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 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
11 the thunk, as a keyword argument, :arguments.
12 * enhancement: constraint propagation is simplified (and sped up) when
13 COMPILATION-SPEED > SPEED.
14 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
15 * enhancement: debugger understands &MORE arguments better.
16 * optimization: extracting bits of a single-float on x86-64 has been
17 optimized. (lp#555201)
18 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
20 * optimization: local call trampolines (x86 and x86-64) are emitted
22 * optimization: implicit value cells for dynamic-extent closed-over bindings
23 on x86 and x86-64 can hold unboxed values as well.
24 * meta-optimization: improved compilation speed, especially for large
25 functions. (lp#792363 and lp#394206)
26 * bug fix: bound derivation for floating point operations is now more
27 careful about rounding possibly closing open bounds. (lp#793771)
28 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
29 backwards incompatible change in 1.0.48.27)
30 * bug fix: occasional debugger errors in when a type-error occured in a
31 function with dynamic-extent &rest list.
32 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
33 boa-construtors can be used to initialized structure slots.
34 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
35 (lp#795705, regression)
36 * bug fix: DIRECTORY works better on logical pathnames.
37 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
38 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
39 * bug fix: the compiler no longer constant-folds NaNs in
40 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
41 * bug fix: FORMAT now handles floating point rounding correct, eg.
42 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
44 * bug fix: style warning during lambda-list introspection of generic
45 functions with both optional and key argments.
46 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
48 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
51 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
52 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
53 interrupts for its body.
54 * enhancement: source locations are now available for files loaded as
55 source, compile-time-too evaluation, and initialization files.
56 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
57 virtual source-file information, eg. overriding input-file of COMPILE-FILE
58 when a temporary file is used for compilation.
59 * enhancement: ASDF has been updated to version 2.015.3.
60 * enhancement: backtraces involving frames from the default evaluator are
62 * enhancement: RUN-PROGRAM works with user-defined binary input and output
64 * enhancement: more informative compile-time warnings and runtime errors for
65 type-errors detected at compile-time.
66 * enhancement: deadlock detection for mutexes and spinlocks.
67 * enhancement: dynamic-extent for &rest lists stack allocate only their
68 spines, not their argumets. While portable code should not rely on this,
69 particularly in combination with inlining, it should make dynamic-extent
71 * enhancement: SB-POSIX improvements:
72 ** WNOHANG and WUNTRACED are exported.
73 ** SYSCALL-ERROR now also provides the name of the failing system call.
74 * enhancement: --script improvements:
75 ** errors on standard input, output, and error streams are handled and
76 cause scripts to exit silently, making them easier to use in shell
78 ** backtraces from scripts now go to standard error instead of the
79 terminal even if one is available.
80 ** --script can be an argument, causing the script to be loaded from
82 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
83 strings to foreign memory.
84 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
85 a file, making it easier to understand heap dynamics.
86 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
87 allows the compiler to automatically elide rest-list allocation so long as
88 the call sites are in functions that the compiler knows cannot escape.
90 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
91 especially in safe code when none of the required arguments have changed
93 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
94 uninterruptible, as well as blocking reads from socket streams created
95 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
96 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
97 from the to-char if the from-char is not a dispatch-macro character.
98 * bug fix: references to undefined variables in function calls that are
99 optimized away now signal a runtime error. (lp#722734)
100 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
101 types from a function defined in the same file. (regression from
103 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
105 * bug fix: spurious errors during QUIT when standard streams were closed.
107 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
108 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
109 years, is now no longer supported.
110 * enhancement: read() and write() have been added to SB-POSIX.
111 * enhancement: types of DEFSTRUCT constructors are proclaimed more
112 accurately, allowing better typechecking of call-sites.
113 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
114 are no longer caught. (reverted to pre 1.0.34 behaviour)
115 * optimization: slightly faster ISQRT. (lp#713343)
116 * bug fix: better support for Solaris /bin/sh in sh-based tests.
117 * bug fix: TRACE behaves better when attempting to trace undefined
118 functions. (lp#740717)
119 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
120 to (FUNCALL #'(LAMBDA ...) ...).
121 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
122 a compile-time error. (lp#720382)
123 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
125 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
126 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
127 optimization. (regression from 1.0.45.18/1.0.46.15)
128 * bug fix: package locks did not protects against compile-time side-effects
129 of DEFUN. (lp#675584)
130 * bug fix: --dynamic-space-size argument is validated more carefully.
132 * bug fix: memory fault from printing a malformed simple-condition.
134 * bug fix: redefining classes so that slot-definition classes change now
135 engages the obsolete instance protocol. (lp#766271)
136 * bug fix: constant improper lists could break source coverage recording.
138 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
141 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
142 * bug fix: fix mach port rights leaks in mach exception handling code on
143 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
145 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
146 * enhancement: redefinition warnings for macros from different files. (lp#434657)
147 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
148 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
149 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
150 processed using EVAL -- now the appropriate toplevel form is reported instead.
151 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
152 declarations. (lp#726331)
153 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
154 that NIL/NULL is excluded from the type.
155 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
157 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
159 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
160 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
161 stack-allocated values out of their dynamic-extent. (lp#310175)
162 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
163 x86-64 builds caused a type-error.
164 * bug fix: calling COMPILE with something else than a lambda-expression as the
165 second argument reports a more sensible error. (lp#718905)
166 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
167 are detected. (lp#520607)
168 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
170 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
171 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
172 methods. (regression from 1.0.45.18)
173 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
174 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
175 * bug fix: several foreign functions accepting string also accepted NIL and
176 consequently caused a memory fault at 0 now signal a type-error instead.
178 * bug fix: under rare circumstances, constraint propagation could rewrite a
179 variable reference to refer to a variable not in scope, causing an error
180 during physical environment analysis when attempting to close over the
181 variable. (lp#551227)
182 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
184 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
185 * enhancement: largefile support on Solaris.
186 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
187 arguments (lp#710017)
188 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
189 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
191 * optimization: ERROR and CERROR are approximately 5 times faster.
192 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
193 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
194 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
195 up instance creation in those cases.
196 * optimization: arithmetic operations with multiple constant arguments in now
197 have them reduced at compile-time. (lp#676414)
198 * optimization: determining current character position on string-streams for
199 pretty-printing was overly slow.
200 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
201 lifetime analysis to overwrite closed-over variables (lp#681092).
202 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
203 were not handled correctly (lp#713063).
204 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
206 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
207 mistake. (lp#667297).
208 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
209 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
210 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
211 unintern the wrong symbol with the same name. (lp#693796)
212 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
213 making it possible to restore the initial table if it has been messed up.
216 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
217 * enhancement: ~/ and ~user/ are treated specially in pathnames.
218 Refer to documentation for details.
219 * enhancement: ASDF has been updated to version 2.010.
220 * optimization: mutated closed-over variables that are only accessed by
221 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
222 declared to be DYNAMIC-EXTENT) are stored directly in their containing
223 stack frame, rather than allocating a VALUE-CELL (lp#586103).
224 * optimization: UNWIND-PROTECT cleanup functions are now declared
226 * bug fix: backtracing function with &REST arguments now shows the full
227 argument list. (lp#310173)
228 * bug fix: return types for functions with complex lambda-lists are now
229 derived properly (lp#384892)
230 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
231 long string arguments slowed the compiler down to a crawl.
232 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
233 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
234 in the DEFMETHOD body.
235 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
236 messages, being instead replaced with the corresponding function name.
237 * bug fix: don't derive overly complex unions of numeric types for arithmetic
238 operators. (lp#309448)
240 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
241 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
242 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
243 * enhancement: ALLOCATION-INFORMATION also provides the page the object
245 * enhancement: default dynamic-space size can be configured at build-time
246 without touching source, using the --dynamic-space-size argument to make.sh.
247 * enhancement: DESCRIBE recognizes symbols naming optimization policy
248 qualities, and mentions ALWAYS-BOUND declarations.
249 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
251 * enhancement: ASDF has been updated to 2.009.
252 * enhancement: the system detects known type-erros in calls better,
253 signalling a full warning about violated proclaimed FTYPEs and violations
254 of derived FTYPEs within the same file, including self-calls.
255 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
256 * optimization: constant-folding exploits numeric and character types, in
257 addition member types.
258 * optimization: numeric, character and member types that are inhabited by
259 exactly one value are tested with EQL.
260 * optimization: more conditional branches are eliminated during IR1.
261 Branches are simplified before performing if/if-conversion, and simple
262 equivalent branches (that only read the same constant or variable) are
264 * improvements to the Windows port:
265 ** change: canonical unparsing form for pathname namestrings now uses / as
266 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
267 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
268 on Windows. (thanks to Kalyanov Dmitry)
269 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
271 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
272 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
273 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
274 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
276 * bug fix: interrupts arriving during CL:OPEN caused an error.
277 * bug fix: overeager character buffering could cause input to block
278 spuriously when reading from a pipe (lp#643686)
279 * bug fix: more efficient timer expiry should avoid starvation on systems
280 where number of SIGALRMs per second is restricted. (lp#375515)
281 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
282 * bug fix: compile-times no longer scale linearly with the size of
283 quoted lists in source-code. (lp#654289)
284 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
285 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
286 so badly. (lp#654485)
287 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
288 an error for eg. STRUCTURE. (lp#458015)
289 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
290 (lp#613871, thanks to Roman Marynchak)
291 * bug fix: more reliable &REST list type derivation. (lp#655203)
292 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
293 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
294 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
295 also declared NOTINLINE. (lp#655581)
296 * bug fix: the compiler could attempt to emit constant left shifts of
297 greater value than n-word-bits. (lp#309063)
298 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
299 type information for the function being set. (lp#659220)
300 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
301 containing self-calls were recompiled with a new signature, and failed
302 to warn when a self-call using the old signature was left in. (lp#655126)
303 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
304 :DEFAULT when the default external had character size other than 8 bits.
306 * bug fix: derived types of functions in the same file were implicitly
307 trusted, leading to potential heap corruption when those function were
308 defined incompatibly. (lp#657499)
309 * bug fix: existing ASDF source registries are ignored when building
311 * bug fix: short-form DEFSETF checks that the second argument is a symbol
312 (lp#655824, thanks to Roman Marynchak)
313 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
314 package-lock violation was detected. (lp#660752)
315 * bug fix: the system can store different docstrings for a single function
316 under different names. (lp#661631, regression from 1.0.29.24)
317 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
318 properly. (lp#384801)
319 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
320 of specified length could confuse the type derivation in unsafe code.
322 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
323 fork with multiple Lisp threads running is made on every platform,
324 not just Darwin. (lp#451111)
325 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
326 around when core was saved, which could cause undefined behaviour when the
328 * bug fix: Allow UNTRACE of functions that are no longer defined
329 (lp#667657, thanks to Attila Lendvai)
330 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
331 compile-time warning (lp#664373, thanks to Stas Boukarev)
333 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
334 * incompatible change: FD-STREAMS no longer participate in the serve-event
335 event-loop by default. (lp#316072)
336 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
337 affects streams from CL:OPEN.
338 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
339 default, but this is liable to change: applications needing serve-event
340 for socket streams should explicitly request it using :SERVE-EVENTS T
342 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
344 * enhancement: CLOS effective method functions and defclass slot typechecking
345 function now have debug names for use in backtraces and profiles.
346 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
348 * enhancement: symbols are printed using fully qualified names in several
349 error and warning messages which are often associated with package
350 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
351 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
352 thanks to Andrew Golding)
353 * bug fix: reading /proc files on Linux works. (lp#425199)
354 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
356 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
357 breaking code that tried to write the value of a printer control variable.
358 (lp#581564, thanks to Stas Boukarev)
359 * bug fix: WRITE compiler macro did not handle output stream designators
360 correctly. (lp#598374, thanks to Stas Boukarev)
361 * bug fix: better availability of names of foreign functions in backtraces
362 on Linux. (lp#626962, thanks to Stas Boukarev)
363 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
364 lp#627581, thanks to Josh Elsasser and Jim Wise)
365 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
366 thanks to Josh Elsasser)
367 * bug fix: using aliases for builtin classes as defmethod specializers
368 without adding DEFTYPEs for them works. (lp#618387)
369 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
371 * bug fix: legally dynamic-extent lists and vectors used as
372 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
373 * bug fix: inline-expansion creating references to dead lambda-variables
374 (lp#454681, thanks to Alexey Dejneka)
375 * bug fix: better error message for bogus numerical arguments to RANDOM.
376 (lp#598986, thanks to Stas Boukarev)
377 * bug fix: the compiler occasionally inlined references from incompatible
378 environments occurs. (lp#308951)
379 * bug fix: the compiler threw an error when trying to compile a local
380 function (labels or flet) known to take a specialized complex argument.
381 (not in launchpad, reported by sykopomp in #lispgames)
382 * bug fix: package-locks failed to protect against compile-time effects of
383 DEFUN when the symbol previously had a macro definition. (lp#576637)
384 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
385 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
386 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
387 * bug fix: evaluation in debugger REPL works using the global context when
388 in frames that do not have sufficient debug information.
389 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
391 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
393 * bug fix: interrupt taking longer than the requested period caused SLEEP
394 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
396 changes in sbcl-1.0.42 relative to sbcl-1.0.41
398 ** Cross-compilation host is now specified to make.sh using
399 command-line argument --xc-host=<command> instead of a positional
400 argument. (thanks to Daniel Herring)
401 ** Install location can be specified to make.sh using command-line
402 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
403 * optimization: The default implementation of
404 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
405 * enhancement: Explicit memory barrier operations are now available for use
406 by multithreaded code. See documentation for details.
407 * enhancement: Experimental support for threading on Linux/PPC.
408 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
409 * bug fix: EXPT signals an error if first argument is a zero and second
410 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
411 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
412 (lp#576594, thanks to Roman Marynchak)
413 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
414 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
416 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
417 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
418 cached, leading to many fewer expensive calls to
419 COMPUTE-APPLICABLE-METHODS.
420 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
421 CLASS argument, search for and call an appropriate optimized ctor function
423 * bug fix: WRITE always returns the correct value.
425 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
426 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
427 * bug fix: Name conflicts between symbols passed as arguments to a single
428 call to IMPORT no longer add multiple symbols with the same name to the
429 package (detectable via DO-SYMBOLS).
430 * bug fix: support building without the dlshim on darwin x86 and x86-64
432 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
434 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
435 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
437 * bug fix: linkage-table entries on PPC now no longer overflow their
438 space allocation (potentially causing crashes if they are written out
440 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
441 platforms, preventing the GC from seeing stale pointers on the control
442 stack in subsequent GCs (which would, and does, break invariants).
443 * bug fix: 32-bit unicode external formats now work on big-endian systems.
444 * bug fix: Literal characters with code points greater than about 32767
445 now work on PPC UNICODE builds.
446 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
447 high order bits are explicitly cleared out. In some contrived situations,
448 this could lead to wrong results in mixed real/complex float arithmetic.
449 * bug fix: Fix function/macro redefinition warnings when building with
450 clisp. (lp#576787, thanks to Josh Elsasser)
451 * new platform: experimental support for ppc/openbsd (thanks to Josh
453 * bug fix: Floating-point traps now work on ppc/linux.
455 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
456 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
457 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
458 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
459 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
460 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
461 SB-THREAD:GRAB-MUTEX.
462 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
463 contain additional data structures and tools for concurrent programming;
464 at the moment it contains a lock-free queue, and a lock-free mailbox
466 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
467 GET-MUTEX but takes &key rather than &optional parameters. Also added
468 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
470 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
471 SB-THREAD:WAIT-ON-SEMAPHORE.
472 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
474 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
475 conditions to defer the deadline for forever.
476 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
478 * enhancement: errors from NO-APPLICABLE-METHOD and
479 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
480 generic function call.
481 * enhancement: SB-BSD-SOCKET improvements
482 ** sockets and socket streams now have a more informative printed
483 representation based on the corresponding SOCKET-NAME and
485 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
487 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
488 CL:CLOSE when appropriate, and no longer disassociates the stream
489 from the socket if close failed. (lp#543951)
490 * improvements to the instrumenting profiler
491 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
492 ** optimization: counters no longer use locks for the overflow mode.
493 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
494 incurred an off-by-one miscount.
495 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
496 * enhancement: improved DEFMETHOD pretty-printing.
497 * enhancement: perform range reduction when arguments are too large for
498 x87's transcendentals (instead of returning 0). (lp#327192)
499 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
500 some of CL-PPCRE's macros. (lp#570079)
501 * enhancement: our machine code is slightly less hostile to valgrind on
503 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
504 to Robert Swindells and Aleksej Saushev)
505 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
506 * bug fix: a rare case of startup-time page table corruption.
507 * bug fix: a semaphore with multiple waiters and some of them unwinding due
508 to timeouts could be left in an inconsistent state.
509 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
510 * bug fix: misoptimization of multiplication by one in
511 (SB-C::FLOAT-ACCURACY 0) policies.
512 * bug fix: miscounts in SB-PROFILE.
513 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
514 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
515 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
516 up itself" (March 2010) for further details.
517 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
518 against length of the list if the element is found before the specified
519 END is reached. (thanks to Alec Berryman, lp#554385)
520 * bug fix: errors signalled during package graph modification no longer
521 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
522 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
523 :SB-DOC feature. (lp#552564)
524 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
525 * bug fix: more robust runtime executable path detection. (lp#375549)
526 * bug fix: GCD always returns positive values. (lp#413680)
527 * bug fix: Converting division to multiplication by reciprocal handles
529 * bug fix: We were too eager in eliding range reduction tests on x87.
530 The maximal magnitude is 2^63, not 2^64.
531 * bug fix: Transforms for TRUNCATE don't die when the result is completely
533 * bug fix: Maybe restore buildability on Alpha.
534 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
536 * bug fix: RANDOM-STATE can be printed readably again.
537 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
538 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
539 types) could result in type mismatches during compilation.
541 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
542 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
543 stack frame thrown from.
544 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
545 compiler optimization qualities inside dynamic extent of its body.
546 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
547 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
549 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
550 constraint propgation, allowing better compilation eg. when used to
551 access structures with WITH-SLOTS. (lp#520366)
552 * optimization: the compiler is now more aware of the type of the underlying
553 storage vector for multidimensional simple arrays resulting in better code
554 for accessing such arrays.
555 * optimization: passing NIL as the environment argument to TYPEP no longer
556 inhibits optimizing it. (lp#309788)
557 * optimization: more efficient register usage when handling single-float
558 arguments on x86-64. (thanks to Lutz Euler)
559 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
560 pre-allocated temporary vectors. (lp#496249)
561 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
562 in :INITIAL-CONTENTS. (lp#523612)
563 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
564 functions. (lp#524707)
565 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
566 WITH-SLOTS usages during compilation.
567 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
568 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
569 all x86oid platforms with :UD2-BREAKPOINTS target feature.
570 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
571 instruction (tested on x86oid linux with ud2-breakpoints).
572 * bug fix: slam.sh now works on win32.
573 * bug fix: better differences of numeric types. (lp#309124)
574 * bug fix: arrays declared intersection and union types can have their
575 upgraded element type derived. (lp#316078)
576 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
577 threads started during profiling. (lp#472499)
578 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
580 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
581 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
582 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
583 values instead of signaling an error. (lp#309093)
584 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
586 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
587 declarations (lp#497321)
588 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
589 and failed to detect circular lists (lp#452008)
590 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
592 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
593 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
594 due to it, so that handlers can run.
595 * bug fix: reparsing undefined types if they have become defined since
597 * bug fix: missing &REST type in a proclamation for a function with both
598 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
599 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
600 expanded calls (lp#542174)
601 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
602 than just at toplevel form.
604 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
605 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
606 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
607 but work on type specifiers.
608 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
609 to name a type specifier.
610 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
611 specifier is valid where "valid" basically means "would be accepted as
612 second argument of TYPEP".
613 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
614 returns the function's declared, or derived FTYPE.
615 * new feature: SB-POSIX now supports accessing the d_ino member of
616 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
617 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
618 provide for seeding a RANDOM-STATE object with user-provided data or
619 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
620 attempt to initialize the returned state from the operating system's
621 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
622 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
623 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
624 * bug fix: Fix grammar and style issues for the docstrings of
625 printer-related variables and functions. (Thanks to mon_key; launchpad
627 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
629 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
630 in a row even though a handler defered the deadline long into the
632 * bug fix: A deadline handler was run without interrupts enabled for a
633 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
634 in infinitely spinning, non-killable threads.
635 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
636 before reaching the erring stack frame.
637 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
638 real power. (launchpad bug lp#525949)
639 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
640 GENCGC platforms. (launchpad bug lp#529014)
641 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
642 (launchpad bug lp#525916)
643 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
644 (Thanks to Robert Goldman)
646 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
647 * optimization: ROUND with a single single-float or double-float argument
648 is properly inlined when possible.
649 * optimization: Slightly better code is generated for integer<->float
650 conversions and for single-float<->double-float conversions on x86-64.
651 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
652 code for 32-bit and 64-bit rotations on x86-64.
653 * bug fix: The install script changes the ownership of directories as well
654 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
655 launchpad bug lp#508485)
656 * bug fix: TRUNCATE with a single single-float or double-float argument is
657 properly inlined when possible. (launchpad bug lp#489388)
658 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
659 no longer causes a compiler error on x86 and ppc.
660 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
661 always relative to *READTABLE* rather than the passed argument.
663 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
664 * minor incompatible change: threading support is now enabled by default
666 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
668 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
669 are now caught and reported just like errors during macroexpansion.
670 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
671 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
672 * enhancement: ASDF systems can now depends on SB-QUEUE.
673 * fixes and improvements related to Unicode and external formats:
674 ** bug fix: error handling and restart usage in the ucs-2 external format
676 ** there is now an implementation of the ucs-4 external format.
677 ** the utf-16 and utf-32 external formats are supported.
678 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
679 in the environment. setenv() and unsetenv() are also provided. (reported by
680 Fare Rideau; launchpad bug lp#460455)
681 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
682 loading. This ensures sensible errors for .FASL files from other
683 implementations on case-insensitive filesystems. (reported by Willem
684 Broekema; launchpad bug lp#489417)
685 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
686 Willem Broekema; launchpad bug lp#489698).
687 * bug fix: some minor code rearrangements to reenable warning-free building
688 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
689 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
691 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
694 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
695 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
696 * improvement: support O_LARGEFILE access to files larger than 2GB on
697 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
698 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
699 definitions for methods specializing on the passed class itself.
700 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
701 definitions for methods specializing on the passed class itself, or on
703 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
704 about itself during the build (e.g. for M-? in Slime), if this flag is
705 enabled in customize-target-features.lisp. This will increase the core
706 size by about 5-6mb, though, so it's mostly interesting to SBCL
708 * new feature: various GENCGC tuning parameters have been experimentally
709 documented and exported from SB-EXT. See documentation for details.
710 * fixes and improvements related to Unicode and external formats:
711 ** the Unicode character database has been upgraded to the
712 Unicode 5.2 standard, giving names and properties to a number of new
713 characters, and providing a few extra characters with case
715 ** improvement: restarts for providing replacement input/output on coding
716 errors for fd-stream external formats.
717 ** improvement: where :<encoding> is a keyword corresponding to an
718 external format the system supports, it is now possible to specify
719 (:<encoding> :replacement <character>) as an external format which will
720 automatically substitute <character> on encoding or decoding errors for
721 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
723 ** improvement: the file streams underlying the standard streams (such as
724 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
725 which uses the replacement mechanism to handle encoding errors,
726 preventing various infinite error chains and unrecoverable I/O
728 ** minor incompatible change: the utf-8 external format now correctly
729 refuses to encode Lisp characters in the surrogate range (char-codes
730 between #xd800 and #xdfff).
731 ** fix a typo preventing conversion of strings into octet vectors
732 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
734 ** fix a bug in the octet multibyte handling of decoding errors and the
735 USE-VALUE restart. (launchpad bug lp#314939)
736 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
737 restart on fd-stream decoding errors.
738 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
739 error is near the end of file.
740 ** fix a double-error case in unibyte octet conversions, when the first
741 use of USE-VALUE is ignored.
742 ** fix bugs in handling of undefined code points in unibyte encodings.
743 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
744 streams after an UNREAD-CHAR.
745 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
746 object is allocated in a boxed region of dynamic space.
747 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
748 fork with multiple Lisp threads running is made, instead of going
749 ahead with unpredictable consequences. (reported by Leslie Polzer)
750 * bug fix: uses of slot accessors on specialized method parameters within
751 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
752 error while finalizing the class. This fix may cause classes with slot
753 accessors to be finalized later than previously. (reported by Lars Rune
754 Nøstdal; launchpad bug lp#473699)
755 * bug fix: restore buildability on the MIPS platform. (regression from
756 1.0.30.38, reported by Samium Gromoff)
757 * bug fix: inspecting closures is less likely to fail with a type error.
758 * bug fix: no timer starvation when setting the system clock back.
759 (launchpad bug lp#460283)
760 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
761 standard pprint dispatch table as specified by CLHS.
762 * bug fix: give CLISP a hint about a type declaration to enable it to build
763 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
765 * bug fix: correctly dump literal objects in defaulting forms of arglists.
766 (reported by Attila Lendvai; launchpad bug lp#310132)
767 * bug fix: distinguish in type specifiers between arrays that might be
768 complex and arrays that are definitely complex. (launchpad bug lp#309129)
769 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
770 type. (reported by Levente Mészáros; launchpad bug lp#485972)
771 * bug fix: setting the value of a symbol-macro within a method in the
772 presence of type declarations works properly again. (reported by Iban
773 Hatchondo; launchpad bug lp#485019)
775 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
776 * optimization: faster FIND and POSITION on strings of unknown element type
777 in high SPEED policies. (thanks to Karol Swietlicki)
778 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
780 * improvement: better error signalling for bogus parameter specializer names
781 in DEFMETHOD forms (reported by Pluijzer)
782 * bug fix: DELETE-FILE once again works on logical pathnames (regression
784 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
786 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
787 removes previous default initargs (reported by Lars Rune Nøstdal and
789 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
790 lambda-lists. (reported by Peter Seibel)
791 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
792 correctly when starting from an executable core without saved runtime
793 options (reported by Faré Rideau, thanks to Zach Beane)
794 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
795 an optimization note instead. (reported by Martin Cracauer)
796 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
797 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
798 new process group if it doesn't need to share stdin with the sbcl
799 process. (thanks to Leslie Polzer)
800 * bug fix: SATISFIES could be misoptimized to refer to a local function.
801 (reported by Stanislaw Halik)
803 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
804 * improvement: stack allocation is should now be possible in all nested
805 inlining cases: failure to stack allocate when equivalent code is manually
806 open coded is now considered a bug.
807 * improvements related to Unicode:
808 ** the Unicode character database has been upgraded to the
809 Unicode 5.1 standard, giving names and properties to a number of new
810 characters, and providing a few extra characters with case
812 ** the system now recognizes and produces names for Unicode Hangul
814 ** the EBCDIC-US external-format is now supported for octet operations
815 (as well as for stream operations).
816 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
817 be used to output toplevel compile-time effects into a separate .CFASL
819 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
820 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
822 * optimization: TRUNCATE on known single- and double-floats is upto 25%
824 * optimization: division of floating point numbers by constants uses
825 multiplication by reciprocal when an exact reciprocal exists.
826 * optimization: multiplication of single- and double-floats floats by
827 constant two has been optimized.
828 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
829 sufficient type information is available. (thanks to Leslie Polzer)
830 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
831 known structure objects are as efficient as defstruct generated accessors.
832 * optimization: unused vector creation can now be optimized away.
833 * improvement: ASDF systems can now depends on SB-INTROSPECT.
834 * improvement: a STYLE-WARNING is signalled when a generic function
835 clobbers an earlier FTYPE proclamation.
836 * improvement: the compiler is able to track the effective type of
837 generic function across method addition and removal even in the
838 absence of an explicit DEFGENERIC.
839 * improvement: DESCRIBE now reports on symbols naming undefined
840 but assumed or declared function as well.
841 * improvement: recompilation of systems using SB-GROVEL now works
842 (thanks to Leslie Polzer)
843 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
844 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
846 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
847 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
848 well as user defined declaration names.
849 ** VARIABLE-INFORMATION is now aware of alien variables.
850 * improvement: improved address space layout on OpenBSD (thanks to Josh
852 * improvement: pretty-printing of various Lisp forms has been improved
853 (thanks to Tobias Rittweiler)
854 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
855 unused were deleted in safe code. (reported by John Fremlin)
856 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
858 * bug fix: some out-of-line array predicates were missing (reported by
860 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
862 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
863 (thanks to Larry D'Anna)
864 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
865 as well. (reported by Josh Elsasser)
866 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
867 leading to possible attempts to delete the same file twice. See docstring
868 on DELETE-FILE for details. (reported by John Fremlin)
869 * bug fix: DELETE-FILE once again deletes the file named by the pathname
870 designator argument, rather than its truename. (reported by Luis
872 * bug fix: the low-level debugger had 32-bit assumptions and was missing
873 information about some array types. (thanks to Luis Oliveira)
874 * bug fix: moderately complex combinations of inline expansions could
875 be miscompiled if the result was declared to be dynamic extent.
876 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
877 form (+ <variable> <integer>) were miscompiled under certain
879 * bug fix: in some cases no compiler note about failure to stack allocate
880 was emitted, even if the objects were in fact heap allocated.
