2.010.
128 * optimization: mutated closed-over variables that are only accessed by
129 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
130 declared to be DYNAMIC-EXTENT) are stored directly in their containing
131 stack frame, rather than allocating a VALUE-CELL (lp#586103).
132 * optimization: UNWIND-PROTECT cleanup functions are now declared
134 * bug fix: backtracing function with &REST arguments now shows the full
135 argument list. (lp#310173)
136 * bug fix: return types for functions with complex lambda-lists are now
137 derived properly (lp#384892)
138 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
139 long string arguments slowed the compiler down to a crawl.
140 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
141 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
142 in the DEFMETHOD body.
143 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
144 messages, being instead replaced with the corresponding function name.
145 * bug fix: don't derive overly complex unions of numeric types for arithmetic
146 operators. (lp#309448)
148 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
149 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
150 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
151 * enhancement: ALLOCATION-INFORMATION also provides the page the object
153 * enhancement: default dynamic-space size can be configured at build-time
154 without touching source, using the --dynamic-space-size argument to make.sh.
155 * enhancement: DESCRIBE recognizes symbols naming optimization policy
156 qualities, and mentions ALWAYS-BOUND declarations.
157 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
159 * enhancement: ASDF has been updated to 2.009.
160 * enhancement: the system detects known type-erros in calls better,
161 signalling a full warning about violated proclaimed FTYPEs and violations
162 of derived FTYPEs within the same file, including self-calls.
163 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
164 * optimization: constant-folding exploits numeric and character types, in
165 addition member types.
166 * optimization: numeric, character and member types that are inhabited by
167 exactly one value are tested with EQL.
168 * optimization: more conditional branches are eliminated during IR1.
169 Branches are simplified before performing if/if-conversion, and simple
170 equivalent branches (that only read the same constant or variable) are
172 * improvements to the Windows port:
173 ** change: canonical unparsing form for pathname namestrings now uses / as
174 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
175 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
176 on Windows. (thanks to Kalyanov Dmitry)
177 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
179 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
180 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
181 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
182 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
184 * bug fix: interrupts arriving during CL:OPEN caused an error.
185 * bug fix: overeager character buffering could cause input to block
186 spuriously when reading from a pipe (lp#643686)
187 * bug fix: more efficient timer expiry should avoid starvation on systems
188 where number of SIGALRMs per second is restricted. (lp#375515)
189 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
190 * bug fix: compile-times no longer scale linearly with the size of
191 quoted lists in source-code. (lp#654289)
192 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
193 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
194 so badly. (lp#654485)
195 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
196 an error for eg. STRUCTURE. (lp#458015)
197 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
198 (lp#613871, thanks to Roman Marynchak)
199 * bug fix: more reliable &REST list type derivation. (lp#655203)
200 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
201 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
202 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
203 also declared NOTINLINE. (lp#655581)
204 * bug fix: the compiler could attempt to emit constant left shifts of
205 greater value than n-word-bits. (lp#309063)
206 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
207 type information for the function being set. (lp#659220)
208 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
209 containing self-calls were recompiled with a new signature, and failed
210 to warn when a self-call using the old signature was left in. (lp#655126)
211 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
212 :DEFAULT when the default external had character size other than 8 bits.
214 * bug fix: derived types of functions in the same file were implicitly
215 trusted, leading to potential heap corruption when those function were
216 defined incompatibly. (lp#657499)
217 * bug fix: existing ASDF source registries are ignored when building
219 * bug fix: short-form DEFSETF checks that the second argument is a symbol
220 (lp#655824, thanks to Roman Marynchak)
221 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
222 package-lock violation was detected. (lp#660752)
223 * bug fix: the system can store different docstrings for a single function
224 under different names. (lp#661631, regression from 1.0.29.24)
225 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
226 properly. (lp#384801)
227 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
228 of specified length could confuse the type derivation in unsafe code.
230 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
231 fork with multiple Lisp threads running is made on every platform,
232 not just Darwin. (lp#451111)
233 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
234 around when core was saved, which could cause undefined behaviour when the
236 * bug fix: Allow UNTRACE of functions that are no longer defined
237 (lp#667657, thanks to Attila Lendvai)
238 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
239 compile-time warning (lp#664373, thanks to Stas Boukarev)
241 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
242 * incompatible change: FD-STREAMS no longer participate in the serve-event
243 event-loop by default. (lp#316072)
244 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
245 affects streams from CL:OPEN.
246 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
247 default, but this is liable to change: applications needing serve-event
248 for socket streams should explicitly request it using :SERVE-EVENTS T
250 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
252 * enhancement: CLOS effective method functions and defclass slot typechecking
253 function now have debug names for use in backtraces and profiles.
254 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
256 * enhancement: symbols are printed using fully qualified names in several
257 error and warning messages which are often associated with package
258 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
259 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
260 thanks to Andrew Golding)
261 * bug fix: reading /proc files on Linux works. (lp#425199)
262 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
264 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
265 breaking code that tried to write the value of a printer control variable.
266 (lp#581564, thanks to Stas Boukarev)
267 * bug fix: WRITE compiler macro did not handle output stream designators
268 correctly. (lp#598374, thanks to Stas Boukarev)
269 * bug fix: better availability of names of foreign functions in backtraces
270 on Linux. (lp#626962, thanks to Stas Boukarev)
271 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
272 lp#627581, thanks to Josh Elsasser and Jim Wise)
273 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
274 thanks to Josh Elsasser)
275 * bug fix: using aliases for builtin classes as defmethod specializers
276 without adding DEFTYPEs for them works. (lp#618387)
277 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
279 * bug fix: legally dynamic-extent lists and vectors used as
280 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
281 * bug fix: inline-expansion creating references to dead lambda-variables
282 (lp#454681, thanks to Alexey Dejneka)
283 * bug fix: better error message for bogus numerical arguments to RANDOM.
284 (lp#598986, thanks to Stas Boukarev)
285 * bug fix: the compiler occasionally inlined references from incompatible
286 environments occurs. (lp#308951)
287 * bug fix: the compiler threw an error when trying to compile a local
288 function (labels or flet) known to take a specialized complex argument.
289 (not in launchpad, reported by sykopomp in #lispgames)
290 * bug fix: package-locks failed to protect against compile-time effects of
291 DEFUN when the symbol previously had a macro definition. (lp#576637)
292 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
293 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
294 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
295 * bug fix: evaluation in debugger REPL works using the global context when
296 in frames that do not have sufficient debug information.
297 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
299 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
301 * bug fix: interrupt taking longer than the requested period caused SLEEP
302 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
304 changes in sbcl-1.0.42 relative to sbcl-1.0.41
306 ** Cross-compilation host is now specified to make.sh using
307 command-line argument --xc-host=<command> instead of a positional
308 argument. (thanks to Daniel Herring)
309 ** Install location can be specified to make.sh using command-line
310 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
311 * optimization: The default implementation of
312 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
313 * enhancement: Explicit memory barrier operations are now available for use
314 by multithreaded code. See documentation for details.
315 * enhancement: Experimental support for threading on Linux/PPC.
316 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
317 * bug fix: EXPT signals an error if first argument is a zero and second
318 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
319 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
320 (lp#576594, thanks to Roman Marynchak)
321 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
322 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
324 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
325 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
326 cached, leading to many fewer expensive calls to
327 COMPUTE-APPLICABLE-METHODS.
328 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
329 CLASS argument, search for and call an appropriate optimized ctor function
331 * bug fix: WRITE always returns the correct value.
333 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
334 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
335 * bug fix: Name conflicts between symbols passed as arguments to a single
336 call to IMPORT no longer add multiple symbols with the same name to the
337 package (detectable via DO-SYMBOLS).
338 * bug fix: support building without the dlshim on darwin x86 and x86-64
340 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
342 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
343 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
345 * bug fix: linkage-table entries on PPC now no longer overflow their
346 space allocation (potentially causing crashes if they are written out
348 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
349 platforms, preventing the GC from seeing stale pointers on the control
350 stack in subsequent GCs (which would, and does, break invariants).
351 * bug fix: 32-bit unicode external formats now work on big-endian systems.
352 * bug fix: Literal characters with code points greater than about 32767
353 now work on PPC UNICODE builds.
354 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
355 high order bits are explicitly cleared out. In some contrived situations,
356 this could lead to wrong results in mixed real/complex float arithmetic.
357 * bug fix: Fix function/macro redefinition warnings when building with
358 clisp. (lp#576787, thanks to Josh Elsasser)
359 * new platform: experimental support for ppc/openbsd (thanks to Josh
361 * bug fix: Floating-point traps now work on ppc/linux.
363 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
364 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
365 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
366 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
367 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
368 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
369 SB-THREAD:GRAB-MUTEX.
370 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
371 contain additional data structures and tools for concurrent programming;
372 at the moment it contains a lock-free queue, and a lock-free mailbox
374 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
375 GET-MUTEX but takes &key rather than &optional parameters. Also added
376 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
378 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
379 SB-THREAD:WAIT-ON-SEMAPHORE.
380 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
382 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
383 conditions to defer the deadline for forever.
384 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
386 * enhancement: errors from NO-APPLICABLE-METHOD and
387 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
388 generic function call.
389 * enhancement: SB-BSD-SOCKET improvements
390 ** sockets and socket streams now have a more informative printed
391 representation based on the corresponding SOCKET-NAME and
393 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
395 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
396 CL:CLOSE when appropriate, and no longer disassociates the stream
397 from the socket if close failed. (lp#543951)
398 * improvements to the instrumenting profiler
399 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
400 ** optimization: counters no longer use locks for the overflow mode.
401 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
402 incurred an off-by-one miscount.
403 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
404 * enhancement: improved DEFMETHOD pretty-printing.
405 * enhancement: perform range reduction when arguments are too large for
406 x87's transcendentals (instead of returning 0). (lp#327192)
407 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
408 some of CL-PPCRE's macros. (lp#570079)
409 * enhancement: our machine code is slightly less hostile to valgrind on
411 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
412 to Robert Swindells and Aleksej Saushev)
413 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
414 * bug fix: a rare case of startup-time page table corruption.
415 * bug fix: a semaphore with multiple waiters and some of them unwinding due
416 to timeouts could be left in an inconsistent state.
417 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
418 * bug fix: misoptimization of multiplication by one in
419 (SB-C::FLOAT-ACCURACY 0) policies.
420 * bug fix: miscounts in SB-PROFILE.
421 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
422 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
423 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
424 up itself" (March 2010) for further details.
425 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
426 against length of the list if the element is found before the specified
427 END is reached. (thanks to Alec Berryman, lp#554385)
428 * bug fix: errors signalled during package graph modification no longer
429 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
430 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
431 :SB-DOC feature. (lp#552564)
432 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
433 * bug fix: more robust runtime executable path detection. (lp#375549)
434 * bug fix: GCD always returns positive values. (lp#413680)
435 * bug fix: Converting division to multiplication by reciprocal handles
437 * bug fix: We were too eager in eliding range reduction tests on x87.
438 The maximal magnitude is 2^63, not 2^64.
439 * bug fix: Transforms for TRUNCATE don't die when the result is completely
441 * bug fix: Maybe restore buildability on Alpha.
442 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
444 * bug fix: RANDOM-STATE can be printed readably again.
445 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
446 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
447 types) could result in type mismatches during compilation.
449 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
450 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
451 stack frame thrown from.
452 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
453 compiler optimization qualities inside dynamic extent of its body.
454 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
455 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
457 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
458 constraint propgation, allowing better compilation eg. when used to
459 access structures with WITH-SLOTS. (lp#520366)
460 * optimization: the compiler is now more aware of the type of the underlying
461 storage vector for multidimensional simple arrays resulting in better code
462 for accessing such arrays.
463 * optimization: passing NIL as the environment argument to TYPEP no longer
464 inhibits optimizing it. (lp#309788)
465 * optimization: more efficient register usage when handling single-float
466 arguments on x86-64. (thanks to Lutz Euler)
467 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
468 pre-allocated temporary vectors. (lp#496249)
469 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
470 in :INITIAL-CONTENTS. (lp#523612)
471 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
472 functions. (lp#524707)
473 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
474 WITH-SLOTS usages during compilation.
475 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
476 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
477 all x86oid platforms with :UD2-BREAKPOINTS target feature.
478 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
479 instruction (tested on x86oid linux with ud2-breakpoints).
480 * bug fix: slam.sh now works on win32.
481 * bug fix: better differences of numeric types. (lp#309124)
482 * bug fix: arrays declared intersection and union types can have their
483 upgraded element type derived. (lp#316078)
484 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
485 threads started during profiling. (lp#472499)
486 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
488 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
489 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
490 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
491 values instead of signaling an error. (lp#309093)
492 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
494 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
495 declarations (lp#497321)
496 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
497 and failed to detect circular lists (lp#452008)
498 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
500 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
501 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
502 due to it, so that handlers can run.
503 * bug fix: reparsing undefined types if they have become defined since
505 * bug fix: missing &REST type in a proclamation for a function with both
506 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
507 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
508 expanded calls (lp#542174)
509 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
510 than just at toplevel form.
512 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
513 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
514 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
515 but work on type specifiers.
516 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
517 to name a type specifier.
518 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
519 specifier is valid where "valid" basically means "would be accepted as
520 second argument of TYPEP".
521 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
522 returns the function's declared, or derived FTYPE.
523 * new feature: SB-POSIX now supports accessing the d_ino member of
524 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
525 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
526 provide for seeding a RANDOM-STATE object with user-provided data or
527 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
528 attempt to initialize the returned state from the operating system's
529 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
530 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
531 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
532 * bug fix: Fix grammar and style issues for the docstrings of
533 printer-related variables and functions. (Thanks to mon_key; launchpad
535 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
537 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
538 in a row even though a handler defered the deadline long into the
540 * bug fix: A deadline handler was run without interrupts enabled for a
541 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
542 in infinitely spinning, non-killable threads.
543 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
544 before reaching the erring stack frame.
545 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
546 real power. (launchpad bug lp#525949)
547 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
548 GENCGC platforms. (launchpad bug lp#529014)
549 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
550 (launchpad bug lp#525916)
551 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
552 (Thanks to Robert Goldman)
554 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
555 * optimization: ROUND with a single single-float or double-float argument
556 is properly inlined when possible.
557 * optimization: Slightly better code is generated for integer<->float
558 conversions and for single-float<->double-float conversions on x86-64.
559 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
560 code for 32-bit and 64-bit rotations on x86-64.
561 * bug fix: The install script changes the ownership of directories as well
562 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
563 launchpad bug lp#508485)
564 * bug fix: TRUNCATE with a single single-float or double-float argument is
565 properly inlined when possible. (launchpad bug lp#489388)
566 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
567 no longer causes a compiler error on x86 and ppc.
568 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
569 always relative to *READTABLE* rather than the passed argument.
571 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
572 * minor incompatible change: threading support is now enabled by default
574 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
576 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
577 are now caught and reported just like errors during macroexpansion.
578 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
579 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
580 * enhancement: ASDF systems can now depends on SB-QUEUE.
581 * fixes and improvements related to Unicode and external formats:
582 ** bug fix: error handling and restart usage in the ucs-2 external format
584 ** there is now an implementation of the ucs-4 external format.
585 ** the utf-16 and utf-32 external formats are supported.
586 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
587 in the environment. setenv() and unsetenv() are also provided. (reported by
588 Fare Rideau; launchpad bug lp#460455)
589 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
590 loading. This ensures sensible errors for .FASL files from other
591 implementations on case-insensitive filesystems. (reported by Willem
592 Broekema; launchpad bug lp#489417)
593 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
594 Willem Broekema; launchpad bug lp#489698).
595 * bug fix: some minor code rearrangements to reenable warning-free building
596 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
597 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
599 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
602 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
603 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
604 * improvement: support O_LARGEFILE access to files larger than 2GB on
605 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
606 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
607 definitions for methods specializing on the passed class itself.
608 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
609 definitions for methods specializing on the passed class itself, or on
611 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
612 about itself during the build (e.g. for M-? in Slime), if this flag is
613 enabled in customize-target-features.lisp. This will increase the core
614 size by about 5-6mb, though, so it's mostly interesting to SBCL
616 * new feature: various GENCGC tuning parameters have been experimentally
617 documented and exported from SB-EXT. See documentation for details.
618 * fixes and improvements related to Unicode and external formats:
619 ** the Unicode character database has been upgraded to the
620 Unicode 5.2 standard, giving names and properties to a number of new
621 characters, and providing a few extra characters with case
623 ** improvement: restarts for providing replacement input/output on coding
624 errors for fd-stream external formats.
625 ** improvement: where :<encoding> is a keyword corresponding to an
626 external format the system supports, it is now possible to specify
627 (:<encoding> :replacement <character>) as an external format which will
628 automatically substitute <character> on encoding or decoding errors for
629 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
631 ** improvement: the file streams underlying the standard streams (such as
632 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
633 which uses the replacement mechanism to handle encoding errors,
634 preventing various infinite error chains and unrecoverable I/O
636 ** minor incompatible change: the utf-8 external format now correctly
637 refuses to encode Lisp characters in the surrogate range (char-codes
638 between #xd800 and #xdfff).
639 ** fix a typo preventing conversion of strings into octet vectors
640 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
642 ** fix a bug in the octet multibyte handling of decoding errors and the
643 USE-VALUE restart. (launchpad bug lp#314939)
644 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
645 restart on fd-stream decoding errors.
646 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
647 error is near the end of file.
648 ** fix a double-error case in unibyte octet conversions, when the first
649 use of USE-VALUE is ignored.
650 ** fix bugs in handling of undefined code points in unibyte encodings.
651 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
652 streams after an UNREAD-CHAR.
653 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
654 object is allocated in a boxed region of dynamic space.
655 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
656 fork with multiple Lisp threads running is made, instead of going
657 ahead with unpredictable consequences. (reported by Leslie Polzer)
658 * bug fix: uses of slot accessors on specialized method parameters within
659 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
660 error while finalizing the class. This fix may cause classes with slot
661 accessors to be finalized later than previously. (reported by Lars Rune
662 Nøstdal; launchpad bug lp#473699)
663 * bug fix: restore buildability on the MIPS platform. (regression from
664 1.0.30.38, reported by Samium Gromoff)
665 * bug fix: inspecting closures is less likely to fail with a type error.
666 * bug fix: no timer starvation when setting the system clock back.
667 (launchpad bug lp#460283)
668 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
669 standard pprint dispatch table as specified by CLHS.
670 * bug fix: give CLISP a hint about a type declaration to enable it to build
671 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
673 * bug fix: correctly dump literal objects in defaulting forms of arglists.
674 (reported by Attila Lendvai; launchpad bug lp#310132)
675 * bug fix: distinguish in type specifiers between arrays that might be
676 complex and arrays that are definitely complex. (launchpad bug lp#309129)
677 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
678 type. (reported by Levente Mészáros; launchpad bug lp#485972)
679 * bug fix: setting the value of a symbol-macro within a method in the
680 presence of type declarations works properly again. (reported by Iban
681 Hatchondo; launchpad bug lp#485019)
683 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
684 * optimization: faster FIND and POSITION on strings of unknown element type
685 in high SPEED policies. (thanks to Karol Swietlicki)
686 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
688 * improvement: better error signalling for bogus parameter specializer names
689 in DEFMETHOD forms (reported by Pluijzer)
690 * bug fix: DELETE-FILE once again works on logical pathnames (regression
692 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
694 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
695 removes previous default initargs (reported by Lars Rune Nøstdal and
697 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
698 lambda-lists. (reported by Peter Seibel)
699 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
700 correctly when starting from an executable core without saved runtime
701 options (reported by Faré Rideau, thanks to Zach Beane)
702 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
703 an optimization note instead. (reported by Martin Cracauer)
704 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
705 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
706 new process group if it doesn't need to share stdin with the sbcl
707 process. (thanks to Leslie Polzer)
708 * bug fix: SATISFIES could be misoptimized to refer to a local function.
709 (reported by Stanislaw Halik)
711 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
712 * improvement: stack allocation is should now be possible in all nested
713 inlining cases: failure to stack allocate when equivalent code is manually
714 open coded is now considered a bug.
715 * improvements related to Unicode:
716 ** the Unicode character database has been upgraded to the
717 Unicode 5.1 standard, giving names and properties to a number of new
718 characters, and providing a few extra characters with case
720 ** the system now recognizes and produces names for Unicode Hangul
722 ** the EBCDIC-US external-format is now supported for octet operations
723 (as well as for stream operations).
724 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
725 be used to output toplevel compile-time effects into a separate .CFASL
727 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
728 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
730 * optimization: TRUNCATE on known single- and double-floats is upto 25%
732 * optimization: division of floating point numbers by constants uses
733 multiplication by reciprocal when an exact reciprocal exists.
734 * optimization: multiplication of single- and double-floats floats by
735 constant two has been optimized.
736 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
737 sufficient type information is available. (thanks to Leslie Polzer)
738 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
739 known structure objects are as efficient as defstruct generated accessors.
740 * optimization: unused vector creation can now be optimized away.
741 * improvement: ASDF systems can now depends on SB-INTROSPECT.
742 * improvement: a STYLE-WARNING is signalled when a generic function
743 clobbers an earlier FTYPE proclamation.
744 * improvement: the compiler is able to track the effective type of
745 generic function across method addition and removal even in the
746 absence of an explicit DEFGENERIC.
747 * improvement: DESCRIBE now reports on symbols naming undefined
748 but assumed or declared function as well.
749 * improvement: recompilation of systems using SB-GROVEL now works
750 (thanks to Leslie Polzer)
751 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
752 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
754 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
755 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
756 well as user defined declaration names.
757 ** VARIABLE-INFORMATION is now aware of alien variables.
758 * improvement: improved address space layout on OpenBSD (thanks to Josh
760 * improvement: pretty-printing of various Lisp forms has been improved
761 (thanks to Tobias Rittweiler)
762 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
763 unused were deleted in safe code. (reported by John Fremlin)
764 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
766 * bug fix: some out-of-line array predicates were missing (reported by
768 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
770 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
771 (thanks to Larry D'Anna)
772 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
773 as well. (reported by Josh Elsasser)
774 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
775 leading to possible attempts to delete the same file twice. See docstring
776 on DELETE-FILE for details. (reported by John Fremlin)
777 * bug fix: DELETE-FILE once again deletes the file named by the pathname
778 designator argument, rather than its truename. (reported by Luis
780 * bug fix: the low-level debugger had 32-bit assumptions and was missing
781 information about some array types. (thanks to Luis Oliveira)
782 * bug fix: moderately complex combinations of inline expansions could
783 be miscompiled if the result was declared to be dynamic extent.
784 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
785 form (+ <variable> <integer>) were miscompiled under certain
787 * bug fix: in some cases no compiler note about failure to stack allocate
788 was emitted, even if the objects were in fact heap allocated.
789 * bug fix: minor violation of "otherwise inaccessible" rule for stack
790 allocation could cause objects users might reasonably expect to
791 be heap allocated to be stack allocated.
792 * bug fix: DESCRIBE signalled an error for generic functions under
793 certain circumstances. (thanks to Leslie Polzer)
794 * bug fix: Fixed spelling of an error message.
796 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
797 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
798 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
799 of SB-THREAD:THREAD-ERROR-THREAD.
800 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
801 * new feature: docstrings for local and anonymous functions are no longer
802 discarded. (thanks to Leslie Polzer)
803 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
804 values in other threads.
805 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
806 about object allocation.
807 * optimization: division of a real float by a complex float is implemented
808 with a specialised code sequence.
809 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
810 keywords is an order of magnitude faster.
811 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
812 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
813 methods, and similarly for non-standard metaclass classes as long as there
814 are no methods additional on MAKE-INSTANCE.
815 * optimization: more efficient type-checks for FIXNUMs when the value
816 is known to be a signed word on x86 and x86-64.
817 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
818 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
820 * optimization: compiler is smarter about delegating argument type checks to
822 * optimization: several character functions are now compiled somewhat more
823 efficiently. (reported by Lynn Quam)
824 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
825 * improvement: less unsafe constant folding in floating point arithmetic,
826 especially for mixed complex/real -float operations.
827 * optimization: constant double and single floats are stored in native
828 unboxed format on x86[-64].
829 * optimization: smarter code for arithmetic operations with constant floats,
830 complex floats, or integers on x86[-64].
831 * optimization: smarter code for conjugate/multiplication of float complexes
832 and abs/negate of floats on x86-64.
833 * optimization: more efficient complex float and real float operations on
835 * improvement: complex float division is slightly more stable.
836 * improvement: DESCRIBE output has been reworked to be easier to read and
837 contains more pertinent information.
838 * improvement: failure to provide requested stack allocation compiler notes
839 provided in all cases (requested stack allocation not happening without a
840 note being issued is now considered a bug.)
841 * bug fix: SB-POSIX exports the documented types and functions
842 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
843 types. (reported by "abhi")
844 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
845 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
846 (thanks to Paul Khuong)
847 * bug fix: looping around HANDLER-CASE could silently consume stack space
848 on each iteration. (reported by "foobar")
849 * bug fix: better error signalling when calls to functions seeking elements
850 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
851 (reported by Tobias Rittweiler)
852 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
853 directory components now works as it used to. (various prolems reported by
854 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
855 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
856 (reported by Elliot Slaughter, thanks to Stas Boukarev)
857 * bug fix: bogus undefined variable warnings from fopcompiled references to
858 global variables. (thanks to Lars Rune Nøstdal)
859 * bug fix: foreign function names should now appear in backtraces on
860 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
861 * bug fix: SETF compiler macro documentation strings are not discarded
863 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
864 (thanks to Alex Plotnick)
865 * bug fix: SLEEP accepts large integer arguments, truncating them to
866 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
867 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
868 * bug fix: compiler notes for expensive slot type checks could be emitted
869 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
871 changes in sbcl-1.0.29 relative to 1.0.28:
872 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
873 https://bugs.launchpad.net/sbcl
874 Bugs can be reported directly there, or by sending email to
875 sbcl-bugs@lists.sourceforge.net
876 (no subscription required.)
877 * minor incompatible change: under weak type checking policy integer
878 types are weakened less aggressively.
879 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
880 allowed to return, which causes SBCL to quit with exit status 0. Previously
881 if the function returned with a small integer return value, that value
882 was accidentally reused as the exit status.
883 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
884 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
885 :HASH-FUNCTION argument. Refer to user manual for details.
886 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
888 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
889 microseconds since the Unix epoch on all platforms.
890 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
891 allows the compiler to safely elide boundedness checks for special
893 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
894 the symbol, prohibits both lexical and dynamic binding. This is mainly an
895 efficiency measure for threaded platforms, but also valueable in
897 * new feature: UNC pathnames are now understood by the system on Windows.
898 * optimization: the compiler uses a specialized version of FILL when the
899 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
901 * optimization: accesses to potentially non-simple arrays where element type
902 is known are 50% faster.
903 * optimization: compiler now generates faster array typechecking code.
904 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
906 * optimization: multidimensional array accesses in the absence of type
907 information regarding array rank are approximately 10% faster due to
908 open coding of ARRAY-RANK.
909 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
910 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
912 * optimization: result of call to VECTOR can now be stack allocated.
913 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
914 as long as the resulting array is one-dimensional and has a known
915 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
916 length of the list matches the known length of the vector does not
917 allocate the list as an intermediate step. Ditto for VECTOR and simple
919 * optimization: MAKE-ARRAY can now stack allocate in the presence of
920 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
921 known element type, and is known to be simple and one dimensional.
922 * improvement: SBCL now emits a compiler note where stack allocation was
923 requested but could not be provided (not in all cases, unfortunately)
924 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
925 * improvement: pretty-printing loop has been implemented properly. (thanks
926 to Tobias Rittweiler)
927 * documentation: CLOS slot typechecing policy has been documented.
928 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
929 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
930 pointer, leading to memory faults. (thanks to Bart Botta)
931 * bug fix: better floating point exception handling on x86/OpenBSD.
932 (thanks to Josh Elsasser)
933 * bug fix: exit status from QUIT when called under --script was lost
934 (reported by Hubert Kauker)
935 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
936 same implementation of FILL to initialize the array, even if a more
937 efficient one was available (reported by Stas Boukarev, thanks to
939 * bug fix: potential miscompilation of array stack allocation on x86 and
940 x86-64. (reported by Time Tossavainen)
941 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
942 result in their subforms being treated as top level forms. (reported by
944 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
945 than a machine register could leave garbage in the high bits of the
946 result register (bug 316325).
