1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.50:
3 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
4 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
5 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
6 instructions. (lp#814688)
7 * bug fix: COERCE to unfinalized extended sequence classes now works.
8 (reported by Jan Moringen; lp#815155)
9 * bug fix: a compiler error during typecheck generation, reported by Eric
11 * bug fix: obsolete instance protocol fires when shared slots are added
13 * bug fix: fixed-format floating point printing with scaling factors.
16 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
17 * enhancement: errors from FD handlers now provide a restart to remove
18 the offending handler.
19 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
21 * enhancement: location of user or system initialization file can now easily
22 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
23 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
24 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
25 the thunk, as a keyword argument, :arguments.
26 * enhancement: constraint propagation is simplified (and sped up) when
27 COMPILATION-SPEED > SPEED.
28 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
29 * enhancement: debugger understands &MORE arguments better.
30 * optimization: extracting bits of a single-float on x86-64 has been
31 optimized. (lp#555201)
32 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
34 * optimization: local call trampolines (x86 and x86-64) are emitted
36 * optimization: implicit value cells for dynamic-extent closed-over bindings
37 on x86 and x86-64 can hold unboxed values as well.
38 * meta-optimization: improved compilation speed, especially for large
39 functions. (lp#792363 and lp#394206)
40 * bug fix: bound derivation for floating point operations is now more
41 careful about rounding possibly closing open bounds. (lp#793771)
42 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
43 backwards incompatible change in 1.0.48.27)
44 * bug fix: occasional debugger errors in when a type-error occured in a
45 function with dynamic-extent &rest list.
46 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
47 boa-construtors can be used to initialized structure slots.
48 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
49 (lp#795705, regression)
50 * bug fix: DIRECTORY works better on logical pathnames.
51 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
52 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
53 * bug fix: the compiler no longer constant-folds NaNs in
54 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
55 * bug fix: FORMAT now handles floating point rounding correct, eg.
56 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
58 * bug fix: style warning during lambda-list introspection of generic
59 functions with both optional and key argments.
60 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
62 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
65 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
66 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
67 interrupts for its body.
68 * enhancement: source locations are now available for files loaded as
69 source, compile-time-too evaluation, and initialization files.
70 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
71 virtual source-file information, eg. overriding input-file of COMPILE-FILE
72 when a temporary file is used for compilation.
73 * enhancement: ASDF has been updated to version 2.015.3.
74 * enhancement: backtraces involving frames from the default evaluator are
76 * enhancement: RUN-PROGRAM works with user-defined binary input and output
78 * enhancement: more informative compile-time warnings and runtime errors for
79 type-errors detected at compile-time.
80 * enhancement: deadlock detection for mutexes and spinlocks.
81 * enhancement: dynamic-extent for &rest lists stack allocate only their
82 spines, not their argumets. While portable code should not rely on this,
83 particularly in combination with inlining, it should make dynamic-extent
85 * enhancement: SB-POSIX improvements:
86 ** WNOHANG and WUNTRACED are exported.
87 ** SYSCALL-ERROR now also provides the name of the failing system call.
88 * enhancement: --script improvements:
89 ** errors on standard input, output, and error streams are handled and
90 cause scripts to exit silently, making them easier to use in shell
92 ** backtraces from scripts now go to standard error instead of the
93 terminal even if one is available.
94 ** --script can be an argument, causing the script to be loaded from
96 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
97 strings to foreign memory.
98 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
99 a file, making it easier to understand heap dynamics.
100 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
101 allows the compiler to automatically elide rest-list allocation so long as
102 the call sites are in functions that the compiler knows cannot escape.
104 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
105 especially in safe code when none of the required arguments have changed
107 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
108 uninterruptible, as well as blocking reads from socket streams created
109 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
110 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
111 from the to-char if the from-char is not a dispatch-macro character.
112 * bug fix: references to undefined variables in function calls that are
113 optimized away now signal a runtime error. (lp#722734)
114 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
115 types from a function defined in the same file. (regression from
117 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
119 * bug fix: spurious errors during QUIT when standard streams were closed.
121 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
122 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
123 years, is now no longer supported.
124 * enhancement: read() and write() have been added to SB-POSIX.
125 * enhancement: types of DEFSTRUCT constructors are proclaimed more
126 accurately, allowing better typechecking of call-sites.
127 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
128 are no longer caught. (reverted to pre 1.0.34 behaviour)
129 * optimization: slightly faster ISQRT. (lp#713343)
130 * bug fix: better support for Solaris /bin/sh in sh-based tests.
131 * bug fix: TRACE behaves better when attempting to trace undefined
132 functions. (lp#740717)
133 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
134 to (FUNCALL #'(LAMBDA ...) ...).
135 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
136 a compile-time error. (lp#720382)
137 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
139 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
140 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
141 optimization. (regression from 1.0.45.18/1.0.46.15)
142 * bug fix: package locks did not protects against compile-time side-effects
143 of DEFUN. (lp#675584)
144 * bug fix: --dynamic-space-size argument is validated more carefully.
146 * bug fix: memory fault from printing a malformed simple-condition.
148 * bug fix: redefining classes so that slot-definition classes change now
149 engages the obsolete instance protocol. (lp#766271)
150 * bug fix: constant improper lists could break source coverage recording.
152 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
155 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
156 * bug fix: fix mach port rights leaks in mach exception handling code on
157 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
159 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
160 * enhancement: redefinition warnings for macros from different files. (lp#434657)
161 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
162 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
163 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
164 processed using EVAL -- now the appropriate toplevel form is reported instead.
165 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
166 declarations. (lp#726331)
167 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
168 that NIL/NULL is excluded from the type.
169 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
171 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
173 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
174 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
175 stack-allocated values out of their dynamic-extent. (lp#310175)
176 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
177 x86-64 builds caused a type-error.
178 * bug fix: calling COMPILE with something else than a lambda-expression as the
179 second argument reports a more sensible error. (lp#718905)
180 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
181 are detected. (lp#520607)
182 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
184 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
185 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
186 methods. (regression from 1.0.45.18)
187 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
188 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
189 * bug fix: several foreign functions accepting string also accepted NIL and
190 consequently caused a memory fault at 0 now signal a type-error instead.
192 * bug fix: under rare circumstances, constraint propagation could rewrite a
193 variable reference to refer to a variable not in scope, causing an error
194 during physical environment analysis when attempting to close over the
195 variable. (lp#551227)
196 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
198 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
199 * enhancement: largefile support on Solaris.
200 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
201 arguments (lp#710017)
202 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
203 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
205 * optimization: ERROR and CERROR are approximately 5 times faster.
206 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
207 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
208 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
209 up instance creation in those cases.
210 * optimization: arithmetic operations with multiple constant arguments in now
211 have them reduced at compile-time. (lp#676414)
212 * optimization: determining current character position on string-streams for
213 pretty-printing was overly slow.
214 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
215 lifetime analysis to overwrite closed-over variables (lp#681092).
216 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
217 were not handled correctly (lp#713063).
218 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
220 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
221 mistake. (lp#667297).
222 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
223 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
224 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
225 unintern the wrong symbol with the same name. (lp#693796)
226 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
227 making it possible to restore the initial table if it has been messed up.
230 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
231 * enhancement: ~/ and ~user/ are treated specially in pathnames.
232 Refer to documentation for details.
233 * enhancement: ASDF has been updated to version 2.010.
234 * optimization: mutated closed-over variables that are only accessed by
235 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
236 declared to be DYNAMIC-EXTENT) are stored directly in their containing
237 stack frame, rather than allocating a VALUE-CELL (lp#586103).
238 * optimization: UNWIND-PROTECT cleanup functions are now declared
240 * bug fix: backtracing function with &REST arguments now shows the full
241 argument list. (lp#310173)
242 * bug fix: return types for functions with complex lambda-lists are now
243 derived properly (lp#384892)
244 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
245 long string arguments slowed the compiler down to a crawl.
246 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
247 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
248 in the DEFMETHOD body.
249 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
250 messages, being instead replaced with the corresponding function name.
251 * bug fix: don't derive overly complex unions of numeric types for arithmetic
252 operators. (lp#309448)
254 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
255 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
256 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
257 * enhancement: ALLOCATION-INFORMATION also provides the page the object
259 * enhancement: default dynamic-space size can be configured at build-time
260 without touching source, using the --dynamic-space-size argument to make.sh.
261 * enhancement: DESCRIBE recognizes symbols naming optimization policy
262 qualities, and mentions ALWAYS-BOUND declarations.
263 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
265 * enhancement: ASDF has been updated to 2.009.
266 * enhancement: the system detects known type-erros in calls better,
267 signalling a full warning about violated proclaimed FTYPEs and violations
268 of derived FTYPEs within the same file, including self-calls.
269 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
270 * optimization: constant-folding exploits numeric and character types, in
271 addition member types.
272 * optimization: numeric, character and member types that are inhabited by
273 exactly one value are tested with EQL.
274 * optimization: more conditional branches are eliminated during IR1.
275 Branches are simplified before performing if/if-conversion, and simple
276 equivalent branches (that only read the same constant or variable) are
278 * improvements to the Windows port:
279 ** change: canonical unparsing form for pathname namestrings now uses / as
280 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
281 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
282 on Windows. (thanks to Kalyanov Dmitry)
283 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
285 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
286 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
287 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
288 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
290 * bug fix: interrupts arriving during CL:OPEN caused an error.
291 * bug fix: overeager character buffering could cause input to block
292 spuriously when reading from a pipe (lp#643686)
293 * bug fix: more efficient timer expiry should avoid starvation on systems
294 where number of SIGALRMs per second is restricted. (lp#375515)
295 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
296 * bug fix: compile-times no longer scale linearly with the size of
297 quoted lists in source-code. (lp#654289)
298 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
299 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
300 so badly. (lp#654485)
301 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
302 an error for eg. STRUCTURE. (lp#458015)
303 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
304 (lp#613871, thanks to Roman Marynchak)
305 * bug fix: more reliable &REST list type derivation. (lp#655203)
306 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
307 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
308 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
309 also declared NOTINLINE. (lp#655581)
310 * bug fix: the compiler could attempt to emit constant left shifts of
311 greater value than n-word-bits. (lp#309063)
312 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
313 type information for the function being set. (lp#659220)
314 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
315 containing self-calls were recompiled with a new signature, and failed
316 to warn when a self-call using the old signature was left in. (lp#655126)
317 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
318 :DEFAULT when the default external had character size other than 8 bits.
320 * bug fix: derived types of functions in the same file were implicitly
321 trusted, leading to potential heap corruption when those function were
322 defined incompatibly. (lp#657499)
323 * bug fix: existing ASDF source registries are ignored when building
325 * bug fix: short-form DEFSETF checks that the second argument is a symbol
326 (lp#655824, thanks to Roman Marynchak)
327 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
328 package-lock violation was detected. (lp#660752)
329 * bug fix: the system can store different docstrings for a single function
330 under different names. (lp#661631, regression from 1.0.29.24)
331 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
332 properly. (lp#384801)
333 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
334 of specified length could confuse the type derivation in unsafe code.
336 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
337 fork with multiple Lisp threads running is made on every platform,
338 not just Darwin. (lp#451111)
339 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
340 around when core was saved, which could cause undefined behaviour when the
342 * bug fix: Allow UNTRACE of functions that are no longer defined
343 (lp#667657, thanks to Attila Lendvai)
344 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
345 compile-time warning (lp#664373, thanks to Stas Boukarev)
347 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
348 * incompatible change: FD-STREAMS no longer participate in the serve-event
349 event-loop by default. (lp#316072)
350 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
351 affects streams from CL:OPEN.
352 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
353 default, but this is liable to change: applications needing serve-event
354 for socket streams should explicitly request it using :SERVE-EVENTS T
356 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
358 * enhancement: CLOS effective method functions and defclass slot typechecking
359 function now have debug names for use in backtraces and profiles.
360 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
362 * enhancement: symbols are printed using fully qualified names in several
363 error and warning messages which are often associated with package
364 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
365 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
366 thanks to Andrew Golding)
367 * bug fix: reading /proc files on Linux works. (lp#425199)
368 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
370 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
371 breaking code that tried to write the value of a printer control variable.
372 (lp#581564, thanks to Stas Boukarev)
373 * bug fix: WRITE compiler macro did not handle output stream designators
374 correctly. (lp#598374, thanks to Stas Boukarev)
375 * bug fix: better availability of names of foreign functions in backtraces
376 on Linux. (lp#626962, thanks to Stas Boukarev)
377 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
378 lp#627581, thanks to Josh Elsasser and Jim Wise)
379 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
380 thanks to Josh Elsasser)
381 * bug fix: using aliases for builtin classes as defmethod specializers
382 without adding DEFTYPEs for them works. (lp#618387)
383 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
385 * bug fix: legally dynamic-extent lists and vectors used as
386 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
387 * bug fix: inline-expansion creating references to dead lambda-variables
388 (lp#454681, thanks to Alexey Dejneka)
389 * bug fix: better error message for bogus numerical arguments to RANDOM.
390 (lp#598986, thanks to Stas Boukarev)
391 * bug fix: the compiler occasionally inlined references from incompatible
392 environments occurs. (lp#308951)
393 * bug fix: the compiler threw an error when trying to compile a local
394 function (labels or flet) known to take a specialized complex argument.
395 (not in launchpad, reported by sykopomp in #lispgames)
396 * bug fix: package-locks failed to protect against compile-time effects of
397 DEFUN when the symbol previously had a macro definition. (lp#576637)
398 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
399 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
400 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
401 * bug fix: evaluation in debugger REPL works using the global context when
402 in frames that do not have sufficient debug information.
403 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
405 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
407 * bug fix: interrupt taking longer than the requested period caused SLEEP
408 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
410 changes in sbcl-1.0.42 relative to sbcl-1.0.41
412 ** Cross-compilation host is now specified to make.sh using
413 command-line argument --xc-host=<command> instead of a positional
414 argument. (thanks to Daniel Herring)
415 ** Install location can be specified to make.sh using command-line
416 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
417 * optimization: The default implementation of
418 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
419 * enhancement: Explicit memory barrier operations are now available for use
420 by multithreaded code. See documentation for details.
421 * enhancement: Experimental support for threading on Linux/PPC.
422 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
423 * bug fix: EXPT signals an error if first argument is a zero and second
424 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
425 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
426 (lp#576594, thanks to Roman Marynchak)
427 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
428 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
430 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
431 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
432 cached, leading to many fewer expensive calls to
433 COMPUTE-APPLICABLE-METHODS.
434 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
435 CLASS argument, search for and call an appropriate optimized ctor function
437 * bug fix: WRITE always returns the correct value.
439 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
440 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
441 * bug fix: Name conflicts between symbols passed as arguments to a single
442 call to IMPORT no longer add multiple symbols with the same name to the
443 package (detectable via DO-SYMBOLS).
444 * bug fix: support building without the dlshim on darwin x86 and x86-64
446 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
448 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
449 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
451 * bug fix: linkage-table entries on PPC now no longer overflow their
452 space allocation (potentially causing crashes if they are written out
454 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
455 platforms, preventing the GC from seeing stale pointers on the control
456 stack in subsequent GCs (which would, and does, break invariants).
457 * bug fix: 32-bit unicode external formats now work on big-endian systems.
458 * bug fix: Literal characters with code points greater than about 32767
459 now work on PPC UNICODE builds.
460 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
461 high order bits are explicitly cleared out. In some contrived situations,
462 this could lead to wrong results in mixed real/complex float arithmetic.
463 * bug fix: Fix function/macro redefinition warnings when building with
464 clisp. (lp#576787, thanks to Josh Elsasser)
465 * new platform: experimental support for ppc/openbsd (thanks to Josh
467 * bug fix: Floating-point traps now work on ppc/linux.
469 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
470 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
471 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
472 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
473 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
474 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
475 SB-THREAD:GRAB-MUTEX.
476 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
477 contain additional data structures and tools for concurrent programming;
478 at the moment it contains a lock-free queue, and a lock-free mailbox
480 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
481 GET-MUTEX but takes &key rather than &optional parameters. Also added
482 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
484 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
485 SB-THREAD:WAIT-ON-SEMAPHORE.
486 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
488 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
489 conditions to defer the deadline for forever.
490 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
492 * enhancement: errors from NO-APPLICABLE-METHOD and
493 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
494 generic function call.
495 * enhancement: SB-BSD-SOCKET improvements
496 ** sockets and socket streams now have a more informative printed
497 representation based on the corresponding SOCKET-NAME and
499 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
501 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
502 CL:CLOSE when appropriate, and no longer disassociates the stream
503 from the socket if close failed. (lp#543951)
504 * improvements to the instrumenting profiler
505 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
506 ** optimization: counters no longer use locks for the overflow mode.
507 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
508 incurred an off-by-one miscount.
509 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
510 * enhancement: improved DEFMETHOD pretty-printing.
511 * enhancement: perform range reduction when arguments are too large for
512 x87's transcendentals (instead of returning 0). (lp#327192)
513 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
514 some of CL-PPCRE's macros. (lp#570079)
515 * enhancement: our machine code is slightly less hostile to valgrind on
517 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
518 to Robert Swindells and Aleksej Saushev)
519 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
520 * bug fix: a rare case of startup-time page table corruption.
521 * bug fix: a semaphore with multiple waiters and some of them unwinding due
522 to timeouts could be left in an inconsistent state.
523 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
524 * bug fix: misoptimization of multiplication by one in
525 (SB-C::FLOAT-ACCURACY 0) policies.
526 * bug fix: miscounts in SB-PROFILE.
527 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
528 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
529 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
530 up itself" (March 2010) for further details.
531 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
532 against length of the list if the element is found before the specified
533 END is reached. (thanks to Alec Berryman, lp#554385)
534 * bug fix: errors signalled during package graph modification no longer
535 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
536 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
537 :SB-DOC feature. (lp#552564)
538 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
539 * bug fix: more robust runtime executable path detection. (lp#375549)
540 * bug fix: GCD always returns positive values. (lp#413680)
541 * bug fix: Converting division to multiplication by reciprocal handles
543 * bug fix: We were too eager in eliding range reduction tests on x87.
544 The maximal magnitude is 2^63, not 2^64.
545 * bug fix: Transforms for TRUNCATE don't die when the result is completely
547 * bug fix: Maybe restore buildability on Alpha.
548 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
550 * bug fix: RANDOM-STATE can be printed readably again.
551 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
552 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
553 types) could result in type mismatches during compilation.
555 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
556 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
557 stack frame thrown from.
558 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
559 compiler optimization qualities inside dynamic extent of its body.
560 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
561 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
563 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
564 constraint propgation, allowing better compilation eg. when used to
565 access structures with WITH-SLOTS. (lp#520366)
566 * optimization: the compiler is now more aware of the type of the underlying
567 storage vector for multidimensional simple arrays resulting in better code
568 for accessing such arrays.
569 * optimization: passing NIL as the environment argument to TYPEP no longer
570 inhibits optimizing it. (lp#309788)
571 * optimization: more efficient register usage when handling single-float
572 arguments on x86-64. (thanks to Lutz Euler)
573 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
574 pre-allocated temporary vectors. (lp#496249)
575 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
576 in :INITIAL-CONTENTS. (lp#523612)
577 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
578 functions. (lp#524707)
579 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
580 WITH-SLOTS usages during compilation.
581 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
582 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
583 all x86oid platforms with :UD2-BREAKPOINTS target feature.
584 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
585 instruction (tested on x86oid linux with ud2-breakpoints).
586 * bug fix: slam.sh now works on win32.
587 * bug fix: better differences of numeric types. (lp#309124)
588 * bug fix: arrays declared intersection and union types can have their
589 upgraded element type derived. (lp#316078)
590 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
591 threads started during profiling. (lp#472499)
592 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
594 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
595 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
596 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
597 values instead of signaling an error. (lp#309093)
598 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
600 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
601 declarations (lp#497321)
602 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
603 and failed to detect circular lists (lp#452008)
604 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
606 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
607 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
608 due to it, so that handlers can run.
609 * bug fix: reparsing undefined types if they have become defined since
611 * bug fix: missing &REST type in a proclamation for a function with both
612 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
613 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
614 expanded calls (lp#542174)
615 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
616 than just at toplevel form.
618 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
619 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
620 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
621 but work on type specifiers.
622 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
623 to name a type specifier.
624 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
625 specifier is valid where "valid" basically means "would be accepted as
626 second argument of TYPEP".
627 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
628 returns the function's declared, or derived FTYPE.
629 * new feature: SB-POSIX now supports accessing the d_ino member of
630 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
631 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
632 provide for seeding a RANDOM-STATE object with user-provided data or
633 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
634 attempt to initialize the returned state from the operating system's
635 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
636 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
637 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
638 * bug fix: Fix grammar and style issues for the docstrings of
639 printer-related variables and functions. (Thanks to mon_key; launchpad
641 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
643 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
644 in a row even though a handler defered the deadline long into the
646 * bug fix: A deadline handler was run without interrupts enabled for a
647 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
648 in infinitely spinning, non-killable threads.
649 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
650 before reaching the erring stack frame.
651 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
652 real power. (launchpad bug lp#525949)
653 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
654 GENCGC platforms. (launchpad bug lp#529014)
655 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
656 (launchpad bug lp#525916)
657 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
658 (Thanks to Robert Goldman)
660 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
661 * optimization: ROUND with a single single-float or double-float argument
662 is properly inlined when possible.
663 * optimization: Slightly better code is generated for integer<->float
664 conversions and for single-float<->double-float conversions on x86-64.
665 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
666 code for 32-bit and 64-bit rotations on x86-64.
667 * bug fix: The install script changes the ownership of directories as well
668 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
669 launchpad bug lp#508485)
670 * bug fix: TRUNCATE with a single single-float or double-float argument is
671 properly inlined when possible. (launchpad bug lp#489388)
672 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
673 no longer causes a compiler error on x86 and ppc.
674 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
675 always relative to *READTABLE* rather than the passed argument.
677 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
678 * minor incompatible change: threading support is now enabled by default
680 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
682 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
683 are now caught and reported just like errors during macroexpansion.
684 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
685 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
686 * enhancement: ASDF systems can now depends on SB-QUEUE.
687 * fixes and improvements related to Unicode and external formats:
688 ** bug fix: error handling and restart usage in the ucs-2 external format
690 ** there is now an implementation of the ucs-4 external format.
691 ** the utf-16 and utf-32 external formats are supported.
692 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
693 in the environment. setenv() and unsetenv() are also provided. (reported by
694 Fare Rideau; launchpad bug lp#460455)
695 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
696 loading. This ensures sensible errors for .FASL files from other
697 implementations on case-insensitive filesystems. (reported by Willem
698 Broekema; launchpad bug lp#489417)
699 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
700 Willem Broekema; launchpad bug lp#489698).
701 * bug fix: some minor code rearrangements to reenable warning-free building
702 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
703 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
705 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
708 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
709 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
710 * improvement: support O_LARGEFILE access to files larger than 2GB on
711 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
712 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
713 definitions for methods specializing on the passed class itself.
714 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
715 definitions for methods specializing on the passed class itself, or on
717 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
718 about itself during the build (e.g. for M-? in Slime), if this flag is
719 enabled in customize-target-features.lisp. This will increase the core
720 size by about 5-6mb, though, so it's mostly interesting to SBCL
722 * new feature: various GENCGC tuning parameters have been experimentally
723 documented and exported from SB-EXT. See documentation for details.
724 * fixes and improvements related to Unicode and external formats:
725 ** the Unicode character database has been upgraded to the
726 Unicode 5.2 standard, giving names and properties to a number of new
727 characters, and providing a few extra characters with case
729 ** improvement: restarts for providing replacement input/output on coding
730 errors for fd-stream external formats.
731 ** improvement: where :<encoding> is a keyword corresponding to an
732 external format the system supports, it is now possible to specify
733 (:<encoding> :replacement <character>) as an external format which will
734 automatically substitute <character> on encoding or decoding errors for
735 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
737 ** improvement: the file streams underlying the standard streams (such as
738 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
739 which uses the replacement mechanism to handle encoding errors,
740 preventing various infinite error chains and unrecoverable I/O
742 ** minor incompatible change: the utf-8 external format now correctly
743 refuses to encode Lisp characters in the surrogate range (char-codes
744 between #xd800 and #xdfff).
745 ** fix a typo preventing conversion of strings into octet vectors
746 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
748 ** fix a bug in the octet multibyte handling of decoding errors and the
749 USE-VALUE restart. (launchpad bug lp#314939)
750 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
751 restart on fd-stream decoding errors.
752 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
753 error is near the end of file.
754 ** fix a double-error case in unibyte octet conversions, when the first
755 use of USE-VALUE is ignored.
756 ** fix bugs in handling of undefined code points in unibyte encodings.
757 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
758 streams after an UNREAD-CHAR.
759 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
760 object is allocated in a boxed region of dynamic space.
761 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
762 fork with multiple Lisp threads running is made, instead of going
763 ahead with unpredictable consequences. (reported by Leslie Polzer)
764 * bug fix: uses of slot accessors on specialized method parameters within
765 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
766 error while finalizing the class. This fix may cause classes with slot
767 accessors to be finalized later than previously. (reported by Lars Rune
768 Nøstdal; launchpad bug lp#473699)
769 * bug fix: restore buildability on the MIPS platform. (regression from
770 1.0.30.38, reported by Samium Gromoff)
771 * bug fix: inspecting closures is less likely to fail with a type error.
772 * bug fix: no timer starvation when setting the system clock back.
773 (launchpad bug lp#460283)
774 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
775 standard pprint dispatch table as specified by CLHS.
776 * bug fix: give CLISP a hint about a type declaration to enable it to build
777 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
779 * bug fix: correctly dump literal objects in defaulting forms of arglists.
780 (reported by Attila Lendvai; launchpad bug lp#310132)
781 * bug fix: distinguish in type specifiers between arrays that might be
782 complex and arrays that are definitely complex. (launchpad bug lp#309129)
783 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
784 type. (reported by Levente Mészáros; launchpad bug lp#485972)
785 * bug fix: setting the value of a symbol-macro within a method in the
786 presence of type declarations works properly again. (reported by Iban
787 Hatchondo; launchpad bug lp#485019)
789 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
790 * optimization: faster FIND and POSITION on strings of unknown element type
791 in high SPEED policies. (thanks to Karol Swietlicki)
792 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
794 * improvement: better error signalling for bogus parameter specializer names
795 in DEFMETHOD forms (reported by Pluijzer)
796 * bug fix: DELETE-FILE once again works on logical pathnames (regression
798 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
800 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
801 removes previous default initargs (reported by Lars Rune Nøstdal and
803 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
804 lambda-lists. (reported by Peter Seibel)
805 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
806 correctly when starting from an executable core without saved runtime
807 options (reported by Faré Rideau, thanks to Zach Beane)
808 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
809 an optimization note instead. (reported by Martin Cracauer)
810 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
811 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
812 new process group if it doesn't need to share stdin with the sbcl
813 process. (thanks to Leslie Polzer)
814 * bug fix: SATISFIES could be misoptimized to refer to a local function.
815 (reported by Stanislaw Halik)
817 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
818 * improvement: stack allocation is should now be possible in all nested
819 inlining cases: failure to stack allocate when equivalent code is manually
820 open coded is now considered a bug.
821 * improvements related to Unicode:
822 ** the Unicode character database has been upgraded to the
823 Unicode 5.1 standard, giving names and properties to a number of new
824 characters, and providing a few extra characters with case
826 ** the system now recognizes and produces names for Unicode Hangul
828 ** the EBCDIC-US external-format is now supported for octet operations
829 (as well as for stream operations).
830 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
831 be used to output toplevel compile-time effects into a separate .CFASL
833 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
834 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
836 * optimization: TRUNCATE on known single- and double-floats is upto 25%
838 * optimization: division of floating point numbers by constants uses
839 multiplication by reciprocal when an exact reciprocal exists.
840 * optimization: multiplication of single- and double-floats floats by
841 constant two has been optimized.
842 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
843 sufficient type information is available. (thanks to Leslie Polzer)
844 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
845 known structure objects are as efficient as defstruct generated accessors.
846 * optimization: unused vector creation can now be optimized away.
847 * improvement: ASDF systems can now depends on SB-INTROSPECT.
848 * improvement: a STYLE-WARNING is signalled when a generic function
849 clobbers an earlier FTYPE proclamation.
850 * improvement: the compiler is able to track the effective type of
851 generic function across method addition and removal even in the
852 absence of an explicit DEFGENERIC.
853 * improvement: DESCRIBE now reports on symbols naming undefined
854 but assumed or declared function as well.
855 * improvement: recompilation of systems using SB-GROVEL now works
856 (thanks to Leslie Polzer)
857 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
858 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
860 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
861 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
862 well as user defined declaration names.
863 ** VARIABLE-INFORMATION is now aware of alien variables.
864 * improvement: improved address space layout on OpenBSD (thanks to Josh
866 * improvement: pretty-printing of various Lisp forms has been improved
867 (thanks to Tobias Rittweiler)
868 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
869 unused were deleted in safe code. (reported by John Fremlin)
870 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
872 * bug fix: some out-of-line array predicates were missing (reported by
874 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
876 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
877 (thanks to Larry D'Anna)
878 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
879 as well. (reported by Josh Elsasser)
880 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
881 leading to possible attempts to delete the same file twice. See docstring
882 on DELETE-FILE for details. (reported by John Fremlin)
883 * bug fix: DELETE-FILE once again deletes the file named by the pathname
884 designator argument, rather than its truename. (reported by Luis
886 * bug fix: the low-level debugger had 32-bit assumptions and was missing
887 information about some array types. (thanks to Luis Oliveira)
888 * bug fix: moderately complex combinations of inline expansions could
889 be miscompiled if the result was declared to be dynamic extent.
