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 2.015.3.
9 * enhancement: backtraces involving frames from the default evaluator
11 * enhancement: RUN-PROGRAM works with user-defined binary input and output
13 * enhancement: more informative compile-time warnings and runtime
14 errors for type-errors detected at compile-time.
15 * enhancement: deadlock detection for mutexes and spinlocks.
16 * enhancement: dynamic-extent for &rest lists stack allocate only their
17 spines, not their argumets. While portable code should not rely on this,
18 particularly in combination with inlining, it should make dynamic-extent
19 easier and safer to use.
20 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
21 uninterruptible, as well as blocking reads from socket streams created
22 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
23 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
24 from the to-char if the from-char is not a dispatch-macro character.
25 * bug fix: references to undefined variables in function calls that are
26 optimized away now signal a runtime error. (lp#722734)
27 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
28 types from a function defined in the same file. (regression from
31 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
32 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
33 years, is now no longer supported.
34 * enhancement: read() and write() have been added to SB-POSIX.
35 * enhancement: types of DEFSTRUCT constructors are proclaimed more
36 accurately, allowing better typechecking of call-sites.
37 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
38 are no longer caught. (reverted to pre 1.0.34 behaviour)
39 * optimization: slightly faster ISQRT. (lp#713343)
40 * bug fix: better support for Solaris /bin/sh in sh-based tests.
41 * bug fix: TRACE behaves better when attempting to trace undefined
42 functions. (lp#740717)
43 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
44 to (FUNCALL #'(LAMBDA ...) ...).
45 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
46 a compile-time error. (lp#720382)
47 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
49 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
50 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
51 optimization. (regression from 1.0.45.18/1.0.46.15)
52 * bug fix: package locks did not protects against compile-time side-effects
54 * bug fix: --dynamic-space-size argument is validated more carefully.
56 * bug fix: memory fault from printing a malformed simple-condition.
58 * bug fix: redefining classes so that slot-definition classes change now
59 engages the obsolete instance protocol. (lp#766271)
60 * bug fix: constant improper lists could break source coverage recording.
62 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
65 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
66 * bug fix: fix mach port rights leaks in mach exception handling code on
67 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
69 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
70 * enhancement: redefinition warnings for macros from different files. (lp#434657)
71 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
72 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
73 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
74 processed using EVAL -- now the appropriate toplevel form is reported instead.
75 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
76 declarations. (lp#726331)
77 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
78 that NIL/NULL is excluded from the type.
79 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
81 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
83 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
84 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
85 stack-allocated values out of their dynamic-extent. (lp#310175)
86 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
87 x86-64 builds caused a type-error.
88 * bug fix: calling COMPILE with something else than a lambda-expression as the
89 second argument reports a more sensible error. (lp#718905)
90 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
91 are detected. (lp#520607)
92 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
94 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
95 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
96 methods. (regression from 1.0.45.18)
97 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
98 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
99 * bug fix: several foreign functions accepting string also accepted NIL and
100 consequently caused a memory fault at 0 now signal a type-error instead.
102 * bug fix: under rare circumstances, constraint propagation could rewrite a
103 variable reference to refer to a variable not in scope, causing an error
104 during physical environment analysis when attempting to close over the
105 variable. (lp#551227)
106 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
108 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
109 * enhancement: largefile support on Solaris.
110 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
111 arguments (lp#710017)
112 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
113 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
115 * optimization: ERROR and CERROR are approximately 5 times faster.
116 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
117 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
118 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
119 up instance creation in those cases.
120 * optimization: arithmetic operations with multiple constant arguments in now
121 have them reduced at compile-time. (lp#676414)
122 * optimization: determining current character position on string-streams for
123 pretty-printing was overly slow.
124 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
125 lifetime analysis to overwrite closed-over variables (lp#681092).
126 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
127 were not handled correctly (lp#713063).
128 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
130 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
131 mistake. (lp#667297).
132 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
133 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
134 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
135 unintern the wrong symbol with the same name. (lp#693796)
136 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
137 making it possible to restore the initial table if it has been messed up.
140 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
141 * enhancement: ~/ and ~user/ are treated specially in pathnames.
142 Refer to documentation for details.
143 * enhancement: ASDF has been updated to version 2.010.
144 * optimization: mutated closed-over variables that are only accessed by
145 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
146 declared to be DYNAMIC-EXTENT) are stored directly in their containing
147 stack frame, rather than allocating a VALUE-CELL (lp#586103).
148 * optimization: UNWIND-PROTECT cleanup functions are now declared
150 * bug fix: backtracing function with &REST arguments now shows the full
151 argument list. (lp#310173)
152 * bug fix: return types for functions with complex lambda-lists are now
153 derived properly (lp#384892)
154 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
155 long string arguments slowed the compiler down to a crawl.
156 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
157 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
158 in the DEFMETHOD body.
159 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
160 messages, being instead replaced with the corresponding function name.
161 * bug fix: don't derive overly complex unions of numeric types for arithmetic
162 operators. (lp#309448)
164 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
165 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
166 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
167 * enhancement: ALLOCATION-INFORMATION also provides the page the object
169 * enhancement: default dynamic-space size can be configured at build-time
170 without touching source, using the --dynamic-space-size argument to make.sh.
171 * enhancement: DESCRIBE recognizes symbols naming optimization policy
172 qualities, and mentions ALWAYS-BOUND declarations.
173 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
175 * enhancement: ASDF has been updated to 2.009.
176 * enhancement: the system detects known type-erros in calls better,
177 signalling a full warning about violated proclaimed FTYPEs and violations
178 of derived FTYPEs within the same file, including self-calls.
179 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
180 * optimization: constant-folding exploits numeric and character types, in
181 addition member types.
182 * optimization: numeric, character and member types that are inhabited by
183 exactly one value are tested with EQL.
184 * optimization: more conditional branches are eliminated during IR1.
185 Branches are simplified before performing if/if-conversion, and simple
186 equivalent branches (that only read the same constant or variable) are
188 * improvements to the Windows port:
189 ** change: canonical unparsing form for pathname namestrings now uses / as
190 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
191 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
192 on Windows. (thanks to Kalyanov Dmitry)
193 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
195 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
196 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
197 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
198 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
200 * bug fix: interrupts arriving during CL:OPEN caused an error.
201 * bug fix: overeager character buffering could cause input to block
202 spuriously when reading from a pipe (lp#643686)
203 * bug fix: more efficient timer expiry should avoid starvation on systems
204 where number of SIGALRMs per second is restricted. (lp#375515)
205 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
206 * bug fix: compile-times no longer scale linearly with the size of
207 quoted lists in source-code. (lp#654289)
208 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
209 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
210 so badly. (lp#654485)
211 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
212 an error for eg. STRUCTURE. (lp#458015)
213 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
214 (lp#613871, thanks to Roman Marynchak)
215 * bug fix: more reliable &REST list type derivation. (lp#655203)
216 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
217 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
218 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
219 also declared NOTINLINE. (lp#655581)
220 * bug fix: the compiler could attempt to emit constant left shifts of
221 greater value than n-word-bits. (lp#309063)
222 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
223 type information for the function being set. (lp#659220)
224 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
225 containing self-calls were recompiled with a new signature, and failed
226 to warn when a self-call using the old signature was left in. (lp#655126)
227 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
228 :DEFAULT when the default external had character size other than 8 bits.
230 * bug fix: derived types of functions in the same file were implicitly
231 trusted, leading to potential heap corruption when those function were
232 defined incompatibly. (lp#657499)
233 * bug fix: existing ASDF source registries are ignored when building
235 * bug fix: short-form DEFSETF checks that the second argument is a symbol
236 (lp#655824, thanks to Roman Marynchak)
237 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
238 package-lock violation was detected. (lp#660752)
239 * bug fix: the system can store different docstrings for a single function
240 under different names. (lp#661631, regression from 1.0.29.24)
241 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
242 properly. (lp#384801)
243 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
244 of specified length could confuse the type derivation in unsafe code.
246 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
247 fork with multiple Lisp threads running is made on every platform,
248 not just Darwin. (lp#451111)
249 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
250 around when core was saved, which could cause undefined behaviour when the
252 * bug fix: Allow UNTRACE of functions that are no longer defined
253 (lp#667657, thanks to Attila Lendvai)
254 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
255 compile-time warning (lp#664373, thanks to Stas Boukarev)
257 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
258 * incompatible change: FD-STREAMS no longer participate in the serve-event
259 event-loop by default. (lp#316072)
260 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
261 affects streams from CL:OPEN.
262 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
263 default, but this is liable to change: applications needing serve-event
264 for socket streams should explicitly request it using :SERVE-EVENTS T
266 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
268 * enhancement: CLOS effective method functions and defclass slot typechecking
269 function now have debug names for use in backtraces and profiles.
270 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
272 * enhancement: symbols are printed using fully qualified names in several
273 error and warning messages which are often associated with package
274 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
275 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
276 thanks to Andrew Golding)
277 * bug fix: reading /proc files on Linux works. (lp#425199)
278 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
280 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
281 breaking code that tried to write the value of a printer control variable.
282 (lp#581564, thanks to Stas Boukarev)
283 * bug fix: WRITE compiler macro did not handle output stream designators
284 correctly. (lp#598374, thanks to Stas Boukarev)
285 * bug fix: better availability of names of foreign functions in backtraces
286 on Linux. (lp#626962, thanks to Stas Boukarev)
287 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
288 lp#627581, thanks to Josh Elsasser and Jim Wise)
289 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
290 thanks to Josh Elsasser)
291 * bug fix: using aliases for builtin classes as defmethod specializers
292 without adding DEFTYPEs for them works. (lp#618387)
293 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
295 * bug fix: legally dynamic-extent lists and vectors used as
296 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
297 * bug fix: inline-expansion creating references to dead lambda-variables
298 (lp#454681, thanks to Alexey Dejneka)
299 * bug fix: better error message for bogus numerical arguments to RANDOM.
300 (lp#598986, thanks to Stas Boukarev)
301 * bug fix: the compiler occasionally inlined references from incompatible
302 environments occurs. (lp#308951)
303 * bug fix: the compiler threw an error when trying to compile a local
304 function (labels or flet) known to take a specialized complex argument.
305 (not in launchpad, reported by sykopomp in #lispgames)
306 * bug fix: package-locks failed to protect against compile-time effects of
307 DEFUN when the symbol previously had a macro definition. (lp#576637)
308 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
309 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
310 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
311 * bug fix: evaluation in debugger REPL works using the global context when
312 in frames that do not have sufficient debug information.
313 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
315 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
317 * bug fix: interrupt taking longer than the requested period caused SLEEP
318 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
320 changes in sbcl-1.0.42 relative to sbcl-1.0.41
322 ** Cross-compilation host is now specified to make.sh using
323 command-line argument --xc-host=<command> instead of a positional
324 argument. (thanks to Daniel Herring)
325 ** Install location can be specified to make.sh using command-line
326 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
327 * optimization: The default implementation of
328 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
329 * enhancement: Explicit memory barrier operations are now available for use
330 by multithreaded code. See documentation for details.
331 * enhancement: Experimental support for threading on Linux/PPC.
332 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
333 * bug fix: EXPT signals an error if first argument is a zero and second
334 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
335 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
336 (lp#576594, thanks to Roman Marynchak)
337 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
338 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
340 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
341 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
342 cached, leading to many fewer expensive calls to
343 COMPUTE-APPLICABLE-METHODS.
344 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
345 CLASS argument, search for and call an appropriate optimized ctor function
347 * bug fix: WRITE always returns the correct value.
349 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
350 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
351 * bug fix: Name conflicts between symbols passed as arguments to a single
352 call to IMPORT no longer add multiple symbols with the same name to the
353 package (detectable via DO-SYMBOLS).
354 * bug fix: support building without the dlshim on darwin x86 and x86-64
356 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
358 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
359 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
361 * bug fix: linkage-table entries on PPC now no longer overflow their
362 space allocation (potentially causing crashes if they are written out
364 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
365 platforms, preventing the GC from seeing stale pointers on the control
366 stack in subsequent GCs (which would, and does, break invariants).
367 * bug fix: 32-bit unicode external formats now work on big-endian systems.
368 * bug fix: Literal characters with code points greater than about 32767
369 now work on PPC UNICODE builds.
370 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
371 high order bits are explicitly cleared out. In some contrived situations,
372 this could lead to wrong results in mixed real/complex float arithmetic.
373 * bug fix: Fix function/macro redefinition warnings when building with
374 clisp. (lp#576787, thanks to Josh Elsasser)
375 * new platform: experimental support for ppc/openbsd (thanks to Josh
377 * bug fix: Floating-point traps now work on ppc/linux.
379 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
380 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
381 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
382 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
383 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
384 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
385 SB-THREAD:GRAB-MUTEX.
386 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
387 contain additional data structures and tools for concurrent programming;
388 at the moment it contains a lock-free queue, and a lock-free mailbox
390 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
391 GET-MUTEX but takes &key rather than &optional parameters. Also added
392 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
394 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
395 SB-THREAD:WAIT-ON-SEMAPHORE.
396 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
398 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
399 conditions to defer the deadline for forever.
400 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
402 * enhancement: errors from NO-APPLICABLE-METHOD and
403 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
404 generic function call.
405 * enhancement: SB-BSD-SOCKET improvements
406 ** sockets and socket streams now have a more informative printed
407 representation based on the corresponding SOCKET-NAME and
409 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
411 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
412 CL:CLOSE when appropriate, and no longer disassociates the stream
413 from the socket if close failed. (lp#543951)
414 * improvements to the instrumenting profiler
415 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
416 ** optimization: counters no longer use locks for the overflow mode.
417 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
418 incurred an off-by-one miscount.
419 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
420 * enhancement: improved DEFMETHOD pretty-printing.
421 * enhancement: perform range reduction when arguments are too large for
422 x87's transcendentals (instead of returning 0). (lp#327192)
423 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
424 some of CL-PPCRE's macros. (lp#570079)
425 * enhancement: our machine code is slightly less hostile to valgrind on
427 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
428 to Robert Swindells and Aleksej Saushev)
429 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
430 * bug fix: a rare case of startup-time page table corruption.
431 * bug fix: a semaphore with multiple waiters and some of them unwinding due
432 to timeouts could be left in an inconsistent state.
433 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
434 * bug fix: misoptimization of multiplication by one in
435 (SB-C::FLOAT-ACCURACY 0) policies.
436 * bug fix: miscounts in SB-PROFILE.
437 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
438 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
439 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
440 up itself" (March 2010) for further details.
441 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
442 against length of the list if the element is found before the specified
443 END is reached. (thanks to Alec Berryman, lp#554385)
444 * bug fix: errors signalled during package graph modification no longer
445 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
446 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
447 :SB-DOC feature. (lp#552564)
448 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
449 * bug fix: more robust runtime executable path detection. (lp#375549)
450 * bug fix: GCD always returns positive values. (lp#413680)
451 * bug fix: Converting division to multiplication by reciprocal handles
453 * bug fix: We were too eager in eliding range reduction tests on x87.
454 The maximal magnitude is 2^63, not 2^64.
455 * bug fix: Transforms for TRUNCATE don't die when the result is completely
457 * bug fix: Maybe restore buildability on Alpha.
458 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
460 * bug fix: RANDOM-STATE can be printed readably again.
461 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
462 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
463 types) could result in type mismatches during compilation.
465 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
466 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
467 stack frame thrown from.
468 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
469 compiler optimization qualities inside dynamic extent of its body.
470 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
471 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
473 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
474 constraint propgation, allowing better compilation eg. when used to
475 access structures with WITH-SLOTS. (lp#520366)
476 * optimization: the compiler is now more aware of the type of the underlying
477 storage vector for multidimensional simple arrays resulting in better code
478 for accessing such arrays.
479 * optimization: passing NIL as the environment argument to TYPEP no longer
480 inhibits optimizing it. (lp#309788)
481 * optimization: more efficient register usage when handling single-float
482 arguments on x86-64. (thanks to Lutz Euler)
483 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
484 pre-allocated temporary vectors. (lp#496249)
485 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
486 in :INITIAL-CONTENTS. (lp#523612)
487 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
488 functions. (lp#524707)
489 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
490 WITH-SLOTS usages during compilation.
491 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
492 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
493 all x86oid platforms with :UD2-BREAKPOINTS target feature.
494 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
495 instruction (tested on x86oid linux with ud2-breakpoints).
496 * bug fix: slam.sh now works on win32.
497 * bug fix: better differences of numeric types. (lp#309124)
498 * bug fix: arrays declared intersection and union types can have their
499 upgraded element type derived. (lp#316078)
500 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
501 threads started during profiling. (lp#472499)
502 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
504 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
505 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
506 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
507 values instead of signaling an error. (lp#309093)
508 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
510 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
511 declarations (lp#497321)
512 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
513 and failed to detect circular lists (lp#452008)
514 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
516 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
517 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
518 due to it, so that handlers can run.
519 * bug fix: reparsing undefined types if they have become defined since
521 * bug fix: missing &REST type in a proclamation for a function with both
522 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
523 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
524 expanded calls (lp#542174)
525 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
526 than just at toplevel form.
528 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
529 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
530 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
531 but work on type specifiers.
532 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
533 to name a type specifier.
534 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
535 specifier is valid where "valid" basically means "would be accepted as
536 second argument of TYPEP".
537 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
538 returns the function's declared, or derived FTYPE.
539 * new feature: SB-POSIX now supports accessing the d_ino member of
540 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
541 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
542 provide for seeding a RANDOM-STATE object with user-provided data or
543 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
544 attempt to initialize the returned state from the operating system's
545 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
546 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
547 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
548 * bug fix: Fix grammar and style issues for the docstrings of
549 printer-related variables and functions. (Thanks to mon_key; launchpad
551 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
553 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
554 in a row even though a handler defered the deadline long into the
556 * bug fix: A deadline handler was run without interrupts enabled for a
557 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
558 in infinitely spinning, non-killable threads.
559 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
560 before reaching the erring stack frame.
561 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
562 real power. (launchpad bug lp#525949)
563 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
564 GENCGC platforms. (launchpad bug lp#529014)
565 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
566 (launchpad bug lp#525916)
567 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
568 (Thanks to Robert Goldman)
570 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
571 * optimization: ROUND with a single single-float or double-float argument
572 is properly inlined when possible.
573 * optimization: Slightly better code is generated for integer<->float
574 conversions and for single-float<->double-float conversions on x86-64.
575 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
576 code for 32-bit and 64-bit rotations on x86-64.
577 * bug fix: The install script changes the ownership of directories as well
578 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
579 launchpad bug lp#508485)
580 * bug fix: TRUNCATE with a single single-float or double-float argument is
581 properly inlined when possible. (launchpad bug lp#489388)
582 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
583 no longer causes a compiler error on x86 and ppc.
584 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
585 always relative to *READTABLE* rather than the passed argument.
587 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
588 * minor incompatible change: threading support is now enabled by default
590 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
592 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
593 are now caught and reported just like errors during macroexpansion.
594 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
595 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
596 * enhancement: ASDF systems can now depends on SB-QUEUE.
597 * fixes and improvements related to Unicode and external formats:
598 ** bug fix: error handling and restart usage in the ucs-2 external format
600 ** there is now an implementation of the ucs-4 external format.
601 ** the utf-16 and utf-32 external formats are supported.
602 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
603 in the environment. setenv() and unsetenv() are also provided. (reported by
604 Fare Rideau; launchpad bug lp#460455)
605 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
606 loading. This ensures sensible errors for .FASL files from other
607 implementations on case-insensitive filesystems. (reported by Willem
608 Broekema; launchpad bug lp#489417)
609 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
610 Willem Broekema; launchpad bug lp#489698).
611 * bug fix: some minor code rearrangements to reenable warning-free building
612 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
613 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
615 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
618 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
619 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
620 * improvement: support O_LARGEFILE access to files larger than 2GB on
621 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
622 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
623 definitions for methods specializing on the passed class itself.
624 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
625 definitions for methods specializing on the passed class itself, or on
627 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
628 about itself during the build (e.g. for M-? in Slime), if this flag is
629 enabled in customize-target-features.lisp. This will increase the core
630 size by about 5-6mb, though, so it's mostly interesting to SBCL
632 * new feature: various GENCGC tuning parameters have been experimentally
633 documented and exported from SB-EXT. See documentation for details.
634 * fixes and improvements related to Unicode and external formats:
635 ** the Unicode character database has been upgraded to the
636 Unicode 5.2 standard, giving names and properties to a number of new
637 characters, and providing a few extra characters with case
639 ** improvement: restarts for providing replacement input/output on coding
640 errors for fd-stream external formats.
641 ** improvement: where :<encoding> is a keyword corresponding to an
642 external format the system supports, it is now possible to specify
643 (:<encoding> :replacement <character>) as an external format which will
644 automatically substitute <character> on encoding or decoding errors for
645 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
647 ** improvement: the file streams underlying the standard streams (such as
648 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
649 which uses the replacement mechanism to handle encoding errors,
650 preventing various infinite error chains and unrecoverable I/O
652 ** minor incompatible change: the utf-8 external format now correctly
653 refuses to encode Lisp characters in the surrogate range (char-codes
654 between #xd800 and #xdfff).
655 ** fix a typo preventing conversion of strings into octet vectors
656 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
658 ** fix a bug in the octet multibyte handling of decoding errors and the
659 USE-VALUE restart. (launchpad bug lp#314939)
660 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
661 restart on fd-stream decoding errors.
662 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
663 error is near the end of file.
664 ** fix a double-error case in unibyte octet conversions, when the first
665 use of USE-VALUE is ignored.
666 ** fix bugs in handling of undefined code points in unibyte encodings.
667 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
668 streams after an UNREAD-CHAR.
669 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
670 object is allocated in a boxed region of dynamic space.
671 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
672 fork with multiple Lisp threads running is made, instead of going
673 ahead with unpredictable consequences. (reported by Leslie Polzer)
674 * bug fix: uses of slot accessors on specialized method parameters within
675 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
676 error while finalizing the class. This fix may cause classes with slot
677 accessors to be finalized later than previously. (reported by Lars Rune
678 Nøstdal; launchpad bug lp#473699)
679 * bug fix: restore buildability on the MIPS platform. (regression from
680 1.0.30.38, reported by Samium Gromoff)
681 * bug fix: inspecting closures is less likely to fail with a type error.
682 * bug fix: no timer starvation when setting the system clock back.
683 (launchpad bug lp#460283)
684 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
685 standard pprint dispatch table as specified by CLHS.
686 * bug fix: give CLISP a hint about a type declaration to enable it to build
687 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
689 * bug fix: correctly dump literal objects in defaulting forms of arglists.
690 (reported by Attila Lendvai; launchpad bug lp#310132)
691 * bug fix: distinguish in type specifiers between arrays that might be
692 complex and arrays that are definitely complex. (launchpad bug lp#309129)
693 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
694 type. (reported by Levente Mészáros; launchpad bug lp#485972)
695 * bug fix: setting the value of a symbol-macro within a method in the
696 presence of type declarations works properly again. (reported by Iban
697 Hatchondo; launchpad bug lp#485019)
699 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
700 * optimization: faster FIND and POSITION on strings of unknown element type
701 in high SPEED policies. (thanks to Karol Swietlicki)
702 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
704 * improvement: better error signalling for bogus parameter specializer names
705 in DEFMETHOD forms (reported by Pluijzer)
706 * bug fix: DELETE-FILE once again works on logical pathnames (regression
708 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
710 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
711 removes previous default initargs (reported by Lars Rune Nøstdal and
713 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
714 lambda-lists. (reported by Peter Seibel)
715 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
716 correctly when starting from an executable core without saved runtime
717 options (reported by Faré Rideau, thanks to Zach Beane)
718 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
719 an optimization note instead. (reported by Martin Cracauer)
720 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
721 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
722 new process group if it doesn't need to share stdin with the sbcl
723 process. (thanks to Leslie Polzer)
724 * bug fix: SATISFIES could be misoptimized to refer to a local function.
725 (reported by Stanislaw Halik)
727 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
728 * improvement: stack allocation is should now be possible in all nested
729 inlining cases: failure to stack allocate when equivalent code is manually
730 open coded is now considered a bug.
731 * improvements related to Unicode:
732 ** the Unicode character database has been upgraded to the
733 Unicode 5.1 standard, giving names and properties to a number of new
734 characters, and providing a few extra characters with case
736 ** the system now recognizes and produces names for Unicode Hangul
738 ** the EBCDIC-US external-format is now supported for octet operations
739 (as well as for stream operations).
740 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
741 be used to output toplevel compile-time effects into a separate .CFASL
743 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
744 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
746 * optimization: TRUNCATE on known single- and double-floats is upto 25%
748 * optimization: division of floating point numbers by constants uses
749 multiplication by reciprocal when an exact reciprocal exists.
750 * optimization: multiplication of single- and double-floats floats by
751 constant two has been optimized.
752 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
753 sufficient type information is available. (thanks to Leslie Polzer)
754 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
755 known structure objects are as efficient as defstruct generated accessors.
756 * optimization: unused vector creation can now be optimized away.
757 * improvement: ASDF systems can now depends on SB-INTROSPECT.
758 * improvement: a STYLE-WARNING is signalled when a generic function
759 clobbers an earlier FTYPE proclamation.
760 * improvement: the compiler is able to track the effective type of
761 generic function across method addition and removal even in the
762 absence of an explicit DEFGENERIC.
763 * improvement: DESCRIBE now reports on symbols naming undefined
764 but assumed or declared function as well.
765 * improvement: recompilation of systems using SB-GROVEL now works
766 (thanks to Leslie Polzer)
767 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
768 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
770 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
771 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
772 well as user defined declaration names.
773 ** VARIABLE-INFORMATION is now aware of alien variables.
774 * improvement: improved address space layout on OpenBSD (thanks to Josh
776 * improvement: pretty-printing of various Lisp forms has been improved
777 (thanks to Tobias Rittweiler)
778 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
779 unused were deleted in safe code. (reported by John Fremlin)
780 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
782 * bug fix: some out-of-line array predicates were missing (reported by
784 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
786 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
787 (thanks to Larry D'Anna)
788 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
789 as well. (reported by Josh Elsasser)
790 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
791 leading to possible attempts to delete the same file twice. See docstring
792 on DELETE-FILE for details. (reported by John Fremlin)
793 * bug fix: DELETE-FILE once again deletes the file named by the pathname
794 designator argument, rather than its truename. (reported by Luis
796 * bug fix: the low-level debugger had 32-bit assumptions and was missing
797 information about some array types. (thanks to Luis Oliveira)
798 * bug fix: moderately complex combinations of inline expansions could
799 be miscompiled if the result was declared to be dynamic extent.
800 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
801 form (+ <variable> <integer>) were miscompiled under certain
803 * bug fix: in some cases no compiler note about failure to stack allocate
804 was emitted, even if the objects were in fact heap allocated.
805 * bug fix: minor violation of "otherwise inaccessible" rule for stack
806 allocation could cause objects users might reasonably expect to
807 be heap allocated to be stack allocated.
808 * bug fix: DESCRIBE signalled an error for generic functions under
809 certain circumstances. (thanks to Leslie Polzer)
810 * bug fix: Fixed spelling of an error message.
812 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
813 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
814 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
815 of SB-THREAD:THREAD-ERROR-THREAD.
816 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
817 * new feature: docstrings for local and anonymous functions are no longer
818 discarded. (thanks to Leslie Polzer)
819 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
820 values in other threads.
821 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
822 about object allocation.
823 * optimization: division of a real float by a complex float is implemented
824 with a specialised code sequence.
825 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
826 keywords is an order of magnitude faster.
827 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
828 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
829 methods, and similarly for non-standard metaclass classes as long as there
830 are no methods additional on MAKE-INSTANCE.
831 * optimization: more efficient type-checks for FIXNUMs when the value
832 is known to be a signed word on x86 and x86-64.
833 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
834 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
836 * optimization: compiler is smarter about delegating argument type checks to
838 * optimization: several character functions are now compiled somewhat more
839 efficiently. (reported by Lynn Quam)
840 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
841 * improvement: less unsafe constant folding in floating point arithmetic,
842 especially for mixed complex/real -float operations.
843 * optimization: constant double and single floats are stored in native
844 unboxed format on x86[-64].
845 * optimization: smarter code for arithmetic operations with constant floats,
846 complex floats, or integers on x86[-64].
847 * optimization: smarter code for conjugate/multiplication of float complexes
848 and abs/negate of floats on x86-64.
849 * optimization: more efficient complex float and real float operations on
851 * improvement: complex float division is slightly more stable.
852 * improvement: DESCRIBE output has been reworked to be easier to read and
853 contains more pertinent information.
854 * improvement: failure to provide requested stack allocation compiler notes
855 provided in all cases (requested stack allocation not happening without a
856 note being issued is now considered a bug.)
