1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.49:
3 * enhancement: errors from FD handlers now provide a restart to remove
5 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
7 * enhancement: location of user or system initialization file can now easily
8 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
9 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
10 * bug fix: bound derivation for floating point operations is now more
11 careful about rounding possibly closing open bounds. (lp#793771)
12 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
13 backwards incompatible change in 1.0.48.27)
14 * bug fix: occasional debugger errors in when a type-error occured in a
15 function with dynamic-extent &rest list.
17 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
18 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
19 interrupts for its body.
20 * enhancement: source locations are now available for files loaded as
21 source, compile-time-too evaluation, and initialization files.
22 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
23 virtual source-file information, eg. overriding input-file of COMPILE-FILE
24 when a temporary file is used for compilation.
25 * enhancement: ASDF has been updated to version 2.015.3.
26 * enhancement: backtraces involving frames from the default evaluator are
28 * enhancement: RUN-PROGRAM works with user-defined binary input and output
30 * enhancement: more informative compile-time warnings and runtime errors for
31 type-errors detected at compile-time.
32 * enhancement: deadlock detection for mutexes and spinlocks.
33 * enhancement: dynamic-extent for &rest lists stack allocate only their
34 spines, not their argumets. While portable code should not rely on this,
35 particularly in combination with inlining, it should make dynamic-extent
37 * enhancement: SB-POSIX improvements:
38 ** WNOHANG and WUNTRACED are exported.
39 ** SYSCALL-ERROR now also provides the name of the failing system call.
40 * enhancement: --script improvements:
41 ** errors on standard input, output, and error streams are handled and
42 cause scripts to exit silently, making them easier to use in shell
44 ** backtraces from scripts now go to standard error instead of the
45 terminal even if one is available.
46 ** --script can be an argument, causing the script to be loaded from
48 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
49 strings to foreign memory.
50 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
51 a file, making it easier to understand heap dynamics.
52 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
53 allows the compiler to automatically elide rest-list allocation so long as
54 the call sites are in functions that the compiler knows cannot escape.
56 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
57 especially in safe code when none of the required arguments have changed
59 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
60 uninterruptible, as well as blocking reads from socket streams created
61 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
62 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
63 from the to-char if the from-char is not a dispatch-macro character.
64 * bug fix: references to undefined variables in function calls that are
65 optimized away now signal a runtime error. (lp#722734)
66 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
67 types from a function defined in the same file. (regression from
69 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
71 * bug fix: spurious errors during QUIT when standard streams were closed.
73 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
74 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
75 years, is now no longer supported.
76 * enhancement: read() and write() have been added to SB-POSIX.
77 * enhancement: types of DEFSTRUCT constructors are proclaimed more
78 accurately, allowing better typechecking of call-sites.
79 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
80 are no longer caught. (reverted to pre 1.0.34 behaviour)
81 * optimization: slightly faster ISQRT. (lp#713343)
82 * bug fix: better support for Solaris /bin/sh in sh-based tests.
83 * bug fix: TRACE behaves better when attempting to trace undefined
84 functions. (lp#740717)
85 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
86 to (FUNCALL #'(LAMBDA ...) ...).
87 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
88 a compile-time error. (lp#720382)
89 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
91 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
92 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
93 optimization. (regression from 1.0.45.18/1.0.46.15)
94 * bug fix: package locks did not protects against compile-time side-effects
96 * bug fix: --dynamic-space-size argument is validated more carefully.
98 * bug fix: memory fault from printing a malformed simple-condition.
100 * bug fix: redefining classes so that slot-definition classes change now
101 engages the obsolete instance protocol. (lp#766271)
102 * bug fix: constant improper lists could break source coverage recording.
104 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
107 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
108 * bug fix: fix mach port rights leaks in mach exception handling code on
109 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
111 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
112 * enhancement: redefinition warnings for macros from different files. (lp#434657)
113 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
114 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
115 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
116 processed using EVAL -- now the appropriate toplevel form is reported instead.
117 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
118 declarations. (lp#726331)
119 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
120 that NIL/NULL is excluded from the type.
121 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
123 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
125 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
126 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
127 stack-allocated values out of their dynamic-extent. (lp#310175)
128 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
129 x86-64 builds caused a type-error.
130 * bug fix: calling COMPILE with something else than a lambda-expression as the
131 second argument reports a more sensible error. (lp#718905)
132 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
133 are detected. (lp#520607)
134 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
136 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
137 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
138 methods. (regression from 1.0.45.18)
139 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
140 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
141 * bug fix: several foreign functions accepting string also accepted NIL and
142 consequently caused a memory fault at 0 now signal a type-error instead.
144 * bug fix: under rare circumstances, constraint propagation could rewrite a
145 variable reference to refer to a variable not in scope, causing an error
146 during physical environment analysis when attempting to close over the
147 variable. (lp#551227)
148 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
150 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
151 * enhancement: largefile support on Solaris.
152 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
153 arguments (lp#710017)
154 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
155 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
157 * optimization: ERROR and CERROR are approximately 5 times faster.
158 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
159 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
160 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
161 up instance creation in those cases.
162 * optimization: arithmetic operations with multiple constant arguments in now
163 have them reduced at compile-time. (lp#676414)
164 * optimization: determining current character position on string-streams for
165 pretty-printing was overly slow.
166 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
167 lifetime analysis to overwrite closed-over variables (lp#681092).
168 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
169 were not handled correctly (lp#713063).
170 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
172 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
173 mistake. (lp#667297).
174 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
175 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
176 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
177 unintern the wrong symbol with the same name. (lp#693796)
178 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
179 making it possible to restore the initial table if it has been messed up.
182 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
183 * enhancement: ~/ and ~user/ are treated specially in pathnames.
184 Refer to documentation for details.
185 * enhancement: ASDF has been updated to version 2.010.
186 * optimization: mutated closed-over variables that are only accessed by
187 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
188 declared to be DYNAMIC-EXTENT) are stored directly in their containing
189 stack frame, rather than allocating a VALUE-CELL (lp#586103).
190 * optimization: UNWIND-PROTECT cleanup functions are now declared
192 * bug fix: backtracing function with &REST arguments now shows the full
193 argument list. (lp#310173)
194 * bug fix: return types for functions with complex lambda-lists are now
195 derived properly (lp#384892)
196 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
197 long string arguments slowed the compiler down to a crawl.
198 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
199 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
200 in the DEFMETHOD body.
201 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
202 messages, being instead replaced with the corresponding function name.
203 * bug fix: don't derive overly complex unions of numeric types for arithmetic
204 operators. (lp#309448)
206 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
207 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
208 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
209 * enhancement: ALLOCATION-INFORMATION also provides the page the object
211 * enhancement: default dynamic-space size can be configured at build-time
212 without touching source, using the --dynamic-space-size argument to make.sh.
213 * enhancement: DESCRIBE recognizes symbols naming optimization policy
214 qualities, and mentions ALWAYS-BOUND declarations.
215 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
217 * enhancement: ASDF has been updated to 2.009.
218 * enhancement: the system detects known type-erros in calls better,
219 signalling a full warning about violated proclaimed FTYPEs and violations
220 of derived FTYPEs within the same file, including self-calls.
221 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
222 * optimization: constant-folding exploits numeric and character types, in
223 addition member types.
224 * optimization: numeric, character and member types that are inhabited by
225 exactly one value are tested with EQL.
226 * optimization: more conditional branches are eliminated during IR1.
227 Branches are simplified before performing if/if-conversion, and simple
228 equivalent branches (that only read the same constant or variable) are
230 * improvements to the Windows port:
231 ** change: canonical unparsing form for pathname namestrings now uses / as
232 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
233 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
234 on Windows. (thanks to Kalyanov Dmitry)
235 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
237 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
238 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
239 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
240 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
242 * bug fix: interrupts arriving during CL:OPEN caused an error.
243 * bug fix: overeager character buffering could cause input to block
244 spuriously when reading from a pipe (lp#643686)
245 * bug fix: more efficient timer expiry should avoid starvation on systems
246 where number of SIGALRMs per second is restricted. (lp#375515)
247 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
248 * bug fix: compile-times no longer scale linearly with the size of
249 quoted lists in source-code. (lp#654289)
250 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
251 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
252 so badly. (lp#654485)
253 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
254 an error for eg. STRUCTURE. (lp#458015)
255 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
256 (lp#613871, thanks to Roman Marynchak)
257 * bug fix: more reliable &REST list type derivation. (lp#655203)
258 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
259 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
260 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
261 also declared NOTINLINE. (lp#655581)
262 * bug fix: the compiler could attempt to emit constant left shifts of
263 greater value than n-word-bits. (lp#309063)
264 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
265 type information for the function being set. (lp#659220)
266 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
267 containing self-calls were recompiled with a new signature, and failed
268 to warn when a self-call using the old signature was left in. (lp#655126)
269 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
270 :DEFAULT when the default external had character size other than 8 bits.
272 * bug fix: derived types of functions in the same file were implicitly
273 trusted, leading to potential heap corruption when those function were
274 defined incompatibly. (lp#657499)
275 * bug fix: existing ASDF source registries are ignored when building
277 * bug fix: short-form DEFSETF checks that the second argument is a symbol
278 (lp#655824, thanks to Roman Marynchak)
279 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
280 package-lock violation was detected. (lp#660752)
281 * bug fix: the system can store different docstrings for a single function
282 under different names. (lp#661631, regression from 1.0.29.24)
283 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
284 properly. (lp#384801)
285 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
286 of specified length could confuse the type derivation in unsafe code.
288 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
289 fork with multiple Lisp threads running is made on every platform,
290 not just Darwin. (lp#451111)
291 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
292 around when core was saved, which could cause undefined behaviour when the
294 * bug fix: Allow UNTRACE of functions that are no longer defined
295 (lp#667657, thanks to Attila Lendvai)
296 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
297 compile-time warning (lp#664373, thanks to Stas Boukarev)
299 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
300 * incompatible change: FD-STREAMS no longer participate in the serve-event
301 event-loop by default. (lp#316072)
302 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
303 affects streams from CL:OPEN.
304 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
305 default, but this is liable to change: applications needing serve-event
306 for socket streams should explicitly request it using :SERVE-EVENTS T
308 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
310 * enhancement: CLOS effective method functions and defclass slot typechecking
311 function now have debug names for use in backtraces and profiles.
312 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
314 * enhancement: symbols are printed using fully qualified names in several
315 error and warning messages which are often associated with package
316 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
317 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
318 thanks to Andrew Golding)
319 * bug fix: reading /proc files on Linux works. (lp#425199)
320 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
322 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
323 breaking code that tried to write the value of a printer control variable.
324 (lp#581564, thanks to Stas Boukarev)
325 * bug fix: WRITE compiler macro did not handle output stream designators
326 correctly. (lp#598374, thanks to Stas Boukarev)
327 * bug fix: better availability of names of foreign functions in backtraces
328 on Linux. (lp#626962, thanks to Stas Boukarev)
329 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
330 lp#627581, thanks to Josh Elsasser and Jim Wise)
331 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
332 thanks to Josh Elsasser)
333 * bug fix: using aliases for builtin classes as defmethod specializers
334 without adding DEFTYPEs for them works. (lp#618387)
335 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
337 * bug fix: legally dynamic-extent lists and vectors used as
338 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
339 * bug fix: inline-expansion creating references to dead lambda-variables
340 (lp#454681, thanks to Alexey Dejneka)
341 * bug fix: better error message for bogus numerical arguments to RANDOM.
342 (lp#598986, thanks to Stas Boukarev)
343 * bug fix: the compiler occasionally inlined references from incompatible
344 environments occurs. (lp#308951)
345 * bug fix: the compiler threw an error when trying to compile a local
346 function (labels or flet) known to take a specialized complex argument.
347 (not in launchpad, reported by sykopomp in #lispgames)
348 * bug fix: package-locks failed to protect against compile-time effects of
349 DEFUN when the symbol previously had a macro definition. (lp#576637)
350 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
351 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
352 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
353 * bug fix: evaluation in debugger REPL works using the global context when
354 in frames that do not have sufficient debug information.
355 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
357 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
359 * bug fix: interrupt taking longer than the requested period caused SLEEP
360 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
362 changes in sbcl-1.0.42 relative to sbcl-1.0.41
364 ** Cross-compilation host is now specified to make.sh using
365 command-line argument --xc-host=<command> instead of a positional
366 argument. (thanks to Daniel Herring)
367 ** Install location can be specified to make.sh using command-line
368 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
369 * optimization: The default implementation of
370 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
371 * enhancement: Explicit memory barrier operations are now available for use
372 by multithreaded code. See documentation for details.
373 * enhancement: Experimental support for threading on Linux/PPC.
374 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
375 * bug fix: EXPT signals an error if first argument is a zero and second
376 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
377 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
378 (lp#576594, thanks to Roman Marynchak)
379 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
380 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
382 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
383 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
384 cached, leading to many fewer expensive calls to
385 COMPUTE-APPLICABLE-METHODS.
386 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
387 CLASS argument, search for and call an appropriate optimized ctor function
389 * bug fix: WRITE always returns the correct value.
391 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
392 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
393 * bug fix: Name conflicts between symbols passed as arguments to a single
394 call to IMPORT no longer add multiple symbols with the same name to the
395 package (detectable via DO-SYMBOLS).
396 * bug fix: support building without the dlshim on darwin x86 and x86-64
398 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
400 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
401 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
403 * bug fix: linkage-table entries on PPC now no longer overflow their
404 space allocation (potentially causing crashes if they are written out
406 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
407 platforms, preventing the GC from seeing stale pointers on the control
408 stack in subsequent GCs (which would, and does, break invariants).
409 * bug fix: 32-bit unicode external formats now work on big-endian systems.
410 * bug fix: Literal characters with code points greater than about 32767
411 now work on PPC UNICODE builds.
412 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
413 high order bits are explicitly cleared out. In some contrived situations,
414 this could lead to wrong results in mixed real/complex float arithmetic.
415 * bug fix: Fix function/macro redefinition warnings when building with
416 clisp. (lp#576787, thanks to Josh Elsasser)
417 * new platform: experimental support for ppc/openbsd (thanks to Josh
419 * bug fix: Floating-point traps now work on ppc/linux.
421 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
422 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
423 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
424 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
425 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
426 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
427 SB-THREAD:GRAB-MUTEX.
428 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
429 contain additional data structures and tools for concurrent programming;
430 at the moment it contains a lock-free queue, and a lock-free mailbox
432 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
433 GET-MUTEX but takes &key rather than &optional parameters. Also added
434 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
436 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
437 SB-THREAD:WAIT-ON-SEMAPHORE.
438 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
440 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
441 conditions to defer the deadline for forever.
442 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
444 * enhancement: errors from NO-APPLICABLE-METHOD and
445 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
446 generic function call.
447 * enhancement: SB-BSD-SOCKET improvements
448 ** sockets and socket streams now have a more informative printed
449 representation based on the corresponding SOCKET-NAME and
451 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
453 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
454 CL:CLOSE when appropriate, and no longer disassociates the stream
455 from the socket if close failed. (lp#543951)
456 * improvements to the instrumenting profiler
457 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
458 ** optimization: counters no longer use locks for the overflow mode.
459 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
460 incurred an off-by-one miscount.
461 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
462 * enhancement: improved DEFMETHOD pretty-printing.
463 * enhancement: perform range reduction when arguments are too large for
464 x87's transcendentals (instead of returning 0). (lp#327192)
465 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
466 some of CL-PPCRE's macros. (lp#570079)
467 * enhancement: our machine code is slightly less hostile to valgrind on
469 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
470 to Robert Swindells and Aleksej Saushev)
471 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
472 * bug fix: a rare case of startup-time page table corruption.
473 * bug fix: a semaphore with multiple waiters and some of them unwinding due
474 to timeouts could be left in an inconsistent state.
475 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
476 * bug fix: misoptimization of multiplication by one in
477 (SB-C::FLOAT-ACCURACY 0) policies.
478 * bug fix: miscounts in SB-PROFILE.
479 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
480 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
481 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
482 up itself" (March 2010) for further details.
483 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
484 against length of the list if the element is found before the specified
485 END is reached. (thanks to Alec Berryman, lp#554385)
486 * bug fix: errors signalled during package graph modification no longer
487 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
488 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
489 :SB-DOC feature. (lp#552564)
490 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
491 * bug fix: more robust runtime executable path detection. (lp#375549)
492 * bug fix: GCD always returns positive values. (lp#413680)
493 * bug fix: Converting division to multiplication by reciprocal handles
495 * bug fix: We were too eager in eliding range reduction tests on x87.
496 The maximal magnitude is 2^63, not 2^64.
497 * bug fix: Transforms for TRUNCATE don't die when the result is completely
499 * bug fix: Maybe restore buildability on Alpha.
500 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
502 * bug fix: RANDOM-STATE can be printed readably again.
503 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
504 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
505 types) could result in type mismatches during compilation.
507 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
508 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
509 stack frame thrown from.
510 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
511 compiler optimization qualities inside dynamic extent of its body.
512 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
513 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
515 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
516 constraint propgation, allowing better compilation eg. when used to
517 access structures with WITH-SLOTS. (lp#520366)
518 * optimization: the compiler is now more aware of the type of the underlying
519 storage vector for multidimensional simple arrays resulting in better code
520 for accessing such arrays.
521 * optimization: passing NIL as the environment argument to TYPEP no longer
522 inhibits optimizing it. (lp#309788)
523 * optimization: more efficient register usage when handling single-float
524 arguments on x86-64. (thanks to Lutz Euler)
525 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
526 pre-allocated temporary vectors. (lp#496249)
527 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
528 in :INITIAL-CONTENTS. (lp#523612)
529 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
530 functions. (lp#524707)
531 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
532 WITH-SLOTS usages during compilation.
533 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
534 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
535 all x86oid platforms with :UD2-BREAKPOINTS target feature.
536 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
537 instruction (tested on x86oid linux with ud2-breakpoints).
538 * bug fix: slam.sh now works on win32.
539 * bug fix: better differences of numeric types. (lp#309124)
540 * bug fix: arrays declared intersection and union types can have their
541 upgraded element type derived. (lp#316078)
542 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
543 threads started during profiling. (lp#472499)
544 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
546 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
547 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
548 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
549 values instead of signaling an error. (lp#309093)
550 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
552 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
553 declarations (lp#497321)
554 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
555 and failed to detect circular lists (lp#452008)
556 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
558 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
559 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
560 due to it, so that handlers can run.
561 * bug fix: reparsing undefined types if they have become defined since
563 * bug fix: missing &REST type in a proclamation for a function with both
564 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
565 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
566 expanded calls (lp#542174)
567 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
568 than just at toplevel form.
570 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
571 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
572 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
573 but work on type specifiers.
574 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
575 to name a type specifier.
576 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
577 specifier is valid where "valid" basically means "would be accepted as
578 second argument of TYPEP".
579 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
580 returns the function's declared, or derived FTYPE.
581 * new feature: SB-POSIX now supports accessing the d_ino member of
582 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
583 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
584 provide for seeding a RANDOM-STATE object with user-provided data or
585 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
586 attempt to initialize the returned state from the operating system's
587 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
588 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
589 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
590 * bug fix: Fix grammar and style issues for the docstrings of
591 printer-related variables and functions. (Thanks to mon_key; launchpad
593 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
595 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
596 in a row even though a handler defered the deadline long into the
598 * bug fix: A deadline handler was run without interrupts enabled for a
599 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
600 in infinitely spinning, non-killable threads.
601 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
602 before reaching the erring stack frame.
603 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
604 real power. (launchpad bug lp#525949)
605 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
606 GENCGC platforms. (launchpad bug lp#529014)
607 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
608 (launchpad bug lp#525916)
609 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
610 (Thanks to Robert Goldman)
612 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
613 * optimization: ROUND with a single single-float or double-float argument
614 is properly inlined when possible.
615 * optimization: Slightly better code is generated for integer<->float
616 conversions and for single-float<->double-float conversions on x86-64.
617 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
618 code for 32-bit and 64-bit rotations on x86-64.
619 * bug fix: The install script changes the ownership of directories as well
620 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
621 launchpad bug lp#508485)
622 * bug fix: TRUNCATE with a single single-float or double-float argument is
623 properly inlined when possible. (launchpad bug lp#489388)
624 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
625 no longer causes a compiler error on x86 and ppc.
626 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
627 always relative to *READTABLE* rather than the passed argument.
629 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
630 * minor incompatible change: threading support is now enabled by default
632 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
634 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
635 are now caught and reported just like errors during macroexpansion.
636 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
637 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
638 * enhancement: ASDF systems can now depends on SB-QUEUE.
639 * fixes and improvements related to Unicode and external formats:
640 ** bug fix: error handling and restart usage in the ucs-2 external format
642 ** there is now an implementation of the ucs-4 external format.
643 ** the utf-16 and utf-32 external formats are supported.
644 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
645 in the environment. setenv() and unsetenv() are also provided. (reported by
646 Fare Rideau; launchpad bug lp#460455)
647 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
648 loading. This ensures sensible errors for .FASL files from other
649 implementations on case-insensitive filesystems. (reported by Willem
650 Broekema; launchpad bug lp#489417)
651 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
652 Willem Broekema; launchpad bug lp#489698).
653 * bug fix: some minor code rearrangements to reenable warning-free building
654 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
655 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
657 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
660 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
661 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
662 * improvement: support O_LARGEFILE access to files larger than 2GB on
663 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
664 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
665 definitions for methods specializing on the passed class itself.
666 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
667 definitions for methods specializing on the passed class itself, or on
669 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
670 about itself during the build (e.g. for M-? in Slime), if this flag is
671 enabled in customize-target-features.lisp. This will increase the core
672 size by about 5-6mb, though, so it's mostly interesting to SBCL
674 * new feature: various GENCGC tuning parameters have been experimentally
675 documented and exported from SB-EXT. See documentation for details.
676 * fixes and improvements related to Unicode and external formats:
677 ** the Unicode character database has been upgraded to the
678 Unicode 5.2 standard, giving names and properties to a number of new
679 characters, and providing a few extra characters with case
681 ** improvement: restarts for providing replacement input/output on coding
682 errors for fd-stream external formats.
683 ** improvement: where :<encoding> is a keyword corresponding to an
684 external format the system supports, it is now possible to specify
685 (:<encoding> :replacement <character>) as an external format which will
686 automatically substitute <character> on encoding or decoding errors for
687 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
689 ** improvement: the file streams underlying the standard streams (such as
690 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
691 which uses the replacement mechanism to handle encoding errors,
692 preventing various infinite error chains and unrecoverable I/O
694 ** minor incompatible change: the utf-8 external format now correctly
695 refuses to encode Lisp characters in the surrogate range (char-codes
696 between #xd800 and #xdfff).
697 ** fix a typo preventing conversion of strings into octet vectors
698 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
700 ** fix a bug in the octet multibyte handling of decoding errors and the
701 USE-VALUE restart. (launchpad bug lp#314939)
702 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
703 restart on fd-stream decoding errors.
704 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
705 error is near the end of file.
706 ** fix a double-error case in unibyte octet conversions, when the first
707 use of USE-VALUE is ignored.
708 ** fix bugs in handling of undefined code points in unibyte encodings.
709 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
710 streams after an UNREAD-CHAR.
711 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
712 object is allocated in a boxed region of dynamic space.
713 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
714 fork with multiple Lisp threads running is made, instead of going
715 ahead with unpredictable consequences. (reported by Leslie Polzer)
716 * bug fix: uses of slot accessors on specialized method parameters within
717 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
718 error while finalizing the class. This fix may cause classes with slot
719 accessors to be finalized later than previously. (reported by Lars Rune
720 Nøstdal; launchpad bug lp#473699)
721 * bug fix: restore buildability on the MIPS platform. (regression from
722 1.0.30.38, reported by Samium Gromoff)
723 * bug fix: inspecting closures is less likely to fail with a type error.
724 * bug fix: no timer starvation when setting the system clock back.
725 (launchpad bug lp#460283)
726 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
727 standard pprint dispatch table as specified by CLHS.
728 * bug fix: give CLISP a hint about a type declaration to enable it to build
729 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
731 * bug fix: correctly dump literal objects in defaulting forms of arglists.
732 (reported by Attila Lendvai; launchpad bug lp#310132)
733 * bug fix: distinguish in type specifiers between arrays that might be
734 complex and arrays that are definitely complex. (launchpad bug lp#309129)
735 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
736 type. (reported by Levente Mészáros; launchpad bug lp#485972)
737 * bug fix: setting the value of a symbol-macro within a method in the
738 presence of type declarations works properly again. (reported by Iban
739 Hatchondo; launchpad bug lp#485019)
741 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
742 * optimization: faster FIND and POSITION on strings of unknown element type
743 in high SPEED policies. (thanks to Karol Swietlicki)
744 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
746 * improvement: better error signalling for bogus parameter specializer names
747 in DEFMETHOD forms (reported by Pluijzer)
748 * bug fix: DELETE-FILE once again works on logical pathnames (regression
750 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
752 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
753 removes previous default initargs (reported by Lars Rune Nøstdal and
755 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
756 lambda-lists. (reported by Peter Seibel)
757 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
758 correctly when starting from an executable core without saved runtime
759 options (reported by Faré Rideau, thanks to Zach Beane)
760 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
761 an optimization note instead. (reported by Martin Cracauer)
762 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
763 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
764 new process group if it doesn't need to share stdin with the sbcl
765 process. (thanks to Leslie Polzer)
766 * bug fix: SATISFIES could be misoptimized to refer to a local function.
767 (reported by Stanislaw Halik)
769 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
770 * improvement: stack allocation is should now be possible in all nested
771 inlining cases: failure to stack allocate when equivalent code is manually
772 open coded is now considered a bug.
773 * improvements related to Unicode:
774 ** the Unicode character database has been upgraded to the
775 Unicode 5.1 standard, giving names and properties to a number of new
776 characters, and providing a few extra characters with case
778 ** the system now recognizes and produces names for Unicode Hangul
780 ** the EBCDIC-US external-format is now supported for octet operations
781 (as well as for stream operations).
782 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
783 be used to output toplevel compile-time effects into a separate .CFASL
785 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
786 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
788 * optimization: TRUNCATE on known single- and double-floats is upto 25%
790 * optimization: division of floating point numbers by constants uses
791 multiplication by reciprocal when an exact reciprocal exists.
792 * optimization: multiplication of single- and double-floats floats by
793 constant two has been optimized.
794 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
795 sufficient type information is available. (thanks to Leslie Polzer)
796 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
797 known structure objects are as efficient as defstruct generated accessors.
798 * optimization: unused vector creation can now be optimized away.
799 * improvement: ASDF systems can now depends on SB-INTROSPECT.
800 * improvement: a STYLE-WARNING is signalled when a generic function
801 clobbers an earlier FTYPE proclamation.
802 * improvement: the compiler is able to track the effective type of
803 generic function across method addition and removal even in the
804 absence of an explicit DEFGENERIC.
805 * improvement: DESCRIBE now reports on symbols naming undefined
806 but assumed or declared function as well.
807 * improvement: recompilation of systems using SB-GROVEL now works
808 (thanks to Leslie Polzer)
809 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
810 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
812 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
813 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
814 well as user defined declaration names.
815 ** VARIABLE-INFORMATION is now aware of alien variables.
816 * improvement: improved address space layout on OpenBSD (thanks to Josh
818 * improvement: pretty-printing of various Lisp forms has been improved
819 (thanks to Tobias Rittweiler)
820 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
821 unused were deleted in safe code. (reported by John Fremlin)
822 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
824 * bug fix: some out-of-line array predicates were missing (reported by
826 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
828 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
829 (thanks to Larry D'Anna)
830 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
831 as well. (reported by Josh Elsasser)
832 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
833 leading to possible attempts to delete the same file twice. See docstring
834 on DELETE-FILE for details. (reported by John Fremlin)
835 * bug fix: DELETE-FILE once again deletes the file named by the pathname
836 designator argument, rather than its truename. (reported by Luis
838 * bug fix: the low-level debugger had 32-bit assumptions and was missing
839 information about some array types. (thanks to Luis Oliveira)
840 * bug fix: moderately complex combinations of inline expansions could
841 be miscompiled if the result was declared to be dynamic extent.
842 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
843 form (+ <variable> <integer>) were miscompiled under certain
845 * bug fix: in some cases no compiler note about failure to stack allocate
846 was emitted, even if the objects were in fact heap allocated.
847 * bug fix: minor violation of "otherwise inaccessible" rule for stack
848 allocation could cause objects users might reasonably expect to
849 be heap allocated to be stack allocated.
850 * bug fix: DESCRIBE signalled an error for generic functions under
851 certain circumstances. (thanks to Leslie Polzer)
852 * bug fix: Fixed spelling of an error message.
854 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
855 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
856 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
857 of SB-THREAD:THREAD-ERROR-THREAD.
858 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
859 * new feature: docstrings for local and anonymous functions are no longer
860 discarded. (thanks to Leslie Polzer)
861 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
862 values in other threads.
863 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
864 about object allocation.
865 * optimization: division of a real float by a complex float is implemented
866 with a specialised code sequence.
867 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
868 keywords is an order of magnitude faster.
