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 * enhancement: RUN-PROGRAM works with user-defined binary input and output
13 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
14 uninterruptible, as well as blocking reads from socket streams created
15 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
17 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
18 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
19 years, is now no longer supported.
20 * enhancement: read() and write() have been added to SB-POSIX.
21 * enhancement: types of DEFSTRUCT constructors are proclaimed more
22 accurately, allowing better typechecking of call-sites.
23 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
24 are no longer caught. (reverted to pre 1.0.34 behaviour)
25 * optimization: slightly faster ISQRT. (lp#713343)
26 * bug fix: better support for Solaris /bin/sh in sh-based tests.
27 * bug fix: TRACE behaves better when attempting to trace undefined
28 functions. (lp#740717)
29 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
30 to (FUNCALL #'(LAMBDA ...) ...).
31 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
32 a compile-time error. (lp#720382)
33 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
35 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
36 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
37 optimization. (regression from 1.0.45.18/1.0.46.15)
38 * bug fix: package locks did not protects against compile-time side-effects
40 * bug fix: --dynamic-space-size argument is validated more carefully.
42 * bug fix: memory fault from printing a malformed simple-condition.
44 * bug fix: redefining classes so that slot-definition classes change now
45 engages the obsolete instance protocol. (lp#766271)
46 * bug fix: constant improper lists could break source coverage recording.
48 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
51 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
52 * bug fix: fix mach port rights leaks in mach exception handling code on
53 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
55 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
56 * enhancement: redefinition warnings for macros from different files. (lp#434657)
57 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
58 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
59 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
60 processed using EVAL -- now the appropriate toplevel form is reported instead.
61 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
62 declarations. (lp#726331)
63 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
64 that NIL/NULL is excluded from the type.
65 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
67 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
69 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
70 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
71 stack-allocated values out of their dynamic-extent. (lp#310175)
72 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
73 x86-64 builds caused a type-error.
74 * bug fix: calling COMPILE with something else than a lambda-expression as the
75 second argument reports a more sensible error. (lp#718905)
76 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
77 are detected. (lp#520607)
78 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
80 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
81 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
82 methods. (regression from 1.0.45.18)
83 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
84 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
85 * bug fix: several foreign functions accepting string also accepted NIL and
86 consequently caused a memory fault at 0 now signal a type-error instead.
88 * bug fix: under rare circumstances, constraint propagation could rewrite a
89 variable reference to refer to a variable not in scope, causing an error
90 during physical environment analysis when attempting to close over the
92 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
94 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
95 * enhancement: largefile support on Solaris.
96 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
98 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
99 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
101 * optimization: ERROR and CERROR are approximately 5 times faster.
102 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
103 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
104 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
105 up instance creation in those cases.
106 * optimization: arithmetic operations with multiple constant arguments in now
107 have them reduced at compile-time. (lp#676414)
108 * optimization: determining current character position on string-streams for
109 pretty-printing was overly slow.
110 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
111 lifetime analysis to overwrite closed-over variables (lp#681092).
112 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
113 were not handled correctly (lp#713063).
114 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
116 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
117 mistake. (lp#667297).
118 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
119 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
120 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
121 unintern the wrong symbol with the same name. (lp#693796)
122 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
123 making it possible to restore the initial table if it has been messed up.
126 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
127 * enhancement: ~/ and ~user/ are treated specially in pathnames.
128 Refer to documentation for details.
129 * enhancement: ASDF has been updated to version 2.010.
130 * optimization: mutated closed-over variables that are only accessed by
131 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
132 declared to be DYNAMIC-EXTENT) are stored directly in their containing
133 stack frame, rather than allocating a VALUE-CELL (lp#586103).
134 * optimization: UNWIND-PROTECT cleanup functions are now declared
136 * bug fix: backtracing function with &REST arguments now shows the full
137 argument list. (lp#310173)
138 * bug fix: return types for functions with complex lambda-lists are now
139 derived properly (lp#384892)
140 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
141 long string arguments slowed the compiler down to a crawl.
142 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
143 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
144 in the DEFMETHOD body.
145 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
146 messages, being instead replaced with the corresponding function name.
147 * bug fix: don't derive overly complex unions of numeric types for arithmetic
148 operators. (lp#309448)
150 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
151 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
152 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
153 * enhancement: ALLOCATION-INFORMATION also provides the page the object
155 * enhancement: default dynamic-space size can be configured at build-time
156 without touching source, using the --dynamic-space-size argument to make.sh.
157 * enhancement: DESCRIBE recognizes symbols naming optimization policy
158 qualities, and mentions ALWAYS-BOUND declarations.
159 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
161 * enhancement: ASDF has been updated to 2.009.
162 * enhancement: the system detects known type-erros in calls better,
163 signalling a full warning about violated proclaimed FTYPEs and violations
164 of derived FTYPEs within the same file, including self-calls.
165 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
166 * optimization: constant-folding exploits numeric and character types, in
167 addition member types.
168 * optimization: numeric, character and member types that are inhabited by
169 exactly one value are tested with EQL.
170 * optimization: more conditional branches are eliminated during IR1.
171 Branches are simplified before performing if/if-conversion, and simple
172 equivalent branches (that only read the same constant or variable) are
174 * improvements to the Windows port:
175 ** change: canonical unparsing form for pathname namestrings now uses / as
176 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
177 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
178 on Windows. (thanks to Kalyanov Dmitry)
179 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
181 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
182 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
183 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
184 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
186 * bug fix: interrupts arriving during CL:OPEN caused an error.
187 * bug fix: overeager character buffering could cause input to block
188 spuriously when reading from a pipe (lp#643686)
189 * bug fix: more efficient timer expiry should avoid starvation on systems
190 where number of SIGALRMs per second is restricted. (lp#375515)
191 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
192 * bug fix: compile-times no longer scale linearly with the size of
193 quoted lists in source-code. (lp#654289)
194 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
195 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
196 so badly. (lp#654485)
197 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
198 an error for eg. STRUCTURE. (lp#458015)
199 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
200 (lp#613871, thanks to Roman Marynchak)
201 * bug fix: more reliable &REST list type derivation. (lp#655203)
202 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
203 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
204 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
205 also declared NOTINLINE. (lp#655581)
206 * bug fix: the compiler could attempt to emit constant left shifts of
207 greater value than n-word-bits. (lp#309063)
208 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
209 type information for the function being set. (lp#659220)
210 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
211 containing self-calls were recompiled with a new signature, and failed
212 to warn when a self-call using the old signature was left in. (lp#655126)
213 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
214 :DEFAULT when the default external had character size other than 8 bits.
216 * bug fix: derived types of functions in the same file were implicitly
217 trusted, leading to potential heap corruption when those function were
218 defined incompatibly. (lp#657499)
219 * bug fix: existing ASDF source registries are ignored when building
221 * bug fix: short-form DEFSETF checks that the second argument is a symbol
222 (lp#655824, thanks to Roman Marynchak)
223 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
224 package-lock violation was detected. (lp#660752)
225 * bug fix: the system can store different docstrings for a single function
226 under different names. (lp#661631, regression from 1.0.29.24)
227 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
228 properly. (lp#384801)
229 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
230 of specified length could confuse the type derivation in unsafe code.
232 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
233 fork with multiple Lisp threads running is made on every platform,
234 not just Darwin. (lp#451111)
235 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
236 around when core was saved, which could cause undefined behaviour when the
238 * bug fix: Allow UNTRACE of functions that are no longer defined
239 (lp#667657, thanks to Attila Lendvai)
240 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
241 compile-time warning (lp#664373, thanks to Stas Boukarev)
243 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
244 * incompatible change: FD-STREAMS no longer participate in the serve-event
245 event-loop by default. (lp#316072)
246 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
247 affects streams from CL:OPEN.
248 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
249 default, but this is liable to change: applications needing serve-event
250 for socket streams should explicitly request it using :SERVE-EVENTS T
252 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
254 * enhancement: CLOS effective method functions and defclass slot typechecking
255 function now have debug names for use in backtraces and profiles.
256 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
258 * enhancement: symbols are printed using fully qualified names in several
259 error and warning messages which are often associated with package
260 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
261 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
262 thanks to Andrew Golding)
263 * bug fix: reading /proc files on Linux works. (lp#425199)
264 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
266 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
267 breaking code that tried to write the value of a printer control variable.
268 (lp#581564, thanks to Stas Boukarev)
269 * bug fix: WRITE compiler macro did not handle output stream designators
270 correctly. (lp#598374, thanks to Stas Boukarev)
271 * bug fix: better availability of names of foreign functions in backtraces
272 on Linux. (lp#626962, thanks to Stas Boukarev)
273 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
274 lp#627581, thanks to Josh Elsasser and Jim Wise)
275 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
276 thanks to Josh Elsasser)
277 * bug fix: using aliases for builtin classes as defmethod specializers
278 without adding DEFTYPEs for them works. (lp#618387)
279 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
281 * bug fix: legally dynamic-extent lists and vectors used as
282 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
283 * bug fix: inline-expansion creating references to dead lambda-variables
284 (lp#454681, thanks to Alexey Dejneka)
285 * bug fix: better error message for bogus numerical arguments to RANDOM.
286 (lp#598986, thanks to Stas Boukarev)
287 * bug fix: the compiler occasionally inlined references from incompatible
288 environments occurs. (lp#308951)
289 * bug fix: the compiler threw an error when trying to compile a local
290 function (labels or flet) known to take a specialized complex argument.
291 (not in launchpad, reported by sykopomp in #lispgames)
292 * bug fix: package-locks failed to protect against compile-time effects of
293 DEFUN when the symbol previously had a macro definition. (lp#576637)
294 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
295 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
296 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
297 * bug fix: evaluation in debugger REPL works using the global context when
298 in frames that do not have sufficient debug information.
299 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
301 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
303 * bug fix: interrupt taking longer than the requested period caused SLEEP
304 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
306 changes in sbcl-1.0.42 relative to sbcl-1.0.41
308 ** Cross-compilation host is now specified to make.sh using
309 command-line argument --xc-host=<command> instead of a positional
310 argument. (thanks to Daniel Herring)
311 ** Install location can be specified to make.sh using command-line
312 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
313 * optimization: The default implementation of
314 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
315 * enhancement: Explicit memory barrier operations are now available for use
316 by multithreaded code. See documentation for details.
317 * enhancement: Experimental support for threading on Linux/PPC.
318 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
319 * bug fix: EXPT signals an error if first argument is a zero and second
320 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
321 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
322 (lp#576594, thanks to Roman Marynchak)
323 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
324 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
326 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
327 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
328 cached, leading to many fewer expensive calls to
329 COMPUTE-APPLICABLE-METHODS.
330 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
331 CLASS argument, search for and call an appropriate optimized ctor function
333 * bug fix: WRITE always returns the correct value.
335 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
336 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
337 * bug fix: Name conflicts between symbols passed as arguments to a single
338 call to IMPORT no longer add multiple symbols with the same name to the
339 package (detectable via DO-SYMBOLS).
340 * bug fix: support building without the dlshim on darwin x86 and x86-64
342 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
344 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
345 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
347 * bug fix: linkage-table entries on PPC now no longer overflow their
348 space allocation (potentially causing crashes if they are written out
350 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
351 platforms, preventing the GC from seeing stale pointers on the control
352 stack in subsequent GCs (which would, and does, break invariants).
353 * bug fix: 32-bit unicode external formats now work on big-endian systems.
354 * bug fix: Literal characters with code points greater than about 32767
355 now work on PPC UNICODE builds.
356 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
357 high order bits are explicitly cleared out. In some contrived situations,
358 this could lead to wrong results in mixed real/complex float arithmetic.
359 * bug fix: Fix function/macro redefinition warnings when building with
360 clisp. (lp#576787, thanks to Josh Elsasser)
361 * new platform: experimental support for ppc/openbsd (thanks to Josh
363 * bug fix: Floating-point traps now work on ppc/linux.
365 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
366 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
367 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
368 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
369 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
370 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
371 SB-THREAD:GRAB-MUTEX.
372 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
373 contain additional data structures and tools for concurrent programming;
374 at the moment it contains a lock-free queue, and a lock-free mailbox
376 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
377 GET-MUTEX but takes &key rather than &optional parameters. Also added
378 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
380 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
381 SB-THREAD:WAIT-ON-SEMAPHORE.
382 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
384 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
385 conditions to defer the deadline for forever.
386 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
388 * enhancement: errors from NO-APPLICABLE-METHOD and
389 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
390 generic function call.
391 * enhancement: SB-BSD-SOCKET improvements
392 ** sockets and socket streams now have a more informative printed
393 representation based on the corresponding SOCKET-NAME and
395 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
397 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
398 CL:CLOSE when appropriate, and no longer disassociates the stream
399 from the socket if close failed. (lp#543951)
400 * improvements to the instrumenting profiler
401 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
402 ** optimization: counters no longer use locks for the overflow mode.
403 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
404 incurred an off-by-one miscount.
405 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
406 * enhancement: improved DEFMETHOD pretty-printing.
407 * enhancement: perform range reduction when arguments are too large for
408 x87's transcendentals (instead of returning 0). (lp#327192)
409 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
410 some of CL-PPCRE's macros. (lp#570079)
411 * enhancement: our machine code is slightly less hostile to valgrind on
413 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
414 to Robert Swindells and Aleksej Saushev)
415 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
416 * bug fix: a rare case of startup-time page table corruption.
417 * bug fix: a semaphore with multiple waiters and some of them unwinding due
418 to timeouts could be left in an inconsistent state.
419 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
420 * bug fix: misoptimization of multiplication by one in
421 (SB-C::FLOAT-ACCURACY 0) policies.
422 * bug fix: miscounts in SB-PROFILE.
423 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
424 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
425 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
426 up itself" (March 2010) for further details.
427 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
428 against length of the list if the element is found before the specified
429 END is reached. (thanks to Alec Berryman, lp#554385)
430 * bug fix: errors signalled during package graph modification no longer
431 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
432 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
433 :SB-DOC feature. (lp#552564)
434 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
435 * bug fix: more robust runtime executable path detection. (lp#375549)
436 * bug fix: GCD always returns positive values. (lp#413680)
437 * bug fix: Converting division to multiplication by reciprocal handles
439 * bug fix: We were too eager in eliding range reduction tests on x87.
440 The maximal magnitude is 2^63, not 2^64.
441 * bug fix: Transforms for TRUNCATE don't die when the result is completely
443 * bug fix: Maybe restore buildability on Alpha.
444 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
446 * bug fix: RANDOM-STATE can be printed readably again.
447 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
448 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
449 types) could result in type mismatches during compilation.
451 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
452 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
453 stack frame thrown from.
454 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
455 compiler optimization qualities inside dynamic extent of its body.
456 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
457 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
459 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
460 constraint propgation, allowing better compilation eg. when used to
461 access structures with WITH-SLOTS. (lp#520366)
462 * optimization: the compiler is now more aware of the type of the underlying
463 storage vector for multidimensional simple arrays resulting in better code
464 for accessing such arrays.
465 * optimization: passing NIL as the environment argument to TYPEP no longer
466 inhibits optimizing it. (lp#309788)
467 * optimization: more efficient register usage when handling single-float
468 arguments on x86-64. (thanks to Lutz Euler)
469 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
470 pre-allocated temporary vectors. (lp#496249)
471 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
472 in :INITIAL-CONTENTS. (lp#523612)
473 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
474 functions. (lp#524707)
475 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
476 WITH-SLOTS usages during compilation.
477 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
478 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
479 all x86oid platforms with :UD2-BREAKPOINTS target feature.
480 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
481 instruction (tested on x86oid linux with ud2-breakpoints).
482 * bug fix: slam.sh now works on win32.
483 * bug fix: better differences of numeric types. (lp#309124)
484 * bug fix: arrays declared intersection and union types can have their
485 upgraded element type derived. (lp#316078)
486 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
487 threads started during profiling. (lp#472499)
488 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
490 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
491 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
492 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
493 values instead of signaling an error. (lp#309093)
494 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
496 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
497 declarations (lp#497321)
498 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
499 and failed to detect circular lists (lp#452008)
500 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
502 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
503 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
504 due to it, so that handlers can run.
505 * bug fix: reparsing undefined types if they have become defined since
507 * bug fix: missing &REST type in a proclamation for a function with both
508 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
509 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
510 expanded calls (lp#542174)
511 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
512 than just at toplevel form.
514 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
515 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
516 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
517 but work on type specifiers.
518 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
519 to name a type specifier.
520 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
521 specifier is valid where "valid" basically means "would be accepted as
522 second argument of TYPEP".
523 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
524 returns the function's declared, or derived FTYPE.
525 * new feature: SB-POSIX now supports accessing the d_ino member of
526 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
527 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
528 provide for seeding a RANDOM-STATE object with user-provided data or
529 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
530 attempt to initialize the returned state from the operating system's
531 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
532 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
533 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
534 * bug fix: Fix grammar and style issues for the docstrings of
535 printer-related variables and functions. (Thanks to mon_key; launchpad
537 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
539 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
540 in a row even though a handler defered the deadline long into the
542 * bug fix: A deadline handler was run without interrupts enabled for a
543 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
544 in infinitely spinning, non-killable threads.
545 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
546 before reaching the erring stack frame.
547 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
548 real power. (launchpad bug lp#525949)
549 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
550 GENCGC platforms. (launchpad bug lp#529014)
551 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
552 (launchpad bug lp#525916)
553 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
554 (Thanks to Robert Goldman)
556 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
557 * optimization: ROUND with a single single-float or double-float argument
558 is properly inlined when possible.
559 * optimization: Slightly better code is generated for integer<->float
560 conversions and for single-float<->double-float conversions on x86-64.
561 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
562 code for 32-bit and 64-bit rotations on x86-64.
563 * bug fix: The install script changes the ownership of directories as well
564 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
565 launchpad bug lp#508485)
566 * bug fix: TRUNCATE with a single single-float or double-float argument is
567 properly inlined when possible. (launchpad bug lp#489388)
568 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
569 no longer causes a compiler error on x86 and ppc.
570 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
571 always relative to *READTABLE* rather than the passed argument.
573 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
574 * minor incompatible change: threading support is now enabled by default
576 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
578 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
579 are now caught and reported just like errors during macroexpansion.
580 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
581 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
582 * enhancement: ASDF systems can now depends on SB-QUEUE.
583 * fixes and improvements related to Unicode and external formats:
584 ** bug fix: error handling and restart usage in the ucs-2 external format
586 ** there is now an implementation of the ucs-4 external format.
587 ** the utf-16 and utf-32 external formats are supported.
588 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
589 in the environment. setenv() and unsetenv() are also provided. (reported by
590 Fare Rideau; launchpad bug lp#460455)
591 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
592 loading. This ensures sensible errors for .FASL files from other
593 implementations on case-insensitive filesystems. (reported by Willem
594 Broekema; launchpad bug lp#489417)
595 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
596 Willem Broekema; launchpad bug lp#489698).
597 * bug fix: some minor code rearrangements to reenable warning-free building
598 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
599 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
601 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
604 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
605 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
606 * improvement: support O_LARGEFILE access to files larger than 2GB on
607 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
608 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
609 definitions for methods specializing on the passed class itself.
610 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
611 definitions for methods specializing on the passed class itself, or on
613 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
614 about itself during the build (e.g. for M-? in Slime), if this flag is
615 enabled in customize-target-features.lisp. This will increase the core
616 size by about 5-6mb, though, so it's mostly interesting to SBCL
618 * new feature: various GENCGC tuning parameters have been experimentally
619 documented and exported from SB-EXT. See documentation for details.
620 * fixes and improvements related to Unicode and external formats:
621 ** the Unicode character database has been upgraded to the
622 Unicode 5.2 standard, giving names and properties to a number of new
623 characters, and providing a few extra characters with case
625 ** improvement: restarts for providing replacement input/output on coding
626 errors for fd-stream external formats.
627 ** improvement: where :<encoding> is a keyword corresponding to an
628 external format the system supports, it is now possible to specify
629 (:<encoding> :replacement <character>) as an external format which will
630 automatically substitute <character> on encoding or decoding errors for
631 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
633 ** improvement: the file streams underlying the standard streams (such as
634 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
635 which uses the replacement mechanism to handle encoding errors,
636 preventing various infinite error chains and unrecoverable I/O
638 ** minor incompatible change: the utf-8 external format now correctly
639 refuses to encode Lisp characters in the surrogate range (char-codes
640 between #xd800 and #xdfff).
641 ** fix a typo preventing conversion of strings into octet vectors
642 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
644 ** fix a bug in the octet multibyte handling of decoding errors and the
645 USE-VALUE restart. (launchpad bug lp#314939)
646 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
647 restart on fd-stream decoding errors.
648 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
649 error is near the end of file.
650 ** fix a double-error case in unibyte octet conversions, when the first
651 use of USE-VALUE is ignored.
652 ** fix bugs in handling of undefined code points in unibyte encodings.
653 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
654 streams after an UNREAD-CHAR.
655 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
656 object is allocated in a boxed region of dynamic space.
657 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
658 fork with multiple Lisp threads running is made, instead of going
659 ahead with unpredictable consequences. (reported by Leslie Polzer)
660 * bug fix: uses of slot accessors on specialized method parameters within
661 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
662 error while finalizing the class. This fix may cause classes with slot
663 accessors to be finalized later than previously. (reported by Lars Rune
664 Nøstdal; launchpad bug lp#473699)
665 * bug fix: restore buildability on the MIPS platform. (regression from
666 1.0.30.38, reported by Samium Gromoff)
667 * bug fix: inspecting closures is less likely to fail with a type error.
668 * bug fix: no timer starvation when setting the system clock back.
669 (launchpad bug lp#460283)
670 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
671 standard pprint dispatch table as specified by CLHS.
672 * bug fix: give CLISP a hint about a type declaration to enable it to build
673 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
675 * bug fix: correctly dump literal objects in defaulting forms of arglists.
676 (reported by Attila Lendvai; launchpad bug lp#310132)
677 * bug fix: distinguish in type specifiers between arrays that might be
678 complex and arrays that are definitely complex. (launchpad bug lp#309129)
679 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
680 type. (reported by Levente Mészáros; launchpad bug lp#485972)
681 * bug fix: setting the value of a symbol-macro within a method in the
682 presence of type declarations works properly again. (reported by Iban
683 Hatchondo; launchpad bug lp#485019)
685 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
686 * optimization: faster FIND and POSITION on strings of unknown element type
687 in high SPEED policies. (thanks to Karol Swietlicki)
688 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
690 * improvement: better error signalling for bogus parameter specializer names
691 in DEFMETHOD forms (reported by Pluijzer)
692 * bug fix: DELETE-FILE once again works on logical pathnames (regression
694 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
696 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
697 removes previous default initargs (reported by Lars Rune Nøstdal and
699 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
700 lambda-lists. (reported by Peter Seibel)
701 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
702 correctly when starting from an executable core without saved runtime
703 options (reported by Faré Rideau, thanks to Zach Beane)
704 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
705 an optimization note instead. (reported by Martin Cracauer)
706 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
707 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
708 new process group if it doesn't need to share stdin with the sbcl
709 process. (thanks to Leslie Polzer)
710 * bug fix: SATISFIES could be misoptimized to refer to a local function.
711 (reported by Stanislaw Halik)
713 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
714 * improvement: stack allocation is should now be possible in all nested
715 inlining cases: failure to stack allocate when equivalent code is manually
716 open coded is now considered a bug.
717 * improvements related to Unicode:
718 ** the Unicode character database has been upgraded to the
719 Unicode 5.1 standard, giving names and properties to a number of new
720 characters, and providing a few extra characters with case
722 ** the system now recognizes and produces names for Unicode Hangul
724 ** the EBCDIC-US external-format is now supported for octet operations
725 (as well as for stream operations).
726 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
727 be used to output toplevel compile-time effects into a separate .CFASL
729 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
730 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
732 * optimization: TRUNCATE on known single- and double-floats is upto 25%
734 * optimization: division of floating point numbers by constants uses
735 multiplication by reciprocal when an exact reciprocal exists.
736 * optimization: multiplication of single- and double-floats floats by
737 constant two has been optimized.
738 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
739 sufficient type information is available. (thanks to Leslie Polzer)
740 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
741 known structure objects are as efficient as defstruct generated accessors.
742 * optimization: unused vector creation can now be optimized away.
743 * improvement: ASDF systems can now depends on SB-INTROSPECT.
744 * improvement: a STYLE-WARNING is signalled when a generic function
745 clobbers an earlier FTYPE proclamation.
746 * improvement: the compiler is able to track the effective type of
747 generic function across method addition and removal even in the
748 absence of an explicit DEFGENERIC.
749 * improvement: DESCRIBE now reports on symbols naming undefined
750 but assumed or declared function as well.
751 * improvement: recompilation of systems using SB-GROVEL now works
752 (thanks to Leslie Polzer)
753 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
754 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
756 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
757 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
758 well as user defined declaration names.
759 ** VARIABLE-INFORMATION is now aware of alien variables.
760 * improvement: improved address space layout on OpenBSD (thanks to Josh
762 * improvement: pretty-printing of various Lisp forms has been improved
763 (thanks to Tobias Rittweiler)
764 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
765 unused were deleted in safe code. (reported by John Fremlin)
766 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
768 * bug fix: some out-of-line array predicates were missing (reported by
770 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
772 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
773 (thanks to Larry D'Anna)
774 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
775 as well. (reported by Josh Elsasser)
776 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
777 leading to possible attempts to delete the same file twice. See docstring
778 on DELETE-FILE for details. (reported by John Fremlin)
779 * bug fix: DELETE-FILE once again deletes the file named by the pathname
780 designator argument, rather than its truename. (reported by Luis
782 * bug fix: the low-level debugger had 32-bit assumptions and was missing
783 information about some array types. (thanks to Luis Oliveira)
784 * bug fix: moderately complex combinations of inline expansions could
785 be miscompiled if the result was declared to be dynamic extent.
786 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
787 form (+ <variable> <integer>) were miscompiled under certain
789 * bug fix: in some cases no compiler note about failure to stack allocate
790 was emitted, even if the objects were in fact heap allocated.
791 * bug fix: minor violation of "otherwise inaccessible" rule for stack
792 allocation could cause objects users might reasonably expect to
793 be heap allocated to be stack allocated.
794 * bug fix: DESCRIBE signalled an error for generic functions under
795 certain circumstances. (thanks to Leslie Polzer)
796 * bug fix: Fixed spelling of an error message.
798 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
799 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
800 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
801 of SB-THREAD:THREAD-ERROR-THREAD.
802 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
803 * new feature: docstrings for local and anonymous functions are no longer
804 discarded. (thanks to Leslie Polzer)
805 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
806 values in other threads.
807 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
808 about object allocation.
809 * optimization: division of a real float by a complex float is implemented
810 with a specialised code sequence.
811 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
812 keywords is an order of magnitude faster.
813 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
814 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
815 methods, and similarly for non-standard metaclass classes as long as there
816 are no methods additional on MAKE-INSTANCE.
817 * optimization: more efficient type-checks for FIXNUMs when the value
818 is known to be a signed word on x86 and x86-64.
819 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
820 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
822 * optimization: compiler is smarter about delegating argument type checks to
824 * optimization: several character functions are now compiled somewhat more
825 efficiently. (reported by Lynn Quam)
826 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
827 * improvement: less unsafe constant folding in floating point arithmetic,
828 especially for mixed complex/real -float operations.
829 * optimization: constant double and single floats are stored in native
830 unboxed format on x86[-64].
831 * optimization: smarter code for arithmetic operations with constant floats,
832 complex floats, or integers on x86[-64].
833 * optimization: smarter code for conjugate/multiplication of float complexes
834 and abs/negate of floats on x86-64.
835 * optimization: more efficient complex float and real float operations on
837 * improvement: complex float division is slightly more stable.
838 * improvement: DESCRIBE output has been reworked to be easier to read and
839 contains more pertinent information.
840 * improvement: failure to provide requested stack allocation compiler notes
841 provided in all cases (requested stack allocation not happening without a
842 note being issued is now considered a bug.)
843 * bug fix: SB-POSIX exports the documented types and functions
844 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
845 types. (reported by "abhi")
846 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
847 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
848 (thanks to Paul Khuong)
849 * bug fix: looping around HANDLER-CASE could silently consume stack space
850 on each iteration. (reported by "foobar")
851 * bug fix: better error signalling when calls to functions seeking elements
852 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
853 (reported by Tobias Rittweiler)
854 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
855 directory components now works as it used to. (various prolems reported by
856 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
857 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
858 (reported by Elliot Slaughter, thanks to Stas Boukarev)
859 * bug fix: bogus undefined variable warnings from fopcompiled references to
860 global variables. (thanks to Lars Rune Nøstdal)
861 * bug fix: foreign function names should now appear in backtraces on
862 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
863 * bug fix: SETF compiler macro documentation strings are not discarded
865 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
866 (thanks to Alex Plotnick)
867 * bug fix: SLEEP accepts large integer arguments, truncating them to
868 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
869 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
870 * bug fix: compiler notes for expensive slot type checks could be emitted
871 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
873 changes in sbcl-1.0.29 relative to 1.0.28:
874 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
875 https://bugs.launchpad.net/sbcl
876 Bugs can be reported directly there, or by sending email to
877 sbcl-bugs@lists.sourceforge.net
878 (no subscription required.)