890 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
891 form (+ <variable> <integer>) were miscompiled under certain
893 * bug fix: in some cases no compiler note about failure to stack allocate
894 was emitted, even if the objects were in fact heap allocated.
895 * bug fix: minor violation of "otherwise inaccessible" rule for stack
896 allocation could cause objects users might reasonably expect to
897 be heap allocated to be stack allocated.
898 * bug fix: DESCRIBE signalled an error for generic functions under
899 certain circumstances. (thanks to Leslie Polzer)
900 * bug fix: Fixed spelling of an error message.
902 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
903 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
904 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
905 of SB-THREAD:THREAD-ERROR-THREAD.
906 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
907 * new feature: docstrings for local and anonymous functions are no longer
908 discarded. (thanks to Leslie Polzer)
909 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
910 values in other threads.
911 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
912 about object allocation.
913 * optimization: division of a real float by a complex float is implemented
914 with a specialised code sequence.
915 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
916 keywords is an order of magnitude faster.
917 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
918 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
919 methods, and similarly for non-standard metaclass classes as long as there
920 are no methods additional on MAKE-INSTANCE.
921 * optimization: more efficient type-checks for FIXNUMs when the value
922 is known to be a signed word on x86 and x86-64.
923 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
924 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
926 * optimization: compiler is smarter about delegating argument type checks to
928 * optimization: several character functions are now compiled somewhat more
929 efficiently. (reported by Lynn Quam)
930 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
931 * improvement: less unsafe constant folding in floating point arithmetic,
932 especially for mixed complex/real -float operations.
933 * optimization: constant double and single floats are stored in native
934 unboxed format on x86[-64].
935 * optimization: smarter code for arithmetic operations with constant floats,
936 complex floats, or integers on x86[-64].
937 * optimization: smarter code for conjugate/multiplication of float complexes
938 and abs/negate of floats on x86-64.
939 * optimization: more efficient complex float and real float operations on
941 * improvement: complex float division is slightly more stable.
942 * improvement: DESCRIBE output has been reworked to be easier to read and
943 contains more pertinent information.
944 * improvement: failure to provide requested stack allocation compiler notes
945 provided in all cases (requested stack allocation not happening without a
946 note being issued is now considered a bug.)
947 * bug fix: SB-POSIX exports the documented types and functions
948 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
949 types. (reported by "abhi")
950 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
951 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
952 (thanks to Paul Khuong)
953 * bug fix: looping around HANDLER-CASE could silently consume stack space
954 on each iteration. (reported by "foobar")
955 * bug fix: better error signalling when calls to functions seeking elements
956 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
957 (reported by Tobias Rittweiler)
958 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
959 directory components now works as it used to. (various prolems reported by
960 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
961 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
962 (reported by Elliot Slaughter, thanks to Stas Boukarev)
963 * bug fix: bogus undefined variable warnings from fopcompiled references to
964 global variables. (thanks to Lars Rune Nøstdal)
965 * bug fix: foreign function names should now appear in backtraces on
966 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
967 * bug fix: SETF compiler macro documentation strings are not discarded
969 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
970 (thanks to Alex Plotnick)
971 * bug fix: SLEEP accepts large integer arguments, truncating them to
972 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
973 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
974 * bug fix: compiler notes for expensive slot type checks could be emitted
975 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
977 changes in sbcl-1.0.29 relative to 1.0.28:
978 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
979 https://bugs.launchpad.net/sbcl
980 Bugs can be reported directly there, or by sending email to
981 sbcl-bugs@lists.sourceforge.net
982 (no subscription required.)
983 * minor incompatible change: under weak type checking policy integer
984 types are weakened less aggressively.
985 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
986 allowed to return, which causes SBCL to quit with exit status 0. Previously
987 if the function returned with a small integer return value, that value
988 was accidentally reused as the exit status.
989 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
990 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
991 :HASH-FUNCTION argument. Refer to user manual for details.
992 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
994 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
995 microseconds since the Unix epoch on all platforms.
996 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
997 allows the compiler to safely elide boundedness checks for special
999 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1000 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1001 efficiency measure for threaded platforms, but also valueable in
1003 * new feature: UNC pathnames are now understood by the system on Windows.
1004 * optimization: the compiler uses a specialized version of FILL when the
1005 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1007 * optimization: accesses to potentially non-simple arrays where element type
1008 is known are 50% faster.
1009 * optimization: compiler now generates faster array typechecking code.
1010 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1012 * optimization: multidimensional array accesses in the absence of type
1013 information regarding array rank are approximately 10% faster due to
1014 open coding of ARRAY-RANK.
1015 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1016 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1018 * optimization: result of call to VECTOR can now be stack allocated.
1019 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1020 as long as the resulting array is one-dimensional and has a known
1021 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1022 length of the list matches the known length of the vector does not
1023 allocate the list as an intermediate step. Ditto for VECTOR and simple
1025 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1026 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1027 known element type, and is known to be simple and one dimensional.
1028 * improvement: SBCL now emits a compiler note where stack allocation was
1029 requested but could not be provided (not in all cases, unfortunately)
1030 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1031 * improvement: pretty-printing loop has been implemented properly. (thanks
1032 to Tobias Rittweiler)
1033 * documentation: CLOS slot typechecing policy has been documented.
1034 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1035 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1036 pointer, leading to memory faults. (thanks to Bart Botta)
1037 * bug fix: better floating point exception handling on x86/OpenBSD.
1038 (thanks to Josh Elsasser)
1039 * bug fix: exit status from QUIT when called under --script was lost
1040 (reported by Hubert Kauker)
1041 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1042 same implementation of FILL to initialize the array, even if a more
1043 efficient one was available (reported by Stas Boukarev, thanks to
1045 * bug fix: potential miscompilation of array stack allocation on x86 and
1046 x86-64. (reported by Time Tossavainen)
1047 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1048 result in their subforms being treated as top level forms. (reported by
1050 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1051 than a machine register could leave garbage in the high bits of the
1052 result register (bug 316325).
1053 * bug fix: disable address space randomization Linux/x86-64 as well,
1054 not just x86-64. (reported by Ken Olum)
1055 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1056 generate incorrect code.
1057 * bug fix: #201; type inference for CONS and ARRAY types could derive
1058 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1059 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1060 could not be assigned to or bound with PROGV. (reported by Lorenz
1062 * bug fix: the value of CL:- in the inspector was the previous expression
1063 evaluated rather than the expression being evaluated.
1064 * bug fix: constants can no longer be locally declared special.
1065 * bug fix: signals delivered to threads started from foreign land (read:
1066 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1067 thread by blocking all signals and resignalling.
1068 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1069 from :INITFORM, if any.
1071 changes in sbcl-1.0.28 relative to 1.0.27:
1072 * a number of bugs in cross-compilation have been fixed, with the ultimate
1073 result that building under (at least) clisp should be much more reliable.
1074 * minor incompatible changes: echo-streams now propagate unread-char to the
1075 underlying input stream, and no longer permit unreading more than one
1077 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1078 frames, allowing for instance more reliable backtraces.
1079 * improvement: the debugger REPL can now reference lexical variables
1080 by name directly for code compiled with (DEBUG 3).
1081 * improvement: errors from malformed declarations now have better source
1082 paths associated with them. (thanks to Tobias Rittweiler)
1083 * optimization: faster local calls on x86/x86-64
1084 * bug fix: some error messages for out-of-bound array indexes confused the
1085 index and the bound. (thanks to Stas Boukarev)
1086 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1088 * bug fix: running regressions tests in shells without OSTYPE set now works.
1089 (reported by Harald Hanche-Olsen)
1090 * bug fix: more robust static space exhaustion signalling from
1091 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1092 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1093 docstring away instead of storing it under names such as (LAMBDA (X)).
1094 (reported by Leslie Polzer)
1095 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1096 (thanks to Ole Arndt for the patch)
1097 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1098 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1099 potentially-invalid effective methods in its cache.
1100 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1101 instances as well (thanks to Paul Khuong)
1102 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1103 SB-POSIX:WAITPID and their C equivalents.
1104 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1106 changes in sbcl-1.0.27 relative to 1.0.26:
1107 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1108 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1109 * improvement: the system either recovers from stack exhaustion or dies
1110 properly as opposed to leaving the user uncertain of whether the handler
1111 trampled on some random memory next to the stack or having to rely on
1112 --lose-on-corruption (which is still a good idea to use in production
1113 because stack exhaustion can happen in signal handlers which will likely
1115 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1116 1.0.25.37, reported by Harald Hanche-Olsen)
1117 * bug fix: work around signal delivery bug in darwin (regression from
1118 1.0.25.44, reported by Sidney Markowitz)
1119 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1121 changes in sbcl-1.0.26 relative to 1.0.25:
1122 * incompatible change: an interruption (be it a function passed to
1123 INTERRUPT-THREAD or a timer function) runs in an environment where
1124 interrupts can be enabled. The interruption can use
1125 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1126 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1127 potentially running out of stack. Keep in mind that in the absence
1128 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1129 acquiring a lock can enable interrupts.
1130 * incompatible change: GC-OFF and GC-ON are removed, as they were
1131 always unsafe. Use WITHOUT-GCING instead.
1132 * new feature: runtime option --disable-ldb
1133 * new feature: runtime option --lose-on-corruption to die at the
1134 slightest hint of possibly non-recoverable errors: running out of
1135 memory, stack, alien stack, binding stack, encountering a memory
1136 fault, etc. In the absence of --lose-on-corruption a warning is
1138 * enhancement: detect binding stack exhaustion
1139 * enhancement: detect alien stack exhaustion on x86/x86-64
1140 * improvement: generally more stable and reliable interrupt handling
1141 * improvement: there is a per thread interruption queue,
1142 interruptions are executed in order of arrival
1143 * improvement: a repeating timer reschedules itself when the it has
1144 finished, but expiration times are spaced equally. If an
1145 expiration time is in the past it will trigger after a short grace
1146 period that may give a chance to other things to run.
1147 * optimization: slightly faster gc on multithreaded builds
1148 * optimization: faster WITHOUT-GCING
1149 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1150 important locks so that the debugger/handler doesn't produce
1151 recursive errors or deadlock.
1152 * bug fix: real-time signals are not used anymore, so no more
1153 hanging when the system wide real-time signal queue gets full.
1154 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1156 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1157 * bug fix: fix random memory faults related to interrupts on alpha
1158 * bug fix: fix random memory faults related to interrupts on sparc
1159 * bug fix: fix deadlocks related to starting threads
1160 * bug fix: fix deadlines on locks on futex platforms
1161 * bug fix: restore errno in signal handlers
1162 * bug fix: fix deadlocks related to hash tables
1163 * bug fix: fix deadlocks in pcl
1165 changes in sbcl-1.0.25 relative to 1.0.24:
1166 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1167 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1168 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1169 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1170 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1171 better name and does not return values so stale on multiprocessor systems.
1172 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1174 * improvement: unithread builds keep track of MUTEX-VALUE.
1175 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1176 stream anymore making it thread safe to have a concurrent reader and
1177 a writer, for instance, in a pipe.
1178 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1179 arguments, making compiler-macros for SETF-functions able to inspect
1180 their constant arguments.
1181 * improvement: COMPILE-FILE reports times with millisecond accuracy
1182 (thanks to Luis Oliveira)
1183 * optimization: CHAR-CODE type derivation has been improved, making
1184 TYPEP elimination on subtypes of CHARACTER work better. (reported
1185 by Tobias Rittweiler, patch by Paul Khuong)
1186 * bug fix: setting alien structure fields of type struct by value now
1187 computes the right offset for the memory copy.
1188 * bug fix: compilation problem involving inlined calls to aliens with
1189 result type VOID. (reported by Ken Olum)
1190 * bug fix: #235a; sequential inline expasion in different policies no
1191 longer reuses the functional from the previous expansion site.
1192 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1193 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1194 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1195 cause an implied type redefinition. Regression from 1.0.21.29.
1196 * bug fix: sign-extension of small signed return values now works with C
1197 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1198 * improvements to the Windows port:
1199 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1200 Westfold, thanks to Rudi Schlatte)
1202 changes in sbcl-1.0.24 relative to 1.0.23:
1203 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1204 vector of a multidimensional SIMPLE-ARRAY.
1205 * new feature: the system now signals a continuable error if standard
1206 readtable modification is attempted. (thanks to Tobias Rittweiler)
1207 * new feature: DIRECTORY has been extended with a non-standard keyword
1208 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1209 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1210 has been robustified and documented better. (thanks to Robert Goldman)
1211 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1212 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1213 * tradeoff: constant FORMAT control strings are now compiled unless
1214 SPACE > SPEED (previously only when SPEED > SPACE.)
1215 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1217 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1219 * bug fix: lexical type declarations are now correctly reported by
1220 SB-CLTL2. (reported by Larry D'Anna)
1221 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1222 using UTF-8 as external format. (thanks to Luis Oliveira)
1223 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1224 are signalled correctly. (thanks to Stas Boukarev)
1225 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1226 designator. (thanks to Tobias Rittweiler)
1227 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1228 designator, and returns T instead of the function. (thanks to
1230 * bug fix: direct superclasses of STANDARD-CLASS and
1231 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1232 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1233 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1234 when no class with the named slot yet exists no longer causes a
1235 compile-time style-warning.
1236 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1237 in safe code. (reported by Didier Verna)
1238 * bug fix: #430; nested structure constructors can stack allocate.
1239 * bug fix: on some 64-bit platforms dynamic space size was truncated
1240 to #xffff0000 bytes. (reported by Benjamin Lambert)
1241 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1242 REPL unusable. (reported by Daniel Herring)
1243 * bug fix: return values of READ-SEQUENCE did not take :START into
1244 account on file streams, regressions since 1.0.12.22. (reported by
1245 Thomas Russ, patch by Paul Khuong)
1246 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1247 method specializer used to confuse permuation vector optimization.
1248 * bug fix: system inserted bogus implicit type declarations for local
1249 special variables in DEFMETHOD bodies.
1250 * bug fix: #354; duplicated frames in backtraces due to
1251 non-tail-call-optimized XEPs to functions with return type NIL
1253 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1254 initializes structure object slots according to DEFSTRUCT initforms,
1255 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1256 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1257 (reported by Bruno Haible and Stephen Wilson)
1258 * bug fix: #395; fill-pointer output streams used now support
1259 element-type BASE-CHAR as well.
1260 * bug fix: compiler error when attempting to derive return value of
1261 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1263 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1265 * bug fix: Mac OS X binaries should now be portable between Leopard
1268 changes in sbcl-1.0.23 relative to 1.0.22:
1269 * enhancement: when disassembling method functions, disassembly
1270 for the associated fast function is also produced.
1271 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1273 * optimization: printing with *PRINT-PRETTY* true is now more
1274 efficient as long as the object being printed doesn't require
1275 special handling by the pretty printer.
1276 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1277 now interact correctly with type declarations.
1278 * partial bug fix: PCL detects infinite recursion during wrapper
1279 validation. (thanks to Attila Lendvai)
1280 * bug fix: #426; nested function calls are inlined properly.
1281 Previously if FOO was an inline function, in calls of the form
1282 (FOO (FOO ...)) the outer call was not inlined.
1283 * bug fix: long long arguments passed in registers to alien
1284 functions on PowerPC Linux and NetBSD are now handled correctly
1285 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1287 changes in sbcl-1.0.22 relative to 1.0.21:
1288 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1289 for the shared object in the current directory, but passes the native
1290 namestring of the designated pathname to the operation system's shared
1291 object loading function as-it.
1292 * minor incompatible change: --disable-debugger toplevel option now takes
1293 effect before processing of initialization files and --eval or --load
1295 * new feature: new commandline argument: --script, which supports
1296 shebang lines. See documentation for details. (based on work by
1298 * new feature: SAVE-LISP-AND-DIE can save current values of
1299 --dynamic-space-size and --control-stack-size in the executable core,
1300 causing it to skip normal runtime option processing. See documentation
1301 for details. (thanks to Zach Beane)
1302 * enhancement: inoccous calls to EVAL or generic functions dispatching
1303 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1304 * enhancement: the system no longer resignals errors from --load and
1305 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1306 associated with the original error to be lost. (thanks to Ariel
1308 * enhancement: :DONT-SAVE keyword argument has been added to
1309 LOAD-SHARED-OBJECT for controlling interaction with
1310 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1311 the effects of an earlier LOAD-SHARED-OBJECT call.
1312 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1313 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1314 provided. (reported by Cedric St-Jean)
1315 * bug fix: circularity handling in the reader did not treat raw
1316 structure slots correctly. (reported by Cedric St-Jean)
1317 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1318 file descriptors when there were none.
1319 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1320 was broken. (reporteed by Willem Broekema)
1321 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1322 pathnames without a directory.
1323 * bug fix: COMPILE-FILE did not warn about undefined variable
1324 references at toplevel, and LOAD of the resulting fasl did
1325 not signal an error.
1326 * bug fix: functions with non-required arguments used to end up with
1327 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1328 * bug fix: redefining a function with non-required arguments didn't
1329 update the system's knowledge about its call signature properly.
1330 * bug fix: fixed #431; incompatible alien record type redefinitions
1331 are detected and handled. (reported by Neil Haven)
1332 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1333 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1335 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1336 after alien stack frames.
1337 * bug fix: strings passed to mk{s,d}temp lacked null termination
1339 changes in sbcl-1.0.21 relative to 1.0.20:
1340 * new feature: the compiler is able to track the effective type of a
1341 generic function across method addition and removal.
1342 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1343 appropriately typed structure slots without locking.
1344 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1345 information like those gathered by TIME using a programming-friendly
1347 * new feature: TIME reports time taken even if the form performs a
1348 non-local transfer of control.
1349 * enhancement: reduced conservativism on GENCGC platforms: on
1350 average 45% less pages pinned (measured from SBCL self build).
1351 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1352 mutate constant symbols or violate declaimed type of the symbol.
1353 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1354 sleeping on the semaphore in heavily contested semaphores.
1355 * bug fix: semaphores and condition variables were not interrupt
1357 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1358 owned by other threads anymore.
1359 * bug fix: FIND on lists called KEY outside the specified
1360 subsequence. (reported by budden)
1361 * bug fix: LOG doesn't use single-float intermediate results when
1362 given mixed integer and double-float arguments, leading to better
1363 precision. (reported by Bob Felts)
1364 * bug fix: LOG with base zero returned values of inconsistent type.
1366 changes in sbcl-1.0.20 relative to 1.0.19:
1367 * minor incompatible change: OPTIMIZE qualities
1368 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1369 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1370 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1371 * documentation: some slot access efficiency guidelines have been
1372 added to the user manual.
1373 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1374 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1375 as ASSOC and MEMEBER.
1376 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1377 to more efficient EQ-comparison versions more often.
1378 * optimization: enhanced derivation of DOLIST iteration variable type
1380 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1382 * optimization: runtime lookup of function definitions can be
1383 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1384 * optimization: compiler is able to derive the return type of
1385 (AREF (THE STRING X) Y) as being CHARACTER.
1386 * optimization: CLRHASH on empty hash-tables no longer does pointless
1387 work. (thanks to Alec Berryman)
1388 * optimization: REPLACE deftransforms don't punt when :START1 or
1390 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1391 no longer emits a code deletion note. (reported by Andrew
1393 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1394 functions with an odd number of &OPTIONAL arguments, a &REST
1395 argument, and one or more &KEY arguments at the call site.
1396 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1397 arguments appeared at call sites as well.
1398 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1399 READ-LINE &co can no longer read from them afterwards. (reported
1401 * bug fix: fixed #427: unused local aliens no longer cause compiler
1402 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1404 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1405 alien-stack leakage. (reported by Andy Hefner)
1406 * bug fix: PROGV signals an error when an attempt to violate declared
1407 type of a variable or bind a constant is made.
1408 * bug fix: SET signals an error when an attempt to violate declared
1409 type of a variable is made.
1410 * bug fix: restart computation during the execution of a restart
1411 test function no longer causes infinite recursion. (reported by
1413 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1414 signals an error. (thanks to Pierre Mai)
1415 * bug fix: EXPORT left symbol unexported in conflict situations.
1416 (thanks to Michael Weber)
1417 * bug fix: correctly handle name conflicts involving CL:NIL.
1418 (thanks to Michael Weber)
1419 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1420 conflicts arising from USEing package with conflicting symbols
1421 correctly. (thanks to Michael Weber)
1423 changes in sbcl-1.0.19 relative to 1.0.18:
1424 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1425 warnings that go otherwise unhandled will be muffled if they are
1426 of the type that's the value of this variable.
1427 * optimization: stack allocation is slightly more efficient on x86
1429 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1430 where a raw slot always is initialized using the initform whose
1431 type is not know sufficiently well a compile-time are now compiled
1432 correctly. (reported by John Morrison)
1433 * bug fix: compiler no longer makes erronous assumptions in the
1434 presence of non-foldable SATISFIES types.
1435 * bug fix: stack analysis missed cleanups of dynamic-extent
1436 arguments in non-let-converted calls to local functions.
1437 * improvements to the Windows port:
1438 ** adjusted address spaces for building on both Win32 and
1439 Win64. (thanks for John Connors)
1440 * fixed some bugs revealed by Paul Dietz' test suite:
1441 ** interval arithmetic during type derivation used inexact integer
1442 to single-float coercions.
1443 ** arithmetic operations involving large integers and single
1444 floats give the same results in compiled and interpreted code.
1445 ** deriving the result type of COERCE no longer signals an error
1446 if the derived type of the second argument is a MEMBER type
1447 containing invalid type specifiers.
1448 ** ADJOIN with constant NIL as second argument works correctly.
1449 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1451 changes in sbcl-1.0.18 relative to 1.0.17:
1452 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1453 profiles only the current thread.
1454 * minor incompatible change: changes to SYMBOL-VALUE of constants
1455 defined with DEFCONSTANT now signal an error.
1456 * enhancement: SB-SPROF now has support for wallclock profiling,
1457 and is also able to profile specific threads. REPORT output
1458 has also additional sorting options.
1459 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1461 * optimization: structure allocation has been improved
1462 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1463 ** out of line constructors are ~10% faster.
1464 ** inline constructors are ~15% faster.
1465 ** inline constructors are capable of dynamic extent allocation
1466 (generally on x86 and x86-64, in some cases on other platforms
1468 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1470 * optimization: file compiler is now able to coalesce non-circular
1471 lists, non-base strings, and bit-vectors. Additionally, constants
1472 are never referenced through SYMBOL-VALUE at runtime.
1473 * optimization: code defining methods on PRINT-OBJECT (and other
1474 generic functions in the COMMON-LISP package) now loads faster.
1475 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1477 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1478 fasl is now deleted. (reported by Attila Lendvai)
1479 * bug fix: READ-LINE always returned NIL for the last line in files.
1480 (reported by Yoshinori Tahara)
1481 * bug fix: more accurate disassembly annotations of foreign function
1482 calls. (thanks to Andy Hefner)
1483 * bug fix: trimming non-simple strings and non-string string
1484 designators when the there is nothing to trim works properly.
1485 (thanks to James Knight)
1486 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1487 (thanks to Travis Cross)
1488 * fixed some bugs revealed by Paul Dietz' test suite:
1489 ** NIL is a valid function name (regression at 1.0.13.38)
1490 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1491 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1492 fill pointers properly (regression at 1.0.12.23)
1493 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1494 displacement indices properly (regression at 1.0.12.23)
1496 changes in sbcl-1.0.17 relative to 1.0.16:
1497 * temporary regression: user code can no longer allocate closure
1498 variable storage on stack, due to bug 419 without explicitly
1499 requesting it. Please consult sbcl-devel for advice if you need to
1500 use this feature in the meanwhile.
1501 * new feature: runtime argument --control-stack-size can be used to
1502 adjust thread default control stack size.
1503 * enhancement: improved TIME output
1504 ** all times are reported using the measured accuracy (milliseconds
1505 for real and GC times, microseconds for everything else.)
1506 ** processor cycle counts on x86 and x86-64.
1507 ** interpreted forms are counted for both evaluator modes.
1508 ** number of lambdas converted by the compiler is reported.
1509 ** CPU percentage report (computed from real and total run time.)
1510 ** more comprehensive run time reporting, using a condenced format
1511 ** interperted form, lambda, and page fault counts are omitted
1513 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1515 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1516 * optimization: two argument forms of LAST are upto ~10% faster
1517 in normal SPEED policies.
1518 * optimization: NCONC no longer needs to heap cons its &REST list
1519 in normal SPEED policies.
1520 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1521 to Sidney Markowitz)
1522 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1523 regression since 1.0.9.1. (thanks to Eric Marsden)
1524 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1525 since 1.0.15.36. (thanks to Paul Khuong)
1526 * bug fix: LAST when always returned the whole list when given a bignum
1527 as the second argument.
1528 * bug fix: dynamic extent allocation of nested lists and vectors
1529 could leak to otherwise accessible parts.
1530 * bug fix: invalid optimization of heap-allocated alien variable
1532 * bug fix: fasl header checking is less vulnerable to different
1533 platform word lengths.
1534 * bug fix: more correct assembler syntax for GNU binutils
1535 2.18.50.0.4 support. (thanks to Marijn Schouten)
1536 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1538 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1539 declarations) successfully. (reported by Attila Lendvai)
1541 changes in sbcl-1.0.16 relative to 1.0.15:
1542 * minor incompatible change: revert the changes to sb-posix's error
1543 signaling added in 1.0.14.
1544 * minor incompatible change: change PROBE-FILE back to returning
1545 NIL whenever we can't get a truename, as was the case before 1.0.14.
1546 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1547 inherits from ERROR instead of just CONDITION.
1548 * new feature: SB-INTROSPECT can provide source locations for instances
1549 as well. (thanks to Tobias Rittweiler)
1550 * optimization: binding special variables now generates smaller code
1551 on threaded platforms.
1552 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1553 and cases where no :TEST is given but the compiler can infer that
1554 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1555 * optimization: better LOGNOT on fixnums.
1556 * optimization: modular arithmetic for a particular requested width
1557 is implemented using a tagged representation unless a better
1558 representation is available.
1559 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1560 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1561 for wellformedness and returns a specialized vector. (reported by
1562 Francois-Rene Rideau)
1563 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1564 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1565 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1566 unscheduling timer at the same time as another timer fires.
1567 * bug fix: don't reschedule timers for dead threads.
1568 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1569 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1570 bogus errors if select() was interrupted.
1571 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1573 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1574 * enhancement: cleaner backtraces for interactive interrupts, as
1575 well as other cases where the interesting frames used to be
1576 obscured by interrupt handling frames.
1577 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1578 now supported, and tracing a whole package using (TRACE "FOO") now
1579 traces SETF-functions as well.
1580 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1581 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1582 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1583 * unreadably printed representation of hash-tables now includes
1585 * bug fix: partially fixed #188: type propagation from assignments
1586 is now more efficient.
1587 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1588 'DOUBLE-FLOAT) are not flushable.
1589 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1590 full address of the object, and none of the tag bits.
1591 * bug fix: readably printing hash-tables now respects other printer
1592 control variables. (reported by Cedric St-Jean)
1593 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1594 keyword with MAKE-HASH-TABLE.
1595 * bug fix: export SB-POSIX:MKSTEMP.
1596 * bug fix: SORT was not interrupt safe.
1597 * bug fix: XREF accounts for the last node of each basic-block as
1599 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1600 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1601 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1602 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1603 create obsolete instances in the case of redefinition or
1604 obsoletion of a superclass. (thanks to Andy Hefner)
1605 * bug fix: Support for the Alpha architecture has been revived; it had
1606 suffered somewhat from lack of maintenance since sbcl-1.0.
1607 * improvements to the Windows port:
1608 ** The system detects the codepage to use at startup, instead of
1609 using the value from the saved core. (thanks to Kei Suzuki)
1611 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1612 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1613 (see documentation for details.)
1614 * revived support for OpenBSD (contributed by Josh Elsasser)
1615 * partially fixed bug #108: ROOM no longer suffers from occasional
1616 (AVER (SAP= CURRENT END)) failures.
1617 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1618 bodies no longer cause a WARNING to be signalled. (reported by
1620 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1621 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1622 the bug in TRUNCATE.) (reported by Michael Weber)
1623 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1624 no samples. (reported by Andy Hefner)
1625 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1626 no longer appear as (NIL ...) frames in backtraces.
1627 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1628 is now actually exported from SB-EXT as documented. (reported by
1630 * bug fix: sb-aclrepl now correctly understands how to inspect
1631 single-floats on 64-bit platforms where single-floats are not boxed.
1632 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1633 yet been finalized. (reported by Levente Meszaros)
1634 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1635 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1636 SBCL-specific optimize qualities.
1638 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1639 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1640 an executable in the search path, and does so in the child
1641 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1642 been removed; it can be found in the CVS history, for somebody who
1643 needs that search behavior (see the manual).
1644 * minor incompatible change: compiler policy re. weakening type
1645 checks has changed: now type checks are weakened only if SAFETY < 2
1647 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1648 unparsing of directory pathnames as files. Analogously,
1649 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1650 filename to parse into a directory pathname.