869 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
870 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
871 methods, and similarly for non-standard metaclass classes as long as there
872 are no methods additional on MAKE-INSTANCE.
873 * optimization: more efficient type-checks for FIXNUMs when the value
874 is known to be a signed word on x86 and x86-64.
875 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
876 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
878 * optimization: compiler is smarter about delegating argument type checks to
880 * optimization: several character functions are now compiled somewhat more
881 efficiently. (reported by Lynn Quam)
882 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
883 * improvement: less unsafe constant folding in floating point arithmetic,
884 especially for mixed complex/real -float operations.
885 * optimization: constant double and single floats are stored in native
886 unboxed format on x86[-64].
887 * optimization: smarter code for arithmetic operations with constant floats,
888 complex floats, or integers on x86[-64].
889 * optimization: smarter code for conjugate/multiplication of float complexes
890 and abs/negate of floats on x86-64.
891 * optimization: more efficient complex float and real float operations on
893 * improvement: complex float division is slightly more stable.
894 * improvement: DESCRIBE output has been reworked to be easier to read and
895 contains more pertinent information.
896 * improvement: failure to provide requested stack allocation compiler notes
897 provided in all cases (requested stack allocation not happening without a
898 note being issued is now considered a bug.)
899 * bug fix: SB-POSIX exports the documented types and functions
900 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
901 types. (reported by "abhi")
902 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
903 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
904 (thanks to Paul Khuong)
905 * bug fix: looping around HANDLER-CASE could silently consume stack space
906 on each iteration. (reported by "foobar")
907 * bug fix: better error signalling when calls to functions seeking elements
908 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
909 (reported by Tobias Rittweiler)
910 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
911 directory components now works as it used to. (various prolems reported by
912 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
913 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
914 (reported by Elliot Slaughter, thanks to Stas Boukarev)
915 * bug fix: bogus undefined variable warnings from fopcompiled references to
916 global variables. (thanks to Lars Rune Nøstdal)
917 * bug fix: foreign function names should now appear in backtraces on
918 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
919 * bug fix: SETF compiler macro documentation strings are not discarded
921 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
922 (thanks to Alex Plotnick)
923 * bug fix: SLEEP accepts large integer arguments, truncating them to
924 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
925 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
926 * bug fix: compiler notes for expensive slot type checks could be emitted
927 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
929 changes in sbcl-1.0.29 relative to 1.0.28:
930 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
931 https://bugs.launchpad.net/sbcl
932 Bugs can be reported directly there, or by sending email to
933 sbcl-bugs@lists.sourceforge.net
934 (no subscription required.)
935 * minor incompatible change: under weak type checking policy integer
936 types are weakened less aggressively.
937 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
938 allowed to return, which causes SBCL to quit with exit status 0. Previously
939 if the function returned with a small integer return value, that value
940 was accidentally reused as the exit status.
941 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
942 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
943 :HASH-FUNCTION argument. Refer to user manual for details.
944 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
946 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
947 microseconds since the Unix epoch on all platforms.
948 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
949 allows the compiler to safely elide boundedness checks for special
951 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
952 the symbol, prohibits both lexical and dynamic binding. This is mainly an
953 efficiency measure for threaded platforms, but also valueable in
955 * new feature: UNC pathnames are now understood by the system on Windows.
956 * optimization: the compiler uses a specialized version of FILL when the
957 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
959 * optimization: accesses to potentially non-simple arrays where element type
960 is known are 50% faster.
961 * optimization: compiler now generates faster array typechecking code.
962 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
964 * optimization: multidimensional array accesses in the absence of type
965 information regarding array rank are approximately 10% faster due to
966 open coding of ARRAY-RANK.
967 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
968 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
970 * optimization: result of call to VECTOR can now be stack allocated.
971 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
972 as long as the resulting array is one-dimensional and has a known
973 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
974 length of the list matches the known length of the vector does not
975 allocate the list as an intermediate step. Ditto for VECTOR and simple
977 * optimization: MAKE-ARRAY can now stack allocate in the presence of
978 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
979 known element type, and is known to be simple and one dimensional.
980 * improvement: SBCL now emits a compiler note where stack allocation was
981 requested but could not be provided (not in all cases, unfortunately)
982 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
983 * improvement: pretty-printing loop has been implemented properly. (thanks
984 to Tobias Rittweiler)
985 * documentation: CLOS slot typechecing policy has been documented.
986 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
987 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
988 pointer, leading to memory faults. (thanks to Bart Botta)
989 * bug fix: better floating point exception handling on x86/OpenBSD.
990 (thanks to Josh Elsasser)
991 * bug fix: exit status from QUIT when called under --script was lost
992 (reported by Hubert Kauker)
993 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
994 same implementation of FILL to initialize the array, even if a more
995 efficient one was available (reported by Stas Boukarev, thanks to
997 * bug fix: potential miscompilation of array stack allocation on x86 and
998 x86-64. (reported by Time Tossavainen)
999 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1000 result in their subforms being treated as top level forms. (reported by
1002 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1003 than a machine register could leave garbage in the high bits of the
1004 result register (bug 316325).
1005 * bug fix: disable address space randomization Linux/x86-64 as well,
1006 not just x86-64. (reported by Ken Olum)
1007 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1008 generate incorrect code.
1009 * bug fix: #201; type inference for CONS and ARRAY types could derive
1010 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1011 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1012 could not be assigned to or bound with PROGV. (reported by Lorenz
1014 * bug fix: the value of CL:- in the inspector was the previous expression
1015 evaluated rather than the expression being evaluated.
1016 * bug fix: constants can no longer be locally declared special.
1017 * bug fix: signals delivered to threads started from foreign land (read:
1018 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1019 thread by blocking all signals and resignalling.
1020 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1021 from :INITFORM, if any.
1023 changes in sbcl-1.0.28 relative to 1.0.27:
1024 * a number of bugs in cross-compilation have been fixed, with the ultimate
1025 result that building under (at least) clisp should be much more reliable.
1026 * minor incompatible changes: echo-streams now propagate unread-char to the
1027 underlying input stream, and no longer permit unreading more than one
1029 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1030 frames, allowing for instance more reliable backtraces.
1031 * improvement: the debugger REPL can now reference lexical variables
1032 by name directly for code compiled with (DEBUG 3).
1033 * improvement: errors from malformed declarations now have better source
1034 paths associated with them. (thanks to Tobias Rittweiler)
1035 * optimization: faster local calls on x86/x86-64
1036 * bug fix: some error messages for out-of-bound array indexes confused the
1037 index and the bound. (thanks to Stas Boukarev)
1038 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1040 * bug fix: running regressions tests in shells without OSTYPE set now works.
1041 (reported by Harald Hanche-Olsen)
1042 * bug fix: more robust static space exhaustion signalling from
1043 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1044 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1045 docstring away instead of storing it under names such as (LAMBDA (X)).
1046 (reported by Leslie Polzer)
1047 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1048 (thanks to Ole Arndt for the patch)
1049 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1050 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1051 potentially-invalid effective methods in its cache.
1052 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1053 instances as well (thanks to Paul Khuong)
1054 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1055 SB-POSIX:WAITPID and their C equivalents.
1056 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1058 changes in sbcl-1.0.27 relative to 1.0.26:
1059 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1060 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1061 * improvement: the system either recovers from stack exhaustion or dies
1062 properly as opposed to leaving the user uncertain of whether the handler
1063 trampled on some random memory next to the stack or having to rely on
1064 --lose-on-corruption (which is still a good idea to use in production
1065 because stack exhaustion can happen in signal handlers which will likely
1067 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1068 1.0.25.37, reported by Harald Hanche-Olsen)
1069 * bug fix: work around signal delivery bug in darwin (regression from
1070 1.0.25.44, reported by Sidney Markowitz)
1071 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1073 changes in sbcl-1.0.26 relative to 1.0.25:
1074 * incompatible change: an interruption (be it a function passed to
1075 INTERRUPT-THREAD or a timer function) runs in an environment where
1076 interrupts can be enabled. The interruption can use
1077 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1078 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1079 potentially running out of stack. Keep in mind that in the absence
1080 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1081 acquiring a lock can enable interrupts.
1082 * incompatible change: GC-OFF and GC-ON are removed, as they were
1083 always unsafe. Use WITHOUT-GCING instead.
1084 * new feature: runtime option --disable-ldb
1085 * new feature: runtime option --lose-on-corruption to die at the
1086 slightest hint of possibly non-recoverable errors: running out of
1087 memory, stack, alien stack, binding stack, encountering a memory
1088 fault, etc. In the absence of --lose-on-corruption a warning is
1090 * enhancement: detect binding stack exhaustion
1091 * enhancement: detect alien stack exhaustion on x86/x86-64
1092 * improvement: generally more stable and reliable interrupt handling
1093 * improvement: there is a per thread interruption queue,
1094 interruptions are executed in order of arrival
1095 * improvement: a repeating timer reschedules itself when the it has
1096 finished, but expiration times are spaced equally. If an
1097 expiration time is in the past it will trigger after a short grace
1098 period that may give a chance to other things to run.
1099 * optimization: slightly faster gc on multithreaded builds
1100 * optimization: faster WITHOUT-GCING
1101 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1102 important locks so that the debugger/handler doesn't produce
1103 recursive errors or deadlock.
1104 * bug fix: real-time signals are not used anymore, so no more
1105 hanging when the system wide real-time signal queue gets full.
1106 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1108 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1109 * bug fix: fix random memory faults related to interrupts on alpha
1110 * bug fix: fix random memory faults related to interrupts on sparc
1111 * bug fix: fix deadlocks related to starting threads
1112 * bug fix: fix deadlines on locks on futex platforms
1113 * bug fix: restore errno in signal handlers
1114 * bug fix: fix deadlocks related to hash tables
1115 * bug fix: fix deadlocks in pcl
1117 changes in sbcl-1.0.25 relative to 1.0.24:
1118 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1119 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1120 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1121 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1122 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1123 better name and does not return values so stale on multiprocessor systems.
1124 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1126 * improvement: unithread builds keep track of MUTEX-VALUE.
1127 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1128 stream anymore making it thread safe to have a concurrent reader and
1129 a writer, for instance, in a pipe.
1130 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1131 arguments, making compiler-macros for SETF-functions able to inspect
1132 their constant arguments.
1133 * improvement: COMPILE-FILE reports times with millisecond accuracy
1134 (thanks to Luis Oliveira)
1135 * optimization: CHAR-CODE type derivation has been improved, making
1136 TYPEP elimination on subtypes of CHARACTER work better. (reported
1137 by Tobias Rittweiler, patch by Paul Khuong)
1138 * bug fix: setting alien structure fields of type struct by value now
1139 computes the right offset for the memory copy.
1140 * bug fix: compilation problem involving inlined calls to aliens with
1141 result type VOID. (reported by Ken Olum)
1142 * bug fix: #235a; sequential inline expasion in different policies no
1143 longer reuses the functional from the previous expansion site.
1144 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1145 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1146 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1147 cause an implied type redefinition. Regression from 1.0.21.29.
1148 * bug fix: sign-extension of small signed return values now works with C
1149 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1150 * improvements to the Windows port:
1151 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1152 Westfold, thanks to Rudi Schlatte)
1154 changes in sbcl-1.0.24 relative to 1.0.23:
1155 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1156 vector of a multidimensional SIMPLE-ARRAY.
1157 * new feature: the system now signals a continuable error if standard
1158 readtable modification is attempted. (thanks to Tobias Rittweiler)
1159 * new feature: DIRECTORY has been extended with a non-standard keyword
1160 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1161 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1162 has been robustified and documented better. (thanks to Robert Goldman)
1163 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1164 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1165 * tradeoff: constant FORMAT control strings are now compiled unless
1166 SPACE > SPEED (previously only when SPEED > SPACE.)
1167 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1169 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1171 * bug fix: lexical type declarations are now correctly reported by
1172 SB-CLTL2. (reported by Larry D'Anna)
1173 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1174 using UTF-8 as external format. (thanks to Luis Oliveira)
1175 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1176 are signalled correctly. (thanks to Stas Boukarev)
1177 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1178 designator. (thanks to Tobias Rittweiler)
1179 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1180 designator, and returns T instead of the function. (thanks to
1182 * bug fix: direct superclasses of STANDARD-CLASS and
1183 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1184 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1185 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1186 when no class with the named slot yet exists no longer causes a
1187 compile-time style-warning.
1188 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1189 in safe code. (reported by Didier Verna)
1190 * bug fix: #430; nested structure constructors can stack allocate.
1191 * bug fix: on some 64-bit platforms dynamic space size was truncated
1192 to #xffff0000 bytes. (reported by Benjamin Lambert)
1193 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1194 REPL unusable. (reported by Daniel Herring)
1195 * bug fix: return values of READ-SEQUENCE did not take :START into
1196 account on file streams, regressions since 1.0.12.22. (reported by
1197 Thomas Russ, patch by Paul Khuong)
1198 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1199 method specializer used to confuse permuation vector optimization.
1200 * bug fix: system inserted bogus implicit type declarations for local
1201 special variables in DEFMETHOD bodies.
1202 * bug fix: #354; duplicated frames in backtraces due to
1203 non-tail-call-optimized XEPs to functions with return type NIL
1205 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1206 initializes structure object slots according to DEFSTRUCT initforms,
1207 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1208 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1209 (reported by Bruno Haible and Stephen Wilson)
1210 * bug fix: #395; fill-pointer output streams used now support
1211 element-type BASE-CHAR as well.
1212 * bug fix: compiler error when attempting to derive return value of
1213 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1215 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1217 * bug fix: Mac OS X binaries should now be portable between Leopard
1220 changes in sbcl-1.0.23 relative to 1.0.22:
1221 * enhancement: when disassembling method functions, disassembly
1222 for the associated fast function is also produced.
1223 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1225 * optimization: printing with *PRINT-PRETTY* true is now more
1226 efficient as long as the object being printed doesn't require
1227 special handling by the pretty printer.
1228 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1229 now interact correctly with type declarations.
1230 * partial bug fix: PCL detects infinite recursion during wrapper
1231 validation. (thanks to Attila Lendvai)
1232 * bug fix: #426; nested function calls are inlined properly.
1233 Previously if FOO was an inline function, in calls of the form
1234 (FOO (FOO ...)) the outer call was not inlined.
1235 * bug fix: long long arguments passed in registers to alien
1236 functions on PowerPC Linux and NetBSD are now handled correctly
1237 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1239 changes in sbcl-1.0.22 relative to 1.0.21:
1240 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1241 for the shared object in the current directory, but passes the native
1242 namestring of the designated pathname to the operation system's shared
1243 object loading function as-it.
1244 * minor incompatible change: --disable-debugger toplevel option now takes
1245 effect before processing of initialization files and --eval or --load
1247 * new feature: new commandline argument: --script, which supports
1248 shebang lines. See documentation for details. (based on work by
1250 * new feature: SAVE-LISP-AND-DIE can save current values of
1251 --dynamic-space-size and --control-stack-size in the executable core,
1252 causing it to skip normal runtime option processing. See documentation
1253 for details. (thanks to Zach Beane)
1254 * enhancement: inoccous calls to EVAL or generic functions dispatching
1255 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1256 * enhancement: the system no longer resignals errors from --load and
1257 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1258 associated with the original error to be lost. (thanks to Ariel
1260 * enhancement: :DONT-SAVE keyword argument has been added to
1261 LOAD-SHARED-OBJECT for controlling interaction with
1262 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1263 the effects of an earlier LOAD-SHARED-OBJECT call.
1264 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1265 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1266 provided. (reported by Cedric St-Jean)
1267 * bug fix: circularity handling in the reader did not treat raw
1268 structure slots correctly. (reported by Cedric St-Jean)
1269 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1270 file descriptors when there were none.
1271 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1272 was broken. (reporteed by Willem Broekema)
1273 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1274 pathnames without a directory.
1275 * bug fix: COMPILE-FILE did not warn about undefined variable
1276 references at toplevel, and LOAD of the resulting fasl did
1277 not signal an error.
1278 * bug fix: functions with non-required arguments used to end up with
1279 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1280 * bug fix: redefining a function with non-required arguments didn't
1281 update the system's knowledge about its call signature properly.
1282 * bug fix: fixed #431; incompatible alien record type redefinitions
1283 are detected and handled. (reported by Neil Haven)
1284 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1285 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1287 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1288 after alien stack frames.
1289 * bug fix: strings passed to mk{s,d}temp lacked null termination
1291 changes in sbcl-1.0.21 relative to 1.0.20:
1292 * new feature: the compiler is able to track the effective type of a
1293 generic function across method addition and removal.
1294 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1295 appropriately typed structure slots without locking.
1296 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1297 information like those gathered by TIME using a programming-friendly
1299 * new feature: TIME reports time taken even if the form performs a
1300 non-local transfer of control.
1301 * enhancement: reduced conservativism on GENCGC platforms: on
1302 average 45% less pages pinned (measured from SBCL self build).
1303 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1304 mutate constant symbols or violate declaimed type of the symbol.
1305 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1306 sleeping on the semaphore in heavily contested semaphores.
1307 * bug fix: semaphores and condition variables were not interrupt
1309 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1310 owned by other threads anymore.
1311 * bug fix: FIND on lists called KEY outside the specified
1312 subsequence. (reported by budden)
1313 * bug fix: LOG doesn't use single-float intermediate results when
1314 given mixed integer and double-float arguments, leading to better
1315 precision. (reported by Bob Felts)
1316 * bug fix: LOG with base zero returned values of inconsistent type.
1318 changes in sbcl-1.0.20 relative to 1.0.19:
1319 * minor incompatible change: OPTIMIZE qualities
1320 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1321 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1322 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1323 * documentation: some slot access efficiency guidelines have been
1324 added to the user manual.
1325 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1326 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1327 as ASSOC and MEMEBER.
1328 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1329 to more efficient EQ-comparison versions more often.
1330 * optimization: enhanced derivation of DOLIST iteration variable type
1332 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1334 * optimization: runtime lookup of function definitions can be
1335 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1336 * optimization: compiler is able to derive the return type of
1337 (AREF (THE STRING X) Y) as being CHARACTER.
1338 * optimization: CLRHASH on empty hash-tables no longer does pointless
1339 work. (thanks to Alec Berryman)
1340 * optimization: REPLACE deftransforms don't punt when :START1 or
1342 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1343 no longer emits a code deletion note. (reported by Andrew
1345 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1346 functions with an odd number of &OPTIONAL arguments, a &REST
1347 argument, and one or more &KEY arguments at the call site.
1348 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1349 arguments appeared at call sites as well.
1350 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1351 READ-LINE &co can no longer read from them afterwards. (reported
1353 * bug fix: fixed #427: unused local aliens no longer cause compiler
1354 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1356 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1357 alien-stack leakage. (reported by Andy Hefner)
1358 * bug fix: PROGV signals an error when an attempt to violate declared
1359 type of a variable or bind a constant is made.
1360 * bug fix: SET signals an error when an attempt to violate declared
1361 type of a variable is made.
1362 * bug fix: restart computation during the execution of a restart
1363 test function no longer causes infinite recursion. (reported by
1365 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1366 signals an error. (thanks to Pierre Mai)
1367 * bug fix: EXPORT left symbol unexported in conflict situations.
1368 (thanks to Michael Weber)
1369 * bug fix: correctly handle name conflicts involving CL:NIL.
1370 (thanks to Michael Weber)
1371 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1372 conflicts arising from USEing package with conflicting symbols
1373 correctly. (thanks to Michael Weber)
1375 changes in sbcl-1.0.19 relative to 1.0.18:
1376 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1377 warnings that go otherwise unhandled will be muffled if they are
1378 of the type that's the value of this variable.
1379 * optimization: stack allocation is slightly more efficient on x86
1381 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1382 where a raw slot always is initialized using the initform whose
1383 type is not know sufficiently well a compile-time are now compiled
1384 correctly. (reported by John Morrison)
1385 * bug fix: compiler no longer makes erronous assumptions in the
1386 presence of non-foldable SATISFIES types.
1387 * bug fix: stack analysis missed cleanups of dynamic-extent
1388 arguments in non-let-converted calls to local functions.
1389 * improvements to the Windows port:
1390 ** adjusted address spaces for building on both Win32 and
1391 Win64. (thanks for John Connors)
1392 * fixed some bugs revealed by Paul Dietz' test suite:
1393 ** interval arithmetic during type derivation used inexact integer
1394 to single-float coercions.
1395 ** arithmetic operations involving large integers and single
1396 floats give the same results in compiled and interpreted code.
1397 ** deriving the result type of COERCE no longer signals an error
1398 if the derived type of the second argument is a MEMBER type
1399 containing invalid type specifiers.
1400 ** ADJOIN with constant NIL as second argument works correctly.
1401 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1403 changes in sbcl-1.0.18 relative to 1.0.17:
1404 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1405 profiles only the current thread.
1406 * minor incompatible change: changes to SYMBOL-VALUE of constants
1407 defined with DEFCONSTANT now signal an error.
1408 * enhancement: SB-SPROF now has support for wallclock profiling,
1409 and is also able to profile specific threads. REPORT output
1410 has also additional sorting options.
1411 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1413 * optimization: structure allocation has been improved
1414 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1415 ** out of line constructors are ~10% faster.
1416 ** inline constructors are ~15% faster.
1417 ** inline constructors are capable of dynamic extent allocation
1418 (generally on x86 and x86-64, in some cases on other platforms
1420 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1422 * optimization: file compiler is now able to coalesce non-circular
1423 lists, non-base strings, and bit-vectors. Additionally, constants
1424 are never referenced through SYMBOL-VALUE at runtime.
1425 * optimization: code defining methods on PRINT-OBJECT (and other
1426 generic functions in the COMMON-LISP package) now loads faster.
1427 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1429 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1430 fasl is now deleted. (reported by Attila Lendvai)
1431 * bug fix: READ-LINE always returned NIL for the last line in files.
1432 (reported by Yoshinori Tahara)
1433 * bug fix: more accurate disassembly annotations of foreign function
1434 calls. (thanks to Andy Hefner)
1435 * bug fix: trimming non-simple strings and non-string string
1436 designators when the there is nothing to trim works properly.
1437 (thanks to James Knight)
1438 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1439 (thanks to Travis Cross)
1440 * fixed some bugs revealed by Paul Dietz' test suite:
1441 ** NIL is a valid function name (regression at 1.0.13.38)
1442 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1443 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1444 fill pointers properly (regression at 1.0.12.23)
1445 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1446 displacement indices properly (regression at 1.0.12.23)
1448 changes in sbcl-1.0.17 relative to 1.0.16:
1449 * temporary regression: user code can no longer allocate closure
1450 variable storage on stack, due to bug 419 without explicitly
1451 requesting it. Please consult sbcl-devel for advice if you need to
1452 use this feature in the meanwhile.
1453 * new feature: runtime argument --control-stack-size can be used to
1454 adjust thread default control stack size.
1455 * enhancement: improved TIME output
1456 ** all times are reported using the measured accuracy (milliseconds
1457 for real and GC times, microseconds for everything else.)
1458 ** processor cycle counts on x86 and x86-64.
1459 ** interpreted forms are counted for both evaluator modes.
1460 ** number of lambdas converted by the compiler is reported.
1461 ** CPU percentage report (computed from real and total run time.)
1462 ** more comprehensive run time reporting, using a condenced format
1463 ** interperted form, lambda, and page fault counts are omitted
1465 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1467 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1468 * optimization: two argument forms of LAST are upto ~10% faster
1469 in normal SPEED policies.
1470 * optimization: NCONC no longer needs to heap cons its &REST list
1471 in normal SPEED policies.
1472 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1473 to Sidney Markowitz)
1474 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1475 regression since 1.0.9.1. (thanks to Eric Marsden)
1476 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1477 since 1.0.15.36. (thanks to Paul Khuong)
1478 * bug fix: LAST when always returned the whole list when given a bignum
1479 as the second argument.
1480 * bug fix: dynamic extent allocation of nested lists and vectors
1481 could leak to otherwise accessible parts.
1482 * bug fix: invalid optimization of heap-allocated alien variable
1484 * bug fix: fasl header checking is less vulnerable to different
1485 platform word lengths.
1486 * bug fix: more correct assembler syntax for GNU binutils
1487 2.18.50.0.4 support. (thanks to Marijn Schouten)
1488 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1490 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1491 declarations) successfully. (reported by Attila Lendvai)
1493 changes in sbcl-1.0.16 relative to 1.0.15:
1494 * minor incompatible change: revert the changes to sb-posix's error
1495 signaling added in 1.0.14.
1496 * minor incompatible change: change PROBE-FILE back to returning
1497 NIL whenever we can't get a truename, as was the case before 1.0.14.
1498 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1499 inherits from ERROR instead of just CONDITION.
1500 * new feature: SB-INTROSPECT can provide source locations for instances
1501 as well. (thanks to Tobias Rittweiler)
1502 * optimization: binding special variables now generates smaller code
1503 on threaded platforms.
1504 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1505 and cases where no :TEST is given but the compiler can infer that
1506 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1507 * optimization: better LOGNOT on fixnums.
1508 * optimization: modular arithmetic for a particular requested width
1509 is implemented using a tagged representation unless a better
1510 representation is available.
1511 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1512 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1513 for wellformedness and returns a specialized vector. (reported by
1514 Francois-Rene Rideau)
1515 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1516 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1517 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1518 unscheduling timer at the same time as another timer fires.
1519 * bug fix: don't reschedule timers for dead threads.
1520 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1521 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1522 bogus errors if select() was interrupted.
1523 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1525 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1526 * enhancement: cleaner backtraces for interactive interrupts, as
1527 well as other cases where the interesting frames used to be
1528 obscured by interrupt handling frames.
1529 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1530 now supported, and tracing a whole package using (TRACE "FOO") now
1531 traces SETF-functions as well.
1532 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1533 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1534 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1535 * unreadably printed representation of hash-tables now includes
1537 * bug fix: partially fixed #188: type propagation from assignments
1538 is now more efficient.
1539 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1540 'DOUBLE-FLOAT) are not flushable.
1541 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1542 full address of the object, and none of the tag bits.
1543 * bug fix: readably printing hash-tables now respects other printer
1544 control variables. (reported by Cedric St-Jean)
1545 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1546 keyword with MAKE-HASH-TABLE.
1547 * bug fix: export SB-POSIX:MKSTEMP.
1548 * bug fix: SORT was not interrupt safe.
1549 * bug fix: XREF accounts for the last node of each basic-block as
1551 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1552 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1553 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1554 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1555 create obsolete instances in the case of redefinition or
1556 obsoletion of a superclass. (thanks to Andy Hefner)
1557 * bug fix: Support for the Alpha architecture has been revived; it had
1558 suffered somewhat from lack of maintenance since sbcl-1.0.
1559 * improvements to the Windows port:
1560 ** The system detects the codepage to use at startup, instead of
1561 using the value from the saved core. (thanks to Kei Suzuki)
1563 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1564 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1565 (see documentation for details.)
1566 * revived support for OpenBSD (contributed by Josh Elsasser)
1567 * partially fixed bug #108: ROOM no longer suffers from occasional
1568 (AVER (SAP= CURRENT END)) failures.
1569 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1570 bodies no longer cause a WARNING to be signalled. (reported by
1572 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1573 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1574 the bug in TRUNCATE.) (reported by Michael Weber)
1575 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1576 no samples. (reported by Andy Hefner)
1577 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1578 no longer appear as (NIL ...) frames in backtraces.
1579 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1580 is now actually exported from SB-EXT as documented. (reported by
1582 * bug fix: sb-aclrepl now correctly understands how to inspect
1583 single-floats on 64-bit platforms where single-floats are not boxed.
1584 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1585 yet been finalized. (reported by Levente Meszaros)
1586 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1587 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1588 SBCL-specific optimize qualities.
1590 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1591 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1592 an executable in the search path, and does so in the child
1593 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1594 been removed; it can be found in the CVS history, for somebody who
1595 needs that search behavior (see the manual).
1596 * minor incompatible change: compiler policy re. weakening type
1597 checks has changed: now type checks are weakened only if SAFETY < 2
1599 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1600 unparsing of directory pathnames as files. Analogously,
1601 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1602 filename to parse into a directory pathname.
1603 * enhancement: implicit generic function creation now signals a
1604 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1605 users can bind handlers for and muffle around calls to LOAD.
1606 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1607 to be used (using the default stream external format), and allows
1608 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1609 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1610 strings and vectors whose element-type or simplicity is not fully
1611 known at compile-time.
1612 * optimization: STRING-TRIM and related functions no longer allocate
1613 a new string when no trimming needs to be performed. These functions
1614 are also faster than before when the input string has been declared
1616 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1617 * optimization: READ-LINE is significantly faster for files containing
1619 * optimization: non-open coded uses of character comparison operators
1620 (e.g. char=) no longer cons when called with more than one parameter
1621 on platforms supporting dynamic-extent allocation.
1622 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1623 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1624 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1626 * bug fix: some sequence functions elided bounds checking when
1628 * bug fix: too liberal weakening of union-type checks when SPEED >
1630 * bug fix: more bogus fixnum declarations in ROOM implementation
1633 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1634 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1635 :SYNCHRONIZED argument, which makes the hash-table safe for
1636 concurrent accesses (but not iteration.) See also:
1637 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1638 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1639 * optimization: CONCATENATE on strings is an order of magnitude faster
1640 in code compiled with (> SPEED SPACE).