879 * minor incompatible change: under weak type checking policy integer
880 types are weakened less aggressively.
881 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
882 allowed to return, which causes SBCL to quit with exit status 0. Previously
883 if the function returned with a small integer return value, that value
884 was accidentally reused as the exit status.
885 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
886 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
887 :HASH-FUNCTION argument. Refer to user manual for details.
888 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
890 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
891 microseconds since the Unix epoch on all platforms.
892 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
893 allows the compiler to safely elide boundedness checks for special
895 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
896 the symbol, prohibits both lexical and dynamic binding. This is mainly an
897 efficiency measure for threaded platforms, but also valueable in
899 * new feature: UNC pathnames are now understood by the system on Windows.
900 * optimization: the compiler uses a specialized version of FILL when the
901 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
903 * optimization: accesses to potentially non-simple arrays where element type
904 is known are 50% faster.
905 * optimization: compiler now generates faster array typechecking code.
906 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
908 * optimization: multidimensional array accesses in the absence of type
909 information regarding array rank are approximately 10% faster due to
910 open coding of ARRAY-RANK.
911 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
912 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
914 * optimization: result of call to VECTOR can now be stack allocated.
915 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
916 as long as the resulting array is one-dimensional and has a known
917 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
918 length of the list matches the known length of the vector does not
919 allocate the list as an intermediate step. Ditto for VECTOR and simple
921 * optimization: MAKE-ARRAY can now stack allocate in the presence of
922 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
923 known element type, and is known to be simple and one dimensional.
924 * improvement: SBCL now emits a compiler note where stack allocation was
925 requested but could not be provided (not in all cases, unfortunately)
926 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
927 * improvement: pretty-printing loop has been implemented properly. (thanks
928 to Tobias Rittweiler)
929 * documentation: CLOS slot typechecing policy has been documented.
930 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
931 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
932 pointer, leading to memory faults. (thanks to Bart Botta)
933 * bug fix: better floating point exception handling on x86/OpenBSD.
934 (thanks to Josh Elsasser)
935 * bug fix: exit status from QUIT when called under --script was lost
936 (reported by Hubert Kauker)
937 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
938 same implementation of FILL to initialize the array, even if a more
939 efficient one was available (reported by Stas Boukarev, thanks to
941 * bug fix: potential miscompilation of array stack allocation on x86 and
942 x86-64. (reported by Time Tossavainen)
943 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
944 result in their subforms being treated as top level forms. (reported by
946 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
947 than a machine register could leave garbage in the high bits of the
948 result register (bug 316325).
949 * bug fix: disable address space randomization Linux/x86-64 as well,
950 not just x86-64. (reported by Ken Olum)
951 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
952 generate incorrect code.
953 * bug fix: #201; type inference for CONS and ARRAY types could derive
954 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
955 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
956 could not be assigned to or bound with PROGV. (reported by Lorenz
958 * bug fix: the value of CL:- in the inspector was the previous expression
959 evaluated rather than the expression being evaluated.
960 * bug fix: constants can no longer be locally declared special.
961 * bug fix: signals delivered to threads started from foreign land (read:
962 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
963 thread by blocking all signals and resignalling.
964 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
965 from :INITFORM, if any.
967 changes in sbcl-1.0.28 relative to 1.0.27:
968 * a number of bugs in cross-compilation have been fixed, with the ultimate
969 result that building under (at least) clisp should be much more reliable.
970 * minor incompatible changes: echo-streams now propagate unread-char to the
971 underlying input stream, and no longer permit unreading more than one
973 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
974 frames, allowing for instance more reliable backtraces.
975 * improvement: the debugger REPL can now reference lexical variables
976 by name directly for code compiled with (DEBUG 3).
977 * improvement: errors from malformed declarations now have better source
978 paths associated with them. (thanks to Tobias Rittweiler)
979 * optimization: faster local calls on x86/x86-64
980 * bug fix: some error messages for out-of-bound array indexes confused the
981 index and the bound. (thanks to Stas Boukarev)
982 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
984 * bug fix: running regressions tests in shells without OSTYPE set now works.
985 (reported by Harald Hanche-Olsen)
986 * bug fix: more robust static space exhaustion signalling from
987 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
988 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
989 docstring away instead of storing it under names such as (LAMBDA (X)).
990 (reported by Leslie Polzer)
991 * bug fix: timers could go off in the wrong order, be delayed indefinitely
992 (thanks to Ole Arndt for the patch)
993 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
994 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
995 potentially-invalid effective methods in its cache.
996 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
997 instances as well (thanks to Paul Khuong)
998 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
999 SB-POSIX:WAITPID and their C equivalents.
1000 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1002 changes in sbcl-1.0.27 relative to 1.0.26:
1003 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1004 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1005 * improvement: the system either recovers from stack exhaustion or dies
1006 properly as opposed to leaving the user uncertain of whether the handler
1007 trampled on some random memory next to the stack or having to rely on
1008 --lose-on-corruption (which is still a good idea to use in production
1009 because stack exhaustion can happen in signal handlers which will likely
1011 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1012 1.0.25.37, reported by Harald Hanche-Olsen)
1013 * bug fix: work around signal delivery bug in darwin (regression from
1014 1.0.25.44, reported by Sidney Markowitz)
1015 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1017 changes in sbcl-1.0.26 relative to 1.0.25:
1018 * incompatible change: an interruption (be it a function passed to
1019 INTERRUPT-THREAD or a timer function) runs in an environment where
1020 interrupts can be enabled. The interruption can use
1021 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1022 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1023 potentially running out of stack. Keep in mind that in the absence
1024 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1025 acquiring a lock can enable interrupts.
1026 * incompatible change: GC-OFF and GC-ON are removed, as they were
1027 always unsafe. Use WITHOUT-GCING instead.
1028 * new feature: runtime option --disable-ldb
1029 * new feature: runtime option --lose-on-corruption to die at the
1030 slightest hint of possibly non-recoverable errors: running out of
1031 memory, stack, alien stack, binding stack, encountering a memory
1032 fault, etc. In the absence of --lose-on-corruption a warning is
1034 * enhancement: detect binding stack exhaustion
1035 * enhancement: detect alien stack exhaustion on x86/x86-64
1036 * improvement: generally more stable and reliable interrupt handling
1037 * improvement: there is a per thread interruption queue,
1038 interruptions are executed in order of arrival
1039 * improvement: a repeating timer reschedules itself when the it has
1040 finished, but expiration times are spaced equally. If an
1041 expiration time is in the past it will trigger after a short grace
1042 period that may give a chance to other things to run.
1043 * optimization: slightly faster gc on multithreaded builds
1044 * optimization: faster WITHOUT-GCING
1045 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1046 important locks so that the debugger/handler doesn't produce
1047 recursive errors or deadlock.
1048 * bug fix: real-time signals are not used anymore, so no more
1049 hanging when the system wide real-time signal queue gets full.
1050 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1052 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1053 * bug fix: fix random memory faults related to interrupts on alpha
1054 * bug fix: fix random memory faults related to interrupts on sparc
1055 * bug fix: fix deadlocks related to starting threads
1056 * bug fix: fix deadlines on locks on futex platforms
1057 * bug fix: restore errno in signal handlers
1058 * bug fix: fix deadlocks related to hash tables
1059 * bug fix: fix deadlocks in pcl
1061 changes in sbcl-1.0.25 relative to 1.0.24:
1062 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1063 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1064 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1065 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1066 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1067 better name and does not return values so stale on multiprocessor systems.
1068 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1070 * improvement: unithread builds keep track of MUTEX-VALUE.
1071 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1072 stream anymore making it thread safe to have a concurrent reader and
1073 a writer, for instance, in a pipe.
1074 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1075 arguments, making compiler-macros for SETF-functions able to inspect
1076 their constant arguments.
1077 * improvement: COMPILE-FILE reports times with millisecond accuracy
1078 (thanks to Luis Oliveira)
1079 * optimization: CHAR-CODE type derivation has been improved, making
1080 TYPEP elimination on subtypes of CHARACTER work better. (reported
1081 by Tobias Rittweiler, patch by Paul Khuong)
1082 * bug fix: setting alien structure fields of type struct by value now
1083 computes the right offset for the memory copy.
1084 * bug fix: compilation problem involving inlined calls to aliens with
1085 result type VOID. (reported by Ken Olum)
1086 * bug fix: #235a; sequential inline expasion in different policies no
1087 longer reuses the functional from the previous expansion site.
1088 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1089 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1090 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1091 cause an implied type redefinition. Regression from 1.0.21.29.
1092 * bug fix: sign-extension of small signed return values now works with C
1093 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1094 * improvements to the Windows port:
1095 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1096 Westfold, thanks to Rudi Schlatte)
1098 changes in sbcl-1.0.24 relative to 1.0.23:
1099 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1100 vector of a multidimensional SIMPLE-ARRAY.
1101 * new feature: the system now signals a continuable error if standard
1102 readtable modification is attempted. (thanks to Tobias Rittweiler)
1103 * new feature: DIRECTORY has been extended with a non-standard keyword
1104 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1105 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1106 has been robustified and documented better. (thanks to Robert Goldman)
1107 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1108 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1109 * tradeoff: constant FORMAT control strings are now compiled unless
1110 SPACE > SPEED (previously only when SPEED > SPACE.)
1111 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1113 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1115 * bug fix: lexical type declarations are now correctly reported by
1116 SB-CLTL2. (reported by Larry D'Anna)
1117 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1118 using UTF-8 as external format. (thanks to Luis Oliveira)
1119 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1120 are signalled correctly. (thanks to Stas Boukarev)
1121 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1122 designator. (thanks to Tobias Rittweiler)
1123 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1124 designator, and returns T instead of the function. (thanks to
1126 * bug fix: direct superclasses of STANDARD-CLASS and
1127 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1128 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1129 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1130 when no class with the named slot yet exists no longer causes a
1131 compile-time style-warning.
1132 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1133 in safe code. (reported by Didier Verna)
1134 * bug fix: #430; nested structure constructors can stack allocate.
1135 * bug fix: on some 64-bit platforms dynamic space size was truncated
1136 to #xffff0000 bytes. (reported by Benjamin Lambert)
1137 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1138 REPL unusable. (reported by Daniel Herring)
1139 * bug fix: return values of READ-SEQUENCE did not take :START into
1140 account on file streams, regressions since 1.0.12.22. (reported by
1141 Thomas Russ, patch by Paul Khuong)
1142 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1143 method specializer used to confuse permuation vector optimization.
1144 * bug fix: system inserted bogus implicit type declarations for local
1145 special variables in DEFMETHOD bodies.
1146 * bug fix: #354; duplicated frames in backtraces due to
1147 non-tail-call-optimized XEPs to functions with return type NIL
1149 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1150 initializes structure object slots according to DEFSTRUCT initforms,
1151 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1152 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1153 (reported by Bruno Haible and Stephen Wilson)
1154 * bug fix: #395; fill-pointer output streams used now support
1155 element-type BASE-CHAR as well.
1156 * bug fix: compiler error when attempting to derive return value of
1157 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1159 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1161 * bug fix: Mac OS X binaries should now be portable between Leopard
1164 changes in sbcl-1.0.23 relative to 1.0.22:
1165 * enhancement: when disassembling method functions, disassembly
1166 for the associated fast function is also produced.
1167 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1169 * optimization: printing with *PRINT-PRETTY* true is now more
1170 efficient as long as the object being printed doesn't require
1171 special handling by the pretty printer.
1172 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1173 now interact correctly with type declarations.
1174 * partial bug fix: PCL detects infinite recursion during wrapper
1175 validation. (thanks to Attila Lendvai)
1176 * bug fix: #426; nested function calls are inlined properly.
1177 Previously if FOO was an inline function, in calls of the form
1178 (FOO (FOO ...)) the outer call was not inlined.
1179 * bug fix: long long arguments passed in registers to alien
1180 functions on PowerPC Linux and NetBSD are now handled correctly
1181 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1183 changes in sbcl-1.0.22 relative to 1.0.21:
1184 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1185 for the shared object in the current directory, but passes the native
1186 namestring of the designated pathname to the operation system's shared
1187 object loading function as-it.
1188 * minor incompatible change: --disable-debugger toplevel option now takes
1189 effect before processing of initialization files and --eval or --load
1191 * new feature: new commandline argument: --script, which supports
1192 shebang lines. See documentation for details. (based on work by
1194 * new feature: SAVE-LISP-AND-DIE can save current values of
1195 --dynamic-space-size and --control-stack-size in the executable core,
1196 causing it to skip normal runtime option processing. See documentation
1197 for details. (thanks to Zach Beane)
1198 * enhancement: inoccous calls to EVAL or generic functions dispatching
1199 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1200 * enhancement: the system no longer resignals errors from --load and
1201 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1202 associated with the original error to be lost. (thanks to Ariel
1204 * enhancement: :DONT-SAVE keyword argument has been added to
1205 LOAD-SHARED-OBJECT for controlling interaction with
1206 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1207 the effects of an earlier LOAD-SHARED-OBJECT call.
1208 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1209 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1210 provided. (reported by Cedric St-Jean)
1211 * bug fix: circularity handling in the reader did not treat raw
1212 structure slots correctly. (reported by Cedric St-Jean)
1213 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1214 file descriptors when there were none.
1215 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1216 was broken. (reporteed by Willem Broekema)
1217 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1218 pathnames without a directory.
1219 * bug fix: COMPILE-FILE did not warn about undefined variable
1220 references at toplevel, and LOAD of the resulting fasl did
1221 not signal an error.
1222 * bug fix: functions with non-required arguments used to end up with
1223 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1224 * bug fix: redefining a function with non-required arguments didn't
1225 update the system's knowledge about its call signature properly.
1226 * bug fix: fixed #431; incompatible alien record type redefinitions
1227 are detected and handled. (reported by Neil Haven)
1228 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1229 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1231 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1232 after alien stack frames.
1233 * bug fix: strings passed to mk{s,d}temp lacked null termination
1235 changes in sbcl-1.0.21 relative to 1.0.20:
1236 * new feature: the compiler is able to track the effective type of a
1237 generic function across method addition and removal.
1238 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1239 appropriately typed structure slots without locking.
1240 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1241 information like those gathered by TIME using a programming-friendly
1243 * new feature: TIME reports time taken even if the form performs a
1244 non-local transfer of control.
1245 * enhancement: reduced conservativism on GENCGC platforms: on
1246 average 45% less pages pinned (measured from SBCL self build).
1247 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1248 mutate constant symbols or violate declaimed type of the symbol.
1249 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1250 sleeping on the semaphore in heavily contested semaphores.
1251 * bug fix: semaphores and condition variables were not interrupt
1253 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1254 owned by other threads anymore.
1255 * bug fix: FIND on lists called KEY outside the specified
1256 subsequence. (reported by budden)
1257 * bug fix: LOG doesn't use single-float intermediate results when
1258 given mixed integer and double-float arguments, leading to better
1259 precision. (reported by Bob Felts)
1260 * bug fix: LOG with base zero returned values of inconsistent type.
1262 changes in sbcl-1.0.20 relative to 1.0.19:
1263 * minor incompatible change: OPTIMIZE qualities
1264 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1265 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1266 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1267 * documentation: some slot access efficiency guidelines have been
1268 added to the user manual.
1269 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1270 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1271 as ASSOC and MEMEBER.
1272 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1273 to more efficient EQ-comparison versions more often.
1274 * optimization: enhanced derivation of DOLIST iteration variable type
1276 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1278 * optimization: runtime lookup of function definitions can be
1279 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1280 * optimization: compiler is able to derive the return type of
1281 (AREF (THE STRING X) Y) as being CHARACTER.
1282 * optimization: CLRHASH on empty hash-tables no longer does pointless
1283 work. (thanks to Alec Berryman)
1284 * optimization: REPLACE deftransforms don't punt when :START1 or
1286 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1287 no longer emits a code deletion note. (reported by Andrew
1289 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1290 functions with an odd number of &OPTIONAL arguments, a &REST
1291 argument, and one or more &KEY arguments at the call site.
1292 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1293 arguments appeared at call sites as well.
1294 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1295 READ-LINE &co can no longer read from them afterwards. (reported
1297 * bug fix: fixed #427: unused local aliens no longer cause compiler
1298 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1300 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1301 alien-stack leakage. (reported by Andy Hefner)
1302 * bug fix: PROGV signals an error when an attempt to violate declared
1303 type of a variable or bind a constant is made.
1304 * bug fix: SET signals an error when an attempt to violate declared
1305 type of a variable is made.
1306 * bug fix: restart computation during the execution of a restart
1307 test function no longer causes infinite recursion. (reported by
1309 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1310 signals an error. (thanks to Pierre Mai)
1311 * bug fix: EXPORT left symbol unexported in conflict situations.
1312 (thanks to Michael Weber)
1313 * bug fix: correctly handle name conflicts involving CL:NIL.
1314 (thanks to Michael Weber)
1315 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1316 conflicts arising from USEing package with conflicting symbols
1317 correctly. (thanks to Michael Weber)
1319 changes in sbcl-1.0.19 relative to 1.0.18:
1320 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1321 warnings that go otherwise unhandled will be muffled if they are
1322 of the type that's the value of this variable.
1323 * optimization: stack allocation is slightly more efficient on x86
1325 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1326 where a raw slot always is initialized using the initform whose
1327 type is not know sufficiently well a compile-time are now compiled
1328 correctly. (reported by John Morrison)
1329 * bug fix: compiler no longer makes erronous assumptions in the
1330 presence of non-foldable SATISFIES types.
1331 * bug fix: stack analysis missed cleanups of dynamic-extent
1332 arguments in non-let-converted calls to local functions.
1333 * improvements to the Windows port:
1334 ** adjusted address spaces for building on both Win32 and
1335 Win64. (thanks for John Connors)
1336 * fixed some bugs revealed by Paul Dietz' test suite:
1337 ** interval arithmetic during type derivation used inexact integer
1338 to single-float coercions.
1339 ** arithmetic operations involving large integers and single
1340 floats give the same results in compiled and interpreted code.
1341 ** deriving the result type of COERCE no longer signals an error
1342 if the derived type of the second argument is a MEMBER type
1343 containing invalid type specifiers.
1344 ** ADJOIN with constant NIL as second argument works correctly.
1345 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1347 changes in sbcl-1.0.18 relative to 1.0.17:
1348 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1349 profiles only the current thread.
1350 * minor incompatible change: changes to SYMBOL-VALUE of constants
1351 defined with DEFCONSTANT now signal an error.
1352 * enhancement: SB-SPROF now has support for wallclock profiling,
1353 and is also able to profile specific threads. REPORT output
1354 has also additional sorting options.
1355 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1357 * optimization: structure allocation has been improved
1358 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1359 ** out of line constructors are ~10% faster.
1360 ** inline constructors are ~15% faster.
1361 ** inline constructors are capable of dynamic extent allocation
1362 (generally on x86 and x86-64, in some cases on other platforms
1364 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1366 * optimization: file compiler is now able to coalesce non-circular
1367 lists, non-base strings, and bit-vectors. Additionally, constants
1368 are never referenced through SYMBOL-VALUE at runtime.
1369 * optimization: code defining methods on PRINT-OBJECT (and other
1370 generic functions in the COMMON-LISP package) now loads faster.
1371 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1373 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1374 fasl is now deleted. (reported by Attila Lendvai)
1375 * bug fix: READ-LINE always returned NIL for the last line in files.
1376 (reported by Yoshinori Tahara)
1377 * bug fix: more accurate disassembly annotations of foreign function
1378 calls. (thanks to Andy Hefner)
1379 * bug fix: trimming non-simple strings and non-string string
1380 designators when the there is nothing to trim works properly.
1381 (thanks to James Knight)
1382 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1383 (thanks to Travis Cross)
1384 * fixed some bugs revealed by Paul Dietz' test suite:
1385 ** NIL is a valid function name (regression at 1.0.13.38)
1386 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1387 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1388 fill pointers properly (regression at 1.0.12.23)
1389 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1390 displacement indices properly (regression at 1.0.12.23)
1392 changes in sbcl-1.0.17 relative to 1.0.16:
1393 * temporary regression: user code can no longer allocate closure
1394 variable storage on stack, due to bug 419 without explicitly
1395 requesting it. Please consult sbcl-devel for advice if you need to
1396 use this feature in the meanwhile.
1397 * new feature: runtime argument --control-stack-size can be used to
1398 adjust thread default control stack size.
1399 * enhancement: improved TIME output
1400 ** all times are reported using the measured accuracy (milliseconds
1401 for real and GC times, microseconds for everything else.)
1402 ** processor cycle counts on x86 and x86-64.
1403 ** interpreted forms are counted for both evaluator modes.
1404 ** number of lambdas converted by the compiler is reported.
1405 ** CPU percentage report (computed from real and total run time.)
1406 ** more comprehensive run time reporting, using a condenced format
1407 ** interperted form, lambda, and page fault counts are omitted
1409 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1411 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1412 * optimization: two argument forms of LAST are upto ~10% faster
1413 in normal SPEED policies.
1414 * optimization: NCONC no longer needs to heap cons its &REST list
1415 in normal SPEED policies.
1416 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1417 to Sidney Markowitz)
1418 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1419 regression since 1.0.9.1. (thanks to Eric Marsden)
1420 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1421 since 1.0.15.36. (thanks to Paul Khuong)
1422 * bug fix: LAST when always returned the whole list when given a bignum
1423 as the second argument.
1424 * bug fix: dynamic extent allocation of nested lists and vectors
1425 could leak to otherwise accessible parts.
1426 * bug fix: invalid optimization of heap-allocated alien variable
1428 * bug fix: fasl header checking is less vulnerable to different
1429 platform word lengths.
1430 * bug fix: more correct assembler syntax for GNU binutils
1431 2.18.50.0.4 support. (thanks to Marijn Schouten)
1432 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1434 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1435 declarations) successfully. (reported by Attila Lendvai)
1437 changes in sbcl-1.0.16 relative to 1.0.15:
1438 * minor incompatible change: revert the changes to sb-posix's error
1439 signaling added in 1.0.14.
1440 * minor incompatible change: change PROBE-FILE back to returning
1441 NIL whenever we can't get a truename, as was the case before 1.0.14.
1442 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1443 inherits from ERROR instead of just CONDITION.
1444 * new feature: SB-INTROSPECT can provide source locations for instances
1445 as well. (thanks to Tobias Rittweiler)
1446 * optimization: binding special variables now generates smaller code
1447 on threaded platforms.
1448 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1449 and cases where no :TEST is given but the compiler can infer that
1450 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1451 * optimization: better LOGNOT on fixnums.
1452 * optimization: modular arithmetic for a particular requested width
1453 is implemented using a tagged representation unless a better
1454 representation is available.
1455 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1456 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1457 for wellformedness and returns a specialized vector. (reported by
1458 Francois-Rene Rideau)
1459 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1460 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1461 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1462 unscheduling timer at the same time as another timer fires.
1463 * bug fix: don't reschedule timers for dead threads.
1464 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1465 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1466 bogus errors if select() was interrupted.
1467 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1469 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1470 * enhancement: cleaner backtraces for interactive interrupts, as
1471 well as other cases where the interesting frames used to be
1472 obscured by interrupt handling frames.
1473 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1474 now supported, and tracing a whole package using (TRACE "FOO") now
1475 traces SETF-functions as well.
1476 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1477 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1478 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1479 * unreadably printed representation of hash-tables now includes
1481 * bug fix: partially fixed #188: type propagation from assignments
1482 is now more efficient.
1483 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1484 'DOUBLE-FLOAT) are not flushable.
1485 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1486 full address of the object, and none of the tag bits.
1487 * bug fix: readably printing hash-tables now respects other printer
1488 control variables. (reported by Cedric St-Jean)
1489 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1490 keyword with MAKE-HASH-TABLE.
1491 * bug fix: export SB-POSIX:MKSTEMP.
1492 * bug fix: SORT was not interrupt safe.
1493 * bug fix: XREF accounts for the last node of each basic-block as
1495 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1496 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1497 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1498 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1499 create obsolete instances in the case of redefinition or
1500 obsoletion of a superclass. (thanks to Andy Hefner)
1501 * bug fix: Support for the Alpha architecture has been revived; it had
1502 suffered somewhat from lack of maintenance since sbcl-1.0.
1503 * improvements to the Windows port:
1504 ** The system detects the codepage to use at startup, instead of
1505 using the value from the saved core. (thanks to Kei Suzuki)
1507 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1508 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1509 (see documentation for details.)
1510 * revived support for OpenBSD (contributed by Josh Elsasser)
1511 * partially fixed bug #108: ROOM no longer suffers from occasional
1512 (AVER (SAP= CURRENT END)) failures.
1513 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1514 bodies no longer cause a WARNING to be signalled. (reported by
1516 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1517 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1518 the bug in TRUNCATE.) (reported by Michael Weber)
1519 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1520 no samples. (reported by Andy Hefner)
1521 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1522 no longer appear as (NIL ...) frames in backtraces.
1523 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1524 is now actually exported from SB-EXT as documented. (reported by
1526 * bug fix: sb-aclrepl now correctly understands how to inspect
1527 single-floats on 64-bit platforms where single-floats are not boxed.
1528 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1529 yet been finalized. (reported by Levente Meszaros)
1530 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1531 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1532 SBCL-specific optimize qualities.
1534 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1535 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1536 an executable in the search path, and does so in the child
1537 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1538 been removed; it can be found in the CVS history, for somebody who
1539 needs that search behavior (see the manual).
1540 * minor incompatible change: compiler policy re. weakening type
1541 checks has changed: now type checks are weakened only if SAFETY < 2
1543 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1544 unparsing of directory pathnames as files. Analogously,
1545 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1546 filename to parse into a directory pathname.
1547 * enhancement: implicit generic function creation now signals a
1548 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1549 users can bind handlers for and muffle around calls to LOAD.
1550 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1551 to be used (using the default stream external format), and allows
1552 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1553 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1554 strings and vectors whose element-type or simplicity is not fully
1555 known at compile-time.
1556 * optimization: STRING-TRIM and related functions no longer allocate
1557 a new string when no trimming needs to be performed. These functions
1558 are also faster than before when the input string has been declared
1560 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1561 * optimization: READ-LINE is significantly faster for files containing
1563 * optimization: non-open coded uses of character comparison operators
1564 (e.g. char=) no longer cons when called with more than one parameter
1565 on platforms supporting dynamic-extent allocation.
1566 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1567 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1568 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1570 * bug fix: some sequence functions elided bounds checking when
1572 * bug fix: too liberal weakening of union-type checks when SPEED >
1574 * bug fix: more bogus fixnum declarations in ROOM implementation
1577 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1578 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1579 :SYNCHRONIZED argument, which makes the hash-table safe for
1580 concurrent accesses (but not iteration.) See also:
1581 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1582 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1583 * optimization: CONCATENATE on strings is an order of magnitude faster
1584 in code compiled with (> SPEED SPACE).
1585 * optimization: SUBSEQ is ~50% faster on lists.
1586 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1587 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1588 END is smaller then START.
1589 * bug fix: SB-PROFILE will no longer report extra consing for nested
1590 calls to profiled functions.
1591 * bug fix: ROOM implementation had bogus fixnum declarations which
1592 could cause type-errors when calling ROOM on large images.
1593 * bug fix: if file compilation is aborted, the partial fasl is now
1594 deleted, and COMPILE-FILE returns NIL as the primary value.
1595 * bug fix: number of thread safety issues relating to SBCL's internal
1596 hash-table usage have been fixed.
1597 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1598 be returned from its body when the values were being returned
1599 using unknown-values return convection and the W-P-O was wrapped
1600 inside an UNWIND-PROTECT.
1601 * bug fix: sb-posix should now compile again under Windows, enabling
1602 slime to work again.
1604 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1605 * incompatible change: hash-table accessor functions are no longer
1606 automatically protected by locks. Concurrent accesses on the same hash-table
1607 from multiple threads can give inconsistent results or even corrupt the
1608 hash-table completely. Multi-threaded applications should do their own
1609 locking at the correct granularity. In the current implementation it is
1610 still safe to have multiple readers access the same table, but it's not
1611 guaranteed that this property will be maintained in future releases.
1612 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1613 and will signal an error at runtime.
1614 * enhancement: SB-THREAD package now exports a semaphore interface.
1615 * enhancement: CONS can now stack-allocate on x86 and
1616 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1618 * enhancement: nested lists can now be stack allocated on
1619 platforms providing stack allocation support.