1651 * enhancement: implicit generic function creation now signals a
1652 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1653 users can bind handlers for and muffle around calls to LOAD.
1654 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1655 to be used (using the default stream external format), and allows
1656 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1657 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1658 strings and vectors whose element-type or simplicity is not fully
1659 known at compile-time.
1660 * optimization: STRING-TRIM and related functions no longer allocate
1661 a new string when no trimming needs to be performed. These functions
1662 are also faster than before when the input string has been declared
1664 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1665 * optimization: READ-LINE is significantly faster for files containing
1667 * optimization: non-open coded uses of character comparison operators
1668 (e.g. char=) no longer cons when called with more than one parameter
1669 on platforms supporting dynamic-extent allocation.
1670 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1671 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1672 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1674 * bug fix: some sequence functions elided bounds checking when
1676 * bug fix: too liberal weakening of union-type checks when SPEED >
1678 * bug fix: more bogus fixnum declarations in ROOM implementation
1681 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1682 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1683 :SYNCHRONIZED argument, which makes the hash-table safe for
1684 concurrent accesses (but not iteration.) See also:
1685 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1686 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1687 * optimization: CONCATENATE on strings is an order of magnitude faster
1688 in code compiled with (> SPEED SPACE).
1689 * optimization: SUBSEQ is ~50% faster on lists.
1690 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1691 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1692 END is smaller then START.
1693 * bug fix: SB-PROFILE will no longer report extra consing for nested
1694 calls to profiled functions.
1695 * bug fix: ROOM implementation had bogus fixnum declarations which
1696 could cause type-errors when calling ROOM on large images.
1697 * bug fix: if file compilation is aborted, the partial fasl is now
1698 deleted, and COMPILE-FILE returns NIL as the primary value.
1699 * bug fix: number of thread safety issues relating to SBCL's internal
1700 hash-table usage have been fixed.
1701 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1702 be returned from its body when the values were being returned
1703 using unknown-values return convection and the W-P-O was wrapped
1704 inside an UNWIND-PROTECT.
1705 * bug fix: sb-posix should now compile again under Windows, enabling
1706 slime to work again.
1708 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1709 * incompatible change: hash-table accessor functions are no longer
1710 automatically protected by locks. Concurrent accesses on the same hash-table
1711 from multiple threads can give inconsistent results or even corrupt the
1712 hash-table completely. Multi-threaded applications should do their own
1713 locking at the correct granularity. In the current implementation it is
1714 still safe to have multiple readers access the same table, but it's not
1715 guaranteed that this property will be maintained in future releases.
1716 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1717 and will signal an error at runtime.
1718 * enhancement: SB-THREAD package now exports a semaphore interface.
1719 * enhancement: CONS can now stack-allocate on x86 and
1720 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1722 * enhancement: nested lists can now be stack allocated on
1723 platforms providing stack allocation support.
1724 * enhancement: dynamic-extent support has been extended to support
1725 cases where there are multiple possible sources for the stack
1727 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1728 if the mutex is uncontested on Linux.
1729 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1730 as specified by the CLHS. (thanks to Tobias Rittweiler)
1731 * bug fix: NaN comparison now works on x86-64.
1732 * bug fix: CLOSE :ABORT T on a stream with pending output now
1734 * bug fix: instances of non-standard metaclasses using standard
1735 instance structure protocol sometimes missed the slot type checks
1737 * bug fix: known functions can be inlined in high-debug code.
1739 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1740 * minor incompatible change: the MSI installer on Windows no longer
1741 associates .lisp and .fasl files with the installed SBCL.
1742 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1743 on Windows. (thanks to Luis Oliviera)
1744 * new feature: SB-CLTL2 contrib module now implements
1745 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1746 * optimization: scavenging weak pointers is now more efficient,
1747 requiring O(1) instead of O(N) per weak pointer to identify
1748 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1749 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1750 method bodies using constant slot-names when the first argument is
1751 a specializer parameter for the method.
1752 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1753 names, when the class of the instance is a direct instance
1754 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1755 as slow as the constant slot-name case.)
1756 * optimization: member type construction is now O(N) instead
1758 * optimization: UNION and NUNION are now O(N+M) for large
1759 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1761 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1762 now more readable in environments like Slime which display it.
1763 (thanks to Tobias C. Rittweiler)
1764 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1765 was able to infer the correct argument type for the object on which
1766 the CAS operation was being performed.
1767 * bug fix: copy propagation interfered with parallel assignment
1768 semantics in local calls. (reported by Paul Khuong)
1769 * bug fix: the signed modular fixnum shift compiled to wrong code on
1770 x86 and x86-64. (spotted by a slight modification to some of
1773 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1774 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1775 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1776 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1778 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1779 and generic function now print the object identity for anonymous
1780 instances. (thanks to Attila Lendvai)
1781 * enhancement: as an extension to MOP, SBCL now supports SETF of
1782 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1783 (thanks to Attila Lendvai)
1784 * enhancement: sb-cover has an alternate annotation mode which puts
1785 the form annotations at the car of the form, instead of annotating
1786 it completely. The benefit of this mode is that it shows better
1787 which forms were instrumented by the compiler.
1788 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1789 by printer control variables. (reported by Dan Corkill)
1790 * bug fix: system leaked memory when delayed output was performed by
1791 the OS in smaller chunks then expected. (thanks to David Smith)
1792 * bug fix: system leaked memory when file streams were not closed
1794 * bug fix: large objects written to slow streams that were modified
1795 after the write could end up with the modified state written to
1796 the underlying file descriptor.
1797 * bug fix: multiple threads operating in parallel on the same stream
1798 could cause buffer-overflows.
1799 * bug fix: source location information is stored correctly
1800 (broken since 1.0.6). This bug would generally show up as the
1801 Slime debugger highlighting the wrong form when the sldb-show-source
1803 * bug fix: Branch forms are again annotated as branches in the sb-cover
1805 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1806 on x86-64. (reported by Gregory Vanuxem)
1807 * bug fix: EQUALP could return wrong results for structures with raw
1808 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1809 word). (reported by Vjacheslav Fyodorov)
1810 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1813 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1814 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1815 atomic compare-and-swap operations on threaded platforms.
1816 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1817 allows assigning a global minimum value to optimization qualities
1818 (overriding proclamations and declarations).
1819 * enhancement: closed over variables can be stack-allocated on x86
1821 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1823 * optimization: slot definition lookup is now O(1). This speeds up
1824 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1825 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1826 * optimization: ASSOC and MEMBER can now be open-coded for all
1827 combinations of keyword arguments when second argument is constant
1828 and SPEED >= SPACE. In other cases a specialized version is
1830 * bug fix: using obsoleted structure instances with TYPEP and
1831 generic functions now signals a sensible error.
1832 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1833 (reported by Kristoffer Kvello)
1834 * bug fix: backtrace construction is now more careful when making
1835 lisp-objects from pointers on the stack, to avoid creating bogus
1836 objects that can be seen by the GC.
1837 * bug fix: defaulting of values in contexts expecting more than 7
1838 variables now works on x86-64. (reported by Christopher Laux)
1839 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1841 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1842 as the property-list of a symbol.
1843 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1844 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1845 situations requested, are once again file-compileable. (reported
1848 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1849 * MOP improvement: support for user-defined subclasses of
1850 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1851 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1852 the expansion of DEFMETHOD, is responsible for generating a form
1853 which creates a list of specializers when evaluated. Additional
1854 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1855 debugging and introspective support.
1856 * minor incompatible change: the (unsupported) spinlock interface
1857 has changed: free spinlock now has the value NIL, and a held spinlock
1858 has the owning thread as its value.
1859 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1860 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1862 * enhancement: name of a socket-stream is now "a socket" instead of
1863 "a constant string".
1864 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1865 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1866 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1867 for generic functions. (Thanks to Tobias C. Rittweiler)
1868 * optimization: bignum printing speed has been improved by 20-40%
1869 (depending on the bignum size.)
1870 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1872 * bug fix: the cache used by the CLOS to store precomputed effective
1873 methods, slot offsets, and constant return values is now thread and
1875 * bug fix: generic function dispatch function updating is now thread
1876 and interrupt safe (in the sense that the known issues have been
1878 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1879 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1880 * bug fix: asdf systems with dependencies to the SB-POSIX or
1881 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1882 * bug fix: interrupt safety of applicable method computation has been
1885 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1886 * new contrib: sb-cover, an experimental code coverage tool, is included
1887 as a contrib module.
1888 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1889 significantly faster.
1890 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1891 produce more efficient code on x86-64 if the compiler can determine
1892 that (+ INDEX <constant>) does not require a bounds check and FOO
1893 has an element type at least 8 bits wide.
1894 * enhancement: a new, experimental synchronous timeout facility is
1895 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1896 * enhancement: when a symbol name conflict error arises, the
1897 conflicting symbols are always printed with a package prefix.
1898 (thanks to Kevin Reid)
1899 * enhancement: stepping is now once again supported on the SPARC and
1900 MIPS platforms. (It is also now more likely to work on CheneyGC
1902 * enhancement: sb-sprof can now also track and report accurate call
1904 * bug fixes: the treatment of non-standard subclasses of
1905 SB-MOP:SPECIALIZER is more correct.
1906 * incompatible change: PURIFY no longer copies the data from the
1907 dynamic space into the static and read-only spaces on platforms
1908 that use the generational garbage collector
1909 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1911 * bug fix: GC race condition occasionally resulting in crashes with
1912 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1914 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1916 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1917 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1918 * bug fix: an asynchronous interrupt could previously leave the
1919 system running with GC inhibited.
1920 * bug fix: a DECLARE form evaluated at top-level now causes an error
1921 rather than silently (or verbosely) returning NIL.
1922 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1923 result in a error being signalled due to source form lookup errors.
1924 (reported by Peter Graves)
1926 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1927 * incompatible change: removed writer methods for host-ent-name,
1928 host-ent-addresses -- changing the values did not update the DNS
1930 * minor incompatible change: changed experimental JOIN-THREAD interface
1931 * documentation: the manual now lists reader and writer methods
1932 in class slot documentation sections. (thanks to Richard M Kreuter)
1933 * documentation: unwinding from asyncronous events has been
1934 documented as unsafe.
1935 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1936 in multithreaded application code.
1937 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1938 platforms. (thanks to James Anderson for the optimization hint)
1939 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1941 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1942 variants no longer cons.
1943 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1944 their NOT- variants no longer cons.
1945 * optimization: EQUAL hash tables no longer use SXHASH for objects
1946 of all data types, but instead use an EQL hash for types for which
1947 EQUAL is the same as EQL.
1948 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1949 are significantly faster.
1950 * optimization: new STRING-OUTPUT-STREAM implementation is much
1951 faster for large outputs and conses 30% less on average.
1952 * enhancement: XREF information is now collected for references made
1953 to global variables using SYMBOL-VALUE and a constant argument.
1954 * enhancement: SIGINT now causes a specific condition
1955 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1956 * bug fix: FILE-POSITION used to signal an error in some cases where
1957 ANSI requires it to return NIL.
1958 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1959 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1960 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1962 * bug fix: bad type declaration in the CLOS implementation has
1963 been fixed. (reported by James Anderson)
1964 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1965 (thanks to Lutz Euler)
1966 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1967 required by the CLHS. (reported by Samium Gromoff)
1968 * bug fix: dead unbound variable references now signal an error.
1969 (reported by Marco Monteiro)
1970 * bug fix: / with an unused value was being deleted in safe code.
1971 (thanks to Marco Monteiro and Kevin Reid)
1972 * bug fix: number of characters that can be written onto a single
1973 line in a file is unlimited.
1974 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1975 been fixed by inhibiting interrupts for when GC is disabled.
1976 * bug fix: some interrupt safety issues with GETHASH, (SETF
1977 GETHASH), CLRHASH and REMHASH have been fixed.
1978 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1979 specifier no longer causes infinite recursion.
1980 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1981 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1982 * bug fix: an &environment argument with the correct variable information
1983 is passed to macros that are expanded during byte compilation.
1984 (reported by Samium Gromoff)
1985 * bug fix: a logic error was causing the hash function for bignums to
1986 have excessive amounts of collisions. (reported by Faré Rideau)
1987 * bug fix: modifying the contents of an array could change the return
1988 value of SXHASH on that array, which is only allowed for strings
1989 and bit vectors. (bug introduced in 0.9.16)
1990 * improvement: the x86-64/darwin port now passes all tests (except
1991 for the debugger tests) but should still be considered
1992 experimental until this is fixed.
1993 * improvement: a style-warning is signaled for CASE (etc) clauses with
1994 duplicate keys. (thanks to Kevin Reid)
1995 * improvement: macos/x86 and macos/x86-64 now use mach exception
1996 handlers for dealing with illegal instructions (for trapping and
1997 error handling) and memory protection violations (for GC).
1999 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2000 * new platform: experimental support for x86-64/darwin (MacOS).
2001 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2002 and getnameinfo sockets functions are used instead of gethostbyaddr
2003 and gethostbyname, on platforms where the newer functions are available.
2004 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2006 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2007 don't print the startup banner, but behave as if --noinform was passed
2008 as a command line argument. (thanks to Kevin Reid)
2009 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2010 * optimization: code using alien values with undeclared types is much faster.
2011 * optimization: the compiler is now able to open code SEARCH in more cases.
2012 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2013 * bug fix: using standardized COMMON-LISP special variables as loop
2014 variables no longer signals bogus package lock violations. (reported
2016 * bug fix: declaring local loop variables to be of a range-limited type
2017 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2018 (reported by Andras Simon)
2019 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2020 bugs remain on x86-64.)
2021 * bug fix: the #= and ## reader macros now interact reasonably with
2022 funcallable instances.
2023 * bug fix: type-checks for function arguments were compiled using the
2024 compiler policy settings of the wrong lexical environment (in 1.0.2
2026 * bug fix: SHADOW accepts characters as string designators, as required
2027 by the spec (thanks to Eric Marsden)
2028 * bug fix: fixed GC safety issues when foreign functions are called with
2029 non-base strings as arguments
2030 * bug fix: more consistent error output for fatal-compiler-warnings, like
2032 * bug fix: functions with proper names were showing up as NIL in
2033 backtraces (reported by Edi Weitz, regression in 1.0.2)
2035 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2036 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2037 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2038 produce more efficient code on the x86 if the compiler can determine
2039 that (+ INDEX <constant>) does not require a bounds check and FOO
2040 has an element type at least 8 bits wide.
2041 * bug fix: references to undefined variables are handled the same way
2042 in toplevel forms as in the normal compiler
2043 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2045 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2046 (thanks to Jon Buller)
2047 * improvement: faster compilation times for complex functions
2048 * improvement: added readlink support to SB-POSIX (thanks to Richard
2051 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2052 * improvement: experimental support for mach exception handling on
2053 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2055 * improvement: support for GBK external format.
2056 (thanks to Chun Tian (binghe))
2057 * improvement: the debugger now displays variables that have been closed
2058 over, in code compiled with (DEBUG 2) or higher
2059 * improvement: support for executable cores on NetBSD (thanks to
2061 * new feature: added a RESTART-FRAME debugger command
2062 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2063 be used to provide an implementation for FILE-POSITION on Gray streams
2064 (thanks to Eric Marsden)
2065 * new feature: add syslog, openlog and closelog support to SB-POSIX
2066 (thanks to Richard Kreuter)
2067 * optimization: the function call overhead in code compiled with
2068 a high DEBUG optimization setting is significantly
2069 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2070 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2071 (thanks to Tony Martinez)
2072 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2073 evaluated once (reported by Kevin Reid)
2074 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2075 works again (thanks to Kilian Sprotte)
2076 * bug fix: an error is signaled for tagbodies with duplicate tags
2077 (thanks to Stephen Wilson)
2078 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2079 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2080 stack frames from alien callbacks.
2081 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2082 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2083 65k pages (thanks to David Woodhouse)
2084 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2086 changes in sbcl-1.0.1 relative to sbcl-1.0:
2087 * new platform: FreeBSD/x86-64, including support for threading.
2088 * new feature: the compiler stores cross-referencing information
2089 about function calls (who-calls), macroexpansion (who-macroexpands)
2090 and special variables (who-binds, who-sets, who-references) for code
2091 compiled with (< SPACE 3). This information is available through the
2092 sb-introspect contrib.
2093 * new feature: users may subclass SEQUENCE, and have instances of
2094 these classes interoperate with standard Common Lisp functions if
2095 a number of methods are defined. (This feature is experimental
2096 and the interface subject to change based on feedback from SBCL
2097 users and the general community)
2098 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2099 x86/x86-64, rather than the previous fixed depth of 8
2100 * improvement: another pthread back-end of mutex "pthread-futex".
2101 * bug fix: non-ascii command-line arguments are processed correctly
2102 (thanks to Yaroslav Kavenchuk)
2103 * bug fix: non-required arguments were not passed correctly when a method
2104 defined using DEFMETHOD was called from a mop-generated method using
2105 CALL-NEXT-METHOD (reported by Pascal Costanza)
2106 * bug fix: recursion is now permitted in accessors through
2107 SLOT-UNBOUND. (reported by Pascal Costanza)
2108 * bug fix: an error was signaled at startup if the HOME environment
2109 variable was defined, but had an empty value (reported by Peter Van Eynde)
2110 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2111 signal a PROGRAM-ERROR, not a BUG.
2112 * bug fix: SB-POSIX:READDIR works when built with large file support.
2113 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2115 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2116 for better automatic indentation support. (thanks to Matt Pillsbury)
2117 * optimization: loading generic functions no longer takes O(n^2) time,
2118 proportional to the amount of methods in the generic function
2119 (reported by Todd Sabin and Jeremy Brown)
2120 * optimization: the FIND and POSITION family of sequence functions
2121 are significantly faster on arrays whose element types have been
2123 * improvements to the Windows port:
2124 ** Intermittent heap corruption problems have been fixed. (thanks
2125 to Alastair Bridgewater)
2126 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2128 ** Lisp is able to unwind foreign exception frames from alien
2129 callbacks. (thanks to Alastair Bridgewater)
2131 changes in sbcl-1.0 relative to sbcl-0.9.18:
2132 * improvement: experimental support for threading on FreeBSD/x86.
2133 (thanks to NIIMI Satoshi)
2134 * improvement: runtime option --dynamic-space-size can be used
2135 to set the size of the dynamic space reserved on startup.
2136 * improvement: floating point modes in effect are now saved in
2137 core, and restored on startup.
2138 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2139 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2140 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2141 threads are not running after *SAVE-HOOKS* have run.
2142 * improvement: writes to CLOS instance slots are type-checked in code
2143 compiled with (SAFETY 3)
2144 * improvement: floating-point exception handling on FreeBSD (thanks to
2146 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2147 (thanks to Zach Beane)
2148 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2150 * improvement: added support for the Shift-JIS external format.
2151 (contributed by NIIMI Satoshi)
2152 * improvement: callbacks are supported on Linux/PPC. (thanks to
2154 * bug fix: compiler bug triggered by a (non-standard) VALUES
2155 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2156 * bug fix: file compiler no longer confuses validated and already
2157 dumped structurres. (reported by Kaersten Poeck)
2158 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2159 fill-pointer signals a type-error as required. (thanks to
2161 * bug fix: disassemly of funcallable instances works.
2162 * bug fix: single stepping on PPC.
2163 * bug fix: fix thread-safety problems in the type system (generally
2164 manifesting as nonsensical errors like "STRING is a bad type specifier
2165 for sequences" or "The value 1 is not of type FIXNUM")
2166 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2167 (reported by Josip Gracin)
2168 * bug fix: an error is signaled for attempts to displace arrays with
2169 incompatible element types (thanks to Mario Mommer)
2170 * bug fix: more correct handling of wide characters in debug info
2171 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2172 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2173 and don't cause extra consing
2174 * optimization: MAP and MAP-INTO are significantly faster on vectors
2175 whose elements types have been declared.
2176 * Improvements to SB-SPROF:
2177 ** Support for allocation profiling
2178 ** Reduced profiling overhead, especially for long profiling runs
2179 * Improvements to the Windows port:
2180 ** floating point exceptions are now reported correctly.
2181 ** stack exhaustion detection works partially.
2182 ** more accurate GET-INTERNAL-REAL-TIME.
2183 ** better RUN-PROGRAM behaviour in case of errors in the child
2185 ** PROBE-FILE now simplifies pathnames correctly.
2186 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2187 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2188 1st 1970 (although time timezone data will be unreliable).
2189 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2191 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2192 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2193 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2195 * bug fix: two potential GC deadlocks affecting threaded builds.
2196 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2197 returns T (reported by Anton Kazennikov)
2198 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2199 with non-variable places
2200 * bug fix: remove a race condition in the setting of
2201 funcallable-instance functions, this should make threaded CLOS
2202 code more stable against memory faults.
2203 * bug fix: corruption of specials when unbinding is interrupted by an
2204 asynchronous unwind (reported by Hannu Koivisto)
2205 * improvement: the debugger will now also display local variables that
2206 are only used once, for code compiled with a DEBUG optimization quality
2209 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2210 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2211 * incompatible change: External-format support for FFI calls. The
2212 SB-ALIEN:C-STRING no longer implies an ASCII
2213 external-format. Instead the string is subject to external-format
2214 conversion. Additionally return values of type SB-ALIEN:C-STRING
2215 are by default of type (SIMPLE-ARRAY CHARACTER), not
2216 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2217 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2218 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2219 * incompatible change: SB-EXT package no longer contains the
2220 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2221 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2223 * incompatible change: the single-stepper is no longer available
2224 on Alpha, Mips and Sparc platforms.
2225 * minor incompatible change: the direct superclasses of
2226 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2227 not (STANDARD-OBJECT FUNCTION). This makes the
2228 class-precedence-lists of GENERIC-FUNCTION and
2229 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2231 * minor incompatible change: the default stream external format on
2232 non-unicode SBCL is no longer detected from the locale, but is always
2234 * new feature: Add a version of evaluator that uses an interpreter instead
2235 of the compiler. EVAL still uses the compiler by default, to switch it
2236 to use the interpreter, set the value of the variable
2237 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2238 * minor incompatible change: the single-stepper REPL has been merged
2239 with the normal debugger (see the "Stepping" heading of the debugger help
2240 for more details). The debugger command STEP will no longer switch
2241 to the single-stepper REPL.
2242 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2243 for a type now works.
2244 * bug fix: loading of default sysinit file works. (thanks to Leonid
2246 * bug fix: better detection of circularities in the file-compiler.
2247 (reported by Marco Monteiro)
2248 * bug fix: the CL pathname functions now work with files that have
2249 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2250 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2251 systems with Unix98 pty semantics.
2252 * bug fix: ASDF-INSTALL will now work with bsd tar.
2253 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2255 * bug fix: timers expiring in dead threads no longer cause a
2256 type-error (reported by Paul "Nonny Mouse").
2257 * bug fix: thanks to more lightweight single-stepper instrumentation,
2258 code compiled with (DEBUG 3) will compile and execute significantly faster,
2259 and will have more accurate type-inferencing than before
2260 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2261 whose bindings are modified
2262 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2263 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2264 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2265 CL:SOFTWARE-VERSION with proper version
2267 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2268 * feature: implemented the READER-METHOD-CLASS and
2269 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2270 as specified by AMOP.
2271 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2273 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2274 (thanks to Lutz Euler)
2275 * optimization: hashing of general arrays and vectors has been
2276 improved. (reported by Any Fingerhut)
2277 * enhancement: SB-INTROSPECT is now able to find definitions of
2278 profiled functions. (thanks to Troels Henriksen)
2279 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2280 as well, allowing compiler-macros for SETF-functions to expand.
2281 * enhancement: step-instrumentation no longer wraps known
2282 single-value functions with multiple-value context, allowing
2283 better type inference.
2284 * fixed bug #337: use of MAKE-METHOD in method combination now works
2285 even in the presence of user-defined method classes. (reported by
2286 Bruno Haible and Pascal Costanza)
2287 * fixed bug #339(c): if there are applicable methods not part of any
2288 long-form method-combination group, call INVALID-METHOD-ERROR.
2289 (reported by Bruno Haible)
2290 * fixed bug #361: the :FUNCTION initarg in the protocol for
2291 initialization of methods can now be used to override
2292 internally-produced optimized functions. (reported by Bruno
2294 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2295 system-provided lambda expression no longer cause warnings about
2296 unbound #:|pv-table| symbols.
2297 * bug fix: improved the handling of type declarations and the
2298 detection of violations for keyword arguments with non-constant
2300 * bug fix: potentially erronous calls to PATHNAME and
2301 MERGE-PATHNAMES were being flushed in some cases.
2302 (reported by Richard Kreuter)
2303 * bug fix: compiled calls to TYPEP were mishandling obsolete
2304 instances. (reported by James Bielman and Attila Lendvai)
2305 * bug fix: format strings with ~> without matching ~< no longer
2306 trigger an AVER, but signal an understandable error instead.
2307 (reported by Antonio Martinez)
2308 * bug fix: specifying an output-file without a pathname-type for
2309 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2310 of input-file instead of "fasl". (reported by Robert Dodier)
2311 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2312 (reported by James Y Knight).
2313 * bug fix: compiler-macros-function did not consider the environment
2314 argument for shadowing by local functions.
2315 * bug fix: compiler-macros expansion was inhibited by local INLINE
2317 * bug fix: inline expansions of known functions were subject to
2318 step-instrumentation in high debug policies, leading to problems
2319 with type-inference.
2320 * bug fix: compiler failed to differentiate between different CONS
2321 types in some cases.
2322 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2323 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2324 * bug fix: #368: incorrect use of expressed vs. upgraded array
2326 * bug fix: #306a: more precise unions of array types.
2327 * thread-safety improvements:
2328 ** CONDITION-WAIT could return early on Linux, if the thread was
2329 interrupted and subsequently continued with SIGCONT.
2330 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2332 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2333 * added support for the ucs-2 external format. (contributed by Ivan
2335 * minor incompatible change: pretty printing of objects of type
2336 (cons symbol) is, in the default pprint-dispatch-table, now
2337 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2339 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2340 called later in a class's lifetime, possibly as late as when the
2341 first instance of the class is created. Previously,
2342 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2343 class became finalizeable.
2344 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2345 for multibyte external-format streams. (thanks to "vbzoli")
2346 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2347 with :ALLOCATION :CLASS inherited from superclasses of the
2349 * fixed bug: anonymous classes can now be created using the :NAME
2350 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2351 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2352 * fixed bug: core-files saved with :EXECUTABLE T can again be
2353 executed when SBCL_HOME isn't set. (reported by James Knight)
2354 * fixed bug: toplevel LOCALLY forms with declarations could
2355 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2356 * fixed bug: printing from several different threads using different
2357 values of *print-case* could cause invalid output, due to
2358 some internal special variables of the printer not being bound
2359 thread-locally (reported by Max Mikhanosha)
2360 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2361 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2362 (reported by Pascal Costanza)
2363 * fixed bug: FINALIZE-INHERITANCE is called from
2364 REINITIALIZE-INSTANCE on classes when the class has previously
2365 been finalized, as required by AMOP.
2366 * minor code generation optimizations:
2367 ** better register allocation in CLOS dispatching functions
2368 ** overflow detection when coercing signed bytes to fixnums on x86-64
2369 ** is now implemented with one IMUL instruction instead of three shifts
2370 ** more efficient bit-vector access on x86 and x86-64
2371 ** more efficient access to raw structure slots on x86 and x86-64
2372 * fixed some bugs revealed by Paul Dietz' test suite:
2373 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2374 return its argument.
2376 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2377 * feature: thread support on Solaris/x86, and experimental thread support
2379 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2381 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2382 default method for SLOT-UNBOUND.
2383 * minor incompatible change: prevent the user from specializing the
2384 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2385 somewhat counter to the intent of the protocol, I (CSR) think, and
2386 additionally it just doesn't work in SBCL as currently
2387 implemented, thanks to optimizations (that are always valid for
2388 the other three SLOT-VALUEish functions, but not for the setter).
2389 * minor incompatible change: the :SB-LDB feature is now enabled by
2390 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2391 the low-level debugger.
2392 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2393 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2394 down to an SB-SYS:FD-STREAM, allowing direct communication in
2395 more cases. Temporary files and pipes are still used as a fallback
2397 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2398 on the non-reentrant C functions localtime(3) and gmtime(3).
2399 * bug fix: global optimization policy was not visible in LOCALLY and
2401 * bug fix: class objects can be used as specializers in methods.
2402 (reported by Pascal Costanza)
2403 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2404 with a type error. (reported by blitz_ on #lisp)
2405 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2406 failed with a type error. (reported by Pascal Bourguignon)
2407 * bug fix: merging pathnames against defaults with :DIRECTORY
2408 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2409 (reported by James Y Knight)
2410 * bug fix: saving large (>2GB) cores on x86-64 now works
2411 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2412 constant index and a (simple-array (signed-byte 32)) array
2413 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2414 error (patch by Robert J. Macomber)
2415 * feature: TIME now displays the amount of run-time spent in GC
2416 * bug fix: The debugger now does a better job of respecting
2417 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2418 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2419 workaround for bug 403.)