1641 * optimization: SUBSEQ is ~50% faster on lists.
1642 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1643 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1644 END is smaller then START.
1645 * bug fix: SB-PROFILE will no longer report extra consing for nested
1646 calls to profiled functions.
1647 * bug fix: ROOM implementation had bogus fixnum declarations which
1648 could cause type-errors when calling ROOM on large images.
1649 * bug fix: if file compilation is aborted, the partial fasl is now
1650 deleted, and COMPILE-FILE returns NIL as the primary value.
1651 * bug fix: number of thread safety issues relating to SBCL's internal
1652 hash-table usage have been fixed.
1653 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1654 be returned from its body when the values were being returned
1655 using unknown-values return convection and the W-P-O was wrapped
1656 inside an UNWIND-PROTECT.
1657 * bug fix: sb-posix should now compile again under Windows, enabling
1658 slime to work again.
1660 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1661 * incompatible change: hash-table accessor functions are no longer
1662 automatically protected by locks. Concurrent accesses on the same hash-table
1663 from multiple threads can give inconsistent results or even corrupt the
1664 hash-table completely. Multi-threaded applications should do their own
1665 locking at the correct granularity. In the current implementation it is
1666 still safe to have multiple readers access the same table, but it's not
1667 guaranteed that this property will be maintained in future releases.
1668 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1669 and will signal an error at runtime.
1670 * enhancement: SB-THREAD package now exports a semaphore interface.
1671 * enhancement: CONS can now stack-allocate on x86 and
1672 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1674 * enhancement: nested lists can now be stack allocated on
1675 platforms providing stack allocation support.
1676 * enhancement: dynamic-extent support has been extended to support
1677 cases where there are multiple possible sources for the stack
1679 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1680 if the mutex is uncontested on Linux.
1681 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1682 as specified by the CLHS. (thanks to Tobias Rittweiler)
1683 * bug fix: NaN comparison now works on x86-64.
1684 * bug fix: CLOSE :ABORT T on a stream with pending output now
1686 * bug fix: instances of non-standard metaclasses using standard
1687 instance structure protocol sometimes missed the slot type checks
1689 * bug fix: known functions can be inlined in high-debug code.
1691 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1692 * minor incompatible change: the MSI installer on Windows no longer
1693 associates .lisp and .fasl files with the installed SBCL.
1694 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1695 on Windows. (thanks to Luis Oliviera)
1696 * new feature: SB-CLTL2 contrib module now implements
1697 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1698 * optimization: scavenging weak pointers is now more efficient,
1699 requiring O(1) instead of O(N) per weak pointer to identify
1700 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1701 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1702 method bodies using constant slot-names when the first argument is
1703 a specializer parameter for the method.
1704 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1705 names, when the class of the instance is a direct instance
1706 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1707 as slow as the constant slot-name case.)
1708 * optimization: member type construction is now O(N) instead
1710 * optimization: UNION and NUNION are now O(N+M) for large
1711 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1713 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1714 now more readable in environments like Slime which display it.
1715 (thanks to Tobias C. Rittweiler)
1716 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1717 was able to infer the correct argument type for the object on which
1718 the CAS operation was being performed.
1719 * bug fix: copy propagation interfered with parallel assignment
1720 semantics in local calls. (reported by Paul Khuong)
1721 * bug fix: the signed modular fixnum shift compiled to wrong code on
1722 x86 and x86-64. (spotted by a slight modification to some of
1725 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1726 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1727 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1728 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1730 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1731 and generic function now print the object identity for anonymous
1732 instances. (thanks to Attila Lendvai)
1733 * enhancement: as an extension to MOP, SBCL now supports SETF of
1734 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1735 (thanks to Attila Lendvai)
1736 * enhancement: sb-cover has an alternate annotation mode which puts
1737 the form annotations at the car of the form, instead of annotating
1738 it completely. The benefit of this mode is that it shows better
1739 which forms were instrumented by the compiler.
1740 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1741 by printer control variables. (reported by Dan Corkill)
1742 * bug fix: system leaked memory when delayed output was performed by
1743 the OS in smaller chunks then expected. (thanks to David Smith)
1744 * bug fix: system leaked memory when file streams were not closed
1746 * bug fix: large objects written to slow streams that were modified
1747 after the write could end up with the modified state written to
1748 the underlying file descriptor.
1749 * bug fix: multiple threads operating in parallel on the same stream
1750 could cause buffer-overflows.
1751 * bug fix: source location information is stored correctly
1752 (broken since 1.0.6). This bug would generally show up as the
1753 Slime debugger highlighting the wrong form when the sldb-show-source
1755 * bug fix: Branch forms are again annotated as branches in the sb-cover
1757 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1758 on x86-64. (reported by Gregory Vanuxem)
1759 * bug fix: EQUALP could return wrong results for structures with raw
1760 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1761 word). (reported by Vjacheslav Fyodorov)
1762 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1765 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1766 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1767 atomic compare-and-swap operations on threaded platforms.
1768 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1769 allows assigning a global minimum value to optimization qualities
1770 (overriding proclamations and declarations).
1771 * enhancement: closed over variables can be stack-allocated on x86
1773 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1775 * optimization: slot definition lookup is now O(1). This speeds up
1776 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1777 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1778 * optimization: ASSOC and MEMBER can now be open-coded for all
1779 combinations of keyword arguments when second argument is constant
1780 and SPEED >= SPACE. In other cases a specialized version is
1782 * bug fix: using obsoleted structure instances with TYPEP and
1783 generic functions now signals a sensible error.
1784 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1785 (reported by Kristoffer Kvello)
1786 * bug fix: backtrace construction is now more careful when making
1787 lisp-objects from pointers on the stack, to avoid creating bogus
1788 objects that can be seen by the GC.
1789 * bug fix: defaulting of values in contexts expecting more than 7
1790 variables now works on x86-64. (reported by Christopher Laux)
1791 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1793 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1794 as the property-list of a symbol.
1795 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1796 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1797 situations requested, are once again file-compileable. (reported
1800 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1801 * MOP improvement: support for user-defined subclasses of
1802 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1803 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1804 the expansion of DEFMETHOD, is responsible for generating a form
1805 which creates a list of specializers when evaluated. Additional
1806 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1807 debugging and introspective support.
1808 * minor incompatible change: the (unsupported) spinlock interface
1809 has changed: free spinlock now has the value NIL, and a held spinlock
1810 has the owning thread as its value.
1811 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1812 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1814 * enhancement: name of a socket-stream is now "a socket" instead of
1815 "a constant string".
1816 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1817 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1818 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1819 for generic functions. (Thanks to Tobias C. Rittweiler)
1820 * optimization: bignum printing speed has been improved by 20-40%
1821 (depending on the bignum size.)
1822 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1824 * bug fix: the cache used by the CLOS to store precomputed effective
1825 methods, slot offsets, and constant return values is now thread and
1827 * bug fix: generic function dispatch function updating is now thread
1828 and interrupt safe (in the sense that the known issues have been
1830 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1831 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1832 * bug fix: asdf systems with dependencies to the SB-POSIX or
1833 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1834 * bug fix: interrupt safety of applicable method computation has been
1837 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1838 * new contrib: sb-cover, an experimental code coverage tool, is included
1839 as a contrib module.
1840 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1841 significantly faster.
1842 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1843 produce more efficient code on x86-64 if the compiler can determine
1844 that (+ INDEX <constant>) does not require a bounds check and FOO
1845 has an element type at least 8 bits wide.
1846 * enhancement: a new, experimental synchronous timeout facility is
1847 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1848 * enhancement: when a symbol name conflict error arises, the
1849 conflicting symbols are always printed with a package prefix.
1850 (thanks to Kevin Reid)
1851 * enhancement: stepping is now once again supported on the SPARC and
1852 MIPS platforms. (It is also now more likely to work on CheneyGC
1854 * enhancement: sb-sprof can now also track and report accurate call
1856 * bug fixes: the treatment of non-standard subclasses of
1857 SB-MOP:SPECIALIZER is more correct.
1858 * incompatible change: PURIFY no longer copies the data from the
1859 dynamic space into the static and read-only spaces on platforms
1860 that use the generational garbage collector
1861 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1863 * bug fix: GC race condition occasionally resulting in crashes with
1864 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1866 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1868 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1869 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1870 * bug fix: an asynchronous interrupt could previously leave the
1871 system running with GC inhibited.
1872 * bug fix: a DECLARE form evaluated at top-level now causes an error
1873 rather than silently (or verbosely) returning NIL.
1874 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1875 result in a error being signalled due to source form lookup errors.
1876 (reported by Peter Graves)
1878 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1879 * incompatible change: removed writer methods for host-ent-name,
1880 host-ent-addresses -- changing the values did not update the DNS
1882 * minor incompatible change: changed experimental JOIN-THREAD interface
1883 * documentation: the manual now lists reader and writer methods
1884 in class slot documentation sections. (thanks to Richard M Kreuter)
1885 * documentation: unwinding from asyncronous events has been
1886 documented as unsafe.
1887 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1888 in multithreaded application code.
1889 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1890 platforms. (thanks to James Anderson for the optimization hint)
1891 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1893 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1894 variants no longer cons.
1895 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1896 their NOT- variants no longer cons.
1897 * optimization: EQUAL hash tables no longer use SXHASH for objects
1898 of all data types, but instead use an EQL hash for types for which
1899 EQUAL is the same as EQL.
1900 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1901 are significantly faster.
1902 * optimization: new STRING-OUTPUT-STREAM implementation is much
1903 faster for large outputs and conses 30% less on average.
1904 * enhancement: XREF information is now collected for references made
1905 to global variables using SYMBOL-VALUE and a constant argument.
1906 * enhancement: SIGINT now causes a specific condition
1907 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1908 * bug fix: FILE-POSITION used to signal an error in some cases where
1909 ANSI requires it to return NIL.
1910 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1911 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1912 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1914 * bug fix: bad type declaration in the CLOS implementation has
1915 been fixed. (reported by James Anderson)
1916 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1917 (thanks to Lutz Euler)
1918 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1919 required by the CLHS. (reported by Samium Gromoff)
1920 * bug fix: dead unbound variable references now signal an error.
1921 (reported by Marco Monteiro)
1922 * bug fix: / with an unused value was being deleted in safe code.
1923 (thanks to Marco Monteiro and Kevin Reid)
1924 * bug fix: number of characters that can be written onto a single
1925 line in a file is unlimited.
1926 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1927 been fixed by inhibiting interrupts for when GC is disabled.
1928 * bug fix: some interrupt safety issues with GETHASH, (SETF
1929 GETHASH), CLRHASH and REMHASH have been fixed.
1930 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1931 specifier no longer causes infinite recursion.
1932 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1933 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1934 * bug fix: an &environment argument with the correct variable information
1935 is passed to macros that are expanded during byte compilation.
1936 (reported by Samium Gromoff)
1937 * bug fix: a logic error was causing the hash function for bignums to
1938 have excessive amounts of collisions. (reported by Faré Rideau)
1939 * bug fix: modifying the contents of an array could change the return
1940 value of SXHASH on that array, which is only allowed for strings
1941 and bit vectors. (bug introduced in 0.9.16)
1942 * improvement: the x86-64/darwin port now passes all tests (except
1943 for the debugger tests) but should still be considered
1944 experimental until this is fixed.
1945 * improvement: a style-warning is signaled for CASE (etc) clauses with
1946 duplicate keys. (thanks to Kevin Reid)
1947 * improvement: macos/x86 and macos/x86-64 now use mach exception
1948 handlers for dealing with illegal instructions (for trapping and
1949 error handling) and memory protection violations (for GC).
1951 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1952 * new platform: experimental support for x86-64/darwin (MacOS).
1953 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1954 and getnameinfo sockets functions are used instead of gethostbyaddr
1955 and gethostbyname, on platforms where the newer functions are available.
1956 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1958 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1959 don't print the startup banner, but behave as if --noinform was passed
1960 as a command line argument. (thanks to Kevin Reid)
1961 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1962 * optimization: code using alien values with undeclared types is much faster.
1963 * optimization: the compiler is now able to open code SEARCH in more cases.
1964 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1965 * bug fix: using standardized COMMON-LISP special variables as loop
1966 variables no longer signals bogus package lock violations. (reported
1968 * bug fix: declaring local loop variables to be of a range-limited type
1969 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1970 (reported by Andras Simon)
1971 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1972 bugs remain on x86-64.)
1973 * bug fix: the #= and ## reader macros now interact reasonably with
1974 funcallable instances.
1975 * bug fix: type-checks for function arguments were compiled using the
1976 compiler policy settings of the wrong lexical environment (in 1.0.2
1978 * bug fix: SHADOW accepts characters as string designators, as required
1979 by the spec (thanks to Eric Marsden)
1980 * bug fix: fixed GC safety issues when foreign functions are called with
1981 non-base strings as arguments
1982 * bug fix: more consistent error output for fatal-compiler-warnings, like
1984 * bug fix: functions with proper names were showing up as NIL in
1985 backtraces (reported by Edi Weitz, regression in 1.0.2)
1987 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1988 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1989 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1990 produce more efficient code on the x86 if the compiler can determine
1991 that (+ INDEX <constant>) does not require a bounds check and FOO
1992 has an element type at least 8 bits wide.
1993 * bug fix: references to undefined variables are handled the same way
1994 in toplevel forms as in the normal compiler
1995 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1997 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1998 (thanks to Jon Buller)
1999 * improvement: faster compilation times for complex functions
2000 * improvement: added readlink support to SB-POSIX (thanks to Richard
2003 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2004 * improvement: experimental support for mach exception handling on
2005 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2007 * improvement: support for GBK external format.
2008 (thanks to Chun Tian (binghe))
2009 * improvement: the debugger now displays variables that have been closed
2010 over, in code compiled with (DEBUG 2) or higher
2011 * improvement: support for executable cores on NetBSD (thanks to
2013 * new feature: added a RESTART-FRAME debugger command
2014 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2015 be used to provide an implementation for FILE-POSITION on Gray streams
2016 (thanks to Eric Marsden)
2017 * new feature: add syslog, openlog and closelog support to SB-POSIX
2018 (thanks to Richard Kreuter)
2019 * optimization: the function call overhead in code compiled with
2020 a high DEBUG optimization setting is significantly
2021 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2022 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2023 (thanks to Tony Martinez)
2024 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2025 evaluated once (reported by Kevin Reid)
2026 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2027 works again (thanks to Kilian Sprotte)
2028 * bug fix: an error is signaled for tagbodies with duplicate tags
2029 (thanks to Stephen Wilson)
2030 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2031 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2032 stack frames from alien callbacks.
2033 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2034 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2035 65k pages (thanks to David Woodhouse)
2036 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2038 changes in sbcl-1.0.1 relative to sbcl-1.0:
2039 * new platform: FreeBSD/x86-64, including support for threading.
2040 * new feature: the compiler stores cross-referencing information
2041 about function calls (who-calls), macroexpansion (who-macroexpands)
2042 and special variables (who-binds, who-sets, who-references) for code
2043 compiled with (< SPACE 3). This information is available through the
2044 sb-introspect contrib.
2045 * new feature: users may subclass SEQUENCE, and have instances of
2046 these classes interoperate with standard Common Lisp functions if
2047 a number of methods are defined. (This feature is experimental
2048 and the interface subject to change based on feedback from SBCL
2049 users and the general community)
2050 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2051 x86/x86-64, rather than the previous fixed depth of 8
2052 * improvement: another pthread back-end of mutex "pthread-futex".
2053 * bug fix: non-ascii command-line arguments are processed correctly
2054 (thanks to Yaroslav Kavenchuk)
2055 * bug fix: non-required arguments were not passed correctly when a method
2056 defined using DEFMETHOD was called from a mop-generated method using
2057 CALL-NEXT-METHOD (reported by Pascal Costanza)
2058 * bug fix: recursion is now permitted in accessors through
2059 SLOT-UNBOUND. (reported by Pascal Costanza)
2060 * bug fix: an error was signaled at startup if the HOME environment
2061 variable was defined, but had an empty value (reported by Peter Van Eynde)
2062 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2063 signal a PROGRAM-ERROR, not a BUG.
2064 * bug fix: SB-POSIX:READDIR works when built with large file support.
2065 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2067 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2068 for better automatic indentation support. (thanks to Matt Pillsbury)
2069 * optimization: loading generic functions no longer takes O(n^2) time,
2070 proportional to the amount of methods in the generic function
2071 (reported by Todd Sabin and Jeremy Brown)
2072 * optimization: the FIND and POSITION family of sequence functions
2073 are significantly faster on arrays whose element types have been
2075 * improvements to the Windows port:
2076 ** Intermittent heap corruption problems have been fixed. (thanks
2077 to Alastair Bridgewater)
2078 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2080 ** Lisp is able to unwind foreign exception frames from alien
2081 callbacks. (thanks to Alastair Bridgewater)
2083 changes in sbcl-1.0 relative to sbcl-0.9.18:
2084 * improvement: experimental support for threading on FreeBSD/x86.
2085 (thanks to NIIMI Satoshi)
2086 * improvement: runtime option --dynamic-space-size can be used
2087 to set the size of the dynamic space reserved on startup.
2088 * improvement: floating point modes in effect are now saved in
2089 core, and restored on startup.
2090 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2091 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2092 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2093 threads are not running after *SAVE-HOOKS* have run.
2094 * improvement: writes to CLOS instance slots are type-checked in code
2095 compiled with (SAFETY 3)
2096 * improvement: floating-point exception handling on FreeBSD (thanks to
2098 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2099 (thanks to Zach Beane)
2100 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2102 * improvement: added support for the Shift-JIS external format.
2103 (contributed by NIIMI Satoshi)
2104 * improvement: callbacks are supported on Linux/PPC. (thanks to
2106 * bug fix: compiler bug triggered by a (non-standard) VALUES
2107 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2108 * bug fix: file compiler no longer confuses validated and already
2109 dumped structurres. (reported by Kaersten Poeck)
2110 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2111 fill-pointer signals a type-error as required. (thanks to
2113 * bug fix: disassemly of funcallable instances works.
2114 * bug fix: single stepping on PPC.
2115 * bug fix: fix thread-safety problems in the type system (generally
2116 manifesting as nonsensical errors like "STRING is a bad type specifier
2117 for sequences" or "The value 1 is not of type FIXNUM")
2118 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2119 (reported by Josip Gracin)
2120 * bug fix: an error is signaled for attempts to displace arrays with
2121 incompatible element types (thanks to Mario Mommer)
2122 * bug fix: more correct handling of wide characters in debug info
2123 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2124 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2125 and don't cause extra consing
2126 * optimization: MAP and MAP-INTO are significantly faster on vectors
2127 whose elements types have been declared.
2128 * Improvements to SB-SPROF:
2129 ** Support for allocation profiling
2130 ** Reduced profiling overhead, especially for long profiling runs
2131 * Improvements to the Windows port:
2132 ** floating point exceptions are now reported correctly.
2133 ** stack exhaustion detection works partially.
2134 ** more accurate GET-INTERNAL-REAL-TIME.
2135 ** better RUN-PROGRAM behaviour in case of errors in the child
2137 ** PROBE-FILE now simplifies pathnames correctly.
2138 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2139 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2140 1st 1970 (although time timezone data will be unreliable).
2141 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2143 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2144 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2145 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2147 * bug fix: two potential GC deadlocks affecting threaded builds.
2148 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2149 returns T (reported by Anton Kazennikov)
2150 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2151 with non-variable places
2152 * bug fix: remove a race condition in the setting of
2153 funcallable-instance functions, this should make threaded CLOS
2154 code more stable against memory faults.
2155 * bug fix: corruption of specials when unbinding is interrupted by an
2156 asynchronous unwind (reported by Hannu Koivisto)
2157 * improvement: the debugger will now also display local variables that
2158 are only used once, for code compiled with a DEBUG optimization quality
2161 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2162 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2163 * incompatible change: External-format support for FFI calls. The
2164 SB-ALIEN:C-STRING no longer implies an ASCII
2165 external-format. Instead the string is subject to external-format
2166 conversion. Additionally return values of type SB-ALIEN:C-STRING
2167 are by default of type (SIMPLE-ARRAY CHARACTER), not
2168 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2169 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2170 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2171 * incompatible change: SB-EXT package no longer contains the
2172 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2173 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2175 * incompatible change: the single-stepper is no longer available
2176 on Alpha, Mips and Sparc platforms.
2177 * minor incompatible change: the direct superclasses of
2178 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2179 not (STANDARD-OBJECT FUNCTION). This makes the
2180 class-precedence-lists of GENERIC-FUNCTION and
2181 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2183 * minor incompatible change: the default stream external format on
2184 non-unicode SBCL is no longer detected from the locale, but is always
2186 * new feature: Add a version of evaluator that uses an interpreter instead
2187 of the compiler. EVAL still uses the compiler by default, to switch it
2188 to use the interpreter, set the value of the variable
2189 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2190 * minor incompatible change: the single-stepper REPL has been merged
2191 with the normal debugger (see the "Stepping" heading of the debugger help
2192 for more details). The debugger command STEP will no longer switch
2193 to the single-stepper REPL.
2194 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2195 for a type now works.
2196 * bug fix: loading of default sysinit file works. (thanks to Leonid
2198 * bug fix: better detection of circularities in the file-compiler.
2199 (reported by Marco Monteiro)
2200 * bug fix: the CL pathname functions now work with files that have
2201 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2202 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2203 systems with Unix98 pty semantics.
2204 * bug fix: ASDF-INSTALL will now work with bsd tar.
2205 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2207 * bug fix: timers expiring in dead threads no longer cause a
2208 type-error (reported by Paul "Nonny Mouse").
2209 * bug fix: thanks to more lightweight single-stepper instrumentation,
2210 code compiled with (DEBUG 3) will compile and execute significantly faster,
2211 and will have more accurate type-inferencing than before
2212 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2213 whose bindings are modified
2214 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2215 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2216 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2217 CL:SOFTWARE-VERSION with proper version
2219 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2220 * feature: implemented the READER-METHOD-CLASS and
2221 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2222 as specified by AMOP.
2223 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2225 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2226 (thanks to Lutz Euler)
2227 * optimization: hashing of general arrays and vectors has been
2228 improved. (reported by Any Fingerhut)
2229 * enhancement: SB-INTROSPECT is now able to find definitions of
2230 profiled functions. (thanks to Troels Henriksen)
2231 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2232 as well, allowing compiler-macros for SETF-functions to expand.
2233 * enhancement: step-instrumentation no longer wraps known
2234 single-value functions with multiple-value context, allowing
2235 better type inference.
2236 * fixed bug #337: use of MAKE-METHOD in method combination now works
2237 even in the presence of user-defined method classes. (reported by
2238 Bruno Haible and Pascal Costanza)
2239 * fixed bug #339(c): if there are applicable methods not part of any
2240 long-form method-combination group, call INVALID-METHOD-ERROR.
2241 (reported by Bruno Haible)
2242 * fixed bug #361: the :FUNCTION initarg in the protocol for
2243 initialization of methods can now be used to override
2244 internally-produced optimized functions. (reported by Bruno
2246 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2247 system-provided lambda expression no longer cause warnings about
2248 unbound #:|pv-table| symbols.
2249 * bug fix: improved the handling of type declarations and the
2250 detection of violations for keyword arguments with non-constant
2252 * bug fix: potentially erronous calls to PATHNAME and
2253 MERGE-PATHNAMES were being flushed in some cases.
2254 (reported by Richard Kreuter)
2255 * bug fix: compiled calls to TYPEP were mishandling obsolete
2256 instances. (reported by James Bielman and Attila Lendvai)
2257 * bug fix: format strings with ~> without matching ~< no longer
2258 trigger an AVER, but signal an understandable error instead.
2259 (reported by Antonio Martinez)
2260 * bug fix: specifying an output-file without a pathname-type for
2261 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2262 of input-file instead of "fasl". (reported by Robert Dodier)
2263 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2264 (reported by James Y Knight).
2265 * bug fix: compiler-macros-function did not consider the environment
2266 argument for shadowing by local functions.
2267 * bug fix: compiler-macros expansion was inhibited by local INLINE
2269 * bug fix: inline expansions of known functions were subject to
2270 step-instrumentation in high debug policies, leading to problems
2271 with type-inference.
2272 * bug fix: compiler failed to differentiate between different CONS
2273 types in some cases.
2274 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2275 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2276 * bug fix: #368: incorrect use of expressed vs. upgraded array
2278 * bug fix: #306a: more precise unions of array types.
2279 * thread-safety improvements:
2280 ** CONDITION-WAIT could return early on Linux, if the thread was
2281 interrupted and subsequently continued with SIGCONT.
2282 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2284 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2285 * added support for the ucs-2 external format. (contributed by Ivan
2287 * minor incompatible change: pretty printing of objects of type
2288 (cons symbol) is, in the default pprint-dispatch-table, now
2289 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2291 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2292 called later in a class's lifetime, possibly as late as when the
2293 first instance of the class is created. Previously,
2294 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2295 class became finalizeable.
2296 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2297 for multibyte external-format streams. (thanks to "vbzoli")
2298 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2299 with :ALLOCATION :CLASS inherited from superclasses of the
2301 * fixed bug: anonymous classes can now be created using the :NAME
2302 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2303 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2304 * fixed bug: core-files saved with :EXECUTABLE T can again be
2305 executed when SBCL_HOME isn't set. (reported by James Knight)
2306 * fixed bug: toplevel LOCALLY forms with declarations could
2307 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2308 * fixed bug: printing from several different threads using different
2309 values of *print-case* could cause invalid output, due to
2310 some internal special variables of the printer not being bound
2311 thread-locally (reported by Max Mikhanosha)
2312 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2313 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2314 (reported by Pascal Costanza)
2315 * fixed bug: FINALIZE-INHERITANCE is called from
2316 REINITIALIZE-INSTANCE on classes when the class has previously
2317 been finalized, as required by AMOP.
2318 * minor code generation optimizations:
2319 ** better register allocation in CLOS dispatching functions
2320 ** overflow detection when coercing signed bytes to fixnums on x86-64
2321 ** is now implemented with one IMUL instruction instead of three shifts
2322 ** more efficient bit-vector access on x86 and x86-64
2323 ** more efficient access to raw structure slots on x86 and x86-64
2324 * fixed some bugs revealed by Paul Dietz' test suite:
2325 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2326 return its argument.
2328 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2329 * feature: thread support on Solaris/x86, and experimental thread support
2331 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2333 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2334 default method for SLOT-UNBOUND.
2335 * minor incompatible change: prevent the user from specializing the
2336 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2337 somewhat counter to the intent of the protocol, I (CSR) think, and
2338 additionally it just doesn't work in SBCL as currently
2339 implemented, thanks to optimizations (that are always valid for
2340 the other three SLOT-VALUEish functions, but not for the setter).
2341 * minor incompatible change: the :SB-LDB feature is now enabled by
2342 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2343 the low-level debugger.
2344 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2345 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2346 down to an SB-SYS:FD-STREAM, allowing direct communication in
2347 more cases. Temporary files and pipes are still used as a fallback
2349 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2350 on the non-reentrant C functions localtime(3) and gmtime(3).
2351 * bug fix: global optimization policy was not visible in LOCALLY and
2353 * bug fix: class objects can be used as specializers in methods.
2354 (reported by Pascal Costanza)
2355 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2356 with a type error. (reported by blitz_ on #lisp)
2357 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2358 failed with a type error. (reported by Pascal Bourguignon)
2359 * bug fix: merging pathnames against defaults with :DIRECTORY
2360 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2361 (reported by James Y Knight)
2362 * bug fix: saving large (>2GB) cores on x86-64 now works
2363 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2364 constant index and a (simple-array (signed-byte 32)) array
2365 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2366 error (patch by Robert J. Macomber)
2367 * feature: TIME now displays the amount of run-time spent in GC
2368 * bug fix: The debugger now does a better job of respecting
2369 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2370 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2371 workaround for bug 403.)
2372 * bug fix: floating point exception handling now works on FreeBSD
2373 (thanks to NIIMI Satoshi)
2374 * fixed some bugs revealed by Paul Dietz' test suite:
2375 ** MISC.641: LET-conversion were not supposed to work in late
2377 * improvements to the Win32/x86 port:
2378 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2379 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2381 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2382 * new feature: source path information is generated for macro-expansion
2383 errors for use in IDE's like Slime (thanks to Helmut Eller)
2384 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2385 * bug fix: compiler does not loop forever on an invalid type in
2387 * improvement: compilation of most CLOS applications is significantly
2389 * optimization: added a limited bytecode compiler for simple toplevel
2390 forms, speeding up compilation and FASL loading
2391 * bug fix: the statistical profiler now properly distinguishes anonymous
2394 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2395 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2396 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2397 into subclasses of the finalized class. Now user calls to
2398 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2399 system return before any subclasses are finalized.
2400 * minor incompatible change: The reader no longer ignores errors
2401 regarding non-existent packages in #+ and #- feature tests.