1620 * enhancement: dynamic-extent support has been extended to support
1621 cases where there are multiple possible sources for the stack
1623 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1624 if the mutex is uncontested on Linux.
1625 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1626 as specified by the CLHS. (thanks to Tobias Rittweiler)
1627 * bug fix: NaN comparison now works on x86-64.
1628 * bug fix: CLOSE :ABORT T on a stream with pending output now
1630 * bug fix: instances of non-standard metaclasses using standard
1631 instance structure protocol sometimes missed the slot type checks
1633 * bug fix: known functions can be inlined in high-debug code.
1635 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1636 * minor incompatible change: the MSI installer on Windows no longer
1637 associates .lisp and .fasl files with the installed SBCL.
1638 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1639 on Windows. (thanks to Luis Oliviera)
1640 * new feature: SB-CLTL2 contrib module now implements
1641 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1642 * optimization: scavenging weak pointers is now more efficient,
1643 requiring O(1) instead of O(N) per weak pointer to identify
1644 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1645 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1646 method bodies using constant slot-names when the first argument is
1647 a specializer parameter for the method.
1648 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1649 names, when the class of the instance is a direct instance
1650 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1651 as slow as the constant slot-name case.)
1652 * optimization: member type construction is now O(N) instead
1654 * optimization: UNION and NUNION are now O(N+M) for large
1655 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1657 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1658 now more readable in environments like Slime which display it.
1659 (thanks to Tobias C. Rittweiler)
1660 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1661 was able to infer the correct argument type for the object on which
1662 the CAS operation was being performed.
1663 * bug fix: copy propagation interfered with parallel assignment
1664 semantics in local calls. (reported by Paul Khuong)
1665 * bug fix: the signed modular fixnum shift compiled to wrong code on
1666 x86 and x86-64. (spotted by a slight modification to some of
1669 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1670 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1671 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1672 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1674 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1675 and generic function now print the object identity for anonymous
1676 instances. (thanks to Attila Lendvai)
1677 * enhancement: as an extension to MOP, SBCL now supports SETF of
1678 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1679 (thanks to Attila Lendvai)
1680 * enhancement: sb-cover has an alternate annotation mode which puts
1681 the form annotations at the car of the form, instead of annotating
1682 it completely. The benefit of this mode is that it shows better
1683 which forms were instrumented by the compiler.
1684 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1685 by printer control variables. (reported by Dan Corkill)
1686 * bug fix: system leaked memory when delayed output was performed by
1687 the OS in smaller chunks then expected. (thanks to David Smith)
1688 * bug fix: system leaked memory when file streams were not closed
1690 * bug fix: large objects written to slow streams that were modified
1691 after the write could end up with the modified state written to
1692 the underlying file descriptor.
1693 * bug fix: multiple threads operating in parallel on the same stream
1694 could cause buffer-overflows.
1695 * bug fix: source location information is stored correctly
1696 (broken since 1.0.6). This bug would generally show up as the
1697 Slime debugger highlighting the wrong form when the sldb-show-source
1699 * bug fix: Branch forms are again annotated as branches in the sb-cover
1701 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1702 on x86-64. (reported by Gregory Vanuxem)
1703 * bug fix: EQUALP could return wrong results for structures with raw
1704 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1705 word). (reported by Vjacheslav Fyodorov)
1706 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1709 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1710 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1711 atomic compare-and-swap operations on threaded platforms.
1712 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1713 allows assigning a global minimum value to optimization qualities
1714 (overriding proclamations and declarations).
1715 * enhancement: closed over variables can be stack-allocated on x86
1717 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1719 * optimization: slot definition lookup is now O(1). This speeds up
1720 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1721 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1722 * optimization: ASSOC and MEMBER can now be open-coded for all
1723 combinations of keyword arguments when second argument is constant
1724 and SPEED >= SPACE. In other cases a specialized version is
1726 * bug fix: using obsoleted structure instances with TYPEP and
1727 generic functions now signals a sensible error.
1728 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1729 (reported by Kristoffer Kvello)
1730 * bug fix: backtrace construction is now more careful when making
1731 lisp-objects from pointers on the stack, to avoid creating bogus
1732 objects that can be seen by the GC.
1733 * bug fix: defaulting of values in contexts expecting more than 7
1734 variables now works on x86-64. (reported by Christopher Laux)
1735 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1737 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1738 as the property-list of a symbol.
1739 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1740 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1741 situations requested, are once again file-compileable. (reported
1744 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1745 * MOP improvement: support for user-defined subclasses of
1746 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1747 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1748 the expansion of DEFMETHOD, is responsible for generating a form
1749 which creates a list of specializers when evaluated. Additional
1750 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1751 debugging and introspective support.
1752 * minor incompatible change: the (unsupported) spinlock interface
1753 has changed: free spinlock now has the value NIL, and a held spinlock
1754 has the owning thread as its value.
1755 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1756 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1758 * enhancement: name of a socket-stream is now "a socket" instead of
1759 "a constant string".
1760 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1761 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1762 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1763 for generic functions. (Thanks to Tobias C. Rittweiler)
1764 * optimization: bignum printing speed has been improved by 20-40%
1765 (depending on the bignum size.)
1766 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1768 * bug fix: the cache used by the CLOS to store precomputed effective
1769 methods, slot offsets, and constant return values is now thread and
1771 * bug fix: generic function dispatch function updating is now thread
1772 and interrupt safe (in the sense that the known issues have been
1774 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1775 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1776 * bug fix: asdf systems with dependencies to the SB-POSIX or
1777 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1778 * bug fix: interrupt safety of applicable method computation has been
1781 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1782 * new contrib: sb-cover, an experimental code coverage tool, is included
1783 as a contrib module.
1784 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1785 significantly faster.
1786 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1787 produce more efficient code on x86-64 if the compiler can determine
1788 that (+ INDEX <constant>) does not require a bounds check and FOO
1789 has an element type at least 8 bits wide.
1790 * enhancement: a new, experimental synchronous timeout facility is
1791 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1792 * enhancement: when a symbol name conflict error arises, the
1793 conflicting symbols are always printed with a package prefix.
1794 (thanks to Kevin Reid)
1795 * enhancement: stepping is now once again supported on the SPARC and
1796 MIPS platforms. (It is also now more likely to work on CheneyGC
1798 * enhancement: sb-sprof can now also track and report accurate call
1800 * bug fixes: the treatment of non-standard subclasses of
1801 SB-MOP:SPECIALIZER is more correct.
1802 * incompatible change: PURIFY no longer copies the data from the
1803 dynamic space into the static and read-only spaces on platforms
1804 that use the generational garbage collector
1805 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1807 * bug fix: GC race condition occasionally resulting in crashes with
1808 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1810 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1812 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1813 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1814 * bug fix: an asynchronous interrupt could previously leave the
1815 system running with GC inhibited.
1816 * bug fix: a DECLARE form evaluated at top-level now causes an error
1817 rather than silently (or verbosely) returning NIL.
1818 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1819 result in a error being signalled due to source form lookup errors.
1820 (reported by Peter Graves)
1822 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1823 * incompatible change: removed writer methods for host-ent-name,
1824 host-ent-addresses -- changing the values did not update the DNS
1826 * minor incompatible change: changed experimental JOIN-THREAD interface
1827 * documentation: the manual now lists reader and writer methods
1828 in class slot documentation sections. (thanks to Richard M Kreuter)
1829 * documentation: unwinding from asyncronous events has been
1830 documented as unsafe.
1831 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1832 in multithreaded application code.
1833 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1834 platforms. (thanks to James Anderson for the optimization hint)
1835 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1837 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1838 variants no longer cons.
1839 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1840 their NOT- variants no longer cons.
1841 * optimization: EQUAL hash tables no longer use SXHASH for objects
1842 of all data types, but instead use an EQL hash for types for which
1843 EQUAL is the same as EQL.
1844 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1845 are significantly faster.
1846 * optimization: new STRING-OUTPUT-STREAM implementation is much
1847 faster for large outputs and conses 30% less on average.
1848 * enhancement: XREF information is now collected for references made
1849 to global variables using SYMBOL-VALUE and a constant argument.
1850 * enhancement: SIGINT now causes a specific condition
1851 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1852 * bug fix: FILE-POSITION used to signal an error in some cases where
1853 ANSI requires it to return NIL.
1854 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1855 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1856 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1858 * bug fix: bad type declaration in the CLOS implementation has
1859 been fixed. (reported by James Anderson)
1860 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1861 (thanks to Lutz Euler)
1862 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1863 required by the CLHS. (reported by Samium Gromoff)
1864 * bug fix: dead unbound variable references now signal an error.
1865 (reported by Marco Monteiro)
1866 * bug fix: / with an unused value was being deleted in safe code.
1867 (thanks to Marco Monteiro and Kevin Reid)
1868 * bug fix: number of characters that can be written onto a single
1869 line in a file is unlimited.
1870 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1871 been fixed by inhibiting interrupts for when GC is disabled.
1872 * bug fix: some interrupt safety issues with GETHASH, (SETF
1873 GETHASH), CLRHASH and REMHASH have been fixed.
1874 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1875 specifier no longer causes infinite recursion.
1876 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1877 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1878 * bug fix: an &environment argument with the correct variable information
1879 is passed to macros that are expanded during byte compilation.
1880 (reported by Samium Gromoff)
1881 * bug fix: a logic error was causing the hash function for bignums to
1882 have excessive amounts of collisions. (reported by Faré Rideau)
1883 * bug fix: modifying the contents of an array could change the return
1884 value of SXHASH on that array, which is only allowed for strings
1885 and bit vectors. (bug introduced in 0.9.16)
1886 * improvement: the x86-64/darwin port now passes all tests (except
1887 for the debugger tests) but should still be considered
1888 experimental until this is fixed.
1889 * improvement: a style-warning is signaled for CASE (etc) clauses with
1890 duplicate keys. (thanks to Kevin Reid)
1891 * improvement: macos/x86 and macos/x86-64 now use mach exception
1892 handlers for dealing with illegal instructions (for trapping and
1893 error handling) and memory protection violations (for GC).
1895 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1896 * new platform: experimental support for x86-64/darwin (MacOS).
1897 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1898 and getnameinfo sockets functions are used instead of gethostbyaddr
1899 and gethostbyname, on platforms where the newer functions are available.
1900 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1902 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1903 don't print the startup banner, but behave as if --noinform was passed
1904 as a command line argument. (thanks to Kevin Reid)
1905 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1906 * optimization: code using alien values with undeclared types is much faster.
1907 * optimization: the compiler is now able to open code SEARCH in more cases.
1908 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1909 * bug fix: using standardized COMMON-LISP special variables as loop
1910 variables no longer signals bogus package lock violations. (reported
1912 * bug fix: declaring local loop variables to be of a range-limited type
1913 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1914 (reported by Andras Simon)
1915 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1916 bugs remain on x86-64.)
1917 * bug fix: the #= and ## reader macros now interact reasonably with
1918 funcallable instances.
1919 * bug fix: type-checks for function arguments were compiled using the
1920 compiler policy settings of the wrong lexical environment (in 1.0.2
1922 * bug fix: SHADOW accepts characters as string designators, as required
1923 by the spec (thanks to Eric Marsden)
1924 * bug fix: fixed GC safety issues when foreign functions are called with
1925 non-base strings as arguments
1926 * bug fix: more consistent error output for fatal-compiler-warnings, like
1928 * bug fix: functions with proper names were showing up as NIL in
1929 backtraces (reported by Edi Weitz, regression in 1.0.2)
1931 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1932 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1933 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1934 produce more efficient code on the x86 if the compiler can determine
1935 that (+ INDEX <constant>) does not require a bounds check and FOO
1936 has an element type at least 8 bits wide.
1937 * bug fix: references to undefined variables are handled the same way
1938 in toplevel forms as in the normal compiler
1939 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1941 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1942 (thanks to Jon Buller)
1943 * improvement: faster compilation times for complex functions
1944 * improvement: added readlink support to SB-POSIX (thanks to Richard
1947 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1948 * improvement: experimental support for mach exception handling on
1949 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1951 * improvement: support for GBK external format.
1952 (thanks to Chun Tian (binghe))
1953 * improvement: the debugger now displays variables that have been closed
1954 over, in code compiled with (DEBUG 2) or higher
1955 * improvement: support for executable cores on NetBSD (thanks to
1957 * new feature: added a RESTART-FRAME debugger command
1958 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1959 be used to provide an implementation for FILE-POSITION on Gray streams
1960 (thanks to Eric Marsden)
1961 * new feature: add syslog, openlog and closelog support to SB-POSIX
1962 (thanks to Richard Kreuter)
1963 * optimization: the function call overhead in code compiled with
1964 a high DEBUG optimization setting is significantly
1965 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1966 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1967 (thanks to Tony Martinez)
1968 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1969 evaluated once (reported by Kevin Reid)
1970 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1971 works again (thanks to Kilian Sprotte)
1972 * bug fix: an error is signaled for tagbodies with duplicate tags
1973 (thanks to Stephen Wilson)
1974 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1975 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1976 stack frames from alien callbacks.
1977 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1978 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1979 65k pages (thanks to David Woodhouse)
1980 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1982 changes in sbcl-1.0.1 relative to sbcl-1.0:
1983 * new platform: FreeBSD/x86-64, including support for threading.
1984 * new feature: the compiler stores cross-referencing information
1985 about function calls (who-calls), macroexpansion (who-macroexpands)
1986 and special variables (who-binds, who-sets, who-references) for code
1987 compiled with (< SPACE 3). This information is available through the
1988 sb-introspect contrib.
1989 * new feature: users may subclass SEQUENCE, and have instances of
1990 these classes interoperate with standard Common Lisp functions if
1991 a number of methods are defined. (This feature is experimental
1992 and the interface subject to change based on feedback from SBCL
1993 users and the general community)
1994 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1995 x86/x86-64, rather than the previous fixed depth of 8
1996 * improvement: another pthread back-end of mutex "pthread-futex".
1997 * bug fix: non-ascii command-line arguments are processed correctly
1998 (thanks to Yaroslav Kavenchuk)
1999 * bug fix: non-required arguments were not passed correctly when a method
2000 defined using DEFMETHOD was called from a mop-generated method using
2001 CALL-NEXT-METHOD (reported by Pascal Costanza)
2002 * bug fix: recursion is now permitted in accessors through
2003 SLOT-UNBOUND. (reported by Pascal Costanza)
2004 * bug fix: an error was signaled at startup if the HOME environment
2005 variable was defined, but had an empty value (reported by Peter Van Eynde)
2006 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2007 signal a PROGRAM-ERROR, not a BUG.
2008 * bug fix: SB-POSIX:READDIR works when built with large file support.
2009 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2011 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2012 for better automatic indentation support. (thanks to Matt Pillsbury)
2013 * optimization: loading generic functions no longer takes O(n^2) time,
2014 proportional to the amount of methods in the generic function
2015 (reported by Todd Sabin and Jeremy Brown)
2016 * optimization: the FIND and POSITION family of sequence functions
2017 are significantly faster on arrays whose element types have been
2019 * improvements to the Windows port:
2020 ** Intermittent heap corruption problems have been fixed. (thanks
2021 to Alastair Bridgewater)
2022 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2024 ** Lisp is able to unwind foreign exception frames from alien
2025 callbacks. (thanks to Alastair Bridgewater)
2027 changes in sbcl-1.0 relative to sbcl-0.9.18:
2028 * improvement: experimental support for threading on FreeBSD/x86.
2029 (thanks to NIIMI Satoshi)
2030 * improvement: runtime option --dynamic-space-size can be used
2031 to set the size of the dynamic space reserved on startup.
2032 * improvement: floating point modes in effect are now saved in
2033 core, and restored on startup.
2034 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2035 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2036 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2037 threads are not running after *SAVE-HOOKS* have run.
2038 * improvement: writes to CLOS instance slots are type-checked in code
2039 compiled with (SAFETY 3)
2040 * improvement: floating-point exception handling on FreeBSD (thanks to
2042 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2043 (thanks to Zach Beane)
2044 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2046 * improvement: added support for the Shift-JIS external format.
2047 (contributed by NIIMI Satoshi)
2048 * improvement: callbacks are supported on Linux/PPC. (thanks to
2050 * bug fix: compiler bug triggered by a (non-standard) VALUES
2051 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2052 * bug fix: file compiler no longer confuses validated and already
2053 dumped structurres. (reported by Kaersten Poeck)
2054 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2055 fill-pointer signals a type-error as required. (thanks to
2057 * bug fix: disassemly of funcallable instances works.
2058 * bug fix: single stepping on PPC.
2059 * bug fix: fix thread-safety problems in the type system (generally
2060 manifesting as nonsensical errors like "STRING is a bad type specifier
2061 for sequences" or "The value 1 is not of type FIXNUM")
2062 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2063 (reported by Josip Gracin)
2064 * bug fix: an error is signaled for attempts to displace arrays with
2065 incompatible element types (thanks to Mario Mommer)
2066 * bug fix: more correct handling of wide characters in debug info
2067 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2068 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2069 and don't cause extra consing
2070 * optimization: MAP and MAP-INTO are significantly faster on vectors
2071 whose elements types have been declared.
2072 * Improvements to SB-SPROF:
2073 ** Support for allocation profiling
2074 ** Reduced profiling overhead, especially for long profiling runs
2075 * Improvements to the Windows port:
2076 ** floating point exceptions are now reported correctly.
2077 ** stack exhaustion detection works partially.
2078 ** more accurate GET-INTERNAL-REAL-TIME.
2079 ** better RUN-PROGRAM behaviour in case of errors in the child
2081 ** PROBE-FILE now simplifies pathnames correctly.
2082 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2083 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2084 1st 1970 (although time timezone data will be unreliable).
2085 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2087 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2088 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2089 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2091 * bug fix: two potential GC deadlocks affecting threaded builds.
2092 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2093 returns T (reported by Anton Kazennikov)
2094 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2095 with non-variable places
2096 * bug fix: remove a race condition in the setting of
2097 funcallable-instance functions, this should make threaded CLOS
2098 code more stable against memory faults.
2099 * bug fix: corruption of specials when unbinding is interrupted by an
2100 asynchronous unwind (reported by Hannu Koivisto)
2101 * improvement: the debugger will now also display local variables that
2102 are only used once, for code compiled with a DEBUG optimization quality
2105 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2106 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2107 * incompatible change: External-format support for FFI calls. The
2108 SB-ALIEN:C-STRING no longer implies an ASCII
2109 external-format. Instead the string is subject to external-format
2110 conversion. Additionally return values of type SB-ALIEN:C-STRING
2111 are by default of type (SIMPLE-ARRAY CHARACTER), not
2112 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2113 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2114 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2115 * incompatible change: SB-EXT package no longer contains the
2116 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2117 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2119 * incompatible change: the single-stepper is no longer available
2120 on Alpha, Mips and Sparc platforms.
2121 * minor incompatible change: the direct superclasses of
2122 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2123 not (STANDARD-OBJECT FUNCTION). This makes the
2124 class-precedence-lists of GENERIC-FUNCTION and
2125 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2127 * minor incompatible change: the default stream external format on
2128 non-unicode SBCL is no longer detected from the locale, but is always
2130 * new feature: Add a version of evaluator that uses an interpreter instead
2131 of the compiler. EVAL still uses the compiler by default, to switch it
2132 to use the interpreter, set the value of the variable
2133 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2134 * minor incompatible change: the single-stepper REPL has been merged
2135 with the normal debugger (see the "Stepping" heading of the debugger help
2136 for more details). The debugger command STEP will no longer switch
2137 to the single-stepper REPL.
2138 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2139 for a type now works.
2140 * bug fix: loading of default sysinit file works. (thanks to Leonid
2142 * bug fix: better detection of circularities in the file-compiler.
2143 (reported by Marco Monteiro)
2144 * bug fix: the CL pathname functions now work with files that have
2145 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2146 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2147 systems with Unix98 pty semantics.
2148 * bug fix: ASDF-INSTALL will now work with bsd tar.
2149 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2151 * bug fix: timers expiring in dead threads no longer cause a
2152 type-error (reported by Paul "Nonny Mouse").
2153 * bug fix: thanks to more lightweight single-stepper instrumentation,
2154 code compiled with (DEBUG 3) will compile and execute significantly faster,
2155 and will have more accurate type-inferencing than before
2156 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2157 whose bindings are modified
2158 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2159 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2160 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2161 CL:SOFTWARE-VERSION with proper version
2163 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2164 * feature: implemented the READER-METHOD-CLASS and
2165 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2166 as specified by AMOP.
2167 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2169 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2170 (thanks to Lutz Euler)
2171 * optimization: hashing of general arrays and vectors has been
2172 improved. (reported by Any Fingerhut)
2173 * enhancement: SB-INTROSPECT is now able to find definitions of
2174 profiled functions. (thanks to Troels Henriksen)
2175 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2176 as well, allowing compiler-macros for SETF-functions to expand.
2177 * enhancement: step-instrumentation no longer wraps known
2178 single-value functions with multiple-value context, allowing
2179 better type inference.
2180 * fixed bug #337: use of MAKE-METHOD in method combination now works
2181 even in the presence of user-defined method classes. (reported by
2182 Bruno Haible and Pascal Costanza)
2183 * fixed bug #339(c): if there are applicable methods not part of any
2184 long-form method-combination group, call INVALID-METHOD-ERROR.
2185 (reported by Bruno Haible)
2186 * fixed bug #361: the :FUNCTION initarg in the protocol for
2187 initialization of methods can now be used to override
2188 internally-produced optimized functions. (reported by Bruno
2190 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2191 system-provided lambda expression no longer cause warnings about
2192 unbound #:|pv-table| symbols.
2193 * bug fix: improved the handling of type declarations and the
2194 detection of violations for keyword arguments with non-constant
2196 * bug fix: potentially erronous calls to PATHNAME and
2197 MERGE-PATHNAMES were being flushed in some cases.
2198 (reported by Richard Kreuter)
2199 * bug fix: compiled calls to TYPEP were mishandling obsolete
2200 instances. (reported by James Bielman and Attila Lendvai)
2201 * bug fix: format strings with ~> without matching ~< no longer
2202 trigger an AVER, but signal an understandable error instead.
2203 (reported by Antonio Martinez)
2204 * bug fix: specifying an output-file without a pathname-type for
2205 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2206 of input-file instead of "fasl". (reported by Robert Dodier)
2207 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2208 (reported by James Y Knight).
2209 * bug fix: compiler-macros-function did not consider the environment
2210 argument for shadowing by local functions.
2211 * bug fix: compiler-macros expansion was inhibited by local INLINE
2213 * bug fix: inline expansions of known functions were subject to
2214 step-instrumentation in high debug policies, leading to problems
2215 with type-inference.
2216 * bug fix: compiler failed to differentiate between different CONS
2217 types in some cases.
2218 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2219 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2220 * bug fix: #368: incorrect use of expressed vs. upgraded array
2222 * bug fix: #306a: more precise unions of array types.
2223 * thread-safety improvements:
2224 ** CONDITION-WAIT could return early on Linux, if the thread was
2225 interrupted and subsequently continued with SIGCONT.
2226 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2228 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2229 * added support for the ucs-2 external format. (contributed by Ivan
2231 * minor incompatible change: pretty printing of objects of type
2232 (cons symbol) is, in the default pprint-dispatch-table, now
2233 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2235 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2236 called later in a class's lifetime, possibly as late as when the
2237 first instance of the class is created. Previously,
2238 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2239 class became finalizeable.
2240 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2241 for multibyte external-format streams. (thanks to "vbzoli")
2242 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2243 with :ALLOCATION :CLASS inherited from superclasses of the
2245 * fixed bug: anonymous classes can now be created using the :NAME
2246 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2247 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2248 * fixed bug: core-files saved with :EXECUTABLE T can again be
2249 executed when SBCL_HOME isn't set. (reported by James Knight)
2250 * fixed bug: toplevel LOCALLY forms with declarations could
2251 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2252 * fixed bug: printing from several different threads using different
2253 values of *print-case* could cause invalid output, due to
2254 some internal special variables of the printer not being bound
2255 thread-locally (reported by Max Mikhanosha)
2256 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2257 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2258 (reported by Pascal Costanza)
2259 * fixed bug: FINALIZE-INHERITANCE is called from
2260 REINITIALIZE-INSTANCE on classes when the class has previously
2261 been finalized, as required by AMOP.
2262 * minor code generation optimizations:
2263 ** better register allocation in CLOS dispatching functions
2264 ** overflow detection when coercing signed bytes to fixnums on x86-64
2265 ** is now implemented with one IMUL instruction instead of three shifts
2266 ** more efficient bit-vector access on x86 and x86-64
2267 ** more efficient access to raw structure slots on x86 and x86-64
2268 * fixed some bugs revealed by Paul Dietz' test suite:
2269 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2270 return its argument.
2272 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2273 * feature: thread support on Solaris/x86, and experimental thread support
2275 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2277 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2278 default method for SLOT-UNBOUND.
2279 * minor incompatible change: prevent the user from specializing the
2280 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2281 somewhat counter to the intent of the protocol, I (CSR) think, and
2282 additionally it just doesn't work in SBCL as currently
2283 implemented, thanks to optimizations (that are always valid for
2284 the other three SLOT-VALUEish functions, but not for the setter).
2285 * minor incompatible change: the :SB-LDB feature is now enabled by
2286 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2287 the low-level debugger.
2288 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2289 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2290 down to an SB-SYS:FD-STREAM, allowing direct communication in
2291 more cases. Temporary files and pipes are still used as a fallback
2293 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2294 on the non-reentrant C functions localtime(3) and gmtime(3).
2295 * bug fix: global optimization policy was not visible in LOCALLY and
2297 * bug fix: class objects can be used as specializers in methods.
2298 (reported by Pascal Costanza)
2299 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2300 with a type error. (reported by blitz_ on #lisp)
2301 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2302 failed with a type error. (reported by Pascal Bourguignon)
2303 * bug fix: merging pathnames against defaults with :DIRECTORY
2304 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2305 (reported by James Y Knight)
2306 * bug fix: saving large (>2GB) cores on x86-64 now works
2307 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2308 constant index and a (simple-array (signed-byte 32)) array
2309 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2310 error (patch by Robert J. Macomber)
2311 * feature: TIME now displays the amount of run-time spent in GC
2312 * bug fix: The debugger now does a better job of respecting
2313 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2314 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2315 workaround for bug 403.)
2316 * bug fix: floating point exception handling now works on FreeBSD
2317 (thanks to NIIMI Satoshi)
2318 * fixed some bugs revealed by Paul Dietz' test suite:
2319 ** MISC.641: LET-conversion were not supposed to work in late
2321 * improvements to the Win32/x86 port:
2322 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2323 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2325 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2326 * new feature: source path information is generated for macro-expansion
2327 errors for use in IDE's like Slime (thanks to Helmut Eller)
2328 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2329 * bug fix: compiler does not loop forever on an invalid type in
2331 * improvement: compilation of most CLOS applications is significantly
2333 * optimization: added a limited bytecode compiler for simple toplevel
2334 forms, speeding up compilation and FASL loading
2335 * bug fix: the statistical profiler now properly distinguishes anonymous
2338 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2339 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2340 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2341 into subclasses of the finalized class. Now user calls to
2342 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2343 system return before any subclasses are finalized.
2344 * minor incompatible change: The reader no longer ignores errors
2345 regarding non-existent packages in #+ and #- feature tests.
2346 * new feature: command line options --no-sysinit, --no-userinit to
2347 inhibit loading the corresponding init files
2348 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2349 for sending data through UDP sockets (thanks to François-René Rideau)
2350 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2351 error is signalled instead (thanks to François-René Rideau)
2352 * minor incompatible change: Error signalling behaviour of lexical
2353 operations violating package locks has changed slightly. Refer to
2354 documentation on package locks for details.
2355 * enhancement: EVAL can process IF-expressions without resorting to the
2357 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2358 constant-folded properly due to missing out-of-line functions.
2359 (reported by Mika Pihlajamäki)
2360 * bug fix: LISTEN sometimes returned T even in cases where no data was
2361 immediately available from the stream
2362 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2363 were reversed. (reported by Levente Mészáros)
2364 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2365 when given a vector displaced to an adjustable array. (reported
2367 * bug fix: derivation of float boundaries from numbers outside the
2368 appropriate float range (reported by John Wiseman)
2369 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2371 * bug fix: precomputing cache entries for generic functions with
2372 some subclasses of specializers as yet invalid does not attempt to
2373 fill a cache line with a negative offset. (reported by Levente
2375 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2376 allow condition class objects as arguments to DOCUMENTATION and
2377 (SETF DOCUMENTATION); only find and set documentation for
2378 structure names for the STRUCTURE doc-type. (suggested by Gary
2380 * improvements to the Win32/x86 port:
2381 ** (user-homedir-pathname) and default initialization file
2382 locations now know about the user's "Documents and Settings"
2383 directory (thanks to Yaroslav Kavenchuk)
2384 ** run-program is implemented (thanks to Mike Thomas)
2385 ** sockets support (thanks to Timothy Ritchey)
2386 ** better backtrace support (thanks to Alastair Bridgewater)
2387 ** sb-grovel supported
2388 ** asdf-install and sb-posix work somewhat
2389 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2390 * improvements to the Solaris/x86 port:
2391 ** works on Solaris 11/Solaris Express
2392 ** floating-point exception handling support
2393 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2394 * fixed some bugs revealed by Paul Dietz' test suite:
2395 ** REMOVE-METHOD returns its generic function argument even when
2396 the method is not one of the generic functions' methods.