2420 * bug fix: floating point exception handling now works on FreeBSD
2421 (thanks to NIIMI Satoshi)
2422 * fixed some bugs revealed by Paul Dietz' test suite:
2423 ** MISC.641: LET-conversion were not supposed to work in late
2425 * improvements to the Win32/x86 port:
2426 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2427 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2429 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2430 * new feature: source path information is generated for macro-expansion
2431 errors for use in IDE's like Slime (thanks to Helmut Eller)
2432 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2433 * bug fix: compiler does not loop forever on an invalid type in
2435 * improvement: compilation of most CLOS applications is significantly
2437 * optimization: added a limited bytecode compiler for simple toplevel
2438 forms, speeding up compilation and FASL loading
2439 * bug fix: the statistical profiler now properly distinguishes anonymous
2442 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2443 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2444 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2445 into subclasses of the finalized class. Now user calls to
2446 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2447 system return before any subclasses are finalized.
2448 * minor incompatible change: The reader no longer ignores errors
2449 regarding non-existent packages in #+ and #- feature tests.
2450 * new feature: command line options --no-sysinit, --no-userinit to
2451 inhibit loading the corresponding init files
2452 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2453 for sending data through UDP sockets (thanks to François-René Rideau)
2454 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2455 error is signalled instead (thanks to François-René Rideau)
2456 * minor incompatible change: Error signalling behaviour of lexical
2457 operations violating package locks has changed slightly. Refer to
2458 documentation on package locks for details.
2459 * enhancement: EVAL can process IF-expressions without resorting to the
2461 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2462 constant-folded properly due to missing out-of-line functions.
2463 (reported by Mika Pihlajamäki)
2464 * bug fix: LISTEN sometimes returned T even in cases where no data was
2465 immediately available from the stream
2466 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2467 were reversed. (reported by Levente Mészáros)
2468 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2469 when given a vector displaced to an adjustable array. (reported
2471 * bug fix: derivation of float boundaries from numbers outside the
2472 appropriate float range (reported by John Wiseman)
2473 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2475 * bug fix: precomputing cache entries for generic functions with
2476 some subclasses of specializers as yet invalid does not attempt to
2477 fill a cache line with a negative offset. (reported by Levente
2479 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2480 allow condition class objects as arguments to DOCUMENTATION and
2481 (SETF DOCUMENTATION); only find and set documentation for
2482 structure names for the STRUCTURE doc-type. (suggested by Gary
2484 * improvements to the Win32/x86 port:
2485 ** (user-homedir-pathname) and default initialization file
2486 locations now know about the user's "Documents and Settings"
2487 directory (thanks to Yaroslav Kavenchuk)
2488 ** run-program is implemented (thanks to Mike Thomas)
2489 ** sockets support (thanks to Timothy Ritchey)
2490 ** better backtrace support (thanks to Alastair Bridgewater)
2491 ** sb-grovel supported
2492 ** asdf-install and sb-posix work somewhat
2493 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2494 * improvements to the Solaris/x86 port:
2495 ** works on Solaris 11/Solaris Express
2496 ** floating-point exception handling support
2497 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2498 * fixed some bugs revealed by Paul Dietz' test suite:
2499 ** REMOVE-METHOD returns its generic function argument even when
2500 the method is not one of the generic functions' methods.
2501 ** objects declared as MEMBER types can be admissible arguments to
2502 structure accessors.
2503 ** printing characters should simply be printed by the FORMAT ~:C
2505 ** compiler failure when compiling functions with hairy constant
2506 defaults for optional parameters.
2507 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2508 function, which is already optimized.
2510 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2511 * new platform: experimental support for SBCL x86/Darwin, including
2512 MacOS X 10.4.5 on Intel.
2513 * new feature: Unicode character names are now known to the system
2514 (through CHAR-NAME and NAME-CHAR).
2515 * new feature: the filesystem location of SBCL's core file is
2516 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2517 * minor incompatible change: the contrib modules SB-POSIX and
2518 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2519 this change is to make it easier to distribute
2520 location-independent binaries.
2521 * bug fix: as implied by AMOP, standardized classes no longer have
2522 slots named by external symbols of public packages. (reported by
2524 * optimization: calling functions via constant symbols -- as in
2525 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2526 via the function object as in (FUNCALL #'FOO).
2527 * optimization: on x86 and x86-64, the calling convention for the
2528 case of dealing with an unknown number of values has been altered
2529 to be friendlier to the prediction heuristics implemented,
2530 particularly with reference to CALL and RET pairing. (thanks to
2531 Alastair Bridgewater)
2532 * optimization: on x86, the code for access to thread-local symbol
2533 values and binding/unbinding of thread-local symbols is smaller.
2534 (thanks to Alastair Bridgewater)
2535 * enhancement: CONSTANTP is now able to determine constantness of
2536 more complex forms, including calls to constant-foldable standardized
2537 functions and some special forms beyond QUOTE.
2538 * fixed bug: occasional GC crashes on Solaris/x86
2539 * optimization: x86-64 supports stack allocation of results of simple
2540 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2541 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2542 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2543 (thanks to James Knight)
2544 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2545 by the standard (thanks to Stephen Compall)
2547 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2548 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2549 be used for bundling the runtime and the core file into one
2550 executable binary. This feature is not currently supported on all SBCL
2551 platforms. (thanks to James Bielman and NIIMI Satoshi)
2552 * new feature: a generational or ephemeral garbage collector is now
2553 the default on the PowerPC platform (both Linux and Darwin). The
2554 old Cheney (stop and copy) collector is a build-time option.
2555 (thanks to Cyrus Harmon, after Raymond Toy)
2556 * minor incompatible change: the method by which SBCL finds its
2557 contributed modules has changed; it no longer relies on symbolic
2558 links from an $SBCL_HOME/systems directory, but searches directly
2559 in the subdirectories of $SBCL_HOME.
2560 * enhancement: the dynamic heap size on the Linux/PPC platform is
2561 markedly larger, even using the older Cheney garbage collector.
2562 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2563 certain complicated string types. (reported by Gary King)
2564 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2565 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2566 * fixed bug: DOCUMENTATION on structures no longer signals an
2567 error if no structure type of the right name exists. (reported by
2569 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2570 applicable non-standard primary or :AROUND method on
2571 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2572 no longer cause unbound variable errors. (reported by Kevin Reid)
2573 * fixed bug: metacircle resolution in cases where methods have slots
2574 added before the slots from STANDARD-METHOD. (reported by Jean
2576 * fixed bug: the Power PC assembly code for calling into lisp
2577 sometimes computed its return address wrongly (depending on the
2578 15th bit of the address, fixed at link time). This used to
2579 manifest itself in a segmentation violation while building PCL.
2580 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2581 many others over the years)
2582 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2583 the stack pointer (treated as a signed integer) is negative.
2584 (thanks to Peter van Eynde)
2586 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2587 * new platform: experimental support for the Windows operating
2588 system has been added. (thanks to Alastair Bridgewater)
2589 * fixed several bugs in and robustified the PPC FFI (including
2590 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2591 * bug fix: allow non-simple string symbol names (reported by Paul
2593 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2595 * bug fix: saving a core corrupted callbacks on x86/x86-64
2596 * bug fix: closed a loophole in metacircularity detection and
2597 grounding in the PCL implementation of CLOS.
2598 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2599 (reported by tomppa on #lisp)
2600 * bug fix: clear the direction flag on Lisp -> C transitions, as
2601 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2602 (reported by Andrej Grozin and Hendrik Maryns)
2603 * optimization: major improvements to GC efficiency on GENCGC platforms
2604 * optimization: faster implementation of EQUAL
2605 * optimization: emit more efficient opcodes for some common
2606 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2607 * optimization: several other minor code-generation improvements on x86-64
2608 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2610 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2611 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2612 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2613 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2614 by ANSI as a generic function, and for consistency (SETF
2615 GENERIC-FUNCTION-NAME) is treated likewise.
2616 * fixed bug #233.b: make constraint propagation notice when a variable
2617 value is changed after it is referenced but before it is used
2618 * fixed bug #296: no more arbitrary behaviour from filenames with
2619 odd characters as --load arguments. (reported by Adam Warner)
2620 * fixed bug #390: :CHARACTER-SET pathname components now work as
2621 expected. (reported by Tim Daly Jr)
2622 * fixed bug #391: complicated :TYPE intersections in slot
2623 definitions no longer cause an error in PCL internals.
2624 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2625 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2626 returning the number of octets which would be written to the
2627 file-stream. (thanks to Robert J. Macomber)
2628 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2629 arguments to the internal stream functions. (thanks to David
2631 * bug fix: stack exhaustion is now handled on the x86/SunOS
2632 platform. (thanks to Daisuke Homma)
2633 * bug fix: more accurate ROOM results on GENCGC platforms
2634 * optimization: improved type inference for arithmetic-for
2635 index variables in LOOP
2636 * optimization: faster floating-point SQRT on x86-64
2637 * fixed some bugs revealed by Paul Dietz' test suite:
2638 ** DOCUMENTATION returns NIL instead of "" for method combinations
2639 that don't have a docstring
2641 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2642 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2643 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2644 therefore are not customizeable by user code (as seems to be at
2645 least permitted and maybe required by AMOP). As a consolation,
2646 however, the SBCL implementation of these functions now calls
2647 REINITIALIZE-INSTANCE as specified by AMOP.
2648 * bug fix: slot-definition documentation is propagated as per ANSI
2649 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2650 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2651 argument, as do eslotd initialization methods. (from Pascal
2652 Costanza's "Closer" project)
2653 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2654 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2656 * bug fix: it is now possible to have more than one subclass of
2657 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2658 (reported by Bruno Haible, Pascal Costanza and others)
2659 * bug fix: the dependent update protocol now works for generic
2660 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2661 and Pascal Costanza)
2662 * bug fix: condition-class instances corresponding to
2663 DEFINE-CONDITION forms are now created eagerly. (reported by
2664 Kalle Olavi Niemitalo on comp.lang.lisp)
2665 * bug fix: floating point printing is more accurate in some
2666 circumstances. (thanks to Simon Alexander)
2667 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2668 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2669 * bug fix: callbacks on OS X now preserve stack-alignment.
2670 (thanks to Cyrus Harmon)
2671 * enhancement: the x86-64 disassembler is much better at
2672 disassembling SSE instructions. (thanks to Lutz Euler)
2673 * enhancement: CHECK-TYPE on a variable now allows type-inference
2674 (thanks to Vincent Arkesteijn)
2675 * optimization: improved performance of EUC-JP external format.
2676 (thanks to NIIMI Satoshi)
2677 * optimization: performance improvements to IO on file streams of
2678 :ELEMENT-TYPE CHARACTER
2679 * optimization: much faster memory allocation on x86-64
2680 * optimization: faster garbage collections (latency and throughput)
2682 * optimization: faster bignum subtraction and division on x86 and x86-64
2683 (thanks to Lutz Euler)
2684 * optimization: more accurate type-inference for loops that use a
2685 floating point index variable or a negative step.
2687 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2688 * bug fix: add a workaround to SBCL looping infinitely at startup on
2689 Linux kernels with apparently buggy implementations of personality().
2690 (thanks to Svein Ove Aas)
2691 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2692 (thanks to David Lichteblau)
2693 * bug fix: local bindings shadow global symbol macros for
2694 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2695 * optimization: non-open coded uses of numeric comparison operators
2696 (e.g. >) no longer cons when called with more than one parameter
2697 on platforms supporting dynamic-extent allocation.
2698 * enhancement: saving cores with foreign code loaded is now supported
2699 on MIPS/Linux in addition to the previously supported platforms.
2700 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2701 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2702 * bug fix: division by zero in sb-sprof when no samples were collected
2703 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2704 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2705 (thanks to Alexander Kjeldaas)
2706 * new feature: ignoring the return values of destructive functions
2707 like NREVERSE signals a compile-time style-warning.
2708 (thanks to Kevin Reid)
2709 * new feature: the alignment of alien structure fields can be
2710 explicitly specified. (thanks to Cyrus Harmon)
2711 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2712 and dump core on SIGQUIT
2714 ** incompatible change: threads do not inherit values of specials
2715 from their parents (see manual)
2716 ** bug fix: threads stacks belonging to dead threads are freed by the
2717 next exiting thread, no need to gc to collect thread stacks anymore
2718 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2719 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2720 ** bug fix: dynamic variable and thread start related gc lossage
2721 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2723 * fixed some bugs revealed by Paul Dietz' test suite:
2724 ** SUBTYPEP is slightly more accurate on heinously complicated
2725 CONS types where some of the members have uncertain (in the
2726 NIL, NIL sense) type relationships to each other.
2728 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2729 no longer purified unless :PURIFY T is explicitly specified.
2730 ** Non-purified cores are significantly smaller than before
2732 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2733 * new feature: timers based on Zach Beane's excellent timer package
2734 * added support for the following external formats: koi8-u,
2735 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2736 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2737 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2738 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2739 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2740 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2741 * incompatible change: a threaded SBCL will no longer revert to
2742 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2743 * bug fix: interrupts are disabled until startup is complete; no
2744 more sigsegvs when receiving a signal to soon
2745 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2747 * bug fix: add a workaround for the memory randomization features in
2748 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2749 workaround will only be in effect on systems with the proc filesystem
2751 * bug fix: printing objects of type HASH-TABLE signals a
2752 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2754 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2755 have been running for over 50 days. (reported by Gilbert Baumann)
2756 * bug fix: the logic for getting names of functions gets less
2757 confused when confronded with alternate-metaclass
2758 funcallable-instances. (reported by Cyrus Harmon)
2759 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2760 consistent, even on internal alternate-metaclass objects.
2761 * bug fix: flush closure information collected by physical
2762 environment analysis prepass before the main pass. (bug reported
2764 * bug fix: compiler pack phase does not modify a hashtable, which is
2765 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2766 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2767 may be expanded. (reported by Alexander <malishev> on c.l.l)
2768 * bug fix: no more style-warnings when compiling code using LAST
2769 under high-SPEED low-SPACE settings. (reported by David Wallin
2771 * fixed some incompatibilities between SBCL's MOP and the MOP
2773 ** the METAOBJECT class is now implemented;
2774 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2775 STANDARD-OBJECT, as required;
2776 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2777 now compatible (as required by VALIDATE-SUPERCLASS); there
2778 remains a consistency requirement over the presence or absence
2779 of the FUNCTION class in the superclass list of finalized
2780 classes; see the manual for more details;
2781 ** the :AROUND method for COMPUTE-SLOTS on
2782 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2783 requested slot ordering.
2785 ** bug fix: parent thread now can be gc'ed even with a live
2787 ** bug fix: binding a special with PROGV to no value is not
2788 the same as that symbol not having been bound (thanks to
2790 ** bug fix: binding specials is thread safe (thanks to
2792 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2793 and SB-SPROF do not die with 'no handler for signal XX in
2794 interrupt_handle_now(..)' anymore
2795 ** bug fix: WITH-TIMEOUT works with multiple running threads
2796 * fixed some bugs revealed by Paul Dietz' test suite:
2797 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2798 the :method-class keyword argument.
2800 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2801 * new port: the Solaris operating system on x86 processors is now
2802 mostly supported, though some rough edges in the environment
2803 remain. (thanks to Daisuke Homma)
2804 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2805 space for its heap. (thanks to Thiemo Seufer)
2806 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2807 closures. (thanks to Thiemo Seufer)
2808 * minor incompatible change: eof selects abort in the debugger.
2809 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2810 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2812 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2813 deprecated, and will go away in a future revision of SBCL.
2814 * minor incompatible change: GC-ON and GC-OFF are no longer
2815 implemented with a counter, it does not matter how many times gc
2816 is switched on or off
2817 * bug fix: discriminating functions for generic function classes
2818 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2819 make invalid assumptions about method precedence order. (reported
2821 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2822 platforms. (thanks to Thiemo Seufer)
2823 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2824 * bug fix: correct pathname printing with printer escaping is on.
2825 (thanks to Kevin Reid)
2826 * bug fix: complex VOP definitions in "user-space" no longer trigger
2827 package locks. (reported by Zach Beane)
2828 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2829 for funcallable-instance functions, and is no different from
2831 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2832 characters in the current readtable. (reported by Nicholas Neuss)
2833 * bug fix: SUBTYPEP on various CONS types returns more a more
2834 accurate acknowledgment of its certainty.
2835 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2836 lists in some cases. This partially fixes bug 384.
2837 * flush all standard streams before prompting in the REPL and the
2839 * bug fix: signal handling and triggering gc do not conflict
2840 directly anymore, in particular a high frequency sb-sprof does
2841 not prevent gc from running
2842 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2843 approximation for timezone and DST information between the
2844 universal time epoch and the smallest negative 32-bit time_t.
2845 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2846 year 1899 so long as the encoded time is non-negative.
2847 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2848 the correct answer for non-constant rotate amounts when performing
2849 an inline 32-bit rotation.
2851 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2852 there is only one thread in the session
2853 ** bug fix: memory leak for streams created in one thread and
2854 written to in another
2855 ** bug fix: lockup when compiled with gcc4
2856 ** bug fix: race that allows the gc to be triggered when gc is
2858 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2859 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2861 ** bug fix: finished threads are gc'ed properly
2862 * fixed some bugs revealed by Paul Dietz' test suite:
2863 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2864 has arguments with a different set of applicable methods from
2865 the orignal arguments.
2866 ** The type error thrown by MAP now has a correct expected-type
2868 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2869 name a compiled function.
2870 ** Three MISC tests where a large bignum was improperly coerced to
2871 a float that couldn't represent that bignum during type
2872 derivation were fixed.
2873 ** SUBTYPEP can now handle types involving the negation of a
2874 list-form FUNCTION type.
2875 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2876 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2877 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2879 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2880 * New feature: Experimental support for bivalent streams: streams
2881 opened with :element-type :default now allow character and binary
2882 (unsigned-byte 8) I/O
2883 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2884 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2886 * bug fix: no more highly sporadic "couldn't check whether ~S is
2887 readable" when reading a stream and an interrupt hits in the middle
2888 of a select system call
2889 * compiler better recognizes complex arrays (reported by Eduardo
2891 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2892 for variables on SBCL built with linkage-tables. (reported by Luis
2894 * various error reporting improvements.
2895 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2896 (Thanks to Thiemo Seufer)
2897 * bug fix: nested reader invokations work correctly
2898 * bug fix: it is possible to have simultaneous references to foreign
2899 code and foreign data with the same name.
2901 ** added x86-64 support
2902 ** incompatible change: the threading api now works with thread
2903 objects instead of thread ids
2904 ** bug fix: threads are protected from signals and interruption when
2905 starting up or going down
2906 ** bug fix: a race where an exiting thread could lose its stack to gc
2907 ** bug fix: don't halt on infinite error in threads if possible
2908 ** fixed numerous gc deadlocks introduced in the pthread merge
2909 ** bug fix: fixed thread safety issues in read and print
2910 ** bug fix: debugger doesn't hang on session lock if interrupted at
2911 an inappropriate moment
2912 ** bug fix: run-program is now thread safe(r)
2913 ** bug fix: inner with-recursive-lock no longer releases the mutex
2914 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2915 * fixed some bugs revealed by Paul Dietz' test suite:
2916 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2917 EXPECTED-TYPE slots filled.
2918 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2920 ** MAKE-CONDITION accepts classes as type-designators.
2921 ** COMPILE may never return NIL.
2922 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2923 range before calling Unix time functions
2925 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2926 * numerous signal handling fixes to increase stability
2927 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2928 * minor incompatible change: we now correctly canonize default
2929 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2930 as per the MOP, rather than the historical (INITARG INITFUNCTION
2931 INITFORM). (reported by Bruno Haible)
2932 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2933 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2934 for more information.
2935 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2936 pathname is a directory pathname.
2937 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2938 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2940 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2941 :METACLASS argument in addition to a class name. (reported by
2942 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2943 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2944 (reported by Bruno Haible; patch from Gerd Moellmann)
2945 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2947 * bug fix: more cleanups to the floating point exception handling on
2948 x86-64 (thanks to James Knight)
2949 * bug fix: the compiler does not try to constant fold calls of
2950 COERCE and BIT-* functions when they return freshly constructed
2951 objects. (reported by Nikodemus Siivola and Paul Dietz)
2952 * optimization: improved the MIPS versions of generic (in the
2953 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2954 * optimization: direct conversion of (unsigned-byte 32) to floats on
2955 the PowerPC platform.
2956 * optimization: structure instances with raw slots now use less
2957 memory, and probably show better memory locality. (thanks to
2959 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2960 are treated as requests for stack allocation on the x86-64,
2961 Alpha-32, PPC and SPARC platforms.
2962 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2963 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2964 (thanks to Tony Martinez)
2966 ** gcing a dead thread can no longer lead to lockups
2967 ** threads block signals until they are set up properly
2968 ** errno is no longer shared by threads
2969 ** interrupt-thread restores the eflags register on x86
2970 ** fixed some lockups due to gc/thread interaction
2971 * fixed some bugs revealed by Paul Dietz' test suite:
2972 ** invalid dotted lists no longer raise a read error when
2973 *READ-SUPPRESS* is T
2974 ** signal an error if a symbol that names a declaration is used
2975 as the name of a type, or vice versa
2976 ** allow using the (declare (typespec var*)) abbreviation for
2977 (declare (type typespec var*)) with all type specifiers
2978 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2979 ** always return NIL from PPRINT-POP when OBJECT is NIL
2980 ** don't signal errors when pretty-printing malformed LABELS,
2981 FLET or MACROLET forms
2982 ** declarations in a DOLIST body are also in scope for the
2984 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2986 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2989 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2990 * fixed cross-compiler leakages that prevented building a 32-bit
2991 target with a 64-bit host compiler.
2992 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2993 opened with :IF-EXISTS :OVERWRITE.
2994 * fixed bug 281: error for an invalid qualifier in a short-form method
2995 combination method is not signalled until the faulty method is called.
2996 * bug fix: iteration variable type inferrer failed to deal with open
2997 intervals. (reported by Alan Shields)
2998 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2999 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3000 or more runtime options were provided to the sbcl binary.
3001 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3002 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3003 * optimization: there's now a fast-path for fixnum arguments in the
3004 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3005 * optimization: the code generated on x86-64 is more compact thanks
3006 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3007 * bug fix: floating-point exception handling now partly works on
3008 x86-64. (Thanks to James Knight)
3009 * improvement to the MIPS backend from Thiemo Seufer: C-style
3010 64-bit long long arguments and return values to alien functions
3012 * fixed some bugs revealed by Paul Dietz' test suite:
3013 ** the type-error signalled from WARN has a filled-in DATUM slot.
3014 ** the type-error required when a stream is not associated with
3015 a file has the stream as its datum.
3016 ** type-errors on single-floats on x86-64 no longer have
3017 :INVALID-OBJECT as the datum
3018 ** the type-errors signalled for invalid function names now have
3019 a correct expected type
3020 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3021 for structures defined with a :TYPE. Documentation strings for
3022 typed structures are no longer immediately discarded
3023 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3024 broadcast streams and synonym streams. FILE-LENGTH now also works
3025 on broadcast streams.
3027 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3028 * incompatible change: the --noprogrammer option, deprecated since
3029 version 0.7.5, has been removed. Please use the equivalent
3030 --disable-debugger option instead.
3031 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3033 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3034 inoperational for a while now) has been completely removed.
3035 * null lexical environments are now printed as #<NULL-LEXENV>,
3036 significantly reducing the amount of clutter in typical backtraces.
3037 * documentation on weak pointers, finalization, and after GC hooks
3038 has been added to the manual.
3039 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3040 as other specialized array types, is much faster. SUBSEQ and
3041 COPY-SEQ on such arrays have also been sped up.
3042 * optimization: EQL is now more efficient when at least other argument
3043 is known to be of type (OR FIXNUM (NOT NUMBER)).
3044 * fixed bug: the runtime is now less vulnerable to changes in the
3045 size of the SBCL object on OS X, and virtual memory is reserved for
3046 all spaces that need to be at a fixed address.
3047 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3048 * fixed bug: finalizers and after GC hooks that cause consing are now
3050 * fixed bug: compiler error messages and summaries are now printed to
3051 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3052 * fixed inference of the upper bound of an iteration variable.
3053 (reported by Rajat Datta).
3054 * fixed bug 211e: calling local functions with duplicated constant
3055 keyword argument no longer causes a bogus style warning about an
3057 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3058 ftype declaration to be disregarded. (reported by Dave Roberts)
3059 * fixed bug 373: caused by erronous compilation of references to alien
3060 variables in the runtime on ppc/darwin.
3061 * fixed bug 376: CONJUGATE type deriver.
3062 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3063 (reported by Baughn on #lisp)
3064 * a cross-compiler bug on non-x86 platforms has been identified and
3065 fixed. (thanks to Bruno Haible)
3066 * improvements to the MIPS runtime code for increased stability.
3067 (thanks to Thiemo Seufer)
3068 * increased the maximimum compact environment size to allow
3069 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3070 * partial workaround for bug 135: don't name the function we're
3071 calling for hairy cases of EVAL, so as not to accumulate one environment
3072 entry per call to EVAL. (reported by Kevin Reid)
3073 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3074 * optimization: type testing for non-vector arrays should be faster.
3075 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3077 * bug fix: setting 31st element of a bit vector to zero did not work
3079 * bug fix: redefining a class definition which failed due to a
3080 previous accessor / function clash now works (but see BUGS entry
3081 #380 for more problems in this area). (thanks to Zach Beane)
3082 * the long form of DEFINE-METHOD-COMBINATION disables method group
3083 checking when given a single method group with pattern *. (thanks
3085 * on x86 compiler supports stack allocation of results of simple
3086 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3087 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3088 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3089 * fixed some bugs related to Unicode integration:
3090 ** the restarts for recovering from input and output encoding
3091 errors only appear when there is in fact such an error to
3093 * fixed some bugs revealed by Paul Dietz' test suite:
3094 ** MISC.549 and similar: late transformation of unsafe type
3095 assertions into derived types caused unexpected code
3097 ** SCALE-FLOAT type deriver is less wrong.
3098 ** type derivers for EXP, LOG and similar functions compute result
3099 types for complex arguments better.
3100 ** (MISC.563) CONJUGATE type deriver works for very restricted
3102 ** out-of-line type testers for character strings are available.
3103 ** EQUAL compiler transform understands specialness of objects
3105 ** accessing double-floats stored on the stack now works on x86-64.
3106 ** debugger internals could sometimes create invalid lispobjs,
3107 resulting in GC crashes.
3108 ** MISC.548: type check weakening can convert required type into
3110 ** initialization forms for bindings are not in scope of free special
3113 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3114 * incompatible change: thread support for non-NPTL systems has
3115 been removed - locking is buggy and unreliable. A threaded
3116 SBCL build will now warn at startup and refuse to create
3117 new threads, unless futex support is detected in the kernel
3118 * incompatible change: the top level REPL now has only an ABORT
3119 restart associated with it, not TOPLEVEL and ABORT as it used to.
3120 TOP and TOPLEVEL are now available as debugger commands for
3121 returning to the top level.
3122 * incompatible change: forms evaluated in the REPL now use the
3123 global optimization policy.
3124 * incompatible change: user- and system-initialization files are
3125 no longer processed with LOAD, but by READ and EVAL; hence the
3126 global optimization policy, startup package, readtable, etc,
3128 * The .fasl file format number has been incremented because of
3129 various incompatible changes.
3130 * internal entry point details and argument counts no longer appear
3131 in backtraces unless explicitly requested by setting
3132 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3133 * built-in and standard functions no longer have names like "top
3134 level local call to FOO".
3135 * fixed bug 32: functions defined in non-null lexical environments
3136 now have more legible printed representation
3137 * fixed bug 33: functions defined in non-null lexical environemnts
3138 are now more amenable to inspection by INSPECT.
3139 * workaround for bug 354: XEPs no longer appear in backtraces unless
3140 explicitly requested.
3141 * fixed bug: receiving the signal which results from attempting to
3142 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3143 SIGBUS on other *BSDs) on architectures where the C stack is also
3144 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3145 to debugger confusion or wild instability. (reported by Cheuksan
3147 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3148 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3149 (reported by Lutz Euler)
3150 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3151 compiled code. (reported by Paul Dietz)
3152 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3153 specialized parameter to a method to something that is not TYPEP
3154 the specializer is now possible.
3155 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3156 face of package deletion.
3157 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3158 pathname. (reported by David Tolpin on c.l.l)
3159 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3160 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3161 STRING-STREAM and FILE-STREAM, respectively.
3162 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3163 than previously; in addition, its test suite is now run on build.
3164 (thanks to Luke Gorrie)
3165 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3166 * optimization: added a immediate representation for single-floats
3168 * fixed some bugs revealed by Paul Dietz' test suite:
3169 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3170 ** attempting to create a package with a colliding nickname causes
3171 correctable errors to be signalled.
3172 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3173 ** several x86-64 backend bugs related to sign-extension of immediate
3176 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3177 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3178 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3180 * fixed loading of multiply forward-referenced layouts.
3181 (thanks to Cheuksan Wang)
3182 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3183 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3184 (see COMPILE-FILE documentation for details of :PRINT option)
3185 * fixed bugs 19 and 317: fixed-format floating point printing is
3186 more accurate. This also fixes a bug reported by Adam Warner
3187 related to the ~@F format directive.
3188 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3190 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3191 dispatch table if the from-char is a dispatch macro character.