947 * bug fix: disable address space randomization Linux/x86-64 as well,
948 not just x86-64. (reported by Ken Olum)
949 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
950 generate incorrect code.
951 * bug fix: #201; type inference for CONS and ARRAY types could derive
952 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
953 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
954 could not be assigned to or bound with PROGV. (reported by Lorenz
956 * bug fix: the value of CL:- in the inspector was the previous expression
957 evaluated rather than the expression being evaluated.
958 * bug fix: constants can no longer be locally declared special.
959 * bug fix: signals delivered to threads started from foreign land (read:
960 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
961 thread by blocking all signals and resignalling.
962 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
963 from :INITFORM, if any.
965 changes in sbcl-1.0.28 relative to 1.0.27:
966 * a number of bugs in cross-compilation have been fixed, with the ultimate
967 result that building under (at least) clisp should be much more reliable.
968 * minor incompatible changes: echo-streams now propagate unread-char to the
969 underlying input stream, and no longer permit unreading more than one
971 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
972 frames, allowing for instance more reliable backtraces.
973 * improvement: the debugger REPL can now reference lexical variables
974 by name directly for code compiled with (DEBUG 3).
975 * improvement: errors from malformed declarations now have better source
976 paths associated with them. (thanks to Tobias Rittweiler)
977 * optimization: faster local calls on x86/x86-64
978 * bug fix: some error messages for out-of-bound array indexes confused the
979 index and the bound. (thanks to Stas Boukarev)
980 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
982 * bug fix: running regressions tests in shells without OSTYPE set now works.
983 (reported by Harald Hanche-Olsen)
984 * bug fix: more robust static space exhaustion signalling from
985 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
986 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
987 docstring away instead of storing it under names such as (LAMBDA (X)).
988 (reported by Leslie Polzer)
989 * bug fix: timers could go off in the wrong order, be delayed indefinitely
990 (thanks to Ole Arndt for the patch)
991 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
992 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
993 potentially-invalid effective methods in its cache.
994 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
995 instances as well (thanks to Paul Khuong)
996 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
997 SB-POSIX:WAITPID and their C equivalents.
998 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1000 changes in sbcl-1.0.27 relative to 1.0.26:
1001 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1002 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1003 * improvement: the system either recovers from stack exhaustion or dies
1004 properly as opposed to leaving the user uncertain of whether the handler
1005 trampled on some random memory next to the stack or having to rely on
1006 --lose-on-corruption (which is still a good idea to use in production
1007 because stack exhaustion can happen in signal handlers which will likely
1009 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1010 1.0.25.37, reported by Harald Hanche-Olsen)
1011 * bug fix: work around signal delivery bug in darwin (regression from
1012 1.0.25.44, reported by Sidney Markowitz)
1013 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1015 changes in sbcl-1.0.26 relative to 1.0.25:
1016 * incompatible change: an interruption (be it a function passed to
1017 INTERRUPT-THREAD or a timer function) runs in an environment where
1018 interrupts can be enabled. The interruption can use
1019 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1020 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1021 potentially running out of stack. Keep in mind that in the absence
1022 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1023 acquiring a lock can enable interrupts.
1024 * incompatible change: GC-OFF and GC-ON are removed, as they were
1025 always unsafe. Use WITHOUT-GCING instead.
1026 * new feature: runtime option --disable-ldb
1027 * new feature: runtime option --lose-on-corruption to die at the
1028 slightest hint of possibly non-recoverable errors: running out of
1029 memory, stack, alien stack, binding stack, encountering a memory
1030 fault, etc. In the absence of --lose-on-corruption a warning is
1032 * enhancement: detect binding stack exhaustion
1033 * enhancement: detect alien stack exhaustion on x86/x86-64
1034 * improvement: generally more stable and reliable interrupt handling
1035 * improvement: there is a per thread interruption queue,
1036 interruptions are executed in order of arrival
1037 * improvement: a repeating timer reschedules itself when the it has
1038 finished, but expiration times are spaced equally. If an
1039 expiration time is in the past it will trigger after a short grace
1040 period that may give a chance to other things to run.
1041 * optimization: slightly faster gc on multithreaded builds
1042 * optimization: faster WITHOUT-GCING
1043 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1044 important locks so that the debugger/handler doesn't produce
1045 recursive errors or deadlock.
1046 * bug fix: real-time signals are not used anymore, so no more
1047 hanging when the system wide real-time signal queue gets full.
1048 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1050 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1051 * bug fix: fix random memory faults related to interrupts on alpha
1052 * bug fix: fix random memory faults related to interrupts on sparc
1053 * bug fix: fix deadlocks related to starting threads
1054 * bug fix: fix deadlines on locks on futex platforms
1055 * bug fix: restore errno in signal handlers
1056 * bug fix: fix deadlocks related to hash tables
1057 * bug fix: fix deadlocks in pcl
1059 changes in sbcl-1.0.25 relative to 1.0.24:
1060 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1061 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1062 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1063 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1064 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1065 better name and does not return values so stale on multiprocessor systems.
1066 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1068 * improvement: unithread builds keep track of MUTEX-VALUE.
1069 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1070 stream anymore making it thread safe to have a concurrent reader and
1071 a writer, for instance, in a pipe.
1072 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1073 arguments, making compiler-macros for SETF-functions able to inspect
1074 their constant arguments.
1075 * improvement: COMPILE-FILE reports times with millisecond accuracy
1076 (thanks to Luis Oliveira)
1077 * optimization: CHAR-CODE type derivation has been improved, making
1078 TYPEP elimination on subtypes of CHARACTER work better. (reported
1079 by Tobias Rittweiler, patch by Paul Khuong)
1080 * bug fix: setting alien structure fields of type struct by value now
1081 computes the right offset for the memory copy.
1082 * bug fix: compilation problem involving inlined calls to aliens with
1083 result type VOID. (reported by Ken Olum)
1084 * bug fix: #235a; sequential inline expasion in different policies no
1085 longer reuses the functional from the previous expansion site.
1086 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1087 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1088 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1089 cause an implied type redefinition. Regression from 1.0.21.29.
1090 * bug fix: sign-extension of small signed return values now works with C
1091 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1092 * improvements to the Windows port:
1093 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1094 Westfold, thanks to Rudi Schlatte)
1096 changes in sbcl-1.0.24 relative to 1.0.23:
1097 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1098 vector of a multidimensional SIMPLE-ARRAY.
1099 * new feature: the system now signals a continuable error if standard
1100 readtable modification is attempted. (thanks to Tobias Rittweiler)
1101 * new feature: DIRECTORY has been extended with a non-standard keyword
1102 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1103 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1104 has been robustified and documented better. (thanks to Robert Goldman)
1105 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1106 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1107 * tradeoff: constant FORMAT control strings are now compiled unless
1108 SPACE > SPEED (previously only when SPEED > SPACE.)
1109 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1111 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1113 * bug fix: lexical type declarations are now correctly reported by
1114 SB-CLTL2. (reported by Larry D'Anna)
1115 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1116 using UTF-8 as external format. (thanks to Luis Oliveira)
1117 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1118 are signalled correctly. (thanks to Stas Boukarev)
1119 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1120 designator. (thanks to Tobias Rittweiler)
1121 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1122 designator, and returns T instead of the function. (thanks to
1124 * bug fix: direct superclasses of STANDARD-CLASS and
1125 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1126 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1127 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1128 when no class with the named slot yet exists no longer causes a
1129 compile-time style-warning.
1130 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1131 in safe code. (reported by Didier Verna)
1132 * bug fix: #430; nested structure constructors can stack allocate.
1133 * bug fix: on some 64-bit platforms dynamic space size was truncated
1134 to #xffff0000 bytes. (reported by Benjamin Lambert)
1135 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1136 REPL unusable. (reported by Daniel Herring)
1137 * bug fix: return values of READ-SEQUENCE did not take :START into
1138 account on file streams, regressions since 1.0.12.22. (reported by
1139 Thomas Russ, patch by Paul Khuong)
1140 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1141 method specializer used to confuse permuation vector optimization.
1142 * bug fix: system inserted bogus implicit type declarations for local
1143 special variables in DEFMETHOD bodies.
1144 * bug fix: #354; duplicated frames in backtraces due to
1145 non-tail-call-optimized XEPs to functions with return type NIL
1147 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1148 initializes structure object slots according to DEFSTRUCT initforms,
1149 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1150 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1151 (reported by Bruno Haible and Stephen Wilson)
1152 * bug fix: #395; fill-pointer output streams used now support
1153 element-type BASE-CHAR as well.
1154 * bug fix: compiler error when attempting to derive return value of
1155 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1157 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1159 * bug fix: Mac OS X binaries should now be portable between Leopard
1162 changes in sbcl-1.0.23 relative to 1.0.22:
1163 * enhancement: when disassembling method functions, disassembly
1164 for the associated fast function is also produced.
1165 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1167 * optimization: printing with *PRINT-PRETTY* true is now more
1168 efficient as long as the object being printed doesn't require
1169 special handling by the pretty printer.
1170 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1171 now interact correctly with type declarations.
1172 * partial bug fix: PCL detects infinite recursion during wrapper
1173 validation. (thanks to Attila Lendvai)
1174 * bug fix: #426; nested function calls are inlined properly.
1175 Previously if FOO was an inline function, in calls of the form
1176 (FOO (FOO ...)) the outer call was not inlined.
1177 * bug fix: long long arguments passed in registers to alien
1178 functions on PowerPC Linux and NetBSD are now handled correctly
1179 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1181 changes in sbcl-1.0.22 relative to 1.0.21:
1182 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1183 for the shared object in the current directory, but passes the native
1184 namestring of the designated pathname to the operation system's shared
1185 object loading function as-it.
1186 * minor incompatible change: --disable-debugger toplevel option now takes
1187 effect before processing of initialization files and --eval or --load
1189 * new feature: new commandline argument: --script, which supports
1190 shebang lines. See documentation for details. (based on work by
1192 * new feature: SAVE-LISP-AND-DIE can save current values of
1193 --dynamic-space-size and --control-stack-size in the executable core,
1194 causing it to skip normal runtime option processing. See documentation
1195 for details. (thanks to Zach Beane)
1196 * enhancement: inoccous calls to EVAL or generic functions dispatching
1197 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1198 * enhancement: the system no longer resignals errors from --load and
1199 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1200 associated with the original error to be lost. (thanks to Ariel
1202 * enhancement: :DONT-SAVE keyword argument has been added to
1203 LOAD-SHARED-OBJECT for controlling interaction with
1204 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1205 the effects of an earlier LOAD-SHARED-OBJECT call.
1206 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1207 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1208 provided. (reported by Cedric St-Jean)
1209 * bug fix: circularity handling in the reader did not treat raw
1210 structure slots correctly. (reported by Cedric St-Jean)
1211 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1212 file descriptors when there were none.
1213 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1214 was broken. (reporteed by Willem Broekema)
1215 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1216 pathnames without a directory.
1217 * bug fix: COMPILE-FILE did not warn about undefined variable
1218 references at toplevel, and LOAD of the resulting fasl did
1219 not signal an error.
1220 * bug fix: functions with non-required arguments used to end up with
1221 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1222 * bug fix: redefining a function with non-required arguments didn't
1223 update the system's knowledge about its call signature properly.
1224 * bug fix: fixed #431; incompatible alien record type redefinitions
1225 are detected and handled. (reported by Neil Haven)
1226 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1227 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1229 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1230 after alien stack frames.
1231 * bug fix: strings passed to mk{s,d}temp lacked null termination
1233 changes in sbcl-1.0.21 relative to 1.0.20:
1234 * new feature: the compiler is able to track the effective type of a
1235 generic function across method addition and removal.
1236 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1237 appropriately typed structure slots without locking.
1238 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1239 information like those gathered by TIME using a programming-friendly
1241 * new feature: TIME reports time taken even if the form performs a
1242 non-local transfer of control.
1243 * enhancement: reduced conservativism on GENCGC platforms: on
1244 average 45% less pages pinned (measured from SBCL self build).
1245 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1246 mutate constant symbols or violate declaimed type of the symbol.
1247 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1248 sleeping on the semaphore in heavily contested semaphores.
1249 * bug fix: semaphores and condition variables were not interrupt
1251 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1252 owned by other threads anymore.
1253 * bug fix: FIND on lists called KEY outside the specified
1254 subsequence. (reported by budden)
1255 * bug fix: LOG doesn't use single-float intermediate results when
1256 given mixed integer and double-float arguments, leading to better
1257 precision. (reported by Bob Felts)
1258 * bug fix: LOG with base zero returned values of inconsistent type.
1260 changes in sbcl-1.0.20 relative to 1.0.19:
1261 * minor incompatible change: OPTIMIZE qualities
1262 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1263 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1264 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1265 * documentation: some slot access efficiency guidelines have been
1266 added to the user manual.
1267 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1268 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1269 as ASSOC and MEMEBER.
1270 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1271 to more efficient EQ-comparison versions more often.
1272 * optimization: enhanced derivation of DOLIST iteration variable type
1274 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1276 * optimization: runtime lookup of function definitions can be
1277 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1278 * optimization: compiler is able to derive the return type of
1279 (AREF (THE STRING X) Y) as being CHARACTER.
1280 * optimization: CLRHASH on empty hash-tables no longer does pointless
1281 work. (thanks to Alec Berryman)
1282 * optimization: REPLACE deftransforms don't punt when :START1 or
1284 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1285 no longer emits a code deletion note. (reported by Andrew
1287 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1288 functions with an odd number of &OPTIONAL arguments, a &REST
1289 argument, and one or more &KEY arguments at the call site.
1290 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1291 arguments appeared at call sites as well.
1292 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1293 READ-LINE &co can no longer read from them afterwards. (reported
1295 * bug fix: fixed #427: unused local aliens no longer cause compiler
1296 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1298 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1299 alien-stack leakage. (reported by Andy Hefner)
1300 * bug fix: PROGV signals an error when an attempt to violate declared
1301 type of a variable or bind a constant is made.
1302 * bug fix: SET signals an error when an attempt to violate declared
1303 type of a variable is made.
1304 * bug fix: restart computation during the execution of a restart
1305 test function no longer causes infinite recursion. (reported by
1307 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1308 signals an error. (thanks to Pierre Mai)
1309 * bug fix: EXPORT left symbol unexported in conflict situations.
1310 (thanks to Michael Weber)
1311 * bug fix: correctly handle name conflicts involving CL:NIL.
1312 (thanks to Michael Weber)
1313 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1314 conflicts arising from USEing package with conflicting symbols
1315 correctly. (thanks to Michael Weber)
1317 changes in sbcl-1.0.19 relative to 1.0.18:
1318 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1319 warnings that go otherwise unhandled will be muffled if they are
1320 of the type that's the value of this variable.
1321 * optimization: stack allocation is slightly more efficient on x86
1323 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1324 where a raw slot always is initialized using the initform whose
1325 type is not know sufficiently well a compile-time are now compiled
1326 correctly. (reported by John Morrison)
1327 * bug fix: compiler no longer makes erronous assumptions in the
1328 presence of non-foldable SATISFIES types.
1329 * bug fix: stack analysis missed cleanups of dynamic-extent
1330 arguments in non-let-converted calls to local functions.
1331 * improvements to the Windows port:
1332 ** adjusted address spaces for building on both Win32 and
1333 Win64. (thanks for John Connors)
1334 * fixed some bugs revealed by Paul Dietz' test suite:
1335 ** interval arithmetic during type derivation used inexact integer
1336 to single-float coercions.
1337 ** arithmetic operations involving large integers and single
1338 floats give the same results in compiled and interpreted code.
1339 ** deriving the result type of COERCE no longer signals an error
1340 if the derived type of the second argument is a MEMBER type
1341 containing invalid type specifiers.
1342 ** ADJOIN with constant NIL as second argument works correctly.
1343 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1345 changes in sbcl-1.0.18 relative to 1.0.17:
1346 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1347 profiles only the current thread.
1348 * minor incompatible change: changes to SYMBOL-VALUE of constants
1349 defined with DEFCONSTANT now signal an error.
1350 * enhancement: SB-SPROF now has support for wallclock profiling,
1351 and is also able to profile specific threads. REPORT output
1352 has also additional sorting options.
1353 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1355 * optimization: structure allocation has been improved
1356 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1357 ** out of line constructors are ~10% faster.
1358 ** inline constructors are ~15% faster.
1359 ** inline constructors are capable of dynamic extent allocation
1360 (generally on x86 and x86-64, in some cases on other platforms
1362 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1364 * optimization: file compiler is now able to coalesce non-circular
1365 lists, non-base strings, and bit-vectors. Additionally, constants
1366 are never referenced through SYMBOL-VALUE at runtime.
1367 * optimization: code defining methods on PRINT-OBJECT (and other
1368 generic functions in the COMMON-LISP package) now loads faster.
1369 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1371 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1372 fasl is now deleted. (reported by Attila Lendvai)
1373 * bug fix: READ-LINE always returned NIL for the last line in files.
1374 (reported by Yoshinori Tahara)
1375 * bug fix: more accurate disassembly annotations of foreign function
1376 calls. (thanks to Andy Hefner)
1377 * bug fix: trimming non-simple strings and non-string string
1378 designators when the there is nothing to trim works properly.
1379 (thanks to James Knight)
1380 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1381 (thanks to Travis Cross)
1382 * fixed some bugs revealed by Paul Dietz' test suite:
1383 ** NIL is a valid function name (regression at 1.0.13.38)
1384 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1385 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1386 fill pointers properly (regression at 1.0.12.23)
1387 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1388 displacement indices properly (regression at 1.0.12.23)
1390 changes in sbcl-1.0.17 relative to 1.0.16:
1391 * temporary regression: user code can no longer allocate closure
1392 variable storage on stack, due to bug 419 without explicitly
1393 requesting it. Please consult sbcl-devel for advice if you need to
1394 use this feature in the meanwhile.
1395 * new feature: runtime argument --control-stack-size can be used to
1396 adjust thread default control stack size.
1397 * enhancement: improved TIME output
1398 ** all times are reported using the measured accuracy (milliseconds
1399 for real and GC times, microseconds for everything else.)
1400 ** processor cycle counts on x86 and x86-64.
1401 ** interpreted forms are counted for both evaluator modes.
1402 ** number of lambdas converted by the compiler is reported.
1403 ** CPU percentage report (computed from real and total run time.)
1404 ** more comprehensive run time reporting, using a condenced format
1405 ** interperted form, lambda, and page fault counts are omitted
1407 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1409 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1410 * optimization: two argument forms of LAST are upto ~10% faster
1411 in normal SPEED policies.
1412 * optimization: NCONC no longer needs to heap cons its &REST list
1413 in normal SPEED policies.
1414 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1415 to Sidney Markowitz)
1416 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1417 regression since 1.0.9.1. (thanks to Eric Marsden)
1418 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1419 since 1.0.15.36. (thanks to Paul Khuong)
1420 * bug fix: LAST when always returned the whole list when given a bignum
1421 as the second argument.
1422 * bug fix: dynamic extent allocation of nested lists and vectors
1423 could leak to otherwise accessible parts.
1424 * bug fix: invalid optimization of heap-allocated alien variable
1426 * bug fix: fasl header checking is less vulnerable to different
1427 platform word lengths.
1428 * bug fix: more correct assembler syntax for GNU binutils
1429 2.18.50.0.4 support. (thanks to Marijn Schouten)
1430 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1432 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1433 declarations) successfully. (reported by Attila Lendvai)
1435 changes in sbcl-1.0.16 relative to 1.0.15:
1436 * minor incompatible change: revert the changes to sb-posix's error
1437 signaling added in 1.0.14.
1438 * minor incompatible change: change PROBE-FILE back to returning
1439 NIL whenever we can't get a truename, as was the case before 1.0.14.
1440 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1441 inherits from ERROR instead of just CONDITION.
1442 * new feature: SB-INTROSPECT can provide source locations for instances
1443 as well. (thanks to Tobias Rittweiler)
1444 * optimization: binding special variables now generates smaller code
1445 on threaded platforms.
1446 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1447 and cases where no :TEST is given but the compiler can infer that
1448 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1449 * optimization: better LOGNOT on fixnums.
1450 * optimization: modular arithmetic for a particular requested width
1451 is implemented using a tagged representation unless a better
1452 representation is available.
1453 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1454 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1455 for wellformedness and returns a specialized vector. (reported by
1456 Francois-Rene Rideau)
1457 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1458 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1459 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1460 unscheduling timer at the same time as another timer fires.
1461 * bug fix: don't reschedule timers for dead threads.
1462 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1463 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1464 bogus errors if select() was interrupted.
1465 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1467 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1468 * enhancement: cleaner backtraces for interactive interrupts, as
1469 well as other cases where the interesting frames used to be
1470 obscured by interrupt handling frames.
1471 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1472 now supported, and tracing a whole package using (TRACE "FOO") now
1473 traces SETF-functions as well.
1474 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1475 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1476 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1477 * unreadably printed representation of hash-tables now includes
1479 * bug fix: partially fixed #188: type propagation from assignments
1480 is now more efficient.
1481 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1482 'DOUBLE-FLOAT) are not flushable.
1483 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1484 full address of the object, and none of the tag bits.
1485 * bug fix: readably printing hash-tables now respects other printer
1486 control variables. (reported by Cedric St-Jean)
1487 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1488 keyword with MAKE-HASH-TABLE.
1489 * bug fix: export SB-POSIX:MKSTEMP.
1490 * bug fix: SORT was not interrupt safe.
1491 * bug fix: XREF accounts for the last node of each basic-block as
1493 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1494 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1495 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1496 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1497 create obsolete instances in the case of redefinition or
1498 obsoletion of a superclass. (thanks to Andy Hefner)
1499 * bug fix: Support for the Alpha architecture has been revived; it had
1500 suffered somewhat from lack of maintenance since sbcl-1.0.
1501 * improvements to the Windows port:
1502 ** The system detects the codepage to use at startup, instead of
1503 using the value from the saved core. (thanks to Kei Suzuki)
1505 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1506 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1507 (see documentation for details.)
1508 * revived support for OpenBSD (contributed by Josh Elsasser)
1509 * partially fixed bug #108: ROOM no longer suffers from occasional
1510 (AVER (SAP= CURRENT END)) failures.
1511 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1512 bodies no longer cause a WARNING to be signalled. (reported by
1514 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1515 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1516 the bug in TRUNCATE.) (reported by Michael Weber)
1517 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1518 no samples. (reported by Andy Hefner)
1519 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1520 no longer appear as (NIL ...) frames in backtraces.
1521 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1522 is now actually exported from SB-EXT as documented. (reported by
1524 * bug fix: sb-aclrepl now correctly understands how to inspect
1525 single-floats on 64-bit platforms where single-floats are not boxed.
1526 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1527 yet been finalized. (reported by Levente Meszaros)
1528 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1529 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1530 SBCL-specific optimize qualities.
1532 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1533 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1534 an executable in the search path, and does so in the child
1535 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1536 been removed; it can be found in the CVS history, for somebody who
1537 needs that search behavior (see the manual).
1538 * minor incompatible change: compiler policy re. weakening type
1539 checks has changed: now type checks are weakened only if SAFETY < 2
1541 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1542 unparsing of directory pathnames as files. Analogously,
1543 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1544 filename to parse into a directory pathname.
1545 * enhancement: implicit generic function creation now signals a
1546 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1547 users can bind handlers for and muffle around calls to LOAD.
1548 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1549 to be used (using the default stream external format), and allows
1550 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1551 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1552 strings and vectors whose element-type or simplicity is not fully
1553 known at compile-time.
1554 * optimization: STRING-TRIM and related functions no longer allocate
1555 a new string when no trimming needs to be performed. These functions
1556 are also faster than before when the input string has been declared
1558 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1559 * optimization: READ-LINE is significantly faster for files containing
1561 * optimization: non-open coded uses of character comparison operators
1562 (e.g. char=) no longer cons when called with more than one parameter
1563 on platforms supporting dynamic-extent allocation.
1564 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1565 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1566 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1568 * bug fix: some sequence functions elided bounds checking when
1570 * bug fix: too liberal weakening of union-type checks when SPEED >
1572 * bug fix: more bogus fixnum declarations in ROOM implementation
1575 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1576 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1577 :SYNCHRONIZED argument, which makes the hash-table safe for
1578 concurrent accesses (but not iteration.) See also:
1579 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1580 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1581 * optimization: CONCATENATE on strings is an order of magnitude faster
1582 in code compiled with (> SPEED SPACE).
1583 * optimization: SUBSEQ is ~50% faster on lists.
1584 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1585 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1586 END is smaller then START.
1587 * bug fix: SB-PROFILE will no longer report extra consing for nested
1588 calls to profiled functions.
1589 * bug fix: ROOM implementation had bogus fixnum declarations which
1590 could cause type-errors when calling ROOM on large images.
1591 * bug fix: if file compilation is aborted, the partial fasl is now
1592 deleted, and COMPILE-FILE returns NIL as the primary value.
1593 * bug fix: number of thread safety issues relating to SBCL's internal
1594 hash-table usage have been fixed.
1595 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1596 be returned from its body when the values were being returned
1597 using unknown-values return convection and the W-P-O was wrapped
1598 inside an UNWIND-PROTECT.
1599 * bug fix: sb-posix should now compile again under Windows, enabling
1600 slime to work again.
1602 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1603 * incompatible change: hash-table accessor functions are no longer
1604 automatically protected by locks. Concurrent accesses on the same hash-table
1605 from multiple threads can give inconsistent results or even corrupt the
1606 hash-table completely. Multi-threaded applications should do their own
1607 locking at the correct granularity. In the current implementation it is
1608 still safe to have multiple readers access the same table, but it's not
1609 guaranteed that this property will be maintained in future releases.
1610 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1611 and will signal an error at runtime.
1612 * enhancement: SB-THREAD package now exports a semaphore interface.
1613 * enhancement: CONS can now stack-allocate on x86 and
1614 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1616 * enhancement: nested lists can now be stack allocated on
1617 platforms providing stack allocation support.
1618 * enhancement: dynamic-extent support has been extended to support
1619 cases where there are multiple possible sources for the stack
1621 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1622 if the mutex is uncontested on Linux.
1623 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1624 as specified by the CLHS. (thanks to Tobias Rittweiler)
1625 * bug fix: NaN comparison now works on x86-64.
1626 * bug fix: CLOSE :ABORT T on a stream with pending output now
1628 * bug fix: instances of non-standard metaclasses using standard
1629 instance structure protocol sometimes missed the slot type checks
1631 * bug fix: known functions can be inlined in high-debug code.
1633 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1634 * minor incompatible change: the MSI installer on Windows no longer
1635 associates .lisp and .fasl files with the installed SBCL.
1636 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1637 on Windows. (thanks to Luis Oliviera)
1638 * new feature: SB-CLTL2 contrib module now implements
1639 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1640 * optimization: scavenging weak pointers is now more efficient,
1641 requiring O(1) instead of O(N) per weak pointer to identify
1642 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1643 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1644 method bodies using constant slot-names when the first argument is
1645 a specializer parameter for the method.
1646 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1647 names, when the class of the instance is a direct instance
1648 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1649 as slow as the constant slot-name case.)
1650 * optimization: member type construction is now O(N) instead
1652 * optimization: UNION and NUNION are now O(N+M) for large
1653 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1655 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1656 now more readable in environments like Slime which display it.
1657 (thanks to Tobias C. Rittweiler)
1658 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1659 was able to infer the correct argument type for the object on which
1660 the CAS operation was being performed.
1661 * bug fix: copy propagation interfered with parallel assignment
1662 semantics in local calls. (reported by Paul Khuong)
1663 * bug fix: the signed modular fixnum shift compiled to wrong code on
1664 x86 and x86-64. (spotted by a slight modification to some of
1667 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1668 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1669 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1670 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1672 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1673 and generic function now print the object identity for anonymous
1674 instances. (thanks to Attila Lendvai)
1675 * enhancement: as an extension to MOP, SBCL now supports SETF of
1676 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1677 (thanks to Attila Lendvai)
1678 * enhancement: sb-cover has an alternate annotation mode which puts
1679 the form annotations at the car of the form, instead of annotating
1680 it completely. The benefit of this mode is that it shows better
1681 which forms were instrumented by the compiler.
1682 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1683 by printer control variables. (reported by Dan Corkill)
1684 * bug fix: system leaked memory when delayed output was performed by
1685 the OS in smaller chunks then expected. (thanks to David Smith)
1686 * bug fix: system leaked memory when file streams were not closed
1688 * bug fix: large objects written to slow streams that were modified
1689 after the write could end up with the modified state written to
1690 the underlying file descriptor.