2402 * new feature: command line options --no-sysinit, --no-userinit to
2403 inhibit loading the corresponding init files
2404 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2405 for sending data through UDP sockets (thanks to François-René Rideau)
2406 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2407 error is signalled instead (thanks to François-René Rideau)
2408 * minor incompatible change: Error signalling behaviour of lexical
2409 operations violating package locks has changed slightly. Refer to
2410 documentation on package locks for details.
2411 * enhancement: EVAL can process IF-expressions without resorting to the
2413 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2414 constant-folded properly due to missing out-of-line functions.
2415 (reported by Mika Pihlajamäki)
2416 * bug fix: LISTEN sometimes returned T even in cases where no data was
2417 immediately available from the stream
2418 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2419 were reversed. (reported by Levente Mészáros)
2420 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2421 when given a vector displaced to an adjustable array. (reported
2423 * bug fix: derivation of float boundaries from numbers outside the
2424 appropriate float range (reported by John Wiseman)
2425 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2427 * bug fix: precomputing cache entries for generic functions with
2428 some subclasses of specializers as yet invalid does not attempt to
2429 fill a cache line with a negative offset. (reported by Levente
2431 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2432 allow condition class objects as arguments to DOCUMENTATION and
2433 (SETF DOCUMENTATION); only find and set documentation for
2434 structure names for the STRUCTURE doc-type. (suggested by Gary
2436 * improvements to the Win32/x86 port:
2437 ** (user-homedir-pathname) and default initialization file
2438 locations now know about the user's "Documents and Settings"
2439 directory (thanks to Yaroslav Kavenchuk)
2440 ** run-program is implemented (thanks to Mike Thomas)
2441 ** sockets support (thanks to Timothy Ritchey)
2442 ** better backtrace support (thanks to Alastair Bridgewater)
2443 ** sb-grovel supported
2444 ** asdf-install and sb-posix work somewhat
2445 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2446 * improvements to the Solaris/x86 port:
2447 ** works on Solaris 11/Solaris Express
2448 ** floating-point exception handling support
2449 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2450 * fixed some bugs revealed by Paul Dietz' test suite:
2451 ** REMOVE-METHOD returns its generic function argument even when
2452 the method is not one of the generic functions' methods.
2453 ** objects declared as MEMBER types can be admissible arguments to
2454 structure accessors.
2455 ** printing characters should simply be printed by the FORMAT ~:C
2457 ** compiler failure when compiling functions with hairy constant
2458 defaults for optional parameters.
2459 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2460 function, which is already optimized.
2462 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2463 * new platform: experimental support for SBCL x86/Darwin, including
2464 MacOS X 10.4.5 on Intel.
2465 * new feature: Unicode character names are now known to the system
2466 (through CHAR-NAME and NAME-CHAR).
2467 * new feature: the filesystem location of SBCL's core file is
2468 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2469 * minor incompatible change: the contrib modules SB-POSIX and
2470 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2471 this change is to make it easier to distribute
2472 location-independent binaries.
2473 * bug fix: as implied by AMOP, standardized classes no longer have
2474 slots named by external symbols of public packages. (reported by
2476 * optimization: calling functions via constant symbols -- as in
2477 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2478 via the function object as in (FUNCALL #'FOO).
2479 * optimization: on x86 and x86-64, the calling convention for the
2480 case of dealing with an unknown number of values has been altered
2481 to be friendlier to the prediction heuristics implemented,
2482 particularly with reference to CALL and RET pairing. (thanks to
2483 Alastair Bridgewater)
2484 * optimization: on x86, the code for access to thread-local symbol
2485 values and binding/unbinding of thread-local symbols is smaller.
2486 (thanks to Alastair Bridgewater)
2487 * enhancement: CONSTANTP is now able to determine constantness of
2488 more complex forms, including calls to constant-foldable standardized
2489 functions and some special forms beyond QUOTE.
2490 * fixed bug: occasional GC crashes on Solaris/x86
2491 * optimization: x86-64 supports stack allocation of results of simple
2492 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2493 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2494 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2495 (thanks to James Knight)
2496 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2497 by the standard (thanks to Stephen Compall)
2499 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2500 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2501 be used for bundling the runtime and the core file into one
2502 executable binary. This feature is not currently supported on all SBCL
2503 platforms. (thanks to James Bielman and NIIMI Satoshi)
2504 * new feature: a generational or ephemeral garbage collector is now
2505 the default on the PowerPC platform (both Linux and Darwin). The
2506 old Cheney (stop and copy) collector is a build-time option.
2507 (thanks to Cyrus Harmon, after Raymond Toy)
2508 * minor incompatible change: the method by which SBCL finds its
2509 contributed modules has changed; it no longer relies on symbolic
2510 links from an $SBCL_HOME/systems directory, but searches directly
2511 in the subdirectories of $SBCL_HOME.
2512 * enhancement: the dynamic heap size on the Linux/PPC platform is
2513 markedly larger, even using the older Cheney garbage collector.
2514 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2515 certain complicated string types. (reported by Gary King)
2516 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2517 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2518 * fixed bug: DOCUMENTATION on structures no longer signals an
2519 error if no structure type of the right name exists. (reported by
2521 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2522 applicable non-standard primary or :AROUND method on
2523 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2524 no longer cause unbound variable errors. (reported by Kevin Reid)
2525 * fixed bug: metacircle resolution in cases where methods have slots
2526 added before the slots from STANDARD-METHOD. (reported by Jean
2528 * fixed bug: the Power PC assembly code for calling into lisp
2529 sometimes computed its return address wrongly (depending on the
2530 15th bit of the address, fixed at link time). This used to
2531 manifest itself in a segmentation violation while building PCL.
2532 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2533 many others over the years)
2534 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2535 the stack pointer (treated as a signed integer) is negative.
2536 (thanks to Peter van Eynde)
2538 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2539 * new platform: experimental support for the Windows operating
2540 system has been added. (thanks to Alastair Bridgewater)
2541 * fixed several bugs in and robustified the PPC FFI (including
2542 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2543 * bug fix: allow non-simple string symbol names (reported by Paul
2545 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2547 * bug fix: saving a core corrupted callbacks on x86/x86-64
2548 * bug fix: closed a loophole in metacircularity detection and
2549 grounding in the PCL implementation of CLOS.
2550 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2551 (reported by tomppa on #lisp)
2552 * bug fix: clear the direction flag on Lisp -> C transitions, as
2553 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2554 (reported by Andrej Grozin and Hendrik Maryns)
2555 * optimization: major improvements to GC efficiency on GENCGC platforms
2556 * optimization: faster implementation of EQUAL
2557 * optimization: emit more efficient opcodes for some common
2558 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2559 * optimization: several other minor code-generation improvements on x86-64
2560 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2562 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2563 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2564 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2565 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2566 by ANSI as a generic function, and for consistency (SETF
2567 GENERIC-FUNCTION-NAME) is treated likewise.
2568 * fixed bug #233.b: make constraint propagation notice when a variable
2569 value is changed after it is referenced but before it is used
2570 * fixed bug #296: no more arbitrary behaviour from filenames with
2571 odd characters as --load arguments. (reported by Adam Warner)
2572 * fixed bug #390: :CHARACTER-SET pathname components now work as
2573 expected. (reported by Tim Daly Jr)
2574 * fixed bug #391: complicated :TYPE intersections in slot
2575 definitions no longer cause an error in PCL internals.
2576 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2577 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2578 returning the number of octets which would be written to the
2579 file-stream. (thanks to Robert J. Macomber)
2580 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2581 arguments to the internal stream functions. (thanks to David
2583 * bug fix: stack exhaustion is now handled on the x86/SunOS
2584 platform. (thanks to Daisuke Homma)
2585 * bug fix: more accurate ROOM results on GENCGC platforms
2586 * optimization: improved type inference for arithmetic-for
2587 index variables in LOOP
2588 * optimization: faster floating-point SQRT on x86-64
2589 * fixed some bugs revealed by Paul Dietz' test suite:
2590 ** DOCUMENTATION returns NIL instead of "" for method combinations
2591 that don't have a docstring
2593 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2594 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2595 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2596 therefore are not customizeable by user code (as seems to be at
2597 least permitted and maybe required by AMOP). As a consolation,
2598 however, the SBCL implementation of these functions now calls
2599 REINITIALIZE-INSTANCE as specified by AMOP.
2600 * bug fix: slot-definition documentation is propagated as per ANSI
2601 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2602 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2603 argument, as do eslotd initialization methods. (from Pascal
2604 Costanza's "Closer" project)
2605 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2606 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2608 * bug fix: it is now possible to have more than one subclass of
2609 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2610 (reported by Bruno Haible, Pascal Costanza and others)
2611 * bug fix: the dependent update protocol now works for generic
2612 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2613 and Pascal Costanza)
2614 * bug fix: condition-class instances corresponding to
2615 DEFINE-CONDITION forms are now created eagerly. (reported by
2616 Kalle Olavi Niemitalo on comp.lang.lisp)
2617 * bug fix: floating point printing is more accurate in some
2618 circumstances. (thanks to Simon Alexander)
2619 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2620 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2621 * bug fix: callbacks on OS X now preserve stack-alignment.
2622 (thanks to Cyrus Harmon)
2623 * enhancement: the x86-64 disassembler is much better at
2624 disassembling SSE instructions. (thanks to Lutz Euler)
2625 * enhancement: CHECK-TYPE on a variable now allows type-inference
2626 (thanks to Vincent Arkesteijn)
2627 * optimization: improved performance of EUC-JP external format.
2628 (thanks to NIIMI Satoshi)
2629 * optimization: performance improvements to IO on file streams of
2630 :ELEMENT-TYPE CHARACTER
2631 * optimization: much faster memory allocation on x86-64
2632 * optimization: faster garbage collections (latency and throughput)
2634 * optimization: faster bignum subtraction and division on x86 and x86-64
2635 (thanks to Lutz Euler)
2636 * optimization: more accurate type-inference for loops that use a
2637 floating point index variable or a negative step.
2639 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2640 * bug fix: add a workaround to SBCL looping infinitely at startup on
2641 Linux kernels with apparently buggy implementations of personality().
2642 (thanks to Svein Ove Aas)
2643 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2644 (thanks to David Lichteblau)
2645 * bug fix: local bindings shadow global symbol macros for
2646 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2647 * optimization: non-open coded uses of numeric comparison operators
2648 (e.g. >) no longer cons when called with more than one parameter
2649 on platforms supporting dynamic-extent allocation.
2650 * enhancement: saving cores with foreign code loaded is now supported
2651 on MIPS/Linux in addition to the previously supported platforms.
2652 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2653 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2654 * bug fix: division by zero in sb-sprof when no samples were collected
2655 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2656 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2657 (thanks to Alexander Kjeldaas)
2658 * new feature: ignoring the return values of destructive functions
2659 like NREVERSE signals a compile-time style-warning.
2660 (thanks to Kevin Reid)
2661 * new feature: the alignment of alien structure fields can be
2662 explicitly specified. (thanks to Cyrus Harmon)
2663 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2664 and dump core on SIGQUIT
2666 ** incompatible change: threads do not inherit values of specials
2667 from their parents (see manual)
2668 ** bug fix: threads stacks belonging to dead threads are freed by the
2669 next exiting thread, no need to gc to collect thread stacks anymore
2670 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2671 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2672 ** bug fix: dynamic variable and thread start related gc lossage
2673 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2675 * fixed some bugs revealed by Paul Dietz' test suite:
2676 ** SUBTYPEP is slightly more accurate on heinously complicated
2677 CONS types where some of the members have uncertain (in the
2678 NIL, NIL sense) type relationships to each other.
2680 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2681 no longer purified unless :PURIFY T is explicitly specified.
2682 ** Non-purified cores are significantly smaller than before
2684 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2685 * new feature: timers based on Zach Beane's excellent timer package
2686 * added support for the following external formats: koi8-u,
2687 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2688 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2689 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2690 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2691 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2692 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2693 * incompatible change: a threaded SBCL will no longer revert to
2694 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2695 * bug fix: interrupts are disabled until startup is complete; no
2696 more sigsegvs when receiving a signal to soon
2697 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2699 * bug fix: add a workaround for the memory randomization features in
2700 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2701 workaround will only be in effect on systems with the proc filesystem
2703 * bug fix: printing objects of type HASH-TABLE signals a
2704 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2706 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2707 have been running for over 50 days. (reported by Gilbert Baumann)
2708 * bug fix: the logic for getting names of functions gets less
2709 confused when confronded with alternate-metaclass
2710 funcallable-instances. (reported by Cyrus Harmon)
2711 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2712 consistent, even on internal alternate-metaclass objects.
2713 * bug fix: flush closure information collected by physical
2714 environment analysis prepass before the main pass. (bug reported
2716 * bug fix: compiler pack phase does not modify a hashtable, which is
2717 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2718 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2719 may be expanded. (reported by Alexander <malishev> on c.l.l)
2720 * bug fix: no more style-warnings when compiling code using LAST
2721 under high-SPEED low-SPACE settings. (reported by David Wallin
2723 * fixed some incompatibilities between SBCL's MOP and the MOP
2725 ** the METAOBJECT class is now implemented;
2726 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2727 STANDARD-OBJECT, as required;
2728 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2729 now compatible (as required by VALIDATE-SUPERCLASS); there
2730 remains a consistency requirement over the presence or absence
2731 of the FUNCTION class in the superclass list of finalized
2732 classes; see the manual for more details;
2733 ** the :AROUND method for COMPUTE-SLOTS on
2734 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2735 requested slot ordering.
2737 ** bug fix: parent thread now can be gc'ed even with a live
2739 ** bug fix: binding a special with PROGV to no value is not
2740 the same as that symbol not having been bound (thanks to
2742 ** bug fix: binding specials is thread safe (thanks to
2744 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2745 and SB-SPROF do not die with 'no handler for signal XX in
2746 interrupt_handle_now(..)' anymore
2747 ** bug fix: WITH-TIMEOUT works with multiple running threads
2748 * fixed some bugs revealed by Paul Dietz' test suite:
2749 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2750 the :method-class keyword argument.
2752 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2753 * new port: the Solaris operating system on x86 processors is now
2754 mostly supported, though some rough edges in the environment
2755 remain. (thanks to Daisuke Homma)
2756 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2757 space for its heap. (thanks to Thiemo Seufer)
2758 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2759 closures. (thanks to Thiemo Seufer)
2760 * minor incompatible change: eof selects abort in the debugger.
2761 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2762 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2764 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2765 deprecated, and will go away in a future revision of SBCL.
2766 * minor incompatible change: GC-ON and GC-OFF are no longer
2767 implemented with a counter, it does not matter how many times gc
2768 is switched on or off
2769 * bug fix: discriminating functions for generic function classes
2770 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2771 make invalid assumptions about method precedence order. (reported
2773 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2774 platforms. (thanks to Thiemo Seufer)
2775 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2776 * bug fix: correct pathname printing with printer escaping is on.
2777 (thanks to Kevin Reid)
2778 * bug fix: complex VOP definitions in "user-space" no longer trigger
2779 package locks. (reported by Zach Beane)
2780 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2781 for funcallable-instance functions, and is no different from
2783 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2784 characters in the current readtable. (reported by Nicholas Neuss)
2785 * bug fix: SUBTYPEP on various CONS types returns more a more
2786 accurate acknowledgment of its certainty.
2787 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2788 lists in some cases. This partially fixes bug 384.
2789 * flush all standard streams before prompting in the REPL and the
2791 * bug fix: signal handling and triggering gc do not conflict
2792 directly anymore, in particular a high frequency sb-sprof does
2793 not prevent gc from running
2794 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2795 approximation for timezone and DST information between the
2796 universal time epoch and the smallest negative 32-bit time_t.
2797 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2798 year 1899 so long as the encoded time is non-negative.
2799 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2800 the correct answer for non-constant rotate amounts when performing
2801 an inline 32-bit rotation.
2803 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2804 there is only one thread in the session
2805 ** bug fix: memory leak for streams created in one thread and
2806 written to in another
2807 ** bug fix: lockup when compiled with gcc4
2808 ** bug fix: race that allows the gc to be triggered when gc is
2810 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2811 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2813 ** bug fix: finished threads are gc'ed properly
2814 * fixed some bugs revealed by Paul Dietz' test suite:
2815 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2816 has arguments with a different set of applicable methods from
2817 the orignal arguments.
2818 ** The type error thrown by MAP now has a correct expected-type
2820 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2821 name a compiled function.
2822 ** Three MISC tests where a large bignum was improperly coerced to
2823 a float that couldn't represent that bignum during type
2824 derivation were fixed.
2825 ** SUBTYPEP can now handle types involving the negation of a
2826 list-form FUNCTION type.
2827 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2828 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2829 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2831 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2832 * New feature: Experimental support for bivalent streams: streams
2833 opened with :element-type :default now allow character and binary
2834 (unsigned-byte 8) I/O
2835 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2836 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2838 * bug fix: no more highly sporadic "couldn't check whether ~S is
2839 readable" when reading a stream and an interrupt hits in the middle
2840 of a select system call
2841 * compiler better recognizes complex arrays (reported by Eduardo
2843 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2844 for variables on SBCL built with linkage-tables. (reported by Luis
2846 * various error reporting improvements.
2847 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2848 (Thanks to Thiemo Seufer)
2849 * bug fix: nested reader invokations work correctly
2850 * bug fix: it is possible to have simultaneous references to foreign
2851 code and foreign data with the same name.
2853 ** added x86-64 support
2854 ** incompatible change: the threading api now works with thread
2855 objects instead of thread ids
2856 ** bug fix: threads are protected from signals and interruption when
2857 starting up or going down
2858 ** bug fix: a race where an exiting thread could lose its stack to gc
2859 ** bug fix: don't halt on infinite error in threads if possible
2860 ** fixed numerous gc deadlocks introduced in the pthread merge
2861 ** bug fix: fixed thread safety issues in read and print
2862 ** bug fix: debugger doesn't hang on session lock if interrupted at
2863 an inappropriate moment
2864 ** bug fix: run-program is now thread safe(r)
2865 ** bug fix: inner with-recursive-lock no longer releases the mutex
2866 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2867 * fixed some bugs revealed by Paul Dietz' test suite:
2868 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2869 EXPECTED-TYPE slots filled.
2870 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2872 ** MAKE-CONDITION accepts classes as type-designators.
2873 ** COMPILE may never return NIL.
2874 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2875 range before calling Unix time functions
2877 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2878 * numerous signal handling fixes to increase stability
2879 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2880 * minor incompatible change: we now correctly canonize default
2881 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2882 as per the MOP, rather than the historical (INITARG INITFUNCTION
2883 INITFORM). (reported by Bruno Haible)
2884 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2885 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2886 for more information.
2887 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2888 pathname is a directory pathname.
2889 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2890 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2892 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2893 :METACLASS argument in addition to a class name. (reported by
2894 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2895 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2896 (reported by Bruno Haible; patch from Gerd Moellmann)
2897 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2899 * bug fix: more cleanups to the floating point exception handling on
2900 x86-64 (thanks to James Knight)
2901 * bug fix: the compiler does not try to constant fold calls of
2902 COERCE and BIT-* functions when they return freshly constructed
2903 objects. (reported by Nikodemus Siivola and Paul Dietz)
2904 * optimization: improved the MIPS versions of generic (in the
2905 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2906 * optimization: direct conversion of (unsigned-byte 32) to floats on
2907 the PowerPC platform.
2908 * optimization: structure instances with raw slots now use less
2909 memory, and probably show better memory locality. (thanks to
2911 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2912 are treated as requests for stack allocation on the x86-64,
2913 Alpha-32, PPC and SPARC platforms.
2914 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2915 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2916 (thanks to Tony Martinez)
2918 ** gcing a dead thread can no longer lead to lockups
2919 ** threads block signals until they are set up properly
2920 ** errno is no longer shared by threads
2921 ** interrupt-thread restores the eflags register on x86
2922 ** fixed some lockups due to gc/thread interaction
2923 * fixed some bugs revealed by Paul Dietz' test suite:
2924 ** invalid dotted lists no longer raise a read error when
2925 *READ-SUPPRESS* is T
2926 ** signal an error if a symbol that names a declaration is used
2927 as the name of a type, or vice versa
2928 ** allow using the (declare (typespec var*)) abbreviation for
2929 (declare (type typespec var*)) with all type specifiers
2930 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2931 ** always return NIL from PPRINT-POP when OBJECT is NIL
2932 ** don't signal errors when pretty-printing malformed LABELS,
2933 FLET or MACROLET forms
2934 ** declarations in a DOLIST body are also in scope for the
2936 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2938 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2941 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2942 * fixed cross-compiler leakages that prevented building a 32-bit
2943 target with a 64-bit host compiler.
2944 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2945 opened with :IF-EXISTS :OVERWRITE.
2946 * fixed bug 281: error for an invalid qualifier in a short-form method
2947 combination method is not signalled until the faulty method is called.
2948 * bug fix: iteration variable type inferrer failed to deal with open
2949 intervals. (reported by Alan Shields)
2950 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2951 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2952 or more runtime options were provided to the sbcl binary.
2953 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2954 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2955 * optimization: there's now a fast-path for fixnum arguments in the
2956 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2957 * optimization: the code generated on x86-64 is more compact thanks
2958 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2959 * bug fix: floating-point exception handling now partly works on
2960 x86-64. (Thanks to James Knight)
2961 * improvement to the MIPS backend from Thiemo Seufer: C-style
2962 64-bit long long arguments and return values to alien functions
2964 * fixed some bugs revealed by Paul Dietz' test suite:
2965 ** the type-error signalled from WARN has a filled-in DATUM slot.
2966 ** the type-error required when a stream is not associated with
2967 a file has the stream as its datum.
2968 ** type-errors on single-floats on x86-64 no longer have
2969 :INVALID-OBJECT as the datum
2970 ** the type-errors signalled for invalid function names now have
2971 a correct expected type
2972 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2973 for structures defined with a :TYPE. Documentation strings for
2974 typed structures are no longer immediately discarded
2975 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2976 broadcast streams and synonym streams. FILE-LENGTH now also works
2977 on broadcast streams.
2979 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2980 * incompatible change: the --noprogrammer option, deprecated since
2981 version 0.7.5, has been removed. Please use the equivalent
2982 --disable-debugger option instead.
2983 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2985 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2986 inoperational for a while now) has been completely removed.
2987 * null lexical environments are now printed as #<NULL-LEXENV>,
2988 significantly reducing the amount of clutter in typical backtraces.
2989 * documentation on weak pointers, finalization, and after GC hooks
2990 has been added to the manual.
2991 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2992 as other specialized array types, is much faster. SUBSEQ and
2993 COPY-SEQ on such arrays have also been sped up.
2994 * optimization: EQL is now more efficient when at least other argument
2995 is known to be of type (OR FIXNUM (NOT NUMBER)).
2996 * fixed bug: the runtime is now less vulnerable to changes in the
2997 size of the SBCL object on OS X, and virtual memory is reserved for
2998 all spaces that need to be at a fixed address.
2999 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3000 * fixed bug: finalizers and after GC hooks that cause consing are now
3002 * fixed bug: compiler error messages and summaries are now printed to
3003 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3004 * fixed inference of the upper bound of an iteration variable.
3005 (reported by Rajat Datta).
3006 * fixed bug 211e: calling local functions with duplicated constant
3007 keyword argument no longer causes a bogus style warning about an
3009 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3010 ftype declaration to be disregarded. (reported by Dave Roberts)
3011 * fixed bug 373: caused by erronous compilation of references to alien
3012 variables in the runtime on ppc/darwin.
3013 * fixed bug 376: CONJUGATE type deriver.
3014 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3015 (reported by Baughn on #lisp)
3016 * a cross-compiler bug on non-x86 platforms has been identified and
3017 fixed. (thanks to Bruno Haible)
3018 * improvements to the MIPS runtime code for increased stability.
3019 (thanks to Thiemo Seufer)
3020 * increased the maximimum compact environment size to allow
3021 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3022 * partial workaround for bug 135: don't name the function we're
3023 calling for hairy cases of EVAL, so as not to accumulate one environment
3024 entry per call to EVAL. (reported by Kevin Reid)
3025 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3026 * optimization: type testing for non-vector arrays should be faster.
3027 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3029 * bug fix: setting 31st element of a bit vector to zero did not work
3031 * bug fix: redefining a class definition which failed due to a
3032 previous accessor / function clash now works (but see BUGS entry
3033 #380 for more problems in this area). (thanks to Zach Beane)
3034 * the long form of DEFINE-METHOD-COMBINATION disables method group
3035 checking when given a single method group with pattern *. (thanks
3037 * on x86 compiler supports stack allocation of results of simple
3038 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3039 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3040 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3041 * fixed some bugs related to Unicode integration:
3042 ** the restarts for recovering from input and output encoding
3043 errors only appear when there is in fact such an error to
3045 * fixed some bugs revealed by Paul Dietz' test suite:
3046 ** MISC.549 and similar: late transformation of unsafe type
3047 assertions into derived types caused unexpected code
3049 ** SCALE-FLOAT type deriver is less wrong.
3050 ** type derivers for EXP, LOG and similar functions compute result
3051 types for complex arguments better.
3052 ** (MISC.563) CONJUGATE type deriver works for very restricted
3054 ** out-of-line type testers for character strings are available.
3055 ** EQUAL compiler transform understands specialness of objects
3057 ** accessing double-floats stored on the stack now works on x86-64.
3058 ** debugger internals could sometimes create invalid lispobjs,
3059 resulting in GC crashes.
3060 ** MISC.548: type check weakening can convert required type into
3062 ** initialization forms for bindings are not in scope of free special
3065 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3066 * incompatible change: thread support for non-NPTL systems has
3067 been removed - locking is buggy and unreliable. A threaded
3068 SBCL build will now warn at startup and refuse to create
3069 new threads, unless futex support is detected in the kernel
3070 * incompatible change: the top level REPL now has only an ABORT
3071 restart associated with it, not TOPLEVEL and ABORT as it used to.
3072 TOP and TOPLEVEL are now available as debugger commands for
3073 returning to the top level.
3074 * incompatible change: forms evaluated in the REPL now use the
3075 global optimization policy.
3076 * incompatible change: user- and system-initialization files are
3077 no longer processed with LOAD, but by READ and EVAL; hence the
3078 global optimization policy, startup package, readtable, etc,
3080 * The .fasl file format number has been incremented because of
3081 various incompatible changes.
3082 * internal entry point details and argument counts no longer appear
3083 in backtraces unless explicitly requested by setting
3084 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3085 * built-in and standard functions no longer have names like "top
3086 level local call to FOO".
3087 * fixed bug 32: functions defined in non-null lexical environments
3088 now have more legible printed representation
3089 * fixed bug 33: functions defined in non-null lexical environemnts
3090 are now more amenable to inspection by INSPECT.
3091 * workaround for bug 354: XEPs no longer appear in backtraces unless
3092 explicitly requested.
3093 * fixed bug: receiving the signal which results from attempting to
3094 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3095 SIGBUS on other *BSDs) on architectures where the C stack is also
3096 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3097 to debugger confusion or wild instability. (reported by Cheuksan
3099 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3100 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3101 (reported by Lutz Euler)
3102 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3103 compiled code. (reported by Paul Dietz)
3104 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3105 specialized parameter to a method to something that is not TYPEP
3106 the specializer is now possible.
3107 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3108 face of package deletion.
3109 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3110 pathname. (reported by David Tolpin on c.l.l)
3111 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3112 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3113 STRING-STREAM and FILE-STREAM, respectively.
3114 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3115 than previously; in addition, its test suite is now run on build.
3116 (thanks to Luke Gorrie)
3117 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3118 * optimization: added a immediate representation for single-floats
3120 * fixed some bugs revealed by Paul Dietz' test suite:
3121 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3122 ** attempting to create a package with a colliding nickname causes
3123 correctable errors to be signalled.
3124 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3125 ** several x86-64 backend bugs related to sign-extension of immediate
3128 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3129 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3130 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3132 * fixed loading of multiply forward-referenced layouts.
3133 (thanks to Cheuksan Wang)
3134 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3135 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3136 (see COMPILE-FILE documentation for details of :PRINT option)
3137 * fixed bugs 19 and 317: fixed-format floating point printing is
3138 more accurate. This also fixes a bug reported by Adam Warner
3139 related to the ~@F format directive.
3140 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3142 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3143 dispatch table if the from-char is a dispatch macro character.
3144 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3145 by the wordsize no longer ignore the last word. (reported by Lutz
3147 * fixed bug in type checking of dynamic-extent variables. (reported
3149 * optimization: sequence traversal functions use their freedom to
3150 coerce function designators to functions.
3151 * optimization: code with many calls to CLOS methods specialized on
3152 CLOS classes has had redundant type checks removed.
3153 * optimization: added declarations to speed up operations that access
3154 the internal character database (for example STRING-UPCASE)
3155 * optimization: comparison operations between floats and sufficiently small
3156 fixnums no longer create extra rationals
3157 * fixed some bugs related to Unicode integration:
3158 ** portions of multibyte characters at the end of buffers for
3159 character-based file input are correctly transferred to the
3160 start of the buffer at the next read.
3161 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3162 passing it through to OPEN.
3163 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3164 argument given to internal calls to OPEN.