3192 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3193 by the wordsize no longer ignore the last word. (reported by Lutz
3195 * fixed bug in type checking of dynamic-extent variables. (reported
3197 * optimization: sequence traversal functions use their freedom to
3198 coerce function designators to functions.
3199 * optimization: code with many calls to CLOS methods specialized on
3200 CLOS classes has had redundant type checks removed.
3201 * optimization: added declarations to speed up operations that access
3202 the internal character database (for example STRING-UPCASE)
3203 * optimization: comparison operations between floats and sufficiently small
3204 fixnums no longer create extra rationals
3205 * fixed some bugs related to Unicode integration:
3206 ** portions of multibyte characters at the end of buffers for
3207 character-based file input are correctly transferred to the
3208 start of the buffer at the next read.
3209 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3210 passing it through to OPEN.
3211 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3212 argument given to internal calls to OPEN.
3213 ** the built-in comment readers (introduced by character sequences
3214 ";" and "#|") are more forgiving to encoding errors; they will
3215 STYLE-WARN and then attempt to resync the stream at a character
3216 boundary. (thanks to Teemu Kalvas)
3217 * fixed some bugs in the x86-64 port:
3218 ** Negative short int return values from c-calls are sign-extended
3220 ** The stack is aligned to 16-bytes for c-calls, as required by
3221 the ABI. (thanks to Cheuksan Wang)
3222 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3223 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3224 for enums. (thanks to Vincent Arkesteijn)
3225 ** Multiple small optimizations and bugfixes for floating point
3227 * fixed some bugs revealed by Paul Dietz' test suite:
3228 ** Space, Tab, Linefeed, Return and Page have the invalid
3229 secondary constituent character trait.
3230 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3232 ** WITH-INPUT-FROM-STRING should only update the index place on
3234 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3235 works more reliably.
3236 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3237 with one-dimensional arrays with fill pointers.
3238 ** TYPE-OF failed on a complex with an integer realpart and a
3240 ** compiler failure during type inference for the code of form
3241 (IF (EQL X (THE ...)) ...) (MISC.535).
3243 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3244 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3245 platform. The port supports 61-bit fixnums, large memory spaces
3246 and reloading shared object files.
3247 * enhancement: saving cores with foreign code loaded is now
3248 supported on ppc/Darwin in addition to the previously supported
3250 * enhancement: the statistical profiler now walks deeper into the
3251 call stack for more meaningful call-graphs and accrued time
3252 reports (x86/x86-64 only). It also now reports time spent in
3254 * enhancement: it is now possible to trace most individual methods
3255 of a generic function in addition to tracing the generic function
3257 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3259 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3260 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3261 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3262 produces an error. (thanks to Vincent Arkesteijn)
3263 * bug fix: NAMESTRING on pathnames with :WILD components in their
3264 directories works correctly. (thanks to Artem V. Andreev)
3265 * fixed bug 125: compiler preserves identity of closures. (reported
3267 * bug fixed: functions with &REST arguments sometimes failed with
3268 "Undefined function" when compiled with (DEBUG 3). (reported by
3270 * bug fix: overflow during compiling of setting element of a bit
3271 vector with constant index and value. (reported by Timmy Douglas)
3272 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3273 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3274 * on x86 compiler partially supports stack allocation of dynamic-extent
3276 * GO and RETURN-FROM do not check the extent of their exit points
3277 when compiled with SAFETY 0.
3278 * fixed some bugs related to Unicode integration:
3279 ** encoding and decoding errors are now much more robustly
3280 handled; it should now be possible to recover even from invalid
3281 input or output to the terminal. (thanks to Teemu Kalvas)
3282 ** provided a first cut at implementing STRING-TO-OCTETS and
3283 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3284 ** altered the SB-MD5 contributed module slightly, changing the
3285 interface just enough for it to be supportable for builds where
3286 lisp characters are not eight bits.
3287 * fixed some bugs revealed by Paul Dietz' test suite:
3288 ** the FORMATTER-generated functions for ~V[ conditionals require
3289 the correct number of arguments.
3290 ** READ-FROM-STRING returns the mandated second value when applied
3291 to displaced strings.
3292 ** the #\Rubout and #\Backspace characters are treated as invalid
3293 constituent characters by the tokenizer.
3295 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3296 * new feature: reloading changed shared object files with
3297 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3298 * new feature: references to foreign variables and functions
3299 can now be compiled and loaded before the corresponding shared
3300 object file is loaded, as long as the foreign definitions are
3301 available at runtime.
3302 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3303 supported. (thanks to Dan Debertin)
3304 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3305 just keywords. (thanks to Vincent Arkesteijn)
3306 * fixed bug #331: structure-class instances corresponding to
3307 DEFSTRUCT forms are now created eagerly.
3308 * fixed bug #345: backtraces from calls to undefined functions work
3309 on x86 as well. Related bug #61 is now also partially fixed on x86
3310 (backtraces from throws to unknown catch tags.)
3311 * bug fix: lambda-list parsing is now stricter vrt. order and number
3312 of lambda-list keywords.
3313 * bug fix: as specified by AMOP, an error is signalled if a
3314 class-option appears multiple times in a DEFCLASS form. (reported
3316 * bug fix: RANDOM can be compiled when the compiler derives the type
3317 of its numeric argument as a disjoint set of small integers.
3318 (reported by Paul Dietz)
3319 * bug fix: starting a core saved with shared objects loaded when
3320 those objects are not available no longer causes threaded SBCL to
3321 hang. (reported by Sean Ross)
3322 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3324 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3325 argument, which must always be NIL. (reported by Kalle Niemitalo)
3326 * bug fix: printing 1.0d+23 no longer results in an error.
3327 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3328 * bug fix: structure slot setters preserve evaluation order. (thanks
3330 * fixed some bugs related to Unicode integration:
3331 ** RUN-PROGRAM can allow its child to take input from a Lisp
3332 stream. (reported by Stefan Scholl)
3333 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3334 locales. (reported by Ken Causey)
3335 * fixed some bugs revealed by Paul Dietz' test suite:
3336 ** INCF, DECF and REMF evaluate their place form as specified in
3338 ** FORMATTER expands ~{ ~} iteration directives with V or #
3339 parameters correctly.
3340 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3341 consequent uses no arguments correctly.
3342 ** the system has a partial understanding of the (COMPLEX RATIO)
3344 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3347 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3348 * new feature: a build-time option (controlled by the :SB-UNICODE
3349 keyword feature, enabled by default) for building the system with
3350 support for the entire 21-bit character space defined by the
3352 * new feature: the system now has rudimentary external-format
3353 support; the primary user-visible change at this time is that
3354 characters with the high bit set (such as lower-case-e-acute) will
3355 print correctly to a terminal in a UTF-8 environment.
3356 * minor incompatible change: BASE-CHAR no longer names a class;
3357 however, CHARACTER continues to do so, as required by ANSI.
3358 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3359 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3360 has been moved to the SB-EXT package (temporarily re-exported from
3362 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3363 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3365 * fixed bug #351: better error-handlind and reporting for malformed
3367 * fixed bug #350: bignum-printing is now more memory-efficient,
3368 allowing printing of very large bignums, eg. (expt 2 10000000).
3369 (reported by Bruno Haible)
3370 * fixed bug #302: better primitive-type selection for intersection
3372 * fixed bug #308: non-graphic characters now all have names, as
3373 required. (reported by Bruno Haible)
3374 * bug fix: redefining a class with different superclasses now correctly
3375 removes it from the direct-subclasses of its previous superclasses.
3376 (reported by David Morse)
3377 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3378 new value now works. (reported by Bruno Haible)
3379 * bug fix: correct canonicalization of multiple non-standard slot
3380 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3381 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3382 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3383 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3384 now exists, an signals an error.
3385 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3386 during macroexpansion for non-iteration variables as well. (reported
3387 by Bruno Haible for CMUCL)
3388 * bug fix: Cyclic structures and unprintable objects in compiler
3389 messages no longer cause errors. (reported by Bruno Haible)
3390 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3391 and READ-FROM-STRING all now return a primary value of NIL if
3392 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3393 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3394 (reported by Bruno Haible for CMUCL)
3395 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3396 do not designate a condition. (reported by Bruno Haible for
3398 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3399 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3400 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3401 permitting resolution in favour of any of the conflicting symbols.
3402 (reported by Bruno Haible for CMUCL)
3403 * bug fix: EQUAL compiler optimizations is less aggressive on
3404 strings which can potentially compare true despite having distinct
3405 specialized array element types.
3406 * bug fix: unit enumerations can be defined without dividing by
3407 zero. (thanks to Vincent Arkesteijn)
3408 * FORMAT compile-time argument count checking has been enhanced.
3409 (report from Bruno Haible for CMUCL)
3410 * a partial workaround for the bug 262: the compiler does not try to
3411 inline-expand a local function doing RETURN-FROM from a deleted
3412 BLOCK. (thanks to Peter Denno for the bug report and to David
3413 Wragg for the simple test case)
3414 * fixed some bugs revealed by Paul Dietz' test suite:
3415 ** RENAME-PACKAGE allows all package designators as new package
3417 ** constraint propagation and lambda variable substitution are
3418 more cautious in dealing with partially deleted code.
3419 ** compiler sometimes lost reoptimization passes.
3420 ** CERROR, given a condition as condition designator, passes its
3421 remaining arguments to the continue format control without
3423 ** Case-altering FORMAT directives work correctly on non-ASCII
3425 ** The REAL type specifier handles bounds outside the floating
3426 point ranges without signalling FLOATING-POINT-OVERFLOW.
3427 ** Functions with IR1-transformations can create intercomponent
3428 references to global functions.
3429 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3431 ** FORMAT ~R treats a nil value for its first parameter correctly.
3433 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3434 * enhancement: saving cores with foreign code loaded is now
3435 supported on x86/NetBSD and sparc/Linux in addition to the previously
3436 supported platforms.
3437 * bug fix: on some platforms repeated installations caused multiple
3438 copies of HTML documentation to be installed -- should not happen
3439 any more. (reported by Stefan Scholl)
3440 * bug fix: parsing self-recursive alien record types multiple times
3441 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3442 original patch by Helmut Eller for CMUCL)
3443 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3444 (thanks to Richard Kreuter)
3445 * bug fix: defining classes whose accessors are methods on existing
3446 generic functions in other (locked) packages no longer signals
3447 bogus package lock violations. (reported by François-René Rideau)
3448 * bug fix: special variables as DEFMETHOD parameters no longer have
3449 associated bogus type declarations. (reported by David Wragg and
3451 * bug fix: read-write consistency on streams of element-type
3452 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3453 * bug fix: redefiniton of the only method of a generic function with
3454 no DEFGENERIC no longer emits a full WARNING. In addition,
3455 redefinition of generic functions with no DEFGENERIC to an
3456 incompatible lambda list now signals an error. (thanks to Zach
3458 * bug fix: DEFGENERIC now works even when there's a function of the
3459 same name in an enclosing lexical environment. (thanks to Zach
3461 * fixed compiler failure, caused by instrumenting code during
3462 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3463 * optimization: added loop analysis and improved register allocation
3464 * fixed some bugs revealed by Paul Dietz' test suite:
3465 ** POSITION on displaced vectors with non-zero displacement
3466 returns the right answer.
3467 ** (SIMPLE-STRING) is a valid type specifier for sequence
3469 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3471 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3472 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3474 ** The justification version of the FORMAT ~< directive treats
3475 non-zero minpad parameter correctly.
3477 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3478 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3479 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3480 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3481 the supported interface.
3482 * new feature: Single-stepping of code compiled with DEBUG 2 or
3483 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3484 * new feature: saving cores with foreign code loaded is now
3485 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3486 Timothy Moore's work for CMUCL)
3487 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3488 parameters to * instead of NIL if no initform is supplied.
3489 (reported by Johan Bockgaard)
3490 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3491 correctly when FUNCALL appears as the car of the form. Note:
3492 despite this FUNCALL forms are not currently subject to
3493 compiler-macro expansion. (port of Raymond Toy's fix for the
3494 same from CMUCL, reported by Johan Bockgaard)
3495 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3496 (thanks for Teemu Kalvas)
3497 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3498 case instead of terminating the iteration (thanks for Julian
3499 Squires, Sean Champ and Raymond Toy)
3500 * bug fix: incorrect expansion of defgeneric that caused a style
3501 warning. (thanks for Zach Beane)
3502 * bug fix: slot accessor effective method computation works properly
3503 for classes with multiple non-standard applicable methods on
3504 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3505 * on x86 compiler supports stack allocation of results of LIST and
3506 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3507 CMUCL implementation by Gerd Moellmann)
3508 * fixed some bugs revealed by Paul Dietz' test suite:
3509 ** FORMAT strings with both the ~<~:;~> form of the justification
3510 directive and pretty-printing directives cause an error.
3512 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3513 * incompatible change: the internal functions
3514 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3515 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3516 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3517 instead of the old functions.
3518 * new feature: on platforms where "dladdr" is available foreign
3519 function names now appear in backtraces. (based on Helmut Eller's
3521 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3522 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3524 * documentation: ASDF manual is now distributed with SBCL.
3525 * bug fix: SBCL can now load its contributed modules with REQUIRE
3526 even if the system-provided entries have been removed from
3527 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3529 * bug fix: backtraces involving undefined functions or assembly
3530 routines are more informative. (thanks to Brian Downing)
3531 * bug fix: mutually referent alien structures now work correctly.
3532 (reported by Rick Taube)
3533 * bug fix: structures defined by WITH-ALIEN can be referred to
3534 within other definitions in the same WITH-ALIEN.
3535 * bug fix: division operators (MOD, TRUNCATE and the like) with
3536 constant zero divisors and integer dividends no longer generate
3538 * bug fix: provide default methods for INPUT-STREAM-P and
3539 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3540 * bug fix: improve the detection and resolution of MOP metacycles
3541 (where effective method computation depends on the generic function
3542 having its effective method computed). (reported by Bruno Haible)
3543 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3544 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3545 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3546 * bug fix: pathnames with relative directory components can be
3547 represented relative to default pathnames.
3548 * optimization: in taking the GCD of bignums, reduce the two bignums
3549 to approximately the same size (using Euclid's algorithm) before
3550 applying the more sophisticated binary GCD. (thanks to Juho
3552 * optimization: COUNT on bitvectors now operates word-at-a-time.
3553 * optimization: ASH with a positive, but not necessarily constant,
3554 (leftwards) shift, when in a modular context, is compiled to a
3556 * fixed some bugs revealed by Paul Dietz' test suite:
3557 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3558 if the corresponding argument is NIL.
3559 ** FORMAT directives accepting a minpad parameter treat negative
3561 ** literal commas as character parameters to FORMAT directives are
3563 ** literal spaces directly after ~<Newline> directives within a
3564 format-logical-block (~:< ~@:>) do not induce :FILL-style
3565 conditional newlines.
3566 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3567 as specified: it no longer includes conditional newlines).
3568 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3570 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3571 :PER-LINE-PREFIX argument does not evaluate to a string.
3573 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3574 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3575 the manual for details; for now, package locks can be disabled by
3576 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3577 if no major problems are found then it is likely that they will be
3578 compiled in unconditionally.
3579 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3580 unsupported operators on all platforms. To load a shared library
3581 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3582 object file, link it into a shared library outside of SBCL and
3583 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3585 * bug workaround: ROOM T and the GC were not working together
3586 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3587 reporting facility aren't preserved. That reporting has been
3588 disabled, so now until and unless someone figures out how to make it
3589 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3590 * minor incompatible change: as threatened around sbcl-0.8.0, the
3591 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3592 The symbols are also exported from SB-PCL for backwards
3593 compatibility, but more so than before SB-PCL should be treated as
3594 an implementation-internal package.
3595 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3597 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3598 It is known as of this release not to work on the Alpha, however.
3599 * fixed bug #167: errors signalled due to illegal syntax in method
3600 bodies are now more legible.
3601 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3602 designators and can hence be used with TYPEP.
3603 * fixed bug #333: CHECK-TYPE now ensures that the type error
3604 signalled, if any, has the right object to be accessed by
3605 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3606 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3607 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3609 * fixed bug #334: programmatic addition of slots using specialized
3610 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3611 and :ALLOCATION :CLASS slots.
3612 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3613 float exponents. (rereported by Peter Seibel)
3614 * fixed a bug: #\Space (and other whitespace characters) are no
3615 longer considered to be macro characters in standard syntax by
3616 GET-MACRO-CHARACTER.
3617 * fixed bug: initialization of condition class metaobjects no longer
3618 causes an instance of the condition to be created. (reported by
3620 * fixed bug: it is now possible to have slots such that
3621 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3622 description is neither :INSTANCE nor :CLASS.
3623 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3624 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3625 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3626 non-standard SLOT-DEFINITION-ALLOCATION values.
3627 * fixed bugs: various race conditions handling exiting threads.
3628 CL-PPCRE's thread torture test now passes.
3629 * fixed arguably-a-bug: GC time proportional to number of threads in
3630 system even when most of them are idle
3631 * optimization: improved performance of BIT and SBIT on bit-vectors.
3632 * .fasl file incompatibility: The fasl file version number has
3633 been incremented because of changes associated with package locks.
3635 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3636 * minor incompatible change: the system no longer provides
3637 optimization hints (conditions which are TYPEP
3638 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3639 mode; these hints are still emitted when higher SPEED optimization
3641 * new contrib module: a sampling profiler (profiling by statistical
3642 sampling, rather than by instrumenting functions) is available as
3643 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3644 * the behaviour of the standard function ED is now customizeable by
3645 third parties through a hook variable: see ED's documentation
3646 string for information on the protocol.
3647 * the compiler no longer emits efficiency notes for (FUNCALL X)
3648 when the type of X is uncertain under default optimization
3650 * fixed bug 276: mutating a binding of a specialized parameter to a
3651 method to something that is not TYPEP the specializer is now
3653 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3654 exhibit the required behaviour on the x86 platform. (thanks to
3655 Peter van Eynde, Eric Marsden and Bruno Haible)
3656 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3657 even for difficult arguments. (reported by Peter Graves)
3658 * fixed bug 141a: the backquote printer now descends quoted
3660 * fixed another bug in backquote printing: no more destructive
3661 modification of the form's list structure. (reported by Brian
3663 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3664 move between its address being taken and the call to
3665 interrupt_thread, fixing a crashing race condition.
3666 * the SB-POSIX contrib implementation has been adjusted so that it
3667 no longer exhibits ridiculously poor performance when constructing
3668 instances corresponding to C structs.
3670 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3671 * minor incompatible change: the sb-grovel contrib now treats C
3672 structures as alien (in the sense of SB-ALIEN) objects rather than
3673 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3674 has implications for memory management of client code
3675 (sb-grovel-returned objects must now be manually managed) and for
3676 type safety (alien objects now have full types).
3677 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3678 used to control emission of compiler diagnostics, rather than the
3679 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3680 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3681 quality should be considered deprecated.
3682 * install.sh now installs the user manual as well
3683 * (not quite a new documentable feature, but worth considering in
3684 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3685 beginnings of a semantically meaningful condition hierarchy is
3686 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3688 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3689 designator as the defaults argument.
3690 * fixed bug: Displaced arrays whose displaced-to array has become
3691 too small now cause ARRAY-DIMENSION to signal an error, providing
3692 for safer bounds-checking. (reported by Bruno Haible)
3693 * fixed bug: DEFCLASS slot definitions with identical :READER and
3694 :WRITER names now signal a reasonable error. (reported by Thomas
3696 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3698 * fixed bug: Invalid slot specification errors now print correctly.
3699 (thanks to Zach Beane)
3700 * fixed bug 320: Shared to local slot value transfers in class
3701 redefinitions now happen corrently from superclasses as
3702 well. (reported by Bruno Haible)
3703 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3705 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3706 improper lists correctly. (reported by Bruno Haible)
3707 * fixed bug 313: source-transform for <fun-name> was erroneously
3708 applied to a call of a value of a variable with name <fun-name>.
3709 (reported by Antonio Menezes Leitao)
3710 * fixed bug 307: The obsolete instance protocol ensures that
3711 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3712 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3713 remove dead unknown-values globs from the middle of the stack.
3714 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3715 easier to resume long computations after using *BREAK-ON-SIGNALS*
3716 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3717 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3718 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3719 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3720 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3721 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3723 * fixed a (fairly theoretical) bug in string printing: if
3724 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3725 does not have array-element-type equal to the most general string
3727 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3728 function name. (thanks to Nikodemus Siivola)
3729 * fixed bug: compile-time format string checker failed on
3730 non-closed ~{. (reported by Thomas F Burdick)
3731 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3732 don't warn on legal loop code involving more than one aggregate
3733 boolean. (thanks to Nikodemus Siivola)
3734 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3735 in keyword position to MAKE-PACKAGE was not being reported as
3737 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3738 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3740 * fixed bugs 280 and 312: the checking for multiple definitions in a
3741 file is less likely to become confused by uses of inline
3743 * fixed bug: the #S reader macro performs the keyword coercion
3744 specified for slot names. (reported by Kalle Niemitalo)
3745 * fixed bug: lambda lists may contain symbols whose names start with
3746 & but are not lambda-list-keywords; their occurrence triggers a
3748 * fixed bug 321: define-method-combination argument lambda lists do
3749 not cause invalid code to be generated when &optional or &aux
3750 variables have default values. (reported by Bruno Haible)
3751 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3752 have CLOS classes; this appears also to have fixed reported
3753 instability in stack exhaustion detection.
3754 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3755 MUFFLE-WARNING when no associated restart is present is now
3757 * optimization: rearranged the expansion of various defining macros
3758 so that each expands into only one top-level form in a
3759 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3761 * optimization: used a previously little-used slot in symbols to
3762 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3764 * fixed some bugs revealed by Paul Dietz' test suite:
3765 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3767 ** Fixed an optimization bug related to inheritance of initforms
3768 from local to shared slots.
3769 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3770 ** CAST optimizer forgot to flush argument derived type.
3771 ** print/read consistency on floats is now orders of magnitude
3772 more likely. (thanks also to Bruno Haible for a similar report
3774 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3775 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3776 for objects of type REAL. Make it so.
3777 ** SXHASH is specified (infelicitously) to respect similarity,
3778 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3779 it so. (thanks to Markus Ziegler)
3780 ** on the Alpha, the compiler succeeds in compiling functions
3781 returning a known number of arguments greater than 63.
3782 ** fixed handling of invalid NIL arguments in keyword position
3784 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3786 ** provided a readably-printable representation for RANDOM-STATE
3788 ** ensured that pathnames, where they have a namestring, always
3789 print using #P"..." syntax.
3791 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3792 * Support for the forthcoming 2.0 version of the NetBSD kernel
3793 running on x86 hardware has been added. (thanks to Perry
3794 E. Metzger most immediately, and others for their past work)
3795 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3796 current release version; SBCL's OpenBSD support had been broken
3797 since about the time of OpenBSD's switch to ELF binary format.)
3798 * [placeholder for DX summary]
3799 ** user code with &REST lists declared dynamic-extent, under high
3800 speed or space and low safety and debug optimization policy.
3801 * The manual has been converted to Texinfo format and the debugger
3802 chapter from the cmucl manual has been added.
3803 * A facility has been added to extract documentation strings from
3804 sbcl and store them as Texinfo-formatted snippets for inclusion in
3805 the manual (via Texinfo's @include directive)
3806 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3807 the test case to Dave Roberts)
3808 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3809 pointers. (reported by Sean Ross)
3810 * bug fix: PROFILE output is printed nicely even for large numerical
3811 values. (thanks to Zach Beane)
3812 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3813 greater than 32 handle EOF correctly.
3814 * bug fix: on X86 an immediate argument of the IMUL instruction is
3815 correctly printed in disassembly. (thanks to Lutz Euler)
3816 * bug fix: class slots in redefined classes preserve their old
3817 values. (thanks to Bruno Haible and Nikodemus Siivola)
3818 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3819 succeeds. (reported by Marco Baringer)
3820 * fixed some bugs revealed by Paul Dietz' test suite:
3821 ** READ-SEQUENCE now works on ECHO-STREAMs.
3822 ** RATIONALIZE works more according to its specification. (thanks
3825 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3826 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3827 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3828 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3829 should matter to you only if you rebind the printer control
3830 variables and then find you want different bindings in the
3831 debugger than in the ordinary execution of your program.)
3832 * The runtime build system has been tweaked to support building
3833 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3834 assembler and linker. (thanks to Nikodemus Siivola)
3835 * Unbound, undefined, undeclared variables now trigger full
3836 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3837 more often programmer error than deliberate exploitation of undefined
3839 * optimization: the hash algorithm for strings has changed to one
3840 that is less vulnerable to spurious collisions. (thanks to Juho
3842 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3843 needless bounds checking. (thanks to Juho Snellman)
3844 * optimization: implemented multiplication as a modular
3845 (UNSIGNED-BYTE 32) operation on the PPC backend.
3846 * fixed some bugs revealed by Paul Dietz' test suite:
3847 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3849 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3850 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3851 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3853 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3855 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3857 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3858 their output stream on EOF from read.
3859 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3860 have been read to end-of-file.
3861 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3863 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3864 description of determination of which consecutive characters
3866 ** Printing the "Space" character with escaping on now yields "#\\ ",
3867 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3868 ** Reading floating-point numbers with *READ-BASE* set to a number
3869 less than 10 works correctly.
3870 ** Reading floating-point numbers with *READ-BASE* set to a number
3871 more than 10 works correctly.
3872 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3873 the readtable currently in effect.
3875 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3876 * minor incompatible change: parsing of namestrings on a physical
3877 (Unix) host has changed; numbers after the final #\. in a
3878 namestring are no longer interpreted as a version field. This is
3879 intented to be largely invisible to the user, except that the
3880 meaning of the namestring "*.*.*" has changed: it now refers to a
3881 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3882 should usually be replaced by
3883 (make-pathname :name :wild :type :wild :version :wild)
3884 with the added benefit that this is more likely to be portable.
3885 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3886 option to OPEN now signals an error if the file being opened
3887 exists; this may have an impact on existing code.
3888 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3889 signals received, on the PowerPC platforms (both Linux and
3890 Darwin). (thanks to Pierre Mai for pointing out the location of
3892 * several fixes on OS X: The system now builds and runs cleanly on
3893 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3894 (thanks to Brian Mastenbrook)
3895 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3896 second-resolution: integer multiples of 1/3600 between -24 and 24.
3897 (thanks to Vincent Arkesteijn)
3898 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3899 type when called with 1 argument; PEEK-CHAR checked type of
3900 PEEK-TYPE only after having read first character from a
3901 stream. (reported by Peter Graves)
3902 * bug fix: the garbage collector now has much better locality
3903 behaviour, and in particular no longer treats all memory as being
3904 exhausted when many small objects point to each other in a deeply
3906 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3907 recognized as being TYPEP their class.
3908 * bug fix: the PUSHNEW documentation string has been corrected.
3909 (thanks to Vincent Arkesteijn)
3910 * bug fix: defaulting of the value for the last of an atypically
3911 large number of multiple values being bound was not being
3912 performed correctly on the Alpha or PPC platforms
3913 * optimization: implemented multiplication as a modular
3914 (UNSIGNED-BYTE 32) operation on the x86 backend.
3915 * optimization: SEARCH on simple-base-strings can now be open-coded.
3916 (see also contrib/compiler-extras.lisp for inspiration for
3917 teaching the compiler about the Boyer-Moore algorithm).
3918 * value, returned by MAX (and MIN) called with several EQUALP, but
3919 not EQL, arguments now does not depend on compiler settings.
3920 * fixed some bugs revealed by Paul Dietz' test suite:
3921 ** in stack analysis liveness information is propagated from
3922 non-local entry points.
3923 ** pathwise CAST removing failed when the CAST node did not start
3925 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3926 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3928 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3929 host is already defined.
3930 ** RENAME-FILE works on streams instead of signalling an internal
3932 ** PEEK-CHAR uses the current readtable when determining whether
3933 or not a character is whitespace.
3934 ** MERGE-PATHNAMES handles the case when the pathname does not
3935 specify a name while the default-pathname specifies a version.
3936 ** Pathnames now stand a better chance of respecting print/read
3938 ** Attempting to use standardized file system operators with a
3939 pathname with invalid :DIRECTORY components signals a
3941 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3943 ** DIRECTORY on logical pathnames is more correct.
3944 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3945 signal a TYPE-ERROR if their argument is not a stream.
3946 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3947 designator argument does not designate a stream.
3948 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3949 examining the synonym.
3950 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3952 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3953 element-type larger than ([UN]SIGNED-BYTE 32).
3955 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3956 * When built with the :SB-FUTEX feature, threaded builds now take
3957 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3958 for faster/more reliable mutex and condition variable support.
3959 * Incompatible change (but one you probably shouldn't have been using
3960 anyway): the interface and code for arbitrating between multiple
3961 threads in the same user session has been redesigned.
3962 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3963 error when called without an explicit environment argument.
3964 (thanks to Nikodemus Siivola)
3965 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3966 confused about their position. (thanks to Adam Warner and Gerd
3968 * bug fix: Pretty printing backquoted forms with unquotations in the
3969 argument list position of various code constructs such as LAMBDA
3970 now works correctly. (reported by Paul Dietz)
3971 * bug fix: Pretty printing unquotations no longer loses all
3972 stream position information.
3973 * optimization: performance of string output streams is now less
3974 poor for multiple small sequence writes.