1691 * bug fix: multiple threads operating in parallel on the same stream
1692 could cause buffer-overflows.
1693 * bug fix: source location information is stored correctly
1694 (broken since 1.0.6). This bug would generally show up as the
1695 Slime debugger highlighting the wrong form when the sldb-show-source
1697 * bug fix: Branch forms are again annotated as branches in the sb-cover
1699 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1700 on x86-64. (reported by Gregory Vanuxem)
1701 * bug fix: EQUALP could return wrong results for structures with raw
1702 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1703 word). (reported by Vjacheslav Fyodorov)
1704 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1707 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1708 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1709 atomic compare-and-swap operations on threaded platforms.
1710 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1711 allows assigning a global minimum value to optimization qualities
1712 (overriding proclamations and declarations).
1713 * enhancement: closed over variables can be stack-allocated on x86
1715 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1717 * optimization: slot definition lookup is now O(1). This speeds up
1718 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1719 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1720 * optimization: ASSOC and MEMBER can now be open-coded for all
1721 combinations of keyword arguments when second argument is constant
1722 and SPEED >= SPACE. In other cases a specialized version is
1724 * bug fix: using obsoleted structure instances with TYPEP and
1725 generic functions now signals a sensible error.
1726 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1727 (reported by Kristoffer Kvello)
1728 * bug fix: backtrace construction is now more careful when making
1729 lisp-objects from pointers on the stack, to avoid creating bogus
1730 objects that can be seen by the GC.
1731 * bug fix: defaulting of values in contexts expecting more than 7
1732 variables now works on x86-64. (reported by Christopher Laux)
1733 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1735 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1736 as the property-list of a symbol.
1737 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1738 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1739 situations requested, are once again file-compileable. (reported
1742 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1743 * MOP improvement: support for user-defined subclasses of
1744 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1745 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1746 the expansion of DEFMETHOD, is responsible for generating a form
1747 which creates a list of specializers when evaluated. Additional
1748 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1749 debugging and introspective support.
1750 * minor incompatible change: the (unsupported) spinlock interface
1751 has changed: free spinlock now has the value NIL, and a held spinlock
1752 has the owning thread as its value.
1753 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1754 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1756 * enhancement: name of a socket-stream is now "a socket" instead of
1757 "a constant string".
1758 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1759 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1760 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1761 for generic functions. (Thanks to Tobias C. Rittweiler)
1762 * optimization: bignum printing speed has been improved by 20-40%
1763 (depending on the bignum size.)
1764 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1766 * bug fix: the cache used by the CLOS to store precomputed effective
1767 methods, slot offsets, and constant return values is now thread and
1769 * bug fix: generic function dispatch function updating is now thread
1770 and interrupt safe (in the sense that the known issues have been
1772 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1773 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1774 * bug fix: asdf systems with dependencies to the SB-POSIX or
1775 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1776 * bug fix: interrupt safety of applicable method computation has been
1779 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1780 * new contrib: sb-cover, an experimental code coverage tool, is included
1781 as a contrib module.
1782 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1783 significantly faster.
1784 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1785 produce more efficient code on x86-64 if the compiler can determine
1786 that (+ INDEX <constant>) does not require a bounds check and FOO
1787 has an element type at least 8 bits wide.
1788 * enhancement: a new, experimental synchronous timeout facility is
1789 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1790 * enhancement: when a symbol name conflict error arises, the
1791 conflicting symbols are always printed with a package prefix.
1792 (thanks to Kevin Reid)
1793 * enhancement: stepping is now once again supported on the SPARC and
1794 MIPS platforms. (It is also now more likely to work on CheneyGC
1796 * enhancement: sb-sprof can now also track and report accurate call
1798 * bug fixes: the treatment of non-standard subclasses of
1799 SB-MOP:SPECIALIZER is more correct.
1800 * incompatible change: PURIFY no longer copies the data from the
1801 dynamic space into the static and read-only spaces on platforms
1802 that use the generational garbage collector
1803 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1805 * bug fix: GC race condition occasionally resulting in crashes with
1806 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1808 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1810 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1811 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1812 * bug fix: an asynchronous interrupt could previously leave the
1813 system running with GC inhibited.
1814 * bug fix: a DECLARE form evaluated at top-level now causes an error
1815 rather than silently (or verbosely) returning NIL.
1816 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1817 result in a error being signalled due to source form lookup errors.
1818 (reported by Peter Graves)
1820 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1821 * incompatible change: removed writer methods for host-ent-name,
1822 host-ent-addresses -- changing the values did not update the DNS
1824 * minor incompatible change: changed experimental JOIN-THREAD interface
1825 * documentation: the manual now lists reader and writer methods
1826 in class slot documentation sections. (thanks to Richard M Kreuter)
1827 * documentation: unwinding from asyncronous events has been
1828 documented as unsafe.
1829 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1830 in multithreaded application code.
1831 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1832 platforms. (thanks to James Anderson for the optimization hint)
1833 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1835 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1836 variants no longer cons.
1837 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1838 their NOT- variants no longer cons.
1839 * optimization: EQUAL hash tables no longer use SXHASH for objects
1840 of all data types, but instead use an EQL hash for types for which
1841 EQUAL is the same as EQL.
1842 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1843 are significantly faster.
1844 * optimization: new STRING-OUTPUT-STREAM implementation is much
1845 faster for large outputs and conses 30% less on average.
1846 * enhancement: XREF information is now collected for references made
1847 to global variables using SYMBOL-VALUE and a constant argument.
1848 * enhancement: SIGINT now causes a specific condition
1849 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1850 * bug fix: FILE-POSITION used to signal an error in some cases where
1851 ANSI requires it to return NIL.
1852 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1853 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1854 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1856 * bug fix: bad type declaration in the CLOS implementation has
1857 been fixed. (reported by James Anderson)
1858 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1859 (thanks to Lutz Euler)
1860 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1861 required by the CLHS. (reported by Samium Gromoff)
1862 * bug fix: dead unbound variable references now signal an error.
1863 (reported by Marco Monteiro)
1864 * bug fix: / with an unused value was being deleted in safe code.
1865 (thanks to Marco Monteiro and Kevin Reid)
1866 * bug fix: number of characters that can be written onto a single
1867 line in a file is unlimited.
1868 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1869 been fixed by inhibiting interrupts for when GC is disabled.
1870 * bug fix: some interrupt safety issues with GETHASH, (SETF
1871 GETHASH), CLRHASH and REMHASH have been fixed.
1872 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1873 specifier no longer causes infinite recursion.
1874 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1875 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1876 * bug fix: an &environment argument with the correct variable information
1877 is passed to macros that are expanded during byte compilation.
1878 (reported by Samium Gromoff)
1879 * bug fix: a logic error was causing the hash function for bignums to
1880 have excessive amounts of collisions. (reported by Faré Rideau)
1881 * bug fix: modifying the contents of an array could change the return
1882 value of SXHASH on that array, which is only allowed for strings
1883 and bit vectors. (bug introduced in 0.9.16)
1884 * improvement: the x86-64/darwin port now passes all tests (except
1885 for the debugger tests) but should still be considered
1886 experimental until this is fixed.
1887 * improvement: a style-warning is signaled for CASE (etc) clauses with
1888 duplicate keys. (thanks to Kevin Reid)
1889 * improvement: macos/x86 and macos/x86-64 now use mach exception
1890 handlers for dealing with illegal instructions (for trapping and
1891 error handling) and memory protection violations (for GC).
1893 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1894 * new platform: experimental support for x86-64/darwin (MacOS).
1895 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1896 and getnameinfo sockets functions are used instead of gethostbyaddr
1897 and gethostbyname, on platforms where the newer functions are available.
1898 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1900 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1901 don't print the startup banner, but behave as if --noinform was passed
1902 as a command line argument. (thanks to Kevin Reid)
1903 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1904 * optimization: code using alien values with undeclared types is much faster.
1905 * optimization: the compiler is now able to open code SEARCH in more cases.
1906 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1907 * bug fix: using standardized COMMON-LISP special variables as loop
1908 variables no longer signals bogus package lock violations. (reported
1910 * bug fix: declaring local loop variables to be of a range-limited type
1911 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1912 (reported by Andras Simon)
1913 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1914 bugs remain on x86-64.)
1915 * bug fix: the #= and ## reader macros now interact reasonably with
1916 funcallable instances.
1917 * bug fix: type-checks for function arguments were compiled using the
1918 compiler policy settings of the wrong lexical environment (in 1.0.2
1920 * bug fix: SHADOW accepts characters as string designators, as required
1921 by the spec (thanks to Eric Marsden)
1922 * bug fix: fixed GC safety issues when foreign functions are called with
1923 non-base strings as arguments
1924 * bug fix: more consistent error output for fatal-compiler-warnings, like
1926 * bug fix: functions with proper names were showing up as NIL in
1927 backtraces (reported by Edi Weitz, regression in 1.0.2)
1929 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1930 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1931 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1932 produce more efficient code on the x86 if the compiler can determine
1933 that (+ INDEX <constant>) does not require a bounds check and FOO
1934 has an element type at least 8 bits wide.
1935 * bug fix: references to undefined variables are handled the same way
1936 in toplevel forms as in the normal compiler
1937 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1939 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1940 (thanks to Jon Buller)
1941 * improvement: faster compilation times for complex functions
1942 * improvement: added readlink support to SB-POSIX (thanks to Richard
1945 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1946 * improvement: experimental support for mach exception handling on
1947 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1949 * improvement: support for GBK external format.
1950 (thanks to Chun Tian (binghe))
1951 * improvement: the debugger now displays variables that have been closed
1952 over, in code compiled with (DEBUG 2) or higher
1953 * improvement: support for executable cores on NetBSD (thanks to
1955 * new feature: added a RESTART-FRAME debugger command
1956 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1957 be used to provide an implementation for FILE-POSITION on Gray streams
1958 (thanks to Eric Marsden)
1959 * new feature: add syslog, openlog and closelog support to SB-POSIX
1960 (thanks to Richard Kreuter)
1961 * optimization: the function call overhead in code compiled with
1962 a high DEBUG optimization setting is significantly
1963 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1964 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1965 (thanks to Tony Martinez)
1966 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1967 evaluated once (reported by Kevin Reid)
1968 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1969 works again (thanks to Kilian Sprotte)
1970 * bug fix: an error is signaled for tagbodies with duplicate tags
1971 (thanks to Stephen Wilson)
1972 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1973 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1974 stack frames from alien callbacks.
1975 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1976 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1977 65k pages (thanks to David Woodhouse)
1978 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1980 changes in sbcl-1.0.1 relative to sbcl-1.0:
1981 * new platform: FreeBSD/x86-64, including support for threading.
1982 * new feature: the compiler stores cross-referencing information
1983 about function calls (who-calls), macroexpansion (who-macroexpands)
1984 and special variables (who-binds, who-sets, who-references) for code
1985 compiled with (< SPACE 3). This information is available through the
1986 sb-introspect contrib.
1987 * new feature: users may subclass SEQUENCE, and have instances of
1988 these classes interoperate with standard Common Lisp functions if
1989 a number of methods are defined. (This feature is experimental
1990 and the interface subject to change based on feedback from SBCL
1991 users and the general community)
1992 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1993 x86/x86-64, rather than the previous fixed depth of 8
1994 * improvement: another pthread back-end of mutex "pthread-futex".
1995 * bug fix: non-ascii command-line arguments are processed correctly
1996 (thanks to Yaroslav Kavenchuk)
1997 * bug fix: non-required arguments were not passed correctly when a method
1998 defined using DEFMETHOD was called from a mop-generated method using
1999 CALL-NEXT-METHOD (reported by Pascal Costanza)
2000 * bug fix: recursion is now permitted in accessors through
2001 SLOT-UNBOUND. (reported by Pascal Costanza)
2002 * bug fix: an error was signaled at startup if the HOME environment
2003 variable was defined, but had an empty value (reported by Peter Van Eynde)
2004 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2005 signal a PROGRAM-ERROR, not a BUG.
2006 * bug fix: SB-POSIX:READDIR works when built with large file support.
2007 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2009 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2010 for better automatic indentation support. (thanks to Matt Pillsbury)
2011 * optimization: loading generic functions no longer takes O(n^2) time,
2012 proportional to the amount of methods in the generic function
2013 (reported by Todd Sabin and Jeremy Brown)
2014 * optimization: the FIND and POSITION family of sequence functions
2015 are significantly faster on arrays whose element types have been
2017 * improvements to the Windows port:
2018 ** Intermittent heap corruption problems have been fixed. (thanks
2019 to Alastair Bridgewater)
2020 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2022 ** Lisp is able to unwind foreign exception frames from alien
2023 callbacks. (thanks to Alastair Bridgewater)
2025 changes in sbcl-1.0 relative to sbcl-0.9.18:
2026 * improvement: experimental support for threading on FreeBSD/x86.
2027 (thanks to NIIMI Satoshi)
2028 * improvement: runtime option --dynamic-space-size can be used
2029 to set the size of the dynamic space reserved on startup.
2030 * improvement: floating point modes in effect are now saved in
2031 core, and restored on startup.
2032 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2033 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2034 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2035 threads are not running after *SAVE-HOOKS* have run.
2036 * improvement: writes to CLOS instance slots are type-checked in code
2037 compiled with (SAFETY 3)
2038 * improvement: floating-point exception handling on FreeBSD (thanks to
2040 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2041 (thanks to Zach Beane)
2042 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2044 * improvement: added support for the Shift-JIS external format.
2045 (contributed by NIIMI Satoshi)
2046 * improvement: callbacks are supported on Linux/PPC. (thanks to
2048 * bug fix: compiler bug triggered by a (non-standard) VALUES
2049 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2050 * bug fix: file compiler no longer confuses validated and already
2051 dumped structurres. (reported by Kaersten Poeck)
2052 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2053 fill-pointer signals a type-error as required. (thanks to
2055 * bug fix: disassemly of funcallable instances works.
2056 * bug fix: single stepping on PPC.
2057 * bug fix: fix thread-safety problems in the type system (generally
2058 manifesting as nonsensical errors like "STRING is a bad type specifier
2059 for sequences" or "The value 1 is not of type FIXNUM")
2060 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2061 (reported by Josip Gracin)
2062 * bug fix: an error is signaled for attempts to displace arrays with
2063 incompatible element types (thanks to Mario Mommer)
2064 * bug fix: more correct handling of wide characters in debug info
2065 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2066 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2067 and don't cause extra consing
2068 * optimization: MAP and MAP-INTO are significantly faster on vectors
2069 whose elements types have been declared.
2070 * Improvements to SB-SPROF:
2071 ** Support for allocation profiling
2072 ** Reduced profiling overhead, especially for long profiling runs
2073 * Improvements to the Windows port:
2074 ** floating point exceptions are now reported correctly.
2075 ** stack exhaustion detection works partially.
2076 ** more accurate GET-INTERNAL-REAL-TIME.
2077 ** better RUN-PROGRAM behaviour in case of errors in the child
2079 ** PROBE-FILE now simplifies pathnames correctly.
2080 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2081 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2082 1st 1970 (although time timezone data will be unreliable).
2083 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2085 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2086 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2087 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2089 * bug fix: two potential GC deadlocks affecting threaded builds.
2090 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2091 returns T (reported by Anton Kazennikov)
2092 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2093 with non-variable places
2094 * bug fix: remove a race condition in the setting of
2095 funcallable-instance functions, this should make threaded CLOS
2096 code more stable against memory faults.
2097 * bug fix: corruption of specials when unbinding is interrupted by an
2098 asynchronous unwind (reported by Hannu Koivisto)
2099 * improvement: the debugger will now also display local variables that
2100 are only used once, for code compiled with a DEBUG optimization quality
2103 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2104 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2105 * incompatible change: External-format support for FFI calls. The
2106 SB-ALIEN:C-STRING no longer implies an ASCII
2107 external-format. Instead the string is subject to external-format
2108 conversion. Additionally return values of type SB-ALIEN:C-STRING
2109 are by default of type (SIMPLE-ARRAY CHARACTER), not
2110 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2111 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2112 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2113 * incompatible change: SB-EXT package no longer contains the
2114 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2115 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2117 * incompatible change: the single-stepper is no longer available
2118 on Alpha, Mips and Sparc platforms.
2119 * minor incompatible change: the direct superclasses of
2120 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2121 not (STANDARD-OBJECT FUNCTION). This makes the
2122 class-precedence-lists of GENERIC-FUNCTION and
2123 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2125 * minor incompatible change: the default stream external format on
2126 non-unicode SBCL is no longer detected from the locale, but is always
2128 * new feature: Add a version of evaluator that uses an interpreter instead
2129 of the compiler. EVAL still uses the compiler by default, to switch it
2130 to use the interpreter, set the value of the variable
2131 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2132 * minor incompatible change: the single-stepper REPL has been merged
2133 with the normal debugger (see the "Stepping" heading of the debugger help
2134 for more details). The debugger command STEP will no longer switch
2135 to the single-stepper REPL.
2136 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2137 for a type now works.
2138 * bug fix: loading of default sysinit file works. (thanks to Leonid
2140 * bug fix: better detection of circularities in the file-compiler.
2141 (reported by Marco Monteiro)
2142 * bug fix: the CL pathname functions now work with files that have
2143 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2144 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2145 systems with Unix98 pty semantics.
2146 * bug fix: ASDF-INSTALL will now work with bsd tar.
2147 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2149 * bug fix: timers expiring in dead threads no longer cause a
2150 type-error (reported by Paul "Nonny Mouse").
2151 * bug fix: thanks to more lightweight single-stepper instrumentation,
2152 code compiled with (DEBUG 3) will compile and execute significantly faster,
2153 and will have more accurate type-inferencing than before
2154 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2155 whose bindings are modified
2156 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2157 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2158 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2159 CL:SOFTWARE-VERSION with proper version
2161 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2162 * feature: implemented the READER-METHOD-CLASS and
2163 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2164 as specified by AMOP.
2165 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2167 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2168 (thanks to Lutz Euler)
2169 * optimization: hashing of general arrays and vectors has been
2170 improved. (reported by Any Fingerhut)
2171 * enhancement: SB-INTROSPECT is now able to find definitions of
2172 profiled functions. (thanks to Troels Henriksen)
2173 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2174 as well, allowing compiler-macros for SETF-functions to expand.
2175 * enhancement: step-instrumentation no longer wraps known
2176 single-value functions with multiple-value context, allowing
2177 better type inference.
2178 * fixed bug #337: use of MAKE-METHOD in method combination now works
2179 even in the presence of user-defined method classes. (reported by
2180 Bruno Haible and Pascal Costanza)
2181 * fixed bug #339(c): if there are applicable methods not part of any
2182 long-form method-combination group, call INVALID-METHOD-ERROR.
2183 (reported by Bruno Haible)
2184 * fixed bug #361: the :FUNCTION initarg in the protocol for
2185 initialization of methods can now be used to override
2186 internally-produced optimized functions. (reported by Bruno
2188 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2189 system-provided lambda expression no longer cause warnings about
2190 unbound #:|pv-table| symbols.
2191 * bug fix: improved the handling of type declarations and the
2192 detection of violations for keyword arguments with non-constant
2194 * bug fix: potentially erronous calls to PATHNAME and
2195 MERGE-PATHNAMES were being flushed in some cases.
2196 (reported by Richard Kreuter)
2197 * bug fix: compiled calls to TYPEP were mishandling obsolete
2198 instances. (reported by James Bielman and Attila Lendvai)
2199 * bug fix: format strings with ~> without matching ~< no longer
2200 trigger an AVER, but signal an understandable error instead.
2201 (reported by Antonio Martinez)
2202 * bug fix: specifying an output-file without a pathname-type for
2203 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2204 of input-file instead of "fasl". (reported by Robert Dodier)
2205 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2206 (reported by James Y Knight).
2207 * bug fix: compiler-macros-function did not consider the environment
2208 argument for shadowing by local functions.
2209 * bug fix: compiler-macros expansion was inhibited by local INLINE
2211 * bug fix: inline expansions of known functions were subject to
2212 step-instrumentation in high debug policies, leading to problems
2213 with type-inference.
2214 * bug fix: compiler failed to differentiate between different CONS
2215 types in some cases.
2216 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2217 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2218 * bug fix: #368: incorrect use of expressed vs. upgraded array
2220 * bug fix: #306a: more precise unions of array types.
2221 * thread-safety improvements:
2222 ** CONDITION-WAIT could return early on Linux, if the thread was
2223 interrupted and subsequently continued with SIGCONT.
2224 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2226 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2227 * added support for the ucs-2 external format. (contributed by Ivan
2229 * minor incompatible change: pretty printing of objects of type
2230 (cons symbol) is, in the default pprint-dispatch-table, now
2231 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2233 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2234 called later in a class's lifetime, possibly as late as when the
2235 first instance of the class is created. Previously,
2236 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2237 class became finalizeable.
2238 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2239 for multibyte external-format streams. (thanks to "vbzoli")
2240 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2241 with :ALLOCATION :CLASS inherited from superclasses of the
2243 * fixed bug: anonymous classes can now be created using the :NAME
2244 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2245 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2246 * fixed bug: core-files saved with :EXECUTABLE T can again be
2247 executed when SBCL_HOME isn't set. (reported by James Knight)
2248 * fixed bug: toplevel LOCALLY forms with declarations could
2249 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2250 * fixed bug: printing from several different threads using different
2251 values of *print-case* could cause invalid output, due to
2252 some internal special variables of the printer not being bound
2253 thread-locally (reported by Max Mikhanosha)
2254 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2255 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2256 (reported by Pascal Costanza)
2257 * fixed bug: FINALIZE-INHERITANCE is called from
2258 REINITIALIZE-INSTANCE on classes when the class has previously
2259 been finalized, as required by AMOP.
2260 * minor code generation optimizations:
2261 ** better register allocation in CLOS dispatching functions
2262 ** overflow detection when coercing signed bytes to fixnums on x86-64
2263 ** is now implemented with one IMUL instruction instead of three shifts
2264 ** more efficient bit-vector access on x86 and x86-64
2265 ** more efficient access to raw structure slots on x86 and x86-64
2266 * fixed some bugs revealed by Paul Dietz' test suite:
2267 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2268 return its argument.
2270 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2271 * feature: thread support on Solaris/x86, and experimental thread support
2273 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2275 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2276 default method for SLOT-UNBOUND.
2277 * minor incompatible change: prevent the user from specializing the
2278 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2279 somewhat counter to the intent of the protocol, I (CSR) think, and
2280 additionally it just doesn't work in SBCL as currently
2281 implemented, thanks to optimizations (that are always valid for
2282 the other three SLOT-VALUEish functions, but not for the setter).
2283 * minor incompatible change: the :SB-LDB feature is now enabled by
2284 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2285 the low-level debugger.
2286 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2287 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2288 down to an SB-SYS:FD-STREAM, allowing direct communication in
2289 more cases. Temporary files and pipes are still used as a fallback
2291 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2292 on the non-reentrant C functions localtime(3) and gmtime(3).
2293 * bug fix: global optimization policy was not visible in LOCALLY and
2295 * bug fix: class objects can be used as specializers in methods.
2296 (reported by Pascal Costanza)
2297 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2298 with a type error. (reported by blitz_ on #lisp)
2299 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2300 failed with a type error. (reported by Pascal Bourguignon)
2301 * bug fix: merging pathnames against defaults with :DIRECTORY
2302 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2303 (reported by James Y Knight)
2304 * bug fix: saving large (>2GB) cores on x86-64 now works
2305 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2306 constant index and a (simple-array (signed-byte 32)) array
2307 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2308 error (patch by Robert J. Macomber)
2309 * feature: TIME now displays the amount of run-time spent in GC
2310 * bug fix: The debugger now does a better job of respecting
2311 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2312 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2313 workaround for bug 403.)
2314 * bug fix: floating point exception handling now works on FreeBSD
2315 (thanks to NIIMI Satoshi)
2316 * fixed some bugs revealed by Paul Dietz' test suite:
2317 ** MISC.641: LET-conversion were not supposed to work in late
2319 * improvements to the Win32/x86 port:
2320 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2321 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2323 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2324 * new feature: source path information is generated for macro-expansion
2325 errors for use in IDE's like Slime (thanks to Helmut Eller)
2326 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2327 * bug fix: compiler does not loop forever on an invalid type in
2329 * improvement: compilation of most CLOS applications is significantly
2331 * optimization: added a limited bytecode compiler for simple toplevel
2332 forms, speeding up compilation and FASL loading
2333 * bug fix: the statistical profiler now properly distinguishes anonymous
2336 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2337 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2338 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2339 into subclasses of the finalized class. Now user calls to
2340 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2341 system return before any subclasses are finalized.
2342 * minor incompatible change: The reader no longer ignores errors
2343 regarding non-existent packages in #+ and #- feature tests.
2344 * new feature: command line options --no-sysinit, --no-userinit to
2345 inhibit loading the corresponding init files
2346 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2347 for sending data through UDP sockets (thanks to François-René Rideau)
2348 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2349 error is signalled instead (thanks to François-René Rideau)
2350 * minor incompatible change: Error signalling behaviour of lexical
2351 operations violating package locks has changed slightly. Refer to
2352 documentation on package locks for details.
2353 * enhancement: EVAL can process IF-expressions without resorting to the
2355 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2356 constant-folded properly due to missing out-of-line functions.
2357 (reported by Mika Pihlajamäki)
2358 * bug fix: LISTEN sometimes returned T even in cases where no data was
2359 immediately available from the stream
2360 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2361 were reversed. (reported by Levente Mészáros)
2362 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2363 when given a vector displaced to an adjustable array. (reported
2365 * bug fix: derivation of float boundaries from numbers outside the
2366 appropriate float range (reported by John Wiseman)
2367 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2369 * bug fix: precomputing cache entries for generic functions with
2370 some subclasses of specializers as yet invalid does not attempt to
2371 fill a cache line with a negative offset. (reported by Levente
2373 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2374 allow condition class objects as arguments to DOCUMENTATION and
2375 (SETF DOCUMENTATION); only find and set documentation for
2376 structure names for the STRUCTURE doc-type. (suggested by Gary
2378 * improvements to the Win32/x86 port:
2379 ** (user-homedir-pathname) and default initialization file
2380 locations now know about the user's "Documents and Settings"
2381 directory (thanks to Yaroslav Kavenchuk)
2382 ** run-program is implemented (thanks to Mike Thomas)
2383 ** sockets support (thanks to Timothy Ritchey)
2384 ** better backtrace support (thanks to Alastair Bridgewater)
2385 ** sb-grovel supported
2386 ** asdf-install and sb-posix work somewhat
2387 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2388 * improvements to the Solaris/x86 port:
2389 ** works on Solaris 11/Solaris Express
2390 ** floating-point exception handling support
2391 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2392 * fixed some bugs revealed by Paul Dietz' test suite:
2393 ** REMOVE-METHOD returns its generic function argument even when
2394 the method is not one of the generic functions' methods.
2395 ** objects declared as MEMBER types can be admissible arguments to
2396 structure accessors.
2397 ** printing characters should simply be printed by the FORMAT ~:C
2399 ** compiler failure when compiling functions with hairy constant
2400 defaults for optional parameters.
2401 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2402 function, which is already optimized.
2404 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2405 * new platform: experimental support for SBCL x86/Darwin, including
2406 MacOS X 10.4.5 on Intel.
2407 * new feature: Unicode character names are now known to the system
2408 (through CHAR-NAME and NAME-CHAR).
2409 * new feature: the filesystem location of SBCL's core file is
2410 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2411 * minor incompatible change: the contrib modules SB-POSIX and
2412 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2413 this change is to make it easier to distribute
2414 location-independent binaries.
2415 * bug fix: as implied by AMOP, standardized classes no longer have
2416 slots named by external symbols of public packages. (reported by
2418 * optimization: calling functions via constant symbols -- as in
2419 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2420 via the function object as in (FUNCALL #'FOO).
2421 * optimization: on x86 and x86-64, the calling convention for the
2422 case of dealing with an unknown number of values has been altered
2423 to be friendlier to the prediction heuristics implemented,
2424 particularly with reference to CALL and RET pairing. (thanks to
2425 Alastair Bridgewater)
2426 * optimization: on x86, the code for access to thread-local symbol
2427 values and binding/unbinding of thread-local symbols is smaller.