857 * bug fix: SB-POSIX exports the documented types and functions
858 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
859 types. (reported by "abhi")
860 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
861 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
862 (thanks to Paul Khuong)
863 * bug fix: looping around HANDLER-CASE could silently consume stack space
864 on each iteration. (reported by "foobar")
865 * bug fix: better error signalling when calls to functions seeking elements
866 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
867 (reported by Tobias Rittweiler)
868 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
869 directory components now works as it used to. (various prolems reported by
870 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
871 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
872 (reported by Elliot Slaughter, thanks to Stas Boukarev)
873 * bug fix: bogus undefined variable warnings from fopcompiled references to
874 global variables. (thanks to Lars Rune Nøstdal)
875 * bug fix: foreign function names should now appear in backtraces on
876 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
877 * bug fix: SETF compiler macro documentation strings are not discarded
879 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
880 (thanks to Alex Plotnick)
881 * bug fix: SLEEP accepts large integer arguments, truncating them to
882 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
883 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
884 * bug fix: compiler notes for expensive slot type checks could be emitted
885 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
887 changes in sbcl-1.0.29 relative to 1.0.28:
888 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
889 https://bugs.launchpad.net/sbcl
890 Bugs can be reported directly there, or by sending email to
891 sbcl-bugs@lists.sourceforge.net
892 (no subscription required.)
893 * minor incompatible change: under weak type checking policy integer
894 types are weakened less aggressively.
895 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
896 allowed to return, which causes SBCL to quit with exit status 0. Previously
897 if the function returned with a small integer return value, that value
898 was accidentally reused as the exit status.
899 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
900 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
901 :HASH-FUNCTION argument. Refer to user manual for details.
902 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
904 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
905 microseconds since the Unix epoch on all platforms.
906 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
907 allows the compiler to safely elide boundedness checks for special
909 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
910 the symbol, prohibits both lexical and dynamic binding. This is mainly an
911 efficiency measure for threaded platforms, but also valueable in
913 * new feature: UNC pathnames are now understood by the system on Windows.
914 * optimization: the compiler uses a specialized version of FILL when the
915 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
917 * optimization: accesses to potentially non-simple arrays where element type
918 is known are 50% faster.
919 * optimization: compiler now generates faster array typechecking code.
920 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
922 * optimization: multidimensional array accesses in the absence of type
923 information regarding array rank are approximately 10% faster due to
924 open coding of ARRAY-RANK.
925 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
926 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
928 * optimization: result of call to VECTOR can now be stack allocated.
929 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
930 as long as the resulting array is one-dimensional and has a known
931 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
932 length of the list matches the known length of the vector does not
933 allocate the list as an intermediate step. Ditto for VECTOR and simple
935 * optimization: MAKE-ARRAY can now stack allocate in the presence of
936 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
937 known element type, and is known to be simple and one dimensional.
938 * improvement: SBCL now emits a compiler note where stack allocation was
939 requested but could not be provided (not in all cases, unfortunately)
940 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
941 * improvement: pretty-printing loop has been implemented properly. (thanks
942 to Tobias Rittweiler)
943 * documentation: CLOS slot typechecing policy has been documented.
944 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
945 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
946 pointer, leading to memory faults. (thanks to Bart Botta)
947 * bug fix: better floating point exception handling on x86/OpenBSD.
948 (thanks to Josh Elsasser)
949 * bug fix: exit status from QUIT when called under --script was lost
950 (reported by Hubert Kauker)
951 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
952 same implementation of FILL to initialize the array, even if a more
953 efficient one was available (reported by Stas Boukarev, thanks to
955 * bug fix: potential miscompilation of array stack allocation on x86 and
956 x86-64. (reported by Time Tossavainen)
957 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
958 result in their subforms being treated as top level forms. (reported by
960 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
961 than a machine register could leave garbage in the high bits of the
962 result register (bug 316325).
963 * bug fix: disable address space randomization Linux/x86-64 as well,
964 not just x86-64. (reported by Ken Olum)
965 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
966 generate incorrect code.
967 * bug fix: #201; type inference for CONS and ARRAY types could derive
968 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
969 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
970 could not be assigned to or bound with PROGV. (reported by Lorenz
972 * bug fix: the value of CL:- in the inspector was the previous expression
973 evaluated rather than the expression being evaluated.
974 * bug fix: constants can no longer be locally declared special.
975 * bug fix: signals delivered to threads started from foreign land (read:
976 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
977 thread by blocking all signals and resignalling.
978 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
979 from :INITFORM, if any.
981 changes in sbcl-1.0.28 relative to 1.0.27:
982 * a number of bugs in cross-compilation have been fixed, with the ultimate
983 result that building under (at least) clisp should be much more reliable.
984 * minor incompatible changes: echo-streams now propagate unread-char to the
985 underlying input stream, and no longer permit unreading more than one
987 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
988 frames, allowing for instance more reliable backtraces.
989 * improvement: the debugger REPL can now reference lexical variables
990 by name directly for code compiled with (DEBUG 3).
991 * improvement: errors from malformed declarations now have better source
992 paths associated with them. (thanks to Tobias Rittweiler)
993 * optimization: faster local calls on x86/x86-64
994 * bug fix: some error messages for out-of-bound array indexes confused the
995 index and the bound. (thanks to Stas Boukarev)
996 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
998 * bug fix: running regressions tests in shells without OSTYPE set now works.
999 (reported by Harald Hanche-Olsen)
1000 * bug fix: more robust static space exhaustion signalling from
1001 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1002 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1003 docstring away instead of storing it under names such as (LAMBDA (X)).
1004 (reported by Leslie Polzer)
1005 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1006 (thanks to Ole Arndt for the patch)
1007 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1008 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1009 potentially-invalid effective methods in its cache.
1010 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1011 instances as well (thanks to Paul Khuong)
1012 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1013 SB-POSIX:WAITPID and their C equivalents.
1014 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1016 changes in sbcl-1.0.27 relative to 1.0.26:
1017 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1018 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1019 * improvement: the system either recovers from stack exhaustion or dies
1020 properly as opposed to leaving the user uncertain of whether the handler
1021 trampled on some random memory next to the stack or having to rely on
1022 --lose-on-corruption (which is still a good idea to use in production
1023 because stack exhaustion can happen in signal handlers which will likely
1025 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1026 1.0.25.37, reported by Harald Hanche-Olsen)
1027 * bug fix: work around signal delivery bug in darwin (regression from
1028 1.0.25.44, reported by Sidney Markowitz)
1029 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1031 changes in sbcl-1.0.26 relative to 1.0.25:
1032 * incompatible change: an interruption (be it a function passed to
1033 INTERRUPT-THREAD or a timer function) runs in an environment where
1034 interrupts can be enabled. The interruption can use
1035 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1036 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1037 potentially running out of stack. Keep in mind that in the absence
1038 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1039 acquiring a lock can enable interrupts.
1040 * incompatible change: GC-OFF and GC-ON are removed, as they were
1041 always unsafe. Use WITHOUT-GCING instead.
1042 * new feature: runtime option --disable-ldb
1043 * new feature: runtime option --lose-on-corruption to die at the
1044 slightest hint of possibly non-recoverable errors: running out of
1045 memory, stack, alien stack, binding stack, encountering a memory
1046 fault, etc. In the absence of --lose-on-corruption a warning is
1048 * enhancement: detect binding stack exhaustion
1049 * enhancement: detect alien stack exhaustion on x86/x86-64
1050 * improvement: generally more stable and reliable interrupt handling
1051 * improvement: there is a per thread interruption queue,
1052 interruptions are executed in order of arrival
1053 * improvement: a repeating timer reschedules itself when the it has
1054 finished, but expiration times are spaced equally. If an
1055 expiration time is in the past it will trigger after a short grace
1056 period that may give a chance to other things to run.
1057 * optimization: slightly faster gc on multithreaded builds
1058 * optimization: faster WITHOUT-GCING
1059 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1060 important locks so that the debugger/handler doesn't produce
1061 recursive errors or deadlock.
1062 * bug fix: real-time signals are not used anymore, so no more
1063 hanging when the system wide real-time signal queue gets full.
1064 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1066 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1067 * bug fix: fix random memory faults related to interrupts on alpha
1068 * bug fix: fix random memory faults related to interrupts on sparc
1069 * bug fix: fix deadlocks related to starting threads
1070 * bug fix: fix deadlines on locks on futex platforms
1071 * bug fix: restore errno in signal handlers
1072 * bug fix: fix deadlocks related to hash tables
1073 * bug fix: fix deadlocks in pcl
1075 changes in sbcl-1.0.25 relative to 1.0.24:
1076 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1077 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1078 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1079 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1080 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1081 better name and does not return values so stale on multiprocessor systems.
1082 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1084 * improvement: unithread builds keep track of MUTEX-VALUE.
1085 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1086 stream anymore making it thread safe to have a concurrent reader and
1087 a writer, for instance, in a pipe.
1088 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1089 arguments, making compiler-macros for SETF-functions able to inspect
1090 their constant arguments.
1091 * improvement: COMPILE-FILE reports times with millisecond accuracy
1092 (thanks to Luis Oliveira)
1093 * optimization: CHAR-CODE type derivation has been improved, making
1094 TYPEP elimination on subtypes of CHARACTER work better. (reported
1095 by Tobias Rittweiler, patch by Paul Khuong)
1096 * bug fix: setting alien structure fields of type struct by value now
1097 computes the right offset for the memory copy.
1098 * bug fix: compilation problem involving inlined calls to aliens with
1099 result type VOID. (reported by Ken Olum)
1100 * bug fix: #235a; sequential inline expasion in different policies no
1101 longer reuses the functional from the previous expansion site.
1102 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1103 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1104 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1105 cause an implied type redefinition. Regression from 1.0.21.29.
1106 * bug fix: sign-extension of small signed return values now works with C
1107 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1108 * improvements to the Windows port:
1109 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1110 Westfold, thanks to Rudi Schlatte)
1112 changes in sbcl-1.0.24 relative to 1.0.23:
1113 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1114 vector of a multidimensional SIMPLE-ARRAY.
1115 * new feature: the system now signals a continuable error if standard
1116 readtable modification is attempted. (thanks to Tobias Rittweiler)
1117 * new feature: DIRECTORY has been extended with a non-standard keyword
1118 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1119 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1120 has been robustified and documented better. (thanks to Robert Goldman)
1121 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1122 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1123 * tradeoff: constant FORMAT control strings are now compiled unless
1124 SPACE > SPEED (previously only when SPEED > SPACE.)
1125 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1127 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1129 * bug fix: lexical type declarations are now correctly reported by
1130 SB-CLTL2. (reported by Larry D'Anna)
1131 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1132 using UTF-8 as external format. (thanks to Luis Oliveira)
1133 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1134 are signalled correctly. (thanks to Stas Boukarev)
1135 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1136 designator. (thanks to Tobias Rittweiler)
1137 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1138 designator, and returns T instead of the function. (thanks to
1140 * bug fix: direct superclasses of STANDARD-CLASS and
1141 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1142 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1143 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1144 when no class with the named slot yet exists no longer causes a
1145 compile-time style-warning.
1146 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1147 in safe code. (reported by Didier Verna)
1148 * bug fix: #430; nested structure constructors can stack allocate.
1149 * bug fix: on some 64-bit platforms dynamic space size was truncated
1150 to #xffff0000 bytes. (reported by Benjamin Lambert)
1151 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1152 REPL unusable. (reported by Daniel Herring)
1153 * bug fix: return values of READ-SEQUENCE did not take :START into
1154 account on file streams, regressions since 1.0.12.22. (reported by
1155 Thomas Russ, patch by Paul Khuong)
1156 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1157 method specializer used to confuse permuation vector optimization.
1158 * bug fix: system inserted bogus implicit type declarations for local
1159 special variables in DEFMETHOD bodies.
1160 * bug fix: #354; duplicated frames in backtraces due to
1161 non-tail-call-optimized XEPs to functions with return type NIL
1163 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1164 initializes structure object slots according to DEFSTRUCT initforms,
1165 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1166 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1167 (reported by Bruno Haible and Stephen Wilson)
1168 * bug fix: #395; fill-pointer output streams used now support
1169 element-type BASE-CHAR as well.
1170 * bug fix: compiler error when attempting to derive return value of
1171 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1173 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1175 * bug fix: Mac OS X binaries should now be portable between Leopard
1178 changes in sbcl-1.0.23 relative to 1.0.22:
1179 * enhancement: when disassembling method functions, disassembly
1180 for the associated fast function is also produced.
1181 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1183 * optimization: printing with *PRINT-PRETTY* true is now more
1184 efficient as long as the object being printed doesn't require
1185 special handling by the pretty printer.
1186 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1187 now interact correctly with type declarations.
1188 * partial bug fix: PCL detects infinite recursion during wrapper
1189 validation. (thanks to Attila Lendvai)
1190 * bug fix: #426; nested function calls are inlined properly.
1191 Previously if FOO was an inline function, in calls of the form
1192 (FOO (FOO ...)) the outer call was not inlined.
1193 * bug fix: long long arguments passed in registers to alien
1194 functions on PowerPC Linux and NetBSD are now handled correctly
1195 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1197 changes in sbcl-1.0.22 relative to 1.0.21:
1198 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1199 for the shared object in the current directory, but passes the native
1200 namestring of the designated pathname to the operation system's shared
1201 object loading function as-it.
1202 * minor incompatible change: --disable-debugger toplevel option now takes
1203 effect before processing of initialization files and --eval or --load
1205 * new feature: new commandline argument: --script, which supports
1206 shebang lines. See documentation for details. (based on work by
1208 * new feature: SAVE-LISP-AND-DIE can save current values of
1209 --dynamic-space-size and --control-stack-size in the executable core,
1210 causing it to skip normal runtime option processing. See documentation
1211 for details. (thanks to Zach Beane)
1212 * enhancement: inoccous calls to EVAL or generic functions dispatching
1213 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1214 * enhancement: the system no longer resignals errors from --load and
1215 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1216 associated with the original error to be lost. (thanks to Ariel
1218 * enhancement: :DONT-SAVE keyword argument has been added to
1219 LOAD-SHARED-OBJECT for controlling interaction with
1220 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1221 the effects of an earlier LOAD-SHARED-OBJECT call.
1222 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1223 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1224 provided. (reported by Cedric St-Jean)
1225 * bug fix: circularity handling in the reader did not treat raw
1226 structure slots correctly. (reported by Cedric St-Jean)
1227 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1228 file descriptors when there were none.
1229 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1230 was broken. (reporteed by Willem Broekema)
1231 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1232 pathnames without a directory.
1233 * bug fix: COMPILE-FILE did not warn about undefined variable
1234 references at toplevel, and LOAD of the resulting fasl did
1235 not signal an error.
1236 * bug fix: functions with non-required arguments used to end up with
1237 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1238 * bug fix: redefining a function with non-required arguments didn't
1239 update the system's knowledge about its call signature properly.
1240 * bug fix: fixed #431; incompatible alien record type redefinitions
1241 are detected and handled. (reported by Neil Haven)
1242 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1243 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1245 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1246 after alien stack frames.
1247 * bug fix: strings passed to mk{s,d}temp lacked null termination
1249 changes in sbcl-1.0.21 relative to 1.0.20:
1250 * new feature: the compiler is able to track the effective type of a
1251 generic function across method addition and removal.
1252 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1253 appropriately typed structure slots without locking.
1254 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1255 information like those gathered by TIME using a programming-friendly
1257 * new feature: TIME reports time taken even if the form performs a
1258 non-local transfer of control.
1259 * enhancement: reduced conservativism on GENCGC platforms: on
1260 average 45% less pages pinned (measured from SBCL self build).
1261 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1262 mutate constant symbols or violate declaimed type of the symbol.
1263 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1264 sleeping on the semaphore in heavily contested semaphores.
1265 * bug fix: semaphores and condition variables were not interrupt
1267 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1268 owned by other threads anymore.
1269 * bug fix: FIND on lists called KEY outside the specified
1270 subsequence. (reported by budden)
1271 * bug fix: LOG doesn't use single-float intermediate results when
1272 given mixed integer and double-float arguments, leading to better
1273 precision. (reported by Bob Felts)
1274 * bug fix: LOG with base zero returned values of inconsistent type.
1276 changes in sbcl-1.0.20 relative to 1.0.19:
1277 * minor incompatible change: OPTIMIZE qualities
1278 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1279 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1280 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1281 * documentation: some slot access efficiency guidelines have been
1282 added to the user manual.
1283 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1284 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1285 as ASSOC and MEMEBER.
1286 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1287 to more efficient EQ-comparison versions more often.
1288 * optimization: enhanced derivation of DOLIST iteration variable type
1290 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1292 * optimization: runtime lookup of function definitions can be
1293 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1294 * optimization: compiler is able to derive the return type of
1295 (AREF (THE STRING X) Y) as being CHARACTER.
1296 * optimization: CLRHASH on empty hash-tables no longer does pointless
1297 work. (thanks to Alec Berryman)
1298 * optimization: REPLACE deftransforms don't punt when :START1 or
1300 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1301 no longer emits a code deletion note. (reported by Andrew
1303 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1304 functions with an odd number of &OPTIONAL arguments, a &REST
1305 argument, and one or more &KEY arguments at the call site.
1306 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1307 arguments appeared at call sites as well.
1308 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1309 READ-LINE &co can no longer read from them afterwards. (reported
1311 * bug fix: fixed #427: unused local aliens no longer cause compiler
1312 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1314 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1315 alien-stack leakage. (reported by Andy Hefner)
1316 * bug fix: PROGV signals an error when an attempt to violate declared
1317 type of a variable or bind a constant is made.
1318 * bug fix: SET signals an error when an attempt to violate declared
1319 type of a variable is made.
1320 * bug fix: restart computation during the execution of a restart
1321 test function no longer causes infinite recursion. (reported by
1323 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1324 signals an error. (thanks to Pierre Mai)
1325 * bug fix: EXPORT left symbol unexported in conflict situations.
1326 (thanks to Michael Weber)
1327 * bug fix: correctly handle name conflicts involving CL:NIL.
1328 (thanks to Michael Weber)
1329 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1330 conflicts arising from USEing package with conflicting symbols
1331 correctly. (thanks to Michael Weber)
1333 changes in sbcl-1.0.19 relative to 1.0.18:
1334 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1335 warnings that go otherwise unhandled will be muffled if they are
1336 of the type that's the value of this variable.
1337 * optimization: stack allocation is slightly more efficient on x86
1339 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1340 where a raw slot always is initialized using the initform whose
1341 type is not know sufficiently well a compile-time are now compiled
1342 correctly. (reported by John Morrison)
1343 * bug fix: compiler no longer makes erronous assumptions in the
1344 presence of non-foldable SATISFIES types.
1345 * bug fix: stack analysis missed cleanups of dynamic-extent
1346 arguments in non-let-converted calls to local functions.
1347 * improvements to the Windows port:
1348 ** adjusted address spaces for building on both Win32 and
1349 Win64. (thanks for John Connors)
1350 * fixed some bugs revealed by Paul Dietz' test suite:
1351 ** interval arithmetic during type derivation used inexact integer
1352 to single-float coercions.
1353 ** arithmetic operations involving large integers and single
1354 floats give the same results in compiled and interpreted code.
1355 ** deriving the result type of COERCE no longer signals an error
1356 if the derived type of the second argument is a MEMBER type
1357 containing invalid type specifiers.
1358 ** ADJOIN with constant NIL as second argument works correctly.
1359 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1361 changes in sbcl-1.0.18 relative to 1.0.17:
1362 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1363 profiles only the current thread.
1364 * minor incompatible change: changes to SYMBOL-VALUE of constants
1365 defined with DEFCONSTANT now signal an error.
1366 * enhancement: SB-SPROF now has support for wallclock profiling,
1367 and is also able to profile specific threads. REPORT output
1368 has also additional sorting options.
1369 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1371 * optimization: structure allocation has been improved
1372 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1373 ** out of line constructors are ~10% faster.
1374 ** inline constructors are ~15% faster.
1375 ** inline constructors are capable of dynamic extent allocation
1376 (generally on x86 and x86-64, in some cases on other platforms
1378 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1380 * optimization: file compiler is now able to coalesce non-circular
1381 lists, non-base strings, and bit-vectors. Additionally, constants
1382 are never referenced through SYMBOL-VALUE at runtime.
1383 * optimization: code defining methods on PRINT-OBJECT (and other
1384 generic functions in the COMMON-LISP package) now loads faster.
1385 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1387 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1388 fasl is now deleted. (reported by Attila Lendvai)
1389 * bug fix: READ-LINE always returned NIL for the last line in files.
1390 (reported by Yoshinori Tahara)
1391 * bug fix: more accurate disassembly annotations of foreign function
1392 calls. (thanks to Andy Hefner)
1393 * bug fix: trimming non-simple strings and non-string string
1394 designators when the there is nothing to trim works properly.
1395 (thanks to James Knight)
1396 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1397 (thanks to Travis Cross)
1398 * fixed some bugs revealed by Paul Dietz' test suite:
1399 ** NIL is a valid function name (regression at 1.0.13.38)
1400 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1401 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1402 fill pointers properly (regression at 1.0.12.23)
1403 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1404 displacement indices properly (regression at 1.0.12.23)
1406 changes in sbcl-1.0.17 relative to 1.0.16:
1407 * temporary regression: user code can no longer allocate closure
1408 variable storage on stack, due to bug 419 without explicitly
1409 requesting it. Please consult sbcl-devel for advice if you need to
1410 use this feature in the meanwhile.
1411 * new feature: runtime argument --control-stack-size can be used to
1412 adjust thread default control stack size.
1413 * enhancement: improved TIME output
1414 ** all times are reported using the measured accuracy (milliseconds
1415 for real and GC times, microseconds for everything else.)
1416 ** processor cycle counts on x86 and x86-64.
1417 ** interpreted forms are counted for both evaluator modes.
1418 ** number of lambdas converted by the compiler is reported.
1419 ** CPU percentage report (computed from real and total run time.)
1420 ** more comprehensive run time reporting, using a condenced format
1421 ** interperted form, lambda, and page fault counts are omitted
1423 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1425 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1426 * optimization: two argument forms of LAST are upto ~10% faster
1427 in normal SPEED policies.
1428 * optimization: NCONC no longer needs to heap cons its &REST list
1429 in normal SPEED policies.
1430 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1431 to Sidney Markowitz)
1432 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1433 regression since 1.0.9.1. (thanks to Eric Marsden)
1434 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1435 since 1.0.15.36. (thanks to Paul Khuong)
1436 * bug fix: LAST when always returned the whole list when given a bignum
1437 as the second argument.
1438 * bug fix: dynamic extent allocation of nested lists and vectors
1439 could leak to otherwise accessible parts.
1440 * bug fix: invalid optimization of heap-allocated alien variable
1442 * bug fix: fasl header checking is less vulnerable to different
1443 platform word lengths.
1444 * bug fix: more correct assembler syntax for GNU binutils
1445 2.18.50.0.4 support. (thanks to Marijn Schouten)
1446 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1448 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1449 declarations) successfully. (reported by Attila Lendvai)
1451 changes in sbcl-1.0.16 relative to 1.0.15:
1452 * minor incompatible change: revert the changes to sb-posix's error
1453 signaling added in 1.0.14.
1454 * minor incompatible change: change PROBE-FILE back to returning
1455 NIL whenever we can't get a truename, as was the case before 1.0.14.
1456 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1457 inherits from ERROR instead of just CONDITION.
1458 * new feature: SB-INTROSPECT can provide source locations for instances
1459 as well. (thanks to Tobias Rittweiler)
1460 * optimization: binding special variables now generates smaller code
1461 on threaded platforms.
1462 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1463 and cases where no :TEST is given but the compiler can infer that
1464 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1465 * optimization: better LOGNOT on fixnums.
1466 * optimization: modular arithmetic for a particular requested width
1467 is implemented using a tagged representation unless a better
1468 representation is available.
1469 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1470 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1471 for wellformedness and returns a specialized vector. (reported by
1472 Francois-Rene Rideau)
1473 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1474 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1475 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1476 unscheduling timer at the same time as another timer fires.
1477 * bug fix: don't reschedule timers for dead threads.
1478 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1479 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1480 bogus errors if select() was interrupted.
1481 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1483 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1484 * enhancement: cleaner backtraces for interactive interrupts, as
1485 well as other cases where the interesting frames used to be
1486 obscured by interrupt handling frames.
1487 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1488 now supported, and tracing a whole package using (TRACE "FOO") now
1489 traces SETF-functions as well.
1490 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1491 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1492 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1493 * unreadably printed representation of hash-tables now includes
1495 * bug fix: partially fixed #188: type propagation from assignments
1496 is now more efficient.
1497 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1498 'DOUBLE-FLOAT) are not flushable.
1499 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1500 full address of the object, and none of the tag bits.
1501 * bug fix: readably printing hash-tables now respects other printer
1502 control variables. (reported by Cedric St-Jean)
1503 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1504 keyword with MAKE-HASH-TABLE.
1505 * bug fix: export SB-POSIX:MKSTEMP.
1506 * bug fix: SORT was not interrupt safe.
1507 * bug fix: XREF accounts for the last node of each basic-block as
1509 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1510 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1511 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1512 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1513 create obsolete instances in the case of redefinition or
1514 obsoletion of a superclass. (thanks to Andy Hefner)
1515 * bug fix: Support for the Alpha architecture has been revived; it had
1516 suffered somewhat from lack of maintenance since sbcl-1.0.
1517 * improvements to the Windows port:
1518 ** The system detects the codepage to use at startup, instead of
1519 using the value from the saved core. (thanks to Kei Suzuki)
1521 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1522 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1523 (see documentation for details.)
1524 * revived support for OpenBSD (contributed by Josh Elsasser)
1525 * partially fixed bug #108: ROOM no longer suffers from occasional
1526 (AVER (SAP= CURRENT END)) failures.
1527 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1528 bodies no longer cause a WARNING to be signalled. (reported by
1530 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1531 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1532 the bug in TRUNCATE.) (reported by Michael Weber)
1533 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1534 no samples. (reported by Andy Hefner)
1535 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1536 no longer appear as (NIL ...) frames in backtraces.
1537 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1538 is now actually exported from SB-EXT as documented. (reported by
1540 * bug fix: sb-aclrepl now correctly understands how to inspect
1541 single-floats on 64-bit platforms where single-floats are not boxed.
1542 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1543 yet been finalized. (reported by Levente Meszaros)
1544 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1545 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1546 SBCL-specific optimize qualities.
1548 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1549 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1550 an executable in the search path, and does so in the child
1551 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1552 been removed; it can be found in the CVS history, for somebody who
1553 needs that search behavior (see the manual).
1554 * minor incompatible change: compiler policy re. weakening type
1555 checks has changed: now type checks are weakened only if SAFETY < 2
1557 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1558 unparsing of directory pathnames as files. Analogously,
1559 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1560 filename to parse into a directory pathname.
1561 * enhancement: implicit generic function creation now signals a
1562 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1563 users can bind handlers for and muffle around calls to LOAD.
1564 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1565 to be used (using the default stream external format), and allows
1566 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1567 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1568 strings and vectors whose element-type or simplicity is not fully
1569 known at compile-time.
1570 * optimization: STRING-TRIM and related functions no longer allocate
1571 a new string when no trimming needs to be performed. These functions
1572 are also faster than before when the input string has been declared
1574 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1575 * optimization: READ-LINE is significantly faster for files containing
1577 * optimization: non-open coded uses of character comparison operators
1578 (e.g. char=) no longer cons when called with more than one parameter
1579 on platforms supporting dynamic-extent allocation.
1580 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1581 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1582 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1584 * bug fix: some sequence functions elided bounds checking when
1586 * bug fix: too liberal weakening of union-type checks when SPEED >
1588 * bug fix: more bogus fixnum declarations in ROOM implementation
1591 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1592 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1593 :SYNCHRONIZED argument, which makes the hash-table safe for
1594 concurrent accesses (but not iteration.) See also:
1595 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1596 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1597 * optimization: CONCATENATE on strings is an order of magnitude faster
1598 in code compiled with (> SPEED SPACE).
1599 * optimization: SUBSEQ is ~50% faster on lists.
1600 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1601 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1602 END is smaller then START.
1603 * bug fix: SB-PROFILE will no longer report extra consing for nested
1604 calls to profiled functions.
1605 * bug fix: ROOM implementation had bogus fixnum declarations which
1606 could cause type-errors when calling ROOM on large images.
1607 * bug fix: if file compilation is aborted, the partial fasl is now
1608 deleted, and COMPILE-FILE returns NIL as the primary value.
1609 * bug fix: number of thread safety issues relating to SBCL's internal
1610 hash-table usage have been fixed.
1611 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1612 be returned from its body when the values were being returned
1613 using unknown-values return convection and the W-P-O was wrapped
1614 inside an UNWIND-PROTECT.
1615 * bug fix: sb-posix should now compile again under Windows, enabling
1616 slime to work again.