2397 ** objects declared as MEMBER types can be admissible arguments to
2398 structure accessors.
2399 ** printing characters should simply be printed by the FORMAT ~:C
2401 ** compiler failure when compiling functions with hairy constant
2402 defaults for optional parameters.
2403 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2404 function, which is already optimized.
2406 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2407 * new platform: experimental support for SBCL x86/Darwin, including
2408 MacOS X 10.4.5 on Intel.
2409 * new feature: Unicode character names are now known to the system
2410 (through CHAR-NAME and NAME-CHAR).
2411 * new feature: the filesystem location of SBCL's core file is
2412 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2413 * minor incompatible change: the contrib modules SB-POSIX and
2414 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2415 this change is to make it easier to distribute
2416 location-independent binaries.
2417 * bug fix: as implied by AMOP, standardized classes no longer have
2418 slots named by external symbols of public packages. (reported by
2420 * optimization: calling functions via constant symbols -- as in
2421 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2422 via the function object as in (FUNCALL #'FOO).
2423 * optimization: on x86 and x86-64, the calling convention for the
2424 case of dealing with an unknown number of values has been altered
2425 to be friendlier to the prediction heuristics implemented,
2426 particularly with reference to CALL and RET pairing. (thanks to
2427 Alastair Bridgewater)
2428 * optimization: on x86, the code for access to thread-local symbol
2429 values and binding/unbinding of thread-local symbols is smaller.
2430 (thanks to Alastair Bridgewater)
2431 * enhancement: CONSTANTP is now able to determine constantness of
2432 more complex forms, including calls to constant-foldable standardized
2433 functions and some special forms beyond QUOTE.
2434 * fixed bug: occasional GC crashes on Solaris/x86
2435 * optimization: x86-64 supports stack allocation of results of simple
2436 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2437 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2438 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2439 (thanks to James Knight)
2440 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2441 by the standard (thanks to Stephen Compall)
2443 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2444 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2445 be used for bundling the runtime and the core file into one
2446 executable binary. This feature is not currently supported on all SBCL
2447 platforms. (thanks to James Bielman and NIIMI Satoshi)
2448 * new feature: a generational or ephemeral garbage collector is now
2449 the default on the PowerPC platform (both Linux and Darwin). The
2450 old Cheney (stop and copy) collector is a build-time option.
2451 (thanks to Cyrus Harmon, after Raymond Toy)
2452 * minor incompatible change: the method by which SBCL finds its
2453 contributed modules has changed; it no longer relies on symbolic
2454 links from an $SBCL_HOME/systems directory, but searches directly
2455 in the subdirectories of $SBCL_HOME.
2456 * enhancement: the dynamic heap size on the Linux/PPC platform is
2457 markedly larger, even using the older Cheney garbage collector.
2458 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2459 certain complicated string types. (reported by Gary King)
2460 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2461 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2462 * fixed bug: DOCUMENTATION on structures no longer signals an
2463 error if no structure type of the right name exists. (reported by
2465 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2466 applicable non-standard primary or :AROUND method on
2467 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2468 no longer cause unbound variable errors. (reported by Kevin Reid)
2469 * fixed bug: metacircle resolution in cases where methods have slots
2470 added before the slots from STANDARD-METHOD. (reported by Jean
2472 * fixed bug: the Power PC assembly code for calling into lisp
2473 sometimes computed its return address wrongly (depending on the
2474 15th bit of the address, fixed at link time). This used to
2475 manifest itself in a segmentation violation while building PCL.
2476 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2477 many others over the years)
2478 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2479 the stack pointer (treated as a signed integer) is negative.
2480 (thanks to Peter van Eynde)
2482 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2483 * new platform: experimental support for the Windows operating
2484 system has been added. (thanks to Alastair Bridgewater)
2485 * fixed several bugs in and robustified the PPC FFI (including
2486 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2487 * bug fix: allow non-simple string symbol names (reported by Paul
2489 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2491 * bug fix: saving a core corrupted callbacks on x86/x86-64
2492 * bug fix: closed a loophole in metacircularity detection and
2493 grounding in the PCL implementation of CLOS.
2494 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2495 (reported by tomppa on #lisp)
2496 * bug fix: clear the direction flag on Lisp -> C transitions, as
2497 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2498 (reported by Andrej Grozin and Hendrik Maryns)
2499 * optimization: major improvements to GC efficiency on GENCGC platforms
2500 * optimization: faster implementation of EQUAL
2501 * optimization: emit more efficient opcodes for some common
2502 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2503 * optimization: several other minor code-generation improvements on x86-64
2504 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2506 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2507 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2508 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2509 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2510 by ANSI as a generic function, and for consistency (SETF
2511 GENERIC-FUNCTION-NAME) is treated likewise.
2512 * fixed bug #233.b: make constraint propagation notice when a variable
2513 value is changed after it is referenced but before it is used
2514 * fixed bug #296: no more arbitrary behaviour from filenames with
2515 odd characters as --load arguments. (reported by Adam Warner)
2516 * fixed bug #390: :CHARACTER-SET pathname components now work as
2517 expected. (reported by Tim Daly Jr)
2518 * fixed bug #391: complicated :TYPE intersections in slot
2519 definitions no longer cause an error in PCL internals.
2520 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2521 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2522 returning the number of octets which would be written to the
2523 file-stream. (thanks to Robert J. Macomber)
2524 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2525 arguments to the internal stream functions. (thanks to David
2527 * bug fix: stack exhaustion is now handled on the x86/SunOS
2528 platform. (thanks to Daisuke Homma)
2529 * bug fix: more accurate ROOM results on GENCGC platforms
2530 * optimization: improved type inference for arithmetic-for
2531 index variables in LOOP
2532 * optimization: faster floating-point SQRT on x86-64
2533 * fixed some bugs revealed by Paul Dietz' test suite:
2534 ** DOCUMENTATION returns NIL instead of "" for method combinations
2535 that don't have a docstring
2537 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2538 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2539 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2540 therefore are not customizeable by user code (as seems to be at
2541 least permitted and maybe required by AMOP). As a consolation,
2542 however, the SBCL implementation of these functions now calls
2543 REINITIALIZE-INSTANCE as specified by AMOP.
2544 * bug fix: slot-definition documentation is propagated as per ANSI
2545 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2546 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2547 argument, as do eslotd initialization methods. (from Pascal
2548 Costanza's "Closer" project)
2549 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2550 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2552 * bug fix: it is now possible to have more than one subclass of
2553 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2554 (reported by Bruno Haible, Pascal Costanza and others)
2555 * bug fix: the dependent update protocol now works for generic
2556 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2557 and Pascal Costanza)
2558 * bug fix: condition-class instances corresponding to
2559 DEFINE-CONDITION forms are now created eagerly. (reported by
2560 Kalle Olavi Niemitalo on comp.lang.lisp)
2561 * bug fix: floating point printing is more accurate in some
2562 circumstances. (thanks to Simon Alexander)
2563 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2564 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2565 * bug fix: callbacks on OS X now preserve stack-alignment.
2566 (thanks to Cyrus Harmon)
2567 * enhancement: the x86-64 disassembler is much better at
2568 disassembling SSE instructions. (thanks to Lutz Euler)
2569 * enhancement: CHECK-TYPE on a variable now allows type-inference
2570 (thanks to Vincent Arkesteijn)
2571 * optimization: improved performance of EUC-JP external format.
2572 (thanks to NIIMI Satoshi)
2573 * optimization: performance improvements to IO on file streams of
2574 :ELEMENT-TYPE CHARACTER
2575 * optimization: much faster memory allocation on x86-64
2576 * optimization: faster garbage collections (latency and throughput)
2578 * optimization: faster bignum subtraction and division on x86 and x86-64
2579 (thanks to Lutz Euler)
2580 * optimization: more accurate type-inference for loops that use a
2581 floating point index variable or a negative step.
2583 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2584 * bug fix: add a workaround to SBCL looping infinitely at startup on
2585 Linux kernels with apparently buggy implementations of personality().
2586 (thanks to Svein Ove Aas)
2587 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2588 (thanks to David Lichteblau)
2589 * bug fix: local bindings shadow global symbol macros for
2590 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2591 * optimization: non-open coded uses of numeric comparison operators
2592 (e.g. >) no longer cons when called with more than one parameter
2593 on platforms supporting dynamic-extent allocation.
2594 * enhancement: saving cores with foreign code loaded is now supported
2595 on MIPS/Linux in addition to the previously supported platforms.
2596 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2597 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2598 * bug fix: division by zero in sb-sprof when no samples were collected
2599 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2600 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2601 (thanks to Alexander Kjeldaas)
2602 * new feature: ignoring the return values of destructive functions
2603 like NREVERSE signals a compile-time style-warning.
2604 (thanks to Kevin Reid)
2605 * new feature: the alignment of alien structure fields can be
2606 explicitly specified. (thanks to Cyrus Harmon)
2607 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2608 and dump core on SIGQUIT
2610 ** incompatible change: threads do not inherit values of specials
2611 from their parents (see manual)
2612 ** bug fix: threads stacks belonging to dead threads are freed by the
2613 next exiting thread, no need to gc to collect thread stacks anymore
2614 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2615 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2616 ** bug fix: dynamic variable and thread start related gc lossage
2617 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2619 * fixed some bugs revealed by Paul Dietz' test suite:
2620 ** SUBTYPEP is slightly more accurate on heinously complicated
2621 CONS types where some of the members have uncertain (in the
2622 NIL, NIL sense) type relationships to each other.
2624 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2625 no longer purified unless :PURIFY T is explicitly specified.
2626 ** Non-purified cores are significantly smaller than before
2628 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2629 * new feature: timers based on Zach Beane's excellent timer package
2630 * added support for the following external formats: koi8-u,
2631 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2632 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2633 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2634 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2635 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2636 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2637 * incompatible change: a threaded SBCL will no longer revert to
2638 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2639 * bug fix: interrupts are disabled until startup is complete; no
2640 more sigsegvs when receiving a signal to soon
2641 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2643 * bug fix: add a workaround for the memory randomization features in
2644 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2645 workaround will only be in effect on systems with the proc filesystem
2647 * bug fix: printing objects of type HASH-TABLE signals a
2648 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2650 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2651 have been running for over 50 days. (reported by Gilbert Baumann)
2652 * bug fix: the logic for getting names of functions gets less
2653 confused when confronded with alternate-metaclass
2654 funcallable-instances. (reported by Cyrus Harmon)
2655 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2656 consistent, even on internal alternate-metaclass objects.
2657 * bug fix: flush closure information collected by physical
2658 environment analysis prepass before the main pass. (bug reported
2660 * bug fix: compiler pack phase does not modify a hashtable, which is
2661 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2662 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2663 may be expanded. (reported by Alexander <malishev> on c.l.l)
2664 * bug fix: no more style-warnings when compiling code using LAST
2665 under high-SPEED low-SPACE settings. (reported by David Wallin
2667 * fixed some incompatibilities between SBCL's MOP and the MOP
2669 ** the METAOBJECT class is now implemented;
2670 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2671 STANDARD-OBJECT, as required;
2672 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2673 now compatible (as required by VALIDATE-SUPERCLASS); there
2674 remains a consistency requirement over the presence or absence
2675 of the FUNCTION class in the superclass list of finalized
2676 classes; see the manual for more details;
2677 ** the :AROUND method for COMPUTE-SLOTS on
2678 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2679 requested slot ordering.
2681 ** bug fix: parent thread now can be gc'ed even with a live
2683 ** bug fix: binding a special with PROGV to no value is not
2684 the same as that symbol not having been bound (thanks to
2686 ** bug fix: binding specials is thread safe (thanks to
2688 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2689 and SB-SPROF do not die with 'no handler for signal XX in
2690 interrupt_handle_now(..)' anymore
2691 ** bug fix: WITH-TIMEOUT works with multiple running threads
2692 * fixed some bugs revealed by Paul Dietz' test suite:
2693 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2694 the :method-class keyword argument.
2696 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2697 * new port: the Solaris operating system on x86 processors is now
2698 mostly supported, though some rough edges in the environment
2699 remain. (thanks to Daisuke Homma)
2700 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2701 space for its heap. (thanks to Thiemo Seufer)
2702 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2703 closures. (thanks to Thiemo Seufer)
2704 * minor incompatible change: eof selects abort in the debugger.
2705 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2706 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2708 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2709 deprecated, and will go away in a future revision of SBCL.
2710 * minor incompatible change: GC-ON and GC-OFF are no longer
2711 implemented with a counter, it does not matter how many times gc
2712 is switched on or off
2713 * bug fix: discriminating functions for generic function classes
2714 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2715 make invalid assumptions about method precedence order. (reported
2717 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2718 platforms. (thanks to Thiemo Seufer)
2719 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2720 * bug fix: correct pathname printing with printer escaping is on.
2721 (thanks to Kevin Reid)
2722 * bug fix: complex VOP definitions in "user-space" no longer trigger
2723 package locks. (reported by Zach Beane)
2724 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2725 for funcallable-instance functions, and is no different from
2727 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2728 characters in the current readtable. (reported by Nicholas Neuss)
2729 * bug fix: SUBTYPEP on various CONS types returns more a more
2730 accurate acknowledgment of its certainty.
2731 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2732 lists in some cases. This partially fixes bug 384.
2733 * flush all standard streams before prompting in the REPL and the
2735 * bug fix: signal handling and triggering gc do not conflict
2736 directly anymore, in particular a high frequency sb-sprof does
2737 not prevent gc from running
2738 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2739 approximation for timezone and DST information between the
2740 universal time epoch and the smallest negative 32-bit time_t.
2741 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2742 year 1899 so long as the encoded time is non-negative.
2743 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2744 the correct answer for non-constant rotate amounts when performing
2745 an inline 32-bit rotation.
2747 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2748 there is only one thread in the session
2749 ** bug fix: memory leak for streams created in one thread and
2750 written to in another
2751 ** bug fix: lockup when compiled with gcc4
2752 ** bug fix: race that allows the gc to be triggered when gc is
2754 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2755 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2757 ** bug fix: finished threads are gc'ed properly
2758 * fixed some bugs revealed by Paul Dietz' test suite:
2759 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2760 has arguments with a different set of applicable methods from
2761 the orignal arguments.
2762 ** The type error thrown by MAP now has a correct expected-type
2764 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2765 name a compiled function.
2766 ** Three MISC tests where a large bignum was improperly coerced to
2767 a float that couldn't represent that bignum during type
2768 derivation were fixed.
2769 ** SUBTYPEP can now handle types involving the negation of a
2770 list-form FUNCTION type.
2771 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2772 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2773 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2775 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2776 * New feature: Experimental support for bivalent streams: streams
2777 opened with :element-type :default now allow character and binary
2778 (unsigned-byte 8) I/O
2779 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2780 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2782 * bug fix: no more highly sporadic "couldn't check whether ~S is
2783 readable" when reading a stream and an interrupt hits in the middle
2784 of a select system call
2785 * compiler better recognizes complex arrays (reported by Eduardo
2787 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2788 for variables on SBCL built with linkage-tables. (reported by Luis
2790 * various error reporting improvements.
2791 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2792 (Thanks to Thiemo Seufer)
2793 * bug fix: nested reader invokations work correctly
2794 * bug fix: it is possible to have simultaneous references to foreign
2795 code and foreign data with the same name.
2797 ** added x86-64 support
2798 ** incompatible change: the threading api now works with thread
2799 objects instead of thread ids
2800 ** bug fix: threads are protected from signals and interruption when
2801 starting up or going down
2802 ** bug fix: a race where an exiting thread could lose its stack to gc
2803 ** bug fix: don't halt on infinite error in threads if possible
2804 ** fixed numerous gc deadlocks introduced in the pthread merge
2805 ** bug fix: fixed thread safety issues in read and print
2806 ** bug fix: debugger doesn't hang on session lock if interrupted at
2807 an inappropriate moment
2808 ** bug fix: run-program is now thread safe(r)
2809 ** bug fix: inner with-recursive-lock no longer releases the mutex
2810 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2811 * fixed some bugs revealed by Paul Dietz' test suite:
2812 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2813 EXPECTED-TYPE slots filled.
2814 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2816 ** MAKE-CONDITION accepts classes as type-designators.
2817 ** COMPILE may never return NIL.
2818 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2819 range before calling Unix time functions
2821 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2822 * numerous signal handling fixes to increase stability
2823 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2824 * minor incompatible change: we now correctly canonize default
2825 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2826 as per the MOP, rather than the historical (INITARG INITFUNCTION
2827 INITFORM). (reported by Bruno Haible)
2828 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2829 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2830 for more information.
2831 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2832 pathname is a directory pathname.
2833 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2834 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2836 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2837 :METACLASS argument in addition to a class name. (reported by
2838 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2839 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2840 (reported by Bruno Haible; patch from Gerd Moellmann)
2841 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2843 * bug fix: more cleanups to the floating point exception handling on
2844 x86-64 (thanks to James Knight)
2845 * bug fix: the compiler does not try to constant fold calls of
2846 COERCE and BIT-* functions when they return freshly constructed
2847 objects. (reported by Nikodemus Siivola and Paul Dietz)
2848 * optimization: improved the MIPS versions of generic (in the
2849 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2850 * optimization: direct conversion of (unsigned-byte 32) to floats on
2851 the PowerPC platform.
2852 * optimization: structure instances with raw slots now use less
2853 memory, and probably show better memory locality. (thanks to
2855 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2856 are treated as requests for stack allocation on the x86-64,
2857 Alpha-32, PPC and SPARC platforms.
2858 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2859 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2860 (thanks to Tony Martinez)
2862 ** gcing a dead thread can no longer lead to lockups
2863 ** threads block signals until they are set up properly
2864 ** errno is no longer shared by threads
2865 ** interrupt-thread restores the eflags register on x86
2866 ** fixed some lockups due to gc/thread interaction
2867 * fixed some bugs revealed by Paul Dietz' test suite:
2868 ** invalid dotted lists no longer raise a read error when
2869 *READ-SUPPRESS* is T
2870 ** signal an error if a symbol that names a declaration is used
2871 as the name of a type, or vice versa
2872 ** allow using the (declare (typespec var*)) abbreviation for
2873 (declare (type typespec var*)) with all type specifiers
2874 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2875 ** always return NIL from PPRINT-POP when OBJECT is NIL
2876 ** don't signal errors when pretty-printing malformed LABELS,
2877 FLET or MACROLET forms
2878 ** declarations in a DOLIST body are also in scope for the
2880 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2882 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2885 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2886 * fixed cross-compiler leakages that prevented building a 32-bit
2887 target with a 64-bit host compiler.
2888 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2889 opened with :IF-EXISTS :OVERWRITE.
2890 * fixed bug 281: error for an invalid qualifier in a short-form method
2891 combination method is not signalled until the faulty method is called.
2892 * bug fix: iteration variable type inferrer failed to deal with open
2893 intervals. (reported by Alan Shields)
2894 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2895 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2896 or more runtime options were provided to the sbcl binary.
2897 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2898 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2899 * optimization: there's now a fast-path for fixnum arguments in the
2900 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2901 * optimization: the code generated on x86-64 is more compact thanks
2902 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2903 * bug fix: floating-point exception handling now partly works on
2904 x86-64. (Thanks to James Knight)
2905 * improvement to the MIPS backend from Thiemo Seufer: C-style
2906 64-bit long long arguments and return values to alien functions
2908 * fixed some bugs revealed by Paul Dietz' test suite:
2909 ** the type-error signalled from WARN has a filled-in DATUM slot.
2910 ** the type-error required when a stream is not associated with
2911 a file has the stream as its datum.
2912 ** type-errors on single-floats on x86-64 no longer have
2913 :INVALID-OBJECT as the datum
2914 ** the type-errors signalled for invalid function names now have
2915 a correct expected type
2916 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2917 for structures defined with a :TYPE. Documentation strings for
2918 typed structures are no longer immediately discarded
2919 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2920 broadcast streams and synonym streams. FILE-LENGTH now also works
2921 on broadcast streams.
2923 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2924 * incompatible change: the --noprogrammer option, deprecated since
2925 version 0.7.5, has been removed. Please use the equivalent
2926 --disable-debugger option instead.
2927 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2929 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2930 inoperational for a while now) has been completely removed.
2931 * null lexical environments are now printed as #<NULL-LEXENV>,
2932 significantly reducing the amount of clutter in typical backtraces.
2933 * documentation on weak pointers, finalization, and after GC hooks
2934 has been added to the manual.
2935 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2936 as other specialized array types, is much faster. SUBSEQ and
2937 COPY-SEQ on such arrays have also been sped up.
2938 * optimization: EQL is now more efficient when at least other argument
2939 is known to be of type (OR FIXNUM (NOT NUMBER)).
2940 * fixed bug: the runtime is now less vulnerable to changes in the
2941 size of the SBCL object on OS X, and virtual memory is reserved for
2942 all spaces that need to be at a fixed address.
2943 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2944 * fixed bug: finalizers and after GC hooks that cause consing are now
2946 * fixed bug: compiler error messages and summaries are now printed to
2947 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2948 * fixed inference of the upper bound of an iteration variable.
2949 (reported by Rajat Datta).
2950 * fixed bug 211e: calling local functions with duplicated constant
2951 keyword argument no longer causes a bogus style warning about an
2953 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2954 ftype declaration to be disregarded. (reported by Dave Roberts)
2955 * fixed bug 373: caused by erronous compilation of references to alien
2956 variables in the runtime on ppc/darwin.
2957 * fixed bug 376: CONJUGATE type deriver.
2958 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2959 (reported by Baughn on #lisp)
2960 * a cross-compiler bug on non-x86 platforms has been identified and
2961 fixed. (thanks to Bruno Haible)
2962 * improvements to the MIPS runtime code for increased stability.
2963 (thanks to Thiemo Seufer)
2964 * increased the maximimum compact environment size to allow
2965 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2966 * partial workaround for bug 135: don't name the function we're
2967 calling for hairy cases of EVAL, so as not to accumulate one environment
2968 entry per call to EVAL. (reported by Kevin Reid)
2969 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2970 * optimization: type testing for non-vector arrays should be faster.
2971 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2973 * bug fix: setting 31st element of a bit vector to zero did not work
2975 * bug fix: redefining a class definition which failed due to a
2976 previous accessor / function clash now works (but see BUGS entry
2977 #380 for more problems in this area). (thanks to Zach Beane)
2978 * the long form of DEFINE-METHOD-COMBINATION disables method group
2979 checking when given a single method group with pattern *. (thanks
2981 * on x86 compiler supports stack allocation of results of simple
2982 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2983 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2984 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2985 * fixed some bugs related to Unicode integration:
2986 ** the restarts for recovering from input and output encoding
2987 errors only appear when there is in fact such an error to
2989 * fixed some bugs revealed by Paul Dietz' test suite:
2990 ** MISC.549 and similar: late transformation of unsafe type
2991 assertions into derived types caused unexpected code
2993 ** SCALE-FLOAT type deriver is less wrong.
2994 ** type derivers for EXP, LOG and similar functions compute result
2995 types for complex arguments better.
2996 ** (MISC.563) CONJUGATE type deriver works for very restricted
2998 ** out-of-line type testers for character strings are available.
2999 ** EQUAL compiler transform understands specialness of objects
3001 ** accessing double-floats stored on the stack now works on x86-64.
3002 ** debugger internals could sometimes create invalid lispobjs,
3003 resulting in GC crashes.
3004 ** MISC.548: type check weakening can convert required type into
3006 ** initialization forms for bindings are not in scope of free special
3009 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3010 * incompatible change: thread support for non-NPTL systems has
3011 been removed - locking is buggy and unreliable. A threaded
3012 SBCL build will now warn at startup and refuse to create
3013 new threads, unless futex support is detected in the kernel
3014 * incompatible change: the top level REPL now has only an ABORT
3015 restart associated with it, not TOPLEVEL and ABORT as it used to.
3016 TOP and TOPLEVEL are now available as debugger commands for
3017 returning to the top level.
3018 * incompatible change: forms evaluated in the REPL now use the
3019 global optimization policy.
3020 * incompatible change: user- and system-initialization files are
3021 no longer processed with LOAD, but by READ and EVAL; hence the
3022 global optimization policy, startup package, readtable, etc,
3024 * The .fasl file format number has been incremented because of
3025 various incompatible changes.
3026 * internal entry point details and argument counts no longer appear
3027 in backtraces unless explicitly requested by setting
3028 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3029 * built-in and standard functions no longer have names like "top
3030 level local call to FOO".
3031 * fixed bug 32: functions defined in non-null lexical environments
3032 now have more legible printed representation
3033 * fixed bug 33: functions defined in non-null lexical environemnts
3034 are now more amenable to inspection by INSPECT.
3035 * workaround for bug 354: XEPs no longer appear in backtraces unless
3036 explicitly requested.
3037 * fixed bug: receiving the signal which results from attempting to
3038 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3039 SIGBUS on other *BSDs) on architectures where the C stack is also
3040 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3041 to debugger confusion or wild instability. (reported by Cheuksan
3043 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3044 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3045 (reported by Lutz Euler)
3046 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3047 compiled code. (reported by Paul Dietz)
3048 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3049 specialized parameter to a method to something that is not TYPEP
3050 the specializer is now possible.
3051 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3052 face of package deletion.
3053 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3054 pathname. (reported by David Tolpin on c.l.l)
3055 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3056 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3057 STRING-STREAM and FILE-STREAM, respectively.
3058 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3059 than previously; in addition, its test suite is now run on build.
3060 (thanks to Luke Gorrie)
3061 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3062 * optimization: added a immediate representation for single-floats
3064 * fixed some bugs revealed by Paul Dietz' test suite:
3065 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3066 ** attempting to create a package with a colliding nickname causes
3067 correctable errors to be signalled.
3068 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3069 ** several x86-64 backend bugs related to sign-extension of immediate
3072 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3073 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3074 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3076 * fixed loading of multiply forward-referenced layouts.
3077 (thanks to Cheuksan Wang)
3078 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3079 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3080 (see COMPILE-FILE documentation for details of :PRINT option)
3081 * fixed bugs 19 and 317: fixed-format floating point printing is
3082 more accurate. This also fixes a bug reported by Adam Warner
3083 related to the ~@F format directive.
3084 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3086 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3087 dispatch table if the from-char is a dispatch macro character.
3088 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3089 by the wordsize no longer ignore the last word. (reported by Lutz
3091 * fixed bug in type checking of dynamic-extent variables. (reported
3093 * optimization: sequence traversal functions use their freedom to
3094 coerce function designators to functions.
3095 * optimization: code with many calls to CLOS methods specialized on
3096 CLOS classes has had redundant type checks removed.
3097 * optimization: added declarations to speed up operations that access
3098 the internal character database (for example STRING-UPCASE)
3099 * optimization: comparison operations between floats and sufficiently small
3100 fixnums no longer create extra rationals
3101 * fixed some bugs related to Unicode integration:
3102 ** portions of multibyte characters at the end of buffers for
3103 character-based file input are correctly transferred to the
3104 start of the buffer at the next read.
3105 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3106 passing it through to OPEN.
3107 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3108 argument given to internal calls to OPEN.
3109 ** the built-in comment readers (introduced by character sequences
3110 ";" and "#|") are more forgiving to encoding errors; they will
3111 STYLE-WARN and then attempt to resync the stream at a character
3112 boundary. (thanks to Teemu Kalvas)
3113 * fixed some bugs in the x86-64 port:
3114 ** Negative short int return values from c-calls are sign-extended
3116 ** The stack is aligned to 16-bytes for c-calls, as required by
3117 the ABI. (thanks to Cheuksan Wang)
3118 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3119 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3120 for enums. (thanks to Vincent Arkesteijn)
3121 ** Multiple small optimizations and bugfixes for floating point
3123 * fixed some bugs revealed by Paul Dietz' test suite:
3124 ** Space, Tab, Linefeed, Return and Page have the invalid
3125 secondary constituent character trait.
3126 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3128 ** WITH-INPUT-FROM-STRING should only update the index place on
3130 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3131 works more reliably.
3132 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3133 with one-dimensional arrays with fill pointers.
3134 ** TYPE-OF failed on a complex with an integer realpart and a
3136 ** compiler failure during type inference for the code of form
3137 (IF (EQL X (THE ...)) ...) (MISC.535).