3975 * optimization: performance of CSUBTYPEP in the presence of complex
3976 expressions involving CONS and NOT many times has been improved.
3977 (reported by Paul Dietz)
3978 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3980 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3981 streams for the REPL, for the debugger, and so on. (thanks to
3983 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3984 * fixed some bugs revealed by Paul Dietz' test suite:
3985 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3986 is ignored if it is too small, rather than propagating through
3987 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3988 ** extremely complex negations of CONS types were not being
3989 sufficiently canonicalized, leading to inconsistencies in
3991 ** VALUES tranformer lost derived type.
3993 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3994 * fixed a bootstrapping bug: the build process no longer assumes
3995 that the various BOOLE-related constants have the same value in
3996 host and target lisps. (noted by Paul Dietz' test suite on an
3997 SBCL binary built from CLISP)
3998 * The system can now be dynamically linked on the MIPS platform,
3999 which enables dynamic loading of foreign code from Lisp. (thanks
4000 to Ralf Baechle for discussions on the MIPS ABI)
4001 * The system now records debugging information for its own source
4002 files in a filesystem-position-independent manner, relative to
4003 the "SYS" logical host.
4004 * fixed a compiler bug: MV-LET convertion did not check references
4005 to the "max args" entry point. (reported by Brian Downing)
4006 * tweaked disassembly notes to be less confident about proclaiming
4007 some instruction as an LRA. (thanks to Brian Downing)
4008 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4009 now each have their own history, command character, and other
4010 characteristics. (thanks to David Lichteblau)
4011 * fixed some bugs revealed by Paul Dietz' test suite:
4012 ** compiler failure in compiling LOGAND expressions including a
4014 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4015 shift greater than 32.
4016 ** FLUSH-DEST did not mark blocks for type check regeneration.
4017 ** HANDLER-CASE failed to accept declarations in handler clauses
4018 in some circumstances.
4020 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4021 * New code in contrib/sb-introspect (still probably not entirely
4022 stable yet) provides some support for smart Lisp development
4023 environments like SLIME.
4024 * The conditions signalled for errors occurring when loading .fasl
4025 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4026 in a way which should help ASDF recover gracefully.
4027 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4028 stuff has been cleaned up. If you code contrib/ stuff, this might
4029 affect you, and you can look at contrib/README, contrib/STANDARDS,
4030 and/or the 0.8.4.27 diff to check.
4031 * In full calls the compiler now does not generate checks for declared
4032 argument types for all arguments.
4033 * various threading fixes
4034 ** and some experimental patches which didn't make it into
4035 the main tree for this release, but which are shipped in
4036 contrib/experimental-thread.patch as a possible fix for some
4037 failures (deadlock, spinning...) in GC-intensive multithreaded
4039 * fixed PPC build problem (source code incompatibility of different
4040 library versions): added offsetof() hackery which attempts to divine
4041 where glibc maintainers put uc_mcontext today
4042 * fixed bug 282: compiler does not trust type assertions while passing
4043 arguments to a full call.
4044 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4045 &OPTIONAL VALUES type parameter.
4046 * fix bug 214: algorithm for noting rejected templates is now more
4047 similar to that of template seletion. (also reported by rydis on
4049 * fixed bug 141b: printing backquoted information readably and prettily
4050 inserts a space where necessary.
4051 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4052 (CHARACTER 10) are now reported as errors, rather than propagated
4053 as unknown types. (reported by piso on #lisp)
4054 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4055 with values NIL and :ERROR. (thanks to Milan Zamazal)
4056 * fixed bug 191c: CLOS now does proper keyword argument checking as
4057 described in CLHS 7.6.5 and 7.6.5.1.
4058 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4059 longer raise an error; further, using a list as a for-as-arithmetic
4060 counter now raises a meaningful error.
4061 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4062 now understood by sequence creation functions such as MAKE-SEQUENCE
4064 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4065 a STRING-INPUT-STREAM.
4066 * compiler enhancement: SIGNUM is now better able to derive the type
4068 * type declarations inside WITH-SLOTS are checked. (reported by
4070 * fixed some bugs revealed by Paul Dietz' test suite:
4071 ** incorrect optimization of TRUNCATE for a positive first
4072 argument and negative second.
4073 ** compiler failure in let-convertion during flushing dead code.
4074 ** compiler failure while deriving type of TRUNCATE on an
4075 interval, containing 0.
4076 ** ASH of a negative bignum by a negative bignum count now returns
4078 ** intersection of CONS types now canonicalizes properly, fixing
4079 inconsistencies in SUBTYPEP.
4081 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4082 * incompatible change: The --disable-debugger command line
4083 option now clobbers the debugger at a more fundamental
4084 level, by redefining #'INVOKE-DEBUGGER instead of by
4085 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4086 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4087 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4088 enter the debugger REPL and then suffer recursive errors
4089 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4090 while under the new system, BREAK in --disable-debugger mode
4091 terminates the system just as an unhandled error would.
4092 * fixed compiler performance when processing loops with a step >1;
4093 * bug fix: DOCUMENTATION now retrieves generic function
4094 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4095 support has been systematized, and now supports the methods
4096 specified by ANSI, along with a default method and a method for
4097 slot documentation. (reported by Nathan Froyd)
4098 * bug fix: effective methods associated with a generic function are
4099 no longer cached over a change of that generic function's method
4100 combination. (reported by Andreas Fuchs)
4101 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4102 names a non-existent directory. (thanks to Andreas Fuchs)
4103 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4104 the PPC platform, lead to stack corruption; this has been fixed.
4105 (reported by Rainer Joswig)
4106 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4107 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4108 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4109 arithmetic in general, is now much more reliable on the PPC
4111 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4112 platform now returns the right answer.
4113 * optimization: restored some effective method precomputation in
4114 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4115 precomputation is now tunable.
4116 * optimization: compiler-internal data structure use has been
4117 reviewed, and changes have been made that should improve the
4118 performance of the compiler by about 20%.
4119 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4120 simple-base-strings and simple-bit-vectors is improved.
4121 * optimization: the optimization of 32-bit logical and arithmetic
4122 functions introduced in version 0.8.3 on the x86 has been
4123 implemented on the mips, ppc and sparc platforms; an
4124 implementation of the same facility, but for 64-bit arithmetic,
4125 has been added for the alpha.
4126 * microoptimization: the compiler is better able to make use of the
4127 x86 LEA instruction for multiplication by constants.
4128 * bug fix: in some situations compiler did not report usage of
4129 generic arithmetic in (SPEED 3) policy.
4130 * bug 145b fix: compiler used wrong type specifier while converting
4131 MEMBER-types to numeric.
4132 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4134 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4135 index argument now works properly on the Alpha platform.
4136 * bug fix: floating point exception treatment on the Alpha platform
4138 * bug fix: FILE-POSITION works much better on string input and
4139 output streams. (thanks to Nikodemus Siivola)
4140 * bug fix: many threading/garbage collection symptoms sorted.
4141 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4142 might be pseudo-atomic.
4143 * internal change: Stopping for GC is now done with signals not
4144 ptrace. GC is now done in whichever thread wanted it, instead of
4146 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4148 * bug fix: result form in DO is not contained in the implicit
4150 * incompatible change: ICR structure is changed; the value part of
4151 CONTINUATION is now called LVAR; corresponding functions are
4152 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4153 * added type deriver for ISQRT (thanks to Robert E. Brown).
4154 * bug fix: better support for loading from the command line when an
4155 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4157 * fixed some bugs revealed by Paul Dietz' test suite:
4158 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4159 ** ROUND and FROUND now give the right answer when given very
4160 small float arguments.
4161 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4163 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4164 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4165 ** LCM should return a non-negative integer.
4166 ** PARSE-INTEGER returned the index of a terminator instead of the
4167 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4168 ** PARSE-INTEGER returned an incorrect index being applied to a
4170 ** LCM with two arguments of 0 returns 0 rather than signalling
4172 ** unsigned addition of a 32-bit constant with the high bit set no
4173 longer causes an internal compiler error on the x86.
4174 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4175 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4176 with negative last argument.
4177 ** byte specifiers with zero size and position no longer cause
4178 an error during type derivation.
4179 ** bignum multiplication on the Alpha platform now returns the
4181 * porting: The system now builds on SuSE AMD64, although it still
4182 generates a 32-bit binary.
4183 * .fasl file incompatibility: The fasl file version number has
4184 been incremented (because of the changes to internal compiler
4185 data structures referred to above).
4187 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4188 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4189 more accurately, on the Darwin kernel running on PowerPC hardware.
4190 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4191 * Compiler code deletion notes now signal a condition of type
4192 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4193 an associated MUFFLE-WARNING restart.
4194 * The compiler now performs limited argument count validation of
4195 constant format strings in FORMAT, and where appropriate in ERROR,
4196 CERROR and WARN. (thanks to Gerd Moellmann)
4197 * New ASDF-INSTALL contrib can be used for automatic download and
4198 installation of third-party Lisp code from CCLAN or other sites
4200 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4201 which forces another thread to execute a function supplied by the
4203 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4204 now accept and act upon their :ELEMENT-TYPE keyword argument.
4205 (reported by Martin Atzmueller, Edi Weitz)
4206 * bug fix: FILE-POSITION now accepts position designators up to
4207 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4208 is the greater. (thanks to Patrik Nordebo)
4209 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4210 Kalle Olavi Niemitalo)
4211 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4212 printable. (reported by Eric Marsden)
4213 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4214 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4215 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4216 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4217 (thanks to Stig Sandoe)
4218 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4219 UNREAD-CHAR now correctly includes the unread character in the
4220 target sequence. (thanks to Gerd Moellmann)
4221 * bug fix in threaded builds: the system can now be suspended and
4222 resumed by shell job control with minimal disruption.
4223 * bug fixes in times and timezones >2038AD
4224 * better handling of "where is GNU make?" problem in build scripts
4225 (thanks to Nikodemus Siivola)
4226 * new optimization: inside a named function any reference to a
4227 function with the same name is considered to be a self-reference;
4228 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4229 optimization quality.
4230 * new optimization on x86: logical functions and + now have
4231 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4232 used when the result is truncated to 32 bits.
4233 * VALUES declaration is partially enabled.
4234 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4235 * fixed some bugs revealed by Paul Dietz' test suite:
4236 ** The system now obeys the constraint imposed by
4237 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4238 types form a lattice under type intersection.
4239 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4240 ** ASSOC now ignores NIL elements in an alist.
4241 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4242 and (1+ MOST-POSITIVE-FIXNUM) answers.
4243 ** The addition of a method with invalid qualifiers to a generic
4244 function does not cause an error to be signalled immediately;
4245 a warning is signalled, and the error is generated only on
4246 calling the generic function.
4247 * changed .fasl file version number, in part to add type codes for
4248 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4249 obscure ANSI requirements
4251 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4252 * fixed bug 148: failure to inline-expand a local function left
4253 garbage, confusing the compiler.
4254 * fixed bugs 3cd: structure slot readers perform type check if the
4255 slot can have an invalid value (i.e. it is either not initialized
4256 or can be written with a less specific slot writer).
4257 * bug fix: the compiler now traps array references to elements off
4258 the end of an array; previously, the bounds checking in some
4259 circumstances could go off-by-one.
4260 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4262 * type declarations for array element types now obey the description
4263 on the CLHS page "Declaration TYPE", as per discussions on
4264 sbcl-help around 2003-05-08. This means that a declaration
4265 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4266 declaration, all references to BAR will be asserted or assumed
4267 (with THE, so dependent on compiler policy) to involve objects of
4268 type FOO. Note that no such declaration is implied in
4269 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4270 * declared types of functions from the "Conditions"
4271 chapter. (reported by Paul Dietz)
4272 * bug fix: CERROR accepts a function as its first argument.
4273 * bug fix: NTH an NTHCDR accept a bignum as index
4274 arguments. (reported by Adam Warner)
4275 * optimization: character compare routines now optimize comparing
4276 against a constant character. (reported by Gilbert Baumann)
4277 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4278 argument now works properly on the MIPS platform.
4279 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4280 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4281 declared to have a functional type, does not cause an error
4283 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4284 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4285 * fixed bug: if last continuation of a deleted block has a
4286 destination, this destination should be deleted too. (reported by
4288 * fixed a bug in the bootstrap process: the host compiler's values
4289 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4290 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4291 test case from Patrik Nordebo)
4292 * improved the ability of the disassembler on the PPC platform to
4293 provide helpful disassembly notes.
4294 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4295 the class in more cases than previously.
4296 * bug fix: FILE-POSITION now understands :START and :END for
4297 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4298 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4299 8) data. (thanks to David Lichteblau)
4300 * bug fix: it is possible to add a method to a generic function
4301 without lambda list.
4302 * bug fix: reader failed to signal END-OF-FILE inside an
4303 object representation. (reported by Nikodemus Siivola)
4304 * fixed some bugs revealed by Paul Dietz' test suite:
4305 ** LAST and [N]BUTLAST should accept a bignum.
4306 ** condition slot accessors are methods.
4307 ** (VECTOR NIL) is a subtype of STRING.
4309 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4310 * minor incompatible change: some nonsensical specialized lambda
4311 lists (used in DEFMETHOD) which were previously ignored now signal
4313 * minor incompatible change: the system is now aware of the types of
4314 variables in the COMMON-LISP package, and will signal errors for
4315 most violations of these type constraints (where previously they
4316 were silently accepted).
4317 * minor incompatible change: COMPILE-FILE now uses the freedom
4318 afforded (ANSI 3.2.2.3) to use derived function types for
4319 functions defined in the same file. This also permits the system
4320 to warn on static type mismatches and function
4321 redefinition. (Currently it does not work with high DEBUG level.)
4322 * minor incompatible change: VALUES declaration is disabled.
4323 * When issuing notes, the compiler now signals a condition of type
4324 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4325 restart for use in user handlers. It is expected that the
4326 COMPILER-NOTE condition will eventually become a condition
4327 supertype to a hierarchy of note types, which will then be
4328 handleable in a similar fashion. However, at the moment, no such
4329 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4330 but it's an implementation detail, not a classification for the
4332 * Changes in type checking closed the following bugs:
4333 ** type checking of unused values (192b, 194d, 203);
4334 ** template selection based on unsafe type assertions (192c, 236);
4335 ** type checking in branches (194bc).
4336 * A short form of VALUES type specifier has ANSI meaning (it has
4337 increased the number of situations when SBCL cannot perform type
4339 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4340 keywords or constants is permissible.
4341 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4342 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4343 classes. (thanks to Antonio Martinez)
4344 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4345 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4346 argument to a pretty-print stream. Instead, it leaves any such
4347 operations to DESCRIBE-OBJECT methods.
4348 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4350 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4351 lambda lists. (thanks to David Lichteblau)
4352 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4353 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4354 (thanks to Gerd Moellmann)
4355 * fixed bug 246: increased compilation speed of long
4356 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4358 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4360 * DEFCONSTANT now throws a condition of type
4361 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4362 constant to a non-EQL value; CONTINUE and ABORT restarts
4363 respectively change and preserve the value.
4364 * fixed bug 63: The code walker, part of the implementation of CLOS,
4365 is now better at handling symbol macros.
4366 * bug fix: There is no longer an internal implementation type named
4367 CL:LENGTH. (reported by Raymond Toy)
4368 * bug fix: In macro-like defining macros/special operators the
4369 implicit block does not enclose the lambda list.
4370 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4371 enclosed in parentheses) are not suitable as type specifiers, and
4372 their use properly signals an error now.
4373 * bug fix: An argument count mismatch for a type specifier in code
4374 being compiled no longer causes an unhandled error at compile
4375 time, but signals a compile-time warning.
4376 * fixed simple vector readable printing
4377 * bug fix: DESCRIBE takes more care over whether the class
4378 precedence list slot of a class is bound before accessing it.
4379 (reported by Markus Krummenacker)
4380 * bug fix: FORMATTER can successfully compile pretty-printer format
4381 strings which use variants of the ~* directive inside.
4382 * bug fix: SEARCH now applies its TEST predicate to the elements of
4383 the arguments in the correct order. (thanks to Wolfhard Buss)
4384 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4385 in type inference. (thanks to Robert E. Brown)
4386 * bug fix: Reading in symbols with an explicit package name of ""
4387 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4388 * fixed some bugs revealed by Paul Dietz' test suite:
4389 ** NIL is now allowed as a structure slot name.
4390 ** Arbitrary numbers, not just REALs, are allowed in certain
4391 circumstances in LOOP for-as-arithmetic clauses.
4392 ** Multiple class redefinitions before slot access no longer
4393 causes a type error.
4394 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4395 association between the name and a class.
4396 ** Generic functions with non-standard method-combination and over
4397 five methods all of which return constants no longer return NIL
4398 after the first few invocations. (thanks to Gerd Moellmann)
4399 ** CALL-NEXT-METHOD with no arguments now passes the original
4400 values of the arguments, even in the presence of assignment.
4401 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4403 ** DISASSEMBLE works with closures and funcallable instances.
4404 ** ADD-METHOD now returns the generic function, not the new method.
4405 ** FIND-METHOD signals an error if the lengths of the specializers
4406 is incompatible with the generic function, even if the ERRORP
4408 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4409 which its argument is a member.
4410 ** DEFCLASS only redefines the class named by its class-name
4411 argument if that name is the proper name of the class;
4412 otherwise, it creates a new class.
4413 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4414 of the UNBOUND-SLOT condition to the name of the slot.
4415 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4416 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4417 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4418 SLOT-MAKUNBOUND in the specified fashion.
4420 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4421 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4422 cross-compilation host. As a consequence, we can now bootstrap our
4423 way up to SBCL starting with a bare gcc toolchain and human-readable
4424 source code (first the source to CLISP, then the source to SBCL).
4425 * A contributed module containing a partial implementation of the
4426 simple-streams interface has been included. (thanks to Rudi
4428 * A contributed module implementing the RFC1321 Message Digest
4429 Algorithm, known as MD5, has been included.
4430 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4431 no longer has any effect, as the code controlled by this feature
4432 has been deleted. (As far as we know, no-one has ever built using
4433 this feature, and its semantics were confused in any case).
4434 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4435 work on conditions (as required by the ANSI specification),
4436 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4437 expected behaviour on conditions. Users should note, however,
4438 that such behaviour is not required by the ANSI specification,
4439 and so use of this behaviour may render their code unportable.
4440 * fixed some bugs revealed by Paul Dietz' test suite:
4441 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4443 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4444 ** SXHASH on condition objects no longer returns NIL.
4445 ** :ALLOCATION :CLASS slots are better treated; their values are
4446 updated on class redefinition, and initforms inherited from
4447 superclasses are applied.
4448 ** REMOVE-METHOD returns its generic function argument even when
4449 no method was removed.
4450 ** SHARED-INITIALIZE now initializes the values of the requested
4451 slots, including those with :ALLOCATION :CLASS.
4452 ** ALLOCATE-INSTANCE now works on structure classes defined via
4453 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4455 ** SLOT-EXISTS-P now works on conditions, as well as structures
4457 ** MAKE-LOAD-FORM now has the required methods on
4458 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4459 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4460 keyword, and now implements the SLOT-NAMES argument.
4461 ** methods with &OPTIONAL arguments no longer allow too many
4462 arguments to be passed in the call without error.
4463 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4464 option is consistent with the required arguments of the generic
4465 function lambda list.
4466 * bug fix: REQUIRE accepts a string designator. (Thanks to
4468 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4469 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4470 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4471 * bug fix: The compiler now checks for duplicated variables in macro
4473 * bug fix: SETQ on globals returns the correct value.
4474 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4475 not a COMPILER-ERROR (followed by some other strange error on
4476 choosing the CONTINUE restart).
4477 * bug fix: make.sh and friends are now more consistent in the way that
4478 they look for GNU "make".
4480 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4481 * experimental native threads support (on x86 Linux >=2.4 only).
4482 This is not compiled in by default: you need to add :SB-THREAD to
4483 the target features. See the "Beyond ANSI" chapter of the manual
4485 * fix for longstanding nonANSIism: The old distinction between
4486 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4487 The return value from CL:FIND-CLASS is now a CLOS class, and
4488 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4489 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4490 * An interface to the MetaObject Protocol, as described in Kiczales,
4491 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4492 MIT Press, 1991, is available from the SB-MOP package.
4493 * incompatible change: the SB-PCL package should now be considered
4494 a private implementation detail, and no longer a semi-private MOP
4496 * minor incompatible change: due to rearrangement for threads, the
4497 control stack and binding stack are now allocated at arbitrary
4498 addresses instead of being hardcoded per-port. Users affected by
4499 this probably have to be doing advanced things with shared
4500 libraries, and will know who they are.
4501 * minor incompatible change: Previously, all --eval forms used were
4502 processed with READ before any of them were processed with EVAL.
4503 Now each --eval form is processed with both READ and EVAL before
4504 the next --eval form is processed. (Thus package operations like
4505 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4506 work as the user might reasonably expect.)
4507 * minor incompatible change: *STANDARD-INPUT* is now only an
4508 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4510 * minor incompatible change: Y-OR-N-P is now character-oriented,
4511 not line oriented. Also, YES-OR-NO-P now works without errors.
4512 (thanks to Antonio Martinez)
4513 * sb-aclrepl module improvements: an integrated inspector, added
4514 repl features, and a bug fix to :trace command.
4515 * Known functions, which cannot be open coded by the backend, are
4516 considered to be able to check types of their arguments. (fixing
4517 a bug report by Nathan J. Froyd)
4518 * fixed a bug in computing method discriminating functions: It is
4519 now possible to define methods specialized on classes which have
4520 forward-referenced superclasses. (thanks to Gerd Moellmann)
4521 * fixed evaluation order in optional entries (reported by Gilbert
4523 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4524 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4525 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4526 required-by-AMOP NAME argument, as well as CLASS and
4527 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4528 * fixed bug 20: DEFMETHOD can define methods using names that are
4529 not the proper names of classes to designate class specializers.
4530 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4531 Unix file descriptors, instead of blowing up. (thanks to Antonio
4533 * Garbage collection refactoring: user-visible change is that a
4534 call to the GC function during WITHOUT-GCING will not do garbage
4535 collection until the end of the WITHOUT-GCING. If you were doing
4536 this you were probably losing anyway.
4537 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4538 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4539 TYPEP the latter but not the former.
4540 * The compiler issues a full WARNING for calls to undefined functions
4541 with names from the CL package.
4542 * MAP-INTO for a vector destination is open coded. (reported by
4543 Brian Downing on c.l.l)
4544 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4545 documentation string.
4546 * fixed some bugs revealed by Paul Dietz' test suite:
4547 ** COPY-ALIST now signals an error if its argument is a dotted
4549 ** Condition slots are now accessed more correctly in the presence
4550 of multiple initargs for a given slot.
4551 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4552 exclude restarts of the same name associated with a different
4554 ** DEFCLASS of forward-referenced classes with another
4555 forward-referenced class in the superclasses list no longer
4557 ** Condition slots are now initialized once each, not multiple
4558 times. (thanks to Gerd Moellmann)
4559 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4561 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4562 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4563 arguments contain duplicated elements.
4564 ** RESTART-CASE understands local macros.
4565 ** RESTART-CASE associates exactly its own restarts with a condition.
4566 ** ENDP in safe mode checks its argument to be of type LIST.
4567 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4568 in question is unbound.
4569 ** Optimized MAKE-INSTANCE functions no longer cause internal
4570 assertion failures in the presence of duplicate initargs.
4571 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4572 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4573 propagated even in the ctor optimized implementation of
4575 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4577 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4578 * a better implementation of SXHASH on (simple) bit vectors,
4579 measured both in execution speed and in distribution of results
4580 over the positive fixnums, has been installed. Likewise, a better
4581 implementation of EQUAL for simple bit vectors is now available.
4582 * fixed CEILING optimization for a divisor of form 2^k.
4583 * fixed bug 240 (emitting extra style warnings "using the lexical
4584 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4585 by Antonio Martinez)
4586 * fixed SXHASH, giving different results for NIL depending on type
4587 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4588 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4589 variable. (found by Rolf Wester)
4590 * SBCL does not ignore type declarations for special
4591 variables. (reported by rif on c.l.l 2003-03-05)
4592 * some bug fixes in contrib/sb-aclrepl/
4593 * fixed some bugs revealed by Paul Dietz' test suite:
4594 ** a bug in the CONS type specifier, whereby the CAR and CDR
4595 types got intertwined, has been fixed;
4596 ** the type system is now able to reason about the interaction
4597 between INTEGER and RATIO types more completely;
4598 ** APPEND, [N]REVERSE and NRECONC check that those their
4599 arguments, which must be proper lists, are really so;
4600 ** An array specialized to be unable to hold elements has been
4601 implemented, as required -- yes, really -- by ANSI;
4602 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4603 on malformed property lists;
4605 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4606 * incompatible packaging change: in line with Unix convention,
4607 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4608 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4609 * REQUIRE and PROVIDE are now optionally capable of doing something
4610 useful. See the documentation string for REQUIRE.
4611 * infrastructure for a managed SBCL contrib system: contributed
4612 modules in this release include:
4613 ** the ASDF system definition facility;
4614 ** an interface to the BSD Sockets API;
4615 ** an ACL-like convenience interface to the repl;
4616 (thanks to Kevin Rosenberg)
4617 ** an implementation of ROTATE-BYTE, with efficient implementation
4619 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4620 gives a closer approximation to the right answer than previously.
4621 (thanks to Raymond Toy)
4622 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4623 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4624 optional environment arguments, as required by ANSI.
4625 * fixed bugs in other functions taking environment objects, allowing
4626 calls with an explicit NIL environment argument to be compiled
4628 * fixed bug 228: primary return values from
4629 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4630 COMPILE or FUNCTION.
4631 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4632 :TYPE will no longer signal errors on innocuous objects.
4633 * fixed bug 231b: SETQ is better at respecting type declarations in
4634 the lexical environment.
4635 * fixed a bug in DEFCLASS: classes named by symbols with no or
4636 unprintable packages can now be defined.
4637 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4638 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4639 * fixed compiler failure related to checking types of functions.
4640 (reported by Robert E. Brown)
4641 * the compiler is now much more consistent in its error-checking
4642 treatment of bounding index arguments to sequence functions: in
4643 (SAFETY 3) code, errors will be signalled in almost all cases if
4644 invalid sequence bounding indices are passed to functions defined
4645 by ANSI to operate on sequences.
4646 * fixed a bug in the build procedure: documentation of SBCL-specific
4647 packages is now preserved and available in the final Lisp image.
4648 * lifted FDEFINITION lookup out of loops in the implementation of
4649 many list operations. (thanks to Robert E. Brown)
4650 * fixed a bug in the reader: the #n# reader macro now works for
4651 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4652 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4653 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4654 E. Brown and Tony Martinez respectively)
4655 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4656 SLOT-BOUNDP: in particular, it is now able to optimize them much
4657 better, and is now not vulnerable to having packages renamed.
4658 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4659 always called when a slot is not present in an instance. (thanks
4661 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4662 longer signal an error on unreading a character following EOF on
4663 the previous constituent stream. (thanks to Tony Martinez)
4664 * fixed some bugs revealed by Paul Dietz' test suite:
4665 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4666 not just nonnegative fixnums;
4667 ** the logical bit-array operators such as BIT-AND now accept an
4668 explicit NIL for their "opt-arg" argument (to indicate a
4669 freshly-consed result bit-array);
4670 ** ELT now signals an error on an invalid sequence index in safe
4672 ** the type system is now cleverer about negations of numeric
4673 types, and consequently understands the BIGNUM and RATIO types
4675 ** the type system is now cleverer about the interaction between
4676 INTEGER and RATIO types: while bugs still remain, many more
4677 cases are accurately computed;
4678 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4679 if it is in the last clause;
4680 ** CONSTANTLY now correctly returns a side-effect-free function in
4682 ** DECLARE is no longer treated as a special-operator; in
4683 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4684 * incremented fasl file version number due to the change in the
4685 DEFSTRUCT-SLOT-DESCRIPTION structure.
4687 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4688 * minor incompatible change: code processed by the "interpreter" or
4689 EVAL now has a compilation optimization policy of (DEBUG 2)
4690 (changed from (DEBUG 1)) to improve debuggability of interactive
4691 development, and to allow the use of the debug RETURN command in
4693 * an experimental implementation of the RETURN command for the
4694 debugger has been included. (thanks to Frederik Kuivinen)
4695 * fixed bug 62: constraints were not propagated into a loop.
4696 * fixed bug in embedded calls of SORT (reported and investigated by
4698 * fixed some bugs revealed by Paul Dietz' test suite:
4699 ** printing and reading of arrays with some dimensions having
4700 length 0 (thanks to Gerd Moellmann);
4701 ** BOA constructor with &AUX argument without a default value does
4702 not cause a type error;
4703 ** CONSTANTP now returns true for all self-evaluating objects.
4705 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4706 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4707 accessors that are related by inheritance, as specified in the
4708 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4709 Valtteri Vuorikoski)
4710 * The compiler is now able to inline functions that were defined in
4711 a complex lexical environment (e.g. inside a MACROLET).
4712 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4714 * Support for the upcoming FreeBSD-5.0 release has been included.
4715 (thanks to Dag-Erling Smorgrav)
4716 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4717 effect when it is not in a toplevel context.