1618 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1619 * incompatible change: hash-table accessor functions are no longer
1620 automatically protected by locks. Concurrent accesses on the same hash-table
1621 from multiple threads can give inconsistent results or even corrupt the
1622 hash-table completely. Multi-threaded applications should do their own
1623 locking at the correct granularity. In the current implementation it is
1624 still safe to have multiple readers access the same table, but it's not
1625 guaranteed that this property will be maintained in future releases.
1626 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1627 and will signal an error at runtime.
1628 * enhancement: SB-THREAD package now exports a semaphore interface.
1629 * enhancement: CONS can now stack-allocate on x86 and
1630 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1632 * enhancement: nested lists can now be stack allocated on
1633 platforms providing stack allocation support.
1634 * enhancement: dynamic-extent support has been extended to support
1635 cases where there are multiple possible sources for the stack
1637 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1638 if the mutex is uncontested on Linux.
1639 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1640 as specified by the CLHS. (thanks to Tobias Rittweiler)
1641 * bug fix: NaN comparison now works on x86-64.
1642 * bug fix: CLOSE :ABORT T on a stream with pending output now
1644 * bug fix: instances of non-standard metaclasses using standard
1645 instance structure protocol sometimes missed the slot type checks
1647 * bug fix: known functions can be inlined in high-debug code.
1649 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1650 * minor incompatible change: the MSI installer on Windows no longer
1651 associates .lisp and .fasl files with the installed SBCL.
1652 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1653 on Windows. (thanks to Luis Oliviera)
1654 * new feature: SB-CLTL2 contrib module now implements
1655 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1656 * optimization: scavenging weak pointers is now more efficient,
1657 requiring O(1) instead of O(N) per weak pointer to identify
1658 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1659 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1660 method bodies using constant slot-names when the first argument is
1661 a specializer parameter for the method.
1662 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1663 names, when the class of the instance is a direct instance
1664 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1665 as slow as the constant slot-name case.)
1666 * optimization: member type construction is now O(N) instead
1668 * optimization: UNION and NUNION are now O(N+M) for large
1669 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1671 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1672 now more readable in environments like Slime which display it.
1673 (thanks to Tobias C. Rittweiler)
1674 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1675 was able to infer the correct argument type for the object on which
1676 the CAS operation was being performed.
1677 * bug fix: copy propagation interfered with parallel assignment
1678 semantics in local calls. (reported by Paul Khuong)
1679 * bug fix: the signed modular fixnum shift compiled to wrong code on
1680 x86 and x86-64. (spotted by a slight modification to some of
1683 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1684 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1685 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1686 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1688 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1689 and generic function now print the object identity for anonymous
1690 instances. (thanks to Attila Lendvai)
1691 * enhancement: as an extension to MOP, SBCL now supports SETF of
1692 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1693 (thanks to Attila Lendvai)
1694 * enhancement: sb-cover has an alternate annotation mode which puts
1695 the form annotations at the car of the form, instead of annotating
1696 it completely. The benefit of this mode is that it shows better
1697 which forms were instrumented by the compiler.
1698 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1699 by printer control variables. (reported by Dan Corkill)
1700 * bug fix: system leaked memory when delayed output was performed by
1701 the OS in smaller chunks then expected. (thanks to David Smith)
1702 * bug fix: system leaked memory when file streams were not closed
1704 * bug fix: large objects written to slow streams that were modified
1705 after the write could end up with the modified state written to
1706 the underlying file descriptor.
1707 * bug fix: multiple threads operating in parallel on the same stream
1708 could cause buffer-overflows.
1709 * bug fix: source location information is stored correctly
1710 (broken since 1.0.6). This bug would generally show up as the
1711 Slime debugger highlighting the wrong form when the sldb-show-source
1713 * bug fix: Branch forms are again annotated as branches in the sb-cover
1715 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1716 on x86-64. (reported by Gregory Vanuxem)
1717 * bug fix: EQUALP could return wrong results for structures with raw
1718 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1719 word). (reported by Vjacheslav Fyodorov)
1720 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1723 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1724 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1725 atomic compare-and-swap operations on threaded platforms.
1726 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1727 allows assigning a global minimum value to optimization qualities
1728 (overriding proclamations and declarations).
1729 * enhancement: closed over variables can be stack-allocated on x86
1731 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1733 * optimization: slot definition lookup is now O(1). This speeds up
1734 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1735 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1736 * optimization: ASSOC and MEMBER can now be open-coded for all
1737 combinations of keyword arguments when second argument is constant
1738 and SPEED >= SPACE. In other cases a specialized version is
1740 * bug fix: using obsoleted structure instances with TYPEP and
1741 generic functions now signals a sensible error.
1742 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1743 (reported by Kristoffer Kvello)
1744 * bug fix: backtrace construction is now more careful when making
1745 lisp-objects from pointers on the stack, to avoid creating bogus
1746 objects that can be seen by the GC.
1747 * bug fix: defaulting of values in contexts expecting more than 7
1748 variables now works on x86-64. (reported by Christopher Laux)
1749 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1751 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1752 as the property-list of a symbol.
1753 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1754 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1755 situations requested, are once again file-compileable. (reported
1758 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1759 * MOP improvement: support for user-defined subclasses of
1760 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1761 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1762 the expansion of DEFMETHOD, is responsible for generating a form
1763 which creates a list of specializers when evaluated. Additional
1764 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1765 debugging and introspective support.
1766 * minor incompatible change: the (unsupported) spinlock interface
1767 has changed: free spinlock now has the value NIL, and a held spinlock
1768 has the owning thread as its value.
1769 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1770 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1772 * enhancement: name of a socket-stream is now "a socket" instead of
1773 "a constant string".
1774 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1775 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1776 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1777 for generic functions. (Thanks to Tobias C. Rittweiler)
1778 * optimization: bignum printing speed has been improved by 20-40%
1779 (depending on the bignum size.)
1780 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1782 * bug fix: the cache used by the CLOS to store precomputed effective
1783 methods, slot offsets, and constant return values is now thread and
1785 * bug fix: generic function dispatch function updating is now thread
1786 and interrupt safe (in the sense that the known issues have been
1788 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1789 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1790 * bug fix: asdf systems with dependencies to the SB-POSIX or
1791 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1792 * bug fix: interrupt safety of applicable method computation has been
1795 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1796 * new contrib: sb-cover, an experimental code coverage tool, is included
1797 as a contrib module.
1798 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1799 significantly faster.
1800 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1801 produce more efficient code on x86-64 if the compiler can determine
1802 that (+ INDEX <constant>) does not require a bounds check and FOO
1803 has an element type at least 8 bits wide.
1804 * enhancement: a new, experimental synchronous timeout facility is
1805 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1806 * enhancement: when a symbol name conflict error arises, the
1807 conflicting symbols are always printed with a package prefix.
1808 (thanks to Kevin Reid)
1809 * enhancement: stepping is now once again supported on the SPARC and
1810 MIPS platforms. (It is also now more likely to work on CheneyGC
1812 * enhancement: sb-sprof can now also track and report accurate call
1814 * bug fixes: the treatment of non-standard subclasses of
1815 SB-MOP:SPECIALIZER is more correct.
1816 * incompatible change: PURIFY no longer copies the data from the
1817 dynamic space into the static and read-only spaces on platforms
1818 that use the generational garbage collector
1819 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1821 * bug fix: GC race condition occasionally resulting in crashes with
1822 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1824 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1826 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1827 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1828 * bug fix: an asynchronous interrupt could previously leave the
1829 system running with GC inhibited.
1830 * bug fix: a DECLARE form evaluated at top-level now causes an error
1831 rather than silently (or verbosely) returning NIL.
1832 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1833 result in a error being signalled due to source form lookup errors.
1834 (reported by Peter Graves)
1836 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1837 * incompatible change: removed writer methods for host-ent-name,
1838 host-ent-addresses -- changing the values did not update the DNS
1840 * minor incompatible change: changed experimental JOIN-THREAD interface
1841 * documentation: the manual now lists reader and writer methods
1842 in class slot documentation sections. (thanks to Richard M Kreuter)
1843 * documentation: unwinding from asyncronous events has been
1844 documented as unsafe.
1845 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1846 in multithreaded application code.
1847 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1848 platforms. (thanks to James Anderson for the optimization hint)
1849 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1851 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1852 variants no longer cons.
1853 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1854 their NOT- variants no longer cons.
1855 * optimization: EQUAL hash tables no longer use SXHASH for objects
1856 of all data types, but instead use an EQL hash for types for which
1857 EQUAL is the same as EQL.
1858 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1859 are significantly faster.
1860 * optimization: new STRING-OUTPUT-STREAM implementation is much
1861 faster for large outputs and conses 30% less on average.
1862 * enhancement: XREF information is now collected for references made
1863 to global variables using SYMBOL-VALUE and a constant argument.
1864 * enhancement: SIGINT now causes a specific condition
1865 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1866 * bug fix: FILE-POSITION used to signal an error in some cases where
1867 ANSI requires it to return NIL.
1868 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1869 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1870 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1872 * bug fix: bad type declaration in the CLOS implementation has
1873 been fixed. (reported by James Anderson)
1874 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1875 (thanks to Lutz Euler)
1876 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1877 required by the CLHS. (reported by Samium Gromoff)
1878 * bug fix: dead unbound variable references now signal an error.
1879 (reported by Marco Monteiro)
1880 * bug fix: / with an unused value was being deleted in safe code.
1881 (thanks to Marco Monteiro and Kevin Reid)
1882 * bug fix: number of characters that can be written onto a single
1883 line in a file is unlimited.
1884 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1885 been fixed by inhibiting interrupts for when GC is disabled.
1886 * bug fix: some interrupt safety issues with GETHASH, (SETF
1887 GETHASH), CLRHASH and REMHASH have been fixed.
1888 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1889 specifier no longer causes infinite recursion.
1890 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1891 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1892 * bug fix: an &environment argument with the correct variable information
1893 is passed to macros that are expanded during byte compilation.
1894 (reported by Samium Gromoff)
1895 * bug fix: a logic error was causing the hash function for bignums to
1896 have excessive amounts of collisions. (reported by Faré Rideau)
1897 * bug fix: modifying the contents of an array could change the return
1898 value of SXHASH on that array, which is only allowed for strings
1899 and bit vectors. (bug introduced in 0.9.16)
1900 * improvement: the x86-64/darwin port now passes all tests (except
1901 for the debugger tests) but should still be considered
1902 experimental until this is fixed.
1903 * improvement: a style-warning is signaled for CASE (etc) clauses with
1904 duplicate keys. (thanks to Kevin Reid)
1905 * improvement: macos/x86 and macos/x86-64 now use mach exception
1906 handlers for dealing with illegal instructions (for trapping and
1907 error handling) and memory protection violations (for GC).
1909 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1910 * new platform: experimental support for x86-64/darwin (MacOS).
1911 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1912 and getnameinfo sockets functions are used instead of gethostbyaddr
1913 and gethostbyname, on platforms where the newer functions are available.
1914 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1916 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1917 don't print the startup banner, but behave as if --noinform was passed
1918 as a command line argument. (thanks to Kevin Reid)
1919 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1920 * optimization: code using alien values with undeclared types is much faster.
1921 * optimization: the compiler is now able to open code SEARCH in more cases.
1922 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1923 * bug fix: using standardized COMMON-LISP special variables as loop
1924 variables no longer signals bogus package lock violations. (reported
1926 * bug fix: declaring local loop variables to be of a range-limited type
1927 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1928 (reported by Andras Simon)
1929 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1930 bugs remain on x86-64.)
1931 * bug fix: the #= and ## reader macros now interact reasonably with
1932 funcallable instances.
1933 * bug fix: type-checks for function arguments were compiled using the
1934 compiler policy settings of the wrong lexical environment (in 1.0.2
1936 * bug fix: SHADOW accepts characters as string designators, as required
1937 by the spec (thanks to Eric Marsden)
1938 * bug fix: fixed GC safety issues when foreign functions are called with
1939 non-base strings as arguments
1940 * bug fix: more consistent error output for fatal-compiler-warnings, like
1942 * bug fix: functions with proper names were showing up as NIL in
1943 backtraces (reported by Edi Weitz, regression in 1.0.2)
1945 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1946 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1947 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1948 produce more efficient code on the x86 if the compiler can determine
1949 that (+ INDEX <constant>) does not require a bounds check and FOO
1950 has an element type at least 8 bits wide.
1951 * bug fix: references to undefined variables are handled the same way
1952 in toplevel forms as in the normal compiler
1953 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1955 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1956 (thanks to Jon Buller)
1957 * improvement: faster compilation times for complex functions
1958 * improvement: added readlink support to SB-POSIX (thanks to Richard
1961 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1962 * improvement: experimental support for mach exception handling on
1963 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1965 * improvement: support for GBK external format.
1966 (thanks to Chun Tian (binghe))
1967 * improvement: the debugger now displays variables that have been closed
1968 over, in code compiled with (DEBUG 2) or higher
1969 * improvement: support for executable cores on NetBSD (thanks to
1971 * new feature: added a RESTART-FRAME debugger command
1972 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1973 be used to provide an implementation for FILE-POSITION on Gray streams
1974 (thanks to Eric Marsden)
1975 * new feature: add syslog, openlog and closelog support to SB-POSIX
1976 (thanks to Richard Kreuter)
1977 * optimization: the function call overhead in code compiled with
1978 a high DEBUG optimization setting is significantly
1979 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1980 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1981 (thanks to Tony Martinez)
1982 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1983 evaluated once (reported by Kevin Reid)
1984 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1985 works again (thanks to Kilian Sprotte)
1986 * bug fix: an error is signaled for tagbodies with duplicate tags
1987 (thanks to Stephen Wilson)
1988 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1989 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1990 stack frames from alien callbacks.
1991 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1992 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1993 65k pages (thanks to David Woodhouse)
1994 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1996 changes in sbcl-1.0.1 relative to sbcl-1.0:
1997 * new platform: FreeBSD/x86-64, including support for threading.
1998 * new feature: the compiler stores cross-referencing information
1999 about function calls (who-calls), macroexpansion (who-macroexpands)
2000 and special variables (who-binds, who-sets, who-references) for code
2001 compiled with (< SPACE 3). This information is available through the
2002 sb-introspect contrib.
2003 * new feature: users may subclass SEQUENCE, and have instances of
2004 these classes interoperate with standard Common Lisp functions if
2005 a number of methods are defined. (This feature is experimental
2006 and the interface subject to change based on feedback from SBCL
2007 users and the general community)
2008 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2009 x86/x86-64, rather than the previous fixed depth of 8
2010 * improvement: another pthread back-end of mutex "pthread-futex".
2011 * bug fix: non-ascii command-line arguments are processed correctly
2012 (thanks to Yaroslav Kavenchuk)
2013 * bug fix: non-required arguments were not passed correctly when a method
2014 defined using DEFMETHOD was called from a mop-generated method using
2015 CALL-NEXT-METHOD (reported by Pascal Costanza)
2016 * bug fix: recursion is now permitted in accessors through
2017 SLOT-UNBOUND. (reported by Pascal Costanza)
2018 * bug fix: an error was signaled at startup if the HOME environment
2019 variable was defined, but had an empty value (reported by Peter Van Eynde)
2020 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2021 signal a PROGRAM-ERROR, not a BUG.
2022 * bug fix: SB-POSIX:READDIR works when built with large file support.
2023 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2025 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2026 for better automatic indentation support. (thanks to Matt Pillsbury)
2027 * optimization: loading generic functions no longer takes O(n^2) time,
2028 proportional to the amount of methods in the generic function
2029 (reported by Todd Sabin and Jeremy Brown)
2030 * optimization: the FIND and POSITION family of sequence functions
2031 are significantly faster on arrays whose element types have been
2033 * improvements to the Windows port:
2034 ** Intermittent heap corruption problems have been fixed. (thanks
2035 to Alastair Bridgewater)
2036 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2038 ** Lisp is able to unwind foreign exception frames from alien
2039 callbacks. (thanks to Alastair Bridgewater)
2041 changes in sbcl-1.0 relative to sbcl-0.9.18:
2042 * improvement: experimental support for threading on FreeBSD/x86.
2043 (thanks to NIIMI Satoshi)
2044 * improvement: runtime option --dynamic-space-size can be used
2045 to set the size of the dynamic space reserved on startup.
2046 * improvement: floating point modes in effect are now saved in
2047 core, and restored on startup.
2048 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2049 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2050 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2051 threads are not running after *SAVE-HOOKS* have run.
2052 * improvement: writes to CLOS instance slots are type-checked in code
2053 compiled with (SAFETY 3)
2054 * improvement: floating-point exception handling on FreeBSD (thanks to
2056 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2057 (thanks to Zach Beane)
2058 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2060 * improvement: added support for the Shift-JIS external format.
2061 (contributed by NIIMI Satoshi)
2062 * improvement: callbacks are supported on Linux/PPC. (thanks to
2064 * bug fix: compiler bug triggered by a (non-standard) VALUES
2065 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2066 * bug fix: file compiler no longer confuses validated and already
2067 dumped structurres. (reported by Kaersten Poeck)
2068 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2069 fill-pointer signals a type-error as required. (thanks to
2071 * bug fix: disassemly of funcallable instances works.
2072 * bug fix: single stepping on PPC.
2073 * bug fix: fix thread-safety problems in the type system (generally
2074 manifesting as nonsensical errors like "STRING is a bad type specifier
2075 for sequences" or "The value 1 is not of type FIXNUM")
2076 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2077 (reported by Josip Gracin)
2078 * bug fix: an error is signaled for attempts to displace arrays with
2079 incompatible element types (thanks to Mario Mommer)
2080 * bug fix: more correct handling of wide characters in debug info
2081 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2082 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2083 and don't cause extra consing
2084 * optimization: MAP and MAP-INTO are significantly faster on vectors
2085 whose elements types have been declared.
2086 * Improvements to SB-SPROF:
2087 ** Support for allocation profiling
2088 ** Reduced profiling overhead, especially for long profiling runs
2089 * Improvements to the Windows port:
2090 ** floating point exceptions are now reported correctly.
2091 ** stack exhaustion detection works partially.
2092 ** more accurate GET-INTERNAL-REAL-TIME.
2093 ** better RUN-PROGRAM behaviour in case of errors in the child
2095 ** PROBE-FILE now simplifies pathnames correctly.
2096 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2097 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2098 1st 1970 (although time timezone data will be unreliable).
2099 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2101 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2102 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2103 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2105 * bug fix: two potential GC deadlocks affecting threaded builds.
2106 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2107 returns T (reported by Anton Kazennikov)
2108 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2109 with non-variable places
2110 * bug fix: remove a race condition in the setting of
2111 funcallable-instance functions, this should make threaded CLOS
2112 code more stable against memory faults.
2113 * bug fix: corruption of specials when unbinding is interrupted by an
2114 asynchronous unwind (reported by Hannu Koivisto)
2115 * improvement: the debugger will now also display local variables that
2116 are only used once, for code compiled with a DEBUG optimization quality
2119 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2120 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2121 * incompatible change: External-format support for FFI calls. The
2122 SB-ALIEN:C-STRING no longer implies an ASCII
2123 external-format. Instead the string is subject to external-format
2124 conversion. Additionally return values of type SB-ALIEN:C-STRING
2125 are by default of type (SIMPLE-ARRAY CHARACTER), not
2126 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2127 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2128 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2129 * incompatible change: SB-EXT package no longer contains the
2130 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2131 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2133 * incompatible change: the single-stepper is no longer available
2134 on Alpha, Mips and Sparc platforms.
2135 * minor incompatible change: the direct superclasses of
2136 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2137 not (STANDARD-OBJECT FUNCTION). This makes the
2138 class-precedence-lists of GENERIC-FUNCTION and
2139 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2141 * minor incompatible change: the default stream external format on
2142 non-unicode SBCL is no longer detected from the locale, but is always
2144 * new feature: Add a version of evaluator that uses an interpreter instead
2145 of the compiler. EVAL still uses the compiler by default, to switch it
2146 to use the interpreter, set the value of the variable
2147 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2148 * minor incompatible change: the single-stepper REPL has been merged
2149 with the normal debugger (see the "Stepping" heading of the debugger help
2150 for more details). The debugger command STEP will no longer switch
2151 to the single-stepper REPL.
2152 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2153 for a type now works.
2154 * bug fix: loading of default sysinit file works. (thanks to Leonid
2156 * bug fix: better detection of circularities in the file-compiler.
2157 (reported by Marco Monteiro)
2158 * bug fix: the CL pathname functions now work with files that have
2159 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2160 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2161 systems with Unix98 pty semantics.
2162 * bug fix: ASDF-INSTALL will now work with bsd tar.
2163 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2165 * bug fix: timers expiring in dead threads no longer cause a
2166 type-error (reported by Paul "Nonny Mouse").
2167 * bug fix: thanks to more lightweight single-stepper instrumentation,
2168 code compiled with (DEBUG 3) will compile and execute significantly faster,
2169 and will have more accurate type-inferencing than before
2170 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2171 whose bindings are modified
2172 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2173 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2174 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2175 CL:SOFTWARE-VERSION with proper version
2177 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2178 * feature: implemented the READER-METHOD-CLASS and
2179 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2180 as specified by AMOP.
2181 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2183 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2184 (thanks to Lutz Euler)
2185 * optimization: hashing of general arrays and vectors has been
2186 improved. (reported by Any Fingerhut)
2187 * enhancement: SB-INTROSPECT is now able to find definitions of
2188 profiled functions. (thanks to Troels Henriksen)
2189 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2190 as well, allowing compiler-macros for SETF-functions to expand.
2191 * enhancement: step-instrumentation no longer wraps known
2192 single-value functions with multiple-value context, allowing
2193 better type inference.
2194 * fixed bug #337: use of MAKE-METHOD in method combination now works
2195 even in the presence of user-defined method classes. (reported by
2196 Bruno Haible and Pascal Costanza)
2197 * fixed bug #339(c): if there are applicable methods not part of any
2198 long-form method-combination group, call INVALID-METHOD-ERROR.
2199 (reported by Bruno Haible)
2200 * fixed bug #361: the :FUNCTION initarg in the protocol for
2201 initialization of methods can now be used to override
2202 internally-produced optimized functions. (reported by Bruno
2204 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2205 system-provided lambda expression no longer cause warnings about
2206 unbound #:|pv-table| symbols.
2207 * bug fix: improved the handling of type declarations and the
2208 detection of violations for keyword arguments with non-constant
2210 * bug fix: potentially erronous calls to PATHNAME and
2211 MERGE-PATHNAMES were being flushed in some cases.
2212 (reported by Richard Kreuter)
2213 * bug fix: compiled calls to TYPEP were mishandling obsolete
2214 instances. (reported by James Bielman and Attila Lendvai)
2215 * bug fix: format strings with ~> without matching ~< no longer
2216 trigger an AVER, but signal an understandable error instead.
2217 (reported by Antonio Martinez)
2218 * bug fix: specifying an output-file without a pathname-type for
2219 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2220 of input-file instead of "fasl". (reported by Robert Dodier)
2221 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2222 (reported by James Y Knight).
2223 * bug fix: compiler-macros-function did not consider the environment
2224 argument for shadowing by local functions.
2225 * bug fix: compiler-macros expansion was inhibited by local INLINE
2227 * bug fix: inline expansions of known functions were subject to
2228 step-instrumentation in high debug policies, leading to problems
2229 with type-inference.
2230 * bug fix: compiler failed to differentiate between different CONS
2231 types in some cases.
2232 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2233 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2234 * bug fix: #368: incorrect use of expressed vs. upgraded array
2236 * bug fix: #306a: more precise unions of array types.
2237 * thread-safety improvements:
2238 ** CONDITION-WAIT could return early on Linux, if the thread was
2239 interrupted and subsequently continued with SIGCONT.
2240 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2242 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2243 * added support for the ucs-2 external format. (contributed by Ivan
2245 * minor incompatible change: pretty printing of objects of type
2246 (cons symbol) is, in the default pprint-dispatch-table, now
2247 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2249 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2250 called later in a class's lifetime, possibly as late as when the
2251 first instance of the class is created. Previously,
2252 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2253 class became finalizeable.
2254 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2255 for multibyte external-format streams. (thanks to "vbzoli")
2256 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2257 with :ALLOCATION :CLASS inherited from superclasses of the
2259 * fixed bug: anonymous classes can now be created using the :NAME
2260 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2261 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2262 * fixed bug: core-files saved with :EXECUTABLE T can again be
2263 executed when SBCL_HOME isn't set. (reported by James Knight)
2264 * fixed bug: toplevel LOCALLY forms with declarations could
2265 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2266 * fixed bug: printing from several different threads using different
2267 values of *print-case* could cause invalid output, due to
2268 some internal special variables of the printer not being bound
2269 thread-locally (reported by Max Mikhanosha)
2270 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2271 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2272 (reported by Pascal Costanza)
2273 * fixed bug: FINALIZE-INHERITANCE is called from
2274 REINITIALIZE-INSTANCE on classes when the class has previously
2275 been finalized, as required by AMOP.
2276 * minor code generation optimizations:
2277 ** better register allocation in CLOS dispatching functions
2278 ** overflow detection when coercing signed bytes to fixnums on x86-64
2279 ** is now implemented with one IMUL instruction instead of three shifts
2280 ** more efficient bit-vector access on x86 and x86-64
2281 ** more efficient access to raw structure slots on x86 and x86-64
2282 * fixed some bugs revealed by Paul Dietz' test suite:
2283 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2284 return its argument.
2286 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2287 * feature: thread support on Solaris/x86, and experimental thread support
2289 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2291 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2292 default method for SLOT-UNBOUND.
2293 * minor incompatible change: prevent the user from specializing the
2294 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2295 somewhat counter to the intent of the protocol, I (CSR) think, and
2296 additionally it just doesn't work in SBCL as currently
2297 implemented, thanks to optimizations (that are always valid for
2298 the other three SLOT-VALUEish functions, but not for the setter).
2299 * minor incompatible change: the :SB-LDB feature is now enabled by
2300 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2301 the low-level debugger.
2302 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2303 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2304 down to an SB-SYS:FD-STREAM, allowing direct communication in
2305 more cases. Temporary files and pipes are still used as a fallback
2307 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2308 on the non-reentrant C functions localtime(3) and gmtime(3).
2309 * bug fix: global optimization policy was not visible in LOCALLY and
2311 * bug fix: class objects can be used as specializers in methods.
2312 (reported by Pascal Costanza)
2313 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2314 with a type error. (reported by blitz_ on #lisp)
2315 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2316 failed with a type error. (reported by Pascal Bourguignon)
2317 * bug fix: merging pathnames against defaults with :DIRECTORY
2318 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2319 (reported by James Y Knight)
2320 * bug fix: saving large (>2GB) cores on x86-64 now works
2321 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2322 constant index and a (simple-array (signed-byte 32)) array
2323 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2324 error (patch by Robert J. Macomber)
2325 * feature: TIME now displays the amount of run-time spent in GC
2326 * bug fix: The debugger now does a better job of respecting
2327 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2328 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2329 workaround for bug 403.)
2330 * bug fix: floating point exception handling now works on FreeBSD
2331 (thanks to NIIMI Satoshi)
2332 * fixed some bugs revealed by Paul Dietz' test suite:
2333 ** MISC.641: LET-conversion were not supposed to work in late
2335 * improvements to the Win32/x86 port:
2336 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2337 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2339 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2340 * new feature: source path information is generated for macro-expansion
2341 errors for use in IDE's like Slime (thanks to Helmut Eller)
2342 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2343 * bug fix: compiler does not loop forever on an invalid type in
2345 * improvement: compilation of most CLOS applications is significantly
2347 * optimization: added a limited bytecode compiler for simple toplevel
2348 forms, speeding up compilation and FASL loading
2349 * bug fix: the statistical profiler now properly distinguishes anonymous
2352 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2353 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2354 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2355 into subclasses of the finalized class. Now user calls to
2356 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2357 system return before any subclasses are finalized.
2358 * minor incompatible change: The reader no longer ignores errors
2359 regarding non-existent packages in #+ and #- feature tests.
2360 * new feature: command line options --no-sysinit, --no-userinit to
2361 inhibit loading the corresponding init files
2362 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2363 for sending data through UDP sockets (thanks to François-René Rideau)
2364 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2365 error is signalled instead (thanks to François-René Rideau)
2366 * minor incompatible change: Error signalling behaviour of lexical
2367 operations violating package locks has changed slightly. Refer to
2368 documentation on package locks for details.
2369 * enhancement: EVAL can process IF-expressions without resorting to the
2371 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2372 constant-folded properly due to missing out-of-line functions.