3139 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3140 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3141 platform. The port supports 61-bit fixnums, large memory spaces
3142 and reloading shared object files.
3143 * enhancement: saving cores with foreign code loaded is now
3144 supported on ppc/Darwin in addition to the previously supported
3146 * enhancement: the statistical profiler now walks deeper into the
3147 call stack for more meaningful call-graphs and accrued time
3148 reports (x86/x86-64 only). It also now reports time spent in
3150 * enhancement: it is now possible to trace most individual methods
3151 of a generic function in addition to tracing the generic function
3153 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3155 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3156 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3157 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3158 produces an error. (thanks to Vincent Arkesteijn)
3159 * bug fix: NAMESTRING on pathnames with :WILD components in their
3160 directories works correctly. (thanks to Artem V. Andreev)
3161 * fixed bug 125: compiler preserves identity of closures. (reported
3163 * bug fixed: functions with &REST arguments sometimes failed with
3164 "Undefined function" when compiled with (DEBUG 3). (reported by
3166 * bug fix: overflow during compiling of setting element of a bit
3167 vector with constant index and value. (reported by Timmy Douglas)
3168 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3169 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3170 * on x86 compiler partially supports stack allocation of dynamic-extent
3172 * GO and RETURN-FROM do not check the extent of their exit points
3173 when compiled with SAFETY 0.
3174 * fixed some bugs related to Unicode integration:
3175 ** encoding and decoding errors are now much more robustly
3176 handled; it should now be possible to recover even from invalid
3177 input or output to the terminal. (thanks to Teemu Kalvas)
3178 ** provided a first cut at implementing STRING-TO-OCTETS and
3179 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3180 ** altered the SB-MD5 contributed module slightly, changing the
3181 interface just enough for it to be supportable for builds where
3182 lisp characters are not eight bits.
3183 * fixed some bugs revealed by Paul Dietz' test suite:
3184 ** the FORMATTER-generated functions for ~V[ conditionals require
3185 the correct number of arguments.
3186 ** READ-FROM-STRING returns the mandated second value when applied
3187 to displaced strings.
3188 ** the #\Rubout and #\Backspace characters are treated as invalid
3189 constituent characters by the tokenizer.
3191 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3192 * new feature: reloading changed shared object files with
3193 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3194 * new feature: references to foreign variables and functions
3195 can now be compiled and loaded before the corresponding shared
3196 object file is loaded, as long as the foreign definitions are
3197 available at runtime.
3198 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3199 supported. (thanks to Dan Debertin)
3200 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3201 just keywords. (thanks to Vincent Arkesteijn)
3202 * fixed bug #331: structure-class instances corresponding to
3203 DEFSTRUCT forms are now created eagerly.
3204 * fixed bug #345: backtraces from calls to undefined functions work
3205 on x86 as well. Related bug #61 is now also partially fixed on x86
3206 (backtraces from throws to unknown catch tags.)
3207 * bug fix: lambda-list parsing is now stricter vrt. order and number
3208 of lambda-list keywords.
3209 * bug fix: as specified by AMOP, an error is signalled if a
3210 class-option appears multiple times in a DEFCLASS form. (reported
3212 * bug fix: RANDOM can be compiled when the compiler derives the type
3213 of its numeric argument as a disjoint set of small integers.
3214 (reported by Paul Dietz)
3215 * bug fix: starting a core saved with shared objects loaded when
3216 those objects are not available no longer causes threaded SBCL to
3217 hang. (reported by Sean Ross)
3218 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3220 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3221 argument, which must always be NIL. (reported by Kalle Niemitalo)
3222 * bug fix: printing 1.0d+23 no longer results in an error.
3223 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3224 * bug fix: structure slot setters preserve evaluation order. (thanks
3226 * fixed some bugs related to Unicode integration:
3227 ** RUN-PROGRAM can allow its child to take input from a Lisp
3228 stream. (reported by Stefan Scholl)
3229 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3230 locales. (reported by Ken Causey)
3231 * fixed some bugs revealed by Paul Dietz' test suite:
3232 ** INCF, DECF and REMF evaluate their place form as specified in
3234 ** FORMATTER expands ~{ ~} iteration directives with V or #
3235 parameters correctly.
3236 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3237 consequent uses no arguments correctly.
3238 ** the system has a partial understanding of the (COMPLEX RATIO)
3240 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3243 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3244 * new feature: a build-time option (controlled by the :SB-UNICODE
3245 keyword feature, enabled by default) for building the system with
3246 support for the entire 21-bit character space defined by the
3248 * new feature: the system now has rudimentary external-format
3249 support; the primary user-visible change at this time is that
3250 characters with the high bit set (such as lower-case-e-acute) will
3251 print correctly to a terminal in a UTF-8 environment.
3252 * minor incompatible change: BASE-CHAR no longer names a class;
3253 however, CHARACTER continues to do so, as required by ANSI.
3254 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3255 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3256 has been moved to the SB-EXT package (temporarily re-exported from
3258 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3259 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3261 * fixed bug #351: better error-handlind and reporting for malformed
3263 * fixed bug #350: bignum-printing is now more memory-efficient,
3264 allowing printing of very large bignums, eg. (expt 2 10000000).
3265 (reported by Bruno Haible)
3266 * fixed bug #302: better primitive-type selection for intersection
3268 * fixed bug #308: non-graphic characters now all have names, as
3269 required. (reported by Bruno Haible)
3270 * bug fix: redefining a class with different superclasses now correctly
3271 removes it from the direct-subclasses of its previous superclasses.
3272 (reported by David Morse)
3273 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3274 new value now works. (reported by Bruno Haible)
3275 * bug fix: correct canonicalization of multiple non-standard slot
3276 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3277 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3278 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3279 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3280 now exists, an signals an error.
3281 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3282 during macroexpansion for non-iteration variables as well. (reported
3283 by Bruno Haible for CMUCL)
3284 * bug fix: Cyclic structures and unprintable objects in compiler
3285 messages no longer cause errors. (reported by Bruno Haible)
3286 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3287 and READ-FROM-STRING all now return a primary value of NIL if
3288 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3289 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3290 (reported by Bruno Haible for CMUCL)
3291 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3292 do not designate a condition. (reported by Bruno Haible for
3294 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3295 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3296 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3297 permitting resolution in favour of any of the conflicting symbols.
3298 (reported by Bruno Haible for CMUCL)
3299 * bug fix: EQUAL compiler optimizations is less aggressive on
3300 strings which can potentially compare true despite having distinct
3301 specialized array element types.
3302 * bug fix: unit enumerations can be defined without dividing by
3303 zero. (thanks to Vincent Arkesteijn)
3304 * FORMAT compile-time argument count checking has been enhanced.
3305 (report from Bruno Haible for CMUCL)
3306 * a partial workaround for the bug 262: the compiler does not try to
3307 inline-expand a local function doing RETURN-FROM from a deleted
3308 BLOCK. (thanks to Peter Denno for the bug report and to David
3309 Wragg for the simple test case)
3310 * fixed some bugs revealed by Paul Dietz' test suite:
3311 ** RENAME-PACKAGE allows all package designators as new package
3313 ** constraint propagation and lambda variable substitution are
3314 more cautious in dealing with partially deleted code.
3315 ** compiler sometimes lost reoptimization passes.
3316 ** CERROR, given a condition as condition designator, passes its
3317 remaining arguments to the continue format control without
3319 ** Case-altering FORMAT directives work correctly on non-ASCII
3321 ** The REAL type specifier handles bounds outside the floating
3322 point ranges without signalling FLOATING-POINT-OVERFLOW.
3323 ** Functions with IR1-transformations can create intercomponent
3324 references to global functions.
3325 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3327 ** FORMAT ~R treats a nil value for its first parameter correctly.
3329 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3330 * enhancement: saving cores with foreign code loaded is now
3331 supported on x86/NetBSD and sparc/Linux in addition to the previously
3332 supported platforms.
3333 * bug fix: on some platforms repeated installations caused multiple
3334 copies of HTML documentation to be installed -- should not happen
3335 any more. (reported by Stefan Scholl)
3336 * bug fix: parsing self-recursive alien record types multiple times
3337 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3338 original patch by Helmut Eller for CMUCL)
3339 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3340 (thanks to Richard Kreuter)
3341 * bug fix: defining classes whose accessors are methods on existing
3342 generic functions in other (locked) packages no longer signals
3343 bogus package lock violations. (reported by François-René Rideau)
3344 * bug fix: special variables as DEFMETHOD parameters no longer have
3345 associated bogus type declarations. (reported by David Wragg and
3347 * bug fix: read-write consistency on streams of element-type
3348 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3349 * bug fix: redefiniton of the only method of a generic function with
3350 no DEFGENERIC no longer emits a full WARNING. In addition,
3351 redefinition of generic functions with no DEFGENERIC to an
3352 incompatible lambda list now signals an error. (thanks to Zach
3354 * bug fix: DEFGENERIC now works even when there's a function of the
3355 same name in an enclosing lexical environment. (thanks to Zach
3357 * fixed compiler failure, caused by instrumenting code during
3358 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3359 * optimization: added loop analysis and improved register allocation
3360 * fixed some bugs revealed by Paul Dietz' test suite:
3361 ** POSITION on displaced vectors with non-zero displacement
3362 returns the right answer.
3363 ** (SIMPLE-STRING) is a valid type specifier for sequence
3365 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3367 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3368 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3370 ** The justification version of the FORMAT ~< directive treats
3371 non-zero minpad parameter correctly.
3373 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3374 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3375 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3376 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3377 the supported interface.
3378 * new feature: Single-stepping of code compiled with DEBUG 2 or
3379 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3380 * new feature: saving cores with foreign code loaded is now
3381 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3382 Timothy Moore's work for CMUCL)
3383 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3384 parameters to * instead of NIL if no initform is supplied.
3385 (reported by Johan Bockgaard)
3386 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3387 correctly when FUNCALL appears as the car of the form. Note:
3388 despite this FUNCALL forms are not currently subject to
3389 compiler-macro expansion. (port of Raymond Toy's fix for the
3390 same from CMUCL, reported by Johan Bockgaard)
3391 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3392 (thanks for Teemu Kalvas)
3393 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3394 case instead of terminating the iteration (thanks for Julian
3395 Squires, Sean Champ and Raymond Toy)
3396 * bug fix: incorrect expansion of defgeneric that caused a style
3397 warning. (thanks for Zach Beane)
3398 * bug fix: slot accessor effective method computation works properly
3399 for classes with multiple non-standard applicable methods on
3400 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3401 * on x86 compiler supports stack allocation of results of LIST and
3402 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3403 CMUCL implementation by Gerd Moellmann)
3404 * fixed some bugs revealed by Paul Dietz' test suite:
3405 ** FORMAT strings with both the ~<~:;~> form of the justification
3406 directive and pretty-printing directives cause an error.
3408 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3409 * incompatible change: the internal functions
3410 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3411 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3412 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3413 instead of the old functions.
3414 * new feature: on platforms where "dladdr" is available foreign
3415 function names now appear in backtraces. (based on Helmut Eller's
3417 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3418 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3420 * documentation: ASDF manual is now distributed with SBCL.
3421 * bug fix: SBCL can now load its contributed modules with REQUIRE
3422 even if the system-provided entries have been removed from
3423 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3425 * bug fix: backtraces involving undefined functions or assembly
3426 routines are more informative. (thanks to Brian Downing)
3427 * bug fix: mutually referent alien structures now work correctly.
3428 (reported by Rick Taube)
3429 * bug fix: structures defined by WITH-ALIEN can be referred to
3430 within other definitions in the same WITH-ALIEN.
3431 * bug fix: division operators (MOD, TRUNCATE and the like) with
3432 constant zero divisors and integer dividends no longer generate
3434 * bug fix: provide default methods for INPUT-STREAM-P and
3435 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3436 * bug fix: improve the detection and resolution of MOP metacycles
3437 (where effective method computation depends on the generic function
3438 having its effective method computed). (reported by Bruno Haible)
3439 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3440 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3441 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3442 * bug fix: pathnames with relative directory components can be
3443 represented relative to default pathnames.
3444 * optimization: in taking the GCD of bignums, reduce the two bignums
3445 to approximately the same size (using Euclid's algorithm) before
3446 applying the more sophisticated binary GCD. (thanks to Juho
3448 * optimization: COUNT on bitvectors now operates word-at-a-time.
3449 * optimization: ASH with a positive, but not necessarily constant,
3450 (leftwards) shift, when in a modular context, is compiled to a
3452 * fixed some bugs revealed by Paul Dietz' test suite:
3453 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3454 if the corresponding argument is NIL.
3455 ** FORMAT directives accepting a minpad parameter treat negative
3457 ** literal commas as character parameters to FORMAT directives are
3459 ** literal spaces directly after ~<Newline> directives within a
3460 format-logical-block (~:< ~@:>) do not induce :FILL-style
3461 conditional newlines.
3462 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3463 as specified: it no longer includes conditional newlines).
3464 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3466 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3467 :PER-LINE-PREFIX argument does not evaluate to a string.
3469 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3470 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3471 the manual for details; for now, package locks can be disabled by
3472 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3473 if no major problems are found then it is likely that they will be
3474 compiled in unconditionally.
3475 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3476 unsupported operators on all platforms. To load a shared library
3477 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3478 object file, link it into a shared library outside of SBCL and
3479 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3481 * bug workaround: ROOM T and the GC were not working together
3482 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3483 reporting facility aren't preserved. That reporting has been
3484 disabled, so now until and unless someone figures out how to make it
3485 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3486 * minor incompatible change: as threatened around sbcl-0.8.0, the
3487 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3488 The symbols are also exported from SB-PCL for backwards
3489 compatibility, but more so than before SB-PCL should be treated as
3490 an implementation-internal package.
3491 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3493 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3494 It is known as of this release not to work on the Alpha, however.
3495 * fixed bug #167: errors signalled due to illegal syntax in method
3496 bodies are now more legible.
3497 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3498 designators and can hence be used with TYPEP.
3499 * fixed bug #333: CHECK-TYPE now ensures that the type error
3500 signalled, if any, has the right object to be accessed by
3501 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3502 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3503 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3505 * fixed bug #334: programmatic addition of slots using specialized
3506 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3507 and :ALLOCATION :CLASS slots.
3508 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3509 float exponents. (rereported by Peter Seibel)
3510 * fixed a bug: #\Space (and other whitespace characters) are no
3511 longer considered to be macro characters in standard syntax by
3512 GET-MACRO-CHARACTER.
3513 * fixed bug: initialization of condition class metaobjects no longer
3514 causes an instance of the condition to be created. (reported by
3516 * fixed bug: it is now possible to have slots such that
3517 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3518 description is neither :INSTANCE nor :CLASS.
3519 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3520 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3521 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3522 non-standard SLOT-DEFINITION-ALLOCATION values.
3523 * fixed bugs: various race conditions handling exiting threads.
3524 CL-PPCRE's thread torture test now passes.
3525 * fixed arguably-a-bug: GC time proportional to number of threads in
3526 system even when most of them are idle
3527 * optimization: improved performance of BIT and SBIT on bit-vectors.
3528 * .fasl file incompatibility: The fasl file version number has
3529 been incremented because of changes associated with package locks.
3531 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3532 * minor incompatible change: the system no longer provides
3533 optimization hints (conditions which are TYPEP
3534 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3535 mode; these hints are still emitted when higher SPEED optimization
3537 * new contrib module: a sampling profiler (profiling by statistical
3538 sampling, rather than by instrumenting functions) is available as
3539 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3540 * the behaviour of the standard function ED is now customizeable by
3541 third parties through a hook variable: see ED's documentation
3542 string for information on the protocol.
3543 * the compiler no longer emits efficiency notes for (FUNCALL X)
3544 when the type of X is uncertain under default optimization
3546 * fixed bug 276: mutating a binding of a specialized parameter to a
3547 method to something that is not TYPEP the specializer is now
3549 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3550 exhibit the required behaviour on the x86 platform. (thanks to
3551 Peter van Eynde, Eric Marsden and Bruno Haible)
3552 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3553 even for difficult arguments. (reported by Peter Graves)
3554 * fixed bug 141a: the backquote printer now descends quoted
3556 * fixed another bug in backquote printing: no more destructive
3557 modification of the form's list structure. (reported by Brian
3559 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3560 move between its address being taken and the call to
3561 interrupt_thread, fixing a crashing race condition.
3562 * the SB-POSIX contrib implementation has been adjusted so that it
3563 no longer exhibits ridiculously poor performance when constructing
3564 instances corresponding to C structs.
3566 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3567 * minor incompatible change: the sb-grovel contrib now treats C
3568 structures as alien (in the sense of SB-ALIEN) objects rather than
3569 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3570 has implications for memory management of client code
3571 (sb-grovel-returned objects must now be manually managed) and for
3572 type safety (alien objects now have full types).
3573 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3574 used to control emission of compiler diagnostics, rather than the
3575 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3576 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3577 quality should be considered deprecated.
3578 * install.sh now installs the user manual as well
3579 * (not quite a new documentable feature, but worth considering in
3580 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3581 beginnings of a semantically meaningful condition hierarchy is
3582 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3584 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3585 designator as the defaults argument.
3586 * fixed bug: Displaced arrays whose displaced-to array has become
3587 too small now cause ARRAY-DIMENSION to signal an error, providing
3588 for safer bounds-checking. (reported by Bruno Haible)
3589 * fixed bug: DEFCLASS slot definitions with identical :READER and
3590 :WRITER names now signal a reasonable error. (reported by Thomas
3592 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3594 * fixed bug: Invalid slot specification errors now print correctly.
3595 (thanks to Zach Beane)
3596 * fixed bug 320: Shared to local slot value transfers in class
3597 redefinitions now happen corrently from superclasses as
3598 well. (reported by Bruno Haible)
3599 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3601 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3602 improper lists correctly. (reported by Bruno Haible)
3603 * fixed bug 313: source-transform for <fun-name> was erroneously
3604 applied to a call of a value of a variable with name <fun-name>.
3605 (reported by Antonio Menezes Leitao)
3606 * fixed bug 307: The obsolete instance protocol ensures that
3607 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3608 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3609 remove dead unknown-values globs from the middle of the stack.
3610 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3611 easier to resume long computations after using *BREAK-ON-SIGNALS*
3612 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3613 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3614 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3615 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3616 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3617 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3619 * fixed a (fairly theoretical) bug in string printing: if
3620 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3621 does not have array-element-type equal to the most general string
3623 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3624 function name. (thanks to Nikodemus Siivola)
3625 * fixed bug: compile-time format string checker failed on
3626 non-closed ~{. (reported by Thomas F Burdick)
3627 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3628 don't warn on legal loop code involving more than one aggregate
3629 boolean. (thanks to Nikodemus Siivola)
3630 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3631 in keyword position to MAKE-PACKAGE was not being reported as
3633 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3634 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3636 * fixed bugs 280 and 312: the checking for multiple definitions in a
3637 file is less likely to become confused by uses of inline
3639 * fixed bug: the #S reader macro performs the keyword coercion
3640 specified for slot names. (reported by Kalle Niemitalo)
3641 * fixed bug: lambda lists may contain symbols whose names start with
3642 & but are not lambda-list-keywords; their occurrence triggers a
3644 * fixed bug 321: define-method-combination argument lambda lists do
3645 not cause invalid code to be generated when &optional or &aux
3646 variables have default values. (reported by Bruno Haible)
3647 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3648 have CLOS classes; this appears also to have fixed reported
3649 instability in stack exhaustion detection.
3650 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3651 MUFFLE-WARNING when no associated restart is present is now
3653 * optimization: rearranged the expansion of various defining macros
3654 so that each expands into only one top-level form in a
3655 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3657 * optimization: used a previously little-used slot in symbols to
3658 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3660 * fixed some bugs revealed by Paul Dietz' test suite:
3661 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3663 ** Fixed an optimization bug related to inheritance of initforms
3664 from local to shared slots.
3665 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3666 ** CAST optimizer forgot to flush argument derived type.
3667 ** print/read consistency on floats is now orders of magnitude
3668 more likely. (thanks also to Bruno Haible for a similar report
3670 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3671 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3672 for objects of type REAL. Make it so.
3673 ** SXHASH is specified (infelicitously) to respect similarity,
3674 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3675 it so. (thanks to Markus Ziegler)
3676 ** on the Alpha, the compiler succeeds in compiling functions
3677 returning a known number of arguments greater than 63.
3678 ** fixed handling of invalid NIL arguments in keyword position
3680 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3682 ** provided a readably-printable representation for RANDOM-STATE
3684 ** ensured that pathnames, where they have a namestring, always
3685 print using #P"..." syntax.
3687 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3688 * Support for the forthcoming 2.0 version of the NetBSD kernel
3689 running on x86 hardware has been added. (thanks to Perry
3690 E. Metzger most immediately, and others for their past work)
3691 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3692 current release version; SBCL's OpenBSD support had been broken
3693 since about the time of OpenBSD's switch to ELF binary format.)
3694 * [placeholder for DX summary]
3695 ** user code with &REST lists declared dynamic-extent, under high
3696 speed or space and low safety and debug optimization policy.
3697 * The manual has been converted to Texinfo format and the debugger
3698 chapter from the cmucl manual has been added.
3699 * A facility has been added to extract documentation strings from
3700 sbcl and store them as Texinfo-formatted snippets for inclusion in
3701 the manual (via Texinfo's @include directive)
3702 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3703 the test case to Dave Roberts)
3704 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3705 pointers. (reported by Sean Ross)
3706 * bug fix: PROFILE output is printed nicely even for large numerical
3707 values. (thanks to Zach Beane)
3708 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3709 greater than 32 handle EOF correctly.
3710 * bug fix: on X86 an immediate argument of the IMUL instruction is
3711 correctly printed in disassembly. (thanks to Lutz Euler)
3712 * bug fix: class slots in redefined classes preserve their old
3713 values. (thanks to Bruno Haible and Nikodemus Siivola)
3714 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3715 succeeds. (reported by Marco Baringer)
3716 * fixed some bugs revealed by Paul Dietz' test suite:
3717 ** READ-SEQUENCE now works on ECHO-STREAMs.
3718 ** RATIONALIZE works more according to its specification. (thanks
3721 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3722 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3723 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3724 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3725 should matter to you only if you rebind the printer control
3726 variables and then find you want different bindings in the
3727 debugger than in the ordinary execution of your program.)
3728 * The runtime build system has been tweaked to support building
3729 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3730 assembler and linker. (thanks to Nikodemus Siivola)
3731 * Unbound, undefined, undeclared variables now trigger full
3732 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3733 more often programmer error than deliberate exploitation of undefined
3735 * optimization: the hash algorithm for strings has changed to one
3736 that is less vulnerable to spurious collisions. (thanks to Juho
3738 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3739 needless bounds checking. (thanks to Juho Snellman)
3740 * optimization: implemented multiplication as a modular
3741 (UNSIGNED-BYTE 32) operation on the PPC backend.
3742 * fixed some bugs revealed by Paul Dietz' test suite:
3743 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3745 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3746 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3747 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3749 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3751 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3753 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3754 their output stream on EOF from read.
3755 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3756 have been read to end-of-file.
3757 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3759 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3760 description of determination of which consecutive characters
3762 ** Printing the "Space" character with escaping on now yields "#\\ ",
3763 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3764 ** Reading floating-point numbers with *READ-BASE* set to a number
3765 less than 10 works correctly.
3766 ** Reading floating-point numbers with *READ-BASE* set to a number
3767 more than 10 works correctly.
3768 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3769 the readtable currently in effect.
3771 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3772 * minor incompatible change: parsing of namestrings on a physical
3773 (Unix) host has changed; numbers after the final #\. in a
3774 namestring are no longer interpreted as a version field. This is
3775 intented to be largely invisible to the user, except that the
3776 meaning of the namestring "*.*.*" has changed: it now refers to a
3777 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3778 should usually be replaced by
3779 (make-pathname :name :wild :type :wild :version :wild)
3780 with the added benefit that this is more likely to be portable.
3781 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3782 option to OPEN now signals an error if the file being opened
3783 exists; this may have an impact on existing code.
3784 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3785 signals received, on the PowerPC platforms (both Linux and
3786 Darwin). (thanks to Pierre Mai for pointing out the location of
3788 * several fixes on OS X: The system now builds and runs cleanly on
3789 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3790 (thanks to Brian Mastenbrook)
3791 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3792 second-resolution: integer multiples of 1/3600 between -24 and 24.
3793 (thanks to Vincent Arkesteijn)
3794 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3795 type when called with 1 argument; PEEK-CHAR checked type of
3796 PEEK-TYPE only after having read first character from a
3797 stream. (reported by Peter Graves)
3798 * bug fix: the garbage collector now has much better locality
3799 behaviour, and in particular no longer treats all memory as being
3800 exhausted when many small objects point to each other in a deeply
3802 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3803 recognized as being TYPEP their class.
3804 * bug fix: the PUSHNEW documentation string has been corrected.
3805 (thanks to Vincent Arkesteijn)
3806 * bug fix: defaulting of the value for the last of an atypically
3807 large number of multiple values being bound was not being
3808 performed correctly on the Alpha or PPC platforms
3809 * optimization: implemented multiplication as a modular
3810 (UNSIGNED-BYTE 32) operation on the x86 backend.
3811 * optimization: SEARCH on simple-base-strings can now be open-coded.
3812 (see also contrib/compiler-extras.lisp for inspiration for
3813 teaching the compiler about the Boyer-Moore algorithm).
3814 * value, returned by MAX (and MIN) called with several EQUALP, but
3815 not EQL, arguments now does not depend on compiler settings.
3816 * fixed some bugs revealed by Paul Dietz' test suite:
3817 ** in stack analysis liveness information is propagated from
3818 non-local entry points.
3819 ** pathwise CAST removing failed when the CAST node did not start
3821 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3822 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3824 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3825 host is already defined.
3826 ** RENAME-FILE works on streams instead of signalling an internal
3828 ** PEEK-CHAR uses the current readtable when determining whether
3829 or not a character is whitespace.
3830 ** MERGE-PATHNAMES handles the case when the pathname does not
3831 specify a name while the default-pathname specifies a version.
3832 ** Pathnames now stand a better chance of respecting print/read
3834 ** Attempting to use standardized file system operators with a
3835 pathname with invalid :DIRECTORY components signals a
3837 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3839 ** DIRECTORY on logical pathnames is more correct.
3840 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3841 signal a TYPE-ERROR if their argument is not a stream.
3842 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3843 designator argument does not designate a stream.
3844 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3845 examining the synonym.
3846 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3848 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3849 element-type larger than ([UN]SIGNED-BYTE 32).
3851 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3852 * When built with the :SB-FUTEX feature, threaded builds now take
3853 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3854 for faster/more reliable mutex and condition variable support.
3855 * Incompatible change (but one you probably shouldn't have been using
3856 anyway): the interface and code for arbitrating between multiple
3857 threads in the same user session has been redesigned.
3858 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3859 error when called without an explicit environment argument.
3860 (thanks to Nikodemus Siivola)
3861 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3862 confused about their position. (thanks to Adam Warner and Gerd
3864 * bug fix: Pretty printing backquoted forms with unquotations in the
3865 argument list position of various code constructs such as LAMBDA
3866 now works correctly. (reported by Paul Dietz)
3867 * bug fix: Pretty printing unquotations no longer loses all
3868 stream position information.
3869 * optimization: performance of string output streams is now less
3870 poor for multiple small sequence writes.
3871 * optimization: performance of CSUBTYPEP in the presence of complex
3872 expressions involving CONS and NOT many times has been improved.
3873 (reported by Paul Dietz)
3874 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3876 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3877 streams for the REPL, for the debugger, and so on. (thanks to
3879 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3880 * fixed some bugs revealed by Paul Dietz' test suite:
3881 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3882 is ignored if it is too small, rather than propagating through
3883 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3884 ** extremely complex negations of CONS types were not being
3885 sufficiently canonicalized, leading to inconsistencies in
3887 ** VALUES tranformer lost derived type.
3889 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3890 * fixed a bootstrapping bug: the build process no longer assumes
3891 that the various BOOLE-related constants have the same value in
3892 host and target lisps. (noted by Paul Dietz' test suite on an
3893 SBCL binary built from CLISP)
3894 * The system can now be dynamically linked on the MIPS platform,
3895 which enables dynamic loading of foreign code from Lisp. (thanks
3896 to Ralf Baechle for discussions on the MIPS ABI)
3897 * The system now records debugging information for its own source
3898 files in a filesystem-position-independent manner, relative to
3899 the "SYS" logical host.
3900 * fixed a compiler bug: MV-LET convertion did not check references
3901 to the "max args" entry point. (reported by Brian Downing)
3902 * tweaked disassembly notes to be less confident about proclaiming
3903 some instruction as an LRA. (thanks to Brian Downing)
3904 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3905 now each have their own history, command character, and other
3906 characteristics. (thanks to David Lichteblau)
3907 * fixed some bugs revealed by Paul Dietz' test suite:
3908 ** compiler failure in compiling LOGAND expressions including a
3910 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3911 shift greater than 32.