3165 ** the built-in comment readers (introduced by character sequences
3166 ";" and "#|") are more forgiving to encoding errors; they will
3167 STYLE-WARN and then attempt to resync the stream at a character
3168 boundary. (thanks to Teemu Kalvas)
3169 * fixed some bugs in the x86-64 port:
3170 ** Negative short int return values from c-calls are sign-extended
3172 ** The stack is aligned to 16-bytes for c-calls, as required by
3173 the ABI. (thanks to Cheuksan Wang)
3174 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3175 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3176 for enums. (thanks to Vincent Arkesteijn)
3177 ** Multiple small optimizations and bugfixes for floating point
3179 * fixed some bugs revealed by Paul Dietz' test suite:
3180 ** Space, Tab, Linefeed, Return and Page have the invalid
3181 secondary constituent character trait.
3182 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3184 ** WITH-INPUT-FROM-STRING should only update the index place on
3186 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3187 works more reliably.
3188 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3189 with one-dimensional arrays with fill pointers.
3190 ** TYPE-OF failed on a complex with an integer realpart and a
3192 ** compiler failure during type inference for the code of form
3193 (IF (EQL X (THE ...)) ...) (MISC.535).
3195 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3196 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3197 platform. The port supports 61-bit fixnums, large memory spaces
3198 and reloading shared object files.
3199 * enhancement: saving cores with foreign code loaded is now
3200 supported on ppc/Darwin in addition to the previously supported
3202 * enhancement: the statistical profiler now walks deeper into the
3203 call stack for more meaningful call-graphs and accrued time
3204 reports (x86/x86-64 only). It also now reports time spent in
3206 * enhancement: it is now possible to trace most individual methods
3207 of a generic function in addition to tracing the generic function
3209 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3211 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3212 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3213 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3214 produces an error. (thanks to Vincent Arkesteijn)
3215 * bug fix: NAMESTRING on pathnames with :WILD components in their
3216 directories works correctly. (thanks to Artem V. Andreev)
3217 * fixed bug 125: compiler preserves identity of closures. (reported
3219 * bug fixed: functions with &REST arguments sometimes failed with
3220 "Undefined function" when compiled with (DEBUG 3). (reported by
3222 * bug fix: overflow during compiling of setting element of a bit
3223 vector with constant index and value. (reported by Timmy Douglas)
3224 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3225 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3226 * on x86 compiler partially supports stack allocation of dynamic-extent
3228 * GO and RETURN-FROM do not check the extent of their exit points
3229 when compiled with SAFETY 0.
3230 * fixed some bugs related to Unicode integration:
3231 ** encoding and decoding errors are now much more robustly
3232 handled; it should now be possible to recover even from invalid
3233 input or output to the terminal. (thanks to Teemu Kalvas)
3234 ** provided a first cut at implementing STRING-TO-OCTETS and
3235 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3236 ** altered the SB-MD5 contributed module slightly, changing the
3237 interface just enough for it to be supportable for builds where
3238 lisp characters are not eight bits.
3239 * fixed some bugs revealed by Paul Dietz' test suite:
3240 ** the FORMATTER-generated functions for ~V[ conditionals require
3241 the correct number of arguments.
3242 ** READ-FROM-STRING returns the mandated second value when applied
3243 to displaced strings.
3244 ** the #\Rubout and #\Backspace characters are treated as invalid
3245 constituent characters by the tokenizer.
3247 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3248 * new feature: reloading changed shared object files with
3249 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3250 * new feature: references to foreign variables and functions
3251 can now be compiled and loaded before the corresponding shared
3252 object file is loaded, as long as the foreign definitions are
3253 available at runtime.
3254 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3255 supported. (thanks to Dan Debertin)
3256 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3257 just keywords. (thanks to Vincent Arkesteijn)
3258 * fixed bug #331: structure-class instances corresponding to
3259 DEFSTRUCT forms are now created eagerly.
3260 * fixed bug #345: backtraces from calls to undefined functions work
3261 on x86 as well. Related bug #61 is now also partially fixed on x86
3262 (backtraces from throws to unknown catch tags.)
3263 * bug fix: lambda-list parsing is now stricter vrt. order and number
3264 of lambda-list keywords.
3265 * bug fix: as specified by AMOP, an error is signalled if a
3266 class-option appears multiple times in a DEFCLASS form. (reported
3268 * bug fix: RANDOM can be compiled when the compiler derives the type
3269 of its numeric argument as a disjoint set of small integers.
3270 (reported by Paul Dietz)
3271 * bug fix: starting a core saved with shared objects loaded when
3272 those objects are not available no longer causes threaded SBCL to
3273 hang. (reported by Sean Ross)
3274 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3276 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3277 argument, which must always be NIL. (reported by Kalle Niemitalo)
3278 * bug fix: printing 1.0d+23 no longer results in an error.
3279 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3280 * bug fix: structure slot setters preserve evaluation order. (thanks
3282 * fixed some bugs related to Unicode integration:
3283 ** RUN-PROGRAM can allow its child to take input from a Lisp
3284 stream. (reported by Stefan Scholl)
3285 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3286 locales. (reported by Ken Causey)
3287 * fixed some bugs revealed by Paul Dietz' test suite:
3288 ** INCF, DECF and REMF evaluate their place form as specified in
3290 ** FORMATTER expands ~{ ~} iteration directives with V or #
3291 parameters correctly.
3292 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3293 consequent uses no arguments correctly.
3294 ** the system has a partial understanding of the (COMPLEX RATIO)
3296 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3299 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3300 * new feature: a build-time option (controlled by the :SB-UNICODE
3301 keyword feature, enabled by default) for building the system with
3302 support for the entire 21-bit character space defined by the
3304 * new feature: the system now has rudimentary external-format
3305 support; the primary user-visible change at this time is that
3306 characters with the high bit set (such as lower-case-e-acute) will
3307 print correctly to a terminal in a UTF-8 environment.
3308 * minor incompatible change: BASE-CHAR no longer names a class;
3309 however, CHARACTER continues to do so, as required by ANSI.
3310 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3311 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3312 has been moved to the SB-EXT package (temporarily re-exported from
3314 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3315 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3317 * fixed bug #351: better error-handlind and reporting for malformed
3319 * fixed bug #350: bignum-printing is now more memory-efficient,
3320 allowing printing of very large bignums, eg. (expt 2 10000000).
3321 (reported by Bruno Haible)
3322 * fixed bug #302: better primitive-type selection for intersection
3324 * fixed bug #308: non-graphic characters now all have names, as
3325 required. (reported by Bruno Haible)
3326 * bug fix: redefining a class with different superclasses now correctly
3327 removes it from the direct-subclasses of its previous superclasses.
3328 (reported by David Morse)
3329 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3330 new value now works. (reported by Bruno Haible)
3331 * bug fix: correct canonicalization of multiple non-standard slot
3332 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3333 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3334 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3335 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3336 now exists, an signals an error.
3337 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3338 during macroexpansion for non-iteration variables as well. (reported
3339 by Bruno Haible for CMUCL)
3340 * bug fix: Cyclic structures and unprintable objects in compiler
3341 messages no longer cause errors. (reported by Bruno Haible)
3342 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3343 and READ-FROM-STRING all now return a primary value of NIL if
3344 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3345 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3346 (reported by Bruno Haible for CMUCL)
3347 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3348 do not designate a condition. (reported by Bruno Haible for
3350 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3351 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3352 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3353 permitting resolution in favour of any of the conflicting symbols.
3354 (reported by Bruno Haible for CMUCL)
3355 * bug fix: EQUAL compiler optimizations is less aggressive on
3356 strings which can potentially compare true despite having distinct
3357 specialized array element types.
3358 * bug fix: unit enumerations can be defined without dividing by
3359 zero. (thanks to Vincent Arkesteijn)
3360 * FORMAT compile-time argument count checking has been enhanced.
3361 (report from Bruno Haible for CMUCL)
3362 * a partial workaround for the bug 262: the compiler does not try to
3363 inline-expand a local function doing RETURN-FROM from a deleted
3364 BLOCK. (thanks to Peter Denno for the bug report and to David
3365 Wragg for the simple test case)
3366 * fixed some bugs revealed by Paul Dietz' test suite:
3367 ** RENAME-PACKAGE allows all package designators as new package
3369 ** constraint propagation and lambda variable substitution are
3370 more cautious in dealing with partially deleted code.
3371 ** compiler sometimes lost reoptimization passes.
3372 ** CERROR, given a condition as condition designator, passes its
3373 remaining arguments to the continue format control without
3375 ** Case-altering FORMAT directives work correctly on non-ASCII
3377 ** The REAL type specifier handles bounds outside the floating
3378 point ranges without signalling FLOATING-POINT-OVERFLOW.
3379 ** Functions with IR1-transformations can create intercomponent
3380 references to global functions.
3381 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3383 ** FORMAT ~R treats a nil value for its first parameter correctly.
3385 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3386 * enhancement: saving cores with foreign code loaded is now
3387 supported on x86/NetBSD and sparc/Linux in addition to the previously
3388 supported platforms.
3389 * bug fix: on some platforms repeated installations caused multiple
3390 copies of HTML documentation to be installed -- should not happen
3391 any more. (reported by Stefan Scholl)
3392 * bug fix: parsing self-recursive alien record types multiple times
3393 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3394 original patch by Helmut Eller for CMUCL)
3395 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3396 (thanks to Richard Kreuter)
3397 * bug fix: defining classes whose accessors are methods on existing
3398 generic functions in other (locked) packages no longer signals
3399 bogus package lock violations. (reported by François-René Rideau)
3400 * bug fix: special variables as DEFMETHOD parameters no longer have
3401 associated bogus type declarations. (reported by David Wragg and
3403 * bug fix: read-write consistency on streams of element-type
3404 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3405 * bug fix: redefiniton of the only method of a generic function with
3406 no DEFGENERIC no longer emits a full WARNING. In addition,
3407 redefinition of generic functions with no DEFGENERIC to an
3408 incompatible lambda list now signals an error. (thanks to Zach
3410 * bug fix: DEFGENERIC now works even when there's a function of the
3411 same name in an enclosing lexical environment. (thanks to Zach
3413 * fixed compiler failure, caused by instrumenting code during
3414 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3415 * optimization: added loop analysis and improved register allocation
3416 * fixed some bugs revealed by Paul Dietz' test suite:
3417 ** POSITION on displaced vectors with non-zero displacement
3418 returns the right answer.
3419 ** (SIMPLE-STRING) is a valid type specifier for sequence
3421 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3423 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3424 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3426 ** The justification version of the FORMAT ~< directive treats
3427 non-zero minpad parameter correctly.
3429 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3430 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3431 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3432 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3433 the supported interface.
3434 * new feature: Single-stepping of code compiled with DEBUG 2 or
3435 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3436 * new feature: saving cores with foreign code loaded is now
3437 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3438 Timothy Moore's work for CMUCL)
3439 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3440 parameters to * instead of NIL if no initform is supplied.
3441 (reported by Johan Bockgaard)
3442 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3443 correctly when FUNCALL appears as the car of the form. Note:
3444 despite this FUNCALL forms are not currently subject to
3445 compiler-macro expansion. (port of Raymond Toy's fix for the
3446 same from CMUCL, reported by Johan Bockgaard)
3447 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3448 (thanks for Teemu Kalvas)
3449 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3450 case instead of terminating the iteration (thanks for Julian
3451 Squires, Sean Champ and Raymond Toy)
3452 * bug fix: incorrect expansion of defgeneric that caused a style
3453 warning. (thanks for Zach Beane)
3454 * bug fix: slot accessor effective method computation works properly
3455 for classes with multiple non-standard applicable methods on
3456 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3457 * on x86 compiler supports stack allocation of results of LIST and
3458 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3459 CMUCL implementation by Gerd Moellmann)
3460 * fixed some bugs revealed by Paul Dietz' test suite:
3461 ** FORMAT strings with both the ~<~:;~> form of the justification
3462 directive and pretty-printing directives cause an error.
3464 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3465 * incompatible change: the internal functions
3466 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3467 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3468 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3469 instead of the old functions.
3470 * new feature: on platforms where "dladdr" is available foreign
3471 function names now appear in backtraces. (based on Helmut Eller's
3473 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3474 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3476 * documentation: ASDF manual is now distributed with SBCL.
3477 * bug fix: SBCL can now load its contributed modules with REQUIRE
3478 even if the system-provided entries have been removed from
3479 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3481 * bug fix: backtraces involving undefined functions or assembly
3482 routines are more informative. (thanks to Brian Downing)
3483 * bug fix: mutually referent alien structures now work correctly.
3484 (reported by Rick Taube)
3485 * bug fix: structures defined by WITH-ALIEN can be referred to
3486 within other definitions in the same WITH-ALIEN.
3487 * bug fix: division operators (MOD, TRUNCATE and the like) with
3488 constant zero divisors and integer dividends no longer generate
3490 * bug fix: provide default methods for INPUT-STREAM-P and
3491 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3492 * bug fix: improve the detection and resolution of MOP metacycles
3493 (where effective method computation depends on the generic function
3494 having its effective method computed). (reported by Bruno Haible)
3495 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3496 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3497 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3498 * bug fix: pathnames with relative directory components can be
3499 represented relative to default pathnames.
3500 * optimization: in taking the GCD of bignums, reduce the two bignums
3501 to approximately the same size (using Euclid's algorithm) before
3502 applying the more sophisticated binary GCD. (thanks to Juho
3504 * optimization: COUNT on bitvectors now operates word-at-a-time.
3505 * optimization: ASH with a positive, but not necessarily constant,
3506 (leftwards) shift, when in a modular context, is compiled to a
3508 * fixed some bugs revealed by Paul Dietz' test suite:
3509 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3510 if the corresponding argument is NIL.
3511 ** FORMAT directives accepting a minpad parameter treat negative
3513 ** literal commas as character parameters to FORMAT directives are
3515 ** literal spaces directly after ~<Newline> directives within a
3516 format-logical-block (~:< ~@:>) do not induce :FILL-style
3517 conditional newlines.
3518 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3519 as specified: it no longer includes conditional newlines).
3520 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3522 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3523 :PER-LINE-PREFIX argument does not evaluate to a string.
3525 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3526 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3527 the manual for details; for now, package locks can be disabled by
3528 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3529 if no major problems are found then it is likely that they will be
3530 compiled in unconditionally.
3531 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3532 unsupported operators on all platforms. To load a shared library
3533 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3534 object file, link it into a shared library outside of SBCL and
3535 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3537 * bug workaround: ROOM T and the GC were not working together
3538 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3539 reporting facility aren't preserved. That reporting has been
3540 disabled, so now until and unless someone figures out how to make it
3541 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3542 * minor incompatible change: as threatened around sbcl-0.8.0, the
3543 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3544 The symbols are also exported from SB-PCL for backwards
3545 compatibility, but more so than before SB-PCL should be treated as
3546 an implementation-internal package.
3547 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3549 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3550 It is known as of this release not to work on the Alpha, however.
3551 * fixed bug #167: errors signalled due to illegal syntax in method
3552 bodies are now more legible.
3553 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3554 designators and can hence be used with TYPEP.
3555 * fixed bug #333: CHECK-TYPE now ensures that the type error
3556 signalled, if any, has the right object to be accessed by
3557 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3558 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3559 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3561 * fixed bug #334: programmatic addition of slots using specialized
3562 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3563 and :ALLOCATION :CLASS slots.
3564 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3565 float exponents. (rereported by Peter Seibel)
3566 * fixed a bug: #\Space (and other whitespace characters) are no
3567 longer considered to be macro characters in standard syntax by
3568 GET-MACRO-CHARACTER.
3569 * fixed bug: initialization of condition class metaobjects no longer
3570 causes an instance of the condition to be created. (reported by
3572 * fixed bug: it is now possible to have slots such that
3573 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3574 description is neither :INSTANCE nor :CLASS.
3575 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3576 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3577 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3578 non-standard SLOT-DEFINITION-ALLOCATION values.
3579 * fixed bugs: various race conditions handling exiting threads.
3580 CL-PPCRE's thread torture test now passes.
3581 * fixed arguably-a-bug: GC time proportional to number of threads in
3582 system even when most of them are idle
3583 * optimization: improved performance of BIT and SBIT on bit-vectors.
3584 * .fasl file incompatibility: The fasl file version number has
3585 been incremented because of changes associated with package locks.
3587 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3588 * minor incompatible change: the system no longer provides
3589 optimization hints (conditions which are TYPEP
3590 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3591 mode; these hints are still emitted when higher SPEED optimization
3593 * new contrib module: a sampling profiler (profiling by statistical
3594 sampling, rather than by instrumenting functions) is available as
3595 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3596 * the behaviour of the standard function ED is now customizeable by
3597 third parties through a hook variable: see ED's documentation
3598 string for information on the protocol.
3599 * the compiler no longer emits efficiency notes for (FUNCALL X)
3600 when the type of X is uncertain under default optimization
3602 * fixed bug 276: mutating a binding of a specialized parameter to a
3603 method to something that is not TYPEP the specializer is now
3605 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3606 exhibit the required behaviour on the x86 platform. (thanks to
3607 Peter van Eynde, Eric Marsden and Bruno Haible)
3608 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3609 even for difficult arguments. (reported by Peter Graves)
3610 * fixed bug 141a: the backquote printer now descends quoted
3612 * fixed another bug in backquote printing: no more destructive
3613 modification of the form's list structure. (reported by Brian
3615 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3616 move between its address being taken and the call to
3617 interrupt_thread, fixing a crashing race condition.
3618 * the SB-POSIX contrib implementation has been adjusted so that it
3619 no longer exhibits ridiculously poor performance when constructing
3620 instances corresponding to C structs.
3622 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3623 * minor incompatible change: the sb-grovel contrib now treats C
3624 structures as alien (in the sense of SB-ALIEN) objects rather than
3625 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3626 has implications for memory management of client code
3627 (sb-grovel-returned objects must now be manually managed) and for
3628 type safety (alien objects now have full types).
3629 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3630 used to control emission of compiler diagnostics, rather than the
3631 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3632 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3633 quality should be considered deprecated.
3634 * install.sh now installs the user manual as well
3635 * (not quite a new documentable feature, but worth considering in
3636 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3637 beginnings of a semantically meaningful condition hierarchy is
3638 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3640 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3641 designator as the defaults argument.
3642 * fixed bug: Displaced arrays whose displaced-to array has become
3643 too small now cause ARRAY-DIMENSION to signal an error, providing
3644 for safer bounds-checking. (reported by Bruno Haible)
3645 * fixed bug: DEFCLASS slot definitions with identical :READER and
3646 :WRITER names now signal a reasonable error. (reported by Thomas
3648 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3650 * fixed bug: Invalid slot specification errors now print correctly.
3651 (thanks to Zach Beane)
3652 * fixed bug 320: Shared to local slot value transfers in class
3653 redefinitions now happen corrently from superclasses as
3654 well. (reported by Bruno Haible)
3655 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3657 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3658 improper lists correctly. (reported by Bruno Haible)
3659 * fixed bug 313: source-transform for <fun-name> was erroneously
3660 applied to a call of a value of a variable with name <fun-name>.
3661 (reported by Antonio Menezes Leitao)
3662 * fixed bug 307: The obsolete instance protocol ensures that
3663 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3664 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3665 remove dead unknown-values globs from the middle of the stack.
3666 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3667 easier to resume long computations after using *BREAK-ON-SIGNALS*
3668 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3669 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3670 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3671 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3672 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3673 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3675 * fixed a (fairly theoretical) bug in string printing: if
3676 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3677 does not have array-element-type equal to the most general string
3679 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3680 function name. (thanks to Nikodemus Siivola)
3681 * fixed bug: compile-time format string checker failed on
3682 non-closed ~{. (reported by Thomas F Burdick)
3683 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3684 don't warn on legal loop code involving more than one aggregate
3685 boolean. (thanks to Nikodemus Siivola)
3686 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3687 in keyword position to MAKE-PACKAGE was not being reported as
3689 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3690 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3692 * fixed bugs 280 and 312: the checking for multiple definitions in a
3693 file is less likely to become confused by uses of inline
3695 * fixed bug: the #S reader macro performs the keyword coercion
3696 specified for slot names. (reported by Kalle Niemitalo)
3697 * fixed bug: lambda lists may contain symbols whose names start with
3698 & but are not lambda-list-keywords; their occurrence triggers a
3700 * fixed bug 321: define-method-combination argument lambda lists do
3701 not cause invalid code to be generated when &optional or &aux
3702 variables have default values. (reported by Bruno Haible)
3703 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3704 have CLOS classes; this appears also to have fixed reported
3705 instability in stack exhaustion detection.
3706 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3707 MUFFLE-WARNING when no associated restart is present is now
3709 * optimization: rearranged the expansion of various defining macros
3710 so that each expands into only one top-level form in a
3711 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3713 * optimization: used a previously little-used slot in symbols to
3714 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3716 * fixed some bugs revealed by Paul Dietz' test suite:
3717 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3719 ** Fixed an optimization bug related to inheritance of initforms
3720 from local to shared slots.
3721 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3722 ** CAST optimizer forgot to flush argument derived type.
3723 ** print/read consistency on floats is now orders of magnitude
3724 more likely. (thanks also to Bruno Haible for a similar report
3726 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3727 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3728 for objects of type REAL. Make it so.
3729 ** SXHASH is specified (infelicitously) to respect similarity,
3730 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3731 it so. (thanks to Markus Ziegler)
3732 ** on the Alpha, the compiler succeeds in compiling functions
3733 returning a known number of arguments greater than 63.
3734 ** fixed handling of invalid NIL arguments in keyword position
3736 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3738 ** provided a readably-printable representation for RANDOM-STATE
3740 ** ensured that pathnames, where they have a namestring, always
3741 print using #P"..." syntax.
3743 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3744 * Support for the forthcoming 2.0 version of the NetBSD kernel
3745 running on x86 hardware has been added. (thanks to Perry
3746 E. Metzger most immediately, and others for their past work)
3747 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3748 current release version; SBCL's OpenBSD support had been broken
3749 since about the time of OpenBSD's switch to ELF binary format.)
3750 * [placeholder for DX summary]
3751 ** user code with &REST lists declared dynamic-extent, under high
3752 speed or space and low safety and debug optimization policy.
3753 * The manual has been converted to Texinfo format and the debugger
3754 chapter from the cmucl manual has been added.
3755 * A facility has been added to extract documentation strings from
3756 sbcl and store them as Texinfo-formatted snippets for inclusion in
3757 the manual (via Texinfo's @include directive)
3758 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3759 the test case to Dave Roberts)
3760 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3761 pointers. (reported by Sean Ross)
3762 * bug fix: PROFILE output is printed nicely even for large numerical
3763 values. (thanks to Zach Beane)
3764 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3765 greater than 32 handle EOF correctly.
3766 * bug fix: on X86 an immediate argument of the IMUL instruction is
3767 correctly printed in disassembly. (thanks to Lutz Euler)
3768 * bug fix: class slots in redefined classes preserve their old
3769 values. (thanks to Bruno Haible and Nikodemus Siivola)
3770 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3771 succeeds. (reported by Marco Baringer)
3772 * fixed some bugs revealed by Paul Dietz' test suite:
3773 ** READ-SEQUENCE now works on ECHO-STREAMs.
3774 ** RATIONALIZE works more according to its specification. (thanks
3777 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3778 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3779 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3780 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3781 should matter to you only if you rebind the printer control
3782 variables and then find you want different bindings in the
3783 debugger than in the ordinary execution of your program.)
3784 * The runtime build system has been tweaked to support building
3785 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3786 assembler and linker. (thanks to Nikodemus Siivola)
3787 * Unbound, undefined, undeclared variables now trigger full
3788 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3789 more often programmer error than deliberate exploitation of undefined
3791 * optimization: the hash algorithm for strings has changed to one
3792 that is less vulnerable to spurious collisions. (thanks to Juho
3794 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3795 needless bounds checking. (thanks to Juho Snellman)
3796 * optimization: implemented multiplication as a modular
3797 (UNSIGNED-BYTE 32) operation on the PPC backend.
3798 * fixed some bugs revealed by Paul Dietz' test suite:
3799 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3801 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3802 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3803 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3805 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3807 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3809 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3810 their output stream on EOF from read.
3811 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3812 have been read to end-of-file.
3813 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3815 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3816 description of determination of which consecutive characters
3818 ** Printing the "Space" character with escaping on now yields "#\\ ",
3819 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3820 ** Reading floating-point numbers with *READ-BASE* set to a number
3821 less than 10 works correctly.
3822 ** Reading floating-point numbers with *READ-BASE* set to a number
3823 more than 10 works correctly.
3824 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3825 the readtable currently in effect.
3827 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3828 * minor incompatible change: parsing of namestrings on a physical
3829 (Unix) host has changed; numbers after the final #\. in a
3830 namestring are no longer interpreted as a version field. This is
3831 intented to be largely invisible to the user, except that the
3832 meaning of the namestring "*.*.*" has changed: it now refers to a
3833 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3834 should usually be replaced by
3835 (make-pathname :name :wild :type :wild :version :wild)
3836 with the added benefit that this is more likely to be portable.
3837 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3838 option to OPEN now signals an error if the file being opened
3839 exists; this may have an impact on existing code.
3840 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3841 signals received, on the PowerPC platforms (both Linux and
3842 Darwin). (thanks to Pierre Mai for pointing out the location of
3844 * several fixes on OS X: The system now builds and runs cleanly on
3845 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3846 (thanks to Brian Mastenbrook)
3847 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3848 second-resolution: integer multiples of 1/3600 between -24 and 24.
3849 (thanks to Vincent Arkesteijn)
3850 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3851 type when called with 1 argument; PEEK-CHAR checked type of
3852 PEEK-TYPE only after having read first character from a
3853 stream. (reported by Peter Graves)
3854 * bug fix: the garbage collector now has much better locality
3855 behaviour, and in particular no longer treats all memory as being
3856 exhausted when many small objects point to each other in a deeply
3858 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3859 recognized as being TYPEP their class.
3860 * bug fix: the PUSHNEW documentation string has been corrected.
3861 (thanks to Vincent Arkesteijn)
3862 * bug fix: defaulting of the value for the last of an atypically
3863 large number of multiple values being bound was not being
3864 performed correctly on the Alpha or PPC platforms
3865 * optimization: implemented multiplication as a modular
3866 (UNSIGNED-BYTE 32) operation on the x86 backend.
3867 * optimization: SEARCH on simple-base-strings can now be open-coded.
3868 (see also contrib/compiler-extras.lisp for inspiration for
3869 teaching the compiler about the Boyer-Moore algorithm).
3870 * value, returned by MAX (and MIN) called with several EQUALP, but
3871 not EQL, arguments now does not depend on compiler settings.
3872 * fixed some bugs revealed by Paul Dietz' test suite:
3873 ** in stack analysis liveness information is propagated from
3874 non-local entry points.
3875 ** pathwise CAST removing failed when the CAST node did not start
3877 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3878 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3880 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3881 host is already defined.
3882 ** RENAME-FILE works on streams instead of signalling an internal
3884 ** PEEK-CHAR uses the current readtable when determining whether
3885 or not a character is whitespace.
3886 ** MERGE-PATHNAMES handles the case when the pathname does not
3887 specify a name while the default-pathname specifies a version.
3888 ** Pathnames now stand a better chance of respecting print/read
3890 ** Attempting to use standardized file system operators with a
3891 pathname with invalid :DIRECTORY components signals a
3893 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3895 ** DIRECTORY on logical pathnames is more correct.
3896 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3897 signal a TYPE-ERROR if their argument is not a stream.
3898 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3899 designator argument does not designate a stream.
3900 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3901 examining the synonym.
3902 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3904 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3905 element-type larger than ([UN]SIGNED-BYTE 32).
3907 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3908 * When built with the :SB-FUTEX feature, threaded builds now take
3909 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3910 for faster/more reliable mutex and condition variable support.
3911 * Incompatible change (but one you probably shouldn't have been using
3912 anyway): the interface and code for arbitrating between multiple
3913 threads in the same user session has been redesigned.
3914 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3915 error when called without an explicit environment argument.
3916 (thanks to Nikodemus Siivola)
3917 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3918 confused about their position. (thanks to Adam Warner and Gerd
3920 * bug fix: Pretty printing backquoted forms with unquotations in the
3921 argument list position of various code constructs such as LAMBDA
3922 now works correctly. (reported by Paul Dietz)
3923 * bug fix: Pretty printing unquotations no longer loses all
3924 stream position information.
3925 * optimization: performance of string output streams is now less
3926 poor for multiple small sequence writes.
3927 * optimization: performance of CSUBTYPEP in the presence of complex
3928 expressions involving CONS and NOT many times has been improved.
3929 (reported by Paul Dietz)
3930 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3932 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3933 streams for the REPL, for the debugger, and so on. (thanks to
3935 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3936 * fixed some bugs revealed by Paul Dietz' test suite:
3937 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3938 is ignored if it is too small, rather than propagating through
3939 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3940 ** extremely complex negations of CONS types were not being
3941 sufficiently canonicalized, leading to inconsistencies in
3943 ** VALUES tranformer lost derived type.