881 * bug fix: minor violation of "otherwise inaccessible" rule for stack
882 allocation could cause objects users might reasonably expect to
883 be heap allocated to be stack allocated.
884 * bug fix: DESCRIBE signalled an error for generic functions under
885 certain circumstances. (thanks to Leslie Polzer)
886 * bug fix: Fixed spelling of an error message.
888 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
889 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
890 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
891 of SB-THREAD:THREAD-ERROR-THREAD.
892 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
893 * new feature: docstrings for local and anonymous functions are no longer
894 discarded. (thanks to Leslie Polzer)
895 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
896 values in other threads.
897 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
898 about object allocation.
899 * optimization: division of a real float by a complex float is implemented
900 with a specialised code sequence.
901 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
902 keywords is an order of magnitude faster.
903 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
904 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
905 methods, and similarly for non-standard metaclass classes as long as there
906 are no methods additional on MAKE-INSTANCE.
907 * optimization: more efficient type-checks for FIXNUMs when the value
908 is known to be a signed word on x86 and x86-64.
909 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
910 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
912 * optimization: compiler is smarter about delegating argument type checks to
914 * optimization: several character functions are now compiled somewhat more
915 efficiently. (reported by Lynn Quam)
916 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
917 * improvement: less unsafe constant folding in floating point arithmetic,
918 especially for mixed complex/real -float operations.
919 * optimization: constant double and single floats are stored in native
920 unboxed format on x86[-64].
921 * optimization: smarter code for arithmetic operations with constant floats,
922 complex floats, or integers on x86[-64].
923 * optimization: smarter code for conjugate/multiplication of float complexes
924 and abs/negate of floats on x86-64.
925 * optimization: more efficient complex float and real float operations on
927 * improvement: complex float division is slightly more stable.
928 * improvement: DESCRIBE output has been reworked to be easier to read and
929 contains more pertinent information.
930 * improvement: failure to provide requested stack allocation compiler notes
931 provided in all cases (requested stack allocation not happening without a
932 note being issued is now considered a bug.)
933 * bug fix: SB-POSIX exports the documented types and functions
934 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
935 types. (reported by "abhi")
936 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
937 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
938 (thanks to Paul Khuong)
939 * bug fix: looping around HANDLER-CASE could silently consume stack space
940 on each iteration. (reported by "foobar")
941 * bug fix: better error signalling when calls to functions seeking elements
942 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
943 (reported by Tobias Rittweiler)
944 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
945 directory components now works as it used to. (various prolems reported by
946 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
947 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
948 (reported by Elliot Slaughter, thanks to Stas Boukarev)
949 * bug fix: bogus undefined variable warnings from fopcompiled references to
950 global variables. (thanks to Lars Rune Nøstdal)
951 * bug fix: foreign function names should now appear in backtraces on
952 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
953 * bug fix: SETF compiler macro documentation strings are not discarded
955 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
956 (thanks to Alex Plotnick)
957 * bug fix: SLEEP accepts large integer arguments, truncating them to
958 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
959 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
960 * bug fix: compiler notes for expensive slot type checks could be emitted
961 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
963 changes in sbcl-1.0.29 relative to 1.0.28:
964 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
965 https://bugs.launchpad.net/sbcl
966 Bugs can be reported directly there, or by sending email to
967 sbcl-bugs@lists.sourceforge.net
968 (no subscription required.)
969 * minor incompatible change: under weak type checking policy integer
970 types are weakened less aggressively.
971 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
972 allowed to return, which causes SBCL to quit with exit status 0. Previously
973 if the function returned with a small integer return value, that value
974 was accidentally reused as the exit status.
975 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
976 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
977 :HASH-FUNCTION argument. Refer to user manual for details.
978 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
980 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
981 microseconds since the Unix epoch on all platforms.
982 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
983 allows the compiler to safely elide boundedness checks for special
985 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
986 the symbol, prohibits both lexical and dynamic binding. This is mainly an
987 efficiency measure for threaded platforms, but also valueable in
989 * new feature: UNC pathnames are now understood by the system on Windows.
990 * optimization: the compiler uses a specialized version of FILL when the
991 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
993 * optimization: accesses to potentially non-simple arrays where element type
994 is known are 50% faster.
995 * optimization: compiler now generates faster array typechecking code.
996 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
998 * optimization: multidimensional array accesses in the absence of type
999 information regarding array rank are approximately 10% faster due to
1000 open coding of ARRAY-RANK.
1001 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1002 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1004 * optimization: result of call to VECTOR can now be stack allocated.
1005 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1006 as long as the resulting array is one-dimensional and has a known
1007 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1008 length of the list matches the known length of the vector does not
1009 allocate the list as an intermediate step. Ditto for VECTOR and simple
1011 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1012 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1013 known element type, and is known to be simple and one dimensional.
1014 * improvement: SBCL now emits a compiler note where stack allocation was
1015 requested but could not be provided (not in all cases, unfortunately)
1016 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1017 * improvement: pretty-printing loop has been implemented properly. (thanks
1018 to Tobias Rittweiler)
1019 * documentation: CLOS slot typechecing policy has been documented.
1020 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1021 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1022 pointer, leading to memory faults. (thanks to Bart Botta)
1023 * bug fix: better floating point exception handling on x86/OpenBSD.
1024 (thanks to Josh Elsasser)
1025 * bug fix: exit status from QUIT when called under --script was lost
1026 (reported by Hubert Kauker)
1027 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1028 same implementation of FILL to initialize the array, even if a more
1029 efficient one was available (reported by Stas Boukarev, thanks to
1031 * bug fix: potential miscompilation of array stack allocation on x86 and
1032 x86-64. (reported by Time Tossavainen)
1033 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1034 result in their subforms being treated as top level forms. (reported by
1036 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1037 than a machine register could leave garbage in the high bits of the
1038 result register (bug 316325).
1039 * bug fix: disable address space randomization Linux/x86-64 as well,
1040 not just x86-64. (reported by Ken Olum)
1041 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1042 generate incorrect code.
1043 * bug fix: #201; type inference for CONS and ARRAY types could derive
1044 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1045 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1046 could not be assigned to or bound with PROGV. (reported by Lorenz
1048 * bug fix: the value of CL:- in the inspector was the previous expression
1049 evaluated rather than the expression being evaluated.
1050 * bug fix: constants can no longer be locally declared special.
1051 * bug fix: signals delivered to threads started from foreign land (read:
1052 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1053 thread by blocking all signals and resignalling.
1054 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1055 from :INITFORM, if any.
1057 changes in sbcl-1.0.28 relative to 1.0.27:
1058 * a number of bugs in cross-compilation have been fixed, with the ultimate
1059 result that building under (at least) clisp should be much more reliable.
1060 * minor incompatible changes: echo-streams now propagate unread-char to the
1061 underlying input stream, and no longer permit unreading more than one
1063 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1064 frames, allowing for instance more reliable backtraces.
1065 * improvement: the debugger REPL can now reference lexical variables
1066 by name directly for code compiled with (DEBUG 3).
1067 * improvement: errors from malformed declarations now have better source
1068 paths associated with them. (thanks to Tobias Rittweiler)
1069 * optimization: faster local calls on x86/x86-64
1070 * bug fix: some error messages for out-of-bound array indexes confused the
1071 index and the bound. (thanks to Stas Boukarev)
1072 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1074 * bug fix: running regressions tests in shells without OSTYPE set now works.
1075 (reported by Harald Hanche-Olsen)
1076 * bug fix: more robust static space exhaustion signalling from
1077 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1078 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1079 docstring away instead of storing it under names such as (LAMBDA (X)).
1080 (reported by Leslie Polzer)
1081 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1082 (thanks to Ole Arndt for the patch)
1083 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1084 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1085 potentially-invalid effective methods in its cache.
1086 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1087 instances as well (thanks to Paul Khuong)
1088 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1089 SB-POSIX:WAITPID and their C equivalents.
1090 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1092 changes in sbcl-1.0.27 relative to 1.0.26:
1093 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1094 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1095 * improvement: the system either recovers from stack exhaustion or dies
1096 properly as opposed to leaving the user uncertain of whether the handler
1097 trampled on some random memory next to the stack or having to rely on
1098 --lose-on-corruption (which is still a good idea to use in production
1099 because stack exhaustion can happen in signal handlers which will likely
1101 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1102 1.0.25.37, reported by Harald Hanche-Olsen)
1103 * bug fix: work around signal delivery bug in darwin (regression from
1104 1.0.25.44, reported by Sidney Markowitz)
1105 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1107 changes in sbcl-1.0.26 relative to 1.0.25:
1108 * incompatible change: an interruption (be it a function passed to
1109 INTERRUPT-THREAD or a timer function) runs in an environment where
1110 interrupts can be enabled. The interruption can use
1111 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1112 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1113 potentially running out of stack. Keep in mind that in the absence
1114 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1115 acquiring a lock can enable interrupts.
1116 * incompatible change: GC-OFF and GC-ON are removed, as they were
1117 always unsafe. Use WITHOUT-GCING instead.
1118 * new feature: runtime option --disable-ldb
1119 * new feature: runtime option --lose-on-corruption to die at the
1120 slightest hint of possibly non-recoverable errors: running out of
1121 memory, stack, alien stack, binding stack, encountering a memory
1122 fault, etc. In the absence of --lose-on-corruption a warning is
1124 * enhancement: detect binding stack exhaustion
1125 * enhancement: detect alien stack exhaustion on x86/x86-64
1126 * improvement: generally more stable and reliable interrupt handling
1127 * improvement: there is a per thread interruption queue,
1128 interruptions are executed in order of arrival
1129 * improvement: a repeating timer reschedules itself when the it has
1130 finished, but expiration times are spaced equally. If an
1131 expiration time is in the past it will trigger after a short grace
1132 period that may give a chance to other things to run.
1133 * optimization: slightly faster gc on multithreaded builds
1134 * optimization: faster WITHOUT-GCING
1135 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1136 important locks so that the debugger/handler doesn't produce
1137 recursive errors or deadlock.
1138 * bug fix: real-time signals are not used anymore, so no more
1139 hanging when the system wide real-time signal queue gets full.
1140 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1142 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1143 * bug fix: fix random memory faults related to interrupts on alpha
1144 * bug fix: fix random memory faults related to interrupts on sparc
1145 * bug fix: fix deadlocks related to starting threads
1146 * bug fix: fix deadlines on locks on futex platforms
1147 * bug fix: restore errno in signal handlers
1148 * bug fix: fix deadlocks related to hash tables
1149 * bug fix: fix deadlocks in pcl
1151 changes in sbcl-1.0.25 relative to 1.0.24:
1152 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1153 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1154 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1155 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1156 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1157 better name and does not return values so stale on multiprocessor systems.
1158 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1160 * improvement: unithread builds keep track of MUTEX-VALUE.
1161 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1162 stream anymore making it thread safe to have a concurrent reader and
1163 a writer, for instance, in a pipe.
1164 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1165 arguments, making compiler-macros for SETF-functions able to inspect
1166 their constant arguments.
1167 * improvement: COMPILE-FILE reports times with millisecond accuracy
1168 (thanks to Luis Oliveira)
1169 * optimization: CHAR-CODE type derivation has been improved, making
1170 TYPEP elimination on subtypes of CHARACTER work better. (reported
1171 by Tobias Rittweiler, patch by Paul Khuong)
1172 * bug fix: setting alien structure fields of type struct by value now
1173 computes the right offset for the memory copy.
1174 * bug fix: compilation problem involving inlined calls to aliens with
1175 result type VOID. (reported by Ken Olum)
1176 * bug fix: #235a; sequential inline expasion in different policies no
1177 longer reuses the functional from the previous expansion site.
1178 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1179 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1180 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1181 cause an implied type redefinition. Regression from 1.0.21.29.
1182 * bug fix: sign-extension of small signed return values now works with C
1183 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1184 * improvements to the Windows port:
1185 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1186 Westfold, thanks to Rudi Schlatte)
1188 changes in sbcl-1.0.24 relative to 1.0.23:
1189 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1190 vector of a multidimensional SIMPLE-ARRAY.
1191 * new feature: the system now signals a continuable error if standard
1192 readtable modification is attempted. (thanks to Tobias Rittweiler)
1193 * new feature: DIRECTORY has been extended with a non-standard keyword
1194 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1195 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1196 has been robustified and documented better. (thanks to Robert Goldman)
1197 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1198 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1199 * tradeoff: constant FORMAT control strings are now compiled unless
1200 SPACE > SPEED (previously only when SPEED > SPACE.)
1201 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1203 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1205 * bug fix: lexical type declarations are now correctly reported by
1206 SB-CLTL2. (reported by Larry D'Anna)
1207 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1208 using UTF-8 as external format. (thanks to Luis Oliveira)
1209 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1210 are signalled correctly. (thanks to Stas Boukarev)
1211 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1212 designator. (thanks to Tobias Rittweiler)
1213 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1214 designator, and returns T instead of the function. (thanks to
1216 * bug fix: direct superclasses of STANDARD-CLASS and
1217 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1218 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1219 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1220 when no class with the named slot yet exists no longer causes a
1221 compile-time style-warning.
1222 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1223 in safe code. (reported by Didier Verna)
1224 * bug fix: #430; nested structure constructors can stack allocate.
1225 * bug fix: on some 64-bit platforms dynamic space size was truncated
1226 to #xffff0000 bytes. (reported by Benjamin Lambert)
1227 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1228 REPL unusable. (reported by Daniel Herring)
1229 * bug fix: return values of READ-SEQUENCE did not take :START into
1230 account on file streams, regressions since 1.0.12.22. (reported by
1231 Thomas Russ, patch by Paul Khuong)
1232 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1233 method specializer used to confuse permuation vector optimization.
1234 * bug fix: system inserted bogus implicit type declarations for local
1235 special variables in DEFMETHOD bodies.
1236 * bug fix: #354; duplicated frames in backtraces due to
1237 non-tail-call-optimized XEPs to functions with return type NIL
1239 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1240 initializes structure object slots according to DEFSTRUCT initforms,
1241 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1242 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1243 (reported by Bruno Haible and Stephen Wilson)
1244 * bug fix: #395; fill-pointer output streams used now support
1245 element-type BASE-CHAR as well.
1246 * bug fix: compiler error when attempting to derive return value of
1247 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1249 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1251 * bug fix: Mac OS X binaries should now be portable between Leopard
1254 changes in sbcl-1.0.23 relative to 1.0.22:
1255 * enhancement: when disassembling method functions, disassembly
1256 for the associated fast function is also produced.
1257 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1259 * optimization: printing with *PRINT-PRETTY* true is now more
1260 efficient as long as the object being printed doesn't require
1261 special handling by the pretty printer.
1262 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1263 now interact correctly with type declarations.
1264 * partial bug fix: PCL detects infinite recursion during wrapper
1265 validation. (thanks to Attila Lendvai)
1266 * bug fix: #426; nested function calls are inlined properly.
1267 Previously if FOO was an inline function, in calls of the form
1268 (FOO (FOO ...)) the outer call was not inlined.
1269 * bug fix: long long arguments passed in registers to alien
1270 functions on PowerPC Linux and NetBSD are now handled correctly
1271 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1273 changes in sbcl-1.0.22 relative to 1.0.21:
1274 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1275 for the shared object in the current directory, but passes the native
1276 namestring of the designated pathname to the operation system's shared
1277 object loading function as-it.
1278 * minor incompatible change: --disable-debugger toplevel option now takes
1279 effect before processing of initialization files and --eval or --load
1281 * new feature: new commandline argument: --script, which supports
1282 shebang lines. See documentation for details. (based on work by
1284 * new feature: SAVE-LISP-AND-DIE can save current values of
1285 --dynamic-space-size and --control-stack-size in the executable core,
1286 causing it to skip normal runtime option processing. See documentation
1287 for details. (thanks to Zach Beane)
1288 * enhancement: inoccous calls to EVAL or generic functions dispatching
1289 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1290 * enhancement: the system no longer resignals errors from --load and
1291 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1292 associated with the original error to be lost. (thanks to Ariel
1294 * enhancement: :DONT-SAVE keyword argument has been added to
1295 LOAD-SHARED-OBJECT for controlling interaction with
1296 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1297 the effects of an earlier LOAD-SHARED-OBJECT call.
1298 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1299 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1300 provided. (reported by Cedric St-Jean)
1301 * bug fix: circularity handling in the reader did not treat raw
1302 structure slots correctly. (reported by Cedric St-Jean)
1303 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1304 file descriptors when there were none.
1305 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1306 was broken. (reporteed by Willem Broekema)
1307 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1308 pathnames without a directory.
1309 * bug fix: COMPILE-FILE did not warn about undefined variable
1310 references at toplevel, and LOAD of the resulting fasl did
1311 not signal an error.
1312 * bug fix: functions with non-required arguments used to end up with
1313 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1314 * bug fix: redefining a function with non-required arguments didn't
1315 update the system's knowledge about its call signature properly.
1316 * bug fix: fixed #431; incompatible alien record type redefinitions
1317 are detected and handled. (reported by Neil Haven)
1318 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1319 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1321 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1322 after alien stack frames.
1323 * bug fix: strings passed to mk{s,d}temp lacked null termination
1325 changes in sbcl-1.0.21 relative to 1.0.20:
1326 * new feature: the compiler is able to track the effective type of a
1327 generic function across method addition and removal.
1328 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1329 appropriately typed structure slots without locking.
1330 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1331 information like those gathered by TIME using a programming-friendly
1333 * new feature: TIME reports time taken even if the form performs a
1334 non-local transfer of control.
1335 * enhancement: reduced conservativism on GENCGC platforms: on
1336 average 45% less pages pinned (measured from SBCL self build).
1337 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1338 mutate constant symbols or violate declaimed type of the symbol.
1339 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1340 sleeping on the semaphore in heavily contested semaphores.
1341 * bug fix: semaphores and condition variables were not interrupt
1343 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1344 owned by other threads anymore.
1345 * bug fix: FIND on lists called KEY outside the specified
1346 subsequence. (reported by budden)
1347 * bug fix: LOG doesn't use single-float intermediate results when
1348 given mixed integer and double-float arguments, leading to better
1349 precision. (reported by Bob Felts)
1350 * bug fix: LOG with base zero returned values of inconsistent type.
1352 changes in sbcl-1.0.20 relative to 1.0.19:
1353 * minor incompatible change: OPTIMIZE qualities
1354 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1355 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1356 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1357 * documentation: some slot access efficiency guidelines have been
1358 added to the user manual.
1359 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1360 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1361 as ASSOC and MEMEBER.
1362 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1363 to more efficient EQ-comparison versions more often.
1364 * optimization: enhanced derivation of DOLIST iteration variable type
1366 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1368 * optimization: runtime lookup of function definitions can be
1369 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1370 * optimization: compiler is able to derive the return type of
1371 (AREF (THE STRING X) Y) as being CHARACTER.
1372 * optimization: CLRHASH on empty hash-tables no longer does pointless
1373 work. (thanks to Alec Berryman)
1374 * optimization: REPLACE deftransforms don't punt when :START1 or
1376 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1377 no longer emits a code deletion note. (reported by Andrew
1379 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1380 functions with an odd number of &OPTIONAL arguments, a &REST
1381 argument, and one or more &KEY arguments at the call site.
1382 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1383 arguments appeared at call sites as well.
1384 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1385 READ-LINE &co can no longer read from them afterwards. (reported
1387 * bug fix: fixed #427: unused local aliens no longer cause compiler
1388 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1390 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1391 alien-stack leakage. (reported by Andy Hefner)
1392 * bug fix: PROGV signals an error when an attempt to violate declared
1393 type of a variable or bind a constant is made.
1394 * bug fix: SET signals an error when an attempt to violate declared
1395 type of a variable is made.
1396 * bug fix: restart computation during the execution of a restart
1397 test function no longer causes infinite recursion. (reported by
1399 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1400 signals an error. (thanks to Pierre Mai)
1401 * bug fix: EXPORT left symbol unexported in conflict situations.
1402 (thanks to Michael Weber)
1403 * bug fix: correctly handle name conflicts involving CL:NIL.
1404 (thanks to Michael Weber)
1405 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1406 conflicts arising from USEing package with conflicting symbols
1407 correctly. (thanks to Michael Weber)
1409 changes in sbcl-1.0.19 relative to 1.0.18:
1410 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1411 warnings that go otherwise unhandled will be muffled if they are
1412 of the type that's the value of this variable.
1413 * optimization: stack allocation is slightly more efficient on x86
1415 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1416 where a raw slot always is initialized using the initform whose
1417 type is not know sufficiently well a compile-time are now compiled
1418 correctly. (reported by John Morrison)
1419 * bug fix: compiler no longer makes erronous assumptions in the
1420 presence of non-foldable SATISFIES types.
1421 * bug fix: stack analysis missed cleanups of dynamic-extent
1422 arguments in non-let-converted calls to local functions.
1423 * improvements to the Windows port:
1424 ** adjusted address spaces for building on both Win32 and
1425 Win64. (thanks for John Connors)
1426 * fixed some bugs revealed by Paul Dietz' test suite:
1427 ** interval arithmetic during type derivation used inexact integer
1428 to single-float coercions.
1429 ** arithmetic operations involving large integers and single
1430 floats give the same results in compiled and interpreted code.
1431 ** deriving the result type of COERCE no longer signals an error
1432 if the derived type of the second argument is a MEMBER type
1433 containing invalid type specifiers.
1434 ** ADJOIN with constant NIL as second argument works correctly.
1435 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1437 changes in sbcl-1.0.18 relative to 1.0.17:
1438 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1439 profiles only the current thread.
1440 * minor incompatible change: changes to SYMBOL-VALUE of constants
1441 defined with DEFCONSTANT now signal an error.
1442 * enhancement: SB-SPROF now has support for wallclock profiling,
1443 and is also able to profile specific threads. REPORT output
1444 has also additional sorting options.
1445 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1447 * optimization: structure allocation has been improved
1448 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1449 ** out of line constructors are ~10% faster.
1450 ** inline constructors are ~15% faster.
1451 ** inline constructors are capable of dynamic extent allocation
1452 (generally on x86 and x86-64, in some cases on other platforms
1454 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1456 * optimization: file compiler is now able to coalesce non-circular
1457 lists, non-base strings, and bit-vectors. Additionally, constants
1458 are never referenced through SYMBOL-VALUE at runtime.
1459 * optimization: code defining methods on PRINT-OBJECT (and other
1460 generic functions in the COMMON-LISP package) now loads faster.
1461 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1463 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1464 fasl is now deleted. (reported by Attila Lendvai)
1465 * bug fix: READ-LINE always returned NIL for the last line in files.
1466 (reported by Yoshinori Tahara)
1467 * bug fix: more accurate disassembly annotations of foreign function
1468 calls. (thanks to Andy Hefner)
1469 * bug fix: trimming non-simple strings and non-string string
1470 designators when the there is nothing to trim works properly.
1471 (thanks to James Knight)
1472 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1473 (thanks to Travis Cross)
1474 * fixed some bugs revealed by Paul Dietz' test suite:
1475 ** NIL is a valid function name (regression at 1.0.13.38)
1476 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1477 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1478 fill pointers properly (regression at 1.0.12.23)
1479 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1480 displacement indices properly (regression at 1.0.12.23)
1482 changes in sbcl-1.0.17 relative to 1.0.16:
1483 * temporary regression: user code can no longer allocate closure
1484 variable storage on stack, due to bug 419 without explicitly
1485 requesting it. Please consult sbcl-devel for advice if you need to
1486 use this feature in the meanwhile.
1487 * new feature: runtime argument --control-stack-size can be used to
1488 adjust thread default control stack size.
1489 * enhancement: improved TIME output
1490 ** all times are reported using the measured accuracy (milliseconds
1491 for real and GC times, microseconds for everything else.)
1492 ** processor cycle counts on x86 and x86-64.
1493 ** interpreted forms are counted for both evaluator modes.
1494 ** number of lambdas converted by the compiler is reported.
1495 ** CPU percentage report (computed from real and total run time.)
1496 ** more comprehensive run time reporting, using a condenced format
1497 ** interperted form, lambda, and page fault counts are omitted
1499 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1501 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1502 * optimization: two argument forms of LAST are upto ~10% faster
1503 in normal SPEED policies.
1504 * optimization: NCONC no longer needs to heap cons its &REST list
1505 in normal SPEED policies.
1506 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1507 to Sidney Markowitz)
1508 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1509 regression since 1.0.9.1. (thanks to Eric Marsden)
1510 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1511 since 1.0.15.36. (thanks to Paul Khuong)
1512 * bug fix: LAST when always returned the whole list when given a bignum
1513 as the second argument.
1514 * bug fix: dynamic extent allocation of nested lists and vectors
1515 could leak to otherwise accessible parts.
1516 * bug fix: invalid optimization of heap-allocated alien variable
1518 * bug fix: fasl header checking is less vulnerable to different
1519 platform word lengths.
1520 * bug fix: more correct assembler syntax for GNU binutils
1521 2.18.50.0.4 support. (thanks to Marijn Schouten)
1522 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1524 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1525 declarations) successfully. (reported by Attila Lendvai)
1527 changes in sbcl-1.0.16 relative to 1.0.15:
1528 * minor incompatible change: revert the changes to sb-posix's error
1529 signaling added in 1.0.14.
1530 * minor incompatible change: change PROBE-FILE back to returning
1531 NIL whenever we can't get a truename, as was the case before 1.0.14.
1532 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1533 inherits from ERROR instead of just CONDITION.
1534 * new feature: SB-INTROSPECT can provide source locations for instances
1535 as well. (thanks to Tobias Rittweiler)
1536 * optimization: binding special variables now generates smaller code
1537 on threaded platforms.
1538 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1539 and cases where no :TEST is given but the compiler can infer that
1540 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1541 * optimization: better LOGNOT on fixnums.
1542 * optimization: modular arithmetic for a particular requested width
1543 is implemented using a tagged representation unless a better
1544 representation is available.
1545 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1546 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1547 for wellformedness and returns a specialized vector. (reported by
1548 Francois-Rene Rideau)
1549 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1550 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1551 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1552 unscheduling timer at the same time as another timer fires.
1553 * bug fix: don't reschedule timers for dead threads.
1554 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1555 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1556 bogus errors if select() was interrupted.
1557 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1559 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1560 * enhancement: cleaner backtraces for interactive interrupts, as
1561 well as other cases where the interesting frames used to be
1562 obscured by interrupt handling frames.
1563 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1564 now supported, and tracing a whole package using (TRACE "FOO") now
1565 traces SETF-functions as well.
1566 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1567 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1568 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1569 * unreadably printed representation of hash-tables now includes
1571 * bug fix: partially fixed #188: type propagation from assignments
1572 is now more efficient.
1573 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1574 'DOUBLE-FLOAT) are not flushable.
1575 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1576 full address of the object, and none of the tag bits.
1577 * bug fix: readably printing hash-tables now respects other printer
1578 control variables. (reported by Cedric St-Jean)
1579 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1580 keyword with MAKE-HASH-TABLE.
1581 * bug fix: export SB-POSIX:MKSTEMP.
1582 * bug fix: SORT was not interrupt safe.
1583 * bug fix: XREF accounts for the last node of each basic-block as
1585 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1586 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1587 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1588 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1589 create obsolete instances in the case of redefinition or
1590 obsoletion of a superclass. (thanks to Andy Hefner)
1591 * bug fix: Support for the Alpha architecture has been revived; it had
1592 suffered somewhat from lack of maintenance since sbcl-1.0.
1593 * improvements to the Windows port:
1594 ** The system detects the codepage to use at startup, instead of
1595 using the value from the saved core. (thanks to Kei Suzuki)
1597 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1598 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1599 (see documentation for details.)
1600 * revived support for OpenBSD (contributed by Josh Elsasser)
1601 * partially fixed bug #108: ROOM no longer suffers from occasional
1602 (AVER (SAP= CURRENT END)) failures.
1603 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1604 bodies no longer cause a WARNING to be signalled. (reported by
1606 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1607 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1608 the bug in TRUNCATE.) (reported by Michael Weber)
1609 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1610 no samples. (reported by Andy Hefner)
1611 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1612 no longer appear as (NIL ...) frames in backtraces.
1613 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1614 is now actually exported from SB-EXT as documented. (reported by
1616 * bug fix: sb-aclrepl now correctly understands how to inspect
1617 single-floats on 64-bit platforms where single-floats are not boxed.
1618 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1619 yet been finalized. (reported by Levente Meszaros)
1620 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1621 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1622 SBCL-specific optimize qualities.
1624 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1625 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1626 an executable in the search path, and does so in the child
1627 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1628 been removed; it can be found in the CVS history, for somebody who
1629 needs that search behavior (see the manual).
1630 * minor incompatible change: compiler policy re. weakening type
1631 checks has changed: now type checks are weakened only if SAFETY < 2
1633 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1634 unparsing of directory pathnames as files. Analogously,
1635 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1636 filename to parse into a directory pathname.
1637 * enhancement: implicit generic function creation now signals a
1638 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1639 users can bind handlers for and muffle around calls to LOAD.
1640 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1641 to be used (using the default stream external format), and allows
1642 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1643 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1644 strings and vectors whose element-type or simplicity is not fully
1645 known at compile-time.