3912 ** FLUSH-DEST did not mark blocks for type check regeneration.
3913 ** HANDLER-CASE failed to accept declarations in handler clauses
3914 in some circumstances.
3916 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3917 * New code in contrib/sb-introspect (still probably not entirely
3918 stable yet) provides some support for smart Lisp development
3919 environments like SLIME.
3920 * The conditions signalled for errors occurring when loading .fasl
3921 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3922 in a way which should help ASDF recover gracefully.
3923 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3924 stuff has been cleaned up. If you code contrib/ stuff, this might
3925 affect you, and you can look at contrib/README, contrib/STANDARDS,
3926 and/or the 0.8.4.27 diff to check.
3927 * In full calls the compiler now does not generate checks for declared
3928 argument types for all arguments.
3929 * various threading fixes
3930 ** and some experimental patches which didn't make it into
3931 the main tree for this release, but which are shipped in
3932 contrib/experimental-thread.patch as a possible fix for some
3933 failures (deadlock, spinning...) in GC-intensive multithreaded
3935 * fixed PPC build problem (source code incompatibility of different
3936 library versions): added offsetof() hackery which attempts to divine
3937 where glibc maintainers put uc_mcontext today
3938 * fixed bug 282: compiler does not trust type assertions while passing
3939 arguments to a full call.
3940 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3941 &OPTIONAL VALUES type parameter.
3942 * fix bug 214: algorithm for noting rejected templates is now more
3943 similar to that of template seletion. (also reported by rydis on
3945 * fixed bug 141b: printing backquoted information readably and prettily
3946 inserts a space where necessary.
3947 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3948 (CHARACTER 10) are now reported as errors, rather than propagated
3949 as unknown types. (reported by piso on #lisp)
3950 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3951 with values NIL and :ERROR. (thanks to Milan Zamazal)
3952 * fixed bug 191c: CLOS now does proper keyword argument checking as
3953 described in CLHS 7.6.5 and 7.6.5.1.
3954 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3955 longer raise an error; further, using a list as a for-as-arithmetic
3956 counter now raises a meaningful error.
3957 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3958 now understood by sequence creation functions such as MAKE-SEQUENCE
3960 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3961 a STRING-INPUT-STREAM.
3962 * compiler enhancement: SIGNUM is now better able to derive the type
3964 * type declarations inside WITH-SLOTS are checked. (reported by
3966 * fixed some bugs revealed by Paul Dietz' test suite:
3967 ** incorrect optimization of TRUNCATE for a positive first
3968 argument and negative second.
3969 ** compiler failure in let-convertion during flushing dead code.
3970 ** compiler failure while deriving type of TRUNCATE on an
3971 interval, containing 0.
3972 ** ASH of a negative bignum by a negative bignum count now returns
3974 ** intersection of CONS types now canonicalizes properly, fixing
3975 inconsistencies in SUBTYPEP.
3977 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3978 * incompatible change: The --disable-debugger command line
3979 option now clobbers the debugger at a more fundamental
3980 level, by redefining #'INVOKE-DEBUGGER instead of by
3981 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3982 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3983 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3984 enter the debugger REPL and then suffer recursive errors
3985 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3986 while under the new system, BREAK in --disable-debugger mode
3987 terminates the system just as an unhandled error would.
3988 * fixed compiler performance when processing loops with a step >1;
3989 * bug fix: DOCUMENTATION now retrieves generic function
3990 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3991 support has been systematized, and now supports the methods
3992 specified by ANSI, along with a default method and a method for
3993 slot documentation. (reported by Nathan Froyd)
3994 * bug fix: effective methods associated with a generic function are
3995 no longer cached over a change of that generic function's method
3996 combination. (reported by Andreas Fuchs)
3997 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3998 names a non-existent directory. (thanks to Andreas Fuchs)
3999 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4000 the PPC platform, lead to stack corruption; this has been fixed.
4001 (reported by Rainer Joswig)
4002 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4003 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4004 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4005 arithmetic in general, is now much more reliable on the PPC
4007 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4008 platform now returns the right answer.
4009 * optimization: restored some effective method precomputation in
4010 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4011 precomputation is now tunable.
4012 * optimization: compiler-internal data structure use has been
4013 reviewed, and changes have been made that should improve the
4014 performance of the compiler by about 20%.
4015 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4016 simple-base-strings and simple-bit-vectors is improved.
4017 * optimization: the optimization of 32-bit logical and arithmetic
4018 functions introduced in version 0.8.3 on the x86 has been
4019 implemented on the mips, ppc and sparc platforms; an
4020 implementation of the same facility, but for 64-bit arithmetic,
4021 has been added for the alpha.
4022 * microoptimization: the compiler is better able to make use of the
4023 x86 LEA instruction for multiplication by constants.
4024 * bug fix: in some situations compiler did not report usage of
4025 generic arithmetic in (SPEED 3) policy.
4026 * bug 145b fix: compiler used wrong type specifier while converting
4027 MEMBER-types to numeric.
4028 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4030 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4031 index argument now works properly on the Alpha platform.
4032 * bug fix: floating point exception treatment on the Alpha platform
4034 * bug fix: FILE-POSITION works much better on string input and
4035 output streams. (thanks to Nikodemus Siivola)
4036 * bug fix: many threading/garbage collection symptoms sorted.
4037 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4038 might be pseudo-atomic.
4039 * internal change: Stopping for GC is now done with signals not
4040 ptrace. GC is now done in whichever thread wanted it, instead of
4042 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4044 * bug fix: result form in DO is not contained in the implicit
4046 * incompatible change: ICR structure is changed; the value part of
4047 CONTINUATION is now called LVAR; corresponding functions are
4048 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4049 * added type deriver for ISQRT (thanks to Robert E. Brown).
4050 * bug fix: better support for loading from the command line when an
4051 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4053 * fixed some bugs revealed by Paul Dietz' test suite:
4054 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4055 ** ROUND and FROUND now give the right answer when given very
4056 small float arguments.
4057 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4059 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4060 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4061 ** LCM should return a non-negative integer.
4062 ** PARSE-INTEGER returned the index of a terminator instead of the
4063 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4064 ** PARSE-INTEGER returned an incorrect index being applied to a
4066 ** LCM with two arguments of 0 returns 0 rather than signalling
4068 ** unsigned addition of a 32-bit constant with the high bit set no
4069 longer causes an internal compiler error on the x86.
4070 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4071 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4072 with negative last argument.
4073 ** byte specifiers with zero size and position no longer cause
4074 an error during type derivation.
4075 ** bignum multiplication on the Alpha platform now returns the
4077 * porting: The system now builds on SuSE AMD64, although it still
4078 generates a 32-bit binary.
4079 * .fasl file incompatibility: The fasl file version number has
4080 been incremented (because of the changes to internal compiler
4081 data structures referred to above).
4083 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4084 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4085 more accurately, on the Darwin kernel running on PowerPC hardware.
4086 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4087 * Compiler code deletion notes now signal a condition of type
4088 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4089 an associated MUFFLE-WARNING restart.
4090 * The compiler now performs limited argument count validation of
4091 constant format strings in FORMAT, and where appropriate in ERROR,
4092 CERROR and WARN. (thanks to Gerd Moellmann)
4093 * New ASDF-INSTALL contrib can be used for automatic download and
4094 installation of third-party Lisp code from CCLAN or other sites
4096 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4097 which forces another thread to execute a function supplied by the
4099 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4100 now accept and act upon their :ELEMENT-TYPE keyword argument.
4101 (reported by Martin Atzmueller, Edi Weitz)
4102 * bug fix: FILE-POSITION now accepts position designators up to
4103 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4104 is the greater. (thanks to Patrik Nordebo)
4105 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4106 Kalle Olavi Niemitalo)
4107 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4108 printable. (reported by Eric Marsden)
4109 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4110 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4111 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4112 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4113 (thanks to Stig Sandoe)
4114 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4115 UNREAD-CHAR now correctly includes the unread character in the
4116 target sequence. (thanks to Gerd Moellmann)
4117 * bug fix in threaded builds: the system can now be suspended and
4118 resumed by shell job control with minimal disruption.
4119 * bug fixes in times and timezones >2038AD
4120 * better handling of "where is GNU make?" problem in build scripts
4121 (thanks to Nikodemus Siivola)
4122 * new optimization: inside a named function any reference to a
4123 function with the same name is considered to be a self-reference;
4124 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4125 optimization quality.
4126 * new optimization on x86: logical functions and + now have
4127 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4128 used when the result is truncated to 32 bits.
4129 * VALUES declaration is partially enabled.
4130 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4131 * fixed some bugs revealed by Paul Dietz' test suite:
4132 ** The system now obeys the constraint imposed by
4133 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4134 types form a lattice under type intersection.
4135 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4136 ** ASSOC now ignores NIL elements in an alist.
4137 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4138 and (1+ MOST-POSITIVE-FIXNUM) answers.
4139 ** The addition of a method with invalid qualifiers to a generic
4140 function does not cause an error to be signalled immediately;
4141 a warning is signalled, and the error is generated only on
4142 calling the generic function.
4143 * changed .fasl file version number, in part to add type codes for
4144 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4145 obscure ANSI requirements
4147 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4148 * fixed bug 148: failure to inline-expand a local function left
4149 garbage, confusing the compiler.
4150 * fixed bugs 3cd: structure slot readers perform type check if the
4151 slot can have an invalid value (i.e. it is either not initialized
4152 or can be written with a less specific slot writer).
4153 * bug fix: the compiler now traps array references to elements off
4154 the end of an array; previously, the bounds checking in some
4155 circumstances could go off-by-one.
4156 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4158 * type declarations for array element types now obey the description
4159 on the CLHS page "Declaration TYPE", as per discussions on
4160 sbcl-help around 2003-05-08. This means that a declaration
4161 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4162 declaration, all references to BAR will be asserted or assumed
4163 (with THE, so dependent on compiler policy) to involve objects of
4164 type FOO. Note that no such declaration is implied in
4165 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4166 * declared types of functions from the "Conditions"
4167 chapter. (reported by Paul Dietz)
4168 * bug fix: CERROR accepts a function as its first argument.
4169 * bug fix: NTH an NTHCDR accept a bignum as index
4170 arguments. (reported by Adam Warner)
4171 * optimization: character compare routines now optimize comparing
4172 against a constant character. (reported by Gilbert Baumann)
4173 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4174 argument now works properly on the MIPS platform.
4175 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4176 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4177 declared to have a functional type, does not cause an error
4179 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4180 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4181 * fixed bug: if last continuation of a deleted block has a
4182 destination, this destination should be deleted too. (reported by
4184 * fixed a bug in the bootstrap process: the host compiler's values
4185 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4186 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4187 test case from Patrik Nordebo)
4188 * improved the ability of the disassembler on the PPC platform to
4189 provide helpful disassembly notes.
4190 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4191 the class in more cases than previously.
4192 * bug fix: FILE-POSITION now understands :START and :END for
4193 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4194 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4195 8) data. (thanks to David Lichteblau)
4196 * bug fix: it is possible to add a method to a generic function
4197 without lambda list.
4198 * bug fix: reader failed to signal END-OF-FILE inside an
4199 object representation. (reported by Nikodemus Siivola)
4200 * fixed some bugs revealed by Paul Dietz' test suite:
4201 ** LAST and [N]BUTLAST should accept a bignum.
4202 ** condition slot accessors are methods.
4203 ** (VECTOR NIL) is a subtype of STRING.
4205 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4206 * minor incompatible change: some nonsensical specialized lambda
4207 lists (used in DEFMETHOD) which were previously ignored now signal
4209 * minor incompatible change: the system is now aware of the types of
4210 variables in the COMMON-LISP package, and will signal errors for
4211 most violations of these type constraints (where previously they
4212 were silently accepted).
4213 * minor incompatible change: COMPILE-FILE now uses the freedom
4214 afforded (ANSI 3.2.2.3) to use derived function types for
4215 functions defined in the same file. This also permits the system
4216 to warn on static type mismatches and function
4217 redefinition. (Currently it does not work with high DEBUG level.)
4218 * minor incompatible change: VALUES declaration is disabled.
4219 * When issuing notes, the compiler now signals a condition of type
4220 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4221 restart for use in user handlers. It is expected that the
4222 COMPILER-NOTE condition will eventually become a condition
4223 supertype to a hierarchy of note types, which will then be
4224 handleable in a similar fashion. However, at the moment, no such
4225 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4226 but it's an implementation detail, not a classification for the
4228 * Changes in type checking closed the following bugs:
4229 ** type checking of unused values (192b, 194d, 203);
4230 ** template selection based on unsafe type assertions (192c, 236);
4231 ** type checking in branches (194bc).
4232 * A short form of VALUES type specifier has ANSI meaning (it has
4233 increased the number of situations when SBCL cannot perform type
4235 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4236 keywords or constants is permissible.
4237 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4238 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4239 classes. (thanks to Antonio Martinez)
4240 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4241 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4242 argument to a pretty-print stream. Instead, it leaves any such
4243 operations to DESCRIBE-OBJECT methods.
4244 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4246 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4247 lambda lists. (thanks to David Lichteblau)
4248 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4249 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4250 (thanks to Gerd Moellmann)
4251 * fixed bug 246: increased compilation speed of long
4252 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4254 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4256 * DEFCONSTANT now throws a condition of type
4257 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4258 constant to a non-EQL value; CONTINUE and ABORT restarts
4259 respectively change and preserve the value.
4260 * fixed bug 63: The code walker, part of the implementation of CLOS,
4261 is now better at handling symbol macros.
4262 * bug fix: There is no longer an internal implementation type named
4263 CL:LENGTH. (reported by Raymond Toy)
4264 * bug fix: In macro-like defining macros/special operators the
4265 implicit block does not enclose the lambda list.
4266 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4267 enclosed in parentheses) are not suitable as type specifiers, and
4268 their use properly signals an error now.
4269 * bug fix: An argument count mismatch for a type specifier in code
4270 being compiled no longer causes an unhandled error at compile
4271 time, but signals a compile-time warning.
4272 * fixed simple vector readable printing
4273 * bug fix: DESCRIBE takes more care over whether the class
4274 precedence list slot of a class is bound before accessing it.
4275 (reported by Markus Krummenacker)
4276 * bug fix: FORMATTER can successfully compile pretty-printer format
4277 strings which use variants of the ~* directive inside.
4278 * bug fix: SEARCH now applies its TEST predicate to the elements of
4279 the arguments in the correct order. (thanks to Wolfhard Buss)
4280 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4281 in type inference. (thanks to Robert E. Brown)
4282 * bug fix: Reading in symbols with an explicit package name of ""
4283 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4284 * fixed some bugs revealed by Paul Dietz' test suite:
4285 ** NIL is now allowed as a structure slot name.
4286 ** Arbitrary numbers, not just REALs, are allowed in certain
4287 circumstances in LOOP for-as-arithmetic clauses.
4288 ** Multiple class redefinitions before slot access no longer
4289 causes a type error.
4290 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4291 association between the name and a class.
4292 ** Generic functions with non-standard method-combination and over
4293 five methods all of which return constants no longer return NIL
4294 after the first few invocations. (thanks to Gerd Moellmann)
4295 ** CALL-NEXT-METHOD with no arguments now passes the original
4296 values of the arguments, even in the presence of assignment.
4297 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4299 ** DISASSEMBLE works with closures and funcallable instances.
4300 ** ADD-METHOD now returns the generic function, not the new method.
4301 ** FIND-METHOD signals an error if the lengths of the specializers
4302 is incompatible with the generic function, even if the ERRORP
4304 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4305 which its argument is a member.
4306 ** DEFCLASS only redefines the class named by its class-name
4307 argument if that name is the proper name of the class;
4308 otherwise, it creates a new class.
4309 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4310 of the UNBOUND-SLOT condition to the name of the slot.
4311 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4312 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4313 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4314 SLOT-MAKUNBOUND in the specified fashion.
4316 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4317 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4318 cross-compilation host. As a consequence, we can now bootstrap our
4319 way up to SBCL starting with a bare gcc toolchain and human-readable
4320 source code (first the source to CLISP, then the source to SBCL).
4321 * A contributed module containing a partial implementation of the
4322 simple-streams interface has been included. (thanks to Rudi
4324 * A contributed module implementing the RFC1321 Message Digest
4325 Algorithm, known as MD5, has been included.
4326 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4327 no longer has any effect, as the code controlled by this feature
4328 has been deleted. (As far as we know, no-one has ever built using
4329 this feature, and its semantics were confused in any case).
4330 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4331 work on conditions (as required by the ANSI specification),
4332 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4333 expected behaviour on conditions. Users should note, however,
4334 that such behaviour is not required by the ANSI specification,
4335 and so use of this behaviour may render their code unportable.
4336 * fixed some bugs revealed by Paul Dietz' test suite:
4337 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4339 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4340 ** SXHASH on condition objects no longer returns NIL.
4341 ** :ALLOCATION :CLASS slots are better treated; their values are
4342 updated on class redefinition, and initforms inherited from
4343 superclasses are applied.
4344 ** REMOVE-METHOD returns its generic function argument even when
4345 no method was removed.
4346 ** SHARED-INITIALIZE now initializes the values of the requested
4347 slots, including those with :ALLOCATION :CLASS.
4348 ** ALLOCATE-INSTANCE now works on structure classes defined via
4349 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4351 ** SLOT-EXISTS-P now works on conditions, as well as structures
4353 ** MAKE-LOAD-FORM now has the required methods on
4354 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4355 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4356 keyword, and now implements the SLOT-NAMES argument.
4357 ** methods with &OPTIONAL arguments no longer allow too many
4358 arguments to be passed in the call without error.
4359 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4360 option is consistent with the required arguments of the generic
4361 function lambda list.
4362 * bug fix: REQUIRE accepts a string designator. (Thanks to
4364 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4365 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4366 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4367 * bug fix: The compiler now checks for duplicated variables in macro
4369 * bug fix: SETQ on globals returns the correct value.
4370 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4371 not a COMPILER-ERROR (followed by some other strange error on
4372 choosing the CONTINUE restart).
4373 * bug fix: make.sh and friends are now more consistent in the way that
4374 they look for GNU "make".
4376 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4377 * experimental native threads support (on x86 Linux >=2.4 only).
4378 This is not compiled in by default: you need to add :SB-THREAD to
4379 the target features. See the "Beyond ANSI" chapter of the manual
4381 * fix for longstanding nonANSIism: The old distinction between
4382 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4383 The return value from CL:FIND-CLASS is now a CLOS class, and
4384 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4385 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4386 * An interface to the MetaObject Protocol, as described in Kiczales,
4387 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4388 MIT Press, 1991, is available from the SB-MOP package.
4389 * incompatible change: the SB-PCL package should now be considered
4390 a private implementation detail, and no longer a semi-private MOP
4392 * minor incompatible change: due to rearrangement for threads, the
4393 control stack and binding stack are now allocated at arbitrary
4394 addresses instead of being hardcoded per-port. Users affected by
4395 this probably have to be doing advanced things with shared
4396 libraries, and will know who they are.
4397 * minor incompatible change: Previously, all --eval forms used were
4398 processed with READ before any of them were processed with EVAL.
4399 Now each --eval form is processed with both READ and EVAL before
4400 the next --eval form is processed. (Thus package operations like
4401 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4402 work as the user might reasonably expect.)
4403 * minor incompatible change: *STANDARD-INPUT* is now only an
4404 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4406 * minor incompatible change: Y-OR-N-P is now character-oriented,
4407 not line oriented. Also, YES-OR-NO-P now works without errors.
4408 (thanks to Antonio Martinez)
4409 * sb-aclrepl module improvements: an integrated inspector, added
4410 repl features, and a bug fix to :trace command.
4411 * Known functions, which cannot be open coded by the backend, are
4412 considered to be able to check types of their arguments. (fixing
4413 a bug report by Nathan J. Froyd)
4414 * fixed a bug in computing method discriminating functions: It is
4415 now possible to define methods specialized on classes which have
4416 forward-referenced superclasses. (thanks to Gerd Moellmann)
4417 * fixed evaluation order in optional entries (reported by Gilbert
4419 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4420 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4421 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4422 required-by-AMOP NAME argument, as well as CLASS and
4423 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4424 * fixed bug 20: DEFMETHOD can define methods using names that are
4425 not the proper names of classes to designate class specializers.
4426 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4427 Unix file descriptors, instead of blowing up. (thanks to Antonio
4429 * Garbage collection refactoring: user-visible change is that a
4430 call to the GC function during WITHOUT-GCING will not do garbage
4431 collection until the end of the WITHOUT-GCING. If you were doing
4432 this you were probably losing anyway.
4433 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4434 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4435 TYPEP the latter but not the former.
4436 * The compiler issues a full WARNING for calls to undefined functions
4437 with names from the CL package.
4438 * MAP-INTO for a vector destination is open coded. (reported by
4439 Brian Downing on c.l.l)
4440 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4441 documentation string.
4442 * fixed some bugs revealed by Paul Dietz' test suite:
4443 ** COPY-ALIST now signals an error if its argument is a dotted
4445 ** Condition slots are now accessed more correctly in the presence
4446 of multiple initargs for a given slot.
4447 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4448 exclude restarts of the same name associated with a different
4450 ** DEFCLASS of forward-referenced classes with another
4451 forward-referenced class in the superclasses list no longer
4453 ** Condition slots are now initialized once each, not multiple
4454 times. (thanks to Gerd Moellmann)
4455 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4457 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4458 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4459 arguments contain duplicated elements.
4460 ** RESTART-CASE understands local macros.
4461 ** RESTART-CASE associates exactly its own restarts with a condition.
4462 ** ENDP in safe mode checks its argument to be of type LIST.
4463 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4464 in question is unbound.
4465 ** Optimized MAKE-INSTANCE functions no longer cause internal
4466 assertion failures in the presence of duplicate initargs.
4467 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4468 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4469 propagated even in the ctor optimized implementation of
4471 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4473 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4474 * a better implementation of SXHASH on (simple) bit vectors,
4475 measured both in execution speed and in distribution of results
4476 over the positive fixnums, has been installed. Likewise, a better
4477 implementation of EQUAL for simple bit vectors is now available.
4478 * fixed CEILING optimization for a divisor of form 2^k.
4479 * fixed bug 240 (emitting extra style warnings "using the lexical
4480 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4481 by Antonio Martinez)
4482 * fixed SXHASH, giving different results for NIL depending on type
4483 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4484 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4485 variable. (found by Rolf Wester)
4486 * SBCL does not ignore type declarations for special
4487 variables. (reported by rif on c.l.l 2003-03-05)
4488 * some bug fixes in contrib/sb-aclrepl/
4489 * fixed some bugs revealed by Paul Dietz' test suite:
4490 ** a bug in the CONS type specifier, whereby the CAR and CDR
4491 types got intertwined, has been fixed;
4492 ** the type system is now able to reason about the interaction
4493 between INTEGER and RATIO types more completely;
4494 ** APPEND, [N]REVERSE and NRECONC check that those their
4495 arguments, which must be proper lists, are really so;
4496 ** An array specialized to be unable to hold elements has been
4497 implemented, as required -- yes, really -- by ANSI;
4498 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4499 on malformed property lists;
4501 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4502 * incompatible packaging change: in line with Unix convention,
4503 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4504 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4505 * REQUIRE and PROVIDE are now optionally capable of doing something
4506 useful. See the documentation string for REQUIRE.
4507 * infrastructure for a managed SBCL contrib system: contributed
4508 modules in this release include:
4509 ** the ASDF system definition facility;
4510 ** an interface to the BSD Sockets API;
4511 ** an ACL-like convenience interface to the repl;
4512 (thanks to Kevin Rosenberg)
4513 ** an implementation of ROTATE-BYTE, with efficient implementation
4515 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4516 gives a closer approximation to the right answer than previously.
4517 (thanks to Raymond Toy)
4518 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4519 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4520 optional environment arguments, as required by ANSI.
4521 * fixed bugs in other functions taking environment objects, allowing
4522 calls with an explicit NIL environment argument to be compiled
4524 * fixed bug 228: primary return values from
4525 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4526 COMPILE or FUNCTION.
4527 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4528 :TYPE will no longer signal errors on innocuous objects.
4529 * fixed bug 231b: SETQ is better at respecting type declarations in
4530 the lexical environment.
4531 * fixed a bug in DEFCLASS: classes named by symbols with no or
4532 unprintable packages can now be defined.
4533 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4534 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4535 * fixed compiler failure related to checking types of functions.
4536 (reported by Robert E. Brown)
4537 * the compiler is now much more consistent in its error-checking
4538 treatment of bounding index arguments to sequence functions: in
4539 (SAFETY 3) code, errors will be signalled in almost all cases if
4540 invalid sequence bounding indices are passed to functions defined
4541 by ANSI to operate on sequences.
4542 * fixed a bug in the build procedure: documentation of SBCL-specific
4543 packages is now preserved and available in the final Lisp image.
4544 * lifted FDEFINITION lookup out of loops in the implementation of
4545 many list operations. (thanks to Robert E. Brown)
4546 * fixed a bug in the reader: the #n# reader macro now works for
4547 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4548 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4549 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4550 E. Brown and Tony Martinez respectively)
4551 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4552 SLOT-BOUNDP: in particular, it is now able to optimize them much
4553 better, and is now not vulnerable to having packages renamed.
4554 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4555 always called when a slot is not present in an instance. (thanks
4557 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4558 longer signal an error on unreading a character following EOF on
4559 the previous constituent stream. (thanks to Tony Martinez)
4560 * fixed some bugs revealed by Paul Dietz' test suite:
4561 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4562 not just nonnegative fixnums;
4563 ** the logical bit-array operators such as BIT-AND now accept an
4564 explicit NIL for their "opt-arg" argument (to indicate a
4565 freshly-consed result bit-array);
4566 ** ELT now signals an error on an invalid sequence index in safe
4568 ** the type system is now cleverer about negations of numeric
4569 types, and consequently understands the BIGNUM and RATIO types
4571 ** the type system is now cleverer about the interaction between
4572 INTEGER and RATIO types: while bugs still remain, many more
4573 cases are accurately computed;
4574 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4575 if it is in the last clause;
4576 ** CONSTANTLY now correctly returns a side-effect-free function in
4578 ** DECLARE is no longer treated as a special-operator; in
4579 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4580 * incremented fasl file version number due to the change in the
4581 DEFSTRUCT-SLOT-DESCRIPTION structure.
4583 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4584 * minor incompatible change: code processed by the "interpreter" or
4585 EVAL now has a compilation optimization policy of (DEBUG 2)
4586 (changed from (DEBUG 1)) to improve debuggability of interactive
4587 development, and to allow the use of the debug RETURN command in
4589 * an experimental implementation of the RETURN command for the
4590 debugger has been included. (thanks to Frederik Kuivinen)
4591 * fixed bug 62: constraints were not propagated into a loop.
4592 * fixed bug in embedded calls of SORT (reported and investigated by
4594 * fixed some bugs revealed by Paul Dietz' test suite:
4595 ** printing and reading of arrays with some dimensions having
4596 length 0 (thanks to Gerd Moellmann);
4597 ** BOA constructor with &AUX argument without a default value does
4598 not cause a type error;
4599 ** CONSTANTP now returns true for all self-evaluating objects.
4601 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4602 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4603 accessors that are related by inheritance, as specified in the
4604 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4605 Valtteri Vuorikoski)
4606 * The compiler is now able to inline functions that were defined in
4607 a complex lexical environment (e.g. inside a MACROLET).
4608 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4610 * Support for the upcoming FreeBSD-5.0 release has been included.
4611 (thanks to Dag-Erling Smorgrav)
4612 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4613 effect when it is not in a toplevel context.
4614 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4615 stand a better chance of being correct. (thanks to Gerd
4617 * fixed bug in COERCE, which now signals an error on coercing a
4618 rational to a bounded real type which excludes the expected
4620 * The compiler is now able to derive types more accurately from the
4621 COERCE and COMPILE functions.
4622 * fixed bug 223: functional binding is considered to be constant
4623 only for symbols in the CL package.
4624 * fixed bug 231: SETQ did not check the type of a variable being set
4625 (reported by Robert E. Brown)
4626 * A new optimization for MAKE-INSTANCE has been included, fixing
4627 various bugs (including relating to :ALLOCATION :CLASS slots and
4628 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4630 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4631 ** As required by ANSI, LOOP now disallows anonymous collection
4632 clauses such as COLLECT I in conjunction with aggregate boolean
4633 clauses such as THEREIS (= I 1);
4634 ** LOOP now signals an error when any variable is reused in the
4635 same loop (including the potentially useful construct analogous
4636 to WITH A = 1 WITH A = (1+ A);
4637 ** IT is only a special loop symbol within the first clause of a
4638 conditional loop clause;
4639 ** LOOP with a typed iteration variable over a hashtable now
4640 signals a type error iff it should.