2428 (thanks to Alastair Bridgewater)
2429 * enhancement: CONSTANTP is now able to determine constantness of
2430 more complex forms, including calls to constant-foldable standardized
2431 functions and some special forms beyond QUOTE.
2432 * fixed bug: occasional GC crashes on Solaris/x86
2433 * optimization: x86-64 supports stack allocation of results of simple
2434 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2435 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2436 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2437 (thanks to James Knight)
2438 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2439 by the standard (thanks to Stephen Compall)
2441 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2442 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2443 be used for bundling the runtime and the core file into one
2444 executable binary. This feature is not currently supported on all SBCL
2445 platforms. (thanks to James Bielman and NIIMI Satoshi)
2446 * new feature: a generational or ephemeral garbage collector is now
2447 the default on the PowerPC platform (both Linux and Darwin). The
2448 old Cheney (stop and copy) collector is a build-time option.
2449 (thanks to Cyrus Harmon, after Raymond Toy)
2450 * minor incompatible change: the method by which SBCL finds its
2451 contributed modules has changed; it no longer relies on symbolic
2452 links from an $SBCL_HOME/systems directory, but searches directly
2453 in the subdirectories of $SBCL_HOME.
2454 * enhancement: the dynamic heap size on the Linux/PPC platform is
2455 markedly larger, even using the older Cheney garbage collector.
2456 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2457 certain complicated string types. (reported by Gary King)
2458 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2459 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2460 * fixed bug: DOCUMENTATION on structures no longer signals an
2461 error if no structure type of the right name exists. (reported by
2463 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2464 applicable non-standard primary or :AROUND method on
2465 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2466 no longer cause unbound variable errors. (reported by Kevin Reid)
2467 * fixed bug: metacircle resolution in cases where methods have slots
2468 added before the slots from STANDARD-METHOD. (reported by Jean
2470 * fixed bug: the Power PC assembly code for calling into lisp
2471 sometimes computed its return address wrongly (depending on the
2472 15th bit of the address, fixed at link time). This used to
2473 manifest itself in a segmentation violation while building PCL.
2474 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2475 many others over the years)
2476 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2477 the stack pointer (treated as a signed integer) is negative.
2478 (thanks to Peter van Eynde)
2480 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2481 * new platform: experimental support for the Windows operating
2482 system has been added. (thanks to Alastair Bridgewater)
2483 * fixed several bugs in and robustified the PPC FFI (including
2484 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2485 * bug fix: allow non-simple string symbol names (reported by Paul
2487 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2489 * bug fix: saving a core corrupted callbacks on x86/x86-64
2490 * bug fix: closed a loophole in metacircularity detection and
2491 grounding in the PCL implementation of CLOS.
2492 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2493 (reported by tomppa on #lisp)
2494 * bug fix: clear the direction flag on Lisp -> C transitions, as
2495 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2496 (reported by Andrej Grozin and Hendrik Maryns)
2497 * optimization: major improvements to GC efficiency on GENCGC platforms
2498 * optimization: faster implementation of EQUAL
2499 * optimization: emit more efficient opcodes for some common
2500 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2501 * optimization: several other minor code-generation improvements on x86-64
2502 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2504 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2505 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2506 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2507 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2508 by ANSI as a generic function, and for consistency (SETF
2509 GENERIC-FUNCTION-NAME) is treated likewise.
2510 * fixed bug #233.b: make constraint propagation notice when a variable
2511 value is changed after it is referenced but before it is used
2512 * fixed bug #296: no more arbitrary behaviour from filenames with
2513 odd characters as --load arguments. (reported by Adam Warner)
2514 * fixed bug #390: :CHARACTER-SET pathname components now work as
2515 expected. (reported by Tim Daly Jr)
2516 * fixed bug #391: complicated :TYPE intersections in slot
2517 definitions no longer cause an error in PCL internals.
2518 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2519 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2520 returning the number of octets which would be written to the
2521 file-stream. (thanks to Robert J. Macomber)
2522 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2523 arguments to the internal stream functions. (thanks to David
2525 * bug fix: stack exhaustion is now handled on the x86/SunOS
2526 platform. (thanks to Daisuke Homma)
2527 * bug fix: more accurate ROOM results on GENCGC platforms
2528 * optimization: improved type inference for arithmetic-for
2529 index variables in LOOP
2530 * optimization: faster floating-point SQRT on x86-64
2531 * fixed some bugs revealed by Paul Dietz' test suite:
2532 ** DOCUMENTATION returns NIL instead of "" for method combinations
2533 that don't have a docstring
2535 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2536 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2537 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2538 therefore are not customizeable by user code (as seems to be at
2539 least permitted and maybe required by AMOP). As a consolation,
2540 however, the SBCL implementation of these functions now calls
2541 REINITIALIZE-INSTANCE as specified by AMOP.
2542 * bug fix: slot-definition documentation is propagated as per ANSI
2543 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2544 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2545 argument, as do eslotd initialization methods. (from Pascal
2546 Costanza's "Closer" project)
2547 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2548 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2550 * bug fix: it is now possible to have more than one subclass of
2551 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2552 (reported by Bruno Haible, Pascal Costanza and others)
2553 * bug fix: the dependent update protocol now works for generic
2554 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2555 and Pascal Costanza)
2556 * bug fix: condition-class instances corresponding to
2557 DEFINE-CONDITION forms are now created eagerly. (reported by
2558 Kalle Olavi Niemitalo on comp.lang.lisp)
2559 * bug fix: floating point printing is more accurate in some
2560 circumstances. (thanks to Simon Alexander)
2561 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2562 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2563 * bug fix: callbacks on OS X now preserve stack-alignment.
2564 (thanks to Cyrus Harmon)
2565 * enhancement: the x86-64 disassembler is much better at
2566 disassembling SSE instructions. (thanks to Lutz Euler)
2567 * enhancement: CHECK-TYPE on a variable now allows type-inference
2568 (thanks to Vincent Arkesteijn)
2569 * optimization: improved performance of EUC-JP external format.
2570 (thanks to NIIMI Satoshi)
2571 * optimization: performance improvements to IO on file streams of
2572 :ELEMENT-TYPE CHARACTER
2573 * optimization: much faster memory allocation on x86-64
2574 * optimization: faster garbage collections (latency and throughput)
2576 * optimization: faster bignum subtraction and division on x86 and x86-64
2577 (thanks to Lutz Euler)
2578 * optimization: more accurate type-inference for loops that use a
2579 floating point index variable or a negative step.
2581 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2582 * bug fix: add a workaround to SBCL looping infinitely at startup on
2583 Linux kernels with apparently buggy implementations of personality().
2584 (thanks to Svein Ove Aas)
2585 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2586 (thanks to David Lichteblau)
2587 * bug fix: local bindings shadow global symbol macros for
2588 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2589 * optimization: non-open coded uses of numeric comparison operators
2590 (e.g. >) no longer cons when called with more than one parameter
2591 on platforms supporting dynamic-extent allocation.
2592 * enhancement: saving cores with foreign code loaded is now supported
2593 on MIPS/Linux in addition to the previously supported platforms.
2594 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2595 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2596 * bug fix: division by zero in sb-sprof when no samples were collected
2597 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2598 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2599 (thanks to Alexander Kjeldaas)
2600 * new feature: ignoring the return values of destructive functions
2601 like NREVERSE signals a compile-time style-warning.
2602 (thanks to Kevin Reid)
2603 * new feature: the alignment of alien structure fields can be
2604 explicitly specified. (thanks to Cyrus Harmon)
2605 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2606 and dump core on SIGQUIT
2608 ** incompatible change: threads do not inherit values of specials
2609 from their parents (see manual)
2610 ** bug fix: threads stacks belonging to dead threads are freed by the
2611 next exiting thread, no need to gc to collect thread stacks anymore
2612 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2613 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2614 ** bug fix: dynamic variable and thread start related gc lossage
2615 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2617 * fixed some bugs revealed by Paul Dietz' test suite:
2618 ** SUBTYPEP is slightly more accurate on heinously complicated
2619 CONS types where some of the members have uncertain (in the
2620 NIL, NIL sense) type relationships to each other.
2622 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2623 no longer purified unless :PURIFY T is explicitly specified.
2624 ** Non-purified cores are significantly smaller than before
2626 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2627 * new feature: timers based on Zach Beane's excellent timer package
2628 * added support for the following external formats: koi8-u,
2629 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2630 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2631 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2632 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2633 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2634 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2635 * incompatible change: a threaded SBCL will no longer revert to
2636 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2637 * bug fix: interrupts are disabled until startup is complete; no
2638 more sigsegvs when receiving a signal to soon
2639 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2641 * bug fix: add a workaround for the memory randomization features in
2642 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2643 workaround will only be in effect on systems with the proc filesystem
2645 * bug fix: printing objects of type HASH-TABLE signals a
2646 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2648 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2649 have been running for over 50 days. (reported by Gilbert Baumann)
2650 * bug fix: the logic for getting names of functions gets less
2651 confused when confronded with alternate-metaclass
2652 funcallable-instances. (reported by Cyrus Harmon)
2653 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2654 consistent, even on internal alternate-metaclass objects.
2655 * bug fix: flush closure information collected by physical
2656 environment analysis prepass before the main pass. (bug reported
2658 * bug fix: compiler pack phase does not modify a hashtable, which is
2659 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2660 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2661 may be expanded. (reported by Alexander <malishev> on c.l.l)
2662 * bug fix: no more style-warnings when compiling code using LAST
2663 under high-SPEED low-SPACE settings. (reported by David Wallin
2665 * fixed some incompatibilities between SBCL's MOP and the MOP
2667 ** the METAOBJECT class is now implemented;
2668 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2669 STANDARD-OBJECT, as required;
2670 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2671 now compatible (as required by VALIDATE-SUPERCLASS); there
2672 remains a consistency requirement over the presence or absence
2673 of the FUNCTION class in the superclass list of finalized
2674 classes; see the manual for more details;
2675 ** the :AROUND method for COMPUTE-SLOTS on
2676 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2677 requested slot ordering.
2679 ** bug fix: parent thread now can be gc'ed even with a live
2681 ** bug fix: binding a special with PROGV to no value is not
2682 the same as that symbol not having been bound (thanks to
2684 ** bug fix: binding specials is thread safe (thanks to
2686 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2687 and SB-SPROF do not die with 'no handler for signal XX in
2688 interrupt_handle_now(..)' anymore
2689 ** bug fix: WITH-TIMEOUT works with multiple running threads
2690 * fixed some bugs revealed by Paul Dietz' test suite:
2691 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2692 the :method-class keyword argument.
2694 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2695 * new port: the Solaris operating system on x86 processors is now
2696 mostly supported, though some rough edges in the environment
2697 remain. (thanks to Daisuke Homma)
2698 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2699 space for its heap. (thanks to Thiemo Seufer)
2700 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2701 closures. (thanks to Thiemo Seufer)
2702 * minor incompatible change: eof selects abort in the debugger.
2703 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2704 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2706 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2707 deprecated, and will go away in a future revision of SBCL.
2708 * minor incompatible change: GC-ON and GC-OFF are no longer
2709 implemented with a counter, it does not matter how many times gc
2710 is switched on or off
2711 * bug fix: discriminating functions for generic function classes
2712 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2713 make invalid assumptions about method precedence order. (reported
2715 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2716 platforms. (thanks to Thiemo Seufer)
2717 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2718 * bug fix: correct pathname printing with printer escaping is on.
2719 (thanks to Kevin Reid)
2720 * bug fix: complex VOP definitions in "user-space" no longer trigger
2721 package locks. (reported by Zach Beane)
2722 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2723 for funcallable-instance functions, and is no different from
2725 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2726 characters in the current readtable. (reported by Nicholas Neuss)
2727 * bug fix: SUBTYPEP on various CONS types returns more a more
2728 accurate acknowledgment of its certainty.
2729 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2730 lists in some cases. This partially fixes bug 384.
2731 * flush all standard streams before prompting in the REPL and the
2733 * bug fix: signal handling and triggering gc do not conflict
2734 directly anymore, in particular a high frequency sb-sprof does
2735 not prevent gc from running
2736 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2737 approximation for timezone and DST information between the
2738 universal time epoch and the smallest negative 32-bit time_t.
2739 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2740 year 1899 so long as the encoded time is non-negative.
2741 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2742 the correct answer for non-constant rotate amounts when performing
2743 an inline 32-bit rotation.
2745 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2746 there is only one thread in the session
2747 ** bug fix: memory leak for streams created in one thread and
2748 written to in another
2749 ** bug fix: lockup when compiled with gcc4
2750 ** bug fix: race that allows the gc to be triggered when gc is
2752 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2753 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2755 ** bug fix: finished threads are gc'ed properly
2756 * fixed some bugs revealed by Paul Dietz' test suite:
2757 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2758 has arguments with a different set of applicable methods from
2759 the orignal arguments.
2760 ** The type error thrown by MAP now has a correct expected-type
2762 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2763 name a compiled function.
2764 ** Three MISC tests where a large bignum was improperly coerced to
2765 a float that couldn't represent that bignum during type
2766 derivation were fixed.
2767 ** SUBTYPEP can now handle types involving the negation of a
2768 list-form FUNCTION type.
2769 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2770 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2771 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2773 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2774 * New feature: Experimental support for bivalent streams: streams
2775 opened with :element-type :default now allow character and binary
2776 (unsigned-byte 8) I/O
2777 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2778 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2780 * bug fix: no more highly sporadic "couldn't check whether ~S is
2781 readable" when reading a stream and an interrupt hits in the middle
2782 of a select system call
2783 * compiler better recognizes complex arrays (reported by Eduardo
2785 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2786 for variables on SBCL built with linkage-tables. (reported by Luis
2788 * various error reporting improvements.
2789 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2790 (Thanks to Thiemo Seufer)
2791 * bug fix: nested reader invokations work correctly
2792 * bug fix: it is possible to have simultaneous references to foreign
2793 code and foreign data with the same name.
2795 ** added x86-64 support
2796 ** incompatible change: the threading api now works with thread
2797 objects instead of thread ids
2798 ** bug fix: threads are protected from signals and interruption when
2799 starting up or going down
2800 ** bug fix: a race where an exiting thread could lose its stack to gc
2801 ** bug fix: don't halt on infinite error in threads if possible
2802 ** fixed numerous gc deadlocks introduced in the pthread merge
2803 ** bug fix: fixed thread safety issues in read and print
2804 ** bug fix: debugger doesn't hang on session lock if interrupted at
2805 an inappropriate moment
2806 ** bug fix: run-program is now thread safe(r)
2807 ** bug fix: inner with-recursive-lock no longer releases the mutex
2808 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2809 * fixed some bugs revealed by Paul Dietz' test suite:
2810 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2811 EXPECTED-TYPE slots filled.
2812 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2814 ** MAKE-CONDITION accepts classes as type-designators.
2815 ** COMPILE may never return NIL.
2816 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2817 range before calling Unix time functions
2819 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2820 * numerous signal handling fixes to increase stability
2821 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2822 * minor incompatible change: we now correctly canonize default
2823 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2824 as per the MOP, rather than the historical (INITARG INITFUNCTION
2825 INITFORM). (reported by Bruno Haible)
2826 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2827 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2828 for more information.
2829 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2830 pathname is a directory pathname.
2831 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2832 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2834 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2835 :METACLASS argument in addition to a class name. (reported by
2836 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2837 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2838 (reported by Bruno Haible; patch from Gerd Moellmann)
2839 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2841 * bug fix: more cleanups to the floating point exception handling on
2842 x86-64 (thanks to James Knight)
2843 * bug fix: the compiler does not try to constant fold calls of
2844 COERCE and BIT-* functions when they return freshly constructed
2845 objects. (reported by Nikodemus Siivola and Paul Dietz)
2846 * optimization: improved the MIPS versions of generic (in the
2847 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2848 * optimization: direct conversion of (unsigned-byte 32) to floats on
2849 the PowerPC platform.
2850 * optimization: structure instances with raw slots now use less
2851 memory, and probably show better memory locality. (thanks to
2853 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2854 are treated as requests for stack allocation on the x86-64,
2855 Alpha-32, PPC and SPARC platforms.
2856 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2857 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2858 (thanks to Tony Martinez)
2860 ** gcing a dead thread can no longer lead to lockups
2861 ** threads block signals until they are set up properly
2862 ** errno is no longer shared by threads
2863 ** interrupt-thread restores the eflags register on x86
2864 ** fixed some lockups due to gc/thread interaction
2865 * fixed some bugs revealed by Paul Dietz' test suite:
2866 ** invalid dotted lists no longer raise a read error when
2867 *READ-SUPPRESS* is T
2868 ** signal an error if a symbol that names a declaration is used
2869 as the name of a type, or vice versa
2870 ** allow using the (declare (typespec var*)) abbreviation for
2871 (declare (type typespec var*)) with all type specifiers
2872 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2873 ** always return NIL from PPRINT-POP when OBJECT is NIL
2874 ** don't signal errors when pretty-printing malformed LABELS,
2875 FLET or MACROLET forms
2876 ** declarations in a DOLIST body are also in scope for the
2878 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2880 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2883 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2884 * fixed cross-compiler leakages that prevented building a 32-bit
2885 target with a 64-bit host compiler.
2886 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2887 opened with :IF-EXISTS :OVERWRITE.
2888 * fixed bug 281: error for an invalid qualifier in a short-form method
2889 combination method is not signalled until the faulty method is called.
2890 * bug fix: iteration variable type inferrer failed to deal with open
2891 intervals. (reported by Alan Shields)
2892 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2893 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2894 or more runtime options were provided to the sbcl binary.
2895 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2896 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2897 * optimization: there's now a fast-path for fixnum arguments in the
2898 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2899 * optimization: the code generated on x86-64 is more compact thanks
2900 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2901 * bug fix: floating-point exception handling now partly works on
2902 x86-64. (Thanks to James Knight)
2903 * improvement to the MIPS backend from Thiemo Seufer: C-style
2904 64-bit long long arguments and return values to alien functions
2906 * fixed some bugs revealed by Paul Dietz' test suite:
2907 ** the type-error signalled from WARN has a filled-in DATUM slot.
2908 ** the type-error required when a stream is not associated with
2909 a file has the stream as its datum.
2910 ** type-errors on single-floats on x86-64 no longer have
2911 :INVALID-OBJECT as the datum
2912 ** the type-errors signalled for invalid function names now have
2913 a correct expected type
2914 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2915 for structures defined with a :TYPE. Documentation strings for
2916 typed structures are no longer immediately discarded
2917 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2918 broadcast streams and synonym streams. FILE-LENGTH now also works
2919 on broadcast streams.
2921 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2922 * incompatible change: the --noprogrammer option, deprecated since
2923 version 0.7.5, has been removed. Please use the equivalent
2924 --disable-debugger option instead.
2925 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2927 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2928 inoperational for a while now) has been completely removed.
2929 * null lexical environments are now printed as #<NULL-LEXENV>,
2930 significantly reducing the amount of clutter in typical backtraces.
2931 * documentation on weak pointers, finalization, and after GC hooks
2932 has been added to the manual.
2933 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2934 as other specialized array types, is much faster. SUBSEQ and
2935 COPY-SEQ on such arrays have also been sped up.
2936 * optimization: EQL is now more efficient when at least other argument
2937 is known to be of type (OR FIXNUM (NOT NUMBER)).
2938 * fixed bug: the runtime is now less vulnerable to changes in the
2939 size of the SBCL object on OS X, and virtual memory is reserved for
2940 all spaces that need to be at a fixed address.
2941 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2942 * fixed bug: finalizers and after GC hooks that cause consing are now
2944 * fixed bug: compiler error messages and summaries are now printed to
2945 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2946 * fixed inference of the upper bound of an iteration variable.
2947 (reported by Rajat Datta).
2948 * fixed bug 211e: calling local functions with duplicated constant
2949 keyword argument no longer causes a bogus style warning about an
2951 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2952 ftype declaration to be disregarded. (reported by Dave Roberts)
2953 * fixed bug 373: caused by erronous compilation of references to alien
2954 variables in the runtime on ppc/darwin.
2955 * fixed bug 376: CONJUGATE type deriver.
2956 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2957 (reported by Baughn on #lisp)
2958 * a cross-compiler bug on non-x86 platforms has been identified and
2959 fixed. (thanks to Bruno Haible)
2960 * improvements to the MIPS runtime code for increased stability.
2961 (thanks to Thiemo Seufer)
2962 * increased the maximimum compact environment size to allow
2963 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2964 * partial workaround for bug 135: don't name the function we're
2965 calling for hairy cases of EVAL, so as not to accumulate one environment
2966 entry per call to EVAL. (reported by Kevin Reid)
2967 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2968 * optimization: type testing for non-vector arrays should be faster.
2969 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2971 * bug fix: setting 31st element of a bit vector to zero did not work
2973 * bug fix: redefining a class definition which failed due to a
2974 previous accessor / function clash now works (but see BUGS entry
2975 #380 for more problems in this area). (thanks to Zach Beane)
2976 * the long form of DEFINE-METHOD-COMBINATION disables method group
2977 checking when given a single method group with pattern *. (thanks
2979 * on x86 compiler supports stack allocation of results of simple
2980 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2981 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2982 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2983 * fixed some bugs related to Unicode integration:
2984 ** the restarts for recovering from input and output encoding
2985 errors only appear when there is in fact such an error to
2987 * fixed some bugs revealed by Paul Dietz' test suite:
2988 ** MISC.549 and similar: late transformation of unsafe type
2989 assertions into derived types caused unexpected code
2991 ** SCALE-FLOAT type deriver is less wrong.
2992 ** type derivers for EXP, LOG and similar functions compute result
2993 types for complex arguments better.
2994 ** (MISC.563) CONJUGATE type deriver works for very restricted
2996 ** out-of-line type testers for character strings are available.
2997 ** EQUAL compiler transform understands specialness of objects
2999 ** accessing double-floats stored on the stack now works on x86-64.
3000 ** debugger internals could sometimes create invalid lispobjs,
3001 resulting in GC crashes.
3002 ** MISC.548: type check weakening can convert required type into
3004 ** initialization forms for bindings are not in scope of free special
3007 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3008 * incompatible change: thread support for non-NPTL systems has
3009 been removed - locking is buggy and unreliable. A threaded
3010 SBCL build will now warn at startup and refuse to create
3011 new threads, unless futex support is detected in the kernel
3012 * incompatible change: the top level REPL now has only an ABORT
3013 restart associated with it, not TOPLEVEL and ABORT as it used to.
3014 TOP and TOPLEVEL are now available as debugger commands for
3015 returning to the top level.
3016 * incompatible change: forms evaluated in the REPL now use the
3017 global optimization policy.
3018 * incompatible change: user- and system-initialization files are
3019 no longer processed with LOAD, but by READ and EVAL; hence the
3020 global optimization policy, startup package, readtable, etc,
3022 * The .fasl file format number has been incremented because of
3023 various incompatible changes.
3024 * internal entry point details and argument counts no longer appear
3025 in backtraces unless explicitly requested by setting
3026 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3027 * built-in and standard functions no longer have names like "top
3028 level local call to FOO".
3029 * fixed bug 32: functions defined in non-null lexical environments
3030 now have more legible printed representation
3031 * fixed bug 33: functions defined in non-null lexical environemnts
3032 are now more amenable to inspection by INSPECT.
3033 * workaround for bug 354: XEPs no longer appear in backtraces unless
3034 explicitly requested.
3035 * fixed bug: receiving the signal which results from attempting to
3036 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3037 SIGBUS on other *BSDs) on architectures where the C stack is also
3038 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3039 to debugger confusion or wild instability. (reported by Cheuksan
3041 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3042 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3043 (reported by Lutz Euler)
3044 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3045 compiled code. (reported by Paul Dietz)
3046 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3047 specialized parameter to a method to something that is not TYPEP
3048 the specializer is now possible.
3049 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3050 face of package deletion.
3051 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3052 pathname. (reported by David Tolpin on c.l.l)
3053 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3054 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3055 STRING-STREAM and FILE-STREAM, respectively.
3056 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3057 than previously; in addition, its test suite is now run on build.
3058 (thanks to Luke Gorrie)
3059 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3060 * optimization: added a immediate representation for single-floats
3062 * fixed some bugs revealed by Paul Dietz' test suite:
3063 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3064 ** attempting to create a package with a colliding nickname causes
3065 correctable errors to be signalled.
3066 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3067 ** several x86-64 backend bugs related to sign-extension of immediate
3070 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3071 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3072 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3074 * fixed loading of multiply forward-referenced layouts.
3075 (thanks to Cheuksan Wang)
3076 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3077 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3078 (see COMPILE-FILE documentation for details of :PRINT option)
3079 * fixed bugs 19 and 317: fixed-format floating point printing is
3080 more accurate. This also fixes a bug reported by Adam Warner
3081 related to the ~@F format directive.
3082 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3084 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3085 dispatch table if the from-char is a dispatch macro character.
3086 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3087 by the wordsize no longer ignore the last word. (reported by Lutz
3089 * fixed bug in type checking of dynamic-extent variables. (reported
3091 * optimization: sequence traversal functions use their freedom to
3092 coerce function designators to functions.
3093 * optimization: code with many calls to CLOS methods specialized on
3094 CLOS classes has had redundant type checks removed.
3095 * optimization: added declarations to speed up operations that access
3096 the internal character database (for example STRING-UPCASE)
3097 * optimization: comparison operations between floats and sufficiently small
3098 fixnums no longer create extra rationals
3099 * fixed some bugs related to Unicode integration:
3100 ** portions of multibyte characters at the end of buffers for
3101 character-based file input are correctly transferred to the
3102 start of the buffer at the next read.
3103 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3104 passing it through to OPEN.
3105 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3106 argument given to internal calls to OPEN.
3107 ** the built-in comment readers (introduced by character sequences
3108 ";" and "#|") are more forgiving to encoding errors; they will
3109 STYLE-WARN and then attempt to resync the stream at a character
3110 boundary. (thanks to Teemu Kalvas)
3111 * fixed some bugs in the x86-64 port:
3112 ** Negative short int return values from c-calls are sign-extended
3114 ** The stack is aligned to 16-bytes for c-calls, as required by
3115 the ABI. (thanks to Cheuksan Wang)
3116 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3117 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3118 for enums. (thanks to Vincent Arkesteijn)
3119 ** Multiple small optimizations and bugfixes for floating point
3121 * fixed some bugs revealed by Paul Dietz' test suite:
3122 ** Space, Tab, Linefeed, Return and Page have the invalid
3123 secondary constituent character trait.
3124 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3126 ** WITH-INPUT-FROM-STRING should only update the index place on
3128 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3129 works more reliably.
3130 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3131 with one-dimensional arrays with fill pointers.
3132 ** TYPE-OF failed on a complex with an integer realpart and a
3134 ** compiler failure during type inference for the code of form
3135 (IF (EQL X (THE ...)) ...) (MISC.535).
3137 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3138 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3139 platform. The port supports 61-bit fixnums, large memory spaces
3140 and reloading shared object files.
3141 * enhancement: saving cores with foreign code loaded is now
3142 supported on ppc/Darwin in addition to the previously supported
3144 * enhancement: the statistical profiler now walks deeper into the
3145 call stack for more meaningful call-graphs and accrued time
3146 reports (x86/x86-64 only). It also now reports time spent in
3148 * enhancement: it is now possible to trace most individual methods
3149 of a generic function in addition to tracing the generic function
3151 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3153 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3154 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3155 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3156 produces an error. (thanks to Vincent Arkesteijn)
3157 * bug fix: NAMESTRING on pathnames with :WILD components in their
3158 directories works correctly. (thanks to Artem V. Andreev)
3159 * fixed bug 125: compiler preserves identity of closures. (reported
3161 * bug fixed: functions with &REST arguments sometimes failed with
3162 "Undefined function" when compiled with (DEBUG 3). (reported by
3164 * bug fix: overflow during compiling of setting element of a bit
3165 vector with constant index and value. (reported by Timmy Douglas)
3166 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3167 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3168 * on x86 compiler partially supports stack allocation of dynamic-extent
3170 * GO and RETURN-FROM do not check the extent of their exit points
3171 when compiled with SAFETY 0.
3172 * fixed some bugs related to Unicode integration:
3173 ** encoding and decoding errors are now much more robustly
3174 handled; it should now be possible to recover even from invalid
3175 input or output to the terminal. (thanks to Teemu Kalvas)
3176 ** provided a first cut at implementing STRING-TO-OCTETS and
3177 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3178 ** altered the SB-MD5 contributed module slightly, changing the
3179 interface just enough for it to be supportable for builds where
3180 lisp characters are not eight bits.