2373 (reported by Mika Pihlajamäki)
2374 * bug fix: LISTEN sometimes returned T even in cases where no data was
2375 immediately available from the stream
2376 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2377 were reversed. (reported by Levente Mészáros)
2378 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2379 when given a vector displaced to an adjustable array. (reported
2381 * bug fix: derivation of float boundaries from numbers outside the
2382 appropriate float range (reported by John Wiseman)
2383 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2385 * bug fix: precomputing cache entries for generic functions with
2386 some subclasses of specializers as yet invalid does not attempt to
2387 fill a cache line with a negative offset. (reported by Levente
2389 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2390 allow condition class objects as arguments to DOCUMENTATION and
2391 (SETF DOCUMENTATION); only find and set documentation for
2392 structure names for the STRUCTURE doc-type. (suggested by Gary
2394 * improvements to the Win32/x86 port:
2395 ** (user-homedir-pathname) and default initialization file
2396 locations now know about the user's "Documents and Settings"
2397 directory (thanks to Yaroslav Kavenchuk)
2398 ** run-program is implemented (thanks to Mike Thomas)
2399 ** sockets support (thanks to Timothy Ritchey)
2400 ** better backtrace support (thanks to Alastair Bridgewater)
2401 ** sb-grovel supported
2402 ** asdf-install and sb-posix work somewhat
2403 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2404 * improvements to the Solaris/x86 port:
2405 ** works on Solaris 11/Solaris Express
2406 ** floating-point exception handling support
2407 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2408 * fixed some bugs revealed by Paul Dietz' test suite:
2409 ** REMOVE-METHOD returns its generic function argument even when
2410 the method is not one of the generic functions' methods.
2411 ** objects declared as MEMBER types can be admissible arguments to
2412 structure accessors.
2413 ** printing characters should simply be printed by the FORMAT ~:C
2415 ** compiler failure when compiling functions with hairy constant
2416 defaults for optional parameters.
2417 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2418 function, which is already optimized.
2420 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2421 * new platform: experimental support for SBCL x86/Darwin, including
2422 MacOS X 10.4.5 on Intel.
2423 * new feature: Unicode character names are now known to the system
2424 (through CHAR-NAME and NAME-CHAR).
2425 * new feature: the filesystem location of SBCL's core file is
2426 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2427 * minor incompatible change: the contrib modules SB-POSIX and
2428 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2429 this change is to make it easier to distribute
2430 location-independent binaries.
2431 * bug fix: as implied by AMOP, standardized classes no longer have
2432 slots named by external symbols of public packages. (reported by
2434 * optimization: calling functions via constant symbols -- as in
2435 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2436 via the function object as in (FUNCALL #'FOO).
2437 * optimization: on x86 and x86-64, the calling convention for the
2438 case of dealing with an unknown number of values has been altered
2439 to be friendlier to the prediction heuristics implemented,
2440 particularly with reference to CALL and RET pairing. (thanks to
2441 Alastair Bridgewater)
2442 * optimization: on x86, the code for access to thread-local symbol
2443 values and binding/unbinding of thread-local symbols is smaller.
2444 (thanks to Alastair Bridgewater)
2445 * enhancement: CONSTANTP is now able to determine constantness of
2446 more complex forms, including calls to constant-foldable standardized
2447 functions and some special forms beyond QUOTE.
2448 * fixed bug: occasional GC crashes on Solaris/x86
2449 * optimization: x86-64 supports stack allocation of results of simple
2450 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2451 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2452 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2453 (thanks to James Knight)
2454 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2455 by the standard (thanks to Stephen Compall)
2457 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2458 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2459 be used for bundling the runtime and the core file into one
2460 executable binary. This feature is not currently supported on all SBCL
2461 platforms. (thanks to James Bielman and NIIMI Satoshi)
2462 * new feature: a generational or ephemeral garbage collector is now
2463 the default on the PowerPC platform (both Linux and Darwin). The
2464 old Cheney (stop and copy) collector is a build-time option.
2465 (thanks to Cyrus Harmon, after Raymond Toy)
2466 * minor incompatible change: the method by which SBCL finds its
2467 contributed modules has changed; it no longer relies on symbolic
2468 links from an $SBCL_HOME/systems directory, but searches directly
2469 in the subdirectories of $SBCL_HOME.
2470 * enhancement: the dynamic heap size on the Linux/PPC platform is
2471 markedly larger, even using the older Cheney garbage collector.
2472 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2473 certain complicated string types. (reported by Gary King)
2474 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2475 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2476 * fixed bug: DOCUMENTATION on structures no longer signals an
2477 error if no structure type of the right name exists. (reported by
2479 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2480 applicable non-standard primary or :AROUND method on
2481 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2482 no longer cause unbound variable errors. (reported by Kevin Reid)
2483 * fixed bug: metacircle resolution in cases where methods have slots
2484 added before the slots from STANDARD-METHOD. (reported by Jean
2486 * fixed bug: the Power PC assembly code for calling into lisp
2487 sometimes computed its return address wrongly (depending on the
2488 15th bit of the address, fixed at link time). This used to
2489 manifest itself in a segmentation violation while building PCL.
2490 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2491 many others over the years)
2492 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2493 the stack pointer (treated as a signed integer) is negative.
2494 (thanks to Peter van Eynde)
2496 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2497 * new platform: experimental support for the Windows operating
2498 system has been added. (thanks to Alastair Bridgewater)
2499 * fixed several bugs in and robustified the PPC FFI (including
2500 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2501 * bug fix: allow non-simple string symbol names (reported by Paul
2503 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2505 * bug fix: saving a core corrupted callbacks on x86/x86-64
2506 * bug fix: closed a loophole in metacircularity detection and
2507 grounding in the PCL implementation of CLOS.
2508 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2509 (reported by tomppa on #lisp)
2510 * bug fix: clear the direction flag on Lisp -> C transitions, as
2511 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2512 (reported by Andrej Grozin and Hendrik Maryns)
2513 * optimization: major improvements to GC efficiency on GENCGC platforms
2514 * optimization: faster implementation of EQUAL
2515 * optimization: emit more efficient opcodes for some common
2516 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2517 * optimization: several other minor code-generation improvements on x86-64
2518 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2520 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2521 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2522 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2523 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2524 by ANSI as a generic function, and for consistency (SETF
2525 GENERIC-FUNCTION-NAME) is treated likewise.
2526 * fixed bug #233.b: make constraint propagation notice when a variable
2527 value is changed after it is referenced but before it is used
2528 * fixed bug #296: no more arbitrary behaviour from filenames with
2529 odd characters as --load arguments. (reported by Adam Warner)
2530 * fixed bug #390: :CHARACTER-SET pathname components now work as
2531 expected. (reported by Tim Daly Jr)
2532 * fixed bug #391: complicated :TYPE intersections in slot
2533 definitions no longer cause an error in PCL internals.
2534 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2535 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2536 returning the number of octets which would be written to the
2537 file-stream. (thanks to Robert J. Macomber)
2538 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2539 arguments to the internal stream functions. (thanks to David
2541 * bug fix: stack exhaustion is now handled on the x86/SunOS
2542 platform. (thanks to Daisuke Homma)
2543 * bug fix: more accurate ROOM results on GENCGC platforms
2544 * optimization: improved type inference for arithmetic-for
2545 index variables in LOOP
2546 * optimization: faster floating-point SQRT on x86-64
2547 * fixed some bugs revealed by Paul Dietz' test suite:
2548 ** DOCUMENTATION returns NIL instead of "" for method combinations
2549 that don't have a docstring
2551 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2552 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2553 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2554 therefore are not customizeable by user code (as seems to be at
2555 least permitted and maybe required by AMOP). As a consolation,
2556 however, the SBCL implementation of these functions now calls
2557 REINITIALIZE-INSTANCE as specified by AMOP.
2558 * bug fix: slot-definition documentation is propagated as per ANSI
2559 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2560 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2561 argument, as do eslotd initialization methods. (from Pascal
2562 Costanza's "Closer" project)
2563 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2564 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2566 * bug fix: it is now possible to have more than one subclass of
2567 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2568 (reported by Bruno Haible, Pascal Costanza and others)
2569 * bug fix: the dependent update protocol now works for generic
2570 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2571 and Pascal Costanza)
2572 * bug fix: condition-class instances corresponding to
2573 DEFINE-CONDITION forms are now created eagerly. (reported by
2574 Kalle Olavi Niemitalo on comp.lang.lisp)
2575 * bug fix: floating point printing is more accurate in some
2576 circumstances. (thanks to Simon Alexander)
2577 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2578 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2579 * bug fix: callbacks on OS X now preserve stack-alignment.
2580 (thanks to Cyrus Harmon)
2581 * enhancement: the x86-64 disassembler is much better at
2582 disassembling SSE instructions. (thanks to Lutz Euler)
2583 * enhancement: CHECK-TYPE on a variable now allows type-inference
2584 (thanks to Vincent Arkesteijn)
2585 * optimization: improved performance of EUC-JP external format.
2586 (thanks to NIIMI Satoshi)
2587 * optimization: performance improvements to IO on file streams of
2588 :ELEMENT-TYPE CHARACTER
2589 * optimization: much faster memory allocation on x86-64
2590 * optimization: faster garbage collections (latency and throughput)
2592 * optimization: faster bignum subtraction and division on x86 and x86-64
2593 (thanks to Lutz Euler)
2594 * optimization: more accurate type-inference for loops that use a
2595 floating point index variable or a negative step.
2597 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2598 * bug fix: add a workaround to SBCL looping infinitely at startup on
2599 Linux kernels with apparently buggy implementations of personality().
2600 (thanks to Svein Ove Aas)
2601 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2602 (thanks to David Lichteblau)
2603 * bug fix: local bindings shadow global symbol macros for
2604 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2605 * optimization: non-open coded uses of numeric comparison operators
2606 (e.g. >) no longer cons when called with more than one parameter
2607 on platforms supporting dynamic-extent allocation.
2608 * enhancement: saving cores with foreign code loaded is now supported
2609 on MIPS/Linux in addition to the previously supported platforms.
2610 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2611 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2612 * bug fix: division by zero in sb-sprof when no samples were collected
2613 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2614 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2615 (thanks to Alexander Kjeldaas)
2616 * new feature: ignoring the return values of destructive functions
2617 like NREVERSE signals a compile-time style-warning.
2618 (thanks to Kevin Reid)
2619 * new feature: the alignment of alien structure fields can be
2620 explicitly specified. (thanks to Cyrus Harmon)
2621 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2622 and dump core on SIGQUIT
2624 ** incompatible change: threads do not inherit values of specials
2625 from their parents (see manual)
2626 ** bug fix: threads stacks belonging to dead threads are freed by the
2627 next exiting thread, no need to gc to collect thread stacks anymore
2628 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2629 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2630 ** bug fix: dynamic variable and thread start related gc lossage
2631 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2633 * fixed some bugs revealed by Paul Dietz' test suite:
2634 ** SUBTYPEP is slightly more accurate on heinously complicated
2635 CONS types where some of the members have uncertain (in the
2636 NIL, NIL sense) type relationships to each other.
2638 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2639 no longer purified unless :PURIFY T is explicitly specified.
2640 ** Non-purified cores are significantly smaller than before
2642 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2643 * new feature: timers based on Zach Beane's excellent timer package
2644 * added support for the following external formats: koi8-u,
2645 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2646 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2647 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2648 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2649 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2650 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2651 * incompatible change: a threaded SBCL will no longer revert to
2652 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2653 * bug fix: interrupts are disabled until startup is complete; no
2654 more sigsegvs when receiving a signal to soon
2655 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2657 * bug fix: add a workaround for the memory randomization features in
2658 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2659 workaround will only be in effect on systems with the proc filesystem
2661 * bug fix: printing objects of type HASH-TABLE signals a
2662 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2664 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2665 have been running for over 50 days. (reported by Gilbert Baumann)
2666 * bug fix: the logic for getting names of functions gets less
2667 confused when confronded with alternate-metaclass
2668 funcallable-instances. (reported by Cyrus Harmon)
2669 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2670 consistent, even on internal alternate-metaclass objects.
2671 * bug fix: flush closure information collected by physical
2672 environment analysis prepass before the main pass. (bug reported
2674 * bug fix: compiler pack phase does not modify a hashtable, which is
2675 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2676 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2677 may be expanded. (reported by Alexander <malishev> on c.l.l)
2678 * bug fix: no more style-warnings when compiling code using LAST
2679 under high-SPEED low-SPACE settings. (reported by David Wallin
2681 * fixed some incompatibilities between SBCL's MOP and the MOP
2683 ** the METAOBJECT class is now implemented;
2684 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2685 STANDARD-OBJECT, as required;
2686 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2687 now compatible (as required by VALIDATE-SUPERCLASS); there
2688 remains a consistency requirement over the presence or absence
2689 of the FUNCTION class in the superclass list of finalized
2690 classes; see the manual for more details;
2691 ** the :AROUND method for COMPUTE-SLOTS on
2692 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2693 requested slot ordering.
2695 ** bug fix: parent thread now can be gc'ed even with a live
2697 ** bug fix: binding a special with PROGV to no value is not
2698 the same as that symbol not having been bound (thanks to
2700 ** bug fix: binding specials is thread safe (thanks to
2702 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2703 and SB-SPROF do not die with 'no handler for signal XX in
2704 interrupt_handle_now(..)' anymore
2705 ** bug fix: WITH-TIMEOUT works with multiple running threads
2706 * fixed some bugs revealed by Paul Dietz' test suite:
2707 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2708 the :method-class keyword argument.
2710 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2711 * new port: the Solaris operating system on x86 processors is now
2712 mostly supported, though some rough edges in the environment
2713 remain. (thanks to Daisuke Homma)
2714 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2715 space for its heap. (thanks to Thiemo Seufer)
2716 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2717 closures. (thanks to Thiemo Seufer)
2718 * minor incompatible change: eof selects abort in the debugger.
2719 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2720 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2722 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2723 deprecated, and will go away in a future revision of SBCL.
2724 * minor incompatible change: GC-ON and GC-OFF are no longer
2725 implemented with a counter, it does not matter how many times gc
2726 is switched on or off
2727 * bug fix: discriminating functions for generic function classes
2728 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2729 make invalid assumptions about method precedence order. (reported
2731 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2732 platforms. (thanks to Thiemo Seufer)
2733 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2734 * bug fix: correct pathname printing with printer escaping is on.
2735 (thanks to Kevin Reid)
2736 * bug fix: complex VOP definitions in "user-space" no longer trigger
2737 package locks. (reported by Zach Beane)
2738 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2739 for funcallable-instance functions, and is no different from
2741 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2742 characters in the current readtable. (reported by Nicholas Neuss)
2743 * bug fix: SUBTYPEP on various CONS types returns more a more
2744 accurate acknowledgment of its certainty.
2745 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2746 lists in some cases. This partially fixes bug 384.
2747 * flush all standard streams before prompting in the REPL and the
2749 * bug fix: signal handling and triggering gc do not conflict
2750 directly anymore, in particular a high frequency sb-sprof does
2751 not prevent gc from running
2752 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2753 approximation for timezone and DST information between the
2754 universal time epoch and the smallest negative 32-bit time_t.
2755 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2756 year 1899 so long as the encoded time is non-negative.
2757 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2758 the correct answer for non-constant rotate amounts when performing
2759 an inline 32-bit rotation.
2761 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2762 there is only one thread in the session
2763 ** bug fix: memory leak for streams created in one thread and
2764 written to in another
2765 ** bug fix: lockup when compiled with gcc4
2766 ** bug fix: race that allows the gc to be triggered when gc is
2768 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2769 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2771 ** bug fix: finished threads are gc'ed properly
2772 * fixed some bugs revealed by Paul Dietz' test suite:
2773 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2774 has arguments with a different set of applicable methods from
2775 the orignal arguments.
2776 ** The type error thrown by MAP now has a correct expected-type
2778 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2779 name a compiled function.
2780 ** Three MISC tests where a large bignum was improperly coerced to
2781 a float that couldn't represent that bignum during type
2782 derivation were fixed.
2783 ** SUBTYPEP can now handle types involving the negation of a
2784 list-form FUNCTION type.
2785 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2786 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2787 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2789 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2790 * New feature: Experimental support for bivalent streams: streams
2791 opened with :element-type :default now allow character and binary
2792 (unsigned-byte 8) I/O
2793 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2794 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2796 * bug fix: no more highly sporadic "couldn't check whether ~S is
2797 readable" when reading a stream and an interrupt hits in the middle
2798 of a select system call
2799 * compiler better recognizes complex arrays (reported by Eduardo
2801 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2802 for variables on SBCL built with linkage-tables. (reported by Luis
2804 * various error reporting improvements.
2805 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2806 (Thanks to Thiemo Seufer)
2807 * bug fix: nested reader invokations work correctly
2808 * bug fix: it is possible to have simultaneous references to foreign
2809 code and foreign data with the same name.
2811 ** added x86-64 support
2812 ** incompatible change: the threading api now works with thread
2813 objects instead of thread ids
2814 ** bug fix: threads are protected from signals and interruption when
2815 starting up or going down
2816 ** bug fix: a race where an exiting thread could lose its stack to gc
2817 ** bug fix: don't halt on infinite error in threads if possible
2818 ** fixed numerous gc deadlocks introduced in the pthread merge
2819 ** bug fix: fixed thread safety issues in read and print
2820 ** bug fix: debugger doesn't hang on session lock if interrupted at
2821 an inappropriate moment
2822 ** bug fix: run-program is now thread safe(r)
2823 ** bug fix: inner with-recursive-lock no longer releases the mutex
2824 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2825 * fixed some bugs revealed by Paul Dietz' test suite:
2826 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2827 EXPECTED-TYPE slots filled.
2828 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2830 ** MAKE-CONDITION accepts classes as type-designators.
2831 ** COMPILE may never return NIL.
2832 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2833 range before calling Unix time functions
2835 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2836 * numerous signal handling fixes to increase stability
2837 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2838 * minor incompatible change: we now correctly canonize default
2839 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2840 as per the MOP, rather than the historical (INITARG INITFUNCTION
2841 INITFORM). (reported by Bruno Haible)
2842 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2843 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2844 for more information.
2845 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2846 pathname is a directory pathname.
2847 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2848 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2850 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2851 :METACLASS argument in addition to a class name. (reported by
2852 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2853 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2854 (reported by Bruno Haible; patch from Gerd Moellmann)
2855 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2857 * bug fix: more cleanups to the floating point exception handling on
2858 x86-64 (thanks to James Knight)
2859 * bug fix: the compiler does not try to constant fold calls of
2860 COERCE and BIT-* functions when they return freshly constructed
2861 objects. (reported by Nikodemus Siivola and Paul Dietz)
2862 * optimization: improved the MIPS versions of generic (in the
2863 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2864 * optimization: direct conversion of (unsigned-byte 32) to floats on
2865 the PowerPC platform.
2866 * optimization: structure instances with raw slots now use less
2867 memory, and probably show better memory locality. (thanks to
2869 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2870 are treated as requests for stack allocation on the x86-64,
2871 Alpha-32, PPC and SPARC platforms.
2872 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2873 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2874 (thanks to Tony Martinez)
2876 ** gcing a dead thread can no longer lead to lockups
2877 ** threads block signals until they are set up properly
2878 ** errno is no longer shared by threads
2879 ** interrupt-thread restores the eflags register on x86
2880 ** fixed some lockups due to gc/thread interaction
2881 * fixed some bugs revealed by Paul Dietz' test suite:
2882 ** invalid dotted lists no longer raise a read error when
2883 *READ-SUPPRESS* is T
2884 ** signal an error if a symbol that names a declaration is used
2885 as the name of a type, or vice versa
2886 ** allow using the (declare (typespec var*)) abbreviation for
2887 (declare (type typespec var*)) with all type specifiers
2888 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2889 ** always return NIL from PPRINT-POP when OBJECT is NIL
2890 ** don't signal errors when pretty-printing malformed LABELS,
2891 FLET or MACROLET forms
2892 ** declarations in a DOLIST body are also in scope for the
2894 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2896 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2899 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2900 * fixed cross-compiler leakages that prevented building a 32-bit
2901 target with a 64-bit host compiler.
2902 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2903 opened with :IF-EXISTS :OVERWRITE.
2904 * fixed bug 281: error for an invalid qualifier in a short-form method
2905 combination method is not signalled until the faulty method is called.
2906 * bug fix: iteration variable type inferrer failed to deal with open
2907 intervals. (reported by Alan Shields)
2908 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2909 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2910 or more runtime options were provided to the sbcl binary.
2911 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2912 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2913 * optimization: there's now a fast-path for fixnum arguments in the
2914 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2915 * optimization: the code generated on x86-64 is more compact thanks
2916 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2917 * bug fix: floating-point exception handling now partly works on
2918 x86-64. (Thanks to James Knight)
2919 * improvement to the MIPS backend from Thiemo Seufer: C-style
2920 64-bit long long arguments and return values to alien functions
2922 * fixed some bugs revealed by Paul Dietz' test suite:
2923 ** the type-error signalled from WARN has a filled-in DATUM slot.
2924 ** the type-error required when a stream is not associated with
2925 a file has the stream as its datum.
2926 ** type-errors on single-floats on x86-64 no longer have
2927 :INVALID-OBJECT as the datum
2928 ** the type-errors signalled for invalid function names now have
2929 a correct expected type
2930 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2931 for structures defined with a :TYPE. Documentation strings for
2932 typed structures are no longer immediately discarded
2933 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2934 broadcast streams and synonym streams. FILE-LENGTH now also works
2935 on broadcast streams.
2937 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2938 * incompatible change: the --noprogrammer option, deprecated since
2939 version 0.7.5, has been removed. Please use the equivalent
2940 --disable-debugger option instead.
2941 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2943 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2944 inoperational for a while now) has been completely removed.
2945 * null lexical environments are now printed as #<NULL-LEXENV>,
2946 significantly reducing the amount of clutter in typical backtraces.
2947 * documentation on weak pointers, finalization, and after GC hooks
2948 has been added to the manual.
2949 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2950 as other specialized array types, is much faster. SUBSEQ and
2951 COPY-SEQ on such arrays have also been sped up.
2952 * optimization: EQL is now more efficient when at least other argument
2953 is known to be of type (OR FIXNUM (NOT NUMBER)).
2954 * fixed bug: the runtime is now less vulnerable to changes in the
2955 size of the SBCL object on OS X, and virtual memory is reserved for
2956 all spaces that need to be at a fixed address.
2957 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2958 * fixed bug: finalizers and after GC hooks that cause consing are now
2960 * fixed bug: compiler error messages and summaries are now printed to
2961 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2962 * fixed inference of the upper bound of an iteration variable.
2963 (reported by Rajat Datta).
2964 * fixed bug 211e: calling local functions with duplicated constant
2965 keyword argument no longer causes a bogus style warning about an
2967 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2968 ftype declaration to be disregarded. (reported by Dave Roberts)
2969 * fixed bug 373: caused by erronous compilation of references to alien
2970 variables in the runtime on ppc/darwin.
2971 * fixed bug 376: CONJUGATE type deriver.
2972 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2973 (reported by Baughn on #lisp)
2974 * a cross-compiler bug on non-x86 platforms has been identified and
2975 fixed. (thanks to Bruno Haible)
2976 * improvements to the MIPS runtime code for increased stability.
2977 (thanks to Thiemo Seufer)
2978 * increased the maximimum compact environment size to allow
2979 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2980 * partial workaround for bug 135: don't name the function we're
2981 calling for hairy cases of EVAL, so as not to accumulate one environment
2982 entry per call to EVAL. (reported by Kevin Reid)
2983 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2984 * optimization: type testing for non-vector arrays should be faster.
2985 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2987 * bug fix: setting 31st element of a bit vector to zero did not work
2989 * bug fix: redefining a class definition which failed due to a
2990 previous accessor / function clash now works (but see BUGS entry
2991 #380 for more problems in this area). (thanks to Zach Beane)
2992 * the long form of DEFINE-METHOD-COMBINATION disables method group
2993 checking when given a single method group with pattern *. (thanks
2995 * on x86 compiler supports stack allocation of results of simple
2996 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2997 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2998 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2999 * fixed some bugs related to Unicode integration:
3000 ** the restarts for recovering from input and output encoding
3001 errors only appear when there is in fact such an error to
3003 * fixed some bugs revealed by Paul Dietz' test suite:
3004 ** MISC.549 and similar: late transformation of unsafe type
3005 assertions into derived types caused unexpected code
3007 ** SCALE-FLOAT type deriver is less wrong.
3008 ** type derivers for EXP, LOG and similar functions compute result
3009 types for complex arguments better.
3010 ** (MISC.563) CONJUGATE type deriver works for very restricted
3012 ** out-of-line type testers for character strings are available.
3013 ** EQUAL compiler transform understands specialness of objects
3015 ** accessing double-floats stored on the stack now works on x86-64.
3016 ** debugger internals could sometimes create invalid lispobjs,
3017 resulting in GC crashes.
3018 ** MISC.548: type check weakening can convert required type into
3020 ** initialization forms for bindings are not in scope of free special
3023 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3024 * incompatible change: thread support for non-NPTL systems has
3025 been removed - locking is buggy and unreliable. A threaded
3026 SBCL build will now warn at startup and refuse to create
3027 new threads, unless futex support is detected in the kernel
3028 * incompatible change: the top level REPL now has only an ABORT
3029 restart associated with it, not TOPLEVEL and ABORT as it used to.
3030 TOP and TOPLEVEL are now available as debugger commands for
3031 returning to the top level.
3032 * incompatible change: forms evaluated in the REPL now use the
3033 global optimization policy.
3034 * incompatible change: user- and system-initialization files are
3035 no longer processed with LOAD, but by READ and EVAL; hence the
3036 global optimization policy, startup package, readtable, etc,
3038 * The .fasl file format number has been incremented because of
3039 various incompatible changes.
3040 * internal entry point details and argument counts no longer appear
3041 in backtraces unless explicitly requested by setting
3042 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3043 * built-in and standard functions no longer have names like "top
3044 level local call to FOO".
3045 * fixed bug 32: functions defined in non-null lexical environments
3046 now have more legible printed representation
3047 * fixed bug 33: functions defined in non-null lexical environemnts
3048 are now more amenable to inspection by INSPECT.
3049 * workaround for bug 354: XEPs no longer appear in backtraces unless
3050 explicitly requested.
3051 * fixed bug: receiving the signal which results from attempting to
3052 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3053 SIGBUS on other *BSDs) on architectures where the C stack is also
3054 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3055 to debugger confusion or wild instability. (reported by Cheuksan
3057 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3058 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3059 (reported by Lutz Euler)
3060 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3061 compiled code. (reported by Paul Dietz)
3062 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3063 specialized parameter to a method to something that is not TYPEP
3064 the specializer is now possible.
3065 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3066 face of package deletion.
3067 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3068 pathname. (reported by David Tolpin on c.l.l)
3069 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3070 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3071 STRING-STREAM and FILE-STREAM, respectively.
3072 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3073 than previously; in addition, its test suite is now run on build.
3074 (thanks to Luke Gorrie)
3075 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3076 * optimization: added a immediate representation for single-floats
3078 * fixed some bugs revealed by Paul Dietz' test suite:
3079 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3080 ** attempting to create a package with a colliding nickname causes
3081 correctable errors to be signalled.
3082 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3083 ** several x86-64 backend bugs related to sign-extension of immediate
3086 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3087 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3088 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3090 * fixed loading of multiply forward-referenced layouts.
3091 (thanks to Cheuksan Wang)
3092 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3093 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3094 (see COMPILE-FILE documentation for details of :PRINT option)
3095 * fixed bugs 19 and 317: fixed-format floating point printing is
3096 more accurate. This also fixes a bug reported by Adam Warner
3097 related to the ~@F format directive.
3098 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3100 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3101 dispatch table if the from-char is a dispatch macro character.
3102 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3103 by the wordsize no longer ignore the last word. (reported by Lutz
3105 * fixed bug in type checking of dynamic-extent variables. (reported
3107 * optimization: sequence traversal functions use their freedom to
3108 coerce function designators to functions.
3109 * optimization: code with many calls to CLOS methods specialized on
3110 CLOS classes has had redundant type checks removed.
3111 * optimization: added declarations to speed up operations that access
3112 the internal character database (for example STRING-UPCASE)
3113 * optimization: comparison operations between floats and sufficiently small
3114 fixnums no longer create extra rationals
3115 * fixed some bugs related to Unicode integration:
3116 ** portions of multibyte characters at the end of buffers for
3117 character-based file input are correctly transferred to the
3118 start of the buffer at the next read.
3119 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3120 passing it through to OPEN.
3121 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3122 argument given to internal calls to OPEN.
3123 ** the built-in comment readers (introduced by character sequences
3124 ";" and "#|") are more forgiving to encoding errors; they will
3125 STYLE-WARN and then attempt to resync the stream at a character
3126 boundary. (thanks to Teemu Kalvas)
3127 * fixed some bugs in the x86-64 port:
3128 ** Negative short int return values from c-calls are sign-extended
3130 ** The stack is aligned to 16-bytes for c-calls, as required by
3131 the ABI. (thanks to Cheuksan Wang)
3132 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3133 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3134 for enums. (thanks to Vincent Arkesteijn)
3135 ** Multiple small optimizations and bugfixes for floating point
3137 * fixed some bugs revealed by Paul Dietz' test suite:
3138 ** Space, Tab, Linefeed, Return and Page have the invalid
3139 secondary constituent character trait.