1646 * optimization: STRING-TRIM and related functions no longer allocate
1647 a new string when no trimming needs to be performed. These functions
1648 are also faster than before when the input string has been declared
1650 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1651 * optimization: READ-LINE is significantly faster for files containing
1653 * optimization: non-open coded uses of character comparison operators
1654 (e.g. char=) no longer cons when called with more than one parameter
1655 on platforms supporting dynamic-extent allocation.
1656 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1657 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1658 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1660 * bug fix: some sequence functions elided bounds checking when
1662 * bug fix: too liberal weakening of union-type checks when SPEED >
1664 * bug fix: more bogus fixnum declarations in ROOM implementation
1667 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1668 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1669 :SYNCHRONIZED argument, which makes the hash-table safe for
1670 concurrent accesses (but not iteration.) See also:
1671 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1672 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1673 * optimization: CONCATENATE on strings is an order of magnitude faster
1674 in code compiled with (> SPEED SPACE).
1675 * optimization: SUBSEQ is ~50% faster on lists.
1676 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1677 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1678 END is smaller then START.
1679 * bug fix: SB-PROFILE will no longer report extra consing for nested
1680 calls to profiled functions.
1681 * bug fix: ROOM implementation had bogus fixnum declarations which
1682 could cause type-errors when calling ROOM on large images.
1683 * bug fix: if file compilation is aborted, the partial fasl is now
1684 deleted, and COMPILE-FILE returns NIL as the primary value.
1685 * bug fix: number of thread safety issues relating to SBCL's internal
1686 hash-table usage have been fixed.
1687 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1688 be returned from its body when the values were being returned
1689 using unknown-values return convection and the W-P-O was wrapped
1690 inside an UNWIND-PROTECT.
1691 * bug fix: sb-posix should now compile again under Windows, enabling
1692 slime to work again.
1694 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1695 * incompatible change: hash-table accessor functions are no longer
1696 automatically protected by locks. Concurrent accesses on the same hash-table
1697 from multiple threads can give inconsistent results or even corrupt the
1698 hash-table completely. Multi-threaded applications should do their own
1699 locking at the correct granularity. In the current implementation it is
1700 still safe to have multiple readers access the same table, but it's not
1701 guaranteed that this property will be maintained in future releases.
1702 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1703 and will signal an error at runtime.
1704 * enhancement: SB-THREAD package now exports a semaphore interface.
1705 * enhancement: CONS can now stack-allocate on x86 and
1706 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1708 * enhancement: nested lists can now be stack allocated on
1709 platforms providing stack allocation support.
1710 * enhancement: dynamic-extent support has been extended to support
1711 cases where there are multiple possible sources for the stack
1713 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1714 if the mutex is uncontested on Linux.
1715 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1716 as specified by the CLHS. (thanks to Tobias Rittweiler)
1717 * bug fix: NaN comparison now works on x86-64.
1718 * bug fix: CLOSE :ABORT T on a stream with pending output now
1720 * bug fix: instances of non-standard metaclasses using standard
1721 instance structure protocol sometimes missed the slot type checks
1723 * bug fix: known functions can be inlined in high-debug code.
1725 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1726 * minor incompatible change: the MSI installer on Windows no longer
1727 associates .lisp and .fasl files with the installed SBCL.
1728 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1729 on Windows. (thanks to Luis Oliviera)
1730 * new feature: SB-CLTL2 contrib module now implements
1731 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1732 * optimization: scavenging weak pointers is now more efficient,
1733 requiring O(1) instead of O(N) per weak pointer to identify
1734 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1735 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1736 method bodies using constant slot-names when the first argument is
1737 a specializer parameter for the method.
1738 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1739 names, when the class of the instance is a direct instance
1740 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1741 as slow as the constant slot-name case.)
1742 * optimization: member type construction is now O(N) instead
1744 * optimization: UNION and NUNION are now O(N+M) for large
1745 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1747 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1748 now more readable in environments like Slime which display it.
1749 (thanks to Tobias C. Rittweiler)
1750 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1751 was able to infer the correct argument type for the object on which
1752 the CAS operation was being performed.
1753 * bug fix: copy propagation interfered with parallel assignment
1754 semantics in local calls. (reported by Paul Khuong)
1755 * bug fix: the signed modular fixnum shift compiled to wrong code on
1756 x86 and x86-64. (spotted by a slight modification to some of
1759 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1760 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1761 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1762 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1764 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1765 and generic function now print the object identity for anonymous
1766 instances. (thanks to Attila Lendvai)
1767 * enhancement: as an extension to MOP, SBCL now supports SETF of
1768 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1769 (thanks to Attila Lendvai)
1770 * enhancement: sb-cover has an alternate annotation mode which puts
1771 the form annotations at the car of the form, instead of annotating
1772 it completely. The benefit of this mode is that it shows better
1773 which forms were instrumented by the compiler.
1774 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1775 by printer control variables. (reported by Dan Corkill)
1776 * bug fix: system leaked memory when delayed output was performed by
1777 the OS in smaller chunks then expected. (thanks to David Smith)
1778 * bug fix: system leaked memory when file streams were not closed
1780 * bug fix: large objects written to slow streams that were modified
1781 after the write could end up with the modified state written to
1782 the underlying file descriptor.
1783 * bug fix: multiple threads operating in parallel on the same stream
1784 could cause buffer-overflows.
1785 * bug fix: source location information is stored correctly
1786 (broken since 1.0.6). This bug would generally show up as the
1787 Slime debugger highlighting the wrong form when the sldb-show-source
1789 * bug fix: Branch forms are again annotated as branches in the sb-cover
1791 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1792 on x86-64. (reported by Gregory Vanuxem)
1793 * bug fix: EQUALP could return wrong results for structures with raw
1794 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1795 word). (reported by Vjacheslav Fyodorov)
1796 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1799 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1800 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1801 atomic compare-and-swap operations on threaded platforms.
1802 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1803 allows assigning a global minimum value to optimization qualities
1804 (overriding proclamations and declarations).
1805 * enhancement: closed over variables can be stack-allocated on x86
1807 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1809 * optimization: slot definition lookup is now O(1). This speeds up
1810 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1811 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1812 * optimization: ASSOC and MEMBER can now be open-coded for all
1813 combinations of keyword arguments when second argument is constant
1814 and SPEED >= SPACE. In other cases a specialized version is
1816 * bug fix: using obsoleted structure instances with TYPEP and
1817 generic functions now signals a sensible error.
1818 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1819 (reported by Kristoffer Kvello)
1820 * bug fix: backtrace construction is now more careful when making
1821 lisp-objects from pointers on the stack, to avoid creating bogus
1822 objects that can be seen by the GC.
1823 * bug fix: defaulting of values in contexts expecting more than 7
1824 variables now works on x86-64. (reported by Christopher Laux)
1825 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1827 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1828 as the property-list of a symbol.
1829 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1830 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1831 situations requested, are once again file-compileable. (reported
1834 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1835 * MOP improvement: support for user-defined subclasses of
1836 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1837 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1838 the expansion of DEFMETHOD, is responsible for generating a form
1839 which creates a list of specializers when evaluated. Additional
1840 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1841 debugging and introspective support.
1842 * minor incompatible change: the (unsupported) spinlock interface
1843 has changed: free spinlock now has the value NIL, and a held spinlock
1844 has the owning thread as its value.
1845 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1846 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1848 * enhancement: name of a socket-stream is now "a socket" instead of
1849 "a constant string".
1850 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1851 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1852 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1853 for generic functions. (Thanks to Tobias C. Rittweiler)
1854 * optimization: bignum printing speed has been improved by 20-40%
1855 (depending on the bignum size.)
1856 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1858 * bug fix: the cache used by the CLOS to store precomputed effective
1859 methods, slot offsets, and constant return values is now thread and
1861 * bug fix: generic function dispatch function updating is now thread
1862 and interrupt safe (in the sense that the known issues have been
1864 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1865 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1866 * bug fix: asdf systems with dependencies to the SB-POSIX or
1867 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1868 * bug fix: interrupt safety of applicable method computation has been
1871 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1872 * new contrib: sb-cover, an experimental code coverage tool, is included
1873 as a contrib module.
1874 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1875 significantly faster.
1876 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1877 produce more efficient code on x86-64 if the compiler can determine
1878 that (+ INDEX <constant>) does not require a bounds check and FOO
1879 has an element type at least 8 bits wide.
1880 * enhancement: a new, experimental synchronous timeout facility is
1881 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1882 * enhancement: when a symbol name conflict error arises, the
1883 conflicting symbols are always printed with a package prefix.
1884 (thanks to Kevin Reid)
1885 * enhancement: stepping is now once again supported on the SPARC and
1886 MIPS platforms. (It is also now more likely to work on CheneyGC
1888 * enhancement: sb-sprof can now also track and report accurate call
1890 * bug fixes: the treatment of non-standard subclasses of
1891 SB-MOP:SPECIALIZER is more correct.
1892 * incompatible change: PURIFY no longer copies the data from the
1893 dynamic space into the static and read-only spaces on platforms
1894 that use the generational garbage collector
1895 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1897 * bug fix: GC race condition occasionally resulting in crashes with
1898 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1900 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1902 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1903 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1904 * bug fix: an asynchronous interrupt could previously leave the
1905 system running with GC inhibited.
1906 * bug fix: a DECLARE form evaluated at top-level now causes an error
1907 rather than silently (or verbosely) returning NIL.
1908 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1909 result in a error being signalled due to source form lookup errors.
1910 (reported by Peter Graves)
1912 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1913 * incompatible change: removed writer methods for host-ent-name,
1914 host-ent-addresses -- changing the values did not update the DNS
1916 * minor incompatible change: changed experimental JOIN-THREAD interface
1917 * documentation: the manual now lists reader and writer methods
1918 in class slot documentation sections. (thanks to Richard M Kreuter)
1919 * documentation: unwinding from asyncronous events has been
1920 documented as unsafe.
1921 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1922 in multithreaded application code.
1923 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1924 platforms. (thanks to James Anderson for the optimization hint)
1925 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1927 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1928 variants no longer cons.
1929 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1930 their NOT- variants no longer cons.
1931 * optimization: EQUAL hash tables no longer use SXHASH for objects
1932 of all data types, but instead use an EQL hash for types for which
1933 EQUAL is the same as EQL.
1934 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1935 are significantly faster.
1936 * optimization: new STRING-OUTPUT-STREAM implementation is much
1937 faster for large outputs and conses 30% less on average.
1938 * enhancement: XREF information is now collected for references made
1939 to global variables using SYMBOL-VALUE and a constant argument.
1940 * enhancement: SIGINT now causes a specific condition
1941 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1942 * bug fix: FILE-POSITION used to signal an error in some cases where
1943 ANSI requires it to return NIL.
1944 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1945 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1946 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1948 * bug fix: bad type declaration in the CLOS implementation has
1949 been fixed. (reported by James Anderson)
1950 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1951 (thanks to Lutz Euler)
1952 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1953 required by the CLHS. (reported by Samium Gromoff)
1954 * bug fix: dead unbound variable references now signal an error.
1955 (reported by Marco Monteiro)
1956 * bug fix: / with an unused value was being deleted in safe code.
1957 (thanks to Marco Monteiro and Kevin Reid)
1958 * bug fix: number of characters that can be written onto a single
1959 line in a file is unlimited.
1960 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1961 been fixed by inhibiting interrupts for when GC is disabled.
1962 * bug fix: some interrupt safety issues with GETHASH, (SETF
1963 GETHASH), CLRHASH and REMHASH have been fixed.
1964 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1965 specifier no longer causes infinite recursion.
1966 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1967 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1968 * bug fix: an &environment argument with the correct variable information
1969 is passed to macros that are expanded during byte compilation.
1970 (reported by Samium Gromoff)
1971 * bug fix: a logic error was causing the hash function for bignums to
1972 have excessive amounts of collisions. (reported by Faré Rideau)
1973 * bug fix: modifying the contents of an array could change the return
1974 value of SXHASH on that array, which is only allowed for strings
1975 and bit vectors. (bug introduced in 0.9.16)
1976 * improvement: the x86-64/darwin port now passes all tests (except
1977 for the debugger tests) but should still be considered
1978 experimental until this is fixed.
1979 * improvement: a style-warning is signaled for CASE (etc) clauses with
1980 duplicate keys. (thanks to Kevin Reid)
1981 * improvement: macos/x86 and macos/x86-64 now use mach exception
1982 handlers for dealing with illegal instructions (for trapping and
1983 error handling) and memory protection violations (for GC).
1985 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1986 * new platform: experimental support for x86-64/darwin (MacOS).
1987 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1988 and getnameinfo sockets functions are used instead of gethostbyaddr
1989 and gethostbyname, on platforms where the newer functions are available.
1990 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1992 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1993 don't print the startup banner, but behave as if --noinform was passed
1994 as a command line argument. (thanks to Kevin Reid)
1995 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1996 * optimization: code using alien values with undeclared types is much faster.
1997 * optimization: the compiler is now able to open code SEARCH in more cases.
1998 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1999 * bug fix: using standardized COMMON-LISP special variables as loop
2000 variables no longer signals bogus package lock violations. (reported
2002 * bug fix: declaring local loop variables to be of a range-limited type
2003 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2004 (reported by Andras Simon)
2005 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2006 bugs remain on x86-64.)
2007 * bug fix: the #= and ## reader macros now interact reasonably with
2008 funcallable instances.
2009 * bug fix: type-checks for function arguments were compiled using the
2010 compiler policy settings of the wrong lexical environment (in 1.0.2
2012 * bug fix: SHADOW accepts characters as string designators, as required
2013 by the spec (thanks to Eric Marsden)
2014 * bug fix: fixed GC safety issues when foreign functions are called with
2015 non-base strings as arguments
2016 * bug fix: more consistent error output for fatal-compiler-warnings, like
2018 * bug fix: functions with proper names were showing up as NIL in
2019 backtraces (reported by Edi Weitz, regression in 1.0.2)
2021 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2022 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2023 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2024 produce more efficient code on the x86 if the compiler can determine
2025 that (+ INDEX <constant>) does not require a bounds check and FOO
2026 has an element type at least 8 bits wide.
2027 * bug fix: references to undefined variables are handled the same way
2028 in toplevel forms as in the normal compiler
2029 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2031 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2032 (thanks to Jon Buller)
2033 * improvement: faster compilation times for complex functions
2034 * improvement: added readlink support to SB-POSIX (thanks to Richard
2037 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2038 * improvement: experimental support for mach exception handling on
2039 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2041 * improvement: support for GBK external format.
2042 (thanks to Chun Tian (binghe))
2043 * improvement: the debugger now displays variables that have been closed
2044 over, in code compiled with (DEBUG 2) or higher
2045 * improvement: support for executable cores on NetBSD (thanks to
2047 * new feature: added a RESTART-FRAME debugger command
2048 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2049 be used to provide an implementation for FILE-POSITION on Gray streams
2050 (thanks to Eric Marsden)
2051 * new feature: add syslog, openlog and closelog support to SB-POSIX
2052 (thanks to Richard Kreuter)
2053 * optimization: the function call overhead in code compiled with
2054 a high DEBUG optimization setting is significantly
2055 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2056 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2057 (thanks to Tony Martinez)
2058 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2059 evaluated once (reported by Kevin Reid)
2060 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2061 works again (thanks to Kilian Sprotte)
2062 * bug fix: an error is signaled for tagbodies with duplicate tags
2063 (thanks to Stephen Wilson)
2064 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2065 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2066 stack frames from alien callbacks.
2067 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2068 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2069 65k pages (thanks to David Woodhouse)
2070 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2072 changes in sbcl-1.0.1 relative to sbcl-1.0:
2073 * new platform: FreeBSD/x86-64, including support for threading.
2074 * new feature: the compiler stores cross-referencing information
2075 about function calls (who-calls), macroexpansion (who-macroexpands)
2076 and special variables (who-binds, who-sets, who-references) for code
2077 compiled with (< SPACE 3). This information is available through the
2078 sb-introspect contrib.
2079 * new feature: users may subclass SEQUENCE, and have instances of
2080 these classes interoperate with standard Common Lisp functions if
2081 a number of methods are defined. (This feature is experimental
2082 and the interface subject to change based on feedback from SBCL
2083 users and the general community)
2084 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2085 x86/x86-64, rather than the previous fixed depth of 8
2086 * improvement: another pthread back-end of mutex "pthread-futex".
2087 * bug fix: non-ascii command-line arguments are processed correctly
2088 (thanks to Yaroslav Kavenchuk)
2089 * bug fix: non-required arguments were not passed correctly when a method
2090 defined using DEFMETHOD was called from a mop-generated method using
2091 CALL-NEXT-METHOD (reported by Pascal Costanza)
2092 * bug fix: recursion is now permitted in accessors through
2093 SLOT-UNBOUND. (reported by Pascal Costanza)
2094 * bug fix: an error was signaled at startup if the HOME environment
2095 variable was defined, but had an empty value (reported by Peter Van Eynde)
2096 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2097 signal a PROGRAM-ERROR, not a BUG.
2098 * bug fix: SB-POSIX:READDIR works when built with large file support.
2099 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2101 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2102 for better automatic indentation support. (thanks to Matt Pillsbury)
2103 * optimization: loading generic functions no longer takes O(n^2) time,
2104 proportional to the amount of methods in the generic function
2105 (reported by Todd Sabin and Jeremy Brown)
2106 * optimization: the FIND and POSITION family of sequence functions
2107 are significantly faster on arrays whose element types have been
2109 * improvements to the Windows port:
2110 ** Intermittent heap corruption problems have been fixed. (thanks
2111 to Alastair Bridgewater)
2112 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2114 ** Lisp is able to unwind foreign exception frames from alien
2115 callbacks. (thanks to Alastair Bridgewater)
2117 changes in sbcl-1.0 relative to sbcl-0.9.18:
2118 * improvement: experimental support for threading on FreeBSD/x86.
2119 (thanks to NIIMI Satoshi)
2120 * improvement: runtime option --dynamic-space-size can be used
2121 to set the size of the dynamic space reserved on startup.
2122 * improvement: floating point modes in effect are now saved in
2123 core, and restored on startup.
2124 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2125 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2126 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2127 threads are not running after *SAVE-HOOKS* have run.
2128 * improvement: writes to CLOS instance slots are type-checked in code
2129 compiled with (SAFETY 3)
2130 * improvement: floating-point exception handling on FreeBSD (thanks to
2132 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2133 (thanks to Zach Beane)
2134 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2136 * improvement: added support for the Shift-JIS external format.
2137 (contributed by NIIMI Satoshi)
2138 * improvement: callbacks are supported on Linux/PPC. (thanks to
2140 * bug fix: compiler bug triggered by a (non-standard) VALUES
2141 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2142 * bug fix: file compiler no longer confuses validated and already
2143 dumped structurres. (reported by Kaersten Poeck)
2144 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2145 fill-pointer signals a type-error as required. (thanks to
2147 * bug fix: disassemly of funcallable instances works.
2148 * bug fix: single stepping on PPC.
2149 * bug fix: fix thread-safety problems in the type system (generally
2150 manifesting as nonsensical errors like "STRING is a bad type specifier
2151 for sequences" or "The value 1 is not of type FIXNUM")
2152 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2153 (reported by Josip Gracin)
2154 * bug fix: an error is signaled for attempts to displace arrays with
2155 incompatible element types (thanks to Mario Mommer)
2156 * bug fix: more correct handling of wide characters in debug info
2157 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2158 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2159 and don't cause extra consing
2160 * optimization: MAP and MAP-INTO are significantly faster on vectors
2161 whose elements types have been declared.
2162 * Improvements to SB-SPROF:
2163 ** Support for allocation profiling
2164 ** Reduced profiling overhead, especially for long profiling runs
2165 * Improvements to the Windows port:
2166 ** floating point exceptions are now reported correctly.
2167 ** stack exhaustion detection works partially.
2168 ** more accurate GET-INTERNAL-REAL-TIME.
2169 ** better RUN-PROGRAM behaviour in case of errors in the child
2171 ** PROBE-FILE now simplifies pathnames correctly.
2172 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2173 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2174 1st 1970 (although time timezone data will be unreliable).
2175 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2177 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2178 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2179 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2181 * bug fix: two potential GC deadlocks affecting threaded builds.
2182 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2183 returns T (reported by Anton Kazennikov)
2184 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2185 with non-variable places
2186 * bug fix: remove a race condition in the setting of
2187 funcallable-instance functions, this should make threaded CLOS
2188 code more stable against memory faults.
2189 * bug fix: corruption of specials when unbinding is interrupted by an
2190 asynchronous unwind (reported by Hannu Koivisto)
2191 * improvement: the debugger will now also display local variables that
2192 are only used once, for code compiled with a DEBUG optimization quality
2195 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2196 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2197 * incompatible change: External-format support for FFI calls. The
2198 SB-ALIEN:C-STRING no longer implies an ASCII
2199 external-format. Instead the string is subject to external-format
2200 conversion. Additionally return values of type SB-ALIEN:C-STRING
2201 are by default of type (SIMPLE-ARRAY CHARACTER), not
2202 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2203 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2204 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2205 * incompatible change: SB-EXT package no longer contains the
2206 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2207 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2209 * incompatible change: the single-stepper is no longer available
2210 on Alpha, Mips and Sparc platforms.
2211 * minor incompatible change: the direct superclasses of
2212 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2213 not (STANDARD-OBJECT FUNCTION). This makes the
2214 class-precedence-lists of GENERIC-FUNCTION and
2215 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2217 * minor incompatible change: the default stream external format on
2218 non-unicode SBCL is no longer detected from the locale, but is always
2220 * new feature: Add a version of evaluator that uses an interpreter instead
2221 of the compiler. EVAL still uses the compiler by default, to switch it
2222 to use the interpreter, set the value of the variable
2223 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2224 * minor incompatible change: the single-stepper REPL has been merged
2225 with the normal debugger (see the "Stepping" heading of the debugger help
2226 for more details). The debugger command STEP will no longer switch
2227 to the single-stepper REPL.
2228 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2229 for a type now works.
2230 * bug fix: loading of default sysinit file works. (thanks to Leonid
2232 * bug fix: better detection of circularities in the file-compiler.
2233 (reported by Marco Monteiro)
2234 * bug fix: the CL pathname functions now work with files that have
2235 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2236 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2237 systems with Unix98 pty semantics.
2238 * bug fix: ASDF-INSTALL will now work with bsd tar.
2239 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2241 * bug fix: timers expiring in dead threads no longer cause a
2242 type-error (reported by Paul "Nonny Mouse").
2243 * bug fix: thanks to more lightweight single-stepper instrumentation,
2244 code compiled with (DEBUG 3) will compile and execute significantly faster,
2245 and will have more accurate type-inferencing than before
2246 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2247 whose bindings are modified
2248 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2249 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2250 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2251 CL:SOFTWARE-VERSION with proper version
2253 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2254 * feature: implemented the READER-METHOD-CLASS and
2255 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2256 as specified by AMOP.
2257 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2259 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2260 (thanks to Lutz Euler)
2261 * optimization: hashing of general arrays and vectors has been
2262 improved. (reported by Any Fingerhut)
2263 * enhancement: SB-INTROSPECT is now able to find definitions of
2264 profiled functions. (thanks to Troels Henriksen)
2265 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2266 as well, allowing compiler-macros for SETF-functions to expand.
2267 * enhancement: step-instrumentation no longer wraps known
2268 single-value functions with multiple-value context, allowing
2269 better type inference.
2270 * fixed bug #337: use of MAKE-METHOD in method combination now works
2271 even in the presence of user-defined method classes. (reported by
2272 Bruno Haible and Pascal Costanza)
2273 * fixed bug #339(c): if there are applicable methods not part of any
2274 long-form method-combination group, call INVALID-METHOD-ERROR.
2275 (reported by Bruno Haible)
2276 * fixed bug #361: the :FUNCTION initarg in the protocol for
2277 initialization of methods can now be used to override
2278 internally-produced optimized functions. (reported by Bruno
2280 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2281 system-provided lambda expression no longer cause warnings about
2282 unbound #:|pv-table| symbols.
2283 * bug fix: improved the handling of type declarations and the
2284 detection of violations for keyword arguments with non-constant
2286 * bug fix: potentially erronous calls to PATHNAME and
2287 MERGE-PATHNAMES were being flushed in some cases.
2288 (reported by Richard Kreuter)
2289 * bug fix: compiled calls to TYPEP were mishandling obsolete
2290 instances. (reported by James Bielman and Attila Lendvai)
2291 * bug fix: format strings with ~> without matching ~< no longer
2292 trigger an AVER, but signal an understandable error instead.
2293 (reported by Antonio Martinez)
2294 * bug fix: specifying an output-file without a pathname-type for
2295 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2296 of input-file instead of "fasl". (reported by Robert Dodier)
2297 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2298 (reported by James Y Knight).
2299 * bug fix: compiler-macros-function did not consider the environment
2300 argument for shadowing by local functions.
2301 * bug fix: compiler-macros expansion was inhibited by local INLINE
2303 * bug fix: inline expansions of known functions were subject to
2304 step-instrumentation in high debug policies, leading to problems
2305 with type-inference.
2306 * bug fix: compiler failed to differentiate between different CONS
2307 types in some cases.
2308 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2309 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2310 * bug fix: #368: incorrect use of expressed vs. upgraded array
2312 * bug fix: #306a: more precise unions of array types.
2313 * thread-safety improvements:
2314 ** CONDITION-WAIT could return early on Linux, if the thread was
2315 interrupted and subsequently continued with SIGCONT.
2316 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2318 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2319 * added support for the ucs-2 external format. (contributed by Ivan
2321 * minor incompatible change: pretty printing of objects of type
2322 (cons symbol) is, in the default pprint-dispatch-table, now
2323 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2325 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2326 called later in a class's lifetime, possibly as late as when the
2327 first instance of the class is created. Previously,
2328 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2329 class became finalizeable.
2330 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2331 for multibyte external-format streams. (thanks to "vbzoli")
2332 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2333 with :ALLOCATION :CLASS inherited from superclasses of the
2335 * fixed bug: anonymous classes can now be created using the :NAME
2336 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2337 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2338 * fixed bug: core-files saved with :EXECUTABLE T can again be
2339 executed when SBCL_HOME isn't set. (reported by James Knight)
2340 * fixed bug: toplevel LOCALLY forms with declarations could
2341 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2342 * fixed bug: printing from several different threads using different
2343 values of *print-case* could cause invalid output, due to
2344 some internal special variables of the printer not being bound
2345 thread-locally (reported by Max Mikhanosha)
2346 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2347 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2348 (reported by Pascal Costanza)
2349 * fixed bug: FINALIZE-INHERITANCE is called from
2350 REINITIALIZE-INSTANCE on classes when the class has previously
2351 been finalized, as required by AMOP.
2352 * minor code generation optimizations:
2353 ** better register allocation in CLOS dispatching functions
2354 ** overflow detection when coercing signed bytes to fixnums on x86-64
2355 ** is now implemented with one IMUL instruction instead of three shifts
2356 ** more efficient bit-vector access on x86 and x86-64
2357 ** more efficient access to raw structure slots on x86 and x86-64
2358 * fixed some bugs revealed by Paul Dietz' test suite:
2359 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2360 return its argument.
2362 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2363 * feature: thread support on Solaris/x86, and experimental thread support
2365 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2367 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2368 default method for SLOT-UNBOUND.
2369 * minor incompatible change: prevent the user from specializing the
2370 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2371 somewhat counter to the intent of the protocol, I (CSR) think, and
2372 additionally it just doesn't work in SBCL as currently
2373 implemented, thanks to optimizations (that are always valid for
2374 the other three SLOT-VALUEish functions, but not for the setter).
2375 * minor incompatible change: the :SB-LDB feature is now enabled by
2376 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2377 the low-level debugger.
2378 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2379 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2380 down to an SB-SYS:FD-STREAM, allowing direct communication in
2381 more cases. Temporary files and pipes are still used as a fallback
2383 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2384 on the non-reentrant C functions localtime(3) and gmtime(3).
2385 * bug fix: global optimization policy was not visible in LOCALLY and
2387 * bug fix: class objects can be used as specializers in methods.
2388 (reported by Pascal Costanza)
2389 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2390 with a type error. (reported by blitz_ on #lisp)
2391 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2392 failed with a type error. (reported by Pascal Bourguignon)
2393 * bug fix: merging pathnames against defaults with :DIRECTORY
2394 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2395 (reported by James Y Knight)
2396 * bug fix: saving large (>2GB) cores on x86-64 now works
2397 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2398 constant index and a (simple-array (signed-byte 32)) array
2399 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2400 error (patch by Robert J. Macomber)
2401 * feature: TIME now displays the amount of run-time spent in GC
2402 * bug fix: The debugger now does a better job of respecting
2403 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2404 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2405 workaround for bug 403.)
2406 * bug fix: floating point exception handling now works on FreeBSD
2407 (thanks to NIIMI Satoshi)
2408 * fixed some bugs revealed by Paul Dietz' test suite:
2409 ** MISC.641: LET-conversion were not supposed to work in late
2411 * improvements to the Win32/x86 port:
2412 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2413 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2415 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2416 * new feature: source path information is generated for macro-expansion
2417 errors for use in IDE's like Slime (thanks to Helmut Eller)
2418 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2419 * bug fix: compiler does not loop forever on an invalid type in
2421 * improvement: compilation of most CLOS applications is significantly
2423 * optimization: added a limited bytecode compiler for simple toplevel
2424 forms, speeding up compilation and FASL loading
2425 * bug fix: the statistical profiler now properly distinguishes anonymous
2428 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2429 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2430 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2431 into subclasses of the finalized class. Now user calls to
2432 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2433 system return before any subclasses are finalized.