3181 * fixed some bugs revealed by Paul Dietz' test suite:
3182 ** the FORMATTER-generated functions for ~V[ conditionals require
3183 the correct number of arguments.
3184 ** READ-FROM-STRING returns the mandated second value when applied
3185 to displaced strings.
3186 ** the #\Rubout and #\Backspace characters are treated as invalid
3187 constituent characters by the tokenizer.
3189 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3190 * new feature: reloading changed shared object files with
3191 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3192 * new feature: references to foreign variables and functions
3193 can now be compiled and loaded before the corresponding shared
3194 object file is loaded, as long as the foreign definitions are
3195 available at runtime.
3196 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3197 supported. (thanks to Dan Debertin)
3198 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3199 just keywords. (thanks to Vincent Arkesteijn)
3200 * fixed bug #331: structure-class instances corresponding to
3201 DEFSTRUCT forms are now created eagerly.
3202 * fixed bug #345: backtraces from calls to undefined functions work
3203 on x86 as well. Related bug #61 is now also partially fixed on x86
3204 (backtraces from throws to unknown catch tags.)
3205 * bug fix: lambda-list parsing is now stricter vrt. order and number
3206 of lambda-list keywords.
3207 * bug fix: as specified by AMOP, an error is signalled if a
3208 class-option appears multiple times in a DEFCLASS form. (reported
3210 * bug fix: RANDOM can be compiled when the compiler derives the type
3211 of its numeric argument as a disjoint set of small integers.
3212 (reported by Paul Dietz)
3213 * bug fix: starting a core saved with shared objects loaded when
3214 those objects are not available no longer causes threaded SBCL to
3215 hang. (reported by Sean Ross)
3216 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3218 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3219 argument, which must always be NIL. (reported by Kalle Niemitalo)
3220 * bug fix: printing 1.0d+23 no longer results in an error.
3221 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3222 * bug fix: structure slot setters preserve evaluation order. (thanks
3224 * fixed some bugs related to Unicode integration:
3225 ** RUN-PROGRAM can allow its child to take input from a Lisp
3226 stream. (reported by Stefan Scholl)
3227 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3228 locales. (reported by Ken Causey)
3229 * fixed some bugs revealed by Paul Dietz' test suite:
3230 ** INCF, DECF and REMF evaluate their place form as specified in
3232 ** FORMATTER expands ~{ ~} iteration directives with V or #
3233 parameters correctly.
3234 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3235 consequent uses no arguments correctly.
3236 ** the system has a partial understanding of the (COMPLEX RATIO)
3238 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3241 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3242 * new feature: a build-time option (controlled by the :SB-UNICODE
3243 keyword feature, enabled by default) for building the system with
3244 support for the entire 21-bit character space defined by the
3246 * new feature: the system now has rudimentary external-format
3247 support; the primary user-visible change at this time is that
3248 characters with the high bit set (such as lower-case-e-acute) will
3249 print correctly to a terminal in a UTF-8 environment.
3250 * minor incompatible change: BASE-CHAR no longer names a class;
3251 however, CHARACTER continues to do so, as required by ANSI.
3252 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3253 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3254 has been moved to the SB-EXT package (temporarily re-exported from
3256 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3257 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3259 * fixed bug #351: better error-handlind and reporting for malformed
3261 * fixed bug #350: bignum-printing is now more memory-efficient,
3262 allowing printing of very large bignums, eg. (expt 2 10000000).
3263 (reported by Bruno Haible)
3264 * fixed bug #302: better primitive-type selection for intersection
3266 * fixed bug #308: non-graphic characters now all have names, as
3267 required. (reported by Bruno Haible)
3268 * bug fix: redefining a class with different superclasses now correctly
3269 removes it from the direct-subclasses of its previous superclasses.
3270 (reported by David Morse)
3271 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3272 new value now works. (reported by Bruno Haible)
3273 * bug fix: correct canonicalization of multiple non-standard slot
3274 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3275 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3276 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3277 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3278 now exists, an signals an error.
3279 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3280 during macroexpansion for non-iteration variables as well. (reported
3281 by Bruno Haible for CMUCL)
3282 * bug fix: Cyclic structures and unprintable objects in compiler
3283 messages no longer cause errors. (reported by Bruno Haible)
3284 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3285 and READ-FROM-STRING all now return a primary value of NIL if
3286 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3287 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3288 (reported by Bruno Haible for CMUCL)
3289 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3290 do not designate a condition. (reported by Bruno Haible for
3292 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3293 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3294 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3295 permitting resolution in favour of any of the conflicting symbols.
3296 (reported by Bruno Haible for CMUCL)
3297 * bug fix: EQUAL compiler optimizations is less aggressive on
3298 strings which can potentially compare true despite having distinct
3299 specialized array element types.
3300 * bug fix: unit enumerations can be defined without dividing by
3301 zero. (thanks to Vincent Arkesteijn)
3302 * FORMAT compile-time argument count checking has been enhanced.
3303 (report from Bruno Haible for CMUCL)
3304 * a partial workaround for the bug 262: the compiler does not try to
3305 inline-expand a local function doing RETURN-FROM from a deleted
3306 BLOCK. (thanks to Peter Denno for the bug report and to David
3307 Wragg for the simple test case)
3308 * fixed some bugs revealed by Paul Dietz' test suite:
3309 ** RENAME-PACKAGE allows all package designators as new package
3311 ** constraint propagation and lambda variable substitution are
3312 more cautious in dealing with partially deleted code.
3313 ** compiler sometimes lost reoptimization passes.
3314 ** CERROR, given a condition as condition designator, passes its
3315 remaining arguments to the continue format control without
3317 ** Case-altering FORMAT directives work correctly on non-ASCII
3319 ** The REAL type specifier handles bounds outside the floating
3320 point ranges without signalling FLOATING-POINT-OVERFLOW.
3321 ** Functions with IR1-transformations can create intercomponent
3322 references to global functions.
3323 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3325 ** FORMAT ~R treats a nil value for its first parameter correctly.
3327 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3328 * enhancement: saving cores with foreign code loaded is now
3329 supported on x86/NetBSD and sparc/Linux in addition to the previously
3330 supported platforms.
3331 * bug fix: on some platforms repeated installations caused multiple
3332 copies of HTML documentation to be installed -- should not happen
3333 any more. (reported by Stefan Scholl)
3334 * bug fix: parsing self-recursive alien record types multiple times
3335 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3336 original patch by Helmut Eller for CMUCL)
3337 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3338 (thanks to Richard Kreuter)
3339 * bug fix: defining classes whose accessors are methods on existing
3340 generic functions in other (locked) packages no longer signals
3341 bogus package lock violations. (reported by François-René Rideau)
3342 * bug fix: special variables as DEFMETHOD parameters no longer have
3343 associated bogus type declarations. (reported by David Wragg and
3345 * bug fix: read-write consistency on streams of element-type
3346 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3347 * bug fix: redefiniton of the only method of a generic function with
3348 no DEFGENERIC no longer emits a full WARNING. In addition,
3349 redefinition of generic functions with no DEFGENERIC to an
3350 incompatible lambda list now signals an error. (thanks to Zach
3352 * bug fix: DEFGENERIC now works even when there's a function of the
3353 same name in an enclosing lexical environment. (thanks to Zach
3355 * fixed compiler failure, caused by instrumenting code during
3356 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3357 * optimization: added loop analysis and improved register allocation
3358 * fixed some bugs revealed by Paul Dietz' test suite:
3359 ** POSITION on displaced vectors with non-zero displacement
3360 returns the right answer.
3361 ** (SIMPLE-STRING) is a valid type specifier for sequence
3363 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3365 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3366 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3368 ** The justification version of the FORMAT ~< directive treats
3369 non-zero minpad parameter correctly.
3371 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3372 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3373 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3374 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3375 the supported interface.
3376 * new feature: Single-stepping of code compiled with DEBUG 2 or
3377 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3378 * new feature: saving cores with foreign code loaded is now
3379 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3380 Timothy Moore's work for CMUCL)
3381 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3382 parameters to * instead of NIL if no initform is supplied.
3383 (reported by Johan Bockgaard)
3384 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3385 correctly when FUNCALL appears as the car of the form. Note:
3386 despite this FUNCALL forms are not currently subject to
3387 compiler-macro expansion. (port of Raymond Toy's fix for the
3388 same from CMUCL, reported by Johan Bockgaard)
3389 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3390 (thanks for Teemu Kalvas)
3391 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3392 case instead of terminating the iteration (thanks for Julian
3393 Squires, Sean Champ and Raymond Toy)
3394 * bug fix: incorrect expansion of defgeneric that caused a style
3395 warning. (thanks for Zach Beane)
3396 * bug fix: slot accessor effective method computation works properly
3397 for classes with multiple non-standard applicable methods on
3398 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3399 * on x86 compiler supports stack allocation of results of LIST and
3400 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3401 CMUCL implementation by Gerd Moellmann)
3402 * fixed some bugs revealed by Paul Dietz' test suite:
3403 ** FORMAT strings with both the ~<~:;~> form of the justification
3404 directive and pretty-printing directives cause an error.
3406 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3407 * incompatible change: the internal functions
3408 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3409 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3410 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3411 instead of the old functions.
3412 * new feature: on platforms where "dladdr" is available foreign
3413 function names now appear in backtraces. (based on Helmut Eller's
3415 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3416 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3418 * documentation: ASDF manual is now distributed with SBCL.
3419 * bug fix: SBCL can now load its contributed modules with REQUIRE
3420 even if the system-provided entries have been removed from
3421 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3423 * bug fix: backtraces involving undefined functions or assembly
3424 routines are more informative. (thanks to Brian Downing)
3425 * bug fix: mutually referent alien structures now work correctly.
3426 (reported by Rick Taube)
3427 * bug fix: structures defined by WITH-ALIEN can be referred to
3428 within other definitions in the same WITH-ALIEN.
3429 * bug fix: division operators (MOD, TRUNCATE and the like) with
3430 constant zero divisors and integer dividends no longer generate
3432 * bug fix: provide default methods for INPUT-STREAM-P and
3433 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3434 * bug fix: improve the detection and resolution of MOP metacycles
3435 (where effective method computation depends on the generic function
3436 having its effective method computed). (reported by Bruno Haible)
3437 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3438 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3439 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3440 * bug fix: pathnames with relative directory components can be
3441 represented relative to default pathnames.
3442 * optimization: in taking the GCD of bignums, reduce the two bignums
3443 to approximately the same size (using Euclid's algorithm) before
3444 applying the more sophisticated binary GCD. (thanks to Juho
3446 * optimization: COUNT on bitvectors now operates word-at-a-time.
3447 * optimization: ASH with a positive, but not necessarily constant,
3448 (leftwards) shift, when in a modular context, is compiled to a
3450 * fixed some bugs revealed by Paul Dietz' test suite:
3451 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3452 if the corresponding argument is NIL.
3453 ** FORMAT directives accepting a minpad parameter treat negative
3455 ** literal commas as character parameters to FORMAT directives are
3457 ** literal spaces directly after ~<Newline> directives within a
3458 format-logical-block (~:< ~@:>) do not induce :FILL-style
3459 conditional newlines.
3460 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3461 as specified: it no longer includes conditional newlines).
3462 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3464 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3465 :PER-LINE-PREFIX argument does not evaluate to a string.
3467 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3468 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3469 the manual for details; for now, package locks can be disabled by
3470 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3471 if no major problems are found then it is likely that they will be
3472 compiled in unconditionally.
3473 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3474 unsupported operators on all platforms. To load a shared library
3475 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3476 object file, link it into a shared library outside of SBCL and
3477 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3479 * bug workaround: ROOM T and the GC were not working together
3480 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3481 reporting facility aren't preserved. That reporting has been
3482 disabled, so now until and unless someone figures out how to make it
3483 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3484 * minor incompatible change: as threatened around sbcl-0.8.0, the
3485 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3486 The symbols are also exported from SB-PCL for backwards
3487 compatibility, but more so than before SB-PCL should be treated as
3488 an implementation-internal package.
3489 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3491 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3492 It is known as of this release not to work on the Alpha, however.
3493 * fixed bug #167: errors signalled due to illegal syntax in method
3494 bodies are now more legible.
3495 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3496 designators and can hence be used with TYPEP.
3497 * fixed bug #333: CHECK-TYPE now ensures that the type error
3498 signalled, if any, has the right object to be accessed by
3499 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3500 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3501 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3503 * fixed bug #334: programmatic addition of slots using specialized
3504 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3505 and :ALLOCATION :CLASS slots.
3506 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3507 float exponents. (rereported by Peter Seibel)
3508 * fixed a bug: #\Space (and other whitespace characters) are no
3509 longer considered to be macro characters in standard syntax by
3510 GET-MACRO-CHARACTER.
3511 * fixed bug: initialization of condition class metaobjects no longer
3512 causes an instance of the condition to be created. (reported by
3514 * fixed bug: it is now possible to have slots such that
3515 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3516 description is neither :INSTANCE nor :CLASS.
3517 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3518 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3519 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3520 non-standard SLOT-DEFINITION-ALLOCATION values.
3521 * fixed bugs: various race conditions handling exiting threads.
3522 CL-PPCRE's thread torture test now passes.
3523 * fixed arguably-a-bug: GC time proportional to number of threads in
3524 system even when most of them are idle
3525 * optimization: improved performance of BIT and SBIT on bit-vectors.
3526 * .fasl file incompatibility: The fasl file version number has
3527 been incremented because of changes associated with package locks.
3529 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3530 * minor incompatible change: the system no longer provides
3531 optimization hints (conditions which are TYPEP
3532 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3533 mode; these hints are still emitted when higher SPEED optimization
3535 * new contrib module: a sampling profiler (profiling by statistical
3536 sampling, rather than by instrumenting functions) is available as
3537 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3538 * the behaviour of the standard function ED is now customizeable by
3539 third parties through a hook variable: see ED's documentation
3540 string for information on the protocol.
3541 * the compiler no longer emits efficiency notes for (FUNCALL X)
3542 when the type of X is uncertain under default optimization
3544 * fixed bug 276: mutating a binding of a specialized parameter to a
3545 method to something that is not TYPEP the specializer is now
3547 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3548 exhibit the required behaviour on the x86 platform. (thanks to
3549 Peter van Eynde, Eric Marsden and Bruno Haible)
3550 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3551 even for difficult arguments. (reported by Peter Graves)
3552 * fixed bug 141a: the backquote printer now descends quoted
3554 * fixed another bug in backquote printing: no more destructive
3555 modification of the form's list structure. (reported by Brian
3557 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3558 move between its address being taken and the call to
3559 interrupt_thread, fixing a crashing race condition.
3560 * the SB-POSIX contrib implementation has been adjusted so that it
3561 no longer exhibits ridiculously poor performance when constructing
3562 instances corresponding to C structs.
3564 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3565 * minor incompatible change: the sb-grovel contrib now treats C
3566 structures as alien (in the sense of SB-ALIEN) objects rather than
3567 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3568 has implications for memory management of client code
3569 (sb-grovel-returned objects must now be manually managed) and for
3570 type safety (alien objects now have full types).
3571 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3572 used to control emission of compiler diagnostics, rather than the
3573 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3574 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3575 quality should be considered deprecated.
3576 * install.sh now installs the user manual as well
3577 * (not quite a new documentable feature, but worth considering in
3578 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3579 beginnings of a semantically meaningful condition hierarchy is
3580 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3582 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3583 designator as the defaults argument.
3584 * fixed bug: Displaced arrays whose displaced-to array has become
3585 too small now cause ARRAY-DIMENSION to signal an error, providing
3586 for safer bounds-checking. (reported by Bruno Haible)
3587 * fixed bug: DEFCLASS slot definitions with identical :READER and
3588 :WRITER names now signal a reasonable error. (reported by Thomas
3590 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3592 * fixed bug: Invalid slot specification errors now print correctly.
3593 (thanks to Zach Beane)
3594 * fixed bug 320: Shared to local slot value transfers in class
3595 redefinitions now happen corrently from superclasses as
3596 well. (reported by Bruno Haible)
3597 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3599 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3600 improper lists correctly. (reported by Bruno Haible)
3601 * fixed bug 313: source-transform for <fun-name> was erroneously
3602 applied to a call of a value of a variable with name <fun-name>.
3603 (reported by Antonio Menezes Leitao)
3604 * fixed bug 307: The obsolete instance protocol ensures that
3605 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3606 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3607 remove dead unknown-values globs from the middle of the stack.
3608 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3609 easier to resume long computations after using *BREAK-ON-SIGNALS*
3610 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3611 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3612 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3613 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3614 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3615 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3617 * fixed a (fairly theoretical) bug in string printing: if
3618 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3619 does not have array-element-type equal to the most general string
3621 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3622 function name. (thanks to Nikodemus Siivola)
3623 * fixed bug: compile-time format string checker failed on
3624 non-closed ~{. (reported by Thomas F Burdick)
3625 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3626 don't warn on legal loop code involving more than one aggregate
3627 boolean. (thanks to Nikodemus Siivola)
3628 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3629 in keyword position to MAKE-PACKAGE was not being reported as
3631 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3632 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3634 * fixed bugs 280 and 312: the checking for multiple definitions in a
3635 file is less likely to become confused by uses of inline
3637 * fixed bug: the #S reader macro performs the keyword coercion
3638 specified for slot names. (reported by Kalle Niemitalo)
3639 * fixed bug: lambda lists may contain symbols whose names start with
3640 & but are not lambda-list-keywords; their occurrence triggers a
3642 * fixed bug 321: define-method-combination argument lambda lists do
3643 not cause invalid code to be generated when &optional or &aux
3644 variables have default values. (reported by Bruno Haible)
3645 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3646 have CLOS classes; this appears also to have fixed reported
3647 instability in stack exhaustion detection.
3648 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3649 MUFFLE-WARNING when no associated restart is present is now
3651 * optimization: rearranged the expansion of various defining macros
3652 so that each expands into only one top-level form in a
3653 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3655 * optimization: used a previously little-used slot in symbols to
3656 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3658 * fixed some bugs revealed by Paul Dietz' test suite:
3659 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3661 ** Fixed an optimization bug related to inheritance of initforms
3662 from local to shared slots.
3663 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3664 ** CAST optimizer forgot to flush argument derived type.
3665 ** print/read consistency on floats is now orders of magnitude
3666 more likely. (thanks also to Bruno Haible for a similar report
3668 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3669 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3670 for objects of type REAL. Make it so.
3671 ** SXHASH is specified (infelicitously) to respect similarity,
3672 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3673 it so. (thanks to Markus Ziegler)
3674 ** on the Alpha, the compiler succeeds in compiling functions
3675 returning a known number of arguments greater than 63.
3676 ** fixed handling of invalid NIL arguments in keyword position
3678 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3680 ** provided a readably-printable representation for RANDOM-STATE
3682 ** ensured that pathnames, where they have a namestring, always
3683 print using #P"..." syntax.
3685 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3686 * Support for the forthcoming 2.0 version of the NetBSD kernel
3687 running on x86 hardware has been added. (thanks to Perry
3688 E. Metzger most immediately, and others for their past work)
3689 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3690 current release version; SBCL's OpenBSD support had been broken
3691 since about the time of OpenBSD's switch to ELF binary format.)
3692 * [placeholder for DX summary]
3693 ** user code with &REST lists declared dynamic-extent, under high
3694 speed or space and low safety and debug optimization policy.
3695 * The manual has been converted to Texinfo format and the debugger
3696 chapter from the cmucl manual has been added.
3697 * A facility has been added to extract documentation strings from
3698 sbcl and store them as Texinfo-formatted snippets for inclusion in
3699 the manual (via Texinfo's @include directive)
3700 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3701 the test case to Dave Roberts)
3702 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3703 pointers. (reported by Sean Ross)
3704 * bug fix: PROFILE output is printed nicely even for large numerical
3705 values. (thanks to Zach Beane)
3706 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3707 greater than 32 handle EOF correctly.
3708 * bug fix: on X86 an immediate argument of the IMUL instruction is
3709 correctly printed in disassembly. (thanks to Lutz Euler)
3710 * bug fix: class slots in redefined classes preserve their old
3711 values. (thanks to Bruno Haible and Nikodemus Siivola)
3712 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3713 succeeds. (reported by Marco Baringer)
3714 * fixed some bugs revealed by Paul Dietz' test suite:
3715 ** READ-SEQUENCE now works on ECHO-STREAMs.
3716 ** RATIONALIZE works more according to its specification. (thanks
3719 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3720 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3721 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3722 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3723 should matter to you only if you rebind the printer control
3724 variables and then find you want different bindings in the
3725 debugger than in the ordinary execution of your program.)
3726 * The runtime build system has been tweaked to support building
3727 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3728 assembler and linker. (thanks to Nikodemus Siivola)
3729 * Unbound, undefined, undeclared variables now trigger full
3730 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3731 more often programmer error than deliberate exploitation of undefined
3733 * optimization: the hash algorithm for strings has changed to one
3734 that is less vulnerable to spurious collisions. (thanks to Juho
3736 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3737 needless bounds checking. (thanks to Juho Snellman)
3738 * optimization: implemented multiplication as a modular
3739 (UNSIGNED-BYTE 32) operation on the PPC backend.
3740 * fixed some bugs revealed by Paul Dietz' test suite:
3741 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3743 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3744 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3745 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3747 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3749 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3751 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3752 their output stream on EOF from read.
3753 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3754 have been read to end-of-file.
3755 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3757 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3758 description of determination of which consecutive characters
3760 ** Printing the "Space" character with escaping on now yields "#\\ ",
3761 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3762 ** Reading floating-point numbers with *READ-BASE* set to a number
3763 less than 10 works correctly.
3764 ** Reading floating-point numbers with *READ-BASE* set to a number
3765 more than 10 works correctly.
3766 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3767 the readtable currently in effect.
3769 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3770 * minor incompatible change: parsing of namestrings on a physical
3771 (Unix) host has changed; numbers after the final #\. in a
3772 namestring are no longer interpreted as a version field. This is
3773 intented to be largely invisible to the user, except that the
3774 meaning of the namestring "*.*.*" has changed: it now refers to a
3775 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3776 should usually be replaced by
3777 (make-pathname :name :wild :type :wild :version :wild)
3778 with the added benefit that this is more likely to be portable.
3779 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3780 option to OPEN now signals an error if the file being opened
3781 exists; this may have an impact on existing code.
3782 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3783 signals received, on the PowerPC platforms (both Linux and
3784 Darwin). (thanks to Pierre Mai for pointing out the location of
3786 * several fixes on OS X: The system now builds and runs cleanly on
3787 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3788 (thanks to Brian Mastenbrook)
3789 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3790 second-resolution: integer multiples of 1/3600 between -24 and 24.
3791 (thanks to Vincent Arkesteijn)
3792 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3793 type when called with 1 argument; PEEK-CHAR checked type of
3794 PEEK-TYPE only after having read first character from a
3795 stream. (reported by Peter Graves)
3796 * bug fix: the garbage collector now has much better locality
3797 behaviour, and in particular no longer treats all memory as being
3798 exhausted when many small objects point to each other in a deeply
3800 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3801 recognized as being TYPEP their class.
3802 * bug fix: the PUSHNEW documentation string has been corrected.
3803 (thanks to Vincent Arkesteijn)
3804 * bug fix: defaulting of the value for the last of an atypically
3805 large number of multiple values being bound was not being
3806 performed correctly on the Alpha or PPC platforms
3807 * optimization: implemented multiplication as a modular
3808 (UNSIGNED-BYTE 32) operation on the x86 backend.
3809 * optimization: SEARCH on simple-base-strings can now be open-coded.
3810 (see also contrib/compiler-extras.lisp for inspiration for
3811 teaching the compiler about the Boyer-Moore algorithm).
3812 * value, returned by MAX (and MIN) called with several EQUALP, but
3813 not EQL, arguments now does not depend on compiler settings.
3814 * fixed some bugs revealed by Paul Dietz' test suite:
3815 ** in stack analysis liveness information is propagated from
3816 non-local entry points.
3817 ** pathwise CAST removing failed when the CAST node did not start
3819 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3820 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3822 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3823 host is already defined.
3824 ** RENAME-FILE works on streams instead of signalling an internal
3826 ** PEEK-CHAR uses the current readtable when determining whether
3827 or not a character is whitespace.
3828 ** MERGE-PATHNAMES handles the case when the pathname does not
3829 specify a name while the default-pathname specifies a version.
3830 ** Pathnames now stand a better chance of respecting print/read
3832 ** Attempting to use standardized file system operators with a
3833 pathname with invalid :DIRECTORY components signals a
3835 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3837 ** DIRECTORY on logical pathnames is more correct.
3838 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3839 signal a TYPE-ERROR if their argument is not a stream.
3840 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3841 designator argument does not designate a stream.
3842 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3843 examining the synonym.
3844 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3846 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3847 element-type larger than ([UN]SIGNED-BYTE 32).
3849 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3850 * When built with the :SB-FUTEX feature, threaded builds now take
3851 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3852 for faster/more reliable mutex and condition variable support.
3853 * Incompatible change (but one you probably shouldn't have been using
3854 anyway): the interface and code for arbitrating between multiple
3855 threads in the same user session has been redesigned.
3856 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3857 error when called without an explicit environment argument.
3858 (thanks to Nikodemus Siivola)
3859 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3860 confused about their position. (thanks to Adam Warner and Gerd
3862 * bug fix: Pretty printing backquoted forms with unquotations in the
3863 argument list position of various code constructs such as LAMBDA
3864 now works correctly. (reported by Paul Dietz)
3865 * bug fix: Pretty printing unquotations no longer loses all
3866 stream position information.
3867 * optimization: performance of string output streams is now less
3868 poor for multiple small sequence writes.
3869 * optimization: performance of CSUBTYPEP in the presence of complex
3870 expressions involving CONS and NOT many times has been improved.
3871 (reported by Paul Dietz)
3872 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3874 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3875 streams for the REPL, for the debugger, and so on. (thanks to
3877 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3878 * fixed some bugs revealed by Paul Dietz' test suite:
3879 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3880 is ignored if it is too small, rather than propagating through
3881 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3882 ** extremely complex negations of CONS types were not being
3883 sufficiently canonicalized, leading to inconsistencies in
3885 ** VALUES tranformer lost derived type.
3887 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3888 * fixed a bootstrapping bug: the build process no longer assumes
3889 that the various BOOLE-related constants have the same value in
3890 host and target lisps. (noted by Paul Dietz' test suite on an
3891 SBCL binary built from CLISP)
3892 * The system can now be dynamically linked on the MIPS platform,
3893 which enables dynamic loading of foreign code from Lisp. (thanks
3894 to Ralf Baechle for discussions on the MIPS ABI)
3895 * The system now records debugging information for its own source
3896 files in a filesystem-position-independent manner, relative to
3897 the "SYS" logical host.
3898 * fixed a compiler bug: MV-LET convertion did not check references
3899 to the "max args" entry point. (reported by Brian Downing)
3900 * tweaked disassembly notes to be less confident about proclaiming
3901 some instruction as an LRA. (thanks to Brian Downing)
3902 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3903 now each have their own history, command character, and other
3904 characteristics. (thanks to David Lichteblau)
3905 * fixed some bugs revealed by Paul Dietz' test suite:
3906 ** compiler failure in compiling LOGAND expressions including a
3908 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3909 shift greater than 32.
3910 ** FLUSH-DEST did not mark blocks for type check regeneration.
3911 ** HANDLER-CASE failed to accept declarations in handler clauses
3912 in some circumstances.
3914 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3915 * New code in contrib/sb-introspect (still probably not entirely
3916 stable yet) provides some support for smart Lisp development
3917 environments like SLIME.
3918 * The conditions signalled for errors occurring when loading .fasl
3919 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3920 in a way which should help ASDF recover gracefully.
3921 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3922 stuff has been cleaned up. If you code contrib/ stuff, this might
3923 affect you, and you can look at contrib/README, contrib/STANDARDS,
3924 and/or the 0.8.4.27 diff to check.
3925 * In full calls the compiler now does not generate checks for declared
3926 argument types for all arguments.
3927 * various threading fixes
3928 ** and some experimental patches which didn't make it into
3929 the main tree for this release, but which are shipped in
3930 contrib/experimental-thread.patch as a possible fix for some
3931 failures (deadlock, spinning...) in GC-intensive multithreaded
3933 * fixed PPC build problem (source code incompatibility of different
3934 library versions): added offsetof() hackery which attempts to divine
3935 where glibc maintainers put uc_mcontext today
3936 * fixed bug 282: compiler does not trust type assertions while passing
3937 arguments to a full call.