4641 * fixed some other bugs revealed by Paul Dietz' test suite:
4642 ** FILE-STREAM now names the class previously known as FD-STREAM;
4643 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4644 argument) no longer signals an error;
4645 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4646 of the slot symbol, rather than using the current package
4647 ((:CONC-NAME "") continues to intern the slot's name in the
4649 * incremented fasl file version number, because of the incompatible
4650 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4651 of the new implementation of DEFINE-COMPILER-MACRO.
4653 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4654 * Support for building SBCL for MIPS platforms running in
4655 little-endian mode has now been checked in, and basic
4656 functionality on said platforms verified.
4657 * minor incompatible change: PCL now records the pathname of a file
4658 in which methods and the like are defined, rather than its
4660 * minor incompatible change: TRUENAME now considers the truename of
4661 a file naming a directory to be the pathname with :DIRECTORY
4662 component indicating that directory.
4663 * minor incompatible change: a NAMED clause in the extended form of
4664 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4665 reason for the previous behaviour is unclear.
4666 * more systematization and improvement of CLOS and MOP conformance
4667 in PCL (thanks to Gerd Moellman and Pierre Mai):
4668 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4670 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4671 primary methods with no specializers;
4672 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4674 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4675 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4676 FORWARD-REFERENCED-CLASSes; error reporting on
4677 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4679 ** SXHASH on CLOS instances now uses a slot internal to the
4680 instance to return different numbers on distinct instances,
4681 while preserving the same return value through invocations of
4683 ** DEFMETHOD signals errors when methods with longer incongruent
4684 lambda lists are added to generic functions;
4685 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4686 CLASS, as specified in AMOP;
4687 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4688 on the order returned by the primary method for classes of
4689 class STANDARD-CLASS;
4690 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4691 * fixed some bugs shown by Paul Dietz' test suite:
4692 ** DOLIST puts its body in TAGBODY;
4693 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4695 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4696 value producing form;
4697 ** if more variables are given to PROGV than values, extra
4698 variables are bound and made to have no value;
4699 ** NSUBSTITUTE on list arguments gets the right answer with
4701 ** ELT signals an error of type TYPE-ERROR when the index argument
4702 is not a valid sequence index;
4703 ** LOOP signals (at macroexpansion time) an error of type
4704 PROGRAM-ERROR when duplicate variable names are found;
4705 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4706 ** FUNCALL of special-operators now cause an error of type
4708 ** PSETQ now works as required in the presence of side-effecting
4709 symbol-macro places;
4710 ** NCONC accepts any object as its last argument;
4711 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4713 ** loop-for-as-package does not require a package to be explicitely
4715 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4717 * fixed bug 166: compiler preserves "there is a way to go"
4718 invariant when deleting code.
4719 * fixed bug 172: macro lambda lists with required arguments after
4720 &REST arguments now cause an error to be signalled. (thanks to
4722 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4723 bug. (thanks to Matthew Danish)
4724 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4726 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4727 arguments are lexically rebound. (thanks to Gerd Moellmann and
4729 * fixed bug 194: error messages are now more informative when there
4730 is no primary method applicable in a call to a generic
4731 function. (thanks to Gerd Moellmann)
4732 * fixed bug in command line argument checking (thanks to Julian
4734 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4735 (thanks to Matthew Danish)
4736 * incremented fasl file version number, because of the
4737 SXHASH-related changes in the layout of CLOS data structures
4739 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4740 * minor incompatible change: The runtime (the Unix executable named
4741 "sbcl") is now much pickier about the .core files it will load.
4742 Essentially it now requires .core files to descend from the same
4743 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4744 as the runtime does. (The intent is to prevent the crashes which
4745 can occur, and which can even be reported as mysterious failures,
4746 when people patch the sources or change the build parameters
4747 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4748 sbcl and .core files.)
4749 * fixed bug: VALUES-LIST is no longer optimized away.
4750 * fixed bug 142: The FFI conversion of C string values to Lisp
4751 string values no longer conses excessively. (thanks to Nathan
4752 Froyd porting Raymond Toy's fix to CMU CL)
4753 * began to systematize and improve MOP conformance in PCL (thanks to
4754 Nathan Froyd, Gerd Moellman and Pierre Mai):
4755 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4757 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4758 ** FINALIZE-INHERITANCE is now called on class finalization;
4759 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4760 argument precedence order.
4761 * fixed bug 202: The compiler no longer fails on functions whose
4762 derived types contradict their declared type.
4763 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4764 so it can be non-toplevel.
4765 * The fasl file version number has changed (because of the new
4766 implementation of DEFMACRO).
4767 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4768 safe code, that any length requirement by their type-specifier
4769 argument is valid. The exceptions to this are described in bug
4771 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4772 functions now check the types of their inputs as required by ANSI.
4773 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4774 introduced symbol is DECLAREd to be SPECIAL.
4775 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4776 * fixed bug: :COUNT argument to sequence functions may be negative
4777 * fixed bug: body of DO-SYMBOLS may contain declarations
4778 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4779 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4780 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4781 symbol macro only once
4782 * fixed printing of call frame when argument list is unavailable
4783 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4784 * compiler no longer signals WARNING on unknown keyword
4787 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4788 * A beta-quality port to the mips architecture running Linux,
4789 based on the old CMUCL backend, has been made. It has been tested
4790 on a big-endian kernel, and works sufficiently well to be able to
4791 rebuild itself; it has not been tested in little-endian mode.
4792 * fixed an inconsistency between gencgc.c and purify.c which made
4793 dumping/loading .core files unreliable
4794 * fixed bug 120a: The compiler now deals correctly with IFs where
4795 the consequent is the same as the alternative, instead of
4796 misderiving the return type. (thanks to Alexey Dejneka)
4797 * fixed bug 113: Logical pathnames are now dumpable (the logical
4798 host is resolved at load-time, throwing an error if it is not
4800 * fixed bug 174: FORMAT's error message is slightly clearer when a
4801 non-printing character is used in a format directive.
4802 * fixed several bugs in compiler checking of type declarations, i.e.
4803 violations of the Python "declarations are assertions" principle
4804 (thanks to Alexey Dejneka)
4805 * fixed several bugs in PCL's error checking (thanks to Gerd
4807 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4809 * fixed bug in compilation of functions as first class values
4810 (thanks to Antonio Martinez-Shotton)
4811 * The compiler's handling TYPE-ERRORs which it can prove will
4812 inevitably happen at runtime has been cleaned up and corrected
4813 in several ways. (thanks to Alexey Dejneka)
4814 * improved argument type checking for various basic arithmetic
4815 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4816 lavished on them in the past that they can be compiled in many
4817 ways in different special cases
4818 * fixed bug 181: compiler checks validity of user supplied type
4820 * cleaned up code flushing in optimization: Function calls which
4821 should signal errors for safety purposes (e.g. which ANSI says
4822 should signal errors when their arguments are of incorrect type)
4823 are no longer optimized away.
4824 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4825 * incremented fasl file version number, because changes in the
4826 implementation of sequence functions like COERCE caused
4827 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4828 in old inline expansions) to become undefined. (Actually these
4829 changes were later undone, so we might very well be binary
4830 compatible with 0.7.7 after all, but leaving the version number
4831 incremented seemed like the simplest and most conservative
4834 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4835 * An alpha-quality port to the parisc architecture running Linux,
4836 based on the old CMUCL backend, has been made. This, even more so
4837 than the other backends, should be considered still a work in
4838 progress; known problems include that the Linux kernel in 64-bit
4839 mode does not propagate the correct sigcontext structure to
4840 userspace, and consequently SBCL on a parisc64 kernel will not
4842 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4843 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4844 suppressed.) Also now that the compiler is looking at declarations
4845 in the environment, it checks optimization declarations as well,
4846 and suppresses inlining when (> DEBUG SPEED).
4847 * More fixes have been made to treatment of floating point exception
4848 treatment and other Unix signals. In particular, floating point
4849 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4850 * The detection and handling of control stack exhaustion (infinite
4851 or very deeply nested recursion) has changed. Stack exhaustion
4852 detection is now done by write-protecting pages at the OS level
4853 and applies at all optimization settings; when found, a
4854 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4855 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4856 be caught using IGNORE-ERRORS.
4857 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4858 correctly when transforming recursive LABELS functions to LETs.
4859 (thanks to Alexey Dejneka)
4860 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4861 that are names of constants or global variables.
4862 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4863 alien routines with docstrings.
4864 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4865 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4867 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4868 (thanks to Eric Marsden)
4869 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4870 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4871 * Bug fix: The SPARC backend can now compile functions involving
4872 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4873 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4874 to a functions expecting a PATHNAME-DESIGNATOR.
4875 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4876 lambda lists. (thanks to Alexey Dejneka)
4877 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4878 functions so that EXPORTing the name of the class doesn't cause
4879 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4880 to Antonio Martinez for reporting this)
4881 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4882 constant-folded without failing an assertion. (thanks to Einar
4883 Floystad Dorum for reporting this)
4884 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4885 types are now dealt with more correctly by the compiler.
4886 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4887 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4888 behaviour analogous to RENAME-FILE. This puts its behaviour more
4889 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4891 * The fasl file version number has changed again. (because of the
4892 bug fix involving the names of PCL MAKE-INSTANCE functions)
4894 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4895 * bug fix: Floating point exceptions are treated much more
4896 consistently on the x86/Linux and PPC/Linux platforms.
4897 * Array initialization with :INITIAL-ELEMENT is now much faster for
4898 cases when the compiler cannot open code the array creation, but
4899 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4900 array accesses have also seen a speed increase.
4901 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4902 specified. (This was at the root of some bad interactions between
4903 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4905 * bug fix: Internal error arguments for undefined functions are now
4906 computed correctly on the PPC/Linux platform.
4907 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4908 Raymond Toy's patch for CMU CL)
4909 * Support for the Solaris 9 operating environment has been included
4910 (thanks to Daniel Merritt)
4911 * A very ugly but hopefully complete draft of the missing FFI chapter
4912 of the manual has been created by reformatting the corresponding
4913 CMU CL manual chapter into (currently very ugly and incoherent)
4914 DocBook and bringing it up to date for SBCL behavior. Thus, the
4915 manual is now essentially complete, at least by my extreme
4916 once-and-only-once standards, whereby it's acceptable to refer to
4917 the doc strings of SB-EXT functions as the primary documentation.
4918 * The fasl file version number has changed again, due to cleanup of
4919 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4920 is no longer a static symbol.)
4922 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4923 * SBCL now builds with OpenMCL (version 0.12) as the
4924 cross-compilation host; also, more progress has been made toward
4925 bootstrapping under CLISP.
4926 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4928 * bug 158 fixed: The compiler can now deal with integer loop
4929 increments different from 1; fixing this turned out also to fix
4931 * bug 169 fixed: no more bogus warnings about using lexical bindings
4932 despite the presence of perfectly good SPECIAL declarations (thanks
4933 to David Lichteblau)
4934 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4935 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4936 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4938 * bug 180 fixed: Method combination specifications no longer ignore
4939 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4940 * bug fix: Structure type predicate functions now check their argument
4941 count as they should.
4942 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4943 correctly. (thanks to Pierre Mai)
4944 * minor incompatible change: The --noprogrammer option is deprecated
4945 in favor of the new --disable-debugger option, which is very similar.
4946 (The major difference is that it takes effect at a slightly different
4947 time at startup, causing handling of errors in --sysinit and
4948 --userinit files will be affected differently.) The
4949 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4950 been added to allow this functionality to be controlled from ordinary
4951 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4952 maintainers, who might want to run non-interactive scripts to
4953 build SBCL cores which will later be used interactively.)
4954 * minor incompatible change: The LOAD function no longer, when given
4955 a wild pathname to load, loads all files matching that pathname.
4956 Instead, an error of type FILE-ERROR is signalled.
4958 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4959 * bug 147 fixed: The compiler preserves its block link/count
4960 invariants more correctly now so that it doesn't crash. (thanks
4962 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4964 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4965 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4966 no-value-for-this-character as NIL (as specified by ANSI).
4967 * HOST-NAMESTRING on physical pathnames now returns a string that is
4968 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4969 (thanks to Christophe Rhodes)
4970 * The Alpha port handles icache flushing more correctly. (thanks to
4972 * More progress has been made toward bootstrapping under CLISP. (thanks
4973 to Christophe Rhodes)
4974 * The fasl file format has changed again, because dynamic loading
4975 on OpenBSD (which has non-ELF object files) motivated some cleanups
4976 in the way that foreign symbols are transformed and passed around.
4977 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4978 is no longer treated as whitespace by the reader, but instead as
4979 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4980 |A
\7fB|, instead of A as it used to.
4982 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4983 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4984 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4985 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4986 this as of 0.7.1.45, but was left out of the previous news section
4987 (thanks to Dan Barlow)
4988 * SBCL now runs on the Solaris operating system on SPARC architectures
4989 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4990 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4991 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4992 * SPARC backend cleanups, allowing builds of cores optimized for V8
4993 and V9 SPARCS, and also emission of code targeted to a particular
4994 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4996 * SBCL is closer to bootstrapping under CLISP, thanks to various
4997 fixes by Christophe Rhodes.
4998 * The fasl file format has changed again, to allow the compiler's
4999 INFO database to support symbol macros.
5000 * The user manual (in doc/) is formatted into HTML more nicely.
5001 (thanks to coreythomas)
5002 * The system is smarter about SUBTYPEP relationships, especially
5003 those involving NOT types (including types such as ATOM which are
5004 represented internally using NOT types). Thus SUBTYPEP is less
5005 likely to return (VALUES NIL NIL) in general, and in particular
5006 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5008 * The fasl file format has changed again, because the internal
5009 representation of types now includes a new slot to support the new
5010 SUBTYPEP-of-NOT-types logic.
5011 * (not a change in the main branch of SBCL, but a related prototype
5012 which can hopefully be merged into the main branch of SBCL in the
5013 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5014 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5015 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5016 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5017 dispatch macro character combinations. (thanks to Alexey Dejneka)
5018 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5019 that superficially look like logical namestrings correctly.
5020 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5022 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5023 default supplied-p) for &optional and &key arguments. (thanks to
5026 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5027 * incompatible change: The compiler is now less aggressive about
5028 tail call optimization, doing it only when (> SPACE DEBUG) or
5029 (> SPEED DEBUG). (This is an incompatible change because there are
5030 programs which relied on the old CMU-CL-style behavior to optimize
5031 away their unbounded recursion which will now die of stack overflow.)
5032 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5033 for non-GENCGC systems has been increased to 20M (since that
5034 seems much closer to the likely performance optimum for modern
5035 systems than the old 4M value was)
5036 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5037 and *DEBUG-PRINT-LEVEL*
5038 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5039 of CMU CL's support for SPARC, and various endianness and other
5040 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5041 * new syntactic sugar for the Unix command line: --load foo.bar is now
5042 an alternate notation for --eval '(load "foo.bar")'.
5044 ** The system now detects stack overflow and handles it gracefully,
5045 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5046 optimization settings. (This is a good thing in general, and
5047 its introduction in this version should be particularly timely
5048 for anyone whose code fails because of suppression of tail
5050 ** The system now hunts for the C variable "environ" in a more
5051 devious way, to avoid segfaults when the C library version differs
5052 between compile time and run time. (thanks to Christophe Rhodes)
5053 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5054 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5055 ** The compiler no longer issues bogus style warnings for undefined
5056 classes in the same source file as the DEFCLASSes which defined
5057 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5059 ** fixes in CONDITION class precedence list for undefined function
5060 errors (thanks to Alexei Dejneka)
5061 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5062 correctly. (thanks to Dan Barlow)
5063 ** portability fixes aiming at bootstrapping under CLISP (thanks
5064 to Dave McDonald and Christophe Rhodes)
5065 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5066 ** fixes in type translation and and type inference (thanks to
5068 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5069 ** various fixes in the new ports (thanks to Dan Barlow)
5070 * several changes related to debugging:
5071 ** suppression of tail recursion, as noted above
5072 ** stack overflow detection, as noted above
5073 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5074 is now the default. (For some time encapsulation has been more
5075 reliable than the breakpoint-based :ENCAPSULATE NIL
5076 implementation, at least on X86 systems; and I just noticed that
5077 encapsulation also seems closer to the spirit of the ANSI
5080 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5082 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5083 up properly again. (There was a packaging bug in 0.7.0 which
5084 left their definitions in SB-SYS::LOAD-FOREIGN and
5085 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5086 vital for most things which interface to C-level interfaces,
5087 like extensions working with sockets or databases or
5088 Perl-compatible regexes or whatever, and the need to fix
5089 this bug is the main reason that 0.7.1 was released so
5091 ** DEFGENERIC is now choosier about the methods it redefines, so that
5092 reLOADing a previously-LOADed file containing DEFGENERICs does
5093 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5094 cycle now works as it should. (thanks to Alexey Dejneka)
5095 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5096 fixed by Christophe Rhodes. (He actually submitted this patch
5097 months ago, and I delayed until after 0.7.0.)
5098 ** Bug 111 (internal compiler confusion about runtime checks on
5099 FUNCTION types) was fixed by Alexey Dejneka.
5100 * Some internal cleanups (getting rid of variables which aren't
5101 needed now that the byte interpreter is gone) caused the fasl
5102 file format number to change again.
5104 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5105 * major incompatible change: The default fasl file extension, i.e. the
5106 default extension for files produced by COMPILE-FILE, has changed
5107 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5109 ** There are many changes in the implementation of the compiler.
5110 SBCL is now essentially a compiler-only implementation of ANSI
5111 Common Lisp. EVAL still "interprets" a few special cases, but
5112 almost all the interesting cases are handled by creating
5113 a LAMBDA expression, calling COMPILE on it, then calling
5114 FUNCALL on the result.
5115 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5116 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5117 Since the code is newer, there might still be some new bugs
5118 (though not as many as before Martin Atzmueller's fixes:-). But
5119 the new code is substantially simpler and clearer, and hopefully
5120 any remaining bugs will be simpler, less fundamental, and more
5121 fixable then the bugs in the old code.
5122 ** The revised compiler is still a little unsteady on its feet.
5124 *** The debugging information it produces (particularly the names
5125 of FUNCTION objects) is sometimes much less useful than what
5126 the old compiler produced.
5127 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5128 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5129 within a MACROLET) has been temporarily weakened.
5130 ** There are new compiler optimizations for various functions:
5131 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5132 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5133 *** the math functions TRUNCATE, FLOOR, and CEILING
5134 *** the function-of-all-trades COERCE
5135 Mostly these should be transparent, but there's one
5136 potentially-annoying problem (bug 117): when the compiler
5137 inline-expands a function and does type analysis on the result,
5138 it can create control paths which have type mismatches, and
5139 when it can't prove that those control paths aren't taken,
5140 it will issue WARNINGs about the type mismatches. This is
5141 a particular problem in practice for the new sequence functions.
5142 It's not clear how this should be fixed, and for now, a
5143 workaround is given in the entry for 117 in the BUGS file.
5144 ** (Because of the interaction between the two previous items --
5145 occasional inlining problems and new inline expansions -- some
5146 of the new sequence function optimizations won't really kick in
5147 completely until debugging information, and then inlining, are
5148 straightened out in some future version.)
5149 * minor incompatible changes:
5150 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5151 DIRECTORY no longer implicitly promotes NIL slots of its
5152 pathname argument to :WILD. In particular, when you ask for the
5153 contents of a directory (which you used to be able to do without
5154 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5155 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5156 ** changes in behavior that ANSI explicitly defines to be
5157 implementation dependent:
5158 *** The new compiler-only implementation still conforms with ANSI,
5159 but acts a little different than before. Besides the obvious
5160 changes in performance tradeoffs (that the cost per form passed
5161 to EVAL has gone up, and the cost per form executed by EVAL
5162 has gone down), the behavior of the system changes a little
5163 because there are no longer any interpreted function objects.
5164 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5165 e.g. doing COMPILE on the output of interactive DEFUN is
5167 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5169 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5170 has changed from (:CL) to NIL.
5171 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5172 e.g. #\Newline and #\Tab, don't have names specified in the
5173 ANSI Common Lisp standard, is now based on their ASCII symbolic
5174 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5175 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5176 are no longer used for output.
5177 ** changes in internal implementation constants:
5178 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5179 4 million. (If your application spends a lot of time GCing and
5180 you have a lot of RAM, you might want to experiment with
5181 increasing it even more.)
5182 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5183 However, almost all old code should still continue to work without
5184 immediate update, as SB-C-CALL is now a (deprecated) nickname
5186 ** Old operator names in the style DEF-FOO are now deprecated in
5187 favor of new corresponding names DEFINE-FOO, for consistency with
5188 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5189 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5190 internal symbols, but a few supported extensions like
5191 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5192 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5193 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5194 etc. as you get deeper into recursive calls to the debugger
5195 command loop, instead of the old "5]", "5]]", "5]]]"
5196 sequence. (I was motivated to do this when squabbles between
5197 ILISP and SBCL left me very deeply nested in the debugger. In the
5198 short term, this change will probably provoke more ILISP/SBCL
5199 squabbles, but hopefully it will be an improvement in the long run.)
5200 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5201 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5202 function, since declaiming return types involving aliens is
5203 (1) annoyingly messy to do by hand and (2) vital to efficient
5204 compilation of code which calls such functions.
5205 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5206 longer reexported by the SB-EXT package. They're solely useful
5207 for alien code, so it seems more logical that you should get
5208 them from the SB-ALIEN package, not in SB-EXT.
5209 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5210 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5211 features. Instead, the code that they used to control is always
5212 built into the system.
5213 * many other bug fixes
5214 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5215 advantage of the new EVAL-WHEN stuff and to clean them up in
5216 general, and they are now more ANSI-compliant in a number of
5217 ways. Martin Atzmueller is responsible for a lot of this.
5218 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5220 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5221 *** correct ERROR type for various file operations
5222 *** some fixes for Lisp streams
5223 *** DEFMETHOD syntax checking
5224 *** changing old weird representation of debug information as
5225 strings (which, among their other deficiencies, don't transform
5226 correctly when you rename packages, and don't change their
5227 print representation when you change things like *PACKAGE*
5228 and *PRINT-LENGTH*) to symbols and lists of symbols
5229 He also made several improvements and fixed several bugs in DESCRIBE.
5230 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5232 *** misbehavior of WRITE-STRING/WRITE-LINE
5233 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5234 and several other LOOP problems as well
5235 *** DIRECTORY when similar filenames are present
5236 *** DEFGENERIC with :METHOD options
5237 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5238 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5239 *** argument ordering in FIND with :TEST option
5240 *** mishandled package designator argument in APROPOS-LIST
5241 *** various problems in the backquote readmacro
5242 *** a bug in APROPOS
5243 *** probably some others that I'm not describing very well here,
5244 since the CVS log documents them by reference to sbcl-devel
5245 messages, and the SourceForge archives aren't working well.:-(
5246 ** Dan Barlow improved the Alpha port (and is making progress on the
5247 PPC port, for those of you who think different).
5248 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5249 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5250 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5251 continues to work on the SPARC port (for those of you in a position
5252 to look down upon our little PC-compatible boxes from a great height).
5253 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5254 and uses that copy, rather than the current dynamic value, when
5255 it's trying to decide whether to truncate output. Thus e.g.
5256 (let ((*print-lines* 50))
5257 (pprint-logical-block (stream nil)
5259 (let ((*print-lines* 8))
5260 (print (aref possiblybigthings i) stream)))))
5261 should now truncate the logical block only at 50 lines, instead of
5262 often truncating it at 8 lines, as it did before.
5263 * The doc/cmucl/ directory, containing old CMU CL documentation
5264 from the time of the fork, is no longer part of the base system.
5265 SourceForge has shut down its anonymous FTP service, and with it
5266 my original plan for distributing the old CMU CL documentation
5267 there. For now, if you need these files you can download an old
5268 SBCL source release and extract them from it.
5269 * The fasl file version number changed again, for dozens of reasons,
5270 some of which are apparent above.
5272 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5273 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5274 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5275 patch, so that DISASSEMBLE output is much nicer.
5276 * The code in the SB-PROFILE package now seems reasonably stable.
5277 I still haven't decided what the final interface should look like
5278 (I'd like PROFILE to interact cleanly with TRACE, since both
5279 facilities use function encapsulation) but if you have a need
5280 for profiling now, you can probably use it successfully with
5281 the current CMU-CL-style interface.
5282 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5283 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5284 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5285 link now returns the dangling link itself, and for similar
5286 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5287 link itself. (In these cases the old code signalled an error and
5288 looped endlessly, respectively.) Thus, DIRECTORY now works even
5289 in the presence of dangling and cyclic symbolic links.
5290 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5291 is now a supported extension again, since the consensus on
5292 sbcl-devel was that it can be useful for ordinary development
5293 work, not just for debugging SBCL itself.
5294 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5295 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5296 that currently-defined functions might be redefined later with
5297 different return types.
5298 * Hash tables can be printed readably, as inspired by CMU CL code
5299 of Eric Marsden and SBCL code of Martin Atzmueller.
5300 * better error handling in CLOS method combination, thanks to
5301 Martin Atzmueller porting Pierre Mai's CMU CL patches
5302 * more overflow fixes for >16Mbyte I/O buffers
5303 * A bug in READ has been fixed, so that now a single Ctrl-D
5304 character suffices to cause end-of-file on character streams.
5305 In particular, now you only need one Ctrl-D at the command
5306 line (not two) to exit SBCL.
5307 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5309 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5310 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5311 does the right thing.
5312 * The implementation of some type tests, especially for CONDITION
5313 types, is now tidier and maybe faster, due to CMU CL code
5314 originally by Douglas Crosher, ported by Martin Atzmueller.
5315 * Some math functions have been fixed, and there are new
5316 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5317 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5318 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5319 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5320 likely to be built into sbcl-0.7.0.)
5321 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5322 CL, ported to SBCL by Martin Atzmueller)
5323 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5324 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5325 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5326 * There's a new slam.sh hack to shorten the edit/compile/debug
5327 cycle for low-level changes to SBCL itself, and a new
5328 :SB-AFTER-XC-CORE target feature to control the generation of
5329 the after-xc.core file needed by slam.sh.
5330 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5331 COMPILE-FILE is no longer supported, so that now every function
5332 gets an entry point, so that block compilation looks a little
5333 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5334 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5335 returns the number of bytes consed since the system started,
5336 rather than the number consed since the first time the function
5337 was called. (The new definition parallels ANSI functions like
5338 CL:GET-INTERNAL-RUN-TIME.)
5339 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5340 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5341 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5342 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5343 * Fasl file version numbers are now independent of the target CPU,
5344 since historically most system changes which required version
5345 number changes have affected all CPUs equally. Similarly,
5346 the byte fasl file version is now equal to the ordinary
5349 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5350 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5351 is no longer recognized. I apologize for this, because it was
5352 listed in SB-EXT as a supported extension, but I found that
5353 its existing behavior was poorly specified, as well as incorrectly
5354 specified, and it looked like too much of a mess to straighten it
5355 out. I have enough on my hands trying to get ANSI stuff to work..
5356 * many patches ported from CMU CL by Martin Atzmueller, with
5357 half a dozen bug fixes in pretty-printing and the debugger, and
5358 half a dozen others elsewhere
5359 * fixed bug 13: Floating point infinities are now supported again.
5360 They might still be a little bit flaky, but thanks to bug reports
5361 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5362 as flaky as they were.
5363 * The --noprogrammer command line option is now supported. (Its
5364 behavior is slightly different in detail from what the old man
5365 page claimed it would do, but it's still appropriate under the
5366 same circumstances that the man page talks about.)
5367 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5368 are now supported, and enabled by default. Thus, the compiler can
5369 handle many floating point and complex operations much less
5370 inefficiently. (Thus e.g. you can implement a complex FFT
5372 * The compiler now detects type mismatches between DECLAIM FTYPE
5373 and DEFUN better, and implements CHECK-TYPE more correctly, and
5374 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5375 thanks to patches from Martin Atzmueller.
5376 * various fixes to make the cross-compiler more portable to
5377 ANSI-conforming-but-different cross-compilation hosts (notably
5378 Lispworks for Windows, following bug reports from Arthur Lemmens)
5379 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5380 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5381 fixed thanks to Pierre Mai's CMU CL patches.
5382 * fixes to keep the system from overflowing internal counters when
5383 it tries to use i/o buffers larger than 16M bytes
5384 * fixed bug 45a: Various internal functions required to support
5385 complex special functions have been merged from CMU CL sources.