3945 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3946 * fixed a bootstrapping bug: the build process no longer assumes
3947 that the various BOOLE-related constants have the same value in
3948 host and target lisps. (noted by Paul Dietz' test suite on an
3949 SBCL binary built from CLISP)
3950 * The system can now be dynamically linked on the MIPS platform,
3951 which enables dynamic loading of foreign code from Lisp. (thanks
3952 to Ralf Baechle for discussions on the MIPS ABI)
3953 * The system now records debugging information for its own source
3954 files in a filesystem-position-independent manner, relative to
3955 the "SYS" logical host.
3956 * fixed a compiler bug: MV-LET convertion did not check references
3957 to the "max args" entry point. (reported by Brian Downing)
3958 * tweaked disassembly notes to be less confident about proclaiming
3959 some instruction as an LRA. (thanks to Brian Downing)
3960 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3961 now each have their own history, command character, and other
3962 characteristics. (thanks to David Lichteblau)
3963 * fixed some bugs revealed by Paul Dietz' test suite:
3964 ** compiler failure in compiling LOGAND expressions including a
3966 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3967 shift greater than 32.
3968 ** FLUSH-DEST did not mark blocks for type check regeneration.
3969 ** HANDLER-CASE failed to accept declarations in handler clauses
3970 in some circumstances.
3972 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3973 * New code in contrib/sb-introspect (still probably not entirely
3974 stable yet) provides some support for smart Lisp development
3975 environments like SLIME.
3976 * The conditions signalled for errors occurring when loading .fasl
3977 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3978 in a way which should help ASDF recover gracefully.
3979 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3980 stuff has been cleaned up. If you code contrib/ stuff, this might
3981 affect you, and you can look at contrib/README, contrib/STANDARDS,
3982 and/or the 0.8.4.27 diff to check.
3983 * In full calls the compiler now does not generate checks for declared
3984 argument types for all arguments.
3985 * various threading fixes
3986 ** and some experimental patches which didn't make it into
3987 the main tree for this release, but which are shipped in
3988 contrib/experimental-thread.patch as a possible fix for some
3989 failures (deadlock, spinning...) in GC-intensive multithreaded
3991 * fixed PPC build problem (source code incompatibility of different
3992 library versions): added offsetof() hackery which attempts to divine
3993 where glibc maintainers put uc_mcontext today
3994 * fixed bug 282: compiler does not trust type assertions while passing
3995 arguments to a full call.
3996 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3997 &OPTIONAL VALUES type parameter.
3998 * fix bug 214: algorithm for noting rejected templates is now more
3999 similar to that of template seletion. (also reported by rydis on
4001 * fixed bug 141b: printing backquoted information readably and prettily
4002 inserts a space where necessary.
4003 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4004 (CHARACTER 10) are now reported as errors, rather than propagated
4005 as unknown types. (reported by piso on #lisp)
4006 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4007 with values NIL and :ERROR. (thanks to Milan Zamazal)
4008 * fixed bug 191c: CLOS now does proper keyword argument checking as
4009 described in CLHS 7.6.5 and 7.6.5.1.
4010 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4011 longer raise an error; further, using a list as a for-as-arithmetic
4012 counter now raises a meaningful error.
4013 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4014 now understood by sequence creation functions such as MAKE-SEQUENCE
4016 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4017 a STRING-INPUT-STREAM.
4018 * compiler enhancement: SIGNUM is now better able to derive the type
4020 * type declarations inside WITH-SLOTS are checked. (reported by
4022 * fixed some bugs revealed by Paul Dietz' test suite:
4023 ** incorrect optimization of TRUNCATE for a positive first
4024 argument and negative second.
4025 ** compiler failure in let-convertion during flushing dead code.
4026 ** compiler failure while deriving type of TRUNCATE on an
4027 interval, containing 0.
4028 ** ASH of a negative bignum by a negative bignum count now returns
4030 ** intersection of CONS types now canonicalizes properly, fixing
4031 inconsistencies in SUBTYPEP.
4033 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4034 * incompatible change: The --disable-debugger command line
4035 option now clobbers the debugger at a more fundamental
4036 level, by redefining #'INVOKE-DEBUGGER instead of by
4037 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4038 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4039 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4040 enter the debugger REPL and then suffer recursive errors
4041 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4042 while under the new system, BREAK in --disable-debugger mode
4043 terminates the system just as an unhandled error would.
4044 * fixed compiler performance when processing loops with a step >1;
4045 * bug fix: DOCUMENTATION now retrieves generic function
4046 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4047 support has been systematized, and now supports the methods
4048 specified by ANSI, along with a default method and a method for
4049 slot documentation. (reported by Nathan Froyd)
4050 * bug fix: effective methods associated with a generic function are
4051 no longer cached over a change of that generic function's method
4052 combination. (reported by Andreas Fuchs)
4053 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4054 names a non-existent directory. (thanks to Andreas Fuchs)
4055 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4056 the PPC platform, lead to stack corruption; this has been fixed.
4057 (reported by Rainer Joswig)
4058 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4059 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4060 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4061 arithmetic in general, is now much more reliable on the PPC
4063 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4064 platform now returns the right answer.
4065 * optimization: restored some effective method precomputation in
4066 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4067 precomputation is now tunable.
4068 * optimization: compiler-internal data structure use has been
4069 reviewed, and changes have been made that should improve the
4070 performance of the compiler by about 20%.
4071 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4072 simple-base-strings and simple-bit-vectors is improved.
4073 * optimization: the optimization of 32-bit logical and arithmetic
4074 functions introduced in version 0.8.3 on the x86 has been
4075 implemented on the mips, ppc and sparc platforms; an
4076 implementation of the same facility, but for 64-bit arithmetic,
4077 has been added for the alpha.
4078 * microoptimization: the compiler is better able to make use of the
4079 x86 LEA instruction for multiplication by constants.
4080 * bug fix: in some situations compiler did not report usage of
4081 generic arithmetic in (SPEED 3) policy.
4082 * bug 145b fix: compiler used wrong type specifier while converting
4083 MEMBER-types to numeric.
4084 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4086 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4087 index argument now works properly on the Alpha platform.
4088 * bug fix: floating point exception treatment on the Alpha platform
4090 * bug fix: FILE-POSITION works much better on string input and
4091 output streams. (thanks to Nikodemus Siivola)
4092 * bug fix: many threading/garbage collection symptoms sorted.
4093 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4094 might be pseudo-atomic.
4095 * internal change: Stopping for GC is now done with signals not
4096 ptrace. GC is now done in whichever thread wanted it, instead of
4098 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4100 * bug fix: result form in DO is not contained in the implicit
4102 * incompatible change: ICR structure is changed; the value part of
4103 CONTINUATION is now called LVAR; corresponding functions are
4104 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4105 * added type deriver for ISQRT (thanks to Robert E. Brown).
4106 * bug fix: better support for loading from the command line when an
4107 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4109 * fixed some bugs revealed by Paul Dietz' test suite:
4110 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4111 ** ROUND and FROUND now give the right answer when given very
4112 small float arguments.
4113 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4115 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4116 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4117 ** LCM should return a non-negative integer.
4118 ** PARSE-INTEGER returned the index of a terminator instead of the
4119 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4120 ** PARSE-INTEGER returned an incorrect index being applied to a
4122 ** LCM with two arguments of 0 returns 0 rather than signalling
4124 ** unsigned addition of a 32-bit constant with the high bit set no
4125 longer causes an internal compiler error on the x86.
4126 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4127 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4128 with negative last argument.
4129 ** byte specifiers with zero size and position no longer cause
4130 an error during type derivation.
4131 ** bignum multiplication on the Alpha platform now returns the
4133 * porting: The system now builds on SuSE AMD64, although it still
4134 generates a 32-bit binary.
4135 * .fasl file incompatibility: The fasl file version number has
4136 been incremented (because of the changes to internal compiler
4137 data structures referred to above).
4139 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4140 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4141 more accurately, on the Darwin kernel running on PowerPC hardware.
4142 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4143 * Compiler code deletion notes now signal a condition of type
4144 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4145 an associated MUFFLE-WARNING restart.
4146 * The compiler now performs limited argument count validation of
4147 constant format strings in FORMAT, and where appropriate in ERROR,
4148 CERROR and WARN. (thanks to Gerd Moellmann)
4149 * New ASDF-INSTALL contrib can be used for automatic download and
4150 installation of third-party Lisp code from CCLAN or other sites
4152 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4153 which forces another thread to execute a function supplied by the
4155 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4156 now accept and act upon their :ELEMENT-TYPE keyword argument.
4157 (reported by Martin Atzmueller, Edi Weitz)
4158 * bug fix: FILE-POSITION now accepts position designators up to
4159 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4160 is the greater. (thanks to Patrik Nordebo)
4161 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4162 Kalle Olavi Niemitalo)
4163 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4164 printable. (reported by Eric Marsden)
4165 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4166 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4167 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4168 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4169 (thanks to Stig Sandoe)
4170 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4171 UNREAD-CHAR now correctly includes the unread character in the
4172 target sequence. (thanks to Gerd Moellmann)
4173 * bug fix in threaded builds: the system can now be suspended and
4174 resumed by shell job control with minimal disruption.
4175 * bug fixes in times and timezones >2038AD
4176 * better handling of "where is GNU make?" problem in build scripts
4177 (thanks to Nikodemus Siivola)
4178 * new optimization: inside a named function any reference to a
4179 function with the same name is considered to be a self-reference;
4180 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4181 optimization quality.
4182 * new optimization on x86: logical functions and + now have
4183 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4184 used when the result is truncated to 32 bits.
4185 * VALUES declaration is partially enabled.
4186 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4187 * fixed some bugs revealed by Paul Dietz' test suite:
4188 ** The system now obeys the constraint imposed by
4189 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4190 types form a lattice under type intersection.
4191 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4192 ** ASSOC now ignores NIL elements in an alist.
4193 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4194 and (1+ MOST-POSITIVE-FIXNUM) answers.
4195 ** The addition of a method with invalid qualifiers to a generic
4196 function does not cause an error to be signalled immediately;
4197 a warning is signalled, and the error is generated only on
4198 calling the generic function.
4199 * changed .fasl file version number, in part to add type codes for
4200 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4201 obscure ANSI requirements
4203 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4204 * fixed bug 148: failure to inline-expand a local function left
4205 garbage, confusing the compiler.
4206 * fixed bugs 3cd: structure slot readers perform type check if the
4207 slot can have an invalid value (i.e. it is either not initialized
4208 or can be written with a less specific slot writer).
4209 * bug fix: the compiler now traps array references to elements off
4210 the end of an array; previously, the bounds checking in some
4211 circumstances could go off-by-one.
4212 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4214 * type declarations for array element types now obey the description
4215 on the CLHS page "Declaration TYPE", as per discussions on
4216 sbcl-help around 2003-05-08. This means that a declaration
4217 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4218 declaration, all references to BAR will be asserted or assumed
4219 (with THE, so dependent on compiler policy) to involve objects of
4220 type FOO. Note that no such declaration is implied in
4221 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4222 * declared types of functions from the "Conditions"
4223 chapter. (reported by Paul Dietz)
4224 * bug fix: CERROR accepts a function as its first argument.
4225 * bug fix: NTH an NTHCDR accept a bignum as index
4226 arguments. (reported by Adam Warner)
4227 * optimization: character compare routines now optimize comparing
4228 against a constant character. (reported by Gilbert Baumann)
4229 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4230 argument now works properly on the MIPS platform.
4231 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4232 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4233 declared to have a functional type, does not cause an error
4235 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4236 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4237 * fixed bug: if last continuation of a deleted block has a
4238 destination, this destination should be deleted too. (reported by
4240 * fixed a bug in the bootstrap process: the host compiler's values
4241 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4242 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4243 test case from Patrik Nordebo)
4244 * improved the ability of the disassembler on the PPC platform to
4245 provide helpful disassembly notes.
4246 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4247 the class in more cases than previously.
4248 * bug fix: FILE-POSITION now understands :START and :END for
4249 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4250 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4251 8) data. (thanks to David Lichteblau)
4252 * bug fix: it is possible to add a method to a generic function
4253 without lambda list.
4254 * bug fix: reader failed to signal END-OF-FILE inside an
4255 object representation. (reported by Nikodemus Siivola)
4256 * fixed some bugs revealed by Paul Dietz' test suite:
4257 ** LAST and [N]BUTLAST should accept a bignum.
4258 ** condition slot accessors are methods.
4259 ** (VECTOR NIL) is a subtype of STRING.
4261 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4262 * minor incompatible change: some nonsensical specialized lambda
4263 lists (used in DEFMETHOD) which were previously ignored now signal
4265 * minor incompatible change: the system is now aware of the types of
4266 variables in the COMMON-LISP package, and will signal errors for
4267 most violations of these type constraints (where previously they
4268 were silently accepted).
4269 * minor incompatible change: COMPILE-FILE now uses the freedom
4270 afforded (ANSI 3.2.2.3) to use derived function types for
4271 functions defined in the same file. This also permits the system
4272 to warn on static type mismatches and function
4273 redefinition. (Currently it does not work with high DEBUG level.)
4274 * minor incompatible change: VALUES declaration is disabled.
4275 * When issuing notes, the compiler now signals a condition of type
4276 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4277 restart for use in user handlers. It is expected that the
4278 COMPILER-NOTE condition will eventually become a condition
4279 supertype to a hierarchy of note types, which will then be
4280 handleable in a similar fashion. However, at the moment, no such
4281 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4282 but it's an implementation detail, not a classification for the
4284 * Changes in type checking closed the following bugs:
4285 ** type checking of unused values (192b, 194d, 203);
4286 ** template selection based on unsafe type assertions (192c, 236);
4287 ** type checking in branches (194bc).
4288 * A short form of VALUES type specifier has ANSI meaning (it has
4289 increased the number of situations when SBCL cannot perform type
4291 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4292 keywords or constants is permissible.
4293 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4294 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4295 classes. (thanks to Antonio Martinez)
4296 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4297 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4298 argument to a pretty-print stream. Instead, it leaves any such
4299 operations to DESCRIBE-OBJECT methods.
4300 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4302 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4303 lambda lists. (thanks to David Lichteblau)
4304 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4305 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4306 (thanks to Gerd Moellmann)
4307 * fixed bug 246: increased compilation speed of long
4308 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4310 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4312 * DEFCONSTANT now throws a condition of type
4313 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4314 constant to a non-EQL value; CONTINUE and ABORT restarts
4315 respectively change and preserve the value.
4316 * fixed bug 63: The code walker, part of the implementation of CLOS,
4317 is now better at handling symbol macros.
4318 * bug fix: There is no longer an internal implementation type named
4319 CL:LENGTH. (reported by Raymond Toy)
4320 * bug fix: In macro-like defining macros/special operators the
4321 implicit block does not enclose the lambda list.
4322 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4323 enclosed in parentheses) are not suitable as type specifiers, and
4324 their use properly signals an error now.
4325 * bug fix: An argument count mismatch for a type specifier in code
4326 being compiled no longer causes an unhandled error at compile
4327 time, but signals a compile-time warning.
4328 * fixed simple vector readable printing
4329 * bug fix: DESCRIBE takes more care over whether the class
4330 precedence list slot of a class is bound before accessing it.
4331 (reported by Markus Krummenacker)
4332 * bug fix: FORMATTER can successfully compile pretty-printer format
4333 strings which use variants of the ~* directive inside.
4334 * bug fix: SEARCH now applies its TEST predicate to the elements of
4335 the arguments in the correct order. (thanks to Wolfhard Buss)
4336 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4337 in type inference. (thanks to Robert E. Brown)
4338 * bug fix: Reading in symbols with an explicit package name of ""
4339 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4340 * fixed some bugs revealed by Paul Dietz' test suite:
4341 ** NIL is now allowed as a structure slot name.
4342 ** Arbitrary numbers, not just REALs, are allowed in certain
4343 circumstances in LOOP for-as-arithmetic clauses.
4344 ** Multiple class redefinitions before slot access no longer
4345 causes a type error.
4346 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4347 association between the name and a class.
4348 ** Generic functions with non-standard method-combination and over
4349 five methods all of which return constants no longer return NIL
4350 after the first few invocations. (thanks to Gerd Moellmann)
4351 ** CALL-NEXT-METHOD with no arguments now passes the original
4352 values of the arguments, even in the presence of assignment.
4353 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4355 ** DISASSEMBLE works with closures and funcallable instances.
4356 ** ADD-METHOD now returns the generic function, not the new method.
4357 ** FIND-METHOD signals an error if the lengths of the specializers
4358 is incompatible with the generic function, even if the ERRORP
4360 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4361 which its argument is a member.
4362 ** DEFCLASS only redefines the class named by its class-name
4363 argument if that name is the proper name of the class;
4364 otherwise, it creates a new class.
4365 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4366 of the UNBOUND-SLOT condition to the name of the slot.
4367 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4368 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4369 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4370 SLOT-MAKUNBOUND in the specified fashion.
4372 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4373 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4374 cross-compilation host. As a consequence, we can now bootstrap our
4375 way up to SBCL starting with a bare gcc toolchain and human-readable
4376 source code (first the source to CLISP, then the source to SBCL).
4377 * A contributed module containing a partial implementation of the
4378 simple-streams interface has been included. (thanks to Rudi
4380 * A contributed module implementing the RFC1321 Message Digest
4381 Algorithm, known as MD5, has been included.
4382 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4383 no longer has any effect, as the code controlled by this feature
4384 has been deleted. (As far as we know, no-one has ever built using
4385 this feature, and its semantics were confused in any case).
4386 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4387 work on conditions (as required by the ANSI specification),
4388 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4389 expected behaviour on conditions. Users should note, however,
4390 that such behaviour is not required by the ANSI specification,
4391 and so use of this behaviour may render their code unportable.
4392 * fixed some bugs revealed by Paul Dietz' test suite:
4393 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4395 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4396 ** SXHASH on condition objects no longer returns NIL.
4397 ** :ALLOCATION :CLASS slots are better treated; their values are
4398 updated on class redefinition, and initforms inherited from
4399 superclasses are applied.
4400 ** REMOVE-METHOD returns its generic function argument even when
4401 no method was removed.
4402 ** SHARED-INITIALIZE now initializes the values of the requested
4403 slots, including those with :ALLOCATION :CLASS.
4404 ** ALLOCATE-INSTANCE now works on structure classes defined via
4405 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4407 ** SLOT-EXISTS-P now works on conditions, as well as structures
4409 ** MAKE-LOAD-FORM now has the required methods on
4410 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4411 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4412 keyword, and now implements the SLOT-NAMES argument.
4413 ** methods with &OPTIONAL arguments no longer allow too many
4414 arguments to be passed in the call without error.
4415 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4416 option is consistent with the required arguments of the generic
4417 function lambda list.
4418 * bug fix: REQUIRE accepts a string designator. (Thanks to
4420 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4421 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4422 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4423 * bug fix: The compiler now checks for duplicated variables in macro
4425 * bug fix: SETQ on globals returns the correct value.
4426 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4427 not a COMPILER-ERROR (followed by some other strange error on
4428 choosing the CONTINUE restart).
4429 * bug fix: make.sh and friends are now more consistent in the way that
4430 they look for GNU "make".
4432 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4433 * experimental native threads support (on x86 Linux >=2.4 only).
4434 This is not compiled in by default: you need to add :SB-THREAD to
4435 the target features. See the "Beyond ANSI" chapter of the manual
4437 * fix for longstanding nonANSIism: The old distinction between
4438 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4439 The return value from CL:FIND-CLASS is now a CLOS class, and
4440 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4441 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4442 * An interface to the MetaObject Protocol, as described in Kiczales,
4443 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4444 MIT Press, 1991, is available from the SB-MOP package.
4445 * incompatible change: the SB-PCL package should now be considered
4446 a private implementation detail, and no longer a semi-private MOP
4448 * minor incompatible change: due to rearrangement for threads, the
4449 control stack and binding stack are now allocated at arbitrary
4450 addresses instead of being hardcoded per-port. Users affected by
4451 this probably have to be doing advanced things with shared
4452 libraries, and will know who they are.
4453 * minor incompatible change: Previously, all --eval forms used were
4454 processed with READ before any of them were processed with EVAL.
4455 Now each --eval form is processed with both READ and EVAL before
4456 the next --eval form is processed. (Thus package operations like
4457 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4458 work as the user might reasonably expect.)
4459 * minor incompatible change: *STANDARD-INPUT* is now only an
4460 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4462 * minor incompatible change: Y-OR-N-P is now character-oriented,
4463 not line oriented. Also, YES-OR-NO-P now works without errors.
4464 (thanks to Antonio Martinez)
4465 * sb-aclrepl module improvements: an integrated inspector, added
4466 repl features, and a bug fix to :trace command.
4467 * Known functions, which cannot be open coded by the backend, are
4468 considered to be able to check types of their arguments. (fixing
4469 a bug report by Nathan J. Froyd)
4470 * fixed a bug in computing method discriminating functions: It is
4471 now possible to define methods specialized on classes which have
4472 forward-referenced superclasses. (thanks to Gerd Moellmann)
4473 * fixed evaluation order in optional entries (reported by Gilbert
4475 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4476 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4477 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4478 required-by-AMOP NAME argument, as well as CLASS and
4479 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4480 * fixed bug 20: DEFMETHOD can define methods using names that are
4481 not the proper names of classes to designate class specializers.
4482 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4483 Unix file descriptors, instead of blowing up. (thanks to Antonio
4485 * Garbage collection refactoring: user-visible change is that a
4486 call to the GC function during WITHOUT-GCING will not do garbage
4487 collection until the end of the WITHOUT-GCING. If you were doing
4488 this you were probably losing anyway.
4489 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4490 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4491 TYPEP the latter but not the former.
4492 * The compiler issues a full WARNING for calls to undefined functions
4493 with names from the CL package.
4494 * MAP-INTO for a vector destination is open coded. (reported by
4495 Brian Downing on c.l.l)
4496 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4497 documentation string.
4498 * fixed some bugs revealed by Paul Dietz' test suite:
4499 ** COPY-ALIST now signals an error if its argument is a dotted
4501 ** Condition slots are now accessed more correctly in the presence
4502 of multiple initargs for a given slot.
4503 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4504 exclude restarts of the same name associated with a different
4506 ** DEFCLASS of forward-referenced classes with another
4507 forward-referenced class in the superclasses list no longer
4509 ** Condition slots are now initialized once each, not multiple
4510 times. (thanks to Gerd Moellmann)
4511 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4513 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4514 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4515 arguments contain duplicated elements.
4516 ** RESTART-CASE understands local macros.
4517 ** RESTART-CASE associates exactly its own restarts with a condition.
4518 ** ENDP in safe mode checks its argument to be of type LIST.
4519 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4520 in question is unbound.
4521 ** Optimized MAKE-INSTANCE functions no longer cause internal
4522 assertion failures in the presence of duplicate initargs.
4523 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4524 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4525 propagated even in the ctor optimized implementation of
4527 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4529 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4530 * a better implementation of SXHASH on (simple) bit vectors,
4531 measured both in execution speed and in distribution of results
4532 over the positive fixnums, has been installed. Likewise, a better
4533 implementation of EQUAL for simple bit vectors is now available.
4534 * fixed CEILING optimization for a divisor of form 2^k.
4535 * fixed bug 240 (emitting extra style warnings "using the lexical
4536 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4537 by Antonio Martinez)
4538 * fixed SXHASH, giving different results for NIL depending on type
4539 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4540 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4541 variable. (found by Rolf Wester)
4542 * SBCL does not ignore type declarations for special
4543 variables. (reported by rif on c.l.l 2003-03-05)
4544 * some bug fixes in contrib/sb-aclrepl/
4545 * fixed some bugs revealed by Paul Dietz' test suite:
4546 ** a bug in the CONS type specifier, whereby the CAR and CDR
4547 types got intertwined, has been fixed;
4548 ** the type system is now able to reason about the interaction
4549 between INTEGER and RATIO types more completely;
4550 ** APPEND, [N]REVERSE and NRECONC check that those their
4551 arguments, which must be proper lists, are really so;
4552 ** An array specialized to be unable to hold elements has been
4553 implemented, as required -- yes, really -- by ANSI;
4554 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4555 on malformed property lists;
4557 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4558 * incompatible packaging change: in line with Unix convention,
4559 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4560 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4561 * REQUIRE and PROVIDE are now optionally capable of doing something
4562 useful. See the documentation string for REQUIRE.
4563 * infrastructure for a managed SBCL contrib system: contributed
4564 modules in this release include:
4565 ** the ASDF system definition facility;
4566 ** an interface to the BSD Sockets API;
4567 ** an ACL-like convenience interface to the repl;
4568 (thanks to Kevin Rosenberg)
4569 ** an implementation of ROTATE-BYTE, with efficient implementation
4571 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4572 gives a closer approximation to the right answer than previously.
4573 (thanks to Raymond Toy)
4574 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4575 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4576 optional environment arguments, as required by ANSI.
4577 * fixed bugs in other functions taking environment objects, allowing
4578 calls with an explicit NIL environment argument to be compiled
4580 * fixed bug 228: primary return values from
4581 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4582 COMPILE or FUNCTION.
4583 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4584 :TYPE will no longer signal errors on innocuous objects.
4585 * fixed bug 231b: SETQ is better at respecting type declarations in
4586 the lexical environment.
4587 * fixed a bug in DEFCLASS: classes named by symbols with no or
4588 unprintable packages can now be defined.
4589 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4590 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4591 * fixed compiler failure related to checking types of functions.
4592 (reported by Robert E. Brown)
4593 * the compiler is now much more consistent in its error-checking
4594 treatment of bounding index arguments to sequence functions: in
4595 (SAFETY 3) code, errors will be signalled in almost all cases if
4596 invalid sequence bounding indices are passed to functions defined
4597 by ANSI to operate on sequences.
4598 * fixed a bug in the build procedure: documentation of SBCL-specific
4599 packages is now preserved and available in the final Lisp image.
4600 * lifted FDEFINITION lookup out of loops in the implementation of
4601 many list operations. (thanks to Robert E. Brown)
4602 * fixed a bug in the reader: the #n# reader macro now works for
4603 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4604 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4605 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4606 E. Brown and Tony Martinez respectively)
4607 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4608 SLOT-BOUNDP: in particular, it is now able to optimize them much
4609 better, and is now not vulnerable to having packages renamed.
4610 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4611 always called when a slot is not present in an instance. (thanks
4613 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4614 longer signal an error on unreading a character following EOF on
4615 the previous constituent stream. (thanks to Tony Martinez)
4616 * fixed some bugs revealed by Paul Dietz' test suite:
4617 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4618 not just nonnegative fixnums;
4619 ** the logical bit-array operators such as BIT-AND now accept an
4620 explicit NIL for their "opt-arg" argument (to indicate a
4621 freshly-consed result bit-array);
4622 ** ELT now signals an error on an invalid sequence index in safe
4624 ** the type system is now cleverer about negations of numeric
4625 types, and consequently understands the BIGNUM and RATIO types
4627 ** the type system is now cleverer about the interaction between
4628 INTEGER and RATIO types: while bugs still remain, many more
4629 cases are accurately computed;
4630 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4631 if it is in the last clause;
4632 ** CONSTANTLY now correctly returns a side-effect-free function in
4634 ** DECLARE is no longer treated as a special-operator; in
4635 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4636 * incremented fasl file version number due to the change in the
4637 DEFSTRUCT-SLOT-DESCRIPTION structure.
4639 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4640 * minor incompatible change: code processed by the "interpreter" or
4641 EVAL now has a compilation optimization policy of (DEBUG 2)
4642 (changed from (DEBUG 1)) to improve debuggability of interactive
4643 development, and to allow the use of the debug RETURN command in
4645 * an experimental implementation of the RETURN command for the
4646 debugger has been included. (thanks to Frederik Kuivinen)
4647 * fixed bug 62: constraints were not propagated into a loop.
4648 * fixed bug in embedded calls of SORT (reported and investigated by
4650 * fixed some bugs revealed by Paul Dietz' test suite:
4651 ** printing and reading of arrays with some dimensions having
4652 length 0 (thanks to Gerd Moellmann);
4653 ** BOA constructor with &AUX argument without a default value does
4654 not cause a type error;
4655 ** CONSTANTP now returns true for all self-evaluating objects.
4657 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4658 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4659 accessors that are related by inheritance, as specified in the
4660 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4661 Valtteri Vuorikoski)
4662 * The compiler is now able to inline functions that were defined in
4663 a complex lexical environment (e.g. inside a MACROLET).
4664 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4666 * Support for the upcoming FreeBSD-5.0 release has been included.
4667 (thanks to Dag-Erling Smorgrav)
4668 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4669 effect when it is not in a toplevel context.
4670 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4671 stand a better chance of being correct. (thanks to Gerd
4673 * fixed bug in COERCE, which now signals an error on coercing a
4674 rational to a bounded real type which excludes the expected
4676 * The compiler is now able to derive types more accurately from the
4677 COERCE and COMPILE functions.
4678 * fixed bug 223: functional binding is considered to be constant
4679 only for symbols in the CL package.