3938 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3939 &OPTIONAL VALUES type parameter.
3940 * fix bug 214: algorithm for noting rejected templates is now more
3941 similar to that of template seletion. (also reported by rydis on
3943 * fixed bug 141b: printing backquoted information readably and prettily
3944 inserts a space where necessary.
3945 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3946 (CHARACTER 10) are now reported as errors, rather than propagated
3947 as unknown types. (reported by piso on #lisp)
3948 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3949 with values NIL and :ERROR. (thanks to Milan Zamazal)
3950 * fixed bug 191c: CLOS now does proper keyword argument checking as
3951 described in CLHS 7.6.5 and 7.6.5.1.
3952 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3953 longer raise an error; further, using a list as a for-as-arithmetic
3954 counter now raises a meaningful error.
3955 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3956 now understood by sequence creation functions such as MAKE-SEQUENCE
3958 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3959 a STRING-INPUT-STREAM.
3960 * compiler enhancement: SIGNUM is now better able to derive the type
3962 * type declarations inside WITH-SLOTS are checked. (reported by
3964 * fixed some bugs revealed by Paul Dietz' test suite:
3965 ** incorrect optimization of TRUNCATE for a positive first
3966 argument and negative second.
3967 ** compiler failure in let-convertion during flushing dead code.
3968 ** compiler failure while deriving type of TRUNCATE on an
3969 interval, containing 0.
3970 ** ASH of a negative bignum by a negative bignum count now returns
3972 ** intersection of CONS types now canonicalizes properly, fixing
3973 inconsistencies in SUBTYPEP.
3975 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3976 * incompatible change: The --disable-debugger command line
3977 option now clobbers the debugger at a more fundamental
3978 level, by redefining #'INVOKE-DEBUGGER instead of by
3979 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3980 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3981 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3982 enter the debugger REPL and then suffer recursive errors
3983 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3984 while under the new system, BREAK in --disable-debugger mode
3985 terminates the system just as an unhandled error would.
3986 * fixed compiler performance when processing loops with a step >1;
3987 * bug fix: DOCUMENTATION now retrieves generic function
3988 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3989 support has been systematized, and now supports the methods
3990 specified by ANSI, along with a default method and a method for
3991 slot documentation. (reported by Nathan Froyd)
3992 * bug fix: effective methods associated with a generic function are
3993 no longer cached over a change of that generic function's method
3994 combination. (reported by Andreas Fuchs)
3995 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3996 names a non-existent directory. (thanks to Andreas Fuchs)
3997 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3998 the PPC platform, lead to stack corruption; this has been fixed.
3999 (reported by Rainer Joswig)
4000 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4001 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4002 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4003 arithmetic in general, is now much more reliable on the PPC
4005 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4006 platform now returns the right answer.
4007 * optimization: restored some effective method precomputation in
4008 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4009 precomputation is now tunable.
4010 * optimization: compiler-internal data structure use has been
4011 reviewed, and changes have been made that should improve the
4012 performance of the compiler by about 20%.
4013 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4014 simple-base-strings and simple-bit-vectors is improved.
4015 * optimization: the optimization of 32-bit logical and arithmetic
4016 functions introduced in version 0.8.3 on the x86 has been
4017 implemented on the mips, ppc and sparc platforms; an
4018 implementation of the same facility, but for 64-bit arithmetic,
4019 has been added for the alpha.
4020 * microoptimization: the compiler is better able to make use of the
4021 x86 LEA instruction for multiplication by constants.
4022 * bug fix: in some situations compiler did not report usage of
4023 generic arithmetic in (SPEED 3) policy.
4024 * bug 145b fix: compiler used wrong type specifier while converting
4025 MEMBER-types to numeric.
4026 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4028 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4029 index argument now works properly on the Alpha platform.
4030 * bug fix: floating point exception treatment on the Alpha platform
4032 * bug fix: FILE-POSITION works much better on string input and
4033 output streams. (thanks to Nikodemus Siivola)
4034 * bug fix: many threading/garbage collection symptoms sorted.
4035 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4036 might be pseudo-atomic.
4037 * internal change: Stopping for GC is now done with signals not
4038 ptrace. GC is now done in whichever thread wanted it, instead of
4040 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4042 * bug fix: result form in DO is not contained in the implicit
4044 * incompatible change: ICR structure is changed; the value part of
4045 CONTINUATION is now called LVAR; corresponding functions are
4046 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4047 * added type deriver for ISQRT (thanks to Robert E. Brown).
4048 * bug fix: better support for loading from the command line when an
4049 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4051 * fixed some bugs revealed by Paul Dietz' test suite:
4052 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4053 ** ROUND and FROUND now give the right answer when given very
4054 small float arguments.
4055 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4057 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4058 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4059 ** LCM should return a non-negative integer.
4060 ** PARSE-INTEGER returned the index of a terminator instead of the
4061 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4062 ** PARSE-INTEGER returned an incorrect index being applied to a
4064 ** LCM with two arguments of 0 returns 0 rather than signalling
4066 ** unsigned addition of a 32-bit constant with the high bit set no
4067 longer causes an internal compiler error on the x86.
4068 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4069 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4070 with negative last argument.
4071 ** byte specifiers with zero size and position no longer cause
4072 an error during type derivation.
4073 ** bignum multiplication on the Alpha platform now returns the
4075 * porting: The system now builds on SuSE AMD64, although it still
4076 generates a 32-bit binary.
4077 * .fasl file incompatibility: The fasl file version number has
4078 been incremented (because of the changes to internal compiler
4079 data structures referred to above).
4081 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4082 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4083 more accurately, on the Darwin kernel running on PowerPC hardware.
4084 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4085 * Compiler code deletion notes now signal a condition of type
4086 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4087 an associated MUFFLE-WARNING restart.
4088 * The compiler now performs limited argument count validation of
4089 constant format strings in FORMAT, and where appropriate in ERROR,
4090 CERROR and WARN. (thanks to Gerd Moellmann)
4091 * New ASDF-INSTALL contrib can be used for automatic download and
4092 installation of third-party Lisp code from CCLAN or other sites
4094 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4095 which forces another thread to execute a function supplied by the
4097 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4098 now accept and act upon their :ELEMENT-TYPE keyword argument.
4099 (reported by Martin Atzmueller, Edi Weitz)
4100 * bug fix: FILE-POSITION now accepts position designators up to
4101 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4102 is the greater. (thanks to Patrik Nordebo)
4103 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4104 Kalle Olavi Niemitalo)
4105 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4106 printable. (reported by Eric Marsden)
4107 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4108 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4109 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4110 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4111 (thanks to Stig Sandoe)
4112 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4113 UNREAD-CHAR now correctly includes the unread character in the
4114 target sequence. (thanks to Gerd Moellmann)
4115 * bug fix in threaded builds: the system can now be suspended and
4116 resumed by shell job control with minimal disruption.
4117 * bug fixes in times and timezones >2038AD
4118 * better handling of "where is GNU make?" problem in build scripts
4119 (thanks to Nikodemus Siivola)
4120 * new optimization: inside a named function any reference to a
4121 function with the same name is considered to be a self-reference;
4122 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4123 optimization quality.
4124 * new optimization on x86: logical functions and + now have
4125 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4126 used when the result is truncated to 32 bits.
4127 * VALUES declaration is partially enabled.
4128 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4129 * fixed some bugs revealed by Paul Dietz' test suite:
4130 ** The system now obeys the constraint imposed by
4131 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4132 types form a lattice under type intersection.
4133 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4134 ** ASSOC now ignores NIL elements in an alist.
4135 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4136 and (1+ MOST-POSITIVE-FIXNUM) answers.
4137 ** The addition of a method with invalid qualifiers to a generic
4138 function does not cause an error to be signalled immediately;
4139 a warning is signalled, and the error is generated only on
4140 calling the generic function.
4141 * changed .fasl file version number, in part to add type codes for
4142 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4143 obscure ANSI requirements
4145 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4146 * fixed bug 148: failure to inline-expand a local function left
4147 garbage, confusing the compiler.
4148 * fixed bugs 3cd: structure slot readers perform type check if the
4149 slot can have an invalid value (i.e. it is either not initialized
4150 or can be written with a less specific slot writer).
4151 * bug fix: the compiler now traps array references to elements off
4152 the end of an array; previously, the bounds checking in some
4153 circumstances could go off-by-one.
4154 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4156 * type declarations for array element types now obey the description
4157 on the CLHS page "Declaration TYPE", as per discussions on
4158 sbcl-help around 2003-05-08. This means that a declaration
4159 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4160 declaration, all references to BAR will be asserted or assumed
4161 (with THE, so dependent on compiler policy) to involve objects of
4162 type FOO. Note that no such declaration is implied in
4163 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4164 * declared types of functions from the "Conditions"
4165 chapter. (reported by Paul Dietz)
4166 * bug fix: CERROR accepts a function as its first argument.
4167 * bug fix: NTH an NTHCDR accept a bignum as index
4168 arguments. (reported by Adam Warner)
4169 * optimization: character compare routines now optimize comparing
4170 against a constant character. (reported by Gilbert Baumann)
4171 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4172 argument now works properly on the MIPS platform.
4173 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4174 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4175 declared to have a functional type, does not cause an error
4177 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4178 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4179 * fixed bug: if last continuation of a deleted block has a
4180 destination, this destination should be deleted too. (reported by
4182 * fixed a bug in the bootstrap process: the host compiler's values
4183 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4184 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4185 test case from Patrik Nordebo)
4186 * improved the ability of the disassembler on the PPC platform to
4187 provide helpful disassembly notes.
4188 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4189 the class in more cases than previously.
4190 * bug fix: FILE-POSITION now understands :START and :END for
4191 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4192 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4193 8) data. (thanks to David Lichteblau)
4194 * bug fix: it is possible to add a method to a generic function
4195 without lambda list.
4196 * bug fix: reader failed to signal END-OF-FILE inside an
4197 object representation. (reported by Nikodemus Siivola)
4198 * fixed some bugs revealed by Paul Dietz' test suite:
4199 ** LAST and [N]BUTLAST should accept a bignum.
4200 ** condition slot accessors are methods.
4201 ** (VECTOR NIL) is a subtype of STRING.
4203 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4204 * minor incompatible change: some nonsensical specialized lambda
4205 lists (used in DEFMETHOD) which were previously ignored now signal
4207 * minor incompatible change: the system is now aware of the types of
4208 variables in the COMMON-LISP package, and will signal errors for
4209 most violations of these type constraints (where previously they
4210 were silently accepted).
4211 * minor incompatible change: COMPILE-FILE now uses the freedom
4212 afforded (ANSI 3.2.2.3) to use derived function types for
4213 functions defined in the same file. This also permits the system
4214 to warn on static type mismatches and function
4215 redefinition. (Currently it does not work with high DEBUG level.)
4216 * minor incompatible change: VALUES declaration is disabled.
4217 * When issuing notes, the compiler now signals a condition of type
4218 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4219 restart for use in user handlers. It is expected that the
4220 COMPILER-NOTE condition will eventually become a condition
4221 supertype to a hierarchy of note types, which will then be
4222 handleable in a similar fashion. However, at the moment, no such
4223 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4224 but it's an implementation detail, not a classification for the
4226 * Changes in type checking closed the following bugs:
4227 ** type checking of unused values (192b, 194d, 203);
4228 ** template selection based on unsafe type assertions (192c, 236);
4229 ** type checking in branches (194bc).
4230 * A short form of VALUES type specifier has ANSI meaning (it has
4231 increased the number of situations when SBCL cannot perform type
4233 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4234 keywords or constants is permissible.
4235 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4236 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4237 classes. (thanks to Antonio Martinez)
4238 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4239 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4240 argument to a pretty-print stream. Instead, it leaves any such
4241 operations to DESCRIBE-OBJECT methods.
4242 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4244 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4245 lambda lists. (thanks to David Lichteblau)
4246 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4247 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4248 (thanks to Gerd Moellmann)
4249 * fixed bug 246: increased compilation speed of long
4250 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4252 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4254 * DEFCONSTANT now throws a condition of type
4255 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4256 constant to a non-EQL value; CONTINUE and ABORT restarts
4257 respectively change and preserve the value.
4258 * fixed bug 63: The code walker, part of the implementation of CLOS,
4259 is now better at handling symbol macros.
4260 * bug fix: There is no longer an internal implementation type named
4261 CL:LENGTH. (reported by Raymond Toy)
4262 * bug fix: In macro-like defining macros/special operators the
4263 implicit block does not enclose the lambda list.
4264 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4265 enclosed in parentheses) are not suitable as type specifiers, and
4266 their use properly signals an error now.
4267 * bug fix: An argument count mismatch for a type specifier in code
4268 being compiled no longer causes an unhandled error at compile
4269 time, but signals a compile-time warning.
4270 * fixed simple vector readable printing
4271 * bug fix: DESCRIBE takes more care over whether the class
4272 precedence list slot of a class is bound before accessing it.
4273 (reported by Markus Krummenacker)
4274 * bug fix: FORMATTER can successfully compile pretty-printer format
4275 strings which use variants of the ~* directive inside.
4276 * bug fix: SEARCH now applies its TEST predicate to the elements of
4277 the arguments in the correct order. (thanks to Wolfhard Buss)
4278 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4279 in type inference. (thanks to Robert E. Brown)
4280 * bug fix: Reading in symbols with an explicit package name of ""
4281 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4282 * fixed some bugs revealed by Paul Dietz' test suite:
4283 ** NIL is now allowed as a structure slot name.
4284 ** Arbitrary numbers, not just REALs, are allowed in certain
4285 circumstances in LOOP for-as-arithmetic clauses.
4286 ** Multiple class redefinitions before slot access no longer
4287 causes a type error.
4288 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4289 association between the name and a class.
4290 ** Generic functions with non-standard method-combination and over
4291 five methods all of which return constants no longer return NIL
4292 after the first few invocations. (thanks to Gerd Moellmann)
4293 ** CALL-NEXT-METHOD with no arguments now passes the original
4294 values of the arguments, even in the presence of assignment.
4295 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4297 ** DISASSEMBLE works with closures and funcallable instances.
4298 ** ADD-METHOD now returns the generic function, not the new method.
4299 ** FIND-METHOD signals an error if the lengths of the specializers
4300 is incompatible with the generic function, even if the ERRORP
4302 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4303 which its argument is a member.
4304 ** DEFCLASS only redefines the class named by its class-name
4305 argument if that name is the proper name of the class;
4306 otherwise, it creates a new class.
4307 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4308 of the UNBOUND-SLOT condition to the name of the slot.
4309 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4310 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4311 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4312 SLOT-MAKUNBOUND in the specified fashion.
4314 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4315 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4316 cross-compilation host. As a consequence, we can now bootstrap our
4317 way up to SBCL starting with a bare gcc toolchain and human-readable
4318 source code (first the source to CLISP, then the source to SBCL).
4319 * A contributed module containing a partial implementation of the
4320 simple-streams interface has been included. (thanks to Rudi
4322 * A contributed module implementing the RFC1321 Message Digest
4323 Algorithm, known as MD5, has been included.
4324 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4325 no longer has any effect, as the code controlled by this feature
4326 has been deleted. (As far as we know, no-one has ever built using
4327 this feature, and its semantics were confused in any case).
4328 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4329 work on conditions (as required by the ANSI specification),
4330 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4331 expected behaviour on conditions. Users should note, however,
4332 that such behaviour is not required by the ANSI specification,
4333 and so use of this behaviour may render their code unportable.
4334 * fixed some bugs revealed by Paul Dietz' test suite:
4335 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4337 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4338 ** SXHASH on condition objects no longer returns NIL.
4339 ** :ALLOCATION :CLASS slots are better treated; their values are
4340 updated on class redefinition, and initforms inherited from
4341 superclasses are applied.
4342 ** REMOVE-METHOD returns its generic function argument even when
4343 no method was removed.
4344 ** SHARED-INITIALIZE now initializes the values of the requested
4345 slots, including those with :ALLOCATION :CLASS.
4346 ** ALLOCATE-INSTANCE now works on structure classes defined via
4347 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4349 ** SLOT-EXISTS-P now works on conditions, as well as structures
4351 ** MAKE-LOAD-FORM now has the required methods on
4352 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4353 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4354 keyword, and now implements the SLOT-NAMES argument.
4355 ** methods with &OPTIONAL arguments no longer allow too many
4356 arguments to be passed in the call without error.
4357 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4358 option is consistent with the required arguments of the generic
4359 function lambda list.
4360 * bug fix: REQUIRE accepts a string designator. (Thanks to
4362 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4363 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4364 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4365 * bug fix: The compiler now checks for duplicated variables in macro
4367 * bug fix: SETQ on globals returns the correct value.
4368 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4369 not a COMPILER-ERROR (followed by some other strange error on
4370 choosing the CONTINUE restart).
4371 * bug fix: make.sh and friends are now more consistent in the way that
4372 they look for GNU "make".
4374 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4375 * experimental native threads support (on x86 Linux >=2.4 only).
4376 This is not compiled in by default: you need to add :SB-THREAD to
4377 the target features. See the "Beyond ANSI" chapter of the manual
4379 * fix for longstanding nonANSIism: The old distinction between
4380 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4381 The return value from CL:FIND-CLASS is now a CLOS class, and
4382 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4383 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4384 * An interface to the MetaObject Protocol, as described in Kiczales,
4385 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4386 MIT Press, 1991, is available from the SB-MOP package.
4387 * incompatible change: the SB-PCL package should now be considered
4388 a private implementation detail, and no longer a semi-private MOP
4390 * minor incompatible change: due to rearrangement for threads, the
4391 control stack and binding stack are now allocated at arbitrary
4392 addresses instead of being hardcoded per-port. Users affected by
4393 this probably have to be doing advanced things with shared
4394 libraries, and will know who they are.
4395 * minor incompatible change: Previously, all --eval forms used were
4396 processed with READ before any of them were processed with EVAL.
4397 Now each --eval form is processed with both READ and EVAL before
4398 the next --eval form is processed. (Thus package operations like
4399 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4400 work as the user might reasonably expect.)
4401 * minor incompatible change: *STANDARD-INPUT* is now only an
4402 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4404 * minor incompatible change: Y-OR-N-P is now character-oriented,
4405 not line oriented. Also, YES-OR-NO-P now works without errors.
4406 (thanks to Antonio Martinez)
4407 * sb-aclrepl module improvements: an integrated inspector, added
4408 repl features, and a bug fix to :trace command.
4409 * Known functions, which cannot be open coded by the backend, are
4410 considered to be able to check types of their arguments. (fixing
4411 a bug report by Nathan J. Froyd)
4412 * fixed a bug in computing method discriminating functions: It is
4413 now possible to define methods specialized on classes which have
4414 forward-referenced superclasses. (thanks to Gerd Moellmann)
4415 * fixed evaluation order in optional entries (reported by Gilbert
4417 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4418 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4419 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4420 required-by-AMOP NAME argument, as well as CLASS and
4421 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4422 * fixed bug 20: DEFMETHOD can define methods using names that are
4423 not the proper names of classes to designate class specializers.
4424 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4425 Unix file descriptors, instead of blowing up. (thanks to Antonio
4427 * Garbage collection refactoring: user-visible change is that a
4428 call to the GC function during WITHOUT-GCING will not do garbage
4429 collection until the end of the WITHOUT-GCING. If you were doing
4430 this you were probably losing anyway.
4431 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4432 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4433 TYPEP the latter but not the former.
4434 * The compiler issues a full WARNING for calls to undefined functions
4435 with names from the CL package.
4436 * MAP-INTO for a vector destination is open coded. (reported by
4437 Brian Downing on c.l.l)
4438 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4439 documentation string.
4440 * fixed some bugs revealed by Paul Dietz' test suite:
4441 ** COPY-ALIST now signals an error if its argument is a dotted
4443 ** Condition slots are now accessed more correctly in the presence
4444 of multiple initargs for a given slot.
4445 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4446 exclude restarts of the same name associated with a different
4448 ** DEFCLASS of forward-referenced classes with another
4449 forward-referenced class in the superclasses list no longer
4451 ** Condition slots are now initialized once each, not multiple
4452 times. (thanks to Gerd Moellmann)
4453 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4455 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4456 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4457 arguments contain duplicated elements.
4458 ** RESTART-CASE understands local macros.
4459 ** RESTART-CASE associates exactly its own restarts with a condition.
4460 ** ENDP in safe mode checks its argument to be of type LIST.
4461 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4462 in question is unbound.
4463 ** Optimized MAKE-INSTANCE functions no longer cause internal
4464 assertion failures in the presence of duplicate initargs.
4465 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4466 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4467 propagated even in the ctor optimized implementation of
4469 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4471 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4472 * a better implementation of SXHASH on (simple) bit vectors,
4473 measured both in execution speed and in distribution of results
4474 over the positive fixnums, has been installed. Likewise, a better
4475 implementation of EQUAL for simple bit vectors is now available.
4476 * fixed CEILING optimization for a divisor of form 2^k.
4477 * fixed bug 240 (emitting extra style warnings "using the lexical
4478 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4479 by Antonio Martinez)
4480 * fixed SXHASH, giving different results for NIL depending on type
4481 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4482 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4483 variable. (found by Rolf Wester)
4484 * SBCL does not ignore type declarations for special
4485 variables. (reported by rif on c.l.l 2003-03-05)
4486 * some bug fixes in contrib/sb-aclrepl/
4487 * fixed some bugs revealed by Paul Dietz' test suite:
4488 ** a bug in the CONS type specifier, whereby the CAR and CDR
4489 types got intertwined, has been fixed;
4490 ** the type system is now able to reason about the interaction
4491 between INTEGER and RATIO types more completely;
4492 ** APPEND, [N]REVERSE and NRECONC check that those their
4493 arguments, which must be proper lists, are really so;
4494 ** An array specialized to be unable to hold elements has been
4495 implemented, as required -- yes, really -- by ANSI;
4496 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4497 on malformed property lists;
4499 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4500 * incompatible packaging change: in line with Unix convention,
4501 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4502 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4503 * REQUIRE and PROVIDE are now optionally capable of doing something
4504 useful. See the documentation string for REQUIRE.
4505 * infrastructure for a managed SBCL contrib system: contributed
4506 modules in this release include:
4507 ** the ASDF system definition facility;
4508 ** an interface to the BSD Sockets API;
4509 ** an ACL-like convenience interface to the repl;
4510 (thanks to Kevin Rosenberg)
4511 ** an implementation of ROTATE-BYTE, with efficient implementation
4513 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4514 gives a closer approximation to the right answer than previously.
4515 (thanks to Raymond Toy)
4516 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4517 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4518 optional environment arguments, as required by ANSI.
4519 * fixed bugs in other functions taking environment objects, allowing
4520 calls with an explicit NIL environment argument to be compiled
4522 * fixed bug 228: primary return values from
4523 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4524 COMPILE or FUNCTION.
4525 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4526 :TYPE will no longer signal errors on innocuous objects.
4527 * fixed bug 231b: SETQ is better at respecting type declarations in
4528 the lexical environment.
4529 * fixed a bug in DEFCLASS: classes named by symbols with no or
4530 unprintable packages can now be defined.
4531 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4532 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4533 * fixed compiler failure related to checking types of functions.
4534 (reported by Robert E. Brown)
4535 * the compiler is now much more consistent in its error-checking
4536 treatment of bounding index arguments to sequence functions: in
4537 (SAFETY 3) code, errors will be signalled in almost all cases if
4538 invalid sequence bounding indices are passed to functions defined
4539 by ANSI to operate on sequences.
4540 * fixed a bug in the build procedure: documentation of SBCL-specific
4541 packages is now preserved and available in the final Lisp image.
4542 * lifted FDEFINITION lookup out of loops in the implementation of
4543 many list operations. (thanks to Robert E. Brown)
4544 * fixed a bug in the reader: the #n# reader macro now works for
4545 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4546 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4547 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4548 E. Brown and Tony Martinez respectively)
4549 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4550 SLOT-BOUNDP: in particular, it is now able to optimize them much
4551 better, and is now not vulnerable to having packages renamed.
4552 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4553 always called when a slot is not present in an instance. (thanks
4555 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4556 longer signal an error on unreading a character following EOF on
4557 the previous constituent stream. (thanks to Tony Martinez)
4558 * fixed some bugs revealed by Paul Dietz' test suite:
4559 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4560 not just nonnegative fixnums;
4561 ** the logical bit-array operators such as BIT-AND now accept an
4562 explicit NIL for their "opt-arg" argument (to indicate a
4563 freshly-consed result bit-array);
4564 ** ELT now signals an error on an invalid sequence index in safe
4566 ** the type system is now cleverer about negations of numeric
4567 types, and consequently understands the BIGNUM and RATIO types
4569 ** the type system is now cleverer about the interaction between
4570 INTEGER and RATIO types: while bugs still remain, many more
4571 cases are accurately computed;
4572 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4573 if it is in the last clause;
4574 ** CONSTANTLY now correctly returns a side-effect-free function in
4576 ** DECLARE is no longer treated as a special-operator; in
4577 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4578 * incremented fasl file version number due to the change in the
4579 DEFSTRUCT-SLOT-DESCRIPTION structure.
4581 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4582 * minor incompatible change: code processed by the "interpreter" or
4583 EVAL now has a compilation optimization policy of (DEBUG 2)
4584 (changed from (DEBUG 1)) to improve debuggability of interactive
4585 development, and to allow the use of the debug RETURN command in
4587 * an experimental implementation of the RETURN command for the
4588 debugger has been included. (thanks to Frederik Kuivinen)
4589 * fixed bug 62: constraints were not propagated into a loop.
4590 * fixed bug in embedded calls of SORT (reported and investigated by
4592 * fixed some bugs revealed by Paul Dietz' test suite:
4593 ** printing and reading of arrays with some dimensions having
4594 length 0 (thanks to Gerd Moellmann);
4595 ** BOA constructor with &AUX argument without a default value does
4596 not cause a type error;
4597 ** CONSTANTP now returns true for all self-evaluating objects.
4599 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4600 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4601 accessors that are related by inheritance, as specified in the
4602 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4603 Valtteri Vuorikoski)
4604 * The compiler is now able to inline functions that were defined in
4605 a complex lexical environment (e.g. inside a MACROLET).
4606 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4608 * Support for the upcoming FreeBSD-5.0 release has been included.
4609 (thanks to Dag-Erling Smorgrav)
4610 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4611 effect when it is not in a toplevel context.
4612 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4613 stand a better chance of being correct. (thanks to Gerd
4615 * fixed bug in COERCE, which now signals an error on coercing a
4616 rational to a bounded real type which excludes the expected
4618 * The compiler is now able to derive types more accurately from the
4619 COERCE and COMPILE functions.
4620 * fixed bug 223: functional binding is considered to be constant
4621 only for symbols in the CL package.
4622 * fixed bug 231: SETQ did not check the type of a variable being set
4623 (reported by Robert E. Brown)
4624 * A new optimization for MAKE-INSTANCE has been included, fixing
4625 various bugs (including relating to :ALLOCATION :CLASS slots and
4626 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4628 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4629 ** As required by ANSI, LOOP now disallows anonymous collection
4630 clauses such as COLLECT I in conjunction with aggregate boolean
4631 clauses such as THEREIS (= I 1);
4632 ** LOOP now signals an error when any variable is reused in the
4633 same loop (including the potentially useful construct analogous
4634 to WITH A = 1 WITH A = (1+ A);
4635 ** IT is only a special loop symbol within the first clause of a
4636 conditional loop clause;
4637 ** LOOP with a typed iteration variable over a hashtable now
4638 signals a type error iff it should.
4639 * fixed some other bugs revealed by Paul Dietz' test suite:
4640 ** FILE-STREAM now names the class previously known as FD-STREAM;
4641 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4642 argument) no longer signals an error;
4643 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4644 of the slot symbol, rather than using the current package
4645 ((:CONC-NAME "") continues to intern the slot's name in the
4647 * incremented fasl file version number, because of the incompatible
4648 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4649 of the new implementation of DEFINE-COMPILER-MACRO.
4651 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4652 * Support for building SBCL for MIPS platforms running in
4653 little-endian mode has now been checked in, and basic
4654 functionality on said platforms verified.
4655 * minor incompatible change: PCL now records the pathname of a file
4656 in which methods and the like are defined, rather than its
4658 * minor incompatible change: TRUENAME now considers the truename of
4659 a file naming a directory to be the pathname with :DIRECTORY
4660 component indicating that directory.