5386 (When I was first setting up SBCL, I misunderstood a compile-time
5387 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5388 * improved support for type intersection and union, fixing bug 12
5389 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5390 more obscure bugs as well
5391 * some steps toward byte-compiling non-performance-critical
5392 parts of the system, courtesy of patches from Martin Atzmueller
5393 * Christophe Rhodes has made some debian packages of sbcl at
5394 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5395 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5396 stable, but are nonetheless usable. When he's ready, I'd be happy
5397 to add them to the SourceForge "File Releases" section. (And if
5398 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5399 * new fasl file format version number (because of changes in
5400 internal representation of (OR ..) types to accommodate the new
5401 support for (AND ..) types, among other things)
5403 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5404 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5406 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5408 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5409 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5410 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5411 * DESCRIBE now works on structure objects again.
5412 * Most function call argument type mismatches are now handled as
5413 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5414 know whether the function will be redefined before the call is
5415 executed. (The compiler could flag local calls with full WARNINGs,
5416 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5417 it doesn't keep track of enough information to know whether calls
5418 are local in this sense.)
5419 * Compiler output is now more verbose, with messages truncated
5420 later than before. (There should be some supported way for users
5421 to override the default verbosity, but I haven't decided how to
5422 provide it yet, so this behavior is still controlled by the internal
5423 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5424 src/compiler/ir1util.lisp.)
5425 * Fasl file format version numbers have increased again, because
5426 support for the Gray streams extension changes the layout of the
5427 system's STREAM objects.
5428 * The Gray subclassable streams extension now works, thanks to a
5429 patch from Martin Atzmueller.
5430 * The full LOAD-FOREIGN extension (not just the primitive
5431 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5432 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5433 but like most other programs, it defaults to copying the Unix
5434 environment from the original process instead of starting the
5435 new process in an empty environment.
5436 * Extensions which manipulate the Unix environment now support
5437 an :ENVIRONMENT keyword option which doesn't smash case or
5438 do other bad things. The CMU-CL-style :ENV option is retained
5439 for porting convenience.
5440 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5441 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5443 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5445 * A patch from Martin Atzmueller seems to have solved the SIGINT
5446 problem, and as far as we know, signal-handling now works cleanly.
5447 (If you find any new bugs, please report them!)
5448 * The system no longer defaults Lisp source file names to types
5449 ".l", ".cl", or ".lsp", but only to ".lisp".
5450 * The compiler no longer uses special default file extensions for
5451 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5452 seems to expect a single default extension for all compiled code,
5453 and there's no compelling reason to try to stretch the standard
5454 to allow two different extensions.) Instead, byte-compiled files
5455 default to the same extension as native-compiled files.
5456 * Fasl file format version numbers have increased again, because
5457 a rearrangement of internal implementation packages made some
5458 dumped symbols in old fasl files unreadable in new cores.
5459 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5460 many fewer weird special cases.
5461 * Bug #17 (differing COMPILE-FILE behavior between logical and
5462 physical pathnames) has been fixed, and some related misbehavior too,
5463 thanks to a patch from Martin Atzmueller.
5464 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5465 by Tim Moore, ported to SBCL by Martin Atzmueller.
5466 * Martin Atzmueller fixed several filesystem-related problems,
5467 including bug #36, in part by porting CMU CL patches, which were
5468 written in part by Paul Werkowski.
5469 * More compiler warnings in src/runtime/ are gone, thanks to
5470 more patches from Martin Atzmueller.
5471 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5474 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5476 * DESCRIBE now works on CONDITION objects.
5477 * The debugger now handles errors which arise when trying to print
5478 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5480 * The build system now uses an additional file, customize-target-features.lisp,
5481 to allow local modifications to the target *FEATURES* list. (The point of
5482 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5483 debugging features enabled, without having to worry about propagating it
5484 into everyone's system when I do a "cvs update".) When no
5485 customize-target-features.lisp file exists, the target *FEATURES* list
5486 should be constructed the same way as before.
5487 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5488 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5489 warn about behavior which is undefined under the ANSI spec. Note: This
5490 is specified by ANSI, but it's not very popular with programmers.
5491 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5492 macro in the SBCL sources for an example of a workaround which you
5493 might use to make portable ANSI-standard code which does what you want.
5494 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5495 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5496 when it's used as a non-toplevel form. (This is required in order
5497 to implement the DEFCONSTANT-EQX macro.)
5498 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5499 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5500 funny things, due to bugs in the implementation of EVAL-WHEN
5501 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5502 non-toplevel DEFCONSTANTs are uncommon.)
5503 * The core file version number and fasl file version number have been
5504 incremented, because the old noncompliant DEFCONSTANT behavior involved
5505 calling functions which no longer exist, and because I also took the
5506 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5507 * fixed bug 1 (error handling before read-eval-print loop starts), and
5508 redid debugger restarts and related debugger commands somewhat while
5510 ** The QUIT debugger command is gone, since it did something
5511 rather different than the SB-EXT:QUIT command, and since it never
5512 worked properly outside the main toplevel read/eval/print loop.
5513 Invoking the new TOPLEVEL restart provides the same functionality.
5514 ** The GO debugger command is also gone, since you can just invoke
5515 the CONTINUE restart directly instead.
5516 ** The TOP debugger command is also gone, since it's redundant with the
5517 FRAME 0 command, and since it interfered with abbreviations for the
5519 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5521 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5522 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5523 some porting work by Martin Atzmueller)
5524 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5525 with a boatload of patches which he ported to SBCL. Now that those
5527 ** The system tries to make sure that its low-priority messages
5528 are prefixed by semicolons, to help people who like to use
5529 syntax highlighting in their ILISP buffer. (This patch
5530 was originally due to Raymond Toy.)
5531 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5532 patches originally written by Raymond Toy.
5533 ** The compiler understands coercion between single-value and
5534 multiple-VALUES type expressions better, getting rid of some very
5535 weird behavior, thanks to patches originally by Robert MacLachlan
5536 and Douglas Crosher.
5537 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5538 lambda lists, thanks to a patch originally by Pierre Mai.
5539 ** The system no longer bogusly warns about "abbreviated type
5541 ** The compiler gets less confused by inlining and RETURN-FROM,
5542 thanks to some patches originally by Tim Moore.
5543 ** The system no longer hangs when dumping circular lists to fasl
5544 files, thanks to a patch originally from Douglas Crosher.
5545 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5546 undefined function error.
5547 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5548 in structure slot initforms) for now, documented workaround instead:-|
5549 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5550 * fixed bug 5: added stubs for various Gray stream functions called
5551 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5552 installed, at least appropriate type errors are generated
5553 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5554 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5555 consistently in DEFMETHOD forms.
5556 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5557 it doesn't seem to affect SBCL after all
5558 * The C runtime system now builds with better optimization and many
5559 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5561 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5563 * The system is now under CVS at SourceForge (instead of the
5564 CVS repository on my home machine).
5565 * The new signal handling code has been tweaked to treat register
5566 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5567 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5568 downstream, e.g. in debug-int.lisp, has implicit dependencies
5569 on the unsignedness of integer representation of machine words,
5570 and that caused the system to bomb out with infinite regress
5571 when trying to recover from type errors involving signed values,
5572 e.g. (BUTLAST '(1 2 3) -1).)
5573 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5574 (This was one of the bugs Peter Van Eynde reported back in July.)
5575 * The system now uses code inspired by Colin Walters' O(N)
5576 implementation of MAP (from the cmucl-imp@cons.org mailing
5577 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5578 inline the MAP operation, and there is more than one
5579 sequence argument to the MAP call (so that it can't just
5580 do ETYPECASE once and for all based on the type of the
5581 single sequence argument). (The old non-inline implementation
5582 of the general M-argument sequence-of-length-N case required
5583 O(M*N*N) time when any of the sequence arguments were LISTs.)
5584 * The QUIT :UNIX-CODE keyword argument has been renamed to
5585 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5586 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5588 * Raymond Wiker's patches to port dynamic loading from Linux to
5589 FreeBSD have been added.
5590 * The BUGS file is now more nearly up to date, thanks in large part
5591 to Martin Atzmueller's review of it.
5592 * The debugger now flushes standard output streams before it begins
5593 its output ("debugger invoked" and so forth).
5594 * The core version number and fasl file version number have both
5595 been incremented, because of incompatible changes in the layout
5597 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5598 used to not be called for a saved Lisp image.)
5599 * Martin Atzmueller's version of a patch to fix a compiler crash,
5600 as posted on sbcl-devel 13 September 2000, has been installed.
5601 * Instead of installing Martin Atzmueller's patch for the
5602 compiler transform for SUBSEQ, I deleted the compiler transform,
5603 and transforms for some similar consing operations.
5604 * A bug in signal handling which kept TRACE from working on OpenBSD
5606 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5607 away by constant folding
5608 * The system now defines its address space constants in one place
5609 (in the Lisp sources), and propagates them automatically elsewhere
5610 (through GENESIS and the sbcl.h file). Therefore, patching the
5611 address map is less unnecessarily tedious and error-prone. The
5612 Lisp names of address space constants have also been systematized.
5613 * CVS tags like dollar-Header-dollar have been removed from
5614 the sources, because they have never saved me trouble and
5615 they've been source of trouble working with patches and other
5616 diff-related operations.
5617 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5618 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5620 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5622 * The system has been ported to OpenBSD.
5623 * The system now compiles with a simple "sh make.sh" on the systems
5624 that it's supported on. I.e., now you no longer need to tweak
5625 text in the target-features.lisp-expr and symlinks in src/runtime/
5626 by hand, the make.sh takes care of it for you.
5627 * The system is no longer so grossly inefficient when compiling code
5628 involving vectors implemented as general (not simple) vectors (VECTOR T),
5629 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5630 which dares to use the various sequence functions on non-simple
5631 vectors, takes less of a performance hit.
5632 * There is now a primitive type predicate VECTOR-T-P
5633 to test for the (VECTOR T) type, so that e.g.
5634 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5635 can now be compiled with some semblance of efficiency. (The old code
5636 turned the type declaration into a full call to %TYPEP at runtime!)
5637 * AREF on (VECTOR T) is still not fast, since it's still compiled
5638 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5639 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5640 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5641 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5642 without making full calls to SUBTYPEP at runtime.
5643 (Some analogous efficiency issues for non-simple vectors specialized to
5644 element types other than T, or for non-simple multidimensional arrays,
5645 have not been addressed. They could almost certainly be handled the
5646 same way if anyone is motivated to do so.)
5647 * The changes in array handling break binary compatibility, so
5648 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5649 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5650 instead of (VALUES T T).
5651 * By following the instructions that Dan Barlow posted to sbcl-devel
5652 on 2 July 2000, I was able to enable primitive dynamic object
5653 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5654 functionality is not implemented (since it calls ld to resolve
5655 library references automatically, requiring RUN-PROGRAM for its
5656 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5657 try to resolve library references) is now supported.
5658 * The system now flushes the standard output streams when it terminates,
5659 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5660 them at several other probably-convenient times, e.g. in each pass of
5661 the toplevel read-eval-print loop, and after evaluating a form given
5662 as an "--eval" command-line option. (These changes were motivated by a
5663 discussion of stream flushing issues on cmucl-imp in August 2000.)
5664 * The source transform for TYPEP of array types no longer assumes
5665 that an array whose element type is a not-yet-defined type
5666 is implemented as an array of T, but instead punts, so that the
5667 type will be interpreted at runtime.
5668 * There is now some support for cross-compiling in make.sh: each of
5669 the phases of make.sh has its own script. (This should be transparent
5670 to people doing ordinary, non-cross-compile builds.)
5671 * Since my laptop doesn't have hundreds of megabytes of memory like
5672 my desktop machine, I became more motivated to do some items on
5673 my to-do list in order to reduce the size of the system a little:
5674 ** Arrange for various needed-only-at-cold-init things to be
5675 uninterned after cold init. To support this, those things have
5676 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5677 symbols with such names are now uninterned after cold init).
5678 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5679 fasl files for cold load.
5680 ** Remove the old compiler structure pooling code (which used to
5681 be conditional on the target feature :SB-ALLOC) completely.
5682 ** Redo the representation of some data in cold init to be more compact.
5683 (I also looked into supporting byte compiled code at bootstrap time,
5684 which would probably reduce the size of the system a lot, but that
5685 looked too complicated, so I punted for now.)
5686 * The maximum signal nesting depth in the src/runtime/ support code has
5687 been reduced from 4096 to 256. (I don't know any reason for the very
5688 large old value. If the new smaller value turns out to break something,
5689 I'll probably just bump it back up.)
5690 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5692 * Many, many bugs reported by Peter Van Eynde have been added to
5693 the BUGS list; some have even been fixed.
5694 * While enabling dynamic object file loading, I tried to make the
5695 code easier to understand, renaming various functions and variables
5696 with less ambiguous names, and changing some function calling
5697 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5698 * While trying to figure out how to do the OpenBSD port, I tried to
5699 clean up some of the code in src/runtime/. In particular, I dropped
5700 support for non-POSIX signal handling, added various comments,
5701 tweaked the code to reduce the number of compilation warnings, and
5702 renamed some files to increase consistency.
5703 * To support the new automatic configuration functionality in make.sh,
5704 the source file target-features.lisp-expr has been replaced with the
5705 source file base-target-features.lisp-expr and the machine-generated
5706 file local-target-features.lisp-expr.
5707 * fixed a stupid quoting error in make.sh so that using CMU CL
5708 "lisp -batch" as cross-compilation host works again
5710 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5712 * DESCRIBE no longer tries to call itself recursively to describe
5713 bound/fbound values, so that it no longer fails on symbols which are
5714 bound to themselves (like keywords, T, and NIL).
5715 * DESCRIBE now works on generic functions.
5716 * The printer now prints less-screwed-up representations of closures
5717 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5718 * A private symbol is used instead of the :EMPTY keyword previously
5719 used to mark empty slots in hash tables. Thus
5720 (DEFVAR *HT* (MAKE-HASH-TABLE))
5721 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5722 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5723 now does what ANSI says that it should. (You can still get
5724 similar noncompliant behavior if bang on the hash table
5725 implementation with all the symbols you get back from
5726 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5727 This breaks binary compatibility, since tests for equality to
5728 :EMPTY are wired into things like the macroexpansion of
5729 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5731 * There's now a minimal placeholder implementation for CL:STEP,
5732 as required by ANSI.
5733 * An obscure bug in the interaction of the normal compiler, the byte
5734 compiler, inlining, and structure predicates has been patched
5735 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5736 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5738 * Missing ordinary arguments in a macro call are now detected even
5739 when the macro lambda list contains &KEY or &REST.
5740 * The debugger no longer complains about encountering the top of the
5741 stack when you type "FRAME 0" to explicitly instruct it to go to
5742 the top of the stack. And it now prints the frame you request even
5743 if it's the current frame (instead of saying "You are here.").
5744 * As specified by ANSI, the system now always prints keywords
5745 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5747 * The default initial SIZE of HASH-TABLEs is now smaller.
5748 * Type information from CLOS class dispatch is now propagated
5749 into DEFMETHOD bodies, so that e.g.
5750 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5752 is now basically equivalent to
5753 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5754 (DECLARE (TYPE SINGLE-FLOAT X))
5756 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5757 operation, without having to do run-time type dispatch.
5758 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5759 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5760 * Since I don't seem to be making big file reorganizations very often
5761 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5762 is overflowing my ability to conveniently back them up), I've finally
5763 checked the system into CVS. (The CVS repository is on my home system,
5764 not at SourceForge -- putting it on SourceForge might come later.)
5765 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5766 high-level GC-NOTIFY-FOO functions send their output. (There's
5767 still very little control of where low-level verbose GC functions
5768 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5769 less than it used to -- the GC-NOTIFY-FOO functions are now under
5770 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5771 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5772 in only one place in the source code, and propagates it automatically
5773 everywhere that it's needed. Thus e.g. when I bump the version from
5774 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5775 * The C source files now include boilerplate legalese and documentation
5776 at the head of each file (just as the Lisp source files already did).
5777 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5778 to his page will be replaced with a link to his new CLiki service.
5780 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5782 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5783 * The build process now looks for GNU make under the default name "gmake",
5784 instead of "make" as it used to. If GNU make is not available as "gmake"
5785 on your system, you can change this default behavior by setting the
5786 GNUMAKE environment variable.
5787 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5788 can build without error under CMU CL.
5790 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5792 * There is now a partial SBCL user manual (with some new text and some
5793 text cribbed from the CMU CL manual).
5794 * The beginnings of a profiler have been added (starting with the
5795 CMU CL profiler and simplifying and cleaning up). Eventually the
5796 main interface should be through the TRACE macro, but for now,
5797 it's still accessed through vaguely CMU-CL-style functions and macros
5798 exported from the package SB-PROFILE.
5799 * Some problems left over from porting CMU CL to the new
5800 cross-compilation bootstrap process have been cleaned up:
5801 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5802 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5803 part when getting rid of the compiler *BACKEND* stuff.)
5804 ** The value of *NULL-TYPE* was screwed up, because it was
5805 being initialized before the type system knew the final
5806 definition of the 'NULL type. This screwed up several key
5807 optimizations in the compiler, causing inefficiency in all sorts
5808 of places. (I found it because I wanted to understand why
5809 GET-INTERNAL-RUN-TIME was consing.)
5810 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5811 PROCLAIM FTYPE information. Unfortunately this broke binary
5812 compatibility again, since now the forms output by DEFGENERIC
5813 to refer to functions which didn't exist in 0.6.3.
5814 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5815 can use the new (as of 0.6.3) transform for SOME into MAP into
5817 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5818 values to (INTEGER 0 1000000), so that the time code will no longer
5819 occasionally get blown up by Linux returning 1000000 microseconds
5820 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5821 its output conform to the ANSI spec. (Alas, this makes its output
5822 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5823 * A full call to MAP NIL with a single sequence argument no longer conses.
5824 * fixes to problems pointed out by Martin Atzmueller:
5825 * The manual page no longer talks about multiprocessing as though
5826 it were currently supported.
5827 * The ILISP support patches have been removed from the distribution,
5828 because as of version 5.10.1, ILISP now supports SBCL without us
5829 having to maintain patches.
5830 * added a modified version of Raymond Toy's recent CMU CL patch for
5831 EQUALP comparison of HASH-TABLE
5833 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5835 * The system still can't cross-compile itself with
5836 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5837 entails), but at least it can compile more of itself that way
5838 than it used to be able to, and various buglets which were uncovered
5839 by trying to cross-compile itself that way have now been fixed.
5840 * This release breaks binary compatibility again. This time
5841 at least I've incremented the FASL file format version to 2, so that the
5842 problem can be detected reliably instead of just causing weird errors.
5843 * various new style warnings:
5844 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5845 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5846 ** using the lexical binding of a variable named in the *FOO* style
5847 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5848 as specified by ANSI.
5849 * *RANDOM-STATE* is no longer automatically initialized from
5850 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5851 default behavior of the system is to repeat its behavior every time
5852 it's run. If you'd like to change this behavior, you can always
5853 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5854 old convention there was no comparably easy way to get the system to
5855 repeat its behavior every time it was run.
5856 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5857 FTYPE declarations has been removed, in favor of their ANSI
5858 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5859 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5860 the types of their sequence arguments can be determined at compile time.
5861 This is done through a new open code expansion for MAP which eliminates
5862 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5863 argument types can be determined at compile time.
5864 * The optimizer now transforms COERCE into an identity operation when it
5865 can prove that the coerced object is already of the correct type. (This
5866 can be a win for machine generated code, including the output of other
5867 optimization transforms, such as the MAP transform above.)
5868 * Credit information has been moved from source file headers into CREDITS.
5869 * Source file headers have been made more standard.
5870 * The CASE macro now compiles without complaining even when it has
5873 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5875 * (Note that the way that the PCL macroexpansions were rewritten
5876 to accommodate the change in DEFGENERIC below breaks binary
5877 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5878 not run under sbcl-0.6.2. Once we get out of alpha releases,
5879 i.e. hit release 1.0.0, we'll probably try to maintain binary
5880 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5881 and sbcl-1.4.4. Until then, however, it might be fairly common
5882 for maintenance releases to break binary compatibility.)
5883 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5885 * The reporting of unhandled signals has been changed to print some
5886 explanatory text as well as the report form. (Previously only
5887 the report form was printed.)
5888 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5889 it defines, so that the compiler no longer issues undefined function
5890 warnings for compiled-but-not-yet-loaded generic functions.
5891 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5892 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5893 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5894 section of the ANSI spec are supported.
5895 * The "" nickname for the "KEYWORD" package has been removed.
5896 The reader still handles symbol tokens which begin with a package marker
5897 as keywords, but it doesn't expose its mechanism for doing so in the
5898 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5899 * The system now issues STYLE-WARNINGs for contradictory TYPE
5900 proclamations. (Warnings for contradictory FTYPE proclamations would
5901 be nice too, but those can't be done usefully unless the type system
5902 is made smarter about FUNCTION types.)
5903 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5904 systematized, so that "*target-*.lisp is supposed to exist only on the
5905 target and imply that there's a related file which exists on the
5906 host, and *host-*.lisp is supposed to exist only on the host and imply
5907 that there's a related file which exists on the target. This involves a
5908 lot of renaming. Hopefully the acute confusion caused by the renaming
5909 will be justified by the reduction in chronic confusion..
5910 ** runtime-type.lisp -> early-target-type.lisp
5911 ** target-type.lisp -> late-target-type.lisp
5912 ** early-host-format.lisp -> early-format.lisp
5913 ** late-host-format.lisp -> late-format.lisp
5914 ** host-error.lisp -> misc-error.lisp
5915 ** early-error.lisp -> early-target-error.lisp
5916 ** late-error.lisp -> late-target-error.lisp
5917 ** host-defboot.lisp -> early-defboot.lisp
5918 ** code/misc.lisp -> code/target-misc.lisp
5919 ** code/host-misc.lisp -> code/misc.lisp
5920 ** code/numbers.lisp -> code/target-numbers.lisp
5921 ** code/early-numbers.lisp -> numbers.lisp
5922 ** early-host-type.lisp -> early-type.lisp
5923 ** late-host-type.lisp -> late-type.lisp
5924 ** host-typep.lisp -> typep.lisp
5925 ** load.lisp -> target-load.lisp
5926 ** host-load.lisp -> load.lisp
5927 ** host-disassem.lisp -> disassem.lisp
5928 ** host-insts.lisp -> insts.lisp
5929 ** byte-comp.lisp -> target-byte-comp.lisp
5930 ** host-byte-comp.lisp -> byte-comp.lisp
5931 ** host-signal.lisp -> signal.lisp
5932 ** host-defstruct.lisp -> defstruct.lisp
5933 ** late-target-type.lisp -> deftypes-for-target.lisp
5934 Furthermore, several other previously target-only files foo.lisp (e.g.
5935 hash-table.lisp and random.lisp) have been split into a target-and-host
5936 foo.lisp file and a target-only target-foo.lisp file, with their key type
5937 definitions in the target-and-host part, so that the cross-compiler will
5938 know more about target types.
5939 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5940 gone away. In their place are various *BACKEND-FOO* variables
5941 corresponding to the slots of the old structure.
5942 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5943 into the target SBCL has been fixed.
5944 * The chill.lisp system for loading cold code into a running SBCL
5946 * Support for the CMU CL "scavenger hook" extension has been removed.
5947 (It was undocumented and unused in the CMU CL sources that SBCL was
5948 derived from, and stale in sbcl-0.6.1.)
5949 * Various errors in the cross-compiler type system were detected
5950 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5951 (enabling various consistency checks). Many of them were fixed,
5952 but some hard problems remain, so the compiler is back to
5953 running without *TYPE-SYSTEM-INITIALIZED* for now.
5954 * As part of the cross-compiler type system cleanup, I implemented
5955 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5956 * I have started adding UNCROSS calls throughout the type system
5957 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5958 on cross-compiler input files will be able to go away, and various
5960 * CONSTANTP now returns true for quoted forms (as explicitly required
5963 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5965 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5966 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5967 (MAKE-LIST -1). In the longer term, it ought to become true
5968 that declarations are assertions even at SAFETY 1. For now, it's not
5969 quite true even at SAFETY 3, but it's at least more nearly true..
5970 (Note that this change seems to increases the size of the system by
5971 O(5%) and to decrease the speed of the compiler by 20% or more.)
5972 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5973 for the problem of printing dozens of lines of distracting information
5974 about low-level system machinery as part of the top stack frame
5975 on entry to the debugger when an undefined function was called.
5976 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5977 is not reset to COMMON-LISP-USER.
5978 * Compilation of stuff related to dyncount.lisp has been made conditional
5979 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5980 smaller. The various dyncount-related symbols have been moved into
5981 a new "SB-DYNCOUNT" package.
5982 * tty-inspect.lisp has been renamed to inspect.lisp.
5983 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5984 feature has gone away. (When we eventually port to other flavors of
5985 libc and/or Unix, we'll try to make the differences between flavors
5986 invisible at the user level.)
5987 * Various other *FEATURES* tags, and/or their associated conditionals,
5988 have been removed if obsolescent, or given better documentation, or
5989 sometimes given more-mnemonic names.
5991 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5993 * tidied up "make.sh" script
5994 * tidied up system directory structure
5995 * better "clean.sh" behavior
5996 * added doc/FOR-CMUCL-DEVELOPERS
5997 * many many small tweaks to output format, e.g. removing possibly-confusing
5998 trailing #\. character in DESCRIBE-INSTANCE
5999 * (EQUALP #\A 'A) no longer signals an error.
6000 * new hashing code, including EQUALP hashing
6001 * tidied up Lisp initialization and toplevel
6002 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6003 * command line argument processing
6004 * added POSIX-GETENV function to deal with Unix-ish environment variables
6005 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6006 terminating SBCL on EOF
6007 * non-verbose GC by default
6008 * There is no more "sbcl" shell script; the sbcl file is now the C
6009 runtime executable (just like CMU CL).
6010 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6012 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6013 symbol and package information as Lisp native symbol and package objects
6014 instead of strings naming symbols and strings naming packages. This way,
6015 whenever packages are renamed (as in warm init), debug information is
6016 transformed along with everything else.
6017 * tweaked the optimization policy declarations which control the building
6018 of SBCL itself. Now, among other things, the system no longer saves
6019 source location debugging information. (This helps two problems at once
6020 by reducing SBCL size and by keeping SBCL from trying to look for its
6021 sources -- which may not exist -- when reporting errors.)
6022 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6023 debugging and testing purposes
6024 * cleaned up printing, making the printer call PRINT-OBJECT for
6025 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6026 methods, giving nearly-ANSI behavior
6027 * converted almost all special variables to use *FOO* naming convention
6028 * deleted PARSE-TIME functionality, since it can be done portably
6029 * moved some files out of cold init into warm init
6030 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6032 * regularized formatting of source files
6033 * added an install.sh script
6034 * fixed ridiculous memory usage of cross-compiler by making
6035 compiler/alloc.lisp not try to do pooling unless it can hook
6036 itself into the GC of the cross-compilation host. Now the system
6037 builds nicely on my old laptop.
6038 * added :SB-ALLOC in target-features.lisp-expr
6039 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6040 was not implemented)
6041 * re-did condition handling and note reporting in the compiler. Notes
6042 are no longer handled by signalling conditions. Style warnings
6043 and warnings are handled more correctly and reported in such a way
6044 that it's easy to find one or the other in your output (so that you
6045 can e.g. figure out which of many problems caused COMPILE-FILE to
6047 * changed the severity of several compiler warnings from full WARNING
6048 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6049 compiler note reporting so that it doesn't use the condition system
6050 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6051 COMPILE-FILE command)
6052 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6053 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6054 no longer supported, since their implementation was deeply intertwingled
6055 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6056 * removed bogus "support" for compiler macros named (SETF FOO), and
6057 removed the compiler macro for SETF INFO (but only after making a fool
6058 of myself on the cmucl-imp mailing list by posting a bogus patch for
6059 DEFINE-COMPILER-MACRO..)
6060 * Compiled files containing forms which have side effects on the Lisp
6061 reader (such as DEFPACKAGE forms) are now handled more correctly.
6062 (Compiler queuing of top level lambdas has been suppressed by setting
6063 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6064 * deleted various currently-unused source files, e.g. gengc.lisp. They
6065 may be added back at some point e.g. when porting to other architectures,
6066 but until they are it's distracting to distribute them and to try to
6068 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6069 there were so many of them they're just distractions, and UNCROSS is
6070 known to be able to handle the current sources
6071 * moved PROFILE functionality into TRACE, so that it will be clear
6072 how the wrapping and unwrapping of functions when you profile them
6073 interacts with the wrapping and unwrapping of functions when you
6074 trace them. (Actually, the functionality isn't there yet, but at least
6075 the interface specification is there. Hopefully, the functionality will
6076 arrive with some future maintenance release.)
6077 * removed host-oops.lisp
6078 * changed signature of QUIT function to allow UNIX-CODE argument
6079 * fixed READ-SEQUENCE bug
6080 * tweaked verbose GC output so that it looks more like the progress
6081 output that ANSI specifies for functions like LOAD
6082 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6083 * added <http://sbcl.sourceforge.com> to the banner information printed by