2434 * minor incompatible change: The reader no longer ignores errors
2435 regarding non-existent packages in #+ and #- feature tests.
2436 * new feature: command line options --no-sysinit, --no-userinit to
2437 inhibit loading the corresponding init files
2438 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2439 for sending data through UDP sockets (thanks to François-René Rideau)
2440 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2441 error is signalled instead (thanks to François-René Rideau)
2442 * minor incompatible change: Error signalling behaviour of lexical
2443 operations violating package locks has changed slightly. Refer to
2444 documentation on package locks for details.
2445 * enhancement: EVAL can process IF-expressions without resorting to the
2447 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2448 constant-folded properly due to missing out-of-line functions.
2449 (reported by Mika Pihlajamäki)
2450 * bug fix: LISTEN sometimes returned T even in cases where no data was
2451 immediately available from the stream
2452 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2453 were reversed. (reported by Levente Mészáros)
2454 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2455 when given a vector displaced to an adjustable array. (reported
2457 * bug fix: derivation of float boundaries from numbers outside the
2458 appropriate float range (reported by John Wiseman)
2459 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2461 * bug fix: precomputing cache entries for generic functions with
2462 some subclasses of specializers as yet invalid does not attempt to
2463 fill a cache line with a negative offset. (reported by Levente
2465 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2466 allow condition class objects as arguments to DOCUMENTATION and
2467 (SETF DOCUMENTATION); only find and set documentation for
2468 structure names for the STRUCTURE doc-type. (suggested by Gary
2470 * improvements to the Win32/x86 port:
2471 ** (user-homedir-pathname) and default initialization file
2472 locations now know about the user's "Documents and Settings"
2473 directory (thanks to Yaroslav Kavenchuk)
2474 ** run-program is implemented (thanks to Mike Thomas)
2475 ** sockets support (thanks to Timothy Ritchey)
2476 ** better backtrace support (thanks to Alastair Bridgewater)
2477 ** sb-grovel supported
2478 ** asdf-install and sb-posix work somewhat
2479 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2480 * improvements to the Solaris/x86 port:
2481 ** works on Solaris 11/Solaris Express
2482 ** floating-point exception handling support
2483 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2484 * fixed some bugs revealed by Paul Dietz' test suite:
2485 ** REMOVE-METHOD returns its generic function argument even when
2486 the method is not one of the generic functions' methods.
2487 ** objects declared as MEMBER types can be admissible arguments to
2488 structure accessors.
2489 ** printing characters should simply be printed by the FORMAT ~:C
2491 ** compiler failure when compiling functions with hairy constant
2492 defaults for optional parameters.
2493 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2494 function, which is already optimized.
2496 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2497 * new platform: experimental support for SBCL x86/Darwin, including
2498 MacOS X 10.4.5 on Intel.
2499 * new feature: Unicode character names are now known to the system
2500 (through CHAR-NAME and NAME-CHAR).
2501 * new feature: the filesystem location of SBCL's core file is
2502 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2503 * minor incompatible change: the contrib modules SB-POSIX and
2504 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2505 this change is to make it easier to distribute
2506 location-independent binaries.
2507 * bug fix: as implied by AMOP, standardized classes no longer have
2508 slots named by external symbols of public packages. (reported by
2510 * optimization: calling functions via constant symbols -- as in
2511 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2512 via the function object as in (FUNCALL #'FOO).
2513 * optimization: on x86 and x86-64, the calling convention for the
2514 case of dealing with an unknown number of values has been altered
2515 to be friendlier to the prediction heuristics implemented,
2516 particularly with reference to CALL and RET pairing. (thanks to
2517 Alastair Bridgewater)
2518 * optimization: on x86, the code for access to thread-local symbol
2519 values and binding/unbinding of thread-local symbols is smaller.
2520 (thanks to Alastair Bridgewater)
2521 * enhancement: CONSTANTP is now able to determine constantness of
2522 more complex forms, including calls to constant-foldable standardized
2523 functions and some special forms beyond QUOTE.
2524 * fixed bug: occasional GC crashes on Solaris/x86
2525 * optimization: x86-64 supports stack allocation of results of simple
2526 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2527 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2528 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2529 (thanks to James Knight)
2530 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2531 by the standard (thanks to Stephen Compall)
2533 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2534 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2535 be used for bundling the runtime and the core file into one
2536 executable binary. This feature is not currently supported on all SBCL
2537 platforms. (thanks to James Bielman and NIIMI Satoshi)
2538 * new feature: a generational or ephemeral garbage collector is now
2539 the default on the PowerPC platform (both Linux and Darwin). The
2540 old Cheney (stop and copy) collector is a build-time option.
2541 (thanks to Cyrus Harmon, after Raymond Toy)
2542 * minor incompatible change: the method by which SBCL finds its
2543 contributed modules has changed; it no longer relies on symbolic
2544 links from an $SBCL_HOME/systems directory, but searches directly
2545 in the subdirectories of $SBCL_HOME.
2546 * enhancement: the dynamic heap size on the Linux/PPC platform is
2547 markedly larger, even using the older Cheney garbage collector.
2548 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2549 certain complicated string types. (reported by Gary King)
2550 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2551 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2552 * fixed bug: DOCUMENTATION on structures no longer signals an
2553 error if no structure type of the right name exists. (reported by
2555 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2556 applicable non-standard primary or :AROUND method on
2557 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2558 no longer cause unbound variable errors. (reported by Kevin Reid)
2559 * fixed bug: metacircle resolution in cases where methods have slots
2560 added before the slots from STANDARD-METHOD. (reported by Jean
2562 * fixed bug: the Power PC assembly code for calling into lisp
2563 sometimes computed its return address wrongly (depending on the
2564 15th bit of the address, fixed at link time). This used to
2565 manifest itself in a segmentation violation while building PCL.
2566 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2567 many others over the years)
2568 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2569 the stack pointer (treated as a signed integer) is negative.
2570 (thanks to Peter van Eynde)
2572 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2573 * new platform: experimental support for the Windows operating
2574 system has been added. (thanks to Alastair Bridgewater)
2575 * fixed several bugs in and robustified the PPC FFI (including
2576 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2577 * bug fix: allow non-simple string symbol names (reported by Paul
2579 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2581 * bug fix: saving a core corrupted callbacks on x86/x86-64
2582 * bug fix: closed a loophole in metacircularity detection and
2583 grounding in the PCL implementation of CLOS.
2584 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2585 (reported by tomppa on #lisp)
2586 * bug fix: clear the direction flag on Lisp -> C transitions, as
2587 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2588 (reported by Andrej Grozin and Hendrik Maryns)
2589 * optimization: major improvements to GC efficiency on GENCGC platforms
2590 * optimization: faster implementation of EQUAL
2591 * optimization: emit more efficient opcodes for some common
2592 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2593 * optimization: several other minor code-generation improvements on x86-64
2594 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2596 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2597 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2598 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2599 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2600 by ANSI as a generic function, and for consistency (SETF
2601 GENERIC-FUNCTION-NAME) is treated likewise.
2602 * fixed bug #233.b: make constraint propagation notice when a variable
2603 value is changed after it is referenced but before it is used
2604 * fixed bug #296: no more arbitrary behaviour from filenames with
2605 odd characters as --load arguments. (reported by Adam Warner)
2606 * fixed bug #390: :CHARACTER-SET pathname components now work as
2607 expected. (reported by Tim Daly Jr)
2608 * fixed bug #391: complicated :TYPE intersections in slot
2609 definitions no longer cause an error in PCL internals.
2610 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2611 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2612 returning the number of octets which would be written to the
2613 file-stream. (thanks to Robert J. Macomber)
2614 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2615 arguments to the internal stream functions. (thanks to David
2617 * bug fix: stack exhaustion is now handled on the x86/SunOS
2618 platform. (thanks to Daisuke Homma)
2619 * bug fix: more accurate ROOM results on GENCGC platforms
2620 * optimization: improved type inference for arithmetic-for
2621 index variables in LOOP
2622 * optimization: faster floating-point SQRT on x86-64
2623 * fixed some bugs revealed by Paul Dietz' test suite:
2624 ** DOCUMENTATION returns NIL instead of "" for method combinations
2625 that don't have a docstring
2627 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2628 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2629 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2630 therefore are not customizeable by user code (as seems to be at
2631 least permitted and maybe required by AMOP). As a consolation,
2632 however, the SBCL implementation of these functions now calls
2633 REINITIALIZE-INSTANCE as specified by AMOP.
2634 * bug fix: slot-definition documentation is propagated as per ANSI
2635 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2636 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2637 argument, as do eslotd initialization methods. (from Pascal
2638 Costanza's "Closer" project)
2639 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2640 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2642 * bug fix: it is now possible to have more than one subclass of
2643 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2644 (reported by Bruno Haible, Pascal Costanza and others)
2645 * bug fix: the dependent update protocol now works for generic
2646 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2647 and Pascal Costanza)
2648 * bug fix: condition-class instances corresponding to
2649 DEFINE-CONDITION forms are now created eagerly. (reported by
2650 Kalle Olavi Niemitalo on comp.lang.lisp)
2651 * bug fix: floating point printing is more accurate in some
2652 circumstances. (thanks to Simon Alexander)
2653 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2654 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2655 * bug fix: callbacks on OS X now preserve stack-alignment.
2656 (thanks to Cyrus Harmon)
2657 * enhancement: the x86-64 disassembler is much better at
2658 disassembling SSE instructions. (thanks to Lutz Euler)
2659 * enhancement: CHECK-TYPE on a variable now allows type-inference
2660 (thanks to Vincent Arkesteijn)
2661 * optimization: improved performance of EUC-JP external format.
2662 (thanks to NIIMI Satoshi)
2663 * optimization: performance improvements to IO on file streams of
2664 :ELEMENT-TYPE CHARACTER
2665 * optimization: much faster memory allocation on x86-64
2666 * optimization: faster garbage collections (latency and throughput)
2668 * optimization: faster bignum subtraction and division on x86 and x86-64
2669 (thanks to Lutz Euler)
2670 * optimization: more accurate type-inference for loops that use a
2671 floating point index variable or a negative step.
2673 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2674 * bug fix: add a workaround to SBCL looping infinitely at startup on
2675 Linux kernels with apparently buggy implementations of personality().
2676 (thanks to Svein Ove Aas)
2677 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2678 (thanks to David Lichteblau)
2679 * bug fix: local bindings shadow global symbol macros for
2680 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2681 * optimization: non-open coded uses of numeric comparison operators
2682 (e.g. >) no longer cons when called with more than one parameter
2683 on platforms supporting dynamic-extent allocation.
2684 * enhancement: saving cores with foreign code loaded is now supported
2685 on MIPS/Linux in addition to the previously supported platforms.
2686 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2687 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2688 * bug fix: division by zero in sb-sprof when no samples were collected
2689 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2690 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2691 (thanks to Alexander Kjeldaas)
2692 * new feature: ignoring the return values of destructive functions
2693 like NREVERSE signals a compile-time style-warning.
2694 (thanks to Kevin Reid)
2695 * new feature: the alignment of alien structure fields can be
2696 explicitly specified. (thanks to Cyrus Harmon)
2697 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2698 and dump core on SIGQUIT
2700 ** incompatible change: threads do not inherit values of specials
2701 from their parents (see manual)
2702 ** bug fix: threads stacks belonging to dead threads are freed by the
2703 next exiting thread, no need to gc to collect thread stacks anymore
2704 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2705 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2706 ** bug fix: dynamic variable and thread start related gc lossage
2707 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2709 * fixed some bugs revealed by Paul Dietz' test suite:
2710 ** SUBTYPEP is slightly more accurate on heinously complicated
2711 CONS types where some of the members have uncertain (in the
2712 NIL, NIL sense) type relationships to each other.
2714 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2715 no longer purified unless :PURIFY T is explicitly specified.
2716 ** Non-purified cores are significantly smaller than before
2718 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2719 * new feature: timers based on Zach Beane's excellent timer package
2720 * added support for the following external formats: koi8-u,
2721 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2722 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2723 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2724 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2725 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2726 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2727 * incompatible change: a threaded SBCL will no longer revert to
2728 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2729 * bug fix: interrupts are disabled until startup is complete; no
2730 more sigsegvs when receiving a signal to soon
2731 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2733 * bug fix: add a workaround for the memory randomization features in
2734 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2735 workaround will only be in effect on systems with the proc filesystem
2737 * bug fix: printing objects of type HASH-TABLE signals a
2738 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2740 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2741 have been running for over 50 days. (reported by Gilbert Baumann)
2742 * bug fix: the logic for getting names of functions gets less
2743 confused when confronded with alternate-metaclass
2744 funcallable-instances. (reported by Cyrus Harmon)
2745 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2746 consistent, even on internal alternate-metaclass objects.
2747 * bug fix: flush closure information collected by physical
2748 environment analysis prepass before the main pass. (bug reported
2750 * bug fix: compiler pack phase does not modify a hashtable, which is
2751 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2752 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2753 may be expanded. (reported by Alexander <malishev> on c.l.l)
2754 * bug fix: no more style-warnings when compiling code using LAST
2755 under high-SPEED low-SPACE settings. (reported by David Wallin
2757 * fixed some incompatibilities between SBCL's MOP and the MOP
2759 ** the METAOBJECT class is now implemented;
2760 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2761 STANDARD-OBJECT, as required;
2762 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2763 now compatible (as required by VALIDATE-SUPERCLASS); there
2764 remains a consistency requirement over the presence or absence
2765 of the FUNCTION class in the superclass list of finalized
2766 classes; see the manual for more details;
2767 ** the :AROUND method for COMPUTE-SLOTS on
2768 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2769 requested slot ordering.
2771 ** bug fix: parent thread now can be gc'ed even with a live
2773 ** bug fix: binding a special with PROGV to no value is not
2774 the same as that symbol not having been bound (thanks to
2776 ** bug fix: binding specials is thread safe (thanks to
2778 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2779 and SB-SPROF do not die with 'no handler for signal XX in
2780 interrupt_handle_now(..)' anymore
2781 ** bug fix: WITH-TIMEOUT works with multiple running threads
2782 * fixed some bugs revealed by Paul Dietz' test suite:
2783 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2784 the :method-class keyword argument.
2786 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2787 * new port: the Solaris operating system on x86 processors is now
2788 mostly supported, though some rough edges in the environment
2789 remain. (thanks to Daisuke Homma)
2790 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2791 space for its heap. (thanks to Thiemo Seufer)
2792 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2793 closures. (thanks to Thiemo Seufer)
2794 * minor incompatible change: eof selects abort in the debugger.
2795 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2796 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2798 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2799 deprecated, and will go away in a future revision of SBCL.
2800 * minor incompatible change: GC-ON and GC-OFF are no longer
2801 implemented with a counter, it does not matter how many times gc
2802 is switched on or off
2803 * bug fix: discriminating functions for generic function classes
2804 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2805 make invalid assumptions about method precedence order. (reported
2807 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2808 platforms. (thanks to Thiemo Seufer)
2809 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2810 * bug fix: correct pathname printing with printer escaping is on.
2811 (thanks to Kevin Reid)
2812 * bug fix: complex VOP definitions in "user-space" no longer trigger
2813 package locks. (reported by Zach Beane)
2814 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2815 for funcallable-instance functions, and is no different from
2817 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2818 characters in the current readtable. (reported by Nicholas Neuss)
2819 * bug fix: SUBTYPEP on various CONS types returns more a more
2820 accurate acknowledgment of its certainty.
2821 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2822 lists in some cases. This partially fixes bug 384.
2823 * flush all standard streams before prompting in the REPL and the
2825 * bug fix: signal handling and triggering gc do not conflict
2826 directly anymore, in particular a high frequency sb-sprof does
2827 not prevent gc from running
2828 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2829 approximation for timezone and DST information between the
2830 universal time epoch and the smallest negative 32-bit time_t.
2831 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2832 year 1899 so long as the encoded time is non-negative.
2833 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2834 the correct answer for non-constant rotate amounts when performing
2835 an inline 32-bit rotation.
2837 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2838 there is only one thread in the session
2839 ** bug fix: memory leak for streams created in one thread and
2840 written to in another
2841 ** bug fix: lockup when compiled with gcc4
2842 ** bug fix: race that allows the gc to be triggered when gc is
2844 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2845 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2847 ** bug fix: finished threads are gc'ed properly
2848 * fixed some bugs revealed by Paul Dietz' test suite:
2849 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2850 has arguments with a different set of applicable methods from
2851 the orignal arguments.
2852 ** The type error thrown by MAP now has a correct expected-type
2854 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2855 name a compiled function.
2856 ** Three MISC tests where a large bignum was improperly coerced to
2857 a float that couldn't represent that bignum during type
2858 derivation were fixed.
2859 ** SUBTYPEP can now handle types involving the negation of a
2860 list-form FUNCTION type.
2861 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2862 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2863 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2865 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2866 * New feature: Experimental support for bivalent streams: streams
2867 opened with :element-type :default now allow character and binary
2868 (unsigned-byte 8) I/O
2869 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2870 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2872 * bug fix: no more highly sporadic "couldn't check whether ~S is
2873 readable" when reading a stream and an interrupt hits in the middle
2874 of a select system call
2875 * compiler better recognizes complex arrays (reported by Eduardo
2877 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2878 for variables on SBCL built with linkage-tables. (reported by Luis
2880 * various error reporting improvements.
2881 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2882 (Thanks to Thiemo Seufer)
2883 * bug fix: nested reader invokations work correctly
2884 * bug fix: it is possible to have simultaneous references to foreign
2885 code and foreign data with the same name.
2887 ** added x86-64 support
2888 ** incompatible change: the threading api now works with thread
2889 objects instead of thread ids
2890 ** bug fix: threads are protected from signals and interruption when
2891 starting up or going down
2892 ** bug fix: a race where an exiting thread could lose its stack to gc
2893 ** bug fix: don't halt on infinite error in threads if possible
2894 ** fixed numerous gc deadlocks introduced in the pthread merge
2895 ** bug fix: fixed thread safety issues in read and print
2896 ** bug fix: debugger doesn't hang on session lock if interrupted at
2897 an inappropriate moment
2898 ** bug fix: run-program is now thread safe(r)
2899 ** bug fix: inner with-recursive-lock no longer releases the mutex
2900 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2901 * fixed some bugs revealed by Paul Dietz' test suite:
2902 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2903 EXPECTED-TYPE slots filled.
2904 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2906 ** MAKE-CONDITION accepts classes as type-designators.
2907 ** COMPILE may never return NIL.
2908 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2909 range before calling Unix time functions
2911 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2912 * numerous signal handling fixes to increase stability
2913 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2914 * minor incompatible change: we now correctly canonize default
2915 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2916 as per the MOP, rather than the historical (INITARG INITFUNCTION
2917 INITFORM). (reported by Bruno Haible)
2918 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2919 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2920 for more information.
2921 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2922 pathname is a directory pathname.
2923 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2924 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2926 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2927 :METACLASS argument in addition to a class name. (reported by
2928 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2929 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2930 (reported by Bruno Haible; patch from Gerd Moellmann)
2931 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2933 * bug fix: more cleanups to the floating point exception handling on
2934 x86-64 (thanks to James Knight)
2935 * bug fix: the compiler does not try to constant fold calls of
2936 COERCE and BIT-* functions when they return freshly constructed
2937 objects. (reported by Nikodemus Siivola and Paul Dietz)
2938 * optimization: improved the MIPS versions of generic (in the
2939 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2940 * optimization: direct conversion of (unsigned-byte 32) to floats on
2941 the PowerPC platform.
2942 * optimization: structure instances with raw slots now use less
2943 memory, and probably show better memory locality. (thanks to
2945 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2946 are treated as requests for stack allocation on the x86-64,
2947 Alpha-32, PPC and SPARC platforms.
2948 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2949 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2950 (thanks to Tony Martinez)
2952 ** gcing a dead thread can no longer lead to lockups
2953 ** threads block signals until they are set up properly
2954 ** errno is no longer shared by threads
2955 ** interrupt-thread restores the eflags register on x86
2956 ** fixed some lockups due to gc/thread interaction
2957 * fixed some bugs revealed by Paul Dietz' test suite:
2958 ** invalid dotted lists no longer raise a read error when
2959 *READ-SUPPRESS* is T
2960 ** signal an error if a symbol that names a declaration is used
2961 as the name of a type, or vice versa
2962 ** allow using the (declare (typespec var*)) abbreviation for
2963 (declare (type typespec var*)) with all type specifiers
2964 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2965 ** always return NIL from PPRINT-POP when OBJECT is NIL
2966 ** don't signal errors when pretty-printing malformed LABELS,
2967 FLET or MACROLET forms
2968 ** declarations in a DOLIST body are also in scope for the
2970 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2972 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2975 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2976 * fixed cross-compiler leakages that prevented building a 32-bit
2977 target with a 64-bit host compiler.
2978 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2979 opened with :IF-EXISTS :OVERWRITE.
2980 * fixed bug 281: error for an invalid qualifier in a short-form method
2981 combination method is not signalled until the faulty method is called.
2982 * bug fix: iteration variable type inferrer failed to deal with open
2983 intervals. (reported by Alan Shields)
2984 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2985 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2986 or more runtime options were provided to the sbcl binary.
2987 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2988 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2989 * optimization: there's now a fast-path for fixnum arguments in the
2990 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2991 * optimization: the code generated on x86-64 is more compact thanks
2992 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2993 * bug fix: floating-point exception handling now partly works on
2994 x86-64. (Thanks to James Knight)
2995 * improvement to the MIPS backend from Thiemo Seufer: C-style
2996 64-bit long long arguments and return values to alien functions
2998 * fixed some bugs revealed by Paul Dietz' test suite:
2999 ** the type-error signalled from WARN has a filled-in DATUM slot.
3000 ** the type-error required when a stream is not associated with
3001 a file has the stream as its datum.
3002 ** type-errors on single-floats on x86-64 no longer have
3003 :INVALID-OBJECT as the datum
3004 ** the type-errors signalled for invalid function names now have
3005 a correct expected type
3006 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3007 for structures defined with a :TYPE. Documentation strings for
3008 typed structures are no longer immediately discarded
3009 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3010 broadcast streams and synonym streams. FILE-LENGTH now also works
3011 on broadcast streams.
3013 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3014 * incompatible change: the --noprogrammer option, deprecated since
3015 version 0.7.5, has been removed. Please use the equivalent
3016 --disable-debugger option instead.
3017 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3019 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3020 inoperational for a while now) has been completely removed.
3021 * null lexical environments are now printed as #<NULL-LEXENV>,
3022 significantly reducing the amount of clutter in typical backtraces.
3023 * documentation on weak pointers, finalization, and after GC hooks
3024 has been added to the manual.
3025 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3026 as other specialized array types, is much faster. SUBSEQ and
3027 COPY-SEQ on such arrays have also been sped up.
3028 * optimization: EQL is now more efficient when at least other argument
3029 is known to be of type (OR FIXNUM (NOT NUMBER)).
3030 * fixed bug: the runtime is now less vulnerable to changes in the
3031 size of the SBCL object on OS X, and virtual memory is reserved for
3032 all spaces that need to be at a fixed address.
3033 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3034 * fixed bug: finalizers and after GC hooks that cause consing are now
3036 * fixed bug: compiler error messages and summaries are now printed to
3037 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3038 * fixed inference of the upper bound of an iteration variable.
3039 (reported by Rajat Datta).
3040 * fixed bug 211e: calling local functions with duplicated constant
3041 keyword argument no longer causes a bogus style warning about an
3043 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3044 ftype declaration to be disregarded. (reported by Dave Roberts)
3045 * fixed bug 373: caused by erronous compilation of references to alien
3046 variables in the runtime on ppc/darwin.
3047 * fixed bug 376: CONJUGATE type deriver.
3048 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3049 (reported by Baughn on #lisp)
3050 * a cross-compiler bug on non-x86 platforms has been identified and
3051 fixed. (thanks to Bruno Haible)
3052 * improvements to the MIPS runtime code for increased stability.
3053 (thanks to Thiemo Seufer)
3054 * increased the maximimum compact environment size to allow
3055 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3056 * partial workaround for bug 135: don't name the function we're
3057 calling for hairy cases of EVAL, so as not to accumulate one environment
3058 entry per call to EVAL. (reported by Kevin Reid)
3059 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3060 * optimization: type testing for non-vector arrays should be faster.
3061 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3063 * bug fix: setting 31st element of a bit vector to zero did not work
3065 * bug fix: redefining a class definition which failed due to a
3066 previous accessor / function clash now works (but see BUGS entry
3067 #380 for more problems in this area). (thanks to Zach Beane)
3068 * the long form of DEFINE-METHOD-COMBINATION disables method group
3069 checking when given a single method group with pattern *. (thanks
3071 * on x86 compiler supports stack allocation of results of simple
3072 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3073 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3074 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3075 * fixed some bugs related to Unicode integration:
3076 ** the restarts for recovering from input and output encoding
3077 errors only appear when there is in fact such an error to
3079 * fixed some bugs revealed by Paul Dietz' test suite:
3080 ** MISC.549 and similar: late transformation of unsafe type
3081 assertions into derived types caused unexpected code
3083 ** SCALE-FLOAT type deriver is less wrong.
3084 ** type derivers for EXP, LOG and similar functions compute result
3085 types for complex arguments better.
3086 ** (MISC.563) CONJUGATE type deriver works for very restricted
3088 ** out-of-line type testers for character strings are available.
3089 ** EQUAL compiler transform understands specialness of objects
3091 ** accessing double-floats stored on the stack now works on x86-64.
3092 ** debugger internals could sometimes create invalid lispobjs,
3093 resulting in GC crashes.
3094 ** MISC.548: type check weakening can convert required type into
3096 ** initialization forms for bindings are not in scope of free special
3099 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3100 * incompatible change: thread support for non-NPTL systems has
3101 been removed - locking is buggy and unreliable. A threaded
3102 SBCL build will now warn at startup and refuse to create
3103 new threads, unless futex support is detected in the kernel
3104 * incompatible change: the top level REPL now has only an ABORT
3105 restart associated with it, not TOPLEVEL and ABORT as it used to.
3106 TOP and TOPLEVEL are now available as debugger commands for
3107 returning to the top level.
3108 * incompatible change: forms evaluated in the REPL now use the
3109 global optimization policy.
3110 * incompatible change: user- and system-initialization files are
3111 no longer processed with LOAD, but by READ and EVAL; hence the
3112 global optimization policy, startup package, readtable, etc,
3114 * The .fasl file format number has been incremented because of
3115 various incompatible changes.
3116 * internal entry point details and argument counts no longer appear
3117 in backtraces unless explicitly requested by setting
3118 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3119 * built-in and standard functions no longer have names like "top
3120 level local call to FOO".
3121 * fixed bug 32: functions defined in non-null lexical environments
3122 now have more legible printed representation
3123 * fixed bug 33: functions defined in non-null lexical environemnts
3124 are now more amenable to inspection by INSPECT.
3125 * workaround for bug 354: XEPs no longer appear in backtraces unless
3126 explicitly requested.
3127 * fixed bug: receiving the signal which results from attempting to
3128 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3129 SIGBUS on other *BSDs) on architectures where the C stack is also
3130 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3131 to debugger confusion or wild instability. (reported by Cheuksan
3133 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3134 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3135 (reported by Lutz Euler)
3136 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3137 compiled code. (reported by Paul Dietz)
3138 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3139 specialized parameter to a method to something that is not TYPEP
3140 the specializer is now possible.
3141 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3142 face of package deletion.
3143 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3144 pathname. (reported by David Tolpin on c.l.l)
3145 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3146 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3147 STRING-STREAM and FILE-STREAM, respectively.
3148 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3149 than previously; in addition, its test suite is now run on build.
3150 (thanks to Luke Gorrie)
3151 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3152 * optimization: added a immediate representation for single-floats
3154 * fixed some bugs revealed by Paul Dietz' test suite:
3155 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3156 ** attempting to create a package with a colliding nickname causes
3157 correctable errors to be signalled.
3158 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3159 ** several x86-64 backend bugs related to sign-extension of immediate
3162 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3163 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3164 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3166 * fixed loading of multiply forward-referenced layouts.
3167 (thanks to Cheuksan Wang)
3168 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3169 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3170 (see COMPILE-FILE documentation for details of :PRINT option)
3171 * fixed bugs 19 and 317: fixed-format floating point printing is
3172 more accurate. This also fixes a bug reported by Adam Warner
3173 related to the ~@F format directive.
3174 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3176 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3177 dispatch table if the from-char is a dispatch macro character.
3178 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3179 by the wordsize no longer ignore the last word. (reported by Lutz
3181 * fixed bug in type checking of dynamic-extent variables. (reported
3183 * optimization: sequence traversal functions use their freedom to
3184 coerce function designators to functions.