4718 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4719 stand a better chance of being correct. (thanks to Gerd
4721 * fixed bug in COERCE, which now signals an error on coercing a
4722 rational to a bounded real type which excludes the expected
4724 * The compiler is now able to derive types more accurately from the
4725 COERCE and COMPILE functions.
4726 * fixed bug 223: functional binding is considered to be constant
4727 only for symbols in the CL package.
4728 * fixed bug 231: SETQ did not check the type of a variable being set
4729 (reported by Robert E. Brown)
4730 * A new optimization for MAKE-INSTANCE has been included, fixing
4731 various bugs (including relating to :ALLOCATION :CLASS slots and
4732 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4734 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4735 ** As required by ANSI, LOOP now disallows anonymous collection
4736 clauses such as COLLECT I in conjunction with aggregate boolean
4737 clauses such as THEREIS (= I 1);
4738 ** LOOP now signals an error when any variable is reused in the
4739 same loop (including the potentially useful construct analogous
4740 to WITH A = 1 WITH A = (1+ A);
4741 ** IT is only a special loop symbol within the first clause of a
4742 conditional loop clause;
4743 ** LOOP with a typed iteration variable over a hashtable now
4744 signals a type error iff it should.
4745 * fixed some other bugs revealed by Paul Dietz' test suite:
4746 ** FILE-STREAM now names the class previously known as FD-STREAM;
4747 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4748 argument) no longer signals an error;
4749 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4750 of the slot symbol, rather than using the current package
4751 ((:CONC-NAME "") continues to intern the slot's name in the
4753 * incremented fasl file version number, because of the incompatible
4754 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4755 of the new implementation of DEFINE-COMPILER-MACRO.
4757 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4758 * Support for building SBCL for MIPS platforms running in
4759 little-endian mode has now been checked in, and basic
4760 functionality on said platforms verified.
4761 * minor incompatible change: PCL now records the pathname of a file
4762 in which methods and the like are defined, rather than its
4764 * minor incompatible change: TRUENAME now considers the truename of
4765 a file naming a directory to be the pathname with :DIRECTORY
4766 component indicating that directory.
4767 * minor incompatible change: a NAMED clause in the extended form of
4768 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4769 reason for the previous behaviour is unclear.
4770 * more systematization and improvement of CLOS and MOP conformance
4771 in PCL (thanks to Gerd Moellman and Pierre Mai):
4772 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4774 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4775 primary methods with no specializers;
4776 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4778 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4779 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4780 FORWARD-REFERENCED-CLASSes; error reporting on
4781 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4783 ** SXHASH on CLOS instances now uses a slot internal to the
4784 instance to return different numbers on distinct instances,
4785 while preserving the same return value through invocations of
4787 ** DEFMETHOD signals errors when methods with longer incongruent
4788 lambda lists are added to generic functions;
4789 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4790 CLASS, as specified in AMOP;
4791 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4792 on the order returned by the primary method for classes of
4793 class STANDARD-CLASS;
4794 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4795 * fixed some bugs shown by Paul Dietz' test suite:
4796 ** DOLIST puts its body in TAGBODY;
4797 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4799 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4800 value producing form;
4801 ** if more variables are given to PROGV than values, extra
4802 variables are bound and made to have no value;
4803 ** NSUBSTITUTE on list arguments gets the right answer with
4805 ** ELT signals an error of type TYPE-ERROR when the index argument
4806 is not a valid sequence index;
4807 ** LOOP signals (at macroexpansion time) an error of type
4808 PROGRAM-ERROR when duplicate variable names are found;
4809 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4810 ** FUNCALL of special-operators now cause an error of type
4812 ** PSETQ now works as required in the presence of side-effecting
4813 symbol-macro places;
4814 ** NCONC accepts any object as its last argument;
4815 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4817 ** loop-for-as-package does not require a package to be explicitely
4819 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4821 * fixed bug 166: compiler preserves "there is a way to go"
4822 invariant when deleting code.
4823 * fixed bug 172: macro lambda lists with required arguments after
4824 &REST arguments now cause an error to be signalled. (thanks to
4826 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4827 bug. (thanks to Matthew Danish)
4828 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4830 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4831 arguments are lexically rebound. (thanks to Gerd Moellmann and
4833 * fixed bug 194: error messages are now more informative when there
4834 is no primary method applicable in a call to a generic
4835 function. (thanks to Gerd Moellmann)
4836 * fixed bug in command line argument checking (thanks to Julian
4838 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4839 (thanks to Matthew Danish)
4840 * incremented fasl file version number, because of the
4841 SXHASH-related changes in the layout of CLOS data structures
4843 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4844 * minor incompatible change: The runtime (the Unix executable named
4845 "sbcl") is now much pickier about the .core files it will load.
4846 Essentially it now requires .core files to descend from the same
4847 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4848 as the runtime does. (The intent is to prevent the crashes which
4849 can occur, and which can even be reported as mysterious failures,
4850 when people patch the sources or change the build parameters
4851 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4852 sbcl and .core files.)
4853 * fixed bug: VALUES-LIST is no longer optimized away.
4854 * fixed bug 142: The FFI conversion of C string values to Lisp
4855 string values no longer conses excessively. (thanks to Nathan
4856 Froyd porting Raymond Toy's fix to CMU CL)
4857 * began to systematize and improve MOP conformance in PCL (thanks to
4858 Nathan Froyd, Gerd Moellman and Pierre Mai):
4859 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4861 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4862 ** FINALIZE-INHERITANCE is now called on class finalization;
4863 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4864 argument precedence order.
4865 * fixed bug 202: The compiler no longer fails on functions whose
4866 derived types contradict their declared type.
4867 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4868 so it can be non-toplevel.
4869 * The fasl file version number has changed (because of the new
4870 implementation of DEFMACRO).
4871 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4872 safe code, that any length requirement by their type-specifier
4873 argument is valid. The exceptions to this are described in bug
4875 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4876 functions now check the types of their inputs as required by ANSI.
4877 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4878 introduced symbol is DECLAREd to be SPECIAL.
4879 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4880 * fixed bug: :COUNT argument to sequence functions may be negative
4881 * fixed bug: body of DO-SYMBOLS may contain declarations
4882 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4883 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4884 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4885 symbol macro only once
4886 * fixed printing of call frame when argument list is unavailable
4887 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4888 * compiler no longer signals WARNING on unknown keyword
4891 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4892 * A beta-quality port to the mips architecture running Linux,
4893 based on the old CMUCL backend, has been made. It has been tested
4894 on a big-endian kernel, and works sufficiently well to be able to
4895 rebuild itself; it has not been tested in little-endian mode.
4896 * fixed an inconsistency between gencgc.c and purify.c which made
4897 dumping/loading .core files unreliable
4898 * fixed bug 120a: The compiler now deals correctly with IFs where
4899 the consequent is the same as the alternative, instead of
4900 misderiving the return type. (thanks to Alexey Dejneka)
4901 * fixed bug 113: Logical pathnames are now dumpable (the logical
4902 host is resolved at load-time, throwing an error if it is not
4904 * fixed bug 174: FORMAT's error message is slightly clearer when a
4905 non-printing character is used in a format directive.
4906 * fixed several bugs in compiler checking of type declarations, i.e.
4907 violations of the Python "declarations are assertions" principle
4908 (thanks to Alexey Dejneka)
4909 * fixed several bugs in PCL's error checking (thanks to Gerd
4911 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4913 * fixed bug in compilation of functions as first class values
4914 (thanks to Antonio Martinez-Shotton)
4915 * The compiler's handling TYPE-ERRORs which it can prove will
4916 inevitably happen at runtime has been cleaned up and corrected
4917 in several ways. (thanks to Alexey Dejneka)
4918 * improved argument type checking for various basic arithmetic
4919 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4920 lavished on them in the past that they can be compiled in many
4921 ways in different special cases
4922 * fixed bug 181: compiler checks validity of user supplied type
4924 * cleaned up code flushing in optimization: Function calls which
4925 should signal errors for safety purposes (e.g. which ANSI says
4926 should signal errors when their arguments are of incorrect type)
4927 are no longer optimized away.
4928 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4929 * incremented fasl file version number, because changes in the
4930 implementation of sequence functions like COERCE caused
4931 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4932 in old inline expansions) to become undefined. (Actually these
4933 changes were later undone, so we might very well be binary
4934 compatible with 0.7.7 after all, but leaving the version number
4935 incremented seemed like the simplest and most conservative
4938 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4939 * An alpha-quality port to the parisc architecture running Linux,
4940 based on the old CMUCL backend, has been made. This, even more so
4941 than the other backends, should be considered still a work in
4942 progress; known problems include that the Linux kernel in 64-bit
4943 mode does not propagate the correct sigcontext structure to
4944 userspace, and consequently SBCL on a parisc64 kernel will not
4946 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4947 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4948 suppressed.) Also now that the compiler is looking at declarations
4949 in the environment, it checks optimization declarations as well,
4950 and suppresses inlining when (> DEBUG SPEED).
4951 * More fixes have been made to treatment of floating point exception
4952 treatment and other Unix signals. In particular, floating point
4953 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4954 * The detection and handling of control stack exhaustion (infinite
4955 or very deeply nested recursion) has changed. Stack exhaustion
4956 detection is now done by write-protecting pages at the OS level
4957 and applies at all optimization settings; when found, a
4958 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4959 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4960 be caught using IGNORE-ERRORS.
4961 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4962 correctly when transforming recursive LABELS functions to LETs.
4963 (thanks to Alexey Dejneka)
4964 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4965 that are names of constants or global variables.
4966 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4967 alien routines with docstrings.
4968 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4969 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4971 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4972 (thanks to Eric Marsden)
4973 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4974 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4975 * Bug fix: The SPARC backend can now compile functions involving
4976 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4977 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4978 to a functions expecting a PATHNAME-DESIGNATOR.
4979 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4980 lambda lists. (thanks to Alexey Dejneka)
4981 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4982 functions so that EXPORTing the name of the class doesn't cause
4983 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4984 to Antonio Martinez for reporting this)
4985 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4986 constant-folded without failing an assertion. (thanks to Einar
4987 Floystad Dorum for reporting this)
4988 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4989 types are now dealt with more correctly by the compiler.
4990 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4991 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4992 behaviour analogous to RENAME-FILE. This puts its behaviour more
4993 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4995 * The fasl file version number has changed again. (because of the
4996 bug fix involving the names of PCL MAKE-INSTANCE functions)
4998 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4999 * bug fix: Floating point exceptions are treated much more
5000 consistently on the x86/Linux and PPC/Linux platforms.
5001 * Array initialization with :INITIAL-ELEMENT is now much faster for
5002 cases when the compiler cannot open code the array creation, but
5003 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5004 array accesses have also seen a speed increase.
5005 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5006 specified. (This was at the root of some bad interactions between
5007 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5009 * bug fix: Internal error arguments for undefined functions are now
5010 computed correctly on the PPC/Linux platform.
5011 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5012 Raymond Toy's patch for CMU CL)
5013 * Support for the Solaris 9 operating environment has been included
5014 (thanks to Daniel Merritt)
5015 * A very ugly but hopefully complete draft of the missing FFI chapter
5016 of the manual has been created by reformatting the corresponding
5017 CMU CL manual chapter into (currently very ugly and incoherent)
5018 DocBook and bringing it up to date for SBCL behavior. Thus, the
5019 manual is now essentially complete, at least by my extreme
5020 once-and-only-once standards, whereby it's acceptable to refer to
5021 the doc strings of SB-EXT functions as the primary documentation.
5022 * The fasl file version number has changed again, due to cleanup of
5023 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5024 is no longer a static symbol.)
5026 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5027 * SBCL now builds with OpenMCL (version 0.12) as the
5028 cross-compilation host; also, more progress has been made toward
5029 bootstrapping under CLISP.
5030 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5032 * bug 158 fixed: The compiler can now deal with integer loop
5033 increments different from 1; fixing this turned out also to fix
5035 * bug 169 fixed: no more bogus warnings about using lexical bindings
5036 despite the presence of perfectly good SPECIAL declarations (thanks
5037 to David Lichteblau)
5038 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5039 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5040 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5042 * bug 180 fixed: Method combination specifications no longer ignore
5043 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5044 * bug fix: Structure type predicate functions now check their argument
5045 count as they should.
5046 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5047 correctly. (thanks to Pierre Mai)
5048 * minor incompatible change: The --noprogrammer option is deprecated
5049 in favor of the new --disable-debugger option, which is very similar.
5050 (The major difference is that it takes effect at a slightly different
5051 time at startup, causing handling of errors in --sysinit and
5052 --userinit files will be affected differently.) The
5053 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5054 been added to allow this functionality to be controlled from ordinary
5055 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5056 maintainers, who might want to run non-interactive scripts to
5057 build SBCL cores which will later be used interactively.)
5058 * minor incompatible change: The LOAD function no longer, when given
5059 a wild pathname to load, loads all files matching that pathname.
5060 Instead, an error of type FILE-ERROR is signalled.
5062 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5063 * bug 147 fixed: The compiler preserves its block link/count
5064 invariants more correctly now so that it doesn't crash. (thanks
5066 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5068 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5069 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5070 no-value-for-this-character as NIL (as specified by ANSI).
5071 * HOST-NAMESTRING on physical pathnames now returns a string that is
5072 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5073 (thanks to Christophe Rhodes)
5074 * The Alpha port handles icache flushing more correctly. (thanks to
5076 * More progress has been made toward bootstrapping under CLISP. (thanks
5077 to Christophe Rhodes)
5078 * The fasl file format has changed again, because dynamic loading
5079 on OpenBSD (which has non-ELF object files) motivated some cleanups
5080 in the way that foreign symbols are transformed and passed around.
5081 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5082 is no longer treated as whitespace by the reader, but instead as
5083 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5084 |A
\7fB|, instead of A as it used to.
5086 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5087 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5088 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5089 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5090 this as of 0.7.1.45, but was left out of the previous news section
5091 (thanks to Dan Barlow)
5092 * SBCL now runs on the Solaris operating system on SPARC architectures
5093 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5094 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5095 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5096 * SPARC backend cleanups, allowing builds of cores optimized for V8
5097 and V9 SPARCS, and also emission of code targeted to a particular
5098 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5100 * SBCL is closer to bootstrapping under CLISP, thanks to various
5101 fixes by Christophe Rhodes.
5102 * The fasl file format has changed again, to allow the compiler's
5103 INFO database to support symbol macros.
5104 * The user manual (in doc/) is formatted into HTML more nicely.
5105 (thanks to coreythomas)
5106 * The system is smarter about SUBTYPEP relationships, especially
5107 those involving NOT types (including types such as ATOM which are
5108 represented internally using NOT types). Thus SUBTYPEP is less
5109 likely to return (VALUES NIL NIL) in general, and in particular
5110 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5112 * The fasl file format has changed again, because the internal
5113 representation of types now includes a new slot to support the new
5114 SUBTYPEP-of-NOT-types logic.
5115 * (not a change in the main branch of SBCL, but a related prototype
5116 which can hopefully be merged into the main branch of SBCL in the
5117 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5118 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5119 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5120 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5121 dispatch macro character combinations. (thanks to Alexey Dejneka)
5122 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5123 that superficially look like logical namestrings correctly.
5124 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5126 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5127 default supplied-p) for &optional and &key arguments. (thanks to
5130 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5131 * incompatible change: The compiler is now less aggressive about
5132 tail call optimization, doing it only when (> SPACE DEBUG) or
5133 (> SPEED DEBUG). (This is an incompatible change because there are
5134 programs which relied on the old CMU-CL-style behavior to optimize
5135 away their unbounded recursion which will now die of stack overflow.)
5136 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5137 for non-GENCGC systems has been increased to 20M (since that
5138 seems much closer to the likely performance optimum for modern
5139 systems than the old 4M value was)
5140 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5141 and *DEBUG-PRINT-LEVEL*
5142 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5143 of CMU CL's support for SPARC, and various endianness and other
5144 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5145 * new syntactic sugar for the Unix command line: --load foo.bar is now
5146 an alternate notation for --eval '(load "foo.bar")'.
5148 ** The system now detects stack overflow and handles it gracefully,
5149 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5150 optimization settings. (This is a good thing in general, and
5151 its introduction in this version should be particularly timely
5152 for anyone whose code fails because of suppression of tail
5154 ** The system now hunts for the C variable "environ" in a more
5155 devious way, to avoid segfaults when the C library version differs
5156 between compile time and run time. (thanks to Christophe Rhodes)
5157 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5158 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5159 ** The compiler no longer issues bogus style warnings for undefined
5160 classes in the same source file as the DEFCLASSes which defined
5161 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5163 ** fixes in CONDITION class precedence list for undefined function
5164 errors (thanks to Alexei Dejneka)
5165 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5166 correctly. (thanks to Dan Barlow)
5167 ** portability fixes aiming at bootstrapping under CLISP (thanks
5168 to Dave McDonald and Christophe Rhodes)
5169 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5170 ** fixes in type translation and and type inference (thanks to
5172 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5173 ** various fixes in the new ports (thanks to Dan Barlow)
5174 * several changes related to debugging:
5175 ** suppression of tail recursion, as noted above
5176 ** stack overflow detection, as noted above
5177 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5178 is now the default. (For some time encapsulation has been more
5179 reliable than the breakpoint-based :ENCAPSULATE NIL
5180 implementation, at least on X86 systems; and I just noticed that
5181 encapsulation also seems closer to the spirit of the ANSI
5184 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5186 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5187 up properly again. (There was a packaging bug in 0.7.0 which
5188 left their definitions in SB-SYS::LOAD-FOREIGN and
5189 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5190 vital for most things which interface to C-level interfaces,
5191 like extensions working with sockets or databases or
5192 Perl-compatible regexes or whatever, and the need to fix
5193 this bug is the main reason that 0.7.1 was released so
5195 ** DEFGENERIC is now choosier about the methods it redefines, so that
5196 reLOADing a previously-LOADed file containing DEFGENERICs does
5197 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5198 cycle now works as it should. (thanks to Alexey Dejneka)
5199 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5200 fixed by Christophe Rhodes. (He actually submitted this patch
5201 months ago, and I delayed until after 0.7.0.)
5202 ** Bug 111 (internal compiler confusion about runtime checks on
5203 FUNCTION types) was fixed by Alexey Dejneka.
5204 * Some internal cleanups (getting rid of variables which aren't
5205 needed now that the byte interpreter is gone) caused the fasl
5206 file format number to change again.
5208 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5209 * major incompatible change: The default fasl file extension, i.e. the
5210 default extension for files produced by COMPILE-FILE, has changed
5211 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5213 ** There are many changes in the implementation of the compiler.
5214 SBCL is now essentially a compiler-only implementation of ANSI
5215 Common Lisp. EVAL still "interprets" a few special cases, but
5216 almost all the interesting cases are handled by creating
5217 a LAMBDA expression, calling COMPILE on it, then calling
5218 FUNCALL on the result.
5219 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5220 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5221 Since the code is newer, there might still be some new bugs
5222 (though not as many as before Martin Atzmueller's fixes:-). But
5223 the new code is substantially simpler and clearer, and hopefully
5224 any remaining bugs will be simpler, less fundamental, and more
5225 fixable then the bugs in the old code.
5226 ** The revised compiler is still a little unsteady on its feet.
5228 *** The debugging information it produces (particularly the names
5229 of FUNCTION objects) is sometimes much less useful than what
5230 the old compiler produced.
5231 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5232 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5233 within a MACROLET) has been temporarily weakened.
5234 ** There are new compiler optimizations for various functions:
5235 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5236 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5237 *** the math functions TRUNCATE, FLOOR, and CEILING
5238 *** the function-of-all-trades COERCE
5239 Mostly these should be transparent, but there's one
5240 potentially-annoying problem (bug 117): when the compiler
5241 inline-expands a function and does type analysis on the result,
5242 it can create control paths which have type mismatches, and
5243 when it can't prove that those control paths aren't taken,
5244 it will issue WARNINGs about the type mismatches. This is
5245 a particular problem in practice for the new sequence functions.
5246 It's not clear how this should be fixed, and for now, a
5247 workaround is given in the entry for 117 in the BUGS file.
5248 ** (Because of the interaction between the two previous items --
5249 occasional inlining problems and new inline expansions -- some
5250 of the new sequence function optimizations won't really kick in
5251 completely until debugging information, and then inlining, are
5252 straightened out in some future version.)
5253 * minor incompatible changes:
5254 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5255 DIRECTORY no longer implicitly promotes NIL slots of its
5256 pathname argument to :WILD. In particular, when you ask for the
5257 contents of a directory (which you used to be able to do without
5258 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5259 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5260 ** changes in behavior that ANSI explicitly defines to be
5261 implementation dependent:
5262 *** The new compiler-only implementation still conforms with ANSI,
5263 but acts a little different than before. Besides the obvious
5264 changes in performance tradeoffs (that the cost per form passed
5265 to EVAL has gone up, and the cost per form executed by EVAL
5266 has gone down), the behavior of the system changes a little
5267 because there are no longer any interpreted function objects.
5268 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5269 e.g. doing COMPILE on the output of interactive DEFUN is
5271 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5273 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5274 has changed from (:CL) to NIL.
5275 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5276 e.g. #\Newline and #\Tab, don't have names specified in the
5277 ANSI Common Lisp standard, is now based on their ASCII symbolic
5278 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5279 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5280 are no longer used for output.
5281 ** changes in internal implementation constants:
5282 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5283 4 million. (If your application spends a lot of time GCing and
5284 you have a lot of RAM, you might want to experiment with
5285 increasing it even more.)
5286 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5287 However, almost all old code should still continue to work without
5288 immediate update, as SB-C-CALL is now a (deprecated) nickname
5290 ** Old operator names in the style DEF-FOO are now deprecated in
5291 favor of new corresponding names DEFINE-FOO, for consistency with
5292 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5293 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5294 internal symbols, but a few supported extensions like
5295 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5296 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5297 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5298 etc. as you get deeper into recursive calls to the debugger
5299 command loop, instead of the old "5]", "5]]", "5]]]"
5300 sequence. (I was motivated to do this when squabbles between
5301 ILISP and SBCL left me very deeply nested in the debugger. In the
5302 short term, this change will probably provoke more ILISP/SBCL
5303 squabbles, but hopefully it will be an improvement in the long run.)
5304 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5305 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5306 function, since declaiming return types involving aliens is
5307 (1) annoyingly messy to do by hand and (2) vital to efficient
5308 compilation of code which calls such functions.
5309 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5310 longer reexported by the SB-EXT package. They're solely useful
5311 for alien code, so it seems more logical that you should get
5312 them from the SB-ALIEN package, not in SB-EXT.
5313 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5314 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5315 features. Instead, the code that they used to control is always
5316 built into the system.
5317 * many other bug fixes
5318 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5319 advantage of the new EVAL-WHEN stuff and to clean them up in
5320 general, and they are now more ANSI-compliant in a number of
5321 ways. Martin Atzmueller is responsible for a lot of this.
5322 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5324 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5325 *** correct ERROR type for various file operations
5326 *** some fixes for Lisp streams
5327 *** DEFMETHOD syntax checking
5328 *** changing old weird representation of debug information as
5329 strings (which, among their other deficiencies, don't transform
5330 correctly when you rename packages, and don't change their
5331 print representation when you change things like *PACKAGE*
5332 and *PRINT-LENGTH*) to symbols and lists of symbols
5333 He also made several improvements and fixed several bugs in DESCRIBE.
5334 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5336 *** misbehavior of WRITE-STRING/WRITE-LINE
5337 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5338 and several other LOOP problems as well
5339 *** DIRECTORY when similar filenames are present
5340 *** DEFGENERIC with :METHOD options
5341 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5342 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5343 *** argument ordering in FIND with :TEST option
5344 *** mishandled package designator argument in APROPOS-LIST
5345 *** various problems in the backquote readmacro
5346 *** a bug in APROPOS
5347 *** probably some others that I'm not describing very well here,
5348 since the CVS log documents them by reference to sbcl-devel
5349 messages, and the SourceForge archives aren't working well.:-(
5350 ** Dan Barlow improved the Alpha port (and is making progress on the
5351 PPC port, for those of you who think different).
5352 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5353 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5354 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5355 continues to work on the SPARC port (for those of you in a position
5356 to look down upon our little PC-compatible boxes from a great height).
5357 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5358 and uses that copy, rather than the current dynamic value, when
5359 it's trying to decide whether to truncate output. Thus e.g.
5360 (let ((*print-lines* 50))
5361 (pprint-logical-block (stream nil)
5363 (let ((*print-lines* 8))
5364 (print (aref possiblybigthings i) stream)))))
5365 should now truncate the logical block only at 50 lines, instead of
5366 often truncating it at 8 lines, as it did before.
5367 * The doc/cmucl/ directory, containing old CMU CL documentation
5368 from the time of the fork, is no longer part of the base system.
5369 SourceForge has shut down its anonymous FTP service, and with it
5370 my original plan for distributing the old CMU CL documentation
5371 there. For now, if you need these files you can download an old
5372 SBCL source release and extract them from it.
5373 * The fasl file version number changed again, for dozens of reasons,
5374 some of which are apparent above.
5376 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5377 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5378 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5379 patch, so that DISASSEMBLE output is much nicer.
5380 * The code in the SB-PROFILE package now seems reasonably stable.
5381 I still haven't decided what the final interface should look like
5382 (I'd like PROFILE to interact cleanly with TRACE, since both
5383 facilities use function encapsulation) but if you have a need
5384 for profiling now, you can probably use it successfully with
5385 the current CMU-CL-style interface.
5386 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5387 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5388 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5389 link now returns the dangling link itself, and for similar
5390 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5391 link itself. (In these cases the old code signalled an error and
5392 looped endlessly, respectively.) Thus, DIRECTORY now works even
5393 in the presence of dangling and cyclic symbolic links.
5394 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5395 is now a supported extension again, since the consensus on
5396 sbcl-devel was that it can be useful for ordinary development
5397 work, not just for debugging SBCL itself.
5398 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5399 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5400 that currently-defined functions might be redefined later with
5401 different return types.
5402 * Hash tables can be printed readably, as inspired by CMU CL code
5403 of Eric Marsden and SBCL code of Martin Atzmueller.
5404 * better error handling in CLOS method combination, thanks to
5405 Martin Atzmueller porting Pierre Mai's CMU CL patches
5406 * more overflow fixes for >16Mbyte I/O buffers
5407 * A bug in READ has been fixed, so that now a single Ctrl-D
5408 character suffices to cause end-of-file on character streams.
5409 In particular, now you only need one Ctrl-D at the command
5410 line (not two) to exit SBCL.
5411 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5413 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5414 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5415 does the right thing.
5416 * The implementation of some type tests, especially for CONDITION
5417 types, is now tidier and maybe faster, due to CMU CL code
5418 originally by Douglas Crosher, ported by Martin Atzmueller.
5419 * Some math functions have been fixed, and there are new
5420 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5421 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5422 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5423 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5424 likely to be built into sbcl-0.7.0.)
5425 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5426 CL, ported to SBCL by Martin Atzmueller)
5427 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5428 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5429 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5430 * There's a new slam.sh hack to shorten the edit/compile/debug
5431 cycle for low-level changes to SBCL itself, and a new
5432 :SB-AFTER-XC-CORE target feature to control the generation of
5433 the after-xc.core file needed by slam.sh.
5434 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5435 COMPILE-FILE is no longer supported, so that now every function
5436 gets an entry point, so that block compilation looks a little
5437 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5438 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5439 returns the number of bytes consed since the system started,
5440 rather than the number consed since the first time the function
5441 was called. (The new definition parallels ANSI functions like
5442 CL:GET-INTERNAL-RUN-TIME.)
5443 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5444 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5445 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5446 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5447 * Fasl file version numbers are now independent of the target CPU,
5448 since historically most system changes which required version
5449 number changes have affected all CPUs equally. Similarly,
5450 the byte fasl file version is now equal to the ordinary
5453 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5454 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5455 is no longer recognized. I apologize for this, because it was
5456 listed in SB-EXT as a supported extension, but I found that
5457 its existing behavior was poorly specified, as well as incorrectly
5458 specified, and it looked like too much of a mess to straighten it
5459 out. I have enough on my hands trying to get ANSI stuff to work..
5460 * many patches ported from CMU CL by Martin Atzmueller, with
5461 half a dozen bug fixes in pretty-printing and the debugger, and
5462 half a dozen others elsewhere
5463 * fixed bug 13: Floating point infinities are now supported again.
5464 They might still be a little bit flaky, but thanks to bug reports
5465 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5466 as flaky as they were.
5467 * The --noprogrammer command line option is now supported. (Its
5468 behavior is slightly different in detail from what the old man
5469 page claimed it would do, but it's still appropriate under the
5470 same circumstances that the man page talks about.)
5471 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5472 are now supported, and enabled by default. Thus, the compiler can
5473 handle many floating point and complex operations much less
5474 inefficiently. (Thus e.g. you can implement a complex FFT
5476 * The compiler now detects type mismatches between DECLAIM FTYPE
5477 and DEFUN better, and implements CHECK-TYPE more correctly, and
5478 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5479 thanks to patches from Martin Atzmueller.
5480 * various fixes to make the cross-compiler more portable to
5481 ANSI-conforming-but-different cross-compilation hosts (notably
5482 Lispworks for Windows, following bug reports from Arthur Lemmens)
5483 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5484 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5485 fixed thanks to Pierre Mai's CMU CL patches.