4680 * fixed bug 231: SETQ did not check the type of a variable being set
4681 (reported by Robert E. Brown)
4682 * A new optimization for MAKE-INSTANCE has been included, fixing
4683 various bugs (including relating to :ALLOCATION :CLASS slots and
4684 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4686 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4687 ** As required by ANSI, LOOP now disallows anonymous collection
4688 clauses such as COLLECT I in conjunction with aggregate boolean
4689 clauses such as THEREIS (= I 1);
4690 ** LOOP now signals an error when any variable is reused in the
4691 same loop (including the potentially useful construct analogous
4692 to WITH A = 1 WITH A = (1+ A);
4693 ** IT is only a special loop symbol within the first clause of a
4694 conditional loop clause;
4695 ** LOOP with a typed iteration variable over a hashtable now
4696 signals a type error iff it should.
4697 * fixed some other bugs revealed by Paul Dietz' test suite:
4698 ** FILE-STREAM now names the class previously known as FD-STREAM;
4699 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4700 argument) no longer signals an error;
4701 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4702 of the slot symbol, rather than using the current package
4703 ((:CONC-NAME "") continues to intern the slot's name in the
4705 * incremented fasl file version number, because of the incompatible
4706 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4707 of the new implementation of DEFINE-COMPILER-MACRO.
4709 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4710 * Support for building SBCL for MIPS platforms running in
4711 little-endian mode has now been checked in, and basic
4712 functionality on said platforms verified.
4713 * minor incompatible change: PCL now records the pathname of a file
4714 in which methods and the like are defined, rather than its
4716 * minor incompatible change: TRUENAME now considers the truename of
4717 a file naming a directory to be the pathname with :DIRECTORY
4718 component indicating that directory.
4719 * minor incompatible change: a NAMED clause in the extended form of
4720 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4721 reason for the previous behaviour is unclear.
4722 * more systematization and improvement of CLOS and MOP conformance
4723 in PCL (thanks to Gerd Moellman and Pierre Mai):
4724 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4726 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4727 primary methods with no specializers;
4728 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4730 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4731 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4732 FORWARD-REFERENCED-CLASSes; error reporting on
4733 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4735 ** SXHASH on CLOS instances now uses a slot internal to the
4736 instance to return different numbers on distinct instances,
4737 while preserving the same return value through invocations of
4739 ** DEFMETHOD signals errors when methods with longer incongruent
4740 lambda lists are added to generic functions;
4741 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4742 CLASS, as specified in AMOP;
4743 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4744 on the order returned by the primary method for classes of
4745 class STANDARD-CLASS;
4746 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4747 * fixed some bugs shown by Paul Dietz' test suite:
4748 ** DOLIST puts its body in TAGBODY;
4749 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4751 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4752 value producing form;
4753 ** if more variables are given to PROGV than values, extra
4754 variables are bound and made to have no value;
4755 ** NSUBSTITUTE on list arguments gets the right answer with
4757 ** ELT signals an error of type TYPE-ERROR when the index argument
4758 is not a valid sequence index;
4759 ** LOOP signals (at macroexpansion time) an error of type
4760 PROGRAM-ERROR when duplicate variable names are found;
4761 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4762 ** FUNCALL of special-operators now cause an error of type
4764 ** PSETQ now works as required in the presence of side-effecting
4765 symbol-macro places;
4766 ** NCONC accepts any object as its last argument;
4767 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4769 ** loop-for-as-package does not require a package to be explicitely
4771 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4773 * fixed bug 166: compiler preserves "there is a way to go"
4774 invariant when deleting code.
4775 * fixed bug 172: macro lambda lists with required arguments after
4776 &REST arguments now cause an error to be signalled. (thanks to
4778 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4779 bug. (thanks to Matthew Danish)
4780 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4782 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4783 arguments are lexically rebound. (thanks to Gerd Moellmann and
4785 * fixed bug 194: error messages are now more informative when there
4786 is no primary method applicable in a call to a generic
4787 function. (thanks to Gerd Moellmann)
4788 * fixed bug in command line argument checking (thanks to Julian
4790 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4791 (thanks to Matthew Danish)
4792 * incremented fasl file version number, because of the
4793 SXHASH-related changes in the layout of CLOS data structures
4795 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4796 * minor incompatible change: The runtime (the Unix executable named
4797 "sbcl") is now much pickier about the .core files it will load.
4798 Essentially it now requires .core files to descend from the same
4799 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4800 as the runtime does. (The intent is to prevent the crashes which
4801 can occur, and which can even be reported as mysterious failures,
4802 when people patch the sources or change the build parameters
4803 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4804 sbcl and .core files.)
4805 * fixed bug: VALUES-LIST is no longer optimized away.
4806 * fixed bug 142: The FFI conversion of C string values to Lisp
4807 string values no longer conses excessively. (thanks to Nathan
4808 Froyd porting Raymond Toy's fix to CMU CL)
4809 * began to systematize and improve MOP conformance in PCL (thanks to
4810 Nathan Froyd, Gerd Moellman and Pierre Mai):
4811 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4813 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4814 ** FINALIZE-INHERITANCE is now called on class finalization;
4815 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4816 argument precedence order.
4817 * fixed bug 202: The compiler no longer fails on functions whose
4818 derived types contradict their declared type.
4819 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4820 so it can be non-toplevel.
4821 * The fasl file version number has changed (because of the new
4822 implementation of DEFMACRO).
4823 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4824 safe code, that any length requirement by their type-specifier
4825 argument is valid. The exceptions to this are described in bug
4827 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4828 functions now check the types of their inputs as required by ANSI.
4829 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4830 introduced symbol is DECLAREd to be SPECIAL.
4831 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4832 * fixed bug: :COUNT argument to sequence functions may be negative
4833 * fixed bug: body of DO-SYMBOLS may contain declarations
4834 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4835 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4836 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4837 symbol macro only once
4838 * fixed printing of call frame when argument list is unavailable
4839 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4840 * compiler no longer signals WARNING on unknown keyword
4843 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4844 * A beta-quality port to the mips architecture running Linux,
4845 based on the old CMUCL backend, has been made. It has been tested
4846 on a big-endian kernel, and works sufficiently well to be able to
4847 rebuild itself; it has not been tested in little-endian mode.
4848 * fixed an inconsistency between gencgc.c and purify.c which made
4849 dumping/loading .core files unreliable
4850 * fixed bug 120a: The compiler now deals correctly with IFs where
4851 the consequent is the same as the alternative, instead of
4852 misderiving the return type. (thanks to Alexey Dejneka)
4853 * fixed bug 113: Logical pathnames are now dumpable (the logical
4854 host is resolved at load-time, throwing an error if it is not
4856 * fixed bug 174: FORMAT's error message is slightly clearer when a
4857 non-printing character is used in a format directive.
4858 * fixed several bugs in compiler checking of type declarations, i.e.
4859 violations of the Python "declarations are assertions" principle
4860 (thanks to Alexey Dejneka)
4861 * fixed several bugs in PCL's error checking (thanks to Gerd
4863 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4865 * fixed bug in compilation of functions as first class values
4866 (thanks to Antonio Martinez-Shotton)
4867 * The compiler's handling TYPE-ERRORs which it can prove will
4868 inevitably happen at runtime has been cleaned up and corrected
4869 in several ways. (thanks to Alexey Dejneka)
4870 * improved argument type checking for various basic arithmetic
4871 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4872 lavished on them in the past that they can be compiled in many
4873 ways in different special cases
4874 * fixed bug 181: compiler checks validity of user supplied type
4876 * cleaned up code flushing in optimization: Function calls which
4877 should signal errors for safety purposes (e.g. which ANSI says
4878 should signal errors when their arguments are of incorrect type)
4879 are no longer optimized away.
4880 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4881 * incremented fasl file version number, because changes in the
4882 implementation of sequence functions like COERCE caused
4883 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4884 in old inline expansions) to become undefined. (Actually these
4885 changes were later undone, so we might very well be binary
4886 compatible with 0.7.7 after all, but leaving the version number
4887 incremented seemed like the simplest and most conservative
4890 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4891 * An alpha-quality port to the parisc architecture running Linux,
4892 based on the old CMUCL backend, has been made. This, even more so
4893 than the other backends, should be considered still a work in
4894 progress; known problems include that the Linux kernel in 64-bit
4895 mode does not propagate the correct sigcontext structure to
4896 userspace, and consequently SBCL on a parisc64 kernel will not
4898 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4899 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4900 suppressed.) Also now that the compiler is looking at declarations
4901 in the environment, it checks optimization declarations as well,
4902 and suppresses inlining when (> DEBUG SPEED).
4903 * More fixes have been made to treatment of floating point exception
4904 treatment and other Unix signals. In particular, floating point
4905 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4906 * The detection and handling of control stack exhaustion (infinite
4907 or very deeply nested recursion) has changed. Stack exhaustion
4908 detection is now done by write-protecting pages at the OS level
4909 and applies at all optimization settings; when found, a
4910 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4911 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4912 be caught using IGNORE-ERRORS.
4913 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4914 correctly when transforming recursive LABELS functions to LETs.
4915 (thanks to Alexey Dejneka)
4916 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4917 that are names of constants or global variables.
4918 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4919 alien routines with docstrings.
4920 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4921 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4923 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4924 (thanks to Eric Marsden)
4925 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4926 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4927 * Bug fix: The SPARC backend can now compile functions involving
4928 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4929 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4930 to a functions expecting a PATHNAME-DESIGNATOR.
4931 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4932 lambda lists. (thanks to Alexey Dejneka)
4933 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4934 functions so that EXPORTing the name of the class doesn't cause
4935 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4936 to Antonio Martinez for reporting this)
4937 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4938 constant-folded without failing an assertion. (thanks to Einar
4939 Floystad Dorum for reporting this)
4940 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4941 types are now dealt with more correctly by the compiler.
4942 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4943 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4944 behaviour analogous to RENAME-FILE. This puts its behaviour more
4945 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4947 * The fasl file version number has changed again. (because of the
4948 bug fix involving the names of PCL MAKE-INSTANCE functions)
4950 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4951 * bug fix: Floating point exceptions are treated much more
4952 consistently on the x86/Linux and PPC/Linux platforms.
4953 * Array initialization with :INITIAL-ELEMENT is now much faster for
4954 cases when the compiler cannot open code the array creation, but
4955 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4956 array accesses have also seen a speed increase.
4957 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4958 specified. (This was at the root of some bad interactions between
4959 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4961 * bug fix: Internal error arguments for undefined functions are now
4962 computed correctly on the PPC/Linux platform.
4963 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4964 Raymond Toy's patch for CMU CL)
4965 * Support for the Solaris 9 operating environment has been included
4966 (thanks to Daniel Merritt)
4967 * A very ugly but hopefully complete draft of the missing FFI chapter
4968 of the manual has been created by reformatting the corresponding
4969 CMU CL manual chapter into (currently very ugly and incoherent)
4970 DocBook and bringing it up to date for SBCL behavior. Thus, the
4971 manual is now essentially complete, at least by my extreme
4972 once-and-only-once standards, whereby it's acceptable to refer to
4973 the doc strings of SB-EXT functions as the primary documentation.
4974 * The fasl file version number has changed again, due to cleanup of
4975 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4976 is no longer a static symbol.)
4978 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4979 * SBCL now builds with OpenMCL (version 0.12) as the
4980 cross-compilation host; also, more progress has been made toward
4981 bootstrapping under CLISP.
4982 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4984 * bug 158 fixed: The compiler can now deal with integer loop
4985 increments different from 1; fixing this turned out also to fix
4987 * bug 169 fixed: no more bogus warnings about using lexical bindings
4988 despite the presence of perfectly good SPECIAL declarations (thanks
4989 to David Lichteblau)
4990 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4991 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4992 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4994 * bug 180 fixed: Method combination specifications no longer ignore
4995 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4996 * bug fix: Structure type predicate functions now check their argument
4997 count as they should.
4998 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4999 correctly. (thanks to Pierre Mai)
5000 * minor incompatible change: The --noprogrammer option is deprecated
5001 in favor of the new --disable-debugger option, which is very similar.
5002 (The major difference is that it takes effect at a slightly different
5003 time at startup, causing handling of errors in --sysinit and
5004 --userinit files will be affected differently.) The
5005 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5006 been added to allow this functionality to be controlled from ordinary
5007 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5008 maintainers, who might want to run non-interactive scripts to
5009 build SBCL cores which will later be used interactively.)
5010 * minor incompatible change: The LOAD function no longer, when given
5011 a wild pathname to load, loads all files matching that pathname.
5012 Instead, an error of type FILE-ERROR is signalled.
5014 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5015 * bug 147 fixed: The compiler preserves its block link/count
5016 invariants more correctly now so that it doesn't crash. (thanks
5018 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5020 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5021 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5022 no-value-for-this-character as NIL (as specified by ANSI).
5023 * HOST-NAMESTRING on physical pathnames now returns a string that is
5024 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5025 (thanks to Christophe Rhodes)
5026 * The Alpha port handles icache flushing more correctly. (thanks to
5028 * More progress has been made toward bootstrapping under CLISP. (thanks
5029 to Christophe Rhodes)
5030 * The fasl file format has changed again, because dynamic loading
5031 on OpenBSD (which has non-ELF object files) motivated some cleanups
5032 in the way that foreign symbols are transformed and passed around.
5033 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5034 is no longer treated as whitespace by the reader, but instead as
5035 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5036 |A
\7fB|, instead of A as it used to.
5038 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5039 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5040 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5041 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5042 this as of 0.7.1.45, but was left out of the previous news section
5043 (thanks to Dan Barlow)
5044 * SBCL now runs on the Solaris operating system on SPARC architectures
5045 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5046 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5047 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5048 * SPARC backend cleanups, allowing builds of cores optimized for V8
5049 and V9 SPARCS, and also emission of code targeted to a particular
5050 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5052 * SBCL is closer to bootstrapping under CLISP, thanks to various
5053 fixes by Christophe Rhodes.
5054 * The fasl file format has changed again, to allow the compiler's
5055 INFO database to support symbol macros.
5056 * The user manual (in doc/) is formatted into HTML more nicely.
5057 (thanks to coreythomas)
5058 * The system is smarter about SUBTYPEP relationships, especially
5059 those involving NOT types (including types such as ATOM which are
5060 represented internally using NOT types). Thus SUBTYPEP is less
5061 likely to return (VALUES NIL NIL) in general, and in particular
5062 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5064 * The fasl file format has changed again, because the internal
5065 representation of types now includes a new slot to support the new
5066 SUBTYPEP-of-NOT-types logic.
5067 * (not a change in the main branch of SBCL, but a related prototype
5068 which can hopefully be merged into the main branch of SBCL in the
5069 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5070 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5071 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5072 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5073 dispatch macro character combinations. (thanks to Alexey Dejneka)
5074 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5075 that superficially look like logical namestrings correctly.
5076 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5078 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5079 default supplied-p) for &optional and &key arguments. (thanks to
5082 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5083 * incompatible change: The compiler is now less aggressive about
5084 tail call optimization, doing it only when (> SPACE DEBUG) or
5085 (> SPEED DEBUG). (This is an incompatible change because there are
5086 programs which relied on the old CMU-CL-style behavior to optimize
5087 away their unbounded recursion which will now die of stack overflow.)
5088 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5089 for non-GENCGC systems has been increased to 20M (since that
5090 seems much closer to the likely performance optimum for modern
5091 systems than the old 4M value was)
5092 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5093 and *DEBUG-PRINT-LEVEL*
5094 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5095 of CMU CL's support for SPARC, and various endianness and other
5096 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5097 * new syntactic sugar for the Unix command line: --load foo.bar is now
5098 an alternate notation for --eval '(load "foo.bar")'.
5100 ** The system now detects stack overflow and handles it gracefully,
5101 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5102 optimization settings. (This is a good thing in general, and
5103 its introduction in this version should be particularly timely
5104 for anyone whose code fails because of suppression of tail
5106 ** The system now hunts for the C variable "environ" in a more
5107 devious way, to avoid segfaults when the C library version differs
5108 between compile time and run time. (thanks to Christophe Rhodes)
5109 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5110 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5111 ** The compiler no longer issues bogus style warnings for undefined
5112 classes in the same source file as the DEFCLASSes which defined
5113 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5115 ** fixes in CONDITION class precedence list for undefined function
5116 errors (thanks to Alexei Dejneka)
5117 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5118 correctly. (thanks to Dan Barlow)
5119 ** portability fixes aiming at bootstrapping under CLISP (thanks
5120 to Dave McDonald and Christophe Rhodes)
5121 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5122 ** fixes in type translation and and type inference (thanks to
5124 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5125 ** various fixes in the new ports (thanks to Dan Barlow)
5126 * several changes related to debugging:
5127 ** suppression of tail recursion, as noted above
5128 ** stack overflow detection, as noted above
5129 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5130 is now the default. (For some time encapsulation has been more
5131 reliable than the breakpoint-based :ENCAPSULATE NIL
5132 implementation, at least on X86 systems; and I just noticed that
5133 encapsulation also seems closer to the spirit of the ANSI
5136 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5138 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5139 up properly again. (There was a packaging bug in 0.7.0 which
5140 left their definitions in SB-SYS::LOAD-FOREIGN and
5141 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5142 vital for most things which interface to C-level interfaces,
5143 like extensions working with sockets or databases or
5144 Perl-compatible regexes or whatever, and the need to fix
5145 this bug is the main reason that 0.7.1 was released so
5147 ** DEFGENERIC is now choosier about the methods it redefines, so that
5148 reLOADing a previously-LOADed file containing DEFGENERICs does
5149 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5150 cycle now works as it should. (thanks to Alexey Dejneka)
5151 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5152 fixed by Christophe Rhodes. (He actually submitted this patch
5153 months ago, and I delayed until after 0.7.0.)
5154 ** Bug 111 (internal compiler confusion about runtime checks on
5155 FUNCTION types) was fixed by Alexey Dejneka.
5156 * Some internal cleanups (getting rid of variables which aren't
5157 needed now that the byte interpreter is gone) caused the fasl
5158 file format number to change again.
5160 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5161 * major incompatible change: The default fasl file extension, i.e. the
5162 default extension for files produced by COMPILE-FILE, has changed
5163 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5165 ** There are many changes in the implementation of the compiler.
5166 SBCL is now essentially a compiler-only implementation of ANSI
5167 Common Lisp. EVAL still "interprets" a few special cases, but
5168 almost all the interesting cases are handled by creating
5169 a LAMBDA expression, calling COMPILE on it, then calling
5170 FUNCALL on the result.
5171 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5172 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5173 Since the code is newer, there might still be some new bugs
5174 (though not as many as before Martin Atzmueller's fixes:-). But
5175 the new code is substantially simpler and clearer, and hopefully
5176 any remaining bugs will be simpler, less fundamental, and more
5177 fixable then the bugs in the old code.
5178 ** The revised compiler is still a little unsteady on its feet.
5180 *** The debugging information it produces (particularly the names
5181 of FUNCTION objects) is sometimes much less useful than what
5182 the old compiler produced.
5183 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5184 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5185 within a MACROLET) has been temporarily weakened.
5186 ** There are new compiler optimizations for various functions:
5187 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5188 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5189 *** the math functions TRUNCATE, FLOOR, and CEILING
5190 *** the function-of-all-trades COERCE
5191 Mostly these should be transparent, but there's one
5192 potentially-annoying problem (bug 117): when the compiler
5193 inline-expands a function and does type analysis on the result,
5194 it can create control paths which have type mismatches, and
5195 when it can't prove that those control paths aren't taken,
5196 it will issue WARNINGs about the type mismatches. This is
5197 a particular problem in practice for the new sequence functions.
5198 It's not clear how this should be fixed, and for now, a
5199 workaround is given in the entry for 117 in the BUGS file.
5200 ** (Because of the interaction between the two previous items --
5201 occasional inlining problems and new inline expansions -- some
5202 of the new sequence function optimizations won't really kick in
5203 completely until debugging information, and then inlining, are
5204 straightened out in some future version.)
5205 * minor incompatible changes:
5206 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5207 DIRECTORY no longer implicitly promotes NIL slots of its
5208 pathname argument to :WILD. In particular, when you ask for the
5209 contents of a directory (which you used to be able to do without
5210 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5211 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5212 ** changes in behavior that ANSI explicitly defines to be
5213 implementation dependent:
5214 *** The new compiler-only implementation still conforms with ANSI,
5215 but acts a little different than before. Besides the obvious
5216 changes in performance tradeoffs (that the cost per form passed
5217 to EVAL has gone up, and the cost per form executed by EVAL
5218 has gone down), the behavior of the system changes a little
5219 because there are no longer any interpreted function objects.
5220 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5221 e.g. doing COMPILE on the output of interactive DEFUN is
5223 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5225 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5226 has changed from (:CL) to NIL.
5227 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5228 e.g. #\Newline and #\Tab, don't have names specified in the
5229 ANSI Common Lisp standard, is now based on their ASCII symbolic
5230 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5231 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5232 are no longer used for output.
5233 ** changes in internal implementation constants:
5234 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5235 4 million. (If your application spends a lot of time GCing and
5236 you have a lot of RAM, you might want to experiment with
5237 increasing it even more.)
5238 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5239 However, almost all old code should still continue to work without
5240 immediate update, as SB-C-CALL is now a (deprecated) nickname
5242 ** Old operator names in the style DEF-FOO are now deprecated in
5243 favor of new corresponding names DEFINE-FOO, for consistency with
5244 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5245 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5246 internal symbols, but a few supported extensions like
5247 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5248 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5249 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5250 etc. as you get deeper into recursive calls to the debugger
5251 command loop, instead of the old "5]", "5]]", "5]]]"
5252 sequence. (I was motivated to do this when squabbles between
5253 ILISP and SBCL left me very deeply nested in the debugger. In the
5254 short term, this change will probably provoke more ILISP/SBCL
5255 squabbles, but hopefully it will be an improvement in the long run.)
5256 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5257 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5258 function, since declaiming return types involving aliens is
5259 (1) annoyingly messy to do by hand and (2) vital to efficient
5260 compilation of code which calls such functions.
5261 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5262 longer reexported by the SB-EXT package. They're solely useful
5263 for alien code, so it seems more logical that you should get
5264 them from the SB-ALIEN package, not in SB-EXT.
5265 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5266 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5267 features. Instead, the code that they used to control is always
5268 built into the system.
5269 * many other bug fixes
5270 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5271 advantage of the new EVAL-WHEN stuff and to clean them up in
5272 general, and they are now more ANSI-compliant in a number of
5273 ways. Martin Atzmueller is responsible for a lot of this.
5274 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5276 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5277 *** correct ERROR type for various file operations
5278 *** some fixes for Lisp streams
5279 *** DEFMETHOD syntax checking
5280 *** changing old weird representation of debug information as
5281 strings (which, among their other deficiencies, don't transform
5282 correctly when you rename packages, and don't change their
5283 print representation when you change things like *PACKAGE*
5284 and *PRINT-LENGTH*) to symbols and lists of symbols
5285 He also made several improvements and fixed several bugs in DESCRIBE.
5286 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5288 *** misbehavior of WRITE-STRING/WRITE-LINE
5289 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5290 and several other LOOP problems as well
5291 *** DIRECTORY when similar filenames are present
5292 *** DEFGENERIC with :METHOD options
5293 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5294 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5295 *** argument ordering in FIND with :TEST option
5296 *** mishandled package designator argument in APROPOS-LIST
5297 *** various problems in the backquote readmacro
5298 *** a bug in APROPOS
5299 *** probably some others that I'm not describing very well here,
5300 since the CVS log documents them by reference to sbcl-devel
5301 messages, and the SourceForge archives aren't working well.:-(
5302 ** Dan Barlow improved the Alpha port (and is making progress on the
5303 PPC port, for those of you who think different).
5304 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5305 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5306 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5307 continues to work on the SPARC port (for those of you in a position
5308 to look down upon our little PC-compatible boxes from a great height).
5309 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5310 and uses that copy, rather than the current dynamic value, when
5311 it's trying to decide whether to truncate output. Thus e.g.
5312 (let ((*print-lines* 50))
5313 (pprint-logical-block (stream nil)
5315 (let ((*print-lines* 8))
5316 (print (aref possiblybigthings i) stream)))))
5317 should now truncate the logical block only at 50 lines, instead of
5318 often truncating it at 8 lines, as it did before.
5319 * The doc/cmucl/ directory, containing old CMU CL documentation
5320 from the time of the fork, is no longer part of the base system.
5321 SourceForge has shut down its anonymous FTP service, and with it
5322 my original plan for distributing the old CMU CL documentation
5323 there. For now, if you need these files you can download an old
5324 SBCL source release and extract them from it.
5325 * The fasl file version number changed again, for dozens of reasons,
5326 some of which are apparent above.
5328 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5329 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5330 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5331 patch, so that DISASSEMBLE output is much nicer.
5332 * The code in the SB-PROFILE package now seems reasonably stable.
5333 I still haven't decided what the final interface should look like
5334 (I'd like PROFILE to interact cleanly with TRACE, since both
5335 facilities use function encapsulation) but if you have a need
5336 for profiling now, you can probably use it successfully with
5337 the current CMU-CL-style interface.
5338 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5339 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5340 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5341 link now returns the dangling link itself, and for similar
5342 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5343 link itself. (In these cases the old code signalled an error and
5344 looped endlessly, respectively.) Thus, DIRECTORY now works even
5345 in the presence of dangling and cyclic symbolic links.
5346 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5347 is now a supported extension again, since the consensus on
5348 sbcl-devel was that it can be useful for ordinary development
5349 work, not just for debugging SBCL itself.
5350 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5351 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5352 that currently-defined functions might be redefined later with
5353 different return types.
5354 * Hash tables can be printed readably, as inspired by CMU CL code
5355 of Eric Marsden and SBCL code of Martin Atzmueller.
5356 * better error handling in CLOS method combination, thanks to
5357 Martin Atzmueller porting Pierre Mai's CMU CL patches
5358 * more overflow fixes for >16Mbyte I/O buffers
5359 * A bug in READ has been fixed, so that now a single Ctrl-D
5360 character suffices to cause end-of-file on character streams.
5361 In particular, now you only need one Ctrl-D at the command
5362 line (not two) to exit SBCL.
5363 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5365 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5366 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5367 does the right thing.
5368 * The implementation of some type tests, especially for CONDITION
5369 types, is now tidier and maybe faster, due to CMU CL code
5370 originally by Douglas Crosher, ported by Martin Atzmueller.
5371 * Some math functions have been fixed, and there are new
5372 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5373 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5374 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5375 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5376 likely to be built into sbcl-0.7.0.)
5377 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5378 CL, ported to SBCL by Martin Atzmueller)
5379 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5380 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5381 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5382 * There's a new slam.sh hack to shorten the edit/compile/debug
5383 cycle for low-level changes to SBCL itself, and a new
5384 :SB-AFTER-XC-CORE target feature to control the generation of
5385 the after-xc.core file needed by slam.sh.
5386 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5387 COMPILE-FILE is no longer supported, so that now every function
5388 gets an entry point, so that block compilation looks a little
5389 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5390 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5391 returns the number of bytes consed since the system started,
5392 rather than the number consed since the first time the function
5393 was called. (The new definition parallels ANSI functions like
5394 CL:GET-INTERNAL-RUN-TIME.)
5395 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5396 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5397 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5398 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5399 * Fasl file version numbers are now independent of the target CPU,
5400 since historically most system changes which required version
5401 number changes have affected all CPUs equally. Similarly,
5402 the byte fasl file version is now equal to the ordinary
5405 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5406 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5407 is no longer recognized. I apologize for this, because it was
5408 listed in SB-EXT as a supported extension, but I found that
5409 its existing behavior was poorly specified, as well as incorrectly
5410 specified, and it looked like too much of a mess to straighten it
5411 out. I have enough on my hands trying to get ANSI stuff to work..
5412 * many patches ported from CMU CL by Martin Atzmueller, with
5413 half a dozen bug fixes in pretty-printing and the debugger, and
5414 half a dozen others elsewhere
5415 * fixed bug 13: Floating point infinities are now supported again.
5416 They might still be a little bit flaky, but thanks to bug reports
5417 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5418 as flaky as they were.
5419 * The --noprogrammer command line option is now supported. (Its
5420 behavior is slightly different in detail from what the old man
5421 page claimed it would do, but it's still appropriate under the
5422 same circumstances that the man page talks about.)
5423 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5424 are now supported, and enabled by default. Thus, the compiler can
5425 handle many floating point and complex operations much less
5426 inefficiently. (Thus e.g. you can implement a complex FFT
5428 * The compiler now detects type mismatches between DECLAIM FTYPE
5429 and DEFUN better, and implements CHECK-TYPE more correctly, and
5430 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5431 thanks to patches from Martin Atzmueller.
5432 * various fixes to make the cross-compiler more portable to
5433 ANSI-conforming-but-different cross-compilation hosts (notably
5434 Lispworks for Windows, following bug reports from Arthur Lemmens)
5435 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5436 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5437 fixed thanks to Pierre Mai's CMU CL patches.
5438 * fixes to keep the system from overflowing internal counters when
5439 it tries to use i/o buffers larger than 16M bytes
5440 * fixed bug 45a: Various internal functions required to support
5441 complex special functions have been merged from CMU CL sources.