3185 * optimization: code with many calls to CLOS methods specialized on
3186 CLOS classes has had redundant type checks removed.
3187 * optimization: added declarations to speed up operations that access
3188 the internal character database (for example STRING-UPCASE)
3189 * optimization: comparison operations between floats and sufficiently small
3190 fixnums no longer create extra rationals
3191 * fixed some bugs related to Unicode integration:
3192 ** portions of multibyte characters at the end of buffers for
3193 character-based file input are correctly transferred to the
3194 start of the buffer at the next read.
3195 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3196 passing it through to OPEN.
3197 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3198 argument given to internal calls to OPEN.
3199 ** the built-in comment readers (introduced by character sequences
3200 ";" and "#|") are more forgiving to encoding errors; they will
3201 STYLE-WARN and then attempt to resync the stream at a character
3202 boundary. (thanks to Teemu Kalvas)
3203 * fixed some bugs in the x86-64 port:
3204 ** Negative short int return values from c-calls are sign-extended
3206 ** The stack is aligned to 16-bytes for c-calls, as required by
3207 the ABI. (thanks to Cheuksan Wang)
3208 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3209 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3210 for enums. (thanks to Vincent Arkesteijn)
3211 ** Multiple small optimizations and bugfixes for floating point
3213 * fixed some bugs revealed by Paul Dietz' test suite:
3214 ** Space, Tab, Linefeed, Return and Page have the invalid
3215 secondary constituent character trait.
3216 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3218 ** WITH-INPUT-FROM-STRING should only update the index place on
3220 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3221 works more reliably.
3222 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3223 with one-dimensional arrays with fill pointers.
3224 ** TYPE-OF failed on a complex with an integer realpart and a
3226 ** compiler failure during type inference for the code of form
3227 (IF (EQL X (THE ...)) ...) (MISC.535).
3229 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3230 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3231 platform. The port supports 61-bit fixnums, large memory spaces
3232 and reloading shared object files.
3233 * enhancement: saving cores with foreign code loaded is now
3234 supported on ppc/Darwin in addition to the previously supported
3236 * enhancement: the statistical profiler now walks deeper into the
3237 call stack for more meaningful call-graphs and accrued time
3238 reports (x86/x86-64 only). It also now reports time spent in
3240 * enhancement: it is now possible to trace most individual methods
3241 of a generic function in addition to tracing the generic function
3243 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3245 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3246 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3247 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3248 produces an error. (thanks to Vincent Arkesteijn)
3249 * bug fix: NAMESTRING on pathnames with :WILD components in their
3250 directories works correctly. (thanks to Artem V. Andreev)
3251 * fixed bug 125: compiler preserves identity of closures. (reported
3253 * bug fixed: functions with &REST arguments sometimes failed with
3254 "Undefined function" when compiled with (DEBUG 3). (reported by
3256 * bug fix: overflow during compiling of setting element of a bit
3257 vector with constant index and value. (reported by Timmy Douglas)
3258 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3259 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3260 * on x86 compiler partially supports stack allocation of dynamic-extent
3262 * GO and RETURN-FROM do not check the extent of their exit points
3263 when compiled with SAFETY 0.
3264 * fixed some bugs related to Unicode integration:
3265 ** encoding and decoding errors are now much more robustly
3266 handled; it should now be possible to recover even from invalid
3267 input or output to the terminal. (thanks to Teemu Kalvas)
3268 ** provided a first cut at implementing STRING-TO-OCTETS and
3269 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3270 ** altered the SB-MD5 contributed module slightly, changing the
3271 interface just enough for it to be supportable for builds where
3272 lisp characters are not eight bits.
3273 * fixed some bugs revealed by Paul Dietz' test suite:
3274 ** the FORMATTER-generated functions for ~V[ conditionals require
3275 the correct number of arguments.
3276 ** READ-FROM-STRING returns the mandated second value when applied
3277 to displaced strings.
3278 ** the #\Rubout and #\Backspace characters are treated as invalid
3279 constituent characters by the tokenizer.
3281 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3282 * new feature: reloading changed shared object files with
3283 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3284 * new feature: references to foreign variables and functions
3285 can now be compiled and loaded before the corresponding shared
3286 object file is loaded, as long as the foreign definitions are
3287 available at runtime.
3288 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3289 supported. (thanks to Dan Debertin)
3290 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3291 just keywords. (thanks to Vincent Arkesteijn)
3292 * fixed bug #331: structure-class instances corresponding to
3293 DEFSTRUCT forms are now created eagerly.
3294 * fixed bug #345: backtraces from calls to undefined functions work
3295 on x86 as well. Related bug #61 is now also partially fixed on x86
3296 (backtraces from throws to unknown catch tags.)
3297 * bug fix: lambda-list parsing is now stricter vrt. order and number
3298 of lambda-list keywords.
3299 * bug fix: as specified by AMOP, an error is signalled if a
3300 class-option appears multiple times in a DEFCLASS form. (reported
3302 * bug fix: RANDOM can be compiled when the compiler derives the type
3303 of its numeric argument as a disjoint set of small integers.
3304 (reported by Paul Dietz)
3305 * bug fix: starting a core saved with shared objects loaded when
3306 those objects are not available no longer causes threaded SBCL to
3307 hang. (reported by Sean Ross)
3308 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3310 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3311 argument, which must always be NIL. (reported by Kalle Niemitalo)
3312 * bug fix: printing 1.0d+23 no longer results in an error.
3313 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3314 * bug fix: structure slot setters preserve evaluation order. (thanks
3316 * fixed some bugs related to Unicode integration:
3317 ** RUN-PROGRAM can allow its child to take input from a Lisp
3318 stream. (reported by Stefan Scholl)
3319 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3320 locales. (reported by Ken Causey)
3321 * fixed some bugs revealed by Paul Dietz' test suite:
3322 ** INCF, DECF and REMF evaluate their place form as specified in
3324 ** FORMATTER expands ~{ ~} iteration directives with V or #
3325 parameters correctly.
3326 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3327 consequent uses no arguments correctly.
3328 ** the system has a partial understanding of the (COMPLEX RATIO)
3330 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3333 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3334 * new feature: a build-time option (controlled by the :SB-UNICODE
3335 keyword feature, enabled by default) for building the system with
3336 support for the entire 21-bit character space defined by the
3338 * new feature: the system now has rudimentary external-format
3339 support; the primary user-visible change at this time is that
3340 characters with the high bit set (such as lower-case-e-acute) will
3341 print correctly to a terminal in a UTF-8 environment.
3342 * minor incompatible change: BASE-CHAR no longer names a class;
3343 however, CHARACTER continues to do so, as required by ANSI.
3344 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3345 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3346 has been moved to the SB-EXT package (temporarily re-exported from
3348 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3349 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3351 * fixed bug #351: better error-handlind and reporting for malformed
3353 * fixed bug #350: bignum-printing is now more memory-efficient,
3354 allowing printing of very large bignums, eg. (expt 2 10000000).
3355 (reported by Bruno Haible)
3356 * fixed bug #302: better primitive-type selection for intersection
3358 * fixed bug #308: non-graphic characters now all have names, as
3359 required. (reported by Bruno Haible)
3360 * bug fix: redefining a class with different superclasses now correctly
3361 removes it from the direct-subclasses of its previous superclasses.
3362 (reported by David Morse)
3363 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3364 new value now works. (reported by Bruno Haible)
3365 * bug fix: correct canonicalization of multiple non-standard slot
3366 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3367 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3368 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3369 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3370 now exists, an signals an error.
3371 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3372 during macroexpansion for non-iteration variables as well. (reported
3373 by Bruno Haible for CMUCL)
3374 * bug fix: Cyclic structures and unprintable objects in compiler
3375 messages no longer cause errors. (reported by Bruno Haible)
3376 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3377 and READ-FROM-STRING all now return a primary value of NIL if
3378 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3379 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3380 (reported by Bruno Haible for CMUCL)
3381 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3382 do not designate a condition. (reported by Bruno Haible for
3384 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3385 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3386 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3387 permitting resolution in favour of any of the conflicting symbols.
3388 (reported by Bruno Haible for CMUCL)
3389 * bug fix: EQUAL compiler optimizations is less aggressive on
3390 strings which can potentially compare true despite having distinct
3391 specialized array element types.
3392 * bug fix: unit enumerations can be defined without dividing by
3393 zero. (thanks to Vincent Arkesteijn)
3394 * FORMAT compile-time argument count checking has been enhanced.
3395 (report from Bruno Haible for CMUCL)
3396 * a partial workaround for the bug 262: the compiler does not try to
3397 inline-expand a local function doing RETURN-FROM from a deleted
3398 BLOCK. (thanks to Peter Denno for the bug report and to David
3399 Wragg for the simple test case)
3400 * fixed some bugs revealed by Paul Dietz' test suite:
3401 ** RENAME-PACKAGE allows all package designators as new package
3403 ** constraint propagation and lambda variable substitution are
3404 more cautious in dealing with partially deleted code.
3405 ** compiler sometimes lost reoptimization passes.
3406 ** CERROR, given a condition as condition designator, passes its
3407 remaining arguments to the continue format control without
3409 ** Case-altering FORMAT directives work correctly on non-ASCII
3411 ** The REAL type specifier handles bounds outside the floating
3412 point ranges without signalling FLOATING-POINT-OVERFLOW.
3413 ** Functions with IR1-transformations can create intercomponent
3414 references to global functions.
3415 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3417 ** FORMAT ~R treats a nil value for its first parameter correctly.
3419 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3420 * enhancement: saving cores with foreign code loaded is now
3421 supported on x86/NetBSD and sparc/Linux in addition to the previously
3422 supported platforms.
3423 * bug fix: on some platforms repeated installations caused multiple
3424 copies of HTML documentation to be installed -- should not happen
3425 any more. (reported by Stefan Scholl)
3426 * bug fix: parsing self-recursive alien record types multiple times
3427 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3428 original patch by Helmut Eller for CMUCL)
3429 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3430 (thanks to Richard Kreuter)
3431 * bug fix: defining classes whose accessors are methods on existing
3432 generic functions in other (locked) packages no longer signals
3433 bogus package lock violations. (reported by François-René Rideau)
3434 * bug fix: special variables as DEFMETHOD parameters no longer have
3435 associated bogus type declarations. (reported by David Wragg and
3437 * bug fix: read-write consistency on streams of element-type
3438 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3439 * bug fix: redefiniton of the only method of a generic function with
3440 no DEFGENERIC no longer emits a full WARNING. In addition,
3441 redefinition of generic functions with no DEFGENERIC to an
3442 incompatible lambda list now signals an error. (thanks to Zach
3444 * bug fix: DEFGENERIC now works even when there's a function of the
3445 same name in an enclosing lexical environment. (thanks to Zach
3447 * fixed compiler failure, caused by instrumenting code during
3448 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3449 * optimization: added loop analysis and improved register allocation
3450 * fixed some bugs revealed by Paul Dietz' test suite:
3451 ** POSITION on displaced vectors with non-zero displacement
3452 returns the right answer.
3453 ** (SIMPLE-STRING) is a valid type specifier for sequence
3455 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3457 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3458 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3460 ** The justification version of the FORMAT ~< directive treats
3461 non-zero minpad parameter correctly.
3463 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3464 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3465 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3466 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3467 the supported interface.
3468 * new feature: Single-stepping of code compiled with DEBUG 2 or
3469 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3470 * new feature: saving cores with foreign code loaded is now
3471 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3472 Timothy Moore's work for CMUCL)
3473 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3474 parameters to * instead of NIL if no initform is supplied.
3475 (reported by Johan Bockgaard)
3476 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3477 correctly when FUNCALL appears as the car of the form. Note:
3478 despite this FUNCALL forms are not currently subject to
3479 compiler-macro expansion. (port of Raymond Toy's fix for the
3480 same from CMUCL, reported by Johan Bockgaard)
3481 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3482 (thanks for Teemu Kalvas)
3483 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3484 case instead of terminating the iteration (thanks for Julian
3485 Squires, Sean Champ and Raymond Toy)
3486 * bug fix: incorrect expansion of defgeneric that caused a style
3487 warning. (thanks for Zach Beane)
3488 * bug fix: slot accessor effective method computation works properly
3489 for classes with multiple non-standard applicable methods on
3490 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3491 * on x86 compiler supports stack allocation of results of LIST and
3492 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3493 CMUCL implementation by Gerd Moellmann)
3494 * fixed some bugs revealed by Paul Dietz' test suite:
3495 ** FORMAT strings with both the ~<~:;~> form of the justification
3496 directive and pretty-printing directives cause an error.
3498 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3499 * incompatible change: the internal functions
3500 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3501 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3502 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3503 instead of the old functions.
3504 * new feature: on platforms where "dladdr" is available foreign
3505 function names now appear in backtraces. (based on Helmut Eller's
3507 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3508 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3510 * documentation: ASDF manual is now distributed with SBCL.
3511 * bug fix: SBCL can now load its contributed modules with REQUIRE
3512 even if the system-provided entries have been removed from
3513 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3515 * bug fix: backtraces involving undefined functions or assembly
3516 routines are more informative. (thanks to Brian Downing)
3517 * bug fix: mutually referent alien structures now work correctly.
3518 (reported by Rick Taube)
3519 * bug fix: structures defined by WITH-ALIEN can be referred to
3520 within other definitions in the same WITH-ALIEN.
3521 * bug fix: division operators (MOD, TRUNCATE and the like) with
3522 constant zero divisors and integer dividends no longer generate
3524 * bug fix: provide default methods for INPUT-STREAM-P and
3525 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3526 * bug fix: improve the detection and resolution of MOP metacycles
3527 (where effective method computation depends on the generic function
3528 having its effective method computed). (reported by Bruno Haible)
3529 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3530 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3531 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3532 * bug fix: pathnames with relative directory components can be
3533 represented relative to default pathnames.
3534 * optimization: in taking the GCD of bignums, reduce the two bignums
3535 to approximately the same size (using Euclid's algorithm) before
3536 applying the more sophisticated binary GCD. (thanks to Juho
3538 * optimization: COUNT on bitvectors now operates word-at-a-time.
3539 * optimization: ASH with a positive, but not necessarily constant,
3540 (leftwards) shift, when in a modular context, is compiled to a
3542 * fixed some bugs revealed by Paul Dietz' test suite:
3543 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3544 if the corresponding argument is NIL.
3545 ** FORMAT directives accepting a minpad parameter treat negative
3547 ** literal commas as character parameters to FORMAT directives are
3549 ** literal spaces directly after ~<Newline> directives within a
3550 format-logical-block (~:< ~@:>) do not induce :FILL-style
3551 conditional newlines.
3552 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3553 as specified: it no longer includes conditional newlines).
3554 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3556 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3557 :PER-LINE-PREFIX argument does not evaluate to a string.
3559 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3560 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3561 the manual for details; for now, package locks can be disabled by
3562 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3563 if no major problems are found then it is likely that they will be
3564 compiled in unconditionally.
3565 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3566 unsupported operators on all platforms. To load a shared library
3567 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3568 object file, link it into a shared library outside of SBCL and
3569 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3571 * bug workaround: ROOM T and the GC were not working together
3572 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3573 reporting facility aren't preserved. That reporting has been
3574 disabled, so now until and unless someone figures out how to make it
3575 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3576 * minor incompatible change: as threatened around sbcl-0.8.0, the
3577 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3578 The symbols are also exported from SB-PCL for backwards
3579 compatibility, but more so than before SB-PCL should be treated as
3580 an implementation-internal package.
3581 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3583 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3584 It is known as of this release not to work on the Alpha, however.
3585 * fixed bug #167: errors signalled due to illegal syntax in method
3586 bodies are now more legible.
3587 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3588 designators and can hence be used with TYPEP.
3589 * fixed bug #333: CHECK-TYPE now ensures that the type error
3590 signalled, if any, has the right object to be accessed by
3591 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3592 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3593 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3595 * fixed bug #334: programmatic addition of slots using specialized
3596 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3597 and :ALLOCATION :CLASS slots.
3598 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3599 float exponents. (rereported by Peter Seibel)
3600 * fixed a bug: #\Space (and other whitespace characters) are no
3601 longer considered to be macro characters in standard syntax by
3602 GET-MACRO-CHARACTER.
3603 * fixed bug: initialization of condition class metaobjects no longer
3604 causes an instance of the condition to be created. (reported by
3606 * fixed bug: it is now possible to have slots such that
3607 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3608 description is neither :INSTANCE nor :CLASS.
3609 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3610 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3611 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3612 non-standard SLOT-DEFINITION-ALLOCATION values.
3613 * fixed bugs: various race conditions handling exiting threads.
3614 CL-PPCRE's thread torture test now passes.
3615 * fixed arguably-a-bug: GC time proportional to number of threads in
3616 system even when most of them are idle
3617 * optimization: improved performance of BIT and SBIT on bit-vectors.
3618 * .fasl file incompatibility: The fasl file version number has
3619 been incremented because of changes associated with package locks.
3621 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3622 * minor incompatible change: the system no longer provides
3623 optimization hints (conditions which are TYPEP
3624 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3625 mode; these hints are still emitted when higher SPEED optimization
3627 * new contrib module: a sampling profiler (profiling by statistical
3628 sampling, rather than by instrumenting functions) is available as
3629 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3630 * the behaviour of the standard function ED is now customizeable by
3631 third parties through a hook variable: see ED's documentation
3632 string for information on the protocol.
3633 * the compiler no longer emits efficiency notes for (FUNCALL X)
3634 when the type of X is uncertain under default optimization
3636 * fixed bug 276: mutating a binding of a specialized parameter to a
3637 method to something that is not TYPEP the specializer is now
3639 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3640 exhibit the required behaviour on the x86 platform. (thanks to
3641 Peter van Eynde, Eric Marsden and Bruno Haible)
3642 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3643 even for difficult arguments. (reported by Peter Graves)
3644 * fixed bug 141a: the backquote printer now descends quoted
3646 * fixed another bug in backquote printing: no more destructive
3647 modification of the form's list structure. (reported by Brian
3649 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3650 move between its address being taken and the call to
3651 interrupt_thread, fixing a crashing race condition.
3652 * the SB-POSIX contrib implementation has been adjusted so that it
3653 no longer exhibits ridiculously poor performance when constructing
3654 instances corresponding to C structs.
3656 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3657 * minor incompatible change: the sb-grovel contrib now treats C
3658 structures as alien (in the sense of SB-ALIEN) objects rather than
3659 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3660 has implications for memory management of client code
3661 (sb-grovel-returned objects must now be manually managed) and for
3662 type safety (alien objects now have full types).
3663 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3664 used to control emission of compiler diagnostics, rather than the
3665 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3666 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3667 quality should be considered deprecated.
3668 * install.sh now installs the user manual as well
3669 * (not quite a new documentable feature, but worth considering in
3670 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3671 beginnings of a semantically meaningful condition hierarchy is
3672 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3674 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3675 designator as the defaults argument.
3676 * fixed bug: Displaced arrays whose displaced-to array has become
3677 too small now cause ARRAY-DIMENSION to signal an error, providing
3678 for safer bounds-checking. (reported by Bruno Haible)
3679 * fixed bug: DEFCLASS slot definitions with identical :READER and
3680 :WRITER names now signal a reasonable error. (reported by Thomas
3682 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3684 * fixed bug: Invalid slot specification errors now print correctly.
3685 (thanks to Zach Beane)
3686 * fixed bug 320: Shared to local slot value transfers in class
3687 redefinitions now happen corrently from superclasses as
3688 well. (reported by Bruno Haible)
3689 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3691 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3692 improper lists correctly. (reported by Bruno Haible)
3693 * fixed bug 313: source-transform for <fun-name> was erroneously
3694 applied to a call of a value of a variable with name <fun-name>.
3695 (reported by Antonio Menezes Leitao)
3696 * fixed bug 307: The obsolete instance protocol ensures that
3697 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3698 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3699 remove dead unknown-values globs from the middle of the stack.
3700 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3701 easier to resume long computations after using *BREAK-ON-SIGNALS*
3702 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3703 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3704 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3705 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3706 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3707 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3709 * fixed a (fairly theoretical) bug in string printing: if
3710 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3711 does not have array-element-type equal to the most general string
3713 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3714 function name. (thanks to Nikodemus Siivola)
3715 * fixed bug: compile-time format string checker failed on
3716 non-closed ~{. (reported by Thomas F Burdick)
3717 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3718 don't warn on legal loop code involving more than one aggregate
3719 boolean. (thanks to Nikodemus Siivola)
3720 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3721 in keyword position to MAKE-PACKAGE was not being reported as
3723 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3724 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3726 * fixed bugs 280 and 312: the checking for multiple definitions in a
3727 file is less likely to become confused by uses of inline
3729 * fixed bug: the #S reader macro performs the keyword coercion
3730 specified for slot names. (reported by Kalle Niemitalo)
3731 * fixed bug: lambda lists may contain symbols whose names start with
3732 & but are not lambda-list-keywords; their occurrence triggers a
3734 * fixed bug 321: define-method-combination argument lambda lists do
3735 not cause invalid code to be generated when &optional or &aux
3736 variables have default values. (reported by Bruno Haible)
3737 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3738 have CLOS classes; this appears also to have fixed reported
3739 instability in stack exhaustion detection.
3740 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3741 MUFFLE-WARNING when no associated restart is present is now
3743 * optimization: rearranged the expansion of various defining macros
3744 so that each expands into only one top-level form in a
3745 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3747 * optimization: used a previously little-used slot in symbols to
3748 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3750 * fixed some bugs revealed by Paul Dietz' test suite:
3751 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3753 ** Fixed an optimization bug related to inheritance of initforms
3754 from local to shared slots.
3755 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3756 ** CAST optimizer forgot to flush argument derived type.
3757 ** print/read consistency on floats is now orders of magnitude
3758 more likely. (thanks also to Bruno Haible for a similar report
3760 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3761 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3762 for objects of type REAL. Make it so.
3763 ** SXHASH is specified (infelicitously) to respect similarity,
3764 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3765 it so. (thanks to Markus Ziegler)
3766 ** on the Alpha, the compiler succeeds in compiling functions
3767 returning a known number of arguments greater than 63.
3768 ** fixed handling of invalid NIL arguments in keyword position
3770 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3772 ** provided a readably-printable representation for RANDOM-STATE
3774 ** ensured that pathnames, where they have a namestring, always
3775 print using #P"..." syntax.
3777 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3778 * Support for the forthcoming 2.0 version of the NetBSD kernel
3779 running on x86 hardware has been added. (thanks to Perry
3780 E. Metzger most immediately, and others for their past work)
3781 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3782 current release version; SBCL's OpenBSD support had been broken
3783 since about the time of OpenBSD's switch to ELF binary format.)
3784 * [placeholder for DX summary]
3785 ** user code with &REST lists declared dynamic-extent, under high
3786 speed or space and low safety and debug optimization policy.
3787 * The manual has been converted to Texinfo format and the debugger
3788 chapter from the cmucl manual has been added.
3789 * A facility has been added to extract documentation strings from
3790 sbcl and store them as Texinfo-formatted snippets for inclusion in
3791 the manual (via Texinfo's @include directive)
3792 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3793 the test case to Dave Roberts)
3794 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3795 pointers. (reported by Sean Ross)
3796 * bug fix: PROFILE output is printed nicely even for large numerical
3797 values. (thanks to Zach Beane)
3798 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3799 greater than 32 handle EOF correctly.
3800 * bug fix: on X86 an immediate argument of the IMUL instruction is
3801 correctly printed in disassembly. (thanks to Lutz Euler)
3802 * bug fix: class slots in redefined classes preserve their old
3803 values. (thanks to Bruno Haible and Nikodemus Siivola)
3804 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3805 succeeds. (reported by Marco Baringer)
3806 * fixed some bugs revealed by Paul Dietz' test suite:
3807 ** READ-SEQUENCE now works on ECHO-STREAMs.
3808 ** RATIONALIZE works more according to its specification. (thanks
3811 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3812 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3813 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3814 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3815 should matter to you only if you rebind the printer control
3816 variables and then find you want different bindings in the
3817 debugger than in the ordinary execution of your program.)
3818 * The runtime build system has been tweaked to support building
3819 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3820 assembler and linker. (thanks to Nikodemus Siivola)
3821 * Unbound, undefined, undeclared variables now trigger full
3822 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3823 more often programmer error than deliberate exploitation of undefined
3825 * optimization: the hash algorithm for strings has changed to one
3826 that is less vulnerable to spurious collisions. (thanks to Juho
3828 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3829 needless bounds checking. (thanks to Juho Snellman)
3830 * optimization: implemented multiplication as a modular
3831 (UNSIGNED-BYTE 32) operation on the PPC backend.
3832 * fixed some bugs revealed by Paul Dietz' test suite:
3833 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3835 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3836 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3837 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3839 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3841 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3843 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3844 their output stream on EOF from read.
3845 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3846 have been read to end-of-file.
3847 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3849 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3850 description of determination of which consecutive characters
3852 ** Printing the "Space" character with escaping on now yields "#\\ ",
3853 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3854 ** Reading floating-point numbers with *READ-BASE* set to a number
3855 less than 10 works correctly.
3856 ** Reading floating-point numbers with *READ-BASE* set to a number
3857 more than 10 works correctly.
3858 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3859 the readtable currently in effect.
3861 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3862 * minor incompatible change: parsing of namestrings on a physical
3863 (Unix) host has changed; numbers after the final #\. in a
3864 namestring are no longer interpreted as a version field. This is
3865 intented to be largely invisible to the user, except that the
3866 meaning of the namestring "*.*.*" has changed: it now refers to a
3867 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3868 should usually be replaced by
3869 (make-pathname :name :wild :type :wild :version :wild)
3870 with the added benefit that this is more likely to be portable.
3871 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3872 option to OPEN now signals an error if the file being opened
3873 exists; this may have an impact on existing code.
3874 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3875 signals received, on the PowerPC platforms (both Linux and
3876 Darwin). (thanks to Pierre Mai for pointing out the location of
3878 * several fixes on OS X: The system now builds and runs cleanly on
3879 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3880 (thanks to Brian Mastenbrook)
3881 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3882 second-resolution: integer multiples of 1/3600 between -24 and 24.
3883 (thanks to Vincent Arkesteijn)
3884 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3885 type when called with 1 argument; PEEK-CHAR checked type of
3886 PEEK-TYPE only after having read first character from a
3887 stream. (reported by Peter Graves)
3888 * bug fix: the garbage collector now has much better locality
3889 behaviour, and in particular no longer treats all memory as being
3890 exhausted when many small objects point to each other in a deeply
3892 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3893 recognized as being TYPEP their class.
3894 * bug fix: the PUSHNEW documentation string has been corrected.
3895 (thanks to Vincent Arkesteijn)
3896 * bug fix: defaulting of the value for the last of an atypically
3897 large number of multiple values being bound was not being
3898 performed correctly on the Alpha or PPC platforms
3899 * optimization: implemented multiplication as a modular
3900 (UNSIGNED-BYTE 32) operation on the x86 backend.
3901 * optimization: SEARCH on simple-base-strings can now be open-coded.
3902 (see also contrib/compiler-extras.lisp for inspiration for
3903 teaching the compiler about the Boyer-Moore algorithm).
3904 * value, returned by MAX (and MIN) called with several EQUALP, but
3905 not EQL, arguments now does not depend on compiler settings.
3906 * fixed some bugs revealed by Paul Dietz' test suite:
3907 ** in stack analysis liveness information is propagated from
3908 non-local entry points.
3909 ** pathwise CAST removing failed when the CAST node did not start
3911 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3912 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3914 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3915 host is already defined.
3916 ** RENAME-FILE works on streams instead of signalling an internal
3918 ** PEEK-CHAR uses the current readtable when determining whether
3919 or not a character is whitespace.
3920 ** MERGE-PATHNAMES handles the case when the pathname does not
3921 specify a name while the default-pathname specifies a version.
3922 ** Pathnames now stand a better chance of respecting print/read
3924 ** Attempting to use standardized file system operators with a
3925 pathname with invalid :DIRECTORY components signals a
3927 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3929 ** DIRECTORY on logical pathnames is more correct.
3930 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3931 signal a TYPE-ERROR if their argument is not a stream.
3932 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3933 designator argument does not designate a stream.
3934 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3935 examining the synonym.
3936 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3938 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3939 element-type larger than ([UN]SIGNED-BYTE 32).
3941 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3942 * When built with the :SB-FUTEX feature, threaded builds now take
3943 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3944 for faster/more reliable mutex and condition variable support.
3945 * Incompatible change (but one you probably shouldn't have been using
3946 anyway): the interface and code for arbitrating between multiple
3947 threads in the same user session has been redesigned.
3948 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3949 error when called without an explicit environment argument.
3950 (thanks to Nikodemus Siivola)
3951 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3952 confused about their position. (thanks to Adam Warner and Gerd
3954 * bug fix: Pretty printing backquoted forms with unquotations in the
3955 argument list position of various code constructs such as LAMBDA
3956 now works correctly. (reported by Paul Dietz)
3957 * bug fix: Pretty printing unquotations no longer loses all
3958 stream position information.
3959 * optimization: performance of string output streams is now less
3960 poor for multiple small sequence writes.
3961 * optimization: performance of CSUBTYPEP in the presence of complex
3962 expressions involving CONS and NOT many times has been improved.