3140 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3142 ** WITH-INPUT-FROM-STRING should only update the index place on
3144 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3145 works more reliably.
3146 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3147 with one-dimensional arrays with fill pointers.
3148 ** TYPE-OF failed on a complex with an integer realpart and a
3150 ** compiler failure during type inference for the code of form
3151 (IF (EQL X (THE ...)) ...) (MISC.535).
3153 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3154 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3155 platform. The port supports 61-bit fixnums, large memory spaces
3156 and reloading shared object files.
3157 * enhancement: saving cores with foreign code loaded is now
3158 supported on ppc/Darwin in addition to the previously supported
3160 * enhancement: the statistical profiler now walks deeper into the
3161 call stack for more meaningful call-graphs and accrued time
3162 reports (x86/x86-64 only). It also now reports time spent in
3164 * enhancement: it is now possible to trace most individual methods
3165 of a generic function in addition to tracing the generic function
3167 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3169 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3170 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3171 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3172 produces an error. (thanks to Vincent Arkesteijn)
3173 * bug fix: NAMESTRING on pathnames with :WILD components in their
3174 directories works correctly. (thanks to Artem V. Andreev)
3175 * fixed bug 125: compiler preserves identity of closures. (reported
3177 * bug fixed: functions with &REST arguments sometimes failed with
3178 "Undefined function" when compiled with (DEBUG 3). (reported by
3180 * bug fix: overflow during compiling of setting element of a bit
3181 vector with constant index and value. (reported by Timmy Douglas)
3182 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3183 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3184 * on x86 compiler partially supports stack allocation of dynamic-extent
3186 * GO and RETURN-FROM do not check the extent of their exit points
3187 when compiled with SAFETY 0.
3188 * fixed some bugs related to Unicode integration:
3189 ** encoding and decoding errors are now much more robustly
3190 handled; it should now be possible to recover even from invalid
3191 input or output to the terminal. (thanks to Teemu Kalvas)
3192 ** provided a first cut at implementing STRING-TO-OCTETS and
3193 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3194 ** altered the SB-MD5 contributed module slightly, changing the
3195 interface just enough for it to be supportable for builds where
3196 lisp characters are not eight bits.
3197 * fixed some bugs revealed by Paul Dietz' test suite:
3198 ** the FORMATTER-generated functions for ~V[ conditionals require
3199 the correct number of arguments.
3200 ** READ-FROM-STRING returns the mandated second value when applied
3201 to displaced strings.
3202 ** the #\Rubout and #\Backspace characters are treated as invalid
3203 constituent characters by the tokenizer.
3205 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3206 * new feature: reloading changed shared object files with
3207 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3208 * new feature: references to foreign variables and functions
3209 can now be compiled and loaded before the corresponding shared
3210 object file is loaded, as long as the foreign definitions are
3211 available at runtime.
3212 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3213 supported. (thanks to Dan Debertin)
3214 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3215 just keywords. (thanks to Vincent Arkesteijn)
3216 * fixed bug #331: structure-class instances corresponding to
3217 DEFSTRUCT forms are now created eagerly.
3218 * fixed bug #345: backtraces from calls to undefined functions work
3219 on x86 as well. Related bug #61 is now also partially fixed on x86
3220 (backtraces from throws to unknown catch tags.)
3221 * bug fix: lambda-list parsing is now stricter vrt. order and number
3222 of lambda-list keywords.
3223 * bug fix: as specified by AMOP, an error is signalled if a
3224 class-option appears multiple times in a DEFCLASS form. (reported
3226 * bug fix: RANDOM can be compiled when the compiler derives the type
3227 of its numeric argument as a disjoint set of small integers.
3228 (reported by Paul Dietz)
3229 * bug fix: starting a core saved with shared objects loaded when
3230 those objects are not available no longer causes threaded SBCL to
3231 hang. (reported by Sean Ross)
3232 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3234 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3235 argument, which must always be NIL. (reported by Kalle Niemitalo)
3236 * bug fix: printing 1.0d+23 no longer results in an error.
3237 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3238 * bug fix: structure slot setters preserve evaluation order. (thanks
3240 * fixed some bugs related to Unicode integration:
3241 ** RUN-PROGRAM can allow its child to take input from a Lisp
3242 stream. (reported by Stefan Scholl)
3243 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3244 locales. (reported by Ken Causey)
3245 * fixed some bugs revealed by Paul Dietz' test suite:
3246 ** INCF, DECF and REMF evaluate their place form as specified in
3248 ** FORMATTER expands ~{ ~} iteration directives with V or #
3249 parameters correctly.
3250 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3251 consequent uses no arguments correctly.
3252 ** the system has a partial understanding of the (COMPLEX RATIO)
3254 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3257 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3258 * new feature: a build-time option (controlled by the :SB-UNICODE
3259 keyword feature, enabled by default) for building the system with
3260 support for the entire 21-bit character space defined by the
3262 * new feature: the system now has rudimentary external-format
3263 support; the primary user-visible change at this time is that
3264 characters with the high bit set (such as lower-case-e-acute) will
3265 print correctly to a terminal in a UTF-8 environment.
3266 * minor incompatible change: BASE-CHAR no longer names a class;
3267 however, CHARACTER continues to do so, as required by ANSI.
3268 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3269 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3270 has been moved to the SB-EXT package (temporarily re-exported from
3272 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3273 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3275 * fixed bug #351: better error-handlind and reporting for malformed
3277 * fixed bug #350: bignum-printing is now more memory-efficient,
3278 allowing printing of very large bignums, eg. (expt 2 10000000).
3279 (reported by Bruno Haible)
3280 * fixed bug #302: better primitive-type selection for intersection
3282 * fixed bug #308: non-graphic characters now all have names, as
3283 required. (reported by Bruno Haible)
3284 * bug fix: redefining a class with different superclasses now correctly
3285 removes it from the direct-subclasses of its previous superclasses.
3286 (reported by David Morse)
3287 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3288 new value now works. (reported by Bruno Haible)
3289 * bug fix: correct canonicalization of multiple non-standard slot
3290 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3291 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3292 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3293 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3294 now exists, an signals an error.
3295 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3296 during macroexpansion for non-iteration variables as well. (reported
3297 by Bruno Haible for CMUCL)
3298 * bug fix: Cyclic structures and unprintable objects in compiler
3299 messages no longer cause errors. (reported by Bruno Haible)
3300 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3301 and READ-FROM-STRING all now return a primary value of NIL if
3302 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3303 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3304 (reported by Bruno Haible for CMUCL)
3305 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3306 do not designate a condition. (reported by Bruno Haible for
3308 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3309 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3310 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3311 permitting resolution in favour of any of the conflicting symbols.
3312 (reported by Bruno Haible for CMUCL)
3313 * bug fix: EQUAL compiler optimizations is less aggressive on
3314 strings which can potentially compare true despite having distinct
3315 specialized array element types.
3316 * bug fix: unit enumerations can be defined without dividing by
3317 zero. (thanks to Vincent Arkesteijn)
3318 * FORMAT compile-time argument count checking has been enhanced.
3319 (report from Bruno Haible for CMUCL)
3320 * a partial workaround for the bug 262: the compiler does not try to
3321 inline-expand a local function doing RETURN-FROM from a deleted
3322 BLOCK. (thanks to Peter Denno for the bug report and to David
3323 Wragg for the simple test case)
3324 * fixed some bugs revealed by Paul Dietz' test suite:
3325 ** RENAME-PACKAGE allows all package designators as new package
3327 ** constraint propagation and lambda variable substitution are
3328 more cautious in dealing with partially deleted code.
3329 ** compiler sometimes lost reoptimization passes.
3330 ** CERROR, given a condition as condition designator, passes its
3331 remaining arguments to the continue format control without
3333 ** Case-altering FORMAT directives work correctly on non-ASCII
3335 ** The REAL type specifier handles bounds outside the floating
3336 point ranges without signalling FLOATING-POINT-OVERFLOW.
3337 ** Functions with IR1-transformations can create intercomponent
3338 references to global functions.
3339 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3341 ** FORMAT ~R treats a nil value for its first parameter correctly.
3343 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3344 * enhancement: saving cores with foreign code loaded is now
3345 supported on x86/NetBSD and sparc/Linux in addition to the previously
3346 supported platforms.
3347 * bug fix: on some platforms repeated installations caused multiple
3348 copies of HTML documentation to be installed -- should not happen
3349 any more. (reported by Stefan Scholl)
3350 * bug fix: parsing self-recursive alien record types multiple times
3351 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3352 original patch by Helmut Eller for CMUCL)
3353 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3354 (thanks to Richard Kreuter)
3355 * bug fix: defining classes whose accessors are methods on existing
3356 generic functions in other (locked) packages no longer signals
3357 bogus package lock violations. (reported by François-René Rideau)
3358 * bug fix: special variables as DEFMETHOD parameters no longer have
3359 associated bogus type declarations. (reported by David Wragg and
3361 * bug fix: read-write consistency on streams of element-type
3362 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3363 * bug fix: redefiniton of the only method of a generic function with
3364 no DEFGENERIC no longer emits a full WARNING. In addition,
3365 redefinition of generic functions with no DEFGENERIC to an
3366 incompatible lambda list now signals an error. (thanks to Zach
3368 * bug fix: DEFGENERIC now works even when there's a function of the
3369 same name in an enclosing lexical environment. (thanks to Zach
3371 * fixed compiler failure, caused by instrumenting code during
3372 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3373 * optimization: added loop analysis and improved register allocation
3374 * fixed some bugs revealed by Paul Dietz' test suite:
3375 ** POSITION on displaced vectors with non-zero displacement
3376 returns the right answer.
3377 ** (SIMPLE-STRING) is a valid type specifier for sequence
3379 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3381 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3382 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3384 ** The justification version of the FORMAT ~< directive treats
3385 non-zero minpad parameter correctly.
3387 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3388 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3389 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3390 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3391 the supported interface.
3392 * new feature: Single-stepping of code compiled with DEBUG 2 or
3393 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3394 * new feature: saving cores with foreign code loaded is now
3395 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3396 Timothy Moore's work for CMUCL)
3397 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3398 parameters to * instead of NIL if no initform is supplied.
3399 (reported by Johan Bockgaard)
3400 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3401 correctly when FUNCALL appears as the car of the form. Note:
3402 despite this FUNCALL forms are not currently subject to
3403 compiler-macro expansion. (port of Raymond Toy's fix for the
3404 same from CMUCL, reported by Johan Bockgaard)
3405 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3406 (thanks for Teemu Kalvas)
3407 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3408 case instead of terminating the iteration (thanks for Julian
3409 Squires, Sean Champ and Raymond Toy)
3410 * bug fix: incorrect expansion of defgeneric that caused a style
3411 warning. (thanks for Zach Beane)
3412 * bug fix: slot accessor effective method computation works properly
3413 for classes with multiple non-standard applicable methods on
3414 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3415 * on x86 compiler supports stack allocation of results of LIST and
3416 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3417 CMUCL implementation by Gerd Moellmann)
3418 * fixed some bugs revealed by Paul Dietz' test suite:
3419 ** FORMAT strings with both the ~<~:;~> form of the justification
3420 directive and pretty-printing directives cause an error.
3422 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3423 * incompatible change: the internal functions
3424 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3425 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3426 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3427 instead of the old functions.
3428 * new feature: on platforms where "dladdr" is available foreign
3429 function names now appear in backtraces. (based on Helmut Eller's
3431 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3432 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3434 * documentation: ASDF manual is now distributed with SBCL.
3435 * bug fix: SBCL can now load its contributed modules with REQUIRE
3436 even if the system-provided entries have been removed from
3437 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3439 * bug fix: backtraces involving undefined functions or assembly
3440 routines are more informative. (thanks to Brian Downing)
3441 * bug fix: mutually referent alien structures now work correctly.
3442 (reported by Rick Taube)
3443 * bug fix: structures defined by WITH-ALIEN can be referred to
3444 within other definitions in the same WITH-ALIEN.
3445 * bug fix: division operators (MOD, TRUNCATE and the like) with
3446 constant zero divisors and integer dividends no longer generate
3448 * bug fix: provide default methods for INPUT-STREAM-P and
3449 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3450 * bug fix: improve the detection and resolution of MOP metacycles
3451 (where effective method computation depends on the generic function
3452 having its effective method computed). (reported by Bruno Haible)
3453 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3454 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3455 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3456 * bug fix: pathnames with relative directory components can be
3457 represented relative to default pathnames.
3458 * optimization: in taking the GCD of bignums, reduce the two bignums
3459 to approximately the same size (using Euclid's algorithm) before
3460 applying the more sophisticated binary GCD. (thanks to Juho
3462 * optimization: COUNT on bitvectors now operates word-at-a-time.
3463 * optimization: ASH with a positive, but not necessarily constant,
3464 (leftwards) shift, when in a modular context, is compiled to a
3466 * fixed some bugs revealed by Paul Dietz' test suite:
3467 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3468 if the corresponding argument is NIL.
3469 ** FORMAT directives accepting a minpad parameter treat negative
3471 ** literal commas as character parameters to FORMAT directives are
3473 ** literal spaces directly after ~<Newline> directives within a
3474 format-logical-block (~:< ~@:>) do not induce :FILL-style
3475 conditional newlines.
3476 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3477 as specified: it no longer includes conditional newlines).
3478 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3480 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3481 :PER-LINE-PREFIX argument does not evaluate to a string.
3483 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3484 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3485 the manual for details; for now, package locks can be disabled by
3486 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3487 if no major problems are found then it is likely that they will be
3488 compiled in unconditionally.
3489 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3490 unsupported operators on all platforms. To load a shared library
3491 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3492 object file, link it into a shared library outside of SBCL and
3493 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3495 * bug workaround: ROOM T and the GC were not working together
3496 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3497 reporting facility aren't preserved. That reporting has been
3498 disabled, so now until and unless someone figures out how to make it
3499 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3500 * minor incompatible change: as threatened around sbcl-0.8.0, the
3501 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3502 The symbols are also exported from SB-PCL for backwards
3503 compatibility, but more so than before SB-PCL should be treated as
3504 an implementation-internal package.
3505 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3507 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3508 It is known as of this release not to work on the Alpha, however.
3509 * fixed bug #167: errors signalled due to illegal syntax in method
3510 bodies are now more legible.
3511 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3512 designators and can hence be used with TYPEP.
3513 * fixed bug #333: CHECK-TYPE now ensures that the type error
3514 signalled, if any, has the right object to be accessed by
3515 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3516 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3517 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3519 * fixed bug #334: programmatic addition of slots using specialized
3520 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3521 and :ALLOCATION :CLASS slots.
3522 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3523 float exponents. (rereported by Peter Seibel)
3524 * fixed a bug: #\Space (and other whitespace characters) are no
3525 longer considered to be macro characters in standard syntax by
3526 GET-MACRO-CHARACTER.
3527 * fixed bug: initialization of condition class metaobjects no longer
3528 causes an instance of the condition to be created. (reported by
3530 * fixed bug: it is now possible to have slots such that
3531 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3532 description is neither :INSTANCE nor :CLASS.
3533 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3534 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3535 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3536 non-standard SLOT-DEFINITION-ALLOCATION values.
3537 * fixed bugs: various race conditions handling exiting threads.
3538 CL-PPCRE's thread torture test now passes.
3539 * fixed arguably-a-bug: GC time proportional to number of threads in
3540 system even when most of them are idle
3541 * optimization: improved performance of BIT and SBIT on bit-vectors.
3542 * .fasl file incompatibility: The fasl file version number has
3543 been incremented because of changes associated with package locks.
3545 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3546 * minor incompatible change: the system no longer provides
3547 optimization hints (conditions which are TYPEP
3548 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3549 mode; these hints are still emitted when higher SPEED optimization
3551 * new contrib module: a sampling profiler (profiling by statistical
3552 sampling, rather than by instrumenting functions) is available as
3553 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3554 * the behaviour of the standard function ED is now customizeable by
3555 third parties through a hook variable: see ED's documentation
3556 string for information on the protocol.
3557 * the compiler no longer emits efficiency notes for (FUNCALL X)
3558 when the type of X is uncertain under default optimization
3560 * fixed bug 276: mutating a binding of a specialized parameter to a
3561 method to something that is not TYPEP the specializer is now
3563 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3564 exhibit the required behaviour on the x86 platform. (thanks to
3565 Peter van Eynde, Eric Marsden and Bruno Haible)
3566 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3567 even for difficult arguments. (reported by Peter Graves)
3568 * fixed bug 141a: the backquote printer now descends quoted
3570 * fixed another bug in backquote printing: no more destructive
3571 modification of the form's list structure. (reported by Brian
3573 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3574 move between its address being taken and the call to
3575 interrupt_thread, fixing a crashing race condition.
3576 * the SB-POSIX contrib implementation has been adjusted so that it
3577 no longer exhibits ridiculously poor performance when constructing
3578 instances corresponding to C structs.
3580 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3581 * minor incompatible change: the sb-grovel contrib now treats C
3582 structures as alien (in the sense of SB-ALIEN) objects rather than
3583 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3584 has implications for memory management of client code
3585 (sb-grovel-returned objects must now be manually managed) and for
3586 type safety (alien objects now have full types).
3587 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3588 used to control emission of compiler diagnostics, rather than the
3589 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3590 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3591 quality should be considered deprecated.
3592 * install.sh now installs the user manual as well
3593 * (not quite a new documentable feature, but worth considering in
3594 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3595 beginnings of a semantically meaningful condition hierarchy is
3596 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3598 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3599 designator as the defaults argument.
3600 * fixed bug: Displaced arrays whose displaced-to array has become
3601 too small now cause ARRAY-DIMENSION to signal an error, providing
3602 for safer bounds-checking. (reported by Bruno Haible)
3603 * fixed bug: DEFCLASS slot definitions with identical :READER and
3604 :WRITER names now signal a reasonable error. (reported by Thomas
3606 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3608 * fixed bug: Invalid slot specification errors now print correctly.
3609 (thanks to Zach Beane)
3610 * fixed bug 320: Shared to local slot value transfers in class
3611 redefinitions now happen corrently from superclasses as
3612 well. (reported by Bruno Haible)
3613 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3615 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3616 improper lists correctly. (reported by Bruno Haible)
3617 * fixed bug 313: source-transform for <fun-name> was erroneously
3618 applied to a call of a value of a variable with name <fun-name>.
3619 (reported by Antonio Menezes Leitao)
3620 * fixed bug 307: The obsolete instance protocol ensures that
3621 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3622 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3623 remove dead unknown-values globs from the middle of the stack.
3624 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3625 easier to resume long computations after using *BREAK-ON-SIGNALS*
3626 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3627 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3628 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3629 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3630 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3631 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3633 * fixed a (fairly theoretical) bug in string printing: if
3634 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3635 does not have array-element-type equal to the most general string
3637 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3638 function name. (thanks to Nikodemus Siivola)
3639 * fixed bug: compile-time format string checker failed on
3640 non-closed ~{. (reported by Thomas F Burdick)
3641 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3642 don't warn on legal loop code involving more than one aggregate
3643 boolean. (thanks to Nikodemus Siivola)
3644 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3645 in keyword position to MAKE-PACKAGE was not being reported as
3647 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3648 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3650 * fixed bugs 280 and 312: the checking for multiple definitions in a
3651 file is less likely to become confused by uses of inline
3653 * fixed bug: the #S reader macro performs the keyword coercion
3654 specified for slot names. (reported by Kalle Niemitalo)
3655 * fixed bug: lambda lists may contain symbols whose names start with
3656 & but are not lambda-list-keywords; their occurrence triggers a
3658 * fixed bug 321: define-method-combination argument lambda lists do
3659 not cause invalid code to be generated when &optional or &aux
3660 variables have default values. (reported by Bruno Haible)
3661 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3662 have CLOS classes; this appears also to have fixed reported
3663 instability in stack exhaustion detection.
3664 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3665 MUFFLE-WARNING when no associated restart is present is now
3667 * optimization: rearranged the expansion of various defining macros
3668 so that each expands into only one top-level form in a
3669 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3671 * optimization: used a previously little-used slot in symbols to
3672 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3674 * fixed some bugs revealed by Paul Dietz' test suite:
3675 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3677 ** Fixed an optimization bug related to inheritance of initforms
3678 from local to shared slots.
3679 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3680 ** CAST optimizer forgot to flush argument derived type.
3681 ** print/read consistency on floats is now orders of magnitude
3682 more likely. (thanks also to Bruno Haible for a similar report
3684 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3685 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3686 for objects of type REAL. Make it so.
3687 ** SXHASH is specified (infelicitously) to respect similarity,
3688 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3689 it so. (thanks to Markus Ziegler)
3690 ** on the Alpha, the compiler succeeds in compiling functions
3691 returning a known number of arguments greater than 63.
3692 ** fixed handling of invalid NIL arguments in keyword position
3694 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3696 ** provided a readably-printable representation for RANDOM-STATE
3698 ** ensured that pathnames, where they have a namestring, always
3699 print using #P"..." syntax.
3701 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3702 * Support for the forthcoming 2.0 version of the NetBSD kernel
3703 running on x86 hardware has been added. (thanks to Perry
3704 E. Metzger most immediately, and others for their past work)
3705 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3706 current release version; SBCL's OpenBSD support had been broken
3707 since about the time of OpenBSD's switch to ELF binary format.)
3708 * [placeholder for DX summary]
3709 ** user code with &REST lists declared dynamic-extent, under high
3710 speed or space and low safety and debug optimization policy.
3711 * The manual has been converted to Texinfo format and the debugger
3712 chapter from the cmucl manual has been added.
3713 * A facility has been added to extract documentation strings from
3714 sbcl and store them as Texinfo-formatted snippets for inclusion in
3715 the manual (via Texinfo's @include directive)
3716 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3717 the test case to Dave Roberts)
3718 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3719 pointers. (reported by Sean Ross)
3720 * bug fix: PROFILE output is printed nicely even for large numerical
3721 values. (thanks to Zach Beane)
3722 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3723 greater than 32 handle EOF correctly.
3724 * bug fix: on X86 an immediate argument of the IMUL instruction is
3725 correctly printed in disassembly. (thanks to Lutz Euler)
3726 * bug fix: class slots in redefined classes preserve their old
3727 values. (thanks to Bruno Haible and Nikodemus Siivola)
3728 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3729 succeeds. (reported by Marco Baringer)
3730 * fixed some bugs revealed by Paul Dietz' test suite:
3731 ** READ-SEQUENCE now works on ECHO-STREAMs.
3732 ** RATIONALIZE works more according to its specification. (thanks
3735 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3736 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3737 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3738 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3739 should matter to you only if you rebind the printer control
3740 variables and then find you want different bindings in the
3741 debugger than in the ordinary execution of your program.)
3742 * The runtime build system has been tweaked to support building
3743 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3744 assembler and linker. (thanks to Nikodemus Siivola)
3745 * Unbound, undefined, undeclared variables now trigger full
3746 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3747 more often programmer error than deliberate exploitation of undefined
3749 * optimization: the hash algorithm for strings has changed to one
3750 that is less vulnerable to spurious collisions. (thanks to Juho
3752 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3753 needless bounds checking. (thanks to Juho Snellman)
3754 * optimization: implemented multiplication as a modular
3755 (UNSIGNED-BYTE 32) operation on the PPC backend.
3756 * fixed some bugs revealed by Paul Dietz' test suite:
3757 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3759 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3760 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3761 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3763 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3765 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3767 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3768 their output stream on EOF from read.
3769 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3770 have been read to end-of-file.
3771 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3773 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3774 description of determination of which consecutive characters
3776 ** Printing the "Space" character with escaping on now yields "#\\ ",
3777 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3778 ** Reading floating-point numbers with *READ-BASE* set to a number
3779 less than 10 works correctly.
3780 ** Reading floating-point numbers with *READ-BASE* set to a number
3781 more than 10 works correctly.
3782 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3783 the readtable currently in effect.
3785 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3786 * minor incompatible change: parsing of namestrings on a physical
3787 (Unix) host has changed; numbers after the final #\. in a
3788 namestring are no longer interpreted as a version field. This is
3789 intented to be largely invisible to the user, except that the
3790 meaning of the namestring "*.*.*" has changed: it now refers to a
3791 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3792 should usually be replaced by
3793 (make-pathname :name :wild :type :wild :version :wild)
3794 with the added benefit that this is more likely to be portable.
3795 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3796 option to OPEN now signals an error if the file being opened
3797 exists; this may have an impact on existing code.
3798 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3799 signals received, on the PowerPC platforms (both Linux and
3800 Darwin). (thanks to Pierre Mai for pointing out the location of
3802 * several fixes on OS X: The system now builds and runs cleanly on
3803 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3804 (thanks to Brian Mastenbrook)
3805 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3806 second-resolution: integer multiples of 1/3600 between -24 and 24.
3807 (thanks to Vincent Arkesteijn)
3808 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3809 type when called with 1 argument; PEEK-CHAR checked type of
3810 PEEK-TYPE only after having read first character from a
3811 stream. (reported by Peter Graves)
3812 * bug fix: the garbage collector now has much better locality
3813 behaviour, and in particular no longer treats all memory as being
3814 exhausted when many small objects point to each other in a deeply
3816 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3817 recognized as being TYPEP their class.
3818 * bug fix: the PUSHNEW documentation string has been corrected.
3819 (thanks to Vincent Arkesteijn)
3820 * bug fix: defaulting of the value for the last of an atypically
3821 large number of multiple values being bound was not being
3822 performed correctly on the Alpha or PPC platforms
3823 * optimization: implemented multiplication as a modular
3824 (UNSIGNED-BYTE 32) operation on the x86 backend.
3825 * optimization: SEARCH on simple-base-strings can now be open-coded.
3826 (see also contrib/compiler-extras.lisp for inspiration for
3827 teaching the compiler about the Boyer-Moore algorithm).
3828 * value, returned by MAX (and MIN) called with several EQUALP, but
3829 not EQL, arguments now does not depend on compiler settings.
3830 * fixed some bugs revealed by Paul Dietz' test suite:
3831 ** in stack analysis liveness information is propagated from
3832 non-local entry points.
3833 ** pathwise CAST removing failed when the CAST node did not start
3835 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3836 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3838 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3839 host is already defined.
3840 ** RENAME-FILE works on streams instead of signalling an internal
3842 ** PEEK-CHAR uses the current readtable when determining whether
3843 or not a character is whitespace.
3844 ** MERGE-PATHNAMES handles the case when the pathname does not
3845 specify a name while the default-pathname specifies a version.
3846 ** Pathnames now stand a better chance of respecting print/read
3848 ** Attempting to use standardized file system operators with a
3849 pathname with invalid :DIRECTORY components signals a
3851 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3853 ** DIRECTORY on logical pathnames is more correct.
3854 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3855 signal a TYPE-ERROR if their argument is not a stream.
3856 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3857 designator argument does not designate a stream.
3858 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3859 examining the synonym.
3860 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3862 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3863 element-type larger than ([UN]SIGNED-BYTE 32).
3865 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3866 * When built with the :SB-FUTEX feature, threaded builds now take
3867 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3868 for faster/more reliable mutex and condition variable support.
3869 * Incompatible change (but one you probably shouldn't have been using
3870 anyway): the interface and code for arbitrating between multiple
3871 threads in the same user session has been redesigned.
3872 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3873 error when called without an explicit environment argument.
3874 (thanks to Nikodemus Siivola)
3875 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3876 confused about their position. (thanks to Adam Warner and Gerd
3878 * bug fix: Pretty printing backquoted forms with unquotations in the
3879 argument list position of various code constructs such as LAMBDA
3880 now works correctly. (reported by Paul Dietz)
3881 * bug fix: Pretty printing unquotations no longer loses all
3882 stream position information.
3883 * optimization: performance of string output streams is now less
3884 poor for multiple small sequence writes.
3885 * optimization: performance of CSUBTYPEP in the presence of complex
3886 expressions involving CONS and NOT many times has been improved.
3887 (reported by Paul Dietz)
3888 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3890 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3891 streams for the REPL, for the debugger, and so on. (thanks to
3893 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3894 * fixed some bugs revealed by Paul Dietz' test suite:
3895 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3896 is ignored if it is too small, rather than propagating through
3897 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3898 ** extremely complex negations of CONS types were not being
3899 sufficiently canonicalized, leading to inconsistencies in
3901 ** VALUES tranformer lost derived type.
3903 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3904 * fixed a bootstrapping bug: the build process no longer assumes
3905 that the various BOOLE-related constants have the same value in
3906 host and target lisps. (noted by Paul Dietz' test suite on an
3907 SBCL binary built from CLISP)
3908 * The system can now be dynamically linked on the MIPS platform,
3909 which enables dynamic loading of foreign code from Lisp. (thanks
3910 to Ralf Baechle for discussions on the MIPS ABI)
3911 * The system now records debugging information for its own source
3912 files in a filesystem-position-independent manner, relative to
3913 the "SYS" logical host.