5442 (When I was first setting up SBCL, I misunderstood a compile-time
5443 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5444 * improved support for type intersection and union, fixing bug 12
5445 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5446 more obscure bugs as well
5447 * some steps toward byte-compiling non-performance-critical
5448 parts of the system, courtesy of patches from Martin Atzmueller
5449 * Christophe Rhodes has made some debian packages of sbcl at
5450 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5451 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5452 stable, but are nonetheless usable. When he's ready, I'd be happy
5453 to add them to the SourceForge "File Releases" section. (And if
5454 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5455 * new fasl file format version number (because of changes in
5456 internal representation of (OR ..) types to accommodate the new
5457 support for (AND ..) types, among other things)
5459 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5460 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5462 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5464 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5465 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5466 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5467 * DESCRIBE now works on structure objects again.
5468 * Most function call argument type mismatches are now handled as
5469 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5470 know whether the function will be redefined before the call is
5471 executed. (The compiler could flag local calls with full WARNINGs,
5472 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5473 it doesn't keep track of enough information to know whether calls
5474 are local in this sense.)
5475 * Compiler output is now more verbose, with messages truncated
5476 later than before. (There should be some supported way for users
5477 to override the default verbosity, but I haven't decided how to
5478 provide it yet, so this behavior is still controlled by the internal
5479 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5480 src/compiler/ir1util.lisp.)
5481 * Fasl file format version numbers have increased again, because
5482 support for the Gray streams extension changes the layout of the
5483 system's STREAM objects.
5484 * The Gray subclassable streams extension now works, thanks to a
5485 patch from Martin Atzmueller.
5486 * The full LOAD-FOREIGN extension (not just the primitive
5487 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5488 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5489 but like most other programs, it defaults to copying the Unix
5490 environment from the original process instead of starting the
5491 new process in an empty environment.
5492 * Extensions which manipulate the Unix environment now support
5493 an :ENVIRONMENT keyword option which doesn't smash case or
5494 do other bad things. The CMU-CL-style :ENV option is retained
5495 for porting convenience.
5496 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5497 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5499 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5501 * A patch from Martin Atzmueller seems to have solved the SIGINT
5502 problem, and as far as we know, signal-handling now works cleanly.
5503 (If you find any new bugs, please report them!)
5504 * The system no longer defaults Lisp source file names to types
5505 ".l", ".cl", or ".lsp", but only to ".lisp".
5506 * The compiler no longer uses special default file extensions for
5507 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5508 seems to expect a single default extension for all compiled code,
5509 and there's no compelling reason to try to stretch the standard
5510 to allow two different extensions.) Instead, byte-compiled files
5511 default to the same extension as native-compiled files.
5512 * Fasl file format version numbers have increased again, because
5513 a rearrangement of internal implementation packages made some
5514 dumped symbols in old fasl files unreadable in new cores.
5515 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5516 many fewer weird special cases.
5517 * Bug #17 (differing COMPILE-FILE behavior between logical and
5518 physical pathnames) has been fixed, and some related misbehavior too,
5519 thanks to a patch from Martin Atzmueller.
5520 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5521 by Tim Moore, ported to SBCL by Martin Atzmueller.
5522 * Martin Atzmueller fixed several filesystem-related problems,
5523 including bug #36, in part by porting CMU CL patches, which were
5524 written in part by Paul Werkowski.
5525 * More compiler warnings in src/runtime/ are gone, thanks to
5526 more patches from Martin Atzmueller.
5527 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5530 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5532 * DESCRIBE now works on CONDITION objects.
5533 * The debugger now handles errors which arise when trying to print
5534 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5536 * The build system now uses an additional file, customize-target-features.lisp,
5537 to allow local modifications to the target *FEATURES* list. (The point of
5538 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5539 debugging features enabled, without having to worry about propagating it
5540 into everyone's system when I do a "cvs update".) When no
5541 customize-target-features.lisp file exists, the target *FEATURES* list
5542 should be constructed the same way as before.
5543 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5544 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5545 warn about behavior which is undefined under the ANSI spec. Note: This
5546 is specified by ANSI, but it's not very popular with programmers.
5547 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5548 macro in the SBCL sources for an example of a workaround which you
5549 might use to make portable ANSI-standard code which does what you want.
5550 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5551 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5552 when it's used as a non-toplevel form. (This is required in order
5553 to implement the DEFCONSTANT-EQX macro.)
5554 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5555 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5556 funny things, due to bugs in the implementation of EVAL-WHEN
5557 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5558 non-toplevel DEFCONSTANTs are uncommon.)
5559 * The core file version number and fasl file version number have been
5560 incremented, because the old noncompliant DEFCONSTANT behavior involved
5561 calling functions which no longer exist, and because I also took the
5562 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5563 * fixed bug 1 (error handling before read-eval-print loop starts), and
5564 redid debugger restarts and related debugger commands somewhat while
5566 ** The QUIT debugger command is gone, since it did something
5567 rather different than the SB-EXT:QUIT command, and since it never
5568 worked properly outside the main toplevel read/eval/print loop.
5569 Invoking the new TOPLEVEL restart provides the same functionality.
5570 ** The GO debugger command is also gone, since you can just invoke
5571 the CONTINUE restart directly instead.
5572 ** The TOP debugger command is also gone, since it's redundant with the
5573 FRAME 0 command, and since it interfered with abbreviations for the
5575 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5577 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5578 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5579 some porting work by Martin Atzmueller)
5580 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5581 with a boatload of patches which he ported to SBCL. Now that those
5583 ** The system tries to make sure that its low-priority messages
5584 are prefixed by semicolons, to help people who like to use
5585 syntax highlighting in their ILISP buffer. (This patch
5586 was originally due to Raymond Toy.)
5587 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5588 patches originally written by Raymond Toy.
5589 ** The compiler understands coercion between single-value and
5590 multiple-VALUES type expressions better, getting rid of some very
5591 weird behavior, thanks to patches originally by Robert MacLachlan
5592 and Douglas Crosher.
5593 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5594 lambda lists, thanks to a patch originally by Pierre Mai.
5595 ** The system no longer bogusly warns about "abbreviated type
5597 ** The compiler gets less confused by inlining and RETURN-FROM,
5598 thanks to some patches originally by Tim Moore.
5599 ** The system no longer hangs when dumping circular lists to fasl
5600 files, thanks to a patch originally from Douglas Crosher.
5601 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5602 undefined function error.
5603 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5604 in structure slot initforms) for now, documented workaround instead:-|
5605 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5606 * fixed bug 5: added stubs for various Gray stream functions called
5607 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5608 installed, at least appropriate type errors are generated
5609 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5610 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5611 consistently in DEFMETHOD forms.
5612 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5613 it doesn't seem to affect SBCL after all
5614 * The C runtime system now builds with better optimization and many
5615 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5617 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5619 * The system is now under CVS at SourceForge (instead of the
5620 CVS repository on my home machine).
5621 * The new signal handling code has been tweaked to treat register
5622 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5623 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5624 downstream, e.g. in debug-int.lisp, has implicit dependencies
5625 on the unsignedness of integer representation of machine words,
5626 and that caused the system to bomb out with infinite regress
5627 when trying to recover from type errors involving signed values,
5628 e.g. (BUTLAST '(1 2 3) -1).)
5629 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5630 (This was one of the bugs Peter Van Eynde reported back in July.)
5631 * The system now uses code inspired by Colin Walters' O(N)
5632 implementation of MAP (from the cmucl-imp@cons.org mailing
5633 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5634 inline the MAP operation, and there is more than one
5635 sequence argument to the MAP call (so that it can't just
5636 do ETYPECASE once and for all based on the type of the
5637 single sequence argument). (The old non-inline implementation
5638 of the general M-argument sequence-of-length-N case required
5639 O(M*N*N) time when any of the sequence arguments were LISTs.)
5640 * The QUIT :UNIX-CODE keyword argument has been renamed to
5641 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5642 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5644 * Raymond Wiker's patches to port dynamic loading from Linux to
5645 FreeBSD have been added.
5646 * The BUGS file is now more nearly up to date, thanks in large part
5647 to Martin Atzmueller's review of it.
5648 * The debugger now flushes standard output streams before it begins
5649 its output ("debugger invoked" and so forth).
5650 * The core version number and fasl file version number have both
5651 been incremented, because of incompatible changes in the layout
5653 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5654 used to not be called for a saved Lisp image.)
5655 * Martin Atzmueller's version of a patch to fix a compiler crash,
5656 as posted on sbcl-devel 13 September 2000, has been installed.
5657 * Instead of installing Martin Atzmueller's patch for the
5658 compiler transform for SUBSEQ, I deleted the compiler transform,
5659 and transforms for some similar consing operations.
5660 * A bug in signal handling which kept TRACE from working on OpenBSD
5662 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5663 away by constant folding
5664 * The system now defines its address space constants in one place
5665 (in the Lisp sources), and propagates them automatically elsewhere
5666 (through GENESIS and the sbcl.h file). Therefore, patching the
5667 address map is less unnecessarily tedious and error-prone. The
5668 Lisp names of address space constants have also been systematized.
5669 * CVS tags like dollar-Header-dollar have been removed from
5670 the sources, because they have never saved me trouble and
5671 they've been source of trouble working with patches and other
5672 diff-related operations.
5673 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5674 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5676 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5678 * The system has been ported to OpenBSD.
5679 * The system now compiles with a simple "sh make.sh" on the systems
5680 that it's supported on. I.e., now you no longer need to tweak
5681 text in the target-features.lisp-expr and symlinks in src/runtime/
5682 by hand, the make.sh takes care of it for you.
5683 * The system is no longer so grossly inefficient when compiling code
5684 involving vectors implemented as general (not simple) vectors (VECTOR T),
5685 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5686 which dares to use the various sequence functions on non-simple
5687 vectors, takes less of a performance hit.
5688 * There is now a primitive type predicate VECTOR-T-P
5689 to test for the (VECTOR T) type, so that e.g.
5690 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5691 can now be compiled with some semblance of efficiency. (The old code
5692 turned the type declaration into a full call to %TYPEP at runtime!)
5693 * AREF on (VECTOR T) is still not fast, since it's still compiled
5694 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5695 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5696 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5697 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5698 without making full calls to SUBTYPEP at runtime.
5699 (Some analogous efficiency issues for non-simple vectors specialized to
5700 element types other than T, or for non-simple multidimensional arrays,
5701 have not been addressed. They could almost certainly be handled the
5702 same way if anyone is motivated to do so.)
5703 * The changes in array handling break binary compatibility, so
5704 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5705 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5706 instead of (VALUES T T).
5707 * By following the instructions that Dan Barlow posted to sbcl-devel
5708 on 2 July 2000, I was able to enable primitive dynamic object
5709 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5710 functionality is not implemented (since it calls ld to resolve
5711 library references automatically, requiring RUN-PROGRAM for its
5712 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5713 try to resolve library references) is now supported.
5714 * The system now flushes the standard output streams when it terminates,
5715 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5716 them at several other probably-convenient times, e.g. in each pass of
5717 the toplevel read-eval-print loop, and after evaluating a form given
5718 as an "--eval" command-line option. (These changes were motivated by a
5719 discussion of stream flushing issues on cmucl-imp in August 2000.)
5720 * The source transform for TYPEP of array types no longer assumes
5721 that an array whose element type is a not-yet-defined type
5722 is implemented as an array of T, but instead punts, so that the
5723 type will be interpreted at runtime.
5724 * There is now some support for cross-compiling in make.sh: each of
5725 the phases of make.sh has its own script. (This should be transparent
5726 to people doing ordinary, non-cross-compile builds.)
5727 * Since my laptop doesn't have hundreds of megabytes of memory like
5728 my desktop machine, I became more motivated to do some items on
5729 my to-do list in order to reduce the size of the system a little:
5730 ** Arrange for various needed-only-at-cold-init things to be
5731 uninterned after cold init. To support this, those things have
5732 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5733 symbols with such names are now uninterned after cold init).
5734 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5735 fasl files for cold load.
5736 ** Remove the old compiler structure pooling code (which used to
5737 be conditional on the target feature :SB-ALLOC) completely.
5738 ** Redo the representation of some data in cold init to be more compact.
5739 (I also looked into supporting byte compiled code at bootstrap time,
5740 which would probably reduce the size of the system a lot, but that
5741 looked too complicated, so I punted for now.)
5742 * The maximum signal nesting depth in the src/runtime/ support code has
5743 been reduced from 4096 to 256. (I don't know any reason for the very
5744 large old value. If the new smaller value turns out to break something,
5745 I'll probably just bump it back up.)
5746 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5748 * Many, many bugs reported by Peter Van Eynde have been added to
5749 the BUGS list; some have even been fixed.
5750 * While enabling dynamic object file loading, I tried to make the
5751 code easier to understand, renaming various functions and variables
5752 with less ambiguous names, and changing some function calling
5753 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5754 * While trying to figure out how to do the OpenBSD port, I tried to
5755 clean up some of the code in src/runtime/. In particular, I dropped
5756 support for non-POSIX signal handling, added various comments,
5757 tweaked the code to reduce the number of compilation warnings, and
5758 renamed some files to increase consistency.
5759 * To support the new automatic configuration functionality in make.sh,
5760 the source file target-features.lisp-expr has been replaced with the
5761 source file base-target-features.lisp-expr and the machine-generated
5762 file local-target-features.lisp-expr.
5763 * fixed a stupid quoting error in make.sh so that using CMU CL
5764 "lisp -batch" as cross-compilation host works again
5766 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5768 * DESCRIBE no longer tries to call itself recursively to describe
5769 bound/fbound values, so that it no longer fails on symbols which are
5770 bound to themselves (like keywords, T, and NIL).
5771 * DESCRIBE now works on generic functions.
5772 * The printer now prints less-screwed-up representations of closures
5773 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5774 * A private symbol is used instead of the :EMPTY keyword previously
5775 used to mark empty slots in hash tables. Thus
5776 (DEFVAR *HT* (MAKE-HASH-TABLE))
5777 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5778 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5779 now does what ANSI says that it should. (You can still get
5780 similar noncompliant behavior if bang on the hash table
5781 implementation with all the symbols you get back from
5782 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5783 This breaks binary compatibility, since tests for equality to
5784 :EMPTY are wired into things like the macroexpansion of
5785 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5787 * There's now a minimal placeholder implementation for CL:STEP,
5788 as required by ANSI.
5789 * An obscure bug in the interaction of the normal compiler, the byte
5790 compiler, inlining, and structure predicates has been patched
5791 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5792 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5794 * Missing ordinary arguments in a macro call are now detected even
5795 when the macro lambda list contains &KEY or &REST.
5796 * The debugger no longer complains about encountering the top of the
5797 stack when you type "FRAME 0" to explicitly instruct it to go to
5798 the top of the stack. And it now prints the frame you request even
5799 if it's the current frame (instead of saying "You are here.").
5800 * As specified by ANSI, the system now always prints keywords
5801 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5803 * The default initial SIZE of HASH-TABLEs is now smaller.
5804 * Type information from CLOS class dispatch is now propagated
5805 into DEFMETHOD bodies, so that e.g.
5806 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5808 is now basically equivalent to
5809 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5810 (DECLARE (TYPE SINGLE-FLOAT X))
5812 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5813 operation, without having to do run-time type dispatch.
5814 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5815 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5816 * Since I don't seem to be making big file reorganizations very often
5817 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5818 is overflowing my ability to conveniently back them up), I've finally
5819 checked the system into CVS. (The CVS repository is on my home system,
5820 not at SourceForge -- putting it on SourceForge might come later.)
5821 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5822 high-level GC-NOTIFY-FOO functions send their output. (There's
5823 still very little control of where low-level verbose GC functions
5824 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5825 less than it used to -- the GC-NOTIFY-FOO functions are now under
5826 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5827 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5828 in only one place in the source code, and propagates it automatically
5829 everywhere that it's needed. Thus e.g. when I bump the version from
5830 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5831 * The C source files now include boilerplate legalese and documentation
5832 at the head of each file (just as the Lisp source files already did).
5833 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5834 to his page will be replaced with a link to his new CLiki service.
5836 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5838 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5839 * The build process now looks for GNU make under the default name "gmake",
5840 instead of "make" as it used to. If GNU make is not available as "gmake"
5841 on your system, you can change this default behavior by setting the
5842 GNUMAKE environment variable.
5843 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5844 can build without error under CMU CL.
5846 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5848 * There is now a partial SBCL user manual (with some new text and some
5849 text cribbed from the CMU CL manual).
5850 * The beginnings of a profiler have been added (starting with the
5851 CMU CL profiler and simplifying and cleaning up). Eventually the
5852 main interface should be through the TRACE macro, but for now,
5853 it's still accessed through vaguely CMU-CL-style functions and macros
5854 exported from the package SB-PROFILE.
5855 * Some problems left over from porting CMU CL to the new
5856 cross-compilation bootstrap process have been cleaned up:
5857 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5858 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5859 part when getting rid of the compiler *BACKEND* stuff.)
5860 ** The value of *NULL-TYPE* was screwed up, because it was
5861 being initialized before the type system knew the final
5862 definition of the 'NULL type. This screwed up several key
5863 optimizations in the compiler, causing inefficiency in all sorts
5864 of places. (I found it because I wanted to understand why
5865 GET-INTERNAL-RUN-TIME was consing.)
5866 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5867 PROCLAIM FTYPE information. Unfortunately this broke binary
5868 compatibility again, since now the forms output by DEFGENERIC
5869 to refer to functions which didn't exist in 0.6.3.
5870 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5871 can use the new (as of 0.6.3) transform for SOME into MAP into
5873 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5874 values to (INTEGER 0 1000000), so that the time code will no longer
5875 occasionally get blown up by Linux returning 1000000 microseconds
5876 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5877 its output conform to the ANSI spec. (Alas, this makes its output
5878 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5879 * A full call to MAP NIL with a single sequence argument no longer conses.
5880 * fixes to problems pointed out by Martin Atzmueller:
5881 * The manual page no longer talks about multiprocessing as though
5882 it were currently supported.
5883 * The ILISP support patches have been removed from the distribution,
5884 because as of version 5.10.1, ILISP now supports SBCL without us
5885 having to maintain patches.
5886 * added a modified version of Raymond Toy's recent CMU CL patch for
5887 EQUALP comparison of HASH-TABLE
5889 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5891 * The system still can't cross-compile itself with
5892 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5893 entails), but at least it can compile more of itself that way
5894 than it used to be able to, and various buglets which were uncovered
5895 by trying to cross-compile itself that way have now been fixed.
5896 * This release breaks binary compatibility again. This time
5897 at least I've incremented the FASL file format version to 2, so that the
5898 problem can be detected reliably instead of just causing weird errors.
5899 * various new style warnings:
5900 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5901 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5902 ** using the lexical binding of a variable named in the *FOO* style
5903 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5904 as specified by ANSI.
5905 * *RANDOM-STATE* is no longer automatically initialized from
5906 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5907 default behavior of the system is to repeat its behavior every time
5908 it's run. If you'd like to change this behavior, you can always
5909 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5910 old convention there was no comparably easy way to get the system to
5911 repeat its behavior every time it was run.
5912 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5913 FTYPE declarations has been removed, in favor of their ANSI
5914 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5915 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5916 the types of their sequence arguments can be determined at compile time.
5917 This is done through a new open code expansion for MAP which eliminates
5918 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5919 argument types can be determined at compile time.
5920 * The optimizer now transforms COERCE into an identity operation when it
5921 can prove that the coerced object is already of the correct type. (This
5922 can be a win for machine generated code, including the output of other
5923 optimization transforms, such as the MAP transform above.)
5924 * Credit information has been moved from source file headers into CREDITS.
5925 * Source file headers have been made more standard.
5926 * The CASE macro now compiles without complaining even when it has
5929 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5931 * (Note that the way that the PCL macroexpansions were rewritten
5932 to accommodate the change in DEFGENERIC below breaks binary
5933 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5934 not run under sbcl-0.6.2. Once we get out of alpha releases,
5935 i.e. hit release 1.0.0, we'll probably try to maintain binary
5936 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5937 and sbcl-1.4.4. Until then, however, it might be fairly common
5938 for maintenance releases to break binary compatibility.)
5939 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5941 * The reporting of unhandled signals has been changed to print some
5942 explanatory text as well as the report form. (Previously only
5943 the report form was printed.)
5944 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5945 it defines, so that the compiler no longer issues undefined function
5946 warnings for compiled-but-not-yet-loaded generic functions.
5947 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5948 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5949 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5950 section of the ANSI spec are supported.
5951 * The "" nickname for the "KEYWORD" package has been removed.
5952 The reader still handles symbol tokens which begin with a package marker
5953 as keywords, but it doesn't expose its mechanism for doing so in the
5954 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5955 * The system now issues STYLE-WARNINGs for contradictory TYPE
5956 proclamations. (Warnings for contradictory FTYPE proclamations would
5957 be nice too, but those can't be done usefully unless the type system
5958 is made smarter about FUNCTION types.)
5959 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5960 systematized, so that "*target-*.lisp is supposed to exist only on the
5961 target and imply that there's a related file which exists on the
5962 host, and *host-*.lisp is supposed to exist only on the host and imply
5963 that there's a related file which exists on the target. This involves a
5964 lot of renaming. Hopefully the acute confusion caused by the renaming
5965 will be justified by the reduction in chronic confusion..
5966 ** runtime-type.lisp -> early-target-type.lisp
5967 ** target-type.lisp -> late-target-type.lisp
5968 ** early-host-format.lisp -> early-format.lisp
5969 ** late-host-format.lisp -> late-format.lisp
5970 ** host-error.lisp -> misc-error.lisp
5971 ** early-error.lisp -> early-target-error.lisp
5972 ** late-error.lisp -> late-target-error.lisp
5973 ** host-defboot.lisp -> early-defboot.lisp
5974 ** code/misc.lisp -> code/target-misc.lisp
5975 ** code/host-misc.lisp -> code/misc.lisp
5976 ** code/numbers.lisp -> code/target-numbers.lisp
5977 ** code/early-numbers.lisp -> numbers.lisp
5978 ** early-host-type.lisp -> early-type.lisp
5979 ** late-host-type.lisp -> late-type.lisp
5980 ** host-typep.lisp -> typep.lisp
5981 ** load.lisp -> target-load.lisp
5982 ** host-load.lisp -> load.lisp
5983 ** host-disassem.lisp -> disassem.lisp
5984 ** host-insts.lisp -> insts.lisp
5985 ** byte-comp.lisp -> target-byte-comp.lisp
5986 ** host-byte-comp.lisp -> byte-comp.lisp
5987 ** host-signal.lisp -> signal.lisp
5988 ** host-defstruct.lisp -> defstruct.lisp
5989 ** late-target-type.lisp -> deftypes-for-target.lisp
5990 Furthermore, several other previously target-only files foo.lisp (e.g.
5991 hash-table.lisp and random.lisp) have been split into a target-and-host
5992 foo.lisp file and a target-only target-foo.lisp file, with their key type
5993 definitions in the target-and-host part, so that the cross-compiler will
5994 know more about target types.
5995 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5996 gone away. In their place are various *BACKEND-FOO* variables
5997 corresponding to the slots of the old structure.
5998 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5999 into the target SBCL has been fixed.
6000 * The chill.lisp system for loading cold code into a running SBCL
6002 * Support for the CMU CL "scavenger hook" extension has been removed.
6003 (It was undocumented and unused in the CMU CL sources that SBCL was
6004 derived from, and stale in sbcl-0.6.1.)
6005 * Various errors in the cross-compiler type system were detected
6006 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6007 (enabling various consistency checks). Many of them were fixed,
6008 but some hard problems remain, so the compiler is back to
6009 running without *TYPE-SYSTEM-INITIALIZED* for now.
6010 * As part of the cross-compiler type system cleanup, I implemented
6011 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6012 * I have started adding UNCROSS calls throughout the type system
6013 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6014 on cross-compiler input files will be able to go away, and various
6016 * CONSTANTP now returns true for quoted forms (as explicitly required
6019 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6021 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6022 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6023 (MAKE-LIST -1). In the longer term, it ought to become true
6024 that declarations are assertions even at SAFETY 1. For now, it's not
6025 quite true even at SAFETY 3, but it's at least more nearly true..
6026 (Note that this change seems to increases the size of the system by
6027 O(5%) and to decrease the speed of the compiler by 20% or more.)
6028 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6029 for the problem of printing dozens of lines of distracting information
6030 about low-level system machinery as part of the top stack frame
6031 on entry to the debugger when an undefined function was called.
6032 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6033 is not reset to COMMON-LISP-USER.
6034 * Compilation of stuff related to dyncount.lisp has been made conditional
6035 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6036 smaller. The various dyncount-related symbols have been moved into
6037 a new "SB-DYNCOUNT" package.
6038 * tty-inspect.lisp has been renamed to inspect.lisp.
6039 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6040 feature has gone away. (When we eventually port to other flavors of
6041 libc and/or Unix, we'll try to make the differences between flavors
6042 invisible at the user level.)
6043 * Various other *FEATURES* tags, and/or their associated conditionals,
6044 have been removed if obsolescent, or given better documentation, or
6045 sometimes given more-mnemonic names.
6047 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6049 * tidied up "make.sh" script
6050 * tidied up system directory structure
6051 * better "clean.sh" behavior
6052 * added doc/FOR-CMUCL-DEVELOPERS
6053 * many many small tweaks to output format, e.g. removing possibly-confusing
6054 trailing #\. character in DESCRIBE-INSTANCE
6055 * (EQUALP #\A 'A) no longer signals an error.
6056 * new hashing code, including EQUALP hashing
6057 * tidied up Lisp initialization and toplevel
6058 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6059 * command line argument processing
6060 * added POSIX-GETENV function to deal with Unix-ish environment variables
6061 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6062 terminating SBCL on EOF
6063 * non-verbose GC by default
6064 * There is no more "sbcl" shell script; the sbcl file is now the C
6065 runtime executable (just like CMU CL).
6066 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6068 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6069 symbol and package information as Lisp native symbol and package objects
6070 instead of strings naming symbols and strings naming packages. This way,
6071 whenever packages are renamed (as in warm init), debug information is
6072 transformed along with everything else.
6073 * tweaked the optimization policy declarations which control the building
6074 of SBCL itself. Now, among other things, the system no longer saves
6075 source location debugging information. (This helps two problems at once
6076 by reducing SBCL size and by keeping SBCL from trying to look for its
6077 sources -- which may not exist -- when reporting errors.)
6078 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6079 debugging and testing purposes
6080 * cleaned up printing, making the printer call PRINT-OBJECT for
6081 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6082 methods, giving nearly-ANSI behavior
6083 * converted almost all special variables to use *FOO* naming convention
6084 * deleted PARSE-TIME functionality, since it can be done portably
6085 * moved some files out of cold init into warm init
6086 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6088 * regularized formatting of source files
6089 * added an install.sh script
6090 * fixed ridiculous memory usage of cross-compiler by making
6091 compiler/alloc.lisp not try to do pooling unless it can hook
6092 itself into the GC of the cross-compilation host. Now the system
6093 builds nicely on my old laptop.
6094 * added :SB-ALLOC in target-features.lisp-expr
6095 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6096 was not implemented)
6097 * re-did condition handling and note reporting in the compiler. Notes
6098 are no longer handled by signalling conditions. Style warnings
6099 and warnings are handled more correctly and reported in such a way
6100 that it's easy to find one or the other in your output (so that you
6101 can e.g. figure out which of many problems caused COMPILE-FILE to
6103 * changed the severity of several compiler warnings from full WARNING
6104 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6105 compiler note reporting so that it doesn't use the condition system
6106 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6107 COMPILE-FILE command)
6108 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6109 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6110 no longer supported, since their implementation was deeply intertwingled
6111 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6112 * removed bogus "support" for compiler macros named (SETF FOO), and
6113 removed the compiler macro for SETF INFO (but only after making a fool
6114 of myself on the cmucl-imp mailing list by posting a bogus patch for
6115 DEFINE-COMPILER-MACRO..)
6116 * Compiled files containing forms which have side effects on the Lisp
6117 reader (such as DEFPACKAGE forms) are now handled more correctly.
6118 (Compiler queuing of top level lambdas has been suppressed by setting
6119 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6120 * deleted various currently-unused source files, e.g. gengc.lisp. They
6121 may be added back at some point e.g. when porting to other architectures,
6122 but until they are it's distracting to distribute them and to try to
6124 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6125 there were so many of them they're just distractions, and UNCROSS is
6126 known to be able to handle the current sources
6127 * moved PROFILE functionality into TRACE, so that it will be clear
6128 how the wrapping and unwrapping of functions when you profile them
6129 interacts with the wrapping and unwrapping of functions when you
6130 trace them. (Actually, the functionality isn't there yet, but at least
6131 the interface specification is there. Hopefully, the functionality will
6132 arrive with some future maintenance release.)
6133 * removed host-oops.lisp
6134 * changed signature of QUIT function to allow UNIX-CODE argument
6135 * fixed READ-SEQUENCE bug
6136 * tweaked verbose GC output so that it looks more like the progress
6137 output that ANSI specifies for functions like LOAD
6138 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6139 * added <http://sbcl.sourceforge.com> to the banner information printed by