3963 (reported by Paul Dietz)
3964 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3966 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3967 streams for the REPL, for the debugger, and so on. (thanks to
3969 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3970 * fixed some bugs revealed by Paul Dietz' test suite:
3971 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3972 is ignored if it is too small, rather than propagating through
3973 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3974 ** extremely complex negations of CONS types were not being
3975 sufficiently canonicalized, leading to inconsistencies in
3977 ** VALUES tranformer lost derived type.
3979 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3980 * fixed a bootstrapping bug: the build process no longer assumes
3981 that the various BOOLE-related constants have the same value in
3982 host and target lisps. (noted by Paul Dietz' test suite on an
3983 SBCL binary built from CLISP)
3984 * The system can now be dynamically linked on the MIPS platform,
3985 which enables dynamic loading of foreign code from Lisp. (thanks
3986 to Ralf Baechle for discussions on the MIPS ABI)
3987 * The system now records debugging information for its own source
3988 files in a filesystem-position-independent manner, relative to
3989 the "SYS" logical host.
3990 * fixed a compiler bug: MV-LET convertion did not check references
3991 to the "max args" entry point. (reported by Brian Downing)
3992 * tweaked disassembly notes to be less confident about proclaiming
3993 some instruction as an LRA. (thanks to Brian Downing)
3994 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3995 now each have their own history, command character, and other
3996 characteristics. (thanks to David Lichteblau)
3997 * fixed some bugs revealed by Paul Dietz' test suite:
3998 ** compiler failure in compiling LOGAND expressions including a
4000 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4001 shift greater than 32.
4002 ** FLUSH-DEST did not mark blocks for type check regeneration.
4003 ** HANDLER-CASE failed to accept declarations in handler clauses
4004 in some circumstances.
4006 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4007 * New code in contrib/sb-introspect (still probably not entirely
4008 stable yet) provides some support for smart Lisp development
4009 environments like SLIME.
4010 * The conditions signalled for errors occurring when loading .fasl
4011 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4012 in a way which should help ASDF recover gracefully.
4013 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4014 stuff has been cleaned up. If you code contrib/ stuff, this might
4015 affect you, and you can look at contrib/README, contrib/STANDARDS,
4016 and/or the 0.8.4.27 diff to check.
4017 * In full calls the compiler now does not generate checks for declared
4018 argument types for all arguments.
4019 * various threading fixes
4020 ** and some experimental patches which didn't make it into
4021 the main tree for this release, but which are shipped in
4022 contrib/experimental-thread.patch as a possible fix for some
4023 failures (deadlock, spinning...) in GC-intensive multithreaded
4025 * fixed PPC build problem (source code incompatibility of different
4026 library versions): added offsetof() hackery which attempts to divine
4027 where glibc maintainers put uc_mcontext today
4028 * fixed bug 282: compiler does not trust type assertions while passing
4029 arguments to a full call.
4030 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4031 &OPTIONAL VALUES type parameter.
4032 * fix bug 214: algorithm for noting rejected templates is now more
4033 similar to that of template seletion. (also reported by rydis on
4035 * fixed bug 141b: printing backquoted information readably and prettily
4036 inserts a space where necessary.
4037 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4038 (CHARACTER 10) are now reported as errors, rather than propagated
4039 as unknown types. (reported by piso on #lisp)
4040 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4041 with values NIL and :ERROR. (thanks to Milan Zamazal)
4042 * fixed bug 191c: CLOS now does proper keyword argument checking as
4043 described in CLHS 7.6.5 and 7.6.5.1.
4044 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4045 longer raise an error; further, using a list as a for-as-arithmetic
4046 counter now raises a meaningful error.
4047 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4048 now understood by sequence creation functions such as MAKE-SEQUENCE
4050 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4051 a STRING-INPUT-STREAM.
4052 * compiler enhancement: SIGNUM is now better able to derive the type
4054 * type declarations inside WITH-SLOTS are checked. (reported by
4056 * fixed some bugs revealed by Paul Dietz' test suite:
4057 ** incorrect optimization of TRUNCATE for a positive first
4058 argument and negative second.
4059 ** compiler failure in let-convertion during flushing dead code.
4060 ** compiler failure while deriving type of TRUNCATE on an
4061 interval, containing 0.
4062 ** ASH of a negative bignum by a negative bignum count now returns
4064 ** intersection of CONS types now canonicalizes properly, fixing
4065 inconsistencies in SUBTYPEP.
4067 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4068 * incompatible change: The --disable-debugger command line
4069 option now clobbers the debugger at a more fundamental
4070 level, by redefining #'INVOKE-DEBUGGER instead of by
4071 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4072 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4073 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4074 enter the debugger REPL and then suffer recursive errors
4075 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4076 while under the new system, BREAK in --disable-debugger mode
4077 terminates the system just as an unhandled error would.
4078 * fixed compiler performance when processing loops with a step >1;
4079 * bug fix: DOCUMENTATION now retrieves generic function
4080 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4081 support has been systematized, and now supports the methods
4082 specified by ANSI, along with a default method and a method for
4083 slot documentation. (reported by Nathan Froyd)
4084 * bug fix: effective methods associated with a generic function are
4085 no longer cached over a change of that generic function's method
4086 combination. (reported by Andreas Fuchs)
4087 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4088 names a non-existent directory. (thanks to Andreas Fuchs)
4089 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4090 the PPC platform, lead to stack corruption; this has been fixed.
4091 (reported by Rainer Joswig)
4092 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4093 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4094 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4095 arithmetic in general, is now much more reliable on the PPC
4097 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4098 platform now returns the right answer.
4099 * optimization: restored some effective method precomputation in
4100 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4101 precomputation is now tunable.
4102 * optimization: compiler-internal data structure use has been
4103 reviewed, and changes have been made that should improve the
4104 performance of the compiler by about 20%.
4105 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4106 simple-base-strings and simple-bit-vectors is improved.
4107 * optimization: the optimization of 32-bit logical and arithmetic
4108 functions introduced in version 0.8.3 on the x86 has been
4109 implemented on the mips, ppc and sparc platforms; an
4110 implementation of the same facility, but for 64-bit arithmetic,
4111 has been added for the alpha.
4112 * microoptimization: the compiler is better able to make use of the
4113 x86 LEA instruction for multiplication by constants.
4114 * bug fix: in some situations compiler did not report usage of
4115 generic arithmetic in (SPEED 3) policy.
4116 * bug 145b fix: compiler used wrong type specifier while converting
4117 MEMBER-types to numeric.
4118 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4120 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4121 index argument now works properly on the Alpha platform.
4122 * bug fix: floating point exception treatment on the Alpha platform
4124 * bug fix: FILE-POSITION works much better on string input and
4125 output streams. (thanks to Nikodemus Siivola)
4126 * bug fix: many threading/garbage collection symptoms sorted.
4127 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4128 might be pseudo-atomic.
4129 * internal change: Stopping for GC is now done with signals not
4130 ptrace. GC is now done in whichever thread wanted it, instead of
4132 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4134 * bug fix: result form in DO is not contained in the implicit
4136 * incompatible change: ICR structure is changed; the value part of
4137 CONTINUATION is now called LVAR; corresponding functions are
4138 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4139 * added type deriver for ISQRT (thanks to Robert E. Brown).
4140 * bug fix: better support for loading from the command line when an
4141 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4143 * fixed some bugs revealed by Paul Dietz' test suite:
4144 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4145 ** ROUND and FROUND now give the right answer when given very
4146 small float arguments.
4147 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4149 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4150 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4151 ** LCM should return a non-negative integer.
4152 ** PARSE-INTEGER returned the index of a terminator instead of the
4153 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4154 ** PARSE-INTEGER returned an incorrect index being applied to a
4156 ** LCM with two arguments of 0 returns 0 rather than signalling
4158 ** unsigned addition of a 32-bit constant with the high bit set no
4159 longer causes an internal compiler error on the x86.
4160 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4161 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4162 with negative last argument.
4163 ** byte specifiers with zero size and position no longer cause
4164 an error during type derivation.
4165 ** bignum multiplication on the Alpha platform now returns the
4167 * porting: The system now builds on SuSE AMD64, although it still
4168 generates a 32-bit binary.
4169 * .fasl file incompatibility: The fasl file version number has
4170 been incremented (because of the changes to internal compiler
4171 data structures referred to above).
4173 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4174 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4175 more accurately, on the Darwin kernel running on PowerPC hardware.
4176 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4177 * Compiler code deletion notes now signal a condition of type
4178 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4179 an associated MUFFLE-WARNING restart.
4180 * The compiler now performs limited argument count validation of
4181 constant format strings in FORMAT, and where appropriate in ERROR,
4182 CERROR and WARN. (thanks to Gerd Moellmann)
4183 * New ASDF-INSTALL contrib can be used for automatic download and
4184 installation of third-party Lisp code from CCLAN or other sites
4186 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4187 which forces another thread to execute a function supplied by the
4189 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4190 now accept and act upon their :ELEMENT-TYPE keyword argument.
4191 (reported by Martin Atzmueller, Edi Weitz)
4192 * bug fix: FILE-POSITION now accepts position designators up to
4193 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4194 is the greater. (thanks to Patrik Nordebo)
4195 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4196 Kalle Olavi Niemitalo)
4197 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4198 printable. (reported by Eric Marsden)
4199 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4200 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4201 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4202 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4203 (thanks to Stig Sandoe)
4204 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4205 UNREAD-CHAR now correctly includes the unread character in the
4206 target sequence. (thanks to Gerd Moellmann)
4207 * bug fix in threaded builds: the system can now be suspended and
4208 resumed by shell job control with minimal disruption.
4209 * bug fixes in times and timezones >2038AD
4210 * better handling of "where is GNU make?" problem in build scripts
4211 (thanks to Nikodemus Siivola)
4212 * new optimization: inside a named function any reference to a
4213 function with the same name is considered to be a self-reference;
4214 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4215 optimization quality.
4216 * new optimization on x86: logical functions and + now have
4217 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4218 used when the result is truncated to 32 bits.
4219 * VALUES declaration is partially enabled.
4220 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4221 * fixed some bugs revealed by Paul Dietz' test suite:
4222 ** The system now obeys the constraint imposed by
4223 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4224 types form a lattice under type intersection.
4225 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4226 ** ASSOC now ignores NIL elements in an alist.
4227 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4228 and (1+ MOST-POSITIVE-FIXNUM) answers.
4229 ** The addition of a method with invalid qualifiers to a generic
4230 function does not cause an error to be signalled immediately;
4231 a warning is signalled, and the error is generated only on
4232 calling the generic function.
4233 * changed .fasl file version number, in part to add type codes for
4234 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4235 obscure ANSI requirements
4237 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4238 * fixed bug 148: failure to inline-expand a local function left
4239 garbage, confusing the compiler.
4240 * fixed bugs 3cd: structure slot readers perform type check if the
4241 slot can have an invalid value (i.e. it is either not initialized
4242 or can be written with a less specific slot writer).
4243 * bug fix: the compiler now traps array references to elements off
4244 the end of an array; previously, the bounds checking in some
4245 circumstances could go off-by-one.
4246 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4248 * type declarations for array element types now obey the description
4249 on the CLHS page "Declaration TYPE", as per discussions on
4250 sbcl-help around 2003-05-08. This means that a declaration
4251 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4252 declaration, all references to BAR will be asserted or assumed
4253 (with THE, so dependent on compiler policy) to involve objects of
4254 type FOO. Note that no such declaration is implied in
4255 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4256 * declared types of functions from the "Conditions"
4257 chapter. (reported by Paul Dietz)
4258 * bug fix: CERROR accepts a function as its first argument.
4259 * bug fix: NTH an NTHCDR accept a bignum as index
4260 arguments. (reported by Adam Warner)
4261 * optimization: character compare routines now optimize comparing
4262 against a constant character. (reported by Gilbert Baumann)
4263 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4264 argument now works properly on the MIPS platform.
4265 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4266 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4267 declared to have a functional type, does not cause an error
4269 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4270 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4271 * fixed bug: if last continuation of a deleted block has a
4272 destination, this destination should be deleted too. (reported by
4274 * fixed a bug in the bootstrap process: the host compiler's values
4275 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4276 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4277 test case from Patrik Nordebo)
4278 * improved the ability of the disassembler on the PPC platform to
4279 provide helpful disassembly notes.
4280 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4281 the class in more cases than previously.
4282 * bug fix: FILE-POSITION now understands :START and :END for
4283 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4284 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4285 8) data. (thanks to David Lichteblau)
4286 * bug fix: it is possible to add a method to a generic function
4287 without lambda list.
4288 * bug fix: reader failed to signal END-OF-FILE inside an
4289 object representation. (reported by Nikodemus Siivola)
4290 * fixed some bugs revealed by Paul Dietz' test suite:
4291 ** LAST and [N]BUTLAST should accept a bignum.
4292 ** condition slot accessors are methods.
4293 ** (VECTOR NIL) is a subtype of STRING.
4295 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4296 * minor incompatible change: some nonsensical specialized lambda
4297 lists (used in DEFMETHOD) which were previously ignored now signal
4299 * minor incompatible change: the system is now aware of the types of
4300 variables in the COMMON-LISP package, and will signal errors for
4301 most violations of these type constraints (where previously they
4302 were silently accepted).
4303 * minor incompatible change: COMPILE-FILE now uses the freedom
4304 afforded (ANSI 3.2.2.3) to use derived function types for
4305 functions defined in the same file. This also permits the system
4306 to warn on static type mismatches and function
4307 redefinition. (Currently it does not work with high DEBUG level.)
4308 * minor incompatible change: VALUES declaration is disabled.
4309 * When issuing notes, the compiler now signals a condition of type
4310 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4311 restart for use in user handlers. It is expected that the
4312 COMPILER-NOTE condition will eventually become a condition
4313 supertype to a hierarchy of note types, which will then be
4314 handleable in a similar fashion. However, at the moment, no such
4315 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4316 but it's an implementation detail, not a classification for the
4318 * Changes in type checking closed the following bugs:
4319 ** type checking of unused values (192b, 194d, 203);
4320 ** template selection based on unsafe type assertions (192c, 236);
4321 ** type checking in branches (194bc).
4322 * A short form of VALUES type specifier has ANSI meaning (it has
4323 increased the number of situations when SBCL cannot perform type
4325 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4326 keywords or constants is permissible.
4327 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4328 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4329 classes. (thanks to Antonio Martinez)
4330 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4331 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4332 argument to a pretty-print stream. Instead, it leaves any such
4333 operations to DESCRIBE-OBJECT methods.
4334 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4336 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4337 lambda lists. (thanks to David Lichteblau)
4338 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4339 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4340 (thanks to Gerd Moellmann)
4341 * fixed bug 246: increased compilation speed of long
4342 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4344 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4346 * DEFCONSTANT now throws a condition of type
4347 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4348 constant to a non-EQL value; CONTINUE and ABORT restarts
4349 respectively change and preserve the value.
4350 * fixed bug 63: The code walker, part of the implementation of CLOS,
4351 is now better at handling symbol macros.
4352 * bug fix: There is no longer an internal implementation type named
4353 CL:LENGTH. (reported by Raymond Toy)
4354 * bug fix: In macro-like defining macros/special operators the
4355 implicit block does not enclose the lambda list.
4356 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4357 enclosed in parentheses) are not suitable as type specifiers, and
4358 their use properly signals an error now.
4359 * bug fix: An argument count mismatch for a type specifier in code
4360 being compiled no longer causes an unhandled error at compile
4361 time, but signals a compile-time warning.
4362 * fixed simple vector readable printing
4363 * bug fix: DESCRIBE takes more care over whether the class
4364 precedence list slot of a class is bound before accessing it.
4365 (reported by Markus Krummenacker)
4366 * bug fix: FORMATTER can successfully compile pretty-printer format
4367 strings which use variants of the ~* directive inside.
4368 * bug fix: SEARCH now applies its TEST predicate to the elements of
4369 the arguments in the correct order. (thanks to Wolfhard Buss)
4370 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4371 in type inference. (thanks to Robert E. Brown)
4372 * bug fix: Reading in symbols with an explicit package name of ""
4373 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4374 * fixed some bugs revealed by Paul Dietz' test suite:
4375 ** NIL is now allowed as a structure slot name.
4376 ** Arbitrary numbers, not just REALs, are allowed in certain
4377 circumstances in LOOP for-as-arithmetic clauses.
4378 ** Multiple class redefinitions before slot access no longer
4379 causes a type error.
4380 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4381 association between the name and a class.
4382 ** Generic functions with non-standard method-combination and over
4383 five methods all of which return constants no longer return NIL
4384 after the first few invocations. (thanks to Gerd Moellmann)
4385 ** CALL-NEXT-METHOD with no arguments now passes the original
4386 values of the arguments, even in the presence of assignment.
4387 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4389 ** DISASSEMBLE works with closures and funcallable instances.
4390 ** ADD-METHOD now returns the generic function, not the new method.
4391 ** FIND-METHOD signals an error if the lengths of the specializers
4392 is incompatible with the generic function, even if the ERRORP
4394 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4395 which its argument is a member.
4396 ** DEFCLASS only redefines the class named by its class-name
4397 argument if that name is the proper name of the class;
4398 otherwise, it creates a new class.
4399 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4400 of the UNBOUND-SLOT condition to the name of the slot.
4401 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4402 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4403 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4404 SLOT-MAKUNBOUND in the specified fashion.
4406 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4407 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4408 cross-compilation host. As a consequence, we can now bootstrap our
4409 way up to SBCL starting with a bare gcc toolchain and human-readable
4410 source code (first the source to CLISP, then the source to SBCL).
4411 * A contributed module containing a partial implementation of the
4412 simple-streams interface has been included. (thanks to Rudi
4414 * A contributed module implementing the RFC1321 Message Digest
4415 Algorithm, known as MD5, has been included.
4416 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4417 no longer has any effect, as the code controlled by this feature
4418 has been deleted. (As far as we know, no-one has ever built using
4419 this feature, and its semantics were confused in any case).
4420 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4421 work on conditions (as required by the ANSI specification),
4422 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4423 expected behaviour on conditions. Users should note, however,
4424 that such behaviour is not required by the ANSI specification,
4425 and so use of this behaviour may render their code unportable.
4426 * fixed some bugs revealed by Paul Dietz' test suite:
4427 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4429 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4430 ** SXHASH on condition objects no longer returns NIL.
4431 ** :ALLOCATION :CLASS slots are better treated; their values are
4432 updated on class redefinition, and initforms inherited from
4433 superclasses are applied.
4434 ** REMOVE-METHOD returns its generic function argument even when
4435 no method was removed.
4436 ** SHARED-INITIALIZE now initializes the values of the requested
4437 slots, including those with :ALLOCATION :CLASS.
4438 ** ALLOCATE-INSTANCE now works on structure classes defined via
4439 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4441 ** SLOT-EXISTS-P now works on conditions, as well as structures
4443 ** MAKE-LOAD-FORM now has the required methods on
4444 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4445 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4446 keyword, and now implements the SLOT-NAMES argument.
4447 ** methods with &OPTIONAL arguments no longer allow too many
4448 arguments to be passed in the call without error.
4449 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4450 option is consistent with the required arguments of the generic
4451 function lambda list.
4452 * bug fix: REQUIRE accepts a string designator. (Thanks to
4454 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4455 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4456 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4457 * bug fix: The compiler now checks for duplicated variables in macro
4459 * bug fix: SETQ on globals returns the correct value.
4460 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4461 not a COMPILER-ERROR (followed by some other strange error on
4462 choosing the CONTINUE restart).
4463 * bug fix: make.sh and friends are now more consistent in the way that
4464 they look for GNU "make".
4466 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4467 * experimental native threads support (on x86 Linux >=2.4 only).
4468 This is not compiled in by default: you need to add :SB-THREAD to
4469 the target features. See the "Beyond ANSI" chapter of the manual
4471 * fix for longstanding nonANSIism: The old distinction between
4472 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4473 The return value from CL:FIND-CLASS is now a CLOS class, and
4474 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4475 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4476 * An interface to the MetaObject Protocol, as described in Kiczales,
4477 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4478 MIT Press, 1991, is available from the SB-MOP package.
4479 * incompatible change: the SB-PCL package should now be considered
4480 a private implementation detail, and no longer a semi-private MOP
4482 * minor incompatible change: due to rearrangement for threads, the
4483 control stack and binding stack are now allocated at arbitrary
4484 addresses instead of being hardcoded per-port. Users affected by
4485 this probably have to be doing advanced things with shared
4486 libraries, and will know who they are.
4487 * minor incompatible change: Previously, all --eval forms used were
4488 processed with READ before any of them were processed with EVAL.
4489 Now each --eval form is processed with both READ and EVAL before
4490 the next --eval form is processed. (Thus package operations like
4491 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4492 work as the user might reasonably expect.)
4493 * minor incompatible change: *STANDARD-INPUT* is now only an
4494 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4496 * minor incompatible change: Y-OR-N-P is now character-oriented,
4497 not line oriented. Also, YES-OR-NO-P now works without errors.
4498 (thanks to Antonio Martinez)
4499 * sb-aclrepl module improvements: an integrated inspector, added
4500 repl features, and a bug fix to :trace command.
4501 * Known functions, which cannot be open coded by the backend, are
4502 considered to be able to check types of their arguments. (fixing
4503 a bug report by Nathan J. Froyd)
4504 * fixed a bug in computing method discriminating functions: It is
4505 now possible to define methods specialized on classes which have
4506 forward-referenced superclasses. (thanks to Gerd Moellmann)
4507 * fixed evaluation order in optional entries (reported by Gilbert
4509 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4510 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4511 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4512 required-by-AMOP NAME argument, as well as CLASS and
4513 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4514 * fixed bug 20: DEFMETHOD can define methods using names that are
4515 not the proper names of classes to designate class specializers.
4516 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4517 Unix file descriptors, instead of blowing up. (thanks to Antonio
4519 * Garbage collection refactoring: user-visible change is that a
4520 call to the GC function during WITHOUT-GCING will not do garbage
4521 collection until the end of the WITHOUT-GCING. If you were doing
4522 this you were probably losing anyway.
4523 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4524 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4525 TYPEP the latter but not the former.
4526 * The compiler issues a full WARNING for calls to undefined functions
4527 with names from the CL package.
4528 * MAP-INTO for a vector destination is open coded. (reported by
4529 Brian Downing on c.l.l)
4530 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4531 documentation string.
4532 * fixed some bugs revealed by Paul Dietz' test suite:
4533 ** COPY-ALIST now signals an error if its argument is a dotted
4535 ** Condition slots are now accessed more correctly in the presence
4536 of multiple initargs for a given slot.
4537 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4538 exclude restarts of the same name associated with a different
4540 ** DEFCLASS of forward-referenced classes with another
4541 forward-referenced class in the superclasses list no longer
4543 ** Condition slots are now initialized once each, not multiple
4544 times. (thanks to Gerd Moellmann)
4545 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4547 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4548 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4549 arguments contain duplicated elements.
4550 ** RESTART-CASE understands local macros.
4551 ** RESTART-CASE associates exactly its own restarts with a condition.
4552 ** ENDP in safe mode checks its argument to be of type LIST.
4553 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4554 in question is unbound.
4555 ** Optimized MAKE-INSTANCE functions no longer cause internal
4556 assertion failures in the presence of duplicate initargs.
4557 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4558 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4559 propagated even in the ctor optimized implementation of
4561 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4563 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4564 * a better implementation of SXHASH on (simple) bit vectors,
4565 measured both in execution speed and in distribution of results
4566 over the positive fixnums, has been installed. Likewise, a better
4567 implementation of EQUAL for simple bit vectors is now available.
4568 * fixed CEILING optimization for a divisor of form 2^k.
4569 * fixed bug 240 (emitting extra style warnings "using the lexical
4570 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4571 by Antonio Martinez)
4572 * fixed SXHASH, giving different results for NIL depending on type
4573 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4574 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4575 variable. (found by Rolf Wester)
4576 * SBCL does not ignore type declarations for special
4577 variables. (reported by rif on c.l.l 2003-03-05)
4578 * some bug fixes in contrib/sb-aclrepl/
4579 * fixed some bugs revealed by Paul Dietz' test suite:
4580 ** a bug in the CONS type specifier, whereby the CAR and CDR
4581 types got intertwined, has been fixed;
4582 ** the type system is now able to reason about the interaction
4583 between INTEGER and RATIO types more completely;
4584 ** APPEND, [N]REVERSE and NRECONC check that those their
4585 arguments, which must be proper lists, are really so;
4586 ** An array specialized to be unable to hold elements has been
4587 implemented, as required -- yes, really -- by ANSI;
4588 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4589 on malformed property lists;
4591 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4592 * incompatible packaging change: in line with Unix convention,
4593 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4594 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4595 * REQUIRE and PROVIDE are now optionally capable of doing something
4596 useful. See the documentation string for REQUIRE.
4597 * infrastructure for a managed SBCL contrib system: contributed
4598 modules in this release include:
4599 ** the ASDF system definition facility;
4600 ** an interface to the BSD Sockets API;
4601 ** an ACL-like convenience interface to the repl;
4602 (thanks to Kevin Rosenberg)
4603 ** an implementation of ROTATE-BYTE, with efficient implementation
4605 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4606 gives a closer approximation to the right answer than previously.
4607 (thanks to Raymond Toy)
4608 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4609 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4610 optional environment arguments, as required by ANSI.
4611 * fixed bugs in other functions taking environment objects, allowing
4612 calls with an explicit NIL environment argument to be compiled
4614 * fixed bug 228: primary return values from
4615 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4616 COMPILE or FUNCTION.
4617 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4618 :TYPE will no longer signal errors on innocuous objects.
4619 * fixed bug 231b: SETQ is better at respecting type declarations in
4620 the lexical environment.
4621 * fixed a bug in DEFCLASS: classes named by symbols with no or
4622 unprintable packages can now be defined.
4623 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4624 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4625 * fixed compiler failure related to checking types of functions.
4626 (reported by Robert E. Brown)
4627 * the compiler is now much more consistent in its error-checking
4628 treatment of bounding index arguments to sequence functions: in
4629 (SAFETY 3) code, errors will be signalled in almost all cases if
4630 invalid sequence bounding indices are passed to functions defined
4631 by ANSI to operate on sequences.
4632 * fixed a bug in the build procedure: documentation of SBCL-specific
4633 packages is now preserved and available in the final Lisp image.
4634 * lifted FDEFINITION lookup out of loops in the implementation of
4635 many list operations. (thanks to Robert E. Brown)
4636 * fixed a bug in the reader: the #n# reader macro now works for
4637 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4638 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4639 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4640 E. Brown and Tony Martinez respectively)
4641 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4642 SLOT-BOUNDP: in particular, it is now able to optimize them much
4643 better, and is now not vulnerable to having packages renamed.
4644 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4645 always called when a slot is not present in an instance. (thanks
4647 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4648 longer signal an error on unreading a character following EOF on
4649 the previous constituent stream. (thanks to Tony Martinez)
4650 * fixed some bugs revealed by Paul Dietz' test suite:
4651 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4652 not just nonnegative fixnums;
4653 ** the logical bit-array operators such as BIT-AND now accept an
4654 explicit NIL for their "opt-arg" argument (to indicate a
4655 freshly-consed result bit-array);
4656 ** ELT now signals an error on an invalid sequence index in safe
4658 ** the type system is now cleverer about negations of numeric
4659 types, and consequently understands the BIGNUM and RATIO types
4661 ** the type system is now cleverer about the interaction between
4662 INTEGER and RATIO types: while bugs still remain, many more
4663 cases are accurately computed;
4664 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4665 if it is in the last clause;
4666 ** CONSTANTLY now correctly returns a side-effect-free function in
4668 ** DECLARE is no longer treated as a special-operator; in
4669 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4670 * incremented fasl file version number due to the change in the
4671 DEFSTRUCT-SLOT-DESCRIPTION structure.
4673 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4674 * minor incompatible change: code processed by the "interpreter" or
4675 EVAL now has a compilation optimization policy of (DEBUG 2)
4676 (changed from (DEBUG 1)) to improve debuggability of interactive
4677 development, and to allow the use of the debug RETURN command in
4679 * an experimental implementation of the RETURN command for the
4680 debugger has been included. (thanks to Frederik Kuivinen)
4681 * fixed bug 62: constraints were not propagated into a loop.
4682 * fixed bug in embedded calls of SORT (reported and investigated by
4684 * fixed some bugs revealed by Paul Dietz' test suite:
4685 ** printing and reading of arrays with some dimensions having
4686 length 0 (thanks to Gerd Moellmann);
4687 ** BOA constructor with &AUX argument without a default value does
4688 not cause a type error;
4689 ** CONSTANTP now returns true for all self-evaluating objects.
4691 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4692 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4693 accessors that are related by inheritance, as specified in the
4694 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4695 Valtteri Vuorikoski)
4696 * The compiler is now able to inline functions that were defined in
4697 a complex lexical environment (e.g. inside a MACROLET).
4698 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4700 * Support for the upcoming FreeBSD-5.0 release has been included.
4701 (thanks to Dag-Erling Smorgrav)
4702 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4703 effect when it is not in a toplevel context.
4704 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4705 stand a better chance of being correct. (thanks to Gerd
4707 * fixed bug in COERCE, which now signals an error on coercing a
4708 rational to a bounded real type which excludes the expected
4710 * The compiler is now able to derive types more accurately from the
4711 COERCE and COMPILE functions.
4712 * fixed bug 223: functional binding is considered to be constant
4713 only for symbols in the CL package.