3914 * fixed a compiler bug: MV-LET convertion did not check references
3915 to the "max args" entry point. (reported by Brian Downing)
3916 * tweaked disassembly notes to be less confident about proclaiming
3917 some instruction as an LRA. (thanks to Brian Downing)
3918 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3919 now each have their own history, command character, and other
3920 characteristics. (thanks to David Lichteblau)
3921 * fixed some bugs revealed by Paul Dietz' test suite:
3922 ** compiler failure in compiling LOGAND expressions including a
3924 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3925 shift greater than 32.
3926 ** FLUSH-DEST did not mark blocks for type check regeneration.
3927 ** HANDLER-CASE failed to accept declarations in handler clauses
3928 in some circumstances.
3930 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3931 * New code in contrib/sb-introspect (still probably not entirely
3932 stable yet) provides some support for smart Lisp development
3933 environments like SLIME.
3934 * The conditions signalled for errors occurring when loading .fasl
3935 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3936 in a way which should help ASDF recover gracefully.
3937 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3938 stuff has been cleaned up. If you code contrib/ stuff, this might
3939 affect you, and you can look at contrib/README, contrib/STANDARDS,
3940 and/or the 0.8.4.27 diff to check.
3941 * In full calls the compiler now does not generate checks for declared
3942 argument types for all arguments.
3943 * various threading fixes
3944 ** and some experimental patches which didn't make it into
3945 the main tree for this release, but which are shipped in
3946 contrib/experimental-thread.patch as a possible fix for some
3947 failures (deadlock, spinning...) in GC-intensive multithreaded
3949 * fixed PPC build problem (source code incompatibility of different
3950 library versions): added offsetof() hackery which attempts to divine
3951 where glibc maintainers put uc_mcontext today
3952 * fixed bug 282: compiler does not trust type assertions while passing
3953 arguments to a full call.
3954 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3955 &OPTIONAL VALUES type parameter.
3956 * fix bug 214: algorithm for noting rejected templates is now more
3957 similar to that of template seletion. (also reported by rydis on
3959 * fixed bug 141b: printing backquoted information readably and prettily
3960 inserts a space where necessary.
3961 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3962 (CHARACTER 10) are now reported as errors, rather than propagated
3963 as unknown types. (reported by piso on #lisp)
3964 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3965 with values NIL and :ERROR. (thanks to Milan Zamazal)
3966 * fixed bug 191c: CLOS now does proper keyword argument checking as
3967 described in CLHS 7.6.5 and 7.6.5.1.
3968 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3969 longer raise an error; further, using a list as a for-as-arithmetic
3970 counter now raises a meaningful error.
3971 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3972 now understood by sequence creation functions such as MAKE-SEQUENCE
3974 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3975 a STRING-INPUT-STREAM.
3976 * compiler enhancement: SIGNUM is now better able to derive the type
3978 * type declarations inside WITH-SLOTS are checked. (reported by
3980 * fixed some bugs revealed by Paul Dietz' test suite:
3981 ** incorrect optimization of TRUNCATE for a positive first
3982 argument and negative second.
3983 ** compiler failure in let-convertion during flushing dead code.
3984 ** compiler failure while deriving type of TRUNCATE on an
3985 interval, containing 0.
3986 ** ASH of a negative bignum by a negative bignum count now returns
3988 ** intersection of CONS types now canonicalizes properly, fixing
3989 inconsistencies in SUBTYPEP.
3991 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3992 * incompatible change: The --disable-debugger command line
3993 option now clobbers the debugger at a more fundamental
3994 level, by redefining #'INVOKE-DEBUGGER instead of by
3995 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3996 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3997 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3998 enter the debugger REPL and then suffer recursive errors
3999 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4000 while under the new system, BREAK in --disable-debugger mode
4001 terminates the system just as an unhandled error would.
4002 * fixed compiler performance when processing loops with a step >1;
4003 * bug fix: DOCUMENTATION now retrieves generic function
4004 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4005 support has been systematized, and now supports the methods
4006 specified by ANSI, along with a default method and a method for
4007 slot documentation. (reported by Nathan Froyd)
4008 * bug fix: effective methods associated with a generic function are
4009 no longer cached over a change of that generic function's method
4010 combination. (reported by Andreas Fuchs)
4011 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4012 names a non-existent directory. (thanks to Andreas Fuchs)
4013 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4014 the PPC platform, lead to stack corruption; this has been fixed.
4015 (reported by Rainer Joswig)
4016 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4017 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4018 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4019 arithmetic in general, is now much more reliable on the PPC
4021 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4022 platform now returns the right answer.
4023 * optimization: restored some effective method precomputation in
4024 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4025 precomputation is now tunable.
4026 * optimization: compiler-internal data structure use has been
4027 reviewed, and changes have been made that should improve the
4028 performance of the compiler by about 20%.
4029 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4030 simple-base-strings and simple-bit-vectors is improved.
4031 * optimization: the optimization of 32-bit logical and arithmetic
4032 functions introduced in version 0.8.3 on the x86 has been
4033 implemented on the mips, ppc and sparc platforms; an
4034 implementation of the same facility, but for 64-bit arithmetic,
4035 has been added for the alpha.
4036 * microoptimization: the compiler is better able to make use of the
4037 x86 LEA instruction for multiplication by constants.
4038 * bug fix: in some situations compiler did not report usage of
4039 generic arithmetic in (SPEED 3) policy.
4040 * bug 145b fix: compiler used wrong type specifier while converting
4041 MEMBER-types to numeric.
4042 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4044 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4045 index argument now works properly on the Alpha platform.
4046 * bug fix: floating point exception treatment on the Alpha platform
4048 * bug fix: FILE-POSITION works much better on string input and
4049 output streams. (thanks to Nikodemus Siivola)
4050 * bug fix: many threading/garbage collection symptoms sorted.
4051 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4052 might be pseudo-atomic.
4053 * internal change: Stopping for GC is now done with signals not
4054 ptrace. GC is now done in whichever thread wanted it, instead of
4056 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4058 * bug fix: result form in DO is not contained in the implicit
4060 * incompatible change: ICR structure is changed; the value part of
4061 CONTINUATION is now called LVAR; corresponding functions are
4062 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4063 * added type deriver for ISQRT (thanks to Robert E. Brown).
4064 * bug fix: better support for loading from the command line when an
4065 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4067 * fixed some bugs revealed by Paul Dietz' test suite:
4068 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4069 ** ROUND and FROUND now give the right answer when given very
4070 small float arguments.
4071 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4073 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4074 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4075 ** LCM should return a non-negative integer.
4076 ** PARSE-INTEGER returned the index of a terminator instead of the
4077 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4078 ** PARSE-INTEGER returned an incorrect index being applied to a
4080 ** LCM with two arguments of 0 returns 0 rather than signalling
4082 ** unsigned addition of a 32-bit constant with the high bit set no
4083 longer causes an internal compiler error on the x86.
4084 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4085 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4086 with negative last argument.
4087 ** byte specifiers with zero size and position no longer cause
4088 an error during type derivation.
4089 ** bignum multiplication on the Alpha platform now returns the
4091 * porting: The system now builds on SuSE AMD64, although it still
4092 generates a 32-bit binary.
4093 * .fasl file incompatibility: The fasl file version number has
4094 been incremented (because of the changes to internal compiler
4095 data structures referred to above).
4097 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4098 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4099 more accurately, on the Darwin kernel running on PowerPC hardware.
4100 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4101 * Compiler code deletion notes now signal a condition of type
4102 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4103 an associated MUFFLE-WARNING restart.
4104 * The compiler now performs limited argument count validation of
4105 constant format strings in FORMAT, and where appropriate in ERROR,
4106 CERROR and WARN. (thanks to Gerd Moellmann)
4107 * New ASDF-INSTALL contrib can be used for automatic download and
4108 installation of third-party Lisp code from CCLAN or other sites
4110 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4111 which forces another thread to execute a function supplied by the
4113 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4114 now accept and act upon their :ELEMENT-TYPE keyword argument.
4115 (reported by Martin Atzmueller, Edi Weitz)
4116 * bug fix: FILE-POSITION now accepts position designators up to
4117 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4118 is the greater. (thanks to Patrik Nordebo)
4119 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4120 Kalle Olavi Niemitalo)
4121 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4122 printable. (reported by Eric Marsden)
4123 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4124 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4125 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4126 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4127 (thanks to Stig Sandoe)
4128 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4129 UNREAD-CHAR now correctly includes the unread character in the
4130 target sequence. (thanks to Gerd Moellmann)
4131 * bug fix in threaded builds: the system can now be suspended and
4132 resumed by shell job control with minimal disruption.
4133 * bug fixes in times and timezones >2038AD
4134 * better handling of "where is GNU make?" problem in build scripts
4135 (thanks to Nikodemus Siivola)
4136 * new optimization: inside a named function any reference to a
4137 function with the same name is considered to be a self-reference;
4138 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4139 optimization quality.
4140 * new optimization on x86: logical functions and + now have
4141 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4142 used when the result is truncated to 32 bits.
4143 * VALUES declaration is partially enabled.
4144 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4145 * fixed some bugs revealed by Paul Dietz' test suite:
4146 ** The system now obeys the constraint imposed by
4147 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4148 types form a lattice under type intersection.
4149 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4150 ** ASSOC now ignores NIL elements in an alist.
4151 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4152 and (1+ MOST-POSITIVE-FIXNUM) answers.
4153 ** The addition of a method with invalid qualifiers to a generic
4154 function does not cause an error to be signalled immediately;
4155 a warning is signalled, and the error is generated only on
4156 calling the generic function.
4157 * changed .fasl file version number, in part to add type codes for
4158 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4159 obscure ANSI requirements
4161 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4162 * fixed bug 148: failure to inline-expand a local function left
4163 garbage, confusing the compiler.
4164 * fixed bugs 3cd: structure slot readers perform type check if the
4165 slot can have an invalid value (i.e. it is either not initialized
4166 or can be written with a less specific slot writer).
4167 * bug fix: the compiler now traps array references to elements off
4168 the end of an array; previously, the bounds checking in some
4169 circumstances could go off-by-one.
4170 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4172 * type declarations for array element types now obey the description
4173 on the CLHS page "Declaration TYPE", as per discussions on
4174 sbcl-help around 2003-05-08. This means that a declaration
4175 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4176 declaration, all references to BAR will be asserted or assumed
4177 (with THE, so dependent on compiler policy) to involve objects of
4178 type FOO. Note that no such declaration is implied in
4179 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4180 * declared types of functions from the "Conditions"
4181 chapter. (reported by Paul Dietz)
4182 * bug fix: CERROR accepts a function as its first argument.
4183 * bug fix: NTH an NTHCDR accept a bignum as index
4184 arguments. (reported by Adam Warner)
4185 * optimization: character compare routines now optimize comparing
4186 against a constant character. (reported by Gilbert Baumann)
4187 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4188 argument now works properly on the MIPS platform.
4189 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4190 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4191 declared to have a functional type, does not cause an error
4193 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4194 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4195 * fixed bug: if last continuation of a deleted block has a
4196 destination, this destination should be deleted too. (reported by
4198 * fixed a bug in the bootstrap process: the host compiler's values
4199 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4200 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4201 test case from Patrik Nordebo)
4202 * improved the ability of the disassembler on the PPC platform to
4203 provide helpful disassembly notes.
4204 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4205 the class in more cases than previously.
4206 * bug fix: FILE-POSITION now understands :START and :END for
4207 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4208 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4209 8) data. (thanks to David Lichteblau)
4210 * bug fix: it is possible to add a method to a generic function
4211 without lambda list.
4212 * bug fix: reader failed to signal END-OF-FILE inside an
4213 object representation. (reported by Nikodemus Siivola)
4214 * fixed some bugs revealed by Paul Dietz' test suite:
4215 ** LAST and [N]BUTLAST should accept a bignum.
4216 ** condition slot accessors are methods.
4217 ** (VECTOR NIL) is a subtype of STRING.
4219 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4220 * minor incompatible change: some nonsensical specialized lambda
4221 lists (used in DEFMETHOD) which were previously ignored now signal
4223 * minor incompatible change: the system is now aware of the types of
4224 variables in the COMMON-LISP package, and will signal errors for
4225 most violations of these type constraints (where previously they
4226 were silently accepted).
4227 * minor incompatible change: COMPILE-FILE now uses the freedom
4228 afforded (ANSI 3.2.2.3) to use derived function types for
4229 functions defined in the same file. This also permits the system
4230 to warn on static type mismatches and function
4231 redefinition. (Currently it does not work with high DEBUG level.)
4232 * minor incompatible change: VALUES declaration is disabled.
4233 * When issuing notes, the compiler now signals a condition of type
4234 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4235 restart for use in user handlers. It is expected that the
4236 COMPILER-NOTE condition will eventually become a condition
4237 supertype to a hierarchy of note types, which will then be
4238 handleable in a similar fashion. However, at the moment, no such
4239 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4240 but it's an implementation detail, not a classification for the
4242 * Changes in type checking closed the following bugs:
4243 ** type checking of unused values (192b, 194d, 203);
4244 ** template selection based on unsafe type assertions (192c, 236);
4245 ** type checking in branches (194bc).
4246 * A short form of VALUES type specifier has ANSI meaning (it has
4247 increased the number of situations when SBCL cannot perform type
4249 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4250 keywords or constants is permissible.
4251 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4252 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4253 classes. (thanks to Antonio Martinez)
4254 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4255 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4256 argument to a pretty-print stream. Instead, it leaves any such
4257 operations to DESCRIBE-OBJECT methods.
4258 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4260 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4261 lambda lists. (thanks to David Lichteblau)
4262 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4263 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4264 (thanks to Gerd Moellmann)
4265 * fixed bug 246: increased compilation speed of long
4266 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4268 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4270 * DEFCONSTANT now throws a condition of type
4271 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4272 constant to a non-EQL value; CONTINUE and ABORT restarts
4273 respectively change and preserve the value.
4274 * fixed bug 63: The code walker, part of the implementation of CLOS,
4275 is now better at handling symbol macros.
4276 * bug fix: There is no longer an internal implementation type named
4277 CL:LENGTH. (reported by Raymond Toy)
4278 * bug fix: In macro-like defining macros/special operators the
4279 implicit block does not enclose the lambda list.
4280 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4281 enclosed in parentheses) are not suitable as type specifiers, and
4282 their use properly signals an error now.
4283 * bug fix: An argument count mismatch for a type specifier in code
4284 being compiled no longer causes an unhandled error at compile
4285 time, but signals a compile-time warning.
4286 * fixed simple vector readable printing
4287 * bug fix: DESCRIBE takes more care over whether the class
4288 precedence list slot of a class is bound before accessing it.
4289 (reported by Markus Krummenacker)
4290 * bug fix: FORMATTER can successfully compile pretty-printer format
4291 strings which use variants of the ~* directive inside.
4292 * bug fix: SEARCH now applies its TEST predicate to the elements of
4293 the arguments in the correct order. (thanks to Wolfhard Buss)
4294 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4295 in type inference. (thanks to Robert E. Brown)
4296 * bug fix: Reading in symbols with an explicit package name of ""
4297 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4298 * fixed some bugs revealed by Paul Dietz' test suite:
4299 ** NIL is now allowed as a structure slot name.
4300 ** Arbitrary numbers, not just REALs, are allowed in certain
4301 circumstances in LOOP for-as-arithmetic clauses.
4302 ** Multiple class redefinitions before slot access no longer
4303 causes a type error.
4304 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4305 association between the name and a class.
4306 ** Generic functions with non-standard method-combination and over
4307 five methods all of which return constants no longer return NIL
4308 after the first few invocations. (thanks to Gerd Moellmann)
4309 ** CALL-NEXT-METHOD with no arguments now passes the original
4310 values of the arguments, even in the presence of assignment.
4311 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4313 ** DISASSEMBLE works with closures and funcallable instances.
4314 ** ADD-METHOD now returns the generic function, not the new method.
4315 ** FIND-METHOD signals an error if the lengths of the specializers
4316 is incompatible with the generic function, even if the ERRORP
4318 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4319 which its argument is a member.
4320 ** DEFCLASS only redefines the class named by its class-name
4321 argument if that name is the proper name of the class;
4322 otherwise, it creates a new class.
4323 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4324 of the UNBOUND-SLOT condition to the name of the slot.
4325 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4326 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4327 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4328 SLOT-MAKUNBOUND in the specified fashion.
4330 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4331 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4332 cross-compilation host. As a consequence, we can now bootstrap our
4333 way up to SBCL starting with a bare gcc toolchain and human-readable
4334 source code (first the source to CLISP, then the source to SBCL).
4335 * A contributed module containing a partial implementation of the
4336 simple-streams interface has been included. (thanks to Rudi
4338 * A contributed module implementing the RFC1321 Message Digest
4339 Algorithm, known as MD5, has been included.
4340 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4341 no longer has any effect, as the code controlled by this feature
4342 has been deleted. (As far as we know, no-one has ever built using
4343 this feature, and its semantics were confused in any case).
4344 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4345 work on conditions (as required by the ANSI specification),
4346 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4347 expected behaviour on conditions. Users should note, however,
4348 that such behaviour is not required by the ANSI specification,
4349 and so use of this behaviour may render their code unportable.
4350 * fixed some bugs revealed by Paul Dietz' test suite:
4351 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4353 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4354 ** SXHASH on condition objects no longer returns NIL.
4355 ** :ALLOCATION :CLASS slots are better treated; their values are
4356 updated on class redefinition, and initforms inherited from
4357 superclasses are applied.
4358 ** REMOVE-METHOD returns its generic function argument even when
4359 no method was removed.
4360 ** SHARED-INITIALIZE now initializes the values of the requested
4361 slots, including those with :ALLOCATION :CLASS.
4362 ** ALLOCATE-INSTANCE now works on structure classes defined via
4363 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4365 ** SLOT-EXISTS-P now works on conditions, as well as structures
4367 ** MAKE-LOAD-FORM now has the required methods on
4368 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4369 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4370 keyword, and now implements the SLOT-NAMES argument.
4371 ** methods with &OPTIONAL arguments no longer allow too many
4372 arguments to be passed in the call without error.
4373 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4374 option is consistent with the required arguments of the generic
4375 function lambda list.
4376 * bug fix: REQUIRE accepts a string designator. (Thanks to
4378 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4379 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4380 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4381 * bug fix: The compiler now checks for duplicated variables in macro
4383 * bug fix: SETQ on globals returns the correct value.
4384 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4385 not a COMPILER-ERROR (followed by some other strange error on
4386 choosing the CONTINUE restart).
4387 * bug fix: make.sh and friends are now more consistent in the way that
4388 they look for GNU "make".
4390 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4391 * experimental native threads support (on x86 Linux >=2.4 only).
4392 This is not compiled in by default: you need to add :SB-THREAD to
4393 the target features. See the "Beyond ANSI" chapter of the manual
4395 * fix for longstanding nonANSIism: The old distinction between
4396 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4397 The return value from CL:FIND-CLASS is now a CLOS class, and
4398 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4399 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4400 * An interface to the MetaObject Protocol, as described in Kiczales,
4401 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4402 MIT Press, 1991, is available from the SB-MOP package.
4403 * incompatible change: the SB-PCL package should now be considered
4404 a private implementation detail, and no longer a semi-private MOP
4406 * minor incompatible change: due to rearrangement for threads, the
4407 control stack and binding stack are now allocated at arbitrary
4408 addresses instead of being hardcoded per-port. Users affected by
4409 this probably have to be doing advanced things with shared
4410 libraries, and will know who they are.
4411 * minor incompatible change: Previously, all --eval forms used were
4412 processed with READ before any of them were processed with EVAL.
4413 Now each --eval form is processed with both READ and EVAL before
4414 the next --eval form is processed. (Thus package operations like
4415 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4416 work as the user might reasonably expect.)
4417 * minor incompatible change: *STANDARD-INPUT* is now only an
4418 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4420 * minor incompatible change: Y-OR-N-P is now character-oriented,
4421 not line oriented. Also, YES-OR-NO-P now works without errors.
4422 (thanks to Antonio Martinez)
4423 * sb-aclrepl module improvements: an integrated inspector, added
4424 repl features, and a bug fix to :trace command.
4425 * Known functions, which cannot be open coded by the backend, are
4426 considered to be able to check types of their arguments. (fixing
4427 a bug report by Nathan J. Froyd)
4428 * fixed a bug in computing method discriminating functions: It is
4429 now possible to define methods specialized on classes which have
4430 forward-referenced superclasses. (thanks to Gerd Moellmann)
4431 * fixed evaluation order in optional entries (reported by Gilbert
4433 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4434 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4435 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4436 required-by-AMOP NAME argument, as well as CLASS and
4437 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4438 * fixed bug 20: DEFMETHOD can define methods using names that are
4439 not the proper names of classes to designate class specializers.
4440 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4441 Unix file descriptors, instead of blowing up. (thanks to Antonio
4443 * Garbage collection refactoring: user-visible change is that a
4444 call to the GC function during WITHOUT-GCING will not do garbage
4445 collection until the end of the WITHOUT-GCING. If you were doing
4446 this you were probably losing anyway.
4447 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4448 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4449 TYPEP the latter but not the former.
4450 * The compiler issues a full WARNING for calls to undefined functions
4451 with names from the CL package.
4452 * MAP-INTO for a vector destination is open coded. (reported by
4453 Brian Downing on c.l.l)
4454 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4455 documentation string.
4456 * fixed some bugs revealed by Paul Dietz' test suite:
4457 ** COPY-ALIST now signals an error if its argument is a dotted
4459 ** Condition slots are now accessed more correctly in the presence
4460 of multiple initargs for a given slot.
4461 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4462 exclude restarts of the same name associated with a different
4464 ** DEFCLASS of forward-referenced classes with another
4465 forward-referenced class in the superclasses list no longer
4467 ** Condition slots are now initialized once each, not multiple
4468 times. (thanks to Gerd Moellmann)
4469 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4471 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4472 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4473 arguments contain duplicated elements.
4474 ** RESTART-CASE understands local macros.
4475 ** RESTART-CASE associates exactly its own restarts with a condition.
4476 ** ENDP in safe mode checks its argument to be of type LIST.
4477 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4478 in question is unbound.
4479 ** Optimized MAKE-INSTANCE functions no longer cause internal
4480 assertion failures in the presence of duplicate initargs.
4481 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4482 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4483 propagated even in the ctor optimized implementation of
4485 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4487 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4488 * a better implementation of SXHASH on (simple) bit vectors,
4489 measured both in execution speed and in distribution of results
4490 over the positive fixnums, has been installed. Likewise, a better
4491 implementation of EQUAL for simple bit vectors is now available.
4492 * fixed CEILING optimization for a divisor of form 2^k.
4493 * fixed bug 240 (emitting extra style warnings "using the lexical
4494 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4495 by Antonio Martinez)
4496 * fixed SXHASH, giving different results for NIL depending on type
4497 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4498 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4499 variable. (found by Rolf Wester)
4500 * SBCL does not ignore type declarations for special
4501 variables. (reported by rif on c.l.l 2003-03-05)
4502 * some bug fixes in contrib/sb-aclrepl/
4503 * fixed some bugs revealed by Paul Dietz' test suite:
4504 ** a bug in the CONS type specifier, whereby the CAR and CDR
4505 types got intertwined, has been fixed;
4506 ** the type system is now able to reason about the interaction
4507 between INTEGER and RATIO types more completely;
4508 ** APPEND, [N]REVERSE and NRECONC check that those their
4509 arguments, which must be proper lists, are really so;
4510 ** An array specialized to be unable to hold elements has been
4511 implemented, as required -- yes, really -- by ANSI;
4512 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4513 on malformed property lists;
4515 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4516 * incompatible packaging change: in line with Unix convention,
4517 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4518 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4519 * REQUIRE and PROVIDE are now optionally capable of doing something
4520 useful. See the documentation string for REQUIRE.
4521 * infrastructure for a managed SBCL contrib system: contributed
4522 modules in this release include:
4523 ** the ASDF system definition facility;
4524 ** an interface to the BSD Sockets API;
4525 ** an ACL-like convenience interface to the repl;
4526 (thanks to Kevin Rosenberg)
4527 ** an implementation of ROTATE-BYTE, with efficient implementation
4529 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4530 gives a closer approximation to the right answer than previously.
4531 (thanks to Raymond Toy)
4532 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4533 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4534 optional environment arguments, as required by ANSI.
4535 * fixed bugs in other functions taking environment objects, allowing
4536 calls with an explicit NIL environment argument to be compiled
4538 * fixed bug 228: primary return values from
4539 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4540 COMPILE or FUNCTION.
4541 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4542 :TYPE will no longer signal errors on innocuous objects.
4543 * fixed bug 231b: SETQ is better at respecting type declarations in
4544 the lexical environment.
4545 * fixed a bug in DEFCLASS: classes named by symbols with no or
4546 unprintable packages can now be defined.
4547 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4548 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4549 * fixed compiler failure related to checking types of functions.
4550 (reported by Robert E. Brown)
4551 * the compiler is now much more consistent in its error-checking
4552 treatment of bounding index arguments to sequence functions: in
4553 (SAFETY 3) code, errors will be signalled in almost all cases if
4554 invalid sequence bounding indices are passed to functions defined
4555 by ANSI to operate on sequences.
4556 * fixed a bug in the build procedure: documentation of SBCL-specific
4557 packages is now preserved and available in the final Lisp image.
4558 * lifted FDEFINITION lookup out of loops in the implementation of
4559 many list operations. (thanks to Robert E. Brown)
4560 * fixed a bug in the reader: the #n# reader macro now works for
4561 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4562 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4563 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4564 E. Brown and Tony Martinez respectively)
4565 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4566 SLOT-BOUNDP: in particular, it is now able to optimize them much
4567 better, and is now not vulnerable to having packages renamed.
4568 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4569 always called when a slot is not present in an instance. (thanks
4571 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4572 longer signal an error on unreading a character following EOF on
4573 the previous constituent stream. (thanks to Tony Martinez)
4574 * fixed some bugs revealed by Paul Dietz' test suite:
4575 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4576 not just nonnegative fixnums;
4577 ** the logical bit-array operators such as BIT-AND now accept an
4578 explicit NIL for their "opt-arg" argument (to indicate a
4579 freshly-consed result bit-array);
4580 ** ELT now signals an error on an invalid sequence index in safe
4582 ** the type system is now cleverer about negations of numeric
4583 types, and consequently understands the BIGNUM and RATIO types
4585 ** the type system is now cleverer about the interaction between
4586 INTEGER and RATIO types: while bugs still remain, many more
4587 cases are accurately computed;
4588 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4589 if it is in the last clause;
4590 ** CONSTANTLY now correctly returns a side-effect-free function in
4592 ** DECLARE is no longer treated as a special-operator; in
4593 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4594 * incremented fasl file version number due to the change in the
4595 DEFSTRUCT-SLOT-DESCRIPTION structure.
4597 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4598 * minor incompatible change: code processed by the "interpreter" or
4599 EVAL now has a compilation optimization policy of (DEBUG 2)
4600 (changed from (DEBUG 1)) to improve debuggability of interactive
4601 development, and to allow the use of the debug RETURN command in
4603 * an experimental implementation of the RETURN command for the
4604 debugger has been included. (thanks to Frederik Kuivinen)
4605 * fixed bug 62: constraints were not propagated into a loop.
4606 * fixed bug in embedded calls of SORT (reported and investigated by
4608 * fixed some bugs revealed by Paul Dietz' test suite:
4609 ** printing and reading of arrays with some dimensions having
4610 length 0 (thanks to Gerd Moellmann);
4611 ** BOA constructor with &AUX argument without a default value does
4612 not cause a type error;
4613 ** CONSTANTP now returns true for all self-evaluating objects.
4615 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4616 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4617 accessors that are related by inheritance, as specified in the
4618 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4619 Valtteri Vuorikoski)
4620 * The compiler is now able to inline functions that were defined in
4621 a complex lexical environment (e.g. inside a MACROLET).
4622 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4624 * Support for the upcoming FreeBSD-5.0 release has been included.
4625 (thanks to Dag-Erling Smorgrav)
4626 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4627 effect when it is not in a toplevel context.
4628 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4629 stand a better chance of being correct. (thanks to Gerd
4631 * fixed bug in COERCE, which now signals an error on coercing a
4632 rational to a bounded real type which excludes the expected
4634 * The compiler is now able to derive types more accurately from the
4635 COERCE and COMPILE functions.
4636 * fixed bug 223: functional binding is considered to be constant
4637 only for symbols in the CL package.
4638 * fixed bug 231: SETQ did not check the type of a variable being set
4639 (reported by Robert E. Brown)
4640 * A new optimization for MAKE-INSTANCE has been included, fixing
4641 various bugs (including relating to :ALLOCATION :CLASS slots and
4642 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4644 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4645 ** As required by ANSI, LOOP now disallows anonymous collection
4646 clauses such as COLLECT I in conjunction with aggregate boolean
4647 clauses such as THEREIS (= I 1);
4648 ** LOOP now signals an error when any variable is reused in the
4649 same loop (including the potentially useful construct analogous
4650 to WITH A = 1 WITH A = (1+ A);
4651 ** IT is only a special loop symbol within the first clause of a
4652 conditional loop clause;
4653 ** LOOP with a typed iteration variable over a hashtable now
4654 signals a type error iff it should.