5486 * fixes to keep the system from overflowing internal counters when
5487 it tries to use i/o buffers larger than 16M bytes
5488 * fixed bug 45a: Various internal functions required to support
5489 complex special functions have been merged from CMU CL sources.
5490 (When I was first setting up SBCL, I misunderstood a compile-time
5491 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5492 * improved support for type intersection and union, fixing bug 12
5493 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5494 more obscure bugs as well
5495 * some steps toward byte-compiling non-performance-critical
5496 parts of the system, courtesy of patches from Martin Atzmueller
5497 * Christophe Rhodes has made some debian packages of sbcl at
5498 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5499 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5500 stable, but are nonetheless usable. When he's ready, I'd be happy
5501 to add them to the SourceForge "File Releases" section. (And if
5502 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5503 * new fasl file format version number (because of changes in
5504 internal representation of (OR ..) types to accommodate the new
5505 support for (AND ..) types, among other things)
5507 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5508 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5510 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5512 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5513 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5514 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5515 * DESCRIBE now works on structure objects again.
5516 * Most function call argument type mismatches are now handled as
5517 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5518 know whether the function will be redefined before the call is
5519 executed. (The compiler could flag local calls with full WARNINGs,
5520 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5521 it doesn't keep track of enough information to know whether calls
5522 are local in this sense.)
5523 * Compiler output is now more verbose, with messages truncated
5524 later than before. (There should be some supported way for users
5525 to override the default verbosity, but I haven't decided how to
5526 provide it yet, so this behavior is still controlled by the internal
5527 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5528 src/compiler/ir1util.lisp.)
5529 * Fasl file format version numbers have increased again, because
5530 support for the Gray streams extension changes the layout of the
5531 system's STREAM objects.
5532 * The Gray subclassable streams extension now works, thanks to a
5533 patch from Martin Atzmueller.
5534 * The full LOAD-FOREIGN extension (not just the primitive
5535 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5536 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5537 but like most other programs, it defaults to copying the Unix
5538 environment from the original process instead of starting the
5539 new process in an empty environment.
5540 * Extensions which manipulate the Unix environment now support
5541 an :ENVIRONMENT keyword option which doesn't smash case or
5542 do other bad things. The CMU-CL-style :ENV option is retained
5543 for porting convenience.
5544 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5545 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5547 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5549 * A patch from Martin Atzmueller seems to have solved the SIGINT
5550 problem, and as far as we know, signal-handling now works cleanly.
5551 (If you find any new bugs, please report them!)
5552 * The system no longer defaults Lisp source file names to types
5553 ".l", ".cl", or ".lsp", but only to ".lisp".
5554 * The compiler no longer uses special default file extensions for
5555 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5556 seems to expect a single default extension for all compiled code,
5557 and there's no compelling reason to try to stretch the standard
5558 to allow two different extensions.) Instead, byte-compiled files
5559 default to the same extension as native-compiled files.
5560 * Fasl file format version numbers have increased again, because
5561 a rearrangement of internal implementation packages made some
5562 dumped symbols in old fasl files unreadable in new cores.
5563 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5564 many fewer weird special cases.
5565 * Bug #17 (differing COMPILE-FILE behavior between logical and
5566 physical pathnames) has been fixed, and some related misbehavior too,
5567 thanks to a patch from Martin Atzmueller.
5568 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5569 by Tim Moore, ported to SBCL by Martin Atzmueller.
5570 * Martin Atzmueller fixed several filesystem-related problems,
5571 including bug #36, in part by porting CMU CL patches, which were
5572 written in part by Paul Werkowski.
5573 * More compiler warnings in src/runtime/ are gone, thanks to
5574 more patches from Martin Atzmueller.
5575 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5578 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5580 * DESCRIBE now works on CONDITION objects.
5581 * The debugger now handles errors which arise when trying to print
5582 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5584 * The build system now uses an additional file, customize-target-features.lisp,
5585 to allow local modifications to the target *FEATURES* list. (The point of
5586 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5587 debugging features enabled, without having to worry about propagating it
5588 into everyone's system when I do a "cvs update".) When no
5589 customize-target-features.lisp file exists, the target *FEATURES* list
5590 should be constructed the same way as before.
5591 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5592 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5593 warn about behavior which is undefined under the ANSI spec. Note: This
5594 is specified by ANSI, but it's not very popular with programmers.
5595 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5596 macro in the SBCL sources for an example of a workaround which you
5597 might use to make portable ANSI-standard code which does what you want.
5598 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5599 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5600 when it's used as a non-toplevel form. (This is required in order
5601 to implement the DEFCONSTANT-EQX macro.)
5602 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5603 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5604 funny things, due to bugs in the implementation of EVAL-WHEN
5605 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5606 non-toplevel DEFCONSTANTs are uncommon.)
5607 * The core file version number and fasl file version number have been
5608 incremented, because the old noncompliant DEFCONSTANT behavior involved
5609 calling functions which no longer exist, and because I also took the
5610 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5611 * fixed bug 1 (error handling before read-eval-print loop starts), and
5612 redid debugger restarts and related debugger commands somewhat while
5614 ** The QUIT debugger command is gone, since it did something
5615 rather different than the SB-EXT:QUIT command, and since it never
5616 worked properly outside the main toplevel read/eval/print loop.
5617 Invoking the new TOPLEVEL restart provides the same functionality.
5618 ** The GO debugger command is also gone, since you can just invoke
5619 the CONTINUE restart directly instead.
5620 ** The TOP debugger command is also gone, since it's redundant with the
5621 FRAME 0 command, and since it interfered with abbreviations for the
5623 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5625 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5626 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5627 some porting work by Martin Atzmueller)
5628 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5629 with a boatload of patches which he ported to SBCL. Now that those
5631 ** The system tries to make sure that its low-priority messages
5632 are prefixed by semicolons, to help people who like to use
5633 syntax highlighting in their ILISP buffer. (This patch
5634 was originally due to Raymond Toy.)
5635 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5636 patches originally written by Raymond Toy.
5637 ** The compiler understands coercion between single-value and
5638 multiple-VALUES type expressions better, getting rid of some very
5639 weird behavior, thanks to patches originally by Robert MacLachlan
5640 and Douglas Crosher.
5641 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5642 lambda lists, thanks to a patch originally by Pierre Mai.
5643 ** The system no longer bogusly warns about "abbreviated type
5645 ** The compiler gets less confused by inlining and RETURN-FROM,
5646 thanks to some patches originally by Tim Moore.
5647 ** The system no longer hangs when dumping circular lists to fasl
5648 files, thanks to a patch originally from Douglas Crosher.
5649 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5650 undefined function error.
5651 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5652 in structure slot initforms) for now, documented workaround instead:-|
5653 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5654 * fixed bug 5: added stubs for various Gray stream functions called
5655 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5656 installed, at least appropriate type errors are generated
5657 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5658 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5659 consistently in DEFMETHOD forms.
5660 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5661 it doesn't seem to affect SBCL after all
5662 * The C runtime system now builds with better optimization and many
5663 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5665 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5667 * The system is now under CVS at SourceForge (instead of the
5668 CVS repository on my home machine).
5669 * The new signal handling code has been tweaked to treat register
5670 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5671 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5672 downstream, e.g. in debug-int.lisp, has implicit dependencies
5673 on the unsignedness of integer representation of machine words,
5674 and that caused the system to bomb out with infinite regress
5675 when trying to recover from type errors involving signed values,
5676 e.g. (BUTLAST '(1 2 3) -1).)
5677 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5678 (This was one of the bugs Peter Van Eynde reported back in July.)
5679 * The system now uses code inspired by Colin Walters' O(N)
5680 implementation of MAP (from the cmucl-imp@cons.org mailing
5681 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5682 inline the MAP operation, and there is more than one
5683 sequence argument to the MAP call (so that it can't just
5684 do ETYPECASE once and for all based on the type of the
5685 single sequence argument). (The old non-inline implementation
5686 of the general M-argument sequence-of-length-N case required
5687 O(M*N*N) time when any of the sequence arguments were LISTs.)
5688 * The QUIT :UNIX-CODE keyword argument has been renamed to
5689 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5690 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5692 * Raymond Wiker's patches to port dynamic loading from Linux to
5693 FreeBSD have been added.
5694 * The BUGS file is now more nearly up to date, thanks in large part
5695 to Martin Atzmueller's review of it.
5696 * The debugger now flushes standard output streams before it begins
5697 its output ("debugger invoked" and so forth).
5698 * The core version number and fasl file version number have both
5699 been incremented, because of incompatible changes in the layout
5701 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5702 used to not be called for a saved Lisp image.)
5703 * Martin Atzmueller's version of a patch to fix a compiler crash,
5704 as posted on sbcl-devel 13 September 2000, has been installed.
5705 * Instead of installing Martin Atzmueller's patch for the
5706 compiler transform for SUBSEQ, I deleted the compiler transform,
5707 and transforms for some similar consing operations.
5708 * A bug in signal handling which kept TRACE from working on OpenBSD
5710 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5711 away by constant folding
5712 * The system now defines its address space constants in one place
5713 (in the Lisp sources), and propagates them automatically elsewhere
5714 (through GENESIS and the sbcl.h file). Therefore, patching the
5715 address map is less unnecessarily tedious and error-prone. The
5716 Lisp names of address space constants have also been systematized.
5717 * CVS tags like dollar-Header-dollar have been removed from
5718 the sources, because they have never saved me trouble and
5719 they've been source of trouble working with patches and other
5720 diff-related operations.
5721 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5722 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5724 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5726 * The system has been ported to OpenBSD.
5727 * The system now compiles with a simple "sh make.sh" on the systems
5728 that it's supported on. I.e., now you no longer need to tweak
5729 text in the target-features.lisp-expr and symlinks in src/runtime/
5730 by hand, the make.sh takes care of it for you.
5731 * The system is no longer so grossly inefficient when compiling code
5732 involving vectors implemented as general (not simple) vectors (VECTOR T),
5733 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5734 which dares to use the various sequence functions on non-simple
5735 vectors, takes less of a performance hit.
5736 * There is now a primitive type predicate VECTOR-T-P
5737 to test for the (VECTOR T) type, so that e.g.
5738 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5739 can now be compiled with some semblance of efficiency. (The old code
5740 turned the type declaration into a full call to %TYPEP at runtime!)
5741 * AREF on (VECTOR T) is still not fast, since it's still compiled
5742 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5743 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5744 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5745 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5746 without making full calls to SUBTYPEP at runtime.
5747 (Some analogous efficiency issues for non-simple vectors specialized to
5748 element types other than T, or for non-simple multidimensional arrays,
5749 have not been addressed. They could almost certainly be handled the
5750 same way if anyone is motivated to do so.)
5751 * The changes in array handling break binary compatibility, so
5752 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5753 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5754 instead of (VALUES T T).
5755 * By following the instructions that Dan Barlow posted to sbcl-devel
5756 on 2 July 2000, I was able to enable primitive dynamic object
5757 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5758 functionality is not implemented (since it calls ld to resolve
5759 library references automatically, requiring RUN-PROGRAM for its
5760 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5761 try to resolve library references) is now supported.
5762 * The system now flushes the standard output streams when it terminates,
5763 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5764 them at several other probably-convenient times, e.g. in each pass of
5765 the toplevel read-eval-print loop, and after evaluating a form given
5766 as an "--eval" command-line option. (These changes were motivated by a
5767 discussion of stream flushing issues on cmucl-imp in August 2000.)
5768 * The source transform for TYPEP of array types no longer assumes
5769 that an array whose element type is a not-yet-defined type
5770 is implemented as an array of T, but instead punts, so that the
5771 type will be interpreted at runtime.
5772 * There is now some support for cross-compiling in make.sh: each of
5773 the phases of make.sh has its own script. (This should be transparent
5774 to people doing ordinary, non-cross-compile builds.)
5775 * Since my laptop doesn't have hundreds of megabytes of memory like
5776 my desktop machine, I became more motivated to do some items on
5777 my to-do list in order to reduce the size of the system a little:
5778 ** Arrange for various needed-only-at-cold-init things to be
5779 uninterned after cold init. To support this, those things have
5780 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5781 symbols with such names are now uninterned after cold init).
5782 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5783 fasl files for cold load.
5784 ** Remove the old compiler structure pooling code (which used to
5785 be conditional on the target feature :SB-ALLOC) completely.
5786 ** Redo the representation of some data in cold init to be more compact.
5787 (I also looked into supporting byte compiled code at bootstrap time,
5788 which would probably reduce the size of the system a lot, but that
5789 looked too complicated, so I punted for now.)
5790 * The maximum signal nesting depth in the src/runtime/ support code has
5791 been reduced from 4096 to 256. (I don't know any reason for the very
5792 large old value. If the new smaller value turns out to break something,
5793 I'll probably just bump it back up.)
5794 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5796 * Many, many bugs reported by Peter Van Eynde have been added to
5797 the BUGS list; some have even been fixed.
5798 * While enabling dynamic object file loading, I tried to make the
5799 code easier to understand, renaming various functions and variables
5800 with less ambiguous names, and changing some function calling
5801 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5802 * While trying to figure out how to do the OpenBSD port, I tried to
5803 clean up some of the code in src/runtime/. In particular, I dropped
5804 support for non-POSIX signal handling, added various comments,
5805 tweaked the code to reduce the number of compilation warnings, and
5806 renamed some files to increase consistency.
5807 * To support the new automatic configuration functionality in make.sh,
5808 the source file target-features.lisp-expr has been replaced with the
5809 source file base-target-features.lisp-expr and the machine-generated
5810 file local-target-features.lisp-expr.
5811 * fixed a stupid quoting error in make.sh so that using CMU CL
5812 "lisp -batch" as cross-compilation host works again
5814 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5816 * DESCRIBE no longer tries to call itself recursively to describe
5817 bound/fbound values, so that it no longer fails on symbols which are
5818 bound to themselves (like keywords, T, and NIL).
5819 * DESCRIBE now works on generic functions.
5820 * The printer now prints less-screwed-up representations of closures
5821 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5822 * A private symbol is used instead of the :EMPTY keyword previously
5823 used to mark empty slots in hash tables. Thus
5824 (DEFVAR *HT* (MAKE-HASH-TABLE))
5825 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5826 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5827 now does what ANSI says that it should. (You can still get
5828 similar noncompliant behavior if bang on the hash table
5829 implementation with all the symbols you get back from
5830 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5831 This breaks binary compatibility, since tests for equality to
5832 :EMPTY are wired into things like the macroexpansion of
5833 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5835 * There's now a minimal placeholder implementation for CL:STEP,
5836 as required by ANSI.
5837 * An obscure bug in the interaction of the normal compiler, the byte
5838 compiler, inlining, and structure predicates has been patched
5839 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5840 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5842 * Missing ordinary arguments in a macro call are now detected even
5843 when the macro lambda list contains &KEY or &REST.
5844 * The debugger no longer complains about encountering the top of the
5845 stack when you type "FRAME 0" to explicitly instruct it to go to
5846 the top of the stack. And it now prints the frame you request even
5847 if it's the current frame (instead of saying "You are here.").
5848 * As specified by ANSI, the system now always prints keywords
5849 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5851 * The default initial SIZE of HASH-TABLEs is now smaller.
5852 * Type information from CLOS class dispatch is now propagated
5853 into DEFMETHOD bodies, so that e.g.
5854 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5856 is now basically equivalent to
5857 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5858 (DECLARE (TYPE SINGLE-FLOAT X))
5860 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5861 operation, without having to do run-time type dispatch.
5862 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5863 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5864 * Since I don't seem to be making big file reorganizations very often
5865 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5866 is overflowing my ability to conveniently back them up), I've finally
5867 checked the system into CVS. (The CVS repository is on my home system,
5868 not at SourceForge -- putting it on SourceForge might come later.)
5869 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5870 high-level GC-NOTIFY-FOO functions send their output. (There's
5871 still very little control of where low-level verbose GC functions
5872 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5873 less than it used to -- the GC-NOTIFY-FOO functions are now under
5874 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5875 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5876 in only one place in the source code, and propagates it automatically
5877 everywhere that it's needed. Thus e.g. when I bump the version from
5878 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5879 * The C source files now include boilerplate legalese and documentation
5880 at the head of each file (just as the Lisp source files already did).
5881 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5882 to his page will be replaced with a link to his new CLiki service.
5884 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5886 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5887 * The build process now looks for GNU make under the default name "gmake",
5888 instead of "make" as it used to. If GNU make is not available as "gmake"
5889 on your system, you can change this default behavior by setting the
5890 GNUMAKE environment variable.
5891 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5892 can build without error under CMU CL.
5894 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5896 * There is now a partial SBCL user manual (with some new text and some
5897 text cribbed from the CMU CL manual).
5898 * The beginnings of a profiler have been added (starting with the
5899 CMU CL profiler and simplifying and cleaning up). Eventually the
5900 main interface should be through the TRACE macro, but for now,
5901 it's still accessed through vaguely CMU-CL-style functions and macros
5902 exported from the package SB-PROFILE.
5903 * Some problems left over from porting CMU CL to the new
5904 cross-compilation bootstrap process have been cleaned up:
5905 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5906 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5907 part when getting rid of the compiler *BACKEND* stuff.)
5908 ** The value of *NULL-TYPE* was screwed up, because it was
5909 being initialized before the type system knew the final
5910 definition of the 'NULL type. This screwed up several key
5911 optimizations in the compiler, causing inefficiency in all sorts
5912 of places. (I found it because I wanted to understand why
5913 GET-INTERNAL-RUN-TIME was consing.)
5914 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5915 PROCLAIM FTYPE information. Unfortunately this broke binary
5916 compatibility again, since now the forms output by DEFGENERIC
5917 to refer to functions which didn't exist in 0.6.3.
5918 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5919 can use the new (as of 0.6.3) transform for SOME into MAP into
5921 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5922 values to (INTEGER 0 1000000), so that the time code will no longer
5923 occasionally get blown up by Linux returning 1000000 microseconds
5924 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5925 its output conform to the ANSI spec. (Alas, this makes its output
5926 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5927 * A full call to MAP NIL with a single sequence argument no longer conses.
5928 * fixes to problems pointed out by Martin Atzmueller:
5929 * The manual page no longer talks about multiprocessing as though
5930 it were currently supported.
5931 * The ILISP support patches have been removed from the distribution,
5932 because as of version 5.10.1, ILISP now supports SBCL without us
5933 having to maintain patches.
5934 * added a modified version of Raymond Toy's recent CMU CL patch for
5935 EQUALP comparison of HASH-TABLE
5937 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5939 * The system still can't cross-compile itself with
5940 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5941 entails), but at least it can compile more of itself that way
5942 than it used to be able to, and various buglets which were uncovered
5943 by trying to cross-compile itself that way have now been fixed.
5944 * This release breaks binary compatibility again. This time
5945 at least I've incremented the FASL file format version to 2, so that the
5946 problem can be detected reliably instead of just causing weird errors.
5947 * various new style warnings:
5948 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5949 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5950 ** using the lexical binding of a variable named in the *FOO* style
5951 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5952 as specified by ANSI.
5953 * *RANDOM-STATE* is no longer automatically initialized from
5954 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5955 default behavior of the system is to repeat its behavior every time
5956 it's run. If you'd like to change this behavior, you can always
5957 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5958 old convention there was no comparably easy way to get the system to
5959 repeat its behavior every time it was run.
5960 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5961 FTYPE declarations has been removed, in favor of their ANSI
5962 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5963 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5964 the types of their sequence arguments can be determined at compile time.
5965 This is done through a new open code expansion for MAP which eliminates
5966 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5967 argument types can be determined at compile time.
5968 * The optimizer now transforms COERCE into an identity operation when it
5969 can prove that the coerced object is already of the correct type. (This
5970 can be a win for machine generated code, including the output of other
5971 optimization transforms, such as the MAP transform above.)
5972 * Credit information has been moved from source file headers into CREDITS.
5973 * Source file headers have been made more standard.
5974 * The CASE macro now compiles without complaining even when it has
5977 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5979 * (Note that the way that the PCL macroexpansions were rewritten
5980 to accommodate the change in DEFGENERIC below breaks binary
5981 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5982 not run under sbcl-0.6.2. Once we get out of alpha releases,
5983 i.e. hit release 1.0.0, we'll probably try to maintain binary
5984 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5985 and sbcl-1.4.4. Until then, however, it might be fairly common
5986 for maintenance releases to break binary compatibility.)
5987 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5989 * The reporting of unhandled signals has been changed to print some
5990 explanatory text as well as the report form. (Previously only
5991 the report form was printed.)
5992 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5993 it defines, so that the compiler no longer issues undefined function
5994 warnings for compiled-but-not-yet-loaded generic functions.
5995 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5996 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5997 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5998 section of the ANSI spec are supported.
5999 * The "" nickname for the "KEYWORD" package has been removed.
6000 The reader still handles symbol tokens which begin with a package marker
6001 as keywords, but it doesn't expose its mechanism for doing so in the
6002 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6003 * The system now issues STYLE-WARNINGs for contradictory TYPE
6004 proclamations. (Warnings for contradictory FTYPE proclamations would
6005 be nice too, but those can't be done usefully unless the type system
6006 is made smarter about FUNCTION types.)
6007 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6008 systematized, so that "*target-*.lisp is supposed to exist only on the
6009 target and imply that there's a related file which exists on the
6010 host, and *host-*.lisp is supposed to exist only on the host and imply
6011 that there's a related file which exists on the target. This involves a
6012 lot of renaming. Hopefully the acute confusion caused by the renaming
6013 will be justified by the reduction in chronic confusion..
6014 ** runtime-type.lisp -> early-target-type.lisp
6015 ** target-type.lisp -> late-target-type.lisp
6016 ** early-host-format.lisp -> early-format.lisp
6017 ** late-host-format.lisp -> late-format.lisp
6018 ** host-error.lisp -> misc-error.lisp
6019 ** early-error.lisp -> early-target-error.lisp
6020 ** late-error.lisp -> late-target-error.lisp
6021 ** host-defboot.lisp -> early-defboot.lisp
6022 ** code/misc.lisp -> code/target-misc.lisp
6023 ** code/host-misc.lisp -> code/misc.lisp
6024 ** code/numbers.lisp -> code/target-numbers.lisp
6025 ** code/early-numbers.lisp -> numbers.lisp
6026 ** early-host-type.lisp -> early-type.lisp
6027 ** late-host-type.lisp -> late-type.lisp
6028 ** host-typep.lisp -> typep.lisp
6029 ** load.lisp -> target-load.lisp
6030 ** host-load.lisp -> load.lisp
6031 ** host-disassem.lisp -> disassem.lisp
6032 ** host-insts.lisp -> insts.lisp
6033 ** byte-comp.lisp -> target-byte-comp.lisp
6034 ** host-byte-comp.lisp -> byte-comp.lisp
6035 ** host-signal.lisp -> signal.lisp
6036 ** host-defstruct.lisp -> defstruct.lisp
6037 ** late-target-type.lisp -> deftypes-for-target.lisp
6038 Furthermore, several other previously target-only files foo.lisp (e.g.
6039 hash-table.lisp and random.lisp) have been split into a target-and-host
6040 foo.lisp file and a target-only target-foo.lisp file, with their key type
6041 definitions in the target-and-host part, so that the cross-compiler will
6042 know more about target types.
6043 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6044 gone away. In their place are various *BACKEND-FOO* variables
6045 corresponding to the slots of the old structure.
6046 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6047 into the target SBCL has been fixed.
6048 * The chill.lisp system for loading cold code into a running SBCL
6050 * Support for the CMU CL "scavenger hook" extension has been removed.
6051 (It was undocumented and unused in the CMU CL sources that SBCL was
6052 derived from, and stale in sbcl-0.6.1.)
6053 * Various errors in the cross-compiler type system were detected
6054 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6055 (enabling various consistency checks). Many of them were fixed,
6056 but some hard problems remain, so the compiler is back to
6057 running without *TYPE-SYSTEM-INITIALIZED* for now.
6058 * As part of the cross-compiler type system cleanup, I implemented
6059 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6060 * I have started adding UNCROSS calls throughout the type system
6061 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6062 on cross-compiler input files will be able to go away, and various
6064 * CONSTANTP now returns true for quoted forms (as explicitly required
6067 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6069 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6070 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6071 (MAKE-LIST -1). In the longer term, it ought to become true
6072 that declarations are assertions even at SAFETY 1. For now, it's not
6073 quite true even at SAFETY 3, but it's at least more nearly true..
6074 (Note that this change seems to increases the size of the system by
6075 O(5%) and to decrease the speed of the compiler by 20% or more.)
6076 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6077 for the problem of printing dozens of lines of distracting information
6078 about low-level system machinery as part of the top stack frame
6079 on entry to the debugger when an undefined function was called.
6080 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6081 is not reset to COMMON-LISP-USER.
6082 * Compilation of stuff related to dyncount.lisp has been made conditional
6083 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6084 smaller. The various dyncount-related symbols have been moved into
6085 a new "SB-DYNCOUNT" package.
6086 * tty-inspect.lisp has been renamed to inspect.lisp.
6087 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6088 feature has gone away. (When we eventually port to other flavors of
6089 libc and/or Unix, we'll try to make the differences between flavors
6090 invisible at the user level.)
6091 * Various other *FEATURES* tags, and/or their associated conditionals,
6092 have been removed if obsolescent, or given better documentation, or
6093 sometimes given more-mnemonic names.
6095 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6097 * tidied up "make.sh" script
6098 * tidied up system directory structure
6099 * better "clean.sh" behavior
6100 * added doc/FOR-CMUCL-DEVELOPERS
6101 * many many small tweaks to output format, e.g. removing possibly-confusing
6102 trailing #\. character in DESCRIBE-INSTANCE
6103 * (EQUALP #\A 'A) no longer signals an error.
6104 * new hashing code, including EQUALP hashing
6105 * tidied up Lisp initialization and toplevel
6106 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6107 * command line argument processing
6108 * added POSIX-GETENV function to deal with Unix-ish environment variables
6109 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6110 terminating SBCL on EOF
6111 * non-verbose GC by default
6112 * There is no more "sbcl" shell script; the sbcl file is now the C
6113 runtime executable (just like CMU CL).
6114 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6116 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6117 symbol and package information as Lisp native symbol and package objects
6118 instead of strings naming symbols and strings naming packages. This way,
6119 whenever packages are renamed (as in warm init), debug information is
6120 transformed along with everything else.
6121 * tweaked the optimization policy declarations which control the building
6122 of SBCL itself. Now, among other things, the system no longer saves
6123 source location debugging information. (This helps two problems at once
6124 by reducing SBCL size and by keeping SBCL from trying to look for its
6125 sources -- which may not exist -- when reporting errors.)
6126 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6127 debugging and testing purposes
6128 * cleaned up printing, making the printer call PRINT-OBJECT for
6129 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6130 methods, giving nearly-ANSI behavior
6131 * converted almost all special variables to use *FOO* naming convention
6132 * deleted PARSE-TIME functionality, since it can be done portably
6133 * moved some files out of cold init into warm init
6134 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6136 * regularized formatting of source files
6137 * added an install.sh script
6138 * fixed ridiculous memory usage of cross-compiler by making
6139 compiler/alloc.lisp not try to do pooling unless it can hook
6140 itself into the GC of the cross-compilation host. Now the system
6141 builds nicely on my old laptop.
6142 * added :SB-ALLOC in target-features.lisp-expr
6143 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6144 was not implemented)
6145 * re-did condition handling and note reporting in the compiler. Notes
6146 are no longer handled by signalling conditions. Style warnings
6147 and warnings are handled more correctly and reported in such a way
6148 that it's easy to find one or the other in your output (so that you
6149 can e.g. figure out which of many problems caused COMPILE-FILE to
6151 * changed the severity of several compiler warnings from full WARNING
6152 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6153 compiler note reporting so that it doesn't use the condition system
6154 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6155 COMPILE-FILE command)
6156 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6157 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6158 no longer supported, since their implementation was deeply intertwingled
6159 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6160 * removed bogus "support" for compiler macros named (SETF FOO), and
6161 removed the compiler macro for SETF INFO (but only after making a fool
6162 of myself on the cmucl-imp mailing list by posting a bogus patch for
6163 DEFINE-COMPILER-MACRO..)
6164 * Compiled files containing forms which have side effects on the Lisp
6165 reader (such as DEFPACKAGE forms) are now handled more correctly.
6166 (Compiler queuing of top level lambdas has been suppressed by setting
6167 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6168 * deleted various currently-unused source files, e.g. gengc.lisp. They
6169 may be added back at some point e.g. when porting to other architectures,
6170 but until they are it's distracting to distribute them and to try to
6172 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6173 there were so many of them they're just distractions, and UNCROSS is
6174 known to be able to handle the current sources
6175 * moved PROFILE functionality into TRACE, so that it will be clear
6176 how the wrapping and unwrapping of functions when you profile them
6177 interacts with the wrapping and unwrapping of functions when you
6178 trace them. (Actually, the functionality isn't there yet, but at least
6179 the interface specification is there. Hopefully, the functionality will
6180 arrive with some future maintenance release.)
6181 * removed host-oops.lisp
6182 * changed signature of QUIT function to allow UNIX-CODE argument
6183 * fixed READ-SEQUENCE bug
6184 * tweaked verbose GC output so that it looks more like the progress
6185 output that ANSI specifies for functions like LOAD
6186 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6187 * added <http://sbcl.sourceforge.com> to the banner information printed by