4714 * fixed bug 231: SETQ did not check the type of a variable being set
4715 (reported by Robert E. Brown)
4716 * A new optimization for MAKE-INSTANCE has been included, fixing
4717 various bugs (including relating to :ALLOCATION :CLASS slots and
4718 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4720 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4721 ** As required by ANSI, LOOP now disallows anonymous collection
4722 clauses such as COLLECT I in conjunction with aggregate boolean
4723 clauses such as THEREIS (= I 1);
4724 ** LOOP now signals an error when any variable is reused in the
4725 same loop (including the potentially useful construct analogous
4726 to WITH A = 1 WITH A = (1+ A);
4727 ** IT is only a special loop symbol within the first clause of a
4728 conditional loop clause;
4729 ** LOOP with a typed iteration variable over a hashtable now
4730 signals a type error iff it should.
4731 * fixed some other bugs revealed by Paul Dietz' test suite:
4732 ** FILE-STREAM now names the class previously known as FD-STREAM;
4733 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4734 argument) no longer signals an error;
4735 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4736 of the slot symbol, rather than using the current package
4737 ((:CONC-NAME "") continues to intern the slot's name in the
4739 * incremented fasl file version number, because of the incompatible
4740 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4741 of the new implementation of DEFINE-COMPILER-MACRO.
4743 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4744 * Support for building SBCL for MIPS platforms running in
4745 little-endian mode has now been checked in, and basic
4746 functionality on said platforms verified.
4747 * minor incompatible change: PCL now records the pathname of a file
4748 in which methods and the like are defined, rather than its
4750 * minor incompatible change: TRUENAME now considers the truename of
4751 a file naming a directory to be the pathname with :DIRECTORY
4752 component indicating that directory.
4753 * minor incompatible change: a NAMED clause in the extended form of
4754 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4755 reason for the previous behaviour is unclear.
4756 * more systematization and improvement of CLOS and MOP conformance
4757 in PCL (thanks to Gerd Moellman and Pierre Mai):
4758 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4760 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4761 primary methods with no specializers;
4762 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4764 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4765 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4766 FORWARD-REFERENCED-CLASSes; error reporting on
4767 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4769 ** SXHASH on CLOS instances now uses a slot internal to the
4770 instance to return different numbers on distinct instances,
4771 while preserving the same return value through invocations of
4773 ** DEFMETHOD signals errors when methods with longer incongruent
4774 lambda lists are added to generic functions;
4775 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4776 CLASS, as specified in AMOP;
4777 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4778 on the order returned by the primary method for classes of
4779 class STANDARD-CLASS;
4780 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4781 * fixed some bugs shown by Paul Dietz' test suite:
4782 ** DOLIST puts its body in TAGBODY;
4783 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4785 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4786 value producing form;
4787 ** if more variables are given to PROGV than values, extra
4788 variables are bound and made to have no value;
4789 ** NSUBSTITUTE on list arguments gets the right answer with
4791 ** ELT signals an error of type TYPE-ERROR when the index argument
4792 is not a valid sequence index;
4793 ** LOOP signals (at macroexpansion time) an error of type
4794 PROGRAM-ERROR when duplicate variable names are found;
4795 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4796 ** FUNCALL of special-operators now cause an error of type
4798 ** PSETQ now works as required in the presence of side-effecting
4799 symbol-macro places;
4800 ** NCONC accepts any object as its last argument;
4801 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4803 ** loop-for-as-package does not require a package to be explicitely
4805 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4807 * fixed bug 166: compiler preserves "there is a way to go"
4808 invariant when deleting code.
4809 * fixed bug 172: macro lambda lists with required arguments after
4810 &REST arguments now cause an error to be signalled. (thanks to
4812 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4813 bug. (thanks to Matthew Danish)
4814 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4816 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4817 arguments are lexically rebound. (thanks to Gerd Moellmann and
4819 * fixed bug 194: error messages are now more informative when there
4820 is no primary method applicable in a call to a generic
4821 function. (thanks to Gerd Moellmann)
4822 * fixed bug in command line argument checking (thanks to Julian
4824 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4825 (thanks to Matthew Danish)
4826 * incremented fasl file version number, because of the
4827 SXHASH-related changes in the layout of CLOS data structures
4829 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4830 * minor incompatible change: The runtime (the Unix executable named
4831 "sbcl") is now much pickier about the .core files it will load.
4832 Essentially it now requires .core files to descend from the same
4833 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4834 as the runtime does. (The intent is to prevent the crashes which
4835 can occur, and which can even be reported as mysterious failures,
4836 when people patch the sources or change the build parameters
4837 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4838 sbcl and .core files.)
4839 * fixed bug: VALUES-LIST is no longer optimized away.
4840 * fixed bug 142: The FFI conversion of C string values to Lisp
4841 string values no longer conses excessively. (thanks to Nathan
4842 Froyd porting Raymond Toy's fix to CMU CL)
4843 * began to systematize and improve MOP conformance in PCL (thanks to
4844 Nathan Froyd, Gerd Moellman and Pierre Mai):
4845 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4847 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4848 ** FINALIZE-INHERITANCE is now called on class finalization;
4849 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4850 argument precedence order.
4851 * fixed bug 202: The compiler no longer fails on functions whose
4852 derived types contradict their declared type.
4853 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4854 so it can be non-toplevel.
4855 * The fasl file version number has changed (because of the new
4856 implementation of DEFMACRO).
4857 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4858 safe code, that any length requirement by their type-specifier
4859 argument is valid. The exceptions to this are described in bug
4861 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4862 functions now check the types of their inputs as required by ANSI.
4863 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4864 introduced symbol is DECLAREd to be SPECIAL.
4865 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4866 * fixed bug: :COUNT argument to sequence functions may be negative
4867 * fixed bug: body of DO-SYMBOLS may contain declarations
4868 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4869 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4870 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4871 symbol macro only once
4872 * fixed printing of call frame when argument list is unavailable
4873 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4874 * compiler no longer signals WARNING on unknown keyword
4877 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4878 * A beta-quality port to the mips architecture running Linux,
4879 based on the old CMUCL backend, has been made. It has been tested
4880 on a big-endian kernel, and works sufficiently well to be able to
4881 rebuild itself; it has not been tested in little-endian mode.
4882 * fixed an inconsistency between gencgc.c and purify.c which made
4883 dumping/loading .core files unreliable
4884 * fixed bug 120a: The compiler now deals correctly with IFs where
4885 the consequent is the same as the alternative, instead of
4886 misderiving the return type. (thanks to Alexey Dejneka)
4887 * fixed bug 113: Logical pathnames are now dumpable (the logical
4888 host is resolved at load-time, throwing an error if it is not
4890 * fixed bug 174: FORMAT's error message is slightly clearer when a
4891 non-printing character is used in a format directive.
4892 * fixed several bugs in compiler checking of type declarations, i.e.
4893 violations of the Python "declarations are assertions" principle
4894 (thanks to Alexey Dejneka)
4895 * fixed several bugs in PCL's error checking (thanks to Gerd
4897 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4899 * fixed bug in compilation of functions as first class values
4900 (thanks to Antonio Martinez-Shotton)
4901 * The compiler's handling TYPE-ERRORs which it can prove will
4902 inevitably happen at runtime has been cleaned up and corrected
4903 in several ways. (thanks to Alexey Dejneka)
4904 * improved argument type checking for various basic arithmetic
4905 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4906 lavished on them in the past that they can be compiled in many
4907 ways in different special cases
4908 * fixed bug 181: compiler checks validity of user supplied type
4910 * cleaned up code flushing in optimization: Function calls which
4911 should signal errors for safety purposes (e.g. which ANSI says
4912 should signal errors when their arguments are of incorrect type)
4913 are no longer optimized away.
4914 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4915 * incremented fasl file version number, because changes in the
4916 implementation of sequence functions like COERCE caused
4917 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4918 in old inline expansions) to become undefined. (Actually these
4919 changes were later undone, so we might very well be binary
4920 compatible with 0.7.7 after all, but leaving the version number
4921 incremented seemed like the simplest and most conservative
4924 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4925 * An alpha-quality port to the parisc architecture running Linux,
4926 based on the old CMUCL backend, has been made. This, even more so
4927 than the other backends, should be considered still a work in
4928 progress; known problems include that the Linux kernel in 64-bit
4929 mode does not propagate the correct sigcontext structure to
4930 userspace, and consequently SBCL on a parisc64 kernel will not
4932 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4933 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4934 suppressed.) Also now that the compiler is looking at declarations
4935 in the environment, it checks optimization declarations as well,
4936 and suppresses inlining when (> DEBUG SPEED).
4937 * More fixes have been made to treatment of floating point exception
4938 treatment and other Unix signals. In particular, floating point
4939 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4940 * The detection and handling of control stack exhaustion (infinite
4941 or very deeply nested recursion) has changed. Stack exhaustion
4942 detection is now done by write-protecting pages at the OS level
4943 and applies at all optimization settings; when found, a
4944 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4945 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4946 be caught using IGNORE-ERRORS.
4947 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4948 correctly when transforming recursive LABELS functions to LETs.
4949 (thanks to Alexey Dejneka)
4950 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4951 that are names of constants or global variables.
4952 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4953 alien routines with docstrings.
4954 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4955 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4957 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4958 (thanks to Eric Marsden)
4959 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4960 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4961 * Bug fix: The SPARC backend can now compile functions involving
4962 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4963 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4964 to a functions expecting a PATHNAME-DESIGNATOR.
4965 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4966 lambda lists. (thanks to Alexey Dejneka)
4967 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4968 functions so that EXPORTing the name of the class doesn't cause
4969 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4970 to Antonio Martinez for reporting this)
4971 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4972 constant-folded without failing an assertion. (thanks to Einar
4973 Floystad Dorum for reporting this)
4974 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4975 types are now dealt with more correctly by the compiler.
4976 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4977 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4978 behaviour analogous to RENAME-FILE. This puts its behaviour more
4979 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4981 * The fasl file version number has changed again. (because of the
4982 bug fix involving the names of PCL MAKE-INSTANCE functions)
4984 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4985 * bug fix: Floating point exceptions are treated much more
4986 consistently on the x86/Linux and PPC/Linux platforms.
4987 * Array initialization with :INITIAL-ELEMENT is now much faster for
4988 cases when the compiler cannot open code the array creation, but
4989 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4990 array accesses have also seen a speed increase.
4991 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4992 specified. (This was at the root of some bad interactions between
4993 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4995 * bug fix: Internal error arguments for undefined functions are now
4996 computed correctly on the PPC/Linux platform.
4997 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4998 Raymond Toy's patch for CMU CL)
4999 * Support for the Solaris 9 operating environment has been included
5000 (thanks to Daniel Merritt)
5001 * A very ugly but hopefully complete draft of the missing FFI chapter
5002 of the manual has been created by reformatting the corresponding
5003 CMU CL manual chapter into (currently very ugly and incoherent)
5004 DocBook and bringing it up to date for SBCL behavior. Thus, the
5005 manual is now essentially complete, at least by my extreme
5006 once-and-only-once standards, whereby it's acceptable to refer to
5007 the doc strings of SB-EXT functions as the primary documentation.
5008 * The fasl file version number has changed again, due to cleanup of
5009 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5010 is no longer a static symbol.)
5012 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5013 * SBCL now builds with OpenMCL (version 0.12) as the
5014 cross-compilation host; also, more progress has been made toward
5015 bootstrapping under CLISP.
5016 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5018 * bug 158 fixed: The compiler can now deal with integer loop
5019 increments different from 1; fixing this turned out also to fix
5021 * bug 169 fixed: no more bogus warnings about using lexical bindings
5022 despite the presence of perfectly good SPECIAL declarations (thanks
5023 to David Lichteblau)
5024 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5025 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5026 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5028 * bug 180 fixed: Method combination specifications no longer ignore
5029 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5030 * bug fix: Structure type predicate functions now check their argument
5031 count as they should.
5032 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5033 correctly. (thanks to Pierre Mai)
5034 * minor incompatible change: The --noprogrammer option is deprecated
5035 in favor of the new --disable-debugger option, which is very similar.
5036 (The major difference is that it takes effect at a slightly different
5037 time at startup, causing handling of errors in --sysinit and
5038 --userinit files will be affected differently.) The
5039 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5040 been added to allow this functionality to be controlled from ordinary
5041 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5042 maintainers, who might want to run non-interactive scripts to
5043 build SBCL cores which will later be used interactively.)
5044 * minor incompatible change: The LOAD function no longer, when given
5045 a wild pathname to load, loads all files matching that pathname.
5046 Instead, an error of type FILE-ERROR is signalled.
5048 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5049 * bug 147 fixed: The compiler preserves its block link/count
5050 invariants more correctly now so that it doesn't crash. (thanks
5052 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5054 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5055 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5056 no-value-for-this-character as NIL (as specified by ANSI).
5057 * HOST-NAMESTRING on physical pathnames now returns a string that is
5058 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5059 (thanks to Christophe Rhodes)
5060 * The Alpha port handles icache flushing more correctly. (thanks to
5062 * More progress has been made toward bootstrapping under CLISP. (thanks
5063 to Christophe Rhodes)
5064 * The fasl file format has changed again, because dynamic loading
5065 on OpenBSD (which has non-ELF object files) motivated some cleanups
5066 in the way that foreign symbols are transformed and passed around.
5067 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5068 is no longer treated as whitespace by the reader, but instead as
5069 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5070 |A
\7fB|, instead of A as it used to.
5072 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5073 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5074 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5075 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5076 this as of 0.7.1.45, but was left out of the previous news section
5077 (thanks to Dan Barlow)
5078 * SBCL now runs on the Solaris operating system on SPARC architectures
5079 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5080 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5081 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5082 * SPARC backend cleanups, allowing builds of cores optimized for V8
5083 and V9 SPARCS, and also emission of code targeted to a particular
5084 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5086 * SBCL is closer to bootstrapping under CLISP, thanks to various
5087 fixes by Christophe Rhodes.
5088 * The fasl file format has changed again, to allow the compiler's
5089 INFO database to support symbol macros.
5090 * The user manual (in doc/) is formatted into HTML more nicely.
5091 (thanks to coreythomas)
5092 * The system is smarter about SUBTYPEP relationships, especially
5093 those involving NOT types (including types such as ATOM which are
5094 represented internally using NOT types). Thus SUBTYPEP is less
5095 likely to return (VALUES NIL NIL) in general, and in particular
5096 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5098 * The fasl file format has changed again, because the internal
5099 representation of types now includes a new slot to support the new
5100 SUBTYPEP-of-NOT-types logic.
5101 * (not a change in the main branch of SBCL, but a related prototype
5102 which can hopefully be merged into the main branch of SBCL in the
5103 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5104 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5105 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5106 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5107 dispatch macro character combinations. (thanks to Alexey Dejneka)
5108 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5109 that superficially look like logical namestrings correctly.
5110 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5112 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5113 default supplied-p) for &optional and &key arguments. (thanks to
5116 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5117 * incompatible change: The compiler is now less aggressive about
5118 tail call optimization, doing it only when (> SPACE DEBUG) or
5119 (> SPEED DEBUG). (This is an incompatible change because there are
5120 programs which relied on the old CMU-CL-style behavior to optimize
5121 away their unbounded recursion which will now die of stack overflow.)
5122 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5123 for non-GENCGC systems has been increased to 20M (since that
5124 seems much closer to the likely performance optimum for modern
5125 systems than the old 4M value was)
5126 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5127 and *DEBUG-PRINT-LEVEL*
5128 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5129 of CMU CL's support for SPARC, and various endianness and other
5130 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5131 * new syntactic sugar for the Unix command line: --load foo.bar is now
5132 an alternate notation for --eval '(load "foo.bar")'.
5134 ** The system now detects stack overflow and handles it gracefully,
5135 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5136 optimization settings. (This is a good thing in general, and
5137 its introduction in this version should be particularly timely
5138 for anyone whose code fails because of suppression of tail
5140 ** The system now hunts for the C variable "environ" in a more
5141 devious way, to avoid segfaults when the C library version differs
5142 between compile time and run time. (thanks to Christophe Rhodes)
5143 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5144 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5145 ** The compiler no longer issues bogus style warnings for undefined
5146 classes in the same source file as the DEFCLASSes which defined
5147 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5149 ** fixes in CONDITION class precedence list for undefined function
5150 errors (thanks to Alexei Dejneka)
5151 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5152 correctly. (thanks to Dan Barlow)
5153 ** portability fixes aiming at bootstrapping under CLISP (thanks
5154 to Dave McDonald and Christophe Rhodes)
5155 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5156 ** fixes in type translation and and type inference (thanks to
5158 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5159 ** various fixes in the new ports (thanks to Dan Barlow)
5160 * several changes related to debugging:
5161 ** suppression of tail recursion, as noted above
5162 ** stack overflow detection, as noted above
5163 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5164 is now the default. (For some time encapsulation has been more
5165 reliable than the breakpoint-based :ENCAPSULATE NIL
5166 implementation, at least on X86 systems; and I just noticed that
5167 encapsulation also seems closer to the spirit of the ANSI
5170 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5172 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5173 up properly again. (There was a packaging bug in 0.7.0 which
5174 left their definitions in SB-SYS::LOAD-FOREIGN and
5175 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5176 vital for most things which interface to C-level interfaces,
5177 like extensions working with sockets or databases or
5178 Perl-compatible regexes or whatever, and the need to fix
5179 this bug is the main reason that 0.7.1 was released so
5181 ** DEFGENERIC is now choosier about the methods it redefines, so that
5182 reLOADing a previously-LOADed file containing DEFGENERICs does
5183 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5184 cycle now works as it should. (thanks to Alexey Dejneka)
5185 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5186 fixed by Christophe Rhodes. (He actually submitted this patch
5187 months ago, and I delayed until after 0.7.0.)
5188 ** Bug 111 (internal compiler confusion about runtime checks on
5189 FUNCTION types) was fixed by Alexey Dejneka.
5190 * Some internal cleanups (getting rid of variables which aren't
5191 needed now that the byte interpreter is gone) caused the fasl
5192 file format number to change again.
5194 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5195 * major incompatible change: The default fasl file extension, i.e. the
5196 default extension for files produced by COMPILE-FILE, has changed
5197 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5199 ** There are many changes in the implementation of the compiler.
5200 SBCL is now essentially a compiler-only implementation of ANSI
5201 Common Lisp. EVAL still "interprets" a few special cases, but
5202 almost all the interesting cases are handled by creating
5203 a LAMBDA expression, calling COMPILE on it, then calling
5204 FUNCALL on the result.
5205 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5206 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5207 Since the code is newer, there might still be some new bugs
5208 (though not as many as before Martin Atzmueller's fixes:-). But
5209 the new code is substantially simpler and clearer, and hopefully
5210 any remaining bugs will be simpler, less fundamental, and more
5211 fixable then the bugs in the old code.
5212 ** The revised compiler is still a little unsteady on its feet.
5214 *** The debugging information it produces (particularly the names
5215 of FUNCTION objects) is sometimes much less useful than what
5216 the old compiler produced.
5217 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5218 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5219 within a MACROLET) has been temporarily weakened.
5220 ** There are new compiler optimizations for various functions:
5221 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5222 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5223 *** the math functions TRUNCATE, FLOOR, and CEILING
5224 *** the function-of-all-trades COERCE
5225 Mostly these should be transparent, but there's one
5226 potentially-annoying problem (bug 117): when the compiler
5227 inline-expands a function and does type analysis on the result,
5228 it can create control paths which have type mismatches, and
5229 when it can't prove that those control paths aren't taken,
5230 it will issue WARNINGs about the type mismatches. This is
5231 a particular problem in practice for the new sequence functions.
5232 It's not clear how this should be fixed, and for now, a
5233 workaround is given in the entry for 117 in the BUGS file.
5234 ** (Because of the interaction between the two previous items --
5235 occasional inlining problems and new inline expansions -- some
5236 of the new sequence function optimizations won't really kick in
5237 completely until debugging information, and then inlining, are
5238 straightened out in some future version.)
5239 * minor incompatible changes:
5240 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5241 DIRECTORY no longer implicitly promotes NIL slots of its
5242 pathname argument to :WILD. In particular, when you ask for the
5243 contents of a directory (which you used to be able to do without
5244 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5245 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5246 ** changes in behavior that ANSI explicitly defines to be
5247 implementation dependent:
5248 *** The new compiler-only implementation still conforms with ANSI,
5249 but acts a little different than before. Besides the obvious
5250 changes in performance tradeoffs (that the cost per form passed
5251 to EVAL has gone up, and the cost per form executed by EVAL
5252 has gone down), the behavior of the system changes a little
5253 because there are no longer any interpreted function objects.
5254 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5255 e.g. doing COMPILE on the output of interactive DEFUN is
5257 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5259 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5260 has changed from (:CL) to NIL.
5261 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5262 e.g. #\Newline and #\Tab, don't have names specified in the
5263 ANSI Common Lisp standard, is now based on their ASCII symbolic
5264 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5265 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5266 are no longer used for output.
5267 ** changes in internal implementation constants:
5268 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5269 4 million. (If your application spends a lot of time GCing and
5270 you have a lot of RAM, you might want to experiment with
5271 increasing it even more.)
5272 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5273 However, almost all old code should still continue to work without
5274 immediate update, as SB-C-CALL is now a (deprecated) nickname
5276 ** Old operator names in the style DEF-FOO are now deprecated in
5277 favor of new corresponding names DEFINE-FOO, for consistency with
5278 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5279 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5280 internal symbols, but a few supported extensions like
5281 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5282 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5283 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5284 etc. as you get deeper into recursive calls to the debugger
5285 command loop, instead of the old "5]", "5]]", "5]]]"
5286 sequence. (I was motivated to do this when squabbles between
5287 ILISP and SBCL left me very deeply nested in the debugger. In the
5288 short term, this change will probably provoke more ILISP/SBCL
5289 squabbles, but hopefully it will be an improvement in the long run.)
5290 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5291 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5292 function, since declaiming return types involving aliens is
5293 (1) annoyingly messy to do by hand and (2) vital to efficient
5294 compilation of code which calls such functions.
5295 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5296 longer reexported by the SB-EXT package. They're solely useful
5297 for alien code, so it seems more logical that you should get
5298 them from the SB-ALIEN package, not in SB-EXT.
5299 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5300 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5301 features. Instead, the code that they used to control is always
5302 built into the system.
5303 * many other bug fixes
5304 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5305 advantage of the new EVAL-WHEN stuff and to clean them up in
5306 general, and they are now more ANSI-compliant in a number of
5307 ways. Martin Atzmueller is responsible for a lot of this.
5308 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5310 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5311 *** correct ERROR type for various file operations
5312 *** some fixes for Lisp streams
5313 *** DEFMETHOD syntax checking
5314 *** changing old weird representation of debug information as
5315 strings (which, among their other deficiencies, don't transform
5316 correctly when you rename packages, and don't change their
5317 print representation when you change things like *PACKAGE*
5318 and *PRINT-LENGTH*) to symbols and lists of symbols
5319 He also made several improvements and fixed several bugs in DESCRIBE.
5320 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5322 *** misbehavior of WRITE-STRING/WRITE-LINE
5323 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5324 and several other LOOP problems as well
5325 *** DIRECTORY when similar filenames are present
5326 *** DEFGENERIC with :METHOD options
5327 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5328 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5329 *** argument ordering in FIND with :TEST option
5330 *** mishandled package designator argument in APROPOS-LIST
5331 *** various problems in the backquote readmacro
5332 *** a bug in APROPOS
5333 *** probably some others that I'm not describing very well here,
5334 since the CVS log documents them by reference to sbcl-devel
5335 messages, and the SourceForge archives aren't working well.:-(
5336 ** Dan Barlow improved the Alpha port (and is making progress on the
5337 PPC port, for those of you who think different).
5338 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5339 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5340 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5341 continues to work on the SPARC port (for those of you in a position
5342 to look down upon our little PC-compatible boxes from a great height).
5343 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5344 and uses that copy, rather than the current dynamic value, when
5345 it's trying to decide whether to truncate output. Thus e.g.
5346 (let ((*print-lines* 50))
5347 (pprint-logical-block (stream nil)
5349 (let ((*print-lines* 8))
5350 (print (aref possiblybigthings i) stream)))))
5351 should now truncate the logical block only at 50 lines, instead of
5352 often truncating it at 8 lines, as it did before.
5353 * The doc/cmucl/ directory, containing old CMU CL documentation
5354 from the time of the fork, is no longer part of the base system.
5355 SourceForge has shut down its anonymous FTP service, and with it
5356 my original plan for distributing the old CMU CL documentation
5357 there. For now, if you need these files you can download an old
5358 SBCL source release and extract them from it.
5359 * The fasl file version number changed again, for dozens of reasons,
5360 some of which are apparent above.
5362 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5363 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5364 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5365 patch, so that DISASSEMBLE output is much nicer.
5366 * The code in the SB-PROFILE package now seems reasonably stable.
5367 I still haven't decided what the final interface should look like
5368 (I'd like PROFILE to interact cleanly with TRACE, since both
5369 facilities use function encapsulation) but if you have a need
5370 for profiling now, you can probably use it successfully with
5371 the current CMU-CL-style interface.
5372 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5373 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5374 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5375 link now returns the dangling link itself, and for similar
5376 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5377 link itself. (In these cases the old code signalled an error and
5378 looped endlessly, respectively.) Thus, DIRECTORY now works even
5379 in the presence of dangling and cyclic symbolic links.
5380 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5381 is now a supported extension again, since the consensus on
5382 sbcl-devel was that it can be useful for ordinary development
5383 work, not just for debugging SBCL itself.
5384 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5385 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5386 that currently-defined functions might be redefined later with
5387 different return types.
5388 * Hash tables can be printed readably, as inspired by CMU CL code
5389 of Eric Marsden and SBCL code of Martin Atzmueller.
5390 * better error handling in CLOS method combination, thanks to
5391 Martin Atzmueller porting Pierre Mai's CMU CL patches
5392 * more overflow fixes for >16Mbyte I/O buffers
5393 * A bug in READ has been fixed, so that now a single Ctrl-D
5394 character suffices to cause end-of-file on character streams.
5395 In particular, now you only need one Ctrl-D at the command
5396 line (not two) to exit SBCL.
5397 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5399 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5400 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5401 does the right thing.
5402 * The implementation of some type tests, especially for CONDITION
5403 types, is now tidier and maybe faster, due to CMU CL code
5404 originally by Douglas Crosher, ported by Martin Atzmueller.
5405 * Some math functions have been fixed, and there are new
5406 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5407 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5408 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5409 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5410 likely to be built into sbcl-0.7.0.)
5411 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5412 CL, ported to SBCL by Martin Atzmueller)
5413 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5414 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5415 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5416 * There's a new slam.sh hack to shorten the edit/compile/debug
5417 cycle for low-level changes to SBCL itself, and a new
5418 :SB-AFTER-XC-CORE target feature to control the generation of
5419 the after-xc.core file needed by slam.sh.
5420 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5421 COMPILE-FILE is no longer supported, so that now every function
5422 gets an entry point, so that block compilation looks a little
5423 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5424 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5425 returns the number of bytes consed since the system started,
5426 rather than the number consed since the first time the function
5427 was called. (The new definition parallels ANSI functions like
5428 CL:GET-INTERNAL-RUN-TIME.)
5429 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5430 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5431 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5432 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5433 * Fasl file version numbers are now independent of the target CPU,
5434 since historically most system changes which required version
5435 number changes have affected all CPUs equally. Similarly,
5436 the byte fasl file version is now equal to the ordinary
5439 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5440 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5441 is no longer recognized. I apologize for this, because it was
5442 listed in SB-EXT as a supported extension, but I found that
5443 its existing behavior was poorly specified, as well as incorrectly
5444 specified, and it looked like too much of a mess to straighten it
5445 out. I have enough on my hands trying to get ANSI stuff to work..
5446 * many patches ported from CMU CL by Martin Atzmueller, with
5447 half a dozen bug fixes in pretty-printing and the debugger, and
5448 half a dozen others elsewhere
5449 * fixed bug 13: Floating point infinities are now supported again.
5450 They might still be a little bit flaky, but thanks to bug reports
5451 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5452 as flaky as they were.
5453 * The --noprogrammer command line option is now supported. (Its
5454 behavior is slightly different in detail from what the old man
5455 page claimed it would do, but it's still appropriate under the
5456 same circumstances that the man page talks about.)
5457 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5458 are now supported, and enabled by default. Thus, the compiler can
5459 handle many floating point and complex operations much less
5460 inefficiently. (Thus e.g. you can implement a complex FFT
5462 * The compiler now detects type mismatches between DECLAIM FTYPE
5463 and DEFUN better, and implements CHECK-TYPE more correctly, and
5464 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5465 thanks to patches from Martin Atzmueller.
5466 * various fixes to make the cross-compiler more portable to
5467 ANSI-conforming-but-different cross-compilation hosts (notably
5468 Lispworks for Windows, following bug reports from Arthur Lemmens)
5469 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5470 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5471 fixed thanks to Pierre Mai's CMU CL patches.
5472 * fixes to keep the system from overflowing internal counters when
5473 it tries to use i/o buffers larger than 16M bytes
5474 * fixed bug 45a: Various internal functions required to support
5475 complex special functions have been merged from CMU CL sources.