4655 * fixed some other bugs revealed by Paul Dietz' test suite:
4656 ** FILE-STREAM now names the class previously known as FD-STREAM;
4657 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4658 argument) no longer signals an error;
4659 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4660 of the slot symbol, rather than using the current package
4661 ((:CONC-NAME "") continues to intern the slot's name in the
4663 * incremented fasl file version number, because of the incompatible
4664 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4665 of the new implementation of DEFINE-COMPILER-MACRO.
4667 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4668 * Support for building SBCL for MIPS platforms running in
4669 little-endian mode has now been checked in, and basic
4670 functionality on said platforms verified.
4671 * minor incompatible change: PCL now records the pathname of a file
4672 in which methods and the like are defined, rather than its
4674 * minor incompatible change: TRUENAME now considers the truename of
4675 a file naming a directory to be the pathname with :DIRECTORY
4676 component indicating that directory.
4677 * minor incompatible change: a NAMED clause in the extended form of
4678 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4679 reason for the previous behaviour is unclear.
4680 * more systematization and improvement of CLOS and MOP conformance
4681 in PCL (thanks to Gerd Moellman and Pierre Mai):
4682 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4684 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4685 primary methods with no specializers;
4686 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4688 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4689 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4690 FORWARD-REFERENCED-CLASSes; error reporting on
4691 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4693 ** SXHASH on CLOS instances now uses a slot internal to the
4694 instance to return different numbers on distinct instances,
4695 while preserving the same return value through invocations of
4697 ** DEFMETHOD signals errors when methods with longer incongruent
4698 lambda lists are added to generic functions;
4699 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4700 CLASS, as specified in AMOP;
4701 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4702 on the order returned by the primary method for classes of
4703 class STANDARD-CLASS;
4704 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4705 * fixed some bugs shown by Paul Dietz' test suite:
4706 ** DOLIST puts its body in TAGBODY;
4707 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4709 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4710 value producing form;
4711 ** if more variables are given to PROGV than values, extra
4712 variables are bound and made to have no value;
4713 ** NSUBSTITUTE on list arguments gets the right answer with
4715 ** ELT signals an error of type TYPE-ERROR when the index argument
4716 is not a valid sequence index;
4717 ** LOOP signals (at macroexpansion time) an error of type
4718 PROGRAM-ERROR when duplicate variable names are found;
4719 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4720 ** FUNCALL of special-operators now cause an error of type
4722 ** PSETQ now works as required in the presence of side-effecting
4723 symbol-macro places;
4724 ** NCONC accepts any object as its last argument;
4725 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4727 ** loop-for-as-package does not require a package to be explicitely
4729 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4731 * fixed bug 166: compiler preserves "there is a way to go"
4732 invariant when deleting code.
4733 * fixed bug 172: macro lambda lists with required arguments after
4734 &REST arguments now cause an error to be signalled. (thanks to
4736 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4737 bug. (thanks to Matthew Danish)
4738 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4740 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4741 arguments are lexically rebound. (thanks to Gerd Moellmann and
4743 * fixed bug 194: error messages are now more informative when there
4744 is no primary method applicable in a call to a generic
4745 function. (thanks to Gerd Moellmann)
4746 * fixed bug in command line argument checking (thanks to Julian
4748 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4749 (thanks to Matthew Danish)
4750 * incremented fasl file version number, because of the
4751 SXHASH-related changes in the layout of CLOS data structures
4753 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4754 * minor incompatible change: The runtime (the Unix executable named
4755 "sbcl") is now much pickier about the .core files it will load.
4756 Essentially it now requires .core files to descend from the same
4757 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4758 as the runtime does. (The intent is to prevent the crashes which
4759 can occur, and which can even be reported as mysterious failures,
4760 when people patch the sources or change the build parameters
4761 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4762 sbcl and .core files.)
4763 * fixed bug: VALUES-LIST is no longer optimized away.
4764 * fixed bug 142: The FFI conversion of C string values to Lisp
4765 string values no longer conses excessively. (thanks to Nathan
4766 Froyd porting Raymond Toy's fix to CMU CL)
4767 * began to systematize and improve MOP conformance in PCL (thanks to
4768 Nathan Froyd, Gerd Moellman and Pierre Mai):
4769 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4771 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4772 ** FINALIZE-INHERITANCE is now called on class finalization;
4773 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4774 argument precedence order.
4775 * fixed bug 202: The compiler no longer fails on functions whose
4776 derived types contradict their declared type.
4777 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4778 so it can be non-toplevel.
4779 * The fasl file version number has changed (because of the new
4780 implementation of DEFMACRO).
4781 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4782 safe code, that any length requirement by their type-specifier
4783 argument is valid. The exceptions to this are described in bug
4785 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4786 functions now check the types of their inputs as required by ANSI.
4787 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4788 introduced symbol is DECLAREd to be SPECIAL.
4789 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4790 * fixed bug: :COUNT argument to sequence functions may be negative
4791 * fixed bug: body of DO-SYMBOLS may contain declarations
4792 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4793 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4794 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4795 symbol macro only once
4796 * fixed printing of call frame when argument list is unavailable
4797 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4798 * compiler no longer signals WARNING on unknown keyword
4801 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4802 * A beta-quality port to the mips architecture running Linux,
4803 based on the old CMUCL backend, has been made. It has been tested
4804 on a big-endian kernel, and works sufficiently well to be able to
4805 rebuild itself; it has not been tested in little-endian mode.
4806 * fixed an inconsistency between gencgc.c and purify.c which made
4807 dumping/loading .core files unreliable
4808 * fixed bug 120a: The compiler now deals correctly with IFs where
4809 the consequent is the same as the alternative, instead of
4810 misderiving the return type. (thanks to Alexey Dejneka)
4811 * fixed bug 113: Logical pathnames are now dumpable (the logical
4812 host is resolved at load-time, throwing an error if it is not
4814 * fixed bug 174: FORMAT's error message is slightly clearer when a
4815 non-printing character is used in a format directive.
4816 * fixed several bugs in compiler checking of type declarations, i.e.
4817 violations of the Python "declarations are assertions" principle
4818 (thanks to Alexey Dejneka)
4819 * fixed several bugs in PCL's error checking (thanks to Gerd
4821 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4823 * fixed bug in compilation of functions as first class values
4824 (thanks to Antonio Martinez-Shotton)
4825 * The compiler's handling TYPE-ERRORs which it can prove will
4826 inevitably happen at runtime has been cleaned up and corrected
4827 in several ways. (thanks to Alexey Dejneka)
4828 * improved argument type checking for various basic arithmetic
4829 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4830 lavished on them in the past that they can be compiled in many
4831 ways in different special cases
4832 * fixed bug 181: compiler checks validity of user supplied type
4834 * cleaned up code flushing in optimization: Function calls which
4835 should signal errors for safety purposes (e.g. which ANSI says
4836 should signal errors when their arguments are of incorrect type)
4837 are no longer optimized away.
4838 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4839 * incremented fasl file version number, because changes in the
4840 implementation of sequence functions like COERCE caused
4841 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4842 in old inline expansions) to become undefined. (Actually these
4843 changes were later undone, so we might very well be binary
4844 compatible with 0.7.7 after all, but leaving the version number
4845 incremented seemed like the simplest and most conservative
4848 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4849 * An alpha-quality port to the parisc architecture running Linux,
4850 based on the old CMUCL backend, has been made. This, even more so
4851 than the other backends, should be considered still a work in
4852 progress; known problems include that the Linux kernel in 64-bit
4853 mode does not propagate the correct sigcontext structure to
4854 userspace, and consequently SBCL on a parisc64 kernel will not
4856 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4857 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4858 suppressed.) Also now that the compiler is looking at declarations
4859 in the environment, it checks optimization declarations as well,
4860 and suppresses inlining when (> DEBUG SPEED).
4861 * More fixes have been made to treatment of floating point exception
4862 treatment and other Unix signals. In particular, floating point
4863 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4864 * The detection and handling of control stack exhaustion (infinite
4865 or very deeply nested recursion) has changed. Stack exhaustion
4866 detection is now done by write-protecting pages at the OS level
4867 and applies at all optimization settings; when found, a
4868 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4869 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4870 be caught using IGNORE-ERRORS.
4871 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4872 correctly when transforming recursive LABELS functions to LETs.
4873 (thanks to Alexey Dejneka)
4874 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4875 that are names of constants or global variables.
4876 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4877 alien routines with docstrings.
4878 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4879 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4881 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4882 (thanks to Eric Marsden)
4883 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4884 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4885 * Bug fix: The SPARC backend can now compile functions involving
4886 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4887 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4888 to a functions expecting a PATHNAME-DESIGNATOR.
4889 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4890 lambda lists. (thanks to Alexey Dejneka)
4891 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4892 functions so that EXPORTing the name of the class doesn't cause
4893 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4894 to Antonio Martinez for reporting this)
4895 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4896 constant-folded without failing an assertion. (thanks to Einar
4897 Floystad Dorum for reporting this)
4898 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4899 types are now dealt with more correctly by the compiler.
4900 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4901 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4902 behaviour analogous to RENAME-FILE. This puts its behaviour more
4903 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4905 * The fasl file version number has changed again. (because of the
4906 bug fix involving the names of PCL MAKE-INSTANCE functions)
4908 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4909 * bug fix: Floating point exceptions are treated much more
4910 consistently on the x86/Linux and PPC/Linux platforms.
4911 * Array initialization with :INITIAL-ELEMENT is now much faster for
4912 cases when the compiler cannot open code the array creation, but
4913 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4914 array accesses have also seen a speed increase.
4915 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4916 specified. (This was at the root of some bad interactions between
4917 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4919 * bug fix: Internal error arguments for undefined functions are now
4920 computed correctly on the PPC/Linux platform.
4921 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4922 Raymond Toy's patch for CMU CL)
4923 * Support for the Solaris 9 operating environment has been included
4924 (thanks to Daniel Merritt)
4925 * A very ugly but hopefully complete draft of the missing FFI chapter
4926 of the manual has been created by reformatting the corresponding
4927 CMU CL manual chapter into (currently very ugly and incoherent)
4928 DocBook and bringing it up to date for SBCL behavior. Thus, the
4929 manual is now essentially complete, at least by my extreme
4930 once-and-only-once standards, whereby it's acceptable to refer to
4931 the doc strings of SB-EXT functions as the primary documentation.
4932 * The fasl file version number has changed again, due to cleanup of
4933 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4934 is no longer a static symbol.)
4936 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4937 * SBCL now builds with OpenMCL (version 0.12) as the
4938 cross-compilation host; also, more progress has been made toward
4939 bootstrapping under CLISP.
4940 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4942 * bug 158 fixed: The compiler can now deal with integer loop
4943 increments different from 1; fixing this turned out also to fix
4945 * bug 169 fixed: no more bogus warnings about using lexical bindings
4946 despite the presence of perfectly good SPECIAL declarations (thanks
4947 to David Lichteblau)
4948 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4949 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4950 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4952 * bug 180 fixed: Method combination specifications no longer ignore
4953 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4954 * bug fix: Structure type predicate functions now check their argument
4955 count as they should.
4956 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4957 correctly. (thanks to Pierre Mai)
4958 * minor incompatible change: The --noprogrammer option is deprecated
4959 in favor of the new --disable-debugger option, which is very similar.
4960 (The major difference is that it takes effect at a slightly different
4961 time at startup, causing handling of errors in --sysinit and
4962 --userinit files will be affected differently.) The
4963 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4964 been added to allow this functionality to be controlled from ordinary
4965 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4966 maintainers, who might want to run non-interactive scripts to
4967 build SBCL cores which will later be used interactively.)
4968 * minor incompatible change: The LOAD function no longer, when given
4969 a wild pathname to load, loads all files matching that pathname.
4970 Instead, an error of type FILE-ERROR is signalled.
4972 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4973 * bug 147 fixed: The compiler preserves its block link/count
4974 invariants more correctly now so that it doesn't crash. (thanks
4976 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4978 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4979 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4980 no-value-for-this-character as NIL (as specified by ANSI).
4981 * HOST-NAMESTRING on physical pathnames now returns a string that is
4982 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4983 (thanks to Christophe Rhodes)
4984 * The Alpha port handles icache flushing more correctly. (thanks to
4986 * More progress has been made toward bootstrapping under CLISP. (thanks
4987 to Christophe Rhodes)
4988 * The fasl file format has changed again, because dynamic loading
4989 on OpenBSD (which has non-ELF object files) motivated some cleanups
4990 in the way that foreign symbols are transformed and passed around.
4991 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4992 is no longer treated as whitespace by the reader, but instead as
4993 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4994 |A
\7fB|, instead of A as it used to.
4996 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4997 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4998 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4999 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5000 this as of 0.7.1.45, but was left out of the previous news section
5001 (thanks to Dan Barlow)
5002 * SBCL now runs on the Solaris operating system on SPARC architectures
5003 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5004 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5005 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5006 * SPARC backend cleanups, allowing builds of cores optimized for V8
5007 and V9 SPARCS, and also emission of code targeted to a particular
5008 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5010 * SBCL is closer to bootstrapping under CLISP, thanks to various
5011 fixes by Christophe Rhodes.
5012 * The fasl file format has changed again, to allow the compiler's
5013 INFO database to support symbol macros.
5014 * The user manual (in doc/) is formatted into HTML more nicely.
5015 (thanks to coreythomas)
5016 * The system is smarter about SUBTYPEP relationships, especially
5017 those involving NOT types (including types such as ATOM which are
5018 represented internally using NOT types). Thus SUBTYPEP is less
5019 likely to return (VALUES NIL NIL) in general, and in particular
5020 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5022 * The fasl file format has changed again, because the internal
5023 representation of types now includes a new slot to support the new
5024 SUBTYPEP-of-NOT-types logic.
5025 * (not a change in the main branch of SBCL, but a related prototype
5026 which can hopefully be merged into the main branch of SBCL in the
5027 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5028 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5029 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5030 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5031 dispatch macro character combinations. (thanks to Alexey Dejneka)
5032 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5033 that superficially look like logical namestrings correctly.
5034 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5036 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5037 default supplied-p) for &optional and &key arguments. (thanks to
5040 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5041 * incompatible change: The compiler is now less aggressive about
5042 tail call optimization, doing it only when (> SPACE DEBUG) or
5043 (> SPEED DEBUG). (This is an incompatible change because there are
5044 programs which relied on the old CMU-CL-style behavior to optimize
5045 away their unbounded recursion which will now die of stack overflow.)
5046 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5047 for non-GENCGC systems has been increased to 20M (since that
5048 seems much closer to the likely performance optimum for modern
5049 systems than the old 4M value was)
5050 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5051 and *DEBUG-PRINT-LEVEL*
5052 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5053 of CMU CL's support for SPARC, and various endianness and other
5054 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5055 * new syntactic sugar for the Unix command line: --load foo.bar is now
5056 an alternate notation for --eval '(load "foo.bar")'.
5058 ** The system now detects stack overflow and handles it gracefully,
5059 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5060 optimization settings. (This is a good thing in general, and
5061 its introduction in this version should be particularly timely
5062 for anyone whose code fails because of suppression of tail
5064 ** The system now hunts for the C variable "environ" in a more
5065 devious way, to avoid segfaults when the C library version differs
5066 between compile time and run time. (thanks to Christophe Rhodes)
5067 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5068 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5069 ** The compiler no longer issues bogus style warnings for undefined
5070 classes in the same source file as the DEFCLASSes which defined
5071 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5073 ** fixes in CONDITION class precedence list for undefined function
5074 errors (thanks to Alexei Dejneka)
5075 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5076 correctly. (thanks to Dan Barlow)
5077 ** portability fixes aiming at bootstrapping under CLISP (thanks
5078 to Dave McDonald and Christophe Rhodes)
5079 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5080 ** fixes in type translation and and type inference (thanks to
5082 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5083 ** various fixes in the new ports (thanks to Dan Barlow)
5084 * several changes related to debugging:
5085 ** suppression of tail recursion, as noted above
5086 ** stack overflow detection, as noted above
5087 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5088 is now the default. (For some time encapsulation has been more
5089 reliable than the breakpoint-based :ENCAPSULATE NIL
5090 implementation, at least on X86 systems; and I just noticed that
5091 encapsulation also seems closer to the spirit of the ANSI
5094 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5096 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5097 up properly again. (There was a packaging bug in 0.7.0 which
5098 left their definitions in SB-SYS::LOAD-FOREIGN and
5099 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5100 vital for most things which interface to C-level interfaces,
5101 like extensions working with sockets or databases or
5102 Perl-compatible regexes or whatever, and the need to fix
5103 this bug is the main reason that 0.7.1 was released so
5105 ** DEFGENERIC is now choosier about the methods it redefines, so that
5106 reLOADing a previously-LOADed file containing DEFGENERICs does
5107 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5108 cycle now works as it should. (thanks to Alexey Dejneka)
5109 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5110 fixed by Christophe Rhodes. (He actually submitted this patch
5111 months ago, and I delayed until after 0.7.0.)
5112 ** Bug 111 (internal compiler confusion about runtime checks on
5113 FUNCTION types) was fixed by Alexey Dejneka.
5114 * Some internal cleanups (getting rid of variables which aren't
5115 needed now that the byte interpreter is gone) caused the fasl
5116 file format number to change again.
5118 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5119 * major incompatible change: The default fasl file extension, i.e. the
5120 default extension for files produced by COMPILE-FILE, has changed
5121 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5123 ** There are many changes in the implementation of the compiler.
5124 SBCL is now essentially a compiler-only implementation of ANSI
5125 Common Lisp. EVAL still "interprets" a few special cases, but
5126 almost all the interesting cases are handled by creating
5127 a LAMBDA expression, calling COMPILE on it, then calling
5128 FUNCALL on the result.
5129 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5130 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5131 Since the code is newer, there might still be some new bugs
5132 (though not as many as before Martin Atzmueller's fixes:-). But
5133 the new code is substantially simpler and clearer, and hopefully
5134 any remaining bugs will be simpler, less fundamental, and more
5135 fixable then the bugs in the old code.
5136 ** The revised compiler is still a little unsteady on its feet.
5138 *** The debugging information it produces (particularly the names
5139 of FUNCTION objects) is sometimes much less useful than what
5140 the old compiler produced.
5141 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5142 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5143 within a MACROLET) has been temporarily weakened.
5144 ** There are new compiler optimizations for various functions:
5145 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5146 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5147 *** the math functions TRUNCATE, FLOOR, and CEILING
5148 *** the function-of-all-trades COERCE
5149 Mostly these should be transparent, but there's one
5150 potentially-annoying problem (bug 117): when the compiler
5151 inline-expands a function and does type analysis on the result,
5152 it can create control paths which have type mismatches, and
5153 when it can't prove that those control paths aren't taken,
5154 it will issue WARNINGs about the type mismatches. This is
5155 a particular problem in practice for the new sequence functions.
5156 It's not clear how this should be fixed, and for now, a
5157 workaround is given in the entry for 117 in the BUGS file.
5158 ** (Because of the interaction between the two previous items --
5159 occasional inlining problems and new inline expansions -- some
5160 of the new sequence function optimizations won't really kick in
5161 completely until debugging information, and then inlining, are
5162 straightened out in some future version.)
5163 * minor incompatible changes:
5164 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5165 DIRECTORY no longer implicitly promotes NIL slots of its
5166 pathname argument to :WILD. In particular, when you ask for the
5167 contents of a directory (which you used to be able to do without
5168 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5169 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5170 ** changes in behavior that ANSI explicitly defines to be
5171 implementation dependent:
5172 *** The new compiler-only implementation still conforms with ANSI,
5173 but acts a little different than before. Besides the obvious
5174 changes in performance tradeoffs (that the cost per form passed
5175 to EVAL has gone up, and the cost per form executed by EVAL
5176 has gone down), the behavior of the system changes a little
5177 because there are no longer any interpreted function objects.
5178 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5179 e.g. doing COMPILE on the output of interactive DEFUN is
5181 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5183 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5184 has changed from (:CL) to NIL.
5185 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5186 e.g. #\Newline and #\Tab, don't have names specified in the
5187 ANSI Common Lisp standard, is now based on their ASCII symbolic
5188 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5189 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5190 are no longer used for output.
5191 ** changes in internal implementation constants:
5192 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5193 4 million. (If your application spends a lot of time GCing and
5194 you have a lot of RAM, you might want to experiment with
5195 increasing it even more.)
5196 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5197 However, almost all old code should still continue to work without
5198 immediate update, as SB-C-CALL is now a (deprecated) nickname
5200 ** Old operator names in the style DEF-FOO are now deprecated in
5201 favor of new corresponding names DEFINE-FOO, for consistency with
5202 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5203 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5204 internal symbols, but a few supported extensions like
5205 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5206 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5207 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5208 etc. as you get deeper into recursive calls to the debugger
5209 command loop, instead of the old "5]", "5]]", "5]]]"
5210 sequence. (I was motivated to do this when squabbles between
5211 ILISP and SBCL left me very deeply nested in the debugger. In the
5212 short term, this change will probably provoke more ILISP/SBCL
5213 squabbles, but hopefully it will be an improvement in the long run.)
5214 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5215 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5216 function, since declaiming return types involving aliens is
5217 (1) annoyingly messy to do by hand and (2) vital to efficient
5218 compilation of code which calls such functions.
5219 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5220 longer reexported by the SB-EXT package. They're solely useful
5221 for alien code, so it seems more logical that you should get
5222 them from the SB-ALIEN package, not in SB-EXT.
5223 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5224 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5225 features. Instead, the code that they used to control is always
5226 built into the system.
5227 * many other bug fixes
5228 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5229 advantage of the new EVAL-WHEN stuff and to clean them up in
5230 general, and they are now more ANSI-compliant in a number of
5231 ways. Martin Atzmueller is responsible for a lot of this.
5232 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5234 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5235 *** correct ERROR type for various file operations
5236 *** some fixes for Lisp streams
5237 *** DEFMETHOD syntax checking
5238 *** changing old weird representation of debug information as
5239 strings (which, among their other deficiencies, don't transform
5240 correctly when you rename packages, and don't change their
5241 print representation when you change things like *PACKAGE*
5242 and *PRINT-LENGTH*) to symbols and lists of symbols
5243 He also made several improvements and fixed several bugs in DESCRIBE.
5244 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5246 *** misbehavior of WRITE-STRING/WRITE-LINE
5247 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5248 and several other LOOP problems as well
5249 *** DIRECTORY when similar filenames are present
5250 *** DEFGENERIC with :METHOD options
5251 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5252 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5253 *** argument ordering in FIND with :TEST option
5254 *** mishandled package designator argument in APROPOS-LIST
5255 *** various problems in the backquote readmacro
5256 *** a bug in APROPOS
5257 *** probably some others that I'm not describing very well here,
5258 since the CVS log documents them by reference to sbcl-devel
5259 messages, and the SourceForge archives aren't working well.:-(
5260 ** Dan Barlow improved the Alpha port (and is making progress on the
5261 PPC port, for those of you who think different).
5262 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5263 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5264 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5265 continues to work on the SPARC port (for those of you in a position
5266 to look down upon our little PC-compatible boxes from a great height).
5267 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5268 and uses that copy, rather than the current dynamic value, when
5269 it's trying to decide whether to truncate output. Thus e.g.
5270 (let ((*print-lines* 50))
5271 (pprint-logical-block (stream nil)
5273 (let ((*print-lines* 8))
5274 (print (aref possiblybigthings i) stream)))))
5275 should now truncate the logical block only at 50 lines, instead of
5276 often truncating it at 8 lines, as it did before.
5277 * The doc/cmucl/ directory, containing old CMU CL documentation
5278 from the time of the fork, is no longer part of the base system.
5279 SourceForge has shut down its anonymous FTP service, and with it
5280 my original plan for distributing the old CMU CL documentation
5281 there. For now, if you need these files you can download an old
5282 SBCL source release and extract them from it.
5283 * The fasl file version number changed again, for dozens of reasons,
5284 some of which are apparent above.
5286 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5287 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5288 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5289 patch, so that DISASSEMBLE output is much nicer.
5290 * The code in the SB-PROFILE package now seems reasonably stable.
5291 I still haven't decided what the final interface should look like
5292 (I'd like PROFILE to interact cleanly with TRACE, since both
5293 facilities use function encapsulation) but if you have a need
5294 for profiling now, you can probably use it successfully with
5295 the current CMU-CL-style interface.
5296 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5297 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5298 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5299 link now returns the dangling link itself, and for similar
5300 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5301 link itself. (In these cases the old code signalled an error and
5302 looped endlessly, respectively.) Thus, DIRECTORY now works even
5303 in the presence of dangling and cyclic symbolic links.
5304 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5305 is now a supported extension again, since the consensus on
5306 sbcl-devel was that it can be useful for ordinary development
5307 work, not just for debugging SBCL itself.
5308 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5309 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5310 that currently-defined functions might be redefined later with
5311 different return types.
5312 * Hash tables can be printed readably, as inspired by CMU CL code
5313 of Eric Marsden and SBCL code of Martin Atzmueller.
5314 * better error handling in CLOS method combination, thanks to
5315 Martin Atzmueller porting Pierre Mai's CMU CL patches
5316 * more overflow fixes for >16Mbyte I/O buffers
5317 * A bug in READ has been fixed, so that now a single Ctrl-D
5318 character suffices to cause end-of-file on character streams.
5319 In particular, now you only need one Ctrl-D at the command
5320 line (not two) to exit SBCL.
5321 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5323 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5324 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5325 does the right thing.
5326 * The implementation of some type tests, especially for CONDITION
5327 types, is now tidier and maybe faster, due to CMU CL code
5328 originally by Douglas Crosher, ported by Martin Atzmueller.
5329 * Some math functions have been fixed, and there are new
5330 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5331 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5332 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5333 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5334 likely to be built into sbcl-0.7.0.)
5335 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5336 CL, ported to SBCL by Martin Atzmueller)
5337 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5338 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5339 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5340 * There's a new slam.sh hack to shorten the edit/compile/debug
5341 cycle for low-level changes to SBCL itself, and a new
5342 :SB-AFTER-XC-CORE target feature to control the generation of
5343 the after-xc.core file needed by slam.sh.
5344 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5345 COMPILE-FILE is no longer supported, so that now every function
5346 gets an entry point, so that block compilation looks a little
5347 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5348 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5349 returns the number of bytes consed since the system started,
5350 rather than the number consed since the first time the function
5351 was called. (The new definition parallels ANSI functions like
5352 CL:GET-INTERNAL-RUN-TIME.)
5353 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5354 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5355 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5356 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5357 * Fasl file version numbers are now independent of the target CPU,
5358 since historically most system changes which required version
5359 number changes have affected all CPUs equally. Similarly,
5360 the byte fasl file version is now equal to the ordinary
5363 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5364 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5365 is no longer recognized. I apologize for this, because it was
5366 listed in SB-EXT as a supported extension, but I found that
5367 its existing behavior was poorly specified, as well as incorrectly
5368 specified, and it looked like too much of a mess to straighten it
5369 out. I have enough on my hands trying to get ANSI stuff to work..
5370 * many patches ported from CMU CL by Martin Atzmueller, with
5371 half a dozen bug fixes in pretty-printing and the debugger, and
5372 half a dozen others elsewhere
5373 * fixed bug 13: Floating point infinities are now supported again.
5374 They might still be a little bit flaky, but thanks to bug reports
5375 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5376 as flaky as they were.
5377 * The --noprogrammer command line option is now supported. (Its
5378 behavior is slightly different in detail from what the old man
5379 page claimed it would do, but it's still appropriate under the
5380 same circumstances that the man page talks about.)
5381 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5382 are now supported, and enabled by default. Thus, the compiler can
5383 handle many floating point and complex operations much less
5384 inefficiently. (Thus e.g. you can implement a complex FFT
5386 * The compiler now detects type mismatches between DECLAIM FTYPE
5387 and DEFUN better, and implements CHECK-TYPE more correctly, and
5388 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5389 thanks to patches from Martin Atzmueller.
5390 * various fixes to make the cross-compiler more portable to
5391 ANSI-conforming-but-different cross-compilation hosts (notably
5392 Lispworks for Windows, following bug reports from Arthur Lemmens)
5393 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5394 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5395 fixed thanks to Pierre Mai's CMU CL patches.
5396 * fixes to keep the system from overflowing internal counters when
5397 it tries to use i/o buffers larger than 16M bytes
5398 * fixed bug 45a: Various internal functions required to support
5399 complex special functions have been merged from CMU CL sources.