4661 * minor incompatible change: a NAMED clause in the extended form of
4662 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4663 reason for the previous behaviour is unclear.
4664 * more systematization and improvement of CLOS and MOP conformance
4665 in PCL (thanks to Gerd Moellman and Pierre Mai):
4666 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4668 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4669 primary methods with no specializers;
4670 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4672 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4673 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4674 FORWARD-REFERENCED-CLASSes; error reporting on
4675 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4677 ** SXHASH on CLOS instances now uses a slot internal to the
4678 instance to return different numbers on distinct instances,
4679 while preserving the same return value through invocations of
4681 ** DEFMETHOD signals errors when methods with longer incongruent
4682 lambda lists are added to generic functions;
4683 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4684 CLASS, as specified in AMOP;
4685 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4686 on the order returned by the primary method for classes of
4687 class STANDARD-CLASS;
4688 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4689 * fixed some bugs shown by Paul Dietz' test suite:
4690 ** DOLIST puts its body in TAGBODY;
4691 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4693 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4694 value producing form;
4695 ** if more variables are given to PROGV than values, extra
4696 variables are bound and made to have no value;
4697 ** NSUBSTITUTE on list arguments gets the right answer with
4699 ** ELT signals an error of type TYPE-ERROR when the index argument
4700 is not a valid sequence index;
4701 ** LOOP signals (at macroexpansion time) an error of type
4702 PROGRAM-ERROR when duplicate variable names are found;
4703 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4704 ** FUNCALL of special-operators now cause an error of type
4706 ** PSETQ now works as required in the presence of side-effecting
4707 symbol-macro places;
4708 ** NCONC accepts any object as its last argument;
4709 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4711 ** loop-for-as-package does not require a package to be explicitely
4713 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4715 * fixed bug 166: compiler preserves "there is a way to go"
4716 invariant when deleting code.
4717 * fixed bug 172: macro lambda lists with required arguments after
4718 &REST arguments now cause an error to be signalled. (thanks to
4720 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4721 bug. (thanks to Matthew Danish)
4722 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4724 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4725 arguments are lexically rebound. (thanks to Gerd Moellmann and
4727 * fixed bug 194: error messages are now more informative when there
4728 is no primary method applicable in a call to a generic
4729 function. (thanks to Gerd Moellmann)
4730 * fixed bug in command line argument checking (thanks to Julian
4732 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4733 (thanks to Matthew Danish)
4734 * incremented fasl file version number, because of the
4735 SXHASH-related changes in the layout of CLOS data structures
4737 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4738 * minor incompatible change: The runtime (the Unix executable named
4739 "sbcl") is now much pickier about the .core files it will load.
4740 Essentially it now requires .core files to descend from the same
4741 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4742 as the runtime does. (The intent is to prevent the crashes which
4743 can occur, and which can even be reported as mysterious failures,
4744 when people patch the sources or change the build parameters
4745 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4746 sbcl and .core files.)
4747 * fixed bug: VALUES-LIST is no longer optimized away.
4748 * fixed bug 142: The FFI conversion of C string values to Lisp
4749 string values no longer conses excessively. (thanks to Nathan
4750 Froyd porting Raymond Toy's fix to CMU CL)
4751 * began to systematize and improve MOP conformance in PCL (thanks to
4752 Nathan Froyd, Gerd Moellman and Pierre Mai):
4753 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4755 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4756 ** FINALIZE-INHERITANCE is now called on class finalization;
4757 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4758 argument precedence order.
4759 * fixed bug 202: The compiler no longer fails on functions whose
4760 derived types contradict their declared type.
4761 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4762 so it can be non-toplevel.
4763 * The fasl file version number has changed (because of the new
4764 implementation of DEFMACRO).
4765 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4766 safe code, that any length requirement by their type-specifier
4767 argument is valid. The exceptions to this are described in bug
4769 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4770 functions now check the types of their inputs as required by ANSI.
4771 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4772 introduced symbol is DECLAREd to be SPECIAL.
4773 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4774 * fixed bug: :COUNT argument to sequence functions may be negative
4775 * fixed bug: body of DO-SYMBOLS may contain declarations
4776 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4777 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4778 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4779 symbol macro only once
4780 * fixed printing of call frame when argument list is unavailable
4781 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4782 * compiler no longer signals WARNING on unknown keyword
4785 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4786 * A beta-quality port to the mips architecture running Linux,
4787 based on the old CMUCL backend, has been made. It has been tested
4788 on a big-endian kernel, and works sufficiently well to be able to
4789 rebuild itself; it has not been tested in little-endian mode.
4790 * fixed an inconsistency between gencgc.c and purify.c which made
4791 dumping/loading .core files unreliable
4792 * fixed bug 120a: The compiler now deals correctly with IFs where
4793 the consequent is the same as the alternative, instead of
4794 misderiving the return type. (thanks to Alexey Dejneka)
4795 * fixed bug 113: Logical pathnames are now dumpable (the logical
4796 host is resolved at load-time, throwing an error if it is not
4798 * fixed bug 174: FORMAT's error message is slightly clearer when a
4799 non-printing character is used in a format directive.
4800 * fixed several bugs in compiler checking of type declarations, i.e.
4801 violations of the Python "declarations are assertions" principle
4802 (thanks to Alexey Dejneka)
4803 * fixed several bugs in PCL's error checking (thanks to Gerd
4805 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4807 * fixed bug in compilation of functions as first class values
4808 (thanks to Antonio Martinez-Shotton)
4809 * The compiler's handling TYPE-ERRORs which it can prove will
4810 inevitably happen at runtime has been cleaned up and corrected
4811 in several ways. (thanks to Alexey Dejneka)
4812 * improved argument type checking for various basic arithmetic
4813 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4814 lavished on them in the past that they can be compiled in many
4815 ways in different special cases
4816 * fixed bug 181: compiler checks validity of user supplied type
4818 * cleaned up code flushing in optimization: Function calls which
4819 should signal errors for safety purposes (e.g. which ANSI says
4820 should signal errors when their arguments are of incorrect type)
4821 are no longer optimized away.
4822 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4823 * incremented fasl file version number, because changes in the
4824 implementation of sequence functions like COERCE caused
4825 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4826 in old inline expansions) to become undefined. (Actually these
4827 changes were later undone, so we might very well be binary
4828 compatible with 0.7.7 after all, but leaving the version number
4829 incremented seemed like the simplest and most conservative
4832 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4833 * An alpha-quality port to the parisc architecture running Linux,
4834 based on the old CMUCL backend, has been made. This, even more so
4835 than the other backends, should be considered still a work in
4836 progress; known problems include that the Linux kernel in 64-bit
4837 mode does not propagate the correct sigcontext structure to
4838 userspace, and consequently SBCL on a parisc64 kernel will not
4840 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4841 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4842 suppressed.) Also now that the compiler is looking at declarations
4843 in the environment, it checks optimization declarations as well,
4844 and suppresses inlining when (> DEBUG SPEED).
4845 * More fixes have been made to treatment of floating point exception
4846 treatment and other Unix signals. In particular, floating point
4847 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4848 * The detection and handling of control stack exhaustion (infinite
4849 or very deeply nested recursion) has changed. Stack exhaustion
4850 detection is now done by write-protecting pages at the OS level
4851 and applies at all optimization settings; when found, a
4852 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4853 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4854 be caught using IGNORE-ERRORS.
4855 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4856 correctly when transforming recursive LABELS functions to LETs.
4857 (thanks to Alexey Dejneka)
4858 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4859 that are names of constants or global variables.
4860 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4861 alien routines with docstrings.
4862 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4863 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4865 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4866 (thanks to Eric Marsden)
4867 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4868 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4869 * Bug fix: The SPARC backend can now compile functions involving
4870 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4871 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4872 to a functions expecting a PATHNAME-DESIGNATOR.
4873 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4874 lambda lists. (thanks to Alexey Dejneka)
4875 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4876 functions so that EXPORTing the name of the class doesn't cause
4877 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4878 to Antonio Martinez for reporting this)
4879 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4880 constant-folded without failing an assertion. (thanks to Einar
4881 Floystad Dorum for reporting this)
4882 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4883 types are now dealt with more correctly by the compiler.
4884 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4885 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4886 behaviour analogous to RENAME-FILE. This puts its behaviour more
4887 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4889 * The fasl file version number has changed again. (because of the
4890 bug fix involving the names of PCL MAKE-INSTANCE functions)
4892 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4893 * bug fix: Floating point exceptions are treated much more
4894 consistently on the x86/Linux and PPC/Linux platforms.
4895 * Array initialization with :INITIAL-ELEMENT is now much faster for
4896 cases when the compiler cannot open code the array creation, but
4897 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4898 array accesses have also seen a speed increase.
4899 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4900 specified. (This was at the root of some bad interactions between
4901 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4903 * bug fix: Internal error arguments for undefined functions are now
4904 computed correctly on the PPC/Linux platform.
4905 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4906 Raymond Toy's patch for CMU CL)
4907 * Support for the Solaris 9 operating environment has been included
4908 (thanks to Daniel Merritt)
4909 * A very ugly but hopefully complete draft of the missing FFI chapter
4910 of the manual has been created by reformatting the corresponding
4911 CMU CL manual chapter into (currently very ugly and incoherent)
4912 DocBook and bringing it up to date for SBCL behavior. Thus, the
4913 manual is now essentially complete, at least by my extreme
4914 once-and-only-once standards, whereby it's acceptable to refer to
4915 the doc strings of SB-EXT functions as the primary documentation.
4916 * The fasl file version number has changed again, due to cleanup of
4917 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4918 is no longer a static symbol.)
4920 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4921 * SBCL now builds with OpenMCL (version 0.12) as the
4922 cross-compilation host; also, more progress has been made toward
4923 bootstrapping under CLISP.
4924 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4926 * bug 158 fixed: The compiler can now deal with integer loop
4927 increments different from 1; fixing this turned out also to fix
4929 * bug 169 fixed: no more bogus warnings about using lexical bindings
4930 despite the presence of perfectly good SPECIAL declarations (thanks
4931 to David Lichteblau)
4932 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4933 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4934 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4936 * bug 180 fixed: Method combination specifications no longer ignore
4937 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4938 * bug fix: Structure type predicate functions now check their argument
4939 count as they should.
4940 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4941 correctly. (thanks to Pierre Mai)
4942 * minor incompatible change: The --noprogrammer option is deprecated
4943 in favor of the new --disable-debugger option, which is very similar.
4944 (The major difference is that it takes effect at a slightly different
4945 time at startup, causing handling of errors in --sysinit and
4946 --userinit files will be affected differently.) The
4947 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4948 been added to allow this functionality to be controlled from ordinary
4949 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4950 maintainers, who might want to run non-interactive scripts to
4951 build SBCL cores which will later be used interactively.)
4952 * minor incompatible change: The LOAD function no longer, when given
4953 a wild pathname to load, loads all files matching that pathname.
4954 Instead, an error of type FILE-ERROR is signalled.
4956 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4957 * bug 147 fixed: The compiler preserves its block link/count
4958 invariants more correctly now so that it doesn't crash. (thanks
4960 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4962 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4963 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4964 no-value-for-this-character as NIL (as specified by ANSI).
4965 * HOST-NAMESTRING on physical pathnames now returns a string that is
4966 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4967 (thanks to Christophe Rhodes)
4968 * The Alpha port handles icache flushing more correctly. (thanks to
4970 * More progress has been made toward bootstrapping under CLISP. (thanks
4971 to Christophe Rhodes)
4972 * The fasl file format has changed again, because dynamic loading
4973 on OpenBSD (which has non-ELF object files) motivated some cleanups
4974 in the way that foreign symbols are transformed and passed around.
4975 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4976 is no longer treated as whitespace by the reader, but instead as
4977 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4978 |A
\7fB|, instead of A as it used to.
4980 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4981 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4982 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4983 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4984 this as of 0.7.1.45, but was left out of the previous news section
4985 (thanks to Dan Barlow)
4986 * SBCL now runs on the Solaris operating system on SPARC architectures
4987 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4988 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4989 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4990 * SPARC backend cleanups, allowing builds of cores optimized for V8
4991 and V9 SPARCS, and also emission of code targeted to a particular
4992 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4994 * SBCL is closer to bootstrapping under CLISP, thanks to various
4995 fixes by Christophe Rhodes.
4996 * The fasl file format has changed again, to allow the compiler's
4997 INFO database to support symbol macros.
4998 * The user manual (in doc/) is formatted into HTML more nicely.
4999 (thanks to coreythomas)
5000 * The system is smarter about SUBTYPEP relationships, especially
5001 those involving NOT types (including types such as ATOM which are
5002 represented internally using NOT types). Thus SUBTYPEP is less
5003 likely to return (VALUES NIL NIL) in general, and in particular
5004 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5006 * The fasl file format has changed again, because the internal
5007 representation of types now includes a new slot to support the new
5008 SUBTYPEP-of-NOT-types logic.
5009 * (not a change in the main branch of SBCL, but a related prototype
5010 which can hopefully be merged into the main branch of SBCL in the
5011 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5012 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5013 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5014 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5015 dispatch macro character combinations. (thanks to Alexey Dejneka)
5016 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5017 that superficially look like logical namestrings correctly.
5018 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5020 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5021 default supplied-p) for &optional and &key arguments. (thanks to
5024 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5025 * incompatible change: The compiler is now less aggressive about
5026 tail call optimization, doing it only when (> SPACE DEBUG) or
5027 (> SPEED DEBUG). (This is an incompatible change because there are
5028 programs which relied on the old CMU-CL-style behavior to optimize
5029 away their unbounded recursion which will now die of stack overflow.)
5030 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5031 for non-GENCGC systems has been increased to 20M (since that
5032 seems much closer to the likely performance optimum for modern
5033 systems than the old 4M value was)
5034 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5035 and *DEBUG-PRINT-LEVEL*
5036 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5037 of CMU CL's support for SPARC, and various endianness and other
5038 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5039 * new syntactic sugar for the Unix command line: --load foo.bar is now
5040 an alternate notation for --eval '(load "foo.bar")'.
5042 ** The system now detects stack overflow and handles it gracefully,
5043 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5044 optimization settings. (This is a good thing in general, and
5045 its introduction in this version should be particularly timely
5046 for anyone whose code fails because of suppression of tail
5048 ** The system now hunts for the C variable "environ" in a more
5049 devious way, to avoid segfaults when the C library version differs
5050 between compile time and run time. (thanks to Christophe Rhodes)
5051 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5052 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5053 ** The compiler no longer issues bogus style warnings for undefined
5054 classes in the same source file as the DEFCLASSes which defined
5055 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5057 ** fixes in CONDITION class precedence list for undefined function
5058 errors (thanks to Alexei Dejneka)
5059 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5060 correctly. (thanks to Dan Barlow)
5061 ** portability fixes aiming at bootstrapping under CLISP (thanks
5062 to Dave McDonald and Christophe Rhodes)
5063 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5064 ** fixes in type translation and and type inference (thanks to
5066 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5067 ** various fixes in the new ports (thanks to Dan Barlow)
5068 * several changes related to debugging:
5069 ** suppression of tail recursion, as noted above
5070 ** stack overflow detection, as noted above
5071 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5072 is now the default. (For some time encapsulation has been more
5073 reliable than the breakpoint-based :ENCAPSULATE NIL
5074 implementation, at least on X86 systems; and I just noticed that
5075 encapsulation also seems closer to the spirit of the ANSI
5078 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5080 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5081 up properly again. (There was a packaging bug in 0.7.0 which
5082 left their definitions in SB-SYS::LOAD-FOREIGN and
5083 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5084 vital for most things which interface to C-level interfaces,
5085 like extensions working with sockets or databases or
5086 Perl-compatible regexes or whatever, and the need to fix
5087 this bug is the main reason that 0.7.1 was released so
5089 ** DEFGENERIC is now choosier about the methods it redefines, so that
5090 reLOADing a previously-LOADed file containing DEFGENERICs does
5091 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5092 cycle now works as it should. (thanks to Alexey Dejneka)
5093 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5094 fixed by Christophe Rhodes. (He actually submitted this patch
5095 months ago, and I delayed until after 0.7.0.)
5096 ** Bug 111 (internal compiler confusion about runtime checks on
5097 FUNCTION types) was fixed by Alexey Dejneka.
5098 * Some internal cleanups (getting rid of variables which aren't
5099 needed now that the byte interpreter is gone) caused the fasl
5100 file format number to change again.
5102 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5103 * major incompatible change: The default fasl file extension, i.e. the
5104 default extension for files produced by COMPILE-FILE, has changed
5105 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5107 ** There are many changes in the implementation of the compiler.
5108 SBCL is now essentially a compiler-only implementation of ANSI
5109 Common Lisp. EVAL still "interprets" a few special cases, but
5110 almost all the interesting cases are handled by creating
5111 a LAMBDA expression, calling COMPILE on it, then calling
5112 FUNCALL on the result.
5113 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5114 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5115 Since the code is newer, there might still be some new bugs
5116 (though not as many as before Martin Atzmueller's fixes:-). But
5117 the new code is substantially simpler and clearer, and hopefully
5118 any remaining bugs will be simpler, less fundamental, and more
5119 fixable then the bugs in the old code.
5120 ** The revised compiler is still a little unsteady on its feet.
5122 *** The debugging information it produces (particularly the names
5123 of FUNCTION objects) is sometimes much less useful than what
5124 the old compiler produced.
5125 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5126 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5127 within a MACROLET) has been temporarily weakened.
5128 ** There are new compiler optimizations for various functions:
5129 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5130 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5131 *** the math functions TRUNCATE, FLOOR, and CEILING
5132 *** the function-of-all-trades COERCE
5133 Mostly these should be transparent, but there's one
5134 potentially-annoying problem (bug 117): when the compiler
5135 inline-expands a function and does type analysis on the result,
5136 it can create control paths which have type mismatches, and
5137 when it can't prove that those control paths aren't taken,
5138 it will issue WARNINGs about the type mismatches. This is
5139 a particular problem in practice for the new sequence functions.
5140 It's not clear how this should be fixed, and for now, a
5141 workaround is given in the entry for 117 in the BUGS file.
5142 ** (Because of the interaction between the two previous items --
5143 occasional inlining problems and new inline expansions -- some
5144 of the new sequence function optimizations won't really kick in
5145 completely until debugging information, and then inlining, are
5146 straightened out in some future version.)
5147 * minor incompatible changes:
5148 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5149 DIRECTORY no longer implicitly promotes NIL slots of its
5150 pathname argument to :WILD. In particular, when you ask for the
5151 contents of a directory (which you used to be able to do without
5152 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5153 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5154 ** changes in behavior that ANSI explicitly defines to be
5155 implementation dependent:
5156 *** The new compiler-only implementation still conforms with ANSI,
5157 but acts a little different than before. Besides the obvious
5158 changes in performance tradeoffs (that the cost per form passed
5159 to EVAL has gone up, and the cost per form executed by EVAL
5160 has gone down), the behavior of the system changes a little
5161 because there are no longer any interpreted function objects.
5162 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5163 e.g. doing COMPILE on the output of interactive DEFUN is
5165 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5167 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5168 has changed from (:CL) to NIL.
5169 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5170 e.g. #\Newline and #\Tab, don't have names specified in the
5171 ANSI Common Lisp standard, is now based on their ASCII symbolic
5172 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5173 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5174 are no longer used for output.
5175 ** changes in internal implementation constants:
5176 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5177 4 million. (If your application spends a lot of time GCing and
5178 you have a lot of RAM, you might want to experiment with
5179 increasing it even more.)
5180 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5181 However, almost all old code should still continue to work without
5182 immediate update, as SB-C-CALL is now a (deprecated) nickname
5184 ** Old operator names in the style DEF-FOO are now deprecated in
5185 favor of new corresponding names DEFINE-FOO, for consistency with
5186 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5187 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5188 internal symbols, but a few supported extensions like
5189 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5190 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5191 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5192 etc. as you get deeper into recursive calls to the debugger
5193 command loop, instead of the old "5]", "5]]", "5]]]"
5194 sequence. (I was motivated to do this when squabbles between
5195 ILISP and SBCL left me very deeply nested in the debugger. In the
5196 short term, this change will probably provoke more ILISP/SBCL
5197 squabbles, but hopefully it will be an improvement in the long run.)
5198 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5199 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5200 function, since declaiming return types involving aliens is
5201 (1) annoyingly messy to do by hand and (2) vital to efficient
5202 compilation of code which calls such functions.
5203 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5204 longer reexported by the SB-EXT package. They're solely useful
5205 for alien code, so it seems more logical that you should get
5206 them from the SB-ALIEN package, not in SB-EXT.
5207 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5208 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5209 features. Instead, the code that they used to control is always
5210 built into the system.
5211 * many other bug fixes
5212 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5213 advantage of the new EVAL-WHEN stuff and to clean them up in
5214 general, and they are now more ANSI-compliant in a number of
5215 ways. Martin Atzmueller is responsible for a lot of this.
5216 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5218 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5219 *** correct ERROR type for various file operations
5220 *** some fixes for Lisp streams
5221 *** DEFMETHOD syntax checking
5222 *** changing old weird representation of debug information as
5223 strings (which, among their other deficiencies, don't transform
5224 correctly when you rename packages, and don't change their
5225 print representation when you change things like *PACKAGE*
5226 and *PRINT-LENGTH*) to symbols and lists of symbols
5227 He also made several improvements and fixed several bugs in DESCRIBE.
5228 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5230 *** misbehavior of WRITE-STRING/WRITE-LINE
5231 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5232 and several other LOOP problems as well
5233 *** DIRECTORY when similar filenames are present
5234 *** DEFGENERIC with :METHOD options
5235 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5236 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5237 *** argument ordering in FIND with :TEST option
5238 *** mishandled package designator argument in APROPOS-LIST
5239 *** various problems in the backquote readmacro
5240 *** a bug in APROPOS
5241 *** probably some others that I'm not describing very well here,
5242 since the CVS log documents them by reference to sbcl-devel
5243 messages, and the SourceForge archives aren't working well.:-(
5244 ** Dan Barlow improved the Alpha port (and is making progress on the
5245 PPC port, for those of you who think different).
5246 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5247 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5248 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5249 continues to work on the SPARC port (for those of you in a position
5250 to look down upon our little PC-compatible boxes from a great height).
5251 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5252 and uses that copy, rather than the current dynamic value, when
5253 it's trying to decide whether to truncate output. Thus e.g.
5254 (let ((*print-lines* 50))
5255 (pprint-logical-block (stream nil)
5257 (let ((*print-lines* 8))
5258 (print (aref possiblybigthings i) stream)))))
5259 should now truncate the logical block only at 50 lines, instead of
5260 often truncating it at 8 lines, as it did before.
5261 * The doc/cmucl/ directory, containing old CMU CL documentation
5262 from the time of the fork, is no longer part of the base system.
5263 SourceForge has shut down its anonymous FTP service, and with it
5264 my original plan for distributing the old CMU CL documentation
5265 there. For now, if you need these files you can download an old
5266 SBCL source release and extract them from it.
5267 * The fasl file version number changed again, for dozens of reasons,
5268 some of which are apparent above.
5270 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5271 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5272 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5273 patch, so that DISASSEMBLE output is much nicer.
5274 * The code in the SB-PROFILE package now seems reasonably stable.
5275 I still haven't decided what the final interface should look like
5276 (I'd like PROFILE to interact cleanly with TRACE, since both
5277 facilities use function encapsulation) but if you have a need
5278 for profiling now, you can probably use it successfully with
5279 the current CMU-CL-style interface.
5280 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5281 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5282 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5283 link now returns the dangling link itself, and for similar
5284 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5285 link itself. (In these cases the old code signalled an error and
5286 looped endlessly, respectively.) Thus, DIRECTORY now works even
5287 in the presence of dangling and cyclic symbolic links.
5288 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5289 is now a supported extension again, since the consensus on
5290 sbcl-devel was that it can be useful for ordinary development
5291 work, not just for debugging SBCL itself.
5292 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5293 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5294 that currently-defined functions might be redefined later with
5295 different return types.
5296 * Hash tables can be printed readably, as inspired by CMU CL code
5297 of Eric Marsden and SBCL code of Martin Atzmueller.
5298 * better error handling in CLOS method combination, thanks to
5299 Martin Atzmueller porting Pierre Mai's CMU CL patches
5300 * more overflow fixes for >16Mbyte I/O buffers
5301 * A bug in READ has been fixed, so that now a single Ctrl-D
5302 character suffices to cause end-of-file on character streams.
5303 In particular, now you only need one Ctrl-D at the command
5304 line (not two) to exit SBCL.
5305 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5307 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5308 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5309 does the right thing.
5310 * The implementation of some type tests, especially for CONDITION
5311 types, is now tidier and maybe faster, due to CMU CL code
5312 originally by Douglas Crosher, ported by Martin Atzmueller.
5313 * Some math functions have been fixed, and there are new
5314 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5315 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5316 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5317 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5318 likely to be built into sbcl-0.7.0.)
5319 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5320 CL, ported to SBCL by Martin Atzmueller)
5321 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5322 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5323 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5324 * There's a new slam.sh hack to shorten the edit/compile/debug
5325 cycle for low-level changes to SBCL itself, and a new
5326 :SB-AFTER-XC-CORE target feature to control the generation of
5327 the after-xc.core file needed by slam.sh.
5328 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5329 COMPILE-FILE is no longer supported, so that now every function
5330 gets an entry point, so that block compilation looks a little
5331 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5332 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5333 returns the number of bytes consed since the system started,
5334 rather than the number consed since the first time the function
5335 was called. (The new definition parallels ANSI functions like
5336 CL:GET-INTERNAL-RUN-TIME.)
5337 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5338 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5339 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5340 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5341 * Fasl file version numbers are now independent of the target CPU,
5342 since historically most system changes which required version
5343 number changes have affected all CPUs equally. Similarly,
5344 the byte fasl file version is now equal to the ordinary
5347 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5348 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5349 is no longer recognized. I apologize for this, because it was
5350 listed in SB-EXT as a supported extension, but I found that
5351 its existing behavior was poorly specified, as well as incorrectly
5352 specified, and it looked like too much of a mess to straighten it
5353 out. I have enough on my hands trying to get ANSI stuff to work..
5354 * many patches ported from CMU CL by Martin Atzmueller, with
5355 half a dozen bug fixes in pretty-printing and the debugger, and
5356 half a dozen others elsewhere
5357 * fixed bug 13: Floating point infinities are now supported again.
5358 They might still be a little bit flaky, but thanks to bug reports
5359 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5360 as flaky as they were.
5361 * The --noprogrammer command line option is now supported. (Its
5362 behavior is slightly different in detail from what the old man
5363 page claimed it would do, but it's still appropriate under the
5364 same circumstances that the man page talks about.)
5365 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5366 are now supported, and enabled by default. Thus, the compiler can
5367 handle many floating point and complex operations much less
5368 inefficiently. (Thus e.g. you can implement a complex FFT
5370 * The compiler now detects type mismatches between DECLAIM FTYPE
5371 and DEFUN better, and implements CHECK-TYPE more correctly, and
5372 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5373 thanks to patches from Martin Atzmueller.
5374 * various fixes to make the cross-compiler more portable to
5375 ANSI-conforming-but-different cross-compilation hosts (notably
5376 Lispworks for Windows, following bug reports from Arthur Lemmens)
5377 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5378 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5379 fixed thanks to Pierre Mai's CMU CL patches.
5380 * fixes to keep the system from overflowing internal counters when
5381 it tries to use i/o buffers larger than 16M bytes
5382 * fixed bug 45a: Various internal functions required to support
5383 complex special functions have been merged from CMU CL sources.
5384 (When I was first setting up SBCL, I misunderstood a compile-time
5385 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5386 * improved support for type intersection and union, fixing bug 12
5387 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5388 more obscure bugs as well
5389 * some steps toward byte-compiling non-performance-critical
5390 parts of the system, courtesy of patches from Martin Atzmueller
5391 * Christophe Rhodes has made some debian packages of sbcl at
5392 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5393 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5394 stable, but are nonetheless usable. When he's ready, I'd be happy
5395 to add them to the SourceForge "File Releases" section. (And if
5396 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5397 * new fasl file format version number (because of changes in
5398 internal representation of (OR ..) types to accommodate the new
5399 support for (AND ..) types, among other things)
5401 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5402 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5404 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5406 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5407 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5408 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5409 * DESCRIBE now works on structure objects again.