5476 (When I was first setting up SBCL, I misunderstood a compile-time
5477 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5478 * improved support for type intersection and union, fixing bug 12
5479 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5480 more obscure bugs as well
5481 * some steps toward byte-compiling non-performance-critical
5482 parts of the system, courtesy of patches from Martin Atzmueller
5483 * Christophe Rhodes has made some debian packages of sbcl at
5484 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5485 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5486 stable, but are nonetheless usable. When he's ready, I'd be happy
5487 to add them to the SourceForge "File Releases" section. (And if
5488 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5489 * new fasl file format version number (because of changes in
5490 internal representation of (OR ..) types to accommodate the new
5491 support for (AND ..) types, among other things)
5493 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5494 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5496 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5498 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5499 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5500 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5501 * DESCRIBE now works on structure objects again.
5502 * Most function call argument type mismatches are now handled as
5503 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5504 know whether the function will be redefined before the call is
5505 executed. (The compiler could flag local calls with full WARNINGs,
5506 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5507 it doesn't keep track of enough information to know whether calls
5508 are local in this sense.)
5509 * Compiler output is now more verbose, with messages truncated
5510 later than before. (There should be some supported way for users
5511 to override the default verbosity, but I haven't decided how to
5512 provide it yet, so this behavior is still controlled by the internal
5513 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5514 src/compiler/ir1util.lisp.)
5515 * Fasl file format version numbers have increased again, because
5516 support for the Gray streams extension changes the layout of the
5517 system's STREAM objects.
5518 * The Gray subclassable streams extension now works, thanks to a
5519 patch from Martin Atzmueller.
5520 * The full LOAD-FOREIGN extension (not just the primitive
5521 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5522 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5523 but like most other programs, it defaults to copying the Unix
5524 environment from the original process instead of starting the
5525 new process in an empty environment.
5526 * Extensions which manipulate the Unix environment now support
5527 an :ENVIRONMENT keyword option which doesn't smash case or
5528 do other bad things. The CMU-CL-style :ENV option is retained
5529 for porting convenience.
5530 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5531 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5533 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5535 * A patch from Martin Atzmueller seems to have solved the SIGINT
5536 problem, and as far as we know, signal-handling now works cleanly.
5537 (If you find any new bugs, please report them!)
5538 * The system no longer defaults Lisp source file names to types
5539 ".l", ".cl", or ".lsp", but only to ".lisp".
5540 * The compiler no longer uses special default file extensions for
5541 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5542 seems to expect a single default extension for all compiled code,
5543 and there's no compelling reason to try to stretch the standard
5544 to allow two different extensions.) Instead, byte-compiled files
5545 default to the same extension as native-compiled files.
5546 * Fasl file format version numbers have increased again, because
5547 a rearrangement of internal implementation packages made some
5548 dumped symbols in old fasl files unreadable in new cores.
5549 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5550 many fewer weird special cases.
5551 * Bug #17 (differing COMPILE-FILE behavior between logical and
5552 physical pathnames) has been fixed, and some related misbehavior too,
5553 thanks to a patch from Martin Atzmueller.
5554 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5555 by Tim Moore, ported to SBCL by Martin Atzmueller.
5556 * Martin Atzmueller fixed several filesystem-related problems,
5557 including bug #36, in part by porting CMU CL patches, which were
5558 written in part by Paul Werkowski.
5559 * More compiler warnings in src/runtime/ are gone, thanks to
5560 more patches from Martin Atzmueller.
5561 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5564 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5566 * DESCRIBE now works on CONDITION objects.
5567 * The debugger now handles errors which arise when trying to print
5568 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5570 * The build system now uses an additional file, customize-target-features.lisp,
5571 to allow local modifications to the target *FEATURES* list. (The point of
5572 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5573 debugging features enabled, without having to worry about propagating it
5574 into everyone's system when I do a "cvs update".) When no
5575 customize-target-features.lisp file exists, the target *FEATURES* list
5576 should be constructed the same way as before.
5577 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5578 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5579 warn about behavior which is undefined under the ANSI spec. Note: This
5580 is specified by ANSI, but it's not very popular with programmers.
5581 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5582 macro in the SBCL sources for an example of a workaround which you
5583 might use to make portable ANSI-standard code which does what you want.
5584 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5585 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5586 when it's used as a non-toplevel form. (This is required in order
5587 to implement the DEFCONSTANT-EQX macro.)
5588 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5589 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5590 funny things, due to bugs in the implementation of EVAL-WHEN
5591 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5592 non-toplevel DEFCONSTANTs are uncommon.)
5593 * The core file version number and fasl file version number have been
5594 incremented, because the old noncompliant DEFCONSTANT behavior involved
5595 calling functions which no longer exist, and because I also took the
5596 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5597 * fixed bug 1 (error handling before read-eval-print loop starts), and
5598 redid debugger restarts and related debugger commands somewhat while
5600 ** The QUIT debugger command is gone, since it did something
5601 rather different than the SB-EXT:QUIT command, and since it never
5602 worked properly outside the main toplevel read/eval/print loop.
5603 Invoking the new TOPLEVEL restart provides the same functionality.
5604 ** The GO debugger command is also gone, since you can just invoke
5605 the CONTINUE restart directly instead.
5606 ** The TOP debugger command is also gone, since it's redundant with the
5607 FRAME 0 command, and since it interfered with abbreviations for the
5609 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5611 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5612 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5613 some porting work by Martin Atzmueller)
5614 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5615 with a boatload of patches which he ported to SBCL. Now that those
5617 ** The system tries to make sure that its low-priority messages
5618 are prefixed by semicolons, to help people who like to use
5619 syntax highlighting in their ILISP buffer. (This patch
5620 was originally due to Raymond Toy.)
5621 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5622 patches originally written by Raymond Toy.
5623 ** The compiler understands coercion between single-value and
5624 multiple-VALUES type expressions better, getting rid of some very
5625 weird behavior, thanks to patches originally by Robert MacLachlan
5626 and Douglas Crosher.
5627 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5628 lambda lists, thanks to a patch originally by Pierre Mai.
5629 ** The system no longer bogusly warns about "abbreviated type
5631 ** The compiler gets less confused by inlining and RETURN-FROM,
5632 thanks to some patches originally by Tim Moore.
5633 ** The system no longer hangs when dumping circular lists to fasl
5634 files, thanks to a patch originally from Douglas Crosher.
5635 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5636 undefined function error.
5637 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5638 in structure slot initforms) for now, documented workaround instead:-|
5639 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5640 * fixed bug 5: added stubs for various Gray stream functions called
5641 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5642 installed, at least appropriate type errors are generated
5643 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5644 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5645 consistently in DEFMETHOD forms.
5646 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5647 it doesn't seem to affect SBCL after all
5648 * The C runtime system now builds with better optimization and many
5649 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5651 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5653 * The system is now under CVS at SourceForge (instead of the
5654 CVS repository on my home machine).
5655 * The new signal handling code has been tweaked to treat register
5656 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5657 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5658 downstream, e.g. in debug-int.lisp, has implicit dependencies
5659 on the unsignedness of integer representation of machine words,
5660 and that caused the system to bomb out with infinite regress
5661 when trying to recover from type errors involving signed values,
5662 e.g. (BUTLAST '(1 2 3) -1).)
5663 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5664 (This was one of the bugs Peter Van Eynde reported back in July.)
5665 * The system now uses code inspired by Colin Walters' O(N)
5666 implementation of MAP (from the cmucl-imp@cons.org mailing
5667 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5668 inline the MAP operation, and there is more than one
5669 sequence argument to the MAP call (so that it can't just
5670 do ETYPECASE once and for all based on the type of the
5671 single sequence argument). (The old non-inline implementation
5672 of the general M-argument sequence-of-length-N case required
5673 O(M*N*N) time when any of the sequence arguments were LISTs.)
5674 * The QUIT :UNIX-CODE keyword argument has been renamed to
5675 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5676 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5678 * Raymond Wiker's patches to port dynamic loading from Linux to
5679 FreeBSD have been added.
5680 * The BUGS file is now more nearly up to date, thanks in large part
5681 to Martin Atzmueller's review of it.
5682 * The debugger now flushes standard output streams before it begins
5683 its output ("debugger invoked" and so forth).
5684 * The core version number and fasl file version number have both
5685 been incremented, because of incompatible changes in the layout
5687 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5688 used to not be called for a saved Lisp image.)
5689 * Martin Atzmueller's version of a patch to fix a compiler crash,
5690 as posted on sbcl-devel 13 September 2000, has been installed.
5691 * Instead of installing Martin Atzmueller's patch for the
5692 compiler transform for SUBSEQ, I deleted the compiler transform,
5693 and transforms for some similar consing operations.
5694 * A bug in signal handling which kept TRACE from working on OpenBSD
5696 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5697 away by constant folding
5698 * The system now defines its address space constants in one place
5699 (in the Lisp sources), and propagates them automatically elsewhere
5700 (through GENESIS and the sbcl.h file). Therefore, patching the
5701 address map is less unnecessarily tedious and error-prone. The
5702 Lisp names of address space constants have also been systematized.
5703 * CVS tags like dollar-Header-dollar have been removed from
5704 the sources, because they have never saved me trouble and
5705 they've been source of trouble working with patches and other
5706 diff-related operations.
5707 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5708 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5710 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5712 * The system has been ported to OpenBSD.
5713 * The system now compiles with a simple "sh make.sh" on the systems
5714 that it's supported on. I.e., now you no longer need to tweak
5715 text in the target-features.lisp-expr and symlinks in src/runtime/
5716 by hand, the make.sh takes care of it for you.
5717 * The system is no longer so grossly inefficient when compiling code
5718 involving vectors implemented as general (not simple) vectors (VECTOR T),
5719 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5720 which dares to use the various sequence functions on non-simple
5721 vectors, takes less of a performance hit.
5722 * There is now a primitive type predicate VECTOR-T-P
5723 to test for the (VECTOR T) type, so that e.g.
5724 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5725 can now be compiled with some semblance of efficiency. (The old code
5726 turned the type declaration into a full call to %TYPEP at runtime!)
5727 * AREF on (VECTOR T) is still not fast, since it's still compiled
5728 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5729 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5730 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5731 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5732 without making full calls to SUBTYPEP at runtime.
5733 (Some analogous efficiency issues for non-simple vectors specialized to
5734 element types other than T, or for non-simple multidimensional arrays,
5735 have not been addressed. They could almost certainly be handled the
5736 same way if anyone is motivated to do so.)
5737 * The changes in array handling break binary compatibility, so
5738 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5739 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5740 instead of (VALUES T T).
5741 * By following the instructions that Dan Barlow posted to sbcl-devel
5742 on 2 July 2000, I was able to enable primitive dynamic object
5743 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5744 functionality is not implemented (since it calls ld to resolve
5745 library references automatically, requiring RUN-PROGRAM for its
5746 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5747 try to resolve library references) is now supported.
5748 * The system now flushes the standard output streams when it terminates,
5749 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5750 them at several other probably-convenient times, e.g. in each pass of
5751 the toplevel read-eval-print loop, and after evaluating a form given
5752 as an "--eval" command-line option. (These changes were motivated by a
5753 discussion of stream flushing issues on cmucl-imp in August 2000.)
5754 * The source transform for TYPEP of array types no longer assumes
5755 that an array whose element type is a not-yet-defined type
5756 is implemented as an array of T, but instead punts, so that the
5757 type will be interpreted at runtime.
5758 * There is now some support for cross-compiling in make.sh: each of
5759 the phases of make.sh has its own script. (This should be transparent
5760 to people doing ordinary, non-cross-compile builds.)
5761 * Since my laptop doesn't have hundreds of megabytes of memory like
5762 my desktop machine, I became more motivated to do some items on
5763 my to-do list in order to reduce the size of the system a little:
5764 ** Arrange for various needed-only-at-cold-init things to be
5765 uninterned after cold init. To support this, those things have
5766 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5767 symbols with such names are now uninterned after cold init).
5768 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5769 fasl files for cold load.
5770 ** Remove the old compiler structure pooling code (which used to
5771 be conditional on the target feature :SB-ALLOC) completely.
5772 ** Redo the representation of some data in cold init to be more compact.
5773 (I also looked into supporting byte compiled code at bootstrap time,
5774 which would probably reduce the size of the system a lot, but that
5775 looked too complicated, so I punted for now.)
5776 * The maximum signal nesting depth in the src/runtime/ support code has
5777 been reduced from 4096 to 256. (I don't know any reason for the very
5778 large old value. If the new smaller value turns out to break something,
5779 I'll probably just bump it back up.)
5780 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5782 * Many, many bugs reported by Peter Van Eynde have been added to
5783 the BUGS list; some have even been fixed.
5784 * While enabling dynamic object file loading, I tried to make the
5785 code easier to understand, renaming various functions and variables
5786 with less ambiguous names, and changing some function calling
5787 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5788 * While trying to figure out how to do the OpenBSD port, I tried to
5789 clean up some of the code in src/runtime/. In particular, I dropped
5790 support for non-POSIX signal handling, added various comments,
5791 tweaked the code to reduce the number of compilation warnings, and
5792 renamed some files to increase consistency.
5793 * To support the new automatic configuration functionality in make.sh,
5794 the source file target-features.lisp-expr has been replaced with the
5795 source file base-target-features.lisp-expr and the machine-generated
5796 file local-target-features.lisp-expr.
5797 * fixed a stupid quoting error in make.sh so that using CMU CL
5798 "lisp -batch" as cross-compilation host works again
5800 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5802 * DESCRIBE no longer tries to call itself recursively to describe
5803 bound/fbound values, so that it no longer fails on symbols which are
5804 bound to themselves (like keywords, T, and NIL).
5805 * DESCRIBE now works on generic functions.
5806 * The printer now prints less-screwed-up representations of closures
5807 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5808 * A private symbol is used instead of the :EMPTY keyword previously
5809 used to mark empty slots in hash tables. Thus
5810 (DEFVAR *HT* (MAKE-HASH-TABLE))
5811 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5812 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5813 now does what ANSI says that it should. (You can still get
5814 similar noncompliant behavior if bang on the hash table
5815 implementation with all the symbols you get back from
5816 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5817 This breaks binary compatibility, since tests for equality to
5818 :EMPTY are wired into things like the macroexpansion of
5819 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5821 * There's now a minimal placeholder implementation for CL:STEP,
5822 as required by ANSI.
5823 * An obscure bug in the interaction of the normal compiler, the byte
5824 compiler, inlining, and structure predicates has been patched
5825 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5826 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5828 * Missing ordinary arguments in a macro call are now detected even
5829 when the macro lambda list contains &KEY or &REST.
5830 * The debugger no longer complains about encountering the top of the
5831 stack when you type "FRAME 0" to explicitly instruct it to go to
5832 the top of the stack. And it now prints the frame you request even
5833 if it's the current frame (instead of saying "You are here.").
5834 * As specified by ANSI, the system now always prints keywords
5835 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5837 * The default initial SIZE of HASH-TABLEs is now smaller.
5838 * Type information from CLOS class dispatch is now propagated
5839 into DEFMETHOD bodies, so that e.g.
5840 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5842 is now basically equivalent to
5843 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5844 (DECLARE (TYPE SINGLE-FLOAT X))
5846 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5847 operation, without having to do run-time type dispatch.
5848 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5849 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5850 * Since I don't seem to be making big file reorganizations very often
5851 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5852 is overflowing my ability to conveniently back them up), I've finally
5853 checked the system into CVS. (The CVS repository is on my home system,
5854 not at SourceForge -- putting it on SourceForge might come later.)
5855 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5856 high-level GC-NOTIFY-FOO functions send their output. (There's
5857 still very little control of where low-level verbose GC functions
5858 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5859 less than it used to -- the GC-NOTIFY-FOO functions are now under
5860 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5861 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5862 in only one place in the source code, and propagates it automatically
5863 everywhere that it's needed. Thus e.g. when I bump the version from
5864 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5865 * The C source files now include boilerplate legalese and documentation
5866 at the head of each file (just as the Lisp source files already did).
5867 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5868 to his page will be replaced with a link to his new CLiki service.
5870 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5872 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5873 * The build process now looks for GNU make under the default name "gmake",
5874 instead of "make" as it used to. If GNU make is not available as "gmake"
5875 on your system, you can change this default behavior by setting the
5876 GNUMAKE environment variable.
5877 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5878 can build without error under CMU CL.
5880 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5882 * There is now a partial SBCL user manual (with some new text and some
5883 text cribbed from the CMU CL manual).
5884 * The beginnings of a profiler have been added (starting with the
5885 CMU CL profiler and simplifying and cleaning up). Eventually the
5886 main interface should be through the TRACE macro, but for now,
5887 it's still accessed through vaguely CMU-CL-style functions and macros
5888 exported from the package SB-PROFILE.
5889 * Some problems left over from porting CMU CL to the new
5890 cross-compilation bootstrap process have been cleaned up:
5891 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5892 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5893 part when getting rid of the compiler *BACKEND* stuff.)
5894 ** The value of *NULL-TYPE* was screwed up, because it was
5895 being initialized before the type system knew the final
5896 definition of the 'NULL type. This screwed up several key
5897 optimizations in the compiler, causing inefficiency in all sorts
5898 of places. (I found it because I wanted to understand why
5899 GET-INTERNAL-RUN-TIME was consing.)
5900 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5901 PROCLAIM FTYPE information. Unfortunately this broke binary
5902 compatibility again, since now the forms output by DEFGENERIC
5903 to refer to functions which didn't exist in 0.6.3.
5904 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5905 can use the new (as of 0.6.3) transform for SOME into MAP into
5907 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5908 values to (INTEGER 0 1000000), so that the time code will no longer
5909 occasionally get blown up by Linux returning 1000000 microseconds
5910 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5911 its output conform to the ANSI spec. (Alas, this makes its output
5912 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5913 * A full call to MAP NIL with a single sequence argument no longer conses.
5914 * fixes to problems pointed out by Martin Atzmueller:
5915 * The manual page no longer talks about multiprocessing as though
5916 it were currently supported.
5917 * The ILISP support patches have been removed from the distribution,
5918 because as of version 5.10.1, ILISP now supports SBCL without us
5919 having to maintain patches.
5920 * added a modified version of Raymond Toy's recent CMU CL patch for
5921 EQUALP comparison of HASH-TABLE
5923 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5925 * The system still can't cross-compile itself with
5926 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5927 entails), but at least it can compile more of itself that way
5928 than it used to be able to, and various buglets which were uncovered
5929 by trying to cross-compile itself that way have now been fixed.
5930 * This release breaks binary compatibility again. This time
5931 at least I've incremented the FASL file format version to 2, so that the
5932 problem can be detected reliably instead of just causing weird errors.
5933 * various new style warnings:
5934 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5935 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5936 ** using the lexical binding of a variable named in the *FOO* style
5937 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5938 as specified by ANSI.
5939 * *RANDOM-STATE* is no longer automatically initialized from
5940 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5941 default behavior of the system is to repeat its behavior every time
5942 it's run. If you'd like to change this behavior, you can always
5943 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5944 old convention there was no comparably easy way to get the system to
5945 repeat its behavior every time it was run.
5946 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5947 FTYPE declarations has been removed, in favor of their ANSI
5948 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5949 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5950 the types of their sequence arguments can be determined at compile time.
5951 This is done through a new open code expansion for MAP which eliminates
5952 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5953 argument types can be determined at compile time.
5954 * The optimizer now transforms COERCE into an identity operation when it
5955 can prove that the coerced object is already of the correct type. (This
5956 can be a win for machine generated code, including the output of other
5957 optimization transforms, such as the MAP transform above.)
5958 * Credit information has been moved from source file headers into CREDITS.
5959 * Source file headers have been made more standard.
5960 * The CASE macro now compiles without complaining even when it has
5963 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5965 * (Note that the way that the PCL macroexpansions were rewritten
5966 to accommodate the change in DEFGENERIC below breaks binary
5967 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5968 not run under sbcl-0.6.2. Once we get out of alpha releases,
5969 i.e. hit release 1.0.0, we'll probably try to maintain binary
5970 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5971 and sbcl-1.4.4. Until then, however, it might be fairly common
5972 for maintenance releases to break binary compatibility.)
5973 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5975 * The reporting of unhandled signals has been changed to print some
5976 explanatory text as well as the report form. (Previously only
5977 the report form was printed.)
5978 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5979 it defines, so that the compiler no longer issues undefined function
5980 warnings for compiled-but-not-yet-loaded generic functions.
5981 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5982 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5983 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5984 section of the ANSI spec are supported.
5985 * The "" nickname for the "KEYWORD" package has been removed.
5986 The reader still handles symbol tokens which begin with a package marker
5987 as keywords, but it doesn't expose its mechanism for doing so in the
5988 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5989 * The system now issues STYLE-WARNINGs for contradictory TYPE
5990 proclamations. (Warnings for contradictory FTYPE proclamations would
5991 be nice too, but those can't be done usefully unless the type system
5992 is made smarter about FUNCTION types.)
5993 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5994 systematized, so that "*target-*.lisp is supposed to exist only on the
5995 target and imply that there's a related file which exists on the
5996 host, and *host-*.lisp is supposed to exist only on the host and imply
5997 that there's a related file which exists on the target. This involves a
5998 lot of renaming. Hopefully the acute confusion caused by the renaming
5999 will be justified by the reduction in chronic confusion..
6000 ** runtime-type.lisp -> early-target-type.lisp
6001 ** target-type.lisp -> late-target-type.lisp
6002 ** early-host-format.lisp -> early-format.lisp
6003 ** late-host-format.lisp -> late-format.lisp
6004 ** host-error.lisp -> misc-error.lisp
6005 ** early-error.lisp -> early-target-error.lisp
6006 ** late-error.lisp -> late-target-error.lisp
6007 ** host-defboot.lisp -> early-defboot.lisp
6008 ** code/misc.lisp -> code/target-misc.lisp
6009 ** code/host-misc.lisp -> code/misc.lisp
6010 ** code/numbers.lisp -> code/target-numbers.lisp
6011 ** code/early-numbers.lisp -> numbers.lisp
6012 ** early-host-type.lisp -> early-type.lisp
6013 ** late-host-type.lisp -> late-type.lisp
6014 ** host-typep.lisp -> typep.lisp
6015 ** load.lisp -> target-load.lisp
6016 ** host-load.lisp -> load.lisp
6017 ** host-disassem.lisp -> disassem.lisp
6018 ** host-insts.lisp -> insts.lisp
6019 ** byte-comp.lisp -> target-byte-comp.lisp
6020 ** host-byte-comp.lisp -> byte-comp.lisp
6021 ** host-signal.lisp -> signal.lisp
6022 ** host-defstruct.lisp -> defstruct.lisp
6023 ** late-target-type.lisp -> deftypes-for-target.lisp
6024 Furthermore, several other previously target-only files foo.lisp (e.g.
6025 hash-table.lisp and random.lisp) have been split into a target-and-host
6026 foo.lisp file and a target-only target-foo.lisp file, with their key type
6027 definitions in the target-and-host part, so that the cross-compiler will
6028 know more about target types.
6029 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6030 gone away. In their place are various *BACKEND-FOO* variables
6031 corresponding to the slots of the old structure.
6032 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6033 into the target SBCL has been fixed.
6034 * The chill.lisp system for loading cold code into a running SBCL
6036 * Support for the CMU CL "scavenger hook" extension has been removed.
6037 (It was undocumented and unused in the CMU CL sources that SBCL was
6038 derived from, and stale in sbcl-0.6.1.)
6039 * Various errors in the cross-compiler type system were detected
6040 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6041 (enabling various consistency checks). Many of them were fixed,
6042 but some hard problems remain, so the compiler is back to
6043 running without *TYPE-SYSTEM-INITIALIZED* for now.
6044 * As part of the cross-compiler type system cleanup, I implemented
6045 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6046 * I have started adding UNCROSS calls throughout the type system
6047 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6048 on cross-compiler input files will be able to go away, and various
6050 * CONSTANTP now returns true for quoted forms (as explicitly required
6053 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6055 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6056 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6057 (MAKE-LIST -1). In the longer term, it ought to become true
6058 that declarations are assertions even at SAFETY 1. For now, it's not
6059 quite true even at SAFETY 3, but it's at least more nearly true..
6060 (Note that this change seems to increases the size of the system by
6061 O(5%) and to decrease the speed of the compiler by 20% or more.)
6062 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6063 for the problem of printing dozens of lines of distracting information
6064 about low-level system machinery as part of the top stack frame
6065 on entry to the debugger when an undefined function was called.
6066 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6067 is not reset to COMMON-LISP-USER.
6068 * Compilation of stuff related to dyncount.lisp has been made conditional
6069 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6070 smaller. The various dyncount-related symbols have been moved into
6071 a new "SB-DYNCOUNT" package.
6072 * tty-inspect.lisp has been renamed to inspect.lisp.
6073 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6074 feature has gone away. (When we eventually port to other flavors of
6075 libc and/or Unix, we'll try to make the differences between flavors
6076 invisible at the user level.)
6077 * Various other *FEATURES* tags, and/or their associated conditionals,
6078 have been removed if obsolescent, or given better documentation, or
6079 sometimes given more-mnemonic names.
6081 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6083 * tidied up "make.sh" script
6084 * tidied up system directory structure
6085 * better "clean.sh" behavior
6086 * added doc/FOR-CMUCL-DEVELOPERS
6087 * many many small tweaks to output format, e.g. removing possibly-confusing
6088 trailing #\. character in DESCRIBE-INSTANCE
6089 * (EQUALP #\A 'A) no longer signals an error.
6090 * new hashing code, including EQUALP hashing
6091 * tidied up Lisp initialization and toplevel
6092 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6093 * command line argument processing
6094 * added POSIX-GETENV function to deal with Unix-ish environment variables
6095 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6096 terminating SBCL on EOF
6097 * non-verbose GC by default
6098 * There is no more "sbcl" shell script; the sbcl file is now the C
6099 runtime executable (just like CMU CL).
6100 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6102 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6103 symbol and package information as Lisp native symbol and package objects
6104 instead of strings naming symbols and strings naming packages. This way,
6105 whenever packages are renamed (as in warm init), debug information is
6106 transformed along with everything else.
6107 * tweaked the optimization policy declarations which control the building
6108 of SBCL itself. Now, among other things, the system no longer saves
6109 source location debugging information. (This helps two problems at once
6110 by reducing SBCL size and by keeping SBCL from trying to look for its
6111 sources -- which may not exist -- when reporting errors.)
6112 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6113 debugging and testing purposes
6114 * cleaned up printing, making the printer call PRINT-OBJECT for
6115 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6116 methods, giving nearly-ANSI behavior
6117 * converted almost all special variables to use *FOO* naming convention
6118 * deleted PARSE-TIME functionality, since it can be done portably
6119 * moved some files out of cold init into warm init
6120 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6122 * regularized formatting of source files
6123 * added an install.sh script
6124 * fixed ridiculous memory usage of cross-compiler by making
6125 compiler/alloc.lisp not try to do pooling unless it can hook
6126 itself into the GC of the cross-compilation host. Now the system
6127 builds nicely on my old laptop.
6128 * added :SB-ALLOC in target-features.lisp-expr
6129 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6130 was not implemented)
6131 * re-did condition handling and note reporting in the compiler. Notes
6132 are no longer handled by signalling conditions. Style warnings
6133 and warnings are handled more correctly and reported in such a way
6134 that it's easy to find one or the other in your output (so that you
6135 can e.g. figure out which of many problems caused COMPILE-FILE to
6137 * changed the severity of several compiler warnings from full WARNING
6138 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6139 compiler note reporting so that it doesn't use the condition system
6140 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6141 COMPILE-FILE command)
6142 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6143 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6144 no longer supported, since their implementation was deeply intertwingled
6145 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6146 * removed bogus "support" for compiler macros named (SETF FOO), and
6147 removed the compiler macro for SETF INFO (but only after making a fool
6148 of myself on the cmucl-imp mailing list by posting a bogus patch for
6149 DEFINE-COMPILER-MACRO..)
6150 * Compiled files containing forms which have side effects on the Lisp
6151 reader (such as DEFPACKAGE forms) are now handled more correctly.
6152 (Compiler queuing of top level lambdas has been suppressed by setting
6153 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6154 * deleted various currently-unused source files, e.g. gengc.lisp. They
6155 may be added back at some point e.g. when porting to other architectures,
6156 but until they are it's distracting to distribute them and to try to
6158 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6159 there were so many of them they're just distractions, and UNCROSS is
6160 known to be able to handle the current sources
6161 * moved PROFILE functionality into TRACE, so that it will be clear
6162 how the wrapping and unwrapping of functions when you profile them
6163 interacts with the wrapping and unwrapping of functions when you
6164 trace them. (Actually, the functionality isn't there yet, but at least
6165 the interface specification is there. Hopefully, the functionality will
6166 arrive with some future maintenance release.)
6167 * removed host-oops.lisp
6168 * changed signature of QUIT function to allow UNIX-CODE argument
6169 * fixed READ-SEQUENCE bug
6170 * tweaked verbose GC output so that it looks more like the progress
6171 output that ANSI specifies for functions like LOAD
6172 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6173 * added <http://sbcl.sourceforge.com> to the banner information printed by