5400 (When I was first setting up SBCL, I misunderstood a compile-time
5401 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5402 * improved support for type intersection and union, fixing bug 12
5403 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5404 more obscure bugs as well
5405 * some steps toward byte-compiling non-performance-critical
5406 parts of the system, courtesy of patches from Martin Atzmueller
5407 * Christophe Rhodes has made some debian packages of sbcl at
5408 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5409 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5410 stable, but are nonetheless usable. When he's ready, I'd be happy
5411 to add them to the SourceForge "File Releases" section. (And if
5412 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5413 * new fasl file format version number (because of changes in
5414 internal representation of (OR ..) types to accommodate the new
5415 support for (AND ..) types, among other things)
5417 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5418 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5420 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5422 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5423 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5424 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5425 * DESCRIBE now works on structure objects again.
5426 * Most function call argument type mismatches are now handled as
5427 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5428 know whether the function will be redefined before the call is
5429 executed. (The compiler could flag local calls with full WARNINGs,
5430 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5431 it doesn't keep track of enough information to know whether calls
5432 are local in this sense.)
5433 * Compiler output is now more verbose, with messages truncated
5434 later than before. (There should be some supported way for users
5435 to override the default verbosity, but I haven't decided how to
5436 provide it yet, so this behavior is still controlled by the internal
5437 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5438 src/compiler/ir1util.lisp.)
5439 * Fasl file format version numbers have increased again, because
5440 support for the Gray streams extension changes the layout of the
5441 system's STREAM objects.
5442 * The Gray subclassable streams extension now works, thanks to a
5443 patch from Martin Atzmueller.
5444 * The full LOAD-FOREIGN extension (not just the primitive
5445 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5446 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5447 but like most other programs, it defaults to copying the Unix
5448 environment from the original process instead of starting the
5449 new process in an empty environment.
5450 * Extensions which manipulate the Unix environment now support
5451 an :ENVIRONMENT keyword option which doesn't smash case or
5452 do other bad things. The CMU-CL-style :ENV option is retained
5453 for porting convenience.
5454 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5455 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5457 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5459 * A patch from Martin Atzmueller seems to have solved the SIGINT
5460 problem, and as far as we know, signal-handling now works cleanly.
5461 (If you find any new bugs, please report them!)
5462 * The system no longer defaults Lisp source file names to types
5463 ".l", ".cl", or ".lsp", but only to ".lisp".
5464 * The compiler no longer uses special default file extensions for
5465 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5466 seems to expect a single default extension for all compiled code,
5467 and there's no compelling reason to try to stretch the standard
5468 to allow two different extensions.) Instead, byte-compiled files
5469 default to the same extension as native-compiled files.
5470 * Fasl file format version numbers have increased again, because
5471 a rearrangement of internal implementation packages made some
5472 dumped symbols in old fasl files unreadable in new cores.
5473 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5474 many fewer weird special cases.
5475 * Bug #17 (differing COMPILE-FILE behavior between logical and
5476 physical pathnames) has been fixed, and some related misbehavior too,
5477 thanks to a patch from Martin Atzmueller.
5478 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5479 by Tim Moore, ported to SBCL by Martin Atzmueller.
5480 * Martin Atzmueller fixed several filesystem-related problems,
5481 including bug #36, in part by porting CMU CL patches, which were
5482 written in part by Paul Werkowski.
5483 * More compiler warnings in src/runtime/ are gone, thanks to
5484 more patches from Martin Atzmueller.
5485 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5488 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5490 * DESCRIBE now works on CONDITION objects.
5491 * The debugger now handles errors which arise when trying to print
5492 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5494 * The build system now uses an additional file, customize-target-features.lisp,
5495 to allow local modifications to the target *FEATURES* list. (The point of
5496 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5497 debugging features enabled, without having to worry about propagating it
5498 into everyone's system when I do a "cvs update".) When no
5499 customize-target-features.lisp file exists, the target *FEATURES* list
5500 should be constructed the same way as before.
5501 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5502 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5503 warn about behavior which is undefined under the ANSI spec. Note: This
5504 is specified by ANSI, but it's not very popular with programmers.
5505 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5506 macro in the SBCL sources for an example of a workaround which you
5507 might use to make portable ANSI-standard code which does what you want.
5508 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5509 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5510 when it's used as a non-toplevel form. (This is required in order
5511 to implement the DEFCONSTANT-EQX macro.)
5512 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5513 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5514 funny things, due to bugs in the implementation of EVAL-WHEN
5515 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5516 non-toplevel DEFCONSTANTs are uncommon.)
5517 * The core file version number and fasl file version number have been
5518 incremented, because the old noncompliant DEFCONSTANT behavior involved
5519 calling functions which no longer exist, and because I also took the
5520 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5521 * fixed bug 1 (error handling before read-eval-print loop starts), and
5522 redid debugger restarts and related debugger commands somewhat while
5524 ** The QUIT debugger command is gone, since it did something
5525 rather different than the SB-EXT:QUIT command, and since it never
5526 worked properly outside the main toplevel read/eval/print loop.
5527 Invoking the new TOPLEVEL restart provides the same functionality.
5528 ** The GO debugger command is also gone, since you can just invoke
5529 the CONTINUE restart directly instead.
5530 ** The TOP debugger command is also gone, since it's redundant with the
5531 FRAME 0 command, and since it interfered with abbreviations for the
5533 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5535 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5536 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5537 some porting work by Martin Atzmueller)
5538 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5539 with a boatload of patches which he ported to SBCL. Now that those
5541 ** The system tries to make sure that its low-priority messages
5542 are prefixed by semicolons, to help people who like to use
5543 syntax highlighting in their ILISP buffer. (This patch
5544 was originally due to Raymond Toy.)
5545 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5546 patches originally written by Raymond Toy.
5547 ** The compiler understands coercion between single-value and
5548 multiple-VALUES type expressions better, getting rid of some very
5549 weird behavior, thanks to patches originally by Robert MacLachlan
5550 and Douglas Crosher.
5551 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5552 lambda lists, thanks to a patch originally by Pierre Mai.
5553 ** The system no longer bogusly warns about "abbreviated type
5555 ** The compiler gets less confused by inlining and RETURN-FROM,
5556 thanks to some patches originally by Tim Moore.
5557 ** The system no longer hangs when dumping circular lists to fasl
5558 files, thanks to a patch originally from Douglas Crosher.
5559 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5560 undefined function error.
5561 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5562 in structure slot initforms) for now, documented workaround instead:-|
5563 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5564 * fixed bug 5: added stubs for various Gray stream functions called
5565 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5566 installed, at least appropriate type errors are generated
5567 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5568 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5569 consistently in DEFMETHOD forms.
5570 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5571 it doesn't seem to affect SBCL after all
5572 * The C runtime system now builds with better optimization and many
5573 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5575 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5577 * The system is now under CVS at SourceForge (instead of the
5578 CVS repository on my home machine).
5579 * The new signal handling code has been tweaked to treat register
5580 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5581 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5582 downstream, e.g. in debug-int.lisp, has implicit dependencies
5583 on the unsignedness of integer representation of machine words,
5584 and that caused the system to bomb out with infinite regress
5585 when trying to recover from type errors involving signed values,
5586 e.g. (BUTLAST '(1 2 3) -1).)
5587 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5588 (This was one of the bugs Peter Van Eynde reported back in July.)
5589 * The system now uses code inspired by Colin Walters' O(N)
5590 implementation of MAP (from the cmucl-imp@cons.org mailing
5591 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5592 inline the MAP operation, and there is more than one
5593 sequence argument to the MAP call (so that it can't just
5594 do ETYPECASE once and for all based on the type of the
5595 single sequence argument). (The old non-inline implementation
5596 of the general M-argument sequence-of-length-N case required
5597 O(M*N*N) time when any of the sequence arguments were LISTs.)
5598 * The QUIT :UNIX-CODE keyword argument has been renamed to
5599 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5600 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5602 * Raymond Wiker's patches to port dynamic loading from Linux to
5603 FreeBSD have been added.
5604 * The BUGS file is now more nearly up to date, thanks in large part
5605 to Martin Atzmueller's review of it.
5606 * The debugger now flushes standard output streams before it begins
5607 its output ("debugger invoked" and so forth).
5608 * The core version number and fasl file version number have both
5609 been incremented, because of incompatible changes in the layout
5611 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5612 used to not be called for a saved Lisp image.)
5613 * Martin Atzmueller's version of a patch to fix a compiler crash,
5614 as posted on sbcl-devel 13 September 2000, has been installed.
5615 * Instead of installing Martin Atzmueller's patch for the
5616 compiler transform for SUBSEQ, I deleted the compiler transform,
5617 and transforms for some similar consing operations.
5618 * A bug in signal handling which kept TRACE from working on OpenBSD
5620 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5621 away by constant folding
5622 * The system now defines its address space constants in one place
5623 (in the Lisp sources), and propagates them automatically elsewhere
5624 (through GENESIS and the sbcl.h file). Therefore, patching the
5625 address map is less unnecessarily tedious and error-prone. The
5626 Lisp names of address space constants have also been systematized.
5627 * CVS tags like dollar-Header-dollar have been removed from
5628 the sources, because they have never saved me trouble and
5629 they've been source of trouble working with patches and other
5630 diff-related operations.
5631 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5632 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5634 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5636 * The system has been ported to OpenBSD.
5637 * The system now compiles with a simple "sh make.sh" on the systems
5638 that it's supported on. I.e., now you no longer need to tweak
5639 text in the target-features.lisp-expr and symlinks in src/runtime/
5640 by hand, the make.sh takes care of it for you.
5641 * The system is no longer so grossly inefficient when compiling code
5642 involving vectors implemented as general (not simple) vectors (VECTOR T),
5643 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5644 which dares to use the various sequence functions on non-simple
5645 vectors, takes less of a performance hit.
5646 * There is now a primitive type predicate VECTOR-T-P
5647 to test for the (VECTOR T) type, so that e.g.
5648 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5649 can now be compiled with some semblance of efficiency. (The old code
5650 turned the type declaration into a full call to %TYPEP at runtime!)
5651 * AREF on (VECTOR T) is still not fast, since it's still compiled
5652 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5653 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5654 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5655 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5656 without making full calls to SUBTYPEP at runtime.
5657 (Some analogous efficiency issues for non-simple vectors specialized to
5658 element types other than T, or for non-simple multidimensional arrays,
5659 have not been addressed. They could almost certainly be handled the
5660 same way if anyone is motivated to do so.)
5661 * The changes in array handling break binary compatibility, so
5662 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5663 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5664 instead of (VALUES T T).
5665 * By following the instructions that Dan Barlow posted to sbcl-devel
5666 on 2 July 2000, I was able to enable primitive dynamic object
5667 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5668 functionality is not implemented (since it calls ld to resolve
5669 library references automatically, requiring RUN-PROGRAM for its
5670 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5671 try to resolve library references) is now supported.
5672 * The system now flushes the standard output streams when it terminates,
5673 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5674 them at several other probably-convenient times, e.g. in each pass of
5675 the toplevel read-eval-print loop, and after evaluating a form given
5676 as an "--eval" command-line option. (These changes were motivated by a
5677 discussion of stream flushing issues on cmucl-imp in August 2000.)
5678 * The source transform for TYPEP of array types no longer assumes
5679 that an array whose element type is a not-yet-defined type
5680 is implemented as an array of T, but instead punts, so that the
5681 type will be interpreted at runtime.
5682 * There is now some support for cross-compiling in make.sh: each of
5683 the phases of make.sh has its own script. (This should be transparent
5684 to people doing ordinary, non-cross-compile builds.)
5685 * Since my laptop doesn't have hundreds of megabytes of memory like
5686 my desktop machine, I became more motivated to do some items on
5687 my to-do list in order to reduce the size of the system a little:
5688 ** Arrange for various needed-only-at-cold-init things to be
5689 uninterned after cold init. To support this, those things have
5690 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5691 symbols with such names are now uninterned after cold init).
5692 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5693 fasl files for cold load.
5694 ** Remove the old compiler structure pooling code (which used to
5695 be conditional on the target feature :SB-ALLOC) completely.
5696 ** Redo the representation of some data in cold init to be more compact.
5697 (I also looked into supporting byte compiled code at bootstrap time,
5698 which would probably reduce the size of the system a lot, but that
5699 looked too complicated, so I punted for now.)
5700 * The maximum signal nesting depth in the src/runtime/ support code has
5701 been reduced from 4096 to 256. (I don't know any reason for the very
5702 large old value. If the new smaller value turns out to break something,
5703 I'll probably just bump it back up.)
5704 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5706 * Many, many bugs reported by Peter Van Eynde have been added to
5707 the BUGS list; some have even been fixed.
5708 * While enabling dynamic object file loading, I tried to make the
5709 code easier to understand, renaming various functions and variables
5710 with less ambiguous names, and changing some function calling
5711 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5712 * While trying to figure out how to do the OpenBSD port, I tried to
5713 clean up some of the code in src/runtime/. In particular, I dropped
5714 support for non-POSIX signal handling, added various comments,
5715 tweaked the code to reduce the number of compilation warnings, and
5716 renamed some files to increase consistency.
5717 * To support the new automatic configuration functionality in make.sh,
5718 the source file target-features.lisp-expr has been replaced with the
5719 source file base-target-features.lisp-expr and the machine-generated
5720 file local-target-features.lisp-expr.
5721 * fixed a stupid quoting error in make.sh so that using CMU CL
5722 "lisp -batch" as cross-compilation host works again
5724 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5726 * DESCRIBE no longer tries to call itself recursively to describe
5727 bound/fbound values, so that it no longer fails on symbols which are
5728 bound to themselves (like keywords, T, and NIL).
5729 * DESCRIBE now works on generic functions.
5730 * The printer now prints less-screwed-up representations of closures
5731 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5732 * A private symbol is used instead of the :EMPTY keyword previously
5733 used to mark empty slots in hash tables. Thus
5734 (DEFVAR *HT* (MAKE-HASH-TABLE))
5735 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5736 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5737 now does what ANSI says that it should. (You can still get
5738 similar noncompliant behavior if bang on the hash table
5739 implementation with all the symbols you get back from
5740 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5741 This breaks binary compatibility, since tests for equality to
5742 :EMPTY are wired into things like the macroexpansion of
5743 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5745 * There's now a minimal placeholder implementation for CL:STEP,
5746 as required by ANSI.
5747 * An obscure bug in the interaction of the normal compiler, the byte
5748 compiler, inlining, and structure predicates has been patched
5749 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5750 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5752 * Missing ordinary arguments in a macro call are now detected even
5753 when the macro lambda list contains &KEY or &REST.
5754 * The debugger no longer complains about encountering the top of the
5755 stack when you type "FRAME 0" to explicitly instruct it to go to
5756 the top of the stack. And it now prints the frame you request even
5757 if it's the current frame (instead of saying "You are here.").
5758 * As specified by ANSI, the system now always prints keywords
5759 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5761 * The default initial SIZE of HASH-TABLEs is now smaller.
5762 * Type information from CLOS class dispatch is now propagated
5763 into DEFMETHOD bodies, so that e.g.
5764 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5766 is now basically equivalent to
5767 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5768 (DECLARE (TYPE SINGLE-FLOAT X))
5770 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5771 operation, without having to do run-time type dispatch.
5772 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5773 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5774 * Since I don't seem to be making big file reorganizations very often
5775 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5776 is overflowing my ability to conveniently back them up), I've finally
5777 checked the system into CVS. (The CVS repository is on my home system,
5778 not at SourceForge -- putting it on SourceForge might come later.)
5779 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5780 high-level GC-NOTIFY-FOO functions send their output. (There's
5781 still very little control of where low-level verbose GC functions
5782 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5783 less than it used to -- the GC-NOTIFY-FOO functions are now under
5784 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5785 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5786 in only one place in the source code, and propagates it automatically
5787 everywhere that it's needed. Thus e.g. when I bump the version from
5788 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5789 * The C source files now include boilerplate legalese and documentation
5790 at the head of each file (just as the Lisp source files already did).
5791 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5792 to his page will be replaced with a link to his new CLiki service.
5794 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5796 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5797 * The build process now looks for GNU make under the default name "gmake",
5798 instead of "make" as it used to. If GNU make is not available as "gmake"
5799 on your system, you can change this default behavior by setting the
5800 GNUMAKE environment variable.
5801 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5802 can build without error under CMU CL.
5804 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5806 * There is now a partial SBCL user manual (with some new text and some
5807 text cribbed from the CMU CL manual).
5808 * The beginnings of a profiler have been added (starting with the
5809 CMU CL profiler and simplifying and cleaning up). Eventually the
5810 main interface should be through the TRACE macro, but for now,
5811 it's still accessed through vaguely CMU-CL-style functions and macros
5812 exported from the package SB-PROFILE.
5813 * Some problems left over from porting CMU CL to the new
5814 cross-compilation bootstrap process have been cleaned up:
5815 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5816 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5817 part when getting rid of the compiler *BACKEND* stuff.)
5818 ** The value of *NULL-TYPE* was screwed up, because it was
5819 being initialized before the type system knew the final
5820 definition of the 'NULL type. This screwed up several key
5821 optimizations in the compiler, causing inefficiency in all sorts
5822 of places. (I found it because I wanted to understand why
5823 GET-INTERNAL-RUN-TIME was consing.)
5824 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5825 PROCLAIM FTYPE information. Unfortunately this broke binary
5826 compatibility again, since now the forms output by DEFGENERIC
5827 to refer to functions which didn't exist in 0.6.3.
5828 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5829 can use the new (as of 0.6.3) transform for SOME into MAP into
5831 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5832 values to (INTEGER 0 1000000), so that the time code will no longer
5833 occasionally get blown up by Linux returning 1000000 microseconds
5834 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5835 its output conform to the ANSI spec. (Alas, this makes its output
5836 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5837 * A full call to MAP NIL with a single sequence argument no longer conses.
5838 * fixes to problems pointed out by Martin Atzmueller:
5839 * The manual page no longer talks about multiprocessing as though
5840 it were currently supported.
5841 * The ILISP support patches have been removed from the distribution,
5842 because as of version 5.10.1, ILISP now supports SBCL without us
5843 having to maintain patches.
5844 * added a modified version of Raymond Toy's recent CMU CL patch for
5845 EQUALP comparison of HASH-TABLE
5847 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5849 * The system still can't cross-compile itself with
5850 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5851 entails), but at least it can compile more of itself that way
5852 than it used to be able to, and various buglets which were uncovered
5853 by trying to cross-compile itself that way have now been fixed.
5854 * This release breaks binary compatibility again. This time
5855 at least I've incremented the FASL file format version to 2, so that the
5856 problem can be detected reliably instead of just causing weird errors.
5857 * various new style warnings:
5858 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5859 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5860 ** using the lexical binding of a variable named in the *FOO* style
5861 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5862 as specified by ANSI.
5863 * *RANDOM-STATE* is no longer automatically initialized from
5864 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5865 default behavior of the system is to repeat its behavior every time
5866 it's run. If you'd like to change this behavior, you can always
5867 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5868 old convention there was no comparably easy way to get the system to
5869 repeat its behavior every time it was run.
5870 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5871 FTYPE declarations has been removed, in favor of their ANSI
5872 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5873 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5874 the types of their sequence arguments can be determined at compile time.
5875 This is done through a new open code expansion for MAP which eliminates
5876 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5877 argument types can be determined at compile time.
5878 * The optimizer now transforms COERCE into an identity operation when it
5879 can prove that the coerced object is already of the correct type. (This
5880 can be a win for machine generated code, including the output of other
5881 optimization transforms, such as the MAP transform above.)
5882 * Credit information has been moved from source file headers into CREDITS.
5883 * Source file headers have been made more standard.
5884 * The CASE macro now compiles without complaining even when it has
5887 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5889 * (Note that the way that the PCL macroexpansions were rewritten
5890 to accommodate the change in DEFGENERIC below breaks binary
5891 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5892 not run under sbcl-0.6.2. Once we get out of alpha releases,
5893 i.e. hit release 1.0.0, we'll probably try to maintain binary
5894 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5895 and sbcl-1.4.4. Until then, however, it might be fairly common
5896 for maintenance releases to break binary compatibility.)
5897 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5899 * The reporting of unhandled signals has been changed to print some
5900 explanatory text as well as the report form. (Previously only
5901 the report form was printed.)
5902 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5903 it defines, so that the compiler no longer issues undefined function
5904 warnings for compiled-but-not-yet-loaded generic functions.
5905 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5906 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5907 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5908 section of the ANSI spec are supported.
5909 * The "" nickname for the "KEYWORD" package has been removed.
5910 The reader still handles symbol tokens which begin with a package marker
5911 as keywords, but it doesn't expose its mechanism for doing so in the
5912 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5913 * The system now issues STYLE-WARNINGs for contradictory TYPE
5914 proclamations. (Warnings for contradictory FTYPE proclamations would
5915 be nice too, but those can't be done usefully unless the type system
5916 is made smarter about FUNCTION types.)
5917 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5918 systematized, so that "*target-*.lisp is supposed to exist only on the
5919 target and imply that there's a related file which exists on the
5920 host, and *host-*.lisp is supposed to exist only on the host and imply
5921 that there's a related file which exists on the target. This involves a
5922 lot of renaming. Hopefully the acute confusion caused by the renaming
5923 will be justified by the reduction in chronic confusion..
5924 ** runtime-type.lisp -> early-target-type.lisp
5925 ** target-type.lisp -> late-target-type.lisp
5926 ** early-host-format.lisp -> early-format.lisp
5927 ** late-host-format.lisp -> late-format.lisp
5928 ** host-error.lisp -> misc-error.lisp
5929 ** early-error.lisp -> early-target-error.lisp
5930 ** late-error.lisp -> late-target-error.lisp
5931 ** host-defboot.lisp -> early-defboot.lisp
5932 ** code/misc.lisp -> code/target-misc.lisp
5933 ** code/host-misc.lisp -> code/misc.lisp
5934 ** code/numbers.lisp -> code/target-numbers.lisp
5935 ** code/early-numbers.lisp -> numbers.lisp
5936 ** early-host-type.lisp -> early-type.lisp
5937 ** late-host-type.lisp -> late-type.lisp
5938 ** host-typep.lisp -> typep.lisp
5939 ** load.lisp -> target-load.lisp
5940 ** host-load.lisp -> load.lisp
5941 ** host-disassem.lisp -> disassem.lisp
5942 ** host-insts.lisp -> insts.lisp
5943 ** byte-comp.lisp -> target-byte-comp.lisp
5944 ** host-byte-comp.lisp -> byte-comp.lisp
5945 ** host-signal.lisp -> signal.lisp
5946 ** host-defstruct.lisp -> defstruct.lisp
5947 ** late-target-type.lisp -> deftypes-for-target.lisp
5948 Furthermore, several other previously target-only files foo.lisp (e.g.
5949 hash-table.lisp and random.lisp) have been split into a target-and-host
5950 foo.lisp file and a target-only target-foo.lisp file, with their key type
5951 definitions in the target-and-host part, so that the cross-compiler will
5952 know more about target types.
5953 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5954 gone away. In their place are various *BACKEND-FOO* variables
5955 corresponding to the slots of the old structure.
5956 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5957 into the target SBCL has been fixed.
5958 * The chill.lisp system for loading cold code into a running SBCL
5960 * Support for the CMU CL "scavenger hook" extension has been removed.
5961 (It was undocumented and unused in the CMU CL sources that SBCL was
5962 derived from, and stale in sbcl-0.6.1.)
5963 * Various errors in the cross-compiler type system were detected
5964 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5965 (enabling various consistency checks). Many of them were fixed,
5966 but some hard problems remain, so the compiler is back to
5967 running without *TYPE-SYSTEM-INITIALIZED* for now.
5968 * As part of the cross-compiler type system cleanup, I implemented
5969 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5970 * I have started adding UNCROSS calls throughout the type system
5971 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5972 on cross-compiler input files will be able to go away, and various
5974 * CONSTANTP now returns true for quoted forms (as explicitly required
5977 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5979 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5980 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5981 (MAKE-LIST -1). In the longer term, it ought to become true
5982 that declarations are assertions even at SAFETY 1. For now, it's not
5983 quite true even at SAFETY 3, but it's at least more nearly true..
5984 (Note that this change seems to increases the size of the system by
5985 O(5%) and to decrease the speed of the compiler by 20% or more.)
5986 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5987 for the problem of printing dozens of lines of distracting information
5988 about low-level system machinery as part of the top stack frame
5989 on entry to the debugger when an undefined function was called.
5990 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5991 is not reset to COMMON-LISP-USER.
5992 * Compilation of stuff related to dyncount.lisp has been made conditional
5993 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5994 smaller. The various dyncount-related symbols have been moved into
5995 a new "SB-DYNCOUNT" package.
5996 * tty-inspect.lisp has been renamed to inspect.lisp.
5997 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5998 feature has gone away. (When we eventually port to other flavors of
5999 libc and/or Unix, we'll try to make the differences between flavors
6000 invisible at the user level.)
6001 * Various other *FEATURES* tags, and/or their associated conditionals,
6002 have been removed if obsolescent, or given better documentation, or
6003 sometimes given more-mnemonic names.
6005 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6007 * tidied up "make.sh" script
6008 * tidied up system directory structure
6009 * better "clean.sh" behavior
6010 * added doc/FOR-CMUCL-DEVELOPERS
6011 * many many small tweaks to output format, e.g. removing possibly-confusing
6012 trailing #\. character in DESCRIBE-INSTANCE
6013 * (EQUALP #\A 'A) no longer signals an error.
6014 * new hashing code, including EQUALP hashing
6015 * tidied up Lisp initialization and toplevel
6016 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6017 * command line argument processing
6018 * added POSIX-GETENV function to deal with Unix-ish environment variables
6019 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6020 terminating SBCL on EOF
6021 * non-verbose GC by default
6022 * There is no more "sbcl" shell script; the sbcl file is now the C
6023 runtime executable (just like CMU CL).
6024 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6026 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6027 symbol and package information as Lisp native symbol and package objects
6028 instead of strings naming symbols and strings naming packages. This way,
6029 whenever packages are renamed (as in warm init), debug information is
6030 transformed along with everything else.
6031 * tweaked the optimization policy declarations which control the building
6032 of SBCL itself. Now, among other things, the system no longer saves
6033 source location debugging information. (This helps two problems at once
6034 by reducing SBCL size and by keeping SBCL from trying to look for its
6035 sources -- which may not exist -- when reporting errors.)
6036 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6037 debugging and testing purposes
6038 * cleaned up printing, making the printer call PRINT-OBJECT for
6039 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6040 methods, giving nearly-ANSI behavior
6041 * converted almost all special variables to use *FOO* naming convention
6042 * deleted PARSE-TIME functionality, since it can be done portably
6043 * moved some files out of cold init into warm init
6044 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6046 * regularized formatting of source files
6047 * added an install.sh script
6048 * fixed ridiculous memory usage of cross-compiler by making
6049 compiler/alloc.lisp not try to do pooling unless it can hook
6050 itself into the GC of the cross-compilation host. Now the system
6051 builds nicely on my old laptop.
6052 * added :SB-ALLOC in target-features.lisp-expr
6053 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6054 was not implemented)
6055 * re-did condition handling and note reporting in the compiler. Notes
6056 are no longer handled by signalling conditions. Style warnings
6057 and warnings are handled more correctly and reported in such a way
6058 that it's easy to find one or the other in your output (so that you
6059 can e.g. figure out which of many problems caused COMPILE-FILE to
6061 * changed the severity of several compiler warnings from full WARNING
6062 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6063 compiler note reporting so that it doesn't use the condition system
6064 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6065 COMPILE-FILE command)
6066 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6067 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6068 no longer supported, since their implementation was deeply intertwingled
6069 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6070 * removed bogus "support" for compiler macros named (SETF FOO), and
6071 removed the compiler macro for SETF INFO (but only after making a fool
6072 of myself on the cmucl-imp mailing list by posting a bogus patch for
6073 DEFINE-COMPILER-MACRO..)
6074 * Compiled files containing forms which have side effects on the Lisp
6075 reader (such as DEFPACKAGE forms) are now handled more correctly.
6076 (Compiler queuing of top level lambdas has been suppressed by setting
6077 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6078 * deleted various currently-unused source files, e.g. gengc.lisp. They
6079 may be added back at some point e.g. when porting to other architectures,
6080 but until they are it's distracting to distribute them and to try to
6082 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6083 there were so many of them they're just distractions, and UNCROSS is
6084 known to be able to handle the current sources
6085 * moved PROFILE functionality into TRACE, so that it will be clear
6086 how the wrapping and unwrapping of functions when you profile them
6087 interacts with the wrapping and unwrapping of functions when you
6088 trace them. (Actually, the functionality isn't there yet, but at least
6089 the interface specification is there. Hopefully, the functionality will
6090 arrive with some future maintenance release.)
6091 * removed host-oops.lisp
6092 * changed signature of QUIT function to allow UNIX-CODE argument
6093 * fixed READ-SEQUENCE bug
6094 * tweaked verbose GC output so that it looks more like the progress
6095 output that ANSI specifies for functions like LOAD
6096 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6097 * added <http://sbcl.sourceforge.com> to the banner information printed by