5410 * Most function call argument type mismatches are now handled as
5411 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5412 know whether the function will be redefined before the call is
5413 executed. (The compiler could flag local calls with full WARNINGs,
5414 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5415 it doesn't keep track of enough information to know whether calls
5416 are local in this sense.)
5417 * Compiler output is now more verbose, with messages truncated
5418 later than before. (There should be some supported way for users
5419 to override the default verbosity, but I haven't decided how to
5420 provide it yet, so this behavior is still controlled by the internal
5421 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5422 src/compiler/ir1util.lisp.)
5423 * Fasl file format version numbers have increased again, because
5424 support for the Gray streams extension changes the layout of the
5425 system's STREAM objects.
5426 * The Gray subclassable streams extension now works, thanks to a
5427 patch from Martin Atzmueller.
5428 * The full LOAD-FOREIGN extension (not just the primitive
5429 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5430 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5431 but like most other programs, it defaults to copying the Unix
5432 environment from the original process instead of starting the
5433 new process in an empty environment.
5434 * Extensions which manipulate the Unix environment now support
5435 an :ENVIRONMENT keyword option which doesn't smash case or
5436 do other bad things. The CMU-CL-style :ENV option is retained
5437 for porting convenience.
5438 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5439 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5441 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5443 * A patch from Martin Atzmueller seems to have solved the SIGINT
5444 problem, and as far as we know, signal-handling now works cleanly.
5445 (If you find any new bugs, please report them!)
5446 * The system no longer defaults Lisp source file names to types
5447 ".l", ".cl", or ".lsp", but only to ".lisp".
5448 * The compiler no longer uses special default file extensions for
5449 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5450 seems to expect a single default extension for all compiled code,
5451 and there's no compelling reason to try to stretch the standard
5452 to allow two different extensions.) Instead, byte-compiled files
5453 default to the same extension as native-compiled files.
5454 * Fasl file format version numbers have increased again, because
5455 a rearrangement of internal implementation packages made some
5456 dumped symbols in old fasl files unreadable in new cores.
5457 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5458 many fewer weird special cases.
5459 * Bug #17 (differing COMPILE-FILE behavior between logical and
5460 physical pathnames) has been fixed, and some related misbehavior too,
5461 thanks to a patch from Martin Atzmueller.
5462 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5463 by Tim Moore, ported to SBCL by Martin Atzmueller.
5464 * Martin Atzmueller fixed several filesystem-related problems,
5465 including bug #36, in part by porting CMU CL patches, which were
5466 written in part by Paul Werkowski.
5467 * More compiler warnings in src/runtime/ are gone, thanks to
5468 more patches from Martin Atzmueller.
5469 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5472 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5474 * DESCRIBE now works on CONDITION objects.
5475 * The debugger now handles errors which arise when trying to print
5476 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5478 * The build system now uses an additional file, customize-target-features.lisp,
5479 to allow local modifications to the target *FEATURES* list. (The point of
5480 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5481 debugging features enabled, without having to worry about propagating it
5482 into everyone's system when I do a "cvs update".) When no
5483 customize-target-features.lisp file exists, the target *FEATURES* list
5484 should be constructed the same way as before.
5485 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5486 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5487 warn about behavior which is undefined under the ANSI spec. Note: This
5488 is specified by ANSI, but it's not very popular with programmers.
5489 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5490 macro in the SBCL sources for an example of a workaround which you
5491 might use to make portable ANSI-standard code which does what you want.
5492 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5493 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5494 when it's used as a non-toplevel form. (This is required in order
5495 to implement the DEFCONSTANT-EQX macro.)
5496 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5497 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5498 funny things, due to bugs in the implementation of EVAL-WHEN
5499 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5500 non-toplevel DEFCONSTANTs are uncommon.)
5501 * The core file version number and fasl file version number have been
5502 incremented, because the old noncompliant DEFCONSTANT behavior involved
5503 calling functions which no longer exist, and because I also took the
5504 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5505 * fixed bug 1 (error handling before read-eval-print loop starts), and
5506 redid debugger restarts and related debugger commands somewhat while
5508 ** The QUIT debugger command is gone, since it did something
5509 rather different than the SB-EXT:QUIT command, and since it never
5510 worked properly outside the main toplevel read/eval/print loop.
5511 Invoking the new TOPLEVEL restart provides the same functionality.
5512 ** The GO debugger command is also gone, since you can just invoke
5513 the CONTINUE restart directly instead.
5514 ** The TOP debugger command is also gone, since it's redundant with the
5515 FRAME 0 command, and since it interfered with abbreviations for the
5517 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5519 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5520 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5521 some porting work by Martin Atzmueller)
5522 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5523 with a boatload of patches which he ported to SBCL. Now that those
5525 ** The system tries to make sure that its low-priority messages
5526 are prefixed by semicolons, to help people who like to use
5527 syntax highlighting in their ILISP buffer. (This patch
5528 was originally due to Raymond Toy.)
5529 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5530 patches originally written by Raymond Toy.
5531 ** The compiler understands coercion between single-value and
5532 multiple-VALUES type expressions better, getting rid of some very
5533 weird behavior, thanks to patches originally by Robert MacLachlan
5534 and Douglas Crosher.
5535 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5536 lambda lists, thanks to a patch originally by Pierre Mai.
5537 ** The system no longer bogusly warns about "abbreviated type
5539 ** The compiler gets less confused by inlining and RETURN-FROM,
5540 thanks to some patches originally by Tim Moore.
5541 ** The system no longer hangs when dumping circular lists to fasl
5542 files, thanks to a patch originally from Douglas Crosher.
5543 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5544 undefined function error.
5545 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5546 in structure slot initforms) for now, documented workaround instead:-|
5547 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5548 * fixed bug 5: added stubs for various Gray stream functions called
5549 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5550 installed, at least appropriate type errors are generated
5551 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5552 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5553 consistently in DEFMETHOD forms.
5554 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5555 it doesn't seem to affect SBCL after all
5556 * The C runtime system now builds with better optimization and many
5557 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5559 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5561 * The system is now under CVS at SourceForge (instead of the
5562 CVS repository on my home machine).
5563 * The new signal handling code has been tweaked to treat register
5564 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5565 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5566 downstream, e.g. in debug-int.lisp, has implicit dependencies
5567 on the unsignedness of integer representation of machine words,
5568 and that caused the system to bomb out with infinite regress
5569 when trying to recover from type errors involving signed values,
5570 e.g. (BUTLAST '(1 2 3) -1).)
5571 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5572 (This was one of the bugs Peter Van Eynde reported back in July.)
5573 * The system now uses code inspired by Colin Walters' O(N)
5574 implementation of MAP (from the cmucl-imp@cons.org mailing
5575 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5576 inline the MAP operation, and there is more than one
5577 sequence argument to the MAP call (so that it can't just
5578 do ETYPECASE once and for all based on the type of the
5579 single sequence argument). (The old non-inline implementation
5580 of the general M-argument sequence-of-length-N case required
5581 O(M*N*N) time when any of the sequence arguments were LISTs.)
5582 * The QUIT :UNIX-CODE keyword argument has been renamed to
5583 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5584 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5586 * Raymond Wiker's patches to port dynamic loading from Linux to
5587 FreeBSD have been added.
5588 * The BUGS file is now more nearly up to date, thanks in large part
5589 to Martin Atzmueller's review of it.
5590 * The debugger now flushes standard output streams before it begins
5591 its output ("debugger invoked" and so forth).
5592 * The core version number and fasl file version number have both
5593 been incremented, because of incompatible changes in the layout
5595 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5596 used to not be called for a saved Lisp image.)
5597 * Martin Atzmueller's version of a patch to fix a compiler crash,
5598 as posted on sbcl-devel 13 September 2000, has been installed.
5599 * Instead of installing Martin Atzmueller's patch for the
5600 compiler transform for SUBSEQ, I deleted the compiler transform,
5601 and transforms for some similar consing operations.
5602 * A bug in signal handling which kept TRACE from working on OpenBSD
5604 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5605 away by constant folding
5606 * The system now defines its address space constants in one place
5607 (in the Lisp sources), and propagates them automatically elsewhere
5608 (through GENESIS and the sbcl.h file). Therefore, patching the
5609 address map is less unnecessarily tedious and error-prone. The
5610 Lisp names of address space constants have also been systematized.
5611 * CVS tags like dollar-Header-dollar have been removed from
5612 the sources, because they have never saved me trouble and
5613 they've been source of trouble working with patches and other
5614 diff-related operations.
5615 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5616 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5618 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5620 * The system has been ported to OpenBSD.
5621 * The system now compiles with a simple "sh make.sh" on the systems
5622 that it's supported on. I.e., now you no longer need to tweak
5623 text in the target-features.lisp-expr and symlinks in src/runtime/
5624 by hand, the make.sh takes care of it for you.
5625 * The system is no longer so grossly inefficient when compiling code
5626 involving vectors implemented as general (not simple) vectors (VECTOR T),
5627 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5628 which dares to use the various sequence functions on non-simple
5629 vectors, takes less of a performance hit.
5630 * There is now a primitive type predicate VECTOR-T-P
5631 to test for the (VECTOR T) type, so that e.g.
5632 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5633 can now be compiled with some semblance of efficiency. (The old code
5634 turned the type declaration into a full call to %TYPEP at runtime!)
5635 * AREF on (VECTOR T) is still not fast, since it's still compiled
5636 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5637 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5638 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5639 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5640 without making full calls to SUBTYPEP at runtime.
5641 (Some analogous efficiency issues for non-simple vectors specialized to
5642 element types other than T, or for non-simple multidimensional arrays,
5643 have not been addressed. They could almost certainly be handled the
5644 same way if anyone is motivated to do so.)
5645 * The changes in array handling break binary compatibility, so
5646 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5647 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5648 instead of (VALUES T T).
5649 * By following the instructions that Dan Barlow posted to sbcl-devel
5650 on 2 July 2000, I was able to enable primitive dynamic object
5651 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5652 functionality is not implemented (since it calls ld to resolve
5653 library references automatically, requiring RUN-PROGRAM for its
5654 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5655 try to resolve library references) is now supported.
5656 * The system now flushes the standard output streams when it terminates,
5657 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5658 them at several other probably-convenient times, e.g. in each pass of
5659 the toplevel read-eval-print loop, and after evaluating a form given
5660 as an "--eval" command-line option. (These changes were motivated by a
5661 discussion of stream flushing issues on cmucl-imp in August 2000.)
5662 * The source transform for TYPEP of array types no longer assumes
5663 that an array whose element type is a not-yet-defined type
5664 is implemented as an array of T, but instead punts, so that the
5665 type will be interpreted at runtime.
5666 * There is now some support for cross-compiling in make.sh: each of
5667 the phases of make.sh has its own script. (This should be transparent
5668 to people doing ordinary, non-cross-compile builds.)
5669 * Since my laptop doesn't have hundreds of megabytes of memory like
5670 my desktop machine, I became more motivated to do some items on
5671 my to-do list in order to reduce the size of the system a little:
5672 ** Arrange for various needed-only-at-cold-init things to be
5673 uninterned after cold init. To support this, those things have
5674 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5675 symbols with such names are now uninterned after cold init).
5676 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5677 fasl files for cold load.
5678 ** Remove the old compiler structure pooling code (which used to
5679 be conditional on the target feature :SB-ALLOC) completely.
5680 ** Redo the representation of some data in cold init to be more compact.
5681 (I also looked into supporting byte compiled code at bootstrap time,
5682 which would probably reduce the size of the system a lot, but that
5683 looked too complicated, so I punted for now.)
5684 * The maximum signal nesting depth in the src/runtime/ support code has
5685 been reduced from 4096 to 256. (I don't know any reason for the very
5686 large old value. If the new smaller value turns out to break something,
5687 I'll probably just bump it back up.)
5688 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5690 * Many, many bugs reported by Peter Van Eynde have been added to
5691 the BUGS list; some have even been fixed.
5692 * While enabling dynamic object file loading, I tried to make the
5693 code easier to understand, renaming various functions and variables
5694 with less ambiguous names, and changing some function calling
5695 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5696 * While trying to figure out how to do the OpenBSD port, I tried to
5697 clean up some of the code in src/runtime/. In particular, I dropped
5698 support for non-POSIX signal handling, added various comments,
5699 tweaked the code to reduce the number of compilation warnings, and
5700 renamed some files to increase consistency.
5701 * To support the new automatic configuration functionality in make.sh,
5702 the source file target-features.lisp-expr has been replaced with the
5703 source file base-target-features.lisp-expr and the machine-generated
5704 file local-target-features.lisp-expr.
5705 * fixed a stupid quoting error in make.sh so that using CMU CL
5706 "lisp -batch" as cross-compilation host works again
5708 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5710 * DESCRIBE no longer tries to call itself recursively to describe
5711 bound/fbound values, so that it no longer fails on symbols which are
5712 bound to themselves (like keywords, T, and NIL).
5713 * DESCRIBE now works on generic functions.
5714 * The printer now prints less-screwed-up representations of closures
5715 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5716 * A private symbol is used instead of the :EMPTY keyword previously
5717 used to mark empty slots in hash tables. Thus
5718 (DEFVAR *HT* (MAKE-HASH-TABLE))
5719 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5720 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5721 now does what ANSI says that it should. (You can still get
5722 similar noncompliant behavior if bang on the hash table
5723 implementation with all the symbols you get back from
5724 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5725 This breaks binary compatibility, since tests for equality to
5726 :EMPTY are wired into things like the macroexpansion of
5727 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5729 * There's now a minimal placeholder implementation for CL:STEP,
5730 as required by ANSI.
5731 * An obscure bug in the interaction of the normal compiler, the byte
5732 compiler, inlining, and structure predicates has been patched
5733 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5734 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5736 * Missing ordinary arguments in a macro call are now detected even
5737 when the macro lambda list contains &KEY or &REST.
5738 * The debugger no longer complains about encountering the top of the
5739 stack when you type "FRAME 0" to explicitly instruct it to go to
5740 the top of the stack. And it now prints the frame you request even
5741 if it's the current frame (instead of saying "You are here.").
5742 * As specified by ANSI, the system now always prints keywords
5743 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5745 * The default initial SIZE of HASH-TABLEs is now smaller.
5746 * Type information from CLOS class dispatch is now propagated
5747 into DEFMETHOD bodies, so that e.g.
5748 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5750 is now basically equivalent to
5751 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5752 (DECLARE (TYPE SINGLE-FLOAT X))
5754 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5755 operation, without having to do run-time type dispatch.
5756 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5757 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5758 * Since I don't seem to be making big file reorganizations very often
5759 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5760 is overflowing my ability to conveniently back them up), I've finally
5761 checked the system into CVS. (The CVS repository is on my home system,
5762 not at SourceForge -- putting it on SourceForge might come later.)
5763 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5764 high-level GC-NOTIFY-FOO functions send their output. (There's
5765 still very little control of where low-level verbose GC functions
5766 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5767 less than it used to -- the GC-NOTIFY-FOO functions are now under
5768 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5769 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5770 in only one place in the source code, and propagates it automatically
5771 everywhere that it's needed. Thus e.g. when I bump the version from
5772 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5773 * The C source files now include boilerplate legalese and documentation
5774 at the head of each file (just as the Lisp source files already did).
5775 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5776 to his page will be replaced with a link to his new CLiki service.
5778 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5780 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5781 * The build process now looks for GNU make under the default name "gmake",
5782 instead of "make" as it used to. If GNU make is not available as "gmake"
5783 on your system, you can change this default behavior by setting the
5784 GNUMAKE environment variable.
5785 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5786 can build without error under CMU CL.
5788 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5790 * There is now a partial SBCL user manual (with some new text and some
5791 text cribbed from the CMU CL manual).
5792 * The beginnings of a profiler have been added (starting with the
5793 CMU CL profiler and simplifying and cleaning up). Eventually the
5794 main interface should be through the TRACE macro, but for now,
5795 it's still accessed through vaguely CMU-CL-style functions and macros
5796 exported from the package SB-PROFILE.
5797 * Some problems left over from porting CMU CL to the new
5798 cross-compilation bootstrap process have been cleaned up:
5799 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5800 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5801 part when getting rid of the compiler *BACKEND* stuff.)
5802 ** The value of *NULL-TYPE* was screwed up, because it was
5803 being initialized before the type system knew the final
5804 definition of the 'NULL type. This screwed up several key
5805 optimizations in the compiler, causing inefficiency in all sorts
5806 of places. (I found it because I wanted to understand why
5807 GET-INTERNAL-RUN-TIME was consing.)
5808 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5809 PROCLAIM FTYPE information. Unfortunately this broke binary
5810 compatibility again, since now the forms output by DEFGENERIC
5811 to refer to functions which didn't exist in 0.6.3.
5812 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5813 can use the new (as of 0.6.3) transform for SOME into MAP into
5815 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5816 values to (INTEGER 0 1000000), so that the time code will no longer
5817 occasionally get blown up by Linux returning 1000000 microseconds
5818 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5819 its output conform to the ANSI spec. (Alas, this makes its output
5820 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5821 * A full call to MAP NIL with a single sequence argument no longer conses.
5822 * fixes to problems pointed out by Martin Atzmueller:
5823 * The manual page no longer talks about multiprocessing as though
5824 it were currently supported.
5825 * The ILISP support patches have been removed from the distribution,
5826 because as of version 5.10.1, ILISP now supports SBCL without us
5827 having to maintain patches.
5828 * added a modified version of Raymond Toy's recent CMU CL patch for
5829 EQUALP comparison of HASH-TABLE
5831 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5833 * The system still can't cross-compile itself with
5834 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5835 entails), but at least it can compile more of itself that way
5836 than it used to be able to, and various buglets which were uncovered
5837 by trying to cross-compile itself that way have now been fixed.
5838 * This release breaks binary compatibility again. This time
5839 at least I've incremented the FASL file format version to 2, so that the
5840 problem can be detected reliably instead of just causing weird errors.
5841 * various new style warnings:
5842 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5843 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5844 ** using the lexical binding of a variable named in the *FOO* style
5845 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5846 as specified by ANSI.
5847 * *RANDOM-STATE* is no longer automatically initialized from
5848 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5849 default behavior of the system is to repeat its behavior every time
5850 it's run. If you'd like to change this behavior, you can always
5851 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5852 old convention there was no comparably easy way to get the system to
5853 repeat its behavior every time it was run.
5854 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5855 FTYPE declarations has been removed, in favor of their ANSI
5856 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5857 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5858 the types of their sequence arguments can be determined at compile time.
5859 This is done through a new open code expansion for MAP which eliminates
5860 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5861 argument types can be determined at compile time.
5862 * The optimizer now transforms COERCE into an identity operation when it
5863 can prove that the coerced object is already of the correct type. (This
5864 can be a win for machine generated code, including the output of other
5865 optimization transforms, such as the MAP transform above.)
5866 * Credit information has been moved from source file headers into CREDITS.
5867 * Source file headers have been made more standard.
5868 * The CASE macro now compiles without complaining even when it has
5871 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5873 * (Note that the way that the PCL macroexpansions were rewritten
5874 to accommodate the change in DEFGENERIC below breaks binary
5875 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5876 not run under sbcl-0.6.2. Once we get out of alpha releases,
5877 i.e. hit release 1.0.0, we'll probably try to maintain binary
5878 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5879 and sbcl-1.4.4. Until then, however, it might be fairly common
5880 for maintenance releases to break binary compatibility.)
5881 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5883 * The reporting of unhandled signals has been changed to print some
5884 explanatory text as well as the report form. (Previously only
5885 the report form was printed.)
5886 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5887 it defines, so that the compiler no longer issues undefined function
5888 warnings for compiled-but-not-yet-loaded generic functions.
5889 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5890 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5891 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5892 section of the ANSI spec are supported.
5893 * The "" nickname for the "KEYWORD" package has been removed.
5894 The reader still handles symbol tokens which begin with a package marker
5895 as keywords, but it doesn't expose its mechanism for doing so in the
5896 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5897 * The system now issues STYLE-WARNINGs for contradictory TYPE
5898 proclamations. (Warnings for contradictory FTYPE proclamations would
5899 be nice too, but those can't be done usefully unless the type system
5900 is made smarter about FUNCTION types.)
5901 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5902 systematized, so that "*target-*.lisp is supposed to exist only on the
5903 target and imply that there's a related file which exists on the
5904 host, and *host-*.lisp is supposed to exist only on the host and imply
5905 that there's a related file which exists on the target. This involves a
5906 lot of renaming. Hopefully the acute confusion caused by the renaming
5907 will be justified by the reduction in chronic confusion..
5908 ** runtime-type.lisp -> early-target-type.lisp
5909 ** target-type.lisp -> late-target-type.lisp
5910 ** early-host-format.lisp -> early-format.lisp
5911 ** late-host-format.lisp -> late-format.lisp
5912 ** host-error.lisp -> misc-error.lisp
5913 ** early-error.lisp -> early-target-error.lisp
5914 ** late-error.lisp -> late-target-error.lisp
5915 ** host-defboot.lisp -> early-defboot.lisp
5916 ** code/misc.lisp -> code/target-misc.lisp
5917 ** code/host-misc.lisp -> code/misc.lisp
5918 ** code/numbers.lisp -> code/target-numbers.lisp
5919 ** code/early-numbers.lisp -> numbers.lisp
5920 ** early-host-type.lisp -> early-type.lisp
5921 ** late-host-type.lisp -> late-type.lisp
5922 ** host-typep.lisp -> typep.lisp
5923 ** load.lisp -> target-load.lisp
5924 ** host-load.lisp -> load.lisp
5925 ** host-disassem.lisp -> disassem.lisp
5926 ** host-insts.lisp -> insts.lisp
5927 ** byte-comp.lisp -> target-byte-comp.lisp
5928 ** host-byte-comp.lisp -> byte-comp.lisp
5929 ** host-signal.lisp -> signal.lisp
5930 ** host-defstruct.lisp -> defstruct.lisp
5931 ** late-target-type.lisp -> deftypes-for-target.lisp
5932 Furthermore, several other previously target-only files foo.lisp (e.g.
5933 hash-table.lisp and random.lisp) have been split into a target-and-host
5934 foo.lisp file and a target-only target-foo.lisp file, with their key type
5935 definitions in the target-and-host part, so that the cross-compiler will
5936 know more about target types.
5937 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5938 gone away. In their place are various *BACKEND-FOO* variables
5939 corresponding to the slots of the old structure.
5940 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5941 into the target SBCL has been fixed.
5942 * The chill.lisp system for loading cold code into a running SBCL
5944 * Support for the CMU CL "scavenger hook" extension has been removed.
5945 (It was undocumented and unused in the CMU CL sources that SBCL was
5946 derived from, and stale in sbcl-0.6.1.)
5947 * Various errors in the cross-compiler type system were detected
5948 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5949 (enabling various consistency checks). Many of them were fixed,
5950 but some hard problems remain, so the compiler is back to
5951 running without *TYPE-SYSTEM-INITIALIZED* for now.
5952 * As part of the cross-compiler type system cleanup, I implemented
5953 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5954 * I have started adding UNCROSS calls throughout the type system
5955 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5956 on cross-compiler input files will be able to go away, and various
5958 * CONSTANTP now returns true for quoted forms (as explicitly required
5961 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5963 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5964 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5965 (MAKE-LIST -1). In the longer term, it ought to become true
5966 that declarations are assertions even at SAFETY 1. For now, it's not
5967 quite true even at SAFETY 3, but it's at least more nearly true..
5968 (Note that this change seems to increases the size of the system by
5969 O(5%) and to decrease the speed of the compiler by 20% or more.)
5970 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5971 for the problem of printing dozens of lines of distracting information
5972 about low-level system machinery as part of the top stack frame
5973 on entry to the debugger when an undefined function was called.
5974 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5975 is not reset to COMMON-LISP-USER.
5976 * Compilation of stuff related to dyncount.lisp has been made conditional
5977 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5978 smaller. The various dyncount-related symbols have been moved into
5979 a new "SB-DYNCOUNT" package.
5980 * tty-inspect.lisp has been renamed to inspect.lisp.
5981 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5982 feature has gone away. (When we eventually port to other flavors of
5983 libc and/or Unix, we'll try to make the differences between flavors
5984 invisible at the user level.)
5985 * Various other *FEATURES* tags, and/or their associated conditionals,
5986 have been removed if obsolescent, or given better documentation, or
5987 sometimes given more-mnemonic names.
5989 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5991 * tidied up "make.sh" script
5992 * tidied up system directory structure
5993 * better "clean.sh" behavior
5994 * added doc/FOR-CMUCL-DEVELOPERS
5995 * many many small tweaks to output format, e.g. removing possibly-confusing
5996 trailing #\. character in DESCRIBE-INSTANCE
5997 * (EQUALP #\A 'A) no longer signals an error.
5998 * new hashing code, including EQUALP hashing
5999 * tidied up Lisp initialization and toplevel
6000 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6001 * command line argument processing
6002 * added POSIX-GETENV function to deal with Unix-ish environment variables
6003 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6004 terminating SBCL on EOF
6005 * non-verbose GC by default
6006 * There is no more "sbcl" shell script; the sbcl file is now the C
6007 runtime executable (just like CMU CL).
6008 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6010 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6011 symbol and package information as Lisp native symbol and package objects
6012 instead of strings naming symbols and strings naming packages. This way,
6013 whenever packages are renamed (as in warm init), debug information is
6014 transformed along with everything else.
6015 * tweaked the optimization policy declarations which control the building
6016 of SBCL itself. Now, among other things, the system no longer saves
6017 source location debugging information. (This helps two problems at once
6018 by reducing SBCL size and by keeping SBCL from trying to look for its
6019 sources -- which may not exist -- when reporting errors.)
6020 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6021 debugging and testing purposes
6022 * cleaned up printing, making the printer call PRINT-OBJECT for
6023 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6024 methods, giving nearly-ANSI behavior
6025 * converted almost all special variables to use *FOO* naming convention
6026 * deleted PARSE-TIME functionality, since it can be done portably
6027 * moved some files out of cold init into warm init
6028 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6030 * regularized formatting of source files
6031 * added an install.sh script
6032 * fixed ridiculous memory usage of cross-compiler by making
6033 compiler/alloc.lisp not try to do pooling unless it can hook
6034 itself into the GC of the cross-compilation host. Now the system
6035 builds nicely on my old laptop.
6036 * added :SB-ALLOC in target-features.lisp-expr
6037 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6038 was not implemented)
6039 * re-did condition handling and note reporting in the compiler. Notes
6040 are no longer handled by signalling conditions. Style warnings
6041 and warnings are handled more correctly and reported in such a way
6042 that it's easy to find one or the other in your output (so that you
6043 can e.g. figure out which of many problems caused COMPILE-FILE to
6045 * changed the severity of several compiler warnings from full WARNING
6046 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6047 compiler note reporting so that it doesn't use the condition system
6048 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6049 COMPILE-FILE command)
6050 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6051 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6052 no longer supported, since their implementation was deeply intertwingled
6053 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6054 * removed bogus "support" for compiler macros named (SETF FOO), and
6055 removed the compiler macro for SETF INFO (but only after making a fool
6056 of myself on the cmucl-imp mailing list by posting a bogus patch for
6057 DEFINE-COMPILER-MACRO..)
6058 * Compiled files containing forms which have side effects on the Lisp
6059 reader (such as DEFPACKAGE forms) are now handled more correctly.
6060 (Compiler queuing of top level lambdas has been suppressed by setting
6061 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6062 * deleted various currently-unused source files, e.g. gengc.lisp. They
6063 may be added back at some point e.g. when porting to other architectures,
6064 but until they are it's distracting to distribute them and to try to
6066 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6067 there were so many of them they're just distractions, and UNCROSS is
6068 known to be able to handle the current sources
6069 * moved PROFILE functionality into TRACE, so that it will be clear
6070 how the wrapping and unwrapping of functions when you profile them
6071 interacts with the wrapping and unwrapping of functions when you
6072 trace them. (Actually, the functionality isn't there yet, but at least
6073 the interface specification is there. Hopefully, the functionality will
6074 arrive with some future maintenance release.)
6075 * removed host-oops.lisp
6076 * changed signature of QUIT function to allow UNIX-CODE argument
6077 * fixed READ-SEQUENCE bug
6078 * tweaked verbose GC output so that it looks more like the progress
6079 output that ANSI specifies for functions like LOAD
6080 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6081 * added <http://sbcl.sourceforge.com> to the banner information printed by